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op[1] : void 0, done: true };\r\n    }\r\n}\r\n\r\nexport function __createBinding(o, m, k, k2) {\r\n    if (k2 === undefined) k2 = k;\r\n    o[k2] = m[k];\r\n}\r\n\r\nexport function __exportStar(m, exports) {\r\n    for (var p in m) if (p !== \"default\" && !exports.hasOwnProperty(p)) exports[p] = m[p];\r\n}\r\n\r\nexport function __values(o) {\r\n    var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n    if (m) return m.call(o);\r\n    if (o && typeof o.length === \"number\") return {\r\n        next: function () {\r\n            if (o && i >= o.length) o = void 0;\r\n            return { value: o && o[i++], done: !o };\r\n        }\r\n    };\r\n    throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n    var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n    if (!m) return o;\r\n    var i = m.call(o), r, ar = [], e;\r\n    try {\r\n        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n    }\r\n    catch (error) { e = { error: error }; }\r\n    finally {\r\n        try {\r\n            if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n        }\r\n        finally { if (e) throw e.error; }\r\n    }\r\n    return ar;\r\n}\r\n\r\nexport function __spread() {\r\n    for (var ar = [], i = 0; i < arguments.length; i++)\r\n        ar = ar.concat(__read(arguments[i]));\r\n    return ar;\r\n}\r\n\r\nexport function __spreadArrays() {\r\n    for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n    for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n        for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n            r[k] = a[j];\r\n    return r;\r\n};\r\n\r\nexport function __await(v) {\r\n    return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n    if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n    var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n    return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n    function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n    function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n    function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n    function fulfill(value) { resume(\"next\", value); }\r\n    function reject(value) { resume(\"throw\", value); }\r\n    function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n    var i, p;\r\n    return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n    function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: n === \"return\" } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n    if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n    var m = o[Symbol.asyncIterator], i;\r\n    return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n    function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n    function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n    if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n    return cooked;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n    if (mod && mod.__esModule) return mod;\r\n    var result = {};\r\n    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];\r\n    result.default = mod;\r\n    return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n    return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, privateMap) {\r\n    if (!privateMap.has(receiver)) {\r\n        throw new TypeError(\"attempted to get private field on non-instance\");\r\n    }\r\n    return privateMap.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, privateMap, value) {\r\n    if (!privateMap.has(receiver)) {\r\n        throw new TypeError(\"attempted to set private field on non-instance\");\r\n    }\r\n    privateMap.set(receiver, value);\r\n    return value;\r\n}\r\n","export default function _extends() {\n  _extends = Object.assign || function (target) {\n    for (var i = 1; i < arguments.length; i++) {\n      var source = arguments[i];\n\n      for (var key in source) {\n        if (Object.prototype.hasOwnProperty.call(source, key)) {\n          target[key] = source[key];\n        }\n      }\n    }\n\n    return target;\n  };\n\n  return _extends.apply(this, arguments);\n}","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { arrForEach, isString } from \"@microsoft/applicationinsights-core-js\";\r\nexport function stringToBoolOrDefault(str, defaultValue) {\r\n    if (defaultValue === void 0) { defaultValue = false; }\r\n    if (str === undefined || str === null) {\r\n        return defaultValue;\r\n    }\r\n    return str.toString().toLowerCase() === \"true\";\r\n}\r\n/**\r\n * Convert ms to c# time span format\r\n */\r\nexport function msToTimeSpan(totalms) {\r\n    if (isNaN(totalms) || totalms < 0) {\r\n        totalms = 0;\r\n    }\r\n    totalms = Math.round(totalms);\r\n    var ms = \"\" + totalms % 1000;\r\n    var sec = \"\" + Math.floor(totalms / 1000) % 60;\r\n    var min = \"\" + Math.floor(totalms / (1000 * 60)) % 60;\r\n    var hour = \"\" + Math.floor(totalms / (1000 * 60 * 60)) % 24;\r\n    var days = Math.floor(totalms / (1000 * 60 * 60 * 24));\r\n    ms = ms.length === 1 ? \"00\" + ms : ms.length === 2 ? \"0\" + ms : ms;\r\n    sec = sec.length < 2 ? \"0\" + sec : sec;\r\n    min = min.length < 2 ? \"0\" + min : min;\r\n    hour = hour.length < 2 ? \"0\" + hour : hour;\r\n    return (days > 0 ? days + \".\" : \"\") + hour + \":\" + min + \":\" + sec + \".\" + ms;\r\n}\r\nexport function getExtensionByName(extensions, identifier) {\r\n    var extension = null;\r\n    arrForEach(extensions, function (value) {\r\n        if (value.identifier === identifier) {\r\n            extension = value;\r\n            return -1;\r\n        }\r\n    });\r\n    return extension;\r\n}\r\nexport function isCrossOriginError(message, url, lineNumber, columnNumber, error) {\r\n    return !error && isString(message) && (message === \"Script error.\" || message === \"Script error\");\r\n}\r\n//# sourceMappingURL=HelperFuncs.js.map","'use strict';\n\nif (process.env.NODE_ENV === 'production') {\n  module.exports = require('./cjs/react-jsx-runtime.production.min.js');\n} else {\n  module.exports = require('./cjs/react-jsx-runtime.development.js');\n}\n","import objectWithoutPropertiesLoose from \"./objectWithoutPropertiesLoose.js\";\nexport default function _objectWithoutProperties(source, excluded) {\n  if (source == null) return {};\n  var target = objectWithoutPropertiesLoose(source, excluded);\n  var key, i;\n\n  if (Object.getOwnPropertySymbols) {\n    var sourceSymbolKeys = Object.getOwnPropertySymbols(source);\n\n    for (i = 0; i < sourceSymbolKeys.length; i++) {\n      key = sourceSymbolKeys[i];\n      if (excluded.indexOf(key) >= 0) continue;\n      if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue;\n      target[key] = source[key];\n    }\n  }\n\n  return target;\n}","function toVal(mix) {\n\tvar k, y, str='';\n\n\tif (typeof mix === 'string' || typeof mix === 'number') {\n\t\tstr += mix;\n\t} else if (typeof mix === 'object') {\n\t\tif (Array.isArray(mix)) {\n\t\t\tfor (k=0; k < mix.length; k++) {\n\t\t\t\tif (mix[k]) {\n\t\t\t\t\tif (y = toVal(mix[k])) {\n\t\t\t\t\t\tstr && (str += ' ');\n\t\t\t\t\t\tstr += y;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tfor (k in mix) {\n\t\t\t\tif (mix[k]) {\n\t\t\t\t\tstr && (str += ' ');\n\t\t\t\t\tstr += k;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn str;\n}\n\nexport default function () {\n\tvar i=0, tmp, x, str='';\n\twhile (i < arguments.length) {\n\t\tif (tmp = arguments[i++]) {\n\t\t\tif (x = toVal(tmp)) {\n\t\t\t\tstr && (str += ' ');\n\t\t\t\tstr += x\n\t\t\t}\n\t\t}\n\t}\n\treturn str;\n}\n","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n\r\nexport const strShimFunction = \"function\";\r\nexport const strShimObject = \"object\";\r\nexport const strShimUndefined = \"undefined\";\r\nexport const strShimPrototype = \"prototype\";\r\nexport const strShimHasOwnProperty = \"hasOwnProperty\";\r\nexport const strDefault = \"default\";\r\n\r\nexport const ObjClass = Object;\r\nexport const ObjProto = ObjClass[strShimPrototype];\r\nexport const ObjAssign = ObjClass[\"assign\"];\r\nexport const ObjCreate = ObjClass[\"create\"];\r\nexport const ObjDefineProperty = ObjClass[\"defineProperty\"];\r\nexport const ObjHasOwnProperty = ObjProto[strShimHasOwnProperty];\r\n","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport React from 'react';\nimport PropTypes from 'prop-types';\nimport hoistNonReactStatics from 'hoist-non-react-statics';\nimport { chainPropTypes, getDisplayName } from '@material-ui/utils';\nimport makeStyles from '../makeStyles';\nimport getThemeProps from '../getThemeProps';\nimport useTheme from '../useTheme'; // Link a style sheet with a component.\n// It does not modify the component passed to it;\n// instead, it returns a new component, with a `classes` property.\n\nvar withStyles = function withStyles(stylesOrCreator) {\n  var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n  return function (Component) {\n    var defaultTheme = options.defaultTheme,\n        _options$withTheme = options.withTheme,\n        withTheme = _options$withTheme === void 0 ? false : _options$withTheme,\n        name = options.name,\n        stylesOptions = _objectWithoutProperties(options, [\"defaultTheme\", \"withTheme\", \"name\"]);\n\n    if (process.env.NODE_ENV !== 'production') {\n      if (Component === undefined) {\n        throw new Error(['You are calling withStyles(styles)(Component) with an undefined component.', 'You may have forgotten to import it.'].join('\\n'));\n      }\n    }\n\n    var classNamePrefix = name;\n\n    if (process.env.NODE_ENV !== 'production') {\n      if (!name) {\n        // Provide a better DX outside production.\n        var displayName = getDisplayName(Component);\n\n        if (displayName !== undefined) {\n          classNamePrefix = displayName;\n        }\n      }\n    }\n\n    var useStyles = makeStyles(stylesOrCreator, _extends({\n      defaultTheme: defaultTheme,\n      Component: Component,\n      name: name || Component.displayName,\n      classNamePrefix: classNamePrefix\n    }, stylesOptions));\n    var WithStyles = /*#__PURE__*/React.forwardRef(function WithStyles(props, ref) {\n      var classesProp = props.classes,\n          innerRef = props.innerRef,\n          other = _objectWithoutProperties(props, [\"classes\", \"innerRef\"]); // The wrapper receives only user supplied props, which could be a subset of\n      // the actual props Component might receive due to merging with defaultProps.\n      // So copying it here would give us the same result in the wrapper as well.\n\n\n      var classes = useStyles(_extends({}, Component.defaultProps, props));\n      var theme;\n      var more = other;\n\n      if (typeof name === 'string' || withTheme) {\n        // name and withTheme are invariant in the outer scope\n        // eslint-disable-next-line react-hooks/rules-of-hooks\n        theme = useTheme() || defaultTheme;\n\n        if (name) {\n          more = getThemeProps({\n            theme: theme,\n            name: name,\n            props: other\n          });\n        } // Provide the theme to the wrapped component.\n        // So we don't have to use the `withTheme()` Higher-order Component.\n\n\n        if (withTheme && !more.theme) {\n          more.theme = theme;\n        }\n      }\n\n      return /*#__PURE__*/React.createElement(Component, _extends({\n        ref: innerRef || ref,\n        classes: classes\n      }, more));\n    });\n    process.env.NODE_ENV !== \"production\" ? WithStyles.propTypes = {\n      /**\n       * Override or extend the styles applied to the component.\n       */\n      classes: PropTypes.object,\n\n      /**\n       * Use that prop to pass a ref to the decorated component.\n       * @deprecated\n       */\n      innerRef: chainPropTypes(PropTypes.oneOfType([PropTypes.func, PropTypes.object]), function (props) {\n        if (props.innerRef == null) {\n          return null;\n        }\n\n        return null; // return new Error(\n        //   'Material-UI: The `innerRef` prop is deprecated and will be removed in v5. ' +\n        //     'Refs are now automatically forwarded to the inner component.',\n        // );\n      })\n    } : void 0;\n\n    if (process.env.NODE_ENV !== 'production') {\n      WithStyles.displayName = \"WithStyles(\".concat(getDisplayName(Component), \")\");\n    }\n\n    hoistNonReactStatics(WithStyles, Component);\n\n    if (process.env.NODE_ENV !== 'production') {\n      // Exposed for test purposes.\n      WithStyles.Naked = Component;\n      WithStyles.options = options;\n      WithStyles.useStyles = useStyles;\n    }\n\n    return WithStyles;\n  };\n};\n\nexport default withStyles;","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport { withStyles as withStylesWithoutDefault } from '@material-ui/styles';\nimport defaultTheme from './defaultTheme';\n\nfunction withStyles(stylesOrCreator, options) {\n  return withStylesWithoutDefault(stylesOrCreator, _extends({\n    defaultTheme: defaultTheme\n  }, options));\n}\n\nexport default withStyles;","module.exports = require(\"regenerator-runtime\");\n","import defineProperty from \"@babel/runtime/helpers/esm/defineProperty\";\n\nfunction ownKeys(object, enumerableOnly) {\n  var keys = Object.keys(object);\n\n  if (Object.getOwnPropertySymbols) {\n    var symbols = Object.getOwnPropertySymbols(object);\n    if (enumerableOnly) symbols = symbols.filter(function (sym) {\n      return Object.getOwnPropertyDescriptor(object, sym).enumerable;\n    });\n    keys.push.apply(keys, symbols);\n  }\n\n  return keys;\n}\n\nexport default function _objectSpread2(target) {\n  for (var i = 1; i < arguments.length; i++) {\n    var source = arguments[i] != null ? arguments[i] : {};\n\n    if (i % 2) {\n      ownKeys(Object(source), true).forEach(function (key) {\n        defineProperty(target, key, source[key]);\n      });\n    } else if (Object.getOwnPropertyDescriptors) {\n      Object.defineProperties(target, Object.getOwnPropertyDescriptors(source));\n    } else {\n      ownKeys(Object(source)).forEach(function (key) {\n        Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key));\n      });\n    }\n  }\n\n  return target;\n}","/*! *****************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise */\r\n\r\nvar extendStatics = function(d, b) {\r\n    extendStatics = Object.setPrototypeOf ||\r\n        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\r\n    return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n    extendStatics(d, b);\r\n    function __() { this.constructor = d; }\r\n    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n}\r\n\r\nexport var __assign = function() {\r\n    __assign = Object.assign || function __assign(t) {\r\n        for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n            s = arguments[i];\r\n            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n        }\r\n        return t;\r\n    }\r\n    return __assign.apply(this, arguments);\r\n}\r\n\r\nexport function __rest(s, e) {\r\n    var t = {};\r\n    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\r\n        t[p] = s[p];\r\n    if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\r\n        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\r\n            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\r\n                t[p[i]] = s[p[i]];\r\n        }\r\n    return t;\r\n}\r\n\r\nexport function __decorate(decorators, target, key, desc) {\r\n    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\r\n    if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\r\n    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n    return c > 3 && r && Object.defineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __param(paramIndex, decorator) {\r\n    return function (target, key) { decorator(target, key, paramIndex); }\r\n}\r\n\r\nexport function __metadata(metadataKey, metadataValue) {\r\n    if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\r\n}\r\n\r\nexport function __awaiter(thisArg, _arguments, P, generator) {\r\n    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\r\n    return new (P || (P = Promise))(function (resolve, reject) {\r\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\r\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n    });\r\n}\r\n\r\nexport function __generator(thisArg, body) {\r\n    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\r\n    return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n    function verb(n) { return function (v) { return step([n, v]); }; }\r\n    function step(op) {\r\n        if (f) throw new TypeError(\"Generator is already executing.\");\r\n        while (_) try {\r\n            if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\r\n            if (y = 0, t) op = [op[0] & 2, t.value];\r\n            switch (op[0]) {\r\n                case 0: case 1: t = op; break;\r\n                case 4: _.label++; return { value: op[1], done: false };\r\n                case 5: _.label++; y = op[1]; op = [0]; continue;\r\n                case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n                default:\r\n                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n                    if (t[2]) _.ops.pop();\r\n                    _.trys.pop(); continue;\r\n            }\r\n            op = body.call(thisArg, _);\r\n        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n    }\r\n}\r\n\r\nexport function __createBinding(o, m, k, k2) {\r\n    if (k2 === undefined) k2 = k;\r\n    o[k2] = m[k];\r\n}\r\n\r\nexport function __exportStar(m, exports) {\r\n    for (var p in m) if (p !== \"default\" && !exports.hasOwnProperty(p)) exports[p] = m[p];\r\n}\r\n\r\nexport function __values(o) {\r\n    var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n    if (m) return m.call(o);\r\n    if (o && typeof o.length === \"number\") return {\r\n        next: function () {\r\n            if (o && i >= o.length) o = void 0;\r\n            return { value: o && o[i++], done: !o };\r\n        }\r\n    };\r\n    throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n    var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n    if (!m) return o;\r\n    var i = m.call(o), r, ar = [], e;\r\n    try {\r\n        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n    }\r\n    catch (error) { e = { error: error }; }\r\n    finally {\r\n        try {\r\n            if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n        }\r\n        finally { if (e) throw e.error; }\r\n    }\r\n    return ar;\r\n}\r\n\r\nexport function __spread() {\r\n    for (var ar = [], i = 0; i < arguments.length; i++)\r\n        ar = ar.concat(__read(arguments[i]));\r\n    return ar;\r\n}\r\n\r\nexport function __spreadArrays() {\r\n    for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n    for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n        for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n            r[k] = a[j];\r\n    return r;\r\n};\r\n\r\nexport function __await(v) {\r\n    return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n    if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n    var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n    return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n    function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n    function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n    function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n    function fulfill(value) { resume(\"next\", value); }\r\n    function reject(value) { resume(\"throw\", value); }\r\n    function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n    var i, p;\r\n    return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n    function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: n === \"return\" } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n    if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n    var m = o[Symbol.asyncIterator], i;\r\n    return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n    function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n    function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n    if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n    return cooked;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n    if (mod && mod.__esModule) return mod;\r\n    var result = {};\r\n    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];\r\n    result.default = mod;\r\n    return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n    return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, privateMap) {\r\n    if (!privateMap.has(receiver)) {\r\n        throw new TypeError(\"attempted to get private field on non-instance\");\r\n    }\r\n    return privateMap.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, privateMap, value) {\r\n    if (!privateMap.has(receiver)) {\r\n        throw new TypeError(\"attempted to set private field on non-instance\");\r\n    }\r\n    privateMap.set(receiver, value);\r\n    return value;\r\n}\r\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * @fileoverview Standardized Firebase Error.\n *\n * Usage:\n *\n *   // Typescript string literals for type-safe codes\n *   type Err =\n *     'unknown' |\n *     'object-not-found'\n *     ;\n *\n *   // Closure enum for type-safe error codes\n *   // at-enum {string}\n *   var Err = {\n *     UNKNOWN: 'unknown',\n *     OBJECT_NOT_FOUND: 'object-not-found',\n *   }\n *\n *   let errors: Map<Err, string> = {\n *     'generic-error': \"Unknown error\",\n *     'file-not-found': \"Could not find file: {$file}\",\n *   };\n *\n *   // Type-safe function - must pass a valid error code as param.\n *   let error = new ErrorFactory<Err>('service', 'Service', errors);\n *\n *   ...\n *   throw error.create(Err.GENERIC);\n *   ...\n *   throw error.create(Err.FILE_NOT_FOUND, {'file': fileName});\n *   ...\n *   // Service: Could not file file: foo.txt (service/file-not-found).\n *\n *   catch (e) {\n *     assert(e.message === \"Could not find file: foo.txt.\");\n *     if (e.code === 'service/file-not-found') {\n *       console.log(\"Could not read file: \" + e['file']);\n *     }\n *   }\n */\n\nexport type ErrorMap<ErrorCode extends string> = {\n  readonly [K in ErrorCode]: string;\n};\n\nconst ERROR_NAME = 'FirebaseError';\n\nexport interface StringLike {\n  toString(): string;\n}\n\nexport interface ErrorData {\n  [key: string]: unknown;\n}\n\n// Based on code from:\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error#Custom_Error_Types\nexport class FirebaseError extends Error {\n  readonly name = ERROR_NAME;\n\n  constructor(\n    readonly code: string,\n    message: string,\n    public customData?: Record<string, unknown>\n  ) {\n    super(message);\n\n    // Fix For ES5\n    // https://github.com/Microsoft/TypeScript-wiki/blob/master/Breaking-Changes.md#extending-built-ins-like-error-array-and-map-may-no-longer-work\n    Object.setPrototypeOf(this, FirebaseError.prototype);\n\n    // Maintains proper stack trace for where our error was thrown.\n    // Only available on V8.\n    if (Error.captureStackTrace) {\n      Error.captureStackTrace(this, ErrorFactory.prototype.create);\n    }\n  }\n}\n\nexport class ErrorFactory<\n  ErrorCode extends string,\n  ErrorParams extends { readonly [K in ErrorCode]?: ErrorData } = {}\n> {\n  constructor(\n    private readonly service: string,\n    private readonly serviceName: string,\n    private readonly errors: ErrorMap<ErrorCode>\n  ) {}\n\n  create<K extends ErrorCode>(\n    code: K,\n    ...data: K extends keyof ErrorParams ? [ErrorParams[K]] : []\n  ): FirebaseError {\n    const customData = (data[0] as ErrorData) || {};\n    const fullCode = `${this.service}/${code}`;\n    const template = this.errors[code];\n\n    const message = template ? replaceTemplate(template, customData) : 'Error';\n    // Service Name: Error message (service/code).\n    const fullMessage = `${this.serviceName}: ${message} (${fullCode}).`;\n\n    const error = new FirebaseError(fullCode, fullMessage, customData);\n\n    return error;\n  }\n}\n\nfunction replaceTemplate(template: string, data: ErrorData): string {\n  return template.replace(PATTERN, (_, key) => {\n    const value = data[key];\n    return value != null ? String(value) : `<${key}?>`;\n  });\n}\n\nconst PATTERN = /\\{\\$([^}]+)}/g;\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nexport const DEFAULT_ENTRY_NAME = '[DEFAULT]';\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nexport type LogLevelString =\n  | 'debug'\n  | 'verbose'\n  | 'info'\n  | 'warn'\n  | 'error'\n  | 'silent';\n\nexport interface LogOptions {\n  level: LogLevelString;\n}\n\nexport type LogCallback = (callbackParams: LogCallbackParams) => void;\n\nexport interface LogCallbackParams {\n  level: LogLevelString;\n  message: string;\n  args: unknown[];\n  type: string;\n}\n\n/**\n * A container for all of the Logger instances\n */\nexport const instances: Logger[] = [];\n\n/**\n * The JS SDK supports 5 log levels and also allows a user the ability to\n * silence the logs altogether.\n *\n * The order is a follows:\n * DEBUG < VERBOSE < INFO < WARN < ERROR\n *\n * All of the log types above the current log level will be captured (i.e. if\n * you set the log level to `INFO`, errors will still be logged, but `DEBUG` and\n * `VERBOSE` logs will not)\n */\nexport enum LogLevel {\n  DEBUG,\n  VERBOSE,\n  INFO,\n  WARN,\n  ERROR,\n  SILENT\n}\n\nconst levelStringToEnum: { [key in LogLevelString]: LogLevel } = {\n  'debug': LogLevel.DEBUG,\n  'verbose': LogLevel.VERBOSE,\n  'info': LogLevel.INFO,\n  'warn': LogLevel.WARN,\n  'error': LogLevel.ERROR,\n  'silent': LogLevel.SILENT\n};\n\n/**\n * The default log level\n */\nconst defaultLogLevel: LogLevel = LogLevel.INFO;\n\n/**\n * We allow users the ability to pass their own log handler. We will pass the\n * type of log, the current log level, and any other arguments passed (i.e. the\n * messages that the user wants to log) to this function.\n */\nexport type LogHandler = (\n  loggerInstance: Logger,\n  logType: LogLevel,\n  ...args: unknown[]\n) => void;\n\n/**\n * By default, `console.debug` is not displayed in the developer console (in\n * chrome). To avoid forcing users to have to opt-in to these logs twice\n * (i.e. once for firebase, and once in the console), we are sending `DEBUG`\n * logs to the `console.log` function.\n */\nconst ConsoleMethod = {\n  [LogLevel.DEBUG]: 'log',\n  [LogLevel.VERBOSE]: 'log',\n  [LogLevel.INFO]: 'info',\n  [LogLevel.WARN]: 'warn',\n  [LogLevel.ERROR]: 'error'\n};\n\n/**\n * The default log handler will forward DEBUG, VERBOSE, INFO, WARN, and ERROR\n * messages on to their corresponding console counterparts (if the log method\n * is supported by the current log level)\n */\nconst defaultLogHandler: LogHandler = (instance, logType, ...args): void => {\n  if (logType < instance.logLevel) {\n    return;\n  }\n  const now = new Date().toISOString();\n  const method = ConsoleMethod[logType as keyof typeof ConsoleMethod];\n  if (method) {\n    console[method as 'log' | 'info' | 'warn' | 'error'](\n      `[${now}]  ${instance.name}:`,\n      ...args\n    );\n  } else {\n    throw new Error(\n      `Attempted to log a message with an invalid logType (value: ${logType})`\n    );\n  }\n};\n\nexport class Logger {\n  /**\n   * Gives you an instance of a Logger to capture messages according to\n   * Firebase's logging scheme.\n   *\n   * @param name The name that the logs will be associated with\n   */\n  constructor(public name: string) {\n    /**\n     * Capture the current instance for later use\n     */\n    instances.push(this);\n  }\n\n  /**\n   * The log level of the given Logger instance.\n   */\n  private _logLevel = defaultLogLevel;\n\n  get logLevel(): LogLevel {\n    return this._logLevel;\n  }\n\n  set logLevel(val: LogLevel) {\n    if (!(val in LogLevel)) {\n      throw new TypeError(`Invalid value \"${val}\" assigned to \\`logLevel\\``);\n    }\n    this._logLevel = val;\n  }\n\n  // Workaround for setter/getter having to be the same type.\n  setLogLevel(val: LogLevel | LogLevelString): void {\n    this._logLevel = typeof val === 'string' ? levelStringToEnum[val] : val;\n  }\n\n  /**\n   * The main (internal) log handler for the Logger instance.\n   * Can be set to a new function in internal package code but not by user.\n   */\n  private _logHandler: LogHandler = defaultLogHandler;\n  get logHandler(): LogHandler {\n    return this._logHandler;\n  }\n  set logHandler(val: LogHandler) {\n    if (typeof val !== 'function') {\n      throw new TypeError('Value assigned to `logHandler` must be a function');\n    }\n    this._logHandler = val;\n  }\n\n  /**\n   * The optional, additional, user-defined log handler for the Logger instance.\n   */\n  private _userLogHandler: LogHandler | null = null;\n  get userLogHandler(): LogHandler | null {\n    return this._userLogHandler;\n  }\n  set userLogHandler(val: LogHandler | null) {\n    this._userLogHandler = val;\n  }\n\n  /**\n   * The functions below are all based on the `console` interface\n   */\n\n  debug(...args: unknown[]): void {\n    this._userLogHandler && this._userLogHandler(this, LogLevel.DEBUG, ...args);\n    this._logHandler(this, LogLevel.DEBUG, ...args);\n  }\n  log(...args: unknown[]): void {\n    this._userLogHandler &&\n      this._userLogHandler(this, LogLevel.VERBOSE, ...args);\n    this._logHandler(this, LogLevel.VERBOSE, ...args);\n  }\n  info(...args: unknown[]): void {\n    this._userLogHandler && this._userLogHandler(this, LogLevel.INFO, ...args);\n    this._logHandler(this, LogLevel.INFO, ...args);\n  }\n  warn(...args: unknown[]): void {\n    this._userLogHandler && this._userLogHandler(this, LogLevel.WARN, ...args);\n    this._logHandler(this, LogLevel.WARN, ...args);\n  }\n  error(...args: unknown[]): void {\n    this._userLogHandler && this._userLogHandler(this, LogLevel.ERROR, ...args);\n    this._logHandler(this, LogLevel.ERROR, ...args);\n  }\n}\n\nexport function setLogLevel(level: LogLevelString | LogLevel): void {\n  instances.forEach(inst => {\n    inst.setLogLevel(level);\n  });\n}\n\nexport function setUserLogHandler(\n  logCallback: LogCallback | null,\n  options?: LogOptions\n): void {\n  for (const instance of instances) {\n    let customLogLevel: LogLevel | null = null;\n    if (options && options.level) {\n      customLogLevel = levelStringToEnum[options.level];\n    }\n    if (logCallback === null) {\n      instance.userLogHandler = null;\n    } else {\n      instance.userLogHandler = (\n        instance: Logger,\n        level: LogLevel,\n        ...args: unknown[]\n      ) => {\n        const message = args\n          .map(arg => {\n            if (arg == null) {\n              return null;\n            } else if (typeof arg === 'string') {\n              return arg;\n            } else if (typeof arg === 'number' || typeof arg === 'boolean') {\n              return arg.toString();\n            } else if (arg instanceof Error) {\n              return arg.message;\n            } else {\n              try {\n                return JSON.stringify(arg);\n              } catch (ignored) {\n                return null;\n              }\n            }\n          })\n          .filter(arg => arg)\n          .join(' ');\n        if (level >= (customLogLevel ?? instance.logLevel)) {\n          logCallback({\n            level: LogLevel[level].toLowerCase() as LogLevelString,\n            message,\n            args,\n            type: instance.name\n          });\n        }\n      };\n    }\n  }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n  FirebaseApp,\n  FirebaseOptions,\n  FirebaseAppConfig\n} from '@firebase/app-types';\nimport {\n  _FirebaseNamespace,\n  FirebaseService\n} from '@firebase/app-types/private';\nimport { deepCopy } from '@firebase/util';\nimport {\n  ComponentContainer,\n  Component,\n  ComponentType,\n  Name\n} from '@firebase/component';\nimport { AppError, ERROR_FACTORY } from './errors';\nimport { DEFAULT_ENTRY_NAME } from './constants';\nimport { logger } from './logger';\n\n/**\n * Global context object for a collection of services using\n * a shared authentication state.\n */\nexport class FirebaseAppImpl implements FirebaseApp {\n  private readonly options_: FirebaseOptions;\n  private readonly name_: string;\n  private isDeleted_ = false;\n  private automaticDataCollectionEnabled_: boolean;\n  private container: ComponentContainer;\n\n  constructor(\n    options: FirebaseOptions,\n    config: FirebaseAppConfig,\n    private readonly firebase_: _FirebaseNamespace\n  ) {\n    this.name_ = config.name!;\n    this.automaticDataCollectionEnabled_ =\n      config.automaticDataCollectionEnabled || false;\n    this.options_ = deepCopy<FirebaseOptions>(options);\n    this.container = new ComponentContainer(config.name!);\n\n    // add itself to container\n    this._addComponent(new Component('app', () => this, ComponentType.PUBLIC));\n    // populate ComponentContainer with existing components\n    for (const component of this.firebase_.INTERNAL.components.values()) {\n      this._addComponent(component);\n    }\n  }\n\n  get automaticDataCollectionEnabled(): boolean {\n    this.checkDestroyed_();\n    return this.automaticDataCollectionEnabled_;\n  }\n\n  set automaticDataCollectionEnabled(val) {\n    this.checkDestroyed_();\n    this.automaticDataCollectionEnabled_ = val;\n  }\n\n  get name(): string {\n    this.checkDestroyed_();\n    return this.name_;\n  }\n\n  get options(): FirebaseOptions {\n    this.checkDestroyed_();\n    return this.options_;\n  }\n\n  delete(): Promise<void> {\n    return new Promise(resolve => {\n      this.checkDestroyed_();\n      resolve();\n    })\n      .then(() => {\n        this.firebase_.INTERNAL.removeApp(this.name_);\n\n        return Promise.all(\n          this.container.getProviders().map(provider => provider.delete())\n        );\n      })\n      .then((): void => {\n        this.isDeleted_ = true;\n      });\n  }\n\n  /**\n   * Return a service instance associated with this app (creating it\n   * on demand), identified by the passed instanceIdentifier.\n   *\n   * NOTE: Currently storage and functions are the only ones that are leveraging this\n   * functionality. They invoke it by calling:\n   *\n   * ```javascript\n   * firebase.app().storage('STORAGE BUCKET ID')\n   * ```\n   *\n   * The service name is passed to this already\n   * @internal\n   */\n  _getService(\n    name: string,\n    instanceIdentifier: string = DEFAULT_ENTRY_NAME\n  ): FirebaseService {\n    this.checkDestroyed_();\n\n    // getImmediate will always succeed because _getService is only called for registered components.\n    return (this.container.getProvider(name as Name).getImmediate({\n      identifier: instanceIdentifier\n    }) as unknown) as FirebaseService;\n  }\n  /**\n   * Remove a service instance from the cache, so we will create a new instance for this service\n   * when people try to get this service again.\n   *\n   * NOTE: currently only firestore is using this functionality to support firestore shutdown.\n   *\n   * @param name The service name\n   * @param instanceIdentifier instance identifier in case multiple instances are allowed\n   * @internal\n   */\n  _removeServiceInstance(\n    name: string,\n    instanceIdentifier: string = DEFAULT_ENTRY_NAME\n  ): void {\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    this.container.getProvider(name as any).clearInstance(instanceIdentifier);\n  }\n\n  /**\n   * @param component the component being added to this app's container\n   */\n  _addComponent(component: Component): void {\n    try {\n      this.container.addComponent(component);\n    } catch (e) {\n      logger.debug(\n        `Component ${component.name} failed to register with FirebaseApp ${this.name}`,\n        e\n      );\n    }\n  }\n\n  _addOrOverwriteComponent(component: Component): void {\n    this.container.addOrOverwriteComponent(component);\n  }\n\n  toJSON(): object {\n    return {\n      name: this.name,\n      automaticDataCollectionEnabled: this.automaticDataCollectionEnabled,\n      options: this.options\n    };\n  }\n\n  /**\n   * This function will throw an Error if the App has already been deleted -\n   * use before performing API actions on the App.\n   */\n  private checkDestroyed_(): void {\n    if (this.isDeleted_) {\n      throw ERROR_FACTORY.create(AppError.APP_DELETED, { appName: this.name_ });\n    }\n  }\n}\n\n// Prevent dead-code elimination of these methods w/o invalid property\n// copying.\n(FirebaseAppImpl.prototype.name && FirebaseAppImpl.prototype.options) ||\n  FirebaseAppImpl.prototype.delete ||\n  console.log('dc');\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseNamespace } from '@firebase/app-types';\nimport { _FirebaseNamespace } from '@firebase/app-types/private';\nimport { createSubscribe, deepExtend, ErrorFactory } from '@firebase/util';\nimport { FirebaseAppImpl } from './firebaseApp';\nimport { createFirebaseNamespaceCore } from './firebaseNamespaceCore';\n\n/**\n * Return a firebase namespace object.\n *\n * In production, this will be called exactly once and the result\n * assigned to the 'firebase' global.  It may be called multiple times\n * in unit tests.\n */\nexport function createFirebaseNamespace(): FirebaseNamespace {\n  const namespace = createFirebaseNamespaceCore(FirebaseAppImpl);\n  (namespace as _FirebaseNamespace).INTERNAL = {\n    ...(namespace as _FirebaseNamespace).INTERNAL,\n    createFirebaseNamespace,\n    extendNamespace,\n    createSubscribe,\n    ErrorFactory,\n    deepExtend\n  };\n\n  /**\n   * Patch the top-level firebase namespace with additional properties.\n   *\n   * firebase.INTERNAL.extendNamespace()\n   */\n  function extendNamespace(props: { [prop: string]: unknown }): void {\n    deepExtend(namespace, props);\n  }\n\n  return namespace;\n}\n\nexport const firebase = createFirebaseNamespace();\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n  FirebaseApp,\n  FirebaseOptions,\n  FirebaseNamespace,\n  FirebaseAppConfig\n} from '@firebase/app-types';\nimport {\n  _FirebaseApp,\n  _FirebaseNamespace,\n  FirebaseService,\n  FirebaseServiceNamespace\n} from '@firebase/app-types/private';\nimport { deepExtend, contains } from '@firebase/util';\nimport { FirebaseAppImpl } from './firebaseApp';\nimport { ERROR_FACTORY, AppError } from './errors';\nimport { FirebaseAppLiteImpl } from './lite/firebaseAppLite';\nimport { DEFAULT_ENTRY_NAME, PLATFORM_LOG_STRING } from './constants';\nimport { version } from '../../firebase/package.json';\nimport { logger } from './logger';\nimport {\n  setUserLogHandler,\n  setLogLevel,\n  LogCallback,\n  LogOptions\n} from '@firebase/logger';\nimport { Component, ComponentType, Name } from '@firebase/component';\n\n/**\n * Because auth can't share code with other components, we attach the utility functions\n * in an internal namespace to share code.\n * This function return a firebase namespace object without\n * any utility functions, so it can be shared between the regular firebaseNamespace and\n * the lite version.\n */\nexport function createFirebaseNamespaceCore(\n  firebaseAppImpl: typeof FirebaseAppImpl | typeof FirebaseAppLiteImpl\n): FirebaseNamespace {\n  const apps: { [name: string]: FirebaseApp } = {};\n  // eslint-disable-next-line @typescript-eslint/no-explicit-any\n  const components = new Map<string, Component<any>>();\n\n  // A namespace is a plain JavaScript Object.\n  const namespace: FirebaseNamespace = {\n    // Hack to prevent Babel from modifying the object returned\n    // as the firebase namespace.\n    // @ts-ignore\n    __esModule: true,\n    initializeApp,\n    // @ts-ignore\n    app,\n    registerVersion,\n    setLogLevel,\n    onLog,\n    // @ts-ignore\n    apps: null,\n    SDK_VERSION: version,\n    INTERNAL: {\n      registerComponent,\n      removeApp,\n      components,\n      useAsService\n    }\n  };\n\n  // Inject a circular default export to allow Babel users who were previously\n  // using:\n  //\n  //   import firebase from 'firebase';\n  //   which becomes: var firebase = require('firebase').default;\n  //\n  // instead of\n  //\n  //   import * as firebase from 'firebase';\n  //   which becomes: var firebase = require('firebase');\n  // eslint-disable-next-line @typescript-eslint/no-explicit-any\n  (namespace as any)['default'] = namespace;\n\n  // firebase.apps is a read-only getter.\n  Object.defineProperty(namespace, 'apps', {\n    get: getApps\n  });\n\n  /**\n   * Called by App.delete() - but before any services associated with the App\n   * are deleted.\n   */\n  function removeApp(name: string): void {\n    delete apps[name];\n  }\n\n  /**\n   * Get the App object for a given name (or DEFAULT).\n   */\n  function app(name?: string): FirebaseApp {\n    name = name || DEFAULT_ENTRY_NAME;\n    if (!contains(apps, name)) {\n      throw ERROR_FACTORY.create(AppError.NO_APP, { appName: name });\n    }\n    return apps[name];\n  }\n\n  // @ts-ignore\n  app['App'] = firebaseAppImpl;\n  /**\n   * Create a new App instance (name must be unique).\n   */\n  function initializeApp(\n    options: FirebaseOptions,\n    config?: FirebaseAppConfig\n  ): FirebaseApp;\n  function initializeApp(options: FirebaseOptions, name?: string): FirebaseApp;\n  function initializeApp(\n    options: FirebaseOptions,\n    rawConfig = {}\n  ): FirebaseApp {\n    if (typeof rawConfig !== 'object' || rawConfig === null) {\n      const name = rawConfig;\n      rawConfig = { name };\n    }\n\n    const config = rawConfig as FirebaseAppConfig;\n\n    if (config.name === undefined) {\n      config.name = DEFAULT_ENTRY_NAME;\n    }\n\n    const { name } = config;\n\n    if (typeof name !== 'string' || !name) {\n      throw ERROR_FACTORY.create(AppError.BAD_APP_NAME, {\n        appName: String(name)\n      });\n    }\n\n    if (contains(apps, name)) {\n      throw ERROR_FACTORY.create(AppError.DUPLICATE_APP, { appName: name });\n    }\n\n    const app = new firebaseAppImpl(\n      options,\n      config,\n      namespace as _FirebaseNamespace\n    );\n\n    apps[name] = app;\n\n    return app;\n  }\n\n  /*\n   * Return an array of all the non-deleted FirebaseApps.\n   */\n  function getApps(): FirebaseApp[] {\n    // Make a copy so caller cannot mutate the apps list.\n    return Object.keys(apps).map(name => apps[name]);\n  }\n\n  function registerComponent(\n    component: Component\n  ): FirebaseServiceNamespace<FirebaseService> | null {\n    const componentName = component.name;\n    if (components.has(componentName)) {\n      logger.debug(\n        `There were multiple attempts to register component ${componentName}.`\n      );\n\n      return component.type === ComponentType.PUBLIC\n        ? // eslint-disable-next-line @typescript-eslint/no-explicit-any\n          (namespace as any)[componentName]\n        : null;\n    }\n\n    components.set(componentName, component);\n\n    // create service namespace for public components\n    if (component.type === ComponentType.PUBLIC) {\n      // The Service namespace is an accessor function ...\n      const serviceNamespace = (\n        appArg: FirebaseApp = app()\n      ): FirebaseService => {\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        if (typeof (appArg as any)[componentName] !== 'function') {\n          // Invalid argument.\n          // This happens in the following case: firebase.storage('gs:/')\n          throw ERROR_FACTORY.create(AppError.INVALID_APP_ARGUMENT, {\n            appName: componentName\n          });\n        }\n\n        // Forward service instance lookup to the FirebaseApp.\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        return (appArg as any)[componentName]();\n      };\n\n      // ... and a container for service-level properties.\n      if (component.serviceProps !== undefined) {\n        deepExtend(serviceNamespace, component.serviceProps);\n      }\n\n      // eslint-disable-next-line @typescript-eslint/no-explicit-any\n      (namespace as any)[componentName] = serviceNamespace;\n\n      // Patch the FirebaseAppImpl prototype\n      // eslint-disable-next-line @typescript-eslint/no-explicit-any\n      (firebaseAppImpl.prototype as any)[componentName] =\n        // TODO: The eslint disable can be removed and the 'ignoreRestArgs'\n        // option added to the no-explicit-any rule when ESlint releases it.\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        function (...args: any) {\n          const serviceFxn = this._getService.bind(this, componentName);\n          return serviceFxn.apply(\n            this,\n            component.multipleInstances ? args : []\n          );\n        };\n    }\n\n    // add the component to existing app instances\n    for (const appName of Object.keys(apps)) {\n      (apps[appName] as _FirebaseApp)._addComponent(component);\n    }\n\n    return component.type === ComponentType.PUBLIC\n      ? // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        (namespace as any)[componentName]\n      : null;\n  }\n\n  function registerVersion(\n    libraryKeyOrName: string,\n    version: string,\n    variant?: string\n  ): void {\n    // TODO: We can use this check to whitelist strings when/if we set up\n    // a good whitelist system.\n    let library = PLATFORM_LOG_STRING[libraryKeyOrName] ?? libraryKeyOrName;\n    if (variant) {\n      library += `-${variant}`;\n    }\n    const libraryMismatch = library.match(/\\s|\\//);\n    const versionMismatch = version.match(/\\s|\\//);\n    if (libraryMismatch || versionMismatch) {\n      const warning = [\n        `Unable to register library \"${library}\" with version \"${version}\":`\n      ];\n      if (libraryMismatch) {\n        warning.push(\n          `library name \"${library}\" contains illegal characters (whitespace or \"/\")`\n        );\n      }\n      if (libraryMismatch && versionMismatch) {\n        warning.push('and');\n      }\n      if (versionMismatch) {\n        warning.push(\n          `version name \"${version}\" contains illegal characters (whitespace or \"/\")`\n        );\n      }\n      logger.warn(warning.join(' '));\n      return;\n    }\n    registerComponent(\n      new Component(\n        `${library}-version` as Name,\n        () => ({ library, version }),\n        ComponentType.VERSION\n      )\n    );\n  }\n\n  function onLog(logCallback: LogCallback | null, options?: LogOptions): void {\n    if (logCallback !== null && typeof logCallback !== 'function') {\n      throw ERROR_FACTORY.create(AppError.INVALID_LOG_ARGUMENT, {\n        appName: name\n      });\n    }\n    setUserLogHandler(logCallback, options);\n  }\n\n  // Map the requested service to a registered service name\n  // (used to map auth to serverAuth service when needed).\n  function useAsService(app: FirebaseApp, name: string): string | null {\n    if (name === 'serverAuth') {\n      return null;\n    }\n\n    const useService = name;\n\n    return useService;\n  }\n\n  return namespace;\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n  ComponentContainer,\n  ComponentType,\n  Provider,\n  Name\n} from '@firebase/component';\n\nexport class PlatformLoggerService {\n  constructor(private readonly container: ComponentContainer) {}\n  // In initial implementation, this will be called by installations on\n  // auth token refresh, and installations will send this string.\n  getPlatformInfoString(): string {\n    const providers = this.container.getProviders();\n    // Loop through providers and get library/version pairs from any that are\n    // version components.\n    return providers\n      .map(provider => {\n        if (isVersionServiceProvider(provider)) {\n          const service = provider.getImmediate();\n          return `${service.library}/${service.version}`;\n        } else {\n          return null;\n        }\n      })\n      .filter(logString => logString)\n      .join(' ');\n  }\n}\n/**\n *\n * @param provider check if this provider provides a VersionService\n *\n * NOTE: Using Provider<'app-version'> is a hack to indicate that the provider\n * provides VersionService. The provider is not necessarily a 'app-version'\n * provider.\n */\nfunction isVersionServiceProvider(\n  provider: Provider<Name>\n): provider is Provider<'app-version'> {\n  const component = provider.getComponent();\n  return component?.type === ComponentType.VERSION;\n}\n","/**\n * @license\n * Copyright 2018 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport firebase from '@firebase/app';\nimport { name, version } from '../package.json';\n\nfirebase.registerVersion(name, version, 'app');\n\nexport default firebase;\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseNamespace } from '@firebase/app-types';\nimport { _FirebaseNamespace } from '@firebase/app-types/private';\nimport { Component, ComponentType } from '@firebase/component';\nimport { PlatformLoggerService } from './platformLoggerService';\nimport { name, version } from '../package.json';\n\nexport function registerCoreComponents(\n  firebase: FirebaseNamespace,\n  variant?: string\n): void {\n  (firebase as _FirebaseNamespace).INTERNAL.registerComponent(\n    new Component(\n      'platform-logger',\n      container => new PlatformLoggerService(container),\n      ComponentType.PRIVATE\n    )\n  );\n  // Register `app` package.\n  firebase.registerVersion(name, version, variant);\n  // Register platform SDK identifier (no version).\n  firebase.registerVersion('fire-js', '');\n}\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\nif (process.env.NODE_ENV !== 'production') {\n  var ReactIs = require('react-is');\n\n  // By explicitly using `prop-types` you are opting into new development behavior.\n  // http://fb.me/prop-types-in-prod\n  var throwOnDirectAccess = true;\n  module.exports = require('./factoryWithTypeCheckers')(ReactIs.isElement, throwOnDirectAccess);\n} else {\n  // By explicitly using `prop-types` you are opting into new production behavior.\n  // http://fb.me/prop-types-in-prod\n  module.exports = require('./factoryWithThrowingShims')();\n}\n","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n/**\r\n * Constant string defined to support minimization\r\n * @ignore\r\n */\r\nvar Constructor = 'constructor';\r\n/**\r\n * Constant string defined to support minimization\r\n * @ignore\r\n */\r\nvar Prototype = 'prototype';\r\n/**\r\n * Constant string defined to support minimization\r\n * @ignore\r\n */\r\nvar strFunction = 'function';\r\n/**\r\n * Used to define the name of the instance function lookup table\r\n * @ignore\r\n */\r\nvar DynInstFuncTable = '_dynInstFuncs';\r\n/**\r\n * Name used to tag the dynamic prototype function\r\n * @ignore\r\n */\r\nvar DynProxyTag = '_isDynProxy';\r\n/**\r\n * Name added to a prototype to define the dynamic prototype \"class\" name used to lookup the function table\r\n * @ignore\r\n */\r\nvar DynClassName = '_dynClass';\r\n/**\r\n * Prefix added to the classname to avoid any name clashes with other instance level properties\r\n * @ignore\r\n */\r\nvar DynClassNamePrefix = '_dynCls$';\r\n/**\r\n * A tag which is used to check if we have already to attempted to set the instance function if one is not present\r\n * @ignore\r\n */\r\nvar DynInstChkTag = '_dynInstChk';\r\n/**\r\n * A tag which is used to check if we are allows to try and set an instance function is one is not present. Using the same\r\n * tag name as the function level but a different const name for readability only.\r\n */\r\nvar DynAllowInstChkTag = DynInstChkTag;\r\n/**\r\n * The global (imported) instances where the global performance options are stored\r\n */\r\nvar DynProtoDefaultOptions = '_dfOpts';\r\n/**\r\n * Value used as the name of a class when it cannot be determined\r\n * @ignore\r\n */\r\nvar UnknownValue = '_unknown_';\r\n/**\r\n * Constant string defined to support minimization\r\n * @ignore\r\n */\r\nvar str__Proto = \"__proto__\";\r\n/**\r\n * Constant string defined to support minimization\r\n * @ignore\r\n */\r\nvar strUseBaseInst = 'useBaseInst';\r\n/**\r\n * Constant string defined to support minimization\r\n * @ignore\r\n */\r\nvar strSetInstFuncs = 'setInstFuncs';\r\nvar Obj = Object;\r\n/**\r\n * Pre-lookup to check if we are running on a modern browser (i.e. not IE8)\r\n * @ignore\r\n */\r\nvar _objGetPrototypeOf = Obj[\"getPrototypeOf\"];\r\n/**\r\n * Internal Global used to generate a unique dynamic class name, every new class will increase this value\r\n * @ignore\r\n */\r\nvar _dynamicNames = 0;\r\n/**\r\n * Helper to check if the object contains a property of the name\r\n * @ignore\r\n */\r\nfunction _hasOwnProperty(obj, prop) {\r\n    return obj && Obj[Prototype].hasOwnProperty.call(obj, prop);\r\n}\r\n/**\r\n * Helper used to check whether the target is an Object prototype or Array prototype\r\n * @ignore\r\n */\r\nfunction _isObjectOrArrayPrototype(target) {\r\n    return target && (target === Obj[Prototype] || target === Array[Prototype]);\r\n}\r\n/**\r\n * Helper used to check whether the target is an Object prototype, Array prototype or Function prototype\r\n * @ignore\r\n */\r\nfunction _isObjectArrayOrFunctionPrototype(target) {\r\n    return _isObjectOrArrayPrototype(target) || target === Function[Prototype];\r\n}\r\n/**\r\n * Helper used to get the prototype of the target object as getPrototypeOf is not available in an ES3 environment.\r\n * @ignore\r\n */\r\nfunction _getObjProto(target) {\r\n    if (target) {\r\n        // This method doesn't existing in older browsers (e.g. IE8)\r\n        if (_objGetPrototypeOf) {\r\n            return _objGetPrototypeOf(target);\r\n        }\r\n        // target[Constructor] May break if the constructor has been changed or removed\r\n        var newProto = target[str__Proto] || target[Prototype] || (target[Constructor] ? target[Constructor][Prototype] : null);\r\n        if (newProto) {\r\n            return newProto;\r\n        }\r\n    }\r\n    return null;\r\n}\r\n/**\r\n * Helper to get the properties of an object, including none enumerable ones as functions on a prototype in ES6\r\n * are not enumerable.\r\n * @param target\r\n */\r\nfunction _forEachProp(target, func) {\r\n    var props = [];\r\n    var getOwnProps = Obj[\"getOwnPropertyNames\"];\r\n    if (getOwnProps) {\r\n        props = getOwnProps(target);\r\n    }\r\n    else {\r\n        for (var name_1 in target) {\r\n            if (typeof name_1 === \"string\" && _hasOwnProperty(target, name_1)) {\r\n                props.push(name_1);\r\n            }\r\n        }\r\n    }\r\n    if (props && props.length > 0) {\r\n        for (var lp = 0; lp < props.length; lp++) {\r\n            func(props[lp]);\r\n        }\r\n    }\r\n}\r\n/**\r\n * Helper function to check whether the provided function name is a potential candidate for dynamic\r\n * callback and prototype generation.\r\n * @param target The target object, may be a prototype or class object\r\n * @param funcName The function name\r\n * @param skipOwn Skips the check for own property\r\n * @ignore\r\n */\r\nfunction _isDynamicCandidate(target, funcName, skipOwn) {\r\n    return (funcName !== Constructor && typeof target[funcName] === strFunction && (skipOwn || _hasOwnProperty(target, funcName)));\r\n}\r\n/**\r\n * Helper to throw a TypeError exception\r\n * @param message the message\r\n * @ignore\r\n */\r\nfunction _throwTypeError(message) {\r\n    throw new TypeError(\"DynamicProto: \" + message);\r\n}\r\n/**\r\n * Returns a collection of the instance functions that are defined directly on the thisTarget object, it does\r\n * not return any inherited functions\r\n * @param thisTarget The object to get the instance functions from\r\n * @ignore\r\n */\r\nfunction _getInstanceFuncs(thisTarget) {\r\n    // Get the base proto\r\n    var instFuncs = {};\r\n    // Save any existing instance functions\r\n    _forEachProp(thisTarget, function (name) {\r\n        // Don't include any dynamic prototype instances - as we only want the real functions\r\n        if (!instFuncs[name] && _isDynamicCandidate(thisTarget, name, false)) {\r\n            // Create an instance callback for passing the base function to the caller\r\n            instFuncs[name] = thisTarget[name];\r\n        }\r\n    });\r\n    return instFuncs;\r\n}\r\n/**\r\n * Returns whether the value is included in the array\r\n * @param values The array of values\r\n * @param value  The value\r\n */\r\nfunction _hasVisited(values, value) {\r\n    for (var lp = values.length - 1; lp >= 0; lp--) {\r\n        if (values[lp] === value) {\r\n            return true;\r\n        }\r\n    }\r\n    return false;\r\n}\r\n/**\r\n * Returns an object that contains callback functions for all \"base/super\" functions, this is used to \"save\"\r\n * enabling calling super.xxx() functions without requiring that the base \"class\" has defined a prototype references\r\n * @param target The current instance\r\n * @ignore\r\n */\r\nfunction _getBaseFuncs(classProto, thisTarget, instFuncs, useBaseInst) {\r\n    function _instFuncProxy(target, funcHost, funcName) {\r\n        var theFunc = funcHost[funcName];\r\n        if (theFunc[DynProxyTag] && useBaseInst) {\r\n            // grab and reuse the hosted looking function (if available) otherwise the original passed function\r\n            var instFuncTable = target[DynInstFuncTable] || {};\r\n            if (instFuncTable[DynAllowInstChkTag] !== false) {\r\n                theFunc = (instFuncTable[funcHost[DynClassName]] || {})[funcName] || theFunc;\r\n            }\r\n        }\r\n        return function () {\r\n            return theFunc.apply(target, arguments);\r\n        };\r\n    }\r\n    // Start creating a new baseFuncs by creating proxies for the instance functions (as they may get replaced)\r\n    var baseFuncs = {};\r\n    _forEachProp(instFuncs, function (name) {\r\n        // Create an instance callback for passing the base function to the caller\r\n        baseFuncs[name] = _instFuncProxy(thisTarget, instFuncs, name);\r\n    });\r\n    // Get the base prototype functions\r\n    var baseProto = _getObjProto(classProto);\r\n    var visited = [];\r\n    // Don't include base object functions for Object, Array or Function\r\n    while (baseProto && !_isObjectArrayOrFunctionPrototype(baseProto) && !_hasVisited(visited, baseProto)) {\r\n        // look for prototype functions\r\n        _forEachProp(baseProto, function (name) {\r\n            // Don't include any dynamic prototype instances - as we only want the real functions\r\n            // For IE 7/8 the prototype lookup doesn't provide the full chain so we need to bypass the \r\n            // hasOwnProperty check we get all of the methods, main difference is that IE7/8 doesn't return\r\n            // the Object prototype methods while bypassing the check\r\n            if (!baseFuncs[name] && _isDynamicCandidate(baseProto, name, !_objGetPrototypeOf)) {\r\n                // Create an instance callback for passing the base function to the caller\r\n                baseFuncs[name] = _instFuncProxy(thisTarget, baseProto, name);\r\n            }\r\n        });\r\n        // We need to find all possible functions that might be overloaded by walking the entire prototype chain\r\n        // This avoids the caller from needing to check whether it's direct base class implements the function or not\r\n        // by walking the entire chain it simplifies the usage and issues from upgrading any of the base classes.\r\n        visited.push(baseProto);\r\n        baseProto = _getObjProto(baseProto);\r\n    }\r\n    return baseFuncs;\r\n}\r\nfunction _getInstFunc(target, funcName, proto, currentDynProtoProxy) {\r\n    var instFunc = null;\r\n    // We need to check whether the class name is defined directly on this prototype otherwise\r\n    // it will walk the proto chain and return any parent proto classname.\r\n    if (target && _hasOwnProperty(proto, DynClassName)) {\r\n        var instFuncTable = target[DynInstFuncTable] || {};\r\n        instFunc = (instFuncTable[proto[DynClassName]] || {})[funcName];\r\n        if (!instFunc) {\r\n            // Avoid stack overflow from recursive calling the same function\r\n            _throwTypeError(\"Missing [\" + funcName + \"] \" + strFunction);\r\n        }\r\n        // We have the instance function, lets check it we can speed up further calls\r\n        // by adding the instance function back directly on the instance (avoiding the dynamic func lookup)\r\n        if (!instFunc[DynInstChkTag] && instFuncTable[DynAllowInstChkTag] !== false) {\r\n            // If the instance already has an instance function we can't replace it\r\n            var canAddInst = !_hasOwnProperty(target, funcName);\r\n            // Get current prototype\r\n            var objProto = _getObjProto(target);\r\n            var visited = [];\r\n            // Lookup the function starting at the top (instance level prototype) and traverse down, if the first matching function\r\n            // if nothing is found or if the first hit is a dynamic proto instance then we can safely add an instance shortcut\r\n            while (canAddInst && objProto && !_isObjectArrayOrFunctionPrototype(objProto) && !_hasVisited(visited, objProto)) {\r\n                var protoFunc = objProto[funcName];\r\n                if (protoFunc) {\r\n                    canAddInst = (protoFunc === currentDynProtoProxy);\r\n                    break;\r\n                }\r\n                // We need to find all possible initial functions to ensure that we don't bypass a valid override function\r\n                visited.push(objProto);\r\n                objProto = _getObjProto(objProto);\r\n            }\r\n            try {\r\n                if (canAddInst) {\r\n                    // This instance doesn't have an instance func and the class hierarchy does have a higher level prototype version\r\n                    // so it's safe to directly assign for any subsequent calls (for better performance)\r\n                    target[funcName] = instFunc;\r\n                }\r\n                // Block further attempts to set the instance function for any\r\n                instFunc[DynInstChkTag] = 1;\r\n            }\r\n            catch (e) {\r\n                // Don't crash if the object is readonly or the runtime doesn't allow changing this\r\n                // And set a flag so we don't try again for any function\r\n                instFuncTable[DynAllowInstChkTag] = false;\r\n            }\r\n        }\r\n    }\r\n    return instFunc;\r\n}\r\nfunction _getProtoFunc(funcName, proto, currentDynProtoProxy) {\r\n    var protoFunc = proto[funcName];\r\n    // Check that the prototype function is not a self reference -- try to avoid stack overflow!\r\n    if (protoFunc === currentDynProtoProxy) {\r\n        // It is so lookup the base prototype\r\n        protoFunc = _getObjProto(proto)[funcName];\r\n    }\r\n    if (typeof protoFunc !== strFunction) {\r\n        _throwTypeError(\"[\" + funcName + \"] is not a \" + strFunction);\r\n    }\r\n    return protoFunc;\r\n}\r\n/**\r\n * Add the required dynamic prototype methods to the the class prototype\r\n * @param proto - The class prototype\r\n * @param className - The instance classname\r\n * @param target - The target instance\r\n * @param baseInstFuncs - The base instance functions\r\n * @param setInstanceFunc - Flag to allow prototype function to reset the instance function if one does not exist\r\n * @ignore\r\n */\r\nfunction _populatePrototype(proto, className, target, baseInstFuncs, setInstanceFunc) {\r\n    function _createDynamicPrototype(proto, funcName) {\r\n        var dynProtoProxy = function () {\r\n            // Use the instance or prototype function\r\n            var instFunc = _getInstFunc(this, funcName, proto, dynProtoProxy) || _getProtoFunc(funcName, proto, dynProtoProxy);\r\n            return instFunc.apply(this, arguments);\r\n        };\r\n        // Tag this function as a proxy to support replacing dynamic proxy elements (primary use case is for unit testing\r\n        // via which can dynamically replace the prototype function reference)\r\n        dynProtoProxy[DynProxyTag] = 1;\r\n        return dynProtoProxy;\r\n    }\r\n    if (!_isObjectOrArrayPrototype(proto)) {\r\n        var instFuncTable = target[DynInstFuncTable] = target[DynInstFuncTable] || {};\r\n        var instFuncs_1 = instFuncTable[className] = (instFuncTable[className] || {}); // fetch and assign if as it may not exist yet\r\n        // Set whether we are allow to lookup instances, if someone has set to false then do not re-enable\r\n        if (instFuncTable[DynAllowInstChkTag] !== false) {\r\n            instFuncTable[DynAllowInstChkTag] = !!setInstanceFunc;\r\n        }\r\n        _forEachProp(target, function (name) {\r\n            // Only add overridden functions\r\n            if (_isDynamicCandidate(target, name, false) && target[name] !== baseInstFuncs[name]) {\r\n                // Save the instance Function to the lookup table and remove it from the instance as it's not a dynamic proto function\r\n                instFuncs_1[name] = target[name];\r\n                delete target[name];\r\n                // Add a dynamic proto if one doesn't exist or if a prototype function exists and it's not a dynamic one\r\n                if (!_hasOwnProperty(proto, name) || (proto[name] && !proto[name][DynProxyTag])) {\r\n                    proto[name] = _createDynamicPrototype(proto, name);\r\n                }\r\n            }\r\n        });\r\n    }\r\n}\r\n/**\r\n * Checks whether the passed prototype object appears to be correct by walking the prototype hierarchy of the instance\r\n * @param classProto The class prototype instance\r\n * @param thisTarget The current instance that will be checked whether the passed prototype instance is in the hierarchy\r\n * @ignore\r\n */\r\nfunction _checkPrototype(classProto, thisTarget) {\r\n    // This method doesn't existing in older browsers (e.g. IE8)\r\n    if (_objGetPrototypeOf) {\r\n        // As this is primarily a coding time check, don't bother checking if running in IE8 or lower\r\n        var visited = [];\r\n        var thisProto = _getObjProto(thisTarget);\r\n        while (thisProto && !_isObjectArrayOrFunctionPrototype(thisProto) && !_hasVisited(visited, thisProto)) {\r\n            if (thisProto === classProto) {\r\n                return true;\r\n            }\r\n            // This avoids the caller from needing to check whether it's direct base class implements the function or not\r\n            // by walking the entire chain it simplifies the usage and issues from upgrading any of the base classes.\r\n            visited.push(thisProto);\r\n            thisProto = _getObjProto(thisProto);\r\n        }\r\n    }\r\n    return false;\r\n}\r\n/**\r\n * Gets the current prototype name using the ES6 name if available otherwise falling back to a use unknown as the name.\r\n * It's not critical for this to return a name, it's used to decorate the generated unique name for easier debugging only.\r\n * @param target\r\n * @param unknownValue\r\n * @ignore\r\n */\r\nfunction _getObjName(target, unknownValue) {\r\n    if (_hasOwnProperty(target, Prototype)) {\r\n        // Look like a prototype\r\n        return target.name || unknownValue || UnknownValue;\r\n    }\r\n    return (((target || {})[Constructor]) || {}).name || unknownValue || UnknownValue;\r\n}\r\n/**\r\n * Helper function when creating dynamic (inline) functions for classes, this helper performs the following tasks :-\r\n * - Saves references to all defined base class functions\r\n * - Calls the delegateFunc with the current target (this) and a base object reference that can be used to call all \"super\" functions.\r\n * - Will populate the class prototype for all overridden functions to support class extension that call the prototype instance.\r\n * Callers should use this helper when declaring all function within the constructor of a class, as mentioned above the delegateFunc is\r\n * passed both the target \"this\" and an object that can be used to call any base (super) functions, using this based object in place of\r\n * super.XXX() (which gets expanded to _super.prototype.XXX()) provides a better minification outcome and also ensures the correct \"this\"\r\n * context is maintained as TypeScript creates incorrect references using super.XXXX() for dynamically defined functions i.e. Functions\r\n * defined in the constructor or some other function (rather than declared as complete typescript functions).\r\n * ### Usage\r\n * ```typescript\r\n * import dynamicProto from \"@microsoft/dynamicproto-js\";\r\n * class ExampleClass extends BaseClass {\r\n *     constructor() {\r\n *         dynamicProto(ExampleClass, this, (_self, base) => {\r\n *             // This will define a function that will be converted to a prototype function\r\n *             _self.newFunc = () => {\r\n *                 // Access any \"this\" instance property\r\n *                 if (_self.someProperty) {\r\n *                     ...\r\n *                 }\r\n *             }\r\n *             // This will define a function that will be converted to a prototype function\r\n *             _self.myFunction = () => {\r\n *                 // Access any \"this\" instance property\r\n *                 if (_self.someProperty) {\r\n *                     // Call the base version of the function that we are overriding\r\n *                     base.myFunction();\r\n *                 }\r\n *                 ...\r\n *             }\r\n *             _self.initialize = () => {\r\n *                 ...\r\n *             }\r\n *             // Warnings: While the following will work as _self is simply a reference to\r\n *             // this, if anyone overrides myFunction() the overridden will be called first\r\n *             // as the normal JavaScript method resolution will occur and the defined\r\n *             // _self.initialize() function is actually gets removed from the instance and\r\n *             // a proxy prototype version is created to reference the created method.\r\n *             _self.initialize();\r\n *         });\r\n *     }\r\n * }\r\n * ```\r\n * @typeparam DPType This is the generic type of the class, used to keep intellisense valid\r\n * @typeparam DPCls The type that contains the prototype of the current class\r\n * @param theClass - This is the current class instance which contains the prototype for the current class\r\n * @param target - The current \"this\" (target) reference, when the class has been extended this.prototype will not be the 'theClass' value.\r\n * @param delegateFunc - The callback function (closure) that will create the dynamic function\r\n * @param options - Additional options to configure how the dynamic prototype operates\r\n */\r\nexport default function dynamicProto(theClass, target, delegateFunc, options) {\r\n    // Make sure that the passed theClass argument looks correct\r\n    if (!_hasOwnProperty(theClass, Prototype)) {\r\n        _throwTypeError(\"theClass is an invalid class definition.\");\r\n    }\r\n    // Quick check to make sure that the passed theClass argument looks correct (this is a common copy/paste error)\r\n    var classProto = theClass[Prototype];\r\n    if (!_checkPrototype(classProto, target)) {\r\n        _throwTypeError(\"[\" + _getObjName(theClass) + \"] is not in class hierarchy of [\" + _getObjName(target) + \"]\");\r\n    }\r\n    var className = null;\r\n    if (_hasOwnProperty(classProto, DynClassName)) {\r\n        // Only grab the class name if it's defined on this prototype (i.e. don't walk the prototype chain)\r\n        className = classProto[DynClassName];\r\n    }\r\n    else {\r\n        // As not all browser support name on the prototype creating a unique dynamic one if we have not already\r\n        // assigned one, so we can use a simple string as the lookup rather than an object for the dynamic instance\r\n        // function table lookup.\r\n        className = DynClassNamePrefix + _getObjName(theClass, \"_\") + \"$\" + _dynamicNames;\r\n        _dynamicNames++;\r\n        classProto[DynClassName] = className;\r\n    }\r\n    var perfOptions = dynamicProto[DynProtoDefaultOptions];\r\n    var useBaseInst = !!perfOptions[strUseBaseInst];\r\n    if (useBaseInst && options && options[strUseBaseInst] !== undefined) {\r\n        useBaseInst = !!options[strUseBaseInst];\r\n    }\r\n    // Get the current instance functions\r\n    var instFuncs = _getInstanceFuncs(target);\r\n    // Get all of the functions for any base instance (before they are potentially overridden)\r\n    var baseFuncs = _getBaseFuncs(classProto, target, instFuncs, useBaseInst);\r\n    // Execute the delegate passing in both the current target \"this\" and \"base\" function references\r\n    // Note casting the same type as we don't actually have the base class here and this will provide some intellisense support\r\n    delegateFunc(target, baseFuncs);\r\n    // Don't allow setting instance functions for older IE instances\r\n    var setInstanceFunc = !!_objGetPrototypeOf && !!perfOptions[strSetInstFuncs];\r\n    if (setInstanceFunc && options) {\r\n        setInstanceFunc = !!options[strSetInstFuncs];\r\n    }\r\n    // Populate the Prototype for any overridden instance functions\r\n    _populatePrototype(classProto, className, target, instFuncs, setInstanceFunc !== false);\r\n}\r\n/**\r\n * Exposes the default global options to allow global configuration, if the global values are disabled these will override\r\n * any passed values. This is primarily exposed to support unit-testing without the need for individual classes to expose\r\n * their internal usage of dynamic proto.\r\n */\r\nvar perfDefaults = {\r\n    setInstFuncs: true,\r\n    useBaseInst: true\r\n};\r\n// And expose for testing\r\ndynamicProto[DynProtoDefaultOptions] = perfDefaults;\r\n//# sourceMappingURL=DynamicProto.js.map","function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {\n  try {\n    var info = gen[key](arg);\n    var value = info.value;\n  } catch (error) {\n    reject(error);\n    return;\n  }\n\n  if (info.done) {\n    resolve(value);\n  } else {\n    Promise.resolve(value).then(_next, _throw);\n  }\n}\n\nexport default function _asyncToGenerator(fn) {\n  return function () {\n    var self = this,\n        args = arguments;\n    return new Promise(function (resolve, reject) {\n      var gen = fn.apply(self, args);\n\n      function _next(value) {\n        asyncGeneratorStep(gen, resolve, reject, _next, _throw, \"next\", value);\n      }\n\n      function _throw(err) {\n        asyncGeneratorStep(gen, resolve, reject, _next, _throw, \"throw\", err);\n      }\n\n      _next(undefined);\n    });\n  };\n}","import { formatMuiErrorMessage as _formatMuiErrorMessage } from \"@material-ui/utils\";\n// It should to be noted that this function isn't equivalent to `text-transform: capitalize`.\n//\n// A strict capitalization should uppercase the first letter of each word a the sentence.\n// We only handle the first word.\nexport default function capitalize(string) {\n  if (typeof string !== 'string') {\n    throw new Error(process.env.NODE_ENV !== \"production\" ? \"Material-UI: capitalize(string) expects a string argument.\" : _formatMuiErrorMessage(7));\n  }\n\n  return string.charAt(0).toUpperCase() + string.slice(1);\n}","import * as React from 'react';\nimport setRef from './setRef';\nexport default function useForkRef(refA, refB) {\n  /**\n   * This will create a new function if the ref props change and are defined.\n   * This means react will call the old forkRef with `null` and the new forkRef\n   * with the ref. Cleanup naturally emerges from this behavior\n   */\n  return React.useMemo(function () {\n    if (refA == null && refB == null) {\n      return null;\n    }\n\n    return function (refValue) {\n      setRef(refA, refValue);\n      setRef(refB, refValue);\n    };\n  }, [refA, refB]);\n}","import arrayWithHoles from \"@babel/runtime/helpers/esm/arrayWithHoles\";\nimport iterableToArrayLimit from \"@babel/runtime/helpers/esm/iterableToArrayLimit\";\nimport unsupportedIterableToArray from \"@babel/runtime/helpers/esm/unsupportedIterableToArray\";\nimport nonIterableRest from \"@babel/runtime/helpers/esm/nonIterableRest\";\nexport default function _slicedToArray(arr, i) {\n  return arrayWithHoles(arr) || iterableToArrayLimit(arr, i) || unsupportedIterableToArray(arr, i) || nonIterableRest();\n}","export default function _arrayWithHoles(arr) {\n  if (Array.isArray(arr)) return arr;\n}","export default function _iterableToArrayLimit(arr, i) {\n  if (typeof Symbol === \"undefined\" || !(Symbol.iterator in Object(arr))) return;\n  var _arr = [];\n  var _n = true;\n  var _d = false;\n  var _e = undefined;\n\n  try {\n    for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {\n      _arr.push(_s.value);\n\n      if (i && _arr.length === i) break;\n    }\n  } catch (err) {\n    _d = true;\n    _e = err;\n  } finally {\n    try {\n      if (!_n && _i[\"return\"] != null) _i[\"return\"]();\n    } finally {\n      if (_d) throw _e;\n    }\n  }\n\n  return _arr;\n}","export default function _nonIterableRest() {\n  throw new TypeError(\"Invalid attempt to destructure non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\");\n}","'use strict';\n\nfunction checkDCE() {\n  /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */\n  if (\n    typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ === 'undefined' ||\n    typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.checkDCE !== 'function'\n  ) {\n    return;\n  }\n  if (process.env.NODE_ENV !== 'production') {\n    // This branch is unreachable because this function is only called\n    // in production, but the condition is true only in development.\n    // Therefore if the branch is still here, dead code elimination wasn't\n    // properly applied.\n    // Don't change the message. React DevTools relies on it. Also make sure\n    // this message doesn't occur elsewhere in this function, or it will cause\n    // a false positive.\n    throw new Error('^_^');\n  }\n  try {\n    // Verify that the code above has been dead code eliminated (DCE'd).\n    __REACT_DEVTOOLS_GLOBAL_HOOK__.checkDCE(checkDCE);\n  } catch (err) {\n    // DevTools shouldn't crash React, no matter what.\n    // We should still report in case we break this code.\n    console.error(err);\n  }\n}\n\nif (process.env.NODE_ENV === 'production') {\n  // DCE check should happen before ReactDOM bundle executes so that\n  // DevTools can report bad minification during injection.\n  checkDCE();\n  module.exports = require('./cjs/react-dom.production.min.js');\n} else {\n  module.exports = require('./cjs/react-dom.development.js');\n}\n","export default function _classCallCheck(instance, Constructor) {\n  if (!(instance instanceof Constructor)) {\n    throw new TypeError(\"Cannot call a class as a function\");\n  }\n}","function _defineProperties(target, props) {\n  for (var i = 0; i < props.length; i++) {\n    var descriptor = props[i];\n    descriptor.enumerable = descriptor.enumerable || false;\n    descriptor.configurable = true;\n    if (\"value\" in descriptor) descriptor.writable = true;\n    Object.defineProperty(target, descriptor.key, descriptor);\n  }\n}\n\nexport default function _createClass(Constructor, protoProps, staticProps) {\n  if (protoProps) _defineProperties(Constructor.prototype, protoProps);\n  if (staticProps) _defineProperties(Constructor, staticProps);\n  return Constructor;\n}","export default function _getPrototypeOf(o) {\n  _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {\n    return o.__proto__ || Object.getPrototypeOf(o);\n  };\n  return _getPrototypeOf(o);\n}","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nconst stringToByteArray = function (str: string): number[] {\n  // TODO(user): Use native implementations if/when available\n  const out: number[] = [];\n  let p = 0;\n  for (let i = 0; i < str.length; i++) {\n    let c = str.charCodeAt(i);\n    if (c < 128) {\n      out[p++] = c;\n    } else if (c < 2048) {\n      out[p++] = (c >> 6) | 192;\n      out[p++] = (c & 63) | 128;\n    } else if (\n      (c & 0xfc00) === 0xd800 &&\n      i + 1 < str.length &&\n      (str.charCodeAt(i + 1) & 0xfc00) === 0xdc00\n    ) {\n      // Surrogate Pair\n      c = 0x10000 + ((c & 0x03ff) << 10) + (str.charCodeAt(++i) & 0x03ff);\n      out[p++] = (c >> 18) | 240;\n      out[p++] = ((c >> 12) & 63) | 128;\n      out[p++] = ((c >> 6) & 63) | 128;\n      out[p++] = (c & 63) | 128;\n    } else {\n      out[p++] = (c >> 12) | 224;\n      out[p++] = ((c >> 6) & 63) | 128;\n      out[p++] = (c & 63) | 128;\n    }\n  }\n  return out;\n};\n\n/**\n * Turns an array of numbers into the string given by the concatenation of the\n * characters to which the numbers correspond.\n * @param bytes Array of numbers representing characters.\n * @return Stringification of the array.\n */\nconst byteArrayToString = function (bytes: number[]): string {\n  // TODO(user): Use native implementations if/when available\n  const out: string[] = [];\n  let pos = 0,\n    c = 0;\n  while (pos < bytes.length) {\n    const c1 = bytes[pos++];\n    if (c1 < 128) {\n      out[c++] = String.fromCharCode(c1);\n    } else if (c1 > 191 && c1 < 224) {\n      const c2 = bytes[pos++];\n      out[c++] = String.fromCharCode(((c1 & 31) << 6) | (c2 & 63));\n    } else if (c1 > 239 && c1 < 365) {\n      // Surrogate Pair\n      const c2 = bytes[pos++];\n      const c3 = bytes[pos++];\n      const c4 = bytes[pos++];\n      const u =\n        (((c1 & 7) << 18) | ((c2 & 63) << 12) | ((c3 & 63) << 6) | (c4 & 63)) -\n        0x10000;\n      out[c++] = String.fromCharCode(0xd800 + (u >> 10));\n      out[c++] = String.fromCharCode(0xdc00 + (u & 1023));\n    } else {\n      const c2 = bytes[pos++];\n      const c3 = bytes[pos++];\n      out[c++] = String.fromCharCode(\n        ((c1 & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63)\n      );\n    }\n  }\n  return out.join('');\n};\n\ninterface Base64 {\n  byteToCharMap_: { [key: number]: string } | null;\n  charToByteMap_: { [key: string]: number } | null;\n  byteToCharMapWebSafe_: { [key: number]: string } | null;\n  charToByteMapWebSafe_: { [key: string]: number } | null;\n  ENCODED_VALS_BASE: string;\n  readonly ENCODED_VALS: string;\n  readonly ENCODED_VALS_WEBSAFE: string;\n  HAS_NATIVE_SUPPORT: boolean;\n  encodeByteArray(input: number[] | Uint8Array, webSafe?: boolean): string;\n  encodeString(input: string, webSafe?: boolean): string;\n  decodeString(input: string, webSafe: boolean): string;\n  decodeStringToByteArray(input: string, webSafe: boolean): number[];\n  init_(): void;\n}\n\n// We define it as an object literal instead of a class because a class compiled down to es5 can't\n// be treeshaked. https://github.com/rollup/rollup/issues/1691\n// Static lookup maps, lazily populated by init_()\nexport const base64: Base64 = {\n  /**\n   * Maps bytes to characters.\n   */\n  byteToCharMap_: null,\n\n  /**\n   * Maps characters to bytes.\n   */\n  charToByteMap_: null,\n\n  /**\n   * Maps bytes to websafe characters.\n   * @private\n   */\n  byteToCharMapWebSafe_: null,\n\n  /**\n   * Maps websafe characters to bytes.\n   * @private\n   */\n  charToByteMapWebSafe_: null,\n\n  /**\n   * Our default alphabet, shared between\n   * ENCODED_VALS and ENCODED_VALS_WEBSAFE\n   */\n  ENCODED_VALS_BASE:\n    'ABCDEFGHIJKLMNOPQRSTUVWXYZ' + 'abcdefghijklmnopqrstuvwxyz' + '0123456789',\n\n  /**\n   * Our default alphabet. Value 64 (=) is special; it means \"nothing.\"\n   */\n  get ENCODED_VALS() {\n    return this.ENCODED_VALS_BASE + '+/=';\n  },\n\n  /**\n   * Our websafe alphabet.\n   */\n  get ENCODED_VALS_WEBSAFE() {\n    return this.ENCODED_VALS_BASE + '-_.';\n  },\n\n  /**\n   * Whether this browser supports the atob and btoa functions. This extension\n   * started at Mozilla but is now implemented by many browsers. We use the\n   * ASSUME_* variables to avoid pulling in the full useragent detection library\n   * but still allowing the standard per-browser compilations.\n   *\n   */\n  HAS_NATIVE_SUPPORT: typeof atob === 'function',\n\n  /**\n   * Base64-encode an array of bytes.\n   *\n   * @param input An array of bytes (numbers with\n   *     value in [0, 255]) to encode.\n   * @param webSafe Boolean indicating we should use the\n   *     alternative alphabet.\n   * @return The base64 encoded string.\n   */\n  encodeByteArray(input: number[] | Uint8Array, webSafe?: boolean): string {\n    if (!Array.isArray(input)) {\n      throw Error('encodeByteArray takes an array as a parameter');\n    }\n\n    this.init_();\n\n    const byteToCharMap = webSafe\n      ? this.byteToCharMapWebSafe_!\n      : this.byteToCharMap_!;\n\n    const output = [];\n\n    for (let i = 0; i < input.length; i += 3) {\n      const byte1 = input[i];\n      const haveByte2 = i + 1 < input.length;\n      const byte2 = haveByte2 ? input[i + 1] : 0;\n      const haveByte3 = i + 2 < input.length;\n      const byte3 = haveByte3 ? input[i + 2] : 0;\n\n      const outByte1 = byte1 >> 2;\n      const outByte2 = ((byte1 & 0x03) << 4) | (byte2 >> 4);\n      let outByte3 = ((byte2 & 0x0f) << 2) | (byte3 >> 6);\n      let outByte4 = byte3 & 0x3f;\n\n      if (!haveByte3) {\n        outByte4 = 64;\n\n        if (!haveByte2) {\n          outByte3 = 64;\n        }\n      }\n\n      output.push(\n        byteToCharMap[outByte1],\n        byteToCharMap[outByte2],\n        byteToCharMap[outByte3],\n        byteToCharMap[outByte4]\n      );\n    }\n\n    return output.join('');\n  },\n\n  /**\n   * Base64-encode a string.\n   *\n   * @param input A string to encode.\n   * @param webSafe If true, we should use the\n   *     alternative alphabet.\n   * @return The base64 encoded string.\n   */\n  encodeString(input: string, webSafe?: boolean): string {\n    // Shortcut for Mozilla browsers that implement\n    // a native base64 encoder in the form of \"btoa/atob\"\n    if (this.HAS_NATIVE_SUPPORT && !webSafe) {\n      return btoa(input);\n    }\n    return this.encodeByteArray(stringToByteArray(input), webSafe);\n  },\n\n  /**\n   * Base64-decode a string.\n   *\n   * @param input to decode.\n   * @param webSafe True if we should use the\n   *     alternative alphabet.\n   * @return string representing the decoded value.\n   */\n  decodeString(input: string, webSafe: boolean): string {\n    // Shortcut for Mozilla browsers that implement\n    // a native base64 encoder in the form of \"btoa/atob\"\n    if (this.HAS_NATIVE_SUPPORT && !webSafe) {\n      return atob(input);\n    }\n    return byteArrayToString(this.decodeStringToByteArray(input, webSafe));\n  },\n\n  /**\n   * Base64-decode a string.\n   *\n   * In base-64 decoding, groups of four characters are converted into three\n   * bytes.  If the encoder did not apply padding, the input length may not\n   * be a multiple of 4.\n   *\n   * In this case, the last group will have fewer than 4 characters, and\n   * padding will be inferred.  If the group has one or two characters, it decodes\n   * to one byte.  If the group has three characters, it decodes to two bytes.\n   *\n   * @param input Input to decode.\n   * @param webSafe True if we should use the web-safe alphabet.\n   * @return bytes representing the decoded value.\n   */\n  decodeStringToByteArray(input: string, webSafe: boolean): number[] {\n    this.init_();\n\n    const charToByteMap = webSafe\n      ? this.charToByteMapWebSafe_!\n      : this.charToByteMap_!;\n\n    const output: number[] = [];\n\n    for (let i = 0; i < input.length; ) {\n      const byte1 = charToByteMap[input.charAt(i++)];\n\n      const haveByte2 = i < input.length;\n      const byte2 = haveByte2 ? charToByteMap[input.charAt(i)] : 0;\n      ++i;\n\n      const haveByte3 = i < input.length;\n      const byte3 = haveByte3 ? charToByteMap[input.charAt(i)] : 64;\n      ++i;\n\n      const haveByte4 = i < input.length;\n      const byte4 = haveByte4 ? charToByteMap[input.charAt(i)] : 64;\n      ++i;\n\n      if (byte1 == null || byte2 == null || byte3 == null || byte4 == null) {\n        throw Error();\n      }\n\n      const outByte1 = (byte1 << 2) | (byte2 >> 4);\n      output.push(outByte1);\n\n      if (byte3 !== 64) {\n        const outByte2 = ((byte2 << 4) & 0xf0) | (byte3 >> 2);\n        output.push(outByte2);\n\n        if (byte4 !== 64) {\n          const outByte3 = ((byte3 << 6) & 0xc0) | byte4;\n          output.push(outByte3);\n        }\n      }\n    }\n\n    return output;\n  },\n\n  /**\n   * Lazy static initialization function. Called before\n   * accessing any of the static map variables.\n   * @private\n   */\n  init_() {\n    if (!this.byteToCharMap_) {\n      this.byteToCharMap_ = {};\n      this.charToByteMap_ = {};\n      this.byteToCharMapWebSafe_ = {};\n      this.charToByteMapWebSafe_ = {};\n\n      // We want quick mappings back and forth, so we precompute two maps.\n      for (let i = 0; i < this.ENCODED_VALS.length; i++) {\n        this.byteToCharMap_[i] = this.ENCODED_VALS.charAt(i);\n        this.charToByteMap_[this.byteToCharMap_[i]] = i;\n        this.byteToCharMapWebSafe_[i] = this.ENCODED_VALS_WEBSAFE.charAt(i);\n        this.charToByteMapWebSafe_[this.byteToCharMapWebSafe_[i]] = i;\n\n        // Be forgiving when decoding and correctly decode both encodings.\n        if (i >= this.ENCODED_VALS_BASE.length) {\n          this.charToByteMap_[this.ENCODED_VALS_WEBSAFE.charAt(i)] = i;\n          this.charToByteMapWebSafe_[this.ENCODED_VALS.charAt(i)] = i;\n        }\n      }\n    }\n  }\n};\n\n/**\n * URL-safe base64 encoding\n */\nexport const base64Encode = function (str: string): string {\n  const utf8Bytes = stringToByteArray(str);\n  return base64.encodeByteArray(utf8Bytes, true);\n};\n\n/**\n * URL-safe base64 decoding\n *\n * NOTE: DO NOT use the global atob() function - it does NOT support the\n * base64Url variant encoding.\n *\n * @param str To be decoded\n * @return Decoded result, if possible\n */\nexport const base64Decode = function (str: string): string | null {\n  try {\n    return base64.decodeString(str, true);\n  } catch (e) {\n    console.error('base64Decode failed: ', e);\n  }\n  return null;\n};\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * Do a deep-copy of basic JavaScript Objects or Arrays.\n */\nexport function deepCopy<T>(value: T): T {\n  return deepExtend(undefined, value) as T;\n}\n\n/**\n * Copy properties from source to target (recursively allows extension\n * of Objects and Arrays).  Scalar values in the target are over-written.\n * If target is undefined, an object of the appropriate type will be created\n * (and returned).\n *\n * We recursively copy all child properties of plain Objects in the source- so\n * that namespace- like dictionaries are merged.\n *\n * Note that the target can be a function, in which case the properties in\n * the source Object are copied onto it as static properties of the Function.\n *\n * Note: we don't merge __proto__ to prevent prototype pollution\n */\nexport function deepExtend(target: unknown, source: unknown): unknown {\n  if (!(source instanceof Object)) {\n    return source;\n  }\n\n  switch (source.constructor) {\n    case Date:\n      // Treat Dates like scalars; if the target date object had any child\n      // properties - they will be lost!\n      const dateValue = source as Date;\n      return new Date(dateValue.getTime());\n\n    case Object:\n      if (target === undefined) {\n        target = {};\n      }\n      break;\n    case Array:\n      // Always copy the array source and overwrite the target.\n      target = [];\n      break;\n\n    default:\n      // Not a plain Object - treat it as a scalar.\n      return source;\n  }\n\n  for (const prop in source) {\n    // use isValidKey to guard against prototype pollution. See https://snyk.io/vuln/SNYK-JS-LODASH-450202\n    if (!source.hasOwnProperty(prop) || !isValidKey(prop)) {\n      continue;\n    }\n    (target as Record<string, unknown>)[prop] = deepExtend(\n      (target as Record<string, unknown>)[prop],\n      (source as Record<string, unknown>)[prop]\n    );\n  }\n\n  return target;\n}\n\nfunction isValidKey(key: string): boolean {\n  return key !== '__proto__';\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nexport class Deferred<R> {\n  promise: Promise<R>;\n  reject: (value?: unknown) => void = () => {};\n  resolve: (value?: unknown) => void = () => {};\n  constructor() {\n    this.promise = new Promise((resolve, reject) => {\n      this.resolve = resolve as (value?: unknown) => void;\n      this.reject = reject as (value?: unknown) => void;\n    });\n  }\n\n  /**\n   * Our API internals are not promiseified and cannot because our callback APIs have subtle expectations around\n   * invoking promises inline, which Promises are forbidden to do. This method accepts an optional node-style callback\n   * and returns a node-style callback which will resolve or reject the Deferred's promise.\n   */\n  wrapCallback(\n    callback?: (error?: unknown, value?: unknown) => void\n  ): (error: unknown, value?: unknown) => void {\n    return (error, value?) => {\n      if (error) {\n        this.reject(error);\n      } else {\n        this.resolve(value);\n      }\n      if (typeof callback === 'function') {\n        // Attaching noop handler just in case developer wasn't expecting\n        // promises\n        this.promise.catch(() => {});\n\n        // Some of our callbacks don't expect a value and our own tests\n        // assert that the parameter length is 1\n        if (callback.length === 1) {\n          callback(error);\n        } else {\n          callback(error, value);\n        }\n      }\n    };\n  }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { CONSTANTS } from './constants';\n\n/**\n * Returns navigator.userAgent string or '' if it's not defined.\n * @return user agent string\n */\nexport function getUA(): string {\n  if (\n    typeof navigator !== 'undefined' &&\n    typeof navigator['userAgent'] === 'string'\n  ) {\n    return navigator['userAgent'];\n  } else {\n    return '';\n  }\n}\n\n/**\n * Detect Cordova / PhoneGap / Ionic frameworks on a mobile device.\n *\n * Deliberately does not rely on checking `file://` URLs (as this fails PhoneGap\n * in the Ripple emulator) nor Cordova `onDeviceReady`, which would normally\n * wait for a callback.\n */\nexport function isMobileCordova(): boolean {\n  return (\n    typeof window !== 'undefined' &&\n    // @ts-ignore Setting up an broadly applicable index signature for Window\n    // just to deal with this case would probably be a bad idea.\n    !!(window['cordova'] || window['phonegap'] || window['PhoneGap']) &&\n    /ios|iphone|ipod|ipad|android|blackberry|iemobile/i.test(getUA())\n  );\n}\n\n/**\n * Detect Node.js.\n *\n * @return true if Node.js environment is detected.\n */\n// Node detection logic from: https://github.com/iliakan/detect-node/\nexport function isNode(): boolean {\n  try {\n    return (\n      Object.prototype.toString.call(global.process) === '[object process]'\n    );\n  } catch (e) {\n    return false;\n  }\n}\n\n/**\n * Detect Browser Environment\n */\nexport function isBrowser(): boolean {\n  return typeof self === 'object' && self.self === self;\n}\n\n/**\n * Detect browser extensions (Chrome and Firefox at least).\n */\ninterface BrowserRuntime {\n  id?: unknown;\n}\ndeclare const chrome: { runtime?: BrowserRuntime };\ndeclare const browser: { runtime?: BrowserRuntime };\nexport function isBrowserExtension(): boolean {\n  const runtime =\n    typeof chrome === 'object'\n      ? chrome.runtime\n      : typeof browser === 'object'\n      ? browser.runtime\n      : undefined;\n  return typeof runtime === 'object' && runtime.id !== undefined;\n}\n\n/**\n * Detect React Native.\n *\n * @return true if ReactNative environment is detected.\n */\nexport function isReactNative(): boolean {\n  return (\n    typeof navigator === 'object' && navigator['product'] === 'ReactNative'\n  );\n}\n\n/** Detects Electron apps. */\nexport function isElectron(): boolean {\n  return getUA().indexOf('Electron/') >= 0;\n}\n\n/** Detects Internet Explorer. */\nexport function isIE(): boolean {\n  const ua = getUA();\n  return ua.indexOf('MSIE ') >= 0 || ua.indexOf('Trident/') >= 0;\n}\n\n/** Detects Universal Windows Platform apps. */\nexport function isUWP(): boolean {\n  return getUA().indexOf('MSAppHost/') >= 0;\n}\n\n/**\n * Detect whether the current SDK build is the Node version.\n *\n * @return true if it's the Node SDK build.\n */\nexport function isNodeSdk(): boolean {\n  return CONSTANTS.NODE_CLIENT === true || CONSTANTS.NODE_ADMIN === true;\n}\n\n/** Returns true if we are running in Safari. */\nexport function isSafari(): boolean {\n  return (\n    !isNode() &&\n    navigator.userAgent.includes('Safari') &&\n    !navigator.userAgent.includes('Chrome')\n  );\n}\n\n/**\n * This method checks if indexedDB is supported by current browser/service worker context\n * @return true if indexedDB is supported by current browser/service worker context\n */\nexport function isIndexedDBAvailable(): boolean {\n  return 'indexedDB' in self && indexedDB != null;\n}\n\n/**\n * This method validates browser context for indexedDB by opening a dummy indexedDB database and reject\n * if errors occur during the database open operation.\n */\nexport function validateIndexedDBOpenable(): Promise<boolean> {\n  return new Promise((resolve, reject) => {\n    try {\n      let preExist: boolean = true;\n      const DB_CHECK_NAME =\n        'validate-browser-context-for-indexeddb-analytics-module';\n      const request = window.indexedDB.open(DB_CHECK_NAME);\n      request.onsuccess = () => {\n        request.result.close();\n        // delete database only when it doesn't pre-exist\n        if (!preExist) {\n          window.indexedDB.deleteDatabase(DB_CHECK_NAME);\n        }\n        resolve(true);\n      };\n      request.onupgradeneeded = () => {\n        preExist = false;\n      };\n\n      request.onerror = () => {\n        reject(request.error?.message || '');\n      };\n    } catch (error) {\n      reject(error);\n    }\n  });\n}\n\n/**\n *\n * This method checks whether cookie is enabled within current browser\n * @return true if cookie is enabled within current browser\n */\nexport function areCookiesEnabled(): boolean {\n  if (!navigator || !navigator.cookieEnabled) {\n    return false;\n  }\n  return true;\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nexport function contains<T extends object>(obj: T, key: string): boolean {\n  return Object.prototype.hasOwnProperty.call(obj, key);\n}\n\nexport function safeGet<T extends object, K extends keyof T>(\n  obj: T,\n  key: K\n): T[K] | undefined {\n  if (Object.prototype.hasOwnProperty.call(obj, key)) {\n    return obj[key];\n  } else {\n    return undefined;\n  }\n}\n\nexport function isEmpty(obj: object): obj is {} {\n  for (const key in obj) {\n    if (Object.prototype.hasOwnProperty.call(obj, key)) {\n      return false;\n    }\n  }\n  return true;\n}\n\nexport function map<K extends string, V, U>(\n  obj: { [key in K]: V },\n  fn: (value: V, key: K, obj: { [key in K]: V }) => U,\n  contextObj?: unknown\n): { [key in K]: U } {\n  const res: Partial<{ [key in K]: U }> = {};\n  for (const key in obj) {\n    if (Object.prototype.hasOwnProperty.call(obj, key)) {\n      res[key] = fn.call(contextObj, obj[key], key, obj);\n    }\n  }\n  return res as { [key in K]: U };\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview SHA-1 cryptographic hash.\n * Variable names follow the notation in FIPS PUB 180-3:\n * http://csrc.nist.gov/publications/fips/fips180-3/fips180-3_final.pdf.\n *\n * Usage:\n *   var sha1 = new sha1();\n *   sha1.update(bytes);\n *   var hash = sha1.digest();\n *\n * Performance:\n *   Chrome 23:   ~400 Mbit/s\n *   Firefox 16:  ~250 Mbit/s\n *\n */\n\n/**\n * SHA-1 cryptographic hash constructor.\n *\n * The properties declared here are discussed in the above algorithm document.\n * @constructor\n * @final\n * @struct\n */\nexport class Sha1 {\n  /**\n   * Holds the previous values of accumulated variables a-e in the compress_\n   * function.\n   * @private\n   */\n  private chain_: number[] = [];\n\n  /**\n   * A buffer holding the partially computed hash result.\n   * @private\n   */\n  private buf_: number[] = [];\n\n  /**\n   * An array of 80 bytes, each a part of the message to be hashed.  Referred to\n   * as the message schedule in the docs.\n   * @private\n   */\n  private W_: number[] = [];\n\n  /**\n   * Contains data needed to pad messages less than 64 bytes.\n   * @private\n   */\n  private pad_: number[] = [];\n\n  /**\n   * @private {number}\n   */\n  private inbuf_: number = 0;\n\n  /**\n   * @private {number}\n   */\n  private total_: number = 0;\n\n  blockSize: number;\n\n  constructor() {\n    this.blockSize = 512 / 8;\n\n    this.pad_[0] = 128;\n    for (let i = 1; i < this.blockSize; ++i) {\n      this.pad_[i] = 0;\n    }\n\n    this.reset();\n  }\n\n  reset(): void {\n    this.chain_[0] = 0x67452301;\n    this.chain_[1] = 0xefcdab89;\n    this.chain_[2] = 0x98badcfe;\n    this.chain_[3] = 0x10325476;\n    this.chain_[4] = 0xc3d2e1f0;\n\n    this.inbuf_ = 0;\n    this.total_ = 0;\n  }\n\n  /**\n   * Internal compress helper function.\n   * @param buf Block to compress.\n   * @param offset Offset of the block in the buffer.\n   * @private\n   */\n  compress_(buf: number[] | Uint8Array | string, offset?: number): void {\n    if (!offset) {\n      offset = 0;\n    }\n\n    const W = this.W_;\n\n    // get 16 big endian words\n    if (typeof buf === 'string') {\n      for (let i = 0; i < 16; i++) {\n        // TODO(user): [bug 8140122] Recent versions of Safari for Mac OS and iOS\n        // have a bug that turns the post-increment ++ operator into pre-increment\n        // during JIT compilation.  We have code that depends heavily on SHA-1 for\n        // correctness and which is affected by this bug, so I've removed all uses\n        // of post-increment ++ in which the result value is used.  We can revert\n        // this change once the Safari bug\n        // (https://bugs.webkit.org/show_bug.cgi?id=109036) has been fixed and\n        // most clients have been updated.\n        W[i] =\n          (buf.charCodeAt(offset) << 24) |\n          (buf.charCodeAt(offset + 1) << 16) |\n          (buf.charCodeAt(offset + 2) << 8) |\n          buf.charCodeAt(offset + 3);\n        offset += 4;\n      }\n    } else {\n      for (let i = 0; i < 16; i++) {\n        W[i] =\n          (buf[offset] << 24) |\n          (buf[offset + 1] << 16) |\n          (buf[offset + 2] << 8) |\n          buf[offset + 3];\n        offset += 4;\n      }\n    }\n\n    // expand to 80 words\n    for (let i = 16; i < 80; i++) {\n      const t = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16];\n      W[i] = ((t << 1) | (t >>> 31)) & 0xffffffff;\n    }\n\n    let a = this.chain_[0];\n    let b = this.chain_[1];\n    let c = this.chain_[2];\n    let d = this.chain_[3];\n    let e = this.chain_[4];\n    let f, k;\n\n    // TODO(user): Try to unroll this loop to speed up the computation.\n    for (let i = 0; i < 80; i++) {\n      if (i < 40) {\n        if (i < 20) {\n          f = d ^ (b & (c ^ d));\n          k = 0x5a827999;\n        } else {\n          f = b ^ c ^ d;\n          k = 0x6ed9eba1;\n        }\n      } else {\n        if (i < 60) {\n          f = (b & c) | (d & (b | c));\n          k = 0x8f1bbcdc;\n        } else {\n          f = b ^ c ^ d;\n          k = 0xca62c1d6;\n        }\n      }\n\n      const t = (((a << 5) | (a >>> 27)) + f + e + k + W[i]) & 0xffffffff;\n      e = d;\n      d = c;\n      c = ((b << 30) | (b >>> 2)) & 0xffffffff;\n      b = a;\n      a = t;\n    }\n\n    this.chain_[0] = (this.chain_[0] + a) & 0xffffffff;\n    this.chain_[1] = (this.chain_[1] + b) & 0xffffffff;\n    this.chain_[2] = (this.chain_[2] + c) & 0xffffffff;\n    this.chain_[3] = (this.chain_[3] + d) & 0xffffffff;\n    this.chain_[4] = (this.chain_[4] + e) & 0xffffffff;\n  }\n\n  update(bytes?: number[] | Uint8Array | string, length?: number): void {\n    // TODO(johnlenz): tighten the function signature and remove this check\n    if (bytes == null) {\n      return;\n    }\n\n    if (length === undefined) {\n      length = bytes.length;\n    }\n\n    const lengthMinusBlock = length - this.blockSize;\n    let n = 0;\n    // Using local instead of member variables gives ~5% speedup on Firefox 16.\n    const buf = this.buf_;\n    let inbuf = this.inbuf_;\n\n    // The outer while loop should execute at most twice.\n    while (n < length) {\n      // When we have no data in the block to top up, we can directly process the\n      // input buffer (assuming it contains sufficient data). This gives ~25%\n      // speedup on Chrome 23 and ~15% speedup on Firefox 16, but requires that\n      // the data is provided in large chunks (or in multiples of 64 bytes).\n      if (inbuf === 0) {\n        while (n <= lengthMinusBlock) {\n          this.compress_(bytes, n);\n          n += this.blockSize;\n        }\n      }\n\n      if (typeof bytes === 'string') {\n        while (n < length) {\n          buf[inbuf] = bytes.charCodeAt(n);\n          ++inbuf;\n          ++n;\n          if (inbuf === this.blockSize) {\n            this.compress_(buf);\n            inbuf = 0;\n            // Jump to the outer loop so we use the full-block optimization.\n            break;\n          }\n        }\n      } else {\n        while (n < length) {\n          buf[inbuf] = bytes[n];\n          ++inbuf;\n          ++n;\n          if (inbuf === this.blockSize) {\n            this.compress_(buf);\n            inbuf = 0;\n            // Jump to the outer loop so we use the full-block optimization.\n            break;\n          }\n        }\n      }\n    }\n\n    this.inbuf_ = inbuf;\n    this.total_ += length;\n  }\n\n  /** @override */\n  digest(): number[] {\n    const digest: number[] = [];\n    let totalBits = this.total_ * 8;\n\n    // Add pad 0x80 0x00*.\n    if (this.inbuf_ < 56) {\n      this.update(this.pad_, 56 - this.inbuf_);\n    } else {\n      this.update(this.pad_, this.blockSize - (this.inbuf_ - 56));\n    }\n\n    // Add # bits.\n    for (let i = this.blockSize - 1; i >= 56; i--) {\n      this.buf_[i] = totalBits & 255;\n      totalBits /= 256; // Don't use bit-shifting here!\n    }\n\n    this.compress_(this.buf_);\n\n    let n = 0;\n    for (let i = 0; i < 5; i++) {\n      for (let j = 24; j >= 0; j -= 8) {\n        digest[n] = (this.chain_[i] >> j) & 255;\n        ++n;\n      }\n    }\n    return digest;\n  }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nexport type NextFn<T> = (value: T) => void;\nexport type ErrorFn = (error: Error) => void;\nexport type CompleteFn = () => void;\n\nexport interface Observer<T> {\n  // Called once for each value in a stream of values.\n  next: NextFn<T>;\n\n  // A stream terminates by a single call to EITHER error() or complete().\n  error: ErrorFn;\n\n  // No events will be sent to next() once complete() is called.\n  complete: CompleteFn;\n}\n\nexport type PartialObserver<T> = Partial<Observer<T>>;\n\n// TODO: Support also Unsubscribe.unsubscribe?\nexport type Unsubscribe = () => void;\n\n/**\n * The Subscribe interface has two forms - passing the inline function\n * callbacks, or a object interface with callback properties.\n */\nexport interface Subscribe<T> {\n  (next?: NextFn<T>, error?: ErrorFn, complete?: CompleteFn): Unsubscribe;\n  (observer: PartialObserver<T>): Unsubscribe;\n}\n\nexport interface Observable<T> {\n  // Subscribe method\n  subscribe: Subscribe<T>;\n}\n\nexport type Executor<T> = (observer: Observer<T>) => void;\n\n/**\n * Helper to make a Subscribe function (just like Promise helps make a\n * Thenable).\n *\n * @param executor Function which can make calls to a single Observer\n *     as a proxy.\n * @param onNoObservers Callback when count of Observers goes to zero.\n */\nexport function createSubscribe<T>(\n  executor: Executor<T>,\n  onNoObservers?: Executor<T>\n): Subscribe<T> {\n  const proxy = new ObserverProxy<T>(executor, onNoObservers);\n  return proxy.subscribe.bind(proxy);\n}\n\n/**\n * Implement fan-out for any number of Observers attached via a subscribe\n * function.\n */\nclass ObserverProxy<T> implements Observer<T> {\n  private observers: Array<Observer<T>> | undefined = [];\n  private unsubscribes: Unsubscribe[] = [];\n  private onNoObservers: Executor<T> | undefined;\n  private observerCount = 0;\n  // Micro-task scheduling by calling task.then().\n  private task = Promise.resolve();\n  private finalized = false;\n  private finalError?: Error;\n\n  /**\n   * @param executor Function which can make calls to a single Observer\n   *     as a proxy.\n   * @param onNoObservers Callback when count of Observers goes to zero.\n   */\n  constructor(executor: Executor<T>, onNoObservers?: Executor<T>) {\n    this.onNoObservers = onNoObservers;\n    // Call the executor asynchronously so subscribers that are called\n    // synchronously after the creation of the subscribe function\n    // can still receive the very first value generated in the executor.\n    this.task\n      .then(() => {\n        executor(this);\n      })\n      .catch(e => {\n        this.error(e);\n      });\n  }\n\n  next(value: T): void {\n    this.forEachObserver((observer: Observer<T>) => {\n      observer.next(value);\n    });\n  }\n\n  error(error: Error): void {\n    this.forEachObserver((observer: Observer<T>) => {\n      observer.error(error);\n    });\n    this.close(error);\n  }\n\n  complete(): void {\n    this.forEachObserver((observer: Observer<T>) => {\n      observer.complete();\n    });\n    this.close();\n  }\n\n  /**\n   * Subscribe function that can be used to add an Observer to the fan-out list.\n   *\n   * - We require that no event is sent to a subscriber sychronously to their\n   *   call to subscribe().\n   */\n  subscribe(\n    nextOrObserver?: NextFn<T> | PartialObserver<T>,\n    error?: ErrorFn,\n    complete?: CompleteFn\n  ): Unsubscribe {\n    let observer: Observer<T>;\n\n    if (\n      nextOrObserver === undefined &&\n      error === undefined &&\n      complete === undefined\n    ) {\n      throw new Error('Missing Observer.');\n    }\n\n    // Assemble an Observer object when passed as callback functions.\n    if (\n      implementsAnyMethods(nextOrObserver as { [key: string]: unknown }, [\n        'next',\n        'error',\n        'complete'\n      ])\n    ) {\n      observer = nextOrObserver as Observer<T>;\n    } else {\n      observer = {\n        next: nextOrObserver as NextFn<T>,\n        error,\n        complete\n      } as Observer<T>;\n    }\n\n    if (observer.next === undefined) {\n      observer.next = noop as NextFn<T>;\n    }\n    if (observer.error === undefined) {\n      observer.error = noop as ErrorFn;\n    }\n    if (observer.complete === undefined) {\n      observer.complete = noop as CompleteFn;\n    }\n\n    const unsub = this.unsubscribeOne.bind(this, this.observers!.length);\n\n    // Attempt to subscribe to a terminated Observable - we\n    // just respond to the Observer with the final error or complete\n    // event.\n    if (this.finalized) {\n      // eslint-disable-next-line @typescript-eslint/no-floating-promises\n      this.task.then(() => {\n        try {\n          if (this.finalError) {\n            observer.error(this.finalError);\n          } else {\n            observer.complete();\n          }\n        } catch (e) {\n          // nothing\n        }\n        return;\n      });\n    }\n\n    this.observers!.push(observer as Observer<T>);\n\n    return unsub;\n  }\n\n  // Unsubscribe is synchronous - we guarantee that no events are sent to\n  // any unsubscribed Observer.\n  private unsubscribeOne(i: number): void {\n    if (this.observers === undefined || this.observers[i] === undefined) {\n      return;\n    }\n\n    delete this.observers[i];\n\n    this.observerCount -= 1;\n    if (this.observerCount === 0 && this.onNoObservers !== undefined) {\n      this.onNoObservers(this);\n    }\n  }\n\n  private forEachObserver(fn: (observer: Observer<T>) => void): void {\n    if (this.finalized) {\n      // Already closed by previous event....just eat the additional values.\n      return;\n    }\n\n    // Since sendOne calls asynchronously - there is no chance that\n    // this.observers will become undefined.\n    for (let i = 0; i < this.observers!.length; i++) {\n      this.sendOne(i, fn);\n    }\n  }\n\n  // Call the Observer via one of it's callback function. We are careful to\n  // confirm that the observe has not been unsubscribed since this asynchronous\n  // function had been queued.\n  private sendOne(i: number, fn: (observer: Observer<T>) => void): void {\n    // Execute the callback asynchronously\n    // eslint-disable-next-line @typescript-eslint/no-floating-promises\n    this.task.then(() => {\n      if (this.observers !== undefined && this.observers[i] !== undefined) {\n        try {\n          fn(this.observers[i]);\n        } catch (e) {\n          // Ignore exceptions raised in Observers or missing methods of an\n          // Observer.\n          // Log error to console. b/31404806\n          if (typeof console !== 'undefined' && console.error) {\n            console.error(e);\n          }\n        }\n      }\n    });\n  }\n\n  private close(err?: Error): void {\n    if (this.finalized) {\n      return;\n    }\n    this.finalized = true;\n    if (err !== undefined) {\n      this.finalError = err;\n    }\n    // Proxy is no longer needed - garbage collect references\n    // eslint-disable-next-line @typescript-eslint/no-floating-promises\n    this.task.then(() => {\n      this.observers = undefined;\n      this.onNoObservers = undefined;\n    });\n  }\n}\n\n/** Turn synchronous function into one called asynchronously. */\n// eslint-disable-next-line @typescript-eslint/ban-types\nexport function async(fn: Function, onError?: ErrorFn): Function {\n  return (...args: unknown[]) => {\n    Promise.resolve(true)\n      .then(() => {\n        fn(...args);\n      })\n      .catch((error: Error) => {\n        if (onError) {\n          onError(error);\n        }\n      });\n  };\n}\n\n/**\n * Return true if the object passed in implements any of the named methods.\n */\nfunction implementsAnyMethods(\n  obj: { [key: string]: unknown },\n  methods: string[]\n): boolean {\n  if (typeof obj !== 'object' || obj === null) {\n    return false;\n  }\n\n  for (const method of methods) {\n    if (method in obj && typeof obj[method] === 'function') {\n      return true;\n    }\n  }\n\n  return false;\n}\n\nfunction noop(): void {\n  // do nothing\n}\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\nif (process.env.NODE_ENV !== 'production') {\n  var ReactIs = require('react-is');\n\n  // By explicitly using `prop-types` you are opting into new development behavior.\n  // http://fb.me/prop-types-in-prod\n  var throwOnDirectAccess = true;\n  module.exports = require('./factoryWithTypeCheckers')(ReactIs.isElement, throwOnDirectAccess);\n} else {\n  // By explicitly using `prop-types` you are opting into new production behavior.\n  // http://fb.me/prop-types-in-prod\n  module.exports = require('./factoryWithThrowingShims')();\n}\n","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n\"use strict\";\r\nimport { getGlobal, strShimUndefined, strShimObject, strShimPrototype } from \"@microsoft/applicationinsights-shims\";\r\nimport { isString, isUndefined, strContains } from \"./HelperFuncs\";\r\n/**\r\n * This file exists to hold environment utilities that are required to check and\r\n * validate the current operating environment. Unless otherwise required, please\r\n * only use defined methods (functions) in this class so that users of these\r\n * functions/properties only need to include those that are used within their own modules.\r\n */\r\nvar strWindow = \"window\";\r\nvar strDocument = \"document\";\r\nvar strNavigator = \"navigator\";\r\nvar strHistory = \"history\";\r\nvar strLocation = \"location\";\r\nvar strConsole = \"console\";\r\nvar strPerformance = \"performance\";\r\nvar strJSON = \"JSON\";\r\nvar strCrypto = \"crypto\";\r\nvar strMsCrypto = \"msCrypto\";\r\nvar strReactNative = \"ReactNative\";\r\nvar strMsie = \"msie\";\r\nvar strTrident = \"trident/\";\r\nvar _isTrident = null;\r\nvar _navUserAgentCheck = null;\r\nvar _enableMocks = false;\r\nvar _useXDomainRequest = null;\r\nvar _beaconsSupported = null;\r\nfunction _hasProperty(theClass, property) {\r\n    var supported = false;\r\n    if (theClass) {\r\n        try {\r\n            supported = property in theClass;\r\n            if (!supported) {\r\n                var proto = theClass[strShimPrototype];\r\n                if (proto) {\r\n                    supported = property in proto;\r\n                }\r\n            }\r\n        }\r\n        catch (e) {\r\n            // Do Nothing\r\n        }\r\n        if (!supported) {\r\n            try {\r\n                var tmp = new theClass();\r\n                supported = !isUndefined(tmp[property]);\r\n            }\r\n            catch (e) {\r\n                // Do Nothing\r\n            }\r\n        }\r\n    }\r\n    return supported;\r\n}\r\n/**\r\n * Enable the lookup of test mock objects if requested\r\n * @param enabled\r\n */\r\nexport function setEnableEnvMocks(enabled) {\r\n    _enableMocks = enabled;\r\n}\r\n/**\r\n * Return the named global object if available, will return null if the object is not available.\r\n * @param name The globally named object\r\n */\r\nexport function getGlobalInst(name) {\r\n    var gbl = getGlobal();\r\n    if (gbl && gbl[name]) {\r\n        return gbl[name];\r\n    }\r\n    // Test workaround, for environments where <global>.window (when global == window) doesn't return the base window\r\n    if (name === strWindow && hasWindow()) {\r\n        // tslint:disable-next-line: no-angle-bracket-type-assertion\r\n        return window;\r\n    }\r\n    return null;\r\n}\r\n/**\r\n * Checks if window object is available, this is required as we support the API running without a\r\n * window /document (eg. Node server, electron webworkers) and if we attempt to assign a window\r\n * object to a local variable or pass as an argument an \"Uncaught ReferenceError: window is not defined\"\r\n * exception will be thrown.\r\n * Defined as a function to support lazy / late binding environments.\r\n */\r\nexport function hasWindow() {\r\n    return Boolean(typeof window === strShimObject && window);\r\n}\r\n/**\r\n * Returns the global window object if it is present otherwise null.\r\n * This helper is used to access the window object without causing an exception\r\n * \"Uncaught ReferenceError: window is not defined\"\r\n */\r\nexport function getWindow() {\r\n    if (hasWindow()) {\r\n        return window;\r\n    }\r\n    // Return the global instance or null\r\n    return getGlobalInst(strWindow);\r\n}\r\n/**\r\n * Checks if document object is available, this is required as we support the API running without a\r\n * window /document (eg. Node server, electron webworkers) and if we attempt to assign a document\r\n * object to a local variable or pass as an argument an \"Uncaught ReferenceError: document is not defined\"\r\n * exception will be thrown.\r\n * Defined as a function to support lazy / late binding environments.\r\n */\r\nexport function hasDocument() {\r\n    return Boolean(typeof document === strShimObject && document);\r\n}\r\n/**\r\n * Returns the global document object if it is present otherwise null.\r\n * This helper is used to access the document object without causing an exception\r\n * \"Uncaught ReferenceError: document is not defined\"\r\n */\r\nexport function getDocument() {\r\n    if (hasDocument()) {\r\n        return document;\r\n    }\r\n    return getGlobalInst(strDocument);\r\n}\r\n/**\r\n * Checks if navigator object is available, this is required as we support the API running without a\r\n * window /document (eg. Node server, electron webworkers) and if we attempt to assign a navigator\r\n * object to a local variable or pass as an argument an \"Uncaught ReferenceError: navigator is not defined\"\r\n * exception will be thrown.\r\n * Defined as a function to support lazy / late binding environments.\r\n */\r\nexport function hasNavigator() {\r\n    return Boolean(typeof navigator === strShimObject && navigator);\r\n}\r\n/**\r\n * Returns the global navigator object if it is present otherwise null.\r\n * This helper is used to access the navigator object without causing an exception\r\n * \"Uncaught ReferenceError: navigator is not defined\"\r\n */\r\nexport function getNavigator() {\r\n    if (hasNavigator()) {\r\n        return navigator;\r\n    }\r\n    return getGlobalInst(strNavigator);\r\n}\r\n/**\r\n * Checks if history object is available, this is required as we support the API running without a\r\n * window /document (eg. Node server, electron webworkers) and if we attempt to assign a history\r\n * object to a local variable or pass as an argument an \"Uncaught ReferenceError: history is not defined\"\r\n * exception will be thrown.\r\n * Defined as a function to support lazy / late binding environments.\r\n */\r\nexport function hasHistory() {\r\n    return Boolean(typeof history === strShimObject && history);\r\n}\r\n/**\r\n * Returns the global history object if it is present otherwise null.\r\n * This helper is used to access the history object without causing an exception\r\n * \"Uncaught ReferenceError: history is not defined\"\r\n */\r\nexport function getHistory() {\r\n    if (hasHistory()) {\r\n        return history;\r\n    }\r\n    return getGlobalInst(strHistory);\r\n}\r\n/**\r\n * Returns the global location object if it is present otherwise null.\r\n * This helper is used to access the location object without causing an exception\r\n * \"Uncaught ReferenceError: location is not defined\"\r\n */\r\nexport function getLocation(checkForMock) {\r\n    if (checkForMock && _enableMocks) {\r\n        var mockLocation = getGlobalInst(\"__mockLocation\");\r\n        if (mockLocation) {\r\n            return mockLocation;\r\n        }\r\n    }\r\n    if (typeof location === strShimObject && location) {\r\n        return location;\r\n    }\r\n    return getGlobalInst(strLocation);\r\n}\r\n/**\r\n * Returns the global console object\r\n */\r\nexport function getConsole() {\r\n    if (typeof console !== strShimUndefined) {\r\n        return console;\r\n    }\r\n    return getGlobalInst(strConsole);\r\n}\r\n/**\r\n * Returns the performance object if it is present otherwise null.\r\n * This helper is used to access the performance object from the current\r\n * global instance which could be window or globalThis for a web worker\r\n */\r\nexport function getPerformance() {\r\n    return getGlobalInst(strPerformance);\r\n}\r\n/**\r\n * Checks if JSON object is available, this is required as we support the API running without a\r\n * window /document (eg. Node server, electron webworkers) and if we attempt to assign a history\r\n * object to a local variable or pass as an argument an \"Uncaught ReferenceError: JSON is not defined\"\r\n * exception will be thrown.\r\n * Defined as a function to support lazy / late binding environments.\r\n */\r\nexport function hasJSON() {\r\n    return Boolean((typeof JSON === strShimObject && JSON) || getGlobalInst(strJSON) !== null);\r\n}\r\n/**\r\n * Returns the global JSON object if it is present otherwise null.\r\n * This helper is used to access the JSON object without causing an exception\r\n * \"Uncaught ReferenceError: JSON is not defined\"\r\n */\r\nexport function getJSON() {\r\n    if (hasJSON()) {\r\n        return JSON || getGlobalInst(strJSON);\r\n    }\r\n    return null;\r\n}\r\n/**\r\n * Returns the crypto object if it is present otherwise null.\r\n * This helper is used to access the crypto object from the current\r\n * global instance which could be window or globalThis for a web worker\r\n */\r\nexport function getCrypto() {\r\n    return getGlobalInst(strCrypto);\r\n}\r\n/**\r\n * Returns the crypto object if it is present otherwise null.\r\n * This helper is used to access the crypto object from the current\r\n * global instance which could be window or globalThis for a web worker\r\n */\r\nexport function getMsCrypto() {\r\n    return getGlobalInst(strMsCrypto);\r\n}\r\n/**\r\n * Returns whether the environment is reporting that we are running in a React Native Environment\r\n */\r\nexport function isReactNative() {\r\n    // If running in React Native, navigator.product will be populated\r\n    var nav = getNavigator();\r\n    if (nav && nav.product) {\r\n        return nav.product === strReactNative;\r\n    }\r\n    return false;\r\n}\r\n/**\r\n * Identifies whether the current environment appears to be IE\r\n */\r\nexport function isIE() {\r\n    var nav = getNavigator();\r\n    if (nav && (nav.userAgent !== _navUserAgentCheck || _isTrident === null)) {\r\n        // Added to support test mocking of the user agent\r\n        _navUserAgentCheck = nav.userAgent;\r\n        var userAgent = (_navUserAgentCheck || \"\").toLowerCase();\r\n        _isTrident = (strContains(userAgent, strMsie) || strContains(userAgent, strTrident));\r\n    }\r\n    return _isTrident;\r\n}\r\n/**\r\n * Gets IE version returning the document emulation mode if we are running on IE, or null otherwise\r\n */\r\nexport function getIEVersion(userAgentStr) {\r\n    if (userAgentStr === void 0) { userAgentStr = null; }\r\n    if (!userAgentStr) {\r\n        var navigator_1 = getNavigator() || {};\r\n        userAgentStr = navigator_1 ? (navigator_1.userAgent || \"\").toLowerCase() : \"\";\r\n    }\r\n    var ua = (userAgentStr || \"\").toLowerCase();\r\n    if (strContains(ua, strMsie)) {\r\n        return parseInt(ua.split(strMsie)[1]);\r\n    }\r\n    else if (strContains(ua, strTrident)) {\r\n        var tridentVer = parseInt(ua.split(strTrident)[1]);\r\n        if (tridentVer) {\r\n            return tridentVer + 4;\r\n        }\r\n    }\r\n    return null;\r\n}\r\n/**\r\n * Returns string representation of an object suitable for diagnostics logging.\r\n */\r\nexport function dumpObj(object) {\r\n    var objectTypeDump = Object[strShimPrototype].toString.call(object);\r\n    var propertyValueDump = \"\";\r\n    if (objectTypeDump === \"[object Error]\") {\r\n        propertyValueDump = \"{ stack: '\" + object.stack + \"', message: '\" + object.message + \"', name: '\" + object.name + \"'\";\r\n    }\r\n    else if (hasJSON()) {\r\n        propertyValueDump = getJSON().stringify(object);\r\n    }\r\n    return objectTypeDump + propertyValueDump;\r\n}\r\nexport function isSafari(userAgentStr) {\r\n    if (!userAgentStr || !isString(userAgentStr)) {\r\n        var navigator_2 = getNavigator() || {};\r\n        userAgentStr = navigator_2 ? (navigator_2.userAgent || \"\").toLowerCase() : \"\";\r\n    }\r\n    var ua = (userAgentStr || \"\").toLowerCase();\r\n    return (ua.indexOf(\"safari\") >= 0);\r\n}\r\n/**\r\n * Checks if HTML5 Beacons are supported in the current environment.\r\n * @returns True if supported, false otherwise.\r\n */\r\nexport function isBeaconsSupported() {\r\n    if (_beaconsSupported === null) {\r\n        _beaconsSupported = hasNavigator() && Boolean(getNavigator().sendBeacon);\r\n    }\r\n    return _beaconsSupported;\r\n}\r\n/**\r\n * Checks if the Fetch API is supported in the current environment.\r\n * @param withKeepAlive - [Optional] If True, check if fetch is available and it supports the keepalive feature, otherwise only check if fetch is supported\r\n * @returns True if supported, otherwise false\r\n */\r\nexport function isFetchSupported(withKeepAlive) {\r\n    var isSupported = false;\r\n    try {\r\n        var fetchApi = getGlobalInst(\"fetch\");\r\n        isSupported = !!fetchApi;\r\n        var request = getGlobalInst(\"Request\");\r\n        if (isSupported && withKeepAlive && request) {\r\n            isSupported = _hasProperty(request, \"keepalive\");\r\n        }\r\n    }\r\n    catch (e) {\r\n        // Just Swallow any failure during availability checks\r\n    }\r\n    return isSupported;\r\n}\r\nexport function useXDomainRequest() {\r\n    if (_useXDomainRequest === null) {\r\n        _useXDomainRequest = (typeof XDomainRequest !== undefined);\r\n        if (_useXDomainRequest && isXhrSupported()) {\r\n            _useXDomainRequest = _useXDomainRequest && !_hasProperty(getGlobalInst(\"XMLHttpRequest\"), \"withCredentials\");\r\n        }\r\n    }\r\n    return _useXDomainRequest;\r\n}\r\n/**\r\n * Checks if XMLHttpRequest is supported\r\n * @returns True if supported, otherwise false\r\n */\r\nexport function isXhrSupported() {\r\n    var isSupported = false;\r\n    try {\r\n        var xmlHttpRequest = getGlobalInst(\"XMLHttpRequest\");\r\n        isSupported = !!xmlHttpRequest;\r\n    }\r\n    catch (e) {\r\n        // Just Swallow any failure during availability checks\r\n    }\r\n    return isSupported;\r\n}\r\n//# sourceMappingURL=EnvUtils.js.map","// TODO: Replace with React.createContext once we can assume React 16+\nimport createContext from \"mini-create-react-context\";\n\nconst createNamedContext = name => {\n  const context = createContext();\n  context.displayName = name;\n\n  return context;\n};\n\nexport default createNamedContext;\n","import createNamedContext from \"./createNameContext\";\n\nconst historyContext = /*#__PURE__*/ createNamedContext(\"Router-History\");\nexport default historyContext;\n","import createNamedContext from \"./createNameContext\";\n\nconst context = /*#__PURE__*/ createNamedContext(\"Router\");\nexport default context;\n","import React from \"react\";\nimport PropTypes from \"prop-types\";\nimport warning from \"tiny-warning\";\n\nimport HistoryContext from \"./HistoryContext.js\";\nimport RouterContext from \"./RouterContext.js\";\n\n/**\n * The public API for putting history on context.\n */\nclass Router extends React.Component {\n  static computeRootMatch(pathname) {\n    return { path: \"/\", url: \"/\", params: {}, isExact: pathname === \"/\" };\n  }\n\n  constructor(props) {\n    super(props);\n\n    this.state = {\n      location: props.history.location\n    };\n\n    // This is a bit of a hack. We have to start listening for location\n    // changes here in the constructor in case there are any <Redirect>s\n    // on the initial render. If there are, they will replace/push when\n    // they mount and since cDM fires in children before parents, we may\n    // get a new location before the <Router> is mounted.\n    this._isMounted = false;\n    this._pendingLocation = null;\n\n    if (!props.staticContext) {\n      this.unlisten = props.history.listen(location => {\n        if (this._isMounted) {\n          this.setState({ location });\n        } else {\n          this._pendingLocation = location;\n        }\n      });\n    }\n  }\n\n  componentDidMount() {\n    this._isMounted = true;\n\n    if (this._pendingLocation) {\n      this.setState({ location: this._pendingLocation });\n    }\n  }\n\n  componentWillUnmount() {\n    if (this.unlisten) {\n      this.unlisten();\n      this._isMounted = false;\n      this._pendingLocation = null;\n    }\n  }\n\n  render() {\n    return (\n      <RouterContext.Provider\n        value={{\n          history: this.props.history,\n          location: this.state.location,\n          match: Router.computeRootMatch(this.state.location.pathname),\n          staticContext: this.props.staticContext\n        }}\n      >\n        <HistoryContext.Provider\n          children={this.props.children || null}\n          value={this.props.history}\n        />\n      </RouterContext.Provider>\n    );\n  }\n}\n\nif (__DEV__) {\n  Router.propTypes = {\n    children: PropTypes.node,\n    history: PropTypes.object.isRequired,\n    staticContext: PropTypes.object\n  };\n\n  Router.prototype.componentDidUpdate = function(prevProps) {\n    warning(\n      prevProps.history === this.props.history,\n      \"You cannot change <Router history>\"\n    );\n  };\n}\n\nexport default Router;\n","import React from \"react\";\nimport PropTypes from \"prop-types\";\nimport { createMemoryHistory as createHistory } from \"history\";\nimport warning from \"tiny-warning\";\n\nimport Router from \"./Router.js\";\n\n/**\n * The public API for a <Router> that stores location in memory.\n */\nclass MemoryRouter extends React.Component {\n  history = createHistory(this.props);\n\n  render() {\n    return <Router history={this.history} children={this.props.children} />;\n  }\n}\n\nif (__DEV__) {\n  MemoryRouter.propTypes = {\n    initialEntries: PropTypes.array,\n    initialIndex: PropTypes.number,\n    getUserConfirmation: PropTypes.func,\n    keyLength: PropTypes.number,\n    children: PropTypes.node\n  };\n\n  MemoryRouter.prototype.componentDidMount = function() {\n    warning(\n      !this.props.history,\n      \"<MemoryRouter> ignores the history prop. To use a custom history, \" +\n        \"use `import { Router }` instead of `import { MemoryRouter as Router }`.\"\n    );\n  };\n}\n\nexport default MemoryRouter;\n","import React from \"react\";\n\nclass Lifecycle extends React.Component {\n  componentDidMount() {\n    if (this.props.onMount) this.props.onMount.call(this, this);\n  }\n\n  componentDidUpdate(prevProps) {\n    if (this.props.onUpdate) this.props.onUpdate.call(this, this, prevProps);\n  }\n\n  componentWillUnmount() {\n    if (this.props.onUnmount) this.props.onUnmount.call(this, this);\n  }\n\n  render() {\n    return null;\n  }\n}\n\nexport default Lifecycle;\n","import pathToRegexp from \"path-to-regexp\";\n\nconst cache = {};\nconst cacheLimit = 10000;\nlet cacheCount = 0;\n\nfunction compilePath(path, options) {\n  const cacheKey = `${options.end}${options.strict}${options.sensitive}`;\n  const pathCache = cache[cacheKey] || (cache[cacheKey] = {});\n\n  if (pathCache[path]) return pathCache[path];\n\n  const keys = [];\n  const regexp = pathToRegexp(path, keys, options);\n  const result = { regexp, keys };\n\n  if (cacheCount < cacheLimit) {\n    pathCache[path] = result;\n    cacheCount++;\n  }\n\n  return result;\n}\n\n/**\n * Public API for matching a URL pathname to a path.\n */\nfunction matchPath(pathname, options = {}) {\n  if (typeof options === \"string\" || Array.isArray(options)) {\n    options = { path: options };\n  }\n\n  const { path, exact = false, strict = false, sensitive = false } = options;\n\n  const paths = [].concat(path);\n\n  return paths.reduce((matched, path) => {\n    if (!path && path !== \"\") return null;\n    if (matched) return matched;\n\n    const { regexp, keys } = compilePath(path, {\n      end: exact,\n      strict,\n      sensitive\n    });\n    const match = regexp.exec(pathname);\n\n    if (!match) return null;\n\n    const [url, ...values] = match;\n    const isExact = pathname === url;\n\n    if (exact && !isExact) return null;\n\n    return {\n      path, // the path used to match\n      url: path === \"/\" && url === \"\" ? \"/\" : url, // the matched portion of the URL\n      isExact, // whether or not we matched exactly\n      params: keys.reduce((memo, key, index) => {\n        memo[key.name] = values[index];\n        return memo;\n      }, {})\n    };\n  }, null);\n}\n\nexport default matchPath;\n","import React from \"react\";\nimport { isValidElementType } from \"react-is\";\nimport PropTypes from \"prop-types\";\nimport invariant from \"tiny-invariant\";\nimport warning from \"tiny-warning\";\n\nimport RouterContext from \"./RouterContext.js\";\nimport matchPath from \"./matchPath.js\";\n\nfunction isEmptyChildren(children) {\n  return React.Children.count(children) === 0;\n}\n\nfunction evalChildrenDev(children, props, path) {\n  const value = children(props);\n\n  warning(\n    value !== undefined,\n    \"You returned `undefined` from the `children` function of \" +\n      `<Route${path ? ` path=\"${path}\"` : \"\"}>, but you ` +\n      \"should have returned a React element or `null`\"\n  );\n\n  return value || null;\n}\n\n/**\n * The public API for matching a single path and rendering.\n */\nclass Route extends React.Component {\n  render() {\n    return (\n      <RouterContext.Consumer>\n        {context => {\n          invariant(context, \"You should not use <Route> outside a <Router>\");\n\n          const location = this.props.location || context.location;\n          const match = this.props.computedMatch\n            ? this.props.computedMatch // <Switch> already computed the match for us\n            : this.props.path\n            ? matchPath(location.pathname, this.props)\n            : context.match;\n\n          const props = { ...context, location, match };\n\n          let { children, component, render } = this.props;\n\n          // Preact uses an empty array as children by\n          // default, so use null if that's the case.\n          if (Array.isArray(children) && isEmptyChildren(children)) {\n            children = null;\n          }\n\n          return (\n            <RouterContext.Provider value={props}>\n              {props.match\n                ? children\n                  ? typeof children === \"function\"\n                    ? __DEV__\n                      ? evalChildrenDev(children, props, this.props.path)\n                      : children(props)\n                    : children\n                  : component\n                  ? React.createElement(component, props)\n                  : render\n                  ? render(props)\n                  : null\n                : typeof children === \"function\"\n                ? __DEV__\n                  ? evalChildrenDev(children, props, this.props.path)\n                  : children(props)\n                : null}\n            </RouterContext.Provider>\n          );\n        }}\n      </RouterContext.Consumer>\n    );\n  }\n}\n\nif (__DEV__) {\n  Route.propTypes = {\n    children: PropTypes.oneOfType([PropTypes.func, PropTypes.node]),\n    component: (props, propName) => {\n      if (props[propName] && !isValidElementType(props[propName])) {\n        return new Error(\n          `Invalid prop 'component' supplied to 'Route': the prop is not a valid React component`\n        );\n      }\n    },\n    exact: PropTypes.bool,\n    location: PropTypes.object,\n    path: PropTypes.oneOfType([\n      PropTypes.string,\n      PropTypes.arrayOf(PropTypes.string)\n    ]),\n    render: PropTypes.func,\n    sensitive: PropTypes.bool,\n    strict: PropTypes.bool\n  };\n\n  Route.prototype.componentDidMount = function() {\n    warning(\n      !(\n        this.props.children &&\n        !isEmptyChildren(this.props.children) &&\n        this.props.component\n      ),\n      \"You should not use <Route component> and <Route children> in the same route; <Route component> will be ignored\"\n    );\n\n    warning(\n      !(\n        this.props.children &&\n        !isEmptyChildren(this.props.children) &&\n        this.props.render\n      ),\n      \"You should not use <Route render> and <Route children> in the same route; <Route render> will be ignored\"\n    );\n\n    warning(\n      !(this.props.component && this.props.render),\n      \"You should not use <Route component> and <Route render> in the same route; <Route render> will be ignored\"\n    );\n  };\n\n  Route.prototype.componentDidUpdate = function(prevProps) {\n    warning(\n      !(this.props.location && !prevProps.location),\n      '<Route> elements should not change from uncontrolled to controlled (or vice versa). You initially used no \"location\" prop and then provided one on a subsequent render.'\n    );\n\n    warning(\n      !(!this.props.location && prevProps.location),\n      '<Route> elements should not change from controlled to uncontrolled (or vice versa). You provided a \"location\" prop initially but omitted it on a subsequent render.'\n    );\n  };\n}\n\nexport default Route;\n","import React from \"react\";\nimport PropTypes from \"prop-types\";\nimport { createLocation, createPath } from \"history\";\nimport invariant from \"tiny-invariant\";\nimport warning from \"tiny-warning\";\n\nimport Router from \"./Router.js\";\n\nfunction addLeadingSlash(path) {\n  return path.charAt(0) === \"/\" ? path : \"/\" + path;\n}\n\nfunction addBasename(basename, location) {\n  if (!basename) return location;\n\n  return {\n    ...location,\n    pathname: addLeadingSlash(basename) + location.pathname\n  };\n}\n\nfunction stripBasename(basename, location) {\n  if (!basename) return location;\n\n  const base = addLeadingSlash(basename);\n\n  if (location.pathname.indexOf(base) !== 0) return location;\n\n  return {\n    ...location,\n    pathname: location.pathname.substr(base.length)\n  };\n}\n\nfunction createURL(location) {\n  return typeof location === \"string\" ? location : createPath(location);\n}\n\nfunction staticHandler(methodName) {\n  return () => {\n    invariant(false, \"You cannot %s with <StaticRouter>\", methodName);\n  };\n}\n\nfunction noop() {}\n\n/**\n * The public top-level API for a \"static\" <Router>, so-called because it\n * can't actually change the current location. Instead, it just records\n * location changes in a context object. Useful mainly in testing and\n * server-rendering scenarios.\n */\nclass StaticRouter extends React.Component {\n  navigateTo(location, action) {\n    const { basename = \"\", context = {} } = this.props;\n    context.action = action;\n    context.location = addBasename(basename, createLocation(location));\n    context.url = createURL(context.location);\n  }\n\n  handlePush = location => this.navigateTo(location, \"PUSH\");\n  handleReplace = location => this.navigateTo(location, \"REPLACE\");\n  handleListen = () => noop;\n  handleBlock = () => noop;\n\n  render() {\n    const { basename = \"\", context = {}, location = \"/\", ...rest } = this.props;\n\n    const history = {\n      createHref: path => addLeadingSlash(basename + createURL(path)),\n      action: \"POP\",\n      location: stripBasename(basename, createLocation(location)),\n      push: this.handlePush,\n      replace: this.handleReplace,\n      go: staticHandler(\"go\"),\n      goBack: staticHandler(\"goBack\"),\n      goForward: staticHandler(\"goForward\"),\n      listen: this.handleListen,\n      block: this.handleBlock\n    };\n\n    return <Router {...rest} history={history} staticContext={context} />;\n  }\n}\n\nif (__DEV__) {\n  StaticRouter.propTypes = {\n    basename: PropTypes.string,\n    context: PropTypes.object,\n    location: PropTypes.oneOfType([PropTypes.string, PropTypes.object])\n  };\n\n  StaticRouter.prototype.componentDidMount = function() {\n    warning(\n      !this.props.history,\n      \"<StaticRouter> ignores the history prop. To use a custom history, \" +\n        \"use `import { Router }` instead of `import { StaticRouter as Router }`.\"\n    );\n  };\n}\n\nexport default StaticRouter;\n","import React from \"react\";\nimport PropTypes from \"prop-types\";\nimport invariant from \"tiny-invariant\";\nimport warning from \"tiny-warning\";\n\nimport RouterContext from \"./RouterContext.js\";\nimport matchPath from \"./matchPath.js\";\n\n/**\n * The public API for rendering the first <Route> that matches.\n */\nclass Switch extends React.Component {\n  render() {\n    return (\n      <RouterContext.Consumer>\n        {context => {\n          invariant(context, \"You should not use <Switch> outside a <Router>\");\n\n          const location = this.props.location || context.location;\n\n          let element, match;\n\n          // We use React.Children.forEach instead of React.Children.toArray().find()\n          // here because toArray adds keys to all child elements and we do not want\n          // to trigger an unmount/remount for two <Route>s that render the same\n          // component at different URLs.\n          React.Children.forEach(this.props.children, child => {\n            if (match == null && React.isValidElement(child)) {\n              element = child;\n\n              const path = child.props.path || child.props.from;\n\n              match = path\n                ? matchPath(location.pathname, { ...child.props, path })\n                : context.match;\n            }\n          });\n\n          return match\n            ? React.cloneElement(element, { location, computedMatch: match })\n            : null;\n        }}\n      </RouterContext.Consumer>\n    );\n  }\n}\n\nif (__DEV__) {\n  Switch.propTypes = {\n    children: PropTypes.node,\n    location: PropTypes.object\n  };\n\n  Switch.prototype.componentDidUpdate = function(prevProps) {\n    warning(\n      !(this.props.location && !prevProps.location),\n      '<Switch> elements should not change from uncontrolled to controlled (or vice versa). You initially used no \"location\" prop and then provided one on a subsequent render.'\n    );\n\n    warning(\n      !(!this.props.location && prevProps.location),\n      '<Switch> elements should not change from controlled to uncontrolled (or vice versa). You provided a \"location\" prop initially but omitted it on a subsequent render.'\n    );\n  };\n}\n\nexport default Switch;\n","import React from \"react\";\nimport PropTypes from \"prop-types\";\nimport hoistStatics from \"hoist-non-react-statics\";\nimport invariant from \"tiny-invariant\";\n\nimport RouterContext from \"./RouterContext.js\";\n\n/**\n * A public higher-order component to access the imperative API\n */\nfunction withRouter(Component) {\n  const displayName = `withRouter(${Component.displayName || Component.name})`;\n  const C = props => {\n    const { wrappedComponentRef, ...remainingProps } = props;\n\n    return (\n      <RouterContext.Consumer>\n        {context => {\n          invariant(\n            context,\n            `You should not use <${displayName} /> outside a <Router>`\n          );\n          return (\n            <Component\n              {...remainingProps}\n              {...context}\n              ref={wrappedComponentRef}\n            />\n          );\n        }}\n      </RouterContext.Consumer>\n    );\n  };\n\n  C.displayName = displayName;\n  C.WrappedComponent = Component;\n\n  if (__DEV__) {\n    C.propTypes = {\n      wrappedComponentRef: PropTypes.oneOfType([\n        PropTypes.string,\n        PropTypes.func,\n        PropTypes.object\n      ])\n    };\n  }\n\n  return hoistStatics(C, Component);\n}\n\nexport default withRouter;\n","import React from \"react\";\nimport invariant from \"tiny-invariant\";\n\nimport RouterContext from \"./RouterContext.js\";\nimport HistoryContext from \"./HistoryContext.js\";\nimport matchPath from \"./matchPath.js\";\n\nconst useContext = React.useContext;\n\nexport function useHistory() {\n  if (__DEV__) {\n    invariant(\n      typeof useContext === \"function\",\n      \"You must use React >= 16.8 in order to use useHistory()\"\n    );\n  }\n\n  return useContext(HistoryContext);\n}\n\nexport function useLocation() {\n  if (__DEV__) {\n    invariant(\n      typeof useContext === \"function\",\n      \"You must use React >= 16.8 in order to use useLocation()\"\n    );\n  }\n\n  return useContext(RouterContext).location;\n}\n\nexport function useParams() {\n  if (__DEV__) {\n    invariant(\n      typeof useContext === \"function\",\n      \"You must use React >= 16.8 in order to use useParams()\"\n    );\n  }\n\n  const match = useContext(RouterContext).match;\n  return match ? match.params : {};\n}\n\nexport function useRouteMatch(path) {\n  if (__DEV__) {\n    invariant(\n      typeof useContext === \"function\",\n      \"You must use React >= 16.8 in order to use useRouteMatch()\"\n    );\n  }\n\n  const location = useLocation();\n  const match = useContext(RouterContext).match;\n  return path ? matchPath(location.pathname, path) : match;\n}\n","export default function _objectWithoutPropertiesLoose(source, excluded) {\n  if (source == null) return {};\n  var target = {};\n  var sourceKeys = Object.keys(source);\n  var key, i;\n\n  for (i = 0; i < sourceKeys.length; i++) {\n    key = sourceKeys[i];\n    if (excluded.indexOf(key) >= 0) continue;\n    target[key] = source[key];\n  }\n\n  return target;\n}","export default function _defineProperty(obj, key, value) {\n  if (key in obj) {\n    Object.defineProperty(obj, key, {\n      value: value,\n      enumerable: true,\n      configurable: true,\n      writable: true\n    });\n  } else {\n    obj[key] = value;\n  }\n\n  return obj;\n}","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nexport var LoggingSeverity;\r\n(function (LoggingSeverity) {\r\n    /**\r\n     * Error will be sent as internal telemetry\r\n     */\r\n    LoggingSeverity[LoggingSeverity[\"CRITICAL\"] = 1] = \"CRITICAL\";\r\n    /**\r\n     * Error will NOT be sent as internal telemetry, and will only be shown in browser console\r\n     */\r\n    LoggingSeverity[LoggingSeverity[\"WARNING\"] = 2] = \"WARNING\";\r\n})(LoggingSeverity || (LoggingSeverity = {}));\r\n/**\r\n * Internal message ID. Please create a new one for every conceptually different message. Please keep alphabetically ordered\r\n */\r\nexport var _InternalMessageId = {\r\n    // Non user actionable\r\n    BrowserDoesNotSupportLocalStorage: 0,\r\n    BrowserCannotReadLocalStorage: 1,\r\n    BrowserCannotReadSessionStorage: 2,\r\n    BrowserCannotWriteLocalStorage: 3,\r\n    BrowserCannotWriteSessionStorage: 4,\r\n    BrowserFailedRemovalFromLocalStorage: 5,\r\n    BrowserFailedRemovalFromSessionStorage: 6,\r\n    CannotSendEmptyTelemetry: 7,\r\n    ClientPerformanceMathError: 8,\r\n    ErrorParsingAISessionCookie: 9,\r\n    ErrorPVCalc: 10,\r\n    ExceptionWhileLoggingError: 11,\r\n    FailedAddingTelemetryToBuffer: 12,\r\n    FailedMonitorAjaxAbort: 13,\r\n    FailedMonitorAjaxDur: 14,\r\n    FailedMonitorAjaxOpen: 15,\r\n    FailedMonitorAjaxRSC: 16,\r\n    FailedMonitorAjaxSend: 17,\r\n    FailedMonitorAjaxGetCorrelationHeader: 18,\r\n    FailedToAddHandlerForOnBeforeUnload: 19,\r\n    FailedToSendQueuedTelemetry: 20,\r\n    FailedToReportDataLoss: 21,\r\n    FlushFailed: 22,\r\n    MessageLimitPerPVExceeded: 23,\r\n    MissingRequiredFieldSpecification: 24,\r\n    NavigationTimingNotSupported: 25,\r\n    OnError: 26,\r\n    SessionRenewalDateIsZero: 27,\r\n    SenderNotInitialized: 28,\r\n    StartTrackEventFailed: 29,\r\n    StopTrackEventFailed: 30,\r\n    StartTrackFailed: 31,\r\n    StopTrackFailed: 32,\r\n    TelemetrySampledAndNotSent: 33,\r\n    TrackEventFailed: 34,\r\n    TrackExceptionFailed: 35,\r\n    TrackMetricFailed: 36,\r\n    TrackPVFailed: 37,\r\n    TrackPVFailedCalc: 38,\r\n    TrackTraceFailed: 39,\r\n    TransmissionFailed: 40,\r\n    FailedToSetStorageBuffer: 41,\r\n    FailedToRestoreStorageBuffer: 42,\r\n    InvalidBackendResponse: 43,\r\n    FailedToFixDepricatedValues: 44,\r\n    InvalidDurationValue: 45,\r\n    TelemetryEnvelopeInvalid: 46,\r\n    CreateEnvelopeError: 47,\r\n    // User actionable\r\n    CannotSerializeObject: 48,\r\n    CannotSerializeObjectNonSerializable: 49,\r\n    CircularReferenceDetected: 50,\r\n    ClearAuthContextFailed: 51,\r\n    ExceptionTruncated: 52,\r\n    IllegalCharsInName: 53,\r\n    ItemNotInArray: 54,\r\n    MaxAjaxPerPVExceeded: 55,\r\n    MessageTruncated: 56,\r\n    NameTooLong: 57,\r\n    SampleRateOutOfRange: 58,\r\n    SetAuthContextFailed: 59,\r\n    SetAuthContextFailedAccountName: 60,\r\n    StringValueTooLong: 61,\r\n    StartCalledMoreThanOnce: 62,\r\n    StopCalledWithoutStart: 63,\r\n    TelemetryInitializerFailed: 64,\r\n    TrackArgumentsNotSpecified: 65,\r\n    UrlTooLong: 66,\r\n    SessionStorageBufferFull: 67,\r\n    CannotAccessCookie: 68,\r\n    IdTooLong: 69,\r\n    InvalidEvent: 70,\r\n    FailedMonitorAjaxSetRequestHeader: 71,\r\n    SendBrowserInfoOnUserInit: 72,\r\n    PluginException: 73,\r\n    NotificationException: 74,\r\n    SnippetScriptLoadFailure: 99,\r\n    InvalidInstrumentationKey: 100,\r\n    CannotParseAiBlobValue: 101,\r\n    InvalidContentBlob: 102,\r\n    TrackPageActionEventFailed: 103,\r\n    FailedAddingCustomDefinedRequestContext: 104,\r\n    InMemoryStorageBufferFull: 105\r\n};\r\n//# sourceMappingURL=LoggingEnums.js.map","import freeGlobal from './_freeGlobal.js';\n\n/** Detect free variable `self`. */\nvar freeSelf = typeof self == 'object' && self && self.Object === Object && self;\n\n/** Used as a reference to the global object. */\nvar root = freeGlobal || freeSelf || Function('return this')();\n\nexport default root;\n","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport React from 'react';\nimport PropTypes from 'prop-types';\nimport { exactProp } from '@material-ui/utils';\nimport ThemeContext from '../useTheme/ThemeContext';\nimport useTheme from '../useTheme';\nimport nested from './nested'; // To support composition of theme.\n\nfunction mergeOuterLocalTheme(outerTheme, localTheme) {\n  if (typeof localTheme === 'function') {\n    var mergedTheme = localTheme(outerTheme);\n\n    if (process.env.NODE_ENV !== 'production') {\n      if (!mergedTheme) {\n        console.error(['Material-UI: You should return an object from your theme function, i.e.', '<ThemeProvider theme={() => ({})} />'].join('\\n'));\n      }\n    }\n\n    return mergedTheme;\n  }\n\n  return _extends({}, outerTheme, localTheme);\n}\n/**\n * This component takes a `theme` prop.\n * It makes the `theme` available down the React tree thanks to React context.\n * This component should preferably be used at **the root of your component tree**.\n */\n\n\nfunction ThemeProvider(props) {\n  var children = props.children,\n      localTheme = props.theme;\n  var outerTheme = useTheme();\n\n  if (process.env.NODE_ENV !== 'production') {\n    if (outerTheme === null && typeof localTheme === 'function') {\n      console.error(['Material-UI: You are providing a theme function prop to the ThemeProvider component:', '<ThemeProvider theme={outerTheme => outerTheme} />', '', 'However, no outer theme is present.', 'Make sure a theme is already injected higher in the React tree ' + 'or provide a theme object.'].join('\\n'));\n    }\n  }\n\n  var theme = React.useMemo(function () {\n    var output = outerTheme === null ? localTheme : mergeOuterLocalTheme(outerTheme, localTheme);\n\n    if (output != null) {\n      output[nested] = outerTheme !== null;\n    }\n\n    return output;\n  }, [localTheme, outerTheme]);\n  return /*#__PURE__*/React.createElement(ThemeContext.Provider, {\n    value: theme\n  }, children);\n}\n\nprocess.env.NODE_ENV !== \"production\" ? ThemeProvider.propTypes = {\n  /**\n   * Your component tree.\n   */\n  children: PropTypes.node.isRequired,\n\n  /**\n   * A theme object. You can provide a function to extend the outer theme.\n   */\n  theme: PropTypes.oneOfType([PropTypes.object, PropTypes.func]).isRequired\n} : void 0;\n\nif (process.env.NODE_ENV !== 'production') {\n  process.env.NODE_ENV !== \"production\" ? ThemeProvider.propTypes = exactProp(ThemeProvider.propTypes) : void 0;\n}\n\nexport default ThemeProvider;",";\r\nexport var emptyCustomizations = {\r\n    images: {},\r\n    links: {},\r\n    strings: {},\r\n    tracking: {},\r\n    variables: {},\r\n    flags: {},\r\n    footer: {\r\n        rows: [],\r\n    },\r\n    player: {\r\n        brandUrl: \"\",\r\n        brandName: \"\",\r\n        staticThumbnail: \"\",\r\n        captionsFile: \"\",\r\n        logoUrl: \"\",\r\n        embededStyles: \"\",\r\n    },\r\n};\r\n","var purple = {\n  50: '#f3e5f5',\n  100: '#e1bee7',\n  200: '#ce93d8',\n  300: '#ba68c8',\n  400: '#ab47bc',\n  500: '#9c27b0',\n  600: '#8e24aa',\n  700: '#7b1fa2',\n  800: '#6a1b9a',\n  900: '#4a148c',\n  A100: '#ea80fc',\n  A200: '#e040fb',\n  A400: '#d500f9',\n  A700: '#aa00ff'\n};\nexport default purple;","var __assign = (this && this.__assign) || function () {\r\n    __assign = Object.assign || function(t) {\r\n        for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n            s = arguments[i];\r\n            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))\r\n                t[p] = s[p];\r\n        }\r\n        return t;\r\n    };\r\n    return __assign.apply(this, arguments);\r\n};\r\nvar __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {\r\n    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\r\n    return new (P || (P = Promise))(function (resolve, reject) {\r\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\r\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n    });\r\n};\r\nvar __generator = (this && this.__generator) || function (thisArg, body) {\r\n    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\r\n    return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n    function verb(n) { return function (v) { return step([n, v]); }; }\r\n    function step(op) {\r\n        if (f) throw new TypeError(\"Generator is already executing.\");\r\n        while (_) try {\r\n            if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\r\n            if (y = 0, t) op = [op[0] & 2, t.value];\r\n            switch (op[0]) {\r\n                case 0: case 1: t = op; break;\r\n                case 4: _.label++; return { value: op[1], done: false };\r\n                case 5: _.label++; y = op[1]; op = [0]; continue;\r\n                case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n                default:\r\n                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n                    if (t[2]) _.ops.pop();\r\n                    _.trys.pop(); continue;\r\n            }\r\n            op = body.call(thisArg, _);\r\n        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n    }\r\n};\r\nimport { matchPath } from \"react-router-dom\";\r\nvar SD_PREFIX = \"sd\";\r\nvar CLI_PREFIX = \"cl\";\r\nvar ENV_PREFIX = \"en\";\r\nvar bootstrapPath = \"https://personicommedia.blob.core.windows.net/bootstrap\";\r\nvar ENV_PATH = {\r\n    development: \"dev\",\r\n    localhost: \"dev\",\r\n    qa: \"qa\",\r\n    production: \"prod\",\r\n};\r\n//===\r\n// Gets a search parameter from the url by its name.  assumes search will be in the form: \"?key=value&key2=value2\"\r\nexport function getSearchParam(key) {\r\n    var search = new URLSearchParams(window.location.search.slice(1).toLowerCase());\r\n    return search.get(key);\r\n}\r\n//===\r\n// Fetches a file from a specific url as JSON and returns a JSON object\r\n//\r\nexport function fetchJsonFile(fileUrl) {\r\n    return __awaiter(this, void 0, void 0, function () {\r\n        var result, json, err_1, errMsg;\r\n        return __generator(this, function (_a) {\r\n            switch (_a.label) {\r\n                case 0:\r\n                    _a.trys.push([0, 5, , 8]);\r\n                    return [4 /*yield*/, fetch(fileUrl, { method: \"GET\" })];\r\n                case 1:\r\n                    result = _a.sent();\r\n                    if (!result.json) return [3 /*break*/, 3];\r\n                    return [4 /*yield*/, result.json()];\r\n                case 2:\r\n                    json = _a.sent();\r\n                    if (!result.ok) {\r\n                        return [2 /*return*/, __assign({ isError: true, status: result.status, message: result.statusText }, json)];\r\n                    }\r\n                    return [2 /*return*/, json]; //all good, just return the result\r\n                case 3:\r\n                    if (result.ok === true) {\r\n                        //Nothing to return, but all is good\r\n                        return [2 /*return*/, result];\r\n                    }\r\n                    _a.label = 4;\r\n                case 4: return [3 /*break*/, 8];\r\n                case 5:\r\n                    err_1 = _a.sent();\r\n                    errMsg = \"Unhandled exception during fetch. Our technical team has been notified.\";\r\n                    if (!err_1.text) return [3 /*break*/, 7];\r\n                    return [4 /*yield*/, err_1.text()];\r\n                case 6:\r\n                    errMsg = _a.sent();\r\n                    _a.label = 7;\r\n                case 7: return [2 /*return*/, {\r\n                        isError: true,\r\n                        message: errMsg\r\n                    }];\r\n                case 8: return [2 /*return*/];\r\n            }\r\n        });\r\n    });\r\n}\r\n//TODO: Move everything URL related into it's own thing. The logic is spread over too many helpers/components.\r\n//---\r\n//Gets the url to the customizations blob container for the current brand.\r\nexport function getBaseUrl() {\r\n    return __awaiter(this, void 0, void 0, function () {\r\n        var client, environment, shortenv, hostName, customizations_path, bootstrap_path, json;\r\n        return __generator(this, function (_a) {\r\n            switch (_a.label) {\r\n                case 0:\r\n                    client = getClientFromUrl();\r\n                    environment = getEnvironmentFromUrl();\r\n                    shortenv = ENV_PATH[environment];\r\n                    hostName = window.location.hostname.toLowerCase();\r\n                    //For dev environments, allow ServeStatic to take over.\r\n                    if (hostName.indexOf(\"localhost\") >= 0) {\r\n                        bootstrap_path = \"http://localhost:8100/personicom.com/bootstrap/localhost/\" + client + \".json\";\r\n                    }\r\n                    else {\r\n                        bootstrap_path = bootstrapPath + \"/\" + shortenv + \"/\" + client + \".json\";\r\n                    }\r\n                    console.log('Bootstrap: ' + bootstrap_path);\r\n                    if (!(hostName.indexOf(\"localhost\") >= 0)) return [3 /*break*/, 1];\r\n                    customizations_path = \"http://localhost:8100/\" + client;\r\n                    return [3 /*break*/, 3];\r\n                case 1: return [4 /*yield*/, fetchJsonFile(bootstrap_path)];\r\n                case 2:\r\n                    json = _a.sent();\r\n                    if (json.isError) {\r\n                        throw new Error(json.message);\r\n                    }\r\n                    customizations_path = json.customizations_path;\r\n                    _a.label = 3;\r\n                case 3:\r\n                    console.log(\"client: \" + client + \", hostname: \" + hostName + \", customizations_path: \" + customizations_path);\r\n                    return [2 /*return*/, customizations_path];\r\n            }\r\n        });\r\n    });\r\n}\r\n//===\r\n// Gets the client, which is the product that is using reporting.  Current options are \"universitymsgmedia\" or \"thevideobotmedia\"\r\n// url expected in the format of: reporting.[client].[com/net]?sd=[subdomain] or reporting.[client].localhost:XXXX?sd=[subdomain]\r\nexport function getClientFromUrl() {\r\n    var _a;\r\n    var client;\r\n    // The client eventually maps to the 'rootdomain' in the BrandTemplate field.\r\n    // Each client has one or more subdomains.\r\n    // We should always allow the URL param ( CLI_PREFIX ) to override any inferred values from host.\r\n    client = (_a = getSearchParam(CLI_PREFIX)) !== null && _a !== void 0 ? _a : \"\";\r\n    if (client) {\r\n        console.log(\"Client from URL:\" + client);\r\n        return client;\r\n    }\r\n    //Fall back to inferring the value from the host.\r\n    var host = window.location.host.toLowerCase();\r\n    var parts = host.split('.');\r\n    client = parts.length > 2 ? parts[1] + \".\" + parts[2] : \"\";\r\n    console.log(\"Client from Host:\" + client);\r\n    //TODO: make sure it ends with 'media' since the azure storage buckets all end with media?\r\n    // if(client && !client.endsWith(\"media\")) client = `${client}media`;\r\n    return client;\r\n}\r\n//===\r\n// Gets the subdomain for reporting, which currently is stored as a query parameter in the form: \"sd=[subdomain]\"\r\n// if no subdomain is defined, will return empty string.\r\n// url expected in the format of: reporting.[client].[com/net]?sd=[subdomain] or reporting.[client].localhost:XXXX?sd=[subdomain]\r\nexport function getSubdomainFromUrl() {\r\n    var _a;\r\n    var result = (_a = getSearchParam(SD_PREFIX)) !== null && _a !== void 0 ? _a : \"\";\r\n    //Query params always win.\r\n    if (result) {\r\n        return result;\r\n    }\r\n    //Check if we're in UM land, need to handle things a bit differently, eg: \r\n    //  http://pittunscripted.universitymsg.com.localhost:5100/app/bulk-upload\r\n    //  http://pittunscripted.universitymsg.com/app/bulk-upload\r\n    //  http://qa.universitymsg.com/pittunscripted/app/bulk-upload\r\n    //  http://dev.universitymsg.com/pittunscripted/app/bulk-upload\r\n    var host = window.location.host.toLowerCase();\r\n    if (host.indexOf(\"universitymsg\")\r\n        && !host.startsWith(\"app.\")\r\n        && !host.startsWith(\"player.\")\r\n        && !host.startsWith(\"demo.\")\r\n        && !host.startsWith(\"reporting.\")) {\r\n        return getSchoolFromUrl();\r\n    }\r\n    //Check for a match with the player path to see if the subdomain is there.\r\n    if (!result) {\r\n        var matchResult = matchPath(window.location.pathname, {\r\n            path: \"/:subdomain\",\r\n            exact: false,\r\n            strict: true,\r\n        });\r\n        if (matchResult) {\r\n            return matchResult.params[\"subdomain\"];\r\n        }\r\n    }\r\n    return result;\r\n}\r\nexport function getSchoolFromUrl() {\r\n    var school = \"default\";\r\n    //Need to support direct access to iFrame version in local, qa and dev\r\n    var pathParts = window.location.pathname.split('/');\r\n    if (pathParts.length === 3 && [\"iframe\", \"player\"].indexOf(pathParts[2].toLowerCase()) >= 0) {\r\n        school = pathParts[1];\r\n    }\r\n    else {\r\n        var host = window.location.host.toLowerCase();\r\n        //For dev/stage we're going to use the first path to specify subdomain. https://dev.universitymsg.com/nextstopnjit/\r\n        if (host.indexOf(\"dev.\") >= 0 || host.indexOf(\"qa.\") >= 0) {\r\n            school = window.location.pathname.split('/')[1];\r\n        }\r\n        else {\r\n            var partCount = host.indexOf(\"localhost\") >= 0 ? 1 : 2; //localhost doesn't have the .com, so expect different parts\r\n            var parts = host.split('.');\r\n            school = parts.length > partCount ? parts[0] : \"default\";\r\n        }\r\n    }\r\n    return school;\r\n}\r\n//===\r\n// Gets the environment for reporting.  This may be based on the hostname, or it might be in the querystring\r\n// depending on the environment and url.\r\nexport function getEnvironmentFromUrl() {\r\n    var env = getSearchParam(ENV_PREFIX);\r\n    if (!env) {\r\n        var hostName = window.location.hostname.toLowerCase();\r\n        if (hostName.indexOf(\"qa.\") >= 0) {\r\n            env = \"qa\";\r\n        }\r\n        else if (hostName.indexOf(\"dev.\") >= 0) {\r\n            env = \"development\"; //Allow for a query string override in development\r\n        }\r\n        else if (hostName.indexOf(\"localhost\") >= 0) {\r\n            env = \"development\"; //Allow for a query string override in development\r\n        }\r\n        else {\r\n            env = \"production\";\r\n        }\r\n    }\r\n    return env;\r\n}\r\n//===\r\n// Gets whether or not the app is running inside an iFrame\r\nexport function getIsInIframe() {\r\n    try {\r\n        return window.self !== window.top;\r\n    }\r\n    catch (e) {\r\n        return true;\r\n    }\r\n}\r\n","var __assign = (this && this.__assign) || function () {\r\n    __assign = Object.assign || function(t) {\r\n        for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n            s = arguments[i];\r\n            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))\r\n                t[p] = s[p];\r\n        }\r\n        return t;\r\n    };\r\n    return __assign.apply(this, arguments);\r\n};\r\nvar __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {\r\n    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\r\n    return new (P || (P = Promise))(function (resolve, reject) {\r\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\r\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n    });\r\n};\r\nvar __generator = (this && this.__generator) || function (thisArg, body) {\r\n    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\r\n    return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n    function verb(n) { return function (v) { return step([n, v]); }; }\r\n    function step(op) {\r\n        if (f) throw new TypeError(\"Generator is already executing.\");\r\n        while (_) try {\r\n            if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\r\n            if (y = 0, t) op = [op[0] & 2, t.value];\r\n            switch (op[0]) {\r\n                case 0: case 1: t = op; break;\r\n                case 4: _.label++; return { value: op[1], done: false };\r\n                case 5: _.label++; y = op[1]; op = [0]; continue;\r\n                case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n                default:\r\n                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n                    if (t[2]) _.ops.pop();\r\n                    _.trys.pop(); continue;\r\n            }\r\n            op = body.call(thisArg, _);\r\n        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n    }\r\n};\r\nimport { createMuiTheme } from '@material-ui/core/styles';\r\nimport { purple, green } from '@material-ui/core/colors';\r\nimport { fetchJsonFile, getEnvironmentFromUrl } from \"./general-helpers\";\r\n// const BASE_URI = \"https://[client].blob.core.windows.net/theme-config/[env]/[subdomain]/\";\r\nvar ENV_PATH = {\r\n    development: \"dev\",\r\n    localhost: \"dev\",\r\n    qa: \"qa\",\r\n    production: \"prod\",\r\n};\r\nexport var THEME_FILE = \"theme.json\";\r\nexport var LAYOUT_FILE = \"layout.json\";\r\n//Return most selective\r\nexport var blobUrl = function (path, subdomain, fileName, environment) {\r\n    var _a;\r\n    if (environment === void 0) { environment = null; }\r\n    var env = (_a = getEnvironmentFromUrl()) !== null && _a !== void 0 ? _a : environment;\r\n    var envPath = ENV_PATH[env.toLowerCase()];\r\n    var url = (subdomain) ?\r\n        path + \"/\" + envPath + \"/\" + subdomain + \"/\" + fileName //subdomain-specific files\r\n        : path + \"/\" + envPath + \"/\" + fileName; //Fallback to root.\r\n    return url;\r\n};\r\n//Return subdomain only file or fail\r\nexport var blobSubdomainUrl = function (path, subdomain, fileName, environment) {\r\n    var _a;\r\n    if (environment === void 0) { environment = null; }\r\n    if (!subdomain) {\r\n        return null;\r\n    }\r\n    var env = (_a = getEnvironmentFromUrl()) !== null && _a !== void 0 ? _a : environment;\r\n    var envPath = ENV_PATH[env.toLowerCase()];\r\n    var url = path + \"/\" + envPath + \"/\" + subdomain + \"/\" + fileName;\r\n    return url;\r\n};\r\n//===\r\n// Fetches the theme for this school/environment from the blob storage\r\n//\r\nexport function fetchBlobAsJson(path, subdomain, file) {\r\n    return __awaiter(this, void 0, void 0, function () {\r\n        var url;\r\n        return __generator(this, function (_a) {\r\n            switch (_a.label) {\r\n                case 0:\r\n                    url = blobUrl(path, subdomain, file);\r\n                    return [4 /*yield*/, fetchJsonFile(url)];\r\n                case 1: return [2 /*return*/, _a.sent()];\r\n            }\r\n        });\r\n    });\r\n}\r\n//===\r\n// Build the theme using the json theme from the blob storage\r\n//could set defaults here... but for now, this is just using gaudy colors so we know if we've missed something\r\nvar baseTheme = {\r\n    palette: {\r\n        primary: purple,\r\n        secondary: green,\r\n    },\r\n    overrides: {\r\n        MuiInputBase: {\r\n            root: {\r\n                fontFamily: '\"Lato\", serif',\r\n                \"& input\": {\r\n                    \"&:-webkit-autofill\": {\r\n                        transition: \"background-color 50000s ease-in-out 0s, color 50000s ease-in-out 0s\",\r\n                    },\r\n                    \"&:-webkit-autofill:focus\": {\r\n                        transition: \"background-color 50000s ease-in-out 0s, color 50000s ease-in-out 0s\",\r\n                    },\r\n                    \"&:-webkit-autofill:hover\": {\r\n                        transition: \"background-color 50000s ease-in-out 0s, color 50000s ease-in-out 0s\",\r\n                    },\r\n                },\r\n            },\r\n        },\r\n    }\r\n};\r\n//------\r\n// Gets the component-level overrides for the different controls\r\n// eslint-disable-next-line no-unused-vars\r\n// function getSubdomainOverrides(theme){\r\n//   if(!theme.components) return {};\r\n//   const cmp = theme.components;\r\n//   const overrides = {};\r\n//   if(cmp.input){\r\n//     overrides.MuiInputBase = {\r\n//       root: {\r\n//         ...cmp.input\r\n//       }\r\n//     }\r\n//   }\r\n//   if(cmp.typography){\r\n//     overrides.MuiTypography = {\r\n//       root: {\r\n//         ...cmp.typography,\r\n//       }\r\n//     }\r\n//   }\r\n//   return overrides;\r\n// }\r\nfunction omit(obj, fields) {\r\n    if (!obj)\r\n        return obj;\r\n    var result = Object.fromEntries(Object.entries(obj)\r\n        .filter(function (_a) {\r\n        var k = _a[0];\r\n        return !fields.includes(k);\r\n    }));\r\n    return result;\r\n}\r\n//-------\r\n// Creates theme customizations for the school\r\nfunction buildSubdomainTheme(theme) {\r\n    return {\r\n        palette: {\r\n            primary: {\r\n                main: theme.styles.page.borderColor, //This is used for the circular progress in the player\r\n            },\r\n            secondary: {\r\n                main: theme.styles.page.color,\r\n            },\r\n            background: {\r\n                default: theme.styles.page.backgroundColor, //This is used by CssBaseline (in app-header) to set the background color\r\n            }\r\n        },\r\n        typography: {\r\n            fontFamily: theme.styles.page.fontFamily,\r\n            fontSize: theme.styles.page.fontSize || 14,\r\n            fontWeight: theme.styles.page.fontWeight || \"normal\",\r\n        },\r\n        overrides: {\r\n            MuiInputBase: {\r\n                root: {\r\n                    fontFamily: theme.styles.page.fontFamily,\r\n                }\r\n            }\r\n        },\r\n        // TODO: Right now, the reports view is inside a white box, so\r\n        // don't include overrides?\r\n        // overrides: getSubdomainOverrides(theme),   //merge in the control style overrides\r\n        schoolColors: __assign({}, omit(theme.styles.page, [\"fontFamily\", \"fontSize\"])),\r\n        strings: theme.strings,\r\n        links: theme.links,\r\n        images: theme.images,\r\n        //convert flags into booleans\r\n        flags: Object.keys(theme.flags || {}).map(function (key) { return theme.flags[key] = Boolean(theme.flags[key]); }),\r\n        styles: theme.styles,\r\n    };\r\n}\r\n//-----------------\r\n// Creates and returns the custom theme for the Portal\r\nexport var buildTheme = function (theme) {\r\n    var schoolTheme = buildSubdomainTheme(theme);\r\n    var mergedTheme = __assign(__assign({}, baseTheme), schoolTheme);\r\n    return createMuiTheme(mergedTheme);\r\n};\r\n","var __assign = (this && this.__assign) || function () {\r\n    __assign = Object.assign || function(t) {\r\n        for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n            s = arguments[i];\r\n            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))\r\n                t[p] = s[p];\r\n        }\r\n        return t;\r\n    };\r\n    return __assign.apply(this, arguments);\r\n};\r\nimport { jsx as _jsx, jsxs as _jsxs } from \"react/jsx-runtime\";\r\nimport { makeStyles } from \"@material-ui/core/styles\";\r\nimport { Grid, Typography, Accordion, AccordionSummary, AccordionDetails } from \"@material-ui/core\";\r\nvar buildStyles = makeStyles(function (theme) { return ({\r\n    root: {\r\n        padding: theme.spacing(1),\r\n        marginTop: theme.spacing(2),\r\n        marginBottom: theme.spacing(2),\r\n    },\r\n    errorCard: {\r\n        width: \"40%\",\r\n        border: \"1px solid \" + theme.palette.error.dark,\r\n        borderRadius: 5,\r\n        // borderColor: theme.palette.error.main,\r\n        background: theme.palette.common.white,\r\n    },\r\n    errorContent: {\r\n        background: theme.palette.error.light + \"33\", //`\r\n    },\r\n    errorHeader: {\r\n        backgroundColor: theme.palette.error.light + \"55\",\r\n        borderBottomColor: theme.palette.error.main,\r\n        color: theme.palette.error.dark,\r\n        padding: theme.spacing(1) + \"px \" + theme.spacing(0) + \"px\", //`\r\n    },\r\n    errorBody: {\r\n        padding: theme.spacing(2),\r\n    },\r\n    title: {\r\n        fontSize: \"1.2rem\",\r\n    },\r\n    errorText: {\r\n        textAlign: \"center\",\r\n        fontSize: \"0.9rem\",\r\n        fontWeight: 300,\r\n    },\r\n    details: {\r\n        backgroundColor: theme.palette.error.light + \"11\",\r\n        width: \"100%\",\r\n    }\r\n}); });\r\nvar ErrorCard = function (_a) {\r\n    var message = _a.message, details = _a.details;\r\n    var classes = buildStyles();\r\n    return (_jsx(Grid, __assign({ id: \"error-view\", container: true, justifyContent: \"center\", className: classes.root }, { children: _jsx(Grid, __assign({ container: true, className: classes.errorCard }, { children: _jsxs(Grid, __assign({ container: true, className: classes.errorContent }, { children: [_jsx(Grid, __assign({ container: true, justifyContent: \"center\", className: classes.errorHeader }, { children: _jsx(Typography, __assign({ className: classes.title }, { children: \"Error\" }), void 0) }), void 0), _jsx(Grid, __assign({ container: true, justifyContent: \"center\", className: classes.errorBody }, { children: _jsx(Typography, __assign({ className: classes.errorText }, { children: message }), void 0) }), void 0), details &&\r\n                        _jsx(Grid, __assign({ container: true, className: classes.errorBody }, { children: _jsxs(Accordion, __assign({ variant: \"outlined\", className: classes.details }, { children: [_jsx(AccordionSummary, { children: _jsx(Typography, __assign({ className: classes.errorText }, { children: \"Details\" }), void 0) }, void 0), _jsx(AccordionDetails, { children: _jsx(Typography, __assign({ className: classes.errorText }, { children: details }), void 0) }, void 0)] }), void 0) }), void 0)] }), void 0) }), void 0) }), void 0));\r\n};\r\nexport default ErrorCard;\r\n","var __assign = (this && this.__assign) || function () {\r\n    __assign = Object.assign || function(t) {\r\n        for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n            s = arguments[i];\r\n            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))\r\n                t[p] = s[p];\r\n        }\r\n        return t;\r\n    };\r\n    return __assign.apply(this, arguments);\r\n};\r\nimport { jsx as _jsx, jsxs as _jsxs } from \"react/jsx-runtime\";\r\nimport { CircularProgress, Grid, Typography } from \"@material-ui/core\";\r\nvar LoadingIndicator = function (_a) {\r\n    var message = _a.message;\r\n    return (_jsxs(Grid, __assign({ container: true, direction: \"column\", alignItems: \"center\", style: { marginTop: \"10%\" } }, { children: [_jsx(CircularProgress, { color: \"primary\" }, void 0), _jsx(Typography, __assign({ component: \"span\", color: \"secondary\", style: { marginTop: \"8px\" } }, { children: message !== null && message !== void 0 ? message : \"Initializing...\" }), void 0)] }), void 0));\r\n};\r\nexport default LoadingIndicator;\r\n","var __assign = (this && this.__assign) || function () {\r\n    __assign = Object.assign || function(t) {\r\n        for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n            s = arguments[i];\r\n            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))\r\n                t[p] = s[p];\r\n        }\r\n        return t;\r\n    };\r\n    return __assign.apply(this, arguments);\r\n};\r\nvar __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {\r\n    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\r\n    return new (P || (P = Promise))(function (resolve, reject) {\r\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\r\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n    });\r\n};\r\nvar __generator = (this && this.__generator) || function (thisArg, body) {\r\n    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\r\n    return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n    function verb(n) { return function (v) { return step([n, v]); }; }\r\n    function step(op) {\r\n        if (f) throw new TypeError(\"Generator is already executing.\");\r\n        while (_) try {\r\n            if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\r\n            if (y = 0, t) op = [op[0] & 2, t.value];\r\n            switch (op[0]) {\r\n                case 0: case 1: t = op; break;\r\n                case 4: _.label++; return { value: op[1], done: false };\r\n                case 5: _.label++; y = op[1]; op = [0]; continue;\r\n                case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n                default:\r\n                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n                    if (t[2]) _.ops.pop();\r\n                    _.trys.pop(); continue;\r\n            }\r\n            op = body.call(thisArg, _);\r\n        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n    }\r\n};\r\nimport { jsx as _jsx, jsxs as _jsxs, Fragment as _Fragment } from \"react/jsx-runtime\";\r\nimport React, { useEffect, useMemo, useState } from \"react\";\r\nimport { ThemeProvider } from '@material-ui/core/styles';\r\nimport Grid from '@material-ui/core/Grid';\r\nimport { Helmet } from 'react-helmet';\r\nimport { emptyCustomizations } from \"./customization-types\";\r\nimport { fetchBlobAsJson, THEME_FILE, LAYOUT_FILE, buildTheme, blobUrl, blobSubdomainUrl } from \"./theme-helper\";\r\nimport ErrorCard from \"./error-card\";\r\nimport LoadingIndicator from \"./loading-indicator\";\r\nimport { getEnvironmentFromUrl, getSubdomainFromUrl, getClientFromUrl, getIsInIframe } from \"./general-helpers\";\r\n//===\r\n// The context that holds the customizations\r\nexport var CustomizationsContext = React.createContext({\r\n    isInitialized: false,\r\n    environment: \"\",\r\n    client: \"\",\r\n    subdomain: \"\",\r\n    isIframe: false,\r\n    customizations: {},\r\n    blobUrl: function () { return \"\"; },\r\n    blobSubdomainUrl: function () { return \"\"; },\r\n    blobRootUrl: function () { return \"\"; },\r\n    fetchFileAsJson: function () { return {}; },\r\n});\r\n//===\r\n// Provider to wrap the app and offer customizations and theme to all children.\r\nexport var CustomizationsProvider = function (_a) {\r\n    var _b, _c;\r\n    var path = _a.path, children = _a.children;\r\n    var _d = useState(false), isInitialized = _d[0], setInitialized = _d[1];\r\n    var _e = useState(emptyCustomizations), customizations = _e[0], setCustomizations = _e[1];\r\n    var _f = useState(null), themeJson = _f[0], setThemeJson = _f[1];\r\n    var _g = useState({}), theme = _g[0], setTheme = _g[1];\r\n    var _h = useState(null), themeError = _h[0], setThemeError = _h[1];\r\n    var client = useMemo(function () { return getClientFromUrl(); }, []);\r\n    var subdomain = useMemo(function () { return getSubdomainFromUrl(); }, []);\r\n    var environment = useMemo(function () { return getEnvironmentFromUrl(); }, []);\r\n    var isIframe = useMemo(function () { return getIsInIframe(); }, []);\r\n    //===\r\n    // Effect to initialize the provider\r\n    useEffect(function () {\r\n        function initialize() {\r\n            return __awaiter(this, void 0, void 0, function () {\r\n                var themeJson, layoutJson, subdomainTheme;\r\n                return __generator(this, function (_a) {\r\n                    switch (_a.label) {\r\n                        case 0:\r\n                            console.log(\"initializing Theme Provider: \\r\\n\\tClient: \" + client + \"\\r\\n\\tSubdomain: \" + subdomain + \"\\r\\n\\tEnvironment: \" + environment + \"\\r\\n\\tPath: \" + path);\r\n                            return [4 /*yield*/, fetchBlobAsJson(path, subdomain, THEME_FILE)];\r\n                        case 1:\r\n                            themeJson = _a.sent();\r\n                            return [4 /*yield*/, fetchBlobAsJson(path, subdomain, LAYOUT_FILE)];\r\n                        case 2:\r\n                            layoutJson = _a.sent();\r\n                            if (themeJson && !themeJson.isError) {\r\n                                subdomainTheme = buildTheme(themeJson);\r\n                                setTheme(subdomainTheme);\r\n                                setThemeJson(themeJson);\r\n                            }\r\n                            if (layoutJson && !layoutJson.isError) {\r\n                                setCustomizations(layoutJson);\r\n                            }\r\n                            if (!themeJson || !layoutJson || themeJson.isError || layoutJson.isError) {\r\n                                console.error(\"Failed to load theme or layout.\", themeJson === null || themeJson === void 0 ? void 0 : themeJson.message, layoutJson === null || layoutJson === void 0 ? void 0 : layoutJson.message);\r\n                                setThemeError(layoutJson === null || layoutJson === void 0 ? void 0 : layoutJson.message);\r\n                                //TODO: surface the error to the user\r\n                            }\r\n                            else {\r\n                                setInitialized(true);\r\n                            }\r\n                            return [2 /*return*/];\r\n                    }\r\n                });\r\n            });\r\n        }\r\n        initialize();\r\n    }, [path, subdomain, environment, client]);\r\n    //The context value\r\n    var theContext = {\r\n        isInitialized: isInitialized,\r\n        environment: environment,\r\n        client: client,\r\n        subdomain: subdomain,\r\n        customizations: customizations,\r\n        isIframe: isIframe,\r\n        blobUrl: function (filename) { return blobUrl(path, subdomain, filename); },\r\n        blobSubdomainUrl: function (filename) { return blobSubdomainUrl(path, subdomain, filename, environment); },\r\n        blobRootUrl: function (filename) { return blobUrl(path, \"\", filename); },\r\n        fetchFileAsJson: function (filename) { return fetchBlobAsJson(path, subdomain, filename); }, //, environment),\r\n    };\r\n    if (!isInitialized || !customizations || !theme) {\r\n        if (themeError) {\r\n            return (_jsx(Grid, __assign({ container: true, direction: \"column\", alignItems: \"center\", style: { marginTop: \"10%\" } }, { children: _jsx(ErrorCard, { message: \"The system failed to load the theme for the current client and subdomain\", details: themeError }, void 0) }), void 0));\r\n        }\r\n        else {\r\n            return _jsx(LoadingIndicator, {}, void 0);\r\n        }\r\n    }\r\n    else {\r\n        var fontIndex_1 = 0;\r\n        var externalLinkIndex_1 = 0;\r\n        return (_jsxs(_Fragment, { children: [_jsxs(Helmet, { children: [(_b = themeJson === null || themeJson === void 0 ? void 0 : themeJson.fonts) === null || _b === void 0 ? void 0 : _b.map(function (font) { return _jsx(\"style\", __assign({ type: \"text/css\" }, { children: \"@import url(\" + font + \");\" }), fontIndex_1++); }), (_c = themeJson === null || themeJson === void 0 ? void 0 : themeJson.externalLinks) === null || _c === void 0 ? void 0 : _c.map(function (theLink) { return _jsx(\"link\", { rel: theLink.rel, href: theLink.href }, externalLinkIndex_1++); })] }, void 0), _jsx(CustomizationsContext.Provider, __assign({ value: theContext }, { children: _jsx(ThemeProvider, __assign({ theme: theme }, { children: children }), void 0) }), void 0)] }, void 0));\r\n    }\r\n};\r\n","var __extends = (this && this.__extends) || (function () {\r\n    var extendStatics = function (d, b) {\r\n        extendStatics = Object.setPrototypeOf ||\r\n            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n            function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n        return extendStatics(d, b);\r\n    };\r\n    return function (d, b) {\r\n        if (typeof b !== \"function\" && b !== null)\r\n            throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n        extendStatics(d, b);\r\n        function __() { this.constructor = d; }\r\n        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n    };\r\n})();\r\nimport { jsx as _jsx } from \"react/jsx-runtime\";\r\nimport React from \"react\";\r\nimport ErrorCard from \"./error-card\";\r\nvar ErrorBoundary = /** @class */ (function (_super) {\r\n    __extends(ErrorBoundary, _super);\r\n    function ErrorBoundary(props) {\r\n        var _this = _super.call(this, props) || this;\r\n        _this.state = { hasError: false, error: null };\r\n        return _this;\r\n    }\r\n    ErrorBoundary.getDerivedStateFromError = function (error) {\r\n        return { hasError: true, error: error };\r\n    };\r\n    ErrorBoundary.prototype.componentDidCatch = function (error, errorInfo) {\r\n        console.log(error, errorInfo);\r\n    };\r\n    ErrorBoundary.prototype.render = function () {\r\n        var _a;\r\n        if (this.state.hasError) {\r\n            return _jsx(ErrorCard, { message: \"We're sorry, you've encountered an unexpected error.  We apologize for the inconvenience.  You can try refreshing the page, or clicking the back button to recover.\", details: (_a = this.state.error) === null || _a === void 0 ? void 0 : _a.message }, void 0);\r\n        }\r\n        return this.props.children;\r\n    };\r\n    return ErrorBoundary;\r\n}(React.Component));\r\nexport default ErrorBoundary;\r\n","var __assign = (this && this.__assign) || function () {\r\n    __assign = Object.assign || function(t) {\r\n        for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n            s = arguments[i];\r\n            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))\r\n                t[p] = s[p];\r\n        }\r\n        return t;\r\n    };\r\n    return __assign.apply(this, arguments);\r\n};\r\nimport { useContext } from \"react\";\r\nimport { CustomizationsContext } from \"./customizations-provider\";\r\n//===\r\n// Hook to get quick access to the customizations in the context\r\nexport function useCustomizations() {\r\n    var context = useContext(CustomizationsContext);\r\n    var customizations = __assign(__assign({}, context.customizations), { environment: context.environment, client: context.client, subdomain: context.subdomain, isIframe: context.isIframe, blobUrl: context.blobUrl, blobRootUrl: context.blobRootUrl, blobSubdomainUrl: context.blobSubdomainUrl, fetchFileAsJson: context.fetchFileAsJson });\r\n    return customizations;\r\n}\r\n","export default function warn(s) {\n  console.warn('[react-ga]', s);\n}","function _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\nfunction ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }\n\nfunction _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }\n\nfunction _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; }\n\nfunction _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function\"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }\n\nfunction _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }\n\nfunction _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }\n\nfunction _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === \"object\" || typeof call === \"function\")) { return call; } return _assertThisInitialized(self); }\n\nfunction _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return self; }\n\nfunction _isNativeReflectConstruct() { if (typeof Reflect === \"undefined\" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === \"function\") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }\n\nfunction _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }\n\nfunction _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }\n\nimport React, { Component } from 'react';\nimport PropTypes from 'prop-types';\nimport warn from '../utils/console/warn';\nvar NEWTAB = '_blank';\nvar MIDDLECLICK = 1;\n\nvar OutboundLink = /*#__PURE__*/function (_Component) {\n  _inherits(OutboundLink, _Component);\n\n  var _super = _createSuper(OutboundLink);\n\n  function OutboundLink() {\n    var _this;\n\n    _classCallCheck(this, OutboundLink);\n\n    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n      args[_key] = arguments[_key];\n    }\n\n    _this = _super.call.apply(_super, [this].concat(args));\n\n    _defineProperty(_assertThisInitialized(_this), \"handleClick\", function (event) {\n      var _this$props = _this.props,\n          target = _this$props.target,\n          eventLabel = _this$props.eventLabel,\n          to = _this$props.to,\n          onClick = _this$props.onClick,\n          trackerNames = _this$props.trackerNames;\n      var eventMeta = {\n        label: eventLabel\n      };\n      var sameTarget = target !== NEWTAB;\n      var normalClick = !(event.ctrlKey || event.shiftKey || event.metaKey || event.button === MIDDLECLICK);\n\n      if (sameTarget && normalClick) {\n        event.preventDefault();\n        OutboundLink.trackLink(eventMeta, function () {\n          window.location.href = to;\n        }, trackerNames);\n      } else {\n        OutboundLink.trackLink(eventMeta, function () {}, trackerNames);\n      }\n\n      if (onClick) {\n        onClick(event);\n      }\n    });\n\n    return _this;\n  }\n\n  _createClass(OutboundLink, [{\n    key: \"render\",\n    value: function render() {\n      var _this$props2 = this.props,\n          href = _this$props2.to,\n          target = _this$props2.target,\n          oldProps = _objectWithoutProperties(_this$props2, [\"to\", \"target\"]);\n\n      var props = _objectSpread(_objectSpread({}, oldProps), {}, {\n        target: target,\n        href: href,\n        onClick: this.handleClick\n      });\n\n      if (target === NEWTAB) {\n        props.rel = \"\".concat(props.rel ? props.rel : '', \" noopener noreferrer\").trim();\n      }\n\n      delete props.eventLabel;\n      delete props.trackerNames;\n      return /*#__PURE__*/React.createElement('a', props);\n    }\n  }]);\n\n  return OutboundLink;\n}(Component);\n\n_defineProperty(OutboundLink, \"trackLink\", function () {\n  warn('ga tracking not enabled');\n});\n\nexport { OutboundLink as default };\nOutboundLink.propTypes = {\n  eventLabel: PropTypes.string.isRequired,\n  target: PropTypes.string,\n  to: PropTypes.string,\n  onClick: PropTypes.func,\n  trackerNames: PropTypes.arrayOf(PropTypes.string)\n};\nOutboundLink.defaultProps = {\n  target: null,\n  to: null,\n  onClick: null,\n  trackerNames: null\n};","import warn from './console/warn';\nimport mightBeEmail from './mightBeEmail';\nvar redacted = 'REDACTED (Potential Email Address)';\nexport default function redactEmail(string) {\n  if (mightBeEmail(string)) {\n    warn('This arg looks like an email address, redacting.');\n    return redacted;\n  }\n\n  return string;\n}","// See if s could be an email address. We don't want to send personal data like email.\n// https://support.google.com/analytics/answer/2795983?hl=en\nexport default function mightBeEmail(s) {\n  // There's no point trying to validate rfc822 fully, just look for ...@...\n  return typeof s === 'string' && s.indexOf('@') !== -1;\n}","// GA strings need to have leading/trailing whitespace trimmed, and not all\n// browsers have String.prototoype.trim().\nexport default function trim(s) {\n  return s && s.toString().replace(/^\\s+|\\s+$/g, '');\n}","/**\n * To Title Case 2.1 - http://individed.com/code/to-title-case/\n * Copyright 2008-2013 David Gouch. Licensed under the MIT License.\n * https://github.com/gouch/to-title-case\n */\nimport trim from './trim';\nvar smallWords = /^(a|an|and|as|at|but|by|en|for|if|in|nor|of|on|or|per|the|to|vs?\\.?|via)$/i; // test\n\nexport default function toTitleCase(string) {\n  return trim(string).replace(/[A-Za-z0-9\\u00C0-\\u00FF]+[^\\s-]*/g, function (match, index, title) {\n    if (index > 0 && index + match.length !== title.length && match.search(smallWords) > -1 && title.charAt(index - 2) !== ':' && (title.charAt(index + match.length) !== '-' || title.charAt(index - 1) === '-') && title.charAt(index - 1).search(/[^\\s-]/) < 0) {\n      return match.toLowerCase();\n    }\n\n    if (match.substr(1).search(/[A-Z]|\\../) > -1) {\n      return match;\n    }\n\n    return match.charAt(0).toUpperCase() + match.substr(1);\n  });\n}","var isLoaded = false;\nexport default function (options) {\n  if (isLoaded) return;\n  isLoaded = true;\n  var gaAddress = 'https://www.google-analytics.com/analytics.js';\n\n  if (options && options.gaAddress) {\n    gaAddress = options.gaAddress;\n  } else if (options && options.debug) {\n    gaAddress = 'https://www.google-analytics.com/analytics_debug.js';\n  }\n\n  var onerror = options && options.onerror; // https://developers.google.com/analytics/devguides/collection/analyticsjs/\n\n  /* eslint-disable */\n\n  (function (i, s, o, g, r, a, m) {\n    i['GoogleAnalyticsObject'] = r;\n    i[r] = i[r] || function () {\n      (i[r].q = i[r].q || []).push(arguments);\n    }, i[r].l = 1 * new Date();\n    a = s.createElement(o), m = s.getElementsByTagName(o)[0];\n    a.async = 1;\n    a.src = g;\n    a.onerror = onerror;\n    m.parentNode.insertBefore(a, m);\n  })(window, document, 'script', gaAddress, 'ga');\n  /* eslint-enable */\n\n}","export default function log(s) {\n  console.info('[react-ga]', s);\n}","export var gaCalls = [];\nexport default {\n  calls: gaCalls,\n  ga: function ga() {\n    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n      args[_key] = arguments[_key];\n    }\n\n    gaCalls.push([].concat(args));\n  },\n  resetCalls: function resetCalls() {\n    gaCalls.length = 0;\n  }\n};","function _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; }\n\nfunction _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }\n\nfunction ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }\n\nfunction _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }\n\nfunction _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }\n\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\nfunction _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }\n\nfunction _nonIterableSpread() { throw new TypeError(\"Invalid attempt to spread non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\"); }\n\nfunction _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === \"string\") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === \"Object\" && o.constructor) n = o.constructor.name; if (n === \"Map\" || n === \"Set\") return Array.from(o); if (n === \"Arguments\" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }\n\nfunction _iterableToArray(iter) { if (typeof Symbol !== \"undefined\" && Symbol.iterator in Object(iter)) return Array.from(iter); }\n\nfunction _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }\n\nfunction _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }\n\n/**\n * React Google Analytics Module\n *\n * @package react-ga\n * @author  Adam Lofting <adam@mozillafoundation.org>\n *          Atul Varma <atul@mozillafoundation.org>\n */\n\n/**\n * Utilities\n */\nimport format from './utils/format';\nimport removeLeadingSlash from './utils/removeLeadingSlash';\nimport trim from './utils/trim';\nimport loadGA from './utils/loadGA';\nimport warn from './utils/console/warn';\nimport log from './utils/console/log';\nimport TestModeAPI from './utils/testModeAPI';\n\nvar _isNotBrowser = typeof window === 'undefined' || typeof document === 'undefined';\n\nvar _debug = false;\nvar _titleCase = true;\nvar _testMode = false;\nvar _alwaysSendToDefaultTracker = true;\nvar _redactEmail = true;\n\nvar internalGa = function internalGa() {\n  var _window;\n\n  if (_testMode) return TestModeAPI.ga.apply(TestModeAPI, arguments);\n  if (_isNotBrowser) return false;\n  if (!window.ga) return warn('ReactGA.initialize must be called first or GoogleAnalytics should be loaded manually');\n  return (_window = window).ga.apply(_window, arguments);\n};\n\nfunction _format(s) {\n  return format(s, _titleCase, _redactEmail);\n}\n\nfunction _gaCommand(trackerNames) {\n  for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {\n    args[_key - 1] = arguments[_key];\n  }\n\n  var command = args[0];\n\n  if (typeof internalGa === 'function') {\n    if (typeof command !== 'string') {\n      warn('ga command must be a string');\n      return;\n    }\n\n    if (_alwaysSendToDefaultTracker || !Array.isArray(trackerNames)) internalGa.apply(void 0, args);\n\n    if (Array.isArray(trackerNames)) {\n      trackerNames.forEach(function (name) {\n        internalGa.apply(void 0, _toConsumableArray([\"\".concat(name, \".\").concat(command)].concat(args.slice(1))));\n      });\n    }\n  }\n}\n\nfunction _initialize(gaTrackingID, options) {\n  if (!gaTrackingID) {\n    warn('gaTrackingID is required in initialize()');\n    return;\n  }\n\n  if (options) {\n    if (options.debug && options.debug === true) {\n      _debug = true;\n    }\n\n    if (options.titleCase === false) {\n      _titleCase = false;\n    }\n\n    if (options.redactEmail === false) {\n      _redactEmail = false;\n    }\n\n    if (options.useExistingGa) {\n      return;\n    }\n  }\n\n  if (options && options.gaOptions) {\n    internalGa('create', gaTrackingID, options.gaOptions);\n  } else {\n    internalGa('create', gaTrackingID, 'auto');\n  }\n}\n\nexport function addTrackers(configsOrTrackingId, options) {\n  if (Array.isArray(configsOrTrackingId)) {\n    configsOrTrackingId.forEach(function (config) {\n      if (_typeof(config) !== 'object') {\n        warn('All configs must be an object');\n        return;\n      }\n\n      _initialize(config.trackingId, config);\n    });\n  } else {\n    _initialize(configsOrTrackingId, options);\n  }\n\n  return true;\n}\nexport function initialize(configsOrTrackingId, options) {\n  if (options && options.testMode === true) {\n    _testMode = true;\n  } else {\n    if (_isNotBrowser) {\n      return;\n    }\n\n    if (!options || options.standardImplementation !== true) loadGA(options);\n  }\n\n  _alwaysSendToDefaultTracker = options && typeof options.alwaysSendToDefaultTracker === 'boolean' ? options.alwaysSendToDefaultTracker : true;\n  addTrackers(configsOrTrackingId, options);\n}\n/**\n * ga:\n * Returns the original GA object.\n */\n\nexport function ga() {\n  for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n    args[_key2] = arguments[_key2];\n  }\n\n  if (args.length > 0) {\n    internalGa.apply(void 0, args);\n\n    if (_debug) {\n      log(\"called ga('arguments');\");\n      log(\"with arguments: \".concat(JSON.stringify(args)));\n    }\n  }\n\n  return window.ga;\n}\n/**\n * set:\n * GA tracker set method\n * @param {Object} fieldsObject - a field/value pair or a group of field/value pairs on the tracker\n * @param {Array} trackerNames - (optional) a list of extra trackers to run the command on\n */\n\nexport function set(fieldsObject, trackerNames) {\n  if (!fieldsObject) {\n    warn('`fieldsObject` is required in .set()');\n    return;\n  }\n\n  if (_typeof(fieldsObject) !== 'object') {\n    warn('Expected `fieldsObject` arg to be an Object');\n    return;\n  }\n\n  if (Object.keys(fieldsObject).length === 0) {\n    warn('empty `fieldsObject` given to .set()');\n  }\n\n  _gaCommand(trackerNames, 'set', fieldsObject);\n\n  if (_debug) {\n    log(\"called ga('set', fieldsObject);\");\n    log(\"with fieldsObject: \".concat(JSON.stringify(fieldsObject)));\n  }\n}\n/**\n * send:\n * Clone of the low level `ga.send` method\n * WARNING: No validations will be applied to this\n * @param  {Object} fieldObject - field object for tracking different analytics\n * @param  {Array} trackerNames - trackers to send the command to\n * @param {Array} trackerNames - (optional) a list of extra trackers to run the command on\n */\n\nexport function send(fieldObject, trackerNames) {\n  _gaCommand(trackerNames, 'send', fieldObject);\n\n  if (_debug) {\n    log(\"called ga('send', fieldObject);\");\n    log(\"with fieldObject: \".concat(JSON.stringify(fieldObject)));\n    log(\"with trackers: \".concat(JSON.stringify(trackerNames)));\n  }\n}\n/**\n * pageview:\n * Basic GA pageview tracking\n * @param  {String} path - the current page page e.g. '/about'\n * @param {Array} trackerNames - (optional) a list of extra trackers to run the command on\n * @param {String} title - (optional) the page title e. g. 'My Website'\n */\n\nexport function pageview(rawPath, trackerNames, title) {\n  if (!rawPath) {\n    warn('path is required in .pageview()');\n    return;\n  }\n\n  var path = trim(rawPath);\n\n  if (path === '') {\n    warn('path cannot be an empty string in .pageview()');\n    return;\n  }\n\n  var extraFields = {};\n\n  if (title) {\n    extraFields.title = title;\n  }\n\n  if (typeof ga === 'function') {\n    _gaCommand(trackerNames, 'send', _objectSpread({\n      hitType: 'pageview',\n      page: path\n    }, extraFields));\n\n    if (_debug) {\n      log(\"called ga('send', 'pageview', path);\");\n      var extraLog = '';\n\n      if (title) {\n        extraLog = \" and title: \".concat(title);\n      }\n\n      log(\"with path: \".concat(path).concat(extraLog));\n    }\n  }\n}\n/**\n * modalview:\n * a proxy to basic GA pageview tracking to consistently track\n * modal views that are an equivalent UX to a traditional pageview\n * @param  {String} modalName e.g. 'add-or-edit-club'\n * @param {Array} trackerNames - (optional) a list of extra trackers to run the command on\n */\n\nexport function modalview(rawModalName, trackerNames) {\n  if (!rawModalName) {\n    warn('modalName is required in .modalview(modalName)');\n    return;\n  }\n\n  var modalName = removeLeadingSlash(trim(rawModalName));\n\n  if (modalName === '') {\n    warn('modalName cannot be an empty string or a single / in .modalview()');\n    return;\n  }\n\n  if (typeof ga === 'function') {\n    var path = \"/modal/\".concat(modalName);\n\n    _gaCommand(trackerNames, 'send', 'pageview', path);\n\n    if (_debug) {\n      log(\"called ga('send', 'pageview', path);\");\n      log(\"with path: \".concat(path));\n    }\n  }\n}\n/**\n * timing:\n * GA timing\n * @param args.category {String} required\n * @param args.variable {String} required\n * @param args.value  {Int}  required\n * @param args.label  {String} required\n * @param {Array} trackerNames - (optional) a list of extra trackers to run the command on\n */\n\nexport function timing() {\n  var _ref = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},\n      category = _ref.category,\n      variable = _ref.variable,\n      value = _ref.value,\n      label = _ref.label;\n\n  var trackerNames = arguments.length > 1 ? arguments[1] : undefined;\n\n  if (typeof ga === 'function') {\n    if (!category || !variable || typeof value !== 'number') {\n      warn('args.category, args.variable ' + 'AND args.value are required in timing() ' + 'AND args.value has to be a number');\n      return;\n    } // Required Fields\n\n\n    var fieldObject = {\n      hitType: 'timing',\n      timingCategory: _format(category),\n      timingVar: _format(variable),\n      timingValue: value\n    };\n\n    if (label) {\n      fieldObject.timingLabel = _format(label);\n    }\n\n    send(fieldObject, trackerNames);\n  }\n}\n/**\n * event:\n * GA event tracking\n * @param args.category {String} required\n * @param args.action {String} required\n * @param args.label {String} optional\n * @param args.value {Int} optional\n * @param args.nonInteraction {boolean} optional\n * @param args.transport {string} optional\n * @param {{action: string, category: string}} trackerNames - (optional) a list of extra trackers to run the command on\n */\n\nexport function event() {\n  var _ref2 = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},\n      category = _ref2.category,\n      action = _ref2.action,\n      label = _ref2.label,\n      value = _ref2.value,\n      nonInteraction = _ref2.nonInteraction,\n      transport = _ref2.transport,\n      args = _objectWithoutProperties(_ref2, [\"category\", \"action\", \"label\", \"value\", \"nonInteraction\", \"transport\"]);\n\n  var trackerNames = arguments.length > 1 ? arguments[1] : undefined;\n\n  if (typeof ga === 'function') {\n    // Simple Validation\n    if (!category || !action) {\n      warn('args.category AND args.action are required in event()');\n      return;\n    } // Required Fields\n\n\n    var fieldObject = {\n      hitType: 'event',\n      eventCategory: _format(category),\n      eventAction: _format(action)\n    }; // Optional Fields\n\n    if (label) {\n      fieldObject.eventLabel = _format(label);\n    }\n\n    if (typeof value !== 'undefined') {\n      if (typeof value !== 'number') {\n        warn('Expected `args.value` arg to be a Number.');\n      } else {\n        fieldObject.eventValue = value;\n      }\n    }\n\n    if (typeof nonInteraction !== 'undefined') {\n      if (typeof nonInteraction !== 'boolean') {\n        warn('`args.nonInteraction` must be a boolean.');\n      } else {\n        fieldObject.nonInteraction = nonInteraction;\n      }\n    }\n\n    if (typeof transport !== 'undefined') {\n      if (typeof transport !== 'string') {\n        warn('`args.transport` must be a string.');\n      } else {\n        if (['beacon', 'xhr', 'image'].indexOf(transport) === -1) {\n          warn('`args.transport` must be either one of these values: `beacon`, `xhr` or `image`');\n        }\n\n        fieldObject.transport = transport;\n      }\n    }\n\n    Object.keys(args).filter(function (key) {\n      return key.substr(0, 'dimension'.length) === 'dimension';\n    }).forEach(function (key) {\n      fieldObject[key] = args[key];\n    });\n    Object.keys(args).filter(function (key) {\n      return key.substr(0, 'metric'.length) === 'metric';\n    }).forEach(function (key) {\n      fieldObject[key] = args[key];\n    }); // Send to GA\n\n    send(fieldObject, trackerNames);\n  }\n}\n/**\n * exception:\n * GA exception tracking\n * @param args.description {String} optional\n * @param args.fatal {boolean} optional\n * @param {Array} trackerNames - (optional) a list of extra trackers to run the command on\n */\n\nexport function exception(_ref3, trackerNames) {\n  var description = _ref3.description,\n      fatal = _ref3.fatal;\n\n  if (typeof ga === 'function') {\n    // Required Fields\n    var fieldObject = {\n      hitType: 'exception'\n    }; // Optional Fields\n\n    if (description) {\n      fieldObject.exDescription = _format(description);\n    }\n\n    if (typeof fatal !== 'undefined') {\n      if (typeof fatal !== 'boolean') {\n        warn('`args.fatal` must be a boolean.');\n      } else {\n        fieldObject.exFatal = fatal;\n      }\n    } // Send to GA\n\n\n    send(fieldObject, trackerNames);\n  }\n}\nexport var plugin = {\n  /**\n   * require:\n   * GA requires a plugin\n   * @param name {String} e.g. 'ecommerce' or 'myplugin'\n   * @param options {Object} optional e.g {path: '/log', debug: true}\n   * @param trackerName {String} optional e.g 'trackerName'\n   */\n  require: function require(rawName, options, trackerName) {\n    if (typeof ga === 'function') {\n      // Required Fields\n      if (!rawName) {\n        warn('`name` is required in .require()');\n        return;\n      }\n\n      var name = trim(rawName);\n\n      if (name === '') {\n        warn('`name` cannot be an empty string in .require()');\n        return;\n      }\n\n      var requireString = trackerName ? \"\".concat(trackerName, \".require\") : 'require'; // Optional Fields\n\n      if (options) {\n        if (_typeof(options) !== 'object') {\n          warn('Expected `options` arg to be an Object');\n          return;\n        }\n\n        if (Object.keys(options).length === 0) {\n          warn('Empty `options` given to .require()');\n        }\n\n        ga(requireString, name, options);\n\n        if (_debug) {\n          log(\"called ga('require', '\".concat(name, \"', \").concat(JSON.stringify(options)));\n        }\n      } else {\n        ga(requireString, name);\n\n        if (_debug) {\n          log(\"called ga('require', '\".concat(name, \"');\"));\n        }\n      }\n    }\n  },\n\n  /**\n   * execute:\n   * GA execute action for plugin\n   * Takes variable number of arguments\n   * @param pluginName {String} e.g. 'ecommerce' or 'myplugin'\n   * @param action {String} e.g. 'addItem' or 'myCustomAction'\n   * @param actionType {String} optional e.g. 'detail'\n   * @param payload {Object} optional e.g { id: '1x5e', name : 'My product to track' }\n   */\n  execute: function execute(pluginName, action) {\n    var payload;\n    var actionType;\n\n    for (var _len3 = arguments.length, args = new Array(_len3 > 2 ? _len3 - 2 : 0), _key3 = 2; _key3 < _len3; _key3++) {\n      args[_key3 - 2] = arguments[_key3];\n    }\n\n    if (args.length === 1) {\n      payload = args[0];\n    } else {\n      actionType = args[0];\n      payload = args[1];\n    }\n\n    if (typeof ga === 'function') {\n      if (typeof pluginName !== 'string') {\n        warn('Expected `pluginName` arg to be a String.');\n      } else if (typeof action !== 'string') {\n        warn('Expected `action` arg to be a String.');\n      } else {\n        var command = \"\".concat(pluginName, \":\").concat(action);\n        payload = payload || null;\n\n        if (actionType && payload) {\n          ga(command, actionType, payload);\n\n          if (_debug) {\n            log(\"called ga('\".concat(command, \"');\"));\n            log(\"actionType: \\\"\".concat(actionType, \"\\\" with payload: \").concat(JSON.stringify(payload)));\n          }\n        } else if (payload) {\n          ga(command, payload);\n\n          if (_debug) {\n            log(\"called ga('\".concat(command, \"');\"));\n            log(\"with payload: \".concat(JSON.stringify(payload)));\n          }\n        } else {\n          ga(command);\n\n          if (_debug) {\n            log(\"called ga('\".concat(command, \"');\"));\n          }\n        }\n      }\n    }\n  }\n};\n/**\n * outboundLink:\n * GA outboundLink tracking\n * @param args.label {String} e.g. url, or 'Create an Account'\n * @param {function} hitCallback - Called after processing a hit.\n */\n\nexport function outboundLink(args, hitCallback, trackerNames) {\n  if (typeof hitCallback !== 'function') {\n    warn('hitCallback function is required');\n    return;\n  }\n\n  if (typeof ga === 'function') {\n    // Simple Validation\n    if (!args || !args.label) {\n      warn('args.label is required in outboundLink()');\n      return;\n    } // Required Fields\n\n\n    var fieldObject = {\n      hitType: 'event',\n      eventCategory: 'Outbound',\n      eventAction: 'Click',\n      eventLabel: _format(args.label)\n    };\n    var safetyCallbackCalled = false;\n\n    var safetyCallback = function safetyCallback() {\n      // This prevents a delayed response from GA\n      // causing hitCallback from being fired twice\n      safetyCallbackCalled = true;\n      hitCallback();\n    }; // Using a timeout to ensure the execution of critical application code\n    // in the case when the GA server might be down\n    // or an ad blocker prevents sending the data\n    // register safety net timeout:\n\n\n    var t = setTimeout(safetyCallback, 250);\n\n    var clearableCallbackForGA = function clearableCallbackForGA() {\n      clearTimeout(t);\n\n      if (!safetyCallbackCalled) {\n        hitCallback();\n      }\n    };\n\n    fieldObject.hitCallback = clearableCallbackForGA; // Send to GA\n\n    send(fieldObject, trackerNames);\n  } else {\n    // if ga is not defined, return the callback so the application\n    // continues to work as expected\n    setTimeout(hitCallback, 0);\n  }\n}\nexport var testModeAPI = TestModeAPI;\nexport default {\n  initialize: initialize,\n  ga: ga,\n  set: set,\n  send: send,\n  pageview: pageview,\n  modalview: modalview,\n  timing: timing,\n  event: event,\n  exception: exception,\n  plugin: plugin,\n  outboundLink: outboundLink,\n  testModeAPI: TestModeAPI\n};","import redactEmail from './redactEmail';\nimport toTitleCase from './toTitleCase';\nexport default function format() {\n  var s = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '';\n  var titleCase = arguments.length > 1 ? arguments[1] : undefined;\n  var redactingEmail = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;\n\n  var _str = s || '';\n\n  if (titleCase) {\n    _str = toTitleCase(s);\n  }\n\n  if (redactingEmail) {\n    _str = redactEmail(_str);\n  }\n\n  return _str;\n}","export default function removeLeadingSlash(string) {\n  if (string.substring(0, 1) === '/') {\n    return string.substring(1);\n  }\n\n  return string;\n}","function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }\n\nfunction _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }\n\nfunction _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }\n\nimport UnboundOutboundLink from './components/OutboundLink';\nimport * as Defaults from './core';\nvar initialize = Defaults.initialize;\nexport { initialize };\nvar addTrackers = Defaults.addTrackers;\nexport { addTrackers };\nvar ga = Defaults.ga;\nexport { ga };\nvar set = Defaults.set;\nexport { set };\nvar send = Defaults.send;\nexport { send };\nvar pageview = Defaults.pageview;\nexport { pageview };\nvar modalview = Defaults.modalview;\nexport { modalview };\nvar timing = Defaults.timing;\nexport { timing };\nvar event = Defaults.event;\nexport { event };\nvar exception = Defaults.exception;\nexport { exception };\nvar plugin = Defaults.plugin;\nexport { plugin };\nvar outboundLink = Defaults.outboundLink;\nexport { outboundLink };\nvar testModeAPI = Defaults.testModeAPI;\nexport { testModeAPI };\nUnboundOutboundLink.origTrackLink = UnboundOutboundLink.trackLink;\nUnboundOutboundLink.trackLink = Defaults.outboundLink;\nexport var OutboundLink = UnboundOutboundLink;\nexport default _objectSpread(_objectSpread({}, Defaults), {}, {\n  OutboundLink: OutboundLink\n});","import ReactGA from 'react-ga';\r\n//Checks the url to determine if this is debug or not\r\nfunction getIsDebug() {\r\n    var search = new URLSearchParams(window.location.search);\r\n    var isDebug = search.has(\"debug\") ? search.get(\"debug\") : false;\r\n    return isDebug;\r\n}\r\n//Configuration for google analytics tracking.  Passed into CustomizationsProvider so it can be\r\n// merged with subdomain-specific tracking config.\r\nvar getGAConfig = function (subdomain, trackerId) {\r\n    var isDebug = getIsDebug();\r\n    return {\r\n        trackers: [\r\n            {\r\n                trackingId: trackerId,\r\n                gaOptions: {\r\n                    siteSpeedSampleRate: 100,\r\n                }\r\n            } //NOTE: a secondary, domain-specific tracker will be added by the customizations provider\r\n        ],\r\n        // fallbackSecondaryTracker: secondaryTrackerId ?? GA_TRACKER_SECONDARY,   //Secondary tracker, either passed in, or defaulted\r\n        options: {\r\n            debug: Boolean(isDebug),\r\n            titleCase: false,\r\n            alwaysSendToDefaultTracker: true\r\n        },\r\n        fields: {\r\n            campaignName: subdomain,\r\n            dimension1: subdomain,\r\n            // dimension2: sidIdParam\r\n        },\r\n        trackerNames: ['pstracker'],\r\n        pageViewPath: window.location.pathname + window.location.search,\r\n    };\r\n};\r\n//Initialize Google Analytics.\r\nexport var initializeAnalytics = function (subdomain, gaTrackerId, gaTrackerSecondaryId) {\r\n    if (gaTrackerSecondaryId === void 0) { gaTrackerSecondaryId = undefined; }\r\n    var gaConfig = getGAConfig(subdomain, gaTrackerId);\r\n    if (gaConfig) {\r\n        var trackers = gaConfig.trackers;\r\n        //Look for and add a secondary tracker, if possible\r\n        // const secondaryTracker = gaTrackerSecondaryId ?? gaConfig.fallbackSecondaryTracker;\r\n        if (gaTrackerSecondaryId) {\r\n            var trackerName = gaConfig.trackerNames ? gaConfig.trackerNames[0] : \"pstracker\";\r\n            trackers.push({ trackingId: gaTrackerSecondaryId, gaOptions: { siteSpeedSampleRate: 100, name: trackerName } });\r\n            console.log(\"Secondary Tracker set to: \" + gaTrackerSecondaryId);\r\n        }\r\n        else {\r\n            console.log(\"No secondary tracker. Not provided, and no fallbackSecondaryTracker prop in analyticsConfig.\");\r\n        }\r\n        ReactGA.initialize(trackers, gaConfig.options);\r\n        ReactGA.set(gaConfig.fields, gaConfig.trackerNames); //Add dimensions        \r\n        ReactGA.pageview(gaConfig.pageViewPath, gaConfig.trackerNames); //app page view\r\n    }\r\n};\r\n","import { jsx as _jsx, jsxs as _jsxs, Fragment as _Fragment } from \"react/jsx-runtime\";\r\nimport { useEffect } from \"react\";\r\nimport { CssBaseline } from \"@material-ui/core\";\r\nimport { Helmet } from \"react-helmet\";\r\nimport Favicon from \"react-favicon\";\r\nimport { useCustomizations } from \"./customization-hooks\";\r\nimport { initializeAnalytics } from \"./analytics-helpers\";\r\nvar CustomizationsHelmet = function (_a) {\r\n    var _b, _c;\r\n    var gaTrackerId = _a.gaTrackerId, gaTrackerSecondaryId = _a.gaTrackerSecondaryId;\r\n    var _d = useCustomizations(), strings = _d.strings, links = _d.links, images = _d.images, tracking = _d.tracking, blobUrl = _d.blobUrl, subdomain = _d.subdomain;\r\n    var favicon = (images === null || images === void 0 ? void 0 : images.favicon) ? blobUrl(images.favicon) : null;\r\n    ;\r\n    useEffect(function () {\r\n        if (subdomain && gaTrackerId) {\r\n            var secondary = (tracking === null || tracking === void 0 ? void 0 : tracking.gaUACode) || gaTrackerSecondaryId;\r\n            initializeAnalytics(subdomain, gaTrackerId, secondary);\r\n        }\r\n    }, [subdomain, tracking, gaTrackerId, gaTrackerSecondaryId]);\r\n    return (_jsxs(_Fragment, { children: [_jsxs(Helmet, { children: [_jsx(\"meta\", { charSet: \"utf-8\" }, void 0), _jsx(\"title\", { children: (_b = strings === null || strings === void 0 ? void 0 : strings.header) === null || _b === void 0 ? void 0 : _b.title }, void 0), _jsx(\"meta\", { name: \"description\", content: (_c = strings === null || strings === void 0 ? void 0 : strings.header) === null || _c === void 0 ? void 0 : _c.title }, void 0), _jsx(\"link\", { rel: \"canonical\", href: links === null || links === void 0 ? void 0 : links.homeUrl }, void 0), favicon && _jsx(\"link\", { rel: \"apple-touch-icon\", href: favicon }, void 0)] }, void 0), favicon && _jsx(Favicon, { url: favicon }, void 0), _jsx(CssBaseline, {}, void 0)] }, void 0));\r\n};\r\nexport default CustomizationsHelmet;\r\n","import { CustomizationsProvider } from \"./customizations-provider\";\r\nexport { CustomizationsContext } from \"./customizations-provider\";\r\nexport { default as ErrorCard } from \"./error-card\";\r\nexport { default as ErrorBoundary } from \"./error-boundary\";\r\nexport { useCustomizations } from \"./customization-hooks\";\r\nexport { default as CustomizationHelmet } from \"./customization-helmet\";\r\nexport { default as LoadingIndicator } from \"./loading-indicator\";\r\n//TODO: Ideally we don't expose these....\r\nexport { getBaseUrl } from \"./general-helpers\";\r\nexport { getSearchParam } from \"./general-helpers\";\r\nexport { fetchJsonFile } from \"./general-helpers\";\r\nexport { getClientFromUrl } from \"./general-helpers\";\r\nexport { getSubdomainFromUrl } from \"./general-helpers\";\r\nexport { getEnvironmentFromUrl } from \"./general-helpers\";\r\nexport default CustomizationsProvider;\r\n","import setPrototypeOf from \"./setPrototypeOf.js\";\nexport default function _inheritsLoose(subClass, superClass) {\n  subClass.prototype = Object.create(superClass.prototype);\n  subClass.prototype.constructor = subClass;\n  setPrototypeOf(subClass, superClass);\n}","import { Logger as t, LogLevel as e } from \"@firebase/logger\";\n\nimport { getUA as n, isMobileCordova as s, isReactNative as i, isElectron as r, isIE as o, isUWP as c, isBrowserExtension as a } from \"@firebase/util\";\n\nimport { XhrIo as u, EventType as h, ErrorCode as l, createWebChannelTransport as _, getStatEventTarget as f, WebChannel as d, Event as w, Stat as E } from \"@firebase/webchannel-wrapper\";\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ class T {\n    /**\n     * Constructs a DatabaseInfo using the provided host, databaseId and\n     * persistenceKey.\n     *\n     * @param databaseId - The database to use.\n     * @param persistenceKey - A unique identifier for this Firestore's local\n     * storage (used in conjunction with the databaseId).\n     * @param host - The Firestore backend host to connect to.\n     * @param ssl - Whether to use SSL when connecting.\n     * @param forceLongPolling - Whether to use the forceLongPolling option\n     * when using WebChannel as the network transport.\n     * @param autoDetectLongPolling - Whether to use the detectBufferingProxy\n     * option when using WebChannel as the network transport.\n     */\n    constructor(t, e, n, s, i, r) {\n        this.t = t, this.persistenceKey = e, this.host = n, this.ssl = s, this.forceLongPolling = i, \n        this.i = r;\n    }\n}\n\n/** The default database name for a project. */\n/** Represents the database ID a Firestore client is associated with. */\nclass I {\n    constructor(t, e) {\n        this.projectId = t, this.database = e || \"(default)\";\n    }\n    get o() {\n        return \"(default)\" === this.database;\n    }\n    isEqual(t) {\n        return t instanceof I && t.projectId === this.projectId && t.database === this.database;\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/** Converts a Base64 encoded string to a binary string. */\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nconst m = new t(\"@firebase/firestore\");\n\n// Helper methods are needed because variables can't be exported as read/write\nfunction A() {\n    return m.logLevel;\n}\n\n/**\n * Sets the verbosity of Cloud Firestore logs (debug, error, or silent).\n *\n * @param logLevel - The verbosity you set for activity and error logging. Can\n *   be any of the following values:\n *\n *   <ul>\n *     <li>`debug` for the most verbose logging level, primarily for\n *     debugging.</li>\n *     <li>`error` to log errors only.</li>\n *     <li><code>`silent` to turn off logging.</li>\n *   </ul>\n */ function R(t, ...n) {\n    if (m.logLevel <= e.DEBUG) {\n        const e = n.map(g);\n        m.debug(\"Firestore (8.2.6): \" + t, ...e);\n    }\n}\n\nfunction P(t, ...n) {\n    if (m.logLevel <= e.ERROR) {\n        const e = n.map(g);\n        m.error(\"Firestore (8.2.6): \" + t, ...e);\n    }\n}\n\nfunction y(t, ...n) {\n    if (m.logLevel <= e.WARN) {\n        const e = n.map(g);\n        m.warn(\"Firestore (8.2.6): \" + t, ...e);\n    }\n}\n\n/**\n * Converts an additional log parameter to a string representation.\n */ function g(t) {\n    if (\"string\" == typeof t) return t;\n    try {\n        return e = t, JSON.stringify(e);\n    } catch (e) {\n        // Converting to JSON failed, just log the object directly\n        return t;\n    }\n    /**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n    /** Formats an object as a JSON string, suitable for logging. */\n    var e;\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Unconditionally fails, throwing an Error with the given message.\n * Messages are stripped in production builds.\n *\n * Returns `never` and can be used in expressions:\n * @example\n * let futureVar = fail('not implemented yet');\n */ function V(t = \"Unexpected state\") {\n    // Log the failure in addition to throw an exception, just in case the\n    // exception is swallowed.\n    const e = \"FIRESTORE (8.2.6) INTERNAL ASSERTION FAILED: \" + t;\n    // NOTE: We don't use FirestoreError here because these are internal failures\n    // that cannot be handled by the user. (Also it would create a circular\n    // dependency between the error and assert modules which doesn't work.)\n    throw P(e), new Error(e);\n}\n\n/**\n * Fails if the given assertion condition is false, throwing an Error with the\n * given message if it did.\n *\n * Messages are stripped in production builds.\n */ function p(t, e) {\n    t || V();\n}\n\n/**\n * Casts `obj` to `T`. In non-production builds, verifies that `obj` is an\n * instance of `T` before casting.\n */ function b(t, \n// eslint-disable-next-line @typescript-eslint/no-explicit-any\ne) {\n    return t;\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Generates `nBytes` of random bytes.\n *\n * If `nBytes < 0` , an error will be thrown.\n */ function v(t) {\n    // Polyfills for IE and WebWorker by using `self` and `msCrypto` when `crypto` is not available.\n    const e = \n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    \"undefined\" != typeof self && (self.crypto || self.msCrypto), n = new Uint8Array(t);\n    if (e && \"function\" == typeof e.getRandomValues) e.getRandomValues(n); else \n    // Falls back to Math.random\n    for (let e = 0; e < t; e++) n[e] = Math.floor(256 * Math.random());\n    return n;\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ class S {\n    static u() {\n        // Alphanumeric characters\n        const t = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789\", e = Math.floor(256 / t.length) * t.length;\n        // The largest byte value that is a multiple of `char.length`.\n                let n = \"\";\n        for (;n.length < 20; ) {\n            const s = v(40);\n            for (let i = 0; i < s.length; ++i) \n            // Only accept values that are [0, maxMultiple), this ensures they can\n            // be evenly mapped to indices of `chars` via a modulo operation.\n            n.length < 20 && s[i] < e && (n += t.charAt(s[i] % t.length));\n        }\n        return n;\n    }\n}\n\nfunction D(t, e) {\n    return t < e ? -1 : t > e ? 1 : 0;\n}\n\n/** Helper to compare arrays using isEqual(). */ function C(t, e, n) {\n    return t.length === e.length && t.every(((t, s) => n(t, e[s])));\n}\n\n/**\n * Returns the immediate lexicographically-following string. This is useful to\n * construct an inclusive range for indexeddb iterators.\n */ function x(t) {\n    // Return the input string, with an additional NUL byte appended.\n    return t + \"\\0\";\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Immutable class that represents a \"proto\" byte string.\n *\n * Proto byte strings can either be Base64-encoded strings or Uint8Arrays when\n * sent on the wire. This class abstracts away this differentiation by holding\n * the proto byte string in a common class that must be converted into a string\n * before being sent as a proto.\n */ class N {\n    constructor(t) {\n        this.h = t;\n    }\n    static fromBase64String(t) {\n        const e = atob(t);\n        return new N(e);\n    }\n    static fromUint8Array(t) {\n        const e = \n        /**\n * Helper function to convert an Uint8array to a binary string.\n */\n        function(t) {\n            let e = \"\";\n            for (let n = 0; n < t.length; ++n) e += String.fromCharCode(t[n]);\n            return e;\n        }\n        /**\n * Helper function to convert a binary string to an Uint8Array.\n */ (t);\n        return new N(e);\n    }\n    toBase64() {\n        return t = this.h, btoa(t);\n        /** Converts a binary string to a Base64 encoded string. */\n        var t;\n        /** True if and only if the Base64 conversion functions are available. */    }\n    toUint8Array() {\n        return function(t) {\n            const e = new Uint8Array(t.length);\n            for (let n = 0; n < t.length; n++) e[n] = t.charCodeAt(n);\n            return e;\n        }\n        /**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ (this.h);\n    }\n    l() {\n        return 2 * this.h.length;\n    }\n    _(t) {\n        return D(this.h, t.h);\n    }\n    isEqual(t) {\n        return this.h === t.h;\n    }\n}\n\nN.T = new N(\"\");\n\nconst F = {\n    // Causes are copied from:\n    // https://github.com/grpc/grpc/blob/bceec94ea4fc5f0085d81235d8e1c06798dc341a/include/grpc%2B%2B/impl/codegen/status_code_enum.h\n    /** Not an error; returned on success. */\n    OK: \"ok\",\n    /** The operation was cancelled (typically by the caller). */\n    CANCELLED: \"cancelled\",\n    /** Unknown error or an error from a different error domain. */\n    UNKNOWN: \"unknown\",\n    /**\n     * Client specified an invalid argument. Note that this differs from\n     * FAILED_PRECONDITION. INVALID_ARGUMENT indicates arguments that are\n     * problematic regardless of the state of the system (e.g., a malformed file\n     * name).\n     */\n    INVALID_ARGUMENT: \"invalid-argument\",\n    /**\n     * Deadline expired before operation could complete. For operations that\n     * change the state of the system, this error may be returned even if the\n     * operation has completed successfully. For example, a successful response\n     * from a server could have been delayed long enough for the deadline to\n     * expire.\n     */\n    DEADLINE_EXCEEDED: \"deadline-exceeded\",\n    /** Some requested entity (e.g., file or directory) was not found. */\n    NOT_FOUND: \"not-found\",\n    /**\n     * Some entity that we attempted to create (e.g., file or directory) already\n     * exists.\n     */\n    ALREADY_EXISTS: \"already-exists\",\n    /**\n     * The caller does not have permission to execute the specified operation.\n     * PERMISSION_DENIED must not be used for rejections caused by exhausting\n     * some resource (use RESOURCE_EXHAUSTED instead for those errors).\n     * PERMISSION_DENIED must not be used if the caller can not be identified\n     * (use UNAUTHENTICATED instead for those errors).\n     */\n    PERMISSION_DENIED: \"permission-denied\",\n    /**\n     * The request does not have valid authentication credentials for the\n     * operation.\n     */\n    UNAUTHENTICATED: \"unauthenticated\",\n    /**\n     * Some resource has been exhausted, perhaps a per-user quota, or perhaps the\n     * entire file system is out of space.\n     */\n    RESOURCE_EXHAUSTED: \"resource-exhausted\",\n    /**\n     * Operation was rejected because the system is not in a state required for\n     * the operation's execution. For example, directory to be deleted may be\n     * non-empty, an rmdir operation is applied to a non-directory, etc.\n     *\n     * A litmus test that may help a service implementor in deciding\n     * between FAILED_PRECONDITION, ABORTED, and UNAVAILABLE:\n     *  (a) Use UNAVAILABLE if the client can retry just the failing call.\n     *  (b) Use ABORTED if the client should retry at a higher-level\n     *      (e.g., restarting a read-modify-write sequence).\n     *  (c) Use FAILED_PRECONDITION if the client should not retry until\n     *      the system state has been explicitly fixed. E.g., if an \"rmdir\"\n     *      fails because the directory is non-empty, FAILED_PRECONDITION\n     *      should be returned since the client should not retry unless\n     *      they have first fixed up the directory by deleting files from it.\n     *  (d) Use FAILED_PRECONDITION if the client performs conditional\n     *      REST Get/Update/Delete on a resource and the resource on the\n     *      server does not match the condition. E.g., conflicting\n     *      read-modify-write on the same resource.\n     */\n    FAILED_PRECONDITION: \"failed-precondition\",\n    /**\n     * The operation was aborted, typically due to a concurrency issue like\n     * sequencer check failures, transaction aborts, etc.\n     *\n     * See litmus test above for deciding between FAILED_PRECONDITION, ABORTED,\n     * and UNAVAILABLE.\n     */\n    ABORTED: \"aborted\",\n    /**\n     * Operation was attempted past the valid range. E.g., seeking or reading\n     * past end of file.\n     *\n     * Unlike INVALID_ARGUMENT, this error indicates a problem that may be fixed\n     * if the system state changes. For example, a 32-bit file system will\n     * generate INVALID_ARGUMENT if asked to read at an offset that is not in the\n     * range [0,2^32-1], but it will generate OUT_OF_RANGE if asked to read from\n     * an offset past the current file size.\n     *\n     * There is a fair bit of overlap between FAILED_PRECONDITION and\n     * OUT_OF_RANGE. We recommend using OUT_OF_RANGE (the more specific error)\n     * when it applies so that callers who are iterating through a space can\n     * easily look for an OUT_OF_RANGE error to detect when they are done.\n     */\n    OUT_OF_RANGE: \"out-of-range\",\n    /** Operation is not implemented or not supported/enabled in this service. */\n    UNIMPLEMENTED: \"unimplemented\",\n    /**\n     * Internal errors. Means some invariants expected by underlying System has\n     * been broken. If you see one of these errors, Something is very broken.\n     */\n    INTERNAL: \"internal\",\n    /**\n     * The service is currently unavailable. This is a most likely a transient\n     * condition and may be corrected by retrying with a backoff.\n     *\n     * See litmus test above for deciding between FAILED_PRECONDITION, ABORTED,\n     * and UNAVAILABLE.\n     */\n    UNAVAILABLE: \"unavailable\",\n    /** Unrecoverable data loss or corruption. */\n    DATA_LOSS: \"data-loss\"\n};\n\n/** An error returned by a Firestore operation. */ class O extends Error {\n    /** @hideconstructor */\n    constructor(t, e) {\n        super(e), this.code = t, this.message = e, this.name = \"FirebaseError\", \n        // HACK: We write a toString property directly because Error is not a real\n        // class and so inheritance does not work correctly. We could alternatively\n        // do the same \"back-door inheritance\" trick that FirebaseError does.\n        this.toString = () => `${this.name}: [code=${this.code}]: ${this.message}`;\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * An immutable object representing an array of bytes.\n */ class k {\n    /** @hideconstructor */\n    constructor(t) {\n        this.I = t;\n    }\n    /**\n     * Creates a new `Bytes` object from the given Base64 string, converting it to\n     * bytes.\n     *\n     * @param base64 - The Base64 string used to create the `Bytes` object.\n     */    static fromBase64String(t) {\n        try {\n            return new k(N.fromBase64String(t));\n        } catch (t) {\n            throw new O(F.INVALID_ARGUMENT, \"Failed to construct data from Base64 string: \" + t);\n        }\n    }\n    /**\n     * Creates a new `Bytes` object from the given Uint8Array.\n     *\n     * @param array - The Uint8Array used to create the `Bytes` object.\n     */    static fromUint8Array(t) {\n        return new k(N.fromUint8Array(t));\n    }\n    /**\n     * Returns the underlying bytes as a Base64-encoded string.\n     *\n     * @returns The Base64-encoded string created from the `Bytes` object.\n     */    toBase64() {\n        return this.I.toBase64();\n    }\n    /**\n     * Returns the underlying bytes in a new `Uint8Array`.\n     *\n     * @returns The Uint8Array created from the `Bytes` object.\n     */    toUint8Array() {\n        return this.I.toUint8Array();\n    }\n    /**\n     * Returns a string representation of the `Bytes` object.\n     *\n     * @returns A string representation of the `Bytes` object.\n     */    toString() {\n        return \"Bytes(base64: \" + this.toBase64() + \")\";\n    }\n    /**\n     * Returns true if this `Bytes` object is equal to the provided one.\n     *\n     * @param other - The `Bytes` object to compare against.\n     * @returns true if this `Bytes` object is equal to the provided one.\n     */    isEqual(t) {\n        return this.I.isEqual(t.I);\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Simple wrapper around a nullable UID. Mostly exists to make code more\n * readable.\n */ class M {\n    constructor(t) {\n        this.uid = t;\n    }\n    m() {\n        return null != this.uid;\n    }\n    /**\n     * Returns a key representing this user, suitable for inclusion in a\n     * dictionary.\n     */    A() {\n        return this.m() ? \"uid:\" + this.uid : \"anonymous-user\";\n    }\n    isEqual(t) {\n        return t.uid === this.uid;\n    }\n}\n\n/** A user with a null UID. */ M.UNAUTHENTICATED = new M(null), \n// TODO(mikelehen): Look into getting a proper uid-equivalent for\n// non-FirebaseAuth providers.\nM.R = new M(\"google-credentials-uid\"), M.P = new M(\"first-party-uid\");\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nclass L {\n    constructor(t, e) {\n        this.user = e, this.type = \"OAuth\", this.g = {}, \n        // Set the headers using Object Literal notation to avoid minification\n        this.g.Authorization = \"Bearer \" + t;\n    }\n}\n\n/** A CredentialsProvider that always yields an empty token. */ class $ {\n    constructor() {\n        /**\n         * Stores the listener registered with setChangeListener()\n         * This isn't actually necessary since the UID never changes, but we use this\n         * to verify the listen contract is adhered to in tests.\n         */\n        this.V = null;\n    }\n    getToken() {\n        return Promise.resolve(null);\n    }\n    p() {}\n    v(t) {\n        this.V = t, \n        // Fire with initial user.\n        t(M.UNAUTHENTICATED);\n    }\n    S() {\n        this.V = null;\n    }\n}\n\nclass B {\n    constructor(t) {\n        /**\n         * The auth token listener registered with FirebaseApp, retained here so we\n         * can unregister it.\n         */\n        this.D = null, \n        /** Tracks the current User. */\n        this.currentUser = M.UNAUTHENTICATED, this.C = !1, \n        /**\n         * Counter used to detect if the token changed while a getToken request was\n         * outstanding.\n         */\n        this.N = 0, \n        /** The listener registered with setChangeListener(). */\n        this.V = null, this.forceRefresh = !1, this.D = () => {\n            this.N++, this.currentUser = this.F(), this.C = !0, this.V && this.V(this.currentUser);\n        }, this.N = 0, this.auth = t.getImmediate({\n            optional: !0\n        }), this.auth ? this.auth.addAuthTokenListener(this.D) : (\n        // if auth is not available, invoke tokenListener once with null token\n        this.D(null), t.get().then((t => {\n            this.auth = t, this.D && \n            // tokenListener can be removed by removeChangeListener()\n            this.auth.addAuthTokenListener(this.D);\n        }), (() => {})));\n    }\n    getToken() {\n        // Take note of the current value of the tokenCounter so that this method\n        // can fail (with an ABORTED error) if there is a token change while the\n        // request is outstanding.\n        const t = this.N, e = this.forceRefresh;\n        return this.forceRefresh = !1, this.auth ? this.auth.getToken(e).then((e => \n        // Cancel the request since the token changed while the request was\n        // outstanding so the response is potentially for a previous user (which\n        // user, we can't be sure).\n        this.N !== t ? (R(\"FirebaseCredentialsProvider\", \"getToken aborted due to token change.\"), \n        this.getToken()) : e ? (p(\"string\" == typeof e.accessToken), new L(e.accessToken, this.currentUser)) : null)) : Promise.resolve(null);\n    }\n    p() {\n        this.forceRefresh = !0;\n    }\n    v(t) {\n        this.V = t, \n        // Fire the initial event\n        this.C && t(this.currentUser);\n    }\n    S() {\n        this.auth && this.auth.removeAuthTokenListener(this.D), this.D = null, this.V = null;\n    }\n    // Auth.getUid() can return null even with a user logged in. It is because\n    // getUid() is synchronous, but the auth code populating Uid is asynchronous.\n    // This method should only be called in the AuthTokenListener callback\n    // to guarantee to get the actual user.\n    F() {\n        const t = this.auth && this.auth.getUid();\n        return p(null === t || \"string\" == typeof t), new M(t);\n    }\n}\n\n/*\n * FirstPartyToken provides a fresh token each time its value\n * is requested, because if the token is too old, requests will be rejected.\n * Technically this may no longer be necessary since the SDK should gracefully\n * recover from unauthenticated errors (see b/33147818 for context), but it's\n * safer to keep the implementation as-is.\n */ class q {\n    constructor(t, e) {\n        this.O = t, this.k = e, this.type = \"FirstParty\", this.user = M.P;\n    }\n    get g() {\n        const t = {\n            \"X-Goog-AuthUser\": this.k\n        }, e = this.O.auth.getAuthHeaderValueForFirstParty([]);\n        // Use array notation to prevent minification\n                return e && (t.Authorization = e), t;\n    }\n}\n\n/*\n * Provides user credentials required for the Firestore JavaScript SDK\n * to authenticate the user, using technique that is only available\n * to applications hosted by Google.\n */ class U {\n    constructor(t, e) {\n        this.O = t, this.k = e;\n    }\n    getToken() {\n        return Promise.resolve(new q(this.O, this.k));\n    }\n    v(t) {\n        // Fire with initial uid.\n        t(M.P);\n    }\n    S() {}\n    p() {}\n}\n\n/**\n * Builds a CredentialsProvider depending on the type of\n * the credentials passed in.\n */\n/**\n * @license\n * Copyright 2018 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * `ListenSequence` is a monotonic sequence. It is initialized with a minimum value to\n * exceed. All subsequent calls to next will return increasing values. If provided with a\n * `SequenceNumberSyncer`, it will additionally bump its next value when told of a new value, as\n * well as write out sequence numbers that it produces via `next()`.\n */\nclass Q {\n    constructor(t, e) {\n        this.previousValue = t, e && (e.M = t => this.L(t), this.$ = t => e.B(t));\n    }\n    L(t) {\n        return this.previousValue = Math.max(t, this.previousValue), this.previousValue;\n    }\n    next() {\n        const t = ++this.previousValue;\n        return this.$ && this.$(t), t;\n    }\n}\n\nQ.q = -1;\n\n/**\n * A `Timestamp` represents a point in time independent of any time zone or\n * calendar, represented as seconds and fractions of seconds at nanosecond\n * resolution in UTC Epoch time.\n *\n * It is encoded using the Proleptic Gregorian Calendar which extends the\n * Gregorian calendar backwards to year one. It is encoded assuming all minutes\n * are 60 seconds long, i.e. leap seconds are \"smeared\" so that no leap second\n * table is needed for interpretation. Range is from 0001-01-01T00:00:00Z to\n * 9999-12-31T23:59:59.999999999Z.\n *\n * @see https://github.com/google/protobuf/blob/master/src/google/protobuf/timestamp.proto\n */\nclass K {\n    /**\n     * Creates a new timestamp.\n     *\n     * @param seconds - The number of seconds of UTC time since Unix epoch\n     *     1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to\n     *     9999-12-31T23:59:59Z inclusive.\n     * @param nanoseconds - The non-negative fractions of a second at nanosecond\n     *     resolution. Negative second values with fractions must still have\n     *     non-negative nanoseconds values that count forward in time. Must be\n     *     from 0 to 999,999,999 inclusive.\n     */\n    constructor(t, e) {\n        if (this.seconds = t, this.nanoseconds = e, e < 0) throw new O(F.INVALID_ARGUMENT, \"Timestamp nanoseconds out of range: \" + e);\n        if (e >= 1e9) throw new O(F.INVALID_ARGUMENT, \"Timestamp nanoseconds out of range: \" + e);\n        if (t < -62135596800) throw new O(F.INVALID_ARGUMENT, \"Timestamp seconds out of range: \" + t);\n        // This will break in the year 10,000.\n                if (t >= 253402300800) throw new O(F.INVALID_ARGUMENT, \"Timestamp seconds out of range: \" + t);\n    }\n    /**\n     * Creates a new timestamp with the current date, with millisecond precision.\n     *\n     * @returns a new timestamp representing the current date.\n     */    static now() {\n        return K.fromMillis(Date.now());\n    }\n    /**\n     * Creates a new timestamp from the given date.\n     *\n     * @param date - The date to initialize the `Timestamp` from.\n     * @returns A new `Timestamp` representing the same point in time as the given\n     *     date.\n     */    static fromDate(t) {\n        return K.fromMillis(t.getTime());\n    }\n    /**\n     * Creates a new timestamp from the given number of milliseconds.\n     *\n     * @param milliseconds - Number of milliseconds since Unix epoch\n     *     1970-01-01T00:00:00Z.\n     * @returns A new `Timestamp` representing the same point in time as the given\n     *     number of milliseconds.\n     */    static fromMillis(t) {\n        const e = Math.floor(t / 1e3);\n        return new K(e, 1e6 * (t - 1e3 * e));\n    }\n    /**\n     * Converts a `Timestamp` to a JavaScript `Date` object. This conversion causes\n     * a loss of precision since `Date` objects only support millisecond precision.\n     *\n     * @returns JavaScript `Date` object representing the same point in time as\n     *     this `Timestamp`, with millisecond precision.\n     */    toDate() {\n        return new Date(this.toMillis());\n    }\n    /**\n     * Converts a `Timestamp` to a numeric timestamp (in milliseconds since\n     * epoch). This operation causes a loss of precision.\n     *\n     * @returns The point in time corresponding to this timestamp, represented as\n     *     the number of milliseconds since Unix epoch 1970-01-01T00:00:00Z.\n     */    toMillis() {\n        return 1e3 * this.seconds + this.nanoseconds / 1e6;\n    }\n    U(t) {\n        return this.seconds === t.seconds ? D(this.nanoseconds, t.nanoseconds) : D(this.seconds, t.seconds);\n    }\n    /**\n     * Returns true if this `Timestamp` is equal to the provided one.\n     *\n     * @param other - The `Timestamp` to compare against.\n     * @returns true if this `Timestamp` is equal to the provided one.\n     */    isEqual(t) {\n        return t.seconds === this.seconds && t.nanoseconds === this.nanoseconds;\n    }\n    toString() {\n        return \"Timestamp(seconds=\" + this.seconds + \", nanoseconds=\" + this.nanoseconds + \")\";\n    }\n    toJSON() {\n        return {\n            seconds: this.seconds,\n            nanoseconds: this.nanoseconds\n        };\n    }\n    /**\n     * Converts this object to a primitive string, which allows Timestamp objects to be compared\n     * using the `>`, `<=`, `>=` and `>` operators.\n     */    valueOf() {\n        // This method returns a string of the form <seconds>.<nanoseconds> where <seconds> is\n        // translated to have a non-negative value and both <seconds> and <nanoseconds> are left-padded\n        // with zeroes to be a consistent length. Strings with this format then have a lexiographical\n        // ordering that matches the expected ordering. The <seconds> translation is done to avoid\n        // having a leading negative sign (i.e. a leading '-' character) in its string representation,\n        // which would affect its lexiographical ordering.\n        const t = this.seconds - -62135596800;\n        // Note: Up to 12 decimal digits are required to represent all valid 'seconds' values.\n                return String(t).padStart(12, \"0\") + \".\" + String(this.nanoseconds).padStart(9, \"0\");\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * A version of a document in Firestore. This corresponds to the version\n * timestamp, such as update_time or read_time.\n */ class W {\n    constructor(t) {\n        this.timestamp = t;\n    }\n    static K(t) {\n        return new W(t);\n    }\n    static min() {\n        return new W(new K(0, 0));\n    }\n    _(t) {\n        return this.timestamp.U(t.timestamp);\n    }\n    isEqual(t) {\n        return this.timestamp.isEqual(t.timestamp);\n    }\n    /** Returns a number representation of the version for use in spec tests. */    W() {\n        // Convert to microseconds.\n        return 1e6 * this.timestamp.seconds + this.timestamp.nanoseconds / 1e3;\n    }\n    toString() {\n        return \"SnapshotVersion(\" + this.timestamp.toString() + \")\";\n    }\n    j() {\n        return this.timestamp;\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Path represents an ordered sequence of string segments.\n */\nclass j {\n    constructor(t, e, n) {\n        void 0 === e ? e = 0 : e > t.length && V(), void 0 === n ? n = t.length - e : n > t.length - e && V(), \n        this.segments = t, this.offset = e, this.G = n;\n    }\n    get length() {\n        return this.G;\n    }\n    isEqual(t) {\n        return 0 === j.H(this, t);\n    }\n    child(t) {\n        const e = this.segments.slice(this.offset, this.limit());\n        return t instanceof j ? t.forEach((t => {\n            e.push(t);\n        })) : e.push(t), this.J(e);\n    }\n    /** The index of one past the last segment of the path. */    limit() {\n        return this.offset + this.length;\n    }\n    Y(t) {\n        return t = void 0 === t ? 1 : t, this.J(this.segments, this.offset + t, this.length - t);\n    }\n    X() {\n        return this.J(this.segments, this.offset, this.length - 1);\n    }\n    Z() {\n        return this.segments[this.offset];\n    }\n    tt() {\n        return this.get(this.length - 1);\n    }\n    get(t) {\n        return this.segments[this.offset + t];\n    }\n    et() {\n        return 0 === this.length;\n    }\n    nt(t) {\n        if (t.length < this.length) return !1;\n        for (let e = 0; e < this.length; e++) if (this.get(e) !== t.get(e)) return !1;\n        return !0;\n    }\n    st(t) {\n        if (this.length + 1 !== t.length) return !1;\n        for (let e = 0; e < this.length; e++) if (this.get(e) !== t.get(e)) return !1;\n        return !0;\n    }\n    forEach(t) {\n        for (let e = this.offset, n = this.limit(); e < n; e++) t(this.segments[e]);\n    }\n    it() {\n        return this.segments.slice(this.offset, this.limit());\n    }\n    static H(t, e) {\n        const n = Math.min(t.length, e.length);\n        for (let s = 0; s < n; s++) {\n            const n = t.get(s), i = e.get(s);\n            if (n < i) return -1;\n            if (n > i) return 1;\n        }\n        return t.length < e.length ? -1 : t.length > e.length ? 1 : 0;\n    }\n}\n\n/**\n * A slash-separated path for navigating resources (documents and collections)\n * within Firestore.\n */ class G extends j {\n    J(t, e, n) {\n        return new G(t, e, n);\n    }\n    rt() {\n        // NOTE: The client is ignorant of any path segments containing escape\n        // sequences (e.g. __id123__) and just passes them through raw (they exist\n        // for legacy reasons and should not be used frequently).\n        return this.it().join(\"/\");\n    }\n    toString() {\n        return this.rt();\n    }\n    /**\n     * Creates a resource path from the given slash-delimited string. If multiple\n     * arguments are provided, all components are combined. Leading and trailing\n     * slashes from all components are ignored.\n     */    static ot(...t) {\n        // NOTE: The client is ignorant of any path segments containing escape\n        // sequences (e.g. __id123__) and just passes them through raw (they exist\n        // for legacy reasons and should not be used frequently).\n        const e = [];\n        for (const n of t) {\n            if (n.indexOf(\"//\") >= 0) throw new O(F.INVALID_ARGUMENT, `Invalid segment (${n}). Paths must not contain // in them.`);\n            // Strip leading and traling slashed.\n                        e.push(...n.split(\"/\").filter((t => t.length > 0)));\n        }\n        return new G(e);\n    }\n    static ct() {\n        return new G([]);\n    }\n}\n\nconst z = /^[_a-zA-Z][_a-zA-Z0-9]*$/;\n\n/** A dot-separated path for navigating sub-objects within a document. */ class H extends j {\n    J(t, e, n) {\n        return new H(t, e, n);\n    }\n    /**\n     * Returns true if the string could be used as a segment in a field path\n     * without escaping.\n     */    static at(t) {\n        return z.test(t);\n    }\n    rt() {\n        return this.it().map((t => (t = t.replace(/\\\\/g, \"\\\\\\\\\").replace(/`/g, \"\\\\`\"), H.at(t) || (t = \"`\" + t + \"`\"), \n        t))).join(\".\");\n    }\n    toString() {\n        return this.rt();\n    }\n    /**\n     * Returns true if this field references the key of a document.\n     */    ut() {\n        return 1 === this.length && \"__name__\" === this.get(0);\n    }\n    /**\n     * The field designating the key of a document.\n     */    static ht() {\n        return new H([ \"__name__\" ]);\n    }\n    /**\n     * Parses a field string from the given server-formatted string.\n     *\n     * - Splitting the empty string is not allowed (for now at least).\n     * - Empty segments within the string (e.g. if there are two consecutive\n     *   separators) are not allowed.\n     *\n     * TODO(b/37244157): we should make this more strict. Right now, it allows\n     * non-identifier path components, even if they aren't escaped.\n     */    static lt(t) {\n        const e = [];\n        let n = \"\", s = 0;\n        const i = () => {\n            if (0 === n.length) throw new O(F.INVALID_ARGUMENT, `Invalid field path (${t}). Paths must not be empty, begin with '.', end with '.', or contain '..'`);\n            e.push(n), n = \"\";\n        };\n        let r = !1;\n        for (;s < t.length; ) {\n            const e = t[s];\n            if (\"\\\\\" === e) {\n                if (s + 1 === t.length) throw new O(F.INVALID_ARGUMENT, \"Path has trailing escape character: \" + t);\n                const e = t[s + 1];\n                if (\"\\\\\" !== e && \".\" !== e && \"`\" !== e) throw new O(F.INVALID_ARGUMENT, \"Path has invalid escape sequence: \" + t);\n                n += e, s += 2;\n            } else \"`\" === e ? (r = !r, s++) : \".\" !== e || r ? (n += e, s++) : (i(), s++);\n        }\n        if (i(), r) throw new O(F.INVALID_ARGUMENT, \"Unterminated ` in path: \" + t);\n        return new H(e);\n    }\n    static ct() {\n        return new H([]);\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ class J {\n    constructor(t) {\n        this.path = t;\n    }\n    static _t(t) {\n        return new J(G.ot(t));\n    }\n    static ft(t) {\n        return new J(G.ot(t).Y(5));\n    }\n    /** Returns true if the document is in the specified collectionId. */    dt(t) {\n        return this.path.length >= 2 && this.path.get(this.path.length - 2) === t;\n    }\n    isEqual(t) {\n        return null !== t && 0 === G.H(this.path, t.path);\n    }\n    toString() {\n        return this.path.toString();\n    }\n    static H(t, e) {\n        return G.H(t.path, e.path);\n    }\n    static wt(t) {\n        return t.length % 2 == 0;\n    }\n    /**\n     * Creates and returns a new document key with the given segments.\n     *\n     * @param segments - The segments of the path to the document\n     * @returns A new instance of DocumentKey\n     */    static Et(t) {\n        return new J(new G(t.slice()));\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ function Y(t) {\n    let e = 0;\n    for (const n in t) Object.prototype.hasOwnProperty.call(t, n) && e++;\n    return e;\n}\n\nfunction X(t, e) {\n    for (const n in t) Object.prototype.hasOwnProperty.call(t, n) && e(n, t[n]);\n}\n\nfunction Z(t) {\n    for (const e in t) if (Object.prototype.hasOwnProperty.call(t, e)) return !1;\n    return !0;\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Provides a set of fields that can be used to partially patch a document.\n * FieldMask is used in conjunction with ObjectValue.\n * Examples:\n *   foo - Overwrites foo entirely with the provided value. If foo is not\n *         present in the companion ObjectValue, the field is deleted.\n *   foo.bar - Overwrites only the field bar of the object foo.\n *             If foo is not an object, foo is replaced with an object\n *             containing foo\n */ class tt {\n    constructor(t) {\n        this.fields = t, \n        // TODO(dimond): validation of FieldMask\n        // Sort the field mask to support `FieldMask.isEqual()` and assert below.\n        t.sort(H.H);\n    }\n    /**\n     * Verifies that `fieldPath` is included by at least one field in this field\n     * mask.\n     *\n     * This is an O(n) operation, where `n` is the size of the field mask.\n     */    Tt(t) {\n        for (const e of this.fields) if (e.nt(t)) return !0;\n        return !1;\n    }\n    isEqual(t) {\n        return C(this.fields, t.fields, ((t, e) => t.isEqual(e)));\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n// A RegExp matching ISO 8601 UTC timestamps with optional fraction.\nconst et = new RegExp(/^\\d{4}-\\d\\d-\\d\\dT\\d\\d:\\d\\d:\\d\\d(?:\\.(\\d+))?Z$/);\n\n/**\n * Converts the possible Proto values for a timestamp value into a \"seconds and\n * nanos\" representation.\n */ function nt(t) {\n    // The json interface (for the browser) will return an iso timestamp string,\n    // while the proto js library (for node) will return a\n    // google.protobuf.Timestamp instance.\n    if (p(!!t), \"string\" == typeof t) {\n        // The date string can have higher precision (nanos) than the Date class\n        // (millis), so we do some custom parsing here.\n        // Parse the nanos right out of the string.\n        let e = 0;\n        const n = et.exec(t);\n        if (p(!!n), n[1]) {\n            // Pad the fraction out to 9 digits (nanos).\n            let t = n[1];\n            t = (t + \"000000000\").substr(0, 9), e = Number(t);\n        }\n        // Parse the date to get the seconds.\n                const s = new Date(t);\n        return {\n            seconds: Math.floor(s.getTime() / 1e3),\n            nanos: e\n        };\n    }\n    return {\n        seconds: st(t.seconds),\n        nanos: st(t.nanos)\n    };\n}\n\n/**\n * Converts the possible Proto types for numbers into a JavaScript number.\n * Returns 0 if the value is not numeric.\n */ function st(t) {\n    // TODO(bjornick): Handle int64 greater than 53 bits.\n    return \"number\" == typeof t ? t : \"string\" == typeof t ? Number(t) : 0;\n}\n\n/** Converts the possible Proto types for Blobs into a ByteString. */ function it(t) {\n    return \"string\" == typeof t ? N.fromBase64String(t) : N.fromUint8Array(t);\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Represents a locally-applied ServerTimestamp.\n *\n * Server Timestamps are backed by MapValues that contain an internal field\n * `__type__` with a value of `server_timestamp`. The previous value and local\n * write time are stored in its `__previous_value__` and `__local_write_time__`\n * fields respectively.\n *\n * Notes:\n * - ServerTimestampValue instances are created as the result of applying a\n *   transform. They can only exist in the local view of a document. Therefore\n *   they do not need to be parsed or serialized.\n * - When evaluated locally (e.g. for snapshot.data()), they by default\n *   evaluate to `null`. This behavior can be configured by passing custom\n *   FieldValueOptions to value().\n * - With respect to other ServerTimestampValues, they sort by their\n *   localWriteTime.\n */ function rt(t) {\n    var e, n;\n    return \"server_timestamp\" === (null === (n = ((null === (e = null == t ? void 0 : t.mapValue) || void 0 === e ? void 0 : e.fields) || {}).__type__) || void 0 === n ? void 0 : n.stringValue);\n}\n\n/**\n * Creates a new ServerTimestamp proto value (using the internal format).\n */\n/**\n * Returns the value of the field before this ServerTimestamp was set.\n *\n * Preserving the previous values allows the user to display the last resoled\n * value until the backend responds with the timestamp.\n */\nfunction ot(t) {\n    const e = t.mapValue.fields.__previous_value__;\n    return rt(e) ? ot(e) : e;\n}\n\n/**\n * Returns the local time at which this timestamp was first set.\n */ function ct(t) {\n    const e = nt(t.mapValue.fields.__local_write_time__.timestampValue);\n    return new K(e.seconds, e.nanos);\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/** Sentinel value that sorts before any Mutation Batch ID. */\n/**\n * Returns whether a variable is either undefined or null.\n */\nfunction at(t) {\n    return null == t;\n}\n\n/** Returns whether the value represents -0. */ function ut(t) {\n    // Detect if the value is -0.0. Based on polyfill from\n    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is\n    return 0 === t && 1 / t == -1 / 0;\n}\n\n/**\n * Returns whether a value is an integer and in the safe integer range\n * @param value - The value to test for being an integer and in the safe range\n */ function ht(t) {\n    return \"number\" == typeof t && Number.isInteger(t) && !ut(t) && t <= Number.MAX_SAFE_INTEGER && t >= Number.MIN_SAFE_INTEGER;\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/** Extracts the backend's type order for the provided value. */ function lt(t) {\n    return \"nullValue\" in t ? 0 /* NullValue */ : \"booleanValue\" in t ? 1 /* BooleanValue */ : \"integerValue\" in t || \"doubleValue\" in t ? 2 /* NumberValue */ : \"timestampValue\" in t ? 3 /* TimestampValue */ : \"stringValue\" in t ? 5 /* StringValue */ : \"bytesValue\" in t ? 6 /* BlobValue */ : \"referenceValue\" in t ? 7 /* RefValue */ : \"geoPointValue\" in t ? 8 /* GeoPointValue */ : \"arrayValue\" in t ? 9 /* ArrayValue */ : \"mapValue\" in t ? rt(t) ? 4 /* ServerTimestampValue */ : 10 /* ObjectValue */ : V();\n}\n\n/** Tests `left` and `right` for equality based on the backend semantics. */ function _t(t, e) {\n    const n = lt(t);\n    if (n !== lt(e)) return !1;\n    switch (n) {\n      case 0 /* NullValue */ :\n        return !0;\n\n      case 1 /* BooleanValue */ :\n        return t.booleanValue === e.booleanValue;\n\n      case 4 /* ServerTimestampValue */ :\n        return ct(t).isEqual(ct(e));\n\n      case 3 /* TimestampValue */ :\n        return function(t, e) {\n            if (\"string\" == typeof t.timestampValue && \"string\" == typeof e.timestampValue && t.timestampValue.length === e.timestampValue.length) \n            // Use string equality for ISO 8601 timestamps\n            return t.timestampValue === e.timestampValue;\n            const n = nt(t.timestampValue), s = nt(e.timestampValue);\n            return n.seconds === s.seconds && n.nanos === s.nanos;\n        }(t, e);\n\n      case 5 /* StringValue */ :\n        return t.stringValue === e.stringValue;\n\n      case 6 /* BlobValue */ :\n        return function(t, e) {\n            return it(t.bytesValue).isEqual(it(e.bytesValue));\n        }(t, e);\n\n      case 7 /* RefValue */ :\n        return t.referenceValue === e.referenceValue;\n\n      case 8 /* GeoPointValue */ :\n        return function(t, e) {\n            return st(t.geoPointValue.latitude) === st(e.geoPointValue.latitude) && st(t.geoPointValue.longitude) === st(e.geoPointValue.longitude);\n        }(t, e);\n\n      case 2 /* NumberValue */ :\n        return function(t, e) {\n            if (\"integerValue\" in t && \"integerValue\" in e) return st(t.integerValue) === st(e.integerValue);\n            if (\"doubleValue\" in t && \"doubleValue\" in e) {\n                const n = st(t.doubleValue), s = st(e.doubleValue);\n                return n === s ? ut(n) === ut(s) : isNaN(n) && isNaN(s);\n            }\n            return !1;\n        }(t, e);\n\n      case 9 /* ArrayValue */ :\n        return C(t.arrayValue.values || [], e.arrayValue.values || [], _t);\n\n      case 10 /* ObjectValue */ :\n        return function(t, e) {\n            const n = t.mapValue.fields || {}, s = e.mapValue.fields || {};\n            if (Y(n) !== Y(s)) return !1;\n            for (const t in n) if (n.hasOwnProperty(t) && (void 0 === s[t] || !_t(n[t], s[t]))) return !1;\n            return !0;\n        }\n        /** Returns true if the ArrayValue contains the specified element. */ (t, e);\n\n      default:\n        return V();\n    }\n}\n\nfunction ft(t, e) {\n    return void 0 !== (t.values || []).find((t => _t(t, e)));\n}\n\nfunction dt(t, e) {\n    const n = lt(t), s = lt(e);\n    if (n !== s) return D(n, s);\n    switch (n) {\n      case 0 /* NullValue */ :\n        return 0;\n\n      case 1 /* BooleanValue */ :\n        return D(t.booleanValue, e.booleanValue);\n\n      case 2 /* NumberValue */ :\n        return function(t, e) {\n            const n = st(t.integerValue || t.doubleValue), s = st(e.integerValue || e.doubleValue);\n            return n < s ? -1 : n > s ? 1 : n === s ? 0 : \n            // one or both are NaN.\n            isNaN(n) ? isNaN(s) ? 0 : -1 : 1;\n        }(t, e);\n\n      case 3 /* TimestampValue */ :\n        return wt(t.timestampValue, e.timestampValue);\n\n      case 4 /* ServerTimestampValue */ :\n        return wt(ct(t), ct(e));\n\n      case 5 /* StringValue */ :\n        return D(t.stringValue, e.stringValue);\n\n      case 6 /* BlobValue */ :\n        return function(t, e) {\n            const n = it(t), s = it(e);\n            return n._(s);\n        }(t.bytesValue, e.bytesValue);\n\n      case 7 /* RefValue */ :\n        return function(t, e) {\n            const n = t.split(\"/\"), s = e.split(\"/\");\n            for (let t = 0; t < n.length && t < s.length; t++) {\n                const e = D(n[t], s[t]);\n                if (0 !== e) return e;\n            }\n            return D(n.length, s.length);\n        }(t.referenceValue, e.referenceValue);\n\n      case 8 /* GeoPointValue */ :\n        return function(t, e) {\n            const n = D(st(t.latitude), st(e.latitude));\n            if (0 !== n) return n;\n            return D(st(t.longitude), st(e.longitude));\n        }(t.geoPointValue, e.geoPointValue);\n\n      case 9 /* ArrayValue */ :\n        return function(t, e) {\n            const n = t.values || [], s = e.values || [];\n            for (let t = 0; t < n.length && t < s.length; ++t) {\n                const e = dt(n[t], s[t]);\n                if (e) return e;\n            }\n            return D(n.length, s.length);\n        }(t.arrayValue, e.arrayValue);\n\n      case 10 /* ObjectValue */ :\n        return function(t, e) {\n            const n = t.fields || {}, s = Object.keys(n), i = e.fields || {}, r = Object.keys(i);\n            // Even though MapValues are likely sorted correctly based on their insertion\n            // order (e.g. when received from the backend), local modifications can bring\n            // elements out of order. We need to re-sort the elements to ensure that\n            // canonical IDs are independent of insertion order.\n            s.sort(), r.sort();\n            for (let t = 0; t < s.length && t < r.length; ++t) {\n                const e = D(s[t], r[t]);\n                if (0 !== e) return e;\n                const o = dt(n[s[t]], i[r[t]]);\n                if (0 !== o) return o;\n            }\n            return D(s.length, r.length);\n        }\n        /**\n * Generates the canonical ID for the provided field value (as used in Target\n * serialization).\n */ (t.mapValue, e.mapValue);\n\n      default:\n        throw V();\n    }\n}\n\nfunction wt(t, e) {\n    if (\"string\" == typeof t && \"string\" == typeof e && t.length === e.length) return D(t, e);\n    const n = nt(t), s = nt(e), i = D(n.seconds, s.seconds);\n    return 0 !== i ? i : D(n.nanos, s.nanos);\n}\n\nfunction Et(t) {\n    return Tt(t);\n}\n\nfunction Tt(t) {\n    return \"nullValue\" in t ? \"null\" : \"booleanValue\" in t ? \"\" + t.booleanValue : \"integerValue\" in t ? \"\" + t.integerValue : \"doubleValue\" in t ? \"\" + t.doubleValue : \"timestampValue\" in t ? function(t) {\n        const e = nt(t);\n        return `time(${e.seconds},${e.nanos})`;\n    }(t.timestampValue) : \"stringValue\" in t ? t.stringValue : \"bytesValue\" in t ? it(t.bytesValue).toBase64() : \"referenceValue\" in t ? (n = t.referenceValue, \n    J.ft(n).toString()) : \"geoPointValue\" in t ? `geo(${(e = t.geoPointValue).latitude},${e.longitude})` : \"arrayValue\" in t ? function(t) {\n        let e = \"[\", n = !0;\n        for (const s of t.values || []) n ? n = !1 : e += \",\", e += Tt(s);\n        return e + \"]\";\n    }\n    /** Returns a reference value for the provided database and key. */ (t.arrayValue) : \"mapValue\" in t ? function(t) {\n        // Iteration order in JavaScript is not guaranteed. To ensure that we generate\n        // matching canonical IDs for identical maps, we need to sort the keys.\n        const e = Object.keys(t.fields || {}).sort();\n        let n = \"{\", s = !0;\n        for (const i of e) s ? s = !1 : n += \",\", n += `${i}:${Tt(t.fields[i])}`;\n        return n + \"}\";\n    }(t.mapValue) : V();\n    var e, n;\n}\n\nfunction It(t, e) {\n    return {\n        referenceValue: `projects/${t.projectId}/databases/${t.database}/documents/${e.path.rt()}`\n    };\n}\n\n/** Returns true if `value` is an IntegerValue . */ function mt(t) {\n    return !!t && \"integerValue\" in t;\n}\n\n/** Returns true if `value` is a DoubleValue. */\n/** Returns true if `value` is an ArrayValue. */\nfunction At(t) {\n    return !!t && \"arrayValue\" in t;\n}\n\n/** Returns true if `value` is a NullValue. */ function Rt(t) {\n    return !!t && \"nullValue\" in t;\n}\n\n/** Returns true if `value` is NaN. */ function Pt(t) {\n    return !!t && \"doubleValue\" in t && isNaN(Number(t.doubleValue));\n}\n\n/** Returns true if `value` is a MapValue. */ function yt(t) {\n    return !!t && \"mapValue\" in t;\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * An ObjectValue represents a MapValue in the Firestore Proto and offers the\n * ability to add and remove fields (via the ObjectValueBuilder).\n */ class gt {\n    constructor(t) {\n        this.proto = t;\n    }\n    static empty() {\n        return new gt({\n            mapValue: {}\n        });\n    }\n    /**\n     * Returns the value at the given path or null.\n     *\n     * @param path - the path to search\n     * @returns The value at the path or if there it doesn't exist.\n     */    field(t) {\n        if (t.et()) return this.proto;\n        {\n            let e = this.proto;\n            for (let n = 0; n < t.length - 1; ++n) {\n                if (!e.mapValue.fields) return null;\n                if (e = e.mapValue.fields[t.get(n)], !yt(e)) return null;\n            }\n            return e = (e.mapValue.fields || {})[t.tt()], e || null;\n        }\n    }\n    isEqual(t) {\n        return _t(this.proto, t.proto);\n    }\n}\n\n/**\n * An ObjectValueBuilder provides APIs to set and delete fields from an\n * ObjectValue.\n */ class Vt {\n    /**\n     * @param baseObject - The object to mutate.\n     */\n    constructor(t = gt.empty()) {\n        this.It = t, \n        /** A map that contains the accumulated changes in this builder. */\n        this.At = new Map;\n    }\n    /**\n     * Sets the field to the provided value.\n     *\n     * @param path - The field path to set.\n     * @param value - The value to set.\n     * @returns The current Builder instance.\n     */    set(t, e) {\n        return this.Rt(t, e), this;\n    }\n    /**\n     * Removes the field at the specified path. If there is no field at the\n     * specified path, nothing is changed.\n     *\n     * @param path - The field path to remove.\n     * @returns The current Builder instance.\n     */    delete(t) {\n        return this.Rt(t, null), this;\n    }\n    /**\n     * Adds `value` to the overlay map at `path`. Creates nested map entries if\n     * needed.\n     */    Rt(t, e) {\n        let n = this.At;\n        for (let e = 0; e < t.length - 1; ++e) {\n            const s = t.get(e);\n            let i = n.get(s);\n            i instanceof Map ? \n            // Re-use a previously created map\n            n = i : i && 10 /* ObjectValue */ === lt(i) ? (\n            // Convert the existing Protobuf MapValue into a map\n            i = new Map(Object.entries(i.mapValue.fields || {})), n.set(s, i), n = i) : (\n            // Create an empty map to represent the current nesting level\n            i = new Map, n.set(s, i), n = i);\n        }\n        n.set(t.tt(), e);\n    }\n    /** Returns an ObjectValue with all mutations applied. */    Pt() {\n        const t = this.yt(H.ct(), this.At);\n        return null != t ? new gt(t) : this.It;\n    }\n    /**\n     * Applies any overlays from `currentOverlays` that exist at `currentPath`\n     * and returns the merged data at `currentPath` (or null if there were no\n     * changes).\n     *\n     * @param currentPath - The path at the current nesting level. Can be set to\n     * FieldValue.emptyPath() to represent the root.\n     * @param currentOverlays - The overlays at the current nesting level in the\n     * same format as `overlayMap`.\n     * @returns The merged data at `currentPath` or null if no modifications\n     * were applied.\n     */    yt(t, e) {\n        let n = !1;\n        const s = this.It.field(t), i = yt(s) ? // If there is already data at the current path, base our\n        Object.assign({}, s.mapValue.fields) : {};\n        return e.forEach(((e, s) => {\n            if (e instanceof Map) {\n                const r = this.yt(t.child(s), e);\n                null != r && (i[s] = r, n = !0);\n            } else null !== e ? (i[s] = e, n = !0) : i.hasOwnProperty(s) && (delete i[s], n = !0);\n        })), n ? {\n            mapValue: {\n                fields: i\n            }\n        } : null;\n    }\n}\n\n/**\n * Returns a FieldMask built from all fields in a MapValue.\n */ function pt(t) {\n    const e = [];\n    return X(t.fields || {}, ((t, n) => {\n        const s = new H([ t ]);\n        if (yt(n)) {\n            const t = pt(n.mapValue).fields;\n            if (0 === t.length) \n            // Preserve the empty map by adding it to the FieldMask.\n            e.push(s); else \n            // For nested and non-empty ObjectValues, add the FieldPath of the\n            // leaf nodes.\n            for (const n of t) e.push(s.child(n));\n        } else \n        // For nested and non-empty ObjectValues, add the FieldPath of the leaf\n        // nodes.\n        e.push(s);\n    })), new tt(e);\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * The result of a lookup for a given path may be an existing document or a\n * marker that this document does not exist at a given version.\n */ class bt {\n    constructor(t, e) {\n        this.key = t, this.version = e;\n    }\n}\n\n/**\n * Represents a document in Firestore with a key, version, data and whether the\n * data has local mutations applied to it.\n */ class vt extends bt {\n    constructor(t, e, n, s) {\n        super(t, e), this.gt = n, this.Vt = !!s.Vt, this.hasCommittedMutations = !!s.hasCommittedMutations;\n    }\n    field(t) {\n        return this.gt.field(t);\n    }\n    data() {\n        return this.gt;\n    }\n    bt() {\n        return this.gt.proto;\n    }\n    isEqual(t) {\n        return t instanceof vt && this.key.isEqual(t.key) && this.version.isEqual(t.version) && this.Vt === t.Vt && this.hasCommittedMutations === t.hasCommittedMutations && this.gt.isEqual(t.gt);\n    }\n    toString() {\n        return `Document(${this.key}, ${this.version}, ${this.gt.toString()}, {hasLocalMutations: ${this.Vt}}), {hasCommittedMutations: ${this.hasCommittedMutations}})`;\n    }\n    get hasPendingWrites() {\n        return this.Vt || this.hasCommittedMutations;\n    }\n}\n\n/**\n * Compares the value for field `field` in the provided documents. Throws if\n * the field does not exist in both documents.\n */\n/**\n * A class representing a deleted document.\n * Version is set to 0 if we don't point to any specific time, otherwise it\n * denotes time we know it didn't exist at.\n */\nclass St extends bt {\n    constructor(t, e, n) {\n        super(t, e), this.hasCommittedMutations = !(!n || !n.hasCommittedMutations);\n    }\n    toString() {\n        return `NoDocument(${this.key}, ${this.version})`;\n    }\n    get hasPendingWrites() {\n        return this.hasCommittedMutations;\n    }\n    isEqual(t) {\n        return t instanceof St && t.hasCommittedMutations === this.hasCommittedMutations && t.version.isEqual(this.version) && t.key.isEqual(this.key);\n    }\n}\n\n/**\n * A class representing an existing document whose data is unknown (e.g. a\n * document that was updated without a known base document).\n */ class Dt extends bt {\n    toString() {\n        return `UnknownDocument(${this.key}, ${this.version})`;\n    }\n    get hasPendingWrites() {\n        return !0;\n    }\n    isEqual(t) {\n        return t instanceof Dt && t.version.isEqual(this.version) && t.key.isEqual(this.key);\n    }\n}\n\n/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n// Visible for testing\nclass Ct {\n    constructor(t, e = null, n = [], s = [], i = null, r = null, o = null) {\n        this.path = t, this.collectionGroup = e, this.orderBy = n, this.filters = s, this.limit = i, \n        this.startAt = r, this.endAt = o, this.vt = null;\n    }\n}\n\n/**\n * Initializes a Target with a path and optional additional query constraints.\n * Path must currently be empty if this is a collection group query.\n *\n * NOTE: you should always construct `Target` from `Query.toTarget` instead of\n * using this factory method, because `Query` provides an implicit `orderBy`\n * property.\n */ function xt(t, e = null, n = [], s = [], i = null, r = null, o = null) {\n    return new Ct(t, e, n, s, i, r, o);\n}\n\nfunction Nt(t) {\n    const e = b(t);\n    if (null === e.vt) {\n        let t = e.path.rt();\n        null !== e.collectionGroup && (t += \"|cg:\" + e.collectionGroup), t += \"|f:\", t += e.filters.map((t => Lt(t))).join(\",\"), \n        t += \"|ob:\", t += e.orderBy.map((t => function(t) {\n            // TODO(b/29183165): Make this collision robust.\n            return t.field.rt() + t.dir;\n        }(t))).join(\",\"), at(e.limit) || (t += \"|l:\", t += e.limit), e.startAt && (t += \"|lb:\", \n        t += zt(e.startAt)), e.endAt && (t += \"|ub:\", t += zt(e.endAt)), e.vt = t;\n    }\n    return e.vt;\n}\n\nfunction Ft(t) {\n    let e = t.path.rt();\n    return null !== t.collectionGroup && (e += \" collectionGroup=\" + t.collectionGroup), \n    t.filters.length > 0 && (e += `, filters: [${t.filters.map((t => {\n        return `${(e = t).field.rt()} ${e.op} ${Et(e.value)}`;\n        /** Returns a debug description for `filter`. */\n        var e;\n        /** Filter that matches on key fields (i.e. '__name__'). */    })).join(\", \")}]`), \n    at(t.limit) || (e += \", limit: \" + t.limit), t.orderBy.length > 0 && (e += `, orderBy: [${t.orderBy.map((t => function(t) {\n        return `${t.field.rt()} (${t.dir})`;\n    }(t))).join(\", \")}]`), t.startAt && (e += \", startAt: \" + zt(t.startAt)), t.endAt && (e += \", endAt: \" + zt(t.endAt)), \n    `Target(${e})`;\n}\n\nfunction Ot(t, e) {\n    if (t.limit !== e.limit) return !1;\n    if (t.orderBy.length !== e.orderBy.length) return !1;\n    for (let n = 0; n < t.orderBy.length; n++) if (!Jt(t.orderBy[n], e.orderBy[n])) return !1;\n    if (t.filters.length !== e.filters.length) return !1;\n    for (let i = 0; i < t.filters.length; i++) if (n = t.filters[i], s = e.filters[i], \n    n.op !== s.op || !n.field.isEqual(s.field) || !_t(n.value, s.value)) return !1;\n    var n, s;\n    return t.collectionGroup === e.collectionGroup && (!!t.path.isEqual(e.path) && (!!Xt(t.startAt, e.startAt) && Xt(t.endAt, e.endAt)));\n}\n\nfunction kt(t) {\n    return J.wt(t.path) && null === t.collectionGroup && 0 === t.filters.length;\n}\n\nclass Mt extends class {} {\n    constructor(t, e, n) {\n        super(), this.field = t, this.op = e, this.value = n;\n    }\n    /**\n     * Creates a filter based on the provided arguments.\n     */    static create(t, e, n) {\n        return t.ut() ? \"in\" /* IN */ === e || \"not-in\" /* NOT_IN */ === e ? this.St(t, e, n) : new $t(t, e, n) : \"array-contains\" /* ARRAY_CONTAINS */ === e ? new Qt(t, n) : \"in\" /* IN */ === e ? new Kt(t, n) : \"not-in\" /* NOT_IN */ === e ? new Wt(t, n) : \"array-contains-any\" /* ARRAY_CONTAINS_ANY */ === e ? new jt(t, n) : new Mt(t, e, n);\n    }\n    static St(t, e, n) {\n        return \"in\" /* IN */ === e ? new Bt(t, n) : new qt(t, n);\n    }\n    matches(t) {\n        const e = t.field(this.field);\n        // Types do not have to match in NOT_EQUAL filters.\n                return \"!=\" /* NOT_EQUAL */ === this.op ? null !== e && this.Dt(dt(e, this.value)) : null !== e && lt(this.value) === lt(e) && this.Dt(dt(e, this.value));\n        // Only compare types with matching backend order (such as double and int).\n        }\n    Dt(t) {\n        switch (this.op) {\n          case \"<\" /* LESS_THAN */ :\n            return t < 0;\n\n          case \"<=\" /* LESS_THAN_OR_EQUAL */ :\n            return t <= 0;\n\n          case \"==\" /* EQUAL */ :\n            return 0 === t;\n\n          case \"!=\" /* NOT_EQUAL */ :\n            return 0 !== t;\n\n          case \">\" /* GREATER_THAN */ :\n            return t > 0;\n\n          case \">=\" /* GREATER_THAN_OR_EQUAL */ :\n            return t >= 0;\n\n          default:\n            return V();\n        }\n    }\n    Ct() {\n        return [ \"<\" /* LESS_THAN */ , \"<=\" /* LESS_THAN_OR_EQUAL */ , \">\" /* GREATER_THAN */ , \">=\" /* GREATER_THAN_OR_EQUAL */ , \"!=\" /* NOT_EQUAL */ , \"not-in\" /* NOT_IN */ ].indexOf(this.op) >= 0;\n    }\n}\n\nfunction Lt(t) {\n    // TODO(b/29183165): Technically, this won't be unique if two values have\n    // the same description, such as the int 3 and the string \"3\". So we should\n    // add the types in here somehow, too.\n    return t.field.rt() + t.op.toString() + Et(t.value);\n}\n\nclass $t extends Mt {\n    constructor(t, e, n) {\n        super(t, e, n), this.key = J.ft(n.referenceValue);\n    }\n    matches(t) {\n        const e = J.H(t.key, this.key);\n        return this.Dt(e);\n    }\n}\n\n/** Filter that matches on key fields within an array. */ class Bt extends Mt {\n    constructor(t, e) {\n        super(t, \"in\" /* IN */ , e), this.keys = Ut(\"in\" /* IN */ , e);\n    }\n    matches(t) {\n        return this.keys.some((e => e.isEqual(t.key)));\n    }\n}\n\n/** Filter that matches on key fields not present within an array. */ class qt extends Mt {\n    constructor(t, e) {\n        super(t, \"not-in\" /* NOT_IN */ , e), this.keys = Ut(\"not-in\" /* NOT_IN */ , e);\n    }\n    matches(t) {\n        return !this.keys.some((e => e.isEqual(t.key)));\n    }\n}\n\nfunction Ut(t, e) {\n    var n;\n    return ((null === (n = e.arrayValue) || void 0 === n ? void 0 : n.values) || []).map((t => J.ft(t.referenceValue)));\n}\n\n/** A Filter that implements the array-contains operator. */ class Qt extends Mt {\n    constructor(t, e) {\n        super(t, \"array-contains\" /* ARRAY_CONTAINS */ , e);\n    }\n    matches(t) {\n        const e = t.field(this.field);\n        return At(e) && ft(e.arrayValue, this.value);\n    }\n}\n\n/** A Filter that implements the IN operator. */ class Kt extends Mt {\n    constructor(t, e) {\n        super(t, \"in\" /* IN */ , e);\n    }\n    matches(t) {\n        const e = t.field(this.field);\n        return null !== e && ft(this.value.arrayValue, e);\n    }\n}\n\n/** A Filter that implements the not-in operator. */ class Wt extends Mt {\n    constructor(t, e) {\n        super(t, \"not-in\" /* NOT_IN */ , e);\n    }\n    matches(t) {\n        if (ft(this.value.arrayValue, {\n            nullValue: \"NULL_VALUE\"\n        })) return !1;\n        const e = t.field(this.field);\n        return null !== e && !ft(this.value.arrayValue, e);\n    }\n}\n\n/** A Filter that implements the array-contains-any operator. */ class jt extends Mt {\n    constructor(t, e) {\n        super(t, \"array-contains-any\" /* ARRAY_CONTAINS_ANY */ , e);\n    }\n    matches(t) {\n        const e = t.field(this.field);\n        return !(!At(e) || !e.arrayValue.values) && e.arrayValue.values.some((t => ft(this.value.arrayValue, t)));\n    }\n}\n\n/**\n * Represents a bound of a query.\n *\n * The bound is specified with the given components representing a position and\n * whether it's just before or just after the position (relative to whatever the\n * query order is).\n *\n * The position represents a logical index position for a query. It's a prefix\n * of values for the (potentially implicit) order by clauses of a query.\n *\n * Bound provides a function to determine whether a document comes before or\n * after a bound. This is influenced by whether the position is just before or\n * just after the provided values.\n */ class Gt {\n    constructor(t, e) {\n        this.position = t, this.before = e;\n    }\n}\n\nfunction zt(t) {\n    // TODO(b/29183165): Make this collision robust.\n    return `${t.before ? \"b\" : \"a\"}:${t.position.map((t => Et(t))).join(\",\")}`;\n}\n\n/**\n * An ordering on a field, in some Direction. Direction defaults to ASCENDING.\n */ class Ht {\n    constructor(t, e = \"asc\" /* ASCENDING */) {\n        this.field = t, this.dir = e;\n    }\n}\n\nfunction Jt(t, e) {\n    return t.dir === e.dir && t.field.isEqual(e.field);\n}\n\n/**\n * Returns true if a document sorts before a bound using the provided sort\n * order.\n */ function Yt(t, e, n) {\n    let s = 0;\n    for (let i = 0; i < t.position.length; i++) {\n        const r = e[i], o = t.position[i];\n        if (r.field.ut()) s = J.H(J.ft(o.referenceValue), n.key); else {\n            s = dt(o, n.field(r.field));\n        }\n        if (\"desc\" /* DESCENDING */ === r.dir && (s *= -1), 0 !== s) break;\n    }\n    return t.before ? s <= 0 : s < 0;\n}\n\nfunction Xt(t, e) {\n    if (null === t) return null === e;\n    if (null === e) return !1;\n    if (t.before !== e.before || t.position.length !== e.position.length) return !1;\n    for (let n = 0; n < t.position.length; n++) {\n        if (!_t(t.position[n], e.position[n])) return !1;\n    }\n    return !0;\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Query encapsulates all the query attributes we support in the SDK. It can\n * be run against the LocalStore, as well as be converted to a `Target` to\n * query the RemoteStore results.\n *\n * Visible for testing.\n */ class Zt {\n    /**\n     * Initializes a Query with a path and optional additional query constraints.\n     * Path must currently be empty if this is a collection group query.\n     */\n    constructor(t, e = null, n = [], s = [], i = null, r = \"F\" /* First */ , o = null, c = null) {\n        this.path = t, this.collectionGroup = e, this.xt = n, this.filters = s, this.limit = i, \n        this.limitType = r, this.startAt = o, this.endAt = c, this.Nt = null, \n        // The corresponding `Target` of this `Query` instance.\n        this.Ft = null, this.startAt, this.endAt;\n    }\n}\n\n/** Creates a new Query instance with the options provided. */ function te(t, e, n, s, i, r, o, c) {\n    return new Zt(t, e, n, s, i, r, o, c);\n}\n\n/** Creates a new Query for a query that matches all documents at `path` */ function ee(t) {\n    return new Zt(t);\n}\n\n/**\n * Helper to convert a collection group query into a collection query at a\n * specific path. This is used when executing collection group queries, since\n * we have to split the query into a set of collection queries at multiple\n * paths.\n */ function ne(t) {\n    return !at(t.limit) && \"F\" /* First */ === t.limitType;\n}\n\nfunction se(t) {\n    return !at(t.limit) && \"L\" /* Last */ === t.limitType;\n}\n\nfunction ie(t) {\n    return t.xt.length > 0 ? t.xt[0].field : null;\n}\n\nfunction re(t) {\n    for (const e of t.filters) if (e.Ct()) return e.field;\n    return null;\n}\n\n/**\n * Checks if any of the provided Operators are included in the query and\n * returns the first one that is, or null if none are.\n */\n/**\n * Returns whether the query matches a collection group rather than a specific\n * collection.\n */\nfunction oe(t) {\n    return null !== t.collectionGroup;\n}\n\n/**\n * Returns the implicit order by constraint that is used to execute the Query,\n * which can be different from the order by constraints the user provided (e.g.\n * the SDK and backend always orders by `__name__`).\n */ function ce(t) {\n    const e = b(t);\n    if (null === e.Nt) {\n        e.Nt = [];\n        const t = re(e), n = ie(e);\n        if (null !== t && null === n) \n        // In order to implicitly add key ordering, we must also add the\n        // inequality filter field for it to be a valid query.\n        // Note that the default inequality field and key ordering is ascending.\n        t.ut() || e.Nt.push(new Ht(t)), e.Nt.push(new Ht(H.ht(), \"asc\" /* ASCENDING */)); else {\n            let t = !1;\n            for (const n of e.xt) e.Nt.push(n), n.field.ut() && (t = !0);\n            if (!t) {\n                // The order of the implicit key ordering always matches the last\n                // explicit order by\n                const t = e.xt.length > 0 ? e.xt[e.xt.length - 1].dir : \"asc\" /* ASCENDING */;\n                e.Nt.push(new Ht(H.ht(), t));\n            }\n        }\n    }\n    return e.Nt;\n}\n\n/**\n * Converts this `Query` instance to it's corresponding `Target` representation.\n */ function ae(t) {\n    const e = b(t);\n    if (!e.Ft) if (\"F\" /* First */ === e.limitType) e.Ft = xt(e.path, e.collectionGroup, ce(e), e.filters, e.limit, e.startAt, e.endAt); else {\n        // Flip the orderBy directions since we want the last results\n        const t = [];\n        for (const n of ce(e)) {\n            const e = \"desc\" /* DESCENDING */ === n.dir ? \"asc\" /* ASCENDING */ : \"desc\" /* DESCENDING */;\n            t.push(new Ht(n.field, e));\n        }\n        // We need to swap the cursors to match the now-flipped query ordering.\n                const n = e.endAt ? new Gt(e.endAt.position, !e.endAt.before) : null, s = e.startAt ? new Gt(e.startAt.position, !e.startAt.before) : null;\n        // Now return as a LimitType.First query.\n        e.Ft = xt(e.path, e.collectionGroup, t, e.filters, e.limit, n, s);\n    }\n    return e.Ft;\n}\n\nfunction ue(t, e, n) {\n    return new Zt(t.path, t.collectionGroup, t.xt.slice(), t.filters.slice(), e, n, t.startAt, t.endAt);\n}\n\nfunction he(t, e) {\n    return Ot(ae(t), ae(e)) && t.limitType === e.limitType;\n}\n\n// TODO(b/29183165): This is used to get a unique string from a query to, for\n// example, use as a dictionary key, but the implementation is subject to\n// collisions. Make it collision-free.\nfunction le(t) {\n    return `${Nt(ae(t))}|lt:${t.limitType}`;\n}\n\nfunction _e(t) {\n    return `Query(target=${Ft(ae(t))}; limitType=${t.limitType})`;\n}\n\n/** Returns whether `doc` matches the constraints of `query`. */ function fe(t, e) {\n    return function(t, e) {\n        const n = e.key.path;\n        return null !== t.collectionGroup ? e.key.dt(t.collectionGroup) && t.path.nt(n) : J.wt(t.path) ? t.path.isEqual(n) : t.path.st(n);\n    }\n    /**\n * A document must have a value for every ordering clause in order to show up\n * in the results.\n */ (t, e) && function(t, e) {\n        for (const n of t.xt) \n        // order by key always matches\n        if (!n.field.ut() && null === e.field(n.field)) return !1;\n        return !0;\n    }(t, e) && function(t, e) {\n        for (const n of t.filters) if (!n.matches(e)) return !1;\n        return !0;\n    }\n    /** Makes sure a document is within the bounds, if provided. */ (t, e) && function(t, e) {\n        if (t.startAt && !Yt(t.startAt, ce(t), e)) return !1;\n        if (t.endAt && Yt(t.endAt, ce(t), e)) return !1;\n        return !0;\n    }\n    /**\n * Returns a new comparator function that can be used to compare two documents\n * based on the Query's ordering constraint.\n */ (t, e);\n}\n\nfunction de(t) {\n    return (e, n) => {\n        let s = !1;\n        for (const i of ce(t)) {\n            const t = we(i, e, n);\n            if (0 !== t) return t;\n            s = s || i.field.ut();\n        }\n        return 0;\n    };\n}\n\nfunction we(t, e, n) {\n    const s = t.field.ut() ? J.H(e.key, n.key) : function(t, e, n) {\n        const s = e.field(t), i = n.field(t);\n        return null !== s && null !== i ? dt(s, i) : V();\n    }(t.field, e, n);\n    switch (t.dir) {\n      case \"asc\" /* ASCENDING */ :\n        return s;\n\n      case \"desc\" /* DESCENDING */ :\n        return -1 * s;\n\n      default:\n        return V();\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * An immutable set of metadata that the local store tracks for each target.\n */ class Ee {\n    constructor(\n    /** The target being listened to. */\n    t, \n    /**\n     * The target ID to which the target corresponds; Assigned by the\n     * LocalStore for user listens and by the SyncEngine for limbo watches.\n     */\n    e, \n    /** The purpose of the target. */\n    n, \n    /**\n     * The sequence number of the last transaction during which this target data\n     * was modified.\n     */\n    s, \n    /** The latest snapshot version seen for this target. */\n    i = W.min()\n    /**\n     * The maximum snapshot version at which the associated view\n     * contained no limbo documents.\n     */ , r = W.min()\n    /**\n     * An opaque, server-assigned token that allows watching a target to be\n     * resumed after disconnecting without retransmitting all the data that\n     * matches the target. The resume token essentially identifies a point in\n     * time from which the server should resume sending results.\n     */ , o = N.T) {\n        this.target = t, this.targetId = e, this.Ot = n, this.sequenceNumber = s, this.kt = i, \n        this.lastLimboFreeSnapshotVersion = r, this.resumeToken = o;\n    }\n    /** Creates a new target data instance with an updated sequence number. */    Mt(t) {\n        return new Ee(this.target, this.targetId, this.Ot, t, this.kt, this.lastLimboFreeSnapshotVersion, this.resumeToken);\n    }\n    /**\n     * Creates a new target data instance with an updated resume token and\n     * snapshot version.\n     */    Lt(t, e) {\n        return new Ee(this.target, this.targetId, this.Ot, this.sequenceNumber, e, this.lastLimboFreeSnapshotVersion, t);\n    }\n    /**\n     * Creates a new target data instance with an updated last limbo free\n     * snapshot version number.\n     */    $t(t) {\n        return new Ee(this.target, this.targetId, this.Ot, this.sequenceNumber, this.kt, t, this.resumeToken);\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Returns an DoubleValue for `value` that is encoded based the serializer's\n * `useProto3Json` setting.\n */ function Te(t, e) {\n    if (t.Bt) {\n        if (isNaN(e)) return {\n            doubleValue: \"NaN\"\n        };\n        if (e === 1 / 0) return {\n            doubleValue: \"Infinity\"\n        };\n        if (e === -1 / 0) return {\n            doubleValue: \"-Infinity\"\n        };\n    }\n    return {\n        doubleValue: ut(e) ? \"-0\" : e\n    };\n}\n\n/**\n * Returns an IntegerValue for `value`.\n */ function Ie(t) {\n    return {\n        integerValue: \"\" + t\n    };\n}\n\n/**\n * Returns a value for a number that's appropriate to put into a proto.\n * The return value is an IntegerValue if it can safely represent the value,\n * otherwise a DoubleValue is returned.\n */ function me(t, e) {\n    return ht(e) ? Ie(e) : Te(t, e);\n}\n\n/**\n * @license\n * Copyright 2018 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/** Used to represent a field transform on a mutation. */ class Ae {\n    constructor() {\n        // Make sure that the structural type of `TransformOperation` is unique.\n        // See https://github.com/microsoft/TypeScript/issues/5451\n        this.qt = void 0;\n    }\n}\n\n/**\n * Computes the local transform result against the provided `previousValue`,\n * optionally using the provided localWriteTime.\n */ function Re(t, e, n) {\n    return t instanceof ge ? function(t, e) {\n        const n = {\n            fields: {\n                __type__: {\n                    stringValue: \"server_timestamp\"\n                },\n                __local_write_time__: {\n                    timestampValue: {\n                        seconds: t.seconds,\n                        nanos: t.nanoseconds\n                    }\n                }\n            }\n        };\n        return e && (n.fields.__previous_value__ = e), {\n            mapValue: n\n        };\n    }(n, e) : t instanceof Ve ? pe(t, e) : t instanceof be ? ve(t, e) : function(t, e) {\n        // PORTING NOTE: Since JavaScript's integer arithmetic is limited to 53 bit\n        // precision and resolves overflows by reducing precision, we do not\n        // manually cap overflows at 2^63.\n        const n = ye(t, e), s = De(n) + De(t.Ut);\n        return mt(n) && mt(t.Ut) ? Ie(s) : Te(t.Qt, s);\n    }(t, e);\n}\n\n/**\n * Computes a final transform result after the transform has been acknowledged\n * by the server, potentially using the server-provided transformResult.\n */ function Pe(t, e, n) {\n    // The server just sends null as the transform result for array operations,\n    // so we have to calculate a result the same as we do for local\n    // applications.\n    return t instanceof Ve ? pe(t, e) : t instanceof be ? ve(t, e) : n;\n}\n\n/**\n * If this transform operation is not idempotent, returns the base value to\n * persist for this transform. If a base value is returned, the transform\n * operation is always applied to this base value, even if document has\n * already been updated.\n *\n * Base values provide consistent behavior for non-idempotent transforms and\n * allow us to return the same latency-compensated value even if the backend\n * has already applied the transform operation. The base value is null for\n * idempotent transforms, as they can be re-played even if the backend has\n * already applied them.\n *\n * @returns a base value to store along with the mutation, or null for\n * idempotent transforms.\n */ function ye(t, e) {\n    return t instanceof Se ? mt(n = e) || function(t) {\n        return !!t && \"doubleValue\" in t;\n    }\n    /** Returns true if `value` is either an IntegerValue or a DoubleValue. */ (n) ? e : {\n        integerValue: 0\n    } : null;\n    var n;\n}\n\n/** Transforms a value into a server-generated timestamp. */\nclass ge extends Ae {}\n\n/** Transforms an array value via a union operation. */ class Ve extends Ae {\n    constructor(t) {\n        super(), this.elements = t;\n    }\n}\n\nfunction pe(t, e) {\n    const n = Ce(e);\n    for (const e of t.elements) n.some((t => _t(t, e))) || n.push(e);\n    return {\n        arrayValue: {\n            values: n\n        }\n    };\n}\n\n/** Transforms an array value via a remove operation. */ class be extends Ae {\n    constructor(t) {\n        super(), this.elements = t;\n    }\n}\n\nfunction ve(t, e) {\n    let n = Ce(e);\n    for (const e of t.elements) n = n.filter((t => !_t(t, e)));\n    return {\n        arrayValue: {\n            values: n\n        }\n    };\n}\n\n/**\n * Implements the backend semantics for locally computed NUMERIC_ADD (increment)\n * transforms. Converts all field values to integers or doubles, but unlike the\n * backend does not cap integer values at 2^63. Instead, JavaScript number\n * arithmetic is used and precision loss can occur for values greater than 2^53.\n */ class Se extends Ae {\n    constructor(t, e) {\n        super(), this.Qt = t, this.Ut = e;\n    }\n}\n\nfunction De(t) {\n    return st(t.integerValue || t.doubleValue);\n}\n\nfunction Ce(t) {\n    return At(t) && t.arrayValue.values ? t.arrayValue.values.slice() : [];\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/** A field path and the TransformOperation to perform upon it. */ class xe {\n    constructor(t, e) {\n        this.field = t, this.transform = e;\n    }\n}\n\nfunction Ne(t, e) {\n    return t.field.isEqual(e.field) && function(t, e) {\n        return t instanceof Ve && e instanceof Ve || t instanceof be && e instanceof be ? C(t.elements, e.elements, _t) : t instanceof Se && e instanceof Se ? _t(t.Ut, e.Ut) : t instanceof ge && e instanceof ge;\n    }(t.transform, e.transform);\n}\n\n/** The result of successfully applying a mutation to the backend. */\nclass Fe {\n    constructor(\n    /**\n     * The version at which the mutation was committed:\n     *\n     * - For most operations, this is the updateTime in the WriteResult.\n     * - For deletes, the commitTime of the WriteResponse (because deletes are\n     *   not stored and have no updateTime).\n     *\n     * Note that these versions can be different: No-op writes will not change\n     * the updateTime even though the commitTime advances.\n     */\n    t, \n    /**\n     * The resulting fields returned from the backend after a mutation\n     * containing field transforms has been committed. Contains one FieldValue\n     * for each FieldTransform that was in the mutation.\n     *\n     * Will be null if the mutation did not contain any field transforms.\n     */\n    e) {\n        this.version = t, this.transformResults = e;\n    }\n}\n\n/**\n * Encodes a precondition for a mutation. This follows the model that the\n * backend accepts with the special case of an explicit \"empty\" precondition\n * (meaning no precondition).\n */ class Oe {\n    constructor(t, e) {\n        this.updateTime = t, this.exists = e;\n    }\n    /** Creates a new empty Precondition. */    static Kt() {\n        return new Oe;\n    }\n    /** Creates a new Precondition with an exists flag. */    static exists(t) {\n        return new Oe(void 0, t);\n    }\n    /** Creates a new Precondition based on a version a document exists at. */    static updateTime(t) {\n        return new Oe(t);\n    }\n    /** Returns whether this Precondition is empty. */    get Wt() {\n        return void 0 === this.updateTime && void 0 === this.exists;\n    }\n    isEqual(t) {\n        return this.exists === t.exists && (this.updateTime ? !!t.updateTime && this.updateTime.isEqual(t.updateTime) : !t.updateTime);\n    }\n}\n\n/**\n * Returns true if the preconditions is valid for the given document\n * (or null if no document is available).\n */ function ke(t, e) {\n    return void 0 !== t.updateTime ? e instanceof vt && e.version.isEqual(t.updateTime) : void 0 === t.exists || t.exists === e instanceof vt;\n}\n\n/**\n * A mutation describes a self-contained change to a document. Mutations can\n * create, replace, delete, and update subsets of documents.\n *\n * Mutations not only act on the value of the document but also its version.\n *\n * For local mutations (mutations that haven't been committed yet), we preserve\n * the existing version for Set and Patch mutations. For Delete mutations, we\n * reset the version to 0.\n *\n * Here's the expected transition table.\n *\n * MUTATION           APPLIED TO            RESULTS IN\n *\n * SetMutation        Document(v3)          Document(v3)\n * SetMutation        NoDocument(v3)        Document(v0)\n * SetMutation        null                  Document(v0)\n * PatchMutation      Document(v3)          Document(v3)\n * PatchMutation      NoDocument(v3)        NoDocument(v3)\n * PatchMutation      null                  null\n * DeleteMutation     Document(v3)          NoDocument(v0)\n * DeleteMutation     NoDocument(v3)        NoDocument(v0)\n * DeleteMutation     null                  NoDocument(v0)\n *\n * For acknowledged mutations, we use the updateTime of the WriteResponse as\n * the resulting version for Set and Patch mutations. As deletes have no\n * explicit update time, we use the commitTime of the WriteResponse for\n * Delete mutations.\n *\n * If a mutation is acknowledged by the backend but fails the precondition check\n * locally, we return an `UnknownDocument` and rely on Watch to send us the\n * updated version.\n *\n * Field transforms are used only with Patch and Set Mutations. We use the\n * `updateTransforms` message to store transforms, rather than the `transforms`s\n * messages.\n *\n * ## Subclassing Notes\n *\n * Subclasses of Mutation need to implement applyToRemoteDocument() and\n * applyToLocalView() to implement the actual behavior of applying the mutation\n * to some source document.\n */ class Me {}\n\n/**\n * Applies this mutation to the given MaybeDocument or null for the purposes\n * of computing a new remote document. If the input document doesn't match the\n * expected state (e.g. it is null or outdated), an `UnknownDocument` can be\n * returned.\n *\n * @param mutation - The mutation to apply.\n * @param maybeDoc - The document to mutate. The input document can be null if\n *     the client has no knowledge of the pre-mutation state of the document.\n * @param mutationResult - The result of applying the mutation from the backend.\n * @returns The mutated document. The returned document may be an\n *     UnknownDocument if the mutation could not be applied to the locally\n *     cached base document.\n */ function Le(t, e, n) {\n    return t instanceof Qe ? function(t, e, n) {\n        // Unlike applySetMutationToLocalView, if we're applying a mutation to a\n        // remote document the server has accepted the mutation so the precondition\n        // must have held.\n        let s = t.value;\n        if (n.transformResults) {\n            const i = je(t.fieldTransforms, e, n.transformResults);\n            s = ze(t.fieldTransforms, s, i);\n        }\n        return new vt(t.key, n.version, s, {\n            hasCommittedMutations: !0\n        });\n    }(t, e, n) : t instanceof Ke ? function(t, e, n) {\n        if (!ke(t.jt, e)) \n        // Since the mutation was not rejected, we know that the precondition\n        // matched on the backend. We therefore must not have the expected version\n        // of the document in our cache and return an UnknownDocument with the\n        // known updateTime.\n        return new Dt(t.key, n.version);\n        const s = n.transformResults ? je(t.fieldTransforms, e, n.transformResults) : [], i = We(t, e, s);\n        return new vt(t.key, n.version, i, {\n            hasCommittedMutations: !0\n        });\n    }(t, e, n) : function(t, e, n) {\n        // Unlike applyToLocalView, if we're applying a mutation to a remote\n        // document the server has accepted the mutation so the precondition must\n        // have held.\n        return new St(t.key, n.version, {\n            hasCommittedMutations: !0\n        });\n    }(t, 0, n);\n}\n\n/**\n * Applies this mutation to the given MaybeDocument or null for the purposes\n * of computing the new local view of a document. Both the input and returned\n * documents can be null.\n *\n * @param mutation - The mutation to apply.\n * @param maybeDoc - The document to mutate. The input document can be null if\n *     the client has no knowledge of the pre-mutation state of the document.\n * @param localWriteTime - A timestamp indicating the local write time of the\n *     batch this mutation is a part of.\n * @returns The mutated document. The returned document may be null, but only\n *     if maybeDoc was null and the mutation would not create a new document.\n */ function $e(t, e, n) {\n    return t instanceof Qe ? function(t, e, n) {\n        if (!ke(t.jt, e)) return e;\n        let s = t.value;\n        const i = Ge(t.fieldTransforms, n, e);\n        s = ze(t.fieldTransforms, s, i);\n        const r = Ue(e);\n        return new vt(t.key, r, s, {\n            Vt: !0\n        });\n    }\n    /**\n * A mutation that modifies fields of the document at the given key with the\n * given values. The values are applied through a field mask:\n *\n *  * When a field is in both the mask and the values, the corresponding field\n *    is updated.\n *  * When a field is in neither the mask nor the values, the corresponding\n *    field is unmodified.\n *  * When a field is in the mask but not in the values, the corresponding field\n *    is deleted.\n *  * When a field is not in the mask but is in the values, the values map is\n *    ignored.\n */ (t, e, n) : t instanceof Ke ? function(t, e, n) {\n        if (!ke(t.jt, e)) return e;\n        const s = Ue(e), i = Ge(t.fieldTransforms, n, e), r = We(t, e, i);\n        return new vt(t.key, s, r, {\n            Vt: !0\n        });\n    }\n    /**\n * Patches the data of document if available or creates a new document. Note\n * that this does not check whether or not the precondition of this patch\n * holds.\n */ (t, e, n) : function(t, e) {\n        if (!ke(t.jt, e)) return e;\n        return new St(t.key, W.min());\n    }\n    /**\n * A mutation that verifies the existence of the document at the given key with\n * the provided precondition.\n *\n * The `verify` operation is only used in Transactions, and this class serves\n * primarily to facilitate serialization into protos.\n */ (t, e);\n}\n\n/**\n * If this mutation is not idempotent, returns the base value to persist with\n * this mutation. If a base value is returned, the mutation is always applied\n * to this base value, even if document has already been updated.\n *\n * The base value is a sparse object that consists of only the document\n * fields for which this mutation contains a non-idempotent transformation\n * (e.g. a numeric increment). The provided value guarantees consistent\n * behavior for non-idempotent transforms and allow us to return the same\n * latency-compensated value even if the backend has already applied the\n * mutation. The base value is null for idempotent mutations, as they can be\n * re-played even if the backend has already applied them.\n *\n * @returns a base value to store along with the mutation, or null for\n * idempotent mutations.\n */ function Be(t, e) {\n    return function(t, e) {\n        let n = null;\n        for (const s of t) {\n            const t = e instanceof vt ? e.field(s.field) : void 0, i = ye(s.transform, t || null);\n            null != i && (n = null == n ? (new Vt).set(s.field, i) : n.set(s.field, i));\n        }\n        return n ? n.Pt() : null;\n    }(t.fieldTransforms, e);\n}\n\nfunction qe(t, e) {\n    return t.type === e.type && (!!t.key.isEqual(e.key) && (!!t.jt.isEqual(e.jt) && (!!function(t, e) {\n        return void 0 === t && void 0 === e || !(!t || !e) && C(t, e, ((t, e) => Ne(t, e)));\n    }(t.fieldTransforms, e.fieldTransforms) && (0 /* Set */ === t.type ? t.value.isEqual(e.value) : 1 /* Patch */ !== t.type || t.data.isEqual(e.data) && t.Gt.isEqual(e.Gt)))));\n}\n\n/**\n * Returns the version from the given document for use as the result of a\n * mutation. Mutations are defined to return the version of the base document\n * only if it is an existing document. Deleted and unknown documents have a\n * post-mutation version of SnapshotVersion.min().\n */ function Ue(t) {\n    return t instanceof vt ? t.version : W.min();\n}\n\n/**\n * A mutation that creates or replaces the document at the given key with the\n * object value contents.\n */ class Qe extends Me {\n    constructor(t, e, n, s = []) {\n        super(), this.key = t, this.value = e, this.jt = n, this.fieldTransforms = s, this.type = 0 /* Set */;\n    }\n}\n\nclass Ke extends Me {\n    constructor(t, e, n, s, i = []) {\n        super(), this.key = t, this.data = e, this.Gt = n, this.jt = s, this.fieldTransforms = i, \n        this.type = 1 /* Patch */;\n    }\n}\n\nfunction We(t, e, n) {\n    let s;\n    return s = e instanceof vt ? e.data() : gt.empty(), s = function(t, e) {\n        const n = new Vt(e);\n        return t.Gt.fields.forEach((e => {\n            if (!e.et()) {\n                const s = t.data.field(e);\n                null !== s ? n.set(e, s) : n.delete(e);\n            }\n        })), n.Pt();\n    }\n    /**\n * Creates a list of \"transform results\" (a transform result is a field value\n * representing the result of applying a transform) for use after a mutation\n * containing transforms has been acknowledged by the server.\n *\n * @param fieldTransforms - The field transforms to apply the result to.\n * @param maybeDoc - The current state of the document after applying all\n * previous mutations.\n * @param serverTransformResults - The transform results received by the server.\n * @returns The transform results list.\n */ (t, s), s = ze(t.fieldTransforms, s, n), s;\n}\n\nfunction je(t, e, n) {\n    const s = [];\n    p(t.length === n.length);\n    for (let i = 0; i < n.length; i++) {\n        const r = t[i], o = r.transform;\n        let c = null;\n        e instanceof vt && (c = e.field(r.field)), s.push(Pe(o, c, n[i]));\n    }\n    return s;\n}\n\n/**\n * Creates a list of \"transform results\" (a transform result is a field value\n * representing the result of applying a transform) for use when applying a\n * transform locally.\n *\n * @param fieldTransforms - The field transforms to apply the result to.\n * @param localWriteTime - The local time of the mutation (used to\n *     generate ServerTimestampValues).\n * @param maybeDoc - The current state of the document after applying all\n *     previous mutations.\n * @returns The transform results list.\n */ function Ge(t, e, n) {\n    const s = [];\n    for (const i of t) {\n        const t = i.transform;\n        let r = null;\n        n instanceof vt && (r = n.field(i.field)), s.push(Re(t, r, e));\n    }\n    return s;\n}\n\nfunction ze(t, e, n) {\n    const s = new Vt(e);\n    for (let e = 0; e < t.length; e++) {\n        const i = t[e];\n        s.set(i.field, n[e]);\n    }\n    return s.Pt();\n}\n\n/** A mutation that deletes the document at the given key. */ class He extends Me {\n    constructor(t, e) {\n        super(), this.key = t, this.jt = e, this.type = 2 /* Delete */ , this.fieldTransforms = [];\n    }\n}\n\nclass Je extends Me {\n    constructor(t, e) {\n        super(), this.key = t, this.jt = e, this.type = 3 /* Verify */ , this.fieldTransforms = [];\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ class Ye {\n    // TODO(b/33078163): just use simplest form of existence filter for now\n    constructor(t) {\n        this.count = t;\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Error Codes describing the different ways GRPC can fail. These are copied\n * directly from GRPC's sources here:\n *\n * https://github.com/grpc/grpc/blob/bceec94ea4fc5f0085d81235d8e1c06798dc341a/include/grpc%2B%2B/impl/codegen/status_code_enum.h\n *\n * Important! The names of these identifiers matter because the string forms\n * are used for reverse lookups from the webchannel stream. Do NOT change the\n * names of these identifiers or change this into a const enum.\n */ var Xe, Ze;\n\n/**\n * Determines whether an error code represents a permanent error when received\n * in response to a non-write operation.\n *\n * See isPermanentWriteError for classifying write errors.\n */\nfunction tn(t) {\n    switch (t) {\n      case F.OK:\n        return V();\n\n      case F.CANCELLED:\n      case F.UNKNOWN:\n      case F.DEADLINE_EXCEEDED:\n      case F.RESOURCE_EXHAUSTED:\n      case F.INTERNAL:\n      case F.UNAVAILABLE:\n // Unauthenticated means something went wrong with our token and we need\n        // to retry with new credentials which will happen automatically.\n              case F.UNAUTHENTICATED:\n        return !1;\n\n      case F.INVALID_ARGUMENT:\n      case F.NOT_FOUND:\n      case F.ALREADY_EXISTS:\n      case F.PERMISSION_DENIED:\n      case F.FAILED_PRECONDITION:\n // Aborted might be retried in some scenarios, but that is dependant on\n        // the context and should handled individually by the calling code.\n        // See https://cloud.google.com/apis/design/errors.\n              case F.ABORTED:\n      case F.OUT_OF_RANGE:\n      case F.UNIMPLEMENTED:\n      case F.DATA_LOSS:\n        return !0;\n\n      default:\n        return V();\n    }\n}\n\n/**\n * Determines whether an error code represents a permanent error when received\n * in response to a write operation.\n *\n * Write operations must be handled specially because as of b/119437764, ABORTED\n * errors on the write stream should be retried too (even though ABORTED errors\n * are not generally retryable).\n *\n * Note that during the initial handshake on the write stream an ABORTED error\n * signals that we should discard our stream token (i.e. it is permanent). This\n * means a handshake error should be classified with isPermanentError, above.\n */\n/**\n * Maps an error Code from GRPC status code number, like 0, 1, or 14. These\n * are not the same as HTTP status codes.\n *\n * @returns The Code equivalent to the given GRPC status code. Fails if there\n *     is no match.\n */\nfunction en(t) {\n    if (void 0 === t) \n    // This shouldn't normally happen, but in certain error cases (like trying\n    // to send invalid proto messages) we may get an error with no GRPC code.\n    return P(\"GRPC error has no .code\"), F.UNKNOWN;\n    switch (t) {\n      case Xe.OK:\n        return F.OK;\n\n      case Xe.CANCELLED:\n        return F.CANCELLED;\n\n      case Xe.UNKNOWN:\n        return F.UNKNOWN;\n\n      case Xe.DEADLINE_EXCEEDED:\n        return F.DEADLINE_EXCEEDED;\n\n      case Xe.RESOURCE_EXHAUSTED:\n        return F.RESOURCE_EXHAUSTED;\n\n      case Xe.INTERNAL:\n        return F.INTERNAL;\n\n      case Xe.UNAVAILABLE:\n        return F.UNAVAILABLE;\n\n      case Xe.UNAUTHENTICATED:\n        return F.UNAUTHENTICATED;\n\n      case Xe.INVALID_ARGUMENT:\n        return F.INVALID_ARGUMENT;\n\n      case Xe.NOT_FOUND:\n        return F.NOT_FOUND;\n\n      case Xe.ALREADY_EXISTS:\n        return F.ALREADY_EXISTS;\n\n      case Xe.PERMISSION_DENIED:\n        return F.PERMISSION_DENIED;\n\n      case Xe.FAILED_PRECONDITION:\n        return F.FAILED_PRECONDITION;\n\n      case Xe.ABORTED:\n        return F.ABORTED;\n\n      case Xe.OUT_OF_RANGE:\n        return F.OUT_OF_RANGE;\n\n      case Xe.UNIMPLEMENTED:\n        return F.UNIMPLEMENTED;\n\n      case Xe.DATA_LOSS:\n        return F.DATA_LOSS;\n\n      default:\n        return V();\n    }\n}\n\n/**\n * Converts an HTTP response's error status to the equivalent error code.\n *\n * @param status - An HTTP error response status (\"FAILED_PRECONDITION\",\n * \"UNKNOWN\", etc.)\n * @returns The equivalent Code. Non-matching responses are mapped to\n *     Code.UNKNOWN.\n */ (Ze = Xe || (Xe = {}))[Ze.OK = 0] = \"OK\", Ze[Ze.CANCELLED = 1] = \"CANCELLED\", \nZe[Ze.UNKNOWN = 2] = \"UNKNOWN\", Ze[Ze.INVALID_ARGUMENT = 3] = \"INVALID_ARGUMENT\", \nZe[Ze.DEADLINE_EXCEEDED = 4] = \"DEADLINE_EXCEEDED\", Ze[Ze.NOT_FOUND = 5] = \"NOT_FOUND\", \nZe[Ze.ALREADY_EXISTS = 6] = \"ALREADY_EXISTS\", Ze[Ze.PERMISSION_DENIED = 7] = \"PERMISSION_DENIED\", \nZe[Ze.UNAUTHENTICATED = 16] = \"UNAUTHENTICATED\", Ze[Ze.RESOURCE_EXHAUSTED = 8] = \"RESOURCE_EXHAUSTED\", \nZe[Ze.FAILED_PRECONDITION = 9] = \"FAILED_PRECONDITION\", Ze[Ze.ABORTED = 10] = \"ABORTED\", \nZe[Ze.OUT_OF_RANGE = 11] = \"OUT_OF_RANGE\", Ze[Ze.UNIMPLEMENTED = 12] = \"UNIMPLEMENTED\", \nZe[Ze.INTERNAL = 13] = \"INTERNAL\", Ze[Ze.UNAVAILABLE = 14] = \"UNAVAILABLE\", Ze[Ze.DATA_LOSS = 15] = \"DATA_LOSS\";\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n// An immutable sorted map implementation, based on a Left-leaning Red-Black\n// tree.\nclass nn {\n    constructor(t, e) {\n        this.H = t, this.root = e || rn.EMPTY;\n    }\n    // Returns a copy of the map, with the specified key/value added or replaced.\n    zt(t, e) {\n        return new nn(this.H, this.root.zt(t, e, this.H).copy(null, null, rn.Ht, null, null));\n    }\n    // Returns a copy of the map, with the specified key removed.\n    remove(t) {\n        return new nn(this.H, this.root.remove(t, this.H).copy(null, null, rn.Ht, null, null));\n    }\n    // Returns the value of the node with the given key, or null.\n    get(t) {\n        let e = this.root;\n        for (;!e.et(); ) {\n            const n = this.H(t, e.key);\n            if (0 === n) return e.value;\n            n < 0 ? e = e.left : n > 0 && (e = e.right);\n        }\n        return null;\n    }\n    // Returns the index of the element in this sorted map, or -1 if it doesn't\n    // exist.\n    indexOf(t) {\n        // Number of nodes that were pruned when descending right\n        let e = 0, n = this.root;\n        for (;!n.et(); ) {\n            const s = this.H(t, n.key);\n            if (0 === s) return e + n.left.size;\n            s < 0 ? n = n.left : (\n            // Count all nodes left of the node plus the node itself\n            e += n.left.size + 1, n = n.right);\n        }\n        // Node not found\n                return -1;\n    }\n    et() {\n        return this.root.et();\n    }\n    // Returns the total number of nodes in the map.\n    get size() {\n        return this.root.size;\n    }\n    // Returns the minimum key in the map.\n    Jt() {\n        return this.root.Jt();\n    }\n    // Returns the maximum key in the map.\n    Yt() {\n        return this.root.Yt();\n    }\n    // Traverses the map in key order and calls the specified action function\n    // for each key/value pair. If action returns true, traversal is aborted.\n    // Returns the first truthy value returned by action, or the last falsey\n    // value returned by action.\n    Xt(t) {\n        return this.root.Xt(t);\n    }\n    forEach(t) {\n        this.Xt(((e, n) => (t(e, n), !1)));\n    }\n    toString() {\n        const t = [];\n        return this.Xt(((e, n) => (t.push(`${e}:${n}`), !1))), `{${t.join(\", \")}}`;\n    }\n    // Traverses the map in reverse key order and calls the specified action\n    // function for each key/value pair. If action returns true, traversal is\n    // aborted.\n    // Returns the first truthy value returned by action, or the last falsey\n    // value returned by action.\n    Zt(t) {\n        return this.root.Zt(t);\n    }\n    // Returns an iterator over the SortedMap.\n    te() {\n        return new sn(this.root, null, this.H, !1);\n    }\n    ee(t) {\n        return new sn(this.root, t, this.H, !1);\n    }\n    ne() {\n        return new sn(this.root, null, this.H, !0);\n    }\n    se(t) {\n        return new sn(this.root, t, this.H, !0);\n    }\n}\n\n // end SortedMap\n// An iterator over an LLRBNode.\nclass sn {\n    constructor(t, e, n, s) {\n        this.ie = s, this.re = [];\n        let i = 1;\n        for (;!t.et(); ) if (i = e ? n(t.key, e) : 1, \n        // flip the comparison if we're going in reverse\n        s && (i *= -1), i < 0) \n        // This node is less than our start key. ignore it\n        t = this.ie ? t.left : t.right; else {\n            if (0 === i) {\n                // This node is exactly equal to our start key. Push it on the stack,\n                // but stop iterating;\n                this.re.push(t);\n                break;\n            }\n            // This node is greater than our start key, add it to the stack and move\n            // to the next one\n            this.re.push(t), t = this.ie ? t.right : t.left;\n        }\n    }\n    oe() {\n        let t = this.re.pop();\n        const e = {\n            key: t.key,\n            value: t.value\n        };\n        if (this.ie) for (t = t.left; !t.et(); ) this.re.push(t), t = t.right; else for (t = t.right; !t.et(); ) this.re.push(t), \n        t = t.left;\n        return e;\n    }\n    ce() {\n        return this.re.length > 0;\n    }\n    ae() {\n        if (0 === this.re.length) return null;\n        const t = this.re[this.re.length - 1];\n        return {\n            key: t.key,\n            value: t.value\n        };\n    }\n}\n\n // end SortedMapIterator\n// Represents a node in a Left-leaning Red-Black tree.\nclass rn {\n    constructor(t, e, n, s, i) {\n        this.key = t, this.value = e, this.color = null != n ? n : rn.RED, this.left = null != s ? s : rn.EMPTY, \n        this.right = null != i ? i : rn.EMPTY, this.size = this.left.size + 1 + this.right.size;\n    }\n    // Returns a copy of the current node, optionally replacing pieces of it.\n    copy(t, e, n, s, i) {\n        return new rn(null != t ? t : this.key, null != e ? e : this.value, null != n ? n : this.color, null != s ? s : this.left, null != i ? i : this.right);\n    }\n    et() {\n        return !1;\n    }\n    // Traverses the tree in key order and calls the specified action function\n    // for each node. If action returns true, traversal is aborted.\n    // Returns the first truthy value returned by action, or the last falsey\n    // value returned by action.\n    Xt(t) {\n        return this.left.Xt(t) || t(this.key, this.value) || this.right.Xt(t);\n    }\n    // Traverses the tree in reverse key order and calls the specified action\n    // function for each node. If action returns true, traversal is aborted.\n    // Returns the first truthy value returned by action, or the last falsey\n    // value returned by action.\n    Zt(t) {\n        return this.right.Zt(t) || t(this.key, this.value) || this.left.Zt(t);\n    }\n    // Returns the minimum node in the tree.\n    min() {\n        return this.left.et() ? this : this.left.min();\n    }\n    // Returns the maximum key in the tree.\n    Jt() {\n        return this.min().key;\n    }\n    // Returns the maximum key in the tree.\n    Yt() {\n        return this.right.et() ? this.key : this.right.Yt();\n    }\n    // Returns new tree, with the key/value added.\n    zt(t, e, n) {\n        let s = this;\n        const i = n(t, s.key);\n        return s = i < 0 ? s.copy(null, null, null, s.left.zt(t, e, n), null) : 0 === i ? s.copy(null, e, null, null, null) : s.copy(null, null, null, null, s.right.zt(t, e, n)), \n        s.ue();\n    }\n    he() {\n        if (this.left.et()) return rn.EMPTY;\n        let t = this;\n        return t.left.le() || t.left.left.le() || (t = t._e()), t = t.copy(null, null, null, t.left.he(), null), \n        t.ue();\n    }\n    // Returns new tree, with the specified item removed.\n    remove(t, e) {\n        let n, s = this;\n        if (e(t, s.key) < 0) s.left.et() || s.left.le() || s.left.left.le() || (s = s._e()), \n        s = s.copy(null, null, null, s.left.remove(t, e), null); else {\n            if (s.left.le() && (s = s.fe()), s.right.et() || s.right.le() || s.right.left.le() || (s = s.de()), \n            0 === e(t, s.key)) {\n                if (s.right.et()) return rn.EMPTY;\n                n = s.right.min(), s = s.copy(n.key, n.value, null, null, s.right.he());\n            }\n            s = s.copy(null, null, null, null, s.right.remove(t, e));\n        }\n        return s.ue();\n    }\n    le() {\n        return this.color;\n    }\n    // Returns new tree after performing any needed rotations.\n    ue() {\n        let t = this;\n        return t.right.le() && !t.left.le() && (t = t.we()), t.left.le() && t.left.left.le() && (t = t.fe()), \n        t.left.le() && t.right.le() && (t = t.Ee()), t;\n    }\n    _e() {\n        let t = this.Ee();\n        return t.right.left.le() && (t = t.copy(null, null, null, null, t.right.fe()), t = t.we(), \n        t = t.Ee()), t;\n    }\n    de() {\n        let t = this.Ee();\n        return t.left.left.le() && (t = t.fe(), t = t.Ee()), t;\n    }\n    we() {\n        const t = this.copy(null, null, rn.RED, null, this.right.left);\n        return this.right.copy(null, null, this.color, t, null);\n    }\n    fe() {\n        const t = this.copy(null, null, rn.RED, this.left.right, null);\n        return this.left.copy(null, null, this.color, null, t);\n    }\n    Ee() {\n        const t = this.left.copy(null, null, !this.left.color, null, null), e = this.right.copy(null, null, !this.right.color, null, null);\n        return this.copy(null, null, !this.color, t, e);\n    }\n    // For testing.\n    Te() {\n        const t = this.Ie();\n        return Math.pow(2, t) <= this.size + 1;\n    }\n    // In a balanced RB tree, the black-depth (number of black nodes) from root to\n    // leaves is equal on both sides.  This function verifies that or asserts.\n    Ie() {\n        if (this.le() && this.left.le()) throw V();\n        if (this.right.le()) throw V();\n        const t = this.left.Ie();\n        if (t !== this.right.Ie()) throw V();\n        return t + (this.le() ? 0 : 1);\n    }\n}\n\n // end LLRBNode\n// Empty node is shared between all LLRB trees.\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nrn.EMPTY = null, rn.RED = !0, rn.Ht = !1;\n\n// end LLRBEmptyNode\nrn.EMPTY = new \n// Represents an empty node (a leaf node in the Red-Black Tree).\nclass {\n    constructor() {\n        this.size = 0;\n    }\n    get key() {\n        throw V();\n    }\n    get value() {\n        throw V();\n    }\n    get color() {\n        throw V();\n    }\n    get left() {\n        throw V();\n    }\n    get right() {\n        throw V();\n    }\n    // Returns a copy of the current node.\n    copy(t, e, n, s, i) {\n        return this;\n    }\n    // Returns a copy of the tree, with the specified key/value added.\n    zt(t, e, n) {\n        return new rn(t, e);\n    }\n    // Returns a copy of the tree, with the specified key removed.\n    remove(t, e) {\n        return this;\n    }\n    et() {\n        return !0;\n    }\n    Xt(t) {\n        return !1;\n    }\n    Zt(t) {\n        return !1;\n    }\n    Jt() {\n        return null;\n    }\n    Yt() {\n        return null;\n    }\n    le() {\n        return !1;\n    }\n    // For testing.\n    Te() {\n        return !0;\n    }\n    Ie() {\n        return 0;\n    }\n};\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * SortedSet is an immutable (copy-on-write) collection that holds elements\n * in order specified by the provided comparator.\n *\n * NOTE: if provided comparator returns 0 for two elements, we consider them to\n * be equal!\n */\nclass on {\n    constructor(t) {\n        this.H = t, this.data = new nn(this.H);\n    }\n    has(t) {\n        return null !== this.data.get(t);\n    }\n    first() {\n        return this.data.Jt();\n    }\n    last() {\n        return this.data.Yt();\n    }\n    get size() {\n        return this.data.size;\n    }\n    indexOf(t) {\n        return this.data.indexOf(t);\n    }\n    /** Iterates elements in order defined by \"comparator\" */    forEach(t) {\n        this.data.Xt(((e, n) => (t(e), !1)));\n    }\n    /** Iterates over `elem`s such that: range[0] &lt;= elem &lt; range[1]. */    me(t, e) {\n        const n = this.data.ee(t[0]);\n        for (;n.ce(); ) {\n            const s = n.oe();\n            if (this.H(s.key, t[1]) >= 0) return;\n            e(s.key);\n        }\n    }\n    /**\n     * Iterates over `elem`s such that: start &lt;= elem until false is returned.\n     */    Ae(t, e) {\n        let n;\n        for (n = void 0 !== e ? this.data.ee(e) : this.data.te(); n.ce(); ) {\n            if (!t(n.oe().key)) return;\n        }\n    }\n    /** Finds the least element greater than or equal to `elem`. */    Re(t) {\n        const e = this.data.ee(t);\n        return e.ce() ? e.oe().key : null;\n    }\n    te() {\n        return new cn(this.data.te());\n    }\n    ee(t) {\n        return new cn(this.data.ee(t));\n    }\n    /** Inserts or updates an element */    add(t) {\n        return this.copy(this.data.remove(t).zt(t, !0));\n    }\n    /** Deletes an element */    delete(t) {\n        return this.has(t) ? this.copy(this.data.remove(t)) : this;\n    }\n    et() {\n        return this.data.et();\n    }\n    Pe(t) {\n        let e = this;\n        // Make sure `result` always refers to the larger one of the two sets.\n                return e.size < t.size && (e = t, t = this), t.forEach((t => {\n            e = e.add(t);\n        })), e;\n    }\n    isEqual(t) {\n        if (!(t instanceof on)) return !1;\n        if (this.size !== t.size) return !1;\n        const e = this.data.te(), n = t.data.te();\n        for (;e.ce(); ) {\n            const t = e.oe().key, s = n.oe().key;\n            if (0 !== this.H(t, s)) return !1;\n        }\n        return !0;\n    }\n    it() {\n        const t = [];\n        return this.forEach((e => {\n            t.push(e);\n        })), t;\n    }\n    toString() {\n        const t = [];\n        return this.forEach((e => t.push(e))), \"SortedSet(\" + t.toString() + \")\";\n    }\n    copy(t) {\n        const e = new on(this.H);\n        return e.data = t, e;\n    }\n}\n\nclass cn {\n    constructor(t) {\n        this.ye = t;\n    }\n    oe() {\n        return this.ye.oe().key;\n    }\n    ce() {\n        return this.ye.ce();\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ const an = new nn(J.H);\n\nfunction un() {\n    return an;\n}\n\nfunction hn() {\n    return un();\n}\n\nconst ln = new nn(J.H);\n\nfunction _n() {\n    return ln;\n}\n\nconst fn = new nn(J.H);\n\nfunction dn() {\n    return fn;\n}\n\nconst wn = new on(J.H);\n\nfunction En(...t) {\n    let e = wn;\n    for (const n of t) e = e.add(n);\n    return e;\n}\n\nconst Tn = new on(D);\n\nfunction In() {\n    return Tn;\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * DocumentSet is an immutable (copy-on-write) collection that holds documents\n * in order specified by the provided comparator. We always add a document key\n * comparator on top of what is provided to guarantee document equality based on\n * the key.\n */ class mn {\n    /** The default ordering is by key if the comparator is omitted */\n    constructor(t) {\n        // We are adding document key comparator to the end as it's the only\n        // guaranteed unique property of a document.\n        this.H = t ? (e, n) => t(e, n) || J.H(e.key, n.key) : (t, e) => J.H(t.key, e.key), \n        this.ge = _n(), this.Ve = new nn(this.H);\n    }\n    /**\n     * Returns an empty copy of the existing DocumentSet, using the same\n     * comparator.\n     */    static pe(t) {\n        return new mn(t.H);\n    }\n    has(t) {\n        return null != this.ge.get(t);\n    }\n    get(t) {\n        return this.ge.get(t);\n    }\n    first() {\n        return this.Ve.Jt();\n    }\n    last() {\n        return this.Ve.Yt();\n    }\n    et() {\n        return this.Ve.et();\n    }\n    /**\n     * Returns the index of the provided key in the document set, or -1 if the\n     * document key is not present in the set;\n     */    indexOf(t) {\n        const e = this.ge.get(t);\n        return e ? this.Ve.indexOf(e) : -1;\n    }\n    get size() {\n        return this.Ve.size;\n    }\n    /** Iterates documents in order defined by \"comparator\" */    forEach(t) {\n        this.Ve.Xt(((e, n) => (t(e), !1)));\n    }\n    /** Inserts or updates a document with the same key */    add(t) {\n        // First remove the element if we have it.\n        const e = this.delete(t.key);\n        return e.copy(e.ge.zt(t.key, t), e.Ve.zt(t, null));\n    }\n    /** Deletes a document with a given key */    delete(t) {\n        const e = this.get(t);\n        return e ? this.copy(this.ge.remove(t), this.Ve.remove(e)) : this;\n    }\n    isEqual(t) {\n        if (!(t instanceof mn)) return !1;\n        if (this.size !== t.size) return !1;\n        const e = this.Ve.te(), n = t.Ve.te();\n        for (;e.ce(); ) {\n            const t = e.oe().key, s = n.oe().key;\n            if (!t.isEqual(s)) return !1;\n        }\n        return !0;\n    }\n    toString() {\n        const t = [];\n        return this.forEach((e => {\n            t.push(e.toString());\n        })), 0 === t.length ? \"DocumentSet ()\" : \"DocumentSet (\\n  \" + t.join(\"  \\n\") + \"\\n)\";\n    }\n    copy(t, e) {\n        const n = new mn;\n        return n.H = this.H, n.ge = t, n.Ve = e, n;\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * DocumentChangeSet keeps track of a set of changes to docs in a query, merging\n * duplicate events for the same doc.\n */ class An {\n    constructor() {\n        this.be = new nn(J.H);\n    }\n    track(t) {\n        const e = t.doc.key, n = this.be.get(e);\n        n ? \n        // Merge the new change with the existing change.\n        0 /* Added */ !== t.type && 3 /* Metadata */ === n.type ? this.be = this.be.zt(e, t) : 3 /* Metadata */ === t.type && 1 /* Removed */ !== n.type ? this.be = this.be.zt(e, {\n            type: n.type,\n            doc: t.doc\n        }) : 2 /* Modified */ === t.type && 2 /* Modified */ === n.type ? this.be = this.be.zt(e, {\n            type: 2 /* Modified */ ,\n            doc: t.doc\n        }) : 2 /* Modified */ === t.type && 0 /* Added */ === n.type ? this.be = this.be.zt(e, {\n            type: 0 /* Added */ ,\n            doc: t.doc\n        }) : 1 /* Removed */ === t.type && 0 /* Added */ === n.type ? this.be = this.be.remove(e) : 1 /* Removed */ === t.type && 2 /* Modified */ === n.type ? this.be = this.be.zt(e, {\n            type: 1 /* Removed */ ,\n            doc: n.doc\n        }) : 0 /* Added */ === t.type && 1 /* Removed */ === n.type ? this.be = this.be.zt(e, {\n            type: 2 /* Modified */ ,\n            doc: t.doc\n        }) : \n        // This includes these cases, which don't make sense:\n        // Added->Added\n        // Removed->Removed\n        // Modified->Added\n        // Removed->Modified\n        // Metadata->Added\n        // Removed->Metadata\n        V() : this.be = this.be.zt(e, t);\n    }\n    ve() {\n        const t = [];\n        return this.be.Xt(((e, n) => {\n            t.push(n);\n        })), t;\n    }\n}\n\nclass Rn {\n    constructor(t, e, n, s, i, r, o, c) {\n        this.query = t, this.docs = e, this.Se = n, this.docChanges = s, this.De = i, this.fromCache = r, \n        this.Ce = o, this.xe = c;\n    }\n    /** Returns a view snapshot as if all documents in the snapshot were added. */    static Ne(t, e, n, s) {\n        const i = [];\n        return e.forEach((t => {\n            i.push({\n                type: 0 /* Added */ ,\n                doc: t\n            });\n        })), new Rn(t, e, mn.pe(e), i, n, s, \n        /* syncStateChanged= */ !0, \n        /* excludesMetadataChanges= */ !1);\n    }\n    get hasPendingWrites() {\n        return !this.De.et();\n    }\n    isEqual(t) {\n        if (!(this.fromCache === t.fromCache && this.Ce === t.Ce && this.De.isEqual(t.De) && he(this.query, t.query) && this.docs.isEqual(t.docs) && this.Se.isEqual(t.Se))) return !1;\n        const e = this.docChanges, n = t.docChanges;\n        if (e.length !== n.length) return !1;\n        for (let t = 0; t < e.length; t++) if (e[t].type !== n[t].type || !e[t].doc.isEqual(n[t].doc)) return !1;\n        return !0;\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * An event from the RemoteStore. It is split into targetChanges (changes to the\n * state or the set of documents in our watched targets) and documentUpdates\n * (changes to the actual documents).\n */ class Pn {\n    constructor(\n    /**\n     * The snapshot version this event brings us up to, or MIN if not set.\n     */\n    t, \n    /**\n     * A map from target to changes to the target. See TargetChange.\n     */\n    e, \n    /**\n     * A set of targets that is known to be inconsistent. Listens for these\n     * targets should be re-established without resume tokens.\n     */\n    n, \n    /**\n     * A set of which documents have changed or been deleted, along with the\n     * doc's new values (if not deleted).\n     */\n    s, \n    /**\n     * A set of which document updates are due only to limbo resolution targets.\n     */\n    i) {\n        this.kt = t, this.Fe = e, this.Oe = n, this.ke = s, this.Me = i;\n    }\n    /**\n     * HACK: Views require RemoteEvents in order to determine whether the view is\n     * CURRENT, but secondary tabs don't receive remote events. So this method is\n     * used to create a synthesized RemoteEvent that can be used to apply a\n     * CURRENT status change to a View, for queries executed in a different tab.\n     */\n    // PORTING NOTE: Multi-tab only\n    static Le(t, e) {\n        const n = new Map;\n        return n.set(t, yn.$e(t, e)), new Pn(W.min(), n, In(), un(), En());\n    }\n}\n\n/**\n * A TargetChange specifies the set of changes for a specific target as part of\n * a RemoteEvent. These changes track which documents are added, modified or\n * removed, as well as the target's resume token and whether the target is\n * marked CURRENT.\n * The actual changes *to* documents are not part of the TargetChange since\n * documents may be part of multiple targets.\n */ class yn {\n    constructor(\n    /**\n     * An opaque, server-assigned token that allows watching a query to be resumed\n     * after disconnecting without retransmitting all the data that matches the\n     * query. The resume token essentially identifies a point in time from which\n     * the server should resume sending results.\n     */\n    t, \n    /**\n     * The \"current\" (synced) status of this target. Note that \"current\"\n     * has special meaning in the RPC protocol that implies that a target is\n     * both up-to-date and consistent with the rest of the watch stream.\n     */\n    e, \n    /**\n     * The set of documents that were newly assigned to this target as part of\n     * this remote event.\n     */\n    n, \n    /**\n     * The set of documents that were already assigned to this target but received\n     * an update during this remote event.\n     */\n    s, \n    /**\n     * The set of documents that were removed from this target as part of this\n     * remote event.\n     */\n    i) {\n        this.resumeToken = t, this.Be = e, this.qe = n, this.Ue = s, this.Qe = i;\n    }\n    /**\n     * This method is used to create a synthesized TargetChanges that can be used to\n     * apply a CURRENT status change to a View (for queries executed in a different\n     * tab) or for new queries (to raise snapshots with correct CURRENT status).\n     */    static $e(t, e) {\n        return new yn(N.T, e, En(), En(), En());\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Represents a changed document and a list of target ids to which this change\n * applies.\n *\n * If document has been deleted NoDocument will be provided.\n */ class gn {\n    constructor(\n    /** The new document applies to all of these targets. */\n    t, \n    /** The new document is removed from all of these targets. */\n    e, \n    /** The key of the document for this change. */\n    n, \n    /**\n     * The new document or NoDocument if it was deleted. Is null if the\n     * document went out of view without the server sending a new document.\n     */\n    s) {\n        this.Ke = t, this.removedTargetIds = e, this.key = n, this.We = s;\n    }\n}\n\nclass Vn {\n    constructor(t, e) {\n        this.targetId = t, this.je = e;\n    }\n}\n\nclass pn {\n    constructor(\n    /** What kind of change occurred to the watch target. */\n    t, \n    /** The target IDs that were added/removed/set. */\n    e, \n    /**\n     * An opaque, server-assigned token that allows watching a target to be\n     * resumed after disconnecting without retransmitting all the data that\n     * matches the target. The resume token essentially identifies a point in\n     * time from which the server should resume sending results.\n     */\n    n = N.T\n    /** An RPC error indicating why the watch failed. */ , s = null) {\n        this.state = t, this.targetIds = e, this.resumeToken = n, this.cause = s;\n    }\n}\n\n/** Tracks the internal state of a Watch target. */ class bn {\n    constructor() {\n        /**\n         * The number of pending responses (adds or removes) that we are waiting on.\n         * We only consider targets active that have no pending responses.\n         */\n        this.Ge = 0, \n        /**\n         * Keeps track of the document changes since the last raised snapshot.\n         *\n         * These changes are continuously updated as we receive document updates and\n         * always reflect the current set of changes against the last issued snapshot.\n         */\n        this.ze = Dn(), \n        /** See public getters for explanations of these fields. */\n        this.He = N.T, this.Je = !1, \n        /**\n         * Whether this target state should be included in the next snapshot. We\n         * initialize to true so that newly-added targets are included in the next\n         * RemoteEvent.\n         */\n        this.Ye = !0;\n    }\n    /**\n     * Whether this target has been marked 'current'.\n     *\n     * 'Current' has special meaning in the RPC protocol: It implies that the\n     * Watch backend has sent us all changes up to the point at which the target\n     * was added and that the target is consistent with the rest of the watch\n     * stream.\n     */    get Be() {\n        return this.Je;\n    }\n    /** The last resume token sent to us for this target. */    get resumeToken() {\n        return this.He;\n    }\n    /** Whether this target has pending target adds or target removes. */    get Xe() {\n        return 0 !== this.Ge;\n    }\n    /** Whether we have modified any state that should trigger a snapshot. */    get Ze() {\n        return this.Ye;\n    }\n    /**\n     * Applies the resume token to the TargetChange, but only when it has a new\n     * value. Empty resumeTokens are discarded.\n     */    tn(t) {\n        t.l() > 0 && (this.Ye = !0, this.He = t);\n    }\n    /**\n     * Creates a target change from the current set of changes.\n     *\n     * To reset the document changes after raising this snapshot, call\n     * `clearPendingChanges()`.\n     */    en() {\n        let t = En(), e = En(), n = En();\n        return this.ze.forEach(((s, i) => {\n            switch (i) {\n              case 0 /* Added */ :\n                t = t.add(s);\n                break;\n\n              case 2 /* Modified */ :\n                e = e.add(s);\n                break;\n\n              case 1 /* Removed */ :\n                n = n.add(s);\n                break;\n\n              default:\n                V();\n            }\n        })), new yn(this.He, this.Je, t, e, n);\n    }\n    /**\n     * Resets the document changes and sets `hasPendingChanges` to false.\n     */    nn() {\n        this.Ye = !1, this.ze = Dn();\n    }\n    sn(t, e) {\n        this.Ye = !0, this.ze = this.ze.zt(t, e);\n    }\n    rn(t) {\n        this.Ye = !0, this.ze = this.ze.remove(t);\n    }\n    on() {\n        this.Ge += 1;\n    }\n    cn() {\n        this.Ge -= 1;\n    }\n    an() {\n        this.Ye = !0, this.Je = !0;\n    }\n}\n\n/**\n * A helper class to accumulate watch changes into a RemoteEvent.\n */\nclass vn {\n    constructor(t) {\n        this.un = t, \n        /** The internal state of all tracked targets. */\n        this.hn = new Map, \n        /** Keeps track of the documents to update since the last raised snapshot. */\n        this.ln = un(), \n        /** A mapping of document keys to their set of target IDs. */\n        this._n = Sn(), \n        /**\n         * A list of targets with existence filter mismatches. These targets are\n         * known to be inconsistent and their listens needs to be re-established by\n         * RemoteStore.\n         */\n        this.fn = new on(D);\n    }\n    /**\n     * Processes and adds the DocumentWatchChange to the current set of changes.\n     */    dn(t) {\n        for (const e of t.Ke) t.We instanceof vt ? this.wn(e, t.We) : t.We instanceof St && this.En(e, t.key, t.We);\n        for (const e of t.removedTargetIds) this.En(e, t.key, t.We);\n    }\n    /** Processes and adds the WatchTargetChange to the current set of changes. */    Tn(t) {\n        this.In(t, (e => {\n            const n = this.mn(e);\n            switch (t.state) {\n              case 0 /* NoChange */ :\n                this.An(e) && n.tn(t.resumeToken);\n                break;\n\n              case 1 /* Added */ :\n                // We need to decrement the number of pending acks needed from watch\n                // for this targetId.\n                n.cn(), n.Xe || \n                // We have a freshly added target, so we need to reset any state\n                // that we had previously. This can happen e.g. when remove and add\n                // back a target for existence filter mismatches.\n                n.nn(), n.tn(t.resumeToken);\n                break;\n\n              case 2 /* Removed */ :\n                // We need to keep track of removed targets to we can post-filter and\n                // remove any target changes.\n                // We need to decrement the number of pending acks needed from watch\n                // for this targetId.\n                n.cn(), n.Xe || this.removeTarget(e);\n                break;\n\n              case 3 /* Current */ :\n                this.An(e) && (n.an(), n.tn(t.resumeToken));\n                break;\n\n              case 4 /* Reset */ :\n                this.An(e) && (\n                // Reset the target and synthesizes removes for all existing\n                // documents. The backend will re-add any documents that still\n                // match the target before it sends the next global snapshot.\n                this.Rn(e), n.tn(t.resumeToken));\n                break;\n\n              default:\n                V();\n            }\n        }));\n    }\n    /**\n     * Iterates over all targetIds that the watch change applies to: either the\n     * targetIds explicitly listed in the change or the targetIds of all currently\n     * active targets.\n     */    In(t, e) {\n        t.targetIds.length > 0 ? t.targetIds.forEach(e) : this.hn.forEach(((t, n) => {\n            this.An(n) && e(n);\n        }));\n    }\n    /**\n     * Handles existence filters and synthesizes deletes for filter mismatches.\n     * Targets that are invalidated by filter mismatches are added to\n     * `pendingTargetResets`.\n     */    Pn(t) {\n        const e = t.targetId, n = t.je.count, s = this.yn(e);\n        if (s) {\n            const t = s.target;\n            if (kt(t)) if (0 === n) {\n                // The existence filter told us the document does not exist. We deduce\n                // that this document does not exist and apply a deleted document to\n                // our updates. Without applying this deleted document there might be\n                // another query that will raise this document as part of a snapshot\n                // until it is resolved, essentially exposing inconsistency between\n                // queries.\n                const n = new J(t.path);\n                this.En(e, n, new St(n, W.min()));\n            } else p(1 === n); else {\n                this.gn(e) !== n && (\n                // Existence filter mismatch: We reset the mapping and raise a new\n                // snapshot with `isFromCache:true`.\n                this.Rn(e), this.fn = this.fn.add(e));\n            }\n        }\n    }\n    /**\n     * Converts the currently accumulated state into a remote event at the\n     * provided snapshot version. Resets the accumulated changes before returning.\n     */    Vn(t) {\n        const e = new Map;\n        this.hn.forEach(((n, s) => {\n            const i = this.yn(s);\n            if (i) {\n                if (n.Be && kt(i.target)) {\n                    // Document queries for document that don't exist can produce an empty\n                    // result set. To update our local cache, we synthesize a document\n                    // delete if we have not previously received the document. This\n                    // resolves the limbo state of the document, removing it from\n                    // limboDocumentRefs.\n                    // TODO(dimond): Ideally we would have an explicit lookup target\n                    // instead resulting in an explicit delete message and we could\n                    // remove this special logic.\n                    const e = new J(i.target.path);\n                    null !== this.ln.get(e) || this.pn(s, e) || this.En(s, e, new St(e, t));\n                }\n                n.Ze && (e.set(s, n.en()), n.nn());\n            }\n        }));\n        let n = En();\n        // We extract the set of limbo-only document updates as the GC logic\n        // special-cases documents that do not appear in the target cache.\n        \n        // TODO(gsoltis): Expand on this comment once GC is available in the JS\n        // client.\n                this._n.forEach(((t, e) => {\n            let s = !0;\n            e.Ae((t => {\n                const e = this.yn(t);\n                return !e || 2 /* LimboResolution */ === e.Ot || (s = !1, !1);\n            })), s && (n = n.add(t));\n        }));\n        const s = new Pn(t, e, this.fn, this.ln, n);\n        return this.ln = un(), this._n = Sn(), this.fn = new on(D), s;\n    }\n    /**\n     * Adds the provided document to the internal list of document updates and\n     * its document key to the given target's mapping.\n     */\n    // Visible for testing.\n    wn(t, e) {\n        if (!this.An(t)) return;\n        const n = this.pn(t, e.key) ? 2 /* Modified */ : 0 /* Added */;\n        this.mn(t).sn(e.key, n), this.ln = this.ln.zt(e.key, e), this._n = this._n.zt(e.key, this.bn(e.key).add(t));\n    }\n    /**\n     * Removes the provided document from the target mapping. If the\n     * document no longer matches the target, but the document's state is still\n     * known (e.g. we know that the document was deleted or we received the change\n     * that caused the filter mismatch), the new document can be provided\n     * to update the remote document cache.\n     */\n    // Visible for testing.\n    En(t, e, n) {\n        if (!this.An(t)) return;\n        const s = this.mn(t);\n        this.pn(t, e) ? s.sn(e, 1 /* Removed */) : \n        // The document may have entered and left the target before we raised a\n        // snapshot, so we can just ignore the change.\n        s.rn(e), this._n = this._n.zt(e, this.bn(e).delete(t)), n && (this.ln = this.ln.zt(e, n));\n    }\n    removeTarget(t) {\n        this.hn.delete(t);\n    }\n    /**\n     * Returns the current count of documents in the target. This includes both\n     * the number of documents that the LocalStore considers to be part of the\n     * target as well as any accumulated changes.\n     */    gn(t) {\n        const e = this.mn(t).en();\n        return this.un.vn(t).size + e.qe.size - e.Qe.size;\n    }\n    /**\n     * Increment the number of acks needed from watch before we can consider the\n     * server to be 'in-sync' with the client's active targets.\n     */    on(t) {\n        this.mn(t).on();\n    }\n    mn(t) {\n        let e = this.hn.get(t);\n        return e || (e = new bn, this.hn.set(t, e)), e;\n    }\n    bn(t) {\n        let e = this._n.get(t);\n        return e || (e = new on(D), this._n = this._n.zt(t, e)), e;\n    }\n    /**\n     * Verifies that the user is still interested in this target (by calling\n     * `getTargetDataForTarget()`) and that we are not waiting for pending ADDs\n     * from watch.\n     */    An(t) {\n        const e = null !== this.yn(t);\n        return e || R(\"WatchChangeAggregator\", \"Detected inactive target\", t), e;\n    }\n    /**\n     * Returns the TargetData for an active target (i.e. a target that the user\n     * is still interested in that has no outstanding target change requests).\n     */    yn(t) {\n        const e = this.hn.get(t);\n        return e && e.Xe ? null : this.un.Sn(t);\n    }\n    /**\n     * Resets the state of a Watch target to its initial state (e.g. sets\n     * 'current' to false, clears the resume token and removes its target mapping\n     * from all documents).\n     */    Rn(t) {\n        this.hn.set(t, new bn);\n        this.un.vn(t).forEach((e => {\n            this.En(t, e, /*updatedDocument=*/ null);\n        }));\n    }\n    /**\n     * Returns whether the LocalStore considers the document to be part of the\n     * specified target.\n     */    pn(t, e) {\n        return this.un.vn(t).has(e);\n    }\n}\n\nfunction Sn() {\n    return new nn(J.H);\n}\n\nfunction Dn() {\n    return new nn(J.H);\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ const Cn = (() => {\n    const t = {\n        asc: \"ASCENDING\",\n        desc: \"DESCENDING\"\n    };\n    return t;\n})(), xn = (() => {\n    const t = {\n        \"<\": \"LESS_THAN\",\n        \"<=\": \"LESS_THAN_OR_EQUAL\",\n        \">\": \"GREATER_THAN\",\n        \">=\": \"GREATER_THAN_OR_EQUAL\",\n        \"==\": \"EQUAL\",\n        \"!=\": \"NOT_EQUAL\",\n        \"array-contains\": \"ARRAY_CONTAINS\",\n        in: \"IN\",\n        \"not-in\": \"NOT_IN\",\n        \"array-contains-any\": \"ARRAY_CONTAINS_ANY\"\n    };\n    return t;\n})();\n\n/**\n * This class generates JsonObject values for the Datastore API suitable for\n * sending to either GRPC stub methods or via the JSON/HTTP REST API.\n *\n * The serializer supports both Protobuf.js and Proto3 JSON formats. By\n * setting `useProto3Json` to true, the serializer will use the Proto3 JSON\n * format.\n *\n * For a description of the Proto3 JSON format check\n * https://developers.google.com/protocol-buffers/docs/proto3#json\n *\n * TODO(klimt): We can remove the databaseId argument if we keep the full\n * resource name in documents.\n */\nclass Nn {\n    constructor(t, e) {\n        this.t = t, this.Bt = e;\n    }\n}\n\n/**\n * Returns a value for a Date that's appropriate to put into a proto.\n */\nfunction Fn(t, e) {\n    if (t.Bt) {\n        return `${new Date(1e3 * e.seconds).toISOString().replace(/\\.\\d*/, \"\").replace(\"Z\", \"\")}.${(\"000000000\" + e.nanoseconds).slice(-9)}Z`;\n    }\n    return {\n        seconds: \"\" + e.seconds,\n        nanos: e.nanoseconds\n    };\n}\n\n/**\n * Returns a value for bytes that's appropriate to put in a proto.\n *\n * Visible for testing.\n */\nfunction On(t, e) {\n    return t.Bt ? e.toBase64() : e.toUint8Array();\n}\n\n/**\n * Returns a ByteString based on the proto string value.\n */ function kn(t, e) {\n    return Fn(t, e.j());\n}\n\nfunction Mn(t) {\n    return p(!!t), W.K(function(t) {\n        const e = nt(t);\n        return new K(e.seconds, e.nanos);\n    }(t));\n}\n\nfunction Ln(t, e) {\n    return function(t) {\n        return new G([ \"projects\", t.projectId, \"databases\", t.database ]);\n    }(t).child(\"documents\").child(e).rt();\n}\n\nfunction $n(t) {\n    const e = G.ot(t);\n    return p(fs(e)), e;\n}\n\nfunction Bn(t, e) {\n    return Ln(t.t, e.path);\n}\n\nfunction qn(t, e) {\n    const n = $n(e);\n    if (n.get(1) !== t.t.projectId) throw new O(F.INVALID_ARGUMENT, \"Tried to deserialize key from different project: \" + n.get(1) + \" vs \" + t.t.projectId);\n    if (n.get(3) !== t.t.database) throw new O(F.INVALID_ARGUMENT, \"Tried to deserialize key from different database: \" + n.get(3) + \" vs \" + t.t.database);\n    return new J(Wn(n));\n}\n\nfunction Un(t, e) {\n    return Ln(t.t, e);\n}\n\nfunction Qn(t) {\n    const e = $n(t);\n    // In v1beta1 queries for collections at the root did not have a trailing\n    // \"/documents\". In v1 all resource paths contain \"/documents\". Preserve the\n    // ability to read the v1beta1 form for compatibility with queries persisted\n    // in the local target cache.\n        return 4 === e.length ? G.ct() : Wn(e);\n}\n\nfunction Kn(t) {\n    return new G([ \"projects\", t.t.projectId, \"databases\", t.t.database ]).rt();\n}\n\nfunction Wn(t) {\n    return p(t.length > 4 && \"documents\" === t.get(4)), t.Y(5);\n}\n\n/** Creates a Document proto from key and fields (but no create/update time) */ function jn(t, e, n) {\n    return {\n        name: Bn(t, e),\n        fields: n.proto.mapValue.fields\n    };\n}\n\nfunction Gn(t, e, n) {\n    const s = qn(t, e.name), i = Mn(e.updateTime), r = new gt({\n        mapValue: {\n            fields: e.fields\n        }\n    });\n    return new vt(s, i, r, {\n        hasCommittedMutations: !!n\n    });\n}\n\nfunction zn(t, e) {\n    return \"found\" in e ? function(t, e) {\n        p(!!e.found), e.found.name, e.found.updateTime;\n        const n = qn(t, e.found.name), s = Mn(e.found.updateTime), i = new gt({\n            mapValue: {\n                fields: e.found.fields\n            }\n        });\n        return new vt(n, s, i, {});\n    }(t, e) : \"missing\" in e ? function(t, e) {\n        p(!!e.missing), p(!!e.readTime);\n        const n = qn(t, e.missing), s = Mn(e.readTime);\n        return new St(n, s);\n    }(t, e) : V();\n}\n\nfunction Hn(t, e) {\n    let n;\n    if (\"targetChange\" in e) {\n        e.targetChange;\n        // proto3 default value is unset in JSON (undefined), so use 'NO_CHANGE'\n        // if unset\n        const s = function(t) {\n            return \"NO_CHANGE\" === t ? 0 /* NoChange */ : \"ADD\" === t ? 1 /* Added */ : \"REMOVE\" === t ? 2 /* Removed */ : \"CURRENT\" === t ? 3 /* Current */ : \"RESET\" === t ? 4 /* Reset */ : V();\n        }(e.targetChange.targetChangeType || \"NO_CHANGE\"), i = e.targetChange.targetIds || [], r = function(t, e) {\n            return t.Bt ? (p(void 0 === e || \"string\" == typeof e), N.fromBase64String(e || \"\")) : (p(void 0 === e || e instanceof Uint8Array), \n            N.fromUint8Array(e || new Uint8Array));\n        }(t, e.targetChange.resumeToken), o = e.targetChange.cause, c = o && function(t) {\n            const e = void 0 === t.code ? F.UNKNOWN : en(t.code);\n            return new O(e, t.message || \"\");\n        }\n        /**\n * Returns a value for a number (or null) that's appropriate to put into\n * a google.protobuf.Int32Value proto.\n * DO NOT USE THIS FOR ANYTHING ELSE.\n * This method cheats. It's typed as returning \"number\" because that's what\n * our generated proto interfaces say Int32Value must be. But GRPC actually\n * expects a { value: <number> } struct.\n */ (o);\n        n = new pn(s, i, r, c || null);\n    } else if (\"documentChange\" in e) {\n        e.documentChange;\n        const s = e.documentChange;\n        s.document, s.document.name, s.document.updateTime;\n        const i = qn(t, s.document.name), r = Mn(s.document.updateTime), o = new gt({\n            mapValue: {\n                fields: s.document.fields\n            }\n        }), c = new vt(i, r, o, {}), a = s.targetIds || [], u = s.removedTargetIds || [];\n        n = new gn(a, u, c.key, c);\n    } else if (\"documentDelete\" in e) {\n        e.documentDelete;\n        const s = e.documentDelete;\n        s.document;\n        const i = qn(t, s.document), r = s.readTime ? Mn(s.readTime) : W.min(), o = new St(i, r), c = s.removedTargetIds || [];\n        n = new gn([], c, o.key, o);\n    } else if (\"documentRemove\" in e) {\n        e.documentRemove;\n        const s = e.documentRemove;\n        s.document;\n        const i = qn(t, s.document), r = s.removedTargetIds || [];\n        n = new gn([], r, i, null);\n    } else {\n        if (!(\"filter\" in e)) return V();\n        {\n            e.filter;\n            const t = e.filter;\n            t.targetId;\n            const s = t.count || 0, i = new Ye(s), r = t.targetId;\n            n = new Vn(r, i);\n        }\n    }\n    return n;\n}\n\nfunction Jn(t, e) {\n    let n;\n    if (e instanceof Qe) n = {\n        update: jn(t, e.key, e.value)\n    }; else if (e instanceof He) n = {\n        delete: Bn(t, e.key)\n    }; else if (e instanceof Ke) n = {\n        update: jn(t, e.key, e.data),\n        updateMask: _s(e.Gt)\n    }; else {\n        if (!(e instanceof Je)) return V();\n        n = {\n            verify: Bn(t, e.key)\n        };\n    }\n    return e.fieldTransforms.length > 0 && (n.updateTransforms = e.fieldTransforms.map((t => function(t, e) {\n        const n = e.transform;\n        if (n instanceof ge) return {\n            fieldPath: e.field.rt(),\n            setToServerValue: \"REQUEST_TIME\"\n        };\n        if (n instanceof Ve) return {\n            fieldPath: e.field.rt(),\n            appendMissingElements: {\n                values: n.elements\n            }\n        };\n        if (n instanceof be) return {\n            fieldPath: e.field.rt(),\n            removeAllFromArray: {\n                values: n.elements\n            }\n        };\n        if (n instanceof Se) return {\n            fieldPath: e.field.rt(),\n            increment: n.Ut\n        };\n        throw V();\n    }(0, t)))), e.jt.Wt || (n.currentDocument = function(t, e) {\n        return void 0 !== e.updateTime ? {\n            updateTime: kn(t, e.updateTime)\n        } : void 0 !== e.exists ? {\n            exists: e.exists\n        } : V();\n    }(t, e.jt)), n;\n}\n\nfunction Yn(t, e) {\n    const n = e.currentDocument ? function(t) {\n        return void 0 !== t.updateTime ? Oe.updateTime(Mn(t.updateTime)) : void 0 !== t.exists ? Oe.exists(t.exists) : Oe.Kt();\n    }(e.currentDocument) : Oe.Kt(), s = e.updateTransforms ? e.updateTransforms.map((e => function(t, e) {\n        let n = null;\n        if (\"setToServerValue\" in e) p(\"REQUEST_TIME\" === e.setToServerValue), n = new ge; else if (\"appendMissingElements\" in e) {\n            const t = e.appendMissingElements.values || [];\n            n = new Ve(t);\n        } else if (\"removeAllFromArray\" in e) {\n            const t = e.removeAllFromArray.values || [];\n            n = new be(t);\n        } else \"increment\" in e ? n = new Se(t, e.increment) : V();\n        const s = H.lt(e.fieldPath);\n        return new xe(s, n);\n    }(t, e))) : [];\n    if (e.update) {\n        e.update.name;\n        const i = qn(t, e.update.name), r = new gt({\n            mapValue: {\n                fields: e.update.fields\n            }\n        });\n        if (e.updateMask) {\n            const t = function(t) {\n                const e = t.fieldPaths || [];\n                return new tt(e.map((t => H.lt(t))));\n            }(e.updateMask);\n            return new Ke(i, r, t, n, s);\n        }\n        return new Qe(i, r, n, s);\n    }\n    if (e.delete) {\n        const s = qn(t, e.delete);\n        return new He(s, n);\n    }\n    if (e.verify) {\n        const s = qn(t, e.verify);\n        return new Je(s, n);\n    }\n    return V();\n}\n\nfunction Xn(t, e) {\n    return t && t.length > 0 ? (p(void 0 !== e), t.map((t => function(t, e) {\n        // NOTE: Deletes don't have an updateTime.\n        let n = t.updateTime ? Mn(t.updateTime) : Mn(e);\n        n.isEqual(W.min()) && (\n        // The Firestore Emulator currently returns an update time of 0 for\n        // deletes of non-existing documents (rather than null). This breaks the\n        // test \"get deleted doc while offline with source=cache\" as NoDocuments\n        // with version 0 are filtered by IndexedDb's RemoteDocumentCache.\n        // TODO(#2149): Remove this when Emulator is fixed\n        n = Mn(e));\n        let s = null;\n        return t.transformResults && t.transformResults.length > 0 && (s = t.transformResults), \n        new Fe(n, s);\n    }(t, e)))) : [];\n}\n\nfunction Zn(t, e) {\n    return {\n        documents: [ Un(t, e.path) ]\n    };\n}\n\nfunction ts(t, e) {\n    // Dissect the path into parent, collectionId, and optional key filter.\n    const n = {\n        structuredQuery: {}\n    }, s = e.path;\n    null !== e.collectionGroup ? (n.parent = Un(t, s), n.structuredQuery.from = [ {\n        collectionId: e.collectionGroup,\n        allDescendants: !0\n    } ]) : (n.parent = Un(t, s.X()), n.structuredQuery.from = [ {\n        collectionId: s.tt()\n    } ]);\n    const i = function(t) {\n        if (0 === t.length) return;\n        const e = t.map((t => \n        // visible for testing\n        function(t) {\n            if (\"==\" /* EQUAL */ === t.op) {\n                if (Pt(t.value)) return {\n                    unaryFilter: {\n                        field: as(t.field),\n                        op: \"IS_NAN\"\n                    }\n                };\n                if (Rt(t.value)) return {\n                    unaryFilter: {\n                        field: as(t.field),\n                        op: \"IS_NULL\"\n                    }\n                };\n            } else if (\"!=\" /* NOT_EQUAL */ === t.op) {\n                if (Pt(t.value)) return {\n                    unaryFilter: {\n                        field: as(t.field),\n                        op: \"IS_NOT_NAN\"\n                    }\n                };\n                if (Rt(t.value)) return {\n                    unaryFilter: {\n                        field: as(t.field),\n                        op: \"IS_NOT_NULL\"\n                    }\n                };\n            }\n            return {\n                fieldFilter: {\n                    field: as(t.field),\n                    op: cs(t.op),\n                    value: t.value\n                }\n            };\n        }(t)));\n        if (1 === e.length) return e[0];\n        return {\n            compositeFilter: {\n                op: \"AND\",\n                filters: e\n            }\n        };\n    }(e.filters);\n    i && (n.structuredQuery.where = i);\n    const r = function(t) {\n        if (0 === t.length) return;\n        return t.map((t => \n        // visible for testing\n        function(t) {\n            return {\n                field: as(t.field),\n                direction: os(t.dir)\n            };\n        }(t)));\n    }(e.orderBy);\n    r && (n.structuredQuery.orderBy = r);\n    const o = function(t, e) {\n        return t.Bt || at(e) ? e : {\n            value: e\n        };\n    }\n    /**\n * Returns a number (or null) from a google.protobuf.Int32Value proto.\n */ (t, e.limit);\n    return null !== o && (n.structuredQuery.limit = o), e.startAt && (n.structuredQuery.startAt = is(e.startAt)), \n    e.endAt && (n.structuredQuery.endAt = is(e.endAt)), n;\n}\n\nfunction es(t) {\n    let e = Qn(t.parent);\n    const n = t.structuredQuery, s = n.from ? n.from.length : 0;\n    let i = null;\n    if (s > 0) {\n        p(1 === s);\n        const t = n.from[0];\n        t.allDescendants ? i = t.collectionId : e = e.child(t.collectionId);\n    }\n    let r = [];\n    n.where && (r = ss(n.where));\n    let o = [];\n    n.orderBy && (o = n.orderBy.map((t => function(t) {\n        return new Ht(us(t.field), \n        // visible for testing\n        function(t) {\n            switch (t) {\n              case \"ASCENDING\":\n                return \"asc\" /* ASCENDING */;\n\n              case \"DESCENDING\":\n                return \"desc\" /* DESCENDING */;\n\n              default:\n                return;\n            }\n        }\n        // visible for testing\n        (t.direction));\n    }(t))));\n    let c = null;\n    n.limit && (c = function(t) {\n        let e;\n        return e = \"object\" == typeof t ? t.value : t, at(e) ? null : e;\n    }(n.limit));\n    let a = null;\n    n.startAt && (a = rs(n.startAt));\n    let u = null;\n    return n.endAt && (u = rs(n.endAt)), te(e, i, o, r, c, \"F\" /* First */ , a, u);\n}\n\nfunction ns(t, e) {\n    const n = function(t, e) {\n        switch (e) {\n          case 0 /* Listen */ :\n            return null;\n\n          case 1 /* ExistenceFilterMismatch */ :\n            return \"existence-filter-mismatch\";\n\n          case 2 /* LimboResolution */ :\n            return \"limbo-document\";\n\n          default:\n            return V();\n        }\n    }(0, e.Ot);\n    return null == n ? null : {\n        \"goog-listen-tags\": n\n    };\n}\n\nfunction ss(t) {\n    return t ? void 0 !== t.unaryFilter ? [ ls(t) ] : void 0 !== t.fieldFilter ? [ hs(t) ] : void 0 !== t.compositeFilter ? t.compositeFilter.filters.map((t => ss(t))).reduce(((t, e) => t.concat(e))) : V() : [];\n}\n\nfunction is(t) {\n    return {\n        before: t.before,\n        values: t.position\n    };\n}\n\nfunction rs(t) {\n    const e = !!t.before, n = t.values || [];\n    return new Gt(n, e);\n}\n\n// visible for testing\nfunction os(t) {\n    return Cn[t];\n}\n\nfunction cs(t) {\n    return xn[t];\n}\n\nfunction as(t) {\n    return {\n        fieldPath: t.rt()\n    };\n}\n\nfunction us(t) {\n    return H.lt(t.fieldPath);\n}\n\nfunction hs(t) {\n    return Mt.create(us(t.fieldFilter.field), function(t) {\n        switch (t) {\n          case \"EQUAL\":\n            return \"==\" /* EQUAL */;\n\n          case \"NOT_EQUAL\":\n            return \"!=\" /* NOT_EQUAL */;\n\n          case \"GREATER_THAN\":\n            return \">\" /* GREATER_THAN */;\n\n          case \"GREATER_THAN_OR_EQUAL\":\n            return \">=\" /* GREATER_THAN_OR_EQUAL */;\n\n          case \"LESS_THAN\":\n            return \"<\" /* LESS_THAN */;\n\n          case \"LESS_THAN_OR_EQUAL\":\n            return \"<=\" /* LESS_THAN_OR_EQUAL */;\n\n          case \"ARRAY_CONTAINS\":\n            return \"array-contains\" /* ARRAY_CONTAINS */;\n\n          case \"IN\":\n            return \"in\" /* IN */;\n\n          case \"NOT_IN\":\n            return \"not-in\" /* NOT_IN */;\n\n          case \"ARRAY_CONTAINS_ANY\":\n            return \"array-contains-any\" /* ARRAY_CONTAINS_ANY */;\n\n          case \"OPERATOR_UNSPECIFIED\":\n          default:\n            return V();\n        }\n    }(t.fieldFilter.op), t.fieldFilter.value);\n}\n\nfunction ls(t) {\n    switch (t.unaryFilter.op) {\n      case \"IS_NAN\":\n        const e = us(t.unaryFilter.field);\n        return Mt.create(e, \"==\" /* EQUAL */ , {\n            doubleValue: NaN\n        });\n\n      case \"IS_NULL\":\n        const n = us(t.unaryFilter.field);\n        return Mt.create(n, \"==\" /* EQUAL */ , {\n            nullValue: \"NULL_VALUE\"\n        });\n\n      case \"IS_NOT_NAN\":\n        const s = us(t.unaryFilter.field);\n        return Mt.create(s, \"!=\" /* NOT_EQUAL */ , {\n            doubleValue: NaN\n        });\n\n      case \"IS_NOT_NULL\":\n        const i = us(t.unaryFilter.field);\n        return Mt.create(i, \"!=\" /* NOT_EQUAL */ , {\n            nullValue: \"NULL_VALUE\"\n        });\n\n      case \"OPERATOR_UNSPECIFIED\":\n      default:\n        return V();\n    }\n}\n\nfunction _s(t) {\n    const e = [];\n    return t.fields.forEach((t => e.push(t.rt()))), {\n        fieldPaths: e\n    };\n}\n\nfunction fs(t) {\n    // Resource names have at least 4 components (project ID, database ID)\n    return t.length >= 4 && \"projects\" === t.get(0) && \"databases\" === t.get(2);\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ class ds {\n    constructor() {\n        this.promise = new Promise(((t, e) => {\n            this.resolve = t, this.reject = e;\n        }));\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * PersistencePromise is essentially a re-implementation of Promise except\n * it has a .next() method instead of .then() and .next() and .catch() callbacks\n * are executed synchronously when a PersistencePromise resolves rather than\n * asynchronously (Promise implementations use setImmediate() or similar).\n *\n * This is necessary to interoperate with IndexedDB which will automatically\n * commit transactions if control is returned to the event loop without\n * synchronously initiating another operation on the transaction.\n *\n * NOTE: .then() and .catch() only allow a single consumer, unlike normal\n * Promises.\n */ class ws {\n    constructor(t) {\n        // NOTE: next/catchCallback will always point to our own wrapper functions,\n        // not the user's raw next() or catch() callbacks.\n        this.Dn = null, this.Cn = null, \n        // When the operation resolves, we'll set result or error and mark isDone.\n        this.result = void 0, this.error = void 0, this.xn = !1, \n        // Set to true when .then() or .catch() are called and prevents additional\n        // chaining.\n        this.Nn = !1, t((t => {\n            this.xn = !0, this.result = t, this.Dn && \n            // value should be defined unless T is Void, but we can't express\n            // that in the type system.\n            this.Dn(t);\n        }), (t => {\n            this.xn = !0, this.error = t, this.Cn && this.Cn(t);\n        }));\n    }\n    catch(t) {\n        return this.next(void 0, t);\n    }\n    next(t, e) {\n        return this.Nn && V(), this.Nn = !0, this.xn ? this.error ? this.Fn(e, this.error) : this.On(t, this.result) : new ws(((n, s) => {\n            this.Dn = e => {\n                this.On(t, e).next(n, s);\n            }, this.Cn = t => {\n                this.Fn(e, t).next(n, s);\n            };\n        }));\n    }\n    kn() {\n        return new Promise(((t, e) => {\n            this.next(t, e);\n        }));\n    }\n    Mn(t) {\n        try {\n            const e = t();\n            return e instanceof ws ? e : ws.resolve(e);\n        } catch (t) {\n            return ws.reject(t);\n        }\n    }\n    On(t, e) {\n        return t ? this.Mn((() => t(e))) : ws.resolve(e);\n    }\n    Fn(t, e) {\n        return t ? this.Mn((() => t(e))) : ws.reject(e);\n    }\n    static resolve(t) {\n        return new ws(((e, n) => {\n            e(t);\n        }));\n    }\n    static reject(t) {\n        return new ws(((e, n) => {\n            n(t);\n        }));\n    }\n    static Ln(\n    // Accept all Promise types in waitFor().\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    t) {\n        return new ws(((e, n) => {\n            let s = 0, i = 0, r = !1;\n            t.forEach((t => {\n                ++s, t.next((() => {\n                    ++i, r && i === s && e();\n                }), (t => n(t)));\n            })), r = !0, i === s && e();\n        }));\n    }\n    /**\n     * Given an array of predicate functions that asynchronously evaluate to a\n     * boolean, implements a short-circuiting `or` between the results. Predicates\n     * will be evaluated until one of them returns `true`, then stop. The final\n     * result will be whether any of them returned `true`.\n     */    static $n(t) {\n        let e = ws.resolve(!1);\n        for (const n of t) e = e.next((t => t ? ws.resolve(t) : n()));\n        return e;\n    }\n    static forEach(t, e) {\n        const n = [];\n        return t.forEach(((t, s) => {\n            n.push(e.call(this, t, s));\n        })), this.Ln(n);\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n// References to `window` are guarded by SimpleDb.isAvailable()\n/* eslint-disable no-restricted-globals */\n/**\n * Wraps an IDBTransaction and exposes a store() method to get a handle to a\n * specific object store.\n */\nclass Es {\n    constructor(t, e) {\n        this.action = t, this.transaction = e, this.aborted = !1, \n        /**\n         * A promise that resolves with the result of the IndexedDb transaction.\n         */\n        this.Bn = new ds, this.transaction.oncomplete = () => {\n            this.Bn.resolve();\n        }, this.transaction.onabort = () => {\n            e.error ? this.Bn.reject(new ms(t, e.error)) : this.Bn.resolve();\n        }, this.transaction.onerror = e => {\n            const n = gs(e.target.error);\n            this.Bn.reject(new ms(t, n));\n        };\n    }\n    static open(t, e, n, s) {\n        try {\n            return new Es(e, t.transaction(s, n));\n        } catch (t) {\n            throw new ms(e, t);\n        }\n    }\n    get qn() {\n        return this.Bn.promise;\n    }\n    abort(t) {\n        t && this.Bn.reject(t), this.aborted || (R(\"SimpleDb\", \"Aborting transaction:\", t ? t.message : \"Client-initiated abort\"), \n        this.aborted = !0, this.transaction.abort());\n    }\n    /**\n     * Returns a SimpleDbStore<KeyType, ValueType> for the specified store. All\n     * operations performed on the SimpleDbStore happen within the context of this\n     * transaction and it cannot be used anymore once the transaction is\n     * completed.\n     *\n     * Note that we can't actually enforce that the KeyType and ValueType are\n     * correct, but they allow type safety through the rest of the consuming code.\n     */    store(t) {\n        const e = this.transaction.objectStore(t);\n        return new Rs(e);\n    }\n}\n\n/**\n * Provides a wrapper around IndexedDb with a simplified interface that uses\n * Promise-like return values to chain operations. Real promises cannot be used\n * since .then() continuations are executed asynchronously (e.g. via\n * .setImmediate), which would cause IndexedDB to end the transaction.\n * See PersistencePromise for more details.\n */ class Ts {\n    /*\n     * Creates a new SimpleDb wrapper for IndexedDb database `name`.\n     *\n     * Note that `version` must not be a downgrade. IndexedDB does not support\n     * downgrading the schema version. We currently do not support any way to do\n     * versioning outside of IndexedDB's versioning mechanism, as only\n     * version-upgrade transactions are allowed to do things like create\n     * objectstores.\n     */\n    constructor(t, e, s) {\n        this.name = t, this.version = e, this.Un = s;\n        // NOTE: According to https://bugs.webkit.org/show_bug.cgi?id=197050, the\n        // bug we're checking for should exist in iOS >= 12.2 and < 13, but for\n        // whatever reason it's much harder to hit after 12.2 so we only proactively\n        // log on 12.2.\n        12.2 === Ts.Qn(n()) && P(\"Firestore persistence suffers from a bug in iOS 12.2 Safari that may cause your app to stop working. See https://stackoverflow.com/q/56496296/110915 for details and a potential workaround.\");\n    }\n    /** Deletes the specified database. */    static delete(t) {\n        return R(\"SimpleDb\", \"Removing database:\", t), Ps(window.indexedDB.deleteDatabase(t)).kn();\n    }\n    /** Returns true if IndexedDB is available in the current environment. */    static Kn() {\n        if (\"undefined\" == typeof indexedDB) return !1;\n        if (Ts.Wn()) return !0;\n        // We extensively use indexed array values and compound keys,\n        // which IE and Edge do not support. However, they still have indexedDB\n        // defined on the window, so we need to check for them here and make sure\n        // to return that persistence is not enabled for those browsers.\n        // For tracking support of this feature, see here:\n        // https://developer.microsoft.com/en-us/microsoft-edge/platform/status/indexeddbarraysandmultientrysupport/\n        // Check the UA string to find out the browser.\n                const t = n(), e = Ts.Qn(t), s = 0 < e && e < 10, i = Ts.jn(t), r = 0 < i && i < 4.5;\n        // IE 10\n        // ua = 'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; Trident/6.0)';\n        // IE 11\n        // ua = 'Mozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko';\n        // Edge\n        // ua = 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML,\n        // like Gecko) Chrome/39.0.2171.71 Safari/537.36 Edge/12.0';\n        // iOS Safari: Disable for users running iOS version < 10.\n                return !(t.indexOf(\"MSIE \") > 0 || t.indexOf(\"Trident/\") > 0 || t.indexOf(\"Edge/\") > 0 || s || r);\n    }\n    /**\n     * Returns true if the backing IndexedDB store is the Node IndexedDBShim\n     * (see https://github.com/axemclion/IndexedDBShim).\n     */    static Wn() {\n        var t;\n        return \"undefined\" != typeof process && \"YES\" === (null === (t = process.env) || void 0 === t ? void 0 : t.Gn);\n    }\n    /** Helper to get a typed SimpleDbStore from a transaction. */    static zn(t, e) {\n        return t.store(e);\n    }\n    // visible for testing\n    /** Parse User Agent to determine iOS version. Returns -1 if not found. */\n    static Qn(t) {\n        const e = t.match(/i(?:phone|pad|pod) os ([\\d_]+)/i), n = e ? e[1].split(\"_\").slice(0, 2).join(\".\") : \"-1\";\n        return Number(n);\n    }\n    // visible for testing\n    /** Parse User Agent to determine Android version. Returns -1 if not found. */\n    static jn(t) {\n        const e = t.match(/Android ([\\d.]+)/i), n = e ? e[1].split(\".\").slice(0, 2).join(\".\") : \"-1\";\n        return Number(n);\n    }\n    /**\n     * Opens the specified database, creating or upgrading it if necessary.\n     */    async Hn(t) {\n        return this.db || (R(\"SimpleDb\", \"Opening database:\", this.name), this.db = await new Promise(((e, n) => {\n            // TODO(mikelehen): Investigate browser compatibility.\n            // https://developer.mozilla.org/en-US/docs/Web/API/IndexedDB_API/Using_IndexedDB\n            // suggests IE9 and older WebKit browsers handle upgrade\n            // differently. They expect setVersion, as described here:\n            // https://developer.mozilla.org/en-US/docs/Web/API/IDBVersionChangeRequest/setVersion\n            const s = indexedDB.open(this.name, this.version);\n            s.onsuccess = t => {\n                const n = t.target.result;\n                e(n);\n            }, s.onblocked = () => {\n                n(new ms(t, \"Cannot upgrade IndexedDB schema while another tab is open. Close all tabs that access Firestore and reload this page to proceed.\"));\n            }, s.onerror = e => {\n                const s = e.target.error;\n                \"VersionError\" === s.name ? n(new O(F.FAILED_PRECONDITION, \"A newer version of the Firestore SDK was previously used and so the persisted data is not compatible with the version of the SDK you are now using. The SDK will operate with persistence disabled. If you need persistence, please re-upgrade to a newer version of the SDK or else clear the persisted IndexedDB data for your app to start fresh.\")) : n(new ms(t, s));\n            }, s.onupgradeneeded = t => {\n                R(\"SimpleDb\", 'Database \"' + this.name + '\" requires upgrade from version:', t.oldVersion);\n                const e = t.target.result;\n                this.Un.Jn(e, s.transaction, t.oldVersion, this.version).next((() => {\n                    R(\"SimpleDb\", \"Database upgrade to version \" + this.version + \" complete\");\n                }));\n            };\n        }))), this.Yn && (this.db.onversionchange = t => this.Yn(t)), this.db;\n    }\n    Xn(t) {\n        this.Yn = t, this.db && (this.db.onversionchange = e => t(e));\n    }\n    async runTransaction(t, e, n, s) {\n        const i = \"readonly\" === e;\n        let r = 0;\n        for (;;) {\n            ++r;\n            try {\n                this.db = await this.Hn(t);\n                const e = Es.open(this.db, t, i ? \"readonly\" : \"readwrite\", n), r = s(e).catch((t => (\n                // Abort the transaction if there was an error.\n                e.abort(t), ws.reject(t)))).kn();\n                // As noted above, errors are propagated by aborting the transaction. So\n                // we swallow any error here to avoid the browser logging it as unhandled.\n                return r.catch((() => {})), \n                // Wait for the transaction to complete (i.e. IndexedDb's onsuccess event to\n                // fire), but still return the original transactionFnResult back to the\n                // caller.\n                await e.qn, r;\n            } catch (t) {\n                // TODO(schmidt-sebastian): We could probably be smarter about this and\n                // not retry exceptions that are likely unrecoverable (such as quota\n                // exceeded errors).\n                // Note: We cannot use an instanceof check for FirestoreException, since the\n                // exception is wrapped in a generic error by our async/await handling.\n                const e = \"FirebaseError\" !== t.name && r < 3;\n                if (R(\"SimpleDb\", \"Transaction failed with error:\", t.message, \"Retrying:\", e), \n                this.close(), !e) return Promise.reject(t);\n            }\n        }\n    }\n    close() {\n        this.db && this.db.close(), this.db = void 0;\n    }\n}\n\n/**\n * A controller for iterating over a key range or index. It allows an iterate\n * callback to delete the currently-referenced object, or jump to a new key\n * within the key range or index.\n */ class Is {\n    constructor(t) {\n        this.Zn = t, this.ts = !1, this.es = null;\n    }\n    get xn() {\n        return this.ts;\n    }\n    get ns() {\n        return this.es;\n    }\n    set cursor(t) {\n        this.Zn = t;\n    }\n    /**\n     * This function can be called to stop iteration at any point.\n     */    done() {\n        this.ts = !0;\n    }\n    /**\n     * This function can be called to skip to that next key, which could be\n     * an index or a primary key.\n     */    ss(t) {\n        this.es = t;\n    }\n    /**\n     * Delete the current cursor value from the object store.\n     *\n     * NOTE: You CANNOT do this with a keysOnly query.\n     */    delete() {\n        return Ps(this.Zn.delete());\n    }\n}\n\n/** An error that wraps exceptions that thrown during IndexedDB execution. */ class ms extends O {\n    constructor(t, e) {\n        super(F.UNAVAILABLE, `IndexedDB transaction '${t}' failed: ${e}`), this.name = \"IndexedDbTransactionError\";\n    }\n}\n\n/** Verifies whether `e` is an IndexedDbTransactionError. */ function As(t) {\n    // Use name equality, as instanceof checks on errors don't work with errors\n    // that wrap other errors.\n    return \"IndexedDbTransactionError\" === t.name;\n}\n\n/**\n * A wrapper around an IDBObjectStore providing an API that:\n *\n * 1) Has generic KeyType / ValueType parameters to provide strongly-typed\n * methods for acting against the object store.\n * 2) Deals with IndexedDB's onsuccess / onerror event callbacks, making every\n * method return a PersistencePromise instead.\n * 3) Provides a higher-level API to avoid needing to do excessive wrapping of\n * intermediate IndexedDB types (IDBCursorWithValue, etc.)\n */ class Rs {\n    constructor(t) {\n        this.store = t;\n    }\n    put(t, e) {\n        let n;\n        return void 0 !== e ? (R(\"SimpleDb\", \"PUT\", this.store.name, t, e), n = this.store.put(e, t)) : (R(\"SimpleDb\", \"PUT\", this.store.name, \"<auto-key>\", t), \n        n = this.store.put(t)), Ps(n);\n    }\n    /**\n     * Adds a new value into an Object Store and returns the new key. Similar to\n     * IndexedDb's `add()`, this method will fail on primary key collisions.\n     *\n     * @param value - The object to write.\n     * @returns The key of the value to add.\n     */    add(t) {\n        R(\"SimpleDb\", \"ADD\", this.store.name, t, t);\n        return Ps(this.store.add(t));\n    }\n    /**\n     * Gets the object with the specified key from the specified store, or null\n     * if no object exists with the specified key.\n     *\n     * @key The key of the object to get.\n     * @returns The object with the specified key or null if no object exists.\n     */    get(t) {\n        // We're doing an unsafe cast to ValueType.\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        return Ps(this.store.get(t)).next((e => (\n        // Normalize nonexistence to null.\n        void 0 === e && (e = null), R(\"SimpleDb\", \"GET\", this.store.name, t, e), e)));\n    }\n    delete(t) {\n        R(\"SimpleDb\", \"DELETE\", this.store.name, t);\n        return Ps(this.store.delete(t));\n    }\n    /**\n     * If we ever need more of the count variants, we can add overloads. For now,\n     * all we need is to count everything in a store.\n     *\n     * Returns the number of rows in the store.\n     */    count() {\n        R(\"SimpleDb\", \"COUNT\", this.store.name);\n        return Ps(this.store.count());\n    }\n    rs(t, e) {\n        const n = this.cursor(this.options(t, e)), s = [];\n        return this.os(n, ((t, e) => {\n            s.push(e);\n        })).next((() => s));\n    }\n    cs(t, e) {\n        R(\"SimpleDb\", \"DELETE ALL\", this.store.name);\n        const n = this.options(t, e);\n        n.us = !1;\n        const s = this.cursor(n);\n        return this.os(s, ((t, e, n) => n.delete()));\n    }\n    hs(t, e) {\n        let n;\n        e ? n = t : (n = {}, e = t);\n        const s = this.cursor(n);\n        return this.os(s, e);\n    }\n    /**\n     * Iterates over a store, but waits for the given callback to complete for\n     * each entry before iterating the next entry. This allows the callback to do\n     * asynchronous work to determine if this iteration should continue.\n     *\n     * The provided callback should return `true` to continue iteration, and\n     * `false` otherwise.\n     */    ls(t) {\n        const e = this.cursor({});\n        return new ws(((n, s) => {\n            e.onerror = t => {\n                const e = gs(t.target.error);\n                s(e);\n            }, e.onsuccess = e => {\n                const s = e.target.result;\n                s ? t(s.primaryKey, s.value).next((t => {\n                    t ? s.continue() : n();\n                })) : n();\n            };\n        }));\n    }\n    os(t, e) {\n        const n = [];\n        return new ws(((s, i) => {\n            t.onerror = t => {\n                i(t.target.error);\n            }, t.onsuccess = t => {\n                const i = t.target.result;\n                if (!i) return void s();\n                const r = new Is(i), o = e(i.primaryKey, i.value, r);\n                if (o instanceof ws) {\n                    const t = o.catch((t => (r.done(), ws.reject(t))));\n                    n.push(t);\n                }\n                r.xn ? s() : null === r.ns ? i.continue() : i.continue(r.ns);\n            };\n        })).next((() => ws.Ln(n)));\n    }\n    options(t, e) {\n        let n = void 0;\n        return void 0 !== t && (\"string\" == typeof t ? n = t : e = t), {\n            index: n,\n            range: e\n        };\n    }\n    cursor(t) {\n        let e = \"next\";\n        if (t.reverse && (e = \"prev\"), t.index) {\n            const n = this.store.index(t.index);\n            return t.us ? n.openKeyCursor(t.range, e) : n.openCursor(t.range, e);\n        }\n        return this.store.openCursor(t.range, e);\n    }\n}\n\n/**\n * Wraps an IDBRequest in a PersistencePromise, using the onsuccess / onerror\n * handlers to resolve / reject the PersistencePromise as appropriate.\n */ function Ps(t) {\n    return new ws(((e, n) => {\n        t.onsuccess = t => {\n            const n = t.target.result;\n            e(n);\n        }, t.onerror = t => {\n            const e = gs(t.target.error);\n            n(e);\n        };\n    }));\n}\n\n// Guard so we only report the error once.\nlet ys = !1;\n\nfunction gs(t) {\n    const e = Ts.Qn(n());\n    if (e >= 12.2 && e < 13) {\n        const e = \"An internal error was encountered in the Indexed Database server\";\n        if (t.message.indexOf(e) >= 0) {\n            // Wrap error in a more descriptive one.\n            const t = new O(\"internal\", `IOS_INDEXEDDB_BUG1: IndexedDb has thrown '${e}'. This is likely due to an unavoidable bug in iOS. See https://stackoverflow.com/q/56496296/110915 for details and a potential workaround.`);\n            return ys || (ys = !0, \n            // Throw a global exception outside of this promise chain, for the user to\n            // potentially catch.\n            setTimeout((() => {\n                throw t;\n            }), 0)), t;\n        }\n    }\n    return t;\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Represents an operation scheduled to be run in the future on an AsyncQueue.\n *\n * It is created via DelayedOperation.createAndSchedule().\n *\n * Supports cancellation (via cancel()) and early execution (via skipDelay()).\n *\n * Note: We implement `PromiseLike` instead of `Promise`, as the `Promise` type\n * in newer versions of TypeScript defines `finally`, which is not available in\n * IE.\n */\nclass Vs {\n    constructor(t, e, n, s, i) {\n        this._s = t, this.fs = e, this.ds = n, this.op = s, this.ws = i, this.Es = new ds, \n        this.then = this.Es.promise.then.bind(this.Es.promise), \n        // It's normal for the deferred promise to be canceled (due to cancellation)\n        // and so we attach a dummy catch callback to avoid\n        // 'UnhandledPromiseRejectionWarning' log spam.\n        this.Es.promise.catch((t => {}));\n    }\n    /**\n     * Creates and returns a DelayedOperation that has been scheduled to be\n     * executed on the provided asyncQueue after the provided delayMs.\n     *\n     * @param asyncQueue - The queue to schedule the operation on.\n     * @param id - A Timer ID identifying the type of operation this is.\n     * @param delayMs - The delay (ms) before the operation should be scheduled.\n     * @param op - The operation to run.\n     * @param removalCallback - A callback to be called synchronously once the\n     *   operation is executed or canceled, notifying the AsyncQueue to remove it\n     *   from its delayedOperations list.\n     *   PORTING NOTE: This exists to prevent making removeDelayedOperation() and\n     *   the DelayedOperation class public.\n     */    static Ts(t, e, n, s, i) {\n        const r = Date.now() + n, o = new Vs(t, e, r, s, i);\n        return o.start(n), o;\n    }\n    /**\n     * Starts the timer. This is called immediately after construction by\n     * createAndSchedule().\n     */    start(t) {\n        this.Is = setTimeout((() => this.As()), t);\n    }\n    /**\n     * Queues the operation to run immediately (if it hasn't already been run or\n     * canceled).\n     */    Rs() {\n        return this.As();\n    }\n    /**\n     * Cancels the operation if it hasn't already been executed or canceled. The\n     * promise will be rejected.\n     *\n     * As long as the operation has not yet been run, calling cancel() provides a\n     * guarantee that the operation will not be run.\n     */    cancel(t) {\n        null !== this.Is && (this.clearTimeout(), this.Es.reject(new O(F.CANCELLED, \"Operation cancelled\" + (t ? \": \" + t : \"\"))));\n    }\n    As() {\n        this._s.Ps((() => null !== this.Is ? (this.clearTimeout(), this.op().then((t => this.Es.resolve(t)))) : Promise.resolve()));\n    }\n    clearTimeout() {\n        null !== this.Is && (this.ws(this), clearTimeout(this.Is), this.Is = null);\n    }\n}\n\n/**\n * Returns a FirestoreError that can be surfaced to the user if the provided\n * error is an IndexedDbTransactionError. Re-throws the error otherwise.\n */ function ps(t, e) {\n    if (P(\"AsyncQueue\", `${e}: ${t}`), As(t)) return new O(F.UNAVAILABLE, `${e}: ${t}`);\n    throw t;\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ const bs = \"The current tab is not in the required state to perform this operation. It might be necessary to refresh the browser tab.\";\n\n/**\n * A base class representing a persistence transaction, encapsulating both the\n * transaction's sequence numbers as well as a list of onCommitted listeners.\n *\n * When you call Persistence.runTransaction(), it will create a transaction and\n * pass it to your callback. You then pass it to any method that operates\n * on persistence.\n */ class vs {\n    constructor() {\n        this.ys = [];\n    }\n    gs(t) {\n        this.ys.push(t);\n    }\n    Vs() {\n        this.ys.forEach((t => t()));\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Encodes a resource path into a IndexedDb-compatible string form.\n */\nfunction Ss(t) {\n    let e = \"\";\n    for (let n = 0; n < t.length; n++) e.length > 0 && (e = Cs(e)), e = Ds(t.get(n), e);\n    return Cs(e);\n}\n\n/** Encodes a single segment of a resource path into the given result */ function Ds(t, e) {\n    let n = e;\n    const s = t.length;\n    for (let e = 0; e < s; e++) {\n        const s = t.charAt(e);\n        switch (s) {\n          case \"\\0\":\n            n += \"\u0001\u0010\";\n            break;\n\n          case \"\u0001\":\n            n += \"\u0001\u0011\";\n            break;\n\n          default:\n            n += s;\n        }\n    }\n    return n;\n}\n\n/** Encodes a path separator into the given result */ function Cs(t) {\n    return t + \"\u0001\u0001\";\n}\n\n/**\n * Decodes the given IndexedDb-compatible string form of a resource path into\n * a ResourcePath instance. Note that this method is not suitable for use with\n * decoding resource names from the server; those are One Platform format\n * strings.\n */ function xs(t) {\n    // Event the empty path must encode as a path of at least length 2. A path\n    // with exactly 2 must be the empty path.\n    const e = t.length;\n    if (p(e >= 2), 2 === e) return p(\"\u0001\" === t.charAt(0) && \"\u0001\" === t.charAt(1)), G.ct();\n    // Escape characters cannot exist past the second-to-last position in the\n    // source value.\n        const n = e - 2, s = [];\n    let i = \"\";\n    for (let r = 0; r < e; ) {\n        // The last two characters of a valid encoded path must be a separator, so\n        // there must be an end to this segment.\n        const e = t.indexOf(\"\u0001\", r);\n        (e < 0 || e > n) && V();\n        switch (t.charAt(e + 1)) {\n          case \"\u0001\":\n            const n = t.substring(r, e);\n            let o;\n            0 === i.length ? \n            // Avoid copying for the common case of a segment that excludes \\0\n            // and \\001\n            o = n : (i += n, o = i, i = \"\"), s.push(o);\n            break;\n\n          case \"\u0010\":\n            i += t.substring(r, e), i += \"\\0\";\n            break;\n\n          case \"\u0011\":\n            // The escape character can be used in the output to encode itself.\n            i += t.substring(r, e + 1);\n            break;\n\n          default:\n            V();\n        }\n        r = e + 2;\n    }\n    return new G(s);\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Schema Version for the Web client:\n * 1.  Initial version including Mutation Queue, Query Cache, and Remote\n *     Document Cache\n * 2.  Used to ensure a targetGlobal object exists and add targetCount to it. No\n *     longer required because migration 3 unconditionally clears it.\n * 3.  Dropped and re-created Query Cache to deal with cache corruption related\n *     to limbo resolution. Addresses\n *     https://github.com/firebase/firebase-ios-sdk/issues/1548\n * 4.  Multi-Tab Support.\n * 5.  Removal of held write acks.\n * 6.  Create document global for tracking document cache size.\n * 7.  Ensure every cached document has a sentinel row with a sequence number.\n * 8.  Add collection-parent index for Collection Group queries.\n * 9.  Change RemoteDocumentChanges store to be keyed by readTime rather than\n *     an auto-incrementing ID. This is required for Index-Free queries.\n * 10. Rewrite the canonical IDs to the explicit Protobuf-based format.\n * 11. Add bundles and named_queries for bundle support.\n */\n/**\n * Wrapper class to store timestamps (seconds and nanos) in IndexedDb objects.\n */\nclass Ns {\n    constructor(t, e) {\n        this.seconds = t, this.nanoseconds = e;\n    }\n}\n\n/**\n * A singleton object to be stored in the 'owner' store in IndexedDb.\n *\n * A given database can have a single primary tab assigned at a given time. That\n * tab must validate that it is still holding the primary lease before every\n * operation that requires locked access. The primary tab should regularly\n * write an updated timestamp to this lease to prevent other tabs from\n * \"stealing\" the primary lease\n */ class Fs {\n    constructor(t, \n    /** Whether to allow shared access from multiple tabs. */\n    e, n) {\n        this.ownerId = t, this.allowTabSynchronization = e, this.leaseTimestampMs = n;\n    }\n}\n\n/**\n * Name of the IndexedDb object store.\n *\n * Note that the name 'owner' is chosen to ensure backwards compatibility with\n * older clients that only supported single locked access to the persistence\n * layer.\n */ Fs.store = \"owner\", \n/**\n * The key string used for the single object that exists in the\n * DbPrimaryClient store.\n */\nFs.key = \"owner\";\n\n/**\n * An object to be stored in the 'mutationQueues' store in IndexedDb.\n *\n * Each user gets a single queue of MutationBatches to apply to the server.\n * DbMutationQueue tracks the metadata about the queue.\n */\nclass Os {\n    constructor(\n    /**\n     * The normalized user ID to which this queue belongs.\n     */\n    t, \n    /**\n     * An identifier for the highest numbered batch that has been acknowledged\n     * by the server. All MutationBatches in this queue with batchIds less\n     * than or equal to this value are considered to have been acknowledged by\n     * the server.\n     *\n     * NOTE: this is deprecated and no longer used by the code.\n     */\n    e, \n    /**\n     * A stream token that was previously sent by the server.\n     *\n     * See StreamingWriteRequest in datastore.proto for more details about\n     * usage.\n     *\n     * After sending this token, earlier tokens may not be used anymore so\n     * only a single stream token is retained.\n     *\n     * NOTE: this is deprecated and no longer used by the code.\n     */\n    n) {\n        this.userId = t, this.lastAcknowledgedBatchId = e, this.lastStreamToken = n;\n    }\n}\n\n/** Name of the IndexedDb object store.  */ Os.store = \"mutationQueues\", \n/** Keys are automatically assigned via the userId property. */\nOs.keyPath = \"userId\";\n\n/**\n * An object to be stored in the 'mutations' store in IndexedDb.\n *\n * Represents a batch of user-level mutations intended to be sent to the server\n * in a single write. Each user-level batch gets a separate DbMutationBatch\n * with a new batchId.\n */\nclass ks {\n    constructor(\n    /**\n     * The normalized user ID to which this batch belongs.\n     */\n    t, \n    /**\n     * An identifier for this batch, allocated using an auto-generated key.\n     */\n    e, \n    /**\n     * The local write time of the batch, stored as milliseconds since the\n     * epoch.\n     */\n    n, \n    /**\n     * A list of \"mutations\" that represent a partial base state from when this\n     * write batch was initially created. During local application of the write\n     * batch, these baseMutations are applied prior to the real writes in order\n     * to override certain document fields from the remote document cache. This\n     * is necessary in the case of non-idempotent writes (e.g. `increment()`\n     * transforms) to make sure that the local view of the modified documents\n     * doesn't flicker if the remote document cache receives the result of the\n     * non-idempotent write before the write is removed from the queue.\n     *\n     * These mutations are never sent to the backend.\n     */\n    s, \n    /**\n     * A list of mutations to apply. All mutations will be applied atomically.\n     *\n     * Mutations are serialized via toMutation().\n     */\n    i) {\n        this.userId = t, this.batchId = e, this.localWriteTimeMs = n, this.baseMutations = s, \n        this.mutations = i;\n    }\n}\n\n/** Name of the IndexedDb object store.  */ ks.store = \"mutations\", \n/** Keys are automatically assigned via the userId, batchId properties. */\nks.keyPath = \"batchId\", \n/** The index name for lookup of mutations by user. */\nks.userMutationsIndex = \"userMutationsIndex\", \n/** The user mutations index is keyed by [userId, batchId] pairs. */\nks.userMutationsKeyPath = [ \"userId\", \"batchId\" ];\n\n/**\n * An object to be stored in the 'documentMutations' store in IndexedDb.\n *\n * A manually maintained index of all the mutation batches that affect a given\n * document key. The rows in this table are references based on the contents of\n * DbMutationBatch.mutations.\n */\nclass Ms {\n    constructor() {}\n    /**\n     * Creates a [userId] key for use in the DbDocumentMutations index to iterate\n     * over all of a user's document mutations.\n     */    static prefixForUser(t) {\n        return [ t ];\n    }\n    /**\n     * Creates a [userId, encodedPath] key for use in the DbDocumentMutations\n     * index to iterate over all at document mutations for a given path or lower.\n     */    static prefixForPath(t, e) {\n        return [ t, Ss(e) ];\n    }\n    /**\n     * Creates a full index key of [userId, encodedPath, batchId] for inserting\n     * and deleting into the DbDocumentMutations index.\n     */    static key(t, e, n) {\n        return [ t, Ss(e), n ];\n    }\n}\n\nMs.store = \"documentMutations\", \n/**\n * Because we store all the useful information for this store in the key,\n * there is no useful information to store as the value. The raw (unencoded)\n * path cannot be stored because IndexedDb doesn't store prototype\n * information.\n */\nMs.PLACEHOLDER = new Ms;\n\n/**\n * Represents the known absence of a document at a particular version.\n * Stored in IndexedDb as part of a DbRemoteDocument object.\n */\nclass Ls {\n    constructor(t, e) {\n        this.path = t, this.readTime = e;\n    }\n}\n\n/**\n * Represents a document that is known to exist but whose data is unknown.\n * Stored in IndexedDb as part of a DbRemoteDocument object.\n */ class $s {\n    constructor(t, e) {\n        this.path = t, this.version = e;\n    }\n}\n\n/**\n * An object to be stored in the 'remoteDocuments' store in IndexedDb.\n * It represents either:\n *\n * - A complete document.\n * - A \"no document\" representing a document that is known not to exist (at\n * some version).\n * - An \"unknown document\" representing a document that is known to exist (at\n * some version) but whose contents are unknown.\n *\n * Note: This is the persisted equivalent of a MaybeDocument and could perhaps\n * be made more general if necessary.\n */ class Bs {\n    // TODO: We are currently storing full document keys almost three times\n    // (once as part of the primary key, once - partly - as `parentPath` and once\n    // inside the encoded documents). During our next migration, we should\n    // rewrite the primary key as parentPath + document ID which would allow us\n    // to drop one value.\n    constructor(\n    /**\n     * Set to an instance of DbUnknownDocument if the data for a document is\n     * not known, but it is known that a document exists at the specified\n     * version (e.g. it had a successful update applied to it)\n     */\n    t, \n    /**\n     * Set to an instance of a DbNoDocument if it is known that no document\n     * exists.\n     */\n    e, \n    /**\n     * Set to an instance of a Document if there's a cached version of the\n     * document.\n     */\n    n, \n    /**\n     * Documents that were written to the remote document store based on\n     * a write acknowledgment are marked with `hasCommittedMutations`. These\n     * documents are potentially inconsistent with the backend's copy and use\n     * the write's commit version as their document version.\n     */\n    s, \n    /**\n     * When the document was read from the backend. Undefined for data written\n     * prior to schema version 9.\n     */\n    i, \n    /**\n     * The path of the collection this document is part of. Undefined for data\n     * written prior to schema version 9.\n     */\n    r) {\n        this.unknownDocument = t, this.noDocument = e, this.document = n, this.hasCommittedMutations = s, \n        this.readTime = i, this.parentPath = r;\n    }\n}\n\nBs.store = \"remoteDocuments\", \n/**\n * An index that provides access to all entries sorted by read time (which\n * corresponds to the last modification time of each row).\n *\n * This index is used to provide a changelog for Multi-Tab.\n */\nBs.readTimeIndex = \"readTimeIndex\", Bs.readTimeIndexPath = \"readTime\", \n/**\n * An index that provides access to documents in a collection sorted by read\n * time.\n *\n * This index is used to allow the RemoteDocumentCache to fetch newly changed\n * documents in a collection.\n */\nBs.collectionReadTimeIndex = \"collectionReadTimeIndex\", Bs.collectionReadTimeIndexPath = [ \"parentPath\", \"readTime\" ];\n\n/**\n * Contains a single entry that has metadata about the remote document cache.\n */\nclass qs {\n    /**\n     * @param byteSize - Approximately the total size in bytes of all the\n     * documents in the document cache.\n     */\n    constructor(t) {\n        this.byteSize = t;\n    }\n}\n\nqs.store = \"remoteDocumentGlobal\", qs.key = \"remoteDocumentGlobalKey\";\n\n/**\n * An object to be stored in the 'targets' store in IndexedDb.\n *\n * This is based on and should be kept in sync with the proto used in the iOS\n * client.\n *\n * Each query the client listens to against the server is tracked on disk so\n * that the query can be efficiently resumed on restart.\n */\nclass Us {\n    constructor(\n    /**\n     * An auto-generated sequential numeric identifier for the query.\n     *\n     * Queries are stored using their canonicalId as the key, but these\n     * canonicalIds can be quite long so we additionally assign a unique\n     * queryId which can be used by referenced data structures (e.g.\n     * indexes) to minimize the on-disk cost.\n     */\n    t, \n    /**\n     * The canonical string representing this query. This is not unique.\n     */\n    e, \n    /**\n     * The last readTime received from the Watch Service for this query.\n     *\n     * This is the same value as TargetChange.read_time in the protos.\n     */\n    n, \n    /**\n     * An opaque, server-assigned token that allows watching a query to be\n     * resumed after disconnecting without retransmitting all the data\n     * that matches the query. The resume token essentially identifies a\n     * point in time from which the server should resume sending results.\n     *\n     * This is related to the snapshotVersion in that the resumeToken\n     * effectively also encodes that value, but the resumeToken is opaque\n     * and sometimes encodes additional information.\n     *\n     * A consequence of this is that the resumeToken should be used when\n     * asking the server to reason about where this client is in the watch\n     * stream, but the client should use the snapshotVersion for its own\n     * purposes.\n     *\n     * This is the same value as TargetChange.resume_token in the protos.\n     */\n    s, \n    /**\n     * A sequence number representing the last time this query was\n     * listened to, used for garbage collection purposes.\n     *\n     * Conventionally this would be a timestamp value, but device-local\n     * clocks are unreliable and they must be able to create new listens\n     * even while disconnected. Instead this should be a monotonically\n     * increasing number that's incremented on each listen call.\n     *\n     * This is different from the queryId since the queryId is an\n     * immutable identifier assigned to the Query on first use while\n     * lastListenSequenceNumber is updated every time the query is\n     * listened to.\n     */\n    i, \n    /**\n     * Denotes the maximum snapshot version at which the associated query view\n     * contained no limbo documents.  Undefined for data written prior to\n     * schema version 9.\n     */\n    r, \n    /**\n     * The query for this target.\n     *\n     * Because canonical ids are not unique we must store the actual query. We\n     * use the proto to have an object we can persist without having to\n     * duplicate translation logic to and from a `Query` object.\n     */\n    o) {\n        this.targetId = t, this.canonicalId = e, this.readTime = n, this.resumeToken = s, \n        this.lastListenSequenceNumber = i, this.lastLimboFreeSnapshotVersion = r, this.query = o;\n    }\n}\n\nUs.store = \"targets\", \n/** Keys are automatically assigned via the targetId property. */\nUs.keyPath = \"targetId\", \n/** The name of the queryTargets index. */\nUs.queryTargetsIndexName = \"queryTargetsIndex\", \n/**\n * The index of all canonicalIds to the targets that they match. This is not\n * a unique mapping because canonicalId does not promise a unique name for all\n * possible queries, so we append the targetId to make the mapping unique.\n */\nUs.queryTargetsKeyPath = [ \"canonicalId\", \"targetId\" ];\n\n/**\n * An object representing an association between a target and a document, or a\n * sentinel row marking the last sequence number at which a document was used.\n * Each document cached must have a corresponding sentinel row before lru\n * garbage collection is enabled.\n *\n * The target associations and sentinel rows are co-located so that orphaned\n * documents and their sequence numbers can be identified efficiently via a scan\n * of this store.\n */\nclass Qs {\n    constructor(\n    /**\n     * The targetId identifying a target or 0 for a sentinel row.\n     */\n    t, \n    /**\n     * The path to the document, as encoded in the key.\n     */\n    e, \n    /**\n     * If this is a sentinel row, this should be the sequence number of the last\n     * time the document specified by `path` was used. Otherwise, it should be\n     * `undefined`.\n     */\n    n) {\n        this.targetId = t, this.path = e, this.sequenceNumber = n;\n    }\n}\n\n/** Name of the IndexedDb object store.  */ Qs.store = \"targetDocuments\", \n/** Keys are automatically assigned via the targetId, path properties. */\nQs.keyPath = [ \"targetId\", \"path\" ], \n/** The index name for the reverse index. */\nQs.documentTargetsIndex = \"documentTargetsIndex\", \n/** We also need to create the reverse index for these properties. */\nQs.documentTargetsKeyPath = [ \"path\", \"targetId\" ];\n\n/**\n * A record of global state tracked across all Targets, tracked separately\n * to avoid the need for extra indexes.\n *\n * This should be kept in-sync with the proto used in the iOS client.\n */\nclass Ks {\n    constructor(\n    /**\n     * The highest numbered target id across all targets.\n     *\n     * See DbTarget.targetId.\n     */\n    t, \n    /**\n     * The highest numbered lastListenSequenceNumber across all targets.\n     *\n     * See DbTarget.lastListenSequenceNumber.\n     */\n    e, \n    /**\n     * A global snapshot version representing the last consistent snapshot we\n     * received from the backend. This is monotonically increasing and any\n     * snapshots received from the backend prior to this version (e.g. for\n     * targets resumed with a resumeToken) should be suppressed (buffered)\n     * until the backend has caught up to this snapshot version again. This\n     * prevents our cache from ever going backwards in time.\n     */\n    n, \n    /**\n     * The number of targets persisted.\n     */\n    s) {\n        this.highestTargetId = t, this.highestListenSequenceNumber = e, this.lastRemoteSnapshotVersion = n, \n        this.targetCount = s;\n    }\n}\n\n/**\n * The key string used for the single object that exists in the\n * DbTargetGlobal store.\n */ Ks.key = \"targetGlobalKey\", Ks.store = \"targetGlobal\";\n\n/**\n * An object representing an association between a Collection id (e.g. 'messages')\n * to a parent path (e.g. '/chats/123') that contains it as a (sub)collection.\n * This is used to efficiently find all collections to query when performing\n * a Collection Group query.\n */\nclass Ws {\n    constructor(\n    /**\n     * The collectionId (e.g. 'messages')\n     */\n    t, \n    /**\n     * The path to the parent (either a document location or an empty path for\n     * a root-level collection).\n     */\n    e) {\n        this.collectionId = t, this.parent = e;\n    }\n}\n\n/** Name of the IndexedDb object store. */ Ws.store = \"collectionParents\", \n/** Keys are automatically assigned via the collectionId, parent properties. */\nWs.keyPath = [ \"collectionId\", \"parent\" ];\n\n/**\n * A record of the metadata state of each client.\n *\n * PORTING NOTE: This is used to synchronize multi-tab state and does not need\n * to be ported to iOS or Android.\n */\nclass js {\n    constructor(\n    // Note: Previous schema versions included a field\n    // \"lastProcessedDocumentChangeId\". Don't use anymore.\n    /** The auto-generated client id assigned at client startup. */\n    t, \n    /** The last time this state was updated. */\n    e, \n    /** Whether the client's network connection is enabled. */\n    n, \n    /** Whether this client is running in a foreground tab. */\n    s) {\n        this.clientId = t, this.updateTimeMs = e, this.networkEnabled = n, this.inForeground = s;\n    }\n}\n\n/** Name of the IndexedDb object store. */ js.store = \"clientMetadata\", \n/** Keys are automatically assigned via the clientId properties. */\njs.keyPath = \"clientId\";\n\n/**\n * A object representing a bundle loaded by the SDK.\n */\nclass Gs {\n    constructor(\n    /** The ID of the loaded bundle. */\n    t, \n    /** The create time of the loaded bundle. */\n    e, \n    /** The schema version of the loaded bundle. */\n    n) {\n        this.bundleId = t, this.createTime = e, this.version = n;\n    }\n}\n\n/** Name of the IndexedDb object store. */ Gs.store = \"bundles\", Gs.keyPath = \"bundleId\";\n\n/**\n * A object representing a named query loaded by the SDK via a bundle.\n */\nclass zs {\n    constructor(\n    /** The name of the query. */\n    t, \n    /** The read time of the results saved in the bundle from the named query. */\n    e, \n    /** The query saved in the bundle. */\n    n) {\n        this.name = t, this.readTime = e, this.bundledQuery = n;\n    }\n}\n\n/** Name of the IndexedDb object store. */ zs.store = \"namedQueries\", zs.keyPath = \"name\";\n\n// Visible for testing\nconst Hs = [ ...[ ...[ ...[ ...[ Os.store, ks.store, Ms.store, Bs.store, Us.store, Fs.store, Ks.store, Qs.store ], js.store ], qs.store ], Ws.store ], Gs.store, zs.store ];\n\n// V2 is no longer usable (see comment at top of file)\n// Visible for testing\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nclass Js extends vs {\n    constructor(t, e) {\n        super(), this.ps = t, this.bs = e;\n    }\n}\n\nfunction Ys(t, e) {\n    const n = b(t);\n    return Ts.zn(n.ps, e);\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * A batch of mutations that will be sent as one unit to the backend.\n */ class Xs {\n    /**\n     * @param batchId - The unique ID of this mutation batch.\n     * @param localWriteTime - The original write time of this mutation.\n     * @param baseMutations - Mutations that are used to populate the base\n     * values when this mutation is applied locally. This can be used to locally\n     * overwrite values that are persisted in the remote document cache. Base\n     * mutations are never sent to the backend.\n     * @param mutations - The user-provided mutations in this mutation batch.\n     * User-provided mutations are applied both locally and remotely on the\n     * backend.\n     */\n    constructor(t, e, n, s) {\n        this.batchId = t, this.vs = e, this.baseMutations = n, this.mutations = s;\n    }\n    /**\n     * Applies all the mutations in this MutationBatch to the specified document\n     * to create a new remote document\n     *\n     * @param docKey - The key of the document to apply mutations to.\n     * @param maybeDoc - The document to apply mutations to.\n     * @param batchResult - The result of applying the MutationBatch to the\n     * backend.\n     */    Ss(t, e, n) {\n        const s = n.Ds;\n        for (let n = 0; n < this.mutations.length; n++) {\n            const i = this.mutations[n];\n            if (i.key.isEqual(t)) {\n                e = Le(i, e, s[n]);\n            }\n        }\n        return e;\n    }\n    /**\n     * Computes the local view of a document given all the mutations in this\n     * batch.\n     *\n     * @param docKey - The key of the document to apply mutations to.\n     * @param maybeDoc - The document to apply mutations to.\n     */    Cs(t, e) {\n        // First, apply the base state. This allows us to apply non-idempotent\n        // transform against a consistent set of values.\n        for (const n of this.baseMutations) n.key.isEqual(t) && (e = $e(n, e, this.vs));\n        // Second, apply all user-provided mutations.\n                for (const n of this.mutations) n.key.isEqual(t) && (e = $e(n, e, this.vs));\n        return e;\n    }\n    /**\n     * Computes the local view for all provided documents given the mutations in\n     * this batch.\n     */    xs(t) {\n        // TODO(mrschmidt): This implementation is O(n^2). If we apply the mutations\n        // directly (as done in `applyToLocalView()`), we can reduce the complexity\n        // to O(n).\n        let e = t;\n        return this.mutations.forEach((n => {\n            const s = this.Cs(n.key, t.get(n.key));\n            s && (e = e.zt(n.key, s));\n        })), e;\n    }\n    keys() {\n        return this.mutations.reduce(((t, e) => t.add(e.key)), En());\n    }\n    isEqual(t) {\n        return this.batchId === t.batchId && C(this.mutations, t.mutations, ((t, e) => qe(t, e))) && C(this.baseMutations, t.baseMutations, ((t, e) => qe(t, e)));\n    }\n}\n\n/** The result of applying a mutation batch to the backend. */ class Zs {\n    constructor(t, e, n, \n    /**\n     * A pre-computed mapping from each mutated document to the resulting\n     * version.\n     */\n    s) {\n        this.batch = t, this.Ns = e, this.Ds = n, this.Fs = s;\n    }\n    /**\n     * Creates a new MutationBatchResult for the given batch and results. There\n     * must be one result for each mutation in the batch. This static factory\n     * caches a document=&gt;version mapping (docVersions).\n     */    static from(t, e, n) {\n        p(t.mutations.length === n.length);\n        let s = dn();\n        const i = t.mutations;\n        for (let t = 0; t < i.length; t++) s = s.zt(i[t].key, n[t].version);\n        return new Zs(t, e, n, s);\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/** Serializer for values stored in the LocalStore. */ class ti {\n    constructor(t) {\n        this.Os = t;\n    }\n}\n\n/** Decodes a remote document from storage locally to a Document. */ function ei(t, e) {\n    if (e.document) return Gn(t.Os, e.document, !!e.hasCommittedMutations);\n    if (e.noDocument) {\n        const t = J.Et(e.noDocument.path), n = oi(e.noDocument.readTime);\n        return new St(t, n, {\n            hasCommittedMutations: !!e.hasCommittedMutations\n        });\n    }\n    if (e.unknownDocument) {\n        const t = J.Et(e.unknownDocument.path), n = oi(e.unknownDocument.version);\n        return new Dt(t, n);\n    }\n    return V();\n}\n\n/** Encodes a document for storage locally. */ function ni(t, e, n) {\n    const s = si(n), i = e.key.path.X().it();\n    if (e instanceof vt) {\n        const n = function(t, e) {\n            return {\n                name: Bn(t, e.key),\n                fields: e.bt().mapValue.fields,\n                updateTime: Fn(t, e.version.j())\n            };\n        }(t.Os, e), r = e.hasCommittedMutations;\n        return new Bs(\n        /* unknownDocument= */ null, \n        /* noDocument= */ null, n, r, s, i);\n    }\n    if (e instanceof St) {\n        const t = e.key.path.it(), n = ri(e.version), r = e.hasCommittedMutations;\n        return new Bs(\n        /* unknownDocument= */ null, new Ls(t, n), \n        /* document= */ null, r, s, i);\n    }\n    if (e instanceof Dt) {\n        const t = e.key.path.it(), n = ri(e.version);\n        return new Bs(new $s(t, n), \n        /* noDocument= */ null, \n        /* document= */ null, \n        /* hasCommittedMutations= */ !0, s, i);\n    }\n    return V();\n}\n\nfunction si(t) {\n    const e = t.j();\n    return [ e.seconds, e.nanoseconds ];\n}\n\nfunction ii(t) {\n    const e = new K(t[0], t[1]);\n    return W.K(e);\n}\n\nfunction ri(t) {\n    const e = t.j();\n    return new Ns(e.seconds, e.nanoseconds);\n}\n\nfunction oi(t) {\n    const e = new K(t.seconds, t.nanoseconds);\n    return W.K(e);\n}\n\n/** Encodes a batch of mutations into a DbMutationBatch for local storage. */\n/** Decodes a DbMutationBatch into a MutationBatch */\nfunction ci(t, e) {\n    const n = (e.baseMutations || []).map((e => Yn(t.Os, e)));\n    // Squash old transform mutations into existing patch or set mutations.\n    // The replacement of representing `transforms` with `update_transforms`\n    // on the SDK means that old `transform` mutations stored in IndexedDB need\n    // to be updated to `update_transforms`.\n    // TODO(b/174608374): Remove this code once we perform a schema migration.\n        for (let t = 0; t < e.mutations.length - 1; ++t) {\n        const n = e.mutations[t];\n        if (t + 1 < e.mutations.length && void 0 !== e.mutations[t + 1].transform) {\n            const s = e.mutations[t + 1];\n            n.updateTransforms = s.transform.fieldTransforms, e.mutations.splice(t + 1, 1), \n            ++t;\n        }\n    }\n    const s = e.mutations.map((e => Yn(t.Os, e))), i = K.fromMillis(e.localWriteTimeMs);\n    return new Xs(e.batchId, i, n, s);\n}\n\n/** Decodes a DbTarget into TargetData */ function ai(t) {\n    const e = oi(t.readTime), n = void 0 !== t.lastLimboFreeSnapshotVersion ? oi(t.lastLimboFreeSnapshotVersion) : W.min();\n    let s;\n    var i;\n    return void 0 !== t.query.documents ? (p(1 === (i = t.query).documents.length), \n    s = ae(ee(Qn(i.documents[0])))) : s = function(t) {\n        return ae(es(t));\n    }(t.query), new Ee(s, t.targetId, 0 /* Listen */ , t.lastListenSequenceNumber, e, n, N.fromBase64String(t.resumeToken));\n}\n\n/** Encodes TargetData into a DbTarget for storage locally. */ function ui(t, e) {\n    const n = ri(e.kt), s = ri(e.lastLimboFreeSnapshotVersion);\n    let i;\n    i = kt(e.target) ? Zn(t.Os, e.target) : ts(t.Os, e.target);\n    // We can't store the resumeToken as a ByteString in IndexedDb, so we\n    // convert it to a base64 string for storage.\n        const r = e.resumeToken.toBase64();\n    // lastListenSequenceNumber is always 0 until we do real GC.\n        return new Us(e.targetId, Nt(e.target), n, r, e.sequenceNumber, s, i);\n}\n\n/**\n * A helper function for figuring out what kind of query has been stored.\n */\n/**\n * Encodes a `BundledQuery` from bundle proto to a Query object.\n *\n * This reconstructs the original query used to build the bundle being loaded,\n * including features exists only in SDKs (for example: limit-to-last).\n */\nfunction hi(t) {\n    const e = es({\n        parent: t.parent,\n        structuredQuery: t.structuredQuery\n    });\n    return \"LAST\" === t.limitType ? ue(e, e.limit, \"L\" /* Last */) : e;\n}\n\n/** Encodes a NamedQuery proto object to a NamedQuery model object. */\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nclass li {\n    ks(t, e) {\n        return _i(t).get(e).next((t => {\n            if (t) return {\n                id: (e = t).bundleId,\n                createTime: oi(e.createTime),\n                version: e.version\n            };\n            /** Encodes a DbBundle to a BundleMetadata object. */\n            var e;\n            /** Encodes a BundleMetadata to a DbBundle. */        }));\n    }\n    Ms(t, e) {\n        return _i(t).put({\n            bundleId: (n = e).id,\n            createTime: ri(Mn(n.createTime)),\n            version: n.version\n        });\n        var n;\n        /** Encodes a DbNamedQuery to a NamedQuery. */    }\n    Ls(t, e) {\n        return fi(t).get(e).next((t => {\n            if (t) return {\n                name: (e = t).name,\n                query: hi(e.bundledQuery),\n                readTime: oi(e.readTime)\n            };\n            var e;\n            /** Encodes a NamedQuery from a bundle proto to a DbNamedQuery. */        }));\n    }\n    $s(t, e) {\n        return fi(t).put(function(t) {\n            return {\n                name: t.name,\n                readTime: ri(Mn(t.readTime)),\n                bundledQuery: t.bundledQuery\n            };\n        }(e));\n    }\n}\n\n/**\n * Helper to get a typed SimpleDbStore for the bundles object store.\n */ function _i(t) {\n    return Ys(t, Gs.store);\n}\n\n/**\n * Helper to get a typed SimpleDbStore for the namedQueries object store.\n */ function fi(t) {\n    return Ys(t, zs.store);\n}\n\n/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * An in-memory implementation of IndexManager.\n */ class di {\n    constructor() {\n        this.Bs = new wi;\n    }\n    qs(t, e) {\n        return this.Bs.add(e), ws.resolve();\n    }\n    Us(t, e) {\n        return ws.resolve(this.Bs.getEntries(e));\n    }\n}\n\n/**\n * Internal implementation of the collection-parent index exposed by MemoryIndexManager.\n * Also used for in-memory caching by IndexedDbIndexManager and initial index population\n * in indexeddb_schema.ts\n */ class wi {\n    constructor() {\n        this.index = {};\n    }\n    // Returns false if the entry already existed.\n    add(t) {\n        const e = t.tt(), n = t.X(), s = this.index[e] || new on(G.H), i = !s.has(n);\n        return this.index[e] = s.add(n), i;\n    }\n    has(t) {\n        const e = t.tt(), n = t.X(), s = this.index[e];\n        return s && s.has(n);\n    }\n    getEntries(t) {\n        return (this.index[t] || new on(G.H)).it();\n    }\n}\n\n/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * A persisted implementation of IndexManager.\n */ class Ei {\n    constructor() {\n        /**\n         * An in-memory copy of the index entries we've already written since the SDK\n         * launched. Used to avoid re-writing the same entry repeatedly.\n         *\n         * This is *NOT* a complete cache of what's in persistence and so can never be used to\n         * satisfy reads.\n         */\n        this.Qs = new wi;\n    }\n    /**\n     * Adds a new entry to the collection parent index.\n     *\n     * Repeated calls for the same collectionPath should be avoided within a\n     * transaction as IndexedDbIndexManager only caches writes once a transaction\n     * has been committed.\n     */    qs(t, e) {\n        if (!this.Qs.has(e)) {\n            const n = e.tt(), s = e.X();\n            t.gs((() => {\n                // Add the collection to the in memory cache only if the transaction was\n                // successfully committed.\n                this.Qs.add(e);\n            }));\n            const i = {\n                collectionId: n,\n                parent: Ss(s)\n            };\n            return Ti(t).put(i);\n        }\n        return ws.resolve();\n    }\n    Us(t, e) {\n        const n = [], s = IDBKeyRange.bound([ e, \"\" ], [ x(e), \"\" ], \n        /*lowerOpen=*/ !1, \n        /*upperOpen=*/ !0);\n        return Ti(t).rs(s).next((t => {\n            for (const s of t) {\n                // This collectionId guard shouldn't be necessary (and isn't as long\n                // as we're running in a real browser), but there's a bug in\n                // indexeddbshim that breaks our range in our tests running in node:\n                // https://github.com/axemclion/IndexedDBShim/issues/334\n                if (s.collectionId !== e) break;\n                n.push(xs(s.parent));\n            }\n            return n;\n        }));\n    }\n}\n\n/**\n * Helper to get a typed SimpleDbStore for the collectionParents\n * document store.\n */ function Ti(t) {\n    return Ys(t, Ws.store);\n}\n\n/**\n * @license\n * Copyright 2018 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ const Ii = {\n    Ks: !1,\n    Ws: 0,\n    js: 0,\n    Gs: 0\n};\n\nclass mi {\n    constructor(\n    // When we attempt to collect, we will only do so if the cache size is greater than this\n    // threshold. Passing `COLLECTION_DISABLED` here will cause collection to always be skipped.\n    t, \n    // The percentage of sequence numbers that we will attempt to collect\n    e, \n    // A cap on the total number of sequence numbers that will be collected. This prevents\n    // us from collecting a huge number of sequence numbers if the cache has grown very large.\n    n) {\n        this.zs = t, this.Hs = e, this.Js = n;\n    }\n    static Ys(t) {\n        return new mi(t, mi.Xs, mi.Zs);\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Verifies the error thrown by a LocalStore operation. If a LocalStore\n * operation fails because the primary lease has been taken by another client,\n * we ignore the error (the persistence layer will immediately call\n * `applyPrimaryLease` to propagate the primary state change). All other errors\n * are re-thrown.\n *\n * @param err - An error returned by a LocalStore operation.\n * @returns A Promise that resolves after we recovered, or the original error.\n */\nasync function Ai(t) {\n    if (t.code !== F.FAILED_PRECONDITION || t.message !== bs) throw t;\n    R(\"LocalStore\", \"Unexpectedly lost primary lease\");\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * A map implementation that uses objects as keys. Objects must have an\n * associated equals function and must be immutable. Entries in the map are\n * stored together with the key being produced from the mapKeyFn. This map\n * automatically handles collisions of keys.\n */ mi.Xs = 10, mi.Zs = 1e3, mi.ti = new mi(41943040, mi.Xs, mi.Zs), mi.ei = new mi(-1, 0, 0);\n\nclass Ri {\n    constructor(t, e) {\n        this.ni = t, this.si = e, \n        /**\n         * The inner map for a key/value pair. Due to the possibility of collisions we\n         * keep a list of entries that we do a linear search through to find an actual\n         * match. Note that collisions should be rare, so we still expect near\n         * constant time lookups in practice.\n         */\n        this.ii = {};\n    }\n    /** Get a value for this key, or undefined if it does not exist. */    get(t) {\n        const e = this.ni(t), n = this.ii[e];\n        if (void 0 !== n) for (const [e, s] of n) if (this.si(e, t)) return s;\n    }\n    has(t) {\n        return void 0 !== this.get(t);\n    }\n    /** Put this key and value in the map. */    set(t, e) {\n        const n = this.ni(t), s = this.ii[n];\n        if (void 0 !== s) {\n            for (let n = 0; n < s.length; n++) if (this.si(s[n][0], t)) return void (s[n] = [ t, e ]);\n            s.push([ t, e ]);\n        } else this.ii[n] = [ [ t, e ] ];\n    }\n    /**\n     * Remove this key from the map. Returns a boolean if anything was deleted.\n     */    delete(t) {\n        const e = this.ni(t), n = this.ii[e];\n        if (void 0 === n) return !1;\n        for (let s = 0; s < n.length; s++) if (this.si(n[s][0], t)) return 1 === n.length ? delete this.ii[e] : n.splice(s, 1), \n        !0;\n        return !1;\n    }\n    forEach(t) {\n        X(this.ii, ((e, n) => {\n            for (const [e, s] of n) t(e, s);\n        }));\n    }\n    et() {\n        return Z(this.ii);\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * An in-memory buffer of entries to be written to a RemoteDocumentCache.\n * It can be used to batch up a set of changes to be written to the cache, but\n * additionally supports reading entries back with the `getEntry()` method,\n * falling back to the underlying RemoteDocumentCache if no entry is\n * buffered.\n *\n * Entries added to the cache *must* be read first. This is to facilitate\n * calculating the size delta of the pending changes.\n *\n * PORTING NOTE: This class was implemented then removed from other platforms.\n * If byte-counting ends up being needed on the other platforms, consider\n * porting this class as part of that implementation work.\n */ class Pi {\n    constructor() {\n        // A mapping of document key to the new cache entry that should be written (or null if any\n        // existing cache entry should be removed).\n        this.ri = new Ri((t => t.toString()), ((t, e) => t.isEqual(e))), this.oi = !1;\n    }\n    ci(t) {\n        const e = this.ri.get(t);\n        return e ? e.readTime : W.min();\n    }\n    /**\n     * Buffers a `RemoteDocumentCache.addEntry()` call.\n     *\n     * You can only modify documents that have already been retrieved via\n     * `getEntry()/getEntries()` (enforced via IndexedDbs `apply()`).\n     */    ai(t, e) {\n        this.ui(), this.ri.set(t.key, {\n            hi: t,\n            readTime: e\n        });\n    }\n    /**\n     * Buffers a `RemoteDocumentCache.removeEntry()` call.\n     *\n     * You can only remove documents that have already been retrieved via\n     * `getEntry()/getEntries()` (enforced via IndexedDbs `apply()`).\n     */    li(t, e = null) {\n        this.ui(), this.ri.set(t, {\n            hi: null,\n            readTime: e\n        });\n    }\n    /**\n     * Looks up an entry in the cache. The buffered changes will first be checked,\n     * and if no buffered change applies, this will forward to\n     * `RemoteDocumentCache.getEntry()`.\n     *\n     * @param transaction - The transaction in which to perform any persistence\n     *     operations.\n     * @param documentKey - The key of the entry to look up.\n     * @returns The cached Document or NoDocument entry, or null if we have\n     *     nothing cached.\n     */    _i(t, e) {\n        this.ui();\n        const n = this.ri.get(e);\n        return void 0 !== n ? ws.resolve(n.hi) : this.fi(t, e);\n    }\n    /**\n     * Looks up several entries in the cache, forwarding to\n     * `RemoteDocumentCache.getEntry()`.\n     *\n     * @param transaction - The transaction in which to perform any persistence\n     *     operations.\n     * @param documentKeys - The keys of the entries to look up.\n     * @returns A map of cached `Document`s or `NoDocument`s, indexed by key. If\n     *     an entry cannot be found, the corresponding key will be mapped to a\n     *     null value.\n     */    getEntries(t, e) {\n        return this.di(t, e);\n    }\n    /**\n     * Applies buffered changes to the underlying RemoteDocumentCache, using\n     * the provided transaction.\n     */    apply(t) {\n        return this.ui(), this.oi = !0, this.wi(t);\n    }\n    /** Helper to assert this.changes is not null  */    ui() {}\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Delete a mutation batch and the associated document mutations.\n * @returns A PersistencePromise of the document mutations that were removed.\n */ function yi(t, e, n) {\n    const s = t.store(ks.store), i = t.store(Ms.store), r = [], o = IDBKeyRange.only(n.batchId);\n    let c = 0;\n    const a = s.hs({\n        range: o\n    }, ((t, e, n) => (c++, n.delete())));\n    r.push(a.next((() => {\n        p(1 === c);\n    })));\n    const u = [];\n    for (const t of n.mutations) {\n        const s = Ms.key(e, t.key.path, n.batchId);\n        r.push(i.delete(s)), u.push(t.key);\n    }\n    return ws.Ln(r).next((() => u));\n}\n\n/**\n * Returns an approximate size for the given document.\n */ function gi(t) {\n    let e;\n    if (t.document) e = t.document; else if (t.unknownDocument) e = t.unknownDocument; else {\n        if (!t.noDocument) throw V();\n        e = t.noDocument;\n    }\n    return JSON.stringify(e).length;\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/** A mutation queue for a specific user, backed by IndexedDB. */ class Vi {\n    constructor(\n    /**\n     * The normalized userId (e.g. null UID => \"\" userId) used to store /\n     * retrieve mutations.\n     */\n    t, e, n, s) {\n        this.userId = t, this.Qt = e, this.Ei = n, this.Ti = s, \n        /**\n         * Caches the document keys for pending mutation batches. If the mutation\n         * has been removed from IndexedDb, the cached value may continue to\n         * be used to retrieve the batch's document keys. To remove a cached value\n         * locally, `removeCachedMutationKeys()` should be invoked either directly\n         * or through `removeMutationBatches()`.\n         *\n         * With multi-tab, when the primary client acknowledges or rejects a mutation,\n         * this cache is used by secondary clients to invalidate the local\n         * view of the documents that were previously affected by the mutation.\n         */\n        // PORTING NOTE: Multi-tab only.\n        this.Ii = {};\n    }\n    /**\n     * Creates a new mutation queue for the given user.\n     * @param user - The user for which to create a mutation queue.\n     * @param serializer - The serializer to use when persisting to IndexedDb.\n     */    static mi(t, e, n, s) {\n        // TODO(mcg): Figure out what constraints there are on userIDs\n        // In particular, are there any reserved characters? are empty ids allowed?\n        // For the moment store these together in the same mutations table assuming\n        // that empty userIDs aren't allowed.\n        p(\"\" !== t.uid);\n        const i = t.m() ? t.uid : \"\";\n        return new Vi(i, e, n, s);\n    }\n    Ai(t) {\n        let e = !0;\n        const n = IDBKeyRange.bound([ this.userId, Number.NEGATIVE_INFINITY ], [ this.userId, Number.POSITIVE_INFINITY ]);\n        return bi(t).hs({\n            index: ks.userMutationsIndex,\n            range: n\n        }, ((t, n, s) => {\n            e = !1, s.done();\n        })).next((() => e));\n    }\n    Ri(t, e, n, s) {\n        const i = vi(t), r = bi(t);\n        // The IndexedDb implementation in Chrome (and Firefox) does not handle\n        // compound indices that include auto-generated keys correctly. To ensure\n        // that the index entry is added correctly in all browsers, we perform two\n        // writes: The first write is used to retrieve the next auto-generated Batch\n        // ID, and the second write populates the index and stores the actual\n        // mutation batch.\n        // See: https://bugs.chromium.org/p/chromium/issues/detail?id=701972\n        // We write an empty object to obtain key\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        return r.add({}).next((o => {\n            p(\"number\" == typeof o);\n            const c = new Xs(o, e, n, s), a = function(t, e, n) {\n                const s = n.baseMutations.map((e => Jn(t.Os, e))), i = n.mutations.map((e => Jn(t.Os, e)));\n                return new ks(e, n.batchId, n.vs.toMillis(), s, i);\n            }(this.Qt, this.userId, c), u = [];\n            let h = new on(((t, e) => D(t.rt(), e.rt())));\n            for (const t of s) {\n                const e = Ms.key(this.userId, t.key.path, o);\n                h = h.add(t.key.path.X()), u.push(r.put(a)), u.push(i.put(e, Ms.PLACEHOLDER));\n            }\n            return h.forEach((e => {\n                u.push(this.Ei.qs(t, e));\n            })), t.gs((() => {\n                this.Ii[o] = c.keys();\n            })), ws.Ln(u).next((() => c));\n        }));\n    }\n    Pi(t, e) {\n        return bi(t).get(e).next((t => t ? (p(t.userId === this.userId), ci(this.Qt, t)) : null));\n    }\n    /**\n     * Returns the document keys for the mutation batch with the given batchId.\n     * For primary clients, this method returns `null` after\n     * `removeMutationBatches()` has been called. Secondary clients return a\n     * cached result until `removeCachedMutationKeys()` is invoked.\n     */\n    // PORTING NOTE: Multi-tab only.\n    yi(t, e) {\n        return this.Ii[e] ? ws.resolve(this.Ii[e]) : this.Pi(t, e).next((t => {\n            if (t) {\n                const n = t.keys();\n                return this.Ii[e] = n, n;\n            }\n            return null;\n        }));\n    }\n    gi(t, e) {\n        const n = e + 1, s = IDBKeyRange.lowerBound([ this.userId, n ]);\n        let i = null;\n        return bi(t).hs({\n            index: ks.userMutationsIndex,\n            range: s\n        }, ((t, e, s) => {\n            e.userId === this.userId && (p(e.batchId >= n), i = ci(this.Qt, e)), s.done();\n        })).next((() => i));\n    }\n    Vi(t) {\n        const e = IDBKeyRange.upperBound([ this.userId, Number.POSITIVE_INFINITY ]);\n        let n = -1;\n        return bi(t).hs({\n            index: ks.userMutationsIndex,\n            range: e,\n            reverse: !0\n        }, ((t, e, s) => {\n            n = e.batchId, s.done();\n        })).next((() => n));\n    }\n    pi(t) {\n        const e = IDBKeyRange.bound([ this.userId, -1 ], [ this.userId, Number.POSITIVE_INFINITY ]);\n        return bi(t).rs(ks.userMutationsIndex, e).next((t => t.map((t => ci(this.Qt, t)))));\n    }\n    bi(t, e) {\n        // Scan the document-mutation index starting with a prefix starting with\n        // the given documentKey.\n        const n = Ms.prefixForPath(this.userId, e.path), s = IDBKeyRange.lowerBound(n), i = [];\n        return vi(t).hs({\n            range: s\n        }, ((n, s, r) => {\n            const [o, c, a] = n, u = xs(c);\n            // Only consider rows matching exactly the specific key of\n            // interest. Note that because we order by path first, and we\n            // order terminators before path separators, we'll encounter all\n            // the index rows for documentKey contiguously. In particular, all\n            // the rows for documentKey will occur before any rows for\n            // documents nested in a subcollection beneath documentKey so we\n            // can stop as soon as we hit any such row.\n                        if (o === this.userId && e.path.isEqual(u)) \n            // Look up the mutation batch in the store.\n            return bi(t).get(a).next((t => {\n                if (!t) throw V();\n                p(t.userId === this.userId), i.push(ci(this.Qt, t));\n            }));\n            r.done();\n        })).next((() => i));\n    }\n    vi(t, e) {\n        let n = new on(D);\n        const s = [];\n        return e.forEach((e => {\n            const i = Ms.prefixForPath(this.userId, e.path), r = IDBKeyRange.lowerBound(i), o = vi(t).hs({\n                range: r\n            }, ((t, s, i) => {\n                const [r, o, c] = t, a = xs(o);\n                // Only consider rows matching exactly the specific key of\n                // interest. Note that because we order by path first, and we\n                // order terminators before path separators, we'll encounter all\n                // the index rows for documentKey contiguously. In particular, all\n                // the rows for documentKey will occur before any rows for\n                // documents nested in a subcollection beneath documentKey so we\n                // can stop as soon as we hit any such row.\n                                r === this.userId && e.path.isEqual(a) ? n = n.add(c) : i.done();\n            }));\n            s.push(o);\n        })), ws.Ln(s).next((() => this.Si(t, n)));\n    }\n    Di(t, e) {\n        const n = e.path, s = n.length + 1, i = Ms.prefixForPath(this.userId, n), r = IDBKeyRange.lowerBound(i);\n        // Collect up unique batchIDs encountered during a scan of the index. Use a\n        // SortedSet to accumulate batch IDs so they can be traversed in order in a\n        // scan of the main table.\n        let o = new on(D);\n        return vi(t).hs({\n            range: r\n        }, ((t, e, i) => {\n            const [r, c, a] = t, u = xs(c);\n            r === this.userId && n.nt(u) ? \n            // Rows with document keys more than one segment longer than the\n            // query path can't be matches. For example, a query on 'rooms'\n            // can't match the document /rooms/abc/messages/xyx.\n            // TODO(mcg): we'll need a different scanner when we implement\n            // ancestor queries.\n            u.length === s && (o = o.add(a)) : i.done();\n        })).next((() => this.Si(t, o)));\n    }\n    Si(t, e) {\n        const n = [], s = [];\n        // TODO(rockwood): Implement this using iterate.\n        return e.forEach((e => {\n            s.push(bi(t).get(e).next((t => {\n                if (null === t) throw V();\n                p(t.userId === this.userId), n.push(ci(this.Qt, t));\n            })));\n        })), ws.Ln(s).next((() => n));\n    }\n    Ci(t, e) {\n        return yi(t.ps, this.userId, e).next((n => (t.gs((() => {\n            this.xi(e.batchId);\n        })), ws.forEach(n, (e => this.Ti.Ni(t, e))))));\n    }\n    /**\n     * Clears the cached keys for a mutation batch. This method should be\n     * called by secondary clients after they process mutation updates.\n     *\n     * Note that this method does not have to be called from primary clients as\n     * the corresponding cache entries are cleared when an acknowledged or\n     * rejected batch is removed from the mutation queue.\n     */\n    // PORTING NOTE: Multi-tab only\n    xi(t) {\n        delete this.Ii[t];\n    }\n    Fi(t) {\n        return this.Ai(t).next((e => {\n            if (!e) return ws.resolve();\n            // Verify that there are no entries in the documentMutations index if\n            // the queue is empty.\n                        const n = IDBKeyRange.lowerBound(Ms.prefixForUser(this.userId)), s = [];\n            return vi(t).hs({\n                range: n\n            }, ((t, e, n) => {\n                if (t[0] === this.userId) {\n                    const e = xs(t[1]);\n                    s.push(e);\n                } else n.done();\n            })).next((() => {\n                p(0 === s.length);\n            }));\n        }));\n    }\n    Oi(t, e) {\n        return pi(t, this.userId, e);\n    }\n    // PORTING NOTE: Multi-tab only (state is held in memory in other clients).\n    /** Returns the mutation queue's metadata from IndexedDb. */\n    ki(t) {\n        return Si(t).get(this.userId).next((t => t || new Os(this.userId, -1, \n        /*lastStreamToken=*/ \"\")));\n    }\n}\n\n/**\n * @returns true if the mutation queue for the given user contains a pending\n *         mutation for the given key.\n */ function pi(t, e, n) {\n    const s = Ms.prefixForPath(e, n.path), i = s[1], r = IDBKeyRange.lowerBound(s);\n    let o = !1;\n    return vi(t).hs({\n        range: r,\n        us: !0\n    }, ((t, n, s) => {\n        const [r, c, /*batchID*/ a] = t;\n        r === e && c === i && (o = !0), s.done();\n    })).next((() => o));\n}\n\n/** Returns true if any mutation queue contains the given document. */\n/**\n * Helper to get a typed SimpleDbStore for the mutations object store.\n */\nfunction bi(t) {\n    return Ys(t, ks.store);\n}\n\n/**\n * Helper to get a typed SimpleDbStore for the mutationQueues object store.\n */ function vi(t) {\n    return Ys(t, Ms.store);\n}\n\n/**\n * Helper to get a typed SimpleDbStore for the mutationQueues object store.\n */ function Si(t) {\n    return Ys(t, Os.store);\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/** Offset to ensure non-overlapping target ids. */\n/**\n * Generates monotonically increasing target IDs for sending targets to the\n * watch stream.\n *\n * The client constructs two generators, one for the target cache, and one for\n * for the sync engine (to generate limbo documents targets). These\n * generators produce non-overlapping IDs (by using even and odd IDs\n * respectively).\n *\n * By separating the target ID space, the query cache can generate target IDs\n * that persist across client restarts, while sync engine can independently\n * generate in-memory target IDs that are transient and can be reused after a\n * restart.\n */\nclass Di {\n    constructor(t) {\n        this.Mi = t;\n    }\n    next() {\n        return this.Mi += 2, this.Mi;\n    }\n    static Li() {\n        // The target cache generator must return '2' in its first call to `next()`\n        // as there is no differentiation in the protocol layer between an unset\n        // number and the number '0'. If we were to sent a target with target ID\n        // '0', the backend would consider it unset and replace it with its own ID.\n        return new Di(0);\n    }\n    static $i() {\n        // Sync engine assigns target IDs for limbo document detection.\n        return new Di(-1);\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ class Ci {\n    constructor(t, e) {\n        this.Ti = t, this.Qt = e;\n    }\n    // PORTING NOTE: We don't cache global metadata for the target cache, since\n    // some of it (in particular `highestTargetId`) can be modified by secondary\n    // tabs. We could perhaps be more granular (and e.g. still cache\n    // `lastRemoteSnapshotVersion` in memory) but for simplicity we currently go\n    // to IndexedDb whenever we need to read metadata. We can revisit if it turns\n    // out to have a meaningful performance impact.\n    Bi(t) {\n        return this.qi(t).next((e => {\n            const n = new Di(e.highestTargetId);\n            return e.highestTargetId = n.next(), this.Ui(t, e).next((() => e.highestTargetId));\n        }));\n    }\n    Qi(t) {\n        return this.qi(t).next((t => W.K(new K(t.lastRemoteSnapshotVersion.seconds, t.lastRemoteSnapshotVersion.nanoseconds))));\n    }\n    Ki(t) {\n        return this.qi(t).next((t => t.highestListenSequenceNumber));\n    }\n    Wi(t, e, n) {\n        return this.qi(t).next((s => (s.highestListenSequenceNumber = e, n && (s.lastRemoteSnapshotVersion = n.j()), \n        e > s.highestListenSequenceNumber && (s.highestListenSequenceNumber = e), this.Ui(t, s))));\n    }\n    ji(t, e) {\n        return this.Gi(t, e).next((() => this.qi(t).next((n => (n.targetCount += 1, this.zi(e, n), \n        this.Ui(t, n))))));\n    }\n    Hi(t, e) {\n        return this.Gi(t, e);\n    }\n    Ji(t, e) {\n        return this.Yi(t, e.targetId).next((() => xi(t).delete(e.targetId))).next((() => this.qi(t))).next((e => (p(e.targetCount > 0), \n        e.targetCount -= 1, this.Ui(t, e))));\n    }\n    /**\n     * Drops any targets with sequence number less than or equal to the upper bound, excepting those\n     * present in `activeTargetIds`. Document associations for the removed targets are also removed.\n     * Returns the number of targets removed.\n     */    Xi(t, e, n) {\n        let s = 0;\n        const i = [];\n        return xi(t).hs(((r, o) => {\n            const c = ai(o);\n            c.sequenceNumber <= e && null === n.get(c.targetId) && (s++, i.push(this.Ji(t, c)));\n        })).next((() => ws.Ln(i))).next((() => s));\n    }\n    /**\n     * Call provided function with each `TargetData` that we have cached.\n     */    In(t, e) {\n        return xi(t).hs(((t, n) => {\n            const s = ai(n);\n            e(s);\n        }));\n    }\n    qi(t) {\n        return Ni(t).get(Ks.key).next((t => (p(null !== t), t)));\n    }\n    Ui(t, e) {\n        return Ni(t).put(Ks.key, e);\n    }\n    Gi(t, e) {\n        return xi(t).put(ui(this.Qt, e));\n    }\n    /**\n     * In-place updates the provided metadata to account for values in the given\n     * TargetData. Saving is done separately. Returns true if there were any\n     * changes to the metadata.\n     */    zi(t, e) {\n        let n = !1;\n        return t.targetId > e.highestTargetId && (e.highestTargetId = t.targetId, n = !0), \n        t.sequenceNumber > e.highestListenSequenceNumber && (e.highestListenSequenceNumber = t.sequenceNumber, \n        n = !0), n;\n    }\n    Zi(t) {\n        return this.qi(t).next((t => t.targetCount));\n    }\n    tr(t, e) {\n        // Iterating by the canonicalId may yield more than one result because\n        // canonicalId values are not required to be unique per target. This query\n        // depends on the queryTargets index to be efficient.\n        const n = Nt(e), s = IDBKeyRange.bound([ n, Number.NEGATIVE_INFINITY ], [ n, Number.POSITIVE_INFINITY ]);\n        let i = null;\n        return xi(t).hs({\n            range: s,\n            index: Us.queryTargetsIndexName\n        }, ((t, n, s) => {\n            const r = ai(n);\n            // After finding a potential match, check that the target is\n            // actually equal to the requested target.\n                        Ot(e, r.target) && (i = r, s.done());\n        })).next((() => i));\n    }\n    er(t, e, n) {\n        // PORTING NOTE: The reverse index (documentsTargets) is maintained by\n        // IndexedDb.\n        const s = [], i = Fi(t);\n        return e.forEach((e => {\n            const r = Ss(e.path);\n            s.push(i.put(new Qs(n, r))), s.push(this.Ti.nr(t, n, e));\n        })), ws.Ln(s);\n    }\n    sr(t, e, n) {\n        // PORTING NOTE: The reverse index (documentsTargets) is maintained by\n        // IndexedDb.\n        const s = Fi(t);\n        return ws.forEach(e, (e => {\n            const i = Ss(e.path);\n            return ws.Ln([ s.delete([ n, i ]), this.Ti.ir(t, n, e) ]);\n        }));\n    }\n    Yi(t, e) {\n        const n = Fi(t), s = IDBKeyRange.bound([ e ], [ e + 1 ], \n        /*lowerOpen=*/ !1, \n        /*upperOpen=*/ !0);\n        return n.delete(s);\n    }\n    rr(t, e) {\n        const n = IDBKeyRange.bound([ e ], [ e + 1 ], \n        /*lowerOpen=*/ !1, \n        /*upperOpen=*/ !0), s = Fi(t);\n        let i = En();\n        return s.hs({\n            range: n,\n            us: !0\n        }, ((t, e, n) => {\n            const s = xs(t[1]), r = new J(s);\n            i = i.add(r);\n        })).next((() => i));\n    }\n    Oi(t, e) {\n        const n = Ss(e.path), s = IDBKeyRange.bound([ n ], [ x(n) ], \n        /*lowerOpen=*/ !1, \n        /*upperOpen=*/ !0);\n        let i = 0;\n        return Fi(t).hs({\n            index: Qs.documentTargetsIndex,\n            us: !0,\n            range: s\n        }, (([t, e], n, s) => {\n            // Having a sentinel row for a document does not count as containing that document;\n            // For the target cache, containing the document means the document is part of some\n            // target.\n            0 !== t && (i++, s.done());\n        })).next((() => i > 0));\n    }\n    /**\n     * Looks up a TargetData entry by target ID.\n     *\n     * @param targetId - The target ID of the TargetData entry to look up.\n     * @returns The cached TargetData entry, or null if the cache has no entry for\n     * the target.\n     */\n    // PORTING NOTE: Multi-tab only.\n    Sn(t, e) {\n        return xi(t).get(e).next((t => t ? ai(t) : null));\n    }\n}\n\n/**\n * Helper to get a typed SimpleDbStore for the queries object store.\n */ function xi(t) {\n    return Ys(t, Us.store);\n}\n\n/**\n * Helper to get a typed SimpleDbStore for the target globals object store.\n */ function Ni(t) {\n    return Ys(t, Ks.store);\n}\n\n/**\n * Helper to get a typed SimpleDbStore for the document target object store.\n */ function Fi(t) {\n    return Ys(t, Qs.store);\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ function Oi([t, e], [n, s]) {\n    const i = D(t, n);\n    return 0 === i ? D(e, s) : i;\n}\n\n/**\n * Used to calculate the nth sequence number. Keeps a rolling buffer of the\n * lowest n values passed to `addElement`, and finally reports the largest of\n * them in `maxValue`.\n */ class ki {\n    constructor(t) {\n        this.cr = t, this.buffer = new on(Oi), this.ar = 0;\n    }\n    ur() {\n        return ++this.ar;\n    }\n    hr(t) {\n        const e = [ t, this.ur() ];\n        if (this.buffer.size < this.cr) this.buffer = this.buffer.add(e); else {\n            const t = this.buffer.last();\n            Oi(e, t) < 0 && (this.buffer = this.buffer.delete(t).add(e));\n        }\n    }\n    get maxValue() {\n        // Guaranteed to be non-empty. If we decide we are not collecting any\n        // sequence numbers, nthSequenceNumber below short-circuits. If we have\n        // decided that we are collecting n sequence numbers, it's because n is some\n        // percentage of the existing sequence numbers. That means we should never\n        // be in a situation where we are collecting sequence numbers but don't\n        // actually have any.\n        return this.buffer.last()[0];\n    }\n}\n\n/**\n * This class is responsible for the scheduling of LRU garbage collection. It handles checking\n * whether or not GC is enabled, as well as which delay to use before the next run.\n */ class Mi {\n    constructor(t, e) {\n        this.lr = t, this._s = e, this._r = !1, this.dr = null;\n    }\n    start(t) {\n        -1 !== this.lr.params.zs && this.wr(t);\n    }\n    stop() {\n        this.dr && (this.dr.cancel(), this.dr = null);\n    }\n    get Er() {\n        return null !== this.dr;\n    }\n    wr(t) {\n        const e = this._r ? 3e5 : 6e4;\n        R(\"LruGarbageCollector\", `Garbage collection scheduled in ${e}ms`), this.dr = this._s.Tr(\"lru_garbage_collection\" /* LruGarbageCollection */ , e, (async () => {\n            this.dr = null, this._r = !0;\n            try {\n                await t.Ir(this.lr);\n            } catch (t) {\n                As(t) ? R(\"LruGarbageCollector\", \"Ignoring IndexedDB error during garbage collection: \", t) : await Ai(t);\n            }\n            await this.wr(t);\n        }));\n    }\n}\n\n/** Implements the steps for LRU garbage collection. */ class Li {\n    constructor(t, e) {\n        this.mr = t, this.params = e;\n    }\n    Ar(t, e) {\n        return this.mr.Rr(t).next((t => Math.floor(e / 100 * t)));\n    }\n    Pr(t, e) {\n        if (0 === e) return ws.resolve(Q.q);\n        const n = new ki(e);\n        return this.mr.In(t, (t => n.hr(t.sequenceNumber))).next((() => this.mr.yr(t, (t => n.hr(t))))).next((() => n.maxValue));\n    }\n    Xi(t, e, n) {\n        return this.mr.Xi(t, e, n);\n    }\n    gr(t, e) {\n        return this.mr.gr(t, e);\n    }\n    Vr(t, e) {\n        return -1 === this.params.zs ? (R(\"LruGarbageCollector\", \"Garbage collection skipped; disabled\"), \n        ws.resolve(Ii)) : this.pr(t).next((n => n < this.params.zs ? (R(\"LruGarbageCollector\", `Garbage collection skipped; Cache size ${n} is lower than threshold ` + this.params.zs), \n        Ii) : this.br(t, e)));\n    }\n    pr(t) {\n        return this.mr.pr(t);\n    }\n    br(t, n) {\n        let s, i, r, o, c, a, u;\n        const h = Date.now();\n        return this.Ar(t, this.params.Hs).next((e => (\n        // Cap at the configured max\n        e > this.params.Js ? (R(\"LruGarbageCollector\", `Capping sequence numbers to collect down to the maximum of ${this.params.Js} from ` + e), \n        i = this.params.Js) : i = e, o = Date.now(), this.Pr(t, i)))).next((e => (s = e, \n        c = Date.now(), this.Xi(t, s, n)))).next((e => (r = e, a = Date.now(), this.gr(t, s)))).next((t => {\n            if (u = Date.now(), A() <= e.DEBUG) {\n                R(\"LruGarbageCollector\", `LRU Garbage Collection\\n\\tCounted targets in ${o - h}ms\\n\\tDetermined least recently used ${i} in ` + (c - o) + \"ms\\n\" + `\\tRemoved ${r} targets in ` + (a - c) + \"ms\\n\" + `\\tRemoved ${t} documents in ` + (u - a) + \"ms\\n\" + `Total Duration: ${u - h}ms`);\n            }\n            return ws.resolve({\n                Ks: !0,\n                Ws: i,\n                js: r,\n                Gs: t\n            });\n        }));\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/** Provides LRU functionality for IndexedDB persistence. */\nclass $i {\n    constructor(t, e) {\n        this.db = t, this.lr = function(t, e) {\n            return new Li(t, e);\n        }(this, e);\n    }\n    Rr(t) {\n        const e = this.vr(t);\n        return this.db.Sr().Zi(t).next((t => e.next((e => t + e))));\n    }\n    vr(t) {\n        let e = 0;\n        return this.yr(t, (t => {\n            e++;\n        })).next((() => e));\n    }\n    In(t, e) {\n        return this.db.Sr().In(t, e);\n    }\n    yr(t, e) {\n        return this.Dr(t, ((t, n) => e(n)));\n    }\n    nr(t, e, n) {\n        return Bi(t, n);\n    }\n    ir(t, e, n) {\n        return Bi(t, n);\n    }\n    Xi(t, e, n) {\n        return this.db.Sr().Xi(t, e, n);\n    }\n    Ni(t, e) {\n        return Bi(t, e);\n    }\n    /**\n     * Returns true if anything would prevent this document from being garbage\n     * collected, given that the document in question is not present in any\n     * targets and has a sequence number less than or equal to the upper bound for\n     * the collection run.\n     */    Cr(t, e) {\n        return function(t, e) {\n            let n = !1;\n            return Si(t).ls((s => pi(t, s, e).next((t => (t && (n = !0), ws.resolve(!t)))))).next((() => n));\n        }(t, e);\n    }\n    gr(t, e) {\n        const n = this.db.Fr().Nr(), s = [];\n        let i = 0;\n        return this.Dr(t, ((r, o) => {\n            if (o <= e) {\n                const e = this.Cr(t, r).next((e => {\n                    if (!e) \n                    // Our size accounting requires us to read all documents before\n                    // removing them.\n                    return i++, n._i(t, r).next((() => (n.li(r), Fi(t).delete([ 0, Ss(r.path) ]))));\n                }));\n                s.push(e);\n            }\n        })).next((() => ws.Ln(s))).next((() => n.apply(t))).next((() => i));\n    }\n    removeTarget(t, e) {\n        const n = e.Mt(t.bs);\n        return this.db.Sr().Hi(t, n);\n    }\n    Or(t, e) {\n        return Bi(t, e);\n    }\n    /**\n     * Call provided function for each document in the cache that is 'orphaned'. Orphaned\n     * means not a part of any target, so the only entry in the target-document index for\n     * that document will be the sentinel row (targetId 0), which will also have the sequence\n     * number for the last time the document was accessed.\n     */    Dr(t, e) {\n        const n = Fi(t);\n        let s, i = Q.q;\n        return n.hs({\n            index: Qs.documentTargetsIndex\n        }, (([t, n], {path: r, sequenceNumber: o}) => {\n            0 === t ? (\n            // if nextToReport is valid, report it, this is a new key so the\n            // last one must not be a member of any targets.\n            i !== Q.q && e(new J(xs(s)), i), \n            // set nextToReport to be this sequence number. It's the next one we\n            // might report, if we don't find any targets for this document.\n            // Note that the sequence number must be defined when the targetId\n            // is 0.\n            i = o, s = r) : \n            // set nextToReport to be invalid, we know we don't need to report\n            // this one since we found a target for it.\n            i = Q.q;\n        })).next((() => {\n            // Since we report sequence numbers after getting to the next key, we\n            // need to check if the last key we iterated over was an orphaned\n            // document and report it.\n            i !== Q.q && e(new J(xs(s)), i);\n        }));\n    }\n    pr(t) {\n        return this.db.Fr().kr(t);\n    }\n}\n\nfunction Bi(t, e) {\n    return Fi(t).put(\n    /**\n * @returns A value suitable for writing a sentinel row in the target-document\n * store.\n */\n    function(t, e) {\n        return new Qs(0, Ss(t.path), e);\n    }(e, t.bs));\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * The RemoteDocumentCache for IndexedDb. To construct, invoke\n * `newIndexedDbRemoteDocumentCache()`.\n */ class qi {\n    /**\n     * @param serializer - The document serializer.\n     * @param indexManager - The query indexes that need to be maintained.\n     */\n    constructor(t, e) {\n        this.Qt = t, this.Ei = e;\n    }\n    /**\n     * Adds the supplied entries to the cache.\n     *\n     * All calls of `addEntry` are required to go through the RemoteDocumentChangeBuffer\n     * returned by `newChangeBuffer()` to ensure proper accounting of metadata.\n     */    ai(t, e, n) {\n        return Ki(t).put(Wi(e), n);\n    }\n    /**\n     * Removes a document from the cache.\n     *\n     * All calls of `removeEntry`  are required to go through the RemoteDocumentChangeBuffer\n     * returned by `newChangeBuffer()` to ensure proper accounting of metadata.\n     */    li(t, e) {\n        const n = Ki(t), s = Wi(e);\n        return n.delete(s);\n    }\n    /**\n     * Updates the current cache size.\n     *\n     * Callers to `addEntry()` and `removeEntry()` *must* call this afterwards to update the\n     * cache's metadata.\n     */    updateMetadata(t, e) {\n        return this.getMetadata(t).next((n => (n.byteSize += e, this.Mr(t, n))));\n    }\n    _i(t, e) {\n        return Ki(t).get(Wi(e)).next((t => this.Lr(t)));\n    }\n    /**\n     * Looks up an entry in the cache.\n     *\n     * @param documentKey - The key of the entry to look up.\n     * @returns The cached MaybeDocument entry and its size, or null if we have\n     * nothing cached.\n     */    $r(t, e) {\n        return Ki(t).get(Wi(e)).next((t => {\n            const e = this.Lr(t);\n            return e ? {\n                hi: e,\n                size: gi(t)\n            } : null;\n        }));\n    }\n    getEntries(t, e) {\n        let n = hn();\n        return this.Br(t, e, ((t, e) => {\n            const s = this.Lr(e);\n            n = n.zt(t, s);\n        })).next((() => n));\n    }\n    /**\n     * Looks up several entries in the cache.\n     *\n     * @param documentKeys - The set of keys entries to look up.\n     * @returns A map of MaybeDocuments indexed by key (if a document cannot be\n     *     found, the key will be mapped to null) and a map of sizes indexed by\n     *     key (zero if the key cannot be found).\n     */    qr(t, e) {\n        let n = hn(), s = new nn(J.H);\n        return this.Br(t, e, ((t, e) => {\n            const i = this.Lr(e);\n            i ? (n = n.zt(t, i), s = s.zt(t, gi(e))) : (n = n.zt(t, null), s = s.zt(t, 0));\n        })).next((() => ({\n            Ur: n,\n            Qr: s\n        })));\n    }\n    Br(t, e, n) {\n        if (e.et()) return ws.resolve();\n        const s = IDBKeyRange.bound(e.first().path.it(), e.last().path.it()), i = e.te();\n        let r = i.oe();\n        return Ki(t).hs({\n            range: s\n        }, ((t, e, s) => {\n            const o = J.Et(t);\n            // Go through keys not found in cache.\n                        for (;r && J.H(r, o) < 0; ) n(r, null), r = i.oe();\n            r && r.isEqual(o) && (\n            // Key found in cache.\n            n(r, e), r = i.ce() ? i.oe() : null), \n            // Skip to the next key (if there is one).\n            r ? s.ss(r.path.it()) : s.done();\n        })).next((() => {\n            // The rest of the keys are not in the cache. One case where `iterate`\n            // above won't go through them is when the cache is empty.\n            for (;r; ) n(r, null), r = i.ce() ? i.oe() : null;\n        }));\n    }\n    Kr(t, e, n) {\n        let s = _n();\n        const i = e.path.length + 1, r = {};\n        if (n.isEqual(W.min())) {\n            // Documents are ordered by key, so we can use a prefix scan to narrow\n            // down the documents we need to match the query against.\n            const t = e.path.it();\n            r.range = IDBKeyRange.lowerBound(t);\n        } else {\n            // Execute an index-free query and filter by read time. This is safe\n            // since all document changes to queries that have a\n            // lastLimboFreeSnapshotVersion (`sinceReadTime`) have a read time set.\n            const t = e.path.it(), s = si(n);\n            r.range = IDBKeyRange.lowerBound([ t, s ], \n            /* open= */ !0), r.index = Bs.collectionReadTimeIndex;\n        }\n        return Ki(t).hs(r, ((t, n, r) => {\n            // The query is actually returning any path that starts with the query\n            // path prefix which may include documents in subcollections. For\n            // example, a query on 'rooms' will return rooms/abc/messages/xyx but we\n            // shouldn't match it. Fix this by discarding rows with document keys\n            // more than one segment longer than the query path.\n            if (t.length !== i) return;\n            const o = ei(this.Qt, n);\n            e.path.nt(o.key.path) ? o instanceof vt && fe(e, o) && (s = s.zt(o.key, o)) : r.done();\n        })).next((() => s));\n    }\n    Nr(t) {\n        return new Ui(this, !!t && t.Wr);\n    }\n    kr(t) {\n        return this.getMetadata(t).next((t => t.byteSize));\n    }\n    getMetadata(t) {\n        return Qi(t).get(qs.key).next((t => (p(!!t), t)));\n    }\n    Mr(t, e) {\n        return Qi(t).put(qs.key, e);\n    }\n    /**\n     * Decodes `remoteDoc` and returns the document (or null, if the document\n     * corresponds to the format used for sentinel deletes).\n     */    Lr(t) {\n        if (t) {\n            const e = ei(this.Qt, t);\n            return e instanceof St && e.version.isEqual(W.min()) ? null : e;\n        }\n        return null;\n    }\n}\n\n/**\n * Creates a new IndexedDbRemoteDocumentCache.\n *\n * @param serializer - The document serializer.\n * @param indexManager - The query indexes that need to be maintained.\n */\n/**\n * Handles the details of adding and updating documents in the IndexedDbRemoteDocumentCache.\n *\n * Unlike the MemoryRemoteDocumentChangeBuffer, the IndexedDb implementation computes the size\n * delta for all submitted changes. This avoids having to re-read all documents from IndexedDb\n * when we apply the changes.\n */\nclass Ui extends Pi {\n    /**\n     * @param documentCache - The IndexedDbRemoteDocumentCache to apply the changes to.\n     * @param trackRemovals - Whether to create sentinel deletes that can be tracked by\n     * `getNewDocumentChanges()`.\n     */\n    constructor(t, e) {\n        super(), this.jr = t, this.Wr = e, \n        // A map of document sizes prior to applying the changes in this buffer.\n        this.Gr = new Ri((t => t.toString()), ((t, e) => t.isEqual(e)));\n    }\n    wi(t) {\n        const e = [];\n        let n = 0, s = new on(((t, e) => D(t.rt(), e.rt())));\n        return this.ri.forEach(((i, r) => {\n            const o = this.Gr.get(i);\n            if (r.hi) {\n                const c = ni(this.jr.Qt, r.hi, this.ci(i));\n                s = s.add(i.path.X());\n                const a = gi(c);\n                n += a - o, e.push(this.jr.ai(t, i, c));\n            } else if (n -= o, this.Wr) {\n                // In order to track removals, we store a \"sentinel delete\" in the\n                // RemoteDocumentCache. This entry is represented by a NoDocument\n                // with a version of 0 and ignored by `maybeDecodeDocument()` but\n                // preserved in `getNewDocumentChanges()`.\n                const n = ni(this.jr.Qt, new St(i, W.min()), this.ci(i));\n                e.push(this.jr.ai(t, i, n));\n            } else e.push(this.jr.li(t, i));\n        })), s.forEach((n => {\n            e.push(this.jr.Ei.qs(t, n));\n        })), e.push(this.jr.updateMetadata(t, n)), ws.Ln(e);\n    }\n    fi(t, e) {\n        // Record the size of everything we load from the cache so we can compute a delta later.\n        return this.jr.$r(t, e).next((t => null === t ? (this.Gr.set(e, 0), null) : (this.Gr.set(e, t.size), \n        t.hi)));\n    }\n    di(t, e) {\n        // Record the size of everything we load from the cache so we can compute\n        // a delta later.\n        return this.jr.qr(t, e).next((({Ur: t, Qr: e}) => (\n        // Note: `getAllFromCache` returns two maps instead of a single map from\n        // keys to `DocumentSizeEntry`s. This is to allow returning the\n        // `NullableMaybeDocumentMap` directly, without a conversion.\n        e.forEach(((t, e) => {\n            this.Gr.set(t, e);\n        })), t)));\n    }\n}\n\nfunction Qi(t) {\n    return Ys(t, qs.store);\n}\n\n/**\n * Helper to get a typed SimpleDbStore for the remoteDocuments object store.\n */ function Ki(t) {\n    return Ys(t, Bs.store);\n}\n\nfunction Wi(t) {\n    return t.path.it();\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/** Performs database creation and schema upgrades. */ class ji {\n    constructor(t) {\n        this.Qt = t;\n    }\n    /**\n     * Performs database creation and schema upgrades.\n     *\n     * Note that in production, this method is only ever used to upgrade the schema\n     * to SCHEMA_VERSION. Different values of toVersion are only used for testing\n     * and local feature development.\n     */    Jn(t, e, n, s) {\n        p(n < s && n >= 0 && s <= 11);\n        const i = new Es(\"createOrUpgrade\", e);\n        n < 1 && s >= 1 && (function(t) {\n            t.createObjectStore(Fs.store);\n        }(t), function(t) {\n            t.createObjectStore(Os.store, {\n                keyPath: Os.keyPath\n            });\n            t.createObjectStore(ks.store, {\n                keyPath: ks.keyPath,\n                autoIncrement: !0\n            }).createIndex(ks.userMutationsIndex, ks.userMutationsKeyPath, {\n                unique: !0\n            }), t.createObjectStore(Ms.store);\n        }\n        /**\n * Upgrade function to migrate the 'mutations' store from V1 to V3. Loads\n * and rewrites all data.\n */ (t), Gi(t), function(t) {\n            t.createObjectStore(Bs.store);\n        }(t));\n        // Migration 2 to populate the targetGlobal object no longer needed since\n        // migration 3 unconditionally clears it.\n                let r = ws.resolve();\n        return n < 3 && s >= 3 && (\n        // Brand new clients don't need to drop and recreate--only clients that\n        // potentially have corrupt data.\n        0 !== n && (!function(t) {\n            t.deleteObjectStore(Qs.store), t.deleteObjectStore(Us.store), t.deleteObjectStore(Ks.store);\n        }(t), Gi(t)), r = r.next((() => \n        /**\n * Creates the target global singleton row.\n *\n * @param txn - The version upgrade transaction for indexeddb\n */\n        function(t) {\n            const e = t.store(Ks.store), n = new Ks(\n            /*highestTargetId=*/ 0, \n            /*lastListenSequenceNumber=*/ 0, W.min().j(), \n            /*targetCount=*/ 0);\n            return e.put(Ks.key, n);\n        }\n        /**\n * Creates indices on the RemoteDocuments store used for both multi-tab\n * and Index-Free queries.\n */ (i)))), n < 4 && s >= 4 && (0 !== n && (\n        // Schema version 3 uses auto-generated keys to generate globally unique\n        // mutation batch IDs (this was previously ensured internally by the\n        // client). To migrate to the new schema, we have to read all mutations\n        // and write them back out. We preserve the existing batch IDs to guarantee\n        // consistency with other object stores. Any further mutation batch IDs will\n        // be auto-generated.\n        r = r.next((() => function(t, e) {\n            return e.store(ks.store).rs().next((n => {\n                t.deleteObjectStore(ks.store);\n                t.createObjectStore(ks.store, {\n                    keyPath: ks.keyPath,\n                    autoIncrement: !0\n                }).createIndex(ks.userMutationsIndex, ks.userMutationsKeyPath, {\n                    unique: !0\n                });\n                const s = e.store(ks.store), i = n.map((t => s.put(t)));\n                return ws.Ln(i);\n            }));\n        }(t, i)))), r = r.next((() => {\n            !function(t) {\n                t.createObjectStore(js.store, {\n                    keyPath: js.keyPath\n                });\n            }(t);\n        }))), n < 5 && s >= 5 && (r = r.next((() => this.zr(i)))), n < 6 && s >= 6 && (r = r.next((() => (function(t) {\n            t.createObjectStore(qs.store);\n        }(t), this.Hr(i))))), n < 7 && s >= 7 && (r = r.next((() => this.Jr(i)))), n < 8 && s >= 8 && (r = r.next((() => this.Yr(t, i)))), \n        n < 9 && s >= 9 && (r = r.next((() => {\n            // Multi-Tab used to manage its own changelog, but this has been moved\n            // to the DbRemoteDocument object store itself. Since the previous change\n            // log only contained transient data, we can drop its object store.\n            !function(t) {\n                t.objectStoreNames.contains(\"remoteDocumentChanges\") && t.deleteObjectStore(\"remoteDocumentChanges\");\n            }(t), function(t) {\n                const e = t.objectStore(Bs.store);\n                e.createIndex(Bs.readTimeIndex, Bs.readTimeIndexPath, {\n                    unique: !1\n                }), e.createIndex(Bs.collectionReadTimeIndex, Bs.collectionReadTimeIndexPath, {\n                    unique: !1\n                });\n            }(e);\n        }))), n < 10 && s >= 10 && (r = r.next((() => this.Xr(i)))), n < 11 && s >= 11 && (r = r.next((() => {\n            !function(t) {\n                t.createObjectStore(Gs.store, {\n                    keyPath: Gs.keyPath\n                });\n            }(t), function(t) {\n                t.createObjectStore(zs.store, {\n                    keyPath: zs.keyPath\n                });\n            }\n            /**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ (t);\n        }))), r;\n    }\n    Hr(t) {\n        let e = 0;\n        return t.store(Bs.store).hs(((t, n) => {\n            e += gi(n);\n        })).next((() => {\n            const n = new qs(e);\n            return t.store(qs.store).put(qs.key, n);\n        }));\n    }\n    zr(t) {\n        const e = t.store(Os.store), n = t.store(ks.store);\n        return e.rs().next((e => ws.forEach(e, (e => {\n            const s = IDBKeyRange.bound([ e.userId, -1 ], [ e.userId, e.lastAcknowledgedBatchId ]);\n            return n.rs(ks.userMutationsIndex, s).next((n => ws.forEach(n, (n => {\n                p(n.userId === e.userId);\n                const s = ci(this.Qt, n);\n                return yi(t, e.userId, s).next((() => {}));\n            }))));\n        }))));\n    }\n    /**\n     * Ensures that every document in the remote document cache has a corresponding sentinel row\n     * with a sequence number. Missing rows are given the most recently used sequence number.\n     */    Jr(t) {\n        const e = t.store(Qs.store), n = t.store(Bs.store);\n        return t.store(Ks.store).get(Ks.key).next((t => {\n            const s = [];\n            return n.hs(((n, i) => {\n                const r = new G(n), o = function(t) {\n                    return [ 0, Ss(t) ];\n                }(r);\n                s.push(e.get(o).next((n => n ? ws.resolve() : (n => e.put(new Qs(0, Ss(n), t.highestListenSequenceNumber)))(r))));\n            })).next((() => ws.Ln(s)));\n        }));\n    }\n    Yr(t, e) {\n        // Create the index.\n        t.createObjectStore(Ws.store, {\n            keyPath: Ws.keyPath\n        });\n        const n = e.store(Ws.store), s = new wi, i = t => {\n            if (s.add(t)) {\n                const e = t.tt(), s = t.X();\n                return n.put({\n                    collectionId: e,\n                    parent: Ss(s)\n                });\n            }\n        };\n        // Helper to add an index entry iff we haven't already written it.\n                // Index existing remote documents.\n        return e.store(Bs.store).hs({\n            us: !0\n        }, ((t, e) => {\n            const n = new G(t);\n            return i(n.X());\n        })).next((() => e.store(Ms.store).hs({\n            us: !0\n        }, (([t, e, n], s) => {\n            const r = xs(e);\n            return i(r.X());\n        }))));\n    }\n    Xr(t) {\n        const e = t.store(Us.store);\n        return e.hs(((t, n) => {\n            const s = ai(n), i = ui(this.Qt, s);\n            return e.put(i);\n        }));\n    }\n}\n\nfunction Gi(t) {\n    t.createObjectStore(Qs.store, {\n        keyPath: Qs.keyPath\n    }).createIndex(Qs.documentTargetsIndex, Qs.documentTargetsKeyPath, {\n        unique: !0\n    });\n    // NOTE: This is unique only because the TargetId is the suffix.\n    t.createObjectStore(Us.store, {\n        keyPath: Us.keyPath\n    }).createIndex(Us.queryTargetsIndexName, Us.queryTargetsKeyPath, {\n        unique: !0\n    }), t.createObjectStore(Ks.store);\n}\n\nconst zi = \"Failed to obtain exclusive access to the persistence layer. To allow shared access, multi-tab synchronization has to be enabled in all tabs. If you are using `experimentalForceOwningTab:true`, make sure that only one tab has persistence enabled at any given time.\";\n\n/**\n * Oldest acceptable age in milliseconds for client metadata before the client\n * is considered inactive and its associated data is garbage collected.\n */\n/**\n * An IndexedDB-backed instance of Persistence. Data is stored persistently\n * across sessions.\n *\n * On Web only, the Firestore SDKs support shared access to its persistence\n * layer. This allows multiple browser tabs to read and write to IndexedDb and\n * to synchronize state even without network connectivity. Shared access is\n * currently optional and not enabled unless all clients invoke\n * `enablePersistence()` with `{synchronizeTabs:true}`.\n *\n * In multi-tab mode, if multiple clients are active at the same time, the SDK\n * will designate one client as the “primary client”. An effort is made to pick\n * a visible, network-connected and active client, and this client is\n * responsible for letting other clients know about its presence. The primary\n * client writes a unique client-generated identifier (the client ID) to\n * IndexedDb’s “owner” store every 4 seconds. If the primary client fails to\n * update this entry, another client can acquire the lease and take over as\n * primary.\n *\n * Some persistence operations in the SDK are designated as primary-client only\n * operations. This includes the acknowledgment of mutations and all updates of\n * remote documents. The effects of these operations are written to persistence\n * and then broadcast to other tabs via LocalStorage (see\n * `WebStorageSharedClientState`), which then refresh their state from\n * persistence.\n *\n * Similarly, the primary client listens to notifications sent by secondary\n * clients to discover persistence changes written by secondary clients, such as\n * the addition of new mutations and query targets.\n *\n * If multi-tab is not enabled and another tab already obtained the primary\n * lease, IndexedDbPersistence enters a failed state and all subsequent\n * operations will automatically fail.\n *\n * Additionally, there is an optimization so that when a tab is closed, the\n * primary lease is released immediately (this is especially important to make\n * sure that a refreshed tab is able to immediately re-acquire the primary\n * lease). Unfortunately, IndexedDB cannot be reliably used in window.unload\n * since it is an asynchronous API. So in addition to attempting to give up the\n * lease, the leaseholder writes its client ID to a \"zombiedClient\" entry in\n * LocalStorage which acts as an indicator that another tab should go ahead and\n * take the primary lease immediately regardless of the current lease timestamp.\n *\n * TODO(b/114226234): Remove `synchronizeTabs` section when multi-tab is no\n * longer optional.\n */\nclass Hi {\n    constructor(\n    /**\n     * Whether to synchronize the in-memory state of multiple tabs and share\n     * access to local persistence.\n     */\n    t, e, n, s, i, r, o, c, a, \n    /**\n     * If set to true, forcefully obtains database access. Existing tabs will\n     * no longer be able to access IndexedDB.\n     */\n    u) {\n        if (this.allowTabSynchronization = t, this.persistenceKey = e, this.clientId = n, \n        this.Zr = i, this.window = r, this.document = o, this.eo = a, this.no = u, this.so = null, \n        this.io = !1, this.isPrimary = !1, this.networkEnabled = !0, \n        /** Our window.unload handler, if registered. */\n        this.ro = null, this.inForeground = !1, \n        /** Our 'visibilitychange' listener if registered. */\n        this.oo = null, \n        /** The client metadata refresh task. */\n        this.co = null, \n        /** The last time we garbage collected the client metadata object store. */\n        this.ao = Number.NEGATIVE_INFINITY, \n        /** A listener to notify on primary state changes. */\n        this.uo = t => Promise.resolve(), !Hi.Kn()) throw new O(F.UNIMPLEMENTED, \"This platform is either missing IndexedDB or is known to have an incomplete implementation. Offline persistence has been disabled.\");\n        this.Ti = new $i(this, s), this.ho = e + \"main\", this.Qt = new ti(c), this.lo = new Ts(this.ho, 11, new ji(this.Qt)), \n        this._o = new Ci(this.Ti, this.Qt), this.Ei = new Ei, this.fo = function(t, e) {\n            return new qi(t, e);\n        }\n        /**\n * Returns the set of documents that have changed since the specified read\n * time.\n */\n        // PORTING NOTE: This is only used for multi-tab synchronization.\n        (this.Qt, this.Ei), this.wo = new li, this.window && this.window.localStorage ? this.Eo = this.window.localStorage : (this.Eo = null, \n        !1 === u && P(\"IndexedDbPersistence\", \"LocalStorage is unavailable. As a result, persistence may not work reliably. In particular enablePersistence() could fail immediately after refreshing the page.\"));\n    }\n    /**\n     * Attempt to start IndexedDb persistence.\n     *\n     * @returns Whether persistence was enabled.\n     */    start() {\n        // NOTE: This is expected to fail sometimes (in the case of another tab\n        // already having the persistence lock), so it's the first thing we should\n        // do.\n        return this.To().then((() => {\n            if (!this.isPrimary && !this.allowTabSynchronization) \n            // Fail `start()` if `synchronizeTabs` is disabled and we cannot\n            // obtain the primary lease.\n            throw new O(F.FAILED_PRECONDITION, zi);\n            return this.Io(), this.mo(), this.Ao(), this.runTransaction(\"getHighestListenSequenceNumber\", \"readonly\", (t => this._o.Ki(t)));\n        })).then((t => {\n            this.so = new Q(t, this.eo);\n        })).then((() => {\n            this.io = !0;\n        })).catch((t => (this.lo && this.lo.close(), Promise.reject(t))));\n    }\n    /**\n     * Registers a listener that gets called when the primary state of the\n     * instance changes. Upon registering, this listener is invoked immediately\n     * with the current primary state.\n     *\n     * PORTING NOTE: This is only used for Web multi-tab.\n     */    Ro(t) {\n        return this.uo = async e => {\n            if (this.Er) return t(e);\n        }, t(this.isPrimary);\n    }\n    /**\n     * Registers a listener that gets called when the database receives a\n     * version change event indicating that it has deleted.\n     *\n     * PORTING NOTE: This is only used for Web multi-tab.\n     */    Po(t) {\n        this.lo.Xn((async e => {\n            // Check if an attempt is made to delete IndexedDB.\n            null === e.newVersion && await t();\n        }));\n    }\n    /**\n     * Adjusts the current network state in the client's metadata, potentially\n     * affecting the primary lease.\n     *\n     * PORTING NOTE: This is only used for Web multi-tab.\n     */    yo(t) {\n        this.networkEnabled !== t && (this.networkEnabled = t, \n        // Schedule a primary lease refresh for immediate execution. The eventual\n        // lease update will be propagated via `primaryStateListener`.\n        this.Zr.Ps((async () => {\n            this.Er && await this.To();\n        })));\n    }\n    /**\n     * Updates the client metadata in IndexedDb and attempts to either obtain or\n     * extend the primary lease for the local client. Asynchronously notifies the\n     * primary state listener if the client either newly obtained or released its\n     * primary lease.\n     */    To() {\n        return this.runTransaction(\"updateClientMetadataAndTryBecomePrimary\", \"readwrite\", (t => Yi(t).put(new js(this.clientId, Date.now(), this.networkEnabled, this.inForeground)).next((() => {\n            if (this.isPrimary) return this.Vo(t).next((t => {\n                t || (this.isPrimary = !1, this.Zr.po((() => this.uo(!1))));\n            }));\n        })).next((() => this.bo(t))).next((e => this.isPrimary && !e ? this.vo(t).next((() => !1)) : !!e && this.So(t).next((() => !0)))))).catch((t => {\n            if (As(t)) \n            // Proceed with the existing state. Any subsequent access to\n            // IndexedDB will verify the lease.\n            return R(\"IndexedDbPersistence\", \"Failed to extend owner lease: \", t), this.isPrimary;\n            if (!this.allowTabSynchronization) throw t;\n            return R(\"IndexedDbPersistence\", \"Releasing owner lease after error during lease refresh\", t), \n            /* isPrimary= */ !1;\n        })).then((t => {\n            this.isPrimary !== t && this.Zr.po((() => this.uo(t))), this.isPrimary = t;\n        }));\n    }\n    Vo(t) {\n        return Ji(t).get(Fs.key).next((t => ws.resolve(this.Do(t))));\n    }\n    Co(t) {\n        return Yi(t).delete(this.clientId);\n    }\n    /**\n     * If the garbage collection threshold has passed, prunes the\n     * RemoteDocumentChanges and the ClientMetadata store based on the last update\n     * time of all clients.\n     */    async xo() {\n        if (this.isPrimary && !this.No(this.ao, 18e5)) {\n            this.ao = Date.now();\n            const t = await this.runTransaction(\"maybeGarbageCollectMultiClientState\", \"readwrite-primary\", (t => {\n                const e = Ys(t, js.store);\n                return e.rs().next((t => {\n                    const n = this.Fo(t, 18e5), s = t.filter((t => -1 === n.indexOf(t)));\n                    // Delete metadata for clients that are no longer considered active.\n                    return ws.forEach(s, (t => e.delete(t.clientId))).next((() => s));\n                }));\n            })).catch((() => []));\n            // Delete potential leftover entries that may continue to mark the\n            // inactive clients as zombied in LocalStorage.\n            // Ideally we'd delete the IndexedDb and LocalStorage zombie entries for\n            // the client atomically, but we can't. So we opt to delete the IndexedDb\n            // entries first to avoid potentially reviving a zombied client.\n                        if (this.Eo) for (const e of t) this.Eo.removeItem(this.Oo(e.clientId));\n        }\n    }\n    /**\n     * Schedules a recurring timer to update the client metadata and to either\n     * extend or acquire the primary lease if the client is eligible.\n     */    Ao() {\n        this.co = this.Zr.Tr(\"client_metadata_refresh\" /* ClientMetadataRefresh */ , 4e3, (() => this.To().then((() => this.xo())).then((() => this.Ao()))));\n    }\n    /** Checks whether `client` is the local client. */    Do(t) {\n        return !!t && t.ownerId === this.clientId;\n    }\n    /**\n     * Evaluate the state of all active clients and determine whether the local\n     * client is or can act as the holder of the primary lease. Returns whether\n     * the client is eligible for the lease, but does not actually acquire it.\n     * May return 'false' even if there is no active leaseholder and another\n     * (foreground) client should become leaseholder instead.\n     */    bo(t) {\n        if (this.no) return ws.resolve(!0);\n        return Ji(t).get(Fs.key).next((e => {\n            // A client is eligible for the primary lease if:\n            // - its network is enabled and the client's tab is in the foreground.\n            // - its network is enabled and no other client's tab is in the\n            //   foreground.\n            // - every clients network is disabled and the client's tab is in the\n            //   foreground.\n            // - every clients network is disabled and no other client's tab is in\n            //   the foreground.\n            // - the `forceOwningTab` setting was passed in.\n            if (null !== e && this.No(e.leaseTimestampMs, 5e3) && !this.ko(e.ownerId)) {\n                if (this.Do(e) && this.networkEnabled) return !0;\n                if (!this.Do(e)) {\n                    if (!e.allowTabSynchronization) \n                    // Fail the `canActAsPrimary` check if the current leaseholder has\n                    // not opted into multi-tab synchronization. If this happens at\n                    // client startup, we reject the Promise returned by\n                    // `enablePersistence()` and the user can continue to use Firestore\n                    // with in-memory persistence.\n                    // If this fails during a lease refresh, we will instead block the\n                    // AsyncQueue from executing further operations. Note that this is\n                    // acceptable since mixing & matching different `synchronizeTabs`\n                    // settings is not supported.\n                    // TODO(b/114226234): Remove this check when `synchronizeTabs` can\n                    // no longer be turned off.\n                    throw new O(F.FAILED_PRECONDITION, zi);\n                    return !1;\n                }\n            }\n            return !(!this.networkEnabled || !this.inForeground) || Yi(t).rs().next((t => void 0 === this.Fo(t, 5e3).find((t => {\n                if (this.clientId !== t.clientId) {\n                    const e = !this.networkEnabled && t.networkEnabled, n = !this.inForeground && t.inForeground, s = this.networkEnabled === t.networkEnabled;\n                    if (e || n && s) return !0;\n                }\n                return !1;\n            }))));\n        })).next((t => (this.isPrimary !== t && R(\"IndexedDbPersistence\", `Client ${t ? \"is\" : \"is not\"} eligible for a primary lease.`), \n        t)));\n    }\n    async Mo() {\n        // The shutdown() operations are idempotent and can be called even when\n        // start() aborted (e.g. because it couldn't acquire the persistence lease).\n        this.io = !1, this.Lo(), this.co && (this.co.cancel(), this.co = null), this.$o(), \n        this.Bo(), \n        // Use `SimpleDb.runTransaction` directly to avoid failing if another tab\n        // has obtained the primary lease.\n        await this.lo.runTransaction(\"shutdown\", \"readwrite\", [ Fs.store, js.store ], (t => {\n            const e = new Js(t, Q.q);\n            return this.vo(e).next((() => this.Co(e)));\n        })), this.lo.close(), \n        // Remove the entry marking the client as zombied from LocalStorage since\n        // we successfully deleted its metadata from IndexedDb.\n        this.qo();\n    }\n    /**\n     * Returns clients that are not zombied and have an updateTime within the\n     * provided threshold.\n     */    Fo(t, e) {\n        return t.filter((t => this.No(t.updateTimeMs, e) && !this.ko(t.clientId)));\n    }\n    /**\n     * Returns the IDs of the clients that are currently active. If multi-tab\n     * is not supported, returns an array that only contains the local client's\n     * ID.\n     *\n     * PORTING NOTE: This is only used for Web multi-tab.\n     */    Uo() {\n        return this.runTransaction(\"getActiveClients\", \"readonly\", (t => Yi(t).rs().next((t => this.Fo(t, 18e5).map((t => t.clientId))))));\n    }\n    get Er() {\n        return this.io;\n    }\n    Qo(t) {\n        return Vi.mi(t, this.Qt, this.Ei, this.Ti);\n    }\n    Sr() {\n        return this._o;\n    }\n    Fr() {\n        return this.fo;\n    }\n    Ko() {\n        return this.Ei;\n    }\n    Wo() {\n        return this.wo;\n    }\n    runTransaction(t, e, n) {\n        R(\"IndexedDbPersistence\", \"Starting transaction:\", t);\n        const s = \"readonly\" === e ? \"readonly\" : \"readwrite\";\n        let i;\n        // Do all transactions as readwrite against all object stores, since we\n        // are the only reader/writer.\n                return this.lo.runTransaction(t, s, Hs, (s => (i = new Js(s, this.so ? this.so.next() : Q.q), \n        \"readwrite-primary\" === e ? this.Vo(i).next((t => !!t || this.bo(i))).next((e => {\n            if (!e) throw P(`Failed to obtain primary lease for action '${t}'.`), this.isPrimary = !1, \n            this.Zr.po((() => this.uo(!1))), new O(F.FAILED_PRECONDITION, bs);\n            return n(i);\n        })).next((t => this.So(i).next((() => t)))) : this.jo(i).next((() => n(i)))))).then((t => (i.Vs(), \n        t)));\n    }\n    /**\n     * Verifies that the current tab is the primary leaseholder or alternatively\n     * that the leaseholder has opted into multi-tab synchronization.\n     */\n    // TODO(b/114226234): Remove this check when `synchronizeTabs` can no longer\n    // be turned off.\n    jo(t) {\n        return Ji(t).get(Fs.key).next((t => {\n            if (null !== t && this.No(t.leaseTimestampMs, 5e3) && !this.ko(t.ownerId) && !this.Do(t) && !(this.no || this.allowTabSynchronization && t.allowTabSynchronization)) throw new O(F.FAILED_PRECONDITION, zi);\n        }));\n    }\n    /**\n     * Obtains or extends the new primary lease for the local client. This\n     * method does not verify that the client is eligible for this lease.\n     */    So(t) {\n        const e = new Fs(this.clientId, this.allowTabSynchronization, Date.now());\n        return Ji(t).put(Fs.key, e);\n    }\n    static Kn() {\n        return Ts.Kn();\n    }\n    /** Checks the primary lease and removes it if we are the current primary. */    vo(t) {\n        const e = Ji(t);\n        return e.get(Fs.key).next((t => this.Do(t) ? (R(\"IndexedDbPersistence\", \"Releasing primary lease.\"), \n        e.delete(Fs.key)) : ws.resolve()));\n    }\n    /** Verifies that `updateTimeMs` is within `maxAgeMs`. */    No(t, e) {\n        const n = Date.now();\n        return !(t < n - e) && (!(t > n) || (P(`Detected an update time that is in the future: ${t} > ${n}`), \n        !1));\n    }\n    Io() {\n        null !== this.document && \"function\" == typeof this.document.addEventListener && (this.oo = () => {\n            this.Zr.Ps((() => (this.inForeground = \"visible\" === this.document.visibilityState, \n            this.To())));\n        }, this.document.addEventListener(\"visibilitychange\", this.oo), this.inForeground = \"visible\" === this.document.visibilityState);\n    }\n    $o() {\n        this.oo && (this.document.removeEventListener(\"visibilitychange\", this.oo), this.oo = null);\n    }\n    /**\n     * Attaches a window.unload handler that will synchronously write our\n     * clientId to a \"zombie client id\" location in LocalStorage. This can be used\n     * by tabs trying to acquire the primary lease to determine that the lease\n     * is no longer valid even if the timestamp is recent. This is particularly\n     * important for the refresh case (so the tab correctly re-acquires the\n     * primary lease). LocalStorage is used for this rather than IndexedDb because\n     * it is a synchronous API and so can be used reliably from  an unload\n     * handler.\n     */    mo() {\n        var t;\n        \"function\" == typeof (null === (t = this.window) || void 0 === t ? void 0 : t.addEventListener) && (this.ro = () => {\n            // Note: In theory, this should be scheduled on the AsyncQueue since it\n            // accesses internal state. We execute this code directly during shutdown\n            // to make sure it gets a chance to run.\n            this.Lo(), this.Zr.Ps((() => this.Mo()));\n        }, this.window.addEventListener(\"unload\", this.ro));\n    }\n    Bo() {\n        this.ro && (this.window.removeEventListener(\"unload\", this.ro), this.ro = null);\n    }\n    /**\n     * Returns whether a client is \"zombied\" based on its LocalStorage entry.\n     * Clients become zombied when their tab closes without running all of the\n     * cleanup logic in `shutdown()`.\n     */    ko(t) {\n        var e;\n        try {\n            const n = null !== (null === (e = this.Eo) || void 0 === e ? void 0 : e.getItem(this.Oo(t)));\n            return R(\"IndexedDbPersistence\", `Client '${t}' ${n ? \"is\" : \"is not\"} zombied in LocalStorage`), \n            n;\n        } catch (t) {\n            // Gracefully handle if LocalStorage isn't working.\n            return P(\"IndexedDbPersistence\", \"Failed to get zombied client id.\", t), !1;\n        }\n    }\n    /**\n     * Record client as zombied (a client that had its tab closed). Zombied\n     * clients are ignored during primary tab selection.\n     */    Lo() {\n        if (this.Eo) try {\n            this.Eo.setItem(this.Oo(this.clientId), String(Date.now()));\n        } catch (t) {\n            // Gracefully handle if LocalStorage isn't available / working.\n            P(\"Failed to set zombie client id.\", t);\n        }\n    }\n    /** Removes the zombied client entry if it exists. */    qo() {\n        if (this.Eo) try {\n            this.Eo.removeItem(this.Oo(this.clientId));\n        } catch (t) {\n            // Ignore\n        }\n    }\n    Oo(t) {\n        return `firestore_zombie_${this.persistenceKey}_${t}`;\n    }\n}\n\n/**\n * Helper to get a typed SimpleDbStore for the primary client object store.\n */ function Ji(t) {\n    return Ys(t, Fs.store);\n}\n\n/**\n * Helper to get a typed SimpleDbStore for the client metadata object store.\n */ function Yi(t) {\n    return Ys(t, js.store);\n}\n\n/**\n * Generates a string used as a prefix when storing data in IndexedDB and\n * LocalStorage.\n */ function Xi(t, e) {\n    // Use two different prefix formats:\n    //   * firestore / persistenceKey / projectID . databaseID / ...\n    //   * firestore / persistenceKey / projectID / ...\n    // projectIDs are DNS-compatible names and cannot contain dots\n    // so there's no danger of collisions.\n    let n = t.projectId;\n    return t.o || (n += \".\" + t.database), \"firestore/\" + e + \"/\" + n + \"/\";\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nclass Zi {\n    constructor(t, e) {\n        this.progress = t, this.Go = e;\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * A readonly view of the local state of all documents we're tracking (i.e. we\n * have a cached version in remoteDocumentCache or local mutations for the\n * document). The view is computed by applying the mutations in the\n * MutationQueue to the RemoteDocumentCache.\n */ class tr {\n    constructor(t, e, n) {\n        this.fo = t, this.zo = e, this.Ei = n;\n    }\n    /**\n     * Get the local view of the document identified by `key`.\n     *\n     * @returns Local view of the document or null if we don't have any cached\n     * state for it.\n     */    Ho(t, e) {\n        return this.zo.bi(t, e).next((n => this.Jo(t, e, n)));\n    }\n    /** Internal version of `getDocument` that allows reusing batches. */    Jo(t, e, n) {\n        return this.fo._i(t, e).next((t => {\n            for (const s of n) t = s.Cs(e, t);\n            return t;\n        }));\n    }\n    // Returns the view of the given `docs` as they would appear after applying\n    // all mutations in the given `batches`.\n    Yo(t, e, n) {\n        let s = hn();\n        return e.forEach(((t, e) => {\n            for (const s of n) e = s.Cs(t, e);\n            s = s.zt(t, e);\n        })), s;\n    }\n    /**\n     * Gets the local view of the documents identified by `keys`.\n     *\n     * If we don't have cached state for a document in `keys`, a NoDocument will\n     * be stored for that key in the resulting set.\n     */    Xo(t, e) {\n        return this.fo.getEntries(t, e).next((e => this.Zo(t, e)));\n    }\n    /**\n     * Similar to `getDocuments`, but creates the local view from the given\n     * `baseDocs` without retrieving documents from the local store.\n     */    Zo(t, e) {\n        return this.zo.vi(t, e).next((n => {\n            const s = this.Yo(t, e, n);\n            let i = un();\n            return s.forEach(((t, e) => {\n                // TODO(http://b/32275378): Don't conflate missing / deleted.\n                e || (e = new St(t, W.min())), i = i.zt(t, e);\n            })), i;\n        }));\n    }\n    /**\n     * Performs a query against the local view of all documents.\n     *\n     * @param transaction - The persistence transaction.\n     * @param query - The query to match documents against.\n     * @param sinceReadTime - If not set to SnapshotVersion.min(), return only\n     *     documents that have been read since this snapshot version (exclusive).\n     */    Kr(t, e, n) {\n        /**\n * Returns whether the query matches a single document by path (rather than a\n * collection).\n */\n        return function(t) {\n            return J.wt(t.path) && null === t.collectionGroup && 0 === t.filters.length;\n        }(e) ? this.tc(t, e.path) : oe(e) ? this.ec(t, e, n) : this.nc(t, e, n);\n    }\n    tc(t, e) {\n        // Just do a simple document lookup.\n        return this.Ho(t, new J(e)).next((t => {\n            let e = _n();\n            return t instanceof vt && (e = e.zt(t.key, t)), e;\n        }));\n    }\n    ec(t, e, n) {\n        const s = e.collectionGroup;\n        let i = _n();\n        return this.Ei.Us(t, s).next((r => ws.forEach(r, (r => {\n            const o = function(t, e) {\n                return new Zt(e, \n                /*collectionGroup=*/ null, t.xt.slice(), t.filters.slice(), t.limit, t.limitType, t.startAt, t.endAt);\n            }\n            /**\n * Returns true if this query does not specify any query constraints that\n * could remove results.\n */ (e, r.child(s));\n            return this.nc(t, o, n).next((t => {\n                t.forEach(((t, e) => {\n                    i = i.zt(t, e);\n                }));\n            }));\n        })).next((() => i))));\n    }\n    nc(t, e, n) {\n        // Query the remote documents and overlay mutations.\n        let s, i;\n        return this.fo.Kr(t, e, n).next((n => (s = n, this.zo.Di(t, e)))).next((e => (i = e, \n        this.sc(t, i, s).next((t => {\n            s = t;\n            for (const t of i) for (const e of t.mutations) {\n                const n = e.key, i = $e(e, s.get(n), t.vs);\n                s = i instanceof vt ? s.zt(n, i) : s.remove(n);\n            }\n        }))))).next((() => (\n        // Finally, filter out any documents that don't actually match\n        // the query.\n        s.forEach(((t, n) => {\n            fe(e, n) || (s = s.remove(t));\n        })), s)));\n    }\n    sc(t, e, n) {\n        let s = En();\n        for (const t of e) for (const e of t.mutations) e instanceof Ke && null === n.get(e.key) && (s = s.add(e.key));\n        let i = n;\n        return this.fo.getEntries(t, s).next((t => (t.forEach(((t, e) => {\n            null !== e && e instanceof vt && (i = i.zt(t, e));\n        })), i)));\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * A set of changes to what documents are currently in view and out of view for\n * a given query. These changes are sent to the LocalStore by the View (via\n * the SyncEngine) and are used to pin / unpin documents as appropriate.\n */ class er {\n    constructor(t, e, n, s) {\n        this.targetId = t, this.fromCache = e, this.ic = n, this.rc = s;\n    }\n    static oc(t, e) {\n        let n = En(), s = En();\n        for (const t of e.docChanges) switch (t.type) {\n          case 0 /* Added */ :\n            n = n.add(t.doc.key);\n            break;\n\n          case 1 /* Removed */ :\n            s = s.add(t.doc.key);\n // do nothing\n                }\n        return new er(t, e.fromCache, n, s);\n    }\n}\n\n/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * A query engine that takes advantage of the target document mapping in the\n * QueryCache. Query execution is optimized by only reading the documents that\n * previously matched a query plus any documents that were edited after the\n * query was last listened to.\n *\n * There are some cases when this optimization is not guaranteed to produce\n * the same results as full collection scans. In these cases, query\n * processing falls back to full scans. These cases are:\n *\n * - Limit queries where a document that matched the query previously no longer\n *   matches the query.\n *\n * - Limit queries where a document edit may cause the document to sort below\n *   another document that is in the local cache.\n *\n * - Queries that have never been CURRENT or free of limbo documents.\n */ class nr {\n    /** Sets the document view to query against. */\n    cc(t) {\n        this.ac = t;\n    }\n    /** Returns all local documents matching the specified query. */    Kr(t, n, s, i) {\n        // Queries that match all documents don't benefit from using\n        // key-based lookups. It is more efficient to scan all documents in a\n        // collection, rather than to perform individual lookups.\n        return function(t) {\n            return 0 === t.filters.length && null === t.limit && null == t.startAt && null == t.endAt && (0 === t.xt.length || 1 === t.xt.length && t.xt[0].field.ut());\n        }(n) || s.isEqual(W.min()) ? this.uc(t, n) : this.ac.Xo(t, i).next((r => {\n            const o = this.hc(n, r);\n            return (ne(n) || se(n)) && this.lc(n.limitType, o, i, s) ? this.uc(t, n) : (A() <= e.DEBUG && R(\"QueryEngine\", \"Re-using previous result from %s to execute query: %s\", s.toString(), _e(n)), \n            this.ac.Kr(t, n, s).next((t => (\n            // We merge `previousResults` into `updateResults`, since\n            // `updateResults` is already a DocumentMap. If a document is\n            // contained in both lists, then its contents are the same.\n            o.forEach((e => {\n                t = t.zt(e.key, e);\n            })), t))));\n        }));\n        // Queries that have never seen a snapshot without limbo free documents\n        // should also be run as a full collection scan.\n        }\n    /** Applies the query filter and sorting to the provided documents.  */    hc(t, e) {\n        // Sort the documents and re-apply the query filter since previously\n        // matching documents do not necessarily still match the query.\n        let n = new on(de(t));\n        return e.forEach(((e, s) => {\n            s instanceof vt && fe(t, s) && (n = n.add(s));\n        })), n;\n    }\n    /**\n     * Determines if a limit query needs to be refilled from cache, making it\n     * ineligible for index-free execution.\n     *\n     * @param sortedPreviousResults - The documents that matched the query when it\n     * was last synchronized, sorted by the query's comparator.\n     * @param remoteKeys - The document keys that matched the query at the last\n     * snapshot.\n     * @param limboFreeSnapshotVersion - The version of the snapshot when the\n     * query was last synchronized.\n     */    lc(t, e, n, s) {\n        // The query needs to be refilled if a previously matching document no\n        // longer matches.\n        if (n.size !== e.size) return !0;\n        // Limit queries are not eligible for index-free query execution if there is\n        // a potential that an older document from cache now sorts before a document\n        // that was previously part of the limit. This, however, can only happen if\n        // the document at the edge of the limit goes out of limit.\n        // If a document that is not the limit boundary sorts differently,\n        // the boundary of the limit itself did not change and documents from cache\n        // will continue to be \"rejected\" by this boundary. Therefore, we can ignore\n        // any modifications that don't affect the last document.\n                const i = \"F\" /* First */ === t ? e.last() : e.first();\n        return !!i && (i.hasPendingWrites || i.version._(s) > 0);\n    }\n    uc(t, n) {\n        return A() <= e.DEBUG && R(\"QueryEngine\", \"Using full collection scan to execute query:\", _e(n)), \n        this.ac.Kr(t, n, W.min());\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Implements `LocalStore` interface.\n *\n * Note: some field defined in this class might have public access level, but\n * the class is not exported so they are only accessible from this module.\n * This is useful to implement optional features (like bundles) in free\n * functions, such that they are tree-shakeable.\n */\nclass sr {\n    constructor(\n    /** Manages our in-memory or durable persistence. */\n    t, e, n, s) {\n        this.persistence = t, this._c = e, this.Qt = s, \n        /**\n         * Maps a targetID to data about its target.\n         *\n         * PORTING NOTE: We are using an immutable data structure on Web to make re-runs\n         * of `applyRemoteEvent()` idempotent.\n         */\n        this.fc = new nn(D), \n        /** Maps a target to its targetID. */\n        // TODO(wuandy): Evaluate if TargetId can be part of Target.\n        this.dc = new Ri((t => Nt(t)), Ot), \n        /**\n         * The read time of the last entry processed by `getNewDocumentChanges()`.\n         *\n         * PORTING NOTE: This is only used for multi-tab synchronization.\n         */\n        this.wc = W.min(), this.zo = t.Qo(n), this.Ec = t.Fr(), this._o = t.Sr(), this.Tc = new tr(this.Ec, this.zo, this.persistence.Ko()), \n        this.wo = t.Wo(), this._c.cc(this.Tc);\n    }\n    Ir(t) {\n        return this.persistence.runTransaction(\"Collect garbage\", \"readwrite-primary\", (e => t.Vr(e, this.fc)));\n    }\n}\n\nfunction ir(\n/** Manages our in-memory or durable persistence. */\nt, e, n, s) {\n    return new sr(t, e, n, s);\n}\n\n/**\n * Tells the LocalStore that the currently authenticated user has changed.\n *\n * In response the local store switches the mutation queue to the new user and\n * returns any resulting document changes.\n */\n// PORTING NOTE: Android and iOS only return the documents affected by the\n// change.\nasync function rr(t, e) {\n    const n = b(t);\n    let s = n.zo, i = n.Tc;\n    const r = await n.persistence.runTransaction(\"Handle user change\", \"readonly\", (t => {\n        // Swap out the mutation queue, grabbing the pending mutation batches\n        // before and after.\n        let r;\n        return n.zo.pi(t).next((o => (r = o, s = n.persistence.Qo(e), \n        // Recreate our LocalDocumentsView using the new\n        // MutationQueue.\n        i = new tr(n.Ec, s, n.persistence.Ko()), s.pi(t)))).next((e => {\n            const n = [], s = [];\n            // Union the old/new changed keys.\n            let o = En();\n            for (const t of r) {\n                n.push(t.batchId);\n                for (const e of t.mutations) o = o.add(e.key);\n            }\n            for (const t of e) {\n                s.push(t.batchId);\n                for (const e of t.mutations) o = o.add(e.key);\n            }\n            // Return the set of all (potentially) changed documents and the list\n            // of mutation batch IDs that were affected by change.\n                        return i.Xo(t, o).next((t => ({\n                Ic: t,\n                mc: n,\n                Ac: s\n            })));\n        }));\n    }));\n    return n.zo = s, n.Tc = i, n._c.cc(n.Tc), r;\n}\n\n/* Accepts locally generated Mutations and commit them to storage. */\n/**\n * Acknowledges the given batch.\n *\n * On the happy path when a batch is acknowledged, the local store will\n *\n *  + remove the batch from the mutation queue;\n *  + apply the changes to the remote document cache;\n *  + recalculate the latency compensated view implied by those changes (there\n *    may be mutations in the queue that affect the documents but haven't been\n *    acknowledged yet); and\n *  + give the changed documents back the sync engine\n *\n * @returns The resulting (modified) documents.\n */\nfunction or(t, e) {\n    const n = b(t);\n    return n.persistence.runTransaction(\"Acknowledge batch\", \"readwrite-primary\", (t => {\n        const s = e.batch.keys(), i = n.Ec.Nr({\n            Wr: !0\n        });\n        return function(t, e, n, s) {\n            const i = n.batch, r = i.keys();\n            let o = ws.resolve();\n            return r.forEach((t => {\n                o = o.next((() => s._i(e, t))).next((e => {\n                    let r = e;\n                    const o = n.Fs.get(t);\n                    p(null !== o), (!r || r.version._(o) < 0) && (r = i.Ss(t, r, n), r && \n                    // We use the commitVersion as the readTime rather than the\n                    // document's updateTime since the updateTime is not advanced\n                    // for updates that do not modify the underlying document.\n                    s.ai(r, n.Ns));\n                }));\n            })), o.next((() => t.zo.Ci(e, i)));\n        }\n        /** Returns the local view of the documents affected by a mutation batch. */\n        // PORTING NOTE: Multi-Tab only.\n        (n, t, e, i).next((() => i.apply(t))).next((() => n.zo.Fi(t))).next((() => n.Tc.Xo(t, s)));\n    }));\n}\n\n/**\n * Removes mutations from the MutationQueue for the specified batch;\n * LocalDocuments will be recalculated.\n *\n * @returns The resulting modified documents.\n */\n/**\n * Returns the last consistent snapshot processed (used by the RemoteStore to\n * determine whether to buffer incoming snapshots from the backend).\n */\nfunction cr(t) {\n    const e = b(t);\n    return e.persistence.runTransaction(\"Get last remote snapshot version\", \"readonly\", (t => e._o.Qi(t)));\n}\n\n/**\n * Updates the \"ground-state\" (remote) documents. We assume that the remote\n * event reflects any write batches that have been acknowledged or rejected\n * (i.e. we do not re-apply local mutations to updates from this event).\n *\n * LocalDocuments are re-calculated if there are remaining mutations in the\n * queue.\n */ function ar(t, e) {\n    const n = b(t), s = e.kt;\n    let i = n.fc;\n    return n.persistence.runTransaction(\"Apply remote event\", \"readwrite-primary\", (t => {\n        const r = n.Ec.Nr({\n            Wr: !0\n        });\n        // Reset newTargetDataByTargetMap in case this transaction gets re-run.\n                i = n.fc;\n        const o = [];\n        e.Fe.forEach(((e, r) => {\n            const c = i.get(r);\n            if (!c) return;\n            // Only update the remote keys if the target is still active. This\n            // ensures that we can persist the updated target data along with\n            // the updated assignment.\n                        o.push(n._o.sr(t, e.Qe, r).next((() => n._o.er(t, e.qe, r))));\n            const a = e.resumeToken;\n            // Update the resume token if the change includes one.\n                        if (a.l() > 0) {\n                const u = c.Lt(a, s).Mt(t.bs);\n                i = i.zt(r, u), \n                // Update the target data if there are target changes (or if\n                // sufficient time has passed since the last update).\n                /**\n * Returns true if the newTargetData should be persisted during an update of\n * an active target. TargetData should always be persisted when a target is\n * being released and should not call this function.\n *\n * While the target is active, TargetData updates can be omitted when nothing\n * about the target has changed except metadata like the resume token or\n * snapshot version. Occasionally it's worth the extra write to prevent these\n * values from getting too stale after a crash, but this doesn't have to be\n * too frequent.\n */\n                function(t, e, n) {\n                    // Always persist target data if we don't already have a resume token.\n                    if (p(e.resumeToken.l() > 0), 0 === t.resumeToken.l()) return !0;\n                    // Don't allow resume token changes to be buffered indefinitely. This\n                    // allows us to be reasonably up-to-date after a crash and avoids needing\n                    // to loop over all active queries on shutdown. Especially in the browser\n                    // we may not get time to do anything interesting while the current tab is\n                    // closing.\n                                        if (e.kt.W() - t.kt.W() >= 3e8) return !0;\n                    // Otherwise if the only thing that has changed about a target is its resume\n                    // token it's not worth persisting. Note that the RemoteStore keeps an\n                    // in-memory view of the currently active targets which includes the current\n                    // resume token, so stream failure or user changes will still use an\n                    // up-to-date resume token regardless of what we do here.\n                                        return n.qe.size + n.Ue.size + n.Qe.size > 0;\n                }\n                /**\n * Notifies local store of the changed views to locally pin documents.\n */ (c, u, e) && o.push(n._o.Hi(t, u));\n            }\n        }));\n        let c = un();\n        // HACK: The only reason we allow a null snapshot version is so that we\n        // can synthesize remote events when we get permission denied errors while\n        // trying to resolve the state of a locally cached document that is in\n        // limbo.\n        if (e.ke.forEach(((s, i) => {\n            e.Me.has(s) && o.push(n.persistence.Ti.Or(t, s));\n        })), \n        // Each loop iteration only affects its \"own\" doc, so it's safe to get all the remote\n        // documents in advance in a single call.\n        o.push(ur(t, r, e.ke, s, void 0).next((t => {\n            c = t;\n        }))), !s.isEqual(W.min())) {\n            const e = n._o.Qi(t).next((e => n._o.Wi(t, t.bs, s)));\n            o.push(e);\n        }\n        return ws.Ln(o).next((() => r.apply(t))).next((() => n.Tc.Zo(t, c)));\n    })).then((t => (n.fc = i, t)));\n}\n\n/**\n * Populates document change buffer with documents from backend or a bundle.\n * Returns the document changes resulting from applying those documents.\n *\n * @param txn - Transaction to use to read existing documents from storage.\n * @param documentBuffer - Document buffer to collect the resulted changes to be\n *        applied to storage.\n * @param documents - Documents to be applied.\n * @param globalVersion - A `SnapshotVersion` representing the read time if all\n *        documents have the same read time.\n * @param documentVersions - A DocumentKey-to-SnapshotVersion map if documents\n *        have their own read time.\n *\n * Note: this function will use `documentVersions` if it is defined;\n * when it is not defined, resorts to `globalVersion`.\n */ function ur(t, e, n, s, \n// TODO(wuandy): We could add `readTime` to MaybeDocument instead to remove\n// this parameter.\ni) {\n    let r = En();\n    return n.forEach((t => r = r.add(t))), e.getEntries(t, r).next((t => {\n        let r = un();\n        return n.forEach(((n, o) => {\n            const c = t.get(n), a = (null == i ? void 0 : i.get(n)) || s;\n            // Note: The order of the steps below is important, since we want\n            // to ensure that rejected limbo resolutions (which fabricate\n            // NoDocuments with SnapshotVersion.min()) never add documents to\n            // cache.\n            o instanceof St && o.version.isEqual(W.min()) ? (\n            // NoDocuments with SnapshotVersion.min() are used in manufactured\n            // events. We remove these documents from cache since we lost\n            // access.\n            e.li(n, a), r = r.zt(n, o)) : null == c || o.version._(c.version) > 0 || 0 === o.version._(c.version) && c.hasPendingWrites ? (e.ai(o, a), \n            r = r.zt(n, o)) : R(\"LocalStore\", \"Ignoring outdated watch update for \", n, \". Current version:\", c.version, \" Watch version:\", o.version);\n        })), r;\n    }));\n}\n\n/**\n * Gets the mutation batch after the passed in batchId in the mutation queue\n * or null if empty.\n * @param afterBatchId - If provided, the batch to search after.\n * @returns The next mutation or null if there wasn't one.\n */\nfunction hr(t, e) {\n    const n = b(t);\n    return n.persistence.runTransaction(\"Get next mutation batch\", \"readonly\", (t => (void 0 === e && (e = -1), \n    n.zo.gi(t, e))));\n}\n\n/**\n * Reads the current value of a Document with a given key or null if not\n * found - used for testing.\n */\n/**\n * Assigns the given target an internal ID so that its results can be pinned so\n * they don't get GC'd. A target must be allocated in the local store before\n * the store can be used to manage its view.\n *\n * Allocating an already allocated `Target` will return the existing `TargetData`\n * for that `Target`.\n */\nfunction lr(t, e) {\n    const n = b(t);\n    return n.persistence.runTransaction(\"Allocate target\", \"readwrite\", (t => {\n        let s;\n        return n._o.tr(t, e).next((i => i ? (\n        // This target has been listened to previously, so reuse the\n        // previous targetID.\n        // TODO(mcg): freshen last accessed date?\n        s = i, ws.resolve(s)) : n._o.Bi(t).next((i => (s = new Ee(e, i, 0 /* Listen */ , t.bs), \n        n._o.ji(t, s).next((() => s)))))));\n    })).then((t => {\n        // If Multi-Tab is enabled, the existing target data may be newer than\n        // the in-memory data\n        const s = n.fc.get(t.targetId);\n        return (null === s || t.kt._(s.kt) > 0) && (n.fc = n.fc.zt(t.targetId, t), n.dc.set(e, t.targetId)), \n        t;\n    }));\n}\n\n/**\n * Returns the TargetData as seen by the LocalStore, including updates that may\n * have not yet been persisted to the TargetCache.\n */\n// Visible for testing.\n/**\n * Unpins all the documents associated with the given target. If\n * `keepPersistedTargetData` is set to false and Eager GC enabled, the method\n * directly removes the associated target data from the target cache.\n *\n * Releasing a non-existing `Target` is a no-op.\n */\n// PORTING NOTE: `keepPersistedTargetData` is multi-tab only.\nasync function _r(t, e, n) {\n    const s = b(t), i = s.fc.get(e), r = n ? \"readwrite\" : \"readwrite-primary\";\n    try {\n        n || await s.persistence.runTransaction(\"Release target\", r, (t => s.persistence.Ti.removeTarget(t, i)));\n    } catch (t) {\n        if (!As(t)) throw t;\n        // All `releaseTarget` does is record the final metadata state for the\n        // target, but we've been recording this periodically during target\n        // activity. If we lose this write this could cause a very slight\n        // difference in the order of target deletion during GC, but we\n        // don't define exact LRU semantics so this is acceptable.\n        R(\"LocalStore\", `Failed to update sequence numbers for target ${e}: ${t}`);\n    }\n    s.fc = s.fc.remove(e), s.dc.delete(i.target);\n}\n\n/**\n * Runs the specified query against the local store and returns the results,\n * potentially taking advantage of query data from previous executions (such\n * as the set of remote keys).\n *\n * @param usePreviousResults - Whether results from previous executions can\n * be used to optimize this query execution.\n */ function fr(t, e, n) {\n    const s = b(t);\n    let i = W.min(), r = En();\n    return s.persistence.runTransaction(\"Execute query\", \"readonly\", (t => function(t, e, n) {\n        const s = b(t), i = s.dc.get(n);\n        return void 0 !== i ? ws.resolve(s.fc.get(i)) : s._o.tr(e, n);\n    }(s, t, ae(e)).next((e => {\n        if (e) return i = e.lastLimboFreeSnapshotVersion, s._o.rr(t, e.targetId).next((t => {\n            r = t;\n        }));\n    })).next((() => s._c.Kr(t, e, n ? i : W.min(), n ? r : En()))).next((t => ({\n        documents: t,\n        Rc: r\n    })))));\n}\n\n// PORTING NOTE: Multi-Tab only.\nfunction dr(t, e) {\n    const n = b(t), s = b(n._o), i = n.fc.get(e);\n    return i ? Promise.resolve(i.target) : n.persistence.runTransaction(\"Get target data\", \"readonly\", (t => s.Sn(t, e).next((t => t ? t.target : null))));\n}\n\n/**\n * Returns the set of documents that have been updated since the last call.\n * If this is the first call, returns the set of changes since client\n * initialization. Further invocations will return document that have changed\n * since the prior call.\n */\n// PORTING NOTE: Multi-Tab only.\nfunction wr(t) {\n    const e = b(t);\n    return e.persistence.runTransaction(\"Get new document changes\", \"readonly\", (t => function(t, e, n) {\n        const s = b(t);\n        let i = un(), r = si(n);\n        const o = Ki(e), c = IDBKeyRange.lowerBound(r, !0);\n        return o.hs({\n            index: Bs.readTimeIndex,\n            range: c\n        }, ((t, e) => {\n            // Unlike `getEntry()` and others, `getNewDocumentChanges()` parses\n            // the documents directly since we want to keep sentinel deletes.\n            const n = ei(s.Qt, e);\n            i = i.zt(n.key, n), r = e.readTime;\n        })).next((() => ({\n            Go: i,\n            readTime: ii(r)\n        })));\n    }\n    /**\n * Returns the read time of the most recently read document in the cache, or\n * SnapshotVersion.min() if not available.\n */\n    // PORTING NOTE: This is only used for multi-tab synchronization.\n    (e.Ec, t, e.wc))).then((({Go: t, readTime: n}) => (e.wc = n, t)));\n}\n\n/**\n * Reads the newest document change from persistence and moves the internal\n * synchronization marker forward so that calls to `getNewDocumentChanges()`\n * only return changes that happened after client initialization.\n */\n// PORTING NOTE: Multi-Tab only.\nasync function Er(t) {\n    const e = b(t);\n    return e.persistence.runTransaction(\"Synchronize last document change read time\", \"readonly\", (t => function(t) {\n        const e = Ki(t);\n        // If there are no existing entries, we return SnapshotVersion.min().\n                let n = W.min();\n        return e.hs({\n            index: Bs.readTimeIndex,\n            reverse: !0\n        }, ((t, e, s) => {\n            e.readTime && (n = ii(e.readTime)), s.done();\n        })).next((() => n));\n    }(t))).then((t => {\n        e.wc = t;\n    }));\n}\n\n/**\n * Creates a new target using the given bundle name, which will be used to\n * hold the keys of all documents from the bundle in query-document mappings.\n * This ensures that the loaded documents do not get garbage collected\n * right away.\n */\n/**\n * Applies the documents from a bundle to the \"ground-state\" (remote)\n * documents.\n *\n * LocalDocuments are re-calculated if there are remaining mutations in the\n * queue.\n */\nasync function Tr(t, e, n, s) {\n    const i = b(t);\n    let r = En(), o = un(), c = dn();\n    for (const t of n) {\n        const n = e.Pc(t.metadata.name);\n        t.document && (r = r.add(n)), o = o.zt(n, e.yc(t)), c = c.zt(n, e.gc(t.metadata.readTime));\n    }\n    const a = i.Ec.Nr({\n        Wr: !0\n    }), u = await lr(i, function(t) {\n        // It is OK that the path used for the query is not valid, because this will\n        // not be read and queried.\n        return ae(ee(G.ot(\"__bundle__/docs/\" + t)));\n    }(s));\n    // Allocates a target to hold all document keys from the bundle, such that\n    // they will not get garbage collected right away.\n        return i.persistence.runTransaction(\"Apply bundle documents\", \"readwrite\", (t => ur(t, a, o, W.min(), c).next((e => (a.apply(t), \n    e))).next((e => i._o.Yi(t, u.targetId).next((() => i._o.er(t, r, u.targetId))).next((() => i.Tc.Zo(t, e)))))));\n}\n\n/**\n * Returns a promise of a boolean to indicate if the given bundle has already\n * been loaded and the create time is newer than the current loading bundle.\n */\n/**\n * Saves the given `NamedQuery` to local persistence.\n */\nasync function Ir(t, e, n = En()) {\n    // Allocate a target for the named query such that it can be resumed\n    // from associated read time if users use it to listen.\n    // NOTE: this also means if no corresponding target exists, the new target\n    // will remain active and will not get collected, unless users happen to\n    // unlisten the query somehow.\n    const s = await lr(t, ae(hi(e.bundledQuery))), i = b(t);\n    return i.persistence.runTransaction(\"Save named query\", \"readwrite\", (t => {\n        const r = Mn(e.readTime);\n        // Simply save the query itself if it is older than what the SDK already\n        // has.\n                if (s.kt._(r) >= 0) return i.wo.$s(t, e);\n        // Update existing target data because the query from the bundle is newer.\n                const o = s.Lt(N.T, r);\n        return i.fc = i.fc.zt(o.targetId, o), i._o.Hi(t, o).next((() => i._o.Yi(t, s.targetId))).next((() => i._o.er(t, n, s.targetId))).next((() => i.wo.$s(t, e)));\n    }));\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ class mr {\n    constructor(t) {\n        this.Qt = t, this.Vc = new Map, this.bc = new Map;\n    }\n    ks(t, e) {\n        return ws.resolve(this.Vc.get(e));\n    }\n    Ms(t, e) {\n        /** Decodes a BundleMetadata proto into a BundleMetadata object. */\n        var n;\n        return this.Vc.set(e.id, {\n            id: (n = e).id,\n            version: n.version,\n            createTime: Mn(n.createTime)\n        }), ws.resolve();\n    }\n    Ls(t, e) {\n        return ws.resolve(this.bc.get(e));\n    }\n    $s(t, e) {\n        return this.bc.set(e.name, function(t) {\n            return {\n                name: t.name,\n                query: hi(t.bundledQuery),\n                readTime: Mn(t.readTime)\n            };\n        }(e)), ws.resolve();\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * A collection of references to a document from some kind of numbered entity\n * (either a target ID or batch ID). As references are added to or removed from\n * the set corresponding events are emitted to a registered garbage collector.\n *\n * Each reference is represented by a DocumentReference object. Each of them\n * contains enough information to uniquely identify the reference. They are all\n * stored primarily in a set sorted by key. A document is considered garbage if\n * there's no references in that set (this can be efficiently checked thanks to\n * sorting by key).\n *\n * ReferenceSet also keeps a secondary set that contains references sorted by\n * IDs. This one is used to efficiently implement removal of all references by\n * some target ID.\n */ class Ar {\n    constructor() {\n        // A set of outstanding references to a document sorted by key.\n        this.vc = new on(Rr.Sc), \n        // A set of outstanding references to a document sorted by target id.\n        this.Dc = new on(Rr.Cc);\n    }\n    /** Returns true if the reference set contains no references. */    et() {\n        return this.vc.et();\n    }\n    /** Adds a reference to the given document key for the given ID. */    nr(t, e) {\n        const n = new Rr(t, e);\n        this.vc = this.vc.add(n), this.Dc = this.Dc.add(n);\n    }\n    /** Add references to the given document keys for the given ID. */    xc(t, e) {\n        t.forEach((t => this.nr(t, e)));\n    }\n    /**\n     * Removes a reference to the given document key for the given\n     * ID.\n     */    ir(t, e) {\n        this.Nc(new Rr(t, e));\n    }\n    Fc(t, e) {\n        t.forEach((t => this.ir(t, e)));\n    }\n    /**\n     * Clears all references with a given ID. Calls removeRef() for each key\n     * removed.\n     */    Oc(t) {\n        const e = new J(new G([])), n = new Rr(e, t), s = new Rr(e, t + 1), i = [];\n        return this.Dc.me([ n, s ], (t => {\n            this.Nc(t), i.push(t.key);\n        })), i;\n    }\n    kc() {\n        this.vc.forEach((t => this.Nc(t)));\n    }\n    Nc(t) {\n        this.vc = this.vc.delete(t), this.Dc = this.Dc.delete(t);\n    }\n    Mc(t) {\n        const e = new J(new G([])), n = new Rr(e, t), s = new Rr(e, t + 1);\n        let i = En();\n        return this.Dc.me([ n, s ], (t => {\n            i = i.add(t.key);\n        })), i;\n    }\n    Oi(t) {\n        const e = new Rr(t, 0), n = this.vc.Re(e);\n        return null !== n && t.isEqual(n.key);\n    }\n}\n\nclass Rr {\n    constructor(t, e) {\n        this.key = t, this.Lc = e;\n    }\n    /** Compare by key then by ID */    static Sc(t, e) {\n        return J.H(t.key, e.key) || D(t.Lc, e.Lc);\n    }\n    /** Compare by ID then by key */    static Cc(t, e) {\n        return D(t.Lc, e.Lc) || J.H(t.key, e.key);\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ class Pr {\n    constructor(t, e) {\n        this.Ei = t, this.Ti = e, \n        /**\n         * The set of all mutations that have been sent but not yet been applied to\n         * the backend.\n         */\n        this.zo = [], \n        /** Next value to use when assigning sequential IDs to each mutation batch. */\n        this.$c = 1, \n        /** An ordered mapping between documents and the mutations batch IDs. */\n        this.Bc = new on(Rr.Sc);\n    }\n    Ai(t) {\n        return ws.resolve(0 === this.zo.length);\n    }\n    Ri(t, e, n, s) {\n        const i = this.$c;\n        if (this.$c++, this.zo.length > 0) {\n            this.zo[this.zo.length - 1];\n        }\n        const r = new Xs(i, e, n, s);\n        this.zo.push(r);\n        // Track references by document key and index collection parents.\n        for (const e of s) this.Bc = this.Bc.add(new Rr(e.key, i)), this.Ei.qs(t, e.key.path.X());\n        return ws.resolve(r);\n    }\n    Pi(t, e) {\n        return ws.resolve(this.qc(e));\n    }\n    gi(t, e) {\n        const n = e + 1, s = this.Uc(n), i = s < 0 ? 0 : s;\n        // The requested batchId may still be out of range so normalize it to the\n        // start of the queue.\n                return ws.resolve(this.zo.length > i ? this.zo[i] : null);\n    }\n    Vi() {\n        return ws.resolve(0 === this.zo.length ? -1 : this.$c - 1);\n    }\n    pi(t) {\n        return ws.resolve(this.zo.slice());\n    }\n    bi(t, e) {\n        const n = new Rr(e, 0), s = new Rr(e, Number.POSITIVE_INFINITY), i = [];\n        return this.Bc.me([ n, s ], (t => {\n            const e = this.qc(t.Lc);\n            i.push(e);\n        })), ws.resolve(i);\n    }\n    vi(t, e) {\n        let n = new on(D);\n        return e.forEach((t => {\n            const e = new Rr(t, 0), s = new Rr(t, Number.POSITIVE_INFINITY);\n            this.Bc.me([ e, s ], (t => {\n                n = n.add(t.Lc);\n            }));\n        })), ws.resolve(this.Qc(n));\n    }\n    Di(t, e) {\n        // Use the query path as a prefix for testing if a document matches the\n        // query.\n        const n = e.path, s = n.length + 1;\n        // Construct a document reference for actually scanning the index. Unlike\n        // the prefix the document key in this reference must have an even number of\n        // segments. The empty segment can be used a suffix of the query path\n        // because it precedes all other segments in an ordered traversal.\n        let i = n;\n        J.wt(i) || (i = i.child(\"\"));\n        const r = new Rr(new J(i), 0);\n        // Find unique batchIDs referenced by all documents potentially matching the\n        // query.\n                let o = new on(D);\n        return this.Bc.Ae((t => {\n            const e = t.key.path;\n            return !!n.nt(e) && (\n            // Rows with document keys more than one segment longer than the query\n            // path can't be matches. For example, a query on 'rooms' can't match\n            // the document /rooms/abc/messages/xyx.\n            // TODO(mcg): we'll need a different scanner when we implement\n            // ancestor queries.\n            e.length === s && (o = o.add(t.Lc)), !0);\n        }), r), ws.resolve(this.Qc(o));\n    }\n    Qc(t) {\n        // Construct an array of matching batches, sorted by batchID to ensure that\n        // multiple mutations affecting the same document key are applied in order.\n        const e = [];\n        return t.forEach((t => {\n            const n = this.qc(t);\n            null !== n && e.push(n);\n        })), e;\n    }\n    Ci(t, e) {\n        p(0 === this.Kc(e.batchId, \"removed\")), this.zo.shift();\n        let n = this.Bc;\n        return ws.forEach(e.mutations, (s => {\n            const i = new Rr(s.key, e.batchId);\n            return n = n.delete(i), this.Ti.Ni(t, s.key);\n        })).next((() => {\n            this.Bc = n;\n        }));\n    }\n    xi(t) {\n        // No-op since the memory mutation queue does not maintain a separate cache.\n    }\n    Oi(t, e) {\n        const n = new Rr(e, 0), s = this.Bc.Re(n);\n        return ws.resolve(e.isEqual(s && s.key));\n    }\n    Fi(t) {\n        return this.zo.length, ws.resolve();\n    }\n    /**\n     * Finds the index of the given batchId in the mutation queue and asserts that\n     * the resulting index is within the bounds of the queue.\n     *\n     * @param batchId - The batchId to search for\n     * @param action - A description of what the caller is doing, phrased in passive\n     * form (e.g. \"acknowledged\" in a routine that acknowledges batches).\n     */    Kc(t, e) {\n        return this.Uc(t);\n    }\n    /**\n     * Finds the index of the given batchId in the mutation queue. This operation\n     * is O(1).\n     *\n     * @returns The computed index of the batch with the given batchId, based on\n     * the state of the queue. Note this index can be negative if the requested\n     * batchId has already been remvoed from the queue or past the end of the\n     * queue if the batchId is larger than the last added batch.\n     */    Uc(t) {\n        if (0 === this.zo.length) \n        // As an index this is past the end of the queue\n        return 0;\n        // Examine the front of the queue to figure out the difference between the\n        // batchId and indexes in the array. Note that since the queue is ordered\n        // by batchId, if the first batch has a larger batchId then the requested\n        // batchId doesn't exist in the queue.\n                return t - this.zo[0].batchId;\n    }\n    /**\n     * A version of lookupMutationBatch that doesn't return a promise, this makes\n     * other functions that uses this code easier to read and more efficent.\n     */    qc(t) {\n        const e = this.Uc(t);\n        if (e < 0 || e >= this.zo.length) return null;\n        return this.zo[e];\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * The memory-only RemoteDocumentCache for IndexedDb. To construct, invoke\n * `newMemoryRemoteDocumentCache()`.\n */\nclass yr {\n    /**\n     * @param sizer - Used to assess the size of a document. For eager GC, this is\n     * expected to just return 0 to avoid unnecessarily doing the work of\n     * calculating the size.\n     */\n    constructor(t, e) {\n        this.Ei = t, this.Wc = e, \n        /** Underlying cache of documents and their read times. */\n        this.docs = new nn(J.H), \n        /** Size of all cached documents. */\n        this.size = 0;\n    }\n    /**\n     * Adds the supplied entry to the cache and updates the cache size as appropriate.\n     *\n     * All calls of `addEntry`  are required to go through the RemoteDocumentChangeBuffer\n     * returned by `newChangeBuffer()`.\n     */    ai(t, e, n) {\n        const s = e.key, i = this.docs.get(s), r = i ? i.size : 0, o = this.Wc(e);\n        return this.docs = this.docs.zt(s, {\n            hi: e,\n            size: o,\n            readTime: n\n        }), this.size += o - r, this.Ei.qs(t, s.path.X());\n    }\n    /**\n     * Removes the specified entry from the cache and updates the cache size as appropriate.\n     *\n     * All calls of `removeEntry` are required to go through the RemoteDocumentChangeBuffer\n     * returned by `newChangeBuffer()`.\n     */    li(t) {\n        const e = this.docs.get(t);\n        e && (this.docs = this.docs.remove(t), this.size -= e.size);\n    }\n    _i(t, e) {\n        const n = this.docs.get(e);\n        return ws.resolve(n ? n.hi : null);\n    }\n    getEntries(t, e) {\n        let n = hn();\n        return e.forEach((t => {\n            const e = this.docs.get(t);\n            n = n.zt(t, e ? e.hi : null);\n        })), ws.resolve(n);\n    }\n    Kr(t, e, n) {\n        let s = _n();\n        // Documents are ordered by key, so we can use a prefix scan to narrow down\n        // the documents we need to match the query against.\n                const i = new J(e.path.child(\"\")), r = this.docs.ee(i);\n        for (;r.ce(); ) {\n            const {key: t, value: {hi: i, readTime: o}} = r.oe();\n            if (!e.path.nt(t.path)) break;\n            o._(n) <= 0 || i instanceof vt && fe(e, i) && (s = s.zt(i.key, i));\n        }\n        return ws.resolve(s);\n    }\n    jc(t, e) {\n        return ws.forEach(this.docs, (t => e(t)));\n    }\n    Nr(t) {\n        // `trackRemovals` is ignores since the MemoryRemoteDocumentCache keeps\n        // a separate changelog and does not need special handling for removals.\n        return new gr(this);\n    }\n    kr(t) {\n        return ws.resolve(this.size);\n    }\n}\n\n/**\n * Creates a new memory-only RemoteDocumentCache.\n *\n * @param indexManager - A class that manages collection group indices.\n * @param sizer - Used to assess the size of a document. For eager GC, this is\n * expected to just return 0 to avoid unnecessarily doing the work of\n * calculating the size.\n */\n/**\n * Handles the details of adding and updating documents in the MemoryRemoteDocumentCache.\n */\nclass gr extends Pi {\n    constructor(t) {\n        super(), this.jr = t;\n    }\n    wi(t) {\n        const e = [];\n        return this.ri.forEach(((n, s) => {\n            s && s.hi ? e.push(this.jr.ai(t, s.hi, this.ci(n))) : this.jr.li(n);\n        })), ws.Ln(e);\n    }\n    fi(t, e) {\n        return this.jr._i(t, e);\n    }\n    di(t, e) {\n        return this.jr.getEntries(t, e);\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ class Vr {\n    constructor(t) {\n        this.persistence = t, \n        /**\n         * Maps a target to the data about that target\n         */\n        this.Gc = new Ri((t => Nt(t)), Ot), \n        /** The last received snapshot version. */\n        this.lastRemoteSnapshotVersion = W.min(), \n        /** The highest numbered target ID encountered. */\n        this.highestTargetId = 0, \n        /** The highest sequence number encountered. */\n        this.zc = 0, \n        /**\n         * A ordered bidirectional mapping between documents and the remote target\n         * IDs.\n         */\n        this.Hc = new Ar, this.targetCount = 0, this.Jc = Di.Li();\n    }\n    In(t, e) {\n        return this.Gc.forEach(((t, n) => e(n))), ws.resolve();\n    }\n    Qi(t) {\n        return ws.resolve(this.lastRemoteSnapshotVersion);\n    }\n    Ki(t) {\n        return ws.resolve(this.zc);\n    }\n    Bi(t) {\n        return this.highestTargetId = this.Jc.next(), ws.resolve(this.highestTargetId);\n    }\n    Wi(t, e, n) {\n        return n && (this.lastRemoteSnapshotVersion = n), e > this.zc && (this.zc = e), \n        ws.resolve();\n    }\n    Gi(t) {\n        this.Gc.set(t.target, t);\n        const e = t.targetId;\n        e > this.highestTargetId && (this.Jc = new Di(e), this.highestTargetId = e), t.sequenceNumber > this.zc && (this.zc = t.sequenceNumber);\n    }\n    ji(t, e) {\n        return this.Gi(e), this.targetCount += 1, ws.resolve();\n    }\n    Hi(t, e) {\n        return this.Gi(e), ws.resolve();\n    }\n    Ji(t, e) {\n        return this.Gc.delete(e.target), this.Hc.Oc(e.targetId), this.targetCount -= 1, \n        ws.resolve();\n    }\n    Xi(t, e, n) {\n        let s = 0;\n        const i = [];\n        return this.Gc.forEach(((r, o) => {\n            o.sequenceNumber <= e && null === n.get(o.targetId) && (this.Gc.delete(r), i.push(this.Yi(t, o.targetId)), \n            s++);\n        })), ws.Ln(i).next((() => s));\n    }\n    Zi(t) {\n        return ws.resolve(this.targetCount);\n    }\n    tr(t, e) {\n        const n = this.Gc.get(e) || null;\n        return ws.resolve(n);\n    }\n    er(t, e, n) {\n        return this.Hc.xc(e, n), ws.resolve();\n    }\n    sr(t, e, n) {\n        this.Hc.Fc(e, n);\n        const s = this.persistence.Ti, i = [];\n        return s && e.forEach((e => {\n            i.push(s.Ni(t, e));\n        })), ws.Ln(i);\n    }\n    Yi(t, e) {\n        return this.Hc.Oc(e), ws.resolve();\n    }\n    rr(t, e) {\n        const n = this.Hc.Mc(e);\n        return ws.resolve(n);\n    }\n    Oi(t, e) {\n        return ws.resolve(this.Hc.Oi(e));\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * A memory-backed instance of Persistence. Data is stored only in RAM and\n * not persisted across sessions.\n */\nclass pr {\n    /**\n     * The constructor accepts a factory for creating a reference delegate. This\n     * allows both the delegate and this instance to have strong references to\n     * each other without having nullable fields that would then need to be\n     * checked or asserted on every access.\n     */\n    constructor(t, e) {\n        this.Yc = {}, this.so = new Q(0), this.io = !1, this.io = !0, this.Ti = t(this), \n        this._o = new Vr(this);\n        this.Ei = new di, this.fo = function(t, e) {\n            return new yr(t, e);\n        }(this.Ei, (t => this.Ti.Xc(t))), this.Qt = new ti(e), this.wo = new mr(this.Qt);\n    }\n    start() {\n        return Promise.resolve();\n    }\n    Mo() {\n        // No durable state to ensure is closed on shutdown.\n        return this.io = !1, Promise.resolve();\n    }\n    get Er() {\n        return this.io;\n    }\n    Po() {\n        // No op.\n    }\n    yo() {\n        // No op.\n    }\n    Ko() {\n        return this.Ei;\n    }\n    Qo(t) {\n        let e = this.Yc[t.A()];\n        return e || (e = new Pr(this.Ei, this.Ti), this.Yc[t.A()] = e), e;\n    }\n    Sr() {\n        return this._o;\n    }\n    Fr() {\n        return this.fo;\n    }\n    Wo() {\n        return this.wo;\n    }\n    runTransaction(t, e, n) {\n        R(\"MemoryPersistence\", \"Starting transaction:\", t);\n        const s = new br(this.so.next());\n        return this.Ti.Zc(), n(s).next((t => this.Ti.ta(s).next((() => t)))).kn().then((t => (s.Vs(), \n        t)));\n    }\n    ea(t, e) {\n        return ws.$n(Object.values(this.Yc).map((n => () => n.Oi(t, e))));\n    }\n}\n\n/**\n * Memory persistence is not actually transactional, but future implementations\n * may have transaction-scoped state.\n */ class br extends vs {\n    constructor(t) {\n        super(), this.bs = t;\n    }\n}\n\nclass vr {\n    constructor(t) {\n        this.persistence = t, \n        /** Tracks all documents that are active in Query views. */\n        this.na = new Ar, \n        /** The list of documents that are potentially GCed after each transaction. */\n        this.sa = null;\n    }\n    static ia(t) {\n        return new vr(t);\n    }\n    get ra() {\n        if (this.sa) return this.sa;\n        throw V();\n    }\n    nr(t, e, n) {\n        return this.na.nr(n, e), this.ra.delete(n.toString()), ws.resolve();\n    }\n    ir(t, e, n) {\n        return this.na.ir(n, e), this.ra.add(n.toString()), ws.resolve();\n    }\n    Ni(t, e) {\n        return this.ra.add(e.toString()), ws.resolve();\n    }\n    removeTarget(t, e) {\n        this.na.Oc(e.targetId).forEach((t => this.ra.add(t.toString())));\n        const n = this.persistence.Sr();\n        return n.rr(t, e.targetId).next((t => {\n            t.forEach((t => this.ra.add(t.toString())));\n        })).next((() => n.Ji(t, e)));\n    }\n    Zc() {\n        this.sa = new Set;\n    }\n    ta(t) {\n        // Remove newly orphaned documents.\n        const e = this.persistence.Fr().Nr();\n        return ws.forEach(this.ra, (n => {\n            const s = J._t(n);\n            return this.oa(t, s).next((t => {\n                t || e.li(s);\n            }));\n        })).next((() => (this.sa = null, e.apply(t))));\n    }\n    Or(t, e) {\n        return this.oa(t, e).next((t => {\n            t ? this.ra.delete(e.toString()) : this.ra.add(e.toString());\n        }));\n    }\n    Xc(t) {\n        // For eager GC, we don't care about the document size, there are no size thresholds.\n        return 0;\n    }\n    oa(t, e) {\n        return ws.$n([ () => ws.resolve(this.na.Oi(e)), () => this.persistence.Sr().Oi(t, e), () => this.persistence.ea(t, e) ]);\n    }\n}\n\n/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n// The format of the LocalStorage key that stores the client state is:\n//     firestore_clients_<persistence_prefix>_<instance_key>\n/** Assembles the key for a client state in WebStorage */\nfunction Sr(t, e) {\n    return `firestore_clients_${t}_${e}`;\n}\n\n// The format of the WebStorage key that stores the mutation state is:\n//     firestore_mutations_<persistence_prefix>_<batch_id>\n//     (for unauthenticated users)\n// or: firestore_mutations_<persistence_prefix>_<batch_id>_<user_uid>\n\n// 'user_uid' is last to avoid needing to escape '_' characters that it might\n// contain.\n/** Assembles the key for a mutation batch in WebStorage */\nfunction Dr(t, e, n) {\n    let s = `firestore_mutations_${t}_${n}`;\n    return e.m() && (s += \"_\" + e.uid), s;\n}\n\n// The format of the WebStorage key that stores a query target's metadata is:\n//     firestore_targets_<persistence_prefix>_<target_id>\n/** Assembles the key for a query state in WebStorage */\nfunction Cr(t, e) {\n    return `firestore_targets_${t}_${e}`;\n}\n\n// The WebStorage prefix that stores the primary tab's online state. The\n// format of the key is:\n//     firestore_online_state_<persistence_prefix>\n/**\n * Holds the state of a mutation batch, including its user ID, batch ID and\n * whether the batch is 'pending', 'acknowledged' or 'rejected'.\n */\n// Visible for testing\nclass xr {\n    constructor(t, e, n, s) {\n        this.user = t, this.batchId = e, this.state = n, this.error = s;\n    }\n    /**\n     * Parses a MutationMetadata from its JSON representation in WebStorage.\n     * Logs a warning and returns null if the format of the data is not valid.\n     */    static ca(t, e, n) {\n        const s = JSON.parse(n);\n        let i = \"object\" == typeof s && -1 !== [ \"pending\", \"acknowledged\", \"rejected\" ].indexOf(s.state) && (void 0 === s.error || \"object\" == typeof s.error), r = void 0;\n        return i && s.error && (i = \"string\" == typeof s.error.message && \"string\" == typeof s.error.code, \n        i && (r = new O(s.error.code, s.error.message))), i ? new xr(t, e, s.state, r) : (P(\"SharedClientState\", `Failed to parse mutation state for ID '${e}': ${n}`), \n        null);\n    }\n    aa() {\n        const t = {\n            state: this.state,\n            updateTimeMs: Date.now()\n        };\n        return this.error && (t.error = {\n            code: this.error.code,\n            message: this.error.message\n        }), JSON.stringify(t);\n    }\n}\n\n/**\n * Holds the state of a query target, including its target ID and whether the\n * target is 'not-current', 'current' or 'rejected'.\n */\n// Visible for testing\nclass Nr {\n    constructor(t, e, n) {\n        this.targetId = t, this.state = e, this.error = n;\n    }\n    /**\n     * Parses a QueryTargetMetadata from its JSON representation in WebStorage.\n     * Logs a warning and returns null if the format of the data is not valid.\n     */    static ca(t, e) {\n        const n = JSON.parse(e);\n        let s = \"object\" == typeof n && -1 !== [ \"not-current\", \"current\", \"rejected\" ].indexOf(n.state) && (void 0 === n.error || \"object\" == typeof n.error), i = void 0;\n        return s && n.error && (s = \"string\" == typeof n.error.message && \"string\" == typeof n.error.code, \n        s && (i = new O(n.error.code, n.error.message))), s ? new Nr(t, n.state, i) : (P(\"SharedClientState\", `Failed to parse target state for ID '${t}': ${e}`), \n        null);\n    }\n    aa() {\n        const t = {\n            state: this.state,\n            updateTimeMs: Date.now()\n        };\n        return this.error && (t.error = {\n            code: this.error.code,\n            message: this.error.message\n        }), JSON.stringify(t);\n    }\n}\n\n/**\n * This class represents the immutable ClientState for a client read from\n * WebStorage, containing the list of active query targets.\n */ class Fr {\n    constructor(t, e) {\n        this.clientId = t, this.activeTargetIds = e;\n    }\n    /**\n     * Parses a RemoteClientState from the JSON representation in WebStorage.\n     * Logs a warning and returns null if the format of the data is not valid.\n     */    static ca(t, e) {\n        const n = JSON.parse(e);\n        let s = \"object\" == typeof n && n.activeTargetIds instanceof Array, i = In();\n        for (let t = 0; s && t < n.activeTargetIds.length; ++t) s = ht(n.activeTargetIds[t]), \n        i = i.add(n.activeTargetIds[t]);\n        return s ? new Fr(t, i) : (P(\"SharedClientState\", `Failed to parse client data for instance '${t}': ${e}`), \n        null);\n    }\n}\n\n/**\n * This class represents the online state for all clients participating in\n * multi-tab. The online state is only written to by the primary client, and\n * used in secondary clients to update their query views.\n */ class Or {\n    constructor(t, e) {\n        this.clientId = t, this.onlineState = e;\n    }\n    /**\n     * Parses a SharedOnlineState from its JSON representation in WebStorage.\n     * Logs a warning and returns null if the format of the data is not valid.\n     */    static ca(t) {\n        const e = JSON.parse(t);\n        return \"object\" == typeof e && -1 !== [ \"Unknown\", \"Online\", \"Offline\" ].indexOf(e.onlineState) && \"string\" == typeof e.clientId ? new Or(e.clientId, e.onlineState) : (P(\"SharedClientState\", \"Failed to parse online state: \" + t), \n        null);\n    }\n}\n\n/**\n * Metadata state of the local client. Unlike `RemoteClientState`, this class is\n * mutable and keeps track of all pending mutations, which allows us to\n * update the range of pending mutation batch IDs as new mutations are added or\n * removed.\n *\n * The data in `LocalClientState` is not read from WebStorage and instead\n * updated via its instance methods. The updated state can be serialized via\n * `toWebStorageJSON()`.\n */\n// Visible for testing.\nclass kr {\n    constructor() {\n        this.activeTargetIds = In();\n    }\n    ua(t) {\n        this.activeTargetIds = this.activeTargetIds.add(t);\n    }\n    ha(t) {\n        this.activeTargetIds = this.activeTargetIds.delete(t);\n    }\n    /**\n     * Converts this entry into a JSON-encoded format we can use for WebStorage.\n     * Does not encode `clientId` as it is part of the key in WebStorage.\n     */    aa() {\n        const t = {\n            activeTargetIds: this.activeTargetIds.it(),\n            updateTimeMs: Date.now()\n        };\n        return JSON.stringify(t);\n    }\n}\n\n/**\n * `WebStorageSharedClientState` uses WebStorage (window.localStorage) as the\n * backing store for the SharedClientState. It keeps track of all active\n * clients and supports modifications of the local client's data.\n */ class Mr {\n    constructor(t, e, n, s, i) {\n        this.window = t, this.Zr = e, this.persistenceKey = n, this.la = s, this._a = null, \n        this.fa = null, this.M = null, this.da = this.wa.bind(this), this.Ea = new nn(D), \n        this.Er = !1, \n        /**\n         * Captures WebStorage events that occur before `start()` is called. These\n         * events are replayed once `WebStorageSharedClientState` is started.\n         */\n        this.Ta = [];\n        // Escape the special characters mentioned here:\n        // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions\n        const r = n.replace(/[.*+?^${}()|[\\]\\\\]/g, \"\\\\$&\");\n        this.storage = this.window.localStorage, this.currentUser = i, this.Ia = Sr(this.persistenceKey, this.la), \n        this.ma = \n        /** Assembles the key for the current sequence number. */\n        function(t) {\n            return \"firestore_sequence_number_\" + t;\n        }\n        /**\n * @license\n * Copyright 2018 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ (this.persistenceKey), this.Ea = this.Ea.zt(this.la, new kr), this.Aa = new RegExp(`^firestore_clients_${r}_([^_]*)$`), \n        this.Ra = new RegExp(`^firestore_mutations_${r}_(\\\\d+)(?:_(.*))?$`), this.Pa = new RegExp(`^firestore_targets_${r}_(\\\\d+)$`), \n        this.ya = \n        /** Assembles the key for the online state of the primary tab. */\n        function(t) {\n            return \"firestore_online_state_\" + t;\n        }\n        // The WebStorage prefix that plays as a event to indicate the remote documents\n        // might have changed due to some secondary tabs loading a bundle.\n        // format of the key is:\n        //     firestore_bundle_loaded_<persistenceKey>\n        (this.persistenceKey), this.ga = function(t) {\n            return \"firestore_bundle_loaded_\" + t;\n        }\n        // The WebStorage key prefix for the key that stores the last sequence number allocated. The key\n        // looks like 'firestore_sequence_number_<persistence_prefix>'.\n        (this.persistenceKey), \n        // Rather than adding the storage observer during start(), we add the\n        // storage observer during initialization. This ensures that we collect\n        // events before other components populate their initial state (during their\n        // respective start() calls). Otherwise, we might for example miss a\n        // mutation that is added after LocalStore's start() processed the existing\n        // mutations but before we observe WebStorage events.\n        this.window.addEventListener(\"storage\", this.da);\n    }\n    /** Returns 'true' if WebStorage is available in the current environment. */    static Kn(t) {\n        return !(!t || !t.localStorage);\n    }\n    async start() {\n        // Retrieve the list of existing clients to backfill the data in\n        // SharedClientState.\n        const t = await this._a.Uo();\n        for (const e of t) {\n            if (e === this.la) continue;\n            const t = this.getItem(Sr(this.persistenceKey, e));\n            if (t) {\n                const n = Fr.ca(e, t);\n                n && (this.Ea = this.Ea.zt(n.clientId, n));\n            }\n        }\n        this.Va();\n        // Check if there is an existing online state and call the callback handler\n        // if applicable.\n        const e = this.storage.getItem(this.ya);\n        if (e) {\n            const t = this.pa(e);\n            t && this.ba(t);\n        }\n        for (const t of this.Ta) this.wa(t);\n        this.Ta = [], \n        // Register a window unload hook to remove the client metadata entry from\n        // WebStorage even if `shutdown()` was not called.\n        this.window.addEventListener(\"unload\", (() => this.Mo())), this.Er = !0;\n    }\n    B(t) {\n        this.setItem(this.ma, JSON.stringify(t));\n    }\n    va() {\n        return this.Sa(this.Ea);\n    }\n    Da(t) {\n        let e = !1;\n        return this.Ea.forEach(((n, s) => {\n            s.activeTargetIds.has(t) && (e = !0);\n        })), e;\n    }\n    Ca(t) {\n        this.xa(t, \"pending\");\n    }\n    Na(t, e, n) {\n        this.xa(t, e, n), \n        // Once a final mutation result is observed by other clients, they no longer\n        // access the mutation's metadata entry. Since WebStorage replays events\n        // in order, it is safe to delete the entry right after updating it.\n        this.Fa(t);\n    }\n    Oa(t) {\n        let e = \"not-current\";\n        // Lookup an existing query state if the target ID was already registered\n        // by another tab\n                if (this.Da(t)) {\n            const n = this.storage.getItem(Cr(this.persistenceKey, t));\n            if (n) {\n                const s = Nr.ca(t, n);\n                s && (e = s.state);\n            }\n        }\n        return this.ka.ua(t), this.Va(), e;\n    }\n    Ma(t) {\n        this.ka.ha(t), this.Va();\n    }\n    La(t) {\n        return this.ka.activeTargetIds.has(t);\n    }\n    $a(t) {\n        this.removeItem(Cr(this.persistenceKey, t));\n    }\n    Ba(t, e, n) {\n        this.qa(t, e, n);\n    }\n    Ua(t, e, n) {\n        e.forEach((t => {\n            this.Fa(t);\n        })), this.currentUser = t, n.forEach((t => {\n            this.Ca(t);\n        }));\n    }\n    Qa(t) {\n        this.Ka(t);\n    }\n    Wa() {\n        this.ja();\n    }\n    Mo() {\n        this.Er && (this.window.removeEventListener(\"storage\", this.da), this.removeItem(this.Ia), \n        this.Er = !1);\n    }\n    getItem(t) {\n        const e = this.storage.getItem(t);\n        return R(\"SharedClientState\", \"READ\", t, e), e;\n    }\n    setItem(t, e) {\n        R(\"SharedClientState\", \"SET\", t, e), this.storage.setItem(t, e);\n    }\n    removeItem(t) {\n        R(\"SharedClientState\", \"REMOVE\", t), this.storage.removeItem(t);\n    }\n    wa(t) {\n        // Note: The function is typed to take Event to be interface-compatible with\n        // `Window.addEventListener`.\n        const e = t;\n        if (e.storageArea === this.storage) {\n            if (R(\"SharedClientState\", \"EVENT\", e.key, e.newValue), e.key === this.Ia) return void P(\"Received WebStorage notification for local change. Another client might have garbage-collected our state\");\n            this.Zr.po((async () => {\n                if (this.Er) {\n                    if (null !== e.key) if (this.Aa.test(e.key)) {\n                        if (null == e.newValue) {\n                            const t = this.Ga(e.key);\n                            return this.za(t, null);\n                        }\n                        {\n                            const t = this.Ha(e.key, e.newValue);\n                            if (t) return this.za(t.clientId, t);\n                        }\n                    } else if (this.Ra.test(e.key)) {\n                        if (null !== e.newValue) {\n                            const t = this.Ja(e.key, e.newValue);\n                            if (t) return this.Ya(t);\n                        }\n                    } else if (this.Pa.test(e.key)) {\n                        if (null !== e.newValue) {\n                            const t = this.Xa(e.key, e.newValue);\n                            if (t) return this.Za(t);\n                        }\n                    } else if (e.key === this.ya) {\n                        if (null !== e.newValue) {\n                            const t = this.pa(e.newValue);\n                            if (t) return this.ba(t);\n                        }\n                    } else if (e.key === this.ma) {\n                        const t = function(t) {\n                            let e = Q.q;\n                            if (null != t) try {\n                                const n = JSON.parse(t);\n                                p(\"number\" == typeof n), e = n;\n                            } catch (t) {\n                                P(\"SharedClientState\", \"Failed to read sequence number from WebStorage\", t);\n                            }\n                            return e;\n                        }\n                        /**\n * `MemorySharedClientState` is a simple implementation of SharedClientState for\n * clients using memory persistence. The state in this class remains fully\n * isolated and no synchronization is performed.\n */ (e.newValue);\n                        t !== Q.q && this.M(t);\n                    } else if (e.key === this.ga) return this._a.tu();\n                } else this.Ta.push(e);\n            }));\n        }\n    }\n    get ka() {\n        return this.Ea.get(this.la);\n    }\n    Va() {\n        this.setItem(this.Ia, this.ka.aa());\n    }\n    xa(t, e, n) {\n        const s = new xr(this.currentUser, t, e, n), i = Dr(this.persistenceKey, this.currentUser, t);\n        this.setItem(i, s.aa());\n    }\n    Fa(t) {\n        const e = Dr(this.persistenceKey, this.currentUser, t);\n        this.removeItem(e);\n    }\n    Ka(t) {\n        const e = {\n            clientId: this.la,\n            onlineState: t\n        };\n        this.storage.setItem(this.ya, JSON.stringify(e));\n    }\n    qa(t, e, n) {\n        const s = Cr(this.persistenceKey, t), i = new Nr(t, e, n);\n        this.setItem(s, i.aa());\n    }\n    ja() {\n        this.setItem(this.ga, \"value-not-used\");\n    }\n    /**\n     * Parses a client state key in WebStorage. Returns null if the key does not\n     * match the expected key format.\n     */    Ga(t) {\n        const e = this.Aa.exec(t);\n        return e ? e[1] : null;\n    }\n    /**\n     * Parses a client state in WebStorage. Returns 'null' if the value could not\n     * be parsed.\n     */    Ha(t, e) {\n        const n = this.Ga(t);\n        return Fr.ca(n, e);\n    }\n    /**\n     * Parses a mutation batch state in WebStorage. Returns 'null' if the value\n     * could not be parsed.\n     */    Ja(t, e) {\n        const n = this.Ra.exec(t), s = Number(n[1]), i = void 0 !== n[2] ? n[2] : null;\n        return xr.ca(new M(i), s, e);\n    }\n    /**\n     * Parses a query target state from WebStorage. Returns 'null' if the value\n     * could not be parsed.\n     */    Xa(t, e) {\n        const n = this.Pa.exec(t), s = Number(n[1]);\n        return Nr.ca(s, e);\n    }\n    /**\n     * Parses an online state from WebStorage. Returns 'null' if the value\n     * could not be parsed.\n     */    pa(t) {\n        return Or.ca(t);\n    }\n    async Ya(t) {\n        if (t.user.uid === this.currentUser.uid) return this._a.eu(t.batchId, t.state, t.error);\n        R(\"SharedClientState\", \"Ignoring mutation for non-active user \" + t.user.uid);\n    }\n    Za(t) {\n        return this._a.nu(t.targetId, t.state, t.error);\n    }\n    za(t, e) {\n        const n = e ? this.Ea.zt(t, e) : this.Ea.remove(t), s = this.Sa(this.Ea), i = this.Sa(n), r = [], o = [];\n        return i.forEach((t => {\n            s.has(t) || r.push(t);\n        })), s.forEach((t => {\n            i.has(t) || o.push(t);\n        })), this._a.su(r, o).then((() => {\n            this.Ea = n;\n        }));\n    }\n    ba(t) {\n        // We check whether the client that wrote this online state is still active\n        // by comparing its client ID to the list of clients kept active in\n        // IndexedDb. If a client does not update their IndexedDb client state\n        // within 5 seconds, it is considered inactive and we don't emit an online\n        // state event.\n        this.Ea.get(t.clientId) && this.fa(t.onlineState);\n    }\n    Sa(t) {\n        let e = In();\n        return t.forEach(((t, n) => {\n            e = e.Pe(n.activeTargetIds);\n        })), e;\n    }\n}\n\nclass Lr {\n    constructor() {\n        this.iu = new kr, this.ru = {}, this.fa = null, this.M = null;\n    }\n    Ca(t) {\n        // No op.\n    }\n    Na(t, e, n) {\n        // No op.\n    }\n    Oa(t) {\n        return this.iu.ua(t), this.ru[t] || \"not-current\";\n    }\n    Ba(t, e, n) {\n        this.ru[t] = e;\n    }\n    Ma(t) {\n        this.iu.ha(t);\n    }\n    La(t) {\n        return this.iu.activeTargetIds.has(t);\n    }\n    $a(t) {\n        delete this.ru[t];\n    }\n    va() {\n        return this.iu.activeTargetIds;\n    }\n    Da(t) {\n        return this.iu.activeTargetIds.has(t);\n    }\n    start() {\n        return this.iu = new kr, Promise.resolve();\n    }\n    Ua(t, e, n) {\n        // No op.\n    }\n    Qa(t) {\n        // No op.\n    }\n    Mo() {}\n    B(t) {}\n    Wa() {\n        // No op.\n    }\n}\n\n/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ class $r {\n    ou(t) {\n        // No-op.\n    }\n    Mo() {\n        // No-op.\n    }\n}\n\n/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n// References to `window` are guarded by BrowserConnectivityMonitor.isAvailable()\n/* eslint-disable no-restricted-globals */\n/**\n * Browser implementation of ConnectivityMonitor.\n */\nclass Br {\n    constructor() {\n        this.cu = () => this.au(), this.uu = () => this.hu(), this.lu = [], this._u();\n    }\n    ou(t) {\n        this.lu.push(t);\n    }\n    Mo() {\n        window.removeEventListener(\"online\", this.cu), window.removeEventListener(\"offline\", this.uu);\n    }\n    _u() {\n        window.addEventListener(\"online\", this.cu), window.addEventListener(\"offline\", this.uu);\n    }\n    au() {\n        R(\"ConnectivityMonitor\", \"Network connectivity changed: AVAILABLE\");\n        for (const t of this.lu) t(0 /* AVAILABLE */);\n    }\n    hu() {\n        R(\"ConnectivityMonitor\", \"Network connectivity changed: UNAVAILABLE\");\n        for (const t of this.lu) t(1 /* UNAVAILABLE */);\n    }\n    // TODO(chenbrian): Consider passing in window either into this component or\n    // here for testing via FakeWindow.\n    /** Checks that all used attributes of window are available. */\n    static Kn() {\n        return \"undefined\" != typeof window && void 0 !== window.addEventListener && void 0 !== window.removeEventListener;\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ const qr = {\n    BatchGetDocuments: \"batchGet\",\n    Commit: \"commit\",\n    RunQuery: \"runQuery\"\n};\n\n/**\n * Maps RPC names to the corresponding REST endpoint name.\n *\n * We use array notation to avoid mangling.\n */\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Provides a simple helper class that implements the Stream interface to\n * bridge to other implementations that are streams but do not implement the\n * interface. The stream callbacks are invoked with the callOn... methods.\n */\nclass Ur {\n    constructor(t) {\n        this.fu = t.fu, this.du = t.du;\n    }\n    wu(t) {\n        this.Eu = t;\n    }\n    Tu(t) {\n        this.Iu = t;\n    }\n    onMessage(t) {\n        this.mu = t;\n    }\n    close() {\n        this.du();\n    }\n    send(t) {\n        this.fu(t);\n    }\n    Au() {\n        this.Eu();\n    }\n    Ru(t) {\n        this.Iu(t);\n    }\n    Pu(t) {\n        this.mu(t);\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ class Qr extends \n/**\n * Base class for all Rest-based connections to the backend (WebChannel and\n * HTTP).\n */\nclass {\n    constructor(t) {\n        this.yu = t, this.t = t.t;\n        const e = t.ssl ? \"https\" : \"http\";\n        this.gu = e + \"://\" + t.host, this.Vu = \"projects/\" + this.t.projectId + \"/databases/\" + this.t.database + \"/documents\";\n    }\n    pu(t, e, n, s) {\n        const i = this.bu(t, e);\n        R(\"RestConnection\", \"Sending: \", i, n);\n        const r = {};\n        return this.vu(r, s), this.Su(t, i, r, n).then((t => (R(\"RestConnection\", \"Received: \", t), \n        t)), (e => {\n            throw y(\"RestConnection\", t + \" failed with error: \", e, \"url: \", i, \"request:\", n), \n            e;\n        }));\n    }\n    Du(t, e, n, s) {\n        // The REST API automatically aggregates all of the streamed results, so we\n        // can just use the normal invoke() method.\n        return this.pu(t, e, n, s);\n    }\n    /**\n     * Modifies the headers for a request, adding any authorization token if\n     * present and any additional headers for the request.\n     */    vu(t, e) {\n        if (t[\"X-Goog-Api-Client\"] = \"gl-js/ fire/8.2.6\", \n        // Content-Type: text/plain will avoid preflight requests which might\n        // mess with CORS and redirects by proxies. If we add custom headers\n        // we will need to change this code to potentially use the $httpOverwrite\n        // parameter supported by ESF to avoid triggering preflight requests.\n        t[\"Content-Type\"] = \"text/plain\", e) for (const n in e.g) e.g.hasOwnProperty(n) && (t[n] = e.g[n]);\n    }\n    bu(t, e) {\n        const n = qr[t];\n        return `${this.gu}/v1/${e}:${n}`;\n    }\n} {\n    constructor(t) {\n        super(t), this.forceLongPolling = t.forceLongPolling, this.i = t.i;\n    }\n    Su(t, e, n, s) {\n        return new Promise(((i, r) => {\n            const o = new u;\n            o.listenOnce(h.COMPLETE, (() => {\n                try {\n                    switch (o.getLastErrorCode()) {\n                      case l.NO_ERROR:\n                        const e = o.getResponseJson();\n                        R(\"Connection\", \"XHR received:\", JSON.stringify(e)), i(e);\n                        break;\n\n                      case l.TIMEOUT:\n                        R(\"Connection\", 'RPC \"' + t + '\" timed out'), r(new O(F.DEADLINE_EXCEEDED, \"Request time out\"));\n                        break;\n\n                      case l.HTTP_ERROR:\n                        const n = o.getStatus();\n                        if (R(\"Connection\", 'RPC \"' + t + '\" failed with status:', n, \"response text:\", o.getResponseText()), \n                        n > 0) {\n                            const t = o.getResponseJson().error;\n                            if (t && t.status && t.message) {\n                                const e = function(t) {\n                                    const e = t.toLowerCase().replace(/_/g, \"-\");\n                                    return Object.values(F).indexOf(e) >= 0 ? e : F.UNKNOWN;\n                                }(t.status);\n                                r(new O(e, t.message));\n                            } else r(new O(F.UNKNOWN, \"Server responded with status \" + o.getStatus()));\n                        } else \n                        // If we received an HTTP_ERROR but there's no status code,\n                        // it's most probably a connection issue\n                        r(new O(F.UNAVAILABLE, \"Connection failed.\"));\n                        break;\n\n                      default:\n                        V();\n                    }\n                } finally {\n                    R(\"Connection\", 'RPC \"' + t + '\" completed.');\n                }\n            }));\n            const c = JSON.stringify(s);\n            o.send(e, \"POST\", c, n, 15);\n        }));\n    }\n    Cu(t, e) {\n        const n = [ this.gu, \"/\", \"google.firestore.v1.Firestore\", \"/\", t, \"/channel\" ], u = _(), h = f(), l = {\n            // Required for backend stickiness, routing behavior is based on this\n            // parameter.\n            httpSessionIdParam: \"gsessionid\",\n            initMessageHeaders: {},\n            messageUrlParams: {\n                // This param is used to improve routing and project isolation by the\n                // backend and must be included in every request.\n                database: `projects/${this.t.projectId}/databases/${this.t.database}`\n            },\n            sendRawJson: !0,\n            supportsCrossDomainXhr: !0,\n            internalChannelParams: {\n                // Override the default timeout (randomized between 10-20 seconds) since\n                // a large write batch on a slow internet connection may take a long\n                // time to send to the backend. Rather than have WebChannel impose a\n                // tight timeout which could lead to infinite timeouts and retries, we\n                // set it very large (5-10 minutes) and rely on the browser's builtin\n                // timeouts to kick in if the request isn't working.\n                forwardChannelRequestTimeoutMs: 6e5\n            },\n            forceLongPolling: this.forceLongPolling,\n            detectBufferingProxy: this.i\n        };\n        this.vu(l.initMessageHeaders, e), \n        // Sending the custom headers we just added to request.initMessageHeaders\n        // (Authorization, etc.) will trigger the browser to make a CORS preflight\n        // request because the XHR will no longer meet the criteria for a \"simple\"\n        // CORS request:\n        // https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#Simple_requests\n        // Therefore to avoid the CORS preflight request (an extra network\n        // roundtrip), we use the httpHeadersOverwriteParam option to specify that\n        // the headers should instead be encoded into a special \"$httpHeaders\" query\n        // parameter, which is recognized by the webchannel backend. This is\n        // formally defined here:\n        // https://github.com/google/closure-library/blob/b0e1815b13fb92a46d7c9b3c30de5d6a396a3245/closure/goog/net/rpc/httpcors.js#L32\n        // TODO(b/145624756): There is a backend bug where $httpHeaders isn't respected if the request\n        // doesn't have an Origin header. So we have to exclude a few browser environments that are\n        // known to (sometimes) not include an Origin. See\n        // https://github.com/firebase/firebase-js-sdk/issues/1491.\n        s() || i() || r() || o() || c() || a() || (l.httpHeadersOverwriteParam = \"$httpHeaders\");\n        const T = n.join(\"\");\n        R(\"Connection\", \"Creating WebChannel: \" + T, l);\n        const I = u.createWebChannel(T, l);\n        // WebChannel supports sending the first message with the handshake - saving\n        // a network round trip. However, it will have to call send in the same\n        // JS event loop as open. In order to enforce this, we delay actually\n        // opening the WebChannel until send is called. Whether we have called\n        // open is tracked with this variable.\n                let m = !1, A = !1;\n        // A flag to determine whether the stream was closed (by us or through an\n        // error/close event) to avoid delivering multiple close events or sending\n        // on a closed stream\n                const P = new Ur({\n            fu: t => {\n                A ? R(\"Connection\", \"Not sending because WebChannel is closed:\", t) : (m || (R(\"Connection\", \"Opening WebChannel transport.\"), \n                I.open(), m = !0), R(\"Connection\", \"WebChannel sending:\", t), I.send(t));\n            },\n            du: () => I.close()\n        }), g = (t, e, n) => {\n            // TODO(dimond): closure typing seems broken because WebChannel does\n            // not implement goog.events.Listenable\n            t.listen(e, (t => {\n                try {\n                    n(t);\n                } catch (t) {\n                    setTimeout((() => {\n                        throw t;\n                    }), 0);\n                }\n            }));\n        };\n        // Closure events are guarded and exceptions are swallowed, so catch any\n        // exception and rethrow using a setTimeout so they become visible again.\n        // Note that eventually this function could go away if we are confident\n        // enough the code is exception free.\n                return g(I, d.EventType.OPEN, (() => {\n            A || R(\"Connection\", \"WebChannel transport opened.\");\n        })), g(I, d.EventType.CLOSE, (() => {\n            A || (A = !0, R(\"Connection\", \"WebChannel transport closed\"), P.Ru());\n        })), g(I, d.EventType.ERROR, (t => {\n            A || (A = !0, y(\"Connection\", \"WebChannel transport errored:\", t), P.Ru(new O(F.UNAVAILABLE, \"The operation could not be completed\")));\n        })), g(I, d.EventType.MESSAGE, (t => {\n            var e;\n            if (!A) {\n                const n = t.data[0];\n                p(!!n);\n                // TODO(b/35143891): There is a bug in One Platform that caused errors\n                // (and only errors) to be wrapped in an extra array. To be forward\n                // compatible with the bug we need to check either condition. The latter\n                // can be removed once the fix has been rolled out.\n                // Use any because msgData.error is not typed.\n                const s = n, i = s.error || (null === (e = s[0]) || void 0 === e ? void 0 : e.error);\n                if (i) {\n                    R(\"Connection\", \"WebChannel received error:\", i);\n                    // error.status will be a string like 'OK' or 'NOT_FOUND'.\n                    const t = i.status;\n                    let e = \n                    /**\n * Maps an error Code from a GRPC status identifier like 'NOT_FOUND'.\n *\n * @returns The Code equivalent to the given status string or undefined if\n *     there is no match.\n */\n                    function(t) {\n                        // lookup by string\n                        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                        const e = Xe[t];\n                        if (void 0 !== e) return en(e);\n                    }(t), n = i.message;\n                    void 0 === e && (e = F.INTERNAL, n = \"Unknown error status: \" + t + \" with message \" + i.message), \n                    // Mark closed so no further events are propagated\n                    A = !0, P.Ru(new O(e, n)), I.close();\n                } else R(\"Connection\", \"WebChannel received:\", n), P.Pu(n);\n            }\n        })), g(h, w.STAT_EVENT, (t => {\n            t.stat === E.PROXY ? R(\"Connection\", \"Detected buffering proxy\") : t.stat === E.NOPROXY && R(\"Connection\", \"Detected no buffering proxy\");\n        })), setTimeout((() => {\n            // Technically we could/should wait for the WebChannel opened event,\n            // but because we want to send the first message with the WebChannel\n            // handshake we pretend the channel opened here (asynchronously), and\n            // then delay the actual open until the first message is sent.\n            P.Au();\n        }), 0), P;\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/** Initializes the WebChannelConnection for the browser. */\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/** The Platform's 'window' implementation or null if not available. */\nfunction Kr() {\n    // `window` is not always available, e.g. in ReactNative and WebWorkers.\n    // eslint-disable-next-line no-restricted-globals\n    return \"undefined\" != typeof window ? window : null;\n}\n\n/** The Platform's 'document' implementation or null if not available. */ function Wr() {\n    // `document` is not always available, e.g. in ReactNative and WebWorkers.\n    // eslint-disable-next-line no-restricted-globals\n    return \"undefined\" != typeof document ? document : null;\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ function jr(t) {\n    return new Nn(t, /* useProto3Json= */ !0);\n}\n\n/**\n * An instance of the Platform's 'TextEncoder' implementation.\n */\n/**\n * A helper for running delayed tasks following an exponential backoff curve\n * between attempts.\n *\n * Each delay is made up of a \"base\" delay which follows the exponential\n * backoff curve, and a +/- 50% \"jitter\" that is calculated and added to the\n * base delay. This prevents clients from accidentally synchronizing their\n * delays causing spikes of load to the backend.\n */\nclass Gr {\n    constructor(\n    /**\n     * The AsyncQueue to run backoff operations on.\n     */\n    t, \n    /**\n     * The ID to use when scheduling backoff operations on the AsyncQueue.\n     */\n    e, \n    /**\n     * The initial delay (used as the base delay on the first retry attempt).\n     * Note that jitter will still be applied, so the actual delay could be as\n     * little as 0.5*initialDelayMs.\n     */\n    n = 1e3\n    /**\n     * The multiplier to use to determine the extended base delay after each\n     * attempt.\n     */ , s = 1.5\n    /**\n     * The maximum base delay after which no further backoff is performed.\n     * Note that jitter will still be applied, so the actual delay could be as\n     * much as 1.5*maxDelayMs.\n     */ , i = 6e4) {\n        this.Zr = t, this.fs = e, this.xu = n, this.Nu = s, this.Fu = i, this.Ou = 0, this.ku = null, \n        /** The last backoff attempt, as epoch milliseconds. */\n        this.Mu = Date.now(), this.reset();\n    }\n    /**\n     * Resets the backoff delay.\n     *\n     * The very next backoffAndWait() will have no delay. If it is called again\n     * (i.e. due to an error), initialDelayMs (plus jitter) will be used, and\n     * subsequent ones will increase according to the backoffFactor.\n     */    reset() {\n        this.Ou = 0;\n    }\n    /**\n     * Resets the backoff delay to the maximum delay (e.g. for use after a\n     * RESOURCE_EXHAUSTED error).\n     */    Lu() {\n        this.Ou = this.Fu;\n    }\n    /**\n     * Returns a promise that resolves after currentDelayMs, and increases the\n     * delay for any subsequent attempts. If there was a pending backoff operation\n     * already, it will be canceled.\n     */    $u(t) {\n        // Cancel any pending backoff operation.\n        this.cancel();\n        // First schedule using the current base (which may be 0 and should be\n        // honored as such).\n        const e = Math.floor(this.Ou + this.Bu()), n = Math.max(0, Date.now() - this.Mu), s = Math.max(0, e - n);\n        // Guard against lastAttemptTime being in the future due to a clock change.\n                s > 0 && R(\"ExponentialBackoff\", `Backing off for ${s} ms (base delay: ${this.Ou} ms, delay with jitter: ${e} ms, last attempt: ${n} ms ago)`), \n        this.ku = this.Zr.Tr(this.fs, s, (() => (this.Mu = Date.now(), t()))), \n        // Apply backoff factor to determine next delay and ensure it is within\n        // bounds.\n        this.Ou *= this.Nu, this.Ou < this.xu && (this.Ou = this.xu), this.Ou > this.Fu && (this.Ou = this.Fu);\n    }\n    qu() {\n        null !== this.ku && (this.ku.Rs(), this.ku = null);\n    }\n    cancel() {\n        null !== this.ku && (this.ku.cancel(), this.ku = null);\n    }\n    /** Returns a random value in the range [-currentBaseMs/2, currentBaseMs/2] */    Bu() {\n        return (Math.random() - .5) * this.Ou;\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * A PersistentStream is an abstract base class that represents a streaming RPC\n * to the Firestore backend. It's built on top of the connections own support\n * for streaming RPCs, and adds several critical features for our clients:\n *\n *   - Exponential backoff on failure\n *   - Authentication via CredentialsProvider\n *   - Dispatching all callbacks into the shared worker queue\n *   - Closing idle streams after 60 seconds of inactivity\n *\n * Subclasses of PersistentStream implement serialization of models to and\n * from the JSON representation of the protocol buffers for a specific\n * streaming RPC.\n *\n * ## Starting and Stopping\n *\n * Streaming RPCs are stateful and need to be start()ed before messages can\n * be sent and received. The PersistentStream will call the onOpen() function\n * of the listener once the stream is ready to accept requests.\n *\n * Should a start() fail, PersistentStream will call the registered onClose()\n * listener with a FirestoreError indicating what went wrong.\n *\n * A PersistentStream can be started and stopped repeatedly.\n *\n * Generic types:\n *  SendType: The type of the outgoing message of the underlying\n *    connection stream\n *  ReceiveType: The type of the incoming message of the underlying\n *    connection stream\n *  ListenerType: The type of the listener that will be used for callbacks\n */\nclass zr {\n    constructor(t, e, n, s, i, r) {\n        this.Zr = t, this.Uu = n, this.Qu = s, this.Ku = i, this.listener = r, this.state = 0 /* Initial */ , \n        /**\n         * A close count that's incremented every time the stream is closed; used by\n         * getCloseGuardedDispatcher() to invalidate callbacks that happen after\n         * close.\n         */\n        this.Wu = 0, this.ju = null, this.stream = null, this.Gu = new Gr(t, e);\n    }\n    /**\n     * Returns true if start() has been called and no error has occurred. True\n     * indicates the stream is open or in the process of opening (which\n     * encompasses respecting backoff, getting auth tokens, and starting the\n     * actual RPC). Use isOpen() to determine if the stream is open and ready for\n     * outbound requests.\n     */    zu() {\n        return 1 /* Starting */ === this.state || 2 /* Open */ === this.state || 4 /* Backoff */ === this.state;\n    }\n    /**\n     * Returns true if the underlying RPC is open (the onOpen() listener has been\n     * called) and the stream is ready for outbound requests.\n     */    Hu() {\n        return 2 /* Open */ === this.state;\n    }\n    /**\n     * Starts the RPC. Only allowed if isStarted() returns false. The stream is\n     * not immediately ready for use: onOpen() will be invoked when the RPC is\n     * ready for outbound requests, at which point isOpen() will return true.\n     *\n     * When start returns, isStarted() will return true.\n     */    start() {\n        3 /* Error */ !== this.state ? this.auth() : this.Ju();\n    }\n    /**\n     * Stops the RPC. This call is idempotent and allowed regardless of the\n     * current isStarted() state.\n     *\n     * When stop returns, isStarted() and isOpen() will both return false.\n     */    async stop() {\n        this.zu() && await this.close(0 /* Initial */);\n    }\n    /**\n     * After an error the stream will usually back off on the next attempt to\n     * start it. If the error warrants an immediate restart of the stream, the\n     * sender can use this to indicate that the receiver should not back off.\n     *\n     * Each error will call the onClose() listener. That function can decide to\n     * inhibit backoff if required.\n     */    Yu() {\n        this.state = 0 /* Initial */ , this.Gu.reset();\n    }\n    /**\n     * Marks this stream as idle. If no further actions are performed on the\n     * stream for one minute, the stream will automatically close itself and\n     * notify the stream's onClose() handler with Status.OK. The stream will then\n     * be in a !isStarted() state, requiring the caller to start the stream again\n     * before further use.\n     *\n     * Only streams that are in state 'Open' can be marked idle, as all other\n     * states imply pending network operations.\n     */    Xu() {\n        // Starts the idle time if we are in state 'Open' and are not yet already\n        // running a timer (in which case the previous idle timeout still applies).\n        this.Hu() && null === this.ju && (this.ju = this.Zr.Tr(this.Uu, 6e4, (() => this.Zu())));\n    }\n    /** Sends a message to the underlying stream. */    th(t) {\n        this.eh(), this.stream.send(t);\n    }\n    /** Called by the idle timer when the stream should close due to inactivity. */    async Zu() {\n        if (this.Hu()) \n        // When timing out an idle stream there's no reason to force the stream into backoff when\n        // it restarts so set the stream state to Initial instead of Error.\n        return this.close(0 /* Initial */);\n    }\n    /** Marks the stream as active again. */    eh() {\n        this.ju && (this.ju.cancel(), this.ju = null);\n    }\n    /**\n     * Closes the stream and cleans up as necessary:\n     *\n     * * closes the underlying GRPC stream;\n     * * calls the onClose handler with the given 'error';\n     * * sets internal stream state to 'finalState';\n     * * adjusts the backoff timer based on the error\n     *\n     * A new stream can be opened by calling start().\n     *\n     * @param finalState - the intended state of the stream after closing.\n     * @param error - the error the connection was closed with.\n     */    async close(t, e) {\n        // Cancel any outstanding timers (they're guaranteed not to execute).\n        this.eh(), this.Gu.cancel(), \n        // Invalidates any stream-related callbacks (e.g. from auth or the\n        // underlying stream), guaranteeing they won't execute.\n        this.Wu++, 3 /* Error */ !== t ? \n        // If this is an intentional close ensure we don't delay our next connection attempt.\n        this.Gu.reset() : e && e.code === F.RESOURCE_EXHAUSTED ? (\n        // Log the error. (Probably either 'quota exceeded' or 'max queue length reached'.)\n        P(e.toString()), P(\"Using maximum backoff delay to prevent overloading the backend.\"), \n        this.Gu.Lu()) : e && e.code === F.UNAUTHENTICATED && \n        // \"unauthenticated\" error means the token was rejected. Try force refreshing it in case it\n        // just expired.\n        this.Ku.p(), \n        // Clean up the underlying stream because we are no longer interested in events.\n        null !== this.stream && (this.nh(), this.stream.close(), this.stream = null), \n        // This state must be assigned before calling onClose() to allow the callback to\n        // inhibit backoff or otherwise manipulate the state in its non-started state.\n        this.state = t, \n        // Notify the listener that the stream closed.\n        await this.listener.Tu(e);\n    }\n    /**\n     * Can be overridden to perform additional cleanup before the stream is closed.\n     * Calling super.tearDown() is not required.\n     */    nh() {}\n    auth() {\n        this.state = 1 /* Starting */;\n        const t = this.sh(this.Wu), e = this.Wu;\n        // TODO(mikelehen): Just use dispatchIfNotClosed, but see TODO below.\n                this.Ku.getToken().then((t => {\n            // Stream can be stopped while waiting for authentication.\n            // TODO(mikelehen): We really should just use dispatchIfNotClosed\n            // and let this dispatch onto the queue, but that opened a spec test can\n            // of worms that I don't want to deal with in this PR.\n            this.Wu === e && \n            // Normally we'd have to schedule the callback on the AsyncQueue.\n            // However, the following calls are safe to be called outside the\n            // AsyncQueue since they don't chain asynchronous calls\n            this.ih(t);\n        }), (e => {\n            t((() => {\n                const t = new O(F.UNKNOWN, \"Fetching auth token failed: \" + e.message);\n                return this.rh(t);\n            }));\n        }));\n    }\n    ih(t) {\n        const e = this.sh(this.Wu);\n        this.stream = this.oh(t), this.stream.wu((() => {\n            e((() => (this.state = 2 /* Open */ , this.listener.wu())));\n        })), this.stream.Tu((t => {\n            e((() => this.rh(t)));\n        })), this.stream.onMessage((t => {\n            e((() => this.onMessage(t)));\n        }));\n    }\n    Ju() {\n        this.state = 4 /* Backoff */ , this.Gu.$u((async () => {\n            this.state = 0 /* Initial */ , this.start();\n        }));\n    }\n    // Visible for tests\n    rh(t) {\n        // In theory the stream could close cleanly, however, in our current model\n        // we never expect this to happen because if we stop a stream ourselves,\n        // this callback will never be called. To prevent cases where we retry\n        // without a backoff accidentally, we set the stream to error in all cases.\n        return R(\"PersistentStream\", \"close with error: \" + t), this.stream = null, this.close(3 /* Error */ , t);\n    }\n    /**\n     * Returns a \"dispatcher\" function that dispatches operations onto the\n     * AsyncQueue but only runs them if closeCount remains unchanged. This allows\n     * us to turn auth / stream callbacks into no-ops if the stream is closed /\n     * re-opened, etc.\n     */    sh(t) {\n        return e => {\n            this.Zr.Ps((() => this.Wu === t ? e() : (R(\"PersistentStream\", \"stream callback skipped by getCloseGuardedDispatcher.\"), \n            Promise.resolve())));\n        };\n    }\n}\n\n/**\n * A PersistentStream that implements the Listen RPC.\n *\n * Once the Listen stream has called the onOpen() listener, any number of\n * listen() and unlisten() calls can be made to control what changes will be\n * sent from the server for ListenResponses.\n */ class Hr extends zr {\n    constructor(t, e, n, s, i) {\n        super(t, \"listen_stream_connection_backoff\" /* ListenStreamConnectionBackoff */ , \"listen_stream_idle\" /* ListenStreamIdle */ , e, n, i), \n        this.Qt = s;\n    }\n    oh(t) {\n        return this.Qu.Cu(\"Listen\", t);\n    }\n    onMessage(t) {\n        // A successful response means the stream is healthy\n        this.Gu.reset();\n        const e = Hn(this.Qt, t), n = function(t) {\n            // We have only reached a consistent snapshot for the entire stream if there\n            // is a read_time set and it applies to all targets (i.e. the list of\n            // targets is empty). The backend is guaranteed to send such responses.\n            if (!(\"targetChange\" in t)) return W.min();\n            const e = t.targetChange;\n            return e.targetIds && e.targetIds.length ? W.min() : e.readTime ? Mn(e.readTime) : W.min();\n        }(t);\n        return this.listener.ah(e, n);\n    }\n    /**\n     * Registers interest in the results of the given target. If the target\n     * includes a resumeToken it will be included in the request. Results that\n     * affect the target will be streamed back as WatchChange messages that\n     * reference the targetId.\n     */    uh(t) {\n        const e = {};\n        e.database = Kn(this.Qt), e.addTarget = function(t, e) {\n            let n;\n            const s = e.target;\n            return n = kt(s) ? {\n                documents: Zn(t, s)\n            } : {\n                query: ts(t, s)\n            }, n.targetId = e.targetId, e.resumeToken.l() > 0 ? n.resumeToken = On(t, e.resumeToken) : e.kt._(W.min()) > 0 && (\n            // TODO(wuandy): Consider removing above check because it is most likely true.\n            // Right now, many tests depend on this behaviour though (leaving min() out\n            // of serialization).\n            n.readTime = Fn(t, e.kt.j())), n;\n        }(this.Qt, t);\n        const n = ns(this.Qt, t);\n        n && (e.labels = n), this.th(e);\n    }\n    /**\n     * Unregisters interest in the results of the target associated with the\n     * given targetId.\n     */    hh(t) {\n        const e = {};\n        e.database = Kn(this.Qt), e.removeTarget = t, this.th(e);\n    }\n}\n\n/**\n * A Stream that implements the Write RPC.\n *\n * The Write RPC requires the caller to maintain special streamToken\n * state in between calls, to help the server understand which responses the\n * client has processed by the time the next request is made. Every response\n * will contain a streamToken; this value must be passed to the next\n * request.\n *\n * After calling start() on this stream, the next request must be a handshake,\n * containing whatever streamToken is on hand. Once a response to this\n * request is received, all pending mutations may be submitted. When\n * submitting multiple batches of mutations at the same time, it's\n * okay to use the same streamToken for the calls to writeMutations.\n *\n * TODO(b/33271235): Use proto types\n */ class Jr extends zr {\n    constructor(t, e, n, s, i) {\n        super(t, \"write_stream_connection_backoff\" /* WriteStreamConnectionBackoff */ , \"write_stream_idle\" /* WriteStreamIdle */ , e, n, i), \n        this.Qt = s, this.lh = !1;\n    }\n    /**\n     * Tracks whether or not a handshake has been successfully exchanged and\n     * the stream is ready to accept mutations.\n     */    get _h() {\n        return this.lh;\n    }\n    // Override of PersistentStream.start\n    start() {\n        this.lh = !1, this.lastStreamToken = void 0, super.start();\n    }\n    nh() {\n        this.lh && this.fh([]);\n    }\n    oh(t) {\n        return this.Qu.Cu(\"Write\", t);\n    }\n    onMessage(t) {\n        if (\n        // Always capture the last stream token.\n        p(!!t.streamToken), this.lastStreamToken = t.streamToken, this.lh) {\n            // A successful first write response means the stream is healthy,\n            // Note, that we could consider a successful handshake healthy, however,\n            // the write itself might be causing an error we want to back off from.\n            this.Gu.reset();\n            const e = Xn(t.writeResults, t.commitTime), n = Mn(t.commitTime);\n            return this.listener.dh(n, e);\n        }\n        // The first response is always the handshake response\n        return p(!t.writeResults || 0 === t.writeResults.length), this.lh = !0, this.listener.wh();\n    }\n    /**\n     * Sends an initial streamToken to the server, performing the handshake\n     * required to make the StreamingWrite RPC work. Subsequent\n     * calls should wait until onHandshakeComplete was called.\n     */    Eh() {\n        // TODO(dimond): Support stream resumption. We intentionally do not set the\n        // stream token on the handshake, ignoring any stream token we might have.\n        const t = {};\n        t.database = Kn(this.Qt), this.th(t);\n    }\n    /** Sends a group of mutations to the Firestore backend to apply. */    fh(t) {\n        const e = {\n            streamToken: this.lastStreamToken,\n            writes: t.map((t => Jn(this.Qt, t)))\n        };\n        this.th(e);\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Datastore and its related methods are a wrapper around the external Google\n * Cloud Datastore grpc API, which provides an interface that is more convenient\n * for the rest of the client SDK architecture to consume.\n */\n/**\n * An implementation of Datastore that exposes additional state for internal\n * consumption.\n */\nclass Yr extends class {} {\n    constructor(t, e, n) {\n        super(), this.credentials = t, this.Qu = e, this.Qt = n, this.Th = !1;\n    }\n    Ih() {\n        if (this.Th) throw new O(F.FAILED_PRECONDITION, \"The client has already been terminated.\");\n    }\n    /** Gets an auth token and invokes the provided RPC. */    pu(t, e, n) {\n        return this.Ih(), this.credentials.getToken().then((s => this.Qu.pu(t, e, n, s))).catch((t => {\n            throw t.code === F.UNAUTHENTICATED && this.credentials.p(), t;\n        }));\n    }\n    /** Gets an auth token and invokes the provided RPC with streamed results. */    Du(t, e, n) {\n        return this.Ih(), this.credentials.getToken().then((s => this.Qu.Du(t, e, n, s))).catch((t => {\n            throw t.code === F.UNAUTHENTICATED && this.credentials.p(), t;\n        }));\n    }\n    terminate() {\n        this.Th = !1;\n    }\n}\n\n// TODO(firestorexp): Make sure there is only one Datastore instance per\n// firestore-exp client.\n/**\n * A component used by the RemoteStore to track the OnlineState (that is,\n * whether or not the client as a whole should be considered to be online or\n * offline), implementing the appropriate heuristics.\n *\n * In particular, when the client is trying to connect to the backend, we\n * allow up to MAX_WATCH_STREAM_FAILURES within ONLINE_STATE_TIMEOUT_MS for\n * a connection to succeed. If we have too many failures or the timeout elapses,\n * then we set the OnlineState to Offline, and the client will behave as if\n * it is offline (get()s will return cached data, etc.).\n */\nclass Xr {\n    constructor(t, e) {\n        this._s = t, this.fa = e, \n        /** The current OnlineState. */\n        this.state = \"Unknown\" /* Unknown */ , \n        /**\n         * A count of consecutive failures to open the stream. If it reaches the\n         * maximum defined by MAX_WATCH_STREAM_FAILURES, we'll set the OnlineState to\n         * Offline.\n         */\n        this.mh = 0, \n        /**\n         * A timer that elapses after ONLINE_STATE_TIMEOUT_MS, at which point we\n         * transition from OnlineState.Unknown to OnlineState.Offline without waiting\n         * for the stream to actually fail (MAX_WATCH_STREAM_FAILURES times).\n         */\n        this.Ah = null, \n        /**\n         * Whether the client should log a warning message if it fails to connect to\n         * the backend (initially true, cleared after a successful stream, or if we've\n         * logged the message already).\n         */\n        this.Rh = !0;\n    }\n    /**\n     * Called by RemoteStore when a watch stream is started (including on each\n     * backoff attempt).\n     *\n     * If this is the first attempt, it sets the OnlineState to Unknown and starts\n     * the onlineStateTimer.\n     */    Ph() {\n        0 === this.mh && (this.yh(\"Unknown\" /* Unknown */), this.Ah = this._s.Tr(\"online_state_timeout\" /* OnlineStateTimeout */ , 1e4, (() => (this.Ah = null, \n        this.gh(\"Backend didn't respond within 10 seconds.\"), this.yh(\"Offline\" /* Offline */), \n        Promise.resolve()))));\n    }\n    /**\n     * Updates our OnlineState as appropriate after the watch stream reports a\n     * failure. The first failure moves us to the 'Unknown' state. We then may\n     * allow multiple failures (based on MAX_WATCH_STREAM_FAILURES) before we\n     * actually transition to the 'Offline' state.\n     */    Vh(t) {\n        \"Online\" /* Online */ === this.state ? this.yh(\"Unknown\" /* Unknown */) : (this.mh++, \n        this.mh >= 1 && (this.ph(), this.gh(\"Connection failed 1 times. Most recent error: \" + t.toString()), \n        this.yh(\"Offline\" /* Offline */)));\n    }\n    /**\n     * Explicitly sets the OnlineState to the specified state.\n     *\n     * Note that this resets our timers / failure counters, etc. used by our\n     * Offline heuristics, so must not be used in place of\n     * handleWatchStreamStart() and handleWatchStreamFailure().\n     */    set(t) {\n        this.ph(), this.mh = 0, \"Online\" /* Online */ === t && (\n        // We've connected to watch at least once. Don't warn the developer\n        // about being offline going forward.\n        this.Rh = !1), this.yh(t);\n    }\n    yh(t) {\n        t !== this.state && (this.state = t, this.fa(t));\n    }\n    gh(t) {\n        const e = `Could not reach Cloud Firestore backend. ${t}\\nThis typically indicates that your device does not have a healthy Internet connection at the moment. The client will operate in offline mode until it is able to successfully connect to the backend.`;\n        this.Rh ? (P(e), this.Rh = !1) : R(\"OnlineStateTracker\", e);\n    }\n    ph() {\n        null !== this.Ah && (this.Ah.cancel(), this.Ah = null);\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ class Zr {\n    constructor(\n    /**\n     * The local store, used to fill the write pipeline with outbound mutations.\n     */\n    t, \n    /** The client-side proxy for interacting with the backend. */\n    e, n, s, i) {\n        this.bh = t, this.Sh = e, this._s = n, this.Dh = {}, \n        /**\n         * A list of up to MAX_PENDING_WRITES writes that we have fetched from the\n         * LocalStore via fillWritePipeline() and have or will send to the write\n         * stream.\n         *\n         * Whenever writePipeline.length > 0 the RemoteStore will attempt to start or\n         * restart the write stream. When the stream is established the writes in the\n         * pipeline will be sent in order.\n         *\n         * Writes remain in writePipeline until they are acknowledged by the backend\n         * and thus will automatically be re-sent if the stream is interrupted /\n         * restarted before they're acknowledged.\n         *\n         * Write responses from the backend are linked to their originating request\n         * purely based on order, and so we can just shift() writes from the front of\n         * the writePipeline as we receive responses.\n         */\n        this.Ch = [], \n        /**\n         * A mapping of watched targets that the client cares about tracking and the\n         * user has explicitly called a 'listen' for this target.\n         *\n         * These targets may or may not have been sent to or acknowledged by the\n         * server. On re-establishing the listen stream, these targets should be sent\n         * to the server. The targets removed with unlistens are removed eagerly\n         * without waiting for confirmation from the listen stream.\n         */\n        this.xh = new Map, \n        /**\n         * A set of reasons for why the RemoteStore may be offline. If empty, the\n         * RemoteStore may start its network connections.\n         */\n        this.Nh = new Set, \n        /**\n         * Event handlers that get called when the network is disabled or enabled.\n         *\n         * PORTING NOTE: These functions are used on the Web client to create the\n         * underlying streams (to support tree-shakeable streams). On Android and iOS,\n         * the streams are created during construction of RemoteStore.\n         */\n        this.Fh = [], this.Oh = i, this.Oh.ou((t => {\n            n.Ps((async () => {\n                // Porting Note: Unlike iOS, `restartNetwork()` is called even when the\n                // network becomes unreachable as we don't have any other way to tear\n                // down our streams.\n                ao(this) && (R(\"RemoteStore\", \"Restarting streams for network reachability change.\"), \n                await async function(t) {\n                    const e = b(t);\n                    e.Nh.add(4 /* ConnectivityChange */), await eo(e), e.kh.set(\"Unknown\" /* Unknown */), \n                    e.Nh.delete(4 /* ConnectivityChange */), await to(e);\n                }(this));\n            }));\n        })), this.kh = new Xr(n, s);\n    }\n}\n\nasync function to(t) {\n    if (ao(t)) for (const e of t.Fh) await e(/* enabled= */ !0);\n}\n\n/**\n * Temporarily disables the network. The network can be re-enabled using\n * enableNetwork().\n */ async function eo(t) {\n    for (const e of t.Fh) await e(/* enabled= */ !1);\n}\n\n/**\n * Starts new listen for the given target. Uses resume token if provided. It\n * is a no-op if the target of given `TargetData` is already being listened to.\n */\nfunction no(t, e) {\n    const n = b(t);\n    n.xh.has(e.targetId) || (\n    // Mark this as something the client is currently listening for.\n    n.xh.set(e.targetId, e), co(n) ? \n    // The listen will be sent in onWatchStreamOpen\n    oo(n) : po(n).Hu() && io(n, e));\n}\n\n/**\n * Removes the listen from server. It is a no-op if the given target id is\n * not being listened to.\n */ function so(t, e) {\n    const n = b(t), s = po(n);\n    n.xh.delete(e), s.Hu() && ro(n, e), 0 === n.xh.size && (s.Hu() ? s.Xu() : ao(n) && \n    // Revert to OnlineState.Unknown if the watch stream is not open and we\n    // have no listeners, since without any listens to send we cannot\n    // confirm if the stream is healthy and upgrade to OnlineState.Online.\n    n.kh.set(\"Unknown\" /* Unknown */));\n}\n\n/**\n * We need to increment the the expected number of pending responses we're due\n * from watch so we wait for the ack to process any messages from this target.\n */ function io(t, e) {\n    t.Mh.on(e.targetId), po(t).uh(e);\n}\n\n/**\n * We need to increment the expected number of pending responses we're due\n * from watch so we wait for the removal on the server before we process any\n * messages from this target.\n */ function ro(t, e) {\n    t.Mh.on(e), po(t).hh(e);\n}\n\nfunction oo(t) {\n    t.Mh = new vn({\n        vn: e => t.Dh.vn(e),\n        Sn: e => t.xh.get(e) || null\n    }), po(t).start(), t.kh.Ph();\n}\n\n/**\n * Returns whether the watch stream should be started because it's necessary\n * and has not yet been started.\n */ function co(t) {\n    return ao(t) && !po(t).zu() && t.xh.size > 0;\n}\n\nfunction ao(t) {\n    return 0 === b(t).Nh.size;\n}\n\nfunction uo(t) {\n    t.Mh = void 0;\n}\n\nasync function ho(t) {\n    t.xh.forEach(((e, n) => {\n        io(t, e);\n    }));\n}\n\nasync function lo(t, e) {\n    uo(t), \n    // If we still need the watch stream, retry the connection.\n    co(t) ? (t.kh.Vh(e), oo(t)) : \n    // No need to restart watch stream because there are no active targets.\n    // The online state is set to unknown because there is no active attempt\n    // at establishing a connection\n    t.kh.set(\"Unknown\" /* Unknown */);\n}\n\nasync function _o(t, e, n) {\n    if (\n    // Mark the client as online since we got a message from the server\n    t.kh.set(\"Online\" /* Online */), e instanceof pn && 2 /* Removed */ === e.state && e.cause) \n    // There was an error on a target, don't wait for a consistent snapshot\n    // to raise events\n    try {\n        await \n        /** Handles an error on a target */\n        async function(t, e) {\n            const n = e.cause;\n            for (const s of e.targetIds) \n            // A watched target might have been removed already.\n            t.xh.has(s) && (await t.Dh.Lh(s, n), t.xh.delete(s), t.Mh.removeTarget(s));\n        }\n        /**\n * Attempts to fill our write pipeline with writes from the LocalStore.\n *\n * Called internally to bootstrap or refill the write pipeline and by\n * SyncEngine whenever there are new mutations to process.\n *\n * Starts the write stream if necessary.\n */ (t, e);\n    } catch (n) {\n        R(\"RemoteStore\", \"Failed to remove targets %s: %s \", e.targetIds.join(\",\"), n), \n        await fo(t, n);\n    } else if (e instanceof gn ? t.Mh.dn(e) : e instanceof Vn ? t.Mh.Pn(e) : t.Mh.Tn(e), \n    !n.isEqual(W.min())) try {\n        const e = await cr(t.bh);\n        n._(e) >= 0 && \n        // We have received a target change with a global snapshot if the snapshot\n        // version is not equal to SnapshotVersion.min().\n        await \n        /**\n * Takes a batch of changes from the Datastore, repackages them as a\n * RemoteEvent, and passes that on to the listener, which is typically the\n * SyncEngine.\n */\n        function(t, e) {\n            const n = t.Mh.Vn(e);\n            // Update in-memory resume tokens. LocalStore will update the\n            // persistent view of these when applying the completed RemoteEvent.\n                        return n.Fe.forEach(((n, s) => {\n                if (n.resumeToken.l() > 0) {\n                    const i = t.xh.get(s);\n                    // A watched target might have been removed already.\n                                        i && t.xh.set(s, i.Lt(n.resumeToken, e));\n                }\n            })), \n            // Re-establish listens for the targets that have been invalidated by\n            // existence filter mismatches.\n            n.Oe.forEach((e => {\n                const n = t.xh.get(e);\n                if (!n) \n                // A watched target might have been removed already.\n                return;\n                // Clear the resume token for the target, since we're in a known mismatch\n                // state.\n                                t.xh.set(e, n.Lt(N.T, n.kt)), \n                // Cause a hard reset by unwatching and rewatching immediately, but\n                // deliberately don't send a resume token so that we get a full update.\n                ro(t, e);\n                // Mark the target we send as being on behalf of an existence filter\n                // mismatch, but don't actually retain that in listenTargets. This ensures\n                // that we flag the first re-listen this way without impacting future\n                // listens of this target (that might happen e.g. on reconnect).\n                const s = new Ee(n.target, e, 1 /* ExistenceFilterMismatch */ , n.sequenceNumber);\n                io(t, s);\n            })), t.Dh.$h(n);\n        }(t, n);\n    } catch (e) {\n        R(\"RemoteStore\", \"Failed to raise snapshot:\", e), await fo(t, e);\n    }\n}\n\n/**\n * Recovery logic for IndexedDB errors that takes the network offline until\n * `op` succeeds. Retries are scheduled with backoff using\n * `enqueueRetryable()`. If `op()` is not provided, IndexedDB access is\n * validated via a generic operation.\n *\n * The returned Promise is resolved once the network is disabled and before\n * any retry attempt.\n */ async function fo(t, e, n) {\n    if (!As(e)) throw e;\n    t.Nh.add(1 /* IndexedDbFailed */), \n    // Disable network and raise offline snapshots\n    await eo(t), t.kh.set(\"Offline\" /* Offline */), n || (\n    // Use a simple read operation to determine if IndexedDB recovered.\n    // Ideally, we would expose a health check directly on SimpleDb, but\n    // RemoteStore only has access to persistence through LocalStore.\n    n = () => cr(t.bh)), \n    // Probe IndexedDB periodically and re-enable network\n    t._s.po((async () => {\n        R(\"RemoteStore\", \"Retrying IndexedDB access\"), await n(), t.Nh.delete(1 /* IndexedDbFailed */), \n        await to(t);\n    }));\n}\n\n/**\n * Executes `op`. If `op` fails, takes the network offline until `op`\n * succeeds. Returns after the first attempt.\n */ function wo(t, e) {\n    return e().catch((n => fo(t, n, e)));\n}\n\nasync function Eo(t) {\n    const e = b(t), n = bo(e);\n    let s = e.Ch.length > 0 ? e.Ch[e.Ch.length - 1].batchId : -1;\n    for (;To(e); ) try {\n        const t = await hr(e.bh, s);\n        if (null === t) {\n            0 === e.Ch.length && n.Xu();\n            break;\n        }\n        s = t.batchId, Io(e, t);\n    } catch (t) {\n        await fo(e, t);\n    }\n    mo(e) && Ao(e);\n}\n\n/**\n * Returns true if we can add to the write pipeline (i.e. the network is\n * enabled and the write pipeline is not full).\n */ function To(t) {\n    return ao(t) && t.Ch.length < 10;\n}\n\n/**\n * Queues additional writes to be sent to the write stream, sending them\n * immediately if the write stream is established.\n */ function Io(t, e) {\n    t.Ch.push(e);\n    const n = bo(t);\n    n.Hu() && n._h && n.fh(e.mutations);\n}\n\nfunction mo(t) {\n    return ao(t) && !bo(t).zu() && t.Ch.length > 0;\n}\n\nfunction Ao(t) {\n    bo(t).start();\n}\n\nasync function Ro(t) {\n    bo(t).Eh();\n}\n\nasync function Po(t) {\n    const e = bo(t);\n    // Send the write pipeline now that the stream is established.\n        for (const n of t.Ch) e.fh(n.mutations);\n}\n\nasync function yo(t, e, n) {\n    const s = t.Ch.shift(), i = Zs.from(s, e, n);\n    await wo(t, (() => t.Dh.Bh(i))), \n    // It's possible that with the completion of this mutation another\n    // slot has freed up.\n    await Eo(t);\n}\n\nasync function go(t, e) {\n    // If the write stream closed after the write handshake completes, a write\n    // operation failed and we fail the pending operation.\n    e && bo(t)._h && \n    // This error affects the actual write.\n    await async function(t, e) {\n        // Only handle permanent errors here. If it's transient, just let the retry\n        // logic kick in.\n        if (n = e.code, tn(n) && n !== F.ABORTED) {\n            // This was a permanent error, the request itself was the problem\n            // so it's not going to succeed if we resend it.\n            const n = t.Ch.shift();\n            // In this case it's also unlikely that the server itself is melting\n            // down -- this was just a bad request so inhibit backoff on the next\n            // restart.\n                        bo(t).Yu(), await wo(t, (() => t.Dh.qh(n.batchId, e))), \n            // It's possible that with the completion of this mutation\n            // another slot has freed up.\n            await Eo(t);\n        }\n        var n;\n    }(t, e), \n    // The write stream might have been started by refilling the write\n    // pipeline for failed writes\n    mo(t) && Ao(t);\n}\n\n/**\n * Toggles the network state when the client gains or loses its primary lease.\n */\nasync function Vo(t, e) {\n    const n = b(t);\n    e ? (n.Nh.delete(2 /* IsSecondary */), await to(n)) : e || (n.Nh.add(2 /* IsSecondary */), \n    await eo(n), n.kh.set(\"Unknown\" /* Unknown */));\n}\n\n/**\n * If not yet initialized, registers the WatchStream and its network state\n * callback with `remoteStoreImpl`. Returns the existing stream if one is\n * already available.\n *\n * PORTING NOTE: On iOS and Android, the WatchStream gets registered on startup.\n * This is not done on Web to allow it to be tree-shaken.\n */ function po(t) {\n    return t.Uh || (\n    // Create stream (but note that it is not started yet).\n    t.Uh = function(t, e, n) {\n        const s = b(t);\n        return s.Ih(), new Hr(e, s.Qu, s.credentials, s.Qt, n);\n    }\n    /**\n * @license\n * Copyright 2018 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ (t.Sh, t._s, {\n        wu: ho.bind(null, t),\n        Tu: lo.bind(null, t),\n        ah: _o.bind(null, t)\n    }), t.Fh.push((async e => {\n        e ? (t.Uh.Yu(), co(t) ? oo(t) : t.kh.set(\"Unknown\" /* Unknown */)) : (await t.Uh.stop(), \n        uo(t));\n    }))), t.Uh;\n}\n\n/**\n * If not yet initialized, registers the WriteStream and its network state\n * callback with `remoteStoreImpl`. Returns the existing stream if one is\n * already available.\n *\n * PORTING NOTE: On iOS and Android, the WriteStream gets registered on startup.\n * This is not done on Web to allow it to be tree-shaken.\n */ function bo(t) {\n    return t.Qh || (\n    // Create stream (but note that it is not started yet).\n    t.Qh = function(t, e, n) {\n        const s = b(t);\n        return s.Ih(), new Jr(e, s.Qu, s.credentials, s.Qt, n);\n    }(t.Sh, t._s, {\n        wu: Ro.bind(null, t),\n        Tu: go.bind(null, t),\n        wh: Po.bind(null, t),\n        dh: yo.bind(null, t)\n    }), t.Fh.push((async e => {\n        e ? (t.Qh.Yu(), \n        // This will start the write stream if necessary.\n        await Eo(t)) : (await t.Qh.stop(), t.Ch.length > 0 && (R(\"RemoteStore\", `Stopping write stream with ${t.Ch.length} pending writes`), \n        t.Ch = []));\n    }))), t.Qh;\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Holds the listeners and the last received ViewSnapshot for a query being\n * tracked by EventManager.\n */ class vo {\n    constructor() {\n        this.Kh = void 0, this.listeners = [];\n    }\n}\n\nclass So {\n    constructor() {\n        this.queries = new Ri((t => le(t)), he), this.onlineState = \"Unknown\" /* Unknown */ , \n        this.Wh = new Set;\n    }\n}\n\nasync function Do(t, e) {\n    const n = b(t), s = e.query;\n    let i = !1, r = n.queries.get(s);\n    if (r || (i = !0, r = new vo), i) try {\n        r.Kh = await n.jh(s);\n    } catch (t) {\n        const n = ps(t, `Initialization of query '${_e(e.query)}' failed`);\n        return void e.onError(n);\n    }\n    n.queries.set(s, r), r.listeners.push(e);\n    // Run global snapshot listeners if a consistent snapshot has been emitted.\n    e.Gh(n.onlineState);\n    if (r.Kh) {\n        e.zh(r.Kh) && Fo(n);\n    }\n}\n\nasync function Co(t, e) {\n    const n = b(t), s = e.query;\n    let i = !1;\n    const r = n.queries.get(s);\n    if (r) {\n        const t = r.listeners.indexOf(e);\n        t >= 0 && (r.listeners.splice(t, 1), i = 0 === r.listeners.length);\n    }\n    if (i) return n.queries.delete(s), n.Hh(s);\n}\n\nfunction xo(t, e) {\n    const n = b(t);\n    let s = !1;\n    for (const t of e) {\n        const e = t.query, i = n.queries.get(e);\n        if (i) {\n            for (const e of i.listeners) e.zh(t) && (s = !0);\n            i.Kh = t;\n        }\n    }\n    s && Fo(n);\n}\n\nfunction No(t, e, n) {\n    const s = b(t), i = s.queries.get(e);\n    if (i) for (const t of i.listeners) t.onError(n);\n    // Remove all listeners. NOTE: We don't need to call syncEngine.unlisten()\n    // after an error.\n        s.queries.delete(e);\n}\n\n// Call all global snapshot listeners that have been set.\nfunction Fo(t) {\n    t.Wh.forEach((t => {\n        t.next();\n    }));\n}\n\n/**\n * QueryListener takes a series of internal view snapshots and determines\n * when to raise the event.\n *\n * It uses an Observer to dispatch events.\n */ class Oo {\n    constructor(t, e, n) {\n        this.query = t, this.Jh = e, \n        /**\n         * Initial snapshots (e.g. from cache) may not be propagated to the wrapped\n         * observer. This flag is set to true once we've actually raised an event.\n         */\n        this.Yh = !1, this.Xh = null, this.onlineState = \"Unknown\" /* Unknown */ , this.options = n || {};\n    }\n    /**\n     * Applies the new ViewSnapshot to this listener, raising a user-facing event\n     * if applicable (depending on what changed, whether the user has opted into\n     * metadata-only changes, etc.). Returns true if a user-facing event was\n     * indeed raised.\n     */    zh(t) {\n        if (!this.options.includeMetadataChanges) {\n            // Remove the metadata only changes.\n            const e = [];\n            for (const n of t.docChanges) 3 /* Metadata */ !== n.type && e.push(n);\n            t = new Rn(t.query, t.docs, t.Se, e, t.De, t.fromCache, t.Ce, \n            /* excludesMetadataChanges= */ !0);\n        }\n        let e = !1;\n        return this.Yh ? this.Zh(t) && (this.Jh.next(t), e = !0) : this.tl(t, this.onlineState) && (this.el(t), \n        e = !0), this.Xh = t, e;\n    }\n    onError(t) {\n        this.Jh.error(t);\n    }\n    /** Returns whether a snapshot was raised. */    Gh(t) {\n        this.onlineState = t;\n        let e = !1;\n        return this.Xh && !this.Yh && this.tl(this.Xh, t) && (this.el(this.Xh), e = !0), \n        e;\n    }\n    tl(t, e) {\n        // Always raise the first event when we're synced\n        if (!t.fromCache) return !0;\n        // NOTE: We consider OnlineState.Unknown as online (it should become Offline\n        // or Online if we wait long enough).\n                const n = \"Offline\" /* Offline */ !== e;\n        // Don't raise the event if we're online, aren't synced yet (checked\n        // above) and are waiting for a sync.\n                return (!this.options.nl || !n) && (!t.docs.et() || \"Offline\" /* Offline */ === e);\n        // Raise data from cache if we have any documents or we are offline\n        }\n    Zh(t) {\n        // We don't need to handle includeDocumentMetadataChanges here because\n        // the Metadata only changes have already been stripped out if needed.\n        // At this point the only changes we will see are the ones we should\n        // propagate.\n        if (t.docChanges.length > 0) return !0;\n        const e = this.Xh && this.Xh.hasPendingWrites !== t.hasPendingWrites;\n        return !(!t.Ce && !e) && !0 === this.options.includeMetadataChanges;\n        // Generally we should have hit one of the cases above, but it's possible\n        // to get here if there were only metadata docChanges and they got\n        // stripped out.\n        }\n    el(t) {\n        t = Rn.Ne(t.query, t.docs, t.De, t.fromCache), this.Yh = !0, this.Jh.next(t);\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * A complete element in the bundle stream, together with the byte length it\n * occupies in the stream.\n */ class ko {\n    constructor(t, \n    // How many bytes this element takes to store in the bundle.\n    e) {\n        this.payload = t, this.byteLength = e;\n    }\n    sl() {\n        return \"metadata\" in this.payload;\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Helper to convert objects from bundles to model objects in the SDK.\n */ class Mo {\n    constructor(t) {\n        this.Qt = t;\n    }\n    Pc(t) {\n        return qn(this.Qt, t);\n    }\n    /**\n     * Converts a BundleDocument to a MaybeDocument.\n     */    yc(t) {\n        return t.metadata.exists ? Gn(this.Qt, t.document, !1) : new St(this.Pc(t.metadata.name), this.gc(t.metadata.readTime));\n    }\n    gc(t) {\n        return Mn(t);\n    }\n}\n\n/**\n * A class to process the elements from a bundle, load them into local\n * storage and provide progress update while loading.\n */ class Lo {\n    constructor(t, e, n) {\n        this.il = t, this.bh = e, this.Qt = n, \n        /** Batched queries to be saved into storage */\n        this.queries = [], \n        /** Batched documents to be saved into storage */\n        this.documents = [], this.progress = $o(t);\n    }\n    /**\n     * Adds an element from the bundle to the loader.\n     *\n     * Returns a new progress if adding the element leads to a new progress,\n     * otherwise returns null.\n     */    rl(t) {\n        this.progress.bytesLoaded += t.byteLength;\n        let e = this.progress.documentsLoaded;\n        return t.payload.namedQuery ? this.queries.push(t.payload.namedQuery) : t.payload.documentMetadata ? (this.documents.push({\n            metadata: t.payload.documentMetadata\n        }), t.payload.documentMetadata.exists || ++e) : t.payload.document && (this.documents[this.documents.length - 1].document = t.payload.document, \n        ++e), e !== this.progress.documentsLoaded ? (this.progress.documentsLoaded = e, \n        Object.assign({}, this.progress)) : null;\n    }\n    ol(t) {\n        const e = new Map, n = new Mo(this.Qt);\n        for (const s of t) if (s.metadata.queries) {\n            const t = n.Pc(s.metadata.name);\n            for (const n of s.metadata.queries) {\n                const s = (e.get(n) || En()).add(t);\n                e.set(n, s);\n            }\n        }\n        return e;\n    }\n    /**\n     * Update the progress to 'Success' and return the updated progress.\n     */    async complete() {\n        const t = await Tr(this.bh, new Mo(this.Qt), this.documents, this.il.id), e = this.ol(this.documents);\n        for (const t of this.queries) await Ir(this.bh, t, e.get(t.name));\n        return this.progress.taskState = \"Success\", new Zi(Object.assign({}, this.progress), t);\n    }\n}\n\n/**\n * Returns a `LoadBundleTaskProgress` representing the initial progress of\n * loading a bundle.\n */ function $o(t) {\n    return {\n        taskState: \"Running\",\n        documentsLoaded: 0,\n        bytesLoaded: 0,\n        totalDocuments: t.totalDocuments,\n        totalBytes: t.totalBytes\n    };\n}\n\n/**\n * Returns a `LoadBundleTaskProgress` representing the progress that the loading\n * has succeeded.\n */\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nclass Bo {\n    constructor(t) {\n        this.key = t;\n    }\n}\n\nclass qo {\n    constructor(t) {\n        this.key = t;\n    }\n}\n\n/**\n * View is responsible for computing the final merged truth of what docs are in\n * a query. It gets notified of local and remote changes to docs, and applies\n * the query filters and limits to determine the most correct possible results.\n */ class Uo {\n    constructor(t, \n    /** Documents included in the remote target */\n    e) {\n        this.query = t, this.cl = e, this.al = null, \n        /**\n         * A flag whether the view is current with the backend. A view is considered\n         * current after it has seen the current flag from the backend and did not\n         * lose consistency within the watch stream (e.g. because of an existence\n         * filter mismatch).\n         */\n        this.Be = !1, \n        /** Documents in the view but not in the remote target */\n        this.ul = En(), \n        /** Document Keys that have local changes */\n        this.De = En(), this.hl = de(t), this.ll = new mn(this.hl);\n    }\n    /**\n     * The set of remote documents that the server has told us belongs to the target associated with\n     * this view.\n     */    get _l() {\n        return this.cl;\n    }\n    /**\n     * Iterates over a set of doc changes, applies the query limit, and computes\n     * what the new results should be, what the changes were, and whether we may\n     * need to go back to the local cache for more results. Does not make any\n     * changes to the view.\n     * @param docChanges - The doc changes to apply to this view.\n     * @param previousChanges - If this is being called with a refill, then start\n     *        with this set of docs and changes instead of the current view.\n     * @returns a new set of docs, changes, and refill flag.\n     */    fl(t, e) {\n        const n = e ? e.dl : new An, s = e ? e.ll : this.ll;\n        let i = e ? e.De : this.De, r = s, o = !1;\n        // Track the last doc in a (full) limit. This is necessary, because some\n        // update (a delete, or an update moving a doc past the old limit) might\n        // mean there is some other document in the local cache that either should\n        // come (1) between the old last limit doc and the new last document, in the\n        // case of updates, or (2) after the new last document, in the case of\n        // deletes. So we keep this doc at the old limit to compare the updates to.\n        // Note that this should never get used in a refill (when previousChanges is\n        // set), because there will only be adds -- no deletes or updates.\n        const c = ne(this.query) && s.size === this.query.limit ? s.last() : null, a = se(this.query) && s.size === this.query.limit ? s.first() : null;\n        // Drop documents out to meet limit/limitToLast requirement.\n        if (t.Xt(((t, e) => {\n            const u = s.get(t);\n            let h = e instanceof vt ? e : null;\n            h && (h = fe(this.query, h) ? h : null);\n            const l = !!u && this.De.has(u.key), _ = !!h && (h.Vt || \n            // We only consider committed mutations for documents that were\n            // mutated during the lifetime of the view.\n            this.De.has(h.key) && h.hasCommittedMutations);\n            let f = !1;\n            // Calculate change\n                        if (u && h) {\n                u.data().isEqual(h.data()) ? l !== _ && (n.track({\n                    type: 3 /* Metadata */ ,\n                    doc: h\n                }), f = !0) : this.wl(u, h) || (n.track({\n                    type: 2 /* Modified */ ,\n                    doc: h\n                }), f = !0, (c && this.hl(h, c) > 0 || a && this.hl(h, a) < 0) && (\n                // This doc moved from inside the limit to outside the limit.\n                // That means there may be some other doc in the local cache\n                // that should be included instead.\n                o = !0));\n            } else !u && h ? (n.track({\n                type: 0 /* Added */ ,\n                doc: h\n            }), f = !0) : u && !h && (n.track({\n                type: 1 /* Removed */ ,\n                doc: u\n            }), f = !0, (c || a) && (\n            // A doc was removed from a full limit query. We'll need to\n            // requery from the local cache to see if we know about some other\n            // doc that should be in the results.\n            o = !0));\n            f && (h ? (r = r.add(h), i = _ ? i.add(t) : i.delete(t)) : (r = r.delete(t), i = i.delete(t)));\n        })), ne(this.query) || se(this.query)) for (;r.size > this.query.limit; ) {\n            const t = ne(this.query) ? r.last() : r.first();\n            r = r.delete(t.key), i = i.delete(t.key), n.track({\n                type: 1 /* Removed */ ,\n                doc: t\n            });\n        }\n        return {\n            ll: r,\n            dl: n,\n            lc: o,\n            De: i\n        };\n    }\n    wl(t, e) {\n        // We suppress the initial change event for documents that were modified as\n        // part of a write acknowledgment (e.g. when the value of a server transform\n        // is applied) as Watch will send us the same document again.\n        // By suppressing the event, we only raise two user visible events (one with\n        // `hasPendingWrites` and the final state of the document) instead of three\n        // (one with `hasPendingWrites`, the modified document with\n        // `hasPendingWrites` and the final state of the document).\n        return t.Vt && e.hasCommittedMutations && !e.Vt;\n    }\n    /**\n     * Updates the view with the given ViewDocumentChanges and optionally updates\n     * limbo docs and sync state from the provided target change.\n     * @param docChanges - The set of changes to make to the view's docs.\n     * @param updateLimboDocuments - Whether to update limbo documents based on\n     *        this change.\n     * @param targetChange - A target change to apply for computing limbo docs and\n     *        sync state.\n     * @returns A new ViewChange with the given docs, changes, and sync state.\n     */\n    // PORTING NOTE: The iOS/Android clients always compute limbo document changes.\n    wi(t, e, n) {\n        const s = this.ll;\n        this.ll = t.ll, this.De = t.De;\n        // Sort changes based on type and query comparator\n        const i = t.dl.ve();\n        i.sort(((t, e) => function(t, e) {\n            const n = t => {\n                switch (t) {\n                  case 0 /* Added */ :\n                    return 1;\n\n                  case 2 /* Modified */ :\n                  case 3 /* Metadata */ :\n                    // A metadata change is converted to a modified change at the public\n                    // api layer.  Since we sort by document key and then change type,\n                    // metadata and modified changes must be sorted equivalently.\n                    return 2;\n\n                  case 1 /* Removed */ :\n                    return 0;\n\n                  default:\n                    return V();\n                }\n            };\n            return n(t) - n(e);\n        }\n        /**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ (t.type, e.type) || this.hl(t.doc, e.doc))), this.El(n);\n        const r = e ? this.Tl() : [], o = 0 === this.ul.size && this.Be ? 1 /* Synced */ : 0 /* Local */ , c = o !== this.al;\n        if (this.al = o, 0 !== i.length || c) {\n            return {\n                snapshot: new Rn(this.query, t.ll, s, i, t.De, 0 /* Local */ === o, c, \n                /* excludesMetadataChanges= */ !1),\n                Il: r\n            };\n        }\n        // no changes\n        return {\n            Il: r\n        };\n    }\n    /**\n     * Applies an OnlineState change to the view, potentially generating a\n     * ViewChange if the view's syncState changes as a result.\n     */    Gh(t) {\n        return this.Be && \"Offline\" /* Offline */ === t ? (\n        // If we're offline, set `current` to false and then call applyChanges()\n        // to refresh our syncState and generate a ViewChange as appropriate. We\n        // are guaranteed to get a new TargetChange that sets `current` back to\n        // true once the client is back online.\n        this.Be = !1, this.wi({\n            ll: this.ll,\n            dl: new An,\n            De: this.De,\n            lc: !1\n        }, \n        /* updateLimboDocuments= */ !1)) : {\n            Il: []\n        };\n    }\n    /**\n     * Returns whether the doc for the given key should be in limbo.\n     */    ml(t) {\n        // If the remote end says it's part of this query, it's not in limbo.\n        return !this.cl.has(t) && (\n        // The local store doesn't think it's a result, so it shouldn't be in limbo.\n        !!this.ll.has(t) && !this.ll.get(t).Vt);\n    }\n    /**\n     * Updates syncedDocuments, current, and limbo docs based on the given change.\n     * Returns the list of changes to which docs are in limbo.\n     */    El(t) {\n        t && (t.qe.forEach((t => this.cl = this.cl.add(t))), t.Ue.forEach((t => {})), t.Qe.forEach((t => this.cl = this.cl.delete(t))), \n        this.Be = t.Be);\n    }\n    Tl() {\n        // We can only determine limbo documents when we're in-sync with the server.\n        if (!this.Be) return [];\n        // TODO(klimt): Do this incrementally so that it's not quadratic when\n        // updating many documents.\n                const t = this.ul;\n        this.ul = En(), this.ll.forEach((t => {\n            this.ml(t.key) && (this.ul = this.ul.add(t.key));\n        }));\n        // Diff the new limbo docs with the old limbo docs.\n        const e = [];\n        return t.forEach((t => {\n            this.ul.has(t) || e.push(new qo(t));\n        })), this.ul.forEach((n => {\n            t.has(n) || e.push(new Bo(n));\n        })), e;\n    }\n    /**\n     * Update the in-memory state of the current view with the state read from\n     * persistence.\n     *\n     * We update the query view whenever a client's primary status changes:\n     * - When a client transitions from primary to secondary, it can miss\n     *   LocalStorage updates and its query views may temporarily not be\n     *   synchronized with the state on disk.\n     * - For secondary to primary transitions, the client needs to update the list\n     *   of `syncedDocuments` since secondary clients update their query views\n     *   based purely on synthesized RemoteEvents.\n     *\n     * @param queryResult.documents - The documents that match the query according\n     * to the LocalStore.\n     * @param queryResult.remoteKeys - The keys of the documents that match the\n     * query according to the backend.\n     *\n     * @returns The ViewChange that resulted from this synchronization.\n     */\n    // PORTING NOTE: Multi-tab only.\n    Al(t) {\n        this.cl = t.Rc, this.ul = En();\n        const e = this.fl(t.documents);\n        return this.wi(e, /*updateLimboDocuments=*/ !0);\n    }\n    /**\n     * Returns a view snapshot as if this query was just listened to. Contains\n     * a document add for every existing document and the `fromCache` and\n     * `hasPendingWrites` status of the already established view.\n     */\n    // PORTING NOTE: Multi-tab only.\n    Rl() {\n        return Rn.Ne(this.query, this.ll, this.De, 0 /* Local */ === this.al);\n    }\n}\n\n/**\n * QueryView contains all of the data that SyncEngine needs to keep track of for\n * a particular query.\n */\nclass Qo {\n    constructor(\n    /**\n     * The query itself.\n     */\n    t, \n    /**\n     * The target number created by the client that is used in the watch\n     * stream to identify this query.\n     */\n    e, \n    /**\n     * The view is responsible for computing the final merged truth of what\n     * docs are in the query. It gets notified of local and remote changes,\n     * and applies the query filters and limits to determine the most correct\n     * possible results.\n     */\n    n) {\n        this.query = t, this.targetId = e, this.view = n;\n    }\n}\n\n/** Tracks a limbo resolution. */ class Ko {\n    constructor(t) {\n        this.key = t, \n        /**\n         * Set to true once we've received a document. This is used in\n         * getRemoteKeysForTarget() and ultimately used by WatchChangeAggregator to\n         * decide whether it needs to manufacture a delete event for the target once\n         * the target is CURRENT.\n         */\n        this.Pl = !1;\n    }\n}\n\n/**\n * An implementation of `SyncEngine` coordinating with other parts of SDK.\n *\n * The parts of SyncEngine that act as a callback to RemoteStore need to be\n * registered individually. This is done in `syncEngineWrite()` and\n * `syncEngineListen()` (as well as `applyPrimaryState()`) as these methods\n * serve as entry points to RemoteStore's functionality.\n *\n * Note: some field defined in this class might have public access level, but\n * the class is not exported so they are only accessible from this module.\n * This is useful to implement optional features (like bundles) in free\n * functions, such that they are tree-shakeable.\n */ class Wo {\n    constructor(t, e, n, \n    // PORTING NOTE: Manages state synchronization in multi-tab environments.\n    s, i, r) {\n        this.bh = t, this.yl = e, this.gl = n, this.Vl = s, this.currentUser = i, this.pl = r, \n        this.bl = {}, this.vl = new Ri((t => le(t)), he), this.Sl = new Map, \n        /**\n         * The keys of documents that are in limbo for which we haven't yet started a\n         * limbo resolution query.\n         */\n        this.Dl = [], \n        /**\n         * Keeps track of the target ID for each document that is in limbo with an\n         * active target.\n         */\n        this.Cl = new nn(J.H), \n        /**\n         * Keeps track of the information about an active limbo resolution for each\n         * active target ID that was started for the purpose of limbo resolution.\n         */\n        this.xl = new Map, this.Nl = new Ar, \n        /** Stores user completion handlers, indexed by User and BatchId. */\n        this.Fl = {}, \n        /** Stores user callbacks waiting for all pending writes to be acknowledged. */\n        this.Ol = new Map, this.kl = Di.$i(), this.onlineState = \"Unknown\" /* Unknown */ , \n        // The primary state is set to `true` or `false` immediately after Firestore\n        // startup. In the interim, a client should only be considered primary if\n        // `isPrimary` is true.\n        this.Ml = void 0;\n    }\n    get Ll() {\n        return !0 === this.Ml;\n    }\n}\n\n/**\n * Initiates the new listen, resolves promise when listen enqueued to the\n * server. All the subsequent view snapshots or errors are sent to the\n * subscribed handlers. Returns the initial snapshot.\n */\nasync function jo(t, e) {\n    const n = Rc(t);\n    let s, i;\n    const r = n.vl.get(e);\n    if (r) \n    // PORTING NOTE: With Multi-Tab Web, it is possible that a query view\n    // already exists when EventManager calls us for the first time. This\n    // happens when the primary tab is already listening to this query on\n    // behalf of another tab and the user of the primary also starts listening\n    // to the query. EventManager will not have an assigned target ID in this\n    // case and calls `listen` to obtain this ID.\n    s = r.targetId, n.Vl.Oa(s), i = r.view.Rl(); else {\n        const t = await lr(n.bh, ae(e)), r = n.Vl.Oa(t.targetId);\n        s = t.targetId, i = await Go(n, e, s, \"current\" === r), n.Ll && no(n.yl, t);\n    }\n    return i;\n}\n\n/**\n * Registers a view for a previously unknown query and computes its initial\n * snapshot.\n */ async function Go(t, e, n, s) {\n    // PORTING NOTE: On Web only, we inject the code that registers new Limbo\n    // targets based on view changes. This allows us to only depend on Limbo\n    // changes when user code includes queries.\n    t.$l = (e, n, s) => async function(t, e, n, s) {\n        let i = e.view.fl(n);\n        i.lc && (\n        // The query has a limit and some docs were removed, so we need\n        // to re-run the query against the local store to make sure we\n        // didn't lose any good docs that had been past the limit.\n        i = await fr(t.bh, e.query, \n        /* usePreviousResults= */ !1).then((({documents: t}) => e.view.fl(t, i))));\n        const r = s && s.Fe.get(e.targetId), o = e.view.wi(i, \n        /* updateLimboDocuments= */ t.Ll, r);\n        return oc(t, e.targetId, o.Il), o.snapshot;\n    }(t, e, n, s);\n    const i = await fr(t.bh, e, \n    /* usePreviousResults= */ !0), r = new Uo(e, i.Rc), o = r.fl(i.documents), c = yn.$e(n, s && \"Offline\" /* Offline */ !== t.onlineState), a = r.wi(o, \n    /* updateLimboDocuments= */ t.Ll, c);\n    oc(t, n, a.Il);\n    const u = new Qo(e, n, r);\n    return t.vl.set(e, u), t.Sl.has(n) ? t.Sl.get(n).push(e) : t.Sl.set(n, [ e ]), a.snapshot;\n}\n\n/** Stops listening to the query. */ async function zo(t, e) {\n    const n = b(t), s = n.vl.get(e), i = n.Sl.get(s.targetId);\n    if (i.length > 1) return n.Sl.set(s.targetId, i.filter((t => !he(t, e)))), void n.vl.delete(e);\n    // No other queries are mapped to the target, clean up the query and the target.\n        if (n.Ll) {\n        // We need to remove the local query target first to allow us to verify\n        // whether any other client is still interested in this target.\n        n.Vl.Ma(s.targetId);\n        n.Vl.Da(s.targetId) || await _r(n.bh, s.targetId, \n        /*keepPersistedTargetData=*/ !1).then((() => {\n            n.Vl.$a(s.targetId), so(n.yl, s.targetId), ic(n, s.targetId);\n        })).catch(Ai);\n    } else ic(n, s.targetId), await _r(n.bh, s.targetId, \n    /*keepPersistedTargetData=*/ !0);\n}\n\n/**\n * Initiates the write of local mutation batch which involves adding the\n * writes to the mutation queue, notifying the remote store about new\n * mutations and raising events for any changes this write caused.\n *\n * The promise returned by this call is resolved when the above steps\n * have completed, *not* when the write was acked by the backend. The\n * userCallback is resolved once the write was acked/rejected by the\n * backend (or failed locally for any other reason).\n */ async function Ho(t, e, n) {\n    const s = Pc(t);\n    try {\n        const t = await function(t, e) {\n            const n = b(t), s = K.now(), i = e.reduce(((t, e) => t.add(e.key)), En());\n            let r;\n            return n.persistence.runTransaction(\"Locally write mutations\", \"readwrite\", (t => n.Tc.Xo(t, i).next((i => {\n                r = i;\n                // For non-idempotent mutations (such as `FieldValue.increment()`),\n                // we record the base state in a separate patch mutation. This is\n                // later used to guarantee consistent values and prevents flicker\n                // even if the backend sends us an update that already includes our\n                // transform.\n                const o = [];\n                for (const t of e) {\n                    const e = Be(t, r.get(t.key));\n                    null != e && \n                    // NOTE: The base state should only be applied if there's some\n                    // existing document to override, so use a Precondition of\n                    // exists=true\n                    o.push(new Ke(t.key, e, pt(e.proto.mapValue), Oe.exists(!0)));\n                }\n                return n.zo.Ri(t, s, o, e);\n            })))).then((t => {\n                const e = t.xs(r);\n                return {\n                    batchId: t.batchId,\n                    ri: e\n                };\n            }));\n        }(s.bh, e);\n        s.Vl.Ca(t.batchId), function(t, e, n) {\n            let s = t.Fl[t.currentUser.A()];\n            s || (s = new nn(D));\n            s = s.zt(e, n), t.Fl[t.currentUser.A()] = s;\n        }\n        /**\n * Resolves or rejects the user callback for the given batch and then discards\n * it.\n */ (s, t.batchId, n), await uc(s, t.ri), await Eo(s.yl);\n    } catch (t) {\n        // If we can't persist the mutation, we reject the user callback and\n        // don't send the mutation. The user can then retry the write.\n        const e = ps(t, \"Failed to persist write\");\n        n.reject(e);\n    }\n}\n\n/**\n * Applies one remote event to the sync engine, notifying any views of the\n * changes, and releasing any pending mutation batches that would become\n * visible because of the snapshot version the remote event contains.\n */ async function Jo(t, e) {\n    const n = b(t);\n    try {\n        const t = await ar(n.bh, e);\n        // Update `receivedDocument` as appropriate for any limbo targets.\n                e.Fe.forEach(((t, e) => {\n            const s = n.xl.get(e);\n            s && (\n            // Since this is a limbo resolution lookup, it's for a single document\n            // and it could be added, modified, or removed, but not a combination.\n            p(t.qe.size + t.Ue.size + t.Qe.size <= 1), t.qe.size > 0 ? s.Pl = !0 : t.Ue.size > 0 ? p(s.Pl) : t.Qe.size > 0 && (p(s.Pl), \n            s.Pl = !1));\n        })), await uc(n, t, e);\n    } catch (t) {\n        await Ai(t);\n    }\n}\n\n/**\n * Applies an OnlineState change to the sync engine and notifies any views of\n * the change.\n */ function Yo(t, e, n) {\n    const s = b(t);\n    // If we are the secondary client, we explicitly ignore the remote store's\n    // online state (the local client may go offline, even though the primary\n    // tab remains online) and only apply the primary tab's online state from\n    // SharedClientState.\n        if (s.Ll && 0 /* RemoteStore */ === n || !s.Ll && 1 /* SharedClientState */ === n) {\n        const t = [];\n        s.vl.forEach(((n, s) => {\n            const i = s.view.Gh(e);\n            i.snapshot && t.push(i.snapshot);\n        })), function(t, e) {\n            const n = b(t);\n            n.onlineState = e;\n            let s = !1;\n            n.queries.forEach(((t, n) => {\n                for (const t of n.listeners) \n                // Run global snapshot listeners if a consistent snapshot has been emitted.\n                t.Gh(e) && (s = !0);\n            })), s && Fo(n);\n        }(s.gl, e), t.length && s.bl.ah(t), s.onlineState = e, s.Ll && s.Vl.Qa(e);\n    }\n}\n\n/**\n * Rejects the listen for the given targetID. This can be triggered by the\n * backend for any active target.\n *\n * @param syncEngine - The sync engine implementation.\n * @param targetId - The targetID corresponds to one previously initiated by the\n * user as part of TargetData passed to listen() on RemoteStore.\n * @param err - A description of the condition that has forced the rejection.\n * Nearly always this will be an indication that the user is no longer\n * authorized to see the data matching the target.\n */ async function Xo(t, e, n) {\n    const s = b(t);\n    // PORTING NOTE: Multi-tab only.\n        s.Vl.Ba(e, \"rejected\", n);\n    const i = s.xl.get(e), r = i && i.key;\n    if (r) {\n        // TODO(klimt): We really only should do the following on permission\n        // denied errors, but we don't have the cause code here.\n        // It's a limbo doc. Create a synthetic event saying it was deleted.\n        // This is kind of a hack. Ideally, we would have a method in the local\n        // store to purge a document. However, it would be tricky to keep all of\n        // the local store's invariants with another method.\n        let t = new nn(J.H);\n        t = t.zt(r, new St(r, W.min()));\n        const n = En().add(r), i = new Pn(W.min(), \n        /* targetChanges= */ new Map, \n        /* targetMismatches= */ new on(D), t, n);\n        await Jo(s, i), \n        // Since this query failed, we won't want to manually unlisten to it.\n        // We only remove it from bookkeeping after we successfully applied the\n        // RemoteEvent. If `applyRemoteEvent()` throws, we want to re-listen to\n        // this query when the RemoteStore restarts the Watch stream, which should\n        // re-trigger the target failure.\n        s.Cl = s.Cl.remove(r), s.xl.delete(e), ac(s);\n    } else await _r(s.bh, e, \n    /* keepPersistedTargetData */ !1).then((() => ic(s, e, n))).catch(Ai);\n}\n\nasync function Zo(t, e) {\n    const n = b(t), s = e.batch.batchId;\n    try {\n        const t = await or(n.bh, e);\n        // The local store may or may not be able to apply the write result and\n        // raise events immediately (depending on whether the watcher is caught\n        // up), so we raise user callbacks first so that they consistently happen\n        // before listen events.\n                sc(n, s, /*error=*/ null), nc(n, s), n.Vl.Na(s, \"acknowledged\"), await uc(n, t);\n    } catch (t) {\n        await Ai(t);\n    }\n}\n\nasync function tc(t, e, n) {\n    const s = b(t);\n    try {\n        const t = await function(t, e) {\n            const n = b(t);\n            return n.persistence.runTransaction(\"Reject batch\", \"readwrite-primary\", (t => {\n                let s;\n                return n.zo.Pi(t, e).next((e => (p(null !== e), s = e.keys(), n.zo.Ci(t, e)))).next((() => n.zo.Fi(t))).next((() => n.Tc.Xo(t, s)));\n            }));\n        }\n        /**\n * Returns the largest (latest) batch id in mutation queue that is pending\n * server response.\n *\n * Returns `BATCHID_UNKNOWN` if the queue is empty.\n */ (s.bh, e);\n        // The local store may or may not be able to apply the write result and\n        // raise events immediately (depending on whether the watcher is caught up),\n        // so we raise user callbacks first so that they consistently happen before\n        // listen events.\n                sc(s, e, n), nc(s, e), s.Vl.Na(e, \"rejected\", n), await uc(s, t);\n    } catch (n) {\n        await Ai(n);\n    }\n}\n\n/**\n * Registers a user callback that resolves when all pending mutations at the moment of calling\n * are acknowledged .\n */ async function ec(t, e) {\n    const n = b(t);\n    ao(n.yl) || R(\"SyncEngine\", \"The network is disabled. The task returned by 'awaitPendingWrites()' will not complete until the network is enabled.\");\n    try {\n        const t = await function(t) {\n            const e = b(t);\n            return e.persistence.runTransaction(\"Get highest unacknowledged batch id\", \"readonly\", (t => e.zo.Vi(t)));\n        }(n.bh);\n        if (-1 === t) \n        // Trigger the callback right away if there is no pending writes at the moment.\n        return void e.resolve();\n        const s = n.Ol.get(t) || [];\n        s.push(e), n.Ol.set(t, s);\n    } catch (t) {\n        const n = ps(t, \"Initialization of waitForPendingWrites() operation failed\");\n        e.reject(n);\n    }\n}\n\n/**\n * Triggers the callbacks that are waiting for this batch id to get acknowledged by server,\n * if there are any.\n */ function nc(t, e) {\n    (t.Ol.get(e) || []).forEach((t => {\n        t.resolve();\n    })), t.Ol.delete(e);\n}\n\n/** Reject all outstanding callbacks waiting for pending writes to complete. */ function sc(t, e, n) {\n    const s = b(t);\n    let i = s.Fl[s.currentUser.A()];\n    // NOTE: Mutations restored from persistence won't have callbacks, so it's\n    // okay for there to be no callback for this ID.\n        if (i) {\n        const t = i.get(e);\n        t && (n ? t.reject(n) : t.resolve(), i = i.remove(e)), s.Fl[s.currentUser.A()] = i;\n    }\n}\n\nfunction ic(t, e, n = null) {\n    t.Vl.Ma(e);\n    for (const s of t.Sl.get(e)) t.vl.delete(s), n && t.bl.Bl(s, n);\n    if (t.Sl.delete(e), t.Ll) {\n        t.Nl.Oc(e).forEach((e => {\n            t.Nl.Oi(e) || \n            // We removed the last reference for this key\n            rc(t, e);\n        }));\n    }\n}\n\nfunction rc(t, e) {\n    // It's possible that the target already got removed because the query failed. In that case,\n    // the key won't exist in `limboTargetsByKey`. Only do the cleanup if we still have the target.\n    const n = t.Cl.get(e);\n    null !== n && (so(t.yl, n), t.Cl = t.Cl.remove(e), t.xl.delete(n), ac(t));\n}\n\nfunction oc(t, e, n) {\n    for (const s of n) if (s instanceof Bo) t.Nl.nr(s.key, e), cc(t, s); else if (s instanceof qo) {\n        R(\"SyncEngine\", \"Document no longer in limbo: \" + s.key), t.Nl.ir(s.key, e);\n        t.Nl.Oi(s.key) || \n        // We removed the last reference for this key\n        rc(t, s.key);\n    } else V();\n}\n\nfunction cc(t, e) {\n    const n = e.key;\n    t.Cl.get(n) || (R(\"SyncEngine\", \"New document in limbo: \" + n), t.Dl.push(n), ac(t));\n}\n\n/**\n * Starts listens for documents in limbo that are enqueued for resolution,\n * subject to a maximum number of concurrent resolutions.\n *\n * Without bounding the number of concurrent resolutions, the server can fail\n * with \"resource exhausted\" errors which can lead to pathological client\n * behavior as seen in https://github.com/firebase/firebase-js-sdk/issues/2683.\n */ function ac(t) {\n    for (;t.Dl.length > 0 && t.Cl.size < t.pl; ) {\n        const e = t.Dl.shift(), n = t.kl.next();\n        t.xl.set(n, new Ko(e)), t.Cl = t.Cl.zt(e, n), no(t.yl, new Ee(ae(ee(e.path)), n, 2 /* LimboResolution */ , Q.q));\n    }\n}\n\nasync function uc(t, e, n) {\n    const s = b(t), i = [], r = [], o = [];\n    s.vl.et() || (s.vl.forEach(((t, c) => {\n        o.push(s.$l(c, e, n).then((t => {\n            if (t) {\n                s.Ll && s.Vl.Ba(c.targetId, t.fromCache ? \"not-current\" : \"current\"), i.push(t);\n                const e = er.oc(c.targetId, t);\n                r.push(e);\n            }\n        })));\n    })), await Promise.all(o), s.bl.ah(i), await async function(t, e) {\n        const n = b(t);\n        try {\n            await n.persistence.runTransaction(\"notifyLocalViewChanges\", \"readwrite\", (t => ws.forEach(e, (e => ws.forEach(e.ic, (s => n.persistence.Ti.nr(t, e.targetId, s))).next((() => ws.forEach(e.rc, (s => n.persistence.Ti.ir(t, e.targetId, s)))))))));\n        } catch (t) {\n            if (!As(t)) throw t;\n            // If `notifyLocalViewChanges` fails, we did not advance the sequence\n            // number for the documents that were included in this transaction.\n            // This might trigger them to be deleted earlier than they otherwise\n            // would have, but it should not invalidate the integrity of the data.\n            R(\"LocalStore\", \"Failed to update sequence numbers: \" + t);\n        }\n        for (const t of e) {\n            const e = t.targetId;\n            if (!t.fromCache) {\n                const t = n.fc.get(e), s = t.kt, i = t.$t(s);\n                // Advance the last limbo free snapshot version\n                                n.fc = n.fc.zt(e, i);\n            }\n        }\n    }(s.bh, r));\n}\n\nasync function hc(t, e) {\n    const n = b(t);\n    if (!n.currentUser.isEqual(e)) {\n        R(\"SyncEngine\", \"User change. New user:\", e.A());\n        const t = await rr(n.bh, e);\n        n.currentUser = e, \n        // Fails tasks waiting for pending writes requested by previous user.\n        function(t, e) {\n            t.Ol.forEach((t => {\n                t.forEach((t => {\n                    t.reject(new O(F.CANCELLED, e));\n                }));\n            })), t.Ol.clear();\n        }(n, \"'waitForPendingWrites' promise is rejected due to a user change.\"), \n        // TODO(b/114226417): Consider calling this only in the primary tab.\n        n.Vl.Ua(e, t.mc, t.Ac), await uc(n, t.Ic);\n    }\n}\n\nfunction lc(t, e) {\n    const n = b(t), s = n.xl.get(e);\n    if (s && s.Pl) return En().add(s.key);\n    {\n        let t = En();\n        const s = n.Sl.get(e);\n        if (!s) return t;\n        for (const e of s) {\n            const s = n.vl.get(e);\n            t = t.Pe(s.view._l);\n        }\n        return t;\n    }\n}\n\n/**\n * Reconcile the list of synced documents in an existing view with those\n * from persistence.\n */ async function _c(t, e) {\n    const n = b(t), s = await fr(n.bh, e.query, \n    /* usePreviousResults= */ !0), i = e.view.Al(s);\n    return n.Ll && oc(n, e.targetId, i.Il), i;\n}\n\n/**\n * Retrieves newly changed documents from remote document cache and raises\n * snapshots if needed.\n */\n// PORTING NOTE: Multi-Tab only.\nasync function fc(t) {\n    const e = b(t);\n    return wr(e.bh).then((t => uc(e, t)));\n}\n\n/** Applies a mutation state to an existing batch.  */\n// PORTING NOTE: Multi-Tab only.\nasync function dc(t, e, n, s) {\n    const i = b(t), r = await function(t, e) {\n        const n = b(t), s = b(n.zo);\n        return n.persistence.runTransaction(\"Lookup mutation documents\", \"readonly\", (t => s.yi(t, e).next((e => e ? n.Tc.Xo(t, e) : ws.resolve(null)))));\n    }\n    // PORTING NOTE: Multi-Tab only.\n    (i.bh, e);\n    null !== r ? (\"pending\" === n ? \n    // If we are the primary client, we need to send this write to the\n    // backend. Secondary clients will ignore these writes since their remote\n    // connection is disabled.\n    await Eo(i.yl) : \"acknowledged\" === n || \"rejected\" === n ? (\n    // NOTE: Both these methods are no-ops for batches that originated from\n    // other clients.\n    sc(i, e, s || null), nc(i, e), function(t, e) {\n        b(b(t).zo).xi(e);\n    }\n    // PORTING NOTE: Multi-Tab only.\n    (i.bh, e)) : V(), await uc(i, r)) : \n    // A throttled tab may not have seen the mutation before it was completed\n    // and removed from the mutation queue, in which case we won't have cached\n    // the affected documents. In this case we can safely ignore the update\n    // since that means we didn't apply the mutation locally at all (if we\n    // had, we would have cached the affected documents), and so we will just\n    // see any resulting document changes via normal remote document updates\n    // as applicable.\n    R(\"SyncEngine\", \"Cannot apply mutation batch with id: \" + e);\n}\n\n/** Applies a query target change from a different tab. */\n// PORTING NOTE: Multi-Tab only.\nasync function wc(t, e) {\n    const n = b(t);\n    if (Rc(n), Pc(n), !0 === e && !0 !== n.Ml) {\n        // Secondary tabs only maintain Views for their local listeners and the\n        // Views internal state may not be 100% populated (in particular\n        // secondary tabs don't track syncedDocuments, the set of documents the\n        // server considers to be in the target). So when a secondary becomes\n        // primary, we need to need to make sure that all views for all targets\n        // match the state on disk.\n        const t = n.Vl.va(), e = await Ec(n, t.it());\n        n.Ml = !0, await Vo(n.yl, !0);\n        for (const t of e) no(n.yl, t);\n    } else if (!1 === e && !1 !== n.Ml) {\n        const t = [];\n        let e = Promise.resolve();\n        n.Sl.forEach(((s, i) => {\n            n.Vl.La(i) ? t.push(i) : e = e.then((() => (ic(n, i), _r(n.bh, i, \n            /*keepPersistedTargetData=*/ !0)))), so(n.yl, i);\n        })), await e, await Ec(n, t), \n        // PORTING NOTE: Multi-Tab only.\n        function(t) {\n            const e = b(t);\n            e.xl.forEach(((t, n) => {\n                so(e.yl, n);\n            })), e.Nl.kc(), e.xl = new Map, e.Cl = new nn(J.H);\n        }\n        /**\n * Reconcile the query views of the provided query targets with the state from\n * persistence. Raises snapshots for any changes that affect the local\n * client and returns the updated state of all target's query data.\n *\n * @param syncEngine - The sync engine implementation\n * @param targets - the list of targets with views that need to be recomputed\n * @param transitionToPrimary - `true` iff the tab transitions from a secondary\n * tab to a primary tab\n */\n        // PORTING NOTE: Multi-Tab only.\n        (n), n.Ml = !1, await Vo(n.yl, !1);\n    }\n}\n\nasync function Ec(t, e, n) {\n    const s = b(t), i = [], r = [];\n    for (const t of e) {\n        let e;\n        const n = s.Sl.get(t);\n        if (n && 0 !== n.length) {\n            // For queries that have a local View, we fetch their current state\n            // from LocalStore (as the resume token and the snapshot version\n            // might have changed) and reconcile their views with the persisted\n            // state (the list of syncedDocuments may have gotten out of sync).\n            e = await lr(s.bh, ae(n[0]));\n            for (const t of n) {\n                const e = s.vl.get(t), n = await _c(s, e);\n                n.snapshot && r.push(n.snapshot);\n            }\n        } else {\n            // For queries that never executed on this client, we need to\n            // allocate the target in LocalStore and initialize a new View.\n            const n = await dr(s.bh, t);\n            e = await lr(s.bh, n), await Go(s, Tc(n), t, \n            /*current=*/ !1);\n        }\n        i.push(e);\n    }\n    return s.bl.ah(r), i;\n}\n\n/**\n * Creates a `Query` object from the specified `Target`. There is no way to\n * obtain the original `Query`, so we synthesize a `Query` from the `Target`\n * object.\n *\n * The synthesized result might be different from the original `Query`, but\n * since the synthesized `Query` should return the same results as the\n * original one (only the presentation of results might differ), the potential\n * difference will not cause issues.\n */\n// PORTING NOTE: Multi-Tab only.\nfunction Tc(t) {\n    return te(t.path, t.collectionGroup, t.orderBy, t.filters, t.limit, \"F\" /* First */ , t.startAt, t.endAt);\n}\n\n/** Returns the IDs of the clients that are currently active. */\n// PORTING NOTE: Multi-Tab only.\nfunction Ic(t) {\n    const e = b(t);\n    return b(b(e.bh).persistence).Uo();\n}\n\n/** Applies a query target change from a different tab. */\n// PORTING NOTE: Multi-Tab only.\nasync function mc(t, e, n, s) {\n    const i = b(t);\n    if (i.Ml) \n    // If we receive a target state notification via WebStorage, we are\n    // either already secondary or another tab has taken the primary lease.\n    R(\"SyncEngine\", \"Ignoring unexpected query state notification.\"); else if (i.Sl.has(e)) switch (n) {\n      case \"current\":\n      case \"not-current\":\n        {\n            const t = await wr(i.bh), s = Pn.Le(e, \"current\" === n);\n            await uc(i, t, s);\n            break;\n        }\n\n      case \"rejected\":\n        await _r(i.bh, e, \n        /* keepPersistedTargetData */ !0), ic(i, e, s);\n        break;\n\n      default:\n        V();\n    }\n}\n\n/** Adds or removes Watch targets for queries from different tabs. */ async function Ac(t, e, n) {\n    const s = Rc(t);\n    if (s.Ml) {\n        for (const t of e) {\n            if (s.Sl.has(t)) {\n                // A target might have been added in a previous attempt\n                R(\"SyncEngine\", \"Adding an already active target \" + t);\n                continue;\n            }\n            const e = await dr(s.bh, t), n = await lr(s.bh, e);\n            await Go(s, Tc(e), n.targetId, \n            /*current=*/ !1), no(s.yl, n);\n        }\n        for (const t of n) \n        // Check that the target is still active since the target might have been\n        // removed if it has been rejected by the backend.\n        s.Sl.has(t) && \n        // Release queries that are still active.\n        await _r(s.bh, t, \n        /* keepPersistedTargetData */ !1).then((() => {\n            so(s.yl, t), ic(s, t);\n        })).catch(Ai);\n    }\n}\n\nfunction Rc(t) {\n    const e = b(t);\n    return e.yl.Dh.$h = Jo.bind(null, e), e.yl.Dh.vn = lc.bind(null, e), e.yl.Dh.Lh = Xo.bind(null, e), \n    e.bl.ah = xo.bind(null, e.gl), e.bl.Bl = No.bind(null, e.gl), e;\n}\n\nfunction Pc(t) {\n    const e = b(t);\n    return e.yl.Dh.Bh = Zo.bind(null, e), e.yl.Dh.qh = tc.bind(null, e), e;\n}\n\n/**\n * Loads a Firestore bundle into the SDK. The returned promise resolves when\n * the bundle finished loading.\n *\n * @param syncEngine - SyncEngine to use.\n * @param bundleReader - Bundle to load into the SDK.\n * @param task - LoadBundleTask used to update the loading progress to public API.\n */ function yc(t, e, n) {\n    const s = b(t);\n    // eslint-disable-next-line @typescript-eslint/no-floating-promises\n        (async function(t, e, n) {\n        try {\n            const s = await e.getMetadata();\n            if (await function(t, e) {\n                const n = b(t), s = Mn(e.createTime);\n                return n.persistence.runTransaction(\"hasNewerBundle\", \"readonly\", (t => n.wo.ks(t, e.id))).then((t => !!t && t.createTime._(s) >= 0));\n            }\n            /**\n * Saves the given `BundleMetadata` to local persistence.\n */ (t.bh, s)) return await e.close(), void n.ql(function(t) {\n                return {\n                    taskState: \"Success\",\n                    documentsLoaded: t.totalDocuments,\n                    bytesLoaded: t.totalBytes,\n                    totalDocuments: t.totalDocuments,\n                    totalBytes: t.totalBytes\n                };\n            }(s));\n            n.Ul($o(s));\n            const i = new Lo(s, t.bh, e.Qt);\n            let r = await e.Ql();\n            for (;r; ) {\n                const t = await i.rl(r);\n                t && n.Ul(t), r = await e.Ql();\n            }\n            const o = await i.complete();\n            // TODO(b/160876443): This currently raises snapshots with\n            // `fromCache=false` if users already listen to some queries and bundles\n            // has newer version.\n                        await uc(t, o.Go, \n            /* remoteEvent */ void 0), \n            // Save metadata, so loading the same bundle will skip.\n            await function(t, e) {\n                const n = b(t);\n                return n.persistence.runTransaction(\"Save bundle\", \"readwrite\", (t => n.wo.Ms(t, e)));\n            }\n            /**\n * Returns a promise of a `NamedQuery` associated with given query name. Promise\n * resolves to undefined if no persisted data can be found.\n */ (t.bh, s), n.ql(o.progress);\n        } catch (t) {\n            y(\"SyncEngine\", \"Loading bundle failed with \" + t), n.Kl(t);\n        }\n    }\n    /**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n    /**\n * Provides all components needed for Firestore with in-memory persistence.\n * Uses EagerGC garbage collection.\n */)(s, e, n).then((() => {\n        s.Vl.Wa();\n    }));\n}\n\nclass gc {\n    constructor() {\n        this.synchronizeTabs = !1;\n    }\n    async initialize(t) {\n        this.Qt = jr(t.yu.t), this.Vl = this.Wl(t), this.persistence = this.jl(t), await this.persistence.start(), \n        this.Gl = this.zl(t), this.bh = this.Hl(t);\n    }\n    zl(t) {\n        return null;\n    }\n    Hl(t) {\n        return ir(this.persistence, new nr, t.Jl, this.Qt);\n    }\n    jl(t) {\n        return new pr(vr.ia, this.Qt);\n    }\n    Wl(t) {\n        return new Lr;\n    }\n    async terminate() {\n        this.Gl && this.Gl.stop(), await this.Vl.Mo(), await this.persistence.Mo();\n    }\n}\n\n/**\n * Provides all components needed for Firestore with IndexedDB persistence.\n */ class Vc extends gc {\n    constructor(t, e, n) {\n        super(), this.Yl = t, this.cacheSizeBytes = e, this.forceOwnership = n, this.synchronizeTabs = !1;\n    }\n    async initialize(t) {\n        await super.initialize(t), await Er(this.bh), await this.Yl.initialize(this, t), \n        // Enqueue writes from a previous session\n        await Pc(this.Yl._a), await Eo(this.Yl.yl);\n    }\n    Hl(t) {\n        return ir(this.persistence, new nr, t.Jl, this.Qt);\n    }\n    zl(t) {\n        const e = this.persistence.Ti.lr;\n        return new Mi(e, t._s);\n    }\n    jl(t) {\n        const e = Xi(t.yu.t, t.yu.persistenceKey), n = void 0 !== this.cacheSizeBytes ? mi.Ys(this.cacheSizeBytes) : mi.ti;\n        return new Hi(this.synchronizeTabs, e, t.clientId, n, t._s, Kr(), Wr(), this.Qt, this.Vl, !!this.forceOwnership);\n    }\n    Wl(t) {\n        return new Lr;\n    }\n}\n\n/**\n * Provides all components needed for Firestore with multi-tab IndexedDB\n * persistence.\n *\n * In the legacy client, this provider is used to provide both multi-tab and\n * non-multi-tab persistence since we cannot tell at build time whether\n * `synchronizeTabs` will be enabled.\n */ class pc extends Vc {\n    constructor(t, e) {\n        super(t, e, /* forceOwnership= */ !1), this.Yl = t, this.cacheSizeBytes = e, this.synchronizeTabs = !0;\n    }\n    async initialize(t) {\n        await super.initialize(t);\n        const e = this.Yl._a;\n        this.Vl instanceof Mr && (this.Vl._a = {\n            eu: dc.bind(null, e),\n            nu: mc.bind(null, e),\n            su: Ac.bind(null, e),\n            Uo: Ic.bind(null, e),\n            tu: fc.bind(null, e)\n        }, await this.Vl.start()), \n        // NOTE: This will immediately call the listener, so we make sure to\n        // set it after localStore / remoteStore are started.\n        await this.persistence.Ro((async t => {\n            await wc(this.Yl._a, t), this.Gl && (t && !this.Gl.Er ? this.Gl.start(this.bh) : t || this.Gl.stop());\n        }));\n    }\n    Wl(t) {\n        const e = Kr();\n        if (!Mr.Kn(e)) throw new O(F.UNIMPLEMENTED, \"IndexedDB persistence is only available on platforms that support LocalStorage.\");\n        const n = Xi(t.yu.t, t.yu.persistenceKey);\n        return new Mr(e, t._s, n, t.clientId, t.Jl);\n    }\n}\n\n/**\n * Initializes and wires the components that are needed to interface with the\n * network.\n */ class bc {\n    async initialize(t, e) {\n        this.bh || (this.bh = t.bh, this.Vl = t.Vl, this.Sh = this.Xl(e), this.yl = this.Zl(e), \n        this.gl = this.t_(e), this._a = this.e_(e, \n        /* startAsPrimary=*/ !t.synchronizeTabs), this.Vl.fa = t => Yo(this._a, t, 1 /* SharedClientState */), \n        this.yl.Dh.n_ = hc.bind(null, this._a), await Vo(this.yl, this._a.Ll));\n    }\n    t_(t) {\n        return new So;\n    }\n    Xl(t) {\n        const e = jr(t.yu.t), n = (s = t.yu, new Qr(s));\n        var s;\n        /** Return the Platform-specific connectivity monitor. */        return function(t, e, n) {\n            return new Yr(t, e, n);\n        }(t.credentials, n, e);\n    }\n    Zl(t) {\n        return e = this.bh, n = this.Sh, s = t._s, i = t => Yo(this._a, t, 0 /* RemoteStore */), \n        r = Br.Kn() ? new Br : new $r, new Zr(e, n, s, i, r);\n        var e, n, s, i, r;\n        /** Re-enables the network. Idempotent. */    }\n    e_(t, e) {\n        return function(t, e, n, \n        // PORTING NOTE: Manages state synchronization in multi-tab environments.\n        s, i, r, o) {\n            const c = new Wo(t, e, n, s, i, r);\n            return o && (c.Ml = !0), c;\n        }(this.bh, this.yl, this.gl, this.Vl, t.Jl, t.pl, e);\n    }\n    terminate() {\n        return async function(t) {\n            const e = b(t);\n            R(\"RemoteStore\", \"RemoteStore shutting down.\"), e.Nh.add(5 /* Shutdown */), await eo(e), \n            e.Oh.Mo(), \n            // Set the OnlineState to Unknown (rather than Offline) to avoid potentially\n            // triggering spurious listener events with cached data, etc.\n            e.kh.set(\"Unknown\" /* Unknown */);\n        }(this.yl);\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * How many bytes to read each time when `ReadableStreamReader.read()` is\n * called. Only applicable for byte streams that we control (e.g. those backed\n * by an UInt8Array).\n */\n/**\n * Builds a `ByteStreamReader` from a UInt8Array.\n * @param source - The data source to use.\n * @param bytesPerRead - How many bytes each `read()` from the returned reader\n *        will read.\n */\nfunction vc(t, e = 10240) {\n    let n = 0;\n    return {\n        async read() {\n            if (n < t.byteLength) {\n                const s = {\n                    value: t.slice(n, n + e),\n                    done: !1\n                };\n                return n += e, s;\n            }\n            // TypesScript's lib.dom.d.ts doesn't have proper typings of\n            // ReadableStreamReadResult yet.\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\n                        return {\n                done: !0\n            };\n        },\n        async cancel() {},\n        releaseLock() {}\n    };\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * On web, a `ReadableStream` is wrapped around by a `ByteStreamReader`.\n */\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/*\n * A wrapper implementation of Observer<T> that will dispatch events\n * asynchronously. To allow immediate silencing, a mute call is added which\n * causes events scheduled to no longer be raised.\n */\nclass Sc {\n    constructor(t) {\n        this.observer = t, \n        /**\n         * When set to true, will not raise future events. Necessary to deal with\n         * async detachment of listener.\n         */\n        this.muted = !1;\n    }\n    next(t) {\n        this.observer.next && this.s_(this.observer.next, t);\n    }\n    error(t) {\n        this.observer.error ? this.s_(this.observer.error, t) : console.error(\"Uncaught Error in snapshot listener:\", t);\n    }\n    i_() {\n        this.muted = !0;\n    }\n    s_(t, e) {\n        this.muted || setTimeout((() => {\n            this.muted || t(e);\n        }), 0);\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * A class representing a bundle.\n *\n * Takes a bundle stream or buffer, and presents abstractions to read bundled\n * elements out of the underlying content.\n */ class Dc {\n    constructor(\n    /** The reader to read from underlying binary bundle data source. */\n    t, e) {\n        this.r_ = t, this.Qt = e, \n        /** Cached bundle metadata. */\n        this.metadata = new ds, \n        /**\n         * Internal buffer to hold bundle content, accumulating incomplete element\n         * content.\n         */\n        this.buffer = new Uint8Array, this.o_ = new TextDecoder(\"utf-8\"), \n        // Read the metadata (which is the first element).\n        this.c_().then((t => {\n            t && t.sl() ? this.metadata.resolve(t.payload.metadata) : this.metadata.reject(new Error(\"The first element of the bundle is not a metadata, it is\\n             \" + JSON.stringify(null == t ? void 0 : t.payload)));\n        }), (t => this.metadata.reject(t)));\n    }\n    close() {\n        return this.r_.cancel();\n    }\n    async getMetadata() {\n        return this.metadata.promise;\n    }\n    async Ql() {\n        // Makes sure metadata is read before proceeding.\n        return await this.getMetadata(), this.c_();\n    }\n    /**\n     * Reads from the head of internal buffer, and pulling more data from\n     * underlying stream if a complete element cannot be found, until an\n     * element(including the prefixed length and the JSON string) is found.\n     *\n     * Once a complete element is read, it is dropped from internal buffer.\n     *\n     * Returns either the bundled element, or null if we have reached the end of\n     * the stream.\n     */    async c_() {\n        const t = await this.a_();\n        if (null === t) return null;\n        const e = this.o_.decode(t), n = Number(e);\n        isNaN(n) && this.u_(`length string (${e}) is not valid number`);\n        const s = await this.h_(n);\n        return new ko(JSON.parse(s), t.length + n);\n    }\n    /** First index of '{' from the underlying buffer. */    l_() {\n        return this.buffer.findIndex((t => t === \"{\".charCodeAt(0)));\n    }\n    /**\n     * Reads from the beginning of the internal buffer, until the first '{', and\n     * return the content.\n     *\n     * If reached end of the stream, returns a null.\n     */    async a_() {\n        for (;this.l_() < 0; ) {\n            if (await this.__()) break;\n        }\n        // Broke out of the loop because underlying stream is closed, and there\n        // happens to be no more data to process.\n                if (0 === this.buffer.length) return null;\n        const t = this.l_();\n        // Broke out of the loop because underlying stream is closed, but still\n        // cannot find an open bracket.\n                t < 0 && this.u_(\"Reached the end of bundle when a length string is expected.\");\n        const e = this.buffer.slice(0, t);\n        // Update the internal buffer to drop the read length.\n                return this.buffer = this.buffer.slice(t), e;\n    }\n    /**\n     * Reads from a specified position from the internal buffer, for a specified\n     * number of bytes, pulling more data from the underlying stream if needed.\n     *\n     * Returns a string decoded from the read bytes.\n     */    async h_(t) {\n        for (;this.buffer.length < t; ) {\n            await this.__() && this.u_(\"Reached the end of bundle when more is expected.\");\n        }\n        const e = this.o_.decode(this.buffer.slice(0, t));\n        // Update the internal buffer to drop the read json string.\n                return this.buffer = this.buffer.slice(t), e;\n    }\n    u_(t) {\n        // eslint-disable-next-line @typescript-eslint/no-floating-promises\n        throw this.r_.cancel(), new Error(\"Invalid bundle format: \" + t);\n    }\n    /**\n     * Pulls more data from underlying stream to internal buffer.\n     * Returns a boolean indicating whether the stream is finished.\n     */    async __() {\n        const t = await this.r_.read();\n        if (!t.done) {\n            const e = new Uint8Array(this.buffer.length + t.value.length);\n            e.set(this.buffer), e.set(t.value, this.buffer.length), this.buffer = e;\n        }\n        return t.done;\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * A `FieldPath` refers to a field in a document. The path may consist of a\n * single field name (referring to a top-level field in the document), or a\n * list of field names (referring to a nested field in the document).\n *\n * Create a `FieldPath` by providing field names. If more than one field\n * name is provided, the path will point to a nested field in a document.\n */\nclass Cc {\n    /**\n     * Creates a FieldPath from the provided field names. If more than one field\n     * name is provided, the path will point to a nested field in a document.\n     *\n     * @param fieldNames - A list of field names.\n     */\n    constructor(...t) {\n        for (let e = 0; e < t.length; ++e) if (0 === t[e].length) throw new O(F.INVALID_ARGUMENT, \"Invalid field name at argument $(i + 1). Field names must not be empty.\");\n        this.f_ = new H(t);\n    }\n    /**\n     * Returns true if this `FieldPath` is equal to the provided one.\n     *\n     * @param other - The `FieldPath` to compare against.\n     * @returns true if this `FieldPath` is equal to the provided one.\n     */    isEqual(t) {\n        return this.f_.isEqual(t.f_);\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Sentinel values that can be used when writing document fields with `set()`\n * or `update()`.\n */ class xc {\n    /**\n     * @param _methodName - The public API endpoint that returns this class.\n     */\n    constructor(t) {\n        this._methodName = t;\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * A class implemented by all API types of the legacy Firestore API which\n * contains a reference to the API type in the firestore-exp API. All internal\n * code unwraps these references, which allows us to only use firestore-exp\n * types in the SDK.\n */ class Nc {\n    constructor(t) {\n        this.d_ = t;\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ function Fc(t, e, n) {\n    if (!n) throw new O(F.INVALID_ARGUMENT, `Function ${t}() cannot be called with an empty ${e}.`);\n}\n\nfunction Oc(t, e) {\n    if (void 0 === e) return {\n        merge: !1\n    };\n    if (void 0 !== e.mergeFields && void 0 !== e.merge) throw new O(F.INVALID_ARGUMENT, `Invalid options passed to function ${t}(): You cannot specify both \"merge\" and \"mergeFields\".`);\n    return e;\n}\n\n/**\n * Validates that two boolean options are not set at the same time.\n */ function kc(t, e, n, s) {\n    if (!0 === e && !0 === s) throw new O(F.INVALID_ARGUMENT, `${t} and ${n} cannot be used together.`);\n}\n\n/**\n * Validates that `path` refers to a document (indicated by the fact it contains\n * an even numbers of segments).\n */ function Mc(t) {\n    if (!J.wt(t)) throw new O(F.INVALID_ARGUMENT, `Invalid document reference. Document references must have an even number of segments, but ${t} has ${t.length}.`);\n}\n\n/**\n * Validates that `path` refers to a collection (indicated by the fact it\n * contains an odd numbers of segments).\n */ function Lc(t) {\n    if (J.wt(t)) throw new O(F.INVALID_ARGUMENT, `Invalid collection reference. Collection references must have an odd number of segments, but ${t} has ${t.length}.`);\n}\n\n/**\n * Returns true if it's a non-null object without a custom prototype\n * (i.e. excludes Array, Date, etc.).\n */\n/** Returns a string describing the type / value of the provided input. */\nfunction $c(t) {\n    if (void 0 === t) return \"undefined\";\n    if (null === t) return \"null\";\n    if (\"string\" == typeof t) return t.length > 20 && (t = t.substring(0, 20) + \"...\"), \n    JSON.stringify(t);\n    if (\"number\" == typeof t || \"boolean\" == typeof t) return \"\" + t;\n    if (\"object\" == typeof t) {\n        if (t instanceof Array) return \"an array\";\n        {\n            const e = \n            /** Hacky method to try to get the constructor name for an object. */\n            function(t) {\n                if (t.constructor) {\n                    const e = /function\\s+([^\\s(]+)\\s*\\(/.exec(t.constructor.toString());\n                    if (e && e.length > 1) return e[1];\n                }\n                return null;\n            }\n            /**\n * Casts `obj` to `T`, optionally unwrapping Compat types to expose the\n * underlying instance. Throws if  `obj` is not an instance of `T`.\n *\n * This cast is used in the Lite and Full SDK to verify instance types for\n * arguments passed to the public API.\n */ (t);\n            return e ? `a custom ${e} object` : \"an object\";\n        }\n    }\n    return \"function\" == typeof t ? \"a function\" : V();\n}\n\nfunction Bc(t, \n// eslint-disable-next-line @typescript-eslint/no-explicit-any\ne) {\n    if (\"_delegate\" in t && (\n    // Unwrap Compat types\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    t = t.d_), !(t instanceof e)) {\n        if (e.name === t.constructor.name) throw new O(F.INVALID_ARGUMENT, \"Type does not match the expected instance. Did you pass a reference from a different Firestore SDK?\");\n        {\n            const n = $c(t);\n            throw new O(F.INVALID_ARGUMENT, `Expected type '${e.name}', but it was: ${n}`);\n        }\n    }\n    return t;\n}\n\nfunction qc(t, e) {\n    if (e <= 0) throw new O(F.INVALID_ARGUMENT, `Function ${t}() requires a positive number, but it was: ${e}.`);\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n// settings() defaults:\n/**\n * A concrete type describing all the values that can be applied via a\n * user-supplied firestore.Settings object. This is a separate type so that\n * defaults can be supplied and the value can be checked for equality.\n */\nclass Uc {\n    constructor(t) {\n        var e;\n        if (void 0 === t.host) {\n            if (void 0 !== t.ssl) throw new O(F.INVALID_ARGUMENT, \"Can't provide ssl option if host option is not set\");\n            this.host = \"firestore.googleapis.com\", this.ssl = true;\n        } else this.host = t.host, this.ssl = null === (e = t.ssl) || void 0 === e || e;\n        if (this.credentials = t.credentials, this.ignoreUndefinedProperties = !!t.ignoreUndefinedProperties, \n        void 0 === t.cacheSizeBytes) this.cacheSizeBytes = 41943040; else {\n            if (-1 !== t.cacheSizeBytes && t.cacheSizeBytes < 1048576) throw new O(F.INVALID_ARGUMENT, \"cacheSizeBytes must be at least 1048576\");\n            this.cacheSizeBytes = t.cacheSizeBytes;\n        }\n        this.experimentalForceLongPolling = !!t.experimentalForceLongPolling, this.experimentalAutoDetectLongPolling = !!t.experimentalAutoDetectLongPolling, \n        kc(\"experimentalForceLongPolling\", t.experimentalForceLongPolling, \"experimentalAutoDetectLongPolling\", t.experimentalAutoDetectLongPolling);\n    }\n    isEqual(t) {\n        return this.host === t.host && this.ssl === t.ssl && this.credentials === t.credentials && this.cacheSizeBytes === t.cacheSizeBytes && this.experimentalForceLongPolling === t.experimentalForceLongPolling && this.experimentalAutoDetectLongPolling === t.experimentalAutoDetectLongPolling && this.ignoreUndefinedProperties === t.ignoreUndefinedProperties;\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ const Qc = new Map;\n\n/**\n * An instance map that ensures only one Datastore exists per Firestore\n * instance.\n */\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * The Cloud Firestore service interface.\n *\n * Do not call this constructor directly. Instead, use {@link getFirestore}.\n */\nclass Kc {\n    /** @hideconstructor */\n    constructor(t, e) {\n        this.w_ = \"(lite)\", this.E_ = new Uc({}), this.T_ = !1, t instanceof I ? (this.I_ = t, \n        this.m_ = new $) : (this.A_ = t, this.I_ = function(t) {\n            if (!Object.prototype.hasOwnProperty.apply(t.options, [ \"projectId\" ])) throw new O(F.INVALID_ARGUMENT, '\"projectId\" not provided in firebase.initializeApp.');\n            return new I(t.options.projectId);\n        }\n        /**\n * Modify this instance to communicate with the Cloud Firestore emulator.\n *\n * Note: This must be called before this instance has been used to do any\n * operations.\n *\n * @param firestore - The Firestore instance to configure to connect to the\n * emulator.\n * @param host - the emulator host (ex: localhost).\n * @param port - the emulator port (ex: 9000).\n */ (t), this.m_ = new B(e));\n    }\n    /**\n     * The {@link FirebaseApp} associated with this `Firestore` service\n     * instance.\n     */    get app() {\n        if (!this.A_) throw new O(F.FAILED_PRECONDITION, \"Firestore was not initialized using the Firebase SDK. 'app' is not available\");\n        return this.A_;\n    }\n    get R_() {\n        return this.T_;\n    }\n    get P_() {\n        return void 0 !== this.y_;\n    }\n    g_(t) {\n        if (this.T_) throw new O(F.FAILED_PRECONDITION, \"Firestore has already been started and its settings can no longer be changed. You can only modify settings before calling any other methods on a Firestore object.\");\n        this.E_ = new Uc(t), void 0 !== t.credentials && (this.m_ = function(t) {\n            if (!t) return new $;\n            switch (t.type) {\n              case \"gapi\":\n                const e = t.client;\n                // Make sure this really is a Gapi client.\n                                return p(!(\"object\" != typeof e || null === e || !e.auth || !e.auth.getAuthHeaderValueForFirstParty)), \n                new U(e, t.sessionIndex || \"0\");\n\n              case \"provider\":\n                return t.client;\n\n              default:\n                throw new O(F.INVALID_ARGUMENT, \"makeCredentialsProvider failed due to invalid credential type\");\n            }\n        }(t.credentials));\n    }\n    V_() {\n        return this.E_;\n    }\n    p_() {\n        return this.T_ = !0, this.E_;\n    }\n    _delete() {\n        return this.y_ || (this.y_ = this.b_()), this.y_;\n    }\n    toJSON() {\n        return {\n            app: this.A_,\n            t: this.I_,\n            settings: this.E_\n        };\n    }\n    /**\n     * Terminates all components used by this client. Subclasses can override\n     * this method to clean up their own dependencies, but must also call this\n     * method.\n     *\n     * Only ever called once.\n     */    b_() {\n        /**\n * Removes all components associated with the provided instance. Must be called\n * when the `Firestore` instance is terminated.\n */\n        return function(t) {\n            const e = Qc.get(t);\n            e && (R(\"ComponentProvider\", \"Removing Datastore\"), Qc.delete(t), e.terminate());\n        }(this), Promise.resolve();\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * A `DocumentReference` refers to a document location in a Firestore database\n * and can be used to write, read, or listen to the location. The document at\n * the referenced location may or may not exist.\n */\nclass Wc {\n    /** @hideconstructor */\n    constructor(t, e, n) {\n        this.v_ = e, this.S_ = n, \n        /** The type of this Firestore reference. */\n        this.type = \"document\", this.firestore = t;\n    }\n    get D_() {\n        return this.S_.path;\n    }\n    /**\n     * The document's identifier within its collection.\n     */    get id() {\n        return this.S_.path.tt();\n    }\n    /**\n     * A string representing the path of the referenced document (relative\n     * to the root of the database).\n     */    get path() {\n        return this.S_.path.rt();\n    }\n    /**\n     * The collection this `DocumentReference` belongs to.\n     */    get parent() {\n        return new Gc(this.firestore, this.v_, this.S_.path.X());\n    }\n    /**\n     * Applies a custom data converter to this `DocumentReference`, allowing you\n     * to use your own custom model objects with Firestore. When you call {@link\n     * setDoc}, {@link getDoc}, etc. with the returned `DocumentReference`\n     * instance, the provided converter will convert between Firestore data and\n     * your custom type `U`.\n     *\n     * @param converter - Converts objects to and from Firestore.\n     * @returns A `DocumentReference<U>` that uses the provided converter.\n     */    withConverter(t) {\n        return new Wc(this.firestore, t, this.S_);\n    }\n}\n\n/**\n * A `Query` refers to a Query which you can read or listen to. You can also\n * construct refined `Query` objects by adding filters and ordering.\n */ class jc {\n    // This is the lite version of the Query class in the main SDK.\n    /** @hideconstructor protected */\n    constructor(t, e, n) {\n        this.v_ = e, this.C_ = n, \n        /** The type of this Firestore reference. */\n        this.type = \"query\", this.firestore = t;\n    }\n    /**\n     * Applies a custom data converter to this query, allowing you to use your own\n     * custom model objects with Firestore. When you call {@link getDocs} with\n     * the returned query, the provided converter will convert between Firestore\n     * data and your custom type `U`.\n     *\n     * @param converter - Converts objects to and from Firestore.\n     * @returns A `Query<U>` that uses the provided converter.\n     */    withConverter(t) {\n        return new jc(this.firestore, t, this.C_);\n    }\n}\n\n/**\n * A `CollectionReference` object can be used for adding documents, getting\n * document references, and querying for documents (using {@link query}).\n */ class Gc extends jc {\n    /** @hideconstructor */\n    constructor(t, e, n) {\n        super(t, e, ee(n)), this.firestore = t, this.D_ = n, this.type = \"collection\";\n    }\n    /** The collection's identifier. */    get id() {\n        return this.C_.path.tt();\n    }\n    /**\n     * A string representing the path of the referenced collection (relative\n     * to the root of the database).\n     */    get path() {\n        return this.C_.path.rt();\n    }\n    /**\n     * A reference to the containing `DocumentReference` if this is a\n     * subcollection. If this isn't a subcollection, the reference is null.\n     */    get parent() {\n        const t = this.D_.X();\n        return t.et() ? null : new Wc(this.firestore, \n        /* converter= */ null, new J(t));\n    }\n    /**\n     * Applies a custom data converter to this CollectionReference, allowing you\n     * to use your own custom model objects with Firestore. When you call {@link\n     * addDoc} with the returned `CollectionReference` instance, the provided\n     * converter will convert between Firestore data and your custom type `U`.\n     *\n     * @param converter - Converts objects to and from Firestore.\n     * @returns A `CollectionReference<U>` that uses the provided converter.\n     */    withConverter(t) {\n        return new Gc(this.firestore, t, this.D_);\n    }\n}\n\nfunction zc(t, e, ...n) {\n    if (t instanceof Nc && (t = t.d_), Fc(\"collection\", \"path\", e), t instanceof Kc) {\n        const s = G.ot(e, ...n);\n        return Lc(s), new Gc(t, /* converter= */ null, s);\n    }\n    {\n        if (!(t instanceof Wc || t instanceof Gc)) throw new O(F.INVALID_ARGUMENT, \"Expected first argument to collection() to be a CollectionReference, a DocumentReference or FirebaseFirestore\");\n        const s = G.ot(t.path, ...n).child(G.ot(e));\n        return Lc(s), new Gc(t.firestore, \n        /* converter= */ null, s);\n    }\n}\n\n// TODO(firestorelite): Consider using ErrorFactory -\n// https://github.com/firebase/firebase-js-sdk/blob/0131e1f/packages/util/src/errors.ts#L106\n/**\n * Creates and returns a new `Query` instance that includes all documents in the\n * database that are contained in a collection or subcollection with the\n * given `collectionId`.\n *\n * @param firestore - A reference to the root Firestore instance.\n * @param collectionId - Identifies the collections to query over. Every\n * collection or subcollection with this ID as the last segment of its path\n * will be included. Cannot contain a slash.\n * @returns The created `Query`.\n */ function Hc(t, e) {\n    if (t = Bc(t, Kc), Fc(\"collectionGroup\", \"collection id\", e), e.indexOf(\"/\") >= 0) throw new O(F.INVALID_ARGUMENT, `Invalid collection ID '${e}' passed to function collectionGroup(). Collection IDs must not contain '/'.`);\n    return new jc(t, \n    /* converter= */ null, \n    /**\n * Creates a new Query for a collection group query that matches all documents\n * within the provided collection group.\n */\n    function(t) {\n        return new Zt(G.ct(), t);\n    }(e));\n}\n\nfunction Jc(t, e, ...n) {\n    if (t instanceof Nc && (t = t.d_), \n    // We allow omission of 'pathString' but explicitly prohibit passing in both\n    // 'undefined' and 'null'.\n    1 === arguments.length && (e = S.u()), Fc(\"doc\", \"path\", e), t instanceof Kc) {\n        const s = G.ot(e, ...n);\n        return Mc(s), new Wc(t, \n        /* converter= */ null, new J(s));\n    }\n    {\n        if (!(t instanceof Wc || t instanceof Gc)) throw new O(F.INVALID_ARGUMENT, \"Expected first argument to collection() to be a CollectionReference, a DocumentReference or FirebaseFirestore\");\n        const s = t.D_.child(G.ot(e, ...n));\n        return Mc(s), new Wc(t.firestore, t instanceof Gc ? t.v_ : null, new J(s));\n    }\n}\n\n/**\n * Returns true if the provided references are equal.\n *\n * @param left - A reference to compare.\n * @param right - A reference to compare.\n * @returns true if the references point to the same location in the same\n * Firestore database.\n */ function Yc(t, e) {\n    return t instanceof Nc && (t = t.d_), e instanceof Nc && (e = e.d_), (t instanceof Wc || t instanceof Gc) && (e instanceof Wc || e instanceof Gc) && (t.firestore === e.firestore && t.path === e.path && t.v_ === e.v_);\n}\n\n/**\n * Returns true if the provided queries point to the same collection and apply\n * the same constraints.\n *\n * @param left - A `Query` to compare.\n * @param right - A `Query` to compare.\n * @returns true if the references point to the same location in the same\n * Firestore database.\n */ function Xc(t, e) {\n    return t instanceof Nc && (t = t.d_), e instanceof Nc && (e = e.d_), t instanceof jc && e instanceof jc && (t.firestore === e.firestore && he(t.C_, e.C_) && t.v_ === e.v_);\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * An immutable object representing a geographic location in Firestore. The\n * location is represented as latitude/longitude pair.\n *\n * Latitude values are in the range of [-90, 90].\n * Longitude values are in the range of [-180, 180].\n */ class Zc {\n    /**\n     * Creates a new immutable `GeoPoint` object with the provided latitude and\n     * longitude values.\n     * @param latitude - The latitude as number between -90 and 90.\n     * @param longitude - The longitude as number between -180 and 180.\n     */\n    constructor(t, e) {\n        if (!isFinite(t) || t < -90 || t > 90) throw new O(F.INVALID_ARGUMENT, \"Latitude must be a number between -90 and 90, but was: \" + t);\n        if (!isFinite(e) || e < -180 || e > 180) throw new O(F.INVALID_ARGUMENT, \"Longitude must be a number between -180 and 180, but was: \" + e);\n        this.x_ = t, this.N_ = e;\n    }\n    /**\n     * The latitude of this `GeoPoint` instance.\n     */    get latitude() {\n        return this.x_;\n    }\n    /**\n     * The longitude of this `GeoPoint` instance.\n     */    get longitude() {\n        return this.N_;\n    }\n    /**\n     * Returns true if this `GeoPoint` is equal to the provided one.\n     *\n     * @param other - The `GeoPoint` to compare against.\n     * @returns true if this `GeoPoint` is equal to the provided one.\n     */    isEqual(t) {\n        return this.x_ === t.x_ && this.N_ === t.N_;\n    }\n    toJSON() {\n        return {\n            latitude: this.x_,\n            longitude: this.N_\n        };\n    }\n    /**\n     * Actually private to JS consumers of our API, so this function is prefixed\n     * with an underscore.\n     */    U(t) {\n        return D(this.x_, t.x_) || D(this.N_, t.N_);\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ const ta = /^__.*__$/;\n\n/** The result of parsing document data (e.g. for a setData call). */ class ea {\n    constructor(t, e, n) {\n        this.data = t, this.Gt = e, this.fieldTransforms = n;\n    }\n    F_(t, e) {\n        return null !== this.Gt ? new Ke(t, this.data, this.Gt, e, this.fieldTransforms) : new Qe(t, this.data, e, this.fieldTransforms);\n    }\n}\n\n/** The result of parsing \"update\" data (i.e. for an updateData call). */ class na {\n    constructor(t, \n    // The fieldMask does not include document transforms.\n    e, n) {\n        this.data = t, this.Gt = e, this.fieldTransforms = n;\n    }\n    F_(t, e) {\n        return new Ke(t, this.data, this.Gt, e, this.fieldTransforms);\n    }\n}\n\nfunction sa(t) {\n    switch (t) {\n      case 0 /* Set */ :\n // fall through\n              case 2 /* MergeSet */ :\n // fall through\n              case 1 /* Update */ :\n        return !0;\n\n      case 3 /* Argument */ :\n      case 4 /* ArrayArgument */ :\n        return !1;\n\n      default:\n        throw V();\n    }\n}\n\n/** A \"context\" object passed around while parsing user data. */ class ia {\n    /**\n     * Initializes a ParseContext with the given source and path.\n     *\n     * @param settings - The settings for the parser.\n     * @param databaseId - The database ID of the Firestore instance.\n     * @param serializer - The serializer to use to generate the Value proto.\n     * @param ignoreUndefinedProperties - Whether to ignore undefined properties\n     * rather than throw.\n     * @param fieldTransforms - A mutable list of field transforms encountered\n     * while parsing the data.\n     * @param fieldMask - A mutable list of field paths encountered while parsing\n     * the data.\n     *\n     * TODO(b/34871131): We don't support array paths right now, so path can be\n     * null to indicate the context represents any location within an array (in\n     * which case certain features will not work and errors will be somewhat\n     * compromised).\n     */\n    constructor(t, e, n, s, i, r) {\n        this.settings = t, this.t = e, this.Qt = n, this.ignoreUndefinedProperties = s, \n        // Minor hack: If fieldTransforms is undefined, we assume this is an\n        // external call and we need to validate the entire path.\n        void 0 === i && this.O_(), this.fieldTransforms = i || [], this.Gt = r || [];\n    }\n    get path() {\n        return this.settings.path;\n    }\n    get k_() {\n        return this.settings.k_;\n    }\n    /** Returns a new context with the specified settings overwritten. */    M_(t) {\n        return new ia(Object.assign(Object.assign({}, this.settings), t), this.t, this.Qt, this.ignoreUndefinedProperties, this.fieldTransforms, this.Gt);\n    }\n    L_(t) {\n        var e;\n        const n = null === (e = this.path) || void 0 === e ? void 0 : e.child(t), s = this.M_({\n            path: n,\n            B_: !1\n        });\n        return s.q_(t), s;\n    }\n    U_(t) {\n        var e;\n        const n = null === (e = this.path) || void 0 === e ? void 0 : e.child(t), s = this.M_({\n            path: n,\n            B_: !1\n        });\n        return s.O_(), s;\n    }\n    Q_(t) {\n        // TODO(b/34871131): We don't support array paths right now; so make path\n        // undefined.\n        return this.M_({\n            path: void 0,\n            B_: !0\n        });\n    }\n    K_(t) {\n        return ga(t, this.settings.methodName, this.settings.W_ || !1, this.path, this.settings.j_);\n    }\n    /** Returns 'true' if 'fieldPath' was traversed when creating this context. */    contains(t) {\n        return void 0 !== this.Gt.find((e => t.nt(e))) || void 0 !== this.fieldTransforms.find((e => t.nt(e.field)));\n    }\n    O_() {\n        // TODO(b/34871131): Remove null check once we have proper paths for fields\n        // within arrays.\n        if (this.path) for (let t = 0; t < this.path.length; t++) this.q_(this.path.get(t));\n    }\n    q_(t) {\n        if (0 === t.length) throw this.K_(\"Document fields must not be empty\");\n        if (sa(this.k_) && ta.test(t)) throw this.K_('Document fields cannot begin and end with \"__\"');\n    }\n}\n\n/**\n * Helper for parsing raw user input (provided via the API) into internal model\n * classes.\n */ class ra {\n    constructor(t, e, n) {\n        this.t = t, this.ignoreUndefinedProperties = e, this.Qt = n || jr(t);\n    }\n    /** Creates a new top-level parse context. */    G_(t, e, n, s = !1) {\n        return new ia({\n            k_: t,\n            methodName: e,\n            j_: n,\n            path: H.ct(),\n            B_: !1,\n            W_: s\n        }, this.t, this.Qt, this.ignoreUndefinedProperties);\n    }\n}\n\nfunction oa(t) {\n    const e = t.p_(), n = jr(t.I_);\n    return new ra(t.I_, !!e.ignoreUndefinedProperties, n);\n}\n\n/** Parse document data from a set() call. */ function ca(t, e, n, s, i, r = {}) {\n    const o = t.G_(r.merge || r.mergeFields ? 2 /* MergeSet */ : 0 /* Set */ , e, n, i);\n    Aa(\"Data must be an object, but it was:\", o, s);\n    const c = Ia(s, o);\n    let a, u;\n    if (r.merge) a = new tt(o.Gt), u = o.fieldTransforms; else if (r.mergeFields) {\n        const t = [];\n        for (const s of r.mergeFields) {\n            const i = Ra(e, s, n);\n            if (!o.contains(i)) throw new O(F.INVALID_ARGUMENT, `Field '${i}' is specified in your field mask but missing from your input data.`);\n            Va(t, i) || t.push(i);\n        }\n        a = new tt(t), u = o.fieldTransforms.filter((t => a.Tt(t.field)));\n    } else a = null, u = o.fieldTransforms;\n    return new ea(new gt(c), a, u);\n}\n\nclass aa extends xc {\n    z_(t) {\n        if (2 /* MergeSet */ !== t.k_) throw 1 /* Update */ === t.k_ ? t.K_(this._methodName + \"() can only appear at the top level of your update data\") : t.K_(this._methodName + \"() cannot be used with set() unless you pass {merge:true}\");\n        // No transform to add for a delete, but we need to add it to our\n        // fieldMask so it gets deleted.\n        return t.Gt.push(t.path), null;\n    }\n    isEqual(t) {\n        return t instanceof aa;\n    }\n}\n\n/**\n * Creates a child context for parsing SerializableFieldValues.\n *\n * This is different than calling `ParseContext.contextWith` because it keeps\n * the fieldTransforms and fieldMask separate.\n *\n * The created context has its `dataSource` set to `UserDataSource.Argument`.\n * Although these values are used with writes, any elements in these FieldValues\n * are not considered writes since they cannot contain any FieldValue sentinels,\n * etc.\n *\n * @param fieldValue - The sentinel FieldValue for which to create a child\n *     context.\n * @param context - The parent context.\n * @param arrayElement - Whether or not the FieldValue has an array.\n */ function ua(t, e, n) {\n    return new ia({\n        k_: 3 /* Argument */ ,\n        j_: e.settings.j_,\n        methodName: t._methodName,\n        B_: n\n    }, e.t, e.Qt, e.ignoreUndefinedProperties);\n}\n\nclass ha extends xc {\n    z_(t) {\n        return new xe(t.path, new ge);\n    }\n    isEqual(t) {\n        return t instanceof ha;\n    }\n}\n\nclass la extends xc {\n    constructor(t, e) {\n        super(t), this.H_ = e;\n    }\n    z_(t) {\n        const e = ua(this, t, \n        /*array=*/ !0), n = this.H_.map((t => Ta(t, e))), s = new Ve(n);\n        return new xe(t.path, s);\n    }\n    isEqual(t) {\n        // TODO(mrschmidt): Implement isEquals\n        return this === t;\n    }\n}\n\nclass _a extends xc {\n    constructor(t, e) {\n        super(t), this.H_ = e;\n    }\n    z_(t) {\n        const e = ua(this, t, \n        /*array=*/ !0), n = this.H_.map((t => Ta(t, e))), s = new be(n);\n        return new xe(t.path, s);\n    }\n    isEqual(t) {\n        // TODO(mrschmidt): Implement isEquals\n        return this === t;\n    }\n}\n\nclass fa extends xc {\n    constructor(t, e) {\n        super(t), this.J_ = e;\n    }\n    z_(t) {\n        const e = new Se(t.Qt, me(t.Qt, this.J_));\n        return new xe(t.path, e);\n    }\n    isEqual(t) {\n        // TODO(mrschmidt): Implement isEquals\n        return this === t;\n    }\n}\n\n/** Parse update data from an update() call. */ function da(t, e, n, s) {\n    const i = t.G_(1 /* Update */ , e, n);\n    Aa(\"Data must be an object, but it was:\", i, s);\n    const r = [], o = new Vt;\n    X(s, ((t, s) => {\n        const c = ya(e, t, n);\n        // For Compat types, we have to \"extract\" the underlying types before\n        // performing validation.\n                s instanceof Nc && (s = s.d_);\n        const a = i.U_(c);\n        if (s instanceof aa) \n        // Add it to the field mask, but don't add anything to updateData.\n        r.push(c); else {\n            const t = Ta(s, a);\n            null != t && (r.push(c), o.set(c, t));\n        }\n    }));\n    const c = new tt(r);\n    return new na(o.Pt(), c, i.fieldTransforms);\n}\n\n/** Parse update data from a list of field/value arguments. */ function wa(t, e, n, s, i, r) {\n    const o = t.G_(1 /* Update */ , e, n), c = [ Ra(e, s, n) ], a = [ i ];\n    if (r.length % 2 != 0) throw new O(F.INVALID_ARGUMENT, `Function ${e}() needs to be called with an even number of arguments that alternate between field names and values.`);\n    for (let t = 0; t < r.length; t += 2) c.push(Ra(e, r[t])), a.push(r[t + 1]);\n    const u = [], h = new Vt;\n    // We iterate in reverse order to pick the last value for a field if the\n    // user specified the field multiple times.\n    for (let t = c.length - 1; t >= 0; --t) if (!Va(u, c[t])) {\n        const e = c[t];\n        let n = a[t];\n        // For Compat types, we have to \"extract\" the underlying types before\n        // performing validation.\n                n instanceof Nc && (n = n.d_);\n        const s = o.U_(e);\n        if (n instanceof aa) \n        // Add it to the field mask, but don't add anything to updateData.\n        u.push(e); else {\n            const t = Ta(n, s);\n            null != t && (u.push(e), h.set(e, t));\n        }\n    }\n    const l = new tt(u);\n    return new na(h.Pt(), l, o.fieldTransforms);\n}\n\n/**\n * Parse a \"query value\" (e.g. value in a where filter or a value in a cursor\n * bound).\n *\n * @param allowArrays - Whether the query value is an array that may directly\n * contain additional arrays (e.g. the operand of an `in` query).\n */ function Ea(t, e, n, s = !1) {\n    return Ta(n, t.G_(s ? 4 /* ArrayArgument */ : 3 /* Argument */ , e));\n}\n\n/**\n * Parses user data to Protobuf Values.\n *\n * @param input - Data to be parsed.\n * @param context - A context object representing the current path being parsed,\n * the source of the data being parsed, etc.\n * @returns The parsed value, or null if the value was a FieldValue sentinel\n * that should not be included in the resulting parsed data.\n */ function Ta(t, e) {\n    if (\n    // Unwrap the API type from the Compat SDK. This will return the API type\n    // from firestore-exp.\n    t instanceof Nc && (t = t.d_), ma(t)) return Aa(\"Unsupported field value:\", e, t), \n    Ia(t, e);\n    if (t instanceof xc) \n    // FieldValues usually parse into transforms (except FieldValue.delete())\n    // in which case we do not want to include this field in our parsed data\n    // (as doing so will overwrite the field directly prior to the transform\n    // trying to transform it). So we don't add this location to\n    // context.fieldMask and we return null as our parsing result.\n    /**\n * \"Parses\" the provided FieldValueImpl, adding any necessary transforms to\n * context.fieldTransforms.\n */\n    return function(t, e) {\n        // Sentinels are only supported with writes, and not within arrays.\n        if (!sa(e.k_)) throw e.K_(t._methodName + \"() can only be used with update() and set()\");\n        if (!e.path) throw e.K_(t._methodName + \"() is not currently supported inside arrays\");\n        const n = t.z_(e);\n        n && e.fieldTransforms.push(n);\n    }\n    /**\n * Helper to parse a scalar value (i.e. not an Object, Array, or FieldValue)\n *\n * @returns The parsed value\n */ (t, e), null;\n    if (void 0 === t && e.ignoreUndefinedProperties) \n    // If the input is undefined it can never participate in the fieldMask, so\n    // don't handle this below. If `ignoreUndefinedProperties` is false,\n    // `parseScalarValue` will reject an undefined value.\n    return null;\n    if (\n    // If context.path is null we are inside an array and we don't support\n    // field mask paths more granular than the top-level array.\n    e.path && e.Gt.push(e.path), t instanceof Array) {\n        // TODO(b/34871131): Include the path containing the array in the error\n        // message.\n        // In the case of IN queries, the parsed data is an array (representing\n        // the set of values to be included for the IN query) that may directly\n        // contain additional arrays (each representing an individual field\n        // value), so we disable this validation.\n        if (e.settings.B_ && 4 /* ArrayArgument */ !== e.k_) throw e.K_(\"Nested arrays are not supported\");\n        return function(t, e) {\n            const n = [];\n            let s = 0;\n            for (const i of t) {\n                let t = Ta(i, e.Q_(s));\n                null == t && (\n                // Just include nulls in the array for fields being replaced with a\n                // sentinel.\n                t = {\n                    nullValue: \"NULL_VALUE\"\n                }), n.push(t), s++;\n            }\n            return {\n                arrayValue: {\n                    values: n\n                }\n            };\n        }(t, e);\n    }\n    return function(t, e) {\n        t instanceof Nc && (t = t.d_);\n        if (null === t) return {\n            nullValue: \"NULL_VALUE\"\n        };\n        if (\"number\" == typeof t) return me(e.Qt, t);\n        if (\"boolean\" == typeof t) return {\n            booleanValue: t\n        };\n        if (\"string\" == typeof t) return {\n            stringValue: t\n        };\n        if (t instanceof Date) {\n            const n = K.fromDate(t);\n            return {\n                timestampValue: Fn(e.Qt, n)\n            };\n        }\n        if (t instanceof K) {\n            // Firestore backend truncates precision down to microseconds. To ensure\n            // offline mode works the same with regards to truncation, perform the\n            // truncation immediately without waiting for the backend to do that.\n            const n = new K(t.seconds, 1e3 * Math.floor(t.nanoseconds / 1e3));\n            return {\n                timestampValue: Fn(e.Qt, n)\n            };\n        }\n        if (t instanceof Zc) return {\n            geoPointValue: {\n                latitude: t.latitude,\n                longitude: t.longitude\n            }\n        };\n        if (t instanceof k) return {\n            bytesValue: On(e.Qt, t.I)\n        };\n        if (t instanceof Wc) {\n            const n = e.t, s = t.firestore.I_;\n            if (!s.isEqual(n)) throw e.K_(`Document reference is for database ${s.projectId}/${s.database} but should be for database ${n.projectId}/${n.database}`);\n            return {\n                referenceValue: Ln(t.firestore.I_ || e.t, t.S_.path)\n            };\n        }\n        throw e.K_(\"Unsupported field value: \" + $c(t));\n    }\n    /**\n * Checks whether an object looks like a JSON object that should be converted\n * into a struct. Normal class/prototype instances are considered to look like\n * JSON objects since they should be converted to a struct value. Arrays, Dates,\n * GeoPoints, etc. are not considered to look like JSON objects since they map\n * to specific FieldValue types other than ObjectValue.\n */ (t, e);\n}\n\nfunction Ia(t, e) {\n    const n = {};\n    return Z(t) ? \n    // If we encounter an empty object, we explicitly add it to the update\n    // mask to ensure that the server creates a map entry.\n    e.path && e.path.length > 0 && e.Gt.push(e.path) : X(t, ((t, s) => {\n        const i = Ta(s, e.L_(t));\n        null != i && (n[t] = i);\n    })), {\n        mapValue: {\n            fields: n\n        }\n    };\n}\n\nfunction ma(t) {\n    return !(\"object\" != typeof t || null === t || t instanceof Array || t instanceof Date || t instanceof K || t instanceof Zc || t instanceof k || t instanceof Wc || t instanceof xc);\n}\n\nfunction Aa(t, e, n) {\n    if (!ma(n) || !function(t) {\n        return \"object\" == typeof t && null !== t && (Object.getPrototypeOf(t) === Object.prototype || null === Object.getPrototypeOf(t));\n    }(n)) {\n        const s = $c(n);\n        throw \"an object\" === s ? e.K_(t + \" a custom object\") : e.K_(t + \" \" + s);\n    }\n}\n\n/**\n * Helper that calls fromDotSeparatedString() but wraps any error thrown.\n */ function Ra(t, e, n) {\n    if (\n    // If required, replace the FieldPath Compat class with with the firestore-exp\n    // FieldPath.\n    e instanceof Nc && (e = e.d_), e instanceof Cc) return e.f_;\n    if (\"string\" == typeof e) return ya(t, e);\n    throw ga(\"Field path arguments must be of type string or FieldPath.\", t, \n    /* hasConverter= */ !1, \n    /* path= */ void 0, n);\n}\n\n/**\n * Matches any characters in a field path string that are reserved.\n */ const Pa = new RegExp(\"[~\\\\*/\\\\[\\\\]]\");\n\n/**\n * Wraps fromDotSeparatedString with an error message about the method that\n * was thrown.\n * @param methodName - The publicly visible method name\n * @param path - The dot-separated string form of a field path which will be\n * split on dots.\n * @param targetDoc - The document against which the field path will be\n * evaluated.\n */ function ya(t, e, n) {\n    if (e.search(Pa) >= 0) throw ga(`Invalid field path (${e}). Paths must not contain '~', '*', '/', '[', or ']'`, t, \n    /* hasConverter= */ !1, \n    /* path= */ void 0, n);\n    try {\n        return new Cc(...e.split(\".\")).f_;\n    } catch (s) {\n        throw ga(`Invalid field path (${e}). Paths must not be empty, begin with '.', end with '.', or contain '..'`, t, \n        /* hasConverter= */ !1, \n        /* path= */ void 0, n);\n    }\n}\n\nfunction ga(t, e, n, s, i) {\n    const r = s && !s.et(), o = void 0 !== i;\n    let c = `Function ${e}() called with invalid data`;\n    n && (c += \" (via `toFirestore()`)\"), c += \". \";\n    let a = \"\";\n    return (r || o) && (a += \" (found\", r && (a += \" in field \" + s), o && (a += \" in document \" + i), \n    a += \")\"), new O(F.INVALID_ARGUMENT, c + t + a);\n}\n\n/** Checks `haystack` if FieldPath `needle` is present. Runs in O(n). */ function Va(t, e) {\n    return t.some((t => t.isEqual(e)));\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Internal transaction object responsible for accumulating the mutations to\n * perform and the base versions for any documents read.\n */ class pa {\n    constructor(t) {\n        this.Sh = t, \n        // The version of each document that was read during this transaction.\n        this.Y_ = new Map, this.mutations = [], this.X_ = !1, \n        /**\n         * A deferred usage error that occurred previously in this transaction that\n         * will cause the transaction to fail once it actually commits.\n         */\n        this.Z_ = null, \n        /**\n         * Set of documents that have been written in the transaction.\n         *\n         * When there's more than one write to the same key in a transaction, any\n         * writes after the first are handled differently.\n         */\n        this.tf = new Set;\n    }\n    async ef(t) {\n        if (this.nf(), this.mutations.length > 0) throw new O(F.INVALID_ARGUMENT, \"Firestore transactions require all reads to be executed before all writes.\");\n        const e = await async function(t, e) {\n            const n = b(t), s = Kn(n.Qt) + \"/documents\", i = {\n                documents: e.map((t => Bn(n.Qt, t)))\n            }, r = await n.Du(\"BatchGetDocuments\", s, i), o = new Map;\n            r.forEach((t => {\n                const e = zn(n.Qt, t);\n                o.set(e.key.toString(), e);\n            }));\n            const c = [];\n            return e.forEach((t => {\n                const e = o.get(t.toString());\n                p(!!e), c.push(e);\n            })), c;\n        }(this.Sh, t);\n        return e.forEach((t => {\n            t instanceof St || t instanceof vt ? this.sf(t) : V();\n        })), e;\n    }\n    set(t, e) {\n        this.write(e.F_(t, this.jt(t))), this.tf.add(t.toString());\n    }\n    update(t, e) {\n        try {\n            this.write(e.F_(t, this.rf(t)));\n        } catch (t) {\n            this.Z_ = t;\n        }\n        this.tf.add(t.toString());\n    }\n    delete(t) {\n        this.write(new He(t, this.jt(t))), this.tf.add(t.toString());\n    }\n    async commit() {\n        if (this.nf(), this.Z_) throw this.Z_;\n        const t = this.Y_;\n        // For each mutation, note that the doc was written.\n                this.mutations.forEach((e => {\n            t.delete(e.key.toString());\n        })), \n        // For each document that was read but not written to, we want to perform\n        // a `verify` operation.\n        t.forEach(((t, e) => {\n            const n = J._t(e);\n            this.mutations.push(new Je(n, this.jt(n)));\n        })), await async function(t, e) {\n            const n = b(t), s = Kn(n.Qt) + \"/documents\", i = {\n                writes: e.map((t => Jn(n.Qt, t)))\n            };\n            await n.pu(\"Commit\", s, i);\n        }(this.Sh, this.mutations), this.X_ = !0;\n    }\n    sf(t) {\n        let e;\n        if (t instanceof vt) e = t.version; else {\n            if (!(t instanceof St)) throw V();\n            // For deleted docs, we must use baseVersion 0 when we overwrite them.\n            e = W.min();\n        }\n        const n = this.Y_.get(t.key.toString());\n        if (n) {\n            if (!e.isEqual(n)) \n            // This transaction will fail no matter what.\n            throw new O(F.ABORTED, \"Document version changed between two reads.\");\n        } else this.Y_.set(t.key.toString(), e);\n    }\n    /**\n     * Returns the version of this document when it was read in this transaction,\n     * as a precondition, or no precondition if it was not read.\n     */    jt(t) {\n        const e = this.Y_.get(t.toString());\n        return !this.tf.has(t.toString()) && e ? Oe.updateTime(e) : Oe.Kt();\n    }\n    /**\n     * Returns the precondition for a document if the operation is an update.\n     */    rf(t) {\n        const e = this.Y_.get(t.toString());\n        // The first time a document is written, we want to take into account the\n        // read time and existence\n                if (!this.tf.has(t.toString()) && e) {\n            if (e.isEqual(W.min())) \n            // The document doesn't exist, so fail the transaction.\n            // This has to be validated locally because you can't send a\n            // precondition that a document does not exist without changing the\n            // semantics of the backend write to be an insert. This is the reverse\n            // of what we want, since we want to assert that the document doesn't\n            // exist but then send the update and have it fail. Since we can't\n            // express that to the backend, we have to validate locally.\n            // Note: this can change once we can send separate verify writes in the\n            // transaction.\n            throw new O(F.INVALID_ARGUMENT, \"Can't update a document that doesn't exist.\");\n            // Document exists, base precondition on document update time.\n                        return Oe.updateTime(e);\n        }\n        // Document was not read, so we just use the preconditions for a blind\n        // update.\n        return Oe.exists(!0);\n    }\n    write(t) {\n        this.nf(), this.mutations.push(t);\n    }\n    nf() {}\n}\n\n/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * TransactionRunner encapsulates the logic needed to run and retry transactions\n * with backoff.\n */\nclass ba {\n    constructor(t, e, n, s) {\n        this._s = t, this.Sh = e, this.updateFunction = n, this.Es = s, this.cf = 5, this.Gu = new Gr(this._s, \"transaction_retry\" /* TransactionRetry */);\n    }\n    /** Runs the transaction and sets the result on deferred. */    run() {\n        this.af();\n    }\n    af() {\n        this.Gu.$u((async () => {\n            const t = new pa(this.Sh), e = this.uf(t);\n            e && e.then((e => {\n                this._s.Ps((() => t.commit().then((() => {\n                    this.Es.resolve(e);\n                })).catch((t => {\n                    this.hf(t);\n                }))));\n            })).catch((t => {\n                this.hf(t);\n            }));\n        }));\n    }\n    uf(t) {\n        try {\n            const e = this.updateFunction(t);\n            return !at(e) && e.catch && e.then ? e : (this.Es.reject(Error(\"Transaction callback must return a Promise\")), \n            null);\n        } catch (t) {\n            // Do not retry errors thrown by user provided updateFunction.\n            return this.Es.reject(t), null;\n        }\n    }\n    hf(t) {\n        this.cf > 0 && this.lf(t) ? (this.cf -= 1, this._s.Ps((() => (this.af(), Promise.resolve())))) : this.Es.reject(t);\n    }\n    lf(t) {\n        if (\"FirebaseError\" === t.name) {\n            // In transactions, the backend will fail outdated reads with FAILED_PRECONDITION and\n            // non-matching document versions with ABORTED. These errors should be retried.\n            const e = t.code;\n            return \"aborted\" === e || \"failed-precondition\" === e || !tn(e);\n        }\n        return !1;\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * FirestoreClient is a top-level class that constructs and owns all of the\n * pieces of the client SDK architecture. It is responsible for creating the\n * async queue that is shared by all of the other components in the system.\n */\nclass va {\n    constructor(t, \n    /**\n     * Asynchronous queue responsible for all of our internal processing. When\n     * we get incoming work from the user (via public API) or the network\n     * (incoming GRPC messages), we should always schedule onto this queue.\n     * This ensures all of our work is properly serialized (e.g. we don't\n     * start processing a new operation while the previous one is waiting for\n     * an async I/O to complete).\n     */\n    e, n) {\n        this.credentials = t, this._s = e, this.yu = n, this.user = M.UNAUTHENTICATED, this.clientId = S.u(), \n        this._f = () => {}, this.C = new ds, this.credentials.v((t => {\n            R(\"FirestoreClient\", \"Received user=\", t.uid), this.user = t, this._f(t), this.C.resolve();\n        }));\n    }\n    async getConfiguration() {\n        return await this.C.promise, {\n            _s: this._s,\n            yu: this.yu,\n            clientId: this.clientId,\n            credentials: this.credentials,\n            Jl: this.user,\n            pl: 100\n        };\n    }\n    ff(t) {\n        this._f = t, \n        // eslint-disable-next-line @typescript-eslint/no-floating-promises\n        this.C.promise.then((() => this._f(this.user)));\n    }\n    /**\n     * Checks that the client has not been terminated. Ensures that other methods on\n     * this class cannot be called after the client is terminated.\n     */    df() {\n        if (this._s.wf) throw new O(F.FAILED_PRECONDITION, \"The client has already been terminated.\");\n    }\n    terminate() {\n        this._s.Ef();\n        const t = new ds;\n        return this._s.Tf((async () => {\n            try {\n                this.If && await this.If.terminate(), this.mf && await this.mf.terminate(), \n                // `removeChangeListener` must be called after shutting down the\n                // RemoteStore as it will prevent the RemoteStore from retrieving\n                // auth tokens.\n                this.credentials.S(), t.resolve();\n            } catch (e) {\n                const n = ps(e, \"Failed to shutdown persistence\");\n                t.reject(n);\n            }\n        })), t.promise;\n    }\n}\n\nasync function Sa(t, e) {\n    t._s.Af(), R(\"FirestoreClient\", \"Initializing OfflineComponentProvider\");\n    const n = await t.getConfiguration();\n    await e.initialize(n);\n    let s = n.Jl;\n    t.ff((n => {\n        s.isEqual(n) || (s = n, t._s.po((async () => {\n            await rr(e.bh, n);\n        })));\n    })), \n    // When a user calls clearPersistence() in one client, all other clients\n    // need to be terminated to allow the delete to succeed.\n    e.persistence.Po((() => t.terminate())), t.mf = e;\n}\n\nasync function Da(t, e) {\n    t._s.Af();\n    const n = await Ca(t);\n    R(\"FirestoreClient\", \"Initializing OnlineComponentProvider\");\n    const s = await t.getConfiguration();\n    await e.initialize(n, s), \n    // The CredentialChangeListener of the online component provider takes\n    // precedence over the offline component provider.\n    t.ff((n => t._s.po((() => async function(t, e) {\n        const n = b(t);\n        n._s.Af(), R(\"RemoteStore\", \"RemoteStore received new credentials\");\n        const s = ao(n);\n        // Tear down and re-create our network streams. This will ensure we get a\n        // fresh auth token for the new user and re-fill the write pipeline with\n        // new mutations from the LocalStore (since mutations are per-user).\n                n.Nh.add(3 /* CredentialChange */), await eo(n), s && \n        // Don't set the network status to Unknown if we are offline.\n        n.kh.set(\"Unknown\" /* Unknown */), await n.Dh.n_(e), n.Nh.delete(3 /* CredentialChange */), \n        await to(n);\n    }(e.yl, n))))), t.If = e;\n}\n\nasync function Ca(t) {\n    return t.mf || (R(\"FirestoreClient\", \"Using default OfflineComponentProvider\"), \n    await Sa(t, new gc)), t.mf;\n}\n\nasync function xa(t) {\n    return t.If || (R(\"FirestoreClient\", \"Using default OnlineComponentProvider\"), await Da(t, new bc)), \n    t.If;\n}\n\nfunction Na(t) {\n    return Ca(t).then((t => t.persistence));\n}\n\nfunction Fa(t) {\n    return Ca(t).then((t => t.bh));\n}\n\nfunction Oa(t) {\n    return xa(t).then((t => t.yl));\n}\n\nfunction ka(t) {\n    return xa(t).then((t => t._a));\n}\n\nasync function Ma(t) {\n    const e = await xa(t), n = e.gl;\n    return n.jh = jo.bind(null, e._a), n.Hh = zo.bind(null, e._a), n;\n}\n\n/** Enables the network connection and re-enqueues all pending operations. */ function La(t) {\n    return t._s.enqueue((async () => {\n        const e = await Na(t), n = await Oa(t);\n        return e.yo(!0), function(t) {\n            const e = b(t);\n            return e.Nh.delete(0 /* UserDisabled */), to(e);\n        }(n);\n    }));\n}\n\n/** Disables the network connection. Pending operations will not complete. */ function $a(t) {\n    return t._s.enqueue((async () => {\n        const e = await Na(t), n = await Oa(t);\n        return e.yo(!1), async function(t) {\n            const e = b(t);\n            e.Nh.add(0 /* UserDisabled */), await eo(e), \n            // Set the OnlineState to Offline so get()s return from cache, etc.\n            e.kh.set(\"Offline\" /* Offline */);\n        }(n);\n    }));\n}\n\n/**\n * Returns a Promise that resolves when all writes that were pending at the time\n * this method was called received server acknowledgement. An acknowledgement\n * can be either acceptance or rejection.\n */ function Ba(t, e) {\n    const n = new ds;\n    return t._s.Ps((async () => async function(t, e, n) {\n        try {\n            const s = await function(t, e) {\n                const n = b(t);\n                return n.persistence.runTransaction(\"read document\", \"readonly\", (t => n.Tc.Ho(t, e)));\n            }(t, e);\n            s instanceof vt ? n.resolve(s) : s instanceof St ? n.resolve(null) : n.reject(new O(F.UNAVAILABLE, \"Failed to get document from cache. (However, this document may exist on the server. Run again without setting 'source' in the GetOptions to attempt to retrieve the document from the server.)\"));\n        } catch (t) {\n            const s = ps(t, `Failed to get document '${e} from cache`);\n            n.reject(s);\n        }\n    }\n    /**\n * Retrieves a latency-compensated document from the backend via a\n * SnapshotListener.\n */ (await Fa(t), e, n))), n.promise;\n}\n\nfunction qa(t, e, n = {}) {\n    const s = new ds;\n    return t._s.Ps((async () => function(t, e, n, s, i) {\n        const r = new Sc({\n            next: r => {\n                // Remove query first before passing event to user to avoid\n                // user actions affecting the now stale query.\n                e.Ps((() => Co(t, o)));\n                const c = r.docs.has(n);\n                !c && r.fromCache ? \n                // TODO(dimond): If we're online and the document doesn't\n                // exist then we resolve with a doc.exists set to false. If\n                // we're offline however, we reject the Promise in this\n                // case. Two options: 1) Cache the negative response from\n                // the server so we can deliver that even when you're\n                // offline 2) Actually reject the Promise in the online case\n                // if the document doesn't exist.\n                i.reject(new O(F.UNAVAILABLE, \"Failed to get document because the client is offline.\")) : c && r.fromCache && s && \"server\" === s.source ? i.reject(new O(F.UNAVAILABLE, 'Failed to get document from server. (However, this document does exist in the local cache. Run again without setting source to \"server\" to retrieve the cached document.)')) : i.resolve(r);\n            },\n            error: t => i.reject(t)\n        }), o = new Oo(ee(n.path), r, {\n            includeMetadataChanges: !0,\n            nl: !0\n        });\n        return Do(t, o);\n    }(await Ma(t), t._s, e, n, s))), s.promise;\n}\n\nfunction Ua(t, e) {\n    const n = new ds;\n    return t._s.Ps((async () => async function(t, e, n) {\n        try {\n            const s = await fr(t, e, \n            /* usePreviousResults= */ !0), i = new Uo(e, s.Rc), r = i.fl(s.documents), o = i.wi(r, \n            /* updateLimboDocuments= */ !1);\n            n.resolve(o.snapshot);\n        } catch (t) {\n            const s = ps(t, `Failed to execute query '${e} against cache`);\n            n.reject(s);\n        }\n    }\n    /**\n * Retrieves a latency-compensated query snapshot from the backend via a\n * SnapshotListener.\n */ (await Fa(t), e, n))), n.promise;\n}\n\nfunction Qa(t, e, n = {}) {\n    const s = new ds;\n    return t._s.Ps((async () => function(t, e, n, s, i) {\n        const r = new Sc({\n            next: n => {\n                // Remove query first before passing event to user to avoid\n                // user actions affecting the now stale query.\n                e.Ps((() => Co(t, o))), n.fromCache && \"server\" === s.source ? i.reject(new O(F.UNAVAILABLE, 'Failed to get documents from server. (However, these documents may exist in the local cache. Run again without setting source to \"server\" to retrieve the cached documents.)')) : i.resolve(n);\n            },\n            error: t => i.reject(t)\n        }), o = new Oo(n, r, {\n            includeMetadataChanges: !0,\n            nl: !0\n        });\n        return Do(t, o);\n    }(await Ma(t), t._s, e, n, s))), s.promise;\n}\n\nfunction Ka(t, e) {\n    const n = new Sc(e);\n    return t._s.Ps((async () => function(t, e) {\n        b(t).Wh.add(e), \n        // Immediately fire an initial event, indicating all existing listeners\n        // are in-sync.\n        e.next();\n    }(await Ma(t), n))), () => {\n        n.i_(), t._s.Ps((async () => function(t, e) {\n            b(t).Wh.delete(e);\n        }(await Ma(t), n)));\n    };\n}\n\n/**\n * Takes an updateFunction in which a set of reads and writes can be performed\n * atomically. In the updateFunction, the client can read and write values\n * using the supplied transaction object. After the updateFunction, all\n * changes will be committed. If a retryable error occurs (ex: some other\n * client has changed any of the data referenced), then the updateFunction\n * will be called again after a backoff. If the updateFunction still fails\n * after all retries, then the transaction will be rejected.\n *\n * The transaction object passed to the updateFunction contains methods for\n * accessing documents and collections. Unlike other datastore access, data\n * accessed with the transaction will not reflect local changes that have not\n * been committed. For this reason, it is required that all reads are\n * performed before any writes. Transactions must be performed while online.\n */ function Wa(t, e) {\n    const n = new ds;\n    return t._s.Ps((async () => {\n        const s = await function(t) {\n            return xa(t).then((t => t.Sh));\n        }(t);\n        new ba(t._s, s, e, n).run();\n    })), n.promise;\n}\n\nfunction ja(t, e, n, s) {\n    const i = function(t, e) {\n        let n;\n        n = \"string\" == typeof t ? (new TextEncoder).encode(t) : t;\n        return function(t, e) {\n            return new Dc(t, e);\n        }(function(t, e) {\n            if (t instanceof Uint8Array) return vc(t, e);\n            if (t instanceof ArrayBuffer) return vc(new Uint8Array(t), e);\n            if (t instanceof ReadableStream) return t.getReader();\n            throw new Error(\"Source of `toByteStreamReader` has to be a ArrayBuffer or ReadableStream\");\n        }(n), e);\n    }\n    /**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ (n, jr(e));\n    t._s.Ps((async () => {\n        yc(await ka(t), i, s);\n    }));\n}\n\nfunction Ga(t, e) {\n    return t._s.enqueue((async () => function(t, e) {\n        const n = b(t);\n        return n.persistence.runTransaction(\"Get named query\", \"readonly\", (t => n.wo.Ls(t, e)));\n    }(await Fa(t), e)));\n}\n\nclass za {\n    constructor() {\n        // The last promise in the queue.\n        this.Rf = Promise.resolve(), \n        // A list of retryable operations. Retryable operations are run in order and\n        // retried with backoff.\n        this.Pf = [], \n        // Is this AsyncQueue being shut down? Once it is set to true, it will not\n        // be changed again.\n        this.yf = !1, \n        // Operations scheduled to be queued in the future. Operations are\n        // automatically removed after they are run or canceled.\n        this.gf = [], \n        // visible for testing\n        this.Vf = null, \n        // Flag set while there's an outstanding AsyncQueue operation, used for\n        // assertion sanity-checks.\n        this.pf = !1, \n        // List of TimerIds to fast-forward delays for.\n        this.bf = [], \n        // Backoff timer used to schedule retries for retryable operations\n        this.Gu = new Gr(this, \"async_queue_retry\" /* AsyncQueueRetry */), \n        // Visibility handler that triggers an immediate retry of all retryable\n        // operations. Meant to speed up recovery when we regain file system access\n        // after page comes into foreground.\n        this.vf = () => {\n            const t = Wr();\n            t && R(\"AsyncQueue\", \"Visibility state changed to \" + t.visibilityState), this.Gu.qu();\n        };\n        const t = Wr();\n        t && \"function\" == typeof t.addEventListener && t.addEventListener(\"visibilitychange\", this.vf);\n    }\n    get wf() {\n        return this.yf;\n    }\n    /**\n     * Adds a new operation to the queue without waiting for it to complete (i.e.\n     * we ignore the Promise result).\n     */    Ps(t) {\n        // eslint-disable-next-line @typescript-eslint/no-floating-promises\n        this.enqueue(t);\n    }\n    Tf(t) {\n        this.Sf(), \n        // eslint-disable-next-line @typescript-eslint/no-floating-promises\n        this.Df(t);\n    }\n    Ef() {\n        if (!this.yf) {\n            this.yf = !0;\n            const t = Wr();\n            t && \"function\" == typeof t.removeEventListener && t.removeEventListener(\"visibilitychange\", this.vf);\n        }\n    }\n    enqueue(t) {\n        return this.Sf(), this.yf ? new Promise((t => {})) : this.Df(t);\n    }\n    po(t) {\n        this.Ps((() => (this.Pf.push(t), this.Cf())));\n    }\n    /**\n     * Runs the next operation from the retryable queue. If the operation fails,\n     * reschedules with backoff.\n     */    async Cf() {\n        if (0 !== this.Pf.length) {\n            try {\n                await this.Pf[0](), this.Pf.shift(), this.Gu.reset();\n            } catch (t) {\n                if (!As(t)) throw t;\n // Failure will be handled by AsyncQueue\n                                R(\"AsyncQueue\", \"Operation failed with retryable error: \" + t);\n            }\n            this.Pf.length > 0 && \n            // If there are additional operations, we re-schedule `retryNextOp()`.\n            // This is necessary to run retryable operations that failed during\n            // their initial attempt since we don't know whether they are already\n            // enqueued. If, for example, `op1`, `op2`, `op3` are enqueued and `op1`\n            // needs to  be re-run, we will run `op1`, `op1`, `op2` using the\n            // already enqueued calls to `retryNextOp()`. `op3()` will then run in the\n            // call scheduled here.\n            // Since `backoffAndRun()` cancels an existing backoff and schedules a\n            // new backoff on every call, there is only ever a single additional\n            // operation in the queue.\n            this.Gu.$u((() => this.Cf()));\n        }\n    }\n    Df(t) {\n        const e = this.Rf.then((() => (this.pf = !0, t().catch((t => {\n            this.Vf = t, this.pf = !1;\n            // Re-throw the error so that this.tail becomes a rejected Promise and\n            // all further attempts to chain (via .then) will just short-circuit\n            // and return the rejected Promise.\n            throw P(\"INTERNAL UNHANDLED ERROR: \", \n            /**\n * Chrome includes Error.message in Error.stack. Other browsers do not.\n * This returns expected output of message + stack when available.\n * @param error - Error or FirestoreError\n */\n            function(t) {\n                let e = t.message || \"\";\n                t.stack && (e = t.stack.includes(t.message) ? t.stack : t.message + \"\\n\" + t.stack);\n                return e;\n            }\n            /**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ (t)), t;\n        })).then((t => (this.pf = !1, t))))));\n        return this.Rf = e, e;\n    }\n    Tr(t, e, n) {\n        this.Sf(), \n        // Fast-forward delays for timerIds that have been overriden.\n        this.bf.indexOf(t) > -1 && (e = 0);\n        const s = Vs.Ts(this, t, e, n, (t => this.xf(t)));\n        return this.gf.push(s), s;\n    }\n    Sf() {\n        this.Vf && V();\n    }\n    Af() {}\n    /**\n     * Waits until all currently queued tasks are finished executing. Delayed\n     * operations are not run.\n     */    async Nf() {\n        // Operations in the queue prior to draining may have enqueued additional\n        // operations. Keep draining the queue until the tail is no longer advanced,\n        // which indicates that no more new operations were enqueued and that all\n        // operations were executed.\n        let t;\n        do {\n            t = this.Rf, await t;\n        } while (t !== this.Rf);\n    }\n    /**\n     * For Tests: Determine if a delayed operation with a particular TimerId\n     * exists.\n     */    Ff(t) {\n        for (const e of this.gf) if (e.fs === t) return !0;\n        return !1;\n    }\n    /**\n     * For Tests: Runs some or all delayed operations early.\n     *\n     * @param lastTimerId - Delayed operations up to and including this TimerId\n     * will be drained. Pass TimerId.All to run all delayed operations.\n     * @returns a Promise that resolves once all operations have been run.\n     */    Of(t) {\n        // Note that draining may generate more delayed ops, so we do that first.\n        return this.Nf().then((() => {\n            // Run ops in the same order they'd run if they ran naturally.\n            this.gf.sort(((t, e) => t.ds - e.ds));\n            for (const e of this.gf) if (e.Rs(), \"all\" /* All */ !== t && e.fs === t) break;\n            return this.Nf();\n        }));\n    }\n    /**\n     * For Tests: Skip all subsequent delays for a timer id.\n     */    kf(t) {\n        this.bf.push(t);\n    }\n    /** Called once a DelayedOperation is run or canceled. */    xf(t) {\n        // NOTE: indexOf / slice are O(n), but delayedOperations is expected to be small.\n        const e = this.gf.indexOf(t);\n        this.gf.splice(e, 1);\n    }\n}\n\nfunction Ha(t) {\n    /**\n * Returns true if obj is an object and contains at least one of the specified\n * methods.\n */\n    return function(t, e) {\n        if (\"object\" != typeof t || null === t) return !1;\n        const n = t;\n        for (const t of e) if (t in n && \"function\" == typeof n[t]) return !0;\n        return !1;\n    }\n    /**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n    /**\n * Represents the task of loading a Firestore bundle. It provides progress of bundle\n * loading, as well as task completion and error events.\n *\n * The API is compatible with `Promise<LoadBundleTaskProgress>`.\n */ (t, [ \"next\", \"error\", \"complete\" ]);\n}\n\nclass Ja {\n    constructor() {\n        this.Mf = {}, this.Lf = new ds, this.$f = {\n            taskState: \"Running\",\n            totalBytes: 0,\n            totalDocuments: 0,\n            bytesLoaded: 0,\n            documentsLoaded: 0\n        };\n    }\n    /**\n     * Registers functions to listen to bundle loading progress events.\n     * @param next - Called when there is a progress update from bundle loading. Typically `next` calls occur\n     *   each time a Firestore document is loaded from the bundle.\n     * @param error - Called when an error occurs during bundle loading. The task aborts after reporting the\n     *   error, and there should be no more updates after this.\n     * @param complete - Called when the loading task is complete.\n     */    onProgress(t, e, n) {\n        this.Mf = {\n            next: t,\n            error: e,\n            complete: n\n        };\n    }\n    /**\n     * Implements the `Promise<LoadBundleTaskProgress>.catch` interface.\n     *\n     * @param onRejected - Called when an error occurs during bundle loading.\n     */    catch(t) {\n        return this.Lf.promise.catch(t);\n    }\n    /**\n     * Implements the `Promise<LoadBundleTaskProgress>.then` interface.\n     *\n     * @param onFulfilled - Called on the completion of the loading task with a final `LoadBundleTaskProgress` update.\n     *   The update will always have its `taskState` set to `\"Success\"`.\n     * @param onRejected - Called when an error occurs during bundle loading.\n     */    then(t, e) {\n        return this.Lf.promise.then(t, e);\n    }\n    /**\n     * Notifies all observers that bundle loading has completed, with a provided\n     * `LoadBundleTaskProgress` object.\n     *\n     * @private\n     */    ql(t) {\n        this.Ul(t), this.Mf.complete && this.Mf.complete(), this.Lf.resolve(t);\n    }\n    /**\n     * Notifies all observers that bundle loading has failed, with a provided\n     * `Error` as the reason.\n     *\n     * @private\n     */    Kl(t) {\n        this.$f.taskState = \"Error\", this.Mf.next && this.Mf.next(this.$f), this.Mf.error && this.Mf.error(t), \n        this.Lf.reject(t);\n    }\n    /**\n     * Notifies a progress update of loading a bundle.\n     * @param progress - The new progress.\n     *\n     * @private\n     */    Ul(t) {\n        this.$f = t, this.Mf.next && this.Mf.next(t);\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/** DOMException error code constants. */ const Ya = -1;\n\n/**\n * The Cloud Firestore service interface.\n *\n * Do not call this constructor directly. Instead, use {@link getFirestore}.\n */\nclass Xa extends Kc {\n    /** @hideconstructor */\n    constructor(t, e) {\n        super(t, e), this.Bf = new za, this.w_ = \"name\" in t ? t.name : \"[DEFAULT]\";\n    }\n    b_() {\n        return this.qf || \n        // The client must be initialized to ensure that all subsequent API\n        // usage throws an exception.\n        tu(this), this.qf.terminate();\n    }\n}\n\nfunction Za(t) {\n    return t.qf || tu(t), t.qf.df(), t.qf;\n}\n\nfunction tu(t) {\n    const e = t.p_(), n = function(t, e, n) {\n        return new T(t, e, n.host, n.ssl, n.experimentalForceLongPolling, n.experimentalAutoDetectLongPolling);\n    }(t.I_, t.w_, e);\n    t.qf = new va(t.m_, t.Bf, n);\n}\n\n/**\n * Attempts to enable persistent storage, if possible.\n *\n * Must be called before any other functions (other than\n * {@link initializeFirestore}, {@link getFirestore} or\n * {@link clearIndexedDbPersistence}.\n *\n * If this fails, `enableIndexedDbPersistence()` will reject the promise it\n * returns. Note that even after this failure, the `Firestore` instance will\n * remain usable, however offline persistence will be disabled.\n *\n * There are several reasons why this can fail, which can be identified by\n * the `code` on the error.\n *\n *   * failed-precondition: The app is already open in another browser tab.\n *   * unimplemented: The browser is incompatible with the offline\n *     persistence implementation.\n *\n * @param firestore - The `Firestore` instance to enable persistence for.\n * @param persistenceSettings - Optional settings object to configure\n * persistence.\n * @returns A promise that represents successfully enabling persistent storage.\n */\n/**\n * Registers both the `OfflineComponentProvider` and `OnlineComponentProvider`.\n * If the operation fails with a recoverable error (see\n * `canRecoverFromIndexedDbError()` below), the returned Promise is rejected\n * but the client remains usable.\n */\nfunction eu(t, e, n) {\n    const s = new ds;\n    return t._s.enqueue((async () => {\n        try {\n            await Sa(t, n), await Da(t, e), s.resolve();\n        } catch (t) {\n            if (!\n            /**\n * Decides whether the provided error allows us to gracefully disable\n * persistence (as opposed to crashing the client).\n */\n            function(t) {\n                if (\"FirebaseError\" === t.name) return t.code === F.FAILED_PRECONDITION || t.code === F.UNIMPLEMENTED;\n                if (\"undefined\" != typeof DOMException && t instanceof DOMException) \n                // There are a few known circumstances where we can open IndexedDb but\n                // trying to read/write will fail (e.g. quota exceeded). For\n                // well-understood cases, we attempt to detect these and then gracefully\n                // fall back to memory persistence.\n                // NOTE: Rather than continue to add to this list, we could decide to\n                // always fall back, with the risk that we might accidentally hide errors\n                // representing actual SDK bugs.\n                // When the browser is out of quota we could get either quota exceeded\n                // or an aborted error depending on whether the error happened during\n                // schema migration.\n                return 22 === t.code || 20 === t.code || \n                // Firefox Private Browsing mode disables IndexedDb and returns\n                // INVALID_STATE for any usage.\n                11 === t.code;\n                return !0;\n            }\n            /**\n * Clears the persistent storage. This includes pending writes and cached\n * documents.\n *\n * Must be called while the `Firestore` instance is not started (after the app is\n * terminated or when the app is first initialized). On startup, this function\n * must be called before other functions (other than {@link\n * initializeFirestore} or {@link getFirestore})). If the `Firestore`\n * instance is still running, the promise will be rejected with the error code\n * of `failed-precondition`.\n *\n * Note: `clearIndexedDbPersistence()` is primarily intended to help write\n * reliable tests that use Cloud Firestore. It uses an efficient mechanism for\n * dropping existing data but does not attempt to securely overwrite or\n * otherwise make cached data unrecoverable. For applications that are sensitive\n * to the disclosure of cached data in between user sessions, we strongly\n * recommend not enabling persistence at all.\n *\n * @param firestore - The `Firestore` instance to clear persistence for.\n * @returns A promise that is resolved when the persistent storage is\n * cleared. Otherwise, the promise is rejected with an error.\n */ (t)) throw t;\n            console.warn(\"Error enabling offline persistence. Falling back to persistence disabled: \" + t), \n            s.reject(t);\n        }\n    })).then((() => s.promise));\n}\n\nfunction nu(t) {\n    if (t.R_ && !t.P_) throw new O(F.FAILED_PRECONDITION, \"Persistence can only be cleared before a Firestore instance is initialized or after it is terminated.\");\n    const e = new ds;\n    return t.Bf.Tf((async () => {\n        try {\n            await async function(t) {\n                if (!Ts.Kn()) return Promise.resolve();\n                const e = t + \"main\";\n                await Ts.delete(e);\n            }(Xi(t.I_, t.w_)), e.resolve();\n        } catch (t) {\n            e.reject(t);\n        }\n    })), e.promise;\n}\n\n/**\n * Waits until all currently pending writes for the active user have been\n * acknowledged by the backend.\n *\n * The returned Promise resolves immediately if there are no outstanding writes.\n * Otherwise, the Promise waits for all previously issued writes (including\n * those written in a previous app session), but it does not wait for writes\n * that were added after the function is called. If you want to wait for\n * additional writes, call `waitForPendingWrites()` again.\n *\n * Any outstanding `waitForPendingWrites()` Promises are rejected during user\n * changes.\n *\n * @returns A Promise which resolves when all currently pending writes have been\n * acknowledged by the backend.\n */ function su(t) {\n    return function(t) {\n        const e = new ds;\n        return t._s.Ps((async () => ec(await ka(t), e))), e.promise;\n    }(Za(t = Bc(t, Xa)));\n}\n\n/**\n * Re-enables use of the network for this Firestore instance after a prior\n * call to {@link disableNetwork}.\n *\n * @returns A promise that is resolved once the network has been enabled.\n */ function iu(t) {\n    if (t.R_ || t.P_) throw new O(F.FAILED_PRECONDITION, \"Firestore has already been started and persistence can no longer be enabled. You can only enable persistence before calling any other methods on a Firestore object.\");\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Converts Firestore's internal types to the JavaScript types that we expose\n * to the user.\n */ class ru {\n    Uf(t, e = \"none\") {\n        switch (lt(t)) {\n          case 0 /* NullValue */ :\n            return null;\n\n          case 1 /* BooleanValue */ :\n            return t.booleanValue;\n\n          case 2 /* NumberValue */ :\n            return st(t.integerValue || t.doubleValue);\n\n          case 3 /* TimestampValue */ :\n            return this.Qf(t.timestampValue);\n\n          case 4 /* ServerTimestampValue */ :\n            return this.Kf(t, e);\n\n          case 5 /* StringValue */ :\n            return t.stringValue;\n\n          case 6 /* BlobValue */ :\n            return this.Wf(it(t.bytesValue));\n\n          case 7 /* RefValue */ :\n            return this.jf(t.referenceValue);\n\n          case 8 /* GeoPointValue */ :\n            return this.Gf(t.geoPointValue);\n\n          case 9 /* ArrayValue */ :\n            return this.zf(t.arrayValue, e);\n\n          case 10 /* ObjectValue */ :\n            return this.Hf(t.mapValue, e);\n\n          default:\n            throw V();\n        }\n    }\n    Hf(t, e) {\n        const n = {};\n        return X(t.fields || {}, ((t, s) => {\n            n[t] = this.Uf(s, e);\n        })), n;\n    }\n    Gf(t) {\n        return new Zc(st(t.latitude), st(t.longitude));\n    }\n    zf(t, e) {\n        return (t.values || []).map((t => this.Uf(t, e)));\n    }\n    Kf(t, e) {\n        switch (e) {\n          case \"previous\":\n            const n = ot(t);\n            return null == n ? null : this.Uf(n, e);\n\n          case \"estimate\":\n            return this.Qf(ct(t));\n\n          default:\n            return null;\n        }\n    }\n    Qf(t) {\n        const e = nt(t);\n        return new K(e.seconds, e.nanos);\n    }\n    Jf(t, e) {\n        const n = G.ot(t);\n        p(fs(n));\n        const s = new I(n.get(1), n.get(3)), i = new J(n.Y(5));\n        return s.isEqual(e) || \n        // TODO(b/64130202): Somehow support foreign references.\n        P(`Document ${i} contains a document reference within a different database (${s.projectId}/${s.database}) which is not supported. It will be treated as a reference in the current database (${e.projectId}/${e.database}) instead.`), \n        i;\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * A `DocumentSnapshot` contains data read from a document in your Firestore\n * database. The data can be extracted with `.data()` or `.get(<field>)` to\n * get a specific field.\n *\n * For a `DocumentSnapshot` that points to a non-existing document, any data\n * access will return 'undefined'. You can use the `exists()` method to\n * explicitly verify a document's existence.\n */ class ou {\n    // Note: This class is stripped down version of the DocumentSnapshot in\n    // the legacy SDK. The changes are:\n    // - No support for SnapshotMetadata.\n    // - No support for SnapshotOptions.\n    /** @hideconstructor protected */\n    constructor(t, e, n, s, i) {\n        this.Yf = t, this.Xf = e, this.S_ = n, this.Zf = s, this.v_ = i;\n    }\n    /** Property of the `DocumentSnapshot` that provides the document's ID. */    get id() {\n        return this.S_.path.tt();\n    }\n    /**\n     * The `DocumentReference` for the document included in the `DocumentSnapshot`.\n     */    get ref() {\n        return new Wc(this.Yf, this.v_, this.S_);\n    }\n    /**\n     * Signals whether or not the document at the snapshot's location exists.\n     *\n     * @returns true if the document exists.\n     */    exists() {\n        return null !== this.Zf;\n    }\n    /**\n     * Retrieves all fields in the document as an `Object`. Returns `undefined` if\n     * the document doesn't exist.\n     *\n     * @returns An `Object` containing all fields in the document or `undefined`\n     * if the document doesn't exist.\n     */    data() {\n        if (this.Zf) {\n            if (this.v_) {\n                // We only want to use the converter and create a new DocumentSnapshot\n                // if a converter has been provided.\n                const t = new cu(this.Yf, this.Xf, this.S_, this.Zf, \n                /* converter= */ null);\n                return this.v_.fromFirestore(t);\n            }\n            return this.Xf.Uf(this.Zf.bt());\n        }\n    }\n    /**\n     * Retrieves the field specified by `fieldPath`. Returns `undefined` if the\n     * document or field doesn't exist.\n     *\n     * @param fieldPath - The path (for example 'foo' or 'foo.bar') to a specific\n     * field.\n     * @returns The data at the specified field location or undefined if no such\n     * field exists in the document.\n     */\n    // We are using `any` here to avoid an explicit cast by our users.\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    get(t) {\n        if (this.Zf) {\n            const e = this.Zf.data().field(au(\"DocumentSnapshot.get\", t));\n            if (null !== e) return this.Xf.Uf(e);\n        }\n    }\n}\n\n/**\n * A `QueryDocumentSnapshot` contains data read from a document in your\n * Firestore database as part of a query. The document is guaranteed to exist\n * and its data can be extracted with `.data()` or `.get(<field>)` to get a\n * specific field.\n *\n * A `QueryDocumentSnapshot` offers the same API surface as a\n * `DocumentSnapshot`. Since query results contain only existing documents, the\n * `exists` property will always be true and `data()` will never return\n * 'undefined'.\n */ class cu extends ou {\n    /**\n     * Retrieves all fields in the document as an `Object`.\n     *\n     * @override\n     * @returns An `Object` containing all fields in the document.\n     */\n    data() {\n        return super.data();\n    }\n}\n\n/**\n * Helper that calls fromDotSeparatedString() but wraps any error thrown.\n */ function au(t, e) {\n    return \"string\" == typeof e ? ya(t, e) : e instanceof Nc ? e.d_.f_ : e.f_;\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ function uu(t) {\n    if (se(t) && 0 === t.xt.length) throw new O(F.UNIMPLEMENTED, \"limitToLast() queries require specifying at least one orderBy() clause\");\n}\n\n/**\n * A `QueryConstraint` is used to narrow the set of documents returned by a\n * Firestore query. `QueryConstraint`s are created by invoking {@link where},\n * {@link orderBy}, {@link startAt}, {@link startAfter}, {@link\n * endBefore}, {@link endAt}, {@link limit} or {@link limitToLast} and\n * can then be passed to {@link query} to create a new query instance that\n * also contains this `QueryConstraint`.\n */ class hu {}\n\n/**\n * Creates a new immutable instance of `query` that is extended to also include\n * additional query constraints.\n *\n * @param query - The query instance to use as a base for the new constraints.\n * @param queryConstraints - The list of `QueryConstraint`s to apply.\n * @throws if any of the provided query constraints cannot be combined with the\n * existing or new constraints.\n */ function lu(t, ...e) {\n    for (const n of e) t = n.td(t);\n    return t;\n}\n\nclass _u extends hu {\n    constructor(t, e, n) {\n        super(), this.ed = t, this.nd = e, this.sd = n, this.type = \"where\";\n    }\n    td(t) {\n        const e = oa(t.firestore), n = function(t, e, n, s, i, r, o) {\n            let c;\n            if (i.ut()) {\n                if (\"array-contains\" /* ARRAY_CONTAINS */ === r || \"array-contains-any\" /* ARRAY_CONTAINS_ANY */ === r) throw new O(F.INVALID_ARGUMENT, `Invalid Query. You can't perform '${r}' queries on FieldPath.documentId().`);\n                if (\"in\" /* IN */ === r || \"not-in\" /* NOT_IN */ === r) {\n                    mu(o, r);\n                    const e = [];\n                    for (const n of o) e.push(Iu(s, t, n));\n                    c = {\n                        arrayValue: {\n                            values: e\n                        }\n                    };\n                } else c = Iu(s, t, o);\n            } else \"in\" /* IN */ !== r && \"not-in\" /* NOT_IN */ !== r && \"array-contains-any\" /* ARRAY_CONTAINS_ANY */ !== r || mu(o, r), \n            c = Ea(n, e, o, \n            /* allowArrays= */ \"in\" /* IN */ === r || \"not-in\" /* NOT_IN */ === r);\n            const a = Mt.create(i, r, c);\n            return function(t, e) {\n                if (e.Ct()) {\n                    const n = re(t);\n                    if (null !== n && !n.isEqual(e.field)) throw new O(F.INVALID_ARGUMENT, `Invalid query. All where filters with an inequality (<, <=, !=, not-in, >, or >=) must be on the same field. But you have inequality filters on '${n.toString()}' and '${e.field.toString()}'`);\n                    const s = ie(t);\n                    null !== s && Au(t, e.field, s);\n                }\n                const n = function(t, e) {\n                    for (const n of t.filters) if (e.indexOf(n.op) >= 0) return n.op;\n                    return null;\n                }(t, \n                /**\n * Given an operator, returns the set of operators that cannot be used with it.\n *\n * Operators in a query must adhere to the following set of rules:\n * 1. Only one array operator is allowed.\n * 2. Only one disjunctive operator is allowed.\n * 3. NOT_EQUAL cannot be used with another NOT_EQUAL operator.\n * 4. NOT_IN cannot be used with array, disjunctive, or NOT_EQUAL operators.\n *\n * Array operators: ARRAY_CONTAINS, ARRAY_CONTAINS_ANY\n * Disjunctive operators: IN, ARRAY_CONTAINS_ANY, NOT_IN\n */\n                function(t) {\n                    switch (t) {\n                      case \"!=\" /* NOT_EQUAL */ :\n                        return [ \"!=\" /* NOT_EQUAL */ , \"not-in\" /* NOT_IN */ ];\n\n                      case \"array-contains\" /* ARRAY_CONTAINS */ :\n                        return [ \"array-contains\" /* ARRAY_CONTAINS */ , \"array-contains-any\" /* ARRAY_CONTAINS_ANY */ , \"not-in\" /* NOT_IN */ ];\n\n                      case \"in\" /* IN */ :\n                        return [ \"array-contains-any\" /* ARRAY_CONTAINS_ANY */ , \"in\" /* IN */ , \"not-in\" /* NOT_IN */ ];\n\n                      case \"array-contains-any\" /* ARRAY_CONTAINS_ANY */ :\n                        return [ \"array-contains\" /* ARRAY_CONTAINS */ , \"array-contains-any\" /* ARRAY_CONTAINS_ANY */ , \"in\" /* IN */ , \"not-in\" /* NOT_IN */ ];\n\n                      case \"not-in\" /* NOT_IN */ :\n                        return [ \"array-contains\" /* ARRAY_CONTAINS */ , \"array-contains-any\" /* ARRAY_CONTAINS_ANY */ , \"in\" /* IN */ , \"not-in\" /* NOT_IN */ , \"!=\" /* NOT_EQUAL */ ];\n\n                      default:\n                        return [];\n                    }\n                }(e.op));\n                if (null !== n) \n                // Special case when it's a duplicate op to give a slightly clearer error message.\n                throw n === e.op ? new O(F.INVALID_ARGUMENT, `Invalid query. You cannot use more than one '${e.op.toString()}' filter.`) : new O(F.INVALID_ARGUMENT, `Invalid query. You cannot use '${e.op.toString()}' filters with '${n.toString()}' filters.`);\n            }(t, a), a;\n        }(t.C_, \"where\", e, t.firestore.I_, this.ed, this.nd, this.sd);\n        return new jc(t.firestore, t.v_, function(t, e) {\n            const n = t.filters.concat([ e ]);\n            return new Zt(t.path, t.collectionGroup, t.xt.slice(), n, t.limit, t.limitType, t.startAt, t.endAt);\n        }(t.C_, n));\n    }\n}\n\n/**\n * Creates a `QueryConstraint` that enforces that documents must contain the\n * specified field and that the value should satisfy the relation constraint\n * provided.\n *\n * @param fieldPath - The path to compare\n * @param opStr - The operation string (e.g \"&lt;\", \"&lt;=\", \"==\", \"&lt;\",\n *   \"&lt;=\", \"!=\").\n * @param value - The value for comparison\n * @returns The created `Query`.\n */ class fu extends hu {\n    constructor(t, e) {\n        super(), this.ed = t, this.rd = e, this.type = \"orderBy\";\n    }\n    td(t) {\n        const e = function(t, e, n) {\n            if (null !== t.startAt) throw new O(F.INVALID_ARGUMENT, \"Invalid query. You must not call startAt() or startAfter() before calling orderBy().\");\n            if (null !== t.endAt) throw new O(F.INVALID_ARGUMENT, \"Invalid query. You must not call endAt() or endBefore() before calling orderBy().\");\n            const s = new Ht(e, n);\n            return function(t, e) {\n                if (null === ie(t)) {\n                    // This is the first order by. It must match any inequality.\n                    const n = re(t);\n                    null !== n && Au(t, n, e.field);\n                }\n            }(t, s), s;\n        }\n        /**\n * Create a Bound from a query and a document.\n *\n * Note that the Bound will always include the key of the document\n * and so only the provided document will compare equal to the returned\n * position.\n *\n * Will throw if the document does not contain all fields of the order by\n * of the query or if any of the fields in the order by are an uncommitted\n * server timestamp.\n */ (t.C_, this.ed, this.rd);\n        return new jc(t.firestore, t.v_, function(t, e) {\n            // TODO(dimond): validate that orderBy does not list the same key twice.\n            const n = t.xt.concat([ e ]);\n            return new Zt(t.path, t.collectionGroup, n, t.filters.slice(), t.limit, t.limitType, t.startAt, t.endAt);\n        }(t.C_, e));\n    }\n}\n\n/**\n * Creates a `QueryConstraint` that sorts the query result by the\n * specified field, optionally in descending order instead of ascending.\n *\n * @param fieldPath - The field to sort by.\n * @param directionStr - Optional direction to sort by ('asc' or 'desc'). If\n * not specified, order will be ascending.\n * @returns The created `Query`.\n */ class du extends hu {\n    constructor(t, e, n) {\n        super(), this.type = t, this.od = e, this.ad = n;\n    }\n    td(t) {\n        return new jc(t.firestore, t.v_, ue(t.C_, this.od, this.ad));\n    }\n}\n\n/**\n * Creates a `QueryConstraint` that only returns the first matching documents.\n *\n * @param limit - The maximum number of items to return.\n * @returns The created `Query`.\n */ class wu extends hu {\n    constructor(t, e, n) {\n        super(), this.type = t, this.ud = e, this.hd = n;\n    }\n    td(t) {\n        const e = Tu(t, this.type, this.ud, this.hd);\n        return new jc(t.firestore, t.v_, function(t, e) {\n            return new Zt(t.path, t.collectionGroup, t.xt.slice(), t.filters.slice(), t.limit, t.limitType, e, t.endAt);\n        }(t.C_, e));\n    }\n}\n\nclass Eu extends hu {\n    constructor(t, e, n) {\n        super(), this.type = t, this.ud = e, this.hd = n;\n    }\n    td(t) {\n        const e = Tu(t, this.type, this.ud, this.hd);\n        return new jc(t.firestore, t.v_, function(t, e) {\n            return new Zt(t.path, t.collectionGroup, t.xt.slice(), t.filters.slice(), t.limit, t.limitType, t.startAt, e);\n        }(t.C_, e));\n    }\n}\n\n/** Helper function to create a bound from a document or fields */\nfunction Tu(t, e, n, s) {\n    if (n[0] instanceof Nc && (n[0] = n[0].d_), n[0] instanceof ou) return function(t, e, n, s, i) {\n        if (!s) throw new O(F.NOT_FOUND, \"Can't use a DocumentSnapshot that doesn't exist for \" + n + \"().\");\n        const r = [];\n        // Because people expect to continue/end a query at the exact document\n        // provided, we need to use the implicit sort order rather than the explicit\n        // sort order, because it's guaranteed to contain the document key. That way\n        // the position becomes unambiguous and the query continues/ends exactly at\n        // the provided document. Without the key (by using the explicit sort\n        // orders), multiple documents could match the position, yielding duplicate\n        // results.\n                for (const n of ce(t)) if (n.field.ut()) r.push(It(e, s.key)); else {\n            const t = s.field(n.field);\n            if (rt(t)) throw new O(F.INVALID_ARGUMENT, 'Invalid query. You are trying to start or end a query using a document for which the field \"' + n.field + '\" is an uncommitted server timestamp. (Since the value of this field is unknown, you cannot start/end a query with it.)');\n            if (null === t) {\n                const t = n.field.rt();\n                throw new O(F.INVALID_ARGUMENT, `Invalid query. You are trying to start or end a query using a document for which the field '${t}' (used as the orderBy) does not exist.`);\n            }\n            r.push(t);\n        }\n        return new Gt(r, i);\n    }\n    /**\n * Converts a list of field values to a Bound for the given query.\n */ (t.C_, t.firestore.I_, e, n[0].Zf, s);\n    {\n        const i = oa(t.firestore);\n        return function(t, e, n, s, i, r) {\n            // Use explicit order by's because it has to match the query the user made\n            const o = t.xt;\n            if (i.length > o.length) throw new O(F.INVALID_ARGUMENT, `Too many arguments provided to ${s}(). The number of arguments must be less than or equal to the number of orderBy() clauses`);\n            const c = [];\n            for (let r = 0; r < i.length; r++) {\n                const a = i[r];\n                if (o[r].field.ut()) {\n                    if (\"string\" != typeof a) throw new O(F.INVALID_ARGUMENT, `Invalid query. Expected a string for document ID in ${s}(), but got a ${typeof a}`);\n                    if (!oe(t) && -1 !== a.indexOf(\"/\")) throw new O(F.INVALID_ARGUMENT, `Invalid query. When querying a collection and ordering by FieldPath.documentId(), the value passed to ${s}() must be a plain document ID, but '${a}' contains a slash.`);\n                    const n = t.path.child(G.ot(a));\n                    if (!J.wt(n)) throw new O(F.INVALID_ARGUMENT, `Invalid query. When querying a collection group and ordering by FieldPath.documentId(), the value passed to ${s}() must result in a valid document path, but '${n}' is not because it contains an odd number of segments.`);\n                    const i = new J(n);\n                    c.push(It(e, i));\n                } else {\n                    const t = Ea(n, s, a);\n                    c.push(t);\n                }\n            }\n            return new Gt(c, r);\n        }\n        /**\n * Parses the given documentIdValue into a ReferenceValue, throwing\n * appropriate errors if the value is anything other than a DocumentReference\n * or String, or if the string is malformed.\n */ (t.C_, t.firestore.I_, i, e, n, s);\n    }\n}\n\nfunction Iu(t, e, n) {\n    if (n instanceof Nc && (n = n.d_), \"string\" == typeof n) {\n        if (\"\" === n) throw new O(F.INVALID_ARGUMENT, \"Invalid query. When querying with FieldPath.documentId(), you must provide a valid document ID, but it was an empty string.\");\n        if (!oe(e) && -1 !== n.indexOf(\"/\")) throw new O(F.INVALID_ARGUMENT, `Invalid query. When querying a collection by FieldPath.documentId(), you must provide a plain document ID, but '${n}' contains a '/' character.`);\n        const s = e.path.child(G.ot(n));\n        if (!J.wt(s)) throw new O(F.INVALID_ARGUMENT, `Invalid query. When querying a collection group by FieldPath.documentId(), the value provided must result in a valid document path, but '${s}' is not because it has an odd number of segments (${s.length}).`);\n        return It(t, new J(s));\n    }\n    if (n instanceof Wc) return It(t, n.S_);\n    throw new O(F.INVALID_ARGUMENT, \"Invalid query. When querying with FieldPath.documentId(), you must provide a valid string or a DocumentReference, but it was: \" + $c(n) + \".\");\n}\n\n/**\n * Validates that the value passed into a disjunctive filter satisfies all\n * array requirements.\n */ function mu(t, e) {\n    if (!Array.isArray(t) || 0 === t.length) throw new O(F.INVALID_ARGUMENT, `Invalid Query. A non-empty array is required for '${e.toString()}' filters.`);\n    if (t.length > 10) throw new O(F.INVALID_ARGUMENT, `Invalid Query. '${e.toString()}' filters support a maximum of 10 elements in the value array.`);\n}\n\nfunction Au(t, e, n) {\n    if (!n.isEqual(e)) throw new O(F.INVALID_ARGUMENT, `Invalid query. You have a where filter with an inequality (<, <=, !=, not-in, >, or >=) on field '${e.toString()}' and so you must also use '${e.toString()}' as your first argument to orderBy(), but your first orderBy() is on field '${n.toString()}' instead.`);\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Converts custom model object of type T into DocumentData by applying the\n * converter if it exists.\n *\n * This function is used when converting user objects to DocumentData\n * because we want to provide the user with a more specific error message if\n * their set() or fails due to invalid data originating from a toFirestore()\n * call.\n */ function Ru(t, e, n) {\n    let s;\n    // Cast to `any` in order to satisfy the union type constraint on\n    // toFirestore().\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    return s = t ? n && (n.merge || n.mergeFields) ? t.toFirestore(e, n) : t.toFirestore(e) : e, \n    s;\n}\n\nclass Pu extends ru {\n    constructor(t) {\n        super(), this.firestore = t;\n    }\n    Wf(t) {\n        return new k(t);\n    }\n    jf(t) {\n        const e = this.Jf(t, this.firestore.I_);\n        return new Wc(this.firestore, /* converter= */ null, e);\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Metadata about a snapshot, describing the state of the snapshot.\n */ class yu {\n    /** @hideconstructor */\n    constructor(t, e) {\n        this.hasPendingWrites = t, this.fromCache = e;\n    }\n    /**\n     * Returns true if this `SnapshotMetadata` is equal to the provided one.\n     *\n     * @param other - The `SnapshotMetadata` to compare against.\n     * @returns true if this `SnapshotMetadata` is equal to the provided one.\n     */    isEqual(t) {\n        return this.hasPendingWrites === t.hasPendingWrites && this.fromCache === t.fromCache;\n    }\n}\n\n/**\n * A `DocumentSnapshot` contains data read from a document in your Firestore\n * database. The data can be extracted with `.data()` or `.get(<field>)` to\n * get a specific field.\n *\n * For a `DocumentSnapshot` that points to a non-existing document, any data\n * access will return 'undefined'. You can use the `exists()` method to\n * explicitly verify a document's existence.\n */ class gu extends ou {\n    /** @hideconstructor protected */\n    constructor(t, e, n, s, i, r) {\n        super(t, e, n, s, r), this.Yf = t, this.ld = t, this.metadata = i;\n    }\n    /**\n     * Property of the `DocumentSnapshot` that signals whether or not the data\n     * exists. True if the document exists.\n     */    exists() {\n        return super.exists();\n    }\n    /**\n     * Retrieves all fields in the document as an `Object`. Returns `undefined` if\n     * the document doesn't exist.\n     *\n     * By default, `FieldValue.serverTimestamp()` values that have not yet been\n     * set to their final value will be returned as `null`. You can override\n     * this by passing an options object.\n     *\n     * @param options - An options object to configure how data is retrieved from\n     * the snapshot (for example the desired behavior for server timestamps that\n     * have not yet been set to their final value).\n     * @returns An `Object` containing all fields in the document or `undefined` if\n     * the document doesn't exist.\n     */    data(t = {}) {\n        if (this.Zf) {\n            if (this.v_) {\n                // We only want to use the converter and create a new DocumentSnapshot\n                // if a converter has been provided.\n                const e = new Vu(this.Yf, this.Xf, this.S_, this.Zf, this.metadata, \n                /* converter= */ null);\n                return this.v_.fromFirestore(e, t);\n            }\n            return this.Xf.Uf(this.Zf.bt(), t.serverTimestamps);\n        }\n    }\n    /**\n     * Retrieves the field specified by `fieldPath`. Returns `undefined` if the\n     * document or field doesn't exist.\n     *\n     * By default, a `FieldValue.serverTimestamp()` that has not yet been set to\n     * its final value will be returned as `null`. You can override this by\n     * passing an options object.\n     *\n     * @param fieldPath - The path (for example 'foo' or 'foo.bar') to a specific\n     * field.\n     * @param options - An options object to configure how the field is retrieved\n     * from the snapshot (for example the desired behavior for server timestamps\n     * that have not yet been set to their final value).\n     * @returns The data at the specified field location or undefined if no such\n     * field exists in the document.\n     */\n    // We are using `any` here to avoid an explicit cast by our users.\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\n    get(t, e = {}) {\n        if (this.Zf) {\n            const n = this.Zf.data().field(au(\"DocumentSnapshot.get\", t));\n            if (null !== n) return this.Xf.Uf(n, e.serverTimestamps);\n        }\n    }\n}\n\n/**\n * A `QueryDocumentSnapshot` contains data read from a document in your\n * Firestore database as part of a query. The document is guaranteed to exist\n * and its data can be extracted with `.data()` or `.get(<field>)` to get a\n * specific field.\n *\n * A `QueryDocumentSnapshot` offers the same API surface as a\n * `DocumentSnapshot`. Since query results contain only existing documents, the\n * `exists` property will always be true and `data()` will never return\n * 'undefined'.\n */ class Vu extends gu {\n    /**\n     * Retrieves all fields in the document as an `Object`.\n     *\n     * By default, `FieldValue.serverTimestamp()` values that have not yet been\n     * set to their final value will be returned as `null`. You can override\n     * this by passing an options object.\n     *\n     * @override\n     * @param options - An options object to configure how data is retrieved from\n     * the snapshot (for example the desired behavior for server timestamps that\n     * have not yet been set to their final value).\n     * @returns An `Object` containing all fields in the document.\n     */\n    data(t = {}) {\n        return super.data(t);\n    }\n}\n\n/**\n * A `QuerySnapshot` contains zero or more `DocumentSnapshot` objects\n * representing the results of a query. The documents can be accessed as an\n * array via the `docs` property or enumerated using the `forEach` method. The\n * number of documents can be determined via the `empty` and `size`\n * properties.\n */ class pu {\n    /** @hideconstructor */\n    constructor(t, e, n, s) {\n        this.Yf = t, this.Xf = e, this._d = s, this.metadata = new yu(s.hasPendingWrites, s.fromCache), \n        this.query = n;\n    }\n    /** An array of all the documents in the `QuerySnapshot`. */    get docs() {\n        const t = [];\n        return this.forEach((e => t.push(e))), t;\n    }\n    /** The number of documents in the `QuerySnapshot`. */    get size() {\n        return this._d.docs.size;\n    }\n    /** True if there are no documents in the `QuerySnapshot`. */    get empty() {\n        return 0 === this.size;\n    }\n    /**\n     * Enumerates all of the documents in the `QuerySnapshot`.\n     *\n     * @param callback - A callback to be called with a `QueryDocumentSnapshot` for\n     * each document in the snapshot.\n     * @param thisArg - The `this` binding for the callback.\n     */    forEach(t, e) {\n        this._d.docs.forEach((n => {\n            t.call(e, new Vu(this.Yf, this.Xf, n.key, n, new yu(this._d.De.has(n.key), this._d.fromCache), this.query.v_));\n        }));\n    }\n    /**\n     * Returns an array of the documents changes since the last snapshot. If this\n     * is the first snapshot, all documents will be in the list as 'added'\n     * changes.\n     *\n     * @param options - `SnapshotListenOptions` that control whether metadata-only\n     * changes (i.e. only `DocumentSnapshot.metadata` changed) should trigger\n     * snapshot events.\n     */    docChanges(t = {}) {\n        const e = !!t.includeMetadataChanges;\n        if (e && this._d.xe) throw new O(F.INVALID_ARGUMENT, \"To include metadata changes with your document changes, you must also pass { includeMetadataChanges:true } to onSnapshot().\");\n        return this.fd && this.dd === e || (this.fd = \n        /** Calculates the array of DocumentChanges for a given ViewSnapshot. */\n        function(t, e) {\n            if (t._d.Se.et()) {\n                // Special case the first snapshot because index calculation is easy and\n                // fast\n                let e, n = 0;\n                return t._d.docChanges.map((s => {\n                    const i = new Vu(t.Yf, t.Xf, s.doc.key, s.doc, new yu(t._d.De.has(s.doc.key), t._d.fromCache), t.query.v_);\n                    return e = s.doc, {\n                        type: \"added\",\n                        doc: i,\n                        oldIndex: -1,\n                        newIndex: n++\n                    };\n                }));\n            }\n            {\n                // A DocumentSet that is updated incrementally as changes are applied to use\n                // to lookup the index of a document.\n                let n = t._d.Se;\n                return t._d.docChanges.filter((t => e || 3 /* Metadata */ !== t.type)).map((e => {\n                    const s = new Vu(t.Yf, t.Xf, e.doc.key, e.doc, new yu(t._d.De.has(e.doc.key), t._d.fromCache), t.query.v_);\n                    let i = -1, r = -1;\n                    return 0 /* Added */ !== e.type && (i = n.indexOf(e.doc.key), n = n.delete(e.doc.key)), \n                    1 /* Removed */ !== e.type && (n = n.add(e.doc), r = n.indexOf(e.doc.key)), {\n                        type: bu(e.type),\n                        doc: s,\n                        oldIndex: i,\n                        newIndex: r\n                    };\n                }));\n            }\n        }(this, e), this.dd = e), this.fd;\n    }\n}\n\nfunction bu(t) {\n    switch (t) {\n      case 0 /* Added */ :\n        return \"added\";\n\n      case 2 /* Modified */ :\n      case 3 /* Metadata */ :\n        return \"modified\";\n\n      case 1 /* Removed */ :\n        return \"removed\";\n\n      default:\n        return V();\n    }\n}\n\n// TODO(firestoreexp): Add tests for snapshotEqual with different snapshot\n// metadata\n/**\n * Returns true if the provided snapshots are equal.\n *\n * @param left - A snapshot to compare.\n * @param right - A snapshot to compare.\n * @returns true if the snapshots are equal.\n */ function vu(t, e) {\n    return t instanceof gu && e instanceof gu ? t.Yf === e.Yf && t.S_.isEqual(e.S_) && (null === t.Zf ? null === e.Zf : t.Zf.isEqual(e.Zf)) && t.v_ === e.v_ : t instanceof pu && e instanceof pu && (t.Yf === e.Yf && Xc(t.query, e.query) && t.metadata.isEqual(e.metadata) && t._d.isEqual(e._d));\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Reads the document referred to by this `DocumentReference`.\n *\n * Note: `getDoc()` attempts to provide up-to-date data when possible by waiting\n * for data from the server, but it may return cached data or fail if you are\n * offline and the server cannot be reached. To specify this behavior, invoke\n * {@link getDocFromCache} or {@link getDocFromServer}.\n *\n * @param reference - The reference of the document to fetch.\n * @returns A Promise resolved with a `DocumentSnapshot` containing the\n * current document contents.\n */ class Su extends ru {\n    constructor(t) {\n        super(), this.firestore = t;\n    }\n    Wf(t) {\n        return new k(t);\n    }\n    jf(t) {\n        const e = this.Jf(t, this.firestore.I_);\n        return new Wc(this.firestore, /* converter= */ null, e);\n    }\n}\n\n/**\n * Reads the document referred to by this `DocumentReference` from cache.\n * Returns an error if the document is not currently cached.\n *\n * @returns A Promise resolved with a `DocumentSnapshot` containing the\n * current document contents.\n */ function Du(t, e, n, ...s) {\n    t = Bc(t, Wc);\n    const i = Bc(t.firestore, Xa), r = oa(i);\n    let o;\n    // For Compat types, we have to \"extract\" the underlying types before\n    // performing validation.\n    e instanceof Nc && (e = e.d_), o = \"string\" == typeof e || e instanceof Cc ? wa(r, \"updateDoc\", t.S_, e, n, s) : da(r, \"updateDoc\", t.S_, e);\n    return xu(i, [ o.F_(t.S_, Oe.exists(!0)) ]);\n}\n\n/**\n * Deletes the document referred to by the specified `DocumentReference`.\n *\n * @param reference - A reference to the document to delete.\n * @returns A Promise resolved once the document has been successfully\n * deleted from the backend (note that it won't resolve while you're offline).\n */ function Cu(t, ...e) {\n    var n, s, i;\n    t instanceof Nc && (t = t.d_);\n    let r = {\n        includeMetadataChanges: !1\n    }, o = 0;\n    \"object\" != typeof e[o] || Ha(e[o]) || (r = e[o], o++);\n    const c = {\n        includeMetadataChanges: r.includeMetadataChanges\n    };\n    if (Ha(e[o])) {\n        const t = e[o];\n        e[o] = null === (n = t.next) || void 0 === n ? void 0 : n.bind(t), e[o + 1] = null === (s = t.error) || void 0 === s ? void 0 : s.bind(t), \n        e[o + 2] = null === (i = t.complete) || void 0 === i ? void 0 : i.bind(t);\n    }\n    let a, u, h;\n    if (t instanceof Wc) u = Bc(t.firestore, Xa), h = ee(t.S_.path), a = {\n        next: n => {\n            e[o] && e[o](Nu(u, t, n));\n        },\n        error: e[o + 1],\n        complete: e[o + 2]\n    }; else {\n        const n = Bc(t, jc);\n        u = Bc(n.firestore, Xa), h = n.C_;\n        const s = new Su(u);\n        a = {\n            next: t => {\n                e[o] && e[o](new pu(u, s, n, t));\n            },\n            error: e[o + 1],\n            complete: e[o + 2]\n        }, uu(t.C_);\n    }\n    return function(t, e, n, s) {\n        const i = new Sc(s), r = new Oo(e, i, n);\n        return t._s.Ps((async () => Do(await Ma(t), r))), () => {\n            i.i_(), t._s.Ps((async () => Co(await Ma(t), r)));\n        };\n    }(Za(u), h, c, a);\n}\n\n/** Locally writes `mutations` on the async queue. */\nfunction xu(t, e) {\n    return function(t, e) {\n        const n = new ds;\n        return t._s.Ps((async () => Ho(await ka(t), e, n))), n.promise;\n    }(Za(t), e);\n}\n\n/**\n * Converts a ViewSnapshot that contains the single document specified by `ref`\n * to a DocumentSnapshot.\n */ function Nu(t, e, n) {\n    const s = n.docs.get(e.S_), i = new Su(t);\n    return new gu(t, i, e.S_, s, new yu(n.hasPendingWrites, n.fromCache), e.v_);\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * A write batch, used to perform multiple writes as a single atomic unit.\n *\n * A `WriteBatch` object can be acquired by calling {@link writeBatch}. It\n * provides methods for adding writes to the write batch. None of the writes\n * will be committed (or visible locally) until {@link WriteBatch#commit} is\n * called.\n */ class Fu {\n    /** @hideconstructor */\n    constructor(t, e) {\n        this.Yf = t, this.wd = e, this.Ed = [], this.Td = !1, this.Id = oa(t);\n    }\n    set(t, e, n) {\n        this.md();\n        const s = Ou(t, this.Yf), i = Ru(s.v_, e, n), r = ca(this.Id, \"WriteBatch.set\", s.S_, i, null !== s.v_, n);\n        return this.Ed.push(r.F_(s.S_, Oe.Kt())), this;\n    }\n    update(t, e, n, ...s) {\n        this.md();\n        const i = Ou(t, this.Yf);\n        // For Compat types, we have to \"extract\" the underlying types before\n        // performing validation.\n                let r;\n        return e instanceof Nc && (e = e.d_), r = \"string\" == typeof e || e instanceof Cc ? wa(this.Id, \"WriteBatch.update\", i.S_, e, n, s) : da(this.Id, \"WriteBatch.update\", i.S_, e), \n        this.Ed.push(r.F_(i.S_, Oe.exists(!0))), this;\n    }\n    /**\n     * Deletes the document referred to by the provided {@link DocumentReference}.\n     *\n     * @param documentRef - A reference to the document to be deleted.\n     * @returns This `WriteBatch` instance. Used for chaining method calls.\n     */    delete(t) {\n        this.md();\n        const e = Ou(t, this.Yf);\n        return this.Ed = this.Ed.concat(new He(e.S_, Oe.Kt())), this;\n    }\n    /**\n     * Commits all of the writes in this write batch as a single atomic unit.\n     *\n     * The result of these writes will only be reflected in document reads that\n     * occur after the returned Promise resolves. If the client is offline, the\n     * write fails. If you would like to see local modifications or buffer writes\n     * until the client is online, use the full Firestore SDK.\n     *\n     * @returns A Promise resolved once all of the writes in the batch have been\n     * successfully written to the backend as an atomic unit (note that it won't\n     * resolve while you're offline).\n     */    commit() {\n        return this.md(), this.Td = !0, this.Ed.length > 0 ? this.wd(this.Ed) : Promise.resolve();\n    }\n    md() {\n        if (this.Td) throw new O(F.FAILED_PRECONDITION, \"A write batch can no longer be used after commit() has been called.\");\n    }\n}\n\nfunction Ou(t, e) {\n    if (t instanceof Nc && (t = t.d_), t.firestore !== e) throw new O(F.INVALID_ARGUMENT, \"Provided document reference is from a different Firestore instance.\");\n    return t;\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n// TODO(mrschmidt) Consider using `BaseTransaction` as the base class in the\n// legacy SDK.\n/**\n * A reference to a transaction.\n *\n * The `Transaction` object passed to a transaction's `updateFunction` provides\n * the methods to read and write data within the transaction context. See\n * {@link runTransaction}.\n */\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * A reference to a transaction.\n *\n * The `Transaction` object passed to a transaction's `updateFunction` provides\n * the methods to read and write data within the transaction context. See\n * {@link runTransaction}.\n */\nclass ku extends class {\n    /** @hideconstructor */\n    constructor(t, e) {\n        this.Yf = t, this.Ad = e, this.Id = oa(t);\n    }\n    /**\n     * Reads the document referenced by the provided {@link DocumentReference}.\n     *\n     * @param documentRef - A reference to the document to be read.\n     * @returns A `DocumentSnapshot` with the read data.\n     */    get(t) {\n        const e = Ou(t, this.Yf), n = new Pu(this.Yf);\n        return this.Ad.ef([ e.S_ ]).then((t => {\n            if (!t || 1 !== t.length) return V();\n            const s = t[0];\n            if (s instanceof St) return new ou(this.Yf, n, e.S_, null, e.v_);\n            if (s instanceof vt) return new ou(this.Yf, n, s.key, s, e.v_);\n            throw V();\n        }));\n    }\n    set(t, e, n) {\n        const s = Ou(t, this.Yf), i = Ru(s.v_, e, n), r = ca(this.Id, \"Transaction.set\", s.S_, i, null !== s.v_, n);\n        return this.Ad.set(s.S_, r), this;\n    }\n    update(t, e, n, ...s) {\n        const i = Ou(t, this.Yf);\n        // For Compat types, we have to \"extract\" the underlying types before\n        // performing validation.\n                let r;\n        return e instanceof Nc && (e = e.d_), r = \"string\" == typeof e || e instanceof Cc ? wa(this.Id, \"Transaction.update\", i.S_, e, n, s) : da(this.Id, \"Transaction.update\", i.S_, e), \n        this.Ad.update(i.S_, r), this;\n    }\n    /**\n     * Deletes the document referred to by the provided {@link DocumentReference}.\n     *\n     * @param documentRef - A reference to the document to be deleted.\n     * @returns This `Transaction` instance. Used for chaining method calls.\n     */    delete(t) {\n        const e = Ou(t, this.Yf);\n        return this.Ad.delete(e.S_), this;\n    }\n} {\n    // This class implements the same logic as the Transaction API in the Lite SDK\n    // but is subclassed in order to return its own DocumentSnapshot types.\n    /** @hideconstructor */\n    constructor(t, e) {\n        super(t, e), this.Yf = t;\n    }\n    /**\n     * Reads the document referenced by the provided {@link DocumentReference}.\n     *\n     * @param documentRef - A reference to the document to be read.\n     * @returns A `DocumentSnapshot` with the read data.\n     */    get(t) {\n        const e = Ou(t, this.Yf), n = new Su(this.Yf);\n        return super.get(t).then((t => new gu(this.Yf, n, e.S_, t.Zf, new yu(\n        /* hasPendingWrites= */ !1, \n        /* fromCache= */ !1), e.v_)));\n    }\n}\n\n/**\n * Executes the given `updateFunction` and then attempts to commit the changes\n * applied within the transaction. If any document read within the transaction\n * has changed, Cloud Firestore retries the `updateFunction`. If it fails to\n * commit after 5 attempts, the transaction fails.\n *\n * The maximum number of writes allowed in a single transaction is 500.\n *\n * @param firestore - A reference to the Firestore database to run this\n * transaction against.\n * @param updateFunction - The function to execute within the transaction\n * context.\n * @returns If the transaction completed successfully or was explicitly aborted\n * (the `updateFunction` returned a failed promise), the promise returned by the\n * `updateFunction `is returned here. Otherwise, if the transaction failed, a\n * rejected promise with the corresponding failure error is returned.\n */\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/** Helper function to assert Uint8Array is available at runtime. */\nfunction Mu() {\n    if (\"undefined\" == typeof Uint8Array) throw new O(F.UNIMPLEMENTED, \"Uint8Arrays are not available in this environment.\");\n}\n\n/** Helper function to assert Base64 functions are available at runtime. */ function Lu() {\n    if (\"undefined\" == typeof atob) throw new O(F.UNIMPLEMENTED, \"Blobs are unavailable in Firestore in this environment.\");\n}\n\n/** Immutable class holding a blob (binary data) */ class $u extends Nc {\n    static fromBase64String(t) {\n        return Lu(), new $u(k.fromBase64String(t));\n    }\n    static fromUint8Array(t) {\n        return Mu(), new $u(k.fromUint8Array(t));\n    }\n    toBase64() {\n        return Lu(), this.d_.toBase64();\n    }\n    toUint8Array() {\n        return Mu(), this.d_.toUint8Array();\n    }\n    isEqual(t) {\n        return this.d_.isEqual(t.d_);\n    }\n    toString() {\n        return \"Blob(base64: \" + this.toBase64() + \")\";\n    }\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ const Bu = \"You are using the memory-only build of Firestore. Persistence support is only available via the @firebase/firestore bundle or the firebase-firestore.js build.\";\n\n/**\n * The persistence provider included with the memory-only SDK. This provider\n * errors for all attempts to access persistence.\n */ class qu {\n    enableIndexedDbPersistence(t, e) {\n        throw new O(F.FAILED_PRECONDITION, Bu);\n    }\n    enableMultiTabIndexedDbPersistence(t) {\n        throw new O(F.FAILED_PRECONDITION, Bu);\n    }\n    clearIndexedDbPersistence(t) {\n        throw new O(F.FAILED_PRECONDITION, Bu);\n    }\n}\n\n/**\n * The persistence provider included with the full Firestore SDK.\n */ class Uu {\n    enableIndexedDbPersistence(t, e) {\n        return function(t, e) {\n            iu(t = Bc(t, Xa));\n            const n = Za(t), s = t.p_(), i = new bc;\n            return eu(n, i, new Vc(i, s.cacheSizeBytes, null == e ? void 0 : e.forceOwnership));\n        }\n        /**\n * Attempts to enable multi-tab persistent storage, if possible. If enabled\n * across all tabs, all operations share access to local persistence, including\n * shared execution of queries and latency-compensated local document updates\n * across all connected instances.\n *\n * If this fails, `enableMultiTabIndexedDbPersistence()` will reject the promise\n * it returns. Note that even after this failure, the `Firestore` instance will\n * remain usable, however offline persistence will be disabled.\n *\n * There are several reasons why this can fail, which can be identified by\n * the `code` on the error.\n *\n *   * failed-precondition: The app is already open in another browser tab and\n *     multi-tab is not enabled.\n *   * unimplemented: The browser is incompatible with the offline\n *     persistence implementation.\n *\n * @param firestore - The `Firestore` instance to enable persistence for.\n * @returns A promise that represents successfully enabling persistent\n * storage.\n */ (t.d_, {\n            forceOwnership: e\n        });\n    }\n    enableMultiTabIndexedDbPersistence(t) {\n        return function(t) {\n            iu(t = Bc(t, Xa));\n            const e = Za(t), n = t.p_(), s = new bc;\n            return eu(e, s, new pc(s, n.cacheSizeBytes));\n        }(t.d_);\n    }\n    clearIndexedDbPersistence(t) {\n        return nu(t.d_);\n    }\n}\n\n/**\n * Compat class for Firestore. Exposes Firestore Legacy API, but delegates\n * to the functional API of firestore-exp.\n */ class Qu extends Nc {\n    constructor(t, e, n) {\n        super(e), this.Rd = n, this.INTERNAL = {\n            delete: () => this.terminate()\n        }, t instanceof I || (this.Pd = t);\n    }\n    get I_() {\n        return this.d_.I_;\n    }\n    settings(t) {\n        t.merge && \n        // Remove the property from the settings once the merge is completed\n        delete (t = Object.assign(Object.assign({}, this.d_.V_()), t)).merge, this.d_.g_(t);\n    }\n    useEmulator(t, e) {\n        !function(t, e, n) {\n            const s = (t = Bc(t, Kc)).V_();\n            \"firestore.googleapis.com\" !== s.host && s.host !== e && y(\"Host has been set in both settings() and useEmulator(), emulator host will be used\"), \n            t.g_(Object.assign(Object.assign({}, s), {\n                host: `${e}:${n}`,\n                ssl: !1\n            }));\n        }(this.d_, t, e);\n    }\n    enableNetwork() {\n        return La(Za(Bc(this.d_, Xa)));\n    }\n    disableNetwork() {\n        return $a(Za(Bc(this.d_, Xa)));\n    }\n    enablePersistence(t) {\n        let e = !1, n = !1;\n        return t && (e = !!t.synchronizeTabs, n = !!t.experimentalForceOwningTab, kc(\"synchronizeTabs\", e, \"experimentalForceOwningTab\", n)), \n        e ? this.Rd.enableMultiTabIndexedDbPersistence(this) : this.Rd.enableIndexedDbPersistence(this, n);\n    }\n    clearPersistence() {\n        return this.Rd.clearIndexedDbPersistence(this);\n    }\n    terminate() {\n        return this.Pd && (this.Pd._removeServiceInstance(\"firestore\"), this.Pd._removeServiceInstance(\"firestore-exp\")), \n        this.d_._delete();\n    }\n    waitForPendingWrites() {\n        return su(this.d_);\n    }\n    onSnapshotsInSync(t) {\n        return function(t, e) {\n            return Ka(Za(t = Bc(t, Xa)), Ha(e) ? e : {\n                next: e\n            });\n        }(this.d_, t);\n    }\n    get app() {\n        if (!this.Pd) throw new O(F.FAILED_PRECONDITION, \"Firestore was not initialized using the Firebase SDK. 'app' is not available\");\n        return this.Pd;\n    }\n    collection(t) {\n        try {\n            return new ih(this, zc(this.d_, t));\n        } catch (t) {\n            throw Ju(t, \"collection()\", \"Firestore.collection()\");\n        }\n    }\n    doc(t) {\n        try {\n            return new Hu(this, Jc(this.d_, t));\n        } catch (t) {\n            throw Ju(t, \"doc()\", \"Firestore.doc()\");\n        }\n    }\n    collectionGroup(t) {\n        try {\n            return new eh(this, Hc(this.d_, t));\n        } catch (t) {\n            throw Ju(t, \"collectionGroup()\", \"Firestore.collectionGroup()\");\n        }\n    }\n    runTransaction(t) {\n        return function(t, e) {\n            return Wa(Za(t), (n => e(new ku(t, n))));\n        }(this.d_, (e => t(new ju(this, e))));\n    }\n    batch() {\n        return Za(this.d_), new Gu(new Fu(this.d_, (t => xu(this.d_, t))));\n    }\n    loadBundle(t) {\n        throw new O(F.FAILED_PRECONDITION, '\"loadBundle()\" does not exist, have you imported \"firebase/firestore/bundle\"?');\n    }\n    namedQuery(t) {\n        throw new O(F.FAILED_PRECONDITION, '\"namedQuery()\" does not exist, have you imported \"firebase/firestore/bundle\"?');\n    }\n}\n\nclass Ku extends ru {\n    constructor(t) {\n        super(), this.firestore = t;\n    }\n    Wf(t) {\n        return new $u(new k(t));\n    }\n    jf(t) {\n        const e = this.Jf(t, this.firestore.I_);\n        return Hu.yd(e, this.firestore, /* converter= */ null);\n    }\n}\n\nfunction Wu(t) {\n    var e;\n    e = t, m.setLogLevel(e);\n}\n\n/**\n * A reference to a transaction.\n */ class ju extends Nc {\n    constructor(t, e) {\n        super(e), this.Yf = t, this.Xf = new Ku(t);\n    }\n    get(t) {\n        const e = rh(t);\n        return this.d_.get(e).then((t => new Zu(this.Yf, new gu(this.Yf.d_, this.Xf, t.S_, t.Zf, t.metadata, e.v_))));\n    }\n    set(t, e, n) {\n        const s = rh(t);\n        return n ? (Oc(\"Transaction.set\", n), this.d_.set(s, e, n)) : this.d_.set(s, e), \n        this;\n    }\n    update(t, e, n, ...s) {\n        const i = rh(t);\n        return 2 === arguments.length ? this.d_.update(i, e) : this.d_.update(i, e, n, ...s), \n        this;\n    }\n    delete(t) {\n        const e = rh(t);\n        return this.d_.delete(e), this;\n    }\n}\n\nclass Gu extends Nc {\n    set(t, e, n) {\n        const s = rh(t);\n        return n ? (Oc(\"WriteBatch.set\", n), this.d_.set(s, e, n)) : this.d_.set(s, e), \n        this;\n    }\n    update(t, e, n, ...s) {\n        const i = rh(t);\n        return 2 === arguments.length ? this.d_.update(i, e) : this.d_.update(i, e, n, ...s), \n        this;\n    }\n    delete(t) {\n        const e = rh(t);\n        return this.d_.delete(e), this;\n    }\n    commit() {\n        return this.d_.commit();\n    }\n}\n\n/**\n * Wraps a `PublicFirestoreDataConverter` translating the types from the\n * experimental SDK into corresponding types from the Classic SDK before passing\n * them to the wrapped converter.\n */ class zu extends Nc {\n    constructor(t, e, n) {\n        super(n), this.Yf = t, this.Xf = e;\n    }\n    fromFirestore(t, e) {\n        const n = new Vu(this.Yf.d_, this.Xf, t.S_, t.Zf, t.metadata, \n        /* converter= */ null);\n        return this.d_.fromFirestore(new th(this.Yf, n), null != e ? e : {});\n    }\n    toFirestore(t, e) {\n        return e ? this.d_.toFirestore(t, e) : this.d_.toFirestore(t);\n    }\n    // Use the same instance of `FirestoreDataConverter` for the given instances\n    // of `Firestore` and `PublicFirestoreDataConverter` so that isEqual() will\n    // compare equal for two objects created with the same converter instance.\n    static gd(t, e) {\n        const n = zu.Vd;\n        let s = n.get(t);\n        s || (s = new WeakMap, n.set(t, s));\n        let i = s.get(e);\n        return i || (i = new zu(t, new Ku(t), e), s.set(e, i)), i;\n    }\n}\n\nzu.Vd = new WeakMap;\n\n/**\n * A reference to a particular document in a collection in the database.\n */\nclass Hu extends Nc {\n    constructor(t, e) {\n        super(e), this.firestore = t, this.Xf = new Ku(t);\n    }\n    static pd(t, e, n) {\n        if (t.length % 2 != 0) throw new O(F.INVALID_ARGUMENT, `Invalid document reference. Document references must have an even number of segments, but ${t.rt()} has ${t.length}`);\n        return new Hu(e, new Wc(e.d_, n, new J(t)));\n    }\n    static yd(t, e, n) {\n        return new Hu(e, new Wc(e.d_, n, t));\n    }\n    get id() {\n        return this.d_.id;\n    }\n    get parent() {\n        return new ih(this.firestore, this.d_.parent);\n    }\n    get path() {\n        return this.d_.path;\n    }\n    collection(t) {\n        try {\n            return new ih(this.firestore, zc(this.d_, t));\n        } catch (t) {\n            throw Ju(t, \"collection()\", \"DocumentReference.collection()\");\n        }\n    }\n    isEqual(t) {\n        return t instanceof Nc && (t = t.d_), t instanceof Wc && Yc(this.d_, t);\n    }\n    set(t, e) {\n        e = Oc(\"DocumentReference.set\", e);\n        try {\n            return function(t, e, n) {\n                t = Bc(t, Wc);\n                const s = Bc(t.firestore, Xa), i = Ru(t.v_, e, n);\n                return xu(s, [ ca(oa(s), \"setDoc\", t.S_, i, null !== t.v_, n).F_(t.S_, Oe.Kt()) ]);\n            }(this.d_, t, e);\n        } catch (t) {\n            throw Ju(t, \"setDoc()\", \"DocumentReference.set()\");\n        }\n    }\n    update(t, e, ...n) {\n        try {\n            return 1 === arguments.length ? Du(this.d_, t) : Du(this.d_, t, e, ...n);\n        } catch (t) {\n            throw Ju(t, \"updateDoc()\", \"DocumentReference.update()\");\n        }\n    }\n    delete() {\n        return xu(Bc((t = this.d_).firestore, Xa), [ new He(t.S_, Oe.Kt()) ]);\n        var t;\n        /**\n * Add a new document to specified `CollectionReference` with the given data,\n * assigning it a document ID automatically.\n *\n * @param reference - A reference to the collection to add this document to.\n * @param data - An Object containing the data for the new document.\n * @returns A Promise resolved with a `DocumentReference` pointing to the\n * newly created document after it has been written to the backend (Note that it\n * won't resolve while you're offline).\n */    }\n    onSnapshot(...t) {\n        const e = Yu(t), n = Xu(t, (t => new Zu(this.firestore, new gu(this.firestore.d_, this.Xf, t.S_, t.Zf, t.metadata, this.d_.v_))));\n        return Cu(this.d_, e, n);\n    }\n    get(t) {\n        let e;\n        return e = \"cache\" === (null == t ? void 0 : t.source) ? function(t) {\n            t = Bc(t, Wc);\n            const e = Bc(t.firestore, Xa), n = Za(e), s = new Su(e);\n            return Ba(n, t.S_).then((n => new gu(e, s, t.S_, n, new yu(n instanceof vt && n.Vt, \n            /* fromCache= */ !0), t.v_)));\n        }\n        /**\n * Reads the document referred to by this `DocumentReference` from the server.\n * Returns an error if the network is not available.\n *\n * @returns A Promise resolved with a `DocumentSnapshot` containing the\n * current document contents.\n */ (this.d_) : \"server\" === (null == t ? void 0 : t.source) ? function(t) {\n            t = Bc(t, Wc);\n            const e = Bc(t.firestore, Xa);\n            return qa(Za(e), t.S_, {\n                source: \"server\"\n            }).then((n => Nu(e, t, n)));\n        }\n        /**\n * Executes the query and returns the results as a `QuerySnapshot`.\n *\n * Note: `getDocs()` attempts to provide up-to-date data when possible by\n * waiting for data from the server, but it may return cached data or fail if\n * you are offline and the server cannot be reached. To specify this behavior,\n * invoke {@link getDocsFromCache} or {@link getDocsFromServer}.\n *\n * @returns A Promise that will be resolved with the results of the query.\n */ (this.d_) : function(t) {\n            t = Bc(t, Wc);\n            const e = Bc(t.firestore, Xa);\n            return qa(Za(e), t.S_).then((n => Nu(e, t, n)));\n        }(this.d_), e.then((t => new Zu(this.firestore, new gu(this.firestore.d_, this.Xf, t.S_, t.Zf, t.metadata, this.d_.v_))));\n    }\n    withConverter(t) {\n        return new Hu(this.firestore, this.d_.withConverter(zu.gd(this.firestore, t)));\n    }\n}\n\n/**\n * Replaces the function name in an error thrown by the firestore-exp API\n * with the function names used in the classic API.\n */ function Ju(t, e, n) {\n    return t.message = t.message.replace(e, n), t;\n}\n\n/**\n * Iterates the list of arguments from an `onSnapshot` call and returns the\n * first argument that may be an `SnapshotListenOptions` object. Returns an\n * empty object if none is found.\n */ function Yu(t) {\n    for (const e of t) if (\"object\" == typeof e && !Ha(e)) return e;\n    return {};\n}\n\n/**\n * Creates an observer that can be passed to the firestore-exp SDK. The\n * observer converts all observed values into the format expected by the classic\n * SDK.\n *\n * @param args - The list of arguments from an `onSnapshot` call.\n * @param wrapper - The function that converts the firestore-exp type into the\n * type used by this shim.\n */ function Xu(t, e) {\n    var n, s;\n    let i;\n    return i = Ha(t[0]) ? t[0] : Ha(t[1]) ? t[1] : \"function\" == typeof t[0] ? {\n        next: t[0],\n        error: t[1],\n        complete: t[2]\n    } : {\n        next: t[1],\n        error: t[2],\n        complete: t[3]\n    }, {\n        next: t => {\n            i.next && i.next(e(t));\n        },\n        error: null === (n = i.error) || void 0 === n ? void 0 : n.bind(i),\n        complete: null === (s = i.complete) || void 0 === s ? void 0 : s.bind(i)\n    };\n}\n\nclass Zu extends Nc {\n    constructor(t, e) {\n        super(e), this.Yf = t;\n    }\n    get ref() {\n        return new Hu(this.Yf, this.d_.ref);\n    }\n    get id() {\n        return this.d_.id;\n    }\n    get metadata() {\n        return this.d_.metadata;\n    }\n    get exists() {\n        return this.d_.exists();\n    }\n    data(t) {\n        return this.d_.data(t);\n    }\n    get(t, e) {\n        return this.d_.get(t, e);\n    }\n    isEqual(t) {\n        return vu(this.d_, t.d_);\n    }\n}\n\nclass th extends Zu {\n    data(t) {\n        return this.d_.data(t);\n    }\n}\n\nclass eh extends Nc {\n    constructor(t, e) {\n        super(e), this.firestore = t, this.Xf = new Ku(t);\n    }\n    where(t, e, n) {\n        try {\n            // The \"as string\" cast is a little bit of a hack. `where` accepts the\n            // FieldPath Compat type as input, but is not typed as such in order to\n            // not expose this via our public typings file.\n            return new eh(this.firestore, lu(this.d_, function(t, e, n) {\n                const s = e, i = au(\"where\", t);\n                return new _u(i, s, n);\n            }(t, e, n)));\n        } catch (t) {\n            throw Ju(t, /(orderBy|where)\\(\\)/, \"Query.$1()\");\n        }\n    }\n    orderBy(t, e) {\n        try {\n            // The \"as string\" cast is a little bit of a hack. `orderBy` accepts the\n            // FieldPath Compat type as input, but is not typed as such in order to\n            // not expose this via our public typings file.\n            return new eh(this.firestore, lu(this.d_, function(t, e = \"asc\") {\n                const n = e, s = au(\"orderBy\", t);\n                return new fu(s, n);\n            }(t, e)));\n        } catch (t) {\n            throw Ju(t, /(orderBy|where)\\(\\)/, \"Query.$1()\");\n        }\n    }\n    limit(t) {\n        try {\n            return new eh(this.firestore, lu(this.d_, function(t) {\n                return qc(\"limit\", t), new du(\"limit\", t, \"F\" /* First */);\n            }\n            /**\n * Creates a `QueryConstraint` that only returns the last matching documents.\n *\n * You must specify at least one `orderBy` clause for `limitToLast` queries,\n * otherwise an exception will be thrown during execution.\n *\n * @param limit - The maximum number of items to return.\n * @returns The created `Query`.\n */ (t)));\n        } catch (t) {\n            throw Ju(t, \"limit()\", \"Query.limit()\");\n        }\n    }\n    limitToLast(t) {\n        try {\n            return new eh(this.firestore, lu(this.d_, function(t) {\n                return qc(\"limitToLast\", t), new du(\"limitToLast\", t, \"L\" /* Last */);\n            }(t)));\n        } catch (t) {\n            throw Ju(t, \"limitToLast()\", \"Query.limitToLast()\");\n        }\n    }\n    startAt(...t) {\n        try {\n            return new eh(this.firestore, lu(this.d_, function(...t) {\n                return new wu(\"startAt\", t, /*before=*/ !0);\n            }(...t)));\n        } catch (t) {\n            throw Ju(t, \"startAt()\", \"Query.startAt()\");\n        }\n    }\n    startAfter(...t) {\n        try {\n            return new eh(this.firestore, lu(this.d_, function(...t) {\n                return new wu(\"startAfter\", t, \n                /*before=*/ !1);\n            }(...t)));\n        } catch (t) {\n            throw Ju(t, \"startAfter()\", \"Query.startAfter()\");\n        }\n    }\n    endBefore(...t) {\n        try {\n            return new eh(this.firestore, lu(this.d_, function(...t) {\n                return new Eu(\"endBefore\", t, /*before=*/ !0);\n            }(...t)));\n        } catch (t) {\n            throw Ju(t, \"endBefore()\", \"Query.endBefore()\");\n        }\n    }\n    endAt(...t) {\n        try {\n            return new eh(this.firestore, lu(this.d_, function(...t) {\n                return new Eu(\"endAt\", t, /*before=*/ !1);\n            }(...t)));\n        } catch (t) {\n            throw Ju(t, \"endAt()\", \"Query.endAt()\");\n        }\n    }\n    isEqual(t) {\n        return Xc(this.d_, t.d_);\n    }\n    get(t) {\n        let e;\n        return e = \"cache\" === (null == t ? void 0 : t.source) ? \n        /**\n * Executes the query and returns the results as a `QuerySnapshot` from cache.\n * Returns an error if the document is not currently cached.\n *\n * @returns A Promise that will be resolved with the results of the query.\n */\n        function(t) {\n            t = Bc(t, jc);\n            const e = Bc(t.firestore, Xa), n = Za(e), s = new Su(e);\n            return Ua(n, t.C_).then((n => new pu(e, s, t, n)));\n        }\n        /**\n * Executes the query and returns the results as a `QuerySnapshot` from the\n * server. Returns an error if the network is not available.\n *\n * @returns A Promise that will be resolved with the results of the query.\n */ (this.d_) : \"server\" === (null == t ? void 0 : t.source) ? function(t) {\n            t = Bc(t, jc);\n            const e = Bc(t.firestore, Xa), n = Za(e), s = new Su(e);\n            return Qa(n, t.C_, {\n                source: \"server\"\n            }).then((n => new pu(e, s, t, n)));\n        }(this.d_) : function(t) {\n            t = Bc(t, jc);\n            const e = Bc(t.firestore, Xa), n = Za(e), s = new Su(e);\n            return uu(t.C_), Qa(n, t.C_).then((n => new pu(e, s, t, n)));\n        }(this.d_), e.then((t => new sh(this.firestore, new pu(this.firestore.d_, this.Xf, this.d_, t._d))));\n    }\n    onSnapshot(...t) {\n        const e = Yu(t), n = Xu(t, (t => new sh(this.firestore, new pu(this.firestore.d_, this.Xf, this.d_, t._d))));\n        return Cu(this.d_, e, n);\n    }\n    withConverter(t) {\n        return new eh(this.firestore, this.d_.withConverter(zu.gd(this.firestore, t)));\n    }\n}\n\nclass nh extends Nc {\n    constructor(t, e) {\n        super(e), this.Yf = t;\n    }\n    get type() {\n        return this.d_.type;\n    }\n    get doc() {\n        return new th(this.Yf, this.d_.doc);\n    }\n    get oldIndex() {\n        return this.d_.oldIndex;\n    }\n    get newIndex() {\n        return this.d_.newIndex;\n    }\n}\n\nclass sh extends Nc {\n    constructor(t, e) {\n        super(e), this.Yf = t;\n    }\n    get query() {\n        return new eh(this.Yf, this.d_.query);\n    }\n    get metadata() {\n        return this.d_.metadata;\n    }\n    get size() {\n        return this.d_.size;\n    }\n    get empty() {\n        return this.d_.empty;\n    }\n    get docs() {\n        return this.d_.docs.map((t => new th(this.Yf, t)));\n    }\n    docChanges(t) {\n        return this.d_.docChanges(t).map((t => new nh(this.Yf, t)));\n    }\n    forEach(t, e) {\n        this.d_.forEach((n => {\n            t.call(e, new th(this.Yf, n));\n        }));\n    }\n    isEqual(t) {\n        return vu(this.d_, t.d_);\n    }\n}\n\nclass ih extends eh {\n    constructor(t, e) {\n        super(t, e), this.firestore = t, this.d_ = e;\n    }\n    get id() {\n        return this.d_.id;\n    }\n    get path() {\n        return this.d_.path;\n    }\n    get parent() {\n        const t = this.d_.parent;\n        return t ? new Hu(this.firestore, t) : null;\n    }\n    doc(t) {\n        try {\n            return new Hu(this.firestore, void 0 === t ? Jc(this.d_) : Jc(this.d_, t));\n        } catch (t) {\n            throw Ju(t, \"doc()\", \"CollectionReference.doc()\");\n        }\n    }\n    add(t) {\n        return function(t, e) {\n            const n = Bc(t.firestore, Xa), s = Jc(t), i = Ru(t.v_, e);\n            return xu(n, [ ca(oa(t.firestore), \"addDoc\", s.S_, i, null !== t.v_, {}).F_(s.S_, Oe.exists(!1)) ]).then((() => s));\n        }(this.d_, t).then((t => new Hu(this.firestore, t)));\n    }\n    isEqual(t) {\n        return Yc(this.d_, t.d_);\n    }\n    withConverter(t) {\n        return new ih(this.firestore, this.d_.withConverter(zu.gd(this.firestore, t)));\n    }\n}\n\nfunction rh(t) {\n    return t instanceof Nc && (t = t.d_), Bc(t, Wc);\n}\n\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n// The objects that are a part of this API are exposed to third-parties as\n// compiled javascript so we want to flag our private members with a leading\n// underscore to discourage their use.\n/**\n * A `FieldPath` refers to a field in a document. The path may consist of a\n * single field name (referring to a top-level field in the document), or a list\n * of field names (referring to a nested field in the document).\n */ class oh extends Nc {\n    /**\n     * Creates a FieldPath from the provided field names. If more than one field\n     * name is provided, the path will point to a nested field in a document.\n     *\n     * @param fieldNames - A list of field names.\n     */\n    constructor(...t) {\n        super(new Cc(...t));\n    }\n    static documentId() {\n        /**\n         * Internal Note: The backend doesn't technically support querying by\n         * document ID. Instead it queries by the entire document name (full path\n         * included), but in the cases we currently support documentId(), the net\n         * effect is the same.\n         */\n        return new oh(H.ht().rt());\n    }\n    isEqual(t) {\n        return t instanceof Nc && (t = t.d_), t instanceof Cc && this.d_.f_.isEqual(t.f_);\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * Returns a sentinel for use with {@link updateDoc} or\n * {@link setDoc} with `{merge: true}` to mark a field for deletion.\n */\n/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nclass ch extends Nc {\n    static serverTimestamp() {\n        const t = new ha(\"serverTimestamp\");\n        return t._methodName = \"FieldValue.serverTimestamp\", new ch(t);\n    }\n    static delete() {\n        const t = new aa(\"deleteField\");\n        return t._methodName = \"FieldValue.delete\", new ch(t);\n    }\n    static arrayUnion(...t) {\n        const e = \n        /**\n * Returns a special value that can be used with {@link setDoc} or {@link\n * updateDoc} that tells the server to union the given elements with any array\n * value that already exists on the server. Each specified element that doesn't\n * already exist in the array will be added to the end. If the field being\n * modified is not already an array it will be overwritten with an array\n * containing exactly the specified elements.\n *\n * @param elements - The elements to union into the array.\n * @returns The `FieldValue` sentinel for use in a call to `setDoc()` or\n * `updateDoc()`.\n */\n        function(...t) {\n            // NOTE: We don't actually parse the data until it's used in set() or\n            // update() since we'd need the Firestore instance to do this.\n            return new la(\"arrayUnion\", t);\n        }\n        /**\n * Returns a special value that can be used with {@link (setDoc:1)} or {@link\n * updateDoc} that tells the server to remove the given elements from any\n * array value that already exists on the server. All instances of each element\n * specified will be removed from the array. If the field being modified is not\n * already an array it will be overwritten with an empty array.\n *\n * @param elements - The elements to remove from the array.\n * @returns The `FieldValue` sentinel for use in a call to `setDoc()` or\n * `updateDoc()`\n */ (...t);\n        return e._methodName = \"FieldValue.arrayUnion\", new ch(e);\n    }\n    static arrayRemove(...t) {\n        const e = function(...t) {\n            // NOTE: We don't actually parse the data until it's used in set() or\n            // update() since we'd need the Firestore instance to do this.\n            return new _a(\"arrayRemove\", t);\n        }\n        /**\n * Returns a special value that can be used with {@link setDoc} or {@link\n * updateDoc} that tells the server to increment the field's current value by\n * the given value.\n *\n * If either the operand or the current field value uses floating point\n * precision, all arithmetic follows IEEE 754 semantics. If both values are\n * integers, values outside of JavaScript's safe number range\n * (`Number.MIN_SAFE_INTEGER` to `Number.MAX_SAFE_INTEGER`) are also subject to\n * precision loss. Furthermore, once processed by the Firestore backend, all\n * integer operations are capped between -2^63 and 2^63-1.\n *\n * If the current field value is not of type `number`, or if the field does not\n * yet exist, the transformation sets the field to the given value.\n *\n * @param n - The value to increment by.\n * @returns The `FieldValue` sentinel for use in a call to `setDoc()` or\n * `updateDoc()`\n */ (...t);\n        return e._methodName = \"FieldValue.arrayRemove\", new ch(e);\n    }\n    static increment(t) {\n        const e = function(t) {\n            return new fa(\"increment\", t);\n        }(t);\n        return e._methodName = \"FieldValue.increment\", new ch(e);\n    }\n    isEqual(t) {\n        return this.d_.isEqual(t.d_);\n    }\n}\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */ function ah(t) {\n    /**\n * Loads a Firestore bundle into the local cache.\n *\n * @param firestore - The `Firestore` instance to load bundles for for.\n * @param bundleData - An object representing the bundle to be loaded. Valid objects are\n *   `ArrayBuffer`, `ReadableStream<Uint8Array>` or `string`.\n *\n * @return\n *   A `LoadBundleTask` object, which notifies callers with progress updates, and completion\n *   or error events. It can be used as a `Promise<LoadBundleTaskProgress>`.\n */\n    return function(t, e) {\n        const n = Za(t = Bc(t, Xa)), s = new Ja;\n        return ja(n, t.I_, e, s), s;\n    }\n    /**\n * Reads a Firestore `Query` from local cache, identified by the given name.\n *\n * The named queries are packaged  into bundles on the server side (along\n * with resulting documents), and loaded to local cache using `loadBundle`. Once in local\n * cache, use this method to extract a `Query` by name.\n */ (this.d_, t);\n}\n\nfunction uh(t) {\n    return (e = this.d_, n = t, Ga(Za(e = Bc(e, Xa)), n).then((t => t ? new jc(e, null, t.query) : null))).then((t => t ? new eh(this, t) : null));\n    var e, n;\n}\n\nexport { $u as Blob, Ya as CACHE_SIZE_UNLIMITED, ih as CollectionReference, Hu as DocumentReference, Zu as DocumentSnapshot, Xa as ExpFirebaseFirestore, oh as FieldPath, ch as FieldValue, Qu as Firestore, Zc as GeoPoint, Uu as IndexedDbPersistenceProvider, qu as MemoryPersistenceProvider, eh as Query, th as QueryDocumentSnapshot, sh as QuerySnapshot, K as Timestamp, ju as Transaction, Gu as WriteBatch, ah as loadBundle, uh as namedQuery, Wu as setLogLevel };\n//# sourceMappingURL=prebuilt.js.map\n","import { formatMuiErrorMessage as _formatMuiErrorMessage } from \"@material-ui/utils\";\n\n/* eslint-disable no-use-before-define */\n\n/**\n * Returns a number whose value is limited to the given range.\n *\n * @param {number} value The value to be clamped\n * @param {number} min The lower boundary of the output range\n * @param {number} max The upper boundary of the output range\n * @returns {number} A number in the range [min, max]\n */\nfunction clamp(value) {\n  var min = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;\n  var max = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 1;\n\n  if (process.env.NODE_ENV !== 'production') {\n    if (value < min || value > max) {\n      console.error(\"Material-UI: The value provided \".concat(value, \" is out of range [\").concat(min, \", \").concat(max, \"].\"));\n    }\n  }\n\n  return Math.min(Math.max(min, value), max);\n}\n/**\n * Converts a color from CSS hex format to CSS rgb format.\n *\n * @param {string} color - Hex color, i.e. #nnn or #nnnnnn\n * @returns {string} A CSS rgb color string\n */\n\n\nexport function hexToRgb(color) {\n  color = color.substr(1);\n  var re = new RegExp(\".{1,\".concat(color.length >= 6 ? 2 : 1, \"}\"), 'g');\n  var colors = color.match(re);\n\n  if (colors && colors[0].length === 1) {\n    colors = colors.map(function (n) {\n      return n + n;\n    });\n  }\n\n  return colors ? \"rgb\".concat(colors.length === 4 ? 'a' : '', \"(\").concat(colors.map(function (n, index) {\n    return index < 3 ? parseInt(n, 16) : Math.round(parseInt(n, 16) / 255 * 1000) / 1000;\n  }).join(', '), \")\") : '';\n}\n\nfunction intToHex(int) {\n  var hex = int.toString(16);\n  return hex.length === 1 ? \"0\".concat(hex) : hex;\n}\n/**\n * Converts a color from CSS rgb format to CSS hex format.\n *\n * @param {string} color - RGB color, i.e. rgb(n, n, n)\n * @returns {string} A CSS rgb color string, i.e. #nnnnnn\n */\n\n\nexport function rgbToHex(color) {\n  // Idempotent\n  if (color.indexOf('#') === 0) {\n    return color;\n  }\n\n  var _decomposeColor = decomposeColor(color),\n      values = _decomposeColor.values;\n\n  return \"#\".concat(values.map(function (n) {\n    return intToHex(n);\n  }).join(''));\n}\n/**\n * Converts a color from hsl format to rgb format.\n *\n * @param {string} color - HSL color values\n * @returns {string} rgb color values\n */\n\nexport function hslToRgb(color) {\n  color = decomposeColor(color);\n  var _color = color,\n      values = _color.values;\n  var h = values[0];\n  var s = values[1] / 100;\n  var l = values[2] / 100;\n  var a = s * Math.min(l, 1 - l);\n\n  var f = function f(n) {\n    var k = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : (n + h / 30) % 12;\n    return l - a * Math.max(Math.min(k - 3, 9 - k, 1), -1);\n  };\n\n  var type = 'rgb';\n  var rgb = [Math.round(f(0) * 255), Math.round(f(8) * 255), Math.round(f(4) * 255)];\n\n  if (color.type === 'hsla') {\n    type += 'a';\n    rgb.push(values[3]);\n  }\n\n  return recomposeColor({\n    type: type,\n    values: rgb\n  });\n}\n/**\n * Returns an object with the type and values of a color.\n *\n * Note: Does not support rgb % values.\n *\n * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()\n * @returns {object} - A MUI color object: {type: string, values: number[]}\n */\n\nexport function decomposeColor(color) {\n  // Idempotent\n  if (color.type) {\n    return color;\n  }\n\n  if (color.charAt(0) === '#') {\n    return decomposeColor(hexToRgb(color));\n  }\n\n  var marker = color.indexOf('(');\n  var type = color.substring(0, marker);\n\n  if (['rgb', 'rgba', 'hsl', 'hsla'].indexOf(type) === -1) {\n    throw new Error(process.env.NODE_ENV !== \"production\" ? \"Material-UI: Unsupported `\".concat(color, \"` color.\\nWe support the following formats: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla().\") : _formatMuiErrorMessage(3, color));\n  }\n\n  var values = color.substring(marker + 1, color.length - 1).split(',');\n  values = values.map(function (value) {\n    return parseFloat(value);\n  });\n  return {\n    type: type,\n    values: values\n  };\n}\n/**\n * Converts a color object with type and values to a string.\n *\n * @param {object} color - Decomposed color\n * @param {string} color.type - One of: 'rgb', 'rgba', 'hsl', 'hsla'\n * @param {array} color.values - [n,n,n] or [n,n,n,n]\n * @returns {string} A CSS color string\n */\n\nexport function recomposeColor(color) {\n  var type = color.type;\n  var values = color.values;\n\n  if (type.indexOf('rgb') !== -1) {\n    // Only convert the first 3 values to int (i.e. not alpha)\n    values = values.map(function (n, i) {\n      return i < 3 ? parseInt(n, 10) : n;\n    });\n  } else if (type.indexOf('hsl') !== -1) {\n    values[1] = \"\".concat(values[1], \"%\");\n    values[2] = \"\".concat(values[2], \"%\");\n  }\n\n  return \"\".concat(type, \"(\").concat(values.join(', '), \")\");\n}\n/**\n * Calculates the contrast ratio between two colors.\n *\n * Formula: https://www.w3.org/TR/WCAG20-TECHS/G17.html#G17-tests\n *\n * @param {string} foreground - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()\n * @param {string} background - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()\n * @returns {number} A contrast ratio value in the range 0 - 21.\n */\n\nexport function getContrastRatio(foreground, background) {\n  var lumA = getLuminance(foreground);\n  var lumB = getLuminance(background);\n  return (Math.max(lumA, lumB) + 0.05) / (Math.min(lumA, lumB) + 0.05);\n}\n/**\n * The relative brightness of any point in a color space,\n * normalized to 0 for darkest black and 1 for lightest white.\n *\n * Formula: https://www.w3.org/TR/WCAG20-TECHS/G17.html#G17-tests\n *\n * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()\n * @returns {number} The relative brightness of the color in the range 0 - 1\n */\n\nexport function getLuminance(color) {\n  color = decomposeColor(color);\n  var rgb = color.type === 'hsl' ? decomposeColor(hslToRgb(color)).values : color.values;\n  rgb = rgb.map(function (val) {\n    val /= 255; // normalized\n\n    return val <= 0.03928 ? val / 12.92 : Math.pow((val + 0.055) / 1.055, 2.4);\n  }); // Truncate at 3 digits\n\n  return Number((0.2126 * rgb[0] + 0.7152 * rgb[1] + 0.0722 * rgb[2]).toFixed(3));\n}\n/**\n * Darken or lighten a color, depending on its luminance.\n * Light colors are darkened, dark colors are lightened.\n *\n * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()\n * @param {number} coefficient=0.15 - multiplier in the range 0 - 1\n * @returns {string} A CSS color string. Hex input values are returned as rgb\n */\n\nexport function emphasize(color) {\n  var coefficient = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0.15;\n  return getLuminance(color) > 0.5 ? darken(color, coefficient) : lighten(color, coefficient);\n}\nvar warnedOnce = false;\n/**\n * Set the absolute transparency of a color.\n * Any existing alpha values are overwritten.\n *\n * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()\n * @param {number} value - value to set the alpha channel to in the range 0 -1\n * @returns {string} A CSS color string. Hex input values are returned as rgb\n *\n * @deprecated\n * Use `import { alpha } from '@material-ui/core/styles'` instead.\n */\n\nexport function fade(color, value) {\n  if (process.env.NODE_ENV !== 'production') {\n    if (!warnedOnce) {\n      warnedOnce = true;\n      console.error(['Material-UI: The `fade` color utility was renamed to `alpha` to better describe its functionality.', '', \"You should use `import { alpha } from '@material-ui/core/styles'`\"].join('\\n'));\n    }\n  }\n\n  return alpha(color, value);\n}\n/**\n * Set the absolute transparency of a color.\n * Any existing alpha value is overwritten.\n *\n * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()\n * @param {number} value - value to set the alpha channel to in the range 0-1\n * @returns {string} A CSS color string. Hex input values are returned as rgb\n */\n\nexport function alpha(color, value) {\n  color = decomposeColor(color);\n  value = clamp(value);\n\n  if (color.type === 'rgb' || color.type === 'hsl') {\n    color.type += 'a';\n  }\n\n  color.values[3] = value;\n  return recomposeColor(color);\n}\n/**\n * Darkens a color.\n *\n * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()\n * @param {number} coefficient - multiplier in the range 0 - 1\n * @returns {string} A CSS color string. Hex input values are returned as rgb\n */\n\nexport function darken(color, coefficient) {\n  color = decomposeColor(color);\n  coefficient = clamp(coefficient);\n\n  if (color.type.indexOf('hsl') !== -1) {\n    color.values[2] *= 1 - coefficient;\n  } else if (color.type.indexOf('rgb') !== -1) {\n    for (var i = 0; i < 3; i += 1) {\n      color.values[i] *= 1 - coefficient;\n    }\n  }\n\n  return recomposeColor(color);\n}\n/**\n * Lightens a color.\n *\n * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()\n * @param {number} coefficient - multiplier in the range 0 - 1\n * @returns {string} A CSS color string. Hex input values are returned as rgb\n */\n\nexport function lighten(color, coefficient) {\n  color = decomposeColor(color);\n  coefficient = clamp(coefficient);\n\n  if (color.type.indexOf('hsl') !== -1) {\n    color.values[2] += (100 - color.values[2]) * coefficient;\n  } else if (color.type.indexOf('rgb') !== -1) {\n    for (var i = 0; i < 3; i += 1) {\n      color.values[i] += (255 - color.values[i]) * coefficient;\n    }\n  }\n\n  return recomposeColor(color);\n}","import setPrototypeOf from \"@babel/runtime/helpers/esm/setPrototypeOf\";\nexport default function _inherits(subClass, superClass) {\n  if (typeof superClass !== \"function\" && superClass !== null) {\n    throw new TypeError(\"Super expression must either be null or a function\");\n  }\n\n  subClass.prototype = Object.create(superClass && superClass.prototype, {\n    constructor: {\n      value: subClass,\n      writable: true,\n      configurable: true\n    }\n  });\n  if (superClass) setPrototypeOf(subClass, superClass);\n}","export default function _typeof(obj) {\n  \"@babel/helpers - typeof\";\n\n  if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") {\n    _typeof = function _typeof(obj) {\n      return typeof obj;\n    };\n  } else {\n    _typeof = function _typeof(obj) {\n      return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n    };\n  }\n\n  return _typeof(obj);\n}","import _typeof from \"@babel/runtime/helpers/esm/typeof\";\nimport assertThisInitialized from \"@babel/runtime/helpers/esm/assertThisInitialized\";\nexport default function _possibleConstructorReturn(self, call) {\n  if (call && (_typeof(call) === \"object\" || typeof call === \"function\")) {\n    return call;\n  }\n\n  return assertThisInitialized(self);\n}","import getPrototypeOf from \"@babel/runtime/helpers/esm/getPrototypeOf\";\nimport isNativeReflectConstruct from \"@babel/runtime/helpers/esm/isNativeReflectConstruct\";\nimport possibleConstructorReturn from \"@babel/runtime/helpers/esm/possibleConstructorReturn\";\nexport default function _createSuper(Derived) {\n  var hasNativeReflectConstruct = isNativeReflectConstruct();\n  return function _createSuperInternal() {\n    var Super = getPrototypeOf(Derived),\n        result;\n\n    if (hasNativeReflectConstruct) {\n      var NewTarget = getPrototypeOf(this).constructor;\n      result = Reflect.construct(Super, arguments, NewTarget);\n    } else {\n      result = Super.apply(this, arguments);\n    }\n\n    return possibleConstructorReturn(this, result);\n  };\n}","var isProduction = process.env.NODE_ENV === 'production';\nfunction warning(condition, message) {\n  if (!isProduction) {\n    if (condition) {\n      return;\n    }\n\n    var text = \"Warning: \" + message;\n\n    if (typeof console !== 'undefined') {\n      console.warn(text);\n    }\n\n    try {\n      throw Error(text);\n    } catch (x) {}\n  }\n}\n\nexport default warning;\n","export default function ownerDocument(node) {\n  return node && node.ownerDocument || document;\n}","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Bootstrap for the Google JS Library (Closure).\n *\n * In uncompiled mode base.js will attempt to load Closure's deps file, unless\n * the global <code>CLOSURE_NO_DEPS</code> is set to true.  This allows projects\n * to include their own deps file(s) from different locations.\n *\n * Avoid including base.js more than once. This is strictly discouraged and not\n * supported. goog.require(...) won't work properly in that case.\n *\n * @provideGoog\n */\n\n\n/**\n * @define {boolean} Overridden to true by the compiler.\n */\nvar COMPILED = false;\n\n\n/**\n * Base namespace for the Closure library.  Checks to see goog is already\n * defined in the current scope before assigning to prevent clobbering if\n * base.js is loaded more than once.\n *\n * @const\n */\nvar goog = goog || {};\n\n/**\n * Reference to the global object.\n * https://www.ecma-international.org/ecma-262/9.0/index.html#sec-global-object\n *\n * More info on this implementation here:\n * https://docs.google.com/document/d/1NAeW4Wk7I7FV0Y2tcUFvQdGMc89k2vdgSXInw8_nvCI/edit\n *\n * @const\n * @suppress {undefinedVars} self won't be referenced unless `this` is falsy.\n * @type {!Global}\n */\ngoog.global =\n    // Check `this` first for backwards compatibility.\n    // Valid unless running as an ES module or in a function wrapper called\n    //   without setting `this` properly.\n    // Note that base.js can't usefully be imported as an ES module, but it may\n    // be compiled into bundles that are loadable as ES modules.\n    this ||\n    // https://developer.mozilla.org/en-US/docs/Web/API/Window/self\n    // For in-page browser environments and workers.\n    self;\n\n\n/**\n * A hook for overriding the define values in uncompiled mode.\n *\n * In uncompiled mode, `CLOSURE_UNCOMPILED_DEFINES` may be defined before\n * loading base.js.  If a key is defined in `CLOSURE_UNCOMPILED_DEFINES`,\n * `goog.define` will use the value instead of the default value.  This\n * allows flags to be overwritten without compilation (this is normally\n * accomplished with the compiler's \"define\" flag).\n *\n * Example:\n * <pre>\n *   var CLOSURE_UNCOMPILED_DEFINES = {'goog.DEBUG': false};\n * </pre>\n *\n * @type {Object<string, (string|number|boolean)>|undefined}\n */\ngoog.global.CLOSURE_UNCOMPILED_DEFINES;\n\n\n/**\n * A hook for overriding the define values in uncompiled or compiled mode,\n * like CLOSURE_UNCOMPILED_DEFINES but effective in compiled code.  In\n * uncompiled code CLOSURE_UNCOMPILED_DEFINES takes precedence.\n *\n * Also unlike CLOSURE_UNCOMPILED_DEFINES the values must be number, boolean or\n * string literals or the compiler will emit an error.\n *\n * While any @define value may be set, only those set with goog.define will be\n * effective for uncompiled code.\n *\n * Example:\n * <pre>\n *   var CLOSURE_DEFINES = {'goog.DEBUG': false} ;\n * </pre>\n *\n * @type {Object<string, (string|number|boolean)>|undefined}\n */\ngoog.global.CLOSURE_DEFINES;\n\n\n/**\n * Builds an object structure for the provided namespace path, ensuring that\n * names that already exist are not overwritten. For example:\n * \"a.b.c\" -> a = {};a.b={};a.b.c={};\n * Used by goog.provide and goog.exportSymbol.\n * @param {string} name The name of the object that this file defines.\n * @param {*=} object The object to expose at the end of the path.\n * @param {boolean=} overwriteImplicit If object is set and a previous call\n *     implicitly constructed the namespace given by name, this parameter\n *     controls whether object should overwrite the implicitly constructed\n *     namespace or be merged into it. Defaults to false.\n * @param {?Object=} objectToExportTo The object to add the path to; if this\n *     field is not specified, its value defaults to `goog.global`.\n * @private\n */\ngoog.exportPath_ = function(name, object, overwriteImplicit, objectToExportTo) {\n  var parts = name.split('.');\n  var cur = objectToExportTo || goog.global;\n\n  // Internet Explorer exhibits strange behavior when throwing errors from\n  // methods externed in this manner.  See the testExportSymbolExceptions in\n  // base_test.html for an example.\n  if (!(parts[0] in cur) && typeof cur.execScript != 'undefined') {\n    cur.execScript('var ' + parts[0]);\n  }\n\n  for (var part; parts.length && (part = parts.shift());) {\n    if (!parts.length && object !== undefined) {\n      if (!overwriteImplicit && goog.isObject(object) &&\n          goog.isObject(cur[part])) {\n        // Merge properties on object (the input parameter) with the existing\n        // implicitly defined namespace, so as to not clobber previously\n        // defined child namespaces.\n        for (var prop in object) {\n          if (object.hasOwnProperty(prop)) {\n            cur[part][prop] = object[prop];\n          }\n        }\n      } else {\n        // Either there is no existing implicit namespace, or overwriteImplicit\n        // is set to true, so directly assign object (the input parameter) to\n        // the namespace.\n        cur[part] = object;\n      }\n    } else if (cur[part] && cur[part] !== Object.prototype[part]) {\n      cur = cur[part];\n    } else {\n      cur = cur[part] = {};\n    }\n  }\n};\n\n\n/**\n * Defines a named value. In uncompiled mode, the value is retrieved from\n * CLOSURE_DEFINES or CLOSURE_UNCOMPILED_DEFINES if the object is defined and\n * has the property specified, and otherwise used the defined defaultValue.\n * When compiled the default can be overridden using the compiler options or the\n * value set in the CLOSURE_DEFINES object. Returns the defined value so that it\n * can be used safely in modules. Note that the value type MUST be either\n * boolean, number, or string.\n *\n * @param {string} name The distinguished name to provide.\n * @param {T} defaultValue\n * @return {T} The defined value.\n * @template T\n */\ngoog.define = function(name, defaultValue) {\n  var value = defaultValue;\n  if (!COMPILED) {\n    var uncompiledDefines = goog.global.CLOSURE_UNCOMPILED_DEFINES;\n    var defines = goog.global.CLOSURE_DEFINES;\n    if (uncompiledDefines &&\n        // Anti DOM-clobbering runtime check (b/37736576).\n        /** @type {?} */ (uncompiledDefines).nodeType === undefined &&\n        Object.prototype.hasOwnProperty.call(uncompiledDefines, name)) {\n      value = uncompiledDefines[name];\n    } else if (\n        defines &&\n        // Anti DOM-clobbering runtime check (b/37736576).\n        /** @type {?} */ (defines).nodeType === undefined &&\n        Object.prototype.hasOwnProperty.call(defines, name)) {\n      value = defines[name];\n    }\n  }\n  return value;\n};\n\n\n/**\n * @define {number} Integer year indicating the set of browser features that are\n * guaranteed to be present.  This is defined to include exactly features that\n * work correctly on all \"modern\" browsers that are stable on January 1 of the\n * specified year.  For example,\n * ```js\n * if (goog.FEATURESET_YEAR >= 2019) {\n *   // use APIs known to be available on all major stable browsers Jan 1, 2019\n * } else {\n *   // polyfill for older browsers\n * }\n * ```\n * This is intended to be the primary define for removing\n * unnecessary browser compatibility code (such as ponyfills and workarounds),\n * and should inform the default value for most other defines:\n * ```js\n * const ASSUME_NATIVE_PROMISE =\n *     goog.define('ASSUME_NATIVE_PROMISE', goog.FEATURESET_YEAR >= 2016);\n * ```\n *\n * The default assumption is that IE9 is the lowest supported browser, which was\n * first available Jan 1, 2012.\n *\n * TODO(user): Reference more thorough documentation when it's available.\n */\ngoog.FEATURESET_YEAR = goog.define('goog.FEATURESET_YEAR', 2012);\n\n\n/**\n * @define {boolean} DEBUG is provided as a convenience so that debugging code\n * that should not be included in a production. It can be easily stripped\n * by specifying --define goog.DEBUG=false to the Closure Compiler aka\n * JSCompiler. For example, most toString() methods should be declared inside an\n * \"if (goog.DEBUG)\" conditional because they are generally used for debugging\n * purposes and it is difficult for the JSCompiler to statically determine\n * whether they are used.\n */\ngoog.DEBUG = goog.define('goog.DEBUG', true);\n\n\n/**\n * @define {string} LOCALE defines the locale being used for compilation. It is\n * used to select locale specific data to be compiled in js binary. BUILD rule\n * can specify this value by \"--define goog.LOCALE=<locale_name>\" as a compiler\n * option.\n *\n * Take into account that the locale code format is important. You should use\n * the canonical Unicode format with hyphen as a delimiter. Language must be\n * lowercase, Language Script - Capitalized, Region - UPPERCASE.\n * There are few examples: pt-BR, en, en-US, sr-Latin-BO, zh-Hans-CN.\n *\n * See more info about locale codes here:\n * http://www.unicode.org/reports/tr35/#Unicode_Language_and_Locale_Identifiers\n *\n * For language codes you should use values defined by ISO 693-1. See it here\n * http://www.w3.org/WAI/ER/IG/ert/iso639.htm. There is only one exception from\n * this rule: the Hebrew language. For legacy reasons the old code (iw) should\n * be used instead of the new code (he).\n *\n */\ngoog.LOCALE = goog.define('goog.LOCALE', 'en');  // default to en\n\n\n/**\n * @define {boolean} Whether this code is running on trusted sites.\n *\n * On untrusted sites, several native functions can be defined or overridden by\n * external libraries like Prototype, Datejs, and JQuery and setting this flag\n * to false forces closure to use its own implementations when possible.\n *\n * If your JavaScript can be loaded by a third party site and you are wary about\n * relying on non-standard implementations, specify\n * \"--define goog.TRUSTED_SITE=false\" to the compiler.\n */\ngoog.TRUSTED_SITE = goog.define('goog.TRUSTED_SITE', true);\n\n\n/**\n * @define {boolean} Whether code that calls {@link goog.setTestOnly} should\n *     be disallowed in the compilation unit.\n */\ngoog.DISALLOW_TEST_ONLY_CODE =\n    goog.define('goog.DISALLOW_TEST_ONLY_CODE', COMPILED && !goog.DEBUG);\n\n\n/**\n * @define {boolean} Whether to use a Chrome app CSP-compliant method for\n *     loading scripts via goog.require. @see appendScriptSrcNode_.\n */\ngoog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING =\n    goog.define('goog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING', false);\n\n\n/**\n * Defines a namespace in Closure.\n *\n * A namespace may only be defined once in a codebase. It may be defined using\n * goog.provide() or goog.module().\n *\n * The presence of one or more goog.provide() calls in a file indicates\n * that the file defines the given objects/namespaces.\n * Provided symbols must not be null or undefined.\n *\n * In addition, goog.provide() creates the object stubs for a namespace\n * (for example, goog.provide(\"goog.foo.bar\") will create the object\n * goog.foo.bar if it does not already exist).\n *\n * Build tools also scan for provide/require/module statements\n * to discern dependencies, build dependency files (see deps.js), etc.\n *\n * @see goog.require\n * @see goog.module\n * @param {string} name Namespace provided by this file in the form\n *     \"goog.package.part\".\n * deprecated Use goog.module (see b/159289405)\n */\ngoog.provide = function(name) {\n  if (goog.isInModuleLoader_()) {\n    throw new Error('goog.provide cannot be used within a module.');\n  }\n  if (!COMPILED) {\n    // Ensure that the same namespace isn't provided twice.\n    // A goog.module/goog.provide maps a goog.require to a specific file\n    if (goog.isProvided_(name)) {\n      throw new Error('Namespace \"' + name + '\" already declared.');\n    }\n  }\n\n  goog.constructNamespace_(name);\n};\n\n\n/**\n * @param {string} name Namespace provided by this file in the form\n *     \"goog.package.part\".\n * @param {?Object=} object The object to embed in the namespace.\n * @param {boolean=} overwriteImplicit If object is set and a previous call\n *     implicitly constructed the namespace given by name, this parameter\n *     controls whether opt_obj should overwrite the implicitly constructed\n *     namespace or be merged into it. Defaults to false.\n * @private\n */\ngoog.constructNamespace_ = function(name, object, overwriteImplicit) {\n  if (!COMPILED) {\n    delete goog.implicitNamespaces_[name];\n\n    var namespace = name;\n    while ((namespace = namespace.substring(0, namespace.lastIndexOf('.')))) {\n      if (goog.getObjectByName(namespace)) {\n        break;\n      }\n      goog.implicitNamespaces_[namespace] = true;\n    }\n  }\n\n  goog.exportPath_(name, object, overwriteImplicit);\n};\n\n\n/**\n * Returns CSP nonce, if set for any script tag.\n * @param {?Window=} opt_window The window context used to retrieve the nonce.\n *     Defaults to global context.\n * @return {string} CSP nonce or empty string if no nonce is present.\n */\ngoog.getScriptNonce = function(opt_window) {\n  if (opt_window && opt_window != goog.global) {\n    return goog.getScriptNonce_(opt_window.document);\n  }\n  if (goog.cspNonce_ === null) {\n    goog.cspNonce_ = goog.getScriptNonce_(goog.global.document);\n  }\n  return goog.cspNonce_;\n};\n\n\n/**\n * According to the CSP3 spec a nonce must be a valid base64 string.\n * @see https://www.w3.org/TR/CSP3/#grammardef-base64-value\n * @private @const\n */\ngoog.NONCE_PATTERN_ = /^[\\w+/_-]+[=]{0,2}$/;\n\n\n/**\n * @private {?string}\n */\ngoog.cspNonce_ = null;\n\n\n/**\n * Returns CSP nonce, if set for any script tag.\n * @param {!Document} doc\n * @return {string} CSP nonce or empty string if no nonce is present.\n * @private\n */\ngoog.getScriptNonce_ = function(doc) {\n  var script = doc.querySelector && doc.querySelector('script[nonce]');\n  if (script) {\n    // Try to get the nonce from the IDL property first, because browsers that\n    // implement additional nonce protection features (currently only Chrome) to\n    // prevent nonce stealing via CSS do not expose the nonce via attributes.\n    // See https://github.com/whatwg/html/issues/2369\n    var nonce = script['nonce'] || script.getAttribute('nonce');\n    if (nonce && goog.NONCE_PATTERN_.test(nonce)) {\n      return nonce;\n    }\n  }\n  return '';\n};\n\n\n/**\n * Module identifier validation regexp.\n * Note: This is a conservative check, it is very possible to be more lenient,\n *   the primary exclusion here is \"/\" and \"\\\" and a leading \".\", these\n *   restrictions are intended to leave the door open for using goog.require\n *   with relative file paths rather than module identifiers.\n * @private\n */\ngoog.VALID_MODULE_RE_ = /^[a-zA-Z_$][a-zA-Z0-9._$]*$/;\n\n\n/**\n * Defines a module in Closure.\n *\n * Marks that this file must be loaded as a module and claims the namespace.\n *\n * A namespace may only be defined once in a codebase. It may be defined using\n * goog.provide() or goog.module().\n *\n * goog.module() has three requirements:\n * - goog.module may not be used in the same file as goog.provide.\n * - goog.module must be the first statement in the file.\n * - only one goog.module is allowed per file.\n *\n * When a goog.module annotated file is loaded, it is enclosed in\n * a strict function closure. This means that:\n * - any variables declared in a goog.module file are private to the file\n * (not global), though the compiler is expected to inline the module.\n * - The code must obey all the rules of \"strict\" JavaScript.\n * - the file will be marked as \"use strict\"\n *\n * NOTE: unlike goog.provide, goog.module does not declare any symbols by\n * itself. If declared symbols are desired, use\n * goog.module.declareLegacyNamespace().\n *\n *\n * See the public goog.module proposal: http://goo.gl/Va1hin\n *\n * @param {string} name Namespace provided by this file in the form\n *     \"goog.package.part\", is expected but not required.\n * @return {void}\n */\ngoog.module = function(name) {\n  if (typeof name !== 'string' || !name ||\n      name.search(goog.VALID_MODULE_RE_) == -1) {\n    throw new Error('Invalid module identifier');\n  }\n  if (!goog.isInGoogModuleLoader_()) {\n    throw new Error(\n        'Module ' + name + ' has been loaded incorrectly. Note, ' +\n        'modules cannot be loaded as normal scripts. They require some kind of ' +\n        'pre-processing step. You\\'re likely trying to load a module via a ' +\n        'script tag or as a part of a concatenated bundle without rewriting the ' +\n        'module. For more info see: ' +\n        'https://github.com/google/closure-library/wiki/goog.module:-an-ES6-module-like-alternative-to-goog.provide.');\n  }\n  if (goog.moduleLoaderState_.moduleName) {\n    throw new Error('goog.module may only be called once per module.');\n  }\n\n  // Store the module name for the loader.\n  goog.moduleLoaderState_.moduleName = name;\n  if (!COMPILED) {\n    // Ensure that the same namespace isn't provided twice.\n    // A goog.module/goog.provide maps a goog.require to a specific file\n    if (goog.isProvided_(name)) {\n      throw new Error('Namespace \"' + name + '\" already declared.');\n    }\n    delete goog.implicitNamespaces_[name];\n  }\n};\n\n\n/**\n * @param {string} name The module identifier.\n * @return {?} The module exports for an already loaded module or null.\n *\n * Note: This is not an alternative to goog.require, it does not\n * indicate a hard dependency, instead it is used to indicate\n * an optional dependency or to access the exports of a module\n * that has already been loaded.\n * @suppress {missingProvide}\n */\ngoog.module.get = function(name) {\n  return goog.module.getInternal_(name);\n};\n\n\n/**\n * @param {string} name The module identifier.\n * @return {?} The module exports for an already loaded module or null.\n * @private\n */\ngoog.module.getInternal_ = function(name) {\n  if (!COMPILED) {\n    if (name in goog.loadedModules_) {\n      return goog.loadedModules_[name].exports;\n    } else if (!goog.implicitNamespaces_[name]) {\n      var ns = goog.getObjectByName(name);\n      return ns != null ? ns : null;\n    }\n  }\n  return null;\n};\n\n\n/**\n * Types of modules the debug loader can load.\n * @enum {string}\n */\ngoog.ModuleType = {\n  ES6: 'es6',\n  GOOG: 'goog'\n};\n\n\n/**\n * @private {?{\n *   moduleName: (string|undefined),\n *   declareLegacyNamespace:boolean,\n *   type: ?goog.ModuleType\n * }}\n */\ngoog.moduleLoaderState_ = null;\n\n\n/**\n * @private\n * @return {boolean} Whether a goog.module or an es6 module is currently being\n *     initialized.\n */\ngoog.isInModuleLoader_ = function() {\n  return goog.isInGoogModuleLoader_() || goog.isInEs6ModuleLoader_();\n};\n\n\n/**\n * @private\n * @return {boolean} Whether a goog.module is currently being initialized.\n */\ngoog.isInGoogModuleLoader_ = function() {\n  return !!goog.moduleLoaderState_ &&\n      goog.moduleLoaderState_.type == goog.ModuleType.GOOG;\n};\n\n\n/**\n * @private\n * @return {boolean} Whether an es6 module is currently being initialized.\n */\ngoog.isInEs6ModuleLoader_ = function() {\n  var inLoader = !!goog.moduleLoaderState_ &&\n      goog.moduleLoaderState_.type == goog.ModuleType.ES6;\n\n  if (inLoader) {\n    return true;\n  }\n\n  var jscomp = goog.global['$jscomp'];\n\n  if (jscomp) {\n    // jscomp may not have getCurrentModulePath if this is a compiled bundle\n    // that has some of the runtime, but not all of it. This can happen if\n    // optimizations are turned on so the unused runtime is removed but renaming\n    // and Closure pass are off (so $jscomp is still named $jscomp and the\n    // goog.provide/require calls still exist).\n    if (typeof jscomp.getCurrentModulePath != 'function') {\n      return false;\n    }\n\n    // Bundled ES6 module.\n    return !!jscomp.getCurrentModulePath();\n  }\n\n  return false;\n};\n\n\n/**\n * Provide the module's exports as a globally accessible object under the\n * module's declared name.  This is intended to ease migration to goog.module\n * for files that have existing usages.\n * @suppress {missingProvide}\n */\ngoog.module.declareLegacyNamespace = function() {\n  if (!COMPILED && !goog.isInGoogModuleLoader_()) {\n    throw new Error(\n        'goog.module.declareLegacyNamespace must be called from ' +\n        'within a goog.module');\n  }\n  if (!COMPILED && !goog.moduleLoaderState_.moduleName) {\n    throw new Error(\n        'goog.module must be called prior to ' +\n        'goog.module.declareLegacyNamespace.');\n  }\n  goog.moduleLoaderState_.declareLegacyNamespace = true;\n};\n\n\n/**\n * Associates an ES6 module with a Closure module ID so that is available via\n * goog.require. The associated ID  acts like a goog.module ID - it does not\n * create any global names, it is merely available via goog.require /\n * goog.module.get / goog.forwardDeclare / goog.requireType. goog.require and\n * goog.module.get will return the entire module as if it was import *'d. This\n * allows Closure files to reference ES6 modules for the sake of migration.\n *\n * @param {string} namespace\n * @suppress {missingProvide}\n */\ngoog.declareModuleId = function(namespace) {\n  if (!COMPILED) {\n    if (!goog.isInEs6ModuleLoader_()) {\n      throw new Error(\n          'goog.declareModuleId may only be called from ' +\n          'within an ES6 module');\n    }\n    if (goog.moduleLoaderState_ && goog.moduleLoaderState_.moduleName) {\n      throw new Error(\n          'goog.declareModuleId may only be called once per module.');\n    }\n    if (namespace in goog.loadedModules_) {\n      throw new Error(\n          'Module with namespace \"' + namespace + '\" already exists.');\n    }\n  }\n  if (goog.moduleLoaderState_) {\n    // Not bundled - debug loading.\n    goog.moduleLoaderState_.moduleName = namespace;\n  } else {\n    // Bundled - not debug loading, no module loader state.\n    var jscomp = goog.global['$jscomp'];\n    if (!jscomp || typeof jscomp.getCurrentModulePath != 'function') {\n      throw new Error(\n          'Module with namespace \"' + namespace +\n          '\" has been loaded incorrectly.');\n    }\n    var exports = jscomp.require(jscomp.getCurrentModulePath());\n    goog.loadedModules_[namespace] = {\n      exports: exports,\n      type: goog.ModuleType.ES6,\n      moduleId: namespace\n    };\n  }\n};\n\n\n/**\n * Marks that the current file should only be used for testing, and never for\n * live code in production.\n *\n * In the case of unit tests, the message may optionally be an exact namespace\n * for the test (e.g. 'goog.stringTest'). The linter will then ignore the extra\n * provide (if not explicitly defined in the code).\n *\n * @param {string=} opt_message Optional message to add to the error that's\n *     raised when used in production code.\n */\ngoog.setTestOnly = function(opt_message) {\n  if (goog.DISALLOW_TEST_ONLY_CODE) {\n    opt_message = opt_message || '';\n    throw new Error(\n        'Importing test-only code into non-debug environment' +\n        (opt_message ? ': ' + opt_message : '.'));\n  }\n};\n\n\n/**\n * Forward declares a symbol. This is an indication to the compiler that the\n * symbol may be used in the source yet is not required and may not be provided\n * in compilation.\n *\n * The most common usage of forward declaration is code that takes a type as a\n * function parameter but does not need to require it. By forward declaring\n * instead of requiring, no hard dependency is made, and (if not required\n * elsewhere) the namespace may never be required and thus, not be pulled\n * into the JavaScript binary. If it is required elsewhere, it will be type\n * checked as normal.\n *\n * Before using goog.forwardDeclare, please read the documentation at\n * https://github.com/google/closure-compiler/wiki/Bad-Type-Annotation to\n * understand the options and tradeoffs when working with forward declarations.\n *\n * @param {string} name The namespace to forward declare in the form of\n *     \"goog.package.part\".\n * @deprecated See go/noforwarddeclaration, Use `goog.requireType` instead.\n */\ngoog.forwardDeclare = function(name) {};\n\n\n/**\n * Forward declare type information. Used to assign types to goog.global\n * referenced object that would otherwise result in unknown type references\n * and thus block property disambiguation.\n */\ngoog.forwardDeclare('Document');\ngoog.forwardDeclare('HTMLScriptElement');\ngoog.forwardDeclare('XMLHttpRequest');\n\n\nif (!COMPILED) {\n  /**\n   * Check if the given name has been goog.provided. This will return false for\n   * names that are available only as implicit namespaces.\n   * @param {string} name name of the object to look for.\n   * @return {boolean} Whether the name has been provided.\n   * @private\n   */\n  goog.isProvided_ = function(name) {\n    return (name in goog.loadedModules_) ||\n        (!goog.implicitNamespaces_[name] && goog.getObjectByName(name) != null);\n  };\n\n  /**\n   * Namespaces implicitly defined by goog.provide. For example,\n   * goog.provide('goog.events.Event') implicitly declares that 'goog' and\n   * 'goog.events' must be namespaces.\n   *\n   * @type {!Object<string, (boolean|undefined)>}\n   * @private\n   */\n  goog.implicitNamespaces_ = {'goog.module': true};\n\n  // NOTE: We add goog.module as an implicit namespace as goog.module is defined\n  // here and because the existing module package has not been moved yet out of\n  // the goog.module namespace. This satisifies both the debug loader and\n  // ahead-of-time dependency management.\n}\n\n\n/**\n * Returns an object based on its fully qualified external name.  The object\n * is not found if null or undefined.  If you are using a compilation pass that\n * renames property names beware that using this function will not find renamed\n * properties.\n *\n * @param {string} name The fully qualified name.\n * @param {Object=} opt_obj The object within which to look; default is\n *     |goog.global|.\n * @return {?} The value (object or primitive) or, if not found, null.\n */\ngoog.getObjectByName = function(name, opt_obj) {\n  var parts = name.split('.');\n  var cur = opt_obj || goog.global;\n  for (var i = 0; i < parts.length; i++) {\n    cur = cur[parts[i]];\n    if (cur == null) {\n      return null;\n    }\n  }\n  return cur;\n};\n\n\n/**\n * Adds a dependency from a file to the files it requires.\n * @param {string} relPath The path to the js file.\n * @param {!Array<string>} provides An array of strings with\n *     the names of the objects this file provides.\n * @param {!Array<string>} requires An array of strings with\n *     the names of the objects this file requires.\n * @param {boolean|!Object<string>=} opt_loadFlags Parameters indicating\n *     how the file must be loaded.  The boolean 'true' is equivalent\n *     to {'module': 'goog'} for backwards-compatibility.  Valid properties\n *     and values include {'module': 'goog'} and {'lang': 'es6'}.\n */\ngoog.addDependency = function(relPath, provides, requires, opt_loadFlags) {\n  if (!COMPILED && goog.DEPENDENCIES_ENABLED) {\n    goog.debugLoader_.addDependency(relPath, provides, requires, opt_loadFlags);\n  }\n};\n\n\n// NOTE(nnaze): The debug DOM loader was included in base.js as an original way\n// to do \"debug-mode\" development.  The dependency system can sometimes be\n// confusing, as can the debug DOM loader's asynchronous nature.\n//\n// With the DOM loader, a call to goog.require() is not blocking -- the script\n// will not load until some point after the current script.  If a namespace is\n// needed at runtime, it needs to be defined in a previous script, or loaded via\n// require() with its registered dependencies.\n//\n// User-defined namespaces may need their own deps file. For a reference on\n// creating a deps file, see:\n// Externally: https://developers.google.com/closure/library/docs/depswriter\n//\n// Because of legacy clients, the DOM loader can't be easily removed from\n// base.js.  Work was done to make it disableable or replaceable for\n// different environments (DOM-less JavaScript interpreters like Rhino or V8,\n// for example). See bootstrap/ for more information.\n\n\n/**\n * @define {boolean} Whether to enable the debug loader.\n *\n * If enabled, a call to goog.require() will attempt to load the namespace by\n * appending a script tag to the DOM (if the namespace has been registered).\n *\n * If disabled, goog.require() will simply assert that the namespace has been\n * provided (and depend on the fact that some outside tool correctly ordered\n * the script).\n */\ngoog.ENABLE_DEBUG_LOADER = goog.define('goog.ENABLE_DEBUG_LOADER', true);\n\n\n/**\n * @param {string} msg\n * @private\n */\ngoog.logToConsole_ = function(msg) {\n  if (goog.global.console) {\n    goog.global.console['error'](msg);\n  }\n};\n\n\n/**\n * Implements a system for the dynamic resolution of dependencies that works in\n * parallel with the BUILD system.\n *\n * Note that all calls to goog.require will be stripped by the compiler.\n *\n * @see goog.provide\n * @param {string} namespace Namespace (as was given in goog.provide,\n *     goog.module, or goog.declareModuleId) in the form\n *     \"goog.package.part\".\n * @return {?} If called within a goog.module or ES6 module file, the associated\n *     namespace or module otherwise null.\n */\ngoog.require = function(namespace) {\n  if (!COMPILED) {\n    // Might need to lazy load on old IE.\n    if (goog.ENABLE_DEBUG_LOADER) {\n      goog.debugLoader_.requested(namespace);\n    }\n\n    // If the object already exists we do not need to do anything.\n    if (goog.isProvided_(namespace)) {\n      if (goog.isInModuleLoader_()) {\n        return goog.module.getInternal_(namespace);\n      }\n    } else if (goog.ENABLE_DEBUG_LOADER) {\n      var moduleLoaderState = goog.moduleLoaderState_;\n      goog.moduleLoaderState_ = null;\n      try {\n        goog.debugLoader_.load_(namespace);\n      } finally {\n        goog.moduleLoaderState_ = moduleLoaderState;\n      }\n    }\n\n    return null;\n  }\n};\n\n\n/**\n * Requires a symbol for its type information. This is an indication to the\n * compiler that the symbol may appear in type annotations, yet it is not\n * referenced at runtime.\n *\n * When called within a goog.module or ES6 module file, the return value may be\n * assigned to or destructured into a variable, but it may not be otherwise used\n * in code outside of a type annotation.\n *\n * Note that all calls to goog.requireType will be stripped by the compiler.\n *\n * @param {string} namespace Namespace (as was given in goog.provide,\n *     goog.module, or goog.declareModuleId) in the form\n *     \"goog.package.part\".\n * @return {?}\n */\ngoog.requireType = function(namespace) {\n  // Return an empty object so that single-level destructuring of the return\n  // value doesn't crash at runtime when using the debug loader. Multi-level\n  // destructuring isn't supported.\n  return {};\n};\n\n\n/**\n * Path for included scripts.\n * @type {string}\n */\ngoog.basePath = '';\n\n\n/**\n * A hook for overriding the base path.\n * @type {string|undefined}\n */\ngoog.global.CLOSURE_BASE_PATH;\n\n\n/**\n * Whether to attempt to load Closure's deps file. By default, when uncompiled,\n * deps files will attempt to be loaded.\n * @type {boolean|undefined}\n */\ngoog.global.CLOSURE_NO_DEPS;\n\n\n/**\n * A function to import a single script. This is meant to be overridden when\n * Closure is being run in non-HTML contexts, such as web workers. It's defined\n * in the global scope so that it can be set before base.js is loaded, which\n * allows deps.js to be imported properly.\n *\n * The first parameter the script source, which is a relative URI. The second,\n * optional parameter is the script contents, in the event the script needed\n * transformation. It should return true if the script was imported, false\n * otherwise.\n * @type {(function(string, string=): boolean)|undefined}\n */\ngoog.global.CLOSURE_IMPORT_SCRIPT;\n\n\n/**\n * Null function used for default values of callbacks, etc.\n * @return {void} Nothing.\n * @deprecated use '()=>{}' or 'function(){}' instead.\n */\ngoog.nullFunction = function() {};\n\n\n/**\n * When defining a class Foo with an abstract method bar(), you can do:\n * Foo.prototype.bar = goog.abstractMethod\n *\n * Now if a subclass of Foo fails to override bar(), an error will be thrown\n * when bar() is invoked.\n *\n * @type {!Function}\n * @throws {Error} when invoked to indicate the method should be overridden.\n * @deprecated Use \"@abstract\" annotation instead of goog.abstractMethod in new\n *     code. See\n *     https://github.com/google/closure-compiler/wiki/@abstract-classes-and-methods\n */\ngoog.abstractMethod = function() {\n  throw new Error('unimplemented abstract method');\n};\n\n\n/**\n * Adds a `getInstance` static method that always returns the same\n * instance object.\n * @param {!Function} ctor The constructor for the class to add the static\n *     method to.\n * @suppress {missingProperties} 'instance_' isn't a property on 'Function'\n *     but we don't have a better type to use here.\n */\ngoog.addSingletonGetter = function(ctor) {\n  // instance_ is immediately set to prevent issues with sealed constructors\n  // such as are encountered when a constructor is returned as the export object\n  // of a goog.module in unoptimized code.\n  // Delcare type to avoid conformance violations that ctor.instance_ is unknown\n  /** @type {undefined|!Object} @suppress {underscore} */\n  ctor.instance_ = undefined;\n  ctor.getInstance = function() {\n    if (ctor.instance_) {\n      return ctor.instance_;\n    }\n    if (goog.DEBUG) {\n      // NOTE: JSCompiler can't optimize away Array#push.\n      goog.instantiatedSingletons_[goog.instantiatedSingletons_.length] = ctor;\n    }\n    // Cast to avoid conformance violations that ctor.instance_ is unknown\n    return /** @type {!Object|undefined} */ (ctor.instance_) = new ctor;\n  };\n};\n\n\n/**\n * All singleton classes that have been instantiated, for testing. Don't read\n * it directly, use the `goog.testing.singleton` module. The compiler\n * removes this variable if unused.\n * @type {!Array<!Function>}\n * @private\n */\ngoog.instantiatedSingletons_ = [];\n\n\n/**\n * @define {boolean} Whether to load goog.modules using `eval` when using\n * the debug loader.  This provides a better debugging experience as the\n * source is unmodified and can be edited using Chrome Workspaces or similar.\n * However in some environments the use of `eval` is banned\n * so we provide an alternative.\n */\ngoog.LOAD_MODULE_USING_EVAL = goog.define('goog.LOAD_MODULE_USING_EVAL', true);\n\n\n/**\n * @define {boolean} Whether the exports of goog.modules should be sealed when\n * possible.\n */\ngoog.SEAL_MODULE_EXPORTS = goog.define('goog.SEAL_MODULE_EXPORTS', goog.DEBUG);\n\n\n/**\n * The registry of initialized modules:\n * The module identifier or path to module exports map.\n * @private @const {!Object<string, {exports:?,type:string,moduleId:string}>}\n */\ngoog.loadedModules_ = {};\n\n\n/**\n * True if the debug loader enabled and used.\n * @const {boolean}\n */\ngoog.DEPENDENCIES_ENABLED = !COMPILED && goog.ENABLE_DEBUG_LOADER;\n\n\n/**\n * @define {string} How to decide whether to transpile.  Valid values\n * are 'always', 'never', and 'detect'.  The default ('detect') is to\n * use feature detection to determine which language levels need\n * transpilation.\n */\n// NOTE(sdh): we could expand this to accept a language level to bypass\n// detection: e.g. goog.TRANSPILE == 'es5' would transpile ES6 files but\n// would leave ES3 and ES5 files alone.\ngoog.TRANSPILE = goog.define('goog.TRANSPILE', 'detect');\n\n/**\n * @define {boolean} If true assume that ES modules have already been\n * transpiled by the jscompiler (in the same way that transpile.js would\n * transpile them - to jscomp modules). Useful only for servers that wish to use\n * the debug loader and transpile server side. Thus this is only respected if\n * goog.TRANSPILE is \"never\".\n */\ngoog.ASSUME_ES_MODULES_TRANSPILED =\n    goog.define('goog.ASSUME_ES_MODULES_TRANSPILED', false);\n\n\n/**\n * @define {string} If a file needs to be transpiled what the output language\n * should be. By default this is the highest language level this file detects\n * the current environment supports. Generally this flag should not be set, but\n * it could be useful to override. Example: If the current environment supports\n * ES6 then by default ES7+ files will be transpiled to ES6, unless this is\n * overridden.\n *\n * Valid values include: es3, es5, es6, es7, and es8. Anything not recognized\n * is treated as es3.\n *\n * Note that setting this value does not force transpilation. Just if\n * transpilation occurs this will be the output. So this is most useful when\n * goog.TRANSPILE is set to 'always' and then forcing the language level to be\n * something lower than what the environment detects.\n */\ngoog.TRANSPILE_TO_LANGUAGE = goog.define('goog.TRANSPILE_TO_LANGUAGE', '');\n\n\n/**\n * @define {string} Path to the transpiler.  Executing the script at this\n * path (relative to base.js) should define a function $jscomp.transpile.\n */\ngoog.TRANSPILER = goog.define('goog.TRANSPILER', 'transpile.js');\n\n\n/**\n * @package {?boolean}\n * Visible for testing.\n */\ngoog.hasBadLetScoping = null;\n\n\n/**\n * @return {boolean}\n * @package Visible for testing.\n */\ngoog.useSafari10Workaround = function() {\n  if (goog.hasBadLetScoping == null) {\n    var hasBadLetScoping;\n    try {\n      hasBadLetScoping = !eval(\n          '\"use strict\";' +\n          'let x = 1; function f() { return typeof x; };' +\n          'f() == \"number\";');\n    } catch (e) {\n      // Assume that ES6 syntax isn't supported.\n      hasBadLetScoping = false;\n    }\n    goog.hasBadLetScoping = hasBadLetScoping;\n  }\n  return goog.hasBadLetScoping;\n};\n\n\n/**\n * @param {string} moduleDef\n * @return {string}\n * @package Visible for testing.\n */\ngoog.workaroundSafari10EvalBug = function(moduleDef) {\n  return '(function(){' + moduleDef +\n      '\\n' +  // Terminate any trailing single line comment.\n      ';' +   // Terminate any trailing expression.\n      '})();\\n';\n};\n\n\n/**\n * @param {function(?):?|string} moduleDef The module definition.\n */\ngoog.loadModule = function(moduleDef) {\n  // NOTE: we allow function definitions to be either in the from\n  // of a string to eval (which keeps the original source intact) or\n  // in a eval forbidden environment (CSP) we allow a function definition\n  // which in its body must call `goog.module`, and return the exports\n  // of the module.\n  var previousState = goog.moduleLoaderState_;\n  try {\n    goog.moduleLoaderState_ = {\n      moduleName: '',\n      declareLegacyNamespace: false,\n      type: goog.ModuleType.GOOG\n    };\n    var origExports = {};\n    var exports = origExports;\n    if (typeof moduleDef === 'function') {\n      exports = moduleDef.call(undefined, exports);\n    } else if (typeof moduleDef === 'string') {\n      if (goog.useSafari10Workaround()) {\n        moduleDef = goog.workaroundSafari10EvalBug(moduleDef);\n      }\n\n      exports = goog.loadModuleFromSource_.call(undefined, exports, moduleDef);\n    } else {\n      throw new Error('Invalid module definition');\n    }\n\n    var moduleName = goog.moduleLoaderState_.moduleName;\n    if (typeof moduleName === 'string' && moduleName) {\n      // Don't seal legacy namespaces as they may be used as a parent of\n      // another namespace\n      if (goog.moduleLoaderState_.declareLegacyNamespace) {\n        // Whether exports was overwritten via default export assignment.\n        // This is important for legacy namespaces as it dictates whether\n        // previously a previously loaded implicit namespace should be clobbered\n        // or not.\n        var isDefaultExport = origExports !== exports;\n        goog.constructNamespace_(moduleName, exports, isDefaultExport);\n      } else if (\n          goog.SEAL_MODULE_EXPORTS && Object.seal &&\n          typeof exports == 'object' && exports != null) {\n        Object.seal(exports);\n      }\n\n      var data = {\n        exports: exports,\n        type: goog.ModuleType.GOOG,\n        moduleId: goog.moduleLoaderState_.moduleName\n      };\n      goog.loadedModules_[moduleName] = data;\n    } else {\n      throw new Error('Invalid module name \\\"' + moduleName + '\\\"');\n    }\n  } finally {\n    goog.moduleLoaderState_ = previousState;\n  }\n};\n\n\n/**\n * @private @const\n */\ngoog.loadModuleFromSource_ =\n    /** @type {function(!Object, string):?} */ (function(exports) {\n      // NOTE: we avoid declaring parameters or local variables here to avoid\n      // masking globals or leaking values into the module definition.\n      'use strict';\n      eval(arguments[1]);\n      return exports;\n    });\n\n\n/**\n * Normalize a file path by removing redundant \"..\" and extraneous \".\" file\n * path components.\n * @param {string} path\n * @return {string}\n * @private\n */\ngoog.normalizePath_ = function(path) {\n  var components = path.split('/');\n  var i = 0;\n  while (i < components.length) {\n    if (components[i] == '.') {\n      components.splice(i, 1);\n    } else if (\n        i && components[i] == '..' && components[i - 1] &&\n        components[i - 1] != '..') {\n      components.splice(--i, 2);\n    } else {\n      i++;\n    }\n  }\n  return components.join('/');\n};\n\n\n/**\n * Provides a hook for loading a file when using Closure's goog.require() API\n * with goog.modules.  In particular this hook is provided to support Node.js.\n *\n * @type {(function(string):string)|undefined}\n */\ngoog.global.CLOSURE_LOAD_FILE_SYNC;\n\n\n/**\n * Loads file by synchronous XHR. Should not be used in production environments.\n * @param {string} src Source URL.\n * @return {?string} File contents, or null if load failed.\n * @private\n */\ngoog.loadFileSync_ = function(src) {\n  if (goog.global.CLOSURE_LOAD_FILE_SYNC) {\n    return goog.global.CLOSURE_LOAD_FILE_SYNC(src);\n  } else {\n    try {\n      /** @type {XMLHttpRequest} */\n      var xhr = new goog.global['XMLHttpRequest']();\n      xhr.open('get', src, false);\n      xhr.send();\n      // NOTE: Successful http: requests have a status of 200, but successful\n      // file: requests may have a status of zero.  Any other status, or a\n      // thrown exception (particularly in case of file: requests) indicates\n      // some sort of error, which we treat as a missing or unavailable file.\n      return xhr.status == 0 || xhr.status == 200 ? xhr.responseText : null;\n    } catch (err) {\n      // No need to rethrow or log, since errors should show up on their own.\n      return null;\n    }\n  }\n};\n\n\n/**\n * Lazily retrieves the transpiler and applies it to the source.\n * @param {string} code JS code.\n * @param {string} path Path to the code.\n * @param {string} target Language level output.\n * @return {string} The transpiled code.\n * @private\n */\ngoog.transpile_ = function(code, path, target) {\n  var jscomp = goog.global['$jscomp'];\n  if (!jscomp) {\n    goog.global['$jscomp'] = jscomp = {};\n  }\n  var transpile = jscomp.transpile;\n  if (!transpile) {\n    var transpilerPath = goog.basePath + goog.TRANSPILER;\n    var transpilerCode = goog.loadFileSync_(transpilerPath);\n    if (transpilerCode) {\n      // This must be executed synchronously, since by the time we know we\n      // need it, we're about to load and write the ES6 code synchronously,\n      // so a normal script-tag load will be too slow. Wrapped in a function\n      // so that code is eval'd in the global scope.\n      (function() {\n        (0, eval)(transpilerCode + '\\n//# sourceURL=' + transpilerPath);\n      }).call(goog.global);\n      // Even though the transpiler is optional, if $gwtExport is found, it's\n      // a sign the transpiler was loaded and the $jscomp.transpile *should*\n      // be there.\n      if (goog.global['$gwtExport'] && goog.global['$gwtExport']['$jscomp'] &&\n          !goog.global['$gwtExport']['$jscomp']['transpile']) {\n        throw new Error(\n            'The transpiler did not properly export the \"transpile\" ' +\n            'method. $gwtExport: ' + JSON.stringify(goog.global['$gwtExport']));\n      }\n      // transpile.js only exports a single $jscomp function, transpile. We\n      // grab just that and add it to the existing definition of $jscomp which\n      // contains the polyfills.\n      goog.global['$jscomp'].transpile =\n          goog.global['$gwtExport']['$jscomp']['transpile'];\n      jscomp = goog.global['$jscomp'];\n      transpile = jscomp.transpile;\n    }\n  }\n  if (!transpile) {\n    // The transpiler is an optional component.  If it's not available then\n    // replace it with a pass-through function that simply logs.\n    var suffix = ' requires transpilation but no transpiler was found.';\n    transpile = jscomp.transpile = function(code, path) {\n      // TODO(sdh): figure out some way to get this error to show up\n      // in test results, noting that the failure may occur in many\n      // different ways, including in loadModule() before the test\n      // runner even comes up.\n      goog.logToConsole_(path + suffix);\n      return code;\n    };\n  }\n  // Note: any transpilation errors/warnings will be logged to the console.\n  return transpile(code, path, target);\n};\n\n//==============================================================================\n// Language Enhancements\n//==============================================================================\n\n\n/**\n * This is a \"fixed\" version of the typeof operator.  It differs from the typeof\n * operator in such a way that null returns 'null' and arrays return 'array'.\n * @param {?} value The value to get the type of.\n * @return {string} The name of the type.\n */\ngoog.typeOf = function(value) {\n  var s = typeof value;\n\n  if (s != 'object') {\n    return s;\n  }\n\n  if (!value) {\n    return 'null';\n  }\n\n  if (Array.isArray(value)) {\n    return 'array';\n  }\n  return s;\n};\n\n\n/**\n * Returns true if the object looks like an array. To qualify as array like\n * the value needs to be either a NodeList or an object with a Number length\n * property. Note that for this function neither strings nor functions are\n * considered \"array-like\".\n *\n * @param {?} val Variable to test.\n * @return {boolean} Whether variable is an array.\n */\ngoog.isArrayLike = function(val) {\n  var type = goog.typeOf(val);\n  // We do not use goog.isObject here in order to exclude function values.\n  return type == 'array' || type == 'object' && typeof val.length == 'number';\n};\n\n\n/**\n * Returns true if the object looks like a Date. To qualify as Date-like the\n * value needs to be an object and have a getFullYear() function.\n * @param {?} val Variable to test.\n * @return {boolean} Whether variable is a like a Date.\n */\ngoog.isDateLike = function(val) {\n  return goog.isObject(val) && typeof val.getFullYear == 'function';\n};\n\n\n/**\n * Returns true if the specified value is an object.  This includes arrays and\n * functions.\n * @param {?} val Variable to test.\n * @return {boolean} Whether variable is an object.\n */\ngoog.isObject = function(val) {\n  var type = typeof val;\n  return type == 'object' && val != null || type == 'function';\n  // return Object(val) === val also works, but is slower, especially if val is\n  // not an object.\n};\n\n\n/**\n * Gets a unique ID for an object. This mutates the object so that further calls\n * with the same object as a parameter returns the same value. The unique ID is\n * guaranteed to be unique across the current session amongst objects that are\n * passed into `getUid`. There is no guarantee that the ID is unique or\n * consistent across sessions. It is unsafe to generate unique ID for function\n * prototypes.\n *\n * @param {Object} obj The object to get the unique ID for.\n * @return {number} The unique ID for the object.\n */\ngoog.getUid = function(obj) {\n  // TODO(arv): Make the type stricter, do not accept null.\n  return Object.prototype.hasOwnProperty.call(obj, goog.UID_PROPERTY_) &&\n      obj[goog.UID_PROPERTY_] ||\n      (obj[goog.UID_PROPERTY_] = ++goog.uidCounter_);\n};\n\n\n/**\n * Whether the given object is already assigned a unique ID.\n *\n * This does not modify the object.\n *\n * @param {!Object} obj The object to check.\n * @return {boolean} Whether there is an assigned unique id for the object.\n */\ngoog.hasUid = function(obj) {\n  return !!obj[goog.UID_PROPERTY_];\n};\n\n\n/**\n * Removes the unique ID from an object. This is useful if the object was\n * previously mutated using `goog.getUid` in which case the mutation is\n * undone.\n * @param {Object} obj The object to remove the unique ID field from.\n */\ngoog.removeUid = function(obj) {\n  // TODO(arv): Make the type stricter, do not accept null.\n\n  // In IE, DOM nodes are not instances of Object and throw an exception if we\n  // try to delete.  Instead we try to use removeAttribute.\n  if (obj !== null && 'removeAttribute' in obj) {\n    obj.removeAttribute(goog.UID_PROPERTY_);\n  }\n\n  try {\n    delete obj[goog.UID_PROPERTY_];\n  } catch (ex) {\n  }\n};\n\n\n/**\n * Name for unique ID property. Initialized in a way to help avoid collisions\n * with other closure JavaScript on the same page.\n * @type {string}\n * @private\n */\ngoog.UID_PROPERTY_ = 'closure_uid_' + ((Math.random() * 1e9) >>> 0);\n\n\n/**\n * Counter for UID.\n * @type {number}\n * @private\n */\ngoog.uidCounter_ = 0;\n\n\n/**\n * Clones a value. The input may be an Object, Array, or basic type. Objects and\n * arrays will be cloned recursively.\n *\n * WARNINGS:\n * <code>goog.cloneObject</code> does not detect reference loops. Objects that\n * refer to themselves will cause infinite recursion.\n *\n * <code>goog.cloneObject</code> is unaware of unique identifiers, and copies\n * UIDs created by <code>getUid</code> into cloned results.\n *\n * @param {*} obj The value to clone.\n * @return {*} A clone of the input value.\n * @deprecated goog.cloneObject is unsafe. Prefer the goog.object methods.\n */\ngoog.cloneObject = function(obj) {\n  var type = goog.typeOf(obj);\n  if (type == 'object' || type == 'array') {\n    if (typeof obj.clone === 'function') {\n      return obj.clone();\n    }\n    var clone = type == 'array' ? [] : {};\n    for (var key in obj) {\n      clone[key] = goog.cloneObject(obj[key]);\n    }\n    return clone;\n  }\n\n  return obj;\n};\n\n\n/**\n * A native implementation of goog.bind.\n * @param {?function(this:T, ...)} fn A function to partially apply.\n * @param {T} selfObj Specifies the object which this should point to when the\n *     function is run.\n * @param {...*} var_args Additional arguments that are partially applied to the\n *     function.\n * @return {!Function} A partially-applied form of the function goog.bind() was\n *     invoked as a method of.\n * @template T\n * @private\n */\ngoog.bindNative_ = function(fn, selfObj, var_args) {\n  return /** @type {!Function} */ (fn.call.apply(fn.bind, arguments));\n};\n\n\n/**\n * A pure-JS implementation of goog.bind.\n * @param {?function(this:T, ...)} fn A function to partially apply.\n * @param {T} selfObj Specifies the object which this should point to when the\n *     function is run.\n * @param {...*} var_args Additional arguments that are partially applied to the\n *     function.\n * @return {!Function} A partially-applied form of the function goog.bind() was\n *     invoked as a method of.\n * @template T\n * @private\n */\ngoog.bindJs_ = function(fn, selfObj, var_args) {\n  if (!fn) {\n    throw new Error();\n  }\n\n  if (arguments.length > 2) {\n    var boundArgs = Array.prototype.slice.call(arguments, 2);\n    return function() {\n      // Prepend the bound arguments to the current arguments.\n      var newArgs = Array.prototype.slice.call(arguments);\n      Array.prototype.unshift.apply(newArgs, boundArgs);\n      return fn.apply(selfObj, newArgs);\n    };\n\n  } else {\n    return function() {\n      return fn.apply(selfObj, arguments);\n    };\n  }\n};\n\n\n/**\n * Partially applies this function to a particular 'this object' and zero or\n * more arguments. The result is a new function with some arguments of the first\n * function pre-filled and the value of this 'pre-specified'.\n *\n * Remaining arguments specified at call-time are appended to the pre-specified\n * ones.\n *\n * Also see: {@link #partial}.\n *\n * Usage:\n * <pre>var barMethBound = goog.bind(myFunction, myObj, 'arg1', 'arg2');\n * barMethBound('arg3', 'arg4');</pre>\n *\n * @param {?function(this:T, ...)} fn A function to partially apply.\n * @param {T} selfObj Specifies the object which this should point to when the\n *     function is run.\n * @param {...*} var_args Additional arguments that are partially applied to the\n *     function.\n * @return {!Function} A partially-applied form of the function goog.bind() was\n *     invoked as a method of.\n * @template T\n * @suppress {deprecated} See above.\n * @deprecated use `=> {}` or Function.prototype.bind instead.\n */\ngoog.bind = function(fn, selfObj, var_args) {\n  // TODO(nicksantos): narrow the type signature.\n  if (Function.prototype.bind &&\n      // NOTE(nicksantos): Somebody pulled base.js into the default Chrome\n      // extension environment. This means that for Chrome extensions, they get\n      // the implementation of Function.prototype.bind that calls goog.bind\n      // instead of the native one. Even worse, we don't want to introduce a\n      // circular dependency between goog.bind and Function.prototype.bind, so\n      // we have to hack this to make sure it works correctly.\n      Function.prototype.bind.toString().indexOf('native code') != -1) {\n    goog.bind = goog.bindNative_;\n  } else {\n    goog.bind = goog.bindJs_;\n  }\n  return goog.bind.apply(null, arguments);\n};\n\n\n/**\n * Like goog.bind(), except that a 'this object' is not required. Useful when\n * the target function is already bound.\n *\n * Usage:\n * var g = goog.partial(f, arg1, arg2);\n * g(arg3, arg4);\n *\n * @param {Function} fn A function to partially apply.\n * @param {...*} var_args Additional arguments that are partially applied to fn.\n * @return {!Function} A partially-applied form of the function goog.partial()\n *     was invoked as a method of.\n */\ngoog.partial = function(fn, var_args) {\n  var args = Array.prototype.slice.call(arguments, 1);\n  return function() {\n    // Clone the array (with slice()) and append additional arguments\n    // to the existing arguments.\n    var newArgs = args.slice();\n    newArgs.push.apply(newArgs, arguments);\n    return fn.apply(/** @type {?} */ (this), newArgs);\n  };\n};\n\n\n/**\n * Copies all the members of a source object to a target object. This method\n * does not work on all browsers for all objects that contain keys such as\n * toString or hasOwnProperty. Use goog.object.extend for this purpose.\n *\n * NOTE: Some have advocated for the use of goog.mixin to setup classes\n * with multiple inheritence (traits, mixins, etc).  However, as it simply\n * uses \"for in\", this is not compatible with ES6 classes whose methods are\n * non-enumerable.  Changing this, would break cases where non-enumerable\n * properties are not expected.\n *\n * @param {Object} target Target.\n * @param {Object} source Source.\n * @deprecated Prefer Object.assign\n */\ngoog.mixin = function(target, source) {\n  for (var x in source) {\n    target[x] = source[x];\n  }\n\n  // For IE7 or lower, the for-in-loop does not contain any properties that are\n  // not enumerable on the prototype object (for example, isPrototypeOf from\n  // Object.prototype) but also it will not include 'replace' on objects that\n  // extend String and change 'replace' (not that it is common for anyone to\n  // extend anything except Object).\n};\n\n\n/**\n * @return {number} An integer value representing the number of milliseconds\n *     between midnight, January 1, 1970 and the current time.\n * @deprecated Use Date.now\n */\ngoog.now = function() {\n  return Date.now();\n};\n\n\n/**\n * Evals JavaScript in the global scope.\n *\n * Throws an exception if neither execScript or eval is defined.\n * @param {string} script JavaScript string.\n */\ngoog.globalEval = function(script) {\n  (0, eval)(script);\n};\n\n\n/**\n * Optional map of CSS class names to obfuscated names used with\n * goog.getCssName().\n * @private {!Object<string, string>|undefined}\n * @see goog.setCssNameMapping\n */\ngoog.cssNameMapping_;\n\n\n/**\n * Optional obfuscation style for CSS class names. Should be set to either\n * 'BY_WHOLE' or 'BY_PART' if defined.\n * @type {string|undefined}\n * @private\n * @see goog.setCssNameMapping\n */\ngoog.cssNameMappingStyle_;\n\n\n\n/**\n * A hook for modifying the default behavior goog.getCssName. The function\n * if present, will receive the standard output of the goog.getCssName as\n * its input.\n *\n * @type {(function(string):string)|undefined}\n */\ngoog.global.CLOSURE_CSS_NAME_MAP_FN;\n\n\n/**\n * Handles strings that are intended to be used as CSS class names.\n *\n * This function works in tandem with @see goog.setCssNameMapping.\n *\n * Without any mapping set, the arguments are simple joined with a hyphen and\n * passed through unaltered.\n *\n * When there is a mapping, there are two possible styles in which these\n * mappings are used. In the BY_PART style, each part (i.e. in between hyphens)\n * of the passed in css name is rewritten according to the map. In the BY_WHOLE\n * style, the full css name is looked up in the map directly. If a rewrite is\n * not specified by the map, the compiler will output a warning.\n *\n * When the mapping is passed to the compiler, it will replace calls to\n * goog.getCssName with the strings from the mapping, e.g.\n *     var x = goog.getCssName('foo');\n *     var y = goog.getCssName(this.baseClass, 'active');\n *  becomes:\n *     var x = 'foo';\n *     var y = this.baseClass + '-active';\n *\n * If one argument is passed it will be processed, if two are passed only the\n * modifier will be processed, as it is assumed the first argument was generated\n * as a result of calling goog.getCssName.\n *\n * @param {string} className The class name.\n * @param {string=} opt_modifier A modifier to be appended to the class name.\n * @return {string} The class name or the concatenation of the class name and\n *     the modifier.\n */\ngoog.getCssName = function(className, opt_modifier) {\n  // String() is used for compatibility with compiled soy where the passed\n  // className can be non-string objects.\n  if (String(className).charAt(0) == '.') {\n    throw new Error(\n        'className passed in goog.getCssName must not start with \".\".' +\n        ' You passed: ' + className);\n  }\n\n  var getMapping = function(cssName) {\n    return goog.cssNameMapping_[cssName] || cssName;\n  };\n\n  var renameByParts = function(cssName) {\n    // Remap all the parts individually.\n    var parts = cssName.split('-');\n    var mapped = [];\n    for (var i = 0; i < parts.length; i++) {\n      mapped.push(getMapping(parts[i]));\n    }\n    return mapped.join('-');\n  };\n\n  var rename;\n  if (goog.cssNameMapping_) {\n    rename =\n        goog.cssNameMappingStyle_ == 'BY_WHOLE' ? getMapping : renameByParts;\n  } else {\n    rename = function(a) {\n      return a;\n    };\n  }\n\n  var result =\n      opt_modifier ? className + '-' + rename(opt_modifier) : rename(className);\n\n  // The special CLOSURE_CSS_NAME_MAP_FN allows users to specify further\n  // processing of the class name.\n  if (goog.global.CLOSURE_CSS_NAME_MAP_FN) {\n    return goog.global.CLOSURE_CSS_NAME_MAP_FN(result);\n  }\n\n  return result;\n};\n\n\n/**\n * Sets the map to check when returning a value from goog.getCssName(). Example:\n * <pre>\n * goog.setCssNameMapping({\n *   \"goog\": \"a\",\n *   \"disabled\": \"b\",\n * });\n *\n * var x = goog.getCssName('goog');\n * // The following evaluates to: \"a a-b\".\n * goog.getCssName('goog') + ' ' + goog.getCssName(x, 'disabled')\n * </pre>\n * When declared as a map of string literals to string literals, the JSCompiler\n * will replace all calls to goog.getCssName() using the supplied map if the\n * --process_closure_primitives flag is set.\n *\n * @param {!Object} mapping A map of strings to strings where keys are possible\n *     arguments to goog.getCssName() and values are the corresponding values\n *     that should be returned.\n * @param {string=} opt_style The style of css name mapping. There are two valid\n *     options: 'BY_PART', and 'BY_WHOLE'.\n * @see goog.getCssName for a description.\n */\ngoog.setCssNameMapping = function(mapping, opt_style) {\n  goog.cssNameMapping_ = mapping;\n  goog.cssNameMappingStyle_ = opt_style;\n};\n\n\n/**\n * To use CSS renaming in compiled mode, one of the input files should have a\n * call to goog.setCssNameMapping() with an object literal that the JSCompiler\n * can extract and use to replace all calls to goog.getCssName(). In uncompiled\n * mode, JavaScript code should be loaded before this base.js file that declares\n * a global variable, CLOSURE_CSS_NAME_MAPPING, which is used below. This is\n * to ensure that the mapping is loaded before any calls to goog.getCssName()\n * are made in uncompiled mode.\n *\n * A hook for overriding the CSS name mapping.\n * @type {!Object<string, string>|undefined}\n */\ngoog.global.CLOSURE_CSS_NAME_MAPPING;\n\n\nif (!COMPILED && goog.global.CLOSURE_CSS_NAME_MAPPING) {\n  // This does not call goog.setCssNameMapping() because the JSCompiler\n  // requires that goog.setCssNameMapping() be called with an object literal.\n  goog.cssNameMapping_ = goog.global.CLOSURE_CSS_NAME_MAPPING;\n}\n\n\n/**\n * Gets a localized message.\n *\n * This function is a compiler primitive. If you give the compiler a localized\n * message bundle, it will replace the string at compile-time with a localized\n * version, and expand goog.getMsg call to a concatenated string.\n *\n * Messages must be initialized in the form:\n * <code>\n * var MSG_NAME = goog.getMsg('Hello {$placeholder}', {'placeholder': 'world'});\n * </code>\n *\n * This function produces a string which should be treated as plain text. Use\n * {@link goog.html.SafeHtmlFormatter} in conjunction with goog.getMsg to\n * produce SafeHtml.\n *\n * @param {string} str Translatable string, places holders in the form {$foo}.\n * @param {Object<string, string>=} opt_values Maps place holder name to value.\n * @param {{html: (boolean|undefined),\n *         unescapeHtmlEntities: (boolean|undefined)}=} opt_options Options:\n *     html: Escape '<' in str to '&lt;'. Used by Closure Templates where the\n *     generated code size and performance is critical which is why {@link\n *     goog.html.SafeHtmlFormatter} is not used. The value must be literal true\n *     or false.\n *     unescapeHtmlEntities: Unescape common html entities: &gt;, &lt;, &apos;,\n *     &quot; and &amp;. Used for messages not in HTML context, such as with\n *     `textContent` property.\n * @return {string} message with placeholders filled.\n */\ngoog.getMsg = function(str, opt_values, opt_options) {\n  if (opt_options && opt_options.html) {\n    // Note that '&' is not replaced because the translation can contain HTML\n    // entities.\n    str = str.replace(/</g, '&lt;');\n  }\n  if (opt_options && opt_options.unescapeHtmlEntities) {\n    // Note that \"&amp;\" must be the last to avoid \"creating\" new entities.\n    str = str.replace(/&lt;/g, '<')\n              .replace(/&gt;/g, '>')\n              .replace(/&apos;/g, '\\'')\n              .replace(/&quot;/g, '\"')\n              .replace(/&amp;/g, '&');\n  }\n  if (opt_values) {\n    str = str.replace(/\\{\\$([^}]+)}/g, function(match, key) {\n      return (opt_values != null && key in opt_values) ? opt_values[key] :\n                                                         match;\n    });\n  }\n  return str;\n};\n\n\n/**\n * Gets a localized message. If the message does not have a translation, gives a\n * fallback message.\n *\n * This is useful when introducing a new message that has not yet been\n * translated into all languages.\n *\n * This function is a compiler primitive. Must be used in the form:\n * <code>var x = goog.getMsgWithFallback(MSG_A, MSG_B);</code>\n * where MSG_A and MSG_B were initialized with goog.getMsg.\n *\n * @param {string} a The preferred message.\n * @param {string} b The fallback message.\n * @return {string} The best translated message.\n */\ngoog.getMsgWithFallback = function(a, b) {\n  return a;\n};\n\n\n/**\n * Exposes an unobfuscated global namespace path for the given object.\n * Note that fields of the exported object *will* be obfuscated, unless they are\n * exported in turn via this function or goog.exportProperty.\n *\n * Also handy for making public items that are defined in anonymous closures.\n *\n * ex. goog.exportSymbol('public.path.Foo', Foo);\n *\n * ex. goog.exportSymbol('public.path.Foo.staticFunction', Foo.staticFunction);\n *     public.path.Foo.staticFunction();\n *\n * ex. goog.exportSymbol('public.path.Foo.prototype.myMethod',\n *                       Foo.prototype.myMethod);\n *     new public.path.Foo().myMethod();\n *\n * @param {string} publicPath Unobfuscated name to export.\n * @param {*} object Object the name should point to.\n * @param {?Object=} objectToExportTo The object to add the path to; default\n *     is goog.global.\n */\ngoog.exportSymbol = function(publicPath, object, objectToExportTo) {\n  goog.exportPath_(\n      publicPath, object, /* overwriteImplicit= */ true, objectToExportTo);\n};\n\n\n/**\n * Exports a property unobfuscated into the object's namespace.\n * ex. goog.exportProperty(Foo, 'staticFunction', Foo.staticFunction);\n * ex. goog.exportProperty(Foo.prototype, 'myMethod', Foo.prototype.myMethod);\n * @param {Object} object Object whose static property is being exported.\n * @param {string} publicName Unobfuscated name to export.\n * @param {*} symbol Object the name should point to.\n */\ngoog.exportProperty = function(object, publicName, symbol) {\n  object[publicName] = symbol;\n};\n\n\n/**\n * Inherit the prototype methods from one constructor into another.\n *\n * Usage:\n * <pre>\n * function ParentClass(a, b) { }\n * ParentClass.prototype.foo = function(a) { };\n *\n * function ChildClass(a, b, c) {\n *   ChildClass.base(this, 'constructor', a, b);\n * }\n * goog.inherits(ChildClass, ParentClass);\n *\n * var child = new ChildClass('a', 'b', 'see');\n * child.foo(); // This works.\n * </pre>\n *\n * @param {!Function} childCtor Child class.\n * @param {!Function} parentCtor Parent class.\n * @suppress {strictMissingProperties} superClass_ and base is not defined on\n *    Function.\n * @deprecated Use ECMAScript class syntax instead.\n */\ngoog.inherits = function(childCtor, parentCtor) {\n  /** @constructor */\n  function tempCtor() {}\n  tempCtor.prototype = parentCtor.prototype;\n  childCtor.superClass_ = parentCtor.prototype;\n  childCtor.prototype = new tempCtor();\n  /** @override */\n  childCtor.prototype.constructor = childCtor;\n\n  /**\n   * Calls superclass constructor/method.\n   *\n   * This function is only available if you use goog.inherits to\n   * express inheritance relationships between classes.\n   *\n   * NOTE: This is a replacement for goog.base and for superClass_\n   * property defined in childCtor.\n   *\n   * @param {!Object} me Should always be \"this\".\n   * @param {string} methodName The method name to call. Calling\n   *     superclass constructor can be done with the special string\n   *     'constructor'.\n   * @param {...*} var_args The arguments to pass to superclass\n   *     method/constructor.\n   * @return {*} The return value of the superclass method/constructor.\n   */\n  childCtor.base = function(me, methodName, var_args) {\n    // Copying using loop to avoid deop due to passing arguments object to\n    // function. This is faster in many JS engines as of late 2014.\n    var args = new Array(arguments.length - 2);\n    for (var i = 2; i < arguments.length; i++) {\n      args[i - 2] = arguments[i];\n    }\n    return parentCtor.prototype[methodName].apply(me, args);\n  };\n};\n\n\n/**\n * Allow for aliasing within scope functions.  This function exists for\n * uncompiled code - in compiled code the calls will be inlined and the aliases\n * applied.  In uncompiled code the function is simply run since the aliases as\n * written are valid JavaScript.\n *\n *\n * @param {function()} fn Function to call.  This function can contain aliases\n *     to namespaces (e.g. \"var dom = goog.dom\") or classes\n *     (e.g. \"var Timer = goog.Timer\").\n * @deprecated Use goog.module instead.\n */\ngoog.scope = function(fn) {\n  if (goog.isInModuleLoader_()) {\n    throw new Error('goog.scope is not supported within a module.');\n  }\n  fn.call(goog.global);\n};\n\n\n/*\n * To support uncompiled, strict mode bundles that use eval to divide source\n * like so:\n *    eval('someSource;//# sourceUrl sourcefile.js');\n * We need to export the globally defined symbols \"goog\" and \"COMPILED\".\n * Exporting \"goog\" breaks the compiler optimizations, so we required that\n * be defined externally.\n * NOTE: We don't use goog.exportSymbol here because we don't want to trigger\n * extern generation when that compiler option is enabled.\n */\nif (!COMPILED) {\n  goog.global['COMPILED'] = COMPILED;\n}\n\n\n//==============================================================================\n// goog.defineClass implementation\n//==============================================================================\n\n\n/**\n * Creates a restricted form of a Closure \"class\":\n *   - from the compiler's perspective, the instance returned from the\n *     constructor is sealed (no new properties may be added).  This enables\n *     better checks.\n *   - the compiler will rewrite this definition to a form that is optimal\n *     for type checking and optimization (initially this will be a more\n *     traditional form).\n *\n * @param {Function} superClass The superclass, Object or null.\n * @param {goog.defineClass.ClassDescriptor} def\n *     An object literal describing\n *     the class.  It may have the following properties:\n *     \"constructor\": the constructor function\n *     \"statics\": an object literal containing methods to add to the constructor\n *        as \"static\" methods or a function that will receive the constructor\n *        function as its only parameter to which static properties can\n *        be added.\n *     all other properties are added to the prototype.\n * @return {!Function} The class constructor.\n * @deprecated Use ECMAScript class syntax instead.\n */\ngoog.defineClass = function(superClass, def) {\n  // TODO(johnlenz): consider making the superClass an optional parameter.\n  var constructor = def.constructor;\n  var statics = def.statics;\n  // Wrap the constructor prior to setting up the prototype and static methods.\n  if (!constructor || constructor == Object.prototype.constructor) {\n    constructor = function() {\n      throw new Error(\n          'cannot instantiate an interface (no constructor defined).');\n    };\n  }\n\n  var cls = goog.defineClass.createSealingConstructor_(constructor, superClass);\n  if (superClass) {\n    goog.inherits(cls, superClass);\n  }\n\n  // Remove all the properties that should not be copied to the prototype.\n  delete def.constructor;\n  delete def.statics;\n\n  goog.defineClass.applyProperties_(cls.prototype, def);\n  if (statics != null) {\n    if (statics instanceof Function) {\n      statics(cls);\n    } else {\n      goog.defineClass.applyProperties_(cls, statics);\n    }\n  }\n\n  return cls;\n};\n\n\n/**\n * @typedef {{\n *   constructor: (!Function|undefined),\n *   statics: (Object|undefined|function(Function):void)\n * }}\n */\ngoog.defineClass.ClassDescriptor;\n\n\n/**\n * @define {boolean} Whether the instances returned by goog.defineClass should\n *     be sealed when possible.\n *\n * When sealing is disabled the constructor function will not be wrapped by\n * goog.defineClass, making it incompatible with ES6 class methods.\n */\ngoog.defineClass.SEAL_CLASS_INSTANCES =\n    goog.define('goog.defineClass.SEAL_CLASS_INSTANCES', goog.DEBUG);\n\n\n/**\n * If goog.defineClass.SEAL_CLASS_INSTANCES is enabled and Object.seal is\n * defined, this function will wrap the constructor in a function that seals the\n * results of the provided constructor function.\n *\n * @param {!Function} ctr The constructor whose results maybe be sealed.\n * @param {Function} superClass The superclass constructor.\n * @return {!Function} The replacement constructor.\n * @private\n */\ngoog.defineClass.createSealingConstructor_ = function(ctr, superClass) {\n  if (!goog.defineClass.SEAL_CLASS_INSTANCES) {\n    // Do now wrap the constructor when sealing is disabled. Angular code\n    // depends on this for injection to work properly.\n    return ctr;\n  }\n\n  // NOTE: The sealing behavior has been removed\n\n  /**\n   * @this {Object}\n   * @return {?}\n   */\n  var wrappedCtr = function() {\n    // Don't seal an instance of a subclass when it calls the constructor of\n    // its super class as there is most likely still setup to do.\n    var instance = ctr.apply(this, arguments) || this;\n    instance[goog.UID_PROPERTY_] = instance[goog.UID_PROPERTY_];\n\n    return instance;\n  };\n\n  return wrappedCtr;\n};\n\n\n\n// TODO(johnlenz): share these values with the goog.object\n/**\n * The names of the fields that are defined on Object.prototype.\n * @type {!Array<string>}\n * @private\n * @const\n */\ngoog.defineClass.OBJECT_PROTOTYPE_FIELDS_ = [\n  'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable',\n  'toLocaleString', 'toString', 'valueOf'\n];\n\n\n// TODO(johnlenz): share this function with the goog.object\n/**\n * @param {!Object} target The object to add properties to.\n * @param {!Object} source The object to copy properties from.\n * @private\n */\ngoog.defineClass.applyProperties_ = function(target, source) {\n  // TODO(johnlenz): update this to support ES5 getters/setters\n\n  var key;\n  for (key in source) {\n    if (Object.prototype.hasOwnProperty.call(source, key)) {\n      target[key] = source[key];\n    }\n  }\n\n  // For IE the for-in-loop does not contain any properties that are not\n  // enumerable on the prototype object (for example isPrototypeOf from\n  // Object.prototype) and it will also not include 'replace' on objects that\n  // extend String and change 'replace' (not that it is common for anyone to\n  // extend anything except Object).\n  for (var i = 0; i < goog.defineClass.OBJECT_PROTOTYPE_FIELDS_.length; i++) {\n    key = goog.defineClass.OBJECT_PROTOTYPE_FIELDS_[i];\n    if (Object.prototype.hasOwnProperty.call(source, key)) {\n      target[key] = source[key];\n    }\n  }\n};\n\n\n// There's a bug in the compiler where without collapse properties the\n// Closure namespace defines do not guard code correctly. To help reduce code\n// size also check for !COMPILED even though it redundant until this is fixed.\nif (!COMPILED && goog.DEPENDENCIES_ENABLED) {\n\n\n  /**\n   * Tries to detect whether is in the context of an HTML document.\n   * @return {boolean} True if it looks like HTML document.\n   * @private\n   */\n  goog.inHtmlDocument_ = function() {\n    /** @type {!Document} */\n    var doc = goog.global.document;\n    return doc != null && 'write' in doc;  // XULDocument misses write.\n  };\n\n\n  /**\n   * We'd like to check for if the document readyState is 'loading'; however\n   * there are bugs on IE 10 and below where the readyState being anything other\n   * than 'complete' is not reliable.\n   * @return {boolean}\n   * @private\n   */\n  goog.isDocumentLoading_ = function() {\n    // attachEvent is available on IE 6 thru 10 only, and thus can be used to\n    // detect those browsers.\n    /** @type {!HTMLDocument} */\n    var doc = goog.global.document;\n    return doc.attachEvent ? doc.readyState != 'complete' :\n                             doc.readyState == 'loading';\n  };\n\n\n  /**\n   * Tries to detect the base path of base.js script that bootstraps Closure.\n   * @private\n   */\n  goog.findBasePath_ = function() {\n    if (goog.global.CLOSURE_BASE_PATH != undefined &&\n        // Anti DOM-clobbering runtime check (b/37736576).\n        typeof goog.global.CLOSURE_BASE_PATH === 'string') {\n      goog.basePath = goog.global.CLOSURE_BASE_PATH;\n      return;\n    } else if (!goog.inHtmlDocument_()) {\n      return;\n    }\n    /** @type {!Document} */\n    var doc = goog.global.document;\n    // If we have a currentScript available, use it exclusively.\n    var currentScript = doc.currentScript;\n    if (currentScript) {\n      var scripts = [currentScript];\n    } else {\n      var scripts = doc.getElementsByTagName('SCRIPT');\n    }\n    // Search backwards since the current script is in almost all cases the one\n    // that has base.js.\n    for (var i = scripts.length - 1; i >= 0; --i) {\n      var script = /** @type {!HTMLScriptElement} */ (scripts[i]);\n      var src = script.src;\n      var qmark = src.lastIndexOf('?');\n      var l = qmark == -1 ? src.length : qmark;\n      if (src.substr(l - 7, 7) == 'base.js') {\n        goog.basePath = src.substr(0, l - 7);\n        return;\n      }\n    }\n  };\n\n  goog.findBasePath_();\n\n  /** @struct @constructor @final */\n  goog.Transpiler = function() {\n    /** @private {?Object<string, boolean>} */\n    this.requiresTranspilation_ = null;\n    /** @private {string} */\n    this.transpilationTarget_ = goog.TRANSPILE_TO_LANGUAGE;\n  };\n  /**\n   * Returns a newly created map from language mode string to a boolean\n   * indicating whether transpilation should be done for that mode as well as\n   * the highest level language that this environment supports.\n   *\n   * Guaranteed invariant:\n   * For any two modes, l1 and l2 where l2 is a newer mode than l1,\n   * `map[l1] == true` implies that `map[l2] == true`.\n   *\n   * Note this method is extracted and used elsewhere, so it cannot rely on\n   * anything external (it should easily be able to be transformed into a\n   * standalone, top level function).\n   *\n   * @private\n   * @return {{\n   *   target: string,\n   *   map: !Object<string, boolean>\n   * }}\n   */\n  goog.Transpiler.prototype.createRequiresTranspilation_ = function() {\n    var transpilationTarget = 'es3';\n    var /** !Object<string, boolean> */ requiresTranspilation = {'es3': false};\n    var transpilationRequiredForAllLaterModes = false;\n\n    /**\n     * Adds an entry to requiresTranspliation for the given language mode.\n     *\n     * IMPORTANT: Calls must be made in order from oldest to newest language\n     * mode.\n     * @param {string} modeName\n     * @param {function(): boolean} isSupported Returns true if the JS engine\n     *     supports the given mode.\n     */\n    function addNewerLanguageTranspilationCheck(modeName, isSupported) {\n      if (transpilationRequiredForAllLaterModes) {\n        requiresTranspilation[modeName] = true;\n      } else if (isSupported()) {\n        transpilationTarget = modeName;\n        requiresTranspilation[modeName] = false;\n      } else {\n        requiresTranspilation[modeName] = true;\n        transpilationRequiredForAllLaterModes = true;\n      }\n    }\n\n    /**\n     * Does the given code evaluate without syntax errors and return a truthy\n     * result?\n     */\n    function /** boolean */ evalCheck(/** string */ code) {\n      try {\n        return !!eval(code);\n      } catch (ignored) {\n        return false;\n      }\n    }\n\n    var userAgent = goog.global.navigator && goog.global.navigator.userAgent ?\n        goog.global.navigator.userAgent :\n        '';\n\n    // Identify ES3-only browsers by their incorrect treatment of commas.\n    addNewerLanguageTranspilationCheck('es5', function() {\n      return evalCheck('[1,].length==1');\n    });\n    addNewerLanguageTranspilationCheck('es6', function() {\n      // Edge has a non-deterministic (i.e., not reproducible) bug with ES6:\n      // https://github.com/Microsoft/ChakraCore/issues/1496.\n      var re = /Edge\\/(\\d+)(\\.\\d)*/i;\n      var edgeUserAgent = userAgent.match(re);\n      if (edgeUserAgent) {\n        // The Reflect.construct test below is flaky on Edge. It can sometimes\n        // pass or fail on 40 15.15063, so just exit early for Edge and treat\n        // it as ES5. Until we're on a more up to date version just always use\n        // ES5. See https://github.com/Microsoft/ChakraCore/issues/3217.\n        return false;\n      }\n      // Test es6: [FF50 (?), Edge 14 (?), Chrome 50]\n      //   (a) default params (specifically shadowing locals),\n      //   (b) destructuring, (c) block-scoped functions,\n      //   (d) for-of (const), (e) new.target/Reflect.construct\n      var es6fullTest =\n          'class X{constructor(){if(new.target!=String)throw 1;this.x=42}}' +\n          'let q=Reflect.construct(X,[],String);if(q.x!=42||!(q instanceof ' +\n          'String))throw 1;for(const a of[2,3]){if(a==2)continue;function ' +\n          'f(z={a}){let a=0;return z.a}{function f(){return 0;}}return f()' +\n          '==3}';\n\n      return evalCheck('(()=>{\"use strict\";' + es6fullTest + '})()');\n    });\n    // ** and **= are the only new features in 'es7'\n    addNewerLanguageTranspilationCheck('es7', function() {\n      return evalCheck('2 ** 2 == 4');\n    });\n    // async functions are the only new features in 'es8'\n    addNewerLanguageTranspilationCheck('es8', function() {\n      return evalCheck('async () => 1, true');\n    });\n    addNewerLanguageTranspilationCheck('es9', function() {\n      return evalCheck('({...rest} = {}), true');\n    });\n    addNewerLanguageTranspilationCheck('es_next', function() {\n      return false;  // assume it always need to transpile\n    });\n    return {target: transpilationTarget, map: requiresTranspilation};\n  };\n\n\n  /**\n   * Determines whether the given language needs to be transpiled.\n   * @param {string} lang\n   * @param {string|undefined} module\n   * @return {boolean}\n   */\n  goog.Transpiler.prototype.needsTranspile = function(lang, module) {\n    if (goog.TRANSPILE == 'always') {\n      return true;\n    } else if (goog.TRANSPILE == 'never') {\n      return false;\n    } else if (!this.requiresTranspilation_) {\n      var obj = this.createRequiresTranspilation_();\n      this.requiresTranspilation_ = obj.map;\n      this.transpilationTarget_ = this.transpilationTarget_ || obj.target;\n    }\n    if (lang in this.requiresTranspilation_) {\n      if (this.requiresTranspilation_[lang]) {\n        return true;\n      } else if (\n          goog.inHtmlDocument_() && module == 'es6' &&\n          !('noModule' in goog.global.document.createElement('script'))) {\n        return true;\n      } else {\n        return false;\n      }\n    } else {\n      throw new Error('Unknown language mode: ' + lang);\n    }\n  };\n\n\n  /**\n   * Lazily retrieves the transpiler and applies it to the source.\n   * @param {string} code JS code.\n   * @param {string} path Path to the code.\n   * @return {string} The transpiled code.\n   */\n  goog.Transpiler.prototype.transpile = function(code, path) {\n    // TODO(johnplaisted): We should delete goog.transpile_ and just have this\n    // function. But there's some compile error atm where goog.global is being\n    // stripped incorrectly without this.\n    return goog.transpile_(code, path, this.transpilationTarget_);\n  };\n\n\n  /** @private @final {!goog.Transpiler} */\n  goog.transpiler_ = new goog.Transpiler();\n\n  /**\n   * Rewrites closing script tags in input to avoid ending an enclosing script\n   * tag.\n   *\n   * @param {string} str\n   * @return {string}\n   * @private\n   */\n  goog.protectScriptTag_ = function(str) {\n    return str.replace(/<\\/(SCRIPT)/ig, '\\\\x3c/$1');\n  };\n\n\n  /**\n   * A debug loader is responsible for downloading and executing javascript\n   * files in an unbundled, uncompiled environment.\n   *\n   * This can be custimized via the setDependencyFactory method, or by\n   * CLOSURE_IMPORT_SCRIPT/CLOSURE_LOAD_FILE_SYNC.\n   *\n   * @struct @constructor @final @private\n   */\n  goog.DebugLoader_ = function() {\n    /** @private @const {!Object<string, !goog.Dependency>} */\n    this.dependencies_ = {};\n    /** @private @const {!Object<string, string>} */\n    this.idToPath_ = {};\n    /** @private @const {!Object<string, boolean>} */\n    this.written_ = {};\n    /** @private @const {!Array<!goog.Dependency>} */\n    this.loadingDeps_ = [];\n    /** @private {!Array<!goog.Dependency>} */\n    this.depsToLoad_ = [];\n    /** @private {boolean} */\n    this.paused_ = false;\n    /** @private {!goog.DependencyFactory} */\n    this.factory_ = new goog.DependencyFactory(goog.transpiler_);\n    /** @private @const {!Object<string, !Function>} */\n    this.deferredCallbacks_ = {};\n    /** @private @const {!Array<string>} */\n    this.deferredQueue_ = [];\n  };\n\n  /**\n   * @param {!Array<string>} namespaces\n   * @param {function(): undefined} callback Function to call once all the\n   *     namespaces have loaded.\n   */\n  goog.DebugLoader_.prototype.bootstrap = function(namespaces, callback) {\n    var cb = callback;\n    function resolve() {\n      if (cb) {\n        goog.global.setTimeout(cb, 0);\n        cb = null;\n      }\n    }\n\n    if (!namespaces.length) {\n      resolve();\n      return;\n    }\n\n    var deps = [];\n    for (var i = 0; i < namespaces.length; i++) {\n      var path = this.getPathFromDeps_(namespaces[i]);\n      if (!path) {\n        throw new Error('Unregonized namespace: ' + namespaces[i]);\n      }\n      deps.push(this.dependencies_[path]);\n    }\n\n    var require = goog.require;\n    var loaded = 0;\n    for (var i = 0; i < namespaces.length; i++) {\n      require(namespaces[i]);\n      deps[i].onLoad(function() {\n        if (++loaded == namespaces.length) {\n          resolve();\n        }\n      });\n    }\n  };\n\n\n  /**\n   * Loads the Closure Dependency file.\n   *\n   * Exposed a public function so CLOSURE_NO_DEPS can be set to false, base\n   * loaded, setDependencyFactory called, and then this called. i.e. allows\n   * custom loading of the deps file.\n   */\n  goog.DebugLoader_.prototype.loadClosureDeps = function() {\n    // Circumvent addDependency, which would try to transpile deps.js if\n    // transpile is set to always.\n    var relPath = 'deps.js';\n    this.depsToLoad_.push(this.factory_.createDependency(\n        goog.normalizePath_(goog.basePath + relPath), relPath, [], [], {},\n        false));\n    this.loadDeps_();\n  };\n\n\n  /**\n   * Notifies the debug loader when a dependency has been requested.\n   *\n   * @param {string} absPathOrId Path of the dependency or goog id.\n   * @param {boolean=} opt_force\n   */\n  goog.DebugLoader_.prototype.requested = function(absPathOrId, opt_force) {\n    var path = this.getPathFromDeps_(absPathOrId);\n    if (path &&\n        (opt_force || this.areDepsLoaded_(this.dependencies_[path].requires))) {\n      var callback = this.deferredCallbacks_[path];\n      if (callback) {\n        delete this.deferredCallbacks_[path];\n        callback();\n      }\n    }\n  };\n\n\n  /**\n   * Sets the dependency factory, which can be used to create custom\n   * goog.Dependency implementations to control how dependencies are loaded.\n   *\n   * @param {!goog.DependencyFactory} factory\n   */\n  goog.DebugLoader_.prototype.setDependencyFactory = function(factory) {\n    this.factory_ = factory;\n  };\n\n\n  /**\n   * Travserses the dependency graph and queues the given dependency, and all of\n   * its transitive dependencies, for loading and then starts loading if not\n   * paused.\n   *\n   * @param {string} namespace\n   * @private\n   */\n  goog.DebugLoader_.prototype.load_ = function(namespace) {\n    if (!this.getPathFromDeps_(namespace)) {\n      var errorMessage = 'goog.require could not find: ' + namespace;\n\n      goog.logToConsole_(errorMessage);\n      throw Error(errorMessage);\n    } else {\n      var loader = this;\n\n      var deps = [];\n\n      /** @param {string} namespace */\n      var visit = function(namespace) {\n        var path = loader.getPathFromDeps_(namespace);\n\n        if (!path) {\n          throw new Error('Bad dependency path or symbol: ' + namespace);\n        }\n\n        if (loader.written_[path]) {\n          return;\n        }\n\n        loader.written_[path] = true;\n\n        var dep = loader.dependencies_[path];\n        for (var i = 0; i < dep.requires.length; i++) {\n          if (!goog.isProvided_(dep.requires[i])) {\n            visit(dep.requires[i]);\n          }\n        }\n\n        deps.push(dep);\n      };\n\n      visit(namespace);\n\n      var wasLoading = !!this.depsToLoad_.length;\n      this.depsToLoad_ = this.depsToLoad_.concat(deps);\n\n      if (!this.paused_ && !wasLoading) {\n        this.loadDeps_();\n      }\n    }\n  };\n\n\n  /**\n   * Loads any queued dependencies until they are all loaded or paused.\n   *\n   * @private\n   */\n  goog.DebugLoader_.prototype.loadDeps_ = function() {\n    var loader = this;\n    var paused = this.paused_;\n\n    while (this.depsToLoad_.length && !paused) {\n      (function() {\n        var loadCallDone = false;\n        var dep = loader.depsToLoad_.shift();\n\n        var loaded = false;\n        loader.loading_(dep);\n\n        var controller = {\n          pause: function() {\n            if (loadCallDone) {\n              throw new Error('Cannot call pause after the call to load.');\n            } else {\n              paused = true;\n            }\n          },\n          resume: function() {\n            if (loadCallDone) {\n              loader.resume_();\n            } else {\n              // Some dep called pause and then resume in the same load call.\n              // Just keep running this same loop.\n              paused = false;\n            }\n          },\n          loaded: function() {\n            if (loaded) {\n              throw new Error('Double call to loaded.');\n            }\n\n            loaded = true;\n            loader.loaded_(dep);\n          },\n          pending: function() {\n            // Defensive copy.\n            var pending = [];\n            for (var i = 0; i < loader.loadingDeps_.length; i++) {\n              pending.push(loader.loadingDeps_[i]);\n            }\n            return pending;\n          },\n          /**\n           * @param {goog.ModuleType} type\n           */\n          setModuleState: function(type) {\n            goog.moduleLoaderState_ = {\n              type: type,\n              moduleName: '',\n              declareLegacyNamespace: false\n            };\n          },\n          /** @type {function(string, string, string=)} */\n          registerEs6ModuleExports: function(\n              path, exports, opt_closureNamespace) {\n            if (opt_closureNamespace) {\n              goog.loadedModules_[opt_closureNamespace] = {\n                exports: exports,\n                type: goog.ModuleType.ES6,\n                moduleId: opt_closureNamespace || ''\n              };\n            }\n          },\n          /** @type {function(string, ?)} */\n          registerGoogModuleExports: function(moduleId, exports) {\n            goog.loadedModules_[moduleId] = {\n              exports: exports,\n              type: goog.ModuleType.GOOG,\n              moduleId: moduleId\n            };\n          },\n          clearModuleState: function() {\n            goog.moduleLoaderState_ = null;\n          },\n          defer: function(callback) {\n            if (loadCallDone) {\n              throw new Error(\n                  'Cannot register with defer after the call to load.');\n            }\n            loader.defer_(dep, callback);\n          },\n          areDepsLoaded: function() {\n            return loader.areDepsLoaded_(dep.requires);\n          }\n        };\n\n        try {\n          dep.load(controller);\n        } finally {\n          loadCallDone = true;\n        }\n      })();\n    }\n\n    if (paused) {\n      this.pause_();\n    }\n  };\n\n\n  /** @private */\n  goog.DebugLoader_.prototype.pause_ = function() {\n    this.paused_ = true;\n  };\n\n\n  /** @private */\n  goog.DebugLoader_.prototype.resume_ = function() {\n    if (this.paused_) {\n      this.paused_ = false;\n      this.loadDeps_();\n    }\n  };\n\n\n  /**\n   * Marks the given dependency as loading (load has been called but it has not\n   * yet marked itself as finished). Useful for dependencies that want to know\n   * what else is loading. Example: goog.modules cannot eval if there are\n   * loading dependencies.\n   *\n   * @param {!goog.Dependency} dep\n   * @private\n   */\n  goog.DebugLoader_.prototype.loading_ = function(dep) {\n    this.loadingDeps_.push(dep);\n  };\n\n\n  /**\n   * Marks the given dependency as having finished loading and being available\n   * for require.\n   *\n   * @param {!goog.Dependency} dep\n   * @private\n   */\n  goog.DebugLoader_.prototype.loaded_ = function(dep) {\n    for (var i = 0; i < this.loadingDeps_.length; i++) {\n      if (this.loadingDeps_[i] == dep) {\n        this.loadingDeps_.splice(i, 1);\n        break;\n      }\n    }\n\n    for (var i = 0; i < this.deferredQueue_.length; i++) {\n      if (this.deferredQueue_[i] == dep.path) {\n        this.deferredQueue_.splice(i, 1);\n        break;\n      }\n    }\n\n    if (this.loadingDeps_.length == this.deferredQueue_.length &&\n        !this.depsToLoad_.length) {\n      // Something has asked to load these, but they may not be directly\n      // required again later, so load them now that we know we're done loading\n      // everything else. e.g. a goog module entry point.\n      while (this.deferredQueue_.length) {\n        this.requested(this.deferredQueue_.shift(), true);\n      }\n    }\n\n    dep.loaded();\n  };\n\n\n  /**\n   * @param {!Array<string>} pathsOrIds\n   * @return {boolean}\n   * @private\n   */\n  goog.DebugLoader_.prototype.areDepsLoaded_ = function(pathsOrIds) {\n    for (var i = 0; i < pathsOrIds.length; i++) {\n      var path = this.getPathFromDeps_(pathsOrIds[i]);\n      if (!path ||\n          (!(path in this.deferredCallbacks_) &&\n           !goog.isProvided_(pathsOrIds[i]))) {\n        return false;\n      }\n    }\n\n    return true;\n  };\n\n\n  /**\n   * @param {string} absPathOrId\n   * @return {?string}\n   * @private\n   */\n  goog.DebugLoader_.prototype.getPathFromDeps_ = function(absPathOrId) {\n    if (absPathOrId in this.idToPath_) {\n      return this.idToPath_[absPathOrId];\n    } else if (absPathOrId in this.dependencies_) {\n      return absPathOrId;\n    } else {\n      return null;\n    }\n  };\n\n\n  /**\n   * @param {!goog.Dependency} dependency\n   * @param {!Function} callback\n   * @private\n   */\n  goog.DebugLoader_.prototype.defer_ = function(dependency, callback) {\n    this.deferredCallbacks_[dependency.path] = callback;\n    this.deferredQueue_.push(dependency.path);\n  };\n\n\n  /**\n   * Interface for goog.Dependency implementations to have some control over\n   * loading of dependencies.\n   *\n   * @record\n   */\n  goog.LoadController = function() {};\n\n\n  /**\n   * Tells the controller to halt loading of more dependencies.\n   */\n  goog.LoadController.prototype.pause = function() {};\n\n\n  /**\n   * Tells the controller to resume loading of more dependencies if paused.\n   */\n  goog.LoadController.prototype.resume = function() {};\n\n\n  /**\n   * Tells the controller that this dependency has finished loading.\n   *\n   * This causes this to be removed from pending() and any load callbacks to\n   * fire.\n   */\n  goog.LoadController.prototype.loaded = function() {};\n\n\n  /**\n   * List of dependencies on which load has been called but which have not\n   * called loaded on their controller. This includes the current dependency.\n   *\n   * @return {!Array<!goog.Dependency>}\n   */\n  goog.LoadController.prototype.pending = function() {};\n\n\n  /**\n   * Registers an object as an ES6 module's exports so that goog.modules may\n   * require it by path.\n   *\n   * @param {string} path Full path of the module.\n   * @param {?} exports\n   * @param {string=} opt_closureNamespace Closure namespace to associate with\n   *     this module.\n   */\n  goog.LoadController.prototype.registerEs6ModuleExports = function(\n      path, exports, opt_closureNamespace) {};\n\n\n  /**\n   * Sets the current module state.\n   *\n   * @param {goog.ModuleType} type Type of module.\n   */\n  goog.LoadController.prototype.setModuleState = function(type) {};\n\n\n  /**\n   * Clears the current module state.\n   */\n  goog.LoadController.prototype.clearModuleState = function() {};\n\n\n  /**\n   * Registers a callback to call once the dependency is actually requested\n   * via goog.require + all of the immediate dependencies have been loaded or\n   * all other files have been loaded. Allows for lazy loading until\n   * require'd without pausing dependency loading, which is needed on old IE.\n   *\n   * @param {!Function} callback\n   */\n  goog.LoadController.prototype.defer = function(callback) {};\n\n\n  /**\n   * @return {boolean}\n   */\n  goog.LoadController.prototype.areDepsLoaded = function() {};\n\n\n  /**\n   * Basic super class for all dependencies Closure Library can load.\n   *\n   * This default implementation is designed to load untranspiled, non-module\n   * scripts in a web broswer.\n   *\n   * For transpiled non-goog.module files {@see goog.TranspiledDependency}.\n   * For goog.modules see {@see goog.GoogModuleDependency}.\n   * For untranspiled ES6 modules {@see goog.Es6ModuleDependency}.\n   *\n   * @param {string} path Absolute path of this script.\n   * @param {string} relativePath Path of this script relative to goog.basePath.\n   * @param {!Array<string>} provides goog.provided or goog.module symbols\n   *     in this file.\n   * @param {!Array<string>} requires goog symbols or relative paths to Closure\n   *     this depends on.\n   * @param {!Object<string, string>} loadFlags\n   * @struct @constructor\n   */\n  goog.Dependency = function(\n      path, relativePath, provides, requires, loadFlags) {\n    /** @const */\n    this.path = path;\n    /** @const */\n    this.relativePath = relativePath;\n    /** @const */\n    this.provides = provides;\n    /** @const */\n    this.requires = requires;\n    /** @const */\n    this.loadFlags = loadFlags;\n    /** @private {boolean} */\n    this.loaded_ = false;\n    /** @private {!Array<function()>} */\n    this.loadCallbacks_ = [];\n  };\n\n\n  /**\n   * @return {string} The pathname part of this dependency's path if it is a\n   *     URI.\n   */\n  goog.Dependency.prototype.getPathName = function() {\n    var pathName = this.path;\n    var protocolIndex = pathName.indexOf('://');\n    if (protocolIndex >= 0) {\n      pathName = pathName.substring(protocolIndex + 3);\n      var slashIndex = pathName.indexOf('/');\n      if (slashIndex >= 0) {\n        pathName = pathName.substring(slashIndex + 1);\n      }\n    }\n    return pathName;\n  };\n\n\n  /**\n   * @param {function()} callback Callback to fire as soon as this has loaded.\n   * @final\n   */\n  goog.Dependency.prototype.onLoad = function(callback) {\n    if (this.loaded_) {\n      callback();\n    } else {\n      this.loadCallbacks_.push(callback);\n    }\n  };\n\n\n  /**\n   * Marks this dependency as loaded and fires any callbacks registered with\n   * onLoad.\n   * @final\n   */\n  goog.Dependency.prototype.loaded = function() {\n    this.loaded_ = true;\n    var callbacks = this.loadCallbacks_;\n    this.loadCallbacks_ = [];\n    for (var i = 0; i < callbacks.length; i++) {\n      callbacks[i]();\n    }\n  };\n\n\n  /**\n   * Whether or not document.written / appended script tags should be deferred.\n   *\n   * @private {boolean}\n   */\n  goog.Dependency.defer_ = false;\n\n\n  /**\n   * Map of script ready / state change callbacks. Old IE cannot handle putting\n   * these properties on goog.global.\n   *\n   * @private @const {!Object<string, function(?):undefined>}\n   */\n  goog.Dependency.callbackMap_ = {};\n\n\n  /**\n   * @param {function(...?):?} callback\n   * @return {string}\n   * @private\n   */\n  goog.Dependency.registerCallback_ = function(callback) {\n    var key = Math.random().toString(32);\n    goog.Dependency.callbackMap_[key] = callback;\n    return key;\n  };\n\n\n  /**\n   * @param {string} key\n   * @private\n   */\n  goog.Dependency.unregisterCallback_ = function(key) {\n    delete goog.Dependency.callbackMap_[key];\n  };\n\n\n  /**\n   * @param {string} key\n   * @param {...?} var_args\n   * @private\n   * @suppress {unusedPrivateMembers}\n   */\n  goog.Dependency.callback_ = function(key, var_args) {\n    if (key in goog.Dependency.callbackMap_) {\n      var callback = goog.Dependency.callbackMap_[key];\n      var args = [];\n      for (var i = 1; i < arguments.length; i++) {\n        args.push(arguments[i]);\n      }\n      callback.apply(undefined, args);\n    } else {\n      var errorMessage = 'Callback key ' + key +\n          ' does not exist (was base.js loaded more than once?).';\n      throw Error(errorMessage);\n    }\n  };\n\n\n  /**\n   * Starts loading this dependency. This dependency can pause loading if it\n   * needs to and resume it later via the controller interface.\n   *\n   * When this is loaded it should call controller.loaded(). Note that this will\n   * end up calling the loaded method of this dependency; there is no need to\n   * call it explicitly.\n   *\n   * @param {!goog.LoadController} controller\n   */\n  goog.Dependency.prototype.load = function(controller) {\n    if (goog.global.CLOSURE_IMPORT_SCRIPT) {\n      if (goog.global.CLOSURE_IMPORT_SCRIPT(this.path)) {\n        controller.loaded();\n      } else {\n        controller.pause();\n      }\n      return;\n    }\n\n    if (!goog.inHtmlDocument_()) {\n      goog.logToConsole_(\n          'Cannot use default debug loader outside of HTML documents.');\n      if (this.relativePath == 'deps.js') {\n        // Some old code is relying on base.js auto loading deps.js failing with\n        // no error before later setting CLOSURE_IMPORT_SCRIPT.\n        // CLOSURE_IMPORT_SCRIPT should be set *before* base.js is loaded, or\n        // CLOSURE_NO_DEPS set to true.\n        goog.logToConsole_(\n            'Consider setting CLOSURE_IMPORT_SCRIPT before loading base.js, ' +\n            'or setting CLOSURE_NO_DEPS to true.');\n        controller.loaded();\n      } else {\n        controller.pause();\n      }\n      return;\n    }\n\n    /** @type {!HTMLDocument} */\n    var doc = goog.global.document;\n\n    // If the user tries to require a new symbol after document load,\n    // something has gone terribly wrong. Doing a document.write would\n    // wipe out the page. This does not apply to the CSP-compliant method\n    // of writing script tags.\n    if (doc.readyState == 'complete' &&\n        !goog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING) {\n      // Certain test frameworks load base.js multiple times, which tries\n      // to write deps.js each time. If that happens, just fail silently.\n      // These frameworks wipe the page between each load of base.js, so this\n      // is OK.\n      var isDeps = /\\bdeps.js$/.test(this.path);\n      if (isDeps) {\n        controller.loaded();\n        return;\n      } else {\n        throw Error('Cannot write \"' + this.path + '\" after document load');\n      }\n    }\n\n    var nonce = goog.getScriptNonce();\n    if (!goog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING &&\n        goog.isDocumentLoading_()) {\n      var key;\n      var callback = function(script) {\n        if (script.readyState && script.readyState != 'complete') {\n          script.onload = callback;\n          return;\n        }\n        goog.Dependency.unregisterCallback_(key);\n        controller.loaded();\n      };\n      key = goog.Dependency.registerCallback_(callback);\n\n      var defer = goog.Dependency.defer_ ? ' defer' : '';\n      var nonceAttr = nonce ? ' nonce=\"' + nonce + '\"' : '';\n      var script = '<script src=\"' + this.path + '\"' + nonceAttr + defer +\n          ' id=\"script-' + key + '\"><\\/script>';\n\n      script += '<script' + nonceAttr + '>';\n\n      if (goog.Dependency.defer_) {\n        script += 'document.getElementById(\\'script-' + key +\n            '\\').onload = function() {\\n' +\n            '  goog.Dependency.callback_(\\'' + key + '\\', this);\\n' +\n            '};\\n';\n      } else {\n        script += 'goog.Dependency.callback_(\\'' + key +\n            '\\', document.getElementById(\\'script-' + key + '\\'));';\n      }\n\n      script += '<\\/script>';\n\n      doc.write(\n          goog.TRUSTED_TYPES_POLICY_ ?\n              goog.TRUSTED_TYPES_POLICY_.createHTML(script) :\n              script);\n    } else {\n      var scriptEl =\n          /** @type {!HTMLScriptElement} */ (doc.createElement('script'));\n      scriptEl.defer = goog.Dependency.defer_;\n      scriptEl.async = false;\n\n      // If CSP nonces are used, propagate them to dynamically created scripts.\n      // This is necessary to allow nonce-based CSPs without 'strict-dynamic'.\n      if (nonce) {\n        scriptEl.nonce = nonce;\n      }\n\n      if (goog.DebugLoader_.IS_OLD_IE_) {\n        // Execution order is not guaranteed on old IE, halt loading and write\n        // these scripts one at a time, after each loads.\n        controller.pause();\n        scriptEl.onreadystatechange = function() {\n          if (scriptEl.readyState == 'loaded' ||\n              scriptEl.readyState == 'complete') {\n            controller.loaded();\n            controller.resume();\n          }\n        };\n      } else {\n        scriptEl.onload = function() {\n          scriptEl.onload = null;\n          controller.loaded();\n        };\n      }\n\n      scriptEl.src = goog.TRUSTED_TYPES_POLICY_ ?\n          goog.TRUSTED_TYPES_POLICY_.createScriptURL(this.path) :\n          this.path;\n      doc.head.appendChild(scriptEl);\n    }\n  };\n\n\n  /**\n   * @param {string} path Absolute path of this script.\n   * @param {string} relativePath Path of this script relative to goog.basePath.\n   * @param {!Array<string>} provides Should be an empty array.\n   *     TODO(johnplaisted) add support for adding closure namespaces to ES6\n   *     modules for interop purposes.\n   * @param {!Array<string>} requires goog symbols or relative paths to Closure\n   *     this depends on.\n   * @param {!Object<string, string>} loadFlags\n   * @struct @constructor\n   * @extends {goog.Dependency}\n   */\n  goog.Es6ModuleDependency = function(\n      path, relativePath, provides, requires, loadFlags) {\n    goog.Es6ModuleDependency.base(\n        this, 'constructor', path, relativePath, provides, requires, loadFlags);\n  };\n  goog.inherits(goog.Es6ModuleDependency, goog.Dependency);\n\n\n  /** @override */\n  goog.Es6ModuleDependency.prototype.load = function(controller) {\n    if (goog.global.CLOSURE_IMPORT_SCRIPT) {\n      if (goog.global.CLOSURE_IMPORT_SCRIPT(this.path)) {\n        controller.loaded();\n      } else {\n        controller.pause();\n      }\n      return;\n    }\n\n    if (!goog.inHtmlDocument_()) {\n      goog.logToConsole_(\n          'Cannot use default debug loader outside of HTML documents.');\n      controller.pause();\n      return;\n    }\n\n    /** @type {!HTMLDocument} */\n    var doc = goog.global.document;\n\n    var dep = this;\n\n    // TODO(johnplaisted): Does document.writing really speed up anything? Any\n    // difference between this and just waiting for interactive mode and then\n    // appending?\n    function write(src, contents) {\n      var nonceAttr = '';\n      var nonce = goog.getScriptNonce();\n      if (nonce) {\n        nonceAttr = ' nonce=\"' + nonce + '\"';\n      }\n\n      if (contents) {\n        var script = '<script type=\"module\" crossorigin' + nonceAttr + '>' +\n            contents + '</' +\n            'script>';\n        doc.write(\n            goog.TRUSTED_TYPES_POLICY_ ?\n                goog.TRUSTED_TYPES_POLICY_.createHTML(script) :\n                script);\n      } else {\n        var script = '<script type=\"module\" crossorigin src=\"' + src + '\"' +\n            nonceAttr + '></' +\n            'script>';\n        doc.write(\n            goog.TRUSTED_TYPES_POLICY_ ?\n                goog.TRUSTED_TYPES_POLICY_.createHTML(script) :\n                script);\n      }\n    }\n\n    function append(src, contents) {\n      var scriptEl =\n          /** @type {!HTMLScriptElement} */ (doc.createElement('script'));\n      scriptEl.defer = true;\n      scriptEl.async = false;\n      scriptEl.type = 'module';\n      scriptEl.setAttribute('crossorigin', true);\n\n      // If CSP nonces are used, propagate them to dynamically created scripts.\n      // This is necessary to allow nonce-based CSPs without 'strict-dynamic'.\n      var nonce = goog.getScriptNonce();\n      if (nonce) {\n        scriptEl.nonce = nonce;\n      }\n\n      if (contents) {\n        scriptEl.text = goog.TRUSTED_TYPES_POLICY_ ?\n            goog.TRUSTED_TYPES_POLICY_.createScript(contents) :\n            contents;\n      } else {\n        scriptEl.src = goog.TRUSTED_TYPES_POLICY_ ?\n            goog.TRUSTED_TYPES_POLICY_.createScriptURL(src) :\n            src;\n      }\n\n      doc.head.appendChild(scriptEl);\n    }\n\n    var create;\n\n    if (goog.isDocumentLoading_()) {\n      create = write;\n      // We can ONLY call document.write if we are guaranteed that any\n      // non-module script tags document.written after this are deferred.\n      // Small optimization, in theory document.writing is faster.\n      goog.Dependency.defer_ = true;\n    } else {\n      create = append;\n    }\n\n    // Write 4 separate tags here:\n    // 1) Sets the module state at the correct time (just before execution).\n    // 2) A src node for this, which just hopefully lets the browser load it a\n    //    little early (no need to parse #3).\n    // 3) Import the module and register it.\n    // 4) Clear the module state at the correct time. Guaranteed to run even\n    //    if there is an error in the module (#3 will not run if there is an\n    //    error in the module).\n    var beforeKey = goog.Dependency.registerCallback_(function() {\n      goog.Dependency.unregisterCallback_(beforeKey);\n      controller.setModuleState(goog.ModuleType.ES6);\n    });\n    create(undefined, 'goog.Dependency.callback_(\"' + beforeKey + '\")');\n\n    // TODO(johnplaisted): Does this really speed up anything?\n    create(this.path, undefined);\n\n    var registerKey = goog.Dependency.registerCallback_(function(exports) {\n      goog.Dependency.unregisterCallback_(registerKey);\n      controller.registerEs6ModuleExports(\n          dep.path, exports, goog.moduleLoaderState_.moduleName);\n    });\n    create(\n        undefined,\n        'import * as m from \"' + this.path + '\"; goog.Dependency.callback_(\"' +\n            registerKey + '\", m)');\n\n    var afterKey = goog.Dependency.registerCallback_(function() {\n      goog.Dependency.unregisterCallback_(afterKey);\n      controller.clearModuleState();\n      controller.loaded();\n    });\n    create(undefined, 'goog.Dependency.callback_(\"' + afterKey + '\")');\n  };\n\n\n  /**\n   * Superclass of any dependency that needs to be loaded into memory,\n   * transformed, and then eval'd (goog.modules and transpiled files).\n   *\n   * @param {string} path Absolute path of this script.\n   * @param {string} relativePath Path of this script relative to goog.basePath.\n   * @param {!Array<string>} provides goog.provided or goog.module symbols\n   *     in this file.\n   * @param {!Array<string>} requires goog symbols or relative paths to Closure\n   *     this depends on.\n   * @param {!Object<string, string>} loadFlags\n   * @struct @constructor @abstract\n   * @extends {goog.Dependency}\n   */\n  goog.TransformedDependency = function(\n      path, relativePath, provides, requires, loadFlags) {\n    goog.TransformedDependency.base(\n        this, 'constructor', path, relativePath, provides, requires, loadFlags);\n    /** @private {?string} */\n    this.contents_ = null;\n\n    /**\n     * Whether to lazily make the synchronous XHR (when goog.require'd) or make\n     * the synchronous XHR when initially loading. On FireFox 61 there is a bug\n     * where an ES6 module cannot make a synchronous XHR (rather, it can, but if\n     * it does then no other ES6 modules will load after).\n     *\n     * tl;dr we lazy load due to bugs on older browsers and eager load due to\n     * bugs on newer ones.\n     *\n     * https://bugzilla.mozilla.org/show_bug.cgi?id=1477090\n     *\n     * @private @const {boolean}\n     */\n    this.lazyFetch_ = !goog.inHtmlDocument_() ||\n        !('noModule' in goog.global.document.createElement('script'));\n  };\n  goog.inherits(goog.TransformedDependency, goog.Dependency);\n\n\n  /** @override */\n  goog.TransformedDependency.prototype.load = function(controller) {\n    var dep = this;\n\n    function fetch() {\n      dep.contents_ = goog.loadFileSync_(dep.path);\n\n      if (dep.contents_) {\n        dep.contents_ = dep.transform(dep.contents_);\n        if (dep.contents_) {\n          dep.contents_ += '\\n//# sourceURL=' + dep.path;\n        }\n      }\n    }\n\n    if (goog.global.CLOSURE_IMPORT_SCRIPT) {\n      fetch();\n      if (this.contents_ &&\n          goog.global.CLOSURE_IMPORT_SCRIPT('', this.contents_)) {\n        this.contents_ = null;\n        controller.loaded();\n      } else {\n        controller.pause();\n      }\n      return;\n    }\n\n\n    var isEs6 = this.loadFlags['module'] == goog.ModuleType.ES6;\n\n    if (!this.lazyFetch_) {\n      fetch();\n    }\n\n    function load() {\n      if (dep.lazyFetch_) {\n        fetch();\n      }\n\n      if (!dep.contents_) {\n        // loadFileSync_ or transform are responsible. Assume they logged an\n        // error.\n        return;\n      }\n\n      if (isEs6) {\n        controller.setModuleState(goog.ModuleType.ES6);\n      }\n\n      var namespace;\n\n      try {\n        var contents = dep.contents_;\n        dep.contents_ = null;\n        goog.globalEval(contents);\n        if (isEs6) {\n          namespace = goog.moduleLoaderState_.moduleName;\n        }\n      } finally {\n        if (isEs6) {\n          controller.clearModuleState();\n        }\n      }\n\n      if (isEs6) {\n        // Due to circular dependencies this may not be available for require\n        // right now.\n        goog.global['$jscomp']['require']['ensure'](\n            [dep.getPathName()], function() {\n              controller.registerEs6ModuleExports(\n                  dep.path,\n                  goog.global['$jscomp']['require'](dep.getPathName()),\n                  namespace);\n            });\n      }\n\n      controller.loaded();\n    }\n\n    // Do not fetch now; in FireFox 47 the synchronous XHR doesn't block all\n    // events. If we fetched now and then document.write'd the contents the\n    // document.write would be an eval and would execute too soon! Instead write\n    // a script tag to fetch and eval synchronously at the correct time.\n    function fetchInOwnScriptThenLoad() {\n      /** @type {!HTMLDocument} */\n      var doc = goog.global.document;\n\n      var key = goog.Dependency.registerCallback_(function() {\n        goog.Dependency.unregisterCallback_(key);\n        load();\n      });\n\n      var nonce = goog.getScriptNonce();\n      var nonceAttr = nonce ? ' nonce=\"' + nonce + '\"' : '';\n      var script = '<script' + nonceAttr + '>' +\n          goog.protectScriptTag_('goog.Dependency.callback_(\"' + key + '\");') +\n          '</' +\n          'script>';\n      doc.write(\n          goog.TRUSTED_TYPES_POLICY_ ?\n              goog.TRUSTED_TYPES_POLICY_.createHTML(script) :\n              script);\n    }\n\n    // If one thing is pending it is this.\n    var anythingElsePending = controller.pending().length > 1;\n\n    // If anything else is loading we need to lazy load due to bugs in old IE.\n    // Specifically script tags with src and script tags with contents could\n    // execute out of order if document.write is used, so we cannot use\n    // document.write. Do not pause here; it breaks old IE as well.\n    var useOldIeWorkAround =\n        anythingElsePending && goog.DebugLoader_.IS_OLD_IE_;\n\n    // Additionally if we are meant to defer scripts but the page is still\n    // loading (e.g. an ES6 module is loading) then also defer. Or if we are\n    // meant to defer and anything else is pending then defer (those may be\n    // scripts that did not need transformation and are just script tags with\n    // defer set to true, and we need to evaluate after that deferred script).\n    var needsAsyncLoading = goog.Dependency.defer_ &&\n        (anythingElsePending || goog.isDocumentLoading_());\n\n    if (useOldIeWorkAround || needsAsyncLoading) {\n      // Note that we only defer when we have to rather than 100% of the time.\n      // Always defering would work, but then in theory the order of\n      // goog.require calls would then matter. We want to enforce that most of\n      // the time the order of the require calls does not matter.\n      controller.defer(function() {\n        load();\n      });\n      return;\n    }\n    // TODO(johnplaisted): Externs are missing onreadystatechange for\n    // HTMLDocument.\n    /** @type {?} */\n    var doc = goog.global.document;\n\n    var isInternetExplorer =\n        goog.inHtmlDocument_() && 'ActiveXObject' in goog.global;\n\n    // Don't delay in any version of IE. There's bug around this that will\n    // cause out of order script execution. This means that on older IE ES6\n    // modules will load too early (while the document is still loading + the\n    // dom is not available). The other option is to load too late (when the\n    // document is complete and the onload even will never fire). This seems\n    // to be the lesser of two evils as scripts already act like the former.\n    if (isEs6 && goog.inHtmlDocument_() && goog.isDocumentLoading_() &&\n        !isInternetExplorer) {\n      goog.Dependency.defer_ = true;\n      // Transpiled ES6 modules still need to load like regular ES6 modules,\n      // aka only after the document is interactive.\n      controller.pause();\n      var oldCallback = doc.onreadystatechange;\n      doc.onreadystatechange = function() {\n        if (doc.readyState == 'interactive') {\n          doc.onreadystatechange = oldCallback;\n          load();\n          controller.resume();\n        }\n        if (typeof oldCallback === 'function') {\n          oldCallback.apply(undefined, arguments);\n        }\n      };\n    } else {\n      // Always eval on old IE.\n      if (goog.DebugLoader_.IS_OLD_IE_ || !goog.inHtmlDocument_() ||\n          !goog.isDocumentLoading_()) {\n        load();\n      } else {\n        fetchInOwnScriptThenLoad();\n      }\n    }\n  };\n\n\n  /**\n   * @param {string} contents\n   * @return {string}\n   * @abstract\n   */\n  goog.TransformedDependency.prototype.transform = function(contents) {};\n\n\n  /**\n   * Any non-goog.module dependency which needs to be transpiled before eval.\n   *\n   * @param {string} path Absolute path of this script.\n   * @param {string} relativePath Path of this script relative to goog.basePath.\n   * @param {!Array<string>} provides goog.provided or goog.module symbols\n   *     in this file.\n   * @param {!Array<string>} requires goog symbols or relative paths to Closure\n   *     this depends on.\n   * @param {!Object<string, string>} loadFlags\n   * @param {!goog.Transpiler} transpiler\n   * @struct @constructor\n   * @extends {goog.TransformedDependency}\n   */\n  goog.TranspiledDependency = function(\n      path, relativePath, provides, requires, loadFlags, transpiler) {\n    goog.TranspiledDependency.base(\n        this, 'constructor', path, relativePath, provides, requires, loadFlags);\n    /** @protected @const*/\n    this.transpiler = transpiler;\n  };\n  goog.inherits(goog.TranspiledDependency, goog.TransformedDependency);\n\n\n  /** @override */\n  goog.TranspiledDependency.prototype.transform = function(contents) {\n    // Transpile with the pathname so that ES6 modules are domain agnostic.\n    return this.transpiler.transpile(contents, this.getPathName());\n  };\n\n\n  /**\n   * An ES6 module dependency that was transpiled to a jscomp module outside\n   * of the debug loader, e.g. server side.\n   *\n   * @param {string} path Absolute path of this script.\n   * @param {string} relativePath Path of this script relative to goog.basePath.\n   * @param {!Array<string>} provides goog.provided or goog.module symbols\n   *     in this file.\n   * @param {!Array<string>} requires goog symbols or relative paths to Closure\n   *     this depends on.\n   * @param {!Object<string, string>} loadFlags\n   * @struct @constructor\n   * @extends {goog.TransformedDependency}\n   */\n  goog.PreTranspiledEs6ModuleDependency = function(\n      path, relativePath, provides, requires, loadFlags) {\n    goog.PreTranspiledEs6ModuleDependency.base(\n        this, 'constructor', path, relativePath, provides, requires, loadFlags);\n  };\n  goog.inherits(\n      goog.PreTranspiledEs6ModuleDependency, goog.TransformedDependency);\n\n\n  /** @override */\n  goog.PreTranspiledEs6ModuleDependency.prototype.transform = function(\n      contents) {\n    return contents;\n  };\n\n\n  /**\n   * A goog.module, transpiled or not. Will always perform some minimal\n   * transformation even when not transpiled to wrap in a goog.loadModule\n   * statement.\n   *\n   * @param {string} path Absolute path of this script.\n   * @param {string} relativePath Path of this script relative to goog.basePath.\n   * @param {!Array<string>} provides goog.provided or goog.module symbols\n   *     in this file.\n   * @param {!Array<string>} requires goog symbols or relative paths to Closure\n   *     this depends on.\n   * @param {!Object<string, string>} loadFlags\n   * @param {boolean} needsTranspile\n   * @param {!goog.Transpiler} transpiler\n   * @struct @constructor\n   * @extends {goog.TransformedDependency}\n   */\n  goog.GoogModuleDependency = function(\n      path, relativePath, provides, requires, loadFlags, needsTranspile,\n      transpiler) {\n    goog.GoogModuleDependency.base(\n        this, 'constructor', path, relativePath, provides, requires, loadFlags);\n    /** @private @const */\n    this.needsTranspile_ = needsTranspile;\n    /** @private @const */\n    this.transpiler_ = transpiler;\n  };\n  goog.inherits(goog.GoogModuleDependency, goog.TransformedDependency);\n\n\n  /** @override */\n  goog.GoogModuleDependency.prototype.transform = function(contents) {\n    if (this.needsTranspile_) {\n      contents = this.transpiler_.transpile(contents, this.getPathName());\n    }\n\n    if (!goog.LOAD_MODULE_USING_EVAL || goog.global.JSON === undefined) {\n      return '' +\n          'goog.loadModule(function(exports) {' +\n          '\"use strict\";' + contents +\n          '\\n' +  // terminate any trailing single line comment.\n          ';return exports' +\n          '});' +\n          '\\n//# sourceURL=' + this.path + '\\n';\n    } else {\n      return '' +\n          'goog.loadModule(' +\n          goog.global.JSON.stringify(\n              contents + '\\n//# sourceURL=' + this.path + '\\n') +\n          ');';\n    }\n  };\n\n\n  /**\n   * Whether the browser is IE9 or earlier, which needs special handling\n   * for deferred modules.\n   * @const @private {boolean}\n   */\n  goog.DebugLoader_.IS_OLD_IE_ = !!(\n      !goog.global.atob && goog.global.document && goog.global.document['all']);\n\n\n  /**\n   * @param {string} relPath\n   * @param {!Array<string>|undefined} provides\n   * @param {!Array<string>} requires\n   * @param {boolean|!Object<string>=} opt_loadFlags\n   * @see goog.addDependency\n   */\n  goog.DebugLoader_.prototype.addDependency = function(\n      relPath, provides, requires, opt_loadFlags) {\n    provides = provides || [];\n    relPath = relPath.replace(/\\\\/g, '/');\n    var path = goog.normalizePath_(goog.basePath + relPath);\n    if (!opt_loadFlags || typeof opt_loadFlags === 'boolean') {\n      opt_loadFlags = opt_loadFlags ? {'module': goog.ModuleType.GOOG} : {};\n    }\n    var dep = this.factory_.createDependency(\n        path, relPath, provides, requires, opt_loadFlags,\n        goog.transpiler_.needsTranspile(\n            opt_loadFlags['lang'] || 'es3', opt_loadFlags['module']));\n    this.dependencies_[path] = dep;\n    for (var i = 0; i < provides.length; i++) {\n      this.idToPath_[provides[i]] = path;\n    }\n    this.idToPath_[relPath] = path;\n  };\n\n\n  /**\n   * Creates goog.Dependency instances for the debug loader to load.\n   *\n   * Should be overridden to have the debug loader use custom subclasses of\n   * goog.Dependency.\n   *\n   * @param {!goog.Transpiler} transpiler\n   * @struct @constructor\n   */\n  goog.DependencyFactory = function(transpiler) {\n    /** @protected @const */\n    this.transpiler = transpiler;\n  };\n\n\n  /**\n   * @param {string} path Absolute path of the file.\n   * @param {string} relativePath Path relative to closure’s base.js.\n   * @param {!Array<string>} provides Array of provided goog.provide/module ids.\n   * @param {!Array<string>} requires Array of required goog.provide/module /\n   *     relative ES6 module paths.\n   * @param {!Object<string, string>} loadFlags\n   * @param {boolean} needsTranspile True if the file needs to be transpiled\n   *     per the goog.Transpiler.\n   * @return {!goog.Dependency}\n   */\n  goog.DependencyFactory.prototype.createDependency = function(\n      path, relativePath, provides, requires, loadFlags, needsTranspile) {\n\n    if (loadFlags['module'] == goog.ModuleType.GOOG) {\n      return new goog.GoogModuleDependency(\n          path, relativePath, provides, requires, loadFlags, needsTranspile,\n          this.transpiler);\n    } else if (needsTranspile) {\n      return new goog.TranspiledDependency(\n          path, relativePath, provides, requires, loadFlags, this.transpiler);\n    } else {\n      if (loadFlags['module'] == goog.ModuleType.ES6) {\n        if (goog.TRANSPILE == 'never' && goog.ASSUME_ES_MODULES_TRANSPILED) {\n          return new goog.PreTranspiledEs6ModuleDependency(\n              path, relativePath, provides, requires, loadFlags);\n        } else {\n          return new goog.Es6ModuleDependency(\n              path, relativePath, provides, requires, loadFlags);\n        }\n      } else {\n        return new goog.Dependency(\n            path, relativePath, provides, requires, loadFlags);\n      }\n    }\n  };\n\n\n  /** @private @const */\n  goog.debugLoader_ = new goog.DebugLoader_();\n\n\n  /**\n   * Loads the Closure Dependency file.\n   *\n   * Exposed a public function so CLOSURE_NO_DEPS can be set to false, base\n   * loaded, setDependencyFactory called, and then this called. i.e. allows\n   * custom loading of the deps file.\n   */\n  goog.loadClosureDeps = function() {\n    goog.debugLoader_.loadClosureDeps();\n  };\n\n\n  /**\n   * Sets the dependency factory, which can be used to create custom\n   * goog.Dependency implementations to control how dependencies are loaded.\n   *\n   * Note: if you wish to call this function and provide your own implemnetation\n   * it is a wise idea to set CLOSURE_NO_DEPS to true, otherwise the dependency\n   * file and all of its goog.addDependency calls will use the default factory.\n   * You can call goog.loadClosureDeps to load the Closure dependency file\n   * later, after your factory is injected.\n   *\n   * @param {!goog.DependencyFactory} factory\n   */\n  goog.setDependencyFactory = function(factory) {\n    goog.debugLoader_.setDependencyFactory(factory);\n  };\n\n\n  /**\n   * Trusted Types policy for the debug loader.\n   * @private @const {?TrustedTypePolicy}\n   */\n  goog.TRUSTED_TYPES_POLICY_ = goog.TRUSTED_TYPES_POLICY_NAME ?\n      goog.createTrustedTypesPolicy(goog.TRUSTED_TYPES_POLICY_NAME + '#base') :\n      null;\n\n  if (!goog.global.CLOSURE_NO_DEPS) {\n    goog.debugLoader_.loadClosureDeps();\n  }\n\n\n  /**\n   * Bootstraps the given namespaces and calls the callback once they are\n   * available either via goog.require. This is a replacement for using\n   * `goog.require` to bootstrap Closure JavaScript. Previously a `goog.require`\n   * in an HTML file would guarantee that the require'd namespace was available\n   * in the next immediate script tag. With ES6 modules this no longer a\n   * guarantee.\n   *\n   * @param {!Array<string>} namespaces\n   * @param {function(): ?} callback Function to call once all the namespaces\n   *     have loaded. Always called asynchronously.\n   */\n  goog.bootstrap = function(namespaces, callback) {\n    goog.debugLoader_.bootstrap(namespaces, callback);\n  };\n}\n\n\n/**\n * @define {string} Trusted Types policy name. If non-empty then Closure will\n * use Trusted Types.\n */\ngoog.TRUSTED_TYPES_POLICY_NAME =\n    goog.define('goog.TRUSTED_TYPES_POLICY_NAME', 'goog');\n\n\n/**\n * Returns the parameter.\n * @param {string} s\n * @return {string}\n * @private\n */\ngoog.identity_ = function(s) {\n  return s;\n};\n\n\n/**\n * Creates Trusted Types policy if Trusted Types are supported by the browser.\n * The policy just blesses any string as a Trusted Type. It is not visibility\n * restricted because anyone can also call trustedTypes.createPolicy directly.\n * However, the allowed names should be restricted by a HTTP header and the\n * reference to the created policy should be visibility restricted.\n * @param {string} name\n * @return {?TrustedTypePolicy}\n */\ngoog.createTrustedTypesPolicy = function(name) {\n  var policy = null;\n  var policyFactory = goog.global.trustedTypes;\n  if (!policyFactory || !policyFactory.createPolicy) {\n    return policy;\n  }\n  // trustedTypes.createPolicy throws if called with a name that is already\n  // registered, even in report-only mode. Until the API changes, catch the\n  // error not to break the applications functionally. In such case, the code\n  // will fall back to using regular Safe Types.\n  // TODO(koto): Remove catching once createPolicy API stops throwing.\n  try {\n    policy = policyFactory.createPolicy(name, {\n      createHTML: goog.identity_,\n      createScript: goog.identity_,\n      createScriptURL: goog.identity_\n    });\n  } catch (e) {\n    goog.logToConsole_(e.message);\n  }\n  return policy;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Implements the disposable interface. The dispose method is used\n * to clean up references and resources.\n */\n\n\ngoog.provide('goog.Disposable');\ngoog.provide('goog.dispose');\ngoog.provide('goog.disposeAll');\n\ngoog.require('goog.disposable.IDisposable');\n\n\n\n/**\n * Class that provides the basic implementation for disposable objects. If your\n * class holds references or resources that can't be collected by standard GC,\n * it should extend this class or implement the disposable interface (defined\n * in goog.disposable.IDisposable). See description of\n * goog.disposable.IDisposable for examples of cleanup.\n * @constructor\n * @implements {goog.disposable.IDisposable}\n */\ngoog.Disposable = function() {\n  'use strict';\n  /**\n   * If monitoring the goog.Disposable instances is enabled, stores the creation\n   * stack trace of the Disposable instance.\n   * @type {string|undefined}\n   */\n  this.creationStack;\n\n  if (goog.Disposable.MONITORING_MODE != goog.Disposable.MonitoringMode.OFF) {\n    if (goog.Disposable.INCLUDE_STACK_ON_CREATION) {\n      this.creationStack = new Error().stack;\n    }\n    goog.Disposable.instances_[goog.getUid(this)] = this;\n  }\n  // Support sealing\n  this.disposed_ = this.disposed_;\n  this.onDisposeCallbacks_ = this.onDisposeCallbacks_;\n};\n\n\n/**\n * @enum {number} Different monitoring modes for Disposable.\n */\ngoog.Disposable.MonitoringMode = {\n  /**\n   * No monitoring.\n   */\n  OFF: 0,\n  /**\n   * Creating and disposing the goog.Disposable instances is monitored. All\n   * disposable objects need to call the `goog.Disposable` base\n   * constructor. The PERMANENT mode must be switched on before creating any\n   * goog.Disposable instances.\n   */\n  PERMANENT: 1,\n  /**\n   * INTERACTIVE mode can be switched on and off on the fly without producing\n   * errors. It also doesn't warn if the disposable objects don't call the\n   * `goog.Disposable` base constructor.\n   */\n  INTERACTIVE: 2\n};\n\n\n/**\n * @define {number} The monitoring mode of the goog.Disposable\n *     instances. Default is OFF. Switching on the monitoring is only\n *     recommended for debugging because it has a significant impact on\n *     performance and memory usage. If switched off, the monitoring code\n *     compiles down to 0 bytes.\n */\ngoog.Disposable.MONITORING_MODE =\n    goog.define('goog.Disposable.MONITORING_MODE', 0);\n\n\n/**\n * @define {boolean} Whether to attach creation stack to each created disposable\n *     instance; This is only relevant for when MonitoringMode != OFF.\n */\ngoog.Disposable.INCLUDE_STACK_ON_CREATION =\n    goog.define('goog.Disposable.INCLUDE_STACK_ON_CREATION', true);\n\n\n/**\n * Maps the unique ID of every undisposed `goog.Disposable` object to\n * the object itself.\n * @type {!Object<number, !goog.Disposable>}\n * @private\n */\ngoog.Disposable.instances_ = {};\n\n\n/**\n * @return {!Array<!goog.Disposable>} All `goog.Disposable` objects that\n *     haven't been disposed of.\n */\ngoog.Disposable.getUndisposedObjects = function() {\n  'use strict';\n  var ret = [];\n  for (var id in goog.Disposable.instances_) {\n    if (goog.Disposable.instances_.hasOwnProperty(id)) {\n      ret.push(goog.Disposable.instances_[Number(id)]);\n    }\n  }\n  return ret;\n};\n\n\n/**\n * Clears the registry of undisposed objects but doesn't dispose of them.\n */\ngoog.Disposable.clearUndisposedObjects = function() {\n  'use strict';\n  goog.Disposable.instances_ = {};\n};\n\n\n/**\n * Whether the object has been disposed of.\n * @type {boolean}\n * @private\n */\ngoog.Disposable.prototype.disposed_ = false;\n\n\n/**\n * Callbacks to invoke when this object is disposed.\n * @type {Array<!Function>}\n * @private\n */\ngoog.Disposable.prototype.onDisposeCallbacks_;\n\n\n/**\n * @return {boolean} Whether the object has been disposed of.\n * @override\n */\ngoog.Disposable.prototype.isDisposed = function() {\n  'use strict';\n  return this.disposed_;\n};\n\n\n/**\n * @return {boolean} Whether the object has been disposed of.\n * @deprecated Use {@link #isDisposed} instead.\n */\ngoog.Disposable.prototype.getDisposed = goog.Disposable.prototype.isDisposed;\n\n\n/**\n * Disposes of the object. If the object hasn't already been disposed of, calls\n * {@link #disposeInternal}. Classes that extend `goog.Disposable` should\n * override {@link #disposeInternal} in order to cleanup references, resources\n * and other disposable objects. Reentrant.\n *\n * @return {void} Nothing.\n * @override\n */\ngoog.Disposable.prototype.dispose = function() {\n  'use strict';\n  if (!this.disposed_) {\n    // Set disposed_ to true first, in case during the chain of disposal this\n    // gets disposed recursively.\n    this.disposed_ = true;\n    this.disposeInternal();\n    if (goog.Disposable.MONITORING_MODE != goog.Disposable.MonitoringMode.OFF) {\n      var uid = goog.getUid(this);\n      if (goog.Disposable.MONITORING_MODE ==\n              goog.Disposable.MonitoringMode.PERMANENT &&\n          !goog.Disposable.instances_.hasOwnProperty(uid)) {\n        throw new Error(\n            this + ' did not call the goog.Disposable base ' +\n            'constructor or was disposed of after a clearUndisposedObjects ' +\n            'call');\n      }\n      if (goog.Disposable.MONITORING_MODE !=\n              goog.Disposable.MonitoringMode.OFF &&\n          this.onDisposeCallbacks_ && this.onDisposeCallbacks_.length > 0) {\n        throw new Error(\n            this + ' did not empty its onDisposeCallbacks queue. This ' +\n            'probably means it overrode dispose() or disposeInternal() ' +\n            'without calling the superclass\\' method.');\n      }\n      delete goog.Disposable.instances_[uid];\n    }\n  }\n};\n\n\n/**\n * Associates a disposable object with this object so that they will be disposed\n * together.\n * @param {goog.disposable.IDisposable} disposable that will be disposed when\n *     this object is disposed.\n */\ngoog.Disposable.prototype.registerDisposable = function(disposable) {\n  'use strict';\n  this.addOnDisposeCallback(goog.partial(goog.dispose, disposable));\n};\n\n\n/**\n * Invokes a callback function when this object is disposed. Callbacks are\n * invoked in the order in which they were added. If a callback is added to\n * an already disposed Disposable, it will be called immediately.\n * @param {function(this:T):?} callback The callback function.\n * @param {T=} opt_scope An optional scope to call the callback in.\n * @template T\n */\ngoog.Disposable.prototype.addOnDisposeCallback = function(callback, opt_scope) {\n  'use strict';\n  if (this.disposed_) {\n    opt_scope !== undefined ? callback.call(opt_scope) : callback();\n    return;\n  }\n  if (!this.onDisposeCallbacks_) {\n    this.onDisposeCallbacks_ = [];\n  }\n\n  this.onDisposeCallbacks_.push(\n      opt_scope !== undefined ? goog.bind(callback, opt_scope) : callback);\n};\n\n\n/**\n * Performs appropriate cleanup. See description of goog.disposable.IDisposable\n * for examples. Classes that extend `goog.Disposable` should override this\n * method. Not reentrant. To avoid calling it twice, it must only be called from\n * the subclass' `disposeInternal` method. Everywhere else the public `dispose`\n * method must be used. For example:\n *\n * <pre>\n * mypackage.MyClass = function() {\n * mypackage.MyClass.base(this, 'constructor');\n *     // Constructor logic specific to MyClass.\n *     ...\n *   };\n *   goog.inherits(mypackage.MyClass, goog.Disposable);\n *\n *   mypackage.MyClass.prototype.disposeInternal = function() {\n *     // Dispose logic specific to MyClass.\n *     ...\n *     // Call superclass's disposeInternal at the end of the subclass's, like\n *     // in C++, to avoid hard-to-catch issues.\n *     mypackage.MyClass.base(this, 'disposeInternal');\n *   };\n * </pre>\n *\n * @protected\n */\ngoog.Disposable.prototype.disposeInternal = function() {\n  'use strict';\n  if (this.onDisposeCallbacks_) {\n    while (this.onDisposeCallbacks_.length) {\n      this.onDisposeCallbacks_.shift()();\n    }\n  }\n};\n\n\n/**\n * Returns True if we can verify the object is disposed.\n * Calls `isDisposed` on the argument if it supports it.  If obj\n * is not an object with an isDisposed() method, return false.\n * @param {*} obj The object to investigate.\n * @return {boolean} True if we can verify the object is disposed.\n */\ngoog.Disposable.isDisposed = function(obj) {\n  'use strict';\n  if (obj && typeof obj.isDisposed == 'function') {\n    return obj.isDisposed();\n  }\n  return false;\n};\n\n\n/**\n * Calls `dispose` on the argument if it supports it. If obj is not an\n *     object with a dispose() method, this is a no-op.\n * @param {*} obj The object to dispose of.\n */\ngoog.dispose = function(obj) {\n  'use strict';\n  if (obj && typeof obj.dispose == 'function') {\n    obj.dispose();\n  }\n};\n\n\n/**\n * Calls `dispose` on each member of the list that supports it. (If the\n * member is an ArrayLike, then `goog.disposeAll()` will be called\n * recursively on each of its members.) If the member is not an object with a\n * `dispose()` method, then it is ignored.\n * @param {...*} var_args The list.\n */\ngoog.disposeAll = function(var_args) {\n  'use strict';\n  for (var i = 0, len = arguments.length; i < len; ++i) {\n    var disposable = arguments[i];\n    if (goog.isArrayLike(disposable)) {\n      goog.disposeAll.apply(null, disposable);\n    } else {\n      goog.dispose(disposable);\n    }\n  }\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Utilities for manipulating arrays.\n */\n\n\ngoog.module('goog.array');\ngoog.module.declareLegacyNamespace();\n\nconst asserts = goog.require('goog.asserts');\n\n\n/**\n * @define {boolean} NATIVE_ARRAY_PROTOTYPES indicates whether the code should\n * rely on Array.prototype functions, if available.\n *\n * The Array.prototype functions can be defined by external libraries like\n * Prototype and setting this flag to false forces closure to use its own\n * goog.array implementation.\n *\n * If your javascript can be loaded by a third party site and you are wary about\n * relying on the prototype functions, specify\n * \"--define goog.NATIVE_ARRAY_PROTOTYPES=false\" to the JSCompiler.\n *\n * Setting goog.TRUSTED_SITE to false will automatically set\n * NATIVE_ARRAY_PROTOTYPES to false.\n */\ngoog.NATIVE_ARRAY_PROTOTYPES =\n    goog.define('goog.NATIVE_ARRAY_PROTOTYPES', goog.TRUSTED_SITE);\n\n\n/**\n * @define {boolean} If true, JSCompiler will use the native implementation of\n * array functions where appropriate (e.g., `Array#filter`) and remove the\n * unused pure JS implementation.\n */\nconst ASSUME_NATIVE_FUNCTIONS = goog.define(\n    'goog.array.ASSUME_NATIVE_FUNCTIONS', goog.FEATURESET_YEAR > 2012);\nexports.ASSUME_NATIVE_FUNCTIONS = ASSUME_NATIVE_FUNCTIONS;\n\n\n/**\n * Returns the last element in an array without removing it.\n * Same as {@link goog.array.last}.\n * @param {IArrayLike<T>|string} array The array.\n * @return {T} Last item in array.\n * @template T\n */\nfunction peek(array) {\n  return array[array.length - 1];\n}\nexports.peek = peek;\n\n\n/**\n * Returns the last element in an array without removing it.\n * Same as {@link goog.array.peek}.\n * @param {IArrayLike<T>|string} array The array.\n * @return {T} Last item in array.\n * @template T\n */\nexports.last = peek;\n\n// NOTE(arv): Since most of the array functions are generic it allows you to\n// pass an array-like object. Strings have a length and are considered array-\n// like. However, the 'in' operator does not work on strings so we cannot just\n// use the array path even if the browser supports indexing into strings. We\n// therefore end up splitting the string.\n\n\n/**\n * Returns the index of the first element of an array with a specified value, or\n * -1 if the element is not present in the array.\n *\n * See {@link http://tinyurl.com/developer-mozilla-org-array-indexof}\n *\n * @param {IArrayLike<T>|string} arr The array to be searched.\n * @param {T} obj The object for which we are searching.\n * @param {number=} opt_fromIndex The index at which to start the search. If\n *     omitted the search starts at index 0.\n * @return {number} The index of the first matching array element.\n * @template T\n */\nconst indexOf = goog.NATIVE_ARRAY_PROTOTYPES &&\n        (ASSUME_NATIVE_FUNCTIONS || Array.prototype.indexOf) ?\n    function(arr, obj, opt_fromIndex) {\n      asserts.assert(arr.length != null);\n\n      return Array.prototype.indexOf.call(arr, obj, opt_fromIndex);\n    } :\n    function(arr, obj, opt_fromIndex) {\n      var fromIndex = opt_fromIndex == null ?\n          0 :\n          (opt_fromIndex < 0 ? Math.max(0, arr.length + opt_fromIndex) :\n                               opt_fromIndex);\n\n      if (typeof arr === 'string') {\n        // Array.prototype.indexOf uses === so only strings should be found.\n        if (typeof obj !== 'string' || obj.length != 1) {\n          return -1;\n        }\n        return arr.indexOf(obj, fromIndex);\n      }\n\n      for (var i = fromIndex; i < arr.length; i++) {\n        if (i in arr && arr[i] === obj) return i;\n      }\n      return -1;\n    };\nexports.indexOf = indexOf;\n\n\n/**\n * Returns the index of the last element of an array with a specified value, or\n * -1 if the element is not present in the array.\n *\n * See {@link http://tinyurl.com/developer-mozilla-org-array-lastindexof}\n *\n * @param {!IArrayLike<T>|string} arr The array to be searched.\n * @param {T} obj The object for which we are searching.\n * @param {?number=} opt_fromIndex The index at which to start the search. If\n *     omitted the search starts at the end of the array.\n * @return {number} The index of the last matching array element.\n * @template T\n */\nconst lastIndexOf = goog.NATIVE_ARRAY_PROTOTYPES &&\n        (ASSUME_NATIVE_FUNCTIONS || Array.prototype.lastIndexOf) ?\n    function(arr, obj, opt_fromIndex) {\n      asserts.assert(arr.length != null);\n\n      // Firefox treats undefined and null as 0 in the fromIndex argument which\n      // leads it to always return -1\n      var fromIndex = opt_fromIndex == null ? arr.length - 1 : opt_fromIndex;\n      return Array.prototype.lastIndexOf.call(arr, obj, fromIndex);\n    } :\n    function(arr, obj, opt_fromIndex) {\n      var fromIndex = opt_fromIndex == null ? arr.length - 1 : opt_fromIndex;\n\n      if (fromIndex < 0) {\n        fromIndex = Math.max(0, arr.length + fromIndex);\n      }\n\n      if (typeof arr === 'string') {\n        // Array.prototype.lastIndexOf uses === so only strings should be found.\n        if (typeof obj !== 'string' || obj.length != 1) {\n          return -1;\n        }\n        return arr.lastIndexOf(obj, fromIndex);\n      }\n\n      for (var i = fromIndex; i >= 0; i--) {\n        if (i in arr && arr[i] === obj) return i;\n      }\n      return -1;\n    };\nexports.lastIndexOf = lastIndexOf;\n\n\n/**\n * Calls a function for each element in an array. Skips holes in the array.\n * See {@link http://tinyurl.com/developer-mozilla-org-array-foreach}\n *\n * @param {IArrayLike<T>|string} arr Array or array like object over\n *     which to iterate.\n * @param {?function(this: S, T, number, ?): ?} f The function to call for every\n *     element. This function takes 3 arguments (the element, the index and the\n *     array). The return value is ignored.\n * @param {S=} opt_obj The object to be used as the value of 'this' within f.\n * @template T,S\n */\nconst forEach = goog.NATIVE_ARRAY_PROTOTYPES &&\n        (ASSUME_NATIVE_FUNCTIONS || Array.prototype.forEach) ?\n    function(arr, f, opt_obj) {\n      asserts.assert(arr.length != null);\n\n      Array.prototype.forEach.call(arr, f, opt_obj);\n    } :\n    function(arr, f, opt_obj) {\n      var l = arr.length;  // must be fixed during loop... see docs\n      var arr2 = (typeof arr === 'string') ? arr.split('') : arr;\n      for (var i = 0; i < l; i++) {\n        if (i in arr2) {\n          f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr);\n        }\n      }\n    };\nexports.forEach = forEach;\n\n\n/**\n * Calls a function for each element in an array, starting from the last\n * element rather than the first.\n *\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this: S, T, number, ?): ?} f The function to call for every\n *     element. This function\n *     takes 3 arguments (the element, the index and the array). The return\n *     value is ignored.\n * @param {S=} opt_obj The object to be used as the value of 'this'\n *     within f.\n * @template T,S\n */\nfunction forEachRight(arr, f, opt_obj) {\n  var l = arr.length;  // must be fixed during loop... see docs\n  var arr2 = (typeof arr === 'string') ? arr.split('') : arr;\n  for (var i = l - 1; i >= 0; --i) {\n    if (i in arr2) {\n      f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr);\n    }\n  }\n}\nexports.forEachRight = forEachRight;\n\n\n/**\n * Calls a function for each element in an array, and if the function returns\n * true adds the element to a new array.\n *\n * See {@link http://tinyurl.com/developer-mozilla-org-array-filter}\n *\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, T, number, ?):boolean} f The function to call for\n *     every element. This function\n *     takes 3 arguments (the element, the index and the array) and must\n *     return a Boolean. If the return value is true the element is added to the\n *     result array. If it is false the element is not included.\n * @param {S=} opt_obj The object to be used as the value of 'this'\n *     within f.\n * @return {!Array<T>} a new array in which only elements that passed the test\n *     are present.\n * @template T,S\n */\nconst filter = goog.NATIVE_ARRAY_PROTOTYPES &&\n        (ASSUME_NATIVE_FUNCTIONS || Array.prototype.filter) ?\n    function(arr, f, opt_obj) {\n      asserts.assert(arr.length != null);\n\n      return Array.prototype.filter.call(arr, f, opt_obj);\n    } :\n    function(arr, f, opt_obj) {\n      var l = arr.length;  // must be fixed during loop... see docs\n      var res = [];\n      var resLength = 0;\n      var arr2 = (typeof arr === 'string') ? arr.split('') : arr;\n      for (var i = 0; i < l; i++) {\n        if (i in arr2) {\n          var val = arr2[i];  // in case f mutates arr2\n          if (f.call(/** @type {?} */ (opt_obj), val, i, arr)) {\n            res[resLength++] = val;\n          }\n        }\n      }\n      return res;\n    };\nexports.filter = filter;\n\n\n/**\n * Calls a function for each element in an array and inserts the result into a\n * new array.\n *\n * See {@link http://tinyurl.com/developer-mozilla-org-array-map}\n *\n * @param {IArrayLike<VALUE>|string} arr Array or array like object\n *     over which to iterate.\n * @param {function(this:THIS, VALUE, number, ?): RESULT} f The function to call\n *     for every element. This function takes 3 arguments (the element,\n *     the index and the array) and should return something. The result will be\n *     inserted into a new array.\n * @param {THIS=} opt_obj The object to be used as the value of 'this' within f.\n * @return {!Array<RESULT>} a new array with the results from f.\n * @template THIS, VALUE, RESULT\n */\nconst map = goog.NATIVE_ARRAY_PROTOTYPES &&\n        (ASSUME_NATIVE_FUNCTIONS || Array.prototype.map) ?\n    function(arr, f, opt_obj) {\n      asserts.assert(arr.length != null);\n\n      return Array.prototype.map.call(arr, f, opt_obj);\n    } :\n    function(arr, f, opt_obj) {\n      var l = arr.length;  // must be fixed during loop... see docs\n      var res = new Array(l);\n      var arr2 = (typeof arr === 'string') ? arr.split('') : arr;\n      for (var i = 0; i < l; i++) {\n        if (i in arr2) {\n          res[i] = f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr);\n        }\n      }\n      return res;\n    };\nexports.map = map;\n\n\n/**\n * Passes every element of an array into a function and accumulates the result.\n *\n * See {@link http://tinyurl.com/developer-mozilla-org-array-reduce}\n * Note that this implementation differs from the native Array.prototype.reduce\n * in that the initial value is assumed to be defined (the MDN docs linked above\n * recommend not omitting this parameter, although it is technically optional).\n *\n * For example:\n * var a = [1, 2, 3, 4];\n * reduce(a, function(r, v, i, arr) {return r + v;}, 0);\n * returns 10\n *\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {function(this:S, R, T, number, ?) : R} f The function to call for\n *     every element. This function\n *     takes 4 arguments (the function's previous result or the initial value,\n *     the value of the current array element, the current array index, and the\n *     array itself)\n *     function(previousValue, currentValue, index, array).\n * @param {?} val The initial value to pass into the function on the first call.\n * @param {S=} opt_obj  The object to be used as the value of 'this'\n *     within f.\n * @return {R} Result of evaluating f repeatedly across the values of the array.\n * @template T,S,R\n */\nconst reduce = goog.NATIVE_ARRAY_PROTOTYPES &&\n        (ASSUME_NATIVE_FUNCTIONS || Array.prototype.reduce) ?\n    function(arr, f, val, opt_obj) {\n      asserts.assert(arr.length != null);\n      if (opt_obj) {\n        f = goog.bind(f, opt_obj);\n      }\n      return Array.prototype.reduce.call(arr, f, val);\n    } :\n    function(arr, f, val, opt_obj) {\n      var rval = val;\n      forEach(arr, function(val, index) {\n        rval = f.call(/** @type {?} */ (opt_obj), rval, val, index, arr);\n      });\n      return rval;\n    };\nexports.reduce = reduce;\n\n\n/**\n * Passes every element of an array into a function and accumulates the result,\n * starting from the last element and working towards the first.\n *\n * See {@link http://tinyurl.com/developer-mozilla-org-array-reduceright}\n *\n * For example:\n * var a = ['a', 'b', 'c'];\n * reduceRight(a, function(r, v, i, arr) {return r + v;}, '');\n * returns 'cba'\n *\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, R, T, number, ?) : R} f The function to call for\n *     every element. This function\n *     takes 4 arguments (the function's previous result or the initial value,\n *     the value of the current array element, the current array index, and the\n *     array itself)\n *     function(previousValue, currentValue, index, array).\n * @param {?} val The initial value to pass into the function on the first call.\n * @param {S=} opt_obj The object to be used as the value of 'this'\n *     within f.\n * @return {R} Object returned as a result of evaluating f repeatedly across the\n *     values of the array.\n * @template T,S,R\n */\nconst reduceRight = goog.NATIVE_ARRAY_PROTOTYPES &&\n        (ASSUME_NATIVE_FUNCTIONS || Array.prototype.reduceRight) ?\n    function(arr, f, val, opt_obj) {\n      asserts.assert(arr.length != null);\n      asserts.assert(f != null);\n      if (opt_obj) {\n        f = goog.bind(f, opt_obj);\n      }\n      return Array.prototype.reduceRight.call(arr, f, val);\n    } :\n    function(arr, f, val, opt_obj) {\n      var rval = val;\n      forEachRight(arr, function(val, index) {\n        rval = f.call(/** @type {?} */ (opt_obj), rval, val, index, arr);\n      });\n      return rval;\n    };\nexports.reduceRight = reduceRight;\n\n\n/**\n * Calls f for each element of an array. If any call returns true, some()\n * returns true (without checking the remaining elements). If all calls\n * return false, some() returns false.\n *\n * See {@link http://tinyurl.com/developer-mozilla-org-array-some}\n *\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, T, number, ?) : boolean} f The function to call for\n *     for every element. This function takes 3 arguments (the element, the\n *     index and the array) and should return a boolean.\n * @param {S=} opt_obj  The object to be used as the value of 'this'\n *     within f.\n * @return {boolean} true if any element passes the test.\n * @template T,S\n */\nconst some = goog.NATIVE_ARRAY_PROTOTYPES &&\n        (ASSUME_NATIVE_FUNCTIONS || Array.prototype.some) ?\n    function(arr, f, opt_obj) {\n      asserts.assert(arr.length != null);\n\n      return Array.prototype.some.call(arr, f, opt_obj);\n    } :\n    function(arr, f, opt_obj) {\n      var l = arr.length;  // must be fixed during loop... see docs\n      var arr2 = (typeof arr === 'string') ? arr.split('') : arr;\n      for (var i = 0; i < l; i++) {\n        if (i in arr2 && f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr)) {\n          return true;\n        }\n      }\n      return false;\n    };\nexports.some = some;\n\n\n/**\n * Call f for each element of an array. If all calls return true, every()\n * returns true. If any call returns false, every() returns false and\n * does not continue to check the remaining elements.\n *\n * See {@link http://tinyurl.com/developer-mozilla-org-array-every}\n *\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, T, number, ?) : boolean} f The function to call for\n *     for every element. This function takes 3 arguments (the element, the\n *     index and the array) and should return a boolean.\n * @param {S=} opt_obj The object to be used as the value of 'this'\n *     within f.\n * @return {boolean} false if any element fails the test.\n * @template T,S\n */\nconst every = goog.NATIVE_ARRAY_PROTOTYPES &&\n        (ASSUME_NATIVE_FUNCTIONS || Array.prototype.every) ?\n    function(arr, f, opt_obj) {\n      asserts.assert(arr.length != null);\n\n      return Array.prototype.every.call(arr, f, opt_obj);\n    } :\n    function(arr, f, opt_obj) {\n      var l = arr.length;  // must be fixed during loop... see docs\n      var arr2 = (typeof arr === 'string') ? arr.split('') : arr;\n      for (var i = 0; i < l; i++) {\n        if (i in arr2 && !f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr)) {\n          return false;\n        }\n      }\n      return true;\n    };\nexports.every = every;\n\n\n/**\n * Counts the array elements that fulfill the predicate, i.e. for which the\n * callback function returns true. Skips holes in the array.\n *\n * @param {!IArrayLike<T>|string} arr Array or array like object\n *     over which to iterate.\n * @param {function(this: S, T, number, ?): boolean} f The function to call for\n *     every element. Takes 3 arguments (the element, the index and the array).\n * @param {S=} opt_obj The object to be used as the value of 'this' within f.\n * @return {number} The number of the matching elements.\n * @template T,S\n */\nfunction count(arr, f, opt_obj) {\n  var count = 0;\n  forEach(arr, function(element, index, arr) {\n    if (f.call(/** @type {?} */ (opt_obj), element, index, arr)) {\n      ++count;\n    }\n  }, opt_obj);\n  return count;\n}\nexports.count = count;\n\n\n/**\n * Search an array for the first element that satisfies a given condition and\n * return that element.\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, T, number, ?) : boolean} f The function to call\n *     for every element. This function takes 3 arguments (the element, the\n *     index and the array) and should return a boolean.\n * @param {S=} opt_obj An optional \"this\" context for the function.\n * @return {T|null} The first array element that passes the test, or null if no\n *     element is found.\n * @template T,S\n */\nfunction find(arr, f, opt_obj) {\n  var i = findIndex(arr, f, opt_obj);\n  return i < 0 ? null : typeof arr === 'string' ? arr.charAt(i) : arr[i];\n}\nexports.find = find;\n\n\n/**\n * Search an array for the first element that satisfies a given condition and\n * return its index.\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, T, number, ?) : boolean} f The function to call for\n *     every element. This function\n *     takes 3 arguments (the element, the index and the array) and should\n *     return a boolean.\n * @param {S=} opt_obj An optional \"this\" context for the function.\n * @return {number} The index of the first array element that passes the test,\n *     or -1 if no element is found.\n * @template T,S\n */\nfunction findIndex(arr, f, opt_obj) {\n  var l = arr.length;  // must be fixed during loop... see docs\n  var arr2 = (typeof arr === 'string') ? arr.split('') : arr;\n  for (var i = 0; i < l; i++) {\n    if (i in arr2 && f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr)) {\n      return i;\n    }\n  }\n  return -1;\n}\nexports.findIndex = findIndex;\n\n\n/**\n * Search an array (in reverse order) for the last element that satisfies a\n * given condition and return that element.\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, T, number, ?) : boolean} f The function to call\n *     for every element. This function\n *     takes 3 arguments (the element, the index and the array) and should\n *     return a boolean.\n * @param {S=} opt_obj An optional \"this\" context for the function.\n * @return {T|null} The last array element that passes the test, or null if no\n *     element is found.\n * @template T,S\n */\nfunction findRight(arr, f, opt_obj) {\n  var i = findIndexRight(arr, f, opt_obj);\n  return i < 0 ? null : typeof arr === 'string' ? arr.charAt(i) : arr[i];\n}\nexports.findRight = findRight;\n\n\n/**\n * Search an array (in reverse order) for the last element that satisfies a\n * given condition and return its index.\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, T, number, ?) : boolean} f The function to call\n *     for every element. This function\n *     takes 3 arguments (the element, the index and the array) and should\n *     return a boolean.\n * @param {S=} opt_obj An optional \"this\" context for the function.\n * @return {number} The index of the last array element that passes the test,\n *     or -1 if no element is found.\n * @template T,S\n */\nfunction findIndexRight(arr, f, opt_obj) {\n  var l = arr.length;  // must be fixed during loop... see docs\n  var arr2 = (typeof arr === 'string') ? arr.split('') : arr;\n  for (var i = l - 1; i >= 0; i--) {\n    if (i in arr2 && f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr)) {\n      return i;\n    }\n  }\n  return -1;\n}\nexports.findIndexRight = findIndexRight;\n\n\n/**\n * Whether the array contains the given object.\n * @param {IArrayLike<?>|string} arr The array to test for the presence of the\n *     element.\n * @param {*} obj The object for which to test.\n * @return {boolean} true if obj is present.\n */\nfunction contains(arr, obj) {\n  return indexOf(arr, obj) >= 0;\n}\nexports.contains = contains;\n\n\n/**\n * Whether the array is empty.\n * @param {IArrayLike<?>|string} arr The array to test.\n * @return {boolean} true if empty.\n */\nfunction isEmpty(arr) {\n  return arr.length == 0;\n}\nexports.isEmpty = isEmpty;\n\n\n/**\n * Clears the array.\n * @param {IArrayLike<?>} arr Array or array like object to clear.\n */\nfunction clear(arr) {\n  // For non real arrays we don't have the magic length so we delete the\n  // indices.\n  if (!Array.isArray(arr)) {\n    for (var i = arr.length - 1; i >= 0; i--) {\n      delete arr[i];\n    }\n  }\n  arr.length = 0;\n}\nexports.clear = clear;\n\n\n/**\n * Pushes an item into an array, if it's not already in the array.\n * @param {Array<T>} arr Array into which to insert the item.\n * @param {T} obj Value to add.\n * @template T\n */\nfunction insert(arr, obj) {\n  if (!contains(arr, obj)) {\n    arr.push(obj);\n  }\n}\nexports.insert = insert;\n\n\n/**\n * Inserts an object at the given index of the array.\n * @param {IArrayLike<?>} arr The array to modify.\n * @param {*} obj The object to insert.\n * @param {number=} opt_i The index at which to insert the object. If omitted,\n *      treated as 0. A negative index is counted from the end of the array.\n */\nfunction insertAt(arr, obj, opt_i) {\n  splice(arr, opt_i, 0, obj);\n}\nexports.insertAt = insertAt;\n\n\n/**\n * Inserts at the given index of the array, all elements of another array.\n * @param {IArrayLike<?>} arr The array to modify.\n * @param {IArrayLike<?>} elementsToAdd The array of elements to add.\n * @param {number=} opt_i The index at which to insert the object. If omitted,\n *      treated as 0. A negative index is counted from the end of the array.\n */\nfunction insertArrayAt(arr, elementsToAdd, opt_i) {\n  goog.partial(splice, arr, opt_i, 0).apply(null, elementsToAdd);\n}\nexports.insertArrayAt = insertArrayAt;\n\n\n/**\n * Inserts an object into an array before a specified object.\n * @param {Array<T>} arr The array to modify.\n * @param {T} obj The object to insert.\n * @param {T=} opt_obj2 The object before which obj should be inserted. If obj2\n *     is omitted or not found, obj is inserted at the end of the array.\n * @template T\n */\nfunction insertBefore(arr, obj, opt_obj2) {\n  var i;\n  if (arguments.length == 2 || (i = indexOf(arr, opt_obj2)) < 0) {\n    arr.push(obj);\n  } else {\n    insertAt(arr, obj, i);\n  }\n}\nexports.insertBefore = insertBefore;\n\n\n/**\n * Removes the first occurrence of a particular value from an array.\n * @param {IArrayLike<T>} arr Array from which to remove\n *     value.\n * @param {T} obj Object to remove.\n * @return {boolean} True if an element was removed.\n * @template T\n */\nfunction remove(arr, obj) {\n  var i = indexOf(arr, obj);\n  var rv;\n  if ((rv = i >= 0)) {\n    removeAt(arr, i);\n  }\n  return rv;\n}\nexports.remove = remove;\n\n\n/**\n * Removes the last occurrence of a particular value from an array.\n * @param {!IArrayLike<T>} arr Array from which to remove value.\n * @param {T} obj Object to remove.\n * @return {boolean} True if an element was removed.\n * @template T\n */\nfunction removeLast(arr, obj) {\n  var i = lastIndexOf(arr, obj);\n  if (i >= 0) {\n    removeAt(arr, i);\n    return true;\n  }\n  return false;\n}\nexports.removeLast = removeLast;\n\n\n/**\n * Removes from an array the element at index i\n * @param {IArrayLike<?>} arr Array or array like object from which to\n *     remove value.\n * @param {number} i The index to remove.\n * @return {boolean} True if an element was removed.\n */\nfunction removeAt(arr, i) {\n  asserts.assert(arr.length != null);\n\n  // use generic form of splice\n  // splice returns the removed items and if successful the length of that\n  // will be 1\n  return Array.prototype.splice.call(arr, i, 1).length == 1;\n}\nexports.removeAt = removeAt;\n\n\n/**\n * Removes the first value that satisfies the given condition.\n * @param {IArrayLike<T>} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, T, number, ?) : boolean} f The function to call\n *     for every element. This function\n *     takes 3 arguments (the element, the index and the array) and should\n *     return a boolean.\n * @param {S=} opt_obj An optional \"this\" context for the function.\n * @return {boolean} True if an element was removed.\n * @template T,S\n */\nfunction removeIf(arr, f, opt_obj) {\n  var i = findIndex(arr, f, opt_obj);\n  if (i >= 0) {\n    removeAt(arr, i);\n    return true;\n  }\n  return false;\n}\nexports.removeIf = removeIf;\n\n\n/**\n * Removes all values that satisfy the given condition.\n * @param {IArrayLike<T>} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, T, number, ?) : boolean} f The function to call\n *     for every element. This function\n *     takes 3 arguments (the element, the index and the array) and should\n *     return a boolean.\n * @param {S=} opt_obj An optional \"this\" context for the function.\n * @return {number} The number of items removed\n * @template T,S\n */\nfunction removeAllIf(arr, f, opt_obj) {\n  var removedCount = 0;\n  forEachRight(arr, function(val, index) {\n    if (f.call(/** @type {?} */ (opt_obj), val, index, arr)) {\n      if (removeAt(arr, index)) {\n        removedCount++;\n      }\n    }\n  });\n  return removedCount;\n}\nexports.removeAllIf = removeAllIf;\n\n\n/**\n * Returns a new array that is the result of joining the arguments.  If arrays\n * are passed then their items are added, however, if non-arrays are passed they\n * will be added to the return array as is.\n *\n * Note that ArrayLike objects will be added as is, rather than having their\n * items added.\n *\n * concat([1, 2], [3, 4]) -> [1, 2, 3, 4]\n * concat(0, [1, 2]) -> [0, 1, 2]\n * concat([1, 2], null) -> [1, 2, null]\n *\n * There is bug in all current versions of IE (6, 7 and 8) where arrays created\n * in an iframe become corrupted soon (not immediately) after the iframe is\n * destroyed. This is common if loading data via goog.net.IframeIo, for example.\n * This corruption only affects the concat method which will start throwing\n * Catastrophic Errors (#-2147418113).\n *\n * See http://endoflow.com/scratch/corrupted-arrays.html for a test case.\n *\n * Internally goog.array should use this, so that all methods will continue to\n * work on these broken array objects.\n *\n * @param {...*} var_args Items to concatenate.  Arrays will have each item\n *     added, while primitives and objects will be added as is.\n * @return {!Array<?>} The new resultant array.\n */\nfunction concat(var_args) {\n  return Array.prototype.concat.apply([], arguments);\n}\nexports.concat = concat;\n\n\n/**\n * Returns a new array that contains the contents of all the arrays passed.\n * @param {...!Array<T>} var_args\n * @return {!Array<T>}\n * @template T\n */\nfunction join(var_args) {\n  return Array.prototype.concat.apply([], arguments);\n}\nexports.join = join;\n\n\n/**\n * Converts an object to an array.\n * @param {IArrayLike<T>|string} object  The object to convert to an\n *     array.\n * @return {!Array<T>} The object converted into an array. If object has a\n *     length property, every property indexed with a non-negative number\n *     less than length will be included in the result. If object does not\n *     have a length property, an empty array will be returned.\n * @template T\n */\nfunction toArray(object) {\n  var length = object.length;\n\n  // If length is not a number the following is false. This case is kept for\n  // backwards compatibility since there are callers that pass objects that are\n  // not array like.\n  if (length > 0) {\n    var rv = new Array(length);\n    for (var i = 0; i < length; i++) {\n      rv[i] = object[i];\n    }\n    return rv;\n  }\n  return [];\n}\nexports.toArray = toArray;\n\n\n/**\n * Does a shallow copy of an array.\n * @param {IArrayLike<T>|string} arr  Array or array-like object to\n *     clone.\n * @return {!Array<T>} Clone of the input array.\n * @template T\n */\nconst clone = toArray;\nexports.clone = clone;\n\n\n/**\n * Extends an array with another array, element, or \"array like\" object.\n * This function operates 'in-place', it does not create a new Array.\n *\n * Example:\n * var a = [];\n * extend(a, [0, 1]);\n * a; // [0, 1]\n * extend(a, 2);\n * a; // [0, 1, 2]\n *\n * @param {Array<VALUE>} arr1  The array to modify.\n * @param {...(IArrayLike<VALUE>|VALUE)} var_args The elements or arrays of\n *     elements to add to arr1.\n * @template VALUE\n */\nfunction extend(arr1, var_args) {\n  for (var i = 1; i < arguments.length; i++) {\n    var arr2 = arguments[i];\n    if (goog.isArrayLike(arr2)) {\n      var len1 = arr1.length || 0;\n      var len2 = arr2.length || 0;\n      arr1.length = len1 + len2;\n      for (var j = 0; j < len2; j++) {\n        arr1[len1 + j] = arr2[j];\n      }\n    } else {\n      arr1.push(arr2);\n    }\n  }\n}\nexports.extend = extend;\n\n\n/**\n * Adds or removes elements from an array. This is a generic version of Array\n * splice. This means that it might work on other objects similar to arrays,\n * such as the arguments object.\n *\n * @param {IArrayLike<T>} arr The array to modify.\n * @param {number|undefined} index The index at which to start changing the\n *     array. If not defined, treated as 0.\n * @param {number} howMany How many elements to remove (0 means no removal. A\n *     value below 0 is treated as zero and so is any other non number. Numbers\n *     are floored).\n * @param {...T} var_args Optional, additional elements to insert into the\n *     array.\n * @return {!Array<T>} the removed elements.\n * @template T\n */\nfunction splice(arr, index, howMany, var_args) {\n  asserts.assert(arr.length != null);\n\n  return Array.prototype.splice.apply(arr, slice(arguments, 1));\n}\nexports.splice = splice;\n\n\n/**\n * Returns a new array from a segment of an array. This is a generic version of\n * Array slice. This means that it might work on other objects similar to\n * arrays, such as the arguments object.\n *\n * @param {IArrayLike<T>|string} arr The array from\n * which to copy a segment.\n * @param {number} start The index of the first element to copy.\n * @param {number=} opt_end The index after the last element to copy.\n * @return {!Array<T>} A new array containing the specified segment of the\n *     original array.\n * @template T\n */\nfunction slice(arr, start, opt_end) {\n  asserts.assert(arr.length != null);\n\n  // passing 1 arg to slice is not the same as passing 2 where the second is\n  // null or undefined (in that case the second argument is treated as 0).\n  // we could use slice on the arguments object and then use apply instead of\n  // testing the length\n  if (arguments.length <= 2) {\n    return Array.prototype.slice.call(arr, start);\n  } else {\n    return Array.prototype.slice.call(arr, start, opt_end);\n  }\n}\nexports.slice = slice;\n\n\n/**\n * Removes all duplicates from an array (retaining only the first\n * occurrence of each array element).  This function modifies the\n * array in place and doesn't change the order of the non-duplicate items.\n *\n * For objects, duplicates are identified as having the same unique ID as\n * defined by {@link goog.getUid}.\n *\n * Alternatively you can specify a custom hash function that returns a unique\n * value for each item in the array it should consider unique.\n *\n * Runtime: N,\n * Worstcase space: 2N (no dupes)\n *\n * @param {IArrayLike<T>} arr The array from which to remove\n *     duplicates.\n * @param {Array=} opt_rv An optional array in which to return the results,\n *     instead of performing the removal inplace.  If specified, the original\n *     array will remain unchanged.\n * @param {function(T):string=} opt_hashFn An optional function to use to\n *     apply to every item in the array. This function should return a unique\n *     value for each item in the array it should consider unique.\n * @template T\n */\nfunction removeDuplicates(arr, opt_rv, opt_hashFn) {\n  var returnArray = opt_rv || arr;\n  var defaultHashFn = function(item) {\n    // Prefix each type with a single character representing the type to\n    // prevent conflicting keys (e.g. true and 'true').\n    return goog.isObject(item) ? 'o' + goog.getUid(item) :\n                                 (typeof item).charAt(0) + item;\n  };\n  var hashFn = opt_hashFn || defaultHashFn;\n\n  var seen = {}, cursorInsert = 0, cursorRead = 0;\n  while (cursorRead < arr.length) {\n    var current = arr[cursorRead++];\n    var key = hashFn(current);\n    if (!Object.prototype.hasOwnProperty.call(seen, key)) {\n      seen[key] = true;\n      returnArray[cursorInsert++] = current;\n    }\n  }\n  returnArray.length = cursorInsert;\n}\nexports.removeDuplicates = removeDuplicates;\n\n\n/**\n * Searches the specified array for the specified target using the binary\n * search algorithm.  If no opt_compareFn is specified, elements are compared\n * using <code>defaultCompare</code>, which compares the elements\n * using the built in < and > operators.  This will produce the expected\n * behavior for homogeneous arrays of String(s) and Number(s). The array\n * specified <b>must</b> be sorted in ascending order (as defined by the\n * comparison function).  If the array is not sorted, results are undefined.\n * If the array contains multiple instances of the specified target value, the\n * left-most instance will be found.\n *\n * Runtime: O(log n)\n *\n * @param {IArrayLike<VALUE>} arr The array to be searched.\n * @param {TARGET} target The sought value.\n * @param {function(TARGET, VALUE): number=} opt_compareFn Optional comparison\n *     function by which the array is ordered. Should take 2 arguments to\n *     compare, the target value and an element from your array, and return a\n *     negative number, zero, or a positive number depending on whether the\n *     first argument is less than, equal to, or greater than the second.\n * @return {number} Lowest index of the target value if found, otherwise\n *     (-(insertion point) - 1). The insertion point is where the value should\n *     be inserted into arr to preserve the sorted property.  Return value >= 0\n *     iff target is found.\n * @template TARGET, VALUE\n */\nfunction binarySearch(arr, target, opt_compareFn) {\n  return binarySearch_(\n      arr, opt_compareFn || defaultCompare, false /* isEvaluator */, target);\n}\nexports.binarySearch = binarySearch;\n\n\n/**\n * Selects an index in the specified array using the binary search algorithm.\n * The evaluator receives an element and determines whether the desired index\n * is before, at, or after it.  The evaluator must be consistent (formally,\n * map(map(arr, evaluator, opt_obj), goog.math.sign)\n * must be monotonically non-increasing).\n *\n * Runtime: O(log n)\n *\n * @param {IArrayLike<VALUE>} arr The array to be searched.\n * @param {function(this:THIS, VALUE, number, ?): number} evaluator\n *     Evaluator function that receives 3 arguments (the element, the index and\n *     the array). Should return a negative number, zero, or a positive number\n *     depending on whether the desired index is before, at, or after the\n *     element passed to it.\n * @param {THIS=} opt_obj The object to be used as the value of 'this'\n *     within evaluator.\n * @return {number} Index of the leftmost element matched by the evaluator, if\n *     such exists; otherwise (-(insertion point) - 1). The insertion point is\n *     the index of the first element for which the evaluator returns negative,\n *     or arr.length if no such element exists. The return value is non-negative\n *     iff a match is found.\n * @template THIS, VALUE\n */\nfunction binarySelect(arr, evaluator, opt_obj) {\n  return binarySearch_(\n      arr, evaluator, true /* isEvaluator */, undefined /* opt_target */,\n      opt_obj);\n}\nexports.binarySelect = binarySelect;\n\n\n/**\n * Implementation of a binary search algorithm which knows how to use both\n * comparison functions and evaluators. If an evaluator is provided, will call\n * the evaluator with the given optional data object, conforming to the\n * interface defined in binarySelect. Otherwise, if a comparison function is\n * provided, will call the comparison function against the given data object.\n *\n * This implementation purposefully does not use goog.bind or goog.partial for\n * performance reasons.\n *\n * Runtime: O(log n)\n *\n * @param {IArrayLike<?>} arr The array to be searched.\n * @param {function(?, ?, ?): number | function(?, ?): number} compareFn\n *     Either an evaluator or a comparison function, as defined by binarySearch\n *     and binarySelect above.\n * @param {boolean} isEvaluator Whether the function is an evaluator or a\n *     comparison function.\n * @param {?=} opt_target If the function is a comparison function, then\n *     this is the target to binary search for.\n * @param {Object=} opt_selfObj If the function is an evaluator, this is an\n *     optional this object for the evaluator.\n * @return {number} Lowest index of the target value if found, otherwise\n *     (-(insertion point) - 1). The insertion point is where the value should\n *     be inserted into arr to preserve the sorted property.  Return value >= 0\n *     iff target is found.\n * @private\n */\nfunction binarySearch_(arr, compareFn, isEvaluator, opt_target, opt_selfObj) {\n  var left = 0;            // inclusive\n  var right = arr.length;  // exclusive\n  var found;\n  while (left < right) {\n    var middle = left + ((right - left) >>> 1);\n    var compareResult;\n    if (isEvaluator) {\n      compareResult = compareFn.call(opt_selfObj, arr[middle], middle, arr);\n    } else {\n      // NOTE(dimvar): To avoid this cast, we'd have to use function overloading\n      // for the type of binarySearch_, which the type system can't express yet.\n      compareResult = /** @type {function(?, ?): number} */ (compareFn)(\n          opt_target, arr[middle]);\n    }\n    if (compareResult > 0) {\n      left = middle + 1;\n    } else {\n      right = middle;\n      // We are looking for the lowest index so we can't return immediately.\n      found = !compareResult;\n    }\n  }\n  // left is the index if found, or the insertion point otherwise.\n  // Avoiding bitwise not operator, as that causes a loss in precision for array\n  // indexes outside the bounds of a 32-bit signed integer.  Array indexes have\n  // a maximum value of 2^32-2 https://tc39.es/ecma262/#array-index\n  return found ? left : -left - 1;\n}\n\n\n/**\n * Sorts the specified array into ascending order.  If no opt_compareFn is\n * specified, elements are compared using\n * <code>defaultCompare</code>, which compares the elements using\n * the built in < and > operators.  This will produce the expected behavior\n * for homogeneous arrays of String(s) and Number(s), unlike the native sort,\n * but will give unpredictable results for heterogeneous lists of strings and\n * numbers with different numbers of digits.\n *\n * This sort is not guaranteed to be stable.\n *\n * Runtime: Same as `Array.prototype.sort`\n *\n * @param {Array<T>} arr The array to be sorted.\n * @param {?function(T,T):number=} opt_compareFn Optional comparison\n *     function by which the\n *     array is to be ordered. Should take 2 arguments to compare, and return a\n *     negative number, zero, or a positive number depending on whether the\n *     first argument is less than, equal to, or greater than the second.\n * @template T\n */\nfunction sort(arr, opt_compareFn) {\n  // TODO(arv): Update type annotation since null is not accepted.\n  arr.sort(opt_compareFn || defaultCompare);\n}\nexports.sort = sort;\n\n\n/**\n * Sorts the specified array into ascending order in a stable way.  If no\n * opt_compareFn is specified, elements are compared using\n * <code>defaultCompare</code>, which compares the elements using\n * the built in < and > operators.  This will produce the expected behavior\n * for homogeneous arrays of String(s) and Number(s).\n *\n * Runtime: Same as `Array.prototype.sort`, plus an additional\n * O(n) overhead of copying the array twice.\n *\n * @param {Array<T>} arr The array to be sorted.\n * @param {?function(T, T): number=} opt_compareFn Optional comparison function\n *     by which the array is to be ordered. Should take 2 arguments to compare,\n *     and return a negative number, zero, or a positive number depending on\n *     whether the first argument is less than, equal to, or greater than the\n *     second.\n * @template T\n */\nfunction stableSort(arr, opt_compareFn) {\n  var compArr = new Array(arr.length);\n  for (var i = 0; i < arr.length; i++) {\n    compArr[i] = {index: i, value: arr[i]};\n  }\n  var valueCompareFn = opt_compareFn || defaultCompare;\n  function stableCompareFn(obj1, obj2) {\n    return valueCompareFn(obj1.value, obj2.value) || obj1.index - obj2.index;\n  }\n  sort(compArr, stableCompareFn);\n  for (var i = 0; i < arr.length; i++) {\n    arr[i] = compArr[i].value;\n  }\n}\nexports.stableSort = stableSort;\n\n\n/**\n * Sort the specified array into ascending order based on item keys\n * returned by the specified key function.\n * If no opt_compareFn is specified, the keys are compared in ascending order\n * using <code>defaultCompare</code>.\n *\n * Runtime: O(S(f(n)), where S is runtime of <code>sort</code>\n * and f(n) is runtime of the key function.\n *\n * @param {Array<T>} arr The array to be sorted.\n * @param {function(T): K} keyFn Function taking array element and returning\n *     a key used for sorting this element.\n * @param {?function(K, K): number=} opt_compareFn Optional comparison function\n *     by which the keys are to be ordered. Should take 2 arguments to compare,\n *     and return a negative number, zero, or a positive number depending on\n *     whether the first argument is less than, equal to, or greater than the\n *     second.\n * @template T,K\n */\nfunction sortByKey(arr, keyFn, opt_compareFn) {\n  var keyCompareFn = opt_compareFn || defaultCompare;\n  sort(arr, function(a, b) {\n    return keyCompareFn(keyFn(a), keyFn(b));\n  });\n}\nexports.sortByKey = sortByKey;\n\n\n/**\n * Sorts an array of objects by the specified object key and compare\n * function. If no compare function is provided, the key values are\n * compared in ascending order using <code>defaultCompare</code>.\n * This won't work for keys that get renamed by the compiler. So use\n * {'foo': 1, 'bar': 2} rather than {foo: 1, bar: 2}.\n * @param {Array<Object>} arr An array of objects to sort.\n * @param {string} key The object key to sort by.\n * @param {Function=} opt_compareFn The function to use to compare key\n *     values.\n */\nfunction sortObjectsByKey(arr, key, opt_compareFn) {\n  sortByKey(arr, function(obj) {\n    return obj[key];\n  }, opt_compareFn);\n}\nexports.sortObjectsByKey = sortObjectsByKey;\n\n\n/**\n * Tells if the array is sorted.\n * @param {!IArrayLike<T>} arr The array.\n * @param {?function(T,T):number=} opt_compareFn Function to compare the\n *     array elements.\n *     Should take 2 arguments to compare, and return a negative number, zero,\n *     or a positive number depending on whether the first argument is less\n *     than, equal to, or greater than the second.\n * @param {boolean=} opt_strict If true no equal elements are allowed.\n * @return {boolean} Whether the array is sorted.\n * @template T\n */\nfunction isSorted(arr, opt_compareFn, opt_strict) {\n  var compare = opt_compareFn || defaultCompare;\n  for (var i = 1; i < arr.length; i++) {\n    var compareResult = compare(arr[i - 1], arr[i]);\n    if (compareResult > 0 || compareResult == 0 && opt_strict) {\n      return false;\n    }\n  }\n  return true;\n}\nexports.isSorted = isSorted;\n\n\n/**\n * Compares two arrays for equality. Two arrays are considered equal if they\n * have the same length and their corresponding elements are equal according to\n * the comparison function.\n *\n * @param {IArrayLike<A>} arr1 The first array to compare.\n * @param {IArrayLike<B>} arr2 The second array to compare.\n * @param {?function(A,B):boolean=} opt_equalsFn Optional comparison function.\n *     Should take 2 arguments to compare, and return true if the arguments\n *     are equal. Defaults to {@link goog.array.defaultCompareEquality} which\n *     compares the elements using the built-in '===' operator.\n * @return {boolean} Whether the two arrays are equal.\n * @template A\n * @template B\n */\nfunction equals(arr1, arr2, opt_equalsFn) {\n  if (!goog.isArrayLike(arr1) || !goog.isArrayLike(arr2) ||\n      arr1.length != arr2.length) {\n    return false;\n  }\n  var l = arr1.length;\n  var equalsFn = opt_equalsFn || defaultCompareEquality;\n  for (var i = 0; i < l; i++) {\n    if (!equalsFn(arr1[i], arr2[i])) {\n      return false;\n    }\n  }\n  return true;\n}\nexports.equals = equals;\n\n\n/**\n * 3-way array compare function.\n * @param {!IArrayLike<VALUE>} arr1 The first array to\n *     compare.\n * @param {!IArrayLike<VALUE>} arr2 The second array to\n *     compare.\n * @param {function(VALUE, VALUE): number=} opt_compareFn Optional comparison\n *     function by which the array is to be ordered. Should take 2 arguments to\n *     compare, and return a negative number, zero, or a positive number\n *     depending on whether the first argument is less than, equal to, or\n *     greater than the second.\n * @return {number} Negative number, zero, or a positive number depending on\n *     whether the first argument is less than, equal to, or greater than the\n *     second.\n * @template VALUE\n */\nfunction compare3(arr1, arr2, opt_compareFn) {\n  var compare = opt_compareFn || defaultCompare;\n  var l = Math.min(arr1.length, arr2.length);\n  for (var i = 0; i < l; i++) {\n    var result = compare(arr1[i], arr2[i]);\n    if (result != 0) {\n      return result;\n    }\n  }\n  return defaultCompare(arr1.length, arr2.length);\n}\nexports.compare3 = compare3;\n\n\n/**\n * Compares its two arguments for order, using the built in < and >\n * operators.\n * @param {VALUE} a The first object to be compared.\n * @param {VALUE} b The second object to be compared.\n * @return {number} A negative number, zero, or a positive number as the first\n *     argument is less than, equal to, or greater than the second,\n *     respectively.\n * @template VALUE\n */\nfunction defaultCompare(a, b) {\n  return a > b ? 1 : a < b ? -1 : 0;\n}\nexports.defaultCompare = defaultCompare;\n\n\n/**\n * Compares its two arguments for inverse order, using the built in < and >\n * operators.\n * @param {VALUE} a The first object to be compared.\n * @param {VALUE} b The second object to be compared.\n * @return {number} A negative number, zero, or a positive number as the first\n *     argument is greater than, equal to, or less than the second,\n *     respectively.\n * @template VALUE\n */\nfunction inverseDefaultCompare(a, b) {\n  return -defaultCompare(a, b);\n}\nexports.inverseDefaultCompare = inverseDefaultCompare;\n\n\n/**\n * Compares its two arguments for equality, using the built in === operator.\n * @param {*} a The first object to compare.\n * @param {*} b The second object to compare.\n * @return {boolean} True if the two arguments are equal, false otherwise.\n */\nfunction defaultCompareEquality(a, b) {\n  return a === b;\n}\nexports.defaultCompareEquality = defaultCompareEquality;\n\n\n/**\n * Inserts a value into a sorted array. The array is not modified if the\n * value is already present.\n * @param {IArrayLike<VALUE>} array The array to modify.\n * @param {VALUE} value The object to insert.\n * @param {function(VALUE, VALUE): number=} opt_compareFn Optional comparison\n *     function by which the array is ordered. Should take 2 arguments to\n *     compare, and return a negative number, zero, or a positive number\n *     depending on whether the first argument is less than, equal to, or\n *     greater than the second.\n * @return {boolean} True if an element was inserted.\n * @template VALUE\n */\nfunction binaryInsert(array, value, opt_compareFn) {\n  var index = binarySearch(array, value, opt_compareFn);\n  if (index < 0) {\n    insertAt(array, value, -(index + 1));\n    return true;\n  }\n  return false;\n}\nexports.binaryInsert = binaryInsert;\n\n\n/**\n * Removes a value from a sorted array.\n * @param {!IArrayLike<VALUE>} array The array to modify.\n * @param {VALUE} value The object to remove.\n * @param {function(VALUE, VALUE): number=} opt_compareFn Optional comparison\n *     function by which the array is ordered. Should take 2 arguments to\n *     compare, and return a negative number, zero, or a positive number\n *     depending on whether the first argument is less than, equal to, or\n *     greater than the second.\n * @return {boolean} True if an element was removed.\n * @template VALUE\n */\nfunction binaryRemove(array, value, opt_compareFn) {\n  var index = binarySearch(array, value, opt_compareFn);\n  return (index >= 0) ? removeAt(array, index) : false;\n}\nexports.binaryRemove = binaryRemove;\n\n\n/**\n * Splits an array into disjoint buckets according to a splitting function.\n * @param {IArrayLike<T>} array The array.\n * @param {function(this:S, T, number, !IArrayLike<T>):?} sorter Function to\n *     call for every element.  This takes 3 arguments (the element, the index\n *     and the array) and must return a valid object key (a string, number,\n *     etc), or undefined, if that object should not be placed in a bucket.\n * @param {S=} opt_obj The object to be used as the value of 'this' within\n *     sorter.\n * @return {!Object<!Array<T>>} An object, with keys being all of the unique\n *     return values of sorter, and values being arrays containing the items for\n *     which the splitter returned that key.\n * @template T,S\n */\nfunction bucket(array, sorter, opt_obj) {\n  var buckets = {};\n\n  for (var i = 0; i < array.length; i++) {\n    var value = array[i];\n    var key = sorter.call(/** @type {?} */ (opt_obj), value, i, array);\n    if (key !== undefined) {\n      // Push the value to the right bucket, creating it if necessary.\n      var bucket = buckets[key] || (buckets[key] = []);\n      bucket.push(value);\n    }\n  }\n\n  return buckets;\n}\nexports.bucket = bucket;\n\n\n/**\n * Creates a new object built from the provided array and the key-generation\n * function.\n * @param {IArrayLike<T>} arr Array or array like object over\n *     which to iterate whose elements will be the values in the new object.\n * @param {?function(this:S, T, number, ?) : string} keyFunc The function to\n *     call for every element. This function takes 3 arguments (the element, the\n *     index and the array) and should return a string that will be used as the\n *     key for the element in the new object. If the function returns the same\n *     key for more than one element, the value for that key is\n *     implementation-defined.\n * @param {S=} opt_obj The object to be used as the value of 'this'\n *     within keyFunc.\n * @return {!Object<T>} The new object.\n * @template T,S\n */\nfunction toObject(arr, keyFunc, opt_obj) {\n  var ret = {};\n  forEach(arr, function(element, index) {\n    ret[keyFunc.call(/** @type {?} */ (opt_obj), element, index, arr)] =\n        element;\n  });\n  return ret;\n}\nexports.toObject = toObject;\n\n\n/**\n * Creates a range of numbers in an arithmetic progression.\n *\n * Range takes 1, 2, or 3 arguments:\n * <pre>\n * range(5) is the same as range(0, 5, 1) and produces [0, 1, 2, 3, 4]\n * range(2, 5) is the same as range(2, 5, 1) and produces [2, 3, 4]\n * range(-2, -5, -1) produces [-2, -3, -4]\n * range(-2, -5, 1) produces [], since stepping by 1 wouldn't ever reach -5.\n * </pre>\n *\n * @param {number} startOrEnd The starting value of the range if an end argument\n *     is provided. Otherwise, the start value is 0, and this is the end value.\n * @param {number=} opt_end The optional end value of the range.\n * @param {number=} opt_step The step size between range values. Defaults to 1\n *     if opt_step is undefined or 0.\n * @return {!Array<number>} An array of numbers for the requested range. May be\n *     an empty array if adding the step would not converge toward the end\n *     value.\n */\nfunction range(startOrEnd, opt_end, opt_step) {\n  var array = [];\n  var start = 0;\n  var end = startOrEnd;\n  var step = opt_step || 1;\n  if (opt_end !== undefined) {\n    start = startOrEnd;\n    end = opt_end;\n  }\n\n  if (step * (end - start) < 0) {\n    // Sign mismatch: start + step will never reach the end value.\n    return [];\n  }\n\n  if (step > 0) {\n    for (var i = start; i < end; i += step) {\n      array.push(i);\n    }\n  } else {\n    for (var i = start; i > end; i += step) {\n      array.push(i);\n    }\n  }\n  return array;\n}\nexports.range = range;\n\n\n/**\n * Returns an array consisting of the given value repeated N times.\n *\n * @param {VALUE} value The value to repeat.\n * @param {number} n The repeat count.\n * @return {!Array<VALUE>} An array with the repeated value.\n * @template VALUE\n */\nfunction repeat(value, n) {\n  var array = [];\n  for (var i = 0; i < n; i++) {\n    array[i] = value;\n  }\n  return array;\n}\nexports.repeat = repeat;\n\n\n/**\n * Returns an array consisting of every argument with all arrays\n * expanded in-place recursively.\n *\n * @param {...*} var_args The values to flatten.\n * @return {!Array<?>} An array containing the flattened values.\n */\nfunction flatten(var_args) {\n  var CHUNK_SIZE = 8192;\n\n  var result = [];\n  for (var i = 0; i < arguments.length; i++) {\n    var element = arguments[i];\n    if (Array.isArray(element)) {\n      for (var c = 0; c < element.length; c += CHUNK_SIZE) {\n        var chunk = slice(element, c, c + CHUNK_SIZE);\n        var recurseResult = flatten.apply(null, chunk);\n        for (var r = 0; r < recurseResult.length; r++) {\n          result.push(recurseResult[r]);\n        }\n      }\n    } else {\n      result.push(element);\n    }\n  }\n  return result;\n}\nexports.flatten = flatten;\n\n\n/**\n * Rotates an array in-place. After calling this method, the element at\n * index i will be the element previously at index (i - n) %\n * array.length, for all values of i between 0 and array.length - 1,\n * inclusive.\n *\n * For example, suppose list comprises [t, a, n, k, s]. After invoking\n * rotate(array, 1) (or rotate(array, -4)), array will comprise [s, t, a, n, k].\n *\n * @param {!Array<T>} array The array to rotate.\n * @param {number} n The amount to rotate.\n * @return {!Array<T>} The array.\n * @template T\n */\nfunction rotate(array, n) {\n  asserts.assert(array.length != null);\n\n  if (array.length) {\n    n %= array.length;\n    if (n > 0) {\n      Array.prototype.unshift.apply(array, array.splice(-n, n));\n    } else if (n < 0) {\n      Array.prototype.push.apply(array, array.splice(0, -n));\n    }\n  }\n  return array;\n}\nexports.rotate = rotate;\n\n\n/**\n * Moves one item of an array to a new position keeping the order of the rest\n * of the items. Example use case: keeping a list of JavaScript objects\n * synchronized with the corresponding list of DOM elements after one of the\n * elements has been dragged to a new position.\n * @param {!IArrayLike<?>} arr The array to modify.\n * @param {number} fromIndex Index of the item to move between 0 and\n *     `arr.length - 1`.\n * @param {number} toIndex Target index between 0 and `arr.length - 1`.\n */\nfunction moveItem(arr, fromIndex, toIndex) {\n  asserts.assert(fromIndex >= 0 && fromIndex < arr.length);\n  asserts.assert(toIndex >= 0 && toIndex < arr.length);\n  // Remove 1 item at fromIndex.\n  var removedItems = Array.prototype.splice.call(arr, fromIndex, 1);\n  // Insert the removed item at toIndex.\n  Array.prototype.splice.call(arr, toIndex, 0, removedItems[0]);\n  // We don't use goog.array.insertAt and goog.array.removeAt, because they're\n  // significantly slower than splice.\n}\nexports.moveItem = moveItem;\n\n\n/**\n * Creates a new array for which the element at position i is an array of the\n * ith element of the provided arrays.  The returned array will only be as long\n * as the shortest array provided; additional values are ignored.  For example,\n * the result of zipping [1, 2] and [3, 4, 5] is [[1,3], [2, 4]].\n *\n * This is similar to the zip() function in Python.  See {@link\n * http://docs.python.org/library/functions.html#zip}\n *\n * @param {...!IArrayLike<?>} var_args Arrays to be combined.\n * @return {!Array<!Array<?>>} A new array of arrays created from\n *     provided arrays.\n */\nfunction zip(var_args) {\n  if (!arguments.length) {\n    return [];\n  }\n  var result = [];\n  var minLen = arguments[0].length;\n  for (var i = 1; i < arguments.length; i++) {\n    if (arguments[i].length < minLen) {\n      minLen = arguments[i].length;\n    }\n  }\n  for (var i = 0; i < minLen; i++) {\n    var value = [];\n    for (var j = 0; j < arguments.length; j++) {\n      value.push(arguments[j][i]);\n    }\n    result.push(value);\n  }\n  return result;\n}\nexports.zip = zip;\n\n\n/**\n * Shuffles the values in the specified array using the Fisher-Yates in-place\n * shuffle (also known as the Knuth Shuffle). By default, calls Math.random()\n * and so resets the state of that random number generator. Similarly, may reset\n * the state of any other specified random number generator.\n *\n * Runtime: O(n)\n *\n * @param {!Array<?>} arr The array to be shuffled.\n * @param {function():number=} opt_randFn Optional random function to use for\n *     shuffling.\n *     Takes no arguments, and returns a random number on the interval [0, 1).\n *     Defaults to Math.random() using JavaScript's built-in Math library.\n */\nfunction shuffle(arr, opt_randFn) {\n  var randFn = opt_randFn || Math.random;\n\n  for (var i = arr.length - 1; i > 0; i--) {\n    // Choose a random array index in [0, i] (inclusive with i).\n    var j = Math.floor(randFn() * (i + 1));\n\n    var tmp = arr[i];\n    arr[i] = arr[j];\n    arr[j] = tmp;\n  }\n}\nexports.shuffle = shuffle;\n\n\n/**\n * Returns a new array of elements from arr, based on the indexes of elements\n * provided by index_arr. For example, the result of index copying\n * ['a', 'b', 'c'] with index_arr [1,0,0,2] is ['b', 'a', 'a', 'c'].\n *\n * @param {!IArrayLike<T>} arr The array to get a indexed copy from.\n * @param {!IArrayLike<number>} index_arr An array of indexes to get from arr.\n * @return {!Array<T>} A new array of elements from arr in index_arr order.\n * @template T\n */\nfunction copyByIndex(arr, index_arr) {\n  var result = [];\n  forEach(index_arr, function(index) {\n    result.push(arr[index]);\n  });\n  return result;\n}\nexports.copyByIndex = copyByIndex;\n\n\n/**\n * Maps each element of the input array into zero or more elements of the output\n * array.\n *\n * @param {!IArrayLike<VALUE>|string} arr Array or array like object\n *     over which to iterate.\n * @param {function(this:THIS, VALUE, number, ?): !Array<RESULT>} f The function\n *     to call for every element. This function takes 3 arguments (the element,\n *     the index and the array) and should return an array. The result will be\n *     used to extend a new array.\n * @param {THIS=} opt_obj The object to be used as the value of 'this' within f.\n * @return {!Array<RESULT>} a new array with the concatenation of all arrays\n *     returned from f.\n * @template THIS, VALUE, RESULT\n */\nfunction concatMap(arr, f, opt_obj) {\n  return concat.apply([], map(arr, f, opt_obj));\n}\nexports.concatMap = concatMap;\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview String functions called from Closure packages that couldn't\n * depend on each other. Outside Closure, use goog.string function which\n * delegate to these.\n */\n\n\ngoog.provide('goog.string.internal');\n\n\n/**\n * Fast prefix-checker.\n * @param {string} str The string to check.\n * @param {string} prefix A string to look for at the start of `str`.\n * @return {boolean} True if `str` begins with `prefix`.\n * @see goog.string.startsWith\n */\ngoog.string.internal.startsWith = function(str, prefix) {\n  'use strict';\n  return str.lastIndexOf(prefix, 0) == 0;\n};\n\n\n/**\n * Fast suffix-checker.\n * @param {string} str The string to check.\n * @param {string} suffix A string to look for at the end of `str`.\n * @return {boolean} True if `str` ends with `suffix`.\n * @see goog.string.endsWith\n */\ngoog.string.internal.endsWith = function(str, suffix) {\n  'use strict';\n  const l = str.length - suffix.length;\n  return l >= 0 && str.indexOf(suffix, l) == l;\n};\n\n\n/**\n * Case-insensitive prefix-checker.\n * @param {string} str The string to check.\n * @param {string} prefix  A string to look for at the end of `str`.\n * @return {boolean} True if `str` begins with `prefix` (ignoring\n *     case).\n * @see goog.string.caseInsensitiveStartsWith\n */\ngoog.string.internal.caseInsensitiveStartsWith = function(str, prefix) {\n  'use strict';\n  return goog.string.internal.caseInsensitiveCompare(\n             prefix, str.substr(0, prefix.length)) == 0;\n};\n\n\n/**\n * Case-insensitive suffix-checker.\n * @param {string} str The string to check.\n * @param {string} suffix A string to look for at the end of `str`.\n * @return {boolean} True if `str` ends with `suffix` (ignoring\n *     case).\n * @see goog.string.caseInsensitiveEndsWith\n */\ngoog.string.internal.caseInsensitiveEndsWith = function(str, suffix) {\n  'use strict';\n  return (\n      goog.string.internal.caseInsensitiveCompare(\n          suffix, str.substr(str.length - suffix.length, suffix.length)) == 0);\n};\n\n\n/**\n * Case-insensitive equality checker.\n * @param {string} str1 First string to check.\n * @param {string} str2 Second string to check.\n * @return {boolean} True if `str1` and `str2` are the same string,\n *     ignoring case.\n * @see goog.string.caseInsensitiveEquals\n */\ngoog.string.internal.caseInsensitiveEquals = function(str1, str2) {\n  'use strict';\n  return str1.toLowerCase() == str2.toLowerCase();\n};\n\n\n/**\n * Checks if a string is empty or contains only whitespaces.\n * @param {string} str The string to check.\n * @return {boolean} Whether `str` is empty or whitespace only.\n * @see goog.string.isEmptyOrWhitespace\n */\ngoog.string.internal.isEmptyOrWhitespace = function(str) {\n  'use strict';\n  // testing length == 0 first is actually slower in all browsers (about the\n  // same in Opera).\n  // Since IE doesn't include non-breaking-space (0xa0) in their \\s character\n  // class (as required by section 7.2 of the ECMAScript spec), we explicitly\n  // include it in the regexp to enforce consistent cross-browser behavior.\n  return /^[\\s\\xa0]*$/.test(str);\n};\n\n\n/**\n * Trims white spaces to the left and right of a string.\n * @param {string} str The string to trim.\n * @return {string} A trimmed copy of `str`.\n */\ngoog.string.internal.trim =\n    (goog.TRUSTED_SITE && String.prototype.trim) ? function(str) {\n      'use strict';\n      return str.trim();\n    } : function(str) {\n      'use strict';\n      // Since IE doesn't include non-breaking-space (0xa0) in their \\s\n      // character class (as required by section 7.2 of the ECMAScript spec),\n      // we explicitly include it in the regexp to enforce consistent\n      // cross-browser behavior.\n      // NOTE: We don't use String#replace because it might have side effects\n      // causing this function to not compile to 0 bytes.\n      return /^[\\s\\xa0]*([\\s\\S]*?)[\\s\\xa0]*$/.exec(str)[1];\n    };\n\n\n/**\n * A string comparator that ignores case.\n * -1 = str1 less than str2\n *  0 = str1 equals str2\n *  1 = str1 greater than str2\n *\n * @param {string} str1 The string to compare.\n * @param {string} str2 The string to compare `str1` to.\n * @return {number} The comparator result, as described above.\n * @see goog.string.caseInsensitiveCompare\n */\ngoog.string.internal.caseInsensitiveCompare = function(str1, str2) {\n  'use strict';\n  const test1 = String(str1).toLowerCase();\n  const test2 = String(str2).toLowerCase();\n\n  if (test1 < test2) {\n    return -1;\n  } else if (test1 == test2) {\n    return 0;\n  } else {\n    return 1;\n  }\n};\n\n\n/**\n * Converts \\n to <br>s or <br />s.\n * @param {string} str The string in which to convert newlines.\n * @param {boolean=} opt_xml Whether to use XML compatible tags.\n * @return {string} A copy of `str` with converted newlines.\n * @see goog.string.newLineToBr\n */\ngoog.string.internal.newLineToBr = function(str, opt_xml) {\n  'use strict';\n  return str.replace(/(\\r\\n|\\r|\\n)/g, opt_xml ? '<br />' : '<br>');\n};\n\n\n/**\n * Escapes double quote '\"' and single quote '\\'' characters in addition to\n * '&', '<', and '>' so that a string can be included in an HTML tag attribute\n * value within double or single quotes.\n * @param {string} str string to be escaped.\n * @param {boolean=} opt_isLikelyToContainHtmlChars\n * @return {string} An escaped copy of `str`.\n * @see goog.string.htmlEscape\n */\ngoog.string.internal.htmlEscape = function(\n    str, opt_isLikelyToContainHtmlChars) {\n  'use strict';\n  if (opt_isLikelyToContainHtmlChars) {\n    str = str.replace(goog.string.internal.AMP_RE_, '&amp;')\n              .replace(goog.string.internal.LT_RE_, '&lt;')\n              .replace(goog.string.internal.GT_RE_, '&gt;')\n              .replace(goog.string.internal.QUOT_RE_, '&quot;')\n              .replace(goog.string.internal.SINGLE_QUOTE_RE_, '&#39;')\n              .replace(goog.string.internal.NULL_RE_, '&#0;');\n    return str;\n\n  } else {\n    // quick test helps in the case when there are no chars to replace, in\n    // worst case this makes barely a difference to the time taken\n    if (!goog.string.internal.ALL_RE_.test(str)) return str;\n\n    // str.indexOf is faster than regex.test in this case\n    if (str.indexOf('&') != -1) {\n      str = str.replace(goog.string.internal.AMP_RE_, '&amp;');\n    }\n    if (str.indexOf('<') != -1) {\n      str = str.replace(goog.string.internal.LT_RE_, '&lt;');\n    }\n    if (str.indexOf('>') != -1) {\n      str = str.replace(goog.string.internal.GT_RE_, '&gt;');\n    }\n    if (str.indexOf('\"') != -1) {\n      str = str.replace(goog.string.internal.QUOT_RE_, '&quot;');\n    }\n    if (str.indexOf('\\'') != -1) {\n      str = str.replace(goog.string.internal.SINGLE_QUOTE_RE_, '&#39;');\n    }\n    if (str.indexOf('\\x00') != -1) {\n      str = str.replace(goog.string.internal.NULL_RE_, '&#0;');\n    }\n    return str;\n  }\n};\n\n\n/**\n * Regular expression that matches an ampersand, for use in escaping.\n * @const {!RegExp}\n * @private\n */\ngoog.string.internal.AMP_RE_ = /&/g;\n\n\n/**\n * Regular expression that matches a less than sign, for use in escaping.\n * @const {!RegExp}\n * @private\n */\ngoog.string.internal.LT_RE_ = /</g;\n\n\n/**\n * Regular expression that matches a greater than sign, for use in escaping.\n * @const {!RegExp}\n * @private\n */\ngoog.string.internal.GT_RE_ = />/g;\n\n\n/**\n * Regular expression that matches a double quote, for use in escaping.\n * @const {!RegExp}\n * @private\n */\ngoog.string.internal.QUOT_RE_ = /\"/g;\n\n\n/**\n * Regular expression that matches a single quote, for use in escaping.\n * @const {!RegExp}\n * @private\n */\ngoog.string.internal.SINGLE_QUOTE_RE_ = /'/g;\n\n\n/**\n * Regular expression that matches null character, for use in escaping.\n * @const {!RegExp}\n * @private\n */\ngoog.string.internal.NULL_RE_ = /\\x00/g;\n\n\n/**\n * Regular expression that matches any character that needs to be escaped.\n * @const {!RegExp}\n * @private\n */\ngoog.string.internal.ALL_RE_ = /[\\x00&<>\"']/;\n\n\n/**\n * Do escaping of whitespace to preserve spatial formatting. We use character\n * entity #160 to make it safer for xml.\n * @param {string} str The string in which to escape whitespace.\n * @param {boolean=} opt_xml Whether to use XML compatible tags.\n * @return {string} An escaped copy of `str`.\n * @see goog.string.whitespaceEscape\n */\ngoog.string.internal.whitespaceEscape = function(str, opt_xml) {\n  'use strict';\n  // This doesn't use goog.string.preserveSpaces for backwards compatibility.\n  return goog.string.internal.newLineToBr(\n      str.replace(/  /g, ' &#160;'), opt_xml);\n};\n\n\n/**\n * Determines whether a string contains a substring.\n * @param {string} str The string to search.\n * @param {string} subString The substring to search for.\n * @return {boolean} Whether `str` contains `subString`.\n * @see goog.string.contains\n */\ngoog.string.internal.contains = function(str, subString) {\n  'use strict';\n  return str.indexOf(subString) != -1;\n};\n\n\n/**\n * Determines whether a string contains a substring, ignoring case.\n * @param {string} str The string to search.\n * @param {string} subString The substring to search for.\n * @return {boolean} Whether `str` contains `subString`.\n * @see goog.string.caseInsensitiveContains\n */\ngoog.string.internal.caseInsensitiveContains = function(str, subString) {\n  'use strict';\n  return goog.string.internal.contains(\n      str.toLowerCase(), subString.toLowerCase());\n};\n\n\n/**\n * Compares two version numbers.\n *\n * @param {string|number} version1 Version of first item.\n * @param {string|number} version2 Version of second item.\n *\n * @return {number}  1 if `version1` is higher.\n *                   0 if arguments are equal.\n *                  -1 if `version2` is higher.\n * @see goog.string.compareVersions\n */\ngoog.string.internal.compareVersions = function(version1, version2) {\n  'use strict';\n  let order = 0;\n  // Trim leading and trailing whitespace and split the versions into\n  // subversions.\n  const v1Subs = goog.string.internal.trim(String(version1)).split('.');\n  const v2Subs = goog.string.internal.trim(String(version2)).split('.');\n  const subCount = Math.max(v1Subs.length, v2Subs.length);\n\n  // Iterate over the subversions, as long as they appear to be equivalent.\n  for (let subIdx = 0; order == 0 && subIdx < subCount; subIdx++) {\n    let v1Sub = v1Subs[subIdx] || '';\n    let v2Sub = v2Subs[subIdx] || '';\n\n    do {\n      // Split the subversions into pairs of numbers and qualifiers (like 'b').\n      // Two different RegExp objects are use to make it clear the code\n      // is side-effect free\n      const v1Comp = /(\\d*)(\\D*)(.*)/.exec(v1Sub) || ['', '', '', ''];\n      const v2Comp = /(\\d*)(\\D*)(.*)/.exec(v2Sub) || ['', '', '', ''];\n      // Break if there are no more matches.\n      if (v1Comp[0].length == 0 && v2Comp[0].length == 0) {\n        break;\n      }\n\n      // Parse the numeric part of the subversion. A missing number is\n      // equivalent to 0.\n      const v1CompNum = v1Comp[1].length == 0 ? 0 : parseInt(v1Comp[1], 10);\n      const v2CompNum = v2Comp[1].length == 0 ? 0 : parseInt(v2Comp[1], 10);\n\n      // Compare the subversion components. The number has the highest\n      // precedence. Next, if the numbers are equal, a subversion without any\n      // qualifier is always higher than a subversion with any qualifier. Next,\n      // the qualifiers are compared as strings.\n      order = goog.string.internal.compareElements_(v1CompNum, v2CompNum) ||\n          goog.string.internal.compareElements_(\n              v1Comp[2].length == 0, v2Comp[2].length == 0) ||\n          goog.string.internal.compareElements_(v1Comp[2], v2Comp[2]);\n      // Stop as soon as an inequality is discovered.\n\n      v1Sub = v1Comp[3];\n      v2Sub = v2Comp[3];\n    } while (order == 0);\n  }\n\n  return order;\n};\n\n\n/**\n * Compares elements of a version number.\n *\n * @param {string|number|boolean} left An element from a version number.\n * @param {string|number|boolean} right An element from a version number.\n *\n * @return {number}  1 if `left` is higher.\n *                   0 if arguments are equal.\n *                  -1 if `right` is higher.\n * @private\n */\ngoog.string.internal.compareElements_ = function(left, right) {\n  'use strict';\n  if (left < right) {\n    return -1;\n  } else if (left > right) {\n    return 1;\n  }\n  return 0;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Utilities used by goog.labs.userAgent tools. These functions\n * should not be used outside of goog.labs.userAgent.*.\n *\n */\n\ngoog.provide('goog.labs.userAgent.util');\n\ngoog.require('goog.string.internal');\n\n\n/**\n * Gets the native userAgent string from navigator if it exists.\n * If navigator or navigator.userAgent string is missing, returns an empty\n * string.\n * @return {string}\n * @private\n */\ngoog.labs.userAgent.util.getNativeUserAgentString_ = function() {\n  'use strict';\n  var navigator = goog.labs.userAgent.util.getNavigator_();\n  if (navigator) {\n    var userAgent = navigator.userAgent;\n    if (userAgent) {\n      return userAgent;\n    }\n  }\n  return '';\n};\n\n\n/**\n * Getter for the native navigator.\n * This is a separate function so it can be stubbed out in testing.\n * @return {!Navigator}\n * @private\n */\ngoog.labs.userAgent.util.getNavigator_ = function() {\n  'use strict';\n  return goog.global.navigator;\n};\n\n\n/**\n * A possible override for applications which wish to not check\n * navigator.userAgent but use a specified value for detection instead.\n * @private {string}\n */\ngoog.labs.userAgent.util.userAgent_ =\n    goog.labs.userAgent.util.getNativeUserAgentString_();\n\n\n/**\n * Applications may override browser detection on the built in\n * navigator.userAgent object by setting this string. Set to null to use the\n * browser object instead.\n * @param {?string=} opt_userAgent The User-Agent override.\n */\ngoog.labs.userAgent.util.setUserAgent = function(opt_userAgent) {\n  'use strict';\n  goog.labs.userAgent.util.userAgent_ =\n      opt_userAgent || goog.labs.userAgent.util.getNativeUserAgentString_();\n};\n\n\n/**\n * @return {string} The user agent string.\n */\ngoog.labs.userAgent.util.getUserAgent = function() {\n  'use strict';\n  return goog.labs.userAgent.util.userAgent_;\n};\n\n\n/**\n * @param {string} str\n * @return {boolean} Whether the user agent contains the given string.\n */\ngoog.labs.userAgent.util.matchUserAgent = function(str) {\n  'use strict';\n  var userAgent = goog.labs.userAgent.util.getUserAgent();\n  return goog.string.internal.contains(userAgent, str);\n};\n\n\n/**\n * @param {string} str\n * @return {boolean} Whether the user agent contains the given string, ignoring\n *     case.\n */\ngoog.labs.userAgent.util.matchUserAgentIgnoreCase = function(str) {\n  'use strict';\n  var userAgent = goog.labs.userAgent.util.getUserAgent();\n  return goog.string.internal.caseInsensitiveContains(userAgent, str);\n};\n\n\n/**\n * Parses the user agent into tuples for each section.\n * @param {string} userAgent\n * @return {!Array<!Array<string>>} Tuples of key, version, and the contents\n *     of the parenthetical.\n */\ngoog.labs.userAgent.util.extractVersionTuples = function(userAgent) {\n  'use strict';\n  // Matches each section of a user agent string.\n  // Example UA:\n  // Mozilla/5.0 (iPad; U; CPU OS 3_2_1 like Mac OS X; en-us)\n  // AppleWebKit/531.21.10 (KHTML, like Gecko) Mobile/7B405\n  // This has three version tuples: Mozilla, AppleWebKit, and Mobile.\n\n  var versionRegExp = new RegExp(\n      // Key. Note that a key may have a space.\n      // (i.e. 'Mobile Safari' in 'Mobile Safari/5.0')\n      '(\\\\w[\\\\w ]+)' +\n\n          '/' +                // slash\n          '([^\\\\s]+)' +        // version (i.e. '5.0b')\n          '\\\\s*' +             // whitespace\n          '(?:\\\\((.*?)\\\\))?',  // parenthetical info. parentheses not matched.\n      'g');\n\n  var data = [];\n  var match;\n\n  // Iterate and collect the version tuples.  Each iteration will be the\n  // next regex match.\n  while (match = versionRegExp.exec(userAgent)) {\n    data.push([\n      match[1],  // key\n      match[2],  // value\n      // || undefined as this is not undefined in IE7 and IE8\n      match[3] || undefined  // info\n    ]);\n  }\n\n  return data;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Utilities for manipulating objects/maps/hashes.\n */\n\ngoog.provide('goog.object');\n\n\n/**\n * Calls a function for each element in an object/map/hash.\n *\n * @param {Object<K,V>} obj The object over which to iterate.\n * @param {function(this:T,V,?,Object<K,V>):?} f The function to call\n *     for every element. This function takes 3 arguments (the value, the\n *     key and the object) and the return value is ignored.\n * @param {T=} opt_obj This is used as the 'this' object within f.\n * @template T,K,V\n */\ngoog.object.forEach = function(obj, f, opt_obj) {\n  'use strict';\n  for (const key in obj) {\n    f.call(/** @type {?} */ (opt_obj), obj[key], key, obj);\n  }\n};\n\n\n/**\n * Calls a function for each element in an object/map/hash. If that call returns\n * true, adds the element to a new object.\n *\n * @param {Object<K,V>} obj The object over which to iterate.\n * @param {function(this:T,V,?,Object<K,V>):boolean} f The function to call\n *     for every element. This\n *     function takes 3 arguments (the value, the key and the object)\n *     and should return a boolean. If the return value is true the\n *     element is added to the result object. If it is false the\n *     element is not included.\n * @param {T=} opt_obj This is used as the 'this' object within f.\n * @return {!Object<K,V>} a new object in which only elements that passed the\n *     test are present.\n * @template T,K,V\n */\ngoog.object.filter = function(obj, f, opt_obj) {\n  'use strict';\n  const res = {};\n  for (const key in obj) {\n    if (f.call(/** @type {?} */ (opt_obj), obj[key], key, obj)) {\n      res[key] = obj[key];\n    }\n  }\n  return res;\n};\n\n\n/**\n * For every element in an object/map/hash calls a function and inserts the\n * result into a new object.\n *\n * @param {Object<K,V>} obj The object over which to iterate.\n * @param {function(this:T,V,?,Object<K,V>):R} f The function to call\n *     for every element. This function\n *     takes 3 arguments (the value, the key and the object)\n *     and should return something. The result will be inserted\n *     into a new object.\n * @param {T=} opt_obj This is used as the 'this' object within f.\n * @return {!Object<K,R>} a new object with the results from f.\n * @template T,K,V,R\n */\ngoog.object.map = function(obj, f, opt_obj) {\n  'use strict';\n  const res = {};\n  for (const key in obj) {\n    res[key] = f.call(/** @type {?} */ (opt_obj), obj[key], key, obj);\n  }\n  return res;\n};\n\n\n/**\n * Calls a function for each element in an object/map/hash. If any\n * call returns true, returns true (without checking the rest). If\n * all calls return false, returns false.\n *\n * @param {Object<K,V>} obj The object to check.\n * @param {function(this:T,V,?,Object<K,V>):boolean} f The function to\n *     call for every element. This function\n *     takes 3 arguments (the value, the key and the object) and should\n *     return a boolean.\n * @param {T=} opt_obj This is used as the 'this' object within f.\n * @return {boolean} true if any element passes the test.\n * @template T,K,V\n */\ngoog.object.some = function(obj, f, opt_obj) {\n  'use strict';\n  for (const key in obj) {\n    if (f.call(/** @type {?} */ (opt_obj), obj[key], key, obj)) {\n      return true;\n    }\n  }\n  return false;\n};\n\n\n/**\n * Calls a function for each element in an object/map/hash. If\n * all calls return true, returns true. If any call returns false, returns\n * false at this point and does not continue to check the remaining elements.\n *\n * @param {Object<K,V>} obj The object to check.\n * @param {?function(this:T,V,?,Object<K,V>):boolean} f The function to\n *     call for every element. This function\n *     takes 3 arguments (the value, the key and the object) and should\n *     return a boolean.\n * @param {T=} opt_obj This is used as the 'this' object within f.\n * @return {boolean} false if any element fails the test.\n * @template T,K,V\n */\ngoog.object.every = function(obj, f, opt_obj) {\n  'use strict';\n  for (const key in obj) {\n    if (!f.call(/** @type {?} */ (opt_obj), obj[key], key, obj)) {\n      return false;\n    }\n  }\n  return true;\n};\n\n\n/**\n * Returns the number of key-value pairs in the object map.\n *\n * @param {Object} obj The object for which to get the number of key-value\n *     pairs.\n * @return {number} The number of key-value pairs in the object map.\n */\ngoog.object.getCount = function(obj) {\n  'use strict';\n  let rv = 0;\n  for (const key in obj) {\n    rv++;\n  }\n  return rv;\n};\n\n\n/**\n * Returns one key from the object map, if any exists.\n * For map literals the returned key will be the first one in most of the\n * browsers (a know exception is Konqueror).\n *\n * @param {Object} obj The object to pick a key from.\n * @return {string|undefined} The key or undefined if the object is empty.\n */\ngoog.object.getAnyKey = function(obj) {\n  'use strict';\n  for (const key in obj) {\n    return key;\n  }\n};\n\n\n/**\n * Returns one value from the object map, if any exists.\n * For map literals the returned value will be the first one in most of the\n * browsers (a know exception is Konqueror).\n *\n * @param {Object<K,V>} obj The object to pick a value from.\n * @return {V|undefined} The value or undefined if the object is empty.\n * @template K,V\n */\ngoog.object.getAnyValue = function(obj) {\n  'use strict';\n  for (const key in obj) {\n    return obj[key];\n  }\n};\n\n\n/**\n * Whether the object/hash/map contains the given object as a value.\n * An alias for goog.object.containsValue(obj, val).\n *\n * @param {Object<K,V>} obj The object in which to look for val.\n * @param {V} val The object for which to check.\n * @return {boolean} true if val is present.\n * @template K,V\n */\ngoog.object.contains = function(obj, val) {\n  'use strict';\n  return goog.object.containsValue(obj, val);\n};\n\n\n/**\n * Returns the values of the object/map/hash.\n *\n * @param {Object<K,V>} obj The object from which to get the values.\n * @return {!Array<V>} The values in the object/map/hash.\n * @template K,V\n */\ngoog.object.getValues = function(obj) {\n  'use strict';\n  const res = [];\n  let i = 0;\n  for (const key in obj) {\n    res[i++] = obj[key];\n  }\n  return res;\n};\n\n\n/**\n * Returns the keys of the object/map/hash.\n *\n * @param {Object} obj The object from which to get the keys.\n * @return {!Array<string>} Array of property keys.\n */\ngoog.object.getKeys = function(obj) {\n  'use strict';\n  const res = [];\n  let i = 0;\n  for (const key in obj) {\n    res[i++] = key;\n  }\n  return res;\n};\n\n\n/**\n * Get a value from an object multiple levels deep.  This is useful for\n * pulling values from deeply nested objects, such as JSON responses.\n * Example usage: getValueByKeys(jsonObj, 'foo', 'entries', 3)\n *\n * @param {!Object} obj An object to get the value from.  Can be array-like.\n * @param {...(string|number|!IArrayLike<number|string>)}\n *     var_args A number of keys\n *     (as strings, or numbers, for array-like objects).  Can also be\n *     specified as a single array of keys.\n * @return {*} The resulting value.  If, at any point, the value for a key\n *     in the current object is null or undefined, returns undefined.\n */\ngoog.object.getValueByKeys = function(obj, var_args) {\n  'use strict';\n  const isArrayLike = goog.isArrayLike(var_args);\n  const keys = isArrayLike ?\n      /** @type {!IArrayLike<number|string>} */ (var_args) :\n      arguments;\n\n  // Start with the 2nd parameter for the variable parameters syntax.\n  for (let i = isArrayLike ? 0 : 1; i < keys.length; i++) {\n    if (obj == null) return undefined;\n    obj = obj[keys[i]];\n  }\n\n  return obj;\n};\n\n\n/**\n * Whether the object/map/hash contains the given key.\n *\n * @param {Object} obj The object in which to look for key.\n * @param {?} key The key for which to check.\n * @return {boolean} true If the map contains the key.\n */\ngoog.object.containsKey = function(obj, key) {\n  'use strict';\n  return obj !== null && key in obj;\n};\n\n\n/**\n * Whether the object/map/hash contains the given value. This is O(n).\n *\n * @param {Object<K,V>} obj The object in which to look for val.\n * @param {V} val The value for which to check.\n * @return {boolean} true If the map contains the value.\n * @template K,V\n */\ngoog.object.containsValue = function(obj, val) {\n  'use strict';\n  for (const key in obj) {\n    if (obj[key] == val) {\n      return true;\n    }\n  }\n  return false;\n};\n\n\n/**\n * Searches an object for an element that satisfies the given condition and\n * returns its key.\n * @param {Object<K,V>} obj The object to search in.\n * @param {function(this:T,V,string,Object<K,V>):boolean} f The\n *      function to call for every element. Takes 3 arguments (the value,\n *     the key and the object) and should return a boolean.\n * @param {T=} opt_this An optional \"this\" context for the function.\n * @return {string|undefined} The key of an element for which the function\n *     returns true or undefined if no such element is found.\n * @template T,K,V\n */\ngoog.object.findKey = function(obj, f, opt_this) {\n  'use strict';\n  for (const key in obj) {\n    if (f.call(/** @type {?} */ (opt_this), obj[key], key, obj)) {\n      return key;\n    }\n  }\n  return undefined;\n};\n\n\n/**\n * Searches an object for an element that satisfies the given condition and\n * returns its value.\n * @param {Object<K,V>} obj The object to search in.\n * @param {function(this:T,V,string,Object<K,V>):boolean} f The function\n *     to call for every element. Takes 3 arguments (the value, the key\n *     and the object) and should return a boolean.\n * @param {T=} opt_this An optional \"this\" context for the function.\n * @return {V} The value of an element for which the function returns true or\n *     undefined if no such element is found.\n * @template T,K,V\n */\ngoog.object.findValue = function(obj, f, opt_this) {\n  'use strict';\n  const key = goog.object.findKey(obj, f, opt_this);\n  return key && obj[key];\n};\n\n\n/**\n * Whether the object/map/hash is empty.\n *\n * @param {Object} obj The object to test.\n * @return {boolean} true if obj is empty.\n */\ngoog.object.isEmpty = function(obj) {\n  'use strict';\n  for (const key in obj) {\n    return false;\n  }\n  return true;\n};\n\n\n/**\n * Removes all key value pairs from the object/map/hash.\n *\n * @param {Object} obj The object to clear.\n */\ngoog.object.clear = function(obj) {\n  'use strict';\n  for (const i in obj) {\n    delete obj[i];\n  }\n};\n\n\n/**\n * Removes a key-value pair based on the key.\n *\n * @param {Object} obj The object from which to remove the key.\n * @param {?} key The key to remove.\n * @return {boolean} Whether an element was removed.\n */\ngoog.object.remove = function(obj, key) {\n  'use strict';\n  let rv;\n  if (rv = key in /** @type {!Object} */ (obj)) {\n    delete obj[key];\n  }\n  return rv;\n};\n\n\n/**\n * Adds a key-value pair to the object. Throws an exception if the key is\n * already in use. Use set if you want to change an existing pair.\n *\n * @param {Object<K,V>} obj The object to which to add the key-value pair.\n * @param {string} key The key to add.\n * @param {V} val The value to add.\n * @template K,V\n */\ngoog.object.add = function(obj, key, val) {\n  'use strict';\n  if (obj !== null && key in obj) {\n    throw new Error('The object already contains the key \"' + key + '\"');\n  }\n  goog.object.set(obj, key, val);\n};\n\n\n/**\n * Returns the value for the given key.\n *\n * @param {Object<K,V>} obj The object from which to get the value.\n * @param {string} key The key for which to get the value.\n * @param {R=} opt_val The value to return if no item is found for the given\n *     key (default is undefined).\n * @return {V|R|undefined} The value for the given key.\n * @template K,V,R\n */\ngoog.object.get = function(obj, key, opt_val) {\n  'use strict';\n  if (obj !== null && key in obj) {\n    return obj[key];\n  }\n  return opt_val;\n};\n\n\n/**\n * Adds a key-value pair to the object/map/hash.\n *\n * @param {Object<K,V>} obj The object to which to add the key-value pair.\n * @param {string} key The key to add.\n * @param {V} value The value to add.\n * @template K,V\n */\ngoog.object.set = function(obj, key, value) {\n  'use strict';\n  obj[key] = value;\n};\n\n\n/**\n * Adds a key-value pair to the object/map/hash if it doesn't exist yet.\n *\n * @param {Object<K,V>} obj The object to which to add the key-value pair.\n * @param {string} key The key to add.\n * @param {V} value The value to add if the key wasn't present.\n * @return {V} The value of the entry at the end of the function.\n * @template K,V\n */\ngoog.object.setIfUndefined = function(obj, key, value) {\n  'use strict';\n  return key in /** @type {!Object} */ (obj) ? obj[key] : (obj[key] = value);\n};\n\n\n/**\n * Sets a key and value to an object if the key is not set. The value will be\n * the return value of the given function. If the key already exists, the\n * object will not be changed and the function will not be called (the function\n * will be lazily evaluated -- only called if necessary).\n *\n * This function is particularly useful when used with an `Object` which is\n * acting as a cache.\n *\n * @param {!Object<K,V>} obj The object to which to add the key-value pair.\n * @param {string} key The key to add.\n * @param {function():V} f The value to add if the key wasn't present.\n * @return {V} The value of the entry at the end of the function.\n * @template K,V\n */\ngoog.object.setWithReturnValueIfNotSet = function(obj, key, f) {\n  'use strict';\n  if (key in obj) {\n    return obj[key];\n  }\n\n  const val = f();\n  obj[key] = val;\n  return val;\n};\n\n\n/**\n * Compares two objects for equality using === on the values.\n *\n * @param {!Object<K,V>} a\n * @param {!Object<K,V>} b\n * @return {boolean}\n * @template K,V\n */\ngoog.object.equals = function(a, b) {\n  'use strict';\n  for (const k in a) {\n    if (!(k in b) || a[k] !== b[k]) {\n      return false;\n    }\n  }\n  for (const k in b) {\n    if (!(k in a)) {\n      return false;\n    }\n  }\n  return true;\n};\n\n\n/**\n * Returns a shallow clone of the object.\n *\n * @param {Object<K,V>} obj Object to clone.\n * @return {!Object<K,V>} Clone of the input object.\n * @template K,V\n */\ngoog.object.clone = function(obj) {\n  'use strict';\n  const res = {};\n  for (const key in obj) {\n    res[key] = obj[key];\n  }\n  return res;\n};\n\n\n/**\n * Clones a value. The input may be an Object, Array, or basic type. Objects and\n * arrays will be cloned recursively.\n *\n * WARNINGS:\n * <code>goog.object.unsafeClone</code> does not detect reference loops. Objects\n * that refer to themselves will cause infinite recursion.\n *\n * <code>goog.object.unsafeClone</code> is unaware of unique identifiers, and\n * copies UIDs created by <code>getUid</code> into cloned results.\n *\n * @param {T} obj The value to clone.\n * @return {T} A clone of the input value.\n * @template T\n */\ngoog.object.unsafeClone = function(obj) {\n  'use strict';\n  if (!obj || typeof obj !== 'object') return obj;\n  if (typeof obj.clone === 'function') return obj.clone();\n  const clone = Array.isArray(obj) ? [] :\n      typeof ArrayBuffer === 'function' &&\n          typeof ArrayBuffer.isView === 'function' && ArrayBuffer.isView(obj) &&\n          !(obj instanceof DataView) ?\n                                     new obj.constructor(obj.length) :\n                                     {};\n  for (const key in obj) {\n    clone[key] = goog.object.unsafeClone(obj[key]);\n  }\n  return clone;\n};\n\n\n/**\n * Returns a new object in which all the keys and values are interchanged\n * (keys become values and values become keys). If multiple keys map to the\n * same value, the chosen transposed value is implementation-dependent.\n *\n * @param {Object} obj The object to transpose.\n * @return {!Object} The transposed object.\n */\ngoog.object.transpose = function(obj) {\n  'use strict';\n  const transposed = {};\n  for (const key in obj) {\n    transposed[obj[key]] = key;\n  }\n  return transposed;\n};\n\n\n/**\n * The names of the fields that are defined on Object.prototype.\n * @type {Array<string>}\n * @private\n */\ngoog.object.PROTOTYPE_FIELDS_ = [\n  'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable',\n  'toLocaleString', 'toString', 'valueOf'\n];\n\n\n/**\n * Extends an object with another object.\n * This operates 'in-place'; it does not create a new Object.\n *\n * Example:\n * var o = {};\n * goog.object.extend(o, {a: 0, b: 1});\n * o; // {a: 0, b: 1}\n * goog.object.extend(o, {b: 2, c: 3});\n * o; // {a: 0, b: 2, c: 3}\n *\n * @param {Object} target The object to modify. Existing properties will be\n *     overwritten if they are also present in one of the objects in\n *     `var_args`.\n * @param {...(Object|null|undefined)} var_args The objects from which values\n *     will be copied.\n * @deprecated Prefer Object.assign\n */\ngoog.object.extend = function(target, var_args) {\n  'use strict';\n  let key;\n  let source;\n  for (let i = 1; i < arguments.length; i++) {\n    source = arguments[i];\n    for (key in source) {\n      target[key] = source[key];\n    }\n\n    // For IE the for-in-loop does not contain any properties that are not\n    // enumerable on the prototype object (for example isPrototypeOf from\n    // Object.prototype) and it will also not include 'replace' on objects that\n    // extend String and change 'replace' (not that it is common for anyone to\n    // extend anything except Object).\n\n    for (let j = 0; j < goog.object.PROTOTYPE_FIELDS_.length; j++) {\n      key = goog.object.PROTOTYPE_FIELDS_[j];\n      if (Object.prototype.hasOwnProperty.call(source, key)) {\n        target[key] = source[key];\n      }\n    }\n  }\n};\n\n\n/**\n * Creates a new object built from the key-value pairs provided as arguments.\n * @param {...*} var_args If only one argument is provided and it is an array\n *     then this is used as the arguments, otherwise even arguments are used as\n *     the property names and odd arguments are used as the property values.\n * @return {!Object} The new object.\n * @throws {Error} If there are uneven number of arguments or there is only one\n *     non array argument.\n */\ngoog.object.create = function(var_args) {\n  'use strict';\n  const argLength = arguments.length;\n  if (argLength == 1 && Array.isArray(arguments[0])) {\n    return goog.object.create.apply(null, arguments[0]);\n  }\n\n  if (argLength % 2) {\n    throw new Error('Uneven number of arguments');\n  }\n\n  const rv = {};\n  for (let i = 0; i < argLength; i += 2) {\n    rv[arguments[i]] = arguments[i + 1];\n  }\n  return rv;\n};\n\n\n/**\n * Creates a new object where the property names come from the arguments but\n * the value is always set to true\n * @param {...*} var_args If only one argument is provided and it is an array\n *     then this is used as the arguments, otherwise the arguments are used\n *     as the property names.\n * @return {!Object} The new object.\n */\ngoog.object.createSet = function(var_args) {\n  'use strict';\n  const argLength = arguments.length;\n  if (argLength == 1 && Array.isArray(arguments[0])) {\n    return goog.object.createSet.apply(null, arguments[0]);\n  }\n\n  const rv = {};\n  for (let i = 0; i < argLength; i++) {\n    rv[arguments[i]] = true;\n  }\n  return rv;\n};\n\n\n/**\n * Creates an immutable view of the underlying object, if the browser\n * supports immutable objects.\n *\n * In default mode, writes to this view will fail silently. In strict mode,\n * they will throw an error.\n *\n * @param {!Object<K,V>} obj An object.\n * @return {!Object<K,V>} An immutable view of that object, or the\n *     original object if this browser does not support immutables.\n * @template K,V\n */\ngoog.object.createImmutableView = function(obj) {\n  'use strict';\n  let result = obj;\n  if (Object.isFrozen && !Object.isFrozen(obj)) {\n    result = Object.create(obj);\n    Object.freeze(result);\n  }\n  return result;\n};\n\n\n/**\n * @param {!Object} obj An object.\n * @return {boolean} Whether this is an immutable view of the object.\n */\ngoog.object.isImmutableView = function(obj) {\n  'use strict';\n  return !!Object.isFrozen && Object.isFrozen(obj);\n};\n\n\n/**\n * Get all properties names on a given Object regardless of enumerability.\n *\n * <p> If the browser does not support `Object.getOwnPropertyNames` nor\n * `Object.getPrototypeOf` then this is equivalent to using\n * `goog.object.getKeys`\n *\n * @param {?Object} obj The object to get the properties of.\n * @param {boolean=} opt_includeObjectPrototype Whether properties defined on\n *     `Object.prototype` should be included in the result.\n * @param {boolean=} opt_includeFunctionPrototype Whether properties defined on\n *     `Function.prototype` should be included in the result.\n * @return {!Array<string>}\n * @public\n */\ngoog.object.getAllPropertyNames = function(\n    obj, opt_includeObjectPrototype, opt_includeFunctionPrototype) {\n  'use strict';\n  if (!obj) {\n    return [];\n  }\n\n  // Naively use a for..in loop to get the property names if the browser doesn't\n  // support any other APIs for getting it.\n  if (!Object.getOwnPropertyNames || !Object.getPrototypeOf) {\n    return goog.object.getKeys(obj);\n  }\n\n  const visitedSet = {};\n\n  // Traverse the prototype chain and add all properties to the visited set.\n  let proto = obj;\n  while (proto &&\n         (proto !== Object.prototype || !!opt_includeObjectPrototype) &&\n         (proto !== Function.prototype || !!opt_includeFunctionPrototype)) {\n    const names = Object.getOwnPropertyNames(proto);\n    for (let i = 0; i < names.length; i++) {\n      visitedSet[names[i]] = true;\n    }\n    proto = Object.getPrototypeOf(proto);\n  }\n\n  return goog.object.getKeys(visitedSet);\n};\n\n\n/**\n * Given a ES5 or ES6 class reference, return its super class / super\n * constructor.\n *\n * This should be used in rare cases where you need to walk up the inheritance\n * tree (this is generally a bad idea). But this work with ES5 and ES6 classes,\n * unlike relying on the superClass_ property.\n *\n * Note: To start walking up the hierarchy from an instance call this with its\n * `constructor` property; e.g. `getSuperClass(instance.constructor)`.\n *\n * @param {function(new: ?)} constructor\n * @return {?Object}\n */\ngoog.object.getSuperClass = function(constructor) {\n  'use strict';\n  var proto = Object.getPrototypeOf(constructor.prototype);\n  return proto && proto.constructor;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Useful compiler idioms.\n */\n\ngoog.provide('goog.reflect');\n\n\n/**\n * Syntax for object literal casts.\n * @see http://go/jscompiler-renaming\n * @see https://goo.gl/CRs09P\n *\n * Use this if you have an object literal whose keys need to have the same names\n * as the properties of some class even after they are renamed by the compiler.\n *\n * @param {!Function} type Type to cast to.\n * @param {Object} object Object literal to cast.\n * @return {Object} The object literal.\n */\ngoog.reflect.object = function(type, object) {\n  'use strict';\n  return object;\n};\n\n/**\n * Syntax for renaming property strings.\n * @see http://go/jscompiler-renaming\n * @see https://goo.gl/CRs09P\n *\n * Use this if you have an need to access a property as a string, but want\n * to also have the property renamed by the compiler. In contrast to\n * goog.reflect.object, this method takes an instance of an object.\n *\n * Properties must be simple names (not qualified names).\n *\n * @param {string} prop Name of the property\n * @param {!Object} object Instance of the object whose type will be used\n *     for renaming\n * @return {string} The renamed property.\n */\ngoog.reflect.objectProperty = function(prop, object) {\n  'use strict';\n  return prop;\n};\n\n/**\n * To assert to the compiler that an operation is needed when it would\n * otherwise be stripped. For example:\n * <code>\n *     // Force a layout\n *     goog.reflect.sinkValue(dialog.offsetHeight);\n * </code>\n * @param {T} x\n * @return {T}\n * @template T\n */\ngoog.reflect.sinkValue = function(x) {\n  'use strict';\n  goog.reflect.sinkValue[' '](x);\n  return x;\n};\n\n\n/**\n * The compiler should optimize this function away iff no one ever uses\n * goog.reflect.sinkValue.\n */\ngoog.reflect.sinkValue[' '] = goog.nullFunction;\n\n\n/**\n * Check if a property can be accessed without throwing an exception.\n * @param {Object} obj The owner of the property.\n * @param {string} prop The property name.\n * @return {boolean} Whether the property is accessible. Will also return true\n *     if obj is null.\n */\ngoog.reflect.canAccessProperty = function(obj, prop) {\n  'use strict';\n  try {\n    goog.reflect.sinkValue(obj[prop]);\n    return true;\n  } catch (e) {\n  }\n  return false;\n};\n\n\n/**\n * Retrieves a value from a cache given a key. The compiler provides special\n * consideration for this call such that it is generally considered side-effect\n * free. However, if the `opt_keyFn` or `valueFn` have side-effects\n * then the entire call is considered to have side-effects.\n *\n * Conventionally storing the value on the cache would be considered a\n * side-effect and preclude unused calls from being pruned, ie. even if\n * the value was never used, it would still always be stored in the cache.\n *\n * Providing a side-effect free `valueFn` and `opt_keyFn`\n * allows unused calls to `goog.reflect.cache` to be pruned.\n *\n * @param {!Object<K, V>} cacheObj The object that contains the cached values.\n * @param {?} key The key to lookup in the cache. If it is not string or number\n *     then a `opt_keyFn` should be provided. The key is also used as the\n *     parameter to the `valueFn`.\n * @param {function(?):V} valueFn The value provider to use to calculate the\n *     value to store in the cache. This function should be side-effect free\n *     to take advantage of the optimization.\n * @param {function(?):K=} opt_keyFn The key provider to determine the cache\n *     map key. This should be used if the given key is not a string or number.\n *     If not provided then the given key is used. This function should be\n *     side-effect free to take advantage of the optimization.\n * @return {V} The cached or calculated value.\n * @template K\n * @template V\n */\ngoog.reflect.cache = function(cacheObj, key, valueFn, opt_keyFn) {\n  'use strict';\n  const storedKey = opt_keyFn ? opt_keyFn(key) : key;\n\n  if (Object.prototype.hasOwnProperty.call(cacheObj, storedKey)) {\n    return cacheObj[storedKey];\n  }\n\n  return (cacheObj[storedKey] = valueFn(key));\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Rendering engine detection.\n * @see <a href=\"http://www.useragentstring.com/\">User agent strings</a>\n * For information on the browser brand (such as Safari versus Chrome), see\n * goog.userAgent.product.\n * @see ../demos/useragent.html\n */\n\ngoog.provide('goog.userAgent');\n\ngoog.require('goog.labs.userAgent.browser');\ngoog.require('goog.labs.userAgent.engine');\ngoog.require('goog.labs.userAgent.platform');\ngoog.require('goog.labs.userAgent.util');\ngoog.require('goog.reflect');\ngoog.require('goog.string');\n\n\n/**\n * @define {boolean} Whether we know at compile-time that the browser is IE.\n */\ngoog.userAgent.ASSUME_IE = goog.define('goog.userAgent.ASSUME_IE', false);\n\n\n/**\n * @define {boolean} Whether we know at compile-time that the browser is EDGE,\n * referring to EdgeHTML based Edge.\n */\ngoog.userAgent.ASSUME_EDGE = goog.define('goog.userAgent.ASSUME_EDGE', false);\n\n\n/**\n * @define {boolean} Whether we know at compile-time that the browser is GECKO.\n */\ngoog.userAgent.ASSUME_GECKO = goog.define('goog.userAgent.ASSUME_GECKO', false);\n\n\n/**\n * @define {boolean} Whether we know at compile-time that the browser is WEBKIT.\n */\ngoog.userAgent.ASSUME_WEBKIT =\n    goog.define('goog.userAgent.ASSUME_WEBKIT', false);\n\n\n/**\n * @define {boolean} Whether we know at compile-time that the browser is a\n *     mobile device running WebKit e.g. iPhone or Android.\n */\ngoog.userAgent.ASSUME_MOBILE_WEBKIT =\n    goog.define('goog.userAgent.ASSUME_MOBILE_WEBKIT', false);\n\n\n/**\n * @define {boolean} Whether we know at compile-time that the browser is OPERA,\n * referring to Presto-based Opera.\n */\ngoog.userAgent.ASSUME_OPERA = goog.define('goog.userAgent.ASSUME_OPERA', false);\n\n\n/**\n * @define {boolean} Whether the\n *     `goog.userAgent.isVersionOrHigher`\n *     function will return true for any version.\n */\ngoog.userAgent.ASSUME_ANY_VERSION =\n    goog.define('goog.userAgent.ASSUME_ANY_VERSION', false);\n\n\n/**\n * Whether we know the browser engine at compile-time.\n * @type {boolean}\n * @private\n */\ngoog.userAgent.BROWSER_KNOWN_ = goog.userAgent.ASSUME_IE ||\n    goog.userAgent.ASSUME_EDGE || goog.userAgent.ASSUME_GECKO ||\n    goog.userAgent.ASSUME_MOBILE_WEBKIT || goog.userAgent.ASSUME_WEBKIT ||\n    goog.userAgent.ASSUME_OPERA;\n\n\n/**\n * Returns the userAgent string for the current browser.\n *\n * @return {string} The userAgent string.\n */\ngoog.userAgent.getUserAgentString = function() {\n  'use strict';\n  return goog.labs.userAgent.util.getUserAgent();\n};\n\n\n/**\n * @return {?Navigator} The native navigator object.\n */\ngoog.userAgent.getNavigatorTyped = function() {\n  'use strict';\n  // Need a local navigator reference instead of using the global one,\n  // to avoid the rare case where they reference different objects.\n  // (in a WorkerPool, for example).\n  return goog.global['navigator'] || null;\n};\n\n\n/**\n * TODO(nnaze): Change type to \"Navigator\" and update compilation targets.\n * @return {?Object} The native navigator object.\n */\ngoog.userAgent.getNavigator = function() {\n  'use strict';\n  return goog.userAgent.getNavigatorTyped();\n};\n\n\n/**\n * Whether the user agent is Presto-based Opera.\n * @type {boolean}\n */\ngoog.userAgent.OPERA = goog.userAgent.BROWSER_KNOWN_ ?\n    goog.userAgent.ASSUME_OPERA :\n    goog.labs.userAgent.browser.isOpera();\n\n\n/**\n * Whether the user agent is Internet Explorer.\n * @type {boolean}\n */\ngoog.userAgent.IE = goog.userAgent.BROWSER_KNOWN_ ?\n    goog.userAgent.ASSUME_IE :\n    goog.labs.userAgent.browser.isIE();\n\n\n/**\n * Whether the user agent is Microsoft Edge (EdgeHTML based).\n * @type {boolean}\n */\ngoog.userAgent.EDGE = goog.userAgent.BROWSER_KNOWN_ ?\n    goog.userAgent.ASSUME_EDGE :\n    goog.labs.userAgent.engine.isEdge();\n\n\n/**\n * Whether the user agent is MS Internet Explorer or MS Edge (EdgeHTML based).\n * @type {boolean}\n */\ngoog.userAgent.EDGE_OR_IE = goog.userAgent.EDGE || goog.userAgent.IE;\n\n\n/**\n * Whether the user agent is Gecko. Gecko is the rendering engine used by\n * Mozilla, Firefox, and others.\n * @type {boolean}\n */\ngoog.userAgent.GECKO = goog.userAgent.BROWSER_KNOWN_ ?\n    goog.userAgent.ASSUME_GECKO :\n    goog.labs.userAgent.engine.isGecko();\n\n\n/**\n * Whether the user agent is WebKit. WebKit is the rendering engine that\n * Safari, Edge Chromium, Opera Chromium, Android and others use.\n * @type {boolean}\n */\ngoog.userAgent.WEBKIT = goog.userAgent.BROWSER_KNOWN_ ?\n    goog.userAgent.ASSUME_WEBKIT || goog.userAgent.ASSUME_MOBILE_WEBKIT :\n    goog.labs.userAgent.engine.isWebKit();\n\n\n/**\n * Whether the user agent is running on a mobile device.\n *\n * This is a separate function so that the logic can be tested.\n *\n * TODO(nnaze): Investigate swapping in goog.labs.userAgent.device.isMobile().\n *\n * @return {boolean} Whether the user agent is running on a mobile device.\n * @private\n */\ngoog.userAgent.isMobile_ = function() {\n  'use strict';\n  return goog.userAgent.WEBKIT &&\n      goog.labs.userAgent.util.matchUserAgent('Mobile');\n};\n\n\n/**\n * Whether the user agent is running on a mobile device.\n *\n * TODO(nnaze): Consider deprecating MOBILE when labs.userAgent\n *   is promoted as the gecko/webkit logic is likely inaccurate.\n *\n * @type {boolean}\n */\ngoog.userAgent.MOBILE =\n    goog.userAgent.ASSUME_MOBILE_WEBKIT || goog.userAgent.isMobile_();\n\n\n/**\n * Used while transitioning code to use WEBKIT instead.\n * @type {boolean}\n * @deprecated Use {@link goog.userAgent.product.SAFARI} instead.\n * TODO(nicksantos): Delete this from goog.userAgent.\n */\ngoog.userAgent.SAFARI = goog.userAgent.WEBKIT;\n\n\n/**\n * @return {string} the platform (operating system) the user agent is running\n *     on. Default to empty string because navigator.platform may not be defined\n *     (on Rhino, for example).\n * @private\n */\ngoog.userAgent.determinePlatform_ = function() {\n  'use strict';\n  var navigator = goog.userAgent.getNavigatorTyped();\n  return navigator && navigator.platform || '';\n};\n\n\n/**\n * The platform (operating system) the user agent is running on. Default to\n * empty string because navigator.platform may not be defined (on Rhino, for\n * example).\n * @type {string}\n */\ngoog.userAgent.PLATFORM = goog.userAgent.determinePlatform_();\n\n\n/**\n * @define {boolean} Whether the user agent is running on a Macintosh operating\n *     system.\n */\ngoog.userAgent.ASSUME_MAC = goog.define('goog.userAgent.ASSUME_MAC', false);\n\n\n/**\n * @define {boolean} Whether the user agent is running on a Windows operating\n *     system.\n */\ngoog.userAgent.ASSUME_WINDOWS =\n    goog.define('goog.userAgent.ASSUME_WINDOWS', false);\n\n\n/**\n * @define {boolean} Whether the user agent is running on a Linux operating\n *     system.\n */\ngoog.userAgent.ASSUME_LINUX = goog.define('goog.userAgent.ASSUME_LINUX', false);\n\n\n/**\n * @define {boolean} Whether the user agent is running on a X11 windowing\n *     system.\n */\ngoog.userAgent.ASSUME_X11 = goog.define('goog.userAgent.ASSUME_X11', false);\n\n\n/**\n * @define {boolean} Whether the user agent is running on Android.\n */\ngoog.userAgent.ASSUME_ANDROID =\n    goog.define('goog.userAgent.ASSUME_ANDROID', false);\n\n\n/**\n * @define {boolean} Whether the user agent is running on an iPhone.\n */\ngoog.userAgent.ASSUME_IPHONE =\n    goog.define('goog.userAgent.ASSUME_IPHONE', false);\n\n\n/**\n * @define {boolean} Whether the user agent is running on an iPad.\n */\ngoog.userAgent.ASSUME_IPAD = goog.define('goog.userAgent.ASSUME_IPAD', false);\n\n\n/**\n * @define {boolean} Whether the user agent is running on an iPod.\n */\ngoog.userAgent.ASSUME_IPOD = goog.define('goog.userAgent.ASSUME_IPOD', false);\n\n\n/**\n * @define {boolean} Whether the user agent is running on KaiOS.\n */\ngoog.userAgent.ASSUME_KAIOS = goog.define('goog.userAgent.ASSUME_KAIOS', false);\n\n\n/**\n * @type {boolean}\n * @private\n */\ngoog.userAgent.PLATFORM_KNOWN_ = goog.userAgent.ASSUME_MAC ||\n    goog.userAgent.ASSUME_WINDOWS || goog.userAgent.ASSUME_LINUX ||\n    goog.userAgent.ASSUME_X11 || goog.userAgent.ASSUME_ANDROID ||\n    goog.userAgent.ASSUME_IPHONE || goog.userAgent.ASSUME_IPAD ||\n    goog.userAgent.ASSUME_IPOD;\n\n\n/**\n * Whether the user agent is running on a Macintosh operating system.\n * @type {boolean}\n */\ngoog.userAgent.MAC = goog.userAgent.PLATFORM_KNOWN_ ?\n    goog.userAgent.ASSUME_MAC :\n    goog.labs.userAgent.platform.isMacintosh();\n\n\n/**\n * Whether the user agent is running on a Windows operating system.\n * @type {boolean}\n */\ngoog.userAgent.WINDOWS = goog.userAgent.PLATFORM_KNOWN_ ?\n    goog.userAgent.ASSUME_WINDOWS :\n    goog.labs.userAgent.platform.isWindows();\n\n\n/**\n * Whether the user agent is Linux per the legacy behavior of\n * goog.userAgent.LINUX, which considered ChromeOS to also be\n * Linux.\n * @return {boolean}\n * @private\n */\ngoog.userAgent.isLegacyLinux_ = function() {\n  'use strict';\n  return goog.labs.userAgent.platform.isLinux() ||\n      goog.labs.userAgent.platform.isChromeOS();\n};\n\n\n/**\n * Whether the user agent is running on a Linux operating system.\n *\n * Note that goog.userAgent.LINUX considers ChromeOS to be Linux,\n * while goog.labs.userAgent.platform considers ChromeOS and\n * Linux to be different OSes.\n *\n * @type {boolean}\n */\ngoog.userAgent.LINUX = goog.userAgent.PLATFORM_KNOWN_ ?\n    goog.userAgent.ASSUME_LINUX :\n    goog.userAgent.isLegacyLinux_();\n\n\n/**\n * @return {boolean} Whether the user agent is an X11 windowing system.\n * @private\n */\ngoog.userAgent.isX11_ = function() {\n  'use strict';\n  var navigator = goog.userAgent.getNavigatorTyped();\n  return !!navigator &&\n      goog.string.contains(navigator['appVersion'] || '', 'X11');\n};\n\n\n/**\n * Whether the user agent is running on a X11 windowing system.\n * @type {boolean}\n */\ngoog.userAgent.X11 = goog.userAgent.PLATFORM_KNOWN_ ?\n    goog.userAgent.ASSUME_X11 :\n    goog.userAgent.isX11_();\n\n\n/**\n * Whether the user agent is running on Android.\n * @type {boolean}\n */\ngoog.userAgent.ANDROID = goog.userAgent.PLATFORM_KNOWN_ ?\n    goog.userAgent.ASSUME_ANDROID :\n    goog.labs.userAgent.platform.isAndroid();\n\n\n/**\n * Whether the user agent is running on an iPhone.\n * @type {boolean}\n */\ngoog.userAgent.IPHONE = goog.userAgent.PLATFORM_KNOWN_ ?\n    goog.userAgent.ASSUME_IPHONE :\n    goog.labs.userAgent.platform.isIphone();\n\n\n/**\n * Whether the user agent is running on an iPad.\n * @type {boolean}\n */\ngoog.userAgent.IPAD = goog.userAgent.PLATFORM_KNOWN_ ?\n    goog.userAgent.ASSUME_IPAD :\n    goog.labs.userAgent.platform.isIpad();\n\n\n/**\n * Whether the user agent is running on an iPod.\n * @type {boolean}\n */\ngoog.userAgent.IPOD = goog.userAgent.PLATFORM_KNOWN_ ?\n    goog.userAgent.ASSUME_IPOD :\n    goog.labs.userAgent.platform.isIpod();\n\n\n/**\n * Whether the user agent is running on iOS.\n * @type {boolean}\n */\ngoog.userAgent.IOS = goog.userAgent.PLATFORM_KNOWN_ ?\n    (goog.userAgent.ASSUME_IPHONE || goog.userAgent.ASSUME_IPAD ||\n     goog.userAgent.ASSUME_IPOD) :\n    goog.labs.userAgent.platform.isIos();\n\n/**\n * Whether the user agent is running on KaiOS.\n * @type {boolean}\n */\ngoog.userAgent.KAIOS = goog.userAgent.PLATFORM_KNOWN_ ?\n    goog.userAgent.ASSUME_KAIOS :\n    goog.labs.userAgent.platform.isKaiOS();\n\n\n/**\n * @return {string} The string that describes the version number of the user\n *     agent.\n * @private\n */\ngoog.userAgent.determineVersion_ = function() {\n  'use strict';\n  // All browsers have different ways to detect the version and they all have\n  // different naming schemes.\n  // version is a string rather than a number because it may contain 'b', 'a',\n  // and so on.\n  var version = '';\n  var arr = goog.userAgent.getVersionRegexResult_();\n  if (arr) {\n    version = arr ? arr[1] : '';\n  }\n\n  if (goog.userAgent.IE) {\n    // IE9 can be in document mode 9 but be reporting an inconsistent user agent\n    // version.  If it is identifying as a version lower than 9 we take the\n    // documentMode as the version instead.  IE8 has similar behavior.\n    // It is recommended to set the X-UA-Compatible header to ensure that IE9\n    // uses documentMode 9.\n    var docMode = goog.userAgent.getDocumentMode_();\n    if (docMode != null && docMode > parseFloat(version)) {\n      return String(docMode);\n    }\n  }\n\n  return version;\n};\n\n\n/**\n * @return {?IArrayLike<string>|undefined} The version regex matches from\n *     parsing the user\n *     agent string. These regex statements must be executed inline so they can\n *     be compiled out by the closure compiler with the rest of the useragent\n *     detection logic when ASSUME_* is specified.\n * @private\n */\ngoog.userAgent.getVersionRegexResult_ = function() {\n  'use strict';\n  var userAgent = goog.userAgent.getUserAgentString();\n  if (goog.userAgent.GECKO) {\n    return /rv\\:([^\\);]+)(\\)|;)/.exec(userAgent);\n  }\n  if (goog.userAgent.EDGE) {\n    return /Edge\\/([\\d\\.]+)/.exec(userAgent);\n  }\n  if (goog.userAgent.IE) {\n    return /\\b(?:MSIE|rv)[: ]([^\\);]+)(\\)|;)/.exec(userAgent);\n  }\n  if (goog.userAgent.WEBKIT) {\n    // WebKit/125.4\n    return /WebKit\\/(\\S+)/.exec(userAgent);\n  }\n  if (goog.userAgent.OPERA) {\n    // If none of the above browsers were detected but the browser is Opera, the\n    // only string that is of interest is 'Version/<number>'.\n    return /(?:Version)[ \\/]?(\\S+)/.exec(userAgent);\n  }\n  return undefined;\n};\n\n\n/**\n * @return {number|undefined} Returns the document mode (for testing).\n * @private\n */\ngoog.userAgent.getDocumentMode_ = function() {\n  'use strict';\n  // NOTE(user): goog.userAgent may be used in context where there is no DOM.\n  var doc = goog.global['document'];\n  return doc ? doc['documentMode'] : undefined;\n};\n\n\n/**\n * The version of the user agent. This is a string because it might contain\n * 'b' (as in beta) as well as multiple dots.\n * @type {string}\n */\ngoog.userAgent.VERSION = goog.userAgent.determineVersion_();\n\n\n/**\n * Compares two version numbers.\n *\n * @param {string} v1 Version of first item.\n * @param {string} v2 Version of second item.\n *\n * @return {number}  1 if first argument is higher\n *                   0 if arguments are equal\n *                  -1 if second argument is higher.\n * @deprecated Use goog.string.compareVersions.\n */\ngoog.userAgent.compare = function(v1, v2) {\n  'use strict';\n  return goog.string.compareVersions(v1, v2);\n};\n\n\n/**\n * Cache for {@link goog.userAgent.isVersionOrHigher}.\n * Calls to compareVersions are surprisingly expensive and, as a browser's\n * version number is unlikely to change during a session, we cache the results.\n * @const\n * @private\n */\ngoog.userAgent.isVersionOrHigherCache_ = {};\n\n\n/**\n * Whether the user agent version is higher or the same as the given version.\n * NOTE: When checking the version numbers for Firefox and Safari, be sure to\n * use the engine's version, not the browser's version number.  For example,\n * Firefox 3.0 corresponds to Gecko 1.9 and Safari 3.0 to Webkit 522.11.\n * Opera and Internet Explorer versions match the product release number.<br>\n * @see <a href=\"http://en.wikipedia.org/wiki/Safari_version_history\">\n *     Webkit</a>\n * @see <a href=\"http://en.wikipedia.org/wiki/Gecko_engine\">Gecko</a>\n *\n * @param {string|number} version The version to check.\n * @return {boolean} Whether the user agent version is higher or the same as\n *     the given version.\n */\ngoog.userAgent.isVersionOrHigher = function(version) {\n  'use strict';\n  return goog.userAgent.ASSUME_ANY_VERSION ||\n      goog.reflect.cache(\n          goog.userAgent.isVersionOrHigherCache_, version, function() {\n            'use strict';\n            return goog.string.compareVersions(\n                       goog.userAgent.VERSION, version) >= 0;\n          });\n};\n\n\n/**\n * Deprecated alias to `goog.userAgent.isVersionOrHigher`.\n * @param {string|number} version The version to check.\n * @return {boolean} Whether the user agent version is higher or the same as\n *     the given version.\n * @deprecated Use goog.userAgent.isVersionOrHigher().\n */\ngoog.userAgent.isVersion = goog.userAgent.isVersionOrHigher;\n\n\n/**\n * Whether the IE effective document mode is higher or the same as the given\n * document mode version.\n * NOTE: Only for IE, return false for another browser.\n *\n * @param {number} documentMode The document mode version to check.\n * @return {boolean} Whether the IE effective document mode is higher or the\n *     same as the given version.\n */\ngoog.userAgent.isDocumentModeOrHigher = function(documentMode) {\n  'use strict';\n  return Number(goog.userAgent.DOCUMENT_MODE) >= documentMode;\n};\n\n\n/**\n * Deprecated alias to `goog.userAgent.isDocumentModeOrHigher`.\n * @param {number} version The version to check.\n * @return {boolean} Whether the IE effective document mode is higher or the\n *      same as the given version.\n * @deprecated Use goog.userAgent.isDocumentModeOrHigher().\n */\ngoog.userAgent.isDocumentMode = goog.userAgent.isDocumentModeOrHigher;\n\n\n/**\n * For IE version < 7, documentMode is undefined, so attempt to use the\n * CSS1Compat property to see if we are in standards mode. If we are in\n * standards mode, treat the browser version as the document mode. Otherwise,\n * IE is emulating version 5.\n *\n * NOTE(user): Support for IE < 7 is long gone, so this is now simplified.\n * It returns document.documentMode for IE and undefined for everything else.\n *\n * @type {number|undefined}\n * @const\n */\ngoog.userAgent.DOCUMENT_MODE = (function() {\n  'use strict';\n  var doc = goog.global['document'];\n  if (!doc || !goog.userAgent.IE) return undefined;\n  // This must be an IE user agent.\n  var documentMode = goog.userAgent.getDocumentMode_();\n  if (documentMode) return documentMode;\n  // The user agent version string begins with the major version.\n  // Parse the major version and truncate anything following.\n  var ieVersion = parseInt(goog.userAgent.VERSION, 10);\n  return ieVersion || undefined;\n})();\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Closure user agent detection (Browser).\n * @see <a href=\"http://www.useragentstring.com/\">User agent strings</a>\n * For more information on rendering engine, platform, or device see the other\n * sub-namespaces in goog.labs.userAgent, goog.labs.userAgent.platform,\n * goog.labs.userAgent.device respectively.)\n */\n\ngoog.provide('goog.labs.userAgent.browser');\n\ngoog.require('goog.array');\ngoog.require('goog.labs.userAgent.util');\ngoog.require('goog.object');\ngoog.require('goog.string.internal');\n\n\n// TODO(nnaze): Refactor to remove excessive exclusion logic in matching\n// functions.\n\n\n/**\n * @return {boolean} Whether the user's browser is Opera.  Note: Chromium\n *     based Opera (Opera 15+) is detected as Chrome to avoid unnecessary\n *     special casing.\n * @private\n */\ngoog.labs.userAgent.browser.matchOpera_ = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Opera');\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is IE.\n * @private\n */\ngoog.labs.userAgent.browser.matchIE_ = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Trident') ||\n      goog.labs.userAgent.util.matchUserAgent('MSIE');\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is Edge. This refers to EdgeHTML\n * based Edge.\n * @private\n */\ngoog.labs.userAgent.browser.matchEdgeHtml_ = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Edge');\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is Chromium based Edge.\n * @private\n */\ngoog.labs.userAgent.browser.matchEdgeChromium_ = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Edg/');\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is Chromium based Opera.\n * @private\n */\ngoog.labs.userAgent.browser.matchOperaChromium_ = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('OPR');\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is Firefox.\n * @private\n */\ngoog.labs.userAgent.browser.matchFirefox_ = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Firefox') ||\n      goog.labs.userAgent.util.matchUserAgent('FxiOS');\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is Safari.\n * @private\n */\ngoog.labs.userAgent.browser.matchSafari_ = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Safari') &&\n      !(goog.labs.userAgent.browser.matchChrome_() ||\n        goog.labs.userAgent.browser.matchCoast_() ||\n        goog.labs.userAgent.browser.matchOpera_() ||\n        goog.labs.userAgent.browser.matchEdgeHtml_() ||\n        goog.labs.userAgent.browser.matchEdgeChromium_() ||\n        goog.labs.userAgent.browser.matchOperaChromium_() ||\n        goog.labs.userAgent.browser.matchFirefox_() ||\n        goog.labs.userAgent.browser.isSilk() ||\n        goog.labs.userAgent.util.matchUserAgent('Android'));\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is Coast (Opera's Webkit-based\n *     iOS browser).\n * @private\n */\ngoog.labs.userAgent.browser.matchCoast_ = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Coast');\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is iOS Webview.\n * @private\n */\ngoog.labs.userAgent.browser.matchIosWebview_ = function() {\n  'use strict';\n  // iOS Webview does not show up as Chrome or Safari. Also check for Opera's\n  // WebKit-based iOS browser, Coast.\n  return (goog.labs.userAgent.util.matchUserAgent('iPad') ||\n          goog.labs.userAgent.util.matchUserAgent('iPhone')) &&\n      !goog.labs.userAgent.browser.matchSafari_() &&\n      !goog.labs.userAgent.browser.matchChrome_() &&\n      !goog.labs.userAgent.browser.matchCoast_() &&\n      !goog.labs.userAgent.browser.matchFirefox_() &&\n      goog.labs.userAgent.util.matchUserAgent('AppleWebKit');\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is any Chromium browser. This\n * returns true for Chrome, Opera 15+, and Edge Chromium.\n * @private\n */\ngoog.labs.userAgent.browser.matchChrome_ = function() {\n  'use strict';\n  return (goog.labs.userAgent.util.matchUserAgent('Chrome') ||\n          goog.labs.userAgent.util.matchUserAgent('CriOS')) &&\n      !goog.labs.userAgent.browser.matchEdgeHtml_();\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is the Android browser.\n * @private\n */\ngoog.labs.userAgent.browser.matchAndroidBrowser_ = function() {\n  'use strict';\n  // Android can appear in the user agent string for Chrome on Android.\n  // This is not the Android standalone browser if it does.\n  return goog.labs.userAgent.util.matchUserAgent('Android') &&\n      !(goog.labs.userAgent.browser.isChrome() ||\n        goog.labs.userAgent.browser.isFirefox() ||\n        goog.labs.userAgent.browser.isOpera() ||\n        goog.labs.userAgent.browser.isSilk());\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is Opera.\n */\ngoog.labs.userAgent.browser.isOpera = goog.labs.userAgent.browser.matchOpera_;\n\n\n/**\n * @return {boolean} Whether the user's browser is IE.\n */\ngoog.labs.userAgent.browser.isIE = goog.labs.userAgent.browser.matchIE_;\n\n\n/**\n * @return {boolean} Whether the user's browser is EdgeHTML based Edge.\n */\ngoog.labs.userAgent.browser.isEdge = goog.labs.userAgent.browser.matchEdgeHtml_;\n\n\n/**\n * @return {boolean} Whether the user's browser is Chromium based Edge.\n */\ngoog.labs.userAgent.browser.isEdgeChromium =\n    goog.labs.userAgent.browser.matchEdgeChromium_;\n\n/**\n * @return {boolean} Whether the user's browser is Chromium based Opera.\n */\ngoog.labs.userAgent.browser.isOperaChromium =\n    goog.labs.userAgent.browser.matchOperaChromium_;\n\n/**\n * @return {boolean} Whether the user's browser is Firefox.\n */\ngoog.labs.userAgent.browser.isFirefox =\n    goog.labs.userAgent.browser.matchFirefox_;\n\n\n/**\n * @return {boolean} Whether the user's browser is Safari.\n */\ngoog.labs.userAgent.browser.isSafari = goog.labs.userAgent.browser.matchSafari_;\n\n\n/**\n * @return {boolean} Whether the user's browser is Coast (Opera's Webkit-based\n *     iOS browser).\n */\ngoog.labs.userAgent.browser.isCoast = goog.labs.userAgent.browser.matchCoast_;\n\n\n/**\n * @return {boolean} Whether the user's browser is iOS Webview.\n */\ngoog.labs.userAgent.browser.isIosWebview =\n    goog.labs.userAgent.browser.matchIosWebview_;\n\n\n/**\n * @return {boolean} Whether the user's browser is any Chromium based browser (\n * Chrome, Blink-based Opera (15+) and Edge Chromium).\n */\ngoog.labs.userAgent.browser.isChrome = goog.labs.userAgent.browser.matchChrome_;\n\n\n/**\n * @return {boolean} Whether the user's browser is the Android browser.\n */\ngoog.labs.userAgent.browser.isAndroidBrowser =\n    goog.labs.userAgent.browser.matchAndroidBrowser_;\n\n\n/**\n * For more information, see:\n * http://docs.aws.amazon.com/silk/latest/developerguide/user-agent.html\n * @return {boolean} Whether the user's browser is Silk.\n */\ngoog.labs.userAgent.browser.isSilk = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Silk');\n};\n\n\n/**\n * @return {string} The browser version or empty string if version cannot be\n *     determined. Note that for Internet Explorer, this returns the version of\n *     the browser, not the version of the rendering engine. (IE 8 in\n *     compatibility mode will return 8.0 rather than 7.0. To determine the\n *     rendering engine version, look at document.documentMode instead. See\n *     http://msdn.microsoft.com/en-us/library/cc196988(v=vs.85).aspx for more\n *     details.)\n */\ngoog.labs.userAgent.browser.getVersion = function() {\n  'use strict';\n  var userAgentString = goog.labs.userAgent.util.getUserAgent();\n  // Special case IE since IE's version is inside the parenthesis and\n  // without the '/'.\n  if (goog.labs.userAgent.browser.isIE()) {\n    return goog.labs.userAgent.browser.getIEVersion_(userAgentString);\n  }\n\n  var versionTuples =\n      goog.labs.userAgent.util.extractVersionTuples(userAgentString);\n\n  // Construct a map for easy lookup.\n  var versionMap = {};\n  goog.array.forEach(versionTuples, function(tuple) {\n    'use strict';\n    // Note that the tuple is of length three, but we only care about the\n    // first two.\n    var key = tuple[0];\n    var value = tuple[1];\n    versionMap[key] = value;\n  });\n\n  var versionMapHasKey = goog.partial(goog.object.containsKey, versionMap);\n\n  // Gives the value with the first key it finds, otherwise empty string.\n  function lookUpValueWithKeys(keys) {\n    var key = goog.array.find(keys, versionMapHasKey);\n    return versionMap[key] || '';\n  }\n\n  // Check Opera before Chrome since Opera 15+ has \"Chrome\" in the string.\n  // See\n  // http://my.opera.com/ODIN/blog/2013/07/15/opera-user-agent-strings-opera-15-and-beyond\n  if (goog.labs.userAgent.browser.isOpera()) {\n    // Opera 10 has Version/10.0 but Opera/9.8, so look for \"Version\" first.\n    // Opera uses 'OPR' for more recent UAs.\n    return lookUpValueWithKeys(['Version', 'Opera']);\n  }\n\n  // Check Edge before Chrome since it has Chrome in the string.\n  if (goog.labs.userAgent.browser.isEdge()) {\n    return lookUpValueWithKeys(['Edge']);\n  }\n\n  // Check Chromium Edge before Chrome since it has Chrome in the string.\n  if (goog.labs.userAgent.browser.isEdgeChromium()) {\n    return lookUpValueWithKeys(['Edg']);\n  }\n\n  if (goog.labs.userAgent.browser.isChrome()) {\n    return lookUpValueWithKeys(['Chrome', 'CriOS', 'HeadlessChrome']);\n  }\n\n  // Usually products browser versions are in the third tuple after \"Mozilla\"\n  // and the engine.\n  var tuple = versionTuples[2];\n  return tuple && tuple[1] || '';\n};\n\n\n/**\n * @param {string|number} version The version to check.\n * @return {boolean} Whether the browser version is higher or the same as the\n *     given version.\n */\ngoog.labs.userAgent.browser.isVersionOrHigher = function(version) {\n  'use strict';\n  return goog.string.internal.compareVersions(\n             goog.labs.userAgent.browser.getVersion(), version) >= 0;\n};\n\n\n/**\n * Determines IE version. More information:\n * http://msdn.microsoft.com/en-us/library/ie/bg182625(v=vs.85).aspx#uaString\n * http://msdn.microsoft.com/en-us/library/hh869301(v=vs.85).aspx\n * http://blogs.msdn.com/b/ie/archive/2010/03/23/introducing-ie9-s-user-agent-string.aspx\n * http://blogs.msdn.com/b/ie/archive/2009/01/09/the-internet-explorer-8-user-agent-string-updated-edition.aspx\n *\n * @param {string} userAgent the User-Agent.\n * @return {string}\n * @private\n */\ngoog.labs.userAgent.browser.getIEVersion_ = function(userAgent) {\n  'use strict';\n  // IE11 may identify itself as MSIE 9.0 or MSIE 10.0 due to an IE 11 upgrade\n  // bug. Example UA:\n  // Mozilla/5.0 (MSIE 9.0; Windows NT 6.1; WOW64; Trident/7.0; rv:11.0)\n  // like Gecko.\n  // See http://www.whatismybrowser.com/developers/unknown-user-agent-fragments.\n  var rv = /rv: *([\\d\\.]*)/.exec(userAgent);\n  if (rv && rv[1]) {\n    return rv[1];\n  }\n\n  var version = '';\n  var msie = /MSIE +([\\d\\.]+)/.exec(userAgent);\n  if (msie && msie[1]) {\n    // IE in compatibility mode usually identifies itself as MSIE 7.0; in this\n    // case, use the Trident version to determine the version of IE. For more\n    // details, see the links above.\n    var tridentVersion = /Trident\\/(\\d.\\d)/.exec(userAgent);\n    if (msie[1] == '7.0') {\n      if (tridentVersion && tridentVersion[1]) {\n        switch (tridentVersion[1]) {\n          case '4.0':\n            version = '8.0';\n            break;\n          case '5.0':\n            version = '9.0';\n            break;\n          case '6.0':\n            version = '10.0';\n            break;\n          case '7.0':\n            version = '11.0';\n            break;\n        }\n      } else {\n        version = '7.0';\n      }\n    } else {\n      version = msie[1];\n    }\n  }\n  return version;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Closure user agent detection.\n * @see http://en.wikipedia.org/wiki/User_agent\n * For more information on browser brand, platform, or device see the other\n * sub-namespaces in goog.labs.userAgent (browser, platform, and device).\n */\n\ngoog.provide('goog.labs.userAgent.engine');\n\ngoog.require('goog.array');\ngoog.require('goog.labs.userAgent.util');\ngoog.require('goog.string');\n\n\n/**\n * @return {boolean} Whether the rendering engine is Presto.\n */\ngoog.labs.userAgent.engine.isPresto = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Presto');\n};\n\n\n/**\n * @return {boolean} Whether the rendering engine is Trident.\n */\ngoog.labs.userAgent.engine.isTrident = function() {\n  'use strict';\n  // IE only started including the Trident token in IE8.\n  return goog.labs.userAgent.util.matchUserAgent('Trident') ||\n      goog.labs.userAgent.util.matchUserAgent('MSIE');\n};\n\n\n/**\n * @return {boolean} Whether the rendering engine is EdgeHTML.\n */\ngoog.labs.userAgent.engine.isEdge = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Edge');\n};\n\n\n/**\n * @return {boolean} Whether the rendering engine is WebKit. This will return\n * true for Chrome, Blink-based Opera (15+), Edge Chromium and Safari.\n */\ngoog.labs.userAgent.engine.isWebKit = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgentIgnoreCase('WebKit') &&\n      !goog.labs.userAgent.engine.isEdge();\n};\n\n\n/**\n * @return {boolean} Whether the rendering engine is Gecko.\n */\ngoog.labs.userAgent.engine.isGecko = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Gecko') &&\n      !goog.labs.userAgent.engine.isWebKit() &&\n      !goog.labs.userAgent.engine.isTrident() &&\n      !goog.labs.userAgent.engine.isEdge();\n};\n\n\n/**\n * @return {string} The rendering engine's version or empty string if version\n *     can't be determined.\n */\ngoog.labs.userAgent.engine.getVersion = function() {\n  'use strict';\n  var userAgentString = goog.labs.userAgent.util.getUserAgent();\n  if (userAgentString) {\n    var tuples = goog.labs.userAgent.util.extractVersionTuples(userAgentString);\n\n    var engineTuple = goog.labs.userAgent.engine.getEngineTuple_(tuples);\n    if (engineTuple) {\n      // In Gecko, the version string is either in the browser info or the\n      // Firefox version.  See Gecko user agent string reference:\n      // http://goo.gl/mULqa\n      if (engineTuple[0] == 'Gecko') {\n        return goog.labs.userAgent.engine.getVersionForKey_(tuples, 'Firefox');\n      }\n\n      return engineTuple[1];\n    }\n\n    // MSIE has only one version identifier, and the Trident version is\n    // specified in the parenthetical. IE Edge is covered in the engine tuple\n    // detection.\n    var browserTuple = tuples[0];\n    var info;\n    if (browserTuple && (info = browserTuple[2])) {\n      var match = /Trident\\/([^\\s;]+)/.exec(info);\n      if (match) {\n        return match[1];\n      }\n    }\n  }\n  return '';\n};\n\n\n/**\n * @param {!Array<!Array<string>>} tuples Extracted version tuples.\n * @return {!Array<string>|undefined} The engine tuple or undefined if not\n *     found.\n * @private\n */\ngoog.labs.userAgent.engine.getEngineTuple_ = function(tuples) {\n  'use strict';\n  if (!goog.labs.userAgent.engine.isEdge()) {\n    return tuples[1];\n  }\n  for (var i = 0; i < tuples.length; i++) {\n    var tuple = tuples[i];\n    if (tuple[0] == 'Edge') {\n      return tuple;\n    }\n  }\n};\n\n\n/**\n * @param {string|number} version The version to check.\n * @return {boolean} Whether the rendering engine version is higher or the same\n *     as the given version.\n */\ngoog.labs.userAgent.engine.isVersionOrHigher = function(version) {\n  'use strict';\n  return goog.string.compareVersions(\n             goog.labs.userAgent.engine.getVersion(), version) >= 0;\n};\n\n\n/**\n * @param {!Array<!Array<string>>} tuples Version tuples.\n * @param {string} key The key to look for.\n * @return {string} The version string of the given key, if present.\n *     Otherwise, the empty string.\n * @private\n */\ngoog.labs.userAgent.engine.getVersionForKey_ = function(tuples, key) {\n  'use strict';\n  // TODO(nnaze): Move to util if useful elsewhere.\n\n  var pair = goog.array.find(tuples, function(pair) {\n    'use strict';\n    return key == pair[0];\n  });\n\n  return pair && pair[1] || '';\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Browser capability checks for the events package.\n */\n\ngoog.module('goog.events.BrowserFeature');\ngoog.module.declareLegacyNamespace();\n\nconst googUserAgent = goog.require('goog.userAgent');\n\n\n/**\n * Tricks Closure Compiler into believing that a function is pure.  The compiler\n * assumes that any `valueOf` function is pure, without analyzing its contents.\n *\n * @param {function(): T} fn\n * @return {T}\n * @template T\n */\nconst purify = (fn) => {\n  return ({valueOf: fn}).valueOf();\n};\n\n\n/**\n * Enum of browser capabilities.\n * @enum {boolean}\n */\nexports = {\n  /**\n   * Whether the button attribute of the event is W3C compliant.  False in\n   * Internet Explorer prior to version 9; document-version dependent.\n   */\n  HAS_W3C_BUTTON: !googUserAgent.IE || googUserAgent.isDocumentModeOrHigher(9),\n\n  /**\n   * Whether the browser supports full W3C event model.\n   */\n  HAS_W3C_EVENT_SUPPORT:\n      !googUserAgent.IE || googUserAgent.isDocumentModeOrHigher(9),\n\n  /**\n   * To prevent default in IE7-8 for certain keydown events we need set the\n   * keyCode to -1.\n   */\n  SET_KEY_CODE_TO_PREVENT_DEFAULT:\n      googUserAgent.IE && !googUserAgent.isVersionOrHigher('9'),\n\n  /**\n   * Whether the `navigator.onLine` property is supported.\n   */\n  HAS_NAVIGATOR_ONLINE_PROPERTY:\n      !googUserAgent.WEBKIT || googUserAgent.isVersionOrHigher('528'),\n\n  /**\n   * Whether HTML5 network online/offline events are supported.\n   */\n  HAS_HTML5_NETWORK_EVENT_SUPPORT:\n      googUserAgent.GECKO && googUserAgent.isVersionOrHigher('1.9b') ||\n      googUserAgent.IE && googUserAgent.isVersionOrHigher('8') ||\n      googUserAgent.OPERA && googUserAgent.isVersionOrHigher('9.5') ||\n      googUserAgent.WEBKIT && googUserAgent.isVersionOrHigher('528'),\n\n  /**\n   * Whether HTML5 network events fire on document.body, or otherwise the\n   * window.\n   */\n  HTML5_NETWORK_EVENTS_FIRE_ON_BODY:\n      googUserAgent.GECKO && !googUserAgent.isVersionOrHigher('8') ||\n      googUserAgent.IE && !googUserAgent.isVersionOrHigher('9'),\n\n  /**\n   * Whether touch is enabled in the browser.\n   */\n  TOUCH_ENABLED:\n      ('ontouchstart' in goog.global ||\n       !!(goog.global['document'] && document.documentElement &&\n          'ontouchstart' in document.documentElement) ||\n       // IE10 uses non-standard touch events, so it has a different check.\n       !!(goog.global['navigator'] &&\n          (goog.global['navigator']['maxTouchPoints'] ||\n           goog.global['navigator']['msMaxTouchPoints']))),\n\n  /**\n   * Whether addEventListener supports W3C standard pointer events.\n   * http://www.w3.org/TR/pointerevents/\n   */\n  POINTER_EVENTS: ('PointerEvent' in goog.global),\n\n  /**\n   * Whether addEventListener supports MSPointer events (only used in IE10).\n   * http://msdn.microsoft.com/en-us/library/ie/hh772103(v=vs.85).aspx\n   * http://msdn.microsoft.com/library/hh673557(v=vs.85).aspx\n   */\n  MSPOINTER_EVENTS:\n      ('MSPointerEvent' in goog.global &&\n       !!(goog.global['navigator'] &&\n          goog.global['navigator']['msPointerEnabled'])),\n\n  /**\n   * Whether addEventListener supports {passive: true}.\n   * https://developers.google.com/web/updates/2016/06/passive-event-listeners\n   */\n  PASSIVE_EVENTS: purify(function() {\n    // If we're in a web worker or other custom environment, we can't tell.\n    if (!goog.global.addEventListener || !Object.defineProperty) {  // IE 8\n      return false;\n    }\n\n    var passive = false;\n    var options = Object.defineProperty({}, 'passive', {\n      get: function() {\n        passive = true;\n      }\n    });\n    try {\n      goog.global.addEventListener('test', goog.nullFunction, options);\n      goog.global.removeEventListener('test', goog.nullFunction, options);\n    } catch (e) {\n    }\n\n    return passive;\n  })\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview A base class for event objects.\n */\n\n\ngoog.provide('goog.events.Event');\ngoog.provide('goog.events.EventLike');\n\n/**\n * goog.events.Event no longer depends on goog.Disposable. Keep requiring\n * goog.Disposable here to not break projects which assume this dependency.\n * @suppress {extraRequire}\n */\ngoog.require('goog.Disposable');\ngoog.require('goog.events.EventId');\n\n\n/**\n * A typedef for event like objects that are dispatchable via the\n * goog.events.dispatchEvent function. strings are treated as the type for a\n * goog.events.Event. Objects are treated as an extension of a new\n * goog.events.Event with the type property of the object being used as the type\n * of the Event.\n * @typedef {string|Object|goog.events.Event|goog.events.EventId}\n */\ngoog.events.EventLike;\n\n\n\n/**\n * A base class for event objects, so that they can support preventDefault and\n * stopPropagation.\n *\n * @param {string|!goog.events.EventId} type Event Type.\n * @param {Object=} opt_target Reference to the object that is the target of\n *     this event. It has to implement the `EventTarget` interface\n *     declared at {@link http://developer.mozilla.org/en/DOM/EventTarget}.\n * @constructor\n */\ngoog.events.Event = function(type, opt_target) {\n  'use strict';\n  /**\n   * Event type.\n   * @type {string}\n   */\n  this.type = type instanceof goog.events.EventId ? String(type) : type;\n\n  /**\n   * TODO(tbreisacher): The type should probably be\n   * EventTarget|goog.events.EventTarget.\n   *\n   * Target of the event.\n   * @type {Object|undefined}\n   */\n  this.target = opt_target;\n\n  /**\n   * Object that had the listener attached.\n   * @type {Object|undefined}\n   */\n  this.currentTarget = this.target;\n\n  /**\n   * Whether to cancel the event in internal capture/bubble processing for IE.\n   * @type {boolean}\n   * @private\n   */\n  this.propagationStopped_ = false;\n\n  /**\n   * Whether the default action has been prevented.\n   * This is a property to match the W3C specification at\n   * {@link http://www.w3.org/TR/DOM-Level-3-Events/\n   * #events-event-type-defaultPrevented}.\n   * Must be treated as read-only outside the class.\n   * @type {boolean}\n   */\n  this.defaultPrevented = false;\n};\n\n/**\n * @return {boolean} true iff internal propagation has been stopped.\n */\ngoog.events.Event.prototype.hasPropagationStopped = function() {\n  'use strict';\n  return this.propagationStopped_;\n};\n\n/**\n * Stops event propagation.\n */\ngoog.events.Event.prototype.stopPropagation = function() {\n  'use strict';\n  this.propagationStopped_ = true;\n};\n\n\n/**\n * Prevents the default action, for example a link redirecting to a url.\n */\ngoog.events.Event.prototype.preventDefault = function() {\n  'use strict';\n  this.defaultPrevented = true;\n};\n\n\n/**\n * Stops the propagation of the event. It is equivalent to\n * `e.stopPropagation()`, but can be used as the callback argument of\n * {@link goog.events.listen} without declaring another function.\n * @param {!goog.events.Event} e An event.\n */\ngoog.events.Event.stopPropagation = function(e) {\n  'use strict';\n  e.stopPropagation();\n};\n\n\n/**\n * Prevents the default action. It is equivalent to\n * `e.preventDefault()`, but can be used as the callback argument of\n * {@link goog.events.listen} without declaring another function.\n * @param {!goog.events.Event} e An event.\n */\ngoog.events.Event.preventDefault = function(e) {\n  'use strict';\n  e.preventDefault();\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview A patched, standardized event object for browser events.\n *\n * <pre>\n * The patched event object contains the following members:\n * - type           {string}    Event type, e.g. 'click'\n * - target         {Object}    The element that actually triggered the event\n * - currentTarget  {Object}    The element the listener is attached to\n * - relatedTarget  {Object}    For mouseover and mouseout, the previous object\n * - offsetX        {number}    X-coordinate relative to target\n * - offsetY        {number}    Y-coordinate relative to target\n * - clientX        {number}    X-coordinate relative to viewport\n * - clientY        {number}    Y-coordinate relative to viewport\n * - screenX        {number}    X-coordinate relative to the edge of the screen\n * - screenY        {number}    Y-coordinate relative to the edge of the screen\n * - button         {number}    Mouse button. Use isButton() to test.\n * - keyCode        {number}    Key-code\n * - ctrlKey        {boolean}   Was ctrl key depressed\n * - altKey         {boolean}   Was alt key depressed\n * - shiftKey       {boolean}   Was shift key depressed\n * - metaKey        {boolean}   Was meta key depressed\n * - pointerId      {number}    Pointer ID\n * - pointerType    {string}    Pointer type, e.g. 'mouse', 'pen', or 'touch'\n * - defaultPrevented {boolean} Whether the default action has been prevented\n * - state          {Object}    History state object\n *\n * NOTE: The keyCode member contains the raw browser keyCode. For normalized\n * key and character code use {@link goog.events.KeyHandler}.\n * </pre>\n */\n\ngoog.provide('goog.events.BrowserEvent');\ngoog.provide('goog.events.BrowserEvent.MouseButton');\ngoog.provide('goog.events.BrowserEvent.PointerType');\n\ngoog.require('goog.debug');\ngoog.require('goog.events.BrowserFeature');\ngoog.require('goog.events.Event');\ngoog.require('goog.events.EventType');\ngoog.require('goog.reflect');\ngoog.require('goog.userAgent');\n\n/**\n * @define {boolean} If true, use the layerX and layerY properties of a native\n * browser event over the offsetX and offsetY properties, which cause expensive\n * reflow. If layerX or layerY is not defined, offsetX and offsetY will be used\n * as usual.\n */\ngoog.events.USE_LAYER_XY_AS_OFFSET_XY =\n    goog.define('goog.events.USE_LAYER_XY_AS_OFFSET_XY', false);\n\n/**\n * Accepts a browser event object and creates a patched, cross browser event\n * object.\n * The content of this object will not be initialized if no event object is\n * provided. If this is the case, init() needs to be invoked separately.\n * @param {Event=} opt_e Browser event object.\n * @param {EventTarget=} opt_currentTarget Current target for event.\n * @constructor\n * @extends {goog.events.Event}\n */\ngoog.events.BrowserEvent = function(opt_e, opt_currentTarget) {\n  'use strict';\n  goog.events.BrowserEvent.base(this, 'constructor', opt_e ? opt_e.type : '');\n\n  /**\n   * Target that fired the event.\n   * @override\n   * @type {?Node}\n   */\n  this.target = null;\n\n  /**\n   * Node that had the listener attached.\n   * @override\n   * @type {?Node|undefined}\n   */\n  this.currentTarget = null;\n\n  /**\n   * For mouseover and mouseout events, the related object for the event.\n   * @type {?Node}\n   */\n  this.relatedTarget = null;\n\n  /**\n   * X-coordinate relative to target.\n   * @type {number}\n   */\n  this.offsetX = 0;\n\n  /**\n   * Y-coordinate relative to target.\n   * @type {number}\n   */\n  this.offsetY = 0;\n\n  /**\n   * X-coordinate relative to the window.\n   * @type {number}\n   */\n  this.clientX = 0;\n\n  /**\n   * Y-coordinate relative to the window.\n   * @type {number}\n   */\n  this.clientY = 0;\n\n  /**\n   * X-coordinate relative to the monitor.\n   * @type {number}\n   */\n  this.screenX = 0;\n\n  /**\n   * Y-coordinate relative to the monitor.\n   * @type {number}\n   */\n  this.screenY = 0;\n\n  /**\n   * Which mouse button was pressed.\n   * @type {number}\n   */\n  this.button = 0;\n\n  /**\n   * Key of key press.\n   * @type {string}\n   */\n  this.key = '';\n\n  /**\n   * Keycode of key press.\n   * @type {number}\n   */\n  this.keyCode = 0;\n\n  /**\n   * Keycode of key press.\n   * @type {number}\n   */\n  this.charCode = 0;\n\n  /**\n   * Whether control was pressed at time of event.\n   * @type {boolean}\n   */\n  this.ctrlKey = false;\n\n  /**\n   * Whether alt was pressed at time of event.\n   * @type {boolean}\n   */\n  this.altKey = false;\n\n  /**\n   * Whether shift was pressed at time of event.\n   * @type {boolean}\n   */\n  this.shiftKey = false;\n\n  /**\n   * Whether the meta key was pressed at time of event.\n   * @type {boolean}\n   */\n  this.metaKey = false;\n\n  /**\n   * History state object, only set for PopState events where it's a copy of the\n   * state object provided to pushState or replaceState.\n   * @type {?Object}\n   */\n  this.state = null;\n\n  /**\n   * Whether the default platform modifier key was pressed at time of event.\n   * (This is control for all platforms except Mac, where it's Meta.)\n   * @type {boolean}\n   */\n  this.platformModifierKey = false;\n\n  /**\n   * @type {number}\n   */\n  this.pointerId = 0;\n\n  /**\n   * @type {string}\n   */\n  this.pointerType = '';\n\n  /**\n   * The browser event object.\n   * @private {?Event}\n   */\n  this.event_ = null;\n\n  if (opt_e) {\n    this.init(opt_e, opt_currentTarget);\n  }\n};\ngoog.inherits(goog.events.BrowserEvent, goog.events.Event);\n\n\n/**\n * Normalized button constants for the mouse.\n * @enum {number}\n */\ngoog.events.BrowserEvent.MouseButton = {\n  LEFT: 0,\n  MIDDLE: 1,\n  RIGHT: 2\n};\n\n\n/**\n * Normalized pointer type constants for pointer events.\n * @enum {string}\n */\ngoog.events.BrowserEvent.PointerType = {\n  MOUSE: 'mouse',\n  PEN: 'pen',\n  TOUCH: 'touch'\n};\n\n\n/**\n * Static data for mapping mouse buttons.\n * @type {!Array<number>}\n * @deprecated Use `goog.events.BrowserEvent.IE_BUTTON_MAP` instead.\n */\ngoog.events.BrowserEvent.IEButtonMap = goog.debug.freeze([\n  1,  // LEFT\n  4,  // MIDDLE\n  2   // RIGHT\n]);\n\n\n/**\n * Static data for mapping mouse buttons.\n * @const {!Array<number>}\n */\ngoog.events.BrowserEvent.IE_BUTTON_MAP = goog.events.BrowserEvent.IEButtonMap;\n\n\n/**\n * Static data for mapping MSPointerEvent types to PointerEvent types.\n * @const {!Object<number, goog.events.BrowserEvent.PointerType>}\n */\ngoog.events.BrowserEvent.IE_POINTER_TYPE_MAP = goog.debug.freeze({\n  2: goog.events.BrowserEvent.PointerType.TOUCH,\n  3: goog.events.BrowserEvent.PointerType.PEN,\n  4: goog.events.BrowserEvent.PointerType.MOUSE\n});\n\n\n/**\n * Accepts a browser event object and creates a patched, cross browser event\n * object.\n * @param {Event} e Browser event object.\n * @param {EventTarget=} opt_currentTarget Current target for event.\n */\ngoog.events.BrowserEvent.prototype.init = function(e, opt_currentTarget) {\n  'use strict';\n  var type = this.type = e.type;\n\n  /**\n   * On touch devices use the first \"changed touch\" as the relevant touch.\n   * @type {?Touch}\n   */\n  var relevantTouch =\n      e.changedTouches && e.changedTouches.length ? e.changedTouches[0] : null;\n\n  // TODO(nicksantos): Change this.target to type EventTarget.\n  this.target = /** @type {Node} */ (e.target) || e.srcElement;\n\n  // TODO(nicksantos): Change this.currentTarget to type EventTarget.\n  this.currentTarget = /** @type {Node} */ (opt_currentTarget);\n\n  var relatedTarget = /** @type {Node} */ (e.relatedTarget);\n  if (relatedTarget) {\n    // There's a bug in FireFox where sometimes, relatedTarget will be a\n    // chrome element, and accessing any property of it will get a permission\n    // denied exception. See:\n    // https://bugzilla.mozilla.org/show_bug.cgi?id=497780\n    if (goog.userAgent.GECKO) {\n      if (!goog.reflect.canAccessProperty(relatedTarget, 'nodeName')) {\n        relatedTarget = null;\n      }\n    }\n  } else if (type == goog.events.EventType.MOUSEOVER) {\n    relatedTarget = e.fromElement;\n  } else if (type == goog.events.EventType.MOUSEOUT) {\n    relatedTarget = e.toElement;\n  }\n\n  this.relatedTarget = relatedTarget;\n\n  if (relevantTouch) {\n    this.clientX = relevantTouch.clientX !== undefined ? relevantTouch.clientX :\n                                                         relevantTouch.pageX;\n    this.clientY = relevantTouch.clientY !== undefined ? relevantTouch.clientY :\n                                                         relevantTouch.pageY;\n    this.screenX = relevantTouch.screenX || 0;\n    this.screenY = relevantTouch.screenY || 0;\n  } else {\n    if (goog.events.USE_LAYER_XY_AS_OFFSET_XY) {\n      this.offsetX = (e.layerX !== undefined) ? e.layerX : e.offsetX;\n      this.offsetY = (e.layerY !== undefined) ? e.layerY : e.offsetY;\n    } else {\n      // Webkit emits a lame warning whenever layerX/layerY is accessed.\n      // http://code.google.com/p/chromium/issues/detail?id=101733\n      this.offsetX = (goog.userAgent.WEBKIT || e.offsetX !== undefined) ?\n          e.offsetX :\n          e.layerX;\n      this.offsetY = (goog.userAgent.WEBKIT || e.offsetY !== undefined) ?\n          e.offsetY :\n          e.layerY;\n    }\n    this.clientX = e.clientX !== undefined ? e.clientX : e.pageX;\n    this.clientY = e.clientY !== undefined ? e.clientY : e.pageY;\n    this.screenX = e.screenX || 0;\n    this.screenY = e.screenY || 0;\n  }\n\n  this.button = e.button;\n\n  this.keyCode = e.keyCode || 0;\n  this.key = e.key || '';\n  this.charCode = e.charCode || (type == 'keypress' ? e.keyCode : 0);\n  this.ctrlKey = e.ctrlKey;\n  this.altKey = e.altKey;\n  this.shiftKey = e.shiftKey;\n  this.metaKey = e.metaKey;\n  this.platformModifierKey = goog.userAgent.MAC ? e.metaKey : e.ctrlKey;\n  this.pointerId = e.pointerId || 0;\n  this.pointerType = goog.events.BrowserEvent.getPointerType_(e);\n  this.state = e.state;\n  this.event_ = e;\n  if (e.defaultPrevented) {\n    this.preventDefault();\n  }\n};\n\n\n/**\n * Tests to see which button was pressed during the event. This is really only\n * useful in IE and Gecko browsers. And in IE, it's only useful for\n * mousedown/mouseup events, because click only fires for the left mouse button.\n *\n * Safari 2 only reports the left button being clicked, and uses the value '1'\n * instead of 0. Opera only reports a mousedown event for the middle button, and\n * no mouse events for the right button. Opera has default behavior for left and\n * middle click that can only be overridden via a configuration setting.\n *\n * There's a nice table of this mess at http://www.unixpapa.com/js/mouse.html.\n *\n * @param {goog.events.BrowserEvent.MouseButton} button The button\n *     to test for.\n * @return {boolean} True if button was pressed.\n */\ngoog.events.BrowserEvent.prototype.isButton = function(button) {\n  'use strict';\n  if (!goog.events.BrowserFeature.HAS_W3C_BUTTON) {\n    if (this.type == 'click') {\n      return button == goog.events.BrowserEvent.MouseButton.LEFT;\n    } else {\n      return !!(\n          this.event_.button & goog.events.BrowserEvent.IE_BUTTON_MAP[button]);\n    }\n  } else {\n    return this.event_.button == button;\n  }\n};\n\n\n/**\n * Whether this has an \"action\"-producing mouse button.\n *\n * By definition, this includes left-click on windows/linux, and left-click\n * without the ctrl key on Macs.\n *\n * @return {boolean} The result.\n */\ngoog.events.BrowserEvent.prototype.isMouseActionButton = function() {\n  'use strict';\n  // Ctrl+click should never behave like a left-click on mac, regardless of\n  // whether or not the browser will actually ever emit such an event.  If\n  // we see it, treat it like right-click always.\n  return this.isButton(goog.events.BrowserEvent.MouseButton.LEFT) &&\n      !(goog.userAgent.MAC && this.ctrlKey);\n};\n\n\n/**\n * @override\n */\ngoog.events.BrowserEvent.prototype.stopPropagation = function() {\n  'use strict';\n  goog.events.BrowserEvent.superClass_.stopPropagation.call(this);\n  if (this.event_.stopPropagation) {\n    this.event_.stopPropagation();\n  } else {\n    this.event_.cancelBubble = true;\n  }\n};\n\n\n/**\n * @override\n */\ngoog.events.BrowserEvent.prototype.preventDefault = function() {\n  'use strict';\n  goog.events.BrowserEvent.superClass_.preventDefault.call(this);\n  var be = this.event_;\n  if (!be.preventDefault) {\n    be.returnValue = false;\n    if (goog.events.BrowserFeature.SET_KEY_CODE_TO_PREVENT_DEFAULT) {\n\n      try {\n        // Most keys can be prevented using returnValue. Some special keys\n        // require setting the keyCode to -1 as well:\n        //\n        // In IE7:\n        // F3, F5, F10, F11, Ctrl+P, Crtl+O, Ctrl+F (these are taken from IE6)\n        //\n        // In IE8:\n        // Ctrl+P, Crtl+O, Ctrl+F (F1-F12 cannot be stopped through the event)\n        //\n        // We therefore do this for all function keys as well as when Ctrl key\n        // is pressed.\n        var VK_F1 = 112;\n        var VK_F12 = 123;\n        if (be.ctrlKey || be.keyCode >= VK_F1 && be.keyCode <= VK_F12) {\n          be.keyCode = -1;\n        }\n      } catch (ex) {\n        // IE throws an 'access denied' exception when trying to change\n        // keyCode in some situations (e.g. srcElement is input[type=file],\n        // or srcElement is an anchor tag rewritten by parent's innerHTML).\n        // Do nothing in this case.\n      }\n    }\n  } else {\n    be.preventDefault();\n  }\n};\n\n\n/**\n * @return {Event} The underlying browser event object.\n */\ngoog.events.BrowserEvent.prototype.getBrowserEvent = function() {\n  'use strict';\n  return this.event_;\n};\n\n\n/**\n * Extracts the pointer type from the given event.\n * @param {!Event} e\n * @return {string} The pointer type, e.g. 'mouse', 'pen', or 'touch'.\n * @private\n */\ngoog.events.BrowserEvent.getPointerType_ = function(e) {\n  'use strict';\n  if (typeof (e.pointerType) === 'string') {\n    return e.pointerType;\n  }\n  // IE10 uses integer codes for pointer type.\n  // https://msdn.microsoft.com/en-us/library/hh772359(v=vs.85).aspx\n  return goog.events.BrowserEvent.IE_POINTER_TYPE_MAP[e.pointerType] || '';\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Event Types.\n */\n\n\ngoog.provide('goog.events.EventType');\ngoog.provide('goog.events.MouseAsMouseEventType');\ngoog.provide('goog.events.MouseEvents');\ngoog.provide('goog.events.PointerAsMouseEventType');\ngoog.provide('goog.events.PointerAsTouchEventType');\ngoog.provide('goog.events.PointerFallbackEventType');\ngoog.provide('goog.events.PointerTouchFallbackEventType');\n\ngoog.require('goog.events.BrowserFeature');\ngoog.require('goog.userAgent');\n\n\n/**\n * Returns a prefixed event name for the current browser.\n * @param {string} eventName The name of the event.\n * @return {string} The prefixed event name.\n * @private\n */\ngoog.events.getVendorPrefixedName_ = function(eventName) {\n  'use strict';\n  return goog.userAgent.WEBKIT ?\n      'webkit' + eventName :\n      (goog.userAgent.OPERA ? 'o' + eventName.toLowerCase() :\n                              eventName.toLowerCase());\n};\n\n\n/**\n * Constants for event names.\n * @enum {string}\n */\ngoog.events.EventType = {\n  // Mouse events\n  CLICK: 'click',\n  RIGHTCLICK: 'rightclick',\n  DBLCLICK: 'dblclick',\n  AUXCLICK: 'auxclick',\n  MOUSEDOWN: 'mousedown',\n  MOUSEUP: 'mouseup',\n  MOUSEOVER: 'mouseover',\n  MOUSEOUT: 'mouseout',\n  MOUSEMOVE: 'mousemove',\n  MOUSEENTER: 'mouseenter',\n  MOUSELEAVE: 'mouseleave',\n\n  // Non-existent event; will never fire. This exists as a mouse counterpart to\n  // POINTERCANCEL.\n  MOUSECANCEL: 'mousecancel',\n\n  // Selection events.\n  // https://www.w3.org/TR/selection-api/\n  SELECTIONCHANGE: 'selectionchange',\n  SELECTSTART: 'selectstart',  // IE, Safari, Chrome\n\n  // Wheel events\n  // http://www.w3.org/TR/DOM-Level-3-Events/#events-wheelevents\n  WHEEL: 'wheel',\n\n  // Key events\n  KEYPRESS: 'keypress',\n  KEYDOWN: 'keydown',\n  KEYUP: 'keyup',\n\n  // Focus\n  BLUR: 'blur',\n  FOCUS: 'focus',\n  DEACTIVATE: 'deactivate',  // IE only\n  FOCUSIN: 'focusin',\n  FOCUSOUT: 'focusout',\n\n  // Forms\n  CHANGE: 'change',\n  RESET: 'reset',\n  SELECT: 'select',\n  SUBMIT: 'submit',\n  INPUT: 'input',\n  PROPERTYCHANGE: 'propertychange',  // IE only\n\n  // Drag and drop\n  DRAGSTART: 'dragstart',\n  DRAG: 'drag',\n  DRAGENTER: 'dragenter',\n  DRAGOVER: 'dragover',\n  DRAGLEAVE: 'dragleave',\n  DROP: 'drop',\n  DRAGEND: 'dragend',\n\n  // Touch events\n  // Note that other touch events exist, but we should follow the W3C list here.\n  // http://www.w3.org/TR/touch-events/#list-of-touchevent-types\n  TOUCHSTART: 'touchstart',\n  TOUCHMOVE: 'touchmove',\n  TOUCHEND: 'touchend',\n  TOUCHCANCEL: 'touchcancel',\n\n  // Misc\n  BEFOREUNLOAD: 'beforeunload',\n  CONSOLEMESSAGE: 'consolemessage',\n  CONTEXTMENU: 'contextmenu',\n  DEVICECHANGE: 'devicechange',\n  DEVICEMOTION: 'devicemotion',\n  DEVICEORIENTATION: 'deviceorientation',\n  DOMCONTENTLOADED: 'DOMContentLoaded',\n  ERROR: 'error',\n  HELP: 'help',\n  LOAD: 'load',\n  LOSECAPTURE: 'losecapture',\n  ORIENTATIONCHANGE: 'orientationchange',\n  READYSTATECHANGE: 'readystatechange',\n  RESIZE: 'resize',\n  SCROLL: 'scroll',\n  UNLOAD: 'unload',\n\n  // Media events\n  CANPLAY: 'canplay',\n  CANPLAYTHROUGH: 'canplaythrough',\n  DURATIONCHANGE: 'durationchange',\n  EMPTIED: 'emptied',\n  ENDED: 'ended',\n  LOADEDDATA: 'loadeddata',\n  LOADEDMETADATA: 'loadedmetadata',\n  PAUSE: 'pause',\n  PLAY: 'play',\n  PLAYING: 'playing',\n  PROGRESS: 'progress',\n  RATECHANGE: 'ratechange',\n  SEEKED: 'seeked',\n  SEEKING: 'seeking',\n  STALLED: 'stalled',\n  SUSPEND: 'suspend',\n  TIMEUPDATE: 'timeupdate',\n  VOLUMECHANGE: 'volumechange',\n  WAITING: 'waiting',\n\n  // Media Source Extensions events\n  // https://www.w3.org/TR/media-source/#mediasource-events\n  SOURCEOPEN: 'sourceopen',\n  SOURCEENDED: 'sourceended',\n  SOURCECLOSED: 'sourceclosed',\n  // https://www.w3.org/TR/media-source/#sourcebuffer-events\n  ABORT: 'abort',\n  UPDATE: 'update',\n  UPDATESTART: 'updatestart',\n  UPDATEEND: 'updateend',\n\n  // HTML 5 History events\n  // See http://www.w3.org/TR/html5/browsers.html#event-definitions-0\n  HASHCHANGE: 'hashchange',\n  PAGEHIDE: 'pagehide',\n  PAGESHOW: 'pageshow',\n  POPSTATE: 'popstate',\n\n  // Copy and Paste\n  // Support is limited. Make sure it works on your favorite browser\n  // before using.\n  // http://www.quirksmode.org/dom/events/cutcopypaste.html\n  COPY: 'copy',\n  PASTE: 'paste',\n  CUT: 'cut',\n  BEFORECOPY: 'beforecopy',\n  BEFORECUT: 'beforecut',\n  BEFOREPASTE: 'beforepaste',\n\n  // HTML5 online/offline events.\n  // http://www.w3.org/TR/offline-webapps/#related\n  ONLINE: 'online',\n  OFFLINE: 'offline',\n\n  // HTML 5 worker events\n  MESSAGE: 'message',\n  CONNECT: 'connect',\n\n  // Service Worker Events - ServiceWorkerGlobalScope context\n  // See https://w3c.github.io/ServiceWorker/#execution-context-events\n  // Note: message event defined in worker events section\n  INSTALL: 'install',\n  ACTIVATE: 'activate',\n  FETCH: 'fetch',\n  FOREIGNFETCH: 'foreignfetch',\n  MESSAGEERROR: 'messageerror',\n\n  // Service Worker Events - Document context\n  // See https://w3c.github.io/ServiceWorker/#document-context-events\n  STATECHANGE: 'statechange',\n  UPDATEFOUND: 'updatefound',\n  CONTROLLERCHANGE: 'controllerchange',\n\n  // CSS animation events.\n  ANIMATIONSTART: goog.events.getVendorPrefixedName_('AnimationStart'),\n  ANIMATIONEND: goog.events.getVendorPrefixedName_('AnimationEnd'),\n  ANIMATIONITERATION: goog.events.getVendorPrefixedName_('AnimationIteration'),\n\n  // CSS transition events. Based on the browser support described at:\n  // https://developer.mozilla.org/en/css/css_transitions#Browser_compatibility\n  TRANSITIONEND: goog.events.getVendorPrefixedName_('TransitionEnd'),\n\n  // W3C Pointer Events\n  // http://www.w3.org/TR/pointerevents/\n  POINTERDOWN: 'pointerdown',\n  POINTERUP: 'pointerup',\n  POINTERCANCEL: 'pointercancel',\n  POINTERMOVE: 'pointermove',\n  POINTEROVER: 'pointerover',\n  POINTEROUT: 'pointerout',\n  POINTERENTER: 'pointerenter',\n  POINTERLEAVE: 'pointerleave',\n  GOTPOINTERCAPTURE: 'gotpointercapture',\n  LOSTPOINTERCAPTURE: 'lostpointercapture',\n\n  // IE specific events.\n  // See http://msdn.microsoft.com/en-us/library/ie/hh772103(v=vs.85).aspx\n  // Note: these events will be supplanted in IE11.\n  MSGESTURECHANGE: 'MSGestureChange',\n  MSGESTUREEND: 'MSGestureEnd',\n  MSGESTUREHOLD: 'MSGestureHold',\n  MSGESTURESTART: 'MSGestureStart',\n  MSGESTURETAP: 'MSGestureTap',\n  MSGOTPOINTERCAPTURE: 'MSGotPointerCapture',\n  MSINERTIASTART: 'MSInertiaStart',\n  MSLOSTPOINTERCAPTURE: 'MSLostPointerCapture',\n  MSPOINTERCANCEL: 'MSPointerCancel',\n  MSPOINTERDOWN: 'MSPointerDown',\n  MSPOINTERENTER: 'MSPointerEnter',\n  MSPOINTERHOVER: 'MSPointerHover',\n  MSPOINTERLEAVE: 'MSPointerLeave',\n  MSPOINTERMOVE: 'MSPointerMove',\n  MSPOINTEROUT: 'MSPointerOut',\n  MSPOINTEROVER: 'MSPointerOver',\n  MSPOINTERUP: 'MSPointerUp',\n\n  // Native IMEs/input tools events.\n  TEXT: 'text',\n  // The textInput event is supported in IE9+, but only in lower case. All other\n  // browsers use the camel-case event name.\n  TEXTINPUT: goog.userAgent.IE ? 'textinput' : 'textInput',\n  COMPOSITIONSTART: 'compositionstart',\n  COMPOSITIONUPDATE: 'compositionupdate',\n  COMPOSITIONEND: 'compositionend',\n\n  // The beforeinput event is initially only supported in Safari. See\n  // https://bugs.chromium.org/p/chromium/issues/detail?id=342670 for Chrome\n  // implementation tracking.\n  BEFOREINPUT: 'beforeinput',\n\n  // Webview tag events\n  // See https://developer.chrome.com/apps/tags/webview\n  EXIT: 'exit',\n  LOADABORT: 'loadabort',\n  LOADCOMMIT: 'loadcommit',\n  LOADREDIRECT: 'loadredirect',\n  LOADSTART: 'loadstart',\n  LOADSTOP: 'loadstop',\n  RESPONSIVE: 'responsive',\n  SIZECHANGED: 'sizechanged',\n  UNRESPONSIVE: 'unresponsive',\n\n  // HTML5 Page Visibility API.  See details at\n  // `goog.labs.dom.PageVisibilityMonitor`.\n  VISIBILITYCHANGE: 'visibilitychange',\n\n  // LocalStorage event.\n  STORAGE: 'storage',\n\n  // DOM Level 2 mutation events (deprecated).\n  DOMSUBTREEMODIFIED: 'DOMSubtreeModified',\n  DOMNODEINSERTED: 'DOMNodeInserted',\n  DOMNODEREMOVED: 'DOMNodeRemoved',\n  DOMNODEREMOVEDFROMDOCUMENT: 'DOMNodeRemovedFromDocument',\n  DOMNODEINSERTEDINTODOCUMENT: 'DOMNodeInsertedIntoDocument',\n  DOMATTRMODIFIED: 'DOMAttrModified',\n  DOMCHARACTERDATAMODIFIED: 'DOMCharacterDataModified',\n\n  // Print events.\n  BEFOREPRINT: 'beforeprint',\n  AFTERPRINT: 'afterprint',\n\n  // Web app manifest events.\n  BEFOREINSTALLPROMPT: 'beforeinstallprompt',\n  APPINSTALLED: 'appinstalled'\n};\n\n\n/**\n * Returns one of the given pointer fallback event names in order of preference:\n *   1. pointerEventName\n *   2. msPointerEventName\n *   3. fallbackEventName\n * @param {string} pointerEventName\n * @param {string} msPointerEventName\n * @param {string} fallbackEventName\n * @return {string} The supported pointer or fallback (mouse or touch) event\n *     name.\n * @private\n */\ngoog.events.getPointerFallbackEventName_ = function(\n    pointerEventName, msPointerEventName, fallbackEventName) {\n  'use strict';\n  if (goog.events.BrowserFeature.POINTER_EVENTS) {\n    return pointerEventName;\n  }\n  if (goog.events.BrowserFeature.MSPOINTER_EVENTS) {\n    return msPointerEventName;\n  }\n  return fallbackEventName;\n};\n\n\n/**\n * Constants for pointer event names that fall back to corresponding mouse event\n * names on unsupported platforms. These are intended to be drop-in replacements\n * for corresponding values in `goog.events.EventType`.\n * @enum {string}\n */\ngoog.events.PointerFallbackEventType = {\n  POINTERDOWN: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERDOWN, goog.events.EventType.MSPOINTERDOWN,\n      goog.events.EventType.MOUSEDOWN),\n  POINTERUP: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERUP, goog.events.EventType.MSPOINTERUP,\n      goog.events.EventType.MOUSEUP),\n  POINTERCANCEL: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERCANCEL,\n      goog.events.EventType.MSPOINTERCANCEL,\n      // When falling back to mouse events, there is no MOUSECANCEL equivalent\n      // of POINTERCANCEL. In this case POINTERUP already falls back to MOUSEUP\n      // which represents both UP and CANCEL. POINTERCANCEL does not fall back\n      // to MOUSEUP to prevent listening twice on the same event.\n      goog.events.EventType.MOUSECANCEL),\n  POINTERMOVE: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERMOVE, goog.events.EventType.MSPOINTERMOVE,\n      goog.events.EventType.MOUSEMOVE),\n  POINTEROVER: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTEROVER, goog.events.EventType.MSPOINTEROVER,\n      goog.events.EventType.MOUSEOVER),\n  POINTEROUT: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTEROUT, goog.events.EventType.MSPOINTEROUT,\n      goog.events.EventType.MOUSEOUT),\n  POINTERENTER: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERENTER, goog.events.EventType.MSPOINTERENTER,\n      goog.events.EventType.MOUSEENTER),\n  POINTERLEAVE: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERLEAVE, goog.events.EventType.MSPOINTERLEAVE,\n      goog.events.EventType.MOUSELEAVE)\n};\n\n\n/**\n * Constants for pointer event names that fall back to corresponding touch event\n * names on unsupported platforms. These are intended to be drop-in replacements\n * for corresponding values in `goog.events.EventType`.\n * @enum {string}\n */\ngoog.events.PointerTouchFallbackEventType = {\n  POINTERDOWN: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERDOWN, goog.events.EventType.MSPOINTERDOWN,\n      goog.events.EventType.TOUCHSTART),\n  POINTERUP: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERUP, goog.events.EventType.MSPOINTERUP,\n      goog.events.EventType.TOUCHEND),\n  POINTERCANCEL: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERCANCEL,\n      goog.events.EventType.MSPOINTERCANCEL, goog.events.EventType.TOUCHCANCEL),\n  POINTERMOVE: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERMOVE, goog.events.EventType.MSPOINTERMOVE,\n      goog.events.EventType.TOUCHMOVE)\n};\n\n\n/**\n * Mapping of mouse event names to underlying browser event names.\n * @typedef {{\n *     MOUSEDOWN: string,\n *     MOUSEUP: string,\n *     MOUSECANCEL:string,\n *     MOUSEMOVE:string,\n *     MOUSEOVER:string,\n *     MOUSEOUT:string,\n *     MOUSEENTER:string,\n *     MOUSELEAVE: string,\n * }}\n */\ngoog.events.MouseEvents;\n\n\n/**\n * An alias for `goog.events.EventType.MOUSE*` event types that is overridden by\n * corresponding `POINTER*` event types.\n * @const {!goog.events.MouseEvents}\n */\ngoog.events.PointerAsMouseEventType = {\n  MOUSEDOWN: goog.events.PointerFallbackEventType.POINTERDOWN,\n  MOUSEUP: goog.events.PointerFallbackEventType.POINTERUP,\n  MOUSECANCEL: goog.events.PointerFallbackEventType.POINTERCANCEL,\n  MOUSEMOVE: goog.events.PointerFallbackEventType.POINTERMOVE,\n  MOUSEOVER: goog.events.PointerFallbackEventType.POINTEROVER,\n  MOUSEOUT: goog.events.PointerFallbackEventType.POINTEROUT,\n  MOUSEENTER: goog.events.PointerFallbackEventType.POINTERENTER,\n  MOUSELEAVE: goog.events.PointerFallbackEventType.POINTERLEAVE\n};\n\n\n/**\n * An alias for `goog.events.EventType.MOUSE*` event types that continue to use\n * mouse events.\n * @const {!goog.events.MouseEvents}\n */\ngoog.events.MouseAsMouseEventType = {\n  MOUSEDOWN: goog.events.EventType.MOUSEDOWN,\n  MOUSEUP: goog.events.EventType.MOUSEUP,\n  MOUSECANCEL: goog.events.EventType.MOUSECANCEL,\n  MOUSEMOVE: goog.events.EventType.MOUSEMOVE,\n  MOUSEOVER: goog.events.EventType.MOUSEOVER,\n  MOUSEOUT: goog.events.EventType.MOUSEOUT,\n  MOUSEENTER: goog.events.EventType.MOUSEENTER,\n  MOUSELEAVE: goog.events.EventType.MOUSELEAVE\n};\n\n\n/**\n * An alias for `goog.events.EventType.TOUCH*` event types that is overridden by\n * corresponding `POINTER*` event types.\n * @enum {string}\n */\ngoog.events.PointerAsTouchEventType = {\n  TOUCHCANCEL: goog.events.PointerTouchFallbackEventType.POINTERCANCEL,\n  TOUCHEND: goog.events.PointerTouchFallbackEventType.POINTERUP,\n  TOUCHMOVE: goog.events.PointerTouchFallbackEventType.POINTERMOVE,\n  TOUCHSTART: goog.events.PointerTouchFallbackEventType.POINTERDOWN\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview An interface for a listenable JavaScript object.\n */\n\ngoog.provide('goog.events.Listenable');\ngoog.provide('goog.events.ListenableKey');\n/** @suppress {extraRequire} */\ngoog.require('goog.events.EventId');\n\ngoog.requireType('goog.events.EventLike');\n\n\n/**\n * A listenable interface. A listenable is an object with the ability\n * to dispatch/broadcast events to \"event listeners\" registered via\n * listen/listenOnce.\n *\n * The interface allows for an event propagation mechanism similar\n * to one offered by native browser event targets, such as\n * capture/bubble mechanism, stopping propagation, and preventing\n * default actions. Capture/bubble mechanism depends on the ancestor\n * tree constructed via `#getParentEventTarget`; this tree\n * must be directed acyclic graph. The meaning of default action(s)\n * in preventDefault is specific to a particular use case.\n *\n * Implementations that do not support capture/bubble or can not have\n * a parent listenable can simply not implement any ability to set the\n * parent listenable (and have `#getParentEventTarget` return\n * null).\n *\n * Implementation of this class can be used with or independently from\n * goog.events.\n *\n * Implementation must call `#addImplementation(implClass)`.\n *\n * @interface\n * @see goog.events\n * @see http://www.w3.org/TR/DOM-Level-2-Events/events.html\n */\ngoog.events.Listenable = function() {};\n\n\n/**\n * An expando property to indicate that an object implements\n * goog.events.Listenable.\n *\n * See addImplementation/isImplementedBy.\n *\n * @type {string}\n * @const\n */\ngoog.events.Listenable.IMPLEMENTED_BY_PROP =\n    'closure_listenable_' + ((Math.random() * 1e6) | 0);\n\n\n/**\n * Marks a given class (constructor) as an implementation of\n * Listenable, so that we can query that fact at runtime. The class\n * must have already implemented the interface.\n * @param {function(new:goog.events.Listenable,...)} cls The class constructor.\n *     The corresponding class must have already implemented the interface.\n */\ngoog.events.Listenable.addImplementation = function(cls) {\n  'use strict';\n  cls.prototype[goog.events.Listenable.IMPLEMENTED_BY_PROP] = true;\n};\n\n\n/**\n * @param {Object} obj The object to check.\n * @return {boolean} Whether a given instance implements Listenable. The\n *     class/superclass of the instance must call addImplementation.\n */\ngoog.events.Listenable.isImplementedBy = function(obj) {\n  'use strict';\n  return !!(obj && obj[goog.events.Listenable.IMPLEMENTED_BY_PROP]);\n};\n\n\n/**\n * Adds an event listener. A listener can only be added once to an\n * object and if it is added again the key for the listener is\n * returned. Note that if the existing listener is a one-off listener\n * (registered via listenOnce), it will no longer be a one-off\n * listener after a call to listen().\n *\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The event type id.\n * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener Callback\n *     method.\n * @param {boolean=} opt_useCapture Whether to fire in capture phase\n *     (defaults to false).\n * @param {SCOPE=} opt_listenerScope Object in whose scope to call the\n *     listener.\n * @return {!goog.events.ListenableKey} Unique key for the listener.\n * @template SCOPE,EVENTOBJ\n */\ngoog.events.Listenable.prototype.listen;\n\n\n/**\n * Adds an event listener that is removed automatically after the\n * listener fired once.\n *\n * If an existing listener already exists, listenOnce will do\n * nothing. In particular, if the listener was previously registered\n * via listen(), listenOnce() will not turn the listener into a\n * one-off listener. Similarly, if there is already an existing\n * one-off listener, listenOnce does not modify the listeners (it is\n * still a once listener).\n *\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The event type id.\n * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener Callback\n *     method.\n * @param {boolean=} opt_useCapture Whether to fire in capture phase\n *     (defaults to false).\n * @param {SCOPE=} opt_listenerScope Object in whose scope to call the\n *     listener.\n * @return {!goog.events.ListenableKey} Unique key for the listener.\n * @template SCOPE,EVENTOBJ\n */\ngoog.events.Listenable.prototype.listenOnce;\n\n\n/**\n * Removes an event listener which was added with listen() or listenOnce().\n *\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The event type id.\n * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener Callback\n *     method.\n * @param {boolean=} opt_useCapture Whether to fire in capture phase\n *     (defaults to false).\n * @param {SCOPE=} opt_listenerScope Object in whose scope to call\n *     the listener.\n * @return {boolean} Whether any listener was removed.\n * @template SCOPE,EVENTOBJ\n */\ngoog.events.Listenable.prototype.unlisten;\n\n\n/**\n * Removes an event listener which was added with listen() by the key\n * returned by listen().\n *\n * @param {!goog.events.ListenableKey} key The key returned by\n *     listen() or listenOnce().\n * @return {boolean} Whether any listener was removed.\n */\ngoog.events.Listenable.prototype.unlistenByKey;\n\n\n/**\n * Dispatches an event (or event like object) and calls all listeners\n * listening for events of this type. The type of the event is decided by the\n * type property on the event object.\n *\n * If any of the listeners returns false OR calls preventDefault then this\n * function will return false.  If one of the capture listeners calls\n * stopPropagation, then the bubble listeners won't fire.\n *\n * @param {goog.events.EventLike} e Event object.\n * @return {boolean} If anyone called preventDefault on the event object (or\n *     if any of the listeners returns false) this will also return false.\n */\ngoog.events.Listenable.prototype.dispatchEvent;\n\n\n/**\n * Removes all listeners from this listenable. If type is specified,\n * it will only remove listeners of the particular type. otherwise all\n * registered listeners will be removed.\n *\n * @param {string|!goog.events.EventId=} opt_type Type of event to remove,\n *     default is to remove all types.\n * @return {number} Number of listeners removed.\n */\ngoog.events.Listenable.prototype.removeAllListeners;\n\n\n/**\n * Returns the parent of this event target to use for capture/bubble\n * mechanism.\n *\n * NOTE(chrishenry): The name reflects the original implementation of\n * custom event target (`goog.events.EventTarget`). We decided\n * that changing the name is not worth it.\n *\n * @return {goog.events.Listenable} The parent EventTarget or null if\n *     there is no parent.\n */\ngoog.events.Listenable.prototype.getParentEventTarget;\n\n\n/**\n * Fires all registered listeners in this listenable for the given\n * type and capture mode, passing them the given eventObject. This\n * does not perform actual capture/bubble. Only implementors of the\n * interface should be using this.\n *\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The type of the\n *     listeners to fire.\n * @param {boolean} capture The capture mode of the listeners to fire.\n * @param {EVENTOBJ} eventObject The event object to fire.\n * @return {boolean} Whether all listeners succeeded without\n *     attempting to prevent default behavior. If any listener returns\n *     false or called goog.events.Event#preventDefault, this returns\n *     false.\n * @template EVENTOBJ\n */\ngoog.events.Listenable.prototype.fireListeners;\n\n\n/**\n * Gets all listeners in this listenable for the given type and\n * capture mode.\n *\n * @param {string|!goog.events.EventId} type The type of the listeners to fire.\n * @param {boolean} capture The capture mode of the listeners to fire.\n * @return {!Array<!goog.events.ListenableKey>} An array of registered\n *     listeners.\n * @template EVENTOBJ\n */\ngoog.events.Listenable.prototype.getListeners;\n\n\n/**\n * Gets the goog.events.ListenableKey for the event or null if no such\n * listener is in use.\n *\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The name of the event\n *     without the 'on' prefix.\n * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener The\n *     listener function to get.\n * @param {boolean} capture Whether the listener is a capturing listener.\n * @param {SCOPE=} opt_listenerScope Object in whose scope to call the\n *     listener.\n * @return {goog.events.ListenableKey} the found listener or null if not found.\n * @template SCOPE,EVENTOBJ\n */\ngoog.events.Listenable.prototype.getListener;\n\n\n/**\n * Whether there is any active listeners matching the specified\n * signature. If either the type or capture parameters are\n * unspecified, the function will match on the remaining criteria.\n *\n * @param {string|!goog.events.EventId<EVENTOBJ>=} opt_type Event type.\n * @param {boolean=} opt_capture Whether to check for capture or bubble\n *     listeners.\n * @return {boolean} Whether there is any active listeners matching\n *     the requested type and/or capture phase.\n * @template EVENTOBJ\n */\ngoog.events.Listenable.prototype.hasListener;\n\n\n\n/**\n * An interface that describes a single registered listener.\n * @interface\n */\ngoog.events.ListenableKey = function() {};\n\n\n/**\n * Counter used to create a unique key\n * @type {number}\n * @private\n */\ngoog.events.ListenableKey.counter_ = 0;\n\n\n/**\n * Reserves a key to be used for ListenableKey#key field.\n * @return {number} A number to be used to fill ListenableKey#key\n *     field.\n */\ngoog.events.ListenableKey.reserveKey = function() {\n  'use strict';\n  return ++goog.events.ListenableKey.counter_;\n};\n\n\n/**\n * The source event target.\n * @type {?Object|?goog.events.Listenable}\n */\ngoog.events.ListenableKey.prototype.src;\n\n\n/**\n * The event type the listener is listening to.\n * @type {string}\n */\ngoog.events.ListenableKey.prototype.type;\n\n\n/**\n * The listener function.\n * @type {function(?):?|{handleEvent:function(?):?}|null}\n */\ngoog.events.ListenableKey.prototype.listener;\n\n\n/**\n * Whether the listener works on capture phase.\n * @type {boolean}\n */\ngoog.events.ListenableKey.prototype.capture;\n\n\n/**\n * The 'this' object for the listener function's scope.\n * @type {Object|undefined}\n */\ngoog.events.ListenableKey.prototype.handler;\n\n\n/**\n * A globally unique number to identify the key.\n * @type {number}\n */\ngoog.events.ListenableKey.prototype.key;\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Listener object.\n * @see ../demos/events.html\n */\n\ngoog.provide('goog.events.Listener');\n\ngoog.require('goog.events.ListenableKey');\ngoog.requireType('goog.events.Listenable');\n\n\n\n/**\n * Simple class that stores information about a listener\n * @param {function(?):?} listener Callback function.\n * @param {Function} proxy Wrapper for the listener that patches the event.\n * @param {EventTarget|goog.events.Listenable} src Source object for\n *     the event.\n * @param {string} type Event type.\n * @param {boolean} capture Whether in capture or bubble phase.\n * @param {Object=} opt_handler Object in whose context to execute the callback.\n * @implements {goog.events.ListenableKey}\n * @constructor\n */\ngoog.events.Listener = function(\n    listener, proxy, src, type, capture, opt_handler) {\n  'use strict';\n  if (goog.events.Listener.ENABLE_MONITORING) {\n    this.creationStack = new Error().stack;\n  }\n\n  /** @override */\n  this.listener = listener;\n\n  /**\n   * A wrapper over the original listener. This is used solely to\n   * handle native browser events (it is used to simulate the capture\n   * phase and to patch the event object).\n   * @type {Function}\n   */\n  this.proxy = proxy;\n\n  /**\n   * Object or node that callback is listening to\n   * @type {EventTarget|goog.events.Listenable}\n   */\n  this.src = src;\n\n  /**\n   * The event type.\n   * @const {string}\n   */\n  this.type = type;\n\n  /**\n   * Whether the listener is being called in the capture or bubble phase\n   * @const {boolean}\n   */\n  this.capture = !!capture;\n\n  /**\n   * Optional object whose context to execute the listener in\n   * @type {Object|undefined}\n   */\n  this.handler = opt_handler;\n\n  /**\n   * The key of the listener.\n   * @const {number}\n   * @override\n   */\n  this.key = goog.events.ListenableKey.reserveKey();\n\n  /**\n   * Whether to remove the listener after it has been called.\n   * @type {boolean}\n   */\n  this.callOnce = false;\n\n  /**\n   * Whether the listener has been removed.\n   * @type {boolean}\n   */\n  this.removed = false;\n};\n\n\n/**\n * @define {boolean} Whether to enable the monitoring of the\n *     goog.events.Listener instances. Switching on the monitoring is only\n *     recommended for debugging because it has a significant impact on\n *     performance and memory usage. If switched off, the monitoring code\n *     compiles down to 0 bytes.\n */\ngoog.events.Listener.ENABLE_MONITORING =\n    goog.define('goog.events.Listener.ENABLE_MONITORING', false);\n\n\n/**\n * If monitoring the goog.events.Listener instances is enabled, stores the\n * creation stack trace of the Disposable instance.\n * @type {string}\n */\ngoog.events.Listener.prototype.creationStack;\n\n\n/**\n * Marks this listener as removed. This also remove references held by\n * this listener object (such as listener and event source).\n */\ngoog.events.Listener.prototype.markAsRemoved = function() {\n  'use strict';\n  this.removed = true;\n  this.listener = null;\n  this.proxy = null;\n  this.src = null;\n  this.handler = null;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview A map of listeners that provides utility functions to\n * deal with listeners on an event target. Used by\n * `goog.events.EventTarget`.\n *\n * WARNING: Do not use this class from outside goog.events package.\n *\n */\n\ngoog.provide('goog.events.ListenerMap');\n\ngoog.require('goog.array');\ngoog.require('goog.events.Listener');\ngoog.require('goog.object');\ngoog.requireType('goog.events.EventId');\ngoog.requireType('goog.events.Listenable');\ngoog.requireType('goog.events.ListenableKey');\n\n\n\n/**\n * Creates a new listener map.\n * @param {EventTarget|goog.events.Listenable} src The src object.\n * @constructor\n * @final\n */\ngoog.events.ListenerMap = function(src) {\n  'use strict';\n  /** @type {EventTarget|goog.events.Listenable} */\n  this.src = src;\n\n  /**\n   * Maps of event type to an array of listeners.\n   * @type {!Object<string, !Array<!goog.events.Listener>>}\n   */\n  this.listeners = {};\n\n  /**\n   * The count of types in this map that have registered listeners.\n   * @private {number}\n   */\n  this.typeCount_ = 0;\n};\n\n\n/**\n * @return {number} The count of event types in this map that actually\n *     have registered listeners.\n */\ngoog.events.ListenerMap.prototype.getTypeCount = function() {\n  'use strict';\n  return this.typeCount_;\n};\n\n\n/**\n * @return {number} Total number of registered listeners.\n */\ngoog.events.ListenerMap.prototype.getListenerCount = function() {\n  'use strict';\n  var count = 0;\n  for (var type in this.listeners) {\n    count += this.listeners[type].length;\n  }\n  return count;\n};\n\n\n/**\n * Adds an event listener. A listener can only be added once to an\n * object and if it is added again the key for the listener is\n * returned.\n *\n * Note that a one-off listener will not change an existing listener,\n * if any. On the other hand a normal listener will change existing\n * one-off listener to become a normal listener.\n *\n * @param {string|!goog.events.EventId} type The listener event type.\n * @param {!Function} listener This listener callback method.\n * @param {boolean} callOnce Whether the listener is a one-off\n *     listener.\n * @param {boolean=} opt_useCapture The capture mode of the listener.\n * @param {Object=} opt_listenerScope Object in whose scope to call the\n *     listener.\n * @return {!goog.events.ListenableKey} Unique key for the listener.\n */\ngoog.events.ListenerMap.prototype.add = function(\n    type, listener, callOnce, opt_useCapture, opt_listenerScope) {\n  'use strict';\n  var typeStr = type.toString();\n  var listenerArray = this.listeners[typeStr];\n  if (!listenerArray) {\n    listenerArray = this.listeners[typeStr] = [];\n    this.typeCount_++;\n  }\n\n  var listenerObj;\n  var index = goog.events.ListenerMap.findListenerIndex_(\n      listenerArray, listener, opt_useCapture, opt_listenerScope);\n  if (index > -1) {\n    listenerObj = listenerArray[index];\n    if (!callOnce) {\n      // Ensure that, if there is an existing callOnce listener, it is no\n      // longer a callOnce listener.\n      listenerObj.callOnce = false;\n    }\n  } else {\n    listenerObj = new goog.events.Listener(\n        listener, null, this.src, typeStr, !!opt_useCapture, opt_listenerScope);\n    listenerObj.callOnce = callOnce;\n    listenerArray.push(listenerObj);\n  }\n  return listenerObj;\n};\n\n\n/**\n * Removes a matching listener.\n * @param {string|!goog.events.EventId} type The listener event type.\n * @param {!Function} listener This listener callback method.\n * @param {boolean=} opt_useCapture The capture mode of the listener.\n * @param {Object=} opt_listenerScope Object in whose scope to call the\n *     listener.\n * @return {boolean} Whether any listener was removed.\n */\ngoog.events.ListenerMap.prototype.remove = function(\n    type, listener, opt_useCapture, opt_listenerScope) {\n  'use strict';\n  var typeStr = type.toString();\n  if (!(typeStr in this.listeners)) {\n    return false;\n  }\n\n  var listenerArray = this.listeners[typeStr];\n  var index = goog.events.ListenerMap.findListenerIndex_(\n      listenerArray, listener, opt_useCapture, opt_listenerScope);\n  if (index > -1) {\n    var listenerObj = listenerArray[index];\n    listenerObj.markAsRemoved();\n    goog.array.removeAt(listenerArray, index);\n    if (listenerArray.length == 0) {\n      delete this.listeners[typeStr];\n      this.typeCount_--;\n    }\n    return true;\n  }\n  return false;\n};\n\n\n/**\n * Removes the given listener object.\n * @param {!goog.events.ListenableKey} listener The listener to remove.\n * @return {boolean} Whether the listener is removed.\n */\ngoog.events.ListenerMap.prototype.removeByKey = function(listener) {\n  'use strict';\n  var type = listener.type;\n  if (!(type in this.listeners)) {\n    return false;\n  }\n\n  var removed = goog.array.remove(this.listeners[type], listener);\n  if (removed) {\n    /** @type {!goog.events.Listener} */ (listener).markAsRemoved();\n    if (this.listeners[type].length == 0) {\n      delete this.listeners[type];\n      this.typeCount_--;\n    }\n  }\n  return removed;\n};\n\n\n/**\n * Removes all listeners from this map. If opt_type is provided, only\n * listeners that match the given type are removed.\n * @param {string|!goog.events.EventId=} opt_type Type of event to remove.\n * @return {number} Number of listeners removed.\n */\ngoog.events.ListenerMap.prototype.removeAll = function(opt_type) {\n  'use strict';\n  var typeStr = opt_type && opt_type.toString();\n  var count = 0;\n  for (var type in this.listeners) {\n    if (!typeStr || type == typeStr) {\n      var listenerArray = this.listeners[type];\n      for (var i = 0; i < listenerArray.length; i++) {\n        ++count;\n        listenerArray[i].markAsRemoved();\n      }\n      delete this.listeners[type];\n      this.typeCount_--;\n    }\n  }\n  return count;\n};\n\n\n/**\n * Gets all listeners that match the given type and capture mode. The\n * returned array is a copy (but the listener objects are not).\n * @param {string|!goog.events.EventId} type The type of the listeners\n *     to retrieve.\n * @param {boolean} capture The capture mode of the listeners to retrieve.\n * @return {!Array<!goog.events.ListenableKey>} An array of matching\n *     listeners.\n */\ngoog.events.ListenerMap.prototype.getListeners = function(type, capture) {\n  'use strict';\n  var listenerArray = this.listeners[type.toString()];\n  var rv = [];\n  if (listenerArray) {\n    for (var i = 0; i < listenerArray.length; ++i) {\n      var listenerObj = listenerArray[i];\n      if (listenerObj.capture == capture) {\n        rv.push(listenerObj);\n      }\n    }\n  }\n  return rv;\n};\n\n\n/**\n * Gets the goog.events.ListenableKey for the event or null if no such\n * listener is in use.\n *\n * @param {string|!goog.events.EventId} type The type of the listener\n *     to retrieve.\n * @param {!Function} listener The listener function to get.\n * @param {boolean} capture Whether the listener is a capturing listener.\n * @param {Object=} opt_listenerScope Object in whose scope to call the\n *     listener.\n * @return {goog.events.ListenableKey} the found listener or null if not found.\n */\ngoog.events.ListenerMap.prototype.getListener = function(\n    type, listener, capture, opt_listenerScope) {\n  'use strict';\n  var listenerArray = this.listeners[type.toString()];\n  var i = -1;\n  if (listenerArray) {\n    i = goog.events.ListenerMap.findListenerIndex_(\n        listenerArray, listener, capture, opt_listenerScope);\n  }\n  return i > -1 ? listenerArray[i] : null;\n};\n\n\n/**\n * Whether there is a matching listener. If either the type or capture\n * parameters are unspecified, the function will match on the\n * remaining criteria.\n *\n * @param {string|!goog.events.EventId=} opt_type The type of the listener.\n * @param {boolean=} opt_capture The capture mode of the listener.\n * @return {boolean} Whether there is an active listener matching\n *     the requested type and/or capture phase.\n */\ngoog.events.ListenerMap.prototype.hasListener = function(\n    opt_type, opt_capture) {\n  'use strict';\n  var hasType = (opt_type !== undefined);\n  var typeStr = hasType ? opt_type.toString() : '';\n  var hasCapture = (opt_capture !== undefined);\n\n  return goog.object.some(this.listeners, function(listenerArray, type) {\n    'use strict';\n    for (var i = 0; i < listenerArray.length; ++i) {\n      if ((!hasType || listenerArray[i].type == typeStr) &&\n          (!hasCapture || listenerArray[i].capture == opt_capture)) {\n        return true;\n      }\n    }\n\n    return false;\n  });\n};\n\n\n/**\n * Finds the index of a matching goog.events.Listener in the given\n * listenerArray.\n * @param {!Array<!goog.events.Listener>} listenerArray Array of listener.\n * @param {!Function} listener The listener function.\n * @param {boolean=} opt_useCapture The capture flag for the listener.\n * @param {Object=} opt_listenerScope The listener scope.\n * @return {number} The index of the matching listener within the\n *     listenerArray.\n * @private\n */\ngoog.events.ListenerMap.findListenerIndex_ = function(\n    listenerArray, listener, opt_useCapture, opt_listenerScope) {\n  'use strict';\n  for (var i = 0; i < listenerArray.length; ++i) {\n    var listenerObj = listenerArray[i];\n    if (!listenerObj.removed && listenerObj.listener == listener &&\n        listenerObj.capture == !!opt_useCapture &&\n        listenerObj.handler == opt_listenerScope) {\n      return i;\n    }\n  }\n  return -1;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview An event manager for both native browser event\n * targets and custom JavaScript event targets\n * (`goog.events.Listenable`). This provides an abstraction\n * over browsers' event systems.\n *\n * It also provides a simulation of W3C event model's capture phase in\n * Internet Explorer (IE 8 and below). Caveat: the simulation does not\n * interact well with listeners registered directly on the elements\n * (bypassing goog.events) or even with listeners registered via\n * goog.events in a separate JS binary. In these cases, we provide\n * no ordering guarantees.\n *\n * The listeners will receive a \"patched\" event object. Such event object\n * contains normalized values for certain event properties that differs in\n * different browsers.\n *\n * Example usage:\n * <pre>\n * goog.events.listen(myNode, 'click', function(e) { alert('woo') });\n * goog.events.listen(myNode, 'mouseover', mouseHandler, true);\n * goog.events.unlisten(myNode, 'mouseover', mouseHandler, true);\n * goog.events.removeAll(myNode);\n * </pre>\n *\n *                                            in IE and event object patching]\n *\n * @see ../demos/events.html\n * @see ../demos/event-propagation.html\n * @see ../demos/stopevent.html\n */\n\n// IMPLEMENTATION NOTES:\n// goog.events stores an auxiliary data structure on each EventTarget\n// source being listened on. This allows us to take advantage of GC,\n// having the data structure GC'd when the EventTarget is GC'd. This\n// GC behavior is equivalent to using W3C DOM Events directly.\n\ngoog.provide('goog.events');\ngoog.provide('goog.events.CaptureSimulationMode');\ngoog.provide('goog.events.Key');\ngoog.provide('goog.events.ListenableType');\n\ngoog.require('goog.asserts');\ngoog.require('goog.debug.entryPointRegistry');\ngoog.require('goog.events.BrowserEvent');\ngoog.require('goog.events.BrowserFeature');\ngoog.require('goog.events.Listenable');\ngoog.require('goog.events.ListenerMap');\ngoog.requireType('goog.debug.ErrorHandler');\ngoog.requireType('goog.events.EventId');\ngoog.requireType('goog.events.EventLike');\ngoog.requireType('goog.events.EventWrapper');\ngoog.requireType('goog.events.ListenableKey');\ngoog.requireType('goog.events.Listener');\n\n\n/**\n * @typedef {number|goog.events.ListenableKey}\n */\ngoog.events.Key;\n\n\n/**\n * @typedef {EventTarget|goog.events.Listenable}\n */\ngoog.events.ListenableType;\n\n\n/**\n * Property name on a native event target for the listener map\n * associated with the event target.\n * @private @const {string}\n */\ngoog.events.LISTENER_MAP_PROP_ = 'closure_lm_' + ((Math.random() * 1e6) | 0);\n\n\n/**\n * String used to prepend to IE event types.\n * @const\n * @private\n */\ngoog.events.onString_ = 'on';\n\n\n/**\n * Map of computed \"on<eventname>\" strings for IE event types. Caching\n * this removes an extra object allocation in goog.events.listen which\n * improves IE6 performance.\n * @const\n * @dict\n * @private\n */\ngoog.events.onStringMap_ = {};\n\n\n/**\n * @enum {number} Different capture simulation mode for IE8-.\n */\ngoog.events.CaptureSimulationMode = {\n  /**\n   * Does not perform capture simulation. Will asserts in IE8- when you\n   * add capture listeners.\n   */\n  OFF_AND_FAIL: 0,\n\n  /**\n   * Does not perform capture simulation, silently ignore capture\n   * listeners.\n   */\n  OFF_AND_SILENT: 1,\n\n  /**\n   * Performs capture simulation.\n   */\n  ON: 2\n};\n\n\n/**\n * @define {number} The capture simulation mode for IE8-. By default,\n *     this is ON.\n */\ngoog.events.CAPTURE_SIMULATION_MODE =\n    goog.define('goog.events.CAPTURE_SIMULATION_MODE', 2);\n\n\n/**\n * Estimated count of total native listeners.\n * @private {number}\n */\ngoog.events.listenerCountEstimate_ = 0;\n\n\n/**\n * Adds an event listener for a specific event on a native event\n * target (such as a DOM element) or an object that has implemented\n * {@link goog.events.Listenable}. A listener can only be added once\n * to an object and if it is added again the key for the listener is\n * returned. Note that if the existing listener is a one-off listener\n * (registered via listenOnce), it will no longer be a one-off\n * listener after a call to listen().\n *\n * @param {EventTarget|goog.events.Listenable} src The node to listen\n *     to events on.\n * @param {string|Array<string>|\n *     !goog.events.EventId<EVENTOBJ>|!Array<!goog.events.EventId<EVENTOBJ>>}\n *     type Event type or array of event types.\n * @param {function(this:T, EVENTOBJ):?|{handleEvent:function(?):?}|null}\n *     listener Callback method, or an object with a handleEvent function.\n *     WARNING: passing an Object is now softly deprecated.\n * @param {(boolean|!AddEventListenerOptions)=} opt_options\n * @param {T=} opt_handler Element in whose scope to call the listener.\n * @return {goog.events.Key} Unique key for the listener.\n * @template T,EVENTOBJ\n */\ngoog.events.listen = function(src, type, listener, opt_options, opt_handler) {\n  'use strict';\n  if (opt_options && opt_options.once) {\n    return goog.events.listenOnce(\n        src, type, listener, opt_options, opt_handler);\n  }\n  if (Array.isArray(type)) {\n    for (var i = 0; i < type.length; i++) {\n      goog.events.listen(src, type[i], listener, opt_options, opt_handler);\n    }\n    return null;\n  }\n\n  listener = goog.events.wrapListener(listener);\n  if (goog.events.Listenable.isImplementedBy(src)) {\n    var capture =\n        goog.isObject(opt_options) ? !!opt_options.capture : !!opt_options;\n    return src.listen(\n        /** @type {string|!goog.events.EventId} */ (type), listener, capture,\n        opt_handler);\n  } else {\n    return goog.events.listen_(\n        /** @type {!EventTarget} */ (src), type, listener,\n        /* callOnce */ false, opt_options, opt_handler);\n  }\n};\n\n\n/**\n * Adds an event listener for a specific event on a native event\n * target. A listener can only be added once to an object and if it\n * is added again the key for the listener is returned.\n *\n * Note that a one-off listener will not change an existing listener,\n * if any. On the other hand a normal listener will change existing\n * one-off listener to become a normal listener.\n *\n * @param {EventTarget} src The node to listen to events on.\n * @param {string|?goog.events.EventId<EVENTOBJ>} type Event type.\n * @param {!Function} listener Callback function.\n * @param {boolean} callOnce Whether the listener is a one-off\n *     listener or otherwise.\n * @param {(boolean|!AddEventListenerOptions)=} opt_options\n * @param {Object=} opt_handler Element in whose scope to call the listener.\n * @return {goog.events.ListenableKey} Unique key for the listener.\n * @template EVENTOBJ\n * @private\n */\ngoog.events.listen_ = function(\n    src, type, listener, callOnce, opt_options, opt_handler) {\n  'use strict';\n  if (!type) {\n    throw new Error('Invalid event type');\n  }\n\n  var capture =\n      goog.isObject(opt_options) ? !!opt_options.capture : !!opt_options;\n  if (capture && !goog.events.BrowserFeature.HAS_W3C_EVENT_SUPPORT) {\n    if (goog.events.CAPTURE_SIMULATION_MODE ==\n        goog.events.CaptureSimulationMode.OFF_AND_FAIL) {\n      goog.asserts.fail('Can not register capture listener in IE8-.');\n      return null;\n    } else if (\n        goog.events.CAPTURE_SIMULATION_MODE ==\n        goog.events.CaptureSimulationMode.OFF_AND_SILENT) {\n      return null;\n    }\n  }\n\n  var listenerMap = goog.events.getListenerMap_(src);\n  if (!listenerMap) {\n    src[goog.events.LISTENER_MAP_PROP_] = listenerMap =\n        new goog.events.ListenerMap(src);\n  }\n\n  var listenerObj = /** @type {goog.events.Listener} */ (\n      listenerMap.add(type, listener, callOnce, capture, opt_handler));\n\n  // If the listenerObj already has a proxy, it has been set up\n  // previously. We simply return.\n  if (listenerObj.proxy) {\n    return listenerObj;\n  }\n\n  var proxy = goog.events.getProxy();\n  listenerObj.proxy = proxy;\n\n  proxy.src = src;\n  proxy.listener = listenerObj;\n\n  // Attach the proxy through the browser's API\n  if (src.addEventListener) {\n    // Don't pass an object as `capture` if the browser doesn't support that.\n    if (!goog.events.BrowserFeature.PASSIVE_EVENTS) {\n      opt_options = capture;\n    }\n    // Don't break tests that expect a boolean.\n    if (opt_options === undefined) opt_options = false;\n    src.addEventListener(type.toString(), proxy, opt_options);\n  } else if (src.attachEvent) {\n    // The else if above used to be an unconditional else. It would call\n    // attachEvent come gws or high water. This would sometimes throw an\n    // exception on IE11, spoiling the day of some callers. The previous\n    // incarnation of this code, from 2007, indicates that it replaced an\n    // earlier still version that caused excess allocations on IE6.\n    src.attachEvent(goog.events.getOnString_(type.toString()), proxy);\n  } else if (src.addListener && src.removeListener) {\n    // In IE, MediaQueryList uses addListener() insteadd of addEventListener. In\n    // Safari, there is no global for the MediaQueryList constructor, so we just\n    // check whether the object \"looks like\" MediaQueryList.\n    goog.asserts.assert(\n        type === 'change', 'MediaQueryList only has a change event');\n    src.addListener(proxy);\n  } else {\n    throw new Error('addEventListener and attachEvent are unavailable.');\n  }\n\n  goog.events.listenerCountEstimate_++;\n  return listenerObj;\n};\n\n\n/**\n * Helper function for returning a proxy function.\n * @return {!Function} A new or reused function object.\n */\ngoog.events.getProxy = function() {\n  'use strict';\n  var proxyCallbackFunction = goog.events.handleBrowserEvent_;\n  // Use a local var f to prevent one allocation.\n  var f =\n      goog.events.BrowserFeature.HAS_W3C_EVENT_SUPPORT ? function(eventObject) {\n        'use strict';\n        return proxyCallbackFunction.call(f.src, f.listener, eventObject);\n      } : function(eventObject) {\n        'use strict';\n        var v = proxyCallbackFunction.call(f.src, f.listener, eventObject);\n        // NOTE(chrishenry): In IE, we hack in a capture phase. However, if\n        // there is inline event handler which tries to prevent default (for\n        // example <a href=\"...\" onclick=\"return false\">...</a>) in a\n        // descendant element, the prevent default will be overridden\n        // by this listener if this listener were to return true. Hence, we\n        // return undefined.\n        if (!v) return v;\n      };\n  return f;\n};\n\n\n/**\n * Adds an event listener for a specific event on a native event\n * target (such as a DOM element) or an object that has implemented\n * {@link goog.events.Listenable}. After the event has fired the event\n * listener is removed from the target.\n *\n * If an existing listener already exists, listenOnce will do\n * nothing. In particular, if the listener was previously registered\n * via listen(), listenOnce() will not turn the listener into a\n * one-off listener. Similarly, if there is already an existing\n * one-off listener, listenOnce does not modify the listeners (it is\n * still a once listener).\n *\n * @param {EventTarget|goog.events.Listenable} src The node to listen\n *     to events on.\n * @param {string|Array<string>|\n *     !goog.events.EventId<EVENTOBJ>|!Array<!goog.events.EventId<EVENTOBJ>>}\n *     type Event type or array of event types.\n * @param {function(this:T, EVENTOBJ):?|{handleEvent:function(?):?}|null}\n *     listener Callback method.\n * @param {(boolean|!AddEventListenerOptions)=} opt_options\n * @param {T=} opt_handler Element in whose scope to call the listener.\n * @return {goog.events.Key} Unique key for the listener.\n * @template T,EVENTOBJ\n */\ngoog.events.listenOnce = function(\n    src, type, listener, opt_options, opt_handler) {\n  'use strict';\n  if (Array.isArray(type)) {\n    for (var i = 0; i < type.length; i++) {\n      goog.events.listenOnce(src, type[i], listener, opt_options, opt_handler);\n    }\n    return null;\n  }\n\n  listener = goog.events.wrapListener(listener);\n  if (goog.events.Listenable.isImplementedBy(src)) {\n    var capture =\n        goog.isObject(opt_options) ? !!opt_options.capture : !!opt_options;\n    return src.listenOnce(\n        /** @type {string|!goog.events.EventId} */ (type), listener, capture,\n        opt_handler);\n  } else {\n    return goog.events.listen_(\n        /** @type {!EventTarget} */ (src), type, listener,\n        /* callOnce */ true, opt_options, opt_handler);\n  }\n};\n\n\n/**\n * Adds an event listener with a specific event wrapper on a DOM Node or an\n * object that has implemented {@link goog.events.Listenable}. A listener can\n * only be added once to an object.\n *\n * @param {EventTarget|goog.events.Listenable} src The target to\n *     listen to events on.\n * @param {goog.events.EventWrapper} wrapper Event wrapper to use.\n * @param {function(this:T, ?):?|{handleEvent:function(?):?}|null} listener\n *     Callback method, or an object with a handleEvent function.\n * @param {boolean=} opt_capt Whether to fire in capture phase (defaults to\n *     false).\n * @param {T=} opt_handler Element in whose scope to call the listener.\n * @template T\n */\ngoog.events.listenWithWrapper = function(\n    src, wrapper, listener, opt_capt, opt_handler) {\n  'use strict';\n  wrapper.listen(src, listener, opt_capt, opt_handler);\n};\n\n\n/**\n * Removes an event listener which was added with listen().\n *\n * @param {EventTarget|goog.events.Listenable} src The target to stop\n *     listening to events on.\n * @param {string|Array<string>|\n *     !goog.events.EventId<EVENTOBJ>|!Array<!goog.events.EventId<EVENTOBJ>>}\n *     type Event type or array of event types to unlisten to.\n * @param {function(?):?|{handleEvent:function(?):?}|null} listener The\n *     listener function to remove.\n * @param {(boolean|!EventListenerOptions)=} opt_options\n *     whether the listener is fired during the capture or bubble phase of the\n *     event.\n * @param {Object=} opt_handler Element in whose scope to call the listener.\n * @return {?boolean} indicating whether the listener was there to remove.\n * @template EVENTOBJ\n */\ngoog.events.unlisten = function(src, type, listener, opt_options, opt_handler) {\n  'use strict';\n  if (Array.isArray(type)) {\n    for (var i = 0; i < type.length; i++) {\n      goog.events.unlisten(src, type[i], listener, opt_options, opt_handler);\n    }\n    return null;\n  }\n  var capture =\n      goog.isObject(opt_options) ? !!opt_options.capture : !!opt_options;\n\n  listener = goog.events.wrapListener(listener);\n  if (goog.events.Listenable.isImplementedBy(src)) {\n    return src.unlisten(\n        /** @type {string|!goog.events.EventId} */ (type), listener, capture,\n        opt_handler);\n  }\n\n  if (!src) {\n    // TODO(chrishenry): We should tighten the API to only accept\n    // non-null objects, or add an assertion here.\n    return false;\n  }\n\n  var listenerMap = goog.events.getListenerMap_(\n      /** @type {!EventTarget} */ (src));\n  if (listenerMap) {\n    var listenerObj = listenerMap.getListener(\n        /** @type {string|!goog.events.EventId} */ (type), listener, capture,\n        opt_handler);\n    if (listenerObj) {\n      return goog.events.unlistenByKey(listenerObj);\n    }\n  }\n\n  return false;\n};\n\n\n/**\n * Removes an event listener which was added with listen() by the key\n * returned by listen().\n *\n * @param {goog.events.Key} key The key returned by listen() for this\n *     event listener.\n * @return {boolean} indicating whether the listener was there to remove.\n */\ngoog.events.unlistenByKey = function(key) {\n  'use strict';\n  // TODO(chrishenry): Remove this check when tests that rely on this\n  // are fixed.\n  if (typeof key === 'number') {\n    return false;\n  }\n\n  var listener = key;\n  if (!listener || listener.removed) {\n    return false;\n  }\n\n  var src = listener.src;\n  if (goog.events.Listenable.isImplementedBy(src)) {\n    return /** @type {!goog.events.Listenable} */ (src).unlistenByKey(listener);\n  }\n\n  var type = listener.type;\n  var proxy = listener.proxy;\n  if (src.removeEventListener) {\n    src.removeEventListener(type, proxy, listener.capture);\n  } else if (src.detachEvent) {\n    src.detachEvent(goog.events.getOnString_(type), proxy);\n  } else if (src.addListener && src.removeListener) {\n    src.removeListener(proxy);\n  }\n  goog.events.listenerCountEstimate_--;\n\n  var listenerMap = goog.events.getListenerMap_(\n      /** @type {!EventTarget} */ (src));\n  // TODO(chrishenry): Try to remove this conditional and execute the\n  // first branch always. This should be safe.\n  if (listenerMap) {\n    listenerMap.removeByKey(listener);\n    if (listenerMap.getTypeCount() == 0) {\n      // Null the src, just because this is simple to do (and useful\n      // for IE <= 7).\n      listenerMap.src = null;\n      // We don't use delete here because IE does not allow delete\n      // on a window object.\n      src[goog.events.LISTENER_MAP_PROP_] = null;\n    }\n  } else {\n    /** @type {!goog.events.Listener} */ (listener).markAsRemoved();\n  }\n\n  return true;\n};\n\n\n/**\n * Removes an event listener which was added with listenWithWrapper().\n *\n * @param {EventTarget|goog.events.Listenable} src The target to stop\n *     listening to events on.\n * @param {goog.events.EventWrapper} wrapper Event wrapper to use.\n * @param {function(?):?|{handleEvent:function(?):?}|null} listener The\n *     listener function to remove.\n * @param {boolean=} opt_capt In DOM-compliant browsers, this determines\n *     whether the listener is fired during the capture or bubble phase of the\n *     event.\n * @param {Object=} opt_handler Element in whose scope to call the listener.\n */\ngoog.events.unlistenWithWrapper = function(\n    src, wrapper, listener, opt_capt, opt_handler) {\n  'use strict';\n  wrapper.unlisten(src, listener, opt_capt, opt_handler);\n};\n\n\n/**\n * Removes all listeners from an object. You can also optionally\n * remove listeners of a particular type.\n *\n * @param {Object|undefined} obj Object to remove listeners from. Must be an\n *     EventTarget or a goog.events.Listenable.\n * @param {string|!goog.events.EventId=} opt_type Type of event to remove.\n *     Default is all types.\n * @return {number} Number of listeners removed.\n */\ngoog.events.removeAll = function(obj, opt_type) {\n  'use strict';\n  // TODO(chrishenry): Change the type of obj to\n  // (!EventTarget|!goog.events.Listenable).\n\n  if (!obj) {\n    return 0;\n  }\n\n  if (goog.events.Listenable.isImplementedBy(obj)) {\n    return /** @type {?} */ (obj).removeAllListeners(opt_type);\n  }\n\n  var listenerMap = goog.events.getListenerMap_(\n      /** @type {!EventTarget} */ (obj));\n  if (!listenerMap) {\n    return 0;\n  }\n\n  var count = 0;\n  var typeStr = opt_type && opt_type.toString();\n  for (var type in listenerMap.listeners) {\n    if (!typeStr || type == typeStr) {\n      // Clone so that we don't need to worry about unlistenByKey\n      // changing the content of the ListenerMap.\n      var listeners = listenerMap.listeners[type].concat();\n      for (var i = 0; i < listeners.length; ++i) {\n        if (goog.events.unlistenByKey(listeners[i])) {\n          ++count;\n        }\n      }\n    }\n  }\n  return count;\n};\n\n\n/**\n * Gets the listeners for a given object, type and capture phase.\n *\n * @param {Object} obj Object to get listeners for.\n * @param {string|!goog.events.EventId} type Event type.\n * @param {boolean} capture Capture phase?.\n * @return {!Array<!goog.events.Listener>} Array of listener objects.\n */\ngoog.events.getListeners = function(obj, type, capture) {\n  'use strict';\n  if (goog.events.Listenable.isImplementedBy(obj)) {\n    return /** @type {!goog.events.Listenable} */ (obj).getListeners(\n        type, capture);\n  } else {\n    if (!obj) {\n      // TODO(chrishenry): We should tighten the API to accept\n      // !EventTarget|goog.events.Listenable, and add an assertion here.\n      return [];\n    }\n\n    var listenerMap = goog.events.getListenerMap_(\n        /** @type {!EventTarget} */ (obj));\n    return listenerMap ? listenerMap.getListeners(type, capture) : [];\n  }\n};\n\n\n/**\n * Gets the goog.events.Listener for the event or null if no such listener is\n * in use.\n *\n * @param {EventTarget|goog.events.Listenable} src The target from\n *     which to get listeners.\n * @param {?string|!goog.events.EventId<EVENTOBJ>} type The type of the event.\n * @param {function(EVENTOBJ):?|{handleEvent:function(?):?}|null} listener The\n *     listener function to get.\n * @param {boolean=} opt_capt In DOM-compliant browsers, this determines\n *                            whether the listener is fired during the\n *                            capture or bubble phase of the event.\n * @param {Object=} opt_handler Element in whose scope to call the listener.\n * @return {goog.events.ListenableKey} the found listener or null if not found.\n * @template EVENTOBJ\n */\ngoog.events.getListener = function(src, type, listener, opt_capt, opt_handler) {\n  'use strict';\n  // TODO(chrishenry): Change type from ?string to string, or add assertion.\n  type = /** @type {string} */ (type);\n  listener = goog.events.wrapListener(listener);\n  var capture = !!opt_capt;\n  if (goog.events.Listenable.isImplementedBy(src)) {\n    return src.getListener(type, listener, capture, opt_handler);\n  }\n\n  if (!src) {\n    // TODO(chrishenry): We should tighten the API to only accept\n    // non-null objects, or add an assertion here.\n    return null;\n  }\n\n  var listenerMap = goog.events.getListenerMap_(\n      /** @type {!EventTarget} */ (src));\n  if (listenerMap) {\n    return listenerMap.getListener(type, listener, capture, opt_handler);\n  }\n  return null;\n};\n\n\n/**\n * Returns whether an event target has any active listeners matching the\n * specified signature. If either the type or capture parameters are\n * unspecified, the function will match on the remaining criteria.\n *\n * @param {EventTarget|goog.events.Listenable} obj Target to get\n *     listeners for.\n * @param {string|!goog.events.EventId=} opt_type Event type.\n * @param {boolean=} opt_capture Whether to check for capture or bubble-phase\n *     listeners.\n * @return {boolean} Whether an event target has one or more listeners matching\n *     the requested type and/or capture phase.\n */\ngoog.events.hasListener = function(obj, opt_type, opt_capture) {\n  'use strict';\n  if (goog.events.Listenable.isImplementedBy(obj)) {\n    return obj.hasListener(opt_type, opt_capture);\n  }\n\n  var listenerMap = goog.events.getListenerMap_(\n      /** @type {!EventTarget} */ (obj));\n  return !!listenerMap && listenerMap.hasListener(opt_type, opt_capture);\n};\n\n\n/**\n * Provides a nice string showing the normalized event objects public members\n * @param {Object} e Event Object.\n * @return {string} String of the public members of the normalized event object.\n */\ngoog.events.expose = function(e) {\n  'use strict';\n  var str = [];\n  for (var key in e) {\n    if (e[key] && e[key].id) {\n      str.push(key + ' = ' + e[key] + ' (' + e[key].id + ')');\n    } else {\n      str.push(key + ' = ' + e[key]);\n    }\n  }\n  return str.join('\\n');\n};\n\n\n/**\n * Returns a string with on prepended to the specified type. This is used for IE\n * which expects \"on\" to be prepended. This function caches the string in order\n * to avoid extra allocations in steady state.\n * @param {string} type Event type.\n * @return {string} The type string with 'on' prepended.\n * @private\n */\ngoog.events.getOnString_ = function(type) {\n  'use strict';\n  if (type in goog.events.onStringMap_) {\n    return goog.events.onStringMap_[type];\n  }\n  return goog.events.onStringMap_[type] = goog.events.onString_ + type;\n};\n\n\n/**\n * Fires an object's listeners of a particular type and phase\n *\n * @param {Object} obj Object whose listeners to call.\n * @param {string|!goog.events.EventId} type Event type.\n * @param {boolean} capture Which event phase.\n * @param {Object} eventObject Event object to be passed to listener.\n * @return {boolean} True if all listeners returned true else false.\n */\ngoog.events.fireListeners = function(obj, type, capture, eventObject) {\n  'use strict';\n  if (goog.events.Listenable.isImplementedBy(obj)) {\n    return /** @type {!goog.events.Listenable} */ (obj).fireListeners(\n        type, capture, eventObject);\n  }\n\n  return goog.events.fireListeners_(obj, type, capture, eventObject);\n};\n\n\n/**\n * Fires an object's listeners of a particular type and phase.\n * @param {Object} obj Object whose listeners to call.\n * @param {string|!goog.events.EventId} type Event type.\n * @param {boolean} capture Which event phase.\n * @param {Object} eventObject Event object to be passed to listener.\n * @return {boolean} True if all listeners returned true else false.\n * @private\n */\ngoog.events.fireListeners_ = function(obj, type, capture, eventObject) {\n  'use strict';\n  /** @type {boolean} */\n  var retval = true;\n\n  var listenerMap = goog.events.getListenerMap_(\n      /** @type {EventTarget} */ (obj));\n  if (listenerMap) {\n    // TODO(chrishenry): Original code avoids array creation when there\n    // is no listener, so we do the same. If this optimization turns\n    // out to be not required, we can replace this with\n    // listenerMap.getListeners(type, capture) instead, which is simpler.\n    var listenerArray = listenerMap.listeners[type.toString()];\n    if (listenerArray) {\n      listenerArray = listenerArray.concat();\n      for (var i = 0; i < listenerArray.length; i++) {\n        var listener = listenerArray[i];\n        // We might not have a listener if the listener was removed.\n        if (listener && listener.capture == capture && !listener.removed) {\n          var result = goog.events.fireListener(listener, eventObject);\n          retval = retval && (result !== false);\n        }\n      }\n    }\n  }\n  return retval;\n};\n\n\n/**\n * Fires a listener with a set of arguments\n *\n * @param {goog.events.Listener} listener The listener object to call.\n * @param {Object} eventObject The event object to pass to the listener.\n * @return {*} Result of listener.\n */\ngoog.events.fireListener = function(listener, eventObject) {\n  'use strict';\n  var listenerFn = listener.listener;\n  var listenerHandler = listener.handler || listener.src;\n\n  if (listener.callOnce) {\n    goog.events.unlistenByKey(listener);\n  }\n  return listenerFn.call(listenerHandler, eventObject);\n};\n\n\n/**\n * Gets the total number of listeners currently in the system.\n * @return {number} Number of listeners.\n * @deprecated This returns estimated count, now that Closure no longer\n * stores a central listener registry. We still return an estimation\n * to keep existing listener-related tests passing. In the near future,\n * this function will be removed.\n */\ngoog.events.getTotalListenerCount = function() {\n  'use strict';\n  return goog.events.listenerCountEstimate_;\n};\n\n\n/**\n * Dispatches an event (or event like object) and calls all listeners\n * listening for events of this type. The type of the event is decided by the\n * type property on the event object.\n *\n * If any of the listeners returns false OR calls preventDefault then this\n * function will return false.  If one of the capture listeners calls\n * stopPropagation, then the bubble listeners won't fire.\n *\n * @param {goog.events.Listenable} src The event target.\n * @param {goog.events.EventLike} e Event object.\n * @return {boolean} If anyone called preventDefault on the event object (or\n *     if any of the handlers returns false) this will also return false.\n *     If there are no handlers, or if all handlers return true, this returns\n *     true.\n */\ngoog.events.dispatchEvent = function(src, e) {\n  'use strict';\n  goog.asserts.assert(\n      goog.events.Listenable.isImplementedBy(src),\n      'Can not use goog.events.dispatchEvent with ' +\n          'non-goog.events.Listenable instance.');\n  return src.dispatchEvent(e);\n};\n\n\n/**\n * Installs exception protection for the browser event entry point using the\n * given error handler.\n *\n * @param {goog.debug.ErrorHandler} errorHandler Error handler with which to\n *     protect the entry point.\n */\ngoog.events.protectBrowserEventEntryPoint = function(errorHandler) {\n  'use strict';\n  goog.events.handleBrowserEvent_ =\n      errorHandler.protectEntryPoint(goog.events.handleBrowserEvent_);\n};\n\n\n/**\n * Handles an event and dispatches it to the correct listeners. This\n * function is a proxy for the real listener the user specified.\n *\n * @param {goog.events.Listener} listener The listener object.\n * @param {Event=} opt_evt Optional event object that gets passed in via the\n *     native event handlers.\n * @return {*} Result of the event handler.\n * @this {EventTarget} The object or Element that fired the event.\n * @private\n */\ngoog.events.handleBrowserEvent_ = function(listener, opt_evt) {\n  'use strict';\n  if (listener.removed) {\n    return true;\n  }\n\n  // Synthesize event propagation if the browser does not support W3C\n  // event model.\n  if (!goog.events.BrowserFeature.HAS_W3C_EVENT_SUPPORT) {\n    var ieEvent = opt_evt ||\n        /** @type {Event} */ (goog.getObjectByName('window.event'));\n    var evt = new goog.events.BrowserEvent(ieEvent, this);\n    /** @type {*} */\n    var retval = true;\n\n    if (goog.events.CAPTURE_SIMULATION_MODE ==\n        goog.events.CaptureSimulationMode.ON) {\n      // If we have not marked this event yet, we should perform capture\n      // simulation.\n      if (!goog.events.isMarkedIeEvent_(ieEvent)) {\n        goog.events.markIeEvent_(ieEvent);\n\n        var ancestors = [];\n        for (var parent = evt.currentTarget; parent;\n             parent = parent.parentNode) {\n          ancestors.push(parent);\n        }\n\n        // Fire capture listeners.\n        var type = listener.type;\n        for (var i = ancestors.length - 1;\n             !evt.hasPropagationStopped() && i >= 0; i--) {\n          evt.currentTarget = ancestors[i];\n          var result =\n              goog.events.fireListeners_(ancestors[i], type, true, evt);\n          retval = retval && result;\n        }\n\n        // Fire bubble listeners.\n        //\n        // We can technically rely on IE to perform bubble event\n        // propagation. However, it turns out that IE fires events in\n        // opposite order of attachEvent registration, which broke\n        // some code and tests that rely on the order. (While W3C DOM\n        // Level 2 Events TR leaves the event ordering unspecified,\n        // modern browsers and W3C DOM Level 3 Events Working Draft\n        // actually specify the order as the registration order.)\n        for (var i = 0; !evt.hasPropagationStopped() && i < ancestors.length;\n             i++) {\n          evt.currentTarget = ancestors[i];\n          var result =\n              goog.events.fireListeners_(ancestors[i], type, false, evt);\n          retval = retval && result;\n        }\n      }\n    } else {\n      retval = goog.events.fireListener(listener, evt);\n    }\n    return retval;\n  }\n\n  // Otherwise, simply fire the listener.\n  return goog.events.fireListener(\n      listener, new goog.events.BrowserEvent(opt_evt, this));\n};\n\n\n/**\n * This is used to mark the IE event object so we do not do the Closure pass\n * twice for a bubbling event.\n * @param {Event} e The IE browser event.\n * @private\n */\ngoog.events.markIeEvent_ = function(e) {\n  'use strict';\n  // Only the keyCode and the returnValue can be changed. We use keyCode for\n  // non keyboard events.\n  // event.returnValue is a bit more tricky. It is undefined by default. A\n  // boolean false prevents the default action. In a window.onbeforeunload and\n  // the returnValue is non undefined it will be alerted. However, we will only\n  // modify the returnValue for keyboard events. We can get a problem if non\n  // closure events sets the keyCode or the returnValue\n\n  var useReturnValue = false;\n\n  if (e.keyCode == 0) {\n    // We cannot change the keyCode in case that srcElement is input[type=file].\n    // We could test that that is the case but that would allocate 3 objects.\n    // If we use try/catch we will only allocate extra objects in the case of a\n    // failure.\n\n    try {\n      e.keyCode = -1;\n      return;\n    } catch (ex) {\n      useReturnValue = true;\n    }\n  }\n\n  if (useReturnValue ||\n      /** @type {boolean|undefined} */ (e.returnValue) == undefined) {\n    e.returnValue = true;\n  }\n};\n\n\n/**\n * This is used to check if an IE event has already been handled by the Closure\n * system so we do not do the Closure pass twice for a bubbling event.\n * @param {Event} e  The IE browser event.\n * @return {boolean} True if the event object has been marked.\n * @private\n */\ngoog.events.isMarkedIeEvent_ = function(e) {\n  'use strict';\n  return e.keyCode < 0 || e.returnValue != undefined;\n};\n\n\n/**\n * Counter to create unique event ids.\n * @private {number}\n */\ngoog.events.uniqueIdCounter_ = 0;\n\n\n/**\n * Creates a unique event id.\n *\n * @param {string} identifier The identifier.\n * @return {string} A unique identifier.\n * @idGenerator {unique}\n */\ngoog.events.getUniqueId = function(identifier) {\n  'use strict';\n  return identifier + '_' + goog.events.uniqueIdCounter_++;\n};\n\n\n/**\n * @param {EventTarget} src The source object.\n * @return {goog.events.ListenerMap} A listener map for the given\n *     source object, or null if none exists.\n * @private\n */\ngoog.events.getListenerMap_ = function(src) {\n  'use strict';\n  var listenerMap = src[goog.events.LISTENER_MAP_PROP_];\n  // IE serializes the property as well (e.g. when serializing outer\n  // HTML). So we must check that the value is of the correct type.\n  return listenerMap instanceof goog.events.ListenerMap ? listenerMap : null;\n};\n\n\n/**\n * Expando property for listener function wrapper for Object with\n * handleEvent.\n * @private @const {string}\n */\ngoog.events.LISTENER_WRAPPER_PROP_ =\n    '__closure_events_fn_' + ((Math.random() * 1e9) >>> 0);\n\n\n/**\n * @param {Object|Function} listener The listener function or an\n *     object that contains handleEvent method.\n * @return {!Function} Either the original function or a function that\n *     calls obj.handleEvent. If the same listener is passed to this\n *     function more than once, the same function is guaranteed to be\n *     returned.\n */\ngoog.events.wrapListener = function(listener) {\n  'use strict';\n  goog.asserts.assert(listener, 'Listener can not be null.');\n\n  if (typeof listener === 'function') {\n    return listener;\n  }\n\n  goog.asserts.assert(\n      listener.handleEvent, 'An object listener must have handleEvent method.');\n  if (!listener[goog.events.LISTENER_WRAPPER_PROP_]) {\n    listener[goog.events.LISTENER_WRAPPER_PROP_] = function(e) {\n      'use strict';\n      return /** @type {?} */ (listener).handleEvent(e);\n    };\n  }\n  return listener[goog.events.LISTENER_WRAPPER_PROP_];\n};\n\n\n// Register the browser event handler as an entry point, so that\n// it can be monitored for exception handling, etc.\ngoog.debug.entryPointRegistry.register(\n    /**\n     * @param {function(!Function): !Function} transformer The transforming\n     *     function.\n     */\n    function(transformer) {\n      'use strict';\n      goog.events.handleBrowserEvent_ =\n          transformer(goog.events.handleBrowserEvent_);\n    });\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview A disposable implementation of a custom\n * listenable/event target. See also: documentation for\n * `goog.events.Listenable`.\n *\n * @see ../demos/eventtarget.html\n * @see goog.events.Listenable\n */\n\ngoog.provide('goog.events.EventTarget');\n\ngoog.require('goog.Disposable');\ngoog.require('goog.asserts');\ngoog.require('goog.events');\ngoog.require('goog.events.Event');\ngoog.require('goog.events.Listenable');\ngoog.require('goog.events.ListenerMap');\ngoog.require('goog.object');\ngoog.requireType('goog.events.EventId');\ngoog.requireType('goog.events.EventLike');\ngoog.requireType('goog.events.ListenableKey');\n\n\n\n/**\n * An implementation of `goog.events.Listenable` with full W3C\n * EventTarget-like support (capture/bubble mechanism, stopping event\n * propagation, preventing default actions).\n *\n * You may subclass this class to turn your class into a Listenable.\n *\n * Unless propagation is stopped, an event dispatched by an\n * EventTarget will bubble to the parent returned by\n * `getParentEventTarget`. To set the parent, call\n * `setParentEventTarget`. Subclasses that don't support\n * changing the parent can override the setter to throw an error.\n *\n * Example usage:\n * <pre>\n *   var source = new goog.events.EventTarget();\n *   function handleEvent(e) {\n *     alert('Type: ' + e.type + '; Target: ' + e.target);\n *   }\n *   source.listen('foo', handleEvent);\n *   // Or: goog.events.listen(source, 'foo', handleEvent);\n *   ...\n *   source.dispatchEvent('foo');  // will call handleEvent\n *   ...\n *   source.unlisten('foo', handleEvent);\n *   // Or: goog.events.unlisten(source, 'foo', handleEvent);\n * </pre>\n *\n * @constructor\n * @extends {goog.Disposable}\n * @implements {goog.events.Listenable}\n */\ngoog.events.EventTarget = function() {\n  'use strict';\n  goog.Disposable.call(this);\n\n  /**\n   * Maps of event type to an array of listeners.\n   * @private {!goog.events.ListenerMap}\n   */\n  this.eventTargetListeners_ = new goog.events.ListenerMap(this);\n\n  /**\n   * The object to use for event.target. Useful when mixing in an\n   * EventTarget to another object.\n   * @private {!Object}\n   */\n  this.actualEventTarget_ = this;\n\n  /**\n   * Parent event target, used during event bubbling.\n   *\n   * TODO(chrishenry): Change this to goog.events.Listenable. This\n   * currently breaks people who expect getParentEventTarget to return\n   * goog.events.EventTarget.\n   *\n   * @private {?goog.events.EventTarget}\n   */\n  this.parentEventTarget_ = null;\n};\ngoog.inherits(goog.events.EventTarget, goog.Disposable);\ngoog.events.Listenable.addImplementation(goog.events.EventTarget);\n\n\n/**\n * An artificial cap on the number of ancestors you can have. This is mainly\n * for loop detection.\n * @const {number}\n * @private\n */\ngoog.events.EventTarget.MAX_ANCESTORS_ = 1000;\n\n\n/**\n * Returns the parent of this event target to use for bubbling.\n *\n * @return {goog.events.EventTarget} The parent EventTarget or null if\n *     there is no parent.\n * @override\n */\ngoog.events.EventTarget.prototype.getParentEventTarget = function() {\n  'use strict';\n  return this.parentEventTarget_;\n};\n\n\n/**\n * Sets the parent of this event target to use for capture/bubble\n * mechanism.\n * @param {goog.events.EventTarget} parent Parent listenable (null if none).\n */\ngoog.events.EventTarget.prototype.setParentEventTarget = function(parent) {\n  'use strict';\n  this.parentEventTarget_ = parent;\n};\n\n\n/**\n * Adds an event listener to the event target. The same handler can only be\n * added once per the type. Even if you add the same handler multiple times\n * using the same type then it will only be called once when the event is\n * dispatched.\n *\n * @param {string|!goog.events.EventId} type The type of the event to listen for\n * @param {function(?):?|{handleEvent:function(?):?}|null} handler The function\n *     to handle the event. The handler can also be an object that implements\n *     the handleEvent method which takes the event object as argument.\n * @param {boolean=} opt_capture In DOM-compliant browsers, this determines\n *     whether the listener is fired during the capture or bubble phase\n *     of the event.\n * @param {Object=} opt_handlerScope Object in whose scope to call\n *     the listener.\n * @deprecated Use `#listen` instead, when possible. Otherwise, use\n *     `goog.events.listen` if you are passing Object\n *     (instead of Function) as handler.\n */\ngoog.events.EventTarget.prototype.addEventListener = function(\n    type, handler, opt_capture, opt_handlerScope) {\n  'use strict';\n  goog.events.listen(this, type, handler, opt_capture, opt_handlerScope);\n};\n\n\n/**\n * Removes an event listener from the event target. The handler must be the\n * same object as the one added. If the handler has not been added then\n * nothing is done.\n *\n * @param {string|!goog.events.EventId} type The type of the event to listen for\n * @param {function(?):?|{handleEvent:function(?):?}|null} handler The function\n *     to handle the event. The handler can also be an object that implements\n *     the handleEvent method which takes the event object as argument.\n * @param {boolean=} opt_capture In DOM-compliant browsers, this determines\n *     whether the listener is fired during the capture or bubble phase\n *     of the event.\n * @param {Object=} opt_handlerScope Object in whose scope to call\n *     the listener.\n * @deprecated Use `#unlisten` instead, when possible. Otherwise, use\n *     `goog.events.unlisten` if you are passing Object\n *     (instead of Function) as handler.\n */\ngoog.events.EventTarget.prototype.removeEventListener = function(\n    type, handler, opt_capture, opt_handlerScope) {\n  'use strict';\n  goog.events.unlisten(this, type, handler, opt_capture, opt_handlerScope);\n};\n\n\n/**\n * @param {?goog.events.EventLike} e Event object.\n * @return {boolean} If anyone called preventDefault on the event object (or\n *     if any of the listeners returns false) this will also return false.\n * @override\n */\ngoog.events.EventTarget.prototype.dispatchEvent = function(e) {\n  'use strict';\n  this.assertInitialized_();\n\n  var ancestorsTree, ancestor = this.getParentEventTarget();\n  if (ancestor) {\n    ancestorsTree = [];\n    var ancestorCount = 1;\n    for (; ancestor; ancestor = ancestor.getParentEventTarget()) {\n      ancestorsTree.push(ancestor);\n      goog.asserts.assert(\n          (++ancestorCount < goog.events.EventTarget.MAX_ANCESTORS_),\n          'infinite loop');\n    }\n  }\n\n  return goog.events.EventTarget.dispatchEventInternal_(\n      this.actualEventTarget_, e, ancestorsTree);\n};\n\n\n/**\n * Removes listeners from this object.  Classes that extend EventTarget may\n * need to override this method in order to remove references to DOM Elements\n * and additional listeners.\n * @override\n * @protected\n */\ngoog.events.EventTarget.prototype.disposeInternal = function() {\n  'use strict';\n  goog.events.EventTarget.superClass_.disposeInternal.call(this);\n\n  this.removeAllListeners();\n  this.parentEventTarget_ = null;\n};\n\n\n/**\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The event type id.\n * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener Callback\n *     method.\n * @param {boolean=} opt_useCapture Whether to fire in capture phase\n *     (defaults to false).\n * @param {SCOPE=} opt_listenerScope Object in whose scope to call the\n *     listener.\n * @return {!goog.events.ListenableKey} Unique key for the listener.\n * @template SCOPE,EVENTOBJ\n * @override\n */\ngoog.events.EventTarget.prototype.listen = function(\n    type, listener, opt_useCapture, opt_listenerScope) {\n  'use strict';\n  this.assertInitialized_();\n  return this.eventTargetListeners_.add(\n      String(type), listener, false /* callOnce */, opt_useCapture,\n      opt_listenerScope);\n};\n\n\n/**\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The event type id.\n * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener Callback\n *     method.\n * @param {boolean=} opt_useCapture Whether to fire in capture phase\n *     (defaults to false).\n * @param {SCOPE=} opt_listenerScope Object in whose scope to call the\n *     listener.\n * @return {!goog.events.ListenableKey} Unique key for the listener.\n * @template SCOPE,EVENTOBJ\n * @override\n */\ngoog.events.EventTarget.prototype.listenOnce = function(\n    type, listener, opt_useCapture, opt_listenerScope) {\n  'use strict';\n  return this.eventTargetListeners_.add(\n      String(type), listener, true /* callOnce */, opt_useCapture,\n      opt_listenerScope);\n};\n\n\n/**\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The event type id.\n * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener Callback\n *     method.\n * @param {boolean=} opt_useCapture Whether to fire in capture phase\n *     (defaults to false).\n * @param {SCOPE=} opt_listenerScope Object in whose scope to call\n *     the listener.\n * @return {boolean} Whether any listener was removed.\n * @template SCOPE,EVENTOBJ\n * @override\n */\ngoog.events.EventTarget.prototype.unlisten = function(\n    type, listener, opt_useCapture, opt_listenerScope) {\n  'use strict';\n  return this.eventTargetListeners_.remove(\n      String(type), listener, opt_useCapture, opt_listenerScope);\n};\n\n\n/**\n * @param {!goog.events.ListenableKey} key The key returned by\n *     listen() or listenOnce().\n * @return {boolean} Whether any listener was removed.\n * @override\n */\ngoog.events.EventTarget.prototype.unlistenByKey = function(key) {\n  'use strict';\n  return this.eventTargetListeners_.removeByKey(key);\n};\n\n\n/**\n * @param {string|!goog.events.EventId=} opt_type Type of event to remove,\n *     default is to remove all types.\n * @return {number} Number of listeners removed.\n * @override\n */\ngoog.events.EventTarget.prototype.removeAllListeners = function(opt_type) {\n  'use strict';\n  // TODO(chrishenry): Previously, removeAllListeners can be called on\n  // uninitialized EventTarget, so we preserve that behavior. We\n  // should remove this when usages that rely on that fact are purged.\n  if (!this.eventTargetListeners_) {\n    return 0;\n  }\n  return this.eventTargetListeners_.removeAll(opt_type);\n};\n\n\n/**\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The type of the\n *     listeners to fire.\n * @param {boolean} capture The capture mode of the listeners to fire.\n * @param {EVENTOBJ} eventObject The event object to fire.\n * @return {boolean} Whether all listeners succeeded without\n *     attempting to prevent default behavior. If any listener returns\n *     false or called goog.events.Event#preventDefault, this returns\n *     false.\n * @template EVENTOBJ\n * @override\n */\ngoog.events.EventTarget.prototype.fireListeners = function(\n    type, capture, eventObject) {\n  'use strict';\n  // TODO(chrishenry): Original code avoids array creation when there\n  // is no listener, so we do the same. If this optimization turns\n  // out to be not required, we can replace this with\n  // getListeners(type, capture) instead, which is simpler.\n  var listenerArray = this.eventTargetListeners_.listeners[String(type)];\n  if (!listenerArray) {\n    return true;\n  }\n  listenerArray = listenerArray.concat();\n\n  var rv = true;\n  for (var i = 0; i < listenerArray.length; ++i) {\n    var listener = listenerArray[i];\n    // We might not have a listener if the listener was removed.\n    if (listener && !listener.removed && listener.capture == capture) {\n      var listenerFn = listener.listener;\n      var listenerHandler = listener.handler || listener.src;\n\n      if (listener.callOnce) {\n        this.unlistenByKey(listener);\n      }\n      rv = listenerFn.call(listenerHandler, eventObject) !== false && rv;\n    }\n  }\n\n  return rv && !eventObject.defaultPrevented;\n};\n\n\n/**\n * @param {string|!goog.events.EventId} type The type of the listeners to fire.\n * @param {boolean} capture The capture mode of the listeners to fire.\n * @return {!Array<!goog.events.ListenableKey>} An array of registered\n *     listeners.\n * @template EVENTOBJ\n * @override\n */\ngoog.events.EventTarget.prototype.getListeners = function(type, capture) {\n  'use strict';\n  return this.eventTargetListeners_.getListeners(String(type), capture);\n};\n\n\n/**\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The name of the event\n *     without the 'on' prefix.\n * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener The\n *     listener function to get.\n * @param {boolean} capture Whether the listener is a capturing listener.\n * @param {SCOPE=} opt_listenerScope Object in whose scope to call the\n *     listener.\n * @return {?goog.events.ListenableKey} the found listener or null if not found.\n * @template SCOPE,EVENTOBJ\n * @override\n */\ngoog.events.EventTarget.prototype.getListener = function(\n    type, listener, capture, opt_listenerScope) {\n  'use strict';\n  return this.eventTargetListeners_.getListener(\n      String(type), listener, capture, opt_listenerScope);\n};\n\n\n/**\n * @param {string|!goog.events.EventId<EVENTOBJ>=} opt_type Event type.\n * @param {boolean=} opt_capture Whether to check for capture or bubble\n *     listeners.\n * @return {boolean} Whether there is any active listeners matching\n *     the requested type and/or capture phase.\n * @template EVENTOBJ\n * @override\n */\ngoog.events.EventTarget.prototype.hasListener = function(\n    opt_type, opt_capture) {\n  'use strict';\n  var id = (opt_type !== undefined) ? String(opt_type) : undefined;\n  return this.eventTargetListeners_.hasListener(id, opt_capture);\n};\n\n\n/**\n * Sets the target to be used for `event.target` when firing\n * event. Mainly used for testing. For example, see\n * `goog.testing.events.mixinListenable`.\n * @param {!Object} target The target.\n */\ngoog.events.EventTarget.prototype.setTargetForTesting = function(target) {\n  'use strict';\n  this.actualEventTarget_ = target;\n};\n\n\n/**\n * Asserts that the event target instance is initialized properly.\n * @private\n */\ngoog.events.EventTarget.prototype.assertInitialized_ = function() {\n  'use strict';\n  goog.asserts.assert(\n      this.eventTargetListeners_,\n      'Event target is not initialized. Did you call the superclass ' +\n          '(goog.events.EventTarget) constructor?');\n};\n\n\n/**\n * Dispatches the given event on the ancestorsTree.\n *\n * @param {!Object} target The target to dispatch on.\n * @param {goog.events.Event|Object|string} e The event object.\n * @param {Array<goog.events.Listenable>=} opt_ancestorsTree The ancestors\n *     tree of the target, in reverse order from the closest ancestor\n *     to the root event target. May be null if the target has no ancestor.\n * @return {boolean} If anyone called preventDefault on the event object (or\n *     if any of the listeners returns false) this will also return false.\n * @private\n */\ngoog.events.EventTarget.dispatchEventInternal_ = function(\n    target, e, opt_ancestorsTree) {\n  'use strict';\n  /** @suppress {missingProperties} */\n  var type = e.type || /** @type {string} */ (e);\n\n  // If accepting a string or object, create a custom event object so that\n  // preventDefault and stopPropagation work with the event.\n  if (typeof e === 'string') {\n    e = new goog.events.Event(e, target);\n  } else if (!(e instanceof goog.events.Event)) {\n    var oldEvent = e;\n    e = new goog.events.Event(type, target);\n    goog.object.extend(e, oldEvent);\n  } else {\n    e.target = e.target || target;\n  }\n\n  var rv = true, currentTarget;\n\n  // Executes all capture listeners on the ancestors, if any.\n  if (opt_ancestorsTree) {\n    for (var i = opt_ancestorsTree.length - 1;\n         !e.hasPropagationStopped() && i >= 0; i--) {\n      currentTarget = e.currentTarget = opt_ancestorsTree[i];\n      rv = currentTarget.fireListeners(type, true, e) && rv;\n    }\n  }\n\n  // Executes capture and bubble listeners on the target.\n  if (!e.hasPropagationStopped()) {\n    currentTarget = /** @type {?} */ (e.currentTarget = target);\n    rv = currentTarget.fireListeners(type, true, e) && rv;\n    if (!e.hasPropagationStopped()) {\n      rv = currentTarget.fireListeners(type, false, e) && rv;\n    }\n  }\n\n  // Executes all bubble listeners on the ancestors, if any.\n  if (opt_ancestorsTree) {\n    for (i = 0; !e.hasPropagationStopped() && i < opt_ancestorsTree.length;\n         i++) {\n      currentTarget = e.currentTarget = opt_ancestorsTree[i];\n      rv = currentTarget.fireListeners(type, false, e) && rv;\n    }\n  }\n\n  return rv;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview JSON utility functions.\n */\n\n\ngoog.provide('goog.json');\ngoog.provide('goog.json.Replacer');\ngoog.provide('goog.json.Reviver');\ngoog.provide('goog.json.Serializer');\n\n\n/**\n * @define {boolean} If true, use the native JSON parsing API.\n * NOTE: The default `goog.json.parse` implementation is able to handle\n * invalid JSON. JSPB used to produce invalid JSON which is not the case\n * anymore so this is safe to enable for parsing JSPB. Using native JSON is\n * faster and safer than the default implementation using `eval`.\n */\ngoog.json.USE_NATIVE_JSON = goog.define('goog.json.USE_NATIVE_JSON', false);\n\n/**\n * @define {boolean} If true, try the native JSON parsing API first. If it\n * fails, log an error and use `eval` instead. This is useful when\n * transitioning to `goog.json.USE_NATIVE_JSON`. The error logger needs to\n * be set by `goog.json.setErrorLogger`. If it is not set then the error\n * is ignored.\n */\ngoog.json.TRY_NATIVE_JSON = goog.define('goog.json.TRY_NATIVE_JSON', false);\n\n\n/**\n * Tests if a string is an invalid JSON string. This only ensures that we are\n * not using any invalid characters\n * @param {string} s The string to test.\n * @return {boolean} True if the input is a valid JSON string.\n */\ngoog.json.isValid = function(s) {\n  'use strict';\n  // All empty whitespace is not valid.\n  if (/^\\s*$/.test(s)) {\n    return false;\n  }\n\n  // This is taken from http://www.json.org/json2.js which is released to the\n  // public domain.\n  // Changes: We dissallow \\u2028 Line separator and \\u2029 Paragraph separator\n  // inside strings.  We also treat \\u2028 and \\u2029 as whitespace which they\n  // are in the RFC but IE and Safari does not match \\s to these so we need to\n  // include them in the reg exps in all places where whitespace is allowed.\n  // We allowed \\x7f inside strings because some tools don't escape it,\n  // e.g. http://www.json.org/java/org/json/JSONObject.java\n\n  // Parsing happens in three stages. In the first stage, we run the text\n  // against regular expressions that look for non-JSON patterns. We are\n  // especially concerned with '()' and 'new' because they can cause invocation,\n  // and '=' because it can cause mutation. But just to be safe, we want to\n  // reject all unexpected forms.\n\n  // We split the first stage into 4 regexp operations in order to work around\n  // crippling inefficiencies in IE's and Safari's regexp engines. First we\n  // replace all backslash pairs with '@' (a non-JSON character). Second, we\n  // replace all simple value tokens with ']' characters, but only when followed\n  // by a colon, comma, closing bracket or end of string. Third, we delete all\n  // open brackets that follow a colon or comma or that begin the text. Finally,\n  // we look to see that the remaining characters are only whitespace or ']' or\n  // ',' or ':' or '{' or '}'. If that is so, then the text is safe for eval.\n\n  // Don't make these static since they have the global flag.\n  const backslashesRe = /\\\\[\"\\\\\\/bfnrtu]/g;\n  const simpleValuesRe =\n      /(?:\"[^\"\\\\\\n\\r\\u2028\\u2029\\x00-\\x08\\x0a-\\x1f]*\"|true|false|null|-?\\d+(?:\\.\\d*)?(?:[eE][+\\-]?\\d+)?)[\\s\\u2028\\u2029]*(?=:|,|]|}|$)/g;\n  const openBracketsRe = /(?:^|:|,)(?:[\\s\\u2028\\u2029]*\\[)+/g;\n  const remainderRe = /^[\\],:{}\\s\\u2028\\u2029]*$/;\n\n  return remainderRe.test(\n      s.replace(backslashesRe, '@')\n          .replace(simpleValuesRe, ']')\n          .replace(openBracketsRe, ''));\n};\n\n/**\n * Logs a parsing error in `JSON.parse` solvable by using `eval`\n * if `goog.json.TRY_NATIVE_JSON` is enabled.\n * @private {function(string, !Error)} The first parameter is the error message,\n *     the second is the exception thrown by `JSON.parse`.\n */\ngoog.json.errorLogger_ = goog.nullFunction;\n\n\n/**\n * Sets an error logger to use if there's a recoverable parsing error and\n * `goog.json.TRY_NATIVE_JSON` is enabled.\n * @param {function(string, !Error)} errorLogger The first parameter is the\n *     error message, the second is the exception thrown by `JSON.parse`.\n */\ngoog.json.setErrorLogger = function(errorLogger) {\n  'use strict';\n  goog.json.errorLogger_ = errorLogger;\n};\n\n\n/**\n * Parses a JSON string and returns the result. This throws an exception if\n * the string is an invalid JSON string.\n *\n * Note that this is very slow on large strings. Use JSON.parse if possible.\n *\n * @param {*} s The JSON string to parse.\n * @throws Error if s is invalid JSON.\n * @return {Object} The object generated from the JSON string, or null.\n * @deprecated Use JSON.parse.\n */\ngoog.json.parse = goog.json.USE_NATIVE_JSON ?\n    /** @type {function(*):Object} */ (goog.global['JSON']['parse']) :\n    function(s) {\n      'use strict';\n      let error;\n      if (goog.json.TRY_NATIVE_JSON) {\n        try {\n          return goog.global['JSON']['parse'](s);\n        } catch (ex) {\n          error = ex;\n        }\n      }\n      const o = String(s);\n      if (goog.json.isValid(o)) {\n\n        try {\n          const result = /** @type {?Object} */ (eval('(' + o + ')'));\n          if (error) {\n            goog.json.errorLogger_('Invalid JSON: ' + o, error);\n          }\n          return result;\n        } catch (ex) {\n        }\n      }\n      throw new Error('Invalid JSON string: ' + o);\n    };\n\n\n/**\n * JSON replacer, as defined in Section 15.12.3 of the ES5 spec.\n * @see http://ecma-international.org/ecma-262/5.1/#sec-15.12.3\n *\n * TODO(nicksantos): Array should also be a valid replacer.\n *\n * @typedef {function(this:Object, string, *): *}\n */\ngoog.json.Replacer;\n\n\n/**\n * JSON reviver, as defined in Section 15.12.2 of the ES5 spec.\n * @see http://ecma-international.org/ecma-262/5.1/#sec-15.12.3\n *\n * @typedef {function(this:Object, string, *): *}\n */\ngoog.json.Reviver;\n\n\n/**\n * Serializes an object or a value to a JSON string.\n *\n * @param {*} object The object to serialize.\n * @param {?goog.json.Replacer=} opt_replacer A replacer function\n *     called for each (key, value) pair that determines how the value\n *     should be serialized. By defult, this just returns the value\n *     and allows default serialization to kick in.\n * @throws Error if there are loops in the object graph.\n * @return {string} A JSON string representation of the input.\n */\ngoog.json.serialize = goog.json.USE_NATIVE_JSON ?\n    /** @type {function(*, ?goog.json.Replacer=):string} */\n    (goog.global['JSON']['stringify']) :\n    function(object, opt_replacer) {\n      'use strict';\n      // NOTE(nicksantos): Currently, we never use JSON.stringify.\n      //\n      // The last time I evaluated this, JSON.stringify had subtle bugs and\n      // behavior differences on all browsers, and the performance win was not\n      // large enough to justify all the issues. This may change in the future\n      // as browser implementations get better.\n      //\n      // assertSerialize in json_test contains if branches for the cases\n      // that fail.\n      return new goog.json.Serializer(opt_replacer).serialize(object);\n    };\n\n\n\n/**\n * Class that is used to serialize JSON objects to a string.\n * @param {?goog.json.Replacer=} opt_replacer Replacer.\n * @constructor\n */\ngoog.json.Serializer = function(opt_replacer) {\n  'use strict';\n  /**\n   * @type {goog.json.Replacer|null|undefined}\n   * @private\n   */\n  this.replacer_ = opt_replacer;\n};\n\n\n/**\n * Serializes an object or a value to a JSON string.\n *\n * @param {*} object The object to serialize.\n * @throws Error if there are loops in the object graph.\n * @return {string} A JSON string representation of the input.\n */\ngoog.json.Serializer.prototype.serialize = function(object) {\n  'use strict';\n  const sb = [];\n  this.serializeInternal(object, sb);\n  return sb.join('');\n};\n\n\n/**\n * Serializes a generic value to a JSON string\n * @protected\n * @param {*} object The object to serialize.\n * @param {Array<string>} sb Array used as a string builder.\n * @throws Error if there are loops in the object graph.\n */\ngoog.json.Serializer.prototype.serializeInternal = function(object, sb) {\n  'use strict';\n  if (object == null) {\n    // undefined == null so this branch covers undefined as well as null\n    sb.push('null');\n    return;\n  }\n\n  if (typeof object == 'object') {\n    if (Array.isArray(object)) {\n      this.serializeArray(object, sb);\n      return;\n    } else if (\n        object instanceof String || object instanceof Number ||\n        object instanceof Boolean) {\n      object = object.valueOf();\n      // Fall through to switch below.\n    } else {\n      this.serializeObject_(/** @type {!Object} */ (object), sb);\n      return;\n    }\n  }\n\n  switch (typeof object) {\n    case 'string':\n      this.serializeString_(object, sb);\n      break;\n    case 'number':\n      this.serializeNumber_(object, sb);\n      break;\n    case 'boolean':\n      sb.push(String(object));\n      break;\n    case 'function':\n      sb.push('null');\n      break;\n    default:\n      throw new Error('Unknown type: ' + typeof object);\n  }\n};\n\n\n/**\n * Character mappings used internally for goog.string.quote\n * @private\n * @type {!Object}\n */\ngoog.json.Serializer.charToJsonCharCache_ = {\n  '\\\"': '\\\\\"',\n  '\\\\': '\\\\\\\\',\n  '/': '\\\\/',\n  '\\b': '\\\\b',\n  '\\f': '\\\\f',\n  '\\n': '\\\\n',\n  '\\r': '\\\\r',\n  '\\t': '\\\\t',\n\n  '\\x0B': '\\\\u000b'  // '\\v' is not supported in JScript\n};\n\n\n/**\n * Regular expression used to match characters that need to be replaced.\n * The S60 browser has a bug where unicode characters are not matched by\n * regular expressions. The condition below detects such behaviour and\n * adjusts the regular expression accordingly.\n * @private\n * @type {!RegExp}\n */\ngoog.json.Serializer.charsToReplace_ = /\\uffff/.test('\\uffff') ?\n    /[\\\\\\\"\\x00-\\x1f\\x7f-\\uffff]/g :\n    /[\\\\\\\"\\x00-\\x1f\\x7f-\\xff]/g;\n\n\n/**\n * Serializes a string to a JSON string\n * @private\n * @param {string} s The string to serialize.\n * @param {Array<string>} sb Array used as a string builder.\n */\ngoog.json.Serializer.prototype.serializeString_ = function(s, sb) {\n  'use strict';\n  // The official JSON implementation does not work with international\n  // characters.\n  sb.push('\"', s.replace(goog.json.Serializer.charsToReplace_, function(c) {\n    'use strict';\n    // caching the result improves performance by a factor 2-3\n    let rv = goog.json.Serializer.charToJsonCharCache_[c];\n    if (!rv) {\n      rv = '\\\\u' + (c.charCodeAt(0) | 0x10000).toString(16).substr(1);\n      goog.json.Serializer.charToJsonCharCache_[c] = rv;\n    }\n    return rv;\n  }), '\"');\n};\n\n\n/**\n * Serializes a number to a JSON string\n * @private\n * @param {number} n The number to serialize.\n * @param {Array<string>} sb Array used as a string builder.\n */\ngoog.json.Serializer.prototype.serializeNumber_ = function(n, sb) {\n  'use strict';\n  sb.push(isFinite(n) && !isNaN(n) ? String(n) : 'null');\n};\n\n\n/**\n * Serializes an array to a JSON string\n * @param {Array<string>} arr The array to serialize.\n * @param {Array<string>} sb Array used as a string builder.\n * @protected\n */\ngoog.json.Serializer.prototype.serializeArray = function(arr, sb) {\n  'use strict';\n  const l = arr.length;\n  sb.push('[');\n  let sep = '';\n  for (let i = 0; i < l; i++) {\n    sb.push(sep);\n\n    const value = arr[i];\n    this.serializeInternal(\n        this.replacer_ ? this.replacer_.call(arr, String(i), value) : value,\n        sb);\n\n    sep = ',';\n  }\n  sb.push(']');\n};\n\n\n/**\n * Serializes an object to a JSON string\n * @private\n * @param {!Object} obj The object to serialize.\n * @param {Array<string>} sb Array used as a string builder.\n */\ngoog.json.Serializer.prototype.serializeObject_ = function(obj, sb) {\n  'use strict';\n  sb.push('{');\n  let sep = '';\n  for (const key in obj) {\n    if (Object.prototype.hasOwnProperty.call(obj, key)) {\n      const value = obj[key];\n      // Skip functions.\n      if (typeof value != 'function') {\n        sb.push(sep);\n        this.serializeString_(key, sb);\n        sb.push(':');\n\n        this.serializeInternal(\n            this.replacer_ ? this.replacer_.call(obj, key, value) : value, sb);\n\n        sep = ',';\n      }\n    }\n  }\n  sb.push('}');\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\ngoog.provide('goog.async.WorkItem');\ngoog.provide('goog.async.WorkQueue');\n\ngoog.require('goog.asserts');\ngoog.require('goog.async.FreeList');\n\n\n// TODO(johnlenz): generalize the WorkQueue if this is used by more\n// than goog.async.run.\n\n\n\n/**\n * A low GC workqueue. The key elements of this design:\n *   - avoids the need for goog.bind or equivalent by carrying scope\n *   - avoids the need for array reallocation by using a linked list\n *   - minimizes work entry objects allocation by recycling objects\n * @constructor\n * @final\n * @struct\n */\ngoog.async.WorkQueue = function() {\n  'use strict';\n  this.workHead_ = null;\n  this.workTail_ = null;\n};\n\n\n/** @define {number} The maximum number of entries to keep for recycling. */\ngoog.async.WorkQueue.DEFAULT_MAX_UNUSED =\n    goog.define('goog.async.WorkQueue.DEFAULT_MAX_UNUSED', 100);\n\n\n/** @const @private {goog.async.FreeList<goog.async.WorkItem>} */\ngoog.async.WorkQueue.freelist_ = new goog.async.FreeList(\n    function() {\n      'use strict';\n      return new goog.async.WorkItem();\n    },\n    function(item) {\n      'use strict';\n      item.reset();\n    },\n    goog.async.WorkQueue.DEFAULT_MAX_UNUSED);\n\n\n/**\n * @param {function()} fn\n * @param {Object|null|undefined} scope\n */\ngoog.async.WorkQueue.prototype.add = function(fn, scope) {\n  'use strict';\n  var item = this.getUnusedItem_();\n  item.set(fn, scope);\n\n  if (this.workTail_) {\n    this.workTail_.next = item;\n    this.workTail_ = item;\n  } else {\n    goog.asserts.assert(!this.workHead_);\n    this.workHead_ = item;\n    this.workTail_ = item;\n  }\n};\n\n\n/**\n * @return {goog.async.WorkItem}\n */\ngoog.async.WorkQueue.prototype.remove = function() {\n  'use strict';\n  var item = null;\n\n  if (this.workHead_) {\n    item = this.workHead_;\n    this.workHead_ = this.workHead_.next;\n    if (!this.workHead_) {\n      this.workTail_ = null;\n    }\n    item.next = null;\n  }\n  return item;\n};\n\n\n/**\n * @param {goog.async.WorkItem} item\n */\ngoog.async.WorkQueue.prototype.returnUnused = function(item) {\n  'use strict';\n  goog.async.WorkQueue.freelist_.put(item);\n};\n\n\n/**\n * @return {goog.async.WorkItem}\n * @private\n */\ngoog.async.WorkQueue.prototype.getUnusedItem_ = function() {\n  'use strict';\n  return goog.async.WorkQueue.freelist_.get();\n};\n\n\n\n/**\n * @constructor\n * @final\n * @struct\n */\ngoog.async.WorkItem = function() {\n  'use strict';\n  /** @type {?function()} */\n  this.fn = null;\n  /** @type {?Object|null|undefined} */\n  this.scope = null;\n  /** @type {?goog.async.WorkItem} */\n  this.next = null;\n};\n\n\n/**\n * @param {function()} fn\n * @param {Object|null|undefined} scope\n */\ngoog.async.WorkItem.prototype.set = function(fn, scope) {\n  'use strict';\n  this.fn = fn;\n  this.scope = scope;\n  this.next = null;\n};\n\n\n/** Reset the work item so they don't prevent GC before reuse */\ngoog.async.WorkItem.prototype.reset = function() {\n  'use strict';\n  this.fn = null;\n  this.scope = null;\n  this.next = null;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\ngoog.provide('goog.async.run');\n\ngoog.require('goog.async.WorkQueue');\ngoog.require('goog.async.nextTick');\ngoog.require('goog.async.throwException');\n\n/**\n * @define {boolean} If true, use the global Promise to implement goog.async.run\n * assuming either the native, or polyfill version will be used. Does still\n * permit tests to use forceNextTick.\n */\ngoog.ASSUME_NATIVE_PROMISE = goog.define('goog.ASSUME_NATIVE_PROMISE', false);\n\n/**\n * Fires the provided callback just before the current callstack unwinds, or as\n * soon as possible after the current JS execution context.\n * @param {function(this:THIS)} callback\n * @param {THIS=} opt_context Object to use as the \"this value\" when calling\n *     the provided function.\n * @template THIS\n */\ngoog.async.run = function(callback, opt_context) {\n  'use strict';\n  if (!goog.async.run.schedule_) {\n    goog.async.run.initializeRunner_();\n  }\n  if (!goog.async.run.workQueueScheduled_) {\n    // Nothing is currently scheduled, schedule it now.\n    goog.async.run.schedule_();\n    goog.async.run.workQueueScheduled_ = true;\n  }\n\n  goog.async.run.workQueue_.add(callback, opt_context);\n};\n\n\n/**\n * Initializes the function to use to process the work queue.\n * @private\n */\ngoog.async.run.initializeRunner_ = function() {\n  'use strict';\n  if (goog.ASSUME_NATIVE_PROMISE ||\n      (goog.global.Promise && goog.global.Promise.resolve)) {\n    // Use goog.global.Promise instead of just Promise because the relevant\n    // externs may be missing, and don't alias it because this could confuse the\n    // compiler into thinking the polyfill is required when it should be treated\n    // as optional.\n    var promise = goog.global.Promise.resolve(undefined);\n    goog.async.run.schedule_ = function() {\n      'use strict';\n      promise.then(goog.async.run.processWorkQueue);\n    };\n  } else {\n    goog.async.run.schedule_ = function() {\n      'use strict';\n      goog.async.nextTick(goog.async.run.processWorkQueue);\n    };\n  }\n};\n\n\n/**\n * Forces goog.async.run to use nextTick instead of Promise.\n *\n * This should only be done in unit tests. It's useful because MockClock\n * replaces nextTick, but not the browser Promise implementation, so it allows\n * Promise-based code to be tested with MockClock.\n *\n * However, we also want to run promises if the MockClock is no longer in\n * control so we schedule a backup \"setTimeout\" to the unmocked timeout if\n * provided.\n *\n * @param {function(function())=} opt_realSetTimeout\n */\ngoog.async.run.forceNextTick = function(opt_realSetTimeout) {\n  'use strict';\n  goog.async.run.schedule_ = function() {\n    'use strict';\n    goog.async.nextTick(goog.async.run.processWorkQueue);\n    if (opt_realSetTimeout) {\n      opt_realSetTimeout(goog.async.run.processWorkQueue);\n    }\n  };\n};\n\n\n/**\n * The function used to schedule work asynchronousely.\n * @private {function()}\n */\ngoog.async.run.schedule_;\n\n\n/** @private {boolean} */\ngoog.async.run.workQueueScheduled_ = false;\n\n\n/** @private {!goog.async.WorkQueue} */\ngoog.async.run.workQueue_ = new goog.async.WorkQueue();\n\n\nif (goog.DEBUG) {\n  /**\n   * Reset the work queue. Only available for tests in debug mode.\n   */\n  goog.async.run.resetQueue = function() {\n    'use strict';\n    goog.async.run.workQueueScheduled_ = false;\n    goog.async.run.workQueue_ = new goog.async.WorkQueue();\n  };\n}\n\n\n/**\n * Run any pending goog.async.run work items. This function is not intended\n * for general use, but for use by entry point handlers to run items ahead of\n * goog.async.nextTick.\n */\ngoog.async.run.processWorkQueue = function() {\n  'use strict';\n  // NOTE: additional work queue items may be added while processing.\n  var item = null;\n  while (item = goog.async.run.workQueue_.remove()) {\n    try {\n      item.fn.call(item.scope);\n    } catch (e) {\n      goog.async.throwException(e);\n    }\n    goog.async.run.workQueue_.returnUnused(item);\n  }\n\n  // There are no more work items, allow processing to be scheduled again.\n  goog.async.run.workQueueScheduled_ = false;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Simple freelist.\n *\n * An anterative to goog.structs.SimplePool, it imposes the requirement that the\n * objects in the list contain a \"next\" property that can be used to maintain\n * the pool.\n */\n\ngoog.provide('goog.async.FreeList');\n\n\n/**\n * @template ITEM\n */\ngoog.async.FreeList = class {\n  /**\n   * @param {function():ITEM} create\n   * @param {function(ITEM):void} reset\n   * @param {number} limit\n   */\n  constructor(create, reset, limit) {\n    /** @private @const {number} */\n    this.limit_ = limit;\n    /** @private @const {function()} */\n    this.create_ = create;\n    /** @private @const {function(ITEM):void} */\n    this.reset_ = reset;\n\n    /** @private {number} */\n    this.occupants_ = 0;\n    /** @private {ITEM} */\n    this.head_ = null;\n  }\n\n  /**\n   * @return {ITEM}\n   */\n  get() {\n    let item;\n    if (this.occupants_ > 0) {\n      this.occupants_--;\n      item = this.head_;\n      this.head_ = item.next;\n      item.next = null;\n    } else {\n      item = this.create_();\n    }\n    return item;\n  }\n\n  /**\n   * @param {ITEM} item An item available for possible future reuse.\n   */\n  put(item) {\n    this.reset_(item);\n    if (this.occupants_ < this.limit_) {\n      this.occupants_++;\n      item.next = this.head_;\n      this.head_ = item;\n    }\n  }\n\n  /**\n   * Visible for testing.\n   * @package\n   * @return {number}\n   */\n  occupants() {\n    return this.occupants_;\n  }\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Provides a function to schedule running a function as soon\n * as possible after the current JS execution stops and yields to the event\n * loop.\n */\n\ngoog.provide('goog.async.nextTick');\ngoog.provide('goog.async.throwException');\n\ngoog.require('goog.debug.entryPointRegistry');\ngoog.require('goog.dom');\ngoog.require('goog.dom.TagName');\ngoog.require('goog.functions');\ngoog.require('goog.labs.userAgent.browser');\ngoog.require('goog.labs.userAgent.engine');\n\n\n/**\n * Throw an item without interrupting the current execution context.  For\n * example, if processing a group of items in a loop, sometimes it is useful\n * to report an error while still allowing the rest of the batch to be\n * processed.\n * @param {*} exception\n */\ngoog.async.throwException = function(exception) {\n  'use strict';\n  // Each throw needs to be in its own context.\n  goog.global.setTimeout(function() {\n    'use strict';\n    throw exception;\n  }, 0);\n};\n\n\n/**\n * Fires the provided callbacks as soon as possible after the current JS\n * execution context. setTimeout(…, 0) takes at least 4ms when called from\n * within another setTimeout(…, 0) for legacy reasons.\n *\n * This will not schedule the callback as a microtask (i.e. a task that can\n * preempt user input or networking callbacks). It is meant to emulate what\n * setTimeout(_, 0) would do if it were not throttled. If you desire microtask\n * behavior, use {@see goog.Promise} instead.\n *\n * @param {function(this:SCOPE)} callback Callback function to fire as soon as\n *     possible.\n * @param {SCOPE=} opt_context Object in whose scope to call the listener.\n * @param {boolean=} opt_useSetImmediate Avoid the IE workaround that\n *     ensures correctness at the cost of speed. See comments for details.\n * @template SCOPE\n */\ngoog.async.nextTick = function(callback, opt_context, opt_useSetImmediate) {\n  'use strict';\n  var cb = callback;\n  if (opt_context) {\n    cb = goog.bind(callback, opt_context);\n  }\n  cb = goog.async.nextTick.wrapCallback_(cb);\n  // Note we do allow callers to also request setImmediate if they are willing\n  // to accept the possible tradeoffs of incorrectness in exchange for speed.\n  // The IE fallback of readystate change is much slower. See useSetImmediate_\n  // for details.\n  if (typeof goog.global.setImmediate === 'function' &&\n      (opt_useSetImmediate || goog.async.nextTick.useSetImmediate_())) {\n    goog.global.setImmediate(cb);\n    return;\n  }\n\n  // Look for and cache the custom fallback version of setImmediate.\n  if (!goog.async.nextTick.setImmediate_) {\n    goog.async.nextTick.setImmediate_ =\n        goog.async.nextTick.getSetImmediateEmulator_();\n  }\n  goog.async.nextTick.setImmediate_(cb);\n};\n\n\n/**\n * Returns whether should use setImmediate implementation currently on window.\n *\n * window.setImmediate was introduced and currently only supported by IE10+,\n * but due to a bug in the implementation it is not guaranteed that\n * setImmediate is faster than setTimeout nor that setImmediate N is before\n * setImmediate N+1. That is why we do not use the native version if\n * available. We do, however, call setImmediate if it is a non-native function\n * because that indicates that it has been replaced by goog.testing.MockClock\n * which we do want to support.\n * See\n * http://connect.microsoft.com/IE/feedback/details/801823/setimmediate-and-messagechannel-are-broken-in-ie10\n *\n * @return {boolean} Whether to use the implementation of setImmediate defined\n *     on Window.\n * @private\n * @suppress {missingProperties} For \"Window.prototype.setImmediate\"\n */\ngoog.async.nextTick.useSetImmediate_ = function() {\n  'use strict';\n  // Not a browser environment.\n  if (!goog.global.Window || !goog.global.Window.prototype) {\n    return true;\n  }\n\n  // MS Edge has window.setImmediate natively, but it's not on Window.prototype.\n  // Also, there's no clean way to detect if the goog.global.setImmediate has\n  // been replaced by mockClock as its replacement also shows up as \"[native\n  // code]\" when using toString. Therefore, just always use\n  // goog.global.setImmediate for Edge. It's unclear if it suffers the same\n  // issues as IE10/11, but based on\n  // https://dev.modern.ie/testdrive/demos/setimmediatesorting/\n  // it seems they've been working to ensure it's WAI.\n  if (goog.labs.userAgent.browser.isEdge() ||\n      goog.global.Window.prototype.setImmediate != goog.global.setImmediate) {\n    // Something redefined setImmediate in which case we decide to use it (This\n    // is so that we use the mockClock setImmediate).\n    return true;\n  }\n\n  return false;\n};\n\n\n/**\n * Cache for the setImmediate implementation.\n * @type {function(function())}\n * @private\n */\ngoog.async.nextTick.setImmediate_;\n\n\n/**\n * Determines the best possible implementation to run a function as soon as\n * the JS event loop is idle.\n * @return {function(function())} The \"setImmediate\" implementation.\n * @private\n */\ngoog.async.nextTick.getSetImmediateEmulator_ = function() {\n  'use strict';\n  // Create a private message channel and use it to postMessage empty messages\n  // to ourselves.\n  /** @type {!Function|undefined} */\n  var Channel = goog.global['MessageChannel'];\n  // If MessageChannel is not available and we are in a browser, implement\n  // an iframe based polyfill in browsers that have postMessage and\n  // document.addEventListener. The latter excludes IE8 because it has a\n  // synchronous postMessage implementation.\n  if (typeof Channel === 'undefined' && typeof window !== 'undefined' &&\n      window.postMessage && window.addEventListener &&\n      // Presto (The old pre-blink Opera engine) has problems with iframes\n      // and contentWindow.\n      !goog.labs.userAgent.engine.isPresto()) {\n    /** @constructor */\n    Channel = function() {\n      'use strict';\n      // Make an empty, invisible iframe.\n      var iframe = goog.dom.createElement(goog.dom.TagName.IFRAME);\n      iframe.style.display = 'none';\n      document.documentElement.appendChild(iframe);\n      var win = iframe.contentWindow;\n      var doc = win.document;\n      doc.open();\n      doc.close();\n      // Do not post anything sensitive over this channel, as the workaround for\n      // pages with file: origin could allow that information to be modified or\n      // intercepted.\n      var message = 'callImmediate' + Math.random();\n      // The same origin policy rejects attempts to postMessage from file: urls\n      // unless the origin is '*'.\n      var origin = win.location.protocol == 'file:' ?\n          '*' :\n          win.location.protocol + '//' + win.location.host;\n      var onmessage = goog.bind(function(e) {\n        'use strict';\n        // Validate origin and message to make sure that this message was\n        // intended for us. If the origin is set to '*' (see above) only the\n        // message needs to match since, for example, '*' != 'file://'. Allowing\n        // the wildcard is ok, as we are not concerned with security here.\n        if ((origin != '*' && e.origin != origin) || e.data != message) {\n          return;\n        }\n        this['port1'].onmessage();\n      }, this);\n      win.addEventListener('message', onmessage, false);\n      this['port1'] = {};\n      this['port2'] = {\n        postMessage: function() {\n          'use strict';\n          win.postMessage(message, origin);\n        }\n      };\n    };\n  }\n  if (typeof Channel !== 'undefined' && !goog.labs.userAgent.browser.isIE()) {\n    // Exclude all of IE due to\n    // http://codeforhire.com/2013/09/21/setimmediate-and-messagechannel-broken-on-internet-explorer-10/\n    // which allows starving postMessage with a busy setTimeout loop.\n    // This currently affects IE10 and IE11 which would otherwise be able\n    // to use the postMessage based fallbacks.\n    var channel = new Channel();\n    // Use a fifo linked list to call callbacks in the right order.\n    var head = {};\n    var tail = head;\n    channel['port1'].onmessage = function() {\n      'use strict';\n      if (head.next !== undefined) {\n        head = head.next;\n        var cb = head.cb;\n        head.cb = null;\n        cb();\n      }\n    };\n    return function(cb) {\n      'use strict';\n      tail.next = {cb: cb};\n      tail = tail.next;\n      channel['port2'].postMessage(0);\n    };\n  }\n  // Fall back to setTimeout with 0. In browsers this creates a delay of 5ms\n  // or more.\n  // NOTE(user): This fallback is used for IE.\n  return function(cb) {\n    'use strict';\n    goog.global.setTimeout(/** @type {function()} */ (cb), 0);\n  };\n};\n\n\n/**\n * Helper function that is overrided to protect callbacks with entry point\n * monitor if the application monitors entry points.\n * @param {function()} callback Callback function to fire as soon as possible.\n * @return {function()} The wrapped callback.\n * @private\n */\ngoog.async.nextTick.wrapCallback_ = goog.functions.identity;\n\n\n// Register the callback function as an entry point, so that it can be\n// monitored for exception handling, etc. This has to be done in this file\n// since it requires special code to handle all browsers.\ngoog.debug.entryPointRegistry.register(\n    /**\n     * @param {function(!Function): !Function} transformer The transforming\n     *     function.\n     */\n    function(transformer) {\n      'use strict';\n      goog.async.nextTick.wrapCallback_ = transformer;\n    });\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview A timer class to which other classes and objects can listen on.\n * This is only an abstraction above `setInterval`.\n *\n * @see ../demos/timers.html\n */\n\ngoog.provide('goog.Timer');\n\ngoog.require('goog.Promise');\ngoog.require('goog.events.EventTarget');\ngoog.requireType('goog.Thenable');\n\n\n\n/**\n * Class for handling timing events.\n *\n * @param {number=} opt_interval Number of ms between ticks (default: 1ms).\n * @param {Object=} opt_timerObject  An object that has `setTimeout`,\n *     `setInterval`, `clearTimeout` and `clearInterval`\n *     (e.g., `window`).\n * @constructor\n * @extends {goog.events.EventTarget}\n */\ngoog.Timer = function(opt_interval, opt_timerObject) {\n  'use strict';\n  goog.events.EventTarget.call(this);\n\n  /**\n   * Number of ms between ticks\n   * @private {number}\n   */\n  this.interval_ = opt_interval || 1;\n\n  /**\n   * An object that implements `setTimeout`, `setInterval`,\n   * `clearTimeout` and `clearInterval`. We default to the window\n   * object. Changing this on {@link goog.Timer.prototype} changes the object\n   * for all timer instances which can be useful if your environment has some\n   * other implementation of timers than the `window` object.\n   * @private {{setTimeout:!Function, clearTimeout:!Function}}\n   */\n  this.timerObject_ = /** @type {{setTimeout, clearTimeout}} */ (\n      opt_timerObject || goog.Timer.defaultTimerObject);\n\n  /**\n   * Cached `tick_` bound to the object for later use in the timer.\n   * @private {Function}\n   * @const\n   */\n  this.boundTick_ = goog.bind(this.tick_, this);\n\n  /**\n   * Firefox browser often fires the timer event sooner (sometimes MUCH sooner)\n   * than the requested timeout. So we compare the time to when the event was\n   * last fired, and reschedule if appropriate. See also\n   * {@link goog.Timer.intervalScale}.\n   * @private {number}\n   */\n  this.last_ = goog.now();\n};\ngoog.inherits(goog.Timer, goog.events.EventTarget);\n\n\n/**\n * Maximum timeout value.\n *\n * Timeout values too big to fit into a signed 32-bit integer may cause overflow\n * in FF, Safari, and Chrome, resulting in the timeout being scheduled\n * immediately. It makes more sense simply not to schedule these timeouts, since\n * 24.8 days is beyond a reasonable expectation for the browser to stay open.\n *\n * @private {number}\n * @const\n */\ngoog.Timer.MAX_TIMEOUT_ = 2147483647;\n\n\n/**\n * A timer ID that cannot be returned by any known implementation of\n * `window.setTimeout`. Passing this value to `window.clearTimeout`\n * should therefore be a no-op.\n *\n * @private {number}\n * @const\n */\ngoog.Timer.INVALID_TIMEOUT_ID_ = -1;\n\n\n/**\n * Whether this timer is enabled\n * @type {boolean}\n */\ngoog.Timer.prototype.enabled = false;\n\n\n/**\n * An object that implements `setTimeout`, `setInterval`,\n * `clearTimeout` and `clearInterval`. We default to the global\n * object. Changing `goog.Timer.defaultTimerObject` changes the object for\n * all timer instances which can be useful if your environment has some other\n * implementation of timers you'd like to use.\n * @type {{setTimeout, clearTimeout}}\n */\ngoog.Timer.defaultTimerObject = goog.global;\n\n\n/**\n * Variable that controls the timer error correction. If the timer is called\n * before the requested interval times `intervalScale`, which often\n * happens on Mozilla, the timer is rescheduled.\n * @see {@link #last_}\n * @type {number}\n */\ngoog.Timer.intervalScale = 0.8;\n\n\n/**\n * Variable for storing the result of `setInterval`.\n * @private {?number}\n */\ngoog.Timer.prototype.timer_ = null;\n\n\n/**\n * Gets the interval of the timer.\n * @return {number} interval Number of ms between ticks.\n */\ngoog.Timer.prototype.getInterval = function() {\n  'use strict';\n  return this.interval_;\n};\n\n\n/**\n * Sets the interval of the timer.\n * @param {number} interval Number of ms between ticks.\n */\ngoog.Timer.prototype.setInterval = function(interval) {\n  'use strict';\n  this.interval_ = interval;\n  if (this.timer_ && this.enabled) {\n    // Stop and then start the timer to reset the interval.\n    this.stop();\n    this.start();\n  } else if (this.timer_) {\n    this.stop();\n  }\n};\n\n\n/**\n * Callback for the `setTimeout` used by the timer.\n * @private\n */\ngoog.Timer.prototype.tick_ = function() {\n  'use strict';\n  if (this.enabled) {\n    var elapsed = goog.now() - this.last_;\n    if (elapsed > 0 && elapsed < this.interval_ * goog.Timer.intervalScale) {\n      this.timer_ = this.timerObject_.setTimeout(\n          this.boundTick_, this.interval_ - elapsed);\n      return;\n    }\n\n    // Prevents setInterval from registering a duplicate timeout when called\n    // in the timer event handler.\n    if (this.timer_) {\n      this.timerObject_.clearTimeout(this.timer_);\n      this.timer_ = null;\n    }\n\n    this.dispatchTick();\n    // The timer could be stopped in the timer event handler.\n    if (this.enabled) {\n      // Stop and start to ensure there is always only one timeout even if\n      // start is called in the timer event handler.\n      this.stop();\n      this.start();\n    }\n  }\n};\n\n\n/**\n * Dispatches the TICK event. This is its own method so subclasses can override.\n */\ngoog.Timer.prototype.dispatchTick = function() {\n  'use strict';\n  this.dispatchEvent(goog.Timer.TICK);\n};\n\n\n/**\n * Starts the timer.\n */\ngoog.Timer.prototype.start = function() {\n  'use strict';\n  this.enabled = true;\n\n  // If there is no interval already registered, start it now\n  if (!this.timer_) {\n    // IMPORTANT!\n    // window.setInterval in FireFox has a bug - it fires based on\n    // absolute time, rather than on relative time. What this means\n    // is that if a computer is sleeping/hibernating for 24 hours\n    // and the timer interval was configured to fire every 1000ms,\n    // then after the PC wakes up the timer will fire, in rapid\n    // succession, 3600*24 times.\n    // This bug is described here and is already fixed, but it will\n    // take time to propagate, so for now I am switching this over\n    // to setTimeout logic.\n    //     https://bugzilla.mozilla.org/show_bug.cgi?id=376643\n    //\n    this.timer_ = this.timerObject_.setTimeout(this.boundTick_, this.interval_);\n    this.last_ = goog.now();\n  }\n};\n\n\n/**\n * Stops the timer.\n */\ngoog.Timer.prototype.stop = function() {\n  'use strict';\n  this.enabled = false;\n  if (this.timer_) {\n    this.timerObject_.clearTimeout(this.timer_);\n    this.timer_ = null;\n  }\n};\n\n\n/** @override */\ngoog.Timer.prototype.disposeInternal = function() {\n  'use strict';\n  goog.Timer.superClass_.disposeInternal.call(this);\n  this.stop();\n  delete this.timerObject_;\n};\n\n\n/**\n * Constant for the timer's event type.\n * @const\n */\ngoog.Timer.TICK = 'tick';\n\n\n/**\n * Calls the given function once, after the optional pause.\n * <p>\n * The function is always called asynchronously, even if the delay is 0. This\n * is a common trick to schedule a function to run after a batch of browser\n * event processing.\n *\n * @param {function(this:SCOPE)|{handleEvent:function()}|null} listener Function\n *     or object that has a handleEvent method.\n * @param {number=} opt_delay Milliseconds to wait; default is 0.\n * @param {SCOPE=} opt_handler Object in whose scope to call the listener.\n * @return {number} A handle to the timer ID.\n * @template SCOPE\n */\ngoog.Timer.callOnce = function(listener, opt_delay, opt_handler) {\n  'use strict';\n  if (typeof listener === 'function') {\n    if (opt_handler) {\n      listener = goog.bind(listener, opt_handler);\n    }\n  } else if (listener && typeof listener.handleEvent == 'function') {\n    // using typeof to prevent strict js warning\n    listener = goog.bind(listener.handleEvent, listener);\n  } else {\n    throw new Error('Invalid listener argument');\n  }\n\n  if (Number(opt_delay) > goog.Timer.MAX_TIMEOUT_) {\n    // Timeouts greater than MAX_INT return immediately due to integer\n    // overflow in many browsers.  Since MAX_INT is 24.8 days, just don't\n    // schedule anything at all.\n    return goog.Timer.INVALID_TIMEOUT_ID_;\n  } else {\n    return goog.Timer.defaultTimerObject.setTimeout(listener, opt_delay || 0);\n  }\n};\n\n\n/**\n * Clears a timeout initiated by {@link #callOnce}.\n * @param {?number} timerId A timer ID.\n */\ngoog.Timer.clear = function(timerId) {\n  'use strict';\n  goog.Timer.defaultTimerObject.clearTimeout(timerId);\n};\n\n\n/**\n * @param {number} delay Milliseconds to wait.\n * @param {(RESULT|goog.Thenable<RESULT>|Thenable)=} opt_result The value\n *     with which the promise will be resolved.\n * @return {!goog.Promise<RESULT>} A promise that will be resolved after\n *     the specified delay, unless it is canceled first.\n * @template RESULT\n */\ngoog.Timer.promise = function(delay, opt_result) {\n  'use strict';\n  var timerKey = null;\n  return new goog\n      .Promise(function(resolve, reject) {\n        'use strict';\n        timerKey = goog.Timer.callOnce(function() {\n          'use strict';\n          resolve(opt_result);\n        }, delay);\n        if (timerKey == goog.Timer.INVALID_TIMEOUT_ID_) {\n          reject(new Error('Failed to schedule timer.'));\n        }\n      })\n      .thenCatch(function(error) {\n        'use strict';\n        // Clear the timer. The most likely reason is \"cancel\" signal.\n        goog.Timer.clear(timerKey);\n        throw error;\n      });\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Definition of the goog.async.Throttle class.\n *\n * @see ../demos/timers.html\n */\n\ngoog.module('goog.async.Throttle');\ngoog.module.declareLegacyNamespace();\n\nconst Disposable = goog.require('goog.Disposable');\nconst Timer = goog.require('goog.Timer');\n\n\n/**\n * Throttle will perform an action that is passed in no more than once\n * per interval (specified in milliseconds). If it gets multiple signals\n * to perform the action while it is waiting, it will only perform the action\n * once at the end of the interval.\n * @final\n * @template T\n */\nclass Throttle extends Disposable {\n  /**\n   * @param {function(this: T, ...?)} listener Function to callback when the\n   *     action is triggered.\n   * @param {number} interval Interval over which to throttle. The listener can\n   *     only be called once per interval.\n   * @param {T=} handler Object in whose scope to call the listener.\n   */\n  constructor(listener, interval, handler) {\n    super();\n    /**\n     * Function to callback\n     * @type {function(this: T, ...?)}\n     * @private\n     */\n    this.listener_ = handler != null ? listener.bind(handler) : listener;\n\n    /**\n     * Interval for the throttle time\n     * @type {number}\n     * @private\n     */\n    this.interval_ = interval;\n\n    /**\n     * The last arguments passed into `fire`, or null if there is no pending\n     * call.\n     * @private {?IArrayLike}\n     */\n    this.args_ = null;\n\n    /**\n     * Indicates that the action is pending and needs to be fired.\n     * @type {boolean}\n     * @private\n     */\n    this.shouldFire_ = false;\n\n    /**\n     * Indicates the count of nested pauses currently in effect on the throttle.\n     * When this count is not zero, fired actions will be postponed until the\n     * throttle is resumed enough times to drop the pause count to zero.\n     * @type {number}\n     * @private\n     */\n    this.pauseCount_ = 0;\n\n    /**\n     * Timer for scheduling the next callback\n     * @type {?number}\n     * @private\n     */\n    this.timer_ = null;\n  }\n\n  /**\n   * Notifies the throttle that the action has happened. It will throttle\n   * the call so that the callback is not called too often according to the\n   * interval parameter passed to the constructor, passing the arguments\n   * from the last call of this function into the throttled function.\n   * @param {...?} var_args Arguments to pass on to the throttled function.\n   */\n  fire(var_args) {\n    this.args_ = arguments;\n    if (!this.timer_ && !this.pauseCount_) {\n      this.doAction_();\n    } else {\n      this.shouldFire_ = true;\n    }\n  }\n\n  /**\n   * Cancels any pending action callback. The throttle can be restarted by\n   * calling {@link #fire}.\n   */\n  stop() {\n    if (this.timer_) {\n      Timer.clear(this.timer_);\n      this.timer_ = null;\n      this.shouldFire_ = false;\n      this.args_ = null;\n    }\n  }\n\n  /**\n   * Pauses the throttle.  All pending and future action callbacks will be\n   * delayed until the throttle is resumed.  Pauses can be nested.\n   */\n  pause() {\n    this.pauseCount_++;\n  }\n\n  /**\n   * Resumes the throttle.  If doing so drops the pausing count to zero,\n   * pending action callbacks will be executed as soon as possible, but\n   * still no sooner than an interval's delay after the previous call.\n   * Future action callbacks will be executed as normal.\n   */\n  resume() {\n    this.pauseCount_--;\n    if (!this.pauseCount_ && this.shouldFire_ && !this.timer_) {\n      this.shouldFire_ = false;\n      this.doAction_();\n    }\n  }\n\n  /** @override */\n  disposeInternal() {\n    super.disposeInternal();\n    this.stop();\n  }\n\n  /**\n   * Handler for the timer to fire the throttle\n   * @private\n   */\n  onTimer_() {\n    this.timer_ = null;\n\n    if (this.shouldFire_ && !this.pauseCount_) {\n      this.shouldFire_ = false;\n      this.doAction_();\n    }\n  }\n\n  /**\n   * Calls the callback\n   * @private\n   */\n  doAction_() {\n    this.timer_ = Timer.callOnce(() => this.onTimer_(), this.interval_);\n    const args = this.args_;\n    // release memory first so it always happens even if listener throws\n    this.args_ = null;\n    this.listener_.apply(null, args);\n  }\n}\n\nexports = Throttle;\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Class to create objects which want to handle multiple events\n * and have their listeners easily cleaned up via a dispose method.\n *\n * Example:\n * <pre>\n * function Something() {\n *   Something.base(this);\n *\n *   ... set up object ...\n *\n *   // Add event listeners\n *   this.listen(this.starEl, goog.events.EventType.CLICK, this.handleStar);\n *   this.listen(this.headerEl, goog.events.EventType.CLICK, this.expand);\n *   this.listen(this.collapseEl, goog.events.EventType.CLICK, this.collapse);\n *   this.listen(this.infoEl, goog.events.EventType.MOUSEOVER, this.showHover);\n *   this.listen(this.infoEl, goog.events.EventType.MOUSEOUT, this.hideHover);\n * }\n * goog.inherits(Something, goog.events.EventHandler);\n *\n * Something.prototype.disposeInternal = function() {\n *   Something.base(this, 'disposeInternal');\n *   goog.dom.removeNode(this.container);\n * };\n *\n *\n * // Then elsewhere:\n *\n * var activeSomething = null;\n * function openSomething() {\n *   activeSomething = new Something();\n * }\n *\n * function closeSomething() {\n *   if (activeSomething) {\n *     activeSomething.dispose();  // Remove event listeners\n *     activeSomething = null;\n *   }\n * }\n * </pre>\n */\n\ngoog.provide('goog.events.EventHandler');\n\ngoog.require('goog.Disposable');\ngoog.require('goog.events');\ngoog.require('goog.object');\ngoog.requireType('goog.events.Event');\ngoog.requireType('goog.events.EventId');\ngoog.requireType('goog.events.EventTarget');\ngoog.requireType('goog.events.EventWrapper');\n\n\n\n/**\n * Super class for objects that want to easily manage a number of event\n * listeners.  It allows a short cut to listen and also provides a quick way\n * to remove all events listeners belonging to this object.\n * @param {SCOPE=} opt_scope Object in whose scope to call the listeners.\n * @constructor\n * @extends {goog.Disposable}\n * @template SCOPE\n */\ngoog.events.EventHandler = function(opt_scope) {\n  'use strict';\n  goog.Disposable.call(this);\n  // TODO(mknichel): Rename this to this.scope_ and fix the classes in google3\n  // that access this private variable. :(\n  this.handler_ = opt_scope;\n\n  /**\n   * Keys for events that are being listened to.\n   * @type {!Object<!goog.events.Key>}\n   * @private\n   */\n  this.keys_ = {};\n};\ngoog.inherits(goog.events.EventHandler, goog.Disposable);\n\n\n/**\n * Utility array used to unify the cases of listening for an array of types\n * and listening for a single event, without using recursion or allocating\n * an array each time.\n * @type {!Array<string>}\n * @const\n * @private\n */\ngoog.events.EventHandler.typeArray_ = [];\n\n\n/**\n * Listen to an event on a Listenable.  If the function is omitted then the\n * EventHandler's handleEvent method will be used.\n * @param {goog.events.ListenableType} src Event source.\n * @param {string|Array<string>|\n *     !goog.events.EventId<EVENTOBJ>|!Array<!goog.events.EventId<EVENTOBJ>>}\n *     type Event type to listen for or array of event types.\n * @param {function(this:SCOPE, EVENTOBJ):?|{handleEvent:function(?):?}|null=}\n *     opt_fn Optional callback function to be used as the listener or an object\n *     with handleEvent function.\n * @param {(boolean|!AddEventListenerOptions)=} opt_options\n * @return {THIS} This object, allowing for chaining of calls.\n * @this {THIS}\n * @template EVENTOBJ, THIS\n */\ngoog.events.EventHandler.prototype.listen = function(\n    src, type, opt_fn, opt_options) {\n  'use strict';\n  var self = /** @type {!goog.events.EventHandler} */ (this);\n  return self.listen_(src, type, opt_fn, opt_options);\n};\n\n\n/**\n * Listen to an event on a Listenable.  If the function is omitted then the\n * EventHandler's handleEvent method will be used.\n * @param {goog.events.ListenableType} src Event source.\n * @param {string|Array<string>|\n *     !goog.events.EventId<EVENTOBJ>|!Array<!goog.events.EventId<EVENTOBJ>>}\n *     type Event type to listen for or array of event types.\n * @param {function(this:T, EVENTOBJ):?|{handleEvent:function(this:T, ?):?}|\n *     null|undefined} fn Optional callback function to be used as the\n *     listener or an object with handleEvent function.\n * @param {boolean|!AddEventListenerOptions|undefined} options\n * @param {T} scope Object in whose scope to call the listener.\n * @return {THIS} This object, allowing for chaining of calls.\n * @this {THIS}\n * @template T, EVENTOBJ, THIS\n */\ngoog.events.EventHandler.prototype.listenWithScope = function(\n    src, type, fn, options, scope) {\n  'use strict';\n  var self = /** @type {!goog.events.EventHandler} */ (this);\n  // TODO(mknichel): Deprecate this function.\n  return self.listen_(src, type, fn, options, scope);\n};\n\n\n/**\n * Listen to an event on a Listenable.  If the function is omitted then the\n * EventHandler's handleEvent method will be used.\n * @param {goog.events.ListenableType} src Event source.\n * @param {string|Array<string>|\n *     !goog.events.EventId<EVENTOBJ>|!Array<!goog.events.EventId<EVENTOBJ>>}\n *     type Event type to listen for or array of event types.\n * @param {function(EVENTOBJ):?|{handleEvent:function(?):?}|null=} opt_fn\n *     Optional callback function to be used as the listener or an object with\n *     handleEvent function.\n * @param {(boolean|!AddEventListenerOptions)=} opt_options\n * @param {Object=} opt_scope Object in whose scope to call the listener.\n * @return {THIS} This object, allowing for chaining of calls.\n * @this {THIS}\n * @template EVENTOBJ, THIS\n * @private\n */\ngoog.events.EventHandler.prototype.listen_ = function(\n    src, type, opt_fn, opt_options, opt_scope) {\n  'use strict';\n  var self = /** @type {!goog.events.EventHandler} */ (this);\n  if (!Array.isArray(type)) {\n    if (type) {\n      goog.events.EventHandler.typeArray_[0] = type.toString();\n    }\n    type = goog.events.EventHandler.typeArray_;\n  }\n  for (var i = 0; i < type.length; i++) {\n    var listenerObj = goog.events.listen(\n        src, type[i], opt_fn || self.handleEvent, opt_options || false,\n        opt_scope || self.handler_ || self);\n\n    if (!listenerObj) {\n      // When goog.events.listen run on OFF_AND_FAIL or OFF_AND_SILENT\n      // (goog.events.CaptureSimulationMode) in IE8-, it will return null\n      // value.\n      return self;\n    }\n\n    var key = listenerObj.key;\n    self.keys_[key] = listenerObj;\n  }\n\n  return self;\n};\n\n\n/**\n * Listen to an event on a Listenable.  If the function is omitted, then the\n * EventHandler's handleEvent method will be used. After the event has fired the\n * event listener is removed from the target. If an array of event types is\n * provided, each event type will be listened to once.\n * @param {goog.events.ListenableType} src Event source.\n * @param {string|Array<string>|\n *     !goog.events.EventId<EVENTOBJ>|!Array<!goog.events.EventId<EVENTOBJ>>}\n *     type Event type to listen for or array of event types.\n * @param {function(this:SCOPE, EVENTOBJ):?|{handleEvent:function(?):?}|null=}\n * opt_fn\n *    Optional callback function to be used as the listener or an object with\n *    handleEvent function.\n * @param {(boolean|!AddEventListenerOptions)=} opt_options\n * @return {THIS} This object, allowing for chaining of calls.\n * @this {THIS}\n * @template EVENTOBJ, THIS\n */\ngoog.events.EventHandler.prototype.listenOnce = function(\n    src, type, opt_fn, opt_options) {\n  'use strict';\n  var self = /** @type {!goog.events.EventHandler} */ (this);\n  return self.listenOnce_(src, type, opt_fn, opt_options);\n};\n\n\n/**\n * Listen to an event on a Listenable.  If the function is omitted, then the\n * EventHandler's handleEvent method will be used. After the event has fired the\n * event listener is removed from the target. If an array of event types is\n * provided, each event type will be listened to once.\n * @param {goog.events.ListenableType} src Event source.\n * @param {string|Array<string>|\n *     !goog.events.EventId<EVENTOBJ>|!Array<!goog.events.EventId<EVENTOBJ>>}\n *     type Event type to listen for or array of event types.\n * @param {function(this:T, EVENTOBJ):?|{handleEvent:function(this:T, ?):?}|\n *     null|undefined} fn Optional callback function to be used as the\n *     listener or an object with handleEvent function.\n * @param {boolean|undefined} capture Optional whether to use capture phase.\n * @param {T} scope Object in whose scope to call the listener.\n * @return {THIS} This object, allowing for chaining of calls.\n * @this {THIS}\n * @template T, EVENTOBJ, THIS\n */\ngoog.events.EventHandler.prototype.listenOnceWithScope = function(\n    src, type, fn, capture, scope) {\n  'use strict';\n  var self = /** @type {!goog.events.EventHandler} */ (this);\n  // TODO(mknichel): Deprecate this function.\n  return self.listenOnce_(src, type, fn, capture, scope);\n};\n\n\n/**\n * Listen to an event on a Listenable.  If the function is omitted, then the\n * EventHandler's handleEvent method will be used. After the event has fired\n * the event listener is removed from the target. If an array of event types is\n * provided, each event type will be listened to once.\n * @param {goog.events.ListenableType} src Event source.\n * @param {string|Array<string>|\n *     !goog.events.EventId<EVENTOBJ>|!Array<!goog.events.EventId<EVENTOBJ>>}\n *     type Event type to listen for or array of event types.\n * @param {function(EVENTOBJ):?|{handleEvent:function(?):?}|null=} opt_fn\n *    Optional callback function to be used as the listener or an object with\n *    handleEvent function.\n * @param {(boolean|!AddEventListenerOptions)=} opt_options\n * @param {Object=} opt_scope Object in whose scope to call the listener.\n * @return {THIS} This object, allowing for chaining of calls.\n * @this {THIS}\n * @template EVENTOBJ, THIS\n * @private\n */\ngoog.events.EventHandler.prototype.listenOnce_ = function(\n    src, type, opt_fn, opt_options, opt_scope) {\n  'use strict';\n  var self = /** @type {!goog.events.EventHandler} */ (this);\n  if (Array.isArray(type)) {\n    for (var i = 0; i < type.length; i++) {\n      self.listenOnce_(src, type[i], opt_fn, opt_options, opt_scope);\n    }\n  } else {\n    var listenerObj = goog.events.listenOnce(\n        src, type, opt_fn || self.handleEvent, opt_options,\n        opt_scope || self.handler_ || self);\n    if (!listenerObj) {\n      // When goog.events.listen run on OFF_AND_FAIL or OFF_AND_SILENT\n      // (goog.events.CaptureSimulationMode) in IE8-, it will return null\n      // value.\n      return self;\n    }\n\n    var key = listenerObj.key;\n    self.keys_[key] = listenerObj;\n  }\n\n  return self;\n};\n\n\n/**\n * Adds an event listener with a specific event wrapper on a DOM Node or an\n * object that has implemented {@link goog.events.EventTarget}. A listener can\n * only be added once to an object.\n *\n * @param {EventTarget|goog.events.EventTarget} src The node to listen to\n *     events on.\n * @param {goog.events.EventWrapper} wrapper Event wrapper to use.\n * @param {function(this:SCOPE, ?):?|{handleEvent:function(?):?}|null} listener\n *     Callback method, or an object with a handleEvent function.\n * @param {boolean=} opt_capt Whether to fire in capture phase (defaults to\n *     false).\n * @return {THIS} This object, allowing for chaining of calls.\n * @this {THIS}\n * @template THIS\n */\ngoog.events.EventHandler.prototype.listenWithWrapper = function(\n    src, wrapper, listener, opt_capt) {\n  'use strict';\n  var self = /** @type {!goog.events.EventHandler} */ (this);\n  // TODO(mknichel): Remove the opt_scope from this function and then\n  // templatize it.\n  return self.listenWithWrapper_(src, wrapper, listener, opt_capt);\n};\n\n\n/**\n * Adds an event listener with a specific event wrapper on a DOM Node or an\n * object that has implemented {@link goog.events.EventTarget}. A listener can\n * only be added once to an object.\n *\n * @param {EventTarget|goog.events.EventTarget} src The node to listen to\n *     events on.\n * @param {goog.events.EventWrapper} wrapper Event wrapper to use.\n * @param {function(this:T, ?):?|{handleEvent:function(this:T, ?):?}|null}\n *     listener Optional callback function to be used as the\n *     listener or an object with handleEvent function.\n * @param {boolean|undefined} capture Optional whether to use capture phase.\n * @param {T} scope Object in whose scope to call the listener.\n * @return {THIS} This object, allowing for chaining of calls.\n * @this {THIS}\n * @template T, THIS\n */\ngoog.events.EventHandler.prototype.listenWithWrapperAndScope = function(\n    src, wrapper, listener, capture, scope) {\n  'use strict';\n  var self = /** @type {!goog.events.EventHandler} */ (this);\n  // TODO(mknichel): Deprecate this function.\n  return self.listenWithWrapper_(src, wrapper, listener, capture, scope);\n};\n\n\n/**\n * Adds an event listener with a specific event wrapper on a DOM Node or an\n * object that has implemented {@link goog.events.EventTarget}. A listener can\n * only be added once to an object.\n *\n * @param {EventTarget|goog.events.EventTarget} src The node to listen to\n *     events on.\n * @param {goog.events.EventWrapper} wrapper Event wrapper to use.\n * @param {function(?):?|{handleEvent:function(?):?}|null} listener Callback\n *     method, or an object with a handleEvent function.\n * @param {boolean=} opt_capt Whether to fire in capture phase (defaults to\n *     false).\n * @param {Object=} opt_scope Element in whose scope to call the listener.\n * @return {THIS} This object, allowing for chaining of calls.\n * @this {THIS}\n * @template THIS\n * @private\n */\ngoog.events.EventHandler.prototype.listenWithWrapper_ = function(\n    src, wrapper, listener, opt_capt, opt_scope) {\n  'use strict';\n  var self = /** @type {!goog.events.EventHandler} */ (this);\n  wrapper.listen(\n      src, listener, opt_capt, opt_scope || self.handler_ || self, self);\n  return self;\n};\n\n\n/**\n * @return {number} Number of listeners registered by this handler.\n */\ngoog.events.EventHandler.prototype.getListenerCount = function() {\n  'use strict';\n  var count = 0;\n  for (var key in this.keys_) {\n    if (Object.prototype.hasOwnProperty.call(this.keys_, key)) {\n      count++;\n    }\n  }\n  return count;\n};\n\n\n/**\n * Unlistens on an event.\n * @param {goog.events.ListenableType} src Event source.\n * @param {string|Array<string>|\n *     !goog.events.EventId<EVENTOBJ>|!Array<!goog.events.EventId<EVENTOBJ>>}\n *     type Event type or array of event types to unlisten to.\n * @param {function(this:?, EVENTOBJ):?|{handleEvent:function(?):?}|null=}\n *     opt_fn Optional callback function to be used as the listener or an object\n *     with handleEvent function.\n * @param {(boolean|!EventListenerOptions)=} opt_options\n * @param {Object=} opt_scope Object in whose scope to call the listener.\n * @return {THIS} This object, allowing for chaining of calls.\n * @this {THIS}\n * @template EVENTOBJ, THIS\n */\ngoog.events.EventHandler.prototype.unlisten = function(\n    src, type, opt_fn, opt_options, opt_scope) {\n  'use strict';\n  var self = /** @type {!goog.events.EventHandler} */ (this);\n  if (Array.isArray(type)) {\n    for (var i = 0; i < type.length; i++) {\n      self.unlisten(src, type[i], opt_fn, opt_options, opt_scope);\n    }\n  } else {\n    var capture =\n        goog.isObject(opt_options) ? !!opt_options.capture : !!opt_options;\n    var listener = goog.events.getListener(\n        src, type, opt_fn || self.handleEvent, capture,\n        opt_scope || self.handler_ || self);\n\n    if (listener) {\n      goog.events.unlistenByKey(listener);\n      delete self.keys_[listener.key];\n    }\n  }\n\n  return self;\n};\n\n\n/**\n * Removes an event listener which was added with listenWithWrapper().\n *\n * @param {EventTarget|goog.events.EventTarget} src The target to stop\n *     listening to events on.\n * @param {goog.events.EventWrapper} wrapper Event wrapper to use.\n * @param {function(?):?|{handleEvent:function(?):?}|null} listener The\n *     listener function to remove.\n * @param {boolean=} opt_capt In DOM-compliant browsers, this determines\n *     whether the listener is fired during the capture or bubble phase of the\n *     event.\n * @param {Object=} opt_scope Element in whose scope to call the listener.\n * @return {THIS} This object, allowing for chaining of calls.\n * @this {THIS}\n * @template THIS\n */\ngoog.events.EventHandler.prototype.unlistenWithWrapper = function(\n    src, wrapper, listener, opt_capt, opt_scope) {\n  'use strict';\n  var self = /** @type {!goog.events.EventHandler} */ (this);\n  wrapper.unlisten(\n      src, listener, opt_capt, opt_scope || self.handler_ || self, self);\n  return self;\n};\n\n\n/**\n * Unlistens to all events.\n */\ngoog.events.EventHandler.prototype.removeAll = function() {\n  'use strict';\n  goog.object.forEach(this.keys_, function(listenerObj, key) {\n    'use strict';\n    if (this.keys_.hasOwnProperty(key)) {\n      goog.events.unlistenByKey(listenerObj);\n    }\n  }, this);\n\n  this.keys_ = {};\n};\n\n\n/**\n * Disposes of this EventHandler and removes all listeners that it registered.\n * @override\n * @protected\n */\ngoog.events.EventHandler.prototype.disposeInternal = function() {\n  'use strict';\n  goog.events.EventHandler.superClass_.disposeInternal.call(this);\n  this.removeAll();\n};\n\n\n/**\n * Default event handler\n * @param {goog.events.Event} e Event object.\n */\ngoog.events.EventHandler.prototype.handleEvent = function(e) {\n  'use strict';\n  throw new Error('EventHandler.handleEvent not implemented');\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Provides a utility for tracing and debugging WebChannel\n *     requests.\n *\n */\n\n\ngoog.provide('goog.labs.net.webChannel.WebChannelDebug');\n\ngoog.require('goog.json');\ngoog.require('goog.log');\ngoog.requireType('goog.Uri');\ngoog.requireType('goog.debug.Loggable');\ngoog.requireType('goog.net.XmlHttp.ReadyState');\n\n\n\n/**\n * Logs and keeps a buffer of debugging info for the Channel.\n *\n * @constructor\n * @struct\n * @final\n */\ngoog.labs.net.webChannel.WebChannelDebug = function() {\n  'use strict';\n  /**\n   * The logger instance.\n   * @const\n   * @private {?goog.log.Logger}\n   */\n  this.logger_ = goog.log.getLogger('goog.labs.net.webChannel.WebChannelDebug');\n\n  /**\n   * Whether to enable redact. Defaults to true.\n   * @private {boolean}\n   */\n  this.redactEnabled_ = true;\n};\n\n\ngoog.scope(function() {\n'use strict';\nvar WebChannelDebug = goog.labs.net.webChannel.WebChannelDebug;\n\n\n/**\n * Turns off redact.\n */\nWebChannelDebug.prototype.disableRedact = function() {\n  'use strict';\n  this.redactEnabled_ = false;\n};\n\n\n/**\n * Logs that the browser went offline during the lifetime of a request.\n * @param {goog.Uri} url The URL being requested.\n */\nWebChannelDebug.prototype.browserOfflineResponse = function(url) {\n  'use strict';\n  this.info(function() {\n    'use strict';\n    return 'BROWSER_OFFLINE: ' + url;\n  });\n};\n\n\n/**\n * Logs an XmlHttp request..\n * @param {string} verb The request type (GET/POST).\n * @param {goog.Uri} uri The request destination.\n * @param {string|number|undefined} id The request id.\n * @param {number} attempt Which attempt # the request was.\n * @param {?string} postData The data posted in the request.\n */\nWebChannelDebug.prototype.xmlHttpChannelRequest = function(\n    verb, uri, id, attempt, postData) {\n  'use strict';\n  var self = this;\n  this.info(function() {\n    'use strict';\n    return 'XMLHTTP REQ (' + id + ') [attempt ' + attempt + ']: ' + verb +\n        '\\n' + uri + '\\n' + self.maybeRedactPostData_(postData);\n  });\n};\n\n\n/**\n * Logs the meta data received from an XmlHttp request.\n * @param {string} verb The request type (GET/POST).\n * @param {goog.Uri} uri The request destination.\n * @param {string|number|undefined} id The request id.\n * @param {number} attempt Which attempt # the request was.\n * @param {goog.net.XmlHttp.ReadyState} readyState The ready state.\n * @param {number} statusCode The HTTP status code.\n */\nWebChannelDebug.prototype.xmlHttpChannelResponseMetaData = function(\n    verb, uri, id, attempt, readyState, statusCode) {\n  'use strict';\n  this.info(function() {\n    'use strict';\n    return 'XMLHTTP RESP (' + id + ') [ attempt ' + attempt + ']: ' + verb +\n        '\\n' + uri + '\\n' + readyState + ' ' + statusCode;\n  });\n};\n\n\n/**\n * Logs the response data received from an XmlHttp request.\n * @param {string|number|undefined} id The request id.\n * @param {?string} responseText The response text.\n * @param {?string=} opt_desc Optional request description.\n */\nWebChannelDebug.prototype.xmlHttpChannelResponseText = function(\n    id, responseText, opt_desc) {\n  'use strict';\n  var self = this;\n  this.info(function() {\n    'use strict';\n    return 'XMLHTTP TEXT (' + id + '): ' + self.redactResponse_(responseText) +\n        (opt_desc ? ' ' + opt_desc : '');\n  });\n};\n\n\n/**\n * Logs a request timeout.\n * @param {goog.Uri} uri The uri that timed out.\n */\nWebChannelDebug.prototype.timeoutResponse = function(uri) {\n  'use strict';\n  this.info(function() {\n    'use strict';\n    return 'TIMEOUT: ' + uri;\n  });\n};\n\n\n/**\n * Logs a debug message.\n * @param {!goog.debug.Loggable} text The message.\n */\nWebChannelDebug.prototype.debug = function(text) {\n  'use strict';\n  goog.log.fine(this.logger_, text);\n};\n\n\n/**\n * Logs an exception\n * @param {Error} e The error or error event.\n * @param {goog.debug.Loggable=} opt_msg The optional message,\n *     defaults to 'Exception'.\n */\nWebChannelDebug.prototype.dumpException = function(e, opt_msg) {\n  'use strict';\n  goog.log.error(this.logger_, opt_msg || 'Exception', e);\n};\n\n\n/**\n * Logs an info message.\n * @param {!goog.debug.Loggable} text The message.\n */\nWebChannelDebug.prototype.info = function(text) {\n  'use strict';\n  goog.log.info(this.logger_, text);\n};\n\n\n/**\n * Logs a warning message.\n * @param {!goog.debug.Loggable} text The message.\n */\nWebChannelDebug.prototype.warning = function(text) {\n  'use strict';\n  goog.log.warning(this.logger_, text);\n};\n\n\n/**\n * Logs a severe message.\n * @param {!goog.debug.Loggable} text The message.\n */\nWebChannelDebug.prototype.severe = function(text) {\n  'use strict';\n  goog.log.error(this.logger_, text);\n};\n\n\n/**\n * Removes potentially private data from a response so that we don't\n * accidentally save private and personal data to the server logs.\n * @param {?string} responseText A JSON response to clean.\n * @return {?string} The cleaned response.\n * @private\n */\nWebChannelDebug.prototype.redactResponse_ = function(responseText) {\n  'use strict';\n  if (!this.redactEnabled_) {\n    return responseText;\n  }\n\n  if (!responseText) {\n    return null;\n  }\n\n  try {\n    var responseArray = JSON.parse(responseText);\n    if (responseArray) {\n      for (var i = 0; i < responseArray.length; i++) {\n        if (Array.isArray(responseArray[i])) {\n          this.maybeRedactArray_(responseArray[i]);\n        }\n      }\n    }\n\n    return goog.json.serialize(responseArray);\n  } catch (e) {\n    this.debug('Exception parsing expected JS array - probably was not JS');\n    return responseText;\n  }\n};\n\n\n/**\n * Removes data from a response array that may be sensitive.\n * @param {!Array<?>} array The array to clean.\n * @private\n */\nWebChannelDebug.prototype.maybeRedactArray_ = function(array) {\n  'use strict';\n  if (array.length < 2) {\n    return;\n  }\n  var dataPart = array[1];\n  if (!Array.isArray(dataPart)) {\n    return;\n  }\n  if (dataPart.length < 1) {\n    return;\n  }\n\n  var type = dataPart[0];\n  if (type != 'noop' && type != 'stop' && type != 'close') {\n    // redact all fields in the array\n    for (var i = 1; i < dataPart.length; i++) {\n      dataPart[i] = '';\n    }\n  }\n};\n\n\n/**\n * Removes potentially private data from a request POST body so that we don't\n * accidentally save private and personal data to the server logs.\n * @param {?string} data The data string to clean.\n * @return {?string} The data string with sensitive data replaced by 'redacted'.\n * @private\n */\nWebChannelDebug.prototype.maybeRedactPostData_ = function(data) {\n  'use strict';\n  if (!this.redactEnabled_) {\n    return data;\n  }\n\n  if (!data) {\n    return null;\n  }\n  var out = '';\n  var params = data.split('&');\n  for (var i = 0; i < params.length; i++) {\n    var param = params[i];\n    var keyValue = param.split('=');\n    if (keyValue.length > 1) {\n      var key = keyValue[0];\n      var value = keyValue[1];\n\n      var keyParts = key.split('_');\n      if (keyParts.length >= 2 && keyParts[1] == 'type') {\n        out += key + '=' + value + '&';\n      } else {\n        out += key + '=' +\n            'redacted' +\n            '&';\n      }\n    }\n  }\n  return out;\n};\n});  // goog.scope\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Static utilities for collecting stats associated with\n * ChannelRequest.\n *\n */\n\n\ngoog.provide('goog.labs.net.webChannel.requestStats');\ngoog.provide('goog.labs.net.webChannel.requestStats.Event');\ngoog.provide('goog.labs.net.webChannel.requestStats.ServerReachability');\ngoog.provide('goog.labs.net.webChannel.requestStats.ServerReachabilityEvent');\ngoog.provide('goog.labs.net.webChannel.requestStats.Stat');\ngoog.provide('goog.labs.net.webChannel.requestStats.StatEvent');\ngoog.provide('goog.labs.net.webChannel.requestStats.TimingEvent');\n\ngoog.require('goog.events.Event');\ngoog.require('goog.events.EventTarget');\n\n\ngoog.scope(function() {\n'use strict';\nvar requestStats = goog.labs.net.webChannel.requestStats;\n\n\n/**\n * Events fired.\n * @const\n */\nrequestStats.Event = {};\n\n\n/**\n * Singleton event target for firing stat events\n * @type {?goog.events.EventTarget}\n * @private\n */\nrequestStats.eventTarget_ = null;\n\n/**\n * Singleton event target for firing stat events\n * @return {!goog.events.EventTarget}\n * @private\n */\nrequestStats.getStatEventTarget_ = function() {\n  'use strict';\n  requestStats.eventTarget_ =\n      requestStats.eventTarget_ || new goog.events.EventTarget();\n  return requestStats.eventTarget_;\n};\n\n/**\n * The type of event that occurs every time some information about how reachable\n * the server is is discovered.\n */\nrequestStats.Event.SERVER_REACHABILITY_EVENT = 'serverreachability';\n\n\n/**\n * Types of events which reveal information about the reachability of the\n * server.\n * @enum {number}\n */\nrequestStats.ServerReachability = {\n  REQUEST_MADE: 1,\n  REQUEST_SUCCEEDED: 2,\n  REQUEST_FAILED: 3,\n  BACK_CHANNEL_ACTIVITY: 4  // any response data received\n};\n\n\n\n/**\n * Event class for SERVER_REACHABILITY_EVENT.\n *\n * @param {goog.events.EventTarget} target The stat event target for\n       the channel.\n * @param {requestStats.ServerReachability} reachabilityType\n *     The reachability event type.\n * @constructor\n * @extends {goog.events.Event}\n */\nrequestStats.ServerReachabilityEvent = function(target, reachabilityType) {\n  'use strict';\n  goog.events.Event.call(\n      this, requestStats.Event.SERVER_REACHABILITY_EVENT, target);\n\n  /**\n   * @type {requestStats.ServerReachability}\n   */\n  this.reachabilityType = reachabilityType;\n};\ngoog.inherits(requestStats.ServerReachabilityEvent, goog.events.Event);\n\n\n/**\n * Notify the channel that a particular fine grained network event has occurred.\n * Should be considered package-private.\n * @param {requestStats.ServerReachability} reachabilityType\n *     The reachability event type.\n */\nrequestStats.notifyServerReachabilityEvent = function(reachabilityType) {\n  'use strict';\n  var target = requestStats.getStatEventTarget_();\n  target.dispatchEvent(\n      new requestStats.ServerReachabilityEvent(target, reachabilityType));\n};\n\n\n/**\n * Stat Event that fires when things of interest happen that may be useful for\n * applications to know about for stats or debugging purposes.\n */\nrequestStats.Event.STAT_EVENT = 'statevent';\n\n\n/**\n * Enum that identifies events for statistics that are interesting to track.\n * @enum {number}\n */\nrequestStats.Stat = {\n  /** Event indicating a new connection attempt. */\n  CONNECT_ATTEMPT: 0,\n\n  /** Event indicating a connection error due to a general network problem. */\n  ERROR_NETWORK: 1,\n\n  /**\n   * Event indicating a connection error that isn't due to a general network\n   * problem.\n   */\n  ERROR_OTHER: 2,\n\n  /** Event indicating the start of test stage one. */\n  TEST_STAGE_ONE_START: 3,\n\n  /** Event indicating the start of test stage two. */\n  TEST_STAGE_TWO_START: 4,\n\n  /** Event indicating the first piece of test data was received. */\n  TEST_STAGE_TWO_DATA_ONE: 5,\n\n  /**\n   * Event indicating that the second piece of test data was received and it was\n   * received separately from the first.\n   */\n  TEST_STAGE_TWO_DATA_TWO: 6,\n\n  /** Event indicating both pieces of test data were received simultaneously. */\n  TEST_STAGE_TWO_DATA_BOTH: 7,\n\n  /** Event indicating stage one of the test request failed. */\n  TEST_STAGE_ONE_FAILED: 8,\n\n  /** Event indicating stage two of the test request failed. */\n  TEST_STAGE_TWO_FAILED: 9,\n\n  /**\n   * Event indicating that a buffering proxy is likely between the client and\n   * the server.\n   */\n  PROXY: 10,\n\n  /**\n   * Event indicating that no buffering proxy is likely between the client and\n   * the server.\n   */\n  NOPROXY: 11,\n\n  /** Event indicating an unknown SID error. */\n  REQUEST_UNKNOWN_SESSION_ID: 12,\n\n  /** Event indicating a bad status code was received. */\n  REQUEST_BAD_STATUS: 13,\n\n  /** Event indicating incomplete data was received */\n  REQUEST_INCOMPLETE_DATA: 14,\n\n  /** Event indicating bad data was received */\n  REQUEST_BAD_DATA: 15,\n\n  /** Event indicating no data was received when data was expected. */\n  REQUEST_NO_DATA: 16,\n\n  /** Event indicating a request timeout. */\n  REQUEST_TIMEOUT: 17,\n\n  /**\n   * Event indicating that the server never received our hanging GET and so it\n   * is being retried.\n   */\n  BACKCHANNEL_MISSING: 18,\n\n  /**\n   * Event indicating that we have determined that our hanging GET is not\n   * receiving data when it should be. Thus it is dead dead and will be retried.\n   */\n  BACKCHANNEL_DEAD: 19,\n\n  /**\n   * The browser declared itself offline during the lifetime of a request, or\n   * was offline when a request was initially made.\n   */\n  BROWSER_OFFLINE: 20\n};\n\n\n\n/**\n * Event class for STAT_EVENT.\n *\n * @param {goog.events.EventTarget} eventTarget The stat event target for\n       the channel.\n * @param {requestStats.Stat} stat The stat.\n * @constructor\n * @extends {goog.events.Event}\n */\nrequestStats.StatEvent = function(eventTarget, stat) {\n  'use strict';\n  goog.events.Event.call(this, requestStats.Event.STAT_EVENT, eventTarget);\n\n  /**\n   * The stat\n   * @type {requestStats.Stat}\n   */\n  this.stat = stat;\n};\ngoog.inherits(requestStats.StatEvent, goog.events.Event);\n\n\n/**\n * Returns the singleton event target for stat events.\n * @return {!goog.events.EventTarget} The event target for stat events.\n */\nrequestStats.getStatEventTarget = function() {\n  'use strict';\n  return requestStats.getStatEventTarget_();\n};\n\n\n/**\n * Helper function to call the stat event callback.\n * @param {requestStats.Stat} stat The stat.\n */\nrequestStats.notifyStatEvent = function(stat) {\n  'use strict';\n  var target = requestStats.getStatEventTarget_();\n  target.dispatchEvent(new requestStats.StatEvent(target, stat));\n};\n\n\n/**\n * An event that fires when POST requests complete successfully, indicating\n * the size of the POST and the round trip time.\n */\nrequestStats.Event.TIMING_EVENT = 'timingevent';\n\n\n\n/**\n * Event class for requestStats.Event.TIMING_EVENT\n *\n * @param {goog.events.EventTarget} target The stat event target for\n       the channel.\n * @param {number} size The number of characters in the POST data.\n * @param {number} rtt The total round trip time from POST to response in MS.\n * @param {number} retries The number of times the POST had to be retried.\n * @constructor\n * @extends {goog.events.Event}\n */\nrequestStats.TimingEvent = function(target, size, rtt, retries) {\n  'use strict';\n  goog.events.Event.call(this, requestStats.Event.TIMING_EVENT, target);\n\n  /**\n   * @type {number}\n   */\n  this.size = size;\n\n  /**\n   * @type {number}\n   */\n  this.rtt = rtt;\n\n  /**\n   * @type {number}\n   */\n  this.retries = retries;\n};\ngoog.inherits(requestStats.TimingEvent, goog.events.Event);\n\n\n/**\n * Helper function to notify listeners about POST request performance.\n *\n * @param {number} size Number of characters in the POST data.\n * @param {number} rtt The amount of time from POST start to response.\n * @param {number} retries The number of times the POST had to be retried.\n */\nrequestStats.notifyTimingEvent = function(size, rtt, retries) {\n  'use strict';\n  var target = requestStats.getStatEventTarget_();\n  target.dispatchEvent(\n      new requestStats.TimingEvent(target, size, rtt, retries));\n};\n\n\n/**\n * Allows the application to set an execution hooks for when a channel\n * starts processing requests. This is useful to track timing or logging\n * special information. The function takes no parameters and return void.\n * @param {Function} startHook  The function for the start hook.\n */\nrequestStats.setStartThreadExecutionHook = function(startHook) {\n  'use strict';\n  requestStats.startExecutionHook_ = startHook;\n};\n\n\n/**\n * Allows the application to set an execution hooks for when a channel\n * stops processing requests. This is useful to track timing or logging\n * special information. The function takes no parameters and return void.\n * @param {Function} endHook  The function for the end hook.\n */\nrequestStats.setEndThreadExecutionHook = function(endHook) {\n  'use strict';\n  requestStats.endExecutionHook_ = endHook;\n};\n\n\n/**\n * Application provided execution hook for the start hook.\n *\n * @type {Function}\n * @private\n */\nrequestStats.startExecutionHook_ = function() {};\n\n\n/**\n * Application provided execution hook for the end hook.\n *\n * @type {Function}\n * @private\n */\nrequestStats.endExecutionHook_ = function() {};\n\n\n/**\n * Helper function to call the start hook\n */\nrequestStats.onStartExecution = function() {\n  'use strict';\n  requestStats.startExecutionHook_();\n};\n\n\n/**\n * Helper function to call the end hook\n */\nrequestStats.onEndExecution = function() {\n  'use strict';\n  requestStats.endExecutionHook_();\n};\n\n\n/**\n * Wrapper around SafeTimeout which calls the start and end execution hooks\n * with a try...finally block.\n * @param {Function} fn The callback function.\n * @param {number} ms The time in MS for the timer.\n * @return {number} The ID of the timer.\n */\nrequestStats.setTimeout = function(fn, ms) {\n  'use strict';\n  if (typeof fn !== 'function') {\n    throw new Error('Fn must not be null and must be a function');\n  }\n  return goog.global.setTimeout(function() {\n    'use strict';\n    requestStats.onStartExecution();\n    try {\n      fn();\n    } finally {\n      requestStats.onEndExecution();\n    }\n  }, ms);\n};\n});  // goog.scope\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Error codes shared between goog.net.IframeIo and\n * goog.net.XhrIo.\n */\n\ngoog.provide('goog.net.ErrorCode');\n\n\n/**\n * Error codes\n * @enum {number}\n */\ngoog.net.ErrorCode = {\n\n  /**\n   * There is no error condition.\n   */\n  NO_ERROR: 0,\n\n  /**\n   * The most common error from iframeio, unfortunately, is that the browser\n   * responded with an error page that is classed as a different domain. The\n   * situations, are when a browser error page  is shown -- 404, access denied,\n   * DNS failure, connection reset etc.)\n   *\n   */\n  ACCESS_DENIED: 1,\n\n  /**\n   * Currently the only case where file not found will be caused is when the\n   * code is running on the local file system and a non-IE browser makes a\n   * request to a file that doesn't exist.\n   */\n  FILE_NOT_FOUND: 2,\n\n  /**\n   * If Firefox shows a browser error page, such as a connection reset by\n   * server or access denied, then it will fail silently without the error or\n   * load handlers firing.\n   */\n  FF_SILENT_ERROR: 3,\n\n  /**\n   * Custom error provided by the client through the error check hook.\n   */\n  CUSTOM_ERROR: 4,\n\n  /**\n   * Exception was thrown while processing the request.\n   */\n  EXCEPTION: 5,\n\n  /**\n   * The Http response returned a non-successful http status code.\n   */\n  HTTP_ERROR: 6,\n\n  /**\n   * The request was aborted.\n   */\n  ABORT: 7,\n\n  /**\n   * The request timed out.\n   */\n  TIMEOUT: 8,\n\n  /**\n   * The resource is not available offline.\n   */\n  OFFLINE: 9,\n};\n\n\n/**\n * Returns a friendly error message for an error code. These messages are for\n * debugging and are not localized.\n * @param {goog.net.ErrorCode} errorCode An error code.\n * @return {string} A message for debugging.\n */\ngoog.net.ErrorCode.getDebugMessage = function(errorCode) {\n  'use strict';\n  switch (errorCode) {\n    case goog.net.ErrorCode.NO_ERROR:\n      return 'No Error';\n\n    case goog.net.ErrorCode.ACCESS_DENIED:\n      return 'Access denied to content document';\n\n    case goog.net.ErrorCode.FILE_NOT_FOUND:\n      return 'File not found';\n\n    case goog.net.ErrorCode.FF_SILENT_ERROR:\n      return 'Firefox silently errored';\n\n    case goog.net.ErrorCode.CUSTOM_ERROR:\n      return 'Application custom error';\n\n    case goog.net.ErrorCode.EXCEPTION:\n      return 'An exception occurred';\n\n    case goog.net.ErrorCode.HTTP_ERROR:\n      return 'Http response at 400 or 500 level';\n\n    case goog.net.ErrorCode.ABORT:\n      return 'Request was aborted';\n\n    case goog.net.ErrorCode.TIMEOUT:\n      return 'Request timed out';\n\n    case goog.net.ErrorCode.OFFLINE:\n      return 'The resource is not available offline';\n\n    default:\n      return 'Unrecognized error code';\n  }\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Common events for the network classes.\n */\n\n\ngoog.provide('goog.net.EventType');\n\n\n/**\n * Event names for network events\n * @enum {string}\n */\ngoog.net.EventType = {\n  COMPLETE: 'complete',\n  SUCCESS: 'success',\n  ERROR: 'error',\n  ABORT: 'abort',\n  READY: 'ready',\n  READY_STATE_CHANGE: 'readystatechange',\n  TIMEOUT: 'timeout',\n  INCREMENTAL_DATA: 'incrementaldata',\n  PROGRESS: 'progress',\n  // DOWNLOAD_PROGRESS and UPLOAD_PROGRESS are special events dispatched by\n  // goog.net.XhrIo to allow binding listeners specific to each type of\n  // progress.\n  DOWNLOAD_PROGRESS: 'downloadprogress',\n  UPLOAD_PROGRESS: 'uploadprogress',\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Interface for a factory for creating XMLHttpRequest objects\n * and metadata about them.\n */\n\ngoog.provide('goog.net.XmlHttpFactory');\n\n/** @suppress {extraRequire} Typedef. */\ngoog.require('goog.net.XhrLike');\n\n\n\n/**\n * Abstract base class for an XmlHttpRequest factory.\n * @constructor\n */\ngoog.net.XmlHttpFactory = function() {};\n\n\n/**\n * Cache of options - we only actually call internalGetOptions once.\n * @type {?Object}\n * @private\n */\ngoog.net.XmlHttpFactory.prototype.cachedOptions_ = null;\n\n\n/**\n * @return {!goog.net.XhrLike.OrNative} A new XhrLike instance.\n */\ngoog.net.XmlHttpFactory.prototype.createInstance = goog.abstractMethod;\n\n\n/**\n * @return {Object} Options describing how xhr objects obtained from this\n *     factory should be used.\n */\ngoog.net.XmlHttpFactory.prototype.getOptions = function() {\n  'use strict';\n  return this.cachedOptions_ ||\n      (this.cachedOptions_ = this.internalGetOptions());\n};\n\n\n/**\n * Override this method in subclasses to preserve the caching offered by\n * getOptions().\n * @return {Object} Options describing how xhr objects obtained from this\n *     factory should be used.\n * @protected\n */\ngoog.net.XmlHttpFactory.prototype.internalGetOptions = goog.abstractMethod;\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Low level handling of XMLHttpRequest.\n */\n\ngoog.provide('goog.net.DefaultXmlHttpFactory');\ngoog.provide('goog.net.XmlHttp');\ngoog.provide('goog.net.XmlHttp.OptionType');\ngoog.provide('goog.net.XmlHttp.ReadyState');\ngoog.provide('goog.net.XmlHttpDefines');\n\ngoog.require('goog.asserts');\ngoog.require('goog.net.WrapperXmlHttpFactory');\ngoog.require('goog.net.XmlHttpFactory');\ngoog.requireType('goog.net.XhrLike');\n\n\n/**\n * Static class for creating XMLHttpRequest objects.\n * @return {!goog.net.XhrLike.OrNative} A new XMLHttpRequest object.\n */\ngoog.net.XmlHttp = function() {\n  'use strict';\n  return goog.net.XmlHttp.factory_.createInstance();\n};\n\n\n/**\n * @define {boolean} Whether to assume XMLHttpRequest exists. Setting this to\n *     true bypasses the ActiveX probing code.\n * NOTE(ruilopes): Due to the way JSCompiler works, this define *will not* strip\n * out the ActiveX probing code from binaries.  To achieve this, use\n * `goog.net.XmlHttpDefines.ASSUME_NATIVE_XHR` instead.\n * TODO(ruilopes): Collapse both defines.\n */\ngoog.net.XmlHttp.ASSUME_NATIVE_XHR =\n    goog.define('goog.net.XmlHttp.ASSUME_NATIVE_XHR', false);\n\n\n/** @const */\ngoog.net.XmlHttpDefines = {};\n\n\n/**\n * @define {boolean} Whether to assume XMLHttpRequest exists. Setting this to\n *     true eliminates the ActiveX probing code.\n */\ngoog.net.XmlHttpDefines.ASSUME_NATIVE_XHR =\n    goog.define('goog.net.XmlHttpDefines.ASSUME_NATIVE_XHR', false);\n\n\n/**\n * Gets the options to use with the XMLHttpRequest objects obtained using\n * the static methods.\n * @return {Object} The options.\n */\ngoog.net.XmlHttp.getOptions = function() {\n  'use strict';\n  return goog.net.XmlHttp.factory_.getOptions();\n};\n\n\n/**\n * Type of options that an XmlHttp object can have.\n * @enum {number}\n */\ngoog.net.XmlHttp.OptionType = {\n  /**\n   * Whether a goog.nullFunction should be used to clear the onreadystatechange\n   * handler instead of null.\n   */\n  USE_NULL_FUNCTION: 0,\n\n  /**\n   * NOTE(user): In IE if send() errors on a *local* request the readystate\n   * is still changed to COMPLETE.  We need to ignore it and allow the\n   * try/catch around send() to pick up the error.\n   */\n  LOCAL_REQUEST_ERROR: 1,\n};\n\n\n/**\n * Status constants for XMLHTTP, matches:\n * https://msdn.microsoft.com/en-us/library/ms534361(v=vs.85).aspx\n * @enum {number}\n */\ngoog.net.XmlHttp.ReadyState = {\n  /**\n   * Constant for when xmlhttprequest.readyState is uninitialized\n   */\n  UNINITIALIZED: 0,\n\n  /**\n   * Constant for when xmlhttprequest.readyState is loading.\n   */\n  LOADING: 1,\n\n  /**\n   * Constant for when xmlhttprequest.readyState is loaded.\n   */\n  LOADED: 2,\n\n  /**\n   * Constant for when xmlhttprequest.readyState is in an interactive state.\n   */\n  INTERACTIVE: 3,\n\n  /**\n   * Constant for when xmlhttprequest.readyState is completed\n   */\n  COMPLETE: 4,\n};\n\n\n/**\n * The global factory instance for creating XMLHttpRequest objects.\n * @type {goog.net.XmlHttpFactory}\n * @private\n */\ngoog.net.XmlHttp.factory_;\n\n\n/**\n * Sets the factories for creating XMLHttpRequest objects and their options.\n * @param {Function} factory The factory for XMLHttpRequest objects.\n * @param {Function} optionsFactory The factory for options.\n * @deprecated Use setGlobalFactory instead.\n */\ngoog.net.XmlHttp.setFactory = function(factory, optionsFactory) {\n  'use strict';\n  goog.net.XmlHttp.setGlobalFactory(new goog.net.WrapperXmlHttpFactory(\n      goog.asserts.assert(factory), goog.asserts.assert(optionsFactory)));\n};\n\n\n/**\n * Sets the global factory object.\n * @param {!goog.net.XmlHttpFactory} factory New global factory object.\n */\ngoog.net.XmlHttp.setGlobalFactory = function(factory) {\n  'use strict';\n  goog.net.XmlHttp.factory_ = factory;\n};\n\n\n\n/**\n * Default factory to use when creating xhr objects.  You probably shouldn't be\n * instantiating this directly, but rather using it via goog.net.XmlHttp.\n * @extends {goog.net.XmlHttpFactory}\n * @constructor\n */\ngoog.net.DefaultXmlHttpFactory = function() {\n  'use strict';\n  goog.net.XmlHttpFactory.call(this);\n};\ngoog.inherits(goog.net.DefaultXmlHttpFactory, goog.net.XmlHttpFactory);\n\n\n/** @override */\ngoog.net.DefaultXmlHttpFactory.prototype.createInstance = function() {\n  'use strict';\n  const progId = this.getProgId_();\n  if (progId) {\n    return new ActiveXObject(progId);\n  } else {\n    return new XMLHttpRequest();\n  }\n};\n\n\n/** @override */\ngoog.net.DefaultXmlHttpFactory.prototype.internalGetOptions = function() {\n  'use strict';\n  const progId = this.getProgId_();\n  const options = {};\n  if (progId) {\n    options[goog.net.XmlHttp.OptionType.USE_NULL_FUNCTION] = true;\n    options[goog.net.XmlHttp.OptionType.LOCAL_REQUEST_ERROR] = true;\n  }\n  return options;\n};\n\n\n/**\n * The ActiveX PROG ID string to use to create xhr's in IE. Lazily initialized.\n * @type {string|undefined}\n * @private\n */\ngoog.net.DefaultXmlHttpFactory.prototype.ieProgId_;\n\n\n/**\n * Initialize the private state used by other functions.\n * @return {string} The ActiveX PROG ID string to use to create xhr's in IE.\n * @private\n */\ngoog.net.DefaultXmlHttpFactory.prototype.getProgId_ = function() {\n  'use strict';\n  if (goog.net.XmlHttp.ASSUME_NATIVE_XHR ||\n      goog.net.XmlHttpDefines.ASSUME_NATIVE_XHR) {\n    return '';\n  }\n\n  // The following blog post describes what PROG IDs to use to create the\n  // XMLHTTP object in Internet Explorer:\n  // http://blogs.msdn.com/xmlteam/archive/2006/10/23/using-the-right-version-of-msxml-in-internet-explorer.aspx\n  // However we do not (yet) fully trust that this will be OK for old versions\n  // of IE on Win9x so we therefore keep the last 2.\n  if (!this.ieProgId_ && typeof XMLHttpRequest == 'undefined' &&\n      typeof ActiveXObject != 'undefined') {\n    // Candidate Active X types.\n    const ACTIVE_X_IDENTS = [\n      'MSXML2.XMLHTTP.6.0',\n      'MSXML2.XMLHTTP.3.0',\n      'MSXML2.XMLHTTP',\n      'Microsoft.XMLHTTP',\n    ];\n    for (let i = 0; i < ACTIVE_X_IDENTS.length; i++) {\n      const candidate = ACTIVE_X_IDENTS[i];\n\n      try {\n        new ActiveXObject(candidate);\n        // NOTE(user): cannot assign progid and return candidate in one line\n        // because JSCompiler complaings: BUG 658126\n        this.ieProgId_ = candidate;\n        return candidate;\n      } catch (e) {\n        // do nothing; try next choice\n      }\n    }\n\n    // couldn't find any matches\n    throw new Error(\n        'Could not create ActiveXObject. ActiveX might be disabled,' +\n        ' or MSXML might not be installed');\n  }\n\n  return /** @type {string} */ (this.ieProgId_);\n};\n\n\n// Set the global factory to an instance of the default factory.\ngoog.net.XmlHttp.setGlobalFactory(new goog.net.DefaultXmlHttpFactory());\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview The API spec for the WebChannel messaging library.\n *\n * Similar to HTML5 WebSocket, WebChannel offers an abstraction for\n * point-to-point socket-like communication between a browser client and\n * a remote origin.\n *\n * WebChannels are created via <code>WebChannel</code>. Multiple WebChannels\n * may be multiplexed over the same WebChannelTransport, which represents\n * the underlying physical connectivity over standard wire protocols\n * such as HTTP.\n *\n * A WebChannel in turn represents a logical communication channel between\n * the client and server end point. A WebChannel remains open for as long\n * as the client or server end-point allows.\n *\n * Messages are delivered in-order and reliably over the same WebChannel,\n * and the choice of the underlying wire protocols is completely transparent\n * to the API users.\n *\n * Note that we have no immediate plan to move this API out of labs. While\n * the implementation is production ready, the API is subject to change.\n */\n\ngoog.provide('goog.net.WebChannel');\ngoog.provide('goog.net.WebChannel.Options');\n\ngoog.require('goog.events');\ngoog.require('goog.events.Event');\ngoog.require('goog.events.Listenable');\ngoog.require('goog.net.XmlHttpFactory');\n\n\n\n/**\n * A WebChannel represents a logical bi-directional channel over which the\n * client communicates with a remote server that holds the other endpoint\n * of the channel. A WebChannel is always created in the context of a shared\n * {@link WebChannelTransport} instance. It is up to the underlying client-side\n * and server-side implementations to decide how or when multiplexing is\n * to be enabled.\n *\n * @interface\n * @extends {goog.events.Listenable}\n */\ngoog.net.WebChannel = function() {};\n\n\n\n/**\n * This interface defines a pluggable API to allow WebChannel runtime to support\n * customized algorithms in order to recover from transient failures such as\n * those failures caused by network or proxies (intermediaries).\n *\n * The algorithm may also choose to fail-fast, e.g. switch the client to some\n * offline mode.\n *\n * Extra measurements and logging could also be implemented in the custom\n * module, which has the full knowledge of all the state transitions\n * (due to failures).\n *\n * A default algorithm will be provided by the webchannel library itself. Custom\n * algorithms are expected to be tailored to specific client platforms or\n * networking environments, e.g. mobile, cellular network.\n *\n * @interface\n */\ngoog.net.WebChannel.FailureRecovery = function() {};\n\n\n/**\n * Configuration spec for newly created WebChannel instances.\n *\n * WebChannels are configured in the context of the containing\n * {@link WebChannelTransport}. The configuration parameters are specified\n * when a new instance of WebChannel is created via {@link WebChannelTransport}.\n * @record\n */\ngoog.net.WebChannel.Options = function() {};\n\n/**\n * Custom headers to be added to every message sent to the\n * server. This object is mutable, and custom headers may be changed, removed,\n * or added during the runtime after a channel has been\n * opened\n * @type {!Object<string, string>|undefined}\n */\ngoog.net.WebChannel.Options.prototype.messageHeaders;\n\n/**\n * Similar to messageHeaders, but any custom headers will\n * be sent only once when the channel is opened. Typical usage is to send\n * an auth header to the server, which only checks the auth header at the time\n * when the channel is opened.\n * @type {!Object<string, string>|undefined}\n */\ngoog.net.WebChannel.Options.prototype.initMessageHeaders;\n\n/**\n * Sent as initMessageHeaders via X-WebChannel-Content-Type,\n * to inform the server the MIME type of WebChannel messages.\n * @type {string|undefined}\n */\ngoog.net.WebChannel.Options.prototype.messageContentType;\n\n/**\n * Custom url query parameters to be added to every message\n * sent to the server. This object is mutable, and custom parameters may be\n * changed, removed or added during the runtime after a channel has been opened.\n * @type {!Object<string, string>|undefined}\n */\ngoog.net.WebChannel.Options.prototype.messageUrlParams;\n\n/**\n * Whether a special header should be added to\n * each message so that the server can dispatch webchannel messages without\n * knowing the URL path prefix. Defaults to false.\n * @type {boolean|undefined}\n */\ngoog.net.WebChannel.Options.prototype.clientProtocolHeaderRequired;\n\n/**\n * The maximum number of in-flight HTTP requests allowed\n * when SPDY is enabled. Currently we only detect SPDY in Chrome.\n * This parameter defaults to 10. When SPDY is not enabled, this parameter\n * will have no effect.\n * @type {number|undefined}\n */\ngoog.net.WebChannel.Options.prototype.concurrentRequestLimit;\n\n/**\n * Setting this to true to allow the use of sub-domains\n * (as configured by the server) to send XHRs with the CORS withCredentials\n * bit set to true.\n * @type {boolean|undefined}\n */\ngoog.net.WebChannel.Options.prototype.supportsCrossDomainXhr;\n\n/**\n * Whether to bypass v8 encoding of client-sent messages.\n * This defaults to false now due to legacy servers. New applications should\n * always configure this option to true.\n * @type {boolean|undefined}\n */\ngoog.net.WebChannel.Options.prototype.sendRawJson;\n\n/**\n * The URL parameter name that contains the session id (for sticky routing of\n * HTTP requests). When this param is specified, a server that supports this\n * option will respond with an opaque session id as part of the initial\n * handshake (via the X-HTTP-Session-Id header); and all the subsequent requests\n * will contain the httpSessionIdParam. This option will take precedence over\n * any duplicated parameter specified with messageUrlParams, whose value will be\n * ignored.\n * @type {string|undefined}\n */\ngoog.net.WebChannel.Options.prototype.httpSessionIdParam;\n\n/**\n * The URL parameter name to allow custom HTTP\n * headers to be overwritten as a URL param to bypass CORS preflight.\n * goog.net.rpc.HttpCors is used to encode the HTTP headers.\n * @type {string|undefined}\n */\ngoog.net.WebChannel.Options.prototype.httpHeadersOverwriteParam;\n\n/**\n * @type {boolean|undefined}\n */\ngoog.net.WebChannel.Options.prototype.backgroundChannelTest;\n\n/**\n * Whether to force long-polling from client to server.\n * This defaults to false. Long-polling may be necessary when a (MITM) proxy\n * is buffering data sent by the server.\n * @type {boolean|undefined}\n */\ngoog.net.WebChannel.Options.prototype.forceLongPolling;\n\n/**\n * Whether to enable automatic detection of buffering proxies. In the presence\n * of any buffering proxy, webchannel will use long-polling to send messages\n * from the server to the client. This option defaults to false.\n * Currently when fastHandshake is enabled, this option will be ignored.\n * Compared to \"forceLongPolling\", this option may introduce up to 2-RTT\n * extra latency for delivering messages generated immediately after the\n * handshake.\n * @type {boolean|undefined}\n */\ngoog.net.WebChannel.Options.prototype.detectBufferingProxy;\n\n/**\n * Enable true 0-RTT message delivery, including\n * leveraging QUIC 0-RTT (which requires GET to be used). This option\n * defaults to false. Note it is allowed to send messages before Open event is\n * received, after a channel has been opened. In order to enable 0-RTT,\n * messages will be encoded as part of URL and therefore there needs be a size\n * limit for those initial messages that are sent immediately as part of the\n * GET handshake request. With sendRawJson=true, this limit is currently set\n * to 4K chars and data beyond this limit will be buffered till the handshake\n * (1-RTT) finishes. With sendRawJson=false, it's up to the application\n * to limit the amount of data that is sent as part of the handshake.\n * @type {boolean|undefined}\n */\ngoog.net.WebChannel.Options.prototype.fastHandshake;\n\n/**\n * Enable the blocking RPC semantics for the handshake:\n * 1) the completion of handshake is blocked by the server-side application\n * logic for handling the handshake (HTTP) request; 2) the client application\n * will inspect the handshake (HTTP) response headers as generated\n * by the server application (v.s. by only the webchannel runtime). This option\n * defaults to false.\n * @type {boolean|undefined}\n */\ngoog.net.WebChannel.Options.prototype.blockingHandshake;\n\n/**\n * Whether to disable logging redact. By default, redact is\n * enabled to remove any message payload or user-provided info\n * from closure logs.\n * @type {boolean|undefined}\n */\ngoog.net.WebChannel.Options.prototype.disableRedact;\n\n/**\n * Inform the server about the client profile to enable\n * customized configs that are optimized for certain clients or environments.\n * Currently this information is sent via X-WebChannel-Client-Profile header.\n * @type {string|undefined}\n */\ngoog.net.WebChannel.Options.prototype.clientProfile;\n\n/**\n * The internal channel parameter name to allow\n * experimental channel configurations. Supported options include fastfail,\n * baseRetryDelayMs, retryDelaySeedMs, forwardChannelMaxRetries and\n * forwardChannelRequestTimeoutMs. Note that these options are subject to\n * change.\n * @type {!Object<string, boolean|number>|undefined}\n */\ngoog.net.WebChannel.Options.prototype.internalChannelParams;\n\n/**\n * Allows the caller to override the factory used to create\n * XMLHttpRequest objects. This is introduced to disable CORS on firefox OS.\n * @type {!goog.net.XmlHttpFactory|undefined}\n */\ngoog.net.WebChannel.Options.prototype.xmlHttpFactory;\n\n/**\n * Client-side thresholds that decide when to refresh\n * an underlying HTTP request, to limit memory consumption due to XHR buffering\n * or compression context. The client-side thresholds should be signficantly\n * smaller than the server-side thresholds. This allows the client to eliminate\n * any latency introduced by request refreshing, i.e. an RTT window during which\n * messages may be buffered on the server-side. Supported params include\n * totalBytesReceived, totalDurationMs.\n * @type {!Object<string, number>|undefined}\n */\ngoog.net.WebChannel.Options.prototype.requestRefreshThresholds;\n\n/**\n * Opt-in to enable Chrome origin trials from the WebChannel client. See\n * https://github.com/GoogleChrome/OriginTrials\n *\n * Origin trial history:\n * - fetch upload (07/2020 - 01/2021)\n * https://developers.chrome.com/origintrials/#/view_trial/3524066708417413121\n *\n * Participating in the origin trials will help Chrome to release new Web\n * platform features sooner, which will in turn help improve WebChannel\n * performance.\n *\n * Origin trials are not expected to interfere with WebChannel wire messages\n * and should not introduce any noticeable overhead.\n *\n * @type {boolean|undefined}\n */\ngoog.net.WebChannel.Options.prototype.enableOriginTrials;\n\n\n/**\n * Types that are allowed as message data.\n *\n * Note that JS objects (sent by the client) can only have string encoded\n * values due to the limitation of the current wire protocol.\n *\n * Unicode strings (sent by the server) may or may not need be escaped, as\n * decided by the server.\n *\n * @typedef {(!ArrayBuffer|!Blob|!Object<string, !Object|string>|!Array|string)}\n */\ngoog.net.WebChannel.MessageData;\n\n\n/**\n * Open the WebChannel against the URI specified in the constructor.\n */\ngoog.net.WebChannel.prototype.open = goog.abstractMethod;\n\n\n/**\n * Close the WebChannel.\n *\n * This is a full close (shutdown) with no guarantee of FIFO delivery in respect\n * to any in-flight messages sent to the server.\n *\n * If you need such a guarantee, see the Half the halfClose() method.\n */\ngoog.net.WebChannel.prototype.close = goog.abstractMethod;\n\n\n/**\n * Half-close the WebChannel.\n *\n * Half-close semantics:\n * 1. delivered as a regular message in FIFO programming order\n * 2. the server is expected to return a half-close too (with or without\n *    application involved), which will trigger a full close (shutdown)\n *    on the client side\n * 3. for now, the half-close event defined for server-initiated\n *    half-close is not exposed to the client application\n * 4. a client-side half-close may be triggered internally when the client\n *    receives a half-close from the server; and the client is expected to\n *    do a full close after the half-close is acked and delivered\n *    on the server-side.\n * 5. Full close is always a forced one. See the close() method.\n *\n * New messages sent after halfClose() will be dropped.\n *\n * NOTE: This is not yet implemented, and will throw an exception if called.\n */\ngoog.net.WebChannel.prototype.halfClose = goog.abstractMethod;\n\n\n/**\n * Sends a message to the server that maintains the other end point of\n * the WebChannel.\n *\n * O-RTT behavior:\n * 1. messages sent before open() is called will always be delivered as\n *    part of the handshake, i.e. with 0-RTT\n * 2. messages sent after open() is called but before the OPEN event\n *    is received will be delivered as part of the handshake if\n *    send() is called from the same execution context as open().\n * 3. otherwise, those messages will be buffered till the handshake\n *    is completed (which will fire the OPEN event).\n *\n * @param {!goog.net.WebChannel.MessageData} message The message to send.\n */\ngoog.net.WebChannel.prototype.send = goog.abstractMethod;\n\n\n/**\n * Common events fired by WebChannels.\n * @enum {string}\n */\ngoog.net.WebChannel.EventType = {\n  /** Dispatched when the channel is opened. */\n  OPEN: goog.events.getUniqueId('open'),\n\n  /** Dispatched when the channel is closed. */\n  CLOSE: goog.events.getUniqueId('close'),\n\n  /**\n   * Dispatched when the channel is aborted due to errors.\n   *\n   * For backward compatibility reasons, a CLOSE event will also be\n   * dispatched, following the ERROR event, which indicates that the channel\n   * has been completely shutdown .\n   */\n  ERROR: goog.events.getUniqueId('error'),\n\n  /** Dispatched when the channel has received a new message. */\n  MESSAGE: goog.events.getUniqueId('message')\n};\n\n\n\n/**\n * The event interface for the MESSAGE event.\n *\n * @constructor\n * @extends {goog.events.Event}\n */\ngoog.net.WebChannel.MessageEvent = function() {\n  'use strict';\n  goog.net.WebChannel.MessageEvent.base(\n      this, 'constructor', goog.net.WebChannel.EventType.MESSAGE);\n};\ngoog.inherits(goog.net.WebChannel.MessageEvent, goog.events.Event);\n\n\n/**\n * The content of the message received from the server.\n *\n * @type {!goog.net.WebChannel.MessageData}\n */\ngoog.net.WebChannel.MessageEvent.prototype.data;\n\n\n/**\n * The metadata key when the MESSAGE event represents a metadata message.\n *\n * @type {string|undefined}\n */\ngoog.net.WebChannel.MessageEvent.prototype.metadataKey;\n\n\n/**\n * WebChannel level error conditions.\n *\n * Summary of error debugging and reporting in WebChannel:\n *\n * Network Error\n * 1. By default the webchannel library will set the error status to\n *    NETWORK_ERROR when a channel has to be aborted or closed. NETWORK_ERROR\n *    may be recovered by the application by retrying and opening a new channel.\n * 2. There may be lost messages (not acked by the server) when a channel is\n *    aborted. Currently we don't have a public API to retrieve messages that\n *    are waiting to be acked on the client side. File a bug if you think it\n *    is useful to expose such an API.\n * 3. Details of why a channel fails are available via closure debug logs,\n *    and stats events (see webchannel/requeststats.js). Those are internal\n *    stats and are subject to change. File a bug if you think it's useful to\n *    version and expose such stats as part of the WebChannel API.\n *\n * Server Error\n * 1. SERVER_ERROR is intended to indicate a non-recoverable condition, e.g.\n *    when auth fails.\n * 2. We don't currently generate any such errors, because most of the time\n *    it's the responsibility of upper-layer frameworks or the application\n *    itself to indicate to the client why a webchannel has been failed\n *    by the server.\n * 3. When a channel is failed by the server explicitly, we still signal\n *    NETWORK_ERROR to the client. Explicit server failure may happen when the\n *    server does a fail-over, or becomes overloaded, or conducts a forced\n *    shutdown etc.\n * 4. We use some heuristic to decide if the network (aka cloud) is down\n *    v.s. the actual server is down.\n *\n *  RuntimeProperties.getLastStatusCode is a useful state that we expose to\n *  the client to indicate the HTTP response status code of the last HTTP\n *  request initiated by the WebChannel client library, for debugging\n *  purposes only.\n *\n *  See WebChannel.Options.backChannelFailureRecovery and\n *  WebChannel.FailureRecovery to install a custom failure-recovery algorithm.\n *\n * @enum {number}\n */\ngoog.net.WebChannel.ErrorStatus = {\n  /** No error has occurred. */\n  OK: 0,\n\n  /** Communication to the server has failed. */\n  NETWORK_ERROR: 1,\n\n  /** The server fails to accept or process the WebChannel. */\n  SERVER_ERROR: 2\n};\n\n\n\n/**\n * The event interface for the ERROR event.\n *\n * @constructor\n * @extends {goog.events.Event}\n */\ngoog.net.WebChannel.ErrorEvent = function() {\n  'use strict';\n  goog.net.WebChannel.ErrorEvent.base(\n      this, 'constructor', goog.net.WebChannel.EventType.ERROR);\n};\ngoog.inherits(goog.net.WebChannel.ErrorEvent, goog.events.Event);\n\n\n/**\n * The error status.\n *\n * @type {!goog.net.WebChannel.ErrorStatus}\n */\ngoog.net.WebChannel.ErrorEvent.prototype.status;\n\n\n/**\n * @return {!goog.net.WebChannel.RuntimeProperties} The runtime properties\n * of the WebChannel instance.\n */\ngoog.net.WebChannel.prototype.getRuntimeProperties = goog.abstractMethod;\n\n\n\n/**\n * The runtime properties of the WebChannel instance.\n *\n * This class is defined for debugging and monitoring purposes, as well as for\n * runtime functions that the application may choose to manage by itself.\n *\n * @interface\n */\ngoog.net.WebChannel.RuntimeProperties = function() {};\n\n\n/**\n * @return {number} The effective limit for the number of concurrent HTTP\n * requests that are allowed to be made for sending messages from the client\n * to the server. When SPDY is not enabled, this limit will be one.\n */\ngoog.net.WebChannel.RuntimeProperties.prototype.getConcurrentRequestLimit =\n    goog.abstractMethod;\n\n\n/**\n * For applications that need support multiple channels (e.g. from\n * different tabs) to the same origin, use this method to decide if SPDY is\n * enabled and therefore it is safe to open multiple channels.\n *\n * If SPDY is disabled, the application may choose to limit the number of active\n * channels to one or use other means such as sub-domains to work around\n * the browser connection limit.\n *\n * @return {boolean} Whether SPDY is enabled for the origin against which\n * the channel is created.\n */\ngoog.net.WebChannel.RuntimeProperties.prototype.isSpdyEnabled =\n    goog.abstractMethod;\n\n\n/**\n * @return {number} The number of requests (for sending messages to the server)\n * that are pending. If this number is approaching the value of\n * getConcurrentRequestLimit(), client-to-server message delivery may experience\n * a higher latency.\n */\ngoog.net.WebChannel.RuntimeProperties.prototype.getPendingRequestCount =\n    goog.abstractMethod;\n\n\n/**\n * For applications to query the current HTTP session id, sent by the server\n * during the initial handshake.\n *\n * @return {?string} the HTTP session id or null if no HTTP session is in use.\n */\ngoog.net.WebChannel.RuntimeProperties.prototype.getHttpSessionId =\n    goog.abstractMethod;\n\n\n/**\n * Experimental API.\n *\n * This method generates an in-band commit request to the server, which will\n * ack the commit request as soon as all messages sent prior to this commit\n * request have been committed by the application.\n *\n * Committing a message has a stronger semantics than delivering a message\n * to the application. Detail spec:\n * https://github.com/bidiweb/webchannel/blob/master/commit.md\n *\n * Timeout or cancellation is not supported and the application is expected to\n * abort the channel if the commit-ack fails to arrive in time.\n *\n * ===\n *\n * This is currently implemented only in the client layer and the commit\n * callback will be invoked after all the pending client-sent messages have been\n * delivered by the server-side webchannel end-point. This semantics is\n * different and weaker than what's required for end-to-end ack which requires\n * the server application to ack the in-order delivery of messages that are sent\n * before the commit request is issued.\n *\n * Commit should only be called after the channel open event is received.\n * Duplicated commits are allowed and only the last callback is guaranteed.\n * Commit called after the channel has been closed will be ignored.\n *\n * @param {function()} callback The callback will be invoked once an\n * ack has been received for the current commit or any newly issued commit.\n */\ngoog.net.WebChannel.RuntimeProperties.prototype.commit = goog.abstractMethod;\n\n\n/**\n * This method may be used by the application to recover from a peer failure\n * or to enable sender-initiated flow-control.\n *\n * Detail spec: https://github.com/bidiweb/webchannel/blob/master/commit.md\n *\n * This is not yet implemented.\n *\n * @return {number} The total number of messages that have not received\n * commit-ack from the server; or if no commit has been issued, the number\n * of messages that have not been delivered to the server application.\n */\ngoog.net.WebChannel.RuntimeProperties.prototype.getNonAckedMessageCount =\n    goog.abstractMethod;\n\n\n/**\n * A low water-mark message count to notify the application when the\n * flow-control condition is cleared, that is, when the application is\n * able to send more messages.\n *\n * We expect the application to configure a high water-mark message count,\n * which is checked via getNonAckedMessageCount(). When the high water-mark\n * is exceeded, the application should install a callback via this method\n * to be notified when to start to send new messages.\n *\n * This is not yet implemented.\n *\n * @param {number} count The low water-mark count. It is an error to pass\n * a non-positive value.\n * @param {function()} callback The call back to notify the application\n * when NonAckedMessageCount is below the specified low water-mark count.\n * Any previously registered callback is cleared. This new callback will\n * be cleared once it has been fired, or when the channel is closed or aborted.\n */\ngoog.net.WebChannel.RuntimeProperties.prototype.notifyNonAckedMessageCount =\n    goog.abstractMethod;\n\n\n/**\n * Experimental API.\n *\n * This method registers a callback to handle the commit request sent\n * by the server. Commit protocol spec:\n * https://github.com/bidiweb/webchannel/blob/master/commit.md\n *\n * This is not yet implemented.\n *\n * @param {function(!Object)} callback The callback will take an opaque\n * commitId which needs be passed back to the server when an ack-commit\n * response is generated by the client application, via ackCommit().\n */\ngoog.net.WebChannel.RuntimeProperties.prototype.onCommit = goog.abstractMethod;\n\n\n/**\n * Experimental API.\n *\n * This method is used by the application to generate an ack-commit response\n * for the given commitId. Commit protocol spec:\n * https://github.com/bidiweb/webchannel/blob/master/commit.md\n *\n * This is not yet implemented.\n *\n * @param {!Object} commitId The commitId which denotes the commit request\n * from the server that needs be ack'ed.\n */\ngoog.net.WebChannel.RuntimeProperties.prototype.ackCommit = goog.abstractMethod;\n\n\n/**\n * @return {number} The last HTTP status code received by the channel.\n */\ngoog.net.WebChannel.RuntimeProperties.prototype.getLastStatusCode =\n    goog.abstractMethod;\n\n\n/**\n * Enum to indicate the current recovery state.\n *\n * @enum {string}\n */\ngoog.net.WebChannel.FailureRecovery.State = {\n  /** Initial state. */\n  INIT: 'init',\n\n  /** Once a failure has been detected. */\n  FAILED: 'failed',\n\n  /**\n   * Once a recovery operation has been issued, e.g. a new request to resume\n   * communication.\n   */\n  RECOVERING: 'recovering',\n\n  /** The channel has been closed.  */\n  CLOSED: 'closed'\n};\n\n\n/**\n * Enum to indicate different failure conditions as detected by the webchannel\n * runtime.\n *\n * This enum is to be used only between the runtime and FailureRecovery module,\n * and new states are expected to be introduced in future.\n *\n * @enum {string}\n */\ngoog.net.WebChannel.FailureRecovery.FailureCondition = {\n  /**\n   * The HTTP response returned a non-successful http status code.\n   */\n  HTTP_ERROR: 'http_error',\n\n  /**\n   * The request was aborted.\n   */\n  ABORT: 'abort',\n\n  /**\n   * The request timed out.\n   */\n  TIMEOUT: 'timeout',\n\n  /**\n   * Exception was thrown while processing the request/response.\n   */\n  EXCEPTION: 'exception'\n};\n\n\n/**\n * @return {!goog.net.WebChannel.FailureRecovery.State} the current state,\n * mainly for debugging use.\n */\ngoog.net.WebChannel.FailureRecovery.prototype.getState = goog.abstractMethod;\n\n\n/**\n * This method is for WebChannel runtime to set the current failure condition\n * and to provide a callback for the algorithm to signal to the runtime\n * when it is time to issue a recovery operation, e.g. a new request to the\n * server.\n *\n * Supported transitions include:\n *   INIT->FAILED\n *   FAILED->FAILED (re-entry ok)\n *   RECOVERY->FAILED.\n *\n * Ignored if state == CLOSED.\n *\n * Advanced implementations are expected to track all the state transitions\n * and their timestamps for monitoring purposes.\n *\n * @param {!goog.net.WebChannel.FailureRecovery.FailureCondition} failure The\n * new failure condition generated by the WebChannel runtime.\n * @param {!Function} operation The callback function to the WebChannel\n * runtime to issue a recovery operation, e.g. a new request. E.g. the default\n * recovery algorithm will issue timeout-based recovery operations.\n * Post-condition for the callback: state transition to RECOVERING.\n *\n * @return {!goog.net.WebChannel.FailureRecovery.State} The updated state\n * as decided by the failure recovery module. Upon a recoverable failure event,\n * the state is transitioned to RECOVERING; or the state is transitioned to\n * FAILED which indicates a fail-fast decision for the runtime to execute.\n */\ngoog.net.WebChannel.FailureRecovery.prototype.setFailure = goog.abstractMethod;\n\n\n/**\n * The Webchannel runtime needs call this method when webchannel is closed or\n * aborted.\n *\n * Once the instance is closed, any access to the instance will be a no-op.\n */\ngoog.net.WebChannel.FailureRecovery.prototype.close = goog.abstractMethod;\n\n\n/**\n * A request header to indicate to the server the messaging protocol\n * each HTTP message is speaking.\n *\n * @type {string}\n */\ngoog.net.WebChannel.X_CLIENT_PROTOCOL = 'X-Client-Protocol';\n\n\n/**\n * The value for x-client-protocol when the messaging protocol is WebChannel.\n *\n * @type {string}\n */\ngoog.net.WebChannel.X_CLIENT_PROTOCOL_WEB_CHANNEL = 'webchannel';\n\n\n/**\n * A response header for the server to signal the wire-protocol that\n * the browser establishes with the server (or proxy), e.g. \"spdy\" (aka http/2)\n * \"quic\". This information avoids the need to use private APIs to decide if\n * HTTP requests are multiplexed etc.\n *\n * @type {string}\n */\ngoog.net.WebChannel.X_CLIENT_WIRE_PROTOCOL = 'X-Client-Wire-Protocol';\n\n\n/**\n * A response header for the server to send back the HTTP session id as part of\n * the initial handshake. The value of the HTTP session id is opaque to the\n * WebChannel protocol.\n *\n * @type {string}\n */\ngoog.net.WebChannel.X_HTTP_SESSION_ID = 'X-HTTP-Session-Id';\n\n\n/**\n * A response header for the server to send back any initial response data as a\n * header to avoid any possible buffering by an intermediary, which may\n * be undesired during the handshake.\n *\n * @type {string}\n */\ngoog.net.WebChannel.X_HTTP_INITIAL_RESPONSE = 'X-HTTP-Initial-Response';\n\n\n/**\n * A request header for specifying the content-type of WebChannel messages,\n * e.g. application-defined JSON encoding styles. Currently this header\n * is sent by the client via initMessageHeaders when the channel is opened.\n *\n * @type {string}\n */\ngoog.net.WebChannel.X_WEBCHANNEL_CONTENT_TYPE = 'X-WebChannel-Content-Type';\n\n\n/**\n * A request header for specifying the client profile in order to apply\n * customized config params on the server side, e.g. timeouts.\n *\n * @type {string}\n */\ngoog.net.WebChannel.X_WEBCHANNEL_CLIENT_PROFILE = 'X-WebChannel-Client-Profile';\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Definition of the ChannelRequest class. The request\n * object encapsulates the logic for making a single request, either for the\n * forward channel, back channel, or test channel, to the server. It contains\n * the logic for the two types of transports we use:\n * XMLHTTP and Image request. It provides timeout detection. More transports\n * to be added in future, such as Fetch, WebSocket.\n *\n */\n\n\ngoog.provide('goog.labs.net.webChannel.ChannelRequest');\n\ngoog.require('goog.Timer');\ngoog.require('goog.asserts');\ngoog.require('goog.async.Throttle');\ngoog.require('goog.dispose');\ngoog.require('goog.events.EventHandler');\ngoog.require('goog.labs.net.webChannel.Channel');\ngoog.require('goog.labs.net.webChannel.WebChannelDebug');\ngoog.require('goog.labs.net.webChannel.environment');\ngoog.require('goog.labs.net.webChannel.requestStats');\ngoog.require('goog.net.ErrorCode');\ngoog.require('goog.net.EventType');\ngoog.require('goog.net.WebChannel');\ngoog.require('goog.net.XmlHttp');\ngoog.require('goog.object');\ngoog.require('goog.string');\ngoog.require('goog.userAgent');\ngoog.requireType('goog.Uri');\ngoog.requireType('goog.events.Event');\ngoog.requireType('goog.labs.net.webChannel.Wire.QueuedMap');\ngoog.requireType('goog.net.XhrIo');\n\n\n\n/**\n * A new ChannelRequest is created for each request to the server.\n *\n * @param {goog.labs.net.webChannel.Channel} channel\n *     The channel that owns this request.\n * @param {goog.labs.net.webChannel.WebChannelDebug} channelDebug A\n *     WebChannelDebug to use for logging.\n * @param {string=} opt_sessionId The session id for the channel.\n * @param {string|number=} opt_requestId The request id for this request.\n * @param {number=} opt_retryId The retry id for this request.\n * @constructor\n * @struct\n * @final\n */\ngoog.labs.net.webChannel.ChannelRequest = function(\n    channel, channelDebug, opt_sessionId, opt_requestId, opt_retryId) {\n  'use strict';\n  /**\n   * The channel object that owns the request.\n   * @private {goog.labs.net.webChannel.Channel}\n   */\n  this.channel_ = channel;\n\n  /**\n   * The channel debug to use for logging\n   * @private {goog.labs.net.webChannel.WebChannelDebug}\n   */\n  this.channelDebug_ = channelDebug;\n\n  /**\n   * The Session ID for the channel.\n   * @private {string|undefined}\n   */\n  this.sid_ = opt_sessionId;\n\n  /**\n   * The RID (request ID) for the request.\n   * @private {string|number|undefined}\n   */\n  this.rid_ = opt_requestId;\n\n  /**\n   * The attempt number of the current request.\n   * @private {number}\n   */\n  this.retryId_ = opt_retryId || 1;\n\n  /**\n   * An object to keep track of the channel request event listeners.\n   * @private {!goog.events.EventHandler<\n   *     !goog.labs.net.webChannel.ChannelRequest>}\n   */\n  this.eventHandler_ = new goog.events.EventHandler(this);\n\n  /**\n   * The timeout in ms before failing the request.\n   * @private {number}\n   */\n  this.timeout_ = goog.labs.net.webChannel.ChannelRequest.TIMEOUT_MS_;\n\n  /**\n   * A timer for polling responseText in browsers that don't fire\n   * onreadystatechange during incremental loading of responseText.\n   * @private {goog.Timer}\n   */\n  this.pollingTimer_ =\n      new goog.Timer(goog.labs.net.webChannel.environment.getPollingInterval());\n\n  /**\n   * Extra HTTP headers to add to all the requests sent to the server.\n   * @private {?Object}\n   */\n  this.extraHeaders_ = null;\n\n\n  /**\n   * Whether the request was successful. This is only set to true after the\n   * request successfully completes.\n   * @private {boolean}\n   */\n  this.successful_ = false;\n\n\n  /**\n   * The TimerID of the timer used to detect if the request has timed-out.\n   * @type {?number}\n   * @private\n   */\n  this.watchDogTimerId_ = null;\n\n  /**\n   * The time in the future when the request will timeout.\n   * @private {?number}\n   */\n  this.watchDogTimeoutTime_ = null;\n\n  /**\n   * The time the request started.\n   * @private {?number}\n   */\n  this.requestStartTime_ = null;\n\n  /**\n   * The type of request (XMLHTTP, IMG)\n   * @private {?number}\n   */\n  this.type_ = null;\n\n  /**\n   * The base Uri for the request. The includes all the parameters except the\n   * one that indicates the retry number.\n   * @private {?goog.Uri}\n   */\n  this.baseUri_ = null;\n\n  /**\n   * The request Uri that was actually used for the most recent request attempt.\n   * @private {?goog.Uri}\n   */\n  this.requestUri_ = null;\n\n  /**\n   * The post data, if the request is a post.\n   * @private {?string}\n   */\n  this.postData_ = null;\n\n  /**\n   * An array of pending messages that we have either received a non-successful\n   * response for, or no response at all, and which therefore may or may not\n   * have been received by the server.\n   * @private {!Array<goog.labs.net.webChannel.Wire.QueuedMap>}\n   */\n  this.pendingMessages_ = [];\n\n  /**\n   * The XhrLte request if the request is using XMLHTTP\n   * @private {?goog.net.XhrIo}\n   */\n  this.xmlHttp_ = null;\n\n  /**\n   * The position of where the next unprocessed chunk starts in the response\n   * text.\n   * @private {number}\n   */\n  this.xmlHttpChunkStart_ = 0;\n\n  /**\n   * The verb (Get or Post) for the request.\n   * @private {?string}\n   */\n  this.verb_ = null;\n\n  /**\n   * The last error if the request failed.\n   * @private {?goog.labs.net.webChannel.ChannelRequest.Error}\n   */\n  this.lastError_ = null;\n\n  /**\n   * The last status code received.\n   * @private {number}\n   */\n  this.lastStatusCode_ = -1;\n\n  /**\n   * Whether the request has been cancelled due to a call to cancel.\n   * @private {boolean}\n   */\n  this.cancelled_ = false;\n\n  /**\n   * A throttle time in ms for readystatechange events for the backchannel.\n   * Useful for throttling when ready state is INTERACTIVE (partial data).\n   * If set to zero no throttle is used.\n   *\n   * See WebChannelBase.prototype.readyStateChangeThrottleMs_\n   *\n   * @private {number}\n   */\n  this.readyStateChangeThrottleMs_ = 0;\n\n  /**\n   * The throttle for readystatechange events for the current request, or null\n   * if there is none.\n   * @private {?goog.async.Throttle}\n   */\n  this.readyStateChangeThrottle_ = null;\n\n  /**\n   * Whether to the result is expected to be encoded for chunking and thus\n   * requires decoding.\n   * @private {boolean}\n   */\n  this.decodeChunks_ = false;\n\n  /**\n   * Whether to decode x-http-initial-response.\n   * @private {boolean}\n   */\n  this.decodeInitialResponse_ = false;\n\n  /**\n   * Whether x-http-initial-response has been decoded (dispatched).\n   * @private {boolean}\n   */\n  this.initialResponseDecoded_ = false;\n\n  /**\n   * Whether the first byte of response body has arrived, for a successful\n   * response.\n   * @private {boolean}\n   */\n  this.firstByteReceived_ = false;\n};\n\n\ngoog.scope(function() {\n'use strict';\nvar WebChannel = goog.net.WebChannel;\nvar Channel = goog.labs.net.webChannel.Channel;\nvar ChannelRequest = goog.labs.net.webChannel.ChannelRequest;\nvar requestStats = goog.labs.net.webChannel.requestStats;\nvar WebChannelDebug = goog.labs.net.webChannel.WebChannelDebug;\nvar environment = goog.labs.net.webChannel.environment;\n\n\n/**\n * Default timeout in MS for a request. The server must return data within this\n * time limit for the request to not timeout.\n * @private {number}\n */\nChannelRequest.TIMEOUT_MS_ = 45 * 1000;\n\n\n/**\n * Enum for channel requests type\n * @enum {number}\n * @private\n */\nChannelRequest.Type_ = {\n  /**\n   * XMLHTTP requests.\n   */\n  XML_HTTP: 1,\n\n  /**\n   * IMG requests.\n   */\n  CLOSE_REQUEST: 2\n};\n\n\n/**\n * Enum type for identifying an error.\n * @enum {number}\n */\nChannelRequest.Error = {\n  /**\n   * Errors due to a non-200 status code.\n   */\n  STATUS: 0,\n\n  /**\n   * Errors due to no data being returned.\n   */\n  NO_DATA: 1,\n\n  /**\n   * Errors due to a timeout.\n   */\n  TIMEOUT: 2,\n\n  /**\n   * Errors due to the server returning an unknown.\n   */\n  UNKNOWN_SESSION_ID: 3,\n\n  /**\n   * Errors due to bad data being received.\n   */\n  BAD_DATA: 4,\n\n  /**\n   * Errors due to the handler throwing an exception.\n   */\n  HANDLER_EXCEPTION: 5,\n\n  /**\n   * The browser declared itself offline during the request.\n   */\n  BROWSER_OFFLINE: 6\n};\n\n\n/**\n * Returns a useful error string for debugging based on the specified error\n * code.\n * @param {?ChannelRequest.Error} errorCode The error code.\n * @param {number} statusCode The HTTP status code.\n * @return {string} The error string for the given code combination.\n */\nChannelRequest.errorStringFromCode = function(errorCode, statusCode) {\n  'use strict';\n  switch (errorCode) {\n    case ChannelRequest.Error.STATUS:\n      return 'Non-200 return code (' + statusCode + ')';\n    case ChannelRequest.Error.NO_DATA:\n      return 'XMLHTTP failure (no data)';\n    case ChannelRequest.Error.TIMEOUT:\n      return 'HttpConnection timeout';\n    default:\n      return 'Unknown error';\n  }\n};\n\n\n/**\n * Sentinel value used to indicate an invalid chunk in a multi-chunk response.\n * @private {Object}\n */\nChannelRequest.INVALID_CHUNK_ = {};\n\n\n/**\n * Sentinel value used to indicate an incomplete chunk in a multi-chunk\n * response.\n * @private {Object}\n */\nChannelRequest.INCOMPLETE_CHUNK_ = {};\n\n\n/**\n * Returns whether XHR streaming is supported on this browser.\n *\n * @return {boolean} Whether XHR streaming is supported.\n * @see http://code.google.com/p/closure-library/issues/detail?id=346\n */\nChannelRequest.supportsXhrStreaming = function() {\n  'use strict';\n  return !goog.userAgent.IE || goog.userAgent.isDocumentModeOrHigher(10);\n};\n\n\n/**\n * Sets extra HTTP headers to add to all the requests sent to the server.\n *\n * @param {Object} extraHeaders The HTTP headers.\n */\nChannelRequest.prototype.setExtraHeaders = function(extraHeaders) {\n  'use strict';\n  this.extraHeaders_ = extraHeaders;\n};\n\n\n/**\n * Overrides the default HTTP method.\n *\n * @param {string} verb The HTTP method\n */\nChannelRequest.prototype.setVerb = function(verb) {\n  'use strict';\n  this.verb_ = verb;\n};\n\n\n/**\n * Sets the timeout for a request\n *\n * @param {number} timeout   The timeout in MS for when we fail the request.\n */\nChannelRequest.prototype.setTimeout = function(timeout) {\n  'use strict';\n  this.timeout_ = timeout;\n};\n\n\n/**\n * Sets the throttle for handling onreadystatechange events for the request.\n *\n * @param {number} throttle The throttle in ms.  A value of zero indicates\n *     no throttle.\n */\nChannelRequest.prototype.setReadyStateChangeThrottle = function(throttle) {\n  'use strict';\n  this.readyStateChangeThrottleMs_ = throttle;\n};\n\n\n/**\n * Sets the pending messages that this request is handling.\n *\n * @param {!Array<goog.labs.net.webChannel.Wire.QueuedMap>} pendingMessages\n *     The pending messages for this request.\n */\nChannelRequest.prototype.setPendingMessages = function(pendingMessages) {\n  'use strict';\n  this.pendingMessages_ = pendingMessages;\n};\n\n\n/**\n * Gets the pending messages that this request is handling, in case of a retry.\n *\n * @return {!Array<goog.labs.net.webChannel.Wire.QueuedMap>} The pending\n *     messages for this request.\n */\nChannelRequest.prototype.getPendingMessages = function() {\n  'use strict';\n  return this.pendingMessages_;\n};\n\n\n/**\n * Uses XMLHTTP to send an HTTP POST to the server.\n *\n * @param {goog.Uri} uri  The uri of the request.\n * @param {?string} postData  The data for the post body.\n * @param {boolean} decodeChunks  Whether to the result is expected to be\n *     encoded for chunking and thus requires decoding.\n */\nChannelRequest.prototype.xmlHttpPost = function(uri, postData, decodeChunks) {\n  'use strict';\n  this.type_ = ChannelRequest.Type_.XML_HTTP;\n  this.baseUri_ = uri.clone().makeUnique();\n  this.postData_ = postData;\n  this.decodeChunks_ = decodeChunks;\n  this.sendXmlHttp_(null /* hostPrefix */);\n};\n\n\n/**\n * Uses XMLHTTP to send an HTTP GET to the server.\n *\n * @param {goog.Uri} uri  The uri of the request.\n * @param {boolean} decodeChunks  Whether to the result is expected to be\n *     encoded for chunking and thus requires decoding.\n * @param {?string} hostPrefix  The host prefix, if we might be using a\n *     secondary domain.  Note that it should also be in the URL, adding this\n *     won't cause it to be added to the URL.\n */\nChannelRequest.prototype.xmlHttpGet = function(uri, decodeChunks, hostPrefix) {\n  'use strict';\n  this.type_ = ChannelRequest.Type_.XML_HTTP;\n  this.baseUri_ = uri.clone().makeUnique();\n  this.postData_ = null;\n  this.decodeChunks_ = decodeChunks;\n\n  this.sendXmlHttp_(hostPrefix);\n};\n\n\n/**\n * Sends a request via XMLHTTP according to the current state of the request\n * object.\n *\n * @param {?string} hostPrefix The host prefix, if we might be using a secondary\n *     domain.\n * @private\n */\nChannelRequest.prototype.sendXmlHttp_ = function(hostPrefix) {\n  'use strict';\n  this.requestStartTime_ = goog.now();\n  this.ensureWatchDogTimer_();\n\n  // clone the base URI to create the request URI. The request uri has the\n  // attempt number as a parameter which helps in debugging.\n  this.requestUri_ = this.baseUri_.clone();\n  this.requestUri_.setParameterValues('t', this.retryId_);\n\n  // send the request either as a POST or GET\n  this.xmlHttpChunkStart_ = 0;\n  var useSecondaryDomains = this.channel_.shouldUseSecondaryDomains();\n  this.xmlHttp_ =\n      this.channel_.createXhrIo(useSecondaryDomains ? hostPrefix : null);\n\n  if (this.readyStateChangeThrottleMs_ > 0) {\n    this.readyStateChangeThrottle_ = new goog.async.Throttle(\n        goog.bind(this.xmlHttpHandler_, this, this.xmlHttp_),\n        this.readyStateChangeThrottleMs_);\n  }\n\n  this.eventHandler_.listen(\n      this.xmlHttp_, goog.net.EventType.READY_STATE_CHANGE,\n      this.readyStateChangeHandler_);\n\n  var headers = this.extraHeaders_ ? goog.object.clone(this.extraHeaders_) : {};\n  if (this.postData_) {\n    if (!this.verb_) {\n      this.verb_ = 'POST';\n    }\n    headers['Content-Type'] = 'application/x-www-form-urlencoded';\n    this.xmlHttp_.send(this.requestUri_, this.verb_, this.postData_, headers);\n  } else {\n    this.verb_ = 'GET';\n    this.xmlHttp_.send(this.requestUri_, this.verb_, null, headers);\n  }\n  requestStats.notifyServerReachabilityEvent(\n      requestStats.ServerReachability.REQUEST_MADE);\n  this.channelDebug_.xmlHttpChannelRequest(\n      this.verb_, this.requestUri_, this.rid_, this.retryId_, this.postData_);\n};\n\n\n/**\n * Handles a readystatechange event.\n * @param {goog.events.Event} evt The event.\n * @private\n */\nChannelRequest.prototype.readyStateChangeHandler_ = function(evt) {\n  'use strict';\n  var xhr = /** @type {goog.net.XhrIo} */ (evt.target);\n  var throttle = this.readyStateChangeThrottle_;\n  if (throttle &&\n      xhr.getReadyState() == goog.net.XmlHttp.ReadyState.INTERACTIVE) {\n    // Only throttle in the partial data case.\n    this.channelDebug_.debug('Throttling readystatechange.');\n    throttle.fire();\n  } else {\n    // If we haven't throttled, just handle response directly.\n    this.xmlHttpHandler_(xhr);\n  }\n};\n\n\n/**\n * XmlHttp handler\n * @param {goog.net.XhrIo} xmlhttp The XhrIo object for the current request.\n * @private\n */\nChannelRequest.prototype.xmlHttpHandler_ = function(xmlhttp) {\n  'use strict';\n  requestStats.onStartExecution();\n\n  try {\n    if (xmlhttp == this.xmlHttp_) {\n      this.onXmlHttpReadyStateChanged_();\n    } else {\n      this.channelDebug_.warning(\n          'Called back with an ' +\n          'unexpected xmlhttp');\n    }\n  } catch (ex) {\n    this.channelDebug_.debug('Failed call to OnXmlHttpReadyStateChanged_');\n    if (this.xmlHttp_ && this.xmlHttp_.getResponseText()) {\n      var channelRequest = this;\n      this.channelDebug_.dumpException(ex, function() {\n        'use strict';\n        return 'ResponseText: ' + channelRequest.xmlHttp_.getResponseText();\n      });\n    } else {\n      this.channelDebug_.dumpException(ex, 'No response text');\n    }\n  } finally {\n    requestStats.onEndExecution();\n  }\n};\n\n\n/**\n * Called by the readystate handler for XMLHTTP requests.\n *\n * @private\n */\nChannelRequest.prototype.onXmlHttpReadyStateChanged_ = function() {\n  'use strict';\n  var readyState = this.xmlHttp_.getReadyState();\n  var errorCode = this.xmlHttp_.getLastErrorCode();\n  var statusCode = this.xmlHttp_.getStatus();\n\n  // we get partial results in browsers that support ready state interactive.\n  // We also make sure that getResponseText is not null in interactive mode\n  // before we continue.\n  if (readyState < goog.net.XmlHttp.ReadyState.INTERACTIVE ||\n      (readyState == goog.net.XmlHttp.ReadyState.INTERACTIVE &&\n       !environment.isPollingRequired() &&  // otherwise, go on to startPolling\n       !this.xmlHttp_.getResponseText())) {\n    return;  // not yet ready\n  }\n\n  // Dispatch any appropriate network events.\n  if (!this.cancelled_ && readyState == goog.net.XmlHttp.ReadyState.COMPLETE &&\n      errorCode != goog.net.ErrorCode.ABORT) {\n    // Pretty conservative, these are the only known scenarios which we'd\n    // consider indicative of a truly non-functional network connection.\n    if (errorCode == goog.net.ErrorCode.TIMEOUT || statusCode <= 0) {\n      requestStats.notifyServerReachabilityEvent(\n          requestStats.ServerReachability.REQUEST_FAILED);\n    } else {\n      requestStats.notifyServerReachabilityEvent(\n          requestStats.ServerReachability.REQUEST_SUCCEEDED);\n    }\n  }\n\n  // got some data so cancel the watchdog timer\n  this.cancelWatchDogTimer_();\n\n  var status = this.xmlHttp_.getStatus();\n  this.lastStatusCode_ = status;\n  var responseText = this.xmlHttp_.getResponseText();\n  if (!responseText) {\n    var channelRequest = this;\n    this.channelDebug_.debug(function() {\n      'use strict';\n      return 'No response text for uri ' + channelRequest.requestUri_ +\n          ' status ' + status;\n    });\n  }\n  this.successful_ = (status == 200);\n\n  this.channelDebug_.xmlHttpChannelResponseMetaData(\n      /** @type {string} */ (this.verb_), this.requestUri_, this.rid_,\n      this.retryId_, readyState, status);\n\n  if (!this.successful_) {\n    if (status == 400 && responseText.indexOf('Unknown SID') > 0) {\n      // the server error string will include 'Unknown SID' which indicates the\n      // server doesn't know about the session (maybe it got restarted, maybe\n      // the user got moved to another server, etc.,). Handlers can special\n      // case this error\n      this.lastError_ = ChannelRequest.Error.UNKNOWN_SESSION_ID;\n      requestStats.notifyStatEvent(\n          requestStats.Stat.REQUEST_UNKNOWN_SESSION_ID);\n      this.channelDebug_.warning('XMLHTTP Unknown SID (' + this.rid_ + ')');\n    } else {\n      this.lastError_ = ChannelRequest.Error.STATUS;\n      requestStats.notifyStatEvent(requestStats.Stat.REQUEST_BAD_STATUS);\n      this.channelDebug_.warning(\n          'XMLHTTP Bad status ' + status + ' (' + this.rid_ + ')');\n    }\n    this.cleanup_();\n    this.dispatchFailure_();\n    return;\n  }\n\n  if (this.shouldCheckInitialResponse_()) {\n    var initialResponse = this.getInitialResponse_();\n    if (initialResponse) {\n      this.channelDebug_.xmlHttpChannelResponseText(\n          this.rid_, initialResponse,\n          'Initial handshake response via ' +\n              WebChannel.X_HTTP_INITIAL_RESPONSE);\n      this.initialResponseDecoded_ = true;\n      this.safeOnRequestData_(initialResponse);\n    } else {\n      this.successful_ = false;\n      this.lastError_ = ChannelRequest.Error.UNKNOWN_SESSION_ID;  // fail-fast\n      requestStats.notifyStatEvent(\n          requestStats.Stat.REQUEST_UNKNOWN_SESSION_ID);\n      this.channelDebug_.warning(\n          'XMLHTTP Missing X_HTTP_INITIAL_RESPONSE' +\n          ' (' + this.rid_ + ')');\n      this.cleanup_();\n      this.dispatchFailure_();\n      return;\n    }\n  }\n\n  if (this.decodeChunks_) {\n    this.decodeNextChunks_(readyState, responseText);\n    if (environment.isPollingRequired() && this.successful_ &&\n        readyState == goog.net.XmlHttp.ReadyState.INTERACTIVE) {\n      this.startPolling_();\n    }\n  } else {\n    this.channelDebug_.xmlHttpChannelResponseText(\n        this.rid_, responseText, null);\n    this.safeOnRequestData_(responseText);\n  }\n\n  if (readyState == goog.net.XmlHttp.ReadyState.COMPLETE) {\n    this.cleanup_();\n  }\n\n  if (!this.successful_) {\n    return;\n  }\n\n  if (!this.cancelled_) {\n    if (readyState == goog.net.XmlHttp.ReadyState.COMPLETE) {\n      this.channel_.onRequestComplete(this);\n    } else {\n      // The default is false, the result from this callback shouldn't carry\n      // over to the next callback, otherwise the request looks successful if\n      // the watchdog timer gets called\n      this.successful_ = false;\n      this.ensureWatchDogTimer_();\n    }\n  }\n};\n\n\n/**\n * Whether we need check the initial-response header that is sent during the\n * fast handshake.\n *\n * @return {boolean} true if the initial-response header is yet to be processed.\n * @private\n */\nChannelRequest.prototype.shouldCheckInitialResponse_ = function() {\n  'use strict';\n  return this.decodeInitialResponse_ && !this.initialResponseDecoded_;\n};\n\n\n/**\n * Queries the initial response header that is sent during the handshake.\n *\n * @return {?string} The non-empty header value or null.\n * @private\n */\nChannelRequest.prototype.getInitialResponse_ = function() {\n  'use strict';\n  if (this.xmlHttp_) {\n    var value = this.xmlHttp_.getStreamingResponseHeader(\n        WebChannel.X_HTTP_INITIAL_RESPONSE);\n    if (value && !goog.string.isEmptyOrWhitespace(value)) {\n      return value;\n    }\n  }\n\n  return null;\n};\n\n\n/**\n * Check if the initial response header has been handled.\n *\n * @return {boolean} true if X_HTTP_INITIAL_RESPONSE has been handled.\n */\nChannelRequest.prototype.isInitialResponseDecoded = function() {\n  'use strict';\n  return this.initialResponseDecoded_;\n};\n\n\n/**\n * Decodes X_HTTP_INITIAL_RESPONSE if present.\n */\nChannelRequest.prototype.setDecodeInitialResponse = function() {\n  'use strict';\n  this.decodeInitialResponse_ = true;\n};\n\n\n/**\n * Decodes the next set of available chunks in the response.\n * @param {number} readyState The value of readyState.\n * @param {string} responseText The value of responseText.\n * @private\n */\nChannelRequest.prototype.decodeNextChunks_ = function(\n    readyState, responseText) {\n  'use strict';\n  var decodeNextChunksSuccessful = true;\n\n  while (!this.cancelled_ && this.xmlHttpChunkStart_ < responseText.length) {\n    var chunkText = this.getNextChunk_(responseText);\n    if (chunkText == ChannelRequest.INCOMPLETE_CHUNK_) {\n      if (readyState == goog.net.XmlHttp.ReadyState.COMPLETE) {\n        // should have consumed entire response when the request is done\n        this.lastError_ = ChannelRequest.Error.BAD_DATA;\n        requestStats.notifyStatEvent(requestStats.Stat.REQUEST_INCOMPLETE_DATA);\n        decodeNextChunksSuccessful = false;\n      }\n      this.channelDebug_.xmlHttpChannelResponseText(\n          this.rid_, null, '[Incomplete Response]');\n      break;\n    } else if (chunkText == ChannelRequest.INVALID_CHUNK_) {\n      this.lastError_ = ChannelRequest.Error.BAD_DATA;\n      requestStats.notifyStatEvent(requestStats.Stat.REQUEST_BAD_DATA);\n      this.channelDebug_.xmlHttpChannelResponseText(\n          this.rid_, responseText, '[Invalid Chunk]');\n      decodeNextChunksSuccessful = false;\n      break;\n    } else {\n      this.channelDebug_.xmlHttpChannelResponseText(\n          this.rid_, /** @type {string} */ (chunkText), null);\n      this.safeOnRequestData_(/** @type {string} */ (chunkText));\n    }\n  }\n\n  if (readyState == goog.net.XmlHttp.ReadyState.COMPLETE &&\n      responseText.length == 0) {\n    // also an error if we didn't get any response\n    this.lastError_ = ChannelRequest.Error.NO_DATA;\n    requestStats.notifyStatEvent(requestStats.Stat.REQUEST_NO_DATA);\n    decodeNextChunksSuccessful = false;\n  }\n\n  this.successful_ = this.successful_ && decodeNextChunksSuccessful;\n\n  if (!decodeNextChunksSuccessful) {\n    // malformed response - we make this trigger retry logic\n    this.channelDebug_.xmlHttpChannelResponseText(\n        this.rid_, responseText, '[Invalid Chunked Response]');\n    this.cleanup_();\n    this.dispatchFailure_();\n  } else {\n    if (responseText.length > 0 && !this.firstByteReceived_) {\n      this.firstByteReceived_ = true;\n      this.channel_.onFirstByteReceived(this, responseText);\n    }\n  }\n};\n\n\n/**\n * Polls the response for new data.\n * @private\n */\nChannelRequest.prototype.pollResponse_ = function() {\n  'use strict';\n  if (!this.xmlHttp_) {\n    return;  // already closed\n  }\n  var readyState = this.xmlHttp_.getReadyState();\n  var responseText = this.xmlHttp_.getResponseText();\n  if (this.xmlHttpChunkStart_ < responseText.length) {\n    this.cancelWatchDogTimer_();\n    this.decodeNextChunks_(readyState, responseText);\n    if (this.successful_ &&\n        readyState != goog.net.XmlHttp.ReadyState.COMPLETE) {\n      this.ensureWatchDogTimer_();\n    }\n  }\n};\n\n\n/**\n * Starts a polling interval for changes to responseText of the\n * XMLHttpRequest, for browsers that don't fire onreadystatechange\n * as data comes in incrementally.  This timer is disabled in\n * cleanup_().\n * @private\n */\nChannelRequest.prototype.startPolling_ = function() {\n  'use strict';\n  this.eventHandler_.listen(\n      this.pollingTimer_, goog.Timer.TICK, this.pollResponse_);\n  this.pollingTimer_.start();\n};\n\n\n/**\n * Returns the next chunk of a chunk-encoded response. This is not standard\n * HTTP chunked encoding because browsers don't expose the chunk boundaries to\n * the application through XMLHTTP. So we have an additional chunk encoding at\n * the application level that lets us tell where the beginning and end of\n * individual responses are so that we can only try to eval a complete JS array.\n *\n * The encoding is the size of the chunk encoded as a decimal string followed\n * by a newline followed by the data.\n *\n * @param {string} responseText The response text from the XMLHTTP response.\n * @return {string|Object} The next chunk string or a sentinel object\n *                         indicating a special condition.\n * @private\n */\nChannelRequest.prototype.getNextChunk_ = function(responseText) {\n  'use strict';\n  var sizeStartIndex = this.xmlHttpChunkStart_;\n  var sizeEndIndex = responseText.indexOf('\\n', sizeStartIndex);\n  if (sizeEndIndex == -1) {\n    return ChannelRequest.INCOMPLETE_CHUNK_;\n  }\n\n  var sizeAsString = responseText.substring(sizeStartIndex, sizeEndIndex);\n  var size = Number(sizeAsString);\n  if (isNaN(size)) {\n    return ChannelRequest.INVALID_CHUNK_;\n  }\n\n  var chunkStartIndex = sizeEndIndex + 1;\n  if (chunkStartIndex + size > responseText.length) {\n    return ChannelRequest.INCOMPLETE_CHUNK_;\n  }\n\n  var chunkText = responseText.substr(chunkStartIndex, size);\n  this.xmlHttpChunkStart_ = chunkStartIndex + size;\n  return chunkText;\n};\n\n\n/**\n * Uses an IMG tag or navigator.sendBeacon to send an HTTP get to the server.\n *\n * This is only currently used to terminate the connection, as an IMG tag is\n * the most reliable way to send something to the server while the page\n * is getting torn down.\n *\n * Navigator.sendBeacon is available on Chrome and Firefox as a formal\n * solution to ensure delivery without blocking window close. See\n * https://developer.mozilla.org/en-US/docs/Web/API/Navigator/sendBeacon\n *\n * For Chrome Apps, sendBeacon is always necessary due to Content Security\n * Policy (CSP) violation of using an IMG tag.\n *\n * For react-native, we use xhr to send the actual close request, and assume\n * there is no page-close issue with react-native.\n *\n * @param {goog.Uri} uri The uri to send a request to.\n */\nChannelRequest.prototype.sendCloseRequest = function(uri) {\n  'use strict';\n  this.type_ = ChannelRequest.Type_.CLOSE_REQUEST;\n  this.baseUri_ = uri.clone().makeUnique();\n\n  var requestSent = false;\n\n  if (goog.global.navigator && goog.global.navigator.sendBeacon) {\n    // empty string body to avoid 413 error on chrome < 41\n    requestSent =\n        goog.global.navigator.sendBeacon(this.baseUri_.toString(), '');\n  }\n\n  if (!requestSent && goog.global.Image) {\n    var eltImg = new Image();\n    eltImg.src = this.baseUri_;\n    requestSent = true;\n  }\n\n  if (!requestSent) {\n    // no handler is set to match the sendBeacon/Image behavior\n    this.xmlHttp_ = this.channel_.createXhrIo(null);\n    this.xmlHttp_.send(this.baseUri_);\n  }\n\n  this.requestStartTime_ = goog.now();\n  this.ensureWatchDogTimer_();\n};\n\n\n/**\n * Cancels the request no matter what the underlying transport is.\n */\nChannelRequest.prototype.cancel = function() {\n  'use strict';\n  this.cancelled_ = true;\n  this.cleanup_();\n};\n\n\n/**\n * Resets the timeout.\n *\n * @param {number=} opt_timeout The new timeout\n */\nChannelRequest.prototype.resetTimeout = function(opt_timeout) {\n  'use strict';\n  if (opt_timeout) {\n    this.setTimeout(opt_timeout);\n  }\n  // restart only if a timer is currently set\n  if (this.watchDogTimerId_) {\n    this.cancelWatchDogTimer_();\n    this.ensureWatchDogTimer_();\n  }\n};\n\n\n/**\n * Ensures that there is watchdog timeout which is used to ensure that\n * the connection completes in time.\n *\n * @private\n */\nChannelRequest.prototype.ensureWatchDogTimer_ = function() {\n  'use strict';\n  this.watchDogTimeoutTime_ = goog.now() + this.timeout_;\n  this.startWatchDogTimer_(this.timeout_);\n};\n\n\n/**\n * Starts the watchdog timer which is used to ensure that the connection\n * completes in time.\n * @param {number} time The number of milliseconds to wait.\n * @private\n */\nChannelRequest.prototype.startWatchDogTimer_ = function(time) {\n  'use strict';\n  if (this.watchDogTimerId_ != null) {\n    // assertion\n    throw new Error('WatchDog timer not null');\n  }\n  this.watchDogTimerId_ =\n      requestStats.setTimeout(goog.bind(this.onWatchDogTimeout_, this), time);\n};\n\n\n/**\n * Cancels the watchdog timer if it has been started.\n *\n * @private\n */\nChannelRequest.prototype.cancelWatchDogTimer_ = function() {\n  'use strict';\n  if (this.watchDogTimerId_) {\n    goog.global.clearTimeout(this.watchDogTimerId_);\n    this.watchDogTimerId_ = null;\n  }\n};\n\n\n/**\n * Called when the watchdog timer is triggered. It also handles a case where it\n * is called too early which we suspect may be happening sometimes\n * (not sure why)\n *\n * @private\n */\nChannelRequest.prototype.onWatchDogTimeout_ = function() {\n  'use strict';\n  this.watchDogTimerId_ = null;\n  var now = goog.now();\n  goog.asserts.assert(\n      this.watchDogTimeoutTime_, 'WatchDog timeout time missing?');\n  if (now - this.watchDogTimeoutTime_ >= 0) {\n    this.handleTimeout_();\n  } else {\n    // got called too early for some reason\n    this.channelDebug_.warning('WatchDog timer called too early');\n    this.startWatchDogTimer_(this.watchDogTimeoutTime_ - now);\n  }\n};\n\n\n/**\n * Called when the request has actually timed out. Will cleanup and notify the\n * channel of the failure.\n *\n * @private\n */\nChannelRequest.prototype.handleTimeout_ = function() {\n  'use strict';\n  if (this.successful_) {\n    // Should never happen.\n    this.channelDebug_.severe(\n        'Received watchdog timeout even though request loaded successfully');\n  }\n\n  this.channelDebug_.timeoutResponse(this.requestUri_);\n\n  // IMG or SendBeacon requests never notice if they were successful,\n  // and always 'time out'. This fact says nothing about reachability.\n  if (this.type_ != ChannelRequest.Type_.CLOSE_REQUEST) {\n    requestStats.notifyServerReachabilityEvent(\n        requestStats.ServerReachability.REQUEST_FAILED);\n    requestStats.notifyStatEvent(requestStats.Stat.REQUEST_TIMEOUT);\n  }\n\n  this.cleanup_();\n\n  // Set error and dispatch failure.\n  // This is called for CLOSE_REQUEST too to ensure channel_.onRequestComplete.\n  this.lastError_ = ChannelRequest.Error.TIMEOUT;\n  this.dispatchFailure_();\n};\n\n\n/**\n * Notifies the channel that this request failed.\n * @private\n */\nChannelRequest.prototype.dispatchFailure_ = function() {\n  'use strict';\n  if (this.channel_.isClosed() || this.cancelled_) {\n    return;\n  }\n\n  this.channel_.onRequestComplete(this);\n};\n\n\n/**\n * Cleans up the objects used to make the request. This function is\n * idempotent.\n *\n * @private\n */\nChannelRequest.prototype.cleanup_ = function() {\n  'use strict';\n  this.cancelWatchDogTimer_();\n\n  goog.dispose(this.readyStateChangeThrottle_);\n  this.readyStateChangeThrottle_ = null;\n\n  // Stop the polling timer, if necessary.\n  this.pollingTimer_.stop();\n\n  // Unhook all event handlers.\n  this.eventHandler_.removeAll();\n\n  if (this.xmlHttp_) {\n    // clear out this.xmlHttp_ before aborting so we handle getting reentered\n    // inside abort\n    var xmlhttp = this.xmlHttp_;\n    this.xmlHttp_ = null;\n    xmlhttp.abort();\n    xmlhttp.dispose();\n  }\n};\n\n\n/**\n * Indicates whether the request was successful. Only valid after the handler\n * is called to indicate completion of the request.\n *\n * @return {boolean} True if the request succeeded.\n */\nChannelRequest.prototype.getSuccess = function() {\n  'use strict';\n  return this.successful_;\n};\n\n\n/**\n * If the request was not successful, returns the reason.\n *\n * @return {?ChannelRequest.Error}  The last error.\n */\nChannelRequest.prototype.getLastError = function() {\n  'use strict';\n  return this.lastError_;\n};\n\n\n/**\n * Returns the status code of the last request.\n * @return {number} The status code of the last request.\n */\nChannelRequest.prototype.getLastStatusCode = function() {\n  'use strict';\n  return this.lastStatusCode_;\n};\n\n\n/**\n * Returns the session id for this channel.\n *\n * @return {string|undefined} The session ID.\n */\nChannelRequest.prototype.getSessionId = function() {\n  'use strict';\n  return this.sid_;\n};\n\n\n/**\n * Returns the request id for this request. Each request has a unique request\n * id and the request IDs are a sequential increasing count.\n *\n * @return {string|number|undefined} The request ID.\n */\nChannelRequest.prototype.getRequestId = function() {\n  'use strict';\n  return this.rid_;\n};\n\n\n/**\n * Returns the data for a post, if this request is a post.\n *\n * @return {?string} The POST data provided by the request initiator.\n */\nChannelRequest.prototype.getPostData = function() {\n  'use strict';\n  return this.postData_;\n};\n\n\n/**\n * Returns the XhrIo request object.\n *\n * @return {?goog.net.XhrIo} Any XhrIo request created for this object.\n */\nChannelRequest.prototype.getXhr = function() {\n  'use strict';\n  return this.xmlHttp_;\n};\n\n\n/**\n * Returns the time that the request started, if it has started.\n *\n * @return {?number} The time the request started, as returned by goog.now().\n */\nChannelRequest.prototype.getRequestStartTime = function() {\n  'use strict';\n  return this.requestStartTime_;\n};\n\n\n/**\n * Helper to call the callback's onRequestData, which catches any\n * exception.\n * @param {string} data The request data.\n * @private\n */\nChannelRequest.prototype.safeOnRequestData_ = function(data) {\n  'use strict';\n  try {\n    this.channel_.onRequestData(this, data);\n    var stats = requestStats.ServerReachability;\n    requestStats.notifyServerReachabilityEvent(stats.BACK_CHANNEL_ACTIVITY);\n  } catch (e) {\n    // Dump debug info, but keep going without closing the channel.\n    this.channelDebug_.dumpException(e, 'Error in httprequest callback');\n  }\n};\n\n\n/**\n * Convenience factory method.\n *\n * @param {Channel} channel The channel object that owns this request.\n * @param {WebChannelDebug} channelDebug A WebChannelDebug to use for logging.\n * @param {string=} opt_sessionId  The session id for the channel.\n * @param {string|number=} opt_requestId  The request id for this request.\n * @param {number=} opt_retryId  The retry id for this request.\n * @return {!ChannelRequest} The created channel request.\n */\nChannelRequest.createChannelRequest = function(\n    channel, channelDebug, opt_sessionId, opt_requestId, opt_retryId) {\n  'use strict';\n  return new ChannelRequest(\n      channel, channelDebug, opt_sessionId, opt_requestId, opt_retryId);\n};\n});  // goog.scope\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview A single module to define user-agent specific environment\n * details.\n *\n */\n\ngoog.module('goog.labs.net.webChannel.environment');\n\ngoog.module.declareLegacyNamespace();\n\nvar userAgent = goog.require('goog.userAgent');\n\n\n/**\n * The default polling interval in millis for Edge.\n *\n * Currently on edge, new-chunk events may be not be fired (at all) if a new\n * chunk arrives within 50ms following the previous chunk. This may be fixed\n * in future, which requires changes to the whatwg spec too.\n *\n * @private @const {number}\n */\nvar EDGE_POLLING_INTERVAL_ = 125;\n\n\n/**\n * History:\n *\n * IE11 is still using Trident, the traditional engine for IE.\n * Edge is using EdgeHTML, a fork of Trident. We are seeing the same issue\n * on IE-11 (reported in 2017), so treat IE the same as Edge for now.\n *\n * We used to do polling for Opera (only) with an 250ms interval, because Opera\n * only fires readyState == INTERACTIVE once. Opera switched to WebKit in 2013,\n * and then to Blink (chrome).\n *\n * TODO(user): check the raw UA string to keep polling for old, mobile operas\n * that may still be affected. For old Opera, double the polling interval\n * to 250ms.\n *\n * @return {boolean} True if polling is required with XHR.\n */\nexports.isPollingRequired = function() {\n  return userAgent.EDGE_OR_IE;\n};\n\n\n/**\n * How often to poll (in MS) for changes to responseText in browsers that don't\n * fire onreadystatechange during incremental loading of the response body.\n *\n * @return {number|undefined} The polling interval (MS) for the current U-A;\n * or undefined if polling is not supposed to be enabled.\n */\nexports.getPollingInterval = function() {\n  if (userAgent.EDGE_OR_IE) {\n    return EDGE_POLLING_INTERVAL_;\n  }\n\n  return undefined;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Base WebChannel implementation.\n */\n\n\ngoog.provide('goog.labs.net.webChannel.WebChannelBase');\n\ngoog.require('goog.Uri');\ngoog.require('goog.array');\ngoog.require('goog.asserts');\ngoog.require('goog.async.run');\ngoog.require('goog.json');\ngoog.require('goog.labs.net.webChannel.Channel');\ngoog.require('goog.labs.net.webChannel.ChannelRequest');\ngoog.require('goog.labs.net.webChannel.ConnectionState');\ngoog.require('goog.labs.net.webChannel.ForwardChannelRequestPool');\ngoog.require('goog.labs.net.webChannel.WebChannelDebug');\ngoog.require('goog.labs.net.webChannel.Wire');\ngoog.require('goog.labs.net.webChannel.WireV8');\ngoog.require('goog.labs.net.webChannel.netUtils');\ngoog.require('goog.labs.net.webChannel.requestStats');\ngoog.require('goog.net.WebChannel');\ngoog.require('goog.net.XhrIo');\ngoog.require('goog.net.XmlHttpFactory');\ngoog.require('goog.net.rpc.HttpCors');\ngoog.require('goog.object');\ngoog.require('goog.string');\ngoog.require('goog.structs');\ngoog.requireType('goog.structs.Map');\n\ngoog.scope(function() {\n'use strict';\nvar WebChannel = goog.net.WebChannel;\nvar ChannelRequest = goog.labs.net.webChannel.ChannelRequest;\nvar ConnectionState = goog.labs.net.webChannel.ConnectionState;\nvar ForwardChannelRequestPool =\n    goog.labs.net.webChannel.ForwardChannelRequestPool;\nvar WebChannelDebug = goog.labs.net.webChannel.WebChannelDebug;\nvar Wire = goog.labs.net.webChannel.Wire;\nvar WireV8 = goog.labs.net.webChannel.WireV8;\nvar netUtils = goog.labs.net.webChannel.netUtils;\nvar requestStats = goog.labs.net.webChannel.requestStats;\n\nvar httpCors = goog.module.get('goog.net.rpc.HttpCors');\n\n/**\n * Gets an internal channel parameter in a type-safe way.\n *\n * @param {string} paramName the key of the parameter to fetch.\n * @param {!T} defaultValue the default value to return\n * @param {!goog.net.WebChannel.Options=} options Configuration for the\n *        WebChannel instance.\n * @return {T}\n * @template T\n */\nfunction getInternalChannelParam(paramName, defaultValue, options) {\n  if (!options || !options.internalChannelParams) {\n    return defaultValue;\n  }\n  return /** @type {T} */ (options.internalChannelParams[paramName]) ||\n      defaultValue;\n}\n\n/**\n * This WebChannel implementation is branched off goog.net.BrowserChannel\n * for now. Ongoing changes to goog.net.BrowserChannel will be back\n * ported to this implementation as needed.\n *\n * @param {!goog.net.WebChannel.Options=} opt_options Configuration for the\n *        WebChannel instance.\n * @param {number=} opt_clientVersion An application-specific version number\n *        that is sent to the server when connected.\n * @param {!ConnectionState=} opt_conn Previously determined connection\n *        conditions.\n * @constructor\n * @struct\n * @implements {goog.labs.net.webChannel.Channel}\n */\ngoog.labs.net.webChannel.WebChannelBase = function(\n    opt_options, opt_clientVersion, opt_conn) {\n  'use strict';\n  /**\n   * The client library version (capabilities).\n   * @private {number}\n   */\n  this.clientVersion_ = opt_clientVersion || 0;\n\n  /**\n   * The server library version (capabilities).\n   * @private {number}\n   */\n  this.serverVersion_ = 0;\n\n\n  /**\n   * An array of queued maps that need to be sent to the server.\n   * @private {!Array<Wire.QueuedMap>}\n   */\n  this.outgoingMaps_ = [];\n\n  /**\n   * The channel debug used for logging\n   * @private {!WebChannelDebug}\n   */\n  this.channelDebug_ = new WebChannelDebug();\n\n  /**\n   * Connectivity state.\n   * @private {!ConnectionState}\n   */\n  this.connState_ = opt_conn || new ConnectionState();\n\n  /**\n   * Extra HTTP headers to add to all the requests sent to the server.\n   * @private {?Object}\n   */\n  this.extraHeaders_ = null;\n\n  /**\n   * Extra HTTP headers to add to the init request(s) sent to the server.\n   * @private {?Object}\n   */\n  this.initHeaders_ = null;\n\n  /**\n   * @private {?string} The URL param name to overwrite custom HTTP headers\n   * to bypass CORS preflight.\n   */\n  this.httpHeadersOverwriteParam_ = null;\n\n  /**\n   * Extra parameters to add to all the requests sent to the server.\n   * @private {?Object}\n   */\n  this.extraParams_ = null;\n\n  /**\n   * Parameter name for the http session id.\n   * @private {?string}\n   */\n  this.httpSessionIdParam_ = null;\n\n  /**\n   * The http session id, to be sent with httpSessionIdParam_ with each\n   * request after the initial handshake.\n   * @private {?string}\n   */\n  this.httpSessionId_ = null;\n\n  /**\n   * The ChannelRequest object for the backchannel.\n   * @private {?ChannelRequest}\n   */\n  this.backChannelRequest_ = null;\n\n  /**\n   * The relative path (in the context of the page hosting the browser channel)\n   * for making requests to the server.\n   * @private {?string}\n   */\n  this.path_ = null;\n\n  /**\n   * The absolute URI for the forwardchannel request.\n   * @private {?goog.Uri}\n   */\n  this.forwardChannelUri_ = null;\n\n  /**\n   * The absolute URI for the backchannel request.\n   * @private {?goog.Uri}\n   */\n  this.backChannelUri_ = null;\n\n  /**\n   * A subdomain prefix for using a subdomain in IE for the backchannel\n   * requests.\n   * @private {?string}\n   */\n  this.hostPrefix_ = null;\n\n  /**\n   * Whether we allow the use of a subdomain in IE for the backchannel requests.\n   * @private {boolean}\n   */\n  this.allowHostPrefix_ = true;\n\n  /**\n   * The next id to use for the RID (request identifier) parameter. This\n   * identifier uniquely identifies the forward channel request.\n   * @private {number}\n   */\n  this.nextRid_ = 0;\n\n  /**\n   * The id to use for the next outgoing map. This identifier uniquely\n   * identifies a sent map.\n   * @private {number}\n   */\n  this.nextMapId_ = 0;\n\n  /**\n   * Whether to fail forward-channel requests after one try or a few tries.\n   * @private {boolean}\n   */\n  this.failFast_ = getInternalChannelParam('failFast', false, opt_options);\n\n  /**\n   * The handler that receive callbacks for state changes and data.\n   * @private {?goog.labs.net.webChannel.WebChannelBase.Handler}\n   */\n  this.handler_ = null;\n\n  /**\n   * Timer identifier for asynchronously making a forward channel request.\n   * This is set to true if the func is scheduled with async.run, which\n   * is equivalent to setTimeout(0).\n   * @private {?number|?boolean}\n   */\n  this.forwardChannelTimerId_ = null;\n\n  /**\n   * Timer identifier for asynchronously making a back channel request.\n   * @private {?number}\n   */\n  this.backChannelTimerId_ = null;\n\n  /**\n   * Timer identifier for the timer that waits for us to retry the backchannel\n   * in the case where it is dead and no longer receiving data.\n   * @private {?number}\n   */\n  this.deadBackChannelTimerId_ = null;\n\n  /**\n   * Whether the client's network conditions can support streamed responses.\n   * @private {?boolean}\n   */\n  this.enableStreaming_ = null;\n\n  /**\n   * Whether streaming mode is allowed. In certain debugging situations, it's\n   * useful to disable this.\n   * @private {boolean}\n   */\n  this.allowStreamingMode_ = true;\n\n  /**\n   * The array identifier of the last array received from the server for the\n   * backchannel request.\n   * @private {number}\n   */\n  this.lastArrayId_ = -1;\n\n  /**\n   * The array id of the last array sent by the server that we know about.\n   * @private {number}\n   */\n  this.lastPostResponseArrayId_ = -1;\n\n  /**\n   * The last status code received.\n   * @private {number}\n   */\n  this.lastStatusCode_ = -1;\n\n  /**\n   * Number of times we have retried the current forward channel request.\n   * @private {number}\n   */\n  this.forwardChannelRetryCount_ = 0;\n\n  /**\n   * Number of times in a row that we have retried the current back channel\n   * request and received no data.\n   * @private {number}\n   */\n  this.backChannelRetryCount_ = 0;\n\n  /**\n   * The attempt id for the current back channel request. Starts at 1 and\n   * increments for each reconnect. The server uses this to log if our\n   * connection is flaky or not.\n   * @private {number}\n   */\n  this.backChannelAttemptId_ = 0;\n\n  /**\n   * The base part of the time before firing next retry request. Default is 5\n   * seconds. Note that a random delay is added (see {@link retryDelaySeedMs_})\n   * for all retries, and linear backoff is applied to the sum for subsequent\n   * retries.\n   * @private {number}\n   */\n  this.baseRetryDelayMs_ =\n      getInternalChannelParam('baseRetryDelayMs', 5 * 1000, opt_options);\n\n  /**\n   * A random time between 0 and this number of MS is added to the\n   * {@link baseRetryDelayMs_}. Default is 10 seconds.\n   * @private {number}\n   */\n  this.retryDelaySeedMs_ =\n      getInternalChannelParam('retryDelaySeedMs', 10 * 1000, opt_options);\n\n  /**\n   * Maximum number of attempts to connect to the server for forward channel\n   * requests. Defaults to 2.\n   * @private {number}\n   */\n  this.forwardChannelMaxRetries_ =\n      getInternalChannelParam('forwardChannelMaxRetries', 2, opt_options);\n\n  /**\n   * The timeout in milliseconds for a forward channel request. Defaults to 20\n   * seconds. Note that part of this timeout can be randomized.\n   * @private {number}\n   */\n  this.forwardChannelRequestTimeoutMs_ = getInternalChannelParam(\n      'forwardChannelRequestTimeoutMs', 20 * 1000, opt_options);\n\n  /**\n   * The custom factory used to create XMLHttpRequest objects.\n   * @private {!goog.net.XmlHttpFactory | undefined}\n   */\n  this.xmlHttpFactory_ =\n      (opt_options && opt_options.xmlHttpFactory) || undefined;\n\n  /**\n   * The timeout in milliseconds for a back channel request. Defaults to using\n   * the timeout configured in ChannelRequest (45s). If server-side\n   * keepaliveInterval is known to the client, set the backchannel request\n   * timeout to 1.5 * keepaliveInterval (ms).\n   *\n   * @private {number|undefined}\n   */\n  this.backChannelRequestTimeoutMs_ = undefined;\n\n  /**\n   * A throttle time in ms for readystatechange events for the backchannel.\n   * Useful for throttling when ready state is INTERACTIVE (partial data).\n   *\n   * This throttle is useful if the server sends large data chunks down the\n   * backchannel.  It prevents examining XHR partial data on every readystate\n   * change event.  This is useful because large chunks can trigger hundreds\n   * of readystatechange events, each of which takes ~5ms or so to handle,\n   * in turn making the UI unresponsive for a significant period.\n   *\n   * If set to zero no throttle is used.\n   * @private {number}\n   */\n  this.readyStateChangeThrottleMs_ = 0;\n\n  /**\n   * Whether cross origin requests are supported for the channel.\n   *\n   * See {@link goog.net.XhrIo#setWithCredentials}.\n   * @private {boolean}\n   */\n  this.supportsCrossDomainXhrs_ =\n      (opt_options && opt_options.supportsCrossDomainXhr) || false;\n\n  /**\n   * The current session id.\n   * @private {string}\n   */\n  this.sid_ = '';\n\n  /**\n   * The current ChannelRequest pool for the forward channel.\n   * @private {!ForwardChannelRequestPool}\n   */\n  this.forwardChannelRequestPool_ = new ForwardChannelRequestPool(\n      opt_options && opt_options.concurrentRequestLimit);\n\n  /**\n   * The V8 codec.\n   * @private {!WireV8}\n   */\n  this.wireCodec_ = new WireV8();\n\n  /**\n   * Whether to turn on the fast handshake behavior.\n   *\n   * @private {boolean}\n   */\n  this.fastHandshake_ = (opt_options && opt_options.fastHandshake) || false;\n\n  /**\n   * Whether to signal to the server to enable blocking handshake.\n   *\n   * @private {boolean}\n   */\n  this.blockingHandshake_ =\n      (opt_options && opt_options.blockingHandshake) || false;\n\n\n  if (opt_options && opt_options.disableRedact) {\n    this.channelDebug_.disableRedact();\n  }\n\n  if (opt_options && opt_options.forceLongPolling) {\n    this.allowStreamingMode_ = false;\n  }\n\n  /**\n   * Whether to detect buffering proxies.\n   *\n   * fastHandshake + detectBufferingProxy are yet to be implemented.\n   *\n   * @private {boolean}\n   */\n  this.detectBufferingProxy_ =\n      (!this.fastHandshake_ && this.allowStreamingMode_ && opt_options &&\n       opt_options.detectBufferingProxy) ||\n      false;\n\n  /**\n   * Callback when all the pending client-sent messages have been flushed.\n   *\n   * @private {function()|undefined}\n   */\n  this.forwardChannelFlushedCallback_ = undefined;\n\n  /**\n   * TODO(user): move all backchannel states to its own class similar to\n   * forwardchannelrequestpool.js and log more stats.\n   *\n   * The estimated handshake RTT (ms) as measured from when the handshake\n   * request is sent and when the handshake response headers are received.\n   * If the value is 0, the RTT is unknown.\n   *\n   * @private {number}\n   */\n  this.handshakeRttMs_ = 0;\n\n  /**\n   * If BP detection is done or still in progress.\n   * Should only be checked when detectBufferingProxy is turned on.\n   * @private {boolean}\n   */\n  this.bpDetectionDone_ = false;\n\n  /**\n   * The timer for detecting buffering proxy. This needs be reset with each\n   * backchannel request. If this is not null, bpDetectionDone_ == false.\n   * @private {?number}\n   */\n  this.bpDetectionTimerId_ = null;\n\n  /**\n   * TODO(user): create a dedicated class for managing future origin trials.\n   *\n   * Whether to enable OTs that are implemented here.\n   * @private {boolean}\n   */\n  this.enableOriginTrials_ =\n      (opt_options && opt_options.enableOriginTrials) || false;\n\n  if (this.enableOriginTrials_) {\n    this.channelDebug_.info('Opt-in to enable Chrome Origin Trials.');\n    // To be implemented\n  }\n};\n\nvar WebChannelBase = goog.labs.net.webChannel.WebChannelBase;\n\n\n/**\n * The channel version that we negotiated with the server for this session.\n * Starts out as the version we request, and then is changed to the negotiated\n * version after the initial open.\n * @private {number}\n */\nWebChannelBase.prototype.channelVersion_ = Wire.LATEST_CHANNEL_VERSION;\n\n\n/**\n * Enum type for the channel state machine.\n * @enum {number}\n */\nWebChannelBase.State = {\n  /** The channel is closed. */\n  CLOSED: 0,\n\n  /** The channel has been initialized but hasn't yet initiated a connection. */\n  INIT: 1,\n\n  /** The channel is in the process of opening a connection to the server. */\n  OPENING: 2,\n\n  /** The channel is open. */\n  OPENED: 3\n};\n\n\n/**\n * The current state of the WebChannel.\n * @private {!WebChannelBase.State}\n */\nWebChannelBase.prototype.state_ = WebChannelBase.State.INIT;\n\n\n/**\n * The timeout in milliseconds for a forward channel request.\n * @type {number}\n */\nWebChannelBase.FORWARD_CHANNEL_RETRY_TIMEOUT = 20 * 1000;\n\n\n/**\n * Maximum number of attempts to connect to the server for back channel\n * requests.\n * @type {number}\n */\nWebChannelBase.BACK_CHANNEL_MAX_RETRIES = 3;\n\n\n/**\n * A number in MS of how long we guess the maxmium amount of time a round trip\n * to the server should take. In the future this could be substituted with a\n * real measurement of the RTT.\n * @type {number}\n */\nWebChannelBase.RTT_ESTIMATE = 3 * 1000;\n\n\n/**\n * When retrying for an inactive channel, we will multiply the total delay by\n * this number.\n * @type {number}\n */\nWebChannelBase.INACTIVE_CHANNEL_RETRY_FACTOR = 2;\n\n\n/**\n * Enum type for identifying an error.\n * @enum {number}\n */\nWebChannelBase.Error = {\n  /** Value that indicates no error has occurred. */\n  OK: 0,\n\n  /** An error due to a request failing. */\n  REQUEST_FAILED: 2,\n\n  /** An error due to the user being logged out. */\n  LOGGED_OUT: 4,\n\n  /** An error due to server response which contains no data. */\n  NO_DATA: 5,\n\n  /** An error due to a server response indicating an unknown session id */\n  UNKNOWN_SESSION_ID: 6,\n\n  /** An error due to a server response requesting to stop the channel. */\n  STOP: 7,\n\n  /** A general network error. */\n  NETWORK: 8,\n\n  /** An error due to bad data being returned from the server. */\n  BAD_DATA: 10,\n\n  /** An error due to a response that is not parsable. */\n  BAD_RESPONSE: 11\n};\n\n\n/**\n * Internal enum type for the two channel types.\n * @enum {number}\n * @private\n */\nWebChannelBase.ChannelType_ = {\n  FORWARD_CHANNEL: 1,\n\n  BACK_CHANNEL: 2\n};\n\n\n/**\n * The maximum number of maps that can be sent in one POST. Should match\n * MAX_MAPS_PER_REQUEST on the server code.\n * @type {number}\n * @private\n */\nWebChannelBase.MAX_MAPS_PER_REQUEST_ = 1000;\n\n\n/**\n * The maximum number of utf-8 chars that can be sent in one GET to enable 0-RTT\n * handshake.\n *\n *  @const @private {number}\n */\nWebChannelBase.MAX_CHARS_PER_GET_ = 4 * 1024;\n\n\n/**\n * A guess at a cutoff at which to no longer assume the backchannel is dead\n * when we are slow to receive data. Number in bytes.\n *\n * Assumption: The worst bandwidth we work on is 50 kilobits/sec\n * 50kbits/sec * (1 byte / 8 bits) * 6 sec dead backchannel timeout\n * @type {number}\n */\nWebChannelBase.OUTSTANDING_DATA_BACKCHANNEL_RETRY_CUTOFF = 37500;\n\n\n/**\n * @return {number} The server version or 0 if undefined\n */\nWebChannelBase.prototype.getServerVersion = function() {\n  'use strict';\n  return this.serverVersion_;\n};\n\n\n/**\n * @return {!ForwardChannelRequestPool} The forward channel request pool.\n */\nWebChannelBase.prototype.getForwardChannelRequestPool = function() {\n  'use strict';\n  return this.forwardChannelRequestPool_;\n};\n\n\n/**\n * @return {!Object} The codec object.\n */\nWebChannelBase.prototype.getWireCodec = function() {\n  'use strict';\n  return this.wireCodec_;\n};\n\n\n/**\n * Returns the logger.\n *\n * @return {!WebChannelDebug} The channel debug object.\n */\nWebChannelBase.prototype.getChannelDebug = function() {\n  'use strict';\n  return this.channelDebug_;\n};\n\n\n/**\n * Sets the logger.\n *\n * @param {!WebChannelDebug} channelDebug The channel debug object.\n */\nWebChannelBase.prototype.setChannelDebug = function(channelDebug) {\n  'use strict';\n  this.channelDebug_ = channelDebug;\n};\n\n\n/**\n * Starts the channel. This initiates connections to the server.\n *\n * @param {string} channelPath  The path for the channel connection.\n * @param {!Object=} opt_extraParams Extra parameter keys and values to add to\n *     the requests.\n * @param {string=} opt_oldSessionId  Session ID from a previous session.\n * @param {number=} opt_oldArrayId  The last array ID from a previous session.\n */\nWebChannelBase.prototype.connect = function(\n    channelPath, opt_extraParams, opt_oldSessionId, opt_oldArrayId) {\n  'use strict';\n  this.channelDebug_.debug('connect()');\n\n  requestStats.notifyStatEvent(requestStats.Stat.CONNECT_ATTEMPT);\n\n  this.path_ = channelPath;\n  this.extraParams_ = opt_extraParams || {};\n\n  // Attach parameters about the previous session if reconnecting.\n  if (opt_oldSessionId && opt_oldArrayId !== undefined) {\n    this.extraParams_['OSID'] = opt_oldSessionId;\n    this.extraParams_['OAID'] = opt_oldArrayId;\n  }\n\n  this.enableStreaming_ = this.allowStreamingMode_;\n  this.connectChannel_();\n};\n\n\n/**\n * Disconnects and closes the channel.\n */\nWebChannelBase.prototype.disconnect = function() {\n  'use strict';\n  this.channelDebug_.debug('disconnect()');\n\n  this.cancelRequests_();\n\n  if (this.state_ == WebChannelBase.State.OPENED) {\n    var rid = this.nextRid_++;\n    var uri = this.forwardChannelUri_.clone();\n    uri.setParameterValue('SID', this.sid_);\n    uri.setParameterValue('RID', rid);\n    uri.setParameterValue('TYPE', 'terminate');\n\n    // Add the reconnect parameters.\n    this.addAdditionalParams_(uri);\n\n    var request = ChannelRequest.createChannelRequest(\n        this, this.channelDebug_, this.sid_, rid);\n    request.sendCloseRequest(uri);\n  }\n\n  this.onClose_();\n};\n\n\n/**\n * Returns the session id of the channel. Only available after the\n * channel has been opened.\n * @return {string} Session ID.\n */\nWebChannelBase.prototype.getSessionId = function() {\n  'use strict';\n  return this.sid_;\n};\n\n\n/**\n * Starts the connection.\n * @private\n */\nWebChannelBase.prototype.connectChannel_ = function() {\n  'use strict';\n  this.channelDebug_.debug('connectChannel_()');\n  this.ensureInState_(WebChannelBase.State.INIT, WebChannelBase.State.CLOSED);\n  this.forwardChannelUri_ =\n      this.getForwardChannelUri(/** @type {string} */ (this.path_));\n  this.ensureForwardChannel_();\n};\n\n\n/**\n * Cancels backchannel request.\n * @private\n */\nWebChannelBase.prototype.cancelBackChannelRequest_ = function() {\n  'use strict';\n  if (this.backChannelRequest_) {\n    this.clearBpDetectionTimer_();\n    this.backChannelRequest_.cancel();\n    this.backChannelRequest_ = null;\n  }\n};\n\n\n/**\n * Cancels all outstanding requests.\n * @private\n */\nWebChannelBase.prototype.cancelRequests_ = function() {\n  'use strict';\n  this.cancelBackChannelRequest_();\n\n  if (this.backChannelTimerId_) {\n    goog.global.clearTimeout(this.backChannelTimerId_);\n    this.backChannelTimerId_ = null;\n  }\n\n  this.clearDeadBackchannelTimer_();\n\n  this.forwardChannelRequestPool_.cancel();\n\n  if (this.forwardChannelTimerId_) {\n    this.clearForwardChannelTimer_();\n  }\n};\n\n\n/**\n * Clears the forward channel timer.\n * @private\n */\nWebChannelBase.prototype.clearForwardChannelTimer_ = function() {\n  'use strict';\n  if (typeof this.forwardChannelTimerId_ === 'number') {\n    goog.global.clearTimeout(this.forwardChannelTimerId_);\n  }\n\n  this.forwardChannelTimerId_ = null;\n};\n\n\n/**\n * Returns the extra HTTP headers to add to all the requests sent to the server.\n *\n * @return {Object} The HTTP headers, or null.\n */\nWebChannelBase.prototype.getExtraHeaders = function() {\n  'use strict';\n  return this.extraHeaders_;\n};\n\n\n/**\n * Sets extra HTTP headers to add to all the requests sent to the server.\n *\n * @param {Object} extraHeaders The HTTP headers, or null.\n */\nWebChannelBase.prototype.setExtraHeaders = function(extraHeaders) {\n  'use strict';\n  this.extraHeaders_ = extraHeaders;\n};\n\n\n/**\n * Returns the extra HTTP headers to add to the init requests\n * sent to the server.\n *\n * @return {Object} The HTTP headers, or null.\n */\nWebChannelBase.prototype.getInitHeaders = function() {\n  'use strict';\n  return this.initHeaders_;\n};\n\n\n/**\n * Sets extra HTTP headers to add to the init requests sent to the server.\n *\n * @param {Object} initHeaders The HTTP headers, or null.\n */\nWebChannelBase.prototype.setInitHeaders = function(initHeaders) {\n  'use strict';\n  this.initHeaders_ = initHeaders;\n};\n\n\n/**\n * Sets the URL param name to overwrite custom HTTP headers.\n *\n * @param {string} httpHeadersOverwriteParam The URL param name.\n */\nWebChannelBase.prototype.setHttpHeadersOverwriteParam = function(\n    httpHeadersOverwriteParam) {\n  'use strict';\n  this.httpHeadersOverwriteParam_ = httpHeadersOverwriteParam;\n};\n\n\n/**\n * @override\n */\nWebChannelBase.prototype.setHttpSessionIdParam = function(httpSessionIdParam) {\n  'use strict';\n  this.httpSessionIdParam_ = httpSessionIdParam;\n};\n\n\n/**\n * @override\n */\nWebChannelBase.prototype.getHttpSessionIdParam = function() {\n  'use strict';\n  return this.httpSessionIdParam_;\n};\n\n\n/**\n * @override\n */\nWebChannelBase.prototype.setHttpSessionId = function(httpSessionId) {\n  'use strict';\n  this.httpSessionId_ = httpSessionId;\n};\n\n\n/**\n * @override\n */\nWebChannelBase.prototype.getHttpSessionId = function() {\n  'use strict';\n  return this.httpSessionId_;\n};\n\n\n/**\n * Sets the throttle for handling onreadystatechange events for the request.\n *\n * @param {number} throttle The throttle in ms.  A value of zero indicates\n *     no throttle.\n */\nWebChannelBase.prototype.setReadyStateChangeThrottle = function(throttle) {\n  'use strict';\n  this.readyStateChangeThrottleMs_ = throttle;\n};\n\n\n/**\n * Sets whether cross origin requests are supported for the channel.\n *\n * Setting this allows the creation of requests to secondary domains and\n * sends XHRs with the CORS withCredentials bit set to true.\n *\n * In order for cross-origin requests to work, the server will also need to set\n * CORS response headers as per:\n * https://developer.mozilla.org/en-US/docs/HTTP_access_control\n *\n * See {@link goog.net.XhrIo#setWithCredentials}.\n * @param {boolean} supportCrossDomain Whether cross domain XHRs are supported.\n */\nWebChannelBase.prototype.setSupportsCrossDomainXhrs = function(\n    supportCrossDomain) {\n  'use strict';\n  this.supportsCrossDomainXhrs_ = supportCrossDomain;\n};\n\n\n/**\n * Returns the handler used for channel callback events.\n *\n * @return {WebChannelBase.Handler} The handler.\n */\nWebChannelBase.prototype.getHandler = function() {\n  'use strict';\n  return this.handler_;\n};\n\n\n/**\n * Sets the handler used for channel callback events.\n * @param {WebChannelBase.Handler} handler The handler to set.\n */\nWebChannelBase.prototype.setHandler = function(handler) {\n  'use strict';\n  this.handler_ = handler;\n};\n\n\n/**\n * Returns whether the channel allows the use of a subdomain. There may be\n * cases where this isn't allowed.\n * @return {boolean} Whether a host prefix is allowed.\n */\nWebChannelBase.prototype.getAllowHostPrefix = function() {\n  'use strict';\n  return this.allowHostPrefix_;\n};\n\n\n/**\n * Sets whether the channel allows the use of a subdomain. There may be cases\n * where this isn't allowed, for example, logging in with troutboard where\n * using a subdomain causes Apache to force the user to authenticate twice.\n * @param {boolean} allowHostPrefix Whether a host prefix is allowed.\n */\nWebChannelBase.prototype.setAllowHostPrefix = function(allowHostPrefix) {\n  'use strict';\n  this.allowHostPrefix_ = allowHostPrefix;\n};\n\n\n/**\n * Returns whether the channel is buffered or not.  This may be\n * queried in the WebChannelBase.okToMakeRequest() callback.\n *\n * @return {boolean} Whether the channel is buffered.\n */\nWebChannelBase.prototype.isBuffered = function() {\n  'use strict';\n  return !this.enableStreaming_;\n};\n\n\n/**\n * Returns whether streaming mode is allowed. In certain debugging situations,\n * it's useful for the application to have a way to disable streaming mode for a\n * user.\n\n * @return {boolean} Whether streaming mode is allowed.\n */\nWebChannelBase.prototype.getAllowStreamingMode = function() {\n  'use strict';\n  return this.allowStreamingMode_;\n};\n\n\n/**\n * Sets whether streaming mode is allowed. In certain debugging situations, it's\n * useful for the application to have a way to disable streaming mode for a\n * user.\n * @param {boolean} allowStreamingMode  Whether streaming mode is allowed.\n */\nWebChannelBase.prototype.setAllowStreamingMode = function(allowStreamingMode) {\n  'use strict';\n  this.allowStreamingMode_ = allowStreamingMode;\n};\n\n\n/**\n * Sends a request to the server. The format of the request is a Map data\n * structure of key/value pairs. These maps are then encoded in a format\n * suitable for the wire and then reconstituted as a Map data structure that\n * the server can process.\n * @param {!Object|!goog.structs.Map} map The map to send.\n * @param {!Object=} opt_context The context associated with the map.\n */\nWebChannelBase.prototype.sendMap = function(map, opt_context) {\n  'use strict';\n  goog.asserts.assert(\n      this.state_ != WebChannelBase.State.CLOSED,\n      'Invalid operation: sending map when state is closed');\n\n  // We can only send 1000 maps per POST, but typically we should never have\n  // that much to send, so warn if we exceed that (we still send all the maps).\n  if (this.outgoingMaps_.length == WebChannelBase.MAX_MAPS_PER_REQUEST_) {\n    // severe() is temporary so that we get these uploaded and can figure out\n    // what's causing them. Afterwards can change to warning().\n    this.channelDebug_.severe(function() {\n      'use strict';\n      return 'Already have ' + WebChannelBase.MAX_MAPS_PER_REQUEST_ +\n          ' queued maps upon queueing ' + goog.json.serialize(map);\n    });\n  }\n\n  this.outgoingMaps_.push(\n      new Wire.QueuedMap(this.nextMapId_++, map, opt_context));\n\n  // Messages need be buffered during OPENING to avoid server-side race\n  if (this.state_ == WebChannelBase.State.OPENED) {\n    this.ensureForwardChannel_();\n  }\n};\n\n\n/**\n * When set to true, this changes the behavior of the forward channel so it\n * will not retry requests; it will fail after one network failure, and if\n * there was already one network failure, the request will fail immediately.\n * @param {boolean} failFast  Whether or not to fail fast.\n */\nWebChannelBase.prototype.setFailFast = function(failFast) {\n  'use strict';\n  this.failFast_ = failFast;\n  this.channelDebug_.info('setFailFast: ' + failFast);\n  if ((this.forwardChannelRequestPool_.hasPendingRequest() ||\n       this.forwardChannelTimerId_) &&\n      this.forwardChannelRetryCount_ > this.getForwardChannelMaxRetries()) {\n    var self = this;\n    this.channelDebug_.info(function() {\n      'use strict';\n      return 'Retry count ' + self.forwardChannelRetryCount_ +\n          ' > new maxRetries ' + self.getForwardChannelMaxRetries() +\n          '. Fail immediately!';\n    });\n\n    if (!this.forwardChannelRequestPool_.forceComplete(\n            goog.bind(this.onRequestComplete, this))) {\n      // i.e., this.forwardChannelTimerId_\n      this.clearForwardChannelTimer_();\n      // The error code from the last failed request is gone, so just use a\n      // generic one.\n      this.signalError_(WebChannelBase.Error.REQUEST_FAILED);\n    }\n  }\n};\n\n\n/**\n * @return {number} The max number of forward-channel retries, which will be 0\n * in fail-fast mode.\n */\nWebChannelBase.prototype.getForwardChannelMaxRetries = function() {\n  'use strict';\n  return this.failFast_ ? 0 : this.forwardChannelMaxRetries_;\n};\n\n\n/**\n * Sets the maximum number of attempts to connect to the server for forward\n * channel requests.\n * @param {number} retries The maximum number of attempts.\n */\nWebChannelBase.prototype.setForwardChannelMaxRetries = function(retries) {\n  'use strict';\n  this.forwardChannelMaxRetries_ = retries;\n};\n\n\n/**\n * Sets the timeout for a forward channel request.\n * @param {number} timeoutMs The timeout in milliseconds.\n */\nWebChannelBase.prototype.setForwardChannelRequestTimeout = function(timeoutMs) {\n  'use strict';\n  this.forwardChannelRequestTimeoutMs_ = timeoutMs;\n};\n\n\n/**\n * @return {number} The max number of back-channel retries, which is a constant.\n */\nWebChannelBase.prototype.getBackChannelMaxRetries = function() {\n  'use strict';\n  // Back-channel retries is a constant.\n  return WebChannelBase.BACK_CHANNEL_MAX_RETRIES;\n};\n\n\n/**\n * @override\n */\nWebChannelBase.prototype.isClosed = function() {\n  'use strict';\n  return this.state_ == WebChannelBase.State.CLOSED;\n};\n\n\n/**\n * Returns the channel state.\n * @return {WebChannelBase.State} The current state of the channel.\n */\nWebChannelBase.prototype.getState = function() {\n  'use strict';\n  return this.state_;\n};\n\n\n/**\n * Return the last status code received for a request.\n * @return {number} The last status code received for a request.\n */\nWebChannelBase.prototype.getLastStatusCode = function() {\n  'use strict';\n  return this.lastStatusCode_;\n};\n\n\n/**\n * @return {number} The last array id received.\n */\nWebChannelBase.prototype.getLastArrayId = function() {\n  'use strict';\n  return this.lastArrayId_;\n};\n\n\n/**\n * Returns whether there are outstanding requests servicing the channel.\n * @return {boolean} true if there are outstanding requests.\n */\nWebChannelBase.prototype.hasOutstandingRequests = function() {\n  'use strict';\n  return this.getOutstandingRequests_() != 0;\n};\n\n\n/**\n * Returns the number of outstanding requests.\n * @return {number} The number of outstanding requests to the server.\n * @private\n */\nWebChannelBase.prototype.getOutstandingRequests_ = function() {\n  'use strict';\n  var count = 0;\n  if (this.backChannelRequest_) {\n    count++;\n  }\n  count += this.forwardChannelRequestPool_.getRequestCount();\n  return count;\n};\n\n\n/**\n * Ensures that a forward channel request is scheduled.\n * @private\n */\nWebChannelBase.prototype.ensureForwardChannel_ = function() {\n  'use strict';\n  if (this.forwardChannelRequestPool_.isFull()) {\n    // enough connection in process - no need to start a new request\n    return;\n  }\n\n  if (this.forwardChannelTimerId_) {\n    // no need to start a new request - one is already scheduled\n    return;\n  }\n\n  // Use async.run instead of setTimeout(0) to avoid the 1s message delay\n  // from chrome/firefox background tabs\n  this.forwardChannelTimerId_ = true;\n  goog.async.run(this.onStartForwardChannelTimer_, this);\n\n  this.forwardChannelRetryCount_ = 0;\n};\n\n\n/**\n * Schedules a forward-channel retry for the specified request, unless the max\n * retries has been reached.\n * @param {!ChannelRequest} request The failed request to retry.\n * @return {boolean} true iff a retry was scheduled.\n * @private\n */\nWebChannelBase.prototype.maybeRetryForwardChannel_ = function(request) {\n  'use strict';\n  if (this.forwardChannelRequestPool_.getRequestCount() >=\n      this.forwardChannelRequestPool_.getMaxSize() -\n          (this.forwardChannelTimerId_ ? 1 : 0)) {\n    // Should be impossible to be called in this state.\n    this.channelDebug_.severe('Unexpected retry request is scheduled.');\n    return false;\n  }\n\n  if (this.forwardChannelTimerId_) {\n    this.channelDebug_.debug(\n        'Use the retry request that is already scheduled.');\n    this.outgoingMaps_ =\n        request.getPendingMessages().concat(this.outgoingMaps_);\n    return true;\n  }\n\n  // No retry for open_() and fail-fast\n  if (this.state_ == WebChannelBase.State.INIT ||\n      this.state_ == WebChannelBase.State.OPENING ||\n      (this.forwardChannelRetryCount_ >= this.getForwardChannelMaxRetries())) {\n    return false;\n  }\n\n  this.channelDebug_.debug('Going to retry POST');\n\n  this.forwardChannelTimerId_ = requestStats.setTimeout(\n      goog.bind(this.onStartForwardChannelTimer_, this, request),\n      this.getRetryTime_(this.forwardChannelRetryCount_));\n  this.forwardChannelRetryCount_++;\n  return true;\n};\n\n\n/**\n * Timer callback for ensureForwardChannel\n * @param {ChannelRequest=} opt_retryRequest A failed request\n * to retry.\n * @private\n */\nWebChannelBase.prototype.onStartForwardChannelTimer_ = function(\n    opt_retryRequest) {\n  'use strict';\n  // null is possible if scheduled with async.run\n  if (this.forwardChannelTimerId_) {\n    this.forwardChannelTimerId_ = null;\n    this.startForwardChannel_(opt_retryRequest);\n  }\n};\n\n\n/**\n * Begins a new forward channel operation to the server.\n * @param {ChannelRequest=} opt_retryRequest A failed request to retry.\n * @private\n */\nWebChannelBase.prototype.startForwardChannel_ = function(opt_retryRequest) {\n  'use strict';\n  this.channelDebug_.debug('startForwardChannel_');\n  if (!this.okToMakeRequest_()) {\n    return;  // channel is cancelled\n  } else if (this.state_ == WebChannelBase.State.INIT) {\n    if (opt_retryRequest) {\n      this.channelDebug_.severe('Not supposed to retry the open');\n      return;\n    }\n    this.open_();\n    this.state_ = WebChannelBase.State.OPENING;\n  } else if (this.state_ == WebChannelBase.State.OPENED) {\n    if (opt_retryRequest) {\n      this.makeForwardChannelRequest_(opt_retryRequest);\n      return;\n    }\n\n    if (this.outgoingMaps_.length == 0) {\n      this.channelDebug_.debug(\n          'startForwardChannel_ returned: ' +\n          'nothing to send');\n      // no need to start a new forward channel request\n      return;\n    }\n\n    if (this.forwardChannelRequestPool_.isFull()) {\n      // Should be impossible to be called in this state.\n      this.channelDebug_.severe(\n          'startForwardChannel_ returned: ' +\n          'connection already in progress');\n      return;\n    }\n\n    this.makeForwardChannelRequest_();\n    this.channelDebug_.debug('startForwardChannel_ finished, sent request');\n  }\n};\n\n\n/**\n * Establishes a new channel session with the server.\n * @private\n */\nWebChannelBase.prototype.open_ = function() {\n  'use strict';\n  this.channelDebug_.debug('open_()');\n  this.nextRid_ = Math.floor(Math.random() * 100000);\n\n  var rid = this.nextRid_++;\n  var request =\n      ChannelRequest.createChannelRequest(this, this.channelDebug_, '', rid);\n\n  // mix the init headers\n  var extraHeaders = this.extraHeaders_;\n  if (this.initHeaders_) {\n    if (extraHeaders) {\n      extraHeaders = goog.object.clone(extraHeaders);\n      goog.object.extend(extraHeaders, this.initHeaders_);\n    } else {\n      extraHeaders = this.initHeaders_;\n    }\n  }\n\n  if (this.httpHeadersOverwriteParam_ === null) {\n    request.setExtraHeaders(extraHeaders);\n  }\n\n  var requestText = this.dequeueOutgoingMaps_(\n      request,\n      this.fastHandshake_ ? this.getMaxNumMessagesForFastHandshake_() :\n                            WebChannelBase.MAX_MAPS_PER_REQUEST_);\n\n  var uri = this.forwardChannelUri_.clone();\n  uri.setParameterValue('RID', rid);\n\n  if (this.clientVersion_ > 0) {\n    uri.setParameterValue('CVER', this.clientVersion_);\n  }\n\n  // http-session-id to be generated as the response\n  if (this.getHttpSessionIdParam()) {\n    uri.setParameterValue(\n        WebChannel.X_HTTP_SESSION_ID, this.getHttpSessionIdParam());\n  }\n\n  // Add the reconnect parameters.\n  this.addAdditionalParams_(uri);\n\n  if (this.httpHeadersOverwriteParam_ && extraHeaders) {\n    httpCors.setHttpHeadersWithOverwriteParam(\n        uri, this.httpHeadersOverwriteParam_, extraHeaders);\n  }\n\n  this.forwardChannelRequestPool_.addRequest(request);\n\n  if (this.blockingHandshake_) {\n    uri.setParameterValue('TYPE', 'init');  // default to blocking in future\n  }\n\n  // Check the option and use GET to enable QUIC 0-RTT\n  if (this.fastHandshake_) {\n    uri.setParameterValue('$req', requestText);\n\n    // enable handshake upgrade\n    uri.setParameterValue('SID', 'null');\n    request.setDecodeInitialResponse();\n\n    request.xmlHttpPost(uri, null, true);  // Send as a GET\n  } else {\n    request.xmlHttpPost(uri, requestText, true);\n  }\n};\n\n\n/**\n * @return {number} The number of raw JSON messages to be encoded\n * with the fast-handshake (GET) request, including zero. If messages are not\n * encoded as raw JSON data, return WebChannelBase.MAX_MAPS_PER_REQUEST_\n * @private\n */\nWebChannelBase.prototype.getMaxNumMessagesForFastHandshake_ = function() {\n  'use strict';\n  var total = 0;\n  for (var i = 0; i < this.outgoingMaps_.length; i++) {\n    var map = this.outgoingMaps_[i];\n    var size = map.getRawDataSize();\n    if (size === undefined) {\n      break;\n    }\n    total += size;\n\n    if (total > WebChannelBase.MAX_CHARS_PER_GET_) {\n      return i;\n    }\n\n    if (total === WebChannelBase.MAX_CHARS_PER_GET_ ||\n        i === this.outgoingMaps_.length - 1) {\n      return i + 1;\n    }\n  }\n\n  return WebChannelBase.MAX_MAPS_PER_REQUEST_;\n};\n\n\n\n/**\n * Makes a forward channel request using XMLHTTP.\n * @param {!ChannelRequest=} opt_retryRequest A failed request to retry.\n * @private\n */\nWebChannelBase.prototype.makeForwardChannelRequest_ = function(\n    opt_retryRequest) {\n  'use strict';\n  var rid;\n  if (opt_retryRequest) {\n    rid = opt_retryRequest.getRequestId();  // Reuse the same RID for a retry\n  } else {\n    rid = this.nextRid_++;\n  }\n\n  var uri = this.forwardChannelUri_.clone();\n  uri.setParameterValue('SID', this.sid_);\n  uri.setParameterValue('RID', rid);\n  uri.setParameterValue('AID', this.lastArrayId_);\n  // Add the additional reconnect parameters.\n  this.addAdditionalParams_(uri);\n\n  if (this.httpHeadersOverwriteParam_ && this.extraHeaders_) {\n    httpCors.setHttpHeadersWithOverwriteParam(\n        uri, this.httpHeadersOverwriteParam_, this.extraHeaders_);\n  }\n\n  var request = ChannelRequest.createChannelRequest(\n      this, this.channelDebug_, this.sid_, rid,\n      this.forwardChannelRetryCount_ + 1);\n\n  if (this.httpHeadersOverwriteParam_ === null) {\n    request.setExtraHeaders(this.extraHeaders_);\n  }\n\n  var requestText;\n  if (opt_retryRequest) {\n    this.requeuePendingMaps_(opt_retryRequest);\n  }\n  requestText =\n      this.dequeueOutgoingMaps_(request, WebChannelBase.MAX_MAPS_PER_REQUEST_);\n\n  // Randomize from 50%-100% of the forward channel timeout to avoid\n  // a big hit if servers happen to die at once.\n  request.setTimeout(\n      Math.round(this.forwardChannelRequestTimeoutMs_ * 0.50) +\n      Math.round(this.forwardChannelRequestTimeoutMs_ * 0.50 * Math.random()));\n  this.forwardChannelRequestPool_.addRequest(request);\n  request.xmlHttpPost(uri, requestText, true);\n};\n\n\n/**\n * Adds the additional parameters from the handler to the given URI.\n * @param {!goog.Uri} uri The URI to add the parameters to.\n * @private\n */\nWebChannelBase.prototype.addAdditionalParams_ = function(uri) {\n  'use strict';\n  // Add the additional reconnect parameters as needed.\n  if (this.handler_) {\n    var params = this.handler_.getAdditionalParams(this);\n    if (params) {\n      goog.structs.forEach(params, function(value, key, coll) {\n        'use strict';\n        uri.setParameterValue(key, value);\n      });\n    }\n  }\n};\n\n\n/**\n * Returns the request text from the outgoing maps and resets it.\n * @param {!ChannelRequest} request The new request for sending the messages.\n * @param {number} maxNum The maximum number of messages to be encoded\n * @return {string} The encoded request text created from all the currently\n *                  queued outgoing maps.\n * @private\n */\nWebChannelBase.prototype.dequeueOutgoingMaps_ = function(request, maxNum) {\n  'use strict';\n  var count = Math.min(this.outgoingMaps_.length, maxNum);\n\n  var badMapHandler = this.handler_ ?\n      goog.bind(this.handler_.badMapError, this.handler_, this) :\n      null;\n  var result = this.wireCodec_.encodeMessageQueue(\n      this.outgoingMaps_, count, badMapHandler);\n\n  request.setPendingMessages(this.outgoingMaps_.splice(0, count));\n\n  return result;\n};\n\n\n/**\n * Requeues unacknowledged sent arrays for retransmission in the next forward\n * channel request.\n * @param {!ChannelRequest} retryRequest A failed request to retry.\n * @private\n */\nWebChannelBase.prototype.requeuePendingMaps_ = function(retryRequest) {\n  'use strict';\n  this.outgoingMaps_ =\n      retryRequest.getPendingMessages().concat(this.outgoingMaps_);\n};\n\n\n/**\n * Ensures there is a backchannel request for receiving data from the server.\n * @private\n */\nWebChannelBase.prototype.ensureBackChannel_ = function() {\n  'use strict';\n  if (this.backChannelRequest_) {\n    // already have one\n    return;\n  }\n\n  if (this.backChannelTimerId_) {\n    // no need to start a new request - one is already scheduled\n    return;\n  }\n\n  this.backChannelAttemptId_ = 1;\n\n  // Use async.run instead of setTimeout(0) to avoid the 1s message delay\n  // from chrome/firefox background tabs\n  // backChannelTimerId_ stays unset, as with setTimeout(0)\n  goog.async.run(this.onStartBackChannelTimer_, this);\n\n  this.backChannelRetryCount_ = 0;\n};\n\n\n/**\n * Schedules a back-channel retry, unless the max retries has been reached.\n * @return {boolean} true iff a retry was scheduled.\n * @private\n */\nWebChannelBase.prototype.maybeRetryBackChannel_ = function() {\n  'use strict';\n  if (this.backChannelRequest_ || this.backChannelTimerId_) {\n    // Should be impossible to be called in this state.\n    this.channelDebug_.severe('Request already in progress');\n    return false;\n  }\n\n  if (this.backChannelRetryCount_ >= this.getBackChannelMaxRetries()) {\n    return false;\n  }\n\n  this.channelDebug_.debug('Going to retry GET');\n\n  this.backChannelAttemptId_++;\n  this.backChannelTimerId_ = requestStats.setTimeout(\n      goog.bind(this.onStartBackChannelTimer_, this),\n      this.getRetryTime_(this.backChannelRetryCount_));\n  this.backChannelRetryCount_++;\n  return true;\n};\n\n\n/**\n * Timer callback for ensureBackChannel_.\n * @private\n */\nWebChannelBase.prototype.onStartBackChannelTimer_ = function() {\n  'use strict';\n  this.backChannelTimerId_ = null;\n  this.startBackChannel_();\n\n  if (!this.detectBufferingProxy_) {\n    return;\n  }\n\n  if (this.bpDetectionDone_) {\n    return;\n  }\n\n  if (this.backChannelRequest_ == null || this.handshakeRttMs_ <= 0) {\n    this.channelDebug_.warning(\n        'Skip bpDetectionTimerId_ ' + this.backChannelRequest_ + ' ' +\n        this.handshakeRttMs_);\n    return;\n  }\n\n  // This goes with each new request until bpDetectionDone_\n  var bpDetectionTimeout = 2 * this.handshakeRttMs_;\n  this.channelDebug_.info('BP detection timer enabled: ' + bpDetectionTimeout);\n\n  this.bpDetectionTimerId_ = requestStats.setTimeout(\n      goog.bind(this.onBpDetectionTimer_, this), bpDetectionTimeout);\n};\n\n\n/**\n * Timer callback for bpDetection.\n * @private\n */\nWebChannelBase.prototype.onBpDetectionTimer_ = function() {\n  'use strict';\n  if (!this.bpDetectionTimerId_) {\n    this.channelDebug_.warning('Invalid operation.');\n    return;\n  }\n\n  this.bpDetectionTimerId_ = null;\n  this.channelDebug_.info('BP detection timeout reached.');\n\n  goog.asserts.assert(\n      this.backChannelRequest_ != null,\n      'Invalid state: no backchannel request');\n\n  // We wait for extra response payload in addition to just headers to\n  // cancel the timer.\n  if (this.backChannelRequest_.getXhr() != null) {\n    var responseData = this.backChannelRequest_.getXhr().getResponseText();\n    if (responseData) {\n      this.channelDebug_.warning(\n          'Timer should have been cancelled : ' + responseData);\n    }\n  }\n\n  // Enable long-polling\n  this.channelDebug_.info(\n      'Buffering proxy detected and switch to long-polling!');\n  this.enableStreaming_ = false;\n\n  this.bpDetectionDone_ = true;\n  requestStats.notifyStatEvent(requestStats.Stat.PROXY);\n\n  // Cancel the request and start a new one immediately\n  this.cancelBackChannelRequest_();\n  this.startBackChannel_();\n};\n\n\n/**\n * Clears the timer for BP detection.\n * @private\n */\nWebChannelBase.prototype.clearBpDetectionTimer_ = function() {\n  'use strict';\n  if (this.bpDetectionTimerId_ != null) {\n    this.channelDebug_.debug('Cancel the BP detection timer.');\n    goog.global.clearTimeout(this.bpDetectionTimerId_);\n    this.bpDetectionTimerId_ = null;\n  }\n};\n\n\n/**\n * Begins a new back channel operation to the server.\n * @private\n */\nWebChannelBase.prototype.startBackChannel_ = function() {\n  'use strict';\n  if (!this.okToMakeRequest_()) {\n    // channel is cancelled\n    return;\n  }\n\n  this.channelDebug_.debug('Creating new HttpRequest');\n  this.backChannelRequest_ = ChannelRequest.createChannelRequest(\n      this, this.channelDebug_, this.sid_, 'rpc', this.backChannelAttemptId_);\n\n  if (this.httpHeadersOverwriteParam_ === null) {\n    this.backChannelRequest_.setExtraHeaders(this.extraHeaders_);\n  }\n\n  this.backChannelRequest_.setReadyStateChangeThrottle(\n      this.readyStateChangeThrottleMs_);\n  var uri = this.backChannelUri_.clone();\n  uri.setParameterValue('RID', 'rpc');\n  uri.setParameterValue('SID', this.sid_);\n  uri.setParameterValue('CI', this.enableStreaming_ ? '0' : '1');\n  uri.setParameterValue('AID', this.lastArrayId_);\n\n  // Add the reconnect parameters.\n  this.addAdditionalParams_(uri);\n\n  uri.setParameterValue('TYPE', 'xmlhttp');\n\n  if (this.httpHeadersOverwriteParam_ && this.extraHeaders_) {\n    httpCors.setHttpHeadersWithOverwriteParam(\n        uri, this.httpHeadersOverwriteParam_, this.extraHeaders_);\n  }\n\n  if (this.backChannelRequestTimeoutMs_) {\n    this.backChannelRequest_.setTimeout(this.backChannelRequestTimeoutMs_);\n  }\n\n  this.backChannelRequest_.xmlHttpGet(\n      uri, true /* decodeChunks */, this.hostPrefix_);\n\n  this.channelDebug_.debug('New Request created');\n};\n\n\n/**\n * Gives the handler a chance to return an error code and stop channel\n * execution. A handler might want to do this to check that the user is still\n * logged in, for example.\n * @private\n * @return {boolean} If it's OK to make a request.\n */\nWebChannelBase.prototype.okToMakeRequest_ = function() {\n  'use strict';\n  if (this.handler_) {\n    var result = this.handler_.okToMakeRequest(this);\n    if (result != WebChannelBase.Error.OK) {\n      this.channelDebug_.debug(\n          'Handler returned error code from okToMakeRequest');\n      this.signalError_(result);\n      return false;\n    }\n  }\n  return true;\n};\n\n\n/**\n * @override\n */\nWebChannelBase.prototype.onFirstByteReceived = function(request, responseText) {\n  'use strict';\n  if (this.backChannelRequest_ == request && this.detectBufferingProxy_) {\n    if (!this.bpDetectionDone_) {\n      this.channelDebug_.info(\n          'Great, no buffering proxy detected. Bytes received: ' +\n          responseText.length);\n      goog.asserts.assert(\n          this.bpDetectionTimerId_, 'Timer should not have been cancelled.');\n      this.clearBpDetectionTimer_();\n      this.bpDetectionDone_ = true;\n      requestStats.notifyStatEvent(requestStats.Stat.NOPROXY);\n    }\n  }\n};\n\n\n/**\n * @override\n */\nWebChannelBase.prototype.onRequestData = function(request, responseText) {\n  'use strict';\n  if (this.state_ == WebChannelBase.State.CLOSED ||\n      (this.backChannelRequest_ != request &&\n       !this.forwardChannelRequestPool_.hasRequest(request))) {\n    // either CLOSED or a request we don't know about (perhaps an old request)\n    return;\n  }\n  this.lastStatusCode_ = request.getLastStatusCode();\n\n  // first to check if request has been upgraded to backchannel\n  if (!request.isInitialResponseDecoded() &&\n      this.forwardChannelRequestPool_.hasRequest(request) &&\n      this.state_ == WebChannelBase.State.OPENED) {\n    var response;\n    try {\n      response = this.wireCodec_.decodeMessage(responseText);\n    } catch (ex) {\n      response = null;\n    }\n    if (Array.isArray(response) && response.length == 3) {\n      this.handlePostResponse_(/** @type {!Array<?>} */ (response), request);\n      this.onForwardChannelFlushed_();\n    } else {\n      this.channelDebug_.debug('Bad POST response data returned');\n      this.signalError_(WebChannelBase.Error.BAD_RESPONSE);\n    }\n  } else {\n    if (request.isInitialResponseDecoded() ||\n        this.backChannelRequest_ == request) {\n      this.clearDeadBackchannelTimer_();\n    }\n\n    if (!goog.string.isEmptyOrWhitespace(responseText)) {\n      var response = this.wireCodec_.decodeMessage(responseText);\n      this.onInput_(/** @type {!Array<?>} */ (response), request);\n    }\n  }\n};\n\n\n/**\n * Checks if we need call the flush callback.\n *\n * @private\n */\nWebChannelBase.prototype.onForwardChannelFlushed_ = function() {\n  'use strict';\n  if (this.forwardChannelRequestPool_.getRequestCount() <= 1) {\n    if (this.forwardChannelFlushedCallback_) {\n      try {\n        this.forwardChannelFlushedCallback_();\n      } catch (ex) {\n        this.channelDebug_.dumpException(\n            ex, 'Exception from forwardChannelFlushedCallback_ ');\n      }\n      // reset\n      this.forwardChannelFlushedCallback_ = undefined;\n    }\n  }\n};\n\n\n/**\n * Handles a POST response from the server.\n * @param {Array<number>} responseValues The key value pairs in\n *     the POST response.\n * @param {!ChannelRequest} forwardReq The forward channel request that\n * triggers this function call.\n * @private\n */\nWebChannelBase.prototype.handlePostResponse_ = function(\n    responseValues, forwardReq) {\n  'use strict';\n  // The first response value is set to 0 if server is missing backchannel.\n  if (responseValues[0] == 0) {\n    this.handleBackchannelMissing_(forwardReq);\n    return;\n  }\n  this.lastPostResponseArrayId_ = responseValues[1];\n  var outstandingArrays = this.lastPostResponseArrayId_ - this.lastArrayId_;\n  if (0 < outstandingArrays) {\n    var numOutstandingBackchannelBytes = responseValues[2];\n    this.channelDebug_.debug(\n        numOutstandingBackchannelBytes + ' bytes (in ' + outstandingArrays +\n        ' arrays) are outstanding on the BackChannel');\n    if (!this.shouldRetryBackChannel_(numOutstandingBackchannelBytes)) {\n      return;\n    }\n    if (!this.deadBackChannelTimerId_) {\n      // We expect to receive data within 2 RTTs or we retry the backchannel.\n      this.deadBackChannelTimerId_ = requestStats.setTimeout(\n          goog.bind(this.onBackChannelDead_, this),\n          2 * WebChannelBase.RTT_ESTIMATE);\n    }\n  }\n};\n\n\n/**\n * Handles a POST response from the server telling us that it has detected that\n * we have no hanging GET connection.\n * @param {!ChannelRequest} forwardReq The forward channel request that\n * triggers this function call.\n * @private\n */\nWebChannelBase.prototype.handleBackchannelMissing_ = function(forwardReq) {\n  'use strict';\n  // As long as the back channel was started before the POST was sent,\n  // we should retry the backchannel. We give a slight buffer of RTT_ESTIMATE\n  // so as not to excessively retry the backchannel\n  this.channelDebug_.debug('Server claims our backchannel is missing.');\n  if (this.backChannelTimerId_) {\n    this.channelDebug_.debug('But we are currently starting the request.');\n    return;\n  } else if (!this.backChannelRequest_) {\n    this.channelDebug_.warning('We do not have a BackChannel established');\n  } else if (\n      this.backChannelRequest_.getRequestStartTime() +\n          WebChannelBase.RTT_ESTIMATE <\n      forwardReq.getRequestStartTime()) {\n    this.clearDeadBackchannelTimer_();\n    this.cancelBackChannelRequest_();\n  } else {\n    return;\n  }\n  this.maybeRetryBackChannel_();\n  requestStats.notifyStatEvent(requestStats.Stat.BACKCHANNEL_MISSING);\n};\n\n\n/**\n * Determines whether we should start the process of retrying a possibly\n * dead backchannel.\n * @param {number} outstandingBytes The number of bytes for which the server has\n *     not yet received acknowledgement.\n * @return {boolean} Whether to start the backchannel retry timer.\n * @private\n */\nWebChannelBase.prototype.shouldRetryBackChannel_ = function(outstandingBytes) {\n  'use strict';\n  // Not too many outstanding bytes, not buffered and not after a retry.\n  return outstandingBytes <\n      WebChannelBase.OUTSTANDING_DATA_BACKCHANNEL_RETRY_CUTOFF &&\n      !this.isBuffered() && this.backChannelRetryCount_ == 0;\n};\n\n\n/**\n * Decides which host prefix should be used, if any.  If there is a handler,\n * allows the handler to validate a host prefix provided by the server, and\n * optionally override it.\n * @param {?string} serverHostPrefix The host prefix provided by the server.\n * @return {?string} The host prefix to actually use, if any. Will return null\n *     if the use of host prefixes was disabled via setAllowHostPrefix().\n * @override\n */\nWebChannelBase.prototype.correctHostPrefix = function(serverHostPrefix) {\n  'use strict';\n  if (this.allowHostPrefix_) {\n    if (this.handler_) {\n      return this.handler_.correctHostPrefix(serverHostPrefix);\n    }\n    return serverHostPrefix;\n  }\n  return null;\n};\n\n\n/**\n * Handles the timer that indicates that our backchannel is no longer able to\n * successfully receive data from the server.\n * @private\n */\nWebChannelBase.prototype.onBackChannelDead_ = function() {\n  'use strict';\n  if (this.deadBackChannelTimerId_ != null) {\n    this.deadBackChannelTimerId_ = null;\n    this.cancelBackChannelRequest_();\n    this.maybeRetryBackChannel_();\n    requestStats.notifyStatEvent(requestStats.Stat.BACKCHANNEL_DEAD);\n  }\n};\n\n\n/**\n * Clears the timer that indicates that our backchannel is no longer able to\n * successfully receive data from the server.\n * @private\n */\nWebChannelBase.prototype.clearDeadBackchannelTimer_ = function() {\n  'use strict';\n  if (this.deadBackChannelTimerId_ != null) {\n    goog.global.clearTimeout(this.deadBackChannelTimerId_);\n    this.deadBackChannelTimerId_ = null;\n  }\n};\n\n\n/**\n * Returns whether or not the given error/status combination is fatal or not.\n * On fatal errors we immediately close the session rather than retrying the\n * failed request.\n * @param {?ChannelRequest.Error} error The error code for the\n * failed request.\n * @param {number} statusCode The last HTTP status code.\n * @return {boolean} Whether or not the error is fatal.\n * @private\n */\nWebChannelBase.isFatalError_ = function(error, statusCode) {\n  'use strict';\n  return error == ChannelRequest.Error.UNKNOWN_SESSION_ID ||\n      (error == ChannelRequest.Error.STATUS && statusCode > 0);\n};\n\n\n/**\n * @override\n */\nWebChannelBase.prototype.onRequestComplete = function(request) {\n  'use strict';\n  this.channelDebug_.debug('Request complete');\n  var type;\n  var pendingMessages = null;\n  if (this.backChannelRequest_ == request) {\n    this.clearDeadBackchannelTimer_();\n    this.clearBpDetectionTimer_();\n    this.backChannelRequest_ = null;\n    type = WebChannelBase.ChannelType_.BACK_CHANNEL;\n  } else if (this.forwardChannelRequestPool_.hasRequest(request)) {\n    pendingMessages = request.getPendingMessages();\n    this.forwardChannelRequestPool_.removeRequest(request);\n    type = WebChannelBase.ChannelType_.FORWARD_CHANNEL;\n  } else {\n    // return if it was an old request from a previous session\n    return;\n  }\n\n  this.lastStatusCode_ = request.getLastStatusCode();\n\n  if (this.state_ == WebChannelBase.State.CLOSED) {\n    return;\n  }\n\n  if (request.getSuccess()) {\n    if (type == WebChannelBase.ChannelType_.FORWARD_CHANNEL) {\n      var size = request.getPostData() ? request.getPostData().length : 0;\n      requestStats.notifyTimingEvent(\n          size, goog.now() - request.getRequestStartTime(),\n          this.forwardChannelRetryCount_);\n      this.ensureForwardChannel_();\n      this.onSuccess_(request);\n    } else {  // i.e., back-channel\n      this.ensureBackChannel_();\n    }\n    return;\n  }\n  // Else unsuccessful. Fall through.\n\n  var lastError = request.getLastError();\n  if (!WebChannelBase.isFatalError_(lastError, this.lastStatusCode_)) {\n    // Maybe retry.\n    var self = this;\n    this.channelDebug_.debug(function() {\n      'use strict';\n      return 'Maybe retrying, last error: ' +\n          ChannelRequest.errorStringFromCode(lastError, self.lastStatusCode_);\n    });\n    if (type == WebChannelBase.ChannelType_.FORWARD_CHANNEL) {\n      if (this.maybeRetryForwardChannel_(request)) {\n        return;\n      }\n    }\n    if (type == WebChannelBase.ChannelType_.BACK_CHANNEL) {\n      if (this.maybeRetryBackChannel_()) {\n        return;\n      }\n    }\n    // Else exceeded max retries. Fall through.\n    this.channelDebug_.debug('Exceeded max number of retries');\n  } else {\n    // Else fatal error. Fall through and mark the pending maps as failed.\n    this.channelDebug_.debug('Not retrying due to error type');\n  }\n\n\n  // Abort the channel now\n\n  // Record pending messages from the failed request\n  if (pendingMessages && pendingMessages.length > 0) {\n    this.forwardChannelRequestPool_.addPendingMessages(pendingMessages);\n  }\n\n  this.channelDebug_.debug('Error: HTTP request failed');\n  switch (lastError) {\n    case ChannelRequest.Error.NO_DATA:\n      this.signalError_(WebChannelBase.Error.NO_DATA);\n      break;\n    case ChannelRequest.Error.BAD_DATA:\n      this.signalError_(WebChannelBase.Error.BAD_DATA);\n      break;\n    case ChannelRequest.Error.UNKNOWN_SESSION_ID:\n      this.signalError_(WebChannelBase.Error.UNKNOWN_SESSION_ID);\n      break;\n    default:\n      this.signalError_(WebChannelBase.Error.REQUEST_FAILED);\n      break;\n  }\n};\n\n\n/**\n * @param {number} retryCount Number of retries so far.\n * @return {number} Time in ms before firing next retry request.\n * @private\n */\nWebChannelBase.prototype.getRetryTime_ = function(retryCount) {\n  'use strict';\n  var retryTime = this.baseRetryDelayMs_ +\n      Math.floor(Math.random() * this.retryDelaySeedMs_);\n  if (!this.isActive()) {\n    this.channelDebug_.debug('Inactive channel');\n    retryTime = retryTime * WebChannelBase.INACTIVE_CHANNEL_RETRY_FACTOR;\n  }\n  // Backoff for subsequent retries\n  retryTime *= retryCount;\n  return retryTime;\n};\n\n\n/**\n * @param {number} baseDelayMs The base part of the retry delay, in ms.\n * @param {number} delaySeedMs A random delay between 0 and this is added to\n *     the base part.\n */\nWebChannelBase.prototype.setRetryDelay = function(baseDelayMs, delaySeedMs) {\n  'use strict';\n  this.baseRetryDelayMs_ = baseDelayMs;\n  this.retryDelaySeedMs_ = delaySeedMs;\n};\n\n\n/**\n * Apply any handshake control headers.\n * @param {!ChannelRequest} request The underlying request object\n * @private\n */\nWebChannelBase.prototype.applyControlHeaders_ = function(request) {\n  'use strict';\n  var xhr = request.getXhr();\n  if (xhr) {\n    var clientProtocol =\n        xhr.getStreamingResponseHeader(WebChannel.X_CLIENT_WIRE_PROTOCOL);\n    if (clientProtocol) {\n      this.forwardChannelRequestPool_.applyClientProtocol(clientProtocol);\n    }\n\n    if (this.getHttpSessionIdParam()) {\n      var httpSessionIdHeader =\n          xhr.getStreamingResponseHeader(WebChannel.X_HTTP_SESSION_ID);\n      if (httpSessionIdHeader) {\n        this.setHttpSessionId(httpSessionIdHeader);\n        // update the cached uri\n        var httpSessionIdParam = this.getHttpSessionIdParam();\n\n        this.forwardChannelUri_.setParameterValue(\n            /** @type {string} */ (httpSessionIdParam),  // never null\n            httpSessionIdHeader);\n      } else {\n        this.channelDebug_.warning(\n            'Missing X_HTTP_SESSION_ID in the handshake response');\n      }\n    }\n  }\n};\n\n\n/**\n * Processes the data returned by the server.\n * @param {!Array<!Array<?>>} respArray The response array returned\n *     by the server.\n * @param {!ChannelRequest} request The underlying request object\n * @private\n */\nWebChannelBase.prototype.onInput_ = function(respArray, request) {\n  'use strict';\n  var batch =\n      this.handler_ && this.handler_.channelHandleMultipleArrays ? [] : null;\n  for (var i = 0; i < respArray.length; i++) {\n    var nextArray = respArray[i];\n    this.lastArrayId_ = nextArray[0];\n    nextArray = nextArray[1];\n    if (this.state_ == WebChannelBase.State.OPENING) {\n      if (nextArray[0] == 'c') {\n        this.sid_ = nextArray[1];\n        this.hostPrefix_ = this.correctHostPrefix(nextArray[2]);\n\n        var negotiatedVersion = nextArray[3];\n        if (negotiatedVersion != null) {\n          this.channelVersion_ = negotiatedVersion;\n          this.channelDebug_.info('VER=' + this.channelVersion_);\n        }\n\n        var negotiatedServerVersion = nextArray[4];\n        if (negotiatedServerVersion != null) {\n          this.serverVersion_ = negotiatedServerVersion;\n          this.channelDebug_.info('SVER=' + this.serverVersion_);\n        }\n\n        // CVER=22\n        var serverKeepaliveMs = nextArray[5];\n        if (serverKeepaliveMs != null &&\n            typeof serverKeepaliveMs === 'number' && serverKeepaliveMs > 0) {\n          var timeout = 1.5 * serverKeepaliveMs;\n          this.backChannelRequestTimeoutMs_ = timeout;\n          this.channelDebug_.info('backChannelRequestTimeoutMs_=' + timeout);\n        }\n\n        this.applyControlHeaders_(request);\n\n        this.state_ = WebChannelBase.State.OPENED;\n        if (this.handler_) {\n          this.handler_.channelOpened(this);\n        }\n\n        if (this.detectBufferingProxy_) {\n          this.handshakeRttMs_ = goog.now() - request.getRequestStartTime();\n          this.channelDebug_.info(\n              'Handshake RTT: ' + this.handshakeRttMs_ + 'ms');\n        }\n\n        this.startBackchannelAfterHandshake_(request);\n\n        if (this.outgoingMaps_.length > 0) {\n          this.ensureForwardChannel_();\n        }\n      } else if (nextArray[0] == 'stop' || nextArray[0] == 'close') {\n        // treat close also as an abort\n        this.signalError_(WebChannelBase.Error.STOP);\n      }\n    } else if (this.state_ == WebChannelBase.State.OPENED) {\n      if (nextArray[0] == 'stop' || nextArray[0] == 'close') {\n        if (batch && !goog.array.isEmpty(batch)) {\n          this.handler_.channelHandleMultipleArrays(this, batch);\n          batch.length = 0;\n        }\n        if (nextArray[0] == 'stop') {\n          this.signalError_(WebChannelBase.Error.STOP);\n        } else {\n          this.disconnect();\n        }\n      } else if (nextArray[0] == 'noop') {\n        // ignore - noop to keep connection happy\n      } else {\n        if (batch) {\n          batch.push(nextArray);\n        } else if (this.handler_) {\n          this.handler_.channelHandleArray(this, nextArray);\n        }\n      }\n      // We have received useful data on the back-channel, so clear its retry\n      // count. We do this because back-channels by design do not complete\n      // quickly, so on a flaky connection we could have many fail to complete\n      // fully but still deliver a lot of data before they fail. We don't want\n      // to count such failures towards the retry limit, because we don't want\n      // to give up on a session if we can still receive data.\n      this.backChannelRetryCount_ = 0;\n    }\n  }\n  if (batch && !goog.array.isEmpty(batch)) {\n    this.handler_.channelHandleMultipleArrays(this, batch);\n  }\n};\n\n\n/**\n * Starts the backchannel after the handshake.\n *\n * @param {!ChannelRequest} request The underlying request object\n * @private\n */\nWebChannelBase.prototype.startBackchannelAfterHandshake_ = function(request) {\n  'use strict';\n  this.backChannelUri_ = this.getBackChannelUri(\n      this.hostPrefix_, /** @type {string} */ (this.path_));\n\n  if (request.isInitialResponseDecoded()) {\n    this.channelDebug_.debug('Upgrade the handshake request to a backchannel.');\n    this.forwardChannelRequestPool_.removeRequest(request);\n    request.resetTimeout(this.backChannelRequestTimeoutMs_);\n    this.backChannelRequest_ = request;\n  } else {\n    this.ensureBackChannel_();\n  }\n};\n\n\n/**\n * Helper to ensure the channel is in the expected state.\n * @param {...number} var_args The channel must be in one of the indicated\n *     states.\n * @private\n */\nWebChannelBase.prototype.ensureInState_ = function(var_args) {\n  'use strict';\n  goog.asserts.assert(\n      goog.array.contains(arguments, this.state_),\n      'Unexpected channel state: %s', this.state_);\n};\n\n\n/**\n * Signals an error has occurred.\n * @param {WebChannelBase.Error} error The error code for the failure.\n * @private\n */\nWebChannelBase.prototype.signalError_ = function(error) {\n  'use strict';\n  this.channelDebug_.info('Error code ' + error);\n  if (error == WebChannelBase.Error.REQUEST_FAILED) {\n    // Create a separate Internet connection to check\n    // if it's a server error or user's network error.\n    var imageUri = null;\n    if (this.handler_) {\n      imageUri = this.handler_.getNetworkTestImageUri(this);\n    }\n    netUtils.testNetwork(goog.bind(this.testNetworkCallback_, this), imageUri);\n  } else {\n    requestStats.notifyStatEvent(requestStats.Stat.ERROR_OTHER);\n  }\n  this.onError_(error);\n};\n\n\n/**\n * Callback for netUtils.testNetwork during error handling.\n * @param {boolean} networkUp Whether the network is up.\n * @private\n */\nWebChannelBase.prototype.testNetworkCallback_ = function(networkUp) {\n  'use strict';\n  if (networkUp) {\n    this.channelDebug_.info('Successfully pinged google.com');\n    requestStats.notifyStatEvent(requestStats.Stat.ERROR_OTHER);\n  } else {\n    this.channelDebug_.info('Failed to ping google.com');\n    requestStats.notifyStatEvent(requestStats.Stat.ERROR_NETWORK);\n    // Do not call onError_ again to eliminate duplicated Error events.\n  }\n};\n\n\n/**\n * Called when messages have been successfully sent from the queue.\n * @param {!ChannelRequest} request The request object\n * @private\n */\nWebChannelBase.prototype.onSuccess_ = function(request) {\n  'use strict';\n  if (this.handler_) {\n    this.handler_.channelSuccess(this, request);\n  }\n};\n\n\n/**\n * Called when we've determined the final error for a channel. It closes the\n * notifiers the handler of the error and closes the channel.\n * @param {WebChannelBase.Error} error  The error code for the failure.\n * @private\n */\nWebChannelBase.prototype.onError_ = function(error) {\n  'use strict';\n  this.channelDebug_.debug('HttpChannel: error - ' + error);\n  this.state_ = WebChannelBase.State.CLOSED;\n  if (this.handler_) {\n    this.handler_.channelError(this, error);\n  }\n  this.onClose_();\n  this.cancelRequests_();\n};\n\n\n/**\n * Called when the channel has been closed. It notifiers the handler of the\n * event, and reports any pending or undelivered maps.\n * @private\n */\nWebChannelBase.prototype.onClose_ = function() {\n  'use strict';\n  this.state_ = WebChannelBase.State.CLOSED;\n  this.lastStatusCode_ = -1;\n  if (this.handler_) {\n    var pendingMessages = this.forwardChannelRequestPool_.getPendingMessages();\n\n    if (pendingMessages.length == 0 && this.outgoingMaps_.length == 0) {\n      this.handler_.channelClosed(this);\n    } else {\n      var self = this;\n      this.channelDebug_.debug(function() {\n        'use strict';\n        return 'Number of undelivered maps' +\n            ', pending: ' + pendingMessages.length +\n            ', outgoing: ' + self.outgoingMaps_.length;\n      });\n\n      this.forwardChannelRequestPool_.clearPendingMessages();\n\n      var copyOfUndeliveredMaps = goog.array.clone(this.outgoingMaps_);\n      this.outgoingMaps_.length = 0;\n\n      this.handler_.channelClosed(this, pendingMessages, copyOfUndeliveredMaps);\n    }\n  }\n};\n\n\n/**\n * @override\n */\nWebChannelBase.prototype.getForwardChannelUri = function(path) {\n  'use strict';\n  var uri = this.createDataUri(null, path);\n  this.channelDebug_.debug('GetForwardChannelUri: ' + uri);\n  return uri;\n};\n\n\n/**\n * @override\n */\nWebChannelBase.prototype.getConnectionState = function() {\n  'use strict';\n  return this.connState_;\n};\n\n\n/**\n * @override\n */\nWebChannelBase.prototype.getBackChannelUri = function(hostPrefix, path) {\n  'use strict';\n  var uri = this.createDataUri(\n      this.shouldUseSecondaryDomains() ? hostPrefix : null, path);\n  this.channelDebug_.debug('GetBackChannelUri: ' + uri);\n  return uri;\n};\n\n\n/**\n * @override\n */\nWebChannelBase.prototype.createDataUri = function(\n    hostPrefix, path, opt_overridePort) {\n  'use strict';\n  var uri = goog.Uri.parse(path);\n  var uriAbsolute = (uri.getDomain() != '');\n  if (uriAbsolute) {\n    if (hostPrefix) {\n      uri.setDomain(hostPrefix + '.' + uri.getDomain());\n    }\n\n    uri.setPort(opt_overridePort || uri.getPort());\n  } else {\n    var locationPage = goog.global.location;\n    var hostName;\n    if (hostPrefix) {\n      hostName = hostPrefix + '.' + locationPage.hostname;\n    } else {\n      hostName = locationPage.hostname;\n    }\n\n    var port = opt_overridePort || +locationPage.port;\n\n    uri = goog.Uri.create(locationPage.protocol, null, hostName, port, path);\n  }\n\n  if (this.extraParams_) {\n    goog.object.forEach(this.extraParams_, function(value, key) {\n      'use strict';\n      uri.setParameterValue(key, value);\n    });\n  }\n\n  var param = this.getHttpSessionIdParam();\n  var value = this.getHttpSessionId();\n  if (param && value) {\n    uri.setParameterValue(param, value);\n  }\n\n  // Add the protocol version to the URI.\n  uri.setParameterValue('VER', this.channelVersion_);\n\n  // Add the reconnect parameters.\n  this.addAdditionalParams_(uri);\n\n  return uri;\n};\n\n\n/**\n * @override\n */\nWebChannelBase.prototype.createXhrIo = function(hostPrefix) {\n  'use strict';\n  if (hostPrefix && !this.supportsCrossDomainXhrs_) {\n    throw new Error('Can\\'t create secondary domain capable XhrIo object.');\n  }\n  var xhr = new goog.net.XhrIo(this.xmlHttpFactory_);\n  xhr.setWithCredentials(this.supportsCrossDomainXhrs_);\n  return xhr;\n};\n\n\n/**\n * @override\n */\nWebChannelBase.prototype.isActive = function() {\n  'use strict';\n  return !!this.handler_ && this.handler_.isActive(this);\n};\n\n\n/**\n * @override\n */\nWebChannelBase.prototype.shouldUseSecondaryDomains = function() {\n  'use strict';\n  return this.supportsCrossDomainXhrs_;\n};\n\n\n/**\n * Sets (overwrites) the forward channel flush callback.\n *\n * @param {function()} callback The callback to be invoked.\n */\nWebChannelBase.prototype.setForwardChannelFlushCallback = function(callback) {\n  'use strict';\n  this.forwardChannelFlushedCallback_ = callback;\n};\n\n\n/**\n * Abstract base class for the channel handler\n * @constructor\n * @struct\n */\nWebChannelBase.Handler = function() {};\n\n\n/**\n * Callback handler for when a batch of response arrays is received from the\n * server. When null, batched dispatching is disabled.\n * @type {?function(!WebChannelBase, !Array<!Array<?>>)}\n */\nWebChannelBase.Handler.prototype.channelHandleMultipleArrays = null;\n\n\n/**\n * Whether it's okay to make a request to the server. A handler can return\n * false if the channel should fail. For example, if the user has logged out,\n * the handler may want all requests to fail immediately.\n * @param {WebChannelBase} channel The channel.\n * @return {WebChannelBase.Error} An error code. The code should\n * return WebChannelBase.Error.OK to indicate it's okay. Any other\n * error code will cause a failure.\n */\nWebChannelBase.Handler.prototype.okToMakeRequest = function(channel) {\n  'use strict';\n  return WebChannelBase.Error.OK;\n};\n\n\n/**\n * Indicates the WebChannel has successfully negotiated with the server\n * and can now send and receive data.\n * @param {WebChannelBase} channel The channel.\n */\nWebChannelBase.Handler.prototype.channelOpened = function(channel) {};\n\n\n/**\n * New input is available for the application to process.\n *\n * @param {WebChannelBase} channel The channel.\n * @param {Array<?>} array The data array.\n */\nWebChannelBase.Handler.prototype.channelHandleArray = function(\n    channel, array) {};\n\n\n/**\n * Indicates messages that have been successfully sent on the channel.\n *\n * @param {WebChannelBase} channel The channel.\n * @param {!ChannelRequest} request The request object that contains\n *     the pending messages that have been successfully delivered to the server.\n */\nWebChannelBase.Handler.prototype.channelSuccess = function(channel, request) {};\n\n\n/**\n * Indicates an error occurred on the WebChannel.\n *\n * @param {WebChannelBase} channel The channel.\n * @param {WebChannelBase.Error} error The error code.\n */\nWebChannelBase.Handler.prototype.channelError = function(channel, error) {};\n\n\n/**\n * Indicates the WebChannel is closed. Also notifies about which maps,\n * if any, that may not have been delivered to the server.\n * @param {WebChannelBase} channel The channel.\n * @param {Array<Wire.QueuedMap>=} opt_pendingMaps The\n *     array of pending maps, which may or may not have been delivered to the\n *     server.\n * @param {Array<Wire.QueuedMap>=} opt_undeliveredMaps\n *     The array of undelivered maps, which have definitely not been delivered\n *     to the server.\n */\nWebChannelBase.Handler.prototype.channelClosed = function(\n    channel, opt_pendingMaps, opt_undeliveredMaps) {};\n\n\n/**\n * Gets any parameters that should be added at the time another connection is\n * made to the server.\n * @param {WebChannelBase} channel The channel.\n * @return {!Object} Extra parameter keys and values to add to the requests.\n */\nWebChannelBase.Handler.prototype.getAdditionalParams = function(channel) {\n  'use strict';\n  return {};\n};\n\n\n/**\n * Gets the URI of an image that can be used to test network connectivity.\n * @param {WebChannelBase} channel The channel.\n * @return {goog.Uri?} A custom URI to load for the network test.\n */\nWebChannelBase.Handler.prototype.getNetworkTestImageUri = function(channel) {\n  'use strict';\n  return null;\n};\n\n\n/**\n * Gets whether this channel is currently active. This is used to determine the\n * length of time to wait before retrying.\n * @param {WebChannelBase} channel The channel.\n * @return {boolean} Whether the channel is currently active.\n */\nWebChannelBase.Handler.prototype.isActive = function(channel) {\n  'use strict';\n  return true;\n};\n\n\n/**\n * Called by the channel if enumeration of the map throws an exception.\n * @param {WebChannelBase} channel The channel.\n * @param {Object} map The map that can't be enumerated.\n */\nWebChannelBase.Handler.prototype.badMapError = function(channel, map) {};\n\n\n/**\n * Allows the handler to override a host prefix provided by the server. Will\n * be called whenever the channel has received such a prefix and is considering\n * its use.\n * @param {?string} serverHostPrefix The host prefix provided by the server.\n * @return {?string} The host prefix the client should use.\n */\nWebChannelBase.Handler.prototype.correctHostPrefix = function(\n    serverHostPrefix) {\n  'use strict';\n  return serverHostPrefix;\n};\n});  // goog.scope\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Class for parsing and formatting URIs.\n *\n * This package is deprecated in favour of the Closure URL package (goog.url)\n * when manipulating URIs for use by a browser. This package uses regular\n * expressions to parse a potential URI which can fall out of sync with how a\n * browser will actually interpret the URI. See\n * `goog.uri.utils.setUrlPackageSupportLoggingHandler` for one way to identify\n * URIs that should instead be parsed using the URL package.\n *\n * Use goog.Uri(string) to parse a URI string.  Use goog.Uri.create(...) to\n * create a new instance of the goog.Uri object from Uri parts.\n *\n * e.g: <code>var myUri = new goog.Uri(window.location);</code>\n *\n * Implements RFC 3986 for parsing/formatting URIs.\n * http://www.ietf.org/rfc/rfc3986.txt\n *\n * Some changes have been made to the interface (more like .NETs), though the\n * internal representation is now of un-encoded parts, this will change the\n * behavior slightly.\n */\n\ngoog.provide('goog.Uri');\ngoog.provide('goog.Uri.QueryData');\n\ngoog.require('goog.array');\ngoog.require('goog.asserts');\ngoog.require('goog.string');\ngoog.require('goog.structs');\ngoog.require('goog.structs.Map');\ngoog.require('goog.uri.utils');\ngoog.require('goog.uri.utils.ComponentIndex');\ngoog.require('goog.uri.utils.StandardQueryParam');\n\n\n\n/**\n * This class contains setters and getters for the parts of the URI.\n * The <code>getXyz</code>/<code>setXyz</code> methods return the decoded part\n * -- so<code>goog.Uri.parse('/foo%20bar').getPath()</code> will return the\n * decoded path, <code>/foo bar</code>.\n *\n * Reserved characters (see RFC 3986 section 2.2) can be present in\n * their percent-encoded form in scheme, domain, and path URI components and\n * will not be auto-decoded. For example:\n * <code>goog.Uri.parse('rel%61tive/path%2fto/resource').getPath()</code> will\n * return <code>relative/path%2fto/resource</code>.\n *\n * The constructor accepts an optional unparsed, raw URI string.  The parser\n * is relaxed, so special characters that aren't escaped but don't cause\n * ambiguities will not cause parse failures.\n *\n * All setters return <code>this</code> and so may be chained, a la\n * <code>goog.Uri.parse('/foo').setFragment('part').toString()</code>.\n *\n * @param {*=} opt_uri Optional string URI to parse\n *        (use goog.Uri.create() to create a URI from parts), or if\n *        a goog.Uri is passed, a clone is created.\n * @param {boolean=} opt_ignoreCase If true, #getParameterValue will ignore\n * the case of the parameter name.\n *\n * @throws URIError If opt_uri is provided and URI is malformed (that is,\n *     if decodeURIComponent fails on any of the URI components).\n * @constructor\n * @struct\n */\ngoog.Uri = function(opt_uri, opt_ignoreCase) {\n  'use strict';\n  /**\n   * Scheme such as \"http\".\n   * @private {string}\n   */\n  this.scheme_ = '';\n\n  /**\n   * User credentials in the form \"username:password\".\n   * @private {string}\n   */\n  this.userInfo_ = '';\n\n  /**\n   * Domain part, e.g. \"www.google.com\".\n   * @private {string}\n   */\n  this.domain_ = '';\n\n  /**\n   * Port, e.g. 8080.\n   * @private {?number}\n   */\n  this.port_ = null;\n\n  /**\n   * Path, e.g. \"/tests/img.png\".\n   * @private {string}\n   */\n  this.path_ = '';\n\n  /**\n   * The fragment without the #.\n   * @private {string}\n   */\n  this.fragment_ = '';\n\n  /**\n   * Whether or not this Uri should be treated as Read Only.\n   * @private {boolean}\n   */\n  this.isReadOnly_ = false;\n\n  /**\n   * Whether or not to ignore case when comparing query params.\n   * @private {boolean}\n   */\n  this.ignoreCase_ = false;\n\n  /**\n   * Object representing query data.\n   * @private {!goog.Uri.QueryData}\n   */\n  this.queryData_;\n\n  // Parse in the uri string\n  var m;\n  if (opt_uri instanceof goog.Uri) {\n    this.ignoreCase_ = (opt_ignoreCase !== undefined) ? opt_ignoreCase :\n                                                        opt_uri.getIgnoreCase();\n    this.setScheme(opt_uri.getScheme());\n    this.setUserInfo(opt_uri.getUserInfo());\n    this.setDomain(opt_uri.getDomain());\n    this.setPort(opt_uri.getPort());\n    this.setPath(opt_uri.getPath());\n    this.setQueryData(opt_uri.getQueryData().clone());\n    this.setFragment(opt_uri.getFragment());\n  } else if (opt_uri && (m = goog.uri.utils.split(String(opt_uri)))) {\n    this.ignoreCase_ = !!opt_ignoreCase;\n\n    // Set the parts -- decoding as we do so.\n    // COMPATIBILITY NOTE - In IE, unmatched fields may be empty strings,\n    // whereas in other browsers they will be undefined.\n    this.setScheme(m[goog.uri.utils.ComponentIndex.SCHEME] || '', true);\n    this.setUserInfo(m[goog.uri.utils.ComponentIndex.USER_INFO] || '', true);\n    this.setDomain(m[goog.uri.utils.ComponentIndex.DOMAIN] || '', true);\n    this.setPort(m[goog.uri.utils.ComponentIndex.PORT]);\n    this.setPath(m[goog.uri.utils.ComponentIndex.PATH] || '', true);\n    this.setQueryData(m[goog.uri.utils.ComponentIndex.QUERY_DATA] || '', true);\n    this.setFragment(m[goog.uri.utils.ComponentIndex.FRAGMENT] || '', true);\n\n  } else {\n    this.ignoreCase_ = !!opt_ignoreCase;\n    this.queryData_ = new goog.Uri.QueryData(null, this.ignoreCase_);\n  }\n};\n\n\n/**\n * Parameter name added to stop caching.\n * @type {string}\n */\ngoog.Uri.RANDOM_PARAM = goog.uri.utils.StandardQueryParam.RANDOM;\n\n\n/**\n * @return {string} The string form of the url.\n * @override\n */\ngoog.Uri.prototype.toString = function() {\n  'use strict';\n  var out = [];\n\n  var scheme = this.getScheme();\n  if (scheme) {\n    out.push(\n        goog.Uri.encodeSpecialChars_(\n            scheme, goog.Uri.reDisallowedInSchemeOrUserInfo_, true),\n        ':');\n  }\n\n  var domain = this.getDomain();\n  if (domain || scheme == 'file') {\n    out.push('//');\n\n    var userInfo = this.getUserInfo();\n    if (userInfo) {\n      out.push(\n          goog.Uri.encodeSpecialChars_(\n              userInfo, goog.Uri.reDisallowedInSchemeOrUserInfo_, true),\n          '@');\n    }\n\n    out.push(goog.Uri.removeDoubleEncoding_(goog.string.urlEncode(domain)));\n\n    var port = this.getPort();\n    if (port != null) {\n      out.push(':', String(port));\n    }\n  }\n\n  var path = this.getPath();\n  if (path) {\n    if (this.hasDomain() && path.charAt(0) != '/') {\n      out.push('/');\n    }\n    out.push(goog.Uri.encodeSpecialChars_(\n        path,\n        path.charAt(0) == '/' ? goog.Uri.reDisallowedInAbsolutePath_ :\n                                goog.Uri.reDisallowedInRelativePath_,\n        true));\n  }\n\n  var query = this.getEncodedQuery();\n  if (query) {\n    out.push('?', query);\n  }\n\n  var fragment = this.getFragment();\n  if (fragment) {\n    out.push(\n        '#',\n        goog.Uri.encodeSpecialChars_(\n            fragment, goog.Uri.reDisallowedInFragment_));\n  }\n  return out.join('');\n};\n\n\n/**\n * Resolves the given relative URI (a goog.Uri object), using the URI\n * represented by this instance as the base URI.\n *\n * There are several kinds of relative URIs:<br>\n * 1. foo - replaces the last part of the path, the whole query and fragment<br>\n * 2. /foo - replaces the path, the query and fragment<br>\n * 3. //foo - replaces everything from the domain on.  foo is a domain name<br>\n * 4. ?foo - replace the query and fragment<br>\n * 5. #foo - replace the fragment only\n *\n * Additionally, if relative URI has a non-empty path, all \"..\" and \".\"\n * segments will be resolved, as described in RFC 3986.\n *\n * @param {!goog.Uri} relativeUri The relative URI to resolve.\n * @return {!goog.Uri} The resolved URI.\n */\ngoog.Uri.prototype.resolve = function(relativeUri) {\n  'use strict';\n  var absoluteUri = this.clone();\n\n  // we satisfy these conditions by looking for the first part of relativeUri\n  // that is not blank and applying defaults to the rest\n\n  var overridden = relativeUri.hasScheme();\n\n  if (overridden) {\n    absoluteUri.setScheme(relativeUri.getScheme());\n  } else {\n    overridden = relativeUri.hasUserInfo();\n  }\n\n  if (overridden) {\n    absoluteUri.setUserInfo(relativeUri.getUserInfo());\n  } else {\n    overridden = relativeUri.hasDomain();\n  }\n\n  if (overridden) {\n    absoluteUri.setDomain(relativeUri.getDomain());\n  } else {\n    overridden = relativeUri.hasPort();\n  }\n\n  var path = relativeUri.getPath();\n  if (overridden) {\n    absoluteUri.setPort(relativeUri.getPort());\n  } else {\n    overridden = relativeUri.hasPath();\n    if (overridden) {\n      // resolve path properly\n      if (path.charAt(0) != '/') {\n        // path is relative\n        if (this.hasDomain() && !this.hasPath()) {\n          // RFC 3986, section 5.2.3, case 1\n          path = '/' + path;\n        } else {\n          // RFC 3986, section 5.2.3, case 2\n          var lastSlashIndex = absoluteUri.getPath().lastIndexOf('/');\n          if (lastSlashIndex != -1) {\n            path = absoluteUri.getPath().substr(0, lastSlashIndex + 1) + path;\n          }\n        }\n      }\n      path = goog.Uri.removeDotSegments(path);\n    }\n  }\n\n  if (overridden) {\n    absoluteUri.setPath(path);\n  } else {\n    overridden = relativeUri.hasQuery();\n  }\n\n  if (overridden) {\n    absoluteUri.setQueryData(relativeUri.getQueryData().clone());\n  } else {\n    overridden = relativeUri.hasFragment();\n  }\n\n  if (overridden) {\n    absoluteUri.setFragment(relativeUri.getFragment());\n  }\n\n  return absoluteUri;\n};\n\n\n/**\n * Clones the URI instance.\n * @return {!goog.Uri} New instance of the URI object.\n */\ngoog.Uri.prototype.clone = function() {\n  'use strict';\n  return new goog.Uri(this);\n};\n\n\n/**\n * @return {string} The encoded scheme/protocol for the URI.\n */\ngoog.Uri.prototype.getScheme = function() {\n  'use strict';\n  return this.scheme_;\n};\n\n\n/**\n * Sets the scheme/protocol.\n * @throws URIError If opt_decode is true and newScheme is malformed (that is,\n *     if decodeURIComponent fails).\n * @param {string} newScheme New scheme value.\n * @param {boolean=} opt_decode Optional param for whether to decode new value.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setScheme = function(newScheme, opt_decode) {\n  'use strict';\n  this.enforceReadOnly();\n  this.scheme_ =\n      opt_decode ? goog.Uri.decodeOrEmpty_(newScheme, true) : newScheme;\n\n  // remove an : at the end of the scheme so somebody can pass in\n  // window.location.protocol\n  if (this.scheme_) {\n    this.scheme_ = this.scheme_.replace(/:$/, '');\n  }\n  return this;\n};\n\n\n/**\n * @return {boolean} Whether the scheme has been set.\n */\ngoog.Uri.prototype.hasScheme = function() {\n  'use strict';\n  return !!this.scheme_;\n};\n\n\n/**\n * @return {string} The decoded user info.\n */\ngoog.Uri.prototype.getUserInfo = function() {\n  'use strict';\n  return this.userInfo_;\n};\n\n\n/**\n * Sets the userInfo.\n * @throws URIError If opt_decode is true and newUserInfo is malformed (that is,\n *     if decodeURIComponent fails).\n * @param {string} newUserInfo New userInfo value.\n * @param {boolean=} opt_decode Optional param for whether to decode new value.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setUserInfo = function(newUserInfo, opt_decode) {\n  'use strict';\n  this.enforceReadOnly();\n  this.userInfo_ =\n      opt_decode ? goog.Uri.decodeOrEmpty_(newUserInfo) : newUserInfo;\n  return this;\n};\n\n\n/**\n * @return {boolean} Whether the user info has been set.\n */\ngoog.Uri.prototype.hasUserInfo = function() {\n  'use strict';\n  return !!this.userInfo_;\n};\n\n\n/**\n * @return {string} The decoded domain.\n */\ngoog.Uri.prototype.getDomain = function() {\n  'use strict';\n  return this.domain_;\n};\n\n\n/**\n * Sets the domain.\n * @throws URIError If opt_decode is true and newDomain is malformed (that is,\n *     if decodeURIComponent fails).\n * @param {string} newDomain New domain value.\n * @param {boolean=} opt_decode Optional param for whether to decode new value.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setDomain = function(newDomain, opt_decode) {\n  'use strict';\n  this.enforceReadOnly();\n  this.domain_ =\n      opt_decode ? goog.Uri.decodeOrEmpty_(newDomain, true) : newDomain;\n  return this;\n};\n\n\n/**\n * @return {boolean} Whether the domain has been set.\n */\ngoog.Uri.prototype.hasDomain = function() {\n  'use strict';\n  return !!this.domain_;\n};\n\n\n/**\n * @return {?number} The port number.\n */\ngoog.Uri.prototype.getPort = function() {\n  'use strict';\n  return this.port_;\n};\n\n\n/**\n * Sets the port number.\n * @param {*} newPort Port number. Will be explicitly casted to a number.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setPort = function(newPort) {\n  'use strict';\n  this.enforceReadOnly();\n\n  if (newPort) {\n    newPort = Number(newPort);\n    if (isNaN(newPort) || newPort < 0) {\n      throw new Error('Bad port number ' + newPort);\n    }\n    this.port_ = newPort;\n  } else {\n    this.port_ = null;\n  }\n\n  return this;\n};\n\n\n/**\n * @return {boolean} Whether the port has been set.\n */\ngoog.Uri.prototype.hasPort = function() {\n  'use strict';\n  return this.port_ != null;\n};\n\n\n/**\n * @return {string} The decoded path.\n */\ngoog.Uri.prototype.getPath = function() {\n  'use strict';\n  return this.path_;\n};\n\n\n/**\n * Sets the path.\n * @throws URIError If opt_decode is true and newPath is malformed (that is,\n *     if decodeURIComponent fails).\n * @param {string} newPath New path value.\n * @param {boolean=} opt_decode Optional param for whether to decode new value.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setPath = function(newPath, opt_decode) {\n  'use strict';\n  this.enforceReadOnly();\n  this.path_ = opt_decode ? goog.Uri.decodeOrEmpty_(newPath, true) : newPath;\n  return this;\n};\n\n\n/**\n * @return {boolean} Whether the path has been set.\n */\ngoog.Uri.prototype.hasPath = function() {\n  'use strict';\n  return !!this.path_;\n};\n\n\n/**\n * @return {boolean} Whether the query string has been set.\n */\ngoog.Uri.prototype.hasQuery = function() {\n  'use strict';\n  return this.queryData_.toString() !== '';\n};\n\n\n/**\n * Sets the query data.\n * @param {goog.Uri.QueryData|string|undefined} queryData QueryData object.\n * @param {boolean=} opt_decode Optional param for whether to decode new value.\n *     Applies only if queryData is a string.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setQueryData = function(queryData, opt_decode) {\n  'use strict';\n  this.enforceReadOnly();\n\n  if (queryData instanceof goog.Uri.QueryData) {\n    this.queryData_ = queryData;\n    this.queryData_.setIgnoreCase(this.ignoreCase_);\n  } else {\n    if (!opt_decode) {\n      // QueryData accepts encoded query string, so encode it if\n      // opt_decode flag is not true.\n      queryData = goog.Uri.encodeSpecialChars_(\n          queryData, goog.Uri.reDisallowedInQuery_);\n    }\n    this.queryData_ = new goog.Uri.QueryData(queryData, this.ignoreCase_);\n  }\n\n  return this;\n};\n\n\n/**\n * Sets the URI query.\n * @param {string} newQuery New query value.\n * @param {boolean=} opt_decode Optional param for whether to decode new value.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setQuery = function(newQuery, opt_decode) {\n  'use strict';\n  return this.setQueryData(newQuery, opt_decode);\n};\n\n\n/**\n * @return {string} The encoded URI query, not including the ?.\n */\ngoog.Uri.prototype.getEncodedQuery = function() {\n  'use strict';\n  return this.queryData_.toString();\n};\n\n\n/**\n * @return {string} The decoded URI query, not including the ?.\n */\ngoog.Uri.prototype.getDecodedQuery = function() {\n  'use strict';\n  return this.queryData_.toDecodedString();\n};\n\n\n/**\n * Returns the query data.\n * @return {!goog.Uri.QueryData} QueryData object.\n */\ngoog.Uri.prototype.getQueryData = function() {\n  'use strict';\n  return this.queryData_;\n};\n\n\n/**\n * @return {string} The encoded URI query, not including the ?.\n *\n * Warning: This method, unlike other getter methods, returns encoded\n * value, instead of decoded one.\n */\ngoog.Uri.prototype.getQuery = function() {\n  'use strict';\n  return this.getEncodedQuery();\n};\n\n\n/**\n * Sets the value of the named query parameters, clearing previous values for\n * that key.\n *\n * @param {string} key The parameter to set.\n * @param {*} value The new value. Value does not need to be encoded.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setParameterValue = function(key, value) {\n  'use strict';\n  this.enforceReadOnly();\n  this.queryData_.set(key, value);\n  return this;\n};\n\n\n/**\n * Sets the values of the named query parameters, clearing previous values for\n * that key.  Not new values will currently be moved to the end of the query\n * string.\n *\n * So, <code>goog.Uri.parse('foo?a=b&c=d&e=f').setParameterValues('c', ['new'])\n * </code> yields <tt>foo?a=b&e=f&c=new</tt>.</p>\n *\n * @param {string} key The parameter to set.\n * @param {*} values The new values. If values is a single\n *     string then it will be treated as the sole value. Values do not need to\n *     be encoded.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setParameterValues = function(key, values) {\n  'use strict';\n  this.enforceReadOnly();\n\n  if (!Array.isArray(values)) {\n    values = [String(values)];\n  }\n\n  this.queryData_.setValues(key, values);\n\n  return this;\n};\n\n\n/**\n * Returns the value<b>s</b> for a given cgi parameter as a list of decoded\n * query parameter values.\n * @param {string} name The parameter to get values for.\n * @return {!Array<?>} The values for a given cgi parameter as a list of\n *     decoded query parameter values.\n */\ngoog.Uri.prototype.getParameterValues = function(name) {\n  'use strict';\n  return this.queryData_.getValues(name);\n};\n\n\n/**\n * Returns the first value for a given cgi parameter or undefined if the given\n * parameter name does not appear in the query string.\n * @param {string} paramName Unescaped parameter name.\n * @return {string|undefined} The first value for a given cgi parameter or\n *     undefined if the given parameter name does not appear in the query\n *     string.\n */\ngoog.Uri.prototype.getParameterValue = function(paramName) {\n  'use strict';\n  return /** @type {string|undefined} */ (this.queryData_.get(paramName));\n};\n\n\n/**\n * @return {string} The URI fragment, not including the #.\n */\ngoog.Uri.prototype.getFragment = function() {\n  'use strict';\n  return this.fragment_;\n};\n\n\n/**\n * Sets the URI fragment.\n * @throws URIError If opt_decode is true and newFragment is malformed (that is,\n *     if decodeURIComponent fails).\n * @param {string} newFragment New fragment value.\n * @param {boolean=} opt_decode Optional param for whether to decode new value.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setFragment = function(newFragment, opt_decode) {\n  'use strict';\n  this.enforceReadOnly();\n  this.fragment_ =\n      opt_decode ? goog.Uri.decodeOrEmpty_(newFragment) : newFragment;\n  return this;\n};\n\n\n/**\n * @return {boolean} Whether the URI has a fragment set.\n */\ngoog.Uri.prototype.hasFragment = function() {\n  'use strict';\n  return !!this.fragment_;\n};\n\n\n/**\n * Returns true if this has the same domain as that of uri2.\n * @param {!goog.Uri} uri2 The URI object to compare to.\n * @return {boolean} true if same domain; false otherwise.\n */\ngoog.Uri.prototype.hasSameDomainAs = function(uri2) {\n  'use strict';\n  return ((!this.hasDomain() && !uri2.hasDomain()) ||\n          this.getDomain() == uri2.getDomain()) &&\n      ((!this.hasPort() && !uri2.hasPort()) ||\n       this.getPort() == uri2.getPort());\n};\n\n\n/**\n * Adds a random parameter to the Uri.\n * @return {!goog.Uri} Reference to this Uri object.\n */\ngoog.Uri.prototype.makeUnique = function() {\n  'use strict';\n  this.enforceReadOnly();\n  this.setParameterValue(goog.Uri.RANDOM_PARAM, goog.string.getRandomString());\n\n  return this;\n};\n\n\n/**\n * Removes the named query parameter.\n *\n * @param {string} key The parameter to remove.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.removeParameter = function(key) {\n  'use strict';\n  this.enforceReadOnly();\n  this.queryData_.remove(key);\n  return this;\n};\n\n\n/**\n * Sets whether Uri is read only. If this goog.Uri is read-only,\n * enforceReadOnly_ will be called at the start of any function that may modify\n * this Uri.\n * @param {boolean} isReadOnly whether this goog.Uri should be read only.\n * @return {!goog.Uri} Reference to this Uri object.\n */\ngoog.Uri.prototype.setReadOnly = function(isReadOnly) {\n  'use strict';\n  this.isReadOnly_ = isReadOnly;\n  return this;\n};\n\n\n/**\n * @return {boolean} Whether the URI is read only.\n */\ngoog.Uri.prototype.isReadOnly = function() {\n  'use strict';\n  return this.isReadOnly_;\n};\n\n\n/**\n * Checks if this Uri has been marked as read only, and if so, throws an error.\n * This should be called whenever any modifying function is called.\n */\ngoog.Uri.prototype.enforceReadOnly = function() {\n  'use strict';\n  if (this.isReadOnly_) {\n    throw new Error('Tried to modify a read-only Uri');\n  }\n};\n\n\n/**\n * Sets whether to ignore case.\n * NOTE: If there are already key/value pairs in the QueryData, and\n * ignoreCase_ is set to false, the keys will all be lower-cased.\n * @param {boolean} ignoreCase whether this goog.Uri should ignore case.\n * @return {!goog.Uri} Reference to this Uri object.\n */\ngoog.Uri.prototype.setIgnoreCase = function(ignoreCase) {\n  'use strict';\n  this.ignoreCase_ = ignoreCase;\n  if (this.queryData_) {\n    this.queryData_.setIgnoreCase(ignoreCase);\n  }\n  return this;\n};\n\n\n/**\n * @return {boolean} Whether to ignore case.\n */\ngoog.Uri.prototype.getIgnoreCase = function() {\n  'use strict';\n  return this.ignoreCase_;\n};\n\n\n//==============================================================================\n// Static members\n//==============================================================================\n\n\n/**\n * Creates a uri from the string form.  Basically an alias of new goog.Uri().\n * If a Uri object is passed to parse then it will return a clone of the object.\n *\n * @throws URIError If parsing the URI is malformed. The passed URI components\n *     should all be parseable by decodeURIComponent.\n * @param {*} uri Raw URI string or instance of Uri\n *     object.\n * @param {boolean=} opt_ignoreCase Whether to ignore the case of parameter\n * names in #getParameterValue.\n * @return {!goog.Uri} The new URI object.\n */\ngoog.Uri.parse = function(uri, opt_ignoreCase) {\n  'use strict';\n  return uri instanceof goog.Uri ? uri.clone() :\n                                   new goog.Uri(uri, opt_ignoreCase);\n};\n\n\n/**\n * Creates a new goog.Uri object from unencoded parts.\n *\n * @param {?string=} opt_scheme Scheme/protocol or full URI to parse.\n * @param {?string=} opt_userInfo username:password.\n * @param {?string=} opt_domain www.google.com.\n * @param {?number=} opt_port 9830.\n * @param {?string=} opt_path /some/path/to/a/file.html.\n * @param {string|goog.Uri.QueryData=} opt_query a=1&b=2.\n * @param {?string=} opt_fragment The fragment without the #.\n * @param {boolean=} opt_ignoreCase Whether to ignore parameter name case in\n *     #getParameterValue.\n *\n * @return {!goog.Uri} The new URI object.\n */\ngoog.Uri.create = function(\n    opt_scheme, opt_userInfo, opt_domain, opt_port, opt_path, opt_query,\n    opt_fragment, opt_ignoreCase) {\n  'use strict';\n  var uri = new goog.Uri(null, opt_ignoreCase);\n\n  // Only set the parts if they are defined and not empty strings.\n  opt_scheme && uri.setScheme(opt_scheme);\n  opt_userInfo && uri.setUserInfo(opt_userInfo);\n  opt_domain && uri.setDomain(opt_domain);\n  opt_port && uri.setPort(opt_port);\n  opt_path && uri.setPath(opt_path);\n  opt_query && uri.setQueryData(opt_query);\n  opt_fragment && uri.setFragment(opt_fragment);\n\n  return uri;\n};\n\n\n/**\n * Resolves a relative Uri against a base Uri, accepting both strings and\n * Uri objects.\n *\n * @param {*} base Base Uri.\n * @param {*} rel Relative Uri.\n * @return {!goog.Uri} Resolved uri.\n */\ngoog.Uri.resolve = function(base, rel) {\n  'use strict';\n  if (!(base instanceof goog.Uri)) {\n    base = goog.Uri.parse(base);\n  }\n\n  if (!(rel instanceof goog.Uri)) {\n    rel = goog.Uri.parse(rel);\n  }\n\n  return base.resolve(rel);\n};\n\n\n/**\n * Removes dot segments in given path component, as described in\n * RFC 3986, section 5.2.4.\n *\n * @param {string} path A non-empty path component.\n * @return {string} Path component with removed dot segments.\n */\ngoog.Uri.removeDotSegments = function(path) {\n  'use strict';\n  if (path == '..' || path == '.') {\n    return '';\n\n  } else if (\n      !goog.string.contains(path, './') && !goog.string.contains(path, '/.')) {\n    // This optimization detects uris which do not contain dot-segments,\n    // and as a consequence do not require any processing.\n    return path;\n\n  } else {\n    var leadingSlash = goog.string.startsWith(path, '/');\n    var segments = path.split('/');\n    var out = [];\n\n    for (var pos = 0; pos < segments.length;) {\n      var segment = segments[pos++];\n\n      if (segment == '.') {\n        if (leadingSlash && pos == segments.length) {\n          out.push('');\n        }\n      } else if (segment == '..') {\n        if (out.length > 1 || out.length == 1 && out[0] != '') {\n          out.pop();\n        }\n        if (leadingSlash && pos == segments.length) {\n          out.push('');\n        }\n      } else {\n        out.push(segment);\n        leadingSlash = true;\n      }\n    }\n\n    return out.join('/');\n  }\n};\n\n\n/**\n * Decodes a value or returns the empty string if it isn't defined or empty.\n * @throws URIError If decodeURIComponent fails to decode val.\n * @param {string|undefined} val Value to decode.\n * @param {boolean=} opt_preserveReserved If true, restricted characters will\n *     not be decoded.\n * @return {string} Decoded value.\n * @private\n */\ngoog.Uri.decodeOrEmpty_ = function(val, opt_preserveReserved) {\n  'use strict';\n  // Don't use UrlDecode() here because val is not a query parameter.\n  if (!val) {\n    return '';\n  }\n\n  // decodeURI has the same output for '%2f' and '%252f'. We double encode %25\n  // so that we can distinguish between the 2 inputs. This is later undone by\n  // removeDoubleEncoding_.\n  return opt_preserveReserved ? decodeURI(val.replace(/%25/g, '%2525')) :\n                                decodeURIComponent(val);\n};\n\n\n/**\n * If unescapedPart is non null, then escapes any characters in it that aren't\n * valid characters in a url and also escapes any special characters that\n * appear in extra.\n *\n * @param {*} unescapedPart The string to encode.\n * @param {RegExp} extra A character set of characters in [\\01-\\177].\n * @param {boolean=} opt_removeDoubleEncoding If true, remove double percent\n *     encoding.\n * @return {?string} null iff unescapedPart == null.\n * @private\n */\ngoog.Uri.encodeSpecialChars_ = function(\n    unescapedPart, extra, opt_removeDoubleEncoding) {\n  'use strict';\n  if (typeof unescapedPart === 'string') {\n    var encoded = encodeURI(unescapedPart).replace(extra, goog.Uri.encodeChar_);\n    if (opt_removeDoubleEncoding) {\n      // encodeURI double-escapes %XX sequences used to represent restricted\n      // characters in some URI components, remove the double escaping here.\n      encoded = goog.Uri.removeDoubleEncoding_(encoded);\n    }\n    return encoded;\n  }\n  return null;\n};\n\n\n/**\n * Converts a character in [\\01-\\177] to its unicode character equivalent.\n * @param {string} ch One character string.\n * @return {string} Encoded string.\n * @private\n */\ngoog.Uri.encodeChar_ = function(ch) {\n  'use strict';\n  var n = ch.charCodeAt(0);\n  return '%' + ((n >> 4) & 0xf).toString(16) + (n & 0xf).toString(16);\n};\n\n\n/**\n * Removes double percent-encoding from a string.\n * @param  {string} doubleEncodedString String\n * @return {string} String with double encoding removed.\n * @private\n */\ngoog.Uri.removeDoubleEncoding_ = function(doubleEncodedString) {\n  'use strict';\n  return doubleEncodedString.replace(/%25([0-9a-fA-F]{2})/g, '%$1');\n};\n\n\n/**\n * Regular expression for characters that are disallowed in the scheme or\n * userInfo part of the URI.\n * @type {RegExp}\n * @private\n */\ngoog.Uri.reDisallowedInSchemeOrUserInfo_ = /[#\\/\\?@]/g;\n\n\n/**\n * Regular expression for characters that are disallowed in a relative path.\n * Colon is included due to RFC 3986 3.3.\n * @type {RegExp}\n * @private\n */\ngoog.Uri.reDisallowedInRelativePath_ = /[\\#\\?:]/g;\n\n\n/**\n * Regular expression for characters that are disallowed in an absolute path.\n * @type {RegExp}\n * @private\n */\ngoog.Uri.reDisallowedInAbsolutePath_ = /[\\#\\?]/g;\n\n\n/**\n * Regular expression for characters that are disallowed in the query.\n * @type {RegExp}\n * @private\n */\ngoog.Uri.reDisallowedInQuery_ = /[\\#\\?@]/g;\n\n\n/**\n * Regular expression for characters that are disallowed in the fragment.\n * @type {RegExp}\n * @private\n */\ngoog.Uri.reDisallowedInFragment_ = /#/g;\n\n\n/**\n * Checks whether two URIs have the same domain.\n * @param {string} uri1String First URI string.\n * @param {string} uri2String Second URI string.\n * @return {boolean} true if the two URIs have the same domain; false otherwise.\n */\ngoog.Uri.haveSameDomain = function(uri1String, uri2String) {\n  'use strict';\n  // Differs from goog.uri.utils.haveSameDomain, since this ignores scheme.\n  // TODO(gboyer): Have this just call goog.uri.util.haveSameDomain.\n  var pieces1 = goog.uri.utils.split(uri1String);\n  var pieces2 = goog.uri.utils.split(uri2String);\n  return pieces1[goog.uri.utils.ComponentIndex.DOMAIN] ==\n      pieces2[goog.uri.utils.ComponentIndex.DOMAIN] &&\n      pieces1[goog.uri.utils.ComponentIndex.PORT] ==\n      pieces2[goog.uri.utils.ComponentIndex.PORT];\n};\n\n\n\n/**\n * Class used to represent URI query parameters.  It is essentially a hash of\n * name-value pairs, though a name can be present more than once.\n *\n * Has the same interface as the collections in goog.structs.\n *\n * @param {?string=} opt_query Optional encoded query string to parse into\n *     the object.\n * @param {boolean=} opt_ignoreCase If true, ignore the case of the parameter\n *     name in #get.\n * @constructor\n * @struct\n * @final\n */\ngoog.Uri.QueryData = function(opt_query, opt_ignoreCase) {\n  'use strict';\n  /**\n   * The map containing name/value or name/array-of-values pairs.\n   * May be null if it requires parsing from the query string.\n   *\n   * We need to use a Map because we cannot guarantee that the key names will\n   * not be problematic for IE.\n   *\n   * @private {?goog.structs.Map<string, !Array<*>>}\n   */\n  this.keyMap_ = null;\n\n  /**\n   * The number of params, or null if it requires computing.\n   * @private {?number}\n   */\n  this.count_ = null;\n\n  /**\n   * Encoded query string, or null if it requires computing from the key map.\n   * @private {?string}\n   */\n  this.encodedQuery_ = opt_query || null;\n\n  /**\n   * If true, ignore the case of the parameter name in #get.\n   * @private {boolean}\n   */\n  this.ignoreCase_ = !!opt_ignoreCase;\n};\n\n\n/**\n * If the underlying key map is not yet initialized, it parses the\n * query string and fills the map with parsed data.\n * @private\n */\ngoog.Uri.QueryData.prototype.ensureKeyMapInitialized_ = function() {\n  'use strict';\n  if (!this.keyMap_) {\n    this.keyMap_ = new goog.structs.Map();\n    this.count_ = 0;\n    if (this.encodedQuery_) {\n      var self = this;\n      goog.uri.utils.parseQueryData(this.encodedQuery_, function(name, value) {\n        'use strict';\n        self.add(goog.string.urlDecode(name), value);\n      });\n    }\n  }\n};\n\n\n/**\n * Creates a new query data instance from a map of names and values.\n *\n * @param {!goog.structs.Map<string, ?>|!Object} map Map of string parameter\n *     names to parameter value. If parameter value is an array, it is\n *     treated as if the key maps to each individual value in the\n *     array.\n * @param {boolean=} opt_ignoreCase If true, ignore the case of the parameter\n *     name in #get.\n * @return {!goog.Uri.QueryData} The populated query data instance.\n */\ngoog.Uri.QueryData.createFromMap = function(map, opt_ignoreCase) {\n  'use strict';\n  var keys = goog.structs.getKeys(map);\n  if (typeof keys == 'undefined') {\n    throw new Error('Keys are undefined');\n  }\n\n  var queryData = new goog.Uri.QueryData(null, opt_ignoreCase);\n  var values = goog.structs.getValues(map);\n  for (var i = 0; i < keys.length; i++) {\n    var key = keys[i];\n    var value = values[i];\n    if (!Array.isArray(value)) {\n      queryData.add(key, value);\n    } else {\n      queryData.setValues(key, value);\n    }\n  }\n  return queryData;\n};\n\n\n/**\n * Creates a new query data instance from parallel arrays of parameter names\n * and values. Allows for duplicate parameter names. Throws an error if the\n * lengths of the arrays differ.\n *\n * @param {!Array<string>} keys Parameter names.\n * @param {!Array<?>} values Parameter values.\n * @param {boolean=} opt_ignoreCase If true, ignore the case of the parameter\n *     name in #get.\n * @return {!goog.Uri.QueryData} The populated query data instance.\n */\ngoog.Uri.QueryData.createFromKeysValues = function(\n    keys, values, opt_ignoreCase) {\n  'use strict';\n  if (keys.length != values.length) {\n    throw new Error('Mismatched lengths for keys/values');\n  }\n  var queryData = new goog.Uri.QueryData(null, opt_ignoreCase);\n  for (var i = 0; i < keys.length; i++) {\n    queryData.add(keys[i], values[i]);\n  }\n  return queryData;\n};\n\n\n/**\n * @return {?number} The number of parameters.\n */\ngoog.Uri.QueryData.prototype.getCount = function() {\n  'use strict';\n  this.ensureKeyMapInitialized_();\n  return this.count_;\n};\n\n\n/**\n * Adds a key value pair.\n * @param {string} key Name.\n * @param {*} value Value.\n * @return {!goog.Uri.QueryData} Instance of this object.\n */\ngoog.Uri.QueryData.prototype.add = function(key, value) {\n  'use strict';\n  this.ensureKeyMapInitialized_();\n  this.invalidateCache_();\n\n  key = this.getKeyName_(key);\n  var values = this.keyMap_.get(key);\n  if (!values) {\n    this.keyMap_.set(key, (values = []));\n  }\n  values.push(value);\n  this.count_ = goog.asserts.assertNumber(this.count_) + 1;\n  return this;\n};\n\n\n/**\n * Removes all the params with the given key.\n * @param {string} key Name.\n * @return {boolean} Whether any parameter was removed.\n */\ngoog.Uri.QueryData.prototype.remove = function(key) {\n  'use strict';\n  this.ensureKeyMapInitialized_();\n\n  key = this.getKeyName_(key);\n  if (this.keyMap_.containsKey(key)) {\n    this.invalidateCache_();\n\n    // Decrement parameter count.\n    this.count_ =\n        goog.asserts.assertNumber(this.count_) - this.keyMap_.get(key).length;\n    return this.keyMap_.remove(key);\n  }\n  return false;\n};\n\n\n/**\n * Clears the parameters.\n */\ngoog.Uri.QueryData.prototype.clear = function() {\n  'use strict';\n  this.invalidateCache_();\n  this.keyMap_ = null;\n  this.count_ = 0;\n};\n\n\n/**\n * @return {boolean} Whether we have any parameters.\n */\ngoog.Uri.QueryData.prototype.isEmpty = function() {\n  'use strict';\n  this.ensureKeyMapInitialized_();\n  return this.count_ == 0;\n};\n\n\n/**\n * Whether there is a parameter with the given name\n * @param {string} key The parameter name to check for.\n * @return {boolean} Whether there is a parameter with the given name.\n */\ngoog.Uri.QueryData.prototype.containsKey = function(key) {\n  'use strict';\n  this.ensureKeyMapInitialized_();\n  key = this.getKeyName_(key);\n  return this.keyMap_.containsKey(key);\n};\n\n\n/**\n * Whether there is a parameter with the given value.\n * @param {*} value The value to check for.\n * @return {boolean} Whether there is a parameter with the given value.\n */\ngoog.Uri.QueryData.prototype.containsValue = function(value) {\n  'use strict';\n  // NOTE(arv): This solution goes through all the params even if it was the\n  // first param. We can get around this by not reusing code or by switching to\n  // iterators.\n  var vals = this.getValues();\n  return goog.array.contains(vals, value);\n};\n\n\n/**\n * Runs a callback on every key-value pair in the map, including duplicate keys.\n * This won't maintain original order when duplicate keys are interspersed (like\n * getKeys() / getValues()).\n * @param {function(this:SCOPE, ?, string, !goog.Uri.QueryData)} f\n * @param {SCOPE=} opt_scope The value of \"this\" inside f.\n * @template SCOPE\n */\ngoog.Uri.QueryData.prototype.forEach = function(f, opt_scope) {\n  'use strict';\n  this.ensureKeyMapInitialized_();\n  this.keyMap_.forEach(function(values, key) {\n    'use strict';\n    goog.array.forEach(values, function(value) {\n      'use strict';\n      f.call(opt_scope, value, key, this);\n    }, this);\n  }, this);\n};\n\n\n/**\n * Returns all the keys of the parameters. If a key is used multiple times\n * it will be included multiple times in the returned array\n * @return {!Array<string>} All the keys of the parameters.\n */\ngoog.Uri.QueryData.prototype.getKeys = function() {\n  'use strict';\n  this.ensureKeyMapInitialized_();\n  // We need to get the values to know how many keys to add.\n  var vals = this.keyMap_.getValues();\n  var keys = this.keyMap_.getKeys();\n  var rv = [];\n  for (var i = 0; i < keys.length; i++) {\n    var val = vals[i];\n    for (var j = 0; j < val.length; j++) {\n      rv.push(keys[i]);\n    }\n  }\n  return rv;\n};\n\n\n/**\n * Returns all the values of the parameters with the given name. If the query\n * data has no such key this will return an empty array. If no key is given\n * all values wil be returned.\n * @param {string=} opt_key The name of the parameter to get the values for.\n * @return {!Array<?>} All the values of the parameters with the given name.\n */\ngoog.Uri.QueryData.prototype.getValues = function(opt_key) {\n  'use strict';\n  this.ensureKeyMapInitialized_();\n  var rv = [];\n  if (typeof opt_key === 'string') {\n    if (this.containsKey(opt_key)) {\n      rv = goog.array.concat(rv, this.keyMap_.get(this.getKeyName_(opt_key)));\n    }\n  } else {\n    // Return all values.\n    var values = this.keyMap_.getValues();\n    for (var i = 0; i < values.length; i++) {\n      rv = goog.array.concat(rv, values[i]);\n    }\n  }\n  return rv;\n};\n\n\n/**\n * Sets a key value pair and removes all other keys with the same value.\n *\n * @param {string} key Name.\n * @param {*} value Value.\n * @return {!goog.Uri.QueryData} Instance of this object.\n */\ngoog.Uri.QueryData.prototype.set = function(key, value) {\n  'use strict';\n  this.ensureKeyMapInitialized_();\n  this.invalidateCache_();\n\n  // TODO(chrishenry): This could be better written as\n  // this.remove(key), this.add(key, value), but that would reorder\n  // the key (since the key is first removed and then added at the\n  // end) and we would have to fix unit tests that depend on key\n  // ordering.\n  key = this.getKeyName_(key);\n  if (this.containsKey(key)) {\n    this.count_ =\n        goog.asserts.assertNumber(this.count_) - this.keyMap_.get(key).length;\n  }\n  this.keyMap_.set(key, [value]);\n  this.count_ = goog.asserts.assertNumber(this.count_) + 1;\n  return this;\n};\n\n\n/**\n * Returns the first value associated with the key. If the query data has no\n * such key this will return undefined or the optional default.\n * @param {string} key The name of the parameter to get the value for.\n * @param {*=} opt_default The default value to return if the query data\n *     has no such key.\n * @return {*} The first string value associated with the key, or opt_default\n *     if there's no value.\n */\ngoog.Uri.QueryData.prototype.get = function(key, opt_default) {\n  'use strict';\n  if (!key) {\n    return opt_default;\n  }\n  var values = this.getValues(key);\n  return values.length > 0 ? String(values[0]) : opt_default;\n};\n\n\n/**\n * Sets the values for a key. If the key already exists, this will\n * override all of the existing values that correspond to the key.\n * @param {string} key The key to set values for.\n * @param {!Array<?>} values The values to set.\n */\ngoog.Uri.QueryData.prototype.setValues = function(key, values) {\n  'use strict';\n  this.remove(key);\n\n  if (values.length > 0) {\n    this.invalidateCache_();\n    this.keyMap_.set(this.getKeyName_(key), goog.array.clone(values));\n    this.count_ = goog.asserts.assertNumber(this.count_) + values.length;\n  }\n};\n\n\n/**\n * @return {string} Encoded query string.\n * @override\n */\ngoog.Uri.QueryData.prototype.toString = function() {\n  'use strict';\n  if (this.encodedQuery_) {\n    return this.encodedQuery_;\n  }\n\n  if (!this.keyMap_) {\n    return '';\n  }\n\n  var sb = [];\n\n  // In the past, we use this.getKeys() and this.getVals(), but that\n  // generates a lot of allocations as compared to simply iterating\n  // over the keys.\n  var keys = this.keyMap_.getKeys();\n  for (var i = 0; i < keys.length; i++) {\n    var key = keys[i];\n    var encodedKey = goog.string.urlEncode(key);\n    var val = this.getValues(key);\n    for (var j = 0; j < val.length; j++) {\n      var param = encodedKey;\n      // Ensure that null and undefined are encoded into the url as\n      // literal strings.\n      if (val[j] !== '') {\n        param += '=' + goog.string.urlEncode(val[j]);\n      }\n      sb.push(param);\n    }\n  }\n\n  return this.encodedQuery_ = sb.join('&');\n};\n\n\n/**\n * @throws URIError If URI is malformed (that is, if decodeURIComponent fails on\n *     any of the URI components).\n * @return {string} Decoded query string.\n */\ngoog.Uri.QueryData.prototype.toDecodedString = function() {\n  'use strict';\n  return goog.Uri.decodeOrEmpty_(this.toString());\n};\n\n\n/**\n * Invalidate the cache.\n * @private\n */\ngoog.Uri.QueryData.prototype.invalidateCache_ = function() {\n  'use strict';\n  this.encodedQuery_ = null;\n};\n\n\n/**\n * Removes all keys that are not in the provided list. (Modifies this object.)\n * @param {Array<string>} keys The desired keys.\n * @return {!goog.Uri.QueryData} a reference to this object.\n */\ngoog.Uri.QueryData.prototype.filterKeys = function(keys) {\n  'use strict';\n  this.ensureKeyMapInitialized_();\n  this.keyMap_.forEach(function(value, key) {\n    'use strict';\n    if (!goog.array.contains(keys, key)) {\n      this.remove(key);\n    }\n  }, this);\n  return this;\n};\n\n\n/**\n * Clone the query data instance.\n * @return {!goog.Uri.QueryData} New instance of the QueryData object.\n */\ngoog.Uri.QueryData.prototype.clone = function() {\n  'use strict';\n  var rv = new goog.Uri.QueryData();\n  rv.encodedQuery_ = this.encodedQuery_;\n  if (this.keyMap_) {\n    rv.keyMap_ = this.keyMap_.clone();\n    rv.count_ = this.count_;\n  }\n  return rv;\n};\n\n\n/**\n * Helper function to get the key name from a JavaScript object. Converts\n * the object to a string, and to lower case if necessary.\n * @private\n * @param {*} arg The object to get a key name from.\n * @return {string} valid key name which can be looked up in #keyMap_.\n */\ngoog.Uri.QueryData.prototype.getKeyName_ = function(arg) {\n  'use strict';\n  var keyName = String(arg);\n  if (this.ignoreCase_) {\n    keyName = keyName.toLowerCase();\n  }\n  return keyName;\n};\n\n\n/**\n * Ignore case in parameter names.\n * NOTE: If there are already key/value pairs in the QueryData, and\n * ignoreCase_ is set to false, the keys will all be lower-cased.\n * @param {boolean} ignoreCase whether this goog.Uri should ignore case.\n */\ngoog.Uri.QueryData.prototype.setIgnoreCase = function(ignoreCase) {\n  'use strict';\n  var resetKeys = ignoreCase && !this.ignoreCase_;\n  if (resetKeys) {\n    this.ensureKeyMapInitialized_();\n    this.invalidateCache_();\n    this.keyMap_.forEach(function(value, key) {\n      'use strict';\n      var lowerCase = key.toLowerCase();\n      if (key != lowerCase) {\n        this.remove(key);\n        this.setValues(lowerCase, value);\n      }\n    }, this);\n  }\n  this.ignoreCase_ = ignoreCase;\n};\n\n\n/**\n * Extends a query data object with another query data or map like object. This\n * operates 'in-place', it does not create a new QueryData object.\n *\n * @param {...(?goog.Uri.QueryData|?goog.structs.Map<?, ?>|?Object)} var_args\n *     The object from which key value pairs will be copied. Note: does not\n *     accept null.\n * @suppress {deprecated} Use deprecated goog.structs.forEach to allow different\n * types of parameters.\n */\ngoog.Uri.QueryData.prototype.extend = function(var_args) {\n  'use strict';\n  for (var i = 0; i < arguments.length; i++) {\n    var data = arguments[i];\n    goog.structs.forEach(data, function(value, key) {\n      'use strict';\n      this.add(key, value);\n    }, this);\n  }\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Codec functions of the v8 wire protocol. Eventually we'd want\n * to support pluggable wire-format to improve wire efficiency and to enable\n * binary encoding. Such support will require an interface class, which\n * will be added later.\n *\n */\n\n\ngoog.provide('goog.labs.net.webChannel.WireV8');\n\ngoog.require('goog.asserts');\ngoog.require('goog.json');\ngoog.require('goog.json.NativeJsonProcessor');\ngoog.require('goog.labs.net.webChannel.Wire');\ngoog.require('goog.structs');\ngoog.requireType('goog.string.Parser');\ngoog.requireType('goog.structs.Map');\n\n\n\n/**\n * The v8 codec class.\n *\n * @constructor\n * @struct\n */\ngoog.labs.net.webChannel.WireV8 = function() {\n  'use strict';\n  /**\n   * Parser for a response payload. The parser should return an array.\n   * @private {!goog.string.Parser}\n   */\n  this.parser_ = new goog.json.NativeJsonProcessor();\n};\n\n\ngoog.scope(function() {\n'use strict';\nvar WireV8 = goog.labs.net.webChannel.WireV8;\nvar Wire = goog.labs.net.webChannel.Wire;\n\n\n/**\n * Encodes a standalone message into the wire format.\n *\n * May throw exception if the message object contains any invalid elements.\n *\n * @param {!Object|!goog.structs.Map} message The message data.\n *     V8 only support JS objects (or Map).\n * @param {!Array<string>} buffer The text buffer to write the message to.\n * @param {string=} opt_prefix The prefix for each field of the object.\n */\nWireV8.prototype.encodeMessage = function(message, buffer, opt_prefix) {\n  'use strict';\n  var prefix = opt_prefix || '';\n  try {\n    goog.structs.forEach(message, function(value, key) {\n      'use strict';\n      var encodedValue = value;\n      if (goog.isObject(value)) {\n        encodedValue = goog.json.serialize(value);\n      }  // keep the fast-path for primitive types\n      buffer.push(prefix + key + '=' + encodeURIComponent(encodedValue));\n    });\n  } catch (ex) {\n    // We send a map here because lots of the retry logic relies on map IDs,\n    // so we have to send something (possibly redundant).\n    buffer.push(\n        prefix + 'type' +\n        '=' + encodeURIComponent('_badmap'));\n    throw ex;\n  }\n};\n\n\n/**\n * Encodes all the buffered messages of the forward channel.\n *\n * @param {!Array<Wire.QueuedMap>} messageQueue The message data.\n *     V8 only support JS objects.\n * @param {number} count The number of messages to be encoded.\n * @param {?function(!Object)} badMapHandler Callback for bad messages.\n * @return {string} the encoded messages\n */\nWireV8.prototype.encodeMessageQueue = function(\n    messageQueue, count, badMapHandler) {\n  'use strict';\n  var offset = -1;\n  while (true) {\n    var sb = ['count=' + count];\n    // To save a bit of bandwidth, specify the base mapId and the rest as\n    // offsets from it.\n    if (offset == -1) {\n      if (count > 0) {\n        offset = messageQueue[0].mapId;\n        sb.push('ofs=' + offset);\n      } else {\n        offset = 0;\n      }\n    } else {\n      sb.push('ofs=' + offset);\n    }\n    var done = true;\n    for (var i = 0; i < count; i++) {\n      var mapId = messageQueue[i].mapId;\n      var map = messageQueue[i].map;\n      mapId -= offset;\n      if (mapId < 0) {\n        // redo the encoding in case of retry/reordering, plus extra space\n        offset = Math.max(0, messageQueue[i].mapId - 100);\n        done = false;\n        continue;\n      }\n      try {\n        this.encodeMessage(map, sb, 'req' + mapId + '_');\n      } catch (ex) {\n        if (badMapHandler) {\n          badMapHandler(map);\n        }\n      }\n    }\n    if (done) {\n      return sb.join('&');\n    }\n  }\n};\n\n\n/**\n * Decodes a standalone message received from the wire. May throw exception\n * if text is ill-formatted.\n *\n * Must be valid JSON as it is insecure to use eval() to decode JS literals;\n * and eval() is disallowed in Chrome apps too.\n *\n * Invalid JS literals include null array elements, quotas etc.\n *\n * @param {string} messageText The string content as received from the wire.\n * @return {*} The decoded message object.\n */\nWireV8.prototype.decodeMessage = function(messageText) {\n  'use strict';\n  var response = this.parser_.parse(messageText);\n  goog.asserts.assert(Array.isArray(response));  // throw exception\n  return response;\n};\n});  // goog.scope\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Utilities for string manipulation.\n */\n\n\n/**\n * Namespace for string utilities\n */\ngoog.provide('goog.string');\ngoog.provide('goog.string.Unicode');\n\ngoog.require('goog.dom.safe');\ngoog.require('goog.html.uncheckedconversions');\ngoog.require('goog.string.Const');\ngoog.require('goog.string.internal');\n\n\n/**\n * @define {boolean} Enables HTML escaping of lowercase letter \"e\" which helps\n * with detection of double-escaping as this letter is frequently used.\n */\ngoog.string.DETECT_DOUBLE_ESCAPING =\n    goog.define('goog.string.DETECT_DOUBLE_ESCAPING', false);\n\n\n/**\n * @define {boolean} Whether to force non-dom html unescaping.\n */\ngoog.string.FORCE_NON_DOM_HTML_UNESCAPING =\n    goog.define('goog.string.FORCE_NON_DOM_HTML_UNESCAPING', false);\n\n\n/**\n * Common Unicode string characters.\n * @enum {string}\n */\ngoog.string.Unicode = {\n  NBSP: '\\xa0'\n};\n\n\n/**\n * Fast prefix-checker.\n * @param {string} str The string to check.\n * @param {string} prefix A string to look for at the start of `str`.\n * @return {boolean} True if `str` begins with `prefix`.\n */\ngoog.string.startsWith = goog.string.internal.startsWith;\n\n\n/**\n * Fast suffix-checker.\n * @param {string} str The string to check.\n * @param {string} suffix A string to look for at the end of `str`.\n * @return {boolean} True if `str` ends with `suffix`.\n */\ngoog.string.endsWith = goog.string.internal.endsWith;\n\n\n/**\n * Case-insensitive prefix-checker.\n * @param {string} str The string to check.\n * @param {string} prefix  A string to look for at the end of `str`.\n * @return {boolean} True if `str` begins with `prefix` (ignoring\n *     case).\n */\ngoog.string.caseInsensitiveStartsWith =\n    goog.string.internal.caseInsensitiveStartsWith;\n\n\n/**\n * Case-insensitive suffix-checker.\n * @param {string} str The string to check.\n * @param {string} suffix A string to look for at the end of `str`.\n * @return {boolean} True if `str` ends with `suffix` (ignoring\n *     case).\n */\ngoog.string.caseInsensitiveEndsWith =\n    goog.string.internal.caseInsensitiveEndsWith;\n\n\n/**\n * Case-insensitive equality checker.\n * @param {string} str1 First string to check.\n * @param {string} str2 Second string to check.\n * @return {boolean} True if `str1` and `str2` are the same string,\n *     ignoring case.\n */\ngoog.string.caseInsensitiveEquals = goog.string.internal.caseInsensitiveEquals;\n\n\n/**\n * Does simple python-style string substitution.\n * subs(\"foo%s hot%s\", \"bar\", \"dog\") becomes \"foobar hotdog\".\n * @param {string} str The string containing the pattern.\n * @param {...*} var_args The items to substitute into the pattern.\n * @return {string} A copy of `str` in which each occurrence of\n *     {@code %s} has been replaced an argument from `var_args`.\n */\ngoog.string.subs = function(str, var_args) {\n  'use strict';\n  var splitParts = str.split('%s');\n  var returnString = '';\n\n  var subsArguments = Array.prototype.slice.call(arguments, 1);\n  while (subsArguments.length &&\n         // Replace up to the last split part. We are inserting in the\n         // positions between split parts.\n         splitParts.length > 1) {\n    returnString += splitParts.shift() + subsArguments.shift();\n  }\n\n  return returnString + splitParts.join('%s');  // Join unused '%s'\n};\n\n\n/**\n * Converts multiple whitespace chars (spaces, non-breaking-spaces, new lines\n * and tabs) to a single space, and strips leading and trailing whitespace.\n * @param {string} str Input string.\n * @return {string} A copy of `str` with collapsed whitespace.\n */\ngoog.string.collapseWhitespace = function(str) {\n  'use strict';\n  // Since IE doesn't include non-breaking-space (0xa0) in their \\s character\n  // class (as required by section 7.2 of the ECMAScript spec), we explicitly\n  // include it in the regexp to enforce consistent cross-browser behavior.\n  return str.replace(/[\\s\\xa0]+/g, ' ').replace(/^\\s+|\\s+$/g, '');\n};\n\n\n/**\n * Checks if a string is empty or contains only whitespaces.\n * @param {string} str The string to check.\n * @return {boolean} Whether `str` is empty or whitespace only.\n */\ngoog.string.isEmptyOrWhitespace = goog.string.internal.isEmptyOrWhitespace;\n\n\n/**\n * Checks if a string is empty.\n * @param {string} str The string to check.\n * @return {boolean} Whether `str` is empty.\n */\ngoog.string.isEmptyString = function(str) {\n  'use strict';\n  return str.length == 0;\n};\n\n\n/**\n * Checks if a string is empty or contains only whitespaces.\n *\n * @param {string} str The string to check.\n * @return {boolean} Whether `str` is empty or whitespace only.\n * @deprecated Use goog.string.isEmptyOrWhitespace instead.\n */\ngoog.string.isEmpty = goog.string.isEmptyOrWhitespace;\n\n\n/**\n * Checks if a string is null, undefined, empty or contains only whitespaces.\n * @param {*} str The string to check.\n * @return {boolean} Whether `str` is null, undefined, empty, or\n *     whitespace only.\n * @deprecated Use goog.string.isEmptyOrWhitespace(goog.string.makeSafe(str))\n *     instead.\n */\ngoog.string.isEmptyOrWhitespaceSafe = function(str) {\n  'use strict';\n  return goog.string.isEmptyOrWhitespace(goog.string.makeSafe(str));\n};\n\n\n/**\n * Checks if a string is null, undefined, empty or contains only whitespaces.\n *\n * @param {*} str The string to check.\n * @return {boolean} Whether `str` is null, undefined, empty, or\n *     whitespace only.\n * @deprecated Use goog.string.isEmptyOrWhitespace instead.\n */\ngoog.string.isEmptySafe = goog.string.isEmptyOrWhitespaceSafe;\n\n\n/**\n * Checks if a string is all breaking whitespace.\n * @param {string} str The string to check.\n * @return {boolean} Whether the string is all breaking whitespace.\n */\ngoog.string.isBreakingWhitespace = function(str) {\n  'use strict';\n  return !/[^\\t\\n\\r ]/.test(str);\n};\n\n\n/**\n * Checks if a string contains all letters.\n * @param {string} str string to check.\n * @return {boolean} True if `str` consists entirely of letters.\n */\ngoog.string.isAlpha = function(str) {\n  'use strict';\n  return !/[^a-zA-Z]/.test(str);\n};\n\n\n/**\n * Checks if a string contains only numbers.\n * @param {*} str string to check. If not a string, it will be\n *     casted to one.\n * @return {boolean} True if `str` is numeric.\n */\ngoog.string.isNumeric = function(str) {\n  'use strict';\n  return !/[^0-9]/.test(str);\n};\n\n\n/**\n * Checks if a string contains only numbers or letters.\n * @param {string} str string to check.\n * @return {boolean} True if `str` is alphanumeric.\n */\ngoog.string.isAlphaNumeric = function(str) {\n  'use strict';\n  return !/[^a-zA-Z0-9]/.test(str);\n};\n\n\n/**\n * Checks if a character is a space character.\n * @param {string} ch Character to check.\n * @return {boolean} True if `ch` is a space.\n */\ngoog.string.isSpace = function(ch) {\n  'use strict';\n  return ch == ' ';\n};\n\n\n/**\n * Checks if a character is a valid unicode character.\n * @param {string} ch Character to check.\n * @return {boolean} True if `ch` is a valid unicode character.\n */\ngoog.string.isUnicodeChar = function(ch) {\n  'use strict';\n  return ch.length == 1 && ch >= ' ' && ch <= '~' ||\n      ch >= '\\u0080' && ch <= '\\uFFFD';\n};\n\n\n/**\n * Takes a string and replaces newlines with a space. Multiple lines are\n * replaced with a single space.\n * @param {string} str The string from which to strip newlines.\n * @return {string} A copy of `str` stripped of newlines.\n */\ngoog.string.stripNewlines = function(str) {\n  'use strict';\n  return str.replace(/(\\r\\n|\\r|\\n)+/g, ' ');\n};\n\n\n/**\n * Replaces Windows and Mac new lines with unix style: \\r or \\r\\n with \\n.\n * @param {string} str The string to in which to canonicalize newlines.\n * @return {string} `str` A copy of {@code} with canonicalized newlines.\n */\ngoog.string.canonicalizeNewlines = function(str) {\n  'use strict';\n  return str.replace(/(\\r\\n|\\r|\\n)/g, '\\n');\n};\n\n\n/**\n * Normalizes whitespace in a string, replacing all whitespace chars with\n * a space.\n * @param {string} str The string in which to normalize whitespace.\n * @return {string} A copy of `str` with all whitespace normalized.\n */\ngoog.string.normalizeWhitespace = function(str) {\n  'use strict';\n  return str.replace(/\\xa0|\\s/g, ' ');\n};\n\n\n/**\n * Normalizes spaces in a string, replacing all consecutive spaces and tabs\n * with a single space. Replaces non-breaking space with a space.\n * @param {string} str The string in which to normalize spaces.\n * @return {string} A copy of `str` with all consecutive spaces and tabs\n *    replaced with a single space.\n */\ngoog.string.normalizeSpaces = function(str) {\n  'use strict';\n  return str.replace(/\\xa0|[ \\t]+/g, ' ');\n};\n\n\n/**\n * Removes the breaking spaces from the left and right of the string and\n * collapses the sequences of breaking spaces in the middle into single spaces.\n * The original and the result strings render the same way in HTML.\n * @param {string} str A string in which to collapse spaces.\n * @return {string} Copy of the string with normalized breaking spaces.\n */\ngoog.string.collapseBreakingSpaces = function(str) {\n  'use strict';\n  return str.replace(/[\\t\\r\\n ]+/g, ' ')\n      .replace(/^[\\t\\r\\n ]+|[\\t\\r\\n ]+$/g, '');\n};\n\n\n/**\n * Trims white spaces to the left and right of a string.\n * @param {string} str The string to trim.\n * @return {string} A trimmed copy of `str`.\n */\ngoog.string.trim = goog.string.internal.trim;\n\n\n/**\n * Trims whitespaces at the left end of a string.\n * @param {string} str The string to left trim.\n * @return {string} A trimmed copy of `str`.\n */\ngoog.string.trimLeft = function(str) {\n  'use strict';\n  // Since IE doesn't include non-breaking-space (0xa0) in their \\s character\n  // class (as required by section 7.2 of the ECMAScript spec), we explicitly\n  // include it in the regexp to enforce consistent cross-browser behavior.\n  return str.replace(/^[\\s\\xa0]+/, '');\n};\n\n\n/**\n * Trims whitespaces at the right end of a string.\n * @param {string} str The string to right trim.\n * @return {string} A trimmed copy of `str`.\n */\ngoog.string.trimRight = function(str) {\n  'use strict';\n  // Since IE doesn't include non-breaking-space (0xa0) in their \\s character\n  // class (as required by section 7.2 of the ECMAScript spec), we explicitly\n  // include it in the regexp to enforce consistent cross-browser behavior.\n  return str.replace(/[\\s\\xa0]+$/, '');\n};\n\n\n/**\n * A string comparator that ignores case.\n * -1 = str1 less than str2\n *  0 = str1 equals str2\n *  1 = str1 greater than str2\n *\n * @param {string} str1 The string to compare.\n * @param {string} str2 The string to compare `str1` to.\n * @return {number} The comparator result, as described above.\n */\ngoog.string.caseInsensitiveCompare =\n    goog.string.internal.caseInsensitiveCompare;\n\n\n/**\n * Compares two strings interpreting their numeric substrings as numbers.\n *\n * @param {string} str1 First string.\n * @param {string} str2 Second string.\n * @param {!RegExp} tokenizerRegExp Splits a string into substrings of\n *     non-negative integers, non-numeric characters and optionally fractional\n *     numbers starting with a decimal point.\n * @return {number} Negative if str1 < str2, 0 is str1 == str2, positive if\n *     str1 > str2.\n * @private\n */\ngoog.string.numberAwareCompare_ = function(str1, str2, tokenizerRegExp) {\n  'use strict';\n  if (str1 == str2) {\n    return 0;\n  }\n  if (!str1) {\n    return -1;\n  }\n  if (!str2) {\n    return 1;\n  }\n\n  // Using match to split the entire string ahead of time turns out to be faster\n  // for most inputs than using RegExp.exec or iterating over each character.\n  var tokens1 = str1.toLowerCase().match(tokenizerRegExp);\n  var tokens2 = str2.toLowerCase().match(tokenizerRegExp);\n\n  var count = Math.min(tokens1.length, tokens2.length);\n\n  for (var i = 0; i < count; i++) {\n    var a = tokens1[i];\n    var b = tokens2[i];\n\n    // Compare pairs of tokens, returning if one token sorts before the other.\n    if (a != b) {\n      // Only if both tokens are integers is a special comparison required.\n      // Decimal numbers are sorted as strings (e.g., '.09' < '.1').\n      var num1 = parseInt(a, 10);\n      if (!isNaN(num1)) {\n        var num2 = parseInt(b, 10);\n        if (!isNaN(num2) && num1 - num2) {\n          return num1 - num2;\n        }\n      }\n      return a < b ? -1 : 1;\n    }\n  }\n\n  // If one string is a substring of the other, the shorter string sorts first.\n  if (tokens1.length != tokens2.length) {\n    return tokens1.length - tokens2.length;\n  }\n\n  // The two strings must be equivalent except for case (perfect equality is\n  // tested at the head of the function.) Revert to default ASCII string\n  // comparison to stabilize the sort.\n  return str1 < str2 ? -1 : 1;\n};\n\n\n/**\n * String comparison function that handles non-negative integer numbers in a\n * way humans might expect. Using this function, the string 'File 2.jpg' sorts\n * before 'File 10.jpg', and 'Version 1.9' before 'Version 1.10'. The comparison\n * is mostly case-insensitive, though strings that are identical except for case\n * are sorted with the upper-case strings before lower-case.\n *\n * This comparison function is up to 50x slower than either the default or the\n * case-insensitive compare. It should not be used in time-critical code, but\n * should be fast enough to sort several hundred short strings (like filenames)\n * with a reasonable delay.\n *\n * @param {string} str1 The string to compare in a numerically sensitive way.\n * @param {string} str2 The string to compare `str1` to.\n * @return {number} less than 0 if str1 < str2, 0 if str1 == str2, greater than\n *     0 if str1 > str2.\n */\ngoog.string.intAwareCompare = function(str1, str2) {\n  'use strict';\n  return goog.string.numberAwareCompare_(str1, str2, /\\d+|\\D+/g);\n};\n\n\n/**\n * String comparison function that handles non-negative integer and fractional\n * numbers in a way humans might expect. Using this function, the string\n * 'File 2.jpg' sorts before 'File 10.jpg', and '3.14' before '3.2'. Equivalent\n * to {@link goog.string.intAwareCompare} apart from the way how it interprets\n * dots.\n *\n * @param {string} str1 The string to compare in a numerically sensitive way.\n * @param {string} str2 The string to compare `str1` to.\n * @return {number} less than 0 if str1 < str2, 0 if str1 == str2, greater than\n *     0 if str1 > str2.\n */\ngoog.string.floatAwareCompare = function(str1, str2) {\n  'use strict';\n  return goog.string.numberAwareCompare_(str1, str2, /\\d+|\\.\\d+|\\D+/g);\n};\n\n\n/**\n * Alias for {@link goog.string.floatAwareCompare}.\n *\n * @param {string} str1\n * @param {string} str2\n * @return {number}\n */\ngoog.string.numerateCompare = goog.string.floatAwareCompare;\n\n\n/**\n * URL-encodes a string\n * @param {*} str The string to url-encode.\n * @return {string} An encoded copy of `str` that is safe for urls.\n *     Note that '#', ':', and other characters used to delimit portions\n *     of URLs *will* be encoded.\n */\ngoog.string.urlEncode = function(str) {\n  'use strict';\n  return encodeURIComponent(String(str));\n};\n\n\n/**\n * URL-decodes the string. We need to specially handle '+'s because\n * the javascript library doesn't convert them to spaces.\n * @param {string} str The string to url decode.\n * @return {string} The decoded `str`.\n */\ngoog.string.urlDecode = function(str) {\n  'use strict';\n  return decodeURIComponent(str.replace(/\\+/g, ' '));\n};\n\n\n/**\n * Converts \\n to <br>s or <br />s.\n * @param {string} str The string in which to convert newlines.\n * @param {boolean=} opt_xml Whether to use XML compatible tags.\n * @return {string} A copy of `str` with converted newlines.\n */\ngoog.string.newLineToBr = goog.string.internal.newLineToBr;\n\n\n/**\n * Escapes double quote '\"' and single quote '\\'' characters in addition to\n * '&', '<', and '>' so that a string can be included in an HTML tag attribute\n * value within double or single quotes.\n *\n * It should be noted that > doesn't need to be escaped for the HTML or XML to\n * be valid, but it has been decided to escape it for consistency with other\n * implementations.\n *\n * With goog.string.DETECT_DOUBLE_ESCAPING, this function escapes also the\n * lowercase letter \"e\".\n *\n * NOTE(user):\n * HtmlEscape is often called during the generation of large blocks of HTML.\n * Using statics for the regular expressions and strings is an optimization\n * that can more than half the amount of time IE spends in this function for\n * large apps, since strings and regexes both contribute to GC allocations.\n *\n * Testing for the presence of a character before escaping increases the number\n * of function calls, but actually provides a speed increase for the average\n * case -- since the average case often doesn't require the escaping of all 4\n * characters and indexOf() is much cheaper than replace().\n * The worst case does suffer slightly from the additional calls, therefore the\n * opt_isLikelyToContainHtmlChars option has been included for situations\n * where all 4 HTML entities are very likely to be present and need escaping.\n *\n * Some benchmarks (times tended to fluctuate +-0.05ms):\n *                                     FireFox                     IE6\n * (no chars / average (mix of cases) / all 4 chars)\n * no checks                     0.13 / 0.22 / 0.22         0.23 / 0.53 / 0.80\n * indexOf                       0.08 / 0.17 / 0.26         0.22 / 0.54 / 0.84\n * indexOf + re test             0.07 / 0.17 / 0.28         0.19 / 0.50 / 0.85\n *\n * An additional advantage of checking if replace actually needs to be called\n * is a reduction in the number of object allocations, so as the size of the\n * application grows the difference between the various methods would increase.\n *\n * @param {string} str string to be escaped.\n * @param {boolean=} opt_isLikelyToContainHtmlChars Don't perform a check to see\n *     if the character needs replacing - use this option if you expect each of\n *     the characters to appear often. Leave false if you expect few html\n *     characters to occur in your strings, such as if you are escaping HTML.\n * @return {string} An escaped copy of `str`.\n */\ngoog.string.htmlEscape = function(str, opt_isLikelyToContainHtmlChars) {\n  'use strict';\n  str = goog.string.internal.htmlEscape(str, opt_isLikelyToContainHtmlChars);\n  if (goog.string.DETECT_DOUBLE_ESCAPING) {\n    str = str.replace(goog.string.E_RE_, '&#101;');\n  }\n  return str;\n};\n\n\n/**\n * Regular expression that matches a lowercase letter \"e\", for use in escaping.\n * @const {!RegExp}\n * @private\n */\ngoog.string.E_RE_ = /e/g;\n\n\n/**\n * Unescapes an HTML string.\n *\n * @param {string} str The string to unescape.\n * @return {string} An unescaped copy of `str`.\n */\ngoog.string.unescapeEntities = function(str) {\n  'use strict';\n  if (goog.string.contains(str, '&')) {\n    // We are careful not to use a DOM if we do not have one or we explicitly\n    // requested non-DOM html unescaping.\n    if (!goog.string.FORCE_NON_DOM_HTML_UNESCAPING &&\n        'document' in goog.global) {\n      return goog.string.unescapeEntitiesUsingDom_(str);\n    } else {\n      // Fall back on pure XML entities\n      return goog.string.unescapePureXmlEntities_(str);\n    }\n  }\n  return str;\n};\n\n\n/**\n * Unescapes a HTML string using the provided document.\n *\n * @param {string} str The string to unescape.\n * @param {!Document} document A document to use in escaping the string.\n * @return {string} An unescaped copy of `str`.\n */\ngoog.string.unescapeEntitiesWithDocument = function(str, document) {\n  'use strict';\n  if (goog.string.contains(str, '&')) {\n    return goog.string.unescapeEntitiesUsingDom_(str, document);\n  }\n  return str;\n};\n\n\n/**\n * Unescapes an HTML string using a DOM to resolve non-XML, non-numeric\n * entities. This function is XSS-safe and whitespace-preserving.\n * @private\n * @param {string} str The string to unescape.\n * @param {Document=} opt_document An optional document to use for creating\n *     elements. If this is not specified then the default window.document\n *     will be used.\n * @return {string} The unescaped `str` string.\n */\ngoog.string.unescapeEntitiesUsingDom_ = function(str, opt_document) {\n  'use strict';\n  /** @type {!Object<string, string>} */\n  var seen = {'&amp;': '&', '&lt;': '<', '&gt;': '>', '&quot;': '\"'};\n  /** @type {!Element} */\n  var div;\n  if (opt_document) {\n    div = opt_document.createElement('div');\n  } else {\n    div = goog.global.document.createElement('div');\n  }\n  // Match as many valid entity characters as possible. If the actual entity\n  // happens to be shorter, it will still work as innerHTML will return the\n  // trailing characters unchanged. Since the entity characters do not include\n  // open angle bracket, there is no chance of XSS from the innerHTML use.\n  // Since no whitespace is passed to innerHTML, whitespace is preserved.\n  return str.replace(goog.string.HTML_ENTITY_PATTERN_, function(s, entity) {\n    'use strict';\n    // Check for cached entity.\n    var value = seen[s];\n    if (value) {\n      return value;\n    }\n    // Check for numeric entity.\n    if (entity.charAt(0) == '#') {\n      // Prefix with 0 so that hex entities (e.g. &#x10) parse as hex numbers.\n      var n = Number('0' + entity.substr(1));\n      if (!isNaN(n)) {\n        value = String.fromCharCode(n);\n      }\n    }\n    // Fall back to innerHTML otherwise.\n    if (!value) {\n      // Append a non-entity character to avoid a bug in Webkit that parses\n      // an invalid entity at the end of innerHTML text as the empty string.\n      goog.dom.safe.setInnerHtml(\n          div,\n          goog.html.uncheckedconversions\n              .safeHtmlFromStringKnownToSatisfyTypeContract(\n                  goog.string.Const.from('Single HTML entity.'), s + ' '));\n      // Then remove the trailing character from the result.\n      value = div.firstChild.nodeValue.slice(0, -1);\n    }\n    // Cache and return.\n    return seen[s] = value;\n  });\n};\n\n\n/**\n * Unescapes XML entities.\n * @private\n * @param {string} str The string to unescape.\n * @return {string} An unescaped copy of `str`.\n */\ngoog.string.unescapePureXmlEntities_ = function(str) {\n  'use strict';\n  return str.replace(/&([^;]+);/g, function(s, entity) {\n    'use strict';\n    switch (entity) {\n      case 'amp':\n        return '&';\n      case 'lt':\n        return '<';\n      case 'gt':\n        return '>';\n      case 'quot':\n        return '\"';\n      default:\n        if (entity.charAt(0) == '#') {\n          // Prefix with 0 so that hex entities (e.g. &#x10) parse as hex.\n          var n = Number('0' + entity.substr(1));\n          if (!isNaN(n)) {\n            return String.fromCharCode(n);\n          }\n        }\n        // For invalid entities we just return the entity\n        return s;\n    }\n  });\n};\n\n\n/**\n * Regular expression that matches an HTML entity.\n * See also HTML5: Tokenization / Tokenizing character references.\n * @private\n * @type {!RegExp}\n */\ngoog.string.HTML_ENTITY_PATTERN_ = /&([^;\\s<&]+);?/g;\n\n\n/**\n * Do escaping of whitespace to preserve spatial formatting. We use character\n * entity #160 to make it safer for xml.\n * @param {string} str The string in which to escape whitespace.\n * @param {boolean=} opt_xml Whether to use XML compatible tags.\n * @return {string} An escaped copy of `str`.\n */\ngoog.string.whitespaceEscape = function(str, opt_xml) {\n  'use strict';\n  // This doesn't use goog.string.preserveSpaces for backwards compatibility.\n  return goog.string.newLineToBr(str.replace(/  /g, ' &#160;'), opt_xml);\n};\n\n\n/**\n * Preserve spaces that would be otherwise collapsed in HTML by replacing them\n * with non-breaking space Unicode characters.\n * @param {string} str The string in which to preserve whitespace.\n * @return {string} A copy of `str` with preserved whitespace.\n */\ngoog.string.preserveSpaces = function(str) {\n  'use strict';\n  return str.replace(/(^|[\\n ]) /g, '$1' + goog.string.Unicode.NBSP);\n};\n\n\n/**\n * Strip quote characters around a string.  The second argument is a string of\n * characters to treat as quotes.  This can be a single character or a string of\n * multiple character and in that case each of those are treated as possible\n * quote characters. For example:\n *\n * <pre>\n * goog.string.stripQuotes('\"abc\"', '\"`') --> 'abc'\n * goog.string.stripQuotes('`abc`', '\"`') --> 'abc'\n * </pre>\n *\n * @param {string} str The string to strip.\n * @param {string} quoteChars The quote characters to strip.\n * @return {string} A copy of `str` without the quotes.\n */\ngoog.string.stripQuotes = function(str, quoteChars) {\n  'use strict';\n  var length = quoteChars.length;\n  for (var i = 0; i < length; i++) {\n    var quoteChar = length == 1 ? quoteChars : quoteChars.charAt(i);\n    if (str.charAt(0) == quoteChar && str.charAt(str.length - 1) == quoteChar) {\n      return str.substring(1, str.length - 1);\n    }\n  }\n  return str;\n};\n\n\n/**\n * Truncates a string to a certain length and adds '...' if necessary.  The\n * length also accounts for the ellipsis, so a maximum length of 10 and a string\n * 'Hello World!' produces 'Hello W...'.\n * @param {string} str The string to truncate.\n * @param {number} chars Max number of characters.\n * @param {boolean=} opt_protectEscapedCharacters Whether to protect escaped\n *     characters from being cut off in the middle.\n * @return {string} The truncated `str` string.\n */\ngoog.string.truncate = function(str, chars, opt_protectEscapedCharacters) {\n  'use strict';\n  if (opt_protectEscapedCharacters) {\n    str = goog.string.unescapeEntities(str);\n  }\n\n  if (str.length > chars) {\n    str = str.substring(0, chars - 3) + '...';\n  }\n\n  if (opt_protectEscapedCharacters) {\n    str = goog.string.htmlEscape(str);\n  }\n\n  return str;\n};\n\n\n/**\n * Truncate a string in the middle, adding \"...\" if necessary,\n * and favoring the beginning of the string.\n * @param {string} str The string to truncate the middle of.\n * @param {number} chars Max number of characters.\n * @param {boolean=} opt_protectEscapedCharacters Whether to protect escaped\n *     characters from being cutoff in the middle.\n * @param {number=} opt_trailingChars Optional number of trailing characters to\n *     leave at the end of the string, instead of truncating as close to the\n *     middle as possible.\n * @return {string} A truncated copy of `str`.\n */\ngoog.string.truncateMiddle = function(\n    str, chars, opt_protectEscapedCharacters, opt_trailingChars) {\n  'use strict';\n  if (opt_protectEscapedCharacters) {\n    str = goog.string.unescapeEntities(str);\n  }\n\n  if (opt_trailingChars && str.length > chars) {\n    if (opt_trailingChars > chars) {\n      opt_trailingChars = chars;\n    }\n    var endPoint = str.length - opt_trailingChars;\n    var startPoint = chars - opt_trailingChars;\n    str = str.substring(0, startPoint) + '...' + str.substring(endPoint);\n  } else if (str.length > chars) {\n    // Favor the beginning of the string:\n    var half = Math.floor(chars / 2);\n    var endPos = str.length - half;\n    half += chars % 2;\n    str = str.substring(0, half) + '...' + str.substring(endPos);\n  }\n\n  if (opt_protectEscapedCharacters) {\n    str = goog.string.htmlEscape(str);\n  }\n\n  return str;\n};\n\n\n/**\n * Special chars that need to be escaped for goog.string.quote.\n * @private {!Object<string, string>}\n */\ngoog.string.specialEscapeChars_ = {\n  '\\0': '\\\\0',\n  '\\b': '\\\\b',\n  '\\f': '\\\\f',\n  '\\n': '\\\\n',\n  '\\r': '\\\\r',\n  '\\t': '\\\\t',\n  '\\x0B': '\\\\x0B',  // '\\v' is not supported in JScript\n  '\"': '\\\\\"',\n  '\\\\': '\\\\\\\\',\n  // To support the use case of embedding quoted strings inside of script\n  // tags, we have to make sure HTML comments and opening/closing script tags do\n  // not appear in the resulting string. The specific strings that must be\n  // escaped are documented at:\n  // https://html.spec.whatwg.org/multipage/scripting.html#restrictions-for-contents-of-script-elements\n  '<': '\\\\u003C'  // NOTE: JSON.parse crashes on '\\\\x3c'.\n};\n\n\n/**\n * Character mappings used internally for goog.string.escapeChar.\n * @private {!Object<string, string>}\n */\ngoog.string.jsEscapeCache_ = {\n  '\\'': '\\\\\\''\n};\n\n\n/**\n * Encloses a string in double quotes and escapes characters so that the\n * string is a valid JS string. The resulting string is safe to embed in\n * `<script>` tags as \"<\" is escaped.\n * @param {string} s The string to quote.\n * @return {string} A copy of `s` surrounded by double quotes.\n */\ngoog.string.quote = function(s) {\n  'use strict';\n  s = String(s);\n  var sb = ['\"'];\n  for (var i = 0; i < s.length; i++) {\n    var ch = s.charAt(i);\n    var cc = ch.charCodeAt(0);\n    sb[i + 1] = goog.string.specialEscapeChars_[ch] ||\n        ((cc > 31 && cc < 127) ? ch : goog.string.escapeChar(ch));\n  }\n  sb.push('\"');\n  return sb.join('');\n};\n\n\n/**\n * Takes a string and returns the escaped string for that input string.\n * @param {string} str The string to escape.\n * @return {string} An escaped string representing `str`.\n */\ngoog.string.escapeString = function(str) {\n  'use strict';\n  var sb = [];\n  for (var i = 0; i < str.length; i++) {\n    sb[i] = goog.string.escapeChar(str.charAt(i));\n  }\n  return sb.join('');\n};\n\n\n/**\n * Takes a character and returns the escaped string for that character. For\n * example escapeChar(String.fromCharCode(15)) -> \"\\\\x0E\".\n * @param {string} c The character to escape.\n * @return {string} An escaped string representing `c`.\n */\ngoog.string.escapeChar = function(c) {\n  'use strict';\n  if (c in goog.string.jsEscapeCache_) {\n    return goog.string.jsEscapeCache_[c];\n  }\n\n  if (c in goog.string.specialEscapeChars_) {\n    return goog.string.jsEscapeCache_[c] = goog.string.specialEscapeChars_[c];\n  }\n\n  var rv = c;\n  var cc = c.charCodeAt(0);\n  if (cc > 31 && cc < 127) {\n    rv = c;\n  } else {\n    // tab is 9 but handled above\n    if (cc < 256) {\n      rv = '\\\\x';\n      if (cc < 16 || cc > 256) {\n        rv += '0';\n      }\n    } else {\n      rv = '\\\\u';\n      if (cc < 4096) {  // \\u1000\n        rv += '0';\n      }\n    }\n    rv += cc.toString(16).toUpperCase();\n  }\n\n  return goog.string.jsEscapeCache_[c] = rv;\n};\n\n\n/**\n * Determines whether a string contains a substring.\n * @param {string} str The string to search.\n * @param {string} subString The substring to search for.\n * @return {boolean} Whether `str` contains `subString`.\n */\ngoog.string.contains = goog.string.internal.contains;\n\n\n/**\n * Determines whether a string contains a substring, ignoring case.\n * @param {string} str The string to search.\n * @param {string} subString The substring to search for.\n * @return {boolean} Whether `str` contains `subString`.\n */\ngoog.string.caseInsensitiveContains =\n    goog.string.internal.caseInsensitiveContains;\n\n\n/**\n * Returns the non-overlapping occurrences of ss in s.\n * If either s or ss evalutes to false, then returns zero.\n * @param {string} s The string to look in.\n * @param {string} ss The string to look for.\n * @return {number} Number of occurrences of ss in s.\n */\ngoog.string.countOf = function(s, ss) {\n  'use strict';\n  return s && ss ? s.split(ss).length - 1 : 0;\n};\n\n\n/**\n * Removes a substring of a specified length at a specific\n * index in a string.\n * @param {string} s The base string from which to remove.\n * @param {number} index The index at which to remove the substring.\n * @param {number} stringLength The length of the substring to remove.\n * @return {string} A copy of `s` with the substring removed or the full\n *     string if nothing is removed or the input is invalid.\n */\ngoog.string.removeAt = function(s, index, stringLength) {\n  'use strict';\n  var resultStr = s;\n  // If the index is greater or equal to 0 then remove substring\n  if (index >= 0 && index < s.length && stringLength > 0) {\n    resultStr = s.substr(0, index) +\n        s.substr(index + stringLength, s.length - index - stringLength);\n  }\n  return resultStr;\n};\n\n\n/**\n * Removes the first occurrence of a substring from a string.\n * @param {string} str The base string from which to remove.\n * @param {string} substr The string to remove.\n * @return {string} A copy of `str` with `substr` removed or the\n *     full string if nothing is removed.\n */\ngoog.string.remove = function(str, substr) {\n  'use strict';\n  return str.replace(substr, '');\n};\n\n\n/**\n *  Removes all occurrences of a substring from a string.\n *  @param {string} s The base string from which to remove.\n *  @param {string} ss The string to remove.\n *  @return {string} A copy of `s` with `ss` removed or the full\n *      string if nothing is removed.\n */\ngoog.string.removeAll = function(s, ss) {\n  'use strict';\n  var re = new RegExp(goog.string.regExpEscape(ss), 'g');\n  return s.replace(re, '');\n};\n\n\n/**\n *  Replaces all occurrences of a substring of a string with a new substring.\n *  @param {string} s The base string from which to remove.\n *  @param {string} ss The string to replace.\n *  @param {string} replacement The replacement string.\n *  @return {string} A copy of `s` with `ss` replaced by\n *      `replacement` or the original string if nothing is replaced.\n */\ngoog.string.replaceAll = function(s, ss, replacement) {\n  'use strict';\n  var re = new RegExp(goog.string.regExpEscape(ss), 'g');\n  return s.replace(re, replacement.replace(/\\$/g, '$$$$'));\n};\n\n\n/**\n * Escapes characters in the string that are not safe to use in a RegExp.\n * @param {*} s The string to escape. If not a string, it will be casted\n *     to one.\n * @return {string} A RegExp safe, escaped copy of `s`.\n */\ngoog.string.regExpEscape = function(s) {\n  'use strict';\n  return String(s)\n      .replace(/([-()\\[\\]{}+?*.$\\^|,:#<!\\\\])/g, '\\\\$1')\n      .replace(/\\x08/g, '\\\\x08');\n};\n\n\n/**\n * Repeats a string n times.\n * @param {string} string The string to repeat.\n * @param {number} length The number of times to repeat.\n * @return {string} A string containing `length` repetitions of\n *     `string`.\n */\ngoog.string.repeat = (String.prototype.repeat) ? function(string, length) {\n  'use strict';\n  // The native method is over 100 times faster than the alternative.\n  return string.repeat(length);\n} : function(string, length) {\n  'use strict';\n  return new Array(length + 1).join(string);\n};\n\n\n/**\n * Pads number to given length and optionally rounds it to a given precision.\n * For example:\n * <pre>padNumber(1.25, 2, 3) -> '01.250'\n * padNumber(1.25, 2) -> '01.25'\n * padNumber(1.25, 2, 1) -> '01.3'\n * padNumber(1.25, 0) -> '1.25'</pre>\n *\n * @param {number} num The number to pad.\n * @param {number} length The desired length.\n * @param {number=} opt_precision The desired precision.\n * @return {string} `num` as a string with the given options.\n */\ngoog.string.padNumber = function(num, length, opt_precision) {\n  'use strict';\n  var s =\n      (opt_precision !== undefined) ? num.toFixed(opt_precision) : String(num);\n  var index = s.indexOf('.');\n  if (index == -1) {\n    index = s.length;\n  }\n  return goog.string.repeat('0', Math.max(0, length - index)) + s;\n};\n\n\n/**\n * Returns a string representation of the given object, with\n * null and undefined being returned as the empty string.\n *\n * @param {*} obj The object to convert.\n * @return {string} A string representation of the `obj`.\n */\ngoog.string.makeSafe = function(obj) {\n  'use strict';\n  return obj == null ? '' : String(obj);\n};\n\n\n/**\n * Concatenates string expressions. This is useful\n * since some browsers are very inefficient when it comes to using plus to\n * concat strings. Be careful when using null and undefined here since\n * these will not be included in the result. If you need to represent these\n * be sure to cast the argument to a String first.\n * For example:\n * <pre>buildString('a', 'b', 'c', 'd') -> 'abcd'\n * buildString(null, undefined) -> ''\n * </pre>\n * @param {...*} var_args A list of strings to concatenate. If not a string,\n *     it will be casted to one.\n * @return {string} The concatenation of `var_args`.\n */\ngoog.string.buildString = function(var_args) {\n  'use strict';\n  return Array.prototype.join.call(arguments, '');\n};\n\n\n/**\n * Returns a string with at least 64-bits of randomness.\n *\n * Doesn't trust JavaScript's random function entirely. Uses a combination of\n * random and current timestamp, and then encodes the string in base-36 to\n * make it shorter.\n *\n * @return {string} A random string, e.g. sn1s7vb4gcic.\n */\ngoog.string.getRandomString = function() {\n  'use strict';\n  var x = 2147483648;\n  return Math.floor(Math.random() * x).toString(36) +\n      Math.abs(Math.floor(Math.random() * x) ^ goog.now()).toString(36);\n};\n\n\n/**\n * Compares two version numbers.\n *\n * @param {string|number} version1 Version of first item.\n * @param {string|number} version2 Version of second item.\n *\n * @return {number}  1 if `version1` is higher.\n *                   0 if arguments are equal.\n *                  -1 if `version2` is higher.\n */\ngoog.string.compareVersions = goog.string.internal.compareVersions;\n\n\n/**\n * String hash function similar to java.lang.String.hashCode().\n * The hash code for a string is computed as\n * s[0] * 31 ^ (n - 1) + s[1] * 31 ^ (n - 2) + ... + s[n - 1],\n * where s[i] is the ith character of the string and n is the length of\n * the string. We mod the result to make it between 0 (inclusive) and 2^32\n * (exclusive).\n * @param {string} str A string.\n * @return {number} Hash value for `str`, between 0 (inclusive) and 2^32\n *  (exclusive). The empty string returns 0.\n */\ngoog.string.hashCode = function(str) {\n  'use strict';\n  var result = 0;\n  for (var i = 0; i < str.length; ++i) {\n    // Normalize to 4 byte range, 0 ... 2^32.\n    result = (31 * result + str.charCodeAt(i)) >>> 0;\n  }\n  return result;\n};\n\n\n/**\n * The most recent unique ID. |0 is equivalent to Math.floor in this case.\n * @type {number}\n * @private\n */\ngoog.string.uniqueStringCounter_ = Math.random() * 0x80000000 | 0;\n\n\n/**\n * Generates and returns a string which is unique in the current document.\n * This is useful, for example, to create unique IDs for DOM elements.\n * @return {string} A unique id.\n */\ngoog.string.createUniqueString = function() {\n  'use strict';\n  return 'goog_' + goog.string.uniqueStringCounter_++;\n};\n\n\n/**\n * Converts the supplied string to a number, which may be Infinity or NaN.\n * This function strips whitespace: (toNumber(' 123') === 123)\n * This function accepts scientific notation: (toNumber('1e1') === 10)\n *\n * This is better than JavaScript's built-in conversions because, sadly:\n *     (Number(' ') === 0) and (parseFloat('123a') === 123)\n *\n * @param {string} str The string to convert.\n * @return {number} The number the supplied string represents, or NaN.\n */\ngoog.string.toNumber = function(str) {\n  'use strict';\n  var num = Number(str);\n  if (num == 0 && goog.string.isEmptyOrWhitespace(str)) {\n    return NaN;\n  }\n  return num;\n};\n\n\n/**\n * Returns whether the given string is lower camel case (e.g. \"isFooBar\").\n *\n * Note that this assumes the string is entirely letters.\n * @see http://en.wikipedia.org/wiki/CamelCase#Variations_and_synonyms\n *\n * @param {string} str String to test.\n * @return {boolean} Whether the string is lower camel case.\n */\ngoog.string.isLowerCamelCase = function(str) {\n  'use strict';\n  return /^[a-z]+([A-Z][a-z]*)*$/.test(str);\n};\n\n\n/**\n * Returns whether the given string is upper camel case (e.g. \"FooBarBaz\").\n *\n * Note that this assumes the string is entirely letters.\n * @see http://en.wikipedia.org/wiki/CamelCase#Variations_and_synonyms\n *\n * @param {string} str String to test.\n * @return {boolean} Whether the string is upper camel case.\n */\ngoog.string.isUpperCamelCase = function(str) {\n  'use strict';\n  return /^([A-Z][a-z]*)+$/.test(str);\n};\n\n\n/**\n * Converts a string from selector-case to camelCase (e.g. from\n * \"multi-part-string\" to \"multiPartString\"), useful for converting\n * CSS selectors and HTML dataset keys to their equivalent JS properties.\n * @param {string} str The string in selector-case form.\n * @return {string} The string in camelCase form.\n */\ngoog.string.toCamelCase = function(str) {\n  'use strict';\n  return String(str).replace(/\\-([a-z])/g, function(all, match) {\n    'use strict';\n    return match.toUpperCase();\n  });\n};\n\n\n/**\n * Converts a string from camelCase to selector-case (e.g. from\n * \"multiPartString\" to \"multi-part-string\"), useful for converting JS\n * style and dataset properties to equivalent CSS selectors and HTML keys.\n * @param {string} str The string in camelCase form.\n * @return {string} The string in selector-case form.\n */\ngoog.string.toSelectorCase = function(str) {\n  'use strict';\n  return String(str).replace(/([A-Z])/g, '-$1').toLowerCase();\n};\n\n\n/**\n * Converts a string into TitleCase. First character of the string is always\n * capitalized in addition to the first letter of every subsequent word.\n * Words are delimited by one or more whitespaces by default. Custom delimiters\n * can optionally be specified to replace the default, which doesn't preserve\n * whitespace delimiters and instead must be explicitly included if needed.\n *\n * Default delimiter => \" \":\n *    goog.string.toTitleCase('oneTwoThree')    => 'OneTwoThree'\n *    goog.string.toTitleCase('one two three')  => 'One Two Three'\n *    goog.string.toTitleCase('  one   two   ') => '  One   Two   '\n *    goog.string.toTitleCase('one_two_three')  => 'One_two_three'\n *    goog.string.toTitleCase('one-two-three')  => 'One-two-three'\n *\n * Custom delimiter => \"_-.\":\n *    goog.string.toTitleCase('oneTwoThree', '_-.')       => 'OneTwoThree'\n *    goog.string.toTitleCase('one two three', '_-.')     => 'One two three'\n *    goog.string.toTitleCase('  one   two   ', '_-.')    => '  one   two   '\n *    goog.string.toTitleCase('one_two_three', '_-.')     => 'One_Two_Three'\n *    goog.string.toTitleCase('one-two-three', '_-.')     => 'One-Two-Three'\n *    goog.string.toTitleCase('one...two...three', '_-.') => 'One...Two...Three'\n *    goog.string.toTitleCase('one. two. three', '_-.')   => 'One. two. three'\n *    goog.string.toTitleCase('one-two.three', '_-.')     => 'One-Two.Three'\n *\n * @param {string} str String value in camelCase form.\n * @param {string=} opt_delimiters Custom delimiter character set used to\n *      distinguish words in the string value. Each character represents a\n *      single delimiter. When provided, default whitespace delimiter is\n *      overridden and must be explicitly included if needed.\n * @return {string} String value in TitleCase form.\n */\ngoog.string.toTitleCase = function(str, opt_delimiters) {\n  'use strict';\n  var delimiters = (typeof opt_delimiters === 'string') ?\n      goog.string.regExpEscape(opt_delimiters) :\n      '\\\\s';\n\n  // For IE8, we need to prevent using an empty character set. Otherwise,\n  // incorrect matching will occur.\n  delimiters = delimiters ? '|[' + delimiters + ']+' : '';\n\n  var regexp = new RegExp('(^' + delimiters + ')([a-z])', 'g');\n  return str.replace(regexp, function(all, p1, p2) {\n    'use strict';\n    return p1 + p2.toUpperCase();\n  });\n};\n\n\n/**\n * Capitalizes a string, i.e. converts the first letter to uppercase\n * and all other letters to lowercase, e.g.:\n *\n * goog.string.capitalize('one')     => 'One'\n * goog.string.capitalize('ONE')     => 'One'\n * goog.string.capitalize('one two') => 'One two'\n *\n * Note that this function does not trim initial whitespace.\n *\n * @param {string} str String value to capitalize.\n * @return {string} String value with first letter in uppercase.\n */\ngoog.string.capitalize = function(str) {\n  'use strict';\n  return String(str.charAt(0)).toUpperCase() +\n      String(str.substr(1)).toLowerCase();\n};\n\n\n/**\n * Parse a string in decimal or hexidecimal ('0xFFFF') form.\n *\n * To parse a particular radix, please use parseInt(string, radix) directly. See\n * https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/parseInt\n *\n * This is a wrapper for the built-in parseInt function that will only parse\n * numbers as base 10 or base 16.  Some JS implementations assume strings\n * starting with \"0\" are intended to be octal. ES3 allowed but discouraged\n * this behavior. ES5 forbids it.  This function emulates the ES5 behavior.\n *\n * For more information, see Mozilla JS Reference: http://goo.gl/8RiFj\n *\n * @param {string|number|null|undefined} value The value to be parsed.\n * @return {number} The number, parsed. If the string failed to parse, this\n *     will be NaN.\n */\ngoog.string.parseInt = function(value) {\n  'use strict';\n  // Force finite numbers to strings.\n  if (isFinite(value)) {\n    value = String(value);\n  }\n\n  if (typeof value === 'string') {\n    // If the string starts with '0x' or '-0x', parse as hex.\n    return /^\\s*-?0x/i.test(value) ? parseInt(value, 16) : parseInt(value, 10);\n  }\n\n  return NaN;\n};\n\n\n/**\n * Splits a string on a separator a limited number of times.\n *\n * This implementation is more similar to Python or Java, where the limit\n * parameter specifies the maximum number of splits rather than truncating\n * the number of results.\n *\n * See http://docs.python.org/2/library/stdtypes.html#str.split\n * See JavaDoc: http://goo.gl/F2AsY\n * See Mozilla reference: http://goo.gl/dZdZs\n *\n * @param {string} str String to split.\n * @param {string} separator The separator.\n * @param {number} limit The limit to the number of splits. The resulting array\n *     will have a maximum length of limit+1.  Negative numbers are the same\n *     as zero.\n * @return {!Array<string>} The string, split.\n */\ngoog.string.splitLimit = function(str, separator, limit) {\n  'use strict';\n  var parts = str.split(separator);\n  var returnVal = [];\n\n  // Only continue doing this while we haven't hit the limit and we have\n  // parts left.\n  while (limit > 0 && parts.length) {\n    returnVal.push(parts.shift());\n    limit--;\n  }\n\n  // If there are remaining parts, append them to the end.\n  if (parts.length) {\n    returnVal.push(parts.join(separator));\n  }\n\n  return returnVal;\n};\n\n\n/**\n * Finds the characters to the right of the last instance of any separator\n *\n * This function is similar to goog.string.path.baseName, except it can take a\n * list of characters to split the string on. It will return the rightmost\n * grouping of characters to the right of any separator as a left-to-right\n * oriented string.\n *\n * @see goog.string.path.baseName\n * @param {string} str The string\n * @param {string|!Array<string>} separators A list of separator characters\n * @return {string} The last part of the string with respect to the separators\n */\ngoog.string.lastComponent = function(str, separators) {\n  'use strict';\n  if (!separators) {\n    return str;\n  } else if (typeof separators == 'string') {\n    separators = [separators];\n  }\n\n  var lastSeparatorIndex = -1;\n  for (var i = 0; i < separators.length; i++) {\n    if (separators[i] == '') {\n      continue;\n    }\n    var currentSeparatorIndex = str.lastIndexOf(separators[i]);\n    if (currentSeparatorIndex > lastSeparatorIndex) {\n      lastSeparatorIndex = currentSeparatorIndex;\n    }\n  }\n  if (lastSeparatorIndex == -1) {\n    return str;\n  }\n  return str.slice(lastSeparatorIndex + 1);\n};\n\n\n/**\n * Computes the Levenshtein edit distance between two strings.\n * @param {string} a\n * @param {string} b\n * @return {number} The edit distance between the two strings.\n */\ngoog.string.editDistance = function(a, b) {\n  'use strict';\n  var v0 = [];\n  var v1 = [];\n\n  if (a == b) {\n    return 0;\n  }\n\n  if (!a.length || !b.length) {\n    return Math.max(a.length, b.length);\n  }\n\n  for (var i = 0; i < b.length + 1; i++) {\n    v0[i] = i;\n  }\n\n  for (var i = 0; i < a.length; i++) {\n    v1[0] = i + 1;\n\n    for (var j = 0; j < b.length; j++) {\n      var cost = Number(a[i] != b[j]);\n      // Cost for the substring is the minimum of adding one character, removing\n      // one character, or a swap.\n      v1[j + 1] = Math.min(v1[j] + 1, v0[j + 1] + 1, v0[j] + cost);\n    }\n\n    for (var j = 0; j < v0.length; j++) {\n      v0[j] = v1[j];\n    }\n  }\n\n  return v1[b.length];\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Wrapper class for handling XmlHttpRequests.\n *\n * One off requests can be sent through goog.net.XhrIo.send() or an\n * instance can be created to send multiple requests.  Each request uses its\n * own XmlHttpRequest object and handles clearing of the event callback to\n * ensure no leaks.\n *\n * XhrIo is event based, it dispatches events on success, failure, finishing,\n * ready-state change, or progress (download and upload).\n *\n * The ready-state or timeout event fires first, followed by\n * a generic completed event. Then the abort, error, or success event\n * is fired as appropriate. Progress events are fired as they are\n * received. Lastly, the ready event will fire to indicate that the\n * object may be used to make another request.\n *\n * The error event may also be called before completed and\n * ready-state-change if the XmlHttpRequest.open() or .send() methods throw.\n *\n * This class does not support multiple requests, queuing, or prioritization.\n *\n * When progress events are supported by the browser, and progress is\n * enabled via .setProgressEventsEnabled(true), the\n * goog.net.EventType.PROGRESS event will be the re-dispatched browser\n * progress event. Additionally, a DOWNLOAD_PROGRESS or UPLOAD_PROGRESS event\n * will be fired for download and upload progress respectively.\n */\n\n\ngoog.provide('goog.net.XhrIo');\ngoog.provide('goog.net.XhrIo.ResponseType');\n\ngoog.require('goog.Timer');\ngoog.require('goog.array');\ngoog.require('goog.asserts');\ngoog.require('goog.debug.entryPointRegistry');\ngoog.require('goog.events.EventTarget');\ngoog.require('goog.json.hybrid');\ngoog.require('goog.log');\ngoog.require('goog.net.ErrorCode');\ngoog.require('goog.net.EventType');\ngoog.require('goog.net.HttpStatus');\ngoog.require('goog.net.XmlHttp');\ngoog.require('goog.object');\ngoog.require('goog.string');\ngoog.require('goog.structs');\ngoog.require('goog.structs.Map');\ngoog.require('goog.uri.utils');\ngoog.require('goog.userAgent');\ngoog.requireType('goog.Uri');\ngoog.requireType('goog.debug.ErrorHandler');\ngoog.requireType('goog.net.XhrLike');\ngoog.requireType('goog.net.XmlHttpFactory');\n\ngoog.scope(function() {\n\n'use strict';\n/**\n * Basic class for handling XMLHttpRequests.\n * @param {goog.net.XmlHttpFactory=} opt_xmlHttpFactory Factory to use when\n *     creating XMLHttpRequest objects.\n * @constructor\n * @extends {goog.events.EventTarget}\n */\ngoog.net.XhrIo = function(opt_xmlHttpFactory) {\n  'use strict';\n  XhrIo.base(this, 'constructor');\n\n  /**\n   * Map of default headers to add to every request, use:\n   * XhrIo.headers.set(name, value)\n   * @type {!goog.structs.Map}\n   */\n  this.headers = new goog.structs.Map();\n\n  /**\n   * Optional XmlHttpFactory\n   * @private {goog.net.XmlHttpFactory}\n   */\n  this.xmlHttpFactory_ = opt_xmlHttpFactory || null;\n\n  /**\n   * Whether XMLHttpRequest is active.  A request is active from the time send()\n   * is called until onReadyStateChange() is complete, or error() or abort()\n   * is called.\n   * @private {boolean}\n   */\n  this.active_ = false;\n\n  /**\n   * The XMLHttpRequest object that is being used for the transfer.\n   * @private {?goog.net.XhrLike.OrNative}\n   */\n  this.xhr_ = null;\n\n  /**\n   * The options to use with the current XMLHttpRequest object.\n   * @private {?Object}\n   */\n  this.xhrOptions_ = null;\n\n  /**\n   * Last URL that was requested.\n   * @private {string|goog.Uri}\n   */\n  this.lastUri_ = '';\n\n  /**\n   * Method for the last request.\n   * @private {string}\n   */\n  this.lastMethod_ = '';\n\n  /**\n   * Last error code.\n   * @private {!goog.net.ErrorCode}\n   */\n  this.lastErrorCode_ = goog.net.ErrorCode.NO_ERROR;\n\n  /**\n   * Last error message.\n   * @private {Error|string}\n   */\n  this.lastError_ = '';\n\n  /**\n   * Used to ensure that we don't dispatch an multiple ERROR events. This can\n   * happen in IE when it does a synchronous load and one error is handled in\n   * the ready state change and one is handled due to send() throwing an\n   * exception.\n   * @private {boolean}\n   */\n  this.errorDispatched_ = false;\n\n  /**\n   * Used to make sure we don't fire the complete event from inside a send call.\n   * @private {boolean}\n   */\n  this.inSend_ = false;\n\n  /**\n   * Used in determining if a call to {@link #onReadyStateChange_} is from\n   * within a call to this.xhr_.open.\n   * @private {boolean}\n   */\n  this.inOpen_ = false;\n\n  /**\n   * Used in determining if a call to {@link #onReadyStateChange_} is from\n   * within a call to this.xhr_.abort.\n   * @private {boolean}\n   */\n  this.inAbort_ = false;\n\n  /**\n   * Number of milliseconds after which an incomplete request will be aborted\n   * and a {@link goog.net.EventType.TIMEOUT} event raised; 0 means no timeout\n   * is set.\n   * @private {number}\n   */\n  this.timeoutInterval_ = 0;\n\n  /**\n   * Timer to track request timeout.\n   * @private {?number}\n   */\n  this.timeoutId_ = null;\n\n  /**\n   * The requested type for the response. The empty string means use the default\n   * XHR behavior.\n   * @private {goog.net.XhrIo.ResponseType}\n   */\n  this.responseType_ = ResponseType.DEFAULT;\n\n  /**\n   * Whether a \"credentialed\" request is to be sent (one that is aware of\n   * cookies and authentication). This is applicable only for cross-domain\n   * requests and more recent browsers that support this part of the HTTP Access\n   * Control standard.\n   *\n   * @see http://www.w3.org/TR/XMLHttpRequest/#the-withcredentials-attribute\n   *\n   * @private {boolean}\n   */\n  this.withCredentials_ = false;\n\n  /**\n   * Whether progress events are enabled for this request. This is\n   * disabled by default because setting a progress event handler\n   * causes pre-flight OPTIONS requests to be sent for CORS requests,\n   * even in cases where a pre-flight request would not otherwise be\n   * sent.\n   *\n   * @see http://xhr.spec.whatwg.org/#security-considerations\n   *\n   * Note that this can cause problems for Firefox 22 and below, as an\n   * older \"LSProgressEvent\" will be dispatched by the browser. That\n   * progress event is no longer supported, and can lead to failures,\n   * including throwing exceptions.\n   *\n   * @see http://bugzilla.mozilla.org/show_bug.cgi?id=845631\n   * @see b/23469793\n   *\n   * @private {boolean}\n   */\n  this.progressEventsEnabled_ = false;\n\n  /**\n   * True if we can use XMLHttpRequest's timeout directly.\n   * @private {boolean}\n   */\n  this.useXhr2Timeout_ = false;\n};\ngoog.inherits(goog.net.XhrIo, goog.events.EventTarget);\n\nconst XhrIo = goog.net.XhrIo;\n\n/**\n * Response types that may be requested for XMLHttpRequests.\n * @enum {string}\n * @see http://www.w3.org/TR/XMLHttpRequest/#the-responsetype-attribute\n */\ngoog.net.XhrIo.ResponseType = {\n  DEFAULT: '',\n  TEXT: 'text',\n  DOCUMENT: 'document',\n  // Not supported as of Chrome 10.0.612.1 dev\n  BLOB: 'blob',\n  ARRAY_BUFFER: 'arraybuffer',\n};\n\nconst ResponseType = goog.net.XhrIo.ResponseType;\n\n\n/**\n * A reference to the XhrIo logger\n * @private {?goog.log.Logger}\n * @const\n */\ngoog.net.XhrIo.prototype.logger_ = goog.log.getLogger('goog.net.XhrIo');\n\n\n/**\n * The Content-Type HTTP header name\n * @type {string}\n */\ngoog.net.XhrIo.CONTENT_TYPE_HEADER = 'Content-Type';\n\n\n/**\n * The Content-Transfer-Encoding HTTP header name\n * @type {string}\n */\ngoog.net.XhrIo.CONTENT_TRANSFER_ENCODING = 'Content-Transfer-Encoding';\n\n\n/**\n * The pattern matching the 'http' and 'https' URI schemes\n * @type {!RegExp}\n */\ngoog.net.XhrIo.HTTP_SCHEME_PATTERN = /^https?$/i;\n\n\n/**\n * The methods that typically come along with form data.  We set different\n * headers depending on whether the HTTP action is one of these.\n * @type {!Array<string>}\n */\ngoog.net.XhrIo.METHODS_WITH_FORM_DATA = ['POST', 'PUT'];\n\n\n/**\n * The Content-Type HTTP header value for a url-encoded form\n * @type {string}\n */\ngoog.net.XhrIo.FORM_CONTENT_TYPE =\n    'application/x-www-form-urlencoded;charset=utf-8';\n\n\n/**\n * The XMLHttpRequest Level two timeout delay ms property name.\n *\n * @see http://www.w3.org/TR/XMLHttpRequest/#the-timeout-attribute\n *\n * @private {string}\n * @const\n */\ngoog.net.XhrIo.XHR2_TIMEOUT_ = 'timeout';\n\n\n/**\n * The XMLHttpRequest Level two ontimeout handler property name.\n *\n * @see http://www.w3.org/TR/XMLHttpRequest/#the-timeout-attribute\n *\n * @private {string}\n * @const\n */\ngoog.net.XhrIo.XHR2_ON_TIMEOUT_ = 'ontimeout';\n\n\n/**\n * All non-disposed instances of goog.net.XhrIo created\n * by {@link goog.net.XhrIo.send} are in this Array.\n * @see goog.net.XhrIo.cleanup\n * @private {!Array<!goog.net.XhrIo>}\n */\ngoog.net.XhrIo.sendInstances_ = [];\n\n\n/**\n * Static send that creates a short lived instance of XhrIo to send the\n * request.\n * @see goog.net.XhrIo.cleanup\n * @param {string|goog.Uri} url Uri to make request to.\n * @param {?function(this:goog.net.XhrIo, ?)=} opt_callback Callback function\n *     for when request is complete.\n * @param {string=} opt_method Send method, default: GET.\n * @param {ArrayBuffer|ArrayBufferView|Blob|Document|FormData|string=}\n *     opt_content Body data.\n * @param {Object|goog.structs.Map=} opt_headers Map of headers to add to the\n *     request.\n * @param {number=} opt_timeoutInterval Number of milliseconds after which an\n *     incomplete request will be aborted; 0 means no timeout is set.\n * @param {boolean=} opt_withCredentials Whether to send credentials with the\n *     request. Default to false. See {@link goog.net.XhrIo#setWithCredentials}.\n * @return {!goog.net.XhrIo} The sent XhrIo.\n */\ngoog.net.XhrIo.send = function(\n    url, opt_callback, opt_method, opt_content, opt_headers,\n    opt_timeoutInterval, opt_withCredentials) {\n  'use strict';\n  const x = new goog.net.XhrIo();\n  goog.net.XhrIo.sendInstances_.push(x);\n  if (opt_callback) {\n    x.listen(goog.net.EventType.COMPLETE, opt_callback);\n  }\n  x.listenOnce(goog.net.EventType.READY, x.cleanupSend_);\n  if (opt_timeoutInterval) {\n    x.setTimeoutInterval(opt_timeoutInterval);\n  }\n  if (opt_withCredentials) {\n    x.setWithCredentials(opt_withCredentials);\n  }\n  x.send(url, opt_method, opt_content, opt_headers);\n  return x;\n};\n\n\n/**\n * Disposes all non-disposed instances of goog.net.XhrIo created by\n * {@link goog.net.XhrIo.send}.\n * {@link goog.net.XhrIo.send} cleans up the goog.net.XhrIo instance\n * it creates when the request completes or fails.  However, if\n * the request never completes, then the goog.net.XhrIo is not disposed.\n * This can occur if the window is unloaded before the request completes.\n * We could have {@link goog.net.XhrIo.send} return the goog.net.XhrIo\n * it creates and make the client of {@link goog.net.XhrIo.send} be\n * responsible for disposing it in this case.  However, this makes things\n * significantly more complicated for the client, and the whole point\n * of {@link goog.net.XhrIo.send} is that it's simple and easy to use.\n * Clients of {@link goog.net.XhrIo.send} should call\n * {@link goog.net.XhrIo.cleanup} when doing final\n * cleanup on window unload.\n */\ngoog.net.XhrIo.cleanup = function() {\n  'use strict';\n  const instances = goog.net.XhrIo.sendInstances_;\n  while (instances.length) {\n    instances.pop().dispose();\n  }\n};\n\n\n/**\n * Installs exception protection for all entry point introduced by\n * goog.net.XhrIo instances which are not protected by\n * {@link goog.debug.ErrorHandler#protectWindowSetTimeout},\n * {@link goog.debug.ErrorHandler#protectWindowSetInterval}, or\n * {@link goog.events.protectBrowserEventEntryPoint}.\n *\n * @param {goog.debug.ErrorHandler} errorHandler Error handler with which to\n *     protect the entry point(s).\n */\ngoog.net.XhrIo.protectEntryPoints = function(errorHandler) {\n  'use strict';\n  goog.net.XhrIo.prototype.onReadyStateChangeEntryPoint_ =\n      errorHandler.protectEntryPoint(\n          goog.net.XhrIo.prototype.onReadyStateChangeEntryPoint_);\n};\n\n\n/**\n * Disposes of the specified goog.net.XhrIo created by\n * {@link goog.net.XhrIo.send} and removes it from\n * {@link goog.net.XhrIo.pendingStaticSendInstances_}.\n * @private\n */\ngoog.net.XhrIo.prototype.cleanupSend_ = function() {\n  'use strict';\n  this.dispose();\n  goog.array.remove(goog.net.XhrIo.sendInstances_, this);\n};\n\n\n/**\n * Returns the number of milliseconds after which an incomplete request will be\n * aborted, or 0 if no timeout is set.\n * @return {number} Timeout interval in milliseconds.\n */\ngoog.net.XhrIo.prototype.getTimeoutInterval = function() {\n  'use strict';\n  return this.timeoutInterval_;\n};\n\n\n/**\n * Sets the number of milliseconds after which an incomplete request will be\n * aborted and a {@link goog.net.EventType.TIMEOUT} event raised; 0 means no\n * timeout is set.\n * @param {number} ms Timeout interval in milliseconds; 0 means none.\n */\ngoog.net.XhrIo.prototype.setTimeoutInterval = function(ms) {\n  'use strict';\n  this.timeoutInterval_ = Math.max(0, ms);\n};\n\n\n/**\n * Sets the desired type for the response. At time of writing, this is only\n * supported in very recent versions of WebKit (10.0.612.1 dev and later).\n *\n * If this is used, the response may only be accessed via {@link #getResponse}.\n *\n * @param {goog.net.XhrIo.ResponseType} type The desired type for the response.\n */\ngoog.net.XhrIo.prototype.setResponseType = function(type) {\n  'use strict';\n  this.responseType_ = type;\n};\n\n\n/**\n * Gets the desired type for the response.\n * @return {goog.net.XhrIo.ResponseType} The desired type for the response.\n */\ngoog.net.XhrIo.prototype.getResponseType = function() {\n  'use strict';\n  return this.responseType_;\n};\n\n\n/**\n * Sets whether a \"credentialed\" request that is aware of cookie and\n * authentication information should be made. This option is only supported by\n * browsers that support HTTP Access Control. As of this writing, this option\n * is not supported in IE.\n *\n * @param {boolean} withCredentials Whether this should be a \"credentialed\"\n *     request.\n */\ngoog.net.XhrIo.prototype.setWithCredentials = function(withCredentials) {\n  'use strict';\n  this.withCredentials_ = withCredentials;\n};\n\n\n/**\n * Gets whether a \"credentialed\" request is to be sent.\n * @return {boolean} The desired type for the response.\n */\ngoog.net.XhrIo.prototype.getWithCredentials = function() {\n  'use strict';\n  return this.withCredentials_;\n};\n\n\n/**\n * Sets whether progress events are enabled for this request. Note\n * that progress events require pre-flight OPTIONS request handling\n * for CORS requests, and may cause trouble with older browsers. See\n * progressEventsEnabled_ for details.\n * @param {boolean} enabled Whether progress events should be enabled.\n */\ngoog.net.XhrIo.prototype.setProgressEventsEnabled = function(enabled) {\n  'use strict';\n  this.progressEventsEnabled_ = enabled;\n};\n\n\n/**\n * Gets whether progress events are enabled.\n * @return {boolean} Whether progress events are enabled for this request.\n */\ngoog.net.XhrIo.prototype.getProgressEventsEnabled = function() {\n  'use strict';\n  return this.progressEventsEnabled_;\n};\n\n\n/**\n * Instance send that actually uses XMLHttpRequest to make a server call.\n * @param {string|goog.Uri} url Uri to make request to.\n * @param {string=} opt_method Send method, default: GET.\n * @param {ArrayBuffer|ArrayBufferView|Blob|Document|FormData|string=}\n *     opt_content Body data.\n * @param {Object|goog.structs.Map=} opt_headers Map of headers to add to the\n *     request.\n * @suppress {deprecated} Use deprecated goog.structs.forEach to allow different\n * types of parameters for opt_headers.\n */\ngoog.net.XhrIo.prototype.send = function(\n    url, opt_method, opt_content, opt_headers) {\n  'use strict';\n  if (this.xhr_) {\n    throw new Error(\n        '[goog.net.XhrIo] Object is active with another request=' +\n        this.lastUri_ + '; newUri=' + url);\n  }\n\n  const method = opt_method ? opt_method.toUpperCase() : 'GET';\n\n  this.lastUri_ = url;\n  this.lastError_ = '';\n  this.lastErrorCode_ = goog.net.ErrorCode.NO_ERROR;\n  this.lastMethod_ = method;\n  this.errorDispatched_ = false;\n  this.active_ = true;\n\n  // Use the factory to create the XHR object and options\n  this.xhr_ = this.createXhr();\n  this.xhrOptions_ = this.xmlHttpFactory_ ? this.xmlHttpFactory_.getOptions() :\n                                            goog.net.XmlHttp.getOptions();\n\n  // Set up the onreadystatechange callback\n  this.xhr_.onreadystatechange = goog.bind(this.onReadyStateChange_, this);\n\n  // Set up upload/download progress events, if progress events are supported.\n  if (this.getProgressEventsEnabled() && 'onprogress' in this.xhr_) {\n    this.xhr_.onprogress = goog.bind(function(e) {\n      'use strict';\n      this.onProgressHandler_(e, true);\n    }, this);\n    if (this.xhr_.upload) {\n      this.xhr_.upload.onprogress = goog.bind(this.onProgressHandler_, this);\n    }\n  }\n\n  /**\n   * Try to open the XMLHttpRequest (always async), if an error occurs here it\n   * is generally permission denied\n   */\n  try {\n    goog.log.fine(this.logger_, this.formatMsg_('Opening Xhr'));\n    this.inOpen_ = true;\n    this.xhr_.open(method, String(url), true);  // Always async!\n    this.inOpen_ = false;\n  } catch (err) {\n    goog.log.fine(\n        this.logger_, this.formatMsg_('Error opening Xhr: ' + err.message));\n    this.error_(goog.net.ErrorCode.EXCEPTION, err);\n    return;\n  }\n\n  // We can't use null since this won't allow requests with form data to have a\n  // content length specified which will cause some proxies to return a 411\n  // error.\n  const content = opt_content || '';\n\n  const headers = this.headers.clone();\n\n  // Add headers specific to this request\n  if (opt_headers) {\n    goog.structs.forEach(opt_headers, function(value, key) {\n      'use strict';\n      headers.set(key, value);\n    });\n  }\n\n  // Find whether a content type header is set, ignoring case.\n  // HTTP header names are case-insensitive.  See:\n  // http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2\n  const contentTypeKey =\n      goog.array.find(headers.getKeys(), goog.net.XhrIo.isContentTypeHeader_);\n\n  const contentIsFormData =\n      (goog.global['FormData'] && (content instanceof goog.global['FormData']));\n  if (goog.array.contains(goog.net.XhrIo.METHODS_WITH_FORM_DATA, method) &&\n      !contentTypeKey && !contentIsFormData) {\n    // For requests typically with form data, default to the url-encoded form\n    // content type unless this is a FormData request.  For FormData,\n    // the browser will automatically add a multipart/form-data content type\n    // with an appropriate multipart boundary.\n    headers.set(\n        goog.net.XhrIo.CONTENT_TYPE_HEADER, goog.net.XhrIo.FORM_CONTENT_TYPE);\n  }\n\n  // Add the headers to the Xhr object\n  headers.forEach(function(value, key) {\n    'use strict';\n    this.xhr_.setRequestHeader(key, value);\n  }, this);\n\n  if (this.responseType_) {\n    this.xhr_.responseType = this.responseType_;\n  }\n  // Set xhr_.withCredentials only when the value is different, or else in\n  // synchronous XMLHtppRequest.open Firefox will throw an exception.\n  // https://bugzilla.mozilla.org/show_bug.cgi?id=736340\n  if ('withCredentials' in this.xhr_ &&\n      this.xhr_.withCredentials !== this.withCredentials_) {\n    this.xhr_.withCredentials = this.withCredentials_;\n  }\n\n  /**\n   * Try to send the request, or other wise report an error (404 not found).\n   */\n  try {\n    this.cleanUpTimeoutTimer_();  // Paranoid, should never be running.\n    if (this.timeoutInterval_ > 0) {\n      this.useXhr2Timeout_ = goog.net.XhrIo.shouldUseXhr2Timeout_(this.xhr_);\n      goog.log.fine(\n          this.logger_, this.formatMsg_(\n                            'Will abort after ' + this.timeoutInterval_ +\n                            'ms if incomplete, xhr2 ' + this.useXhr2Timeout_));\n      if (this.useXhr2Timeout_) {\n        this.xhr_[goog.net.XhrIo.XHR2_TIMEOUT_] = this.timeoutInterval_;\n        this.xhr_[goog.net.XhrIo.XHR2_ON_TIMEOUT_] =\n            goog.bind(this.timeout_, this);\n      } else {\n        this.timeoutId_ =\n            goog.Timer.callOnce(this.timeout_, this.timeoutInterval_, this);\n      }\n    }\n    goog.log.fine(this.logger_, this.formatMsg_('Sending request'));\n    this.inSend_ = true;\n    this.xhr_.send(content);\n    this.inSend_ = false;\n\n  } catch (err) {\n    goog.log.fine(this.logger_, this.formatMsg_('Send error: ' + err.message));\n    this.error_(goog.net.ErrorCode.EXCEPTION, err);\n  }\n};\n\n\n/**\n * Determines if the argument is an XMLHttpRequest that supports the level 2\n * timeout value and event.\n *\n * Currently, FF 21.0 OS X has the fields but won't actually call the timeout\n * handler.  Perhaps the confusion in the bug referenced below hasn't\n * entirely been resolved.\n *\n * @see http://www.w3.org/TR/XMLHttpRequest/#the-timeout-attribute\n * @see https://bugzilla.mozilla.org/show_bug.cgi?id=525816\n *\n * @param {!goog.net.XhrLike.OrNative} xhr The request.\n * @return {boolean} True if the request supports level 2 timeout.\n * @private\n */\ngoog.net.XhrIo.shouldUseXhr2Timeout_ = function(xhr) {\n  'use strict';\n  return goog.userAgent.IE && goog.userAgent.isVersionOrHigher(9) &&\n      typeof xhr[goog.net.XhrIo.XHR2_TIMEOUT_] === 'number' &&\n      xhr[goog.net.XhrIo.XHR2_ON_TIMEOUT_] !== undefined;\n};\n\n\n/**\n * @param {string} header An HTTP header key.\n * @return {boolean} Whether the key is a content type header (ignoring\n *     case.\n * @private\n */\ngoog.net.XhrIo.isContentTypeHeader_ = function(header) {\n  'use strict';\n  return goog.string.caseInsensitiveEquals(\n      goog.net.XhrIo.CONTENT_TYPE_HEADER, header);\n};\n\n\n/**\n * Creates a new XHR object.\n * @return {!goog.net.XhrLike.OrNative} The newly created XHR object.\n * @protected\n */\ngoog.net.XhrIo.prototype.createXhr = function() {\n  'use strict';\n  return this.xmlHttpFactory_ ? this.xmlHttpFactory_.createInstance() :\n                                goog.net.XmlHttp();\n};\n\n\n/**\n * The request didn't complete after {@link goog.net.XhrIo#timeoutInterval_}\n * milliseconds; raises a {@link goog.net.EventType.TIMEOUT} event and aborts\n * the request.\n * @private\n */\ngoog.net.XhrIo.prototype.timeout_ = function() {\n  'use strict';\n  if (typeof goog == 'undefined') {\n    // If goog is undefined then the callback has occurred as the application\n    // is unloading and will error.  Thus we let it silently fail.\n  } else if (this.xhr_) {\n    this.lastError_ =\n        'Timed out after ' + this.timeoutInterval_ + 'ms, aborting';\n    this.lastErrorCode_ = goog.net.ErrorCode.TIMEOUT;\n    goog.log.fine(this.logger_, this.formatMsg_(this.lastError_));\n    this.dispatchEvent(goog.net.EventType.TIMEOUT);\n    this.abort(goog.net.ErrorCode.TIMEOUT);\n  }\n};\n\n\n/**\n * Something errorred, so inactivate, fire error callback and clean up\n * @param {goog.net.ErrorCode} errorCode The error code.\n * @param {Error} err The error object.\n * @private\n */\ngoog.net.XhrIo.prototype.error_ = function(errorCode, err) {\n  'use strict';\n  this.active_ = false;\n  if (this.xhr_) {\n    this.inAbort_ = true;\n    this.xhr_.abort();  // Ensures XHR isn't hung (FF)\n    this.inAbort_ = false;\n  }\n  this.lastError_ = err;\n  this.lastErrorCode_ = errorCode;\n  this.dispatchErrors_();\n  this.cleanUpXhr_();\n};\n\n\n/**\n * Dispatches COMPLETE and ERROR in case of an error. This ensures that we do\n * not dispatch multiple error events.\n * @private\n */\ngoog.net.XhrIo.prototype.dispatchErrors_ = function() {\n  'use strict';\n  if (!this.errorDispatched_) {\n    this.errorDispatched_ = true;\n    this.dispatchEvent(goog.net.EventType.COMPLETE);\n    this.dispatchEvent(goog.net.EventType.ERROR);\n  }\n};\n\n\n/**\n * Abort the current XMLHttpRequest\n * @param {goog.net.ErrorCode=} opt_failureCode Optional error code to use -\n *     defaults to ABORT.\n */\ngoog.net.XhrIo.prototype.abort = function(opt_failureCode) {\n  'use strict';\n  if (this.xhr_ && this.active_) {\n    goog.log.fine(this.logger_, this.formatMsg_('Aborting'));\n    this.active_ = false;\n    this.inAbort_ = true;\n    this.xhr_.abort();\n    this.inAbort_ = false;\n    this.lastErrorCode_ = opt_failureCode || goog.net.ErrorCode.ABORT;\n    this.dispatchEvent(goog.net.EventType.COMPLETE);\n    this.dispatchEvent(goog.net.EventType.ABORT);\n    this.cleanUpXhr_();\n  }\n};\n\n\n/**\n * Nullifies all callbacks to reduce risks of leaks.\n * @override\n * @protected\n */\ngoog.net.XhrIo.prototype.disposeInternal = function() {\n  'use strict';\n  if (this.xhr_) {\n    // We explicitly do not call xhr_.abort() unless active_ is still true.\n    // This is to avoid unnecessarily aborting a successful request when\n    // dispose() is called in a callback triggered by a complete response, but\n    // in which browser cleanup has not yet finished.\n    // (See http://b/issue?id=1684217.)\n    if (this.active_) {\n      this.active_ = false;\n      this.inAbort_ = true;\n      this.xhr_.abort();\n      this.inAbort_ = false;\n    }\n    this.cleanUpXhr_(true);\n  }\n\n  XhrIo.base(this, 'disposeInternal');\n};\n\n\n/**\n * Internal handler for the XHR object's readystatechange event.  This method\n * checks the status and the readystate and fires the correct callbacks.\n * If the request has ended, the handlers are cleaned up and the XHR object is\n * nullified.\n * @private\n */\ngoog.net.XhrIo.prototype.onReadyStateChange_ = function() {\n  'use strict';\n  if (this.isDisposed()) {\n    // This method is the target of an untracked goog.Timer.callOnce().\n    return;\n  }\n  if (!this.inOpen_ && !this.inSend_ && !this.inAbort_) {\n    // Were not being called from within a call to this.xhr_.send\n    // this.xhr_.abort, or this.xhr_.open, so this is an entry point\n    this.onReadyStateChangeEntryPoint_();\n  } else {\n    this.onReadyStateChangeHelper_();\n  }\n};\n\n\n/**\n * Used to protect the onreadystatechange handler entry point.  Necessary\n * as {#onReadyStateChange_} maybe called from within send or abort, this\n * method is only called when {#onReadyStateChange_} is called as an\n * entry point.\n * {@see #protectEntryPoints}\n * @private\n */\ngoog.net.XhrIo.prototype.onReadyStateChangeEntryPoint_ = function() {\n  'use strict';\n  this.onReadyStateChangeHelper_();\n};\n\n\n/**\n * Helper for {@link #onReadyStateChange_}.  This is used so that\n * entry point calls to {@link #onReadyStateChange_} can be routed through\n * {@link #onReadyStateChangeEntryPoint_}.\n * @private\n */\ngoog.net.XhrIo.prototype.onReadyStateChangeHelper_ = function() {\n  'use strict';\n  if (!this.active_) {\n    // can get called inside abort call\n    return;\n  }\n\n  if (typeof goog == 'undefined') {\n    // NOTE(user): If goog is undefined then the callback has occurred as the\n    // application is unloading and will error.  Thus we let it silently fail.\n\n  } else if (\n      this.xhrOptions_[goog.net.XmlHttp.OptionType.LOCAL_REQUEST_ERROR] &&\n      this.getReadyState() == goog.net.XmlHttp.ReadyState.COMPLETE &&\n      this.getStatus() == 2) {\n    // NOTE(user): In IE if send() errors on a *local* request the readystate\n    // is still changed to COMPLETE.  We need to ignore it and allow the\n    // try/catch around send() to pick up the error.\n    goog.log.fine(\n        this.logger_,\n        this.formatMsg_('Local request error detected and ignored'));\n\n  } else {\n    // In IE when the response has been cached we sometimes get the callback\n    // from inside the send call and this usually breaks code that assumes that\n    // XhrIo is asynchronous.  If that is the case we delay the callback\n    // using a timer.\n    if (this.inSend_ &&\n        this.getReadyState() == goog.net.XmlHttp.ReadyState.COMPLETE) {\n      goog.Timer.callOnce(this.onReadyStateChange_, 0, this);\n      return;\n    }\n\n    this.dispatchEvent(goog.net.EventType.READY_STATE_CHANGE);\n\n    // readyState indicates the transfer has finished\n    if (this.isComplete()) {\n      goog.log.fine(this.logger_, this.formatMsg_('Request complete'));\n\n      this.active_ = false;\n\n      try {\n        // Call the specific callbacks for success or failure. Only call the\n        // success if the status is 200 (HTTP_OK) or 304 (HTTP_CACHED)\n        if (this.isSuccess()) {\n          this.dispatchEvent(goog.net.EventType.COMPLETE);\n          this.dispatchEvent(goog.net.EventType.SUCCESS);\n        } else {\n          this.lastErrorCode_ = goog.net.ErrorCode.HTTP_ERROR;\n          this.lastError_ =\n              this.getStatusText() + ' [' + this.getStatus() + ']';\n          this.dispatchErrors_();\n        }\n      } finally {\n        this.cleanUpXhr_();\n      }\n    }\n  }\n};\n\n\n/**\n * Internal handler for the XHR object's onprogress event. Fires both a generic\n * PROGRESS event and either a DOWNLOAD_PROGRESS or UPLOAD_PROGRESS event to\n * allow specific binding for each XHR progress event.\n * @param {!ProgressEvent} e XHR progress event.\n * @param {boolean=} opt_isDownload Whether the current progress event is from a\n *     download. Used to determine whether DOWNLOAD_PROGRESS or UPLOAD_PROGRESS\n *     event should be dispatched.\n * @private\n */\ngoog.net.XhrIo.prototype.onProgressHandler_ = function(e, opt_isDownload) {\n  'use strict';\n  goog.asserts.assert(\n      e.type === goog.net.EventType.PROGRESS,\n      'goog.net.EventType.PROGRESS is of the same type as raw XHR progress.');\n  this.dispatchEvent(\n      goog.net.XhrIo.buildProgressEvent_(e, goog.net.EventType.PROGRESS));\n  this.dispatchEvent(\n      goog.net.XhrIo.buildProgressEvent_(\n          e, opt_isDownload ? goog.net.EventType.DOWNLOAD_PROGRESS :\n                              goog.net.EventType.UPLOAD_PROGRESS));\n};\n\n\n/**\n * Creates a representation of the native ProgressEvent. IE doesn't support\n * constructing ProgressEvent via \"new\", and the alternatives (e.g.,\n * ProgressEvent.initProgressEvent) are non-standard or deprecated.\n * @param {!ProgressEvent} e XHR progress event.\n * @param {!goog.net.EventType} eventType The type of the event.\n * @return {!ProgressEvent} The progress event.\n * @private\n */\ngoog.net.XhrIo.buildProgressEvent_ = function(e, eventType) {\n  'use strict';\n  return /** @type {!ProgressEvent} */ ({\n    type: eventType,\n    lengthComputable: e.lengthComputable,\n    loaded: e.loaded,\n    total: e.total,\n  });\n};\n\n\n/**\n * Remove the listener to protect against leaks, and nullify the XMLHttpRequest\n * object.\n * @param {boolean=} opt_fromDispose If this is from the dispose (don't want to\n *     fire any events).\n * @private\n */\ngoog.net.XhrIo.prototype.cleanUpXhr_ = function(opt_fromDispose) {\n  'use strict';\n  if (this.xhr_) {\n    // Cancel any pending timeout event handler.\n    this.cleanUpTimeoutTimer_();\n\n    // Save reference so we can mark it as closed after the READY event.  The\n    // READY event may trigger another request, thus we must nullify this.xhr_\n    const xhr = this.xhr_;\n    const clearedOnReadyStateChange =\n        this.xhrOptions_[goog.net.XmlHttp.OptionType.USE_NULL_FUNCTION] ?\n        goog.nullFunction :\n        null;\n    this.xhr_ = null;\n    this.xhrOptions_ = null;\n\n    if (!opt_fromDispose) {\n      this.dispatchEvent(goog.net.EventType.READY);\n    }\n\n    try {\n      // NOTE(user): Not nullifying in FireFox can still leak if the callbacks\n      // are defined in the same scope as the instance of XhrIo. But, IE doesn't\n      // allow you to set the onreadystatechange to NULL so nullFunction is\n      // used.\n      xhr.onreadystatechange = clearedOnReadyStateChange;\n    } catch (e) {\n      // This seems to occur with a Gears HTTP request. Delayed the setting of\n      // this onreadystatechange until after READY is sent out and catching the\n      // error to see if we can track down the problem.\n      goog.log.error(\n          this.logger_,\n          'Problem encountered resetting onreadystatechange: ' + e.message);\n    }\n  }\n};\n\n\n/**\n * Make sure the timeout timer isn't running.\n * @private\n */\ngoog.net.XhrIo.prototype.cleanUpTimeoutTimer_ = function() {\n  'use strict';\n  if (this.xhr_ && this.useXhr2Timeout_) {\n    this.xhr_[goog.net.XhrIo.XHR2_ON_TIMEOUT_] = null;\n  }\n  if (this.timeoutId_) {\n    goog.Timer.clear(this.timeoutId_);\n    this.timeoutId_ = null;\n  }\n};\n\n\n/**\n * @return {boolean} Whether there is an active request.\n */\ngoog.net.XhrIo.prototype.isActive = function() {\n  'use strict';\n  return !!this.xhr_;\n};\n\n\n/**\n * @return {boolean} Whether the request has completed.\n */\ngoog.net.XhrIo.prototype.isComplete = function() {\n  'use strict';\n  return this.getReadyState() == goog.net.XmlHttp.ReadyState.COMPLETE;\n};\n\n\n/**\n * @return {boolean} Whether the request completed with a success.\n */\ngoog.net.XhrIo.prototype.isSuccess = function() {\n  'use strict';\n  const status = this.getStatus();\n  // A zero status code is considered successful for local files.\n  return goog.net.HttpStatus.isSuccess(status) ||\n      status === 0 && !this.isLastUriEffectiveSchemeHttp_();\n};\n\n\n/**\n * @return {boolean} whether the effective scheme of the last URI that was\n *     fetched was 'http' or 'https'.\n * @private\n */\ngoog.net.XhrIo.prototype.isLastUriEffectiveSchemeHttp_ = function() {\n  'use strict';\n  const scheme = goog.uri.utils.getEffectiveScheme(String(this.lastUri_));\n  return goog.net.XhrIo.HTTP_SCHEME_PATTERN.test(scheme);\n};\n\n\n/**\n * Get the readystate from the Xhr object\n * Will only return correct result when called from the context of a callback\n * @return {goog.net.XmlHttp.ReadyState} goog.net.XmlHttp.ReadyState.*.\n */\ngoog.net.XhrIo.prototype.getReadyState = function() {\n  'use strict';\n  return this.xhr_ ?\n      /** @type {goog.net.XmlHttp.ReadyState} */ (this.xhr_.readyState) :\n      goog.net.XmlHttp.ReadyState.UNINITIALIZED;\n};\n\n\n/**\n * Get the status from the Xhr object\n * Will only return correct result when called from the context of a callback\n * @return {number} Http status.\n */\ngoog.net.XhrIo.prototype.getStatus = function() {\n  'use strict';\n  /**\n   * IE doesn't like you checking status until the readystate is greater than 2\n   * (i.e. it is receiving or complete).  The try/catch is used for when the\n   * page is unloading and an ERROR_NOT_AVAILABLE may occur when accessing xhr_.\n   */\n  try {\n    return this.getReadyState() > goog.net.XmlHttp.ReadyState.LOADED ?\n        this.xhr_.status :\n        -1;\n  } catch (e) {\n    return -1;\n  }\n};\n\n\n/**\n * Get the status text from the Xhr object\n * Will only return correct result when called from the context of a callback\n * @return {string} Status text.\n */\ngoog.net.XhrIo.prototype.getStatusText = function() {\n  'use strict';\n  /**\n   * IE doesn't like you checking status until the readystate is greater than 2\n   * (i.e. it is receiving or complete).  The try/catch is used for when the\n   * page is unloading and an ERROR_NOT_AVAILABLE may occur when accessing xhr_.\n   */\n  try {\n    return this.getReadyState() > goog.net.XmlHttp.ReadyState.LOADED ?\n        this.xhr_.statusText :\n        '';\n  } catch (e) {\n    goog.log.fine(this.logger_, 'Can not get status: ' + e.message);\n    return '';\n  }\n};\n\n\n/**\n * Get the last Uri that was requested\n * @return {string} Last Uri.\n */\ngoog.net.XhrIo.prototype.getLastUri = function() {\n  'use strict';\n  return String(this.lastUri_);\n};\n\n\n/**\n * Get the response text from the Xhr object\n * Will only return correct result when called from the context of a callback.\n * @return {string} Result from the server, or '' if no result available.\n */\ngoog.net.XhrIo.prototype.getResponseText = function() {\n  'use strict';\n  try {\n    return this.xhr_ ? this.xhr_.responseText : '';\n  } catch (e) {\n    // http://www.w3.org/TR/XMLHttpRequest/#the-responsetext-attribute\n    // states that responseText should return '' (and responseXML null)\n    // when the state is not LOADING or DONE. Instead, IE can\n    // throw unexpected exceptions, for example when a request is aborted\n    // or no data is available yet.\n    goog.log.fine(this.logger_, 'Can not get responseText: ' + e.message);\n    return '';\n  }\n};\n\n\n/**\n * Get the response body from the Xhr object. This property is only available\n * in IE since version 7 according to MSDN:\n * http://msdn.microsoft.com/en-us/library/ie/ms534368(v=vs.85).aspx\n * Will only return correct result when called from the context of a callback.\n *\n * One option is to construct a VBArray from the returned object and convert\n * it to a JavaScript array using the toArray method:\n * `(new window['VBArray'](xhrIo.getResponseBody())).toArray()`\n * This will result in an array of numbers in the range of [0..255]\n *\n * Another option is to use the VBScript CStr method to convert it into a\n * string as outlined in http://stackoverflow.com/questions/1919972\n *\n * @return {Object} Binary result from the server or null if not available.\n */\ngoog.net.XhrIo.prototype.getResponseBody = function() {\n  'use strict';\n  try {\n    if (this.xhr_ && 'responseBody' in this.xhr_) {\n      return this.xhr_['responseBody'];\n    }\n  } catch (e) {\n    // IE can throw unexpected exceptions, for example when a request is aborted\n    // or no data is yet available.\n    goog.log.fine(this.logger_, 'Can not get responseBody: ' + e.message);\n  }\n  return null;\n};\n\n\n/**\n * Get the response XML from the Xhr object\n * Will only return correct result when called from the context of a callback.\n * @return {Document} The DOM Document representing the XML file, or null\n * if no result available.\n */\ngoog.net.XhrIo.prototype.getResponseXml = function() {\n  'use strict';\n  try {\n    return this.xhr_ ? this.xhr_.responseXML : null;\n  } catch (e) {\n    goog.log.fine(this.logger_, 'Can not get responseXML: ' + e.message);\n    return null;\n  }\n};\n\n\n/**\n * Get the response and evaluates it as JSON from the Xhr object\n * Will only return correct result when called from the context of a callback\n * @param {string=} opt_xssiPrefix Optional XSSI prefix string to use for\n *     stripping of the response before parsing. This needs to be set only if\n *     your backend server prepends the same prefix string to the JSON response.\n * @throws Error if the response text is invalid JSON.\n * @return {Object|undefined} JavaScript object.\n */\ngoog.net.XhrIo.prototype.getResponseJson = function(opt_xssiPrefix) {\n  'use strict';\n  if (!this.xhr_) {\n    return undefined;\n  }\n\n  let responseText = this.xhr_.responseText;\n  if (opt_xssiPrefix && responseText.indexOf(opt_xssiPrefix) == 0) {\n    responseText = responseText.substring(opt_xssiPrefix.length);\n  }\n\n  return goog.json.hybrid.parse(responseText);\n};\n\n\n/**\n * Get the response as the type specificed by {@link #setResponseType}. At time\n * of writing, this is only directly supported in very recent versions of WebKit\n * (10.0.612.1 dev and later). If the field is not supported directly, we will\n * try to emulate it.\n *\n * Emulating the response means following the rules laid out at\n * http://www.w3.org/TR/XMLHttpRequest/#the-response-attribute\n *\n * On browsers with no support for this (Chrome < 10, Firefox < 4, etc), only\n * response types of DEFAULT or TEXT may be used, and the response returned will\n * be the text response.\n *\n * On browsers with Mozilla's draft support for array buffers (Firefox 4, 5),\n * only response types of DEFAULT, TEXT, and ARRAY_BUFFER may be used, and the\n * response returned will be either the text response or the Mozilla\n * implementation of the array buffer response.\n *\n * On browsers will full support, any valid response type supported by the\n * browser may be used, and the response provided by the browser will be\n * returned.\n *\n * @return {*} The response.\n */\ngoog.net.XhrIo.prototype.getResponse = function() {\n  'use strict';\n  try {\n    if (!this.xhr_) {\n      return null;\n    }\n    if ('response' in this.xhr_) {\n      return this.xhr_.response;\n    }\n    switch (this.responseType_) {\n      case ResponseType.DEFAULT:\n      case ResponseType.TEXT:\n        return this.xhr_.responseText;\n      // DOCUMENT and BLOB don't need to be handled here because they are\n      // introduced in the same spec that adds the .response field, and would\n      // have been caught above.\n      // ARRAY_BUFFER needs an implementation for Firefox 4, where it was\n      // implemented using a draft spec rather than the final spec.\n      case ResponseType.ARRAY_BUFFER:\n        if ('mozResponseArrayBuffer' in this.xhr_) {\n          return this.xhr_.mozResponseArrayBuffer;\n        }\n    }\n    // Fell through to a response type that is not supported on this browser.\n    goog.log.error(\n        this.logger_, 'Response type ' + this.responseType_ + ' is not ' +\n            'supported on this browser');\n    return null;\n  } catch (e) {\n    goog.log.fine(this.logger_, 'Can not get response: ' + e.message);\n    return null;\n  }\n};\n\n\n/**\n * Get the value of the response-header with the given name from the Xhr object\n * Will only return correct result when called from the context of a callback\n * and the request has completed\n * @param {string} key The name of the response-header to retrieve.\n * @return {string|undefined} The value of the response-header named key.\n */\ngoog.net.XhrIo.prototype.getResponseHeader = function(key) {\n  'use strict';\n  if (!this.xhr_ || !this.isComplete()) {\n    return undefined;\n  }\n\n  const value = this.xhr_.getResponseHeader(key);\n  return value === null ? undefined : value;\n};\n\n\n/**\n * Gets the text of all the headers in the response.\n * Will only return correct result when called from the context of a callback\n * and the request has completed.\n * @return {string} The value of the response headers or empty string.\n */\ngoog.net.XhrIo.prototype.getAllResponseHeaders = function() {\n  'use strict';\n  // getAllResponseHeaders can return null if no response has been received,\n  // ensure we always return an empty string.\n  return this.xhr_ && this.isComplete() ?\n      (this.xhr_.getAllResponseHeaders() || '') :\n      '';\n};\n\n\n/**\n * Returns all response headers as a key-value map.\n * Multiple values for the same header key can be combined into one,\n * separated by a comma and a space.\n * Note that the native getResponseHeader method for retrieving a single header\n * does a case insensitive match on the header name. This method does not\n * include any case normalization logic, it will just return a key-value\n * representation of the headers.\n * See: http://www.w3.org/TR/XMLHttpRequest/#the-getresponseheader()-method\n * @return {!Object<string, string>} An object with the header keys as keys\n *     and header values as values.\n */\ngoog.net.XhrIo.prototype.getResponseHeaders = function() {\n  'use strict';\n  // TODO(user): Make this function parse headers as per the spec\n  // (https://tools.ietf.org/html/rfc2616#section-4.2).\n\n  const headersObject = {};\n  const headersArray = this.getAllResponseHeaders().split('\\r\\n');\n  for (let i = 0; i < headersArray.length; i++) {\n    if (goog.string.isEmptyOrWhitespace(headersArray[i])) {\n      continue;\n    }\n    const keyValue =\n        goog.string.splitLimit(headersArray[i], ':', /* maxSplitCount= */ 1);\n    const key = keyValue[0];\n    let value = keyValue[1];\n\n    if (typeof value !== 'string') {\n      // There must be a value but it can be the empty string.\n      continue;\n    }\n\n    // Whitespace at the start and end of the value is meaningless.\n    value = value.trim();\n    // The key should not contain whitespace but we currently ignore that.\n\n    const values = headersObject[key] || [];\n    headersObject[key] = values;\n    values.push(value);\n  }\n\n  return goog.object.map(headersObject, function(values) {\n    'use strict';\n    return values.join(', ');\n  });\n};\n\n\n/**\n * Get the value of the response-header with the given name from the Xhr object.\n * As opposed to {@link #getResponseHeader}, this method does not require that\n * the request has completed.\n * @param {string} key The name of the response-header to retrieve.\n * @return {?string} The value of the response-header, or null if it is\n *     unavailable.\n */\ngoog.net.XhrIo.prototype.getStreamingResponseHeader = function(key) {\n  'use strict';\n  return this.xhr_ ? this.xhr_.getResponseHeader(key) : null;\n};\n\n\n/**\n * Gets the text of all the headers in the response. As opposed to\n * {@link #getAllResponseHeaders}, this method does not require that the request\n * has completed.\n * @return {string} The value of the response headers or empty string.\n */\ngoog.net.XhrIo.prototype.getAllStreamingResponseHeaders = function() {\n  'use strict';\n  return this.xhr_ ? this.xhr_.getAllResponseHeaders() : '';\n};\n\n\n/**\n * Get the last error message\n * @return {!goog.net.ErrorCode} Last error code.\n */\ngoog.net.XhrIo.prototype.getLastErrorCode = function() {\n  'use strict';\n  return this.lastErrorCode_;\n};\n\n\n/**\n * Get the last error message\n * @return {string} Last error message.\n */\ngoog.net.XhrIo.prototype.getLastError = function() {\n  'use strict';\n  return typeof this.lastError_ === 'string' ? this.lastError_ :\n                                               String(this.lastError_);\n};\n\n\n/**\n * Adds the last method, status and URI to the message.  This is used to add\n * this information to the logging calls.\n * @param {string} msg The message text that we want to add the extra text to.\n * @return {string} The message with the extra text appended.\n * @private\n */\ngoog.net.XhrIo.prototype.formatMsg_ = function(msg) {\n  'use strict';\n  return msg + ' [' + this.lastMethod_ + ' ' + this.lastUri_ + ' ' +\n      this.getStatus() + ']';\n};\n\n\n// Register the xhr handler as an entry point, so that\n// it can be monitored for exception handling, etc.\ngoog.debug.entryPointRegistry.register(\n    /**\n     * @param {function(!Function): !Function} transformer The transforming\n     *     function.\n     */\n    function(transformer) {\n      'use strict';\n      goog.net.XhrIo.prototype.onReadyStateChangeEntryPoint_ =\n          transformer(goog.net.XhrIo.prototype.onReadyStateChangeEntryPoint_);\n    });\n});  // goog.scope\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview A pool of forward channel requests to enable real-time\n * messaging from the client to server.\n *\n */\n\ngoog.module('goog.labs.net.webChannel.ForwardChannelRequestPool');\n\ngoog.module.declareLegacyNamespace();\n\nvar ChannelRequest = goog.require('goog.labs.net.webChannel.ChannelRequest');\nvar Wire = goog.require('goog.labs.net.webChannel.Wire');\nvar array = goog.require('goog.array');\nvar googString = goog.require('goog.string');\n\n\n/**\n * This class represents the state of all forward channel requests.\n *\n * @param {number=} opt_maxPoolSize The maximum pool size.\n *\n * @struct @constructor @final\n */\nvar ForwardChannelRequestPool = function(opt_maxPoolSize) {\n  /**\n   * The max pool size as configured.\n   *\n   * @private {number}\n   */\n  this.maxPoolSizeConfigured_ =\n      opt_maxPoolSize || ForwardChannelRequestPool.MAX_POOL_SIZE_;\n\n  /**\n   * The current size limit of the request pool. This limit is meant to be\n   * read-only after the channel is fully opened.\n   *\n   * If SPDY or HTTP2 is enabled, set it to the max pool size, which is also\n   * configurable.\n   *\n   * @private {number}\n   */\n  this.maxSize_ = ForwardChannelRequestPool.isSpdyOrHttp2Enabled_() ?\n      this.maxPoolSizeConfigured_ :\n      1;\n\n  /**\n   * The container for all the pending request objects.\n   *\n   * @private {?Set<?ChannelRequest>}\n   */\n  this.requestPool_ = null;\n\n  if (this.maxSize_ > 1) {\n    this.requestPool_ = new Set();\n  }\n\n  /**\n   * The single request object when the pool size is limited to one.\n   *\n   * @private {?ChannelRequest}\n   */\n  this.request_ = null;\n\n  /**\n   * Saved pending messages when the pool is cancelled.\n   *\n   * @private {!Array<Wire.QueuedMap>}\n   */\n  this.pendingMessages_ = [];\n};\n\n\n/**\n * The default size limit of the request pool.\n *\n * @private {number}\n */\nForwardChannelRequestPool.MAX_POOL_SIZE_ = 10;\n\n\n/**\n * @return {boolean} True if SPDY or HTTP2 is enabled. Uses chrome-specific APIs\n *     as a fallback and will always return false for other browsers where\n *     PerformanceNavigationTiming is not available.\n * @private\n */\nForwardChannelRequestPool.isSpdyOrHttp2Enabled_ = function() {\n  if (goog.global.PerformanceNavigationTiming) {\n    var entrys = /** @type {!Array<!PerformanceNavigationTiming>} */ (\n        goog.global.performance.getEntriesByType('navigation'));\n    return entrys.length > 0 &&\n        (entrys[0].nextHopProtocol == 'hq' ||\n         entrys[0].nextHopProtocol == 'h2');\n  }\n  return !!(\n      goog.global.chrome && goog.global.chrome.loadTimes &&\n      goog.global.chrome.loadTimes() &&\n      goog.global.chrome.loadTimes().wasFetchedViaSpdy);\n};\n\n\n/**\n * Once we know the client protocol (from the handshake), check if we need\n * enable the request pool accordingly. This is more robust than using\n * browser-internal APIs (specific to Chrome).\n *\n * @param {string} clientProtocol The client protocol\n */\nForwardChannelRequestPool.prototype.applyClientProtocol = function(\n    clientProtocol) {\n  if (this.requestPool_) {\n    return;\n  }\n\n  if (googString.contains(clientProtocol, 'spdy') ||\n      googString.contains(clientProtocol, 'quic') ||\n      googString.contains(clientProtocol, 'h2')) {\n    this.maxSize_ = this.maxPoolSizeConfigured_;\n    this.requestPool_ = new Set();\n    if (this.request_) {\n      this.addRequest(this.request_);\n      this.request_ = null;\n    }\n  }\n};\n\n\n/**\n * @return {boolean} True if the pool is full.\n */\nForwardChannelRequestPool.prototype.isFull = function() {\n  if (this.request_) {\n    return true;\n  }\n\n  if (this.requestPool_) {\n    return this.requestPool_.size >= this.maxSize_;\n  }\n\n  return false;\n};\n\n\n/**\n * @return {number} The current size limit.\n */\nForwardChannelRequestPool.prototype.getMaxSize = function() {\n  return this.maxSize_;\n};\n\n\n/**\n * @return {number} The number of pending requests in the pool.\n */\nForwardChannelRequestPool.prototype.getRequestCount = function() {\n  if (this.request_) {\n    return 1;\n  }\n\n  if (this.requestPool_) {\n    return this.requestPool_.size;\n  }\n\n  return 0;\n};\n\n\n/**\n * @param {ChannelRequest} req The channel request.\n * @return {boolean} True if the request is a included inside the pool.\n */\nForwardChannelRequestPool.prototype.hasRequest = function(req) {\n  if (this.request_) {\n    return this.request_ == req;\n  }\n\n  if (this.requestPool_) {\n    return this.requestPool_.has(req);\n  }\n\n  return false;\n};\n\n\n/**\n * Adds a new request to the pool.\n *\n * @param {!ChannelRequest} req The new channel request.\n */\nForwardChannelRequestPool.prototype.addRequest = function(req) {\n  if (this.requestPool_) {\n    this.requestPool_.add(req);\n  } else {\n    this.request_ = req;\n  }\n};\n\n\n/**\n * Removes the given request from the pool.\n *\n * @param {ChannelRequest} req The channel request.\n * @return {boolean} Whether the request has been removed from the pool.\n */\nForwardChannelRequestPool.prototype.removeRequest = function(req) {\n  if (this.request_ && this.request_ == req) {\n    this.request_ = null;\n    return true;\n  }\n\n  if (this.requestPool_ && this.requestPool_.has(req)) {\n    this.requestPool_.delete(req);\n    return true;\n  }\n\n  return false;\n};\n\n\n/**\n * Clears the pool and cancel all the pending requests.\n */\nForwardChannelRequestPool.prototype.cancel = function() {\n  // save any pending messages\n  this.pendingMessages_ = this.getPendingMessages();\n\n  if (this.request_) {\n    this.request_.cancel();\n    this.request_ = null;\n    return;\n  }\n\n  if (this.requestPool_ && this.requestPool_.size !== 0) {\n    for (const val of this.requestPool_.values()) {\n      val.cancel();\n    }\n    this.requestPool_.clear();\n  }\n};\n\n\n/**\n * @return {boolean} Whether there are any pending requests.\n */\nForwardChannelRequestPool.prototype.hasPendingRequest = function() {\n  return (this.request_ != null) ||\n      (this.requestPool_ != null && this.requestPool_.size !== 0);\n};\n\n\n/**\n * @return {!Array<Wire.QueuedMap>} All the pending messages from the pool,\n *     as a new array.\n */\nForwardChannelRequestPool.prototype.getPendingMessages = function() {\n  if (this.request_ != null) {\n    return this.pendingMessages_.concat(this.request_.getPendingMessages());\n  }\n\n  if (this.requestPool_ != null && this.requestPool_.size !== 0) {\n    let result = this.pendingMessages_;\n    for (const val of this.requestPool_.values()) {\n      result = result.concat(val.getPendingMessages());\n    }\n    return result;\n  }\n\n  return array.clone(this.pendingMessages_);\n};\n\n\n/**\n * Records pending messages, e.g. when a request receives a failed response.\n *\n * @param {!Array<Wire.QueuedMap>} messages Pending messages.\n */\nForwardChannelRequestPool.prototype.addPendingMessages = function(messages) {\n  this.pendingMessages_ = this.pendingMessages_.concat(messages);\n};\n\n\n/**\n * Clears any recorded pending messages.\n */\nForwardChannelRequestPool.prototype.clearPendingMessages = function() {\n  this.pendingMessages_.length = 0;\n};\n\n\n/**\n * Cancels all pending requests and force the completion of channel requests.\n *\n * Need go through the standard onRequestComplete logic to expose the max-retry\n * failure in the standard way.\n *\n * @param {function(!ChannelRequest)} onComplete The completion callback.\n * @return {boolean} true if any request has been forced to complete.\n */\nForwardChannelRequestPool.prototype.forceComplete = function(onComplete) {\n  if (this.request_ != null) {\n    this.request_.cancel();\n    onComplete(this.request_);\n    return true;\n  }\n\n  if (this.requestPool_ && this.requestPool_.size !== 0) {\n    for (const val of this.requestPool_.values()) {\n      val.cancel();\n      onComplete(val);\n    }\n    return true;\n  }\n\n  return false;\n};\n\nexports = ForwardChannelRequestPool;\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Generics method for collection-like classes and objects.\n *\n *\n * This file contains functions to work with collections. It supports using\n * Map, Set, Array and Object and other classes that implement collection-like\n * methods.\n * @suppress {strictMissingProperties}\n */\n\n\ngoog.provide('goog.structs');\n\ngoog.require('goog.array');\ngoog.require('goog.object');\n\n\n// We treat an object as a dictionary if it has getKeys or it is an object that\n// isn't arrayLike.\n\n\n/**\n * Returns the number of values in the collection-like object.\n * @param {Object} col The collection-like object.\n * @return {number} The number of values in the collection-like object.\n */\ngoog.structs.getCount = function(col) {\n  'use strict';\n  if (col.getCount && typeof col.getCount == 'function') {\n    return col.getCount();\n  }\n  if (goog.isArrayLike(col) || typeof col === 'string') {\n    return col.length;\n  }\n  return goog.object.getCount(col);\n};\n\n\n/**\n * Returns the values of the collection-like object.\n * @param {Object} col The collection-like object.\n * @return {!Array<?>} The values in the collection-like object.\n */\ngoog.structs.getValues = function(col) {\n  'use strict';\n  if (col.getValues && typeof col.getValues == 'function') {\n    return col.getValues();\n  }\n  if (typeof col === 'string') {\n    return col.split('');\n  }\n  if (goog.isArrayLike(col)) {\n    var rv = [];\n    var l = col.length;\n    for (var i = 0; i < l; i++) {\n      rv.push(col[i]);\n    }\n    return rv;\n  }\n  return goog.object.getValues(col);\n};\n\n\n/**\n * Returns the keys of the collection. Some collections have no notion of\n * keys/indexes and this function will return undefined in those cases.\n * @param {Object} col The collection-like object.\n * @return {!Array|undefined} The keys in the collection.\n */\ngoog.structs.getKeys = function(col) {\n  'use strict';\n  if (col.getKeys && typeof col.getKeys == 'function') {\n    return col.getKeys();\n  }\n  // if we have getValues but no getKeys we know this is a key-less collection\n  if (col.getValues && typeof col.getValues == 'function') {\n    return undefined;\n  }\n  if (goog.isArrayLike(col) || typeof col === 'string') {\n    var rv = [];\n    var l = col.length;\n    for (var i = 0; i < l; i++) {\n      rv.push(i);\n    }\n    return rv;\n  }\n\n  return goog.object.getKeys(col);\n};\n\n\n/**\n * Whether the collection contains the given value. This is O(n) and uses\n * equals (==) to test the existence.\n * @param {Object} col The collection-like object.\n * @param {*} val The value to check for.\n * @return {boolean} True if the map contains the value.\n */\ngoog.structs.contains = function(col, val) {\n  'use strict';\n  if (col.contains && typeof col.contains == 'function') {\n    return col.contains(val);\n  }\n  if (col.containsValue && typeof col.containsValue == 'function') {\n    return col.containsValue(val);\n  }\n  if (goog.isArrayLike(col) || typeof col === 'string') {\n    return goog.array.contains(/** @type {!Array<?>} */ (col), val);\n  }\n  return goog.object.containsValue(col, val);\n};\n\n\n/**\n * Whether the collection is empty.\n * @param {Object} col The collection-like object.\n * @return {boolean} True if empty.\n */\ngoog.structs.isEmpty = function(col) {\n  'use strict';\n  if (col.isEmpty && typeof col.isEmpty == 'function') {\n    return col.isEmpty();\n  }\n\n  // We do not use goog.string.isEmptyOrWhitespace because here we treat the\n  // string as\n  // collection and as such even whitespace matters\n\n  if (goog.isArrayLike(col) || typeof col === 'string') {\n    return goog.array.isEmpty(/** @type {!Array<?>} */ (col));\n  }\n  return goog.object.isEmpty(col);\n};\n\n\n/**\n * Removes all the elements from the collection.\n * @param {Object} col The collection-like object.\n */\ngoog.structs.clear = function(col) {\n  'use strict';\n  // NOTE(arv): This should not contain strings because strings are immutable\n  if (col.clear && typeof col.clear == 'function') {\n    col.clear();\n  } else if (goog.isArrayLike(col)) {\n    goog.array.clear(/** @type {IArrayLike<?>} */ (col));\n  } else {\n    goog.object.clear(col);\n  }\n};\n\n\n/**\n * Calls a function for each value in a collection. The function takes\n * three arguments; the value, the key and the collection.\n *\n * @param {S} col The collection-like object.\n * @param {function(this:T,?,?,S):?} f The function to call for every value.\n *     This function takes\n *     3 arguments (the value, the key or undefined if the collection has no\n *     notion of keys, and the collection) and the return value is irrelevant.\n * @param {T=} opt_obj The object to be used as the value of 'this'\n *     within `f`.\n * @template T,S\n * @deprecated Use a more specific method, e.g. goog.array.forEach,\n *     goog.object.forEach, or for-of.\n */\ngoog.structs.forEach = function(col, f, opt_obj) {\n  'use strict';\n  if (col.forEach && typeof col.forEach == 'function') {\n    col.forEach(f, opt_obj);\n  } else if (goog.isArrayLike(col) || typeof col === 'string') {\n    goog.array.forEach(/** @type {!Array<?>} */ (col), f, opt_obj);\n  } else {\n    var keys = goog.structs.getKeys(col);\n    var values = goog.structs.getValues(col);\n    var l = values.length;\n    for (var i = 0; i < l; i++) {\n      f.call(/** @type {?} */ (opt_obj), values[i], keys && keys[i], col);\n    }\n  }\n};\n\n\n/**\n * Calls a function for every value in the collection. When a call returns true,\n * adds the value to a new collection (Array is returned by default).\n *\n * @param {S} col The collection-like object.\n * @param {function(this:T,?,?,S):boolean} f The function to call for every\n *     value. This function takes\n *     3 arguments (the value, the key or undefined if the collection has no\n *     notion of keys, and the collection) and should return a Boolean. If the\n *     return value is true the value is added to the result collection. If it\n *     is false the value is not included.\n * @param {T=} opt_obj The object to be used as the value of 'this'\n *     within `f`.\n * @return {!Object|!Array<?>} A new collection where the passed values are\n *     present. If col is a key-less collection an array is returned.  If col\n *     has keys and values a plain old JS object is returned.\n * @template T,S\n */\ngoog.structs.filter = function(col, f, opt_obj) {\n  'use strict';\n  if (typeof col.filter == 'function') {\n    return col.filter(f, opt_obj);\n  }\n  if (goog.isArrayLike(col) || typeof col === 'string') {\n    return goog.array.filter(/** @type {!Array<?>} */ (col), f, opt_obj);\n  }\n\n  var rv;\n  var keys = goog.structs.getKeys(col);\n  var values = goog.structs.getValues(col);\n  var l = values.length;\n  if (keys) {\n    rv = {};\n    for (var i = 0; i < l; i++) {\n      if (f.call(/** @type {?} */ (opt_obj), values[i], keys[i], col)) {\n        rv[keys[i]] = values[i];\n      }\n    }\n  } else {\n    // We should not use goog.array.filter here since we want to make sure that\n    // the index is undefined as well as make sure that col is passed to the\n    // function.\n    rv = [];\n    for (var i = 0; i < l; i++) {\n      if (f.call(opt_obj, values[i], undefined, col)) {\n        rv.push(values[i]);\n      }\n    }\n  }\n  return rv;\n};\n\n\n/**\n * Calls a function for every value in the collection and adds the result into a\n * new collection (defaults to creating a new Array).\n *\n * @param {S} col The collection-like object.\n * @param {function(this:T,?,?,S):V} f The function to call for every value.\n *     This function takes 3 arguments (the value, the key or undefined if the\n *     collection has no notion of keys, and the collection) and should return\n *     something. The result will be used as the value in the new collection.\n * @param {T=} opt_obj  The object to be used as the value of 'this'\n *     within `f`.\n * @return {!Object<V>|!Array<V>} A new collection with the new values.  If\n *     col is a key-less collection an array is returned.  If col has keys and\n *     values a plain old JS object is returned.\n * @template T,S,V\n */\ngoog.structs.map = function(col, f, opt_obj) {\n  'use strict';\n  if (typeof col.map == 'function') {\n    return col.map(f, opt_obj);\n  }\n  if (goog.isArrayLike(col) || typeof col === 'string') {\n    return goog.array.map(/** @type {!Array<?>} */ (col), f, opt_obj);\n  }\n\n  var rv;\n  var keys = goog.structs.getKeys(col);\n  var values = goog.structs.getValues(col);\n  var l = values.length;\n  if (keys) {\n    rv = {};\n    for (var i = 0; i < l; i++) {\n      rv[keys[i]] = f.call(/** @type {?} */ (opt_obj), values[i], keys[i], col);\n    }\n  } else {\n    // We should not use goog.array.map here since we want to make sure that\n    // the index is undefined as well as make sure that col is passed to the\n    // function.\n    rv = [];\n    for (var i = 0; i < l; i++) {\n      rv[i] = f.call(/** @type {?} */ (opt_obj), values[i], undefined, col);\n    }\n  }\n  return rv;\n};\n\n\n/**\n * Calls f for each value in a collection. If any call returns true this returns\n * true (without checking the rest). If all returns false this returns false.\n *\n * @param {S} col The collection-like object.\n * @param {function(this:T,?,?,S):boolean} f The function to call for every\n *     value. This function takes 3 arguments (the value, the key or undefined\n *     if the collection has no notion of keys, and the collection) and should\n *     return a boolean.\n * @param {T=} opt_obj  The object to be used as the value of 'this'\n *     within `f`.\n * @return {boolean} True if any value passes the test.\n * @template T,S\n */\ngoog.structs.some = function(col, f, opt_obj) {\n  'use strict';\n  if (typeof col.some == 'function') {\n    return col.some(f, opt_obj);\n  }\n  if (goog.isArrayLike(col) || typeof col === 'string') {\n    return goog.array.some(/** @type {!Array<?>} */ (col), f, opt_obj);\n  }\n  var keys = goog.structs.getKeys(col);\n  var values = goog.structs.getValues(col);\n  var l = values.length;\n  for (var i = 0; i < l; i++) {\n    if (f.call(/** @type {?} */ (opt_obj), values[i], keys && keys[i], col)) {\n      return true;\n    }\n  }\n  return false;\n};\n\n\n/**\n * Calls f for each value in a collection. If all calls return true this return\n * true this returns true. If any returns false this returns false at this point\n *  and does not continue to check the remaining values.\n *\n * @param {S} col The collection-like object.\n * @param {function(this:T,?,?,S):boolean} f The function to call for every\n *     value. This function takes 3 arguments (the value, the key or\n *     undefined if the collection has no notion of keys, and the collection)\n *     and should return a boolean.\n * @param {T=} opt_obj  The object to be used as the value of 'this'\n *     within `f`.\n * @return {boolean} True if all key-value pairs pass the test.\n * @template T,S\n */\ngoog.structs.every = function(col, f, opt_obj) {\n  'use strict';\n  if (typeof col.every == 'function') {\n    return col.every(f, opt_obj);\n  }\n  if (goog.isArrayLike(col) || typeof col === 'string') {\n    return goog.array.every(/** @type {!Array<?>} */ (col), f, opt_obj);\n  }\n  var keys = goog.structs.getKeys(col);\n  var values = goog.structs.getValues(col);\n  var l = values.length;\n  for (var i = 0; i < l; i++) {\n    if (!f.call(/** @type {?} */ (opt_obj), values[i], keys && keys[i], col)) {\n      return false;\n    }\n  }\n  return true;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Datastructure: Hash Map.\n *\n *\n * This file contains an implementation of a Map structure. It implements a lot\n * of the methods used in goog.structs so those functions work on hashes. This\n * is best suited for complex key types. For simple keys such as numbers and\n * strings consider using the lighter-weight utilities in goog.object.\n */\n\n\ngoog.provide('goog.structs.Map');\n\ngoog.require('goog.iter.Iterator');\ngoog.require('goog.iter.StopIteration');\n\n\n\n/**\n * Class for Hash Map datastructure.\n * @param {*=} opt_map Map or Object to initialize the map with.\n * @param {...*} var_args If 2 or more arguments are present then they\n *     will be used as key-value pairs.\n * @constructor\n * @template K, V\n * @deprecated This type is misleading: use ES6 Map instead.\n */\ngoog.structs.Map = function(opt_map, var_args) {\n  'use strict';\n  /**\n   * Underlying JS object used to implement the map.\n   * @private {!Object}\n   */\n  this.map_ = {};\n\n  /**\n   * An array of keys. This is necessary for two reasons:\n   *   1. Iterating the keys using for (var key in this.map_) allocates an\n   *      object for every key in IE which is really bad for IE6 GC perf.\n   *   2. Without a side data structure, we would need to escape all the keys\n   *      as that would be the only way we could tell during iteration if the\n   *      key was an internal key or a property of the object.\n   *\n   * This array can contain deleted keys so it's necessary to check the map\n   * as well to see if the key is still in the map (this doesn't require a\n   * memory allocation in IE).\n   * @private {!Array<string>}\n   */\n  this.keys_ = [];\n\n  /**\n   * The number of key value pairs in the map.\n   * @private {number}\n   */\n  this.count_ = 0;\n\n  /**\n   * Version used to detect changes while iterating.\n   * @private {number}\n   */\n  this.version_ = 0;\n\n  var argLength = arguments.length;\n\n  if (argLength > 1) {\n    if (argLength % 2) {\n      throw new Error('Uneven number of arguments');\n    }\n    for (var i = 0; i < argLength; i += 2) {\n      this.set(arguments[i], arguments[i + 1]);\n    }\n  } else if (opt_map) {\n    this.addAll(/** @type {!Object} */ (opt_map));\n  }\n};\n\n\n/**\n * @return {number} The number of key-value pairs in the map.\n */\ngoog.structs.Map.prototype.getCount = function() {\n  'use strict';\n  return this.count_;\n};\n\n\n/**\n * Returns the values of the map.\n * @return {!Array<V>} The values in the map.\n */\ngoog.structs.Map.prototype.getValues = function() {\n  'use strict';\n  this.cleanupKeysArray_();\n\n  var rv = [];\n  for (var i = 0; i < this.keys_.length; i++) {\n    var key = this.keys_[i];\n    rv.push(this.map_[key]);\n  }\n  return rv;\n};\n\n\n/**\n * Returns the keys of the map.\n * @return {!Array<string>} Array of string values.\n */\ngoog.structs.Map.prototype.getKeys = function() {\n  'use strict';\n  this.cleanupKeysArray_();\n  return /** @type {!Array<string>} */ (this.keys_.concat());\n};\n\n\n/**\n * Whether the map contains the given key.\n * @param {*} key The key to check for.\n * @return {boolean} Whether the map contains the key.\n */\ngoog.structs.Map.prototype.containsKey = function(key) {\n  'use strict';\n  return goog.structs.Map.hasKey_(this.map_, key);\n};\n\n\n/**\n * Whether the map contains the given value. This is O(n).\n * @param {V} val The value to check for.\n * @return {boolean} Whether the map contains the value.\n */\ngoog.structs.Map.prototype.containsValue = function(val) {\n  'use strict';\n  for (var i = 0; i < this.keys_.length; i++) {\n    var key = this.keys_[i];\n    if (goog.structs.Map.hasKey_(this.map_, key) && this.map_[key] == val) {\n      return true;\n    }\n  }\n  return false;\n};\n\n\n/**\n * Whether this map is equal to the argument map.\n * @param {goog.structs.Map} otherMap The map against which to test equality.\n * @param {function(V, V): boolean=} opt_equalityFn Optional equality function\n *     to test equality of values. If not specified, this will test whether\n *     the values contained in each map are identical objects.\n * @return {boolean} Whether the maps are equal.\n */\ngoog.structs.Map.prototype.equals = function(otherMap, opt_equalityFn) {\n  'use strict';\n  if (this === otherMap) {\n    return true;\n  }\n\n  if (this.count_ != otherMap.getCount()) {\n    return false;\n  }\n\n  var equalityFn = opt_equalityFn || goog.structs.Map.defaultEquals;\n\n  this.cleanupKeysArray_();\n  for (var key, i = 0; key = this.keys_[i]; i++) {\n    if (!equalityFn(this.get(key), otherMap.get(key))) {\n      return false;\n    }\n  }\n\n  return true;\n};\n\n\n/**\n * Default equality test for values.\n * @param {*} a The first value.\n * @param {*} b The second value.\n * @return {boolean} Whether a and b reference the same object.\n */\ngoog.structs.Map.defaultEquals = function(a, b) {\n  'use strict';\n  return a === b;\n};\n\n\n/**\n * @return {boolean} Whether the map is empty.\n */\ngoog.structs.Map.prototype.isEmpty = function() {\n  'use strict';\n  return this.count_ == 0;\n};\n\n\n/**\n * Removes all key-value pairs from the map.\n */\ngoog.structs.Map.prototype.clear = function() {\n  'use strict';\n  this.map_ = {};\n  this.keys_.length = 0;\n  this.count_ = 0;\n  this.version_ = 0;\n};\n\n\n/**\n * Removes a key-value pair based on the key. This is O(logN) amortized due to\n * updating the keys array whenever the count becomes half the size of the keys\n * in the keys array.\n * @param {*} key  The key to remove.\n * @return {boolean} Whether object was removed.\n */\ngoog.structs.Map.prototype.remove = function(key) {\n  'use strict';\n  if (goog.structs.Map.hasKey_(this.map_, key)) {\n    delete this.map_[key];\n    this.count_--;\n    this.version_++;\n\n    // clean up the keys array if the threshold is hit\n    if (this.keys_.length > 2 * this.count_) {\n      this.cleanupKeysArray_();\n    }\n\n    return true;\n  }\n  return false;\n};\n\n\n/**\n * Cleans up the temp keys array by removing entries that are no longer in the\n * map.\n * @private\n */\ngoog.structs.Map.prototype.cleanupKeysArray_ = function() {\n  'use strict';\n  if (this.count_ != this.keys_.length) {\n    // First remove keys that are no longer in the map.\n    var srcIndex = 0;\n    var destIndex = 0;\n    while (srcIndex < this.keys_.length) {\n      var key = this.keys_[srcIndex];\n      if (goog.structs.Map.hasKey_(this.map_, key)) {\n        this.keys_[destIndex++] = key;\n      }\n      srcIndex++;\n    }\n    this.keys_.length = destIndex;\n  }\n\n  if (this.count_ != this.keys_.length) {\n    // If the count still isn't correct, that means we have duplicates. This can\n    // happen when the same key is added and removed multiple times. Now we have\n    // to allocate one extra Object to remove the duplicates. This could have\n    // been done in the first pass, but in the common case, we can avoid\n    // allocating an extra object by only doing this when necessary.\n    var seen = {};\n    var srcIndex = 0;\n    var destIndex = 0;\n    while (srcIndex < this.keys_.length) {\n      var key = this.keys_[srcIndex];\n      if (!(goog.structs.Map.hasKey_(seen, key))) {\n        this.keys_[destIndex++] = key;\n        seen[key] = 1;\n      }\n      srcIndex++;\n    }\n    this.keys_.length = destIndex;\n  }\n};\n\n\n/**\n * Returns the value for the given key.  If the key is not found and the default\n * value is not given this will return `undefined`.\n * @param {*} key The key to get the value for.\n * @param {DEFAULT=} opt_val The value to return if no item is found for the\n *     given key, defaults to undefined.\n * @return {V|DEFAULT} The value for the given key.\n * @template DEFAULT\n */\ngoog.structs.Map.prototype.get = function(key, opt_val) {\n  'use strict';\n  if (goog.structs.Map.hasKey_(this.map_, key)) {\n    return this.map_[key];\n  }\n  return opt_val;\n};\n\n\n/**\n * Adds a key-value pair to the map.\n * @param {*} key The key.\n * @param {V} value The value to add.\n * @return {*} Some subclasses return a value.\n */\ngoog.structs.Map.prototype.set = function(key, value) {\n  'use strict';\n  if (!(goog.structs.Map.hasKey_(this.map_, key))) {\n    this.count_++;\n    // TODO(johnlenz): This class lies, it claims to return an array of string\n    // keys, but instead returns the original object used.\n    this.keys_.push(/** @type {?} */ (key));\n    // Only change the version if we add a new key.\n    this.version_++;\n  }\n  this.map_[key] = value;\n};\n\n\n/**\n * Adds multiple key-value pairs from another goog.structs.Map or Object.\n * @param {?Object} map Object containing the data to add.\n */\ngoog.structs.Map.prototype.addAll = function(map) {\n  'use strict';\n  if (map instanceof goog.structs.Map) {\n    var keys = map.getKeys();\n    for (var i = 0; i < keys.length; i++) {\n      this.set(keys[i], map.get(keys[i]));\n    }\n  } else {\n    for (var key in map) {\n      this.set(key, map[key]);\n    }\n  }\n};\n\n\n/**\n * Calls the given function on each entry in the map.\n * @param {function(this:T, V, K, goog.structs.Map<K,V>)} f\n * @param {T=} opt_obj The value of \"this\" inside f.\n * @template T\n */\ngoog.structs.Map.prototype.forEach = function(f, opt_obj) {\n  'use strict';\n  var keys = this.getKeys();\n  for (var i = 0; i < keys.length; i++) {\n    var key = keys[i];\n    var value = this.get(key);\n    f.call(opt_obj, value, key, this);\n  }\n};\n\n\n/**\n * Clones a map and returns a new map.\n * @return {!goog.structs.Map} A new map with the same key-value pairs.\n */\ngoog.structs.Map.prototype.clone = function() {\n  'use strict';\n  return new goog.structs.Map(this);\n};\n\n\n/**\n * Returns a new map in which all the keys and values are interchanged\n * (keys become values and values become keys). If multiple keys map to the\n * same value, the chosen transposed value is implementation-dependent.\n *\n * It acts very similarly to {goog.object.transpose(Object)}.\n *\n * @return {!goog.structs.Map} The transposed map.\n */\ngoog.structs.Map.prototype.transpose = function() {\n  'use strict';\n  var transposed = new goog.structs.Map();\n  for (var i = 0; i < this.keys_.length; i++) {\n    var key = this.keys_[i];\n    var value = this.map_[key];\n    transposed.set(value, key);\n  }\n\n  return transposed;\n};\n\n\n/**\n * @return {!Object} Object representation of the map.\n */\ngoog.structs.Map.prototype.toObject = function() {\n  'use strict';\n  this.cleanupKeysArray_();\n  var obj = {};\n  for (var i = 0; i < this.keys_.length; i++) {\n    var key = this.keys_[i];\n    obj[key] = this.map_[key];\n  }\n  return obj;\n};\n\n\n/**\n * Returns an iterator that iterates over the keys in the map.  Removal of keys\n * while iterating might have undesired side effects.\n * @return {!goog.iter.Iterator} An iterator over the keys in the map.\n */\ngoog.structs.Map.prototype.getKeyIterator = function() {\n  'use strict';\n  return this.__iterator__(true);\n};\n\n\n/**\n * Returns an iterator that iterates over the values in the map.  Removal of\n * keys while iterating might have undesired side effects.\n * @return {!goog.iter.Iterator} An iterator over the values in the map.\n */\ngoog.structs.Map.prototype.getValueIterator = function() {\n  'use strict';\n  return this.__iterator__(false);\n};\n\n\n/**\n * Returns an iterator that iterates over the values or the keys in the map.\n * This throws an exception if the map was mutated since the iterator was\n * created.\n * @param {boolean=} opt_keys True to iterate over the keys. False to iterate\n *     over the values.  The default value is false.\n * @return {!goog.iter.Iterator} An iterator over the values or keys in the map.\n */\ngoog.structs.Map.prototype.__iterator__ = function(opt_keys) {\n  'use strict';\n  // Clean up keys to minimize the risk of iterating over dead keys.\n  this.cleanupKeysArray_();\n\n  var i = 0;\n  var version = this.version_;\n  var selfObj = this;\n\n  var newIter = new goog.iter.Iterator;\n  newIter.next = function() {\n    'use strict';\n    if (version != selfObj.version_) {\n      throw new Error('The map has changed since the iterator was created');\n    }\n    if (i >= selfObj.keys_.length) {\n      throw goog.iter.StopIteration;\n    }\n    var key = selfObj.keys_[i++];\n    return opt_keys ? key : selfObj.map_[key];\n  };\n  return newIter;\n};\n\n\n/**\n * Safe way to test for hasOwnProperty.  It even allows testing for\n * 'hasOwnProperty'.\n * @param {!Object} obj The object to test for presence of the given key.\n * @param {*} key The key to check for.\n * @return {boolean} Whether the object has the key.\n * @private\n */\ngoog.structs.Map.hasKey_ = function(obj, key) {\n  'use strict';\n  return Object.prototype.hasOwnProperty.call(obj, key);\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Simple utilities for dealing with URI strings.\n *\n * This package is deprecated in favour of the Closure URL package (goog.url)\n * when manipulating URIs for use by a browser. This package uses regular\n * expressions to parse a potential URI which can fall out of sync with how a\n * browser will actually interpret the URI. See\n * `goog.uri.utils.setUrlPackageSupportLoggingHandler` for one way to identify\n * URIs that should instead be parsed using the URL package.\n *\n * This is intended to be a lightweight alternative to constructing goog.Uri\n * objects.  Whereas goog.Uri adds several kilobytes to the binary regardless\n * of how much of its functionality you use, this is designed to be a set of\n * mostly-independent utilities so that the compiler includes only what is\n * necessary for the task.  Estimated savings of porting is 5k pre-gzip and\n * 1.5k post-gzip.  To ensure the savings remain, future developers should\n * avoid adding new functionality to existing functions, but instead create\n * new ones and factor out shared code.\n *\n * Many of these utilities have limited functionality, tailored to common\n * cases.  The query parameter utilities assume that the parameter keys are\n * already encoded, since most keys are compile-time alphanumeric strings.  The\n * query parameter mutation utilities also do not tolerate fragment identifiers.\n *\n * By design, these functions can be slower than goog.Uri equivalents.\n * Repeated calls to some of functions may be quadratic in behavior for IE,\n * although the effect is somewhat limited given the 2kb limit.\n *\n * One advantage of the limited functionality here is that this approach is\n * less sensitive to differences in URI encodings than goog.Uri, since these\n * functions operate on strings directly, rather than decoding them and\n * then re-encoding.\n *\n * Uses features of RFC 3986 for parsing/formatting URIs:\n *   http://www.ietf.org/rfc/rfc3986.txt\n */\n\ngoog.provide('goog.uri.utils');\ngoog.provide('goog.uri.utils.ComponentIndex');\ngoog.provide('goog.uri.utils.QueryArray');\ngoog.provide('goog.uri.utils.QueryValue');\ngoog.provide('goog.uri.utils.StandardQueryParam');\n\ngoog.require('goog.asserts');\ngoog.require('goog.string');\n\n\n/**\n * Character codes inlined to avoid object allocations due to charCode.\n * @enum {number}\n * @private\n */\ngoog.uri.utils.CharCode_ = {\n  AMPERSAND: 38,\n  EQUAL: 61,\n  HASH: 35,\n  QUESTION: 63\n};\n\n\n/**\n * Builds a URI string from already-encoded parts.\n *\n * No encoding is performed.  Any component may be omitted as either null or\n * undefined.\n *\n * @param {?string=} opt_scheme The scheme such as 'http'.\n * @param {?string=} opt_userInfo The user name before the '@'.\n * @param {?string=} opt_domain The domain such as 'www.google.com', already\n *     URI-encoded.\n * @param {(string|number|null)=} opt_port The port number.\n * @param {?string=} opt_path The path, already URI-encoded.  If it is not\n *     empty, it must begin with a slash.\n * @param {?string=} opt_queryData The URI-encoded query data.\n * @param {?string=} opt_fragment The URI-encoded fragment identifier.\n * @return {string} The fully combined URI.\n */\ngoog.uri.utils.buildFromEncodedParts = function(\n    opt_scheme, opt_userInfo, opt_domain, opt_port, opt_path, opt_queryData,\n    opt_fragment) {\n  'use strict';\n  var out = '';\n\n  if (opt_scheme) {\n    out += opt_scheme + ':';\n  }\n\n  if (opt_domain) {\n    out += '//';\n\n    if (opt_userInfo) {\n      out += opt_userInfo + '@';\n    }\n\n    out += opt_domain;\n\n    if (opt_port) {\n      out += ':' + opt_port;\n    }\n  }\n\n  if (opt_path) {\n    out += opt_path;\n  }\n\n  if (opt_queryData) {\n    out += '?' + opt_queryData;\n  }\n\n  if (opt_fragment) {\n    out += '#' + opt_fragment;\n  }\n\n  return out;\n};\n\n\n/**\n * A regular expression for breaking a URI into its component parts.\n *\n * {@link http://www.ietf.org/rfc/rfc3986.txt} says in Appendix B\n * As the \"first-match-wins\" algorithm is identical to the \"greedy\"\n * disambiguation method used by POSIX regular expressions, it is natural and\n * commonplace to use a regular expression for parsing the potential five\n * components of a URI reference.\n *\n * The following line is the regular expression for breaking-down a\n * well-formed URI reference into its components.\n *\n * <pre>\n * ^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\\?([^#]*))?(#(.*))?\n *  12            3  4          5       6  7        8 9\n * </pre>\n *\n * The numbers in the second line above are only to assist readability; they\n * indicate the reference points for each subexpression (i.e., each paired\n * parenthesis). We refer to the value matched for subexpression <n> as $<n>.\n * For example, matching the above expression to\n * <pre>\n *     http://www.ics.uci.edu/pub/ietf/uri/#Related\n * </pre>\n * results in the following subexpression matches:\n * <pre>\n *    $1 = http:\n *    $2 = http\n *    $3 = //www.ics.uci.edu\n *    $4 = www.ics.uci.edu\n *    $5 = /pub/ietf/uri/\n *    $6 = <undefined>\n *    $7 = <undefined>\n *    $8 = #Related\n *    $9 = Related\n * </pre>\n * where <undefined> indicates that the component is not present, as is the\n * case for the query component in the above example. Therefore, we can\n * determine the value of the five components as\n * <pre>\n *    scheme    = $2\n *    authority = $4\n *    path      = $5\n *    query     = $7\n *    fragment  = $9\n * </pre>\n *\n * The regular expression has been modified slightly to expose the\n * userInfo, domain, and port separately from the authority.\n * The modified version yields\n * <pre>\n *    $1 = http              scheme\n *    $2 = <undefined>       userInfo -\\\n *    $3 = www.ics.uci.edu   domain     | authority\n *    $4 = <undefined>       port     -/\n *    $5 = /pub/ietf/uri/    path\n *    $6 = <undefined>       query without ?\n *    $7 = Related           fragment without #\n * </pre>\n *\n * TODO(user): separate out the authority terminating characters once this\n * file is moved to ES6.\n * @type {!RegExp}\n * @private\n */\ngoog.uri.utils.splitRe_ = new RegExp(\n    '^' +  // Anchor against the entire string.\n    '(?:' +\n    '([^:/?#.]+)' +  // scheme - ignore special characters\n                     // used by other URL parts such as :,\n                     // ?, /, #, and .\n    ':)?' +\n    '(?://' +\n    '(?:([^\\\\\\\\/?#]*)@)?' +  // userInfo\n    '([^\\\\\\\\/?#]*?)' +       // domain\n    '(?::([0-9]+))?' +       // port\n    '(?=[\\\\\\\\/?#]|$)' +      // authority-terminating character.\n    ')?' +\n    '([^?#]+)?' +          // path\n    '(?:\\\\?([^#]*))?' +    // query\n    '(?:#([\\\\s\\\\S]*))?' +  // fragment. Can't use '.*' with 's' flag as Firefox\n                           // doesn't support the flag, and can't use an\n                           // \"everything set\" ([^]) as IE10 doesn't match any\n                           // characters with it.\n    '$');\n\n\n/**\n * The index of each URI component in the return value of goog.uri.utils.split.\n * @enum {number}\n */\ngoog.uri.utils.ComponentIndex = {\n  SCHEME: 1,\n  USER_INFO: 2,\n  DOMAIN: 3,\n  PORT: 4,\n  PATH: 5,\n  QUERY_DATA: 6,\n  FRAGMENT: 7\n};\n\n/**\n * @type {?function(string)}\n * @private\n */\ngoog.uri.utils.urlPackageSupportLoggingHandler_ = null;\n\n/**\n * @param {?function(string)} handler The handler function to call when a URI\n *     with a protocol that is better supported by the Closure URL package is\n *     detected.\n */\ngoog.uri.utils.setUrlPackageSupportLoggingHandler = function(handler) {\n  'use strict';\n  goog.uri.utils.urlPackageSupportLoggingHandler_ = handler;\n};\n\n/**\n * Splits a URI into its component parts.\n *\n * Each component can be accessed via the component indices; for example:\n * <pre>\n * goog.uri.utils.split(someStr)[goog.uri.utils.ComponentIndex.QUERY_DATA];\n * </pre>\n *\n * @param {string} uri The URI string to examine.\n * @return {!Array<string|undefined>} Each component still URI-encoded.\n *     Each component that is present will contain the encoded value, whereas\n *     components that are not present will be undefined or empty, depending\n *     on the browser's regular expression implementation.  Never null, since\n *     arbitrary strings may still look like path names.\n */\ngoog.uri.utils.split = function(uri) {\n  'use strict';\n  // See @return comment -- never null.\n  var result = /** @type {!Array<string|undefined>} */ (\n      uri.match(goog.uri.utils.splitRe_));\n  if (goog.uri.utils.urlPackageSupportLoggingHandler_ &&\n      ['http', 'https', 'ws', 'wss',\n       'ftp'].indexOf(result[goog.uri.utils.ComponentIndex.SCHEME]) >= 0) {\n    goog.uri.utils.urlPackageSupportLoggingHandler_(uri);\n  }\n  return result;\n};\n\n\n/**\n * @param {?string} uri A possibly null string.\n * @param {boolean=} opt_preserveReserved If true, percent-encoding of RFC-3986\n *     reserved characters will not be removed.\n * @return {?string} The string URI-decoded, or null if uri is null.\n * @private\n */\ngoog.uri.utils.decodeIfPossible_ = function(uri, opt_preserveReserved) {\n  'use strict';\n  if (!uri) {\n    return uri;\n  }\n\n  return opt_preserveReserved ? decodeURI(uri) : decodeURIComponent(uri);\n};\n\n\n/**\n * Gets a URI component by index.\n *\n * It is preferred to use the getPathEncoded() variety of functions ahead,\n * since they are more readable.\n *\n * @param {goog.uri.utils.ComponentIndex} componentIndex The component index.\n * @param {string} uri The URI to examine.\n * @return {?string} The still-encoded component, or null if the component\n *     is not present.\n * @private\n */\ngoog.uri.utils.getComponentByIndex_ = function(componentIndex, uri) {\n  'use strict';\n  // Convert undefined, null, and empty string into null.\n  return goog.uri.utils.split(uri)[componentIndex] || null;\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The protocol or scheme, or null if none.  Does not\n *     include trailing colons or slashes.\n */\ngoog.uri.utils.getScheme = function(uri) {\n  'use strict';\n  return goog.uri.utils.getComponentByIndex_(\n      goog.uri.utils.ComponentIndex.SCHEME, uri);\n};\n\n\n/**\n * Gets the effective scheme for the URL.  If the URL is relative then the\n * scheme is derived from the page's location.\n * @param {string} uri The URI to examine.\n * @return {string} The protocol or scheme, always lower case.\n */\ngoog.uri.utils.getEffectiveScheme = function(uri) {\n  'use strict';\n  var scheme = goog.uri.utils.getScheme(uri);\n  if (!scheme && goog.global.self && goog.global.self.location) {\n    var protocol = goog.global.self.location.protocol;\n    scheme = protocol.substr(0, protocol.length - 1);\n  }\n  // NOTE: When called from a web worker in Firefox 3.5, location may be null.\n  // All other browsers with web workers support self.location from the worker.\n  return scheme ? scheme.toLowerCase() : '';\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The user name still encoded, or null if none.\n */\ngoog.uri.utils.getUserInfoEncoded = function(uri) {\n  'use strict';\n  return goog.uri.utils.getComponentByIndex_(\n      goog.uri.utils.ComponentIndex.USER_INFO, uri);\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The decoded user info, or null if none.\n */\ngoog.uri.utils.getUserInfo = function(uri) {\n  'use strict';\n  return goog.uri.utils.decodeIfPossible_(\n      goog.uri.utils.getUserInfoEncoded(uri));\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The domain name still encoded, or null if none.\n */\ngoog.uri.utils.getDomainEncoded = function(uri) {\n  'use strict';\n  return goog.uri.utils.getComponentByIndex_(\n      goog.uri.utils.ComponentIndex.DOMAIN, uri);\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The decoded domain, or null if none.\n */\ngoog.uri.utils.getDomain = function(uri) {\n  'use strict';\n  return goog.uri.utils.decodeIfPossible_(\n      goog.uri.utils.getDomainEncoded(uri), true /* opt_preserveReserved */);\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?number} The port number, or null if none.\n */\ngoog.uri.utils.getPort = function(uri) {\n  'use strict';\n  // Coerce to a number.  If the result of getComponentByIndex_ is null or\n  // non-numeric, the number coersion yields NaN.  This will then return\n  // null for all non-numeric cases (though also zero, which isn't a relevant\n  // port number).\n  return Number(\n             goog.uri.utils.getComponentByIndex_(\n                 goog.uri.utils.ComponentIndex.PORT, uri)) ||\n      null;\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The path still encoded, or null if none. Includes the\n *     leading slash, if any.\n */\ngoog.uri.utils.getPathEncoded = function(uri) {\n  'use strict';\n  return goog.uri.utils.getComponentByIndex_(\n      goog.uri.utils.ComponentIndex.PATH, uri);\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The decoded path, or null if none.  Includes the leading\n *     slash, if any.\n */\ngoog.uri.utils.getPath = function(uri) {\n  'use strict';\n  return goog.uri.utils.decodeIfPossible_(\n      goog.uri.utils.getPathEncoded(uri), true /* opt_preserveReserved */);\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The query data still encoded, or null if none.  Does not\n *     include the question mark itself.\n */\ngoog.uri.utils.getQueryData = function(uri) {\n  'use strict';\n  return goog.uri.utils.getComponentByIndex_(\n      goog.uri.utils.ComponentIndex.QUERY_DATA, uri);\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The fragment identifier, or null if none.  Does not\n *     include the hash mark itself.\n */\ngoog.uri.utils.getFragmentEncoded = function(uri) {\n  'use strict';\n  // The hash mark may not appear in any other part of the URL.\n  var hashIndex = uri.indexOf('#');\n  return hashIndex < 0 ? null : uri.substr(hashIndex + 1);\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @param {?string} fragment The encoded fragment identifier, or null if none.\n *     Does not include the hash mark itself.\n * @return {string} The URI with the fragment set.\n */\ngoog.uri.utils.setFragmentEncoded = function(uri, fragment) {\n  'use strict';\n  return goog.uri.utils.removeFragment(uri) + (fragment ? '#' + fragment : '');\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The decoded fragment identifier, or null if none.  Does\n *     not include the hash mark.\n */\ngoog.uri.utils.getFragment = function(uri) {\n  'use strict';\n  return goog.uri.utils.decodeIfPossible_(\n      goog.uri.utils.getFragmentEncoded(uri));\n};\n\n\n/**\n * Extracts everything up to the port of the URI.\n * @param {string} uri The URI string.\n * @return {string} Everything up to and including the port.\n */\ngoog.uri.utils.getHost = function(uri) {\n  'use strict';\n  var pieces = goog.uri.utils.split(uri);\n  return goog.uri.utils.buildFromEncodedParts(\n      pieces[goog.uri.utils.ComponentIndex.SCHEME],\n      pieces[goog.uri.utils.ComponentIndex.USER_INFO],\n      pieces[goog.uri.utils.ComponentIndex.DOMAIN],\n      pieces[goog.uri.utils.ComponentIndex.PORT]);\n};\n\n\n/**\n * Returns the origin for a given URL.\n * @param {string} uri The URI string.\n * @return {string} Everything up to and including the port.\n */\ngoog.uri.utils.getOrigin = function(uri) {\n  'use strict';\n  var pieces = goog.uri.utils.split(uri);\n  return goog.uri.utils.buildFromEncodedParts(\n      pieces[goog.uri.utils.ComponentIndex.SCHEME], null /* opt_userInfo */,\n      pieces[goog.uri.utils.ComponentIndex.DOMAIN],\n      pieces[goog.uri.utils.ComponentIndex.PORT]);\n};\n\n\n/**\n * Extracts the path of the URL and everything after.\n * @param {string} uri The URI string.\n * @return {string} The URI, starting at the path and including the query\n *     parameters and fragment identifier.\n */\ngoog.uri.utils.getPathAndAfter = function(uri) {\n  'use strict';\n  var pieces = goog.uri.utils.split(uri);\n  return goog.uri.utils.buildFromEncodedParts(\n      null, null, null, null, pieces[goog.uri.utils.ComponentIndex.PATH],\n      pieces[goog.uri.utils.ComponentIndex.QUERY_DATA],\n      pieces[goog.uri.utils.ComponentIndex.FRAGMENT]);\n};\n\n\n/**\n * Gets the URI with the fragment identifier removed.\n * @param {string} uri The URI to examine.\n * @return {string} Everything preceding the hash mark.\n */\ngoog.uri.utils.removeFragment = function(uri) {\n  'use strict';\n  // The hash mark may not appear in any other part of the URL.\n  var hashIndex = uri.indexOf('#');\n  return hashIndex < 0 ? uri : uri.substr(0, hashIndex);\n};\n\n\n/**\n * Ensures that two URI's have the exact same domain, scheme, and port.\n *\n * Unlike the version in goog.Uri, this checks protocol, and therefore is\n * suitable for checking against the browser's same-origin policy.\n *\n * @param {string} uri1 The first URI.\n * @param {string} uri2 The second URI.\n * @return {boolean} Whether they have the same scheme, domain and port.\n */\ngoog.uri.utils.haveSameDomain = function(uri1, uri2) {\n  'use strict';\n  var pieces1 = goog.uri.utils.split(uri1);\n  var pieces2 = goog.uri.utils.split(uri2);\n  return pieces1[goog.uri.utils.ComponentIndex.DOMAIN] ==\n      pieces2[goog.uri.utils.ComponentIndex.DOMAIN] &&\n      pieces1[goog.uri.utils.ComponentIndex.SCHEME] ==\n      pieces2[goog.uri.utils.ComponentIndex.SCHEME] &&\n      pieces1[goog.uri.utils.ComponentIndex.PORT] ==\n      pieces2[goog.uri.utils.ComponentIndex.PORT];\n};\n\n\n/**\n * Asserts that there are no fragment or query identifiers, only in uncompiled\n * mode.\n * @param {string} uri The URI to examine.\n * @private\n */\ngoog.uri.utils.assertNoFragmentsOrQueries_ = function(uri) {\n  'use strict';\n  goog.asserts.assert(\n      uri.indexOf('#') < 0 && uri.indexOf('?') < 0,\n      'goog.uri.utils: Fragment or query identifiers are not supported: [%s]',\n      uri);\n};\n\n\n/**\n * Supported query parameter values by the parameter serializing utilities.\n *\n * If a value is null or undefined, the key-value pair is skipped, as an easy\n * way to omit parameters conditionally.  Non-array parameters are converted\n * to a string and URI encoded.  Array values are expanded into multiple\n * &key=value pairs, with each element stringized and URI-encoded.\n *\n * @typedef {*}\n */\ngoog.uri.utils.QueryValue;\n\n\n/**\n * An array representing a set of query parameters with alternating keys\n * and values.\n *\n * Keys are assumed to be URI encoded already and live at even indices.  See\n * goog.uri.utils.QueryValue for details on how parameter values are encoded.\n *\n * Example:\n * <pre>\n * var data = [\n *   // Simple param: ?name=BobBarker\n *   'name', 'BobBarker',\n *   // Conditional param -- may be omitted entirely.\n *   'specialDietaryNeeds', hasDietaryNeeds() ? getDietaryNeeds() : null,\n *   // Multi-valued param: &house=LosAngeles&house=NewYork&house=null\n *   'house', ['LosAngeles', 'NewYork', null]\n * ];\n * </pre>\n *\n * @typedef {!Array<string|goog.uri.utils.QueryValue>}\n */\ngoog.uri.utils.QueryArray;\n\n\n/**\n * Parses encoded query parameters and calls callback function for every\n * parameter found in the string.\n *\n * Missing value of parameter (e.g. “…&key&…”) is treated as if the value was an\n * empty string.  Keys may be empty strings (e.g. “…&=value&…”) which also means\n * that “…&=&…” and “…&&…” will result in an empty key and value.\n *\n * @param {string} encodedQuery Encoded query string excluding question mark at\n *     the beginning.\n * @param {function(string, string)} callback Function called for every\n *     parameter found in query string.  The first argument (name) will not be\n *     urldecoded (so the function is consistent with buildQueryData), but the\n *     second will.  If the parameter has no value (i.e. “=” was not present)\n *     the second argument (value) will be an empty string.\n */\ngoog.uri.utils.parseQueryData = function(encodedQuery, callback) {\n  'use strict';\n  if (!encodedQuery) {\n    return;\n  }\n  var pairs = encodedQuery.split('&');\n  for (var i = 0; i < pairs.length; i++) {\n    var indexOfEquals = pairs[i].indexOf('=');\n    var name = null;\n    var value = null;\n    if (indexOfEquals >= 0) {\n      name = pairs[i].substring(0, indexOfEquals);\n      value = pairs[i].substring(indexOfEquals + 1);\n    } else {\n      name = pairs[i];\n    }\n    callback(name, value ? goog.string.urlDecode(value) : '');\n  }\n};\n\n\n/**\n * Split the URI into 3 parts where the [1] is the queryData without a leading\n * '?'. For example, the URI http://foo.com/bar?a=b#abc returns\n * ['http://foo.com/bar','a=b','#abc'].\n * @param {string} uri The URI to parse.\n * @return {!Array<string>} An array representation of uri of length 3 where the\n *     middle value is the queryData without a leading '?'.\n * @private\n */\ngoog.uri.utils.splitQueryData_ = function(uri) {\n  'use strict';\n  // Find the query data and hash.\n  var hashIndex = uri.indexOf('#');\n  if (hashIndex < 0) {\n    hashIndex = uri.length;\n  }\n  var questionIndex = uri.indexOf('?');\n  var queryData;\n  if (questionIndex < 0 || questionIndex > hashIndex) {\n    questionIndex = hashIndex;\n    queryData = '';\n  } else {\n    queryData = uri.substring(questionIndex + 1, hashIndex);\n  }\n  return [uri.substr(0, questionIndex), queryData, uri.substr(hashIndex)];\n};\n\n\n/**\n * Join an array created by splitQueryData_ back into a URI.\n * @param {!Array<string>} parts A URI in the form generated by splitQueryData_.\n * @return {string} The joined URI.\n * @private\n */\ngoog.uri.utils.joinQueryData_ = function(parts) {\n  'use strict';\n  return parts[0] + (parts[1] ? '?' + parts[1] : '') + parts[2];\n};\n\n\n/**\n * @param {string} queryData\n * @param {string} newData\n * @return {string}\n * @private\n */\ngoog.uri.utils.appendQueryData_ = function(queryData, newData) {\n  'use strict';\n  if (!newData) {\n    return queryData;\n  }\n  return queryData ? queryData + '&' + newData : newData;\n};\n\n\n/**\n * @param {string} uri\n * @param {string} queryData\n * @return {string}\n * @private\n */\ngoog.uri.utils.appendQueryDataToUri_ = function(uri, queryData) {\n  'use strict';\n  if (!queryData) {\n    return uri;\n  }\n  var parts = goog.uri.utils.splitQueryData_(uri);\n  parts[1] = goog.uri.utils.appendQueryData_(parts[1], queryData);\n  return goog.uri.utils.joinQueryData_(parts);\n};\n\n\n/**\n * Appends key=value pairs to an array, supporting multi-valued objects.\n * @param {*} key The key prefix.\n * @param {goog.uri.utils.QueryValue} value The value to serialize.\n * @param {!Array<string>} pairs The array to which the 'key=value' strings\n *     should be appended.\n * @private\n */\ngoog.uri.utils.appendKeyValuePairs_ = function(key, value, pairs) {\n  'use strict';\n  goog.asserts.assertString(key);\n  if (Array.isArray(value)) {\n    // Convince the compiler it's an array.\n    goog.asserts.assertArray(value);\n    for (var j = 0; j < value.length; j++) {\n      // Convert to string explicitly, to short circuit the null and array\n      // logic in this function -- this ensures that null and undefined get\n      // written as literal 'null' and 'undefined', and arrays don't get\n      // expanded out but instead encoded in the default way.\n      goog.uri.utils.appendKeyValuePairs_(key, String(value[j]), pairs);\n    }\n  } else if (value != null) {\n    // Skip a top-level null or undefined entirely.\n    pairs.push(\n        key +\n        // Check for empty string. Zero gets encoded into the url as literal\n        // strings.  For empty string, skip the equal sign, to be consistent\n        // with UriBuilder.java.\n        (value === '' ? '' : '=' + goog.string.urlEncode(value)));\n  }\n};\n\n\n/**\n * Builds a query data string from a sequence of alternating keys and values.\n * Currently generates \"&key&\" for empty args.\n *\n * @param {!IArrayLike<string|goog.uri.utils.QueryValue>} keysAndValues\n *     Alternating keys and values. See the QueryArray typedef.\n * @param {number=} opt_startIndex A start offset into the arary, defaults to 0.\n * @return {string} The encoded query string, in the form 'a=1&b=2'.\n */\ngoog.uri.utils.buildQueryData = function(keysAndValues, opt_startIndex) {\n  'use strict';\n  goog.asserts.assert(\n      Math.max(keysAndValues.length - (opt_startIndex || 0), 0) % 2 == 0,\n      'goog.uri.utils: Key/value lists must be even in length.');\n\n  var params = [];\n  for (var i = opt_startIndex || 0; i < keysAndValues.length; i += 2) {\n    var key = /** @type {string} */ (keysAndValues[i]);\n    goog.uri.utils.appendKeyValuePairs_(key, keysAndValues[i + 1], params);\n  }\n  return params.join('&');\n};\n\n\n/**\n * Builds a query data string from a map.\n * Currently generates \"&key&\" for empty args.\n *\n * @param {!Object<string, goog.uri.utils.QueryValue>} map An object where keys\n *     are URI-encoded parameter keys, and the values are arbitrary types\n *     or arrays. Keys with a null value are dropped.\n * @return {string} The encoded query string, in the form 'a=1&b=2'.\n */\ngoog.uri.utils.buildQueryDataFromMap = function(map) {\n  'use strict';\n  var params = [];\n  for (var key in map) {\n    goog.uri.utils.appendKeyValuePairs_(key, map[key], params);\n  }\n  return params.join('&');\n};\n\n\n/**\n * Appends URI parameters to an existing URI.\n *\n * The variable arguments may contain alternating keys and values.  Keys are\n * assumed to be already URI encoded.  The values should not be URI-encoded,\n * and will instead be encoded by this function.\n * <pre>\n * appendParams('http://www.foo.com?existing=true',\n *     'key1', 'value1',\n *     'key2', 'value?willBeEncoded',\n *     'key3', ['valueA', 'valueB', 'valueC'],\n *     'key4', null);\n * result: 'http://www.foo.com?existing=true&' +\n *     'key1=value1&' +\n *     'key2=value%3FwillBeEncoded&' +\n *     'key3=valueA&key3=valueB&key3=valueC'\n * </pre>\n *\n * A single call to this function will not exhibit quadratic behavior in IE,\n * whereas multiple repeated calls may, although the effect is limited by\n * fact that URL's generally can't exceed 2kb.\n *\n * @param {string} uri The original URI, which may already have query data.\n * @param {...(goog.uri.utils.QueryArray|goog.uri.utils.QueryValue)}\n * var_args\n *     An array or argument list conforming to goog.uri.utils.QueryArray.\n * @return {string} The URI with all query parameters added.\n */\ngoog.uri.utils.appendParams = function(uri, var_args) {\n  'use strict';\n  var queryData = arguments.length == 2 ?\n      goog.uri.utils.buildQueryData(arguments[1], 0) :\n      goog.uri.utils.buildQueryData(arguments, 1);\n  return goog.uri.utils.appendQueryDataToUri_(uri, queryData);\n};\n\n\n/**\n * Appends query parameters from a map.\n *\n * @param {string} uri The original URI, which may already have query data.\n * @param {!Object<goog.uri.utils.QueryValue>} map An object where keys are\n *     URI-encoded parameter keys, and the values are arbitrary types or arrays.\n *     Keys with a null value are dropped.\n * @return {string} The new parameters.\n */\ngoog.uri.utils.appendParamsFromMap = function(uri, map) {\n  'use strict';\n  var queryData = goog.uri.utils.buildQueryDataFromMap(map);\n  return goog.uri.utils.appendQueryDataToUri_(uri, queryData);\n};\n\n\n/**\n * Appends a single URI parameter.\n *\n * Repeated calls to this can exhibit quadratic behavior in IE6 due to the\n * way string append works, though it should be limited given the 2kb limit.\n *\n * @param {string} uri The original URI, which may already have query data.\n * @param {string} key The key, which must already be URI encoded.\n * @param {*=} opt_value The value, which will be stringized and encoded\n *     (assumed not already to be encoded).  If omitted, undefined, or null, the\n *     key will be added as a valueless parameter.\n * @return {string} The URI with the query parameter added.\n */\ngoog.uri.utils.appendParam = function(uri, key, opt_value) {\n  'use strict';\n  var value = (opt_value != null) ? '=' + goog.string.urlEncode(opt_value) : '';\n  return goog.uri.utils.appendQueryDataToUri_(uri, key + value);\n};\n\n\n/**\n * Finds the next instance of a query parameter with the specified name.\n *\n * Does not instantiate any objects.\n *\n * @param {string} uri The URI to search.  May contain a fragment identifier\n *     if opt_hashIndex is specified.\n * @param {number} startIndex The index to begin searching for the key at.  A\n *     match may be found even if this is one character after the ampersand.\n * @param {string} keyEncoded The URI-encoded key.\n * @param {number} hashOrEndIndex Index to stop looking at.  If a hash\n *     mark is present, it should be its index, otherwise it should be the\n *     length of the string.\n * @return {number} The position of the first character in the key's name,\n *     immediately after either a question mark or a dot.\n * @private\n */\ngoog.uri.utils.findParam_ = function(\n    uri, startIndex, keyEncoded, hashOrEndIndex) {\n  'use strict';\n  var index = startIndex;\n  var keyLength = keyEncoded.length;\n\n  // Search for the key itself and post-filter for surronuding punctuation,\n  // rather than expensively building a regexp.\n  while ((index = uri.indexOf(keyEncoded, index)) >= 0 &&\n         index < hashOrEndIndex) {\n    var precedingChar = uri.charCodeAt(index - 1);\n    // Ensure that the preceding character is '&' or '?'.\n    if (precedingChar == goog.uri.utils.CharCode_.AMPERSAND ||\n        precedingChar == goog.uri.utils.CharCode_.QUESTION) {\n      // Ensure the following character is '&', '=', '#', or NaN\n      // (end of string).\n      var followingChar = uri.charCodeAt(index + keyLength);\n      if (!followingChar || followingChar == goog.uri.utils.CharCode_.EQUAL ||\n          followingChar == goog.uri.utils.CharCode_.AMPERSAND ||\n          followingChar == goog.uri.utils.CharCode_.HASH) {\n        return index;\n      }\n    }\n    index += keyLength + 1;\n  }\n\n  return -1;\n};\n\n\n/**\n * Regular expression for finding a hash mark or end of string.\n * @type {RegExp}\n * @private\n */\ngoog.uri.utils.hashOrEndRe_ = /#|$/;\n\n\n/**\n * Determines if the URI contains a specific key.\n *\n * Performs no object instantiations.\n *\n * @param {string} uri The URI to process.  May contain a fragment\n *     identifier.\n * @param {string} keyEncoded The URI-encoded key.  Case-sensitive.\n * @return {boolean} Whether the key is present.\n */\ngoog.uri.utils.hasParam = function(uri, keyEncoded) {\n  'use strict';\n  return goog.uri.utils.findParam_(\n             uri, 0, keyEncoded, uri.search(goog.uri.utils.hashOrEndRe_)) >= 0;\n};\n\n\n/**\n * Gets the first value of a query parameter.\n * @param {string} uri The URI to process.  May contain a fragment.\n * @param {string} keyEncoded The URI-encoded key.  Case-sensitive.\n * @return {?string} The first value of the parameter (URI-decoded), or null\n *     if the parameter is not found.\n */\ngoog.uri.utils.getParamValue = function(uri, keyEncoded) {\n  'use strict';\n  var hashOrEndIndex = uri.search(goog.uri.utils.hashOrEndRe_);\n  var foundIndex =\n      goog.uri.utils.findParam_(uri, 0, keyEncoded, hashOrEndIndex);\n\n  if (foundIndex < 0) {\n    return null;\n  } else {\n    var endPosition = uri.indexOf('&', foundIndex);\n    if (endPosition < 0 || endPosition > hashOrEndIndex) {\n      endPosition = hashOrEndIndex;\n    }\n    // Progress forth to the end of the \"key=\" or \"key&\" substring.\n    foundIndex += keyEncoded.length + 1;\n    // Use substr, because it (unlike substring) will return empty string\n    // if foundIndex > endPosition.\n    return goog.string.urlDecode(\n        uri.substr(foundIndex, endPosition - foundIndex));\n  }\n};\n\n\n/**\n * Gets all values of a query parameter.\n * @param {string} uri The URI to process.  May contain a fragment.\n * @param {string} keyEncoded The URI-encoded key.  Case-sensitive.\n * @return {!Array<string>} All URI-decoded values with the given key.\n *     If the key is not found, this will have length 0, but never be null.\n */\ngoog.uri.utils.getParamValues = function(uri, keyEncoded) {\n  'use strict';\n  var hashOrEndIndex = uri.search(goog.uri.utils.hashOrEndRe_);\n  var position = 0;\n  var foundIndex;\n  var result = [];\n\n  while ((foundIndex = goog.uri.utils.findParam_(\n              uri, position, keyEncoded, hashOrEndIndex)) >= 0) {\n    // Find where this parameter ends, either the '&' or the end of the\n    // query parameters.\n    position = uri.indexOf('&', foundIndex);\n    if (position < 0 || position > hashOrEndIndex) {\n      position = hashOrEndIndex;\n    }\n\n    // Progress forth to the end of the \"key=\" or \"key&\" substring.\n    foundIndex += keyEncoded.length + 1;\n    // Use substr, because it (unlike substring) will return empty string\n    // if foundIndex > position.\n    result.push(\n        goog.string.urlDecode(uri.substr(foundIndex, position - foundIndex)));\n  }\n\n  return result;\n};\n\n\n/**\n * Regexp to find trailing question marks and ampersands.\n * @type {RegExp}\n * @private\n */\ngoog.uri.utils.trailingQueryPunctuationRe_ = /[?&]($|#)/;\n\n\n/**\n * Removes all instances of a query parameter.\n * @param {string} uri The URI to process.  Must not contain a fragment.\n * @param {string} keyEncoded The URI-encoded key.\n * @return {string} The URI with all instances of the parameter removed.\n */\ngoog.uri.utils.removeParam = function(uri, keyEncoded) {\n  'use strict';\n  var hashOrEndIndex = uri.search(goog.uri.utils.hashOrEndRe_);\n  var position = 0;\n  var foundIndex;\n  var buffer = [];\n\n  // Look for a query parameter.\n  while ((foundIndex = goog.uri.utils.findParam_(\n              uri, position, keyEncoded, hashOrEndIndex)) >= 0) {\n    // Get the portion of the query string up to, but not including, the ?\n    // or & starting the parameter.\n    buffer.push(uri.substring(position, foundIndex));\n    // Progress to immediately after the '&'.  If not found, go to the end.\n    // Avoid including the hash mark.\n    position = Math.min(\n        (uri.indexOf('&', foundIndex) + 1) || hashOrEndIndex, hashOrEndIndex);\n  }\n\n  // Append everything that is remaining.\n  buffer.push(uri.substr(position));\n\n  // Join the buffer, and remove trailing punctuation that remains.\n  return buffer.join('').replace(\n      goog.uri.utils.trailingQueryPunctuationRe_, '$1');\n};\n\n\n/**\n * Replaces all existing definitions of a parameter with a single definition.\n *\n * Repeated calls to this can exhibit quadratic behavior due to the need to\n * find existing instances and reconstruct the string, though it should be\n * limited given the 2kb limit.  Consider using appendParams or setParamsFromMap\n * to update multiple parameters in bulk.\n *\n * @param {string} uri The original URI, which may already have query data.\n * @param {string} keyEncoded The key, which must already be URI encoded.\n * @param {*} value The value, which will be stringized and encoded (assumed\n *     not already to be encoded).\n * @return {string} The URI with the query parameter added.\n */\ngoog.uri.utils.setParam = function(uri, keyEncoded, value) {\n  'use strict';\n  return goog.uri.utils.appendParam(\n      goog.uri.utils.removeParam(uri, keyEncoded), keyEncoded, value);\n};\n\n\n/**\n * Effeciently set or remove multiple query parameters in a URI. Order of\n * unchanged parameters will not be modified, all updated parameters will be\n * appended to the end of the query. Params with values of null or undefined are\n * removed.\n *\n * @param {string} uri The URI to process.\n * @param {!Object<string, goog.uri.utils.QueryValue>} params A list of\n *     parameters to update. If null or undefined, the param will be removed.\n * @return {string} An updated URI where the query data has been updated with\n *     the params.\n */\ngoog.uri.utils.setParamsFromMap = function(uri, params) {\n  'use strict';\n  var parts = goog.uri.utils.splitQueryData_(uri);\n  var queryData = parts[1];\n  var buffer = [];\n  if (queryData) {\n    queryData.split('&').forEach(function(pair) {\n      'use strict';\n      var indexOfEquals = pair.indexOf('=');\n      var name = indexOfEquals >= 0 ? pair.substr(0, indexOfEquals) : pair;\n      if (!params.hasOwnProperty(name)) {\n        buffer.push(pair);\n      }\n    });\n  }\n  parts[1] = goog.uri.utils.appendQueryData_(\n      buffer.join('&'), goog.uri.utils.buildQueryDataFromMap(params));\n  return goog.uri.utils.joinQueryData_(parts);\n};\n\n\n/**\n * Generates a URI path using a given URI and a path with checks to\n * prevent consecutive \"//\". The baseUri passed in must not contain\n * query or fragment identifiers. The path to append may not contain query or\n * fragment identifiers.\n *\n * @param {string} baseUri URI to use as the base.\n * @param {string} path Path to append.\n * @return {string} Updated URI.\n */\ngoog.uri.utils.appendPath = function(baseUri, path) {\n  'use strict';\n  goog.uri.utils.assertNoFragmentsOrQueries_(baseUri);\n\n  // Remove any trailing '/'\n  if (goog.string.endsWith(baseUri, '/')) {\n    baseUri = baseUri.substr(0, baseUri.length - 1);\n  }\n  // Remove any leading '/'\n  if (goog.string.startsWith(path, '/')) {\n    path = path.substr(1);\n  }\n  return '' + baseUri + '/' + path;\n};\n\n\n/**\n * Replaces the path.\n * @param {string} uri URI to use as the base.\n * @param {string} path New path.\n * @return {string} Updated URI.\n */\ngoog.uri.utils.setPath = function(uri, path) {\n  'use strict';\n  // Add any missing '/'.\n  if (!goog.string.startsWith(path, '/')) {\n    path = '/' + path;\n  }\n  var parts = goog.uri.utils.split(uri);\n  return goog.uri.utils.buildFromEncodedParts(\n      parts[goog.uri.utils.ComponentIndex.SCHEME],\n      parts[goog.uri.utils.ComponentIndex.USER_INFO],\n      parts[goog.uri.utils.ComponentIndex.DOMAIN],\n      parts[goog.uri.utils.ComponentIndex.PORT], path,\n      parts[goog.uri.utils.ComponentIndex.QUERY_DATA],\n      parts[goog.uri.utils.ComponentIndex.FRAGMENT]);\n};\n\n\n/**\n * Standard supported query parameters.\n * @enum {string}\n */\ngoog.uri.utils.StandardQueryParam = {\n\n  /** Unused parameter for unique-ifying. */\n  RANDOM: 'zx'\n};\n\n\n/**\n * Sets the zx parameter of a URI to a random value.\n * @param {string} uri Any URI.\n * @return {string} That URI with the \"zx\" parameter added or replaced to\n *     contain a random string.\n */\ngoog.uri.utils.makeUnique = function(uri) {\n  'use strict';\n  return goog.uri.utils.setParam(\n      uri, goog.uri.utils.StandardQueryParam.RANDOM,\n      goog.string.getRandomString());\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Interface and shared data structures for implementing\n * different wire protocol versions.\n */\ngoog.provide('goog.labs.net.webChannel.Wire');\ngoog.provide('goog.labs.net.webChannel.Wire.QueuedMap');\n\ngoog.requireType('goog.structs.Map');\n\n\n\n/**\n * The interface class.\n * @interface\n */\ngoog.labs.net.webChannel.Wire = class {\n  constructor() {}\n};\n\n\n/**\n * The latest protocol version that this class supports. We request this version\n * from the server when opening the connection. Should match\n * LATEST_CHANNEL_VERSION on the server code.\n * @type {number}\n */\ngoog.labs.net.webChannel.Wire.LATEST_CHANNEL_VERSION = 8;\n\n\n/**\n * The JSON field key for the raw data wrapper object.\n * @type {string}\n */\ngoog.labs.net.webChannel.Wire.RAW_DATA_KEY = '__data__';\n\n\n\n/**\n * Simple container class for a (mapId, map) pair.\n */\ngoog.labs.net.webChannel.Wire.QueuedMap = class {\n  /**\n   * @param {number} mapId The id for this map.\n   * @param {!Object|!goog.structs.Map} map The map itself.\n   * @param {!Object=} opt_context The context associated with the map.\n   */\n  constructor(mapId, map, opt_context) {\n    'use strict';\n    /**\n     * The id for this map.\n     * @type {number}\n     */\n    this.mapId = mapId;\n\n    /**\n     * The map itself.\n     * @type {!Object|!goog.structs.Map}\n     */\n    this.map = map;\n\n    /**\n     * The context for the map.\n     * @type {Object}\n     */\n    this.context = opt_context || null;\n  }\n\n  /**\n   * @return {number|undefined} the size of the raw JSON message or\n   * undefined if the message is not encoded as a raw JSON message\n   */\n  getRawDataSize() {\n    'use strict';\n    if (goog.labs.net.webChannel.Wire.RAW_DATA_KEY in this.map) {\n      const data = this.map[goog.labs.net.webChannel.Wire.RAW_DATA_KEY];\n      if (typeof data === 'string') {\n        return data.length;\n      }\n    }\n\n    return undefined;\n  }\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n\n/**\n * @fileoverview Defines a class for parsing JSON using the browser's built in\n * JSON library.\n */\n\ngoog.provide('goog.json.NativeJsonProcessor');\n\ngoog.require('goog.asserts');\ngoog.require('goog.json.Processor');\n\n\n\n/**\n * A class that parses and stringifies JSON using the browser's built-in JSON\n * library, if it is available.\n *\n * Note that the native JSON api has subtle differences across browsers, so\n * use this implementation with care.  See json_test#assertSerialize\n * for details on the differences from goog.json.\n *\n * This implementation is signficantly faster than goog.json, at least on\n * Chrome.  See json_perf.html for a perf test showing the difference.\n *\n * @param {?goog.json.Replacer=} opt_replacer An optional replacer to use during\n *     serialization.\n * @param {?goog.json.Reviver=} opt_reviver An optional reviver to use during\n *     parsing.\n * @constructor\n * @implements {goog.json.Processor}\n * @final\n */\ngoog.json.NativeJsonProcessor = function(opt_replacer, opt_reviver) {\n  'use strict';\n  goog.asserts.assert(goog.global['JSON'] !== undefined, 'JSON not defined');\n\n  /**\n   * @type {goog.json.Replacer|null|undefined}\n   * @private\n   */\n  this.replacer_ = opt_replacer;\n\n  /**\n   * @type {goog.json.Reviver|null|undefined}\n   * @private\n   */\n  this.reviver_ = opt_reviver;\n};\n\n\n/** @override */\ngoog.json.NativeJsonProcessor.prototype.stringify = function(object) {\n  'use strict';\n  return goog.global['JSON'].stringify(object, this.replacer_);\n};\n\n\n/** @override */\ngoog.json.NativeJsonProcessor.prototype.parse = function(s) {\n  'use strict';\n  return goog.global['JSON'].parse(s, this.reviver_);\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Utility functions for managing networking, such as\n * testing network connectivity.\n *\n */\n\n\ngoog.provide('goog.labs.net.webChannel.netUtils');\n\ngoog.require('goog.Uri');\ngoog.require('goog.labs.net.webChannel.WebChannelDebug');\n\ngoog.scope(function() {\n'use strict';\nvar netUtils = goog.labs.net.webChannel.netUtils;\nvar WebChannelDebug = goog.labs.net.webChannel.WebChannelDebug;\n\n\n/**\n * Default timeout to allow for URI pings.\n * @type {number}\n */\nnetUtils.NETWORK_TIMEOUT = 10000;\n\n\n/**\n * Pings the network with an image URI to check if an error is a server error\n * or user's network error.\n *\n * The caller needs to add a 'rand' parameter to make sure the response is\n * not fulfilled by browser cache.\n *\n * @param {function(boolean)} callback The function to call back with results.\n * @param {goog.Uri=} opt_imageUri The URI (of an image) to use for the network\n *     test.\n */\nnetUtils.testNetwork = function(callback, opt_imageUri) {\n  'use strict';\n  var uri = opt_imageUri;\n  if (!uri) {\n    // default google.com image\n    uri = new goog.Uri('//www.google.com/images/cleardot.gif');\n\n    if (!(goog.global.location && goog.global.location.protocol == 'http')) {\n      uri.setScheme('https');  // e.g. chrome-extension\n    }\n    uri.makeUnique();\n  }\n\n  netUtils.testLoadImage(uri.toString(), netUtils.NETWORK_TIMEOUT, callback);\n};\n\n\n/**\n * Test loading the given image, retrying if necessary.\n * @param {string} url URL to the image.\n * @param {number} timeout Milliseconds before giving up.\n * @param {function(boolean)} callback Function to call with results.\n * @param {number} retries The number of times to retry.\n * @param {!WebChannelDebug} channelDebug The debug object\n * @param {number=} opt_pauseBetweenRetriesMS Optional number of milliseconds\n *     between retries - defaults to 0.\n */\nnetUtils.testLoadImageWithRetries = function(\n    url, timeout, callback, retries, channelDebug, opt_pauseBetweenRetriesMS) {\n  'use strict';\n  channelDebug.debug('TestLoadImageWithRetries: ' + opt_pauseBetweenRetriesMS);\n  if (retries == 0) {\n    // no more retries, give up\n    callback(false);\n    return;\n  }\n\n  var pauseBetweenRetries = opt_pauseBetweenRetriesMS || 0;\n  retries--;\n  netUtils.testLoadImage(url, timeout, function(succeeded) {\n    'use strict';\n    if (succeeded) {\n      callback(true);\n    } else {\n      // try again\n      goog.global.setTimeout(function() {\n        'use strict';\n        netUtils.testLoadImageWithRetries(\n            url, timeout, callback, retries, channelDebug, pauseBetweenRetries);\n      }, pauseBetweenRetries);\n    }\n  });\n};\n\n\n/**\n * Test loading the given image.\n * @param {string} url URL to the image.\n * @param {number} timeout Milliseconds before giving up.\n * @param {function(boolean)} callback Function to call with results.\n * @suppress {strictMissingProperties} Part of the go/strict_warnings_migration\n */\nnetUtils.testLoadImage = function(url, timeout, callback) {\n  'use strict';\n  var channelDebug = new WebChannelDebug();\n  channelDebug.debug('TestLoadImage: loading ' + url);\n  if (goog.global.Image) {\n    var img = new Image();\n    img.onload = goog.partial(\n        netUtils.imageCallback_, channelDebug, img, 'TestLoadImage: loaded',\n        true, callback);\n    img.onerror = goog.partial(\n        netUtils.imageCallback_, channelDebug, img, 'TestLoadImage: error',\n        false, callback);\n    img.onabort = goog.partial(\n        netUtils.imageCallback_, channelDebug, img, 'TestLoadImage: abort',\n        false, callback);\n    img.ontimeout = goog.partial(\n        netUtils.imageCallback_, channelDebug, img, 'TestLoadImage: timeout',\n        false, callback);\n\n    goog.global.setTimeout(function() {\n      'use strict';\n      if (img.ontimeout) {\n        img.ontimeout();\n      }\n    }, timeout);\n    img.src = url;\n  } else {\n    // log ERROR_OTHER from environements where Image is not supported\n    callback(false);\n  }\n};\n\n\n/**\n * Wrap the image callback with debug and cleanup logic.\n * @param {!WebChannelDebug} channelDebug The WebChannelDebug object.\n * @param {!Image} img The image element.\n * @param {string} debugText The debug text.\n * @param {boolean} result The result of image loading.\n * @param {function(boolean)} callback The image callback.\n * @private\n */\nnetUtils.imageCallback_ = function(\n    channelDebug, img, debugText, result, callback) {\n  'use strict';\n  try {\n    channelDebug.debug(debugText);\n    netUtils.clearImageCallbacks_(img);\n    callback(result);\n  } catch (e) {\n    channelDebug.dumpException(e);\n  }\n};\n\n\n/**\n * Clears handlers to avoid memory leaks.\n * @param {Image} img The image to clear handlers from.\n * @private\n * @suppress {strictMissingProperties} Part of the go/strict_warnings_migration\n */\nnetUtils.clearImageCallbacks_ = function(img) {\n  'use strict';\n  img.onload = null;\n  img.onerror = null;\n  img.onabort = null;\n  img.ontimeout = null;\n};\n});  // goog.scope\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n\n/**\n * @fileoverview Utility to attempt native JSON processing, falling back to\n *     goog.json if not available.\n *\n *     This is intended as a drop-in for current users of goog.json who want\n *     to take advantage of native JSON if present.\n */\n\ngoog.provide('goog.json.hybrid');\n\ngoog.require('goog.asserts');\ngoog.require('goog.json');\n\n\n/**\n * Attempts to serialize the JSON string natively, falling back to\n * `goog.json.serialize` if unsuccessful.\n * @param {!Object} obj JavaScript object to serialize to JSON.\n * @return {string} Resulting JSON string.\n */\ngoog.json.hybrid.stringify = goog.json.USE_NATIVE_JSON ?\n    goog.global['JSON']['stringify'] :\n    function(obj) {\n      'use strict';\n      if (goog.global.JSON) {\n        try {\n          return goog.global.JSON.stringify(obj);\n        } catch (e) {\n          // Native serialization failed.  Fall through to retry with\n          // goog.json.serialize.\n        }\n      }\n\n      return goog.json.serialize(obj);\n    };\n\n\n/**\n * Attempts to parse the JSON string natively, falling back to\n * the supplied `fallbackParser` if unsuccessful.\n * @param {string} jsonString JSON string to parse.\n * @param {function(string):Object} fallbackParser Fallback JSON parser used\n *     if native\n * @return {?Object} Resulting JSON object.\n * @private\n */\ngoog.json.hybrid.parse_ = function(jsonString, fallbackParser) {\n  'use strict';\n  if (goog.global.JSON) {\n    try {\n      var obj = goog.global.JSON.parse(jsonString);\n      goog.asserts.assert(typeof obj == 'object');\n      return /** @type {?Object} */ (obj);\n    } catch (e) {\n      // Native parse failed.  Fall through to retry with goog.json.parse.\n    }\n  }\n\n  return fallbackParser(jsonString);\n};\n\n\n/**\n * Attempts to parse the JSON string natively, falling back to\n * `goog.json.parse` if unsuccessful.\n * @param {string} jsonString JSON string to parse.\n * @return {?Object} Resulting JSON object.\n */\ngoog.json.hybrid.parse = goog.json.USE_NATIVE_JSON ?\n    goog.global['JSON']['parse'] :\n    function(jsonString) {\n      'use strict';\n      return goog.json.hybrid.parse_(jsonString, goog.json.parse);\n    };\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Constants for HTTP status codes.\n */\n\ngoog.provide('goog.net.HttpStatus');\n\n\n/**\n * HTTP Status Codes defined in RFC 2616, RFC 6585, RFC 4918 and RFC 7538.\n * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html\n * @see http://tools.ietf.org/html/rfc6585\n * @see https://tools.ietf.org/html/rfc4918\n * @see https://tools.ietf.org/html/rfc7538\n * @enum {number}\n */\ngoog.net.HttpStatus = {\n  // Informational 1xx\n  CONTINUE: 100,\n  SWITCHING_PROTOCOLS: 101,\n\n  // Successful 2xx\n  OK: 200,\n  CREATED: 201,\n  ACCEPTED: 202,\n  NON_AUTHORITATIVE_INFORMATION: 203,\n  NO_CONTENT: 204,\n  RESET_CONTENT: 205,\n  PARTIAL_CONTENT: 206,\n  MULTI_STATUS: 207,\n\n  // Redirection 3xx\n  MULTIPLE_CHOICES: 300,\n  MOVED_PERMANENTLY: 301,\n  FOUND: 302,\n  SEE_OTHER: 303,\n  NOT_MODIFIED: 304,\n  USE_PROXY: 305,\n  TEMPORARY_REDIRECT: 307,\n  PERMANENT_REDIRECT: 308,\n\n  // Client Error 4xx\n  BAD_REQUEST: 400,\n  UNAUTHORIZED: 401,\n  PAYMENT_REQUIRED: 402,\n  FORBIDDEN: 403,\n  NOT_FOUND: 404,\n  METHOD_NOT_ALLOWED: 405,\n  NOT_ACCEPTABLE: 406,\n  PROXY_AUTHENTICATION_REQUIRED: 407,\n  REQUEST_TIMEOUT: 408,\n  CONFLICT: 409,\n  GONE: 410,\n  LENGTH_REQUIRED: 411,\n  PRECONDITION_FAILED: 412,\n  REQUEST_ENTITY_TOO_LARGE: 413,\n  REQUEST_URI_TOO_LONG: 414,\n  UNSUPPORTED_MEDIA_TYPE: 415,\n  REQUEST_RANGE_NOT_SATISFIABLE: 416,\n  EXPECTATION_FAILED: 417,\n  UNPROCESSABLE_ENTITY: 422,\n  LOCKED: 423,\n  FAILED_DEPENDENCY: 424,\n  PRECONDITION_REQUIRED: 428,\n  TOO_MANY_REQUESTS: 429,\n  REQUEST_HEADER_FIELDS_TOO_LARGE: 431,\n\n  // Server Error 5xx\n  INTERNAL_SERVER_ERROR: 500,\n  NOT_IMPLEMENTED: 501,\n  BAD_GATEWAY: 502,\n  SERVICE_UNAVAILABLE: 503,\n  GATEWAY_TIMEOUT: 504,\n  HTTP_VERSION_NOT_SUPPORTED: 505,\n  INSUFFICIENT_STORAGE: 507,\n  NETWORK_AUTHENTICATION_REQUIRED: 511,\n\n  /*\n   * IE returns this code for 204 due to its use of URLMon, which returns this\n   * code for 'Operation Aborted'. The status text is 'Unknown', the response\n   * headers are ''. Known to occur on IE 6 on XP through IE9 on Win7.\n   */\n  QUIRK_IE_NO_CONTENT: 1223,\n};\n\n\n/**\n * Returns whether the given status should be considered successful.\n *\n * Successful codes are OK (200), CREATED (201), ACCEPTED (202),\n * NO CONTENT (204), PARTIAL CONTENT (206), NOT MODIFIED (304),\n * and IE's no content code (1223).\n *\n * @param {number} status The status code to test.\n * @return {boolean} Whether the status code should be considered successful.\n */\ngoog.net.HttpStatus.isSuccess = function(status) {\n  'use strict';\n  switch (status) {\n    case goog.net.HttpStatus.OK:\n    case goog.net.HttpStatus.CREATED:\n    case goog.net.HttpStatus.ACCEPTED:\n    case goog.net.HttpStatus.NO_CONTENT:\n    case goog.net.HttpStatus.PARTIAL_CONTENT:\n    case goog.net.HttpStatus.NOT_MODIFIED:\n    case goog.net.HttpStatus.QUIRK_IE_NO_CONTENT:\n      return true;\n\n    default:\n      return false;\n  }\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Provides CORS support for HTTP based RPC requests.\n *\n * As part of net.rpc package, CORS features provided by this class\n * depend on the server support. Please check related specs to decide how\n * to enable any of the features provided by this class.\n */\n\ngoog.module('goog.net.rpc.HttpCors');\n\nconst GoogUri = goog.require('goog.Uri');\nconst googObject = goog.require('goog.object');\nconst googString = goog.require('goog.string');\nconst googUriUtils = goog.require('goog.uri.utils');\n\n\n/**\n * The default URL parameter name to overwrite http headers with a URL param\n * to avoid CORS preflight.\n *\n * See https://github.com/whatwg/fetch/issues/210#issue-129531743 for the spec.\n *\n * @type {string}\n */\nexports.HTTP_HEADERS_PARAM_NAME = '$httpHeaders';\n\n\n/**\n * The default URL parameter name to overwrite http method with a URL param\n * to avoid CORS preflight.\n *\n * See https://github.com/whatwg/fetch/issues/210#issue-129531743 for the spec.\n *\n * @type {string}\n */\nexports.HTTP_METHOD_PARAM_NAME = '$httpMethod';\n\n\n/**\n * Generates the URL parameter value with custom headers encoded as\n * HTTP/1.1 headers block.\n *\n * @param {!Object<string, string>} headers The custom headers.\n * @return {string} The URL param to overwrite custom HTTP headers.\n */\nexports.generateHttpHeadersOverwriteParam = function(headers) {\n  let result = '';\n  googObject.forEach(headers, function(value, key) {\n    result += key;\n    result += ':';\n    result += value;\n    result += '\\r\\n';\n  });\n  return result;\n};\n\n\n/**\n * Generates the URL-encoded URL parameter value with custom headers encoded as\n * HTTP/1.1 headers block.\n *\n * @param {!Object<string, string>} headers The custom headers.\n * @return {string} The URL param to overwrite custom HTTP headers.\n */\nexports.generateEncodedHttpHeadersOverwriteParam = function(headers) {\n  return googString.urlEncode(\n      exports.generateHttpHeadersOverwriteParam(headers));\n};\n\n\n/**\n * Sets custom HTTP headers via an overwrite URL param.\n *\n * @param {!GoogUri|string} url The URI object or a string path.\n * @param {string} urlParam The URL param name.\n * @param {!Object<string, string>} extraHeaders The HTTP headers.\n * @return {!GoogUri|string} The URI object or a string path with headers\n * encoded as a url param.\n */\nexports.setHttpHeadersWithOverwriteParam = function(\n    url, urlParam, extraHeaders) {\n  if (googObject.isEmpty(extraHeaders)) {\n    return url;\n  }\n  const httpHeaders = exports.generateHttpHeadersOverwriteParam(extraHeaders);\n  if (typeof url === 'string') {\n    return googUriUtils.appendParam(\n        url, googString.urlEncode(urlParam), httpHeaders);\n  } else {\n    url.setParameterValue(urlParam, httpHeaders);  // duplicate removed!\n    return url;\n  }\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Implementation of a WebChannel transport using WebChannelBase.\n *\n * When WebChannelBase is used as the underlying transport, the capabilities\n * of the WebChannel are limited to what's supported by the implementation.\n * Particularly, multiplexing is not possible, and only strings are\n * supported as message types.\n */\n\ngoog.provide('goog.labs.net.webChannel.WebChannelBaseTransport');\n\ngoog.require('goog.asserts');\ngoog.require('goog.events.EventTarget');\ngoog.require('goog.json');\ngoog.require('goog.labs.net.webChannel.ChannelRequest');\ngoog.require('goog.labs.net.webChannel.WebChannelBase');\ngoog.require('goog.labs.net.webChannel.Wire');\ngoog.require('goog.log');\ngoog.require('goog.net.WebChannel');\ngoog.require('goog.net.WebChannelTransport');\ngoog.require('goog.object');\ngoog.require('goog.string');\n\n\n\n/**\n * Implementation of {@link goog.net.WebChannelTransport} with\n * {@link goog.labs.net.webChannel.WebChannelBase} as the underlying channel\n * implementation.\n *\n * @constructor\n * @struct\n * @implements {goog.net.WebChannelTransport}\n * @final\n */\ngoog.labs.net.webChannel.WebChannelBaseTransport = function() {\n  'use strict';\n  if (!goog.labs.net.webChannel.ChannelRequest.supportsXhrStreaming()) {\n    throw new Error('Environmental error: no available transport.');\n  }\n};\n\n\ngoog.scope(function() {\n'use strict';\nvar WebChannelBaseTransport = goog.labs.net.webChannel.WebChannelBaseTransport;\nvar WebChannelBase = goog.labs.net.webChannel.WebChannelBase;\nvar Wire = goog.labs.net.webChannel.Wire;\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.prototype.createWebChannel = function(\n    url, opt_options) {\n  'use strict';\n  return new WebChannelBaseTransport.Channel(url, opt_options);\n};\n\n\n\n/**\n * Implementation of the {@link goog.net.WebChannel} interface.\n *\n * @param {string} url The URL path for the new WebChannel instance.\n * @param {!goog.net.WebChannel.Options=} opt_options Configuration for the\n *     new WebChannel instance.\n *\n * @constructor\n * @implements {goog.net.WebChannel}\n * @extends {goog.events.EventTarget}\n * @final\n */\nWebChannelBaseTransport.Channel = function(url, opt_options) {\n  'use strict';\n  WebChannelBaseTransport.Channel.base(this, 'constructor');\n\n  /**\n   * @private {!WebChannelBase} The underlying channel object.\n   */\n  this.channel_ = new WebChannelBase(\n      opt_options, goog.net.WebChannelTransport.CLIENT_VERSION);\n\n  /**\n   * @private {string} The URL of the target server end-point.\n   */\n  this.url_ = url;\n\n  /**\n   * @private {goog.log.Logger} The logger for this class.\n   */\n  this.logger_ =\n      goog.log.getLogger('goog.labs.net.webChannel.WebChannelBaseTransport');\n\n  /**\n   * @private {Object<string, string>} Extra URL parameters\n   * to be added to each HTTP request.\n   */\n  this.messageUrlParams_ =\n      (opt_options && opt_options.messageUrlParams) || null;\n\n  var messageHeaders = (opt_options && opt_options.messageHeaders) || null;\n\n  // default is false\n  if (opt_options && opt_options.clientProtocolHeaderRequired) {\n    if (messageHeaders) {\n      goog.object.set(\n          messageHeaders, goog.net.WebChannel.X_CLIENT_PROTOCOL,\n          goog.net.WebChannel.X_CLIENT_PROTOCOL_WEB_CHANNEL);\n    } else {\n      messageHeaders = goog.object.create(\n          goog.net.WebChannel.X_CLIENT_PROTOCOL,\n          goog.net.WebChannel.X_CLIENT_PROTOCOL_WEB_CHANNEL);\n    }\n  }\n\n  this.channel_.setExtraHeaders(messageHeaders);\n\n  var initHeaders = (opt_options && opt_options.initMessageHeaders) || null;\n\n  if (opt_options && opt_options.messageContentType) {\n    if (initHeaders) {\n      goog.object.set(\n          initHeaders, goog.net.WebChannel.X_WEBCHANNEL_CONTENT_TYPE,\n          opt_options.messageContentType);\n    } else {\n      initHeaders = goog.object.create(\n          goog.net.WebChannel.X_WEBCHANNEL_CONTENT_TYPE,\n          opt_options.messageContentType);\n    }\n  }\n\n  if (opt_options && opt_options.clientProfile) {\n    if (initHeaders) {\n      goog.object.set(\n          initHeaders, goog.net.WebChannel.X_WEBCHANNEL_CLIENT_PROFILE,\n          opt_options.clientProfile);\n    } else {\n      initHeaders = goog.object.create(\n          goog.net.WebChannel.X_WEBCHANNEL_CLIENT_PROFILE,\n          opt_options.clientProfile);\n    }\n  }\n\n  this.channel_.setInitHeaders(initHeaders);\n\n  var httpHeadersOverwriteParam =\n      opt_options && opt_options.httpHeadersOverwriteParam;\n  if (httpHeadersOverwriteParam &&\n      !goog.string.isEmptyOrWhitespace(httpHeadersOverwriteParam)) {\n    this.channel_.setHttpHeadersOverwriteParam(httpHeadersOverwriteParam);\n  }\n\n  /**\n   * @private {boolean} Whether to enable CORS.\n   */\n  this.supportsCrossDomainXhr_ =\n      (opt_options && opt_options.supportsCrossDomainXhr) || false;\n\n  /**\n   * @private {boolean} Whether to send raw Json and bypass v8 wire format.\n   */\n  this.sendRawJson_ = (opt_options && opt_options.sendRawJson) || false;\n\n  // Note that httpSessionIdParam will be ignored if the same parameter name\n  // has already been specified with messageUrlParams\n  var httpSessionIdParam = opt_options && opt_options.httpSessionIdParam;\n  if (httpSessionIdParam &&\n      !goog.string.isEmptyOrWhitespace(httpSessionIdParam)) {\n    this.channel_.setHttpSessionIdParam(httpSessionIdParam);\n    if (goog.object.containsKey(this.messageUrlParams_, httpSessionIdParam)) {\n      goog.object.remove(this.messageUrlParams_, httpSessionIdParam);\n      goog.log.warning(this.logger_,\n          'Ignore httpSessionIdParam also specified with messageUrlParams: '\n          + httpSessionIdParam);\n    }\n  }\n\n  /**\n   * The channel handler.\n   *\n   * @private {!WebChannelBaseTransport.Channel.Handler_}\n   */\n  this.channelHandler_ = new WebChannelBaseTransport.Channel.Handler_(this);\n};\ngoog.inherits(WebChannelBaseTransport.Channel, goog.events.EventTarget);\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.Channel.prototype.open = function() {\n  'use strict';\n  this.channel_.setHandler(this.channelHandler_);\n  if (this.supportsCrossDomainXhr_) {\n    this.channel_.setSupportsCrossDomainXhrs(true);\n  }\n  this.channel_.connect(this.url_, (this.messageUrlParams_ || undefined));\n};\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.Channel.prototype.close = function() {\n  'use strict';\n  this.channel_.disconnect();\n};\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.Channel.prototype.halfClose = function() {\n  'use strict';\n  // to be implemented\n  throw new Error('Not implemented');\n};\n\n\n/**\n * The WebChannelBase only supports object types.\n *\n * @param {!goog.net.WebChannel.MessageData} message The message to send.\n *\n * @override\n */\nWebChannelBaseTransport.Channel.prototype.send = function(message) {\n  'use strict';\n  goog.asserts.assert(\n      goog.isObject(message) || typeof message === 'string',\n      'only object type or raw string is supported');\n\n  if (typeof message === 'string') {\n    var rawJson = {};\n    rawJson[Wire.RAW_DATA_KEY] = message;\n    this.channel_.sendMap(rawJson);\n  } else if (this.sendRawJson_) {\n    var rawJson = {};\n    rawJson[Wire.RAW_DATA_KEY] = goog.json.serialize(message);\n    this.channel_.sendMap(rawJson);\n  } else {\n    this.channel_.sendMap(message);\n  }\n};\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.Channel.prototype.disposeInternal = function() {\n  'use strict';\n  this.channel_.setHandler(null);\n  delete this.channelHandler_;\n  this.channel_.disconnect();\n  delete this.channel_;\n\n  WebChannelBaseTransport.Channel.base(this, 'disposeInternal');\n};\n\n\n\n/**\n * The message event.\n *\n * @param {!Array<?>|!Object} array The data array from the underlying channel.\n * @constructor\n * @extends {goog.net.WebChannel.MessageEvent}\n * @final\n */\nWebChannelBaseTransport.Channel.MessageEvent = function(array) {\n  'use strict';\n  WebChannelBaseTransport.Channel.MessageEvent.base(this, 'constructor');\n\n  // single-metadata only\n  var metadata = array['__sm__'];\n  if (metadata) {\n    this.metadataKey = goog.object.getAnyKey(metadata);\n    if (this.metadataKey) {\n      this.data = goog.object.get(metadata, this.metadataKey);\n    } else {\n      this.data = metadata;  // empty\n    }\n  } else {\n    this.data = array;\n  }\n};\ngoog.inherits(\n    WebChannelBaseTransport.Channel.MessageEvent,\n    goog.net.WebChannel.MessageEvent);\n\n\n\n/**\n * The error event.\n *\n * @param {WebChannelBase.Error} error The error code.\n * @constructor\n * @extends {goog.net.WebChannel.ErrorEvent}\n * @final\n */\nWebChannelBaseTransport.Channel.ErrorEvent = function(error) {\n  'use strict';\n  WebChannelBaseTransport.Channel.ErrorEvent.base(this, 'constructor');\n\n  /**\n   * High-level status code.\n   */\n  this.status = goog.net.WebChannel.ErrorStatus.NETWORK_ERROR;\n\n  /**\n   * @const {WebChannelBase.Error} Internal error code, for debugging use only.\n   */\n  this.errorCode = error;\n};\ngoog.inherits(\n    WebChannelBaseTransport.Channel.ErrorEvent, goog.net.WebChannel.ErrorEvent);\n\n\n\n/**\n * Implementation of {@link WebChannelBase.Handler} interface.\n *\n * @param {!WebChannelBaseTransport.Channel} channel The enclosing WebChannel.\n *\n * @constructor\n * @extends {WebChannelBase.Handler}\n * @private\n */\nWebChannelBaseTransport.Channel.Handler_ = function(channel) {\n  'use strict';\n  WebChannelBaseTransport.Channel.Handler_.base(this, 'constructor');\n\n  /**\n   * @type {!WebChannelBaseTransport.Channel}\n   * @private\n   */\n  this.channel_ = channel;\n};\ngoog.inherits(WebChannelBaseTransport.Channel.Handler_, WebChannelBase.Handler);\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.Channel.Handler_.prototype.channelOpened = function(\n    channel) {\n  'use strict';\n  goog.log.info(\n      this.channel_.logger_, 'WebChannel opened on ' + this.channel_.url_);\n  this.channel_.dispatchEvent(goog.net.WebChannel.EventType.OPEN);\n};\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.Channel.Handler_.prototype.channelHandleArray =\n    function(channel, array) {\n  'use strict';\n  goog.asserts.assert(array, 'array expected to be defined');\n  this.channel_.dispatchEvent(\n      new WebChannelBaseTransport.Channel.MessageEvent(array));\n};\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.Channel.Handler_.prototype.channelError = function(\n    channel, error) {\n  'use strict';\n  goog.log.info(\n      this.channel_.logger_,\n      'WebChannel aborted on ' + this.channel_.url_ +\n          ' due to channel error: ' + error);\n  this.channel_.dispatchEvent(\n      new WebChannelBaseTransport.Channel.ErrorEvent(error));\n};\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.Channel.Handler_.prototype.channelClosed = function(\n    channel, opt_pendingMaps, opt_undeliveredMaps) {\n  'use strict';\n  goog.log.info(\n      this.channel_.logger_, 'WebChannel closed on ' + this.channel_.url_);\n  this.channel_.dispatchEvent(goog.net.WebChannel.EventType.CLOSE);\n};\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.Channel.prototype.getRuntimeProperties = function() {\n  'use strict';\n  return new WebChannelBaseTransport.ChannelProperties(this.channel_);\n};\n\n\n\n/**\n * Implementation of the {@link goog.net.WebChannel.RuntimeProperties}.\n *\n * @param {!WebChannelBase} channel The underlying channel object.\n *\n * @constructor\n * @implements {goog.net.WebChannel.RuntimeProperties}\n * @final\n */\nWebChannelBaseTransport.ChannelProperties = function(channel) {\n  'use strict';\n  /**\n   * The underlying channel object.\n   *\n   * @private {!WebChannelBase}\n   */\n  this.channel_ = channel;\n};\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.ChannelProperties.prototype.getConcurrentRequestLimit =\n    function() {\n  'use strict';\n  return this.channel_.getForwardChannelRequestPool().getMaxSize();\n};\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.ChannelProperties.prototype.isSpdyEnabled = function() {\n  'use strict';\n  return this.getConcurrentRequestLimit() > 1;\n};\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.ChannelProperties.prototype.getPendingRequestCount =\n    function() {\n  'use strict';\n  return this.channel_.getForwardChannelRequestPool().getRequestCount();\n};\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.ChannelProperties.prototype.getHttpSessionId =\n    function() {\n  'use strict';\n  return this.channel_.getHttpSessionId();\n};\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.ChannelProperties.prototype.commit = function(\n    callback) {\n  'use strict';\n  this.channel_.setForwardChannelFlushCallback(callback);\n};\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.ChannelProperties.prototype.getNonAckedMessageCount =\n    goog.abstractMethod;\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.ChannelProperties.prototype.notifyNonAckedMessageCount =\n    goog.abstractMethod;\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.ChannelProperties.prototype.onCommit =\n    goog.abstractMethod;\n\n\n/**\n * @override\n */\nWebChannelBaseTransport.ChannelProperties.prototype.ackCommit =\n    goog.abstractMethod;\n\n\n/** @override */\nWebChannelBaseTransport.ChannelProperties.prototype.getLastStatusCode =\n    function() {\n  'use strict';\n  return this.channel_.getLastStatusCode();\n};\n});  // goog.scope\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Transport support for WebChannel.\n *\n * The <code>WebChannelTransport</code> implementation serves as the factory\n * for <code>WebChannel</code>, which offers an abstraction for\n * point-to-point socket-like communication similar to what BrowserChannel\n * or HTML5 WebSocket offers.\n */\n\ngoog.provide('goog.net.WebChannelTransport');\n\ngoog.requireType('goog.net.WebChannel');\ngoog.requireType('goog.net.WebChannel.Options');\n\n\n\n/**\n * A WebChannelTransport instance represents a shared context of logical\n * connectivity between a browser client and a remote origin.\n *\n * Over a single WebChannelTransport instance, multiple WebChannels may be\n * created against different URLs, which may all share the same\n * underlying connectivity (i.e. TCP connection) whenever possible.\n *\n * When multi-domains are supported, such as CORS, multiple origins may be\n * supported over a single WebChannelTransport instance at the same time.\n *\n * Sharing between different window contexts such as tabs is not addressed\n * by WebChannelTransport. Applications may choose HTML5 shared workers\n * or other techniques to access the same transport instance\n * across different window contexts.\n *\n * @interface\n */\ngoog.net.WebChannelTransport = function() {};\n\n\n/**\n * The client version. This integer value will be passed to the server\n * when a channel is opened to inform the server the client \"capabilities\".\n *\n * Wire protocol version is a different concept and is internal to the\n * transport implementation.\n *\n * @const\n * @type {number}\n */\ngoog.net.WebChannelTransport.CLIENT_VERSION = 22;\n\n\n/**\n * Create a new WebChannel instance.\n *\n * The new WebChannel is to be opened against the server-side resource\n * as specified by the given URL. See {@link goog.net.WebChannel} for detailed\n * semantics.\n *\n * @param {string} url The URL path for the new WebChannel instance.\n * @param {!goog.net.WebChannel.Options=} opt_options Configuration for the\n *     new WebChannel instance. The configuration object is reusable after\n *     the new channel instance is created.\n * @return {!goog.net.WebChannel} the newly created WebChannel instance.\n */\ngoog.net.WebChannelTransport.prototype.createWebChannel = goog.abstractMethod;\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * Bring in closure-library dependencies\n */\n\ngoog.provide('firebase.webchannel.wrapper');\n\n// goog.net.WebChannelTransport\ngoog.require('goog.net.createWebChannelTransport');\ngoog.require('goog.labs.net.webChannel.requestStats');\ngoog.require('goog.labs.net.webChannel.WebChannelBaseTransport');\n\n/**\n * NOTE: The `createWebChannel` function takes an options object as a second param\n * whose properties are typically mangled. We override these in externs/overrides.js\n * Without those externs, this does not function properly.\n */\ngoog.labs.net.webChannel.WebChannelBaseTransport.prototype['createWebChannel'] =\n  goog.labs.net.webChannel.WebChannelBaseTransport.prototype.createWebChannel;\ngoog.labs.net.webChannel.WebChannelBaseTransport.Channel.prototype['send'] =\n  goog.labs.net.webChannel.WebChannelBaseTransport.Channel.prototype.send;\ngoog.labs.net.webChannel.WebChannelBaseTransport.Channel.prototype['open'] =\n  goog.labs.net.webChannel.WebChannelBaseTransport.Channel.prototype.open;\ngoog.labs.net.webChannel.WebChannelBaseTransport.Channel.prototype['close'] =\n  goog.labs.net.webChannel.WebChannelBaseTransport.Channel.prototype.close;\n\n// goog.net.ErrorCode\ngoog.require('goog.net.ErrorCode');\ngoog.net.ErrorCode['NO_ERROR'] = goog.net.ErrorCode.NO_ERROR;\ngoog.net.ErrorCode['TIMEOUT'] = goog.net.ErrorCode.TIMEOUT;\ngoog.net.ErrorCode['HTTP_ERROR'] = goog.net.ErrorCode.HTTP_ERROR;\n\n// goog.net.ErrorType\ngoog.require('goog.net.EventType');\ngoog.net.EventType['COMPLETE'] = goog.net.EventType.COMPLETE;\n\n// goog.net.WebChannel\ngoog.require('goog.net.WebChannel');\ngoog.require('goog.events.EventTarget');\ngoog.net.WebChannel['EventType'] = goog.net.WebChannel.EventType;\ngoog.net.WebChannel.EventType['OPEN'] = goog.net.WebChannel.EventType.OPEN;\ngoog.net.WebChannel.EventType['CLOSE'] = goog.net.WebChannel.EventType.CLOSE;\ngoog.net.WebChannel.EventType['ERROR'] = goog.net.WebChannel.EventType.ERROR;\ngoog.net.WebChannel.EventType['MESSAGE'] =\n  goog.net.WebChannel.EventType.MESSAGE;\ngoog.events.EventTarget.prototype['listen'] =\n  goog.events.EventTarget.prototype.listen;\n\ngoog.require('goog.net.XhrIo');\ngoog.net.XhrIo.prototype['listenOnce'] = goog.net.XhrIo.prototype.listenOnce;\ngoog.net.XhrIo.prototype['getLastError'] =\n  goog.net.XhrIo.prototype.getLastError;\ngoog.net.XhrIo.prototype['getLastErrorCode'] =\n  goog.net.XhrIo.prototype.getLastErrorCode;\ngoog.net.XhrIo.prototype['getStatus'] = goog.net.XhrIo.prototype.getStatus;\ngoog.net.XhrIo.prototype['getResponseJson'] =\n  goog.net.XhrIo.prototype.getResponseJson;\ngoog.net.XhrIo.prototype['getResponseText'] =\n  goog.net.XhrIo.prototype.getResponseText;\ngoog.net.XhrIo.prototype['send'] = goog.net.XhrIo.prototype.send;\n\nmodule['exports']['createWebChannelTransport'] =\n  goog.net.createWebChannelTransport;\nmodule['exports']['getStatEventTarget'] =\n  goog.labs.net.webChannel.requestStats.getStatEventTarget;\nmodule['exports']['ErrorCode'] = goog.net.ErrorCode;\nmodule['exports']['EventType'] = goog.net.EventType;\nmodule['exports']['Event'] = goog.labs.net.webChannel.requestStats.Event;\nmodule['exports']['Stat'] = goog.labs.net.webChannel.requestStats.Stat;\nmodule['exports']['WebChannel'] = goog.net.WebChannel;\nmodule['exports']['XhrIo'] = goog.net.XhrIo;\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Default factory for <code>WebChannelTransport</code> to\n * avoid exposing concrete classes to clients.\n */\n\ngoog.provide('goog.net.createWebChannelTransport');\n\ngoog.require('goog.labs.net.webChannel.WebChannelBaseTransport');\ngoog.requireType('goog.net.WebChannelTransport');\n\n\n/**\n * Create a new WebChannelTransport instance using the default implementation.\n * Throws an error message if no default transport available in the current\n * environment.\n *\n * @return {!goog.net.WebChannelTransport} the newly created transport instance.\n */\ngoog.net.createWebChannelTransport = function() {\n  'use strict';\n  return new goog.labs.net.webChannel.WebChannelBaseTransport();\n};\n","export default function _defineProperty(obj, key, value) {\n  if (key in obj) {\n    Object.defineProperty(obj, key, {\n      value: value,\n      enumerable: true,\n      configurable: true,\n      writable: true\n    });\n  } else {\n    obj[key] = value;\n  }\n\n  return obj;\n}","function isAbsolute(pathname) {\n  return pathname.charAt(0) === '/';\n}\n\n// About 1.5x faster than the two-arg version of Array#splice()\nfunction spliceOne(list, index) {\n  for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1) {\n    list[i] = list[k];\n  }\n\n  list.pop();\n}\n\n// This implementation is based heavily on node's url.parse\nfunction resolvePathname(to, from) {\n  if (from === undefined) from = '';\n\n  var toParts = (to && to.split('/')) || [];\n  var fromParts = (from && from.split('/')) || [];\n\n  var isToAbs = to && isAbsolute(to);\n  var isFromAbs = from && isAbsolute(from);\n  var mustEndAbs = isToAbs || isFromAbs;\n\n  if (to && isAbsolute(to)) {\n    // to is absolute\n    fromParts = toParts;\n  } else if (toParts.length) {\n    // to is relative, drop the filename\n    fromParts.pop();\n    fromParts = fromParts.concat(toParts);\n  }\n\n  if (!fromParts.length) return '/';\n\n  var hasTrailingSlash;\n  if (fromParts.length) {\n    var last = fromParts[fromParts.length - 1];\n    hasTrailingSlash = last === '.' || last === '..' || last === '';\n  } else {\n    hasTrailingSlash = false;\n  }\n\n  var up = 0;\n  for (var i = fromParts.length; i >= 0; i--) {\n    var part = fromParts[i];\n\n    if (part === '.') {\n      spliceOne(fromParts, i);\n    } else if (part === '..') {\n      spliceOne(fromParts, i);\n      up++;\n    } else if (up) {\n      spliceOne(fromParts, i);\n      up--;\n    }\n  }\n\n  if (!mustEndAbs) for (; up--; up) fromParts.unshift('..');\n\n  if (\n    mustEndAbs &&\n    fromParts[0] !== '' &&\n    (!fromParts[0] || !isAbsolute(fromParts[0]))\n  )\n    fromParts.unshift('');\n\n  var result = fromParts.join('/');\n\n  if (hasTrailingSlash && result.substr(-1) !== '/') result += '/';\n\n  return result;\n}\n\nexport default resolvePathname;\n","function valueOf(obj) {\n  return obj.valueOf ? obj.valueOf() : Object.prototype.valueOf.call(obj);\n}\n\nfunction valueEqual(a, b) {\n  // Test for strict equality first.\n  if (a === b) return true;\n\n  // Otherwise, if either of them == null they are not equal.\n  if (a == null || b == null) return false;\n\n  if (Array.isArray(a)) {\n    return (\n      Array.isArray(b) &&\n      a.length === b.length &&\n      a.every(function(item, index) {\n        return valueEqual(item, b[index]);\n      })\n    );\n  }\n\n  if (typeof a === 'object' || typeof b === 'object') {\n    var aValue = valueOf(a);\n    var bValue = valueOf(b);\n\n    if (aValue !== a || bValue !== b) return valueEqual(aValue, bValue);\n\n    return Object.keys(Object.assign({}, a, b)).every(function(key) {\n      return valueEqual(a[key], b[key]);\n    });\n  }\n\n  return false;\n}\n\nexport default valueEqual;\n","import _extends from '@babel/runtime/helpers/esm/extends';\nimport resolvePathname from 'resolve-pathname';\nimport valueEqual from 'value-equal';\nimport warning from 'tiny-warning';\nimport invariant from 'tiny-invariant';\n\nfunction addLeadingSlash(path) {\n  return path.charAt(0) === '/' ? path : '/' + path;\n}\nfunction stripLeadingSlash(path) {\n  return path.charAt(0) === '/' ? path.substr(1) : path;\n}\nfunction hasBasename(path, prefix) {\n  return path.toLowerCase().indexOf(prefix.toLowerCase()) === 0 && '/?#'.indexOf(path.charAt(prefix.length)) !== -1;\n}\nfunction stripBasename(path, prefix) {\n  return hasBasename(path, prefix) ? path.substr(prefix.length) : path;\n}\nfunction stripTrailingSlash(path) {\n  return path.charAt(path.length - 1) === '/' ? path.slice(0, -1) : path;\n}\nfunction parsePath(path) {\n  var pathname = path || '/';\n  var search = '';\n  var hash = '';\n  var hashIndex = pathname.indexOf('#');\n\n  if (hashIndex !== -1) {\n    hash = pathname.substr(hashIndex);\n    pathname = pathname.substr(0, hashIndex);\n  }\n\n  var searchIndex = pathname.indexOf('?');\n\n  if (searchIndex !== -1) {\n    search = pathname.substr(searchIndex);\n    pathname = pathname.substr(0, searchIndex);\n  }\n\n  return {\n    pathname: pathname,\n    search: search === '?' ? '' : search,\n    hash: hash === '#' ? '' : hash\n  };\n}\nfunction createPath(location) {\n  var pathname = location.pathname,\n      search = location.search,\n      hash = location.hash;\n  var path = pathname || '/';\n  if (search && search !== '?') path += search.charAt(0) === '?' ? search : \"?\" + search;\n  if (hash && hash !== '#') path += hash.charAt(0) === '#' ? hash : \"#\" + hash;\n  return path;\n}\n\nfunction createLocation(path, state, key, currentLocation) {\n  var location;\n\n  if (typeof path === 'string') {\n    // Two-arg form: push(path, state)\n    location = parsePath(path);\n    location.state = state;\n  } else {\n    // One-arg form: push(location)\n    location = _extends({}, path);\n    if (location.pathname === undefined) location.pathname = '';\n\n    if (location.search) {\n      if (location.search.charAt(0) !== '?') location.search = '?' + location.search;\n    } else {\n      location.search = '';\n    }\n\n    if (location.hash) {\n      if (location.hash.charAt(0) !== '#') location.hash = '#' + location.hash;\n    } else {\n      location.hash = '';\n    }\n\n    if (state !== undefined && location.state === undefined) location.state = state;\n  }\n\n  try {\n    location.pathname = decodeURI(location.pathname);\n  } catch (e) {\n    if (e instanceof URIError) {\n      throw new URIError('Pathname \"' + location.pathname + '\" could not be decoded. ' + 'This is likely caused by an invalid percent-encoding.');\n    } else {\n      throw e;\n    }\n  }\n\n  if (key) location.key = key;\n\n  if (currentLocation) {\n    // Resolve incomplete/relative pathname relative to current location.\n    if (!location.pathname) {\n      location.pathname = currentLocation.pathname;\n    } else if (location.pathname.charAt(0) !== '/') {\n      location.pathname = resolvePathname(location.pathname, currentLocation.pathname);\n    }\n  } else {\n    // When there is no prior location and pathname is empty, set it to /\n    if (!location.pathname) {\n      location.pathname = '/';\n    }\n  }\n\n  return location;\n}\nfunction locationsAreEqual(a, b) {\n  return a.pathname === b.pathname && a.search === b.search && a.hash === b.hash && a.key === b.key && valueEqual(a.state, b.state);\n}\n\nfunction createTransitionManager() {\n  var prompt = null;\n\n  function setPrompt(nextPrompt) {\n    process.env.NODE_ENV !== \"production\" ? warning(prompt == null, 'A history supports only one prompt at a time') : void 0;\n    prompt = nextPrompt;\n    return function () {\n      if (prompt === nextPrompt) prompt = null;\n    };\n  }\n\n  function confirmTransitionTo(location, action, getUserConfirmation, callback) {\n    // TODO: If another transition starts while we're still confirming\n    // the previous one, we may end up in a weird state. Figure out the\n    // best way to handle this.\n    if (prompt != null) {\n      var result = typeof prompt === 'function' ? prompt(location, action) : prompt;\n\n      if (typeof result === 'string') {\n        if (typeof getUserConfirmation === 'function') {\n          getUserConfirmation(result, callback);\n        } else {\n          process.env.NODE_ENV !== \"production\" ? warning(false, 'A history needs a getUserConfirmation function in order to use a prompt message') : void 0;\n          callback(true);\n        }\n      } else {\n        // Return false from a transition hook to cancel the transition.\n        callback(result !== false);\n      }\n    } else {\n      callback(true);\n    }\n  }\n\n  var listeners = [];\n\n  function appendListener(fn) {\n    var isActive = true;\n\n    function listener() {\n      if (isActive) fn.apply(void 0, arguments);\n    }\n\n    listeners.push(listener);\n    return function () {\n      isActive = false;\n      listeners = listeners.filter(function (item) {\n        return item !== listener;\n      });\n    };\n  }\n\n  function notifyListeners() {\n    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n      args[_key] = arguments[_key];\n    }\n\n    listeners.forEach(function (listener) {\n      return listener.apply(void 0, args);\n    });\n  }\n\n  return {\n    setPrompt: setPrompt,\n    confirmTransitionTo: confirmTransitionTo,\n    appendListener: appendListener,\n    notifyListeners: notifyListeners\n  };\n}\n\nvar canUseDOM = !!(typeof window !== 'undefined' && window.document && window.document.createElement);\nfunction getConfirmation(message, callback) {\n  callback(window.confirm(message)); // eslint-disable-line no-alert\n}\n/**\n * Returns true if the HTML5 history API is supported. Taken from Modernizr.\n *\n * https://github.com/Modernizr/Modernizr/blob/master/LICENSE\n * https://github.com/Modernizr/Modernizr/blob/master/feature-detects/history.js\n * changed to avoid false negatives for Windows Phones: https://github.com/reactjs/react-router/issues/586\n */\n\nfunction supportsHistory() {\n  var ua = window.navigator.userAgent;\n  if ((ua.indexOf('Android 2.') !== -1 || ua.indexOf('Android 4.0') !== -1) && ua.indexOf('Mobile Safari') !== -1 && ua.indexOf('Chrome') === -1 && ua.indexOf('Windows Phone') === -1) return false;\n  return window.history && 'pushState' in window.history;\n}\n/**\n * Returns true if browser fires popstate on hash change.\n * IE10 and IE11 do not.\n */\n\nfunction supportsPopStateOnHashChange() {\n  return window.navigator.userAgent.indexOf('Trident') === -1;\n}\n/**\n * Returns false if using go(n) with hash history causes a full page reload.\n */\n\nfunction supportsGoWithoutReloadUsingHash() {\n  return window.navigator.userAgent.indexOf('Firefox') === -1;\n}\n/**\n * Returns true if a given popstate event is an extraneous WebKit event.\n * Accounts for the fact that Chrome on iOS fires real popstate events\n * containing undefined state when pressing the back button.\n */\n\nfunction isExtraneousPopstateEvent(event) {\n  return event.state === undefined && navigator.userAgent.indexOf('CriOS') === -1;\n}\n\nvar PopStateEvent = 'popstate';\nvar HashChangeEvent = 'hashchange';\n\nfunction getHistoryState() {\n  try {\n    return window.history.state || {};\n  } catch (e) {\n    // IE 11 sometimes throws when accessing window.history.state\n    // See https://github.com/ReactTraining/history/pull/289\n    return {};\n  }\n}\n/**\n * Creates a history object that uses the HTML5 history API including\n * pushState, replaceState, and the popstate event.\n */\n\n\nfunction createBrowserHistory(props) {\n  if (props === void 0) {\n    props = {};\n  }\n\n  !canUseDOM ? process.env.NODE_ENV !== \"production\" ? invariant(false, 'Browser history needs a DOM') : invariant(false) : void 0;\n  var globalHistory = window.history;\n  var canUseHistory = supportsHistory();\n  var needsHashChangeListener = !supportsPopStateOnHashChange();\n  var _props = props,\n      _props$forceRefresh = _props.forceRefresh,\n      forceRefresh = _props$forceRefresh === void 0 ? false : _props$forceRefresh,\n      _props$getUserConfirm = _props.getUserConfirmation,\n      getUserConfirmation = _props$getUserConfirm === void 0 ? getConfirmation : _props$getUserConfirm,\n      _props$keyLength = _props.keyLength,\n      keyLength = _props$keyLength === void 0 ? 6 : _props$keyLength;\n  var basename = props.basename ? stripTrailingSlash(addLeadingSlash(props.basename)) : '';\n\n  function getDOMLocation(historyState) {\n    var _ref = historyState || {},\n        key = _ref.key,\n        state = _ref.state;\n\n    var _window$location = window.location,\n        pathname = _window$location.pathname,\n        search = _window$location.search,\n        hash = _window$location.hash;\n    var path = pathname + search + hash;\n    process.env.NODE_ENV !== \"production\" ? warning(!basename || hasBasename(path, basename), 'You are attempting to use a basename on a page whose URL path does not begin ' + 'with the basename. Expected path \"' + path + '\" to begin with \"' + basename + '\".') : void 0;\n    if (basename) path = stripBasename(path, basename);\n    return createLocation(path, state, key);\n  }\n\n  function createKey() {\n    return Math.random().toString(36).substr(2, keyLength);\n  }\n\n  var transitionManager = createTransitionManager();\n\n  function setState(nextState) {\n    _extends(history, nextState);\n\n    history.length = globalHistory.length;\n    transitionManager.notifyListeners(history.location, history.action);\n  }\n\n  function handlePopState(event) {\n    // Ignore extraneous popstate events in WebKit.\n    if (isExtraneousPopstateEvent(event)) return;\n    handlePop(getDOMLocation(event.state));\n  }\n\n  function handleHashChange() {\n    handlePop(getDOMLocation(getHistoryState()));\n  }\n\n  var forceNextPop = false;\n\n  function handlePop(location) {\n    if (forceNextPop) {\n      forceNextPop = false;\n      setState();\n    } else {\n      var action = 'POP';\n      transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n        if (ok) {\n          setState({\n            action: action,\n            location: location\n          });\n        } else {\n          revertPop(location);\n        }\n      });\n    }\n  }\n\n  function revertPop(fromLocation) {\n    var toLocation = history.location; // TODO: We could probably make this more reliable by\n    // keeping a list of keys we've seen in sessionStorage.\n    // Instead, we just default to 0 for keys we don't know.\n\n    var toIndex = allKeys.indexOf(toLocation.key);\n    if (toIndex === -1) toIndex = 0;\n    var fromIndex = allKeys.indexOf(fromLocation.key);\n    if (fromIndex === -1) fromIndex = 0;\n    var delta = toIndex - fromIndex;\n\n    if (delta) {\n      forceNextPop = true;\n      go(delta);\n    }\n  }\n\n  var initialLocation = getDOMLocation(getHistoryState());\n  var allKeys = [initialLocation.key]; // Public interface\n\n  function createHref(location) {\n    return basename + createPath(location);\n  }\n\n  function push(path, state) {\n    process.env.NODE_ENV !== \"production\" ? warning(!(typeof path === 'object' && path.state !== undefined && state !== undefined), 'You should avoid providing a 2nd state argument to push when the 1st ' + 'argument is a location-like object that already has state; it is ignored') : void 0;\n    var action = 'PUSH';\n    var location = createLocation(path, state, createKey(), history.location);\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (!ok) return;\n      var href = createHref(location);\n      var key = location.key,\n          state = location.state;\n\n      if (canUseHistory) {\n        globalHistory.pushState({\n          key: key,\n          state: state\n        }, null, href);\n\n        if (forceRefresh) {\n          window.location.href = href;\n        } else {\n          var prevIndex = allKeys.indexOf(history.location.key);\n          var nextKeys = allKeys.slice(0, prevIndex + 1);\n          nextKeys.push(location.key);\n          allKeys = nextKeys;\n          setState({\n            action: action,\n            location: location\n          });\n        }\n      } else {\n        process.env.NODE_ENV !== \"production\" ? warning(state === undefined, 'Browser history cannot push state in browsers that do not support HTML5 history') : void 0;\n        window.location.href = href;\n      }\n    });\n  }\n\n  function replace(path, state) {\n    process.env.NODE_ENV !== \"production\" ? warning(!(typeof path === 'object' && path.state !== undefined && state !== undefined), 'You should avoid providing a 2nd state argument to replace when the 1st ' + 'argument is a location-like object that already has state; it is ignored') : void 0;\n    var action = 'REPLACE';\n    var location = createLocation(path, state, createKey(), history.location);\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (!ok) return;\n      var href = createHref(location);\n      var key = location.key,\n          state = location.state;\n\n      if (canUseHistory) {\n        globalHistory.replaceState({\n          key: key,\n          state: state\n        }, null, href);\n\n        if (forceRefresh) {\n          window.location.replace(href);\n        } else {\n          var prevIndex = allKeys.indexOf(history.location.key);\n          if (prevIndex !== -1) allKeys[prevIndex] = location.key;\n          setState({\n            action: action,\n            location: location\n          });\n        }\n      } else {\n        process.env.NODE_ENV !== \"production\" ? warning(state === undefined, 'Browser history cannot replace state in browsers that do not support HTML5 history') : void 0;\n        window.location.replace(href);\n      }\n    });\n  }\n\n  function go(n) {\n    globalHistory.go(n);\n  }\n\n  function goBack() {\n    go(-1);\n  }\n\n  function goForward() {\n    go(1);\n  }\n\n  var listenerCount = 0;\n\n  function checkDOMListeners(delta) {\n    listenerCount += delta;\n\n    if (listenerCount === 1 && delta === 1) {\n      window.addEventListener(PopStateEvent, handlePopState);\n      if (needsHashChangeListener) window.addEventListener(HashChangeEvent, handleHashChange);\n    } else if (listenerCount === 0) {\n      window.removeEventListener(PopStateEvent, handlePopState);\n      if (needsHashChangeListener) window.removeEventListener(HashChangeEvent, handleHashChange);\n    }\n  }\n\n  var isBlocked = false;\n\n  function block(prompt) {\n    if (prompt === void 0) {\n      prompt = false;\n    }\n\n    var unblock = transitionManager.setPrompt(prompt);\n\n    if (!isBlocked) {\n      checkDOMListeners(1);\n      isBlocked = true;\n    }\n\n    return function () {\n      if (isBlocked) {\n        isBlocked = false;\n        checkDOMListeners(-1);\n      }\n\n      return unblock();\n    };\n  }\n\n  function listen(listener) {\n    var unlisten = transitionManager.appendListener(listener);\n    checkDOMListeners(1);\n    return function () {\n      checkDOMListeners(-1);\n      unlisten();\n    };\n  }\n\n  var history = {\n    length: globalHistory.length,\n    action: 'POP',\n    location: initialLocation,\n    createHref: createHref,\n    push: push,\n    replace: replace,\n    go: go,\n    goBack: goBack,\n    goForward: goForward,\n    block: block,\n    listen: listen\n  };\n  return history;\n}\n\nvar HashChangeEvent$1 = 'hashchange';\nvar HashPathCoders = {\n  hashbang: {\n    encodePath: function encodePath(path) {\n      return path.charAt(0) === '!' ? path : '!/' + stripLeadingSlash(path);\n    },\n    decodePath: function decodePath(path) {\n      return path.charAt(0) === '!' ? path.substr(1) : path;\n    }\n  },\n  noslash: {\n    encodePath: stripLeadingSlash,\n    decodePath: addLeadingSlash\n  },\n  slash: {\n    encodePath: addLeadingSlash,\n    decodePath: addLeadingSlash\n  }\n};\n\nfunction stripHash(url) {\n  var hashIndex = url.indexOf('#');\n  return hashIndex === -1 ? url : url.slice(0, hashIndex);\n}\n\nfunction getHashPath() {\n  // We can't use window.location.hash here because it's not\n  // consistent across browsers - Firefox will pre-decode it!\n  var href = window.location.href;\n  var hashIndex = href.indexOf('#');\n  return hashIndex === -1 ? '' : href.substring(hashIndex + 1);\n}\n\nfunction pushHashPath(path) {\n  window.location.hash = path;\n}\n\nfunction replaceHashPath(path) {\n  window.location.replace(stripHash(window.location.href) + '#' + path);\n}\n\nfunction createHashHistory(props) {\n  if (props === void 0) {\n    props = {};\n  }\n\n  !canUseDOM ? process.env.NODE_ENV !== \"production\" ? invariant(false, 'Hash history needs a DOM') : invariant(false) : void 0;\n  var globalHistory = window.history;\n  var canGoWithoutReload = supportsGoWithoutReloadUsingHash();\n  var _props = props,\n      _props$getUserConfirm = _props.getUserConfirmation,\n      getUserConfirmation = _props$getUserConfirm === void 0 ? getConfirmation : _props$getUserConfirm,\n      _props$hashType = _props.hashType,\n      hashType = _props$hashType === void 0 ? 'slash' : _props$hashType;\n  var basename = props.basename ? stripTrailingSlash(addLeadingSlash(props.basename)) : '';\n  var _HashPathCoders$hashT = HashPathCoders[hashType],\n      encodePath = _HashPathCoders$hashT.encodePath,\n      decodePath = _HashPathCoders$hashT.decodePath;\n\n  function getDOMLocation() {\n    var path = decodePath(getHashPath());\n    process.env.NODE_ENV !== \"production\" ? warning(!basename || hasBasename(path, basename), 'You are attempting to use a basename on a page whose URL path does not begin ' + 'with the basename. Expected path \"' + path + '\" to begin with \"' + basename + '\".') : void 0;\n    if (basename) path = stripBasename(path, basename);\n    return createLocation(path);\n  }\n\n  var transitionManager = createTransitionManager();\n\n  function setState(nextState) {\n    _extends(history, nextState);\n\n    history.length = globalHistory.length;\n    transitionManager.notifyListeners(history.location, history.action);\n  }\n\n  var forceNextPop = false;\n  var ignorePath = null;\n\n  function locationsAreEqual$$1(a, b) {\n    return a.pathname === b.pathname && a.search === b.search && a.hash === b.hash;\n  }\n\n  function handleHashChange() {\n    var path = getHashPath();\n    var encodedPath = encodePath(path);\n\n    if (path !== encodedPath) {\n      // Ensure we always have a properly-encoded hash.\n      replaceHashPath(encodedPath);\n    } else {\n      var location = getDOMLocation();\n      var prevLocation = history.location;\n      if (!forceNextPop && locationsAreEqual$$1(prevLocation, location)) return; // A hashchange doesn't always == location change.\n\n      if (ignorePath === createPath(location)) return; // Ignore this change; we already setState in push/replace.\n\n      ignorePath = null;\n      handlePop(location);\n    }\n  }\n\n  function handlePop(location) {\n    if (forceNextPop) {\n      forceNextPop = false;\n      setState();\n    } else {\n      var action = 'POP';\n      transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n        if (ok) {\n          setState({\n            action: action,\n            location: location\n          });\n        } else {\n          revertPop(location);\n        }\n      });\n    }\n  }\n\n  function revertPop(fromLocation) {\n    var toLocation = history.location; // TODO: We could probably make this more reliable by\n    // keeping a list of paths we've seen in sessionStorage.\n    // Instead, we just default to 0 for paths we don't know.\n\n    var toIndex = allPaths.lastIndexOf(createPath(toLocation));\n    if (toIndex === -1) toIndex = 0;\n    var fromIndex = allPaths.lastIndexOf(createPath(fromLocation));\n    if (fromIndex === -1) fromIndex = 0;\n    var delta = toIndex - fromIndex;\n\n    if (delta) {\n      forceNextPop = true;\n      go(delta);\n    }\n  } // Ensure the hash is encoded properly before doing anything else.\n\n\n  var path = getHashPath();\n  var encodedPath = encodePath(path);\n  if (path !== encodedPath) replaceHashPath(encodedPath);\n  var initialLocation = getDOMLocation();\n  var allPaths = [createPath(initialLocation)]; // Public interface\n\n  function createHref(location) {\n    var baseTag = document.querySelector('base');\n    var href = '';\n\n    if (baseTag && baseTag.getAttribute('href')) {\n      href = stripHash(window.location.href);\n    }\n\n    return href + '#' + encodePath(basename + createPath(location));\n  }\n\n  function push(path, state) {\n    process.env.NODE_ENV !== \"production\" ? warning(state === undefined, 'Hash history cannot push state; it is ignored') : void 0;\n    var action = 'PUSH';\n    var location = createLocation(path, undefined, undefined, history.location);\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (!ok) return;\n      var path = createPath(location);\n      var encodedPath = encodePath(basename + path);\n      var hashChanged = getHashPath() !== encodedPath;\n\n      if (hashChanged) {\n        // We cannot tell if a hashchange was caused by a PUSH, so we'd\n        // rather setState here and ignore the hashchange. The caveat here\n        // is that other hash histories in the page will consider it a POP.\n        ignorePath = path;\n        pushHashPath(encodedPath);\n        var prevIndex = allPaths.lastIndexOf(createPath(history.location));\n        var nextPaths = allPaths.slice(0, prevIndex + 1);\n        nextPaths.push(path);\n        allPaths = nextPaths;\n        setState({\n          action: action,\n          location: location\n        });\n      } else {\n        process.env.NODE_ENV !== \"production\" ? warning(false, 'Hash history cannot PUSH the same path; a new entry will not be added to the history stack') : void 0;\n        setState();\n      }\n    });\n  }\n\n  function replace(path, state) {\n    process.env.NODE_ENV !== \"production\" ? warning(state === undefined, 'Hash history cannot replace state; it is ignored') : void 0;\n    var action = 'REPLACE';\n    var location = createLocation(path, undefined, undefined, history.location);\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (!ok) return;\n      var path = createPath(location);\n      var encodedPath = encodePath(basename + path);\n      var hashChanged = getHashPath() !== encodedPath;\n\n      if (hashChanged) {\n        // We cannot tell if a hashchange was caused by a REPLACE, so we'd\n        // rather setState here and ignore the hashchange. The caveat here\n        // is that other hash histories in the page will consider it a POP.\n        ignorePath = path;\n        replaceHashPath(encodedPath);\n      }\n\n      var prevIndex = allPaths.indexOf(createPath(history.location));\n      if (prevIndex !== -1) allPaths[prevIndex] = path;\n      setState({\n        action: action,\n        location: location\n      });\n    });\n  }\n\n  function go(n) {\n    process.env.NODE_ENV !== \"production\" ? warning(canGoWithoutReload, 'Hash history go(n) causes a full page reload in this browser') : void 0;\n    globalHistory.go(n);\n  }\n\n  function goBack() {\n    go(-1);\n  }\n\n  function goForward() {\n    go(1);\n  }\n\n  var listenerCount = 0;\n\n  function checkDOMListeners(delta) {\n    listenerCount += delta;\n\n    if (listenerCount === 1 && delta === 1) {\n      window.addEventListener(HashChangeEvent$1, handleHashChange);\n    } else if (listenerCount === 0) {\n      window.removeEventListener(HashChangeEvent$1, handleHashChange);\n    }\n  }\n\n  var isBlocked = false;\n\n  function block(prompt) {\n    if (prompt === void 0) {\n      prompt = false;\n    }\n\n    var unblock = transitionManager.setPrompt(prompt);\n\n    if (!isBlocked) {\n      checkDOMListeners(1);\n      isBlocked = true;\n    }\n\n    return function () {\n      if (isBlocked) {\n        isBlocked = false;\n        checkDOMListeners(-1);\n      }\n\n      return unblock();\n    };\n  }\n\n  function listen(listener) {\n    var unlisten = transitionManager.appendListener(listener);\n    checkDOMListeners(1);\n    return function () {\n      checkDOMListeners(-1);\n      unlisten();\n    };\n  }\n\n  var history = {\n    length: globalHistory.length,\n    action: 'POP',\n    location: initialLocation,\n    createHref: createHref,\n    push: push,\n    replace: replace,\n    go: go,\n    goBack: goBack,\n    goForward: goForward,\n    block: block,\n    listen: listen\n  };\n  return history;\n}\n\nfunction clamp(n, lowerBound, upperBound) {\n  return Math.min(Math.max(n, lowerBound), upperBound);\n}\n/**\n * Creates a history object that stores locations in memory.\n */\n\n\nfunction createMemoryHistory(props) {\n  if (props === void 0) {\n    props = {};\n  }\n\n  var _props = props,\n      getUserConfirmation = _props.getUserConfirmation,\n      _props$initialEntries = _props.initialEntries,\n      initialEntries = _props$initialEntries === void 0 ? ['/'] : _props$initialEntries,\n      _props$initialIndex = _props.initialIndex,\n      initialIndex = _props$initialIndex === void 0 ? 0 : _props$initialIndex,\n      _props$keyLength = _props.keyLength,\n      keyLength = _props$keyLength === void 0 ? 6 : _props$keyLength;\n  var transitionManager = createTransitionManager();\n\n  function setState(nextState) {\n    _extends(history, nextState);\n\n    history.length = history.entries.length;\n    transitionManager.notifyListeners(history.location, history.action);\n  }\n\n  function createKey() {\n    return Math.random().toString(36).substr(2, keyLength);\n  }\n\n  var index = clamp(initialIndex, 0, initialEntries.length - 1);\n  var entries = initialEntries.map(function (entry) {\n    return typeof entry === 'string' ? createLocation(entry, undefined, createKey()) : createLocation(entry, undefined, entry.key || createKey());\n  }); // Public interface\n\n  var createHref = createPath;\n\n  function push(path, state) {\n    process.env.NODE_ENV !== \"production\" ? warning(!(typeof path === 'object' && path.state !== undefined && state !== undefined), 'You should avoid providing a 2nd state argument to push when the 1st ' + 'argument is a location-like object that already has state; it is ignored') : void 0;\n    var action = 'PUSH';\n    var location = createLocation(path, state, createKey(), history.location);\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (!ok) return;\n      var prevIndex = history.index;\n      var nextIndex = prevIndex + 1;\n      var nextEntries = history.entries.slice(0);\n\n      if (nextEntries.length > nextIndex) {\n        nextEntries.splice(nextIndex, nextEntries.length - nextIndex, location);\n      } else {\n        nextEntries.push(location);\n      }\n\n      setState({\n        action: action,\n        location: location,\n        index: nextIndex,\n        entries: nextEntries\n      });\n    });\n  }\n\n  function replace(path, state) {\n    process.env.NODE_ENV !== \"production\" ? warning(!(typeof path === 'object' && path.state !== undefined && state !== undefined), 'You should avoid providing a 2nd state argument to replace when the 1st ' + 'argument is a location-like object that already has state; it is ignored') : void 0;\n    var action = 'REPLACE';\n    var location = createLocation(path, state, createKey(), history.location);\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (!ok) return;\n      history.entries[history.index] = location;\n      setState({\n        action: action,\n        location: location\n      });\n    });\n  }\n\n  function go(n) {\n    var nextIndex = clamp(history.index + n, 0, history.entries.length - 1);\n    var action = 'POP';\n    var location = history.entries[nextIndex];\n    transitionManager.confirmTransitionTo(location, action, getUserConfirmation, function (ok) {\n      if (ok) {\n        setState({\n          action: action,\n          location: location,\n          index: nextIndex\n        });\n      } else {\n        // Mimic the behavior of DOM histories by\n        // causing a render after a cancelled POP.\n        setState();\n      }\n    });\n  }\n\n  function goBack() {\n    go(-1);\n  }\n\n  function goForward() {\n    go(1);\n  }\n\n  function canGo(n) {\n    var nextIndex = history.index + n;\n    return nextIndex >= 0 && nextIndex < history.entries.length;\n  }\n\n  function block(prompt) {\n    if (prompt === void 0) {\n      prompt = false;\n    }\n\n    return transitionManager.setPrompt(prompt);\n  }\n\n  function listen(listener) {\n    return transitionManager.appendListener(listener);\n  }\n\n  var history = {\n    length: entries.length,\n    action: 'POP',\n    location: entries[index],\n    index: index,\n    entries: entries,\n    createHref: createHref,\n    push: push,\n    replace: replace,\n    go: go,\n    goBack: goBack,\n    goForward: goForward,\n    canGo: canGo,\n    block: block,\n    listen: listen\n  };\n  return history;\n}\n\nexport { createBrowserHistory, createHashHistory, createMemoryHistory, createLocation, locationsAreEqual, parsePath, createPath };\n","var isProduction = process.env.NODE_ENV === 'production';\nvar prefix = 'Invariant failed';\nfunction invariant(condition, message) {\n    if (condition) {\n        return;\n    }\n    if (isProduction) {\n        throw new Error(prefix);\n    }\n    throw new Error(prefix + \": \" + (message || ''));\n}\n\nexport default invariant;\n","var g;\n\n// This works in non-strict mode\ng = (function() {\n\treturn this;\n})();\n\ntry {\n\t// This works if eval is allowed (see CSP)\n\tg = g || new Function(\"return this\")();\n} catch (e) {\n\t// This works if the window reference is available\n\tif (typeof window === \"object\") g = window;\n}\n\n// g can still be undefined, but nothing to do about it...\n// We return undefined, instead of nothing here, so it's\n// easier to handle this case. if(!global) { ...}\n\nmodule.exports = g;\n","import arrayWithHoles from \"./arrayWithHoles.js\";\nimport iterableToArrayLimit from \"./iterableToArrayLimit.js\";\nimport unsupportedIterableToArray from \"./unsupportedIterableToArray.js\";\nimport nonIterableRest from \"./nonIterableRest.js\";\nexport default function _slicedToArray(arr, i) {\n  return arrayWithHoles(arr) || iterableToArrayLimit(arr, i) || unsupportedIterableToArray(arr, i) || nonIterableRest();\n}","export default function _iterableToArrayLimit(arr, i) {\n  var _i = arr == null ? null : typeof Symbol !== \"undefined\" && arr[Symbol.iterator] || arr[\"@@iterator\"];\n\n  if (_i == null) return;\n  var _arr = [];\n  var _n = true;\n  var _d = false;\n\n  var _s, _e;\n\n  try {\n    for (_i = _i.call(arr); !(_n = (_s = _i.next()).done); _n = true) {\n      _arr.push(_s.value);\n\n      if (i && _arr.length === i) break;\n    }\n  } catch (err) {\n    _d = true;\n    _e = err;\n  } finally {\n    try {\n      if (!_n && _i[\"return\"] != null) _i[\"return\"]();\n    } finally {\n      if (_d) throw _e;\n    }\n  }\n\n  return _arr;\n}","// TODO v5: consider to make it private\nexport default function setRef(ref, value) {\n  if (typeof ref === 'function') {\n    ref(value);\n  } else if (ref) {\n    ref.current = value;\n  }\n}","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\nif (process.env.NODE_ENV !== 'production') {\n  var REACT_ELEMENT_TYPE = (typeof Symbol === 'function' &&\n    Symbol.for &&\n    Symbol.for('react.element')) ||\n    0xeac7;\n\n  var isValidElement = function(object) {\n    return typeof object === 'object' &&\n      object !== null &&\n      object.$$typeof === REACT_ELEMENT_TYPE;\n  };\n\n  // By explicitly using `prop-types` you are opting into new development behavior.\n  // http://fb.me/prop-types-in-prod\n  var throwOnDirectAccess = true;\n  module.exports = require('./factoryWithTypeCheckers')(isValidElement, throwOnDirectAccess);\n} else {\n  // By explicitly using `prop-types` you are opting into new production behavior.\n  // http://fb.me/prop-types-in-prod\n  module.exports = require('./factoryWithThrowingShims')();\n}\n","import React from \"react\";\nimport { Router } from \"react-router\";\nimport { createBrowserHistory as createHistory } from \"history\";\nimport PropTypes from \"prop-types\";\nimport warning from \"tiny-warning\";\n\n/**\n * The public API for a <Router> that uses HTML5 history.\n */\nclass BrowserRouter extends React.Component {\n  history = createHistory(this.props);\n\n  render() {\n    return <Router history={this.history} children={this.props.children} />;\n  }\n}\n\nif (__DEV__) {\n  BrowserRouter.propTypes = {\n    basename: PropTypes.string,\n    children: PropTypes.node,\n    forceRefresh: PropTypes.bool,\n    getUserConfirmation: PropTypes.func,\n    keyLength: PropTypes.number\n  };\n\n  BrowserRouter.prototype.componentDidMount = function() {\n    warning(\n      !this.props.history,\n      \"<BrowserRouter> ignores the history prop. To use a custom history, \" +\n        \"use `import { Router }` instead of `import { BrowserRouter as Router }`.\"\n    );\n  };\n}\n\nexport default BrowserRouter;\n","import React from \"react\";\nimport { Router } from \"react-router\";\nimport { createHashHistory as createHistory } from \"history\";\nimport PropTypes from \"prop-types\";\nimport warning from \"tiny-warning\";\n\n/**\n * The public API for a <Router> that uses window.location.hash.\n */\nclass HashRouter extends React.Component {\n  history = createHistory(this.props);\n\n  render() {\n    return <Router history={this.history} children={this.props.children} />;\n  }\n}\n\nif (__DEV__) {\n  HashRouter.propTypes = {\n    basename: PropTypes.string,\n    children: PropTypes.node,\n    getUserConfirmation: PropTypes.func,\n    hashType: PropTypes.oneOf([\"hashbang\", \"noslash\", \"slash\"])\n  };\n\n  HashRouter.prototype.componentDidMount = function() {\n    warning(\n      !this.props.history,\n      \"<HashRouter> ignores the history prop. To use a custom history, \" +\n        \"use `import { Router }` instead of `import { HashRouter as Router }`.\"\n    );\n  };\n}\n\nexport default HashRouter;\n","import { createLocation } from \"history\";\n\nexport const resolveToLocation = (to, currentLocation) =>\n  typeof to === \"function\" ? to(currentLocation) : to;\n\nexport const normalizeToLocation = (to, currentLocation) => {\n  return typeof to === \"string\"\n    ? createLocation(to, null, null, currentLocation)\n    : to;\n};\n","import React from \"react\";\nimport { __RouterContext as RouterContext } from \"react-router\";\nimport { createPath } from 'history';\nimport PropTypes from \"prop-types\";\nimport invariant from \"tiny-invariant\";\nimport {\n  resolveToLocation,\n  normalizeToLocation\n} from \"./utils/locationUtils.js\";\n\n// React 15 compat\nconst forwardRefShim = C => C;\nlet { forwardRef } = React;\nif (typeof forwardRef === \"undefined\") {\n  forwardRef = forwardRefShim;\n}\n\nfunction isModifiedEvent(event) {\n  return !!(event.metaKey || event.altKey || event.ctrlKey || event.shiftKey);\n}\n\nconst LinkAnchor = forwardRef(\n  (\n    {\n      innerRef, // TODO: deprecate\n      navigate,\n      onClick,\n      ...rest\n    },\n    forwardedRef\n  ) => {\n    const { target } = rest;\n\n    let props = {\n      ...rest,\n      onClick: event => {\n        try {\n          if (onClick) onClick(event);\n        } catch (ex) {\n          event.preventDefault();\n          throw ex;\n        }\n\n        if (\n          !event.defaultPrevented && // onClick prevented default\n          event.button === 0 && // ignore everything but left clicks\n          (!target || target === \"_self\") && // let browser handle \"target=_blank\" etc.\n          !isModifiedEvent(event) // ignore clicks with modifier keys\n        ) {\n          event.preventDefault();\n          navigate();\n        }\n      }\n    };\n\n    // React 15 compat\n    if (forwardRefShim !== forwardRef) {\n      props.ref = forwardedRef || innerRef;\n    } else {\n      props.ref = innerRef;\n    }\n\n    /* eslint-disable-next-line jsx-a11y/anchor-has-content */\n    return <a {...props} />;\n  }\n);\n\nif (__DEV__) {\n  LinkAnchor.displayName = \"LinkAnchor\";\n}\n\n/**\n * The public API for rendering a history-aware <a>.\n */\nconst Link = forwardRef(\n  (\n    {\n      component = LinkAnchor,\n      replace,\n      to,\n      innerRef, // TODO: deprecate\n      ...rest\n    },\n    forwardedRef\n  ) => {\n    return (\n      <RouterContext.Consumer>\n        {context => {\n          invariant(context, \"You should not use <Link> outside a <Router>\");\n\n          const { history } = context;\n\n          const location = normalizeToLocation(\n            resolveToLocation(to, context.location),\n            context.location\n          );\n\n          const href = location ? history.createHref(location) : \"\";\n          const props = {\n            ...rest,\n            href,\n            navigate() {\n              const location = resolveToLocation(to, context.location);\n              const isDuplicateNavigation = createPath(context.location) === createPath(normalizeToLocation(location));\n              const method = (replace || isDuplicateNavigation) ? history.replace : history.push;\n\n              method(location);\n            }\n          };\n\n          // React 15 compat\n          if (forwardRefShim !== forwardRef) {\n            props.ref = forwardedRef || innerRef;\n          } else {\n            props.innerRef = innerRef;\n          }\n\n          return React.createElement(component, props);\n        }}\n      </RouterContext.Consumer>\n    );\n  }\n);\n\nif (__DEV__) {\n  const toType = PropTypes.oneOfType([\n    PropTypes.string,\n    PropTypes.object,\n    PropTypes.func\n  ]);\n  const refType = PropTypes.oneOfType([\n    PropTypes.string,\n    PropTypes.func,\n    PropTypes.shape({ current: PropTypes.any })\n  ]);\n\n  Link.displayName = \"Link\";\n\n  Link.propTypes = {\n    innerRef: refType,\n    onClick: PropTypes.func,\n    replace: PropTypes.bool,\n    target: PropTypes.string,\n    to: toType.isRequired\n  };\n}\n\nexport default Link;\n","import React from \"react\";\nimport { __RouterContext as RouterContext, matchPath } from \"react-router\";\nimport PropTypes from \"prop-types\";\nimport invariant from \"tiny-invariant\";\nimport Link from \"./Link.js\";\nimport {\n  resolveToLocation,\n  normalizeToLocation\n} from \"./utils/locationUtils.js\";\n\n// React 15 compat\nconst forwardRefShim = C => C;\nlet { forwardRef } = React;\nif (typeof forwardRef === \"undefined\") {\n  forwardRef = forwardRefShim;\n}\n\nfunction joinClassnames(...classnames) {\n  return classnames.filter(i => i).join(\" \");\n}\n\n/**\n * A <Link> wrapper that knows if it's \"active\" or not.\n */\nconst NavLink = forwardRef(\n  (\n    {\n      \"aria-current\": ariaCurrent = \"page\",\n      activeClassName = \"active\", // TODO: deprecate\n      activeStyle, // TODO: deprecate\n      className: classNameProp,\n      exact,\n      isActive: isActiveProp,\n      location: locationProp,\n      sensitive,\n      strict,\n      style: styleProp,\n      to,\n      innerRef, // TODO: deprecate\n      ...rest\n    },\n    forwardedRef\n  ) => {\n    return (\n      <RouterContext.Consumer>\n        {context => {\n          invariant(context, \"You should not use <NavLink> outside a <Router>\");\n\n          const currentLocation = locationProp || context.location;\n          const toLocation = normalizeToLocation(\n            resolveToLocation(to, currentLocation),\n            currentLocation\n          );\n          const { pathname: path } = toLocation;\n          // Regex taken from: https://github.com/pillarjs/path-to-regexp/blob/master/index.js#L202\n          const escapedPath =\n            path && path.replace(/([.+*?=^!:${}()[\\]|/\\\\])/g, \"\\\\$1\");\n\n          const match = escapedPath\n            ? matchPath(currentLocation.pathname, {\n                path: escapedPath,\n                exact,\n                sensitive,\n                strict\n              })\n            : null;\n          const isActive = !!(isActiveProp\n            ? isActiveProp(match, currentLocation)\n            : match);\n\n          let className =\n            typeof classNameProp === \"function\"\n              ? classNameProp(isActive)\n              : classNameProp;\n\n          let style =\n            typeof styleProp === \"function\" ? styleProp(isActive) : styleProp;\n\n          if (isActive) {\n            className = joinClassnames(className, activeClassName);\n            style = { ...style, ...activeStyle };\n          }\n\n          const props = {\n            \"aria-current\": (isActive && ariaCurrent) || null,\n            className,\n            style,\n            to: toLocation,\n            ...rest\n          };\n\n          // React 15 compat\n          if (forwardRefShim !== forwardRef) {\n            props.ref = forwardedRef || innerRef;\n          } else {\n            props.innerRef = innerRef;\n          }\n\n          return <Link {...props} />;\n        }}\n      </RouterContext.Consumer>\n    );\n  }\n);\n\nif (__DEV__) {\n  NavLink.displayName = \"NavLink\";\n\n  const ariaCurrentType = PropTypes.oneOf([\n    \"page\",\n    \"step\",\n    \"location\",\n    \"date\",\n    \"time\",\n    \"true\",\n    \"false\"\n  ]);\n\n  NavLink.propTypes = {\n    ...Link.propTypes,\n    \"aria-current\": ariaCurrentType,\n    activeClassName: PropTypes.string,\n    activeStyle: PropTypes.object,\n    className: PropTypes.oneOfType([PropTypes.string, PropTypes.func]),\n    exact: PropTypes.bool,\n    isActive: PropTypes.func,\n    location: PropTypes.object,\n    sensitive: PropTypes.bool,\n    strict: PropTypes.bool,\n    style: PropTypes.oneOfType([PropTypes.object, PropTypes.func])\n  };\n}\n\nexport default NavLink;\n","import { useTheme as useThemeWithoutDefault } from '@material-ui/styles';\nimport React from 'react';\nimport defaultTheme from './defaultTheme';\nexport default function useTheme() {\n  var theme = useThemeWithoutDefault() || defaultTheme;\n\n  if (process.env.NODE_ENV !== 'production') {\n    // eslint-disable-next-line react-hooks/rules-of-hooks\n    React.useDebugValue(theme);\n  }\n\n  return theme;\n}","'use strict';\n\nvar reactIs = require('react-is');\n\n/**\n * Copyright 2015, Yahoo! Inc.\n * Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.\n */\nvar REACT_STATICS = {\n  childContextTypes: true,\n  contextType: true,\n  contextTypes: true,\n  defaultProps: true,\n  displayName: true,\n  getDefaultProps: true,\n  getDerivedStateFromError: true,\n  getDerivedStateFromProps: true,\n  mixins: true,\n  propTypes: true,\n  type: true\n};\nvar KNOWN_STATICS = {\n  name: true,\n  length: true,\n  prototype: true,\n  caller: true,\n  callee: true,\n  arguments: true,\n  arity: true\n};\nvar FORWARD_REF_STATICS = {\n  '$$typeof': true,\n  render: true,\n  defaultProps: true,\n  displayName: true,\n  propTypes: true\n};\nvar MEMO_STATICS = {\n  '$$typeof': true,\n  compare: true,\n  defaultProps: true,\n  displayName: true,\n  propTypes: true,\n  type: true\n};\nvar TYPE_STATICS = {};\nTYPE_STATICS[reactIs.ForwardRef] = FORWARD_REF_STATICS;\nTYPE_STATICS[reactIs.Memo] = MEMO_STATICS;\n\nfunction getStatics(component) {\n  // React v16.11 and below\n  if (reactIs.isMemo(component)) {\n    return MEMO_STATICS;\n  } // React v16.12 and above\n\n\n  return TYPE_STATICS[component['$$typeof']] || REACT_STATICS;\n}\n\nvar defineProperty = Object.defineProperty;\nvar getOwnPropertyNames = Object.getOwnPropertyNames;\nvar getOwnPropertySymbols = Object.getOwnPropertySymbols;\nvar getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\nvar getPrototypeOf = Object.getPrototypeOf;\nvar objectPrototype = Object.prototype;\nfunction hoistNonReactStatics(targetComponent, sourceComponent, blacklist) {\n  if (typeof sourceComponent !== 'string') {\n    // don't hoist over string (html) components\n    if (objectPrototype) {\n      var inheritedComponent = getPrototypeOf(sourceComponent);\n\n      if (inheritedComponent && inheritedComponent !== objectPrototype) {\n        hoistNonReactStatics(targetComponent, inheritedComponent, blacklist);\n      }\n    }\n\n    var keys = getOwnPropertyNames(sourceComponent);\n\n    if (getOwnPropertySymbols) {\n      keys = keys.concat(getOwnPropertySymbols(sourceComponent));\n    }\n\n    var targetStatics = getStatics(targetComponent);\n    var sourceStatics = getStatics(sourceComponent);\n\n    for (var i = 0; i < keys.length; ++i) {\n      var key = keys[i];\n\n      if (!KNOWN_STATICS[key] && !(blacklist && blacklist[key]) && !(sourceStatics && sourceStatics[key]) && !(targetStatics && targetStatics[key])) {\n        var descriptor = getOwnPropertyDescriptor(sourceComponent, key);\n\n        try {\n          // Avoid failures from read-only properties\n          defineProperty(targetComponent, key, descriptor);\n        } catch (e) {}\n      }\n    }\n  }\n\n  return targetComponent;\n}\n\nmodule.exports = hoistNonReactStatics;\n","import * as React from 'react';\nvar useEnhancedEffect = typeof window !== 'undefined' ? React.useLayoutEffect : React.useEffect;\n/**\n * https://github.com/facebook/react/issues/14099#issuecomment-440013892\n *\n * @param {function} fn\n */\n\nexport default function useEventCallback(fn) {\n  var ref = React.useRef(fn);\n  useEnhancedEffect(function () {\n    ref.current = fn;\n  });\n  return React.useCallback(function () {\n    return (0, ref.current).apply(void 0, arguments);\n  }, []);\n}","'use strict';\n\nvar isArray = Array.isArray;\nvar keyList = Object.keys;\nvar hasProp = Object.prototype.hasOwnProperty;\nvar hasElementType = typeof Element !== 'undefined';\n\nfunction equal(a, b) {\n  // fast-deep-equal index.js 2.0.1\n  if (a === b) return true;\n\n  if (a && b && typeof a == 'object' && typeof b == 'object') {\n    var arrA = isArray(a)\n      , arrB = isArray(b)\n      , i\n      , length\n      , key;\n\n    if (arrA && arrB) {\n      length = a.length;\n      if (length != b.length) return false;\n      for (i = length; i-- !== 0;)\n        if (!equal(a[i], b[i])) return false;\n      return true;\n    }\n\n    if (arrA != arrB) return false;\n\n    var dateA = a instanceof Date\n      , dateB = b instanceof Date;\n    if (dateA != dateB) return false;\n    if (dateA && dateB) return a.getTime() == b.getTime();\n\n    var regexpA = a instanceof RegExp\n      , regexpB = b instanceof RegExp;\n    if (regexpA != regexpB) return false;\n    if (regexpA && regexpB) return a.toString() == b.toString();\n\n    var keys = keyList(a);\n    length = keys.length;\n\n    if (length !== keyList(b).length)\n      return false;\n\n    for (i = length; i-- !== 0;)\n      if (!hasProp.call(b, keys[i])) return false;\n    // end fast-deep-equal\n\n    // start react-fast-compare\n    // custom handling for DOM elements\n    if (hasElementType && a instanceof Element && b instanceof Element)\n      return a === b;\n\n    // custom handling for React\n    for (i = length; i-- !== 0;) {\n      key = keys[i];\n      if (key === '_owner' && a.$$typeof) {\n        // React-specific: avoid traversing React elements' _owner.\n        //  _owner contains circular references\n        // and is not needed when comparing the actual elements (and not their owners)\n        // .$$typeof and ._store on just reasonable markers of a react element\n        continue;\n      } else {\n        // all other properties should be traversed as usual\n        if (!equal(a[key], b[key])) return false;\n      }\n    }\n    // end react-fast-compare\n\n    // fast-deep-equal index.js 2.0.1\n    return true;\n  }\n\n  return a !== a && b !== b;\n}\n// end fast-deep-equal\n\nmodule.exports = function exportedEqual(a, b) {\n  try {\n    return equal(a, b);\n  } catch (error) {\n    if ((error.message && error.message.match(/stack|recursion/i)) || (error.number === -2146828260)) {\n      // warn on circular references, don't crash\n      // browsers give this different errors name and messages:\n      // chrome/safari: \"RangeError\", \"Maximum call stack size exceeded\"\n      // firefox: \"InternalError\", too much recursion\"\n      // edge: \"Error\", \"Out of stack space\"\n      console.warn('Warning: react-fast-compare does not handle circular references.', error.name, error.message);\n      return false;\n    }\n    // some other error. we should definitely know about these\n    throw error;\n  }\n};\n","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { getCrypto, getMsCrypto, isIE } from \"./EnvUtils\";\r\nimport { dateNow } from \"./HelperFuncs\";\r\nvar UInt32Mask = 0x100000000;\r\nvar MaxUInt32 = 0xffffffff;\r\n// MWC based Random generator (for IE)\r\nvar _mwcSeeded = false;\r\nvar _mwcW = 123456789;\r\nvar _mwcZ = 987654321;\r\n// Takes any integer\r\nfunction _mwcSeed(seedValue) {\r\n    if (seedValue < 0) {\r\n        // Make sure we end up with a positive number and not -ve one.\r\n        seedValue >>>= 0;\r\n    }\r\n    _mwcW = (123456789 + seedValue) & MaxUInt32;\r\n    _mwcZ = (987654321 - seedValue) & MaxUInt32;\r\n    _mwcSeeded = true;\r\n}\r\nfunction _autoSeedMwc() {\r\n    // Simple initialization using default Math.random() - So we inherit any entropy from the browser\r\n    // and bitwise XOR with the current milliseconds\r\n    try {\r\n        var now = dateNow() & 0x7fffffff;\r\n        _mwcSeed(((Math.random() * UInt32Mask) ^ now) + now);\r\n    }\r\n    catch (e) {\r\n        // Don't crash if something goes wrong\r\n    }\r\n}\r\n/**\r\n * Generate a random value between 0 and maxValue, max value should be limited to a 32-bit maximum.\r\n * So maxValue(16) will produce a number from 0..16 (range of 17)\r\n * @param maxValue\r\n */\r\nexport function randomValue(maxValue) {\r\n    if (maxValue > 0) {\r\n        return Math.floor((random32() / MaxUInt32) * (maxValue + 1)) >>> 0;\r\n    }\r\n    return 0;\r\n}\r\n/**\r\n * generate a random 32-bit number (0x000000..0xFFFFFFFF) or (-0x80000000..0x7FFFFFFF), defaults un-unsigned.\r\n * @param signed - True to return a signed 32-bit number (-0x80000000..0x7FFFFFFF) otherwise an unsigned one (0x000000..0xFFFFFFFF)\r\n */\r\nexport function random32(signed) {\r\n    var value;\r\n    var c = getCrypto() || getMsCrypto();\r\n    if (c && c.getRandomValues) {\r\n        // Make sure the number is converted into the specified range (-0x80000000..0x7FFFFFFF)\r\n        value = c.getRandomValues(new Uint32Array(1))[0] & MaxUInt32;\r\n    }\r\n    else if (isIE()) {\r\n        // For IE 6, 7, 8 (especially on XP) Math.random is not very random\r\n        if (!_mwcSeeded) {\r\n            // Set the seed for the Mwc algorithm\r\n            _autoSeedMwc();\r\n        }\r\n        // Don't use Math.random for IE\r\n        // Make sure the number is converted into the specified range (-0x80000000..0x7FFFFFFF)\r\n        value = mwcRandom32() & MaxUInt32;\r\n    }\r\n    else {\r\n        // Make sure the number is converted into the specified range (-0x80000000..0x7FFFFFFF)\r\n        value = Math.floor((UInt32Mask * Math.random()) | 0);\r\n    }\r\n    if (!signed) {\r\n        // Make sure we end up with a positive number and not -ve one.\r\n        value >>>= 0;\r\n    }\r\n    return value;\r\n}\r\n/**\r\n * Seed the MWC random number generator with the specified seed or a random value\r\n * @param value - optional the number to used as the seed, if undefined, null or zero a random value will be chosen\r\n */\r\nexport function mwcRandomSeed(value) {\r\n    if (!value) {\r\n        _autoSeedMwc();\r\n    }\r\n    else {\r\n        _mwcSeed(value);\r\n    }\r\n}\r\n/**\r\n * Generate a random 32-bit number between (0x000000..0xFFFFFFFF) or (-0x80000000..0x7FFFFFFF), using MWC (Multiply with carry)\r\n * instead of Math.random() defaults to un-signed.\r\n * Used as a replacement random generator for IE to avoid issues with older IE instances.\r\n * @param signed - True to return a signed 32-bit number (-0x80000000..0x7FFFFFFF) otherwise an unsigned one (0x000000..0xFFFFFFFF)\r\n */\r\nexport function mwcRandom32(signed) {\r\n    _mwcZ = (36969 * (_mwcZ & 0xFFFF) + (_mwcZ >> 16)) & MaxUInt32;\r\n    _mwcW = (18000 * (_mwcW & 0xFFFF) + (_mwcW >> 16)) & MaxUInt32;\r\n    var value = (((_mwcZ << 16) + (_mwcW & 0xFFFF)) >>> 0) & MaxUInt32 | 0;\r\n    if (!signed) {\r\n        // Make sure we end up with a positive number and not -ve one.\r\n        value >>>= 0;\r\n    }\r\n    return value;\r\n}\r\n//# sourceMappingURL=RandomHelper.js.map","var freeGlobal = require('./_freeGlobal');\n\n/** Detect free variable `self`. */\nvar freeSelf = typeof self == 'object' && self && self.Object === Object && self;\n\n/** Used as a reference to the global object. */\nvar root = freeGlobal || freeSelf || Function('return this')();\n\nmodule.exports = root;\n","import unsupportedIterableToArray from \"@babel/runtime/helpers/esm/unsupportedIterableToArray\";\nexport default function _createForOfIteratorHelper(o, allowArrayLike) {\n  var it;\n\n  if (typeof Symbol === \"undefined\" || o[Symbol.iterator] == null) {\n    if (Array.isArray(o) || (it = unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === \"number\") {\n      if (it) o = it;\n      var i = 0;\n\n      var F = function F() {};\n\n      return {\n        s: F,\n        n: function n() {\n          if (i >= o.length) return {\n            done: true\n          };\n          return {\n            done: false,\n            value: o[i++]\n          };\n        },\n        e: function e(_e) {\n          throw _e;\n        },\n        f: F\n      };\n    }\n\n    throw new TypeError(\"Invalid attempt to iterate non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\");\n  }\n\n  var normalCompletion = true,\n      didErr = false,\n      err;\n  return {\n    s: function s() {\n      it = o[Symbol.iterator]();\n    },\n    n: function n() {\n      var step = it.next();\n      normalCompletion = step.done;\n      return step;\n    },\n    e: function e(_e2) {\n      didErr = true;\n      err = _e2;\n    },\n    f: function f() {\n      try {\n        if (!normalCompletion && it[\"return\"] != null) it[\"return\"]();\n      } finally {\n        if (didErr) throw err;\n      }\n    }\n  };\n}","import freeGlobal from './_freeGlobal.js';\n\n/** Detect free variable `exports`. */\nvar freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;\n\n/** Detect free variable `module`. */\nvar freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;\n\n/** Detect the popular CommonJS extension `module.exports`. */\nvar moduleExports = freeModule && freeModule.exports === freeExports;\n\n/** Detect free variable `process` from Node.js. */\nvar freeProcess = moduleExports && freeGlobal.process;\n\n/** Used to access faster Node.js helpers. */\nvar nodeUtil = (function() {\n  try {\n    // Use `util.types` for Node.js 10+.\n    var types = freeModule && freeModule.require && freeModule.require('util').types;\n\n    if (types) {\n      return types;\n    }\n\n    // Legacy `process.binding('util')` for Node.js < 10.\n    return freeProcess && freeProcess.binding && freeProcess.binding('util');\n  } catch (e) {}\n}());\n\nexport default nodeUtil;\n","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n\"use strict\";\r\nimport { doPerf } from \"./PerfManager\";\r\nimport { LoggingSeverity, _InternalMessageId } from \"../JavaScriptSDK.Enums/LoggingEnums\";\r\nimport { isFunction } from \"./HelperFuncs\";\r\nimport { dumpObj } from \"./EnvUtils\";\r\nvar TelemetryPluginChain = /** @class */ (function () {\r\n    function TelemetryPluginChain(plugin, defItemCtx) {\r\n        var _self = this;\r\n        var _nextProxy = null;\r\n        var _hasProcessTelemetry = isFunction(plugin.processTelemetry);\r\n        var _hasSetNext = isFunction(plugin.setNextPlugin);\r\n        _self._hasRun = false;\r\n        _self.getPlugin = function () {\r\n            return plugin;\r\n        };\r\n        _self.getNext = function () {\r\n            return _nextProxy;\r\n        };\r\n        _self.setNext = function (nextPlugin) {\r\n            _nextProxy = nextPlugin;\r\n        };\r\n        _self.processTelemetry = function (env, itemCtx) {\r\n            if (!itemCtx) {\r\n                // Looks like a plugin didn't pass the (optional) context, so restore to the default\r\n                itemCtx = defItemCtx;\r\n            }\r\n            var identifier = plugin ? plugin.identifier : \"TelemetryPluginChain\";\r\n            doPerf(itemCtx ? itemCtx.core() : null, function () { return identifier + \":processTelemetry\"; }, function () {\r\n                if (plugin && _hasProcessTelemetry) {\r\n                    _self._hasRun = true;\r\n                    try {\r\n                        // Ensure that we keep the context in sync (for processNext()), just in case a plugin\r\n                        // doesn't calls processTelemetry() instead of itemContext.processNext() or some\r\n                        // other form of error occurred\r\n                        itemCtx.setNext(_nextProxy);\r\n                        if (_hasSetNext) {\r\n                            // Backward compatibility setting the next plugin on the instance\r\n                            plugin.setNextPlugin(_nextProxy);\r\n                        }\r\n                        // Set a flag on the next plugin so we know if it was attempted to be executed\r\n                        _nextProxy && (_nextProxy._hasRun = false);\r\n                        plugin.processTelemetry(env, itemCtx);\r\n                    }\r\n                    catch (error) {\r\n                        var hasRun = _nextProxy && _nextProxy._hasRun;\r\n                        if (!_nextProxy || !hasRun) {\r\n                            // Either we have no next plugin or the current one did not attempt to call the next plugin\r\n                            // Which means the current one is the root of the failure so log/report this failure\r\n                            itemCtx.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.PluginException, \"Plugin [\" + plugin.identifier + \"] failed during processTelemetry - \" + dumpObj(error));\r\n                        }\r\n                        if (_nextProxy && !hasRun) {\r\n                            // As part of the failure the current plugin did not attempt to call the next plugin in the cahin\r\n                            // So rather than leave the pipeline dead in the water we call the next plugin\r\n                            _nextProxy.processTelemetry(env, itemCtx);\r\n                        }\r\n                    }\r\n                }\r\n                else if (_nextProxy) {\r\n                    _self._hasRun = true;\r\n                    // The underlying plugin is either not defined or does not have a processTelemetry implementation\r\n                    // so we still want the next plugin to be executed.\r\n                    _nextProxy.processTelemetry(env, itemCtx);\r\n                }\r\n            }, function () { return ({ item: env }); }, !(env.sync));\r\n        };\r\n    }\r\n    return TelemetryPluginChain;\r\n}());\r\nexport { TelemetryPluginChain };\r\n//# sourceMappingURL=TelemetryPluginChain.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n\"use strict\";\r\nimport { safeGetLogger } from \"./DiagnosticLogger\";\r\nimport { TelemetryPluginChain } from \"./TelemetryPluginChain\";\r\nimport { arrForEach, isFunction, isNullOrUndefined, isUndefined } from \"./HelperFuncs\";\r\n/**\r\n * Creates the instance execution chain for the plugins\r\n */\r\nfunction _createProxyChain(plugins, itemCtx) {\r\n    var proxies = [];\r\n    if (plugins && plugins.length > 0) {\r\n        // Create the proxies and wire up the next plugin chain\r\n        var lastProxy = null;\r\n        for (var idx = 0; idx < plugins.length; idx++) {\r\n            var thePlugin = plugins[idx];\r\n            if (thePlugin && isFunction(thePlugin.processTelemetry)) {\r\n                // Only add plugins that are processors\r\n                var newProxy = new TelemetryPluginChain(thePlugin, itemCtx);\r\n                proxies.push(newProxy);\r\n                if (lastProxy) {\r\n                    // Set this new proxy as the next for the previous one\r\n                    lastProxy.setNext(newProxy);\r\n                }\r\n                lastProxy = newProxy;\r\n            }\r\n        }\r\n    }\r\n    return proxies.length > 0 ? proxies[0] : null;\r\n}\r\nfunction _copyProxyChain(proxy, itemCtx, startAt) {\r\n    var plugins = [];\r\n    var add = startAt ? false : true;\r\n    if (proxy) {\r\n        while (proxy) {\r\n            var thePlugin = proxy.getPlugin();\r\n            if (add || thePlugin === startAt) {\r\n                add = true;\r\n                plugins.push(thePlugin);\r\n            }\r\n            proxy = proxy.getNext();\r\n        }\r\n    }\r\n    if (!add) {\r\n        plugins.push(startAt);\r\n    }\r\n    return _createProxyChain(plugins, itemCtx);\r\n}\r\nfunction _copyPluginChain(srcPlugins, itemCtx, startAt) {\r\n    var plugins = srcPlugins;\r\n    var add = false;\r\n    if (startAt && srcPlugins) {\r\n        plugins = [];\r\n        arrForEach(srcPlugins, function (thePlugin) {\r\n            if (add || thePlugin === startAt) {\r\n                add = true;\r\n                plugins.push(thePlugin);\r\n            }\r\n        });\r\n    }\r\n    if (startAt && !add) {\r\n        if (!plugins) {\r\n            plugins = [];\r\n        }\r\n        plugins.push(startAt);\r\n    }\r\n    return _createProxyChain(plugins, itemCtx);\r\n}\r\nvar ProcessTelemetryContext = /** @class */ (function () {\r\n    /**\r\n     * Creates a new Telemetry Item context with the current config, core and plugin execution chain\r\n     * @param plugins - The plugin instances that will be executed\r\n     * @param config - The current config\r\n     * @param core - The current core instance\r\n     */\r\n    function ProcessTelemetryContext(plugins, config, core, startAt) {\r\n        var _self = this;\r\n        var _nextProxy = null; // Null == No next plugin\r\n        // There is no next element (null) vs not defined (undefined)\r\n        if (startAt !== null) {\r\n            if (plugins && isFunction(plugins.getPlugin)) {\r\n                // We have a proxy chain object\r\n                _nextProxy = _copyProxyChain(plugins, _self, startAt || plugins.getPlugin());\r\n            }\r\n            else {\r\n                // We just have an array\r\n                if (startAt) {\r\n                    _nextProxy = _copyPluginChain(plugins, _self, startAt);\r\n                }\r\n                else if (isUndefined(startAt)) {\r\n                    // Undefined means copy the existing chain\r\n                    _nextProxy = _createProxyChain(plugins, _self);\r\n                }\r\n            }\r\n        }\r\n        _self.core = function () {\r\n            return core;\r\n        };\r\n        _self.diagLog = function () {\r\n            return safeGetLogger(core, config);\r\n        };\r\n        _self.getCfg = function () {\r\n            return config;\r\n        };\r\n        _self.getExtCfg = function (identifier, defaultValue) {\r\n            if (defaultValue === void 0) { defaultValue = {}; }\r\n            var theConfig;\r\n            if (config) {\r\n                var extConfig = config.extensionConfig;\r\n                if (extConfig && identifier) {\r\n                    theConfig = extConfig[identifier];\r\n                }\r\n            }\r\n            return (theConfig ? theConfig : defaultValue);\r\n        };\r\n        _self.getConfig = function (identifier, field, defaultValue) {\r\n            if (defaultValue === void 0) { defaultValue = false; }\r\n            var theValue;\r\n            var extConfig = _self.getExtCfg(identifier, null);\r\n            if (extConfig && !isNullOrUndefined(extConfig[field])) {\r\n                theValue = extConfig[field];\r\n            }\r\n            else if (config && !isNullOrUndefined(config[field])) {\r\n                theValue = config[field];\r\n            }\r\n            return !isNullOrUndefined(theValue) ? theValue : defaultValue;\r\n        };\r\n        _self.hasNext = function () {\r\n            return _nextProxy != null;\r\n        };\r\n        _self.getNext = function () {\r\n            return _nextProxy;\r\n        };\r\n        _self.setNext = function (nextPlugin) {\r\n            _nextProxy = nextPlugin;\r\n        };\r\n        _self.processNext = function (env) {\r\n            var nextPlugin = _nextProxy;\r\n            if (nextPlugin) {\r\n                // Automatically move to the next plugin\r\n                _nextProxy = nextPlugin.getNext();\r\n                nextPlugin.processTelemetry(env, _self);\r\n            }\r\n        };\r\n        _self.createNew = function (plugins, startAt) {\r\n            if (plugins === void 0) { plugins = null; }\r\n            return new ProcessTelemetryContext(plugins || _nextProxy, config, core, startAt);\r\n        };\r\n    }\r\n    return ProcessTelemetryContext;\r\n}());\r\nexport { ProcessTelemetryContext };\r\n//# sourceMappingURL=ProcessTelemetryContext.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n\r\nimport {  ObjCreate, strShimFunction, strShimObject, strShimPrototype, strShimUndefined } from \"./Constants\";\r\n\r\ndeclare var globalThis: Window;\r\ndeclare var global: Window;\r\n\r\n/**\r\n * Returns the current global scope object, for a normal web page this will be the current\r\n * window, for a Web Worker this will be current worker global scope via \"self\". The internal \r\n * implementation returns the first available instance object in the following order\r\n * - globalThis (New standard)\r\n * - self (Will return the current window instance for supported browsers)\r\n * - window (fallback for older browser implementations)\r\n * - global (NodeJS standard)\r\n * - <null> (When all else fails)\r\n * While the return type is a Window for the normal case, not all environments will support all\r\n * of the properties or functions.\r\n */\r\n export function getGlobal(): Window {\r\n    if (typeof globalThis !== strShimUndefined && globalThis) {\r\n        return globalThis;\r\n    }\r\n\r\n    if (typeof self !== strShimUndefined && self) {\r\n        return self;\r\n    }\r\n\r\n    if (typeof window !== strShimUndefined && window) {\r\n        return window;\r\n    }\r\n\r\n    if (typeof global !== strShimUndefined && global) {\r\n        return global;\r\n    }\r\n\r\n    return null;\r\n}\r\n\r\nexport function throwTypeError(message: string): never {\r\n    throw new TypeError(message); \r\n}\r\n\r\n/**\r\n * Creates an object that has the specified prototype, and that optionally contains specified properties. This helper exists to avoid adding a polyfil\r\n * for older browsers that do not define Object.create eg. ES3 only, IE8 just in case any page checks for presence/absence of the prototype implementation.\r\n * Note: For consistency this will not use the Object.create implementation if it exists as this would cause a testing requirement to test with and without the implementations\r\n * @param obj Object to use as a prototype. May be null\r\n */\r\nexport function objCreateFn(obj: any): any {\r\n    var func = ObjCreate;\r\n    // Use build in Object.create\r\n    if (func) {\r\n        // Use Object create method if it exists\r\n        return func(obj); \r\n    }\r\n    if (obj == null) { \r\n        return {}; \r\n    }\r\n    var type = typeof obj;\r\n    if (type !== strShimObject && type !== strShimFunction) { \r\n        throwTypeError('Object prototype may only be an Object:' + obj); \r\n    }\r\n\r\n    function tmpFunc() {}\r\n    tmpFunc[strShimPrototype] = obj;\r\n\r\n    return new (tmpFunc as any)();    \r\n}\r\n\r\n","/**\n * Checks if `value` is classified as an `Array` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array, else `false`.\n * @example\n *\n * _.isArray([1, 2, 3]);\n * // => true\n *\n * _.isArray(document.body.children);\n * // => false\n *\n * _.isArray('abc');\n * // => false\n *\n * _.isArray(_.noop);\n * // => false\n */\nvar isArray = Array.isArray;\n\nmodule.exports = isArray;\n","/**\n * Based on Kendo UI Core expression code <https://github.com/telerik/kendo-ui-core#license-information>\n */\n'use strict'\n\nfunction Cache(maxSize) {\n  this._maxSize = maxSize\n  this.clear()\n}\nCache.prototype.clear = function () {\n  this._size = 0\n  this._values = Object.create(null)\n}\nCache.prototype.get = function (key) {\n  return this._values[key]\n}\nCache.prototype.set = function (key, value) {\n  this._size >= this._maxSize && this.clear()\n  if (!(key in this._values)) this._size++\n\n  return (this._values[key] = value)\n}\n\nvar SPLIT_REGEX = /[^.^\\]^[]+|(?=\\[\\]|\\.\\.)/g,\n  DIGIT_REGEX = /^\\d+$/,\n  LEAD_DIGIT_REGEX = /^\\d/,\n  SPEC_CHAR_REGEX = /[~`!#$%\\^&*+=\\-\\[\\]\\\\';,/{}|\\\\\":<>\\?]/g,\n  CLEAN_QUOTES_REGEX = /^\\s*(['\"]?)(.*?)(\\1)\\s*$/,\n  MAX_CACHE_SIZE = 512\n\nvar pathCache = new Cache(MAX_CACHE_SIZE),\n  setCache = new Cache(MAX_CACHE_SIZE),\n  getCache = new Cache(MAX_CACHE_SIZE)\n\nvar config\n\nmodule.exports = {\n  Cache: Cache,\n\n  split: split,\n\n  normalizePath: normalizePath,\n\n  setter: function (path) {\n    var parts = normalizePath(path)\n\n    return (\n      setCache.get(path) ||\n      setCache.set(path, function setter(obj, value) {\n        var index = 0\n        var len = parts.length\n        var data = obj\n\n        while (index < len - 1) {\n          var part = parts[index]\n          if (\n            part === '__proto__' ||\n            part === 'constructor' ||\n            part === 'prototype'\n          ) {\n            return obj\n          }\n\n          data = data[parts[index++]]\n        }\n        data[parts[index]] = value\n      })\n    )\n  },\n\n  getter: function (path, safe) {\n    var parts = normalizePath(path)\n    return (\n      getCache.get(path) ||\n      getCache.set(path, function getter(data) {\n        var index = 0,\n          len = parts.length\n        while (index < len) {\n          if (data != null || !safe) data = data[parts[index++]]\n          else return\n        }\n        return data\n      })\n    )\n  },\n\n  join: function (segments) {\n    return segments.reduce(function (path, part) {\n      return (\n        path +\n        (isQuoted(part) || DIGIT_REGEX.test(part)\n          ? '[' + part + ']'\n          : (path ? '.' : '') + part)\n      )\n    }, '')\n  },\n\n  forEach: function (path, cb, thisArg) {\n    forEach(Array.isArray(path) ? path : split(path), cb, thisArg)\n  },\n}\n\nfunction normalizePath(path) {\n  return (\n    pathCache.get(path) ||\n    pathCache.set(\n      path,\n      split(path).map(function (part) {\n        return part.replace(CLEAN_QUOTES_REGEX, '$2')\n      })\n    )\n  )\n}\n\nfunction split(path) {\n  return path.match(SPLIT_REGEX)\n}\n\nfunction forEach(parts, iter, thisArg) {\n  var len = parts.length,\n    part,\n    idx,\n    isArray,\n    isBracket\n\n  for (idx = 0; idx < len; idx++) {\n    part = parts[idx]\n\n    if (part) {\n      if (shouldBeQuoted(part)) {\n        part = '\"' + part + '\"'\n      }\n\n      isBracket = isQuoted(part)\n      isArray = !isBracket && /^\\d+$/.test(part)\n\n      iter.call(thisArg, part, isBracket, isArray, idx, parts)\n    }\n  }\n}\n\nfunction isQuoted(str) {\n  return (\n    typeof str === 'string' && str && [\"'\", '\"'].indexOf(str.charAt(0)) !== -1\n  )\n}\n\nfunction hasLeadingNumber(part) {\n  return part.match(LEAD_DIGIT_REGEX) && !part.match(DIGIT_REGEX)\n}\n\nfunction hasSpecialChars(part) {\n  return SPEC_CHAR_REGEX.test(part)\n}\n\nfunction shouldBeQuoted(part) {\n  return !isQuoted(part) && (hasLeadingNumber(part) || hasSpecialChars(part))\n}\n","import arrayWithoutHoles from \"./arrayWithoutHoles.js\";\nimport iterableToArray from \"./iterableToArray.js\";\nimport unsupportedIterableToArray from \"./unsupportedIterableToArray.js\";\nimport nonIterableSpread from \"./nonIterableSpread.js\";\nexport default function _toConsumableArray(arr) {\n  return arrayWithoutHoles(arr) || iterableToArray(arr) || unsupportedIterableToArray(arr) || nonIterableSpread();\n}","import arrayLikeToArray from \"./arrayLikeToArray.js\";\nexport default function _arrayWithoutHoles(arr) {\n  if (Array.isArray(arr)) return arrayLikeToArray(arr);\n}","export default function _nonIterableSpread() {\n  throw new TypeError(\"Invalid attempt to spread non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\");\n}","/**\n * Safe chained function\n *\n * Will only create a new function if needed,\n * otherwise will pass back existing functions or null.\n *\n * @param {function} functions to chain\n * @returns {function|null}\n */\nexport default function createChainedFunction() {\n  for (var _len = arguments.length, funcs = new Array(_len), _key = 0; _key < _len; _key++) {\n    funcs[_key] = arguments[_key];\n  }\n\n  return funcs.reduce(function (acc, func) {\n    if (func == null) {\n      return acc;\n    }\n\n    if (process.env.NODE_ENV !== 'production') {\n      if (typeof func !== 'function') {\n        console.error('Material-UI: Invalid Argument Type, must only provide functions, undefined, or null.');\n      }\n    }\n\n    return function chainedFunction() {\n      for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n        args[_key2] = arguments[_key2];\n      }\n\n      acc.apply(this, args);\n      func.apply(this, args);\n    };\n  }, function () {});\n}","import arrayWithoutHoles from \"@babel/runtime/helpers/esm/arrayWithoutHoles\";\nimport iterableToArray from \"@babel/runtime/helpers/esm/iterableToArray\";\nimport unsupportedIterableToArray from \"@babel/runtime/helpers/esm/unsupportedIterableToArray\";\nimport nonIterableSpread from \"@babel/runtime/helpers/esm/nonIterableSpread\";\nexport default function _toConsumableArray(arr) {\n  return arrayWithoutHoles(arr) || iterableToArray(arr) || unsupportedIterableToArray(arr) || nonIterableSpread();\n}","import arrayLikeToArray from \"@babel/runtime/helpers/esm/arrayLikeToArray\";\nexport default function _arrayWithoutHoles(arr) {\n  if (Array.isArray(arr)) return arrayLikeToArray(arr);\n}","export default function _iterableToArray(iter) {\n  if (typeof Symbol !== \"undefined\" && Symbol.iterator in Object(iter)) return Array.from(iter);\n}","export default function _nonIterableSpread() {\n  throw new TypeError(\"Invalid attempt to spread non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\");\n}","// ES6 Map\nvar map\ntry {\n  map = Map\n} catch (_) { }\nvar set\n\n// ES6 Set\ntry {\n  set = Set\n} catch (_) { }\n\nfunction baseClone (src, circulars, clones) {\n  // Null/undefined/functions/etc\n  if (!src || typeof src !== 'object' || typeof src === 'function') {\n    return src\n  }\n\n  // DOM Node\n  if (src.nodeType && 'cloneNode' in src) {\n    return src.cloneNode(true)\n  }\n\n  // Date\n  if (src instanceof Date) {\n    return new Date(src.getTime())\n  }\n\n  // RegExp\n  if (src instanceof RegExp) {\n    return new RegExp(src)\n  }\n\n  // Arrays\n  if (Array.isArray(src)) {\n    return src.map(clone)\n  }\n\n  // ES6 Maps\n  if (map && src instanceof map) {\n    return new Map(Array.from(src.entries()))\n  }\n\n  // ES6 Sets\n  if (set && src instanceof set) {\n    return new Set(Array.from(src.values()))\n  }\n\n  // Object\n  if (src instanceof Object) {\n    circulars.push(src)\n    var obj = Object.create(src)\n    clones.push(obj)\n    for (var key in src) {\n      var idx = circulars.findIndex(function (i) {\n        return i === src[key]\n      })\n      obj[key] = idx > -1 ? clones[idx] : baseClone(src[key], circulars, clones)\n    }\n    return obj\n  }\n\n  // ???\n  return src\n}\n\nexport default function clone (src) {\n  return baseClone(src, [], [])\n}\n","const toString = Object.prototype.toString;\nconst errorToString = Error.prototype.toString;\nconst regExpToString = RegExp.prototype.toString;\nconst symbolToString = typeof Symbol !== 'undefined' ? Symbol.prototype.toString : () => '';\nconst SYMBOL_REGEXP = /^Symbol\\((.*)\\)(.*)$/;\n\nfunction printNumber(val) {\n  if (val != +val) return 'NaN';\n  const isNegativeZero = val === 0 && 1 / val < 0;\n  return isNegativeZero ? '-0' : '' + val;\n}\n\nfunction printSimpleValue(val, quoteStrings = false) {\n  if (val == null || val === true || val === false) return '' + val;\n  const typeOf = typeof val;\n  if (typeOf === 'number') return printNumber(val);\n  if (typeOf === 'string') return quoteStrings ? `\"${val}\"` : val;\n  if (typeOf === 'function') return '[Function ' + (val.name || 'anonymous') + ']';\n  if (typeOf === 'symbol') return symbolToString.call(val).replace(SYMBOL_REGEXP, 'Symbol($1)');\n  const tag = toString.call(val).slice(8, -1);\n  if (tag === 'Date') return isNaN(val.getTime()) ? '' + val : val.toISOString(val);\n  if (tag === 'Error' || val instanceof Error) return '[' + errorToString.call(val) + ']';\n  if (tag === 'RegExp') return regExpToString.call(val);\n  return null;\n}\n\nexport default function printValue(value, quoteStrings) {\n  let result = printSimpleValue(value, quoteStrings);\n  if (result !== null) return result;\n  return JSON.stringify(value, function (key, value) {\n    let result = printSimpleValue(this[key], quoteStrings);\n    if (result !== null) return result;\n    return value;\n  }, 2);\n}","import printValue from './util/printValue';\nexport let mixed = {\n  default: '${path} is invalid',\n  required: '${path} is a required field',\n  oneOf: '${path} must be one of the following values: ${values}',\n  notOneOf: '${path} must not be one of the following values: ${values}',\n  notType: ({\n    path,\n    type,\n    value,\n    originalValue\n  }) => {\n    let isCast = originalValue != null && originalValue !== value;\n    let msg = `${path} must be a \\`${type}\\` type, ` + `but the final value was: \\`${printValue(value, true)}\\`` + (isCast ? ` (cast from the value \\`${printValue(originalValue, true)}\\`).` : '.');\n\n    if (value === null) {\n      msg += `\\n If \"null\" is intended as an empty value be sure to mark the schema as \\`.nullable()\\``;\n    }\n\n    return msg;\n  },\n  defined: '${path} must be defined'\n};\nexport let string = {\n  length: '${path} must be exactly ${length} characters',\n  min: '${path} must be at least ${min} characters',\n  max: '${path} must be at most ${max} characters',\n  matches: '${path} must match the following: \"${regex}\"',\n  email: '${path} must be a valid email',\n  url: '${path} must be a valid URL',\n  uuid: '${path} must be a valid UUID',\n  trim: '${path} must be a trimmed string',\n  lowercase: '${path} must be a lowercase string',\n  uppercase: '${path} must be a upper case string'\n};\nexport let number = {\n  min: '${path} must be greater than or equal to ${min}',\n  max: '${path} must be less than or equal to ${max}',\n  lessThan: '${path} must be less than ${less}',\n  moreThan: '${path} must be greater than ${more}',\n  positive: '${path} must be a positive number',\n  negative: '${path} must be a negative number',\n  integer: '${path} must be an integer'\n};\nexport let date = {\n  min: '${path} field must be later than ${min}',\n  max: '${path} field must be at earlier than ${max}'\n};\nexport let boolean = {\n  isValue: '${path} field must be ${value}'\n};\nexport let object = {\n  noUnknown: '${path} field has unspecified keys: ${unknown}'\n};\nexport let array = {\n  min: '${path} field must have at least ${min} items',\n  max: '${path} field must have less than or equal to ${max} items',\n  length: '${path} must have ${length} items'\n};\nexport default Object.assign(Object.create(null), {\n  mixed,\n  string,\n  number,\n  date,\n  object,\n  array,\n  boolean\n});","const isSchema = obj => obj && obj.__isYupSchema__;\n\nexport default isSchema;","import has from 'lodash/has';\nimport isSchema from './util/isSchema';\n\nclass Condition {\n  constructor(refs, options) {\n    this.fn = void 0;\n    this.refs = refs;\n    this.refs = refs;\n\n    if (typeof options === 'function') {\n      this.fn = options;\n      return;\n    }\n\n    if (!has(options, 'is')) throw new TypeError('`is:` is required for `when()` conditions');\n    if (!options.then && !options.otherwise) throw new TypeError('either `then:` or `otherwise:` is required for `when()` conditions');\n    let {\n      is,\n      then,\n      otherwise\n    } = options;\n    let check = typeof is === 'function' ? is : (...values) => values.every(value => value === is);\n\n    this.fn = function (...args) {\n      let options = args.pop();\n      let schema = args.pop();\n      let branch = check(...args) ? then : otherwise;\n      if (!branch) return undefined;\n      if (typeof branch === 'function') return branch(schema);\n      return schema.concat(branch.resolve(options));\n    };\n  }\n\n  resolve(base, options) {\n    let values = this.refs.map(ref => ref.getValue(options == null ? void 0 : options.value, options == null ? void 0 : options.parent, options == null ? void 0 : options.context));\n    let schema = this.fn.apply(base, values.concat(base, options));\n    if (schema === undefined || schema === base) return base;\n    if (!isSchema(schema)) throw new TypeError('conditions must return a schema object');\n    return schema.resolve(options);\n  }\n\n}\n\nexport default Condition;","import setPrototypeOf from \"@babel/runtime/helpers/esm/setPrototypeOf\";\nimport isNativeReflectConstruct from \"@babel/runtime/helpers/esm/isNativeReflectConstruct\";\nexport default function _construct(Parent, args, Class) {\n  if (isNativeReflectConstruct()) {\n    _construct = Reflect.construct;\n  } else {\n    _construct = function _construct(Parent, args, Class) {\n      var a = [null];\n      a.push.apply(a, args);\n      var Constructor = Function.bind.apply(Parent, a);\n      var instance = new Constructor();\n      if (Class) setPrototypeOf(instance, Class.prototype);\n      return instance;\n    };\n  }\n\n  return _construct.apply(null, arguments);\n}","import getPrototypeOf from \"@babel/runtime/helpers/esm/getPrototypeOf\";\nimport setPrototypeOf from \"@babel/runtime/helpers/esm/setPrototypeOf\";\nimport isNativeFunction from \"@babel/runtime/helpers/esm/isNativeFunction\";\nimport construct from \"@babel/runtime/helpers/esm/construct\";\nexport default function _wrapNativeSuper(Class) {\n  var _cache = typeof Map === \"function\" ? new Map() : undefined;\n\n  _wrapNativeSuper = function _wrapNativeSuper(Class) {\n    if (Class === null || !isNativeFunction(Class)) return Class;\n\n    if (typeof Class !== \"function\") {\n      throw new TypeError(\"Super expression must either be null or a function\");\n    }\n\n    if (typeof _cache !== \"undefined\") {\n      if (_cache.has(Class)) return _cache.get(Class);\n\n      _cache.set(Class, Wrapper);\n    }\n\n    function Wrapper() {\n      return construct(Class, arguments, getPrototypeOf(this).constructor);\n    }\n\n    Wrapper.prototype = Object.create(Class.prototype, {\n      constructor: {\n        value: Wrapper,\n        enumerable: false,\n        writable: true,\n        configurable: true\n      }\n    });\n    return setPrototypeOf(Wrapper, Class);\n  };\n\n  return _wrapNativeSuper(Class);\n}","export default function _isNativeFunction(fn) {\n  return Function.toString.call(fn).indexOf(\"[native code]\") !== -1;\n}","export default function toArray(value) {\n  return value == null ? [] : [].concat(value);\n}","function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }\n\nimport printValue from './util/printValue';\nimport toArray from './util/toArray';\nlet strReg = /\\$\\{\\s*(\\w+)\\s*\\}/g;\nexport default class ValidationError extends Error {\n  static formatError(message, params) {\n    const path = params.label || params.path || 'this';\n    if (path !== params.path) params = _extends({}, params, {\n      path\n    });\n    if (typeof message === 'string') return message.replace(strReg, (_, key) => printValue(params[key]));\n    if (typeof message === 'function') return message(params);\n    return message;\n  }\n\n  static isError(err) {\n    return err && err.name === 'ValidationError';\n  }\n\n  constructor(errorOrErrors, value, field, type) {\n    super();\n    this.value = void 0;\n    this.path = void 0;\n    this.type = void 0;\n    this.errors = void 0;\n    this.params = void 0;\n    this.inner = void 0;\n    this.name = 'ValidationError';\n    this.value = value;\n    this.path = field;\n    this.type = type;\n    this.errors = [];\n    this.inner = [];\n    toArray(errorOrErrors).forEach(err => {\n      if (ValidationError.isError(err)) {\n        this.errors.push(...err.errors);\n        this.inner = this.inner.concat(err.inner.length ? err.inner : err);\n      } else {\n        this.errors.push(err);\n      }\n    });\n    this.message = this.errors.length > 1 ? `${this.errors.length} errors occurred` : this.errors[0];\n    if (Error.captureStackTrace) Error.captureStackTrace(this, ValidationError);\n  }\n\n}","import ValidationError from '../ValidationError';\n\nconst once = cb => {\n  let fired = false;\n  return (...args) => {\n    if (fired) return;\n    fired = true;\n    cb(...args);\n  };\n};\n\nexport default function runTests(options, cb) {\n  let {\n    endEarly,\n    tests,\n    args,\n    value,\n    errors,\n    sort,\n    path\n  } = options;\n  let callback = once(cb);\n  let count = tests.length;\n  const nestedErrors = [];\n  errors = errors ? errors : [];\n  if (!count) return errors.length ? callback(new ValidationError(errors, value, path)) : callback(null, value);\n\n  for (let i = 0; i < tests.length; i++) {\n    const test = tests[i];\n    test(args, function finishTestRun(err) {\n      if (err) {\n        // always return early for non validation errors\n        if (!ValidationError.isError(err)) {\n          return callback(err, value);\n        }\n\n        if (endEarly) {\n          err.value = value;\n          return callback(err, value);\n        }\n\n        nestedErrors.push(err);\n      }\n\n      if (--count <= 0) {\n        if (nestedErrors.length) {\n          if (sort) nestedErrors.sort(sort); //show parent errors after the nested ones: name.first, name\n\n          if (errors.length) nestedErrors.push(...errors);\n          errors = nestedErrors;\n        }\n\n        if (errors.length) {\n          callback(new ValidationError(errors, value, path), value);\n          return;\n        }\n\n        callback(null, value);\n      }\n    });\n  }\n}","import { getter } from 'property-expr';\nconst prefixes = {\n  context: '$',\n  value: '.'\n};\nexport function create(key, options) {\n  return new Reference(key, options);\n}\nexport default class Reference {\n  constructor(key, options = {}) {\n    this.key = void 0;\n    this.isContext = void 0;\n    this.isValue = void 0;\n    this.isSibling = void 0;\n    this.path = void 0;\n    this.getter = void 0;\n    this.map = void 0;\n    if (typeof key !== 'string') throw new TypeError('ref must be a string, got: ' + key);\n    this.key = key.trim();\n    if (key === '') throw new TypeError('ref must be a non-empty string');\n    this.isContext = this.key[0] === prefixes.context;\n    this.isValue = this.key[0] === prefixes.value;\n    this.isSibling = !this.isContext && !this.isValue;\n    let prefix = this.isContext ? prefixes.context : this.isValue ? prefixes.value : '';\n    this.path = this.key.slice(prefix.length);\n    this.getter = this.path && getter(this.path, true);\n    this.map = options.map;\n  }\n\n  getValue(value, parent, context) {\n    let result = this.isContext ? context : this.isValue ? value : parent;\n    if (this.getter) result = this.getter(result || {});\n    if (this.map) result = this.map(result);\n    return result;\n  }\n  /**\n   *\n   * @param {*} value\n   * @param {Object} options\n   * @param {Object=} options.context\n   * @param {Object=} options.parent\n   */\n\n\n  cast(value, options) {\n    return this.getValue(value, options == null ? void 0 : options.parent, options == null ? void 0 : options.context);\n  }\n\n  resolve() {\n    return this;\n  }\n\n  describe() {\n    return {\n      type: 'ref',\n      key: this.key\n    };\n  }\n\n  toString() {\n    return `Ref(${this.key})`;\n  }\n\n  static isRef(value) {\n    return value && value.__isYupRef;\n  }\n\n} // @ts-ignore\n\nReference.prototype.__isYupRef = true;","function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }\n\nfunction _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }\n\nimport mapValues from 'lodash/mapValues';\nimport ValidationError from '../ValidationError';\nimport Ref from '../Reference';\nexport default function createValidation(config) {\n  function validate(_ref, cb) {\n    let {\n      value,\n      path = '',\n      label,\n      options,\n      originalValue,\n      sync\n    } = _ref,\n        rest = _objectWithoutPropertiesLoose(_ref, [\"value\", \"path\", \"label\", \"options\", \"originalValue\", \"sync\"]);\n\n    const {\n      name,\n      test,\n      params,\n      message\n    } = config;\n    let {\n      parent,\n      context\n    } = options;\n\n    function resolve(item) {\n      return Ref.isRef(item) ? item.getValue(value, parent, context) : item;\n    }\n\n    function createError(overrides = {}) {\n      const nextParams = mapValues(_extends({\n        value,\n        originalValue,\n        label,\n        path: overrides.path || path\n      }, params, overrides.params), resolve);\n      const error = new ValidationError(ValidationError.formatError(overrides.message || message, nextParams), value, nextParams.path, overrides.type || name);\n      error.params = nextParams;\n      return error;\n    }\n\n    let ctx = _extends({\n      path,\n      parent,\n      type: name,\n      createError,\n      resolve,\n      options,\n      originalValue\n    }, rest);\n\n    if (!sync) {\n      try {\n        Promise.resolve(test.call(ctx, value, ctx)).then(validOrError => {\n          if (ValidationError.isError(validOrError)) cb(validOrError);else if (!validOrError) cb(createError());else cb(null, validOrError);\n        }).catch(cb);\n      } catch (err) {\n        cb(err);\n      }\n\n      return;\n    }\n\n    let result;\n\n    try {\n      var _ref2;\n\n      result = test.call(ctx, value, ctx);\n\n      if (typeof ((_ref2 = result) == null ? void 0 : _ref2.then) === 'function') {\n        throw new Error(`Validation test of type: \"${ctx.type}\" returned a Promise during a synchronous validate. ` + `This test will finish after the validate call has returned`);\n      }\n    } catch (err) {\n      cb(err);\n      return;\n    }\n\n    if (ValidationError.isError(result)) cb(result);else if (!result) cb(createError());else cb(null, result);\n  }\n\n  validate.OPTIONS = config;\n  return validate;\n}","import { forEach } from 'property-expr';\n\nlet trim = part => part.substr(0, part.length - 1).substr(1);\n\nexport function getIn(schema, path, value, context = value) {\n  let parent, lastPart, lastPartDebug; // root path: ''\n\n  if (!path) return {\n    parent,\n    parentPath: path,\n    schema\n  };\n  forEach(path, (_part, isBracket, isArray) => {\n    let part = isBracket ? trim(_part) : _part;\n    schema = schema.resolve({\n      context,\n      parent,\n      value\n    });\n\n    if (schema.innerType) {\n      let idx = isArray ? parseInt(part, 10) : 0;\n\n      if (value && idx >= value.length) {\n        throw new Error(`Yup.reach cannot resolve an array item at index: ${_part}, in the path: ${path}. ` + `because there is no value at that index. `);\n      }\n\n      parent = value;\n      value = value && value[idx];\n      schema = schema.innerType;\n    } // sometimes the array index part of a path doesn't exist: \"nested.arr.child\"\n    // in these cases the current part is the next schema and should be processed\n    // in this iteration. For cases where the index signature is included this\n    // check will fail and we'll handle the `child` part on the next iteration like normal\n\n\n    if (!isArray) {\n      if (!schema.fields || !schema.fields[part]) throw new Error(`The schema does not contain the path: ${path}. ` + `(failed at: ${lastPartDebug} which is a type: \"${schema._type}\")`);\n      parent = value;\n      value = value && value[part];\n      schema = schema.fields[part];\n    }\n\n    lastPart = part;\n    lastPartDebug = isBracket ? '[' + _part + ']' : '.' + _part;\n  });\n  return {\n    schema,\n    parent,\n    parentPath: lastPart\n  };\n}\n\nconst reach = (obj, path, value, context) => getIn(obj, path, value, context).schema;\n\nexport default reach;","import Reference from '../Reference';\nexport default class ReferenceSet {\n  constructor() {\n    this.list = void 0;\n    this.refs = void 0;\n    this.list = new Set();\n    this.refs = new Map();\n  }\n\n  get size() {\n    return this.list.size + this.refs.size;\n  }\n\n  describe() {\n    const description = [];\n\n    for (const item of this.list) description.push(item);\n\n    for (const [, ref] of this.refs) description.push(ref.describe());\n\n    return description;\n  }\n\n  toArray() {\n    return Array.from(this.list).concat(Array.from(this.refs.values()));\n  }\n\n  resolveAll(resolve) {\n    return this.toArray().reduce((acc, e) => acc.concat(Reference.isRef(e) ? resolve(e) : e), []);\n  }\n\n  add(value) {\n    Reference.isRef(value) ? this.refs.set(value.key, value) : this.list.add(value);\n  }\n\n  delete(value) {\n    Reference.isRef(value) ? this.refs.delete(value.key) : this.list.delete(value);\n  }\n\n  clone() {\n    const next = new ReferenceSet();\n    next.list = new Set(this.list);\n    next.refs = new Map(this.refs);\n    return next;\n  }\n\n  merge(newItems, removeItems) {\n    const next = this.clone();\n    newItems.list.forEach(value => next.add(value));\n    newItems.refs.forEach(value => next.add(value));\n    removeItems.list.forEach(value => next.delete(value));\n    removeItems.refs.forEach(value => next.delete(value));\n    return next;\n  }\n\n}","function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }\n\n// @ts-ignore\nimport cloneDeep from 'nanoclone';\nimport { mixed as locale } from './locale';\nimport Condition from './Condition';\nimport runTests from './util/runTests';\nimport createValidation from './util/createValidation';\nimport printValue from './util/printValue';\nimport Ref from './Reference';\nimport { getIn } from './util/reach';\nimport ValidationError from './ValidationError';\nimport ReferenceSet from './util/ReferenceSet';\nimport toArray from './util/toArray'; // const UNSET = 'unset' as const;\n\nexport default class BaseSchema {\n  constructor(options) {\n    this.deps = [];\n    this.tests = void 0;\n    this.transforms = void 0;\n    this.conditions = [];\n    this._mutate = void 0;\n    this._typeError = void 0;\n    this._whitelist = new ReferenceSet();\n    this._blacklist = new ReferenceSet();\n    this.exclusiveTests = Object.create(null);\n    this.spec = void 0;\n    this.tests = [];\n    this.transforms = [];\n    this.withMutation(() => {\n      this.typeError(locale.notType);\n    });\n    this.type = (options == null ? void 0 : options.type) || 'mixed';\n    this.spec = _extends({\n      strip: false,\n      strict: false,\n      abortEarly: true,\n      recursive: true,\n      nullable: false,\n      presence: 'optional'\n    }, options == null ? void 0 : options.spec);\n  } // TODO: remove\n\n\n  get _type() {\n    return this.type;\n  }\n\n  _typeCheck(_value) {\n    return true;\n  }\n\n  clone(spec) {\n    if (this._mutate) {\n      if (spec) Object.assign(this.spec, spec);\n      return this;\n    } // if the nested value is a schema we can skip cloning, since\n    // they are already immutable\n\n\n    const next = Object.create(Object.getPrototypeOf(this)); // @ts-expect-error this is readonly\n\n    next.type = this.type;\n    next._typeError = this._typeError;\n    next._whitelistError = this._whitelistError;\n    next._blacklistError = this._blacklistError;\n    next._whitelist = this._whitelist.clone();\n    next._blacklist = this._blacklist.clone();\n    next.exclusiveTests = _extends({}, this.exclusiveTests); // @ts-expect-error this is readonly\n\n    next.deps = [...this.deps];\n    next.conditions = [...this.conditions];\n    next.tests = [...this.tests];\n    next.transforms = [...this.transforms];\n    next.spec = cloneDeep(_extends({}, this.spec, spec));\n    return next;\n  }\n\n  label(label) {\n    let next = this.clone();\n    next.spec.label = label;\n    return next;\n  }\n\n  meta(...args) {\n    if (args.length === 0) return this.spec.meta;\n    let next = this.clone();\n    next.spec.meta = Object.assign(next.spec.meta || {}, args[0]);\n    return next;\n  } // withContext<TContext extends AnyObject>(): BaseSchema<\n  //   TCast,\n  //   TContext,\n  //   TOutput\n  // > {\n  //   return this as any;\n  // }\n\n\n  withMutation(fn) {\n    let before = this._mutate;\n    this._mutate = true;\n    let result = fn(this);\n    this._mutate = before;\n    return result;\n  }\n\n  concat(schema) {\n    if (!schema || schema === this) return this;\n    if (schema.type !== this.type && this.type !== 'mixed') throw new TypeError(`You cannot \\`concat()\\` schema's of different types: ${this.type} and ${schema.type}`);\n    let base = this;\n    let combined = schema.clone();\n\n    const mergedSpec = _extends({}, base.spec, combined.spec); // if (combined.spec.nullable === UNSET)\n    //   mergedSpec.nullable = base.spec.nullable;\n    // if (combined.spec.presence === UNSET)\n    //   mergedSpec.presence = base.spec.presence;\n\n\n    combined.spec = mergedSpec;\n    combined._typeError || (combined._typeError = base._typeError);\n    combined._whitelistError || (combined._whitelistError = base._whitelistError);\n    combined._blacklistError || (combined._blacklistError = base._blacklistError); // manually merge the blacklist/whitelist (the other `schema` takes\n    // precedence in case of conflicts)\n\n    combined._whitelist = base._whitelist.merge(schema._whitelist, schema._blacklist);\n    combined._blacklist = base._blacklist.merge(schema._blacklist, schema._whitelist); // start with the current tests\n\n    combined.tests = base.tests;\n    combined.exclusiveTests = base.exclusiveTests; // manually add the new tests to ensure\n    // the deduping logic is consistent\n\n    combined.withMutation(next => {\n      schema.tests.forEach(fn => {\n        next.test(fn.OPTIONS);\n      });\n    });\n    combined.transforms = [...base.transforms, ...combined.transforms];\n    return combined;\n  }\n\n  isType(v) {\n    if (this.spec.nullable && v === null) return true;\n    return this._typeCheck(v);\n  }\n\n  resolve(options) {\n    let schema = this;\n\n    if (schema.conditions.length) {\n      let conditions = schema.conditions;\n      schema = schema.clone();\n      schema.conditions = [];\n      schema = conditions.reduce((schema, condition) => condition.resolve(schema, options), schema);\n      schema = schema.resolve(options);\n    }\n\n    return schema;\n  }\n  /**\n   *\n   * @param {*} value\n   * @param {Object} options\n   * @param {*=} options.parent\n   * @param {*=} options.context\n   */\n\n\n  cast(value, options = {}) {\n    let resolvedSchema = this.resolve(_extends({\n      value\n    }, options));\n\n    let result = resolvedSchema._cast(value, options);\n\n    if (value !== undefined && options.assert !== false && resolvedSchema.isType(result) !== true) {\n      let formattedValue = printValue(value);\n      let formattedResult = printValue(result);\n      throw new TypeError(`The value of ${options.path || 'field'} could not be cast to a value ` + `that satisfies the schema type: \"${resolvedSchema._type}\". \\n\\n` + `attempted value: ${formattedValue} \\n` + (formattedResult !== formattedValue ? `result of cast: ${formattedResult}` : ''));\n    }\n\n    return result;\n  }\n\n  _cast(rawValue, _options) {\n    let value = rawValue === undefined ? rawValue : this.transforms.reduce((value, fn) => fn.call(this, value, rawValue, this), rawValue);\n\n    if (value === undefined) {\n      value = this.getDefault();\n    }\n\n    return value;\n  }\n\n  _validate(_value, options = {}, cb) {\n    let {\n      sync,\n      path,\n      from = [],\n      originalValue = _value,\n      strict = this.spec.strict,\n      abortEarly = this.spec.abortEarly\n    } = options;\n    let value = _value;\n\n    if (!strict) {\n      // this._validating = true;\n      value = this._cast(value, _extends({\n        assert: false\n      }, options)); // this._validating = false;\n    } // value is cast, we can check if it meets type requirements\n\n\n    let args = {\n      value,\n      path,\n      options,\n      originalValue,\n      schema: this,\n      label: this.spec.label,\n      sync,\n      from\n    };\n    let initialTests = [];\n    if (this._typeError) initialTests.push(this._typeError);\n    let finalTests = [];\n    if (this._whitelistError) finalTests.push(this._whitelistError);\n    if (this._blacklistError) finalTests.push(this._blacklistError);\n    runTests({\n      args,\n      value,\n      path,\n      sync,\n      tests: initialTests,\n      endEarly: abortEarly\n    }, err => {\n      if (err) return void cb(err, value);\n      runTests({\n        tests: this.tests.concat(finalTests),\n        args,\n        path,\n        sync,\n        value,\n        endEarly: abortEarly\n      }, cb);\n    });\n  }\n\n  validate(value, options, maybeCb) {\n    let schema = this.resolve(_extends({}, options, {\n      value\n    })); // callback case is for nested validations\n\n    return typeof maybeCb === 'function' ? schema._validate(value, options, maybeCb) : new Promise((resolve, reject) => schema._validate(value, options, (err, value) => {\n      if (err) reject(err);else resolve(value);\n    }));\n  }\n\n  validateSync(value, options) {\n    let schema = this.resolve(_extends({}, options, {\n      value\n    }));\n    let result;\n\n    schema._validate(value, _extends({}, options, {\n      sync: true\n    }), (err, value) => {\n      if (err) throw err;\n      result = value;\n    });\n\n    return result;\n  }\n\n  isValid(value, options) {\n    return this.validate(value, options).then(() => true, err => {\n      if (ValidationError.isError(err)) return false;\n      throw err;\n    });\n  }\n\n  isValidSync(value, options) {\n    try {\n      this.validateSync(value, options);\n      return true;\n    } catch (err) {\n      if (ValidationError.isError(err)) return false;\n      throw err;\n    }\n  }\n\n  _getDefault() {\n    let defaultValue = this.spec.default;\n\n    if (defaultValue == null) {\n      return defaultValue;\n    }\n\n    return typeof defaultValue === 'function' ? defaultValue.call(this) : cloneDeep(defaultValue);\n  }\n\n  getDefault(options) {\n    let schema = this.resolve(options || {});\n    return schema._getDefault();\n  }\n\n  default(def) {\n    if (arguments.length === 0) {\n      return this._getDefault();\n    }\n\n    let next = this.clone({\n      default: def\n    });\n    return next;\n  }\n\n  strict(isStrict = true) {\n    let next = this.clone();\n    next.spec.strict = isStrict;\n    return next;\n  }\n\n  _isPresent(value) {\n    return value != null;\n  }\n\n  defined(message = locale.defined) {\n    return this.test({\n      message,\n      name: 'defined',\n      exclusive: true,\n\n      test(value) {\n        return value !== undefined;\n      }\n\n    });\n  }\n\n  required(message = locale.required) {\n    return this.clone({\n      presence: 'required'\n    }).withMutation(s => s.test({\n      message,\n      name: 'required',\n      exclusive: true,\n\n      test(value) {\n        return this.schema._isPresent(value);\n      }\n\n    }));\n  }\n\n  notRequired() {\n    let next = this.clone({\n      presence: 'optional'\n    });\n    next.tests = next.tests.filter(test => test.OPTIONS.name !== 'required');\n    return next;\n  }\n\n  nullable(isNullable = true) {\n    let next = this.clone({\n      nullable: isNullable !== false\n    });\n    return next;\n  }\n\n  transform(fn) {\n    let next = this.clone();\n    next.transforms.push(fn);\n    return next;\n  }\n  /**\n   * Adds a test function to the schema's queue of tests.\n   * tests can be exclusive or non-exclusive.\n   *\n   * - exclusive tests, will replace any existing tests of the same name.\n   * - non-exclusive: can be stacked\n   *\n   * If a non-exclusive test is added to a schema with an exclusive test of the same name\n   * the exclusive test is removed and further tests of the same name will be stacked.\n   *\n   * If an exclusive test is added to a schema with non-exclusive tests of the same name\n   * the previous tests are removed and further tests of the same name will replace each other.\n   */\n\n\n  test(...args) {\n    let opts;\n\n    if (args.length === 1) {\n      if (typeof args[0] === 'function') {\n        opts = {\n          test: args[0]\n        };\n      } else {\n        opts = args[0];\n      }\n    } else if (args.length === 2) {\n      opts = {\n        name: args[0],\n        test: args[1]\n      };\n    } else {\n      opts = {\n        name: args[0],\n        message: args[1],\n        test: args[2]\n      };\n    }\n\n    if (opts.message === undefined) opts.message = locale.default;\n    if (typeof opts.test !== 'function') throw new TypeError('`test` is a required parameters');\n    let next = this.clone();\n    let validate = createValidation(opts);\n    let isExclusive = opts.exclusive || opts.name && next.exclusiveTests[opts.name] === true;\n\n    if (opts.exclusive) {\n      if (!opts.name) throw new TypeError('Exclusive tests must provide a unique `name` identifying the test');\n    }\n\n    if (opts.name) next.exclusiveTests[opts.name] = !!opts.exclusive;\n    next.tests = next.tests.filter(fn => {\n      if (fn.OPTIONS.name === opts.name) {\n        if (isExclusive) return false;\n        if (fn.OPTIONS.test === validate.OPTIONS.test) return false;\n      }\n\n      return true;\n    });\n    next.tests.push(validate);\n    return next;\n  }\n\n  when(keys, options) {\n    if (!Array.isArray(keys) && typeof keys !== 'string') {\n      options = keys;\n      keys = '.';\n    }\n\n    let next = this.clone();\n    let deps = toArray(keys).map(key => new Ref(key));\n    deps.forEach(dep => {\n      // @ts-ignore\n      if (dep.isSibling) next.deps.push(dep.key);\n    });\n    next.conditions.push(new Condition(deps, options));\n    return next;\n  }\n\n  typeError(message) {\n    let next = this.clone();\n    next._typeError = createValidation({\n      message,\n      name: 'typeError',\n\n      test(value) {\n        if (value !== undefined && !this.schema.isType(value)) return this.createError({\n          params: {\n            type: this.schema._type\n          }\n        });\n        return true;\n      }\n\n    });\n    return next;\n  }\n\n  oneOf(enums, message = locale.oneOf) {\n    let next = this.clone();\n    enums.forEach(val => {\n      next._whitelist.add(val);\n\n      next._blacklist.delete(val);\n    });\n    next._whitelistError = createValidation({\n      message,\n      name: 'oneOf',\n\n      test(value) {\n        if (value === undefined) return true;\n        let valids = this.schema._whitelist;\n        let resolved = valids.resolveAll(this.resolve);\n        return resolved.includes(value) ? true : this.createError({\n          params: {\n            values: valids.toArray().join(', '),\n            resolved\n          }\n        });\n      }\n\n    });\n    return next;\n  }\n\n  notOneOf(enums, message = locale.notOneOf) {\n    let next = this.clone();\n    enums.forEach(val => {\n      next._blacklist.add(val);\n\n      next._whitelist.delete(val);\n    });\n    next._blacklistError = createValidation({\n      message,\n      name: 'notOneOf',\n\n      test(value) {\n        let invalids = this.schema._blacklist;\n        let resolved = invalids.resolveAll(this.resolve);\n        if (resolved.includes(value)) return this.createError({\n          params: {\n            values: invalids.toArray().join(', '),\n            resolved\n          }\n        });\n        return true;\n      }\n\n    });\n    return next;\n  }\n\n  strip(strip = true) {\n    let next = this.clone();\n    next.spec.strip = strip;\n    return next;\n  }\n\n  describe() {\n    const next = this.clone();\n    const {\n      label,\n      meta\n    } = next.spec;\n    const description = {\n      meta,\n      label,\n      type: next.type,\n      oneOf: next._whitelist.describe(),\n      notOneOf: next._blacklist.describe(),\n      tests: next.tests.map(fn => ({\n        name: fn.OPTIONS.name,\n        params: fn.OPTIONS.params\n      })).filter((n, idx, list) => list.findIndex(c => c.name === n.name) === idx)\n    };\n    return description;\n  }\n\n} // eslint-disable-next-line @typescript-eslint/no-unused-vars\n\n// @ts-expect-error\nBaseSchema.prototype.__isYupSchema__ = true;\n\nfor (const method of ['validate', 'validateSync']) BaseSchema.prototype[`${method}At`] = function (path, value, options = {}) {\n  const {\n    parent,\n    parentPath,\n    schema\n  } = getIn(this, path, value, options.context);\n  return schema[method](parent && parent[parentPath], _extends({}, options, {\n    parent,\n    path\n  }));\n};\n\nfor (const alias of ['equals', 'is']) BaseSchema.prototype[alias] = BaseSchema.prototype.oneOf;\n\nfor (const alias of ['not', 'nope']) BaseSchema.prototype[alias] = BaseSchema.prototype.notOneOf;\n\nBaseSchema.prototype.optional = BaseSchema.prototype.notRequired;","import BaseSchema from './schema';\nconst Mixed = BaseSchema;\nexport default Mixed;\nexport function create() {\n  return new Mixed();\n} // XXX: this is using the Base schema so that `addMethod(mixed)` works as a base class\n\ncreate.prototype = Mixed.prototype;","const isAbsent = value => value == null;\n\nexport default isAbsent;","import BaseSchema from './schema';\nimport { boolean as locale } from './locale';\nimport isAbsent from './util/isAbsent';\nexport function create() {\n  return new BooleanSchema();\n}\nexport default class BooleanSchema extends BaseSchema {\n  constructor() {\n    super({\n      type: 'boolean'\n    });\n    this.withMutation(() => {\n      this.transform(function (value) {\n        if (!this.isType(value)) {\n          if (/^(true|1)$/i.test(String(value))) return true;\n          if (/^(false|0)$/i.test(String(value))) return false;\n        }\n\n        return value;\n      });\n    });\n  }\n\n  _typeCheck(v) {\n    if (v instanceof Boolean) v = v.valueOf();\n    return typeof v === 'boolean';\n  }\n\n  isTrue(message = locale.isValue) {\n    return this.test({\n      message,\n      name: 'is-value',\n      exclusive: true,\n      params: {\n        value: 'true'\n      },\n\n      test(value) {\n        return isAbsent(value) || value === true;\n      }\n\n    });\n  }\n\n  isFalse(message = locale.isValue) {\n    return this.test({\n      message,\n      name: 'is-value',\n      exclusive: true,\n      params: {\n        value: 'false'\n      },\n\n      test(value) {\n        return isAbsent(value) || value === false;\n      }\n\n    });\n  }\n\n}\ncreate.prototype = BooleanSchema.prototype;","import superPropBase from \"@babel/runtime/helpers/esm/superPropBase\";\nexport default function _get(target, property, receiver) {\n  if (typeof Reflect !== \"undefined\" && Reflect.get) {\n    _get = Reflect.get;\n  } else {\n    _get = function _get(target, property, receiver) {\n      var base = superPropBase(target, property);\n      if (!base) return;\n      var desc = Object.getOwnPropertyDescriptor(base, property);\n\n      if (desc.get) {\n        return desc.get.call(receiver);\n      }\n\n      return desc.value;\n    };\n  }\n\n  return _get(target, property, receiver || target);\n}","import getPrototypeOf from \"@babel/runtime/helpers/esm/getPrototypeOf\";\nexport default function _superPropBase(object, property) {\n  while (!Object.prototype.hasOwnProperty.call(object, property)) {\n    object = getPrototypeOf(object);\n    if (object === null) break;\n  }\n\n  return object;\n}","import { string as locale } from './locale';\nimport isAbsent from './util/isAbsent';\nimport BaseSchema from './schema'; // eslint-disable-next-line\n\nlet rEmail = /^((([a-z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])+(\\.([a-z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])+)*)|((\\x22)((((\\x20|\\x09)*(\\x0d\\x0a))?(\\x20|\\x09)+)?(([\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x7f]|\\x21|[\\x23-\\x5b]|[\\x5d-\\x7e]|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])|(\\\\([\\x01-\\x09\\x0b\\x0c\\x0d-\\x7f]|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF]))))*(((\\x20|\\x09)*(\\x0d\\x0a))?(\\x20|\\x09)+)?(\\x22)))@((([a-z]|\\d|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])|(([a-z]|\\d|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])([a-z]|\\d|-|\\.|_|~|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])*([a-z]|\\d|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])))\\.)+(([a-z]|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])|(([a-z]|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])([a-z]|\\d|-|\\.|_|~|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])*([a-z]|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])))$/i; // eslint-disable-next-line\n\nlet rUrl = /^((https?|ftp):)?\\/\\/(((([a-z]|\\d|-|\\.|_|~|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])|(%[\\da-f]{2})|[!\\$&'\\(\\)\\*\\+,;=]|:)*@)?(((\\d|[1-9]\\d|1\\d\\d|2[0-4]\\d|25[0-5])\\.(\\d|[1-9]\\d|1\\d\\d|2[0-4]\\d|25[0-5])\\.(\\d|[1-9]\\d|1\\d\\d|2[0-4]\\d|25[0-5])\\.(\\d|[1-9]\\d|1\\d\\d|2[0-4]\\d|25[0-5]))|((([a-z]|\\d|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])|(([a-z]|\\d|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])([a-z]|\\d|-|\\.|_|~|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])*([a-z]|\\d|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])))\\.)+(([a-z]|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])|(([a-z]|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])([a-z]|\\d|-|\\.|_|~|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])*([a-z]|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])))\\.?)(:\\d*)?)(\\/((([a-z]|\\d|-|\\.|_|~|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])|(%[\\da-f]{2})|[!\\$&'\\(\\)\\*\\+,;=]|:|@)+(\\/(([a-z]|\\d|-|\\.|_|~|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])|(%[\\da-f]{2})|[!\\$&'\\(\\)\\*\\+,;=]|:|@)*)*)?)?(\\?((([a-z]|\\d|-|\\.|_|~|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])|(%[\\da-f]{2})|[!\\$&'\\(\\)\\*\\+,;=]|:|@)|[\\uE000-\\uF8FF]|\\/|\\?)*)?(\\#((([a-z]|\\d|-|\\.|_|~|[\\u00A0-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFEF])|(%[\\da-f]{2})|[!\\$&'\\(\\)\\*\\+,;=]|:|@)|\\/|\\?)*)?$/i; // eslint-disable-next-line\n\nlet rUUID = /^(?:[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}|00000000-0000-0000-0000-000000000000)$/i;\n\nlet isTrimmed = value => isAbsent(value) || value === value.trim();\n\nlet objStringTag = {}.toString();\nexport function create() {\n  return new StringSchema();\n}\nexport default class StringSchema extends BaseSchema {\n  constructor() {\n    super({\n      type: 'string'\n    });\n    this.withMutation(() => {\n      this.transform(function (value) {\n        if (this.isType(value)) return value;\n        if (Array.isArray(value)) return value;\n        const strValue = value != null && value.toString ? value.toString() : value;\n        if (strValue === objStringTag) return value;\n        return strValue;\n      });\n    });\n  }\n\n  _typeCheck(value) {\n    if (value instanceof String) value = value.valueOf();\n    return typeof value === 'string';\n  }\n\n  _isPresent(value) {\n    return super._isPresent(value) && !!value.length;\n  }\n\n  length(length, message = locale.length) {\n    return this.test({\n      message,\n      name: 'length',\n      exclusive: true,\n      params: {\n        length\n      },\n\n      test(value) {\n        return isAbsent(value) || value.length === this.resolve(length);\n      }\n\n    });\n  }\n\n  min(min, message = locale.min) {\n    return this.test({\n      message,\n      name: 'min',\n      exclusive: true,\n      params: {\n        min\n      },\n\n      test(value) {\n        return isAbsent(value) || value.length >= this.resolve(min);\n      }\n\n    });\n  }\n\n  max(max, message = locale.max) {\n    return this.test({\n      name: 'max',\n      exclusive: true,\n      message,\n      params: {\n        max\n      },\n\n      test(value) {\n        return isAbsent(value) || value.length <= this.resolve(max);\n      }\n\n    });\n  }\n\n  matches(regex, options) {\n    let excludeEmptyString = false;\n    let message;\n    let name;\n\n    if (options) {\n      if (typeof options === 'object') {\n        ({\n          excludeEmptyString = false,\n          message,\n          name\n        } = options);\n      } else {\n        message = options;\n      }\n    }\n\n    return this.test({\n      name: name || 'matches',\n      message: message || locale.matches,\n      params: {\n        regex\n      },\n      test: value => isAbsent(value) || value === '' && excludeEmptyString || value.search(regex) !== -1\n    });\n  }\n\n  email(message = locale.email) {\n    return this.matches(rEmail, {\n      name: 'email',\n      message,\n      excludeEmptyString: true\n    });\n  }\n\n  url(message = locale.url) {\n    return this.matches(rUrl, {\n      name: 'url',\n      message,\n      excludeEmptyString: true\n    });\n  }\n\n  uuid(message = locale.uuid) {\n    return this.matches(rUUID, {\n      name: 'uuid',\n      message,\n      excludeEmptyString: false\n    });\n  } //-- transforms --\n\n\n  ensure() {\n    return this.default('').transform(val => val === null ? '' : val);\n  }\n\n  trim(message = locale.trim) {\n    return this.transform(val => val != null ? val.trim() : val).test({\n      message,\n      name: 'trim',\n      test: isTrimmed\n    });\n  }\n\n  lowercase(message = locale.lowercase) {\n    return this.transform(value => !isAbsent(value) ? value.toLowerCase() : value).test({\n      message,\n      name: 'string_case',\n      exclusive: true,\n      test: value => isAbsent(value) || value === value.toLowerCase()\n    });\n  }\n\n  uppercase(message = locale.uppercase) {\n    return this.transform(value => !isAbsent(value) ? value.toUpperCase() : value).test({\n      message,\n      name: 'string_case',\n      exclusive: true,\n      test: value => isAbsent(value) || value === value.toUpperCase()\n    });\n  }\n\n}\ncreate.prototype = StringSchema.prototype; //\n// String Interfaces\n//","import { number as locale } from './locale';\nimport isAbsent from './util/isAbsent';\nimport BaseSchema from './schema';\n\nlet isNaN = value => value != +value;\n\nexport function create() {\n  return new NumberSchema();\n}\nexport default class NumberSchema extends BaseSchema {\n  constructor() {\n    super({\n      type: 'number'\n    });\n    this.withMutation(() => {\n      this.transform(function (value) {\n        let parsed = value;\n\n        if (typeof parsed === 'string') {\n          parsed = parsed.replace(/\\s/g, '');\n          if (parsed === '') return NaN; // don't use parseFloat to avoid positives on alpha-numeric strings\n\n          parsed = +parsed;\n        }\n\n        if (this.isType(parsed)) return parsed;\n        return parseFloat(parsed);\n      });\n    });\n  }\n\n  _typeCheck(value) {\n    if (value instanceof Number) value = value.valueOf();\n    return typeof value === 'number' && !isNaN(value);\n  }\n\n  min(min, message = locale.min) {\n    return this.test({\n      message,\n      name: 'min',\n      exclusive: true,\n      params: {\n        min\n      },\n\n      test(value) {\n        return isAbsent(value) || value >= this.resolve(min);\n      }\n\n    });\n  }\n\n  max(max, message = locale.max) {\n    return this.test({\n      message,\n      name: 'max',\n      exclusive: true,\n      params: {\n        max\n      },\n\n      test(value) {\n        return isAbsent(value) || value <= this.resolve(max);\n      }\n\n    });\n  }\n\n  lessThan(less, message = locale.lessThan) {\n    return this.test({\n      message,\n      name: 'max',\n      exclusive: true,\n      params: {\n        less\n      },\n\n      test(value) {\n        return isAbsent(value) || value < this.resolve(less);\n      }\n\n    });\n  }\n\n  moreThan(more, message = locale.moreThan) {\n    return this.test({\n      message,\n      name: 'min',\n      exclusive: true,\n      params: {\n        more\n      },\n\n      test(value) {\n        return isAbsent(value) || value > this.resolve(more);\n      }\n\n    });\n  }\n\n  positive(msg = locale.positive) {\n    return this.moreThan(0, msg);\n  }\n\n  negative(msg = locale.negative) {\n    return this.lessThan(0, msg);\n  }\n\n  integer(message = locale.integer) {\n    return this.test({\n      name: 'integer',\n      message,\n      test: val => isAbsent(val) || Number.isInteger(val)\n    });\n  }\n\n  truncate() {\n    return this.transform(value => !isAbsent(value) ? value | 0 : value);\n  }\n\n  round(method) {\n    var _method;\n\n    let avail = ['ceil', 'floor', 'round', 'trunc'];\n    method = ((_method = method) == null ? void 0 : _method.toLowerCase()) || 'round'; // this exists for symemtry with the new Math.trunc\n\n    if (method === 'trunc') return this.truncate();\n    if (avail.indexOf(method.toLowerCase()) === -1) throw new TypeError('Only valid options for round() are: ' + avail.join(', '));\n    return this.transform(value => !isAbsent(value) ? Math[method](value) : value);\n  }\n\n}\ncreate.prototype = NumberSchema.prototype; //\n// Number Interfaces\n//","/* eslint-disable */\n\n/**\n *\n * Date.parse with progressive enhancement for ISO 8601 <https://github.com/csnover/js-iso8601>\n * NON-CONFORMANT EDITION.\n * © 2011 Colin Snover <http://zetafleet.com>\n * Released under MIT license.\n */\n//              1 YYYY                 2 MM        3 DD              4 HH     5 mm        6 ss            7 msec         8 Z 9 ±    10 tzHH    11 tzmm\nvar isoReg = /^(\\d{4}|[+\\-]\\d{6})(?:-?(\\d{2})(?:-?(\\d{2}))?)?(?:[ T]?(\\d{2}):?(\\d{2})(?::?(\\d{2})(?:[,\\.](\\d{1,}))?)?(?:(Z)|([+\\-])(\\d{2})(?::?(\\d{2}))?)?)?$/;\nexport default function parseIsoDate(date) {\n  var numericKeys = [1, 4, 5, 6, 7, 10, 11],\n      minutesOffset = 0,\n      timestamp,\n      struct;\n\n  if (struct = isoReg.exec(date)) {\n    // avoid NaN timestamps caused by “undefined” values being passed to Date.UTC\n    for (var i = 0, k; k = numericKeys[i]; ++i) struct[k] = +struct[k] || 0; // allow undefined days and months\n\n\n    struct[2] = (+struct[2] || 1) - 1;\n    struct[3] = +struct[3] || 1; // allow arbitrary sub-second precision beyond milliseconds\n\n    struct[7] = struct[7] ? String(struct[7]).substr(0, 3) : 0; // timestamps without timezone identifiers should be considered local time\n\n    if ((struct[8] === undefined || struct[8] === '') && (struct[9] === undefined || struct[9] === '')) timestamp = +new Date(struct[1], struct[2], struct[3], struct[4], struct[5], struct[6], struct[7]);else {\n      if (struct[8] !== 'Z' && struct[9] !== undefined) {\n        minutesOffset = struct[10] * 60 + struct[11];\n        if (struct[9] === '+') minutesOffset = 0 - minutesOffset;\n      }\n\n      timestamp = Date.UTC(struct[1], struct[2], struct[3], struct[4], struct[5] + minutesOffset, struct[6], struct[7]);\n    }\n  } else timestamp = Date.parse ? Date.parse(date) : NaN;\n\n  return timestamp;\n}","// @ts-ignore\nimport isoParse from './util/isodate';\nimport { date as locale } from './locale';\nimport isAbsent from './util/isAbsent';\nimport Ref from './Reference';\nimport BaseSchema from './schema';\nlet invalidDate = new Date('');\n\nlet isDate = obj => Object.prototype.toString.call(obj) === '[object Date]';\n\nexport function create() {\n  return new DateSchema();\n}\nexport default class DateSchema extends BaseSchema {\n  constructor() {\n    super({\n      type: 'date'\n    });\n    this.withMutation(() => {\n      this.transform(function (value) {\n        if (this.isType(value)) return value;\n        value = isoParse(value); // 0 is a valid timestamp equivalent to 1970-01-01T00:00:00Z(unix epoch) or before.\n\n        return !isNaN(value) ? new Date(value) : invalidDate;\n      });\n    });\n  }\n\n  _typeCheck(v) {\n    return isDate(v) && !isNaN(v.getTime());\n  }\n\n  prepareParam(ref, name) {\n    let param;\n\n    if (!Ref.isRef(ref)) {\n      let cast = this.cast(ref);\n      if (!this._typeCheck(cast)) throw new TypeError(`\\`${name}\\` must be a Date or a value that can be \\`cast()\\` to a Date`);\n      param = cast;\n    } else {\n      param = ref;\n    }\n\n    return param;\n  }\n\n  min(min, message = locale.min) {\n    let limit = this.prepareParam(min, 'min');\n    return this.test({\n      message,\n      name: 'min',\n      exclusive: true,\n      params: {\n        min\n      },\n\n      test(value) {\n        return isAbsent(value) || value >= this.resolve(limit);\n      }\n\n    });\n  }\n\n  max(max, message = locale.max) {\n    let limit = this.prepareParam(max, 'max');\n    return this.test({\n      message,\n      name: 'max',\n      exclusive: true,\n      params: {\n        max\n      },\n\n      test(value) {\n        return isAbsent(value) || value <= this.resolve(limit);\n      }\n\n    });\n  }\n\n}\nDateSchema.INVALID_DATE = invalidDate;\ncreate.prototype = DateSchema.prototype;\ncreate.INVALID_DATE = invalidDate;","import has from 'lodash/has'; // @ts-expect-error\n\nimport toposort from 'toposort';\nimport { split } from 'property-expr';\nimport Ref from '../Reference';\nimport isSchema from './isSchema';\nexport default function sortFields(fields, excludedEdges = []) {\n  let edges = [];\n  let nodes = new Set();\n  let excludes = new Set(excludedEdges.map(([a, b]) => `${a}-${b}`));\n\n  function addNode(depPath, key) {\n    let node = split(depPath)[0];\n    nodes.add(node);\n    if (!excludes.has(`${key}-${node}`)) edges.push([key, node]);\n  }\n\n  for (const key in fields) if (has(fields, key)) {\n    let value = fields[key];\n    nodes.add(key);\n    if (Ref.isRef(value) && value.isSibling) addNode(value.path, key);else if (isSchema(value) && 'deps' in value) value.deps.forEach(path => addNode(path, key));\n  }\n\n  return toposort.array(Array.from(nodes), edges).reverse();\n}","function findIndex(arr, err) {\n  let idx = Infinity;\n  arr.some((key, ii) => {\n    var _err$path;\n\n    if (((_err$path = err.path) == null ? void 0 : _err$path.indexOf(key)) !== -1) {\n      idx = ii;\n      return true;\n    }\n  });\n  return idx;\n}\n\nexport default function sortByKeyOrder(keys) {\n  return (a, b) => {\n    return findIndex(keys, a) - findIndex(keys, b);\n  };\n}","function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }\n\nimport has from 'lodash/has';\nimport snakeCase from 'lodash/snakeCase';\nimport camelCase from 'lodash/camelCase';\nimport mapKeys from 'lodash/mapKeys';\nimport mapValues from 'lodash/mapValues';\nimport { getter } from 'property-expr';\nimport { object as locale } from './locale';\nimport sortFields from './util/sortFields';\nimport sortByKeyOrder from './util/sortByKeyOrder';\nimport runTests from './util/runTests';\nimport ValidationError from './ValidationError';\nimport BaseSchema from './schema';\n\nlet isObject = obj => Object.prototype.toString.call(obj) === '[object Object]';\n\nfunction unknown(ctx, value) {\n  let known = Object.keys(ctx.fields);\n  return Object.keys(value).filter(key => known.indexOf(key) === -1);\n}\n\nconst defaultSort = sortByKeyOrder([]);\nexport default class ObjectSchema extends BaseSchema {\n  constructor(spec) {\n    super({\n      type: 'object'\n    });\n    this.fields = Object.create(null);\n    this._sortErrors = defaultSort;\n    this._nodes = [];\n    this._excludedEdges = [];\n    this.withMutation(() => {\n      this.transform(function coerce(value) {\n        if (typeof value === 'string') {\n          try {\n            value = JSON.parse(value);\n          } catch (err) {\n            value = null;\n          }\n        }\n\n        if (this.isType(value)) return value;\n        return null;\n      });\n\n      if (spec) {\n        this.shape(spec);\n      }\n    });\n  }\n\n  _typeCheck(value) {\n    return isObject(value) || typeof value === 'function';\n  }\n\n  _cast(_value, options = {}) {\n    var _options$stripUnknown;\n\n    let value = super._cast(_value, options); //should ignore nulls here\n\n\n    if (value === undefined) return this.getDefault();\n    if (!this._typeCheck(value)) return value;\n    let fields = this.fields;\n    let strip = (_options$stripUnknown = options.stripUnknown) != null ? _options$stripUnknown : this.spec.noUnknown;\n\n    let props = this._nodes.concat(Object.keys(value).filter(v => this._nodes.indexOf(v) === -1));\n\n    let intermediateValue = {}; // is filled during the transform below\n\n    let innerOptions = _extends({}, options, {\n      parent: intermediateValue,\n      __validating: options.__validating || false\n    });\n\n    let isChanged = false;\n\n    for (const prop of props) {\n      let field = fields[prop];\n      let exists = has(value, prop);\n\n      if (field) {\n        let fieldValue;\n        let inputValue = value[prop]; // safe to mutate since this is fired in sequence\n\n        innerOptions.path = (options.path ? `${options.path}.` : '') + prop; // innerOptions.value = value[prop];\n\n        field = field.resolve({\n          value: inputValue,\n          context: options.context,\n          parent: intermediateValue\n        });\n        let fieldSpec = 'spec' in field ? field.spec : undefined;\n        let strict = fieldSpec == null ? void 0 : fieldSpec.strict;\n\n        if (fieldSpec == null ? void 0 : fieldSpec.strip) {\n          isChanged = isChanged || prop in value;\n          continue;\n        }\n\n        fieldValue = !options.__validating || !strict ? // TODO: use _cast, this is double resolving\n        field.cast(value[prop], innerOptions) : value[prop];\n\n        if (fieldValue !== undefined) {\n          intermediateValue[prop] = fieldValue;\n        }\n      } else if (exists && !strip) {\n        intermediateValue[prop] = value[prop];\n      }\n\n      if (intermediateValue[prop] !== value[prop]) {\n        isChanged = true;\n      }\n    }\n\n    return isChanged ? intermediateValue : value;\n  }\n\n  _validate(_value, opts = {}, callback) {\n    let errors = [];\n    let {\n      sync,\n      from = [],\n      originalValue = _value,\n      abortEarly = this.spec.abortEarly,\n      recursive = this.spec.recursive\n    } = opts;\n    from = [{\n      schema: this,\n      value: originalValue\n    }, ...from]; // this flag is needed for handling `strict` correctly in the context of\n    // validation vs just casting. e.g strict() on a field is only used when validating\n\n    opts.__validating = true;\n    opts.originalValue = originalValue;\n    opts.from = from;\n\n    super._validate(_value, opts, (err, value) => {\n      if (err) {\n        if (!ValidationError.isError(err) || abortEarly) {\n          return void callback(err, value);\n        }\n\n        errors.push(err);\n      }\n\n      if (!recursive || !isObject(value)) {\n        callback(errors[0] || null, value);\n        return;\n      }\n\n      originalValue = originalValue || value;\n\n      let tests = this._nodes.map(key => (_, cb) => {\n        let path = key.indexOf('.') === -1 ? (opts.path ? `${opts.path}.` : '') + key : `${opts.path || ''}[\"${key}\"]`;\n        let field = this.fields[key];\n\n        if (field && 'validate' in field) {\n          field.validate(value[key], _extends({}, opts, {\n            // @ts-ignore\n            path,\n            from,\n            // inner fields are always strict:\n            // 1. this isn't strict so the casting will also have cast inner values\n            // 2. this is strict in which case the nested values weren't cast either\n            strict: true,\n            parent: value,\n            originalValue: originalValue[key]\n          }), cb);\n          return;\n        }\n\n        cb(null);\n      });\n\n      runTests({\n        sync,\n        tests,\n        value,\n        errors,\n        endEarly: abortEarly,\n        sort: this._sortErrors,\n        path: opts.path\n      }, callback);\n    });\n  }\n\n  clone(spec) {\n    const next = super.clone(spec);\n    next.fields = _extends({}, this.fields);\n    next._nodes = this._nodes;\n    next._excludedEdges = this._excludedEdges;\n    next._sortErrors = this._sortErrors;\n    return next;\n  }\n\n  concat(schema) {\n    let next = super.concat(schema);\n    let nextFields = next.fields;\n\n    for (let [field, schemaOrRef] of Object.entries(this.fields)) {\n      const target = nextFields[field];\n\n      if (target === undefined) {\n        nextFields[field] = schemaOrRef;\n      } else if (target instanceof BaseSchema && schemaOrRef instanceof BaseSchema) {\n        nextFields[field] = schemaOrRef.concat(target);\n      }\n    }\n\n    return next.withMutation(() => next.shape(nextFields, this._excludedEdges));\n  }\n\n  getDefaultFromShape() {\n    let dft = {};\n\n    this._nodes.forEach(key => {\n      const field = this.fields[key];\n      dft[key] = 'default' in field ? field.getDefault() : undefined;\n    });\n\n    return dft;\n  }\n\n  _getDefault() {\n    if ('default' in this.spec) {\n      return super._getDefault();\n    } // if there is no default set invent one\n\n\n    if (!this._nodes.length) {\n      return undefined;\n    }\n\n    return this.getDefaultFromShape();\n  }\n\n  shape(additions, excludes = []) {\n    let next = this.clone();\n    let fields = Object.assign(next.fields, additions);\n    next.fields = fields;\n    next._sortErrors = sortByKeyOrder(Object.keys(fields));\n\n    if (excludes.length) {\n      // this is a convenience for when users only supply a single pair\n      if (!Array.isArray(excludes[0])) excludes = [excludes];\n      next._excludedEdges = [...next._excludedEdges, ...excludes];\n    }\n\n    next._nodes = sortFields(fields, next._excludedEdges);\n    return next;\n  }\n\n  pick(keys) {\n    const picked = {};\n\n    for (const key of keys) {\n      if (this.fields[key]) picked[key] = this.fields[key];\n    }\n\n    return this.clone().withMutation(next => {\n      next.fields = {};\n      return next.shape(picked);\n    });\n  }\n\n  omit(keys) {\n    const next = this.clone();\n    const fields = next.fields;\n    next.fields = {};\n\n    for (const key of keys) {\n      delete fields[key];\n    }\n\n    return next.withMutation(() => next.shape(fields));\n  }\n\n  from(from, to, alias) {\n    let fromGetter = getter(from, true);\n    return this.transform(obj => {\n      if (obj == null) return obj;\n      let newObj = obj;\n\n      if (has(obj, from)) {\n        newObj = _extends({}, obj);\n        if (!alias) delete newObj[from];\n        newObj[to] = fromGetter(obj);\n      }\n\n      return newObj;\n    });\n  }\n\n  noUnknown(noAllow = true, message = locale.noUnknown) {\n    if (typeof noAllow === 'string') {\n      message = noAllow;\n      noAllow = true;\n    }\n\n    let next = this.test({\n      name: 'noUnknown',\n      exclusive: true,\n      message: message,\n\n      test(value) {\n        if (value == null) return true;\n        const unknownKeys = unknown(this.schema, value);\n        return !noAllow || unknownKeys.length === 0 || this.createError({\n          params: {\n            unknown: unknownKeys.join(', ')\n          }\n        });\n      }\n\n    });\n    next.spec.noUnknown = noAllow;\n    return next;\n  }\n\n  unknown(allow = true, message = locale.noUnknown) {\n    return this.noUnknown(!allow, message);\n  }\n\n  transformKeys(fn) {\n    return this.transform(obj => obj && mapKeys(obj, (_, key) => fn(key)));\n  }\n\n  camelCase() {\n    return this.transformKeys(camelCase);\n  }\n\n  snakeCase() {\n    return this.transformKeys(snakeCase);\n  }\n\n  constantCase() {\n    return this.transformKeys(key => snakeCase(key).toUpperCase());\n  }\n\n  describe() {\n    let base = super.describe();\n    base.fields = mapValues(this.fields, value => value.describe());\n    return base;\n  }\n\n}\nexport function create(spec) {\n  return new ObjectSchema(spec);\n}\ncreate.prototype = ObjectSchema.prototype;","function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }\n\nimport isAbsent from './util/isAbsent';\nimport isSchema from './util/isSchema';\nimport printValue from './util/printValue';\nimport { array as locale } from './locale';\nimport runTests from './util/runTests';\nimport ValidationError from './ValidationError';\nimport BaseSchema from './schema';\nexport function create(type) {\n  return new ArraySchema(type);\n}\nexport default class ArraySchema extends BaseSchema {\n  constructor(type) {\n    super({\n      type: 'array'\n    }); // `undefined` specifically means uninitialized, as opposed to\n    // \"no subtype\"\n\n    this.innerType = void 0;\n    this.innerType = type;\n    this.withMutation(() => {\n      this.transform(function (values) {\n        if (typeof values === 'string') try {\n          values = JSON.parse(values);\n        } catch (err) {\n          values = null;\n        }\n        return this.isType(values) ? values : null;\n      });\n    });\n  }\n\n  _typeCheck(v) {\n    return Array.isArray(v);\n  }\n\n  get _subType() {\n    return this.innerType;\n  }\n\n  _cast(_value, _opts) {\n    const value = super._cast(_value, _opts); //should ignore nulls here\n\n\n    if (!this._typeCheck(value) || !this.innerType) return value;\n    let isChanged = false;\n    const castArray = value.map((v, idx) => {\n      const castElement = this.innerType.cast(v, _extends({}, _opts, {\n        path: `${_opts.path || ''}[${idx}]`\n      }));\n\n      if (castElement !== v) {\n        isChanged = true;\n      }\n\n      return castElement;\n    });\n    return isChanged ? castArray : value;\n  }\n\n  _validate(_value, options = {}, callback) {\n    var _options$abortEarly, _options$recursive;\n\n    let errors = [];\n    let sync = options.sync;\n    let path = options.path;\n    let innerType = this.innerType;\n    let endEarly = (_options$abortEarly = options.abortEarly) != null ? _options$abortEarly : this.spec.abortEarly;\n    let recursive = (_options$recursive = options.recursive) != null ? _options$recursive : this.spec.recursive;\n    let originalValue = options.originalValue != null ? options.originalValue : _value;\n\n    super._validate(_value, options, (err, value) => {\n      if (err) {\n        if (!ValidationError.isError(err) || endEarly) {\n          return void callback(err, value);\n        }\n\n        errors.push(err);\n      }\n\n      if (!recursive || !innerType || !this._typeCheck(value)) {\n        callback(errors[0] || null, value);\n        return;\n      }\n\n      originalValue = originalValue || value; // #950 Ensure that sparse array empty slots are validated\n\n      let tests = new Array(value.length);\n\n      for (let idx = 0; idx < value.length; idx++) {\n        let item = value[idx];\n        let path = `${options.path || ''}[${idx}]`; // object._validate note for isStrict explanation\n\n        let innerOptions = _extends({}, options, {\n          path,\n          strict: true,\n          parent: value,\n          index: idx,\n          originalValue: originalValue[idx]\n        });\n\n        tests[idx] = (_, cb) => innerType.validate(item, innerOptions, cb);\n      }\n\n      runTests({\n        sync,\n        path,\n        value,\n        errors,\n        endEarly,\n        tests\n      }, callback);\n    });\n  }\n\n  clone(spec) {\n    const next = super.clone(spec);\n    next.innerType = this.innerType;\n    return next;\n  }\n\n  concat(schema) {\n    let next = super.concat(schema);\n    next.innerType = this.innerType;\n    if (schema.innerType) next.innerType = next.innerType ? // @ts-expect-error Lazy doesn't have concat()\n    next.innerType.concat(schema.innerType) : schema.innerType;\n    return next;\n  }\n\n  of(schema) {\n    // FIXME: this should return a new instance of array without the default to be\n    let next = this.clone();\n    if (!isSchema(schema)) throw new TypeError('`array.of()` sub-schema must be a valid yup schema not: ' + printValue(schema)); // FIXME(ts):\n\n    next.innerType = schema;\n    return next;\n  }\n\n  length(length, message = locale.length) {\n    return this.test({\n      message,\n      name: 'length',\n      exclusive: true,\n      params: {\n        length\n      },\n\n      test(value) {\n        return isAbsent(value) || value.length === this.resolve(length);\n      }\n\n    });\n  }\n\n  min(min, message) {\n    message = message || locale.min;\n    return this.test({\n      message,\n      name: 'min',\n      exclusive: true,\n      params: {\n        min\n      },\n\n      // FIXME(ts): Array<typeof T>\n      test(value) {\n        return isAbsent(value) || value.length >= this.resolve(min);\n      }\n\n    });\n  }\n\n  max(max, message) {\n    message = message || locale.max;\n    return this.test({\n      message,\n      name: 'max',\n      exclusive: true,\n      params: {\n        max\n      },\n\n      test(value) {\n        return isAbsent(value) || value.length <= this.resolve(max);\n      }\n\n    });\n  }\n\n  ensure() {\n    return this.default(() => []).transform((val, original) => {\n      // We don't want to return `null` for nullable schema\n      if (this._typeCheck(val)) return val;\n      return original == null ? [] : [].concat(original);\n    });\n  }\n\n  compact(rejector) {\n    let reject = !rejector ? v => !!v : (v, i, a) => !rejector(v, i, a);\n    return this.transform(values => values != null ? values.filter(reject) : values);\n  }\n\n  describe() {\n    let base = super.describe();\n    if (this.innerType) base.innerType = this.innerType.describe();\n    return base;\n  }\n\n  nullable(isNullable = true) {\n    return super.nullable(isNullable);\n  }\n\n  defined() {\n    return super.defined();\n  }\n\n  required(msg) {\n    return super.required(msg);\n  }\n\n}\ncreate.prototype = ArraySchema.prototype; //\n// Interfaces\n//","var baseIsNative = require('./_baseIsNative'),\n    getValue = require('./_getValue');\n\n/**\n * Gets the native function at `key` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {string} key The key of the method to get.\n * @returns {*} Returns the function if it's native, else `undefined`.\n */\nfunction getNative(object, key) {\n  var value = getValue(object, key);\n  return baseIsNative(value) ? value : undefined;\n}\n\nmodule.exports = getNative;\n","export default function _typeof(obj) {\n  \"@babel/helpers - typeof\";\n\n  if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") {\n    _typeof = function _typeof(obj) {\n      return typeof obj;\n    };\n  } else {\n    _typeof = function _typeof(obj) {\n      return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n    };\n  }\n\n  return _typeof(obj);\n}","var baseHas = require('./_baseHas'),\n    hasPath = require('./_hasPath');\n\n/**\n * Checks if `path` is a direct property of `object`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n * @example\n *\n * var object = { 'a': { 'b': 2 } };\n * var other = _.create({ 'a': _.create({ 'b': 2 }) });\n *\n * _.has(object, 'a');\n * // => true\n *\n * _.has(object, 'a.b');\n * // => true\n *\n * _.has(object, ['a', 'b']);\n * // => true\n *\n * _.has(other, 'a');\n * // => false\n */\nfunction has(object, path) {\n  return object != null && hasPath(object, path, baseHas);\n}\n\nmodule.exports = has;\n","import dynamicProto from \"@microsoft/dynamicproto-js\";\r\nimport { dateNow, isArray, isFunction, objDefineAccessors } from \"./HelperFuncs\";\r\nvar strExecutionContextKey = \"ctx\";\r\nvar _defaultPerfManager = null;\r\nvar PerfEvent = /** @class */ (function () {\r\n    function PerfEvent(name, payloadDetails, isAsync) {\r\n        var _self = this;\r\n        var accessorDefined = false;\r\n        _self.start = dateNow();\r\n        _self.name = name;\r\n        _self.isAsync = isAsync;\r\n        _self.isChildEvt = function () { return false; };\r\n        if (isFunction(payloadDetails)) {\r\n            // Create an accessor to minimize the potential performance impact of executing the payloadDetails callback\r\n            var theDetails_1;\r\n            accessorDefined = objDefineAccessors(_self, \"payload\", function () {\r\n                // Delay the execution of the payloadDetails until needed\r\n                if (!theDetails_1 && isFunction(payloadDetails)) {\r\n                    theDetails_1 = payloadDetails();\r\n                    // clear it out now so the referenced objects can be garbage collected\r\n                    payloadDetails = null;\r\n                }\r\n                return theDetails_1;\r\n            });\r\n        }\r\n        _self.getCtx = function (key) {\r\n            if (key) {\r\n                // The parent and child links are located directly on the object (for better viewing in the DebugPlugin)\r\n                if (key === PerfEvent.ParentContextKey || key === PerfEvent.ChildrenContextKey) {\r\n                    return _self[key];\r\n                }\r\n                return (_self[strExecutionContextKey] || {})[key];\r\n            }\r\n            return null;\r\n        };\r\n        _self.setCtx = function (key, value) {\r\n            if (key) {\r\n                // Put the parent and child links directly on the object (for better viewing in the DebugPlugin)\r\n                if (key === PerfEvent.ParentContextKey) {\r\n                    // Simple assumption, if we are setting a parent then we must be a child\r\n                    if (!_self[key]) {\r\n                        _self.isChildEvt = function () { return true; };\r\n                    }\r\n                    _self[key] = value;\r\n                }\r\n                else if (key === PerfEvent.ChildrenContextKey) {\r\n                    _self[key] = value;\r\n                }\r\n                else {\r\n                    var ctx = _self[strExecutionContextKey] = _self[strExecutionContextKey] || {};\r\n                    ctx[key] = value;\r\n                }\r\n            }\r\n        };\r\n        _self.complete = function () {\r\n            var childTime = 0;\r\n            var childEvts = _self.getCtx(PerfEvent.ChildrenContextKey);\r\n            if (isArray(childEvts)) {\r\n                for (var lp = 0; lp < childEvts.length; lp++) {\r\n                    var childEvt = childEvts[lp];\r\n                    if (childEvt) {\r\n                        childTime += childEvt.time;\r\n                    }\r\n                }\r\n            }\r\n            _self.time = dateNow() - _self.start;\r\n            _self.exTime = _self.time - childTime;\r\n            _self.complete = function () { };\r\n            if (!accessorDefined && isFunction(payloadDetails)) {\r\n                // If we couldn't define the property set during complete -- to minimize the perf impact until after the time\r\n                _self.payload = payloadDetails();\r\n            }\r\n        };\r\n    }\r\n    PerfEvent.ParentContextKey = \"parent\";\r\n    PerfEvent.ChildrenContextKey = \"childEvts\";\r\n    return PerfEvent;\r\n}());\r\nexport { PerfEvent };\r\nvar PerfManager = /** @class */ (function () {\r\n    function PerfManager(manager) {\r\n        /**\r\n         * General bucket used for execution context set and retrieved via setCtx() and getCtx.\r\n         * Defined as private so it can be visualized via the DebugPlugin\r\n         */\r\n        this.ctx = {};\r\n        dynamicProto(PerfManager, this, function (_self) {\r\n            _self.create = function (src, payloadDetails, isAsync) {\r\n                // TODO (@MSNev): at some point we will want to add additional configuration to \"select\" which events to instrument\r\n                // for now this is just a simple do everything.\r\n                return new PerfEvent(src, payloadDetails, isAsync);\r\n            };\r\n            _self.fire = function (perfEvent) {\r\n                if (perfEvent) {\r\n                    perfEvent.complete();\r\n                    if (manager && isFunction(manager.perfEvent)) {\r\n                        manager.perfEvent(perfEvent);\r\n                    }\r\n                }\r\n            };\r\n            _self.setCtx = function (key, value) {\r\n                if (key) {\r\n                    var ctx = _self[strExecutionContextKey] = _self[strExecutionContextKey] || {};\r\n                    ctx[key] = value;\r\n                }\r\n            };\r\n            _self.getCtx = function (key) {\r\n                return (_self[strExecutionContextKey] || {})[key];\r\n            };\r\n        });\r\n    }\r\n    /**\r\n     * Create a new event and start timing, the manager may return null/undefined to indicate that it does not\r\n     * want to monitor this source event.\r\n     * @param src The source name of the event\r\n     * @param payloadDetails - An optional callback function to fetch the payload details for the event.\r\n     * @param isAsync - Is the event occurring from a async event\r\n     */\r\n    PerfManager.prototype.create = function (src, payload, isAsync) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return null;\r\n    };\r\n    /**\r\n     * Complete the perfEvent and fire any notifications.\r\n     * @param perfEvent Fire the event which will also complete the passed event\r\n     */\r\n    PerfManager.prototype.fire = function (perfEvent) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Set an execution context value\r\n     * @param key - The context key name\r\n     * @param value - The value\r\n     */\r\n    PerfManager.prototype.setCtx = function (key, value) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Get the execution context value\r\n     * @param key - The context key\r\n     */\r\n    PerfManager.prototype.getCtx = function (key) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    return PerfManager;\r\n}());\r\nexport { PerfManager };\r\nvar doPerfActiveKey = \"CoreUtils.doPerf\";\r\n/**\r\n * Helper function to wrap a function with a perf event\r\n * @param mgrSource - The Performance Manager or a Performance provider source (may be null)\r\n * @param getSource - The callback to create the source name for the event (if perf monitoring is enabled)\r\n * @param func - The function to call and measure\r\n * @param details - A function to return the payload details\r\n * @param isAsync - Is the event / function being call asynchronously or synchronously\r\n */\r\nexport function doPerf(mgrSource, getSource, func, details, isAsync) {\r\n    if (mgrSource) {\r\n        var perfMgr = mgrSource;\r\n        if (isFunction(perfMgr[\"getPerfMgr\"])) {\r\n            // Looks like a perf manager provider object\r\n            perfMgr = perfMgr[\"getPerfMgr\"]();\r\n        }\r\n        if (perfMgr) {\r\n            var perfEvt = void 0;\r\n            var currentActive = perfMgr.getCtx(doPerfActiveKey);\r\n            try {\r\n                perfEvt = perfMgr.create(getSource(), details, isAsync);\r\n                if (perfEvt) {\r\n                    if (currentActive && perfEvt.setCtx) {\r\n                        perfEvt.setCtx(PerfEvent.ParentContextKey, currentActive);\r\n                        if (currentActive.getCtx && currentActive.setCtx) {\r\n                            var children = currentActive.getCtx(PerfEvent.ChildrenContextKey);\r\n                            if (!children) {\r\n                                children = [];\r\n                                currentActive.setCtx(PerfEvent.ChildrenContextKey, children);\r\n                            }\r\n                            children.push(perfEvt);\r\n                        }\r\n                    }\r\n                    // Set this event as the active event now\r\n                    perfMgr.setCtx(doPerfActiveKey, perfEvt);\r\n                    return func(perfEvt);\r\n                }\r\n            }\r\n            catch (ex) {\r\n                if (perfEvt && perfEvt.setCtx) {\r\n                    perfEvt.setCtx(\"exception\", ex);\r\n                }\r\n            }\r\n            finally {\r\n                // fire the perf event\r\n                if (perfEvt) {\r\n                    perfMgr.fire(perfEvt);\r\n                }\r\n                // Reset the active event to the previous value\r\n                perfMgr.setCtx(doPerfActiveKey, currentActive);\r\n            }\r\n        }\r\n    }\r\n    return func();\r\n}\r\n/**\r\n * Set the global performance manager to use when there is no core instance or it has not been initialized yet.\r\n * @param perfManager - The IPerfManager instance to use when no performance manager is supplied.\r\n */\r\nexport function setGblPerfMgr(perfManager) {\r\n    _defaultPerfManager = perfManager;\r\n}\r\n/**\r\n * Get the current global performance manager that will be used with no performance manager is supplied.\r\n * @returns - The current default manager\r\n */\r\nexport function getGblPerfMgr() {\r\n    return _defaultPerfManager;\r\n}\r\n//# sourceMappingURL=PerfManager.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n\"use strict\";\r\nimport { _InternalMessageId, LoggingSeverity } from \"../JavaScriptSDK.Enums/LoggingEnums\";\r\nimport { hasJSON, getJSON, getConsole } from \"./EnvUtils\";\r\nimport dynamicProto from \"@microsoft/dynamicproto-js\";\r\nimport { isFunction, isNullOrUndefined, isUndefined } from \"./HelperFuncs\";\r\n/**\r\n * For user non actionable traces use AI Internal prefix.\r\n */\r\nvar AiNonUserActionablePrefix = \"AI (Internal): \";\r\n/**\r\n * Prefix of the traces in portal.\r\n */\r\nvar AiUserActionablePrefix = \"AI: \";\r\n/**\r\n *  Session storage key for the prefix for the key indicating message type already logged\r\n */\r\nvar AIInternalMessagePrefix = \"AITR_\";\r\nvar strErrorToConsole = \"errorToConsole\";\r\nvar strWarnToConsole = \"warnToConsole\";\r\nfunction _sanitizeDiagnosticText(text) {\r\n    if (text) {\r\n        return \"\\\"\" + text.replace(/\\\"/g, \"\") + \"\\\"\";\r\n    }\r\n    return \"\";\r\n}\r\nfunction _logToConsole(func, message) {\r\n    var theConsole = getConsole();\r\n    if (!!theConsole) {\r\n        var logFunc = \"log\";\r\n        if (theConsole[func]) {\r\n            logFunc = func;\r\n        }\r\n        if (isFunction(theConsole[logFunc])) {\r\n            theConsole[logFunc](message);\r\n        }\r\n    }\r\n}\r\nvar _InternalLogMessage = /** @class */ (function () {\r\n    function _InternalLogMessage(msgId, msg, isUserAct, properties) {\r\n        if (isUserAct === void 0) { isUserAct = false; }\r\n        var _self = this;\r\n        _self.messageId = msgId;\r\n        _self.message =\r\n            (isUserAct ? AiUserActionablePrefix : AiNonUserActionablePrefix) +\r\n                msgId;\r\n        var strProps = \"\";\r\n        if (hasJSON()) {\r\n            strProps = getJSON().stringify(properties);\r\n        }\r\n        var diagnosticText = (msg ? \" message:\" + _sanitizeDiagnosticText(msg) : \"\") +\r\n            (properties ? \" props:\" + _sanitizeDiagnosticText(strProps) : \"\");\r\n        _self.message += diagnosticText;\r\n    }\r\n    _InternalLogMessage.dataType = \"MessageData\";\r\n    return _InternalLogMessage;\r\n}());\r\nexport { _InternalLogMessage };\r\nexport function safeGetLogger(core, config) {\r\n    return (core || {}).logger || new DiagnosticLogger(config);\r\n}\r\nvar DiagnosticLogger = /** @class */ (function () {\r\n    function DiagnosticLogger(config) {\r\n        this.identifier = \"DiagnosticLogger\";\r\n        /**\r\n         * The internal logging queue\r\n         */\r\n        this.queue = [];\r\n        /**\r\n         * Count of internal messages sent\r\n         */\r\n        var _messageCount = 0;\r\n        /**\r\n         * Holds information about what message types were already logged to console or sent to server.\r\n         */\r\n        var _messageLogged = {};\r\n        dynamicProto(DiagnosticLogger, this, function (_self) {\r\n            if (isNullOrUndefined(config)) {\r\n                config = {};\r\n            }\r\n            _self.consoleLoggingLevel = function () { return _getConfigValue(\"loggingLevelConsole\", 0); };\r\n            _self.telemetryLoggingLevel = function () { return _getConfigValue(\"loggingLevelTelemetry\", 1); };\r\n            _self.maxInternalMessageLimit = function () { return _getConfigValue(\"maxMessageLimit\", 25); };\r\n            _self.enableDebugExceptions = function () { return _getConfigValue(\"enableDebugExceptions\", false); };\r\n            /**\r\n             * This method will throw exceptions in debug mode or attempt to log the error as a console warning.\r\n             * @param severity {LoggingSeverity} - The severity of the log message\r\n             * @param message {_InternalLogMessage} - The log message.\r\n             */\r\n            _self.throwInternal = function (severity, msgId, msg, properties, isUserAct) {\r\n                if (isUserAct === void 0) { isUserAct = false; }\r\n                var message = new _InternalLogMessage(msgId, msg, isUserAct, properties);\r\n                if (_self.enableDebugExceptions()) {\r\n                    throw message;\r\n                }\r\n                else {\r\n                    // Get the logging function and fallback to warnToConsole of for some reason errorToConsole doesn't exist\r\n                    var logFunc = severity === LoggingSeverity.CRITICAL ? strErrorToConsole : strWarnToConsole;\r\n                    if (!isUndefined(message.message)) {\r\n                        var logLevel = _self.consoleLoggingLevel();\r\n                        if (isUserAct) {\r\n                            // check if this message type was already logged to console for this page view and if so, don't log it again\r\n                            var messageKey = +message.messageId;\r\n                            if (!_messageLogged[messageKey] && logLevel >= severity) {\r\n                                _self[logFunc](message.message);\r\n                                _messageLogged[messageKey] = true;\r\n                            }\r\n                        }\r\n                        else {\r\n                            // Only log traces if the console Logging Level is >= the throwInternal severity level\r\n                            if (logLevel >= severity) {\r\n                                _self[logFunc](message.message);\r\n                            }\r\n                        }\r\n                        _self.logInternalMessage(severity, message);\r\n                    }\r\n                }\r\n            };\r\n            /**\r\n             * This will write a warning to the console if possible\r\n             * @param message {string} - The warning message\r\n             */\r\n            _self.warnToConsole = function (message) {\r\n                _logToConsole(\"warn\", message);\r\n            };\r\n            /**\r\n             * This will write an error to the console if possible\r\n             * @param message {string} - The error message\r\n             */\r\n            _self.errorToConsole = function (message) {\r\n                _logToConsole(\"error\", message);\r\n            };\r\n            /**\r\n             * Resets the internal message count\r\n             */\r\n            _self.resetInternalMessageCount = function () {\r\n                _messageCount = 0;\r\n                _messageLogged = {};\r\n            };\r\n            /**\r\n             * Logs a message to the internal queue.\r\n             * @param severity {LoggingSeverity} - The severity of the log message\r\n             * @param message {_InternalLogMessage} - The message to log.\r\n             */\r\n            _self.logInternalMessage = function (severity, message) {\r\n                if (_areInternalMessagesThrottled()) {\r\n                    return;\r\n                }\r\n                // check if this message type was already logged for this session and if so, don't log it again\r\n                var logMessage = true;\r\n                var messageKey = AIInternalMessagePrefix + message.messageId;\r\n                // if the session storage is not available, limit to only one message type per page view\r\n                if (_messageLogged[messageKey]) {\r\n                    logMessage = false;\r\n                }\r\n                else {\r\n                    _messageLogged[messageKey] = true;\r\n                }\r\n                if (logMessage) {\r\n                    // Push the event in the internal queue\r\n                    if (severity <= _self.telemetryLoggingLevel()) {\r\n                        _self.queue.push(message);\r\n                        _messageCount++;\r\n                    }\r\n                    // When throttle limit reached, send a special event\r\n                    if (_messageCount === _self.maxInternalMessageLimit()) {\r\n                        var throttleLimitMessage = \"Internal events throttle limit per PageView reached for this app.\";\r\n                        var throttleMessage = new _InternalLogMessage(_InternalMessageId.MessageLimitPerPVExceeded, throttleLimitMessage, false);\r\n                        _self.queue.push(throttleMessage);\r\n                        _self.warnToConsole(throttleLimitMessage);\r\n                    }\r\n                }\r\n            };\r\n            function _getConfigValue(name, defValue) {\r\n                var value = config[name];\r\n                if (!isNullOrUndefined(value)) {\r\n                    return value;\r\n                }\r\n                return defValue;\r\n            }\r\n            function _areInternalMessagesThrottled() {\r\n                return _messageCount >= _self.maxInternalMessageLimit();\r\n            }\r\n        });\r\n    }\r\n    /**\r\n     * When this is true the SDK will throw exceptions to aid in debugging.\r\n     */\r\n    DiagnosticLogger.prototype.enableDebugExceptions = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return false;\r\n    };\r\n    /**\r\n     * 0: OFF (default)\r\n     * 1: CRITICAL\r\n     * 2: >= WARNING\r\n     */\r\n    DiagnosticLogger.prototype.consoleLoggingLevel = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return 0;\r\n    };\r\n    /**\r\n     * 0: OFF\r\n     * 1: CRITICAL (default)\r\n     * 2: >= WARNING\r\n     */\r\n    DiagnosticLogger.prototype.telemetryLoggingLevel = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return 1;\r\n    };\r\n    /**\r\n     * The maximum number of internal messages allowed to be sent per page view\r\n     */\r\n    DiagnosticLogger.prototype.maxInternalMessageLimit = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return 25;\r\n    };\r\n    /**\r\n     * This method will throw exceptions in debug mode or attempt to log the error as a console warning.\r\n     * @param severity {LoggingSeverity} - The severity of the log message\r\n     * @param message {_InternalLogMessage} - The log message.\r\n     */\r\n    DiagnosticLogger.prototype.throwInternal = function (severity, msgId, msg, properties, isUserAct) {\r\n        if (isUserAct === void 0) { isUserAct = false; }\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * This will write a warning to the console if possible\r\n     * @param message {string} - The warning message\r\n     */\r\n    DiagnosticLogger.prototype.warnToConsole = function (message) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * This will write an error to the console if possible\r\n     * @param message {string} - The warning message\r\n     */\r\n    DiagnosticLogger.prototype.errorToConsole = function (message) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Resets the internal message count\r\n     */\r\n    DiagnosticLogger.prototype.resetInternalMessageCount = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Logs a message to the internal queue.\r\n     * @param severity {LoggingSeverity} - The severity of the log message\r\n     * @param message {_InternalLogMessage} - The message to log.\r\n     */\r\n    DiagnosticLogger.prototype.logInternalMessage = function (severity, message) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    return DiagnosticLogger;\r\n}());\r\nexport { DiagnosticLogger };\r\n//# sourceMappingURL=DiagnosticLogger.js.map","export var reflow = function reflow(node) {\n  return node.scrollTop;\n};\nexport function getTransitionProps(props, options) {\n  var timeout = props.timeout,\n      _props$style = props.style,\n      style = _props$style === void 0 ? {} : _props$style;\n  return {\n    duration: style.transitionDuration || typeof timeout === 'number' ? timeout : timeout[options.mode] || 0,\n    delay: style.transitionDelay\n  };\n}","/*! *****************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise */\r\n\r\nvar extendStatics = function(d, b) {\r\n    extendStatics = Object.setPrototypeOf ||\r\n        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\r\n    return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n    extendStatics(d, b);\r\n    function __() { this.constructor = d; }\r\n    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n}\r\n\r\nexport var __assign = function() {\r\n    __assign = Object.assign || function __assign(t) {\r\n        for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n            s = arguments[i];\r\n            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n        }\r\n        return t;\r\n    }\r\n    return __assign.apply(this, arguments);\r\n}\r\n\r\nexport function __rest(s, e) {\r\n    var t = {};\r\n    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\r\n        t[p] = s[p];\r\n    if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\r\n        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\r\n            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\r\n                t[p[i]] = s[p[i]];\r\n        }\r\n    return t;\r\n}\r\n\r\nexport function __decorate(decorators, target, key, desc) {\r\n    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\r\n    if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\r\n    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n    return c > 3 && r && Object.defineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __param(paramIndex, decorator) {\r\n    return function (target, key) { decorator(target, key, paramIndex); }\r\n}\r\n\r\nexport function __metadata(metadataKey, metadataValue) {\r\n    if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\r\n}\r\n\r\nexport function __awaiter(thisArg, _arguments, P, generator) {\r\n    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\r\n    return new (P || (P = Promise))(function (resolve, reject) {\r\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\r\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n    });\r\n}\r\n\r\nexport function __generator(thisArg, body) {\r\n    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\r\n    return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n    function verb(n) { return function (v) { return step([n, v]); }; }\r\n    function step(op) {\r\n        if (f) throw new TypeError(\"Generator is already executing.\");\r\n        while (_) try {\r\n            if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\r\n            if (y = 0, t) op = [op[0] & 2, t.value];\r\n            switch (op[0]) {\r\n                case 0: case 1: t = op; break;\r\n                case 4: _.label++; return { value: op[1], done: false };\r\n                case 5: _.label++; y = op[1]; op = [0]; continue;\r\n                case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n                default:\r\n                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n                    if (t[2]) _.ops.pop();\r\n                    _.trys.pop(); continue;\r\n            }\r\n            op = body.call(thisArg, _);\r\n        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n    }\r\n}\r\n\r\nexport function __createBinding(o, m, k, k2) {\r\n    if (k2 === undefined) k2 = k;\r\n    o[k2] = m[k];\r\n}\r\n\r\nexport function __exportStar(m, exports) {\r\n    for (var p in m) if (p !== \"default\" && !exports.hasOwnProperty(p)) exports[p] = m[p];\r\n}\r\n\r\nexport function __values(o) {\r\n    var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n    if (m) return m.call(o);\r\n    if (o && typeof o.length === \"number\") return {\r\n        next: function () {\r\n            if (o && i >= o.length) o = void 0;\r\n            return { value: o && o[i++], done: !o };\r\n        }\r\n    };\r\n    throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n    var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n    if (!m) return o;\r\n    var i = m.call(o), r, ar = [], e;\r\n    try {\r\n        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n    }\r\n    catch (error) { e = { error: error }; }\r\n    finally {\r\n        try {\r\n            if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n        }\r\n        finally { if (e) throw e.error; }\r\n    }\r\n    return ar;\r\n}\r\n\r\nexport function __spread() {\r\n    for (var ar = [], i = 0; i < arguments.length; i++)\r\n        ar = ar.concat(__read(arguments[i]));\r\n    return ar;\r\n}\r\n\r\nexport function __spreadArrays() {\r\n    for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n    for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n        for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n            r[k] = a[j];\r\n    return r;\r\n};\r\n\r\nexport function __await(v) {\r\n    return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n    if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n    var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n    return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n    function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n    function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n    function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n    function fulfill(value) { resume(\"next\", value); }\r\n    function reject(value) { resume(\"throw\", value); }\r\n    function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n    var i, p;\r\n    return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n    function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: n === \"return\" } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n    if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n    var m = o[Symbol.asyncIterator], i;\r\n    return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n    function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n    function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n    if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n    return cooked;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n    if (mod && mod.__esModule) return mod;\r\n    var result = {};\r\n    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];\r\n    result.default = mod;\r\n    return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n    return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, privateMap) {\r\n    if (!privateMap.has(receiver)) {\r\n        throw new TypeError(\"attempted to get private field on non-instance\");\r\n    }\r\n    return privateMap.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, privateMap, value) {\r\n    if (!privateMap.has(receiver)) {\r\n        throw new TypeError(\"attempted to set private field on non-instance\");\r\n    }\r\n    privateMap.set(receiver, value);\r\n    return value;\r\n}\r\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nimport {\n  InstantiationMode,\n  InstanceFactory,\n  ComponentType,\n  Dictionary,\n  Name\n} from './types';\n\n/**\n * Component for service name T, e.g. `auth`, `auth-internal`\n */\nexport class Component<T extends Name = Name> {\n  multipleInstances = false;\n  /**\n   * Properties to be added to the service namespace\n   */\n  serviceProps: Dictionary = {};\n\n  instantiationMode = InstantiationMode.LAZY;\n\n  /**\n   *\n   * @param name The public service name, e.g. app, auth, firestore, database\n   * @param instanceFactory Service factory responsible for creating the public interface\n   * @param type whether the service provided by the component is public or private\n   */\n  constructor(\n    readonly name: T,\n    readonly instanceFactory: InstanceFactory<T>,\n    readonly type: ComponentType\n  ) {}\n\n  setInstantiationMode(mode: InstantiationMode): this {\n    this.instantiationMode = mode;\n    return this;\n  }\n\n  setMultipleInstances(multipleInstances: boolean): this {\n    this.multipleInstances = multipleInstances;\n    return this;\n  }\n\n  setServiceProps(props: Dictionary): this {\n    this.serviceProps = props;\n    return this;\n  }\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { Deferred } from '@firebase/util';\nimport { ComponentContainer } from './component_container';\nimport { DEFAULT_ENTRY_NAME } from './constants';\nimport { InstantiationMode, Name, NameServiceMapping } from './types';\nimport { Component } from './component';\n\n/**\n * Provider for instance for service name T, e.g. 'auth', 'auth-internal'\n * NameServiceMapping[T] is an alias for the type of the instance\n */\nexport class Provider<T extends Name> {\n  private component: Component<T> | null = null;\n  private readonly instances: Map<string, NameServiceMapping[T]> = new Map();\n  private readonly instancesDeferred: Map<\n    string,\n    Deferred<NameServiceMapping[T]>\n  > = new Map();\n\n  constructor(\n    private readonly name: T,\n    private readonly container: ComponentContainer\n  ) {}\n\n  /**\n   * @param identifier A provider can provide mulitple instances of a service\n   * if this.component.multipleInstances is true.\n   */\n  get(identifier: string = DEFAULT_ENTRY_NAME): Promise<NameServiceMapping[T]> {\n    // if multipleInstances is not supported, use the default name\n    const normalizedIdentifier = this.normalizeInstanceIdentifier(identifier);\n\n    if (!this.instancesDeferred.has(normalizedIdentifier)) {\n      const deferred = new Deferred<NameServiceMapping[T]>();\n      this.instancesDeferred.set(normalizedIdentifier, deferred);\n      // If the service instance is available, resolve the promise with it immediately\n      try {\n        const instance = this.getOrInitializeService(normalizedIdentifier);\n        if (instance) {\n          deferred.resolve(instance);\n        }\n      } catch (e) {\n        // when the instance factory throws an exception during get(), it should not cause\n        // a fatal error. We just return the unresolved promise in this case.\n      }\n    }\n\n    return this.instancesDeferred.get(normalizedIdentifier)!.promise;\n  }\n\n  /**\n   *\n   * @param options.identifier A provider can provide mulitple instances of a service\n   * if this.component.multipleInstances is true.\n   * @param options.optional If optional is false or not provided, the method throws an error when\n   * the service is not immediately available.\n   * If optional is true, the method returns null if the service is not immediately available.\n   */\n  getImmediate(options: {\n    identifier?: string;\n    optional: true;\n  }): NameServiceMapping[T] | null;\n  getImmediate(options?: {\n    identifier?: string;\n    optional?: false;\n  }): NameServiceMapping[T];\n  getImmediate(options?: {\n    identifier?: string;\n    optional?: boolean;\n  }): NameServiceMapping[T] | null {\n    const { identifier, optional } = {\n      identifier: DEFAULT_ENTRY_NAME,\n      optional: false,\n      ...options\n    };\n    // if multipleInstances is not supported, use the default name\n    const normalizedIdentifier = this.normalizeInstanceIdentifier(identifier);\n    try {\n      const instance = this.getOrInitializeService(normalizedIdentifier);\n\n      if (!instance) {\n        if (optional) {\n          return null;\n        }\n        throw Error(`Service ${this.name} is not available`);\n      }\n      return instance;\n    } catch (e) {\n      if (optional) {\n        return null;\n      } else {\n        throw e;\n      }\n    }\n  }\n\n  getComponent(): Component<T> | null {\n    return this.component;\n  }\n\n  setComponent(component: Component<T>): void {\n    if (component.name !== this.name) {\n      throw Error(\n        `Mismatching Component ${component.name} for Provider ${this.name}.`\n      );\n    }\n\n    if (this.component) {\n      throw Error(`Component for ${this.name} has already been provided`);\n    }\n\n    this.component = component;\n    // if the service is eager, initialize the default instance\n    if (isComponentEager(component)) {\n      try {\n        this.getOrInitializeService(DEFAULT_ENTRY_NAME);\n      } catch (e) {\n        // when the instance factory for an eager Component throws an exception during the eager\n        // initialization, it should not cause a fatal error.\n        // TODO: Investigate if we need to make it configurable, because some component may want to cause\n        // a fatal error in this case?\n      }\n    }\n\n    // Create service instances for the pending promises and resolve them\n    // NOTE: if this.multipleInstances is false, only the default instance will be created\n    // and all promises with resolve with it regardless of the identifier.\n    for (const [\n      instanceIdentifier,\n      instanceDeferred\n    ] of this.instancesDeferred.entries()) {\n      const normalizedIdentifier = this.normalizeInstanceIdentifier(\n        instanceIdentifier\n      );\n\n      try {\n        // `getOrInitializeService()` should always return a valid instance since a component is guaranteed. use ! to make typescript happy.\n        const instance = this.getOrInitializeService(normalizedIdentifier)!;\n        instanceDeferred.resolve(instance);\n      } catch (e) {\n        // when the instance factory throws an exception, it should not cause\n        // a fatal error. We just leave the promise unresolved.\n      }\n    }\n  }\n\n  clearInstance(identifier: string = DEFAULT_ENTRY_NAME): void {\n    this.instancesDeferred.delete(identifier);\n    this.instances.delete(identifier);\n  }\n\n  // app.delete() will call this method on every provider to delete the services\n  // TODO: should we mark the provider as deleted?\n  async delete(): Promise<void> {\n    const services = Array.from(this.instances.values());\n\n    await Promise.all([\n      ...services\n        .filter(service => 'INTERNAL' in service) // legacy services\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        .map(service => (service as any).INTERNAL!.delete()),\n      ...services\n        .filter(service => '_delete' in service) // modularized services\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\n        .map(service => (service as any)._delete())\n    ]);\n  }\n\n  isComponentSet(): boolean {\n    return this.component != null;\n  }\n\n  private getOrInitializeService(\n    identifier: string\n  ): NameServiceMapping[T] | null {\n    let instance = this.instances.get(identifier);\n    if (!instance && this.component) {\n      instance = this.component.instanceFactory(\n        this.container,\n        normalizeIdentifierForFactory(identifier)\n      ) as NameServiceMapping[T];\n      this.instances.set(identifier, instance);\n    }\n\n    return instance || null;\n  }\n\n  private normalizeInstanceIdentifier(identifier: string): string {\n    if (this.component) {\n      return this.component.multipleInstances ? identifier : DEFAULT_ENTRY_NAME;\n    } else {\n      return identifier; // assume multiple instances are supported before the component is provided.\n    }\n  }\n}\n\n// undefined should be passed to the service factory for the default instance\nfunction normalizeIdentifierForFactory(identifier: string): string | undefined {\n  return identifier === DEFAULT_ENTRY_NAME ? undefined : identifier;\n}\n\nfunction isComponentEager(component: Component<Name>): boolean {\n  return component.instantiationMode === InstantiationMode.EAGER;\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { Provider } from './provider';\nimport { Component } from './component';\nimport { Name } from './types';\n\n/**\n * ComponentContainer that provides Providers for service name T, e.g. `auth`, `auth-internal`\n */\nexport class ComponentContainer {\n  private readonly providers = new Map<string, Provider<Name>>();\n\n  constructor(private readonly name: string) {}\n\n  /**\n   *\n   * @param component Component being added\n   * @param overwrite When a component with the same name has already been registered,\n   * if overwrite is true: overwrite the existing component with the new component and create a new\n   * provider with the new component. It can be useful in tests where you want to use different mocks\n   * for different tests.\n   * if overwrite is false: throw an exception\n   */\n  addComponent<T extends Name>(component: Component<T>): void {\n    const provider = this.getProvider(component.name);\n    if (provider.isComponentSet()) {\n      throw new Error(\n        `Component ${component.name} has already been registered with ${this.name}`\n      );\n    }\n\n    provider.setComponent(component);\n  }\n\n  addOrOverwriteComponent<T extends Name>(component: Component<T>): void {\n    const provider = this.getProvider(component.name);\n    if (provider.isComponentSet()) {\n      // delete the existing provider from the container, so we can register the new component\n      this.providers.delete(component.name);\n    }\n\n    this.addComponent(component);\n  }\n\n  /**\n   * getProvider provides a type safe interface where it can only be called with a field name\n   * present in NameServiceMapping interface.\n   *\n   * Firebase SDKs providing services should extend NameServiceMapping interface to register\n   * themselves.\n   */\n  getProvider<T extends Name>(name: T): Provider<T> {\n    if (this.providers.has(name)) {\n      return this.providers.get(name) as Provider<T>;\n    }\n\n    // create a Provider for a service that hasn't registered with Firebase\n    const provider = new Provider<T>(name, this);\n    this.providers.set(name, provider);\n\n    return provider as Provider<T>;\n  }\n\n  getProviders(): Array<Provider<Name>> {\n    return Array.from(this.providers.values());\n  }\n}\n","import arrayLikeToArray from \"@babel/runtime/helpers/esm/arrayLikeToArray\";\nexport default function _unsupportedIterableToArray(o, minLen) {\n  if (!o) return;\n  if (typeof o === \"string\") return arrayLikeToArray(o, minLen);\n  var n = Object.prototype.toString.call(o).slice(8, -1);\n  if (n === \"Object\" && o.constructor) n = o.constructor.name;\n  if (n === \"Map\" || n === \"Set\") return Array.from(o);\n  if (n === \"Arguments\" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return arrayLikeToArray(o, minLen);\n}","import PropTypes from 'prop-types';\nimport withSideEffect from 'react-side-effect';\nimport isEqual from 'react-fast-compare';\nimport React from 'react';\nimport objectAssign from 'object-assign';\n\nvar ATTRIBUTE_NAMES = {\n    BODY: \"bodyAttributes\",\n    HTML: \"htmlAttributes\",\n    TITLE: \"titleAttributes\"\n};\n\nvar TAG_NAMES = {\n    BASE: \"base\",\n    BODY: \"body\",\n    HEAD: \"head\",\n    HTML: \"html\",\n    LINK: \"link\",\n    META: \"meta\",\n    NOSCRIPT: \"noscript\",\n    SCRIPT: \"script\",\n    STYLE: \"style\",\n    TITLE: \"title\"\n};\n\nvar VALID_TAG_NAMES = Object.keys(TAG_NAMES).map(function (name) {\n    return TAG_NAMES[name];\n});\n\nvar TAG_PROPERTIES = {\n    CHARSET: \"charset\",\n    CSS_TEXT: \"cssText\",\n    HREF: \"href\",\n    HTTPEQUIV: \"http-equiv\",\n    INNER_HTML: \"innerHTML\",\n    ITEM_PROP: \"itemprop\",\n    NAME: \"name\",\n    PROPERTY: \"property\",\n    REL: \"rel\",\n    SRC: \"src\",\n    TARGET: \"target\"\n};\n\nvar REACT_TAG_MAP = {\n    accesskey: \"accessKey\",\n    charset: \"charSet\",\n    class: \"className\",\n    contenteditable: \"contentEditable\",\n    contextmenu: \"contextMenu\",\n    \"http-equiv\": \"httpEquiv\",\n    itemprop: \"itemProp\",\n    tabindex: \"tabIndex\"\n};\n\nvar HELMET_PROPS = {\n    DEFAULT_TITLE: \"defaultTitle\",\n    DEFER: \"defer\",\n    ENCODE_SPECIAL_CHARACTERS: \"encodeSpecialCharacters\",\n    ON_CHANGE_CLIENT_STATE: \"onChangeClientState\",\n    TITLE_TEMPLATE: \"titleTemplate\"\n};\n\nvar HTML_TAG_MAP = Object.keys(REACT_TAG_MAP).reduce(function (obj, key) {\n    obj[REACT_TAG_MAP[key]] = key;\n    return obj;\n}, {});\n\nvar SELF_CLOSING_TAGS = [TAG_NAMES.NOSCRIPT, TAG_NAMES.SCRIPT, TAG_NAMES.STYLE];\n\nvar HELMET_ATTRIBUTE = \"data-react-helmet\";\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) {\n  return typeof obj;\n} : function (obj) {\n  return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n};\n\nvar classCallCheck = function (instance, Constructor) {\n  if (!(instance instanceof Constructor)) {\n    throw new TypeError(\"Cannot call a class as a function\");\n  }\n};\n\nvar createClass = function () {\n  function defineProperties(target, props) {\n    for (var i = 0; i < props.length; i++) {\n      var descriptor = props[i];\n      descriptor.enumerable = descriptor.enumerable || false;\n      descriptor.configurable = true;\n      if (\"value\" in descriptor) descriptor.writable = true;\n      Object.defineProperty(target, descriptor.key, descriptor);\n    }\n  }\n\n  return function (Constructor, protoProps, staticProps) {\n    if (protoProps) defineProperties(Constructor.prototype, protoProps);\n    if (staticProps) defineProperties(Constructor, staticProps);\n    return Constructor;\n  };\n}();\n\nvar _extends = Object.assign || function (target) {\n  for (var i = 1; i < arguments.length; i++) {\n    var source = arguments[i];\n\n    for (var key in source) {\n      if (Object.prototype.hasOwnProperty.call(source, key)) {\n        target[key] = source[key];\n      }\n    }\n  }\n\n  return target;\n};\n\nvar inherits = function (subClass, superClass) {\n  if (typeof superClass !== \"function\" && superClass !== null) {\n    throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass);\n  }\n\n  subClass.prototype = Object.create(superClass && superClass.prototype, {\n    constructor: {\n      value: subClass,\n      enumerable: false,\n      writable: true,\n      configurable: true\n    }\n  });\n  if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;\n};\n\nvar objectWithoutProperties = function (obj, keys) {\n  var target = {};\n\n  for (var i in obj) {\n    if (keys.indexOf(i) >= 0) continue;\n    if (!Object.prototype.hasOwnProperty.call(obj, i)) continue;\n    target[i] = obj[i];\n  }\n\n  return target;\n};\n\nvar possibleConstructorReturn = function (self, call) {\n  if (!self) {\n    throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n  }\n\n  return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self;\n};\n\nvar encodeSpecialCharacters = function encodeSpecialCharacters(str) {\n    var encode = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;\n\n    if (encode === false) {\n        return String(str);\n    }\n\n    return String(str).replace(/&/g, \"&amp;\").replace(/</g, \"&lt;\").replace(/>/g, \"&gt;\").replace(/\"/g, \"&quot;\").replace(/'/g, \"&#x27;\");\n};\n\nvar getTitleFromPropsList = function getTitleFromPropsList(propsList) {\n    var innermostTitle = getInnermostProperty(propsList, TAG_NAMES.TITLE);\n    var innermostTemplate = getInnermostProperty(propsList, HELMET_PROPS.TITLE_TEMPLATE);\n\n    if (innermostTemplate && innermostTitle) {\n        // use function arg to avoid need to escape $ characters\n        return innermostTemplate.replace(/%s/g, function () {\n            return Array.isArray(innermostTitle) ? innermostTitle.join(\"\") : innermostTitle;\n        });\n    }\n\n    var innermostDefaultTitle = getInnermostProperty(propsList, HELMET_PROPS.DEFAULT_TITLE);\n\n    return innermostTitle || innermostDefaultTitle || undefined;\n};\n\nvar getOnChangeClientState = function getOnChangeClientState(propsList) {\n    return getInnermostProperty(propsList, HELMET_PROPS.ON_CHANGE_CLIENT_STATE) || function () {};\n};\n\nvar getAttributesFromPropsList = function getAttributesFromPropsList(tagType, propsList) {\n    return propsList.filter(function (props) {\n        return typeof props[tagType] !== \"undefined\";\n    }).map(function (props) {\n        return props[tagType];\n    }).reduce(function (tagAttrs, current) {\n        return _extends({}, tagAttrs, current);\n    }, {});\n};\n\nvar getBaseTagFromPropsList = function getBaseTagFromPropsList(primaryAttributes, propsList) {\n    return propsList.filter(function (props) {\n        return typeof props[TAG_NAMES.BASE] !== \"undefined\";\n    }).map(function (props) {\n        return props[TAG_NAMES.BASE];\n    }).reverse().reduce(function (innermostBaseTag, tag) {\n        if (!innermostBaseTag.length) {\n            var keys = Object.keys(tag);\n\n            for (var i = 0; i < keys.length; i++) {\n                var attributeKey = keys[i];\n                var lowerCaseAttributeKey = attributeKey.toLowerCase();\n\n                if (primaryAttributes.indexOf(lowerCaseAttributeKey) !== -1 && tag[lowerCaseAttributeKey]) {\n                    return innermostBaseTag.concat(tag);\n                }\n            }\n        }\n\n        return innermostBaseTag;\n    }, []);\n};\n\nvar getTagsFromPropsList = function getTagsFromPropsList(tagName, primaryAttributes, propsList) {\n    // Calculate list of tags, giving priority innermost component (end of the propslist)\n    var approvedSeenTags = {};\n\n    return propsList.filter(function (props) {\n        if (Array.isArray(props[tagName])) {\n            return true;\n        }\n        if (typeof props[tagName] !== \"undefined\") {\n            warn(\"Helmet: \" + tagName + \" should be of type \\\"Array\\\". Instead found type \\\"\" + _typeof(props[tagName]) + \"\\\"\");\n        }\n        return false;\n    }).map(function (props) {\n        return props[tagName];\n    }).reverse().reduce(function (approvedTags, instanceTags) {\n        var instanceSeenTags = {};\n\n        instanceTags.filter(function (tag) {\n            var primaryAttributeKey = void 0;\n            var keys = Object.keys(tag);\n            for (var i = 0; i < keys.length; i++) {\n                var attributeKey = keys[i];\n                var lowerCaseAttributeKey = attributeKey.toLowerCase();\n\n                // Special rule with link tags, since rel and href are both primary tags, rel takes priority\n                if (primaryAttributes.indexOf(lowerCaseAttributeKey) !== -1 && !(primaryAttributeKey === TAG_PROPERTIES.REL && tag[primaryAttributeKey].toLowerCase() === \"canonical\") && !(lowerCaseAttributeKey === TAG_PROPERTIES.REL && tag[lowerCaseAttributeKey].toLowerCase() === \"stylesheet\")) {\n                    primaryAttributeKey = lowerCaseAttributeKey;\n                }\n                // Special case for innerHTML which doesn't work lowercased\n                if (primaryAttributes.indexOf(attributeKey) !== -1 && (attributeKey === TAG_PROPERTIES.INNER_HTML || attributeKey === TAG_PROPERTIES.CSS_TEXT || attributeKey === TAG_PROPERTIES.ITEM_PROP)) {\n                    primaryAttributeKey = attributeKey;\n                }\n            }\n\n            if (!primaryAttributeKey || !tag[primaryAttributeKey]) {\n                return false;\n            }\n\n            var value = tag[primaryAttributeKey].toLowerCase();\n\n            if (!approvedSeenTags[primaryAttributeKey]) {\n                approvedSeenTags[primaryAttributeKey] = {};\n            }\n\n            if (!instanceSeenTags[primaryAttributeKey]) {\n                instanceSeenTags[primaryAttributeKey] = {};\n            }\n\n            if (!approvedSeenTags[primaryAttributeKey][value]) {\n                instanceSeenTags[primaryAttributeKey][value] = true;\n                return true;\n            }\n\n            return false;\n        }).reverse().forEach(function (tag) {\n            return approvedTags.push(tag);\n        });\n\n        // Update seen tags with tags from this instance\n        var keys = Object.keys(instanceSeenTags);\n        for (var i = 0; i < keys.length; i++) {\n            var attributeKey = keys[i];\n            var tagUnion = objectAssign({}, approvedSeenTags[attributeKey], instanceSeenTags[attributeKey]);\n\n            approvedSeenTags[attributeKey] = tagUnion;\n        }\n\n        return approvedTags;\n    }, []).reverse();\n};\n\nvar getInnermostProperty = function getInnermostProperty(propsList, property) {\n    for (var i = propsList.length - 1; i >= 0; i--) {\n        var props = propsList[i];\n\n        if (props.hasOwnProperty(property)) {\n            return props[property];\n        }\n    }\n\n    return null;\n};\n\nvar reducePropsToState = function reducePropsToState(propsList) {\n    return {\n        baseTag: getBaseTagFromPropsList([TAG_PROPERTIES.HREF, TAG_PROPERTIES.TARGET], propsList),\n        bodyAttributes: getAttributesFromPropsList(ATTRIBUTE_NAMES.BODY, propsList),\n        defer: getInnermostProperty(propsList, HELMET_PROPS.DEFER),\n        encode: getInnermostProperty(propsList, HELMET_PROPS.ENCODE_SPECIAL_CHARACTERS),\n        htmlAttributes: getAttributesFromPropsList(ATTRIBUTE_NAMES.HTML, propsList),\n        linkTags: getTagsFromPropsList(TAG_NAMES.LINK, [TAG_PROPERTIES.REL, TAG_PROPERTIES.HREF], propsList),\n        metaTags: getTagsFromPropsList(TAG_NAMES.META, [TAG_PROPERTIES.NAME, TAG_PROPERTIES.CHARSET, TAG_PROPERTIES.HTTPEQUIV, TAG_PROPERTIES.PROPERTY, TAG_PROPERTIES.ITEM_PROP], propsList),\n        noscriptTags: getTagsFromPropsList(TAG_NAMES.NOSCRIPT, [TAG_PROPERTIES.INNER_HTML], propsList),\n        onChangeClientState: getOnChangeClientState(propsList),\n        scriptTags: getTagsFromPropsList(TAG_NAMES.SCRIPT, [TAG_PROPERTIES.SRC, TAG_PROPERTIES.INNER_HTML], propsList),\n        styleTags: getTagsFromPropsList(TAG_NAMES.STYLE, [TAG_PROPERTIES.CSS_TEXT], propsList),\n        title: getTitleFromPropsList(propsList),\n        titleAttributes: getAttributesFromPropsList(ATTRIBUTE_NAMES.TITLE, propsList)\n    };\n};\n\nvar rafPolyfill = function () {\n    var clock = Date.now();\n\n    return function (callback) {\n        var currentTime = Date.now();\n\n        if (currentTime - clock > 16) {\n            clock = currentTime;\n            callback(currentTime);\n        } else {\n            setTimeout(function () {\n                rafPolyfill(callback);\n            }, 0);\n        }\n    };\n}();\n\nvar cafPolyfill = function cafPolyfill(id) {\n    return clearTimeout(id);\n};\n\nvar requestAnimationFrame = typeof window !== \"undefined\" ? window.requestAnimationFrame && window.requestAnimationFrame.bind(window) || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || rafPolyfill : global.requestAnimationFrame || rafPolyfill;\n\nvar cancelAnimationFrame = typeof window !== \"undefined\" ? window.cancelAnimationFrame || window.webkitCancelAnimationFrame || window.mozCancelAnimationFrame || cafPolyfill : global.cancelAnimationFrame || cafPolyfill;\n\nvar warn = function warn(msg) {\n    return console && typeof console.warn === \"function\" && console.warn(msg);\n};\n\nvar _helmetCallback = null;\n\nvar handleClientStateChange = function handleClientStateChange(newState) {\n    if (_helmetCallback) {\n        cancelAnimationFrame(_helmetCallback);\n    }\n\n    if (newState.defer) {\n        _helmetCallback = requestAnimationFrame(function () {\n            commitTagChanges(newState, function () {\n                _helmetCallback = null;\n            });\n        });\n    } else {\n        commitTagChanges(newState);\n        _helmetCallback = null;\n    }\n};\n\nvar commitTagChanges = function commitTagChanges(newState, cb) {\n    var baseTag = newState.baseTag,\n        bodyAttributes = newState.bodyAttributes,\n        htmlAttributes = newState.htmlAttributes,\n        linkTags = newState.linkTags,\n        metaTags = newState.metaTags,\n        noscriptTags = newState.noscriptTags,\n        onChangeClientState = newState.onChangeClientState,\n        scriptTags = newState.scriptTags,\n        styleTags = newState.styleTags,\n        title = newState.title,\n        titleAttributes = newState.titleAttributes;\n\n    updateAttributes(TAG_NAMES.BODY, bodyAttributes);\n    updateAttributes(TAG_NAMES.HTML, htmlAttributes);\n\n    updateTitle(title, titleAttributes);\n\n    var tagUpdates = {\n        baseTag: updateTags(TAG_NAMES.BASE, baseTag),\n        linkTags: updateTags(TAG_NAMES.LINK, linkTags),\n        metaTags: updateTags(TAG_NAMES.META, metaTags),\n        noscriptTags: updateTags(TAG_NAMES.NOSCRIPT, noscriptTags),\n        scriptTags: updateTags(TAG_NAMES.SCRIPT, scriptTags),\n        styleTags: updateTags(TAG_NAMES.STYLE, styleTags)\n    };\n\n    var addedTags = {};\n    var removedTags = {};\n\n    Object.keys(tagUpdates).forEach(function (tagType) {\n        var _tagUpdates$tagType = tagUpdates[tagType],\n            newTags = _tagUpdates$tagType.newTags,\n            oldTags = _tagUpdates$tagType.oldTags;\n\n\n        if (newTags.length) {\n            addedTags[tagType] = newTags;\n        }\n        if (oldTags.length) {\n            removedTags[tagType] = tagUpdates[tagType].oldTags;\n        }\n    });\n\n    cb && cb();\n\n    onChangeClientState(newState, addedTags, removedTags);\n};\n\nvar flattenArray = function flattenArray(possibleArray) {\n    return Array.isArray(possibleArray) ? possibleArray.join(\"\") : possibleArray;\n};\n\nvar updateTitle = function updateTitle(title, attributes) {\n    if (typeof title !== \"undefined\" && document.title !== title) {\n        document.title = flattenArray(title);\n    }\n\n    updateAttributes(TAG_NAMES.TITLE, attributes);\n};\n\nvar updateAttributes = function updateAttributes(tagName, attributes) {\n    var elementTag = document.getElementsByTagName(tagName)[0];\n\n    if (!elementTag) {\n        return;\n    }\n\n    var helmetAttributeString = elementTag.getAttribute(HELMET_ATTRIBUTE);\n    var helmetAttributes = helmetAttributeString ? helmetAttributeString.split(\",\") : [];\n    var attributesToRemove = [].concat(helmetAttributes);\n    var attributeKeys = Object.keys(attributes);\n\n    for (var i = 0; i < attributeKeys.length; i++) {\n        var attribute = attributeKeys[i];\n        var value = attributes[attribute] || \"\";\n\n        if (elementTag.getAttribute(attribute) !== value) {\n            elementTag.setAttribute(attribute, value);\n        }\n\n        if (helmetAttributes.indexOf(attribute) === -1) {\n            helmetAttributes.push(attribute);\n        }\n\n        var indexToSave = attributesToRemove.indexOf(attribute);\n        if (indexToSave !== -1) {\n            attributesToRemove.splice(indexToSave, 1);\n        }\n    }\n\n    for (var _i = attributesToRemove.length - 1; _i >= 0; _i--) {\n        elementTag.removeAttribute(attributesToRemove[_i]);\n    }\n\n    if (helmetAttributes.length === attributesToRemove.length) {\n        elementTag.removeAttribute(HELMET_ATTRIBUTE);\n    } else if (elementTag.getAttribute(HELMET_ATTRIBUTE) !== attributeKeys.join(\",\")) {\n        elementTag.setAttribute(HELMET_ATTRIBUTE, attributeKeys.join(\",\"));\n    }\n};\n\nvar updateTags = function updateTags(type, tags) {\n    var headElement = document.head || document.querySelector(TAG_NAMES.HEAD);\n    var tagNodes = headElement.querySelectorAll(type + \"[\" + HELMET_ATTRIBUTE + \"]\");\n    var oldTags = Array.prototype.slice.call(tagNodes);\n    var newTags = [];\n    var indexToDelete = void 0;\n\n    if (tags && tags.length) {\n        tags.forEach(function (tag) {\n            var newElement = document.createElement(type);\n\n            for (var attribute in tag) {\n                if (tag.hasOwnProperty(attribute)) {\n                    if (attribute === TAG_PROPERTIES.INNER_HTML) {\n                        newElement.innerHTML = tag.innerHTML;\n                    } else if (attribute === TAG_PROPERTIES.CSS_TEXT) {\n                        if (newElement.styleSheet) {\n                            newElement.styleSheet.cssText = tag.cssText;\n                        } else {\n                            newElement.appendChild(document.createTextNode(tag.cssText));\n                        }\n                    } else {\n                        var value = typeof tag[attribute] === \"undefined\" ? \"\" : tag[attribute];\n                        newElement.setAttribute(attribute, value);\n                    }\n                }\n            }\n\n            newElement.setAttribute(HELMET_ATTRIBUTE, \"true\");\n\n            // Remove a duplicate tag from domTagstoRemove, so it isn't cleared.\n            if (oldTags.some(function (existingTag, index) {\n                indexToDelete = index;\n                return newElement.isEqualNode(existingTag);\n            })) {\n                oldTags.splice(indexToDelete, 1);\n            } else {\n                newTags.push(newElement);\n            }\n        });\n    }\n\n    oldTags.forEach(function (tag) {\n        return tag.parentNode.removeChild(tag);\n    });\n    newTags.forEach(function (tag) {\n        return headElement.appendChild(tag);\n    });\n\n    return {\n        oldTags: oldTags,\n        newTags: newTags\n    };\n};\n\nvar generateElementAttributesAsString = function generateElementAttributesAsString(attributes) {\n    return Object.keys(attributes).reduce(function (str, key) {\n        var attr = typeof attributes[key] !== \"undefined\" ? key + \"=\\\"\" + attributes[key] + \"\\\"\" : \"\" + key;\n        return str ? str + \" \" + attr : attr;\n    }, \"\");\n};\n\nvar generateTitleAsString = function generateTitleAsString(type, title, attributes, encode) {\n    var attributeString = generateElementAttributesAsString(attributes);\n    var flattenedTitle = flattenArray(title);\n    return attributeString ? \"<\" + type + \" \" + HELMET_ATTRIBUTE + \"=\\\"true\\\" \" + attributeString + \">\" + encodeSpecialCharacters(flattenedTitle, encode) + \"</\" + type + \">\" : \"<\" + type + \" \" + HELMET_ATTRIBUTE + \"=\\\"true\\\">\" + encodeSpecialCharacters(flattenedTitle, encode) + \"</\" + type + \">\";\n};\n\nvar generateTagsAsString = function generateTagsAsString(type, tags, encode) {\n    return tags.reduce(function (str, tag) {\n        var attributeHtml = Object.keys(tag).filter(function (attribute) {\n            return !(attribute === TAG_PROPERTIES.INNER_HTML || attribute === TAG_PROPERTIES.CSS_TEXT);\n        }).reduce(function (string, attribute) {\n            var attr = typeof tag[attribute] === \"undefined\" ? attribute : attribute + \"=\\\"\" + encodeSpecialCharacters(tag[attribute], encode) + \"\\\"\";\n            return string ? string + \" \" + attr : attr;\n        }, \"\");\n\n        var tagContent = tag.innerHTML || tag.cssText || \"\";\n\n        var isSelfClosing = SELF_CLOSING_TAGS.indexOf(type) === -1;\n\n        return str + \"<\" + type + \" \" + HELMET_ATTRIBUTE + \"=\\\"true\\\" \" + attributeHtml + (isSelfClosing ? \"/>\" : \">\" + tagContent + \"</\" + type + \">\");\n    }, \"\");\n};\n\nvar convertElementAttributestoReactProps = function convertElementAttributestoReactProps(attributes) {\n    var initProps = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n    return Object.keys(attributes).reduce(function (obj, key) {\n        obj[REACT_TAG_MAP[key] || key] = attributes[key];\n        return obj;\n    }, initProps);\n};\n\nvar convertReactPropstoHtmlAttributes = function convertReactPropstoHtmlAttributes(props) {\n    var initAttributes = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n    return Object.keys(props).reduce(function (obj, key) {\n        obj[HTML_TAG_MAP[key] || key] = props[key];\n        return obj;\n    }, initAttributes);\n};\n\nvar generateTitleAsReactComponent = function generateTitleAsReactComponent(type, title, attributes) {\n    var _initProps;\n\n    // assigning into an array to define toString function on it\n    var initProps = (_initProps = {\n        key: title\n    }, _initProps[HELMET_ATTRIBUTE] = true, _initProps);\n    var props = convertElementAttributestoReactProps(attributes, initProps);\n\n    return [React.createElement(TAG_NAMES.TITLE, props, title)];\n};\n\nvar generateTagsAsReactComponent = function generateTagsAsReactComponent(type, tags) {\n    return tags.map(function (tag, i) {\n        var _mappedTag;\n\n        var mappedTag = (_mappedTag = {\n            key: i\n        }, _mappedTag[HELMET_ATTRIBUTE] = true, _mappedTag);\n\n        Object.keys(tag).forEach(function (attribute) {\n            var mappedAttribute = REACT_TAG_MAP[attribute] || attribute;\n\n            if (mappedAttribute === TAG_PROPERTIES.INNER_HTML || mappedAttribute === TAG_PROPERTIES.CSS_TEXT) {\n                var content = tag.innerHTML || tag.cssText;\n                mappedTag.dangerouslySetInnerHTML = { __html: content };\n            } else {\n                mappedTag[mappedAttribute] = tag[attribute];\n            }\n        });\n\n        return React.createElement(type, mappedTag);\n    });\n};\n\nvar getMethodsForTag = function getMethodsForTag(type, tags, encode) {\n    switch (type) {\n        case TAG_NAMES.TITLE:\n            return {\n                toComponent: function toComponent() {\n                    return generateTitleAsReactComponent(type, tags.title, tags.titleAttributes, encode);\n                },\n                toString: function toString() {\n                    return generateTitleAsString(type, tags.title, tags.titleAttributes, encode);\n                }\n            };\n        case ATTRIBUTE_NAMES.BODY:\n        case ATTRIBUTE_NAMES.HTML:\n            return {\n                toComponent: function toComponent() {\n                    return convertElementAttributestoReactProps(tags);\n                },\n                toString: function toString() {\n                    return generateElementAttributesAsString(tags);\n                }\n            };\n        default:\n            return {\n                toComponent: function toComponent() {\n                    return generateTagsAsReactComponent(type, tags);\n                },\n                toString: function toString() {\n                    return generateTagsAsString(type, tags, encode);\n                }\n            };\n    }\n};\n\nvar mapStateOnServer = function mapStateOnServer(_ref) {\n    var baseTag = _ref.baseTag,\n        bodyAttributes = _ref.bodyAttributes,\n        encode = _ref.encode,\n        htmlAttributes = _ref.htmlAttributes,\n        linkTags = _ref.linkTags,\n        metaTags = _ref.metaTags,\n        noscriptTags = _ref.noscriptTags,\n        scriptTags = _ref.scriptTags,\n        styleTags = _ref.styleTags,\n        _ref$title = _ref.title,\n        title = _ref$title === undefined ? \"\" : _ref$title,\n        titleAttributes = _ref.titleAttributes;\n    return {\n        base: getMethodsForTag(TAG_NAMES.BASE, baseTag, encode),\n        bodyAttributes: getMethodsForTag(ATTRIBUTE_NAMES.BODY, bodyAttributes, encode),\n        htmlAttributes: getMethodsForTag(ATTRIBUTE_NAMES.HTML, htmlAttributes, encode),\n        link: getMethodsForTag(TAG_NAMES.LINK, linkTags, encode),\n        meta: getMethodsForTag(TAG_NAMES.META, metaTags, encode),\n        noscript: getMethodsForTag(TAG_NAMES.NOSCRIPT, noscriptTags, encode),\n        script: getMethodsForTag(TAG_NAMES.SCRIPT, scriptTags, encode),\n        style: getMethodsForTag(TAG_NAMES.STYLE, styleTags, encode),\n        title: getMethodsForTag(TAG_NAMES.TITLE, { title: title, titleAttributes: titleAttributes }, encode)\n    };\n};\n\nvar Helmet = function Helmet(Component) {\n    var _class, _temp;\n\n    return _temp = _class = function (_React$Component) {\n        inherits(HelmetWrapper, _React$Component);\n\n        function HelmetWrapper() {\n            classCallCheck(this, HelmetWrapper);\n            return possibleConstructorReturn(this, _React$Component.apply(this, arguments));\n        }\n\n        HelmetWrapper.prototype.shouldComponentUpdate = function shouldComponentUpdate(nextProps) {\n            return !isEqual(this.props, nextProps);\n        };\n\n        HelmetWrapper.prototype.mapNestedChildrenToProps = function mapNestedChildrenToProps(child, nestedChildren) {\n            if (!nestedChildren) {\n                return null;\n            }\n\n            switch (child.type) {\n                case TAG_NAMES.SCRIPT:\n                case TAG_NAMES.NOSCRIPT:\n                    return {\n                        innerHTML: nestedChildren\n                    };\n\n                case TAG_NAMES.STYLE:\n                    return {\n                        cssText: nestedChildren\n                    };\n            }\n\n            throw new Error(\"<\" + child.type + \" /> elements are self-closing and can not contain children. Refer to our API for more information.\");\n        };\n\n        HelmetWrapper.prototype.flattenArrayTypeChildren = function flattenArrayTypeChildren(_ref) {\n            var _babelHelpers$extends;\n\n            var child = _ref.child,\n                arrayTypeChildren = _ref.arrayTypeChildren,\n                newChildProps = _ref.newChildProps,\n                nestedChildren = _ref.nestedChildren;\n\n            return _extends({}, arrayTypeChildren, (_babelHelpers$extends = {}, _babelHelpers$extends[child.type] = [].concat(arrayTypeChildren[child.type] || [], [_extends({}, newChildProps, this.mapNestedChildrenToProps(child, nestedChildren))]), _babelHelpers$extends));\n        };\n\n        HelmetWrapper.prototype.mapObjectTypeChildren = function mapObjectTypeChildren(_ref2) {\n            var _babelHelpers$extends2, _babelHelpers$extends3;\n\n            var child = _ref2.child,\n                newProps = _ref2.newProps,\n                newChildProps = _ref2.newChildProps,\n                nestedChildren = _ref2.nestedChildren;\n\n            switch (child.type) {\n                case TAG_NAMES.TITLE:\n                    return _extends({}, newProps, (_babelHelpers$extends2 = {}, _babelHelpers$extends2[child.type] = nestedChildren, _babelHelpers$extends2.titleAttributes = _extends({}, newChildProps), _babelHelpers$extends2));\n\n                case TAG_NAMES.BODY:\n                    return _extends({}, newProps, {\n                        bodyAttributes: _extends({}, newChildProps)\n                    });\n\n                case TAG_NAMES.HTML:\n                    return _extends({}, newProps, {\n                        htmlAttributes: _extends({}, newChildProps)\n                    });\n            }\n\n            return _extends({}, newProps, (_babelHelpers$extends3 = {}, _babelHelpers$extends3[child.type] = _extends({}, newChildProps), _babelHelpers$extends3));\n        };\n\n        HelmetWrapper.prototype.mapArrayTypeChildrenToProps = function mapArrayTypeChildrenToProps(arrayTypeChildren, newProps) {\n            var newFlattenedProps = _extends({}, newProps);\n\n            Object.keys(arrayTypeChildren).forEach(function (arrayChildName) {\n                var _babelHelpers$extends4;\n\n                newFlattenedProps = _extends({}, newFlattenedProps, (_babelHelpers$extends4 = {}, _babelHelpers$extends4[arrayChildName] = arrayTypeChildren[arrayChildName], _babelHelpers$extends4));\n            });\n\n            return newFlattenedProps;\n        };\n\n        HelmetWrapper.prototype.warnOnInvalidChildren = function warnOnInvalidChildren(child, nestedChildren) {\n            if (process.env.NODE_ENV !== \"production\") {\n                if (!VALID_TAG_NAMES.some(function (name) {\n                    return child.type === name;\n                })) {\n                    if (typeof child.type === \"function\") {\n                        return warn(\"You may be attempting to nest <Helmet> components within each other, which is not allowed. Refer to our API for more information.\");\n                    }\n\n                    return warn(\"Only elements types \" + VALID_TAG_NAMES.join(\", \") + \" are allowed. Helmet does not support rendering <\" + child.type + \"> elements. Refer to our API for more information.\");\n                }\n\n                if (nestedChildren && typeof nestedChildren !== \"string\" && (!Array.isArray(nestedChildren) || nestedChildren.some(function (nestedChild) {\n                    return typeof nestedChild !== \"string\";\n                }))) {\n                    throw new Error(\"Helmet expects a string as a child of <\" + child.type + \">. Did you forget to wrap your children in braces? ( <\" + child.type + \">{``}</\" + child.type + \"> ) Refer to our API for more information.\");\n                }\n            }\n\n            return true;\n        };\n\n        HelmetWrapper.prototype.mapChildrenToProps = function mapChildrenToProps(children, newProps) {\n            var _this2 = this;\n\n            var arrayTypeChildren = {};\n\n            React.Children.forEach(children, function (child) {\n                if (!child || !child.props) {\n                    return;\n                }\n\n                var _child$props = child.props,\n                    nestedChildren = _child$props.children,\n                    childProps = objectWithoutProperties(_child$props, [\"children\"]);\n\n                var newChildProps = convertReactPropstoHtmlAttributes(childProps);\n\n                _this2.warnOnInvalidChildren(child, nestedChildren);\n\n                switch (child.type) {\n                    case TAG_NAMES.LINK:\n                    case TAG_NAMES.META:\n                    case TAG_NAMES.NOSCRIPT:\n                    case TAG_NAMES.SCRIPT:\n                    case TAG_NAMES.STYLE:\n                        arrayTypeChildren = _this2.flattenArrayTypeChildren({\n                            child: child,\n                            arrayTypeChildren: arrayTypeChildren,\n                            newChildProps: newChildProps,\n                            nestedChildren: nestedChildren\n                        });\n                        break;\n\n                    default:\n                        newProps = _this2.mapObjectTypeChildren({\n                            child: child,\n                            newProps: newProps,\n                            newChildProps: newChildProps,\n                            nestedChildren: nestedChildren\n                        });\n                        break;\n                }\n            });\n\n            newProps = this.mapArrayTypeChildrenToProps(arrayTypeChildren, newProps);\n            return newProps;\n        };\n\n        HelmetWrapper.prototype.render = function render() {\n            var _props = this.props,\n                children = _props.children,\n                props = objectWithoutProperties(_props, [\"children\"]);\n\n            var newProps = _extends({}, props);\n\n            if (children) {\n                newProps = this.mapChildrenToProps(children, newProps);\n            }\n\n            return React.createElement(Component, newProps);\n        };\n\n        createClass(HelmetWrapper, null, [{\n            key: \"canUseDOM\",\n\n\n            // Component.peek comes from react-side-effect:\n            // For testing, you may use a static peek() method available on the returned component.\n            // It lets you get the current state without resetting the mounted instance stack.\n            // Don’t use it for anything other than testing.\n\n            /**\n             * @param {Object} base: {\"target\": \"_blank\", \"href\": \"http://mysite.com/\"}\n             * @param {Object} bodyAttributes: {\"className\": \"root\"}\n             * @param {String} defaultTitle: \"Default Title\"\n             * @param {Boolean} defer: true\n             * @param {Boolean} encodeSpecialCharacters: true\n             * @param {Object} htmlAttributes: {\"lang\": \"en\", \"amp\": undefined}\n             * @param {Array} link: [{\"rel\": \"canonical\", \"href\": \"http://mysite.com/example\"}]\n             * @param {Array} meta: [{\"name\": \"description\", \"content\": \"Test description\"}]\n             * @param {Array} noscript: [{\"innerHTML\": \"<img src='http://mysite.com/js/test.js'\"}]\n             * @param {Function} onChangeClientState: \"(newState) => console.log(newState)\"\n             * @param {Array} script: [{\"type\": \"text/javascript\", \"src\": \"http://mysite.com/js/test.js\"}]\n             * @param {Array} style: [{\"type\": \"text/css\", \"cssText\": \"div { display: block; color: blue; }\"}]\n             * @param {String} title: \"Title\"\n             * @param {Object} titleAttributes: {\"itemprop\": \"name\"}\n             * @param {String} titleTemplate: \"MySite.com - %s\"\n             */\n            set: function set$$1(canUseDOM) {\n                Component.canUseDOM = canUseDOM;\n            }\n        }]);\n        return HelmetWrapper;\n    }(React.Component), _class.propTypes = {\n        base: PropTypes.object,\n        bodyAttributes: PropTypes.object,\n        children: PropTypes.oneOfType([PropTypes.arrayOf(PropTypes.node), PropTypes.node]),\n        defaultTitle: PropTypes.string,\n        defer: PropTypes.bool,\n        encodeSpecialCharacters: PropTypes.bool,\n        htmlAttributes: PropTypes.object,\n        link: PropTypes.arrayOf(PropTypes.object),\n        meta: PropTypes.arrayOf(PropTypes.object),\n        noscript: PropTypes.arrayOf(PropTypes.object),\n        onChangeClientState: PropTypes.func,\n        script: PropTypes.arrayOf(PropTypes.object),\n        style: PropTypes.arrayOf(PropTypes.object),\n        title: PropTypes.string,\n        titleAttributes: PropTypes.object,\n        titleTemplate: PropTypes.string\n    }, _class.defaultProps = {\n        defer: true,\n        encodeSpecialCharacters: true\n    }, _class.peek = Component.peek, _class.rewind = function () {\n        var mappedState = Component.rewind();\n        if (!mappedState) {\n            // provide fallback if mappedState is undefined\n            mappedState = mapStateOnServer({\n                baseTag: [],\n                bodyAttributes: {},\n                encodeSpecialCharacters: true,\n                htmlAttributes: {},\n                linkTags: [],\n                metaTags: [],\n                noscriptTags: [],\n                scriptTags: [],\n                styleTags: [],\n                title: \"\",\n                titleAttributes: {}\n            });\n        }\n\n        return mappedState;\n    }, _temp;\n};\n\nvar NullComponent = function NullComponent() {\n    return null;\n};\n\nvar HelmetSideEffects = withSideEffect(reducePropsToState, handleClientStateChange, mapStateOnServer)(NullComponent);\n\nvar HelmetExport = Helmet(HelmetSideEffects);\nHelmetExport.renderStatic = HelmetExport.rewind;\n\nexport default HelmetExport;\nexport { HelmetExport as Helmet };\n","import arrayLikeToArray from \"./arrayLikeToArray.js\";\nexport default function _unsupportedIterableToArray(o, minLen) {\n  if (!o) return;\n  if (typeof o === \"string\") return arrayLikeToArray(o, minLen);\n  var n = Object.prototype.toString.call(o).slice(8, -1);\n  if (n === \"Object\" && o.constructor) n = o.constructor.name;\n  if (n === \"Map\" || n === \"Set\") return Array.from(o);\n  if (n === \"Arguments\" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return arrayLikeToArray(o, minLen);\n}","import createTheme from './createTheme';\nvar defaultTheme = createTheme();\nexport default defaultTheme;","/* eslint-disable react-hooks/rules-of-hooks, react-hooks/exhaustive-deps */\nimport * as React from 'react';\nexport default function useControlled(_ref) {\n  var controlled = _ref.controlled,\n      defaultProp = _ref.default,\n      name = _ref.name,\n      _ref$state = _ref.state,\n      state = _ref$state === void 0 ? 'value' : _ref$state;\n\n  var _React$useRef = React.useRef(controlled !== undefined),\n      isControlled = _React$useRef.current;\n\n  var _React$useState = React.useState(defaultProp),\n      valueState = _React$useState[0],\n      setValue = _React$useState[1];\n\n  var value = isControlled ? controlled : valueState;\n\n  if (process.env.NODE_ENV !== 'production') {\n    React.useEffect(function () {\n      if (isControlled !== (controlled !== undefined)) {\n        console.error([\"Material-UI: A component is changing the \".concat(isControlled ? '' : 'un', \"controlled \").concat(state, \" state of \").concat(name, \" to be \").concat(isControlled ? 'un' : '', \"controlled.\"), 'Elements should not switch from uncontrolled to controlled (or vice versa).', \"Decide between using a controlled or uncontrolled \".concat(name, \" \") + 'element for the lifetime of the component.', \"The nature of the state is determined during the first render, it's considered controlled if the value is not `undefined`.\", 'More info: https://fb.me/react-controlled-components'].join('\\n'));\n      }\n    }, [controlled]);\n\n    var _React$useRef2 = React.useRef(defaultProp),\n        defaultValue = _React$useRef2.current;\n\n    React.useEffect(function () {\n      if (!isControlled && defaultValue !== defaultProp) {\n        console.error([\"Material-UI: A component is changing the default \".concat(state, \" state of an uncontrolled \").concat(name, \" after being initialized. \") + \"To suppress this warning opt to use a controlled \".concat(name, \".\")].join('\\n'));\n      }\n    }, [JSON.stringify(defaultProp)]);\n  }\n\n  var setValueIfUncontrolled = React.useCallback(function (newValue) {\n    if (!isControlled) {\n      setValue(newValue);\n    }\n  }, []);\n  return [value, setValueIfUncontrolled];\n}","// based on https://github.com/WICG/focus-visible/blob/v4.1.5/src/focus-visible.js\nimport * as React from 'react';\nimport * as ReactDOM from 'react-dom';\nvar hadKeyboardEvent = true;\nvar hadFocusVisibleRecently = false;\nvar hadFocusVisibleRecentlyTimeout = null;\nvar inputTypesWhitelist = {\n  text: true,\n  search: true,\n  url: true,\n  tel: true,\n  email: true,\n  password: true,\n  number: true,\n  date: true,\n  month: true,\n  week: true,\n  time: true,\n  datetime: true,\n  'datetime-local': true\n};\n/**\n * Computes whether the given element should automatically trigger the\n * `focus-visible` class being added, i.e. whether it should always match\n * `:focus-visible` when focused.\n * @param {Element} node\n * @return {boolean}\n */\n\nfunction focusTriggersKeyboardModality(node) {\n  var type = node.type,\n      tagName = node.tagName;\n\n  if (tagName === 'INPUT' && inputTypesWhitelist[type] && !node.readOnly) {\n    return true;\n  }\n\n  if (tagName === 'TEXTAREA' && !node.readOnly) {\n    return true;\n  }\n\n  if (node.isContentEditable) {\n    return true;\n  }\n\n  return false;\n}\n/**\n * Keep track of our keyboard modality state with `hadKeyboardEvent`.\n * If the most recent user interaction was via the keyboard;\n * and the key press did not include a meta, alt/option, or control key;\n * then the modality is keyboard. Otherwise, the modality is not keyboard.\n * @param {KeyboardEvent} event\n */\n\n\nfunction handleKeyDown(event) {\n  if (event.metaKey || event.altKey || event.ctrlKey) {\n    return;\n  }\n\n  hadKeyboardEvent = true;\n}\n/**\n * If at any point a user clicks with a pointing device, ensure that we change\n * the modality away from keyboard.\n * This avoids the situation where a user presses a key on an already focused\n * element, and then clicks on a different element, focusing it with a\n * pointing device, while we still think we're in keyboard modality.\n */\n\n\nfunction handlePointerDown() {\n  hadKeyboardEvent = false;\n}\n\nfunction handleVisibilityChange() {\n  if (this.visibilityState === 'hidden') {\n    // If the tab becomes active again, the browser will handle calling focus\n    // on the element (Safari actually calls it twice).\n    // If this tab change caused a blur on an element with focus-visible,\n    // re-apply the class when the user switches back to the tab.\n    if (hadFocusVisibleRecently) {\n      hadKeyboardEvent = true;\n    }\n  }\n}\n\nfunction prepare(doc) {\n  doc.addEventListener('keydown', handleKeyDown, true);\n  doc.addEventListener('mousedown', handlePointerDown, true);\n  doc.addEventListener('pointerdown', handlePointerDown, true);\n  doc.addEventListener('touchstart', handlePointerDown, true);\n  doc.addEventListener('visibilitychange', handleVisibilityChange, true);\n}\n\nexport function teardown(doc) {\n  doc.removeEventListener('keydown', handleKeyDown, true);\n  doc.removeEventListener('mousedown', handlePointerDown, true);\n  doc.removeEventListener('pointerdown', handlePointerDown, true);\n  doc.removeEventListener('touchstart', handlePointerDown, true);\n  doc.removeEventListener('visibilitychange', handleVisibilityChange, true);\n}\n\nfunction isFocusVisible(event) {\n  var target = event.target;\n\n  try {\n    return target.matches(':focus-visible');\n  } catch (error) {} // browsers not implementing :focus-visible will throw a SyntaxError\n  // we use our own heuristic for those browsers\n  // rethrow might be better if it's not the expected error but do we really\n  // want to crash if focus-visible malfunctioned?\n  // no need for validFocusTarget check. the user does that by attaching it to\n  // focusable events only\n\n\n  return hadKeyboardEvent || focusTriggersKeyboardModality(target);\n}\n/**\n * Should be called if a blur event is fired on a focus-visible element\n */\n\n\nfunction handleBlurVisible() {\n  // To detect a tab/window switch, we look for a blur event followed\n  // rapidly by a visibility change.\n  // If we don't see a visibility change within 100ms, it's probably a\n  // regular focus change.\n  hadFocusVisibleRecently = true;\n  window.clearTimeout(hadFocusVisibleRecentlyTimeout);\n  hadFocusVisibleRecentlyTimeout = window.setTimeout(function () {\n    hadFocusVisibleRecently = false;\n  }, 100);\n}\n\nexport default function useIsFocusVisible() {\n  var ref = React.useCallback(function (instance) {\n    var node = ReactDOM.findDOMNode(instance);\n\n    if (node != null) {\n      prepare(node.ownerDocument);\n    }\n  }, []);\n\n  if (process.env.NODE_ENV !== 'production') {\n    // eslint-disable-next-line react-hooks/rules-of-hooks\n    React.useDebugValue(isFocusVisible);\n  }\n\n  return {\n    isFocusVisible: isFocusVisible,\n    onBlurVisible: handleBlurVisible,\n    ref: ref\n  };\n}","export default function _setPrototypeOf(o, p) {\n  _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {\n    o.__proto__ = p;\n    return o;\n  };\n\n  return _setPrototypeOf(o, p);\n}","import $$observable from 'symbol-observable';\n\n/**\n * These are private action types reserved by Redux.\n * For any unknown actions, you must return the current state.\n * If the current state is undefined, you must return the initial state.\n * Do not reference these action types directly in your code.\n */\nvar randomString = function randomString() {\n  return Math.random().toString(36).substring(7).split('').join('.');\n};\n\nvar ActionTypes = {\n  INIT: \"@@redux/INIT\" + randomString(),\n  REPLACE: \"@@redux/REPLACE\" + randomString(),\n  PROBE_UNKNOWN_ACTION: function PROBE_UNKNOWN_ACTION() {\n    return \"@@redux/PROBE_UNKNOWN_ACTION\" + randomString();\n  }\n};\n\n/**\n * @param {any} obj The object to inspect.\n * @returns {boolean} True if the argument appears to be a plain object.\n */\nfunction isPlainObject(obj) {\n  if (typeof obj !== 'object' || obj === null) return false;\n  var proto = obj;\n\n  while (Object.getPrototypeOf(proto) !== null) {\n    proto = Object.getPrototypeOf(proto);\n  }\n\n  return Object.getPrototypeOf(obj) === proto;\n}\n\n/**\n * Creates a Redux store that holds the state tree.\n * The only way to change the data in the store is to call `dispatch()` on it.\n *\n * There should only be a single store in your app. To specify how different\n * parts of the state tree respond to actions, you may combine several reducers\n * into a single reducer function by using `combineReducers`.\n *\n * @param {Function} reducer A function that returns the next state tree, given\n * the current state tree and the action to handle.\n *\n * @param {any} [preloadedState] The initial state. You may optionally specify it\n * to hydrate the state from the server in universal apps, or to restore a\n * previously serialized user session.\n * If you use `combineReducers` to produce the root reducer function, this must be\n * an object with the same shape as `combineReducers` keys.\n *\n * @param {Function} [enhancer] The store enhancer. You may optionally specify it\n * to enhance the store with third-party capabilities such as middleware,\n * time travel, persistence, etc. The only store enhancer that ships with Redux\n * is `applyMiddleware()`.\n *\n * @returns {Store} A Redux store that lets you read the state, dispatch actions\n * and subscribe to changes.\n */\n\nfunction createStore(reducer, preloadedState, enhancer) {\n  var _ref2;\n\n  if (typeof preloadedState === 'function' && typeof enhancer === 'function' || typeof enhancer === 'function' && typeof arguments[3] === 'function') {\n    throw new Error('It looks like you are passing several store enhancers to ' + 'createStore(). This is not supported. Instead, compose them ' + 'together to a single function.');\n  }\n\n  if (typeof preloadedState === 'function' && typeof enhancer === 'undefined') {\n    enhancer = preloadedState;\n    preloadedState = undefined;\n  }\n\n  if (typeof enhancer !== 'undefined') {\n    if (typeof enhancer !== 'function') {\n      throw new Error('Expected the enhancer to be a function.');\n    }\n\n    return enhancer(createStore)(reducer, preloadedState);\n  }\n\n  if (typeof reducer !== 'function') {\n    throw new Error('Expected the reducer to be a function.');\n  }\n\n  var currentReducer = reducer;\n  var currentState = preloadedState;\n  var currentListeners = [];\n  var nextListeners = currentListeners;\n  var isDispatching = false;\n  /**\n   * This makes a shallow copy of currentListeners so we can use\n   * nextListeners as a temporary list while dispatching.\n   *\n   * This prevents any bugs around consumers calling\n   * subscribe/unsubscribe in the middle of a dispatch.\n   */\n\n  function ensureCanMutateNextListeners() {\n    if (nextListeners === currentListeners) {\n      nextListeners = currentListeners.slice();\n    }\n  }\n  /**\n   * Reads the state tree managed by the store.\n   *\n   * @returns {any} The current state tree of your application.\n   */\n\n\n  function getState() {\n    if (isDispatching) {\n      throw new Error('You may not call store.getState() while the reducer is executing. ' + 'The reducer has already received the state as an argument. ' + 'Pass it down from the top reducer instead of reading it from the store.');\n    }\n\n    return currentState;\n  }\n  /**\n   * Adds a change listener. It will be called any time an action is dispatched,\n   * and some part of the state tree may potentially have changed. You may then\n   * call `getState()` to read the current state tree inside the callback.\n   *\n   * You may call `dispatch()` from a change listener, with the following\n   * caveats:\n   *\n   * 1. The subscriptions are snapshotted just before every `dispatch()` call.\n   * If you subscribe or unsubscribe while the listeners are being invoked, this\n   * will not have any effect on the `dispatch()` that is currently in progress.\n   * However, the next `dispatch()` call, whether nested or not, will use a more\n   * recent snapshot of the subscription list.\n   *\n   * 2. The listener should not expect to see all state changes, as the state\n   * might have been updated multiple times during a nested `dispatch()` before\n   * the listener is called. It is, however, guaranteed that all subscribers\n   * registered before the `dispatch()` started will be called with the latest\n   * state by the time it exits.\n   *\n   * @param {Function} listener A callback to be invoked on every dispatch.\n   * @returns {Function} A function to remove this change listener.\n   */\n\n\n  function subscribe(listener) {\n    if (typeof listener !== 'function') {\n      throw new Error('Expected the listener to be a function.');\n    }\n\n    if (isDispatching) {\n      throw new Error('You may not call store.subscribe() while the reducer is executing. ' + 'If you would like to be notified after the store has been updated, subscribe from a ' + 'component and invoke store.getState() in the callback to access the latest state. ' + 'See https://redux.js.org/api-reference/store#subscribelistener for more details.');\n    }\n\n    var isSubscribed = true;\n    ensureCanMutateNextListeners();\n    nextListeners.push(listener);\n    return function unsubscribe() {\n      if (!isSubscribed) {\n        return;\n      }\n\n      if (isDispatching) {\n        throw new Error('You may not unsubscribe from a store listener while the reducer is executing. ' + 'See https://redux.js.org/api-reference/store#subscribelistener for more details.');\n      }\n\n      isSubscribed = false;\n      ensureCanMutateNextListeners();\n      var index = nextListeners.indexOf(listener);\n      nextListeners.splice(index, 1);\n      currentListeners = null;\n    };\n  }\n  /**\n   * Dispatches an action. It is the only way to trigger a state change.\n   *\n   * The `reducer` function, used to create the store, will be called with the\n   * current state tree and the given `action`. Its return value will\n   * be considered the **next** state of the tree, and the change listeners\n   * will be notified.\n   *\n   * The base implementation only supports plain object actions. If you want to\n   * dispatch a Promise, an Observable, a thunk, or something else, you need to\n   * wrap your store creating function into the corresponding middleware. For\n   * example, see the documentation for the `redux-thunk` package. Even the\n   * middleware will eventually dispatch plain object actions using this method.\n   *\n   * @param {Object} action A plain object representing “what changed”. It is\n   * a good idea to keep actions serializable so you can record and replay user\n   * sessions, or use the time travelling `redux-devtools`. An action must have\n   * a `type` property which may not be `undefined`. It is a good idea to use\n   * string constants for action types.\n   *\n   * @returns {Object} For convenience, the same action object you dispatched.\n   *\n   * Note that, if you use a custom middleware, it may wrap `dispatch()` to\n   * return something else (for example, a Promise you can await).\n   */\n\n\n  function dispatch(action) {\n    if (!isPlainObject(action)) {\n      throw new Error('Actions must be plain objects. ' + 'Use custom middleware for async actions.');\n    }\n\n    if (typeof action.type === 'undefined') {\n      throw new Error('Actions may not have an undefined \"type\" property. ' + 'Have you misspelled a constant?');\n    }\n\n    if (isDispatching) {\n      throw new Error('Reducers may not dispatch actions.');\n    }\n\n    try {\n      isDispatching = true;\n      currentState = currentReducer(currentState, action);\n    } finally {\n      isDispatching = false;\n    }\n\n    var listeners = currentListeners = nextListeners;\n\n    for (var i = 0; i < listeners.length; i++) {\n      var listener = listeners[i];\n      listener();\n    }\n\n    return action;\n  }\n  /**\n   * Replaces the reducer currently used by the store to calculate the state.\n   *\n   * You might need this if your app implements code splitting and you want to\n   * load some of the reducers dynamically. You might also need this if you\n   * implement a hot reloading mechanism for Redux.\n   *\n   * @param {Function} nextReducer The reducer for the store to use instead.\n   * @returns {void}\n   */\n\n\n  function replaceReducer(nextReducer) {\n    if (typeof nextReducer !== 'function') {\n      throw new Error('Expected the nextReducer to be a function.');\n    }\n\n    currentReducer = nextReducer; // This action has a similiar effect to ActionTypes.INIT.\n    // Any reducers that existed in both the new and old rootReducer\n    // will receive the previous state. This effectively populates\n    // the new state tree with any relevant data from the old one.\n\n    dispatch({\n      type: ActionTypes.REPLACE\n    });\n  }\n  /**\n   * Interoperability point for observable/reactive libraries.\n   * @returns {observable} A minimal observable of state changes.\n   * For more information, see the observable proposal:\n   * https://github.com/tc39/proposal-observable\n   */\n\n\n  function observable() {\n    var _ref;\n\n    var outerSubscribe = subscribe;\n    return _ref = {\n      /**\n       * The minimal observable subscription method.\n       * @param {Object} observer Any object that can be used as an observer.\n       * The observer object should have a `next` method.\n       * @returns {subscription} An object with an `unsubscribe` method that can\n       * be used to unsubscribe the observable from the store, and prevent further\n       * emission of values from the observable.\n       */\n      subscribe: function subscribe(observer) {\n        if (typeof observer !== 'object' || observer === null) {\n          throw new TypeError('Expected the observer to be an object.');\n        }\n\n        function observeState() {\n          if (observer.next) {\n            observer.next(getState());\n          }\n        }\n\n        observeState();\n        var unsubscribe = outerSubscribe(observeState);\n        return {\n          unsubscribe: unsubscribe\n        };\n      }\n    }, _ref[$$observable] = function () {\n      return this;\n    }, _ref;\n  } // When a store is created, an \"INIT\" action is dispatched so that every\n  // reducer returns their initial state. This effectively populates\n  // the initial state tree.\n\n\n  dispatch({\n    type: ActionTypes.INIT\n  });\n  return _ref2 = {\n    dispatch: dispatch,\n    subscribe: subscribe,\n    getState: getState,\n    replaceReducer: replaceReducer\n  }, _ref2[$$observable] = observable, _ref2;\n}\n\n/**\n * Prints a warning in the console if it exists.\n *\n * @param {String} message The warning message.\n * @returns {void}\n */\nfunction warning(message) {\n  /* eslint-disable no-console */\n  if (typeof console !== 'undefined' && typeof console.error === 'function') {\n    console.error(message);\n  }\n  /* eslint-enable no-console */\n\n\n  try {\n    // This error was thrown as a convenience so that if you enable\n    // \"break on all exceptions\" in your console,\n    // it would pause the execution at this line.\n    throw new Error(message);\n  } catch (e) {} // eslint-disable-line no-empty\n\n}\n\nfunction getUndefinedStateErrorMessage(key, action) {\n  var actionType = action && action.type;\n  var actionDescription = actionType && \"action \\\"\" + String(actionType) + \"\\\"\" || 'an action';\n  return \"Given \" + actionDescription + \", reducer \\\"\" + key + \"\\\" returned undefined. \" + \"To ignore an action, you must explicitly return the previous state. \" + \"If you want this reducer to hold no value, you can return null instead of undefined.\";\n}\n\nfunction getUnexpectedStateShapeWarningMessage(inputState, reducers, action, unexpectedKeyCache) {\n  var reducerKeys = Object.keys(reducers);\n  var argumentName = action && action.type === ActionTypes.INIT ? 'preloadedState argument passed to createStore' : 'previous state received by the reducer';\n\n  if (reducerKeys.length === 0) {\n    return 'Store does not have a valid reducer. Make sure the argument passed ' + 'to combineReducers is an object whose values are reducers.';\n  }\n\n  if (!isPlainObject(inputState)) {\n    return \"The \" + argumentName + \" has unexpected type of \\\"\" + {}.toString.call(inputState).match(/\\s([a-z|A-Z]+)/)[1] + \"\\\". Expected argument to be an object with the following \" + (\"keys: \\\"\" + reducerKeys.join('\", \"') + \"\\\"\");\n  }\n\n  var unexpectedKeys = Object.keys(inputState).filter(function (key) {\n    return !reducers.hasOwnProperty(key) && !unexpectedKeyCache[key];\n  });\n  unexpectedKeys.forEach(function (key) {\n    unexpectedKeyCache[key] = true;\n  });\n  if (action && action.type === ActionTypes.REPLACE) return;\n\n  if (unexpectedKeys.length > 0) {\n    return \"Unexpected \" + (unexpectedKeys.length > 1 ? 'keys' : 'key') + \" \" + (\"\\\"\" + unexpectedKeys.join('\", \"') + \"\\\" found in \" + argumentName + \". \") + \"Expected to find one of the known reducer keys instead: \" + (\"\\\"\" + reducerKeys.join('\", \"') + \"\\\". Unexpected keys will be ignored.\");\n  }\n}\n\nfunction assertReducerShape(reducers) {\n  Object.keys(reducers).forEach(function (key) {\n    var reducer = reducers[key];\n    var initialState = reducer(undefined, {\n      type: ActionTypes.INIT\n    });\n\n    if (typeof initialState === 'undefined') {\n      throw new Error(\"Reducer \\\"\" + key + \"\\\" returned undefined during initialization. \" + \"If the state passed to the reducer is undefined, you must \" + \"explicitly return the initial state. The initial state may \" + \"not be undefined. If you don't want to set a value for this reducer, \" + \"you can use null instead of undefined.\");\n    }\n\n    if (typeof reducer(undefined, {\n      type: ActionTypes.PROBE_UNKNOWN_ACTION()\n    }) === 'undefined') {\n      throw new Error(\"Reducer \\\"\" + key + \"\\\" returned undefined when probed with a random type. \" + (\"Don't try to handle \" + ActionTypes.INIT + \" or other actions in \\\"redux/*\\\" \") + \"namespace. They are considered private. Instead, you must return the \" + \"current state for any unknown actions, unless it is undefined, \" + \"in which case you must return the initial state, regardless of the \" + \"action type. The initial state may not be undefined, but can be null.\");\n    }\n  });\n}\n/**\n * Turns an object whose values are different reducer functions, into a single\n * reducer function. It will call every child reducer, and gather their results\n * into a single state object, whose keys correspond to the keys of the passed\n * reducer functions.\n *\n * @param {Object} reducers An object whose values correspond to different\n * reducer functions that need to be combined into one. One handy way to obtain\n * it is to use ES6 `import * as reducers` syntax. The reducers may never return\n * undefined for any action. Instead, they should return their initial state\n * if the state passed to them was undefined, and the current state for any\n * unrecognized action.\n *\n * @returns {Function} A reducer function that invokes every reducer inside the\n * passed object, and builds a state object with the same shape.\n */\n\n\nfunction combineReducers(reducers) {\n  var reducerKeys = Object.keys(reducers);\n  var finalReducers = {};\n\n  for (var i = 0; i < reducerKeys.length; i++) {\n    var key = reducerKeys[i];\n\n    if (process.env.NODE_ENV !== 'production') {\n      if (typeof reducers[key] === 'undefined') {\n        warning(\"No reducer provided for key \\\"\" + key + \"\\\"\");\n      }\n    }\n\n    if (typeof reducers[key] === 'function') {\n      finalReducers[key] = reducers[key];\n    }\n  }\n\n  var finalReducerKeys = Object.keys(finalReducers); // This is used to make sure we don't warn about the same\n  // keys multiple times.\n\n  var unexpectedKeyCache;\n\n  if (process.env.NODE_ENV !== 'production') {\n    unexpectedKeyCache = {};\n  }\n\n  var shapeAssertionError;\n\n  try {\n    assertReducerShape(finalReducers);\n  } catch (e) {\n    shapeAssertionError = e;\n  }\n\n  return function combination(state, action) {\n    if (state === void 0) {\n      state = {};\n    }\n\n    if (shapeAssertionError) {\n      throw shapeAssertionError;\n    }\n\n    if (process.env.NODE_ENV !== 'production') {\n      var warningMessage = getUnexpectedStateShapeWarningMessage(state, finalReducers, action, unexpectedKeyCache);\n\n      if (warningMessage) {\n        warning(warningMessage);\n      }\n    }\n\n    var hasChanged = false;\n    var nextState = {};\n\n    for (var _i = 0; _i < finalReducerKeys.length; _i++) {\n      var _key = finalReducerKeys[_i];\n      var reducer = finalReducers[_key];\n      var previousStateForKey = state[_key];\n      var nextStateForKey = reducer(previousStateForKey, action);\n\n      if (typeof nextStateForKey === 'undefined') {\n        var errorMessage = getUndefinedStateErrorMessage(_key, action);\n        throw new Error(errorMessage);\n      }\n\n      nextState[_key] = nextStateForKey;\n      hasChanged = hasChanged || nextStateForKey !== previousStateForKey;\n    }\n\n    hasChanged = hasChanged || finalReducerKeys.length !== Object.keys(state).length;\n    return hasChanged ? nextState : state;\n  };\n}\n\nfunction bindActionCreator(actionCreator, dispatch) {\n  return function () {\n    return dispatch(actionCreator.apply(this, arguments));\n  };\n}\n/**\n * Turns an object whose values are action creators, into an object with the\n * same keys, but with every function wrapped into a `dispatch` call so they\n * may be invoked directly. This is just a convenience method, as you can call\n * `store.dispatch(MyActionCreators.doSomething())` yourself just fine.\n *\n * For convenience, you can also pass an action creator as the first argument,\n * and get a dispatch wrapped function in return.\n *\n * @param {Function|Object} actionCreators An object whose values are action\n * creator functions. One handy way to obtain it is to use ES6 `import * as`\n * syntax. You may also pass a single function.\n *\n * @param {Function} dispatch The `dispatch` function available on your Redux\n * store.\n *\n * @returns {Function|Object} The object mimicking the original object, but with\n * every action creator wrapped into the `dispatch` call. If you passed a\n * function as `actionCreators`, the return value will also be a single\n * function.\n */\n\n\nfunction bindActionCreators(actionCreators, dispatch) {\n  if (typeof actionCreators === 'function') {\n    return bindActionCreator(actionCreators, dispatch);\n  }\n\n  if (typeof actionCreators !== 'object' || actionCreators === null) {\n    throw new Error(\"bindActionCreators expected an object or a function, instead received \" + (actionCreators === null ? 'null' : typeof actionCreators) + \". \" + \"Did you write \\\"import ActionCreators from\\\" instead of \\\"import * as ActionCreators from\\\"?\");\n  }\n\n  var boundActionCreators = {};\n\n  for (var key in actionCreators) {\n    var actionCreator = actionCreators[key];\n\n    if (typeof actionCreator === 'function') {\n      boundActionCreators[key] = bindActionCreator(actionCreator, dispatch);\n    }\n  }\n\n  return boundActionCreators;\n}\n\nfunction _defineProperty(obj, key, value) {\n  if (key in obj) {\n    Object.defineProperty(obj, key, {\n      value: value,\n      enumerable: true,\n      configurable: true,\n      writable: true\n    });\n  } else {\n    obj[key] = value;\n  }\n\n  return obj;\n}\n\nfunction ownKeys(object, enumerableOnly) {\n  var keys = Object.keys(object);\n\n  if (Object.getOwnPropertySymbols) {\n    keys.push.apply(keys, Object.getOwnPropertySymbols(object));\n  }\n\n  if (enumerableOnly) keys = keys.filter(function (sym) {\n    return Object.getOwnPropertyDescriptor(object, sym).enumerable;\n  });\n  return keys;\n}\n\nfunction _objectSpread2(target) {\n  for (var i = 1; i < arguments.length; i++) {\n    var source = arguments[i] != null ? arguments[i] : {};\n\n    if (i % 2) {\n      ownKeys(source, true).forEach(function (key) {\n        _defineProperty(target, key, source[key]);\n      });\n    } else if (Object.getOwnPropertyDescriptors) {\n      Object.defineProperties(target, Object.getOwnPropertyDescriptors(source));\n    } else {\n      ownKeys(source).forEach(function (key) {\n        Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key));\n      });\n    }\n  }\n\n  return target;\n}\n\n/**\n * Composes single-argument functions from right to left. The rightmost\n * function can take multiple arguments as it provides the signature for\n * the resulting composite function.\n *\n * @param {...Function} funcs The functions to compose.\n * @returns {Function} A function obtained by composing the argument functions\n * from right to left. For example, compose(f, g, h) is identical to doing\n * (...args) => f(g(h(...args))).\n */\nfunction compose() {\n  for (var _len = arguments.length, funcs = new Array(_len), _key = 0; _key < _len; _key++) {\n    funcs[_key] = arguments[_key];\n  }\n\n  if (funcs.length === 0) {\n    return function (arg) {\n      return arg;\n    };\n  }\n\n  if (funcs.length === 1) {\n    return funcs[0];\n  }\n\n  return funcs.reduce(function (a, b) {\n    return function () {\n      return a(b.apply(void 0, arguments));\n    };\n  });\n}\n\n/**\n * Creates a store enhancer that applies middleware to the dispatch method\n * of the Redux store. This is handy for a variety of tasks, such as expressing\n * asynchronous actions in a concise manner, or logging every action payload.\n *\n * See `redux-thunk` package as an example of the Redux middleware.\n *\n * Because middleware is potentially asynchronous, this should be the first\n * store enhancer in the composition chain.\n *\n * Note that each middleware will be given the `dispatch` and `getState` functions\n * as named arguments.\n *\n * @param {...Function} middlewares The middleware chain to be applied.\n * @returns {Function} A store enhancer applying the middleware.\n */\n\nfunction applyMiddleware() {\n  for (var _len = arguments.length, middlewares = new Array(_len), _key = 0; _key < _len; _key++) {\n    middlewares[_key] = arguments[_key];\n  }\n\n  return function (createStore) {\n    return function () {\n      var store = createStore.apply(void 0, arguments);\n\n      var _dispatch = function dispatch() {\n        throw new Error('Dispatching while constructing your middleware is not allowed. ' + 'Other middleware would not be applied to this dispatch.');\n      };\n\n      var middlewareAPI = {\n        getState: store.getState,\n        dispatch: function dispatch() {\n          return _dispatch.apply(void 0, arguments);\n        }\n      };\n      var chain = middlewares.map(function (middleware) {\n        return middleware(middlewareAPI);\n      });\n      _dispatch = compose.apply(void 0, chain)(store.dispatch);\n      return _objectSpread2({}, store, {\n        dispatch: _dispatch\n      });\n    };\n  };\n}\n\n/*\n * This is a dummy function to check if the function name has been altered by minification.\n * If the function has been minified and NODE_ENV !== 'production', warn the user.\n */\n\nfunction isCrushed() {}\n\nif (process.env.NODE_ENV !== 'production' && typeof isCrushed.name === 'string' && isCrushed.name !== 'isCrushed') {\n  warning('You are currently using minified code outside of NODE_ENV === \"production\". ' + 'This means that you are running a slower development build of Redux. ' + 'You can use loose-envify (https://github.com/zertosh/loose-envify) for browserify ' + 'or setting mode to production in webpack (https://webpack.js.org/concepts/mode/) ' + 'to ensure you have the correct code for your production build.');\n}\n\nexport { ActionTypes as __DO_NOT_USE__ActionTypes, applyMiddleware, bindActionCreators, combineReducers, compose, createStore };\n","function _defineProperties(target, props) {\n  for (var i = 0; i < props.length; i++) {\n    var descriptor = props[i];\n    descriptor.enumerable = descriptor.enumerable || false;\n    descriptor.configurable = true;\n    if (\"value\" in descriptor) descriptor.writable = true;\n    Object.defineProperty(target, descriptor.key, descriptor);\n  }\n}\n\nexport default function _createClass(Constructor, protoProps, staticProps) {\n  if (protoProps) _defineProperties(Constructor.prototype, protoProps);\n  if (staticProps) _defineProperties(Constructor, staticProps);\n  return Constructor;\n}","import React from 'react';\nexport default React.createContext(null);","import * as React from 'react';\nexport default function isMuiElement(element, muiNames) {\n  return /*#__PURE__*/React.isValidElement(element) && muiNames.indexOf(element.type.muiName) !== -1;\n}","import * as React from 'react';\n/**\n * @ignore - internal component.\n */\n\nvar ListContext = React.createContext({});\n\nif (process.env.NODE_ENV !== 'production') {\n  ListContext.displayName = 'ListContext';\n}\n\nexport default ListContext;","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n\"use strict\";\r\nimport { objCreateFn, strShimUndefined } from \"@microsoft/applicationinsights-shims\";\r\nimport { _gblCookieMgr } from \"./CookieMgr\";\r\nimport { getWindow, getDocument, getPerformance, isIE } from \"./EnvUtils\";\r\nimport { arrForEach, arrIndexOf, arrMap, arrReduce, attachEvent, dateNow, detachEvent, hasOwnProperty, isArray, isBoolean, isDate, isError, isFunction, isNullOrUndefined, isNumber, isObject, isString, isTypeof, isUndefined, objDefineAccessors, objKeys, strTrim, toISOString } from \"./HelperFuncs\";\r\nimport { randomValue, random32, mwcRandomSeed, mwcRandom32 } from \"./RandomHelper\";\r\nvar strVisibilityChangeEvt = \"visibilitychange\";\r\nvar strPageHide = \"pagehide\";\r\nvar strPageShow = \"pageshow\";\r\nvar _cookieMgrs = null;\r\nvar _canUseCookies; // legacy supported config\r\n// Added to help with minfication\r\nexport var Undefined = strShimUndefined;\r\n/**\r\n * Trys to add an event handler for the specified event to the window, body and document\r\n * @param eventName {string} - The name of the event\r\n * @param callback {any} - The callback function that needs to be executed for the given event\r\n * @return {boolean} - true if the handler was successfully added\r\n */\r\nexport function addEventHandler(eventName, callback) {\r\n    var result = false;\r\n    var w = getWindow();\r\n    if (w) {\r\n        result = attachEvent(w, eventName, callback);\r\n        result = attachEvent(w[\"body\"], eventName, callback) || result;\r\n    }\r\n    var doc = getDocument();\r\n    if (doc) {\r\n        result = attachEvent(doc, eventName, callback) || result;\r\n    }\r\n    return result;\r\n}\r\n/**\r\n * Bind the listener to the array of events\r\n * @param events An string array of event names to bind the listener to\r\n * @param listener The event callback to call when the event is triggered\r\n * @param excludeEvents - [Optional] An array of events that should not be hooked (if possible), unless no other events can be.\r\n * @returns true - when at least one of the events was registered otherwise false\r\n */\r\nexport function addEventListeners(events, listener, excludeEvents) {\r\n    var added = false;\r\n    if (listener && events && isArray(events)) {\r\n        var excluded_1 = [];\r\n        arrForEach(events, function (name) {\r\n            if (isString(name)) {\r\n                if (!excludeEvents || arrIndexOf(excludeEvents, name) === -1) {\r\n                    added = addEventHandler(name, listener) || added;\r\n                }\r\n                else {\r\n                    excluded_1.push(name);\r\n                }\r\n            }\r\n        });\r\n        if (!added && excluded_1.length > 0) {\r\n            // Failed to add any listeners and we excluded some, so just attempt to add the excluded events\r\n            added = addEventListeners(excluded_1, listener);\r\n        }\r\n    }\r\n    return added;\r\n}\r\n/**\r\n * Listen to the 'beforeunload', 'unload' and 'pagehide' events which indicates a page unload is occurring,\r\n * this does NOT listen to the 'visibilitychange' event as while it does indicate that the page is being hidden\r\n * it does not *necessarily* mean that the page is being completely unloaded, it can mean that the user is\r\n * just navigating to a different Tab and may come back (without unloading the page). As such you may also\r\n * need to listen to the 'addPageHideEventListener' and 'addPageShowEventListener' events.\r\n * @param listener - The event callback to call when a page unload event is triggered\r\n * @param excludeEvents - [Optional] An array of events that should not be hooked, unless no other events can be.\r\n * @returns true - when at least one of the events was registered otherwise false\r\n */\r\nexport function addPageUnloadEventListener(listener, excludeEvents) {\r\n    // Hook the unload event for the document, window and body to ensure that the client events are flushed to the server\r\n    // As just hooking the window does not always fire (on chrome) for page navigation's.\r\n    return addEventListeners([\"beforeunload\", \"unload\", \"pagehide\"], listener, excludeEvents);\r\n}\r\n/**\r\n * Listen to the pagehide and visibility changing to 'hidden' events\r\n * @param listener - The event callback to call when a page hide event is triggered\r\n * @param excludeEvents - [Optional] An array of events that should not be hooked (if possible), unless no other events can be.\r\n * Suggestion: pass as true if you are also calling addPageUnloadEventListener as that also hooks pagehide\r\n * @returns true - when at least one of the events was registered otherwise false\r\n */\r\nexport function addPageHideEventListener(listener, excludeEvents) {\r\n    function _handlePageVisibility(evt) {\r\n        var doc = getDocument();\r\n        if (listener && doc && doc.visibilityState === \"hidden\") {\r\n            listener(evt);\r\n        }\r\n    }\r\n    var pageUnloadAdded = false;\r\n    if (!excludeEvents || arrIndexOf(excludeEvents, strPageHide) === -1) {\r\n        pageUnloadAdded = addEventHandler(strPageHide, listener);\r\n    }\r\n    if (!excludeEvents || arrIndexOf(excludeEvents, strVisibilityChangeEvt) === -1) {\r\n        pageUnloadAdded = addEventHandler(strVisibilityChangeEvt, _handlePageVisibility) || pageUnloadAdded;\r\n    }\r\n    if (!pageUnloadAdded && excludeEvents) {\r\n        // Failed to add any listeners and we where requested to exclude some, so just call again without excluding anything\r\n        pageUnloadAdded = addPageHideEventListener(listener);\r\n    }\r\n    return pageUnloadAdded;\r\n}\r\n/**\r\n * Listen to the pageshow and visibility changing to 'visible' events\r\n * @param listener - The event callback to call when a page is show event is triggered\r\n * @param excludeEvents - [Optional] An array of events that should not be hooked (if possible), unless no other events can be.\r\n * @returns true - when at least one of the events was registered otherwise false\r\n */\r\nexport function addPageShowEventListener(listener, excludeEvents) {\r\n    function _handlePageVisibility(evt) {\r\n        var doc = getDocument();\r\n        if (listener && doc && doc.visibilityState === \"visible\") {\r\n            listener(evt);\r\n        }\r\n    }\r\n    var pageShowAdded = false;\r\n    if (!excludeEvents || arrIndexOf(excludeEvents, strPageShow) === -1) {\r\n        pageShowAdded = addEventHandler(strPageShow, listener);\r\n    }\r\n    if (!excludeEvents || arrIndexOf(excludeEvents, strVisibilityChangeEvt) === -1) {\r\n        pageShowAdded = addEventHandler(strVisibilityChangeEvt, _handlePageVisibility) || pageShowAdded;\r\n    }\r\n    if (!pageShowAdded && excludeEvents) {\r\n        // Failed to add any listeners and we where requested to exclude some, so just call again without excluding anything\r\n        pageShowAdded = addPageShowEventListener(listener);\r\n    }\r\n    return pageShowAdded;\r\n}\r\nexport function newGuid() {\r\n    function randomHexDigit() {\r\n        return randomValue(15); // Get a random value from 0..15\r\n    }\r\n    return \"xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx\".replace(GuidRegex, function (c) {\r\n        var r = (randomHexDigit() | 0), v = (c === \"x\" ? r : r & 0x3 | 0x8);\r\n        return v.toString(16);\r\n    });\r\n}\r\n/**\r\n * Return the current value of the Performance Api now() function (if available) and fallback to dateNow() if it is unavailable (IE9 or less)\r\n * https://caniuse.com/#search=performance.now\r\n */\r\nexport function perfNow() {\r\n    var perf = getPerformance();\r\n    if (perf && perf.now) {\r\n        return perf.now();\r\n    }\r\n    return dateNow();\r\n}\r\n/**\r\n * Generate random base64 id string.\r\n * The default length is 22 which is 132-bits so almost the same as a GUID but as base64 (the previous default was 5)\r\n * @param maxLength - Optional value to specify the length of the id to be generated, defaults to 22\r\n */\r\nexport function newId(maxLength) {\r\n    if (maxLength === void 0) { maxLength = 22; }\r\n    var base64chars = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\r\n    // Start with an initial random number, consuming the value in reverse byte order\r\n    var number = random32() >>> 0; // Make sure it's a +ve number\r\n    var chars = 0;\r\n    var result = \"\";\r\n    while (result.length < maxLength) {\r\n        chars++;\r\n        result += base64chars.charAt(number & 0x3F);\r\n        number >>>= 6; // Zero fill with right shift\r\n        if (chars === 5) {\r\n            // 5 base64 characters === 30 bits so we don't have enough bits for another base64 char\r\n            // So add on another 30 bits and make sure it's +ve\r\n            number = (((random32() << 2) & 0xFFFFFFFF) | (number & 0x03)) >>> 0;\r\n            chars = 0; // We need to reset the number every 5 chars (30 bits)\r\n        }\r\n    }\r\n    return result;\r\n}\r\n/**\r\n * The strEndsWith() method determines whether a string ends with the characters of a specified string, returning true or false as appropriate.\r\n * @param value - The value to check whether it ends with the search value.\r\n * @param search - The characters to be searched for at the end of the value.\r\n * @returns true if the given search value is found at the end of the string, otherwise false.\r\n */\r\nexport function strEndsWith(value, search) {\r\n    if (value && search) {\r\n        var len = value.length;\r\n        var start = len - search.length;\r\n        return value.substring(start >= 0 ? start : 0, len) === search;\r\n    }\r\n    return false;\r\n}\r\n/**\r\n * generate W3C trace id\r\n */\r\nexport function generateW3CId() {\r\n    var hexValues = [\"0\", \"1\", \"2\", \"3\", \"4\", \"5\", \"6\", \"7\", \"8\", \"9\", \"a\", \"b\", \"c\", \"d\", \"e\", \"f\"];\r\n    // rfc4122 version 4 UUID without dashes and with lowercase letters\r\n    var oct = \"\", tmp;\r\n    for (var a = 0; a < 4; a++) {\r\n        tmp = random32();\r\n        oct +=\r\n            hexValues[tmp & 0xF] +\r\n                hexValues[tmp >> 4 & 0xF] +\r\n                hexValues[tmp >> 8 & 0xF] +\r\n                hexValues[tmp >> 12 & 0xF] +\r\n                hexValues[tmp >> 16 & 0xF] +\r\n                hexValues[tmp >> 20 & 0xF] +\r\n                hexValues[tmp >> 24 & 0xF] +\r\n                hexValues[tmp >> 28 & 0xF];\r\n    }\r\n    // \"Set the two most significant bits (bits 6 and 7) of the clock_seq_hi_and_reserved to zero and one, respectively\"\r\n    var clockSequenceHi = hexValues[8 + (random32() & 0x03) | 0];\r\n    return oct.substr(0, 8) + oct.substr(9, 4) + \"4\" + oct.substr(13, 3) + clockSequenceHi + oct.substr(16, 3) + oct.substr(19, 12);\r\n}\r\n/**\r\n * Provides a collection of utility functions, included for backward compatibility with previous releases.\r\n * @deprecated Marking this instance as deprecated in favor of direct usage of the helper functions\r\n * as direct usage provides better tree-shaking and minification by avoiding the inclusion of the unused items\r\n * in your resulting code.\r\n */\r\nexport var CoreUtils = {\r\n    _canUseCookies: undefined,\r\n    isTypeof: isTypeof,\r\n    isUndefined: isUndefined,\r\n    isNullOrUndefined: isNullOrUndefined,\r\n    hasOwnProperty: hasOwnProperty,\r\n    isFunction: isFunction,\r\n    isObject: isObject,\r\n    isDate: isDate,\r\n    isArray: isArray,\r\n    isError: isError,\r\n    isString: isString,\r\n    isNumber: isNumber,\r\n    isBoolean: isBoolean,\r\n    toISOString: toISOString,\r\n    arrForEach: arrForEach,\r\n    arrIndexOf: arrIndexOf,\r\n    arrMap: arrMap,\r\n    arrReduce: arrReduce,\r\n    strTrim: strTrim,\r\n    objCreate: objCreateFn,\r\n    objKeys: objKeys,\r\n    objDefineAccessors: objDefineAccessors,\r\n    addEventHandler: addEventHandler,\r\n    dateNow: dateNow,\r\n    isIE: isIE,\r\n    disableCookies: disableCookies,\r\n    newGuid: newGuid,\r\n    perfNow: perfNow,\r\n    newId: newId,\r\n    randomValue: randomValue,\r\n    random32: random32,\r\n    mwcRandomSeed: mwcRandomSeed,\r\n    mwcRandom32: mwcRandom32,\r\n    generateW3CId: generateW3CId\r\n};\r\nvar GuidRegex = /[xy]/g;\r\nexport var EventHelper = {\r\n    Attach: attachEvent,\r\n    AttachEvent: attachEvent,\r\n    Detach: detachEvent,\r\n    DetachEvent: detachEvent\r\n};\r\n/**\r\n * Helper to support backward compatibility for users that use the legacy cookie handling functions and the use the internal\r\n * CoreUtils._canUseCookies global flag to enable/disable cookies usage.\r\n * Note: This has the following deliberate side-effects\r\n * - Creates the global (legacy) cookie manager if it does not already exist\r\n * - Attempts to add \"listeners\" to the CoreUtils._canUseCookies property to support the legacy usage\r\n * @param config\r\n * @param logger\r\n * @returns\r\n */\r\nexport function _legacyCookieMgr(config, logger) {\r\n    var cookieMgr = _gblCookieMgr(config, logger);\r\n    var legacyCanUseCookies = CoreUtils._canUseCookies;\r\n    if (_cookieMgrs === null) {\r\n        _cookieMgrs = [];\r\n        _canUseCookies = legacyCanUseCookies;\r\n        // Dynamically create get/set property accessors for backward compatibility for enabling / disabling cookies\r\n        // this WILL NOT work for ES3 browsers (< IE8)\r\n        objDefineAccessors(CoreUtils, \"_canUseCookies\", function () {\r\n            return _canUseCookies;\r\n        }, function (value) {\r\n            _canUseCookies = value;\r\n            arrForEach(_cookieMgrs, function (mgr) {\r\n                mgr.setEnabled(value);\r\n            });\r\n        });\r\n    }\r\n    if (arrIndexOf(_cookieMgrs, cookieMgr) === -1) {\r\n        _cookieMgrs.push(cookieMgr);\r\n    }\r\n    if (isBoolean(legacyCanUseCookies)) {\r\n        cookieMgr.setEnabled(legacyCanUseCookies);\r\n    }\r\n    if (isBoolean(_canUseCookies)) {\r\n        cookieMgr.setEnabled(_canUseCookies);\r\n    }\r\n    return cookieMgr;\r\n}\r\n/**\r\n * @deprecated - Use the core.getCookieMgr().disable()\r\n * Force the SDK not to store and read any data from cookies.\r\n */\r\nexport function disableCookies() {\r\n    _legacyCookieMgr().setEnabled(false);\r\n}\r\n/**\r\n * @deprecated - Use the core.getCookieMgr().isEnabled()\r\n * Helper method to tell if document.cookie object is available and whether it can be used.\r\n */\r\nexport function canUseCookies(logger) {\r\n    return _legacyCookieMgr(null, logger).isEnabled();\r\n}\r\n/**\r\n * @deprecated - Use the core.getCookieMgr().get()\r\n * helper method to access userId and sessionId cookie\r\n */\r\nexport function getCookie(logger, name) {\r\n    return _legacyCookieMgr(null, logger).get(name);\r\n}\r\n/**\r\n * @deprecated - Use the core.getCookieMgr().set()\r\n * helper method to set userId and sessionId cookie\r\n */\r\nexport function setCookie(logger, name, value, domain) {\r\n    _legacyCookieMgr(null, logger).set(name, value, null, domain);\r\n}\r\n/**\r\n * @deprecated - Use the core.getCookieMgr().del()\r\n * Deletes a cookie by setting it's expiration time in the past.\r\n * @param name - The name of the cookie to delete.\r\n */\r\nexport function deleteCookie(logger, name) {\r\n    return _legacyCookieMgr(null, logger).del(name);\r\n}\r\n//# sourceMappingURL=CoreUtils.js.map","var Symbol = require('./_Symbol'),\n    getRawTag = require('./_getRawTag'),\n    objectToString = require('./_objectToString');\n\n/** `Object#toString` result references. */\nvar nullTag = '[object Null]',\n    undefinedTag = '[object Undefined]';\n\n/** Built-in value references. */\nvar symToStringTag = Symbol ? Symbol.toStringTag : undefined;\n\n/**\n * The base implementation of `getTag` without fallbacks for buggy environments.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\nfunction baseGetTag(value) {\n  if (value == null) {\n    return value === undefined ? undefinedTag : nullTag;\n  }\n  return (symToStringTag && symToStringTag in Object(value))\n    ? getRawTag(value)\n    : objectToString(value);\n}\n\nmodule.exports = baseGetTag;\n","/**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\nfunction isObjectLike(value) {\n  return value != null && typeof value == 'object';\n}\n\nmodule.exports = isObjectLike;\n","var baseToString = require('./_baseToString');\n\n/**\n * Converts `value` to a string. An empty string is returned for `null`\n * and `undefined` values. The sign of `-0` is preserved.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {string} Returns the converted string.\n * @example\n *\n * _.toString(null);\n * // => ''\n *\n * _.toString(-0);\n * // => '-0'\n *\n * _.toString([1, 2, 3]);\n * // => '1,2,3'\n */\nfunction toString(value) {\n  return value == null ? '' : baseToString(value);\n}\n\nmodule.exports = toString;\n","/*\nobject-assign\n(c) Sindre Sorhus\n@license MIT\n*/\n\n'use strict';\n/* eslint-disable no-unused-vars */\nvar getOwnPropertySymbols = Object.getOwnPropertySymbols;\nvar hasOwnProperty = Object.prototype.hasOwnProperty;\nvar propIsEnumerable = Object.prototype.propertyIsEnumerable;\n\nfunction toObject(val) {\n\tif (val === null || val === undefined) {\n\t\tthrow new TypeError('Object.assign cannot be called with null or undefined');\n\t}\n\n\treturn Object(val);\n}\n\nfunction shouldUseNative() {\n\ttry {\n\t\tif (!Object.assign) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Detect buggy property enumeration order in older V8 versions.\n\n\t\t// https://bugs.chromium.org/p/v8/issues/detail?id=4118\n\t\tvar test1 = new String('abc');  // eslint-disable-line no-new-wrappers\n\t\ttest1[5] = 'de';\n\t\tif (Object.getOwnPropertyNames(test1)[0] === '5') {\n\t\t\treturn false;\n\t\t}\n\n\t\t// https://bugs.chromium.org/p/v8/issues/detail?id=3056\n\t\tvar test2 = {};\n\t\tfor (var i = 0; i < 10; i++) {\n\t\t\ttest2['_' + String.fromCharCode(i)] = i;\n\t\t}\n\t\tvar order2 = Object.getOwnPropertyNames(test2).map(function (n) {\n\t\t\treturn test2[n];\n\t\t});\n\t\tif (order2.join('') !== '0123456789') {\n\t\t\treturn false;\n\t\t}\n\n\t\t// https://bugs.chromium.org/p/v8/issues/detail?id=3056\n\t\tvar test3 = {};\n\t\t'abcdefghijklmnopqrst'.split('').forEach(function (letter) {\n\t\t\ttest3[letter] = letter;\n\t\t});\n\t\tif (Object.keys(Object.assign({}, test3)).join('') !==\n\t\t\t\t'abcdefghijklmnopqrst') {\n\t\t\treturn false;\n\t\t}\n\n\t\treturn true;\n\t} catch (err) {\n\t\t// We don't expect any of the above to throw, but better to be safe.\n\t\treturn false;\n\t}\n}\n\nmodule.exports = shouldUseNative() ? Object.assign : function (target, source) {\n\tvar from;\n\tvar to = toObject(target);\n\tvar symbols;\n\n\tfor (var s = 1; s < arguments.length; s++) {\n\t\tfrom = Object(arguments[s]);\n\n\t\tfor (var key in from) {\n\t\t\tif (hasOwnProperty.call(from, key)) {\n\t\t\t\tto[key] = from[key];\n\t\t\t}\n\t\t}\n\n\t\tif (getOwnPropertySymbols) {\n\t\t\tsymbols = getOwnPropertySymbols(from);\n\t\t\tfor (var i = 0; i < symbols.length; i++) {\n\t\t\t\tif (propIsEnumerable.call(from, symbols[i])) {\n\t\t\t\t\tto[symbols[i]] = from[symbols[i]];\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn to;\n};\n","export default function _arrayLikeToArray(arr, len) {\n  if (len == null || len > arr.length) len = arr.length;\n\n  for (var i = 0, arr2 = new Array(len); i < len; i++) {\n    arr2[i] = arr[i];\n  }\n\n  return arr2;\n}","export default function _arrayLikeToArray(arr, len) {\n  if (len == null || len > arr.length) len = arr.length;\n\n  for (var i = 0, arr2 = new Array(len); i < len; i++) {\n    arr2[i] = arr[i];\n  }\n\n  return arr2;\n}","export default function _assertThisInitialized(self) {\n  if (self === void 0) {\n    throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n  }\n\n  return self;\n}","import { _InternalMessageId, LoggingSeverity } from \"../JavaScriptSDK.Enums/LoggingEnums\";\r\nimport { dumpObj, getDocument, getLocation, getNavigator, isIE } from \"./EnvUtils\";\r\nimport { arrForEach, dateNow, getExceptionName, isFunction, isNotNullOrUndefined, isNullOrUndefined, isString, isTruthy, isUndefined, objForEachKey, setValue, strContains, strEndsWith, strTrim } from \"./HelperFuncs\";\r\nvar strToGMTString = \"toGMTString\";\r\nvar strToUTCString = \"toUTCString\";\r\nvar strCookie = \"cookie\";\r\nvar strExpires = \"expires\";\r\nvar strEnabled = \"enabled\";\r\nvar strIsCookieUseDisabled = \"isCookieUseDisabled\";\r\nvar strDisableCookiesUsage = \"disableCookiesUsage\";\r\nvar strConfigCookieMgr = \"_ckMgr\";\r\nvar strEmpty = \"\";\r\nvar _supportsCookies = null;\r\nvar _allowUaSameSite = null;\r\nvar _parsedCookieValue = null;\r\nvar _doc = getDocument();\r\nvar _cookieCache = {};\r\nvar _globalCookieConfig = {};\r\n/**\r\n * @ignore\r\n * DO NOT USE or export from the module, this is exposed as public to support backward compatibility of previous static utility methods only.\r\n * If you want to manager cookies either use the ICookieMgr available from the core instance via getCookieMgr() or create\r\n * your own instance of the CookieMgr and use that.\r\n * Using this directly for enabling / disabling cookie handling will not only affect your usage but EVERY user of cookies.\r\n * Example, if you are using a shared component that is also using Application Insights you will affect their cookie handling.\r\n * @param logger - The DiagnosticLogger to use for reporting errors.\r\n */\r\nexport function _gblCookieMgr(config, logger) {\r\n    // Stash the global instance against the BaseCookieMgr class\r\n    var inst = createCookieMgr[strConfigCookieMgr] || _globalCookieConfig[strConfigCookieMgr];\r\n    if (!inst) {\r\n        // Note: not using the getSetValue() helper as that would require always creating a temporary cookieMgr\r\n        // that ultimately is never used\r\n        inst = createCookieMgr[strConfigCookieMgr] = createCookieMgr(config, logger);\r\n        _globalCookieConfig[strConfigCookieMgr] = inst;\r\n    }\r\n    return inst;\r\n}\r\nfunction _isMgrEnabled(cookieMgr) {\r\n    if (cookieMgr) {\r\n        return cookieMgr.isEnabled();\r\n    }\r\n    return true;\r\n}\r\nfunction _createCookieMgrConfig(rootConfig) {\r\n    var cookieMgrCfg = rootConfig.cookieCfg = rootConfig.cookieCfg || {};\r\n    // Sets the values from the root config if not already present on the cookieMgrCfg\r\n    setValue(cookieMgrCfg, \"domain\", rootConfig.cookieDomain, isNotNullOrUndefined, isNullOrUndefined);\r\n    setValue(cookieMgrCfg, \"path\", rootConfig.cookiePath || \"/\", null, isNullOrUndefined);\r\n    if (isNullOrUndefined(cookieMgrCfg[strEnabled])) {\r\n        // Set the enabled from the provided setting or the legacy root values\r\n        var cookieEnabled = void 0;\r\n        if (!isUndefined(rootConfig[strIsCookieUseDisabled])) {\r\n            cookieEnabled = !rootConfig[strIsCookieUseDisabled];\r\n        }\r\n        if (!isUndefined(rootConfig[strDisableCookiesUsage])) {\r\n            cookieEnabled = !rootConfig[strDisableCookiesUsage];\r\n        }\r\n        cookieMgrCfg[strEnabled] = cookieEnabled;\r\n    }\r\n    return cookieMgrCfg;\r\n}\r\n/**\r\n * Helper to return the ICookieMgr from the core (if not null/undefined) or a default implementation\r\n * associated with the configuration or a legacy default.\r\n * @param core\r\n * @param config\r\n * @returns\r\n */\r\nexport function safeGetCookieMgr(core, config) {\r\n    var cookieMgr;\r\n    if (core) {\r\n        // Always returns an instance\r\n        cookieMgr = core.getCookieMgr();\r\n    }\r\n    else if (config) {\r\n        var cookieCfg = config.cookieCfg;\r\n        if (cookieCfg[strConfigCookieMgr]) {\r\n            cookieMgr = cookieCfg[strConfigCookieMgr];\r\n        }\r\n        else {\r\n            cookieMgr = createCookieMgr(config);\r\n        }\r\n    }\r\n    if (!cookieMgr) {\r\n        // Get or initialize the default global (legacy) cookie manager if we couldn't find one\r\n        cookieMgr = _gblCookieMgr(config, (core || {}).logger);\r\n    }\r\n    return cookieMgr;\r\n}\r\nexport function createCookieMgr(rootConfig, logger) {\r\n    var cookieMgrConfig = _createCookieMgrConfig(rootConfig || _globalCookieConfig);\r\n    var _path = cookieMgrConfig.path || \"/\";\r\n    var _domain = cookieMgrConfig.domain;\r\n    // Explicitly checking against false, so that setting to undefined will === true\r\n    var _enabled = cookieMgrConfig[strEnabled] !== false;\r\n    var cookieMgr = {\r\n        isEnabled: function () {\r\n            var enabled = _enabled && areCookiesSupported(logger);\r\n            // Using an indirect lookup for any global cookie manager to support tree shaking for SDK's\r\n            // that don't use the \"applicationinsights-core\" version of the default cookie function\r\n            var gblManager = _globalCookieConfig[strConfigCookieMgr];\r\n            if (enabled && gblManager && cookieMgr !== gblManager) {\r\n                // Make sure the GlobalCookie Manager instance (if not this instance) is also enabled.\r\n                // As the global (deprecated) functions may have been called (for backward compatibility)\r\n                enabled = _isMgrEnabled(gblManager);\r\n            }\r\n            return enabled;\r\n        },\r\n        setEnabled: function (value) {\r\n            // Explicitly checking against false, so that setting to undefined will === true\r\n            _enabled = value !== false;\r\n        },\r\n        set: function (name, value, maxAgeSec, domain, path) {\r\n            var result = false;\r\n            if (_isMgrEnabled(cookieMgr)) {\r\n                var values = {};\r\n                var theValue = strTrim(value || strEmpty);\r\n                var idx = theValue.indexOf(\";\");\r\n                if (idx !== -1) {\r\n                    theValue = strTrim(value.substring(0, idx));\r\n                    values = _extractParts(value.substring(idx + 1));\r\n                }\r\n                // Only update domain if not already present (isUndefined) and the value is truthy (not null, undefined or empty string)\r\n                setValue(values, \"domain\", domain || _domain, isTruthy, isUndefined);\r\n                if (!isNullOrUndefined(maxAgeSec)) {\r\n                    var _isIE = isIE();\r\n                    if (isUndefined(values[strExpires])) {\r\n                        var nowMs = dateNow();\r\n                        // Only add expires if not already present\r\n                        var expireMs = nowMs + (maxAgeSec * 1000);\r\n                        // Sanity check, if zero or -ve then ignore\r\n                        if (expireMs > 0) {\r\n                            var expiry = new Date();\r\n                            expiry.setTime(expireMs);\r\n                            setValue(values, strExpires, _formatDate(expiry, !_isIE ? strToUTCString : strToGMTString) || _formatDate(expiry, _isIE ? strToGMTString : strToUTCString) || strEmpty, isTruthy);\r\n                        }\r\n                    }\r\n                    if (!_isIE) {\r\n                        // Only replace if not already present\r\n                        setValue(values, \"max-age\", strEmpty + maxAgeSec, null, isUndefined);\r\n                    }\r\n                }\r\n                var location_1 = getLocation();\r\n                if (location_1 && location_1.protocol === \"https:\") {\r\n                    setValue(values, \"secure\", null, null, isUndefined);\r\n                    // Only set same site if not also secure\r\n                    if (_allowUaSameSite === null) {\r\n                        _allowUaSameSite = !uaDisallowsSameSiteNone((getNavigator() || {}).userAgent);\r\n                    }\r\n                    if (_allowUaSameSite) {\r\n                        setValue(values, \"SameSite\", \"None\", null, isUndefined);\r\n                    }\r\n                }\r\n                setValue(values, \"path\", path || _path, null, isUndefined);\r\n                var setCookieFn = cookieMgrConfig.setCookie || _setCookieValue;\r\n                setCookieFn(name, _formatCookieValue(theValue, values));\r\n                result = true;\r\n            }\r\n            return result;\r\n        },\r\n        get: function (name) {\r\n            var value = strEmpty;\r\n            if (_isMgrEnabled(cookieMgr)) {\r\n                value = (cookieMgrConfig.getCookie || _getCookieValue)(name);\r\n            }\r\n            return value;\r\n        },\r\n        del: function (name, path) {\r\n            var result = false;\r\n            if (_isMgrEnabled(cookieMgr)) {\r\n                // Only remove the cookie if the manager and cookie support has not been disabled\r\n                result = cookieMgr.purge(name, path);\r\n            }\r\n            return result;\r\n        },\r\n        purge: function (name, path) {\r\n            var _a;\r\n            var result = false;\r\n            if (areCookiesSupported(logger)) {\r\n                // Setting the expiration date in the past immediately removes the cookie\r\n                var values = (_a = {},\r\n                    _a[\"path\"] = path ? path : \"/\",\r\n                    _a[strExpires] = \"Thu, 01 Jan 1970 00:00:01 GMT\",\r\n                    _a);\r\n                if (!isIE()) {\r\n                    // Set max age to expire now\r\n                    values[\"max-age\"] = \"0\";\r\n                }\r\n                var delCookie = cookieMgrConfig.delCookie || _setCookieValue;\r\n                delCookie(name, _formatCookieValue(strEmpty, values));\r\n                result = true;\r\n            }\r\n            return result;\r\n        }\r\n    };\r\n    // Associated this cookie manager with the config\r\n    cookieMgr[strConfigCookieMgr] = cookieMgr;\r\n    return cookieMgr;\r\n}\r\n/*\r\n* Helper method to tell if document.cookie object is supported by the runtime\r\n*/\r\nexport function areCookiesSupported(logger) {\r\n    if (_supportsCookies === null) {\r\n        _supportsCookies = false;\r\n        try {\r\n            var doc = _doc || {};\r\n            _supportsCookies = doc[strCookie] !== undefined;\r\n        }\r\n        catch (e) {\r\n            logger && logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.CannotAccessCookie, \"Cannot access document.cookie - \" + getExceptionName(e), { exception: dumpObj(e) });\r\n        }\r\n    }\r\n    return _supportsCookies;\r\n}\r\nfunction _extractParts(theValue) {\r\n    var values = {};\r\n    if (theValue && theValue.length) {\r\n        var parts = strTrim(theValue).split(\";\");\r\n        arrForEach(parts, function (thePart) {\r\n            thePart = strTrim(thePart || strEmpty);\r\n            if (thePart) {\r\n                var idx = thePart.indexOf(\"=\");\r\n                if (idx === -1) {\r\n                    values[thePart] = null;\r\n                }\r\n                else {\r\n                    values[strTrim(thePart.substring(0, idx))] = strTrim(thePart.substring(idx + 1));\r\n                }\r\n            }\r\n        });\r\n    }\r\n    return values;\r\n}\r\nfunction _formatDate(theDate, func) {\r\n    if (isFunction(theDate[func])) {\r\n        return theDate[func]();\r\n    }\r\n    return null;\r\n}\r\nfunction _formatCookieValue(value, values) {\r\n    var cookieValue = value || strEmpty;\r\n    objForEachKey(values, function (name, theValue) {\r\n        cookieValue += \"; \" + name + (!isNullOrUndefined(theValue) ? \"=\" + theValue : strEmpty);\r\n    });\r\n    return cookieValue;\r\n}\r\nfunction _getCookieValue(name) {\r\n    var cookieValue = strEmpty;\r\n    if (_doc) {\r\n        var theCookie = _doc[strCookie] || strEmpty;\r\n        if (_parsedCookieValue !== theCookie) {\r\n            _cookieCache = _extractParts(theCookie);\r\n            _parsedCookieValue = theCookie;\r\n        }\r\n        cookieValue = strTrim(_cookieCache[name] || strEmpty);\r\n    }\r\n    return cookieValue;\r\n}\r\nfunction _setCookieValue(name, cookieValue) {\r\n    if (_doc) {\r\n        _doc[strCookie] = name + \"=\" + cookieValue;\r\n    }\r\n}\r\nexport function uaDisallowsSameSiteNone(userAgent) {\r\n    if (!isString(userAgent)) {\r\n        return false;\r\n    }\r\n    // Cover all iOS based browsers here. This includes:\r\n    // - Safari on iOS 12 for iPhone, iPod Touch, iPad\r\n    // - WkWebview on iOS 12 for iPhone, iPod Touch, iPad\r\n    // - Chrome on iOS 12 for iPhone, iPod Touch, iPad\r\n    // All of which are broken by SameSite=None, because they use the iOS networking stack\r\n    if (strContains(userAgent, \"CPU iPhone OS 12\") || strContains(userAgent, \"iPad; CPU OS 12\")) {\r\n        return true;\r\n    }\r\n    // Cover Mac OS X based browsers that use the Mac OS networking stack. This includes:\r\n    // - Safari on Mac OS X\r\n    // This does not include:\r\n    // - Internal browser on Mac OS X\r\n    // - Chrome on Mac OS X\r\n    // - Chromium on Mac OS X\r\n    // Because they do not use the Mac OS networking stack.\r\n    if (strContains(userAgent, \"Macintosh; Intel Mac OS X 10_14\") && strContains(userAgent, \"Version/\") && strContains(userAgent, \"Safari\")) {\r\n        return true;\r\n    }\r\n    // Cover Mac OS X internal browsers that use the Mac OS networking stack. This includes:\r\n    // - Internal browser on Mac OS X\r\n    // This does not include:\r\n    // - Safari on Mac OS X\r\n    // - Chrome on Mac OS X\r\n    // - Chromium on Mac OS X\r\n    // Because they do not use the Mac OS networking stack.\r\n    if (strContains(userAgent, \"Macintosh; Intel Mac OS X 10_14\") && strEndsWith(userAgent, \"AppleWebKit/605.1.15 (KHTML, like Gecko)\")) {\r\n        return true;\r\n    }\r\n    // Cover Chrome 50-69, because some versions are broken by SameSite=None, and none in this range require it.\r\n    // Note: this covers some pre-Chromium Edge versions, but pre-Chromim Edge does not require SameSite=None, so this is fine.\r\n    // Note: this regex applies to Windows, Mac OS X, and Linux, deliberately.\r\n    if (strContains(userAgent, \"Chrome/5\") || strContains(userAgent, \"Chrome/6\")) {\r\n        return true;\r\n    }\r\n    // Unreal Engine runs Chromium 59, but does not advertise as Chrome until 4.23. Treat versions of Unreal\r\n    // that don't specify their Chrome version as lacking support for SameSite=None.\r\n    if (strContains(userAgent, \"UnrealEngine\") && !strContains(userAgent, \"Chrome\")) {\r\n        return true;\r\n    }\r\n    // UCBrowser < 12.13.2 ignores Set-Cookie headers with SameSite=None\r\n    // NB: this rule isn't complete - you need regex to make a complete rule.\r\n    // See: https://www.chromium.org/updates/same-site/incompatible-clients\r\n    if (strContains(userAgent, \"UCBrowser/12\") || strContains(userAgent, \"UCBrowser/11\")) {\r\n        return true;\r\n    }\r\n    return false;\r\n}\r\n//# sourceMappingURL=CookieMgr.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n/**\r\n * This is an internal property used to cause internal (reporting) requests to be ignored from reporting\r\n * additional telemetry, to handle polyfil implementations ALL urls used with a disabled request will\r\n * also be ignored for future requests even when this property is not provided.\r\n * Tagging as Ignore as this is an internal value and is not expected to be used outside of the SDK\r\n * @ignore\r\n */\r\nexport var DisabledPropertyName = \"Microsoft_ApplicationInsights_BypassAjaxInstrumentation\";\r\nexport var SampleRate = \"sampleRate\";\r\nexport var ProcessLegacy = \"ProcessLegacy\";\r\nexport var HttpMethod = \"http.method\";\r\nexport var DEFAULT_BREEZE_ENDPOINT = \"https://dc.services.visualstudio.com\";\r\nexport var strNotSpecified = \"not_specified\";\r\nexport var strIkey = \"iKey\";\r\n//# sourceMappingURL=Constants.js.map","'use strict';\n\nif (process.env.NODE_ENV === 'production') {\n  module.exports = require('./cjs/react-is.production.min.js');\n} else {\n  module.exports = require('./cjs/react-is.development.js');\n}\n","var root = require('./_root');\n\n/** Built-in value references. */\nvar Symbol = root.Symbol;\n\nmodule.exports = Symbol;\n","var getNative = require('./_getNative');\n\n/* Built-in method references that are verified to be native. */\nvar nativeCreate = getNative(Object, 'create');\n\nmodule.exports = nativeCreate;\n","var listCacheClear = require('./_listCacheClear'),\n    listCacheDelete = require('./_listCacheDelete'),\n    listCacheGet = require('./_listCacheGet'),\n    listCacheHas = require('./_listCacheHas'),\n    listCacheSet = require('./_listCacheSet');\n\n/**\n * Creates an list cache object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction ListCache(entries) {\n  var index = -1,\n      length = entries == null ? 0 : entries.length;\n\n  this.clear();\n  while (++index < length) {\n    var entry = entries[index];\n    this.set(entry[0], entry[1]);\n  }\n}\n\n// Add methods to `ListCache`.\nListCache.prototype.clear = listCacheClear;\nListCache.prototype['delete'] = listCacheDelete;\nListCache.prototype.get = listCacheGet;\nListCache.prototype.has = listCacheHas;\nListCache.prototype.set = listCacheSet;\n\nmodule.exports = ListCache;\n","var eq = require('./eq');\n\n/**\n * Gets the index at which the `key` is found in `array` of key-value pairs.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} key The key to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\nfunction assocIndexOf(array, key) {\n  var length = array.length;\n  while (length--) {\n    if (eq(array[length][0], key)) {\n      return length;\n    }\n  }\n  return -1;\n}\n\nmodule.exports = assocIndexOf;\n","var isKeyable = require('./_isKeyable');\n\n/**\n * Gets the data for `map`.\n *\n * @private\n * @param {Object} map The map to query.\n * @param {string} key The reference key.\n * @returns {*} Returns the map data.\n */\nfunction getMapData(map, key) {\n  var data = map.__data__;\n  return isKeyable(key)\n    ? data[typeof key == 'string' ? 'string' : 'hash']\n    : data.map;\n}\n\nmodule.exports = getMapData;\n","var isSymbol = require('./isSymbol');\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0;\n\n/**\n * Converts `value` to a string key if it's not a string or symbol.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {string|symbol} Returns the key.\n */\nfunction toKey(value) {\n  if (typeof value == 'string' || isSymbol(value)) {\n    return value;\n  }\n  var result = (value + '');\n  return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n}\n\nmodule.exports = toKey;\n","module.exports = function(originalModule) {\n\tif (!originalModule.webpackPolyfill) {\n\t\tvar module = Object.create(originalModule);\n\t\t// module.parent = undefined by default\n\t\tif (!module.children) module.children = [];\n\t\tObject.defineProperty(module, \"loaded\", {\n\t\t\tenumerable: true,\n\t\t\tget: function() {\n\t\t\t\treturn module.l;\n\t\t\t}\n\t\t});\n\t\tObject.defineProperty(module, \"id\", {\n\t\t\tenumerable: true,\n\t\t\tget: function() {\n\t\t\t\treturn module.i;\n\t\t\t}\n\t\t});\n\t\tObject.defineProperty(module, \"exports\", {\n\t\t\tenumerable: true\n\t\t});\n\t\tmodule.webpackPolyfill = 1;\n\t}\n\treturn module;\n};\n","'use strict'\n\nconst React = require('react')\nconst PropTypes = require('prop-types')\n\nconst CanvasSize = 16\nlet linkEl\n\nconst drawAlert = (context, { alertCount, fillColor, text, textColor }) => {\n  context.font = 'bold 10px arial'\n  const Padding = 3\n\n  const w = context.measureText(text).width + Padding\n  const x = CanvasSize - w\n  const y = CanvasSize / 2 - Padding\n  const h = Padding + CanvasSize / 2\n  const r = Math.min(w / 2, h / 2)\n\n  context.beginPath()\n  context.moveTo(x + r, y)\n  context.arcTo(x + w, y, x + w, y + h, r)\n  context.arcTo(x + w, y + h, x, y + h, r)\n  context.arcTo(x, y + h, x, y, r)\n  context.arcTo(x, y, x + w, y, r)\n  context.closePath()\n  context.fillStyle = fillColor\n  context.fill()\n  context.fillStyle = textColor\n  context.textBaseline = 'bottom'\n  context.textAlign = 'right'\n  context.fillText(text, CanvasSize - Padding / 2, CanvasSize)\n}\n\nfunction drawIcon({\n  alertCount,\n  alertFillColor,\n  alertTextColor,\n  callback,\n  renderOverlay,\n  url: src,\n}) {\n  const img = document.createElement('img')\n  img.crossOrigin = 'Anonymous'\n  img.onload = function () {\n    const canvas = document.createElement('canvas')\n    canvas.width = CanvasSize\n    canvas.height = CanvasSize\n\n    const context = canvas.getContext('2d')\n    context.clearRect(0, 0, img.width, img.height)\n    context.drawImage(img, 0, 0, canvas.width, canvas.height)\n\n    if (alertCount) {\n      drawAlert(context, {\n        fillColor: alertFillColor,\n        textColor: alertTextColor,\n        text: alertCount,\n      })\n    }\n\n    if (renderOverlay) {\n      renderOverlay(canvas, context)\n    }\n\n    callback(context.canvas.toDataURL())\n  }\n  img.src = src\n}\n\nclass Favicon extends React.Component {\n  static displayName = 'Favicon'\n\n  static mountedInstances = []\n\n  static getActiveInstance() {\n    return Favicon.mountedInstances[Favicon.mountedInstances.length - 1]\n  }\n\n  static draw() {\n    if (typeof document === 'undefined') return\n\n    var activeInstance = Favicon.getActiveInstance()\n    if (typeof linkEl === 'undefined') {\n      var head = document.getElementsByTagName('head')[0]\n      linkEl = document.createElement('link')\n      linkEl.type = 'image/x-icon'\n      linkEl.rel = 'icon'\n\n      // remove existing favicons\n      var links = head.getElementsByTagName('link')\n      for (var i = links.length; --i >= 0; ) {\n        if (\n          /\\bicon\\b/i.test(links[i].getAttribute('rel')) &&\n          !activeInstance.props.keepIconLink(links[i])\n        ) {\n          head.removeChild(links[i])\n        }\n      }\n\n      head.appendChild(linkEl)\n    }\n\n    var currentUrl\n\n    if (activeInstance.props.url instanceof Array) {\n      currentUrl = activeInstance.props.url[activeInstance.state.animationIndex]\n    } else {\n      currentUrl = activeInstance.props.url\n    }\n\n    if (activeInstance.props.alertCount || activeInstance.props.renderOverlay) {\n      drawIcon({\n        alertCount: activeInstance.props.alertCount,\n        alertFillColor: activeInstance.props.alertFillColor,\n        alertTextColor: activeInstance.props.alertTextColor,\n        callback: (url) => {\n          linkEl.href = url\n        },\n        renderOverlay: activeInstance.props.renderOverlay,\n        url: currentUrl,\n      })\n    } else {\n      linkEl.href = currentUrl\n    }\n  }\n\n  static update() {\n    if (typeof document === 'undefined') return\n\n    var activeInstance = Favicon.getActiveInstance()\n    var isAnimated =\n      activeInstance.props.url instanceof Array && activeInstance.props.animated\n\n    // clear any running animations\n    var intervalId = null\n    clearInterval(activeInstance.state.animationLoop)\n\n    if (isAnimated) {\n      var animateFavicon = function animateFavicon() {\n        var nextAnimationIndex =\n          (activeInstance.state.animationIndex + 1) %\n          activeInstance.props.url.length\n        Favicon.draw()\n        activeInstance.setState({ animationIndex: nextAnimationIndex })\n      }\n      intervalId = setInterval(\n        animateFavicon,\n        activeInstance.props.animationDelay\n      )\n      animateFavicon()\n    } else {\n      Favicon.draw()\n    }\n\n    activeInstance.setState({ animationLoop: intervalId })\n  }\n\n  state = {\n    animationIndex: 0,\n    animationLoop: null,\n    animationRunning: false,\n  }\n\n  componentDidMount() {\n    Favicon.mountedInstances.push(this)\n    Favicon.update()\n  }\n\n  componentWillUnmount() {\n    var activeInstance = Favicon.getActiveInstance()\n    clearInterval(activeInstance.state.animationLoop)\n  }\n\n  componentDidUpdate(prevProps) {\n    if (\n      prevProps.url === this.props.url &&\n      prevProps.animated === this.props.animated &&\n      prevProps.alertCount === this.props.alertCount &&\n      prevProps.alertFillColor === this.props.alertFillColor &&\n      prevProps.alertTextColor === this.props.alertTextColor &&\n      prevProps.renderOverlay === this.props.renderOverlay &&\n      prevProps.keepIconLink === this.props.keepIconLink\n    )\n      return\n\n    Favicon.update()\n  }\n\n  render() {\n    return null\n  }\n}\n\nFavicon.defaultProps = {\n  alertCount: null,\n  alertFillColor: 'red',\n  alertTextColor: 'white',\n  animated: true,\n  animationDelay: 500,\n  keepIconLink: () => false,\n  renderOverlay: null,\n  url: null,\n}\n\nFavicon.propTypes = {\n  alertCount: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n  alertFillColor: PropTypes.string,\n  alertTextColor: PropTypes.string,\n  animated: PropTypes.bool,\n  animationDelay: PropTypes.number,\n  keepIconLink: PropTypes.func,\n  renderOverlay: PropTypes.func,\n  url: PropTypes.oneOfType([\n    PropTypes.arrayOf(PropTypes.string),\n    PropTypes.string,\n  ]).isRequired,\n}\n\nmodule.exports = Favicon\n","export default function _arrayWithHoles(arr) {\n  if (Array.isArray(arr)) return arr;\n}","export default function _nonIterableRest() {\n  throw new TypeError(\"Invalid attempt to destructure non-iterable instance.\\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.\");\n}","export default function _iterableToArray(iter) {\n  if (typeof Symbol !== \"undefined\" && iter[Symbol.iterator] != null || iter[\"@@iterator\"] != null) return Array.from(iter);\n}","import _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\n// Follow https://material.google.com/motion/duration-easing.html#duration-easing-natural-easing-curves\n// to learn the context in which each easing should be used.\nexport var easing = {\n  // This is the most common easing curve.\n  easeInOut: 'cubic-bezier(0.4, 0, 0.2, 1)',\n  // Objects enter the screen at full velocity from off-screen and\n  // slowly decelerate to a resting point.\n  easeOut: 'cubic-bezier(0.0, 0, 0.2, 1)',\n  // Objects leave the screen at full velocity. They do not decelerate when off-screen.\n  easeIn: 'cubic-bezier(0.4, 0, 1, 1)',\n  // The sharp curve is used by objects that may return to the screen at any time.\n  sharp: 'cubic-bezier(0.4, 0, 0.6, 1)'\n}; // Follow https://material.io/guidelines/motion/duration-easing.html#duration-easing-common-durations\n// to learn when use what timing\n\nexport var duration = {\n  shortest: 150,\n  shorter: 200,\n  short: 250,\n  // most basic recommended timing\n  standard: 300,\n  // this is to be used in complex animations\n  complex: 375,\n  // recommended when something is entering screen\n  enteringScreen: 225,\n  // recommended when something is leaving screen\n  leavingScreen: 195\n};\n\nfunction formatMs(milliseconds) {\n  return \"\".concat(Math.round(milliseconds), \"ms\");\n}\n/**\n * @param {string|Array} props\n * @param {object} param\n * @param {string} param.prop\n * @param {number} param.duration\n * @param {string} param.easing\n * @param {number} param.delay\n */\n\n\nexport default {\n  easing: easing,\n  duration: duration,\n  create: function create() {\n    var props = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : ['all'];\n    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n    var _options$duration = options.duration,\n        durationOption = _options$duration === void 0 ? duration.standard : _options$duration,\n        _options$easing = options.easing,\n        easingOption = _options$easing === void 0 ? easing.easeInOut : _options$easing,\n        _options$delay = options.delay,\n        delay = _options$delay === void 0 ? 0 : _options$delay,\n        other = _objectWithoutProperties(options, [\"duration\", \"easing\", \"delay\"]);\n\n    if (process.env.NODE_ENV !== 'production') {\n      var isString = function isString(value) {\n        return typeof value === 'string';\n      };\n\n      var isNumber = function isNumber(value) {\n        return !isNaN(parseFloat(value));\n      };\n\n      if (!isString(props) && !Array.isArray(props)) {\n        console.error('Material-UI: Argument \"props\" must be a string or Array.');\n      }\n\n      if (!isNumber(durationOption) && !isString(durationOption)) {\n        console.error(\"Material-UI: Argument \\\"duration\\\" must be a number or a string but found \".concat(durationOption, \".\"));\n      }\n\n      if (!isString(easingOption)) {\n        console.error('Material-UI: Argument \"easing\" must be a string.');\n      }\n\n      if (!isNumber(delay) && !isString(delay)) {\n        console.error('Material-UI: Argument \"delay\" must be a number or a string.');\n      }\n\n      if (Object.keys(other).length !== 0) {\n        console.error(\"Material-UI: Unrecognized argument(s) [\".concat(Object.keys(other).join(','), \"].\"));\n      }\n    }\n\n    return (Array.isArray(props) ? props : [props]).map(function (animatedProp) {\n      return \"\".concat(animatedProp, \" \").concat(typeof durationOption === 'string' ? durationOption : formatMs(durationOption), \" \").concat(easingOption, \" \").concat(typeof delay === 'string' ? delay : formatMs(delay));\n    }).join(',');\n  },\n  getAutoHeightDuration: function getAutoHeightDuration(height) {\n    if (!height) {\n      return 0;\n    }\n\n    var constant = height / 36; // https://www.wolframalpha.com/input/?i=(4+%2B+15+*+(x+%2F+36+)+**+0.25+%2B+(x+%2F+36)+%2F+5)+*+10\n\n    return Math.round((4 + 15 * Math.pow(constant, 0.25) + constant / 5) * 10);\n  }\n};","// We need to centralize the zIndex definitions as they work\n// like global values in the browser.\nvar zIndex = {\n  mobileStepper: 1000,\n  speedDial: 1050,\n  appBar: 1100,\n  drawer: 1200,\n  modal: 1300,\n  snackbar: 1400,\n  tooltip: 1500\n};\nexport default zIndex;","import React from 'react';\nvar ThemeContext = React.createContext(null);\n\nif (process.env.NODE_ENV !== 'production') {\n  ThemeContext.displayName = 'ThemeContext';\n}\n\nexport default ThemeContext;","var hasSymbol = typeof Symbol === 'function' && Symbol.for;\nexport default hasSymbol ? Symbol.for('mui.nested') : '__THEME_NESTED__';","import * as React from 'react';\n/**\n * @ignore - internal component.\n * @type {React.Context<{} | {expanded: boolean, disabled: boolean, toggle: () => void}>}\n */\n\nvar AccordionContext = React.createContext({});\n\nif (process.env.NODE_ENV !== 'production') {\n  AccordionContext.displayName = 'AccordionContext';\n}\n\nexport default AccordionContext;","export default function _assertThisInitialized(self) {\n  if (self === void 0) {\n    throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n  }\n\n  return self;\n}","export default function _isNativeReflectConstruct() {\n  if (typeof Reflect === \"undefined\" || !Reflect.construct) return false;\n  if (Reflect.construct.sham) return false;\n  if (typeof Proxy === \"function\") return true;\n\n  try {\n    Date.prototype.toString.call(Reflect.construct(Date, [], function () {}));\n    return true;\n  } catch (e) {\n    return false;\n  }\n}","var baseAssignValue = require('./_baseAssignValue'),\n    baseForOwn = require('./_baseForOwn'),\n    baseIteratee = require('./_baseIteratee');\n\n/**\n * Creates an object with the same keys as `object` and values generated\n * by running each own enumerable string keyed property of `object` thru\n * `iteratee`. The iteratee is invoked with three arguments:\n * (value, key, object).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns the new mapped object.\n * @see _.mapKeys\n * @example\n *\n * var users = {\n *   'fred':    { 'user': 'fred',    'age': 40 },\n *   'pebbles': { 'user': 'pebbles', 'age': 1 }\n * };\n *\n * _.mapValues(users, function(o) { return o.age; });\n * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n *\n * // The `_.property` iteratee shorthand.\n * _.mapValues(users, 'age');\n * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n */\nfunction mapValues(object, iteratee) {\n  var result = {};\n  iteratee = baseIteratee(iteratee, 3);\n\n  baseForOwn(object, function(value, key, object) {\n    baseAssignValue(result, key, iteratee(value, key, object));\n  });\n  return result;\n}\n\nmodule.exports = mapValues;\n","/** Detect free variable `global` from Node.js. */\nvar freeGlobal = typeof global == 'object' && global && global.Object === Object && global;\n\nexport default freeGlobal;\n","import root from './_root.js';\nimport stubFalse from './stubFalse.js';\n\n/** Detect free variable `exports`. */\nvar freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;\n\n/** Detect free variable `module`. */\nvar freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;\n\n/** Detect the popular CommonJS extension `module.exports`. */\nvar moduleExports = freeModule && freeModule.exports === freeExports;\n\n/** Built-in value references. */\nvar Buffer = moduleExports ? root.Buffer : undefined;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined;\n\n/**\n * Checks if `value` is a buffer.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.\n * @example\n *\n * _.isBuffer(new Buffer(2));\n * // => true\n *\n * _.isBuffer(new Uint8Array(2));\n * // => false\n */\nvar isBuffer = nativeIsBuffer || stubFalse;\n\nexport default isBuffer;\n","// Corresponds to 10 frames at 60 Hz.\n// A few bytes payload overhead when lodash/debounce is ~3 kB and debounce ~300 B.\nexport default function debounce(func) {\n  var wait = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 166;\n  var timeout;\n\n  function debounced() {\n    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n      args[_key] = arguments[_key];\n    }\n\n    // eslint-disable-next-line consistent-this\n    var that = this;\n\n    var later = function later() {\n      func.apply(that, args);\n    };\n\n    clearTimeout(timeout);\n    timeout = setTimeout(later, wait);\n  }\n\n  debounced.clear = function () {\n    clearTimeout(timeout);\n  };\n\n  return debounced;\n}","var green = {\n  50: '#e8f5e9',\n  100: '#c8e6c9',\n  200: '#a5d6a7',\n  300: '#81c784',\n  400: '#66bb6a',\n  500: '#4caf50',\n  600: '#43a047',\n  700: '#388e3c',\n  800: '#2e7d32',\n  900: '#1b5e20',\n  A100: '#b9f6ca',\n  A200: '#69f0ae',\n  A400: '#00e676',\n  A700: '#00c853'\n};\nexport default green;","module.exports = function(module) {\n\tif (!module.webpackPolyfill) {\n\t\tmodule.deprecate = function() {};\n\t\tmodule.paths = [];\n\t\t// module.parent = undefined by default\n\t\tif (!module.children) module.children = [];\n\t\tObject.defineProperty(module, \"loaded\", {\n\t\t\tenumerable: true,\n\t\t\tget: function() {\n\t\t\t\treturn module.l;\n\t\t\t}\n\t\t});\n\t\tObject.defineProperty(module, \"id\", {\n\t\t\tenumerable: true,\n\t\t\tget: function() {\n\t\t\t\treturn module.i;\n\t\t\t}\n\t\t});\n\t\tmodule.webpackPolyfill = 1;\n\t}\n\treturn module;\n};\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\nif (process.env.NODE_ENV !== 'production') {\n  var ReactIs = require('react-is');\n\n  // By explicitly using `prop-types` you are opting into new development behavior.\n  // http://fb.me/prop-types-in-prod\n  var throwOnDirectAccess = true;\n  module.exports = require('./factoryWithTypeCheckers')(ReactIs.isElement, throwOnDirectAccess);\n} else {\n  // By explicitly using `prop-types` you are opting into new production behavior.\n  // http://fb.me/prop-types-in-prod\n  module.exports = require('./factoryWithThrowingShims')();\n}\n","var isArray = require('./isArray'),\n    isSymbol = require('./isSymbol');\n\n/** Used to match property names within property paths. */\nvar reIsDeepProp = /\\.|\\[(?:[^[\\]]*|([\"'])(?:(?!\\1)[^\\\\]|\\\\.)*?\\1)\\]/,\n    reIsPlainProp = /^\\w*$/;\n\n/**\n * Checks if `value` is a property name and not a property path.\n *\n * @private\n * @param {*} value The value to check.\n * @param {Object} [object] The object to query keys on.\n * @returns {boolean} Returns `true` if `value` is a property name, else `false`.\n */\nfunction isKey(value, object) {\n  if (isArray(value)) {\n    return false;\n  }\n  var type = typeof value;\n  if (type == 'number' || type == 'symbol' || type == 'boolean' ||\n      value == null || isSymbol(value)) {\n    return true;\n  }\n  return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||\n    (object != null && value in Object(object));\n}\n\nmodule.exports = isKey;\n","var baseGetTag = require('./_baseGetTag'),\n    isObjectLike = require('./isObjectLike');\n\n/** `Object#toString` result references. */\nvar symbolTag = '[object Symbol]';\n\n/**\n * Checks if `value` is classified as a `Symbol` primitive or object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n * @example\n *\n * _.isSymbol(Symbol.iterator);\n * // => true\n *\n * _.isSymbol('abc');\n * // => false\n */\nfunction isSymbol(value) {\n  return typeof value == 'symbol' ||\n    (isObjectLike(value) && baseGetTag(value) == symbolTag);\n}\n\nmodule.exports = isSymbol;\n","var mapCacheClear = require('./_mapCacheClear'),\n    mapCacheDelete = require('./_mapCacheDelete'),\n    mapCacheGet = require('./_mapCacheGet'),\n    mapCacheHas = require('./_mapCacheHas'),\n    mapCacheSet = require('./_mapCacheSet');\n\n/**\n * Creates a map cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction MapCache(entries) {\n  var index = -1,\n      length = entries == null ? 0 : entries.length;\n\n  this.clear();\n  while (++index < length) {\n    var entry = entries[index];\n    this.set(entry[0], entry[1]);\n  }\n}\n\n// Add methods to `MapCache`.\nMapCache.prototype.clear = mapCacheClear;\nMapCache.prototype['delete'] = mapCacheDelete;\nMapCache.prototype.get = mapCacheGet;\nMapCache.prototype.has = mapCacheHas;\nMapCache.prototype.set = mapCacheSet;\n\nmodule.exports = MapCache;\n","/**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\nfunction isObject(value) {\n  var type = typeof value;\n  return value != null && (type == 'object' || type == 'function');\n}\n\nmodule.exports = isObject;\n","var getNative = require('./_getNative'),\n    root = require('./_root');\n\n/* Built-in method references that are verified to be native. */\nvar Map = getNative(root, 'Map');\n\nmodule.exports = Map;\n","/** Used as references for various `Number` constants. */\nvar MAX_SAFE_INTEGER = 9007199254740991;\n\n/**\n * Checks if `value` is a valid array-like length.\n *\n * **Note:** This method is loosely based on\n * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.\n * @example\n *\n * _.isLength(3);\n * // => true\n *\n * _.isLength(Number.MIN_VALUE);\n * // => false\n *\n * _.isLength(Infinity);\n * // => false\n *\n * _.isLength('3');\n * // => false\n */\nfunction isLength(value) {\n  return typeof value == 'number' &&\n    value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\n}\n\nmodule.exports = isLength;\n","var arrayLikeKeys = require('./_arrayLikeKeys'),\n    baseKeys = require('./_baseKeys'),\n    isArrayLike = require('./isArrayLike');\n\n/**\n * Creates an array of the own enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects. See the\n * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n * for more details.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n *   this.a = 1;\n *   this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keys(new Foo);\n * // => ['a', 'b'] (iteration order is not guaranteed)\n *\n * _.keys('hi');\n * // => ['0', '1']\n */\nfunction keys(object) {\n  return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);\n}\n\nmodule.exports = keys;\n","/**\n * @license\n * Lodash <https://lodash.com/>\n * Copyright OpenJS Foundation and other contributors <https://openjsf.org/>\n * Released under MIT license <https://lodash.com/license>\n * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>\n * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors\n */\n;(function() {\n\n  /** Used as a safe reference for `undefined` in pre-ES5 environments. */\n  var undefined;\n\n  /** Used as the semantic version number. */\n  var VERSION = '4.17.15';\n\n  /** Used as the size to enable large array optimizations. */\n  var LARGE_ARRAY_SIZE = 200;\n\n  /** Error message constants. */\n  var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',\n      FUNC_ERROR_TEXT = 'Expected a function';\n\n  /** Used to stand-in for `undefined` hash values. */\n  var HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n  /** Used as the maximum memoize cache size. */\n  var MAX_MEMOIZE_SIZE = 500;\n\n  /** Used as the internal argument placeholder. */\n  var PLACEHOLDER = '__lodash_placeholder__';\n\n  /** Used to compose bitmasks for cloning. */\n  var CLONE_DEEP_FLAG = 1,\n      CLONE_FLAT_FLAG = 2,\n      CLONE_SYMBOLS_FLAG = 4;\n\n  /** Used to compose bitmasks for value comparisons. */\n  var COMPARE_PARTIAL_FLAG = 1,\n      COMPARE_UNORDERED_FLAG = 2;\n\n  /** Used to compose bitmasks for function metadata. */\n  var WRAP_BIND_FLAG = 1,\n      WRAP_BIND_KEY_FLAG = 2,\n      WRAP_CURRY_BOUND_FLAG = 4,\n      WRAP_CURRY_FLAG = 8,\n      WRAP_CURRY_RIGHT_FLAG = 16,\n      WRAP_PARTIAL_FLAG = 32,\n      WRAP_PARTIAL_RIGHT_FLAG = 64,\n      WRAP_ARY_FLAG = 128,\n      WRAP_REARG_FLAG = 256,\n      WRAP_FLIP_FLAG = 512;\n\n  /** Used as default options for `_.truncate`. */\n  var DEFAULT_TRUNC_LENGTH = 30,\n      DEFAULT_TRUNC_OMISSION = '...';\n\n  /** Used to detect hot functions by number of calls within a span of milliseconds. */\n  var HOT_COUNT = 800,\n      HOT_SPAN = 16;\n\n  /** Used to indicate the type of lazy iteratees. */\n  var LAZY_FILTER_FLAG = 1,\n      LAZY_MAP_FLAG = 2,\n      LAZY_WHILE_FLAG = 3;\n\n  /** Used as references for various `Number` constants. */\n  var INFINITY = 1 / 0,\n      MAX_SAFE_INTEGER = 9007199254740991,\n      MAX_INTEGER = 1.7976931348623157e+308,\n      NAN = 0 / 0;\n\n  /** Used as references for the maximum length and index of an array. */\n  var MAX_ARRAY_LENGTH = 4294967295,\n      MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,\n      HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;\n\n  /** Used to associate wrap methods with their bit flags. */\n  var wrapFlags = [\n    ['ary', WRAP_ARY_FLAG],\n    ['bind', WRAP_BIND_FLAG],\n    ['bindKey', WRAP_BIND_KEY_FLAG],\n    ['curry', WRAP_CURRY_FLAG],\n    ['curryRight', WRAP_CURRY_RIGHT_FLAG],\n    ['flip', WRAP_FLIP_FLAG],\n    ['partial', WRAP_PARTIAL_FLAG],\n    ['partialRight', WRAP_PARTIAL_RIGHT_FLAG],\n    ['rearg', WRAP_REARG_FLAG]\n  ];\n\n  /** `Object#toString` result references. */\n  var argsTag = '[object Arguments]',\n      arrayTag = '[object Array]',\n      asyncTag = '[object AsyncFunction]',\n      boolTag = '[object Boolean]',\n      dateTag = '[object Date]',\n      domExcTag = '[object DOMException]',\n      errorTag = '[object Error]',\n      funcTag = '[object Function]',\n      genTag = '[object GeneratorFunction]',\n      mapTag = '[object Map]',\n      numberTag = '[object Number]',\n      nullTag = '[object Null]',\n      objectTag = '[object Object]',\n      promiseTag = '[object Promise]',\n      proxyTag = '[object Proxy]',\n      regexpTag = '[object RegExp]',\n      setTag = '[object Set]',\n      stringTag = '[object String]',\n      symbolTag = '[object Symbol]',\n      undefinedTag = '[object Undefined]',\n      weakMapTag = '[object WeakMap]',\n      weakSetTag = '[object WeakSet]';\n\n  var arrayBufferTag = '[object ArrayBuffer]',\n      dataViewTag = '[object DataView]',\n      float32Tag = '[object Float32Array]',\n      float64Tag = '[object Float64Array]',\n      int8Tag = '[object Int8Array]',\n      int16Tag = '[object Int16Array]',\n      int32Tag = '[object Int32Array]',\n      uint8Tag = '[object Uint8Array]',\n      uint8ClampedTag = '[object Uint8ClampedArray]',\n      uint16Tag = '[object Uint16Array]',\n      uint32Tag = '[object Uint32Array]';\n\n  /** Used to match empty string literals in compiled template source. */\n  var reEmptyStringLeading = /\\b__p \\+= '';/g,\n      reEmptyStringMiddle = /\\b(__p \\+=) '' \\+/g,\n      reEmptyStringTrailing = /(__e\\(.*?\\)|\\b__t\\)) \\+\\n'';/g;\n\n  /** Used to match HTML entities and HTML characters. */\n  var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,\n      reUnescapedHtml = /[&<>\"']/g,\n      reHasEscapedHtml = RegExp(reEscapedHtml.source),\n      reHasUnescapedHtml = RegExp(reUnescapedHtml.source);\n\n  /** Used to match template delimiters. */\n  var reEscape = /<%-([\\s\\S]+?)%>/g,\n      reEvaluate = /<%([\\s\\S]+?)%>/g,\n      reInterpolate = /<%=([\\s\\S]+?)%>/g;\n\n  /** Used to match property names within property paths. */\n  var reIsDeepProp = /\\.|\\[(?:[^[\\]]*|([\"'])(?:(?!\\1)[^\\\\]|\\\\.)*?\\1)\\]/,\n      reIsPlainProp = /^\\w*$/,\n      rePropName = /[^.[\\]]+|\\[(?:(-?\\d+(?:\\.\\d+)?)|([\"'])((?:(?!\\2)[^\\\\]|\\\\.)*?)\\2)\\]|(?=(?:\\.|\\[\\])(?:\\.|\\[\\]|$))/g;\n\n  /**\n   * Used to match `RegExp`\n   * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).\n   */\n  var reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g,\n      reHasRegExpChar = RegExp(reRegExpChar.source);\n\n  /** Used to match leading and trailing whitespace. */\n  var reTrim = /^\\s+|\\s+$/g,\n      reTrimStart = /^\\s+/,\n      reTrimEnd = /\\s+$/;\n\n  /** Used to match wrap detail comments. */\n  var reWrapComment = /\\{(?:\\n\\/\\* \\[wrapped with .+\\] \\*\\/)?\\n?/,\n      reWrapDetails = /\\{\\n\\/\\* \\[wrapped with (.+)\\] \\*/,\n      reSplitDetails = /,? & /;\n\n  /** Used to match words composed of alphanumeric characters. */\n  var reAsciiWord = /[^\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\x7f]+/g;\n\n  /** Used to match backslashes in property paths. */\n  var reEscapeChar = /\\\\(\\\\)?/g;\n\n  /**\n   * Used to match\n   * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).\n   */\n  var reEsTemplate = /\\$\\{([^\\\\}]*(?:\\\\.[^\\\\}]*)*)\\}/g;\n\n  /** Used to match `RegExp` flags from their coerced string values. */\n  var reFlags = /\\w*$/;\n\n  /** Used to detect bad signed hexadecimal string values. */\n  var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;\n\n  /** Used to detect binary string values. */\n  var reIsBinary = /^0b[01]+$/i;\n\n  /** Used to detect host constructors (Safari). */\n  var reIsHostCtor = /^\\[object .+?Constructor\\]$/;\n\n  /** Used to detect octal string values. */\n  var reIsOctal = /^0o[0-7]+$/i;\n\n  /** Used to detect unsigned integer values. */\n  var reIsUint = /^(?:0|[1-9]\\d*)$/;\n\n  /** Used to match Latin Unicode letters (excluding mathematical operators). */\n  var reLatin = /[\\xc0-\\xd6\\xd8-\\xf6\\xf8-\\xff\\u0100-\\u017f]/g;\n\n  /** Used to ensure capturing order of template delimiters. */\n  var reNoMatch = /($^)/;\n\n  /** Used to match unescaped characters in compiled string literals. */\n  var reUnescapedString = /['\\n\\r\\u2028\\u2029\\\\]/g;\n\n  /** Used to compose unicode character classes. */\n  var rsAstralRange = '\\\\ud800-\\\\udfff',\n      rsComboMarksRange = '\\\\u0300-\\\\u036f',\n      reComboHalfMarksRange = '\\\\ufe20-\\\\ufe2f',\n      rsComboSymbolsRange = '\\\\u20d0-\\\\u20ff',\n      rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,\n      rsDingbatRange = '\\\\u2700-\\\\u27bf',\n      rsLowerRange = 'a-z\\\\xdf-\\\\xf6\\\\xf8-\\\\xff',\n      rsMathOpRange = '\\\\xac\\\\xb1\\\\xd7\\\\xf7',\n      rsNonCharRange = '\\\\x00-\\\\x2f\\\\x3a-\\\\x40\\\\x5b-\\\\x60\\\\x7b-\\\\xbf',\n      rsPunctuationRange = '\\\\u2000-\\\\u206f',\n      rsSpaceRange = ' \\\\t\\\\x0b\\\\f\\\\xa0\\\\ufeff\\\\n\\\\r\\\\u2028\\\\u2029\\\\u1680\\\\u180e\\\\u2000\\\\u2001\\\\u2002\\\\u2003\\\\u2004\\\\u2005\\\\u2006\\\\u2007\\\\u2008\\\\u2009\\\\u200a\\\\u202f\\\\u205f\\\\u3000',\n      rsUpperRange = 'A-Z\\\\xc0-\\\\xd6\\\\xd8-\\\\xde',\n      rsVarRange = '\\\\ufe0e\\\\ufe0f',\n      rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;\n\n  /** Used to compose unicode capture groups. */\n  var rsApos = \"['\\u2019]\",\n      rsAstral = '[' + rsAstralRange + ']',\n      rsBreak = '[' + rsBreakRange + ']',\n      rsCombo = '[' + rsComboRange + ']',\n      rsDigits = '\\\\d+',\n      rsDingbat = '[' + rsDingbatRange + ']',\n      rsLower = '[' + rsLowerRange + ']',\n      rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',\n      rsFitz = '\\\\ud83c[\\\\udffb-\\\\udfff]',\n      rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',\n      rsNonAstral = '[^' + rsAstralRange + ']',\n      rsRegional = '(?:\\\\ud83c[\\\\udde6-\\\\uddff]){2}',\n      rsSurrPair = '[\\\\ud800-\\\\udbff][\\\\udc00-\\\\udfff]',\n      rsUpper = '[' + rsUpperRange + ']',\n      rsZWJ = '\\\\u200d';\n\n  /** Used to compose unicode regexes. */\n  var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',\n      rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',\n      rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',\n      rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',\n      reOptMod = rsModifier + '?',\n      rsOptVar = '[' + rsVarRange + ']?',\n      rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',\n      rsOrdLower = '\\\\d*(?:1st|2nd|3rd|(?![123])\\\\dth)(?=\\\\b|[A-Z_])',\n      rsOrdUpper = '\\\\d*(?:1ST|2ND|3RD|(?![123])\\\\dTH)(?=\\\\b|[a-z_])',\n      rsSeq = rsOptVar + reOptMod + rsOptJoin,\n      rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,\n      rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';\n\n  /** Used to match apostrophes. */\n  var reApos = RegExp(rsApos, 'g');\n\n  /**\n   * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and\n   * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).\n   */\n  var reComboMark = RegExp(rsCombo, 'g');\n\n  /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */\n  var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');\n\n  /** Used to match complex or compound words. */\n  var reUnicodeWord = RegExp([\n    rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',\n    rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',\n    rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,\n    rsUpper + '+' + rsOptContrUpper,\n    rsOrdUpper,\n    rsOrdLower,\n    rsDigits,\n    rsEmoji\n  ].join('|'), 'g');\n\n  /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */\n  var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboRange + rsVarRange + ']');\n\n  /** Used to detect strings that need a more robust regexp to match words. */\n  var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;\n\n  /** Used to assign default `context` object properties. */\n  var contextProps = [\n    'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array',\n    'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object',\n    'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array',\n    'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',\n    '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'\n  ];\n\n  /** Used to make template sourceURLs easier to identify. */\n  var templateCounter = -1;\n\n  /** Used to identify `toStringTag` values of typed arrays. */\n  var typedArrayTags = {};\n  typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =\n  typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =\n  typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =\n  typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =\n  typedArrayTags[uint32Tag] = true;\n  typedArrayTags[argsTag] = typedArrayTags[arrayTag] =\n  typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =\n  typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =\n  typedArrayTags[errorTag] = typedArrayTags[funcTag] =\n  typedArrayTags[mapTag] = typedArrayTags[numberTag] =\n  typedArrayTags[objectTag] = typedArrayTags[regexpTag] =\n  typedArrayTags[setTag] = typedArrayTags[stringTag] =\n  typedArrayTags[weakMapTag] = false;\n\n  /** Used to identify `toStringTag` values supported by `_.clone`. */\n  var cloneableTags = {};\n  cloneableTags[argsTag] = cloneableTags[arrayTag] =\n  cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =\n  cloneableTags[boolTag] = cloneableTags[dateTag] =\n  cloneableTags[float32Tag] = cloneableTags[float64Tag] =\n  cloneableTags[int8Tag] = cloneableTags[int16Tag] =\n  cloneableTags[int32Tag] = cloneableTags[mapTag] =\n  cloneableTags[numberTag] = cloneableTags[objectTag] =\n  cloneableTags[regexpTag] = cloneableTags[setTag] =\n  cloneableTags[stringTag] = cloneableTags[symbolTag] =\n  cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =\n  cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;\n  cloneableTags[errorTag] = cloneableTags[funcTag] =\n  cloneableTags[weakMapTag] = false;\n\n  /** Used to map Latin Unicode letters to basic Latin letters. */\n  var deburredLetters = {\n    // Latin-1 Supplement block.\n    '\\xc0': 'A',  '\\xc1': 'A', '\\xc2': 'A', '\\xc3': 'A', '\\xc4': 'A', '\\xc5': 'A',\n    '\\xe0': 'a',  '\\xe1': 'a', '\\xe2': 'a', '\\xe3': 'a', '\\xe4': 'a', '\\xe5': 'a',\n    '\\xc7': 'C',  '\\xe7': 'c',\n    '\\xd0': 'D',  '\\xf0': 'd',\n    '\\xc8': 'E',  '\\xc9': 'E', '\\xca': 'E', '\\xcb': 'E',\n    '\\xe8': 'e',  '\\xe9': 'e', '\\xea': 'e', '\\xeb': 'e',\n    '\\xcc': 'I',  '\\xcd': 'I', '\\xce': 'I', '\\xcf': 'I',\n    '\\xec': 'i',  '\\xed': 'i', '\\xee': 'i', '\\xef': 'i',\n    '\\xd1': 'N',  '\\xf1': 'n',\n    '\\xd2': 'O',  '\\xd3': 'O', '\\xd4': 'O', '\\xd5': 'O', '\\xd6': 'O', '\\xd8': 'O',\n    '\\xf2': 'o',  '\\xf3': 'o', '\\xf4': 'o', '\\xf5': 'o', '\\xf6': 'o', '\\xf8': 'o',\n    '\\xd9': 'U',  '\\xda': 'U', '\\xdb': 'U', '\\xdc': 'U',\n    '\\xf9': 'u',  '\\xfa': 'u', '\\xfb': 'u', '\\xfc': 'u',\n    '\\xdd': 'Y',  '\\xfd': 'y', '\\xff': 'y',\n    '\\xc6': 'Ae', '\\xe6': 'ae',\n    '\\xde': 'Th', '\\xfe': 'th',\n    '\\xdf': 'ss',\n    // Latin Extended-A block.\n    '\\u0100': 'A',  '\\u0102': 'A', '\\u0104': 'A',\n    '\\u0101': 'a',  '\\u0103': 'a', '\\u0105': 'a',\n    '\\u0106': 'C',  '\\u0108': 'C', '\\u010a': 'C', '\\u010c': 'C',\n    '\\u0107': 'c',  '\\u0109': 'c', '\\u010b': 'c', '\\u010d': 'c',\n    '\\u010e': 'D',  '\\u0110': 'D', '\\u010f': 'd', '\\u0111': 'd',\n    '\\u0112': 'E',  '\\u0114': 'E', '\\u0116': 'E', '\\u0118': 'E', '\\u011a': 'E',\n    '\\u0113': 'e',  '\\u0115': 'e', '\\u0117': 'e', '\\u0119': 'e', '\\u011b': 'e',\n    '\\u011c': 'G',  '\\u011e': 'G', '\\u0120': 'G', '\\u0122': 'G',\n    '\\u011d': 'g',  '\\u011f': 'g', '\\u0121': 'g', '\\u0123': 'g',\n    '\\u0124': 'H',  '\\u0126': 'H', '\\u0125': 'h', '\\u0127': 'h',\n    '\\u0128': 'I',  '\\u012a': 'I', '\\u012c': 'I', '\\u012e': 'I', '\\u0130': 'I',\n    '\\u0129': 'i',  '\\u012b': 'i', '\\u012d': 'i', '\\u012f': 'i', '\\u0131': 'i',\n    '\\u0134': 'J',  '\\u0135': 'j',\n    '\\u0136': 'K',  '\\u0137': 'k', '\\u0138': 'k',\n    '\\u0139': 'L',  '\\u013b': 'L', '\\u013d': 'L', '\\u013f': 'L', '\\u0141': 'L',\n    '\\u013a': 'l',  '\\u013c': 'l', '\\u013e': 'l', '\\u0140': 'l', '\\u0142': 'l',\n    '\\u0143': 'N',  '\\u0145': 'N', '\\u0147': 'N', '\\u014a': 'N',\n    '\\u0144': 'n',  '\\u0146': 'n', '\\u0148': 'n', '\\u014b': 'n',\n    '\\u014c': 'O',  '\\u014e': 'O', '\\u0150': 'O',\n    '\\u014d': 'o',  '\\u014f': 'o', '\\u0151': 'o',\n    '\\u0154': 'R',  '\\u0156': 'R', '\\u0158': 'R',\n    '\\u0155': 'r',  '\\u0157': 'r', '\\u0159': 'r',\n    '\\u015a': 'S',  '\\u015c': 'S', '\\u015e': 'S', '\\u0160': 'S',\n    '\\u015b': 's',  '\\u015d': 's', '\\u015f': 's', '\\u0161': 's',\n    '\\u0162': 'T',  '\\u0164': 'T', '\\u0166': 'T',\n    '\\u0163': 't',  '\\u0165': 't', '\\u0167': 't',\n    '\\u0168': 'U',  '\\u016a': 'U', '\\u016c': 'U', '\\u016e': 'U', '\\u0170': 'U', '\\u0172': 'U',\n    '\\u0169': 'u',  '\\u016b': 'u', '\\u016d': 'u', '\\u016f': 'u', '\\u0171': 'u', '\\u0173': 'u',\n    '\\u0174': 'W',  '\\u0175': 'w',\n    '\\u0176': 'Y',  '\\u0177': 'y', '\\u0178': 'Y',\n    '\\u0179': 'Z',  '\\u017b': 'Z', '\\u017d': 'Z',\n    '\\u017a': 'z',  '\\u017c': 'z', '\\u017e': 'z',\n    '\\u0132': 'IJ', '\\u0133': 'ij',\n    '\\u0152': 'Oe', '\\u0153': 'oe',\n    '\\u0149': \"'n\", '\\u017f': 's'\n  };\n\n  /** Used to map characters to HTML entities. */\n  var htmlEscapes = {\n    '&': '&amp;',\n    '<': '&lt;',\n    '>': '&gt;',\n    '\"': '&quot;',\n    \"'\": '&#39;'\n  };\n\n  /** Used to map HTML entities to characters. */\n  var htmlUnescapes = {\n    '&amp;': '&',\n    '&lt;': '<',\n    '&gt;': '>',\n    '&quot;': '\"',\n    '&#39;': \"'\"\n  };\n\n  /** Used to escape characters for inclusion in compiled string literals. */\n  var stringEscapes = {\n    '\\\\': '\\\\',\n    \"'\": \"'\",\n    '\\n': 'n',\n    '\\r': 'r',\n    '\\u2028': 'u2028',\n    '\\u2029': 'u2029'\n  };\n\n  /** Built-in method references without a dependency on `root`. */\n  var freeParseFloat = parseFloat,\n      freeParseInt = parseInt;\n\n  /** Detect free variable `global` from Node.js. */\n  var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;\n\n  /** Detect free variable `self`. */\n  var freeSelf = typeof self == 'object' && self && self.Object === Object && self;\n\n  /** Used as a reference to the global object. */\n  var root = freeGlobal || freeSelf || Function('return this')();\n\n  /** Detect free variable `exports`. */\n  var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;\n\n  /** Detect free variable `module`. */\n  var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;\n\n  /** Detect the popular CommonJS extension `module.exports`. */\n  var moduleExports = freeModule && freeModule.exports === freeExports;\n\n  /** Detect free variable `process` from Node.js. */\n  var freeProcess = moduleExports && freeGlobal.process;\n\n  /** Used to access faster Node.js helpers. */\n  var nodeUtil = (function() {\n    try {\n      // Use `util.types` for Node.js 10+.\n      var types = freeModule && freeModule.require && freeModule.require('util').types;\n\n      if (types) {\n        return types;\n      }\n\n      // Legacy `process.binding('util')` for Node.js < 10.\n      return freeProcess && freeProcess.binding && freeProcess.binding('util');\n    } catch (e) {}\n  }());\n\n  /* Node.js helper references. */\n  var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,\n      nodeIsDate = nodeUtil && nodeUtil.isDate,\n      nodeIsMap = nodeUtil && nodeUtil.isMap,\n      nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,\n      nodeIsSet = nodeUtil && nodeUtil.isSet,\n      nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;\n\n  /*--------------------------------------------------------------------------*/\n\n  /**\n   * A faster alternative to `Function#apply`, this function invokes `func`\n   * with the `this` binding of `thisArg` and the arguments of `args`.\n   *\n   * @private\n   * @param {Function} func The function to invoke.\n   * @param {*} thisArg The `this` binding of `func`.\n   * @param {Array} args The arguments to invoke `func` with.\n   * @returns {*} Returns the result of `func`.\n   */\n  function apply(func, thisArg, args) {\n    switch (args.length) {\n      case 0: return func.call(thisArg);\n      case 1: return func.call(thisArg, args[0]);\n      case 2: return func.call(thisArg, args[0], args[1]);\n      case 3: return func.call(thisArg, args[0], args[1], args[2]);\n    }\n    return func.apply(thisArg, args);\n  }\n\n  /**\n   * A specialized version of `baseAggregator` for arrays.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} setter The function to set `accumulator` values.\n   * @param {Function} iteratee The iteratee to transform keys.\n   * @param {Object} accumulator The initial aggregated object.\n   * @returns {Function} Returns `accumulator`.\n   */\n  function arrayAggregator(array, setter, iteratee, accumulator) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      var value = array[index];\n      setter(accumulator, value, iteratee(value), array);\n    }\n    return accumulator;\n  }\n\n  /**\n   * A specialized version of `_.forEach` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {Array} Returns `array`.\n   */\n  function arrayEach(array, iteratee) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      if (iteratee(array[index], index, array) === false) {\n        break;\n      }\n    }\n    return array;\n  }\n\n  /**\n   * A specialized version of `_.forEachRight` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {Array} Returns `array`.\n   */\n  function arrayEachRight(array, iteratee) {\n    var length = array == null ? 0 : array.length;\n\n    while (length--) {\n      if (iteratee(array[length], length, array) === false) {\n        break;\n      }\n    }\n    return array;\n  }\n\n  /**\n   * A specialized version of `_.every` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} predicate The function invoked per iteration.\n   * @returns {boolean} Returns `true` if all elements pass the predicate check,\n   *  else `false`.\n   */\n  function arrayEvery(array, predicate) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      if (!predicate(array[index], index, array)) {\n        return false;\n      }\n    }\n    return true;\n  }\n\n  /**\n   * A specialized version of `_.filter` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} predicate The function invoked per iteration.\n   * @returns {Array} Returns the new filtered array.\n   */\n  function arrayFilter(array, predicate) {\n    var index = -1,\n        length = array == null ? 0 : array.length,\n        resIndex = 0,\n        result = [];\n\n    while (++index < length) {\n      var value = array[index];\n      if (predicate(value, index, array)) {\n        result[resIndex++] = value;\n      }\n    }\n    return result;\n  }\n\n  /**\n   * A specialized version of `_.includes` for arrays without support for\n   * specifying an index to search from.\n   *\n   * @private\n   * @param {Array} [array] The array to inspect.\n   * @param {*} target The value to search for.\n   * @returns {boolean} Returns `true` if `target` is found, else `false`.\n   */\n  function arrayIncludes(array, value) {\n    var length = array == null ? 0 : array.length;\n    return !!length && baseIndexOf(array, value, 0) > -1;\n  }\n\n  /**\n   * This function is like `arrayIncludes` except that it accepts a comparator.\n   *\n   * @private\n   * @param {Array} [array] The array to inspect.\n   * @param {*} target The value to search for.\n   * @param {Function} comparator The comparator invoked per element.\n   * @returns {boolean} Returns `true` if `target` is found, else `false`.\n   */\n  function arrayIncludesWith(array, value, comparator) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      if (comparator(value, array[index])) {\n        return true;\n      }\n    }\n    return false;\n  }\n\n  /**\n   * A specialized version of `_.map` for arrays without support for iteratee\n   * shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {Array} Returns the new mapped array.\n   */\n  function arrayMap(array, iteratee) {\n    var index = -1,\n        length = array == null ? 0 : array.length,\n        result = Array(length);\n\n    while (++index < length) {\n      result[index] = iteratee(array[index], index, array);\n    }\n    return result;\n  }\n\n  /**\n   * Appends the elements of `values` to `array`.\n   *\n   * @private\n   * @param {Array} array The array to modify.\n   * @param {Array} values The values to append.\n   * @returns {Array} Returns `array`.\n   */\n  function arrayPush(array, values) {\n    var index = -1,\n        length = values.length,\n        offset = array.length;\n\n    while (++index < length) {\n      array[offset + index] = values[index];\n    }\n    return array;\n  }\n\n  /**\n   * A specialized version of `_.reduce` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @param {*} [accumulator] The initial value.\n   * @param {boolean} [initAccum] Specify using the first element of `array` as\n   *  the initial value.\n   * @returns {*} Returns the accumulated value.\n   */\n  function arrayReduce(array, iteratee, accumulator, initAccum) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    if (initAccum && length) {\n      accumulator = array[++index];\n    }\n    while (++index < length) {\n      accumulator = iteratee(accumulator, array[index], index, array);\n    }\n    return accumulator;\n  }\n\n  /**\n   * A specialized version of `_.reduceRight` for arrays without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @param {*} [accumulator] The initial value.\n   * @param {boolean} [initAccum] Specify using the last element of `array` as\n   *  the initial value.\n   * @returns {*} Returns the accumulated value.\n   */\n  function arrayReduceRight(array, iteratee, accumulator, initAccum) {\n    var length = array == null ? 0 : array.length;\n    if (initAccum && length) {\n      accumulator = array[--length];\n    }\n    while (length--) {\n      accumulator = iteratee(accumulator, array[length], length, array);\n    }\n    return accumulator;\n  }\n\n  /**\n   * A specialized version of `_.some` for arrays without support for iteratee\n   * shorthands.\n   *\n   * @private\n   * @param {Array} [array] The array to iterate over.\n   * @param {Function} predicate The function invoked per iteration.\n   * @returns {boolean} Returns `true` if any element passes the predicate check,\n   *  else `false`.\n   */\n  function arraySome(array, predicate) {\n    var index = -1,\n        length = array == null ? 0 : array.length;\n\n    while (++index < length) {\n      if (predicate(array[index], index, array)) {\n        return true;\n      }\n    }\n    return false;\n  }\n\n  /**\n   * Gets the size of an ASCII `string`.\n   *\n   * @private\n   * @param {string} string The string inspect.\n   * @returns {number} Returns the string size.\n   */\n  var asciiSize = baseProperty('length');\n\n  /**\n   * Converts an ASCII `string` to an array.\n   *\n   * @private\n   * @param {string} string The string to convert.\n   * @returns {Array} Returns the converted array.\n   */\n  function asciiToArray(string) {\n    return string.split('');\n  }\n\n  /**\n   * Splits an ASCII `string` into an array of its words.\n   *\n   * @private\n   * @param {string} The string to inspect.\n   * @returns {Array} Returns the words of `string`.\n   */\n  function asciiWords(string) {\n    return string.match(reAsciiWord) || [];\n  }\n\n  /**\n   * The base implementation of methods like `_.findKey` and `_.findLastKey`,\n   * without support for iteratee shorthands, which iterates over `collection`\n   * using `eachFunc`.\n   *\n   * @private\n   * @param {Array|Object} collection The collection to inspect.\n   * @param {Function} predicate The function invoked per iteration.\n   * @param {Function} eachFunc The function to iterate over `collection`.\n   * @returns {*} Returns the found element or its key, else `undefined`.\n   */\n  function baseFindKey(collection, predicate, eachFunc) {\n    var result;\n    eachFunc(collection, function(value, key, collection) {\n      if (predicate(value, key, collection)) {\n        result = key;\n        return false;\n      }\n    });\n    return result;\n  }\n\n  /**\n   * The base implementation of `_.findIndex` and `_.findLastIndex` without\n   * support for iteratee shorthands.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {Function} predicate The function invoked per iteration.\n   * @param {number} fromIndex The index to search from.\n   * @param {boolean} [fromRight] Specify iterating from right to left.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n  function baseFindIndex(array, predicate, fromIndex, fromRight) {\n    var length = array.length,\n        index = fromIndex + (fromRight ? 1 : -1);\n\n    while ((fromRight ? index-- : ++index < length)) {\n      if (predicate(array[index], index, array)) {\n        return index;\n      }\n    }\n    return -1;\n  }\n\n  /**\n   * The base implementation of `_.indexOf` without `fromIndex` bounds checks.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} value The value to search for.\n   * @param {number} fromIndex The index to search from.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n  function baseIndexOf(array, value, fromIndex) {\n    return value === value\n      ? strictIndexOf(array, value, fromIndex)\n      : baseFindIndex(array, baseIsNaN, fromIndex);\n  }\n\n  /**\n   * This function is like `baseIndexOf` except that it accepts a comparator.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} value The value to search for.\n   * @param {number} fromIndex The index to search from.\n   * @param {Function} comparator The comparator invoked per element.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n  function baseIndexOfWith(array, value, fromIndex, comparator) {\n    var index = fromIndex - 1,\n        length = array.length;\n\n    while (++index < length) {\n      if (comparator(array[index], value)) {\n        return index;\n      }\n    }\n    return -1;\n  }\n\n  /**\n   * The base implementation of `_.isNaN` without support for number objects.\n   *\n   * @private\n   * @param {*} value The value to check.\n   * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n   */\n  function baseIsNaN(value) {\n    return value !== value;\n  }\n\n  /**\n   * The base implementation of `_.mean` and `_.meanBy` without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} array The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {number} Returns the mean.\n   */\n  function baseMean(array, iteratee) {\n    var length = array == null ? 0 : array.length;\n    return length ? (baseSum(array, iteratee) / length) : NAN;\n  }\n\n  /**\n   * The base implementation of `_.property` without support for deep paths.\n   *\n   * @private\n   * @param {string} key The key of the property to get.\n   * @returns {Function} Returns the new accessor function.\n   */\n  function baseProperty(key) {\n    return function(object) {\n      return object == null ? undefined : object[key];\n    };\n  }\n\n  /**\n   * The base implementation of `_.propertyOf` without support for deep paths.\n   *\n   * @private\n   * @param {Object} object The object to query.\n   * @returns {Function} Returns the new accessor function.\n   */\n  function basePropertyOf(object) {\n    return function(key) {\n      return object == null ? undefined : object[key];\n    };\n  }\n\n  /**\n   * The base implementation of `_.reduce` and `_.reduceRight`, without support\n   * for iteratee shorthands, which iterates over `collection` using `eachFunc`.\n   *\n   * @private\n   * @param {Array|Object} collection The collection to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @param {*} accumulator The initial value.\n   * @param {boolean} initAccum Specify using the first or last element of\n   *  `collection` as the initial value.\n   * @param {Function} eachFunc The function to iterate over `collection`.\n   * @returns {*} Returns the accumulated value.\n   */\n  function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {\n    eachFunc(collection, function(value, index, collection) {\n      accumulator = initAccum\n        ? (initAccum = false, value)\n        : iteratee(accumulator, value, index, collection);\n    });\n    return accumulator;\n  }\n\n  /**\n   * The base implementation of `_.sortBy` which uses `comparer` to define the\n   * sort order of `array` and replaces criteria objects with their corresponding\n   * values.\n   *\n   * @private\n   * @param {Array} array The array to sort.\n   * @param {Function} comparer The function to define sort order.\n   * @returns {Array} Returns `array`.\n   */\n  function baseSortBy(array, comparer) {\n    var length = array.length;\n\n    array.sort(comparer);\n    while (length--) {\n      array[length] = array[length].value;\n    }\n    return array;\n  }\n\n  /**\n   * The base implementation of `_.sum` and `_.sumBy` without support for\n   * iteratee shorthands.\n   *\n   * @private\n   * @param {Array} array The array to iterate over.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {number} Returns the sum.\n   */\n  function baseSum(array, iteratee) {\n    var result,\n        index = -1,\n        length = array.length;\n\n    while (++index < length) {\n      var current = iteratee(array[index]);\n      if (current !== undefined) {\n        result = result === undefined ? current : (result + current);\n      }\n    }\n    return result;\n  }\n\n  /**\n   * The base implementation of `_.times` without support for iteratee shorthands\n   * or max array length checks.\n   *\n   * @private\n   * @param {number} n The number of times to invoke `iteratee`.\n   * @param {Function} iteratee The function invoked per iteration.\n   * @returns {Array} Returns the array of results.\n   */\n  function baseTimes(n, iteratee) {\n    var index = -1,\n        result = Array(n);\n\n    while (++index < n) {\n      result[index] = iteratee(index);\n    }\n    return result;\n  }\n\n  /**\n   * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array\n   * of key-value pairs for `object` corresponding to the property names of `props`.\n   *\n   * @private\n   * @param {Object} object The object to query.\n   * @param {Array} props The property names to get values for.\n   * @returns {Object} Returns the key-value pairs.\n   */\n  function baseToPairs(object, props) {\n    return arrayMap(props, function(key) {\n      return [key, object[key]];\n    });\n  }\n\n  /**\n   * The base implementation of `_.unary` without support for storing metadata.\n   *\n   * @private\n   * @param {Function} func The function to cap arguments for.\n   * @returns {Function} Returns the new capped function.\n   */\n  function baseUnary(func) {\n    return function(value) {\n      return func(value);\n    };\n  }\n\n  /**\n   * The base implementation of `_.values` and `_.valuesIn` which creates an\n   * array of `object` property values corresponding to the property names\n   * of `props`.\n   *\n   * @private\n   * @param {Object} object The object to query.\n   * @param {Array} props The property names to get values for.\n   * @returns {Object} Returns the array of property values.\n   */\n  function baseValues(object, props) {\n    return arrayMap(props, function(key) {\n      return object[key];\n    });\n  }\n\n  /**\n   * Checks if a `cache` value for `key` exists.\n   *\n   * @private\n   * @param {Object} cache The cache to query.\n   * @param {string} key The key of the entry to check.\n   * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n   */\n  function cacheHas(cache, key) {\n    return cache.has(key);\n  }\n\n  /**\n   * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol\n   * that is not found in the character symbols.\n   *\n   * @private\n   * @param {Array} strSymbols The string symbols to inspect.\n   * @param {Array} chrSymbols The character symbols to find.\n   * @returns {number} Returns the index of the first unmatched string symbol.\n   */\n  function charsStartIndex(strSymbols, chrSymbols) {\n    var index = -1,\n        length = strSymbols.length;\n\n    while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\n    return index;\n  }\n\n  /**\n   * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol\n   * that is not found in the character symbols.\n   *\n   * @private\n   * @param {Array} strSymbols The string symbols to inspect.\n   * @param {Array} chrSymbols The character symbols to find.\n   * @returns {number} Returns the index of the last unmatched string symbol.\n   */\n  function charsEndIndex(strSymbols, chrSymbols) {\n    var index = strSymbols.length;\n\n    while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\n    return index;\n  }\n\n  /**\n   * Gets the number of `placeholder` occurrences in `array`.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} placeholder The placeholder to search for.\n   * @returns {number} Returns the placeholder count.\n   */\n  function countHolders(array, placeholder) {\n    var length = array.length,\n        result = 0;\n\n    while (length--) {\n      if (array[length] === placeholder) {\n        ++result;\n      }\n    }\n    return result;\n  }\n\n  /**\n   * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A\n   * letters to basic Latin letters.\n   *\n   * @private\n   * @param {string} letter The matched letter to deburr.\n   * @returns {string} Returns the deburred letter.\n   */\n  var deburrLetter = basePropertyOf(deburredLetters);\n\n  /**\n   * Used by `_.escape` to convert characters to HTML entities.\n   *\n   * @private\n   * @param {string} chr The matched character to escape.\n   * @returns {string} Returns the escaped character.\n   */\n  var escapeHtmlChar = basePropertyOf(htmlEscapes);\n\n  /**\n   * Used by `_.template` to escape characters for inclusion in compiled string literals.\n   *\n   * @private\n   * @param {string} chr The matched character to escape.\n   * @returns {string} Returns the escaped character.\n   */\n  function escapeStringChar(chr) {\n    return '\\\\' + stringEscapes[chr];\n  }\n\n  /**\n   * Gets the value at `key` of `object`.\n   *\n   * @private\n   * @param {Object} [object] The object to query.\n   * @param {string} key The key of the property to get.\n   * @returns {*} Returns the property value.\n   */\n  function getValue(object, key) {\n    return object == null ? undefined : object[key];\n  }\n\n  /**\n   * Checks if `string` contains Unicode symbols.\n   *\n   * @private\n   * @param {string} string The string to inspect.\n   * @returns {boolean} Returns `true` if a symbol is found, else `false`.\n   */\n  function hasUnicode(string) {\n    return reHasUnicode.test(string);\n  }\n\n  /**\n   * Checks if `string` contains a word composed of Unicode symbols.\n   *\n   * @private\n   * @param {string} string The string to inspect.\n   * @returns {boolean} Returns `true` if a word is found, else `false`.\n   */\n  function hasUnicodeWord(string) {\n    return reHasUnicodeWord.test(string);\n  }\n\n  /**\n   * Converts `iterator` to an array.\n   *\n   * @private\n   * @param {Object} iterator The iterator to convert.\n   * @returns {Array} Returns the converted array.\n   */\n  function iteratorToArray(iterator) {\n    var data,\n        result = [];\n\n    while (!(data = iterator.next()).done) {\n      result.push(data.value);\n    }\n    return result;\n  }\n\n  /**\n   * Converts `map` to its key-value pairs.\n   *\n   * @private\n   * @param {Object} map The map to convert.\n   * @returns {Array} Returns the key-value pairs.\n   */\n  function mapToArray(map) {\n    var index = -1,\n        result = Array(map.size);\n\n    map.forEach(function(value, key) {\n      result[++index] = [key, value];\n    });\n    return result;\n  }\n\n  /**\n   * Creates a unary function that invokes `func` with its argument transformed.\n   *\n   * @private\n   * @param {Function} func The function to wrap.\n   * @param {Function} transform The argument transform.\n   * @returns {Function} Returns the new function.\n   */\n  function overArg(func, transform) {\n    return function(arg) {\n      return func(transform(arg));\n    };\n  }\n\n  /**\n   * Replaces all `placeholder` elements in `array` with an internal placeholder\n   * and returns an array of their indexes.\n   *\n   * @private\n   * @param {Array} array The array to modify.\n   * @param {*} placeholder The placeholder to replace.\n   * @returns {Array} Returns the new array of placeholder indexes.\n   */\n  function replaceHolders(array, placeholder) {\n    var index = -1,\n        length = array.length,\n        resIndex = 0,\n        result = [];\n\n    while (++index < length) {\n      var value = array[index];\n      if (value === placeholder || value === PLACEHOLDER) {\n        array[index] = PLACEHOLDER;\n        result[resIndex++] = index;\n      }\n    }\n    return result;\n  }\n\n  /**\n   * Converts `set` to an array of its values.\n   *\n   * @private\n   * @param {Object} set The set to convert.\n   * @returns {Array} Returns the values.\n   */\n  function setToArray(set) {\n    var index = -1,\n        result = Array(set.size);\n\n    set.forEach(function(value) {\n      result[++index] = value;\n    });\n    return result;\n  }\n\n  /**\n   * Converts `set` to its value-value pairs.\n   *\n   * @private\n   * @param {Object} set The set to convert.\n   * @returns {Array} Returns the value-value pairs.\n   */\n  function setToPairs(set) {\n    var index = -1,\n        result = Array(set.size);\n\n    set.forEach(function(value) {\n      result[++index] = [value, value];\n    });\n    return result;\n  }\n\n  /**\n   * A specialized version of `_.indexOf` which performs strict equality\n   * comparisons of values, i.e. `===`.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} value The value to search for.\n   * @param {number} fromIndex The index to search from.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n  function strictIndexOf(array, value, fromIndex) {\n    var index = fromIndex - 1,\n        length = array.length;\n\n    while (++index < length) {\n      if (array[index] === value) {\n        return index;\n      }\n    }\n    return -1;\n  }\n\n  /**\n   * A specialized version of `_.lastIndexOf` which performs strict equality\n   * comparisons of values, i.e. `===`.\n   *\n   * @private\n   * @param {Array} array The array to inspect.\n   * @param {*} value The value to search for.\n   * @param {number} fromIndex The index to search from.\n   * @returns {number} Returns the index of the matched value, else `-1`.\n   */\n  function strictLastIndexOf(array, value, fromIndex) {\n    var index = fromIndex + 1;\n    while (index--) {\n      if (array[index] === value) {\n        return index;\n      }\n    }\n    return index;\n  }\n\n  /**\n   * Gets the number of symbols in `string`.\n   *\n   * @private\n   * @param {string} string The string to inspect.\n   * @returns {number} Returns the string size.\n   */\n  function stringSize(string) {\n    return hasUnicode(string)\n      ? unicodeSize(string)\n      : asciiSize(string);\n  }\n\n  /**\n   * Converts `string` to an array.\n   *\n   * @private\n   * @param {string} string The string to convert.\n   * @returns {Array} Returns the converted array.\n   */\n  function stringToArray(string) {\n    return hasUnicode(string)\n      ? unicodeToArray(string)\n      : asciiToArray(string);\n  }\n\n  /**\n   * Used by `_.unescape` to convert HTML entities to characters.\n   *\n   * @private\n   * @param {string} chr The matched character to unescape.\n   * @returns {string} Returns the unescaped character.\n   */\n  var unescapeHtmlChar = basePropertyOf(htmlUnescapes);\n\n  /**\n   * Gets the size of a Unicode `string`.\n   *\n   * @private\n   * @param {string} string The string inspect.\n   * @returns {number} Returns the string size.\n   */\n  function unicodeSize(string) {\n    var result = reUnicode.lastIndex = 0;\n    while (reUnicode.test(string)) {\n      ++result;\n    }\n    return result;\n  }\n\n  /**\n   * Converts a Unicode `string` to an array.\n   *\n   * @private\n   * @param {string} string The string to convert.\n   * @returns {Array} Returns the converted array.\n   */\n  function unicodeToArray(string) {\n    return string.match(reUnicode) || [];\n  }\n\n  /**\n   * Splits a Unicode `string` into an array of its words.\n   *\n   * @private\n   * @param {string} The string to inspect.\n   * @returns {Array} Returns the words of `string`.\n   */\n  function unicodeWords(string) {\n    return string.match(reUnicodeWord) || [];\n  }\n\n  /*--------------------------------------------------------------------------*/\n\n  /**\n   * Create a new pristine `lodash` function using the `context` object.\n   *\n   * @static\n   * @memberOf _\n   * @since 1.1.0\n   * @category Util\n   * @param {Object} [context=root] The context object.\n   * @returns {Function} Returns a new `lodash` function.\n   * @example\n   *\n   * _.mixin({ 'foo': _.constant('foo') });\n   *\n   * var lodash = _.runInContext();\n   * lodash.mixin({ 'bar': lodash.constant('bar') });\n   *\n   * _.isFunction(_.foo);\n   * // => true\n   * _.isFunction(_.bar);\n   * // => false\n   *\n   * lodash.isFunction(lodash.foo);\n   * // => false\n   * lodash.isFunction(lodash.bar);\n   * // => true\n   *\n   * // Create a suped-up `defer` in Node.js.\n   * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;\n   */\n  var runInContext = (function runInContext(context) {\n    context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));\n\n    /** Built-in constructor references. */\n    var Array = context.Array,\n        Date = context.Date,\n        Error = context.Error,\n        Function = context.Function,\n        Math = context.Math,\n        Object = context.Object,\n        RegExp = context.RegExp,\n        String = context.String,\n        TypeError = context.TypeError;\n\n    /** Used for built-in method references. */\n    var arrayProto = Array.prototype,\n        funcProto = Function.prototype,\n        objectProto = Object.prototype;\n\n    /** Used to detect overreaching core-js shims. */\n    var coreJsData = context['__core-js_shared__'];\n\n    /** Used to resolve the decompiled source of functions. */\n    var funcToString = funcProto.toString;\n\n    /** Used to check objects for own properties. */\n    var hasOwnProperty = objectProto.hasOwnProperty;\n\n    /** Used to generate unique IDs. */\n    var idCounter = 0;\n\n    /** Used to detect methods masquerading as native. */\n    var maskSrcKey = (function() {\n      var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');\n      return uid ? ('Symbol(src)_1.' + uid) : '';\n    }());\n\n    /**\n     * Used to resolve the\n     * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n     * of values.\n     */\n    var nativeObjectToString = objectProto.toString;\n\n    /** Used to infer the `Object` constructor. */\n    var objectCtorString = funcToString.call(Object);\n\n    /** Used to restore the original `_` reference in `_.noConflict`. */\n    var oldDash = root._;\n\n    /** Used to detect if a method is native. */\n    var reIsNative = RegExp('^' +\n      funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&')\n      .replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$'\n    );\n\n    /** Built-in value references. */\n    var Buffer = moduleExports ? context.Buffer : undefined,\n        Symbol = context.Symbol,\n        Uint8Array = context.Uint8Array,\n        allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,\n        getPrototype = overArg(Object.getPrototypeOf, Object),\n        objectCreate = Object.create,\n        propertyIsEnumerable = objectProto.propertyIsEnumerable,\n        splice = arrayProto.splice,\n        spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined,\n        symIterator = Symbol ? Symbol.iterator : undefined,\n        symToStringTag = Symbol ? Symbol.toStringTag : undefined;\n\n    var defineProperty = (function() {\n      try {\n        var func = getNative(Object, 'defineProperty');\n        func({}, '', {});\n        return func;\n      } catch (e) {}\n    }());\n\n    /** Mocked built-ins. */\n    var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,\n        ctxNow = Date && Date.now !== root.Date.now && Date.now,\n        ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;\n\n    /* Built-in method references for those with the same name as other `lodash` methods. */\n    var nativeCeil = Math.ceil,\n        nativeFloor = Math.floor,\n        nativeGetSymbols = Object.getOwnPropertySymbols,\n        nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,\n        nativeIsFinite = context.isFinite,\n        nativeJoin = arrayProto.join,\n        nativeKeys = overArg(Object.keys, Object),\n        nativeMax = Math.max,\n        nativeMin = Math.min,\n        nativeNow = Date.now,\n        nativeParseInt = context.parseInt,\n        nativeRandom = Math.random,\n        nativeReverse = arrayProto.reverse;\n\n    /* Built-in method references that are verified to be native. */\n    var DataView = getNative(context, 'DataView'),\n        Map = getNative(context, 'Map'),\n        Promise = getNative(context, 'Promise'),\n        Set = getNative(context, 'Set'),\n        WeakMap = getNative(context, 'WeakMap'),\n        nativeCreate = getNative(Object, 'create');\n\n    /** Used to store function metadata. */\n    var metaMap = WeakMap && new WeakMap;\n\n    /** Used to lookup unminified function names. */\n    var realNames = {};\n\n    /** Used to detect maps, sets, and weakmaps. */\n    var dataViewCtorString = toSource(DataView),\n        mapCtorString = toSource(Map),\n        promiseCtorString = toSource(Promise),\n        setCtorString = toSource(Set),\n        weakMapCtorString = toSource(WeakMap);\n\n    /** Used to convert symbols to primitives and strings. */\n    var symbolProto = Symbol ? Symbol.prototype : undefined,\n        symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,\n        symbolToString = symbolProto ? symbolProto.toString : undefined;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a `lodash` object which wraps `value` to enable implicit method\n     * chain sequences. Methods that operate on and return arrays, collections,\n     * and functions can be chained together. Methods that retrieve a single value\n     * or may return a primitive value will automatically end the chain sequence\n     * and return the unwrapped value. Otherwise, the value must be unwrapped\n     * with `_#value`.\n     *\n     * Explicit chain sequences, which must be unwrapped with `_#value`, may be\n     * enabled using `_.chain`.\n     *\n     * The execution of chained methods is lazy, that is, it's deferred until\n     * `_#value` is implicitly or explicitly called.\n     *\n     * Lazy evaluation allows several methods to support shortcut fusion.\n     * Shortcut fusion is an optimization to merge iteratee calls; this avoids\n     * the creation of intermediate arrays and can greatly reduce the number of\n     * iteratee executions. Sections of a chain sequence qualify for shortcut\n     * fusion if the section is applied to an array and iteratees accept only\n     * one argument. The heuristic for whether a section qualifies for shortcut\n     * fusion is subject to change.\n     *\n     * Chaining is supported in custom builds as long as the `_#value` method is\n     * directly or indirectly included in the build.\n     *\n     * In addition to lodash methods, wrappers have `Array` and `String` methods.\n     *\n     * The wrapper `Array` methods are:\n     * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`\n     *\n     * The wrapper `String` methods are:\n     * `replace` and `split`\n     *\n     * The wrapper methods that support shortcut fusion are:\n     * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,\n     * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,\n     * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`\n     *\n     * The chainable wrapper methods are:\n     * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,\n     * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,\n     * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,\n     * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,\n     * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,\n     * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,\n     * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,\n     * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,\n     * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,\n     * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,\n     * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,\n     * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,\n     * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,\n     * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,\n     * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,\n     * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,\n     * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,\n     * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,\n     * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,\n     * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,\n     * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,\n     * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,\n     * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,\n     * `zipObject`, `zipObjectDeep`, and `zipWith`\n     *\n     * The wrapper methods that are **not** chainable by default are:\n     * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,\n     * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,\n     * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,\n     * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,\n     * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,\n     * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,\n     * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,\n     * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,\n     * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,\n     * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,\n     * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,\n     * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,\n     * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,\n     * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,\n     * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,\n     * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,\n     * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,\n     * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,\n     * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,\n     * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,\n     * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,\n     * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,\n     * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,\n     * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,\n     * `upperFirst`, `value`, and `words`\n     *\n     * @name _\n     * @constructor\n     * @category Seq\n     * @param {*} value The value to wrap in a `lodash` instance.\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var wrapped = _([1, 2, 3]);\n     *\n     * // Returns an unwrapped value.\n     * wrapped.reduce(_.add);\n     * // => 6\n     *\n     * // Returns a wrapped value.\n     * var squares = wrapped.map(square);\n     *\n     * _.isArray(squares);\n     * // => false\n     *\n     * _.isArray(squares.value());\n     * // => true\n     */\n    function lodash(value) {\n      if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {\n        if (value instanceof LodashWrapper) {\n          return value;\n        }\n        if (hasOwnProperty.call(value, '__wrapped__')) {\n          return wrapperClone(value);\n        }\n      }\n      return new LodashWrapper(value);\n    }\n\n    /**\n     * The base implementation of `_.create` without support for assigning\n     * properties to the created object.\n     *\n     * @private\n     * @param {Object} proto The object to inherit from.\n     * @returns {Object} Returns the new object.\n     */\n    var baseCreate = (function() {\n      function object() {}\n      return function(proto) {\n        if (!isObject(proto)) {\n          return {};\n        }\n        if (objectCreate) {\n          return objectCreate(proto);\n        }\n        object.prototype = proto;\n        var result = new object;\n        object.prototype = undefined;\n        return result;\n      };\n    }());\n\n    /**\n     * The function whose prototype chain sequence wrappers inherit from.\n     *\n     * @private\n     */\n    function baseLodash() {\n      // No operation performed.\n    }\n\n    /**\n     * The base constructor for creating `lodash` wrapper objects.\n     *\n     * @private\n     * @param {*} value The value to wrap.\n     * @param {boolean} [chainAll] Enable explicit method chain sequences.\n     */\n    function LodashWrapper(value, chainAll) {\n      this.__wrapped__ = value;\n      this.__actions__ = [];\n      this.__chain__ = !!chainAll;\n      this.__index__ = 0;\n      this.__values__ = undefined;\n    }\n\n    /**\n     * By default, the template delimiters used by lodash are like those in\n     * embedded Ruby (ERB) as well as ES2015 template strings. Change the\n     * following template settings to use alternative delimiters.\n     *\n     * @static\n     * @memberOf _\n     * @type {Object}\n     */\n    lodash.templateSettings = {\n\n      /**\n       * Used to detect `data` property values to be HTML-escaped.\n       *\n       * @memberOf _.templateSettings\n       * @type {RegExp}\n       */\n      'escape': reEscape,\n\n      /**\n       * Used to detect code to be evaluated.\n       *\n       * @memberOf _.templateSettings\n       * @type {RegExp}\n       */\n      'evaluate': reEvaluate,\n\n      /**\n       * Used to detect `data` property values to inject.\n       *\n       * @memberOf _.templateSettings\n       * @type {RegExp}\n       */\n      'interpolate': reInterpolate,\n\n      /**\n       * Used to reference the data object in the template text.\n       *\n       * @memberOf _.templateSettings\n       * @type {string}\n       */\n      'variable': '',\n\n      /**\n       * Used to import variables into the compiled template.\n       *\n       * @memberOf _.templateSettings\n       * @type {Object}\n       */\n      'imports': {\n\n        /**\n         * A reference to the `lodash` function.\n         *\n         * @memberOf _.templateSettings.imports\n         * @type {Function}\n         */\n        '_': lodash\n      }\n    };\n\n    // Ensure wrappers are instances of `baseLodash`.\n    lodash.prototype = baseLodash.prototype;\n    lodash.prototype.constructor = lodash;\n\n    LodashWrapper.prototype = baseCreate(baseLodash.prototype);\n    LodashWrapper.prototype.constructor = LodashWrapper;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.\n     *\n     * @private\n     * @constructor\n     * @param {*} value The value to wrap.\n     */\n    function LazyWrapper(value) {\n      this.__wrapped__ = value;\n      this.__actions__ = [];\n      this.__dir__ = 1;\n      this.__filtered__ = false;\n      this.__iteratees__ = [];\n      this.__takeCount__ = MAX_ARRAY_LENGTH;\n      this.__views__ = [];\n    }\n\n    /**\n     * Creates a clone of the lazy wrapper object.\n     *\n     * @private\n     * @name clone\n     * @memberOf LazyWrapper\n     * @returns {Object} Returns the cloned `LazyWrapper` object.\n     */\n    function lazyClone() {\n      var result = new LazyWrapper(this.__wrapped__);\n      result.__actions__ = copyArray(this.__actions__);\n      result.__dir__ = this.__dir__;\n      result.__filtered__ = this.__filtered__;\n      result.__iteratees__ = copyArray(this.__iteratees__);\n      result.__takeCount__ = this.__takeCount__;\n      result.__views__ = copyArray(this.__views__);\n      return result;\n    }\n\n    /**\n     * Reverses the direction of lazy iteration.\n     *\n     * @private\n     * @name reverse\n     * @memberOf LazyWrapper\n     * @returns {Object} Returns the new reversed `LazyWrapper` object.\n     */\n    function lazyReverse() {\n      if (this.__filtered__) {\n        var result = new LazyWrapper(this);\n        result.__dir__ = -1;\n        result.__filtered__ = true;\n      } else {\n        result = this.clone();\n        result.__dir__ *= -1;\n      }\n      return result;\n    }\n\n    /**\n     * Extracts the unwrapped value from its lazy wrapper.\n     *\n     * @private\n     * @name value\n     * @memberOf LazyWrapper\n     * @returns {*} Returns the unwrapped value.\n     */\n    function lazyValue() {\n      var array = this.__wrapped__.value(),\n          dir = this.__dir__,\n          isArr = isArray(array),\n          isRight = dir < 0,\n          arrLength = isArr ? array.length : 0,\n          view = getView(0, arrLength, this.__views__),\n          start = view.start,\n          end = view.end,\n          length = end - start,\n          index = isRight ? end : (start - 1),\n          iteratees = this.__iteratees__,\n          iterLength = iteratees.length,\n          resIndex = 0,\n          takeCount = nativeMin(length, this.__takeCount__);\n\n      if (!isArr || (!isRight && arrLength == length && takeCount == length)) {\n        return baseWrapperValue(array, this.__actions__);\n      }\n      var result = [];\n\n      outer:\n      while (length-- && resIndex < takeCount) {\n        index += dir;\n\n        var iterIndex = -1,\n            value = array[index];\n\n        while (++iterIndex < iterLength) {\n          var data = iteratees[iterIndex],\n              iteratee = data.iteratee,\n              type = data.type,\n              computed = iteratee(value);\n\n          if (type == LAZY_MAP_FLAG) {\n            value = computed;\n          } else if (!computed) {\n            if (type == LAZY_FILTER_FLAG) {\n              continue outer;\n            } else {\n              break outer;\n            }\n          }\n        }\n        result[resIndex++] = value;\n      }\n      return result;\n    }\n\n    // Ensure `LazyWrapper` is an instance of `baseLodash`.\n    LazyWrapper.prototype = baseCreate(baseLodash.prototype);\n    LazyWrapper.prototype.constructor = LazyWrapper;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a hash object.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [entries] The key-value pairs to cache.\n     */\n    function Hash(entries) {\n      var index = -1,\n          length = entries == null ? 0 : entries.length;\n\n      this.clear();\n      while (++index < length) {\n        var entry = entries[index];\n        this.set(entry[0], entry[1]);\n      }\n    }\n\n    /**\n     * Removes all key-value entries from the hash.\n     *\n     * @private\n     * @name clear\n     * @memberOf Hash\n     */\n    function hashClear() {\n      this.__data__ = nativeCreate ? nativeCreate(null) : {};\n      this.size = 0;\n    }\n\n    /**\n     * Removes `key` and its value from the hash.\n     *\n     * @private\n     * @name delete\n     * @memberOf Hash\n     * @param {Object} hash The hash to modify.\n     * @param {string} key The key of the value to remove.\n     * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n     */\n    function hashDelete(key) {\n      var result = this.has(key) && delete this.__data__[key];\n      this.size -= result ? 1 : 0;\n      return result;\n    }\n\n    /**\n     * Gets the hash value for `key`.\n     *\n     * @private\n     * @name get\n     * @memberOf Hash\n     * @param {string} key The key of the value to get.\n     * @returns {*} Returns the entry value.\n     */\n    function hashGet(key) {\n      var data = this.__data__;\n      if (nativeCreate) {\n        var result = data[key];\n        return result === HASH_UNDEFINED ? undefined : result;\n      }\n      return hasOwnProperty.call(data, key) ? data[key] : undefined;\n    }\n\n    /**\n     * Checks if a hash value for `key` exists.\n     *\n     * @private\n     * @name has\n     * @memberOf Hash\n     * @param {string} key The key of the entry to check.\n     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n     */\n    function hashHas(key) {\n      var data = this.__data__;\n      return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);\n    }\n\n    /**\n     * Sets the hash `key` to `value`.\n     *\n     * @private\n     * @name set\n     * @memberOf Hash\n     * @param {string} key The key of the value to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns the hash instance.\n     */\n    function hashSet(key, value) {\n      var data = this.__data__;\n      this.size += this.has(key) ? 0 : 1;\n      data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;\n      return this;\n    }\n\n    // Add methods to `Hash`.\n    Hash.prototype.clear = hashClear;\n    Hash.prototype['delete'] = hashDelete;\n    Hash.prototype.get = hashGet;\n    Hash.prototype.has = hashHas;\n    Hash.prototype.set = hashSet;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates an list cache object.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [entries] The key-value pairs to cache.\n     */\n    function ListCache(entries) {\n      var index = -1,\n          length = entries == null ? 0 : entries.length;\n\n      this.clear();\n      while (++index < length) {\n        var entry = entries[index];\n        this.set(entry[0], entry[1]);\n      }\n    }\n\n    /**\n     * Removes all key-value entries from the list cache.\n     *\n     * @private\n     * @name clear\n     * @memberOf ListCache\n     */\n    function listCacheClear() {\n      this.__data__ = [];\n      this.size = 0;\n    }\n\n    /**\n     * Removes `key` and its value from the list cache.\n     *\n     * @private\n     * @name delete\n     * @memberOf ListCache\n     * @param {string} key The key of the value to remove.\n     * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n     */\n    function listCacheDelete(key) {\n      var data = this.__data__,\n          index = assocIndexOf(data, key);\n\n      if (index < 0) {\n        return false;\n      }\n      var lastIndex = data.length - 1;\n      if (index == lastIndex) {\n        data.pop();\n      } else {\n        splice.call(data, index, 1);\n      }\n      --this.size;\n      return true;\n    }\n\n    /**\n     * Gets the list cache value for `key`.\n     *\n     * @private\n     * @name get\n     * @memberOf ListCache\n     * @param {string} key The key of the value to get.\n     * @returns {*} Returns the entry value.\n     */\n    function listCacheGet(key) {\n      var data = this.__data__,\n          index = assocIndexOf(data, key);\n\n      return index < 0 ? undefined : data[index][1];\n    }\n\n    /**\n     * Checks if a list cache value for `key` exists.\n     *\n     * @private\n     * @name has\n     * @memberOf ListCache\n     * @param {string} key The key of the entry to check.\n     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n     */\n    function listCacheHas(key) {\n      return assocIndexOf(this.__data__, key) > -1;\n    }\n\n    /**\n     * Sets the list cache `key` to `value`.\n     *\n     * @private\n     * @name set\n     * @memberOf ListCache\n     * @param {string} key The key of the value to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns the list cache instance.\n     */\n    function listCacheSet(key, value) {\n      var data = this.__data__,\n          index = assocIndexOf(data, key);\n\n      if (index < 0) {\n        ++this.size;\n        data.push([key, value]);\n      } else {\n        data[index][1] = value;\n      }\n      return this;\n    }\n\n    // Add methods to `ListCache`.\n    ListCache.prototype.clear = listCacheClear;\n    ListCache.prototype['delete'] = listCacheDelete;\n    ListCache.prototype.get = listCacheGet;\n    ListCache.prototype.has = listCacheHas;\n    ListCache.prototype.set = listCacheSet;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a map cache object to store key-value pairs.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [entries] The key-value pairs to cache.\n     */\n    function MapCache(entries) {\n      var index = -1,\n          length = entries == null ? 0 : entries.length;\n\n      this.clear();\n      while (++index < length) {\n        var entry = entries[index];\n        this.set(entry[0], entry[1]);\n      }\n    }\n\n    /**\n     * Removes all key-value entries from the map.\n     *\n     * @private\n     * @name clear\n     * @memberOf MapCache\n     */\n    function mapCacheClear() {\n      this.size = 0;\n      this.__data__ = {\n        'hash': new Hash,\n        'map': new (Map || ListCache),\n        'string': new Hash\n      };\n    }\n\n    /**\n     * Removes `key` and its value from the map.\n     *\n     * @private\n     * @name delete\n     * @memberOf MapCache\n     * @param {string} key The key of the value to remove.\n     * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n     */\n    function mapCacheDelete(key) {\n      var result = getMapData(this, key)['delete'](key);\n      this.size -= result ? 1 : 0;\n      return result;\n    }\n\n    /**\n     * Gets the map value for `key`.\n     *\n     * @private\n     * @name get\n     * @memberOf MapCache\n     * @param {string} key The key of the value to get.\n     * @returns {*} Returns the entry value.\n     */\n    function mapCacheGet(key) {\n      return getMapData(this, key).get(key);\n    }\n\n    /**\n     * Checks if a map value for `key` exists.\n     *\n     * @private\n     * @name has\n     * @memberOf MapCache\n     * @param {string} key The key of the entry to check.\n     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n     */\n    function mapCacheHas(key) {\n      return getMapData(this, key).has(key);\n    }\n\n    /**\n     * Sets the map `key` to `value`.\n     *\n     * @private\n     * @name set\n     * @memberOf MapCache\n     * @param {string} key The key of the value to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns the map cache instance.\n     */\n    function mapCacheSet(key, value) {\n      var data = getMapData(this, key),\n          size = data.size;\n\n      data.set(key, value);\n      this.size += data.size == size ? 0 : 1;\n      return this;\n    }\n\n    // Add methods to `MapCache`.\n    MapCache.prototype.clear = mapCacheClear;\n    MapCache.prototype['delete'] = mapCacheDelete;\n    MapCache.prototype.get = mapCacheGet;\n    MapCache.prototype.has = mapCacheHas;\n    MapCache.prototype.set = mapCacheSet;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     *\n     * Creates an array cache object to store unique values.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [values] The values to cache.\n     */\n    function SetCache(values) {\n      var index = -1,\n          length = values == null ? 0 : values.length;\n\n      this.__data__ = new MapCache;\n      while (++index < length) {\n        this.add(values[index]);\n      }\n    }\n\n    /**\n     * Adds `value` to the array cache.\n     *\n     * @private\n     * @name add\n     * @memberOf SetCache\n     * @alias push\n     * @param {*} value The value to cache.\n     * @returns {Object} Returns the cache instance.\n     */\n    function setCacheAdd(value) {\n      this.__data__.set(value, HASH_UNDEFINED);\n      return this;\n    }\n\n    /**\n     * Checks if `value` is in the array cache.\n     *\n     * @private\n     * @name has\n     * @memberOf SetCache\n     * @param {*} value The value to search for.\n     * @returns {number} Returns `true` if `value` is found, else `false`.\n     */\n    function setCacheHas(value) {\n      return this.__data__.has(value);\n    }\n\n    // Add methods to `SetCache`.\n    SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;\n    SetCache.prototype.has = setCacheHas;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a stack cache object to store key-value pairs.\n     *\n     * @private\n     * @constructor\n     * @param {Array} [entries] The key-value pairs to cache.\n     */\n    function Stack(entries) {\n      var data = this.__data__ = new ListCache(entries);\n      this.size = data.size;\n    }\n\n    /**\n     * Removes all key-value entries from the stack.\n     *\n     * @private\n     * @name clear\n     * @memberOf Stack\n     */\n    function stackClear() {\n      this.__data__ = new ListCache;\n      this.size = 0;\n    }\n\n    /**\n     * Removes `key` and its value from the stack.\n     *\n     * @private\n     * @name delete\n     * @memberOf Stack\n     * @param {string} key The key of the value to remove.\n     * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n     */\n    function stackDelete(key) {\n      var data = this.__data__,\n          result = data['delete'](key);\n\n      this.size = data.size;\n      return result;\n    }\n\n    /**\n     * Gets the stack value for `key`.\n     *\n     * @private\n     * @name get\n     * @memberOf Stack\n     * @param {string} key The key of the value to get.\n     * @returns {*} Returns the entry value.\n     */\n    function stackGet(key) {\n      return this.__data__.get(key);\n    }\n\n    /**\n     * Checks if a stack value for `key` exists.\n     *\n     * @private\n     * @name has\n     * @memberOf Stack\n     * @param {string} key The key of the entry to check.\n     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n     */\n    function stackHas(key) {\n      return this.__data__.has(key);\n    }\n\n    /**\n     * Sets the stack `key` to `value`.\n     *\n     * @private\n     * @name set\n     * @memberOf Stack\n     * @param {string} key The key of the value to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns the stack cache instance.\n     */\n    function stackSet(key, value) {\n      var data = this.__data__;\n      if (data instanceof ListCache) {\n        var pairs = data.__data__;\n        if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {\n          pairs.push([key, value]);\n          this.size = ++data.size;\n          return this;\n        }\n        data = this.__data__ = new MapCache(pairs);\n      }\n      data.set(key, value);\n      this.size = data.size;\n      return this;\n    }\n\n    // Add methods to `Stack`.\n    Stack.prototype.clear = stackClear;\n    Stack.prototype['delete'] = stackDelete;\n    Stack.prototype.get = stackGet;\n    Stack.prototype.has = stackHas;\n    Stack.prototype.set = stackSet;\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates an array of the enumerable property names of the array-like `value`.\n     *\n     * @private\n     * @param {*} value The value to query.\n     * @param {boolean} inherited Specify returning inherited property names.\n     * @returns {Array} Returns the array of property names.\n     */\n    function arrayLikeKeys(value, inherited) {\n      var isArr = isArray(value),\n          isArg = !isArr && isArguments(value),\n          isBuff = !isArr && !isArg && isBuffer(value),\n          isType = !isArr && !isArg && !isBuff && isTypedArray(value),\n          skipIndexes = isArr || isArg || isBuff || isType,\n          result = skipIndexes ? baseTimes(value.length, String) : [],\n          length = result.length;\n\n      for (var key in value) {\n        if ((inherited || hasOwnProperty.call(value, key)) &&\n            !(skipIndexes && (\n               // Safari 9 has enumerable `arguments.length` in strict mode.\n               key == 'length' ||\n               // Node.js 0.10 has enumerable non-index properties on buffers.\n               (isBuff && (key == 'offset' || key == 'parent')) ||\n               // PhantomJS 2 has enumerable non-index properties on typed arrays.\n               (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||\n               // Skip index properties.\n               isIndex(key, length)\n            ))) {\n          result.push(key);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * A specialized version of `_.sample` for arrays.\n     *\n     * @private\n     * @param {Array} array The array to sample.\n     * @returns {*} Returns the random element.\n     */\n    function arraySample(array) {\n      var length = array.length;\n      return length ? array[baseRandom(0, length - 1)] : undefined;\n    }\n\n    /**\n     * A specialized version of `_.sampleSize` for arrays.\n     *\n     * @private\n     * @param {Array} array The array to sample.\n     * @param {number} n The number of elements to sample.\n     * @returns {Array} Returns the random elements.\n     */\n    function arraySampleSize(array, n) {\n      return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));\n    }\n\n    /**\n     * A specialized version of `_.shuffle` for arrays.\n     *\n     * @private\n     * @param {Array} array The array to shuffle.\n     * @returns {Array} Returns the new shuffled array.\n     */\n    function arrayShuffle(array) {\n      return shuffleSelf(copyArray(array));\n    }\n\n    /**\n     * This function is like `assignValue` except that it doesn't assign\n     * `undefined` values.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {string} key The key of the property to assign.\n     * @param {*} value The value to assign.\n     */\n    function assignMergeValue(object, key, value) {\n      if ((value !== undefined && !eq(object[key], value)) ||\n          (value === undefined && !(key in object))) {\n        baseAssignValue(object, key, value);\n      }\n    }\n\n    /**\n     * Assigns `value` to `key` of `object` if the existing value is not equivalent\n     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {string} key The key of the property to assign.\n     * @param {*} value The value to assign.\n     */\n    function assignValue(object, key, value) {\n      var objValue = object[key];\n      if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||\n          (value === undefined && !(key in object))) {\n        baseAssignValue(object, key, value);\n      }\n    }\n\n    /**\n     * Gets the index at which the `key` is found in `array` of key-value pairs.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {*} key The key to search for.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     */\n    function assocIndexOf(array, key) {\n      var length = array.length;\n      while (length--) {\n        if (eq(array[length][0], key)) {\n          return length;\n        }\n      }\n      return -1;\n    }\n\n    /**\n     * Aggregates elements of `collection` on `accumulator` with keys transformed\n     * by `iteratee` and values set by `setter`.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} setter The function to set `accumulator` values.\n     * @param {Function} iteratee The iteratee to transform keys.\n     * @param {Object} accumulator The initial aggregated object.\n     * @returns {Function} Returns `accumulator`.\n     */\n    function baseAggregator(collection, setter, iteratee, accumulator) {\n      baseEach(collection, function(value, key, collection) {\n        setter(accumulator, value, iteratee(value), collection);\n      });\n      return accumulator;\n    }\n\n    /**\n     * The base implementation of `_.assign` without support for multiple sources\n     * or `customizer` functions.\n     *\n     * @private\n     * @param {Object} object The destination object.\n     * @param {Object} source The source object.\n     * @returns {Object} Returns `object`.\n     */\n    function baseAssign(object, source) {\n      return object && copyObject(source, keys(source), object);\n    }\n\n    /**\n     * The base implementation of `_.assignIn` without support for multiple sources\n     * or `customizer` functions.\n     *\n     * @private\n     * @param {Object} object The destination object.\n     * @param {Object} source The source object.\n     * @returns {Object} Returns `object`.\n     */\n    function baseAssignIn(object, source) {\n      return object && copyObject(source, keysIn(source), object);\n    }\n\n    /**\n     * The base implementation of `assignValue` and `assignMergeValue` without\n     * value checks.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {string} key The key of the property to assign.\n     * @param {*} value The value to assign.\n     */\n    function baseAssignValue(object, key, value) {\n      if (key == '__proto__' && defineProperty) {\n        defineProperty(object, key, {\n          'configurable': true,\n          'enumerable': true,\n          'value': value,\n          'writable': true\n        });\n      } else {\n        object[key] = value;\n      }\n    }\n\n    /**\n     * The base implementation of `_.at` without support for individual paths.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {string[]} paths The property paths to pick.\n     * @returns {Array} Returns the picked elements.\n     */\n    function baseAt(object, paths) {\n      var index = -1,\n          length = paths.length,\n          result = Array(length),\n          skip = object == null;\n\n      while (++index < length) {\n        result[index] = skip ? undefined : get(object, paths[index]);\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.clamp` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {number} number The number to clamp.\n     * @param {number} [lower] The lower bound.\n     * @param {number} upper The upper bound.\n     * @returns {number} Returns the clamped number.\n     */\n    function baseClamp(number, lower, upper) {\n      if (number === number) {\n        if (upper !== undefined) {\n          number = number <= upper ? number : upper;\n        }\n        if (lower !== undefined) {\n          number = number >= lower ? number : lower;\n        }\n      }\n      return number;\n    }\n\n    /**\n     * The base implementation of `_.clone` and `_.cloneDeep` which tracks\n     * traversed objects.\n     *\n     * @private\n     * @param {*} value The value to clone.\n     * @param {boolean} bitmask The bitmask flags.\n     *  1 - Deep clone\n     *  2 - Flatten inherited properties\n     *  4 - Clone symbols\n     * @param {Function} [customizer] The function to customize cloning.\n     * @param {string} [key] The key of `value`.\n     * @param {Object} [object] The parent object of `value`.\n     * @param {Object} [stack] Tracks traversed objects and their clone counterparts.\n     * @returns {*} Returns the cloned value.\n     */\n    function baseClone(value, bitmask, customizer, key, object, stack) {\n      var result,\n          isDeep = bitmask & CLONE_DEEP_FLAG,\n          isFlat = bitmask & CLONE_FLAT_FLAG,\n          isFull = bitmask & CLONE_SYMBOLS_FLAG;\n\n      if (customizer) {\n        result = object ? customizer(value, key, object, stack) : customizer(value);\n      }\n      if (result !== undefined) {\n        return result;\n      }\n      if (!isObject(value)) {\n        return value;\n      }\n      var isArr = isArray(value);\n      if (isArr) {\n        result = initCloneArray(value);\n        if (!isDeep) {\n          return copyArray(value, result);\n        }\n      } else {\n        var tag = getTag(value),\n            isFunc = tag == funcTag || tag == genTag;\n\n        if (isBuffer(value)) {\n          return cloneBuffer(value, isDeep);\n        }\n        if (tag == objectTag || tag == argsTag || (isFunc && !object)) {\n          result = (isFlat || isFunc) ? {} : initCloneObject(value);\n          if (!isDeep) {\n            return isFlat\n              ? copySymbolsIn(value, baseAssignIn(result, value))\n              : copySymbols(value, baseAssign(result, value));\n          }\n        } else {\n          if (!cloneableTags[tag]) {\n            return object ? value : {};\n          }\n          result = initCloneByTag(value, tag, isDeep);\n        }\n      }\n      // Check for circular references and return its corresponding clone.\n      stack || (stack = new Stack);\n      var stacked = stack.get(value);\n      if (stacked) {\n        return stacked;\n      }\n      stack.set(value, result);\n\n      if (isSet(value)) {\n        value.forEach(function(subValue) {\n          result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));\n        });\n      } else if (isMap(value)) {\n        value.forEach(function(subValue, key) {\n          result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));\n        });\n      }\n\n      var keysFunc = isFull\n        ? (isFlat ? getAllKeysIn : getAllKeys)\n        : (isFlat ? keysIn : keys);\n\n      var props = isArr ? undefined : keysFunc(value);\n      arrayEach(props || value, function(subValue, key) {\n        if (props) {\n          key = subValue;\n          subValue = value[key];\n        }\n        // Recursively populate clone (susceptible to call stack limits).\n        assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));\n      });\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.conforms` which doesn't clone `source`.\n     *\n     * @private\n     * @param {Object} source The object of property predicates to conform to.\n     * @returns {Function} Returns the new spec function.\n     */\n    function baseConforms(source) {\n      var props = keys(source);\n      return function(object) {\n        return baseConformsTo(object, source, props);\n      };\n    }\n\n    /**\n     * The base implementation of `_.conformsTo` which accepts `props` to check.\n     *\n     * @private\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property predicates to conform to.\n     * @returns {boolean} Returns `true` if `object` conforms, else `false`.\n     */\n    function baseConformsTo(object, source, props) {\n      var length = props.length;\n      if (object == null) {\n        return !length;\n      }\n      object = Object(object);\n      while (length--) {\n        var key = props[length],\n            predicate = source[key],\n            value = object[key];\n\n        if ((value === undefined && !(key in object)) || !predicate(value)) {\n          return false;\n        }\n      }\n      return true;\n    }\n\n    /**\n     * The base implementation of `_.delay` and `_.defer` which accepts `args`\n     * to provide to `func`.\n     *\n     * @private\n     * @param {Function} func The function to delay.\n     * @param {number} wait The number of milliseconds to delay invocation.\n     * @param {Array} args The arguments to provide to `func`.\n     * @returns {number|Object} Returns the timer id or timeout object.\n     */\n    function baseDelay(func, wait, args) {\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      return setTimeout(function() { func.apply(undefined, args); }, wait);\n    }\n\n    /**\n     * The base implementation of methods like `_.difference` without support\n     * for excluding multiple arrays or iteratee shorthands.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {Array} values The values to exclude.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     */\n    function baseDifference(array, values, iteratee, comparator) {\n      var index = -1,\n          includes = arrayIncludes,\n          isCommon = true,\n          length = array.length,\n          result = [],\n          valuesLength = values.length;\n\n      if (!length) {\n        return result;\n      }\n      if (iteratee) {\n        values = arrayMap(values, baseUnary(iteratee));\n      }\n      if (comparator) {\n        includes = arrayIncludesWith;\n        isCommon = false;\n      }\n      else if (values.length >= LARGE_ARRAY_SIZE) {\n        includes = cacheHas;\n        isCommon = false;\n        values = new SetCache(values);\n      }\n      outer:\n      while (++index < length) {\n        var value = array[index],\n            computed = iteratee == null ? value : iteratee(value);\n\n        value = (comparator || value !== 0) ? value : 0;\n        if (isCommon && computed === computed) {\n          var valuesIndex = valuesLength;\n          while (valuesIndex--) {\n            if (values[valuesIndex] === computed) {\n              continue outer;\n            }\n          }\n          result.push(value);\n        }\n        else if (!includes(values, computed, comparator)) {\n          result.push(value);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.forEach` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Array|Object} Returns `collection`.\n     */\n    var baseEach = createBaseEach(baseForOwn);\n\n    /**\n     * The base implementation of `_.forEachRight` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Array|Object} Returns `collection`.\n     */\n    var baseEachRight = createBaseEach(baseForOwnRight, true);\n\n    /**\n     * The base implementation of `_.every` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} predicate The function invoked per iteration.\n     * @returns {boolean} Returns `true` if all elements pass the predicate check,\n     *  else `false`\n     */\n    function baseEvery(collection, predicate) {\n      var result = true;\n      baseEach(collection, function(value, index, collection) {\n        result = !!predicate(value, index, collection);\n        return result;\n      });\n      return result;\n    }\n\n    /**\n     * The base implementation of methods like `_.max` and `_.min` which accepts a\n     * `comparator` to determine the extremum value.\n     *\n     * @private\n     * @param {Array} array The array to iterate over.\n     * @param {Function} iteratee The iteratee invoked per iteration.\n     * @param {Function} comparator The comparator used to compare values.\n     * @returns {*} Returns the extremum value.\n     */\n    function baseExtremum(array, iteratee, comparator) {\n      var index = -1,\n          length = array.length;\n\n      while (++index < length) {\n        var value = array[index],\n            current = iteratee(value);\n\n        if (current != null && (computed === undefined\n              ? (current === current && !isSymbol(current))\n              : comparator(current, computed)\n            )) {\n          var computed = current,\n              result = value;\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.fill` without an iteratee call guard.\n     *\n     * @private\n     * @param {Array} array The array to fill.\n     * @param {*} value The value to fill `array` with.\n     * @param {number} [start=0] The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns `array`.\n     */\n    function baseFill(array, value, start, end) {\n      var length = array.length;\n\n      start = toInteger(start);\n      if (start < 0) {\n        start = -start > length ? 0 : (length + start);\n      }\n      end = (end === undefined || end > length) ? length : toInteger(end);\n      if (end < 0) {\n        end += length;\n      }\n      end = start > end ? 0 : toLength(end);\n      while (start < end) {\n        array[start++] = value;\n      }\n      return array;\n    }\n\n    /**\n     * The base implementation of `_.filter` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} predicate The function invoked per iteration.\n     * @returns {Array} Returns the new filtered array.\n     */\n    function baseFilter(collection, predicate) {\n      var result = [];\n      baseEach(collection, function(value, index, collection) {\n        if (predicate(value, index, collection)) {\n          result.push(value);\n        }\n      });\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.flatten` with support for restricting flattening.\n     *\n     * @private\n     * @param {Array} array The array to flatten.\n     * @param {number} depth The maximum recursion depth.\n     * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.\n     * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.\n     * @param {Array} [result=[]] The initial result value.\n     * @returns {Array} Returns the new flattened array.\n     */\n    function baseFlatten(array, depth, predicate, isStrict, result) {\n      var index = -1,\n          length = array.length;\n\n      predicate || (predicate = isFlattenable);\n      result || (result = []);\n\n      while (++index < length) {\n        var value = array[index];\n        if (depth > 0 && predicate(value)) {\n          if (depth > 1) {\n            // Recursively flatten arrays (susceptible to call stack limits).\n            baseFlatten(value, depth - 1, predicate, isStrict, result);\n          } else {\n            arrayPush(result, value);\n          }\n        } else if (!isStrict) {\n          result[result.length] = value;\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `baseForOwn` which iterates over `object`\n     * properties returned by `keysFunc` and invokes `iteratee` for each property.\n     * Iteratee functions may exit iteration early by explicitly returning `false`.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @param {Function} keysFunc The function to get the keys of `object`.\n     * @returns {Object} Returns `object`.\n     */\n    var baseFor = createBaseFor();\n\n    /**\n     * This function is like `baseFor` except that it iterates over properties\n     * in the opposite order.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @param {Function} keysFunc The function to get the keys of `object`.\n     * @returns {Object} Returns `object`.\n     */\n    var baseForRight = createBaseFor(true);\n\n    /**\n     * The base implementation of `_.forOwn` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     */\n    function baseForOwn(object, iteratee) {\n      return object && baseFor(object, iteratee, keys);\n    }\n\n    /**\n     * The base implementation of `_.forOwnRight` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     */\n    function baseForOwnRight(object, iteratee) {\n      return object && baseForRight(object, iteratee, keys);\n    }\n\n    /**\n     * The base implementation of `_.functions` which creates an array of\n     * `object` function property names filtered from `props`.\n     *\n     * @private\n     * @param {Object} object The object to inspect.\n     * @param {Array} props The property names to filter.\n     * @returns {Array} Returns the function names.\n     */\n    function baseFunctions(object, props) {\n      return arrayFilter(props, function(key) {\n        return isFunction(object[key]);\n      });\n    }\n\n    /**\n     * The base implementation of `_.get` without support for default values.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the property to get.\n     * @returns {*} Returns the resolved value.\n     */\n    function baseGet(object, path) {\n      path = castPath(path, object);\n\n      var index = 0,\n          length = path.length;\n\n      while (object != null && index < length) {\n        object = object[toKey(path[index++])];\n      }\n      return (index && index == length) ? object : undefined;\n    }\n\n    /**\n     * The base implementation of `getAllKeys` and `getAllKeysIn` which uses\n     * `keysFunc` and `symbolsFunc` to get the enumerable property names and\n     * symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Function} keysFunc The function to get the keys of `object`.\n     * @param {Function} symbolsFunc The function to get the symbols of `object`.\n     * @returns {Array} Returns the array of property names and symbols.\n     */\n    function baseGetAllKeys(object, keysFunc, symbolsFunc) {\n      var result = keysFunc(object);\n      return isArray(object) ? result : arrayPush(result, symbolsFunc(object));\n    }\n\n    /**\n     * The base implementation of `getTag` without fallbacks for buggy environments.\n     *\n     * @private\n     * @param {*} value The value to query.\n     * @returns {string} Returns the `toStringTag`.\n     */\n    function baseGetTag(value) {\n      if (value == null) {\n        return value === undefined ? undefinedTag : nullTag;\n      }\n      return (symToStringTag && symToStringTag in Object(value))\n        ? getRawTag(value)\n        : objectToString(value);\n    }\n\n    /**\n     * The base implementation of `_.gt` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is greater than `other`,\n     *  else `false`.\n     */\n    function baseGt(value, other) {\n      return value > other;\n    }\n\n    /**\n     * The base implementation of `_.has` without support for deep paths.\n     *\n     * @private\n     * @param {Object} [object] The object to query.\n     * @param {Array|string} key The key to check.\n     * @returns {boolean} Returns `true` if `key` exists, else `false`.\n     */\n    function baseHas(object, key) {\n      return object != null && hasOwnProperty.call(object, key);\n    }\n\n    /**\n     * The base implementation of `_.hasIn` without support for deep paths.\n     *\n     * @private\n     * @param {Object} [object] The object to query.\n     * @param {Array|string} key The key to check.\n     * @returns {boolean} Returns `true` if `key` exists, else `false`.\n     */\n    function baseHasIn(object, key) {\n      return object != null && key in Object(object);\n    }\n\n    /**\n     * The base implementation of `_.inRange` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {number} number The number to check.\n     * @param {number} start The start of the range.\n     * @param {number} end The end of the range.\n     * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\n     */\n    function baseInRange(number, start, end) {\n      return number >= nativeMin(start, end) && number < nativeMax(start, end);\n    }\n\n    /**\n     * The base implementation of methods like `_.intersection`, without support\n     * for iteratee shorthands, that accepts an array of arrays to inspect.\n     *\n     * @private\n     * @param {Array} arrays The arrays to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of shared values.\n     */\n    function baseIntersection(arrays, iteratee, comparator) {\n      var includes = comparator ? arrayIncludesWith : arrayIncludes,\n          length = arrays[0].length,\n          othLength = arrays.length,\n          othIndex = othLength,\n          caches = Array(othLength),\n          maxLength = Infinity,\n          result = [];\n\n      while (othIndex--) {\n        var array = arrays[othIndex];\n        if (othIndex && iteratee) {\n          array = arrayMap(array, baseUnary(iteratee));\n        }\n        maxLength = nativeMin(array.length, maxLength);\n        caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))\n          ? new SetCache(othIndex && array)\n          : undefined;\n      }\n      array = arrays[0];\n\n      var index = -1,\n          seen = caches[0];\n\n      outer:\n      while (++index < length && result.length < maxLength) {\n        var value = array[index],\n            computed = iteratee ? iteratee(value) : value;\n\n        value = (comparator || value !== 0) ? value : 0;\n        if (!(seen\n              ? cacheHas(seen, computed)\n              : includes(result, computed, comparator)\n            )) {\n          othIndex = othLength;\n          while (--othIndex) {\n            var cache = caches[othIndex];\n            if (!(cache\n                  ? cacheHas(cache, computed)\n                  : includes(arrays[othIndex], computed, comparator))\n                ) {\n              continue outer;\n            }\n          }\n          if (seen) {\n            seen.push(computed);\n          }\n          result.push(value);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.invert` and `_.invertBy` which inverts\n     * `object` with values transformed by `iteratee` and set by `setter`.\n     *\n     * @private\n     * @param {Object} object The object to iterate over.\n     * @param {Function} setter The function to set `accumulator` values.\n     * @param {Function} iteratee The iteratee to transform values.\n     * @param {Object} accumulator The initial inverted object.\n     * @returns {Function} Returns `accumulator`.\n     */\n    function baseInverter(object, setter, iteratee, accumulator) {\n      baseForOwn(object, function(value, key, object) {\n        setter(accumulator, iteratee(value), key, object);\n      });\n      return accumulator;\n    }\n\n    /**\n     * The base implementation of `_.invoke` without support for individual\n     * method arguments.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the method to invoke.\n     * @param {Array} args The arguments to invoke the method with.\n     * @returns {*} Returns the result of the invoked method.\n     */\n    function baseInvoke(object, path, args) {\n      path = castPath(path, object);\n      object = parent(object, path);\n      var func = object == null ? object : object[toKey(last(path))];\n      return func == null ? undefined : apply(func, object, args);\n    }\n\n    /**\n     * The base implementation of `_.isArguments`.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n     */\n    function baseIsArguments(value) {\n      return isObjectLike(value) && baseGetTag(value) == argsTag;\n    }\n\n    /**\n     * The base implementation of `_.isArrayBuffer` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\n     */\n    function baseIsArrayBuffer(value) {\n      return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;\n    }\n\n    /**\n     * The base implementation of `_.isDate` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\n     */\n    function baseIsDate(value) {\n      return isObjectLike(value) && baseGetTag(value) == dateTag;\n    }\n\n    /**\n     * The base implementation of `_.isEqual` which supports partial comparisons\n     * and tracks traversed objects.\n     *\n     * @private\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @param {boolean} bitmask The bitmask flags.\n     *  1 - Unordered comparison\n     *  2 - Partial comparison\n     * @param {Function} [customizer] The function to customize comparisons.\n     * @param {Object} [stack] Tracks traversed `value` and `other` objects.\n     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n     */\n    function baseIsEqual(value, other, bitmask, customizer, stack) {\n      if (value === other) {\n        return true;\n      }\n      if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {\n        return value !== value && other !== other;\n      }\n      return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);\n    }\n\n    /**\n     * A specialized version of `baseIsEqual` for arrays and objects which performs\n     * deep comparisons and tracks traversed objects enabling objects with circular\n     * references to be compared.\n     *\n     * @private\n     * @param {Object} object The object to compare.\n     * @param {Object} other The other object to compare.\n     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n     * @param {Function} customizer The function to customize comparisons.\n     * @param {Function} equalFunc The function to determine equivalents of values.\n     * @param {Object} [stack] Tracks traversed `object` and `other` objects.\n     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n     */\n    function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {\n      var objIsArr = isArray(object),\n          othIsArr = isArray(other),\n          objTag = objIsArr ? arrayTag : getTag(object),\n          othTag = othIsArr ? arrayTag : getTag(other);\n\n      objTag = objTag == argsTag ? objectTag : objTag;\n      othTag = othTag == argsTag ? objectTag : othTag;\n\n      var objIsObj = objTag == objectTag,\n          othIsObj = othTag == objectTag,\n          isSameTag = objTag == othTag;\n\n      if (isSameTag && isBuffer(object)) {\n        if (!isBuffer(other)) {\n          return false;\n        }\n        objIsArr = true;\n        objIsObj = false;\n      }\n      if (isSameTag && !objIsObj) {\n        stack || (stack = new Stack);\n        return (objIsArr || isTypedArray(object))\n          ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)\n          : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);\n      }\n      if (!(bitmask & COMPARE_PARTIAL_FLAG)) {\n        var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),\n            othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');\n\n        if (objIsWrapped || othIsWrapped) {\n          var objUnwrapped = objIsWrapped ? object.value() : object,\n              othUnwrapped = othIsWrapped ? other.value() : other;\n\n          stack || (stack = new Stack);\n          return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);\n        }\n      }\n      if (!isSameTag) {\n        return false;\n      }\n      stack || (stack = new Stack);\n      return equalObjects(object, other, bitmask, customizer, equalFunc, stack);\n    }\n\n    /**\n     * The base implementation of `_.isMap` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n     */\n    function baseIsMap(value) {\n      return isObjectLike(value) && getTag(value) == mapTag;\n    }\n\n    /**\n     * The base implementation of `_.isMatch` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property values to match.\n     * @param {Array} matchData The property names, values, and compare flags to match.\n     * @param {Function} [customizer] The function to customize comparisons.\n     * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n     */\n    function baseIsMatch(object, source, matchData, customizer) {\n      var index = matchData.length,\n          length = index,\n          noCustomizer = !customizer;\n\n      if (object == null) {\n        return !length;\n      }\n      object = Object(object);\n      while (index--) {\n        var data = matchData[index];\n        if ((noCustomizer && data[2])\n              ? data[1] !== object[data[0]]\n              : !(data[0] in object)\n            ) {\n          return false;\n        }\n      }\n      while (++index < length) {\n        data = matchData[index];\n        var key = data[0],\n            objValue = object[key],\n            srcValue = data[1];\n\n        if (noCustomizer && data[2]) {\n          if (objValue === undefined && !(key in object)) {\n            return false;\n          }\n        } else {\n          var stack = new Stack;\n          if (customizer) {\n            var result = customizer(objValue, srcValue, key, object, source, stack);\n          }\n          if (!(result === undefined\n                ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)\n                : result\n              )) {\n            return false;\n          }\n        }\n      }\n      return true;\n    }\n\n    /**\n     * The base implementation of `_.isNative` without bad shim checks.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a native function,\n     *  else `false`.\n     */\n    function baseIsNative(value) {\n      if (!isObject(value) || isMasked(value)) {\n        return false;\n      }\n      var pattern = isFunction(value) ? reIsNative : reIsHostCtor;\n      return pattern.test(toSource(value));\n    }\n\n    /**\n     * The base implementation of `_.isRegExp` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\n     */\n    function baseIsRegExp(value) {\n      return isObjectLike(value) && baseGetTag(value) == regexpTag;\n    }\n\n    /**\n     * The base implementation of `_.isSet` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n     */\n    function baseIsSet(value) {\n      return isObjectLike(value) && getTag(value) == setTag;\n    }\n\n    /**\n     * The base implementation of `_.isTypedArray` without Node.js optimizations.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n     */\n    function baseIsTypedArray(value) {\n      return isObjectLike(value) &&\n        isLength(value.length) && !!typedArrayTags[baseGetTag(value)];\n    }\n\n    /**\n     * The base implementation of `_.iteratee`.\n     *\n     * @private\n     * @param {*} [value=_.identity] The value to convert to an iteratee.\n     * @returns {Function} Returns the iteratee.\n     */\n    function baseIteratee(value) {\n      // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.\n      // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.\n      if (typeof value == 'function') {\n        return value;\n      }\n      if (value == null) {\n        return identity;\n      }\n      if (typeof value == 'object') {\n        return isArray(value)\n          ? baseMatchesProperty(value[0], value[1])\n          : baseMatches(value);\n      }\n      return property(value);\n    }\n\n    /**\n     * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     */\n    function baseKeys(object) {\n      if (!isPrototype(object)) {\n        return nativeKeys(object);\n      }\n      var result = [];\n      for (var key in Object(object)) {\n        if (hasOwnProperty.call(object, key) && key != 'constructor') {\n          result.push(key);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     */\n    function baseKeysIn(object) {\n      if (!isObject(object)) {\n        return nativeKeysIn(object);\n      }\n      var isProto = isPrototype(object),\n          result = [];\n\n      for (var key in object) {\n        if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {\n          result.push(key);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.lt` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is less than `other`,\n     *  else `false`.\n     */\n    function baseLt(value, other) {\n      return value < other;\n    }\n\n    /**\n     * The base implementation of `_.map` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} iteratee The function invoked per iteration.\n     * @returns {Array} Returns the new mapped array.\n     */\n    function baseMap(collection, iteratee) {\n      var index = -1,\n          result = isArrayLike(collection) ? Array(collection.length) : [];\n\n      baseEach(collection, function(value, key, collection) {\n        result[++index] = iteratee(value, key, collection);\n      });\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.matches` which doesn't clone `source`.\n     *\n     * @private\n     * @param {Object} source The object of property values to match.\n     * @returns {Function} Returns the new spec function.\n     */\n    function baseMatches(source) {\n      var matchData = getMatchData(source);\n      if (matchData.length == 1 && matchData[0][2]) {\n        return matchesStrictComparable(matchData[0][0], matchData[0][1]);\n      }\n      return function(object) {\n        return object === source || baseIsMatch(object, source, matchData);\n      };\n    }\n\n    /**\n     * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.\n     *\n     * @private\n     * @param {string} path The path of the property to get.\n     * @param {*} srcValue The value to match.\n     * @returns {Function} Returns the new spec function.\n     */\n    function baseMatchesProperty(path, srcValue) {\n      if (isKey(path) && isStrictComparable(srcValue)) {\n        return matchesStrictComparable(toKey(path), srcValue);\n      }\n      return function(object) {\n        var objValue = get(object, path);\n        return (objValue === undefined && objValue === srcValue)\n          ? hasIn(object, path)\n          : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);\n      };\n    }\n\n    /**\n     * The base implementation of `_.merge` without support for multiple sources.\n     *\n     * @private\n     * @param {Object} object The destination object.\n     * @param {Object} source The source object.\n     * @param {number} srcIndex The index of `source`.\n     * @param {Function} [customizer] The function to customize merged values.\n     * @param {Object} [stack] Tracks traversed source values and their merged\n     *  counterparts.\n     */\n    function baseMerge(object, source, srcIndex, customizer, stack) {\n      if (object === source) {\n        return;\n      }\n      baseFor(source, function(srcValue, key) {\n        stack || (stack = new Stack);\n        if (isObject(srcValue)) {\n          baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);\n        }\n        else {\n          var newValue = customizer\n            ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)\n            : undefined;\n\n          if (newValue === undefined) {\n            newValue = srcValue;\n          }\n          assignMergeValue(object, key, newValue);\n        }\n      }, keysIn);\n    }\n\n    /**\n     * A specialized version of `baseMerge` for arrays and objects which performs\n     * deep merges and tracks traversed objects enabling objects with circular\n     * references to be merged.\n     *\n     * @private\n     * @param {Object} object The destination object.\n     * @param {Object} source The source object.\n     * @param {string} key The key of the value to merge.\n     * @param {number} srcIndex The index of `source`.\n     * @param {Function} mergeFunc The function to merge values.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @param {Object} [stack] Tracks traversed source values and their merged\n     *  counterparts.\n     */\n    function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {\n      var objValue = safeGet(object, key),\n          srcValue = safeGet(source, key),\n          stacked = stack.get(srcValue);\n\n      if (stacked) {\n        assignMergeValue(object, key, stacked);\n        return;\n      }\n      var newValue = customizer\n        ? customizer(objValue, srcValue, (key + ''), object, source, stack)\n        : undefined;\n\n      var isCommon = newValue === undefined;\n\n      if (isCommon) {\n        var isArr = isArray(srcValue),\n            isBuff = !isArr && isBuffer(srcValue),\n            isTyped = !isArr && !isBuff && isTypedArray(srcValue);\n\n        newValue = srcValue;\n        if (isArr || isBuff || isTyped) {\n          if (isArray(objValue)) {\n            newValue = objValue;\n          }\n          else if (isArrayLikeObject(objValue)) {\n            newValue = copyArray(objValue);\n          }\n          else if (isBuff) {\n            isCommon = false;\n            newValue = cloneBuffer(srcValue, true);\n          }\n          else if (isTyped) {\n            isCommon = false;\n            newValue = cloneTypedArray(srcValue, true);\n          }\n          else {\n            newValue = [];\n          }\n        }\n        else if (isPlainObject(srcValue) || isArguments(srcValue)) {\n          newValue = objValue;\n          if (isArguments(objValue)) {\n            newValue = toPlainObject(objValue);\n          }\n          else if (!isObject(objValue) || isFunction(objValue)) {\n            newValue = initCloneObject(srcValue);\n          }\n        }\n        else {\n          isCommon = false;\n        }\n      }\n      if (isCommon) {\n        // Recursively merge objects and arrays (susceptible to call stack limits).\n        stack.set(srcValue, newValue);\n        mergeFunc(newValue, srcValue, srcIndex, customizer, stack);\n        stack['delete'](srcValue);\n      }\n      assignMergeValue(object, key, newValue);\n    }\n\n    /**\n     * The base implementation of `_.nth` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {Array} array The array to query.\n     * @param {number} n The index of the element to return.\n     * @returns {*} Returns the nth element of `array`.\n     */\n    function baseNth(array, n) {\n      var length = array.length;\n      if (!length) {\n        return;\n      }\n      n += n < 0 ? length : 0;\n      return isIndex(n, length) ? array[n] : undefined;\n    }\n\n    /**\n     * The base implementation of `_.orderBy` without param guards.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.\n     * @param {string[]} orders The sort orders of `iteratees`.\n     * @returns {Array} Returns the new sorted array.\n     */\n    function baseOrderBy(collection, iteratees, orders) {\n      var index = -1;\n      iteratees = arrayMap(iteratees.length ? iteratees : [identity], baseUnary(getIteratee()));\n\n      var result = baseMap(collection, function(value, key, collection) {\n        var criteria = arrayMap(iteratees, function(iteratee) {\n          return iteratee(value);\n        });\n        return { 'criteria': criteria, 'index': ++index, 'value': value };\n      });\n\n      return baseSortBy(result, function(object, other) {\n        return compareMultiple(object, other, orders);\n      });\n    }\n\n    /**\n     * The base implementation of `_.pick` without support for individual\n     * property identifiers.\n     *\n     * @private\n     * @param {Object} object The source object.\n     * @param {string[]} paths The property paths to pick.\n     * @returns {Object} Returns the new object.\n     */\n    function basePick(object, paths) {\n      return basePickBy(object, paths, function(value, path) {\n        return hasIn(object, path);\n      });\n    }\n\n    /**\n     * The base implementation of  `_.pickBy` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Object} object The source object.\n     * @param {string[]} paths The property paths to pick.\n     * @param {Function} predicate The function invoked per property.\n     * @returns {Object} Returns the new object.\n     */\n    function basePickBy(object, paths, predicate) {\n      var index = -1,\n          length = paths.length,\n          result = {};\n\n      while (++index < length) {\n        var path = paths[index],\n            value = baseGet(object, path);\n\n        if (predicate(value, path)) {\n          baseSet(result, castPath(path, object), value);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * A specialized version of `baseProperty` which supports deep paths.\n     *\n     * @private\n     * @param {Array|string} path The path of the property to get.\n     * @returns {Function} Returns the new accessor function.\n     */\n    function basePropertyDeep(path) {\n      return function(object) {\n        return baseGet(object, path);\n      };\n    }\n\n    /**\n     * The base implementation of `_.pullAllBy` without support for iteratee\n     * shorthands.\n     *\n     * @private\n     * @param {Array} array The array to modify.\n     * @param {Array} values The values to remove.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns `array`.\n     */\n    function basePullAll(array, values, iteratee, comparator) {\n      var indexOf = comparator ? baseIndexOfWith : baseIndexOf,\n          index = -1,\n          length = values.length,\n          seen = array;\n\n      if (array === values) {\n        values = copyArray(values);\n      }\n      if (iteratee) {\n        seen = arrayMap(array, baseUnary(iteratee));\n      }\n      while (++index < length) {\n        var fromIndex = 0,\n            value = values[index],\n            computed = iteratee ? iteratee(value) : value;\n\n        while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {\n          if (seen !== array) {\n            splice.call(seen, fromIndex, 1);\n          }\n          splice.call(array, fromIndex, 1);\n        }\n      }\n      return array;\n    }\n\n    /**\n     * The base implementation of `_.pullAt` without support for individual\n     * indexes or capturing the removed elements.\n     *\n     * @private\n     * @param {Array} array The array to modify.\n     * @param {number[]} indexes The indexes of elements to remove.\n     * @returns {Array} Returns `array`.\n     */\n    function basePullAt(array, indexes) {\n      var length = array ? indexes.length : 0,\n          lastIndex = length - 1;\n\n      while (length--) {\n        var index = indexes[length];\n        if (length == lastIndex || index !== previous) {\n          var previous = index;\n          if (isIndex(index)) {\n            splice.call(array, index, 1);\n          } else {\n            baseUnset(array, index);\n          }\n        }\n      }\n      return array;\n    }\n\n    /**\n     * The base implementation of `_.random` without support for returning\n     * floating-point numbers.\n     *\n     * @private\n     * @param {number} lower The lower bound.\n     * @param {number} upper The upper bound.\n     * @returns {number} Returns the random number.\n     */\n    function baseRandom(lower, upper) {\n      return lower + nativeFloor(nativeRandom() * (upper - lower + 1));\n    }\n\n    /**\n     * The base implementation of `_.range` and `_.rangeRight` which doesn't\n     * coerce arguments.\n     *\n     * @private\n     * @param {number} start The start of the range.\n     * @param {number} end The end of the range.\n     * @param {number} step The value to increment or decrement by.\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Array} Returns the range of numbers.\n     */\n    function baseRange(start, end, step, fromRight) {\n      var index = -1,\n          length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),\n          result = Array(length);\n\n      while (length--) {\n        result[fromRight ? length : ++index] = start;\n        start += step;\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.repeat` which doesn't coerce arguments.\n     *\n     * @private\n     * @param {string} string The string to repeat.\n     * @param {number} n The number of times to repeat the string.\n     * @returns {string} Returns the repeated string.\n     */\n    function baseRepeat(string, n) {\n      var result = '';\n      if (!string || n < 1 || n > MAX_SAFE_INTEGER) {\n        return result;\n      }\n      // Leverage the exponentiation by squaring algorithm for a faster repeat.\n      // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.\n      do {\n        if (n % 2) {\n          result += string;\n        }\n        n = nativeFloor(n / 2);\n        if (n) {\n          string += string;\n        }\n      } while (n);\n\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.rest` which doesn't validate or coerce arguments.\n     *\n     * @private\n     * @param {Function} func The function to apply a rest parameter to.\n     * @param {number} [start=func.length-1] The start position of the rest parameter.\n     * @returns {Function} Returns the new function.\n     */\n    function baseRest(func, start) {\n      return setToString(overRest(func, start, identity), func + '');\n    }\n\n    /**\n     * The base implementation of `_.sample`.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to sample.\n     * @returns {*} Returns the random element.\n     */\n    function baseSample(collection) {\n      return arraySample(values(collection));\n    }\n\n    /**\n     * The base implementation of `_.sampleSize` without param guards.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to sample.\n     * @param {number} n The number of elements to sample.\n     * @returns {Array} Returns the random elements.\n     */\n    function baseSampleSize(collection, n) {\n      var array = values(collection);\n      return shuffleSelf(array, baseClamp(n, 0, array.length));\n    }\n\n    /**\n     * The base implementation of `_.set`.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {*} value The value to set.\n     * @param {Function} [customizer] The function to customize path creation.\n     * @returns {Object} Returns `object`.\n     */\n    function baseSet(object, path, value, customizer) {\n      if (!isObject(object)) {\n        return object;\n      }\n      path = castPath(path, object);\n\n      var index = -1,\n          length = path.length,\n          lastIndex = length - 1,\n          nested = object;\n\n      while (nested != null && ++index < length) {\n        var key = toKey(path[index]),\n            newValue = value;\n\n        if (index != lastIndex) {\n          var objValue = nested[key];\n          newValue = customizer ? customizer(objValue, key, nested) : undefined;\n          if (newValue === undefined) {\n            newValue = isObject(objValue)\n              ? objValue\n              : (isIndex(path[index + 1]) ? [] : {});\n          }\n        }\n        assignValue(nested, key, newValue);\n        nested = nested[key];\n      }\n      return object;\n    }\n\n    /**\n     * The base implementation of `setData` without support for hot loop shorting.\n     *\n     * @private\n     * @param {Function} func The function to associate metadata with.\n     * @param {*} data The metadata.\n     * @returns {Function} Returns `func`.\n     */\n    var baseSetData = !metaMap ? identity : function(func, data) {\n      metaMap.set(func, data);\n      return func;\n    };\n\n    /**\n     * The base implementation of `setToString` without support for hot loop shorting.\n     *\n     * @private\n     * @param {Function} func The function to modify.\n     * @param {Function} string The `toString` result.\n     * @returns {Function} Returns `func`.\n     */\n    var baseSetToString = !defineProperty ? identity : function(func, string) {\n      return defineProperty(func, 'toString', {\n        'configurable': true,\n        'enumerable': false,\n        'value': constant(string),\n        'writable': true\n      });\n    };\n\n    /**\n     * The base implementation of `_.shuffle`.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to shuffle.\n     * @returns {Array} Returns the new shuffled array.\n     */\n    function baseShuffle(collection) {\n      return shuffleSelf(values(collection));\n    }\n\n    /**\n     * The base implementation of `_.slice` without an iteratee call guard.\n     *\n     * @private\n     * @param {Array} array The array to slice.\n     * @param {number} [start=0] The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns the slice of `array`.\n     */\n    function baseSlice(array, start, end) {\n      var index = -1,\n          length = array.length;\n\n      if (start < 0) {\n        start = -start > length ? 0 : (length + start);\n      }\n      end = end > length ? length : end;\n      if (end < 0) {\n        end += length;\n      }\n      length = start > end ? 0 : ((end - start) >>> 0);\n      start >>>= 0;\n\n      var result = Array(length);\n      while (++index < length) {\n        result[index] = array[index + start];\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.some` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} predicate The function invoked per iteration.\n     * @returns {boolean} Returns `true` if any element passes the predicate check,\n     *  else `false`.\n     */\n    function baseSome(collection, predicate) {\n      var result;\n\n      baseEach(collection, function(value, index, collection) {\n        result = predicate(value, index, collection);\n        return !result;\n      });\n      return !!result;\n    }\n\n    /**\n     * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which\n     * performs a binary search of `array` to determine the index at which `value`\n     * should be inserted into `array` in order to maintain its sort order.\n     *\n     * @private\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @param {boolean} [retHighest] Specify returning the highest qualified index.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     */\n    function baseSortedIndex(array, value, retHighest) {\n      var low = 0,\n          high = array == null ? low : array.length;\n\n      if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {\n        while (low < high) {\n          var mid = (low + high) >>> 1,\n              computed = array[mid];\n\n          if (computed !== null && !isSymbol(computed) &&\n              (retHighest ? (computed <= value) : (computed < value))) {\n            low = mid + 1;\n          } else {\n            high = mid;\n          }\n        }\n        return high;\n      }\n      return baseSortedIndexBy(array, value, identity, retHighest);\n    }\n\n    /**\n     * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`\n     * which invokes `iteratee` for `value` and each element of `array` to compute\n     * their sort ranking. The iteratee is invoked with one argument; (value).\n     *\n     * @private\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @param {Function} iteratee The iteratee invoked per element.\n     * @param {boolean} [retHighest] Specify returning the highest qualified index.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     */\n    function baseSortedIndexBy(array, value, iteratee, retHighest) {\n      value = iteratee(value);\n\n      var low = 0,\n          high = array == null ? 0 : array.length,\n          valIsNaN = value !== value,\n          valIsNull = value === null,\n          valIsSymbol = isSymbol(value),\n          valIsUndefined = value === undefined;\n\n      while (low < high) {\n        var mid = nativeFloor((low + high) / 2),\n            computed = iteratee(array[mid]),\n            othIsDefined = computed !== undefined,\n            othIsNull = computed === null,\n            othIsReflexive = computed === computed,\n            othIsSymbol = isSymbol(computed);\n\n        if (valIsNaN) {\n          var setLow = retHighest || othIsReflexive;\n        } else if (valIsUndefined) {\n          setLow = othIsReflexive && (retHighest || othIsDefined);\n        } else if (valIsNull) {\n          setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);\n        } else if (valIsSymbol) {\n          setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);\n        } else if (othIsNull || othIsSymbol) {\n          setLow = false;\n        } else {\n          setLow = retHighest ? (computed <= value) : (computed < value);\n        }\n        if (setLow) {\n          low = mid + 1;\n        } else {\n          high = mid;\n        }\n      }\n      return nativeMin(high, MAX_ARRAY_INDEX);\n    }\n\n    /**\n     * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without\n     * support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     */\n    function baseSortedUniq(array, iteratee) {\n      var index = -1,\n          length = array.length,\n          resIndex = 0,\n          result = [];\n\n      while (++index < length) {\n        var value = array[index],\n            computed = iteratee ? iteratee(value) : value;\n\n        if (!index || !eq(computed, seen)) {\n          var seen = computed;\n          result[resIndex++] = value === 0 ? 0 : value;\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.toNumber` which doesn't ensure correct\n     * conversions of binary, hexadecimal, or octal string values.\n     *\n     * @private\n     * @param {*} value The value to process.\n     * @returns {number} Returns the number.\n     */\n    function baseToNumber(value) {\n      if (typeof value == 'number') {\n        return value;\n      }\n      if (isSymbol(value)) {\n        return NAN;\n      }\n      return +value;\n    }\n\n    /**\n     * The base implementation of `_.toString` which doesn't convert nullish\n     * values to empty strings.\n     *\n     * @private\n     * @param {*} value The value to process.\n     * @returns {string} Returns the string.\n     */\n    function baseToString(value) {\n      // Exit early for strings to avoid a performance hit in some environments.\n      if (typeof value == 'string') {\n        return value;\n      }\n      if (isArray(value)) {\n        // Recursively convert values (susceptible to call stack limits).\n        return arrayMap(value, baseToString) + '';\n      }\n      if (isSymbol(value)) {\n        return symbolToString ? symbolToString.call(value) : '';\n      }\n      var result = (value + '');\n      return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n    }\n\n    /**\n     * The base implementation of `_.uniqBy` without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     */\n    function baseUniq(array, iteratee, comparator) {\n      var index = -1,\n          includes = arrayIncludes,\n          length = array.length,\n          isCommon = true,\n          result = [],\n          seen = result;\n\n      if (comparator) {\n        isCommon = false;\n        includes = arrayIncludesWith;\n      }\n      else if (length >= LARGE_ARRAY_SIZE) {\n        var set = iteratee ? null : createSet(array);\n        if (set) {\n          return setToArray(set);\n        }\n        isCommon = false;\n        includes = cacheHas;\n        seen = new SetCache;\n      }\n      else {\n        seen = iteratee ? [] : result;\n      }\n      outer:\n      while (++index < length) {\n        var value = array[index],\n            computed = iteratee ? iteratee(value) : value;\n\n        value = (comparator || value !== 0) ? value : 0;\n        if (isCommon && computed === computed) {\n          var seenIndex = seen.length;\n          while (seenIndex--) {\n            if (seen[seenIndex] === computed) {\n              continue outer;\n            }\n          }\n          if (iteratee) {\n            seen.push(computed);\n          }\n          result.push(value);\n        }\n        else if (!includes(seen, computed, comparator)) {\n          if (seen !== result) {\n            seen.push(computed);\n          }\n          result.push(value);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * The base implementation of `_.unset`.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The property path to unset.\n     * @returns {boolean} Returns `true` if the property is deleted, else `false`.\n     */\n    function baseUnset(object, path) {\n      path = castPath(path, object);\n      object = parent(object, path);\n      return object == null || delete object[toKey(last(path))];\n    }\n\n    /**\n     * The base implementation of `_.update`.\n     *\n     * @private\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to update.\n     * @param {Function} updater The function to produce the updated value.\n     * @param {Function} [customizer] The function to customize path creation.\n     * @returns {Object} Returns `object`.\n     */\n    function baseUpdate(object, path, updater, customizer) {\n      return baseSet(object, path, updater(baseGet(object, path)), customizer);\n    }\n\n    /**\n     * The base implementation of methods like `_.dropWhile` and `_.takeWhile`\n     * without support for iteratee shorthands.\n     *\n     * @private\n     * @param {Array} array The array to query.\n     * @param {Function} predicate The function invoked per iteration.\n     * @param {boolean} [isDrop] Specify dropping elements instead of taking them.\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Array} Returns the slice of `array`.\n     */\n    function baseWhile(array, predicate, isDrop, fromRight) {\n      var length = array.length,\n          index = fromRight ? length : -1;\n\n      while ((fromRight ? index-- : ++index < length) &&\n        predicate(array[index], index, array)) {}\n\n      return isDrop\n        ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))\n        : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));\n    }\n\n    /**\n     * The base implementation of `wrapperValue` which returns the result of\n     * performing a sequence of actions on the unwrapped `value`, where each\n     * successive action is supplied the return value of the previous.\n     *\n     * @private\n     * @param {*} value The unwrapped value.\n     * @param {Array} actions Actions to perform to resolve the unwrapped value.\n     * @returns {*} Returns the resolved value.\n     */\n    function baseWrapperValue(value, actions) {\n      var result = value;\n      if (result instanceof LazyWrapper) {\n        result = result.value();\n      }\n      return arrayReduce(actions, function(result, action) {\n        return action.func.apply(action.thisArg, arrayPush([result], action.args));\n      }, result);\n    }\n\n    /**\n     * The base implementation of methods like `_.xor`, without support for\n     * iteratee shorthands, that accepts an array of arrays to inspect.\n     *\n     * @private\n     * @param {Array} arrays The arrays to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of values.\n     */\n    function baseXor(arrays, iteratee, comparator) {\n      var length = arrays.length;\n      if (length < 2) {\n        return length ? baseUniq(arrays[0]) : [];\n      }\n      var index = -1,\n          result = Array(length);\n\n      while (++index < length) {\n        var array = arrays[index],\n            othIndex = -1;\n\n        while (++othIndex < length) {\n          if (othIndex != index) {\n            result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);\n          }\n        }\n      }\n      return baseUniq(baseFlatten(result, 1), iteratee, comparator);\n    }\n\n    /**\n     * This base implementation of `_.zipObject` which assigns values using `assignFunc`.\n     *\n     * @private\n     * @param {Array} props The property identifiers.\n     * @param {Array} values The property values.\n     * @param {Function} assignFunc The function to assign values.\n     * @returns {Object} Returns the new object.\n     */\n    function baseZipObject(props, values, assignFunc) {\n      var index = -1,\n          length = props.length,\n          valsLength = values.length,\n          result = {};\n\n      while (++index < length) {\n        var value = index < valsLength ? values[index] : undefined;\n        assignFunc(result, props[index], value);\n      }\n      return result;\n    }\n\n    /**\n     * Casts `value` to an empty array if it's not an array like object.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @returns {Array|Object} Returns the cast array-like object.\n     */\n    function castArrayLikeObject(value) {\n      return isArrayLikeObject(value) ? value : [];\n    }\n\n    /**\n     * Casts `value` to `identity` if it's not a function.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @returns {Function} Returns cast function.\n     */\n    function castFunction(value) {\n      return typeof value == 'function' ? value : identity;\n    }\n\n    /**\n     * Casts `value` to a path array if it's not one.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @param {Object} [object] The object to query keys on.\n     * @returns {Array} Returns the cast property path array.\n     */\n    function castPath(value, object) {\n      if (isArray(value)) {\n        return value;\n      }\n      return isKey(value, object) ? [value] : stringToPath(toString(value));\n    }\n\n    /**\n     * A `baseRest` alias which can be replaced with `identity` by module\n     * replacement plugins.\n     *\n     * @private\n     * @type {Function}\n     * @param {Function} func The function to apply a rest parameter to.\n     * @returns {Function} Returns the new function.\n     */\n    var castRest = baseRest;\n\n    /**\n     * Casts `array` to a slice if it's needed.\n     *\n     * @private\n     * @param {Array} array The array to inspect.\n     * @param {number} start The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns the cast slice.\n     */\n    function castSlice(array, start, end) {\n      var length = array.length;\n      end = end === undefined ? length : end;\n      return (!start && end >= length) ? array : baseSlice(array, start, end);\n    }\n\n    /**\n     * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).\n     *\n     * @private\n     * @param {number|Object} id The timer id or timeout object of the timer to clear.\n     */\n    var clearTimeout = ctxClearTimeout || function(id) {\n      return root.clearTimeout(id);\n    };\n\n    /**\n     * Creates a clone of  `buffer`.\n     *\n     * @private\n     * @param {Buffer} buffer The buffer to clone.\n     * @param {boolean} [isDeep] Specify a deep clone.\n     * @returns {Buffer} Returns the cloned buffer.\n     */\n    function cloneBuffer(buffer, isDeep) {\n      if (isDeep) {\n        return buffer.slice();\n      }\n      var length = buffer.length,\n          result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);\n\n      buffer.copy(result);\n      return result;\n    }\n\n    /**\n     * Creates a clone of `arrayBuffer`.\n     *\n     * @private\n     * @param {ArrayBuffer} arrayBuffer The array buffer to clone.\n     * @returns {ArrayBuffer} Returns the cloned array buffer.\n     */\n    function cloneArrayBuffer(arrayBuffer) {\n      var result = new arrayBuffer.constructor(arrayBuffer.byteLength);\n      new Uint8Array(result).set(new Uint8Array(arrayBuffer));\n      return result;\n    }\n\n    /**\n     * Creates a clone of `dataView`.\n     *\n     * @private\n     * @param {Object} dataView The data view to clone.\n     * @param {boolean} [isDeep] Specify a deep clone.\n     * @returns {Object} Returns the cloned data view.\n     */\n    function cloneDataView(dataView, isDeep) {\n      var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;\n      return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);\n    }\n\n    /**\n     * Creates a clone of `regexp`.\n     *\n     * @private\n     * @param {Object} regexp The regexp to clone.\n     * @returns {Object} Returns the cloned regexp.\n     */\n    function cloneRegExp(regexp) {\n      var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));\n      result.lastIndex = regexp.lastIndex;\n      return result;\n    }\n\n    /**\n     * Creates a clone of the `symbol` object.\n     *\n     * @private\n     * @param {Object} symbol The symbol object to clone.\n     * @returns {Object} Returns the cloned symbol object.\n     */\n    function cloneSymbol(symbol) {\n      return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};\n    }\n\n    /**\n     * Creates a clone of `typedArray`.\n     *\n     * @private\n     * @param {Object} typedArray The typed array to clone.\n     * @param {boolean} [isDeep] Specify a deep clone.\n     * @returns {Object} Returns the cloned typed array.\n     */\n    function cloneTypedArray(typedArray, isDeep) {\n      var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;\n      return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);\n    }\n\n    /**\n     * Compares values to sort them in ascending order.\n     *\n     * @private\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {number} Returns the sort order indicator for `value`.\n     */\n    function compareAscending(value, other) {\n      if (value !== other) {\n        var valIsDefined = value !== undefined,\n            valIsNull = value === null,\n            valIsReflexive = value === value,\n            valIsSymbol = isSymbol(value);\n\n        var othIsDefined = other !== undefined,\n            othIsNull = other === null,\n            othIsReflexive = other === other,\n            othIsSymbol = isSymbol(other);\n\n        if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||\n            (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||\n            (valIsNull && othIsDefined && othIsReflexive) ||\n            (!valIsDefined && othIsReflexive) ||\n            !valIsReflexive) {\n          return 1;\n        }\n        if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||\n            (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||\n            (othIsNull && valIsDefined && valIsReflexive) ||\n            (!othIsDefined && valIsReflexive) ||\n            !othIsReflexive) {\n          return -1;\n        }\n      }\n      return 0;\n    }\n\n    /**\n     * Used by `_.orderBy` to compare multiple properties of a value to another\n     * and stable sort them.\n     *\n     * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,\n     * specify an order of \"desc\" for descending or \"asc\" for ascending sort order\n     * of corresponding values.\n     *\n     * @private\n     * @param {Object} object The object to compare.\n     * @param {Object} other The other object to compare.\n     * @param {boolean[]|string[]} orders The order to sort by for each property.\n     * @returns {number} Returns the sort order indicator for `object`.\n     */\n    function compareMultiple(object, other, orders) {\n      var index = -1,\n          objCriteria = object.criteria,\n          othCriteria = other.criteria,\n          length = objCriteria.length,\n          ordersLength = orders.length;\n\n      while (++index < length) {\n        var result = compareAscending(objCriteria[index], othCriteria[index]);\n        if (result) {\n          if (index >= ordersLength) {\n            return result;\n          }\n          var order = orders[index];\n          return result * (order == 'desc' ? -1 : 1);\n        }\n      }\n      // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications\n      // that causes it, under certain circumstances, to provide the same value for\n      // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247\n      // for more details.\n      //\n      // This also ensures a stable sort in V8 and other engines.\n      // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.\n      return object.index - other.index;\n    }\n\n    /**\n     * Creates an array that is the composition of partially applied arguments,\n     * placeholders, and provided arguments into a single array of arguments.\n     *\n     * @private\n     * @param {Array} args The provided arguments.\n     * @param {Array} partials The arguments to prepend to those provided.\n     * @param {Array} holders The `partials` placeholder indexes.\n     * @params {boolean} [isCurried] Specify composing for a curried function.\n     * @returns {Array} Returns the new array of composed arguments.\n     */\n    function composeArgs(args, partials, holders, isCurried) {\n      var argsIndex = -1,\n          argsLength = args.length,\n          holdersLength = holders.length,\n          leftIndex = -1,\n          leftLength = partials.length,\n          rangeLength = nativeMax(argsLength - holdersLength, 0),\n          result = Array(leftLength + rangeLength),\n          isUncurried = !isCurried;\n\n      while (++leftIndex < leftLength) {\n        result[leftIndex] = partials[leftIndex];\n      }\n      while (++argsIndex < holdersLength) {\n        if (isUncurried || argsIndex < argsLength) {\n          result[holders[argsIndex]] = args[argsIndex];\n        }\n      }\n      while (rangeLength--) {\n        result[leftIndex++] = args[argsIndex++];\n      }\n      return result;\n    }\n\n    /**\n     * This function is like `composeArgs` except that the arguments composition\n     * is tailored for `_.partialRight`.\n     *\n     * @private\n     * @param {Array} args The provided arguments.\n     * @param {Array} partials The arguments to append to those provided.\n     * @param {Array} holders The `partials` placeholder indexes.\n     * @params {boolean} [isCurried] Specify composing for a curried function.\n     * @returns {Array} Returns the new array of composed arguments.\n     */\n    function composeArgsRight(args, partials, holders, isCurried) {\n      var argsIndex = -1,\n          argsLength = args.length,\n          holdersIndex = -1,\n          holdersLength = holders.length,\n          rightIndex = -1,\n          rightLength = partials.length,\n          rangeLength = nativeMax(argsLength - holdersLength, 0),\n          result = Array(rangeLength + rightLength),\n          isUncurried = !isCurried;\n\n      while (++argsIndex < rangeLength) {\n        result[argsIndex] = args[argsIndex];\n      }\n      var offset = argsIndex;\n      while (++rightIndex < rightLength) {\n        result[offset + rightIndex] = partials[rightIndex];\n      }\n      while (++holdersIndex < holdersLength) {\n        if (isUncurried || argsIndex < argsLength) {\n          result[offset + holders[holdersIndex]] = args[argsIndex++];\n        }\n      }\n      return result;\n    }\n\n    /**\n     * Copies the values of `source` to `array`.\n     *\n     * @private\n     * @param {Array} source The array to copy values from.\n     * @param {Array} [array=[]] The array to copy values to.\n     * @returns {Array} Returns `array`.\n     */\n    function copyArray(source, array) {\n      var index = -1,\n          length = source.length;\n\n      array || (array = Array(length));\n      while (++index < length) {\n        array[index] = source[index];\n      }\n      return array;\n    }\n\n    /**\n     * Copies properties of `source` to `object`.\n     *\n     * @private\n     * @param {Object} source The object to copy properties from.\n     * @param {Array} props The property identifiers to copy.\n     * @param {Object} [object={}] The object to copy properties to.\n     * @param {Function} [customizer] The function to customize copied values.\n     * @returns {Object} Returns `object`.\n     */\n    function copyObject(source, props, object, customizer) {\n      var isNew = !object;\n      object || (object = {});\n\n      var index = -1,\n          length = props.length;\n\n      while (++index < length) {\n        var key = props[index];\n\n        var newValue = customizer\n          ? customizer(object[key], source[key], key, object, source)\n          : undefined;\n\n        if (newValue === undefined) {\n          newValue = source[key];\n        }\n        if (isNew) {\n          baseAssignValue(object, key, newValue);\n        } else {\n          assignValue(object, key, newValue);\n        }\n      }\n      return object;\n    }\n\n    /**\n     * Copies own symbols of `source` to `object`.\n     *\n     * @private\n     * @param {Object} source The object to copy symbols from.\n     * @param {Object} [object={}] The object to copy symbols to.\n     * @returns {Object} Returns `object`.\n     */\n    function copySymbols(source, object) {\n      return copyObject(source, getSymbols(source), object);\n    }\n\n    /**\n     * Copies own and inherited symbols of `source` to `object`.\n     *\n     * @private\n     * @param {Object} source The object to copy symbols from.\n     * @param {Object} [object={}] The object to copy symbols to.\n     * @returns {Object} Returns `object`.\n     */\n    function copySymbolsIn(source, object) {\n      return copyObject(source, getSymbolsIn(source), object);\n    }\n\n    /**\n     * Creates a function like `_.groupBy`.\n     *\n     * @private\n     * @param {Function} setter The function to set accumulator values.\n     * @param {Function} [initializer] The accumulator object initializer.\n     * @returns {Function} Returns the new aggregator function.\n     */\n    function createAggregator(setter, initializer) {\n      return function(collection, iteratee) {\n        var func = isArray(collection) ? arrayAggregator : baseAggregator,\n            accumulator = initializer ? initializer() : {};\n\n        return func(collection, setter, getIteratee(iteratee, 2), accumulator);\n      };\n    }\n\n    /**\n     * Creates a function like `_.assign`.\n     *\n     * @private\n     * @param {Function} assigner The function to assign values.\n     * @returns {Function} Returns the new assigner function.\n     */\n    function createAssigner(assigner) {\n      return baseRest(function(object, sources) {\n        var index = -1,\n            length = sources.length,\n            customizer = length > 1 ? sources[length - 1] : undefined,\n            guard = length > 2 ? sources[2] : undefined;\n\n        customizer = (assigner.length > 3 && typeof customizer == 'function')\n          ? (length--, customizer)\n          : undefined;\n\n        if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n          customizer = length < 3 ? undefined : customizer;\n          length = 1;\n        }\n        object = Object(object);\n        while (++index < length) {\n          var source = sources[index];\n          if (source) {\n            assigner(object, source, index, customizer);\n          }\n        }\n        return object;\n      });\n    }\n\n    /**\n     * Creates a `baseEach` or `baseEachRight` function.\n     *\n     * @private\n     * @param {Function} eachFunc The function to iterate over a collection.\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Function} Returns the new base function.\n     */\n    function createBaseEach(eachFunc, fromRight) {\n      return function(collection, iteratee) {\n        if (collection == null) {\n          return collection;\n        }\n        if (!isArrayLike(collection)) {\n          return eachFunc(collection, iteratee);\n        }\n        var length = collection.length,\n            index = fromRight ? length : -1,\n            iterable = Object(collection);\n\n        while ((fromRight ? index-- : ++index < length)) {\n          if (iteratee(iterable[index], index, iterable) === false) {\n            break;\n          }\n        }\n        return collection;\n      };\n    }\n\n    /**\n     * Creates a base function for methods like `_.forIn` and `_.forOwn`.\n     *\n     * @private\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Function} Returns the new base function.\n     */\n    function createBaseFor(fromRight) {\n      return function(object, iteratee, keysFunc) {\n        var index = -1,\n            iterable = Object(object),\n            props = keysFunc(object),\n            length = props.length;\n\n        while (length--) {\n          var key = props[fromRight ? length : ++index];\n          if (iteratee(iterable[key], key, iterable) === false) {\n            break;\n          }\n        }\n        return object;\n      };\n    }\n\n    /**\n     * Creates a function that wraps `func` to invoke it with the optional `this`\n     * binding of `thisArg`.\n     *\n     * @private\n     * @param {Function} func The function to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {*} [thisArg] The `this` binding of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createBind(func, bitmask, thisArg) {\n      var isBind = bitmask & WRAP_BIND_FLAG,\n          Ctor = createCtor(func);\n\n      function wrapper() {\n        var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n        return fn.apply(isBind ? thisArg : this, arguments);\n      }\n      return wrapper;\n    }\n\n    /**\n     * Creates a function like `_.lowerFirst`.\n     *\n     * @private\n     * @param {string} methodName The name of the `String` case method to use.\n     * @returns {Function} Returns the new case function.\n     */\n    function createCaseFirst(methodName) {\n      return function(string) {\n        string = toString(string);\n\n        var strSymbols = hasUnicode(string)\n          ? stringToArray(string)\n          : undefined;\n\n        var chr = strSymbols\n          ? strSymbols[0]\n          : string.charAt(0);\n\n        var trailing = strSymbols\n          ? castSlice(strSymbols, 1).join('')\n          : string.slice(1);\n\n        return chr[methodName]() + trailing;\n      };\n    }\n\n    /**\n     * Creates a function like `_.camelCase`.\n     *\n     * @private\n     * @param {Function} callback The function to combine each word.\n     * @returns {Function} Returns the new compounder function.\n     */\n    function createCompounder(callback) {\n      return function(string) {\n        return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');\n      };\n    }\n\n    /**\n     * Creates a function that produces an instance of `Ctor` regardless of\n     * whether it was invoked as part of a `new` expression or by `call` or `apply`.\n     *\n     * @private\n     * @param {Function} Ctor The constructor to wrap.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createCtor(Ctor) {\n      return function() {\n        // Use a `switch` statement to work with class constructors. See\n        // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist\n        // for more details.\n        var args = arguments;\n        switch (args.length) {\n          case 0: return new Ctor;\n          case 1: return new Ctor(args[0]);\n          case 2: return new Ctor(args[0], args[1]);\n          case 3: return new Ctor(args[0], args[1], args[2]);\n          case 4: return new Ctor(args[0], args[1], args[2], args[3]);\n          case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]);\n          case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);\n          case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);\n        }\n        var thisBinding = baseCreate(Ctor.prototype),\n            result = Ctor.apply(thisBinding, args);\n\n        // Mimic the constructor's `return` behavior.\n        // See https://es5.github.io/#x13.2.2 for more details.\n        return isObject(result) ? result : thisBinding;\n      };\n    }\n\n    /**\n     * Creates a function that wraps `func` to enable currying.\n     *\n     * @private\n     * @param {Function} func The function to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {number} arity The arity of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createCurry(func, bitmask, arity) {\n      var Ctor = createCtor(func);\n\n      function wrapper() {\n        var length = arguments.length,\n            args = Array(length),\n            index = length,\n            placeholder = getHolder(wrapper);\n\n        while (index--) {\n          args[index] = arguments[index];\n        }\n        var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)\n          ? []\n          : replaceHolders(args, placeholder);\n\n        length -= holders.length;\n        if (length < arity) {\n          return createRecurry(\n            func, bitmask, createHybrid, wrapper.placeholder, undefined,\n            args, holders, undefined, undefined, arity - length);\n        }\n        var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n        return apply(fn, this, args);\n      }\n      return wrapper;\n    }\n\n    /**\n     * Creates a `_.find` or `_.findLast` function.\n     *\n     * @private\n     * @param {Function} findIndexFunc The function to find the collection index.\n     * @returns {Function} Returns the new find function.\n     */\n    function createFind(findIndexFunc) {\n      return function(collection, predicate, fromIndex) {\n        var iterable = Object(collection);\n        if (!isArrayLike(collection)) {\n          var iteratee = getIteratee(predicate, 3);\n          collection = keys(collection);\n          predicate = function(key) { return iteratee(iterable[key], key, iterable); };\n        }\n        var index = findIndexFunc(collection, predicate, fromIndex);\n        return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;\n      };\n    }\n\n    /**\n     * Creates a `_.flow` or `_.flowRight` function.\n     *\n     * @private\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Function} Returns the new flow function.\n     */\n    function createFlow(fromRight) {\n      return flatRest(function(funcs) {\n        var length = funcs.length,\n            index = length,\n            prereq = LodashWrapper.prototype.thru;\n\n        if (fromRight) {\n          funcs.reverse();\n        }\n        while (index--) {\n          var func = funcs[index];\n          if (typeof func != 'function') {\n            throw new TypeError(FUNC_ERROR_TEXT);\n          }\n          if (prereq && !wrapper && getFuncName(func) == 'wrapper') {\n            var wrapper = new LodashWrapper([], true);\n          }\n        }\n        index = wrapper ? index : length;\n        while (++index < length) {\n          func = funcs[index];\n\n          var funcName = getFuncName(func),\n              data = funcName == 'wrapper' ? getData(func) : undefined;\n\n          if (data && isLaziable(data[0]) &&\n                data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&\n                !data[4].length && data[9] == 1\n              ) {\n            wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);\n          } else {\n            wrapper = (func.length == 1 && isLaziable(func))\n              ? wrapper[funcName]()\n              : wrapper.thru(func);\n          }\n        }\n        return function() {\n          var args = arguments,\n              value = args[0];\n\n          if (wrapper && args.length == 1 && isArray(value)) {\n            return wrapper.plant(value).value();\n          }\n          var index = 0,\n              result = length ? funcs[index].apply(this, args) : value;\n\n          while (++index < length) {\n            result = funcs[index].call(this, result);\n          }\n          return result;\n        };\n      });\n    }\n\n    /**\n     * Creates a function that wraps `func` to invoke it with optional `this`\n     * binding of `thisArg`, partial application, and currying.\n     *\n     * @private\n     * @param {Function|string} func The function or method name to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {*} [thisArg] The `this` binding of `func`.\n     * @param {Array} [partials] The arguments to prepend to those provided to\n     *  the new function.\n     * @param {Array} [holders] The `partials` placeholder indexes.\n     * @param {Array} [partialsRight] The arguments to append to those provided\n     *  to the new function.\n     * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.\n     * @param {Array} [argPos] The argument positions of the new function.\n     * @param {number} [ary] The arity cap of `func`.\n     * @param {number} [arity] The arity of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {\n      var isAry = bitmask & WRAP_ARY_FLAG,\n          isBind = bitmask & WRAP_BIND_FLAG,\n          isBindKey = bitmask & WRAP_BIND_KEY_FLAG,\n          isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),\n          isFlip = bitmask & WRAP_FLIP_FLAG,\n          Ctor = isBindKey ? undefined : createCtor(func);\n\n      function wrapper() {\n        var length = arguments.length,\n            args = Array(length),\n            index = length;\n\n        while (index--) {\n          args[index] = arguments[index];\n        }\n        if (isCurried) {\n          var placeholder = getHolder(wrapper),\n              holdersCount = countHolders(args, placeholder);\n        }\n        if (partials) {\n          args = composeArgs(args, partials, holders, isCurried);\n        }\n        if (partialsRight) {\n          args = composeArgsRight(args, partialsRight, holdersRight, isCurried);\n        }\n        length -= holdersCount;\n        if (isCurried && length < arity) {\n          var newHolders = replaceHolders(args, placeholder);\n          return createRecurry(\n            func, bitmask, createHybrid, wrapper.placeholder, thisArg,\n            args, newHolders, argPos, ary, arity - length\n          );\n        }\n        var thisBinding = isBind ? thisArg : this,\n            fn = isBindKey ? thisBinding[func] : func;\n\n        length = args.length;\n        if (argPos) {\n          args = reorder(args, argPos);\n        } else if (isFlip && length > 1) {\n          args.reverse();\n        }\n        if (isAry && ary < length) {\n          args.length = ary;\n        }\n        if (this && this !== root && this instanceof wrapper) {\n          fn = Ctor || createCtor(fn);\n        }\n        return fn.apply(thisBinding, args);\n      }\n      return wrapper;\n    }\n\n    /**\n     * Creates a function like `_.invertBy`.\n     *\n     * @private\n     * @param {Function} setter The function to set accumulator values.\n     * @param {Function} toIteratee The function to resolve iteratees.\n     * @returns {Function} Returns the new inverter function.\n     */\n    function createInverter(setter, toIteratee) {\n      return function(object, iteratee) {\n        return baseInverter(object, setter, toIteratee(iteratee), {});\n      };\n    }\n\n    /**\n     * Creates a function that performs a mathematical operation on two values.\n     *\n     * @private\n     * @param {Function} operator The function to perform the operation.\n     * @param {number} [defaultValue] The value used for `undefined` arguments.\n     * @returns {Function} Returns the new mathematical operation function.\n     */\n    function createMathOperation(operator, defaultValue) {\n      return function(value, other) {\n        var result;\n        if (value === undefined && other === undefined) {\n          return defaultValue;\n        }\n        if (value !== undefined) {\n          result = value;\n        }\n        if (other !== undefined) {\n          if (result === undefined) {\n            return other;\n          }\n          if (typeof value == 'string' || typeof other == 'string') {\n            value = baseToString(value);\n            other = baseToString(other);\n          } else {\n            value = baseToNumber(value);\n            other = baseToNumber(other);\n          }\n          result = operator(value, other);\n        }\n        return result;\n      };\n    }\n\n    /**\n     * Creates a function like `_.over`.\n     *\n     * @private\n     * @param {Function} arrayFunc The function to iterate over iteratees.\n     * @returns {Function} Returns the new over function.\n     */\n    function createOver(arrayFunc) {\n      return flatRest(function(iteratees) {\n        iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\n        return baseRest(function(args) {\n          var thisArg = this;\n          return arrayFunc(iteratees, function(iteratee) {\n            return apply(iteratee, thisArg, args);\n          });\n        });\n      });\n    }\n\n    /**\n     * Creates the padding for `string` based on `length`. The `chars` string\n     * is truncated if the number of characters exceeds `length`.\n     *\n     * @private\n     * @param {number} length The padding length.\n     * @param {string} [chars=' '] The string used as padding.\n     * @returns {string} Returns the padding for `string`.\n     */\n    function createPadding(length, chars) {\n      chars = chars === undefined ? ' ' : baseToString(chars);\n\n      var charsLength = chars.length;\n      if (charsLength < 2) {\n        return charsLength ? baseRepeat(chars, length) : chars;\n      }\n      var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));\n      return hasUnicode(chars)\n        ? castSlice(stringToArray(result), 0, length).join('')\n        : result.slice(0, length);\n    }\n\n    /**\n     * Creates a function that wraps `func` to invoke it with the `this` binding\n     * of `thisArg` and `partials` prepended to the arguments it receives.\n     *\n     * @private\n     * @param {Function} func The function to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {*} thisArg The `this` binding of `func`.\n     * @param {Array} partials The arguments to prepend to those provided to\n     *  the new function.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createPartial(func, bitmask, thisArg, partials) {\n      var isBind = bitmask & WRAP_BIND_FLAG,\n          Ctor = createCtor(func);\n\n      function wrapper() {\n        var argsIndex = -1,\n            argsLength = arguments.length,\n            leftIndex = -1,\n            leftLength = partials.length,\n            args = Array(leftLength + argsLength),\n            fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n\n        while (++leftIndex < leftLength) {\n          args[leftIndex] = partials[leftIndex];\n        }\n        while (argsLength--) {\n          args[leftIndex++] = arguments[++argsIndex];\n        }\n        return apply(fn, isBind ? thisArg : this, args);\n      }\n      return wrapper;\n    }\n\n    /**\n     * Creates a `_.range` or `_.rangeRight` function.\n     *\n     * @private\n     * @param {boolean} [fromRight] Specify iterating from right to left.\n     * @returns {Function} Returns the new range function.\n     */\n    function createRange(fromRight) {\n      return function(start, end, step) {\n        if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {\n          end = step = undefined;\n        }\n        // Ensure the sign of `-0` is preserved.\n        start = toFinite(start);\n        if (end === undefined) {\n          end = start;\n          start = 0;\n        } else {\n          end = toFinite(end);\n        }\n        step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);\n        return baseRange(start, end, step, fromRight);\n      };\n    }\n\n    /**\n     * Creates a function that performs a relational operation on two values.\n     *\n     * @private\n     * @param {Function} operator The function to perform the operation.\n     * @returns {Function} Returns the new relational operation function.\n     */\n    function createRelationalOperation(operator) {\n      return function(value, other) {\n        if (!(typeof value == 'string' && typeof other == 'string')) {\n          value = toNumber(value);\n          other = toNumber(other);\n        }\n        return operator(value, other);\n      };\n    }\n\n    /**\n     * Creates a function that wraps `func` to continue currying.\n     *\n     * @private\n     * @param {Function} func The function to wrap.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @param {Function} wrapFunc The function to create the `func` wrapper.\n     * @param {*} placeholder The placeholder value.\n     * @param {*} [thisArg] The `this` binding of `func`.\n     * @param {Array} [partials] The arguments to prepend to those provided to\n     *  the new function.\n     * @param {Array} [holders] The `partials` placeholder indexes.\n     * @param {Array} [argPos] The argument positions of the new function.\n     * @param {number} [ary] The arity cap of `func`.\n     * @param {number} [arity] The arity of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {\n      var isCurry = bitmask & WRAP_CURRY_FLAG,\n          newHolders = isCurry ? holders : undefined,\n          newHoldersRight = isCurry ? undefined : holders,\n          newPartials = isCurry ? partials : undefined,\n          newPartialsRight = isCurry ? undefined : partials;\n\n      bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG);\n      bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);\n\n      if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {\n        bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);\n      }\n      var newData = [\n        func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,\n        newHoldersRight, argPos, ary, arity\n      ];\n\n      var result = wrapFunc.apply(undefined, newData);\n      if (isLaziable(func)) {\n        setData(result, newData);\n      }\n      result.placeholder = placeholder;\n      return setWrapToString(result, func, bitmask);\n    }\n\n    /**\n     * Creates a function like `_.round`.\n     *\n     * @private\n     * @param {string} methodName The name of the `Math` method to use when rounding.\n     * @returns {Function} Returns the new round function.\n     */\n    function createRound(methodName) {\n      var func = Math[methodName];\n      return function(number, precision) {\n        number = toNumber(number);\n        precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);\n        if (precision && nativeIsFinite(number)) {\n          // Shift with exponential notation to avoid floating-point issues.\n          // See [MDN](https://mdn.io/round#Examples) for more details.\n          var pair = (toString(number) + 'e').split('e'),\n              value = func(pair[0] + 'e' + (+pair[1] + precision));\n\n          pair = (toString(value) + 'e').split('e');\n          return +(pair[0] + 'e' + (+pair[1] - precision));\n        }\n        return func(number);\n      };\n    }\n\n    /**\n     * Creates a set object of `values`.\n     *\n     * @private\n     * @param {Array} values The values to add to the set.\n     * @returns {Object} Returns the new set.\n     */\n    var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {\n      return new Set(values);\n    };\n\n    /**\n     * Creates a `_.toPairs` or `_.toPairsIn` function.\n     *\n     * @private\n     * @param {Function} keysFunc The function to get the keys of a given object.\n     * @returns {Function} Returns the new pairs function.\n     */\n    function createToPairs(keysFunc) {\n      return function(object) {\n        var tag = getTag(object);\n        if (tag == mapTag) {\n          return mapToArray(object);\n        }\n        if (tag == setTag) {\n          return setToPairs(object);\n        }\n        return baseToPairs(object, keysFunc(object));\n      };\n    }\n\n    /**\n     * Creates a function that either curries or invokes `func` with optional\n     * `this` binding and partially applied arguments.\n     *\n     * @private\n     * @param {Function|string} func The function or method name to wrap.\n     * @param {number} bitmask The bitmask flags.\n     *    1 - `_.bind`\n     *    2 - `_.bindKey`\n     *    4 - `_.curry` or `_.curryRight` of a bound function\n     *    8 - `_.curry`\n     *   16 - `_.curryRight`\n     *   32 - `_.partial`\n     *   64 - `_.partialRight`\n     *  128 - `_.rearg`\n     *  256 - `_.ary`\n     *  512 - `_.flip`\n     * @param {*} [thisArg] The `this` binding of `func`.\n     * @param {Array} [partials] The arguments to be partially applied.\n     * @param {Array} [holders] The `partials` placeholder indexes.\n     * @param {Array} [argPos] The argument positions of the new function.\n     * @param {number} [ary] The arity cap of `func`.\n     * @param {number} [arity] The arity of `func`.\n     * @returns {Function} Returns the new wrapped function.\n     */\n    function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {\n      var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;\n      if (!isBindKey && typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      var length = partials ? partials.length : 0;\n      if (!length) {\n        bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);\n        partials = holders = undefined;\n      }\n      ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);\n      arity = arity === undefined ? arity : toInteger(arity);\n      length -= holders ? holders.length : 0;\n\n      if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {\n        var partialsRight = partials,\n            holdersRight = holders;\n\n        partials = holders = undefined;\n      }\n      var data = isBindKey ? undefined : getData(func);\n\n      var newData = [\n        func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,\n        argPos, ary, arity\n      ];\n\n      if (data) {\n        mergeData(newData, data);\n      }\n      func = newData[0];\n      bitmask = newData[1];\n      thisArg = newData[2];\n      partials = newData[3];\n      holders = newData[4];\n      arity = newData[9] = newData[9] === undefined\n        ? (isBindKey ? 0 : func.length)\n        : nativeMax(newData[9] - length, 0);\n\n      if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {\n        bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);\n      }\n      if (!bitmask || bitmask == WRAP_BIND_FLAG) {\n        var result = createBind(func, bitmask, thisArg);\n      } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {\n        result = createCurry(func, bitmask, arity);\n      } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {\n        result = createPartial(func, bitmask, thisArg, partials);\n      } else {\n        result = createHybrid.apply(undefined, newData);\n      }\n      var setter = data ? baseSetData : setData;\n      return setWrapToString(setter(result, newData), func, bitmask);\n    }\n\n    /**\n     * Used by `_.defaults` to customize its `_.assignIn` use to assign properties\n     * of source objects to the destination object for all destination properties\n     * that resolve to `undefined`.\n     *\n     * @private\n     * @param {*} objValue The destination value.\n     * @param {*} srcValue The source value.\n     * @param {string} key The key of the property to assign.\n     * @param {Object} object The parent object of `objValue`.\n     * @returns {*} Returns the value to assign.\n     */\n    function customDefaultsAssignIn(objValue, srcValue, key, object) {\n      if (objValue === undefined ||\n          (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {\n        return srcValue;\n      }\n      return objValue;\n    }\n\n    /**\n     * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source\n     * objects into destination objects that are passed thru.\n     *\n     * @private\n     * @param {*} objValue The destination value.\n     * @param {*} srcValue The source value.\n     * @param {string} key The key of the property to merge.\n     * @param {Object} object The parent object of `objValue`.\n     * @param {Object} source The parent object of `srcValue`.\n     * @param {Object} [stack] Tracks traversed source values and their merged\n     *  counterparts.\n     * @returns {*} Returns the value to assign.\n     */\n    function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {\n      if (isObject(objValue) && isObject(srcValue)) {\n        // Recursively merge objects and arrays (susceptible to call stack limits).\n        stack.set(srcValue, objValue);\n        baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);\n        stack['delete'](srcValue);\n      }\n      return objValue;\n    }\n\n    /**\n     * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain\n     * objects.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @param {string} key The key of the property to inspect.\n     * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.\n     */\n    function customOmitClone(value) {\n      return isPlainObject(value) ? undefined : value;\n    }\n\n    /**\n     * A specialized version of `baseIsEqualDeep` for arrays with support for\n     * partial deep comparisons.\n     *\n     * @private\n     * @param {Array} array The array to compare.\n     * @param {Array} other The other array to compare.\n     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n     * @param {Function} customizer The function to customize comparisons.\n     * @param {Function} equalFunc The function to determine equivalents of values.\n     * @param {Object} stack Tracks traversed `array` and `other` objects.\n     * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.\n     */\n    function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {\n      var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n          arrLength = array.length,\n          othLength = other.length;\n\n      if (arrLength != othLength && !(isPartial && othLength > arrLength)) {\n        return false;\n      }\n      // Assume cyclic values are equal.\n      var stacked = stack.get(array);\n      if (stacked && stack.get(other)) {\n        return stacked == other;\n      }\n      var index = -1,\n          result = true,\n          seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;\n\n      stack.set(array, other);\n      stack.set(other, array);\n\n      // Ignore non-index properties.\n      while (++index < arrLength) {\n        var arrValue = array[index],\n            othValue = other[index];\n\n        if (customizer) {\n          var compared = isPartial\n            ? customizer(othValue, arrValue, index, other, array, stack)\n            : customizer(arrValue, othValue, index, array, other, stack);\n        }\n        if (compared !== undefined) {\n          if (compared) {\n            continue;\n          }\n          result = false;\n          break;\n        }\n        // Recursively compare arrays (susceptible to call stack limits).\n        if (seen) {\n          if (!arraySome(other, function(othValue, othIndex) {\n                if (!cacheHas(seen, othIndex) &&\n                    (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {\n                  return seen.push(othIndex);\n                }\n              })) {\n            result = false;\n            break;\n          }\n        } else if (!(\n              arrValue === othValue ||\n                equalFunc(arrValue, othValue, bitmask, customizer, stack)\n            )) {\n          result = false;\n          break;\n        }\n      }\n      stack['delete'](array);\n      stack['delete'](other);\n      return result;\n    }\n\n    /**\n     * A specialized version of `baseIsEqualDeep` for comparing objects of\n     * the same `toStringTag`.\n     *\n     * **Note:** This function only supports comparing values with tags of\n     * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n     *\n     * @private\n     * @param {Object} object The object to compare.\n     * @param {Object} other The other object to compare.\n     * @param {string} tag The `toStringTag` of the objects to compare.\n     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n     * @param {Function} customizer The function to customize comparisons.\n     * @param {Function} equalFunc The function to determine equivalents of values.\n     * @param {Object} stack Tracks traversed `object` and `other` objects.\n     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n     */\n    function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {\n      switch (tag) {\n        case dataViewTag:\n          if ((object.byteLength != other.byteLength) ||\n              (object.byteOffset != other.byteOffset)) {\n            return false;\n          }\n          object = object.buffer;\n          other = other.buffer;\n\n        case arrayBufferTag:\n          if ((object.byteLength != other.byteLength) ||\n              !equalFunc(new Uint8Array(object), new Uint8Array(other))) {\n            return false;\n          }\n          return true;\n\n        case boolTag:\n        case dateTag:\n        case numberTag:\n          // Coerce booleans to `1` or `0` and dates to milliseconds.\n          // Invalid dates are coerced to `NaN`.\n          return eq(+object, +other);\n\n        case errorTag:\n          return object.name == other.name && object.message == other.message;\n\n        case regexpTag:\n        case stringTag:\n          // Coerce regexes to strings and treat strings, primitives and objects,\n          // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring\n          // for more details.\n          return object == (other + '');\n\n        case mapTag:\n          var convert = mapToArray;\n\n        case setTag:\n          var isPartial = bitmask & COMPARE_PARTIAL_FLAG;\n          convert || (convert = setToArray);\n\n          if (object.size != other.size && !isPartial) {\n            return false;\n          }\n          // Assume cyclic values are equal.\n          var stacked = stack.get(object);\n          if (stacked) {\n            return stacked == other;\n          }\n          bitmask |= COMPARE_UNORDERED_FLAG;\n\n          // Recursively compare objects (susceptible to call stack limits).\n          stack.set(object, other);\n          var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);\n          stack['delete'](object);\n          return result;\n\n        case symbolTag:\n          if (symbolValueOf) {\n            return symbolValueOf.call(object) == symbolValueOf.call(other);\n          }\n      }\n      return false;\n    }\n\n    /**\n     * A specialized version of `baseIsEqualDeep` for objects with support for\n     * partial deep comparisons.\n     *\n     * @private\n     * @param {Object} object The object to compare.\n     * @param {Object} other The other object to compare.\n     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n     * @param {Function} customizer The function to customize comparisons.\n     * @param {Function} equalFunc The function to determine equivalents of values.\n     * @param {Object} stack Tracks traversed `object` and `other` objects.\n     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n     */\n    function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {\n      var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n          objProps = getAllKeys(object),\n          objLength = objProps.length,\n          othProps = getAllKeys(other),\n          othLength = othProps.length;\n\n      if (objLength != othLength && !isPartial) {\n        return false;\n      }\n      var index = objLength;\n      while (index--) {\n        var key = objProps[index];\n        if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {\n          return false;\n        }\n      }\n      // Assume cyclic values are equal.\n      var stacked = stack.get(object);\n      if (stacked && stack.get(other)) {\n        return stacked == other;\n      }\n      var result = true;\n      stack.set(object, other);\n      stack.set(other, object);\n\n      var skipCtor = isPartial;\n      while (++index < objLength) {\n        key = objProps[index];\n        var objValue = object[key],\n            othValue = other[key];\n\n        if (customizer) {\n          var compared = isPartial\n            ? customizer(othValue, objValue, key, other, object, stack)\n            : customizer(objValue, othValue, key, object, other, stack);\n        }\n        // Recursively compare objects (susceptible to call stack limits).\n        if (!(compared === undefined\n              ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))\n              : compared\n            )) {\n          result = false;\n          break;\n        }\n        skipCtor || (skipCtor = key == 'constructor');\n      }\n      if (result && !skipCtor) {\n        var objCtor = object.constructor,\n            othCtor = other.constructor;\n\n        // Non `Object` object instances with different constructors are not equal.\n        if (objCtor != othCtor &&\n            ('constructor' in object && 'constructor' in other) &&\n            !(typeof objCtor == 'function' && objCtor instanceof objCtor &&\n              typeof othCtor == 'function' && othCtor instanceof othCtor)) {\n          result = false;\n        }\n      }\n      stack['delete'](object);\n      stack['delete'](other);\n      return result;\n    }\n\n    /**\n     * A specialized version of `baseRest` which flattens the rest array.\n     *\n     * @private\n     * @param {Function} func The function to apply a rest parameter to.\n     * @returns {Function} Returns the new function.\n     */\n    function flatRest(func) {\n      return setToString(overRest(func, undefined, flatten), func + '');\n    }\n\n    /**\n     * Creates an array of own enumerable property names and symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names and symbols.\n     */\n    function getAllKeys(object) {\n      return baseGetAllKeys(object, keys, getSymbols);\n    }\n\n    /**\n     * Creates an array of own and inherited enumerable property names and\n     * symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names and symbols.\n     */\n    function getAllKeysIn(object) {\n      return baseGetAllKeys(object, keysIn, getSymbolsIn);\n    }\n\n    /**\n     * Gets metadata for `func`.\n     *\n     * @private\n     * @param {Function} func The function to query.\n     * @returns {*} Returns the metadata for `func`.\n     */\n    var getData = !metaMap ? noop : function(func) {\n      return metaMap.get(func);\n    };\n\n    /**\n     * Gets the name of `func`.\n     *\n     * @private\n     * @param {Function} func The function to query.\n     * @returns {string} Returns the function name.\n     */\n    function getFuncName(func) {\n      var result = (func.name + ''),\n          array = realNames[result],\n          length = hasOwnProperty.call(realNames, result) ? array.length : 0;\n\n      while (length--) {\n        var data = array[length],\n            otherFunc = data.func;\n        if (otherFunc == null || otherFunc == func) {\n          return data.name;\n        }\n      }\n      return result;\n    }\n\n    /**\n     * Gets the argument placeholder value for `func`.\n     *\n     * @private\n     * @param {Function} func The function to inspect.\n     * @returns {*} Returns the placeholder value.\n     */\n    function getHolder(func) {\n      var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;\n      return object.placeholder;\n    }\n\n    /**\n     * Gets the appropriate \"iteratee\" function. If `_.iteratee` is customized,\n     * this function returns the custom method, otherwise it returns `baseIteratee`.\n     * If arguments are provided, the chosen function is invoked with them and\n     * its result is returned.\n     *\n     * @private\n     * @param {*} [value] The value to convert to an iteratee.\n     * @param {number} [arity] The arity of the created iteratee.\n     * @returns {Function} Returns the chosen function or its result.\n     */\n    function getIteratee() {\n      var result = lodash.iteratee || iteratee;\n      result = result === iteratee ? baseIteratee : result;\n      return arguments.length ? result(arguments[0], arguments[1]) : result;\n    }\n\n    /**\n     * Gets the data for `map`.\n     *\n     * @private\n     * @param {Object} map The map to query.\n     * @param {string} key The reference key.\n     * @returns {*} Returns the map data.\n     */\n    function getMapData(map, key) {\n      var data = map.__data__;\n      return isKeyable(key)\n        ? data[typeof key == 'string' ? 'string' : 'hash']\n        : data.map;\n    }\n\n    /**\n     * Gets the property names, values, and compare flags of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the match data of `object`.\n     */\n    function getMatchData(object) {\n      var result = keys(object),\n          length = result.length;\n\n      while (length--) {\n        var key = result[length],\n            value = object[key];\n\n        result[length] = [key, value, isStrictComparable(value)];\n      }\n      return result;\n    }\n\n    /**\n     * Gets the native function at `key` of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {string} key The key of the method to get.\n     * @returns {*} Returns the function if it's native, else `undefined`.\n     */\n    function getNative(object, key) {\n      var value = getValue(object, key);\n      return baseIsNative(value) ? value : undefined;\n    }\n\n    /**\n     * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.\n     *\n     * @private\n     * @param {*} value The value to query.\n     * @returns {string} Returns the raw `toStringTag`.\n     */\n    function getRawTag(value) {\n      var isOwn = hasOwnProperty.call(value, symToStringTag),\n          tag = value[symToStringTag];\n\n      try {\n        value[symToStringTag] = undefined;\n        var unmasked = true;\n      } catch (e) {}\n\n      var result = nativeObjectToString.call(value);\n      if (unmasked) {\n        if (isOwn) {\n          value[symToStringTag] = tag;\n        } else {\n          delete value[symToStringTag];\n        }\n      }\n      return result;\n    }\n\n    /**\n     * Creates an array of the own enumerable symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of symbols.\n     */\n    var getSymbols = !nativeGetSymbols ? stubArray : function(object) {\n      if (object == null) {\n        return [];\n      }\n      object = Object(object);\n      return arrayFilter(nativeGetSymbols(object), function(symbol) {\n        return propertyIsEnumerable.call(object, symbol);\n      });\n    };\n\n    /**\n     * Creates an array of the own and inherited enumerable symbols of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of symbols.\n     */\n    var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {\n      var result = [];\n      while (object) {\n        arrayPush(result, getSymbols(object));\n        object = getPrototype(object);\n      }\n      return result;\n    };\n\n    /**\n     * Gets the `toStringTag` of `value`.\n     *\n     * @private\n     * @param {*} value The value to query.\n     * @returns {string} Returns the `toStringTag`.\n     */\n    var getTag = baseGetTag;\n\n    // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.\n    if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||\n        (Map && getTag(new Map) != mapTag) ||\n        (Promise && getTag(Promise.resolve()) != promiseTag) ||\n        (Set && getTag(new Set) != setTag) ||\n        (WeakMap && getTag(new WeakMap) != weakMapTag)) {\n      getTag = function(value) {\n        var result = baseGetTag(value),\n            Ctor = result == objectTag ? value.constructor : undefined,\n            ctorString = Ctor ? toSource(Ctor) : '';\n\n        if (ctorString) {\n          switch (ctorString) {\n            case dataViewCtorString: return dataViewTag;\n            case mapCtorString: return mapTag;\n            case promiseCtorString: return promiseTag;\n            case setCtorString: return setTag;\n            case weakMapCtorString: return weakMapTag;\n          }\n        }\n        return result;\n      };\n    }\n\n    /**\n     * Gets the view, applying any `transforms` to the `start` and `end` positions.\n     *\n     * @private\n     * @param {number} start The start of the view.\n     * @param {number} end The end of the view.\n     * @param {Array} transforms The transformations to apply to the view.\n     * @returns {Object} Returns an object containing the `start` and `end`\n     *  positions of the view.\n     */\n    function getView(start, end, transforms) {\n      var index = -1,\n          length = transforms.length;\n\n      while (++index < length) {\n        var data = transforms[index],\n            size = data.size;\n\n        switch (data.type) {\n          case 'drop':      start += size; break;\n          case 'dropRight': end -= size; break;\n          case 'take':      end = nativeMin(end, start + size); break;\n          case 'takeRight': start = nativeMax(start, end - size); break;\n        }\n      }\n      return { 'start': start, 'end': end };\n    }\n\n    /**\n     * Extracts wrapper details from the `source` body comment.\n     *\n     * @private\n     * @param {string} source The source to inspect.\n     * @returns {Array} Returns the wrapper details.\n     */\n    function getWrapDetails(source) {\n      var match = source.match(reWrapDetails);\n      return match ? match[1].split(reSplitDetails) : [];\n    }\n\n    /**\n     * Checks if `path` exists on `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path to check.\n     * @param {Function} hasFunc The function to check properties.\n     * @returns {boolean} Returns `true` if `path` exists, else `false`.\n     */\n    function hasPath(object, path, hasFunc) {\n      path = castPath(path, object);\n\n      var index = -1,\n          length = path.length,\n          result = false;\n\n      while (++index < length) {\n        var key = toKey(path[index]);\n        if (!(result = object != null && hasFunc(object, key))) {\n          break;\n        }\n        object = object[key];\n      }\n      if (result || ++index != length) {\n        return result;\n      }\n      length = object == null ? 0 : object.length;\n      return !!length && isLength(length) && isIndex(key, length) &&\n        (isArray(object) || isArguments(object));\n    }\n\n    /**\n     * Initializes an array clone.\n     *\n     * @private\n     * @param {Array} array The array to clone.\n     * @returns {Array} Returns the initialized clone.\n     */\n    function initCloneArray(array) {\n      var length = array.length,\n          result = new array.constructor(length);\n\n      // Add properties assigned by `RegExp#exec`.\n      if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {\n        result.index = array.index;\n        result.input = array.input;\n      }\n      return result;\n    }\n\n    /**\n     * Initializes an object clone.\n     *\n     * @private\n     * @param {Object} object The object to clone.\n     * @returns {Object} Returns the initialized clone.\n     */\n    function initCloneObject(object) {\n      return (typeof object.constructor == 'function' && !isPrototype(object))\n        ? baseCreate(getPrototype(object))\n        : {};\n    }\n\n    /**\n     * Initializes an object clone based on its `toStringTag`.\n     *\n     * **Note:** This function only supports cloning values with tags of\n     * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.\n     *\n     * @private\n     * @param {Object} object The object to clone.\n     * @param {string} tag The `toStringTag` of the object to clone.\n     * @param {boolean} [isDeep] Specify a deep clone.\n     * @returns {Object} Returns the initialized clone.\n     */\n    function initCloneByTag(object, tag, isDeep) {\n      var Ctor = object.constructor;\n      switch (tag) {\n        case arrayBufferTag:\n          return cloneArrayBuffer(object);\n\n        case boolTag:\n        case dateTag:\n          return new Ctor(+object);\n\n        case dataViewTag:\n          return cloneDataView(object, isDeep);\n\n        case float32Tag: case float64Tag:\n        case int8Tag: case int16Tag: case int32Tag:\n        case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:\n          return cloneTypedArray(object, isDeep);\n\n        case mapTag:\n          return new Ctor;\n\n        case numberTag:\n        case stringTag:\n          return new Ctor(object);\n\n        case regexpTag:\n          return cloneRegExp(object);\n\n        case setTag:\n          return new Ctor;\n\n        case symbolTag:\n          return cloneSymbol(object);\n      }\n    }\n\n    /**\n     * Inserts wrapper `details` in a comment at the top of the `source` body.\n     *\n     * @private\n     * @param {string} source The source to modify.\n     * @returns {Array} details The details to insert.\n     * @returns {string} Returns the modified source.\n     */\n    function insertWrapDetails(source, details) {\n      var length = details.length;\n      if (!length) {\n        return source;\n      }\n      var lastIndex = length - 1;\n      details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];\n      details = details.join(length > 2 ? ', ' : ' ');\n      return source.replace(reWrapComment, '{\\n/* [wrapped with ' + details + '] */\\n');\n    }\n\n    /**\n     * Checks if `value` is a flattenable `arguments` object or array.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.\n     */\n    function isFlattenable(value) {\n      return isArray(value) || isArguments(value) ||\n        !!(spreadableSymbol && value && value[spreadableSymbol]);\n    }\n\n    /**\n     * Checks if `value` is a valid array-like index.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.\n     * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.\n     */\n    function isIndex(value, length) {\n      var type = typeof value;\n      length = length == null ? MAX_SAFE_INTEGER : length;\n\n      return !!length &&\n        (type == 'number' ||\n          (type != 'symbol' && reIsUint.test(value))) &&\n            (value > -1 && value % 1 == 0 && value < length);\n    }\n\n    /**\n     * Checks if the given arguments are from an iteratee call.\n     *\n     * @private\n     * @param {*} value The potential iteratee value argument.\n     * @param {*} index The potential iteratee index or key argument.\n     * @param {*} object The potential iteratee object argument.\n     * @returns {boolean} Returns `true` if the arguments are from an iteratee call,\n     *  else `false`.\n     */\n    function isIterateeCall(value, index, object) {\n      if (!isObject(object)) {\n        return false;\n      }\n      var type = typeof index;\n      if (type == 'number'\n            ? (isArrayLike(object) && isIndex(index, object.length))\n            : (type == 'string' && index in object)\n          ) {\n        return eq(object[index], value);\n      }\n      return false;\n    }\n\n    /**\n     * Checks if `value` is a property name and not a property path.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @param {Object} [object] The object to query keys on.\n     * @returns {boolean} Returns `true` if `value` is a property name, else `false`.\n     */\n    function isKey(value, object) {\n      if (isArray(value)) {\n        return false;\n      }\n      var type = typeof value;\n      if (type == 'number' || type == 'symbol' || type == 'boolean' ||\n          value == null || isSymbol(value)) {\n        return true;\n      }\n      return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||\n        (object != null && value in Object(object));\n    }\n\n    /**\n     * Checks if `value` is suitable for use as unique object key.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is suitable, else `false`.\n     */\n    function isKeyable(value) {\n      var type = typeof value;\n      return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')\n        ? (value !== '__proto__')\n        : (value === null);\n    }\n\n    /**\n     * Checks if `func` has a lazy counterpart.\n     *\n     * @private\n     * @param {Function} func The function to check.\n     * @returns {boolean} Returns `true` if `func` has a lazy counterpart,\n     *  else `false`.\n     */\n    function isLaziable(func) {\n      var funcName = getFuncName(func),\n          other = lodash[funcName];\n\n      if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {\n        return false;\n      }\n      if (func === other) {\n        return true;\n      }\n      var data = getData(other);\n      return !!data && func === data[0];\n    }\n\n    /**\n     * Checks if `func` has its source masked.\n     *\n     * @private\n     * @param {Function} func The function to check.\n     * @returns {boolean} Returns `true` if `func` is masked, else `false`.\n     */\n    function isMasked(func) {\n      return !!maskSrcKey && (maskSrcKey in func);\n    }\n\n    /**\n     * Checks if `func` is capable of being masked.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `func` is maskable, else `false`.\n     */\n    var isMaskable = coreJsData ? isFunction : stubFalse;\n\n    /**\n     * Checks if `value` is likely a prototype object.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.\n     */\n    function isPrototype(value) {\n      var Ctor = value && value.constructor,\n          proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;\n\n      return value === proto;\n    }\n\n    /**\n     * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.\n     *\n     * @private\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` if suitable for strict\n     *  equality comparisons, else `false`.\n     */\n    function isStrictComparable(value) {\n      return value === value && !isObject(value);\n    }\n\n    /**\n     * A specialized version of `matchesProperty` for source values suitable\n     * for strict equality comparisons, i.e. `===`.\n     *\n     * @private\n     * @param {string} key The key of the property to get.\n     * @param {*} srcValue The value to match.\n     * @returns {Function} Returns the new spec function.\n     */\n    function matchesStrictComparable(key, srcValue) {\n      return function(object) {\n        if (object == null) {\n          return false;\n        }\n        return object[key] === srcValue &&\n          (srcValue !== undefined || (key in Object(object)));\n      };\n    }\n\n    /**\n     * A specialized version of `_.memoize` which clears the memoized function's\n     * cache when it exceeds `MAX_MEMOIZE_SIZE`.\n     *\n     * @private\n     * @param {Function} func The function to have its output memoized.\n     * @returns {Function} Returns the new memoized function.\n     */\n    function memoizeCapped(func) {\n      var result = memoize(func, function(key) {\n        if (cache.size === MAX_MEMOIZE_SIZE) {\n          cache.clear();\n        }\n        return key;\n      });\n\n      var cache = result.cache;\n      return result;\n    }\n\n    /**\n     * Merges the function metadata of `source` into `data`.\n     *\n     * Merging metadata reduces the number of wrappers used to invoke a function.\n     * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`\n     * may be applied regardless of execution order. Methods like `_.ary` and\n     * `_.rearg` modify function arguments, making the order in which they are\n     * executed important, preventing the merging of metadata. However, we make\n     * an exception for a safe combined case where curried functions have `_.ary`\n     * and or `_.rearg` applied.\n     *\n     * @private\n     * @param {Array} data The destination metadata.\n     * @param {Array} source The source metadata.\n     * @returns {Array} Returns `data`.\n     */\n    function mergeData(data, source) {\n      var bitmask = data[1],\n          srcBitmask = source[1],\n          newBitmask = bitmask | srcBitmask,\n          isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);\n\n      var isCombo =\n        ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) ||\n        ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) ||\n        ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG));\n\n      // Exit early if metadata can't be merged.\n      if (!(isCommon || isCombo)) {\n        return data;\n      }\n      // Use source `thisArg` if available.\n      if (srcBitmask & WRAP_BIND_FLAG) {\n        data[2] = source[2];\n        // Set when currying a bound function.\n        newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;\n      }\n      // Compose partial arguments.\n      var value = source[3];\n      if (value) {\n        var partials = data[3];\n        data[3] = partials ? composeArgs(partials, value, source[4]) : value;\n        data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];\n      }\n      // Compose partial right arguments.\n      value = source[5];\n      if (value) {\n        partials = data[5];\n        data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;\n        data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];\n      }\n      // Use source `argPos` if available.\n      value = source[7];\n      if (value) {\n        data[7] = value;\n      }\n      // Use source `ary` if it's smaller.\n      if (srcBitmask & WRAP_ARY_FLAG) {\n        data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);\n      }\n      // Use source `arity` if one is not provided.\n      if (data[9] == null) {\n        data[9] = source[9];\n      }\n      // Use source `func` and merge bitmasks.\n      data[0] = source[0];\n      data[1] = newBitmask;\n\n      return data;\n    }\n\n    /**\n     * This function is like\n     * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n     * except that it includes inherited enumerable properties.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     */\n    function nativeKeysIn(object) {\n      var result = [];\n      if (object != null) {\n        for (var key in Object(object)) {\n          result.push(key);\n        }\n      }\n      return result;\n    }\n\n    /**\n     * Converts `value` to a string using `Object.prototype.toString`.\n     *\n     * @private\n     * @param {*} value The value to convert.\n     * @returns {string} Returns the converted string.\n     */\n    function objectToString(value) {\n      return nativeObjectToString.call(value);\n    }\n\n    /**\n     * A specialized version of `baseRest` which transforms the rest array.\n     *\n     * @private\n     * @param {Function} func The function to apply a rest parameter to.\n     * @param {number} [start=func.length-1] The start position of the rest parameter.\n     * @param {Function} transform The rest array transform.\n     * @returns {Function} Returns the new function.\n     */\n    function overRest(func, start, transform) {\n      start = nativeMax(start === undefined ? (func.length - 1) : start, 0);\n      return function() {\n        var args = arguments,\n            index = -1,\n            length = nativeMax(args.length - start, 0),\n            array = Array(length);\n\n        while (++index < length) {\n          array[index] = args[start + index];\n        }\n        index = -1;\n        var otherArgs = Array(start + 1);\n        while (++index < start) {\n          otherArgs[index] = args[index];\n        }\n        otherArgs[start] = transform(array);\n        return apply(func, this, otherArgs);\n      };\n    }\n\n    /**\n     * Gets the parent value at `path` of `object`.\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {Array} path The path to get the parent value of.\n     * @returns {*} Returns the parent value.\n     */\n    function parent(object, path) {\n      return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));\n    }\n\n    /**\n     * Reorder `array` according to the specified indexes where the element at\n     * the first index is assigned as the first element, the element at\n     * the second index is assigned as the second element, and so on.\n     *\n     * @private\n     * @param {Array} array The array to reorder.\n     * @param {Array} indexes The arranged array indexes.\n     * @returns {Array} Returns `array`.\n     */\n    function reorder(array, indexes) {\n      var arrLength = array.length,\n          length = nativeMin(indexes.length, arrLength),\n          oldArray = copyArray(array);\n\n      while (length--) {\n        var index = indexes[length];\n        array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;\n      }\n      return array;\n    }\n\n    /**\n     * Gets the value at `key`, unless `key` is \"__proto__\" or \"constructor\".\n     *\n     * @private\n     * @param {Object} object The object to query.\n     * @param {string} key The key of the property to get.\n     * @returns {*} Returns the property value.\n     */\n    function safeGet(object, key) {\n      if (key === 'constructor' && typeof object[key] === 'function') {\n        return;\n      }\n\n      if (key == '__proto__') {\n        return;\n      }\n\n      return object[key];\n    }\n\n    /**\n     * Sets metadata for `func`.\n     *\n     * **Note:** If this function becomes hot, i.e. is invoked a lot in a short\n     * period of time, it will trip its breaker and transition to an identity\n     * function to avoid garbage collection pauses in V8. See\n     * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)\n     * for more details.\n     *\n     * @private\n     * @param {Function} func The function to associate metadata with.\n     * @param {*} data The metadata.\n     * @returns {Function} Returns `func`.\n     */\n    var setData = shortOut(baseSetData);\n\n    /**\n     * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).\n     *\n     * @private\n     * @param {Function} func The function to delay.\n     * @param {number} wait The number of milliseconds to delay invocation.\n     * @returns {number|Object} Returns the timer id or timeout object.\n     */\n    var setTimeout = ctxSetTimeout || function(func, wait) {\n      return root.setTimeout(func, wait);\n    };\n\n    /**\n     * Sets the `toString` method of `func` to return `string`.\n     *\n     * @private\n     * @param {Function} func The function to modify.\n     * @param {Function} string The `toString` result.\n     * @returns {Function} Returns `func`.\n     */\n    var setToString = shortOut(baseSetToString);\n\n    /**\n     * Sets the `toString` method of `wrapper` to mimic the source of `reference`\n     * with wrapper details in a comment at the top of the source body.\n     *\n     * @private\n     * @param {Function} wrapper The function to modify.\n     * @param {Function} reference The reference function.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @returns {Function} Returns `wrapper`.\n     */\n    function setWrapToString(wrapper, reference, bitmask) {\n      var source = (reference + '');\n      return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));\n    }\n\n    /**\n     * Creates a function that'll short out and invoke `identity` instead\n     * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`\n     * milliseconds.\n     *\n     * @private\n     * @param {Function} func The function to restrict.\n     * @returns {Function} Returns the new shortable function.\n     */\n    function shortOut(func) {\n      var count = 0,\n          lastCalled = 0;\n\n      return function() {\n        var stamp = nativeNow(),\n            remaining = HOT_SPAN - (stamp - lastCalled);\n\n        lastCalled = stamp;\n        if (remaining > 0) {\n          if (++count >= HOT_COUNT) {\n            return arguments[0];\n          }\n        } else {\n          count = 0;\n        }\n        return func.apply(undefined, arguments);\n      };\n    }\n\n    /**\n     * A specialized version of `_.shuffle` which mutates and sets the size of `array`.\n     *\n     * @private\n     * @param {Array} array The array to shuffle.\n     * @param {number} [size=array.length] The size of `array`.\n     * @returns {Array} Returns `array`.\n     */\n    function shuffleSelf(array, size) {\n      var index = -1,\n          length = array.length,\n          lastIndex = length - 1;\n\n      size = size === undefined ? length : size;\n      while (++index < size) {\n        var rand = baseRandom(index, lastIndex),\n            value = array[rand];\n\n        array[rand] = array[index];\n        array[index] = value;\n      }\n      array.length = size;\n      return array;\n    }\n\n    /**\n     * Converts `string` to a property path array.\n     *\n     * @private\n     * @param {string} string The string to convert.\n     * @returns {Array} Returns the property path array.\n     */\n    var stringToPath = memoizeCapped(function(string) {\n      var result = [];\n      if (string.charCodeAt(0) === 46 /* . */) {\n        result.push('');\n      }\n      string.replace(rePropName, function(match, number, quote, subString) {\n        result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));\n      });\n      return result;\n    });\n\n    /**\n     * Converts `value` to a string key if it's not a string or symbol.\n     *\n     * @private\n     * @param {*} value The value to inspect.\n     * @returns {string|symbol} Returns the key.\n     */\n    function toKey(value) {\n      if (typeof value == 'string' || isSymbol(value)) {\n        return value;\n      }\n      var result = (value + '');\n      return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n    }\n\n    /**\n     * Converts `func` to its source code.\n     *\n     * @private\n     * @param {Function} func The function to convert.\n     * @returns {string} Returns the source code.\n     */\n    function toSource(func) {\n      if (func != null) {\n        try {\n          return funcToString.call(func);\n        } catch (e) {}\n        try {\n          return (func + '');\n        } catch (e) {}\n      }\n      return '';\n    }\n\n    /**\n     * Updates wrapper `details` based on `bitmask` flags.\n     *\n     * @private\n     * @returns {Array} details The details to modify.\n     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n     * @returns {Array} Returns `details`.\n     */\n    function updateWrapDetails(details, bitmask) {\n      arrayEach(wrapFlags, function(pair) {\n        var value = '_.' + pair[0];\n        if ((bitmask & pair[1]) && !arrayIncludes(details, value)) {\n          details.push(value);\n        }\n      });\n      return details.sort();\n    }\n\n    /**\n     * Creates a clone of `wrapper`.\n     *\n     * @private\n     * @param {Object} wrapper The wrapper to clone.\n     * @returns {Object} Returns the cloned wrapper.\n     */\n    function wrapperClone(wrapper) {\n      if (wrapper instanceof LazyWrapper) {\n        return wrapper.clone();\n      }\n      var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);\n      result.__actions__ = copyArray(wrapper.__actions__);\n      result.__index__  = wrapper.__index__;\n      result.__values__ = wrapper.__values__;\n      return result;\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates an array of elements split into groups the length of `size`.\n     * If `array` can't be split evenly, the final chunk will be the remaining\n     * elements.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to process.\n     * @param {number} [size=1] The length of each chunk\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the new array of chunks.\n     * @example\n     *\n     * _.chunk(['a', 'b', 'c', 'd'], 2);\n     * // => [['a', 'b'], ['c', 'd']]\n     *\n     * _.chunk(['a', 'b', 'c', 'd'], 3);\n     * // => [['a', 'b', 'c'], ['d']]\n     */\n    function chunk(array, size, guard) {\n      if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) {\n        size = 1;\n      } else {\n        size = nativeMax(toInteger(size), 0);\n      }\n      var length = array == null ? 0 : array.length;\n      if (!length || size < 1) {\n        return [];\n      }\n      var index = 0,\n          resIndex = 0,\n          result = Array(nativeCeil(length / size));\n\n      while (index < length) {\n        result[resIndex++] = baseSlice(array, index, (index += size));\n      }\n      return result;\n    }\n\n    /**\n     * Creates an array with all falsey values removed. The values `false`, `null`,\n     * `0`, `\"\"`, `undefined`, and `NaN` are falsey.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to compact.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * _.compact([0, 1, false, 2, '', 3]);\n     * // => [1, 2, 3]\n     */\n    function compact(array) {\n      var index = -1,\n          length = array == null ? 0 : array.length,\n          resIndex = 0,\n          result = [];\n\n      while (++index < length) {\n        var value = array[index];\n        if (value) {\n          result[resIndex++] = value;\n        }\n      }\n      return result;\n    }\n\n    /**\n     * Creates a new array concatenating `array` with any additional arrays\n     * and/or values.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to concatenate.\n     * @param {...*} [values] The values to concatenate.\n     * @returns {Array} Returns the new concatenated array.\n     * @example\n     *\n     * var array = [1];\n     * var other = _.concat(array, 2, [3], [[4]]);\n     *\n     * console.log(other);\n     * // => [1, 2, 3, [4]]\n     *\n     * console.log(array);\n     * // => [1]\n     */\n    function concat() {\n      var length = arguments.length;\n      if (!length) {\n        return [];\n      }\n      var args = Array(length - 1),\n          array = arguments[0],\n          index = length;\n\n      while (index--) {\n        args[index - 1] = arguments[index];\n      }\n      return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));\n    }\n\n    /**\n     * Creates an array of `array` values not included in the other given arrays\n     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons. The order and references of result values are\n     * determined by the first array.\n     *\n     * **Note:** Unlike `_.pullAll`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {...Array} [values] The values to exclude.\n     * @returns {Array} Returns the new array of filtered values.\n     * @see _.without, _.xor\n     * @example\n     *\n     * _.difference([2, 1], [2, 3]);\n     * // => [1]\n     */\n    var difference = baseRest(function(array, values) {\n      return isArrayLikeObject(array)\n        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))\n        : [];\n    });\n\n    /**\n     * This method is like `_.difference` except that it accepts `iteratee` which\n     * is invoked for each element of `array` and `values` to generate the criterion\n     * by which they're compared. The order and references of result values are\n     * determined by the first array. The iteratee is invoked with one argument:\n     * (value).\n     *\n     * **Note:** Unlike `_.pullAllBy`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {...Array} [values] The values to exclude.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n     * // => [1.2]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');\n     * // => [{ 'x': 2 }]\n     */\n    var differenceBy = baseRest(function(array, values) {\n      var iteratee = last(values);\n      if (isArrayLikeObject(iteratee)) {\n        iteratee = undefined;\n      }\n      return isArrayLikeObject(array)\n        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2))\n        : [];\n    });\n\n    /**\n     * This method is like `_.difference` except that it accepts `comparator`\n     * which is invoked to compare elements of `array` to `values`. The order and\n     * references of result values are determined by the first array. The comparator\n     * is invoked with two arguments: (arrVal, othVal).\n     *\n     * **Note:** Unlike `_.pullAllWith`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {...Array} [values] The values to exclude.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n     *\n     * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);\n     * // => [{ 'x': 2, 'y': 1 }]\n     */\n    var differenceWith = baseRest(function(array, values) {\n      var comparator = last(values);\n      if (isArrayLikeObject(comparator)) {\n        comparator = undefined;\n      }\n      return isArrayLikeObject(array)\n        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)\n        : [];\n    });\n\n    /**\n     * Creates a slice of `array` with `n` elements dropped from the beginning.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.5.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=1] The number of elements to drop.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.drop([1, 2, 3]);\n     * // => [2, 3]\n     *\n     * _.drop([1, 2, 3], 2);\n     * // => [3]\n     *\n     * _.drop([1, 2, 3], 5);\n     * // => []\n     *\n     * _.drop([1, 2, 3], 0);\n     * // => [1, 2, 3]\n     */\n    function drop(array, n, guard) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return [];\n      }\n      n = (guard || n === undefined) ? 1 : toInteger(n);\n      return baseSlice(array, n < 0 ? 0 : n, length);\n    }\n\n    /**\n     * Creates a slice of `array` with `n` elements dropped from the end.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=1] The number of elements to drop.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.dropRight([1, 2, 3]);\n     * // => [1, 2]\n     *\n     * _.dropRight([1, 2, 3], 2);\n     * // => [1]\n     *\n     * _.dropRight([1, 2, 3], 5);\n     * // => []\n     *\n     * _.dropRight([1, 2, 3], 0);\n     * // => [1, 2, 3]\n     */\n    function dropRight(array, n, guard) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return [];\n      }\n      n = (guard || n === undefined) ? 1 : toInteger(n);\n      n = length - n;\n      return baseSlice(array, 0, n < 0 ? 0 : n);\n    }\n\n    /**\n     * Creates a slice of `array` excluding elements dropped from the end.\n     * Elements are dropped until `predicate` returns falsey. The predicate is\n     * invoked with three arguments: (value, index, array).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': true },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': false }\n     * ];\n     *\n     * _.dropRightWhile(users, function(o) { return !o.active; });\n     * // => objects for ['barney']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });\n     * // => objects for ['barney', 'fred']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.dropRightWhile(users, ['active', false]);\n     * // => objects for ['barney']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.dropRightWhile(users, 'active');\n     * // => objects for ['barney', 'fred', 'pebbles']\n     */\n    function dropRightWhile(array, predicate) {\n      return (array && array.length)\n        ? baseWhile(array, getIteratee(predicate, 3), true, true)\n        : [];\n    }\n\n    /**\n     * Creates a slice of `array` excluding elements dropped from the beginning.\n     * Elements are dropped until `predicate` returns falsey. The predicate is\n     * invoked with three arguments: (value, index, array).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': false },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': true }\n     * ];\n     *\n     * _.dropWhile(users, function(o) { return !o.active; });\n     * // => objects for ['pebbles']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.dropWhile(users, { 'user': 'barney', 'active': false });\n     * // => objects for ['fred', 'pebbles']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.dropWhile(users, ['active', false]);\n     * // => objects for ['pebbles']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.dropWhile(users, 'active');\n     * // => objects for ['barney', 'fred', 'pebbles']\n     */\n    function dropWhile(array, predicate) {\n      return (array && array.length)\n        ? baseWhile(array, getIteratee(predicate, 3), true)\n        : [];\n    }\n\n    /**\n     * Fills elements of `array` with `value` from `start` up to, but not\n     * including, `end`.\n     *\n     * **Note:** This method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.2.0\n     * @category Array\n     * @param {Array} array The array to fill.\n     * @param {*} value The value to fill `array` with.\n     * @param {number} [start=0] The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = [1, 2, 3];\n     *\n     * _.fill(array, 'a');\n     * console.log(array);\n     * // => ['a', 'a', 'a']\n     *\n     * _.fill(Array(3), 2);\n     * // => [2, 2, 2]\n     *\n     * _.fill([4, 6, 8, 10], '*', 1, 3);\n     * // => [4, '*', '*', 10]\n     */\n    function fill(array, value, start, end) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return [];\n      }\n      if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {\n        start = 0;\n        end = length;\n      }\n      return baseFill(array, value, start, end);\n    }\n\n    /**\n     * This method is like `_.find` except that it returns the index of the first\n     * element `predicate` returns truthy for instead of the element itself.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param {number} [fromIndex=0] The index to search from.\n     * @returns {number} Returns the index of the found element, else `-1`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': false },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': true }\n     * ];\n     *\n     * _.findIndex(users, function(o) { return o.user == 'barney'; });\n     * // => 0\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.findIndex(users, { 'user': 'fred', 'active': false });\n     * // => 1\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.findIndex(users, ['active', false]);\n     * // => 0\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.findIndex(users, 'active');\n     * // => 2\n     */\n    function findIndex(array, predicate, fromIndex) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return -1;\n      }\n      var index = fromIndex == null ? 0 : toInteger(fromIndex);\n      if (index < 0) {\n        index = nativeMax(length + index, 0);\n      }\n      return baseFindIndex(array, getIteratee(predicate, 3), index);\n    }\n\n    /**\n     * This method is like `_.findIndex` except that it iterates over elements\n     * of `collection` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param {number} [fromIndex=array.length-1] The index to search from.\n     * @returns {number} Returns the index of the found element, else `-1`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': true },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': false }\n     * ];\n     *\n     * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });\n     * // => 2\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.findLastIndex(users, { 'user': 'barney', 'active': true });\n     * // => 0\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.findLastIndex(users, ['active', false]);\n     * // => 2\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.findLastIndex(users, 'active');\n     * // => 0\n     */\n    function findLastIndex(array, predicate, fromIndex) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return -1;\n      }\n      var index = length - 1;\n      if (fromIndex !== undefined) {\n        index = toInteger(fromIndex);\n        index = fromIndex < 0\n          ? nativeMax(length + index, 0)\n          : nativeMin(index, length - 1);\n      }\n      return baseFindIndex(array, getIteratee(predicate, 3), index, true);\n    }\n\n    /**\n     * Flattens `array` a single level deep.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to flatten.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * _.flatten([1, [2, [3, [4]], 5]]);\n     * // => [1, 2, [3, [4]], 5]\n     */\n    function flatten(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? baseFlatten(array, 1) : [];\n    }\n\n    /**\n     * Recursively flattens `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to flatten.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * _.flattenDeep([1, [2, [3, [4]], 5]]);\n     * // => [1, 2, 3, 4, 5]\n     */\n    function flattenDeep(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? baseFlatten(array, INFINITY) : [];\n    }\n\n    /**\n     * Recursively flatten `array` up to `depth` times.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.4.0\n     * @category Array\n     * @param {Array} array The array to flatten.\n     * @param {number} [depth=1] The maximum recursion depth.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * var array = [1, [2, [3, [4]], 5]];\n     *\n     * _.flattenDepth(array, 1);\n     * // => [1, 2, [3, [4]], 5]\n     *\n     * _.flattenDepth(array, 2);\n     * // => [1, 2, 3, [4], 5]\n     */\n    function flattenDepth(array, depth) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return [];\n      }\n      depth = depth === undefined ? 1 : toInteger(depth);\n      return baseFlatten(array, depth);\n    }\n\n    /**\n     * The inverse of `_.toPairs`; this method returns an object composed\n     * from key-value `pairs`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} pairs The key-value pairs.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * _.fromPairs([['a', 1], ['b', 2]]);\n     * // => { 'a': 1, 'b': 2 }\n     */\n    function fromPairs(pairs) {\n      var index = -1,\n          length = pairs == null ? 0 : pairs.length,\n          result = {};\n\n      while (++index < length) {\n        var pair = pairs[index];\n        result[pair[0]] = pair[1];\n      }\n      return result;\n    }\n\n    /**\n     * Gets the first element of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @alias first\n     * @category Array\n     * @param {Array} array The array to query.\n     * @returns {*} Returns the first element of `array`.\n     * @example\n     *\n     * _.head([1, 2, 3]);\n     * // => 1\n     *\n     * _.head([]);\n     * // => undefined\n     */\n    function head(array) {\n      return (array && array.length) ? array[0] : undefined;\n    }\n\n    /**\n     * Gets the index at which the first occurrence of `value` is found in `array`\n     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons. If `fromIndex` is negative, it's used as the\n     * offset from the end of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {*} value The value to search for.\n     * @param {number} [fromIndex=0] The index to search from.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     * @example\n     *\n     * _.indexOf([1, 2, 1, 2], 2);\n     * // => 1\n     *\n     * // Search from the `fromIndex`.\n     * _.indexOf([1, 2, 1, 2], 2, 2);\n     * // => 3\n     */\n    function indexOf(array, value, fromIndex) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return -1;\n      }\n      var index = fromIndex == null ? 0 : toInteger(fromIndex);\n      if (index < 0) {\n        index = nativeMax(length + index, 0);\n      }\n      return baseIndexOf(array, value, index);\n    }\n\n    /**\n     * Gets all but the last element of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.initial([1, 2, 3]);\n     * // => [1, 2]\n     */\n    function initial(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? baseSlice(array, 0, -1) : [];\n    }\n\n    /**\n     * Creates an array of unique values that are included in all given arrays\n     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons. The order and references of result values are\n     * determined by the first array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @returns {Array} Returns the new array of intersecting values.\n     * @example\n     *\n     * _.intersection([2, 1], [2, 3]);\n     * // => [2]\n     */\n    var intersection = baseRest(function(arrays) {\n      var mapped = arrayMap(arrays, castArrayLikeObject);\n      return (mapped.length && mapped[0] === arrays[0])\n        ? baseIntersection(mapped)\n        : [];\n    });\n\n    /**\n     * This method is like `_.intersection` except that it accepts `iteratee`\n     * which is invoked for each element of each `arrays` to generate the criterion\n     * by which they're compared. The order and references of result values are\n     * determined by the first array. The iteratee is invoked with one argument:\n     * (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new array of intersecting values.\n     * @example\n     *\n     * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n     * // => [2.1]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n     * // => [{ 'x': 1 }]\n     */\n    var intersectionBy = baseRest(function(arrays) {\n      var iteratee = last(arrays),\n          mapped = arrayMap(arrays, castArrayLikeObject);\n\n      if (iteratee === last(mapped)) {\n        iteratee = undefined;\n      } else {\n        mapped.pop();\n      }\n      return (mapped.length && mapped[0] === arrays[0])\n        ? baseIntersection(mapped, getIteratee(iteratee, 2))\n        : [];\n    });\n\n    /**\n     * This method is like `_.intersection` except that it accepts `comparator`\n     * which is invoked to compare elements of `arrays`. The order and references\n     * of result values are determined by the first array. The comparator is\n     * invoked with two arguments: (arrVal, othVal).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of intersecting values.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n     *\n     * _.intersectionWith(objects, others, _.isEqual);\n     * // => [{ 'x': 1, 'y': 2 }]\n     */\n    var intersectionWith = baseRest(function(arrays) {\n      var comparator = last(arrays),\n          mapped = arrayMap(arrays, castArrayLikeObject);\n\n      comparator = typeof comparator == 'function' ? comparator : undefined;\n      if (comparator) {\n        mapped.pop();\n      }\n      return (mapped.length && mapped[0] === arrays[0])\n        ? baseIntersection(mapped, undefined, comparator)\n        : [];\n    });\n\n    /**\n     * Converts all elements in `array` into a string separated by `separator`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to convert.\n     * @param {string} [separator=','] The element separator.\n     * @returns {string} Returns the joined string.\n     * @example\n     *\n     * _.join(['a', 'b', 'c'], '~');\n     * // => 'a~b~c'\n     */\n    function join(array, separator) {\n      return array == null ? '' : nativeJoin.call(array, separator);\n    }\n\n    /**\n     * Gets the last element of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @returns {*} Returns the last element of `array`.\n     * @example\n     *\n     * _.last([1, 2, 3]);\n     * // => 3\n     */\n    function last(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? array[length - 1] : undefined;\n    }\n\n    /**\n     * This method is like `_.indexOf` except that it iterates over elements of\n     * `array` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {*} value The value to search for.\n     * @param {number} [fromIndex=array.length-1] The index to search from.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     * @example\n     *\n     * _.lastIndexOf([1, 2, 1, 2], 2);\n     * // => 3\n     *\n     * // Search from the `fromIndex`.\n     * _.lastIndexOf([1, 2, 1, 2], 2, 2);\n     * // => 1\n     */\n    function lastIndexOf(array, value, fromIndex) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return -1;\n      }\n      var index = length;\n      if (fromIndex !== undefined) {\n        index = toInteger(fromIndex);\n        index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);\n      }\n      return value === value\n        ? strictLastIndexOf(array, value, index)\n        : baseFindIndex(array, baseIsNaN, index, true);\n    }\n\n    /**\n     * Gets the element at index `n` of `array`. If `n` is negative, the nth\n     * element from the end is returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.11.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=0] The index of the element to return.\n     * @returns {*} Returns the nth element of `array`.\n     * @example\n     *\n     * var array = ['a', 'b', 'c', 'd'];\n     *\n     * _.nth(array, 1);\n     * // => 'b'\n     *\n     * _.nth(array, -2);\n     * // => 'c';\n     */\n    function nth(array, n) {\n      return (array && array.length) ? baseNth(array, toInteger(n)) : undefined;\n    }\n\n    /**\n     * Removes all given values from `array` using\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons.\n     *\n     * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`\n     * to remove elements from an array by predicate.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {...*} [values] The values to remove.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\n     *\n     * _.pull(array, 'a', 'c');\n     * console.log(array);\n     * // => ['b', 'b']\n     */\n    var pull = baseRest(pullAll);\n\n    /**\n     * This method is like `_.pull` except that it accepts an array of values to remove.\n     *\n     * **Note:** Unlike `_.difference`, this method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {Array} values The values to remove.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\n     *\n     * _.pullAll(array, ['a', 'c']);\n     * console.log(array);\n     * // => ['b', 'b']\n     */\n    function pullAll(array, values) {\n      return (array && array.length && values && values.length)\n        ? basePullAll(array, values)\n        : array;\n    }\n\n    /**\n     * This method is like `_.pullAll` except that it accepts `iteratee` which is\n     * invoked for each element of `array` and `values` to generate the criterion\n     * by which they're compared. The iteratee is invoked with one argument: (value).\n     *\n     * **Note:** Unlike `_.differenceBy`, this method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {Array} values The values to remove.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];\n     *\n     * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');\n     * console.log(array);\n     * // => [{ 'x': 2 }]\n     */\n    function pullAllBy(array, values, iteratee) {\n      return (array && array.length && values && values.length)\n        ? basePullAll(array, values, getIteratee(iteratee, 2))\n        : array;\n    }\n\n    /**\n     * This method is like `_.pullAll` except that it accepts `comparator` which\n     * is invoked to compare elements of `array` to `values`. The comparator is\n     * invoked with two arguments: (arrVal, othVal).\n     *\n     * **Note:** Unlike `_.differenceWith`, this method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.6.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {Array} values The values to remove.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];\n     *\n     * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);\n     * console.log(array);\n     * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]\n     */\n    function pullAllWith(array, values, comparator) {\n      return (array && array.length && values && values.length)\n        ? basePullAll(array, values, undefined, comparator)\n        : array;\n    }\n\n    /**\n     * Removes elements from `array` corresponding to `indexes` and returns an\n     * array of removed elements.\n     *\n     * **Note:** Unlike `_.at`, this method mutates `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {...(number|number[])} [indexes] The indexes of elements to remove.\n     * @returns {Array} Returns the new array of removed elements.\n     * @example\n     *\n     * var array = ['a', 'b', 'c', 'd'];\n     * var pulled = _.pullAt(array, [1, 3]);\n     *\n     * console.log(array);\n     * // => ['a', 'c']\n     *\n     * console.log(pulled);\n     * // => ['b', 'd']\n     */\n    var pullAt = flatRest(function(array, indexes) {\n      var length = array == null ? 0 : array.length,\n          result = baseAt(array, indexes);\n\n      basePullAt(array, arrayMap(indexes, function(index) {\n        return isIndex(index, length) ? +index : index;\n      }).sort(compareAscending));\n\n      return result;\n    });\n\n    /**\n     * Removes all elements from `array` that `predicate` returns truthy for\n     * and returns an array of the removed elements. The predicate is invoked\n     * with three arguments: (value, index, array).\n     *\n     * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`\n     * to pull elements from an array by value.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new array of removed elements.\n     * @example\n     *\n     * var array = [1, 2, 3, 4];\n     * var evens = _.remove(array, function(n) {\n     *   return n % 2 == 0;\n     * });\n     *\n     * console.log(array);\n     * // => [1, 3]\n     *\n     * console.log(evens);\n     * // => [2, 4]\n     */\n    function remove(array, predicate) {\n      var result = [];\n      if (!(array && array.length)) {\n        return result;\n      }\n      var index = -1,\n          indexes = [],\n          length = array.length;\n\n      predicate = getIteratee(predicate, 3);\n      while (++index < length) {\n        var value = array[index];\n        if (predicate(value, index, array)) {\n          result.push(value);\n          indexes.push(index);\n        }\n      }\n      basePullAt(array, indexes);\n      return result;\n    }\n\n    /**\n     * Reverses `array` so that the first element becomes the last, the second\n     * element becomes the second to last, and so on.\n     *\n     * **Note:** This method mutates `array` and is based on\n     * [`Array#reverse`](https://mdn.io/Array/reverse).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to modify.\n     * @returns {Array} Returns `array`.\n     * @example\n     *\n     * var array = [1, 2, 3];\n     *\n     * _.reverse(array);\n     * // => [3, 2, 1]\n     *\n     * console.log(array);\n     * // => [3, 2, 1]\n     */\n    function reverse(array) {\n      return array == null ? array : nativeReverse.call(array);\n    }\n\n    /**\n     * Creates a slice of `array` from `start` up to, but not including, `end`.\n     *\n     * **Note:** This method is used instead of\n     * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are\n     * returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to slice.\n     * @param {number} [start=0] The start position.\n     * @param {number} [end=array.length] The end position.\n     * @returns {Array} Returns the slice of `array`.\n     */\n    function slice(array, start, end) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return [];\n      }\n      if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {\n        start = 0;\n        end = length;\n      }\n      else {\n        start = start == null ? 0 : toInteger(start);\n        end = end === undefined ? length : toInteger(end);\n      }\n      return baseSlice(array, start, end);\n    }\n\n    /**\n     * Uses a binary search to determine the lowest index at which `value`\n     * should be inserted into `array` in order to maintain its sort order.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     * @example\n     *\n     * _.sortedIndex([30, 50], 40);\n     * // => 1\n     */\n    function sortedIndex(array, value) {\n      return baseSortedIndex(array, value);\n    }\n\n    /**\n     * This method is like `_.sortedIndex` except that it accepts `iteratee`\n     * which is invoked for `value` and each element of `array` to compute their\n     * sort ranking. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     * @example\n     *\n     * var objects = [{ 'x': 4 }, { 'x': 5 }];\n     *\n     * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n     * // => 0\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.sortedIndexBy(objects, { 'x': 4 }, 'x');\n     * // => 0\n     */\n    function sortedIndexBy(array, value, iteratee) {\n      return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));\n    }\n\n    /**\n     * This method is like `_.indexOf` except that it performs a binary\n     * search on a sorted `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {*} value The value to search for.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     * @example\n     *\n     * _.sortedIndexOf([4, 5, 5, 5, 6], 5);\n     * // => 1\n     */\n    function sortedIndexOf(array, value) {\n      var length = array == null ? 0 : array.length;\n      if (length) {\n        var index = baseSortedIndex(array, value);\n        if (index < length && eq(array[index], value)) {\n          return index;\n        }\n      }\n      return -1;\n    }\n\n    /**\n     * This method is like `_.sortedIndex` except that it returns the highest\n     * index at which `value` should be inserted into `array` in order to\n     * maintain its sort order.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     * @example\n     *\n     * _.sortedLastIndex([4, 5, 5, 5, 6], 5);\n     * // => 4\n     */\n    function sortedLastIndex(array, value) {\n      return baseSortedIndex(array, value, true);\n    }\n\n    /**\n     * This method is like `_.sortedLastIndex` except that it accepts `iteratee`\n     * which is invoked for `value` and each element of `array` to compute their\n     * sort ranking. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The sorted array to inspect.\n     * @param {*} value The value to evaluate.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {number} Returns the index at which `value` should be inserted\n     *  into `array`.\n     * @example\n     *\n     * var objects = [{ 'x': 4 }, { 'x': 5 }];\n     *\n     * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n     * // => 1\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');\n     * // => 1\n     */\n    function sortedLastIndexBy(array, value, iteratee) {\n      return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);\n    }\n\n    /**\n     * This method is like `_.lastIndexOf` except that it performs a binary\n     * search on a sorted `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {*} value The value to search for.\n     * @returns {number} Returns the index of the matched value, else `-1`.\n     * @example\n     *\n     * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);\n     * // => 3\n     */\n    function sortedLastIndexOf(array, value) {\n      var length = array == null ? 0 : array.length;\n      if (length) {\n        var index = baseSortedIndex(array, value, true) - 1;\n        if (eq(array[index], value)) {\n          return index;\n        }\n      }\n      return -1;\n    }\n\n    /**\n     * This method is like `_.uniq` except that it's designed and optimized\n     * for sorted arrays.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * _.sortedUniq([1, 1, 2]);\n     * // => [1, 2]\n     */\n    function sortedUniq(array) {\n      return (array && array.length)\n        ? baseSortedUniq(array)\n        : [];\n    }\n\n    /**\n     * This method is like `_.uniqBy` except that it's designed and optimized\n     * for sorted arrays.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [iteratee] The iteratee invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);\n     * // => [1.1, 2.3]\n     */\n    function sortedUniqBy(array, iteratee) {\n      return (array && array.length)\n        ? baseSortedUniq(array, getIteratee(iteratee, 2))\n        : [];\n    }\n\n    /**\n     * Gets all but the first element of `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.tail([1, 2, 3]);\n     * // => [2, 3]\n     */\n    function tail(array) {\n      var length = array == null ? 0 : array.length;\n      return length ? baseSlice(array, 1, length) : [];\n    }\n\n    /**\n     * Creates a slice of `array` with `n` elements taken from the beginning.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=1] The number of elements to take.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.take([1, 2, 3]);\n     * // => [1]\n     *\n     * _.take([1, 2, 3], 2);\n     * // => [1, 2]\n     *\n     * _.take([1, 2, 3], 5);\n     * // => [1, 2, 3]\n     *\n     * _.take([1, 2, 3], 0);\n     * // => []\n     */\n    function take(array, n, guard) {\n      if (!(array && array.length)) {\n        return [];\n      }\n      n = (guard || n === undefined) ? 1 : toInteger(n);\n      return baseSlice(array, 0, n < 0 ? 0 : n);\n    }\n\n    /**\n     * Creates a slice of `array` with `n` elements taken from the end.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {number} [n=1] The number of elements to take.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * _.takeRight([1, 2, 3]);\n     * // => [3]\n     *\n     * _.takeRight([1, 2, 3], 2);\n     * // => [2, 3]\n     *\n     * _.takeRight([1, 2, 3], 5);\n     * // => [1, 2, 3]\n     *\n     * _.takeRight([1, 2, 3], 0);\n     * // => []\n     */\n    function takeRight(array, n, guard) {\n      var length = array == null ? 0 : array.length;\n      if (!length) {\n        return [];\n      }\n      n = (guard || n === undefined) ? 1 : toInteger(n);\n      n = length - n;\n      return baseSlice(array, n < 0 ? 0 : n, length);\n    }\n\n    /**\n     * Creates a slice of `array` with elements taken from the end. Elements are\n     * taken until `predicate` returns falsey. The predicate is invoked with\n     * three arguments: (value, index, array).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': true },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': false }\n     * ];\n     *\n     * _.takeRightWhile(users, function(o) { return !o.active; });\n     * // => objects for ['fred', 'pebbles']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });\n     * // => objects for ['pebbles']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.takeRightWhile(users, ['active', false]);\n     * // => objects for ['fred', 'pebbles']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.takeRightWhile(users, 'active');\n     * // => []\n     */\n    function takeRightWhile(array, predicate) {\n      return (array && array.length)\n        ? baseWhile(array, getIteratee(predicate, 3), false, true)\n        : [];\n    }\n\n    /**\n     * Creates a slice of `array` with elements taken from the beginning. Elements\n     * are taken until `predicate` returns falsey. The predicate is invoked with\n     * three arguments: (value, index, array).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Array\n     * @param {Array} array The array to query.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the slice of `array`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'active': false },\n     *   { 'user': 'fred',    'active': false },\n     *   { 'user': 'pebbles', 'active': true }\n     * ];\n     *\n     * _.takeWhile(users, function(o) { return !o.active; });\n     * // => objects for ['barney', 'fred']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.takeWhile(users, { 'user': 'barney', 'active': false });\n     * // => objects for ['barney']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.takeWhile(users, ['active', false]);\n     * // => objects for ['barney', 'fred']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.takeWhile(users, 'active');\n     * // => []\n     */\n    function takeWhile(array, predicate) {\n      return (array && array.length)\n        ? baseWhile(array, getIteratee(predicate, 3))\n        : [];\n    }\n\n    /**\n     * Creates an array of unique values, in order, from all given arrays using\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @returns {Array} Returns the new array of combined values.\n     * @example\n     *\n     * _.union([2], [1, 2]);\n     * // => [2, 1]\n     */\n    var union = baseRest(function(arrays) {\n      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));\n    });\n\n    /**\n     * This method is like `_.union` except that it accepts `iteratee` which is\n     * invoked for each element of each `arrays` to generate the criterion by\n     * which uniqueness is computed. Result values are chosen from the first\n     * array in which the value occurs. The iteratee is invoked with one argument:\n     * (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new array of combined values.\n     * @example\n     *\n     * _.unionBy([2.1], [1.2, 2.3], Math.floor);\n     * // => [2.1, 1.2]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n     * // => [{ 'x': 1 }, { 'x': 2 }]\n     */\n    var unionBy = baseRest(function(arrays) {\n      var iteratee = last(arrays);\n      if (isArrayLikeObject(iteratee)) {\n        iteratee = undefined;\n      }\n      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));\n    });\n\n    /**\n     * This method is like `_.union` except that it accepts `comparator` which\n     * is invoked to compare elements of `arrays`. Result values are chosen from\n     * the first array in which the value occurs. The comparator is invoked\n     * with two arguments: (arrVal, othVal).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of combined values.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n     *\n     * _.unionWith(objects, others, _.isEqual);\n     * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n     */\n    var unionWith = baseRest(function(arrays) {\n      var comparator = last(arrays);\n      comparator = typeof comparator == 'function' ? comparator : undefined;\n      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);\n    });\n\n    /**\n     * Creates a duplicate-free version of an array, using\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons, in which only the first occurrence of each element\n     * is kept. The order of result values is determined by the order they occur\n     * in the array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * _.uniq([2, 1, 2]);\n     * // => [2, 1]\n     */\n    function uniq(array) {\n      return (array && array.length) ? baseUniq(array) : [];\n    }\n\n    /**\n     * This method is like `_.uniq` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the criterion by which\n     * uniqueness is computed. The order of result values is determined by the\n     * order they occur in the array. The iteratee is invoked with one argument:\n     * (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * _.uniqBy([2.1, 1.2, 2.3], Math.floor);\n     * // => [2.1, 1.2]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');\n     * // => [{ 'x': 1 }, { 'x': 2 }]\n     */\n    function uniqBy(array, iteratee) {\n      return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : [];\n    }\n\n    /**\n     * This method is like `_.uniq` except that it accepts `comparator` which\n     * is invoked to compare elements of `array`. The order of result values is\n     * determined by the order they occur in the array.The comparator is invoked\n     * with two arguments: (arrVal, othVal).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new duplicate free array.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];\n     *\n     * _.uniqWith(objects, _.isEqual);\n     * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]\n     */\n    function uniqWith(array, comparator) {\n      comparator = typeof comparator == 'function' ? comparator : undefined;\n      return (array && array.length) ? baseUniq(array, undefined, comparator) : [];\n    }\n\n    /**\n     * This method is like `_.zip` except that it accepts an array of grouped\n     * elements and creates an array regrouping the elements to their pre-zip\n     * configuration.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.2.0\n     * @category Array\n     * @param {Array} array The array of grouped elements to process.\n     * @returns {Array} Returns the new array of regrouped elements.\n     * @example\n     *\n     * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);\n     * // => [['a', 1, true], ['b', 2, false]]\n     *\n     * _.unzip(zipped);\n     * // => [['a', 'b'], [1, 2], [true, false]]\n     */\n    function unzip(array) {\n      if (!(array && array.length)) {\n        return [];\n      }\n      var length = 0;\n      array = arrayFilter(array, function(group) {\n        if (isArrayLikeObject(group)) {\n          length = nativeMax(group.length, length);\n          return true;\n        }\n      });\n      return baseTimes(length, function(index) {\n        return arrayMap(array, baseProperty(index));\n      });\n    }\n\n    /**\n     * This method is like `_.unzip` except that it accepts `iteratee` to specify\n     * how regrouped values should be combined. The iteratee is invoked with the\n     * elements of each group: (...group).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.8.0\n     * @category Array\n     * @param {Array} array The array of grouped elements to process.\n     * @param {Function} [iteratee=_.identity] The function to combine\n     *  regrouped values.\n     * @returns {Array} Returns the new array of regrouped elements.\n     * @example\n     *\n     * var zipped = _.zip([1, 2], [10, 20], [100, 200]);\n     * // => [[1, 10, 100], [2, 20, 200]]\n     *\n     * _.unzipWith(zipped, _.add);\n     * // => [3, 30, 300]\n     */\n    function unzipWith(array, iteratee) {\n      if (!(array && array.length)) {\n        return [];\n      }\n      var result = unzip(array);\n      if (iteratee == null) {\n        return result;\n      }\n      return arrayMap(result, function(group) {\n        return apply(iteratee, undefined, group);\n      });\n    }\n\n    /**\n     * Creates an array excluding all given values using\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * for equality comparisons.\n     *\n     * **Note:** Unlike `_.pull`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {Array} array The array to inspect.\n     * @param {...*} [values] The values to exclude.\n     * @returns {Array} Returns the new array of filtered values.\n     * @see _.difference, _.xor\n     * @example\n     *\n     * _.without([2, 1, 2, 3], 1, 2);\n     * // => [3]\n     */\n    var without = baseRest(function(array, values) {\n      return isArrayLikeObject(array)\n        ? baseDifference(array, values)\n        : [];\n    });\n\n    /**\n     * Creates an array of unique values that is the\n     * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)\n     * of the given arrays. The order of result values is determined by the order\n     * they occur in the arrays.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @returns {Array} Returns the new array of filtered values.\n     * @see _.difference, _.without\n     * @example\n     *\n     * _.xor([2, 1], [2, 3]);\n     * // => [1, 3]\n     */\n    var xor = baseRest(function(arrays) {\n      return baseXor(arrayFilter(arrays, isArrayLikeObject));\n    });\n\n    /**\n     * This method is like `_.xor` except that it accepts `iteratee` which is\n     * invoked for each element of each `arrays` to generate the criterion by\n     * which by which they're compared. The order of result values is determined\n     * by the order they occur in the arrays. The iteratee is invoked with one\n     * argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n     * // => [1.2, 3.4]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n     * // => [{ 'x': 2 }]\n     */\n    var xorBy = baseRest(function(arrays) {\n      var iteratee = last(arrays);\n      if (isArrayLikeObject(iteratee)) {\n        iteratee = undefined;\n      }\n      return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));\n    });\n\n    /**\n     * This method is like `_.xor` except that it accepts `comparator` which is\n     * invoked to compare elements of `arrays`. The order of result values is\n     * determined by the order they occur in the arrays. The comparator is invoked\n     * with two arguments: (arrVal, othVal).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to inspect.\n     * @param {Function} [comparator] The comparator invoked per element.\n     * @returns {Array} Returns the new array of filtered values.\n     * @example\n     *\n     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n     *\n     * _.xorWith(objects, others, _.isEqual);\n     * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n     */\n    var xorWith = baseRest(function(arrays) {\n      var comparator = last(arrays);\n      comparator = typeof comparator == 'function' ? comparator : undefined;\n      return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);\n    });\n\n    /**\n     * Creates an array of grouped elements, the first of which contains the\n     * first elements of the given arrays, the second of which contains the\n     * second elements of the given arrays, and so on.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to process.\n     * @returns {Array} Returns the new array of grouped elements.\n     * @example\n     *\n     * _.zip(['a', 'b'], [1, 2], [true, false]);\n     * // => [['a', 1, true], ['b', 2, false]]\n     */\n    var zip = baseRest(unzip);\n\n    /**\n     * This method is like `_.fromPairs` except that it accepts two arrays,\n     * one of property identifiers and one of corresponding values.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.4.0\n     * @category Array\n     * @param {Array} [props=[]] The property identifiers.\n     * @param {Array} [values=[]] The property values.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * _.zipObject(['a', 'b'], [1, 2]);\n     * // => { 'a': 1, 'b': 2 }\n     */\n    function zipObject(props, values) {\n      return baseZipObject(props || [], values || [], assignValue);\n    }\n\n    /**\n     * This method is like `_.zipObject` except that it supports property paths.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.1.0\n     * @category Array\n     * @param {Array} [props=[]] The property identifiers.\n     * @param {Array} [values=[]] The property values.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);\n     * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }\n     */\n    function zipObjectDeep(props, values) {\n      return baseZipObject(props || [], values || [], baseSet);\n    }\n\n    /**\n     * This method is like `_.zip` except that it accepts `iteratee` to specify\n     * how grouped values should be combined. The iteratee is invoked with the\n     * elements of each group: (...group).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.8.0\n     * @category Array\n     * @param {...Array} [arrays] The arrays to process.\n     * @param {Function} [iteratee=_.identity] The function to combine\n     *  grouped values.\n     * @returns {Array} Returns the new array of grouped elements.\n     * @example\n     *\n     * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {\n     *   return a + b + c;\n     * });\n     * // => [111, 222]\n     */\n    var zipWith = baseRest(function(arrays) {\n      var length = arrays.length,\n          iteratee = length > 1 ? arrays[length - 1] : undefined;\n\n      iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;\n      return unzipWith(arrays, iteratee);\n    });\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates a `lodash` wrapper instance that wraps `value` with explicit method\n     * chain sequences enabled. The result of such sequences must be unwrapped\n     * with `_#value`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.3.0\n     * @category Seq\n     * @param {*} value The value to wrap.\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'age': 36 },\n     *   { 'user': 'fred',    'age': 40 },\n     *   { 'user': 'pebbles', 'age': 1 }\n     * ];\n     *\n     * var youngest = _\n     *   .chain(users)\n     *   .sortBy('age')\n     *   .map(function(o) {\n     *     return o.user + ' is ' + o.age;\n     *   })\n     *   .head()\n     *   .value();\n     * // => 'pebbles is 1'\n     */\n    function chain(value) {\n      var result = lodash(value);\n      result.__chain__ = true;\n      return result;\n    }\n\n    /**\n     * This method invokes `interceptor` and returns `value`. The interceptor\n     * is invoked with one argument; (value). The purpose of this method is to\n     * \"tap into\" a method chain sequence in order to modify intermediate results.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Seq\n     * @param {*} value The value to provide to `interceptor`.\n     * @param {Function} interceptor The function to invoke.\n     * @returns {*} Returns `value`.\n     * @example\n     *\n     * _([1, 2, 3])\n     *  .tap(function(array) {\n     *    // Mutate input array.\n     *    array.pop();\n     *  })\n     *  .reverse()\n     *  .value();\n     * // => [2, 1]\n     */\n    function tap(value, interceptor) {\n      interceptor(value);\n      return value;\n    }\n\n    /**\n     * This method is like `_.tap` except that it returns the result of `interceptor`.\n     * The purpose of this method is to \"pass thru\" values replacing intermediate\n     * results in a method chain sequence.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Seq\n     * @param {*} value The value to provide to `interceptor`.\n     * @param {Function} interceptor The function to invoke.\n     * @returns {*} Returns the result of `interceptor`.\n     * @example\n     *\n     * _('  abc  ')\n     *  .chain()\n     *  .trim()\n     *  .thru(function(value) {\n     *    return [value];\n     *  })\n     *  .value();\n     * // => ['abc']\n     */\n    function thru(value, interceptor) {\n      return interceptor(value);\n    }\n\n    /**\n     * This method is the wrapper version of `_.at`.\n     *\n     * @name at\n     * @memberOf _\n     * @since 1.0.0\n     * @category Seq\n     * @param {...(string|string[])} [paths] The property paths to pick.\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\n     *\n     * _(object).at(['a[0].b.c', 'a[1]']).value();\n     * // => [3, 4]\n     */\n    var wrapperAt = flatRest(function(paths) {\n      var length = paths.length,\n          start = length ? paths[0] : 0,\n          value = this.__wrapped__,\n          interceptor = function(object) { return baseAt(object, paths); };\n\n      if (length > 1 || this.__actions__.length ||\n          !(value instanceof LazyWrapper) || !isIndex(start)) {\n        return this.thru(interceptor);\n      }\n      value = value.slice(start, +start + (length ? 1 : 0));\n      value.__actions__.push({\n        'func': thru,\n        'args': [interceptor],\n        'thisArg': undefined\n      });\n      return new LodashWrapper(value, this.__chain__).thru(function(array) {\n        if (length && !array.length) {\n          array.push(undefined);\n        }\n        return array;\n      });\n    });\n\n    /**\n     * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.\n     *\n     * @name chain\n     * @memberOf _\n     * @since 0.1.0\n     * @category Seq\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36 },\n     *   { 'user': 'fred',   'age': 40 }\n     * ];\n     *\n     * // A sequence without explicit chaining.\n     * _(users).head();\n     * // => { 'user': 'barney', 'age': 36 }\n     *\n     * // A sequence with explicit chaining.\n     * _(users)\n     *   .chain()\n     *   .head()\n     *   .pick('user')\n     *   .value();\n     * // => { 'user': 'barney' }\n     */\n    function wrapperChain() {\n      return chain(this);\n    }\n\n    /**\n     * Executes the chain sequence and returns the wrapped result.\n     *\n     * @name commit\n     * @memberOf _\n     * @since 3.2.0\n     * @category Seq\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var array = [1, 2];\n     * var wrapped = _(array).push(3);\n     *\n     * console.log(array);\n     * // => [1, 2]\n     *\n     * wrapped = wrapped.commit();\n     * console.log(array);\n     * // => [1, 2, 3]\n     *\n     * wrapped.last();\n     * // => 3\n     *\n     * console.log(array);\n     * // => [1, 2, 3]\n     */\n    function wrapperCommit() {\n      return new LodashWrapper(this.value(), this.__chain__);\n    }\n\n    /**\n     * Gets the next value on a wrapped object following the\n     * [iterator protocol](https://mdn.io/iteration_protocols#iterator).\n     *\n     * @name next\n     * @memberOf _\n     * @since 4.0.0\n     * @category Seq\n     * @returns {Object} Returns the next iterator value.\n     * @example\n     *\n     * var wrapped = _([1, 2]);\n     *\n     * wrapped.next();\n     * // => { 'done': false, 'value': 1 }\n     *\n     * wrapped.next();\n     * // => { 'done': false, 'value': 2 }\n     *\n     * wrapped.next();\n     * // => { 'done': true, 'value': undefined }\n     */\n    function wrapperNext() {\n      if (this.__values__ === undefined) {\n        this.__values__ = toArray(this.value());\n      }\n      var done = this.__index__ >= this.__values__.length,\n          value = done ? undefined : this.__values__[this.__index__++];\n\n      return { 'done': done, 'value': value };\n    }\n\n    /**\n     * Enables the wrapper to be iterable.\n     *\n     * @name Symbol.iterator\n     * @memberOf _\n     * @since 4.0.0\n     * @category Seq\n     * @returns {Object} Returns the wrapper object.\n     * @example\n     *\n     * var wrapped = _([1, 2]);\n     *\n     * wrapped[Symbol.iterator]() === wrapped;\n     * // => true\n     *\n     * Array.from(wrapped);\n     * // => [1, 2]\n     */\n    function wrapperToIterator() {\n      return this;\n    }\n\n    /**\n     * Creates a clone of the chain sequence planting `value` as the wrapped value.\n     *\n     * @name plant\n     * @memberOf _\n     * @since 3.2.0\n     * @category Seq\n     * @param {*} value The value to plant.\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var wrapped = _([1, 2]).map(square);\n     * var other = wrapped.plant([3, 4]);\n     *\n     * other.value();\n     * // => [9, 16]\n     *\n     * wrapped.value();\n     * // => [1, 4]\n     */\n    function wrapperPlant(value) {\n      var result,\n          parent = this;\n\n      while (parent instanceof baseLodash) {\n        var clone = wrapperClone(parent);\n        clone.__index__ = 0;\n        clone.__values__ = undefined;\n        if (result) {\n          previous.__wrapped__ = clone;\n        } else {\n          result = clone;\n        }\n        var previous = clone;\n        parent = parent.__wrapped__;\n      }\n      previous.__wrapped__ = value;\n      return result;\n    }\n\n    /**\n     * This method is the wrapper version of `_.reverse`.\n     *\n     * **Note:** This method mutates the wrapped array.\n     *\n     * @name reverse\n     * @memberOf _\n     * @since 0.1.0\n     * @category Seq\n     * @returns {Object} Returns the new `lodash` wrapper instance.\n     * @example\n     *\n     * var array = [1, 2, 3];\n     *\n     * _(array).reverse().value()\n     * // => [3, 2, 1]\n     *\n     * console.log(array);\n     * // => [3, 2, 1]\n     */\n    function wrapperReverse() {\n      var value = this.__wrapped__;\n      if (value instanceof LazyWrapper) {\n        var wrapped = value;\n        if (this.__actions__.length) {\n          wrapped = new LazyWrapper(this);\n        }\n        wrapped = wrapped.reverse();\n        wrapped.__actions__.push({\n          'func': thru,\n          'args': [reverse],\n          'thisArg': undefined\n        });\n        return new LodashWrapper(wrapped, this.__chain__);\n      }\n      return this.thru(reverse);\n    }\n\n    /**\n     * Executes the chain sequence to resolve the unwrapped value.\n     *\n     * @name value\n     * @memberOf _\n     * @since 0.1.0\n     * @alias toJSON, valueOf\n     * @category Seq\n     * @returns {*} Returns the resolved unwrapped value.\n     * @example\n     *\n     * _([1, 2, 3]).value();\n     * // => [1, 2, 3]\n     */\n    function wrapperValue() {\n      return baseWrapperValue(this.__wrapped__, this.__actions__);\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Creates an object composed of keys generated from the results of running\n     * each element of `collection` thru `iteratee`. The corresponding value of\n     * each key is the number of times the key was returned by `iteratee`. The\n     * iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.5.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n     * @returns {Object} Returns the composed aggregate object.\n     * @example\n     *\n     * _.countBy([6.1, 4.2, 6.3], Math.floor);\n     * // => { '4': 1, '6': 2 }\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.countBy(['one', 'two', 'three'], 'length');\n     * // => { '3': 2, '5': 1 }\n     */\n    var countBy = createAggregator(function(result, value, key) {\n      if (hasOwnProperty.call(result, key)) {\n        ++result[key];\n      } else {\n        baseAssignValue(result, key, 1);\n      }\n    });\n\n    /**\n     * Checks if `predicate` returns truthy for **all** elements of `collection`.\n     * Iteration is stopped once `predicate` returns falsey. The predicate is\n     * invoked with three arguments: (value, index|key, collection).\n     *\n     * **Note:** This method returns `true` for\n     * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because\n     * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of\n     * elements of empty collections.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {boolean} Returns `true` if all elements pass the predicate check,\n     *  else `false`.\n     * @example\n     *\n     * _.every([true, 1, null, 'yes'], Boolean);\n     * // => false\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36, 'active': false },\n     *   { 'user': 'fred',   'age': 40, 'active': false }\n     * ];\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.every(users, { 'user': 'barney', 'active': false });\n     * // => false\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.every(users, ['active', false]);\n     * // => true\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.every(users, 'active');\n     * // => false\n     */\n    function every(collection, predicate, guard) {\n      var func = isArray(collection) ? arrayEvery : baseEvery;\n      if (guard && isIterateeCall(collection, predicate, guard)) {\n        predicate = undefined;\n      }\n      return func(collection, getIteratee(predicate, 3));\n    }\n\n    /**\n     * Iterates over elements of `collection`, returning an array of all elements\n     * `predicate` returns truthy for. The predicate is invoked with three\n     * arguments: (value, index|key, collection).\n     *\n     * **Note:** Unlike `_.remove`, this method returns a new array.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new filtered array.\n     * @see _.reject\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36, 'active': true },\n     *   { 'user': 'fred',   'age': 40, 'active': false }\n     * ];\n     *\n     * _.filter(users, function(o) { return !o.active; });\n     * // => objects for ['fred']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.filter(users, { 'age': 36, 'active': true });\n     * // => objects for ['barney']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.filter(users, ['active', false]);\n     * // => objects for ['fred']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.filter(users, 'active');\n     * // => objects for ['barney']\n     */\n    function filter(collection, predicate) {\n      var func = isArray(collection) ? arrayFilter : baseFilter;\n      return func(collection, getIteratee(predicate, 3));\n    }\n\n    /**\n     * Iterates over elements of `collection`, returning the first element\n     * `predicate` returns truthy for. The predicate is invoked with three\n     * arguments: (value, index|key, collection).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param {number} [fromIndex=0] The index to search from.\n     * @returns {*} Returns the matched element, else `undefined`.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'age': 36, 'active': true },\n     *   { 'user': 'fred',    'age': 40, 'active': false },\n     *   { 'user': 'pebbles', 'age': 1,  'active': true }\n     * ];\n     *\n     * _.find(users, function(o) { return o.age < 40; });\n     * // => object for 'barney'\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.find(users, { 'age': 1, 'active': true });\n     * // => object for 'pebbles'\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.find(users, ['active', false]);\n     * // => object for 'fred'\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.find(users, 'active');\n     * // => object for 'barney'\n     */\n    var find = createFind(findIndex);\n\n    /**\n     * This method is like `_.find` except that it iterates over elements of\n     * `collection` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param {number} [fromIndex=collection.length-1] The index to search from.\n     * @returns {*} Returns the matched element, else `undefined`.\n     * @example\n     *\n     * _.findLast([1, 2, 3, 4], function(n) {\n     *   return n % 2 == 1;\n     * });\n     * // => 3\n     */\n    var findLast = createFind(findLastIndex);\n\n    /**\n     * Creates a flattened array of values by running each element in `collection`\n     * thru `iteratee` and flattening the mapped results. The iteratee is invoked\n     * with three arguments: (value, index|key, collection).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * function duplicate(n) {\n     *   return [n, n];\n     * }\n     *\n     * _.flatMap([1, 2], duplicate);\n     * // => [1, 1, 2, 2]\n     */\n    function flatMap(collection, iteratee) {\n      return baseFlatten(map(collection, iteratee), 1);\n    }\n\n    /**\n     * This method is like `_.flatMap` except that it recursively flattens the\n     * mapped results.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * function duplicate(n) {\n     *   return [[[n, n]]];\n     * }\n     *\n     * _.flatMapDeep([1, 2], duplicate);\n     * // => [1, 1, 2, 2]\n     */\n    function flatMapDeep(collection, iteratee) {\n      return baseFlatten(map(collection, iteratee), INFINITY);\n    }\n\n    /**\n     * This method is like `_.flatMap` except that it recursively flattens the\n     * mapped results up to `depth` times.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @param {number} [depth=1] The maximum recursion depth.\n     * @returns {Array} Returns the new flattened array.\n     * @example\n     *\n     * function duplicate(n) {\n     *   return [[[n, n]]];\n     * }\n     *\n     * _.flatMapDepth([1, 2], duplicate, 2);\n     * // => [[1, 1], [2, 2]]\n     */\n    function flatMapDepth(collection, iteratee, depth) {\n      depth = depth === undefined ? 1 : toInteger(depth);\n      return baseFlatten(map(collection, iteratee), depth);\n    }\n\n    /**\n     * Iterates over elements of `collection` and invokes `iteratee` for each element.\n     * The iteratee is invoked with three arguments: (value, index|key, collection).\n     * Iteratee functions may exit iteration early by explicitly returning `false`.\n     *\n     * **Note:** As with other \"Collections\" methods, objects with a \"length\"\n     * property are iterated like arrays. To avoid this behavior use `_.forIn`\n     * or `_.forOwn` for object iteration.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @alias each\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array|Object} Returns `collection`.\n     * @see _.forEachRight\n     * @example\n     *\n     * _.forEach([1, 2], function(value) {\n     *   console.log(value);\n     * });\n     * // => Logs `1` then `2`.\n     *\n     * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'a' then 'b' (iteration order is not guaranteed).\n     */\n    function forEach(collection, iteratee) {\n      var func = isArray(collection) ? arrayEach : baseEach;\n      return func(collection, getIteratee(iteratee, 3));\n    }\n\n    /**\n     * This method is like `_.forEach` except that it iterates over elements of\n     * `collection` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @alias eachRight\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array|Object} Returns `collection`.\n     * @see _.forEach\n     * @example\n     *\n     * _.forEachRight([1, 2], function(value) {\n     *   console.log(value);\n     * });\n     * // => Logs `2` then `1`.\n     */\n    function forEachRight(collection, iteratee) {\n      var func = isArray(collection) ? arrayEachRight : baseEachRight;\n      return func(collection, getIteratee(iteratee, 3));\n    }\n\n    /**\n     * Creates an object composed of keys generated from the results of running\n     * each element of `collection` thru `iteratee`. The order of grouped values\n     * is determined by the order they occur in `collection`. The corresponding\n     * value of each key is an array of elements responsible for generating the\n     * key. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n     * @returns {Object} Returns the composed aggregate object.\n     * @example\n     *\n     * _.groupBy([6.1, 4.2, 6.3], Math.floor);\n     * // => { '4': [4.2], '6': [6.1, 6.3] }\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.groupBy(['one', 'two', 'three'], 'length');\n     * // => { '3': ['one', 'two'], '5': ['three'] }\n     */\n    var groupBy = createAggregator(function(result, value, key) {\n      if (hasOwnProperty.call(result, key)) {\n        result[key].push(value);\n      } else {\n        baseAssignValue(result, key, [value]);\n      }\n    });\n\n    /**\n     * Checks if `value` is in `collection`. If `collection` is a string, it's\n     * checked for a substring of `value`, otherwise\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * is used for equality comparisons. If `fromIndex` is negative, it's used as\n     * the offset from the end of `collection`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object|string} collection The collection to inspect.\n     * @param {*} value The value to search for.\n     * @param {number} [fromIndex=0] The index to search from.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\n     * @returns {boolean} Returns `true` if `value` is found, else `false`.\n     * @example\n     *\n     * _.includes([1, 2, 3], 1);\n     * // => true\n     *\n     * _.includes([1, 2, 3], 1, 2);\n     * // => false\n     *\n     * _.includes({ 'a': 1, 'b': 2 }, 1);\n     * // => true\n     *\n     * _.includes('abcd', 'bc');\n     * // => true\n     */\n    function includes(collection, value, fromIndex, guard) {\n      collection = isArrayLike(collection) ? collection : values(collection);\n      fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;\n\n      var length = collection.length;\n      if (fromIndex < 0) {\n        fromIndex = nativeMax(length + fromIndex, 0);\n      }\n      return isString(collection)\n        ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)\n        : (!!length && baseIndexOf(collection, value, fromIndex) > -1);\n    }\n\n    /**\n     * Invokes the method at `path` of each element in `collection`, returning\n     * an array of the results of each invoked method. Any additional arguments\n     * are provided to each invoked method. If `path` is a function, it's invoked\n     * for, and `this` bound to, each element in `collection`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Array|Function|string} path The path of the method to invoke or\n     *  the function invoked per iteration.\n     * @param {...*} [args] The arguments to invoke each method with.\n     * @returns {Array} Returns the array of results.\n     * @example\n     *\n     * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');\n     * // => [[1, 5, 7], [1, 2, 3]]\n     *\n     * _.invokeMap([123, 456], String.prototype.split, '');\n     * // => [['1', '2', '3'], ['4', '5', '6']]\n     */\n    var invokeMap = baseRest(function(collection, path, args) {\n      var index = -1,\n          isFunc = typeof path == 'function',\n          result = isArrayLike(collection) ? Array(collection.length) : [];\n\n      baseEach(collection, function(value) {\n        result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);\n      });\n      return result;\n    });\n\n    /**\n     * Creates an object composed of keys generated from the results of running\n     * each element of `collection` thru `iteratee`. The corresponding value of\n     * each key is the last element responsible for generating the key. The\n     * iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n     * @returns {Object} Returns the composed aggregate object.\n     * @example\n     *\n     * var array = [\n     *   { 'dir': 'left', 'code': 97 },\n     *   { 'dir': 'right', 'code': 100 }\n     * ];\n     *\n     * _.keyBy(array, function(o) {\n     *   return String.fromCharCode(o.code);\n     * });\n     * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }\n     *\n     * _.keyBy(array, 'dir');\n     * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }\n     */\n    var keyBy = createAggregator(function(result, value, key) {\n      baseAssignValue(result, key, value);\n    });\n\n    /**\n     * Creates an array of values by running each element in `collection` thru\n     * `iteratee`. The iteratee is invoked with three arguments:\n     * (value, index|key, collection).\n     *\n     * Many lodash methods are guarded to work as iteratees for methods like\n     * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.\n     *\n     * The guarded methods are:\n     * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,\n     * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,\n     * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,\n     * `template`, `trim`, `trimEnd`, `trimStart`, and `words`\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new mapped array.\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * _.map([4, 8], square);\n     * // => [16, 64]\n     *\n     * _.map({ 'a': 4, 'b': 8 }, square);\n     * // => [16, 64] (iteration order is not guaranteed)\n     *\n     * var users = [\n     *   { 'user': 'barney' },\n     *   { 'user': 'fred' }\n     * ];\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.map(users, 'user');\n     * // => ['barney', 'fred']\n     */\n    function map(collection, iteratee) {\n      var func = isArray(collection) ? arrayMap : baseMap;\n      return func(collection, getIteratee(iteratee, 3));\n    }\n\n    /**\n     * This method is like `_.sortBy` except that it allows specifying the sort\n     * orders of the iteratees to sort by. If `orders` is unspecified, all values\n     * are sorted in ascending order. Otherwise, specify an order of \"desc\" for\n     * descending or \"asc\" for ascending sort order of corresponding values.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]\n     *  The iteratees to sort by.\n     * @param {string[]} [orders] The sort orders of `iteratees`.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\n     * @returns {Array} Returns the new sorted array.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'fred',   'age': 48 },\n     *   { 'user': 'barney', 'age': 34 },\n     *   { 'user': 'fred',   'age': 40 },\n     *   { 'user': 'barney', 'age': 36 }\n     * ];\n     *\n     * // Sort by `user` in ascending order and by `age` in descending order.\n     * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);\n     * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]\n     */\n    function orderBy(collection, iteratees, orders, guard) {\n      if (collection == null) {\n        return [];\n      }\n      if (!isArray(iteratees)) {\n        iteratees = iteratees == null ? [] : [iteratees];\n      }\n      orders = guard ? undefined : orders;\n      if (!isArray(orders)) {\n        orders = orders == null ? [] : [orders];\n      }\n      return baseOrderBy(collection, iteratees, orders);\n    }\n\n    /**\n     * Creates an array of elements split into two groups, the first of which\n     * contains elements `predicate` returns truthy for, the second of which\n     * contains elements `predicate` returns falsey for. The predicate is\n     * invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the array of grouped elements.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney',  'age': 36, 'active': false },\n     *   { 'user': 'fred',    'age': 40, 'active': true },\n     *   { 'user': 'pebbles', 'age': 1,  'active': false }\n     * ];\n     *\n     * _.partition(users, function(o) { return o.active; });\n     * // => objects for [['fred'], ['barney', 'pebbles']]\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.partition(users, { 'age': 1, 'active': false });\n     * // => objects for [['pebbles'], ['barney', 'fred']]\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.partition(users, ['active', false]);\n     * // => objects for [['barney', 'pebbles'], ['fred']]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.partition(users, 'active');\n     * // => objects for [['fred'], ['barney', 'pebbles']]\n     */\n    var partition = createAggregator(function(result, value, key) {\n      result[key ? 0 : 1].push(value);\n    }, function() { return [[], []]; });\n\n    /**\n     * Reduces `collection` to a value which is the accumulated result of running\n     * each element in `collection` thru `iteratee`, where each successive\n     * invocation is supplied the return value of the previous. If `accumulator`\n     * is not given, the first element of `collection` is used as the initial\n     * value. The iteratee is invoked with four arguments:\n     * (accumulator, value, index|key, collection).\n     *\n     * Many lodash methods are guarded to work as iteratees for methods like\n     * `_.reduce`, `_.reduceRight`, and `_.transform`.\n     *\n     * The guarded methods are:\n     * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,\n     * and `sortBy`\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @param {*} [accumulator] The initial value.\n     * @returns {*} Returns the accumulated value.\n     * @see _.reduceRight\n     * @example\n     *\n     * _.reduce([1, 2], function(sum, n) {\n     *   return sum + n;\n     * }, 0);\n     * // => 3\n     *\n     * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n     *   (result[value] || (result[value] = [])).push(key);\n     *   return result;\n     * }, {});\n     * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)\n     */\n    function reduce(collection, iteratee, accumulator) {\n      var func = isArray(collection) ? arrayReduce : baseReduce,\n          initAccum = arguments.length < 3;\n\n      return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);\n    }\n\n    /**\n     * This method is like `_.reduce` except that it iterates over elements of\n     * `collection` from right to left.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @param {*} [accumulator] The initial value.\n     * @returns {*} Returns the accumulated value.\n     * @see _.reduce\n     * @example\n     *\n     * var array = [[0, 1], [2, 3], [4, 5]];\n     *\n     * _.reduceRight(array, function(flattened, other) {\n     *   return flattened.concat(other);\n     * }, []);\n     * // => [4, 5, 2, 3, 0, 1]\n     */\n    function reduceRight(collection, iteratee, accumulator) {\n      var func = isArray(collection) ? arrayReduceRight : baseReduce,\n          initAccum = arguments.length < 3;\n\n      return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);\n    }\n\n    /**\n     * The opposite of `_.filter`; this method returns the elements of `collection`\n     * that `predicate` does **not** return truthy for.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the new filtered array.\n     * @see _.filter\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36, 'active': false },\n     *   { 'user': 'fred',   'age': 40, 'active': true }\n     * ];\n     *\n     * _.reject(users, function(o) { return !o.active; });\n     * // => objects for ['fred']\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.reject(users, { 'age': 40, 'active': true });\n     * // => objects for ['barney']\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.reject(users, ['active', false]);\n     * // => objects for ['fred']\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.reject(users, 'active');\n     * // => objects for ['barney']\n     */\n    function reject(collection, predicate) {\n      var func = isArray(collection) ? arrayFilter : baseFilter;\n      return func(collection, negate(getIteratee(predicate, 3)));\n    }\n\n    /**\n     * Gets a random element from `collection`.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to sample.\n     * @returns {*} Returns the random element.\n     * @example\n     *\n     * _.sample([1, 2, 3, 4]);\n     * // => 2\n     */\n    function sample(collection) {\n      var func = isArray(collection) ? arraySample : baseSample;\n      return func(collection);\n    }\n\n    /**\n     * Gets `n` random elements at unique keys from `collection` up to the\n     * size of `collection`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to sample.\n     * @param {number} [n=1] The number of elements to sample.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the random elements.\n     * @example\n     *\n     * _.sampleSize([1, 2, 3], 2);\n     * // => [3, 1]\n     *\n     * _.sampleSize([1, 2, 3], 4);\n     * // => [2, 3, 1]\n     */\n    function sampleSize(collection, n, guard) {\n      if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {\n        n = 1;\n      } else {\n        n = toInteger(n);\n      }\n      var func = isArray(collection) ? arraySampleSize : baseSampleSize;\n      return func(collection, n);\n    }\n\n    /**\n     * Creates an array of shuffled values, using a version of the\n     * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to shuffle.\n     * @returns {Array} Returns the new shuffled array.\n     * @example\n     *\n     * _.shuffle([1, 2, 3, 4]);\n     * // => [4, 1, 3, 2]\n     */\n    function shuffle(collection) {\n      var func = isArray(collection) ? arrayShuffle : baseShuffle;\n      return func(collection);\n    }\n\n    /**\n     * Gets the size of `collection` by returning its length for array-like\n     * values or the number of own enumerable string keyed properties for objects.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object|string} collection The collection to inspect.\n     * @returns {number} Returns the collection size.\n     * @example\n     *\n     * _.size([1, 2, 3]);\n     * // => 3\n     *\n     * _.size({ 'a': 1, 'b': 2 });\n     * // => 2\n     *\n     * _.size('pebbles');\n     * // => 7\n     */\n    function size(collection) {\n      if (collection == null) {\n        return 0;\n      }\n      if (isArrayLike(collection)) {\n        return isString(collection) ? stringSize(collection) : collection.length;\n      }\n      var tag = getTag(collection);\n      if (tag == mapTag || tag == setTag) {\n        return collection.size;\n      }\n      return baseKeys(collection).length;\n    }\n\n    /**\n     * Checks if `predicate` returns truthy for **any** element of `collection`.\n     * Iteration is stopped once `predicate` returns truthy. The predicate is\n     * invoked with three arguments: (value, index|key, collection).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {boolean} Returns `true` if any element passes the predicate check,\n     *  else `false`.\n     * @example\n     *\n     * _.some([null, 0, 'yes', false], Boolean);\n     * // => true\n     *\n     * var users = [\n     *   { 'user': 'barney', 'active': true },\n     *   { 'user': 'fred',   'active': false }\n     * ];\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.some(users, { 'user': 'barney', 'active': false });\n     * // => false\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.some(users, ['active', false]);\n     * // => true\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.some(users, 'active');\n     * // => true\n     */\n    function some(collection, predicate, guard) {\n      var func = isArray(collection) ? arraySome : baseSome;\n      if (guard && isIterateeCall(collection, predicate, guard)) {\n        predicate = undefined;\n      }\n      return func(collection, getIteratee(predicate, 3));\n    }\n\n    /**\n     * Creates an array of elements, sorted in ascending order by the results of\n     * running each element in a collection thru each iteratee. This method\n     * performs a stable sort, that is, it preserves the original sort order of\n     * equal elements. The iteratees are invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Collection\n     * @param {Array|Object} collection The collection to iterate over.\n     * @param {...(Function|Function[])} [iteratees=[_.identity]]\n     *  The iteratees to sort by.\n     * @returns {Array} Returns the new sorted array.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'fred',   'age': 48 },\n     *   { 'user': 'barney', 'age': 36 },\n     *   { 'user': 'fred',   'age': 40 },\n     *   { 'user': 'barney', 'age': 34 }\n     * ];\n     *\n     * _.sortBy(users, [function(o) { return o.user; }]);\n     * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]\n     *\n     * _.sortBy(users, ['user', 'age']);\n     * // => objects for [['barney', 34], ['barney', 36], ['fred', 40], ['fred', 48]]\n     */\n    var sortBy = baseRest(function(collection, iteratees) {\n      if (collection == null) {\n        return [];\n      }\n      var length = iteratees.length;\n      if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {\n        iteratees = [];\n      } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {\n        iteratees = [iteratees[0]];\n      }\n      return baseOrderBy(collection, baseFlatten(iteratees, 1), []);\n    });\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Gets the timestamp of the number of milliseconds that have elapsed since\n     * the Unix epoch (1 January 1970 00:00:00 UTC).\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Date\n     * @returns {number} Returns the timestamp.\n     * @example\n     *\n     * _.defer(function(stamp) {\n     *   console.log(_.now() - stamp);\n     * }, _.now());\n     * // => Logs the number of milliseconds it took for the deferred invocation.\n     */\n    var now = ctxNow || function() {\n      return root.Date.now();\n    };\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * The opposite of `_.before`; this method creates a function that invokes\n     * `func` once it's called `n` or more times.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {number} n The number of calls before `func` is invoked.\n     * @param {Function} func The function to restrict.\n     * @returns {Function} Returns the new restricted function.\n     * @example\n     *\n     * var saves = ['profile', 'settings'];\n     *\n     * var done = _.after(saves.length, function() {\n     *   console.log('done saving!');\n     * });\n     *\n     * _.forEach(saves, function(type) {\n     *   asyncSave({ 'type': type, 'complete': done });\n     * });\n     * // => Logs 'done saving!' after the two async saves have completed.\n     */\n    function after(n, func) {\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      n = toInteger(n);\n      return function() {\n        if (--n < 1) {\n          return func.apply(this, arguments);\n        }\n      };\n    }\n\n    /**\n     * Creates a function that invokes `func`, with up to `n` arguments,\n     * ignoring any additional arguments.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {Function} func The function to cap arguments for.\n     * @param {number} [n=func.length] The arity cap.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Function} Returns the new capped function.\n     * @example\n     *\n     * _.map(['6', '8', '10'], _.ary(parseInt, 1));\n     * // => [6, 8, 10]\n     */\n    function ary(func, n, guard) {\n      n = guard ? undefined : n;\n      n = (func && n == null) ? func.length : n;\n      return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);\n    }\n\n    /**\n     * Creates a function that invokes `func`, with the `this` binding and arguments\n     * of the created function, while it's called less than `n` times. Subsequent\n     * calls to the created function return the result of the last `func` invocation.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {number} n The number of calls at which `func` is no longer invoked.\n     * @param {Function} func The function to restrict.\n     * @returns {Function} Returns the new restricted function.\n     * @example\n     *\n     * jQuery(element).on('click', _.before(5, addContactToList));\n     * // => Allows adding up to 4 contacts to the list.\n     */\n    function before(n, func) {\n      var result;\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      n = toInteger(n);\n      return function() {\n        if (--n > 0) {\n          result = func.apply(this, arguments);\n        }\n        if (n <= 1) {\n          func = undefined;\n        }\n        return result;\n      };\n    }\n\n    /**\n     * Creates a function that invokes `func` with the `this` binding of `thisArg`\n     * and `partials` prepended to the arguments it receives.\n     *\n     * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,\n     * may be used as a placeholder for partially applied arguments.\n     *\n     * **Note:** Unlike native `Function#bind`, this method doesn't set the \"length\"\n     * property of bound functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to bind.\n     * @param {*} thisArg The `this` binding of `func`.\n     * @param {...*} [partials] The arguments to be partially applied.\n     * @returns {Function} Returns the new bound function.\n     * @example\n     *\n     * function greet(greeting, punctuation) {\n     *   return greeting + ' ' + this.user + punctuation;\n     * }\n     *\n     * var object = { 'user': 'fred' };\n     *\n     * var bound = _.bind(greet, object, 'hi');\n     * bound('!');\n     * // => 'hi fred!'\n     *\n     * // Bound with placeholders.\n     * var bound = _.bind(greet, object, _, '!');\n     * bound('hi');\n     * // => 'hi fred!'\n     */\n    var bind = baseRest(function(func, thisArg, partials) {\n      var bitmask = WRAP_BIND_FLAG;\n      if (partials.length) {\n        var holders = replaceHolders(partials, getHolder(bind));\n        bitmask |= WRAP_PARTIAL_FLAG;\n      }\n      return createWrap(func, bitmask, thisArg, partials, holders);\n    });\n\n    /**\n     * Creates a function that invokes the method at `object[key]` with `partials`\n     * prepended to the arguments it receives.\n     *\n     * This method differs from `_.bind` by allowing bound functions to reference\n     * methods that may be redefined or don't yet exist. See\n     * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)\n     * for more details.\n     *\n     * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic\n     * builds, may be used as a placeholder for partially applied arguments.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.10.0\n     * @category Function\n     * @param {Object} object The object to invoke the method on.\n     * @param {string} key The key of the method.\n     * @param {...*} [partials] The arguments to be partially applied.\n     * @returns {Function} Returns the new bound function.\n     * @example\n     *\n     * var object = {\n     *   'user': 'fred',\n     *   'greet': function(greeting, punctuation) {\n     *     return greeting + ' ' + this.user + punctuation;\n     *   }\n     * };\n     *\n     * var bound = _.bindKey(object, 'greet', 'hi');\n     * bound('!');\n     * // => 'hi fred!'\n     *\n     * object.greet = function(greeting, punctuation) {\n     *   return greeting + 'ya ' + this.user + punctuation;\n     * };\n     *\n     * bound('!');\n     * // => 'hiya fred!'\n     *\n     * // Bound with placeholders.\n     * var bound = _.bindKey(object, 'greet', _, '!');\n     * bound('hi');\n     * // => 'hiya fred!'\n     */\n    var bindKey = baseRest(function(object, key, partials) {\n      var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;\n      if (partials.length) {\n        var holders = replaceHolders(partials, getHolder(bindKey));\n        bitmask |= WRAP_PARTIAL_FLAG;\n      }\n      return createWrap(key, bitmask, object, partials, holders);\n    });\n\n    /**\n     * Creates a function that accepts arguments of `func` and either invokes\n     * `func` returning its result, if at least `arity` number of arguments have\n     * been provided, or returns a function that accepts the remaining `func`\n     * arguments, and so on. The arity of `func` may be specified if `func.length`\n     * is not sufficient.\n     *\n     * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,\n     * may be used as a placeholder for provided arguments.\n     *\n     * **Note:** This method doesn't set the \"length\" property of curried functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Function\n     * @param {Function} func The function to curry.\n     * @param {number} [arity=func.length] The arity of `func`.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Function} Returns the new curried function.\n     * @example\n     *\n     * var abc = function(a, b, c) {\n     *   return [a, b, c];\n     * };\n     *\n     * var curried = _.curry(abc);\n     *\n     * curried(1)(2)(3);\n     * // => [1, 2, 3]\n     *\n     * curried(1, 2)(3);\n     * // => [1, 2, 3]\n     *\n     * curried(1, 2, 3);\n     * // => [1, 2, 3]\n     *\n     * // Curried with placeholders.\n     * curried(1)(_, 3)(2);\n     * // => [1, 2, 3]\n     */\n    function curry(func, arity, guard) {\n      arity = guard ? undefined : arity;\n      var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\n      result.placeholder = curry.placeholder;\n      return result;\n    }\n\n    /**\n     * This method is like `_.curry` except that arguments are applied to `func`\n     * in the manner of `_.partialRight` instead of `_.partial`.\n     *\n     * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic\n     * builds, may be used as a placeholder for provided arguments.\n     *\n     * **Note:** This method doesn't set the \"length\" property of curried functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {Function} func The function to curry.\n     * @param {number} [arity=func.length] The arity of `func`.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Function} Returns the new curried function.\n     * @example\n     *\n     * var abc = function(a, b, c) {\n     *   return [a, b, c];\n     * };\n     *\n     * var curried = _.curryRight(abc);\n     *\n     * curried(3)(2)(1);\n     * // => [1, 2, 3]\n     *\n     * curried(2, 3)(1);\n     * // => [1, 2, 3]\n     *\n     * curried(1, 2, 3);\n     * // => [1, 2, 3]\n     *\n     * // Curried with placeholders.\n     * curried(3)(1, _)(2);\n     * // => [1, 2, 3]\n     */\n    function curryRight(func, arity, guard) {\n      arity = guard ? undefined : arity;\n      var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\n      result.placeholder = curryRight.placeholder;\n      return result;\n    }\n\n    /**\n     * Creates a debounced function that delays invoking `func` until after `wait`\n     * milliseconds have elapsed since the last time the debounced function was\n     * invoked. The debounced function comes with a `cancel` method to cancel\n     * delayed `func` invocations and a `flush` method to immediately invoke them.\n     * Provide `options` to indicate whether `func` should be invoked on the\n     * leading and/or trailing edge of the `wait` timeout. The `func` is invoked\n     * with the last arguments provided to the debounced function. Subsequent\n     * calls to the debounced function return the result of the last `func`\n     * invocation.\n     *\n     * **Note:** If `leading` and `trailing` options are `true`, `func` is\n     * invoked on the trailing edge of the timeout only if the debounced function\n     * is invoked more than once during the `wait` timeout.\n     *\n     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n     * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n     *\n     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n     * for details over the differences between `_.debounce` and `_.throttle`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to debounce.\n     * @param {number} [wait=0] The number of milliseconds to delay.\n     * @param {Object} [options={}] The options object.\n     * @param {boolean} [options.leading=false]\n     *  Specify invoking on the leading edge of the timeout.\n     * @param {number} [options.maxWait]\n     *  The maximum time `func` is allowed to be delayed before it's invoked.\n     * @param {boolean} [options.trailing=true]\n     *  Specify invoking on the trailing edge of the timeout.\n     * @returns {Function} Returns the new debounced function.\n     * @example\n     *\n     * // Avoid costly calculations while the window size is in flux.\n     * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\n     *\n     * // Invoke `sendMail` when clicked, debouncing subsequent calls.\n     * jQuery(element).on('click', _.debounce(sendMail, 300, {\n     *   'leading': true,\n     *   'trailing': false\n     * }));\n     *\n     * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\n     * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\n     * var source = new EventSource('/stream');\n     * jQuery(source).on('message', debounced);\n     *\n     * // Cancel the trailing debounced invocation.\n     * jQuery(window).on('popstate', debounced.cancel);\n     */\n    function debounce(func, wait, options) {\n      var lastArgs,\n          lastThis,\n          maxWait,\n          result,\n          timerId,\n          lastCallTime,\n          lastInvokeTime = 0,\n          leading = false,\n          maxing = false,\n          trailing = true;\n\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      wait = toNumber(wait) || 0;\n      if (isObject(options)) {\n        leading = !!options.leading;\n        maxing = 'maxWait' in options;\n        maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;\n        trailing = 'trailing' in options ? !!options.trailing : trailing;\n      }\n\n      function invokeFunc(time) {\n        var args = lastArgs,\n            thisArg = lastThis;\n\n        lastArgs = lastThis = undefined;\n        lastInvokeTime = time;\n        result = func.apply(thisArg, args);\n        return result;\n      }\n\n      function leadingEdge(time) {\n        // Reset any `maxWait` timer.\n        lastInvokeTime = time;\n        // Start the timer for the trailing edge.\n        timerId = setTimeout(timerExpired, wait);\n        // Invoke the leading edge.\n        return leading ? invokeFunc(time) : result;\n      }\n\n      function remainingWait(time) {\n        var timeSinceLastCall = time - lastCallTime,\n            timeSinceLastInvoke = time - lastInvokeTime,\n            timeWaiting = wait - timeSinceLastCall;\n\n        return maxing\n          ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)\n          : timeWaiting;\n      }\n\n      function shouldInvoke(time) {\n        var timeSinceLastCall = time - lastCallTime,\n            timeSinceLastInvoke = time - lastInvokeTime;\n\n        // Either this is the first call, activity has stopped and we're at the\n        // trailing edge, the system time has gone backwards and we're treating\n        // it as the trailing edge, or we've hit the `maxWait` limit.\n        return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||\n          (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));\n      }\n\n      function timerExpired() {\n        var time = now();\n        if (shouldInvoke(time)) {\n          return trailingEdge(time);\n        }\n        // Restart the timer.\n        timerId = setTimeout(timerExpired, remainingWait(time));\n      }\n\n      function trailingEdge(time) {\n        timerId = undefined;\n\n        // Only invoke if we have `lastArgs` which means `func` has been\n        // debounced at least once.\n        if (trailing && lastArgs) {\n          return invokeFunc(time);\n        }\n        lastArgs = lastThis = undefined;\n        return result;\n      }\n\n      function cancel() {\n        if (timerId !== undefined) {\n          clearTimeout(timerId);\n        }\n        lastInvokeTime = 0;\n        lastArgs = lastCallTime = lastThis = timerId = undefined;\n      }\n\n      function flush() {\n        return timerId === undefined ? result : trailingEdge(now());\n      }\n\n      function debounced() {\n        var time = now(),\n            isInvoking = shouldInvoke(time);\n\n        lastArgs = arguments;\n        lastThis = this;\n        lastCallTime = time;\n\n        if (isInvoking) {\n          if (timerId === undefined) {\n            return leadingEdge(lastCallTime);\n          }\n          if (maxing) {\n            // Handle invocations in a tight loop.\n            clearTimeout(timerId);\n            timerId = setTimeout(timerExpired, wait);\n            return invokeFunc(lastCallTime);\n          }\n        }\n        if (timerId === undefined) {\n          timerId = setTimeout(timerExpired, wait);\n        }\n        return result;\n      }\n      debounced.cancel = cancel;\n      debounced.flush = flush;\n      return debounced;\n    }\n\n    /**\n     * Defers invoking the `func` until the current call stack has cleared. Any\n     * additional arguments are provided to `func` when it's invoked.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to defer.\n     * @param {...*} [args] The arguments to invoke `func` with.\n     * @returns {number} Returns the timer id.\n     * @example\n     *\n     * _.defer(function(text) {\n     *   console.log(text);\n     * }, 'deferred');\n     * // => Logs 'deferred' after one millisecond.\n     */\n    var defer = baseRest(function(func, args) {\n      return baseDelay(func, 1, args);\n    });\n\n    /**\n     * Invokes `func` after `wait` milliseconds. Any additional arguments are\n     * provided to `func` when it's invoked.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to delay.\n     * @param {number} wait The number of milliseconds to delay invocation.\n     * @param {...*} [args] The arguments to invoke `func` with.\n     * @returns {number} Returns the timer id.\n     * @example\n     *\n     * _.delay(function(text) {\n     *   console.log(text);\n     * }, 1000, 'later');\n     * // => Logs 'later' after one second.\n     */\n    var delay = baseRest(function(func, wait, args) {\n      return baseDelay(func, toNumber(wait) || 0, args);\n    });\n\n    /**\n     * Creates a function that invokes `func` with arguments reversed.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Function\n     * @param {Function} func The function to flip arguments for.\n     * @returns {Function} Returns the new flipped function.\n     * @example\n     *\n     * var flipped = _.flip(function() {\n     *   return _.toArray(arguments);\n     * });\n     *\n     * flipped('a', 'b', 'c', 'd');\n     * // => ['d', 'c', 'b', 'a']\n     */\n    function flip(func) {\n      return createWrap(func, WRAP_FLIP_FLAG);\n    }\n\n    /**\n     * Creates a function that memoizes the result of `func`. If `resolver` is\n     * provided, it determines the cache key for storing the result based on the\n     * arguments provided to the memoized function. By default, the first argument\n     * provided to the memoized function is used as the map cache key. The `func`\n     * is invoked with the `this` binding of the memoized function.\n     *\n     * **Note:** The cache is exposed as the `cache` property on the memoized\n     * function. Its creation may be customized by replacing the `_.memoize.Cache`\n     * constructor with one whose instances implement the\n     * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)\n     * method interface of `clear`, `delete`, `get`, `has`, and `set`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to have its output memoized.\n     * @param {Function} [resolver] The function to resolve the cache key.\n     * @returns {Function} Returns the new memoized function.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2 };\n     * var other = { 'c': 3, 'd': 4 };\n     *\n     * var values = _.memoize(_.values);\n     * values(object);\n     * // => [1, 2]\n     *\n     * values(other);\n     * // => [3, 4]\n     *\n     * object.a = 2;\n     * values(object);\n     * // => [1, 2]\n     *\n     * // Modify the result cache.\n     * values.cache.set(object, ['a', 'b']);\n     * values(object);\n     * // => ['a', 'b']\n     *\n     * // Replace `_.memoize.Cache`.\n     * _.memoize.Cache = WeakMap;\n     */\n    function memoize(func, resolver) {\n      if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      var memoized = function() {\n        var args = arguments,\n            key = resolver ? resolver.apply(this, args) : args[0],\n            cache = memoized.cache;\n\n        if (cache.has(key)) {\n          return cache.get(key);\n        }\n        var result = func.apply(this, args);\n        memoized.cache = cache.set(key, result) || cache;\n        return result;\n      };\n      memoized.cache = new (memoize.Cache || MapCache);\n      return memoized;\n    }\n\n    // Expose `MapCache`.\n    memoize.Cache = MapCache;\n\n    /**\n     * Creates a function that negates the result of the predicate `func`. The\n     * `func` predicate is invoked with the `this` binding and arguments of the\n     * created function.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {Function} predicate The predicate to negate.\n     * @returns {Function} Returns the new negated function.\n     * @example\n     *\n     * function isEven(n) {\n     *   return n % 2 == 0;\n     * }\n     *\n     * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));\n     * // => [1, 3, 5]\n     */\n    function negate(predicate) {\n      if (typeof predicate != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      return function() {\n        var args = arguments;\n        switch (args.length) {\n          case 0: return !predicate.call(this);\n          case 1: return !predicate.call(this, args[0]);\n          case 2: return !predicate.call(this, args[0], args[1]);\n          case 3: return !predicate.call(this, args[0], args[1], args[2]);\n        }\n        return !predicate.apply(this, args);\n      };\n    }\n\n    /**\n     * Creates a function that is restricted to invoking `func` once. Repeat calls\n     * to the function return the value of the first invocation. The `func` is\n     * invoked with the `this` binding and arguments of the created function.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to restrict.\n     * @returns {Function} Returns the new restricted function.\n     * @example\n     *\n     * var initialize = _.once(createApplication);\n     * initialize();\n     * initialize();\n     * // => `createApplication` is invoked once\n     */\n    function once(func) {\n      return before(2, func);\n    }\n\n    /**\n     * Creates a function that invokes `func` with its arguments transformed.\n     *\n     * @static\n     * @since 4.0.0\n     * @memberOf _\n     * @category Function\n     * @param {Function} func The function to wrap.\n     * @param {...(Function|Function[])} [transforms=[_.identity]]\n     *  The argument transforms.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * function doubled(n) {\n     *   return n * 2;\n     * }\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var func = _.overArgs(function(x, y) {\n     *   return [x, y];\n     * }, [square, doubled]);\n     *\n     * func(9, 3);\n     * // => [81, 6]\n     *\n     * func(10, 5);\n     * // => [100, 10]\n     */\n    var overArgs = castRest(function(func, transforms) {\n      transforms = (transforms.length == 1 && isArray(transforms[0]))\n        ? arrayMap(transforms[0], baseUnary(getIteratee()))\n        : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));\n\n      var funcsLength = transforms.length;\n      return baseRest(function(args) {\n        var index = -1,\n            length = nativeMin(args.length, funcsLength);\n\n        while (++index < length) {\n          args[index] = transforms[index].call(this, args[index]);\n        }\n        return apply(func, this, args);\n      });\n    });\n\n    /**\n     * Creates a function that invokes `func` with `partials` prepended to the\n     * arguments it receives. This method is like `_.bind` except it does **not**\n     * alter the `this` binding.\n     *\n     * The `_.partial.placeholder` value, which defaults to `_` in monolithic\n     * builds, may be used as a placeholder for partially applied arguments.\n     *\n     * **Note:** This method doesn't set the \"length\" property of partially\n     * applied functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.2.0\n     * @category Function\n     * @param {Function} func The function to partially apply arguments to.\n     * @param {...*} [partials] The arguments to be partially applied.\n     * @returns {Function} Returns the new partially applied function.\n     * @example\n     *\n     * function greet(greeting, name) {\n     *   return greeting + ' ' + name;\n     * }\n     *\n     * var sayHelloTo = _.partial(greet, 'hello');\n     * sayHelloTo('fred');\n     * // => 'hello fred'\n     *\n     * // Partially applied with placeholders.\n     * var greetFred = _.partial(greet, _, 'fred');\n     * greetFred('hi');\n     * // => 'hi fred'\n     */\n    var partial = baseRest(function(func, partials) {\n      var holders = replaceHolders(partials, getHolder(partial));\n      return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);\n    });\n\n    /**\n     * This method is like `_.partial` except that partially applied arguments\n     * are appended to the arguments it receives.\n     *\n     * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic\n     * builds, may be used as a placeholder for partially applied arguments.\n     *\n     * **Note:** This method doesn't set the \"length\" property of partially\n     * applied functions.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.0.0\n     * @category Function\n     * @param {Function} func The function to partially apply arguments to.\n     * @param {...*} [partials] The arguments to be partially applied.\n     * @returns {Function} Returns the new partially applied function.\n     * @example\n     *\n     * function greet(greeting, name) {\n     *   return greeting + ' ' + name;\n     * }\n     *\n     * var greetFred = _.partialRight(greet, 'fred');\n     * greetFred('hi');\n     * // => 'hi fred'\n     *\n     * // Partially applied with placeholders.\n     * var sayHelloTo = _.partialRight(greet, 'hello', _);\n     * sayHelloTo('fred');\n     * // => 'hello fred'\n     */\n    var partialRight = baseRest(function(func, partials) {\n      var holders = replaceHolders(partials, getHolder(partialRight));\n      return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);\n    });\n\n    /**\n     * Creates a function that invokes `func` with arguments arranged according\n     * to the specified `indexes` where the argument value at the first index is\n     * provided as the first argument, the argument value at the second index is\n     * provided as the second argument, and so on.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Function\n     * @param {Function} func The function to rearrange arguments for.\n     * @param {...(number|number[])} indexes The arranged argument indexes.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var rearged = _.rearg(function(a, b, c) {\n     *   return [a, b, c];\n     * }, [2, 0, 1]);\n     *\n     * rearged('b', 'c', 'a')\n     * // => ['a', 'b', 'c']\n     */\n    var rearg = flatRest(function(func, indexes) {\n      return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);\n    });\n\n    /**\n     * Creates a function that invokes `func` with the `this` binding of the\n     * created function and arguments from `start` and beyond provided as\n     * an array.\n     *\n     * **Note:** This method is based on the\n     * [rest parameter](https://mdn.io/rest_parameters).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Function\n     * @param {Function} func The function to apply a rest parameter to.\n     * @param {number} [start=func.length-1] The start position of the rest parameter.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var say = _.rest(function(what, names) {\n     *   return what + ' ' + _.initial(names).join(', ') +\n     *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);\n     * });\n     *\n     * say('hello', 'fred', 'barney', 'pebbles');\n     * // => 'hello fred, barney, & pebbles'\n     */\n    function rest(func, start) {\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      start = start === undefined ? start : toInteger(start);\n      return baseRest(func, start);\n    }\n\n    /**\n     * Creates a function that invokes `func` with the `this` binding of the\n     * create function and an array of arguments much like\n     * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).\n     *\n     * **Note:** This method is based on the\n     * [spread operator](https://mdn.io/spread_operator).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.2.0\n     * @category Function\n     * @param {Function} func The function to spread arguments over.\n     * @param {number} [start=0] The start position of the spread.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var say = _.spread(function(who, what) {\n     *   return who + ' says ' + what;\n     * });\n     *\n     * say(['fred', 'hello']);\n     * // => 'fred says hello'\n     *\n     * var numbers = Promise.all([\n     *   Promise.resolve(40),\n     *   Promise.resolve(36)\n     * ]);\n     *\n     * numbers.then(_.spread(function(x, y) {\n     *   return x + y;\n     * }));\n     * // => a Promise of 76\n     */\n    function spread(func, start) {\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      start = start == null ? 0 : nativeMax(toInteger(start), 0);\n      return baseRest(function(args) {\n        var array = args[start],\n            otherArgs = castSlice(args, 0, start);\n\n        if (array) {\n          arrayPush(otherArgs, array);\n        }\n        return apply(func, this, otherArgs);\n      });\n    }\n\n    /**\n     * Creates a throttled function that only invokes `func` at most once per\n     * every `wait` milliseconds. The throttled function comes with a `cancel`\n     * method to cancel delayed `func` invocations and a `flush` method to\n     * immediately invoke them. Provide `options` to indicate whether `func`\n     * should be invoked on the leading and/or trailing edge of the `wait`\n     * timeout. The `func` is invoked with the last arguments provided to the\n     * throttled function. Subsequent calls to the throttled function return the\n     * result of the last `func` invocation.\n     *\n     * **Note:** If `leading` and `trailing` options are `true`, `func` is\n     * invoked on the trailing edge of the timeout only if the throttled function\n     * is invoked more than once during the `wait` timeout.\n     *\n     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n     * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n     *\n     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n     * for details over the differences between `_.throttle` and `_.debounce`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {Function} func The function to throttle.\n     * @param {number} [wait=0] The number of milliseconds to throttle invocations to.\n     * @param {Object} [options={}] The options object.\n     * @param {boolean} [options.leading=true]\n     *  Specify invoking on the leading edge of the timeout.\n     * @param {boolean} [options.trailing=true]\n     *  Specify invoking on the trailing edge of the timeout.\n     * @returns {Function} Returns the new throttled function.\n     * @example\n     *\n     * // Avoid excessively updating the position while scrolling.\n     * jQuery(window).on('scroll', _.throttle(updatePosition, 100));\n     *\n     * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.\n     * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });\n     * jQuery(element).on('click', throttled);\n     *\n     * // Cancel the trailing throttled invocation.\n     * jQuery(window).on('popstate', throttled.cancel);\n     */\n    function throttle(func, wait, options) {\n      var leading = true,\n          trailing = true;\n\n      if (typeof func != 'function') {\n        throw new TypeError(FUNC_ERROR_TEXT);\n      }\n      if (isObject(options)) {\n        leading = 'leading' in options ? !!options.leading : leading;\n        trailing = 'trailing' in options ? !!options.trailing : trailing;\n      }\n      return debounce(func, wait, {\n        'leading': leading,\n        'maxWait': wait,\n        'trailing': trailing\n      });\n    }\n\n    /**\n     * Creates a function that accepts up to one argument, ignoring any\n     * additional arguments.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Function\n     * @param {Function} func The function to cap arguments for.\n     * @returns {Function} Returns the new capped function.\n     * @example\n     *\n     * _.map(['6', '8', '10'], _.unary(parseInt));\n     * // => [6, 8, 10]\n     */\n    function unary(func) {\n      return ary(func, 1);\n    }\n\n    /**\n     * Creates a function that provides `value` to `wrapper` as its first\n     * argument. Any additional arguments provided to the function are appended\n     * to those provided to the `wrapper`. The wrapper is invoked with the `this`\n     * binding of the created function.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Function\n     * @param {*} value The value to wrap.\n     * @param {Function} [wrapper=identity] The wrapper function.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var p = _.wrap(_.escape, function(func, text) {\n     *   return '<p>' + func(text) + '</p>';\n     * });\n     *\n     * p('fred, barney, & pebbles');\n     * // => '<p>fred, barney, &amp; pebbles</p>'\n     */\n    function wrap(value, wrapper) {\n      return partial(castFunction(wrapper), value);\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Casts `value` as an array if it's not one.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.4.0\n     * @category Lang\n     * @param {*} value The value to inspect.\n     * @returns {Array} Returns the cast array.\n     * @example\n     *\n     * _.castArray(1);\n     * // => [1]\n     *\n     * _.castArray({ 'a': 1 });\n     * // => [{ 'a': 1 }]\n     *\n     * _.castArray('abc');\n     * // => ['abc']\n     *\n     * _.castArray(null);\n     * // => [null]\n     *\n     * _.castArray(undefined);\n     * // => [undefined]\n     *\n     * _.castArray();\n     * // => []\n     *\n     * var array = [1, 2, 3];\n     * console.log(_.castArray(array) === array);\n     * // => true\n     */\n    function castArray() {\n      if (!arguments.length) {\n        return [];\n      }\n      var value = arguments[0];\n      return isArray(value) ? value : [value];\n    }\n\n    /**\n     * Creates a shallow clone of `value`.\n     *\n     * **Note:** This method is loosely based on the\n     * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)\n     * and supports cloning arrays, array buffers, booleans, date objects, maps,\n     * numbers, `Object` objects, regexes, sets, strings, symbols, and typed\n     * arrays. The own enumerable properties of `arguments` objects are cloned\n     * as plain objects. An empty object is returned for uncloneable values such\n     * as error objects, functions, DOM nodes, and WeakMaps.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to clone.\n     * @returns {*} Returns the cloned value.\n     * @see _.cloneDeep\n     * @example\n     *\n     * var objects = [{ 'a': 1 }, { 'b': 2 }];\n     *\n     * var shallow = _.clone(objects);\n     * console.log(shallow[0] === objects[0]);\n     * // => true\n     */\n    function clone(value) {\n      return baseClone(value, CLONE_SYMBOLS_FLAG);\n    }\n\n    /**\n     * This method is like `_.clone` except that it accepts `customizer` which\n     * is invoked to produce the cloned value. If `customizer` returns `undefined`,\n     * cloning is handled by the method instead. The `customizer` is invoked with\n     * up to four arguments; (value [, index|key, object, stack]).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to clone.\n     * @param {Function} [customizer] The function to customize cloning.\n     * @returns {*} Returns the cloned value.\n     * @see _.cloneDeepWith\n     * @example\n     *\n     * function customizer(value) {\n     *   if (_.isElement(value)) {\n     *     return value.cloneNode(false);\n     *   }\n     * }\n     *\n     * var el = _.cloneWith(document.body, customizer);\n     *\n     * console.log(el === document.body);\n     * // => false\n     * console.log(el.nodeName);\n     * // => 'BODY'\n     * console.log(el.childNodes.length);\n     * // => 0\n     */\n    function cloneWith(value, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);\n    }\n\n    /**\n     * This method is like `_.clone` except that it recursively clones `value`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.0.0\n     * @category Lang\n     * @param {*} value The value to recursively clone.\n     * @returns {*} Returns the deep cloned value.\n     * @see _.clone\n     * @example\n     *\n     * var objects = [{ 'a': 1 }, { 'b': 2 }];\n     *\n     * var deep = _.cloneDeep(objects);\n     * console.log(deep[0] === objects[0]);\n     * // => false\n     */\n    function cloneDeep(value) {\n      return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);\n    }\n\n    /**\n     * This method is like `_.cloneWith` except that it recursively clones `value`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to recursively clone.\n     * @param {Function} [customizer] The function to customize cloning.\n     * @returns {*} Returns the deep cloned value.\n     * @see _.cloneWith\n     * @example\n     *\n     * function customizer(value) {\n     *   if (_.isElement(value)) {\n     *     return value.cloneNode(true);\n     *   }\n     * }\n     *\n     * var el = _.cloneDeepWith(document.body, customizer);\n     *\n     * console.log(el === document.body);\n     * // => false\n     * console.log(el.nodeName);\n     * // => 'BODY'\n     * console.log(el.childNodes.length);\n     * // => 20\n     */\n    function cloneDeepWith(value, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);\n    }\n\n    /**\n     * Checks if `object` conforms to `source` by invoking the predicate\n     * properties of `source` with the corresponding property values of `object`.\n     *\n     * **Note:** This method is equivalent to `_.conforms` when `source` is\n     * partially applied.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.14.0\n     * @category Lang\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property predicates to conform to.\n     * @returns {boolean} Returns `true` if `object` conforms, else `false`.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2 };\n     *\n     * _.conformsTo(object, { 'b': function(n) { return n > 1; } });\n     * // => true\n     *\n     * _.conformsTo(object, { 'b': function(n) { return n > 2; } });\n     * // => false\n     */\n    function conformsTo(object, source) {\n      return source == null || baseConformsTo(object, source, keys(source));\n    }\n\n    /**\n     * Performs a\n     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n     * comparison between two values to determine if they are equivalent.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n     * @example\n     *\n     * var object = { 'a': 1 };\n     * var other = { 'a': 1 };\n     *\n     * _.eq(object, object);\n     * // => true\n     *\n     * _.eq(object, other);\n     * // => false\n     *\n     * _.eq('a', 'a');\n     * // => true\n     *\n     * _.eq('a', Object('a'));\n     * // => false\n     *\n     * _.eq(NaN, NaN);\n     * // => true\n     */\n    function eq(value, other) {\n      return value === other || (value !== value && other !== other);\n    }\n\n    /**\n     * Checks if `value` is greater than `other`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.9.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is greater than `other`,\n     *  else `false`.\n     * @see _.lt\n     * @example\n     *\n     * _.gt(3, 1);\n     * // => true\n     *\n     * _.gt(3, 3);\n     * // => false\n     *\n     * _.gt(1, 3);\n     * // => false\n     */\n    var gt = createRelationalOperation(baseGt);\n\n    /**\n     * Checks if `value` is greater than or equal to `other`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.9.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is greater than or equal to\n     *  `other`, else `false`.\n     * @see _.lte\n     * @example\n     *\n     * _.gte(3, 1);\n     * // => true\n     *\n     * _.gte(3, 3);\n     * // => true\n     *\n     * _.gte(1, 3);\n     * // => false\n     */\n    var gte = createRelationalOperation(function(value, other) {\n      return value >= other;\n    });\n\n    /**\n     * Checks if `value` is likely an `arguments` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n     *  else `false`.\n     * @example\n     *\n     * _.isArguments(function() { return arguments; }());\n     * // => true\n     *\n     * _.isArguments([1, 2, 3]);\n     * // => false\n     */\n    var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {\n      return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&\n        !propertyIsEnumerable.call(value, 'callee');\n    };\n\n    /**\n     * Checks if `value` is classified as an `Array` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an array, else `false`.\n     * @example\n     *\n     * _.isArray([1, 2, 3]);\n     * // => true\n     *\n     * _.isArray(document.body.children);\n     * // => false\n     *\n     * _.isArray('abc');\n     * // => false\n     *\n     * _.isArray(_.noop);\n     * // => false\n     */\n    var isArray = Array.isArray;\n\n    /**\n     * Checks if `value` is classified as an `ArrayBuffer` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\n     * @example\n     *\n     * _.isArrayBuffer(new ArrayBuffer(2));\n     * // => true\n     *\n     * _.isArrayBuffer(new Array(2));\n     * // => false\n     */\n    var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;\n\n    /**\n     * Checks if `value` is array-like. A value is considered array-like if it's\n     * not a function and has a `value.length` that's an integer greater than or\n     * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\n     * @example\n     *\n     * _.isArrayLike([1, 2, 3]);\n     * // => true\n     *\n     * _.isArrayLike(document.body.children);\n     * // => true\n     *\n     * _.isArrayLike('abc');\n     * // => true\n     *\n     * _.isArrayLike(_.noop);\n     * // => false\n     */\n    function isArrayLike(value) {\n      return value != null && isLength(value.length) && !isFunction(value);\n    }\n\n    /**\n     * This method is like `_.isArrayLike` except that it also checks if `value`\n     * is an object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an array-like object,\n     *  else `false`.\n     * @example\n     *\n     * _.isArrayLikeObject([1, 2, 3]);\n     * // => true\n     *\n     * _.isArrayLikeObject(document.body.children);\n     * // => true\n     *\n     * _.isArrayLikeObject('abc');\n     * // => false\n     *\n     * _.isArrayLikeObject(_.noop);\n     * // => false\n     */\n    function isArrayLikeObject(value) {\n      return isObjectLike(value) && isArrayLike(value);\n    }\n\n    /**\n     * Checks if `value` is classified as a boolean primitive or object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.\n     * @example\n     *\n     * _.isBoolean(false);\n     * // => true\n     *\n     * _.isBoolean(null);\n     * // => false\n     */\n    function isBoolean(value) {\n      return value === true || value === false ||\n        (isObjectLike(value) && baseGetTag(value) == boolTag);\n    }\n\n    /**\n     * Checks if `value` is a buffer.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.\n     * @example\n     *\n     * _.isBuffer(new Buffer(2));\n     * // => true\n     *\n     * _.isBuffer(new Uint8Array(2));\n     * // => false\n     */\n    var isBuffer = nativeIsBuffer || stubFalse;\n\n    /**\n     * Checks if `value` is classified as a `Date` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\n     * @example\n     *\n     * _.isDate(new Date);\n     * // => true\n     *\n     * _.isDate('Mon April 23 2012');\n     * // => false\n     */\n    var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;\n\n    /**\n     * Checks if `value` is likely a DOM element.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.\n     * @example\n     *\n     * _.isElement(document.body);\n     * // => true\n     *\n     * _.isElement('<body>');\n     * // => false\n     */\n    function isElement(value) {\n      return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);\n    }\n\n    /**\n     * Checks if `value` is an empty object, collection, map, or set.\n     *\n     * Objects are considered empty if they have no own enumerable string keyed\n     * properties.\n     *\n     * Array-like values such as `arguments` objects, arrays, buffers, strings, or\n     * jQuery-like collections are considered empty if they have a `length` of `0`.\n     * Similarly, maps and sets are considered empty if they have a `size` of `0`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is empty, else `false`.\n     * @example\n     *\n     * _.isEmpty(null);\n     * // => true\n     *\n     * _.isEmpty(true);\n     * // => true\n     *\n     * _.isEmpty(1);\n     * // => true\n     *\n     * _.isEmpty([1, 2, 3]);\n     * // => false\n     *\n     * _.isEmpty({ 'a': 1 });\n     * // => false\n     */\n    function isEmpty(value) {\n      if (value == null) {\n        return true;\n      }\n      if (isArrayLike(value) &&\n          (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||\n            isBuffer(value) || isTypedArray(value) || isArguments(value))) {\n        return !value.length;\n      }\n      var tag = getTag(value);\n      if (tag == mapTag || tag == setTag) {\n        return !value.size;\n      }\n      if (isPrototype(value)) {\n        return !baseKeys(value).length;\n      }\n      for (var key in value) {\n        if (hasOwnProperty.call(value, key)) {\n          return false;\n        }\n      }\n      return true;\n    }\n\n    /**\n     * Performs a deep comparison between two values to determine if they are\n     * equivalent.\n     *\n     * **Note:** This method supports comparing arrays, array buffers, booleans,\n     * date objects, error objects, maps, numbers, `Object` objects, regexes,\n     * sets, strings, symbols, and typed arrays. `Object` objects are compared\n     * by their own, not inherited, enumerable properties. Functions and DOM\n     * nodes are compared by strict equality, i.e. `===`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n     * @example\n     *\n     * var object = { 'a': 1 };\n     * var other = { 'a': 1 };\n     *\n     * _.isEqual(object, other);\n     * // => true\n     *\n     * object === other;\n     * // => false\n     */\n    function isEqual(value, other) {\n      return baseIsEqual(value, other);\n    }\n\n    /**\n     * This method is like `_.isEqual` except that it accepts `customizer` which\n     * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n     * are handled by the method instead. The `customizer` is invoked with up to\n     * six arguments: (objValue, othValue [, index|key, object, other, stack]).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @param {Function} [customizer] The function to customize comparisons.\n     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n     * @example\n     *\n     * function isGreeting(value) {\n     *   return /^h(?:i|ello)$/.test(value);\n     * }\n     *\n     * function customizer(objValue, othValue) {\n     *   if (isGreeting(objValue) && isGreeting(othValue)) {\n     *     return true;\n     *   }\n     * }\n     *\n     * var array = ['hello', 'goodbye'];\n     * var other = ['hi', 'goodbye'];\n     *\n     * _.isEqualWith(array, other, customizer);\n     * // => true\n     */\n    function isEqualWith(value, other, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      var result = customizer ? customizer(value, other) : undefined;\n      return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;\n    }\n\n    /**\n     * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,\n     * `SyntaxError`, `TypeError`, or `URIError` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an error object, else `false`.\n     * @example\n     *\n     * _.isError(new Error);\n     * // => true\n     *\n     * _.isError(Error);\n     * // => false\n     */\n    function isError(value) {\n      if (!isObjectLike(value)) {\n        return false;\n      }\n      var tag = baseGetTag(value);\n      return tag == errorTag || tag == domExcTag ||\n        (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));\n    }\n\n    /**\n     * Checks if `value` is a finite primitive number.\n     *\n     * **Note:** This method is based on\n     * [`Number.isFinite`](https://mdn.io/Number/isFinite).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.\n     * @example\n     *\n     * _.isFinite(3);\n     * // => true\n     *\n     * _.isFinite(Number.MIN_VALUE);\n     * // => true\n     *\n     * _.isFinite(Infinity);\n     * // => false\n     *\n     * _.isFinite('3');\n     * // => false\n     */\n    function isFinite(value) {\n      return typeof value == 'number' && nativeIsFinite(value);\n    }\n\n    /**\n     * Checks if `value` is classified as a `Function` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a function, else `false`.\n     * @example\n     *\n     * _.isFunction(_);\n     * // => true\n     *\n     * _.isFunction(/abc/);\n     * // => false\n     */\n    function isFunction(value) {\n      if (!isObject(value)) {\n        return false;\n      }\n      // The use of `Object#toString` avoids issues with the `typeof` operator\n      // in Safari 9 which returns 'object' for typed arrays and other constructors.\n      var tag = baseGetTag(value);\n      return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;\n    }\n\n    /**\n     * Checks if `value` is an integer.\n     *\n     * **Note:** This method is based on\n     * [`Number.isInteger`](https://mdn.io/Number/isInteger).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an integer, else `false`.\n     * @example\n     *\n     * _.isInteger(3);\n     * // => true\n     *\n     * _.isInteger(Number.MIN_VALUE);\n     * // => false\n     *\n     * _.isInteger(Infinity);\n     * // => false\n     *\n     * _.isInteger('3');\n     * // => false\n     */\n    function isInteger(value) {\n      return typeof value == 'number' && value == toInteger(value);\n    }\n\n    /**\n     * Checks if `value` is a valid array-like length.\n     *\n     * **Note:** This method is loosely based on\n     * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.\n     * @example\n     *\n     * _.isLength(3);\n     * // => true\n     *\n     * _.isLength(Number.MIN_VALUE);\n     * // => false\n     *\n     * _.isLength(Infinity);\n     * // => false\n     *\n     * _.isLength('3');\n     * // => false\n     */\n    function isLength(value) {\n      return typeof value == 'number' &&\n        value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\n    }\n\n    /**\n     * Checks if `value` is the\n     * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n     * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n     * @example\n     *\n     * _.isObject({});\n     * // => true\n     *\n     * _.isObject([1, 2, 3]);\n     * // => true\n     *\n     * _.isObject(_.noop);\n     * // => true\n     *\n     * _.isObject(null);\n     * // => false\n     */\n    function isObject(value) {\n      var type = typeof value;\n      return value != null && (type == 'object' || type == 'function');\n    }\n\n    /**\n     * Checks if `value` is object-like. A value is object-like if it's not `null`\n     * and has a `typeof` result of \"object\".\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n     * @example\n     *\n     * _.isObjectLike({});\n     * // => true\n     *\n     * _.isObjectLike([1, 2, 3]);\n     * // => true\n     *\n     * _.isObjectLike(_.noop);\n     * // => false\n     *\n     * _.isObjectLike(null);\n     * // => false\n     */\n    function isObjectLike(value) {\n      return value != null && typeof value == 'object';\n    }\n\n    /**\n     * Checks if `value` is classified as a `Map` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n     * @example\n     *\n     * _.isMap(new Map);\n     * // => true\n     *\n     * _.isMap(new WeakMap);\n     * // => false\n     */\n    var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;\n\n    /**\n     * Performs a partial deep comparison between `object` and `source` to\n     * determine if `object` contains equivalent property values.\n     *\n     * **Note:** This method is equivalent to `_.matches` when `source` is\n     * partially applied.\n     *\n     * Partial comparisons will match empty array and empty object `source`\n     * values against any array or object value, respectively. See `_.isEqual`\n     * for a list of supported value comparisons.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property values to match.\n     * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2 };\n     *\n     * _.isMatch(object, { 'b': 2 });\n     * // => true\n     *\n     * _.isMatch(object, { 'b': 1 });\n     * // => false\n     */\n    function isMatch(object, source) {\n      return object === source || baseIsMatch(object, source, getMatchData(source));\n    }\n\n    /**\n     * This method is like `_.isMatch` except that it accepts `customizer` which\n     * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n     * are handled by the method instead. The `customizer` is invoked with five\n     * arguments: (objValue, srcValue, index|key, object, source).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {Object} object The object to inspect.\n     * @param {Object} source The object of property values to match.\n     * @param {Function} [customizer] The function to customize comparisons.\n     * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n     * @example\n     *\n     * function isGreeting(value) {\n     *   return /^h(?:i|ello)$/.test(value);\n     * }\n     *\n     * function customizer(objValue, srcValue) {\n     *   if (isGreeting(objValue) && isGreeting(srcValue)) {\n     *     return true;\n     *   }\n     * }\n     *\n     * var object = { 'greeting': 'hello' };\n     * var source = { 'greeting': 'hi' };\n     *\n     * _.isMatchWith(object, source, customizer);\n     * // => true\n     */\n    function isMatchWith(object, source, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return baseIsMatch(object, source, getMatchData(source), customizer);\n    }\n\n    /**\n     * Checks if `value` is `NaN`.\n     *\n     * **Note:** This method is based on\n     * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as\n     * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for\n     * `undefined` and other non-number values.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n     * @example\n     *\n     * _.isNaN(NaN);\n     * // => true\n     *\n     * _.isNaN(new Number(NaN));\n     * // => true\n     *\n     * isNaN(undefined);\n     * // => true\n     *\n     * _.isNaN(undefined);\n     * // => false\n     */\n    function isNaN(value) {\n      // An `NaN` primitive is the only value that is not equal to itself.\n      // Perform the `toStringTag` check first to avoid errors with some\n      // ActiveX objects in IE.\n      return isNumber(value) && value != +value;\n    }\n\n    /**\n     * Checks if `value` is a pristine native function.\n     *\n     * **Note:** This method can't reliably detect native functions in the presence\n     * of the core-js package because core-js circumvents this kind of detection.\n     * Despite multiple requests, the core-js maintainer has made it clear: any\n     * attempt to fix the detection will be obstructed. As a result, we're left\n     * with little choice but to throw an error. Unfortunately, this also affects\n     * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),\n     * which rely on core-js.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a native function,\n     *  else `false`.\n     * @example\n     *\n     * _.isNative(Array.prototype.push);\n     * // => true\n     *\n     * _.isNative(_);\n     * // => false\n     */\n    function isNative(value) {\n      if (isMaskable(value)) {\n        throw new Error(CORE_ERROR_TEXT);\n      }\n      return baseIsNative(value);\n    }\n\n    /**\n     * Checks if `value` is `null`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is `null`, else `false`.\n     * @example\n     *\n     * _.isNull(null);\n     * // => true\n     *\n     * _.isNull(void 0);\n     * // => false\n     */\n    function isNull(value) {\n      return value === null;\n    }\n\n    /**\n     * Checks if `value` is `null` or `undefined`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is nullish, else `false`.\n     * @example\n     *\n     * _.isNil(null);\n     * // => true\n     *\n     * _.isNil(void 0);\n     * // => true\n     *\n     * _.isNil(NaN);\n     * // => false\n     */\n    function isNil(value) {\n      return value == null;\n    }\n\n    /**\n     * Checks if `value` is classified as a `Number` primitive or object.\n     *\n     * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are\n     * classified as numbers, use the `_.isFinite` method.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a number, else `false`.\n     * @example\n     *\n     * _.isNumber(3);\n     * // => true\n     *\n     * _.isNumber(Number.MIN_VALUE);\n     * // => true\n     *\n     * _.isNumber(Infinity);\n     * // => true\n     *\n     * _.isNumber('3');\n     * // => false\n     */\n    function isNumber(value) {\n      return typeof value == 'number' ||\n        (isObjectLike(value) && baseGetTag(value) == numberTag);\n    }\n\n    /**\n     * Checks if `value` is a plain object, that is, an object created by the\n     * `Object` constructor or one with a `[[Prototype]]` of `null`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.8.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     * }\n     *\n     * _.isPlainObject(new Foo);\n     * // => false\n     *\n     * _.isPlainObject([1, 2, 3]);\n     * // => false\n     *\n     * _.isPlainObject({ 'x': 0, 'y': 0 });\n     * // => true\n     *\n     * _.isPlainObject(Object.create(null));\n     * // => true\n     */\n    function isPlainObject(value) {\n      if (!isObjectLike(value) || baseGetTag(value) != objectTag) {\n        return false;\n      }\n      var proto = getPrototype(value);\n      if (proto === null) {\n        return true;\n      }\n      var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;\n      return typeof Ctor == 'function' && Ctor instanceof Ctor &&\n        funcToString.call(Ctor) == objectCtorString;\n    }\n\n    /**\n     * Checks if `value` is classified as a `RegExp` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.1.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\n     * @example\n     *\n     * _.isRegExp(/abc/);\n     * // => true\n     *\n     * _.isRegExp('/abc/');\n     * // => false\n     */\n    var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;\n\n    /**\n     * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754\n     * double precision number which isn't the result of a rounded unsafe integer.\n     *\n     * **Note:** This method is based on\n     * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.\n     * @example\n     *\n     * _.isSafeInteger(3);\n     * // => true\n     *\n     * _.isSafeInteger(Number.MIN_VALUE);\n     * // => false\n     *\n     * _.isSafeInteger(Infinity);\n     * // => false\n     *\n     * _.isSafeInteger('3');\n     * // => false\n     */\n    function isSafeInteger(value) {\n      return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;\n    }\n\n    /**\n     * Checks if `value` is classified as a `Set` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n     * @example\n     *\n     * _.isSet(new Set);\n     * // => true\n     *\n     * _.isSet(new WeakSet);\n     * // => false\n     */\n    var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;\n\n    /**\n     * Checks if `value` is classified as a `String` primitive or object.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a string, else `false`.\n     * @example\n     *\n     * _.isString('abc');\n     * // => true\n     *\n     * _.isString(1);\n     * // => false\n     */\n    function isString(value) {\n      return typeof value == 'string' ||\n        (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);\n    }\n\n    /**\n     * Checks if `value` is classified as a `Symbol` primitive or object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n     * @example\n     *\n     * _.isSymbol(Symbol.iterator);\n     * // => true\n     *\n     * _.isSymbol('abc');\n     * // => false\n     */\n    function isSymbol(value) {\n      return typeof value == 'symbol' ||\n        (isObjectLike(value) && baseGetTag(value) == symbolTag);\n    }\n\n    /**\n     * Checks if `value` is classified as a typed array.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n     * @example\n     *\n     * _.isTypedArray(new Uint8Array);\n     * // => true\n     *\n     * _.isTypedArray([]);\n     * // => false\n     */\n    var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;\n\n    /**\n     * Checks if `value` is `undefined`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.\n     * @example\n     *\n     * _.isUndefined(void 0);\n     * // => true\n     *\n     * _.isUndefined(null);\n     * // => false\n     */\n    function isUndefined(value) {\n      return value === undefined;\n    }\n\n    /**\n     * Checks if `value` is classified as a `WeakMap` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.\n     * @example\n     *\n     * _.isWeakMap(new WeakMap);\n     * // => true\n     *\n     * _.isWeakMap(new Map);\n     * // => false\n     */\n    function isWeakMap(value) {\n      return isObjectLike(value) && getTag(value) == weakMapTag;\n    }\n\n    /**\n     * Checks if `value` is classified as a `WeakSet` object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.3.0\n     * @category Lang\n     * @param {*} value The value to check.\n     * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.\n     * @example\n     *\n     * _.isWeakSet(new WeakSet);\n     * // => true\n     *\n     * _.isWeakSet(new Set);\n     * // => false\n     */\n    function isWeakSet(value) {\n      return isObjectLike(value) && baseGetTag(value) == weakSetTag;\n    }\n\n    /**\n     * Checks if `value` is less than `other`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.9.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is less than `other`,\n     *  else `false`.\n     * @see _.gt\n     * @example\n     *\n     * _.lt(1, 3);\n     * // => true\n     *\n     * _.lt(3, 3);\n     * // => false\n     *\n     * _.lt(3, 1);\n     * // => false\n     */\n    var lt = createRelationalOperation(baseLt);\n\n    /**\n     * Checks if `value` is less than or equal to `other`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.9.0\n     * @category Lang\n     * @param {*} value The value to compare.\n     * @param {*} other The other value to compare.\n     * @returns {boolean} Returns `true` if `value` is less than or equal to\n     *  `other`, else `false`.\n     * @see _.gte\n     * @example\n     *\n     * _.lte(1, 3);\n     * // => true\n     *\n     * _.lte(3, 3);\n     * // => true\n     *\n     * _.lte(3, 1);\n     * // => false\n     */\n    var lte = createRelationalOperation(function(value, other) {\n      return value <= other;\n    });\n\n    /**\n     * Converts `value` to an array.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {Array} Returns the converted array.\n     * @example\n     *\n     * _.toArray({ 'a': 1, 'b': 2 });\n     * // => [1, 2]\n     *\n     * _.toArray('abc');\n     * // => ['a', 'b', 'c']\n     *\n     * _.toArray(1);\n     * // => []\n     *\n     * _.toArray(null);\n     * // => []\n     */\n    function toArray(value) {\n      if (!value) {\n        return [];\n      }\n      if (isArrayLike(value)) {\n        return isString(value) ? stringToArray(value) : copyArray(value);\n      }\n      if (symIterator && value[symIterator]) {\n        return iteratorToArray(value[symIterator]());\n      }\n      var tag = getTag(value),\n          func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);\n\n      return func(value);\n    }\n\n    /**\n     * Converts `value` to a finite number.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.12.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {number} Returns the converted number.\n     * @example\n     *\n     * _.toFinite(3.2);\n     * // => 3.2\n     *\n     * _.toFinite(Number.MIN_VALUE);\n     * // => 5e-324\n     *\n     * _.toFinite(Infinity);\n     * // => 1.7976931348623157e+308\n     *\n     * _.toFinite('3.2');\n     * // => 3.2\n     */\n    function toFinite(value) {\n      if (!value) {\n        return value === 0 ? value : 0;\n      }\n      value = toNumber(value);\n      if (value === INFINITY || value === -INFINITY) {\n        var sign = (value < 0 ? -1 : 1);\n        return sign * MAX_INTEGER;\n      }\n      return value === value ? value : 0;\n    }\n\n    /**\n     * Converts `value` to an integer.\n     *\n     * **Note:** This method is loosely based on\n     * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {number} Returns the converted integer.\n     * @example\n     *\n     * _.toInteger(3.2);\n     * // => 3\n     *\n     * _.toInteger(Number.MIN_VALUE);\n     * // => 0\n     *\n     * _.toInteger(Infinity);\n     * // => 1.7976931348623157e+308\n     *\n     * _.toInteger('3.2');\n     * // => 3\n     */\n    function toInteger(value) {\n      var result = toFinite(value),\n          remainder = result % 1;\n\n      return result === result ? (remainder ? result - remainder : result) : 0;\n    }\n\n    /**\n     * Converts `value` to an integer suitable for use as the length of an\n     * array-like object.\n     *\n     * **Note:** This method is based on\n     * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {number} Returns the converted integer.\n     * @example\n     *\n     * _.toLength(3.2);\n     * // => 3\n     *\n     * _.toLength(Number.MIN_VALUE);\n     * // => 0\n     *\n     * _.toLength(Infinity);\n     * // => 4294967295\n     *\n     * _.toLength('3.2');\n     * // => 3\n     */\n    function toLength(value) {\n      return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;\n    }\n\n    /**\n     * Converts `value` to a number.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to process.\n     * @returns {number} Returns the number.\n     * @example\n     *\n     * _.toNumber(3.2);\n     * // => 3.2\n     *\n     * _.toNumber(Number.MIN_VALUE);\n     * // => 5e-324\n     *\n     * _.toNumber(Infinity);\n     * // => Infinity\n     *\n     * _.toNumber('3.2');\n     * // => 3.2\n     */\n    function toNumber(value) {\n      if (typeof value == 'number') {\n        return value;\n      }\n      if (isSymbol(value)) {\n        return NAN;\n      }\n      if (isObject(value)) {\n        var other = typeof value.valueOf == 'function' ? value.valueOf() : value;\n        value = isObject(other) ? (other + '') : other;\n      }\n      if (typeof value != 'string') {\n        return value === 0 ? value : +value;\n      }\n      value = value.replace(reTrim, '');\n      var isBinary = reIsBinary.test(value);\n      return (isBinary || reIsOctal.test(value))\n        ? freeParseInt(value.slice(2), isBinary ? 2 : 8)\n        : (reIsBadHex.test(value) ? NAN : +value);\n    }\n\n    /**\n     * Converts `value` to a plain object flattening inherited enumerable string\n     * keyed properties of `value` to own properties of the plain object.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {Object} Returns the converted plain object.\n     * @example\n     *\n     * function Foo() {\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.assign({ 'a': 1 }, new Foo);\n     * // => { 'a': 1, 'b': 2 }\n     *\n     * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));\n     * // => { 'a': 1, 'b': 2, 'c': 3 }\n     */\n    function toPlainObject(value) {\n      return copyObject(value, keysIn(value));\n    }\n\n    /**\n     * Converts `value` to a safe integer. A safe integer can be compared and\n     * represented correctly.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {number} Returns the converted integer.\n     * @example\n     *\n     * _.toSafeInteger(3.2);\n     * // => 3\n     *\n     * _.toSafeInteger(Number.MIN_VALUE);\n     * // => 0\n     *\n     * _.toSafeInteger(Infinity);\n     * // => 9007199254740991\n     *\n     * _.toSafeInteger('3.2');\n     * // => 3\n     */\n    function toSafeInteger(value) {\n      return value\n        ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)\n        : (value === 0 ? value : 0);\n    }\n\n    /**\n     * Converts `value` to a string. An empty string is returned for `null`\n     * and `undefined` values. The sign of `-0` is preserved.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Lang\n     * @param {*} value The value to convert.\n     * @returns {string} Returns the converted string.\n     * @example\n     *\n     * _.toString(null);\n     * // => ''\n     *\n     * _.toString(-0);\n     * // => '-0'\n     *\n     * _.toString([1, 2, 3]);\n     * // => '1,2,3'\n     */\n    function toString(value) {\n      return value == null ? '' : baseToString(value);\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Assigns own enumerable string keyed properties of source objects to the\n     * destination object. Source objects are applied from left to right.\n     * Subsequent sources overwrite property assignments of previous sources.\n     *\n     * **Note:** This method mutates `object` and is loosely based on\n     * [`Object.assign`](https://mdn.io/Object/assign).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.10.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @see _.assignIn\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     * }\n     *\n     * function Bar() {\n     *   this.c = 3;\n     * }\n     *\n     * Foo.prototype.b = 2;\n     * Bar.prototype.d = 4;\n     *\n     * _.assign({ 'a': 0 }, new Foo, new Bar);\n     * // => { 'a': 1, 'c': 3 }\n     */\n    var assign = createAssigner(function(object, source) {\n      if (isPrototype(source) || isArrayLike(source)) {\n        copyObject(source, keys(source), object);\n        return;\n      }\n      for (var key in source) {\n        if (hasOwnProperty.call(source, key)) {\n          assignValue(object, key, source[key]);\n        }\n      }\n    });\n\n    /**\n     * This method is like `_.assign` except that it iterates over own and\n     * inherited source properties.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @alias extend\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @see _.assign\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     * }\n     *\n     * function Bar() {\n     *   this.c = 3;\n     * }\n     *\n     * Foo.prototype.b = 2;\n     * Bar.prototype.d = 4;\n     *\n     * _.assignIn({ 'a': 0 }, new Foo, new Bar);\n     * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }\n     */\n    var assignIn = createAssigner(function(object, source) {\n      copyObject(source, keysIn(source), object);\n    });\n\n    /**\n     * This method is like `_.assignIn` except that it accepts `customizer`\n     * which is invoked to produce the assigned values. If `customizer` returns\n     * `undefined`, assignment is handled by the method instead. The `customizer`\n     * is invoked with five arguments: (objValue, srcValue, key, object, source).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @alias extendWith\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} sources The source objects.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @see _.assignWith\n     * @example\n     *\n     * function customizer(objValue, srcValue) {\n     *   return _.isUndefined(objValue) ? srcValue : objValue;\n     * }\n     *\n     * var defaults = _.partialRight(_.assignInWith, customizer);\n     *\n     * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n     * // => { 'a': 1, 'b': 2 }\n     */\n    var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {\n      copyObject(source, keysIn(source), object, customizer);\n    });\n\n    /**\n     * This method is like `_.assign` except that it accepts `customizer`\n     * which is invoked to produce the assigned values. If `customizer` returns\n     * `undefined`, assignment is handled by the method instead. The `customizer`\n     * is invoked with five arguments: (objValue, srcValue, key, object, source).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} sources The source objects.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @see _.assignInWith\n     * @example\n     *\n     * function customizer(objValue, srcValue) {\n     *   return _.isUndefined(objValue) ? srcValue : objValue;\n     * }\n     *\n     * var defaults = _.partialRight(_.assignWith, customizer);\n     *\n     * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n     * // => { 'a': 1, 'b': 2 }\n     */\n    var assignWith = createAssigner(function(object, source, srcIndex, customizer) {\n      copyObject(source, keys(source), object, customizer);\n    });\n\n    /**\n     * Creates an array of values corresponding to `paths` of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.0.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {...(string|string[])} [paths] The property paths to pick.\n     * @returns {Array} Returns the picked values.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\n     *\n     * _.at(object, ['a[0].b.c', 'a[1]']);\n     * // => [3, 4]\n     */\n    var at = flatRest(baseAt);\n\n    /**\n     * Creates an object that inherits from the `prototype` object. If a\n     * `properties` object is given, its own enumerable string keyed properties\n     * are assigned to the created object.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.3.0\n     * @category Object\n     * @param {Object} prototype The object to inherit from.\n     * @param {Object} [properties] The properties to assign to the object.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * function Shape() {\n     *   this.x = 0;\n     *   this.y = 0;\n     * }\n     *\n     * function Circle() {\n     *   Shape.call(this);\n     * }\n     *\n     * Circle.prototype = _.create(Shape.prototype, {\n     *   'constructor': Circle\n     * });\n     *\n     * var circle = new Circle;\n     * circle instanceof Circle;\n     * // => true\n     *\n     * circle instanceof Shape;\n     * // => true\n     */\n    function create(prototype, properties) {\n      var result = baseCreate(prototype);\n      return properties == null ? result : baseAssign(result, properties);\n    }\n\n    /**\n     * Assigns own and inherited enumerable string keyed properties of source\n     * objects to the destination object for all destination properties that\n     * resolve to `undefined`. Source objects are applied from left to right.\n     * Once a property is set, additional values of the same property are ignored.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @see _.defaultsDeep\n     * @example\n     *\n     * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n     * // => { 'a': 1, 'b': 2 }\n     */\n    var defaults = baseRest(function(object, sources) {\n      object = Object(object);\n\n      var index = -1;\n      var length = sources.length;\n      var guard = length > 2 ? sources[2] : undefined;\n\n      if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n        length = 1;\n      }\n\n      while (++index < length) {\n        var source = sources[index];\n        var props = keysIn(source);\n        var propsIndex = -1;\n        var propsLength = props.length;\n\n        while (++propsIndex < propsLength) {\n          var key = props[propsIndex];\n          var value = object[key];\n\n          if (value === undefined ||\n              (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {\n            object[key] = source[key];\n          }\n        }\n      }\n\n      return object;\n    });\n\n    /**\n     * This method is like `_.defaults` except that it recursively assigns\n     * default properties.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.10.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @see _.defaults\n     * @example\n     *\n     * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });\n     * // => { 'a': { 'b': 2, 'c': 3 } }\n     */\n    var defaultsDeep = baseRest(function(args) {\n      args.push(undefined, customDefaultsMerge);\n      return apply(mergeWith, undefined, args);\n    });\n\n    /**\n     * This method is like `_.find` except that it returns the key of the first\n     * element `predicate` returns truthy for instead of the element itself.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.1.0\n     * @category Object\n     * @param {Object} object The object to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {string|undefined} Returns the key of the matched element,\n     *  else `undefined`.\n     * @example\n     *\n     * var users = {\n     *   'barney':  { 'age': 36, 'active': true },\n     *   'fred':    { 'age': 40, 'active': false },\n     *   'pebbles': { 'age': 1,  'active': true }\n     * };\n     *\n     * _.findKey(users, function(o) { return o.age < 40; });\n     * // => 'barney' (iteration order is not guaranteed)\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.findKey(users, { 'age': 1, 'active': true });\n     * // => 'pebbles'\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.findKey(users, ['active', false]);\n     * // => 'fred'\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.findKey(users, 'active');\n     * // => 'barney'\n     */\n    function findKey(object, predicate) {\n      return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);\n    }\n\n    /**\n     * This method is like `_.findKey` except that it iterates over elements of\n     * a collection in the opposite order.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Object\n     * @param {Object} object The object to inspect.\n     * @param {Function} [predicate=_.identity] The function invoked per iteration.\n     * @returns {string|undefined} Returns the key of the matched element,\n     *  else `undefined`.\n     * @example\n     *\n     * var users = {\n     *   'barney':  { 'age': 36, 'active': true },\n     *   'fred':    { 'age': 40, 'active': false },\n     *   'pebbles': { 'age': 1,  'active': true }\n     * };\n     *\n     * _.findLastKey(users, function(o) { return o.age < 40; });\n     * // => returns 'pebbles' assuming `_.findKey` returns 'barney'\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.findLastKey(users, { 'age': 36, 'active': true });\n     * // => 'barney'\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.findLastKey(users, ['active', false]);\n     * // => 'fred'\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.findLastKey(users, 'active');\n     * // => 'pebbles'\n     */\n    function findLastKey(object, predicate) {\n      return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);\n    }\n\n    /**\n     * Iterates over own and inherited enumerable string keyed properties of an\n     * object and invokes `iteratee` for each property. The iteratee is invoked\n     * with three arguments: (value, key, object). Iteratee functions may exit\n     * iteration early by explicitly returning `false`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.3.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     * @see _.forInRight\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.forIn(new Foo, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).\n     */\n    function forIn(object, iteratee) {\n      return object == null\n        ? object\n        : baseFor(object, getIteratee(iteratee, 3), keysIn);\n    }\n\n    /**\n     * This method is like `_.forIn` except that it iterates over properties of\n     * `object` in the opposite order.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     * @see _.forIn\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.forInRight(new Foo, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.\n     */\n    function forInRight(object, iteratee) {\n      return object == null\n        ? object\n        : baseForRight(object, getIteratee(iteratee, 3), keysIn);\n    }\n\n    /**\n     * Iterates over own enumerable string keyed properties of an object and\n     * invokes `iteratee` for each property. The iteratee is invoked with three\n     * arguments: (value, key, object). Iteratee functions may exit iteration\n     * early by explicitly returning `false`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.3.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     * @see _.forOwnRight\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.forOwn(new Foo, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'a' then 'b' (iteration order is not guaranteed).\n     */\n    function forOwn(object, iteratee) {\n      return object && baseForOwn(object, getIteratee(iteratee, 3));\n    }\n\n    /**\n     * This method is like `_.forOwn` except that it iterates over properties of\n     * `object` in the opposite order.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.0.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns `object`.\n     * @see _.forOwn\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.forOwnRight(new Foo, function(value, key) {\n     *   console.log(key);\n     * });\n     * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.\n     */\n    function forOwnRight(object, iteratee) {\n      return object && baseForOwnRight(object, getIteratee(iteratee, 3));\n    }\n\n    /**\n     * Creates an array of function property names from own enumerable properties\n     * of `object`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to inspect.\n     * @returns {Array} Returns the function names.\n     * @see _.functionsIn\n     * @example\n     *\n     * function Foo() {\n     *   this.a = _.constant('a');\n     *   this.b = _.constant('b');\n     * }\n     *\n     * Foo.prototype.c = _.constant('c');\n     *\n     * _.functions(new Foo);\n     * // => ['a', 'b']\n     */\n    function functions(object) {\n      return object == null ? [] : baseFunctions(object, keys(object));\n    }\n\n    /**\n     * Creates an array of function property names from own and inherited\n     * enumerable properties of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to inspect.\n     * @returns {Array} Returns the function names.\n     * @see _.functions\n     * @example\n     *\n     * function Foo() {\n     *   this.a = _.constant('a');\n     *   this.b = _.constant('b');\n     * }\n     *\n     * Foo.prototype.c = _.constant('c');\n     *\n     * _.functionsIn(new Foo);\n     * // => ['a', 'b', 'c']\n     */\n    function functionsIn(object) {\n      return object == null ? [] : baseFunctions(object, keysIn(object));\n    }\n\n    /**\n     * Gets the value at `path` of `object`. If the resolved value is\n     * `undefined`, the `defaultValue` is returned in its place.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.7.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the property to get.\n     * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n     * @returns {*} Returns the resolved value.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n     *\n     * _.get(object, 'a[0].b.c');\n     * // => 3\n     *\n     * _.get(object, ['a', '0', 'b', 'c']);\n     * // => 3\n     *\n     * _.get(object, 'a.b.c', 'default');\n     * // => 'default'\n     */\n    function get(object, path, defaultValue) {\n      var result = object == null ? undefined : baseGet(object, path);\n      return result === undefined ? defaultValue : result;\n    }\n\n    /**\n     * Checks if `path` is a direct property of `object`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path to check.\n     * @returns {boolean} Returns `true` if `path` exists, else `false`.\n     * @example\n     *\n     * var object = { 'a': { 'b': 2 } };\n     * var other = _.create({ 'a': _.create({ 'b': 2 }) });\n     *\n     * _.has(object, 'a');\n     * // => true\n     *\n     * _.has(object, 'a.b');\n     * // => true\n     *\n     * _.has(object, ['a', 'b']);\n     * // => true\n     *\n     * _.has(other, 'a');\n     * // => false\n     */\n    function has(object, path) {\n      return object != null && hasPath(object, path, baseHas);\n    }\n\n    /**\n     * Checks if `path` is a direct or inherited property of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path to check.\n     * @returns {boolean} Returns `true` if `path` exists, else `false`.\n     * @example\n     *\n     * var object = _.create({ 'a': _.create({ 'b': 2 }) });\n     *\n     * _.hasIn(object, 'a');\n     * // => true\n     *\n     * _.hasIn(object, 'a.b');\n     * // => true\n     *\n     * _.hasIn(object, ['a', 'b']);\n     * // => true\n     *\n     * _.hasIn(object, 'b');\n     * // => false\n     */\n    function hasIn(object, path) {\n      return object != null && hasPath(object, path, baseHasIn);\n    }\n\n    /**\n     * Creates an object composed of the inverted keys and values of `object`.\n     * If `object` contains duplicate values, subsequent values overwrite\n     * property assignments of previous values.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.7.0\n     * @category Object\n     * @param {Object} object The object to invert.\n     * @returns {Object} Returns the new inverted object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2, 'c': 1 };\n     *\n     * _.invert(object);\n     * // => { '1': 'c', '2': 'b' }\n     */\n    var invert = createInverter(function(result, value, key) {\n      if (value != null &&\n          typeof value.toString != 'function') {\n        value = nativeObjectToString.call(value);\n      }\n\n      result[value] = key;\n    }, constant(identity));\n\n    /**\n     * This method is like `_.invert` except that the inverted object is generated\n     * from the results of running each element of `object` thru `iteratee`. The\n     * corresponding inverted value of each inverted key is an array of keys\n     * responsible for generating the inverted value. The iteratee is invoked\n     * with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.1.0\n     * @category Object\n     * @param {Object} object The object to invert.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {Object} Returns the new inverted object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': 2, 'c': 1 };\n     *\n     * _.invertBy(object);\n     * // => { '1': ['a', 'c'], '2': ['b'] }\n     *\n     * _.invertBy(object, function(value) {\n     *   return 'group' + value;\n     * });\n     * // => { 'group1': ['a', 'c'], 'group2': ['b'] }\n     */\n    var invertBy = createInverter(function(result, value, key) {\n      if (value != null &&\n          typeof value.toString != 'function') {\n        value = nativeObjectToString.call(value);\n      }\n\n      if (hasOwnProperty.call(result, value)) {\n        result[value].push(key);\n      } else {\n        result[value] = [key];\n      }\n    }, getIteratee);\n\n    /**\n     * Invokes the method at `path` of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the method to invoke.\n     * @param {...*} [args] The arguments to invoke the method with.\n     * @returns {*} Returns the result of the invoked method.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };\n     *\n     * _.invoke(object, 'a[0].b.c.slice', 1, 3);\n     * // => [2, 3]\n     */\n    var invoke = baseRest(baseInvoke);\n\n    /**\n     * Creates an array of the own enumerable property names of `object`.\n     *\n     * **Note:** Non-object values are coerced to objects. See the\n     * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n     * for more details.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.keys(new Foo);\n     * // => ['a', 'b'] (iteration order is not guaranteed)\n     *\n     * _.keys('hi');\n     * // => ['0', '1']\n     */\n    function keys(object) {\n      return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);\n    }\n\n    /**\n     * Creates an array of the own and inherited enumerable property names of `object`.\n     *\n     * **Note:** Non-object values are coerced to objects.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property names.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.keysIn(new Foo);\n     * // => ['a', 'b', 'c'] (iteration order is not guaranteed)\n     */\n    function keysIn(object) {\n      return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);\n    }\n\n    /**\n     * The opposite of `_.mapValues`; this method creates an object with the\n     * same values as `object` and keys generated by running each own enumerable\n     * string keyed property of `object` thru `iteratee`. The iteratee is invoked\n     * with three arguments: (value, key, object).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.8.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns the new mapped object.\n     * @see _.mapValues\n     * @example\n     *\n     * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {\n     *   return key + value;\n     * });\n     * // => { 'a1': 1, 'b2': 2 }\n     */\n    function mapKeys(object, iteratee) {\n      var result = {};\n      iteratee = getIteratee(iteratee, 3);\n\n      baseForOwn(object, function(value, key, object) {\n        baseAssignValue(result, iteratee(value, key, object), value);\n      });\n      return result;\n    }\n\n    /**\n     * Creates an object with the same keys as `object` and values generated\n     * by running each own enumerable string keyed property of `object` thru\n     * `iteratee`. The iteratee is invoked with three arguments:\n     * (value, key, object).\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Object} Returns the new mapped object.\n     * @see _.mapKeys\n     * @example\n     *\n     * var users = {\n     *   'fred':    { 'user': 'fred',    'age': 40 },\n     *   'pebbles': { 'user': 'pebbles', 'age': 1 }\n     * };\n     *\n     * _.mapValues(users, function(o) { return o.age; });\n     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.mapValues(users, 'age');\n     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n     */\n    function mapValues(object, iteratee) {\n      var result = {};\n      iteratee = getIteratee(iteratee, 3);\n\n      baseForOwn(object, function(value, key, object) {\n        baseAssignValue(result, key, iteratee(value, key, object));\n      });\n      return result;\n    }\n\n    /**\n     * This method is like `_.assign` except that it recursively merges own and\n     * inherited enumerable string keyed properties of source objects into the\n     * destination object. Source properties that resolve to `undefined` are\n     * skipped if a destination value exists. Array and plain object properties\n     * are merged recursively. Other objects and value types are overridden by\n     * assignment. Source objects are applied from left to right. Subsequent\n     * sources overwrite property assignments of previous sources.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.5.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} [sources] The source objects.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = {\n     *   'a': [{ 'b': 2 }, { 'd': 4 }]\n     * };\n     *\n     * var other = {\n     *   'a': [{ 'c': 3 }, { 'e': 5 }]\n     * };\n     *\n     * _.merge(object, other);\n     * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }\n     */\n    var merge = createAssigner(function(object, source, srcIndex) {\n      baseMerge(object, source, srcIndex);\n    });\n\n    /**\n     * This method is like `_.merge` except that it accepts `customizer` which\n     * is invoked to produce the merged values of the destination and source\n     * properties. If `customizer` returns `undefined`, merging is handled by the\n     * method instead. The `customizer` is invoked with six arguments:\n     * (objValue, srcValue, key, object, source, stack).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The destination object.\n     * @param {...Object} sources The source objects.\n     * @param {Function} customizer The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * function customizer(objValue, srcValue) {\n     *   if (_.isArray(objValue)) {\n     *     return objValue.concat(srcValue);\n     *   }\n     * }\n     *\n     * var object = { 'a': [1], 'b': [2] };\n     * var other = { 'a': [3], 'b': [4] };\n     *\n     * _.mergeWith(object, other, customizer);\n     * // => { 'a': [1, 3], 'b': [2, 4] }\n     */\n    var mergeWith = createAssigner(function(object, source, srcIndex, customizer) {\n      baseMerge(object, source, srcIndex, customizer);\n    });\n\n    /**\n     * The opposite of `_.pick`; this method creates an object composed of the\n     * own and inherited enumerable property paths of `object` that are not omitted.\n     *\n     * **Note:** This method is considerably slower than `_.pick`.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The source object.\n     * @param {...(string|string[])} [paths] The property paths to omit.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': '2', 'c': 3 };\n     *\n     * _.omit(object, ['a', 'c']);\n     * // => { 'b': '2' }\n     */\n    var omit = flatRest(function(object, paths) {\n      var result = {};\n      if (object == null) {\n        return result;\n      }\n      var isDeep = false;\n      paths = arrayMap(paths, function(path) {\n        path = castPath(path, object);\n        isDeep || (isDeep = path.length > 1);\n        return path;\n      });\n      copyObject(object, getAllKeysIn(object), result);\n      if (isDeep) {\n        result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);\n      }\n      var length = paths.length;\n      while (length--) {\n        baseUnset(result, paths[length]);\n      }\n      return result;\n    });\n\n    /**\n     * The opposite of `_.pickBy`; this method creates an object composed of\n     * the own and inherited enumerable string keyed properties of `object` that\n     * `predicate` doesn't return truthy for. The predicate is invoked with two\n     * arguments: (value, key).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The source object.\n     * @param {Function} [predicate=_.identity] The function invoked per property.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': '2', 'c': 3 };\n     *\n     * _.omitBy(object, _.isNumber);\n     * // => { 'b': '2' }\n     */\n    function omitBy(object, predicate) {\n      return pickBy(object, negate(getIteratee(predicate)));\n    }\n\n    /**\n     * Creates an object composed of the picked `object` properties.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The source object.\n     * @param {...(string|string[])} [paths] The property paths to pick.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': '2', 'c': 3 };\n     *\n     * _.pick(object, ['a', 'c']);\n     * // => { 'a': 1, 'c': 3 }\n     */\n    var pick = flatRest(function(object, paths) {\n      return object == null ? {} : basePick(object, paths);\n    });\n\n    /**\n     * Creates an object composed of the `object` properties `predicate` returns\n     * truthy for. The predicate is invoked with two arguments: (value, key).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The source object.\n     * @param {Function} [predicate=_.identity] The function invoked per property.\n     * @returns {Object} Returns the new object.\n     * @example\n     *\n     * var object = { 'a': 1, 'b': '2', 'c': 3 };\n     *\n     * _.pickBy(object, _.isNumber);\n     * // => { 'a': 1, 'c': 3 }\n     */\n    function pickBy(object, predicate) {\n      if (object == null) {\n        return {};\n      }\n      var props = arrayMap(getAllKeysIn(object), function(prop) {\n        return [prop];\n      });\n      predicate = getIteratee(predicate);\n      return basePickBy(object, props, function(value, path) {\n        return predicate(value, path[0]);\n      });\n    }\n\n    /**\n     * This method is like `_.get` except that if the resolved value is a\n     * function it's invoked with the `this` binding of its parent object and\n     * its result is returned.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to query.\n     * @param {Array|string} path The path of the property to resolve.\n     * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n     * @returns {*} Returns the resolved value.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };\n     *\n     * _.result(object, 'a[0].b.c1');\n     * // => 3\n     *\n     * _.result(object, 'a[0].b.c2');\n     * // => 4\n     *\n     * _.result(object, 'a[0].b.c3', 'default');\n     * // => 'default'\n     *\n     * _.result(object, 'a[0].b.c3', _.constant('default'));\n     * // => 'default'\n     */\n    function result(object, path, defaultValue) {\n      path = castPath(path, object);\n\n      var index = -1,\n          length = path.length;\n\n      // Ensure the loop is entered when path is empty.\n      if (!length) {\n        length = 1;\n        object = undefined;\n      }\n      while (++index < length) {\n        var value = object == null ? undefined : object[toKey(path[index])];\n        if (value === undefined) {\n          index = length;\n          value = defaultValue;\n        }\n        object = isFunction(value) ? value.call(object) : value;\n      }\n      return object;\n    }\n\n    /**\n     * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,\n     * it's created. Arrays are created for missing index properties while objects\n     * are created for all other missing properties. Use `_.setWith` to customize\n     * `path` creation.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.7.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {*} value The value to set.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n     *\n     * _.set(object, 'a[0].b.c', 4);\n     * console.log(object.a[0].b.c);\n     * // => 4\n     *\n     * _.set(object, ['x', '0', 'y', 'z'], 5);\n     * console.log(object.x[0].y.z);\n     * // => 5\n     */\n    function set(object, path, value) {\n      return object == null ? object : baseSet(object, path, value);\n    }\n\n    /**\n     * This method is like `_.set` except that it accepts `customizer` which is\n     * invoked to produce the objects of `path`.  If `customizer` returns `undefined`\n     * path creation is handled by the method instead. The `customizer` is invoked\n     * with three arguments: (nsValue, key, nsObject).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {*} value The value to set.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = {};\n     *\n     * _.setWith(object, '[0][1]', 'a', Object);\n     * // => { '0': { '1': 'a' } }\n     */\n    function setWith(object, path, value, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return object == null ? object : baseSet(object, path, value, customizer);\n    }\n\n    /**\n     * Creates an array of own enumerable string keyed-value pairs for `object`\n     * which can be consumed by `_.fromPairs`. If `object` is a map or set, its\n     * entries are returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @alias entries\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the key-value pairs.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.toPairs(new Foo);\n     * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)\n     */\n    var toPairs = createToPairs(keys);\n\n    /**\n     * Creates an array of own and inherited enumerable string keyed-value pairs\n     * for `object` which can be consumed by `_.fromPairs`. If `object` is a map\n     * or set, its entries are returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @alias entriesIn\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the key-value pairs.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.toPairsIn(new Foo);\n     * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)\n     */\n    var toPairsIn = createToPairs(keysIn);\n\n    /**\n     * An alternative to `_.reduce`; this method transforms `object` to a new\n     * `accumulator` object which is the result of running each of its own\n     * enumerable string keyed properties thru `iteratee`, with each invocation\n     * potentially mutating the `accumulator` object. If `accumulator` is not\n     * provided, a new object with the same `[[Prototype]]` will be used. The\n     * iteratee is invoked with four arguments: (accumulator, value, key, object).\n     * Iteratee functions may exit iteration early by explicitly returning `false`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.3.0\n     * @category Object\n     * @param {Object} object The object to iterate over.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @param {*} [accumulator] The custom accumulator value.\n     * @returns {*} Returns the accumulated value.\n     * @example\n     *\n     * _.transform([2, 3, 4], function(result, n) {\n     *   result.push(n *= n);\n     *   return n % 2 == 0;\n     * }, []);\n     * // => [4, 9]\n     *\n     * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n     *   (result[value] || (result[value] = [])).push(key);\n     * }, {});\n     * // => { '1': ['a', 'c'], '2': ['b'] }\n     */\n    function transform(object, iteratee, accumulator) {\n      var isArr = isArray(object),\n          isArrLike = isArr || isBuffer(object) || isTypedArray(object);\n\n      iteratee = getIteratee(iteratee, 4);\n      if (accumulator == null) {\n        var Ctor = object && object.constructor;\n        if (isArrLike) {\n          accumulator = isArr ? new Ctor : [];\n        }\n        else if (isObject(object)) {\n          accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};\n        }\n        else {\n          accumulator = {};\n        }\n      }\n      (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) {\n        return iteratee(accumulator, value, index, object);\n      });\n      return accumulator;\n    }\n\n    /**\n     * Removes the property at `path` of `object`.\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to unset.\n     * @returns {boolean} Returns `true` if the property is deleted, else `false`.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 7 } }] };\n     * _.unset(object, 'a[0].b.c');\n     * // => true\n     *\n     * console.log(object);\n     * // => { 'a': [{ 'b': {} }] };\n     *\n     * _.unset(object, ['a', '0', 'b', 'c']);\n     * // => true\n     *\n     * console.log(object);\n     * // => { 'a': [{ 'b': {} }] };\n     */\n    function unset(object, path) {\n      return object == null ? true : baseUnset(object, path);\n    }\n\n    /**\n     * This method is like `_.set` except that accepts `updater` to produce the\n     * value to set. Use `_.updateWith` to customize `path` creation. The `updater`\n     * is invoked with one argument: (value).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.6.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {Function} updater The function to produce the updated value.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n     *\n     * _.update(object, 'a[0].b.c', function(n) { return n * n; });\n     * console.log(object.a[0].b.c);\n     * // => 9\n     *\n     * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });\n     * console.log(object.x[0].y.z);\n     * // => 0\n     */\n    function update(object, path, updater) {\n      return object == null ? object : baseUpdate(object, path, castFunction(updater));\n    }\n\n    /**\n     * This method is like `_.update` except that it accepts `customizer` which is\n     * invoked to produce the objects of `path`.  If `customizer` returns `undefined`\n     * path creation is handled by the method instead. The `customizer` is invoked\n     * with three arguments: (nsValue, key, nsObject).\n     *\n     * **Note:** This method mutates `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.6.0\n     * @category Object\n     * @param {Object} object The object to modify.\n     * @param {Array|string} path The path of the property to set.\n     * @param {Function} updater The function to produce the updated value.\n     * @param {Function} [customizer] The function to customize assigned values.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var object = {};\n     *\n     * _.updateWith(object, '[0][1]', _.constant('a'), Object);\n     * // => { '0': { '1': 'a' } }\n     */\n    function updateWith(object, path, updater, customizer) {\n      customizer = typeof customizer == 'function' ? customizer : undefined;\n      return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);\n    }\n\n    /**\n     * Creates an array of the own enumerable string keyed property values of `object`.\n     *\n     * **Note:** Non-object values are coerced to objects.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property values.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.values(new Foo);\n     * // => [1, 2] (iteration order is not guaranteed)\n     *\n     * _.values('hi');\n     * // => ['h', 'i']\n     */\n    function values(object) {\n      return object == null ? [] : baseValues(object, keys(object));\n    }\n\n    /**\n     * Creates an array of the own and inherited enumerable string keyed property\n     * values of `object`.\n     *\n     * **Note:** Non-object values are coerced to objects.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Object\n     * @param {Object} object The object to query.\n     * @returns {Array} Returns the array of property values.\n     * @example\n     *\n     * function Foo() {\n     *   this.a = 1;\n     *   this.b = 2;\n     * }\n     *\n     * Foo.prototype.c = 3;\n     *\n     * _.valuesIn(new Foo);\n     * // => [1, 2, 3] (iteration order is not guaranteed)\n     */\n    function valuesIn(object) {\n      return object == null ? [] : baseValues(object, keysIn(object));\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Clamps `number` within the inclusive `lower` and `upper` bounds.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Number\n     * @param {number} number The number to clamp.\n     * @param {number} [lower] The lower bound.\n     * @param {number} upper The upper bound.\n     * @returns {number} Returns the clamped number.\n     * @example\n     *\n     * _.clamp(-10, -5, 5);\n     * // => -5\n     *\n     * _.clamp(10, -5, 5);\n     * // => 5\n     */\n    function clamp(number, lower, upper) {\n      if (upper === undefined) {\n        upper = lower;\n        lower = undefined;\n      }\n      if (upper !== undefined) {\n        upper = toNumber(upper);\n        upper = upper === upper ? upper : 0;\n      }\n      if (lower !== undefined) {\n        lower = toNumber(lower);\n        lower = lower === lower ? lower : 0;\n      }\n      return baseClamp(toNumber(number), lower, upper);\n    }\n\n    /**\n     * Checks if `n` is between `start` and up to, but not including, `end`. If\n     * `end` is not specified, it's set to `start` with `start` then set to `0`.\n     * If `start` is greater than `end` the params are swapped to support\n     * negative ranges.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.3.0\n     * @category Number\n     * @param {number} number The number to check.\n     * @param {number} [start=0] The start of the range.\n     * @param {number} end The end of the range.\n     * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\n     * @see _.range, _.rangeRight\n     * @example\n     *\n     * _.inRange(3, 2, 4);\n     * // => true\n     *\n     * _.inRange(4, 8);\n     * // => true\n     *\n     * _.inRange(4, 2);\n     * // => false\n     *\n     * _.inRange(2, 2);\n     * // => false\n     *\n     * _.inRange(1.2, 2);\n     * // => true\n     *\n     * _.inRange(5.2, 4);\n     * // => false\n     *\n     * _.inRange(-3, -2, -6);\n     * // => true\n     */\n    function inRange(number, start, end) {\n      start = toFinite(start);\n      if (end === undefined) {\n        end = start;\n        start = 0;\n      } else {\n        end = toFinite(end);\n      }\n      number = toNumber(number);\n      return baseInRange(number, start, end);\n    }\n\n    /**\n     * Produces a random number between the inclusive `lower` and `upper` bounds.\n     * If only one argument is provided a number between `0` and the given number\n     * is returned. If `floating` is `true`, or either `lower` or `upper` are\n     * floats, a floating-point number is returned instead of an integer.\n     *\n     * **Note:** JavaScript follows the IEEE-754 standard for resolving\n     * floating-point values which can produce unexpected results.\n     *\n     * @static\n     * @memberOf _\n     * @since 0.7.0\n     * @category Number\n     * @param {number} [lower=0] The lower bound.\n     * @param {number} [upper=1] The upper bound.\n     * @param {boolean} [floating] Specify returning a floating-point number.\n     * @returns {number} Returns the random number.\n     * @example\n     *\n     * _.random(0, 5);\n     * // => an integer between 0 and 5\n     *\n     * _.random(5);\n     * // => also an integer between 0 and 5\n     *\n     * _.random(5, true);\n     * // => a floating-point number between 0 and 5\n     *\n     * _.random(1.2, 5.2);\n     * // => a floating-point number between 1.2 and 5.2\n     */\n    function random(lower, upper, floating) {\n      if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {\n        upper = floating = undefined;\n      }\n      if (floating === undefined) {\n        if (typeof upper == 'boolean') {\n          floating = upper;\n          upper = undefined;\n        }\n        else if (typeof lower == 'boolean') {\n          floating = lower;\n          lower = undefined;\n        }\n      }\n      if (lower === undefined && upper === undefined) {\n        lower = 0;\n        upper = 1;\n      }\n      else {\n        lower = toFinite(lower);\n        if (upper === undefined) {\n          upper = lower;\n          lower = 0;\n        } else {\n          upper = toFinite(upper);\n        }\n      }\n      if (lower > upper) {\n        var temp = lower;\n        lower = upper;\n        upper = temp;\n      }\n      if (floating || lower % 1 || upper % 1) {\n        var rand = nativeRandom();\n        return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper);\n      }\n      return baseRandom(lower, upper);\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the camel cased string.\n     * @example\n     *\n     * _.camelCase('Foo Bar');\n     * // => 'fooBar'\n     *\n     * _.camelCase('--foo-bar--');\n     * // => 'fooBar'\n     *\n     * _.camelCase('__FOO_BAR__');\n     * // => 'fooBar'\n     */\n    var camelCase = createCompounder(function(result, word, index) {\n      word = word.toLowerCase();\n      return result + (index ? capitalize(word) : word);\n    });\n\n    /**\n     * Converts the first character of `string` to upper case and the remaining\n     * to lower case.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to capitalize.\n     * @returns {string} Returns the capitalized string.\n     * @example\n     *\n     * _.capitalize('FRED');\n     * // => 'Fred'\n     */\n    function capitalize(string) {\n      return upperFirst(toString(string).toLowerCase());\n    }\n\n    /**\n     * Deburrs `string` by converting\n     * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)\n     * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)\n     * letters to basic Latin letters and removing\n     * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to deburr.\n     * @returns {string} Returns the deburred string.\n     * @example\n     *\n     * _.deburr('déjà vu');\n     * // => 'deja vu'\n     */\n    function deburr(string) {\n      string = toString(string);\n      return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');\n    }\n\n    /**\n     * Checks if `string` ends with the given target string.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to inspect.\n     * @param {string} [target] The string to search for.\n     * @param {number} [position=string.length] The position to search up to.\n     * @returns {boolean} Returns `true` if `string` ends with `target`,\n     *  else `false`.\n     * @example\n     *\n     * _.endsWith('abc', 'c');\n     * // => true\n     *\n     * _.endsWith('abc', 'b');\n     * // => false\n     *\n     * _.endsWith('abc', 'b', 2);\n     * // => true\n     */\n    function endsWith(string, target, position) {\n      string = toString(string);\n      target = baseToString(target);\n\n      var length = string.length;\n      position = position === undefined\n        ? length\n        : baseClamp(toInteger(position), 0, length);\n\n      var end = position;\n      position -= target.length;\n      return position >= 0 && string.slice(position, end) == target;\n    }\n\n    /**\n     * Converts the characters \"&\", \"<\", \">\", '\"', and \"'\" in `string` to their\n     * corresponding HTML entities.\n     *\n     * **Note:** No other characters are escaped. To escape additional\n     * characters use a third-party library like [_he_](https://mths.be/he).\n     *\n     * Though the \">\" character is escaped for symmetry, characters like\n     * \">\" and \"/\" don't need escaping in HTML and have no special meaning\n     * unless they're part of a tag or unquoted attribute value. See\n     * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)\n     * (under \"semi-related fun fact\") for more details.\n     *\n     * When working with HTML you should always\n     * [quote attribute values](http://wonko.com/post/html-escaping) to reduce\n     * XSS vectors.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category String\n     * @param {string} [string=''] The string to escape.\n     * @returns {string} Returns the escaped string.\n     * @example\n     *\n     * _.escape('fred, barney, & pebbles');\n     * // => 'fred, barney, &amp; pebbles'\n     */\n    function escape(string) {\n      string = toString(string);\n      return (string && reHasUnescapedHtml.test(string))\n        ? string.replace(reUnescapedHtml, escapeHtmlChar)\n        : string;\n    }\n\n    /**\n     * Escapes the `RegExp` special characters \"^\", \"$\", \"\\\", \".\", \"*\", \"+\",\n     * \"?\", \"(\", \")\", \"[\", \"]\", \"{\", \"}\", and \"|\" in `string`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to escape.\n     * @returns {string} Returns the escaped string.\n     * @example\n     *\n     * _.escapeRegExp('[lodash](https://lodash.com/)');\n     * // => '\\[lodash\\]\\(https://lodash\\.com/\\)'\n     */\n    function escapeRegExp(string) {\n      string = toString(string);\n      return (string && reHasRegExpChar.test(string))\n        ? string.replace(reRegExpChar, '\\\\$&')\n        : string;\n    }\n\n    /**\n     * Converts `string` to\n     * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the kebab cased string.\n     * @example\n     *\n     * _.kebabCase('Foo Bar');\n     * // => 'foo-bar'\n     *\n     * _.kebabCase('fooBar');\n     * // => 'foo-bar'\n     *\n     * _.kebabCase('__FOO_BAR__');\n     * // => 'foo-bar'\n     */\n    var kebabCase = createCompounder(function(result, word, index) {\n      return result + (index ? '-' : '') + word.toLowerCase();\n    });\n\n    /**\n     * Converts `string`, as space separated words, to lower case.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the lower cased string.\n     * @example\n     *\n     * _.lowerCase('--Foo-Bar--');\n     * // => 'foo bar'\n     *\n     * _.lowerCase('fooBar');\n     * // => 'foo bar'\n     *\n     * _.lowerCase('__FOO_BAR__');\n     * // => 'foo bar'\n     */\n    var lowerCase = createCompounder(function(result, word, index) {\n      return result + (index ? ' ' : '') + word.toLowerCase();\n    });\n\n    /**\n     * Converts the first character of `string` to lower case.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the converted string.\n     * @example\n     *\n     * _.lowerFirst('Fred');\n     * // => 'fred'\n     *\n     * _.lowerFirst('FRED');\n     * // => 'fRED'\n     */\n    var lowerFirst = createCaseFirst('toLowerCase');\n\n    /**\n     * Pads `string` on the left and right sides if it's shorter than `length`.\n     * Padding characters are truncated if they can't be evenly divided by `length`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to pad.\n     * @param {number} [length=0] The padding length.\n     * @param {string} [chars=' '] The string used as padding.\n     * @returns {string} Returns the padded string.\n     * @example\n     *\n     * _.pad('abc', 8);\n     * // => '  abc   '\n     *\n     * _.pad('abc', 8, '_-');\n     * // => '_-abc_-_'\n     *\n     * _.pad('abc', 3);\n     * // => 'abc'\n     */\n    function pad(string, length, chars) {\n      string = toString(string);\n      length = toInteger(length);\n\n      var strLength = length ? stringSize(string) : 0;\n      if (!length || strLength >= length) {\n        return string;\n      }\n      var mid = (length - strLength) / 2;\n      return (\n        createPadding(nativeFloor(mid), chars) +\n        string +\n        createPadding(nativeCeil(mid), chars)\n      );\n    }\n\n    /**\n     * Pads `string` on the right side if it's shorter than `length`. Padding\n     * characters are truncated if they exceed `length`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to pad.\n     * @param {number} [length=0] The padding length.\n     * @param {string} [chars=' '] The string used as padding.\n     * @returns {string} Returns the padded string.\n     * @example\n     *\n     * _.padEnd('abc', 6);\n     * // => 'abc   '\n     *\n     * _.padEnd('abc', 6, '_-');\n     * // => 'abc_-_'\n     *\n     * _.padEnd('abc', 3);\n     * // => 'abc'\n     */\n    function padEnd(string, length, chars) {\n      string = toString(string);\n      length = toInteger(length);\n\n      var strLength = length ? stringSize(string) : 0;\n      return (length && strLength < length)\n        ? (string + createPadding(length - strLength, chars))\n        : string;\n    }\n\n    /**\n     * Pads `string` on the left side if it's shorter than `length`. Padding\n     * characters are truncated if they exceed `length`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to pad.\n     * @param {number} [length=0] The padding length.\n     * @param {string} [chars=' '] The string used as padding.\n     * @returns {string} Returns the padded string.\n     * @example\n     *\n     * _.padStart('abc', 6);\n     * // => '   abc'\n     *\n     * _.padStart('abc', 6, '_-');\n     * // => '_-_abc'\n     *\n     * _.padStart('abc', 3);\n     * // => 'abc'\n     */\n    function padStart(string, length, chars) {\n      string = toString(string);\n      length = toInteger(length);\n\n      var strLength = length ? stringSize(string) : 0;\n      return (length && strLength < length)\n        ? (createPadding(length - strLength, chars) + string)\n        : string;\n    }\n\n    /**\n     * Converts `string` to an integer of the specified radix. If `radix` is\n     * `undefined` or `0`, a `radix` of `10` is used unless `value` is a\n     * hexadecimal, in which case a `radix` of `16` is used.\n     *\n     * **Note:** This method aligns with the\n     * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.\n     *\n     * @static\n     * @memberOf _\n     * @since 1.1.0\n     * @category String\n     * @param {string} string The string to convert.\n     * @param {number} [radix=10] The radix to interpret `value` by.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {number} Returns the converted integer.\n     * @example\n     *\n     * _.parseInt('08');\n     * // => 8\n     *\n     * _.map(['6', '08', '10'], _.parseInt);\n     * // => [6, 8, 10]\n     */\n    function parseInt(string, radix, guard) {\n      if (guard || radix == null) {\n        radix = 0;\n      } else if (radix) {\n        radix = +radix;\n      }\n      return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);\n    }\n\n    /**\n     * Repeats the given string `n` times.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to repeat.\n     * @param {number} [n=1] The number of times to repeat the string.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {string} Returns the repeated string.\n     * @example\n     *\n     * _.repeat('*', 3);\n     * // => '***'\n     *\n     * _.repeat('abc', 2);\n     * // => 'abcabc'\n     *\n     * _.repeat('abc', 0);\n     * // => ''\n     */\n    function repeat(string, n, guard) {\n      if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) {\n        n = 1;\n      } else {\n        n = toInteger(n);\n      }\n      return baseRepeat(toString(string), n);\n    }\n\n    /**\n     * Replaces matches for `pattern` in `string` with `replacement`.\n     *\n     * **Note:** This method is based on\n     * [`String#replace`](https://mdn.io/String/replace).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to modify.\n     * @param {RegExp|string} pattern The pattern to replace.\n     * @param {Function|string} replacement The match replacement.\n     * @returns {string} Returns the modified string.\n     * @example\n     *\n     * _.replace('Hi Fred', 'Fred', 'Barney');\n     * // => 'Hi Barney'\n     */\n    function replace() {\n      var args = arguments,\n          string = toString(args[0]);\n\n      return args.length < 3 ? string : string.replace(args[1], args[2]);\n    }\n\n    /**\n     * Converts `string` to\n     * [snake case](https://en.wikipedia.org/wiki/Snake_case).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the snake cased string.\n     * @example\n     *\n     * _.snakeCase('Foo Bar');\n     * // => 'foo_bar'\n     *\n     * _.snakeCase('fooBar');\n     * // => 'foo_bar'\n     *\n     * _.snakeCase('--FOO-BAR--');\n     * // => 'foo_bar'\n     */\n    var snakeCase = createCompounder(function(result, word, index) {\n      return result + (index ? '_' : '') + word.toLowerCase();\n    });\n\n    /**\n     * Splits `string` by `separator`.\n     *\n     * **Note:** This method is based on\n     * [`String#split`](https://mdn.io/String/split).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to split.\n     * @param {RegExp|string} separator The separator pattern to split by.\n     * @param {number} [limit] The length to truncate results to.\n     * @returns {Array} Returns the string segments.\n     * @example\n     *\n     * _.split('a-b-c', '-', 2);\n     * // => ['a', 'b']\n     */\n    function split(string, separator, limit) {\n      if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {\n        separator = limit = undefined;\n      }\n      limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;\n      if (!limit) {\n        return [];\n      }\n      string = toString(string);\n      if (string && (\n            typeof separator == 'string' ||\n            (separator != null && !isRegExp(separator))\n          )) {\n        separator = baseToString(separator);\n        if (!separator && hasUnicode(string)) {\n          return castSlice(stringToArray(string), 0, limit);\n        }\n      }\n      return string.split(separator, limit);\n    }\n\n    /**\n     * Converts `string` to\n     * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).\n     *\n     * @static\n     * @memberOf _\n     * @since 3.1.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the start cased string.\n     * @example\n     *\n     * _.startCase('--foo-bar--');\n     * // => 'Foo Bar'\n     *\n     * _.startCase('fooBar');\n     * // => 'Foo Bar'\n     *\n     * _.startCase('__FOO_BAR__');\n     * // => 'FOO BAR'\n     */\n    var startCase = createCompounder(function(result, word, index) {\n      return result + (index ? ' ' : '') + upperFirst(word);\n    });\n\n    /**\n     * Checks if `string` starts with the given target string.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to inspect.\n     * @param {string} [target] The string to search for.\n     * @param {number} [position=0] The position to search from.\n     * @returns {boolean} Returns `true` if `string` starts with `target`,\n     *  else `false`.\n     * @example\n     *\n     * _.startsWith('abc', 'a');\n     * // => true\n     *\n     * _.startsWith('abc', 'b');\n     * // => false\n     *\n     * _.startsWith('abc', 'b', 1);\n     * // => true\n     */\n    function startsWith(string, target, position) {\n      string = toString(string);\n      position = position == null\n        ? 0\n        : baseClamp(toInteger(position), 0, string.length);\n\n      target = baseToString(target);\n      return string.slice(position, position + target.length) == target;\n    }\n\n    /**\n     * Creates a compiled template function that can interpolate data properties\n     * in \"interpolate\" delimiters, HTML-escape interpolated data properties in\n     * \"escape\" delimiters, and execute JavaScript in \"evaluate\" delimiters. Data\n     * properties may be accessed as free variables in the template. If a setting\n     * object is given, it takes precedence over `_.templateSettings` values.\n     *\n     * **Note:** In the development build `_.template` utilizes\n     * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)\n     * for easier debugging.\n     *\n     * For more information on precompiling templates see\n     * [lodash's custom builds documentation](https://lodash.com/custom-builds).\n     *\n     * For more information on Chrome extension sandboxes see\n     * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category String\n     * @param {string} [string=''] The template string.\n     * @param {Object} [options={}] The options object.\n     * @param {RegExp} [options.escape=_.templateSettings.escape]\n     *  The HTML \"escape\" delimiter.\n     * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]\n     *  The \"evaluate\" delimiter.\n     * @param {Object} [options.imports=_.templateSettings.imports]\n     *  An object to import into the template as free variables.\n     * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]\n     *  The \"interpolate\" delimiter.\n     * @param {string} [options.sourceURL='lodash.templateSources[n]']\n     *  The sourceURL of the compiled template.\n     * @param {string} [options.variable='obj']\n     *  The data object variable name.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Function} Returns the compiled template function.\n     * @example\n     *\n     * // Use the \"interpolate\" delimiter to create a compiled template.\n     * var compiled = _.template('hello <%= user %>!');\n     * compiled({ 'user': 'fred' });\n     * // => 'hello fred!'\n     *\n     * // Use the HTML \"escape\" delimiter to escape data property values.\n     * var compiled = _.template('<b><%- value %></b>');\n     * compiled({ 'value': '<script>' });\n     * // => '<b>&lt;script&gt;</b>'\n     *\n     * // Use the \"evaluate\" delimiter to execute JavaScript and generate HTML.\n     * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>');\n     * compiled({ 'users': ['fred', 'barney'] });\n     * // => '<li>fred</li><li>barney</li>'\n     *\n     * // Use the internal `print` function in \"evaluate\" delimiters.\n     * var compiled = _.template('<% print(\"hello \" + user); %>!');\n     * compiled({ 'user': 'barney' });\n     * // => 'hello barney!'\n     *\n     * // Use the ES template literal delimiter as an \"interpolate\" delimiter.\n     * // Disable support by replacing the \"interpolate\" delimiter.\n     * var compiled = _.template('hello ${ user }!');\n     * compiled({ 'user': 'pebbles' });\n     * // => 'hello pebbles!'\n     *\n     * // Use backslashes to treat delimiters as plain text.\n     * var compiled = _.template('<%= \"\\\\<%- value %\\\\>\" %>');\n     * compiled({ 'value': 'ignored' });\n     * // => '<%- value %>'\n     *\n     * // Use the `imports` option to import `jQuery` as `jq`.\n     * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>';\n     * var compiled = _.template(text, { 'imports': { 'jq': jQuery } });\n     * compiled({ 'users': ['fred', 'barney'] });\n     * // => '<li>fred</li><li>barney</li>'\n     *\n     * // Use the `sourceURL` option to specify a custom sourceURL for the template.\n     * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' });\n     * compiled(data);\n     * // => Find the source of \"greeting.jst\" under the Sources tab or Resources panel of the web inspector.\n     *\n     * // Use the `variable` option to ensure a with-statement isn't used in the compiled template.\n     * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' });\n     * compiled.source;\n     * // => function(data) {\n     * //   var __t, __p = '';\n     * //   __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';\n     * //   return __p;\n     * // }\n     *\n     * // Use custom template delimiters.\n     * _.templateSettings.interpolate = /{{([\\s\\S]+?)}}/g;\n     * var compiled = _.template('hello {{ user }}!');\n     * compiled({ 'user': 'mustache' });\n     * // => 'hello mustache!'\n     *\n     * // Use the `source` property to inline compiled templates for meaningful\n     * // line numbers in error messages and stack traces.\n     * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\\\n     *   var JST = {\\\n     *     \"main\": ' + _.template(mainText).source + '\\\n     *   };\\\n     * ');\n     */\n    function template(string, options, guard) {\n      // Based on John Resig's `tmpl` implementation\n      // (http://ejohn.org/blog/javascript-micro-templating/)\n      // and Laura Doktorova's doT.js (https://github.com/olado/doT).\n      var settings = lodash.templateSettings;\n\n      if (guard && isIterateeCall(string, options, guard)) {\n        options = undefined;\n      }\n      string = toString(string);\n      options = assignInWith({}, options, settings, customDefaultsAssignIn);\n\n      var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn),\n          importsKeys = keys(imports),\n          importsValues = baseValues(imports, importsKeys);\n\n      var isEscaping,\n          isEvaluating,\n          index = 0,\n          interpolate = options.interpolate || reNoMatch,\n          source = \"__p += '\";\n\n      // Compile the regexp to match each delimiter.\n      var reDelimiters = RegExp(\n        (options.escape || reNoMatch).source + '|' +\n        interpolate.source + '|' +\n        (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +\n        (options.evaluate || reNoMatch).source + '|$'\n      , 'g');\n\n      // Use a sourceURL for easier debugging.\n      // The sourceURL gets injected into the source that's eval-ed, so be careful\n      // with lookup (in case of e.g. prototype pollution), and strip newlines if any.\n      // A newline wouldn't be a valid sourceURL anyway, and it'd enable code injection.\n      var sourceURL = '//# sourceURL=' +\n        (hasOwnProperty.call(options, 'sourceURL')\n          ? (options.sourceURL + '').replace(/[\\r\\n]/g, ' ')\n          : ('lodash.templateSources[' + (++templateCounter) + ']')\n        ) + '\\n';\n\n      string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {\n        interpolateValue || (interpolateValue = esTemplateValue);\n\n        // Escape characters that can't be included in string literals.\n        source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar);\n\n        // Replace delimiters with snippets.\n        if (escapeValue) {\n          isEscaping = true;\n          source += \"' +\\n__e(\" + escapeValue + \") +\\n'\";\n        }\n        if (evaluateValue) {\n          isEvaluating = true;\n          source += \"';\\n\" + evaluateValue + \";\\n__p += '\";\n        }\n        if (interpolateValue) {\n          source += \"' +\\n((__t = (\" + interpolateValue + \")) == null ? '' : __t) +\\n'\";\n        }\n        index = offset + match.length;\n\n        // The JS engine embedded in Adobe products needs `match` returned in\n        // order to produce the correct `offset` value.\n        return match;\n      });\n\n      source += \"';\\n\";\n\n      // If `variable` is not specified wrap a with-statement around the generated\n      // code to add the data object to the top of the scope chain.\n      // Like with sourceURL, we take care to not check the option's prototype,\n      // as this configuration is a code injection vector.\n      var variable = hasOwnProperty.call(options, 'variable') && options.variable;\n      if (!variable) {\n        source = 'with (obj) {\\n' + source + '\\n}\\n';\n      }\n      // Cleanup code by stripping empty strings.\n      source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)\n        .replace(reEmptyStringMiddle, '$1')\n        .replace(reEmptyStringTrailing, '$1;');\n\n      // Frame code as the function body.\n      source = 'function(' + (variable || 'obj') + ') {\\n' +\n        (variable\n          ? ''\n          : 'obj || (obj = {});\\n'\n        ) +\n        \"var __t, __p = ''\" +\n        (isEscaping\n           ? ', __e = _.escape'\n           : ''\n        ) +\n        (isEvaluating\n          ? ', __j = Array.prototype.join;\\n' +\n            \"function print() { __p += __j.call(arguments, '') }\\n\"\n          : ';\\n'\n        ) +\n        source +\n        'return __p\\n}';\n\n      var result = attempt(function() {\n        return Function(importsKeys, sourceURL + 'return ' + source)\n          .apply(undefined, importsValues);\n      });\n\n      // Provide the compiled function's source by its `toString` method or\n      // the `source` property as a convenience for inlining compiled templates.\n      result.source = source;\n      if (isError(result)) {\n        throw result;\n      }\n      return result;\n    }\n\n    /**\n     * Converts `string`, as a whole, to lower case just like\n     * [String#toLowerCase](https://mdn.io/toLowerCase).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the lower cased string.\n     * @example\n     *\n     * _.toLower('--Foo-Bar--');\n     * // => '--foo-bar--'\n     *\n     * _.toLower('fooBar');\n     * // => 'foobar'\n     *\n     * _.toLower('__FOO_BAR__');\n     * // => '__foo_bar__'\n     */\n    function toLower(value) {\n      return toString(value).toLowerCase();\n    }\n\n    /**\n     * Converts `string`, as a whole, to upper case just like\n     * [String#toUpperCase](https://mdn.io/toUpperCase).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the upper cased string.\n     * @example\n     *\n     * _.toUpper('--foo-bar--');\n     * // => '--FOO-BAR--'\n     *\n     * _.toUpper('fooBar');\n     * // => 'FOOBAR'\n     *\n     * _.toUpper('__foo_bar__');\n     * // => '__FOO_BAR__'\n     */\n    function toUpper(value) {\n      return toString(value).toUpperCase();\n    }\n\n    /**\n     * Removes leading and trailing whitespace or specified characters from `string`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to trim.\n     * @param {string} [chars=whitespace] The characters to trim.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {string} Returns the trimmed string.\n     * @example\n     *\n     * _.trim('  abc  ');\n     * // => 'abc'\n     *\n     * _.trim('-_-abc-_-', '_-');\n     * // => 'abc'\n     *\n     * _.map(['  foo  ', '  bar  '], _.trim);\n     * // => ['foo', 'bar']\n     */\n    function trim(string, chars, guard) {\n      string = toString(string);\n      if (string && (guard || chars === undefined)) {\n        return string.replace(reTrim, '');\n      }\n      if (!string || !(chars = baseToString(chars))) {\n        return string;\n      }\n      var strSymbols = stringToArray(string),\n          chrSymbols = stringToArray(chars),\n          start = charsStartIndex(strSymbols, chrSymbols),\n          end = charsEndIndex(strSymbols, chrSymbols) + 1;\n\n      return castSlice(strSymbols, start, end).join('');\n    }\n\n    /**\n     * Removes trailing whitespace or specified characters from `string`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to trim.\n     * @param {string} [chars=whitespace] The characters to trim.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {string} Returns the trimmed string.\n     * @example\n     *\n     * _.trimEnd('  abc  ');\n     * // => '  abc'\n     *\n     * _.trimEnd('-_-abc-_-', '_-');\n     * // => '-_-abc'\n     */\n    function trimEnd(string, chars, guard) {\n      string = toString(string);\n      if (string && (guard || chars === undefined)) {\n        return string.replace(reTrimEnd, '');\n      }\n      if (!string || !(chars = baseToString(chars))) {\n        return string;\n      }\n      var strSymbols = stringToArray(string),\n          end = charsEndIndex(strSymbols, stringToArray(chars)) + 1;\n\n      return castSlice(strSymbols, 0, end).join('');\n    }\n\n    /**\n     * Removes leading whitespace or specified characters from `string`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to trim.\n     * @param {string} [chars=whitespace] The characters to trim.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {string} Returns the trimmed string.\n     * @example\n     *\n     * _.trimStart('  abc  ');\n     * // => 'abc  '\n     *\n     * _.trimStart('-_-abc-_-', '_-');\n     * // => 'abc-_-'\n     */\n    function trimStart(string, chars, guard) {\n      string = toString(string);\n      if (string && (guard || chars === undefined)) {\n        return string.replace(reTrimStart, '');\n      }\n      if (!string || !(chars = baseToString(chars))) {\n        return string;\n      }\n      var strSymbols = stringToArray(string),\n          start = charsStartIndex(strSymbols, stringToArray(chars));\n\n      return castSlice(strSymbols, start).join('');\n    }\n\n    /**\n     * Truncates `string` if it's longer than the given maximum string length.\n     * The last characters of the truncated string are replaced with the omission\n     * string which defaults to \"...\".\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to truncate.\n     * @param {Object} [options={}] The options object.\n     * @param {number} [options.length=30] The maximum string length.\n     * @param {string} [options.omission='...'] The string to indicate text is omitted.\n     * @param {RegExp|string} [options.separator] The separator pattern to truncate to.\n     * @returns {string} Returns the truncated string.\n     * @example\n     *\n     * _.truncate('hi-diddly-ho there, neighborino');\n     * // => 'hi-diddly-ho there, neighbo...'\n     *\n     * _.truncate('hi-diddly-ho there, neighborino', {\n     *   'length': 24,\n     *   'separator': ' '\n     * });\n     * // => 'hi-diddly-ho there,...'\n     *\n     * _.truncate('hi-diddly-ho there, neighborino', {\n     *   'length': 24,\n     *   'separator': /,? +/\n     * });\n     * // => 'hi-diddly-ho there...'\n     *\n     * _.truncate('hi-diddly-ho there, neighborino', {\n     *   'omission': ' [...]'\n     * });\n     * // => 'hi-diddly-ho there, neig [...]'\n     */\n    function truncate(string, options) {\n      var length = DEFAULT_TRUNC_LENGTH,\n          omission = DEFAULT_TRUNC_OMISSION;\n\n      if (isObject(options)) {\n        var separator = 'separator' in options ? options.separator : separator;\n        length = 'length' in options ? toInteger(options.length) : length;\n        omission = 'omission' in options ? baseToString(options.omission) : omission;\n      }\n      string = toString(string);\n\n      var strLength = string.length;\n      if (hasUnicode(string)) {\n        var strSymbols = stringToArray(string);\n        strLength = strSymbols.length;\n      }\n      if (length >= strLength) {\n        return string;\n      }\n      var end = length - stringSize(omission);\n      if (end < 1) {\n        return omission;\n      }\n      var result = strSymbols\n        ? castSlice(strSymbols, 0, end).join('')\n        : string.slice(0, end);\n\n      if (separator === undefined) {\n        return result + omission;\n      }\n      if (strSymbols) {\n        end += (result.length - end);\n      }\n      if (isRegExp(separator)) {\n        if (string.slice(end).search(separator)) {\n          var match,\n              substring = result;\n\n          if (!separator.global) {\n            separator = RegExp(separator.source, toString(reFlags.exec(separator)) + 'g');\n          }\n          separator.lastIndex = 0;\n          while ((match = separator.exec(substring))) {\n            var newEnd = match.index;\n          }\n          result = result.slice(0, newEnd === undefined ? end : newEnd);\n        }\n      } else if (string.indexOf(baseToString(separator), end) != end) {\n        var index = result.lastIndexOf(separator);\n        if (index > -1) {\n          result = result.slice(0, index);\n        }\n      }\n      return result + omission;\n    }\n\n    /**\n     * The inverse of `_.escape`; this method converts the HTML entities\n     * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to\n     * their corresponding characters.\n     *\n     * **Note:** No other HTML entities are unescaped. To unescape additional\n     * HTML entities use a third-party library like [_he_](https://mths.be/he).\n     *\n     * @static\n     * @memberOf _\n     * @since 0.6.0\n     * @category String\n     * @param {string} [string=''] The string to unescape.\n     * @returns {string} Returns the unescaped string.\n     * @example\n     *\n     * _.unescape('fred, barney, &amp; pebbles');\n     * // => 'fred, barney, & pebbles'\n     */\n    function unescape(string) {\n      string = toString(string);\n      return (string && reHasEscapedHtml.test(string))\n        ? string.replace(reEscapedHtml, unescapeHtmlChar)\n        : string;\n    }\n\n    /**\n     * Converts `string`, as space separated words, to upper case.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the upper cased string.\n     * @example\n     *\n     * _.upperCase('--foo-bar');\n     * // => 'FOO BAR'\n     *\n     * _.upperCase('fooBar');\n     * // => 'FOO BAR'\n     *\n     * _.upperCase('__foo_bar__');\n     * // => 'FOO BAR'\n     */\n    var upperCase = createCompounder(function(result, word, index) {\n      return result + (index ? ' ' : '') + word.toUpperCase();\n    });\n\n    /**\n     * Converts the first character of `string` to upper case.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category String\n     * @param {string} [string=''] The string to convert.\n     * @returns {string} Returns the converted string.\n     * @example\n     *\n     * _.upperFirst('fred');\n     * // => 'Fred'\n     *\n     * _.upperFirst('FRED');\n     * // => 'FRED'\n     */\n    var upperFirst = createCaseFirst('toUpperCase');\n\n    /**\n     * Splits `string` into an array of its words.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category String\n     * @param {string} [string=''] The string to inspect.\n     * @param {RegExp|string} [pattern] The pattern to match words.\n     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n     * @returns {Array} Returns the words of `string`.\n     * @example\n     *\n     * _.words('fred, barney, & pebbles');\n     * // => ['fred', 'barney', 'pebbles']\n     *\n     * _.words('fred, barney, & pebbles', /[^, ]+/g);\n     * // => ['fred', 'barney', '&', 'pebbles']\n     */\n    function words(string, pattern, guard) {\n      string = toString(string);\n      pattern = guard ? undefined : pattern;\n\n      if (pattern === undefined) {\n        return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string);\n      }\n      return string.match(pattern) || [];\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Attempts to invoke `func`, returning either the result or the caught error\n     * object. Any additional arguments are provided to `func` when it's invoked.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Util\n     * @param {Function} func The function to attempt.\n     * @param {...*} [args] The arguments to invoke `func` with.\n     * @returns {*} Returns the `func` result or error object.\n     * @example\n     *\n     * // Avoid throwing errors for invalid selectors.\n     * var elements = _.attempt(function(selector) {\n     *   return document.querySelectorAll(selector);\n     * }, '>_>');\n     *\n     * if (_.isError(elements)) {\n     *   elements = [];\n     * }\n     */\n    var attempt = baseRest(function(func, args) {\n      try {\n        return apply(func, undefined, args);\n      } catch (e) {\n        return isError(e) ? e : new Error(e);\n      }\n    });\n\n    /**\n     * Binds methods of an object to the object itself, overwriting the existing\n     * method.\n     *\n     * **Note:** This method doesn't set the \"length\" property of bound functions.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {Object} object The object to bind and assign the bound methods to.\n     * @param {...(string|string[])} methodNames The object method names to bind.\n     * @returns {Object} Returns `object`.\n     * @example\n     *\n     * var view = {\n     *   'label': 'docs',\n     *   'click': function() {\n     *     console.log('clicked ' + this.label);\n     *   }\n     * };\n     *\n     * _.bindAll(view, ['click']);\n     * jQuery(element).on('click', view.click);\n     * // => Logs 'clicked docs' when clicked.\n     */\n    var bindAll = flatRest(function(object, methodNames) {\n      arrayEach(methodNames, function(key) {\n        key = toKey(key);\n        baseAssignValue(object, key, bind(object[key], object));\n      });\n      return object;\n    });\n\n    /**\n     * Creates a function that iterates over `pairs` and invokes the corresponding\n     * function of the first predicate to return truthy. The predicate-function\n     * pairs are invoked with the `this` binding and arguments of the created\n     * function.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {Array} pairs The predicate-function pairs.\n     * @returns {Function} Returns the new composite function.\n     * @example\n     *\n     * var func = _.cond([\n     *   [_.matches({ 'a': 1 }),           _.constant('matches A')],\n     *   [_.conforms({ 'b': _.isNumber }), _.constant('matches B')],\n     *   [_.stubTrue,                      _.constant('no match')]\n     * ]);\n     *\n     * func({ 'a': 1, 'b': 2 });\n     * // => 'matches A'\n     *\n     * func({ 'a': 0, 'b': 1 });\n     * // => 'matches B'\n     *\n     * func({ 'a': '1', 'b': '2' });\n     * // => 'no match'\n     */\n    function cond(pairs) {\n      var length = pairs == null ? 0 : pairs.length,\n          toIteratee = getIteratee();\n\n      pairs = !length ? [] : arrayMap(pairs, function(pair) {\n        if (typeof pair[1] != 'function') {\n          throw new TypeError(FUNC_ERROR_TEXT);\n        }\n        return [toIteratee(pair[0]), pair[1]];\n      });\n\n      return baseRest(function(args) {\n        var index = -1;\n        while (++index < length) {\n          var pair = pairs[index];\n          if (apply(pair[0], this, args)) {\n            return apply(pair[1], this, args);\n          }\n        }\n      });\n    }\n\n    /**\n     * Creates a function that invokes the predicate properties of `source` with\n     * the corresponding property values of a given object, returning `true` if\n     * all predicates return truthy, else `false`.\n     *\n     * **Note:** The created function is equivalent to `_.conformsTo` with\n     * `source` partially applied.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {Object} source The object of property predicates to conform to.\n     * @returns {Function} Returns the new spec function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': 2, 'b': 1 },\n     *   { 'a': 1, 'b': 2 }\n     * ];\n     *\n     * _.filter(objects, _.conforms({ 'b': function(n) { return n > 1; } }));\n     * // => [{ 'a': 1, 'b': 2 }]\n     */\n    function conforms(source) {\n      return baseConforms(baseClone(source, CLONE_DEEP_FLAG));\n    }\n\n    /**\n     * Creates a function that returns `value`.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Util\n     * @param {*} value The value to return from the new function.\n     * @returns {Function} Returns the new constant function.\n     * @example\n     *\n     * var objects = _.times(2, _.constant({ 'a': 1 }));\n     *\n     * console.log(objects);\n     * // => [{ 'a': 1 }, { 'a': 1 }]\n     *\n     * console.log(objects[0] === objects[1]);\n     * // => true\n     */\n    function constant(value) {\n      return function() {\n        return value;\n      };\n    }\n\n    /**\n     * Checks `value` to determine whether a default value should be returned in\n     * its place. The `defaultValue` is returned if `value` is `NaN`, `null`,\n     * or `undefined`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.14.0\n     * @category Util\n     * @param {*} value The value to check.\n     * @param {*} defaultValue The default value.\n     * @returns {*} Returns the resolved value.\n     * @example\n     *\n     * _.defaultTo(1, 10);\n     * // => 1\n     *\n     * _.defaultTo(undefined, 10);\n     * // => 10\n     */\n    function defaultTo(value, defaultValue) {\n      return (value == null || value !== value) ? defaultValue : value;\n    }\n\n    /**\n     * Creates a function that returns the result of invoking the given functions\n     * with the `this` binding of the created function, where each successive\n     * invocation is supplied the return value of the previous.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Util\n     * @param {...(Function|Function[])} [funcs] The functions to invoke.\n     * @returns {Function} Returns the new composite function.\n     * @see _.flowRight\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var addSquare = _.flow([_.add, square]);\n     * addSquare(1, 2);\n     * // => 9\n     */\n    var flow = createFlow();\n\n    /**\n     * This method is like `_.flow` except that it creates a function that\n     * invokes the given functions from right to left.\n     *\n     * @static\n     * @since 3.0.0\n     * @memberOf _\n     * @category Util\n     * @param {...(Function|Function[])} [funcs] The functions to invoke.\n     * @returns {Function} Returns the new composite function.\n     * @see _.flow\n     * @example\n     *\n     * function square(n) {\n     *   return n * n;\n     * }\n     *\n     * var addSquare = _.flowRight([square, _.add]);\n     * addSquare(1, 2);\n     * // => 9\n     */\n    var flowRight = createFlow(true);\n\n    /**\n     * This method returns the first argument it receives.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {*} value Any value.\n     * @returns {*} Returns `value`.\n     * @example\n     *\n     * var object = { 'a': 1 };\n     *\n     * console.log(_.identity(object) === object);\n     * // => true\n     */\n    function identity(value) {\n      return value;\n    }\n\n    /**\n     * Creates a function that invokes `func` with the arguments of the created\n     * function. If `func` is a property name, the created function returns the\n     * property value for a given element. If `func` is an array or object, the\n     * created function returns `true` for elements that contain the equivalent\n     * source properties, otherwise it returns `false`.\n     *\n     * @static\n     * @since 4.0.0\n     * @memberOf _\n     * @category Util\n     * @param {*} [func=_.identity] The value to convert to a callback.\n     * @returns {Function} Returns the callback.\n     * @example\n     *\n     * var users = [\n     *   { 'user': 'barney', 'age': 36, 'active': true },\n     *   { 'user': 'fred',   'age': 40, 'active': false }\n     * ];\n     *\n     * // The `_.matches` iteratee shorthand.\n     * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true }));\n     * // => [{ 'user': 'barney', 'age': 36, 'active': true }]\n     *\n     * // The `_.matchesProperty` iteratee shorthand.\n     * _.filter(users, _.iteratee(['user', 'fred']));\n     * // => [{ 'user': 'fred', 'age': 40 }]\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.map(users, _.iteratee('user'));\n     * // => ['barney', 'fred']\n     *\n     * // Create custom iteratee shorthands.\n     * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) {\n     *   return !_.isRegExp(func) ? iteratee(func) : function(string) {\n     *     return func.test(string);\n     *   };\n     * });\n     *\n     * _.filter(['abc', 'def'], /ef/);\n     * // => ['def']\n     */\n    function iteratee(func) {\n      return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG));\n    }\n\n    /**\n     * Creates a function that performs a partial deep comparison between a given\n     * object and `source`, returning `true` if the given object has equivalent\n     * property values, else `false`.\n     *\n     * **Note:** The created function is equivalent to `_.isMatch` with `source`\n     * partially applied.\n     *\n     * Partial comparisons will match empty array and empty object `source`\n     * values against any array or object value, respectively. See `_.isEqual`\n     * for a list of supported value comparisons.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Util\n     * @param {Object} source The object of property values to match.\n     * @returns {Function} Returns the new spec function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': 1, 'b': 2, 'c': 3 },\n     *   { 'a': 4, 'b': 5, 'c': 6 }\n     * ];\n     *\n     * _.filter(objects, _.matches({ 'a': 4, 'c': 6 }));\n     * // => [{ 'a': 4, 'b': 5, 'c': 6 }]\n     */\n    function matches(source) {\n      return baseMatches(baseClone(source, CLONE_DEEP_FLAG));\n    }\n\n    /**\n     * Creates a function that performs a partial deep comparison between the\n     * value at `path` of a given object to `srcValue`, returning `true` if the\n     * object value is equivalent, else `false`.\n     *\n     * **Note:** Partial comparisons will match empty array and empty object\n     * `srcValue` values against any array or object value, respectively. See\n     * `_.isEqual` for a list of supported value comparisons.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.2.0\n     * @category Util\n     * @param {Array|string} path The path of the property to get.\n     * @param {*} srcValue The value to match.\n     * @returns {Function} Returns the new spec function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': 1, 'b': 2, 'c': 3 },\n     *   { 'a': 4, 'b': 5, 'c': 6 }\n     * ];\n     *\n     * _.find(objects, _.matchesProperty('a', 4));\n     * // => { 'a': 4, 'b': 5, 'c': 6 }\n     */\n    function matchesProperty(path, srcValue) {\n      return baseMatchesProperty(path, baseClone(srcValue, CLONE_DEEP_FLAG));\n    }\n\n    /**\n     * Creates a function that invokes the method at `path` of a given object.\n     * Any additional arguments are provided to the invoked method.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.7.0\n     * @category Util\n     * @param {Array|string} path The path of the method to invoke.\n     * @param {...*} [args] The arguments to invoke the method with.\n     * @returns {Function} Returns the new invoker function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': { 'b': _.constant(2) } },\n     *   { 'a': { 'b': _.constant(1) } }\n     * ];\n     *\n     * _.map(objects, _.method('a.b'));\n     * // => [2, 1]\n     *\n     * _.map(objects, _.method(['a', 'b']));\n     * // => [2, 1]\n     */\n    var method = baseRest(function(path, args) {\n      return function(object) {\n        return baseInvoke(object, path, args);\n      };\n    });\n\n    /**\n     * The opposite of `_.method`; this method creates a function that invokes\n     * the method at a given path of `object`. Any additional arguments are\n     * provided to the invoked method.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.7.0\n     * @category Util\n     * @param {Object} object The object to query.\n     * @param {...*} [args] The arguments to invoke the method with.\n     * @returns {Function} Returns the new invoker function.\n     * @example\n     *\n     * var array = _.times(3, _.constant),\n     *     object = { 'a': array, 'b': array, 'c': array };\n     *\n     * _.map(['a[2]', 'c[0]'], _.methodOf(object));\n     * // => [2, 0]\n     *\n     * _.map([['a', '2'], ['c', '0']], _.methodOf(object));\n     * // => [2, 0]\n     */\n    var methodOf = baseRest(function(object, args) {\n      return function(path) {\n        return baseInvoke(object, path, args);\n      };\n    });\n\n    /**\n     * Adds all own enumerable string keyed function properties of a source\n     * object to the destination object. If `object` is a function, then methods\n     * are added to its prototype as well.\n     *\n     * **Note:** Use `_.runInContext` to create a pristine `lodash` function to\n     * avoid conflicts caused by modifying the original.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {Function|Object} [object=lodash] The destination object.\n     * @param {Object} source The object of functions to add.\n     * @param {Object} [options={}] The options object.\n     * @param {boolean} [options.chain=true] Specify whether mixins are chainable.\n     * @returns {Function|Object} Returns `object`.\n     * @example\n     *\n     * function vowels(string) {\n     *   return _.filter(string, function(v) {\n     *     return /[aeiou]/i.test(v);\n     *   });\n     * }\n     *\n     * _.mixin({ 'vowels': vowels });\n     * _.vowels('fred');\n     * // => ['e']\n     *\n     * _('fred').vowels().value();\n     * // => ['e']\n     *\n     * _.mixin({ 'vowels': vowels }, { 'chain': false });\n     * _('fred').vowels();\n     * // => ['e']\n     */\n    function mixin(object, source, options) {\n      var props = keys(source),\n          methodNames = baseFunctions(source, props);\n\n      if (options == null &&\n          !(isObject(source) && (methodNames.length || !props.length))) {\n        options = source;\n        source = object;\n        object = this;\n        methodNames = baseFunctions(source, keys(source));\n      }\n      var chain = !(isObject(options) && 'chain' in options) || !!options.chain,\n          isFunc = isFunction(object);\n\n      arrayEach(methodNames, function(methodName) {\n        var func = source[methodName];\n        object[methodName] = func;\n        if (isFunc) {\n          object.prototype[methodName] = function() {\n            var chainAll = this.__chain__;\n            if (chain || chainAll) {\n              var result = object(this.__wrapped__),\n                  actions = result.__actions__ = copyArray(this.__actions__);\n\n              actions.push({ 'func': func, 'args': arguments, 'thisArg': object });\n              result.__chain__ = chainAll;\n              return result;\n            }\n            return func.apply(object, arrayPush([this.value()], arguments));\n          };\n        }\n      });\n\n      return object;\n    }\n\n    /**\n     * Reverts the `_` variable to its previous value and returns a reference to\n     * the `lodash` function.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @returns {Function} Returns the `lodash` function.\n     * @example\n     *\n     * var lodash = _.noConflict();\n     */\n    function noConflict() {\n      if (root._ === this) {\n        root._ = oldDash;\n      }\n      return this;\n    }\n\n    /**\n     * This method returns `undefined`.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.3.0\n     * @category Util\n     * @example\n     *\n     * _.times(2, _.noop);\n     * // => [undefined, undefined]\n     */\n    function noop() {\n      // No operation performed.\n    }\n\n    /**\n     * Creates a function that gets the argument at index `n`. If `n` is negative,\n     * the nth argument from the end is returned.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {number} [n=0] The index of the argument to return.\n     * @returns {Function} Returns the new pass-thru function.\n     * @example\n     *\n     * var func = _.nthArg(1);\n     * func('a', 'b', 'c', 'd');\n     * // => 'b'\n     *\n     * var func = _.nthArg(-2);\n     * func('a', 'b', 'c', 'd');\n     * // => 'c'\n     */\n    function nthArg(n) {\n      n = toInteger(n);\n      return baseRest(function(args) {\n        return baseNth(args, n);\n      });\n    }\n\n    /**\n     * Creates a function that invokes `iteratees` with the arguments it receives\n     * and returns their results.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {...(Function|Function[])} [iteratees=[_.identity]]\n     *  The iteratees to invoke.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var func = _.over([Math.max, Math.min]);\n     *\n     * func(1, 2, 3, 4);\n     * // => [4, 1]\n     */\n    var over = createOver(arrayMap);\n\n    /**\n     * Creates a function that checks if **all** of the `predicates` return\n     * truthy when invoked with the arguments it receives.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {...(Function|Function[])} [predicates=[_.identity]]\n     *  The predicates to check.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var func = _.overEvery([Boolean, isFinite]);\n     *\n     * func('1');\n     * // => true\n     *\n     * func(null);\n     * // => false\n     *\n     * func(NaN);\n     * // => false\n     */\n    var overEvery = createOver(arrayEvery);\n\n    /**\n     * Creates a function that checks if **any** of the `predicates` return\n     * truthy when invoked with the arguments it receives.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {...(Function|Function[])} [predicates=[_.identity]]\n     *  The predicates to check.\n     * @returns {Function} Returns the new function.\n     * @example\n     *\n     * var func = _.overSome([Boolean, isFinite]);\n     *\n     * func('1');\n     * // => true\n     *\n     * func(null);\n     * // => true\n     *\n     * func(NaN);\n     * // => false\n     */\n    var overSome = createOver(arraySome);\n\n    /**\n     * Creates a function that returns the value at `path` of a given object.\n     *\n     * @static\n     * @memberOf _\n     * @since 2.4.0\n     * @category Util\n     * @param {Array|string} path The path of the property to get.\n     * @returns {Function} Returns the new accessor function.\n     * @example\n     *\n     * var objects = [\n     *   { 'a': { 'b': 2 } },\n     *   { 'a': { 'b': 1 } }\n     * ];\n     *\n     * _.map(objects, _.property('a.b'));\n     * // => [2, 1]\n     *\n     * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');\n     * // => [1, 2]\n     */\n    function property(path) {\n      return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);\n    }\n\n    /**\n     * The opposite of `_.property`; this method creates a function that returns\n     * the value at a given path of `object`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.0.0\n     * @category Util\n     * @param {Object} object The object to query.\n     * @returns {Function} Returns the new accessor function.\n     * @example\n     *\n     * var array = [0, 1, 2],\n     *     object = { 'a': array, 'b': array, 'c': array };\n     *\n     * _.map(['a[2]', 'c[0]'], _.propertyOf(object));\n     * // => [2, 0]\n     *\n     * _.map([['a', '2'], ['c', '0']], _.propertyOf(object));\n     * // => [2, 0]\n     */\n    function propertyOf(object) {\n      return function(path) {\n        return object == null ? undefined : baseGet(object, path);\n      };\n    }\n\n    /**\n     * Creates an array of numbers (positive and/or negative) progressing from\n     * `start` up to, but not including, `end`. A step of `-1` is used if a negative\n     * `start` is specified without an `end` or `step`. If `end` is not specified,\n     * it's set to `start` with `start` then set to `0`.\n     *\n     * **Note:** JavaScript follows the IEEE-754 standard for resolving\n     * floating-point values which can produce unexpected results.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {number} [start=0] The start of the range.\n     * @param {number} end The end of the range.\n     * @param {number} [step=1] The value to increment or decrement by.\n     * @returns {Array} Returns the range of numbers.\n     * @see _.inRange, _.rangeRight\n     * @example\n     *\n     * _.range(4);\n     * // => [0, 1, 2, 3]\n     *\n     * _.range(-4);\n     * // => [0, -1, -2, -3]\n     *\n     * _.range(1, 5);\n     * // => [1, 2, 3, 4]\n     *\n     * _.range(0, 20, 5);\n     * // => [0, 5, 10, 15]\n     *\n     * _.range(0, -4, -1);\n     * // => [0, -1, -2, -3]\n     *\n     * _.range(1, 4, 0);\n     * // => [1, 1, 1]\n     *\n     * _.range(0);\n     * // => []\n     */\n    var range = createRange();\n\n    /**\n     * This method is like `_.range` except that it populates values in\n     * descending order.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {number} [start=0] The start of the range.\n     * @param {number} end The end of the range.\n     * @param {number} [step=1] The value to increment or decrement by.\n     * @returns {Array} Returns the range of numbers.\n     * @see _.inRange, _.range\n     * @example\n     *\n     * _.rangeRight(4);\n     * // => [3, 2, 1, 0]\n     *\n     * _.rangeRight(-4);\n     * // => [-3, -2, -1, 0]\n     *\n     * _.rangeRight(1, 5);\n     * // => [4, 3, 2, 1]\n     *\n     * _.rangeRight(0, 20, 5);\n     * // => [15, 10, 5, 0]\n     *\n     * _.rangeRight(0, -4, -1);\n     * // => [-3, -2, -1, 0]\n     *\n     * _.rangeRight(1, 4, 0);\n     * // => [1, 1, 1]\n     *\n     * _.rangeRight(0);\n     * // => []\n     */\n    var rangeRight = createRange(true);\n\n    /**\n     * This method returns a new empty array.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {Array} Returns the new empty array.\n     * @example\n     *\n     * var arrays = _.times(2, _.stubArray);\n     *\n     * console.log(arrays);\n     * // => [[], []]\n     *\n     * console.log(arrays[0] === arrays[1]);\n     * // => false\n     */\n    function stubArray() {\n      return [];\n    }\n\n    /**\n     * This method returns `false`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {boolean} Returns `false`.\n     * @example\n     *\n     * _.times(2, _.stubFalse);\n     * // => [false, false]\n     */\n    function stubFalse() {\n      return false;\n    }\n\n    /**\n     * This method returns a new empty object.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {Object} Returns the new empty object.\n     * @example\n     *\n     * var objects = _.times(2, _.stubObject);\n     *\n     * console.log(objects);\n     * // => [{}, {}]\n     *\n     * console.log(objects[0] === objects[1]);\n     * // => false\n     */\n    function stubObject() {\n      return {};\n    }\n\n    /**\n     * This method returns an empty string.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {string} Returns the empty string.\n     * @example\n     *\n     * _.times(2, _.stubString);\n     * // => ['', '']\n     */\n    function stubString() {\n      return '';\n    }\n\n    /**\n     * This method returns `true`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.13.0\n     * @category Util\n     * @returns {boolean} Returns `true`.\n     * @example\n     *\n     * _.times(2, _.stubTrue);\n     * // => [true, true]\n     */\n    function stubTrue() {\n      return true;\n    }\n\n    /**\n     * Invokes the iteratee `n` times, returning an array of the results of\n     * each invocation. The iteratee is invoked with one argument; (index).\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {number} n The number of times to invoke `iteratee`.\n     * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n     * @returns {Array} Returns the array of results.\n     * @example\n     *\n     * _.times(3, String);\n     * // => ['0', '1', '2']\n     *\n     *  _.times(4, _.constant(0));\n     * // => [0, 0, 0, 0]\n     */\n    function times(n, iteratee) {\n      n = toInteger(n);\n      if (n < 1 || n > MAX_SAFE_INTEGER) {\n        return [];\n      }\n      var index = MAX_ARRAY_LENGTH,\n          length = nativeMin(n, MAX_ARRAY_LENGTH);\n\n      iteratee = getIteratee(iteratee);\n      n -= MAX_ARRAY_LENGTH;\n\n      var result = baseTimes(length, iteratee);\n      while (++index < n) {\n        iteratee(index);\n      }\n      return result;\n    }\n\n    /**\n     * Converts `value` to a property path array.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Util\n     * @param {*} value The value to convert.\n     * @returns {Array} Returns the new property path array.\n     * @example\n     *\n     * _.toPath('a.b.c');\n     * // => ['a', 'b', 'c']\n     *\n     * _.toPath('a[0].b.c');\n     * // => ['a', '0', 'b', 'c']\n     */\n    function toPath(value) {\n      if (isArray(value)) {\n        return arrayMap(value, toKey);\n      }\n      return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value)));\n    }\n\n    /**\n     * Generates a unique ID. If `prefix` is given, the ID is appended to it.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Util\n     * @param {string} [prefix=''] The value to prefix the ID with.\n     * @returns {string} Returns the unique ID.\n     * @example\n     *\n     * _.uniqueId('contact_');\n     * // => 'contact_104'\n     *\n     * _.uniqueId();\n     * // => '105'\n     */\n    function uniqueId(prefix) {\n      var id = ++idCounter;\n      return toString(prefix) + id;\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * Adds two numbers.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.4.0\n     * @category Math\n     * @param {number} augend The first number in an addition.\n     * @param {number} addend The second number in an addition.\n     * @returns {number} Returns the total.\n     * @example\n     *\n     * _.add(6, 4);\n     * // => 10\n     */\n    var add = createMathOperation(function(augend, addend) {\n      return augend + addend;\n    }, 0);\n\n    /**\n     * Computes `number` rounded up to `precision`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.10.0\n     * @category Math\n     * @param {number} number The number to round up.\n     * @param {number} [precision=0] The precision to round up to.\n     * @returns {number} Returns the rounded up number.\n     * @example\n     *\n     * _.ceil(4.006);\n     * // => 5\n     *\n     * _.ceil(6.004, 2);\n     * // => 6.01\n     *\n     * _.ceil(6040, -2);\n     * // => 6100\n     */\n    var ceil = createRound('ceil');\n\n    /**\n     * Divide two numbers.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Math\n     * @param {number} dividend The first number in a division.\n     * @param {number} divisor The second number in a division.\n     * @returns {number} Returns the quotient.\n     * @example\n     *\n     * _.divide(6, 4);\n     * // => 1.5\n     */\n    var divide = createMathOperation(function(dividend, divisor) {\n      return dividend / divisor;\n    }, 1);\n\n    /**\n     * Computes `number` rounded down to `precision`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.10.0\n     * @category Math\n     * @param {number} number The number to round down.\n     * @param {number} [precision=0] The precision to round down to.\n     * @returns {number} Returns the rounded down number.\n     * @example\n     *\n     * _.floor(4.006);\n     * // => 4\n     *\n     * _.floor(0.046, 2);\n     * // => 0.04\n     *\n     * _.floor(4060, -2);\n     * // => 4000\n     */\n    var floor = createRound('floor');\n\n    /**\n     * Computes the maximum value of `array`. If `array` is empty or falsey,\n     * `undefined` is returned.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @returns {*} Returns the maximum value.\n     * @example\n     *\n     * _.max([4, 2, 8, 6]);\n     * // => 8\n     *\n     * _.max([]);\n     * // => undefined\n     */\n    function max(array) {\n      return (array && array.length)\n        ? baseExtremum(array, identity, baseGt)\n        : undefined;\n    }\n\n    /**\n     * This method is like `_.max` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the criterion by which\n     * the value is ranked. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {*} Returns the maximum value.\n     * @example\n     *\n     * var objects = [{ 'n': 1 }, { 'n': 2 }];\n     *\n     * _.maxBy(objects, function(o) { return o.n; });\n     * // => { 'n': 2 }\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.maxBy(objects, 'n');\n     * // => { 'n': 2 }\n     */\n    function maxBy(array, iteratee) {\n      return (array && array.length)\n        ? baseExtremum(array, getIteratee(iteratee, 2), baseGt)\n        : undefined;\n    }\n\n    /**\n     * Computes the mean of the values in `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @returns {number} Returns the mean.\n     * @example\n     *\n     * _.mean([4, 2, 8, 6]);\n     * // => 5\n     */\n    function mean(array) {\n      return baseMean(array, identity);\n    }\n\n    /**\n     * This method is like `_.mean` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the value to be averaged.\n     * The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {number} Returns the mean.\n     * @example\n     *\n     * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];\n     *\n     * _.meanBy(objects, function(o) { return o.n; });\n     * // => 5\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.meanBy(objects, 'n');\n     * // => 5\n     */\n    function meanBy(array, iteratee) {\n      return baseMean(array, getIteratee(iteratee, 2));\n    }\n\n    /**\n     * Computes the minimum value of `array`. If `array` is empty or falsey,\n     * `undefined` is returned.\n     *\n     * @static\n     * @since 0.1.0\n     * @memberOf _\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @returns {*} Returns the minimum value.\n     * @example\n     *\n     * _.min([4, 2, 8, 6]);\n     * // => 2\n     *\n     * _.min([]);\n     * // => undefined\n     */\n    function min(array) {\n      return (array && array.length)\n        ? baseExtremum(array, identity, baseLt)\n        : undefined;\n    }\n\n    /**\n     * This method is like `_.min` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the criterion by which\n     * the value is ranked. The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {*} Returns the minimum value.\n     * @example\n     *\n     * var objects = [{ 'n': 1 }, { 'n': 2 }];\n     *\n     * _.minBy(objects, function(o) { return o.n; });\n     * // => { 'n': 1 }\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.minBy(objects, 'n');\n     * // => { 'n': 1 }\n     */\n    function minBy(array, iteratee) {\n      return (array && array.length)\n        ? baseExtremum(array, getIteratee(iteratee, 2), baseLt)\n        : undefined;\n    }\n\n    /**\n     * Multiply two numbers.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.7.0\n     * @category Math\n     * @param {number} multiplier The first number in a multiplication.\n     * @param {number} multiplicand The second number in a multiplication.\n     * @returns {number} Returns the product.\n     * @example\n     *\n     * _.multiply(6, 4);\n     * // => 24\n     */\n    var multiply = createMathOperation(function(multiplier, multiplicand) {\n      return multiplier * multiplicand;\n    }, 1);\n\n    /**\n     * Computes `number` rounded to `precision`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.10.0\n     * @category Math\n     * @param {number} number The number to round.\n     * @param {number} [precision=0] The precision to round to.\n     * @returns {number} Returns the rounded number.\n     * @example\n     *\n     * _.round(4.006);\n     * // => 4\n     *\n     * _.round(4.006, 2);\n     * // => 4.01\n     *\n     * _.round(4060, -2);\n     * // => 4100\n     */\n    var round = createRound('round');\n\n    /**\n     * Subtract two numbers.\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {number} minuend The first number in a subtraction.\n     * @param {number} subtrahend The second number in a subtraction.\n     * @returns {number} Returns the difference.\n     * @example\n     *\n     * _.subtract(6, 4);\n     * // => 2\n     */\n    var subtract = createMathOperation(function(minuend, subtrahend) {\n      return minuend - subtrahend;\n    }, 0);\n\n    /**\n     * Computes the sum of the values in `array`.\n     *\n     * @static\n     * @memberOf _\n     * @since 3.4.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @returns {number} Returns the sum.\n     * @example\n     *\n     * _.sum([4, 2, 8, 6]);\n     * // => 20\n     */\n    function sum(array) {\n      return (array && array.length)\n        ? baseSum(array, identity)\n        : 0;\n    }\n\n    /**\n     * This method is like `_.sum` except that it accepts `iteratee` which is\n     * invoked for each element in `array` to generate the value to be summed.\n     * The iteratee is invoked with one argument: (value).\n     *\n     * @static\n     * @memberOf _\n     * @since 4.0.0\n     * @category Math\n     * @param {Array} array The array to iterate over.\n     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n     * @returns {number} Returns the sum.\n     * @example\n     *\n     * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];\n     *\n     * _.sumBy(objects, function(o) { return o.n; });\n     * // => 20\n     *\n     * // The `_.property` iteratee shorthand.\n     * _.sumBy(objects, 'n');\n     * // => 20\n     */\n    function sumBy(array, iteratee) {\n      return (array && array.length)\n        ? baseSum(array, getIteratee(iteratee, 2))\n        : 0;\n    }\n\n    /*------------------------------------------------------------------------*/\n\n    // Add methods that return wrapped values in chain sequences.\n    lodash.after = after;\n    lodash.ary = ary;\n    lodash.assign = assign;\n    lodash.assignIn = assignIn;\n    lodash.assignInWith = assignInWith;\n    lodash.assignWith = assignWith;\n    lodash.at = at;\n    lodash.before = before;\n    lodash.bind = bind;\n    lodash.bindAll = bindAll;\n    lodash.bindKey = bindKey;\n    lodash.castArray = castArray;\n    lodash.chain = chain;\n    lodash.chunk = chunk;\n    lodash.compact = compact;\n    lodash.concat = concat;\n    lodash.cond = cond;\n    lodash.conforms = conforms;\n    lodash.constant = constant;\n    lodash.countBy = countBy;\n    lodash.create = create;\n    lodash.curry = curry;\n    lodash.curryRight = curryRight;\n    lodash.debounce = debounce;\n    lodash.defaults = defaults;\n    lodash.defaultsDeep = defaultsDeep;\n    lodash.defer = defer;\n    lodash.delay = delay;\n    lodash.difference = difference;\n    lodash.differenceBy = differenceBy;\n    lodash.differenceWith = differenceWith;\n    lodash.drop = drop;\n    lodash.dropRight = dropRight;\n    lodash.dropRightWhile = dropRightWhile;\n    lodash.dropWhile = dropWhile;\n    lodash.fill = fill;\n    lodash.filter = filter;\n    lodash.flatMap = flatMap;\n    lodash.flatMapDeep = flatMapDeep;\n    lodash.flatMapDepth = flatMapDepth;\n    lodash.flatten = flatten;\n    lodash.flattenDeep = flattenDeep;\n    lodash.flattenDepth = flattenDepth;\n    lodash.flip = flip;\n    lodash.flow = flow;\n    lodash.flowRight = flowRight;\n    lodash.fromPairs = fromPairs;\n    lodash.functions = functions;\n    lodash.functionsIn = functionsIn;\n    lodash.groupBy = groupBy;\n    lodash.initial = initial;\n    lodash.intersection = intersection;\n    lodash.intersectionBy = intersectionBy;\n    lodash.intersectionWith = intersectionWith;\n    lodash.invert = invert;\n    lodash.invertBy = invertBy;\n    lodash.invokeMap = invokeMap;\n    lodash.iteratee = iteratee;\n    lodash.keyBy = keyBy;\n    lodash.keys = keys;\n    lodash.keysIn = keysIn;\n    lodash.map = map;\n    lodash.mapKeys = mapKeys;\n    lodash.mapValues = mapValues;\n    lodash.matches = matches;\n    lodash.matchesProperty = matchesProperty;\n    lodash.memoize = memoize;\n    lodash.merge = merge;\n    lodash.mergeWith = mergeWith;\n    lodash.method = method;\n    lodash.methodOf = methodOf;\n    lodash.mixin = mixin;\n    lodash.negate = negate;\n    lodash.nthArg = nthArg;\n    lodash.omit = omit;\n    lodash.omitBy = omitBy;\n    lodash.once = once;\n    lodash.orderBy = orderBy;\n    lodash.over = over;\n    lodash.overArgs = overArgs;\n    lodash.overEvery = overEvery;\n    lodash.overSome = overSome;\n    lodash.partial = partial;\n    lodash.partialRight = partialRight;\n    lodash.partition = partition;\n    lodash.pick = pick;\n    lodash.pickBy = pickBy;\n    lodash.property = property;\n    lodash.propertyOf = propertyOf;\n    lodash.pull = pull;\n    lodash.pullAll = pullAll;\n    lodash.pullAllBy = pullAllBy;\n    lodash.pullAllWith = pullAllWith;\n    lodash.pullAt = pullAt;\n    lodash.range = range;\n    lodash.rangeRight = rangeRight;\n    lodash.rearg = rearg;\n    lodash.reject = reject;\n    lodash.remove = remove;\n    lodash.rest = rest;\n    lodash.reverse = reverse;\n    lodash.sampleSize = sampleSize;\n    lodash.set = set;\n    lodash.setWith = setWith;\n    lodash.shuffle = shuffle;\n    lodash.slice = slice;\n    lodash.sortBy = sortBy;\n    lodash.sortedUniq = sortedUniq;\n    lodash.sortedUniqBy = sortedUniqBy;\n    lodash.split = split;\n    lodash.spread = spread;\n    lodash.tail = tail;\n    lodash.take = take;\n    lodash.takeRight = takeRight;\n    lodash.takeRightWhile = takeRightWhile;\n    lodash.takeWhile = takeWhile;\n    lodash.tap = tap;\n    lodash.throttle = throttle;\n    lodash.thru = thru;\n    lodash.toArray = toArray;\n    lodash.toPairs = toPairs;\n    lodash.toPairsIn = toPairsIn;\n    lodash.toPath = toPath;\n    lodash.toPlainObject = toPlainObject;\n    lodash.transform = transform;\n    lodash.unary = unary;\n    lodash.union = union;\n    lodash.unionBy = unionBy;\n    lodash.unionWith = unionWith;\n    lodash.uniq = uniq;\n    lodash.uniqBy = uniqBy;\n    lodash.uniqWith = uniqWith;\n    lodash.unset = unset;\n    lodash.unzip = unzip;\n    lodash.unzipWith = unzipWith;\n    lodash.update = update;\n    lodash.updateWith = updateWith;\n    lodash.values = values;\n    lodash.valuesIn = valuesIn;\n    lodash.without = without;\n    lodash.words = words;\n    lodash.wrap = wrap;\n    lodash.xor = xor;\n    lodash.xorBy = xorBy;\n    lodash.xorWith = xorWith;\n    lodash.zip = zip;\n    lodash.zipObject = zipObject;\n    lodash.zipObjectDeep = zipObjectDeep;\n    lodash.zipWith = zipWith;\n\n    // Add aliases.\n    lodash.entries = toPairs;\n    lodash.entriesIn = toPairsIn;\n    lodash.extend = assignIn;\n    lodash.extendWith = assignInWith;\n\n    // Add methods to `lodash.prototype`.\n    mixin(lodash, lodash);\n\n    /*------------------------------------------------------------------------*/\n\n    // Add methods that return unwrapped values in chain sequences.\n    lodash.add = add;\n    lodash.attempt = attempt;\n    lodash.camelCase = camelCase;\n    lodash.capitalize = capitalize;\n    lodash.ceil = ceil;\n    lodash.clamp = clamp;\n    lodash.clone = clone;\n    lodash.cloneDeep = cloneDeep;\n    lodash.cloneDeepWith = cloneDeepWith;\n    lodash.cloneWith = cloneWith;\n    lodash.conformsTo = conformsTo;\n    lodash.deburr = deburr;\n    lodash.defaultTo = defaultTo;\n    lodash.divide = divide;\n    lodash.endsWith = endsWith;\n    lodash.eq = eq;\n    lodash.escape = escape;\n    lodash.escapeRegExp = escapeRegExp;\n    lodash.every = every;\n    lodash.find = find;\n    lodash.findIndex = findIndex;\n    lodash.findKey = findKey;\n    lodash.findLast = findLast;\n    lodash.findLastIndex = findLastIndex;\n    lodash.findLastKey = findLastKey;\n    lodash.floor = floor;\n    lodash.forEach = forEach;\n    lodash.forEachRight = forEachRight;\n    lodash.forIn = forIn;\n    lodash.forInRight = forInRight;\n    lodash.forOwn = forOwn;\n    lodash.forOwnRight = forOwnRight;\n    lodash.get = get;\n    lodash.gt = gt;\n    lodash.gte = gte;\n    lodash.has = has;\n    lodash.hasIn = hasIn;\n    lodash.head = head;\n    lodash.identity = identity;\n    lodash.includes = includes;\n    lodash.indexOf = indexOf;\n    lodash.inRange = inRange;\n    lodash.invoke = invoke;\n    lodash.isArguments = isArguments;\n    lodash.isArray = isArray;\n    lodash.isArrayBuffer = isArrayBuffer;\n    lodash.isArrayLike = isArrayLike;\n    lodash.isArrayLikeObject = isArrayLikeObject;\n    lodash.isBoolean = isBoolean;\n    lodash.isBuffer = isBuffer;\n    lodash.isDate = isDate;\n    lodash.isElement = isElement;\n    lodash.isEmpty = isEmpty;\n    lodash.isEqual = isEqual;\n    lodash.isEqualWith = isEqualWith;\n    lodash.isError = isError;\n    lodash.isFinite = isFinite;\n    lodash.isFunction = isFunction;\n    lodash.isInteger = isInteger;\n    lodash.isLength = isLength;\n    lodash.isMap = isMap;\n    lodash.isMatch = isMatch;\n    lodash.isMatchWith = isMatchWith;\n    lodash.isNaN = isNaN;\n    lodash.isNative = isNative;\n    lodash.isNil = isNil;\n    lodash.isNull = isNull;\n    lodash.isNumber = isNumber;\n    lodash.isObject = isObject;\n    lodash.isObjectLike = isObjectLike;\n    lodash.isPlainObject = isPlainObject;\n    lodash.isRegExp = isRegExp;\n    lodash.isSafeInteger = isSafeInteger;\n    lodash.isSet = isSet;\n    lodash.isString = isString;\n    lodash.isSymbol = isSymbol;\n    lodash.isTypedArray = isTypedArray;\n    lodash.isUndefined = isUndefined;\n    lodash.isWeakMap = isWeakMap;\n    lodash.isWeakSet = isWeakSet;\n    lodash.join = join;\n    lodash.kebabCase = kebabCase;\n    lodash.last = last;\n    lodash.lastIndexOf = lastIndexOf;\n    lodash.lowerCase = lowerCase;\n    lodash.lowerFirst = lowerFirst;\n    lodash.lt = lt;\n    lodash.lte = lte;\n    lodash.max = max;\n    lodash.maxBy = maxBy;\n    lodash.mean = mean;\n    lodash.meanBy = meanBy;\n    lodash.min = min;\n    lodash.minBy = minBy;\n    lodash.stubArray = stubArray;\n    lodash.stubFalse = stubFalse;\n    lodash.stubObject = stubObject;\n    lodash.stubString = stubString;\n    lodash.stubTrue = stubTrue;\n    lodash.multiply = multiply;\n    lodash.nth = nth;\n    lodash.noConflict = noConflict;\n    lodash.noop = noop;\n    lodash.now = now;\n    lodash.pad = pad;\n    lodash.padEnd = padEnd;\n    lodash.padStart = padStart;\n    lodash.parseInt = parseInt;\n    lodash.random = random;\n    lodash.reduce = reduce;\n    lodash.reduceRight = reduceRight;\n    lodash.repeat = repeat;\n    lodash.replace = replace;\n    lodash.result = result;\n    lodash.round = round;\n    lodash.runInContext = runInContext;\n    lodash.sample = sample;\n    lodash.size = size;\n    lodash.snakeCase = snakeCase;\n    lodash.some = some;\n    lodash.sortedIndex = sortedIndex;\n    lodash.sortedIndexBy = sortedIndexBy;\n    lodash.sortedIndexOf = sortedIndexOf;\n    lodash.sortedLastIndex = sortedLastIndex;\n    lodash.sortedLastIndexBy = sortedLastIndexBy;\n    lodash.sortedLastIndexOf = sortedLastIndexOf;\n    lodash.startCase = startCase;\n    lodash.startsWith = startsWith;\n    lodash.subtract = subtract;\n    lodash.sum = sum;\n    lodash.sumBy = sumBy;\n    lodash.template = template;\n    lodash.times = times;\n    lodash.toFinite = toFinite;\n    lodash.toInteger = toInteger;\n    lodash.toLength = toLength;\n    lodash.toLower = toLower;\n    lodash.toNumber = toNumber;\n    lodash.toSafeInteger = toSafeInteger;\n    lodash.toString = toString;\n    lodash.toUpper = toUpper;\n    lodash.trim = trim;\n    lodash.trimEnd = trimEnd;\n    lodash.trimStart = trimStart;\n    lodash.truncate = truncate;\n    lodash.unescape = unescape;\n    lodash.uniqueId = uniqueId;\n    lodash.upperCase = upperCase;\n    lodash.upperFirst = upperFirst;\n\n    // Add aliases.\n    lodash.each = forEach;\n    lodash.eachRight = forEachRight;\n    lodash.first = head;\n\n    mixin(lodash, (function() {\n      var source = {};\n      baseForOwn(lodash, function(func, methodName) {\n        if (!hasOwnProperty.call(lodash.prototype, methodName)) {\n          source[methodName] = func;\n        }\n      });\n      return source;\n    }()), { 'chain': false });\n\n    /*------------------------------------------------------------------------*/\n\n    /**\n     * The semantic version number.\n     *\n     * @static\n     * @memberOf _\n     * @type {string}\n     */\n    lodash.VERSION = VERSION;\n\n    // Assign default placeholders.\n    arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function(methodName) {\n      lodash[methodName].placeholder = lodash;\n    });\n\n    // Add `LazyWrapper` methods for `_.drop` and `_.take` variants.\n    arrayEach(['drop', 'take'], function(methodName, index) {\n      LazyWrapper.prototype[methodName] = function(n) {\n        n = n === undefined ? 1 : nativeMax(toInteger(n), 0);\n\n        var result = (this.__filtered__ && !index)\n          ? new LazyWrapper(this)\n          : this.clone();\n\n        if (result.__filtered__) {\n          result.__takeCount__ = nativeMin(n, result.__takeCount__);\n        } else {\n          result.__views__.push({\n            'size': nativeMin(n, MAX_ARRAY_LENGTH),\n            'type': methodName + (result.__dir__ < 0 ? 'Right' : '')\n          });\n        }\n        return result;\n      };\n\n      LazyWrapper.prototype[methodName + 'Right'] = function(n) {\n        return this.reverse()[methodName](n).reverse();\n      };\n    });\n\n    // Add `LazyWrapper` methods that accept an `iteratee` value.\n    arrayEach(['filter', 'map', 'takeWhile'], function(methodName, index) {\n      var type = index + 1,\n          isFilter = type == LAZY_FILTER_FLAG || type == LAZY_WHILE_FLAG;\n\n      LazyWrapper.prototype[methodName] = function(iteratee) {\n        var result = this.clone();\n        result.__iteratees__.push({\n          'iteratee': getIteratee(iteratee, 3),\n          'type': type\n        });\n        result.__filtered__ = result.__filtered__ || isFilter;\n        return result;\n      };\n    });\n\n    // Add `LazyWrapper` methods for `_.head` and `_.last`.\n    arrayEach(['head', 'last'], function(methodName, index) {\n      var takeName = 'take' + (index ? 'Right' : '');\n\n      LazyWrapper.prototype[methodName] = function() {\n        return this[takeName](1).value()[0];\n      };\n    });\n\n    // Add `LazyWrapper` methods for `_.initial` and `_.tail`.\n    arrayEach(['initial', 'tail'], function(methodName, index) {\n      var dropName = 'drop' + (index ? '' : 'Right');\n\n      LazyWrapper.prototype[methodName] = function() {\n        return this.__filtered__ ? new LazyWrapper(this) : this[dropName](1);\n      };\n    });\n\n    LazyWrapper.prototype.compact = function() {\n      return this.filter(identity);\n    };\n\n    LazyWrapper.prototype.find = function(predicate) {\n      return this.filter(predicate).head();\n    };\n\n    LazyWrapper.prototype.findLast = function(predicate) {\n      return this.reverse().find(predicate);\n    };\n\n    LazyWrapper.prototype.invokeMap = baseRest(function(path, args) {\n      if (typeof path == 'function') {\n        return new LazyWrapper(this);\n      }\n      return this.map(function(value) {\n        return baseInvoke(value, path, args);\n      });\n    });\n\n    LazyWrapper.prototype.reject = function(predicate) {\n      return this.filter(negate(getIteratee(predicate)));\n    };\n\n    LazyWrapper.prototype.slice = function(start, end) {\n      start = toInteger(start);\n\n      var result = this;\n      if (result.__filtered__ && (start > 0 || end < 0)) {\n        return new LazyWrapper(result);\n      }\n      if (start < 0) {\n        result = result.takeRight(-start);\n      } else if (start) {\n        result = result.drop(start);\n      }\n      if (end !== undefined) {\n        end = toInteger(end);\n        result = end < 0 ? result.dropRight(-end) : result.take(end - start);\n      }\n      return result;\n    };\n\n    LazyWrapper.prototype.takeRightWhile = function(predicate) {\n      return this.reverse().takeWhile(predicate).reverse();\n    };\n\n    LazyWrapper.prototype.toArray = function() {\n      return this.take(MAX_ARRAY_LENGTH);\n    };\n\n    // Add `LazyWrapper` methods to `lodash.prototype`.\n    baseForOwn(LazyWrapper.prototype, function(func, methodName) {\n      var checkIteratee = /^(?:filter|find|map|reject)|While$/.test(methodName),\n          isTaker = /^(?:head|last)$/.test(methodName),\n          lodashFunc = lodash[isTaker ? ('take' + (methodName == 'last' ? 'Right' : '')) : methodName],\n          retUnwrapped = isTaker || /^find/.test(methodName);\n\n      if (!lodashFunc) {\n        return;\n      }\n      lodash.prototype[methodName] = function() {\n        var value = this.__wrapped__,\n            args = isTaker ? [1] : arguments,\n            isLazy = value instanceof LazyWrapper,\n            iteratee = args[0],\n            useLazy = isLazy || isArray(value);\n\n        var interceptor = function(value) {\n          var result = lodashFunc.apply(lodash, arrayPush([value], args));\n          return (isTaker && chainAll) ? result[0] : result;\n        };\n\n        if (useLazy && checkIteratee && typeof iteratee == 'function' && iteratee.length != 1) {\n          // Avoid lazy use if the iteratee has a \"length\" value other than `1`.\n          isLazy = useLazy = false;\n        }\n        var chainAll = this.__chain__,\n            isHybrid = !!this.__actions__.length,\n            isUnwrapped = retUnwrapped && !chainAll,\n            onlyLazy = isLazy && !isHybrid;\n\n        if (!retUnwrapped && useLazy) {\n          value = onlyLazy ? value : new LazyWrapper(this);\n          var result = func.apply(value, args);\n          result.__actions__.push({ 'func': thru, 'args': [interceptor], 'thisArg': undefined });\n          return new LodashWrapper(result, chainAll);\n        }\n        if (isUnwrapped && onlyLazy) {\n          return func.apply(this, args);\n        }\n        result = this.thru(interceptor);\n        return isUnwrapped ? (isTaker ? result.value()[0] : result.value()) : result;\n      };\n    });\n\n    // Add `Array` methods to `lodash.prototype`.\n    arrayEach(['pop', 'push', 'shift', 'sort', 'splice', 'unshift'], function(methodName) {\n      var func = arrayProto[methodName],\n          chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru',\n          retUnwrapped = /^(?:pop|shift)$/.test(methodName);\n\n      lodash.prototype[methodName] = function() {\n        var args = arguments;\n        if (retUnwrapped && !this.__chain__) {\n          var value = this.value();\n          return func.apply(isArray(value) ? value : [], args);\n        }\n        return this[chainName](function(value) {\n          return func.apply(isArray(value) ? value : [], args);\n        });\n      };\n    });\n\n    // Map minified method names to their real names.\n    baseForOwn(LazyWrapper.prototype, function(func, methodName) {\n      var lodashFunc = lodash[methodName];\n      if (lodashFunc) {\n        var key = lodashFunc.name + '';\n        if (!hasOwnProperty.call(realNames, key)) {\n          realNames[key] = [];\n        }\n        realNames[key].push({ 'name': methodName, 'func': lodashFunc });\n      }\n    });\n\n    realNames[createHybrid(undefined, WRAP_BIND_KEY_FLAG).name] = [{\n      'name': 'wrapper',\n      'func': undefined\n    }];\n\n    // Add methods to `LazyWrapper`.\n    LazyWrapper.prototype.clone = lazyClone;\n    LazyWrapper.prototype.reverse = lazyReverse;\n    LazyWrapper.prototype.value = lazyValue;\n\n    // Add chain sequence methods to the `lodash` wrapper.\n    lodash.prototype.at = wrapperAt;\n    lodash.prototype.chain = wrapperChain;\n    lodash.prototype.commit = wrapperCommit;\n    lodash.prototype.next = wrapperNext;\n    lodash.prototype.plant = wrapperPlant;\n    lodash.prototype.reverse = wrapperReverse;\n    lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = wrapperValue;\n\n    // Add lazy aliases.\n    lodash.prototype.first = lodash.prototype.head;\n\n    if (symIterator) {\n      lodash.prototype[symIterator] = wrapperToIterator;\n    }\n    return lodash;\n  });\n\n  /*--------------------------------------------------------------------------*/\n\n  // Export lodash.\n  var _ = runInContext();\n\n  // Some AMD build optimizers, like r.js, check for condition patterns like:\n  if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) {\n    // Expose Lodash on the global object to prevent errors when Lodash is\n    // loaded by a script tag in the presence of an AMD loader.\n    // See http://requirejs.org/docs/errors.html#mismatch for more details.\n    // Use `_.noConflict` to remove Lodash from the global object.\n    root._ = _;\n\n    // Define as an anonymous module so, through path mapping, it can be\n    // referenced as the \"underscore\" module.\n    define(function() {\n      return _;\n    });\n  }\n  // Check for `exports` after `define` in case a build optimizer adds it.\n  else if (freeModule) {\n    // Export for Node.js.\n    (freeModule.exports = _)._ = _;\n    // Export for CommonJS support.\n    freeExports._ = _;\n  }\n  else {\n    // Export to the global object.\n    root._ = _;\n  }\n}.call(this));\n","var isarray = require('isarray')\n\n/**\n * Expose `pathToRegexp`.\n */\nmodule.exports = pathToRegexp\nmodule.exports.parse = parse\nmodule.exports.compile = compile\nmodule.exports.tokensToFunction = tokensToFunction\nmodule.exports.tokensToRegExp = tokensToRegExp\n\n/**\n * The main path matching regexp utility.\n *\n * @type {RegExp}\n */\nvar PATH_REGEXP = new RegExp([\n  // Match escaped characters that would otherwise appear in future matches.\n  // This allows the user to escape special characters that won't transform.\n  '(\\\\\\\\.)',\n  // Match Express-style parameters and un-named parameters with a prefix\n  // and optional suffixes. Matches appear as:\n  //\n  // \"/:test(\\\\d+)?\" => [\"/\", \"test\", \"\\d+\", undefined, \"?\", undefined]\n  // \"/route(\\\\d+)\"  => [undefined, undefined, undefined, \"\\d+\", undefined, undefined]\n  // \"/*\"            => [\"/\", undefined, undefined, undefined, undefined, \"*\"]\n  '([\\\\/.])?(?:(?:\\\\:(\\\\w+)(?:\\\\(((?:\\\\\\\\.|[^\\\\\\\\()])+)\\\\))?|\\\\(((?:\\\\\\\\.|[^\\\\\\\\()])+)\\\\))([+*?])?|(\\\\*))'\n].join('|'), 'g')\n\n/**\n * Parse a string for the raw tokens.\n *\n * @param  {string}  str\n * @param  {Object=} options\n * @return {!Array}\n */\nfunction parse (str, options) {\n  var tokens = []\n  var key = 0\n  var index = 0\n  var path = ''\n  var defaultDelimiter = options && options.delimiter || '/'\n  var res\n\n  while ((res = PATH_REGEXP.exec(str)) != null) {\n    var m = res[0]\n    var escaped = res[1]\n    var offset = res.index\n    path += str.slice(index, offset)\n    index = offset + m.length\n\n    // Ignore already escaped sequences.\n    if (escaped) {\n      path += escaped[1]\n      continue\n    }\n\n    var next = str[index]\n    var prefix = res[2]\n    var name = res[3]\n    var capture = res[4]\n    var group = res[5]\n    var modifier = res[6]\n    var asterisk = res[7]\n\n    // Push the current path onto the tokens.\n    if (path) {\n      tokens.push(path)\n      path = ''\n    }\n\n    var partial = prefix != null && next != null && next !== prefix\n    var repeat = modifier === '+' || modifier === '*'\n    var optional = modifier === '?' || modifier === '*'\n    var delimiter = res[2] || defaultDelimiter\n    var pattern = capture || group\n\n    tokens.push({\n      name: name || key++,\n      prefix: prefix || '',\n      delimiter: delimiter,\n      optional: optional,\n      repeat: repeat,\n      partial: partial,\n      asterisk: !!asterisk,\n      pattern: pattern ? escapeGroup(pattern) : (asterisk ? '.*' : '[^' + escapeString(delimiter) + ']+?')\n    })\n  }\n\n  // Match any characters still remaining.\n  if (index < str.length) {\n    path += str.substr(index)\n  }\n\n  // If the path exists, push it onto the end.\n  if (path) {\n    tokens.push(path)\n  }\n\n  return tokens\n}\n\n/**\n * Compile a string to a template function for the path.\n *\n * @param  {string}             str\n * @param  {Object=}            options\n * @return {!function(Object=, Object=)}\n */\nfunction compile (str, options) {\n  return tokensToFunction(parse(str, options), options)\n}\n\n/**\n * Prettier encoding of URI path segments.\n *\n * @param  {string}\n * @return {string}\n */\nfunction encodeURIComponentPretty (str) {\n  return encodeURI(str).replace(/[\\/?#]/g, function (c) {\n    return '%' + c.charCodeAt(0).toString(16).toUpperCase()\n  })\n}\n\n/**\n * Encode the asterisk parameter. Similar to `pretty`, but allows slashes.\n *\n * @param  {string}\n * @return {string}\n */\nfunction encodeAsterisk (str) {\n  return encodeURI(str).replace(/[?#]/g, function (c) {\n    return '%' + c.charCodeAt(0).toString(16).toUpperCase()\n  })\n}\n\n/**\n * Expose a method for transforming tokens into the path function.\n */\nfunction tokensToFunction (tokens, options) {\n  // Compile all the tokens into regexps.\n  var matches = new Array(tokens.length)\n\n  // Compile all the patterns before compilation.\n  for (var i = 0; i < tokens.length; i++) {\n    if (typeof tokens[i] === 'object') {\n      matches[i] = new RegExp('^(?:' + tokens[i].pattern + ')$', flags(options))\n    }\n  }\n\n  return function (obj, opts) {\n    var path = ''\n    var data = obj || {}\n    var options = opts || {}\n    var encode = options.pretty ? encodeURIComponentPretty : encodeURIComponent\n\n    for (var i = 0; i < tokens.length; i++) {\n      var token = tokens[i]\n\n      if (typeof token === 'string') {\n        path += token\n\n        continue\n      }\n\n      var value = data[token.name]\n      var segment\n\n      if (value == null) {\n        if (token.optional) {\n          // Prepend partial segment prefixes.\n          if (token.partial) {\n            path += token.prefix\n          }\n\n          continue\n        } else {\n          throw new TypeError('Expected \"' + token.name + '\" to be defined')\n        }\n      }\n\n      if (isarray(value)) {\n        if (!token.repeat) {\n          throw new TypeError('Expected \"' + token.name + '\" to not repeat, but received `' + JSON.stringify(value) + '`')\n        }\n\n        if (value.length === 0) {\n          if (token.optional) {\n            continue\n          } else {\n            throw new TypeError('Expected \"' + token.name + '\" to not be empty')\n          }\n        }\n\n        for (var j = 0; j < value.length; j++) {\n          segment = encode(value[j])\n\n          if (!matches[i].test(segment)) {\n            throw new TypeError('Expected all \"' + token.name + '\" to match \"' + token.pattern + '\", but received `' + JSON.stringify(segment) + '`')\n          }\n\n          path += (j === 0 ? token.prefix : token.delimiter) + segment\n        }\n\n        continue\n      }\n\n      segment = token.asterisk ? encodeAsterisk(value) : encode(value)\n\n      if (!matches[i].test(segment)) {\n        throw new TypeError('Expected \"' + token.name + '\" to match \"' + token.pattern + '\", but received \"' + segment + '\"')\n      }\n\n      path += token.prefix + segment\n    }\n\n    return path\n  }\n}\n\n/**\n * Escape a regular expression string.\n *\n * @param  {string} str\n * @return {string}\n */\nfunction escapeString (str) {\n  return str.replace(/([.+*?=^!:${}()[\\]|\\/\\\\])/g, '\\\\$1')\n}\n\n/**\n * Escape the capturing group by escaping special characters and meaning.\n *\n * @param  {string} group\n * @return {string}\n */\nfunction escapeGroup (group) {\n  return group.replace(/([=!:$\\/()])/g, '\\\\$1')\n}\n\n/**\n * Attach the keys as a property of the regexp.\n *\n * @param  {!RegExp} re\n * @param  {Array}   keys\n * @return {!RegExp}\n */\nfunction attachKeys (re, keys) {\n  re.keys = keys\n  return re\n}\n\n/**\n * Get the flags for a regexp from the options.\n *\n * @param  {Object} options\n * @return {string}\n */\nfunction flags (options) {\n  return options && options.sensitive ? '' : 'i'\n}\n\n/**\n * Pull out keys from a regexp.\n *\n * @param  {!RegExp} path\n * @param  {!Array}  keys\n * @return {!RegExp}\n */\nfunction regexpToRegexp (path, keys) {\n  // Use a negative lookahead to match only capturing groups.\n  var groups = path.source.match(/\\((?!\\?)/g)\n\n  if (groups) {\n    for (var i = 0; i < groups.length; i++) {\n      keys.push({\n        name: i,\n        prefix: null,\n        delimiter: null,\n        optional: false,\n        repeat: false,\n        partial: false,\n        asterisk: false,\n        pattern: null\n      })\n    }\n  }\n\n  return attachKeys(path, keys)\n}\n\n/**\n * Transform an array into a regexp.\n *\n * @param  {!Array}  path\n * @param  {Array}   keys\n * @param  {!Object} options\n * @return {!RegExp}\n */\nfunction arrayToRegexp (path, keys, options) {\n  var parts = []\n\n  for (var i = 0; i < path.length; i++) {\n    parts.push(pathToRegexp(path[i], keys, options).source)\n  }\n\n  var regexp = new RegExp('(?:' + parts.join('|') + ')', flags(options))\n\n  return attachKeys(regexp, keys)\n}\n\n/**\n * Create a path regexp from string input.\n *\n * @param  {string}  path\n * @param  {!Array}  keys\n * @param  {!Object} options\n * @return {!RegExp}\n */\nfunction stringToRegexp (path, keys, options) {\n  return tokensToRegExp(parse(path, options), keys, options)\n}\n\n/**\n * Expose a function for taking tokens and returning a RegExp.\n *\n * @param  {!Array}          tokens\n * @param  {(Array|Object)=} keys\n * @param  {Object=}         options\n * @return {!RegExp}\n */\nfunction tokensToRegExp (tokens, keys, options) {\n  if (!isarray(keys)) {\n    options = /** @type {!Object} */ (keys || options)\n    keys = []\n  }\n\n  options = options || {}\n\n  var strict = options.strict\n  var end = options.end !== false\n  var route = ''\n\n  // Iterate over the tokens and create our regexp string.\n  for (var i = 0; i < tokens.length; i++) {\n    var token = tokens[i]\n\n    if (typeof token === 'string') {\n      route += escapeString(token)\n    } else {\n      var prefix = escapeString(token.prefix)\n      var capture = '(?:' + token.pattern + ')'\n\n      keys.push(token)\n\n      if (token.repeat) {\n        capture += '(?:' + prefix + capture + ')*'\n      }\n\n      if (token.optional) {\n        if (!token.partial) {\n          capture = '(?:' + prefix + '(' + capture + '))?'\n        } else {\n          capture = prefix + '(' + capture + ')?'\n        }\n      } else {\n        capture = prefix + '(' + capture + ')'\n      }\n\n      route += capture\n    }\n  }\n\n  var delimiter = escapeString(options.delimiter || '/')\n  var endsWithDelimiter = route.slice(-delimiter.length) === delimiter\n\n  // In non-strict mode we allow a slash at the end of match. If the path to\n  // match already ends with a slash, we remove it for consistency. The slash\n  // is valid at the end of a path match, not in the middle. This is important\n  // in non-ending mode, where \"/test/\" shouldn't match \"/test//route\".\n  if (!strict) {\n    route = (endsWithDelimiter ? route.slice(0, -delimiter.length) : route) + '(?:' + delimiter + '(?=$))?'\n  }\n\n  if (end) {\n    route += '$'\n  } else {\n    // In non-ending mode, we need the capturing groups to match as much as\n    // possible by using a positive lookahead to the end or next path segment.\n    route += strict && endsWithDelimiter ? '' : '(?=' + delimiter + '|$)'\n  }\n\n  return attachKeys(new RegExp('^' + route, flags(options)), keys)\n}\n\n/**\n * Normalize the given path string, returning a regular expression.\n *\n * An empty array can be passed in for the keys, which will hold the\n * placeholder key descriptions. For example, using `/user/:id`, `keys` will\n * contain `[{ name: 'id', delimiter: '/', optional: false, repeat: false }]`.\n *\n * @param  {(string|RegExp|Array)} path\n * @param  {(Array|Object)=}       keys\n * @param  {Object=}               options\n * @return {!RegExp}\n */\nfunction pathToRegexp (path, keys, options) {\n  if (!isarray(keys)) {\n    options = /** @type {!Object} */ (keys || options)\n    keys = []\n  }\n\n  options = options || {}\n\n  if (path instanceof RegExp) {\n    return regexpToRegexp(path, /** @type {!Array} */ (keys))\n  }\n\n  if (isarray(path)) {\n    return arrayToRegexp(/** @type {!Array} */ (path), /** @type {!Array} */ (keys), options)\n  }\n\n  return stringToRegexp(/** @type {string} */ (path), /** @type {!Array} */ (keys), options)\n}\n","var createCompounder = require('./_createCompounder');\n\n/**\n * Converts `string` to\n * [snake case](https://en.wikipedia.org/wiki/Snake_case).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the snake cased string.\n * @example\n *\n * _.snakeCase('Foo Bar');\n * // => 'foo_bar'\n *\n * _.snakeCase('fooBar');\n * // => 'foo_bar'\n *\n * _.snakeCase('--FOO-BAR--');\n * // => 'foo_bar'\n */\nvar snakeCase = createCompounder(function(result, word, index) {\n  return result + (index ? '_' : '') + word.toLowerCase();\n});\n\nmodule.exports = snakeCase;\n","/* global window */\nimport ponyfill from './ponyfill.js';\n\nvar root;\n\nif (typeof self !== 'undefined') {\n  root = self;\n} else if (typeof window !== 'undefined') {\n  root = window;\n} else if (typeof global !== 'undefined') {\n  root = global;\n} else if (typeof module !== 'undefined') {\n  root = module;\n} else {\n  root = Function('return this')();\n}\n\nvar result = ponyfill(root);\nexport default result;\n","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n\"use strict\";\r\nimport { ProcessTelemetryContext } from \"./ProcessTelemetryContext\";\r\nimport { isFunction, isNullOrUndefined, setValue } from \"./HelperFuncs\";\r\nimport { strExtensionConfig } from \"./Constants\";\r\nvar strGetPlugin = \"getPlugin\";\r\n/**\r\n * BaseTelemetryPlugin provides a basic implementation of the ITelemetryPlugin interface so that plugins\r\n * can avoid implementation the same set of boiler plate code as well as provide a base\r\n * implementation so that new default implementations can be added without breaking all plugins.\r\n */\r\nvar BaseTelemetryPlugin = /** @class */ (function () {\r\n    function BaseTelemetryPlugin() {\r\n        var _self = this;\r\n        var _isinitialized = false;\r\n        var _rootCtx = null; // Used as the root context, holding the current config and initialized core\r\n        var _nextPlugin = null; // Used for backward compatibility where plugins don't call the main pipeline\r\n        _self.core = null;\r\n        _self.diagLog = function (itemCtx) {\r\n            return _self._getTelCtx(itemCtx).diagLog();\r\n        };\r\n        _self.isInitialized = function () {\r\n            return _isinitialized;\r\n        };\r\n        _self.setInitialized = function (isInitialized) {\r\n            _isinitialized = isInitialized;\r\n        };\r\n        // _self.getNextPlugin = () => DO NOT IMPLEMENT\r\n        // Sub-classes of this base class *should* not be relying on this value and instead\r\n        // should use processNext() function. If you require access to the plugin use the\r\n        // IProcessTelemetryContext.getNext().getPlugin() while in the pipeline, Note getNext() may return null.\r\n        _self.setNextPlugin = function (next) {\r\n            _nextPlugin = next;\r\n        };\r\n        _self.processNext = function (env, itemCtx) {\r\n            if (itemCtx) {\r\n                // Normal core execution sequence\r\n                itemCtx.processNext(env);\r\n            }\r\n            else if (_nextPlugin && isFunction(_nextPlugin.processTelemetry)) {\r\n                // Looks like backward compatibility or out of band processing. And as it looks\r\n                // like a ITelemetryPlugin or ITelemetryPluginChain, just call processTelemetry\r\n                _nextPlugin.processTelemetry(env, null);\r\n            }\r\n        };\r\n        _self._getTelCtx = function (currentCtx) {\r\n            if (currentCtx === void 0) { currentCtx = null; }\r\n            var itemCtx = currentCtx;\r\n            if (!itemCtx) {\r\n                var rootCtx = _rootCtx || new ProcessTelemetryContext(null, {}, _self.core);\r\n                // tslint:disable-next-line: prefer-conditional-expression\r\n                if (_nextPlugin && _nextPlugin[strGetPlugin]) {\r\n                    // Looks like a chain object\r\n                    itemCtx = rootCtx.createNew(null, _nextPlugin[strGetPlugin]);\r\n                }\r\n                else {\r\n                    itemCtx = rootCtx.createNew(null, _nextPlugin);\r\n                }\r\n            }\r\n            return itemCtx;\r\n        };\r\n        _self._baseTelInit = function (config, core, extensions, pluginChain) {\r\n            if (config) {\r\n                // Make sure the extensionConfig exists\r\n                setValue(config, strExtensionConfig, [], null, isNullOrUndefined);\r\n            }\r\n            if (!pluginChain && core) {\r\n                // Get the first plugin from the core\r\n                pluginChain = core.getProcessTelContext().getNext();\r\n            }\r\n            var nextPlugin = _nextPlugin;\r\n            if (_nextPlugin && _nextPlugin[strGetPlugin]) {\r\n                // If it looks like a proxy/chain then get the plugin\r\n                nextPlugin = _nextPlugin[strGetPlugin]();\r\n            }\r\n            // Support legacy plugins where core was defined as a property\r\n            _self.core = core;\r\n            _rootCtx = new ProcessTelemetryContext(pluginChain, config, core, nextPlugin);\r\n            _isinitialized = true;\r\n        };\r\n    }\r\n    BaseTelemetryPlugin.prototype.initialize = function (config, core, extensions, pluginChain) {\r\n        this._baseTelInit(config, core, extensions, pluginChain);\r\n    };\r\n    return BaseTelemetryPlugin;\r\n}());\r\nexport { BaseTelemetryPlugin };\r\n//# sourceMappingURL=BaseTelemetryPlugin.js.map","var isMergeableObject = function isMergeableObject(value) {\n\treturn isNonNullObject(value)\n\t\t&& !isSpecial(value)\n};\n\nfunction isNonNullObject(value) {\n\treturn !!value && typeof value === 'object'\n}\n\nfunction isSpecial(value) {\n\tvar stringValue = Object.prototype.toString.call(value);\n\n\treturn stringValue === '[object RegExp]'\n\t\t|| stringValue === '[object Date]'\n\t\t|| isReactElement(value)\n}\n\n// see https://github.com/facebook/react/blob/b5ac963fb791d1298e7f396236383bc955f916c1/src/isomorphic/classic/element/ReactElement.js#L21-L25\nvar canUseSymbol = typeof Symbol === 'function' && Symbol.for;\nvar REACT_ELEMENT_TYPE = canUseSymbol ? Symbol.for('react.element') : 0xeac7;\n\nfunction isReactElement(value) {\n\treturn value.$$typeof === REACT_ELEMENT_TYPE\n}\n\nfunction emptyTarget(val) {\n\treturn Array.isArray(val) ? [] : {}\n}\n\nfunction cloneUnlessOtherwiseSpecified(value, options) {\n\treturn (options.clone !== false && options.isMergeableObject(value))\n\t\t? deepmerge(emptyTarget(value), value, options)\n\t\t: value\n}\n\nfunction defaultArrayMerge(target, source, options) {\n\treturn target.concat(source).map(function(element) {\n\t\treturn cloneUnlessOtherwiseSpecified(element, options)\n\t})\n}\n\nfunction mergeObject(target, source, options) {\n\tvar destination = {};\n\tif (options.isMergeableObject(target)) {\n\t\tObject.keys(target).forEach(function(key) {\n\t\t\tdestination[key] = cloneUnlessOtherwiseSpecified(target[key], options);\n\t\t});\n\t}\n\tObject.keys(source).forEach(function(key) {\n\t\tif (!options.isMergeableObject(source[key]) || !target[key]) {\n\t\t\tdestination[key] = cloneUnlessOtherwiseSpecified(source[key], options);\n\t\t} else {\n\t\t\tdestination[key] = deepmerge(target[key], source[key], options);\n\t\t}\n\t});\n\treturn destination\n}\n\nfunction deepmerge(target, source, options) {\n\toptions = options || {};\n\toptions.arrayMerge = options.arrayMerge || defaultArrayMerge;\n\toptions.isMergeableObject = options.isMergeableObject || isMergeableObject;\n\n\tvar sourceIsArray = Array.isArray(source);\n\tvar targetIsArray = Array.isArray(target);\n\tvar sourceAndTargetTypesMatch = sourceIsArray === targetIsArray;\n\n\tif (!sourceAndTargetTypesMatch) {\n\t\treturn cloneUnlessOtherwiseSpecified(source, options)\n\t} else if (sourceIsArray) {\n\t\treturn options.arrayMerge(target, source, options)\n\t} else {\n\t\treturn mergeObject(target, source, options)\n\t}\n}\n\ndeepmerge.all = function deepmergeAll(array, options) {\n\tif (!Array.isArray(array)) {\n\t\tthrow new Error('first argument should be an array')\n\t}\n\n\treturn array.reduce(function(prev, next) {\n\t\treturn deepmerge(prev, next, options)\n\t}, {})\n};\n\nvar deepmerge_1 = deepmerge;\n\nexport default deepmerge_1;\n","import root from './_root.js';\n\n/** Built-in value references. */\nvar Symbol = root.Symbol;\n\nexport default Symbol;\n","import Symbol from './_Symbol.js';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar nativeObjectToString = objectProto.toString;\n\n/** Built-in value references. */\nvar symToStringTag = Symbol ? Symbol.toStringTag : undefined;\n\n/**\n * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the raw `toStringTag`.\n */\nfunction getRawTag(value) {\n  var isOwn = hasOwnProperty.call(value, symToStringTag),\n      tag = value[symToStringTag];\n\n  try {\n    value[symToStringTag] = undefined;\n    var unmasked = true;\n  } catch (e) {}\n\n  var result = nativeObjectToString.call(value);\n  if (unmasked) {\n    if (isOwn) {\n      value[symToStringTag] = tag;\n    } else {\n      delete value[symToStringTag];\n    }\n  }\n  return result;\n}\n\nexport default getRawTag;\n","/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar nativeObjectToString = objectProto.toString;\n\n/**\n * Converts `value` to a string using `Object.prototype.toString`.\n *\n * @private\n * @param {*} value The value to convert.\n * @returns {string} Returns the converted string.\n */\nfunction objectToString(value) {\n  return nativeObjectToString.call(value);\n}\n\nexport default objectToString;\n","import Symbol from './_Symbol.js';\nimport getRawTag from './_getRawTag.js';\nimport objectToString from './_objectToString.js';\n\n/** `Object#toString` result references. */\nvar nullTag = '[object Null]',\n    undefinedTag = '[object Undefined]';\n\n/** Built-in value references. */\nvar symToStringTag = Symbol ? Symbol.toStringTag : undefined;\n\n/**\n * The base implementation of `getTag` without fallbacks for buggy environments.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\nfunction baseGetTag(value) {\n  if (value == null) {\n    return value === undefined ? undefinedTag : nullTag;\n  }\n  return (symToStringTag && symToStringTag in Object(value))\n    ? getRawTag(value)\n    : objectToString(value);\n}\n\nexport default baseGetTag;\n","/**\n * Creates a unary function that invokes `func` with its argument transformed.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {Function} transform The argument transform.\n * @returns {Function} Returns the new function.\n */\nfunction overArg(func, transform) {\n  return function(arg) {\n    return func(transform(arg));\n  };\n}\n\nexport default overArg;\n","import overArg from './_overArg.js';\n\n/** Built-in value references. */\nvar getPrototype = overArg(Object.getPrototypeOf, Object);\n\nexport default getPrototype;\n","/**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\nfunction isObjectLike(value) {\n  return value != null && typeof value == 'object';\n}\n\nexport default isObjectLike;\n","import baseGetTag from './_baseGetTag.js';\nimport getPrototype from './_getPrototype.js';\nimport isObjectLike from './isObjectLike.js';\n\n/** `Object#toString` result references. */\nvar objectTag = '[object Object]';\n\n/** Used for built-in method references. */\nvar funcProto = Function.prototype,\n    objectProto = Object.prototype;\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = funcProto.toString;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/** Used to infer the `Object` constructor. */\nvar objectCtorString = funcToString.call(Object);\n\n/**\n * Checks if `value` is a plain object, that is, an object created by the\n * `Object` constructor or one with a `[[Prototype]]` of `null`.\n *\n * @static\n * @memberOf _\n * @since 0.8.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.\n * @example\n *\n * function Foo() {\n *   this.a = 1;\n * }\n *\n * _.isPlainObject(new Foo);\n * // => false\n *\n * _.isPlainObject([1, 2, 3]);\n * // => false\n *\n * _.isPlainObject({ 'x': 0, 'y': 0 });\n * // => true\n *\n * _.isPlainObject(Object.create(null));\n * // => true\n */\nfunction isPlainObject(value) {\n  if (!isObjectLike(value) || baseGetTag(value) != objectTag) {\n    return false;\n  }\n  var proto = getPrototype(value);\n  if (proto === null) {\n    return true;\n  }\n  var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;\n  return typeof Ctor == 'function' && Ctor instanceof Ctor &&\n    funcToString.call(Ctor) == objectCtorString;\n}\n\nexport default isPlainObject;\n","/**\n * Removes all key-value entries from the list cache.\n *\n * @private\n * @name clear\n * @memberOf ListCache\n */\nfunction listCacheClear() {\n  this.__data__ = [];\n  this.size = 0;\n}\n\nexport default listCacheClear;\n","/**\n * Performs a\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * comparison between two values to determine if they are equivalent.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'a': 1 };\n * var other = { 'a': 1 };\n *\n * _.eq(object, object);\n * // => true\n *\n * _.eq(object, other);\n * // => false\n *\n * _.eq('a', 'a');\n * // => true\n *\n * _.eq('a', Object('a'));\n * // => false\n *\n * _.eq(NaN, NaN);\n * // => true\n */\nfunction eq(value, other) {\n  return value === other || (value !== value && other !== other);\n}\n\nexport default eq;\n","import eq from './eq.js';\n\n/**\n * Gets the index at which the `key` is found in `array` of key-value pairs.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} key The key to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\nfunction assocIndexOf(array, key) {\n  var length = array.length;\n  while (length--) {\n    if (eq(array[length][0], key)) {\n      return length;\n    }\n  }\n  return -1;\n}\n\nexport default assocIndexOf;\n","import assocIndexOf from './_assocIndexOf.js';\n\n/** Used for built-in method references. */\nvar arrayProto = Array.prototype;\n\n/** Built-in value references. */\nvar splice = arrayProto.splice;\n\n/**\n * Removes `key` and its value from the list cache.\n *\n * @private\n * @name delete\n * @memberOf ListCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction listCacheDelete(key) {\n  var data = this.__data__,\n      index = assocIndexOf(data, key);\n\n  if (index < 0) {\n    return false;\n  }\n  var lastIndex = data.length - 1;\n  if (index == lastIndex) {\n    data.pop();\n  } else {\n    splice.call(data, index, 1);\n  }\n  --this.size;\n  return true;\n}\n\nexport default listCacheDelete;\n","import assocIndexOf from './_assocIndexOf.js';\n\n/**\n * Gets the list cache value for `key`.\n *\n * @private\n * @name get\n * @memberOf ListCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction listCacheGet(key) {\n  var data = this.__data__,\n      index = assocIndexOf(data, key);\n\n  return index < 0 ? undefined : data[index][1];\n}\n\nexport default listCacheGet;\n","import assocIndexOf from './_assocIndexOf.js';\n\n/**\n * Checks if a list cache value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf ListCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction listCacheHas(key) {\n  return assocIndexOf(this.__data__, key) > -1;\n}\n\nexport default listCacheHas;\n","import assocIndexOf from './_assocIndexOf.js';\n\n/**\n * Sets the list cache `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf ListCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the list cache instance.\n */\nfunction listCacheSet(key, value) {\n  var data = this.__data__,\n      index = assocIndexOf(data, key);\n\n  if (index < 0) {\n    ++this.size;\n    data.push([key, value]);\n  } else {\n    data[index][1] = value;\n  }\n  return this;\n}\n\nexport default listCacheSet;\n","import listCacheClear from './_listCacheClear.js';\nimport listCacheDelete from './_listCacheDelete.js';\nimport listCacheGet from './_listCacheGet.js';\nimport listCacheHas from './_listCacheHas.js';\nimport listCacheSet from './_listCacheSet.js';\n\n/**\n * Creates an list cache object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction ListCache(entries) {\n  var index = -1,\n      length = entries == null ? 0 : entries.length;\n\n  this.clear();\n  while (++index < length) {\n    var entry = entries[index];\n    this.set(entry[0], entry[1]);\n  }\n}\n\n// Add methods to `ListCache`.\nListCache.prototype.clear = listCacheClear;\nListCache.prototype['delete'] = listCacheDelete;\nListCache.prototype.get = listCacheGet;\nListCache.prototype.has = listCacheHas;\nListCache.prototype.set = listCacheSet;\n\nexport default ListCache;\n","import ListCache from './_ListCache.js';\n\n/**\n * Removes all key-value entries from the stack.\n *\n * @private\n * @name clear\n * @memberOf Stack\n */\nfunction stackClear() {\n  this.__data__ = new ListCache;\n  this.size = 0;\n}\n\nexport default stackClear;\n","/**\n * Removes `key` and its value from the stack.\n *\n * @private\n * @name delete\n * @memberOf Stack\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction stackDelete(key) {\n  var data = this.__data__,\n      result = data['delete'](key);\n\n  this.size = data.size;\n  return result;\n}\n\nexport default stackDelete;\n","/**\n * Gets the stack value for `key`.\n *\n * @private\n * @name get\n * @memberOf Stack\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction stackGet(key) {\n  return this.__data__.get(key);\n}\n\nexport default stackGet;\n","/**\n * Checks if a stack value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Stack\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction stackHas(key) {\n  return this.__data__.has(key);\n}\n\nexport default stackHas;\n","/**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\nfunction isObject(value) {\n  var type = typeof value;\n  return value != null && (type == 'object' || type == 'function');\n}\n\nexport default isObject;\n","import baseGetTag from './_baseGetTag.js';\nimport isObject from './isObject.js';\n\n/** `Object#toString` result references. */\nvar asyncTag = '[object AsyncFunction]',\n    funcTag = '[object Function]',\n    genTag = '[object GeneratorFunction]',\n    proxyTag = '[object Proxy]';\n\n/**\n * Checks if `value` is classified as a `Function` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a function, else `false`.\n * @example\n *\n * _.isFunction(_);\n * // => true\n *\n * _.isFunction(/abc/);\n * // => false\n */\nfunction isFunction(value) {\n  if (!isObject(value)) {\n    return false;\n  }\n  // The use of `Object#toString` avoids issues with the `typeof` operator\n  // in Safari 9 which returns 'object' for typed arrays and other constructors.\n  var tag = baseGetTag(value);\n  return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;\n}\n\nexport default isFunction;\n","import root from './_root.js';\n\n/** Used to detect overreaching core-js shims. */\nvar coreJsData = root['__core-js_shared__'];\n\nexport default coreJsData;\n","import coreJsData from './_coreJsData.js';\n\n/** Used to detect methods masquerading as native. */\nvar maskSrcKey = (function() {\n  var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');\n  return uid ? ('Symbol(src)_1.' + uid) : '';\n}());\n\n/**\n * Checks if `func` has its source masked.\n *\n * @private\n * @param {Function} func The function to check.\n * @returns {boolean} Returns `true` if `func` is masked, else `false`.\n */\nfunction isMasked(func) {\n  return !!maskSrcKey && (maskSrcKey in func);\n}\n\nexport default isMasked;\n","/** Used for built-in method references. */\nvar funcProto = Function.prototype;\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = funcProto.toString;\n\n/**\n * Converts `func` to its source code.\n *\n * @private\n * @param {Function} func The function to convert.\n * @returns {string} Returns the source code.\n */\nfunction toSource(func) {\n  if (func != null) {\n    try {\n      return funcToString.call(func);\n    } catch (e) {}\n    try {\n      return (func + '');\n    } catch (e) {}\n  }\n  return '';\n}\n\nexport default toSource;\n","import isFunction from './isFunction.js';\nimport isMasked from './_isMasked.js';\nimport isObject from './isObject.js';\nimport toSource from './_toSource.js';\n\n/**\n * Used to match `RegExp`\n * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).\n */\nvar reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g;\n\n/** Used to detect host constructors (Safari). */\nvar reIsHostCtor = /^\\[object .+?Constructor\\]$/;\n\n/** Used for built-in method references. */\nvar funcProto = Function.prototype,\n    objectProto = Object.prototype;\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = funcProto.toString;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/** Used to detect if a method is native. */\nvar reIsNative = RegExp('^' +\n  funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&')\n  .replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$'\n);\n\n/**\n * The base implementation of `_.isNative` without bad shim checks.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a native function,\n *  else `false`.\n */\nfunction baseIsNative(value) {\n  if (!isObject(value) || isMasked(value)) {\n    return false;\n  }\n  var pattern = isFunction(value) ? reIsNative : reIsHostCtor;\n  return pattern.test(toSource(value));\n}\n\nexport default baseIsNative;\n","/**\n * Gets the value at `key` of `object`.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {string} key The key of the property to get.\n * @returns {*} Returns the property value.\n */\nfunction getValue(object, key) {\n  return object == null ? undefined : object[key];\n}\n\nexport default getValue;\n","import baseIsNative from './_baseIsNative.js';\nimport getValue from './_getValue.js';\n\n/**\n * Gets the native function at `key` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {string} key The key of the method to get.\n * @returns {*} Returns the function if it's native, else `undefined`.\n */\nfunction getNative(object, key) {\n  var value = getValue(object, key);\n  return baseIsNative(value) ? value : undefined;\n}\n\nexport default getNative;\n","import getNative from './_getNative.js';\nimport root from './_root.js';\n\n/* Built-in method references that are verified to be native. */\nvar Map = getNative(root, 'Map');\n\nexport default Map;\n","import getNative from './_getNative.js';\n\n/* Built-in method references that are verified to be native. */\nvar nativeCreate = getNative(Object, 'create');\n\nexport default nativeCreate;\n","import nativeCreate from './_nativeCreate.js';\n\n/**\n * Removes all key-value entries from the hash.\n *\n * @private\n * @name clear\n * @memberOf Hash\n */\nfunction hashClear() {\n  this.__data__ = nativeCreate ? nativeCreate(null) : {};\n  this.size = 0;\n}\n\nexport default hashClear;\n","/**\n * Removes `key` and its value from the hash.\n *\n * @private\n * @name delete\n * @memberOf Hash\n * @param {Object} hash The hash to modify.\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction hashDelete(key) {\n  var result = this.has(key) && delete this.__data__[key];\n  this.size -= result ? 1 : 0;\n  return result;\n}\n\nexport default hashDelete;\n","import nativeCreate from './_nativeCreate.js';\n\n/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Gets the hash value for `key`.\n *\n * @private\n * @name get\n * @memberOf Hash\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction hashGet(key) {\n  var data = this.__data__;\n  if (nativeCreate) {\n    var result = data[key];\n    return result === HASH_UNDEFINED ? undefined : result;\n  }\n  return hasOwnProperty.call(data, key) ? data[key] : undefined;\n}\n\nexport default hashGet;\n","import nativeCreate from './_nativeCreate.js';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Checks if a hash value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Hash\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction hashHas(key) {\n  var data = this.__data__;\n  return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);\n}\n\nexport default hashHas;\n","import nativeCreate from './_nativeCreate.js';\n\n/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/**\n * Sets the hash `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Hash\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the hash instance.\n */\nfunction hashSet(key, value) {\n  var data = this.__data__;\n  this.size += this.has(key) ? 0 : 1;\n  data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;\n  return this;\n}\n\nexport default hashSet;\n","import hashClear from './_hashClear.js';\nimport hashDelete from './_hashDelete.js';\nimport hashGet from './_hashGet.js';\nimport hashHas from './_hashHas.js';\nimport hashSet from './_hashSet.js';\n\n/**\n * Creates a hash object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction Hash(entries) {\n  var index = -1,\n      length = entries == null ? 0 : entries.length;\n\n  this.clear();\n  while (++index < length) {\n    var entry = entries[index];\n    this.set(entry[0], entry[1]);\n  }\n}\n\n// Add methods to `Hash`.\nHash.prototype.clear = hashClear;\nHash.prototype['delete'] = hashDelete;\nHash.prototype.get = hashGet;\nHash.prototype.has = hashHas;\nHash.prototype.set = hashSet;\n\nexport default Hash;\n","import Hash from './_Hash.js';\nimport ListCache from './_ListCache.js';\nimport Map from './_Map.js';\n\n/**\n * Removes all key-value entries from the map.\n *\n * @private\n * @name clear\n * @memberOf MapCache\n */\nfunction mapCacheClear() {\n  this.size = 0;\n  this.__data__ = {\n    'hash': new Hash,\n    'map': new (Map || ListCache),\n    'string': new Hash\n  };\n}\n\nexport default mapCacheClear;\n","/**\n * Checks if `value` is suitable for use as unique object key.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is suitable, else `false`.\n */\nfunction isKeyable(value) {\n  var type = typeof value;\n  return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')\n    ? (value !== '__proto__')\n    : (value === null);\n}\n\nexport default isKeyable;\n","import isKeyable from './_isKeyable.js';\n\n/**\n * Gets the data for `map`.\n *\n * @private\n * @param {Object} map The map to query.\n * @param {string} key The reference key.\n * @returns {*} Returns the map data.\n */\nfunction getMapData(map, key) {\n  var data = map.__data__;\n  return isKeyable(key)\n    ? data[typeof key == 'string' ? 'string' : 'hash']\n    : data.map;\n}\n\nexport default getMapData;\n","import getMapData from './_getMapData.js';\n\n/**\n * Removes `key` and its value from the map.\n *\n * @private\n * @name delete\n * @memberOf MapCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction mapCacheDelete(key) {\n  var result = getMapData(this, key)['delete'](key);\n  this.size -= result ? 1 : 0;\n  return result;\n}\n\nexport default mapCacheDelete;\n","import getMapData from './_getMapData.js';\n\n/**\n * Gets the map value for `key`.\n *\n * @private\n * @name get\n * @memberOf MapCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction mapCacheGet(key) {\n  return getMapData(this, key).get(key);\n}\n\nexport default mapCacheGet;\n","import getMapData from './_getMapData.js';\n\n/**\n * Checks if a map value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf MapCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction mapCacheHas(key) {\n  return getMapData(this, key).has(key);\n}\n\nexport default mapCacheHas;\n","import getMapData from './_getMapData.js';\n\n/**\n * Sets the map `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf MapCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the map cache instance.\n */\nfunction mapCacheSet(key, value) {\n  var data = getMapData(this, key),\n      size = data.size;\n\n  data.set(key, value);\n  this.size += data.size == size ? 0 : 1;\n  return this;\n}\n\nexport default mapCacheSet;\n","import mapCacheClear from './_mapCacheClear.js';\nimport mapCacheDelete from './_mapCacheDelete.js';\nimport mapCacheGet from './_mapCacheGet.js';\nimport mapCacheHas from './_mapCacheHas.js';\nimport mapCacheSet from './_mapCacheSet.js';\n\n/**\n * Creates a map cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction MapCache(entries) {\n  var index = -1,\n      length = entries == null ? 0 : entries.length;\n\n  this.clear();\n  while (++index < length) {\n    var entry = entries[index];\n    this.set(entry[0], entry[1]);\n  }\n}\n\n// Add methods to `MapCache`.\nMapCache.prototype.clear = mapCacheClear;\nMapCache.prototype['delete'] = mapCacheDelete;\nMapCache.prototype.get = mapCacheGet;\nMapCache.prototype.has = mapCacheHas;\nMapCache.prototype.set = mapCacheSet;\n\nexport default MapCache;\n","import ListCache from './_ListCache.js';\nimport Map from './_Map.js';\nimport MapCache from './_MapCache.js';\n\n/** Used as the size to enable large array optimizations. */\nvar LARGE_ARRAY_SIZE = 200;\n\n/**\n * Sets the stack `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Stack\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the stack cache instance.\n */\nfunction stackSet(key, value) {\n  var data = this.__data__;\n  if (data instanceof ListCache) {\n    var pairs = data.__data__;\n    if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {\n      pairs.push([key, value]);\n      this.size = ++data.size;\n      return this;\n    }\n    data = this.__data__ = new MapCache(pairs);\n  }\n  data.set(key, value);\n  this.size = data.size;\n  return this;\n}\n\nexport default stackSet;\n","import ListCache from './_ListCache.js';\nimport stackClear from './_stackClear.js';\nimport stackDelete from './_stackDelete.js';\nimport stackGet from './_stackGet.js';\nimport stackHas from './_stackHas.js';\nimport stackSet from './_stackSet.js';\n\n/**\n * Creates a stack cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction Stack(entries) {\n  var data = this.__data__ = new ListCache(entries);\n  this.size = data.size;\n}\n\n// Add methods to `Stack`.\nStack.prototype.clear = stackClear;\nStack.prototype['delete'] = stackDelete;\nStack.prototype.get = stackGet;\nStack.prototype.has = stackHas;\nStack.prototype.set = stackSet;\n\nexport default Stack;\n","/**\n * A specialized version of `_.forEach` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns `array`.\n */\nfunction arrayEach(array, iteratee) {\n  var index = -1,\n      length = array == null ? 0 : array.length;\n\n  while (++index < length) {\n    if (iteratee(array[index], index, array) === false) {\n      break;\n    }\n  }\n  return array;\n}\n\nexport default arrayEach;\n","import getNative from './_getNative.js';\n\nvar defineProperty = (function() {\n  try {\n    var func = getNative(Object, 'defineProperty');\n    func({}, '', {});\n    return func;\n  } catch (e) {}\n}());\n\nexport default defineProperty;\n","import defineProperty from './_defineProperty.js';\n\n/**\n * The base implementation of `assignValue` and `assignMergeValue` without\n * value checks.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\nfunction baseAssignValue(object, key, value) {\n  if (key == '__proto__' && defineProperty) {\n    defineProperty(object, key, {\n      'configurable': true,\n      'enumerable': true,\n      'value': value,\n      'writable': true\n    });\n  } else {\n    object[key] = value;\n  }\n}\n\nexport default baseAssignValue;\n","import baseAssignValue from './_baseAssignValue.js';\nimport eq from './eq.js';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Assigns `value` to `key` of `object` if the existing value is not equivalent\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\nfunction assignValue(object, key, value) {\n  var objValue = object[key];\n  if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||\n      (value === undefined && !(key in object))) {\n    baseAssignValue(object, key, value);\n  }\n}\n\nexport default assignValue;\n","import assignValue from './_assignValue.js';\nimport baseAssignValue from './_baseAssignValue.js';\n\n/**\n * Copies properties of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy properties from.\n * @param {Array} props The property identifiers to copy.\n * @param {Object} [object={}] The object to copy properties to.\n * @param {Function} [customizer] The function to customize copied values.\n * @returns {Object} Returns `object`.\n */\nfunction copyObject(source, props, object, customizer) {\n  var isNew = !object;\n  object || (object = {});\n\n  var index = -1,\n      length = props.length;\n\n  while (++index < length) {\n    var key = props[index];\n\n    var newValue = customizer\n      ? customizer(object[key], source[key], key, object, source)\n      : undefined;\n\n    if (newValue === undefined) {\n      newValue = source[key];\n    }\n    if (isNew) {\n      baseAssignValue(object, key, newValue);\n    } else {\n      assignValue(object, key, newValue);\n    }\n  }\n  return object;\n}\n\nexport default copyObject;\n","/**\n * The base implementation of `_.times` without support for iteratee shorthands\n * or max array length checks.\n *\n * @private\n * @param {number} n The number of times to invoke `iteratee`.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the array of results.\n */\nfunction baseTimes(n, iteratee) {\n  var index = -1,\n      result = Array(n);\n\n  while (++index < n) {\n    result[index] = iteratee(index);\n  }\n  return result;\n}\n\nexport default baseTimes;\n","import baseGetTag from './_baseGetTag.js';\nimport isObjectLike from './isObjectLike.js';\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]';\n\n/**\n * The base implementation of `_.isArguments`.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n */\nfunction baseIsArguments(value) {\n  return isObjectLike(value) && baseGetTag(value) == argsTag;\n}\n\nexport default baseIsArguments;\n","import baseIsArguments from './_baseIsArguments.js';\nimport isObjectLike from './isObjectLike.js';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/** Built-in value references. */\nvar propertyIsEnumerable = objectProto.propertyIsEnumerable;\n\n/**\n * Checks if `value` is likely an `arguments` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n *  else `false`.\n * @example\n *\n * _.isArguments(function() { return arguments; }());\n * // => true\n *\n * _.isArguments([1, 2, 3]);\n * // => false\n */\nvar isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {\n  return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&\n    !propertyIsEnumerable.call(value, 'callee');\n};\n\nexport default isArguments;\n","/**\n * Checks if `value` is classified as an `Array` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array, else `false`.\n * @example\n *\n * _.isArray([1, 2, 3]);\n * // => true\n *\n * _.isArray(document.body.children);\n * // => false\n *\n * _.isArray('abc');\n * // => false\n *\n * _.isArray(_.noop);\n * // => false\n */\nvar isArray = Array.isArray;\n\nexport default isArray;\n","/** Used as references for various `Number` constants. */\nvar MAX_SAFE_INTEGER = 9007199254740991;\n\n/** Used to detect unsigned integer values. */\nvar reIsUint = /^(?:0|[1-9]\\d*)$/;\n\n/**\n * Checks if `value` is a valid array-like index.\n *\n * @private\n * @param {*} value The value to check.\n * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.\n * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.\n */\nfunction isIndex(value, length) {\n  var type = typeof value;\n  length = length == null ? MAX_SAFE_INTEGER : length;\n\n  return !!length &&\n    (type == 'number' ||\n      (type != 'symbol' && reIsUint.test(value))) &&\n        (value > -1 && value % 1 == 0 && value < length);\n}\n\nexport default isIndex;\n","/** Used as references for various `Number` constants. */\nvar MAX_SAFE_INTEGER = 9007199254740991;\n\n/**\n * Checks if `value` is a valid array-like length.\n *\n * **Note:** This method is loosely based on\n * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.\n * @example\n *\n * _.isLength(3);\n * // => true\n *\n * _.isLength(Number.MIN_VALUE);\n * // => false\n *\n * _.isLength(Infinity);\n * // => false\n *\n * _.isLength('3');\n * // => false\n */\nfunction isLength(value) {\n  return typeof value == 'number' &&\n    value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\n}\n\nexport default isLength;\n","import baseGetTag from './_baseGetTag.js';\nimport isLength from './isLength.js';\nimport isObjectLike from './isObjectLike.js';\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n    arrayTag = '[object Array]',\n    boolTag = '[object Boolean]',\n    dateTag = '[object Date]',\n    errorTag = '[object Error]',\n    funcTag = '[object Function]',\n    mapTag = '[object Map]',\n    numberTag = '[object Number]',\n    objectTag = '[object Object]',\n    regexpTag = '[object RegExp]',\n    setTag = '[object Set]',\n    stringTag = '[object String]',\n    weakMapTag = '[object WeakMap]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n    dataViewTag = '[object DataView]',\n    float32Tag = '[object Float32Array]',\n    float64Tag = '[object Float64Array]',\n    int8Tag = '[object Int8Array]',\n    int16Tag = '[object Int16Array]',\n    int32Tag = '[object Int32Array]',\n    uint8Tag = '[object Uint8Array]',\n    uint8ClampedTag = '[object Uint8ClampedArray]',\n    uint16Tag = '[object Uint16Array]',\n    uint32Tag = '[object Uint32Array]';\n\n/** Used to identify `toStringTag` values of typed arrays. */\nvar typedArrayTags = {};\ntypedArrayTags[float32Tag] = typedArrayTags[float64Tag] =\ntypedArrayTags[int8Tag] = typedArrayTags[int16Tag] =\ntypedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =\ntypedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =\ntypedArrayTags[uint32Tag] = true;\ntypedArrayTags[argsTag] = typedArrayTags[arrayTag] =\ntypedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =\ntypedArrayTags[dataViewTag] = typedArrayTags[dateTag] =\ntypedArrayTags[errorTag] = typedArrayTags[funcTag] =\ntypedArrayTags[mapTag] = typedArrayTags[numberTag] =\ntypedArrayTags[objectTag] = typedArrayTags[regexpTag] =\ntypedArrayTags[setTag] = typedArrayTags[stringTag] =\ntypedArrayTags[weakMapTag] = false;\n\n/**\n * The base implementation of `_.isTypedArray` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n */\nfunction baseIsTypedArray(value) {\n  return isObjectLike(value) &&\n    isLength(value.length) && !!typedArrayTags[baseGetTag(value)];\n}\n\nexport default baseIsTypedArray;\n","/**\n * The base implementation of `_.unary` without support for storing metadata.\n *\n * @private\n * @param {Function} func The function to cap arguments for.\n * @returns {Function} Returns the new capped function.\n */\nfunction baseUnary(func) {\n  return function(value) {\n    return func(value);\n  };\n}\n\nexport default baseUnary;\n","import baseIsTypedArray from './_baseIsTypedArray.js';\nimport baseUnary from './_baseUnary.js';\nimport nodeUtil from './_nodeUtil.js';\n\n/* Node.js helper references. */\nvar nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;\n\n/**\n * Checks if `value` is classified as a typed array.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n * @example\n *\n * _.isTypedArray(new Uint8Array);\n * // => true\n *\n * _.isTypedArray([]);\n * // => false\n */\nvar isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;\n\nexport default isTypedArray;\n","import baseTimes from './_baseTimes.js';\nimport isArguments from './isArguments.js';\nimport isArray from './isArray.js';\nimport isBuffer from './isBuffer.js';\nimport isIndex from './_isIndex.js';\nimport isTypedArray from './isTypedArray.js';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Creates an array of the enumerable property names of the array-like `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @param {boolean} inherited Specify returning inherited property names.\n * @returns {Array} Returns the array of property names.\n */\nfunction arrayLikeKeys(value, inherited) {\n  var isArr = isArray(value),\n      isArg = !isArr && isArguments(value),\n      isBuff = !isArr && !isArg && isBuffer(value),\n      isType = !isArr && !isArg && !isBuff && isTypedArray(value),\n      skipIndexes = isArr || isArg || isBuff || isType,\n      result = skipIndexes ? baseTimes(value.length, String) : [],\n      length = result.length;\n\n  for (var key in value) {\n    if ((inherited || hasOwnProperty.call(value, key)) &&\n        !(skipIndexes && (\n           // Safari 9 has enumerable `arguments.length` in strict mode.\n           key == 'length' ||\n           // Node.js 0.10 has enumerable non-index properties on buffers.\n           (isBuff && (key == 'offset' || key == 'parent')) ||\n           // PhantomJS 2 has enumerable non-index properties on typed arrays.\n           (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||\n           // Skip index properties.\n           isIndex(key, length)\n        ))) {\n      result.push(key);\n    }\n  }\n  return result;\n}\n\nexport default arrayLikeKeys;\n","/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Checks if `value` is likely a prototype object.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.\n */\nfunction isPrototype(value) {\n  var Ctor = value && value.constructor,\n      proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;\n\n  return value === proto;\n}\n\nexport default isPrototype;\n","import overArg from './_overArg.js';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeKeys = overArg(Object.keys, Object);\n\nexport default nativeKeys;\n","import isPrototype from './_isPrototype.js';\nimport nativeKeys from './_nativeKeys.js';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\nfunction baseKeys(object) {\n  if (!isPrototype(object)) {\n    return nativeKeys(object);\n  }\n  var result = [];\n  for (var key in Object(object)) {\n    if (hasOwnProperty.call(object, key) && key != 'constructor') {\n      result.push(key);\n    }\n  }\n  return result;\n}\n\nexport default baseKeys;\n","import isFunction from './isFunction.js';\nimport isLength from './isLength.js';\n\n/**\n * Checks if `value` is array-like. A value is considered array-like if it's\n * not a function and has a `value.length` that's an integer greater than or\n * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\n * @example\n *\n * _.isArrayLike([1, 2, 3]);\n * // => true\n *\n * _.isArrayLike(document.body.children);\n * // => true\n *\n * _.isArrayLike('abc');\n * // => true\n *\n * _.isArrayLike(_.noop);\n * // => false\n */\nfunction isArrayLike(value) {\n  return value != null && isLength(value.length) && !isFunction(value);\n}\n\nexport default isArrayLike;\n","import arrayLikeKeys from './_arrayLikeKeys.js';\nimport baseKeys from './_baseKeys.js';\nimport isArrayLike from './isArrayLike.js';\n\n/**\n * Creates an array of the own enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects. See the\n * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n * for more details.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n *   this.a = 1;\n *   this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keys(new Foo);\n * // => ['a', 'b'] (iteration order is not guaranteed)\n *\n * _.keys('hi');\n * // => ['0', '1']\n */\nfunction keys(object) {\n  return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);\n}\n\nexport default keys;\n","import copyObject from './_copyObject.js';\nimport keys from './keys.js';\n\n/**\n * The base implementation of `_.assign` without support for multiple sources\n * or `customizer` functions.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @returns {Object} Returns `object`.\n */\nfunction baseAssign(object, source) {\n  return object && copyObject(source, keys(source), object);\n}\n\nexport default baseAssign;\n","/**\n * This function is like\n * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n * except that it includes inherited enumerable properties.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\nfunction nativeKeysIn(object) {\n  var result = [];\n  if (object != null) {\n    for (var key in Object(object)) {\n      result.push(key);\n    }\n  }\n  return result;\n}\n\nexport default nativeKeysIn;\n","import isObject from './isObject.js';\nimport isPrototype from './_isPrototype.js';\nimport nativeKeysIn from './_nativeKeysIn.js';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\nfunction baseKeysIn(object) {\n  if (!isObject(object)) {\n    return nativeKeysIn(object);\n  }\n  var isProto = isPrototype(object),\n      result = [];\n\n  for (var key in object) {\n    if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {\n      result.push(key);\n    }\n  }\n  return result;\n}\n\nexport default baseKeysIn;\n","import arrayLikeKeys from './_arrayLikeKeys.js';\nimport baseKeysIn from './_baseKeysIn.js';\nimport isArrayLike from './isArrayLike.js';\n\n/**\n * Creates an array of the own and inherited enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n *   this.a = 1;\n *   this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keysIn(new Foo);\n * // => ['a', 'b', 'c'] (iteration order is not guaranteed)\n */\nfunction keysIn(object) {\n  return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);\n}\n\nexport default keysIn;\n","import copyObject from './_copyObject.js';\nimport keysIn from './keysIn.js';\n\n/**\n * The base implementation of `_.assignIn` without support for multiple sources\n * or `customizer` functions.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @returns {Object} Returns `object`.\n */\nfunction baseAssignIn(object, source) {\n  return object && copyObject(source, keysIn(source), object);\n}\n\nexport default baseAssignIn;\n","/**\n * Copies the values of `source` to `array`.\n *\n * @private\n * @param {Array} source The array to copy values from.\n * @param {Array} [array=[]] The array to copy values to.\n * @returns {Array} Returns `array`.\n */\nfunction copyArray(source, array) {\n  var index = -1,\n      length = source.length;\n\n  array || (array = Array(length));\n  while (++index < length) {\n    array[index] = source[index];\n  }\n  return array;\n}\n\nexport default copyArray;\n","/**\n * A specialized version of `_.filter` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n */\nfunction arrayFilter(array, predicate) {\n  var index = -1,\n      length = array == null ? 0 : array.length,\n      resIndex = 0,\n      result = [];\n\n  while (++index < length) {\n    var value = array[index];\n    if (predicate(value, index, array)) {\n      result[resIndex++] = value;\n    }\n  }\n  return result;\n}\n\nexport default arrayFilter;\n","/**\n * This method returns a new empty array.\n *\n * @static\n * @memberOf _\n * @since 4.13.0\n * @category Util\n * @returns {Array} Returns the new empty array.\n * @example\n *\n * var arrays = _.times(2, _.stubArray);\n *\n * console.log(arrays);\n * // => [[], []]\n *\n * console.log(arrays[0] === arrays[1]);\n * // => false\n */\nfunction stubArray() {\n  return [];\n}\n\nexport default stubArray;\n","import arrayFilter from './_arrayFilter.js';\nimport stubArray from './stubArray.js';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Built-in value references. */\nvar propertyIsEnumerable = objectProto.propertyIsEnumerable;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeGetSymbols = Object.getOwnPropertySymbols;\n\n/**\n * Creates an array of the own enumerable symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of symbols.\n */\nvar getSymbols = !nativeGetSymbols ? stubArray : function(object) {\n  if (object == null) {\n    return [];\n  }\n  object = Object(object);\n  return arrayFilter(nativeGetSymbols(object), function(symbol) {\n    return propertyIsEnumerable.call(object, symbol);\n  });\n};\n\nexport default getSymbols;\n","import copyObject from './_copyObject.js';\nimport getSymbols from './_getSymbols.js';\n\n/**\n * Copies own symbols of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy symbols from.\n * @param {Object} [object={}] The object to copy symbols to.\n * @returns {Object} Returns `object`.\n */\nfunction copySymbols(source, object) {\n  return copyObject(source, getSymbols(source), object);\n}\n\nexport default copySymbols;\n","/**\n * Appends the elements of `values` to `array`.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to append.\n * @returns {Array} Returns `array`.\n */\nfunction arrayPush(array, values) {\n  var index = -1,\n      length = values.length,\n      offset = array.length;\n\n  while (++index < length) {\n    array[offset + index] = values[index];\n  }\n  return array;\n}\n\nexport default arrayPush;\n","import arrayPush from './_arrayPush.js';\nimport getPrototype from './_getPrototype.js';\nimport getSymbols from './_getSymbols.js';\nimport stubArray from './stubArray.js';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeGetSymbols = Object.getOwnPropertySymbols;\n\n/**\n * Creates an array of the own and inherited enumerable symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of symbols.\n */\nvar getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {\n  var result = [];\n  while (object) {\n    arrayPush(result, getSymbols(object));\n    object = getPrototype(object);\n  }\n  return result;\n};\n\nexport default getSymbolsIn;\n","import copyObject from './_copyObject.js';\nimport getSymbolsIn from './_getSymbolsIn.js';\n\n/**\n * Copies own and inherited symbols of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy symbols from.\n * @param {Object} [object={}] The object to copy symbols to.\n * @returns {Object} Returns `object`.\n */\nfunction copySymbolsIn(source, object) {\n  return copyObject(source, getSymbolsIn(source), object);\n}\n\nexport default copySymbolsIn;\n","import arrayPush from './_arrayPush.js';\nimport isArray from './isArray.js';\n\n/**\n * The base implementation of `getAllKeys` and `getAllKeysIn` which uses\n * `keysFunc` and `symbolsFunc` to get the enumerable property names and\n * symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @param {Function} symbolsFunc The function to get the symbols of `object`.\n * @returns {Array} Returns the array of property names and symbols.\n */\nfunction baseGetAllKeys(object, keysFunc, symbolsFunc) {\n  var result = keysFunc(object);\n  return isArray(object) ? result : arrayPush(result, symbolsFunc(object));\n}\n\nexport default baseGetAllKeys;\n","import baseGetAllKeys from './_baseGetAllKeys.js';\nimport getSymbols from './_getSymbols.js';\nimport keys from './keys.js';\n\n/**\n * Creates an array of own enumerable property names and symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names and symbols.\n */\nfunction getAllKeys(object) {\n  return baseGetAllKeys(object, keys, getSymbols);\n}\n\nexport default getAllKeys;\n","import baseGetAllKeys from './_baseGetAllKeys.js';\nimport getSymbolsIn from './_getSymbolsIn.js';\nimport keysIn from './keysIn.js';\n\n/**\n * Creates an array of own and inherited enumerable property names and\n * symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names and symbols.\n */\nfunction getAllKeysIn(object) {\n  return baseGetAllKeys(object, keysIn, getSymbolsIn);\n}\n\nexport default getAllKeysIn;\n","import getNative from './_getNative.js';\nimport root from './_root.js';\n\n/* Built-in method references that are verified to be native. */\nvar DataView = getNative(root, 'DataView');\n\nexport default DataView;\n","import getNative from './_getNative.js';\nimport root from './_root.js';\n\n/* Built-in method references that are verified to be native. */\nvar Promise = getNative(root, 'Promise');\n\nexport default Promise;\n","import getNative from './_getNative.js';\nimport root from './_root.js';\n\n/* Built-in method references that are verified to be native. */\nvar Set = getNative(root, 'Set');\n\nexport default Set;\n","import getNative from './_getNative.js';\nimport root from './_root.js';\n\n/* Built-in method references that are verified to be native. */\nvar WeakMap = getNative(root, 'WeakMap');\n\nexport default WeakMap;\n","import DataView from './_DataView.js';\nimport Map from './_Map.js';\nimport Promise from './_Promise.js';\nimport Set from './_Set.js';\nimport WeakMap from './_WeakMap.js';\nimport baseGetTag from './_baseGetTag.js';\nimport toSource from './_toSource.js';\n\n/** `Object#toString` result references. */\nvar mapTag = '[object Map]',\n    objectTag = '[object Object]',\n    promiseTag = '[object Promise]',\n    setTag = '[object Set]',\n    weakMapTag = '[object WeakMap]';\n\nvar dataViewTag = '[object DataView]';\n\n/** Used to detect maps, sets, and weakmaps. */\nvar dataViewCtorString = toSource(DataView),\n    mapCtorString = toSource(Map),\n    promiseCtorString = toSource(Promise),\n    setCtorString = toSource(Set),\n    weakMapCtorString = toSource(WeakMap);\n\n/**\n * Gets the `toStringTag` of `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\nvar getTag = baseGetTag;\n\n// Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.\nif ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||\n    (Map && getTag(new Map) != mapTag) ||\n    (Promise && getTag(Promise.resolve()) != promiseTag) ||\n    (Set && getTag(new Set) != setTag) ||\n    (WeakMap && getTag(new WeakMap) != weakMapTag)) {\n  getTag = function(value) {\n    var result = baseGetTag(value),\n        Ctor = result == objectTag ? value.constructor : undefined,\n        ctorString = Ctor ? toSource(Ctor) : '';\n\n    if (ctorString) {\n      switch (ctorString) {\n        case dataViewCtorString: return dataViewTag;\n        case mapCtorString: return mapTag;\n        case promiseCtorString: return promiseTag;\n        case setCtorString: return setTag;\n        case weakMapCtorString: return weakMapTag;\n      }\n    }\n    return result;\n  };\n}\n\nexport default getTag;\n","/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Initializes an array clone.\n *\n * @private\n * @param {Array} array The array to clone.\n * @returns {Array} Returns the initialized clone.\n */\nfunction initCloneArray(array) {\n  var length = array.length,\n      result = new array.constructor(length);\n\n  // Add properties assigned by `RegExp#exec`.\n  if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {\n    result.index = array.index;\n    result.input = array.input;\n  }\n  return result;\n}\n\nexport default initCloneArray;\n","import root from './_root.js';\n\n/** Built-in value references. */\nvar Uint8Array = root.Uint8Array;\n\nexport default Uint8Array;\n","import Uint8Array from './_Uint8Array.js';\n\n/**\n * Creates a clone of `arrayBuffer`.\n *\n * @private\n * @param {ArrayBuffer} arrayBuffer The array buffer to clone.\n * @returns {ArrayBuffer} Returns the cloned array buffer.\n */\nfunction cloneArrayBuffer(arrayBuffer) {\n  var result = new arrayBuffer.constructor(arrayBuffer.byteLength);\n  new Uint8Array(result).set(new Uint8Array(arrayBuffer));\n  return result;\n}\n\nexport default cloneArrayBuffer;\n","import cloneArrayBuffer from './_cloneArrayBuffer.js';\n\n/**\n * Creates a clone of `dataView`.\n *\n * @private\n * @param {Object} dataView The data view to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned data view.\n */\nfunction cloneDataView(dataView, isDeep) {\n  var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;\n  return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);\n}\n\nexport default cloneDataView;\n","/** Used to match `RegExp` flags from their coerced string values. */\nvar reFlags = /\\w*$/;\n\n/**\n * Creates a clone of `regexp`.\n *\n * @private\n * @param {Object} regexp The regexp to clone.\n * @returns {Object} Returns the cloned regexp.\n */\nfunction cloneRegExp(regexp) {\n  var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));\n  result.lastIndex = regexp.lastIndex;\n  return result;\n}\n\nexport default cloneRegExp;\n","import Symbol from './_Symbol.js';\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = Symbol ? Symbol.prototype : undefined,\n    symbolValueOf = symbolProto ? symbolProto.valueOf : undefined;\n\n/**\n * Creates a clone of the `symbol` object.\n *\n * @private\n * @param {Object} symbol The symbol object to clone.\n * @returns {Object} Returns the cloned symbol object.\n */\nfunction cloneSymbol(symbol) {\n  return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};\n}\n\nexport default cloneSymbol;\n","import cloneArrayBuffer from './_cloneArrayBuffer.js';\n\n/**\n * Creates a clone of `typedArray`.\n *\n * @private\n * @param {Object} typedArray The typed array to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned typed array.\n */\nfunction cloneTypedArray(typedArray, isDeep) {\n  var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;\n  return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);\n}\n\nexport default cloneTypedArray;\n","import cloneArrayBuffer from './_cloneArrayBuffer.js';\nimport cloneDataView from './_cloneDataView.js';\nimport cloneRegExp from './_cloneRegExp.js';\nimport cloneSymbol from './_cloneSymbol.js';\nimport cloneTypedArray from './_cloneTypedArray.js';\n\n/** `Object#toString` result references. */\nvar boolTag = '[object Boolean]',\n    dateTag = '[object Date]',\n    mapTag = '[object Map]',\n    numberTag = '[object Number]',\n    regexpTag = '[object RegExp]',\n    setTag = '[object Set]',\n    stringTag = '[object String]',\n    symbolTag = '[object Symbol]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n    dataViewTag = '[object DataView]',\n    float32Tag = '[object Float32Array]',\n    float64Tag = '[object Float64Array]',\n    int8Tag = '[object Int8Array]',\n    int16Tag = '[object Int16Array]',\n    int32Tag = '[object Int32Array]',\n    uint8Tag = '[object Uint8Array]',\n    uint8ClampedTag = '[object Uint8ClampedArray]',\n    uint16Tag = '[object Uint16Array]',\n    uint32Tag = '[object Uint32Array]';\n\n/**\n * Initializes an object clone based on its `toStringTag`.\n *\n * **Note:** This function only supports cloning values with tags of\n * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.\n *\n * @private\n * @param {Object} object The object to clone.\n * @param {string} tag The `toStringTag` of the object to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the initialized clone.\n */\nfunction initCloneByTag(object, tag, isDeep) {\n  var Ctor = object.constructor;\n  switch (tag) {\n    case arrayBufferTag:\n      return cloneArrayBuffer(object);\n\n    case boolTag:\n    case dateTag:\n      return new Ctor(+object);\n\n    case dataViewTag:\n      return cloneDataView(object, isDeep);\n\n    case float32Tag: case float64Tag:\n    case int8Tag: case int16Tag: case int32Tag:\n    case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:\n      return cloneTypedArray(object, isDeep);\n\n    case mapTag:\n      return new Ctor;\n\n    case numberTag:\n    case stringTag:\n      return new Ctor(object);\n\n    case regexpTag:\n      return cloneRegExp(object);\n\n    case setTag:\n      return new Ctor;\n\n    case symbolTag:\n      return cloneSymbol(object);\n  }\n}\n\nexport default initCloneByTag;\n","import isObject from './isObject.js';\n\n/** Built-in value references. */\nvar objectCreate = Object.create;\n\n/**\n * The base implementation of `_.create` without support for assigning\n * properties to the created object.\n *\n * @private\n * @param {Object} proto The object to inherit from.\n * @returns {Object} Returns the new object.\n */\nvar baseCreate = (function() {\n  function object() {}\n  return function(proto) {\n    if (!isObject(proto)) {\n      return {};\n    }\n    if (objectCreate) {\n      return objectCreate(proto);\n    }\n    object.prototype = proto;\n    var result = new object;\n    object.prototype = undefined;\n    return result;\n  };\n}());\n\nexport default baseCreate;\n","import baseCreate from './_baseCreate.js';\nimport getPrototype from './_getPrototype.js';\nimport isPrototype from './_isPrototype.js';\n\n/**\n * Initializes an object clone.\n *\n * @private\n * @param {Object} object The object to clone.\n * @returns {Object} Returns the initialized clone.\n */\nfunction initCloneObject(object) {\n  return (typeof object.constructor == 'function' && !isPrototype(object))\n    ? baseCreate(getPrototype(object))\n    : {};\n}\n\nexport default initCloneObject;\n","import getTag from './_getTag.js';\nimport isObjectLike from './isObjectLike.js';\n\n/** `Object#toString` result references. */\nvar mapTag = '[object Map]';\n\n/**\n * The base implementation of `_.isMap` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n */\nfunction baseIsMap(value) {\n  return isObjectLike(value) && getTag(value) == mapTag;\n}\n\nexport default baseIsMap;\n","import baseIsMap from './_baseIsMap.js';\nimport baseUnary from './_baseUnary.js';\nimport nodeUtil from './_nodeUtil.js';\n\n/* Node.js helper references. */\nvar nodeIsMap = nodeUtil && nodeUtil.isMap;\n\n/**\n * Checks if `value` is classified as a `Map` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n * @example\n *\n * _.isMap(new Map);\n * // => true\n *\n * _.isMap(new WeakMap);\n * // => false\n */\nvar isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;\n\nexport default isMap;\n","import getTag from './_getTag.js';\nimport isObjectLike from './isObjectLike.js';\n\n/** `Object#toString` result references. */\nvar setTag = '[object Set]';\n\n/**\n * The base implementation of `_.isSet` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n */\nfunction baseIsSet(value) {\n  return isObjectLike(value) && getTag(value) == setTag;\n}\n\nexport default baseIsSet;\n","import baseIsSet from './_baseIsSet.js';\nimport baseUnary from './_baseUnary.js';\nimport nodeUtil from './_nodeUtil.js';\n\n/* Node.js helper references. */\nvar nodeIsSet = nodeUtil && nodeUtil.isSet;\n\n/**\n * Checks if `value` is classified as a `Set` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n * @example\n *\n * _.isSet(new Set);\n * // => true\n *\n * _.isSet(new WeakSet);\n * // => false\n */\nvar isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;\n\nexport default isSet;\n","import Stack from './_Stack.js';\nimport arrayEach from './_arrayEach.js';\nimport assignValue from './_assignValue.js';\nimport baseAssign from './_baseAssign.js';\nimport baseAssignIn from './_baseAssignIn.js';\nimport cloneBuffer from './_cloneBuffer.js';\nimport copyArray from './_copyArray.js';\nimport copySymbols from './_copySymbols.js';\nimport copySymbolsIn from './_copySymbolsIn.js';\nimport getAllKeys from './_getAllKeys.js';\nimport getAllKeysIn from './_getAllKeysIn.js';\nimport getTag from './_getTag.js';\nimport initCloneArray from './_initCloneArray.js';\nimport initCloneByTag from './_initCloneByTag.js';\nimport initCloneObject from './_initCloneObject.js';\nimport isArray from './isArray.js';\nimport isBuffer from './isBuffer.js';\nimport isMap from './isMap.js';\nimport isObject from './isObject.js';\nimport isSet from './isSet.js';\nimport keys from './keys.js';\nimport keysIn from './keysIn.js';\n\n/** Used to compose bitmasks for cloning. */\nvar CLONE_DEEP_FLAG = 1,\n    CLONE_FLAT_FLAG = 2,\n    CLONE_SYMBOLS_FLAG = 4;\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n    arrayTag = '[object Array]',\n    boolTag = '[object Boolean]',\n    dateTag = '[object Date]',\n    errorTag = '[object Error]',\n    funcTag = '[object Function]',\n    genTag = '[object GeneratorFunction]',\n    mapTag = '[object Map]',\n    numberTag = '[object Number]',\n    objectTag = '[object Object]',\n    regexpTag = '[object RegExp]',\n    setTag = '[object Set]',\n    stringTag = '[object String]',\n    symbolTag = '[object Symbol]',\n    weakMapTag = '[object WeakMap]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n    dataViewTag = '[object DataView]',\n    float32Tag = '[object Float32Array]',\n    float64Tag = '[object Float64Array]',\n    int8Tag = '[object Int8Array]',\n    int16Tag = '[object Int16Array]',\n    int32Tag = '[object Int32Array]',\n    uint8Tag = '[object Uint8Array]',\n    uint8ClampedTag = '[object Uint8ClampedArray]',\n    uint16Tag = '[object Uint16Array]',\n    uint32Tag = '[object Uint32Array]';\n\n/** Used to identify `toStringTag` values supported by `_.clone`. */\nvar cloneableTags = {};\ncloneableTags[argsTag] = cloneableTags[arrayTag] =\ncloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =\ncloneableTags[boolTag] = cloneableTags[dateTag] =\ncloneableTags[float32Tag] = cloneableTags[float64Tag] =\ncloneableTags[int8Tag] = cloneableTags[int16Tag] =\ncloneableTags[int32Tag] = cloneableTags[mapTag] =\ncloneableTags[numberTag] = cloneableTags[objectTag] =\ncloneableTags[regexpTag] = cloneableTags[setTag] =\ncloneableTags[stringTag] = cloneableTags[symbolTag] =\ncloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =\ncloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;\ncloneableTags[errorTag] = cloneableTags[funcTag] =\ncloneableTags[weakMapTag] = false;\n\n/**\n * The base implementation of `_.clone` and `_.cloneDeep` which tracks\n * traversed objects.\n *\n * @private\n * @param {*} value The value to clone.\n * @param {boolean} bitmask The bitmask flags.\n *  1 - Deep clone\n *  2 - Flatten inherited properties\n *  4 - Clone symbols\n * @param {Function} [customizer] The function to customize cloning.\n * @param {string} [key] The key of `value`.\n * @param {Object} [object] The parent object of `value`.\n * @param {Object} [stack] Tracks traversed objects and their clone counterparts.\n * @returns {*} Returns the cloned value.\n */\nfunction baseClone(value, bitmask, customizer, key, object, stack) {\n  var result,\n      isDeep = bitmask & CLONE_DEEP_FLAG,\n      isFlat = bitmask & CLONE_FLAT_FLAG,\n      isFull = bitmask & CLONE_SYMBOLS_FLAG;\n\n  if (customizer) {\n    result = object ? customizer(value, key, object, stack) : customizer(value);\n  }\n  if (result !== undefined) {\n    return result;\n  }\n  if (!isObject(value)) {\n    return value;\n  }\n  var isArr = isArray(value);\n  if (isArr) {\n    result = initCloneArray(value);\n    if (!isDeep) {\n      return copyArray(value, result);\n    }\n  } else {\n    var tag = getTag(value),\n        isFunc = tag == funcTag || tag == genTag;\n\n    if (isBuffer(value)) {\n      return cloneBuffer(value, isDeep);\n    }\n    if (tag == objectTag || tag == argsTag || (isFunc && !object)) {\n      result = (isFlat || isFunc) ? {} : initCloneObject(value);\n      if (!isDeep) {\n        return isFlat\n          ? copySymbolsIn(value, baseAssignIn(result, value))\n          : copySymbols(value, baseAssign(result, value));\n      }\n    } else {\n      if (!cloneableTags[tag]) {\n        return object ? value : {};\n      }\n      result = initCloneByTag(value, tag, isDeep);\n    }\n  }\n  // Check for circular references and return its corresponding clone.\n  stack || (stack = new Stack);\n  var stacked = stack.get(value);\n  if (stacked) {\n    return stacked;\n  }\n  stack.set(value, result);\n\n  if (isSet(value)) {\n    value.forEach(function(subValue) {\n      result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));\n    });\n  } else if (isMap(value)) {\n    value.forEach(function(subValue, key) {\n      result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));\n    });\n  }\n\n  var keysFunc = isFull\n    ? (isFlat ? getAllKeysIn : getAllKeys)\n    : (isFlat ? keysIn : keys);\n\n  var props = isArr ? undefined : keysFunc(value);\n  arrayEach(props || value, function(subValue, key) {\n    if (props) {\n      key = subValue;\n      subValue = value[key];\n    }\n    // Recursively populate clone (susceptible to call stack limits).\n    assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));\n  });\n  return result;\n}\n\nexport default baseClone;\n","import baseClone from './_baseClone.js';\n\n/** Used to compose bitmasks for cloning. */\nvar CLONE_SYMBOLS_FLAG = 4;\n\n/**\n * Creates a shallow clone of `value`.\n *\n * **Note:** This method is loosely based on the\n * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)\n * and supports cloning arrays, array buffers, booleans, date objects, maps,\n * numbers, `Object` objects, regexes, sets, strings, symbols, and typed\n * arrays. The own enumerable properties of `arguments` objects are cloned\n * as plain objects. An empty object is returned for uncloneable values such\n * as error objects, functions, DOM nodes, and WeakMaps.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to clone.\n * @returns {*} Returns the cloned value.\n * @see _.cloneDeep\n * @example\n *\n * var objects = [{ 'a': 1 }, { 'b': 2 }];\n *\n * var shallow = _.clone(objects);\n * console.log(shallow[0] === objects[0]);\n * // => true\n */\nfunction clone(value) {\n  return baseClone(value, CLONE_SYMBOLS_FLAG);\n}\n\nexport default clone;\n","/**\n * A specialized version of `_.map` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n */\nfunction arrayMap(array, iteratee) {\n  var index = -1,\n      length = array == null ? 0 : array.length,\n      result = Array(length);\n\n  while (++index < length) {\n    result[index] = iteratee(array[index], index, array);\n  }\n  return result;\n}\n\nexport default arrayMap;\n","import baseGetTag from './_baseGetTag.js';\nimport isObjectLike from './isObjectLike.js';\n\n/** `Object#toString` result references. */\nvar symbolTag = '[object Symbol]';\n\n/**\n * Checks if `value` is classified as a `Symbol` primitive or object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n * @example\n *\n * _.isSymbol(Symbol.iterator);\n * // => true\n *\n * _.isSymbol('abc');\n * // => false\n */\nfunction isSymbol(value) {\n  return typeof value == 'symbol' ||\n    (isObjectLike(value) && baseGetTag(value) == symbolTag);\n}\n\nexport default isSymbol;\n","import MapCache from './_MapCache.js';\n\n/** Error message constants. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/**\n * Creates a function that memoizes the result of `func`. If `resolver` is\n * provided, it determines the cache key for storing the result based on the\n * arguments provided to the memoized function. By default, the first argument\n * provided to the memoized function is used as the map cache key. The `func`\n * is invoked with the `this` binding of the memoized function.\n *\n * **Note:** The cache is exposed as the `cache` property on the memoized\n * function. Its creation may be customized by replacing the `_.memoize.Cache`\n * constructor with one whose instances implement the\n * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)\n * method interface of `clear`, `delete`, `get`, `has`, and `set`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to have its output memoized.\n * @param {Function} [resolver] The function to resolve the cache key.\n * @returns {Function} Returns the new memoized function.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n * var other = { 'c': 3, 'd': 4 };\n *\n * var values = _.memoize(_.values);\n * values(object);\n * // => [1, 2]\n *\n * values(other);\n * // => [3, 4]\n *\n * object.a = 2;\n * values(object);\n * // => [1, 2]\n *\n * // Modify the result cache.\n * values.cache.set(object, ['a', 'b']);\n * values(object);\n * // => ['a', 'b']\n *\n * // Replace `_.memoize.Cache`.\n * _.memoize.Cache = WeakMap;\n */\nfunction memoize(func, resolver) {\n  if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  var memoized = function() {\n    var args = arguments,\n        key = resolver ? resolver.apply(this, args) : args[0],\n        cache = memoized.cache;\n\n    if (cache.has(key)) {\n      return cache.get(key);\n    }\n    var result = func.apply(this, args);\n    memoized.cache = cache.set(key, result) || cache;\n    return result;\n  };\n  memoized.cache = new (memoize.Cache || MapCache);\n  return memoized;\n}\n\n// Expose `MapCache`.\nmemoize.Cache = MapCache;\n\nexport default memoize;\n","import memoize from './memoize.js';\n\n/** Used as the maximum memoize cache size. */\nvar MAX_MEMOIZE_SIZE = 500;\n\n/**\n * A specialized version of `_.memoize` which clears the memoized function's\n * cache when it exceeds `MAX_MEMOIZE_SIZE`.\n *\n * @private\n * @param {Function} func The function to have its output memoized.\n * @returns {Function} Returns the new memoized function.\n */\nfunction memoizeCapped(func) {\n  var result = memoize(func, function(key) {\n    if (cache.size === MAX_MEMOIZE_SIZE) {\n      cache.clear();\n    }\n    return key;\n  });\n\n  var cache = result.cache;\n  return result;\n}\n\nexport default memoizeCapped;\n","import memoizeCapped from './_memoizeCapped.js';\n\n/** Used to match property names within property paths. */\nvar rePropName = /[^.[\\]]+|\\[(?:(-?\\d+(?:\\.\\d+)?)|([\"'])((?:(?!\\2)[^\\\\]|\\\\.)*?)\\2)\\]|(?=(?:\\.|\\[\\])(?:\\.|\\[\\]|$))/g;\n\n/** Used to match backslashes in property paths. */\nvar reEscapeChar = /\\\\(\\\\)?/g;\n\n/**\n * Converts `string` to a property path array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the property path array.\n */\nvar stringToPath = memoizeCapped(function(string) {\n  var result = [];\n  if (string.charCodeAt(0) === 46 /* . */) {\n    result.push('');\n  }\n  string.replace(rePropName, function(match, number, quote, subString) {\n    result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));\n  });\n  return result;\n});\n\nexport default stringToPath;\n","import isSymbol from './isSymbol.js';\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0;\n\n/**\n * Converts `value` to a string key if it's not a string or symbol.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {string|symbol} Returns the key.\n */\nfunction toKey(value) {\n  if (typeof value == 'string' || isSymbol(value)) {\n    return value;\n  }\n  var result = (value + '');\n  return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n}\n\nexport default toKey;\n","import Symbol from './_Symbol.js';\nimport arrayMap from './_arrayMap.js';\nimport isArray from './isArray.js';\nimport isSymbol from './isSymbol.js';\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0;\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = Symbol ? Symbol.prototype : undefined,\n    symbolToString = symbolProto ? symbolProto.toString : undefined;\n\n/**\n * The base implementation of `_.toString` which doesn't convert nullish\n * values to empty strings.\n *\n * @private\n * @param {*} value The value to process.\n * @returns {string} Returns the string.\n */\nfunction baseToString(value) {\n  // Exit early for strings to avoid a performance hit in some environments.\n  if (typeof value == 'string') {\n    return value;\n  }\n  if (isArray(value)) {\n    // Recursively convert values (susceptible to call stack limits).\n    return arrayMap(value, baseToString) + '';\n  }\n  if (isSymbol(value)) {\n    return symbolToString ? symbolToString.call(value) : '';\n  }\n  var result = (value + '');\n  return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n}\n\nexport default baseToString;\n","import baseToString from './_baseToString.js';\n\n/**\n * Converts `value` to a string. An empty string is returned for `null`\n * and `undefined` values. The sign of `-0` is preserved.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {string} Returns the converted string.\n * @example\n *\n * _.toString(null);\n * // => ''\n *\n * _.toString(-0);\n * // => '-0'\n *\n * _.toString([1, 2, 3]);\n * // => '1,2,3'\n */\nfunction toString(value) {\n  return value == null ? '' : baseToString(value);\n}\n\nexport default toString;\n","import arrayMap from './_arrayMap.js';\nimport copyArray from './_copyArray.js';\nimport isArray from './isArray.js';\nimport isSymbol from './isSymbol.js';\nimport stringToPath from './_stringToPath.js';\nimport toKey from './_toKey.js';\nimport toString from './toString.js';\n\n/**\n * Converts `value` to a property path array.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Util\n * @param {*} value The value to convert.\n * @returns {Array} Returns the new property path array.\n * @example\n *\n * _.toPath('a.b.c');\n * // => ['a', 'b', 'c']\n *\n * _.toPath('a[0].b.c');\n * // => ['a', '0', 'b', 'c']\n */\nfunction toPath(value) {\n  if (isArray(value)) {\n    return arrayMap(value, toKey);\n  }\n  return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value)));\n}\n\nexport default toPath;\n","import baseClone from './_baseClone.js';\n\n/** Used to compose bitmasks for cloning. */\nvar CLONE_DEEP_FLAG = 1,\n    CLONE_SYMBOLS_FLAG = 4;\n\n/**\n * This method is like `_.clone` except that it recursively clones `value`.\n *\n * @static\n * @memberOf _\n * @since 1.0.0\n * @category Lang\n * @param {*} value The value to recursively clone.\n * @returns {*} Returns the deep cloned value.\n * @see _.clone\n * @example\n *\n * var objects = [{ 'a': 1 }, { 'b': 2 }];\n *\n * var deep = _.cloneDeep(objects);\n * console.log(deep[0] === objects[0]);\n * // => false\n */\nfunction cloneDeep(value) {\n  return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);\n}\n\nexport default cloneDeep;\n","import clone from 'lodash/clone';\nimport toPath from 'lodash/toPath';\nimport * as React from 'react';\n\n// Assertions\n\n/** @private is the value an empty array? */\nexport const isEmptyArray = (value?: any) =>\n  Array.isArray(value) && value.length === 0;\n\n/** @private is the given object a Function? */\nexport const isFunction = (obj: any): obj is Function =>\n  typeof obj === 'function';\n\n/** @private is the given object an Object? */\nexport const isObject = (obj: any): obj is Object =>\n  obj !== null && typeof obj === 'object';\n\n/** @private is the given object an integer? */\nexport const isInteger = (obj: any): boolean =>\n  String(Math.floor(Number(obj))) === obj;\n\n/** @private is the given object a string? */\nexport const isString = (obj: any): obj is string =>\n  Object.prototype.toString.call(obj) === '[object String]';\n\n/** @private is the given object a NaN? */\n// eslint-disable-next-line no-self-compare\nexport const isNaN = (obj: any): boolean => obj !== obj;\n\n/** @private Does a React component have exactly 0 children? */\nexport const isEmptyChildren = (children: any): boolean =>\n  React.Children.count(children) === 0;\n\n/** @private is the given object/value a promise? */\nexport const isPromise = (value: any): value is PromiseLike<any> =>\n  isObject(value) && isFunction(value.then);\n\n/** @private is the given object/value a type of synthetic event? */\nexport const isInputEvent = (value: any): value is React.SyntheticEvent<any> =>\n  value && isObject(value) && isObject(value.target);\n\n/**\n * Same as document.activeElement but wraps in a try-catch block. In IE it is\n * not safe to call document.activeElement if there is nothing focused.\n *\n * The activeElement will be null only if the document or document body is not\n * yet defined.\n *\n * @param {?Document} doc Defaults to current document.\n * @return {Element | null}\n * @see https://github.com/facebook/fbjs/blob/master/packages/fbjs/src/core/dom/getActiveElement.js\n */\nexport function getActiveElement(doc?: Document): Element | null {\n  doc = doc || (typeof document !== 'undefined' ? document : undefined);\n  if (typeof doc === 'undefined') {\n    return null;\n  }\n  try {\n    return doc.activeElement || doc.body;\n  } catch (e) {\n    return doc.body;\n  }\n}\n\n/**\n * Deeply get a value from an object via its path.\n */\nexport function getIn(\n  obj: any,\n  key: string | string[],\n  def?: any,\n  p: number = 0\n) {\n  const path = toPath(key);\n  while (obj && p < path.length) {\n    obj = obj[path[p++]];\n  }\n  return obj === undefined ? def : obj;\n}\n\n/**\n * Deeply set a value from in object via it's path. If the value at `path`\n * has changed, return a shallow copy of obj with `value` set at `path`.\n * If `value` has not changed, return the original `obj`.\n *\n * Existing objects / arrays along `path` are also shallow copied. Sibling\n * objects along path retain the same internal js reference. Since new\n * objects / arrays are only created along `path`, we can test if anything\n * changed in a nested structure by comparing the object's reference in\n * the old and new object, similar to how russian doll cache invalidation\n * works.\n *\n * In earlier versions of this function, which used cloneDeep, there were\n * issues whereby settings a nested value would mutate the parent\n * instead of creating a new object. `clone` avoids that bug making a\n * shallow copy of the objects along the update path\n * so no object is mutated in place.\n *\n * Before changing this function, please read through the following\n * discussions.\n *\n * @see https://github.com/developit/linkstate\n * @see https://github.com/jaredpalmer/formik/pull/123\n */\nexport function setIn(obj: any, path: string, value: any): any {\n  let res: any = clone(obj); // this keeps inheritance when obj is a class\n  let resVal: any = res;\n  let i = 0;\n  let pathArray = toPath(path);\n\n  for (; i < pathArray.length - 1; i++) {\n    const currentPath: string = pathArray[i];\n    let currentObj: any = getIn(obj, pathArray.slice(0, i + 1));\n\n    if (currentObj && (isObject(currentObj) || Array.isArray(currentObj))) {\n      resVal = resVal[currentPath] = clone(currentObj);\n    } else {\n      const nextPath: string = pathArray[i + 1];\n      resVal = resVal[currentPath] =\n        isInteger(nextPath) && Number(nextPath) >= 0 ? [] : {};\n    }\n  }\n\n  // Return original object if new value is the same as current\n  if ((i === 0 ? obj : resVal)[pathArray[i]] === value) {\n    return obj;\n  }\n\n  if (value === undefined) {\n    delete resVal[pathArray[i]];\n  } else {\n    resVal[pathArray[i]] = value;\n  }\n\n  // If the path array has a single element, the loop did not run.\n  // Deleting on `resVal` had no effect in this scenario, so we delete on the result instead.\n  if (i === 0 && value === undefined) {\n    delete res[pathArray[i]];\n  }\n\n  return res;\n}\n\n/**\n * Recursively a set the same value for all keys and arrays nested object, cloning\n * @param object\n * @param value\n * @param visited\n * @param response\n */\nexport function setNestedObjectValues<T>(\n  object: any,\n  value: any,\n  visited: any = new WeakMap(),\n  response: any = {}\n): T {\n  for (let k of Object.keys(object)) {\n    const val = object[k];\n    if (isObject(val)) {\n      if (!visited.get(val)) {\n        visited.set(val, true);\n        // In order to keep array values consistent for both dot path  and\n        // bracket syntax, we need to check if this is an array so that\n        // this will output  { friends: [true] } and not { friends: { \"0\": true } }\n        response[k] = Array.isArray(val) ? [] : {};\n        setNestedObjectValues(val, value, visited, response[k]);\n      }\n    } else {\n      response[k] = value;\n    }\n  }\n\n  return response;\n}\n","import * as React from 'react';\nimport { FormikContextType } from './types';\nimport invariant from 'tiny-warning';\n\nexport const FormikContext = React.createContext<FormikContextType<any>>(\n  undefined as any\n);\nexport const FormikProvider = FormikContext.Provider;\nexport const FormikConsumer = FormikContext.Consumer;\n\nexport function useFormikContext<Values>() {\n  const formik = React.useContext<FormikContextType<Values>>(FormikContext);\n\n  invariant(\n    !!formik,\n    `Formik context is undefined, please verify you are calling useFormikContext() as child of a <Formik> component.`\n  );\n\n  return formik;\n}\n","import * as React from 'react';\nimport isEqual from 'react-fast-compare';\nimport deepmerge from 'deepmerge';\nimport isPlainObject from 'lodash/isPlainObject';\nimport {\n  FormikConfig,\n  FormikErrors,\n  FormikState,\n  FormikTouched,\n  FormikValues,\n  FormikProps,\n  FieldMetaProps,\n  FieldHelperProps,\n  FieldInputProps,\n  FormikHelpers,\n  FormikHandlers,\n} from './types';\nimport {\n  isFunction,\n  isString,\n  setIn,\n  isEmptyChildren,\n  isPromise,\n  setNestedObjectValues,\n  getActiveElement,\n  getIn,\n  isObject,\n} from './utils';\nimport { FormikProvider } from './FormikContext';\nimport invariant from 'tiny-warning';\n\ntype FormikMessage<Values> =\n  | { type: 'SUBMIT_ATTEMPT' }\n  | { type: 'SUBMIT_FAILURE' }\n  | { type: 'SUBMIT_SUCCESS' }\n  | { type: 'SET_ISVALIDATING'; payload: boolean }\n  | { type: 'SET_ISSUBMITTING'; payload: boolean }\n  | { type: 'SET_VALUES'; payload: Values }\n  | { type: 'SET_FIELD_VALUE'; payload: { field: string; value?: any } }\n  | { type: 'SET_FIELD_TOUCHED'; payload: { field: string; value?: boolean } }\n  | { type: 'SET_FIELD_ERROR'; payload: { field: string; value?: string } }\n  | { type: 'SET_TOUCHED'; payload: FormikTouched<Values> }\n  | { type: 'SET_ERRORS'; payload: FormikErrors<Values> }\n  | { type: 'SET_STATUS'; payload: any }\n  | {\n      type: 'SET_FORMIK_STATE';\n      payload: (s: FormikState<Values>) => FormikState<Values>;\n    }\n  | {\n      type: 'RESET_FORM';\n      payload: FormikState<Values>;\n    };\n\n// State reducer\nfunction formikReducer<Values>(\n  state: FormikState<Values>,\n  msg: FormikMessage<Values>\n) {\n  switch (msg.type) {\n    case 'SET_VALUES':\n      return { ...state, values: msg.payload };\n    case 'SET_TOUCHED':\n      return { ...state, touched: msg.payload };\n    case 'SET_ERRORS':\n      if (isEqual(state.errors, msg.payload)) {\n        return state;\n      }\n\n      return { ...state, errors: msg.payload };\n    case 'SET_STATUS':\n      return { ...state, status: msg.payload };\n    case 'SET_ISSUBMITTING':\n      return { ...state, isSubmitting: msg.payload };\n    case 'SET_ISVALIDATING':\n      return { ...state, isValidating: msg.payload };\n    case 'SET_FIELD_VALUE':\n      return {\n        ...state,\n        values: setIn(state.values, msg.payload.field, msg.payload.value),\n      };\n    case 'SET_FIELD_TOUCHED':\n      return {\n        ...state,\n        touched: setIn(state.touched, msg.payload.field, msg.payload.value),\n      };\n    case 'SET_FIELD_ERROR':\n      return {\n        ...state,\n        errors: setIn(state.errors, msg.payload.field, msg.payload.value),\n      };\n    case 'RESET_FORM':\n      return { ...state, ...msg.payload };\n    case 'SET_FORMIK_STATE':\n      return msg.payload(state);\n    case 'SUBMIT_ATTEMPT':\n      return {\n        ...state,\n        touched: setNestedObjectValues<FormikTouched<Values>>(\n          state.values,\n          true\n        ),\n        isSubmitting: true,\n        submitCount: state.submitCount + 1,\n      };\n    case 'SUBMIT_FAILURE':\n      return {\n        ...state,\n        isSubmitting: false,\n      };\n    case 'SUBMIT_SUCCESS':\n      return {\n        ...state,\n        isSubmitting: false,\n      };\n    default:\n      return state;\n  }\n}\n\n// Initial empty states // objects\nconst emptyErrors: FormikErrors<unknown> = {};\nconst emptyTouched: FormikTouched<unknown> = {};\n\n// This is an object that contains a map of all registered fields\n// and their validate functions\ninterface FieldRegistry {\n  [field: string]: {\n    validate: (value: any) => string | Promise<string> | undefined;\n  };\n}\n\nexport function useFormik<Values extends FormikValues = FormikValues>({\n  validateOnChange = true,\n  validateOnBlur = true,\n  validateOnMount = false,\n  isInitialValid,\n  enableReinitialize = false,\n  onSubmit,\n  ...rest\n}: FormikConfig<Values>) {\n  const props = {\n    validateOnChange,\n    validateOnBlur,\n    validateOnMount,\n    onSubmit,\n    ...rest,\n  };\n  const initialValues = React.useRef(props.initialValues);\n  const initialErrors = React.useRef(props.initialErrors || emptyErrors);\n  const initialTouched = React.useRef(props.initialTouched || emptyTouched);\n  const initialStatus = React.useRef(props.initialStatus);\n  const isMounted = React.useRef<boolean>(false);\n  const fieldRegistry = React.useRef<FieldRegistry>({});\n  if (__DEV__) {\n    // eslint-disable-next-line react-hooks/rules-of-hooks\n    React.useEffect(() => {\n      invariant(\n        typeof isInitialValid === 'undefined',\n        'isInitialValid has been deprecated and will be removed in future versions of Formik. Please use initialErrors or validateOnMount instead.'\n      );\n      // eslint-disable-next-line\n    }, []);\n  }\n\n  React.useEffect(() => {\n    isMounted.current = true;\n\n    return () => {\n      isMounted.current = false;\n    };\n  }, []);\n\n  const [state, dispatch] = React.useReducer<\n    React.Reducer<FormikState<Values>, FormikMessage<Values>>\n  >(formikReducer, {\n    values: props.initialValues,\n    errors: props.initialErrors || emptyErrors,\n    touched: props.initialTouched || emptyTouched,\n    status: props.initialStatus,\n    isSubmitting: false,\n    isValidating: false,\n    submitCount: 0,\n  });\n\n  const runValidateHandler = React.useCallback(\n    (values: Values, field?: string): Promise<FormikErrors<Values>> => {\n      return new Promise((resolve, reject) => {\n        const maybePromisedErrors = (props.validate as any)(values, field);\n        if (maybePromisedErrors == null) {\n          // use loose null check here on purpose\n          resolve(emptyErrors);\n        } else if (isPromise(maybePromisedErrors)) {\n          (maybePromisedErrors as Promise<any>).then(\n            errors => {\n              resolve(errors || emptyErrors);\n            },\n            actualException => {\n              if (process.env.NODE_ENV !== 'production') {\n                console.warn(\n                  `Warning: An unhandled error was caught during validation in <Formik validate />`,\n                  actualException\n                );\n              }\n\n              reject(actualException);\n            }\n          );\n        } else {\n          resolve(maybePromisedErrors);\n        }\n      });\n    },\n    [props.validate]\n  );\n\n  /**\n   * Run validation against a Yup schema and optionally run a function if successful\n   */\n  const runValidationSchema = React.useCallback(\n    (values: Values, field?: string): Promise<FormikErrors<Values>> => {\n      const validationSchema = props.validationSchema;\n      const schema = isFunction(validationSchema)\n        ? validationSchema(field)\n        : validationSchema;\n      const promise =\n        field && schema.validateAt\n          ? schema.validateAt(field, values)\n          : validateYupSchema(values, schema);\n      return new Promise((resolve, reject) => {\n        promise.then(\n          () => {\n            resolve(emptyErrors);\n          },\n          (err: any) => {\n            // Yup will throw a validation error if validation fails. We catch those and\n            // resolve them into Formik errors. We can sniff if something is a Yup error\n            // by checking error.name.\n            // @see https://github.com/jquense/yup#validationerrorerrors-string--arraystring-value-any-path-string\n            if (err.name === 'ValidationError') {\n              resolve(yupToFormErrors(err));\n            } else {\n              // We throw any other errors\n              if (process.env.NODE_ENV !== 'production') {\n                console.warn(\n                  `Warning: An unhandled error was caught during validation in <Formik validationSchema />`,\n                  err\n                );\n              }\n\n              reject(err);\n            }\n          }\n        );\n      });\n    },\n    [props.validationSchema]\n  );\n\n  const runSingleFieldLevelValidation = React.useCallback(\n    (field: string, value: void | string): Promise<string> => {\n      return new Promise(resolve =>\n        resolve(fieldRegistry.current[field].validate(value) as string)\n      );\n    },\n    []\n  );\n\n  const runFieldLevelValidations = React.useCallback(\n    (values: Values): Promise<FormikErrors<Values>> => {\n      const fieldKeysWithValidation: string[] = Object.keys(\n        fieldRegistry.current\n      ).filter(f => isFunction(fieldRegistry.current[f].validate));\n\n      // Construct an array with all of the field validation functions\n      const fieldValidations: Promise<string>[] =\n        fieldKeysWithValidation.length > 0\n          ? fieldKeysWithValidation.map(f =>\n              runSingleFieldLevelValidation(f, getIn(values, f))\n            )\n          : [Promise.resolve('DO_NOT_DELETE_YOU_WILL_BE_FIRED')]; // use special case ;)\n\n      return Promise.all(fieldValidations).then((fieldErrorsList: string[]) =>\n        fieldErrorsList.reduce((prev, curr, index) => {\n          if (curr === 'DO_NOT_DELETE_YOU_WILL_BE_FIRED') {\n            return prev;\n          }\n          if (curr) {\n            prev = setIn(prev, fieldKeysWithValidation[index], curr);\n          }\n          return prev;\n        }, {})\n      );\n    },\n    [runSingleFieldLevelValidation]\n  );\n\n  // Run all validations and return the result\n  const runAllValidations = React.useCallback(\n    (values: Values) => {\n      return Promise.all([\n        runFieldLevelValidations(values),\n        props.validationSchema ? runValidationSchema(values) : {},\n        props.validate ? runValidateHandler(values) : {},\n      ]).then(([fieldErrors, schemaErrors, validateErrors]) => {\n        const combinedErrors = deepmerge.all<FormikErrors<Values>>(\n          [fieldErrors, schemaErrors, validateErrors],\n          { arrayMerge }\n        );\n        return combinedErrors;\n      });\n    },\n    [\n      props.validate,\n      props.validationSchema,\n      runFieldLevelValidations,\n      runValidateHandler,\n      runValidationSchema,\n    ]\n  );\n\n  // Run all validations methods and update state accordingly\n  const validateFormWithHighPriority = useEventCallback(\n    (values: Values = state.values) => {\n      dispatch({ type: 'SET_ISVALIDATING', payload: true });\n      return runAllValidations(values).then(combinedErrors => {\n        if (!!isMounted.current) {\n          dispatch({ type: 'SET_ISVALIDATING', payload: false });\n          if (!isEqual(state.errors, combinedErrors)) {\n            dispatch({ type: 'SET_ERRORS', payload: combinedErrors });\n          }\n        }\n        return combinedErrors;\n      });\n    }\n  );\n\n  React.useEffect(() => {\n    if (\n      validateOnMount &&\n      isMounted.current === true &&\n      isEqual(initialValues.current, props.initialValues)\n    ) {\n      validateFormWithHighPriority(initialValues.current);\n    }\n  }, [validateOnMount, validateFormWithHighPriority]);\n\n  const resetForm = React.useCallback(\n    (nextState?: Partial<FormikState<Values>>) => {\n      const values =\n        nextState && nextState.values\n          ? nextState.values\n          : initialValues.current;\n      const errors =\n        nextState && nextState.errors\n          ? nextState.errors\n          : initialErrors.current\n          ? initialErrors.current\n          : props.initialErrors || {};\n      const touched =\n        nextState && nextState.touched\n          ? nextState.touched\n          : initialTouched.current\n          ? initialTouched.current\n          : props.initialTouched || {};\n      const status =\n        nextState && nextState.status\n          ? nextState.status\n          : initialStatus.current\n          ? initialStatus.current\n          : props.initialStatus;\n      initialValues.current = values;\n      initialErrors.current = errors;\n      initialTouched.current = touched;\n      initialStatus.current = status;\n\n      const dispatchFn = () => {\n        dispatch({\n          type: 'RESET_FORM',\n          payload: {\n            isSubmitting: !!nextState && !!nextState.isSubmitting,\n            errors,\n            touched,\n            status,\n            values,\n            isValidating: !!nextState && !!nextState.isValidating,\n            submitCount:\n              !!nextState &&\n              !!nextState.submitCount &&\n              typeof nextState.submitCount === 'number'\n                ? nextState.submitCount\n                : 0,\n          },\n        });\n      };\n\n      if (props.onReset) {\n        const maybePromisedOnReset = (props.onReset as any)(\n          state.values,\n          imperativeMethods\n        );\n\n        if (isPromise(maybePromisedOnReset)) {\n          (maybePromisedOnReset as Promise<any>).then(dispatchFn);\n        } else {\n          dispatchFn();\n        }\n      } else {\n        dispatchFn();\n      }\n    },\n    [props.initialErrors, props.initialStatus, props.initialTouched]\n  );\n\n  React.useEffect(() => {\n    if (\n      isMounted.current === true &&\n      !isEqual(initialValues.current, props.initialValues)\n    ) {\n      if (enableReinitialize) {\n        initialValues.current = props.initialValues;\n        resetForm();\n      }\n\n      if (validateOnMount) {\n        validateFormWithHighPriority(initialValues.current);\n      }\n    }\n  }, [\n    enableReinitialize,\n    props.initialValues,\n    resetForm,\n    validateOnMount,\n    validateFormWithHighPriority,\n  ]);\n\n  React.useEffect(() => {\n    if (\n      enableReinitialize &&\n      isMounted.current === true &&\n      !isEqual(initialErrors.current, props.initialErrors)\n    ) {\n      initialErrors.current = props.initialErrors || emptyErrors;\n      dispatch({\n        type: 'SET_ERRORS',\n        payload: props.initialErrors || emptyErrors,\n      });\n    }\n  }, [enableReinitialize, props.initialErrors]);\n\n  React.useEffect(() => {\n    if (\n      enableReinitialize &&\n      isMounted.current === true &&\n      !isEqual(initialTouched.current, props.initialTouched)\n    ) {\n      initialTouched.current = props.initialTouched || emptyTouched;\n      dispatch({\n        type: 'SET_TOUCHED',\n        payload: props.initialTouched || emptyTouched,\n      });\n    }\n  }, [enableReinitialize, props.initialTouched]);\n\n  React.useEffect(() => {\n    if (\n      enableReinitialize &&\n      isMounted.current === true &&\n      !isEqual(initialStatus.current, props.initialStatus)\n    ) {\n      initialStatus.current = props.initialStatus;\n      dispatch({\n        type: 'SET_STATUS',\n        payload: props.initialStatus,\n      });\n    }\n  }, [enableReinitialize, props.initialStatus, props.initialTouched]);\n\n  const validateField = useEventCallback((name: string) => {\n    // This will efficiently validate a single field by avoiding state\n    // changes if the validation function is synchronous. It's different from\n    // what is called when using validateForm.\n\n    if (\n      fieldRegistry.current[name] &&\n      isFunction(fieldRegistry.current[name].validate)\n    ) {\n      const value = getIn(state.values, name);\n      const maybePromise = fieldRegistry.current[name].validate(value);\n      if (isPromise(maybePromise)) {\n        // Only flip isValidating if the function is async.\n        dispatch({ type: 'SET_ISVALIDATING', payload: true });\n        return maybePromise\n          .then((x: any) => x)\n          .then((error: string) => {\n            dispatch({\n              type: 'SET_FIELD_ERROR',\n              payload: { field: name, value: error },\n            });\n            dispatch({ type: 'SET_ISVALIDATING', payload: false });\n          });\n      } else {\n        dispatch({\n          type: 'SET_FIELD_ERROR',\n          payload: {\n            field: name,\n            value: maybePromise as string | undefined,\n          },\n        });\n        return Promise.resolve(maybePromise as string | undefined);\n      }\n    } else if (props.validationSchema) {\n      dispatch({ type: 'SET_ISVALIDATING', payload: true });\n      return runValidationSchema(state.values, name)\n        .then((x: any) => x)\n        .then((error: any) => {\n          dispatch({\n            type: 'SET_FIELD_ERROR',\n            payload: { field: name, value: error[name] },\n          });\n          dispatch({ type: 'SET_ISVALIDATING', payload: false });\n        });\n    }\n\n    return Promise.resolve();\n  });\n\n  const registerField = React.useCallback((name: string, { validate }: any) => {\n    fieldRegistry.current[name] = {\n      validate,\n    };\n  }, []);\n\n  const unregisterField = React.useCallback((name: string) => {\n    delete fieldRegistry.current[name];\n  }, []);\n\n  const setTouched = useEventCallback(\n    (touched: FormikTouched<Values>, shouldValidate?: boolean) => {\n      dispatch({ type: 'SET_TOUCHED', payload: touched });\n      const willValidate =\n        shouldValidate === undefined ? validateOnBlur : shouldValidate;\n      return willValidate\n        ? validateFormWithHighPriority(state.values)\n        : Promise.resolve();\n    }\n  );\n\n  const setErrors = React.useCallback((errors: FormikErrors<Values>) => {\n    dispatch({ type: 'SET_ERRORS', payload: errors });\n  }, []);\n\n  const setValues = useEventCallback(\n    (values: React.SetStateAction<Values>, shouldValidate?: boolean) => {\n      const resolvedValues = isFunction(values) ? values(state.values) : values;\n\n      dispatch({ type: 'SET_VALUES', payload: resolvedValues });\n      const willValidate =\n        shouldValidate === undefined ? validateOnChange : shouldValidate;\n      return willValidate\n        ? validateFormWithHighPriority(resolvedValues)\n        : Promise.resolve();\n    }\n  );\n\n  const setFieldError = React.useCallback(\n    (field: string, value: string | undefined) => {\n      dispatch({\n        type: 'SET_FIELD_ERROR',\n        payload: { field, value },\n      });\n    },\n    []\n  );\n\n  const setFieldValue = useEventCallback(\n    (field: string, value: any, shouldValidate?: boolean) => {\n      dispatch({\n        type: 'SET_FIELD_VALUE',\n        payload: {\n          field,\n          value,\n        },\n      });\n      const willValidate =\n        shouldValidate === undefined ? validateOnChange : shouldValidate;\n      return willValidate\n        ? validateFormWithHighPriority(setIn(state.values, field, value))\n        : Promise.resolve();\n    }\n  );\n\n  const executeChange = React.useCallback(\n    (eventOrTextValue: string | React.ChangeEvent<any>, maybePath?: string) => {\n      // By default, assume that the first argument is a string. This allows us to use\n      // handleChange with React Native and React Native Web's onChangeText prop which\n      // provides just the value of the input.\n      let field = maybePath;\n      let val = eventOrTextValue;\n      let parsed;\n      // If the first argument is not a string though, it has to be a synthetic React Event (or a fake one),\n      // so we handle like we would a normal HTML change event.\n      if (!isString(eventOrTextValue)) {\n        // If we can, persist the event\n        // @see https://reactjs.org/docs/events.html#event-pooling\n        if ((eventOrTextValue as any).persist) {\n          (eventOrTextValue as React.ChangeEvent<any>).persist();\n        }\n        const target = eventOrTextValue.target\n          ? (eventOrTextValue as React.ChangeEvent<any>).target\n          : (eventOrTextValue as React.ChangeEvent<any>).currentTarget;\n\n        const {\n          type,\n          name,\n          id,\n          value,\n          checked,\n          outerHTML,\n          options,\n          multiple,\n        } = target;\n\n        field = maybePath ? maybePath : name ? name : id;\n        if (!field && __DEV__) {\n          warnAboutMissingIdentifier({\n            htmlContent: outerHTML,\n            documentationAnchorLink: 'handlechange-e-reactchangeeventany--void',\n            handlerName: 'handleChange',\n          });\n        }\n        val = /number|range/.test(type)\n          ? ((parsed = parseFloat(value)), isNaN(parsed) ? '' : parsed)\n          : /checkbox/.test(type) // checkboxes\n          ? getValueForCheckbox(getIn(state.values, field!), checked, value)\n          : !!multiple // <select multiple>\n          ? getSelectedValues(options)\n          : value;\n      }\n\n      if (field) {\n        // Set form fields by name\n        setFieldValue(field, val);\n      }\n    },\n    [setFieldValue, state.values]\n  );\n\n  const handleChange = useEventCallback<FormikHandlers['handleChange']>(\n    (\n      eventOrPath: string | React.ChangeEvent<any>\n    ): void | ((eventOrTextValue: string | React.ChangeEvent<any>) => void) => {\n      if (isString(eventOrPath)) {\n        return event => executeChange(event, eventOrPath);\n      } else {\n        executeChange(eventOrPath);\n      }\n    }\n  );\n\n  const setFieldTouched = useEventCallback(\n    (field: string, touched: boolean = true, shouldValidate?: boolean) => {\n      dispatch({\n        type: 'SET_FIELD_TOUCHED',\n        payload: {\n          field,\n          value: touched,\n        },\n      });\n      const willValidate =\n        shouldValidate === undefined ? validateOnBlur : shouldValidate;\n      return willValidate\n        ? validateFormWithHighPriority(state.values)\n        : Promise.resolve();\n    }\n  );\n\n  const executeBlur = React.useCallback(\n    (e: any, path?: string) => {\n      if (e.persist) {\n        e.persist();\n      }\n      const { name, id, outerHTML } = e.target;\n      const field = path ? path : name ? name : id;\n\n      if (!field && __DEV__) {\n        warnAboutMissingIdentifier({\n          htmlContent: outerHTML,\n          documentationAnchorLink: 'handleblur-e-any--void',\n          handlerName: 'handleBlur',\n        });\n      }\n\n      setFieldTouched(field, true);\n    },\n    [setFieldTouched]\n  );\n\n  const handleBlur = useEventCallback<FormikHandlers['handleBlur']>(\n    (eventOrString: any): void | ((e: any) => void) => {\n      if (isString(eventOrString)) {\n        return event => executeBlur(event, eventOrString);\n      } else {\n        executeBlur(eventOrString);\n      }\n    }\n  );\n\n  const setFormikState = React.useCallback(\n    (\n      stateOrCb:\n        | FormikState<Values>\n        | ((state: FormikState<Values>) => FormikState<Values>)\n    ): void => {\n      if (isFunction(stateOrCb)) {\n        dispatch({ type: 'SET_FORMIK_STATE', payload: stateOrCb });\n      } else {\n        dispatch({ type: 'SET_FORMIK_STATE', payload: () => stateOrCb });\n      }\n    },\n    []\n  );\n\n  const setStatus = React.useCallback((status: any) => {\n    dispatch({ type: 'SET_STATUS', payload: status });\n  }, []);\n\n  const setSubmitting = React.useCallback((isSubmitting: boolean) => {\n    dispatch({ type: 'SET_ISSUBMITTING', payload: isSubmitting });\n  }, []);\n\n  const submitForm = useEventCallback(() => {\n    dispatch({ type: 'SUBMIT_ATTEMPT' });\n    return validateFormWithHighPriority().then(\n      (combinedErrors: FormikErrors<Values>) => {\n        // In case an error was thrown and passed to the resolved Promise,\n        // `combinedErrors` can be an instance of an Error. We need to check\n        // that and abort the submit.\n        // If we don't do that, calling `Object.keys(new Error())` yields an\n        // empty array, which causes the validation to pass and the form\n        // to be submitted.\n\n        const isInstanceOfError = combinedErrors instanceof Error;\n        const isActuallyValid =\n          !isInstanceOfError && Object.keys(combinedErrors).length === 0;\n        if (isActuallyValid) {\n          // Proceed with submit...\n          //\n          // To respect sync submit fns, we can't simply wrap executeSubmit in a promise and\n          // _always_ dispatch SUBMIT_SUCCESS because isSubmitting would then always be false.\n          // This would be fine in simple cases, but make it impossible to disable submit\n          // buttons where people use callbacks or promises as side effects (which is basically\n          // all of v1 Formik code). Instead, recall that we are inside of a promise chain already,\n          //  so we can try/catch executeSubmit(), if it returns undefined, then just bail.\n          // If there are errors, throw em. Otherwise, wrap executeSubmit in a promise and handle\n          // cleanup of isSubmitting on behalf of the consumer.\n          let promiseOrUndefined;\n          try {\n            promiseOrUndefined = executeSubmit();\n            // Bail if it's sync, consumer is responsible for cleaning up\n            // via setSubmitting(false)\n            if (promiseOrUndefined === undefined) {\n              return;\n            }\n          } catch (error) {\n            throw error;\n          }\n\n          return Promise.resolve(promiseOrUndefined)\n            .then(result => {\n              if (!!isMounted.current) {\n                dispatch({ type: 'SUBMIT_SUCCESS' });\n              }\n              return result;\n            })\n            .catch(_errors => {\n              if (!!isMounted.current) {\n                dispatch({ type: 'SUBMIT_FAILURE' });\n                // This is a legit error rejected by the onSubmit fn\n                // so we don't want to break the promise chain\n                throw _errors;\n              }\n            });\n        } else if (!!isMounted.current) {\n          // ^^^ Make sure Formik is still mounted before updating state\n          dispatch({ type: 'SUBMIT_FAILURE' });\n          // throw combinedErrors;\n          if (isInstanceOfError) {\n            throw combinedErrors;\n          }\n        }\n        return;\n      }\n    );\n  });\n\n  const handleSubmit = useEventCallback(\n    (e?: React.FormEvent<HTMLFormElement>) => {\n      if (e && e.preventDefault && isFunction(e.preventDefault)) {\n        e.preventDefault();\n      }\n\n      if (e && e.stopPropagation && isFunction(e.stopPropagation)) {\n        e.stopPropagation();\n      }\n\n      // Warn if form submission is triggered by a <button> without a\n      // specified `type` attribute during development. This mitigates\n      // a common gotcha in forms with both reset and submit buttons,\n      // where the dev forgets to add type=\"button\" to the reset button.\n      if (__DEV__ && typeof document !== 'undefined') {\n        // Safely get the active element (works with IE)\n        const activeElement = getActiveElement();\n        if (\n          activeElement !== null &&\n          activeElement instanceof HTMLButtonElement\n        ) {\n          invariant(\n            activeElement.attributes &&\n              activeElement.attributes.getNamedItem('type'),\n            'You submitted a Formik form using a button with an unspecified `type` attribute.  Most browsers default button elements to `type=\"submit\"`. If this is not a submit button, please add `type=\"button\"`.'\n          );\n        }\n      }\n\n      submitForm().catch(reason => {\n        console.warn(\n          `Warning: An unhandled error was caught from submitForm()`,\n          reason\n        );\n      });\n    }\n  );\n\n  const imperativeMethods: FormikHelpers<Values> = {\n    resetForm,\n    validateForm: validateFormWithHighPriority,\n    validateField,\n    setErrors,\n    setFieldError,\n    setFieldTouched,\n    setFieldValue,\n    setStatus,\n    setSubmitting,\n    setTouched,\n    setValues,\n    setFormikState,\n    submitForm,\n  };\n\n  const executeSubmit = useEventCallback(() => {\n    return onSubmit(state.values, imperativeMethods);\n  });\n\n  const handleReset = useEventCallback(e => {\n    if (e && e.preventDefault && isFunction(e.preventDefault)) {\n      e.preventDefault();\n    }\n\n    if (e && e.stopPropagation && isFunction(e.stopPropagation)) {\n      e.stopPropagation();\n    }\n\n    resetForm();\n  });\n\n  const getFieldMeta = React.useCallback(\n    (name: string): FieldMetaProps<any> => {\n      return {\n        value: getIn(state.values, name),\n        error: getIn(state.errors, name),\n        touched: !!getIn(state.touched, name),\n        initialValue: getIn(initialValues.current, name),\n        initialTouched: !!getIn(initialTouched.current, name),\n        initialError: getIn(initialErrors.current, name),\n      };\n    },\n    [state.errors, state.touched, state.values]\n  );\n\n  const getFieldHelpers = React.useCallback(\n    (name: string): FieldHelperProps<any> => {\n      return {\n        setValue: (value: any, shouldValidate?: boolean) =>\n          setFieldValue(name, value, shouldValidate),\n        setTouched: (value: boolean, shouldValidate?: boolean) =>\n          setFieldTouched(name, value, shouldValidate),\n        setError: (value: any) => setFieldError(name, value),\n      };\n    },\n    [setFieldValue, setFieldTouched, setFieldError]\n  );\n\n  const getFieldProps = React.useCallback(\n    (nameOrOptions): FieldInputProps<any> => {\n      const isAnObject = isObject(nameOrOptions);\n      const name = isAnObject ? nameOrOptions.name : nameOrOptions;\n      const valueState = getIn(state.values, name);\n\n      const field: FieldInputProps<any> = {\n        name,\n        value: valueState,\n        onChange: handleChange,\n        onBlur: handleBlur,\n      };\n      if (isAnObject) {\n        const {\n          type,\n          value: valueProp, // value is special for checkboxes\n          as: is,\n          multiple,\n        } = nameOrOptions;\n\n        if (type === 'checkbox') {\n          if (valueProp === undefined) {\n            field.checked = !!valueState;\n          } else {\n            field.checked = !!(\n              Array.isArray(valueState) && ~valueState.indexOf(valueProp)\n            );\n            field.value = valueProp;\n          }\n        } else if (type === 'radio') {\n          field.checked = valueState === valueProp;\n          field.value = valueProp;\n        } else if (is === 'select' && multiple) {\n          field.value = field.value || [];\n          field.multiple = true;\n        }\n      }\n      return field;\n    },\n    [handleBlur, handleChange, state.values]\n  );\n\n  const dirty = React.useMemo(\n    () => !isEqual(initialValues.current, state.values),\n    [initialValues.current, state.values]\n  );\n\n  const isValid = React.useMemo(\n    () =>\n      typeof isInitialValid !== 'undefined'\n        ? dirty\n          ? state.errors && Object.keys(state.errors).length === 0\n          : isInitialValid !== false && isFunction(isInitialValid)\n          ? (isInitialValid as (props: FormikConfig<Values>) => boolean)(props)\n          : (isInitialValid as boolean)\n        : state.errors && Object.keys(state.errors).length === 0,\n    [isInitialValid, dirty, state.errors, props]\n  );\n\n  const ctx = {\n    ...state,\n    initialValues: initialValues.current,\n    initialErrors: initialErrors.current,\n    initialTouched: initialTouched.current,\n    initialStatus: initialStatus.current,\n    handleBlur,\n    handleChange,\n    handleReset,\n    handleSubmit,\n    resetForm,\n    setErrors,\n    setFormikState,\n    setFieldTouched,\n    setFieldValue,\n    setFieldError,\n    setStatus,\n    setSubmitting,\n    setTouched,\n    setValues,\n    submitForm,\n    validateForm: validateFormWithHighPriority,\n    validateField,\n    isValid,\n    dirty,\n    unregisterField,\n    registerField,\n    getFieldProps,\n    getFieldMeta,\n    getFieldHelpers,\n    validateOnBlur,\n    validateOnChange,\n    validateOnMount,\n  };\n\n  return ctx;\n}\n\nexport function Formik<\n  Values extends FormikValues = FormikValues,\n  ExtraProps = {}\n>(props: FormikConfig<Values> & ExtraProps) {\n  const formikbag = useFormik<Values>(props);\n  const { component, children, render, innerRef } = props;\n\n  // This allows folks to pass a ref to <Formik />\n  React.useImperativeHandle(innerRef, () => formikbag);\n\n  if (__DEV__) {\n    // eslint-disable-next-line react-hooks/rules-of-hooks\n    React.useEffect(() => {\n      invariant(\n        !props.render,\n        `<Formik render> has been deprecated and will be removed in future versions of Formik. Please use a child callback function instead. To get rid of this warning, replace <Formik render={(props) => ...} /> with <Formik>{(props) => ...}</Formik>`\n      );\n      // eslint-disable-next-line\n    }, []);\n  }\n  return (\n    <FormikProvider value={formikbag}>\n      {component\n        ? React.createElement(component as any, formikbag)\n        : render\n        ? render(formikbag)\n        : children // children come last, always called\n        ? isFunction(children)\n          ? (children as (bag: FormikProps<Values>) => React.ReactNode)(\n              formikbag as FormikProps<Values>\n            )\n          : !isEmptyChildren(children)\n          ? React.Children.only(children)\n          : null\n        : null}\n    </FormikProvider>\n  );\n}\n\nfunction warnAboutMissingIdentifier({\n  htmlContent,\n  documentationAnchorLink,\n  handlerName,\n}: {\n  htmlContent: string;\n  documentationAnchorLink: string;\n  handlerName: string;\n}) {\n  console.warn(\n    `Warning: Formik called \\`${handlerName}\\`, but you forgot to pass an \\`id\\` or \\`name\\` attribute to your input:\n    ${htmlContent}\n    Formik cannot determine which value to update. For more info see https://formik.org/docs/api/formik#${documentationAnchorLink}\n  `\n  );\n}\n\n/**\n * Transform Yup ValidationError to a more usable object\n */\nexport function yupToFormErrors<Values>(yupError: any): FormikErrors<Values> {\n  let errors: FormikErrors<Values> = {};\n  if (yupError.inner) {\n    if (yupError.inner.length === 0) {\n      return setIn(errors, yupError.path, yupError.message);\n    }\n    for (let err of yupError.inner) {\n      if (!getIn(errors, err.path)) {\n        errors = setIn(errors, err.path, err.message);\n      }\n    }\n  }\n  return errors;\n}\n\n/**\n * Validate a yup schema.\n */\nexport function validateYupSchema<T extends FormikValues>(\n  values: T,\n  schema: any,\n  sync: boolean = false,\n  context: any = {}\n): Promise<Partial<T>> {\n  const validateData: FormikValues = prepareDataForValidation(values);\n  return schema[sync ? 'validateSync' : 'validate'](validateData, {\n    abortEarly: false,\n    context: context,\n  });\n}\n\n/**\n * Recursively prepare values.\n */\nexport function prepareDataForValidation<T extends FormikValues>(\n  values: T\n): FormikValues {\n  let data: FormikValues = Array.isArray(values) ? [] : {};\n  for (let k in values) {\n    if (Object.prototype.hasOwnProperty.call(values, k)) {\n      const key = String(k);\n      if (Array.isArray(values[key]) === true) {\n        data[key] = values[key].map((value: any) => {\n          if (Array.isArray(value) === true || isPlainObject(value)) {\n            return prepareDataForValidation(value);\n          } else {\n            return value !== '' ? value : undefined;\n          }\n        });\n      } else if (isPlainObject(values[key])) {\n        data[key] = prepareDataForValidation(values[key]);\n      } else {\n        data[key] = values[key] !== '' ? values[key] : undefined;\n      }\n    }\n  }\n  return data;\n}\n\n/**\n * deepmerge array merging algorithm\n * https://github.com/KyleAMathews/deepmerge#combine-array\n */\nfunction arrayMerge(target: any[], source: any[], options: any): any[] {\n  const destination = target.slice();\n\n  source.forEach(function merge(e: any, i: number) {\n    if (typeof destination[i] === 'undefined') {\n      const cloneRequested = options.clone !== false;\n      const shouldClone = cloneRequested && options.isMergeableObject(e);\n      destination[i] = shouldClone\n        ? deepmerge(Array.isArray(e) ? [] : {}, e, options)\n        : e;\n    } else if (options.isMergeableObject(e)) {\n      destination[i] = deepmerge(target[i], e, options);\n    } else if (target.indexOf(e) === -1) {\n      destination.push(e);\n    }\n  });\n  return destination;\n}\n\n/** Return multi select values based on an array of options */\nfunction getSelectedValues(options: any[]) {\n  return Array.from(options)\n    .filter(el => el.selected)\n    .map(el => el.value);\n}\n\n/** Return the next value for a checkbox */\nfunction getValueForCheckbox(\n  currentValue: string | any[],\n  checked: boolean,\n  valueProp: any\n) {\n  // If the current value was a boolean, return a boolean\n  if (typeof currentValue === 'boolean') {\n    return Boolean(checked);\n  }\n\n  // If the currentValue was not a boolean we want to return an array\n  let currentArrayOfValues = [];\n  let isValueInArray = false;\n  let index = -1;\n\n  if (!Array.isArray(currentValue)) {\n    // eslint-disable-next-line eqeqeq\n    if (!valueProp || valueProp == 'true' || valueProp == 'false') {\n      return Boolean(checked);\n    }\n  } else {\n    // If the current value is already an array, use it\n    currentArrayOfValues = currentValue;\n    index = currentValue.indexOf(valueProp);\n    isValueInArray = index >= 0;\n  }\n\n  // If the checkbox was checked and the value is not already present in the aray we want to add the new value to the array of values\n  if (checked && valueProp && !isValueInArray) {\n    return currentArrayOfValues.concat(valueProp);\n  }\n\n  // If the checkbox was unchecked and the value is not in the array, simply return the already existing array of values\n  if (!isValueInArray) {\n    return currentArrayOfValues;\n  }\n\n  // If the checkbox was unchecked and the value is in the array, remove the value and return the array\n  return currentArrayOfValues\n    .slice(0, index)\n    .concat(currentArrayOfValues.slice(index + 1));\n}\n\n// React currently throws a warning when using useLayoutEffect on the server.\n// To get around it, we can conditionally useEffect on the server (no-op) and\n// useLayoutEffect in the browser.\n// @see https://gist.github.com/gaearon/e7d97cdf38a2907924ea12e4ebdf3c85\nconst useIsomorphicLayoutEffect =\n  typeof window !== 'undefined' &&\n  typeof window.document !== 'undefined' &&\n  typeof window.document.createElement !== 'undefined'\n    ? React.useLayoutEffect\n    : React.useEffect;\n\nfunction useEventCallback<T extends (...args: any[]) => any>(fn: T): T {\n  const ref: any = React.useRef(fn);\n\n  // we copy a ref to the callback scoped to the current state/props on each render\n  useIsomorphicLayoutEffect(() => {\n    ref.current = fn;\n  });\n\n  return React.useCallback(\n    (...args: any[]) => ref.current.apply(void 0, args),\n    []\n  ) as T;\n}\n","import * as React from 'react';\nimport { useFormikContext } from './FormikContext';\n\nexport type FormikFormProps = Pick<\n  React.FormHTMLAttributes<HTMLFormElement>,\n  Exclude<\n    keyof React.FormHTMLAttributes<HTMLFormElement>,\n    'onReset' | 'onSubmit'\n  >\n>;\n\ntype FormProps = React.ComponentPropsWithoutRef<'form'>;\n\n// @todo tests\nexport const Form = React.forwardRef<HTMLFormElement, FormProps>(\n  (props: FormikFormProps, ref) => {\n    // iOS needs an \"action\" attribute for nice input: https://stackoverflow.com/a/39485162/406725\n    // We default the action to \"#\" in case the preventDefault fails (just updates the URL hash)\n    const { action, ...rest } = props;\n    const _action = action || '#';\n    const { handleReset, handleSubmit } = useFormikContext();\n    return (\n      <form\n        onSubmit={handleSubmit}\n        ref={ref}\n        onReset={handleReset}\n        action={_action}\n        {...rest}\n      />\n    );\n  }\n);\n\nForm.displayName = 'Form';\n","import * as React from 'react';\nimport hoistNonReactStatics from 'hoist-non-react-statics';\n\nimport { FormikContextType } from './types';\nimport { FormikConsumer } from './FormikContext';\nimport invariant from 'tiny-warning';\n\n/**\n * Connect any component to Formik context, and inject as a prop called `formik`;\n * @param Comp React Component\n */\nexport function connect<OuterProps, Values = {}>(\n  Comp: React.ComponentType<OuterProps & { formik: FormikContextType<Values> }>\n) {\n  const C: React.FC<OuterProps> = (props: OuterProps) => (\n    <FormikConsumer>\n      {formik => {\n        invariant(\n          !!formik,\n          `Formik context is undefined, please verify you are rendering <Form>, <Field>, <FastField>, <FieldArray>, or your custom context-using component as a child of a <Formik> component. Component name: ${Comp.name}`\n        );\n        return <Comp {...props} formik={formik} />;\n      }}\n    </FormikConsumer>\n  );\n  const componentDisplayName =\n    Comp.displayName ||\n    Comp.name ||\n    (Comp.constructor && Comp.constructor.name) ||\n    'Component';\n\n  // Assign Comp to C.WrappedComponent so we can access the inner component in tests\n  // For example, <Field.WrappedComponent /> gets us <FieldInner/>\n  (C as React.FC<OuterProps> & {\n    WrappedComponent: React.ReactNode;\n  }).WrappedComponent = Comp;\n\n  C.displayName = `FormikConnect(${componentDisplayName})`;\n\n  return hoistNonReactStatics(\n    C,\n    Comp as React.ComponentClass<\n      OuterProps & { formik: FormikContextType<Values> }\n    > // cast type to ComponentClass (even if SFC)\n  ) as React.ComponentType<OuterProps>;\n}\n","import * as React from 'react';\nimport cloneDeep from 'lodash/cloneDeep';\nimport { connect } from './connect';\nimport {\n  FormikContextType,\n  FormikState,\n  SharedRenderProps,\n  FormikProps,\n} from './types';\nimport {\n  getIn,\n  isEmptyChildren,\n  isFunction,\n  setIn,\n  isEmptyArray,\n} from './utils';\nimport isEqual from 'react-fast-compare';\n\nexport type FieldArrayRenderProps = ArrayHelpers & {\n  form: FormikProps<any>;\n  name: string;\n};\n\nexport type FieldArrayConfig = {\n  /** Really the path to the array field to be updated */\n  name: string;\n  /** Should field array validate the form AFTER array updates/changes? */\n  validateOnChange?: boolean;\n} & SharedRenderProps<FieldArrayRenderProps>;\nexport interface ArrayHelpers {\n  /** Imperatively add a value to the end of an array */\n  push: (obj: any) => void;\n  /** Curried fn to add a value to the end of an array */\n  handlePush: (obj: any) => () => void;\n  /** Imperatively swap two values in an array */\n  swap: (indexA: number, indexB: number) => void;\n  /** Curried fn to swap two values in an array */\n  handleSwap: (indexA: number, indexB: number) => () => void;\n  /** Imperatively move an element in an array to another index */\n  move: (from: number, to: number) => void;\n  /** Imperatively move an element in an array to another index */\n  handleMove: (from: number, to: number) => () => void;\n  /** Imperatively insert an element at a given index into the array */\n  insert: (index: number, value: any) => void;\n  /** Curried fn to insert an element at a given index into the array */\n  handleInsert: (index: number, value: any) => () => void;\n  /** Imperatively replace a value at an index of an array  */\n  replace: (index: number, value: any) => void;\n  /** Curried fn to replace an element at a given index into the array */\n  handleReplace: (index: number, value: any) => () => void;\n  /** Imperatively add an element to the beginning of an array and return its length */\n  unshift: (value: any) => number;\n  /** Curried fn to add an element to the beginning of an array */\n  handleUnshift: (value: any) => () => void;\n  /** Curried fn to remove an element at an index of an array */\n  handleRemove: (index: number) => () => void;\n  /** Curried fn to remove a value from the end of the array */\n  handlePop: () => () => void;\n  /** Imperatively remove and element at an index of an array */\n  remove<T>(index: number): T | undefined;\n  /** Imperatively remove and return value from the end of the array */\n  pop<T>(): T | undefined;\n}\n\n/**\n * Some array helpers!\n */\nexport const move = (array: any[], from: number, to: number) => {\n  const copy = copyArrayLike(array);\n  const value = copy[from];\n  copy.splice(from, 1);\n  copy.splice(to, 0, value);\n  return copy;\n};\n\nexport const swap = (\n  arrayLike: ArrayLike<any>,\n  indexA: number,\n  indexB: number\n) => {\n  const copy = copyArrayLike(arrayLike);\n  const a = copy[indexA];\n  copy[indexA] = copy[indexB];\n  copy[indexB] = a;\n  return copy;\n};\n\nexport const insert = (\n  arrayLike: ArrayLike<any>,\n  index: number,\n  value: any\n) => {\n  const copy = copyArrayLike(arrayLike);\n  copy.splice(index, 0, value);\n  return copy;\n};\n\nexport const replace = (\n  arrayLike: ArrayLike<any>,\n  index: number,\n  value: any\n) => {\n  const copy = copyArrayLike(arrayLike);\n  copy[index] = value;\n  return copy;\n};\n\nconst copyArrayLike = (arrayLike: ArrayLike<any>) => {\n  if (!arrayLike) {\n    return [];\n  } else if (Array.isArray(arrayLike)) {\n    return [...arrayLike];\n  } else {\n    const maxIndex = Object.keys(arrayLike)\n      .map(key => parseInt(key))\n      .reduce((max, el) => (el > max ? el : max), 0);\n    return Array.from({ ...arrayLike, length: maxIndex + 1 });\n  }\n};\n\nclass FieldArrayInner<Values = {}> extends React.Component<\n  FieldArrayConfig & { formik: FormikContextType<Values> },\n  {}\n> {\n  static defaultProps = {\n    validateOnChange: true,\n  };\n\n  constructor(props: FieldArrayConfig & { formik: FormikContextType<Values> }) {\n    super(props);\n    // We need TypeScript generics on these, so we'll bind them in the constructor\n    // @todo Fix TS 3.2.1\n    this.remove = this.remove.bind(this) as any;\n    this.pop = this.pop.bind(this) as any;\n  }\n\n  componentDidUpdate(\n    prevProps: FieldArrayConfig & { formik: FormikContextType<Values> }\n  ) {\n    if (\n      this.props.validateOnChange &&\n      this.props.formik.validateOnChange &&\n      !isEqual(\n        getIn(prevProps.formik.values, prevProps.name),\n        getIn(this.props.formik.values, this.props.name)\n      )\n    ) {\n      this.props.formik.validateForm(this.props.formik.values);\n    }\n  }\n\n  updateArrayField = (\n    fn: Function,\n    alterTouched: boolean | Function,\n    alterErrors: boolean | Function\n  ) => {\n    const {\n      name,\n\n      formik: { setFormikState },\n    } = this.props;\n    setFormikState((prevState: FormikState<any>) => {\n      let updateErrors = typeof alterErrors === 'function' ? alterErrors : fn;\n      let updateTouched =\n        typeof alterTouched === 'function' ? alterTouched : fn;\n\n      // values fn should be executed before updateErrors and updateTouched,\n      // otherwise it causes an error with unshift.\n      let values = setIn(\n        prevState.values,\n        name,\n        fn(getIn(prevState.values, name))\n      );\n\n      let fieldError = alterErrors\n        ? updateErrors(getIn(prevState.errors, name))\n        : undefined;\n      let fieldTouched = alterTouched\n        ? updateTouched(getIn(prevState.touched, name))\n        : undefined;\n\n      if (isEmptyArray(fieldError)) {\n        fieldError = undefined;\n      }\n      if (isEmptyArray(fieldTouched)) {\n        fieldTouched = undefined;\n      }\n\n      return {\n        ...prevState,\n        values,\n        errors: alterErrors\n          ? setIn(prevState.errors, name, fieldError)\n          : prevState.errors,\n        touched: alterTouched\n          ? setIn(prevState.touched, name, fieldTouched)\n          : prevState.touched,\n      };\n    });\n  };\n\n  push = (value: any) =>\n    this.updateArrayField(\n      (arrayLike: ArrayLike<any>) => [\n        ...copyArrayLike(arrayLike),\n        cloneDeep(value),\n      ],\n      false,\n      false\n    );\n\n  handlePush = (value: any) => () => this.push(value);\n\n  swap = (indexA: number, indexB: number) =>\n    this.updateArrayField(\n      (array: any[]) => swap(array, indexA, indexB),\n      true,\n      true\n    );\n\n  handleSwap = (indexA: number, indexB: number) => () =>\n    this.swap(indexA, indexB);\n\n  move = (from: number, to: number) =>\n    this.updateArrayField((array: any[]) => move(array, from, to), true, true);\n\n  handleMove = (from: number, to: number) => () => this.move(from, to);\n\n  insert = (index: number, value: any) =>\n    this.updateArrayField(\n      (array: any[]) => insert(array, index, value),\n      (array: any[]) => insert(array, index, null),\n      (array: any[]) => insert(array, index, null)\n    );\n\n  handleInsert = (index: number, value: any) => () => this.insert(index, value);\n\n  replace = (index: number, value: any) =>\n    this.updateArrayField(\n      (array: any[]) => replace(array, index, value),\n      false,\n      false\n    );\n\n  handleReplace = (index: number, value: any) => () =>\n    this.replace(index, value);\n\n  unshift = (value: any) => {\n    let length = -1;\n    this.updateArrayField(\n      (array: any[]) => {\n        const arr = array ? [value, ...array] : [value];\n        if (length < 0) {\n          length = arr.length;\n        }\n        return arr;\n      },\n      (array: any[]) => {\n        const arr = array ? [null, ...array] : [null];\n        if (length < 0) {\n          length = arr.length;\n        }\n        return arr;\n      },\n      (array: any[]) => {\n        const arr = array ? [null, ...array] : [null];\n        if (length < 0) {\n          length = arr.length;\n        }\n        return arr;\n      }\n    );\n    return length;\n  };\n\n  handleUnshift = (value: any) => () => this.unshift(value);\n\n  remove<T>(index: number): T {\n    // We need to make sure we also remove relevant pieces of `touched` and `errors`\n    let result: any;\n    this.updateArrayField(\n      // so this gets call 3 times\n      (array?: any[]) => {\n        const copy = array ? copyArrayLike(array) : [];\n        if (!result) {\n          result = copy[index];\n        }\n        if (isFunction(copy.splice)) {\n          copy.splice(index, 1);\n        }\n        return copy;\n      },\n      true,\n      true\n    );\n\n    return result as T;\n  }\n\n  handleRemove = (index: number) => () => this.remove<any>(index);\n\n  pop<T>(): T {\n    // Remove relevant pieces of `touched` and `errors` too!\n    let result: any;\n    this.updateArrayField(\n      // so this gets call 3 times\n      (array: any[]) => {\n        const tmp = array;\n        if (!result) {\n          result = tmp && tmp.pop && tmp.pop();\n        }\n        return tmp;\n      },\n      true,\n      true\n    );\n\n    return result as T;\n  }\n\n  handlePop = () => () => this.pop<any>();\n\n  render() {\n    const arrayHelpers: ArrayHelpers = {\n      push: this.push,\n      pop: this.pop,\n      swap: this.swap,\n      move: this.move,\n      insert: this.insert,\n      replace: this.replace,\n      unshift: this.unshift,\n      remove: this.remove,\n      handlePush: this.handlePush,\n      handlePop: this.handlePop,\n      handleSwap: this.handleSwap,\n      handleMove: this.handleMove,\n      handleInsert: this.handleInsert,\n      handleReplace: this.handleReplace,\n      handleUnshift: this.handleUnshift,\n      handleRemove: this.handleRemove,\n    };\n\n    const {\n      component,\n      render,\n      children,\n      name,\n      formik: {\n        validate: _validate,\n        validationSchema: _validationSchema,\n        ...restOfFormik\n      },\n    } = this.props;\n\n    const props: FieldArrayRenderProps = {\n      ...arrayHelpers,\n      form: restOfFormik,\n      name,\n    };\n\n    return component\n      ? React.createElement(component as any, props)\n      : render\n      ? (render as any)(props)\n      : children // children come last, always called\n      ? typeof children === 'function'\n        ? (children as any)(props)\n        : !isEmptyChildren(children)\n        ? React.Children.only(children)\n        : null\n      : null;\n  }\n}\n\nexport const FieldArray = connect<FieldArrayConfig, any>(FieldArrayInner);\n","import * as React from 'react';\nimport { FormikContextType } from './types';\nimport { getIn, isFunction } from './utils';\nimport { connect } from './connect';\n\nexport interface ErrorMessageProps {\n  name: string;\n  className?: string;\n  component?: string | React.ComponentType;\n  children?: (errorMessage: string) => React.ReactNode;\n  render?: (errorMessage: string) => React.ReactNode;\n}\n\nclass ErrorMessageImpl extends React.Component<\n  ErrorMessageProps & { formik: FormikContextType<any> }\n> {\n  shouldComponentUpdate(\n    props: ErrorMessageProps & { formik: FormikContextType<any> }\n  ) {\n    if (\n      getIn(this.props.formik.errors, this.props.name) !==\n        getIn(props.formik.errors, this.props.name) ||\n      getIn(this.props.formik.touched, this.props.name) !==\n        getIn(props.formik.touched, this.props.name) ||\n      Object.keys(this.props).length !== Object.keys(props).length\n    ) {\n      return true;\n    } else {\n      return false;\n    }\n  }\n\n  render() {\n    let { component, formik, render, children, name, ...rest } = this.props;\n\n    const touch = getIn(formik.touched, name);\n    const error = getIn(formik.errors, name);\n\n    return !!touch && !!error\n      ? render\n        ? isFunction(render)\n          ? render(error)\n          : null\n        : children\n        ? isFunction(children)\n          ? children(error)\n          : null\n        : component\n        ? React.createElement(component, rest as any, error)\n        : error\n      : null;\n  }\n}\n\nexport const ErrorMessage = connect<\n  ErrorMessageProps,\n  ErrorMessageProps & { formik: FormikContextType<any> }\n>(ErrorMessageImpl);\n","import * as React from 'react';\n\nimport {\n  FormikProps,\n  GenericFieldHTMLAttributes,\n  FormikContextType,\n  FieldMetaProps,\n  FieldInputProps,\n} from './types';\nimport invariant from 'tiny-warning';\nimport { getIn, isEmptyChildren, isFunction } from './utils';\nimport { FieldConfig } from './Field';\nimport { connect } from './connect';\n\ntype $FixMe = any;\n\nexport interface FastFieldProps<V = any> {\n  field: FieldInputProps<V>;\n  meta: FieldMetaProps<V>;\n  form: FormikProps<V>; // if ppl want to restrict this for a given form, let them.\n}\n\nexport type FastFieldConfig<T> = FieldConfig & {\n  /** Override FastField's default shouldComponentUpdate */\n  shouldUpdate?: (\n    nextProps: T & GenericFieldHTMLAttributes,\n    props: {}\n  ) => boolean;\n};\n\nexport type FastFieldAttributes<T> = GenericFieldHTMLAttributes &\n  FastFieldConfig<T> &\n  T;\n\ntype FastFieldInnerProps<Values = {}, Props = {}> = FastFieldAttributes<\n  Props\n> & { formik: FormikContextType<Values> };\n\n/**\n * Custom Field component for quickly hooking into Formik\n * context and wiring up forms.\n */\nclass FastFieldInner<Values = {}, Props = {}> extends React.Component<\n  FastFieldInnerProps<Values, Props>,\n  {}\n> {\n  constructor(props: FastFieldInnerProps<Values, Props>) {\n    super(props);\n    const { render, children, component, as: is, name } = props;\n    invariant(\n      !render,\n      `<FastField render> has been deprecated. Please use a child callback function instead: <FastField name={${name}}>{props => ...}</FastField> instead.`\n    );\n    invariant(\n      !(component && render),\n      'You should not use <FastField component> and <FastField render> in the same <FastField> component; <FastField component> will be ignored'\n    );\n\n    invariant(\n      !(is && children && isFunction(children)),\n      'You should not use <FastField as> and <FastField children> as a function in the same <FastField> component; <FastField as> will be ignored.'\n    );\n\n    invariant(\n      !(component && children && isFunction(children)),\n      'You should not use <FastField component> and <FastField children> as a function in the same <FastField> component; <FastField component> will be ignored.'\n    );\n\n    invariant(\n      !(render && children && !isEmptyChildren(children)),\n      'You should not use <FastField render> and <FastField children> in the same <FastField> component; <FastField children> will be ignored'\n    );\n  }\n\n  shouldComponentUpdate(props: FastFieldInnerProps<Values, Props>) {\n    if (this.props.shouldUpdate) {\n      return this.props.shouldUpdate(props, this.props);\n    } else if (\n      props.name !== this.props.name ||\n      getIn(props.formik.values, this.props.name) !==\n        getIn(this.props.formik.values, this.props.name) ||\n      getIn(props.formik.errors, this.props.name) !==\n        getIn(this.props.formik.errors, this.props.name) ||\n      getIn(props.formik.touched, this.props.name) !==\n        getIn(this.props.formik.touched, this.props.name) ||\n      Object.keys(this.props).length !== Object.keys(props).length ||\n      props.formik.isSubmitting !== this.props.formik.isSubmitting\n    ) {\n      return true;\n    } else {\n      return false;\n    }\n  }\n\n  componentDidMount() {\n    // Register the Field with the parent Formik. Parent will cycle through\n    // registered Field's validate fns right prior to submit\n    this.props.formik.registerField(this.props.name, {\n      validate: this.props.validate,\n    });\n  }\n\n  componentDidUpdate(prevProps: FastFieldAttributes<Props>) {\n    if (this.props.name !== prevProps.name) {\n      this.props.formik.unregisterField(prevProps.name);\n      this.props.formik.registerField(this.props.name, {\n        validate: this.props.validate,\n      });\n    }\n\n    if (this.props.validate !== prevProps.validate) {\n      this.props.formik.registerField(this.props.name, {\n        validate: this.props.validate,\n      });\n    }\n  }\n\n  componentWillUnmount() {\n    this.props.formik.unregisterField(this.props.name);\n  }\n\n  render() {\n    const {\n      validate,\n      name,\n      render,\n      as: is,\n      children,\n      component,\n      shouldUpdate,\n      formik,\n      ...props\n    } = this.props as FastFieldInnerProps<Values, Props>;\n\n    const {\n      validate: _validate,\n      validationSchema: _validationSchema,\n      ...restOfFormik\n    } = formik;\n    const field = formik.getFieldProps({ name, ...props });\n    const meta = {\n      value: getIn(formik.values, name),\n      error: getIn(formik.errors, name),\n      touched: !!getIn(formik.touched, name),\n      initialValue: getIn(formik.initialValues, name),\n      initialTouched: !!getIn(formik.initialTouched, name),\n      initialError: getIn(formik.initialErrors, name),\n    };\n\n    const bag = { field, meta, form: restOfFormik };\n\n    if (render) {\n      return (render as any)(bag);\n    }\n\n    if (isFunction(children)) {\n      return (children as (props: FastFieldProps<any>) => React.ReactNode)(bag);\n    }\n\n    if (component) {\n      // This behavior is backwards compat with earlier Formik 0.9 to 1.x\n      if (typeof component === 'string') {\n        const { innerRef, ...rest } = props;\n        return React.createElement(\n          component,\n          { ref: innerRef, ...field, ...(rest as $FixMe) },\n          children\n        );\n      }\n      // We don't pass `meta` for backwards compat\n      return React.createElement(\n        component as React.ComponentClass<$FixMe>,\n        { field, form: formik, ...props },\n        children\n      );\n    }\n\n    // default to input here so we can check for both `as` and `children` above\n    const asElement = is || 'input';\n\n    if (typeof asElement === 'string') {\n      const { innerRef, ...rest } = props;\n      return React.createElement(\n        asElement,\n        { ref: innerRef, ...field, ...(rest as $FixMe) },\n        children\n      );\n    }\n\n    return React.createElement(\n      asElement as React.ComponentClass,\n      { ...field, ...props },\n      children\n    );\n  }\n}\n\nexport const FastField = connect<FastFieldAttributes<any>, any>(FastFieldInner);\n","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n\r\nimport {\r\n    ObjAssign, ObjClass, ObjCreate, ObjDefineProperty, ObjHasOwnProperty, ObjProto,\r\n    strDefault, strShimFunction, strShimHasOwnProperty, strShimPrototype\r\n} from \"./Constants\";\r\nimport { getGlobal, objCreateFn, throwTypeError } from \"./Helpers\";\r\n\r\n// Most of these functions have been directly shamelessly \"lifted\" from the https://github.com/@microsoft/tslib and\r\n// modified to be ES3 compatible and applying several minification and tree-shaking techniques so that Application Insights\r\n// can successfully use TypeScript \"importHelpers\" which imports tslib during compilation but it will use these at runtime\r\n// Which is also why all of the functions have not been included as Application Insights currently doesn't use or require\r\n// them.\r\n\r\nexport const SymbolObj = (getGlobal()||{})[\"Symbol\"];\r\nexport const ReflectObj = (getGlobal()||{})[\"Reflect\"];\r\nexport const __hasSymbol = !!SymbolObj;\r\nexport const __hasReflect = !!ReflectObj;\r\n\r\nconst strDecorate = \"decorate\";\r\nconst strMetadata = \"metadata\";\r\nconst strGetOwnPropertySymbols = \"getOwnPropertySymbols\";\r\nconst strIterator = \"iterator\";\r\n\r\nexport declare type ObjAssignFunc = (t: any, ...sources:any[]) => any;\r\n\r\nexport var __objAssignFnImpl: ObjAssignFunc = function(t: any): any {\r\n    // tslint:disable-next-line: ban-comma-operator\r\n    for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n        s = arguments[i];\r\n        for (var p in s) {\r\n            if (ObjProto[strShimHasOwnProperty].call(s, p)) {\r\n                (t as any)[p] = s[p];\r\n            }\r\n        }\r\n    }\r\n    return t;\r\n}\r\n\r\nexport var __assignFn: ObjAssignFunc = ObjAssign || __objAssignFnImpl;\r\n\r\n// tslint:disable-next-line: only-arrow-functions\r\nvar extendStaticsFn = function(d: any, b: any): any {\r\n    extendStaticsFn = ObjClass[\"setPrototypeOf\"] ||\r\n        // tslint:disable-next-line: only-arrow-functions\r\n        ({ __proto__: [] } instanceof Array && function (d: any, b: any) { d.__proto__ = b; }) ||\r\n        // tslint:disable-next-line: only-arrow-functions\r\n        function (d: any, b: any) { \r\n            for (var p in b) {\r\n                if (b[strShimHasOwnProperty](p)) {\r\n                    d[p] = b[p];\r\n                }\r\n            }\r\n        };\r\n    return extendStaticsFn(d, b);\r\n};\r\n\r\nexport function __extendsFn(d: any, b: any) {\r\n    if (typeof b !== strShimFunction && b !== null) {\r\n        throwTypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\"); \r\n    }\r\n    extendStaticsFn(d, b);\r\n    function __() { this.constructor = d; }\r\n    // tslint:disable-next-line: ban-comma-operator\r\n    d[strShimPrototype] = b === null ? objCreateFn(b) : (__[strShimPrototype] = b[strShimPrototype], new (__ as any)());\r\n}\r\n\r\nexport function __restFn(s: any, e: any) {\r\n    var t = {};\r\n    for (var k in s) {\r\n        if (ObjHasOwnProperty.call(s, k) && e.indexOf(k) < 0) {\r\n            t[k] = s[k];\r\n        }\r\n    }\r\n    if (s != null && typeof ObjClass[strGetOwnPropertySymbols] === strShimFunction) {\r\n        for (var i = 0, p = ObjClass[strGetOwnPropertySymbols](s); i < p.length; i++) {\r\n            if (e.indexOf(p[i]) < 0 && ObjProto[\"propertyIsEnumerable\"].call(s, p[i])) {\r\n                t[p[i]] = s[p[i]];\r\n            }\r\n        }\r\n    }\r\n    return t;\r\n}\r\n\r\nexport function __decorateFn(decorators: any, target: any, key: any, desc: any) {\r\n    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = ObjClass[\"getOwnPropertyDescriptor\"](target, key) : desc, d;\r\n    if (__hasReflect && typeof ReflectObj[strDecorate] === strShimFunction) {\r\n        r = ReflectObj[strDecorate](decorators, target, key, desc);\r\n    } else {\r\n        for (var i = decorators.length - 1; i >= 0; i--) {\r\n            // tslint:disable-next-line:no-conditional-assignment\r\n            if (d = decorators[i]) {\r\n                r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n            }\r\n        }\r\n    }\r\n\r\n    // tslint:disable-next-line:ban-comma-operator\r\n    return c > 3 && r && ObjDefineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __paramFn(paramIndex: number, decorator: Function) {\r\n    return function (target: any, key: any) { \r\n        decorator(target, key, paramIndex); \r\n    }\r\n}\r\n\r\nexport function __metadataFn(metadataKey: any, metadataValue: any) {\r\n    if (__hasReflect && ReflectObj[strMetadata] === strShimFunction) {\r\n        return ReflectObj[strMetadata](metadataKey, metadataValue);\r\n    }\r\n}\r\n\r\nexport function __exportStarFn(m: any, o: any) {\r\n    for (var p in m) {\r\n        if (p !== strDefault && !ObjHasOwnProperty.call(o, p)) {\r\n            __createBindingFn(o, m, p);\r\n        }\r\n    }\r\n}\r\n\r\nexport function __createBindingFn(o: any, m: any, k: any, k2?: any) {\r\n    if (k2 === undefined) {\r\n        k2 = k;\r\n    }\r\n    \r\n    if (ObjCreate) {\r\n        ObjDefineProperty(o, k2, { \r\n            enumerable: true, \r\n            get() { \r\n                return m[k]; \r\n            } \r\n        });\r\n    } else {\r\n        o[k2] = m[k];\r\n    }\r\n}\r\n\r\nexport function __valuesFn(o: any) {\r\n    var s = typeof SymbolObj === strShimFunction && SymbolObj[strIterator], m = s && o[s], i = 0;\r\n    if (m) {\r\n        return m.call(o);\r\n    }\r\n\r\n    if (o && typeof o.length === \"number\") {\r\n        return {\r\n            next () {\r\n                if (o && i >= o.length) {\r\n                    o = void 0;\r\n                }\r\n                return { value: o && o[i++], done: !o };\r\n            }\r\n        };\r\n    }\r\n\r\n    throwTypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __readFn(o: any, n: any) {\r\n    var m = typeof SymbolObj === strShimFunction && o[SymbolObj[strIterator]];\r\n    if (!m) {\r\n        return o;\r\n    }\r\n\r\n    var i = m.call(o), r, ar = [], e;\r\n    try {\r\n        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) {\r\n            ar.push(r.value);\r\n        }\r\n    } catch (error) { \r\n        e = { \r\n            error \r\n        }; \r\n    } finally {\r\n        try {\r\n            // tslint:disable-next-line:no-conditional-assignment\r\n            if (r && !r.done && (m = i[\"return\"])) {\r\n                m.call(i);\r\n            }\r\n        } finally { \r\n            if (e) {\r\n                // tslint:disable-next-line:no-unsafe-finally\r\n                throw e.error; \r\n            }\r\n        }\r\n    }\r\n    return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spreadArraysFn() {\r\n    var theArgs = arguments;\r\n    // Calculate new total size\r\n    for (var s = 0, i = 0, il = theArgs.length; i < il; i++) {\r\n        s += theArgs[i].length;\r\n    }\r\n\r\n    // Create new full array\r\n    for (var r = Array(s), k = 0, i = 0; i < il; i++) {\r\n        for (var a = theArgs[i], j = 0, jl = a.length; j < jl; j++, k++) {\r\n            r[k] = a[j];\r\n        }\r\n    }\r\n\r\n    return r;\r\n}\r\n\r\nexport function __spreadArrayFn(to: any, from: any) {\r\n    for (var i = 0, il = from.length, j = to.length; i < il; i++, j++) {\r\n        to[j] = from[i];\r\n    }\r\n\r\n    return to;\r\n}\r\n\r\nexport function __makeTemplateObjectFn(cooked: any, raw: any) {\r\n    if (ObjDefineProperty) { \r\n        ObjDefineProperty(cooked, \"raw\", { value: raw }); \r\n    } else { \r\n        cooked.raw = raw; \r\n    }\r\n\r\n    return cooked;\r\n};\r\n\r\nexport function __importStarFn(mod: any) {\r\n    if (mod && mod.__esModule) {\r\n        return mod;\r\n    }\r\n\r\n    var result = {};\r\n    if (mod != null) {\r\n        for (var k in mod) {\r\n            if (k !== strDefault && Object.prototype.hasOwnProperty.call(mod, k)) {\r\n                __createBindingFn(result, mod, k);\r\n            }\r\n        }\r\n    }\r\n\r\n    // Set default module\r\n    if (ObjCreate) {\r\n        ObjDefineProperty( result, strDefault, { enumerable: true, value: mod });\r\n    } else {\r\n        result[strDefault] = mod;\r\n    }    \r\n\r\n    return result;\r\n};\r\n\r\nexport function __importDefaultFn(mod:any) {\r\n    return (mod && mod.__esModule) ? mod : { strDefault: mod };\r\n}\r\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\nif (process.env.NODE_ENV !== 'production') {\n  var ReactIs = require('react-is');\n\n  // By explicitly using `prop-types` you are opting into new development behavior.\n  // http://fb.me/prop-types-in-prod\n  var throwOnDirectAccess = true;\n  module.exports = require('./factoryWithTypeCheckers')(ReactIs.isElement, throwOnDirectAccess);\n} else {\n  // By explicitly using `prop-types` you are opting into new production behavior.\n  // http://fb.me/prop-types-in-prod\n  module.exports = require('./factoryWithThrowingShims')();\n}\n","var castPath = require('./_castPath'),\n    isArguments = require('./isArguments'),\n    isArray = require('./isArray'),\n    isIndex = require('./_isIndex'),\n    isLength = require('./isLength'),\n    toKey = require('./_toKey');\n\n/**\n * Checks if `path` exists on `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @param {Function} hasFunc The function to check properties.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n */\nfunction hasPath(object, path, hasFunc) {\n  path = castPath(path, object);\n\n  var index = -1,\n      length = path.length,\n      result = false;\n\n  while (++index < length) {\n    var key = toKey(path[index]);\n    if (!(result = object != null && hasFunc(object, key))) {\n      break;\n    }\n    object = object[key];\n  }\n  if (result || ++index != length) {\n    return result;\n  }\n  length = object == null ? 0 : object.length;\n  return !!length && isLength(length) && isIndex(key, length) &&\n    (isArray(object) || isArguments(object));\n}\n\nmodule.exports = hasPath;\n","var isArray = require('./isArray'),\n    isKey = require('./_isKey'),\n    stringToPath = require('./_stringToPath'),\n    toString = require('./toString');\n\n/**\n * Casts `value` to a path array if it's not one.\n *\n * @private\n * @param {*} value The value to inspect.\n * @param {Object} [object] The object to query keys on.\n * @returns {Array} Returns the cast property path array.\n */\nfunction castPath(value, object) {\n  if (isArray(value)) {\n    return value;\n  }\n  return isKey(value, object) ? [value] : stringToPath(toString(value));\n}\n\nmodule.exports = castPath;\n","/** Detect free variable `global` from Node.js. */\nvar freeGlobal = typeof global == 'object' && global && global.Object === Object && global;\n\nmodule.exports = freeGlobal;\n","var baseGetTag = require('./_baseGetTag'),\n    isObject = require('./isObject');\n\n/** `Object#toString` result references. */\nvar asyncTag = '[object AsyncFunction]',\n    funcTag = '[object Function]',\n    genTag = '[object GeneratorFunction]',\n    proxyTag = '[object Proxy]';\n\n/**\n * Checks if `value` is classified as a `Function` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a function, else `false`.\n * @example\n *\n * _.isFunction(_);\n * // => true\n *\n * _.isFunction(/abc/);\n * // => false\n */\nfunction isFunction(value) {\n  if (!isObject(value)) {\n    return false;\n  }\n  // The use of `Object#toString` avoids issues with the `typeof` operator\n  // in Safari 9 which returns 'object' for typed arrays and other constructors.\n  var tag = baseGetTag(value);\n  return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;\n}\n\nmodule.exports = isFunction;\n","/** Used for built-in method references. */\nvar funcProto = Function.prototype;\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = funcProto.toString;\n\n/**\n * Converts `func` to its source code.\n *\n * @private\n * @param {Function} func The function to convert.\n * @returns {string} Returns the source code.\n */\nfunction toSource(func) {\n  if (func != null) {\n    try {\n      return funcToString.call(func);\n    } catch (e) {}\n    try {\n      return (func + '');\n    } catch (e) {}\n  }\n  return '';\n}\n\nmodule.exports = toSource;\n","/**\n * Performs a\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * comparison between two values to determine if they are equivalent.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'a': 1 };\n * var other = { 'a': 1 };\n *\n * _.eq(object, object);\n * // => true\n *\n * _.eq(object, other);\n * // => false\n *\n * _.eq('a', 'a');\n * // => true\n *\n * _.eq('a', Object('a'));\n * // => false\n *\n * _.eq(NaN, NaN);\n * // => true\n */\nfunction eq(value, other) {\n  return value === other || (value !== value && other !== other);\n}\n\nmodule.exports = eq;\n","var baseIsArguments = require('./_baseIsArguments'),\n    isObjectLike = require('./isObjectLike');\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/** Built-in value references. */\nvar propertyIsEnumerable = objectProto.propertyIsEnumerable;\n\n/**\n * Checks if `value` is likely an `arguments` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n *  else `false`.\n * @example\n *\n * _.isArguments(function() { return arguments; }());\n * // => true\n *\n * _.isArguments([1, 2, 3]);\n * // => false\n */\nvar isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {\n  return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&\n    !propertyIsEnumerable.call(value, 'callee');\n};\n\nmodule.exports = isArguments;\n","/** Used as references for various `Number` constants. */\nvar MAX_SAFE_INTEGER = 9007199254740991;\n\n/** Used to detect unsigned integer values. */\nvar reIsUint = /^(?:0|[1-9]\\d*)$/;\n\n/**\n * Checks if `value` is a valid array-like index.\n *\n * @private\n * @param {*} value The value to check.\n * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.\n * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.\n */\nfunction isIndex(value, length) {\n  var type = typeof value;\n  length = length == null ? MAX_SAFE_INTEGER : length;\n\n  return !!length &&\n    (type == 'number' ||\n      (type != 'symbol' && reIsUint.test(value))) &&\n        (value > -1 && value % 1 == 0 && value < length);\n}\n\nmodule.exports = isIndex;\n","var defineProperty = require('./_defineProperty');\n\n/**\n * The base implementation of `assignValue` and `assignMergeValue` without\n * value checks.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\nfunction baseAssignValue(object, key, value) {\n  if (key == '__proto__' && defineProperty) {\n    defineProperty(object, key, {\n      'configurable': true,\n      'enumerable': true,\n      'value': value,\n      'writable': true\n    });\n  } else {\n    object[key] = value;\n  }\n}\n\nmodule.exports = baseAssignValue;\n","var baseFor = require('./_baseFor'),\n    keys = require('./keys');\n\n/**\n * The base implementation of `_.forOwn` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Object} Returns `object`.\n */\nfunction baseForOwn(object, iteratee) {\n  return object && baseFor(object, iteratee, keys);\n}\n\nmodule.exports = baseForOwn;\n","var root = require('./_root'),\n    stubFalse = require('./stubFalse');\n\n/** Detect free variable `exports`. */\nvar freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;\n\n/** Detect free variable `module`. */\nvar freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;\n\n/** Detect the popular CommonJS extension `module.exports`. */\nvar moduleExports = freeModule && freeModule.exports === freeExports;\n\n/** Built-in value references. */\nvar Buffer = moduleExports ? root.Buffer : undefined;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined;\n\n/**\n * Checks if `value` is a buffer.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.\n * @example\n *\n * _.isBuffer(new Buffer(2));\n * // => true\n *\n * _.isBuffer(new Uint8Array(2));\n * // => false\n */\nvar isBuffer = nativeIsBuffer || stubFalse;\n\nmodule.exports = isBuffer;\n","var baseIsTypedArray = require('./_baseIsTypedArray'),\n    baseUnary = require('./_baseUnary'),\n    nodeUtil = require('./_nodeUtil');\n\n/* Node.js helper references. */\nvar nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;\n\n/**\n * Checks if `value` is classified as a typed array.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n * @example\n *\n * _.isTypedArray(new Uint8Array);\n * // => true\n *\n * _.isTypedArray([]);\n * // => false\n */\nvar isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;\n\nmodule.exports = isTypedArray;\n","var baseMatches = require('./_baseMatches'),\n    baseMatchesProperty = require('./_baseMatchesProperty'),\n    identity = require('./identity'),\n    isArray = require('./isArray'),\n    property = require('./property');\n\n/**\n * The base implementation of `_.iteratee`.\n *\n * @private\n * @param {*} [value=_.identity] The value to convert to an iteratee.\n * @returns {Function} Returns the iteratee.\n */\nfunction baseIteratee(value) {\n  // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.\n  // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.\n  if (typeof value == 'function') {\n    return value;\n  }\n  if (value == null) {\n    return identity;\n  }\n  if (typeof value == 'object') {\n    return isArray(value)\n      ? baseMatchesProperty(value[0], value[1])\n      : baseMatches(value);\n  }\n  return property(value);\n}\n\nmodule.exports = baseIteratee;\n","var ListCache = require('./_ListCache'),\n    stackClear = require('./_stackClear'),\n    stackDelete = require('./_stackDelete'),\n    stackGet = require('./_stackGet'),\n    stackHas = require('./_stackHas'),\n    stackSet = require('./_stackSet');\n\n/**\n * Creates a stack cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction Stack(entries) {\n  var data = this.__data__ = new ListCache(entries);\n  this.size = data.size;\n}\n\n// Add methods to `Stack`.\nStack.prototype.clear = stackClear;\nStack.prototype['delete'] = stackDelete;\nStack.prototype.get = stackGet;\nStack.prototype.has = stackHas;\nStack.prototype.set = stackSet;\n\nmodule.exports = Stack;\n","var baseIsEqualDeep = require('./_baseIsEqualDeep'),\n    isObjectLike = require('./isObjectLike');\n\n/**\n * The base implementation of `_.isEqual` which supports partial comparisons\n * and tracks traversed objects.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @param {boolean} bitmask The bitmask flags.\n *  1 - Unordered comparison\n *  2 - Partial comparison\n * @param {Function} [customizer] The function to customize comparisons.\n * @param {Object} [stack] Tracks traversed `value` and `other` objects.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n */\nfunction baseIsEqual(value, other, bitmask, customizer, stack) {\n  if (value === other) {\n    return true;\n  }\n  if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {\n    return value !== value && other !== other;\n  }\n  return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);\n}\n\nmodule.exports = baseIsEqual;\n","var SetCache = require('./_SetCache'),\n    arraySome = require('./_arraySome'),\n    cacheHas = require('./_cacheHas');\n\n/** Used to compose bitmasks for value comparisons. */\nvar COMPARE_PARTIAL_FLAG = 1,\n    COMPARE_UNORDERED_FLAG = 2;\n\n/**\n * A specialized version of `baseIsEqualDeep` for arrays with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Array} array The array to compare.\n * @param {Array} other The other array to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `array` and `other` objects.\n * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.\n */\nfunction equalArrays(array, other, bitmask, customizer, equalFunc, stack) {\n  var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n      arrLength = array.length,\n      othLength = other.length;\n\n  if (arrLength != othLength && !(isPartial && othLength > arrLength)) {\n    return false;\n  }\n  // Check that cyclic values are equal.\n  var arrStacked = stack.get(array);\n  var othStacked = stack.get(other);\n  if (arrStacked && othStacked) {\n    return arrStacked == other && othStacked == array;\n  }\n  var index = -1,\n      result = true,\n      seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;\n\n  stack.set(array, other);\n  stack.set(other, array);\n\n  // Ignore non-index properties.\n  while (++index < arrLength) {\n    var arrValue = array[index],\n        othValue = other[index];\n\n    if (customizer) {\n      var compared = isPartial\n        ? customizer(othValue, arrValue, index, other, array, stack)\n        : customizer(arrValue, othValue, index, array, other, stack);\n    }\n    if (compared !== undefined) {\n      if (compared) {\n        continue;\n      }\n      result = false;\n      break;\n    }\n    // Recursively compare arrays (susceptible to call stack limits).\n    if (seen) {\n      if (!arraySome(other, function(othValue, othIndex) {\n            if (!cacheHas(seen, othIndex) &&\n                (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {\n              return seen.push(othIndex);\n            }\n          })) {\n        result = false;\n        break;\n      }\n    } else if (!(\n          arrValue === othValue ||\n            equalFunc(arrValue, othValue, bitmask, customizer, stack)\n        )) {\n      result = false;\n      break;\n    }\n  }\n  stack['delete'](array);\n  stack['delete'](other);\n  return result;\n}\n\nmodule.exports = equalArrays;\n","var isObject = require('./isObject');\n\n/**\n * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` if suitable for strict\n *  equality comparisons, else `false`.\n */\nfunction isStrictComparable(value) {\n  return value === value && !isObject(value);\n}\n\nmodule.exports = isStrictComparable;\n","/**\n * A specialized version of `matchesProperty` for source values suitable\n * for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\nfunction matchesStrictComparable(key, srcValue) {\n  return function(object) {\n    if (object == null) {\n      return false;\n    }\n    return object[key] === srcValue &&\n      (srcValue !== undefined || (key in Object(object)));\n  };\n}\n\nmodule.exports = matchesStrictComparable;\n","var castPath = require('./_castPath'),\n    toKey = require('./_toKey');\n\n/**\n * The base implementation of `_.get` without support for default values.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @returns {*} Returns the resolved value.\n */\nfunction baseGet(object, path) {\n  path = castPath(path, object);\n\n  var index = 0,\n      length = path.length;\n\n  while (object != null && index < length) {\n    object = object[toKey(path[index++])];\n  }\n  return (index && index == length) ? object : undefined;\n}\n\nmodule.exports = baseGet;\n","var arrayReduce = require('./_arrayReduce'),\n    deburr = require('./deburr'),\n    words = require('./words');\n\n/** Used to compose unicode capture groups. */\nvar rsApos = \"['\\u2019]\";\n\n/** Used to match apostrophes. */\nvar reApos = RegExp(rsApos, 'g');\n\n/**\n * Creates a function like `_.camelCase`.\n *\n * @private\n * @param {Function} callback The function to combine each word.\n * @returns {Function} Returns the new compounder function.\n */\nfunction createCompounder(callback) {\n  return function(string) {\n    return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');\n  };\n}\n\nmodule.exports = createCompounder;\n","/** Used to compose unicode character classes. */\nvar rsAstralRange = '\\\\ud800-\\\\udfff',\n    rsComboMarksRange = '\\\\u0300-\\\\u036f',\n    reComboHalfMarksRange = '\\\\ufe20-\\\\ufe2f',\n    rsComboSymbolsRange = '\\\\u20d0-\\\\u20ff',\n    rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,\n    rsVarRange = '\\\\ufe0e\\\\ufe0f';\n\n/** Used to compose unicode capture groups. */\nvar rsZWJ = '\\\\u200d';\n\n/** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */\nvar reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboRange + rsVarRange + ']');\n\n/**\n * Checks if `string` contains Unicode symbols.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {boolean} Returns `true` if a symbol is found, else `false`.\n */\nfunction hasUnicode(string) {\n  return reHasUnicode.test(string);\n}\n\nmodule.exports = hasUnicode;\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport firebase from '@firebase/app';\nimport { FirebaseNamespace } from '@firebase/app-types';\n\nimport {\n  Firestore,\n  IndexedDbPersistenceProvider,\n  ExpFirebaseFirestore\n} from './export';\nimport { name, version } from './package.json';\nimport { configureForFirebase } from './src/config';\n\nimport './register-module';\n\n/**\n * Registers the main Firestore build with the components framework.\n * Persistence can be enabled via `firebase.firestore().enablePersistence()`.\n */\nexport function registerFirestore(instance: FirebaseNamespace): void {\n  configureForFirebase(\n    instance,\n    (app, auth) =>\n      new Firestore(\n        app,\n        new ExpFirebaseFirestore(app, auth),\n        new IndexedDbPersistenceProvider()\n      )\n  );\n  instance.registerVersion(name, version);\n}\n\nregisterFirestore(firebase);\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseApp, FirebaseNamespace } from '@firebase/app-types';\nimport { _FirebaseNamespace } from '@firebase/app-types/private';\nimport { FirebaseAuthInternalName } from '@firebase/auth-interop-types';\nimport { Component, ComponentType, Provider } from '@firebase/component';\n\nimport {\n  CACHE_SIZE_UNLIMITED,\n  CollectionReference,\n  DocumentReference,\n  DocumentSnapshot,\n  Firestore,\n  Query,\n  QueryDocumentSnapshot,\n  QuerySnapshot,\n  Transaction,\n  WriteBatch,\n  setLogLevel,\n  Blob,\n  FieldPath,\n  GeoPoint,\n  Timestamp,\n  FieldValue\n} from '../export';\n\nconst firestoreNamespace = {\n  Firestore,\n  GeoPoint,\n  Timestamp,\n  Blob,\n  Transaction,\n  WriteBatch,\n  DocumentReference,\n  DocumentSnapshot,\n  Query,\n  QueryDocumentSnapshot,\n  QuerySnapshot,\n  CollectionReference,\n  FieldPath,\n  FieldValue,\n  setLogLevel,\n  CACHE_SIZE_UNLIMITED\n};\n\n/**\n * Configures Firestore as part of the Firebase SDK by calling registerService.\n *\n * @param firebase - The FirebaseNamespace to register Firestore with\n * @param firestoreFactory - A factory function that returns a new Firestore\n *    instance.\n */\nexport function configureForFirebase(\n  firebase: FirebaseNamespace,\n  firestoreFactory: (\n    app: FirebaseApp,\n    auth: Provider<FirebaseAuthInternalName>\n  ) => Firestore\n): void {\n  (firebase as _FirebaseNamespace).INTERNAL.registerComponent(\n    new Component(\n      'firestore',\n      container => {\n        const app = container.getProvider('app').getImmediate()!;\n        return firestoreFactory(app, container.getProvider('auth-internal'));\n      },\n      ComponentType.PUBLIC\n    ).setServiceProps({ ...firestoreNamespace })\n  );\n}\n","'use strict';\n\nfunction _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }\n\nvar React = require('react');\nvar React__default = _interopDefault(React);\n\nfunction _defineProperty(obj, key, value) {\n  if (key in obj) {\n    Object.defineProperty(obj, key, {\n      value: value,\n      enumerable: true,\n      configurable: true,\n      writable: true\n    });\n  } else {\n    obj[key] = value;\n  }\n\n  return obj;\n}\n\nfunction _inheritsLoose(subClass, superClass) {\n  subClass.prototype = Object.create(superClass.prototype);\n  subClass.prototype.constructor = subClass;\n  subClass.__proto__ = superClass;\n}\n\nvar canUseDOM = !!(typeof window !== 'undefined' && window.document && window.document.createElement);\nfunction withSideEffect(reducePropsToState, handleStateChangeOnClient, mapStateOnServer) {\n  if (typeof reducePropsToState !== 'function') {\n    throw new Error('Expected reducePropsToState to be a function.');\n  }\n\n  if (typeof handleStateChangeOnClient !== 'function') {\n    throw new Error('Expected handleStateChangeOnClient to be a function.');\n  }\n\n  if (typeof mapStateOnServer !== 'undefined' && typeof mapStateOnServer !== 'function') {\n    throw new Error('Expected mapStateOnServer to either be undefined or a function.');\n  }\n\n  function getDisplayName(WrappedComponent) {\n    return WrappedComponent.displayName || WrappedComponent.name || 'Component';\n  }\n\n  return function wrap(WrappedComponent) {\n    if (typeof WrappedComponent !== 'function') {\n      throw new Error('Expected WrappedComponent to be a React component.');\n    }\n\n    var mountedInstances = [];\n    var state;\n\n    function emitChange() {\n      state = reducePropsToState(mountedInstances.map(function (instance) {\n        return instance.props;\n      }));\n\n      if (SideEffect.canUseDOM) {\n        handleStateChangeOnClient(state);\n      } else if (mapStateOnServer) {\n        state = mapStateOnServer(state);\n      }\n    }\n\n    var SideEffect = /*#__PURE__*/function (_PureComponent) {\n      _inheritsLoose(SideEffect, _PureComponent);\n\n      function SideEffect() {\n        return _PureComponent.apply(this, arguments) || this;\n      }\n\n      // Try to use displayName of wrapped component\n      // Expose canUseDOM so tests can monkeypatch it\n      SideEffect.peek = function peek() {\n        return state;\n      };\n\n      SideEffect.rewind = function rewind() {\n        if (SideEffect.canUseDOM) {\n          throw new Error('You may only call rewind() on the server. Call peek() to read the current state.');\n        }\n\n        var recordedState = state;\n        state = undefined;\n        mountedInstances = [];\n        return recordedState;\n      };\n\n      var _proto = SideEffect.prototype;\n\n      _proto.UNSAFE_componentWillMount = function UNSAFE_componentWillMount() {\n        mountedInstances.push(this);\n        emitChange();\n      };\n\n      _proto.componentDidUpdate = function componentDidUpdate() {\n        emitChange();\n      };\n\n      _proto.componentWillUnmount = function componentWillUnmount() {\n        var index = mountedInstances.indexOf(this);\n        mountedInstances.splice(index, 1);\n        emitChange();\n      };\n\n      _proto.render = function render() {\n        return /*#__PURE__*/React__default.createElement(WrappedComponent, this.props);\n      };\n\n      return SideEffect;\n    }(React.PureComponent);\n\n    _defineProperty(SideEffect, \"displayName\", \"SideEffect(\" + getDisplayName(WrappedComponent) + \")\");\n\n    _defineProperty(SideEffect, \"canUseDOM\", canUseDOM);\n\n    return SideEffect;\n  };\n}\n\nmodule.exports = withSideEffect;\n","/* global Map:readonly, Set:readonly, ArrayBuffer:readonly */\n\nvar hasElementType = typeof Element !== 'undefined';\nvar hasMap = typeof Map === 'function';\nvar hasSet = typeof Set === 'function';\nvar hasArrayBuffer = typeof ArrayBuffer === 'function' && !!ArrayBuffer.isView;\n\n// Note: We **don't** need `envHasBigInt64Array` in fde es6/index.js\n\nfunction equal(a, b) {\n  // START: fast-deep-equal es6/index.js 3.1.1\n  if (a === b) return true;\n\n  if (a && b && typeof a == 'object' && typeof b == 'object') {\n    if (a.constructor !== b.constructor) return false;\n\n    var length, i, keys;\n    if (Array.isArray(a)) {\n      length = a.length;\n      if (length != b.length) return false;\n      for (i = length; i-- !== 0;)\n        if (!equal(a[i], b[i])) return false;\n      return true;\n    }\n\n    // START: Modifications:\n    // 1. Extra `has<Type> &&` helpers in initial condition allow es6 code\n    //    to co-exist with es5.\n    // 2. Replace `for of` with es5 compliant iteration using `for`.\n    //    Basically, take:\n    //\n    //    ```js\n    //    for (i of a.entries())\n    //      if (!b.has(i[0])) return false;\n    //    ```\n    //\n    //    ... and convert to:\n    //\n    //    ```js\n    //    it = a.entries();\n    //    while (!(i = it.next()).done)\n    //      if (!b.has(i.value[0])) return false;\n    //    ```\n    //\n    //    **Note**: `i` access switches to `i.value`.\n    var it;\n    if (hasMap && (a instanceof Map) && (b instanceof Map)) {\n      if (a.size !== b.size) return false;\n      it = a.entries();\n      while (!(i = it.next()).done)\n        if (!b.has(i.value[0])) return false;\n      it = a.entries();\n      while (!(i = it.next()).done)\n        if (!equal(i.value[1], b.get(i.value[0]))) return false;\n      return true;\n    }\n\n    if (hasSet && (a instanceof Set) && (b instanceof Set)) {\n      if (a.size !== b.size) return false;\n      it = a.entries();\n      while (!(i = it.next()).done)\n        if (!b.has(i.value[0])) return false;\n      return true;\n    }\n    // END: Modifications\n\n    if (hasArrayBuffer && ArrayBuffer.isView(a) && ArrayBuffer.isView(b)) {\n      length = a.length;\n      if (length != b.length) return false;\n      for (i = length; i-- !== 0;)\n        if (a[i] !== b[i]) return false;\n      return true;\n    }\n\n    if (a.constructor === RegExp) return a.source === b.source && a.flags === b.flags;\n    if (a.valueOf !== Object.prototype.valueOf) return a.valueOf() === b.valueOf();\n    if (a.toString !== Object.prototype.toString) return a.toString() === b.toString();\n\n    keys = Object.keys(a);\n    length = keys.length;\n    if (length !== Object.keys(b).length) return false;\n\n    for (i = length; i-- !== 0;)\n      if (!Object.prototype.hasOwnProperty.call(b, keys[i])) return false;\n    // END: fast-deep-equal\n\n    // START: react-fast-compare\n    // custom handling for DOM elements\n    if (hasElementType && a instanceof Element) return false;\n\n    // custom handling for React/Preact\n    for (i = length; i-- !== 0;) {\n      if ((keys[i] === '_owner' || keys[i] === '__v' || keys[i] === '__o') && a.$$typeof) {\n        // React-specific: avoid traversing React elements' _owner\n        // Preact-specific: avoid traversing Preact elements' __v and __o\n        //    __v = $_original / $_vnode\n        //    __o = $_owner\n        // These properties contain circular references and are not needed when\n        // comparing the actual elements (and not their owners)\n        // .$$typeof and ._store on just reasonable markers of elements\n\n        continue;\n      }\n\n      // all other properties should be traversed as usual\n      if (!equal(a[keys[i]], b[keys[i]])) return false;\n    }\n    // END: react-fast-compare\n\n    // START: fast-deep-equal\n    return true;\n  }\n\n  return a !== a && b !== b;\n}\n// end fast-deep-equal\n\nmodule.exports = function isEqual(a, b) {\n  try {\n    return equal(a, b);\n  } catch (error) {\n    if (((error.message || '').match(/stack|recursion/i))) {\n      // warn on circular references, don't crash\n      // browsers give this different errors name and messages:\n      // chrome/safari: \"RangeError\", \"Maximum call stack size exceeded\"\n      // firefox: \"InternalError\", too much recursion\"\n      // edge: \"Error\", \"Out of stack space\"\n      console.warn('react-fast-compare cannot handle circular refs');\n      return false;\n    }\n    // some other error. we should definitely know about these\n    throw error;\n  }\n};\n","export default function _setPrototypeOf(o, p) {\n  _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {\n    o.__proto__ = p;\n    return o;\n  };\n\n  return _setPrototypeOf(o, p);\n}","import React, { Component } from 'react';\nimport _inheritsLoose from '@babel/runtime/helpers/esm/inheritsLoose';\nimport PropTypes from 'prop-types';\nimport warning from 'tiny-warning';\n\nvar MAX_SIGNED_31_BIT_INT = 1073741823;\nvar commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : {};\n\nfunction getUniqueId() {\n  var key = '__global_unique_id__';\n  return commonjsGlobal[key] = (commonjsGlobal[key] || 0) + 1;\n}\n\nfunction objectIs(x, y) {\n  if (x === y) {\n    return x !== 0 || 1 / x === 1 / y;\n  } else {\n    return x !== x && y !== y;\n  }\n}\n\nfunction createEventEmitter(value) {\n  var handlers = [];\n  return {\n    on: function on(handler) {\n      handlers.push(handler);\n    },\n    off: function off(handler) {\n      handlers = handlers.filter(function (h) {\n        return h !== handler;\n      });\n    },\n    get: function get() {\n      return value;\n    },\n    set: function set(newValue, changedBits) {\n      value = newValue;\n      handlers.forEach(function (handler) {\n        return handler(value, changedBits);\n      });\n    }\n  };\n}\n\nfunction onlyChild(children) {\n  return Array.isArray(children) ? children[0] : children;\n}\n\nfunction createReactContext(defaultValue, calculateChangedBits) {\n  var _Provider$childContex, _Consumer$contextType;\n\n  var contextProp = '__create-react-context-' + getUniqueId() + '__';\n\n  var Provider = /*#__PURE__*/function (_Component) {\n    _inheritsLoose(Provider, _Component);\n\n    function Provider() {\n      var _this;\n\n      _this = _Component.apply(this, arguments) || this;\n      _this.emitter = createEventEmitter(_this.props.value);\n      return _this;\n    }\n\n    var _proto = Provider.prototype;\n\n    _proto.getChildContext = function getChildContext() {\n      var _ref;\n\n      return _ref = {}, _ref[contextProp] = this.emitter, _ref;\n    };\n\n    _proto.componentWillReceiveProps = function componentWillReceiveProps(nextProps) {\n      if (this.props.value !== nextProps.value) {\n        var oldValue = this.props.value;\n        var newValue = nextProps.value;\n        var changedBits;\n\n        if (objectIs(oldValue, newValue)) {\n          changedBits = 0;\n        } else {\n          changedBits = typeof calculateChangedBits === 'function' ? calculateChangedBits(oldValue, newValue) : MAX_SIGNED_31_BIT_INT;\n\n          if (process.env.NODE_ENV !== 'production') {\n            warning((changedBits & MAX_SIGNED_31_BIT_INT) === changedBits, 'calculateChangedBits: Expected the return value to be a ' + '31-bit integer. Instead received: ' + changedBits);\n          }\n\n          changedBits |= 0;\n\n          if (changedBits !== 0) {\n            this.emitter.set(nextProps.value, changedBits);\n          }\n        }\n      }\n    };\n\n    _proto.render = function render() {\n      return this.props.children;\n    };\n\n    return Provider;\n  }(Component);\n\n  Provider.childContextTypes = (_Provider$childContex = {}, _Provider$childContex[contextProp] = PropTypes.object.isRequired, _Provider$childContex);\n\n  var Consumer = /*#__PURE__*/function (_Component2) {\n    _inheritsLoose(Consumer, _Component2);\n\n    function Consumer() {\n      var _this2;\n\n      _this2 = _Component2.apply(this, arguments) || this;\n      _this2.state = {\n        value: _this2.getValue()\n      };\n\n      _this2.onUpdate = function (newValue, changedBits) {\n        var observedBits = _this2.observedBits | 0;\n\n        if ((observedBits & changedBits) !== 0) {\n          _this2.setState({\n            value: _this2.getValue()\n          });\n        }\n      };\n\n      return _this2;\n    }\n\n    var _proto2 = Consumer.prototype;\n\n    _proto2.componentWillReceiveProps = function componentWillReceiveProps(nextProps) {\n      var observedBits = nextProps.observedBits;\n      this.observedBits = observedBits === undefined || observedBits === null ? MAX_SIGNED_31_BIT_INT : observedBits;\n    };\n\n    _proto2.componentDidMount = function componentDidMount() {\n      if (this.context[contextProp]) {\n        this.context[contextProp].on(this.onUpdate);\n      }\n\n      var observedBits = this.props.observedBits;\n      this.observedBits = observedBits === undefined || observedBits === null ? MAX_SIGNED_31_BIT_INT : observedBits;\n    };\n\n    _proto2.componentWillUnmount = function componentWillUnmount() {\n      if (this.context[contextProp]) {\n        this.context[contextProp].off(this.onUpdate);\n      }\n    };\n\n    _proto2.getValue = function getValue() {\n      if (this.context[contextProp]) {\n        return this.context[contextProp].get();\n      } else {\n        return defaultValue;\n      }\n    };\n\n    _proto2.render = function render() {\n      return onlyChild(this.props.children)(this.state.value);\n    };\n\n    return Consumer;\n  }(Component);\n\n  Consumer.contextTypes = (_Consumer$contextType = {}, _Consumer$contextType[contextProp] = PropTypes.object, _Consumer$contextType);\n  return {\n    Provider: Provider,\n    Consumer: Consumer\n  };\n}\n\nvar index = React.createContext || createReactContext;\n\nexport default index;\n","/*! *****************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise */\r\n\r\nvar extendStatics = function(d, b) {\r\n    extendStatics = Object.setPrototypeOf ||\r\n        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };\r\n    return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n    extendStatics(d, b);\r\n    function __() { this.constructor = d; }\r\n    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n}\r\n\r\nexport var __assign = function() {\r\n    __assign = Object.assign || function __assign(t) {\r\n        for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n            s = arguments[i];\r\n            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n        }\r\n        return t;\r\n    }\r\n    return __assign.apply(this, arguments);\r\n}\r\n\r\nexport function __rest(s, e) {\r\n    var t = {};\r\n    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\r\n        t[p] = s[p];\r\n    if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\r\n        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\r\n            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\r\n                t[p[i]] = s[p[i]];\r\n        }\r\n    return t;\r\n}\r\n\r\nexport function __decorate(decorators, target, key, desc) {\r\n    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\r\n    if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\r\n    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n    return c > 3 && r && Object.defineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __param(paramIndex, decorator) {\r\n    return function (target, key) { decorator(target, key, paramIndex); }\r\n}\r\n\r\nexport function __metadata(metadataKey, metadataValue) {\r\n    if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\r\n}\r\n\r\nexport function __awaiter(thisArg, _arguments, P, generator) {\r\n    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\r\n    return new (P || (P = Promise))(function (resolve, reject) {\r\n        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n        function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\r\n        step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n    });\r\n}\r\n\r\nexport function __generator(thisArg, body) {\r\n    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\r\n    return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n    function verb(n) { return function (v) { return step([n, v]); }; }\r\n    function step(op) {\r\n        if (f) throw new TypeError(\"Generator is already executing.\");\r\n        while (_) try {\r\n            if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\r\n            if (y = 0, t) op = [op[0] & 2, t.value];\r\n            switch (op[0]) {\r\n                case 0: case 1: t = op; break;\r\n                case 4: _.label++; return { value: op[1], done: false };\r\n                case 5: _.label++; y = op[1]; op = [0]; continue;\r\n                case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n                default:\r\n                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n                    if (t[2]) _.ops.pop();\r\n                    _.trys.pop(); continue;\r\n            }\r\n            op = body.call(thisArg, _);\r\n        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n    }\r\n}\r\n\r\nexport function __createBinding(o, m, k, k2) {\r\n    if (k2 === undefined) k2 = k;\r\n    o[k2] = m[k];\r\n}\r\n\r\nexport function __exportStar(m, exports) {\r\n    for (var p in m) if (p !== \"default\" && !exports.hasOwnProperty(p)) exports[p] = m[p];\r\n}\r\n\r\nexport function __values(o) {\r\n    var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n    if (m) return m.call(o);\r\n    if (o && typeof o.length === \"number\") return {\r\n        next: function () {\r\n            if (o && i >= o.length) o = void 0;\r\n            return { value: o && o[i++], done: !o };\r\n        }\r\n    };\r\n    throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n    var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n    if (!m) return o;\r\n    var i = m.call(o), r, ar = [], e;\r\n    try {\r\n        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n    }\r\n    catch (error) { e = { error: error }; }\r\n    finally {\r\n        try {\r\n            if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n        }\r\n        finally { if (e) throw e.error; }\r\n    }\r\n    return ar;\r\n}\r\n\r\nexport function __spread() {\r\n    for (var ar = [], i = 0; i < arguments.length; i++)\r\n        ar = ar.concat(__read(arguments[i]));\r\n    return ar;\r\n}\r\n\r\nexport function __spreadArrays() {\r\n    for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n    for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n        for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n            r[k] = a[j];\r\n    return r;\r\n};\r\n\r\nexport function __await(v) {\r\n    return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n    if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n    var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n    return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n    function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n    function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n    function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n    function fulfill(value) { resume(\"next\", value); }\r\n    function reject(value) { resume(\"throw\", value); }\r\n    function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n    var i, p;\r\n    return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n    function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: n === \"return\" } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n    if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n    var m = o[Symbol.asyncIterator], i;\r\n    return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n    function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n    function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n    if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n    return cooked;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n    if (mod && mod.__esModule) return mod;\r\n    var result = {};\r\n    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];\r\n    result.default = mod;\r\n    return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n    return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, privateMap) {\r\n    if (!privateMap.has(receiver)) {\r\n        throw new TypeError(\"attempted to get private field on non-instance\");\r\n    }\r\n    return privateMap.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, privateMap, value) {\r\n    if (!privateMap.has(receiver)) {\r\n        throw new TypeError(\"attempted to set private field on non-instance\");\r\n    }\r\n    privateMap.set(receiver, value);\r\n    return value;\r\n}\r\n","var capitalize = require('./capitalize'),\n    createCompounder = require('./_createCompounder');\n\n/**\n * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the camel cased string.\n * @example\n *\n * _.camelCase('Foo Bar');\n * // => 'fooBar'\n *\n * _.camelCase('--foo-bar--');\n * // => 'fooBar'\n *\n * _.camelCase('__FOO_BAR__');\n * // => 'fooBar'\n */\nvar camelCase = createCompounder(function(result, word, index) {\n  word = word.toLowerCase();\n  return result + (index ? capitalize(word) : word);\n});\n\nmodule.exports = camelCase;\n","var baseAssignValue = require('./_baseAssignValue'),\n    baseForOwn = require('./_baseForOwn'),\n    baseIteratee = require('./_baseIteratee');\n\n/**\n * The opposite of `_.mapValues`; this method creates an object with the\n * same values as `object` and keys generated by running each own enumerable\n * string keyed property of `object` thru `iteratee`. The iteratee is invoked\n * with three arguments: (value, key, object).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns the new mapped object.\n * @see _.mapValues\n * @example\n *\n * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {\n *   return key + value;\n * });\n * // => { 'a1': 1, 'b2': 2 }\n */\nfunction mapKeys(object, iteratee) {\n  var result = {};\n  iteratee = baseIteratee(iteratee, 3);\n\n  baseForOwn(object, function(value, key, object) {\n    baseAssignValue(result, iteratee(value, key, object), value);\n  });\n  return result;\n}\n\nmodule.exports = mapKeys;\n","\n/**\n * Topological sorting function\n *\n * @param {Array} edges\n * @returns {Array}\n */\n\nmodule.exports = function(edges) {\n  return toposort(uniqueNodes(edges), edges)\n}\n\nmodule.exports.array = toposort\n\nfunction toposort(nodes, edges) {\n  var cursor = nodes.length\n    , sorted = new Array(cursor)\n    , visited = {}\n    , i = cursor\n    // Better data structures make algorithm much faster.\n    , outgoingEdges = makeOutgoingEdges(edges)\n    , nodesHash = makeNodesHash(nodes)\n\n  // check for unknown nodes\n  edges.forEach(function(edge) {\n    if (!nodesHash.has(edge[0]) || !nodesHash.has(edge[1])) {\n      throw new Error('Unknown node. There is an unknown node in the supplied edges.')\n    }\n  })\n\n  while (i--) {\n    if (!visited[i]) visit(nodes[i], i, new Set())\n  }\n\n  return sorted\n\n  function visit(node, i, predecessors) {\n    if(predecessors.has(node)) {\n      var nodeRep\n      try {\n        nodeRep = \", node was:\" + JSON.stringify(node)\n      } catch(e) {\n        nodeRep = \"\"\n      }\n      throw new Error('Cyclic dependency' + nodeRep)\n    }\n\n    if (!nodesHash.has(node)) {\n      throw new Error('Found unknown node. Make sure to provided all involved nodes. Unknown node: '+JSON.stringify(node))\n    }\n\n    if (visited[i]) return;\n    visited[i] = true\n\n    var outgoing = outgoingEdges.get(node) || new Set()\n    outgoing = Array.from(outgoing)\n\n    if (i = outgoing.length) {\n      predecessors.add(node)\n      do {\n        var child = outgoing[--i]\n        visit(child, nodesHash.get(child), predecessors)\n      } while (i)\n      predecessors.delete(node)\n    }\n\n    sorted[--cursor] = node\n  }\n}\n\nfunction uniqueNodes(arr){\n  var res = new Set()\n  for (var i = 0, len = arr.length; i < len; i++) {\n    var edge = arr[i]\n    res.add(edge[0])\n    res.add(edge[1])\n  }\n  return Array.from(res)\n}\n\nfunction makeOutgoingEdges(arr){\n  var edges = new Map()\n  for (var i = 0, len = arr.length; i < len; i++) {\n    var edge = arr[i]\n    if (!edges.has(edge[0])) edges.set(edge[0], new Set())\n    if (!edges.has(edge[1])) edges.set(edge[1], new Set())\n    edges.get(edge[0]).add(edge[1])\n  }\n  return edges\n}\n\nfunction makeNodesHash(arr){\n  var res = new Map()\n  for (var i = 0, len = arr.length; i < len; i++) {\n    res.set(arr[i], i)\n  }\n  return res\n}\n","/**\n * This method returns `false`.\n *\n * @static\n * @memberOf _\n * @since 4.13.0\n * @category Util\n * @returns {boolean} Returns `false`.\n * @example\n *\n * _.times(2, _.stubFalse);\n * // => [false, false]\n */\nfunction stubFalse() {\n  return false;\n}\n\nexport default stubFalse;\n","import root from './_root.js';\n\n/** Detect free variable `exports`. */\nvar freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;\n\n/** Detect free variable `module`. */\nvar freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;\n\n/** Detect the popular CommonJS extension `module.exports`. */\nvar moduleExports = freeModule && freeModule.exports === freeExports;\n\n/** Built-in value references. */\nvar Buffer = moduleExports ? root.Buffer : undefined,\n    allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined;\n\n/**\n * Creates a clone of  `buffer`.\n *\n * @private\n * @param {Buffer} buffer The buffer to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Buffer} Returns the cloned buffer.\n */\nfunction cloneBuffer(buffer, isDeep) {\n  if (isDeep) {\n    return buffer.slice();\n  }\n  var length = buffer.length,\n      result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);\n\n  buffer.copy(result);\n  return result;\n}\n\nexport default cloneBuffer;\n","export default typeof window !== 'undefined' && typeof document !== 'undefined' && typeof navigator !== 'undefined';\n","import isBrowser from './isBrowser';\n\nconst timeoutDuration = (function(){\n  const longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\n  for (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n    if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n      return 1;\n    }\n  }\n  return 0;\n}());\n\nexport function microtaskDebounce(fn) {\n  let called = false\n  return () => {\n    if (called) {\n      return\n    }\n    called = true\n    window.Promise.resolve().then(() => {\n      called = false\n      fn()\n    })\n  }\n}\n\nexport function taskDebounce(fn) {\n  let scheduled = false;\n  return () => {\n    if (!scheduled) {\n      scheduled = true;\n      setTimeout(() => {\n        scheduled = false;\n        fn();\n      }, timeoutDuration);\n    }\n  };\n}\n\nconst supportsMicroTasks = isBrowser && window.Promise\n\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nexport default (supportsMicroTasks\n  ? microtaskDebounce\n  : taskDebounce);\n","/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nexport default function isFunction(functionToCheck) {\n  const getType = {};\n  return (\n    functionToCheck &&\n    getType.toString.call(functionToCheck) === '[object Function]'\n  );\n}\n","/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nexport default function getStyleComputedProperty(element, property) {\n  if (element.nodeType !== 1) {\n    return [];\n  }\n  // NOTE: 1 DOM access here\n  const window = element.ownerDocument.defaultView;\n  const css = window.getComputedStyle(element, null);\n  return property ? css[property] : css;\n}\n","/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nexport default function getParentNode(element) {\n  if (element.nodeName === 'HTML') {\n    return element;\n  }\n  return element.parentNode || element.host;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nexport default function getScrollParent(element) {\n  // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n  if (!element) {\n    return document.body\n  }\n\n  switch (element.nodeName) {\n    case 'HTML':\n    case 'BODY':\n      return element.ownerDocument.body\n    case '#document':\n      return element.body\n  }\n\n  // Firefox want us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);\n  if (/(auto|scroll|overlay)/.test(overflow + overflowY + overflowX)) {\n    return element;\n  }\n\n  return getScrollParent(getParentNode(element));\n}\n","/**\n * Returns the reference node of the reference object, or the reference object itself.\n * @method\n * @memberof Popper.Utils\n * @param {Element|Object} reference - the reference element (the popper will be relative to this)\n * @returns {Element} parent\n */\nexport default function getReferenceNode(reference) {\n  return reference && reference.referenceNode ? reference.referenceNode : reference;\n}\n","import isBrowser from './isBrowser';\n\nconst isIE11 = isBrowser && !!(window.MSInputMethodContext && document.documentMode);\nconst isIE10 = isBrowser && /MSIE 10/.test(navigator.userAgent);\n\n/**\n * Determines if the browser is Internet Explorer\n * @method\n * @memberof Popper.Utils\n * @param {Number} version to check\n * @returns {Boolean} isIE\n */\nexport default function isIE(version) {\n  if (version === 11) {\n    return isIE11;\n  }\n  if (version === 10) {\n    return isIE10;\n  }\n  return isIE11 || isIE10;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport isIE from './isIE';\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nexport default function getOffsetParent(element) {\n  if (!element) {\n    return document.documentElement;\n  }\n\n  const noOffsetParent = isIE(10) ? document.body : null;\n\n  // NOTE: 1 DOM access here\n  let offsetParent = element.offsetParent || null;\n  // Skip hidden elements which don't have an offsetParent\n  while (offsetParent === noOffsetParent && element.nextElementSibling) {\n    offsetParent = (element = element.nextElementSibling).offsetParent;\n  }\n\n  const nodeName = offsetParent && offsetParent.nodeName;\n\n  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n    return element ? element.ownerDocument.documentElement : document.documentElement;\n  }\n\n  // .offsetParent will return the closest TH, TD or TABLE in case\n  // no offsetParent is present, I hate this job...\n  if (\n    ['TH', 'TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 &&\n    getStyleComputedProperty(offsetParent, 'position') === 'static'\n  ) {\n    return getOffsetParent(offsetParent);\n  }\n\n  return offsetParent;\n}\n","/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nexport default function getRoot(node) {\n  if (node.parentNode !== null) {\n    return getRoot(node.parentNode);\n  }\n\n  return node;\n}\n","import isOffsetContainer from './isOffsetContainer';\nimport getRoot from './getRoot';\nimport getOffsetParent from './getOffsetParent';\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nexport default function findCommonOffsetParent(element1, element2) {\n  // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n    return document.documentElement;\n  }\n\n  // Here we make sure to give as \"start\" the element that comes first in the DOM\n  const order =\n    element1.compareDocumentPosition(element2) &\n    Node.DOCUMENT_POSITION_FOLLOWING;\n  const start = order ? element1 : element2;\n  const end = order ? element2 : element1;\n\n  // Get common ancestor container\n  const range = document.createRange();\n  range.setStart(start, 0);\n  range.setEnd(end, 0);\n  const { commonAncestorContainer } = range;\n\n  // Both nodes are inside #document\n  if (\n    (element1 !== commonAncestorContainer &&\n      element2 !== commonAncestorContainer) ||\n    start.contains(end)\n  ) {\n    if (isOffsetContainer(commonAncestorContainer)) {\n      return commonAncestorContainer;\n    }\n\n    return getOffsetParent(commonAncestorContainer);\n  }\n\n  // one of the nodes is inside shadowDOM, find which one\n  const element1root = getRoot(element1);\n  if (element1root.host) {\n    return findCommonOffsetParent(element1root.host, element2);\n  } else {\n    return findCommonOffsetParent(element1, getRoot(element2).host);\n  }\n}\n","import getOffsetParent from './getOffsetParent';\n\nexport default function isOffsetContainer(element) {\n  const { nodeName } = element;\n  if (nodeName === 'BODY') {\n    return false;\n  }\n  return (\n    nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element\n  );\n}\n","/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nexport default function getScroll(element, side = 'top') {\n  const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n  const nodeName = element.nodeName;\n\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    const html = element.ownerDocument.documentElement;\n    const scrollingElement = element.ownerDocument.scrollingElement || html;\n    return scrollingElement[upperSide];\n  }\n\n  return element[upperSide];\n}\n","import getScroll from './getScroll';\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nexport default function includeScroll(rect, element, subtract = false) {\n  const scrollTop = getScroll(element, 'top');\n  const scrollLeft = getScroll(element, 'left');\n  const modifier = subtract ? -1 : 1;\n  rect.top += scrollTop * modifier;\n  rect.bottom += scrollTop * modifier;\n  rect.left += scrollLeft * modifier;\n  rect.right += scrollLeft * modifier;\n  return rect;\n}\n","/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nexport default function getBordersSize(styles, axis) {\n  const sideA = axis === 'x' ? 'Left' : 'Top';\n  const sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n  return (\n    parseFloat(styles[`border${sideA}Width`]) +\n    parseFloat(styles[`border${sideB}Width`])\n  );\n}\n","import isIE from './isIE';\n\nfunction getSize(axis, body, html, computedStyle) {\n  return Math.max(\n    body[`offset${axis}`],\n    body[`scroll${axis}`],\n    html[`client${axis}`],\n    html[`offset${axis}`],\n    html[`scroll${axis}`],\n    isIE(10)\n      ? (parseInt(html[`offset${axis}`]) + \n      parseInt(computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`]) + \n      parseInt(computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`]))\n    : 0 \n  );\n}\n\nexport default function getWindowSizes(document) {\n  const body = document.body;\n  const html = document.documentElement;\n  const computedStyle = isIE(10) && getComputedStyle(html);\n\n  return {\n    height: getSize('Height', body, html, computedStyle),\n    width: getSize('Width', body, html, computedStyle),\n  };\n}\n","/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nexport default function getClientRect(offsets) {\n  return {\n    ...offsets,\n    right: offsets.left + offsets.width,\n    bottom: offsets.top + offsets.height,\n  };\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getBordersSize from './getBordersSize';\nimport getWindowSizes from './getWindowSizes';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\nimport isIE from './isIE';\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nexport default function getBoundingClientRect(element) {\n  let rect = {};\n\n  // IE10 10 FIX: Please, don't ask, the element isn't\n  // considered in DOM in some circumstances...\n  // This isn't reproducible in IE10 compatibility mode of IE11\n  try {\n    if (isIE(10)) {\n      rect = element.getBoundingClientRect();\n      const scrollTop = getScroll(element, 'top');\n      const scrollLeft = getScroll(element, 'left');\n      rect.top += scrollTop;\n      rect.left += scrollLeft;\n      rect.bottom += scrollTop;\n      rect.right += scrollLeft;\n    }\n    else {\n      rect = element.getBoundingClientRect();\n    }\n  }\n  catch(e){}\n\n  const result = {\n    left: rect.left,\n    top: rect.top,\n    width: rect.right - rect.left,\n    height: rect.bottom - rect.top,\n  };\n\n  // subtract scrollbar size from sizes\n  const sizes = element.nodeName === 'HTML' ? getWindowSizes(element.ownerDocument) : {};\n  const width =\n    sizes.width || element.clientWidth || result.width;\n  const height =\n    sizes.height || element.clientHeight || result.height;\n\n  let horizScrollbar = element.offsetWidth - width;\n  let vertScrollbar = element.offsetHeight - height;\n\n  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n  // we make this check conditional for performance reasons\n  if (horizScrollbar || vertScrollbar) {\n    const styles = getStyleComputedProperty(element);\n    horizScrollbar -= getBordersSize(styles, 'x');\n    vertScrollbar -= getBordersSize(styles, 'y');\n\n    result.width -= horizScrollbar;\n    result.height -= vertScrollbar;\n  }\n\n  return getClientRect(result);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport includeScroll from './includeScroll';\nimport getScrollParent from './getScrollParent';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport runIsIE from './isIE';\nimport getClientRect from './getClientRect';\n\nexport default function getOffsetRectRelativeToArbitraryNode(children, parent, fixedPosition = false) {\n  const isIE10 = runIsIE(10);\n  const isHTML = parent.nodeName === 'HTML';\n  const childrenRect = getBoundingClientRect(children);\n  const parentRect = getBoundingClientRect(parent);\n  const scrollParent = getScrollParent(children);\n\n  const styles = getStyleComputedProperty(parent);\n  const borderTopWidth = parseFloat(styles.borderTopWidth);\n  const borderLeftWidth = parseFloat(styles.borderLeftWidth);\n\n  // In cases where the parent is fixed, we must ignore negative scroll in offset calc\n  if(fixedPosition && isHTML) {\n    parentRect.top = Math.max(parentRect.top, 0);\n    parentRect.left = Math.max(parentRect.left, 0);\n  }\n  let offsets = getClientRect({\n    top: childrenRect.top - parentRect.top - borderTopWidth,\n    left: childrenRect.left - parentRect.left - borderLeftWidth,\n    width: childrenRect.width,\n    height: childrenRect.height,\n  });\n  offsets.marginTop = 0;\n  offsets.marginLeft = 0;\n\n  // Subtract margins of documentElement in case it's being used as parent\n  // we do this only on HTML because it's the only element that behaves\n  // differently when margins are applied to it. The margins are included in\n  // the box of the documentElement, in the other cases not.\n  if (!isIE10 && isHTML) {\n    const marginTop = parseFloat(styles.marginTop);\n    const marginLeft = parseFloat(styles.marginLeft);\n\n    offsets.top -= borderTopWidth - marginTop;\n    offsets.bottom -= borderTopWidth - marginTop;\n    offsets.left -= borderLeftWidth - marginLeft;\n    offsets.right -= borderLeftWidth - marginLeft;\n\n    // Attach marginTop and marginLeft because in some circumstances we may need them\n    offsets.marginTop = marginTop;\n    offsets.marginLeft = marginLeft;\n  }\n\n  if (\n    isIE10 && !fixedPosition\n      ? parent.contains(scrollParent)\n      : parent === scrollParent && scrollParent.nodeName !== 'BODY'\n  ) {\n    offsets = includeScroll(offsets, parent);\n  }\n\n  return offsets;\n}\n","import getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\n\nexport default function getViewportOffsetRectRelativeToArtbitraryNode(element, excludeScroll = false) {\n  const html = element.ownerDocument.documentElement;\n  const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n  const width = Math.max(html.clientWidth, window.innerWidth || 0);\n  const height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n  const scrollTop = !excludeScroll ? getScroll(html) : 0;\n  const scrollLeft = !excludeScroll ? getScroll(html, 'left') : 0;\n\n  const offset = {\n    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n    width,\n    height,\n  };\n\n  return getClientRect(offset);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nexport default function isFixed(element) {\n  const nodeName = element.nodeName;\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    return false;\n  }\n  if (getStyleComputedProperty(element, 'position') === 'fixed') {\n    return true;\n  }\n  const parentNode = getParentNode(element);\n  if (!parentNode) {\n    return false;\n  }\n  return isFixed(parentNode);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport isIE from './isIE';\n/**\n * Finds the first parent of an element that has a transformed property defined\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} first transformed parent or documentElement\n */\n\nexport default function getFixedPositionOffsetParent(element) {\n  // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n   if (!element || !element.parentElement || isIE()) {\n    return document.documentElement;\n  }\n  let el = element.parentElement;\n  while (el && getStyleComputedProperty(el, 'transform') === 'none') {\n    el = el.parentElement;\n  }\n  return el || document.documentElement;\n\n}\n","import getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport getReferenceNode from './getReferenceNode';\nimport findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getViewportOffsetRectRelativeToArtbitraryNode from './getViewportOffsetRectRelativeToArtbitraryNode';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\nimport getFixedPositionOffsetParent from './getFixedPositionOffsetParent';\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @param {Boolean} fixedPosition - Is in fixed position mode\n * @returns {Object} Coordinates of the boundaries\n */\nexport default function getBoundaries(\n  popper,\n  reference,\n  padding,\n  boundariesElement,\n  fixedPosition = false\n) {\n  // NOTE: 1 DOM access here\n\n  let boundaries = { top: 0, left: 0 };\n  const offsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference));\n\n  // Handle viewport case\n  if (boundariesElement === 'viewport' ) {\n    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent, fixedPosition);\n  }\n\n  else {\n    // Handle other cases based on DOM element used as boundaries\n    let boundariesNode;\n    if (boundariesElement === 'scrollParent') {\n      boundariesNode = getScrollParent(getParentNode(reference));\n      if (boundariesNode.nodeName === 'BODY') {\n        boundariesNode = popper.ownerDocument.documentElement;\n      }\n    } else if (boundariesElement === 'window') {\n      boundariesNode = popper.ownerDocument.documentElement;\n    } else {\n      boundariesNode = boundariesElement;\n    }\n\n    const offsets = getOffsetRectRelativeToArbitraryNode(\n      boundariesNode,\n      offsetParent,\n      fixedPosition\n    );\n\n    // In case of HTML, we need a different computation\n    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n      const { height, width } = getWindowSizes(popper.ownerDocument);\n      boundaries.top += offsets.top - offsets.marginTop;\n      boundaries.bottom = height + offsets.top;\n      boundaries.left += offsets.left - offsets.marginLeft;\n      boundaries.right = width + offsets.left;\n    } else {\n      // for all the other DOM elements, this one is good\n      boundaries = offsets;\n    }\n  }\n\n  // Add paddings\n  padding = padding || 0;\n  const isPaddingNumber = typeof padding === 'number';\n  boundaries.left += isPaddingNumber ? padding : padding.left || 0; \n  boundaries.top += isPaddingNumber ? padding : padding.top || 0; \n  boundaries.right -= isPaddingNumber ? padding : padding.right || 0; \n  boundaries.bottom -= isPaddingNumber ? padding : padding.bottom || 0; \n\n  return boundaries;\n}\n","import getBoundaries from '../utils/getBoundaries';\n\nfunction getArea({ width, height }) {\n  return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeAutoPlacement(\n  placement,\n  refRect,\n  popper,\n  reference,\n  boundariesElement,\n  padding = 0\n) {\n  if (placement.indexOf('auto') === -1) {\n    return placement;\n  }\n\n  const boundaries = getBoundaries(\n    popper,\n    reference,\n    padding,\n    boundariesElement\n  );\n\n  const rects = {\n    top: {\n      width: boundaries.width,\n      height: refRect.top - boundaries.top,\n    },\n    right: {\n      width: boundaries.right - refRect.right,\n      height: boundaries.height,\n    },\n    bottom: {\n      width: boundaries.width,\n      height: boundaries.bottom - refRect.bottom,\n    },\n    left: {\n      width: refRect.left - boundaries.left,\n      height: boundaries.height,\n    },\n  };\n\n  const sortedAreas = Object.keys(rects)\n    .map(key => ({\n      key,\n      ...rects[key],\n      area: getArea(rects[key]),\n    }))\n    .sort((a, b) => b.area - a.area);\n\n  const filteredAreas = sortedAreas.filter(\n    ({ width, height }) =>\n      width >= popper.clientWidth && height >= popper.clientHeight\n  );\n\n  const computedPlacement = filteredAreas.length > 0\n    ? filteredAreas[0].key\n    : sortedAreas[0].key;\n\n  const variation = placement.split('-')[1];\n\n  return computedPlacement + (variation ? `-${variation}` : '');\n}\n","import findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getFixedPositionOffsetParent from './getFixedPositionOffsetParent';\nimport getReferenceNode from './getReferenceNode';\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @param {Element} fixedPosition - is in fixed position mode\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nexport default function getReferenceOffsets(state, popper, reference, fixedPosition = null) {\n  const commonOffsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference));\n  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent, fixedPosition);\n}\n","/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nexport default function getOuterSizes(element) {\n  const window = element.ownerDocument.defaultView;\n  const styles = window.getComputedStyle(element);\n  const x = parseFloat(styles.marginTop || 0) + parseFloat(styles.marginBottom || 0);\n  const y = parseFloat(styles.marginLeft || 0) + parseFloat(styles.marginRight || 0);\n  const result = {\n    width: element.offsetWidth + y,\n    height: element.offsetHeight + x,\n  };\n  return result;\n}\n","/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nexport default function getOppositePlacement(placement) {\n  const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n  return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);\n}\n","import getOuterSizes from './getOuterSizes';\nimport getOppositePlacement from './getOppositePlacement';\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nexport default function getPopperOffsets(popper, referenceOffsets, placement) {\n  placement = placement.split('-')[0];\n\n  // Get popper node sizes\n  const popperRect = getOuterSizes(popper);\n\n  // Add position, width and height to our offsets object\n  const popperOffsets = {\n    width: popperRect.width,\n    height: popperRect.height,\n  };\n\n  // depending by the popper placement we have to compute its offsets slightly differently\n  const isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n  const mainSide = isHoriz ? 'top' : 'left';\n  const secondarySide = isHoriz ? 'left' : 'top';\n  const measurement = isHoriz ? 'height' : 'width';\n  const secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n  popperOffsets[mainSide] =\n    referenceOffsets[mainSide] +\n    referenceOffsets[measurement] / 2 -\n    popperRect[measurement] / 2;\n  if (placement === secondarySide) {\n    popperOffsets[secondarySide] =\n      referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n  } else {\n    popperOffsets[secondarySide] =\n      referenceOffsets[getOppositePlacement(secondarySide)];\n  }\n\n  return popperOffsets;\n}\n","/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function find(arr, check) {\n  // use native find if supported\n  if (Array.prototype.find) {\n    return arr.find(check);\n  }\n\n  // use `filter` to obtain the same behavior of `find`\n  return arr.filter(check)[0];\n}\n","import isFunction from './isFunction';\nimport findIndex from './findIndex';\nimport getClientRect from '../utils/getClientRect';\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nexport default function runModifiers(modifiers, data, ends) {\n  const modifiersToRun = ends === undefined\n    ? modifiers\n    : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n  modifiersToRun.forEach(modifier => {\n    if (modifier['function']) { // eslint-disable-line dot-notation\n      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n    }\n    const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n    if (modifier.enabled && isFunction(fn)) {\n      // Add properties to offsets to make them a complete clientRect object\n      // we do this before each modifier to make sure the previous one doesn't\n      // mess with these values\n      data.offsets.popper = getClientRect(data.offsets.popper);\n      data.offsets.reference = getClientRect(data.offsets.reference);\n\n      data = fn(data, modifier);\n    }\n  });\n\n  return data;\n}\n","import find from './find';\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function findIndex(arr, prop, value) {\n  // use native findIndex if supported\n  if (Array.prototype.findIndex) {\n    return arr.findIndex(cur => cur[prop] === value);\n  }\n\n  // use `find` + `indexOf` if `findIndex` isn't supported\n  const match = find(arr, obj => obj[prop] === value);\n  return arr.indexOf(match);\n}\n","import computeAutoPlacement from '../utils/computeAutoPlacement';\nimport getReferenceOffsets from '../utils/getReferenceOffsets';\nimport getPopperOffsets from '../utils/getPopperOffsets';\nimport runModifiers from '../utils/runModifiers';\n\n/**\n * Updates the position of the popper, computing the new offsets and applying\n * the new style.<br />\n * Prefer `scheduleUpdate` over `update` because of performance reasons.\n * @method\n * @memberof Popper\n */\nexport default function update() {\n  // if popper is destroyed, don't perform any further update\n  if (this.state.isDestroyed) {\n    return;\n  }\n\n  let data = {\n    instance: this,\n    styles: {},\n    arrowStyles: {},\n    attributes: {},\n    flipped: false,\n    offsets: {},\n  };\n\n  // compute reference element offsets\n  data.offsets.reference = getReferenceOffsets(\n    this.state,\n    this.popper,\n    this.reference,\n    this.options.positionFixed\n  );\n\n  // compute auto placement, store placement inside the data object,\n  // modifiers will be able to edit `placement` if needed\n  // and refer to originalPlacement to know the original value\n  data.placement = computeAutoPlacement(\n    this.options.placement,\n    data.offsets.reference,\n    this.popper,\n    this.reference,\n    this.options.modifiers.flip.boundariesElement,\n    this.options.modifiers.flip.padding\n  );\n\n  // store the computed placement inside `originalPlacement`\n  data.originalPlacement = data.placement;\n\n  data.positionFixed = this.options.positionFixed;\n\n  // compute the popper offsets\n  data.offsets.popper = getPopperOffsets(\n    this.popper,\n    data.offsets.reference,\n    data.placement\n  );\n\n  data.offsets.popper.position = this.options.positionFixed\n    ? 'fixed'\n    : 'absolute';\n\n  // run the modifiers\n  data = runModifiers(this.modifiers, data);\n\n  // the first `update` will call `onCreate` callback\n  // the other ones will call `onUpdate` callback\n  if (!this.state.isCreated) {\n    this.state.isCreated = true;\n    this.options.onCreate(data);\n  } else {\n    this.options.onUpdate(data);\n  }\n}\n","/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nexport default function isModifierEnabled(modifiers, modifierName) {\n  return modifiers.some(\n    ({ name, enabled }) => enabled && name === modifierName\n  );\n}\n","/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nexport default function getSupportedPropertyName(property) {\n  const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n  const upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n  for (let i = 0; i < prefixes.length; i++) {\n    const prefix = prefixes[i];\n    const toCheck = prefix ? `${prefix}${upperProp}` : property;\n    if (typeof document.body.style[toCheck] !== 'undefined') {\n      return toCheck;\n    }\n  }\n  return null;\n}\n","import isModifierEnabled from '../utils/isModifierEnabled';\nimport getSupportedPropertyName from '../utils/getSupportedPropertyName';\n\n/**\n * Destroys the popper.\n * @method\n * @memberof Popper\n */\nexport default function destroy() {\n  this.state.isDestroyed = true;\n\n  // touch DOM only if `applyStyle` modifier is enabled\n  if (isModifierEnabled(this.modifiers, 'applyStyle')) {\n    this.popper.removeAttribute('x-placement');\n    this.popper.style.position = '';\n    this.popper.style.top = '';\n    this.popper.style.left = '';\n    this.popper.style.right = '';\n    this.popper.style.bottom = '';\n    this.popper.style.willChange = '';\n    this.popper.style[getSupportedPropertyName('transform')] = '';\n  }\n\n  this.disableEventListeners();\n\n  // remove the popper if user explicitly asked for the deletion on destroy\n  // do not use `remove` because IE11 doesn't support it\n  if (this.options.removeOnDestroy) {\n    this.popper.parentNode.removeChild(this.popper);\n  }\n  return this;\n}\n","/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nexport default function getWindow(element) {\n  const ownerDocument = element.ownerDocument;\n  return ownerDocument ? ownerDocument.defaultView : window;\n}\n","import getScrollParent from './getScrollParent';\nimport getWindow from './getWindow';\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n  const isBody = scrollParent.nodeName === 'BODY';\n  const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n  target.addEventListener(event, callback, { passive: true });\n\n  if (!isBody) {\n    attachToScrollParents(\n      getScrollParent(target.parentNode),\n      event,\n      callback,\n      scrollParents\n    );\n  }\n  scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function setupEventListeners(\n  reference,\n  options,\n  state,\n  updateBound\n) {\n  // Resize event listener on window\n  state.updateBound = updateBound;\n  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n  // Scroll event listener on scroll parents\n  const scrollElement = getScrollParent(reference);\n  attachToScrollParents(\n    scrollElement,\n    'scroll',\n    state.updateBound,\n    state.scrollParents\n  );\n  state.scrollElement = scrollElement;\n  state.eventsEnabled = true;\n\n  return state;\n}\n","import setupEventListeners from '../utils/setupEventListeners';\n\n/**\n * It will add resize/scroll events and start recalculating\n * position of the popper element when they are triggered.\n * @method\n * @memberof Popper\n */\nexport default function enableEventListeners() {\n  if (!this.state.eventsEnabled) {\n    this.state = setupEventListeners(\n      this.reference,\n      this.options,\n      this.state,\n      this.scheduleUpdate\n    );\n  }\n}\n","import removeEventListeners from '../utils/removeEventListeners';\n\n/**\n * It will remove resize/scroll events and won't recalculate popper position\n * when they are triggered. It also won't trigger `onUpdate` callback anymore,\n * unless you call `update` method manually.\n * @method\n * @memberof Popper\n */\nexport default function disableEventListeners() {\n  if (this.state.eventsEnabled) {\n    cancelAnimationFrame(this.scheduleUpdate);\n    this.state = removeEventListeners(this.reference, this.state);\n  }\n}\n","import getWindow from './getWindow';\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function removeEventListeners(reference, state) {\n  // Remove resize event listener on window\n  getWindow(reference).removeEventListener('resize', state.updateBound);\n\n  // Remove scroll event listener on scroll parents\n  state.scrollParents.forEach(target => {\n    target.removeEventListener('scroll', state.updateBound);\n  });\n\n  // Reset state\n  state.updateBound = null;\n  state.scrollParents = [];\n  state.scrollElement = null;\n  state.eventsEnabled = false;\n  return state;\n}\n","/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nexport default function isNumeric(n) {\n  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n","import isNumeric from './isNumeric';\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setStyles(element, styles) {\n  Object.keys(styles).forEach(prop => {\n    let unit = '';\n    // add unit if the value is numeric and is one of the following\n    if (\n      ['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !==\n        -1 &&\n      isNumeric(styles[prop])\n    ) {\n      unit = 'px';\n    }\n    element.style[prop] = styles[prop] + unit;\n  });\n}\n","import getSupportedPropertyName from '../utils/getSupportedPropertyName';\nimport find from '../utils/find';\nimport getOffsetParent from '../utils/getOffsetParent';\nimport getBoundingClientRect from '../utils/getBoundingClientRect';\nimport getRoundedOffsets from '../utils/getRoundedOffsets';\nimport isBrowser from '../utils/isBrowser';\n\nconst isFirefox = isBrowser && /Firefox/i.test(navigator.userAgent);\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeStyle(data, options) {\n  const { x, y } = options;\n  const { popper } = data.offsets;\n\n  // Remove this legacy support in Popper.js v2\n  const legacyGpuAccelerationOption = find(\n    data.instance.modifiers,\n    modifier => modifier.name === 'applyStyle'\n  ).gpuAcceleration;\n  if (legacyGpuAccelerationOption !== undefined) {\n    console.warn(\n      'WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!'\n    );\n  }\n  const gpuAcceleration =\n    legacyGpuAccelerationOption !== undefined\n      ? legacyGpuAccelerationOption\n      : options.gpuAcceleration;\n\n  const offsetParent = getOffsetParent(data.instance.popper);\n  const offsetParentRect = getBoundingClientRect(offsetParent);\n\n  // Styles\n  const styles = {\n    position: popper.position,\n  };\n\n  const offsets = getRoundedOffsets(\n    data,\n    window.devicePixelRatio < 2 || !isFirefox\n  );\n\n  const sideA = x === 'bottom' ? 'top' : 'bottom';\n  const sideB = y === 'right' ? 'left' : 'right';\n\n  // if gpuAcceleration is set to `true` and transform is supported,\n  //  we use `translate3d` to apply the position to the popper we\n  // automatically use the supported prefixed version if needed\n  const prefixedProperty = getSupportedPropertyName('transform');\n\n  // now, let's make a step back and look at this code closely (wtf?)\n  // If the content of the popper grows once it's been positioned, it\n  // may happen that the popper gets misplaced because of the new content\n  // overflowing its reference element\n  // To avoid this problem, we provide two options (x and y), which allow\n  // the consumer to define the offset origin.\n  // If we position a popper on top of a reference element, we can set\n  // `x` to `top` to make the popper grow towards its top instead of\n  // its bottom.\n  let left, top;\n  if (sideA === 'bottom') {\n    // when offsetParent is <html> the positioning is relative to the bottom of the screen (excluding the scrollbar)\n    // and not the bottom of the html element\n    if (offsetParent.nodeName === 'HTML') {\n      top = -offsetParent.clientHeight + offsets.bottom;\n    } else {\n      top = -offsetParentRect.height + offsets.bottom;\n    }\n  } else {\n    top = offsets.top;\n  }\n  if (sideB === 'right') {\n    if (offsetParent.nodeName === 'HTML') {\n      left = -offsetParent.clientWidth + offsets.right;\n    } else {\n      left = -offsetParentRect.width + offsets.right;\n    }\n  } else {\n    left = offsets.left;\n  }\n  if (gpuAcceleration && prefixedProperty) {\n    styles[prefixedProperty] = `translate3d(${left}px, ${top}px, 0)`;\n    styles[sideA] = 0;\n    styles[sideB] = 0;\n    styles.willChange = 'transform';\n  } else {\n    // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties\n    const invertTop = sideA === 'bottom' ? -1 : 1;\n    const invertLeft = sideB === 'right' ? -1 : 1;\n    styles[sideA] = top * invertTop;\n    styles[sideB] = left * invertLeft;\n    styles.willChange = `${sideA}, ${sideB}`;\n  }\n\n  // Attributes\n  const attributes = {\n    'x-placement': data.placement,\n  };\n\n  // Update `data` attributes, styles and arrowStyles\n  data.attributes = { ...attributes, ...data.attributes };\n  data.styles = { ...styles, ...data.styles };\n  data.arrowStyles = { ...data.offsets.arrow, ...data.arrowStyles };\n\n  return data;\n}\n","import find from './find';\n\n/**\n * Helper used to know if the given modifier depends from another one.<br />\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nexport default function isModifierRequired(\n  modifiers,\n  requestingName,\n  requestedName\n) {\n  const requesting = find(modifiers, ({ name }) => name === requestingName);\n\n  const isRequired =\n    !!requesting &&\n    modifiers.some(modifier => {\n      return (\n        modifier.name === requestedName &&\n        modifier.enabled &&\n        modifier.order < requesting.order\n      );\n    });\n\n  if (!isRequired) {\n    const requesting = `\\`${requestingName}\\``;\n    const requested = `\\`${requestedName}\\``;\n    console.warn(\n      `${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`\n    );\n  }\n  return isRequired;\n}\n","/**\n * List of accepted placements to use as values of the `placement` option.<br />\n * Valid placements are:\n * - `auto`\n * - `top`\n * - `right`\n * - `bottom`\n * - `left`\n *\n * Each placement can have a variation from this list:\n * - `-start`\n * - `-end`\n *\n * Variations are interpreted easily if you think of them as the left to right\n * written languages. Horizontally (`top` and `bottom`), `start` is left and `end`\n * is right.<br />\n * Vertically (`left` and `right`), `start` is top and `end` is bottom.\n *\n * Some valid examples are:\n * - `top-end` (on top of reference, right aligned)\n * - `right-start` (on right of reference, top aligned)\n * - `bottom` (on bottom, centered)\n * - `auto-end` (on the side with more space available, alignment depends by placement)\n *\n * @static\n * @type {Array}\n * @enum {String}\n * @readonly\n * @method placements\n * @memberof Popper\n */\nexport default [\n  'auto-start',\n  'auto',\n  'auto-end',\n  'top-start',\n  'top',\n  'top-end',\n  'right-start',\n  'right',\n  'right-end',\n  'bottom-end',\n  'bottom',\n  'bottom-start',\n  'left-end',\n  'left',\n  'left-start',\n];\n","import placements from '../methods/placements';\n\n// Get rid of `auto` `auto-start` and `auto-end`\nconst validPlacements = placements.slice(3);\n\n/**\n * Given an initial placement, returns all the subsequent placements\n * clockwise (or counter-clockwise).\n *\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement - A valid placement (it accepts variations)\n * @argument {Boolean} counter - Set to true to walk the placements counterclockwise\n * @returns {Array} placements including their variations\n */\nexport default function clockwise(placement, counter = false) {\n  const index = validPlacements.indexOf(placement);\n  const arr = validPlacements\n    .slice(index + 1)\n    .concat(validPlacements.slice(0, index));\n  return counter ? arr.reverse() : arr;\n}\n","import getOppositePlacement from '../utils/getOppositePlacement';\nimport getOppositeVariation from '../utils/getOppositeVariation';\nimport getPopperOffsets from '../utils/getPopperOffsets';\nimport runModifiers from '../utils/runModifiers';\nimport getBoundaries from '../utils/getBoundaries';\nimport isModifierEnabled from '../utils/isModifierEnabled';\nimport clockwise from '../utils/clockwise';\n\nconst BEHAVIORS = {\n  FLIP: 'flip',\n  CLOCKWISE: 'clockwise',\n  COUNTERCLOCKWISE: 'counterclockwise',\n};\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function flip(data, options) {\n  // if `inner` modifier is enabled, we can't use the `flip` modifier\n  if (isModifierEnabled(data.instance.modifiers, 'inner')) {\n    return data;\n  }\n\n  if (data.flipped && data.placement === data.originalPlacement) {\n    // seems like flip is trying to loop, probably there's not enough space on any of the flippable sides\n    return data;\n  }\n\n  const boundaries = getBoundaries(\n    data.instance.popper,\n    data.instance.reference,\n    options.padding,\n    options.boundariesElement,\n    data.positionFixed\n  );\n\n  let placement = data.placement.split('-')[0];\n  let placementOpposite = getOppositePlacement(placement);\n  let variation = data.placement.split('-')[1] || '';\n\n  let flipOrder = [];\n\n  switch (options.behavior) {\n    case BEHAVIORS.FLIP:\n      flipOrder = [placement, placementOpposite];\n      break;\n    case BEHAVIORS.CLOCKWISE:\n      flipOrder = clockwise(placement);\n      break;\n    case BEHAVIORS.COUNTERCLOCKWISE:\n      flipOrder = clockwise(placement, true);\n      break;\n    default:\n      flipOrder = options.behavior;\n  }\n\n  flipOrder.forEach((step, index) => {\n    if (placement !== step || flipOrder.length === index + 1) {\n      return data;\n    }\n\n    placement = data.placement.split('-')[0];\n    placementOpposite = getOppositePlacement(placement);\n\n    const popperOffsets = data.offsets.popper;\n    const refOffsets = data.offsets.reference;\n\n    // using floor because the reference offsets may contain decimals we are not going to consider here\n    const floor = Math.floor;\n    const overlapsRef =\n      (placement === 'left' &&\n        floor(popperOffsets.right) > floor(refOffsets.left)) ||\n      (placement === 'right' &&\n        floor(popperOffsets.left) < floor(refOffsets.right)) ||\n      (placement === 'top' &&\n        floor(popperOffsets.bottom) > floor(refOffsets.top)) ||\n      (placement === 'bottom' &&\n        floor(popperOffsets.top) < floor(refOffsets.bottom));\n\n    const overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);\n    const overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);\n    const overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);\n    const overflowsBottom =\n      floor(popperOffsets.bottom) > floor(boundaries.bottom);\n\n    const overflowsBoundaries =\n      (placement === 'left' && overflowsLeft) ||\n      (placement === 'right' && overflowsRight) ||\n      (placement === 'top' && overflowsTop) ||\n      (placement === 'bottom' && overflowsBottom);\n\n    // flip the variation if required\n    const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n\n    // flips variation if reference element overflows boundaries\n    const flippedVariationByRef =\n      !!options.flipVariations &&\n      ((isVertical && variation === 'start' && overflowsLeft) ||\n        (isVertical && variation === 'end' && overflowsRight) ||\n        (!isVertical && variation === 'start' && overflowsTop) ||\n        (!isVertical && variation === 'end' && overflowsBottom));\n\n    // flips variation if popper content overflows boundaries\n    const flippedVariationByContent =\n      !!options.flipVariationsByContent &&\n      ((isVertical && variation === 'start' && overflowsRight) ||\n        (isVertical && variation === 'end' && overflowsLeft) ||\n        (!isVertical && variation === 'start' && overflowsBottom) ||\n        (!isVertical && variation === 'end' && overflowsTop));\n\n    const flippedVariation = flippedVariationByRef || flippedVariationByContent;\n\n    if (overlapsRef || overflowsBoundaries || flippedVariation) {\n      // this boolean to detect any flip loop\n      data.flipped = true;\n\n      if (overlapsRef || overflowsBoundaries) {\n        placement = flipOrder[index + 1];\n      }\n\n      if (flippedVariation) {\n        variation = getOppositeVariation(variation);\n      }\n\n      data.placement = placement + (variation ? '-' + variation : '');\n\n      // this object contains `position`, we want to preserve it along with\n      // any additional property we may add in the future\n      data.offsets.popper = {\n        ...data.offsets.popper,\n        ...getPopperOffsets(\n          data.instance.popper,\n          data.offsets.reference,\n          data.placement\n        ),\n      };\n\n      data = runModifiers(data.instance.modifiers, data, 'flip');\n    }\n  });\n  return data;\n}\n","import isNumeric from '../utils/isNumeric';\nimport getClientRect from '../utils/getClientRect';\nimport find from '../utils/find';\n\n/**\n * Converts a string containing value + unit into a px value number\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} str - Value + unit string\n * @argument {String} measurement - `height` or `width`\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @returns {Number|String}\n * Value in pixels, or original string if no values were extracted\n */\nexport function toValue(str, measurement, popperOffsets, referenceOffsets) {\n  // separate value from unit\n  const split = str.match(/((?:\\-|\\+)?\\d*\\.?\\d*)(.*)/);\n  const value = +split[1];\n  const unit = split[2];\n\n  // If it's not a number it's an operator, I guess\n  if (!value) {\n    return str;\n  }\n\n  if (unit.indexOf('%') === 0) {\n    let element;\n    switch (unit) {\n      case '%p':\n        element = popperOffsets;\n        break;\n      case '%':\n      case '%r':\n      default:\n        element = referenceOffsets;\n    }\n\n    const rect = getClientRect(element);\n    return rect[measurement] / 100 * value;\n  } else if (unit === 'vh' || unit === 'vw') {\n    // if is a vh or vw, we calculate the size based on the viewport\n    let size;\n    if (unit === 'vh') {\n      size = Math.max(\n        document.documentElement.clientHeight,\n        window.innerHeight || 0\n      );\n    } else {\n      size = Math.max(\n        document.documentElement.clientWidth,\n        window.innerWidth || 0\n      );\n    }\n    return size / 100 * value;\n  } else {\n    // if is an explicit pixel unit, we get rid of the unit and keep the value\n    // if is an implicit unit, it's px, and we return just the value\n    return value;\n  }\n}\n\n/**\n * Parse an `offset` string to extrapolate `x` and `y` numeric offsets.\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} offset\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @argument {String} basePlacement\n * @returns {Array} a two cells array with x and y offsets in numbers\n */\nexport function parseOffset(\n  offset,\n  popperOffsets,\n  referenceOffsets,\n  basePlacement\n) {\n  const offsets = [0, 0];\n\n  // Use height if placement is left or right and index is 0 otherwise use width\n  // in this way the first offset will use an axis and the second one\n  // will use the other one\n  const useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;\n\n  // Split the offset string to obtain a list of values and operands\n  // The regex addresses values with the plus or minus sign in front (+10, -20, etc)\n  const fragments = offset.split(/(\\+|\\-)/).map(frag => frag.trim());\n\n  // Detect if the offset string contains a pair of values or a single one\n  // they could be separated by comma or space\n  const divider = fragments.indexOf(\n    find(fragments, frag => frag.search(/,|\\s/) !== -1)\n  );\n\n  if (fragments[divider] && fragments[divider].indexOf(',') === -1) {\n    console.warn(\n      'Offsets separated by white space(s) are deprecated, use a comma (,) instead.'\n    );\n  }\n\n  // If divider is found, we divide the list of values and operands to divide\n  // them by ofset X and Y.\n  const splitRegex = /\\s*,\\s*|\\s+/;\n  let ops = divider !== -1\n    ? [\n        fragments\n          .slice(0, divider)\n          .concat([fragments[divider].split(splitRegex)[0]]),\n        [fragments[divider].split(splitRegex)[1]].concat(\n          fragments.slice(divider + 1)\n        ),\n      ]\n    : [fragments];\n\n  // Convert the values with units to absolute pixels to allow our computations\n  ops = ops.map((op, index) => {\n    // Most of the units rely on the orientation of the popper\n    const measurement = (index === 1 ? !useHeight : useHeight)\n      ? 'height'\n      : 'width';\n    let mergeWithPrevious = false;\n    return (\n      op\n        // This aggregates any `+` or `-` sign that aren't considered operators\n        // e.g.: 10 + +5 => [10, +, +5]\n        .reduce((a, b) => {\n          if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {\n            a[a.length - 1] = b;\n            mergeWithPrevious = true;\n            return a;\n          } else if (mergeWithPrevious) {\n            a[a.length - 1] += b;\n            mergeWithPrevious = false;\n            return a;\n          } else {\n            return a.concat(b);\n          }\n        }, [])\n        // Here we convert the string values into number values (in px)\n        .map(str => toValue(str, measurement, popperOffsets, referenceOffsets))\n    );\n  });\n\n  // Loop trough the offsets arrays and execute the operations\n  ops.forEach((op, index) => {\n    op.forEach((frag, index2) => {\n      if (isNumeric(frag)) {\n        offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);\n      }\n    });\n  });\n  return offsets;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @argument {Number|String} options.offset=0\n * The offset value as described in the modifier description\n * @returns {Object} The data object, properly modified\n */\nexport default function offset(data, { offset }) {\n  const { placement, offsets: { popper, reference } } = data;\n  const basePlacement = placement.split('-')[0];\n\n  let offsets;\n  if (isNumeric(+offset)) {\n    offsets = [+offset, 0];\n  } else {\n    offsets = parseOffset(offset, popper, reference, basePlacement);\n  }\n\n  if (basePlacement === 'left') {\n    popper.top += offsets[0];\n    popper.left -= offsets[1];\n  } else if (basePlacement === 'right') {\n    popper.top += offsets[0];\n    popper.left += offsets[1];\n  } else if (basePlacement === 'top') {\n    popper.left += offsets[0];\n    popper.top -= offsets[1];\n  } else if (basePlacement === 'bottom') {\n    popper.left += offsets[0];\n    popper.top += offsets[1];\n  }\n\n  data.popper = popper;\n  return data;\n}\n","import applyStyle, { applyStyleOnLoad } from './applyStyle';\nimport computeStyle from './computeStyle';\nimport arrow from './arrow';\nimport flip from './flip';\nimport keepTogether from './keepTogether';\nimport offset from './offset';\nimport preventOverflow from './preventOverflow';\nimport shift from './shift';\nimport hide from './hide';\nimport inner from './inner';\n\n/**\n * Modifier function, each modifier can have a function of this type assigned\n * to its `fn` property.<br />\n * These functions will be called on each update, this means that you must\n * make sure they are performant enough to avoid performance bottlenecks.\n *\n * @function ModifierFn\n * @argument {dataObject} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {dataObject} The data object, properly modified\n */\n\n/**\n * Modifiers are plugins used to alter the behavior of your poppers.<br />\n * Popper.js uses a set of 9 modifiers to provide all the basic functionalities\n * needed by the library.\n *\n * Usually you don't want to override the `order`, `fn` and `onLoad` props.\n * All the other properties are configurations that could be tweaked.\n * @namespace modifiers\n */\nexport default {\n  /**\n   * Modifier used to shift the popper on the start or end of its reference\n   * element.<br />\n   * It will read the variation of the `placement` property.<br />\n   * It can be one either `-end` or `-start`.\n   * @memberof modifiers\n   * @inner\n   */\n  shift: {\n    /** @prop {number} order=100 - Index used to define the order of execution */\n    order: 100,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: shift,\n  },\n\n  /**\n   * The `offset` modifier can shift your popper on both its axis.\n   *\n   * It accepts the following units:\n   * - `px` or unit-less, interpreted as pixels\n   * - `%` or `%r`, percentage relative to the length of the reference element\n   * - `%p`, percentage relative to the length of the popper element\n   * - `vw`, CSS viewport width unit\n   * - `vh`, CSS viewport height unit\n   *\n   * For length is intended the main axis relative to the placement of the popper.<br />\n   * This means that if the placement is `top` or `bottom`, the length will be the\n   * `width`. In case of `left` or `right`, it will be the `height`.\n   *\n   * You can provide a single value (as `Number` or `String`), or a pair of values\n   * as `String` divided by a comma or one (or more) white spaces.<br />\n   * The latter is a deprecated method because it leads to confusion and will be\n   * removed in v2.<br />\n   * Additionally, it accepts additions and subtractions between different units.\n   * Note that multiplications and divisions aren't supported.\n   *\n   * Valid examples are:\n   * ```\n   * 10\n   * '10%'\n   * '10, 10'\n   * '10%, 10'\n   * '10 + 10%'\n   * '10 - 5vh + 3%'\n   * '-10px + 5vh, 5px - 6%'\n   * ```\n   * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap\n   * > with their reference element, unfortunately, you will have to disable the `flip` modifier.\n   * > You can read more on this at this [issue](https://github.com/FezVrasta/popper.js/issues/373).\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  offset: {\n    /** @prop {number} order=200 - Index used to define the order of execution */\n    order: 200,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: offset,\n    /** @prop {Number|String} offset=0\n     * The offset value as described in the modifier description\n     */\n    offset: 0,\n  },\n\n  /**\n   * Modifier used to prevent the popper from being positioned outside the boundary.\n   *\n   * A scenario exists where the reference itself is not within the boundaries.<br />\n   * We can say it has \"escaped the boundaries\" — or just \"escaped\".<br />\n   * In this case we need to decide whether the popper should either:\n   *\n   * - detach from the reference and remain \"trapped\" in the boundaries, or\n   * - if it should ignore the boundary and \"escape with its reference\"\n   *\n   * When `escapeWithReference` is set to`true` and reference is completely\n   * outside its boundaries, the popper will overflow (or completely leave)\n   * the boundaries in order to remain attached to the edge of the reference.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  preventOverflow: {\n    /** @prop {number} order=300 - Index used to define the order of execution */\n    order: 300,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: preventOverflow,\n    /**\n     * @prop {Array} [priority=['left','right','top','bottom']]\n     * Popper will try to prevent overflow following these priorities by default,\n     * then, it could overflow on the left and on top of the `boundariesElement`\n     */\n    priority: ['left', 'right', 'top', 'bottom'],\n    /**\n     * @prop {number} padding=5\n     * Amount of pixel used to define a minimum distance between the boundaries\n     * and the popper. This makes sure the popper always has a little padding\n     * between the edges of its container\n     */\n    padding: 5,\n    /**\n     * @prop {String|HTMLElement} boundariesElement='scrollParent'\n     * Boundaries used by the modifier. Can be `scrollParent`, `window`,\n     * `viewport` or any DOM element.\n     */\n    boundariesElement: 'scrollParent',\n  },\n\n  /**\n   * Modifier used to make sure the reference and its popper stay near each other\n   * without leaving any gap between the two. Especially useful when the arrow is\n   * enabled and you want to ensure that it points to its reference element.\n   * It cares only about the first axis. You can still have poppers with margin\n   * between the popper and its reference element.\n   * @memberof modifiers\n   * @inner\n   */\n  keepTogether: {\n    /** @prop {number} order=400 - Index used to define the order of execution */\n    order: 400,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: keepTogether,\n  },\n\n  /**\n   * This modifier is used to move the `arrowElement` of the popper to make\n   * sure it is positioned between the reference element and its popper element.\n   * It will read the outer size of the `arrowElement` node to detect how many\n   * pixels of conjunction are needed.\n   *\n   * It has no effect if no `arrowElement` is provided.\n   * @memberof modifiers\n   * @inner\n   */\n  arrow: {\n    /** @prop {number} order=500 - Index used to define the order of execution */\n    order: 500,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: arrow,\n    /** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */\n    element: '[x-arrow]',\n  },\n\n  /**\n   * Modifier used to flip the popper's placement when it starts to overlap its\n   * reference element.\n   *\n   * Requires the `preventOverflow` modifier before it in order to work.\n   *\n   * **NOTE:** this modifier will interrupt the current update cycle and will\n   * restart it if it detects the need to flip the placement.\n   * @memberof modifiers\n   * @inner\n   */\n  flip: {\n    /** @prop {number} order=600 - Index used to define the order of execution */\n    order: 600,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: flip,\n    /**\n     * @prop {String|Array} behavior='flip'\n     * The behavior used to change the popper's placement. It can be one of\n     * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid\n     * placements (with optional variations)\n     */\n    behavior: 'flip',\n    /**\n     * @prop {number} padding=5\n     * The popper will flip if it hits the edges of the `boundariesElement`\n     */\n    padding: 5,\n    /**\n     * @prop {String|HTMLElement} boundariesElement='viewport'\n     * The element which will define the boundaries of the popper position.\n     * The popper will never be placed outside of the defined boundaries\n     * (except if `keepTogether` is enabled)\n     */\n    boundariesElement: 'viewport',\n    /**\n     * @prop {Boolean} flipVariations=false\n     * The popper will switch placement variation between `-start` and `-end` when\n     * the reference element overlaps its boundaries.\n     *\n     * The original placement should have a set variation.\n     */\n    flipVariations: false,\n    /**\n     * @prop {Boolean} flipVariationsByContent=false\n     * The popper will switch placement variation between `-start` and `-end` when\n     * the popper element overlaps its reference boundaries.\n     *\n     * The original placement should have a set variation.\n     */\n    flipVariationsByContent: false,\n  },\n\n  /**\n   * Modifier used to make the popper flow toward the inner of the reference element.\n   * By default, when this modifier is disabled, the popper will be placed outside\n   * the reference element.\n   * @memberof modifiers\n   * @inner\n   */\n  inner: {\n    /** @prop {number} order=700 - Index used to define the order of execution */\n    order: 700,\n    /** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */\n    enabled: false,\n    /** @prop {ModifierFn} */\n    fn: inner,\n  },\n\n  /**\n   * Modifier used to hide the popper when its reference element is outside of the\n   * popper boundaries. It will set a `x-out-of-boundaries` attribute which can\n   * be used to hide with a CSS selector the popper when its reference is\n   * out of boundaries.\n   *\n   * Requires the `preventOverflow` modifier before it in order to work.\n   * @memberof modifiers\n   * @inner\n   */\n  hide: {\n    /** @prop {number} order=800 - Index used to define the order of execution */\n    order: 800,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: hide,\n  },\n\n  /**\n   * Computes the style that will be applied to the popper element to gets\n   * properly positioned.\n   *\n   * Note that this modifier will not touch the DOM, it just prepares the styles\n   * so that `applyStyle` modifier can apply it. This separation is useful\n   * in case you need to replace `applyStyle` with a custom implementation.\n   *\n   * This modifier has `850` as `order` value to maintain backward compatibility\n   * with previous versions of Popper.js. Expect the modifiers ordering method\n   * to change in future major versions of the library.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  computeStyle: {\n    /** @prop {number} order=850 - Index used to define the order of execution */\n    order: 850,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: computeStyle,\n    /**\n     * @prop {Boolean} gpuAcceleration=true\n     * If true, it uses the CSS 3D transformation to position the popper.\n     * Otherwise, it will use the `top` and `left` properties\n     */\n    gpuAcceleration: true,\n    /**\n     * @prop {string} [x='bottom']\n     * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.\n     * Change this if your popper should grow in a direction different from `bottom`\n     */\n    x: 'bottom',\n    /**\n     * @prop {string} [x='left']\n     * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.\n     * Change this if your popper should grow in a direction different from `right`\n     */\n    y: 'right',\n  },\n\n  /**\n   * Applies the computed styles to the popper element.\n   *\n   * All the DOM manipulations are limited to this modifier. This is useful in case\n   * you want to integrate Popper.js inside a framework or view library and you\n   * want to delegate all the DOM manipulations to it.\n   *\n   * Note that if you disable this modifier, you must make sure the popper element\n   * has its position set to `absolute` before Popper.js can do its work!\n   *\n   * Just disable this modifier and define your own to achieve the desired effect.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  applyStyle: {\n    /** @prop {number} order=900 - Index used to define the order of execution */\n    order: 900,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: applyStyle,\n    /** @prop {Function} */\n    onLoad: applyStyleOnLoad,\n    /**\n     * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier\n     * @prop {Boolean} gpuAcceleration=true\n     * If true, it uses the CSS 3D transformation to position the popper.\n     * Otherwise, it will use the `top` and `left` properties\n     */\n    gpuAcceleration: undefined,\n  },\n};\n\n/**\n * The `dataObject` is an object containing all the information used by Popper.js.\n * This object is passed to modifiers and to the `onCreate` and `onUpdate` callbacks.\n * @name dataObject\n * @property {Object} data.instance The Popper.js instance\n * @property {String} data.placement Placement applied to popper\n * @property {String} data.originalPlacement Placement originally defined on init\n * @property {Boolean} data.flipped True if popper has been flipped by flip modifier\n * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper\n * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier\n * @property {Object} data.styles Any CSS property defined here will be applied to the popper. It expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow. It expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.boundaries Offsets of the popper boundaries\n * @property {Object} data.offsets The measurements of popper, reference and arrow elements\n * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0\n */\n","/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function shift(data) {\n  const placement = data.placement;\n  const basePlacement = placement.split('-')[0];\n  const shiftvariation = placement.split('-')[1];\n\n  // if shift shiftvariation is specified, run the modifier\n  if (shiftvariation) {\n    const { reference, popper } = data.offsets;\n    const isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;\n    const side = isVertical ? 'left' : 'top';\n    const measurement = isVertical ? 'width' : 'height';\n\n    const shiftOffsets = {\n      start: { [side]: reference[side] },\n      end: {\n        [side]: reference[side] + reference[measurement] - popper[measurement],\n      },\n    };\n\n    data.offsets.popper = { ...popper, ...shiftOffsets[shiftvariation] };\n  }\n\n  return data;\n}\n","import getOffsetParent from '../utils/getOffsetParent';\nimport getBoundaries from '../utils/getBoundaries';\nimport getSupportedPropertyName from '../utils/getSupportedPropertyName';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function preventOverflow(data, options) {\n  let boundariesElement =\n    options.boundariesElement || getOffsetParent(data.instance.popper);\n\n  // If offsetParent is the reference element, we really want to\n  // go one step up and use the next offsetParent as reference to\n  // avoid to make this modifier completely useless and look like broken\n  if (data.instance.reference === boundariesElement) {\n    boundariesElement = getOffsetParent(boundariesElement);\n  }\n\n  // NOTE: DOM access here\n  // resets the popper's position so that the document size can be calculated excluding\n  // the size of the popper element itself\n  const transformProp = getSupportedPropertyName('transform');\n  const popperStyles = data.instance.popper.style; // assignment to help minification\n  const { top, left, [transformProp]: transform } = popperStyles;\n  popperStyles.top = '';\n  popperStyles.left = '';\n  popperStyles[transformProp] = '';\n\n  const boundaries = getBoundaries(\n    data.instance.popper,\n    data.instance.reference,\n    options.padding,\n    boundariesElement,\n    data.positionFixed\n  );\n\n  // NOTE: DOM access here\n  // restores the original style properties after the offsets have been computed\n  popperStyles.top = top;\n  popperStyles.left = left;\n  popperStyles[transformProp] = transform;\n\n  options.boundaries = boundaries;\n\n  const order = options.priority;\n  let popper = data.offsets.popper;\n\n  const check = {\n    primary(placement) {\n      let value = popper[placement];\n      if (\n        popper[placement] < boundaries[placement] &&\n        !options.escapeWithReference\n      ) {\n        value = Math.max(popper[placement], boundaries[placement]);\n      }\n      return { [placement]: value };\n    },\n    secondary(placement) {\n      const mainSide = placement === 'right' ? 'left' : 'top';\n      let value = popper[mainSide];\n      if (\n        popper[placement] > boundaries[placement] &&\n        !options.escapeWithReference\n      ) {\n        value = Math.min(\n          popper[mainSide],\n          boundaries[placement] -\n            (placement === 'right' ? popper.width : popper.height)\n        );\n      }\n      return { [mainSide]: value };\n    },\n  };\n\n  order.forEach(placement => {\n    const side =\n      ['left', 'top'].indexOf(placement) !== -1 ? 'primary' : 'secondary';\n    popper = { ...popper, ...check[side](placement) };\n  });\n\n  data.offsets.popper = popper;\n\n  return data;\n}\n","/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function keepTogether(data) {\n  const { popper, reference } = data.offsets;\n  const placement = data.placement.split('-')[0];\n  const floor = Math.floor;\n  const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n  const side = isVertical ? 'right' : 'bottom';\n  const opSide = isVertical ? 'left' : 'top';\n  const measurement = isVertical ? 'width' : 'height';\n\n  if (popper[side] < floor(reference[opSide])) {\n    data.offsets.popper[opSide] =\n      floor(reference[opSide]) - popper[measurement];\n  }\n  if (popper[opSide] > floor(reference[side])) {\n    data.offsets.popper[opSide] = floor(reference[side]);\n  }\n\n  return data;\n}\n","import getClientRect from '../utils/getClientRect';\nimport getOuterSizes from '../utils/getOuterSizes';\nimport isModifierRequired from '../utils/isModifierRequired';\nimport getStyleComputedProperty from '../utils/getStyleComputedProperty';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function arrow(data, options) {\n  // arrow depends on keepTogether in order to work\n  if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {\n    return data;\n  }\n\n  let arrowElement = options.element;\n\n  // if arrowElement is a string, suppose it's a CSS selector\n  if (typeof arrowElement === 'string') {\n    arrowElement = data.instance.popper.querySelector(arrowElement);\n\n    // if arrowElement is not found, don't run the modifier\n    if (!arrowElement) {\n      return data;\n    }\n  } else {\n    // if the arrowElement isn't a query selector we must check that the\n    // provided DOM node is child of its popper node\n    if (!data.instance.popper.contains(arrowElement)) {\n      console.warn(\n        'WARNING: `arrow.element` must be child of its popper element!'\n      );\n      return data;\n    }\n  }\n\n  const placement = data.placement.split('-')[0];\n  const { popper, reference } = data.offsets;\n  const isVertical = ['left', 'right'].indexOf(placement) !== -1;\n\n  const len = isVertical ? 'height' : 'width';\n  const sideCapitalized = isVertical ? 'Top' : 'Left';\n  const side = sideCapitalized.toLowerCase();\n  const altSide = isVertical ? 'left' : 'top';\n  const opSide = isVertical ? 'bottom' : 'right';\n  const arrowElementSize = getOuterSizes(arrowElement)[len];\n\n  //\n  // extends keepTogether behavior making sure the popper and its\n  // reference have enough pixels in conjunction\n  //\n\n  // top/left side\n  if (reference[opSide] - arrowElementSize < popper[side]) {\n    data.offsets.popper[side] -=\n      popper[side] - (reference[opSide] - arrowElementSize);\n  }\n  // bottom/right side\n  if (reference[side] + arrowElementSize > popper[opSide]) {\n    data.offsets.popper[side] +=\n      reference[side] + arrowElementSize - popper[opSide];\n  }\n  data.offsets.popper = getClientRect(data.offsets.popper);\n\n  // compute center of the popper\n  const center = reference[side] + reference[len] / 2 - arrowElementSize / 2;\n\n  // Compute the sideValue using the updated popper offsets\n  // take popper margin in account because we don't have this info available\n  const css = getStyleComputedProperty(data.instance.popper);\n  const popperMarginSide = parseFloat(css[`margin${sideCapitalized}`]);\n  const popperBorderSide = parseFloat(css[`border${sideCapitalized}Width`]);\n  let sideValue =\n    center - data.offsets.popper[side] - popperMarginSide - popperBorderSide;\n\n  // prevent arrowElement from being placed not contiguously to its popper\n  sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);\n\n  data.arrowElement = arrowElement;\n  data.offsets.arrow = {\n    [side]: Math.round(sideValue),\n    [altSide]: '', // make sure to unset any eventual altSide value from the DOM node\n  };\n\n  return data;\n}\n","/**\n * Get the opposite placement variation of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement variation\n * @returns {String} flipped placement variation\n */\nexport default function getOppositeVariation(variation) {\n  if (variation === 'end') {\n    return 'start';\n  } else if (variation === 'start') {\n    return 'end';\n  }\n  return variation;\n}\n","import getClientRect from '../utils/getClientRect';\nimport getOppositePlacement from '../utils/getOppositePlacement';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function inner(data) {\n  const placement = data.placement;\n  const basePlacement = placement.split('-')[0];\n  const { popper, reference } = data.offsets;\n  const isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;\n\n  const subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;\n\n  popper[isHoriz ? 'left' : 'top'] =\n    reference[basePlacement] -\n    (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);\n\n  data.placement = getOppositePlacement(placement);\n  data.offsets.popper = getClientRect(popper);\n\n  return data;\n}\n","import isModifierRequired from '../utils/isModifierRequired';\nimport find from '../utils/find';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function hide(data) {\n  if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {\n    return data;\n  }\n\n  const refRect = data.offsets.reference;\n  const bound = find(\n    data.instance.modifiers,\n    modifier => modifier.name === 'preventOverflow'\n  ).boundaries;\n\n  if (\n    refRect.bottom < bound.top ||\n    refRect.left > bound.right ||\n    refRect.top > bound.bottom ||\n    refRect.right < bound.left\n  ) {\n    // Avoid unnecessary DOM access if visibility hasn't changed\n    if (data.hide === true) {\n      return data;\n    }\n\n    data.hide = true;\n    data.attributes['x-out-of-boundaries'] = '';\n  } else {\n    // Avoid unnecessary DOM access if visibility hasn't changed\n    if (data.hide === false) {\n      return data;\n    }\n\n    data.hide = false;\n    data.attributes['x-out-of-boundaries'] = false;\n  }\n\n  return data;\n}\n","/**\n * @function\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Boolean} shouldRound - If the offsets should be rounded at all\n * @returns {Object} The popper's position offsets rounded\n *\n * The tale of pixel-perfect positioning. It's still not 100% perfect, but as\n * good as it can be within reason.\n * Discussion here: https://github.com/FezVrasta/popper.js/pull/715\n *\n * Low DPI screens cause a popper to be blurry if not using full pixels (Safari\n * as well on High DPI screens).\n *\n * Firefox prefers no rounding for positioning and does not have blurriness on\n * high DPI screens.\n *\n * Only horizontal placement and left/right values need to be considered.\n */\nexport default function getRoundedOffsets(data, shouldRound) {\n  const { popper, reference } = data.offsets;\n  const { round, floor } = Math;\n  const noRound = v => v;\n  \n  const referenceWidth = round(reference.width);\n  const popperWidth = round(popper.width);\n  \n  const isVertical = ['left', 'right'].indexOf(data.placement) !== -1;\n  const isVariation = data.placement.indexOf('-') !== -1;\n  const sameWidthParity = referenceWidth % 2 === popperWidth % 2;\n  const bothOddWidth = referenceWidth % 2 === 1 && popperWidth % 2 === 1;\n\n  const horizontalToInteger = !shouldRound\n    ? noRound\n    : isVertical || isVariation || sameWidthParity\n    ? round\n    : floor;\n  const verticalToInteger = !shouldRound ? noRound : round;\n\n  return {\n    left: horizontalToInteger(\n      bothOddWidth && !isVariation && shouldRound\n        ? popper.left - 1\n        : popper.left\n    ),\n    top: verticalToInteger(popper.top),\n    bottom: verticalToInteger(popper.bottom),\n    right: horizontalToInteger(popper.right),\n  };\n}\n","import setStyles from '../utils/setStyles';\nimport setAttributes from '../utils/setAttributes';\nimport getReferenceOffsets from '../utils/getReferenceOffsets';\nimport computeAutoPlacement from '../utils/computeAutoPlacement';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} data.styles - List of style properties - values to apply to popper element\n * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The same data object\n */\nexport default function applyStyle(data) {\n  // any property present in `data.styles` will be applied to the popper,\n  // in this way we can make the 3rd party modifiers add custom styles to it\n  // Be aware, modifiers could override the properties defined in the previous\n  // lines of this modifier!\n  setStyles(data.instance.popper, data.styles);\n\n  // any property present in `data.attributes` will be applied to the popper,\n  // they will be set as HTML attributes of the element\n  setAttributes(data.instance.popper, data.attributes);\n\n  // if arrowElement is defined and arrowStyles has some properties\n  if (data.arrowElement && Object.keys(data.arrowStyles).length) {\n    setStyles(data.arrowElement, data.arrowStyles);\n  }\n\n  return data;\n}\n\n/**\n * Set the x-placement attribute before everything else because it could be used\n * to add margins to the popper margins needs to be calculated to get the\n * correct popper offsets.\n * @method\n * @memberof Popper.modifiers\n * @param {HTMLElement} reference - The reference element used to position the popper\n * @param {HTMLElement} popper - The HTML element used as popper\n * @param {Object} options - Popper.js options\n */\nexport function applyStyleOnLoad(\n  reference,\n  popper,\n  options,\n  modifierOptions,\n  state\n) {\n  // compute reference element offsets\n  const referenceOffsets = getReferenceOffsets(state, popper, reference, options.positionFixed);\n\n  // compute auto placement, store placement inside the data object,\n  // modifiers will be able to edit `placement` if needed\n  // and refer to originalPlacement to know the original value\n  const placement = computeAutoPlacement(\n    options.placement,\n    referenceOffsets,\n    popper,\n    reference,\n    options.modifiers.flip.boundariesElement,\n    options.modifiers.flip.padding\n  );\n\n  popper.setAttribute('x-placement', placement);\n\n  // Apply `position` to popper before anything else because\n  // without the position applied we can't guarantee correct computations\n  setStyles(popper, { position: options.positionFixed ? 'fixed' : 'absolute' });\n\n  return options;\n}\n","/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setAttributes(element, attributes) {\n  Object.keys(attributes).forEach(function(prop) {\n    const value = attributes[prop];\n    if (value !== false) {\n      element.setAttribute(prop, attributes[prop]);\n    } else {\n      element.removeAttribute(prop);\n    }\n  });\n}\n","import modifiers from '../modifiers/index';\n\n/**\n * Default options provided to Popper.js constructor.<br />\n * These can be overridden using the `options` argument of Popper.js.<br />\n * To override an option, simply pass an object with the same\n * structure of the `options` object, as the 3rd argument. For example:\n * ```\n * new Popper(ref, pop, {\n *   modifiers: {\n *     preventOverflow: { enabled: false }\n *   }\n * })\n * ```\n * @type {Object}\n * @static\n * @memberof Popper\n */\nexport default {\n  /**\n   * Popper's placement.\n   * @prop {Popper.placements} placement='bottom'\n   */\n  placement: 'bottom',\n\n  /**\n   * Set this to true if you want popper to position it self in 'fixed' mode\n   * @prop {Boolean} positionFixed=false\n   */\n  positionFixed: false,\n\n  /**\n   * Whether events (resize, scroll) are initially enabled.\n   * @prop {Boolean} eventsEnabled=true\n   */\n  eventsEnabled: true,\n\n  /**\n   * Set to true if you want to automatically remove the popper when\n   * you call the `destroy` method.\n   * @prop {Boolean} removeOnDestroy=false\n   */\n  removeOnDestroy: false,\n\n  /**\n   * Callback called when the popper is created.<br />\n   * By default, it is set to no-op.<br />\n   * Access Popper.js instance with `data.instance`.\n   * @prop {onCreate}\n   */\n  onCreate: () => {},\n\n  /**\n   * Callback called when the popper is updated. This callback is not called\n   * on the initialization/creation of the popper, but only on subsequent\n   * updates.<br />\n   * By default, it is set to no-op.<br />\n   * Access Popper.js instance with `data.instance`.\n   * @prop {onUpdate}\n   */\n  onUpdate: () => {},\n\n  /**\n   * List of modifiers used to modify the offsets before they are applied to the popper.\n   * They provide most of the functionalities of Popper.js.\n   * @prop {modifiers}\n   */\n  modifiers,\n};\n\n/**\n * @callback onCreate\n * @param {dataObject} data\n */\n\n/**\n * @callback onUpdate\n * @param {dataObject} data\n */\n","// Utils\nimport debounce from './utils/debounce';\nimport isFunction from './utils/isFunction';\n\n// Methods\nimport update from './methods/update';\nimport destroy from './methods/destroy';\nimport enableEventListeners from './methods/enableEventListeners';\nimport disableEventListeners from './methods/disableEventListeners';\nimport Defaults from './methods/defaults';\nimport placements from './methods/placements';\n\nexport default class Popper {\n  /**\n   * Creates a new Popper.js instance.\n   * @class Popper\n   * @param {Element|referenceObject} reference - The reference element used to position the popper\n   * @param {Element} popper - The HTML / XML element used as the popper\n   * @param {Object} options - Your custom options to override the ones defined in [Defaults](#defaults)\n   * @return {Object} instance - The generated Popper.js instance\n   */\n  constructor(reference, popper, options = {}) {\n    // make update() debounced, so that it only runs at most once-per-tick\n    this.update = debounce(this.update.bind(this));\n\n    // with {} we create a new object with the options inside it\n    this.options = { ...Popper.Defaults, ...options };\n\n    // init state\n    this.state = {\n      isDestroyed: false,\n      isCreated: false,\n      scrollParents: [],\n    };\n\n    // get reference and popper elements (allow jQuery wrappers)\n    this.reference = reference && reference.jquery ? reference[0] : reference;\n    this.popper = popper && popper.jquery ? popper[0] : popper;\n\n    // Deep merge modifiers options\n    this.options.modifiers = {};\n    Object.keys({\n      ...Popper.Defaults.modifiers,\n      ...options.modifiers,\n    }).forEach(name => {\n      this.options.modifiers[name] = {\n        // If it's a built-in modifier, use it as base\n        ...(Popper.Defaults.modifiers[name] || {}),\n        // If there are custom options, override and merge with default ones\n        ...(options.modifiers ? options.modifiers[name] : {}),\n      };\n    });\n\n    // Refactoring modifiers' list (Object => Array)\n    this.modifiers = Object.keys(this.options.modifiers)\n      .map(name => ({\n        name,\n        ...this.options.modifiers[name],\n      }))\n      // sort the modifiers by order\n      .sort((a, b) => a.order - b.order);\n\n    // modifiers have the ability to execute arbitrary code when Popper.js get inited\n    // such code is executed in the same order of its modifier\n    // they could add new properties to their options configuration\n    // BE AWARE: don't add options to `options.modifiers.name` but to `modifierOptions`!\n    this.modifiers.forEach(modifierOptions => {\n      if (modifierOptions.enabled && isFunction(modifierOptions.onLoad)) {\n        modifierOptions.onLoad(\n          this.reference,\n          this.popper,\n          this.options,\n          modifierOptions,\n          this.state\n        );\n      }\n    });\n\n    // fire the first update to position the popper in the right place\n    this.update();\n\n    const eventsEnabled = this.options.eventsEnabled;\n    if (eventsEnabled) {\n      // setup event listeners, they will take care of update the position in specific situations\n      this.enableEventListeners();\n    }\n\n    this.state.eventsEnabled = eventsEnabled;\n  }\n\n  // We can't use class properties because they don't get listed in the\n  // class prototype and break stuff like Sinon stubs\n  update() {\n    return update.call(this);\n  }\n  destroy() {\n    return destroy.call(this);\n  }\n  enableEventListeners() {\n    return enableEventListeners.call(this);\n  }\n  disableEventListeners() {\n    return disableEventListeners.call(this);\n  }\n\n  /**\n   * Schedules an update. It will run on the next UI update available.\n   * @method scheduleUpdate\n   * @memberof Popper\n   */\n  scheduleUpdate = () => requestAnimationFrame(this.update);\n\n  /**\n   * Collection of utilities useful when writing custom modifiers.\n   * Starting from version 1.7, this method is available only if you\n   * include `popper-utils.js` before `popper.js`.\n   *\n   * **DEPRECATION**: This way to access PopperUtils is deprecated\n   * and will be removed in v2! Use the PopperUtils module directly instead.\n   * Due to the high instability of the methods contained in Utils, we can't\n   * guarantee them to follow semver. Use them at your own risk!\n   * @static\n   * @private\n   * @type {Object}\n   * @deprecated since version 1.8\n   * @member Utils\n   * @memberof Popper\n   */\n  static Utils = (typeof window !== 'undefined' ? window : global).PopperUtils;\n\n  static placements = placements;\n\n  static Defaults = Defaults;\n}\n\n/**\n * The `referenceObject` is an object that provides an interface compatible with Popper.js\n * and lets you use it as replacement of a real DOM node.<br />\n * You can use this method to position a popper relatively to a set of coordinates\n * in case you don't have a DOM node to use as reference.\n *\n * ```\n * new Popper(referenceObject, popperNode);\n * ```\n *\n * NB: This feature isn't supported in Internet Explorer 10.\n * @name referenceObject\n * @property {Function} data.getBoundingClientRect\n * A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method.\n * @property {number} data.clientWidth\n * An ES6 getter that will return the width of the virtual reference element.\n * @property {number} data.clientHeight\n * An ES6 getter that will return the height of the virtual reference element.\n */\n","'use strict';\n\nif (process.env.NODE_ENV === 'production') {\n  module.exports = require('./cjs/react-is.production.min.js');\n} else {\n  module.exports = require('./cjs/react-is.development.js');\n}\n","\"use strict\";\n\nvar compose = require('redux').compose;\n\nexports.__esModule = true;\nexports.composeWithDevTools = (\n  process.env.NODE_ENV !== 'production' && typeof window !== 'undefined' &&\n  window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__ ?\n    window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__ :\n    function() {\n      if (arguments.length === 0) return undefined;\n      if (typeof arguments[0] === 'object') return compose;\n      return compose.apply(null, arguments);\n    }\n);\n\nexports.devToolsEnhancer = (\n  process.env.NODE_ENV !== 'production' && typeof window !== 'undefined' &&\n  window.__REDUX_DEVTOOLS_EXTENSION__ ?\n    window.__REDUX_DEVTOOLS_EXTENSION__ :\n    function() { return function(noop) { return noop; } }\n);\n","export default function symbolObservablePonyfill(root) {\n\tvar result;\n\tvar Symbol = root.Symbol;\n\n\tif (typeof Symbol === 'function') {\n\t\tif (Symbol.observable) {\n\t\t\tresult = Symbol.observable;\n\t\t} else {\n\t\t\tresult = Symbol('observable');\n\t\t\tSymbol.observable = result;\n\t\t}\n\t} else {\n\t\tresult = '@@observable';\n\t}\n\n\treturn result;\n};\n","function createThunkMiddleware(extraArgument) {\n  return function (_ref) {\n    var dispatch = _ref.dispatch,\n        getState = _ref.getState;\n    return function (next) {\n      return function (action) {\n        if (typeof action === 'function') {\n          return action(dispatch, getState, extraArgument);\n        }\n\n        return next(action);\n      };\n    };\n  };\n}\n\nvar thunk = createThunkMiddleware();\nthunk.withExtraArgument = createThunkMiddleware;\n\nexport default thunk;","!function(e,t){\"object\"==typeof exports&&\"undefined\"!=typeof module?t(exports):\"function\"==typeof define&&define.amd?define([\"exports\"],t):t(e.reduxLogger=e.reduxLogger||{})}(this,function(e){\"use strict\";function t(e,t){e.super_=t,e.prototype=Object.create(t.prototype,{constructor:{value:e,enumerable:!1,writable:!0,configurable:!0}})}function r(e,t){Object.defineProperty(this,\"kind\",{value:e,enumerable:!0}),t&&t.length&&Object.defineProperty(this,\"path\",{value:t,enumerable:!0})}function n(e,t,r){n.super_.call(this,\"E\",e),Object.defineProperty(this,\"lhs\",{value:t,enumerable:!0}),Object.defineProperty(this,\"rhs\",{value:r,enumerable:!0})}function o(e,t){o.super_.call(this,\"N\",e),Object.defineProperty(this,\"rhs\",{value:t,enumerable:!0})}function i(e,t){i.super_.call(this,\"D\",e),Object.defineProperty(this,\"lhs\",{value:t,enumerable:!0})}function 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e?\"undefined\":N(e),v=\"undefined\"==typeof t?\"undefined\":N(t),b=\"undefined\"!==y||p&&p[p.length-1].lhs&&p[p.length-1].lhs.hasOwnProperty(d),m=\"undefined\"!==v||p&&p[p.length-1].rhs&&p[p.length-1].rhs.hasOwnProperty(d);if(!b&&m)r(new o(g,t));else if(!m&&b)r(new i(g,e));else if(u(e)!==u(t))r(new n(g,e,t));else if(\"date\"===u(e)&&e-t!==0)r(new n(g,e,t));else if(\"object\"===y&&null!==e&&null!==t)if(p.filter(function(t){return t.lhs===e}).length)e!==t&&r(new n(g,e,t));else{if(p.push({lhs:e,rhs:t}),Array.isArray(e)){var w;e.length;for(w=0;w<e.length;w++)w>=t.length?r(new a(g,w,new i(void 0,e[w]))):l(e[w],t[w],r,c,g,w,p);for(;w<t.length;)r(new a(g,w,new o(void 0,t[w++])))}else{var x=Object.keys(e),S=Object.keys(t);x.forEach(function(n,o){var i=S.indexOf(n);i>=0?(l(e[n],t[n],r,c,g,n,p),S=f(S,i)):l(e[n],void 0,r,c,g,n,p)}),S.forEach(function(e){l(void 0,t[e],r,c,g,e,p)})}p.length=p.length-1}else e!==t&&(\"number\"===y&&isNaN(e)&&isNaN(t)||r(new n(g,e,t)))}function c(e,t,r,n){return n=n||[],l(e,t,function(e){e&&n.push(e)},r),n.length?n:void 0}function s(e,t,r){if(r.path&&r.path.length){var n,o=e[t],i=r.path.length-1;for(n=0;n<i;n++)o=o[r.path[n]];switch(r.kind){case\"A\":s(o[r.path[n]],r.index,r.item);break;case\"D\":delete o[r.path[n]];break;case\"E\":case\"N\":o[r.path[n]]=r.rhs}}else switch(r.kind){case\"A\":s(e[t],r.index,r.item);break;case\"D\":e=f(e,t);break;case\"E\":case\"N\":e[t]=r.rhs}return e}function d(e,t,r){if(e&&t&&r&&r.kind){for(var n=e,o=-1,i=r.path?r.path.length-1:0;++o<i;)\"undefined\"==typeof n[r.path[o]]&&(n[r.path[o]]=\"number\"==typeof r.path[o]?[]:{}),n=n[r.path[o]];switch(r.kind){case\"A\":s(r.path?n[r.path[o]]:n,r.index,r.item);break;case\"D\":delete n[r.path[o]];break;case\"E\":case\"N\":n[r.path[o]]=r.rhs}}}function p(e,t,r){if(r.path&&r.path.length){var n,o=e[t],i=r.path.length-1;for(n=0;n<i;n++)o=o[r.path[n]];switch(r.kind){case\"A\":p(o[r.path[n]],r.index,r.item);break;case\"D\":o[r.path[n]]=r.lhs;break;case\"E\":o[r.path[n]]=r.lhs;break;case\"N\":delete o[r.path[n]]}}else switch(r.kind){case\"A\":p(e[t],r.index,r.item);break;case\"D\":e[t]=r.lhs;break;case\"E\":e[t]=r.lhs;break;case\"N\":e=f(e,t)}return e}function g(e,t,r){if(e&&t&&r&&r.kind){var n,o,i=e;for(o=r.path.length-1,n=0;n<o;n++)\"undefined\"==typeof i[r.path[n]]&&(i[r.path[n]]={}),i=i[r.path[n]];switch(r.kind){case\"A\":p(i[r.path[n]],r.index,r.item);break;case\"D\":i[r.path[n]]=r.lhs;break;case\"E\":i[r.path[n]]=r.lhs;break;case\"N\":delete i[r.path[n]]}}}function h(e,t,r){if(e&&t){var n=function(n){r&&!r(e,t,n)||d(e,t,n)};l(e,t,n)}}function y(e){return\"color: \"+F[e].color+\"; font-weight: bold\"}function v(e){var t=e.kind,r=e.path,n=e.lhs,o=e.rhs,i=e.index,a=e.item;switch(t){case\"E\":return[r.join(\".\"),n,\"→\",o];case\"N\":return[r.join(\".\"),o];case\"D\":return[r.join(\".\")];case\"A\":return[r.join(\".\")+\"[\"+i+\"]\",a];default:return[]}}function b(e,t,r,n){var o=c(e,t);try{n?r.groupCollapsed(\"diff\"):r.group(\"diff\")}catch(e){r.log(\"diff\")}o?o.forEach(function(e){var t=e.kind,n=v(e);r.log.apply(r,[\"%c \"+F[t].text,y(t)].concat(P(n)))}):r.log(\"—— no diff ——\");try{r.groupEnd()}catch(e){r.log(\"—— diff end —— \")}}function m(e,t,r,n){switch(\"undefined\"==typeof e?\"undefined\":N(e)){case\"object\":return\"function\"==typeof e[n]?e[n].apply(e,P(r)):e[n];case\"function\":return e(t);default:return e}}function w(e){var t=e.timestamp,r=e.duration;return function(e,n,o){var i=[\"action\"];return i.push(\"%c\"+String(e.type)),t&&i.push(\"%c@ \"+n),r&&i.push(\"%c(in \"+o.toFixed(2)+\" ms)\"),i.join(\" \")}}function x(e,t){var r=t.logger,n=t.actionTransformer,o=t.titleFormatter,i=void 0===o?w(t):o,a=t.collapsed,f=t.colors,u=t.level,l=t.diff,c=\"undefined\"==typeof t.titleFormatter;e.forEach(function(o,s){var d=o.started,p=o.startedTime,g=o.action,h=o.prevState,y=o.error,v=o.took,w=o.nextState,x=e[s+1];x&&(w=x.prevState,v=x.started-d);var S=n(g),k=\"function\"==typeof a?a(function(){return w},g,o):a,j=D(p),E=f.title?\"color: \"+f.title(S)+\";\":\"\",A=[\"color: gray; font-weight: lighter;\"];A.push(E),t.timestamp&&A.push(\"color: gray; font-weight: lighter;\"),t.duration&&A.push(\"color: gray; font-weight: lighter;\");var O=i(S,j,v);try{k?f.title&&c?r.groupCollapsed.apply(r,[\"%c \"+O].concat(A)):r.groupCollapsed(O):f.title&&c?r.group.apply(r,[\"%c \"+O].concat(A)):r.group(O)}catch(e){r.log(O)}var N=m(u,S,[h],\"prevState\"),P=m(u,S,[S],\"action\"),C=m(u,S,[y,h],\"error\"),F=m(u,S,[w],\"nextState\");if(N)if(f.prevState){var L=\"color: \"+f.prevState(h)+\"; font-weight: bold\";r[N](\"%c prev state\",L,h)}else r[N](\"prev state\",h);if(P)if(f.action){var T=\"color: \"+f.action(S)+\"; font-weight: bold\";r[P](\"%c action    \",T,S)}else r[P](\"action    \",S);if(y&&C)if(f.error){var M=\"color: \"+f.error(y,h)+\"; font-weight: bold;\";r[C](\"%c error     \",M,y)}else r[C](\"error     \",y);if(F)if(f.nextState){var _=\"color: \"+f.nextState(w)+\"; font-weight: bold\";r[F](\"%c next state\",_,w)}else r[F](\"next state\",w);l&&b(h,w,r,k);try{r.groupEnd()}catch(e){r.log(\"—— log end ——\")}})}function S(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},t=Object.assign({},L,e),r=t.logger,n=t.stateTransformer,o=t.errorTransformer,i=t.predicate,a=t.logErrors,f=t.diffPredicate;if(\"undefined\"==typeof r)return function(){return function(e){return function(t){return e(t)}}};if(e.getState&&e.dispatch)return console.error(\"[redux-logger] redux-logger not installed. Make sure to pass logger instance as middleware:\\n// Logger with default options\\nimport { logger } from 'redux-logger'\\nconst store = createStore(\\n  reducer,\\n  applyMiddleware(logger)\\n)\\n// Or you can create your own logger with custom options http://bit.ly/redux-logger-options\\nimport createLogger from 'redux-logger'\\nconst logger = createLogger({\\n  // ...options\\n});\\nconst store = createStore(\\n  reducer,\\n  applyMiddleware(logger)\\n)\\n\"),function(){return function(e){return function(t){return e(t)}}};var u=[];return function(e){var r=e.getState;return function(e){return function(l){if(\"function\"==typeof i&&!i(r,l))return e(l);var c={};u.push(c),c.started=O.now(),c.startedTime=new Date,c.prevState=n(r()),c.action=l;var s=void 0;if(a)try{s=e(l)}catch(e){c.error=o(e)}else s=e(l);c.took=O.now()-c.started,c.nextState=n(r());var d=t.diff&&\"function\"==typeof f?f(r,l):t.diff;if(x(u,Object.assign({},t,{diff:d})),u.length=0,c.error)throw c.error;return s}}}}var k,j,E=function(e,t){return new Array(t+1).join(e)},A=function(e,t){return E(\"0\",t-e.toString().length)+e},D=function(e){return A(e.getHours(),2)+\":\"+A(e.getMinutes(),2)+\":\"+A(e.getSeconds(),2)+\".\"+A(e.getMilliseconds(),3)},O=\"undefined\"!=typeof performance&&null!==performance&&\"function\"==typeof performance.now?performance:Date,N=\"function\"==typeof Symbol&&\"symbol\"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&\"function\"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?\"symbol\":typeof e},P=function(e){if(Array.isArray(e)){for(var t=0,r=Array(e.length);t<e.length;t++)r[t]=e[t];return r}return Array.from(e)},C=[];k=\"object\"===(\"undefined\"==typeof global?\"undefined\":N(global))&&global?global:\"undefined\"!=typeof window?window:{},j=k.DeepDiff,j&&C.push(function(){\"undefined\"!=typeof j&&k.DeepDiff===c&&(k.DeepDiff=j,j=void 0)}),t(n,r),t(o,r),t(i,r),t(a,r),Object.defineProperties(c,{diff:{value:c,enumerable:!0},observableDiff:{value:l,enumerable:!0},applyDiff:{value:h,enumerable:!0},applyChange:{value:d,enumerable:!0},revertChange:{value:g,enumerable:!0},isConflict:{value:function(){return\"undefined\"!=typeof j},enumerable:!0},noConflict:{value:function(){return C&&(C.forEach(function(e){e()}),C=null),c},enumerable:!0}});var F={E:{color:\"#2196F3\",text:\"CHANGED:\"},N:{color:\"#4CAF50\",text:\"ADDED:\"},D:{color:\"#F44336\",text:\"DELETED:\"},A:{color:\"#2196F3\",text:\"ARRAY:\"}},L={level:\"log\",logger:console,logErrors:!0,collapsed:void 0,predicate:void 0,duration:!1,timestamp:!0,stateTransformer:function(e){return e},actionTransformer:function(e){return e},errorTransformer:function(e){return e},colors:{title:function(){return\"inherit\"},prevState:function(){return\"#9E9E9E\"},action:function(){return\"#03A9F4\"},nextState:function(){return\"#4CAF50\"},error:function(){return\"#F20404\"}},diff:!1,diffPredicate:void 0,transformer:void 0},T=function(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},t=e.dispatch,r=e.getState;return\"function\"==typeof t||\"function\"==typeof r?S()({dispatch:t,getState:r}):void console.error(\"\\n[redux-logger v3] BREAKING CHANGE\\n[redux-logger v3] Since 3.0.0 redux-logger exports by default logger with default settings.\\n[redux-logger v3] Change\\n[redux-logger v3] import createLogger from 'redux-logger'\\n[redux-logger v3] to\\n[redux-logger v3] import { createLogger } from 'redux-logger'\\n\")};e.defaults=L,e.createLogger=S,e.logger=T,e.default=T,Object.defineProperty(e,\"__esModule\",{value:!0})});\n","import React from 'react';\nexport var ReactReduxContext = /*#__PURE__*/React.createContext(null);\n\nif (process.env.NODE_ENV !== 'production') {\n  ReactReduxContext.displayName = 'ReactRedux';\n}\n\nexport default ReactReduxContext;","// Default to a dummy \"batch\" implementation that just runs the callback\nfunction defaultNoopBatch(callback) {\n  callback();\n}\n\nvar batch = defaultNoopBatch; // Allow injecting another batching function later\n\nexport var setBatch = function setBatch(newBatch) {\n  return batch = newBatch;\n}; // Supply a getter just to skip dealing with ESM bindings\n\nexport var getBatch = function getBatch() {\n  return batch;\n};","import { getBatch } from './batch'; // encapsulates the subscription logic for connecting a component to the redux store, as\n// well as nesting subscriptions of descendant components, so that we can ensure the\n// ancestor components re-render before descendants\n\nfunction createListenerCollection() {\n  var batch = getBatch();\n  var first = null;\n  var last = null;\n  return {\n    clear: function clear() {\n      first = null;\n      last = null;\n    },\n    notify: function notify() {\n      batch(function () {\n        var listener = first;\n\n        while (listener) {\n          listener.callback();\n          listener = listener.next;\n        }\n      });\n    },\n    get: function get() {\n      var listeners = [];\n      var listener = first;\n\n      while (listener) {\n        listeners.push(listener);\n        listener = listener.next;\n      }\n\n      return listeners;\n    },\n    subscribe: function subscribe(callback) {\n      var isSubscribed = true;\n      var listener = last = {\n        callback: callback,\n        next: null,\n        prev: last\n      };\n\n      if (listener.prev) {\n        listener.prev.next = listener;\n      } else {\n        first = listener;\n      }\n\n      return function unsubscribe() {\n        if (!isSubscribed || first === null) return;\n        isSubscribed = false;\n\n        if (listener.next) {\n          listener.next.prev = listener.prev;\n        } else {\n          last = listener.prev;\n        }\n\n        if (listener.prev) {\n          listener.prev.next = listener.next;\n        } else {\n          first = listener.next;\n        }\n      };\n    }\n  };\n}\n\nvar nullListeners = {\n  notify: function notify() {},\n  get: function get() {\n    return [];\n  }\n};\nexport function createSubscription(store, parentSub) {\n  var unsubscribe;\n  var listeners = nullListeners;\n\n  function addNestedSub(listener) {\n    trySubscribe();\n    return listeners.subscribe(listener);\n  }\n\n  function notifyNestedSubs() {\n    listeners.notify();\n  }\n\n  function handleChangeWrapper() {\n    if (subscription.onStateChange) {\n      subscription.onStateChange();\n    }\n  }\n\n  function isSubscribed() {\n    return Boolean(unsubscribe);\n  }\n\n  function trySubscribe() {\n    if (!unsubscribe) {\n      unsubscribe = parentSub ? parentSub.addNestedSub(handleChangeWrapper) : store.subscribe(handleChangeWrapper);\n      listeners = createListenerCollection();\n    }\n  }\n\n  function tryUnsubscribe() {\n    if (unsubscribe) {\n      unsubscribe();\n      unsubscribe = undefined;\n      listeners.clear();\n      listeners = nullListeners;\n    }\n  }\n\n  var subscription = {\n    addNestedSub: addNestedSub,\n    notifyNestedSubs: notifyNestedSubs,\n    handleChangeWrapper: handleChangeWrapper,\n    isSubscribed: isSubscribed,\n    trySubscribe: trySubscribe,\n    tryUnsubscribe: tryUnsubscribe,\n    getListeners: function getListeners() {\n      return listeners;\n    }\n  };\n  return subscription;\n}","import { useEffect, useLayoutEffect } from 'react'; // React currently throws a warning when using useLayoutEffect on the server.\n// To get around it, we can conditionally useEffect on the server (no-op) and\n// useLayoutEffect in the browser. We need useLayoutEffect to ensure the store\n// subscription callback always has the selector from the latest render commit\n// available, otherwise a store update may happen between render and the effect,\n// which may cause missed updates; we also must ensure the store subscription\n// is created synchronously, otherwise a store update may occur before the\n// subscription is created and an inconsistent state may be observed\n\nexport var useIsomorphicLayoutEffect = typeof window !== 'undefined' && typeof window.document !== 'undefined' && typeof window.document.createElement !== 'undefined' ? useLayoutEffect : useEffect;","import React, { useMemo } from 'react';\nimport PropTypes from 'prop-types';\nimport { ReactReduxContext } from './Context';\nimport { createSubscription } from '../utils/Subscription';\nimport { useIsomorphicLayoutEffect } from '../utils/useIsomorphicLayoutEffect';\n\nfunction Provider(_ref) {\n  var store = _ref.store,\n      context = _ref.context,\n      children = _ref.children;\n  var contextValue = useMemo(function () {\n    var subscription = createSubscription(store);\n    subscription.onStateChange = subscription.notifyNestedSubs;\n    return {\n      store: store,\n      subscription: subscription\n    };\n  }, [store]);\n  var previousState = useMemo(function () {\n    return store.getState();\n  }, [store]);\n  useIsomorphicLayoutEffect(function () {\n    var subscription = contextValue.subscription;\n    subscription.trySubscribe();\n\n    if (previousState !== store.getState()) {\n      subscription.notifyNestedSubs();\n    }\n\n    return function () {\n      subscription.tryUnsubscribe();\n      subscription.onStateChange = null;\n    };\n  }, [contextValue, previousState]);\n  var Context = context || ReactReduxContext;\n  return /*#__PURE__*/React.createElement(Context.Provider, {\n    value: contextValue\n  }, children);\n}\n\nif (process.env.NODE_ENV !== 'production') {\n  Provider.propTypes = {\n    store: PropTypes.shape({\n      subscribe: PropTypes.func.isRequired,\n      dispatch: PropTypes.func.isRequired,\n      getState: PropTypes.func.isRequired\n    }),\n    context: PropTypes.object,\n    children: PropTypes.any\n  };\n}\n\nexport default Provider;","import { useReducer, useRef, useMemo, useContext, useDebugValue } from 'react';\nimport { useReduxContext as useDefaultReduxContext } from './useReduxContext';\nimport { createSubscription } from '../utils/Subscription';\nimport { useIsomorphicLayoutEffect } from '../utils/useIsomorphicLayoutEffect';\nimport { ReactReduxContext } from '../components/Context';\n\nvar refEquality = function refEquality(a, b) {\n  return a === b;\n};\n\nfunction useSelectorWithStoreAndSubscription(selector, equalityFn, store, contextSub) {\n  var _useReducer = useReducer(function (s) {\n    return s + 1;\n  }, 0),\n      forceRender = _useReducer[1];\n\n  var subscription = useMemo(function () {\n    return createSubscription(store, contextSub);\n  }, [store, contextSub]);\n  var latestSubscriptionCallbackError = useRef();\n  var latestSelector = useRef();\n  var latestStoreState = useRef();\n  var latestSelectedState = useRef();\n  var storeState = store.getState();\n  var selectedState;\n\n  try {\n    if (selector !== latestSelector.current || storeState !== latestStoreState.current || latestSubscriptionCallbackError.current) {\n      var newSelectedState = selector(storeState); // ensure latest selected state is reused so that a custom equality function can result in identical references\n\n      if (latestSelectedState.current === undefined || !equalityFn(newSelectedState, latestSelectedState.current)) {\n        selectedState = newSelectedState;\n      } else {\n        selectedState = latestSelectedState.current;\n      }\n    } else {\n      selectedState = latestSelectedState.current;\n    }\n  } catch (err) {\n    if (latestSubscriptionCallbackError.current) {\n      err.message += \"\\nThe error may be correlated with this previous error:\\n\" + latestSubscriptionCallbackError.current.stack + \"\\n\\n\";\n    }\n\n    throw err;\n  }\n\n  useIsomorphicLayoutEffect(function () {\n    latestSelector.current = selector;\n    latestStoreState.current = storeState;\n    latestSelectedState.current = selectedState;\n    latestSubscriptionCallbackError.current = undefined;\n  });\n  useIsomorphicLayoutEffect(function () {\n    function checkForUpdates() {\n      try {\n        var newStoreState = store.getState(); // Avoid calling selector multiple times if the store's state has not changed\n\n        if (newStoreState === latestStoreState.current) {\n          return;\n        }\n\n        var _newSelectedState = latestSelector.current(newStoreState);\n\n        if (equalityFn(_newSelectedState, latestSelectedState.current)) {\n          return;\n        }\n\n        latestSelectedState.current = _newSelectedState;\n        latestStoreState.current = newStoreState;\n      } catch (err) {\n        // we ignore all errors here, since when the component\n        // is re-rendered, the selectors are called again, and\n        // will throw again, if neither props nor store state\n        // changed\n        latestSubscriptionCallbackError.current = err;\n      }\n\n      forceRender();\n    }\n\n    subscription.onStateChange = checkForUpdates;\n    subscription.trySubscribe();\n    checkForUpdates();\n    return function () {\n      return subscription.tryUnsubscribe();\n    };\n  }, [store, subscription]);\n  return selectedState;\n}\n/**\n * Hook factory, which creates a `useSelector` hook bound to a given context.\n *\n * @param {React.Context} [context=ReactReduxContext] Context passed to your `<Provider>`.\n * @returns {Function} A `useSelector` hook bound to the specified context.\n */\n\n\nexport function createSelectorHook(context) {\n  if (context === void 0) {\n    context = ReactReduxContext;\n  }\n\n  var useReduxContext = context === ReactReduxContext ? useDefaultReduxContext : function () {\n    return useContext(context);\n  };\n  return function useSelector(selector, equalityFn) {\n    if (equalityFn === void 0) {\n      equalityFn = refEquality;\n    }\n\n    if (process.env.NODE_ENV !== 'production') {\n      if (!selector) {\n        throw new Error(\"You must pass a selector to useSelector\");\n      }\n\n      if (typeof selector !== 'function') {\n        throw new Error(\"You must pass a function as a selector to useSelector\");\n      }\n\n      if (typeof equalityFn !== 'function') {\n        throw new Error(\"You must pass a function as an equality function to useSelector\");\n      }\n    }\n\n    var _useReduxContext = useReduxContext(),\n        store = _useReduxContext.store,\n        contextSub = _useReduxContext.subscription;\n\n    var selectedState = useSelectorWithStoreAndSubscription(selector, equalityFn, store, contextSub);\n    useDebugValue(selectedState);\n    return selectedState;\n  };\n}\n/**\n * A hook to access the redux store's state. This hook takes a selector function\n * as an argument. The selector is called with the store state.\n *\n * This hook takes an optional equality comparison function as the second parameter\n * that allows you to customize the way the selected state is compared to determine\n * whether the component needs to be re-rendered.\n *\n * @param {Function} selector the selector function\n * @param {Function=} equalityFn the function that will be used to determine equality\n *\n * @returns {any} the selected state\n *\n * @example\n *\n * import React from 'react'\n * import { useSelector } from 'react-redux'\n *\n * export const CounterComponent = () => {\n *   const counter = useSelector(state => state.counter)\n *   return <div>{counter}</div>\n * }\n */\n\nexport var useSelector = /*#__PURE__*/createSelectorHook();","export * from './exports';\nimport { unstable_batchedUpdates as batch } from './utils/reactBatchedUpdates';\nimport { setBatch } from './utils/batch'; // Enable batched updates in our subscriptions for use\n// with standard React renderers (ReactDOM, React Native)\n\nsetBatch(batch);\nexport { batch };","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\n// Sorted ASC by size. That's important.\n// It can't be configured as it's used statically for propTypes.\nexport var keys = ['xs', 'sm', 'md', 'lg', 'xl']; // Keep in mind that @media is inclusive by the CSS specification.\n\nexport default function createBreakpoints(breakpoints) {\n  var _breakpoints$values = breakpoints.values,\n      values = _breakpoints$values === void 0 ? {\n    xs: 0,\n    sm: 600,\n    md: 960,\n    lg: 1280,\n    xl: 1920\n  } : _breakpoints$values,\n      _breakpoints$unit = breakpoints.unit,\n      unit = _breakpoints$unit === void 0 ? 'px' : _breakpoints$unit,\n      _breakpoints$step = breakpoints.step,\n      step = _breakpoints$step === void 0 ? 5 : _breakpoints$step,\n      other = _objectWithoutProperties(breakpoints, [\"values\", \"unit\", \"step\"]);\n\n  function up(key) {\n    var value = typeof values[key] === 'number' ? values[key] : key;\n    return \"@media (min-width:\".concat(value).concat(unit, \")\");\n  }\n\n  function down(key) {\n    var endIndex = keys.indexOf(key) + 1;\n    var upperbound = values[keys[endIndex]];\n\n    if (endIndex === keys.length) {\n      // xl down applies to all sizes\n      return up('xs');\n    }\n\n    var value = typeof upperbound === 'number' && endIndex > 0 ? upperbound : key;\n    return \"@media (max-width:\".concat(value - step / 100).concat(unit, \")\");\n  }\n\n  function between(start, end) {\n    var endIndex = keys.indexOf(end);\n\n    if (endIndex === keys.length - 1) {\n      return up(start);\n    }\n\n    return \"@media (min-width:\".concat(typeof values[start] === 'number' ? values[start] : start).concat(unit, \") and \") + \"(max-width:\".concat((endIndex !== -1 && typeof values[keys[endIndex + 1]] === 'number' ? values[keys[endIndex + 1]] : end) - step / 100).concat(unit, \")\");\n  }\n\n  function only(key) {\n    return between(key, key);\n  }\n\n  var warnedOnce = false;\n\n  function width(key) {\n    if (process.env.NODE_ENV !== 'production') {\n      if (!warnedOnce) {\n        warnedOnce = true;\n        console.warn([\"Material-UI: The `theme.breakpoints.width` utility is deprecated because it's redundant.\", 'Use the `theme.breakpoints.values` instead.'].join('\\n'));\n      }\n    }\n\n    return values[key];\n  }\n\n  return _extends({\n    keys: keys,\n    values: values,\n    up: up,\n    down: down,\n    between: between,\n    only: only,\n    width: width\n  }, other);\n}","import _defineProperty from \"@babel/runtime/helpers/esm/defineProperty\";\nimport _extends from \"@babel/runtime/helpers/esm/extends\";\nexport default function createMixins(breakpoints, spacing, mixins) {\n  var _toolbar;\n\n  return _extends({\n    gutters: function gutters() {\n      var styles = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n      console.warn(['Material-UI: theme.mixins.gutters() is deprecated.', 'You can use the source of the mixin directly:', \"\\n      paddingLeft: theme.spacing(2),\\n      paddingRight: theme.spacing(2),\\n      [theme.breakpoints.up('sm')]: {\\n        paddingLeft: theme.spacing(3),\\n        paddingRight: theme.spacing(3),\\n      },\\n      \"].join('\\n'));\n      return _extends({\n        paddingLeft: spacing(2),\n        paddingRight: spacing(2)\n      }, styles, _defineProperty({}, breakpoints.up('sm'), _extends({\n        paddingLeft: spacing(3),\n        paddingRight: spacing(3)\n      }, styles[breakpoints.up('sm')])));\n    },\n    toolbar: (_toolbar = {\n      minHeight: 56\n    }, _defineProperty(_toolbar, \"\".concat(breakpoints.up('xs'), \" and (orientation: landscape)\"), {\n      minHeight: 48\n    }), _defineProperty(_toolbar, breakpoints.up('sm'), {\n      minHeight: 64\n    }), _toolbar)\n  }, mixins);\n}","var common = {\n  black: '#000',\n  white: '#fff'\n};\nexport default common;","var grey = {\n  50: '#fafafa',\n  100: '#f5f5f5',\n  200: '#eeeeee',\n  300: '#e0e0e0',\n  400: '#bdbdbd',\n  500: '#9e9e9e',\n  600: '#757575',\n  700: '#616161',\n  800: '#424242',\n  900: '#212121',\n  A100: '#d5d5d5',\n  A200: '#aaaaaa',\n  A400: '#303030',\n  A700: '#616161'\n};\nexport default grey;","var indigo = {\n  50: '#e8eaf6',\n  100: '#c5cae9',\n  200: '#9fa8da',\n  300: '#7986cb',\n  400: '#5c6bc0',\n  500: '#3f51b5',\n  600: '#3949ab',\n  700: '#303f9f',\n  800: '#283593',\n  900: '#1a237e',\n  A100: '#8c9eff',\n  A200: '#536dfe',\n  A400: '#3d5afe',\n  A700: '#304ffe'\n};\nexport default indigo;","var pink = {\n  50: '#fce4ec',\n  100: '#f8bbd0',\n  200: '#f48fb1',\n  300: '#f06292',\n  400: '#ec407a',\n  500: '#e91e63',\n  600: '#d81b60',\n  700: '#c2185b',\n  800: '#ad1457',\n  900: '#880e4f',\n  A100: '#ff80ab',\n  A200: '#ff4081',\n  A400: '#f50057',\n  A700: '#c51162'\n};\nexport default pink;","var red = {\n  50: '#ffebee',\n  100: '#ffcdd2',\n  200: '#ef9a9a',\n  300: '#e57373',\n  400: '#ef5350',\n  500: '#f44336',\n  600: '#e53935',\n  700: '#d32f2f',\n  800: '#c62828',\n  900: '#b71c1c',\n  A100: '#ff8a80',\n  A200: '#ff5252',\n  A400: '#ff1744',\n  A700: '#d50000'\n};\nexport default red;","var orange = {\n  50: '#fff3e0',\n  100: '#ffe0b2',\n  200: '#ffcc80',\n  300: '#ffb74d',\n  400: '#ffa726',\n  500: '#ff9800',\n  600: '#fb8c00',\n  700: '#f57c00',\n  800: '#ef6c00',\n  900: '#e65100',\n  A100: '#ffd180',\n  A200: '#ffab40',\n  A400: '#ff9100',\n  A700: '#ff6d00'\n};\nexport default orange;","var blue = {\n  50: '#e3f2fd',\n  100: '#bbdefb',\n  200: '#90caf9',\n  300: '#64b5f6',\n  400: '#42a5f5',\n  500: '#2196f3',\n  600: '#1e88e5',\n  700: '#1976d2',\n  800: '#1565c0',\n  900: '#0d47a1',\n  A100: '#82b1ff',\n  A200: '#448aff',\n  A400: '#2979ff',\n  A700: '#2962ff'\n};\nexport default blue;","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport { formatMuiErrorMessage as _formatMuiErrorMessage } from \"@material-ui/utils\";\nimport { deepmerge } from '@material-ui/utils';\nimport common from '../colors/common';\nimport grey from '../colors/grey';\nimport indigo from '../colors/indigo';\nimport pink from '../colors/pink';\nimport red from '../colors/red';\nimport orange from '../colors/orange';\nimport blue from '../colors/blue';\nimport green from '../colors/green';\nimport { darken, getContrastRatio, lighten } from './colorManipulator';\nexport var light = {\n  // The colors used to style the text.\n  text: {\n    // The most important text.\n    primary: 'rgba(0, 0, 0, 0.87)',\n    // Secondary text.\n    secondary: 'rgba(0, 0, 0, 0.54)',\n    // Disabled text have even lower visual prominence.\n    disabled: 'rgba(0, 0, 0, 0.38)',\n    // Text hints.\n    hint: 'rgba(0, 0, 0, 0.38)'\n  },\n  // The color used to divide different elements.\n  divider: 'rgba(0, 0, 0, 0.12)',\n  // The background colors used to style the surfaces.\n  // Consistency between these values is important.\n  background: {\n    paper: common.white,\n    default: grey[50]\n  },\n  // The colors used to style the action elements.\n  action: {\n    // The color of an active action like an icon button.\n    active: 'rgba(0, 0, 0, 0.54)',\n    // The color of an hovered action.\n    hover: 'rgba(0, 0, 0, 0.04)',\n    hoverOpacity: 0.04,\n    // The color of a selected action.\n    selected: 'rgba(0, 0, 0, 0.08)',\n    selectedOpacity: 0.08,\n    // The color of a disabled action.\n    disabled: 'rgba(0, 0, 0, 0.26)',\n    // The background color of a disabled action.\n    disabledBackground: 'rgba(0, 0, 0, 0.12)',\n    disabledOpacity: 0.38,\n    focus: 'rgba(0, 0, 0, 0.12)',\n    focusOpacity: 0.12,\n    activatedOpacity: 0.12\n  }\n};\nexport var dark = {\n  text: {\n    primary: common.white,\n    secondary: 'rgba(255, 255, 255, 0.7)',\n    disabled: 'rgba(255, 255, 255, 0.5)',\n    hint: 'rgba(255, 255, 255, 0.5)',\n    icon: 'rgba(255, 255, 255, 0.5)'\n  },\n  divider: 'rgba(255, 255, 255, 0.12)',\n  background: {\n    paper: grey[800],\n    default: '#303030'\n  },\n  action: {\n    active: common.white,\n    hover: 'rgba(255, 255, 255, 0.08)',\n    hoverOpacity: 0.08,\n    selected: 'rgba(255, 255, 255, 0.16)',\n    selectedOpacity: 0.16,\n    disabled: 'rgba(255, 255, 255, 0.3)',\n    disabledBackground: 'rgba(255, 255, 255, 0.12)',\n    disabledOpacity: 0.38,\n    focus: 'rgba(255, 255, 255, 0.12)',\n    focusOpacity: 0.12,\n    activatedOpacity: 0.24\n  }\n};\n\nfunction addLightOrDark(intent, direction, shade, tonalOffset) {\n  var tonalOffsetLight = tonalOffset.light || tonalOffset;\n  var tonalOffsetDark = tonalOffset.dark || tonalOffset * 1.5;\n\n  if (!intent[direction]) {\n    if (intent.hasOwnProperty(shade)) {\n      intent[direction] = intent[shade];\n    } else if (direction === 'light') {\n      intent.light = lighten(intent.main, tonalOffsetLight);\n    } else if (direction === 'dark') {\n      intent.dark = darken(intent.main, tonalOffsetDark);\n    }\n  }\n}\n\nexport default function createPalette(palette) {\n  var _palette$primary = palette.primary,\n      primary = _palette$primary === void 0 ? {\n    light: indigo[300],\n    main: indigo[500],\n    dark: indigo[700]\n  } : _palette$primary,\n      _palette$secondary = palette.secondary,\n      secondary = _palette$secondary === void 0 ? {\n    light: pink.A200,\n    main: pink.A400,\n    dark: pink.A700\n  } : _palette$secondary,\n      _palette$error = palette.error,\n      error = _palette$error === void 0 ? {\n    light: red[300],\n    main: red[500],\n    dark: red[700]\n  } : _palette$error,\n      _palette$warning = palette.warning,\n      warning = _palette$warning === void 0 ? {\n    light: orange[300],\n    main: orange[500],\n    dark: orange[700]\n  } : _palette$warning,\n      _palette$info = palette.info,\n      info = _palette$info === void 0 ? {\n    light: blue[300],\n    main: blue[500],\n    dark: blue[700]\n  } : _palette$info,\n      _palette$success = palette.success,\n      success = _palette$success === void 0 ? {\n    light: green[300],\n    main: green[500],\n    dark: green[700]\n  } : _palette$success,\n      _palette$type = palette.type,\n      type = _palette$type === void 0 ? 'light' : _palette$type,\n      _palette$contrastThre = palette.contrastThreshold,\n      contrastThreshold = _palette$contrastThre === void 0 ? 3 : _palette$contrastThre,\n      _palette$tonalOffset = palette.tonalOffset,\n      tonalOffset = _palette$tonalOffset === void 0 ? 0.2 : _palette$tonalOffset,\n      other = _objectWithoutProperties(palette, [\"primary\", \"secondary\", \"error\", \"warning\", \"info\", \"success\", \"type\", \"contrastThreshold\", \"tonalOffset\"]); // Use the same logic as\n  // Bootstrap: https://github.com/twbs/bootstrap/blob/1d6e3710dd447de1a200f29e8fa521f8a0908f70/scss/_functions.scss#L59\n  // and material-components-web https://github.com/material-components/material-components-web/blob/ac46b8863c4dab9fc22c4c662dc6bd1b65dd652f/packages/mdc-theme/_functions.scss#L54\n\n\n  function getContrastText(background) {\n    var contrastText = getContrastRatio(background, dark.text.primary) >= contrastThreshold ? dark.text.primary : light.text.primary;\n\n    if (process.env.NODE_ENV !== 'production') {\n      var contrast = getContrastRatio(background, contrastText);\n\n      if (contrast < 3) {\n        console.error([\"Material-UI: The contrast ratio of \".concat(contrast, \":1 for \").concat(contrastText, \" on \").concat(background), 'falls below the WCAG recommended absolute minimum contrast ratio of 3:1.', 'https://www.w3.org/TR/2008/REC-WCAG20-20081211/#visual-audio-contrast-contrast'].join('\\n'));\n      }\n    }\n\n    return contrastText;\n  }\n\n  var augmentColor = function augmentColor(color) {\n    var mainShade = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 500;\n    var lightShade = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 300;\n    var darkShade = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 700;\n    color = _extends({}, color);\n\n    if (!color.main && color[mainShade]) {\n      color.main = color[mainShade];\n    }\n\n    if (!color.main) {\n      throw new Error(process.env.NODE_ENV !== \"production\" ? \"Material-UI: The color provided to augmentColor(color) is invalid.\\nThe color object needs to have a `main` property or a `\".concat(mainShade, \"` property.\") : _formatMuiErrorMessage(4, mainShade));\n    }\n\n    if (typeof color.main !== 'string') {\n      throw new Error(process.env.NODE_ENV !== \"production\" ? \"Material-UI: The color provided to augmentColor(color) is invalid.\\n`color.main` should be a string, but `\".concat(JSON.stringify(color.main), \"` was provided instead.\\n\\nDid you intend to use one of the following approaches?\\n\\nimport {\\xA0green } from \\\"@material-ui/core/colors\\\";\\n\\nconst theme1 = createTheme({ palette: {\\n  primary: green,\\n} });\\n\\nconst theme2 = createTheme({ palette: {\\n  primary: { main: green[500] },\\n} });\") : _formatMuiErrorMessage(5, JSON.stringify(color.main)));\n    }\n\n    addLightOrDark(color, 'light', lightShade, tonalOffset);\n    addLightOrDark(color, 'dark', darkShade, tonalOffset);\n\n    if (!color.contrastText) {\n      color.contrastText = getContrastText(color.main);\n    }\n\n    return color;\n  };\n\n  var types = {\n    dark: dark,\n    light: light\n  };\n\n  if (process.env.NODE_ENV !== 'production') {\n    if (!types[type]) {\n      console.error(\"Material-UI: The palette type `\".concat(type, \"` is not supported.\"));\n    }\n  }\n\n  var paletteOutput = deepmerge(_extends({\n    // A collection of common colors.\n    common: common,\n    // The palette type, can be light or dark.\n    type: type,\n    // The colors used to represent primary interface elements for a user.\n    primary: augmentColor(primary),\n    // The colors used to represent secondary interface elements for a user.\n    secondary: augmentColor(secondary, 'A400', 'A200', 'A700'),\n    // The colors used to represent interface elements that the user should be made aware of.\n    error: augmentColor(error),\n    // The colors used to represent potentially dangerous actions or important messages.\n    warning: augmentColor(warning),\n    // The colors used to present information to the user that is neutral and not necessarily important.\n    info: augmentColor(info),\n    // The colors used to indicate the successful completion of an action that user triggered.\n    success: augmentColor(success),\n    // The grey colors.\n    grey: grey,\n    // Used by `getContrastText()` to maximize the contrast between\n    // the background and the text.\n    contrastThreshold: contrastThreshold,\n    // Takes a background color and returns the text color that maximizes the contrast.\n    getContrastText: getContrastText,\n    // Generate a rich color object.\n    augmentColor: augmentColor,\n    // Used by the functions below to shift a color's luminance by approximately\n    // two indexes within its tonal palette.\n    // E.g., shift from Red 500 to Red 300 or Red 700.\n    tonalOffset: tonalOffset\n  }, types[type]), other);\n  return paletteOutput;\n}","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport { deepmerge } from '@material-ui/utils';\n\nfunction round(value) {\n  return Math.round(value * 1e5) / 1e5;\n}\n\nvar warnedOnce = false;\n\nfunction roundWithDeprecationWarning(value) {\n  if (process.env.NODE_ENV !== 'production') {\n    if (!warnedOnce) {\n      console.warn(['Material-UI: The `theme.typography.round` helper is deprecated.', 'Head to https://material-ui.com/r/migration-v4/#theme for a migration path.'].join('\\n'));\n      warnedOnce = true;\n    }\n  }\n\n  return round(value);\n}\n\nvar caseAllCaps = {\n  textTransform: 'uppercase'\n};\nvar defaultFontFamily = '\"Roboto\", \"Helvetica\", \"Arial\", sans-serif';\n/**\n * @see @link{https://material.io/design/typography/the-type-system.html}\n * @see @link{https://material.io/design/typography/understanding-typography.html}\n */\n\nexport default function createTypography(palette, typography) {\n  var _ref = typeof typography === 'function' ? typography(palette) : typography,\n      _ref$fontFamily = _ref.fontFamily,\n      fontFamily = _ref$fontFamily === void 0 ? defaultFontFamily : _ref$fontFamily,\n      _ref$fontSize = _ref.fontSize,\n      fontSize = _ref$fontSize === void 0 ? 14 : _ref$fontSize,\n      _ref$fontWeightLight = _ref.fontWeightLight,\n      fontWeightLight = _ref$fontWeightLight === void 0 ? 300 : _ref$fontWeightLight,\n      _ref$fontWeightRegula = _ref.fontWeightRegular,\n      fontWeightRegular = _ref$fontWeightRegula === void 0 ? 400 : _ref$fontWeightRegula,\n      _ref$fontWeightMedium = _ref.fontWeightMedium,\n      fontWeightMedium = _ref$fontWeightMedium === void 0 ? 500 : _ref$fontWeightMedium,\n      _ref$fontWeightBold = _ref.fontWeightBold,\n      fontWeightBold = _ref$fontWeightBold === void 0 ? 700 : _ref$fontWeightBold,\n      _ref$htmlFontSize = _ref.htmlFontSize,\n      htmlFontSize = _ref$htmlFontSize === void 0 ? 16 : _ref$htmlFontSize,\n      allVariants = _ref.allVariants,\n      pxToRem2 = _ref.pxToRem,\n      other = _objectWithoutProperties(_ref, [\"fontFamily\", \"fontSize\", \"fontWeightLight\", \"fontWeightRegular\", \"fontWeightMedium\", \"fontWeightBold\", \"htmlFontSize\", \"allVariants\", \"pxToRem\"]);\n\n  if (process.env.NODE_ENV !== 'production') {\n    if (typeof fontSize !== 'number') {\n      console.error('Material-UI: `fontSize` is required to be a number.');\n    }\n\n    if (typeof htmlFontSize !== 'number') {\n      console.error('Material-UI: `htmlFontSize` is required to be a number.');\n    }\n  }\n\n  var coef = fontSize / 14;\n\n  var pxToRem = pxToRem2 || function (size) {\n    return \"\".concat(size / htmlFontSize * coef, \"rem\");\n  };\n\n  var buildVariant = function buildVariant(fontWeight, size, lineHeight, letterSpacing, casing) {\n    return _extends({\n      fontFamily: fontFamily,\n      fontWeight: fontWeight,\n      fontSize: pxToRem(size),\n      // Unitless following https://meyerweb.com/eric/thoughts/2006/02/08/unitless-line-heights/\n      lineHeight: lineHeight\n    }, fontFamily === defaultFontFamily ? {\n      letterSpacing: \"\".concat(round(letterSpacing / size), \"em\")\n    } : {}, casing, allVariants);\n  };\n\n  var variants = {\n    h1: buildVariant(fontWeightLight, 96, 1.167, -1.5),\n    h2: buildVariant(fontWeightLight, 60, 1.2, -0.5),\n    h3: buildVariant(fontWeightRegular, 48, 1.167, 0),\n    h4: buildVariant(fontWeightRegular, 34, 1.235, 0.25),\n    h5: buildVariant(fontWeightRegular, 24, 1.334, 0),\n    h6: buildVariant(fontWeightMedium, 20, 1.6, 0.15),\n    subtitle1: buildVariant(fontWeightRegular, 16, 1.75, 0.15),\n    subtitle2: buildVariant(fontWeightMedium, 14, 1.57, 0.1),\n    body1: buildVariant(fontWeightRegular, 16, 1.5, 0.15),\n    body2: buildVariant(fontWeightRegular, 14, 1.43, 0.15),\n    button: buildVariant(fontWeightMedium, 14, 1.75, 0.4, caseAllCaps),\n    caption: buildVariant(fontWeightRegular, 12, 1.66, 0.4),\n    overline: buildVariant(fontWeightRegular, 12, 2.66, 1, caseAllCaps)\n  };\n  return deepmerge(_extends({\n    htmlFontSize: htmlFontSize,\n    pxToRem: pxToRem,\n    round: roundWithDeprecationWarning,\n    // TODO v5: remove\n    fontFamily: fontFamily,\n    fontSize: fontSize,\n    fontWeightLight: fontWeightLight,\n    fontWeightRegular: fontWeightRegular,\n    fontWeightMedium: fontWeightMedium,\n    fontWeightBold: fontWeightBold\n  }, variants), other, {\n    clone: false // No need to clone deep\n\n  });\n}","var shadowKeyUmbraOpacity = 0.2;\nvar shadowKeyPenumbraOpacity = 0.14;\nvar shadowAmbientShadowOpacity = 0.12;\n\nfunction createShadow() {\n  return [\"\".concat(arguments.length <= 0 ? undefined : arguments[0], \"px \").concat(arguments.length <= 1 ? undefined : arguments[1], \"px \").concat(arguments.length <= 2 ? undefined : arguments[2], \"px \").concat(arguments.length <= 3 ? undefined : arguments[3], \"px rgba(0,0,0,\").concat(shadowKeyUmbraOpacity, \")\"), \"\".concat(arguments.length <= 4 ? undefined : arguments[4], \"px \").concat(arguments.length <= 5 ? undefined : arguments[5], \"px \").concat(arguments.length <= 6 ? undefined : arguments[6], \"px \").concat(arguments.length <= 7 ? undefined : arguments[7], \"px rgba(0,0,0,\").concat(shadowKeyPenumbraOpacity, \")\"), \"\".concat(arguments.length <= 8 ? undefined : arguments[8], \"px \").concat(arguments.length <= 9 ? undefined : arguments[9], \"px \").concat(arguments.length <= 10 ? undefined : arguments[10], \"px \").concat(arguments.length <= 11 ? undefined : arguments[11], \"px rgba(0,0,0,\").concat(shadowAmbientShadowOpacity, \")\")].join(',');\n} // Values from https://github.com/material-components/material-components-web/blob/be8747f94574669cb5e7add1a7c54fa41a89cec7/packages/mdc-elevation/_variables.scss\n\n\nvar shadows = ['none', createShadow(0, 2, 1, -1, 0, 1, 1, 0, 0, 1, 3, 0), createShadow(0, 3, 1, -2, 0, 2, 2, 0, 0, 1, 5, 0), createShadow(0, 3, 3, -2, 0, 3, 4, 0, 0, 1, 8, 0), createShadow(0, 2, 4, -1, 0, 4, 5, 0, 0, 1, 10, 0), createShadow(0, 3, 5, -1, 0, 5, 8, 0, 0, 1, 14, 0), createShadow(0, 3, 5, -1, 0, 6, 10, 0, 0, 1, 18, 0), createShadow(0, 4, 5, -2, 0, 7, 10, 1, 0, 2, 16, 1), createShadow(0, 5, 5, -3, 0, 8, 10, 1, 0, 3, 14, 2), createShadow(0, 5, 6, -3, 0, 9, 12, 1, 0, 3, 16, 2), createShadow(0, 6, 6, -3, 0, 10, 14, 1, 0, 4, 18, 3), createShadow(0, 6, 7, -4, 0, 11, 15, 1, 0, 4, 20, 3), createShadow(0, 7, 8, -4, 0, 12, 17, 2, 0, 5, 22, 4), createShadow(0, 7, 8, -4, 0, 13, 19, 2, 0, 5, 24, 4), createShadow(0, 7, 9, -4, 0, 14, 21, 2, 0, 5, 26, 4), createShadow(0, 8, 9, -5, 0, 15, 22, 2, 0, 6, 28, 5), createShadow(0, 8, 10, -5, 0, 16, 24, 2, 0, 6, 30, 5), createShadow(0, 8, 11, -5, 0, 17, 26, 2, 0, 6, 32, 5), createShadow(0, 9, 11, -5, 0, 18, 28, 2, 0, 7, 34, 6), createShadow(0, 9, 12, -6, 0, 19, 29, 2, 0, 7, 36, 6), createShadow(0, 10, 13, -6, 0, 20, 31, 3, 0, 8, 38, 7), createShadow(0, 10, 13, -6, 0, 21, 33, 3, 0, 8, 40, 7), createShadow(0, 10, 14, -6, 0, 22, 35, 3, 0, 8, 42, 7), createShadow(0, 11, 14, -7, 0, 23, 36, 3, 0, 9, 44, 8), createShadow(0, 11, 15, -7, 0, 24, 38, 3, 0, 9, 46, 8)];\nexport default shadows;","var shape = {\n  borderRadius: 4\n};\nexport default shape;","import { deepmerge } from '@material-ui/utils';\n\nfunction merge(acc, item) {\n  if (!item) {\n    return acc;\n  }\n\n  return deepmerge(acc, item, {\n    clone: false // No need to clone deep, it's way faster.\n\n  });\n}\n\nexport default merge;","import _toConsumableArray from \"@babel/runtime/helpers/esm/toConsumableArray\";\nimport _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _typeof from \"@babel/runtime/helpers/esm/typeof\";\nimport PropTypes from 'prop-types';\nimport merge from './merge'; // The breakpoint **start** at this value.\n// For instance with the first breakpoint xs: [xs, sm[.\n\nvar values = {\n  xs: 0,\n  sm: 600,\n  md: 960,\n  lg: 1280,\n  xl: 1920\n};\nvar defaultBreakpoints = {\n  // Sorted ASC by size. That's important.\n  // It can't be configured as it's used statically for propTypes.\n  keys: ['xs', 'sm', 'md', 'lg', 'xl'],\n  up: function up(key) {\n    return \"@media (min-width:\".concat(values[key], \"px)\");\n  }\n};\nexport function handleBreakpoints(props, propValue, styleFromPropValue) {\n  if (process.env.NODE_ENV !== 'production') {\n    if (!props.theme) {\n      console.error('Material-UI: You are calling a style function without a theme value.');\n    }\n  }\n\n  if (Array.isArray(propValue)) {\n    var themeBreakpoints = props.theme.breakpoints || defaultBreakpoints;\n    return propValue.reduce(function (acc, item, index) {\n      acc[themeBreakpoints.up(themeBreakpoints.keys[index])] = styleFromPropValue(propValue[index]);\n      return acc;\n    }, {});\n  }\n\n  if (_typeof(propValue) === 'object') {\n    var _themeBreakpoints = props.theme.breakpoints || defaultBreakpoints;\n\n    return Object.keys(propValue).reduce(function (acc, breakpoint) {\n      acc[_themeBreakpoints.up(breakpoint)] = styleFromPropValue(propValue[breakpoint]);\n      return acc;\n    }, {});\n  }\n\n  var output = styleFromPropValue(propValue);\n  return output;\n}\n\nfunction breakpoints(styleFunction) {\n  var newStyleFunction = function newStyleFunction(props) {\n    var base = styleFunction(props);\n    var themeBreakpoints = props.theme.breakpoints || defaultBreakpoints;\n    var extended = themeBreakpoints.keys.reduce(function (acc, key) {\n      if (props[key]) {\n        acc = acc || {};\n        acc[themeBreakpoints.up(key)] = styleFunction(_extends({\n          theme: props.theme\n        }, props[key]));\n      }\n\n      return acc;\n    }, null);\n    return merge(base, extended);\n  };\n\n  newStyleFunction.propTypes = process.env.NODE_ENV !== 'production' ? _extends({}, styleFunction.propTypes, {\n    xs: PropTypes.object,\n    sm: PropTypes.object,\n    md: PropTypes.object,\n    lg: PropTypes.object,\n    xl: PropTypes.object\n  }) : {};\n  newStyleFunction.filterProps = ['xs', 'sm', 'md', 'lg', 'xl'].concat(_toConsumableArray(styleFunction.filterProps));\n  return newStyleFunction;\n}\n\nexport default breakpoints;","import _slicedToArray from \"@babel/runtime/helpers/esm/slicedToArray\";\nimport responsivePropType from './responsivePropType';\nimport { handleBreakpoints } from './breakpoints';\nimport merge from './merge';\nimport memoize from './memoize';\nvar properties = {\n  m: 'margin',\n  p: 'padding'\n};\nvar directions = {\n  t: 'Top',\n  r: 'Right',\n  b: 'Bottom',\n  l: 'Left',\n  x: ['Left', 'Right'],\n  y: ['Top', 'Bottom']\n};\nvar aliases = {\n  marginX: 'mx',\n  marginY: 'my',\n  paddingX: 'px',\n  paddingY: 'py'\n}; // memoize() impact:\n// From 300,000 ops/sec\n// To 350,000 ops/sec\n\nvar getCssProperties = memoize(function (prop) {\n  // It's not a shorthand notation.\n  if (prop.length > 2) {\n    if (aliases[prop]) {\n      prop = aliases[prop];\n    } else {\n      return [prop];\n    }\n  }\n\n  var _prop$split = prop.split(''),\n      _prop$split2 = _slicedToArray(_prop$split, 2),\n      a = _prop$split2[0],\n      b = _prop$split2[1];\n\n  var property = properties[a];\n  var direction = directions[b] || '';\n  return Array.isArray(direction) ? direction.map(function (dir) {\n    return property + dir;\n  }) : [property + direction];\n});\nvar spacingKeys = ['m', 'mt', 'mr', 'mb', 'ml', 'mx', 'my', 'p', 'pt', 'pr', 'pb', 'pl', 'px', 'py', 'margin', 'marginTop', 'marginRight', 'marginBottom', 'marginLeft', 'marginX', 'marginY', 'padding', 'paddingTop', 'paddingRight', 'paddingBottom', 'paddingLeft', 'paddingX', 'paddingY'];\nexport function createUnarySpacing(theme) {\n  var themeSpacing = theme.spacing || 8;\n\n  if (typeof themeSpacing === 'number') {\n    return function (abs) {\n      if (process.env.NODE_ENV !== 'production') {\n        if (typeof abs !== 'number') {\n          console.error(\"Material-UI: Expected spacing argument to be a number, got \".concat(abs, \".\"));\n        }\n      }\n\n      return themeSpacing * abs;\n    };\n  }\n\n  if (Array.isArray(themeSpacing)) {\n    return function (abs) {\n      if (process.env.NODE_ENV !== 'production') {\n        if (abs > themeSpacing.length - 1) {\n          console.error([\"Material-UI: The value provided (\".concat(abs, \") overflows.\"), \"The supported values are: \".concat(JSON.stringify(themeSpacing), \".\"), \"\".concat(abs, \" > \").concat(themeSpacing.length - 1, \", you need to add the missing values.\")].join('\\n'));\n        }\n      }\n\n      return themeSpacing[abs];\n    };\n  }\n\n  if (typeof themeSpacing === 'function') {\n    return themeSpacing;\n  }\n\n  if (process.env.NODE_ENV !== 'production') {\n    console.error([\"Material-UI: The `theme.spacing` value (\".concat(themeSpacing, \") is invalid.\"), 'It should be a number, an array or a function.'].join('\\n'));\n  }\n\n  return function () {\n    return undefined;\n  };\n}\n\nfunction getValue(transformer, propValue) {\n  if (typeof propValue === 'string' || propValue == null) {\n    return propValue;\n  }\n\n  var abs = Math.abs(propValue);\n  var transformed = transformer(abs);\n\n  if (propValue >= 0) {\n    return transformed;\n  }\n\n  if (typeof transformed === 'number') {\n    return -transformed;\n  }\n\n  return \"-\".concat(transformed);\n}\n\nfunction getStyleFromPropValue(cssProperties, transformer) {\n  return function (propValue) {\n    return cssProperties.reduce(function (acc, cssProperty) {\n      acc[cssProperty] = getValue(transformer, propValue);\n      return acc;\n    }, {});\n  };\n}\n\nfunction spacing(props) {\n  var theme = props.theme;\n  var transformer = createUnarySpacing(theme);\n  return Object.keys(props).map(function (prop) {\n    // Using a hash computation over an array iteration could be faster, but with only 28 items,\n    // it's doesn't worth the bundle size.\n    if (spacingKeys.indexOf(prop) === -1) {\n      return null;\n    }\n\n    var cssProperties = getCssProperties(prop);\n    var styleFromPropValue = getStyleFromPropValue(cssProperties, transformer);\n    var propValue = props[prop];\n    return handleBreakpoints(props, propValue, styleFromPropValue);\n  }).reduce(merge, {});\n}\n\nspacing.propTypes = process.env.NODE_ENV !== 'production' ? spacingKeys.reduce(function (obj, key) {\n  obj[key] = responsivePropType;\n  return obj;\n}, {}) : {};\nspacing.filterProps = spacingKeys;\nexport default spacing;","export default function memoize(fn) {\n  var cache = {};\n  return function (arg) {\n    if (cache[arg] === undefined) {\n      cache[arg] = fn(arg);\n    }\n\n    return cache[arg];\n  };\n}","import { createUnarySpacing } from '@material-ui/system';\nvar warnOnce;\nexport default function createSpacing() {\n  var spacingInput = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 8;\n\n  // Already transformed.\n  if (spacingInput.mui) {\n    return spacingInput;\n  } // Material Design layouts are visually balanced. Most measurements align to an 8dp grid applied, which aligns both spacing and the overall layout.\n  // Smaller components, such as icons and type, can align to a 4dp grid.\n  // https://material.io/design/layout/understanding-layout.html#usage\n\n\n  var transform = createUnarySpacing({\n    spacing: spacingInput\n  });\n\n  var spacing = function spacing() {\n    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n      args[_key] = arguments[_key];\n    }\n\n    if (process.env.NODE_ENV !== 'production') {\n      if (!(args.length <= 4)) {\n        console.error(\"Material-UI: Too many arguments provided, expected between 0 and 4, got \".concat(args.length));\n      }\n    }\n\n    if (args.length === 0) {\n      return transform(1);\n    }\n\n    if (args.length === 1) {\n      return transform(args[0]);\n    }\n\n    return args.map(function (argument) {\n      if (typeof argument === 'string') {\n        return argument;\n      }\n\n      var output = transform(argument);\n      return typeof output === 'number' ? \"\".concat(output, \"px\") : output;\n    }).join(' ');\n  }; // Backward compatibility, to remove in v5.\n\n\n  Object.defineProperty(spacing, 'unit', {\n    get: function get() {\n      if (process.env.NODE_ENV !== 'production') {\n        if (!warnOnce || process.env.NODE_ENV === 'test') {\n          console.error(['Material-UI: theme.spacing.unit usage has been deprecated.', 'It will be removed in v5.', 'You can replace `theme.spacing.unit * y` with `theme.spacing(y)`.', '', 'You can use the `https://github.com/mui-org/material-ui/tree/master/packages/material-ui-codemod/README.md#theme-spacing-api` migration helper to make the process smoother.'].join('\\n'));\n        }\n\n        warnOnce = true;\n      }\n\n      return spacingInput;\n    }\n  });\n  spacing.mui = true;\n  return spacing;\n}","import _defineProperty from \"@babel/runtime/helpers/esm/defineProperty\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport { deepmerge } from '@material-ui/utils';\nimport createBreakpoints from './createBreakpoints';\nimport createMixins from './createMixins';\nimport createPalette from './createPalette';\nimport createTypography from './createTypography';\nimport shadows from './shadows';\nimport shape from './shape';\nimport createSpacing from './createSpacing';\nimport transitions from './transitions';\nimport zIndex from './zIndex';\n\nfunction createTheme() {\n  var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n  var _options$breakpoints = options.breakpoints,\n      breakpointsInput = _options$breakpoints === void 0 ? {} : _options$breakpoints,\n      _options$mixins = options.mixins,\n      mixinsInput = _options$mixins === void 0 ? {} : _options$mixins,\n      _options$palette = options.palette,\n      paletteInput = _options$palette === void 0 ? {} : _options$palette,\n      spacingInput = options.spacing,\n      _options$typography = options.typography,\n      typographyInput = _options$typography === void 0 ? {} : _options$typography,\n      other = _objectWithoutProperties(options, [\"breakpoints\", \"mixins\", \"palette\", \"spacing\", \"typography\"]);\n\n  var palette = createPalette(paletteInput);\n  var breakpoints = createBreakpoints(breakpointsInput);\n  var spacing = createSpacing(spacingInput);\n  var muiTheme = deepmerge({\n    breakpoints: breakpoints,\n    direction: 'ltr',\n    mixins: createMixins(breakpoints, spacing, mixinsInput),\n    overrides: {},\n    // Inject custom styles\n    palette: palette,\n    props: {},\n    // Provide default props\n    shadows: shadows,\n    typography: createTypography(palette, typographyInput),\n    spacing: spacing,\n    shape: shape,\n    transitions: transitions,\n    zIndex: zIndex\n  }, other);\n\n  for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {\n    args[_key - 1] = arguments[_key];\n  }\n\n  muiTheme = args.reduce(function (acc, argument) {\n    return deepmerge(acc, argument);\n  }, muiTheme);\n\n  if (process.env.NODE_ENV !== 'production') {\n    var pseudoClasses = ['checked', 'disabled', 'error', 'focused', 'focusVisible', 'required', 'expanded', 'selected'];\n\n    var traverse = function traverse(node, parentKey) {\n      var depth = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 1;\n      var key; // eslint-disable-next-line guard-for-in, no-restricted-syntax\n\n      for (key in node) {\n        var child = node[key];\n\n        if (depth === 1) {\n          if (key.indexOf('Mui') === 0 && child) {\n            traverse(child, key, depth + 1);\n          }\n        } else if (pseudoClasses.indexOf(key) !== -1 && Object.keys(child).length > 0) {\n          if (process.env.NODE_ENV !== 'production') {\n            console.error([\"Material-UI: The `\".concat(parentKey, \"` component increases \") + \"the CSS specificity of the `\".concat(key, \"` internal state.\"), 'You can not override it like this: ', JSON.stringify(node, null, 2), '', 'Instead, you need to use the $ruleName syntax:', JSON.stringify({\n              root: _defineProperty({}, \"&$\".concat(key), child)\n            }, null, 2), '', 'https://material-ui.com/r/pseudo-classes-guide'].join('\\n'));\n          } // Remove the style to prevent global conflicts.\n\n\n          node[key] = {};\n        }\n      }\n    };\n\n    traverse(muiTheme.overrides);\n  }\n\n  return muiTheme;\n}\n\nvar warnedOnce = false;\nexport function createMuiTheme() {\n  if (process.env.NODE_ENV !== 'production') {\n    if (!warnedOnce) {\n      warnedOnce = true;\n      console.error(['Material-UI: the createMuiTheme function was renamed to createTheme.', '', \"You should use `import { createTheme } from '@material-ui/core/styles'`\"].join('\\n'));\n    }\n  }\n\n  return createTheme.apply(void 0, arguments);\n}\nexport default createTheme;","import ownerDocument from './ownerDocument';\nexport default function ownerWindow(node) {\n  var doc = ownerDocument(node);\n  return doc.defaultView || window;\n}","// A change of the browser zoom change the scrollbar size.\n// Credit https://github.com/twbs/bootstrap/blob/3ffe3a5d82f6f561b82ff78d82b32a7d14aed558/js/src/modal.js#L512-L519\nexport default function getScrollbarSize() {\n  var scrollDiv = document.createElement('div');\n  scrollDiv.style.width = '99px';\n  scrollDiv.style.height = '99px';\n  scrollDiv.style.position = 'absolute';\n  scrollDiv.style.top = '-9999px';\n  scrollDiv.style.overflow = 'scroll';\n  document.body.appendChild(scrollDiv);\n  var scrollbarSize = scrollDiv.offsetWidth - scrollDiv.clientWidth;\n  document.body.removeChild(scrollDiv);\n  return scrollbarSize;\n}","import _classCallCheck from \"@babel/runtime/helpers/esm/classCallCheck\";\nimport _createClass from \"@babel/runtime/helpers/esm/createClass\";\nimport _toConsumableArray from \"@babel/runtime/helpers/esm/toConsumableArray\";\nimport getScrollbarSize from '../utils/getScrollbarSize';\nimport ownerDocument from '../utils/ownerDocument';\nimport ownerWindow from '../utils/ownerWindow'; // Is a vertical scrollbar displayed?\n\nfunction isOverflowing(container) {\n  var doc = ownerDocument(container);\n\n  if (doc.body === container) {\n    return ownerWindow(doc).innerWidth > doc.documentElement.clientWidth;\n  }\n\n  return container.scrollHeight > container.clientHeight;\n}\n\nexport function ariaHidden(node, show) {\n  if (show) {\n    node.setAttribute('aria-hidden', 'true');\n  } else {\n    node.removeAttribute('aria-hidden');\n  }\n}\n\nfunction getPaddingRight(node) {\n  return parseInt(window.getComputedStyle(node)['padding-right'], 10) || 0;\n}\n\nfunction ariaHiddenSiblings(container, mountNode, currentNode) {\n  var nodesToExclude = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : [];\n  var show = arguments.length > 4 ? arguments[4] : undefined;\n  var blacklist = [mountNode, currentNode].concat(_toConsumableArray(nodesToExclude));\n  var blacklistTagNames = ['TEMPLATE', 'SCRIPT', 'STYLE'];\n  [].forEach.call(container.children, function (node) {\n    if (node.nodeType === 1 && blacklist.indexOf(node) === -1 && blacklistTagNames.indexOf(node.tagName) === -1) {\n      ariaHidden(node, show);\n    }\n  });\n}\n\nfunction findIndexOf(containerInfo, callback) {\n  var idx = -1;\n  containerInfo.some(function (item, index) {\n    if (callback(item)) {\n      idx = index;\n      return true;\n    }\n\n    return false;\n  });\n  return idx;\n}\n\nfunction handleContainer(containerInfo, props) {\n  var restoreStyle = [];\n  var restorePaddings = [];\n  var container = containerInfo.container;\n  var fixedNodes;\n\n  if (!props.disableScrollLock) {\n    if (isOverflowing(container)) {\n      // Compute the size before applying overflow hidden to avoid any scroll jumps.\n      var scrollbarSize = getScrollbarSize();\n      restoreStyle.push({\n        value: container.style.paddingRight,\n        key: 'padding-right',\n        el: container\n      }); // Use computed style, here to get the real padding to add our scrollbar width.\n\n      container.style['padding-right'] = \"\".concat(getPaddingRight(container) + scrollbarSize, \"px\"); // .mui-fixed is a global helper.\n\n      fixedNodes = ownerDocument(container).querySelectorAll('.mui-fixed');\n      [].forEach.call(fixedNodes, function (node) {\n        restorePaddings.push(node.style.paddingRight);\n        node.style.paddingRight = \"\".concat(getPaddingRight(node) + scrollbarSize, \"px\");\n      });\n    } // Improve Gatsby support\n    // https://css-tricks.com/snippets/css/force-vertical-scrollbar/\n\n\n    var parent = container.parentElement;\n    var scrollContainer = parent.nodeName === 'HTML' && window.getComputedStyle(parent)['overflow-y'] === 'scroll' ? parent : container; // Block the scroll even if no scrollbar is visible to account for mobile keyboard\n    // screensize shrink.\n\n    restoreStyle.push({\n      value: scrollContainer.style.overflow,\n      key: 'overflow',\n      el: scrollContainer\n    });\n    scrollContainer.style.overflow = 'hidden';\n  }\n\n  var restore = function restore() {\n    if (fixedNodes) {\n      [].forEach.call(fixedNodes, function (node, i) {\n        if (restorePaddings[i]) {\n          node.style.paddingRight = restorePaddings[i];\n        } else {\n          node.style.removeProperty('padding-right');\n        }\n      });\n    }\n\n    restoreStyle.forEach(function (_ref) {\n      var value = _ref.value,\n          el = _ref.el,\n          key = _ref.key;\n\n      if (value) {\n        el.style.setProperty(key, value);\n      } else {\n        el.style.removeProperty(key);\n      }\n    });\n  };\n\n  return restore;\n}\n\nfunction getHiddenSiblings(container) {\n  var hiddenSiblings = [];\n  [].forEach.call(container.children, function (node) {\n    if (node.getAttribute && node.getAttribute('aria-hidden') === 'true') {\n      hiddenSiblings.push(node);\n    }\n  });\n  return hiddenSiblings;\n}\n/**\n * @ignore - do not document.\n *\n * Proper state management for containers and the modals in those containers.\n * Simplified, but inspired by react-overlay's ModalManager class.\n * Used by the Modal to ensure proper styling of containers.\n */\n\n\nvar ModalManager = /*#__PURE__*/function () {\n  function ModalManager() {\n    _classCallCheck(this, ModalManager);\n\n    // this.modals[modalIndex] = modal\n    this.modals = []; // this.containers[containerIndex] = {\n    //   modals: [],\n    //   container,\n    //   restore: null,\n    // }\n\n    this.containers = [];\n  }\n\n  _createClass(ModalManager, [{\n    key: \"add\",\n    value: function add(modal, container) {\n      var modalIndex = this.modals.indexOf(modal);\n\n      if (modalIndex !== -1) {\n        return modalIndex;\n      }\n\n      modalIndex = this.modals.length;\n      this.modals.push(modal); // If the modal we are adding is already in the DOM.\n\n      if (modal.modalRef) {\n        ariaHidden(modal.modalRef, false);\n      }\n\n      var hiddenSiblingNodes = getHiddenSiblings(container);\n      ariaHiddenSiblings(container, modal.mountNode, modal.modalRef, hiddenSiblingNodes, true);\n      var containerIndex = findIndexOf(this.containers, function (item) {\n        return item.container === container;\n      });\n\n      if (containerIndex !== -1) {\n        this.containers[containerIndex].modals.push(modal);\n        return modalIndex;\n      }\n\n      this.containers.push({\n        modals: [modal],\n        container: container,\n        restore: null,\n        hiddenSiblingNodes: hiddenSiblingNodes\n      });\n      return modalIndex;\n    }\n  }, {\n    key: \"mount\",\n    value: function mount(modal, props) {\n      var containerIndex = findIndexOf(this.containers, function (item) {\n        return item.modals.indexOf(modal) !== -1;\n      });\n      var containerInfo = this.containers[containerIndex];\n\n      if (!containerInfo.restore) {\n        containerInfo.restore = handleContainer(containerInfo, props);\n      }\n    }\n  }, {\n    key: \"remove\",\n    value: function remove(modal) {\n      var modalIndex = this.modals.indexOf(modal);\n\n      if (modalIndex === -1) {\n        return modalIndex;\n      }\n\n      var containerIndex = findIndexOf(this.containers, function (item) {\n        return item.modals.indexOf(modal) !== -1;\n      });\n      var containerInfo = this.containers[containerIndex];\n      containerInfo.modals.splice(containerInfo.modals.indexOf(modal), 1);\n      this.modals.splice(modalIndex, 1); // If that was the last modal in a container, clean up the container.\n\n      if (containerInfo.modals.length === 0) {\n        // The modal might be closed before it had the chance to be mounted in the DOM.\n        if (containerInfo.restore) {\n          containerInfo.restore();\n        }\n\n        if (modal.modalRef) {\n          // In case the modal wasn't in the DOM yet.\n          ariaHidden(modal.modalRef, true);\n        }\n\n        ariaHiddenSiblings(containerInfo.container, modal.mountNode, modal.modalRef, containerInfo.hiddenSiblingNodes, false);\n        this.containers.splice(containerIndex, 1);\n      } else {\n        // Otherwise make sure the next top modal is visible to a screen reader.\n        var nextTop = containerInfo.modals[containerInfo.modals.length - 1]; // as soon as a modal is adding its modalRef is undefined. it can't set\n        // aria-hidden because the dom element doesn't exist either\n        // when modal was unmounted before modalRef gets null\n\n        if (nextTop.modalRef) {\n          ariaHidden(nextTop.modalRef, false);\n        }\n      }\n\n      return modalIndex;\n    }\n  }, {\n    key: \"isTopModal\",\n    value: function isTopModal(modal) {\n      return this.modals.length > 0 && this.modals[this.modals.length - 1] === modal;\n    }\n  }]);\n\n  return ModalManager;\n}();\n\nexport { ModalManager as default };","export default function _classCallCheck(instance, Constructor) {\n  if (!(instance instanceof Constructor)) {\n    throw new TypeError(\"Cannot call a class as a function\");\n  }\n}","/* eslint-disable consistent-return, jsx-a11y/no-noninteractive-tabindex, camelcase */\nimport * as React from 'react';\nimport * as ReactDOM from 'react-dom';\nimport PropTypes from 'prop-types';\nimport ownerDocument from '../utils/ownerDocument';\nimport useForkRef from '../utils/useForkRef';\nimport { exactProp } from '@material-ui/utils';\n/**\n * Utility component that locks focus inside the component.\n */\n\nfunction Unstable_TrapFocus(props) {\n  var children = props.children,\n      _props$disableAutoFoc = props.disableAutoFocus,\n      disableAutoFocus = _props$disableAutoFoc === void 0 ? false : _props$disableAutoFoc,\n      _props$disableEnforce = props.disableEnforceFocus,\n      disableEnforceFocus = _props$disableEnforce === void 0 ? false : _props$disableEnforce,\n      _props$disableRestore = props.disableRestoreFocus,\n      disableRestoreFocus = _props$disableRestore === void 0 ? false : _props$disableRestore,\n      getDoc = props.getDoc,\n      isEnabled = props.isEnabled,\n      open = props.open;\n  var ignoreNextEnforceFocus = React.useRef();\n  var sentinelStart = React.useRef(null);\n  var sentinelEnd = React.useRef(null);\n  var nodeToRestore = React.useRef();\n  var rootRef = React.useRef(null); // can be removed once we drop support for non ref forwarding class components\n\n  var handleOwnRef = React.useCallback(function (instance) {\n    // #StrictMode ready\n    rootRef.current = ReactDOM.findDOMNode(instance);\n  }, []);\n  var handleRef = useForkRef(children.ref, handleOwnRef);\n  var prevOpenRef = React.useRef();\n  React.useEffect(function () {\n    prevOpenRef.current = open;\n  }, [open]);\n\n  if (!prevOpenRef.current && open && typeof window !== 'undefined') {\n    // WARNING: Potentially unsafe in concurrent mode.\n    // The way the read on `nodeToRestore` is setup could make this actually safe.\n    // Say we render `open={false}` -> `open={true}` but never commit.\n    // We have now written a state that wasn't committed. But no committed effect\n    // will read this wrong value. We only read from `nodeToRestore` in effects\n    // that were committed on `open={true}`\n    // WARNING: Prevents the instance from being garbage collected. Should only\n    // hold a weak ref.\n    nodeToRestore.current = getDoc().activeElement;\n  }\n\n  React.useEffect(function () {\n    if (!open) {\n      return;\n    }\n\n    var doc = ownerDocument(rootRef.current); // We might render an empty child.\n\n    if (!disableAutoFocus && rootRef.current && !rootRef.current.contains(doc.activeElement)) {\n      if (!rootRef.current.hasAttribute('tabIndex')) {\n        if (process.env.NODE_ENV !== 'production') {\n          console.error(['Material-UI: The modal content node does not accept focus.', 'For the benefit of assistive technologies, ' + 'the tabIndex of the node is being set to \"-1\".'].join('\\n'));\n        }\n\n        rootRef.current.setAttribute('tabIndex', -1);\n      }\n\n      rootRef.current.focus();\n    }\n\n    var contain = function contain() {\n      var rootElement = rootRef.current; // Cleanup functions are executed lazily in React 17.\n      // Contain can be called between the component being unmounted and its cleanup function being run.\n\n      if (rootElement === null) {\n        return;\n      }\n\n      if (!doc.hasFocus() || disableEnforceFocus || !isEnabled() || ignoreNextEnforceFocus.current) {\n        ignoreNextEnforceFocus.current = false;\n        return;\n      }\n\n      if (rootRef.current && !rootRef.current.contains(doc.activeElement)) {\n        rootRef.current.focus();\n      }\n    };\n\n    var loopFocus = function loopFocus(event) {\n      // 9 = Tab\n      if (disableEnforceFocus || !isEnabled() || event.keyCode !== 9) {\n        return;\n      } // Make sure the next tab starts from the right place.\n\n\n      if (doc.activeElement === rootRef.current) {\n        // We need to ignore the next contain as\n        // it will try to move the focus back to the rootRef element.\n        ignoreNextEnforceFocus.current = true;\n\n        if (event.shiftKey) {\n          sentinelEnd.current.focus();\n        } else {\n          sentinelStart.current.focus();\n        }\n      }\n    };\n\n    doc.addEventListener('focus', contain, true);\n    doc.addEventListener('keydown', loopFocus, true); // With Edge, Safari and Firefox, no focus related events are fired when the focused area stops being a focused area\n    // e.g. https://bugzilla.mozilla.org/show_bug.cgi?id=559561.\n    //\n    // The whatwg spec defines how the browser should behave but does not explicitly mention any events:\n    // https://html.spec.whatwg.org/multipage/interaction.html#focus-fixup-rule.\n\n    var interval = setInterval(function () {\n      contain();\n    }, 50);\n    return function () {\n      clearInterval(interval);\n      doc.removeEventListener('focus', contain, true);\n      doc.removeEventListener('keydown', loopFocus, true); // restoreLastFocus()\n\n      if (!disableRestoreFocus) {\n        // In IE 11 it is possible for document.activeElement to be null resulting\n        // in nodeToRestore.current being null.\n        // Not all elements in IE 11 have a focus method.\n        // Once IE 11 support is dropped the focus() call can be unconditional.\n        if (nodeToRestore.current && nodeToRestore.current.focus) {\n          nodeToRestore.current.focus();\n        }\n\n        nodeToRestore.current = null;\n      }\n    };\n  }, [disableAutoFocus, disableEnforceFocus, disableRestoreFocus, isEnabled, open]);\n  return /*#__PURE__*/React.createElement(React.Fragment, null, /*#__PURE__*/React.createElement(\"div\", {\n    tabIndex: 0,\n    ref: sentinelStart,\n    \"data-test\": \"sentinelStart\"\n  }), /*#__PURE__*/React.cloneElement(children, {\n    ref: handleRef\n  }), /*#__PURE__*/React.createElement(\"div\", {\n    tabIndex: 0,\n    ref: sentinelEnd,\n    \"data-test\": \"sentinelEnd\"\n  }));\n}\n\nprocess.env.NODE_ENV !== \"production\" ? Unstable_TrapFocus.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * A single child content element.\n   */\n  children: PropTypes.node,\n\n  /**\n   * If `true`, the trap focus will not automatically shift focus to itself when it opens, and\n   * replace it to the last focused element when it closes.\n   * This also works correctly with any trap focus children that have the `disableAutoFocus` prop.\n   *\n   * Generally this should never be set to `true` as it makes the trap focus less\n   * accessible to assistive technologies, like screen readers.\n   */\n  disableAutoFocus: PropTypes.bool,\n\n  /**\n   * If `true`, the trap focus will not prevent focus from leaving the trap focus while open.\n   *\n   * Generally this should never be set to `true` as it makes the trap focus less\n   * accessible to assistive technologies, like screen readers.\n   */\n  disableEnforceFocus: PropTypes.bool,\n\n  /**\n   * If `true`, the trap focus will not restore focus to previously focused element once\n   * trap focus is hidden.\n   */\n  disableRestoreFocus: PropTypes.bool,\n\n  /**\n   * Return the document to consider.\n   * We use it to implement the restore focus between different browser documents.\n   */\n  getDoc: PropTypes.func.isRequired,\n\n  /**\n   * Do we still want to enforce the focus?\n   * This prop helps nesting TrapFocus elements.\n   */\n  isEnabled: PropTypes.func.isRequired,\n\n  /**\n   * If `true`, focus will be locked.\n   */\n  open: PropTypes.bool.isRequired\n} : void 0;\n\nif (process.env.NODE_ENV !== 'production') {\n  // eslint-disable-next-line\n  Unstable_TrapFocus['propTypes' + ''] = exactProp(Unstable_TrapFocus.propTypes);\n}\n\nexport default Unstable_TrapFocus;","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nexport var styles = {\n  /* Styles applied to the root element. */\n  root: {\n    zIndex: -1,\n    position: 'fixed',\n    right: 0,\n    bottom: 0,\n    top: 0,\n    left: 0,\n    backgroundColor: 'rgba(0, 0, 0, 0.5)',\n    WebkitTapHighlightColor: 'transparent'\n  },\n\n  /* Styles applied to the root element if `invisible={true}`. */\n  invisible: {\n    backgroundColor: 'transparent'\n  }\n};\n/**\n * @ignore - internal component.\n */\n\nvar SimpleBackdrop = /*#__PURE__*/React.forwardRef(function SimpleBackdrop(props, ref) {\n  var _props$invisible = props.invisible,\n      invisible = _props$invisible === void 0 ? false : _props$invisible,\n      open = props.open,\n      other = _objectWithoutProperties(props, [\"invisible\", \"open\"]);\n\n  return open ? /*#__PURE__*/React.createElement(\"div\", _extends({\n    \"aria-hidden\": true,\n    ref: ref\n  }, other, {\n    style: _extends({}, styles.root, invisible ? styles.invisible : {}, other.style)\n  })) : null;\n});\nprocess.env.NODE_ENV !== \"production\" ? SimpleBackdrop.propTypes = {\n  /**\n   * If `true`, the backdrop is invisible.\n   * It can be used when rendering a popover or a custom select component.\n   */\n  invisible: PropTypes.bool,\n\n  /**\n   * If `true`, the backdrop is open.\n   */\n  open: PropTypes.bool.isRequired\n} : void 0;\nexport default SimpleBackdrop;","import _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport _extends from \"@babel/runtime/helpers/esm/extends\";\nimport * as React from 'react';\nimport * as ReactDOM from 'react-dom';\nimport PropTypes from 'prop-types';\nimport { getThemeProps, useTheme } from '@material-ui/styles';\nimport { elementAcceptingRef, HTMLElementType } from '@material-ui/utils';\nimport deprecatedPropType from '../utils/deprecatedPropType';\nimport ownerDocument from '../utils/ownerDocument';\nimport Portal from '../Portal';\nimport createChainedFunction from '../utils/createChainedFunction';\nimport useForkRef from '../utils/useForkRef';\nimport useEventCallback from '../utils/useEventCallback';\nimport zIndex from '../styles/zIndex';\nimport ModalManager, { ariaHidden } from './ModalManager';\nimport TrapFocus from '../Unstable_TrapFocus';\nimport SimpleBackdrop from './SimpleBackdrop';\n\nfunction getContainer(container) {\n  container = typeof container === 'function' ? container() : container;\n  return ReactDOM.findDOMNode(container);\n}\n\nfunction getHasTransition(props) {\n  return props.children ? props.children.props.hasOwnProperty('in') : false;\n} // A modal manager used to track and manage the state of open Modals.\n// Modals don't open on the server so this won't conflict with concurrent requests.\n\n\nvar defaultManager = new ModalManager();\nexport var styles = function styles(theme) {\n  return {\n    /* Styles applied to the root element. */\n    root: {\n      position: 'fixed',\n      zIndex: theme.zIndex.modal,\n      right: 0,\n      bottom: 0,\n      top: 0,\n      left: 0\n    },\n\n    /* Styles applied to the root element if the `Modal` has exited. */\n    hidden: {\n      visibility: 'hidden'\n    }\n  };\n};\n/**\n * Modal is a lower-level construct that is leveraged by the following components:\n *\n * - [Dialog](/api/dialog/)\n * - [Drawer](/api/drawer/)\n * - [Menu](/api/menu/)\n * - [Popover](/api/popover/)\n *\n * If you are creating a modal dialog, you probably want to use the [Dialog](/api/dialog/) component\n * rather than directly using Modal.\n *\n * This component shares many concepts with [react-overlays](https://react-bootstrap.github.io/react-overlays/#modals).\n */\n\nvar Modal = /*#__PURE__*/React.forwardRef(function Modal(inProps, ref) {\n  var theme = useTheme();\n  var props = getThemeProps({\n    name: 'MuiModal',\n    props: _extends({}, inProps),\n    theme: theme\n  });\n\n  var _props$BackdropCompon = props.BackdropComponent,\n      BackdropComponent = _props$BackdropCompon === void 0 ? SimpleBackdrop : _props$BackdropCompon,\n      BackdropProps = props.BackdropProps,\n      children = props.children,\n      _props$closeAfterTran = props.closeAfterTransition,\n      closeAfterTransition = _props$closeAfterTran === void 0 ? false : _props$closeAfterTran,\n      container = props.container,\n      _props$disableAutoFoc = props.disableAutoFocus,\n      disableAutoFocus = _props$disableAutoFoc === void 0 ? false : _props$disableAutoFoc,\n      _props$disableBackdro = props.disableBackdropClick,\n      disableBackdropClick = _props$disableBackdro === void 0 ? false : _props$disableBackdro,\n      _props$disableEnforce = props.disableEnforceFocus,\n      disableEnforceFocus = _props$disableEnforce === void 0 ? false : _props$disableEnforce,\n      _props$disableEscapeK = props.disableEscapeKeyDown,\n      disableEscapeKeyDown = _props$disableEscapeK === void 0 ? false : _props$disableEscapeK,\n      _props$disablePortal = props.disablePortal,\n      disablePortal = _props$disablePortal === void 0 ? false : _props$disablePortal,\n      _props$disableRestore = props.disableRestoreFocus,\n      disableRestoreFocus = _props$disableRestore === void 0 ? false : _props$disableRestore,\n      _props$disableScrollL = props.disableScrollLock,\n      disableScrollLock = _props$disableScrollL === void 0 ? false : _props$disableScrollL,\n      _props$hideBackdrop = props.hideBackdrop,\n      hideBackdrop = _props$hideBackdrop === void 0 ? false : _props$hideBackdrop,\n      _props$keepMounted = props.keepMounted,\n      keepMounted = _props$keepMounted === void 0 ? false : _props$keepMounted,\n      _props$manager = props.manager,\n      manager = _props$manager === void 0 ? defaultManager : _props$manager,\n      onBackdropClick = props.onBackdropClick,\n      onClose = props.onClose,\n      onEscapeKeyDown = props.onEscapeKeyDown,\n      onRendered = props.onRendered,\n      open = props.open,\n      other = _objectWithoutProperties(props, [\"BackdropComponent\", \"BackdropProps\", \"children\", \"closeAfterTransition\", \"container\", \"disableAutoFocus\", \"disableBackdropClick\", \"disableEnforceFocus\", \"disableEscapeKeyDown\", \"disablePortal\", \"disableRestoreFocus\", \"disableScrollLock\", \"hideBackdrop\", \"keepMounted\", \"manager\", \"onBackdropClick\", \"onClose\", \"onEscapeKeyDown\", \"onRendered\", \"open\"]);\n\n  var _React$useState = React.useState(true),\n      exited = _React$useState[0],\n      setExited = _React$useState[1];\n\n  var modal = React.useRef({});\n  var mountNodeRef = React.useRef(null);\n  var modalRef = React.useRef(null);\n  var handleRef = useForkRef(modalRef, ref);\n  var hasTransition = getHasTransition(props);\n\n  var getDoc = function getDoc() {\n    return ownerDocument(mountNodeRef.current);\n  };\n\n  var getModal = function getModal() {\n    modal.current.modalRef = modalRef.current;\n    modal.current.mountNode = mountNodeRef.current;\n    return modal.current;\n  };\n\n  var handleMounted = function handleMounted() {\n    manager.mount(getModal(), {\n      disableScrollLock: disableScrollLock\n    }); // Fix a bug on Chrome where the scroll isn't initially 0.\n\n    modalRef.current.scrollTop = 0;\n  };\n\n  var handleOpen = useEventCallback(function () {\n    var resolvedContainer = getContainer(container) || getDoc().body;\n    manager.add(getModal(), resolvedContainer); // The element was already mounted.\n\n    if (modalRef.current) {\n      handleMounted();\n    }\n  });\n  var isTopModal = React.useCallback(function () {\n    return manager.isTopModal(getModal());\n  }, [manager]);\n  var handlePortalRef = useEventCallback(function (node) {\n    mountNodeRef.current = node;\n\n    if (!node) {\n      return;\n    }\n\n    if (onRendered) {\n      onRendered();\n    }\n\n    if (open && isTopModal()) {\n      handleMounted();\n    } else {\n      ariaHidden(modalRef.current, true);\n    }\n  });\n  var handleClose = React.useCallback(function () {\n    manager.remove(getModal());\n  }, [manager]);\n  React.useEffect(function () {\n    return function () {\n      handleClose();\n    };\n  }, [handleClose]);\n  React.useEffect(function () {\n    if (open) {\n      handleOpen();\n    } else if (!hasTransition || !closeAfterTransition) {\n      handleClose();\n    }\n  }, [open, handleClose, hasTransition, closeAfterTransition, handleOpen]);\n\n  if (!keepMounted && !open && (!hasTransition || exited)) {\n    return null;\n  }\n\n  var handleEnter = function handleEnter() {\n    setExited(false);\n  };\n\n  var handleExited = function handleExited() {\n    setExited(true);\n\n    if (closeAfterTransition) {\n      handleClose();\n    }\n  };\n\n  var handleBackdropClick = function handleBackdropClick(event) {\n    if (event.target !== event.currentTarget) {\n      return;\n    }\n\n    if (onBackdropClick) {\n      onBackdropClick(event);\n    }\n\n    if (!disableBackdropClick && onClose) {\n      onClose(event, 'backdropClick');\n    }\n  };\n\n  var handleKeyDown = function handleKeyDown(event) {\n    // The handler doesn't take event.defaultPrevented into account:\n    //\n    // event.preventDefault() is meant to stop default behaviours like\n    // clicking a checkbox to check it, hitting a button to submit a form,\n    // and hitting left arrow to move the cursor in a text input etc.\n    // Only special HTML elements have these default behaviors.\n    if (event.key !== 'Escape' || !isTopModal()) {\n      return;\n    }\n\n    if (onEscapeKeyDown) {\n      onEscapeKeyDown(event);\n    }\n\n    if (!disableEscapeKeyDown) {\n      // Swallow the event, in case someone is listening for the escape key on the body.\n      event.stopPropagation();\n\n      if (onClose) {\n        onClose(event, 'escapeKeyDown');\n      }\n    }\n  };\n\n  var inlineStyle = styles(theme || {\n    zIndex: zIndex\n  });\n  var childProps = {};\n\n  if (children.props.tabIndex === undefined) {\n    childProps.tabIndex = children.props.tabIndex || '-1';\n  } // It's a Transition like component\n\n\n  if (hasTransition) {\n    childProps.onEnter = createChainedFunction(handleEnter, children.props.onEnter);\n    childProps.onExited = createChainedFunction(handleExited, children.props.onExited);\n  }\n\n  return /*#__PURE__*/React.createElement(Portal, {\n    ref: handlePortalRef,\n    container: container,\n    disablePortal: disablePortal\n  }, /*#__PURE__*/React.createElement(\"div\", _extends({\n    ref: handleRef,\n    onKeyDown: handleKeyDown,\n    role: \"presentation\"\n  }, other, {\n    style: _extends({}, inlineStyle.root, !open && exited ? inlineStyle.hidden : {}, other.style)\n  }), hideBackdrop ? null : /*#__PURE__*/React.createElement(BackdropComponent, _extends({\n    open: open,\n    onClick: handleBackdropClick\n  }, BackdropProps)), /*#__PURE__*/React.createElement(TrapFocus, {\n    disableEnforceFocus: disableEnforceFocus,\n    disableAutoFocus: disableAutoFocus,\n    disableRestoreFocus: disableRestoreFocus,\n    getDoc: getDoc,\n    isEnabled: isTopModal,\n    open: open\n  }, /*#__PURE__*/React.cloneElement(children, childProps))));\n});\nprocess.env.NODE_ENV !== \"production\" ? Modal.propTypes = {\n  /**\n   * A backdrop component. This prop enables custom backdrop rendering.\n   */\n  BackdropComponent: PropTypes.elementType,\n\n  /**\n   * Props applied to the [`Backdrop`](/api/backdrop/) element.\n   */\n  BackdropProps: PropTypes.object,\n\n  /**\n   * A single child content element.\n   */\n  children: elementAcceptingRef.isRequired,\n\n  /**\n   * When set to true the Modal waits until a nested Transition is completed before closing.\n   */\n  closeAfterTransition: PropTypes.bool,\n\n  /**\n   * A HTML element, component instance, or function that returns either.\n   * The `container` will have the portal children appended to it.\n   *\n   * By default, it uses the body of the top-level document object,\n   * so it's simply `document.body` most of the time.\n   */\n  container: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .oneOfType([HTMLElementType, PropTypes.instanceOf(React.Component), PropTypes.func]),\n\n  /**\n   * If `true`, the modal will not automatically shift focus to itself when it opens, and\n   * replace it to the last focused element when it closes.\n   * This also works correctly with any modal children that have the `disableAutoFocus` prop.\n   *\n   * Generally this should never be set to `true` as it makes the modal less\n   * accessible to assistive technologies, like screen readers.\n   */\n  disableAutoFocus: PropTypes.bool,\n\n  /**\n   * If `true`, clicking the backdrop will not fire `onClose`.\n   */\n  disableBackdropClick: deprecatedPropType(PropTypes.bool, 'Use the onClose prop with the `reason` argument to filter the `backdropClick` events.'),\n\n  /**\n   * If `true`, the modal will not prevent focus from leaving the modal while open.\n   *\n   * Generally this should never be set to `true` as it makes the modal less\n   * accessible to assistive technologies, like screen readers.\n   */\n  disableEnforceFocus: PropTypes.bool,\n\n  /**\n   * If `true`, hitting escape will not fire `onClose`.\n   */\n  disableEscapeKeyDown: PropTypes.bool,\n\n  /**\n   * Disable the portal behavior.\n   * The children stay within it's parent DOM hierarchy.\n   */\n  disablePortal: PropTypes.bool,\n\n  /**\n   * If `true`, the modal will not restore focus to previously focused element once\n   * modal is hidden.\n   */\n  disableRestoreFocus: PropTypes.bool,\n\n  /**\n   * Disable the scroll lock behavior.\n   */\n  disableScrollLock: PropTypes.bool,\n\n  /**\n   * If `true`, the backdrop is not rendered.\n   */\n  hideBackdrop: PropTypes.bool,\n\n  /**\n   * Always keep the children in the DOM.\n   * This prop can be useful in SEO situation or\n   * when you want to maximize the responsiveness of the Modal.\n   */\n  keepMounted: PropTypes.bool,\n\n  /**\n   * @ignore\n   */\n  manager: PropTypes.object,\n\n  /**\n   * Callback fired when the backdrop is clicked.\n   */\n  onBackdropClick: deprecatedPropType(PropTypes.func, 'Use the onClose prop with the `reason` argument to handle the `backdropClick` events.'),\n\n  /**\n   * Callback fired when the component requests to be closed.\n   * The `reason` parameter can optionally be used to control the response to `onClose`.\n   *\n   * @param {object} event The event source of the callback.\n   * @param {string} reason Can be: `\"escapeKeyDown\"`, `\"backdropClick\"`.\n   */\n  onClose: PropTypes.func,\n\n  /**\n   * Callback fired when the escape key is pressed,\n   * `disableEscapeKeyDown` is false and the modal is in focus.\n   */\n  onEscapeKeyDown: deprecatedPropType(PropTypes.func, 'Use the onClose prop with the `reason` argument to handle the `escapeKeyDown` events.'),\n\n  /**\n   * Callback fired once the children has been mounted into the `container`.\n   * It signals that the `open={true}` prop took effect.\n   *\n   * This prop will be removed in v5, the ref can be used instead.\n   */\n  onRendered: deprecatedPropType(PropTypes.func, 'Use the ref instead.'),\n\n  /**\n   * If `true`, the modal is open.\n   */\n  open: PropTypes.bool.isRequired\n} : void 0;\nexport default Modal;","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport * as ReactDOM from 'react-dom';\nimport { chainPropTypes, elementTypeAcceptingRef, refType, HTMLElementType } from '@material-ui/utils';\nimport debounce from '../utils/debounce';\nimport clsx from 'clsx';\nimport ownerDocument from '../utils/ownerDocument';\nimport ownerWindow from '../utils/ownerWindow';\nimport createChainedFunction from '../utils/createChainedFunction';\nimport deprecatedPropType from '../utils/deprecatedPropType';\nimport withStyles from '../styles/withStyles';\nimport Modal from '../Modal';\nimport Grow from '../Grow';\nimport Paper from '../Paper';\nexport function getOffsetTop(rect, vertical) {\n  var offset = 0;\n\n  if (typeof vertical === 'number') {\n    offset = vertical;\n  } else if (vertical === 'center') {\n    offset = rect.height / 2;\n  } else if (vertical === 'bottom') {\n    offset = rect.height;\n  }\n\n  return offset;\n}\nexport function getOffsetLeft(rect, horizontal) {\n  var offset = 0;\n\n  if (typeof horizontal === 'number') {\n    offset = horizontal;\n  } else if (horizontal === 'center') {\n    offset = rect.width / 2;\n  } else if (horizontal === 'right') {\n    offset = rect.width;\n  }\n\n  return offset;\n}\n\nfunction getTransformOriginValue(transformOrigin) {\n  return [transformOrigin.horizontal, transformOrigin.vertical].map(function (n) {\n    return typeof n === 'number' ? \"\".concat(n, \"px\") : n;\n  }).join(' ');\n} // Sum the scrollTop between two elements.\n\n\nfunction getScrollParent(parent, child) {\n  var element = child;\n  var scrollTop = 0;\n\n  while (element && element !== parent) {\n    element = element.parentElement;\n    scrollTop += element.scrollTop;\n  }\n\n  return scrollTop;\n}\n\nfunction getAnchorEl(anchorEl) {\n  return typeof anchorEl === 'function' ? anchorEl() : anchorEl;\n}\n\nexport var styles = {\n  /* Styles applied to the root element. */\n  root: {},\n\n  /* Styles applied to the `Paper` component. */\n  paper: {\n    position: 'absolute',\n    overflowY: 'auto',\n    overflowX: 'hidden',\n    // So we see the popover when it's empty.\n    // It's most likely on issue on userland.\n    minWidth: 16,\n    minHeight: 16,\n    maxWidth: 'calc(100% - 32px)',\n    maxHeight: 'calc(100% - 32px)',\n    // We disable the focus ring for mouse, touch and keyboard users.\n    outline: 0\n  }\n};\nvar Popover = /*#__PURE__*/React.forwardRef(function Popover(props, ref) {\n  var action = props.action,\n      anchorEl = props.anchorEl,\n      _props$anchorOrigin = props.anchorOrigin,\n      anchorOrigin = _props$anchorOrigin === void 0 ? {\n    vertical: 'top',\n    horizontal: 'left'\n  } : _props$anchorOrigin,\n      anchorPosition = props.anchorPosition,\n      _props$anchorReferenc = props.anchorReference,\n      anchorReference = _props$anchorReferenc === void 0 ? 'anchorEl' : _props$anchorReferenc,\n      children = props.children,\n      classes = props.classes,\n      className = props.className,\n      containerProp = props.container,\n      _props$elevation = props.elevation,\n      elevation = _props$elevation === void 0 ? 8 : _props$elevation,\n      getContentAnchorEl = props.getContentAnchorEl,\n      _props$marginThreshol = props.marginThreshold,\n      marginThreshold = _props$marginThreshol === void 0 ? 16 : _props$marginThreshol,\n      onEnter = props.onEnter,\n      onEntered = props.onEntered,\n      onEntering = props.onEntering,\n      onExit = props.onExit,\n      onExited = props.onExited,\n      onExiting = props.onExiting,\n      open = props.open,\n      _props$PaperProps = props.PaperProps,\n      PaperProps = _props$PaperProps === void 0 ? {} : _props$PaperProps,\n      _props$transformOrigi = props.transformOrigin,\n      transformOrigin = _props$transformOrigi === void 0 ? {\n    vertical: 'top',\n    horizontal: 'left'\n  } : _props$transformOrigi,\n      _props$TransitionComp = props.TransitionComponent,\n      TransitionComponent = _props$TransitionComp === void 0 ? Grow : _props$TransitionComp,\n      _props$transitionDura = props.transitionDuration,\n      transitionDurationProp = _props$transitionDura === void 0 ? 'auto' : _props$transitionDura,\n      _props$TransitionProp = props.TransitionProps,\n      TransitionProps = _props$TransitionProp === void 0 ? {} : _props$TransitionProp,\n      other = _objectWithoutProperties(props, [\"action\", \"anchorEl\", \"anchorOrigin\", \"anchorPosition\", \"anchorReference\", \"children\", \"classes\", \"className\", \"container\", \"elevation\", \"getContentAnchorEl\", \"marginThreshold\", \"onEnter\", \"onEntered\", \"onEntering\", \"onExit\", \"onExited\", \"onExiting\", \"open\", \"PaperProps\", \"transformOrigin\", \"TransitionComponent\", \"transitionDuration\", \"TransitionProps\"]);\n\n  var paperRef = React.useRef(); // Returns the top/left offset of the position\n  // to attach to on the anchor element (or body if none is provided)\n\n  var getAnchorOffset = React.useCallback(function (contentAnchorOffset) {\n    if (anchorReference === 'anchorPosition') {\n      if (process.env.NODE_ENV !== 'production') {\n        if (!anchorPosition) {\n          console.error('Material-UI: You need to provide a `anchorPosition` prop when using ' + '<Popover anchorReference=\"anchorPosition\" />.');\n        }\n      }\n\n      return anchorPosition;\n    }\n\n    var resolvedAnchorEl = getAnchorEl(anchorEl); // If an anchor element wasn't provided, just use the parent body element of this Popover\n\n    var anchorElement = resolvedAnchorEl && resolvedAnchorEl.nodeType === 1 ? resolvedAnchorEl : ownerDocument(paperRef.current).body;\n    var anchorRect = anchorElement.getBoundingClientRect();\n\n    if (process.env.NODE_ENV !== 'production') {\n      var box = anchorElement.getBoundingClientRect();\n\n      if (process.env.NODE_ENV !== 'test' && box.top === 0 && box.left === 0 && box.right === 0 && box.bottom === 0) {\n        console.warn(['Material-UI: The `anchorEl` prop provided to the component is invalid.', 'The anchor element should be part of the document layout.', \"Make sure the element is present in the document or that it's not display none.\"].join('\\n'));\n      }\n    }\n\n    var anchorVertical = contentAnchorOffset === 0 ? anchorOrigin.vertical : 'center';\n    return {\n      top: anchorRect.top + getOffsetTop(anchorRect, anchorVertical),\n      left: anchorRect.left + getOffsetLeft(anchorRect, anchorOrigin.horizontal)\n    };\n  }, [anchorEl, anchorOrigin.horizontal, anchorOrigin.vertical, anchorPosition, anchorReference]); // Returns the vertical offset of inner content to anchor the transform on if provided\n\n  var getContentAnchorOffset = React.useCallback(function (element) {\n    var contentAnchorOffset = 0;\n\n    if (getContentAnchorEl && anchorReference === 'anchorEl') {\n      var contentAnchorEl = getContentAnchorEl(element);\n\n      if (contentAnchorEl && element.contains(contentAnchorEl)) {\n        var scrollTop = getScrollParent(element, contentAnchorEl);\n        contentAnchorOffset = contentAnchorEl.offsetTop + contentAnchorEl.clientHeight / 2 - scrollTop || 0;\n      } // != the default value\n\n\n      if (process.env.NODE_ENV !== 'production') {\n        if (anchorOrigin.vertical !== 'top') {\n          console.error(['Material-UI: You can not change the default `anchorOrigin.vertical` value ', 'when also providing the `getContentAnchorEl` prop to the popover component.', 'Only use one of the two props.', 'Set `getContentAnchorEl` to `null | undefined`' + ' or leave `anchorOrigin.vertical` unchanged.'].join('\\n'));\n        }\n      }\n    }\n\n    return contentAnchorOffset;\n  }, [anchorOrigin.vertical, anchorReference, getContentAnchorEl]); // Return the base transform origin using the element\n  // and taking the content anchor offset into account if in use\n\n  var getTransformOrigin = React.useCallback(function (elemRect) {\n    var contentAnchorOffset = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;\n    return {\n      vertical: getOffsetTop(elemRect, transformOrigin.vertical) + contentAnchorOffset,\n      horizontal: getOffsetLeft(elemRect, transformOrigin.horizontal)\n    };\n  }, [transformOrigin.horizontal, transformOrigin.vertical]);\n  var getPositioningStyle = React.useCallback(function (element) {\n    // Check if the parent has requested anchoring on an inner content node\n    var contentAnchorOffset = getContentAnchorOffset(element);\n    var elemRect = {\n      width: element.offsetWidth,\n      height: element.offsetHeight\n    }; // Get the transform origin point on the element itself\n\n    var elemTransformOrigin = getTransformOrigin(elemRect, contentAnchorOffset);\n\n    if (anchorReference === 'none') {\n      return {\n        top: null,\n        left: null,\n        transformOrigin: getTransformOriginValue(elemTransformOrigin)\n      };\n    } // Get the offset of of the anchoring element\n\n\n    var anchorOffset = getAnchorOffset(contentAnchorOffset); // Calculate element positioning\n\n    var top = anchorOffset.top - elemTransformOrigin.vertical;\n    var left = anchorOffset.left - elemTransformOrigin.horizontal;\n    var bottom = top + elemRect.height;\n    var right = left + elemRect.width; // Use the parent window of the anchorEl if provided\n\n    var containerWindow = ownerWindow(getAnchorEl(anchorEl)); // Window thresholds taking required margin into account\n\n    var heightThreshold = containerWindow.innerHeight - marginThreshold;\n    var widthThreshold = containerWindow.innerWidth - marginThreshold; // Check if the vertical axis needs shifting\n\n    if (top < marginThreshold) {\n      var diff = top - marginThreshold;\n      top -= diff;\n      elemTransformOrigin.vertical += diff;\n    } else if (bottom > heightThreshold) {\n      var _diff = bottom - heightThreshold;\n\n      top -= _diff;\n      elemTransformOrigin.vertical += _diff;\n    }\n\n    if (process.env.NODE_ENV !== 'production') {\n      if (elemRect.height > heightThreshold && elemRect.height && heightThreshold) {\n        console.error(['Material-UI: The popover component is too tall.', \"Some part of it can not be seen on the screen (\".concat(elemRect.height - heightThreshold, \"px).\"), 'Please consider adding a `max-height` to improve the user-experience.'].join('\\n'));\n      }\n    } // Check if the horizontal axis needs shifting\n\n\n    if (left < marginThreshold) {\n      var _diff2 = left - marginThreshold;\n\n      left -= _diff2;\n      elemTransformOrigin.horizontal += _diff2;\n    } else if (right > widthThreshold) {\n      var _diff3 = right - widthThreshold;\n\n      left -= _diff3;\n      elemTransformOrigin.horizontal += _diff3;\n    }\n\n    return {\n      top: \"\".concat(Math.round(top), \"px\"),\n      left: \"\".concat(Math.round(left), \"px\"),\n      transformOrigin: getTransformOriginValue(elemTransformOrigin)\n    };\n  }, [anchorEl, anchorReference, getAnchorOffset, getContentAnchorOffset, getTransformOrigin, marginThreshold]);\n  var setPositioningStyles = React.useCallback(function () {\n    var element = paperRef.current;\n\n    if (!element) {\n      return;\n    }\n\n    var positioning = getPositioningStyle(element);\n\n    if (positioning.top !== null) {\n      element.style.top = positioning.top;\n    }\n\n    if (positioning.left !== null) {\n      element.style.left = positioning.left;\n    }\n\n    element.style.transformOrigin = positioning.transformOrigin;\n  }, [getPositioningStyle]);\n\n  var handleEntering = function handleEntering(element, isAppearing) {\n    if (onEntering) {\n      onEntering(element, isAppearing);\n    }\n\n    setPositioningStyles();\n  };\n\n  var handlePaperRef = React.useCallback(function (instance) {\n    // #StrictMode ready\n    paperRef.current = ReactDOM.findDOMNode(instance);\n  }, []);\n  React.useEffect(function () {\n    if (open) {\n      setPositioningStyles();\n    }\n  });\n  React.useImperativeHandle(action, function () {\n    return open ? {\n      updatePosition: function updatePosition() {\n        setPositioningStyles();\n      }\n    } : null;\n  }, [open, setPositioningStyles]);\n  React.useEffect(function () {\n    if (!open) {\n      return undefined;\n    }\n\n    var handleResize = debounce(function () {\n      setPositioningStyles();\n    });\n    window.addEventListener('resize', handleResize);\n    return function () {\n      handleResize.clear();\n      window.removeEventListener('resize', handleResize);\n    };\n  }, [open, setPositioningStyles]);\n  var transitionDuration = transitionDurationProp;\n\n  if (transitionDurationProp === 'auto' && !TransitionComponent.muiSupportAuto) {\n    transitionDuration = undefined;\n  } // If the container prop is provided, use that\n  // If the anchorEl prop is provided, use its parent body element as the container\n  // If neither are provided let the Modal take care of choosing the container\n\n\n  var container = containerProp || (anchorEl ? ownerDocument(getAnchorEl(anchorEl)).body : undefined);\n  return /*#__PURE__*/React.createElement(Modal, _extends({\n    container: container,\n    open: open,\n    ref: ref,\n    BackdropProps: {\n      invisible: true\n    },\n    className: clsx(classes.root, className)\n  }, other), /*#__PURE__*/React.createElement(TransitionComponent, _extends({\n    appear: true,\n    in: open,\n    onEnter: onEnter,\n    onEntered: onEntered,\n    onExit: onExit,\n    onExited: onExited,\n    onExiting: onExiting,\n    timeout: transitionDuration\n  }, TransitionProps, {\n    onEntering: createChainedFunction(handleEntering, TransitionProps.onEntering)\n  }), /*#__PURE__*/React.createElement(Paper, _extends({\n    elevation: elevation,\n    ref: handlePaperRef\n  }, PaperProps, {\n    className: clsx(classes.paper, PaperProps.className)\n  }), children)));\n});\nprocess.env.NODE_ENV !== \"production\" ? Popover.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * A ref for imperative actions.\n   * It currently only supports updatePosition() action.\n   */\n  action: refType,\n\n  /**\n   * A HTML element, or a function that returns it.\n   * It's used to set the position of the popover.\n   */\n  anchorEl: chainPropTypes(PropTypes.oneOfType([HTMLElementType, PropTypes.func]), function (props) {\n    if (props.open && (!props.anchorReference || props.anchorReference === 'anchorEl')) {\n      var resolvedAnchorEl = getAnchorEl(props.anchorEl);\n\n      if (resolvedAnchorEl && resolvedAnchorEl.nodeType === 1) {\n        var box = resolvedAnchorEl.getBoundingClientRect();\n\n        if (process.env.NODE_ENV !== 'test' && box.top === 0 && box.left === 0 && box.right === 0 && box.bottom === 0) {\n          return new Error(['Material-UI: The `anchorEl` prop provided to the component is invalid.', 'The anchor element should be part of the document layout.', \"Make sure the element is present in the document or that it's not display none.\"].join('\\n'));\n        }\n      } else {\n        return new Error(['Material-UI: The `anchorEl` prop provided to the component is invalid.', \"It should be an Element instance but it's `\".concat(resolvedAnchorEl, \"` instead.\")].join('\\n'));\n      }\n    }\n\n    return null;\n  }),\n\n  /**\n   * This is the point on the anchor where the popover's\n   * `anchorEl` will attach to. This is not used when the\n   * anchorReference is 'anchorPosition'.\n   *\n   * Options:\n   * vertical: [top, center, bottom];\n   * horizontal: [left, center, right].\n   */\n  anchorOrigin: PropTypes.shape({\n    horizontal: PropTypes.oneOfType([PropTypes.oneOf(['center', 'left', 'right']), PropTypes.number]).isRequired,\n    vertical: PropTypes.oneOfType([PropTypes.oneOf(['bottom', 'center', 'top']), PropTypes.number]).isRequired\n  }),\n\n  /**\n   * This is the position that may be used\n   * to set the position of the popover.\n   * The coordinates are relative to\n   * the application's client area.\n   */\n  anchorPosition: PropTypes.shape({\n    left: PropTypes.number.isRequired,\n    top: PropTypes.number.isRequired\n  }),\n\n  /**\n   * This determines which anchor prop to refer to to set\n   * the position of the popover.\n   */\n  anchorReference: PropTypes.oneOf(['anchorEl', 'anchorPosition', 'none']),\n\n  /**\n   * The content of the component.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * A HTML element, component instance, or function that returns either.\n   * The `container` will passed to the Modal component.\n   *\n   * By default, it uses the body of the anchorEl's top-level document object,\n   * so it's simply `document.body` most of the time.\n   */\n  container: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .oneOfType([HTMLElementType, PropTypes.instanceOf(React.Component), PropTypes.func]),\n\n  /**\n   * The elevation of the popover.\n   */\n  elevation: PropTypes.number,\n\n  /**\n   * This function is called in order to retrieve the content anchor element.\n   * It's the opposite of the `anchorEl` prop.\n   * The content anchor element should be an element inside the popover.\n   * It's used to correctly scroll and set the position of the popover.\n   * The positioning strategy tries to make the content anchor element just above the\n   * anchor element.\n   */\n  getContentAnchorEl: PropTypes.func,\n\n  /**\n   * Specifies how close to the edge of the window the popover can appear.\n   */\n  marginThreshold: PropTypes.number,\n\n  /**\n   * Callback fired when the component requests to be closed.\n   */\n  onClose: PropTypes.func,\n\n  /**\n   * Callback fired before the component is entering.\n   * @deprecated Use the `TransitionProps` prop instead.\n   */\n  onEnter: deprecatedPropType(PropTypes.func, 'Use the `TransitionProps` prop instead.'),\n\n  /**\n   * Callback fired when the component has entered.\n   * @deprecated Use the `TransitionProps` prop instead.\n   */\n  onEntered: deprecatedPropType(PropTypes.func, 'Use the `TransitionProps` prop instead.'),\n\n  /**\n   * Callback fired when the component is entering.\n   * @deprecated Use the `TransitionProps` prop instead.\n   */\n  onEntering: deprecatedPropType(PropTypes.func, 'Use the `TransitionProps` prop instead.'),\n\n  /**\n   * Callback fired before the component is exiting.\n   * @deprecated Use the `TransitionProps` prop instead.\n   */\n  onExit: deprecatedPropType(PropTypes.func, 'Use the `TransitionProps` prop instead.'),\n\n  /**\n   * Callback fired when the component has exited.\n   * @deprecated Use the `TransitionProps` prop instead.\n   */\n  onExited: deprecatedPropType(PropTypes.func, 'Use the `TransitionProps` prop instead.'),\n\n  /**\n   * Callback fired when the component is exiting.\n   * @deprecated Use the `TransitionProps` prop instead.\n   */\n  onExiting: deprecatedPropType(PropTypes.func, 'Use the `TransitionProps` prop instead.'),\n\n  /**\n   * If `true`, the popover is visible.\n   */\n  open: PropTypes.bool.isRequired,\n\n  /**\n   * Props applied to the [`Paper`](/api/paper/) element.\n   */\n  PaperProps: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .shape({\n    component: elementTypeAcceptingRef\n  }),\n\n  /**\n   * This is the point on the popover which\n   * will attach to the anchor's origin.\n   *\n   * Options:\n   * vertical: [top, center, bottom, x(px)];\n   * horizontal: [left, center, right, x(px)].\n   */\n  transformOrigin: PropTypes.shape({\n    horizontal: PropTypes.oneOfType([PropTypes.oneOf(['center', 'left', 'right']), PropTypes.number]).isRequired,\n    vertical: PropTypes.oneOfType([PropTypes.oneOf(['bottom', 'center', 'top']), PropTypes.number]).isRequired\n  }),\n\n  /**\n   * The component used for the transition.\n   * [Follow this guide](/components/transitions/#transitioncomponent-prop) to learn more about the requirements for this component.\n   */\n  TransitionComponent: PropTypes.elementType,\n\n  /**\n   * Set to 'auto' to automatically calculate transition time based on height.\n   */\n  transitionDuration: PropTypes.oneOfType([PropTypes.oneOf(['auto']), PropTypes.number, PropTypes.shape({\n    appear: PropTypes.number,\n    enter: PropTypes.number,\n    exit: PropTypes.number\n  })]),\n\n  /**\n   * Props applied to the [`Transition`](http://reactcommunity.org/react-transition-group/transition#Transition-props) element.\n   */\n  TransitionProps: PropTypes.object\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiPopover'\n})(Popover);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport withStyles from '../styles/withStyles';\nimport ListContext from './ListContext';\nexport var styles = {\n  /* Styles applied to the root element. */\n  root: {\n    listStyle: 'none',\n    margin: 0,\n    padding: 0,\n    position: 'relative'\n  },\n\n  /* Styles applied to the root element if `disablePadding={false}`. */\n  padding: {\n    paddingTop: 8,\n    paddingBottom: 8\n  },\n\n  /* Styles applied to the root element if dense. */\n  dense: {},\n\n  /* Styles applied to the root element if a `subheader` is provided. */\n  subheader: {\n    paddingTop: 0\n  }\n};\nvar List = /*#__PURE__*/React.forwardRef(function List(props, ref) {\n  var children = props.children,\n      classes = props.classes,\n      className = props.className,\n      _props$component = props.component,\n      Component = _props$component === void 0 ? 'ul' : _props$component,\n      _props$dense = props.dense,\n      dense = _props$dense === void 0 ? false : _props$dense,\n      _props$disablePadding = props.disablePadding,\n      disablePadding = _props$disablePadding === void 0 ? false : _props$disablePadding,\n      subheader = props.subheader,\n      other = _objectWithoutProperties(props, [\"children\", \"classes\", \"className\", \"component\", \"dense\", \"disablePadding\", \"subheader\"]);\n\n  var context = React.useMemo(function () {\n    return {\n      dense: dense\n    };\n  }, [dense]);\n  return /*#__PURE__*/React.createElement(ListContext.Provider, {\n    value: context\n  }, /*#__PURE__*/React.createElement(Component, _extends({\n    className: clsx(classes.root, className, dense && classes.dense, !disablePadding && classes.padding, subheader && classes.subheader),\n    ref: ref\n  }, other), subheader, children));\n});\nprocess.env.NODE_ENV !== \"production\" ? List.propTypes = {\n  /**\n   * The content of the component.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object.isRequired,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The component used for the root node.\n   * Either a string to use a HTML element or a component.\n   */\n  component: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .elementType,\n\n  /**\n   * If `true`, compact vertical padding designed for keyboard and mouse input will be used for\n   * the list and list items.\n   * The prop is available to descendant components as the `dense` context.\n   */\n  dense: PropTypes.bool,\n\n  /**\n   * If `true`, vertical padding will be removed from the list.\n   */\n  disablePadding: PropTypes.bool,\n\n  /**\n   * The content of the subheader, normally `ListSubheader`.\n   */\n  subheader: PropTypes.node\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiList'\n})(List);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport { isFragment } from 'react-is';\nimport PropTypes from 'prop-types';\nimport * as ReactDOM from 'react-dom';\nimport ownerDocument from '../utils/ownerDocument';\nimport List from '../List';\nimport getScrollbarSize from '../utils/getScrollbarSize';\nimport useForkRef from '../utils/useForkRef';\n\nfunction nextItem(list, item, disableListWrap) {\n  if (list === item) {\n    return list.firstChild;\n  }\n\n  if (item && item.nextElementSibling) {\n    return item.nextElementSibling;\n  }\n\n  return disableListWrap ? null : list.firstChild;\n}\n\nfunction previousItem(list, item, disableListWrap) {\n  if (list === item) {\n    return disableListWrap ? list.firstChild : list.lastChild;\n  }\n\n  if (item && item.previousElementSibling) {\n    return item.previousElementSibling;\n  }\n\n  return disableListWrap ? null : list.lastChild;\n}\n\nfunction textCriteriaMatches(nextFocus, textCriteria) {\n  if (textCriteria === undefined) {\n    return true;\n  }\n\n  var text = nextFocus.innerText;\n\n  if (text === undefined) {\n    // jsdom doesn't support innerText\n    text = nextFocus.textContent;\n  }\n\n  text = text.trim().toLowerCase();\n\n  if (text.length === 0) {\n    return false;\n  }\n\n  if (textCriteria.repeating) {\n    return text[0] === textCriteria.keys[0];\n  }\n\n  return text.indexOf(textCriteria.keys.join('')) === 0;\n}\n\nfunction moveFocus(list, currentFocus, disableListWrap, disabledItemsFocusable, traversalFunction, textCriteria) {\n  var wrappedOnce = false;\n  var nextFocus = traversalFunction(list, currentFocus, currentFocus ? disableListWrap : false);\n\n  while (nextFocus) {\n    // Prevent infinite loop.\n    if (nextFocus === list.firstChild) {\n      if (wrappedOnce) {\n        return;\n      }\n\n      wrappedOnce = true;\n    } // Same logic as useAutocomplete.js\n\n\n    var nextFocusDisabled = disabledItemsFocusable ? false : nextFocus.disabled || nextFocus.getAttribute('aria-disabled') === 'true';\n\n    if (!nextFocus.hasAttribute('tabindex') || !textCriteriaMatches(nextFocus, textCriteria) || nextFocusDisabled) {\n      // Move to the next element.\n      nextFocus = traversalFunction(list, nextFocus, disableListWrap);\n    } else {\n      nextFocus.focus();\n      return;\n    }\n  }\n}\n\nvar useEnhancedEffect = typeof window === 'undefined' ? React.useEffect : React.useLayoutEffect;\n/**\n * A permanently displayed menu following https://www.w3.org/TR/wai-aria-practices/#menubutton.\n * It's exposed to help customization of the [`Menu`](/api/menu/) component. If you\n * use it separately you need to move focus into the component manually. Once\n * the focus is placed inside the component it is fully keyboard accessible.\n */\n\nvar MenuList = /*#__PURE__*/React.forwardRef(function MenuList(props, ref) {\n  var actions = props.actions,\n      _props$autoFocus = props.autoFocus,\n      autoFocus = _props$autoFocus === void 0 ? false : _props$autoFocus,\n      _props$autoFocusItem = props.autoFocusItem,\n      autoFocusItem = _props$autoFocusItem === void 0 ? false : _props$autoFocusItem,\n      children = props.children,\n      className = props.className,\n      _props$disabledItemsF = props.disabledItemsFocusable,\n      disabledItemsFocusable = _props$disabledItemsF === void 0 ? false : _props$disabledItemsF,\n      _props$disableListWra = props.disableListWrap,\n      disableListWrap = _props$disableListWra === void 0 ? false : _props$disableListWra,\n      onKeyDown = props.onKeyDown,\n      _props$variant = props.variant,\n      variant = _props$variant === void 0 ? 'selectedMenu' : _props$variant,\n      other = _objectWithoutProperties(props, [\"actions\", \"autoFocus\", \"autoFocusItem\", \"children\", \"className\", \"disabledItemsFocusable\", \"disableListWrap\", \"onKeyDown\", \"variant\"]);\n\n  var listRef = React.useRef(null);\n  var textCriteriaRef = React.useRef({\n    keys: [],\n    repeating: true,\n    previousKeyMatched: true,\n    lastTime: null\n  });\n  useEnhancedEffect(function () {\n    if (autoFocus) {\n      listRef.current.focus();\n    }\n  }, [autoFocus]);\n  React.useImperativeHandle(actions, function () {\n    return {\n      adjustStyleForScrollbar: function adjustStyleForScrollbar(containerElement, theme) {\n        // Let's ignore that piece of logic if users are already overriding the width\n        // of the menu.\n        var noExplicitWidth = !listRef.current.style.width;\n\n        if (containerElement.clientHeight < listRef.current.clientHeight && noExplicitWidth) {\n          var scrollbarSize = \"\".concat(getScrollbarSize(true), \"px\");\n          listRef.current.style[theme.direction === 'rtl' ? 'paddingLeft' : 'paddingRight'] = scrollbarSize;\n          listRef.current.style.width = \"calc(100% + \".concat(scrollbarSize, \")\");\n        }\n\n        return listRef.current;\n      }\n    };\n  }, []);\n\n  var handleKeyDown = function handleKeyDown(event) {\n    var list = listRef.current;\n    var key = event.key;\n    /**\n     * @type {Element} - will always be defined since we are in a keydown handler\n     * attached to an element. A keydown event is either dispatched to the activeElement\n     * or document.body or document.documentElement. Only the first case will\n     * trigger this specific handler.\n     */\n\n    var currentFocus = ownerDocument(list).activeElement;\n\n    if (key === 'ArrowDown') {\n      // Prevent scroll of the page\n      event.preventDefault();\n      moveFocus(list, currentFocus, disableListWrap, disabledItemsFocusable, nextItem);\n    } else if (key === 'ArrowUp') {\n      event.preventDefault();\n      moveFocus(list, currentFocus, disableListWrap, disabledItemsFocusable, previousItem);\n    } else if (key === 'Home') {\n      event.preventDefault();\n      moveFocus(list, null, disableListWrap, disabledItemsFocusable, nextItem);\n    } else if (key === 'End') {\n      event.preventDefault();\n      moveFocus(list, null, disableListWrap, disabledItemsFocusable, previousItem);\n    } else if (key.length === 1) {\n      var criteria = textCriteriaRef.current;\n      var lowerKey = key.toLowerCase();\n      var currTime = performance.now();\n\n      if (criteria.keys.length > 0) {\n        // Reset\n        if (currTime - criteria.lastTime > 500) {\n          criteria.keys = [];\n          criteria.repeating = true;\n          criteria.previousKeyMatched = true;\n        } else if (criteria.repeating && lowerKey !== criteria.keys[0]) {\n          criteria.repeating = false;\n        }\n      }\n\n      criteria.lastTime = currTime;\n      criteria.keys.push(lowerKey);\n      var keepFocusOnCurrent = currentFocus && !criteria.repeating && textCriteriaMatches(currentFocus, criteria);\n\n      if (criteria.previousKeyMatched && (keepFocusOnCurrent || moveFocus(list, currentFocus, false, disabledItemsFocusable, nextItem, criteria))) {\n        event.preventDefault();\n      } else {\n        criteria.previousKeyMatched = false;\n      }\n    }\n\n    if (onKeyDown) {\n      onKeyDown(event);\n    }\n  };\n\n  var handleOwnRef = React.useCallback(function (instance) {\n    // #StrictMode ready\n    listRef.current = ReactDOM.findDOMNode(instance);\n  }, []);\n  var handleRef = useForkRef(handleOwnRef, ref);\n  /**\n   * the index of the item should receive focus\n   * in a `variant=\"selectedMenu\"` it's the first `selected` item\n   * otherwise it's the very first item.\n   */\n\n  var activeItemIndex = -1; // since we inject focus related props into children we have to do a lookahead\n  // to check if there is a `selected` item. We're looking for the last `selected`\n  // item and use the first valid item as a fallback\n\n  React.Children.forEach(children, function (child, index) {\n    if (! /*#__PURE__*/React.isValidElement(child)) {\n      return;\n    }\n\n    if (process.env.NODE_ENV !== 'production') {\n      if (isFragment(child)) {\n        console.error([\"Material-UI: The Menu component doesn't accept a Fragment as a child.\", 'Consider providing an array instead.'].join('\\n'));\n      }\n    }\n\n    if (!child.props.disabled) {\n      if (variant === 'selectedMenu' && child.props.selected) {\n        activeItemIndex = index;\n      } else if (activeItemIndex === -1) {\n        activeItemIndex = index;\n      }\n    }\n  });\n  var items = React.Children.map(children, function (child, index) {\n    if (index === activeItemIndex) {\n      var newChildProps = {};\n\n      if (autoFocusItem) {\n        newChildProps.autoFocus = true;\n      }\n\n      if (child.props.tabIndex === undefined && variant === 'selectedMenu') {\n        newChildProps.tabIndex = 0;\n      }\n\n      return /*#__PURE__*/React.cloneElement(child, newChildProps);\n    }\n\n    return child;\n  });\n  return /*#__PURE__*/React.createElement(List, _extends({\n    role: \"menu\",\n    ref: handleRef,\n    className: className,\n    onKeyDown: handleKeyDown,\n    tabIndex: autoFocus ? 0 : -1\n  }, other), items);\n});\nprocess.env.NODE_ENV !== \"production\" ? MenuList.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * If `true`, will focus the `[role=\"menu\"]` container and move into tab order.\n   */\n  autoFocus: PropTypes.bool,\n\n  /**\n   * If `true`, will focus the first menuitem if `variant=\"menu\"` or selected item\n   * if `variant=\"selectedMenu\"`.\n   */\n  autoFocusItem: PropTypes.bool,\n\n  /**\n   * MenuList contents, normally `MenuItem`s.\n   */\n  children: PropTypes.node,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * If `true`, will allow focus on disabled items.\n   */\n  disabledItemsFocusable: PropTypes.bool,\n\n  /**\n   * If `true`, the menu items will not wrap focus.\n   */\n  disableListWrap: PropTypes.bool,\n\n  /**\n   * @ignore\n   */\n  onKeyDown: PropTypes.func,\n\n  /**\n   * The variant to use. Use `menu` to prevent selected items from impacting the initial focus\n   * and the vertical alignment relative to the anchor element.\n   */\n  variant: PropTypes.oneOf(['menu', 'selectedMenu'])\n} : void 0;\nexport default MenuList;","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport { isFragment } from 'react-is';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport { HTMLElementType } from '@material-ui/utils';\nimport withStyles from '../styles/withStyles';\nimport Popover from '../Popover';\nimport MenuList from '../MenuList';\nimport * as ReactDOM from 'react-dom';\nimport setRef from '../utils/setRef';\nimport useTheme from '../styles/useTheme';\nimport deprecatedPropType from '../utils/deprecatedPropType';\nvar RTL_ORIGIN = {\n  vertical: 'top',\n  horizontal: 'right'\n};\nvar LTR_ORIGIN = {\n  vertical: 'top',\n  horizontal: 'left'\n};\nexport var styles = {\n  /* Styles applied to the `Paper` component. */\n  paper: {\n    // specZ: The maximum height of a simple menu should be one or more rows less than the view\n    // height. This ensures a tapable area outside of the simple menu with which to dismiss\n    // the menu.\n    maxHeight: 'calc(100% - 96px)',\n    // Add iOS momentum scrolling.\n    WebkitOverflowScrolling: 'touch'\n  },\n\n  /* Styles applied to the `List` component via `MenuList`. */\n  list: {\n    // We disable the focus ring for mouse, touch and keyboard users.\n    outline: 0\n  }\n};\nvar Menu = /*#__PURE__*/React.forwardRef(function Menu(props, ref) {\n  var _props$autoFocus = props.autoFocus,\n      autoFocus = _props$autoFocus === void 0 ? true : _props$autoFocus,\n      children = props.children,\n      classes = props.classes,\n      _props$disableAutoFoc = props.disableAutoFocusItem,\n      disableAutoFocusItem = _props$disableAutoFoc === void 0 ? false : _props$disableAutoFoc,\n      _props$MenuListProps = props.MenuListProps,\n      MenuListProps = _props$MenuListProps === void 0 ? {} : _props$MenuListProps,\n      onClose = props.onClose,\n      onEnteringProp = props.onEntering,\n      open = props.open,\n      _props$PaperProps = props.PaperProps,\n      PaperProps = _props$PaperProps === void 0 ? {} : _props$PaperProps,\n      PopoverClasses = props.PopoverClasses,\n      _props$transitionDura = props.transitionDuration,\n      transitionDuration = _props$transitionDura === void 0 ? 'auto' : _props$transitionDura,\n      _props$TransitionProp = props.TransitionProps;\n  _props$TransitionProp = _props$TransitionProp === void 0 ? {} : _props$TransitionProp;\n\n  var onEntering = _props$TransitionProp.onEntering,\n      TransitionProps = _objectWithoutProperties(_props$TransitionProp, [\"onEntering\"]),\n      _props$variant = props.variant,\n      variant = _props$variant === void 0 ? 'selectedMenu' : _props$variant,\n      other = _objectWithoutProperties(props, [\"autoFocus\", \"children\", \"classes\", \"disableAutoFocusItem\", \"MenuListProps\", \"onClose\", \"onEntering\", \"open\", \"PaperProps\", \"PopoverClasses\", \"transitionDuration\", \"TransitionProps\", \"variant\"]);\n\n  var theme = useTheme();\n  var autoFocusItem = autoFocus && !disableAutoFocusItem && open;\n  var menuListActionsRef = React.useRef(null);\n  var contentAnchorRef = React.useRef(null);\n\n  var getContentAnchorEl = function getContentAnchorEl() {\n    return contentAnchorRef.current;\n  };\n\n  var handleEntering = function handleEntering(element, isAppearing) {\n    if (menuListActionsRef.current) {\n      menuListActionsRef.current.adjustStyleForScrollbar(element, theme);\n    }\n\n    if (onEnteringProp) {\n      onEnteringProp(element, isAppearing);\n    }\n\n    if (onEntering) {\n      onEntering(element, isAppearing);\n    }\n  };\n\n  var handleListKeyDown = function handleListKeyDown(event) {\n    if (event.key === 'Tab') {\n      event.preventDefault();\n\n      if (onClose) {\n        onClose(event, 'tabKeyDown');\n      }\n    }\n  };\n  /**\n   * the index of the item should receive focus\n   * in a `variant=\"selectedMenu\"` it's the first `selected` item\n   * otherwise it's the very first item.\n   */\n\n\n  var activeItemIndex = -1; // since we inject focus related props into children we have to do a lookahead\n  // to check if there is a `selected` item. We're looking for the last `selected`\n  // item and use the first valid item as a fallback\n\n  React.Children.map(children, function (child, index) {\n    if (! /*#__PURE__*/React.isValidElement(child)) {\n      return;\n    }\n\n    if (process.env.NODE_ENV !== 'production') {\n      if (isFragment(child)) {\n        console.error([\"Material-UI: The Menu component doesn't accept a Fragment as a child.\", 'Consider providing an array instead.'].join('\\n'));\n      }\n    }\n\n    if (!child.props.disabled) {\n      if (variant !== \"menu\" && child.props.selected) {\n        activeItemIndex = index;\n      } else if (activeItemIndex === -1) {\n        activeItemIndex = index;\n      }\n    }\n  });\n  var items = React.Children.map(children, function (child, index) {\n    if (index === activeItemIndex) {\n      return /*#__PURE__*/React.cloneElement(child, {\n        ref: function ref(instance) {\n          // #StrictMode ready\n          contentAnchorRef.current = ReactDOM.findDOMNode(instance);\n          setRef(child.ref, instance);\n        }\n      });\n    }\n\n    return child;\n  });\n  return /*#__PURE__*/React.createElement(Popover, _extends({\n    getContentAnchorEl: getContentAnchorEl,\n    classes: PopoverClasses,\n    onClose: onClose,\n    TransitionProps: _extends({\n      onEntering: handleEntering\n    }, TransitionProps),\n    anchorOrigin: theme.direction === 'rtl' ? RTL_ORIGIN : LTR_ORIGIN,\n    transformOrigin: theme.direction === 'rtl' ? RTL_ORIGIN : LTR_ORIGIN,\n    PaperProps: _extends({}, PaperProps, {\n      classes: _extends({}, PaperProps.classes, {\n        root: classes.paper\n      })\n    }),\n    open: open,\n    ref: ref,\n    transitionDuration: transitionDuration\n  }, other), /*#__PURE__*/React.createElement(MenuList, _extends({\n    onKeyDown: handleListKeyDown,\n    actions: menuListActionsRef,\n    autoFocus: autoFocus && (activeItemIndex === -1 || disableAutoFocusItem),\n    autoFocusItem: autoFocusItem,\n    variant: variant\n  }, MenuListProps, {\n    className: clsx(classes.list, MenuListProps.className)\n  }), items));\n});\nprocess.env.NODE_ENV !== \"production\" ? Menu.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * A HTML element, or a function that returns it.\n   * It's used to set the position of the menu.\n   */\n  anchorEl: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .oneOfType([HTMLElementType, PropTypes.func]),\n\n  /**\n   * If `true` (Default) will focus the `[role=\"menu\"]` if no focusable child is found. Disabled\n   * children are not focusable. If you set this prop to `false` focus will be placed\n   * on the parent modal container. This has severe accessibility implications\n   * and should only be considered if you manage focus otherwise.\n   */\n  autoFocus: PropTypes.bool,\n\n  /**\n   * Menu contents, normally `MenuItem`s.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * When opening the menu will not focus the active item but the `[role=\"menu\"]`\n   * unless `autoFocus` is also set to `false`. Not using the default means not\n   * following WAI-ARIA authoring practices. Please be considerate about possible\n   * accessibility implications.\n   */\n  disableAutoFocusItem: PropTypes.bool,\n\n  /**\n   * Props applied to the [`MenuList`](/api/menu-list/) element.\n   */\n  MenuListProps: PropTypes.object,\n\n  /**\n   * Callback fired when the component requests to be closed.\n   *\n   * @param {object} event The event source of the callback.\n   * @param {string} reason Can be: `\"escapeKeyDown\"`, `\"backdropClick\"`, `\"tabKeyDown\"`.\n   */\n  onClose: PropTypes.func,\n\n  /**\n   * Callback fired before the Menu enters.\n   * @deprecated Use the `TransitionProps` prop instead.\n   */\n  onEnter: deprecatedPropType(PropTypes.func, 'Use the `TransitionProps` prop instead.'),\n\n  /**\n   * Callback fired when the Menu has entered.\n   * @deprecated Use the `TransitionProps` prop instead.\n   */\n  onEntered: deprecatedPropType(PropTypes.func, 'Use the `TransitionProps` prop instead.'),\n\n  /**\n   * Callback fired when the Menu is entering.\n   * @deprecated Use the `TransitionProps` prop instead.\n   */\n  onEntering: deprecatedPropType(PropTypes.func, 'Use the `TransitionProps` prop instead.'),\n\n  /**\n   * Callback fired before the Menu exits.\n   * @deprecated Use the `TransitionProps` prop instead.\n   */\n  onExit: deprecatedPropType(PropTypes.func, 'Use the `TransitionProps` prop instead.'),\n\n  /**\n   * Callback fired when the Menu has exited.\n   * @deprecated Use the `TransitionProps` prop instead.\n   */\n  onExited: deprecatedPropType(PropTypes.func, 'Use the `TransitionProps` prop instead.'),\n\n  /**\n   * Callback fired when the Menu is exiting.\n   * @deprecated Use the `TransitionProps` prop instead.\n   */\n  onExiting: deprecatedPropType(PropTypes.func, 'Use the `TransitionProps` prop instead.'),\n\n  /**\n   * If `true`, the menu is visible.\n   */\n  open: PropTypes.bool.isRequired,\n\n  /**\n   * @ignore\n   */\n  PaperProps: PropTypes.object,\n\n  /**\n   * `classes` prop applied to the [`Popover`](/api/popover/) element.\n   */\n  PopoverClasses: PropTypes.object,\n\n  /**\n   * The length of the transition in `ms`, or 'auto'\n   */\n  transitionDuration: PropTypes.oneOfType([PropTypes.oneOf(['auto']), PropTypes.number, PropTypes.shape({\n    appear: PropTypes.number,\n    enter: PropTypes.number,\n    exit: PropTypes.number\n  })]),\n\n  /**\n   * Props applied to the transition element.\n   * By default, the element is based on this [`Transition`](http://reactcommunity.org/react-transition-group/transition) component.\n   */\n  TransitionProps: PropTypes.object,\n\n  /**\n   * The variant to use. Use `menu` to prevent selected items from impacting the initial focus\n   * and the vertical alignment relative to the anchor element.\n   */\n  variant: PropTypes.oneOf(['menu', 'selectedMenu'])\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiMenu'\n})(Menu);","/**\n * WARNING: Don't import this directly.\n * Use `MuiError` from `@material-ui/utils/macros/MuiError.macro` instead.\n * @param {number} code\n */\nexport default function formatMuiErrorMessage(code) {\n  // Apply babel-plugin-transform-template-literals in loose mode\n  // loose mode is safe iff we're concatenating primitives\n  // see https://babeljs.io/docs/en/babel-plugin-transform-template-literals#loose\n\n  /* eslint-disable prefer-template */\n  var url = 'https://material-ui.com/production-error/?code=' + code;\n\n  for (var i = 1; i < arguments.length; i += 1) {\n    // rest params over-transpile for this case\n    // eslint-disable-next-line prefer-rest-params\n    url += '&args[]=' + encodeURIComponent(arguments[i]);\n  }\n\n  return 'Minified Material-UI error #' + code + '; visit ' + url + ' for the full message.';\n  /* eslint-enable prefer-template */\n}","/** @license React v17.0.2\n * react.production.min.js\n *\n * Copyright (c) Facebook, Inc. and its affiliates.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n'use strict';var l=require(\"object-assign\"),n=60103,p=60106;exports.Fragment=60107;exports.StrictMode=60108;exports.Profiler=60114;var q=60109,r=60110,t=60112;exports.Suspense=60113;var u=60115,v=60116;\nif(\"function\"===typeof Symbol&&Symbol.for){var 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h={mode:\"hidden\",children:c};0===(f&2)&&b.child!==g?(c=b.child,c.childLanes=0,c.pendingProps=h,g=c.lastEffect,null!==g?(b.firstEffect=c.firstEffect,b.lastEffect=g,g.nextEffect=null):b.firstEffect=b.lastEffect=null):c=Tg(g,h);null!==a?d=Tg(a,d):(d=Xg(d,f,e,null),d.flags|=2);d.return=b;c.return=b;c.sibling=d;b.child=c;return d}function yi(a,b){a.lanes|=b;var c=a.alternate;null!==c&&(c.lanes|=b);sg(a.return,b)}\nfunction zi(a,b,c,d,e,f){var g=a.memoizedState;null===g?a.memoizedState={isBackwards:b,rendering:null,renderingStartTime:0,last:d,tail:c,tailMode:e,lastEffect:f}:(g.isBackwards=b,g.rendering=null,g.renderingStartTime=0,g.last=d,g.tail=c,g.tailMode=e,g.lastEffect=f)}\nfunction Ai(a,b,c){var d=b.pendingProps,e=d.revealOrder,f=d.tail;fi(a,b,d.children,c);d=P.current;if(0!==(d&2))d=d&1|2,b.flags|=64;else{if(null!==a&&0!==(a.flags&64))a:for(a=b.child;null!==a;){if(13===a.tag)null!==a.memoizedState&&yi(a,c);else if(19===a.tag)yi(a,c);else 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yk=__REACT_DEVTOOLS_GLOBAL_HOOK__;if(!yk.isDisabled&&yk.supportsFiber)try{Lf=yk.inject(xk),Mf=yk}catch(a){}}exports.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED=vk;exports.createPortal=uk;\nexports.findDOMNode=function(a){if(null==a)return null;if(1===a.nodeType)return a;var b=a._reactInternals;if(void 0===b){if(\"function\"===typeof a.render)throw Error(y(188));throw Error(y(268,Object.keys(a)));}a=cc(b);a=null===a?null:a.stateNode;return a};exports.flushSync=function(a,b){var c=X;if(0!==(c&48))return a(b);X|=1;try{if(a)return gg(99,a.bind(null,b))}finally{X=c,ig()}};exports.hydrate=function(a,b,c){if(!rk(b))throw Error(y(200));return tk(null,a,b,!0,c)};\nexports.render=function(a,b,c){if(!rk(b))throw Error(y(200));return tk(null,a,b,!1,c)};exports.unmountComponentAtNode=function(a){if(!rk(a))throw Error(y(40));return 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Symbol : {};\n  var iteratorSymbol = $Symbol.iterator || \"@@iterator\";\n  var asyncIteratorSymbol = $Symbol.asyncIterator || \"@@asyncIterator\";\n  var toStringTagSymbol = $Symbol.toStringTag || \"@@toStringTag\";\n\n  function define(obj, key, value) {\n    Object.defineProperty(obj, key, {\n      value: value,\n      enumerable: true,\n      configurable: true,\n      writable: true\n    });\n    return obj[key];\n  }\n  try {\n    // IE 8 has a broken Object.defineProperty that only works on DOM objects.\n    define({}, \"\");\n  } catch (err) {\n    define = function(obj, key, value) {\n      return obj[key] = value;\n    };\n  }\n\n  function wrap(innerFn, outerFn, self, tryLocsList) {\n    // If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator.\n    var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;\n    var generator = Object.create(protoGenerator.prototype);\n    var context = new Context(tryLocsList || []);\n\n    // The ._invoke method unifies the implementations of the .next,\n    // .throw, and .return methods.\n    generator._invoke = makeInvokeMethod(innerFn, self, context);\n\n    return generator;\n  }\n  exports.wrap = wrap;\n\n  // Try/catch helper to minimize deoptimizations. Returns a completion\n  // record like context.tryEntries[i].completion. This interface could\n  // have been (and was previously) designed to take a closure to be\n  // invoked without arguments, but in all the cases we care about we\n  // already have an existing method we want to call, so there's no need\n  // to create a new function object. We can even get away with assuming\n  // the method takes exactly one argument, since that happens to be true\n  // in every case, so we don't have to touch the arguments object. The\n  // only additional allocation required is the completion record, which\n  // has a stable shape and so hopefully should be cheap to allocate.\n  function tryCatch(fn, obj, arg) {\n    try {\n      return { type: \"normal\", arg: fn.call(obj, arg) };\n    } catch (err) {\n      return { type: \"throw\", arg: err };\n    }\n  }\n\n  var GenStateSuspendedStart = \"suspendedStart\";\n  var GenStateSuspendedYield = \"suspendedYield\";\n  var GenStateExecuting = \"executing\";\n  var GenStateCompleted = \"completed\";\n\n  // Returning this object from the innerFn has the same effect as\n  // breaking out of the dispatch switch statement.\n  var ContinueSentinel = {};\n\n  // Dummy constructor functions that we use as the .constructor and\n  // .constructor.prototype properties for functions that return Generator\n  // objects. For full spec compliance, you may wish to configure your\n  // minifier not to mangle the names of these two functions.\n  function Generator() {}\n  function GeneratorFunction() {}\n  function GeneratorFunctionPrototype() {}\n\n  // This is a polyfill for %IteratorPrototype% for environments that\n  // don't natively support it.\n  var IteratorPrototype = {};\n  IteratorPrototype[iteratorSymbol] = function () {\n    return this;\n  };\n\n  var getProto = Object.getPrototypeOf;\n  var NativeIteratorPrototype = getProto && getProto(getProto(values([])));\n  if (NativeIteratorPrototype &&\n      NativeIteratorPrototype !== Op &&\n      hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {\n    // This environment has a native %IteratorPrototype%; use it instead\n    // of the polyfill.\n    IteratorPrototype = NativeIteratorPrototype;\n  }\n\n  var Gp = GeneratorFunctionPrototype.prototype =\n    Generator.prototype = Object.create(IteratorPrototype);\n  GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;\n  GeneratorFunctionPrototype.constructor = GeneratorFunction;\n  GeneratorFunction.displayName = define(\n    GeneratorFunctionPrototype,\n    toStringTagSymbol,\n    \"GeneratorFunction\"\n  );\n\n  // Helper for defining the .next, .throw, and .return methods of the\n  // Iterator interface in terms of a single ._invoke method.\n  function defineIteratorMethods(prototype) {\n    [\"next\", \"throw\", \"return\"].forEach(function(method) {\n      define(prototype, method, function(arg) {\n        return this._invoke(method, arg);\n      });\n    });\n  }\n\n  exports.isGeneratorFunction = function(genFun) {\n    var ctor = typeof genFun === \"function\" && genFun.constructor;\n    return ctor\n      ? ctor === GeneratorFunction ||\n        // For the native GeneratorFunction constructor, the best we can\n        // do is to check its .name property.\n        (ctor.displayName || ctor.name) === \"GeneratorFunction\"\n      : false;\n  };\n\n  exports.mark = function(genFun) {\n    if (Object.setPrototypeOf) {\n      Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);\n    } else {\n      genFun.__proto__ = GeneratorFunctionPrototype;\n      define(genFun, toStringTagSymbol, \"GeneratorFunction\");\n    }\n    genFun.prototype = Object.create(Gp);\n    return genFun;\n  };\n\n  // Within the body of any async function, `await x` is transformed to\n  // `yield regeneratorRuntime.awrap(x)`, so that the runtime can test\n  // `hasOwn.call(value, \"__await\")` to determine if the yielded value is\n  // meant to be awaited.\n  exports.awrap = function(arg) {\n    return { __await: arg };\n  };\n\n  function AsyncIterator(generator, PromiseImpl) {\n    function invoke(method, arg, resolve, reject) {\n      var record = tryCatch(generator[method], generator, arg);\n      if (record.type === \"throw\") {\n        reject(record.arg);\n      } else {\n        var result = record.arg;\n        var value = result.value;\n        if (value &&\n            typeof value === \"object\" &&\n            hasOwn.call(value, \"__await\")) {\n          return PromiseImpl.resolve(value.__await).then(function(value) {\n            invoke(\"next\", value, resolve, reject);\n          }, function(err) {\n            invoke(\"throw\", err, resolve, reject);\n          });\n        }\n\n        return PromiseImpl.resolve(value).then(function(unwrapped) {\n          // When a yielded Promise is resolved, its final value becomes\n          // the .value of the Promise<{value,done}> result for the\n          // current iteration.\n          result.value = unwrapped;\n          resolve(result);\n        }, function(error) {\n          // If a rejected Promise was yielded, throw the rejection back\n          // into the async generator function so it can be handled there.\n          return invoke(\"throw\", error, resolve, reject);\n        });\n      }\n    }\n\n    var previousPromise;\n\n    function enqueue(method, arg) {\n      function callInvokeWithMethodAndArg() {\n        return new PromiseImpl(function(resolve, reject) {\n          invoke(method, arg, resolve, reject);\n        });\n      }\n\n      return previousPromise =\n        // If enqueue has been called before, then we want to wait until\n        // all previous Promises have been resolved before calling invoke,\n        // so that results are always delivered in the correct order. If\n        // enqueue has not been called before, then it is important to\n        // call invoke immediately, without waiting on a callback to fire,\n        // so that the async generator function has the opportunity to do\n        // any necessary setup in a predictable way. This predictability\n        // is why the Promise constructor synchronously invokes its\n        // executor callback, and why async functions synchronously\n        // execute code before the first await. Since we implement simple\n        // async functions in terms of async generators, it is especially\n        // important to get this right, even though it requires care.\n        previousPromise ? previousPromise.then(\n          callInvokeWithMethodAndArg,\n          // Avoid propagating failures to Promises returned by later\n          // invocations of the iterator.\n          callInvokeWithMethodAndArg\n        ) : callInvokeWithMethodAndArg();\n    }\n\n    // Define the unified helper method that is used to implement .next,\n    // .throw, and .return (see defineIteratorMethods).\n    this._invoke = enqueue;\n  }\n\n  defineIteratorMethods(AsyncIterator.prototype);\n  AsyncIterator.prototype[asyncIteratorSymbol] = function () {\n    return this;\n  };\n  exports.AsyncIterator = AsyncIterator;\n\n  // Note that simple async functions are implemented on top of\n  // AsyncIterator objects; they just return a Promise for the value of\n  // the final result produced by the iterator.\n  exports.async = function(innerFn, outerFn, self, tryLocsList, PromiseImpl) {\n    if (PromiseImpl === void 0) PromiseImpl = Promise;\n\n    var iter = new AsyncIterator(\n      wrap(innerFn, outerFn, self, tryLocsList),\n      PromiseImpl\n    );\n\n    return exports.isGeneratorFunction(outerFn)\n      ? iter // If outerFn is a generator, return the full iterator.\n      : iter.next().then(function(result) {\n          return result.done ? result.value : iter.next();\n        });\n  };\n\n  function makeInvokeMethod(innerFn, self, context) {\n    var state = GenStateSuspendedStart;\n\n    return function invoke(method, arg) {\n      if (state === GenStateExecuting) {\n        throw new Error(\"Generator is already running\");\n      }\n\n      if (state === GenStateCompleted) {\n        if (method === \"throw\") {\n          throw arg;\n        }\n\n        // Be forgiving, per 25.3.3.3.3 of the spec:\n        // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume\n        return doneResult();\n      }\n\n      context.method = method;\n      context.arg = arg;\n\n      while (true) {\n        var delegate = context.delegate;\n        if (delegate) {\n          var delegateResult = maybeInvokeDelegate(delegate, context);\n          if (delegateResult) {\n            if (delegateResult === ContinueSentinel) continue;\n            return delegateResult;\n          }\n        }\n\n        if (context.method === \"next\") {\n          // Setting context._sent for legacy support of Babel's\n          // function.sent implementation.\n          context.sent = context._sent = context.arg;\n\n        } else if (context.method === \"throw\") {\n          if (state === GenStateSuspendedStart) {\n            state = GenStateCompleted;\n            throw context.arg;\n          }\n\n          context.dispatchException(context.arg);\n\n        } else if (context.method === \"return\") {\n          context.abrupt(\"return\", context.arg);\n        }\n\n        state = GenStateExecuting;\n\n        var record = tryCatch(innerFn, self, context);\n        if (record.type === \"normal\") {\n          // If an exception is thrown from innerFn, we leave state ===\n          // GenStateExecuting and loop back for another invocation.\n          state = context.done\n            ? GenStateCompleted\n            : GenStateSuspendedYield;\n\n          if (record.arg === ContinueSentinel) {\n            continue;\n          }\n\n          return {\n            value: record.arg,\n            done: context.done\n          };\n\n        } else if (record.type === \"throw\") {\n          state = GenStateCompleted;\n          // Dispatch the exception by looping back around to the\n          // context.dispatchException(context.arg) call above.\n          context.method = \"throw\";\n          context.arg = record.arg;\n        }\n      }\n    };\n  }\n\n  // Call delegate.iterator[context.method](context.arg) and handle the\n  // result, either by returning a { value, done } result from the\n  // delegate iterator, or by modifying context.method and context.arg,\n  // setting context.delegate to null, and returning the ContinueSentinel.\n  function maybeInvokeDelegate(delegate, context) {\n    var method = delegate.iterator[context.method];\n    if (method === undefined) {\n      // A .throw or .return when the delegate iterator has no .throw\n      // method always terminates the yield* loop.\n      context.delegate = null;\n\n      if (context.method === \"throw\") {\n        // Note: [\"return\"] must be used for ES3 parsing compatibility.\n        if (delegate.iterator[\"return\"]) {\n          // If the delegate iterator has a return method, give it a\n          // chance to clean up.\n          context.method = \"return\";\n          context.arg = undefined;\n          maybeInvokeDelegate(delegate, context);\n\n          if (context.method === \"throw\") {\n            // If maybeInvokeDelegate(context) changed context.method from\n            // \"return\" to \"throw\", let that override the TypeError below.\n            return ContinueSentinel;\n          }\n        }\n\n        context.method = \"throw\";\n        context.arg = new TypeError(\n          \"The iterator does not provide a 'throw' method\");\n      }\n\n      return ContinueSentinel;\n    }\n\n    var record = tryCatch(method, delegate.iterator, context.arg);\n\n    if (record.type === \"throw\") {\n      context.method = \"throw\";\n      context.arg = record.arg;\n      context.delegate = null;\n      return ContinueSentinel;\n    }\n\n    var info = record.arg;\n\n    if (! info) {\n      context.method = \"throw\";\n      context.arg = new TypeError(\"iterator result is not an object\");\n      context.delegate = null;\n      return ContinueSentinel;\n    }\n\n    if (info.done) {\n      // Assign the result of the finished delegate to the temporary\n      // variable specified by delegate.resultName (see delegateYield).\n      context[delegate.resultName] = info.value;\n\n      // Resume execution at the desired location (see delegateYield).\n      context.next = delegate.nextLoc;\n\n      // If context.method was \"throw\" but the delegate handled the\n      // exception, let the outer generator proceed normally. If\n      // context.method was \"next\", forget context.arg since it has been\n      // \"consumed\" by the delegate iterator. If context.method was\n      // \"return\", allow the original .return call to continue in the\n      // outer generator.\n      if (context.method !== \"return\") {\n        context.method = \"next\";\n        context.arg = undefined;\n      }\n\n    } else {\n      // Re-yield the result returned by the delegate method.\n      return info;\n    }\n\n    // The delegate iterator is finished, so forget it and continue with\n    // the outer generator.\n    context.delegate = null;\n    return ContinueSentinel;\n  }\n\n  // Define Generator.prototype.{next,throw,return} in terms of the\n  // unified ._invoke helper method.\n  defineIteratorMethods(Gp);\n\n  define(Gp, toStringTagSymbol, \"Generator\");\n\n  // A Generator should always return itself as the iterator object when the\n  // @@iterator function is called on it. Some browsers' implementations of the\n  // iterator prototype chain incorrectly implement this, causing the Generator\n  // object to not be returned from this call. This ensures that doesn't happen.\n  // See https://github.com/facebook/regenerator/issues/274 for more details.\n  Gp[iteratorSymbol] = function() {\n    return this;\n  };\n\n  Gp.toString = function() {\n    return \"[object Generator]\";\n  };\n\n  function pushTryEntry(locs) {\n    var entry = { tryLoc: locs[0] };\n\n    if (1 in locs) {\n      entry.catchLoc = locs[1];\n    }\n\n    if (2 in locs) {\n      entry.finallyLoc = locs[2];\n      entry.afterLoc = locs[3];\n    }\n\n    this.tryEntries.push(entry);\n  }\n\n  function resetTryEntry(entry) {\n    var record = entry.completion || {};\n    record.type = \"normal\";\n    delete record.arg;\n    entry.completion = record;\n  }\n\n  function Context(tryLocsList) {\n    // The root entry object (effectively a try statement without a catch\n    // or a finally block) gives us a place to store values thrown from\n    // locations where there is no enclosing try statement.\n    this.tryEntries = [{ tryLoc: \"root\" }];\n    tryLocsList.forEach(pushTryEntry, this);\n    this.reset(true);\n  }\n\n  exports.keys = function(object) {\n    var keys = [];\n    for (var key in object) {\n      keys.push(key);\n    }\n    keys.reverse();\n\n    // Rather than returning an object with a next method, we keep\n    // things simple and return the next function itself.\n    return function next() {\n      while (keys.length) {\n        var key = keys.pop();\n        if (key in object) {\n          next.value = key;\n          next.done = false;\n          return next;\n        }\n      }\n\n      // To avoid creating an additional object, we just hang the .value\n      // and .done properties off the next function object itself. This\n      // also ensures that the minifier will not anonymize the function.\n      next.done = true;\n      return next;\n    };\n  };\n\n  function values(iterable) {\n    if (iterable) {\n      var iteratorMethod = iterable[iteratorSymbol];\n      if (iteratorMethod) {\n        return iteratorMethod.call(iterable);\n      }\n\n      if (typeof iterable.next === \"function\") {\n        return iterable;\n      }\n\n      if (!isNaN(iterable.length)) {\n        var i = -1, next = function next() {\n          while (++i < iterable.length) {\n            if (hasOwn.call(iterable, i)) {\n              next.value = iterable[i];\n              next.done = false;\n              return next;\n            }\n          }\n\n          next.value = undefined;\n          next.done = true;\n\n          return next;\n        };\n\n        return next.next = next;\n      }\n    }\n\n    // Return an iterator with no values.\n    return { next: doneResult };\n  }\n  exports.values = values;\n\n  function doneResult() {\n    return { value: undefined, done: true };\n  }\n\n  Context.prototype = {\n    constructor: Context,\n\n    reset: function(skipTempReset) {\n      this.prev = 0;\n      this.next = 0;\n      // Resetting context._sent for legacy support of Babel's\n      // function.sent implementation.\n      this.sent = this._sent = undefined;\n      this.done = false;\n      this.delegate = null;\n\n      this.method = \"next\";\n      this.arg = undefined;\n\n      this.tryEntries.forEach(resetTryEntry);\n\n      if (!skipTempReset) {\n        for (var name in this) {\n          // Not sure about the optimal order of these conditions:\n          if (name.charAt(0) === \"t\" &&\n              hasOwn.call(this, name) &&\n              !isNaN(+name.slice(1))) {\n            this[name] = undefined;\n          }\n        }\n      }\n    },\n\n    stop: function() {\n      this.done = true;\n\n      var rootEntry = this.tryEntries[0];\n      var rootRecord = rootEntry.completion;\n      if (rootRecord.type === \"throw\") {\n        throw rootRecord.arg;\n      }\n\n      return this.rval;\n    },\n\n    dispatchException: function(exception) {\n      if (this.done) {\n        throw exception;\n      }\n\n      var context = this;\n      function handle(loc, caught) {\n        record.type = \"throw\";\n        record.arg = exception;\n        context.next = loc;\n\n        if (caught) {\n          // If the dispatched exception was caught by a catch block,\n          // then let that catch block handle the exception normally.\n          context.method = \"next\";\n          context.arg = undefined;\n        }\n\n        return !! caught;\n      }\n\n      for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n        var entry = this.tryEntries[i];\n        var record = entry.completion;\n\n        if (entry.tryLoc === \"root\") {\n          // Exception thrown outside of any try block that could handle\n          // it, so set the completion value of the entire function to\n          // throw the exception.\n          return handle(\"end\");\n        }\n\n        if (entry.tryLoc <= this.prev) {\n          var hasCatch = hasOwn.call(entry, \"catchLoc\");\n          var hasFinally = hasOwn.call(entry, \"finallyLoc\");\n\n          if (hasCatch && hasFinally) {\n            if (this.prev < entry.catchLoc) {\n              return handle(entry.catchLoc, true);\n            } else if (this.prev < entry.finallyLoc) {\n              return handle(entry.finallyLoc);\n            }\n\n          } else if (hasCatch) {\n            if (this.prev < entry.catchLoc) {\n              return handle(entry.catchLoc, true);\n            }\n\n          } else if (hasFinally) {\n            if (this.prev < entry.finallyLoc) {\n              return handle(entry.finallyLoc);\n            }\n\n          } else {\n            throw new Error(\"try statement without catch or finally\");\n          }\n        }\n      }\n    },\n\n    abrupt: function(type, arg) {\n      for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n        var entry = this.tryEntries[i];\n        if (entry.tryLoc <= this.prev &&\n            hasOwn.call(entry, \"finallyLoc\") &&\n            this.prev < entry.finallyLoc) {\n          var finallyEntry = entry;\n          break;\n        }\n      }\n\n      if (finallyEntry &&\n          (type === \"break\" ||\n           type === \"continue\") &&\n          finallyEntry.tryLoc <= arg &&\n          arg <= finallyEntry.finallyLoc) {\n        // Ignore the finally entry if control is not jumping to a\n        // location outside the try/catch block.\n        finallyEntry = null;\n      }\n\n      var record = finallyEntry ? finallyEntry.completion : {};\n      record.type = type;\n      record.arg = arg;\n\n      if (finallyEntry) {\n        this.method = \"next\";\n        this.next = finallyEntry.finallyLoc;\n        return ContinueSentinel;\n      }\n\n      return this.complete(record);\n    },\n\n    complete: function(record, afterLoc) {\n      if (record.type === \"throw\") {\n        throw record.arg;\n      }\n\n      if (record.type === \"break\" ||\n          record.type === \"continue\") {\n        this.next = record.arg;\n      } else if (record.type === \"return\") {\n        this.rval = this.arg = record.arg;\n        this.method = \"return\";\n        this.next = \"end\";\n      } else if (record.type === \"normal\" && afterLoc) {\n        this.next = afterLoc;\n      }\n\n      return ContinueSentinel;\n    },\n\n    finish: function(finallyLoc) {\n      for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n        var entry = this.tryEntries[i];\n        if (entry.finallyLoc === finallyLoc) {\n          this.complete(entry.completion, entry.afterLoc);\n          resetTryEntry(entry);\n          return ContinueSentinel;\n        }\n      }\n    },\n\n    \"catch\": function(tryLoc) {\n      for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n        var entry = this.tryEntries[i];\n        if (entry.tryLoc === tryLoc) {\n          var record = entry.completion;\n          if (record.type === \"throw\") {\n            var thrown = record.arg;\n            resetTryEntry(entry);\n          }\n          return thrown;\n        }\n      }\n\n      // The context.catch method must only be called with a location\n      // argument that corresponds to a known catch block.\n      throw new Error(\"illegal catch attempt\");\n    },\n\n    delegateYield: function(iterable, resultName, nextLoc) {\n      this.delegate = {\n        iterator: values(iterable),\n        resultName: resultName,\n        nextLoc: nextLoc\n      };\n\n      if (this.method === \"next\") {\n        // Deliberately forget the last sent value so that we don't\n        // accidentally pass it on to the delegate.\n        this.arg = undefined;\n      }\n\n      return ContinueSentinel;\n    }\n  };\n\n  // Regardless of whether this script is executing as a CommonJS module\n  // or not, return the runtime object so that we can declare the variable\n  // regeneratorRuntime in the outer scope, which allows this module to be\n  // injected easily by `bin/regenerator --include-runtime script.js`.\n  return exports;\n\n}(\n  // If this script is executing as a CommonJS module, use module.exports\n  // as the regeneratorRuntime namespace. Otherwise create a new empty\n  // object. Either way, the resulting object will be used to initialize\n  // the regeneratorRuntime variable at the top of this file.\n  typeof module === \"object\" ? module.exports : {}\n));\n\ntry {\n  regeneratorRuntime = runtime;\n} catch (accidentalStrictMode) {\n  // This module should not be running in strict mode, so the above\n  // assignment should always work unless something is misconfigured. Just\n  // in case runtime.js accidentally runs in strict mode, we can escape\n  // strict mode using a global Function call. This could conceivably fail\n  // if a Content Security Policy forbids using Function, but in that case\n  // the proper solution is to fix the accidental strict mode problem. If\n  // you've misconfigured your bundler to force strict mode and applied a\n  // CSP to forbid Function, and you're not willing to fix either of those\n  // problems, please detail your unique predicament in a GitHub issue.\n  Function(\"r\", \"regeneratorRuntime = r\")(runtime);\n}\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\nvar ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');\n\nfunction emptyFunction() {}\nfunction emptyFunctionWithReset() {}\nemptyFunctionWithReset.resetWarningCache = emptyFunction;\n\nmodule.exports = function() {\n  function shim(props, propName, componentName, location, propFullName, secret) {\n    if (secret === ReactPropTypesSecret) {\n      // It is still safe when called from React.\n      return;\n    }\n    var err = new Error(\n      'Calling PropTypes validators directly is not supported by the `prop-types` package. ' +\n      'Use PropTypes.checkPropTypes() to call them. ' +\n      'Read more at http://fb.me/use-check-prop-types'\n    );\n    err.name = 'Invariant Violation';\n    throw err;\n  };\n  shim.isRequired = shim;\n  function getShim() {\n    return shim;\n  };\n  // Important!\n  // Keep this list in sync with production version in `./factoryWithTypeCheckers.js`.\n  var ReactPropTypes = {\n    array: shim,\n    bool: shim,\n    func: shim,\n    number: shim,\n    object: shim,\n    string: shim,\n    symbol: shim,\n\n    any: shim,\n    arrayOf: getShim,\n    element: shim,\n    elementType: shim,\n    instanceOf: getShim,\n    node: shim,\n    objectOf: getShim,\n    oneOf: getShim,\n    oneOfType: getShim,\n    shape: getShim,\n    exact: getShim,\n\n    checkPropTypes: emptyFunctionWithReset,\n    resetWarningCache: emptyFunction\n  };\n\n  ReactPropTypes.PropTypes = ReactPropTypes;\n\n  return ReactPropTypes;\n};\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\nvar ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';\n\nmodule.exports = ReactPropTypesSecret;\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\nvar emptyFunction = require('fbjs/lib/emptyFunction');\nvar invariant = require('fbjs/lib/invariant');\nvar ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');\n\nmodule.exports = function() {\n  function shim(props, propName, componentName, location, propFullName, secret) {\n    if (secret === ReactPropTypesSecret) {\n      // It is still safe when called from React.\n      return;\n    }\n    invariant(\n      false,\n      'Calling PropTypes validators directly is not supported by the `prop-types` package. ' +\n      'Use PropTypes.checkPropTypes() to call them. ' +\n      'Read more at http://fb.me/use-check-prop-types'\n    );\n  };\n  shim.isRequired = shim;\n  function getShim() {\n    return shim;\n  };\n  // Important!\n  // Keep this list in sync with production version in `./factoryWithTypeCheckers.js`.\n  var ReactPropTypes = {\n    array: shim,\n    bool: shim,\n    func: shim,\n    number: shim,\n    object: shim,\n    string: shim,\n    symbol: shim,\n\n    any: shim,\n    arrayOf: getShim,\n    element: shim,\n    instanceOf: getShim,\n    node: shim,\n    objectOf: getShim,\n    oneOf: getShim,\n    oneOfType: getShim,\n    shape: getShim,\n    exact: getShim\n  };\n\n  ReactPropTypes.checkPropTypes = emptyFunction;\n  ReactPropTypes.PropTypes = ReactPropTypes;\n\n  return ReactPropTypes;\n};\n","\"use strict\";\n\n/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n *\n * \n */\n\nfunction makeEmptyFunction(arg) {\n  return function () {\n    return arg;\n  };\n}\n\n/**\n * This function accepts and discards inputs; it has no side effects. This is\n * primarily useful idiomatically for overridable function endpoints which\n * always need to be callable, since JS lacks a null-call idiom ala Cocoa.\n */\nvar emptyFunction = function emptyFunction() {};\n\nemptyFunction.thatReturns = makeEmptyFunction;\nemptyFunction.thatReturnsFalse = makeEmptyFunction(false);\nemptyFunction.thatReturnsTrue = makeEmptyFunction(true);\nemptyFunction.thatReturnsNull = makeEmptyFunction(null);\nemptyFunction.thatReturnsThis = function () {\n  return this;\n};\nemptyFunction.thatReturnsArgument = function (arg) {\n  return arg;\n};\n\nmodule.exports = emptyFunction;","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n *\n */\n\n'use strict';\n\n/**\n * Use invariant() to assert state which your program assumes to be true.\n *\n * Provide sprintf-style format (only %s is supported) and arguments\n * to provide information about what broke and what you were\n * expecting.\n *\n * The invariant message will be stripped in production, but the invariant\n * will remain to ensure logic does not differ in production.\n */\n\nvar validateFormat = function validateFormat(format) {};\n\nif (process.env.NODE_ENV !== 'production') {\n  validateFormat = function validateFormat(format) {\n    if (format === undefined) {\n      throw new Error('invariant requires an error message argument');\n    }\n  };\n}\n\nfunction invariant(condition, format, a, b, c, d, e, f) {\n  validateFormat(format);\n\n  if (!condition) {\n    var error;\n    if (format === undefined) {\n      error = new Error('Minified exception occurred; use the non-minified dev environment ' + 'for the full error message and additional helpful warnings.');\n    } else {\n      var args = [a, b, c, d, e, f];\n      var argIndex = 0;\n      error = new Error(format.replace(/%s/g, function () {\n        return args[argIndex++];\n      }));\n      error.name = 'Invariant Violation';\n    }\n\n    error.framesToPop = 1; // we don't care about invariant's own frame\n    throw error;\n  }\n}\n\nmodule.exports = invariant;","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\nvar ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';\n\nmodule.exports = ReactPropTypesSecret;\n","/** @license React v17.0.2\n * react-jsx-runtime.production.min.js\n *\n * Copyright (c) Facebook, Inc. and its affiliates.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n'use strict';require(\"object-assign\");var f=require(\"react\"),g=60103;exports.Fragment=60107;if(\"function\"===typeof Symbol&&Symbol.for){var h=Symbol.for;g=h(\"react.element\");exports.Fragment=h(\"react.fragment\")}var m=f.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.ReactCurrentOwner,n=Object.prototype.hasOwnProperty,p={key:!0,ref:!0,__self:!0,__source:!0};\nfunction q(c,a,k){var b,d={},e=null,l=null;void 0!==k&&(e=\"\"+k);void 0!==a.key&&(e=\"\"+a.key);void 0!==a.ref&&(l=a.ref);for(b in a)n.call(a,b)&&!p.hasOwnProperty(b)&&(d[b]=a[b]);if(c&&c.defaultProps)for(b in a=c.defaultProps,a)void 0===d[b]&&(d[b]=a[b]);return{$$typeof:g,type:c,key:e,ref:l,props:d,_owner:m.current}}exports.jsx=q;exports.jsxs=q;\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\nif (process.env.NODE_ENV !== 'production') {\n  var ReactIs = require('react-is');\n\n  // By explicitly using `prop-types` you are opting into new development behavior.\n  // http://fb.me/prop-types-in-prod\n  var throwOnDirectAccess = true;\n  module.exports = require('./factoryWithTypeCheckers')(ReactIs.isElement, throwOnDirectAccess);\n} else {\n  // By explicitly using `prop-types` you are opting into new production behavior.\n  // http://fb.me/prop-types-in-prod\n  module.exports = require('./factoryWithThrowingShims')();\n}\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\nvar ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');\n\nfunction emptyFunction() {}\nfunction emptyFunctionWithReset() {}\nemptyFunctionWithReset.resetWarningCache = emptyFunction;\n\nmodule.exports = function() {\n  function shim(props, propName, componentName, location, propFullName, secret) {\n    if (secret === ReactPropTypesSecret) {\n      // It is still safe when called from React.\n      return;\n    }\n    var err = new Error(\n      'Calling PropTypes validators directly is not supported by the `prop-types` package. ' +\n      'Use PropTypes.checkPropTypes() to call them. ' +\n      'Read more at http://fb.me/use-check-prop-types'\n    );\n    err.name = 'Invariant Violation';\n    throw err;\n  };\n  shim.isRequired = shim;\n  function getShim() {\n    return shim;\n  };\n  // Important!\n  // Keep this list in sync with production version in `./factoryWithTypeCheckers.js`.\n  var ReactPropTypes = {\n    array: shim,\n    bool: shim,\n    func: shim,\n    number: shim,\n    object: shim,\n    string: shim,\n    symbol: shim,\n\n    any: shim,\n    arrayOf: getShim,\n    element: shim,\n    elementType: shim,\n    instanceOf: getShim,\n    node: shim,\n    objectOf: getShim,\n    oneOf: getShim,\n    oneOfType: getShim,\n    shape: getShim,\n    exact: getShim,\n\n    checkPropTypes: emptyFunctionWithReset,\n    resetWarningCache: emptyFunction\n  };\n\n  ReactPropTypes.PropTypes = ReactPropTypes;\n\n  return ReactPropTypes;\n};\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\nvar ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';\n\nmodule.exports = ReactPropTypesSecret;\n","module.exports = Array.isArray || function (arr) {\n  return Object.prototype.toString.call(arr) == '[object Array]';\n};\n","'use strict';\n\nif (process.env.NODE_ENV === 'production') {\n  module.exports = require('./cjs/react-is.production.min.js');\n} else {\n  module.exports = require('./cjs/react-is.development.js');\n}\n","/** @license React v16.13.1\n * react-is.production.min.js\n *\n * Copyright (c) Facebook, Inc. and its affiliates.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';var b=\"function\"===typeof Symbol&&Symbol.for,c=b?Symbol.for(\"react.element\"):60103,d=b?Symbol.for(\"react.portal\"):60106,e=b?Symbol.for(\"react.fragment\"):60107,f=b?Symbol.for(\"react.strict_mode\"):60108,g=b?Symbol.for(\"react.profiler\"):60114,h=b?Symbol.for(\"react.provider\"):60109,k=b?Symbol.for(\"react.context\"):60110,l=b?Symbol.for(\"react.async_mode\"):60111,m=b?Symbol.for(\"react.concurrent_mode\"):60111,n=b?Symbol.for(\"react.forward_ref\"):60112,p=b?Symbol.for(\"react.suspense\"):60113,q=b?\nSymbol.for(\"react.suspense_list\"):60120,r=b?Symbol.for(\"react.memo\"):60115,t=b?Symbol.for(\"react.lazy\"):60116,v=b?Symbol.for(\"react.block\"):60121,w=b?Symbol.for(\"react.fundamental\"):60117,x=b?Symbol.for(\"react.responder\"):60118,y=b?Symbol.for(\"react.scope\"):60119;\nfunction z(a){if(\"object\"===typeof a&&null!==a){var u=a.$$typeof;switch(u){case c:switch(a=a.type,a){case l:case m:case e:case g:case f:case p:return a;default:switch(a=a&&a.$$typeof,a){case k:case n:case t:case r:case h:return 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Symbol&&Symbol.for,c=b?Symbol.for(\"react.element\"):60103,d=b?Symbol.for(\"react.portal\"):60106,e=b?Symbol.for(\"react.fragment\"):60107,f=b?Symbol.for(\"react.strict_mode\"):60108,g=b?Symbol.for(\"react.profiler\"):60114,h=b?Symbol.for(\"react.provider\"):60109,k=b?Symbol.for(\"react.context\"):60110,l=b?Symbol.for(\"react.async_mode\"):60111,m=b?Symbol.for(\"react.concurrent_mode\"):60111,n=b?Symbol.for(\"react.forward_ref\"):60112,p=b?Symbol.for(\"react.suspense\"):60113,q=b?\nSymbol.for(\"react.suspense_list\"):60120,r=b?Symbol.for(\"react.memo\"):60115,t=b?Symbol.for(\"react.lazy\"):60116,v=b?Symbol.for(\"react.block\"):60121,w=b?Symbol.for(\"react.fundamental\"):60117,x=b?Symbol.for(\"react.responder\"):60118,y=b?Symbol.for(\"react.scope\"):60119;\nfunction z(a){if(\"object\"===typeof a&&null!==a){var u=a.$$typeof;switch(u){case c:switch(a=a.type,a){case l:case m:case e:case g:case f:case p:return a;default:switch(a=a&&a.$$typeof,a){case k:case n:case t:case r:case h:return 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z(a)===p};\nexports.isValidElementType=function(a){return\"string\"===typeof a||\"function\"===typeof a||a===e||a===m||a===g||a===f||a===p||a===q||\"object\"===typeof a&&null!==a&&(a.$$typeof===t||a.$$typeof===r||a.$$typeof===h||a.$$typeof===k||a.$$typeof===n||a.$$typeof===w||a.$$typeof===x||a.$$typeof===y||a.$$typeof===v)};exports.typeOf=z;\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\nif (process.env.NODE_ENV !== 'production') {\n  var ReactIs = require('react-is');\n\n  // By explicitly using `prop-types` you are opting into new development behavior.\n  // http://fb.me/prop-types-in-prod\n  var throwOnDirectAccess = true;\n  module.exports = require('./factoryWithTypeCheckers')(ReactIs.isElement, throwOnDirectAccess);\n} else {\n  // By explicitly using `prop-types` you are opting into new production behavior.\n  // 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' +\n      'Use PropTypes.checkPropTypes() to call them. ' +\n      'Read more at http://fb.me/use-check-prop-types'\n    );\n    err.name = 'Invariant Violation';\n    throw err;\n  };\n  shim.isRequired = shim;\n  function getShim() {\n    return shim;\n  };\n  // Important!\n  // Keep this list in sync with production version in `./factoryWithTypeCheckers.js`.\n  var ReactPropTypes = {\n    array: shim,\n    bool: shim,\n    func: shim,\n    number: shim,\n    object: shim,\n    string: shim,\n    symbol: shim,\n\n    any: shim,\n    arrayOf: getShim,\n    element: shim,\n    elementType: shim,\n    instanceOf: getShim,\n    node: shim,\n    objectOf: getShim,\n    oneOf: getShim,\n    oneOfType: getShim,\n    shape: getShim,\n    exact: getShim,\n\n    checkPropTypes: emptyFunctionWithReset,\n    resetWarningCache: emptyFunction\n  };\n\n  ReactPropTypes.PropTypes = ReactPropTypes;\n\n  return ReactPropTypes;\n};\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\nvar ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';\n\nmodule.exports = ReactPropTypesSecret;\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\nvar ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');\n\nfunction emptyFunction() {}\nfunction emptyFunctionWithReset() {}\nemptyFunctionWithReset.resetWarningCache = emptyFunction;\n\nmodule.exports = function() {\n  function shim(props, propName, componentName, location, propFullName, secret) {\n    if (secret === ReactPropTypesSecret) {\n      // It is still safe when called from React.\n      return;\n    }\n    var err = new Error(\n      'Calling PropTypes validators directly is not supported by the `prop-types` package. ' +\n      'Use PropTypes.checkPropTypes() to call them. ' +\n      'Read more at http://fb.me/use-check-prop-types'\n    );\n    err.name = 'Invariant Violation';\n    throw err;\n  };\n  shim.isRequired = shim;\n  function getShim() {\n    return shim;\n  };\n  // Important!\n  // Keep this list in sync with production version in `./factoryWithTypeCheckers.js`.\n  var ReactPropTypes = {\n    array: shim,\n    bool: shim,\n    func: shim,\n    number: shim,\n    object: shim,\n    string: shim,\n    symbol: shim,\n\n    any: shim,\n    arrayOf: getShim,\n    element: shim,\n    elementType: shim,\n    instanceOf: getShim,\n    node: shim,\n    objectOf: getShim,\n    oneOf: getShim,\n    oneOfType: getShim,\n    shape: getShim,\n    exact: getShim,\n\n    checkPropTypes: emptyFunctionWithReset,\n    resetWarningCache: emptyFunction\n  };\n\n  ReactPropTypes.PropTypes = ReactPropTypes;\n\n  return ReactPropTypes;\n};\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\nvar ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';\n\nmodule.exports = ReactPropTypesSecret;\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\nvar ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');\n\nfunction emptyFunction() {}\nfunction emptyFunctionWithReset() {}\nemptyFunctionWithReset.resetWarningCache = emptyFunction;\n\nmodule.exports = function() {\n  function shim(props, propName, componentName, location, propFullName, secret) {\n    if (secret === ReactPropTypesSecret) {\n      // It is still safe when called from React.\n      return;\n    }\n    var err = new Error(\n      'Calling PropTypes validators directly is not supported by the `prop-types` package. ' +\n      'Use PropTypes.checkPropTypes() to call them. ' +\n      'Read more at http://fb.me/use-check-prop-types'\n    );\n    err.name = 'Invariant Violation';\n    throw err;\n  };\n  shim.isRequired = shim;\n  function getShim() {\n    return shim;\n  };\n  // Important!\n  // Keep this list in sync with production version in `./factoryWithTypeCheckers.js`.\n  var ReactPropTypes = {\n    array: shim,\n    bool: shim,\n    func: shim,\n    number: shim,\n    object: shim,\n    string: shim,\n    symbol: shim,\n\n    any: shim,\n    arrayOf: getShim,\n    element: shim,\n    elementType: shim,\n    instanceOf: getShim,\n    node: shim,\n    objectOf: getShim,\n    oneOf: getShim,\n    oneOfType: getShim,\n    shape: getShim,\n    exact: getShim,\n\n    checkPropTypes: emptyFunctionWithReset,\n    resetWarningCache: emptyFunction\n  };\n\n  ReactPropTypes.PropTypes = ReactPropTypes;\n\n  return ReactPropTypes;\n};\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\nvar ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';\n\nmodule.exports = ReactPropTypesSecret;\n","/** @license React v16.13.1\n * react-is.production.min.js\n *\n * Copyright (c) Facebook, Inc. and its affiliates.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';var b=\"function\"===typeof Symbol&&Symbol.for,c=b?Symbol.for(\"react.element\"):60103,d=b?Symbol.for(\"react.portal\"):60106,e=b?Symbol.for(\"react.fragment\"):60107,f=b?Symbol.for(\"react.strict_mode\"):60108,g=b?Symbol.for(\"react.profiler\"):60114,h=b?Symbol.for(\"react.provider\"):60109,k=b?Symbol.for(\"react.context\"):60110,l=b?Symbol.for(\"react.async_mode\"):60111,m=b?Symbol.for(\"react.concurrent_mode\"):60111,n=b?Symbol.for(\"react.forward_ref\"):60112,p=b?Symbol.for(\"react.suspense\"):60113,q=b?\nSymbol.for(\"react.suspense_list\"):60120,r=b?Symbol.for(\"react.memo\"):60115,t=b?Symbol.for(\"react.lazy\"):60116,v=b?Symbol.for(\"react.block\"):60121,w=b?Symbol.for(\"react.fundamental\"):60117,x=b?Symbol.for(\"react.responder\"):60118,y=b?Symbol.for(\"react.scope\"):60119;\nfunction z(a){if(\"object\"===typeof a&&null!==a){var u=a.$$typeof;switch(u){case c:switch(a=a.type,a){case l:case m:case e:case g:case f:case p:return a;default:switch(a=a&&a.$$typeof,a){case k:case n:case t:case r:case h:return a;default:return u}}case d:return u}}}function A(a){return z(a)===m}exports.AsyncMode=l;exports.ConcurrentMode=m;exports.ContextConsumer=k;exports.ContextProvider=h;exports.Element=c;exports.ForwardRef=n;exports.Fragment=e;exports.Lazy=t;exports.Memo=r;exports.Portal=d;\nexports.Profiler=g;exports.StrictMode=f;exports.Suspense=p;exports.isAsyncMode=function(a){return A(a)||z(a)===l};exports.isConcurrentMode=A;exports.isContextConsumer=function(a){return z(a)===k};exports.isContextProvider=function(a){return z(a)===h};exports.isElement=function(a){return\"object\"===typeof a&&null!==a&&a.$$typeof===c};exports.isForwardRef=function(a){return z(a)===n};exports.isFragment=function(a){return z(a)===e};exports.isLazy=function(a){return z(a)===t};\nexports.isMemo=function(a){return z(a)===r};exports.isPortal=function(a){return z(a)===d};exports.isProfiler=function(a){return z(a)===g};exports.isStrictMode=function(a){return z(a)===f};exports.isSuspense=function(a){return z(a)===p};\nexports.isValidElementType=function(a){return\"string\"===typeof a||\"function\"===typeof a||a===e||a===m||a===g||a===f||a===p||a===q||\"object\"===typeof a&&null!==a&&(a.$$typeof===t||a.$$typeof===r||a.$$typeof===h||a.$$typeof===k||a.$$typeof===n||a.$$typeof===w||a.$$typeof===x||a.$$typeof===y||a.$$typeof===v)};exports.typeOf=z;\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\nvar ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');\n\nfunction emptyFunction() {}\nfunction emptyFunctionWithReset() {}\nemptyFunctionWithReset.resetWarningCache = emptyFunction;\n\nmodule.exports = function() {\n  function shim(props, propName, componentName, location, propFullName, secret) {\n    if (secret === ReactPropTypesSecret) {\n      // It is still safe when called from React.\n      return;\n    }\n    var err = new Error(\n      'Calling PropTypes validators directly is not supported by the `prop-types` package. ' +\n      'Use PropTypes.checkPropTypes() to call them. ' +\n      'Read more at http://fb.me/use-check-prop-types'\n    );\n    err.name = 'Invariant Violation';\n    throw err;\n  };\n  shim.isRequired = shim;\n  function getShim() {\n    return shim;\n  };\n  // Important!\n  // Keep this list in sync with production version in `./factoryWithTypeCheckers.js`.\n  var ReactPropTypes = {\n    array: shim,\n    bool: shim,\n    func: shim,\n    number: shim,\n    object: shim,\n    string: shim,\n    symbol: shim,\n\n    any: shim,\n    arrayOf: getShim,\n    element: shim,\n    elementType: shim,\n    instanceOf: getShim,\n    node: shim,\n    objectOf: getShim,\n    oneOf: getShim,\n    oneOfType: getShim,\n    shape: getShim,\n    exact: getShim,\n\n    checkPropTypes: emptyFunctionWithReset,\n    resetWarningCache: emptyFunction\n  };\n\n  ReactPropTypes.PropTypes = ReactPropTypes;\n\n  return ReactPropTypes;\n};\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\nvar ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';\n\nmodule.exports = ReactPropTypesSecret;\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Bootstrap for the Google JS Library (Closure).\n *\n * In uncompiled mode base.js will attempt to load Closure's deps file, unless\n * the global <code>CLOSURE_NO_DEPS</code> is set to true.  This allows projects\n * to include their own deps file(s) from different locations.\n *\n * Avoid including base.js more than once. This is strictly discouraged and not\n * supported. goog.require(...) won't work properly in that case.\n *\n * @provideGoog\n */\n\n\n/**\n * @define {boolean} Overridden to true by the compiler.\n */\nvar COMPILED = false;\n\n\n/**\n * Base namespace for the Closure library.  Checks to see goog is already\n * defined in the current scope before assigning to prevent clobbering if\n * base.js is loaded more than once.\n *\n * @const\n */\nvar goog = goog || {};\n\n/**\n * Reference to the global object.\n * https://www.ecma-international.org/ecma-262/9.0/index.html#sec-global-object\n *\n * More info on this implementation here:\n * https://docs.google.com/document/d/1NAeW4Wk7I7FV0Y2tcUFvQdGMc89k2vdgSXInw8_nvCI/edit\n *\n * @const\n * @suppress {undefinedVars} self won't be referenced unless `this` is falsy.\n * @type {!Global}\n */\ngoog.global =\n    // Check `this` first for backwards compatibility.\n    // Valid unless running as an ES module or in a function wrapper called\n    //   without setting `this` properly.\n    // Note that base.js can't usefully be imported as an ES module, but it may\n    // be compiled into bundles that are loadable as ES modules.\n    this ||\n    // https://developer.mozilla.org/en-US/docs/Web/API/Window/self\n    // For in-page browser environments and workers.\n    self;\n\n\n/**\n * A hook for overriding the define values in uncompiled mode.\n *\n * In uncompiled mode, `CLOSURE_UNCOMPILED_DEFINES` may be defined before\n * loading base.js.  If a key is defined in `CLOSURE_UNCOMPILED_DEFINES`,\n * `goog.define` will use the value instead of the default value.  This\n * allows flags to be overwritten without compilation (this is normally\n * accomplished with the compiler's \"define\" flag).\n *\n * Example:\n * <pre>\n *   var CLOSURE_UNCOMPILED_DEFINES = {'goog.DEBUG': false};\n * </pre>\n *\n * @type {Object<string, (string|number|boolean)>|undefined}\n */\ngoog.global.CLOSURE_UNCOMPILED_DEFINES;\n\n\n/**\n * A hook for overriding the define values in uncompiled or compiled mode,\n * like CLOSURE_UNCOMPILED_DEFINES but effective in compiled code.  In\n * uncompiled code CLOSURE_UNCOMPILED_DEFINES takes precedence.\n *\n * Also unlike CLOSURE_UNCOMPILED_DEFINES the values must be number, boolean or\n * string literals or the compiler will emit an error.\n *\n * While any @define value may be set, only those set with goog.define will be\n * effective for uncompiled code.\n *\n * Example:\n * <pre>\n *   var CLOSURE_DEFINES = {'goog.DEBUG': false} ;\n * </pre>\n *\n * @type {Object<string, (string|number|boolean)>|undefined}\n */\ngoog.global.CLOSURE_DEFINES;\n\n\n/**\n * Builds an object structure for the provided namespace path, ensuring that\n * names that already exist are not overwritten. For example:\n * \"a.b.c\" -> a = {};a.b={};a.b.c={};\n * Used by goog.provide and goog.exportSymbol.\n * @param {string} name The name of the object that this file defines.\n * @param {*=} object The object to expose at the end of the path.\n * @param {boolean=} overwriteImplicit If object is set and a previous call\n *     implicitly constructed the namespace given by name, this parameter\n *     controls whether object should overwrite the implicitly constructed\n *     namespace or be merged into it. Defaults to false.\n * @param {?Object=} objectToExportTo The object to add the path to; if this\n *     field is not specified, its value defaults to `goog.global`.\n * @private\n */\ngoog.exportPath_ = function(name, object, overwriteImplicit, objectToExportTo) {\n  var parts = name.split('.');\n  var cur = objectToExportTo || goog.global;\n\n  // Internet Explorer exhibits strange behavior when throwing errors from\n  // methods externed in this manner.  See the testExportSymbolExceptions in\n  // base_test.html for an example.\n  if (!(parts[0] in cur) && typeof cur.execScript != 'undefined') {\n    cur.execScript('var ' + parts[0]);\n  }\n\n  for (var part; parts.length && (part = parts.shift());) {\n    if (!parts.length && object !== undefined) {\n      if (!overwriteImplicit && goog.isObject(object) &&\n          goog.isObject(cur[part])) {\n        // Merge properties on object (the input parameter) with the existing\n        // implicitly defined namespace, so as to not clobber previously\n        // defined child namespaces.\n        for (var prop in object) {\n          if (object.hasOwnProperty(prop)) {\n            cur[part][prop] = object[prop];\n          }\n        }\n      } else {\n        // Either there is no existing implicit namespace, or overwriteImplicit\n        // is set to true, so directly assign object (the input parameter) to\n        // the namespace.\n        cur[part] = object;\n      }\n    } else if (cur[part] && cur[part] !== Object.prototype[part]) {\n      cur = cur[part];\n    } else {\n      cur = cur[part] = {};\n    }\n  }\n};\n\n\n/**\n * Defines a named value. In uncompiled mode, the value is retrieved from\n * CLOSURE_DEFINES or CLOSURE_UNCOMPILED_DEFINES if the object is defined and\n * has the property specified, and otherwise used the defined defaultValue.\n * When compiled the default can be overridden using the compiler options or the\n * value set in the CLOSURE_DEFINES object. Returns the defined value so that it\n * can be used safely in modules. Note that the value type MUST be either\n * boolean, number, or string.\n *\n * @param {string} name The distinguished name to provide.\n * @param {T} defaultValue\n * @return {T} The defined value.\n * @template T\n */\ngoog.define = function(name, defaultValue) {\n  var value = defaultValue;\n  if (!COMPILED) {\n    var uncompiledDefines = goog.global.CLOSURE_UNCOMPILED_DEFINES;\n    var defines = goog.global.CLOSURE_DEFINES;\n    if (uncompiledDefines &&\n        // Anti DOM-clobbering runtime check (b/37736576).\n        /** @type {?} */ (uncompiledDefines).nodeType === undefined &&\n        Object.prototype.hasOwnProperty.call(uncompiledDefines, name)) {\n      value = uncompiledDefines[name];\n    } else if (\n        defines &&\n        // Anti DOM-clobbering runtime check (b/37736576).\n        /** @type {?} */ (defines).nodeType === undefined &&\n        Object.prototype.hasOwnProperty.call(defines, name)) {\n      value = defines[name];\n    }\n  }\n  return value;\n};\n\n\n/**\n * @define {number} Integer year indicating the set of browser features that are\n * guaranteed to be present.  This is defined to include exactly features that\n * work correctly on all \"modern\" browsers that are stable on January 1 of the\n * specified year.  For example,\n * ```js\n * if (goog.FEATURESET_YEAR >= 2019) {\n *   // use APIs known to be available on all major stable browsers Jan 1, 2019\n * } else {\n *   // polyfill for older browsers\n * }\n * ```\n * This is intended to be the primary define for removing\n * unnecessary browser compatibility code (such as ponyfills and workarounds),\n * and should inform the default value for most other defines:\n * ```js\n * const ASSUME_NATIVE_PROMISE =\n *     goog.define('ASSUME_NATIVE_PROMISE', goog.FEATURESET_YEAR >= 2016);\n * ```\n *\n * The default assumption is that IE9 is the lowest supported browser, which was\n * first available Jan 1, 2012.\n *\n * TODO(user): Reference more thorough documentation when it's available.\n */\ngoog.FEATURESET_YEAR = goog.define('goog.FEATURESET_YEAR', 2012);\n\n\n/**\n * @define {boolean} DEBUG is provided as a convenience so that debugging code\n * that should not be included in a production. It can be easily stripped\n * by specifying --define goog.DEBUG=false to the Closure Compiler aka\n * JSCompiler. For example, most toString() methods should be declared inside an\n * \"if (goog.DEBUG)\" conditional because they are generally used for debugging\n * purposes and it is difficult for the JSCompiler to statically determine\n * whether they are used.\n */\ngoog.DEBUG = goog.define('goog.DEBUG', true);\n\n\n/**\n * @define {string} LOCALE defines the locale being used for compilation. It is\n * used to select locale specific data to be compiled in js binary. BUILD rule\n * can specify this value by \"--define goog.LOCALE=<locale_name>\" as a compiler\n * option.\n *\n * Take into account that the locale code format is important. You should use\n * the canonical Unicode format with hyphen as a delimiter. Language must be\n * lowercase, Language Script - Capitalized, Region - UPPERCASE.\n * There are few examples: pt-BR, en, en-US, sr-Latin-BO, zh-Hans-CN.\n *\n * See more info about locale codes here:\n * http://www.unicode.org/reports/tr35/#Unicode_Language_and_Locale_Identifiers\n *\n * For language codes you should use values defined by ISO 693-1. See it here\n * http://www.w3.org/WAI/ER/IG/ert/iso639.htm. There is only one exception from\n * this rule: the Hebrew language. For legacy reasons the old code (iw) should\n * be used instead of the new code (he).\n *\n */\ngoog.LOCALE = goog.define('goog.LOCALE', 'en');  // default to en\n\n\n/**\n * @define {boolean} Whether this code is running on trusted sites.\n *\n * On untrusted sites, several native functions can be defined or overridden by\n * external libraries like Prototype, Datejs, and JQuery and setting this flag\n * to false forces closure to use its own implementations when possible.\n *\n * If your JavaScript can be loaded by a third party site and you are wary about\n * relying on non-standard implementations, specify\n * \"--define goog.TRUSTED_SITE=false\" to the compiler.\n */\ngoog.TRUSTED_SITE = goog.define('goog.TRUSTED_SITE', true);\n\n\n/**\n * @define {boolean} Whether code that calls {@link goog.setTestOnly} should\n *     be disallowed in the compilation unit.\n */\ngoog.DISALLOW_TEST_ONLY_CODE =\n    goog.define('goog.DISALLOW_TEST_ONLY_CODE', COMPILED && !goog.DEBUG);\n\n\n/**\n * @define {boolean} Whether to use a Chrome app CSP-compliant method for\n *     loading scripts via goog.require. @see appendScriptSrcNode_.\n */\ngoog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING =\n    goog.define('goog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING', false);\n\n\n/**\n * Defines a namespace in Closure.\n *\n * A namespace may only be defined once in a codebase. It may be defined using\n * goog.provide() or goog.module().\n *\n * The presence of one or more goog.provide() calls in a file indicates\n * that the file defines the given objects/namespaces.\n * Provided symbols must not be null or undefined.\n *\n * In addition, goog.provide() creates the object stubs for a namespace\n * (for example, goog.provide(\"goog.foo.bar\") will create the object\n * goog.foo.bar if it does not already exist).\n *\n * Build tools also scan for provide/require/module statements\n * to discern dependencies, build dependency files (see deps.js), etc.\n *\n * @see goog.require\n * @see goog.module\n * @param {string} name Namespace provided by this file in the form\n *     \"goog.package.part\".\n * deprecated Use goog.module (see b/159289405)\n */\ngoog.provide = function(name) {\n  if (goog.isInModuleLoader_()) {\n    throw new Error('goog.provide cannot be used within a module.');\n  }\n  if (!COMPILED) {\n    // Ensure that the same namespace isn't provided twice.\n    // A goog.module/goog.provide maps a goog.require to a specific file\n    if (goog.isProvided_(name)) {\n      throw new Error('Namespace \"' + name + '\" already declared.');\n    }\n  }\n\n  goog.constructNamespace_(name);\n};\n\n\n/**\n * @param {string} name Namespace provided by this file in the form\n *     \"goog.package.part\".\n * @param {?Object=} object The object to embed in the namespace.\n * @param {boolean=} overwriteImplicit If object is set and a previous call\n *     implicitly constructed the namespace given by name, this parameter\n *     controls whether opt_obj should overwrite the implicitly constructed\n *     namespace or be merged into it. Defaults to false.\n * @private\n */\ngoog.constructNamespace_ = function(name, object, overwriteImplicit) {\n  if (!COMPILED) {\n    delete goog.implicitNamespaces_[name];\n\n    var namespace = name;\n    while ((namespace = namespace.substring(0, namespace.lastIndexOf('.')))) {\n      if (goog.getObjectByName(namespace)) {\n        break;\n      }\n      goog.implicitNamespaces_[namespace] = true;\n    }\n  }\n\n  goog.exportPath_(name, object, overwriteImplicit);\n};\n\n\n/**\n * Returns CSP nonce, if set for any script tag.\n * @param {?Window=} opt_window The window context used to retrieve the nonce.\n *     Defaults to global context.\n * @return {string} CSP nonce or empty string if no nonce is present.\n */\ngoog.getScriptNonce = function(opt_window) {\n  if (opt_window && opt_window != goog.global) {\n    return goog.getScriptNonce_(opt_window.document);\n  }\n  if (goog.cspNonce_ === null) {\n    goog.cspNonce_ = goog.getScriptNonce_(goog.global.document);\n  }\n  return goog.cspNonce_;\n};\n\n\n/**\n * According to the CSP3 spec a nonce must be a valid base64 string.\n * @see https://www.w3.org/TR/CSP3/#grammardef-base64-value\n * @private @const\n */\ngoog.NONCE_PATTERN_ = /^[\\w+/_-]+[=]{0,2}$/;\n\n\n/**\n * @private {?string}\n */\ngoog.cspNonce_ = null;\n\n\n/**\n * Returns CSP nonce, if set for any script tag.\n * @param {!Document} doc\n * @return {string} CSP nonce or empty string if no nonce is present.\n * @private\n */\ngoog.getScriptNonce_ = function(doc) {\n  var script = doc.querySelector && doc.querySelector('script[nonce]');\n  if (script) {\n    // Try to get the nonce from the IDL property first, because browsers that\n    // implement additional nonce protection features (currently only Chrome) to\n    // prevent nonce stealing via CSS do not expose the nonce via attributes.\n    // See https://github.com/whatwg/html/issues/2369\n    var nonce = script['nonce'] || script.getAttribute('nonce');\n    if (nonce && goog.NONCE_PATTERN_.test(nonce)) {\n      return nonce;\n    }\n  }\n  return '';\n};\n\n\n/**\n * Module identifier validation regexp.\n * Note: This is a conservative check, it is very possible to be more lenient,\n *   the primary exclusion here is \"/\" and \"\\\" and a leading \".\", these\n *   restrictions are intended to leave the door open for using goog.require\n *   with relative file paths rather than module identifiers.\n * @private\n */\ngoog.VALID_MODULE_RE_ = /^[a-zA-Z_$][a-zA-Z0-9._$]*$/;\n\n\n/**\n * Defines a module in Closure.\n *\n * Marks that this file must be loaded as a module and claims the namespace.\n *\n * A namespace may only be defined once in a codebase. It may be defined using\n * goog.provide() or goog.module().\n *\n * goog.module() has three requirements:\n * - goog.module may not be used in the same file as goog.provide.\n * - goog.module must be the first statement in the file.\n * - only one goog.module is allowed per file.\n *\n * When a goog.module annotated file is loaded, it is enclosed in\n * a strict function closure. This means that:\n * - any variables declared in a goog.module file are private to the file\n * (not global), though the compiler is expected to inline the module.\n * - The code must obey all the rules of \"strict\" JavaScript.\n * - the file will be marked as \"use strict\"\n *\n * NOTE: unlike goog.provide, goog.module does not declare any symbols by\n * itself. If declared symbols are desired, use\n * goog.module.declareLegacyNamespace().\n *\n *\n * See the public goog.module proposal: http://goo.gl/Va1hin\n *\n * @param {string} name Namespace provided by this file in the form\n *     \"goog.package.part\", is expected but not required.\n * @return {void}\n */\ngoog.module = function(name) {\n  if (typeof name !== 'string' || !name ||\n      name.search(goog.VALID_MODULE_RE_) == -1) {\n    throw new Error('Invalid module identifier');\n  }\n  if (!goog.isInGoogModuleLoader_()) {\n    throw new Error(\n        'Module ' + name + ' has been loaded incorrectly. Note, ' +\n        'modules cannot be loaded as normal scripts. They require some kind of ' +\n        'pre-processing step. You\\'re likely trying to load a module via a ' +\n        'script tag or as a part of a concatenated bundle without rewriting the ' +\n        'module. For more info see: ' +\n        'https://github.com/google/closure-library/wiki/goog.module:-an-ES6-module-like-alternative-to-goog.provide.');\n  }\n  if (goog.moduleLoaderState_.moduleName) {\n    throw new Error('goog.module may only be called once per module.');\n  }\n\n  // Store the module name for the loader.\n  goog.moduleLoaderState_.moduleName = name;\n  if (!COMPILED) {\n    // Ensure that the same namespace isn't provided twice.\n    // A goog.module/goog.provide maps a goog.require to a specific file\n    if (goog.isProvided_(name)) {\n      throw new Error('Namespace \"' + name + '\" already declared.');\n    }\n    delete goog.implicitNamespaces_[name];\n  }\n};\n\n\n/**\n * @param {string} name The module identifier.\n * @return {?} The module exports for an already loaded module or null.\n *\n * Note: This is not an alternative to goog.require, it does not\n * indicate a hard dependency, instead it is used to indicate\n * an optional dependency or to access the exports of a module\n * that has already been loaded.\n * @suppress {missingProvide}\n */\ngoog.module.get = function(name) {\n  return goog.module.getInternal_(name);\n};\n\n\n/**\n * @param {string} name The module identifier.\n * @return {?} The module exports for an already loaded module or null.\n * @private\n */\ngoog.module.getInternal_ = function(name) {\n  if (!COMPILED) {\n    if (name in goog.loadedModules_) {\n      return goog.loadedModules_[name].exports;\n    } else if (!goog.implicitNamespaces_[name]) {\n      var ns = goog.getObjectByName(name);\n      return ns != null ? ns : null;\n    }\n  }\n  return null;\n};\n\n\n/**\n * Types of modules the debug loader can load.\n * @enum {string}\n */\ngoog.ModuleType = {\n  ES6: 'es6',\n  GOOG: 'goog'\n};\n\n\n/**\n * @private {?{\n *   moduleName: (string|undefined),\n *   declareLegacyNamespace:boolean,\n *   type: ?goog.ModuleType\n * }}\n */\ngoog.moduleLoaderState_ = null;\n\n\n/**\n * @private\n * @return {boolean} Whether a goog.module or an es6 module is currently being\n *     initialized.\n */\ngoog.isInModuleLoader_ = function() {\n  return goog.isInGoogModuleLoader_() || goog.isInEs6ModuleLoader_();\n};\n\n\n/**\n * @private\n * @return {boolean} Whether a goog.module is currently being initialized.\n */\ngoog.isInGoogModuleLoader_ = function() {\n  return !!goog.moduleLoaderState_ &&\n      goog.moduleLoaderState_.type == goog.ModuleType.GOOG;\n};\n\n\n/**\n * @private\n * @return {boolean} Whether an es6 module is currently being initialized.\n */\ngoog.isInEs6ModuleLoader_ = function() {\n  var inLoader = !!goog.moduleLoaderState_ &&\n      goog.moduleLoaderState_.type == goog.ModuleType.ES6;\n\n  if (inLoader) {\n    return true;\n  }\n\n  var jscomp = goog.global['$jscomp'];\n\n  if (jscomp) {\n    // jscomp may not have getCurrentModulePath if this is a compiled bundle\n    // that has some of the runtime, but not all of it. This can happen if\n    // optimizations are turned on so the unused runtime is removed but renaming\n    // and Closure pass are off (so $jscomp is still named $jscomp and the\n    // goog.provide/require calls still exist).\n    if (typeof jscomp.getCurrentModulePath != 'function') {\n      return false;\n    }\n\n    // Bundled ES6 module.\n    return !!jscomp.getCurrentModulePath();\n  }\n\n  return false;\n};\n\n\n/**\n * Provide the module's exports as a globally accessible object under the\n * module's declared name.  This is intended to ease migration to goog.module\n * for files that have existing usages.\n * @suppress {missingProvide}\n */\ngoog.module.declareLegacyNamespace = function() {\n  if (!COMPILED && !goog.isInGoogModuleLoader_()) {\n    throw new Error(\n        'goog.module.declareLegacyNamespace must be called from ' +\n        'within a goog.module');\n  }\n  if (!COMPILED && !goog.moduleLoaderState_.moduleName) {\n    throw new Error(\n        'goog.module must be called prior to ' +\n        'goog.module.declareLegacyNamespace.');\n  }\n  goog.moduleLoaderState_.declareLegacyNamespace = true;\n};\n\n\n/**\n * Associates an ES6 module with a Closure module ID so that is available via\n * goog.require. The associated ID  acts like a goog.module ID - it does not\n * create any global names, it is merely available via goog.require /\n * goog.module.get / goog.forwardDeclare / goog.requireType. goog.require and\n * goog.module.get will return the entire module as if it was import *'d. This\n * allows Closure files to reference ES6 modules for the sake of migration.\n *\n * @param {string} namespace\n * @suppress {missingProvide}\n */\ngoog.declareModuleId = function(namespace) {\n  if (!COMPILED) {\n    if (!goog.isInEs6ModuleLoader_()) {\n      throw new Error(\n          'goog.declareModuleId may only be called from ' +\n          'within an ES6 module');\n    }\n    if (goog.moduleLoaderState_ && goog.moduleLoaderState_.moduleName) {\n      throw new Error(\n          'goog.declareModuleId may only be called once per module.');\n    }\n    if (namespace in goog.loadedModules_) {\n      throw new Error(\n          'Module with namespace \"' + namespace + '\" already exists.');\n    }\n  }\n  if (goog.moduleLoaderState_) {\n    // Not bundled - debug loading.\n    goog.moduleLoaderState_.moduleName = namespace;\n  } else {\n    // Bundled - not debug loading, no module loader state.\n    var jscomp = goog.global['$jscomp'];\n    if (!jscomp || typeof jscomp.getCurrentModulePath != 'function') {\n      throw new Error(\n          'Module with namespace \"' + namespace +\n          '\" has been loaded incorrectly.');\n    }\n    var exports = jscomp.require(jscomp.getCurrentModulePath());\n    goog.loadedModules_[namespace] = {\n      exports: exports,\n      type: goog.ModuleType.ES6,\n      moduleId: namespace\n    };\n  }\n};\n\n\n/**\n * Marks that the current file should only be used for testing, and never for\n * live code in production.\n *\n * In the case of unit tests, the message may optionally be an exact namespace\n * for the test (e.g. 'goog.stringTest'). The linter will then ignore the extra\n * provide (if not explicitly defined in the code).\n *\n * @param {string=} opt_message Optional message to add to the error that's\n *     raised when used in production code.\n */\ngoog.setTestOnly = function(opt_message) {\n  if (goog.DISALLOW_TEST_ONLY_CODE) {\n    opt_message = opt_message || '';\n    throw new Error(\n        'Importing test-only code into non-debug environment' +\n        (opt_message ? ': ' + opt_message : '.'));\n  }\n};\n\n\n/**\n * Forward declares a symbol. This is an indication to the compiler that the\n * symbol may be used in the source yet is not required and may not be provided\n * in compilation.\n *\n * The most common usage of forward declaration is code that takes a type as a\n * function parameter but does not need to require it. By forward declaring\n * instead of requiring, no hard dependency is made, and (if not required\n * elsewhere) the namespace may never be required and thus, not be pulled\n * into the JavaScript binary. If it is required elsewhere, it will be type\n * checked as normal.\n *\n * Before using goog.forwardDeclare, please read the documentation at\n * https://github.com/google/closure-compiler/wiki/Bad-Type-Annotation to\n * understand the options and tradeoffs when working with forward declarations.\n *\n * @param {string} name The namespace to forward declare in the form of\n *     \"goog.package.part\".\n * @deprecated See go/noforwarddeclaration, Use `goog.requireType` instead.\n */\ngoog.forwardDeclare = function(name) {};\n\n\n/**\n * Forward declare type information. Used to assign types to goog.global\n * referenced object that would otherwise result in unknown type references\n * and thus block property disambiguation.\n */\ngoog.forwardDeclare('Document');\ngoog.forwardDeclare('HTMLScriptElement');\ngoog.forwardDeclare('XMLHttpRequest');\n\n\nif (!COMPILED) {\n  /**\n   * Check if the given name has been goog.provided. This will return false for\n   * names that are available only as implicit namespaces.\n   * @param {string} name name of the object to look for.\n   * @return {boolean} Whether the name has been provided.\n   * @private\n   */\n  goog.isProvided_ = function(name) {\n    return (name in goog.loadedModules_) ||\n        (!goog.implicitNamespaces_[name] && goog.getObjectByName(name) != null);\n  };\n\n  /**\n   * Namespaces implicitly defined by goog.provide. For example,\n   * goog.provide('goog.events.Event') implicitly declares that 'goog' and\n   * 'goog.events' must be namespaces.\n   *\n   * @type {!Object<string, (boolean|undefined)>}\n   * @private\n   */\n  goog.implicitNamespaces_ = {'goog.module': true};\n\n  // NOTE: We add goog.module as an implicit namespace as goog.module is defined\n  // here and because the existing module package has not been moved yet out of\n  // the goog.module namespace. This satisifies both the debug loader and\n  // ahead-of-time dependency management.\n}\n\n\n/**\n * Returns an object based on its fully qualified external name.  The object\n * is not found if null or undefined.  If you are using a compilation pass that\n * renames property names beware that using this function will not find renamed\n * properties.\n *\n * @param {string} name The fully qualified name.\n * @param {Object=} opt_obj The object within which to look; default is\n *     |goog.global|.\n * @return {?} The value (object or primitive) or, if not found, null.\n */\ngoog.getObjectByName = function(name, opt_obj) {\n  var parts = name.split('.');\n  var cur = opt_obj || goog.global;\n  for (var i = 0; i < parts.length; i++) {\n    cur = cur[parts[i]];\n    if (cur == null) {\n      return null;\n    }\n  }\n  return cur;\n};\n\n\n/**\n * Adds a dependency from a file to the files it requires.\n * @param {string} relPath The path to the js file.\n * @param {!Array<string>} provides An array of strings with\n *     the names of the objects this file provides.\n * @param {!Array<string>} requires An array of strings with\n *     the names of the objects this file requires.\n * @param {boolean|!Object<string>=} opt_loadFlags Parameters indicating\n *     how the file must be loaded.  The boolean 'true' is equivalent\n *     to {'module': 'goog'} for backwards-compatibility.  Valid properties\n *     and values include {'module': 'goog'} and {'lang': 'es6'}.\n */\ngoog.addDependency = function(relPath, provides, requires, opt_loadFlags) {\n  if (!COMPILED && goog.DEPENDENCIES_ENABLED) {\n    goog.debugLoader_.addDependency(relPath, provides, requires, opt_loadFlags);\n  }\n};\n\n\n// NOTE(nnaze): The debug DOM loader was included in base.js as an original way\n// to do \"debug-mode\" development.  The dependency system can sometimes be\n// confusing, as can the debug DOM loader's asynchronous nature.\n//\n// With the DOM loader, a call to goog.require() is not blocking -- the script\n// will not load until some point after the current script.  If a namespace is\n// needed at runtime, it needs to be defined in a previous script, or loaded via\n// require() with its registered dependencies.\n//\n// User-defined namespaces may need their own deps file. For a reference on\n// creating a deps file, see:\n// Externally: https://developers.google.com/closure/library/docs/depswriter\n//\n// Because of legacy clients, the DOM loader can't be easily removed from\n// base.js.  Work was done to make it disableable or replaceable for\n// different environments (DOM-less JavaScript interpreters like Rhino or V8,\n// for example). See bootstrap/ for more information.\n\n\n/**\n * @define {boolean} Whether to enable the debug loader.\n *\n * If enabled, a call to goog.require() will attempt to load the namespace by\n * appending a script tag to the DOM (if the namespace has been registered).\n *\n * If disabled, goog.require() will simply assert that the namespace has been\n * provided (and depend on the fact that some outside tool correctly ordered\n * the script).\n */\ngoog.ENABLE_DEBUG_LOADER = goog.define('goog.ENABLE_DEBUG_LOADER', true);\n\n\n/**\n * @param {string} msg\n * @private\n */\ngoog.logToConsole_ = function(msg) {\n  if (goog.global.console) {\n    goog.global.console['error'](msg);\n  }\n};\n\n\n/**\n * Implements a system for the dynamic resolution of dependencies that works in\n * parallel with the BUILD system.\n *\n * Note that all calls to goog.require will be stripped by the compiler.\n *\n * @see goog.provide\n * @param {string} namespace Namespace (as was given in goog.provide,\n *     goog.module, or goog.declareModuleId) in the form\n *     \"goog.package.part\".\n * @return {?} If called within a goog.module or ES6 module file, the associated\n *     namespace or module otherwise null.\n */\ngoog.require = function(namespace) {\n  if (!COMPILED) {\n    // Might need to lazy load on old IE.\n    if (goog.ENABLE_DEBUG_LOADER) {\n      goog.debugLoader_.requested(namespace);\n    }\n\n    // If the object already exists we do not need to do anything.\n    if (goog.isProvided_(namespace)) {\n      if (goog.isInModuleLoader_()) {\n        return goog.module.getInternal_(namespace);\n      }\n    } else if (goog.ENABLE_DEBUG_LOADER) {\n      var moduleLoaderState = goog.moduleLoaderState_;\n      goog.moduleLoaderState_ = null;\n      try {\n        goog.debugLoader_.load_(namespace);\n      } finally {\n        goog.moduleLoaderState_ = moduleLoaderState;\n      }\n    }\n\n    return null;\n  }\n};\n\n\n/**\n * Requires a symbol for its type information. This is an indication to the\n * compiler that the symbol may appear in type annotations, yet it is not\n * referenced at runtime.\n *\n * When called within a goog.module or ES6 module file, the return value may be\n * assigned to or destructured into a variable, but it may not be otherwise used\n * in code outside of a type annotation.\n *\n * Note that all calls to goog.requireType will be stripped by the compiler.\n *\n * @param {string} namespace Namespace (as was given in goog.provide,\n *     goog.module, or goog.declareModuleId) in the form\n *     \"goog.package.part\".\n * @return {?}\n */\ngoog.requireType = function(namespace) {\n  // Return an empty object so that single-level destructuring of the return\n  // value doesn't crash at runtime when using the debug loader. Multi-level\n  // destructuring isn't supported.\n  return {};\n};\n\n\n/**\n * Path for included scripts.\n * @type {string}\n */\ngoog.basePath = '';\n\n\n/**\n * A hook for overriding the base path.\n * @type {string|undefined}\n */\ngoog.global.CLOSURE_BASE_PATH;\n\n\n/**\n * Whether to attempt to load Closure's deps file. By default, when uncompiled,\n * deps files will attempt to be loaded.\n * @type {boolean|undefined}\n */\ngoog.global.CLOSURE_NO_DEPS;\n\n\n/**\n * A function to import a single script. This is meant to be overridden when\n * Closure is being run in non-HTML contexts, such as web workers. It's defined\n * in the global scope so that it can be set before base.js is loaded, which\n * allows deps.js to be imported properly.\n *\n * The first parameter the script source, which is a relative URI. The second,\n * optional parameter is the script contents, in the event the script needed\n * transformation. It should return true if the script was imported, false\n * otherwise.\n * @type {(function(string, string=): boolean)|undefined}\n */\ngoog.global.CLOSURE_IMPORT_SCRIPT;\n\n\n/**\n * Null function used for default values of callbacks, etc.\n * @return {void} Nothing.\n * @deprecated use '()=>{}' or 'function(){}' instead.\n */\ngoog.nullFunction = function() {};\n\n\n/**\n * When defining a class Foo with an abstract method bar(), you can do:\n * Foo.prototype.bar = goog.abstractMethod\n *\n * Now if a subclass of Foo fails to override bar(), an error will be thrown\n * when bar() is invoked.\n *\n * @type {!Function}\n * @throws {Error} when invoked to indicate the method should be overridden.\n * @deprecated Use \"@abstract\" annotation instead of goog.abstractMethod in new\n *     code. See\n *     https://github.com/google/closure-compiler/wiki/@abstract-classes-and-methods\n */\ngoog.abstractMethod = function() {\n  throw new Error('unimplemented abstract method');\n};\n\n\n/**\n * Adds a `getInstance` static method that always returns the same\n * instance object.\n * @param {!Function} ctor The constructor for the class to add the static\n *     method to.\n * @suppress {missingProperties} 'instance_' isn't a property on 'Function'\n *     but we don't have a better type to use here.\n */\ngoog.addSingletonGetter = function(ctor) {\n  // instance_ is immediately set to prevent issues with sealed constructors\n  // such as are encountered when a constructor is returned as the export object\n  // of a goog.module in unoptimized code.\n  // Delcare type to avoid conformance violations that ctor.instance_ is unknown\n  /** @type {undefined|!Object} @suppress {underscore} */\n  ctor.instance_ = undefined;\n  ctor.getInstance = function() {\n    if (ctor.instance_) {\n      return ctor.instance_;\n    }\n    if (goog.DEBUG) {\n      // NOTE: JSCompiler can't optimize away Array#push.\n      goog.instantiatedSingletons_[goog.instantiatedSingletons_.length] = ctor;\n    }\n    // Cast to avoid conformance violations that ctor.instance_ is unknown\n    return /** @type {!Object|undefined} */ (ctor.instance_) = new ctor;\n  };\n};\n\n\n/**\n * All singleton classes that have been instantiated, for testing. Don't read\n * it directly, use the `goog.testing.singleton` module. The compiler\n * removes this variable if unused.\n * @type {!Array<!Function>}\n * @private\n */\ngoog.instantiatedSingletons_ = [];\n\n\n/**\n * @define {boolean} Whether to load goog.modules using `eval` when using\n * the debug loader.  This provides a better debugging experience as the\n * source is unmodified and can be edited using Chrome Workspaces or similar.\n * However in some environments the use of `eval` is banned\n * so we provide an alternative.\n */\ngoog.LOAD_MODULE_USING_EVAL = goog.define('goog.LOAD_MODULE_USING_EVAL', true);\n\n\n/**\n * @define {boolean} Whether the exports of goog.modules should be sealed when\n * possible.\n */\ngoog.SEAL_MODULE_EXPORTS = goog.define('goog.SEAL_MODULE_EXPORTS', goog.DEBUG);\n\n\n/**\n * The registry of initialized modules:\n * The module identifier or path to module exports map.\n * @private @const {!Object<string, {exports:?,type:string,moduleId:string}>}\n */\ngoog.loadedModules_ = {};\n\n\n/**\n * True if the debug loader enabled and used.\n * @const {boolean}\n */\ngoog.DEPENDENCIES_ENABLED = !COMPILED && goog.ENABLE_DEBUG_LOADER;\n\n\n/**\n * @define {string} How to decide whether to transpile.  Valid values\n * are 'always', 'never', and 'detect'.  The default ('detect') is to\n * use feature detection to determine which language levels need\n * transpilation.\n */\n// NOTE(sdh): we could expand this to accept a language level to bypass\n// detection: e.g. goog.TRANSPILE == 'es5' would transpile ES6 files but\n// would leave ES3 and ES5 files alone.\ngoog.TRANSPILE = goog.define('goog.TRANSPILE', 'detect');\n\n/**\n * @define {boolean} If true assume that ES modules have already been\n * transpiled by the jscompiler (in the same way that transpile.js would\n * transpile them - to jscomp modules). Useful only for servers that wish to use\n * the debug loader and transpile server side. Thus this is only respected if\n * goog.TRANSPILE is \"never\".\n */\ngoog.ASSUME_ES_MODULES_TRANSPILED =\n    goog.define('goog.ASSUME_ES_MODULES_TRANSPILED', false);\n\n\n/**\n * @define {string} If a file needs to be transpiled what the output language\n * should be. By default this is the highest language level this file detects\n * the current environment supports. Generally this flag should not be set, but\n * it could be useful to override. Example: If the current environment supports\n * ES6 then by default ES7+ files will be transpiled to ES6, unless this is\n * overridden.\n *\n * Valid values include: es3, es5, es6, es7, and es8. Anything not recognized\n * is treated as es3.\n *\n * Note that setting this value does not force transpilation. Just if\n * transpilation occurs this will be the output. So this is most useful when\n * goog.TRANSPILE is set to 'always' and then forcing the language level to be\n * something lower than what the environment detects.\n */\ngoog.TRANSPILE_TO_LANGUAGE = goog.define('goog.TRANSPILE_TO_LANGUAGE', '');\n\n\n/**\n * @define {string} Path to the transpiler.  Executing the script at this\n * path (relative to base.js) should define a function $jscomp.transpile.\n */\ngoog.TRANSPILER = goog.define('goog.TRANSPILER', 'transpile.js');\n\n\n/**\n * @package {?boolean}\n * Visible for testing.\n */\ngoog.hasBadLetScoping = null;\n\n\n/**\n * @return {boolean}\n * @package Visible for testing.\n */\ngoog.useSafari10Workaround = function() {\n  if (goog.hasBadLetScoping == null) {\n    var hasBadLetScoping;\n    try {\n      hasBadLetScoping = !eval(\n          '\"use strict\";' +\n          'let x = 1; function f() { return typeof x; };' +\n          'f() == \"number\";');\n    } catch (e) {\n      // Assume that ES6 syntax isn't supported.\n      hasBadLetScoping = false;\n    }\n    goog.hasBadLetScoping = hasBadLetScoping;\n  }\n  return goog.hasBadLetScoping;\n};\n\n\n/**\n * @param {string} moduleDef\n * @return {string}\n * @package Visible for testing.\n */\ngoog.workaroundSafari10EvalBug = function(moduleDef) {\n  return '(function(){' + moduleDef +\n      '\\n' +  // Terminate any trailing single line comment.\n      ';' +   // Terminate any trailing expression.\n      '})();\\n';\n};\n\n\n/**\n * @param {function(?):?|string} moduleDef The module definition.\n */\ngoog.loadModule = function(moduleDef) {\n  // NOTE: we allow function definitions to be either in the from\n  // of a string to eval (which keeps the original source intact) or\n  // in a eval forbidden environment (CSP) we allow a function definition\n  // which in its body must call `goog.module`, and return the exports\n  // of the module.\n  var previousState = goog.moduleLoaderState_;\n  try {\n    goog.moduleLoaderState_ = {\n      moduleName: '',\n      declareLegacyNamespace: false,\n      type: goog.ModuleType.GOOG\n    };\n    var origExports = {};\n    var exports = origExports;\n    if (goog.isFunction(moduleDef)) {\n      exports = moduleDef.call(undefined, exports);\n    } else if (typeof moduleDef === 'string') {\n      if (goog.useSafari10Workaround()) {\n        moduleDef = goog.workaroundSafari10EvalBug(moduleDef);\n      }\n\n      exports = goog.loadModuleFromSource_.call(undefined, exports, moduleDef);\n    } else {\n      throw new Error('Invalid module definition');\n    }\n\n    var moduleName = goog.moduleLoaderState_.moduleName;\n    if (typeof moduleName === 'string' && moduleName) {\n      // Don't seal legacy namespaces as they may be used as a parent of\n      // another namespace\n      if (goog.moduleLoaderState_.declareLegacyNamespace) {\n        // Whether exports was overwritten via default export assignment.\n        // This is important for legacy namespaces as it dictates whether\n        // previously a previously loaded implicit namespace should be clobbered\n        // or not.\n        var isDefaultExport = origExports !== exports;\n        goog.constructNamespace_(moduleName, exports, isDefaultExport);\n      } else if (\n          goog.SEAL_MODULE_EXPORTS && Object.seal &&\n          typeof exports == 'object' && exports != null) {\n        Object.seal(exports);\n      }\n\n      var data = {\n        exports: exports,\n        type: goog.ModuleType.GOOG,\n        moduleId: goog.moduleLoaderState_.moduleName\n      };\n      goog.loadedModules_[moduleName] = data;\n    } else {\n      throw new Error('Invalid module name \\\"' + moduleName + '\\\"');\n    }\n  } finally {\n    goog.moduleLoaderState_ = previousState;\n  }\n};\n\n\n/**\n * @private @const\n */\ngoog.loadModuleFromSource_ =\n    /** @type {function(!Object, string):?} */ (function(exports) {\n      // NOTE: we avoid declaring parameters or local variables here to avoid\n      // masking globals or leaking values into the module definition.\n      'use strict';\n      eval(arguments[1]);\n      return exports;\n    });\n\n\n/**\n * Normalize a file path by removing redundant \"..\" and extraneous \".\" file\n * path components.\n * @param {string} path\n * @return {string}\n * @private\n */\ngoog.normalizePath_ = function(path) {\n  var components = path.split('/');\n  var i = 0;\n  while (i < components.length) {\n    if (components[i] == '.') {\n      components.splice(i, 1);\n    } else if (\n        i && components[i] == '..' && components[i - 1] &&\n        components[i - 1] != '..') {\n      components.splice(--i, 2);\n    } else {\n      i++;\n    }\n  }\n  return components.join('/');\n};\n\n\n/**\n * Provides a hook for loading a file when using Closure's goog.require() API\n * with goog.modules.  In particular this hook is provided to support Node.js.\n *\n * @type {(function(string):string)|undefined}\n */\ngoog.global.CLOSURE_LOAD_FILE_SYNC;\n\n\n/**\n * Loads file by synchronous XHR. Should not be used in production environments.\n * @param {string} src Source URL.\n * @return {?string} File contents, or null if load failed.\n * @private\n */\ngoog.loadFileSync_ = function(src) {\n  if (goog.global.CLOSURE_LOAD_FILE_SYNC) {\n    return goog.global.CLOSURE_LOAD_FILE_SYNC(src);\n  } else {\n    try {\n      /** @type {XMLHttpRequest} */\n      var xhr = new goog.global['XMLHttpRequest']();\n      xhr.open('get', src, false);\n      xhr.send();\n      // NOTE: Successful http: requests have a status of 200, but successful\n      // file: requests may have a status of zero.  Any other status, or a\n      // thrown exception (particularly in case of file: requests) indicates\n      // some sort of error, which we treat as a missing or unavailable file.\n      return xhr.status == 0 || xhr.status == 200 ? xhr.responseText : null;\n    } catch (err) {\n      // No need to rethrow or log, since errors should show up on their own.\n      return null;\n    }\n  }\n};\n\n\n/**\n * Lazily retrieves the transpiler and applies it to the source.\n * @param {string} code JS code.\n * @param {string} path Path to the code.\n * @param {string} target Language level output.\n * @return {string} The transpiled code.\n * @private\n */\ngoog.transpile_ = function(code, path, target) {\n  var jscomp = goog.global['$jscomp'];\n  if (!jscomp) {\n    goog.global['$jscomp'] = jscomp = {};\n  }\n  var transpile = jscomp.transpile;\n  if (!transpile) {\n    var transpilerPath = goog.basePath + goog.TRANSPILER;\n    var transpilerCode = goog.loadFileSync_(transpilerPath);\n    if (transpilerCode) {\n      // This must be executed synchronously, since by the time we know we\n      // need it, we're about to load and write the ES6 code synchronously,\n      // so a normal script-tag load will be too slow. Wrapped in a function\n      // so that code is eval'd in the global scope.\n      (function() {\n        (0, eval)(transpilerCode + '\\n//# sourceURL=' + transpilerPath);\n      }).call(goog.global);\n      // Even though the transpiler is optional, if $gwtExport is found, it's\n      // a sign the transpiler was loaded and the $jscomp.transpile *should*\n      // be there.\n      if (goog.global['$gwtExport'] && goog.global['$gwtExport']['$jscomp'] &&\n          !goog.global['$gwtExport']['$jscomp']['transpile']) {\n        throw new Error(\n            'The transpiler did not properly export the \"transpile\" ' +\n            'method. $gwtExport: ' + JSON.stringify(goog.global['$gwtExport']));\n      }\n      // transpile.js only exports a single $jscomp function, transpile. We\n      // grab just that and add it to the existing definition of $jscomp which\n      // contains the polyfills.\n      goog.global['$jscomp'].transpile =\n          goog.global['$gwtExport']['$jscomp']['transpile'];\n      jscomp = goog.global['$jscomp'];\n      transpile = jscomp.transpile;\n    }\n  }\n  if (!transpile) {\n    // The transpiler is an optional component.  If it's not available then\n    // replace it with a pass-through function that simply logs.\n    var suffix = ' requires transpilation but no transpiler was found.';\n    transpile = jscomp.transpile = function(code, path) {\n      // TODO(sdh): figure out some way to get this error to show up\n      // in test results, noting that the failure may occur in many\n      // different ways, including in loadModule() before the test\n      // runner even comes up.\n      goog.logToConsole_(path + suffix);\n      return code;\n    };\n  }\n  // Note: any transpilation errors/warnings will be logged to the console.\n  return transpile(code, path, target);\n};\n\n//==============================================================================\n// Language Enhancements\n//==============================================================================\n\n\n/**\n * This is a \"fixed\" version of the typeof operator.  It differs from the typeof\n * operator in such a way that null returns 'null' and arrays return 'array'.\n * @param {?} value The value to get the type of.\n * @return {string} The name of the type.\n */\ngoog.typeOf = function(value) {\n  var s = typeof value;\n\n  if (s != 'object') {\n    return s;\n  }\n\n  if (!value) {\n    return 'null';\n  }\n\n  if (Array.isArray(value)) {\n    return 'array';\n  }\n  return s;\n};\n\n\n/**\n * Returns true if the object looks like an array. To qualify as array like\n * the value needs to be either a NodeList or an object with a Number length\n * property. Note that for this function neither strings nor functions are\n * considered \"array-like\".\n *\n * @param {?} val Variable to test.\n * @return {boolean} Whether variable is an array.\n */\ngoog.isArrayLike = function(val) {\n  var type = goog.typeOf(val);\n  // We do not use goog.isObject here in order to exclude function values.\n  return type == 'array' || type == 'object' && typeof val.length == 'number';\n};\n\n\n/**\n * Returns true if the object looks like a Date. To qualify as Date-like the\n * value needs to be an object and have a getFullYear() function.\n * @param {?} val Variable to test.\n * @return {boolean} Whether variable is a like a Date.\n */\ngoog.isDateLike = function(val) {\n  return goog.isObject(val) && typeof val.getFullYear == 'function';\n};\n\n\n/**\n * Returns true if the specified value is a function.\n * @param {?} val Variable to test.\n * @return {boolean} Whether variable is a function.\n * @deprecated use \"typeof val === 'function'\" instead.\n */\ngoog.isFunction = function(val) {\n  return goog.typeOf(val) == 'function';\n};\n\n\n/**\n * Returns true if the specified value is an object.  This includes arrays and\n * functions.\n * @param {?} val Variable to test.\n * @return {boolean} Whether variable is an object.\n */\ngoog.isObject = function(val) {\n  var type = typeof val;\n  return type == 'object' && val != null || type == 'function';\n  // return Object(val) === val also works, but is slower, especially if val is\n  // not an object.\n};\n\n\n/**\n * Gets a unique ID for an object. This mutates the object so that further calls\n * with the same object as a parameter returns the same value. The unique ID is\n * guaranteed to be unique across the current session amongst objects that are\n * passed into `getUid`. There is no guarantee that the ID is unique or\n * consistent across sessions. It is unsafe to generate unique ID for function\n * prototypes.\n *\n * @param {Object} obj The object to get the unique ID for.\n * @return {number} The unique ID for the object.\n */\ngoog.getUid = function(obj) {\n  // TODO(arv): Make the type stricter, do not accept null.\n  return Object.prototype.hasOwnProperty.call(obj, goog.UID_PROPERTY_) &&\n      obj[goog.UID_PROPERTY_] ||\n      (obj[goog.UID_PROPERTY_] = ++goog.uidCounter_);\n};\n\n\n/**\n * Whether the given object is already assigned a unique ID.\n *\n * This does not modify the object.\n *\n * @param {!Object} obj The object to check.\n * @return {boolean} Whether there is an assigned unique id for the object.\n */\ngoog.hasUid = function(obj) {\n  return !!obj[goog.UID_PROPERTY_];\n};\n\n\n/**\n * Removes the unique ID from an object. This is useful if the object was\n * previously mutated using `goog.getUid` in which case the mutation is\n * undone.\n * @param {Object} obj The object to remove the unique ID field from.\n */\ngoog.removeUid = function(obj) {\n  // TODO(arv): Make the type stricter, do not accept null.\n\n  // In IE, DOM nodes are not instances of Object and throw an exception if we\n  // try to delete.  Instead we try to use removeAttribute.\n  if (obj !== null && 'removeAttribute' in obj) {\n    obj.removeAttribute(goog.UID_PROPERTY_);\n  }\n\n  try {\n    delete obj[goog.UID_PROPERTY_];\n  } catch (ex) {\n  }\n};\n\n\n/**\n * Name for unique ID property. Initialized in a way to help avoid collisions\n * with other closure JavaScript on the same page.\n * @type {string}\n * @private\n */\ngoog.UID_PROPERTY_ = 'closure_uid_' + ((Math.random() * 1e9) >>> 0);\n\n\n/**\n * Counter for UID.\n * @type {number}\n * @private\n */\ngoog.uidCounter_ = 0;\n\n\n/**\n * Clones a value. The input may be an Object, Array, or basic type. Objects and\n * arrays will be cloned recursively.\n *\n * WARNINGS:\n * <code>goog.cloneObject</code> does not detect reference loops. Objects that\n * refer to themselves will cause infinite recursion.\n *\n * <code>goog.cloneObject</code> is unaware of unique identifiers, and copies\n * UIDs created by <code>getUid</code> into cloned results.\n *\n * @param {*} obj The value to clone.\n * @return {*} A clone of the input value.\n * @deprecated goog.cloneObject is unsafe. Prefer the goog.object methods.\n */\ngoog.cloneObject = function(obj) {\n  var type = goog.typeOf(obj);\n  if (type == 'object' || type == 'array') {\n    if (typeof obj.clone === 'function') {\n      return obj.clone();\n    }\n    var clone = type == 'array' ? [] : {};\n    for (var key in obj) {\n      clone[key] = goog.cloneObject(obj[key]);\n    }\n    return clone;\n  }\n\n  return obj;\n};\n\n\n/**\n * A native implementation of goog.bind.\n * @param {?function(this:T, ...)} fn A function to partially apply.\n * @param {T} selfObj Specifies the object which this should point to when the\n *     function is run.\n * @param {...*} var_args Additional arguments that are partially applied to the\n *     function.\n * @return {!Function} A partially-applied form of the function goog.bind() was\n *     invoked as a method of.\n * @template T\n * @private\n */\ngoog.bindNative_ = function(fn, selfObj, var_args) {\n  return /** @type {!Function} */ (fn.call.apply(fn.bind, arguments));\n};\n\n\n/**\n * A pure-JS implementation of goog.bind.\n * @param {?function(this:T, ...)} fn A function to partially apply.\n * @param {T} selfObj Specifies the object which this should point to when the\n *     function is run.\n * @param {...*} var_args Additional arguments that are partially applied to the\n *     function.\n * @return {!Function} A partially-applied form of the function goog.bind() was\n *     invoked as a method of.\n * @template T\n * @private\n */\ngoog.bindJs_ = function(fn, selfObj, var_args) {\n  if (!fn) {\n    throw new Error();\n  }\n\n  if (arguments.length > 2) {\n    var boundArgs = Array.prototype.slice.call(arguments, 2);\n    return function() {\n      // Prepend the bound arguments to the current arguments.\n      var newArgs = Array.prototype.slice.call(arguments);\n      Array.prototype.unshift.apply(newArgs, boundArgs);\n      return fn.apply(selfObj, newArgs);\n    };\n\n  } else {\n    return function() {\n      return fn.apply(selfObj, arguments);\n    };\n  }\n};\n\n\n/**\n * Partially applies this function to a particular 'this object' and zero or\n * more arguments. The result is a new function with some arguments of the first\n * function pre-filled and the value of this 'pre-specified'.\n *\n * Remaining arguments specified at call-time are appended to the pre-specified\n * ones.\n *\n * Also see: {@link #partial}.\n *\n * Usage:\n * <pre>var barMethBound = goog.bind(myFunction, myObj, 'arg1', 'arg2');\n * barMethBound('arg3', 'arg4');</pre>\n *\n * @param {?function(this:T, ...)} fn A function to partially apply.\n * @param {T} selfObj Specifies the object which this should point to when the\n *     function is run.\n * @param {...*} var_args Additional arguments that are partially applied to the\n *     function.\n * @return {!Function} A partially-applied form of the function goog.bind() was\n *     invoked as a method of.\n * @template T\n * @suppress {deprecated} See above.\n * @deprecated use `=> {}` or Function.prototype.bind instead.\n */\ngoog.bind = function(fn, selfObj, var_args) {\n  // TODO(nicksantos): narrow the type signature.\n  if (Function.prototype.bind &&\n      // NOTE(nicksantos): Somebody pulled base.js into the default Chrome\n      // extension environment. This means that for Chrome extensions, they get\n      // the implementation of Function.prototype.bind that calls goog.bind\n      // instead of the native one. Even worse, we don't want to introduce a\n      // circular dependency between goog.bind and Function.prototype.bind, so\n      // we have to hack this to make sure it works correctly.\n      Function.prototype.bind.toString().indexOf('native code') != -1) {\n    goog.bind = goog.bindNative_;\n  } else {\n    goog.bind = goog.bindJs_;\n  }\n  return goog.bind.apply(null, arguments);\n};\n\n\n/**\n * Like goog.bind(), except that a 'this object' is not required. Useful when\n * the target function is already bound.\n *\n * Usage:\n * var g = goog.partial(f, arg1, arg2);\n * g(arg3, arg4);\n *\n * @param {Function} fn A function to partially apply.\n * @param {...*} var_args Additional arguments that are partially applied to fn.\n * @return {!Function} A partially-applied form of the function goog.partial()\n *     was invoked as a method of.\n */\ngoog.partial = function(fn, var_args) {\n  var args = Array.prototype.slice.call(arguments, 1);\n  return function() {\n    // Clone the array (with slice()) and append additional arguments\n    // to the existing arguments.\n    var newArgs = args.slice();\n    newArgs.push.apply(newArgs, arguments);\n    return fn.apply(/** @type {?} */ (this), newArgs);\n  };\n};\n\n\n/**\n * Copies all the members of a source object to a target object. This method\n * does not work on all browsers for all objects that contain keys such as\n * toString or hasOwnProperty. Use goog.object.extend for this purpose.\n *\n * NOTE: Some have advocated for the use of goog.mixin to setup classes\n * with multiple inheritence (traits, mixins, etc).  However, as it simply\n * uses \"for in\", this is not compatible with ES6 classes whose methods are\n * non-enumerable.  Changing this, would break cases where non-enumerable\n * properties are not expected.\n *\n * @param {Object} target Target.\n * @param {Object} source Source.\n * @deprecated Prefer Object.assign\n */\ngoog.mixin = function(target, source) {\n  for (var x in source) {\n    target[x] = source[x];\n  }\n\n  // For IE7 or lower, the for-in-loop does not contain any properties that are\n  // not enumerable on the prototype object (for example, isPrototypeOf from\n  // Object.prototype) but also it will not include 'replace' on objects that\n  // extend String and change 'replace' (not that it is common for anyone to\n  // extend anything except Object).\n};\n\n\n/**\n * @return {number} An integer value representing the number of milliseconds\n *     between midnight, January 1, 1970 and the current time.\n * @deprecated Use Date.now\n */\ngoog.now = Date.now;\n\n\n/**\n * Evals JavaScript in the global scope.\n *\n * Throws an exception if neither execScript or eval is defined.\n * @param {string} script JavaScript string.\n */\ngoog.globalEval = function(script) {\n  (0, eval)(script);\n};\n\n\n/**\n * Optional map of CSS class names to obfuscated names used with\n * goog.getCssName().\n * @private {!Object<string, string>|undefined}\n * @see goog.setCssNameMapping\n */\ngoog.cssNameMapping_;\n\n\n/**\n * Optional obfuscation style for CSS class names. Should be set to either\n * 'BY_WHOLE' or 'BY_PART' if defined.\n * @type {string|undefined}\n * @private\n * @see goog.setCssNameMapping\n */\ngoog.cssNameMappingStyle_;\n\n\n\n/**\n * A hook for modifying the default behavior goog.getCssName. The function\n * if present, will receive the standard output of the goog.getCssName as\n * its input.\n *\n * @type {(function(string):string)|undefined}\n */\ngoog.global.CLOSURE_CSS_NAME_MAP_FN;\n\n\n/**\n * Handles strings that are intended to be used as CSS class names.\n *\n * This function works in tandem with @see goog.setCssNameMapping.\n *\n * Without any mapping set, the arguments are simple joined with a hyphen and\n * passed through unaltered.\n *\n * When there is a mapping, there are two possible styles in which these\n * mappings are used. In the BY_PART style, each part (i.e. in between hyphens)\n * of the passed in css name is rewritten according to the map. In the BY_WHOLE\n * style, the full css name is looked up in the map directly. If a rewrite is\n * not specified by the map, the compiler will output a warning.\n *\n * When the mapping is passed to the compiler, it will replace calls to\n * goog.getCssName with the strings from the mapping, e.g.\n *     var x = goog.getCssName('foo');\n *     var y = goog.getCssName(this.baseClass, 'active');\n *  becomes:\n *     var x = 'foo';\n *     var y = this.baseClass + '-active';\n *\n * If one argument is passed it will be processed, if two are passed only the\n * modifier will be processed, as it is assumed the first argument was generated\n * as a result of calling goog.getCssName.\n *\n * @param {string} className The class name.\n * @param {string=} opt_modifier A modifier to be appended to the class name.\n * @return {string} The class name or the concatenation of the class name and\n *     the modifier.\n */\ngoog.getCssName = function(className, opt_modifier) {\n  // String() is used for compatibility with compiled soy where the passed\n  // className can be non-string objects.\n  if (String(className).charAt(0) == '.') {\n    throw new Error(\n        'className passed in goog.getCssName must not start with \".\".' +\n        ' You passed: ' + className);\n  }\n\n  var getMapping = function(cssName) {\n    return goog.cssNameMapping_[cssName] || cssName;\n  };\n\n  var renameByParts = function(cssName) {\n    // Remap all the parts individually.\n    var parts = cssName.split('-');\n    var mapped = [];\n    for (var i = 0; i < parts.length; i++) {\n      mapped.push(getMapping(parts[i]));\n    }\n    return mapped.join('-');\n  };\n\n  var rename;\n  if (goog.cssNameMapping_) {\n    rename =\n        goog.cssNameMappingStyle_ == 'BY_WHOLE' ? getMapping : renameByParts;\n  } else {\n    rename = function(a) {\n      return a;\n    };\n  }\n\n  var result =\n      opt_modifier ? className + '-' + rename(opt_modifier) : rename(className);\n\n  // The special CLOSURE_CSS_NAME_MAP_FN allows users to specify further\n  // processing of the class name.\n  if (goog.global.CLOSURE_CSS_NAME_MAP_FN) {\n    return goog.global.CLOSURE_CSS_NAME_MAP_FN(result);\n  }\n\n  return result;\n};\n\n\n/**\n * Sets the map to check when returning a value from goog.getCssName(). Example:\n * <pre>\n * goog.setCssNameMapping({\n *   \"goog\": \"a\",\n *   \"disabled\": \"b\",\n * });\n *\n * var x = goog.getCssName('goog');\n * // The following evaluates to: \"a a-b\".\n * goog.getCssName('goog') + ' ' + goog.getCssName(x, 'disabled')\n * </pre>\n * When declared as a map of string literals to string literals, the JSCompiler\n * will replace all calls to goog.getCssName() using the supplied map if the\n * --process_closure_primitives flag is set.\n *\n * @param {!Object} mapping A map of strings to strings where keys are possible\n *     arguments to goog.getCssName() and values are the corresponding values\n *     that should be returned.\n * @param {string=} opt_style The style of css name mapping. There are two valid\n *     options: 'BY_PART', and 'BY_WHOLE'.\n * @see goog.getCssName for a description.\n */\ngoog.setCssNameMapping = function(mapping, opt_style) {\n  goog.cssNameMapping_ = mapping;\n  goog.cssNameMappingStyle_ = opt_style;\n};\n\n\n/**\n * To use CSS renaming in compiled mode, one of the input files should have a\n * call to goog.setCssNameMapping() with an object literal that the JSCompiler\n * can extract and use to replace all calls to goog.getCssName(). In uncompiled\n * mode, JavaScript code should be loaded before this base.js file that declares\n * a global variable, CLOSURE_CSS_NAME_MAPPING, which is used below. This is\n * to ensure that the mapping is loaded before any calls to goog.getCssName()\n * are made in uncompiled mode.\n *\n * A hook for overriding the CSS name mapping.\n * @type {!Object<string, string>|undefined}\n */\ngoog.global.CLOSURE_CSS_NAME_MAPPING;\n\n\nif (!COMPILED && goog.global.CLOSURE_CSS_NAME_MAPPING) {\n  // This does not call goog.setCssNameMapping() because the JSCompiler\n  // requires that goog.setCssNameMapping() be called with an object literal.\n  goog.cssNameMapping_ = goog.global.CLOSURE_CSS_NAME_MAPPING;\n}\n\n\n/**\n * Gets a localized message.\n *\n * This function is a compiler primitive. If you give the compiler a localized\n * message bundle, it will replace the string at compile-time with a localized\n * version, and expand goog.getMsg call to a concatenated string.\n *\n * Messages must be initialized in the form:\n * <code>\n * var MSG_NAME = goog.getMsg('Hello {$placeholder}', {'placeholder': 'world'});\n * </code>\n *\n * This function produces a string which should be treated as plain text. Use\n * {@link goog.html.SafeHtmlFormatter} in conjunction with goog.getMsg to\n * produce SafeHtml.\n *\n * @param {string} str Translatable string, places holders in the form {$foo}.\n * @param {Object<string, string>=} opt_values Maps place holder name to value.\n * @param {{html: boolean}=} opt_options Options:\n *     html: Escape '<' in str to '&lt;'. Used by Closure Templates where the\n *     generated code size and performance is critical which is why {@link\n *     goog.html.SafeHtmlFormatter} is not used. The value must be literal true\n *     or false.\n * @return {string} message with placeholders filled.\n */\ngoog.getMsg = function(str, opt_values, opt_options) {\n  if (opt_options && opt_options.html) {\n    // Note that '&' is not replaced because the translation can contain HTML\n    // entities.\n    str = str.replace(/</g, '&lt;');\n  }\n  if (opt_values) {\n    str = str.replace(/\\{\\$([^}]+)}/g, function(match, key) {\n      return (opt_values != null && key in opt_values) ? opt_values[key] :\n                                                         match;\n    });\n  }\n  return str;\n};\n\n\n/**\n * Gets a localized message. If the message does not have a translation, gives a\n * fallback message.\n *\n * This is useful when introducing a new message that has not yet been\n * translated into all languages.\n *\n * This function is a compiler primitive. Must be used in the form:\n * <code>var x = goog.getMsgWithFallback(MSG_A, MSG_B);</code>\n * where MSG_A and MSG_B were initialized with goog.getMsg.\n *\n * @param {string} a The preferred message.\n * @param {string} b The fallback message.\n * @return {string} The best translated message.\n */\ngoog.getMsgWithFallback = function(a, b) {\n  return a;\n};\n\n\n/**\n * Exposes an unobfuscated global namespace path for the given object.\n * Note that fields of the exported object *will* be obfuscated, unless they are\n * exported in turn via this function or goog.exportProperty.\n *\n * Also handy for making public items that are defined in anonymous closures.\n *\n * ex. goog.exportSymbol('public.path.Foo', Foo);\n *\n * ex. goog.exportSymbol('public.path.Foo.staticFunction', Foo.staticFunction);\n *     public.path.Foo.staticFunction();\n *\n * ex. goog.exportSymbol('public.path.Foo.prototype.myMethod',\n *                       Foo.prototype.myMethod);\n *     new public.path.Foo().myMethod();\n *\n * @param {string} publicPath Unobfuscated name to export.\n * @param {*} object Object the name should point to.\n * @param {?Object=} objectToExportTo The object to add the path to; default\n *     is goog.global.\n */\ngoog.exportSymbol = function(publicPath, object, objectToExportTo) {\n  goog.exportPath_(\n      publicPath, object, /* overwriteImplicit= */ true, objectToExportTo);\n};\n\n\n/**\n * Exports a property unobfuscated into the object's namespace.\n * ex. goog.exportProperty(Foo, 'staticFunction', Foo.staticFunction);\n * ex. goog.exportProperty(Foo.prototype, 'myMethod', Foo.prototype.myMethod);\n * @param {Object} object Object whose static property is being exported.\n * @param {string} publicName Unobfuscated name to export.\n * @param {*} symbol Object the name should point to.\n */\ngoog.exportProperty = function(object, publicName, symbol) {\n  object[publicName] = symbol;\n};\n\n\n/**\n * Inherit the prototype methods from one constructor into another.\n *\n * Usage:\n * <pre>\n * function ParentClass(a, b) { }\n * ParentClass.prototype.foo = function(a) { };\n *\n * function ChildClass(a, b, c) {\n *   ChildClass.base(this, 'constructor', a, b);\n * }\n * goog.inherits(ChildClass, ParentClass);\n *\n * var child = new ChildClass('a', 'b', 'see');\n * child.foo(); // This works.\n * </pre>\n *\n * @param {!Function} childCtor Child class.\n * @param {!Function} parentCtor Parent class.\n * @suppress {strictMissingProperties} superClass_ and base is not defined on\n *    Function.\n * @deprecated Use ECMAScript class syntax instead.\n */\ngoog.inherits = function(childCtor, parentCtor) {\n  /** @constructor */\n  function tempCtor() {}\n  tempCtor.prototype = parentCtor.prototype;\n  childCtor.superClass_ = parentCtor.prototype;\n  childCtor.prototype = new tempCtor();\n  /** @override */\n  childCtor.prototype.constructor = childCtor;\n\n  /**\n   * Calls superclass constructor/method.\n   *\n   * This function is only available if you use goog.inherits to\n   * express inheritance relationships between classes.\n   *\n   * NOTE: This is a replacement for goog.base and for superClass_\n   * property defined in childCtor.\n   *\n   * @param {!Object} me Should always be \"this\".\n   * @param {string} methodName The method name to call. Calling\n   *     superclass constructor can be done with the special string\n   *     'constructor'.\n   * @param {...*} var_args The arguments to pass to superclass\n   *     method/constructor.\n   * @return {*} The return value of the superclass method/constructor.\n   */\n  childCtor.base = function(me, methodName, var_args) {\n    // Copying using loop to avoid deop due to passing arguments object to\n    // function. This is faster in many JS engines as of late 2014.\n    var args = new Array(arguments.length - 2);\n    for (var i = 2; i < arguments.length; i++) {\n      args[i - 2] = arguments[i];\n    }\n    return parentCtor.prototype[methodName].apply(me, args);\n  };\n};\n\n\n/**\n * Allow for aliasing within scope functions.  This function exists for\n * uncompiled code - in compiled code the calls will be inlined and the aliases\n * applied.  In uncompiled code the function is simply run since the aliases as\n * written are valid JavaScript.\n *\n *\n * @param {function()} fn Function to call.  This function can contain aliases\n *     to namespaces (e.g. \"var dom = goog.dom\") or classes\n *     (e.g. \"var Timer = goog.Timer\").\n * @deprecated Use goog.module instead.\n */\ngoog.scope = function(fn) {\n  if (goog.isInModuleLoader_()) {\n    throw new Error('goog.scope is not supported within a module.');\n  }\n  fn.call(goog.global);\n};\n\n\n/*\n * To support uncompiled, strict mode bundles that use eval to divide source\n * like so:\n *    eval('someSource;//# sourceUrl sourcefile.js');\n * We need to export the globally defined symbols \"goog\" and \"COMPILED\".\n * Exporting \"goog\" breaks the compiler optimizations, so we required that\n * be defined externally.\n * NOTE: We don't use goog.exportSymbol here because we don't want to trigger\n * extern generation when that compiler option is enabled.\n */\nif (!COMPILED) {\n  goog.global['COMPILED'] = COMPILED;\n}\n\n\n//==============================================================================\n// goog.defineClass implementation\n//==============================================================================\n\n\n/**\n * Creates a restricted form of a Closure \"class\":\n *   - from the compiler's perspective, the instance returned from the\n *     constructor is sealed (no new properties may be added).  This enables\n *     better checks.\n *   - the compiler will rewrite this definition to a form that is optimal\n *     for type checking and optimization (initially this will be a more\n *     traditional form).\n *\n * @param {Function} superClass The superclass, Object or null.\n * @param {goog.defineClass.ClassDescriptor} def\n *     An object literal describing\n *     the class.  It may have the following properties:\n *     \"constructor\": the constructor function\n *     \"statics\": an object literal containing methods to add to the constructor\n *        as \"static\" methods or a function that will receive the constructor\n *        function as its only parameter to which static properties can\n *        be added.\n *     all other properties are added to the prototype.\n * @return {!Function} The class constructor.\n * @deprecated Use ECMAScript class syntax instead.\n */\ngoog.defineClass = function(superClass, def) {\n  // TODO(johnlenz): consider making the superClass an optional parameter.\n  var constructor = def.constructor;\n  var statics = def.statics;\n  // Wrap the constructor prior to setting up the prototype and static methods.\n  if (!constructor || constructor == Object.prototype.constructor) {\n    constructor = function() {\n      throw new Error(\n          'cannot instantiate an interface (no constructor defined).');\n    };\n  }\n\n  var cls = goog.defineClass.createSealingConstructor_(constructor, superClass);\n  if (superClass) {\n    goog.inherits(cls, superClass);\n  }\n\n  // Remove all the properties that should not be copied to the prototype.\n  delete def.constructor;\n  delete def.statics;\n\n  goog.defineClass.applyProperties_(cls.prototype, def);\n  if (statics != null) {\n    if (statics instanceof Function) {\n      statics(cls);\n    } else {\n      goog.defineClass.applyProperties_(cls, statics);\n    }\n  }\n\n  return cls;\n};\n\n\n/**\n * @typedef {{\n *   constructor: (!Function|undefined),\n *   statics: (Object|undefined|function(Function):void)\n * }}\n */\ngoog.defineClass.ClassDescriptor;\n\n\n/**\n * @define {boolean} Whether the instances returned by goog.defineClass should\n *     be sealed when possible.\n *\n * When sealing is disabled the constructor function will not be wrapped by\n * goog.defineClass, making it incompatible with ES6 class methods.\n */\ngoog.defineClass.SEAL_CLASS_INSTANCES =\n    goog.define('goog.defineClass.SEAL_CLASS_INSTANCES', goog.DEBUG);\n\n\n/**\n * If goog.defineClass.SEAL_CLASS_INSTANCES is enabled and Object.seal is\n * defined, this function will wrap the constructor in a function that seals the\n * results of the provided constructor function.\n *\n * @param {!Function} ctr The constructor whose results maybe be sealed.\n * @param {Function} superClass The superclass constructor.\n * @return {!Function} The replacement constructor.\n * @private\n */\ngoog.defineClass.createSealingConstructor_ = function(ctr, superClass) {\n  if (!goog.defineClass.SEAL_CLASS_INSTANCES) {\n    // Do now wrap the constructor when sealing is disabled. Angular code\n    // depends on this for injection to work properly.\n    return ctr;\n  }\n\n  // NOTE: The sealing behavior has been removed\n\n  /**\n   * @this {Object}\n   * @return {?}\n   */\n  var wrappedCtr = function() {\n    // Don't seal an instance of a subclass when it calls the constructor of\n    // its super class as there is most likely still setup to do.\n    var instance = ctr.apply(this, arguments) || this;\n    instance[goog.UID_PROPERTY_] = instance[goog.UID_PROPERTY_];\n\n    return instance;\n  };\n\n  return wrappedCtr;\n};\n\n\n\n// TODO(johnlenz): share these values with the goog.object\n/**\n * The names of the fields that are defined on Object.prototype.\n * @type {!Array<string>}\n * @private\n * @const\n */\ngoog.defineClass.OBJECT_PROTOTYPE_FIELDS_ = [\n  'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable',\n  'toLocaleString', 'toString', 'valueOf'\n];\n\n\n// TODO(johnlenz): share this function with the goog.object\n/**\n * @param {!Object} target The object to add properties to.\n * @param {!Object} source The object to copy properties from.\n * @private\n */\ngoog.defineClass.applyProperties_ = function(target, source) {\n  // TODO(johnlenz): update this to support ES5 getters/setters\n\n  var key;\n  for (key in source) {\n    if (Object.prototype.hasOwnProperty.call(source, key)) {\n      target[key] = source[key];\n    }\n  }\n\n  // For IE the for-in-loop does not contain any properties that are not\n  // enumerable on the prototype object (for example isPrototypeOf from\n  // Object.prototype) and it will also not include 'replace' on objects that\n  // extend String and change 'replace' (not that it is common for anyone to\n  // extend anything except Object).\n  for (var i = 0; i < goog.defineClass.OBJECT_PROTOTYPE_FIELDS_.length; i++) {\n    key = goog.defineClass.OBJECT_PROTOTYPE_FIELDS_[i];\n    if (Object.prototype.hasOwnProperty.call(source, key)) {\n      target[key] = source[key];\n    }\n  }\n};\n\n\n// There's a bug in the compiler where without collapse properties the\n// Closure namespace defines do not guard code correctly. To help reduce code\n// size also check for !COMPILED even though it redundant until this is fixed.\nif (!COMPILED && goog.DEPENDENCIES_ENABLED) {\n\n  /**\n   * Returns the most recently added script element in the DOM.\n   * @return {?Element}\n   * @private\n   */\n  goog.getLastScript_ = function() {\n    var elem = document.documentElement;\n    while (elem.nodeName != 'SCRIPT' && elem.lastChild) {\n      elem = elem.lastChild;\n    }\n    return /** @type {?Element} */ (elem);\n  };\n\n  /**\n   * Tries to detect whether is in the context of an HTML document.\n   * @return {boolean} True if it looks like HTML document.\n   * @private\n   */\n  goog.inHtmlDocument_ = function() {\n    /** @type {!Document} */\n    var doc = goog.global.document;\n    return doc != null && 'write' in doc;  // XULDocument misses write.\n  };\n\n\n  /**\n   * We'd like to check for if the document readyState is 'loading'; however\n   * there are bugs on IE 10 and below where the readyState being anything other\n   * than 'complete' is not reliable.\n   * @return {boolean}\n   * @private\n   */\n  goog.isDocumentLoading_ = function() {\n    // attachEvent is available on IE 6 thru 10 only, and thus can be used to\n    // detect those browsers.\n    /** @type {!HTMLDocument} */\n    var doc = goog.global.document;\n    return doc.attachEvent ? doc.readyState != 'complete' :\n                             doc.readyState == 'loading';\n  };\n\n\n  /**\n   * Tries to detect the base path of base.js script that bootstraps Closure.\n   * @private\n   */\n  goog.findBasePath_ = function() {\n    if (goog.global.CLOSURE_BASE_PATH != undefined &&\n        // Anti DOM-clobbering runtime check (b/37736576).\n        typeof goog.global.CLOSURE_BASE_PATH === 'string') {\n      goog.basePath = goog.global.CLOSURE_BASE_PATH;\n      return;\n    } else if (!goog.inHtmlDocument_()) {\n      return;\n    }\n    /** @type {!Document} */\n    var doc = goog.global.document;\n    // If we have a currentScript available, use it exclusively.\n    var currentScript = doc.currentScript;\n    if (currentScript) {\n      var scripts = [currentScript];\n    } else {\n      var scripts = doc.getElementsByTagName('SCRIPT');\n    }\n    // Search backwards since the current script is in almost all cases the one\n    // that has base.js.\n    for (var i = scripts.length - 1; i >= 0; --i) {\n      var script = /** @type {!HTMLScriptElement} */ (scripts[i]);\n      var src = script.src;\n      var qmark = src.lastIndexOf('?');\n      var l = qmark == -1 ? src.length : qmark;\n      if (src.substr(l - 7, 7) == 'base.js') {\n        goog.basePath = src.substr(0, l - 7);\n        return;\n      }\n    }\n  };\n\n  goog.findBasePath_();\n\n  /** @struct @constructor @final */\n  goog.Transpiler = function() {\n    /** @private {?Object<string, boolean>} */\n    this.requiresTranspilation_ = null;\n    /** @private {string} */\n    this.transpilationTarget_ = goog.TRANSPILE_TO_LANGUAGE;\n  };\n  /**\n   * Returns a newly created map from language mode string to a boolean\n   * indicating whether transpilation should be done for that mode as well as\n   * the highest level language that this environment supports.\n   *\n   * Guaranteed invariant:\n   * For any two modes, l1 and l2 where l2 is a newer mode than l1,\n   * `map[l1] == true` implies that `map[l2] == true`.\n   *\n   * Note this method is extracted and used elsewhere, so it cannot rely on\n   * anything external (it should easily be able to be transformed into a\n   * standalone, top level function).\n   *\n   * @private\n   * @return {{\n   *   target: string,\n   *   map: !Object<string, boolean>\n   * }}\n   */\n  goog.Transpiler.prototype.createRequiresTranspilation_ = function() {\n    var transpilationTarget = 'es3';\n    var /** !Object<string, boolean> */ requiresTranspilation = {'es3': false};\n    var transpilationRequiredForAllLaterModes = false;\n\n    /**\n     * Adds an entry to requiresTranspliation for the given language mode.\n     *\n     * IMPORTANT: Calls must be made in order from oldest to newest language\n     * mode.\n     * @param {string} modeName\n     * @param {function(): boolean} isSupported Returns true if the JS engine\n     *     supports the given mode.\n     */\n    function addNewerLanguageTranspilationCheck(modeName, isSupported) {\n      if (transpilationRequiredForAllLaterModes) {\n        requiresTranspilation[modeName] = true;\n      } else if (isSupported()) {\n        transpilationTarget = modeName;\n        requiresTranspilation[modeName] = false;\n      } else {\n        requiresTranspilation[modeName] = true;\n        transpilationRequiredForAllLaterModes = true;\n      }\n    }\n\n    /**\n     * Does the given code evaluate without syntax errors and return a truthy\n     * result?\n     */\n    function /** boolean */ evalCheck(/** string */ code) {\n      try {\n        return !!eval(code);\n      } catch (ignored) {\n        return false;\n      }\n    }\n\n    var userAgent = goog.global.navigator && goog.global.navigator.userAgent ?\n        goog.global.navigator.userAgent :\n        '';\n\n    // Identify ES3-only browsers by their incorrect treatment of commas.\n    addNewerLanguageTranspilationCheck('es5', function() {\n      return evalCheck('[1,].length==1');\n    });\n    addNewerLanguageTranspilationCheck('es6', function() {\n      // Edge has a non-deterministic (i.e., not reproducible) bug with ES6:\n      // https://github.com/Microsoft/ChakraCore/issues/1496.\n      var re = /Edge\\/(\\d+)(\\.\\d)*/i;\n      var edgeUserAgent = userAgent.match(re);\n      if (edgeUserAgent) {\n        // The Reflect.construct test below is flaky on Edge. It can sometimes\n        // pass or fail on 40 15.15063, so just exit early for Edge and treat\n        // it as ES5. Until we're on a more up to date version just always use\n        // ES5. See https://github.com/Microsoft/ChakraCore/issues/3217.\n        return false;\n      }\n      // Test es6: [FF50 (?), Edge 14 (?), Chrome 50]\n      //   (a) default params (specifically shadowing locals),\n      //   (b) destructuring, (c) block-scoped functions,\n      //   (d) for-of (const), (e) new.target/Reflect.construct\n      var es6fullTest =\n          'class X{constructor(){if(new.target!=String)throw 1;this.x=42}}' +\n          'let q=Reflect.construct(X,[],String);if(q.x!=42||!(q instanceof ' +\n          'String))throw 1;for(const a of[2,3]){if(a==2)continue;function ' +\n          'f(z={a}){let a=0;return z.a}{function f(){return 0;}}return f()' +\n          '==3}';\n\n      return evalCheck('(()=>{\"use strict\";' + es6fullTest + '})()');\n    });\n    // ** and **= are the only new features in 'es7'\n    addNewerLanguageTranspilationCheck('es7', function() {\n      return evalCheck('2 ** 2 == 4');\n    });\n    // async functions are the only new features in 'es8'\n    addNewerLanguageTranspilationCheck('es8', function() {\n      return evalCheck('async () => 1, true');\n    });\n    addNewerLanguageTranspilationCheck('es9', function() {\n      return evalCheck('({...rest} = {}), true');\n    });\n    addNewerLanguageTranspilationCheck('es_next', function() {\n      return false;  // assume it always need to transpile\n    });\n    return {target: transpilationTarget, map: requiresTranspilation};\n  };\n\n\n  /**\n   * Determines whether the given language needs to be transpiled.\n   * @param {string} lang\n   * @param {string|undefined} module\n   * @return {boolean}\n   */\n  goog.Transpiler.prototype.needsTranspile = function(lang, module) {\n    if (goog.TRANSPILE == 'always') {\n      return true;\n    } else if (goog.TRANSPILE == 'never') {\n      return false;\n    } else if (!this.requiresTranspilation_) {\n      var obj = this.createRequiresTranspilation_();\n      this.requiresTranspilation_ = obj.map;\n      this.transpilationTarget_ = this.transpilationTarget_ || obj.target;\n    }\n    if (lang in this.requiresTranspilation_) {\n      if (this.requiresTranspilation_[lang]) {\n        return true;\n      } else if (\n          goog.inHtmlDocument_() && module == 'es6' &&\n          !('noModule' in goog.global.document.createElement('script'))) {\n        return true;\n      } else {\n        return false;\n      }\n    } else {\n      throw new Error('Unknown language mode: ' + lang);\n    }\n  };\n\n\n  /**\n   * Lazily retrieves the transpiler and applies it to the source.\n   * @param {string} code JS code.\n   * @param {string} path Path to the code.\n   * @return {string} The transpiled code.\n   */\n  goog.Transpiler.prototype.transpile = function(code, path) {\n    // TODO(johnplaisted): We should delete goog.transpile_ and just have this\n    // function. But there's some compile error atm where goog.global is being\n    // stripped incorrectly without this.\n    return goog.transpile_(code, path, this.transpilationTarget_);\n  };\n\n\n  /** @private @final {!goog.Transpiler} */\n  goog.transpiler_ = new goog.Transpiler();\n\n  /**\n   * Rewrites closing script tags in input to avoid ending an enclosing script\n   * tag.\n   *\n   * @param {string} str\n   * @return {string}\n   * @private\n   */\n  goog.protectScriptTag_ = function(str) {\n    return str.replace(/<\\/(SCRIPT)/ig, '\\\\x3c/$1');\n  };\n\n\n  /**\n   * A debug loader is responsible for downloading and executing javascript\n   * files in an unbundled, uncompiled environment.\n   *\n   * This can be custimized via the setDependencyFactory method, or by\n   * CLOSURE_IMPORT_SCRIPT/CLOSURE_LOAD_FILE_SYNC.\n   *\n   * @struct @constructor @final @private\n   */\n  goog.DebugLoader_ = function() {\n    /** @private @const {!Object<string, !goog.Dependency>} */\n    this.dependencies_ = {};\n    /** @private @const {!Object<string, string>} */\n    this.idToPath_ = {};\n    /** @private @const {!Object<string, boolean>} */\n    this.written_ = {};\n    /** @private @const {!Array<!goog.Dependency>} */\n    this.loadingDeps_ = [];\n    /** @private {!Array<!goog.Dependency>} */\n    this.depsToLoad_ = [];\n    /** @private {boolean} */\n    this.paused_ = false;\n    /** @private {!goog.DependencyFactory} */\n    this.factory_ = new goog.DependencyFactory(goog.transpiler_);\n    /** @private @const {!Object<string, !Function>} */\n    this.deferredCallbacks_ = {};\n    /** @private @const {!Array<string>} */\n    this.deferredQueue_ = [];\n  };\n\n  /**\n   * @param {!Array<string>} namespaces\n   * @param {function(): undefined} callback Function to call once all the\n   *     namespaces have loaded.\n   */\n  goog.DebugLoader_.prototype.bootstrap = function(namespaces, callback) {\n    var cb = callback;\n    function resolve() {\n      if (cb) {\n        goog.global.setTimeout(cb, 0);\n        cb = null;\n      }\n    }\n\n    if (!namespaces.length) {\n      resolve();\n      return;\n    }\n\n    var deps = [];\n    for (var i = 0; i < namespaces.length; i++) {\n      var path = this.getPathFromDeps_(namespaces[i]);\n      if (!path) {\n        throw new Error('Unregonized namespace: ' + namespaces[i]);\n      }\n      deps.push(this.dependencies_[path]);\n    }\n\n    var require = goog.require;\n    var loaded = 0;\n    for (var i = 0; i < namespaces.length; i++) {\n      require(namespaces[i]);\n      deps[i].onLoad(function() {\n        if (++loaded == namespaces.length) {\n          resolve();\n        }\n      });\n    }\n  };\n\n\n  /**\n   * Loads the Closure Dependency file.\n   *\n   * Exposed a public function so CLOSURE_NO_DEPS can be set to false, base\n   * loaded, setDependencyFactory called, and then this called. i.e. allows\n   * custom loading of the deps file.\n   */\n  goog.DebugLoader_.prototype.loadClosureDeps = function() {\n    // Circumvent addDependency, which would try to transpile deps.js if\n    // transpile is set to always.\n    var relPath = 'deps.js';\n    this.depsToLoad_.push(this.factory_.createDependency(\n        goog.normalizePath_(goog.basePath + relPath), relPath, [], [], {},\n        false));\n    this.loadDeps_();\n  };\n\n\n  /**\n   * Notifies the debug loader when a dependency has been requested.\n   *\n   * @param {string} absPathOrId Path of the dependency or goog id.\n   * @param {boolean=} opt_force\n   */\n  goog.DebugLoader_.prototype.requested = function(absPathOrId, opt_force) {\n    var path = this.getPathFromDeps_(absPathOrId);\n    if (path &&\n        (opt_force || this.areDepsLoaded_(this.dependencies_[path].requires))) {\n      var callback = this.deferredCallbacks_[path];\n      if (callback) {\n        delete this.deferredCallbacks_[path];\n        callback();\n      }\n    }\n  };\n\n\n  /**\n   * Sets the dependency factory, which can be used to create custom\n   * goog.Dependency implementations to control how dependencies are loaded.\n   *\n   * @param {!goog.DependencyFactory} factory\n   */\n  goog.DebugLoader_.prototype.setDependencyFactory = function(factory) {\n    this.factory_ = factory;\n  };\n\n\n  /**\n   * Travserses the dependency graph and queues the given dependency, and all of\n   * its transitive dependencies, for loading and then starts loading if not\n   * paused.\n   *\n   * @param {string} namespace\n   * @private\n   */\n  goog.DebugLoader_.prototype.load_ = function(namespace) {\n    if (!this.getPathFromDeps_(namespace)) {\n      var errorMessage = 'goog.require could not find: ' + namespace;\n\n      goog.logToConsole_(errorMessage);\n      throw Error(errorMessage);\n    } else {\n      var loader = this;\n\n      var deps = [];\n\n      /** @param {string} namespace */\n      var visit = function(namespace) {\n        var path = loader.getPathFromDeps_(namespace);\n\n        if (!path) {\n          throw new Error('Bad dependency path or symbol: ' + namespace);\n        }\n\n        if (loader.written_[path]) {\n          return;\n        }\n\n        loader.written_[path] = true;\n\n        var dep = loader.dependencies_[path];\n        for (var i = 0; i < dep.requires.length; i++) {\n          if (!goog.isProvided_(dep.requires[i])) {\n            visit(dep.requires[i]);\n          }\n        }\n\n        deps.push(dep);\n      };\n\n      visit(namespace);\n\n      var wasLoading = !!this.depsToLoad_.length;\n      this.depsToLoad_ = this.depsToLoad_.concat(deps);\n\n      if (!this.paused_ && !wasLoading) {\n        this.loadDeps_();\n      }\n    }\n  };\n\n\n  /**\n   * Loads any queued dependencies until they are all loaded or paused.\n   *\n   * @private\n   */\n  goog.DebugLoader_.prototype.loadDeps_ = function() {\n    var loader = this;\n    var paused = this.paused_;\n\n    while (this.depsToLoad_.length && !paused) {\n      (function() {\n        var loadCallDone = false;\n        var dep = loader.depsToLoad_.shift();\n\n        var loaded = false;\n        loader.loading_(dep);\n\n        var controller = {\n          pause: function() {\n            if (loadCallDone) {\n              throw new Error('Cannot call pause after the call to load.');\n            } else {\n              paused = true;\n            }\n          },\n          resume: function() {\n            if (loadCallDone) {\n              loader.resume_();\n            } else {\n              // Some dep called pause and then resume in the same load call.\n              // Just keep running this same loop.\n              paused = false;\n            }\n          },\n          loaded: function() {\n            if (loaded) {\n              throw new Error('Double call to loaded.');\n            }\n\n            loaded = true;\n            loader.loaded_(dep);\n          },\n          pending: function() {\n            // Defensive copy.\n            var pending = [];\n            for (var i = 0; i < loader.loadingDeps_.length; i++) {\n              pending.push(loader.loadingDeps_[i]);\n            }\n            return pending;\n          },\n          /**\n           * @param {goog.ModuleType} type\n           */\n          setModuleState: function(type) {\n            goog.moduleLoaderState_ = {\n              type: type,\n              moduleName: '',\n              declareLegacyNamespace: false\n            };\n          },\n          /** @type {function(string, string, string=)} */\n          registerEs6ModuleExports: function(\n              path, exports, opt_closureNamespace) {\n            if (opt_closureNamespace) {\n              goog.loadedModules_[opt_closureNamespace] = {\n                exports: exports,\n                type: goog.ModuleType.ES6,\n                moduleId: opt_closureNamespace || ''\n              };\n            }\n          },\n          /** @type {function(string, ?)} */\n          registerGoogModuleExports: function(moduleId, exports) {\n            goog.loadedModules_[moduleId] = {\n              exports: exports,\n              type: goog.ModuleType.GOOG,\n              moduleId: moduleId\n            };\n          },\n          clearModuleState: function() {\n            goog.moduleLoaderState_ = null;\n          },\n          defer: function(callback) {\n            if (loadCallDone) {\n              throw new Error(\n                  'Cannot register with defer after the call to load.');\n            }\n            loader.defer_(dep, callback);\n          },\n          areDepsLoaded: function() {\n            return loader.areDepsLoaded_(dep.requires);\n          }\n        };\n\n        try {\n          dep.load(controller);\n        } finally {\n          loadCallDone = true;\n        }\n      })();\n    }\n\n    if (paused) {\n      this.pause_();\n    }\n  };\n\n\n  /** @private */\n  goog.DebugLoader_.prototype.pause_ = function() {\n    this.paused_ = true;\n  };\n\n\n  /** @private */\n  goog.DebugLoader_.prototype.resume_ = function() {\n    if (this.paused_) {\n      this.paused_ = false;\n      this.loadDeps_();\n    }\n  };\n\n\n  /**\n   * Marks the given dependency as loading (load has been called but it has not\n   * yet marked itself as finished). Useful for dependencies that want to know\n   * what else is loading. Example: goog.modules cannot eval if there are\n   * loading dependencies.\n   *\n   * @param {!goog.Dependency} dep\n   * @private\n   */\n  goog.DebugLoader_.prototype.loading_ = function(dep) {\n    this.loadingDeps_.push(dep);\n  };\n\n\n  /**\n   * Marks the given dependency as having finished loading and being available\n   * for require.\n   *\n   * @param {!goog.Dependency} dep\n   * @private\n   */\n  goog.DebugLoader_.prototype.loaded_ = function(dep) {\n    for (var i = 0; i < this.loadingDeps_.length; i++) {\n      if (this.loadingDeps_[i] == dep) {\n        this.loadingDeps_.splice(i, 1);\n        break;\n      }\n    }\n\n    for (var i = 0; i < this.deferredQueue_.length; i++) {\n      if (this.deferredQueue_[i] == dep.path) {\n        this.deferredQueue_.splice(i, 1);\n        break;\n      }\n    }\n\n    if (this.loadingDeps_.length == this.deferredQueue_.length &&\n        !this.depsToLoad_.length) {\n      // Something has asked to load these, but they may not be directly\n      // required again later, so load them now that we know we're done loading\n      // everything else. e.g. a goog module entry point.\n      while (this.deferredQueue_.length) {\n        this.requested(this.deferredQueue_.shift(), true);\n      }\n    }\n\n    dep.loaded();\n  };\n\n\n  /**\n   * @param {!Array<string>} pathsOrIds\n   * @return {boolean}\n   * @private\n   */\n  goog.DebugLoader_.prototype.areDepsLoaded_ = function(pathsOrIds) {\n    for (var i = 0; i < pathsOrIds.length; i++) {\n      var path = this.getPathFromDeps_(pathsOrIds[i]);\n      if (!path ||\n          (!(path in this.deferredCallbacks_) &&\n           !goog.isProvided_(pathsOrIds[i]))) {\n        return false;\n      }\n    }\n\n    return true;\n  };\n\n\n  /**\n   * @param {string} absPathOrId\n   * @return {?string}\n   * @private\n   */\n  goog.DebugLoader_.prototype.getPathFromDeps_ = function(absPathOrId) {\n    if (absPathOrId in this.idToPath_) {\n      return this.idToPath_[absPathOrId];\n    } else if (absPathOrId in this.dependencies_) {\n      return absPathOrId;\n    } else {\n      return null;\n    }\n  };\n\n\n  /**\n   * @param {!goog.Dependency} dependency\n   * @param {!Function} callback\n   * @private\n   */\n  goog.DebugLoader_.prototype.defer_ = function(dependency, callback) {\n    this.deferredCallbacks_[dependency.path] = callback;\n    this.deferredQueue_.push(dependency.path);\n  };\n\n\n  /**\n   * Interface for goog.Dependency implementations to have some control over\n   * loading of dependencies.\n   *\n   * @record\n   */\n  goog.LoadController = function() {};\n\n\n  /**\n   * Tells the controller to halt loading of more dependencies.\n   */\n  goog.LoadController.prototype.pause = function() {};\n\n\n  /**\n   * Tells the controller to resume loading of more dependencies if paused.\n   */\n  goog.LoadController.prototype.resume = function() {};\n\n\n  /**\n   * Tells the controller that this dependency has finished loading.\n   *\n   * This causes this to be removed from pending() and any load callbacks to\n   * fire.\n   */\n  goog.LoadController.prototype.loaded = function() {};\n\n\n  /**\n   * List of dependencies on which load has been called but which have not\n   * called loaded on their controller. This includes the current dependency.\n   *\n   * @return {!Array<!goog.Dependency>}\n   */\n  goog.LoadController.prototype.pending = function() {};\n\n\n  /**\n   * Registers an object as an ES6 module's exports so that goog.modules may\n   * require it by path.\n   *\n   * @param {string} path Full path of the module.\n   * @param {?} exports\n   * @param {string=} opt_closureNamespace Closure namespace to associate with\n   *     this module.\n   */\n  goog.LoadController.prototype.registerEs6ModuleExports = function(\n      path, exports, opt_closureNamespace) {};\n\n\n  /**\n   * Sets the current module state.\n   *\n   * @param {goog.ModuleType} type Type of module.\n   */\n  goog.LoadController.prototype.setModuleState = function(type) {};\n\n\n  /**\n   * Clears the current module state.\n   */\n  goog.LoadController.prototype.clearModuleState = function() {};\n\n\n  /**\n   * Registers a callback to call once the dependency is actually requested\n   * via goog.require + all of the immediate dependencies have been loaded or\n   * all other files have been loaded. Allows for lazy loading until\n   * require'd without pausing dependency loading, which is needed on old IE.\n   *\n   * @param {!Function} callback\n   */\n  goog.LoadController.prototype.defer = function(callback) {};\n\n\n  /**\n   * @return {boolean}\n   */\n  goog.LoadController.prototype.areDepsLoaded = function() {};\n\n\n  /**\n   * Basic super class for all dependencies Closure Library can load.\n   *\n   * This default implementation is designed to load untranspiled, non-module\n   * scripts in a web broswer.\n   *\n   * For transpiled non-goog.module files {@see goog.TranspiledDependency}.\n   * For goog.modules see {@see goog.GoogModuleDependency}.\n   * For untranspiled ES6 modules {@see goog.Es6ModuleDependency}.\n   *\n   * @param {string} path Absolute path of this script.\n   * @param {string} relativePath Path of this script relative to goog.basePath.\n   * @param {!Array<string>} provides goog.provided or goog.module symbols\n   *     in this file.\n   * @param {!Array<string>} requires goog symbols or relative paths to Closure\n   *     this depends on.\n   * @param {!Object<string, string>} loadFlags\n   * @struct @constructor\n   */\n  goog.Dependency = function(\n      path, relativePath, provides, requires, loadFlags) {\n    /** @const */\n    this.path = path;\n    /** @const */\n    this.relativePath = relativePath;\n    /** @const */\n    this.provides = provides;\n    /** @const */\n    this.requires = requires;\n    /** @const */\n    this.loadFlags = loadFlags;\n    /** @private {boolean} */\n    this.loaded_ = false;\n    /** @private {!Array<function()>} */\n    this.loadCallbacks_ = [];\n  };\n\n\n  /**\n   * @return {string} The pathname part of this dependency's path if it is a\n   *     URI.\n   */\n  goog.Dependency.prototype.getPathName = function() {\n    var pathName = this.path;\n    var protocolIndex = pathName.indexOf('://');\n    if (protocolIndex >= 0) {\n      pathName = pathName.substring(protocolIndex + 3);\n      var slashIndex = pathName.indexOf('/');\n      if (slashIndex >= 0) {\n        pathName = pathName.substring(slashIndex + 1);\n      }\n    }\n    return pathName;\n  };\n\n\n  /**\n   * @param {function()} callback Callback to fire as soon as this has loaded.\n   * @final\n   */\n  goog.Dependency.prototype.onLoad = function(callback) {\n    if (this.loaded_) {\n      callback();\n    } else {\n      this.loadCallbacks_.push(callback);\n    }\n  };\n\n\n  /**\n   * Marks this dependency as loaded and fires any callbacks registered with\n   * onLoad.\n   * @final\n   */\n  goog.Dependency.prototype.loaded = function() {\n    this.loaded_ = true;\n    var callbacks = this.loadCallbacks_;\n    this.loadCallbacks_ = [];\n    for (var i = 0; i < callbacks.length; i++) {\n      callbacks[i]();\n    }\n  };\n\n\n  /**\n   * Whether or not document.written / appended script tags should be deferred.\n   *\n   * @private {boolean}\n   */\n  goog.Dependency.defer_ = false;\n\n\n  /**\n   * Map of script ready / state change callbacks. Old IE cannot handle putting\n   * these properties on goog.global.\n   *\n   * @private @const {!Object<string, function(?):undefined>}\n   */\n  goog.Dependency.callbackMap_ = {};\n\n\n  /**\n   * @param {function(...?):?} callback\n   * @return {string}\n   * @private\n   */\n  goog.Dependency.registerCallback_ = function(callback) {\n    var key = Math.random().toString(32);\n    goog.Dependency.callbackMap_[key] = callback;\n    return key;\n  };\n\n\n  /**\n   * @param {string} key\n   * @private\n   */\n  goog.Dependency.unregisterCallback_ = function(key) {\n    delete goog.Dependency.callbackMap_[key];\n  };\n\n\n  /**\n   * @param {string} key\n   * @param {...?} var_args\n   * @private\n   * @suppress {unusedPrivateMembers}\n   */\n  goog.Dependency.callback_ = function(key, var_args) {\n    if (key in goog.Dependency.callbackMap_) {\n      var callback = goog.Dependency.callbackMap_[key];\n      var args = [];\n      for (var i = 1; i < arguments.length; i++) {\n        args.push(arguments[i]);\n      }\n      callback.apply(undefined, args);\n    } else {\n      var errorMessage = 'Callback key ' + key +\n          ' does not exist (was base.js loaded more than once?).';\n      throw Error(errorMessage);\n    }\n  };\n\n\n  /**\n   * Starts loading this dependency. This dependency can pause loading if it\n   * needs to and resume it later via the controller interface.\n   *\n   * When this is loaded it should call controller.loaded(). Note that this will\n   * end up calling the loaded method of this dependency; there is no need to\n   * call it explicitly.\n   *\n   * @param {!goog.LoadController} controller\n   */\n  goog.Dependency.prototype.load = function(controller) {\n    if (goog.global.CLOSURE_IMPORT_SCRIPT) {\n      if (goog.global.CLOSURE_IMPORT_SCRIPT(this.path)) {\n        controller.loaded();\n      } else {\n        controller.pause();\n      }\n      return;\n    }\n\n    if (!goog.inHtmlDocument_()) {\n      goog.logToConsole_(\n          'Cannot use default debug loader outside of HTML documents.');\n      if (this.relativePath == 'deps.js') {\n        // Some old code is relying on base.js auto loading deps.js failing with\n        // no error before later setting CLOSURE_IMPORT_SCRIPT.\n        // CLOSURE_IMPORT_SCRIPT should be set *before* base.js is loaded, or\n        // CLOSURE_NO_DEPS set to true.\n        goog.logToConsole_(\n            'Consider setting CLOSURE_IMPORT_SCRIPT before loading base.js, ' +\n            'or setting CLOSURE_NO_DEPS to true.');\n        controller.loaded();\n      } else {\n        controller.pause();\n      }\n      return;\n    }\n\n    /** @type {!HTMLDocument} */\n    var doc = goog.global.document;\n\n    // If the user tries to require a new symbol after document load,\n    // something has gone terribly wrong. Doing a document.write would\n    // wipe out the page. This does not apply to the CSP-compliant method\n    // of writing script tags.\n    if (doc.readyState == 'complete' &&\n        !goog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING) {\n      // Certain test frameworks load base.js multiple times, which tries\n      // to write deps.js each time. If that happens, just fail silently.\n      // These frameworks wipe the page between each load of base.js, so this\n      // is OK.\n      var isDeps = /\\bdeps.js$/.test(this.path);\n      if (isDeps) {\n        controller.loaded();\n        return;\n      } else {\n        throw Error('Cannot write \"' + this.path + '\" after document load');\n      }\n    }\n\n    var nonce = goog.getScriptNonce();\n    if (!goog.ENABLE_CHROME_APP_SAFE_SCRIPT_LOADING &&\n        goog.isDocumentLoading_()) {\n      var allowInlineEventHandlers = !nonce;\n      var key = goog.Dependency.registerCallback_(function(script) {\n        if (!goog.DebugLoader_.IS_OLD_IE_ || script.readyState == 'complete') {\n          goog.Dependency.unregisterCallback_(key);\n          controller.loaded();\n        }\n      });\n      var eventName =\n          goog.DebugLoader_.IS_OLD_IE_ ? 'onreadystatechange' : 'onload';\n      var event = '';\n      if (allowInlineEventHandlers) {\n        event = ' ' + eventName + '=\"goog.Dependency.callback_(\\'' + key +\n            '\\', this)\"';\n      }\n\n      var defer = goog.Dependency.defer_ ? ' defer' : '';\n      var nonceAttr = nonce ? ' nonce=\"' + nonce + '\"' : '';\n      var script = '<script src=\"' + this.path + '\"' + nonceAttr + event +\n          defer + '><\\/script>';\n\n      doc.write(\n          goog.TRUSTED_TYPES_POLICY_ ?\n              goog.TRUSTED_TYPES_POLICY_.createHTML(script) :\n              script);\n\n      if (!allowInlineEventHandlers) {\n        var elem = goog.getLastScript_();\n        elem.onload = /** @this {!HTMLScriptElement} */ function() {\n          goog.Dependency.callback_(key, this);\n        };\n      }\n    } else {\n      var scriptEl =\n          /** @type {!HTMLScriptElement} */ (doc.createElement('script'));\n      scriptEl.defer = goog.Dependency.defer_;\n      scriptEl.async = false;\n      scriptEl.type = 'text/javascript';\n\n      // If CSP nonces are used, propagate them to dynamically created scripts.\n      // This is necessary to allow nonce-based CSPs without 'strict-dynamic'.\n      if (nonce) {\n        scriptEl.setAttribute('nonce', nonce);\n      }\n\n      if (goog.DebugLoader_.IS_OLD_IE_) {\n        // Execution order is not guaranteed on old IE, halt loading and write\n        // these scripts one at a time, after each loads.\n        controller.pause();\n        scriptEl.onreadystatechange = function() {\n          if (scriptEl.readyState == 'loaded' ||\n              scriptEl.readyState == 'complete') {\n            controller.loaded();\n            controller.resume();\n          }\n        };\n      } else {\n        scriptEl.onload = function() {\n          scriptEl.onload = null;\n          controller.loaded();\n        };\n      }\n\n      scriptEl.src = goog.TRUSTED_TYPES_POLICY_ ?\n          goog.TRUSTED_TYPES_POLICY_.createScriptURL(this.path) :\n          this.path;\n      doc.head.appendChild(scriptEl);\n    }\n  };\n\n\n  /**\n   * @param {string} path Absolute path of this script.\n   * @param {string} relativePath Path of this script relative to goog.basePath.\n   * @param {!Array<string>} provides Should be an empty array.\n   *     TODO(johnplaisted) add support for adding closure namespaces to ES6\n   *     modules for interop purposes.\n   * @param {!Array<string>} requires goog symbols or relative paths to Closure\n   *     this depends on.\n   * @param {!Object<string, string>} loadFlags\n   * @struct @constructor\n   * @extends {goog.Dependency}\n   */\n  goog.Es6ModuleDependency = function(\n      path, relativePath, provides, requires, loadFlags) {\n    goog.Es6ModuleDependency.base(\n        this, 'constructor', path, relativePath, provides, requires, loadFlags);\n  };\n  goog.inherits(goog.Es6ModuleDependency, goog.Dependency);\n\n\n  /** @override */\n  goog.Es6ModuleDependency.prototype.load = function(controller) {\n    if (goog.global.CLOSURE_IMPORT_SCRIPT) {\n      if (goog.global.CLOSURE_IMPORT_SCRIPT(this.path)) {\n        controller.loaded();\n      } else {\n        controller.pause();\n      }\n      return;\n    }\n\n    if (!goog.inHtmlDocument_()) {\n      goog.logToConsole_(\n          'Cannot use default debug loader outside of HTML documents.');\n      controller.pause();\n      return;\n    }\n\n    /** @type {!HTMLDocument} */\n    var doc = goog.global.document;\n\n    var dep = this;\n\n    // TODO(johnplaisted): Does document.writing really speed up anything? Any\n    // difference between this and just waiting for interactive mode and then\n    // appending?\n    function write(src, contents) {\n      if (contents) {\n        var script = '<script type=\"module\" crossorigin>' + contents + '</' +\n            'script>';\n        doc.write(\n            goog.TRUSTED_TYPES_POLICY_ ?\n                goog.TRUSTED_TYPES_POLICY_.createHTML(script) :\n                script);\n      } else {\n        var script = '<script type=\"module\" crossorigin src=\"' + src + '\"></' +\n            'script>';\n        doc.write(\n            goog.TRUSTED_TYPES_POLICY_ ?\n                goog.TRUSTED_TYPES_POLICY_.createHTML(script) :\n                script);\n      }\n    }\n\n    function append(src, contents) {\n      var scriptEl =\n          /** @type {!HTMLScriptElement} */ (doc.createElement('script'));\n      scriptEl.defer = true;\n      scriptEl.async = false;\n      scriptEl.type = 'module';\n      scriptEl.setAttribute('crossorigin', true);\n\n      // If CSP nonces are used, propagate them to dynamically created scripts.\n      // This is necessary to allow nonce-based CSPs without 'strict-dynamic'.\n      var nonce = goog.getScriptNonce();\n      if (nonce) {\n        scriptEl.setAttribute('nonce', nonce);\n      }\n\n      if (contents) {\n        scriptEl.textContent = goog.TRUSTED_TYPES_POLICY_ ?\n            goog.TRUSTED_TYPES_POLICY_.createScript(contents) :\n            contents;\n      } else {\n        scriptEl.src = goog.TRUSTED_TYPES_POLICY_ ?\n            goog.TRUSTED_TYPES_POLICY_.createScriptURL(src) :\n            src;\n      }\n\n      doc.head.appendChild(scriptEl);\n    }\n\n    var create;\n\n    if (goog.isDocumentLoading_()) {\n      create = write;\n      // We can ONLY call document.write if we are guaranteed that any\n      // non-module script tags document.written after this are deferred.\n      // Small optimization, in theory document.writing is faster.\n      goog.Dependency.defer_ = true;\n    } else {\n      create = append;\n    }\n\n    // Write 4 separate tags here:\n    // 1) Sets the module state at the correct time (just before execution).\n    // 2) A src node for this, which just hopefully lets the browser load it a\n    //    little early (no need to parse #3).\n    // 3) Import the module and register it.\n    // 4) Clear the module state at the correct time. Guaranteed to run even\n    //    if there is an error in the module (#3 will not run if there is an\n    //    error in the module).\n    var beforeKey = goog.Dependency.registerCallback_(function() {\n      goog.Dependency.unregisterCallback_(beforeKey);\n      controller.setModuleState(goog.ModuleType.ES6);\n    });\n    create(undefined, 'goog.Dependency.callback_(\"' + beforeKey + '\")');\n\n    // TODO(johnplaisted): Does this really speed up anything?\n    create(this.path, undefined);\n\n    var registerKey = goog.Dependency.registerCallback_(function(exports) {\n      goog.Dependency.unregisterCallback_(registerKey);\n      controller.registerEs6ModuleExports(\n          dep.path, exports, goog.moduleLoaderState_.moduleName);\n    });\n    create(\n        undefined,\n        'import * as m from \"' + this.path + '\"; goog.Dependency.callback_(\"' +\n            registerKey + '\", m)');\n\n    var afterKey = goog.Dependency.registerCallback_(function() {\n      goog.Dependency.unregisterCallback_(afterKey);\n      controller.clearModuleState();\n      controller.loaded();\n    });\n    create(undefined, 'goog.Dependency.callback_(\"' + afterKey + '\")');\n  };\n\n\n  /**\n   * Superclass of any dependency that needs to be loaded into memory,\n   * transformed, and then eval'd (goog.modules and transpiled files).\n   *\n   * @param {string} path Absolute path of this script.\n   * @param {string} relativePath Path of this script relative to goog.basePath.\n   * @param {!Array<string>} provides goog.provided or goog.module symbols\n   *     in this file.\n   * @param {!Array<string>} requires goog symbols or relative paths to Closure\n   *     this depends on.\n   * @param {!Object<string, string>} loadFlags\n   * @struct @constructor @abstract\n   * @extends {goog.Dependency}\n   */\n  goog.TransformedDependency = function(\n      path, relativePath, provides, requires, loadFlags) {\n    goog.TransformedDependency.base(\n        this, 'constructor', path, relativePath, provides, requires, loadFlags);\n    /** @private {?string} */\n    this.contents_ = null;\n\n    /**\n     * Whether to lazily make the synchronous XHR (when goog.require'd) or make\n     * the synchronous XHR when initially loading. On FireFox 61 there is a bug\n     * where an ES6 module cannot make a synchronous XHR (rather, it can, but if\n     * it does then no other ES6 modules will load after).\n     *\n     * tl;dr we lazy load due to bugs on older browsers and eager load due to\n     * bugs on newer ones.\n     *\n     * https://bugzilla.mozilla.org/show_bug.cgi?id=1477090\n     *\n     * @private @const {boolean}\n     */\n    this.lazyFetch_ = !goog.inHtmlDocument_() ||\n        !('noModule' in goog.global.document.createElement('script'));\n  };\n  goog.inherits(goog.TransformedDependency, goog.Dependency);\n\n\n  /** @override */\n  goog.TransformedDependency.prototype.load = function(controller) {\n    var dep = this;\n\n    function fetch() {\n      dep.contents_ = goog.loadFileSync_(dep.path);\n\n      if (dep.contents_) {\n        dep.contents_ = dep.transform(dep.contents_);\n        if (dep.contents_) {\n          dep.contents_ += '\\n//# sourceURL=' + dep.path;\n        }\n      }\n    }\n\n    if (goog.global.CLOSURE_IMPORT_SCRIPT) {\n      fetch();\n      if (this.contents_ &&\n          goog.global.CLOSURE_IMPORT_SCRIPT('', this.contents_)) {\n        this.contents_ = null;\n        controller.loaded();\n      } else {\n        controller.pause();\n      }\n      return;\n    }\n\n\n    var isEs6 = this.loadFlags['module'] == goog.ModuleType.ES6;\n\n    if (!this.lazyFetch_) {\n      fetch();\n    }\n\n    function load() {\n      if (dep.lazyFetch_) {\n        fetch();\n      }\n\n      if (!dep.contents_) {\n        // loadFileSync_ or transform are responsible. Assume they logged an\n        // error.\n        return;\n      }\n\n      if (isEs6) {\n        controller.setModuleState(goog.ModuleType.ES6);\n      }\n\n      var namespace;\n\n      try {\n        var contents = dep.contents_;\n        dep.contents_ = null;\n        goog.globalEval(contents);\n        if (isEs6) {\n          namespace = goog.moduleLoaderState_.moduleName;\n        }\n      } finally {\n        if (isEs6) {\n          controller.clearModuleState();\n        }\n      }\n\n      if (isEs6) {\n        // Due to circular dependencies this may not be available for require\n        // right now.\n        goog.global['$jscomp']['require']['ensure'](\n            [dep.getPathName()], function() {\n              controller.registerEs6ModuleExports(\n                  dep.path,\n                  goog.global['$jscomp']['require'](dep.getPathName()),\n                  namespace);\n            });\n      }\n\n      controller.loaded();\n    }\n\n    // Do not fetch now; in FireFox 47 the synchronous XHR doesn't block all\n    // events. If we fetched now and then document.write'd the contents the\n    // document.write would be an eval and would execute too soon! Instead write\n    // a script tag to fetch and eval synchronously at the correct time.\n    function fetchInOwnScriptThenLoad() {\n      /** @type {!HTMLDocument} */\n      var doc = goog.global.document;\n\n      var key = goog.Dependency.registerCallback_(function() {\n        goog.Dependency.unregisterCallback_(key);\n        load();\n      });\n\n      var nonce = goog.getScriptNonce();\n      var nonceAttr = nonce ? ' nonce=\"' + nonce + '\"' : '';\n      var script = '<script' + nonceAttr + '>' +\n          goog.protectScriptTag_('goog.Dependency.callback_(\"' + key + '\");') +\n          '</' +\n          'script>';\n      doc.write(\n          goog.TRUSTED_TYPES_POLICY_ ?\n              goog.TRUSTED_TYPES_POLICY_.createHTML(script) :\n              script);\n    }\n\n    // If one thing is pending it is this.\n    var anythingElsePending = controller.pending().length > 1;\n\n    // If anything else is loading we need to lazy load due to bugs in old IE.\n    // Specifically script tags with src and script tags with contents could\n    // execute out of order if document.write is used, so we cannot use\n    // document.write. Do not pause here; it breaks old IE as well.\n    var useOldIeWorkAround =\n        anythingElsePending && goog.DebugLoader_.IS_OLD_IE_;\n\n    // Additionally if we are meant to defer scripts but the page is still\n    // loading (e.g. an ES6 module is loading) then also defer. Or if we are\n    // meant to defer and anything else is pending then defer (those may be\n    // scripts that did not need transformation and are just script tags with\n    // defer set to true, and we need to evaluate after that deferred script).\n    var needsAsyncLoading = goog.Dependency.defer_ &&\n        (anythingElsePending || goog.isDocumentLoading_());\n\n    if (useOldIeWorkAround || needsAsyncLoading) {\n      // Note that we only defer when we have to rather than 100% of the time.\n      // Always defering would work, but then in theory the order of\n      // goog.require calls would then matter. We want to enforce that most of\n      // the time the order of the require calls does not matter.\n      controller.defer(function() {\n        load();\n      });\n      return;\n    }\n    // TODO(johnplaisted): Externs are missing onreadystatechange for\n    // HTMLDocument.\n    /** @type {?} */\n    var doc = goog.global.document;\n\n    var isInternetExplorer =\n        goog.inHtmlDocument_() && 'ActiveXObject' in goog.global;\n\n    // Don't delay in any version of IE. There's bug around this that will\n    // cause out of order script execution. This means that on older IE ES6\n    // modules will load too early (while the document is still loading + the\n    // dom is not available). The other option is to load too late (when the\n    // document is complete and the onload even will never fire). This seems\n    // to be the lesser of two evils as scripts already act like the former.\n    if (isEs6 && goog.inHtmlDocument_() && goog.isDocumentLoading_() &&\n        !isInternetExplorer) {\n      goog.Dependency.defer_ = true;\n      // Transpiled ES6 modules still need to load like regular ES6 modules,\n      // aka only after the document is interactive.\n      controller.pause();\n      var oldCallback = doc.onreadystatechange;\n      doc.onreadystatechange = function() {\n        if (doc.readyState == 'interactive') {\n          doc.onreadystatechange = oldCallback;\n          load();\n          controller.resume();\n        }\n        if (goog.isFunction(oldCallback)) {\n          oldCallback.apply(undefined, arguments);\n        }\n      };\n    } else {\n      // Always eval on old IE.\n      if (goog.DebugLoader_.IS_OLD_IE_ || !goog.inHtmlDocument_() ||\n          !goog.isDocumentLoading_()) {\n        load();\n      } else {\n        fetchInOwnScriptThenLoad();\n      }\n    }\n  };\n\n\n  /**\n   * @param {string} contents\n   * @return {string}\n   * @abstract\n   */\n  goog.TransformedDependency.prototype.transform = function(contents) {};\n\n\n  /**\n   * Any non-goog.module dependency which needs to be transpiled before eval.\n   *\n   * @param {string} path Absolute path of this script.\n   * @param {string} relativePath Path of this script relative to goog.basePath.\n   * @param {!Array<string>} provides goog.provided or goog.module symbols\n   *     in this file.\n   * @param {!Array<string>} requires goog symbols or relative paths to Closure\n   *     this depends on.\n   * @param {!Object<string, string>} loadFlags\n   * @param {!goog.Transpiler} transpiler\n   * @struct @constructor\n   * @extends {goog.TransformedDependency}\n   */\n  goog.TranspiledDependency = function(\n      path, relativePath, provides, requires, loadFlags, transpiler) {\n    goog.TranspiledDependency.base(\n        this, 'constructor', path, relativePath, provides, requires, loadFlags);\n    /** @protected @const*/\n    this.transpiler = transpiler;\n  };\n  goog.inherits(goog.TranspiledDependency, goog.TransformedDependency);\n\n\n  /** @override */\n  goog.TranspiledDependency.prototype.transform = function(contents) {\n    // Transpile with the pathname so that ES6 modules are domain agnostic.\n    return this.transpiler.transpile(contents, this.getPathName());\n  };\n\n\n  /**\n   * An ES6 module dependency that was transpiled to a jscomp module outside\n   * of the debug loader, e.g. server side.\n   *\n   * @param {string} path Absolute path of this script.\n   * @param {string} relativePath Path of this script relative to goog.basePath.\n   * @param {!Array<string>} provides goog.provided or goog.module symbols\n   *     in this file.\n   * @param {!Array<string>} requires goog symbols or relative paths to Closure\n   *     this depends on.\n   * @param {!Object<string, string>} loadFlags\n   * @struct @constructor\n   * @extends {goog.TransformedDependency}\n   */\n  goog.PreTranspiledEs6ModuleDependency = function(\n      path, relativePath, provides, requires, loadFlags) {\n    goog.PreTranspiledEs6ModuleDependency.base(\n        this, 'constructor', path, relativePath, provides, requires, loadFlags);\n  };\n  goog.inherits(\n      goog.PreTranspiledEs6ModuleDependency, goog.TransformedDependency);\n\n\n  /** @override */\n  goog.PreTranspiledEs6ModuleDependency.prototype.transform = function(\n      contents) {\n    return contents;\n  };\n\n\n  /**\n   * A goog.module, transpiled or not. Will always perform some minimal\n   * transformation even when not transpiled to wrap in a goog.loadModule\n   * statement.\n   *\n   * @param {string} path Absolute path of this script.\n   * @param {string} relativePath Path of this script relative to goog.basePath.\n   * @param {!Array<string>} provides goog.provided or goog.module symbols\n   *     in this file.\n   * @param {!Array<string>} requires goog symbols or relative paths to Closure\n   *     this depends on.\n   * @param {!Object<string, string>} loadFlags\n   * @param {boolean} needsTranspile\n   * @param {!goog.Transpiler} transpiler\n   * @struct @constructor\n   * @extends {goog.TransformedDependency}\n   */\n  goog.GoogModuleDependency = function(\n      path, relativePath, provides, requires, loadFlags, needsTranspile,\n      transpiler) {\n    goog.GoogModuleDependency.base(\n        this, 'constructor', path, relativePath, provides, requires, loadFlags);\n    /** @private @const */\n    this.needsTranspile_ = needsTranspile;\n    /** @private @const */\n    this.transpiler_ = transpiler;\n  };\n  goog.inherits(goog.GoogModuleDependency, goog.TransformedDependency);\n\n\n  /** @override */\n  goog.GoogModuleDependency.prototype.transform = function(contents) {\n    if (this.needsTranspile_) {\n      contents = this.transpiler_.transpile(contents, this.getPathName());\n    }\n\n    if (!goog.LOAD_MODULE_USING_EVAL || goog.global.JSON === undefined) {\n      return '' +\n          'goog.loadModule(function(exports) {' +\n          '\"use strict\";' + contents +\n          '\\n' +  // terminate any trailing single line comment.\n          ';return exports' +\n          '});' +\n          '\\n//# sourceURL=' + this.path + '\\n';\n    } else {\n      return '' +\n          'goog.loadModule(' +\n          goog.global.JSON.stringify(\n              contents + '\\n//# sourceURL=' + this.path + '\\n') +\n          ');';\n    }\n  };\n\n\n  /**\n   * Whether the browser is IE9 or earlier, which needs special handling\n   * for deferred modules.\n   * @const @private {boolean}\n   */\n  goog.DebugLoader_.IS_OLD_IE_ = !!(\n      !goog.global.atob && goog.global.document && goog.global.document['all']);\n\n\n  /**\n   * @param {string} relPath\n   * @param {!Array<string>|undefined} provides\n   * @param {!Array<string>} requires\n   * @param {boolean|!Object<string>=} opt_loadFlags\n   * @see goog.addDependency\n   */\n  goog.DebugLoader_.prototype.addDependency = function(\n      relPath, provides, requires, opt_loadFlags) {\n    provides = provides || [];\n    relPath = relPath.replace(/\\\\/g, '/');\n    var path = goog.normalizePath_(goog.basePath + relPath);\n    if (!opt_loadFlags || typeof opt_loadFlags === 'boolean') {\n      opt_loadFlags = opt_loadFlags ? {'module': goog.ModuleType.GOOG} : {};\n    }\n    var dep = this.factory_.createDependency(\n        path, relPath, provides, requires, opt_loadFlags,\n        goog.transpiler_.needsTranspile(\n            opt_loadFlags['lang'] || 'es3', opt_loadFlags['module']));\n    this.dependencies_[path] = dep;\n    for (var i = 0; i < provides.length; i++) {\n      this.idToPath_[provides[i]] = path;\n    }\n    this.idToPath_[relPath] = path;\n  };\n\n\n  /**\n   * Creates goog.Dependency instances for the debug loader to load.\n   *\n   * Should be overridden to have the debug loader use custom subclasses of\n   * goog.Dependency.\n   *\n   * @param {!goog.Transpiler} transpiler\n   * @struct @constructor\n   */\n  goog.DependencyFactory = function(transpiler) {\n    /** @protected @const */\n    this.transpiler = transpiler;\n  };\n\n\n  /**\n   * @param {string} path Absolute path of the file.\n   * @param {string} relativePath Path relative to closure’s base.js.\n   * @param {!Array<string>} provides Array of provided goog.provide/module ids.\n   * @param {!Array<string>} requires Array of required goog.provide/module /\n   *     relative ES6 module paths.\n   * @param {!Object<string, string>} loadFlags\n   * @param {boolean} needsTranspile True if the file needs to be transpiled\n   *     per the goog.Transpiler.\n   * @return {!goog.Dependency}\n   */\n  goog.DependencyFactory.prototype.createDependency = function(\n      path, relativePath, provides, requires, loadFlags, needsTranspile) {\n\n    if (loadFlags['module'] == goog.ModuleType.GOOG) {\n      return new goog.GoogModuleDependency(\n          path, relativePath, provides, requires, loadFlags, needsTranspile,\n          this.transpiler);\n    } else if (needsTranspile) {\n      return new goog.TranspiledDependency(\n          path, relativePath, provides, requires, loadFlags, this.transpiler);\n    } else {\n      if (loadFlags['module'] == goog.ModuleType.ES6) {\n        if (goog.TRANSPILE == 'never' && goog.ASSUME_ES_MODULES_TRANSPILED) {\n          return new goog.PreTranspiledEs6ModuleDependency(\n              path, relativePath, provides, requires, loadFlags);\n        } else {\n          return new goog.Es6ModuleDependency(\n              path, relativePath, provides, requires, loadFlags);\n        }\n      } else {\n        return new goog.Dependency(\n            path, relativePath, provides, requires, loadFlags);\n      }\n    }\n  };\n\n\n  /** @private @const */\n  goog.debugLoader_ = new goog.DebugLoader_();\n\n\n  /**\n   * Loads the Closure Dependency file.\n   *\n   * Exposed a public function so CLOSURE_NO_DEPS can be set to false, base\n   * loaded, setDependencyFactory called, and then this called. i.e. allows\n   * custom loading of the deps file.\n   */\n  goog.loadClosureDeps = function() {\n    goog.debugLoader_.loadClosureDeps();\n  };\n\n\n  /**\n   * Sets the dependency factory, which can be used to create custom\n   * goog.Dependency implementations to control how dependencies are loaded.\n   *\n   * Note: if you wish to call this function and provide your own implemnetation\n   * it is a wise idea to set CLOSURE_NO_DEPS to true, otherwise the dependency\n   * file and all of its goog.addDependency calls will use the default factory.\n   * You can call goog.loadClosureDeps to load the Closure dependency file\n   * later, after your factory is injected.\n   *\n   * @param {!goog.DependencyFactory} factory\n   */\n  goog.setDependencyFactory = function(factory) {\n    goog.debugLoader_.setDependencyFactory(factory);\n  };\n\n\n  /**\n   * Trusted Types policy for the debug loader.\n   * @private @const {?TrustedTypePolicy}\n   */\n  goog.TRUSTED_TYPES_POLICY_ = goog.TRUSTED_TYPES_POLICY_NAME ?\n      goog.createTrustedTypesPolicy(goog.TRUSTED_TYPES_POLICY_NAME + '#base') :\n      null;\n\n  if (!goog.global.CLOSURE_NO_DEPS) {\n    goog.debugLoader_.loadClosureDeps();\n  }\n\n\n  /**\n   * Bootstraps the given namespaces and calls the callback once they are\n   * available either via goog.require. This is a replacement for using\n   * `goog.require` to bootstrap Closure JavaScript. Previously a `goog.require`\n   * in an HTML file would guarantee that the require'd namespace was available\n   * in the next immediate script tag. With ES6 modules this no longer a\n   * guarantee.\n   *\n   * @param {!Array<string>} namespaces\n   * @param {function(): ?} callback Function to call once all the namespaces\n   *     have loaded. Always called asynchronously.\n   */\n  goog.bootstrap = function(namespaces, callback) {\n    goog.debugLoader_.bootstrap(namespaces, callback);\n  };\n}\n\n\n/**\n * @define {string} Trusted Types policy name. If non-empty then Closure will\n * use Trusted Types.\n */\ngoog.TRUSTED_TYPES_POLICY_NAME =\n    goog.define('goog.TRUSTED_TYPES_POLICY_NAME', 'goog');\n\n\n/**\n * Returns the parameter.\n * @param {string} s\n * @return {string}\n * @private\n */\ngoog.identity_ = function(s) {\n  return s;\n};\n\n\n/**\n * Creates Trusted Types policy if Trusted Types are supported by the browser.\n * The policy just blesses any string as a Trusted Type. It is not visibility\n * restricted because anyone can also call trustedTypes.createPolicy directly.\n * However, the allowed names should be restricted by a HTTP header and the\n * reference to the created policy should be visibility restricted.\n * @param {string} name\n * @return {?TrustedTypePolicy}\n */\ngoog.createTrustedTypesPolicy = function(name) {\n  var policy = null;\n  var policyFactory = goog.global.trustedTypes;\n  if (!policyFactory || !policyFactory.createPolicy) {\n    return policy;\n  }\n  // trustedTypes.createPolicy throws if called with a name that is already\n  // registered, even in report-only mode. Until the API changes, catch the\n  // error not to break the applications functionally. In such case, the code\n  // will fall back to using regular Safe Types.\n  // TODO(koto): Remove catching once createPolicy API stops throwing.\n  try {\n    policy = policyFactory.createPolicy(name, {\n      createHTML: goog.identity_,\n      createScript: goog.identity_,\n      createScriptURL: goog.identity_\n    });\n  } catch (e) {\n    goog.logToConsole_(e.message);\n  }\n  return policy;\n};\n",null,null,null,null,null,null,"/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines developer-visible errors for Firebase Auth APIs.\n */\n\n\ngoog.provide('fireauth.AuthError');\ngoog.provide('fireauth.authenum');\ngoog.provide('fireauth.authenum.Error');\n\n\n\n/**\n * Error that can be returned to the developer.\n * @param {!fireauth.authenum.Error} code The short error code.\n * @param {?string=} message The human-readable message.\n * @param {?Object=} serverResponse The raw server response.\n * @constructor\n * @extends {Error}\n */\nfireauth.AuthError = function(code, message, serverResponse) {\n  this['code'] = fireauth.AuthError.ERROR_CODE_PREFIX + code;\n  this.message = message || fireauth.AuthError.MESSAGES_[code] || '';\n  this.serverResponse = serverResponse || null;\n};\ngoog.inherits(fireauth.AuthError, Error);\n\n\n/**\n * @return {!Object} The plain object form of the error.\n */\nfireauth.AuthError.prototype.toPlainObject = function() {\n  var obj = {\n    'code': this['code'],\n    'message': this.message\n  };\n  if (this.serverResponse) {\n    obj['serverResponse'] = this.serverResponse;\n  }\n  return obj;\n};\n\n\n/**\n * @return {!Object} The plain object form of the error. This is used by\n *     JSON.toStringify() to return the stringified representation of the error;\n * @override\n */\nfireauth.AuthError.prototype.toJSON = function() {\n  // Return the plain object representation in case JSON.stringify is called on\n  // an auth error instance.\n  return this.toPlainObject();\n};\n\n\n/**\n * @param {?Object|undefined} response The object response to convert to a\n *     fireauth.AuthError.\n * @return {?fireauth.AuthError} The error representation of the response.\n */\nfireauth.AuthError.fromPlainObject = function(response) {\n  var fullCode = response && response['code'];\n  if (fullCode) {\n    // Remove prefix from name.\n    var code = fullCode.substring(\n        fireauth.AuthError.ERROR_CODE_PREFIX.length);\n    return new fireauth.AuthError(\n        /** @type {!fireauth.authenum.Error} */ (code),\n        response['message'],\n        response['serverResponse']);\n  }\n  return null;\n};\n\n\n/**\n * Takes in an error and translates a specific error code to another one if\n * found in the current error.\n * @param {*} error The error thrown.\n * @param {!fireauth.authenum.Error} fromCode The error code to translate from.\n * @param {!fireauth.authenum.Error} toCode The error code to translate to.\n * @return {*} The mapped error message.\n */\nfireauth.AuthError.translateError = function(error, fromCode, toCode) {\n  if (error &&\n      error['code'] &&\n      error['code'] == fireauth.AuthError.ERROR_CODE_PREFIX + fromCode) {\n    // Translate the error to the new one.\n    return new fireauth.AuthError(toCode);\n  }\n  // Return the same error if the fromCode is not found.\n  return error;\n};\n\n\n/**\n * The error prefix for fireauth.Auth errors.\n * @protected {string}\n */\nfireauth.AuthError.ERROR_CODE_PREFIX = 'auth/';\n\n\n/**\n * Developer facing Firebase Auth error codes.\n * @enum {string}\n */\nfireauth.authenum.Error = {\n  ADMIN_ONLY_OPERATION: 'admin-restricted-operation',\n  ARGUMENT_ERROR: 'argument-error',\n  APP_NOT_AUTHORIZED: 'app-not-authorized',\n  APP_NOT_INSTALLED: 'app-not-installed',\n  CAPTCHA_CHECK_FAILED: 'captcha-check-failed',\n  CODE_EXPIRED: 'code-expired',\n  CORDOVA_NOT_READY: 'cordova-not-ready',\n  CORS_UNSUPPORTED: 'cors-unsupported',\n  CREDENTIAL_ALREADY_IN_USE: 'credential-already-in-use',\n  CREDENTIAL_MISMATCH: 'custom-token-mismatch',\n  CREDENTIAL_TOO_OLD_LOGIN_AGAIN: 'requires-recent-login',\n  DYNAMIC_LINK_NOT_ACTIVATED: 'dynamic-link-not-activated',\n  EMAIL_CHANGE_NEEDS_VERIFICATION: 'email-change-needs-verification',\n  EMAIL_EXISTS: 'email-already-in-use',\n  EXPIRED_OOB_CODE: 'expired-action-code',\n  EXPIRED_POPUP_REQUEST: 'cancelled-popup-request',\n  INTERNAL_ERROR: 'internal-error',\n  INVALID_API_KEY: 'invalid-api-key',\n  INVALID_APP_CREDENTIAL: 'invalid-app-credential',\n  INVALID_APP_ID: 'invalid-app-id',\n  INVALID_AUTH: 'invalid-user-token',\n  INVALID_AUTH_EVENT: 'invalid-auth-event',\n  INVALID_CERT_HASH: 'invalid-cert-hash',\n  INVALID_CODE: 'invalid-verification-code',\n  INVALID_CONTINUE_URI: 'invalid-continue-uri',\n  INVALID_CORDOVA_CONFIGURATION: 'invalid-cordova-configuration',\n  INVALID_CUSTOM_TOKEN: 'invalid-custom-token',\n  INVALID_DYNAMIC_LINK_DOMAIN: 'invalid-dynamic-link-domain',\n  INVALID_EMAIL: 'invalid-email',\n  INVALID_IDP_RESPONSE: 'invalid-credential',\n  INVALID_MESSAGE_PAYLOAD: 'invalid-message-payload',\n  INVALID_MFA_PENDING_CREDENTIAL: 'invalid-multi-factor-session',\n  INVALID_OAUTH_CLIENT_ID: 'invalid-oauth-client-id',\n  INVALID_OAUTH_PROVIDER: 'invalid-oauth-provider',\n  INVALID_OOB_CODE: 'invalid-action-code',\n  INVALID_ORIGIN: 'unauthorized-domain',\n  INVALID_PASSWORD: 'wrong-password',\n  INVALID_PERSISTENCE: 'invalid-persistence-type',\n  INVALID_PHONE_NUMBER: 'invalid-phone-number',\n  INVALID_PROVIDER_ID: 'invalid-provider-id',\n  INVALID_RECIPIENT_EMAIL: 'invalid-recipient-email',\n  INVALID_SENDER: 'invalid-sender',\n  INVALID_SESSION_INFO: 'invalid-verification-id',\n  INVALID_TENANT_ID: 'invalid-tenant-id',\n  MFA_ENROLLMENT_NOT_FOUND: 'multi-factor-info-not-found',\n  MFA_REQUIRED: 'multi-factor-auth-required',\n  MISSING_ANDROID_PACKAGE_NAME: 'missing-android-pkg-name',\n  MISSING_APP_CREDENTIAL: 'missing-app-credential',\n  MISSING_AUTH_DOMAIN: 'auth-domain-config-required',\n  MISSING_CODE: 'missing-verification-code',\n  MISSING_CONTINUE_URI: 'missing-continue-uri',\n  MISSING_IFRAME_START: 'missing-iframe-start',\n  MISSING_IOS_BUNDLE_ID: 'missing-ios-bundle-id',\n  MISSING_MFA_ENROLLMENT_ID: 'missing-multi-factor-info',\n  MISSING_MFA_PENDING_CREDENTIAL: 'missing-multi-factor-session',\n  MISSING_OR_INVALID_NONCE: 'missing-or-invalid-nonce',\n  MISSING_PHONE_NUMBER: 'missing-phone-number',\n  MISSING_SESSION_INFO: 'missing-verification-id',\n  MODULE_DESTROYED: 'app-deleted',\n  NEED_CONFIRMATION: 'account-exists-with-different-credential',\n  NETWORK_REQUEST_FAILED: 'network-request-failed',\n  NULL_USER: 'null-user',\n  NO_AUTH_EVENT: 'no-auth-event',\n  NO_SUCH_PROVIDER: 'no-such-provider',\n  OPERATION_NOT_ALLOWED: 'operation-not-allowed',\n  OPERATION_NOT_SUPPORTED: 'operation-not-supported-in-this-environment',\n  POPUP_BLOCKED: 'popup-blocked',\n  POPUP_CLOSED_BY_USER: 'popup-closed-by-user',\n  PROVIDER_ALREADY_LINKED: 'provider-already-linked',\n  QUOTA_EXCEEDED: 'quota-exceeded',\n  REDIRECT_CANCELLED_BY_USER: 'redirect-cancelled-by-user',\n  REDIRECT_OPERATION_PENDING: 'redirect-operation-pending',\n  REJECTED_CREDENTIAL: 'rejected-credential',\n  SECOND_FACTOR_EXISTS: 'second-factor-already-in-use',\n  SECOND_FACTOR_LIMIT_EXCEEDED: 'maximum-second-factor-count-exceeded',\n  TENANT_ID_MISMATCH: 'tenant-id-mismatch',\n  TIMEOUT: 'timeout',\n  TOKEN_EXPIRED: 'user-token-expired',\n  TOO_MANY_ATTEMPTS_TRY_LATER: 'too-many-requests',\n  UNAUTHORIZED_DOMAIN: 'unauthorized-continue-uri',\n  UNSUPPORTED_FIRST_FACTOR: 'unsupported-first-factor',\n  UNSUPPORTED_PERSISTENCE: 'unsupported-persistence-type',\n  UNSUPPORTED_TENANT_OPERATION: 'unsupported-tenant-operation',\n  UNVERIFIED_EMAIL: 'unverified-email',\n  USER_CANCELLED: 'user-cancelled',\n  USER_DELETED: 'user-not-found',\n  USER_DISABLED: 'user-disabled',\n  USER_MISMATCH: 'user-mismatch',\n  USER_SIGNED_OUT: 'user-signed-out',\n  WEAK_PASSWORD: 'weak-password',\n  WEB_STORAGE_UNSUPPORTED: 'web-storage-unsupported'\n};\n\n\n/**\n * Map from developer error codes to human-readable error messages.\n * @private {!Object<string, string>}\n */\nfireauth.AuthError.MESSAGES_ = {};\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.ADMIN_ONLY_OPERATION] =\n    'This operation is restricted to administrators only.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.ARGUMENT_ERROR] = '';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.APP_NOT_AUTHORIZED] =\n    'This app, identified by the domain where it\\'s hosted, is not ' +\n    'authorized to use Firebase Authentication with the provided API key. ' +\n    'Review your key configuration in the Google API console.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.APP_NOT_INSTALLED] =\n    'The requested mobile application corresponding to the identifier (' +\n    'Android package name or iOS bundle ID) provided is not installed on ' +\n    'this device.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.CAPTCHA_CHECK_FAILED] =\n    'The reCAPTCHA response token provided is either invalid, expired, ' +\n    'already used or the domain associated with it does not match the list ' +\n    'of whitelisted domains.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.CODE_EXPIRED] =\n    'The SMS code has expired. Please re-send the verification code to try ' +\n    'again.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.CORDOVA_NOT_READY] =\n    'Cordova framework is not ready.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.CORS_UNSUPPORTED] =\n    'This browser is not supported.';\nfireauth.AuthError.MESSAGES_[\n    fireauth.authenum.Error.CREDENTIAL_ALREADY_IN_USE] =\n    'This credential is already associated with a different user account.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.CREDENTIAL_MISMATCH] =\n    'The custom token corresponds to a different audience.';\nfireauth.AuthError.MESSAGES_[\n    fireauth.authenum.Error.CREDENTIAL_TOO_OLD_LOGIN_AGAIN] =\n    'This operation is sensitive and requires recent authentication. Log in ' +\n    'again before retrying this request.';\nfireauth.AuthError.MESSAGES_[\n    fireauth.authenum.Error.DYNAMIC_LINK_NOT_ACTIVATED] = 'Please activate ' +\n    'Dynamic Links in the Firebase Console and agree to the terms and ' +\n    'conditions.';\nfireauth.AuthError.MESSAGES_[\n    fireauth.authenum.Error.EMAIL_CHANGE_NEEDS_VERIFICATION] =\n    'Multi-factor users must always have a verified email.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.EMAIL_EXISTS] =\n    'The email address is already in use by another account.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.EXPIRED_OOB_CODE] =\n    'The action code has expired. ';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.EXPIRED_POPUP_REQUEST] =\n    'This operation has been cancelled due to another conflicting popup ' +\n    'being opened.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INTERNAL_ERROR] =\n    'An internal error has occurred.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_APP_CREDENTIAL] =\n    'The phone verification request contains an invalid application verifier.' +\n    ' The reCAPTCHA token response is either invalid or expired.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_APP_ID] =\n    'The mobile app identifier is not registed for the current project.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_AUTH] =\n    'This user\\'s credential isn\\'t valid for this project. This can happen ' +\n    'if the user\\'s token has been tampered with, or if the user isn\\'t for ' +\n    'the project associated with this API key.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_AUTH_EVENT] =\n    'An internal error has occurred.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_CODE] =\n    'The SMS verification code used to create the phone auth credential is ' +\n    'invalid. Please resend the verification code sms and be sure use the ' +\n    'verification code provided by the user.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_CONTINUE_URI] =\n    'The continue URL provided in the request is invalid.';\nfireauth.AuthError.MESSAGES_[\n     fireauth.authenum.Error.INVALID_CORDOVA_CONFIGURATION] = 'The following' +\n    ' Cordova plugins must be installed to enable OAuth sign-in: ' +\n    'cordova-plugin-buildinfo, cordova-universal-links-plugin, ' +\n    'cordova-plugin-browsertab, cordova-plugin-inappbrowser and ' +\n    'cordova-plugin-customurlscheme.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_CUSTOM_TOKEN] =\n    'The custom token format is incorrect. Please check the documentation.';\nfireauth.AuthError.MESSAGES_[\n    fireauth.authenum.Error.INVALID_DYNAMIC_LINK_DOMAIN] = 'The provided ' +\n    'dynamic link domain is not configured or authorized for the current ' +\n    'project.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_EMAIL] =\n    'The email address is badly formatted.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_API_KEY] =\n    'Your API key is invalid, please check you have copied it correctly.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_CERT_HASH] =\n    'The SHA-1 certificate hash provided is invalid.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_IDP_RESPONSE] =\n    'The supplied auth credential is malformed or has expired.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_MESSAGE_PAYLOAD] =\n    'The email template corresponding to this action contains invalid charac' +\n    'ters in its message. Please fix by going to the Auth email templates se' +\n    'ction in the Firebase Console.';\nfireauth.AuthError.MESSAGES_[\n    fireauth.authenum.Error.INVALID_MFA_PENDING_CREDENTIAL] =\n    'The request does not contain a valid proof of first factor successful ' +\n    'sign-in.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_OAUTH_PROVIDER] =\n    'EmailAuthProvider is not supported for this operation. This operation ' +\n    'only supports OAuth providers.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_OAUTH_CLIENT_ID] =\n    'The OAuth client ID provided is either invalid or does not match the ' +\n    'specified API key.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_ORIGIN] =\n    'This domain is not authorized for OAuth operations for your Firebase ' +\n    'project. Edit the list of authorized domains from the Firebase console.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_OOB_CODE] =\n    'The action code is invalid. This can happen if the code is malformed, ' +\n    'expired, or has already been used.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_PASSWORD] =\n    'The password is invalid or the user does not have a password.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_PERSISTENCE] =\n    'The specified persistence type is invalid. It can only be local, ' +\n    'session or none.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_PHONE_NUMBER] =\n    'The format of the phone number provided is incorrect. Please enter the ' +\n    'phone number in a format that can be parsed into E.164 format. E.164 ' +\n    'phone numbers are written in the format [+][country code][subscriber ' +\n    'number including area code].';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_PROVIDER_ID] =\n    'The specified provider ID is invalid.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_RECIPIENT_EMAIL] =\n    'The email corresponding to this action failed to send as the provided ' +\n    'recipient email address is invalid.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_SENDER] =\n    'The email template corresponding to this action contains an invalid sen' +\n    'der email or name. Please fix by going to the Auth email templates sect' +\n    'ion in the Firebase Console.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_SESSION_INFO] =\n    'The verification ID used to create the phone auth credential is invalid.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.INVALID_TENANT_ID] =\n    'The Auth instance\\'s tenant ID is invalid.';\nfireauth.AuthError.MESSAGES_[\n    fireauth.authenum.Error.MFA_ENROLLMENT_NOT_FOUND] = 'The user does not ' +\n    'have a second factor matching the identifier provided.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.MFA_REQUIRED] =\n    'Proof of ownership of a second factor is required to complete sign-in.';\nfireauth.AuthError.MESSAGES_[\n    fireauth.authenum.Error.MISSING_ANDROID_PACKAGE_NAME] = 'An Android ' +\n    'Package Name must be provided if the Android App is required to be ' +\n    'installed.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.MISSING_AUTH_DOMAIN] =\n    'Be sure to include authDomain when calling firebase.initializeApp(), ' +\n    'by following the instructions in the Firebase console.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.MISSING_APP_CREDENTIAL] =\n    'The phone verification request is missing an application verifier ' +\n    'assertion. A reCAPTCHA response token needs to be provided.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.MISSING_CODE] =\n    'The phone auth credential was created with an empty SMS verification ' +\n    'code.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.MISSING_CONTINUE_URI] =\n    'A continue URL must be provided in the request.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.MISSING_IFRAME_START] =\n    'An internal error has occurred.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.MISSING_IOS_BUNDLE_ID] =\n    'An iOS Bundle ID must be provided if an App Store ID is provided.';\nfireauth.AuthError.MESSAGES_[\n    fireauth.authenum.Error.MISSING_MFA_ENROLLMENT_ID] =\n    'No second factor identifier is provided.';\nfireauth.AuthError.MESSAGES_[\n    fireauth.authenum.Error.MISSING_MFA_PENDING_CREDENTIAL] =\n    'The request is missing proof of first factor successful sign-in.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.MISSING_OR_INVALID_NONCE] =\n    'The request does not contain a valid nonce. This can occur if the ' +\n    'SHA-256 hash of the provided raw nonce does not match the hashed nonce ' +\n    'in the ID token payload.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.MISSING_PHONE_NUMBER] =\n    'To send verification codes, provide a phone number for the recipient.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.MISSING_SESSION_INFO] =\n    'The phone auth credential was created with an empty verification ID.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.MODULE_DESTROYED] =\n    'This instance of FirebaseApp has been deleted.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.NEED_CONFIRMATION] =\n    'An account already exists with the same email address but different ' +\n    'sign-in credentials. Sign in using a provider associated with this ' +\n    'email address.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.NETWORK_REQUEST_FAILED] =\n    'A network error (such as timeout, interrupted connection or ' +\n    'unreachable host) has occurred.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.NO_AUTH_EVENT] =\n    'An internal error has occurred.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.NO_SUCH_PROVIDER] =\n    'User was not linked to an account with the given provider.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.NULL_USER] =\n    'A null user object was provided as the argument for an operation which ' +\n    'requires a non-null user object.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.OPERATION_NOT_ALLOWED] =\n    'The given sign-in provider is disabled for this Firebase project. ' +\n    'Enable it in the Firebase console, under the sign-in method tab of the ' +\n    'Auth section.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.OPERATION_NOT_SUPPORTED] =\n    'This operation is not supported in the environment this application is ' +\n    'running on. \"location.protocol\" must be http, https or chrome-extension' +\n    ' and web storage must be enabled.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.POPUP_BLOCKED] =\n    'Unable to establish a connection with the popup. It may have been ' +\n    'blocked by the browser.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.POPUP_CLOSED_BY_USER] =\n    'The popup has been closed by the user before finalizing the operation.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.PROVIDER_ALREADY_LINKED] =\n    'User can only be linked to one identity for the given provider.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.QUOTA_EXCEEDED] =\n    'The project\\'s quota for this operation has been exceeded.';\nfireauth.AuthError.MESSAGES_[\n    fireauth.authenum.Error.REDIRECT_CANCELLED_BY_USER] =\n    'The redirect operation has been cancelled by the user before finalizing.';\nfireauth.AuthError.MESSAGES_[\n    fireauth.authenum.Error.REDIRECT_OPERATION_PENDING] =\n    'A redirect sign-in operation is already pending.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.REJECTED_CREDENTIAL] =\n    'The request contains malformed or mismatching credentials.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.SECOND_FACTOR_EXISTS] =\n    'The second factor is already enrolled on this account.';\nfireauth.AuthError.MESSAGES_[\n    fireauth.authenum.Error.SECOND_FACTOR_LIMIT_EXCEEDED] =\n    'The maximum allowed number of second factors on a user has been exceeded.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.TENANT_ID_MISMATCH] =\n    'The provided tenant ID does not match the Auth instance\\'s tenant ID';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.TIMEOUT] =\n    'The operation has timed out.';\nfireauth.AuthError.MESSAGES_[\n    fireauth.authenum.Error.TOKEN_EXPIRED] =\n    'The user\\'s credential is no longer valid. The user must sign in again.';\nfireauth.AuthError.MESSAGES_[\n    fireauth.authenum.Error.TOO_MANY_ATTEMPTS_TRY_LATER] =\n    'We have blocked all requests from this device due to unusual activity. ' +\n    'Try again later.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.UNAUTHORIZED_DOMAIN] =\n    'The domain of the continue URL is not whitelisted.  Please whitelist ' +\n    'the domain in the Firebase console.';\nfireauth.AuthError.MESSAGES_[\n    fireauth.authenum.Error.UNSUPPORTED_FIRST_FACTOR] = 'Enrolling a second ' +\n    'factor or signing in with a multi-factor account requires sign-in with ' +\n    'a supported first factor.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.UNSUPPORTED_PERSISTENCE] =\n    'The current environment does not support the specified persistence type.';\nfireauth.AuthError.MESSAGES_[\n    fireauth.authenum.Error.UNSUPPORTED_TENANT_OPERATION] =\n    'This operation is not supported in a multi-tenant context.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.UNVERIFIED_EMAIL] =\n    'The operation requires a verified email.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.USER_CANCELLED] =\n    'The user did not grant your application the permissions it requested.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.USER_DELETED] =\n    'There is no user record corresponding to this identifier. The user may ' +\n    'have been deleted.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.USER_DISABLED] =\n    'The user account has been disabled by an administrator.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.USER_MISMATCH] =\n    'The supplied credentials do not correspond to the previously signed in ' +\n    'user.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.USER_SIGNED_OUT] = '';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.WEAK_PASSWORD] =\n    'The password must be 6 characters long or more.';\nfireauth.AuthError.MESSAGES_[fireauth.authenum.Error.WEB_STORAGE_UNSUPPORTED] =\n    'This browser is not supported or 3rd party cookies and data may be ' +\n    'disabled.';\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines all common constants and enums used by firebase-auth.\n */\n\ngoog.provide('fireauth.constants');\ngoog.provide('fireauth.constants.AuthEventType');\n\n\n/**\n * Enums for authentication operation types.\n * @enum {string}\n */\nfireauth.constants.OperationType = {\n  LINK: 'link',\n  REAUTHENTICATE: 'reauthenticate',\n  SIGN_IN: 'signIn'\n};\n\n\n/**\n * Events dispatched firebase.auth.Auth.\n * @enum {string}\n */\nfireauth.constants.AuthEventType = {\n  /** Dispatched when emulator config is changed. */\n  EMULATOR_CONFIG_CHANGED: 'emulatorConfigChanged',\n  /** Dispatched when Firebase framework is changed. */\n  FRAMEWORK_CHANGED: 'frameworkChanged',\n  /** Dispatched when language code is changed. */\n  LANGUAGE_CODE_CHANGED: 'languageCodeChanged'\n};\n\n\n/**\n * Enums for all second factor types.\n * @enum {string}\n */\nfireauth.constants.SecondFactorType = {\n  PHONE: 'phone'\n};\n\n\n/**\n * The settings of an Auth endpoint. The fields are:\n * <ul>\n * <li>firebaseAuthEndpoint: defines the Firebase Auth backend endpoint for\n *     specified endpoint type.</li>\n * <li>secureTokenEndpoint: defines the secure token backend endpoint for\n *     specified endpoint type.</li>\n * <li>identityPlatformEndpoint: defines the Identity Platform backend endpoint\n *     for specified endpoint type.</li>\n * <li>id: defines the endpoint identifier.</li>\n * </ul>\n * @typedef {{\n *   firebaseAuthEndpoint: string,\n *   secureTokenEndpoint: string,\n *   identityPlatformEndpoint: string,\n *   id: string\n * }}\n */\nfireauth.constants.EndpointSettings;\n\n\n/**\n * The different endpoints for Firebase Auth backend.\n * @enum {!fireauth.constants.EndpointSettings}\n */\nfireauth.constants.Endpoint = {\n  // TODO: this is no longer needed now that client endpoint migration is\n  // completed.\n  BOQ: {\n    firebaseAuthEndpoint: 'https://staging-identitytoolkit.sandbox.googleapi' +\n        's.com/identitytoolkit/v3/relyingparty/',\n    secureTokenEndpoint: 'https://staging-securetoken.sandbox.googleapis.com' +\n        '/v1/token',\n    identityPlatformEndpoint:\n        'https://staging-identitytoolkit.sandbox.googleapis.com/v2/',\n    id: 'b'\n  },\n  PRODUCTION: {\n    firebaseAuthEndpoint: 'https://www.googleapis.com/identitytoolkit/v3/' +\n        'relyingparty/',\n    secureTokenEndpoint: 'https://securetoken.googleapis.com/v1/token',\n    identityPlatformEndpoint:\n        'https://identitytoolkit.googleapis.com/v2/',\n    id: 'p'\n  },\n  STAGING: {\n    firebaseAuthEndpoint: 'https://staging-www.sandbox.googleapis.com/' +\n        'identitytoolkit/v3/relyingparty/',\n    secureTokenEndpoint: 'https://staging-securetoken.sandbox.googleapis.com' +\n        '/v1/token',\n    identityPlatformEndpoint:\n        'https://staging-identitytoolkit.sandbox.googleapis.com/v2/',\n    id: 's'\n  },\n  TEST: {\n    firebaseAuthEndpoint: 'https://www-googleapis-test.sandbox.google.com/' +\n        'identitytoolkit/v3/relyingparty/',\n    secureTokenEndpoint: 'https://test-securetoken.sandbox.googleapis.com/v1' +\n        '/token',\n    identityPlatformEndpoint:\n        'https://test-identitytoolkit.sandbox.googleapis.com/v2/',\n    id: 't'\n  }\n};\n\n\n/**\n * Returns the endpoint specific RpcHandler configuration.\n * @param {?string=} opt_id The identifier of the endpoint type if available.\n * @return {?Object|undefined} The RpcHandler endpoint configuration object.\n */\nfireauth.constants.getEndpointConfig = function(opt_id) {\n  for (var endpointKey in fireauth.constants.Endpoint) {\n    if (fireauth.constants.Endpoint[endpointKey].id === opt_id) {\n      var endpoint = fireauth.constants.Endpoint[endpointKey];\n      return {\n        'firebaseEndpoint': endpoint.firebaseAuthEndpoint,\n        'secureTokenEndpoint': endpoint.secureTokenEndpoint,\n        'identityPlatformEndpoint': endpoint.identityPlatformEndpoint\n      };\n    }\n  }\n  return null;\n};\n\n\n/**\n * Returns the validated endpoint identifier. Undefined if the provided one is\n * invalid.\n * @param {?string=} opt_id The identifier of the endpoint type if available.\n * @return {string|undefined} The validated endpoint ID. If not valid,\n *     undefined.\n */\nfireauth.constants.getEndpointId = function(opt_id) {\n  if (opt_id && fireauth.constants.getEndpointConfig(opt_id)) {\n    return opt_id;\n  }\n  return undefined;\n};\n\n\n/** @const {string|undefined} The current client endpoint. */\nfireauth.constants.clientEndpoint = fireauth.constants.getEndpointId('__EID__');\n\n\n/** @const {string} The required SAML provider ID prefix. */\nfireauth.constants.SAML_PREFIX = 'saml.';\n\n\n/** @const {string} The required OIDC provider ID prefix. */\nfireauth.constants.OIDC_PREFIX = 'oidc.';\n\n/**\n * The settings of an Auth emulator. The fields are:\n * <ul>\n * <li>url: defines the URL where the emulator is running.</li>\n * <li>disableWarnings: if true, banner is not shown on the page.</li>\n * </ul>\n * @typedef {{\n *   url: string,\n *   disableWarnings: boolean,\n * }}\n */\nfireauth.constants.EmulatorSettings;\n \n \n/**\n * The (externally visible) emulator configuration, used for\n * getEmulatorConfig(). The fields are:\n * <ul>\n * <li>protocol: the protocol used by the emulator (http or https).</li>\n * <li>host: the host used to reach the emulator.</li>\n * <li>port: the port used to reach the emulator.</li>\n * <li>options: a list of options used to configure the SDK's interaction with\n * the emulator.</li>\n * </ul>\n * @typedef {{\n *   protocol: string,\n *   host: string,\n *   port: (number|null),\n *   options: {\n *     disableWarnings: boolean,\n *   }\n * }}\n */\nfireauth.constants.EmulatorConfig;","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\ngoog.provide('goog.Thenable');\n\n/** @suppress {extraRequire} used in complex type */\ngoog.requireType('goog.Promise');  // for the type reference.\n\n\n\n/**\n * Provides a more strict interface for Thenables in terms of\n * http://promisesaplus.com for interop with {@see goog.Promise}.\n *\n * @interface\n * @extends {IThenable<TYPE>}\n * @template TYPE\n */\ngoog.Thenable = function() {};\n\n\n/**\n * Adds callbacks that will operate on the result of the Thenable, returning a\n * new child Promise.\n *\n * If the Thenable is fulfilled, the `onFulfilled` callback will be\n * invoked with the fulfillment value as argument, and the child Promise will\n * be fulfilled with the return value of the callback. If the callback throws\n * an exception, the child Promise will be rejected with the thrown value\n * instead.\n *\n * If the Thenable is rejected, the `onRejected` callback will be invoked with\n * the rejection reason as argument. Similar to the fulfilled case, the child\n * Promise will then be resolved with the return value of the callback, or\n * rejected with the thrown value if the callback throws an exception.\n *\n * @param {?(function(this:THIS, TYPE): VALUE)=} opt_onFulfilled A\n *     function that will be invoked with the fulfillment value if the Promise\n *     is fulfilled.\n * @param {?(function(this:THIS, *): *)=} opt_onRejected A function that will\n *     be invoked with the rejection reason if the Promise is rejected.\n * @param {THIS=} opt_context An optional context object that will be the\n *     execution context for the callbacks. By default, functions are executed\n *     with the default this.\n *\n * @return {RESULT} A new Promise that will receive the result\n *     of the fulfillment or rejection callback.\n * @template VALUE\n * @template THIS\n *\n * When a Promise (or thenable) is returned from the fulfilled callback,\n * the result is the payload of that promise, not the promise itself.\n *\n * @template RESULT := type('goog.Promise',\n *     cond(isUnknown(VALUE), unknown(),\n *       mapunion(VALUE, (V) =>\n *         cond(isTemplatized(V) && sub(rawTypeOf(V), 'IThenable'),\n *           templateTypeOf(V, 0),\n *           cond(sub(V, 'Thenable'),\n *              unknown(),\n *              V)))))\n *  =:\n *\n */\ngoog.Thenable.prototype.then = function(\n    opt_onFulfilled, opt_onRejected, opt_context) {};\n\n\n/**\n * An expando property to indicate that an object implements\n * `goog.Thenable`.\n *\n * {@see addImplementation}.\n *\n * @const\n */\ngoog.Thenable.IMPLEMENTED_BY_PROP = '$goog_Thenable';\n\n\n/**\n * Marks a given class (constructor) as an implementation of Thenable, so\n * that we can query that fact at runtime. The class must have already\n * implemented the interface.\n * Exports a 'then' method on the constructor prototype, so that the objects\n * also implement the extern {@see goog.Thenable} interface for interop with\n * other Promise implementations.\n * @param {function(new:goog.Thenable,...?)} ctor The class constructor. The\n *     corresponding class must have already implemented the interface.\n */\ngoog.Thenable.addImplementation = function(ctor) {\n  if (COMPILED) {\n    ctor.prototype[goog.Thenable.IMPLEMENTED_BY_PROP] = true;\n  } else {\n    // Avoids dictionary access in uncompiled mode.\n    ctor.prototype.$goog_Thenable = true;\n  }\n};\n\n\n/**\n * @param {?} object\n * @return {boolean} Whether a given instance implements `goog.Thenable`.\n *     The class/superclass of the instance must call `addImplementation`.\n */\ngoog.Thenable.isImplementedBy = function(object) {\n  if (!object) {\n    return false;\n  }\n  try {\n    if (COMPILED) {\n      return !!object[goog.Thenable.IMPLEMENTED_BY_PROP];\n    }\n    return !!object.$goog_Thenable;\n  } catch (e) {\n    // Property access seems to be forbidden.\n    return false;\n  }\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Provides a base class for custom Error objects such that the\n * stack is correctly maintained.\n *\n * You should never need to throw goog.debug.Error(msg) directly, Error(msg) is\n * sufficient.\n */\n\ngoog.provide('goog.debug.Error');\n\n\n\n/**\n * Base class for custom error objects.\n * @param {*=} opt_msg The message associated with the error.\n * @constructor\n * @extends {Error}\n */\ngoog.debug.Error = function(opt_msg) {\n\n  // Attempt to ensure there is a stack trace.\n  if (Error.captureStackTrace) {\n    Error.captureStackTrace(this, goog.debug.Error);\n  } else {\n    const stack = new Error().stack;\n    if (stack) {\n      /** @override */\n      this.stack = stack;\n    }\n  }\n\n  if (opt_msg) {\n    /** @override */\n    this.message = String(opt_msg);\n  }\n\n  /**\n   * Whether to report this error to the server. Setting this to false will\n   * cause the error reporter to not report the error back to the server,\n   * which can be useful if the client knows that the error has already been\n   * logged on the server.\n   * @type {boolean}\n   */\n  this.reportErrorToServer = true;\n};\ngoog.inherits(goog.debug.Error, Error);\n\n\n/** @override */\ngoog.debug.Error.prototype.name = 'CustomError';\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Utilities to check the preconditions, postconditions and\n * invariants runtime.\n *\n * Methods in this package are given special treatment by the compiler\n * for type-inference. For example, <code>goog.asserts.assert(foo)</code>\n * will make the compiler treat <code>foo</code> as non-nullable. Similarly,\n * <code>goog.asserts.assertNumber(foo)</code> informs the compiler about the\n * type of <code>foo</code>. Where applicable, such assertions are preferable to\n * casts by jsdoc with <code>@type</code>.\n *\n * The compiler has an option to disable asserts. So code like:\n * <code>\n * var x = goog.asserts.assert(foo());\n * goog.asserts.assert(bar());\n * </code>\n * will be transformed into:\n * <code>\n * var x = foo();\n * </code>\n * The compiler will leave in foo() (because its return value is used),\n * but it will remove bar() because it assumes it does not have side-effects.\n *\n * Additionally, note the compiler will consider the type to be \"tightened\" for\n * all statements <em>after</em> the assertion. For example:\n * <code>\n * const /** ?Object &#ast;/ value = foo();\n * goog.asserts.assert(value);\n * // \"value\" is of type {!Object} at this point.\n * </code>\n */\n\ngoog.provide('goog.asserts');\ngoog.provide('goog.asserts.AssertionError');\n\ngoog.require('goog.debug.Error');\ngoog.require('goog.dom.NodeType');\n\n\n/**\n * @define {boolean} Whether to strip out asserts or to leave them in.\n */\ngoog.asserts.ENABLE_ASSERTS =\n    goog.define('goog.asserts.ENABLE_ASSERTS', goog.DEBUG);\n\n\n\n/**\n * Error object for failed assertions.\n * @param {string} messagePattern The pattern that was used to form message.\n * @param {!Array<*>} messageArgs The items to substitute into the pattern.\n * @constructor\n * @extends {goog.debug.Error}\n * @final\n */\ngoog.asserts.AssertionError = function(messagePattern, messageArgs) {\n  goog.debug.Error.call(this, goog.asserts.subs_(messagePattern, messageArgs));\n\n  /**\n   * The message pattern used to format the error message. Error handlers can\n   * use this to uniquely identify the assertion.\n   * @type {string}\n   */\n  this.messagePattern = messagePattern;\n};\ngoog.inherits(goog.asserts.AssertionError, goog.debug.Error);\n\n\n/** @override */\ngoog.asserts.AssertionError.prototype.name = 'AssertionError';\n\n\n/**\n * The default error handler.\n * @param {!goog.asserts.AssertionError} e The exception to be handled.\n */\ngoog.asserts.DEFAULT_ERROR_HANDLER = function(e) {\n  throw e;\n};\n\n\n/**\n * The handler responsible for throwing or logging assertion errors.\n * @private {function(!goog.asserts.AssertionError)}\n */\ngoog.asserts.errorHandler_ = goog.asserts.DEFAULT_ERROR_HANDLER;\n\n\n/**\n * Does simple python-style string substitution.\n * subs(\"foo%s hot%s\", \"bar\", \"dog\") becomes \"foobar hotdog\".\n * @param {string} pattern The string containing the pattern.\n * @param {!Array<*>} subs The items to substitute into the pattern.\n * @return {string} A copy of `str` in which each occurrence of\n *     {@code %s} has been replaced an argument from `var_args`.\n * @private\n */\ngoog.asserts.subs_ = function(pattern, subs) {\n  var splitParts = pattern.split('%s');\n  var returnString = '';\n\n  // Replace up to the last split part. We are inserting in the\n  // positions between split parts.\n  var subLast = splitParts.length - 1;\n  for (var i = 0; i < subLast; i++) {\n    // keep unsupplied as '%s'\n    var sub = (i < subs.length) ? subs[i] : '%s';\n    returnString += splitParts[i] + sub;\n  }\n  return returnString + splitParts[subLast];\n};\n\n\n/**\n * Throws an exception with the given message and \"Assertion failed\" prefixed\n * onto it.\n * @param {string} defaultMessage The message to use if givenMessage is empty.\n * @param {Array<*>} defaultArgs The substitution arguments for defaultMessage.\n * @param {string|undefined} givenMessage Message supplied by the caller.\n * @param {Array<*>} givenArgs The substitution arguments for givenMessage.\n * @throws {goog.asserts.AssertionError} When the value is not a number.\n * @private\n */\ngoog.asserts.doAssertFailure_ = function(\n    defaultMessage, defaultArgs, givenMessage, givenArgs) {\n  var message = 'Assertion failed';\n  if (givenMessage) {\n    message += ': ' + givenMessage;\n    var args = givenArgs;\n  } else if (defaultMessage) {\n    message += ': ' + defaultMessage;\n    args = defaultArgs;\n  }\n  // The '' + works around an Opera 10 bug in the unit tests. Without it,\n  // a stack trace is added to var message above. With this, a stack trace is\n  // not added until this line (it causes the extra garbage to be added after\n  // the assertion message instead of in the middle of it).\n  var e = new goog.asserts.AssertionError('' + message, args || []);\n  goog.asserts.errorHandler_(e);\n};\n\n\n/**\n * Sets a custom error handler that can be used to customize the behavior of\n * assertion failures, for example by turning all assertion failures into log\n * messages.\n * @param {function(!goog.asserts.AssertionError)} errorHandler\n */\ngoog.asserts.setErrorHandler = function(errorHandler) {\n  if (goog.asserts.ENABLE_ASSERTS) {\n    goog.asserts.errorHandler_ = errorHandler;\n  }\n};\n\n\n/**\n * Checks if the condition evaluates to true if goog.asserts.ENABLE_ASSERTS is\n * true.\n * @template T\n * @param {T} condition The condition to check.\n * @param {string=} opt_message Error message in case of failure.\n * @param {...*} var_args The items to substitute into the failure message.\n * @return {T} The value of the condition.\n * @throws {goog.asserts.AssertionError} When the condition evaluates to false.\n * @closurePrimitive {asserts.truthy}\n */\ngoog.asserts.assert = function(condition, opt_message, var_args) {\n  if (goog.asserts.ENABLE_ASSERTS && !condition) {\n    goog.asserts.doAssertFailure_(\n        '', null, opt_message, Array.prototype.slice.call(arguments, 2));\n  }\n  return condition;\n};\n\n\n/**\n * Checks if `value` is `null` or `undefined` if goog.asserts.ENABLE_ASSERTS is\n * true.\n *\n * @param {T} value The value to check.\n * @param {string=} opt_message Error message in case of failure.\n * @param {...*} var_args The items to substitute into the failure message.\n * @return {R} `value` with its type narrowed to exclude `null` and `undefined`.\n *\n * @template T\n * @template R :=\n *     mapunion(T, (V) =>\n *         cond(eq(V, 'null'),\n *             none(),\n *             cond(eq(V, 'undefined'),\n *                 none(),\n *                 V)))\n *  =:\n *\n * @throws {!goog.asserts.AssertionError} When `value` is `null` or `undefined`.\n * @closurePrimitive {asserts.matchesReturn}\n */\ngoog.asserts.assertExists = function(value, opt_message, var_args) {\n  if (goog.asserts.ENABLE_ASSERTS && value == null) {\n    goog.asserts.doAssertFailure_(\n        'Expected to exist: %s.', [value], opt_message,\n        Array.prototype.slice.call(arguments, 2));\n  }\n  return value;\n};\n\n\n/**\n * Fails if goog.asserts.ENABLE_ASSERTS is true. This function is useful in case\n * when we want to add a check in the unreachable area like switch-case\n * statement:\n *\n * <pre>\n *  switch(type) {\n *    case FOO: doSomething(); break;\n *    case BAR: doSomethingElse(); break;\n *    default: goog.asserts.fail('Unrecognized type: ' + type);\n *      // We have only 2 types - \"default:\" section is unreachable code.\n *  }\n * </pre>\n *\n * @param {string=} opt_message Error message in case of failure.\n * @param {...*} var_args The items to substitute into the failure message.\n * @throws {goog.asserts.AssertionError} Failure.\n * @closurePrimitive {asserts.fail}\n */\ngoog.asserts.fail = function(opt_message, var_args) {\n  if (goog.asserts.ENABLE_ASSERTS) {\n    goog.asserts.errorHandler_(new goog.asserts.AssertionError(\n        'Failure' + (opt_message ? ': ' + opt_message : ''),\n        Array.prototype.slice.call(arguments, 1)));\n  }\n};\n\n\n/**\n * Checks if the value is a number if goog.asserts.ENABLE_ASSERTS is true.\n * @param {*} value The value to check.\n * @param {string=} opt_message Error message in case of failure.\n * @param {...*} var_args The items to substitute into the failure message.\n * @return {number} The value, guaranteed to be a number when asserts enabled.\n * @throws {goog.asserts.AssertionError} When the value is not a number.\n * @closurePrimitive {asserts.matchesReturn}\n */\ngoog.asserts.assertNumber = function(value, opt_message, var_args) {\n  if (goog.asserts.ENABLE_ASSERTS && typeof value !== 'number') {\n    goog.asserts.doAssertFailure_(\n        'Expected number but got %s: %s.', [goog.typeOf(value), value],\n        opt_message, Array.prototype.slice.call(arguments, 2));\n  }\n  return /** @type {number} */ (value);\n};\n\n\n/**\n * Checks if the value is a string if goog.asserts.ENABLE_ASSERTS is true.\n * @param {*} value The value to check.\n * @param {string=} opt_message Error message in case of failure.\n * @param {...*} var_args The items to substitute into the failure message.\n * @return {string} The value, guaranteed to be a string when asserts enabled.\n * @throws {goog.asserts.AssertionError} When the value is not a string.\n * @closurePrimitive {asserts.matchesReturn}\n */\ngoog.asserts.assertString = function(value, opt_message, var_args) {\n  if (goog.asserts.ENABLE_ASSERTS && typeof value !== 'string') {\n    goog.asserts.doAssertFailure_(\n        'Expected string but got %s: %s.', [goog.typeOf(value), value],\n        opt_message, Array.prototype.slice.call(arguments, 2));\n  }\n  return /** @type {string} */ (value);\n};\n\n\n/**\n * Checks if the value is a function if goog.asserts.ENABLE_ASSERTS is true.\n * @param {*} value The value to check.\n * @param {string=} opt_message Error message in case of failure.\n * @param {...*} var_args The items to substitute into the failure message.\n * @return {!Function} The value, guaranteed to be a function when asserts\n *     enabled.\n * @throws {goog.asserts.AssertionError} When the value is not a function.\n * @closurePrimitive {asserts.matchesReturn}\n */\ngoog.asserts.assertFunction = function(value, opt_message, var_args) {\n  if (goog.asserts.ENABLE_ASSERTS && !goog.isFunction(value)) {\n    goog.asserts.doAssertFailure_(\n        'Expected function but got %s: %s.', [goog.typeOf(value), value],\n        opt_message, Array.prototype.slice.call(arguments, 2));\n  }\n  return /** @type {!Function} */ (value);\n};\n\n\n/**\n * Checks if the value is an Object if goog.asserts.ENABLE_ASSERTS is true.\n * @param {*} value The value to check.\n * @param {string=} opt_message Error message in case of failure.\n * @param {...*} var_args The items to substitute into the failure message.\n * @return {!Object} The value, guaranteed to be a non-null object.\n * @throws {goog.asserts.AssertionError} When the value is not an object.\n * @closurePrimitive {asserts.matchesReturn}\n */\ngoog.asserts.assertObject = function(value, opt_message, var_args) {\n  if (goog.asserts.ENABLE_ASSERTS && !goog.isObject(value)) {\n    goog.asserts.doAssertFailure_(\n        'Expected object but got %s: %s.', [goog.typeOf(value), value],\n        opt_message, Array.prototype.slice.call(arguments, 2));\n  }\n  return /** @type {!Object} */ (value);\n};\n\n\n/**\n * Checks if the value is an Array if goog.asserts.ENABLE_ASSERTS is true.\n * @param {*} value The value to check.\n * @param {string=} opt_message Error message in case of failure.\n * @param {...*} var_args The items to substitute into the failure message.\n * @return {!Array<?>} The value, guaranteed to be a non-null array.\n * @throws {goog.asserts.AssertionError} When the value is not an array.\n * @closurePrimitive {asserts.matchesReturn}\n */\ngoog.asserts.assertArray = function(value, opt_message, var_args) {\n  if (goog.asserts.ENABLE_ASSERTS && !Array.isArray(value)) {\n    goog.asserts.doAssertFailure_(\n        'Expected array but got %s: %s.', [goog.typeOf(value), value],\n        opt_message, Array.prototype.slice.call(arguments, 2));\n  }\n  return /** @type {!Array<?>} */ (value);\n};\n\n\n/**\n * Checks if the value is a boolean if goog.asserts.ENABLE_ASSERTS is true.\n * @param {*} value The value to check.\n * @param {string=} opt_message Error message in case of failure.\n * @param {...*} var_args The items to substitute into the failure message.\n * @return {boolean} The value, guaranteed to be a boolean when asserts are\n *     enabled.\n * @throws {goog.asserts.AssertionError} When the value is not a boolean.\n * @closurePrimitive {asserts.matchesReturn}\n */\ngoog.asserts.assertBoolean = function(value, opt_message, var_args) {\n  if (goog.asserts.ENABLE_ASSERTS && typeof value !== 'boolean') {\n    goog.asserts.doAssertFailure_(\n        'Expected boolean but got %s: %s.', [goog.typeOf(value), value],\n        opt_message, Array.prototype.slice.call(arguments, 2));\n  }\n  return /** @type {boolean} */ (value);\n};\n\n\n/**\n * Checks if the value is a DOM Element if goog.asserts.ENABLE_ASSERTS is true.\n * @param {*} value The value to check.\n * @param {string=} opt_message Error message in case of failure.\n * @param {...*} var_args The items to substitute into the failure message.\n * @return {!Element} The value, likely to be a DOM Element when asserts are\n *     enabled.\n * @throws {goog.asserts.AssertionError} When the value is not an Element.\n * @closurePrimitive {asserts.matchesReturn}\n * @deprecated Use goog.asserts.dom.assertIsElement instead.\n */\ngoog.asserts.assertElement = function(value, opt_message, var_args) {\n  if (goog.asserts.ENABLE_ASSERTS &&\n      (!goog.isObject(value) ||\n       /** @type {!Node} */ (value).nodeType != goog.dom.NodeType.ELEMENT)) {\n    goog.asserts.doAssertFailure_(\n        'Expected Element but got %s: %s.', [goog.typeOf(value), value],\n        opt_message, Array.prototype.slice.call(arguments, 2));\n  }\n  return /** @type {!Element} */ (value);\n};\n\n\n/**\n * Checks if the value is an instance of the user-defined type if\n * goog.asserts.ENABLE_ASSERTS is true.\n *\n * The compiler may tighten the type returned by this function.\n *\n * Do not use this to ensure a value is an HTMLElement or a subclass! Cross-\n * document DOM inherits from separate - though identical - browser classes, and\n * such a check will unexpectedly fail. Please use the methods in\n * goog.asserts.dom for these purposes.\n *\n * @param {?} value The value to check.\n * @param {function(new: T, ...)} type A user-defined constructor.\n * @param {string=} opt_message Error message in case of failure.\n * @param {...*} var_args The items to substitute into the failure message.\n * @throws {goog.asserts.AssertionError} When the value is not an instance of\n *     type.\n * @return {T}\n * @template T\n * @closurePrimitive {asserts.matchesReturn}\n */\ngoog.asserts.assertInstanceof = function(value, type, opt_message, var_args) {\n  if (goog.asserts.ENABLE_ASSERTS && !(value instanceof type)) {\n    goog.asserts.doAssertFailure_(\n        'Expected instanceof %s but got %s.',\n        [goog.asserts.getType_(type), goog.asserts.getType_(value)],\n        opt_message, Array.prototype.slice.call(arguments, 3));\n  }\n  return value;\n};\n\n\n/**\n * Checks whether the value is a finite number, if goog.asserts.ENABLE_ASSERTS\n * is true.\n *\n * @param {*} value The value to check.\n * @param {string=} opt_message Error message in case of failure.\n * @param {...*} var_args The items to substitute into the failure message.\n * @throws {goog.asserts.AssertionError} When the value is not a number, or is\n *     a non-finite number such as NaN, Infinity or -Infinity.\n * @return {number} The value initially passed in.\n */\ngoog.asserts.assertFinite = function(value, opt_message, var_args) {\n  if (goog.asserts.ENABLE_ASSERTS &&\n      (typeof value != 'number' || !isFinite(value))) {\n    goog.asserts.doAssertFailure_(\n        'Expected %s to be a finite number but it is not.', [value],\n        opt_message, Array.prototype.slice.call(arguments, 2));\n  }\n  return /** @type {number} */ (value);\n};\n\n/**\n * Checks that no enumerable keys are present in Object.prototype. Such keys\n * would break most code that use {@code for (var ... in ...)} loops.\n */\ngoog.asserts.assertObjectPrototypeIsIntact = function() {\n  for (var key in Object.prototype) {\n    goog.asserts.fail(key + ' should not be enumerable in Object.prototype.');\n  }\n};\n\n\n/**\n * Returns the type of a value. If a constructor is passed, and a suitable\n * string cannot be found, 'unknown type name' will be returned.\n * @param {*} value A constructor, object, or primitive.\n * @return {string} The best display name for the value, or 'unknown type name'.\n * @private\n */\ngoog.asserts.getType_ = function(value) {\n  if (value instanceof Function) {\n    return value.displayName || value.name || 'unknown type name';\n  } else if (value instanceof Object) {\n    return /** @type {string} */ (value.constructor.displayName) ||\n        value.constructor.name || Object.prototype.toString.call(value);\n  } else {\n    return value === null ? 'null' : typeof value;\n  }\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Simple freelist.\n *\n * An anterative to goog.structs.SimplePool, it imposes the requirement that the\n * objects in the list contain a \"next\" property that can be used to maintain\n * the pool.\n */\n\ngoog.provide('goog.async.FreeList');\n\n\n/**\n * @template ITEM\n */\ngoog.async.FreeList = class {\n  /**\n   * @param {function():ITEM} create\n   * @param {function(ITEM):void} reset\n   * @param {number} limit\n   */\n  constructor(create, reset, limit) {\n    /** @private @const {number} */\n    this.limit_ = limit;\n    /** @private @const {function()} */\n    this.create_ = create;\n    /** @private @const {function(ITEM):void} */\n    this.reset_ = reset;\n\n    /** @private {number} */\n    this.occupants_ = 0;\n    /** @private {ITEM} */\n    this.head_ = null;\n  }\n\n  /**\n   * @return {ITEM}\n   */\n  get() {\n    let item;\n    if (this.occupants_ > 0) {\n      this.occupants_--;\n      item = this.head_;\n      this.head_ = item.next;\n      item.next = null;\n    } else {\n      item = this.create_();\n    }\n    return item;\n  }\n\n  /**\n   * @param {ITEM} item An item available for possible future reuse.\n   */\n  put(item) {\n    this.reset_(item);\n    if (this.occupants_ < this.limit_) {\n      this.occupants_++;\n      item.next = this.head_;\n      this.head_ = item;\n    }\n  }\n\n  /**\n   * Visible for testing.\n   * @package\n   * @return {number}\n   */\n  occupants() {\n    return this.occupants_;\n  }\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\ngoog.provide('goog.async.WorkItem');\ngoog.provide('goog.async.WorkQueue');\n\ngoog.require('goog.asserts');\ngoog.require('goog.async.FreeList');\n\n\n// TODO(johnlenz): generalize the WorkQueue if this is used by more\n// than goog.async.run.\n\n\n\n/**\n * A low GC workqueue. The key elements of this design:\n *   - avoids the need for goog.bind or equivalent by carrying scope\n *   - avoids the need for array reallocation by using a linked list\n *   - minimizes work entry objects allocation by recycling objects\n * @constructor\n * @final\n * @struct\n */\ngoog.async.WorkQueue = function() {\n  this.workHead_ = null;\n  this.workTail_ = null;\n};\n\n\n/** @define {number} The maximum number of entries to keep for recycling. */\ngoog.async.WorkQueue.DEFAULT_MAX_UNUSED =\n    goog.define('goog.async.WorkQueue.DEFAULT_MAX_UNUSED', 100);\n\n\n/** @const @private {goog.async.FreeList<goog.async.WorkItem>} */\ngoog.async.WorkQueue.freelist_ = new goog.async.FreeList(\n    function() { return new goog.async.WorkItem(); },\n    function(item) { item.reset(); }, goog.async.WorkQueue.DEFAULT_MAX_UNUSED);\n\n\n/**\n * @param {function()} fn\n * @param {Object|null|undefined} scope\n */\ngoog.async.WorkQueue.prototype.add = function(fn, scope) {\n  var item = this.getUnusedItem_();\n  item.set(fn, scope);\n\n  if (this.workTail_) {\n    this.workTail_.next = item;\n    this.workTail_ = item;\n  } else {\n    goog.asserts.assert(!this.workHead_);\n    this.workHead_ = item;\n    this.workTail_ = item;\n  }\n};\n\n\n/**\n * @return {goog.async.WorkItem}\n */\ngoog.async.WorkQueue.prototype.remove = function() {\n  var item = null;\n\n  if (this.workHead_) {\n    item = this.workHead_;\n    this.workHead_ = this.workHead_.next;\n    if (!this.workHead_) {\n      this.workTail_ = null;\n    }\n    item.next = null;\n  }\n  return item;\n};\n\n\n/**\n * @param {goog.async.WorkItem} item\n */\ngoog.async.WorkQueue.prototype.returnUnused = function(item) {\n  goog.async.WorkQueue.freelist_.put(item);\n};\n\n\n/**\n * @return {goog.async.WorkItem}\n * @private\n */\ngoog.async.WorkQueue.prototype.getUnusedItem_ = function() {\n  return goog.async.WorkQueue.freelist_.get();\n};\n\n\n\n/**\n * @constructor\n * @final\n * @struct\n */\ngoog.async.WorkItem = function() {\n  /** @type {?function()} */\n  this.fn = null;\n  /** @type {?Object|null|undefined} */\n  this.scope = null;\n  /** @type {?goog.async.WorkItem} */\n  this.next = null;\n};\n\n\n/**\n * @param {function()} fn\n * @param {Object|null|undefined} scope\n */\ngoog.async.WorkItem.prototype.set = function(fn, scope) {\n  this.fn = fn;\n  this.scope = scope;\n  this.next = null;\n};\n\n\n/** Reset the work item so they don't prevent GC before reuse */\ngoog.async.WorkItem.prototype.reset = function() {\n  this.fn = null;\n  this.scope = null;\n  this.next = null;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\ngoog.provide('goog.async.run');\n\ngoog.require('goog.async.WorkQueue');\ngoog.require('goog.async.nextTick');\ngoog.require('goog.async.throwException');\n\n/**\n * @define {boolean} If true, use the global Promise to implement goog.async.run\n * assuming either the native, or polyfill version will be used. Does still\n * permit tests to use forceNextTick.\n */\ngoog.ASSUME_NATIVE_PROMISE = goog.define('goog.ASSUME_NATIVE_PROMISE', false);\n\n/**\n * Fires the provided callback just before the current callstack unwinds, or as\n * soon as possible after the current JS execution context.\n * @param {function(this:THIS)} callback\n * @param {THIS=} opt_context Object to use as the \"this value\" when calling\n *     the provided function.\n * @template THIS\n */\ngoog.async.run = function(callback, opt_context) {\n  if (!goog.async.run.schedule_) {\n    goog.async.run.initializeRunner_();\n  }\n  if (!goog.async.run.workQueueScheduled_) {\n    // Nothing is currently scheduled, schedule it now.\n    goog.async.run.schedule_();\n    goog.async.run.workQueueScheduled_ = true;\n  }\n\n  goog.async.run.workQueue_.add(callback, opt_context);\n};\n\n\n/**\n * Initializes the function to use to process the work queue.\n * @private\n */\ngoog.async.run.initializeRunner_ = function() {\n  if (goog.ASSUME_NATIVE_PROMISE ||\n      (goog.global.Promise && goog.global.Promise.resolve)) {\n    // Use goog.global.Promise instead of just Promise because the relevant\n    // externs may be missing, and don't alias it because this could confuse the\n    // compiler into thinking the polyfill is required when it should be treated\n    // as optional.\n    var promise = goog.global.Promise.resolve(undefined);\n    goog.async.run.schedule_ = function() {\n      promise.then(goog.async.run.processWorkQueue);\n    };\n  } else {\n    goog.async.run.schedule_ = function() {\n      goog.async.nextTick(goog.async.run.processWorkQueue);\n    };\n  }\n};\n\n\n/**\n * Forces goog.async.run to use nextTick instead of Promise.\n *\n * This should only be done in unit tests. It's useful because MockClock\n * replaces nextTick, but not the browser Promise implementation, so it allows\n * Promise-based code to be tested with MockClock.\n *\n * However, we also want to run promises if the MockClock is no longer in\n * control so we schedule a backup \"setTimeout\" to the unmocked timeout if\n * provided.\n *\n * @param {function(function())=} opt_realSetTimeout\n */\ngoog.async.run.forceNextTick = function(opt_realSetTimeout) {\n  goog.async.run.schedule_ = function() {\n    goog.async.nextTick(goog.async.run.processWorkQueue);\n    if (opt_realSetTimeout) {\n      opt_realSetTimeout(goog.async.run.processWorkQueue);\n    }\n  };\n};\n\n\n/**\n * The function used to schedule work asynchronousely.\n * @private {function()}\n */\ngoog.async.run.schedule_;\n\n\n/** @private {boolean} */\ngoog.async.run.workQueueScheduled_ = false;\n\n\n/** @private {!goog.async.WorkQueue} */\ngoog.async.run.workQueue_ = new goog.async.WorkQueue();\n\n\nif (goog.DEBUG) {\n  /**\n   * Reset the work queue. Only available for tests in debug mode.\n   */\n  goog.async.run.resetQueue = function() {\n    goog.async.run.workQueueScheduled_ = false;\n    goog.async.run.workQueue_ = new goog.async.WorkQueue();\n  };\n}\n\n\n/**\n * Run any pending goog.async.run work items. This function is not intended\n * for general use, but for use by entry point handlers to run items ahead of\n * goog.async.nextTick.\n */\ngoog.async.run.processWorkQueue = function() {\n  // NOTE: additional work queue items may be added while processing.\n  var item = null;\n  while (item = goog.async.run.workQueue_.remove()) {\n    try {\n      item.fn.call(item.scope);\n    } catch (e) {\n      goog.async.throwException(e);\n    }\n    goog.async.run.workQueue_.returnUnused(item);\n  }\n\n  // There are no more work items, allow processing to be scheduled again.\n  goog.async.run.workQueueScheduled_ = false;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Utilities for manipulating arrays.\n */\n\n\ngoog.module('goog.array');\ngoog.module.declareLegacyNamespace();\n\nconst asserts = goog.require('goog.asserts');\n\n\n/**\n * @define {boolean} NATIVE_ARRAY_PROTOTYPES indicates whether the code should\n * rely on Array.prototype functions, if available.\n *\n * The Array.prototype functions can be defined by external libraries like\n * Prototype and setting this flag to false forces closure to use its own\n * goog.array implementation.\n *\n * If your javascript can be loaded by a third party site and you are wary about\n * relying on the prototype functions, specify\n * \"--define goog.NATIVE_ARRAY_PROTOTYPES=false\" to the JSCompiler.\n *\n * Setting goog.TRUSTED_SITE to false will automatically set\n * NATIVE_ARRAY_PROTOTYPES to false.\n */\ngoog.NATIVE_ARRAY_PROTOTYPES =\n    goog.define('goog.NATIVE_ARRAY_PROTOTYPES', goog.TRUSTED_SITE);\n\n\n/**\n * @define {boolean} If true, JSCompiler will use the native implementation of\n * array functions where appropriate (e.g., `Array#filter`) and remove the\n * unused pure JS implementation.\n */\nconst ASSUME_NATIVE_FUNCTIONS = goog.define(\n    'goog.array.ASSUME_NATIVE_FUNCTIONS', goog.FEATURESET_YEAR > 2012);\nexports.ASSUME_NATIVE_FUNCTIONS = ASSUME_NATIVE_FUNCTIONS;\n\n\n/**\n * Returns the last element in an array without removing it.\n * Same as {@link goog.array.last}.\n * @param {IArrayLike<T>|string} array The array.\n * @return {T} Last item in array.\n * @template T\n */\nfunction peek(array) {\n  return array[array.length - 1];\n}\nexports.peek = peek;\n\n\n/**\n * Returns the last element in an array without removing it.\n * Same as {@link goog.array.peek}.\n * @param {IArrayLike<T>|string} array The array.\n * @return {T} Last item in array.\n * @template T\n */\nexports.last = peek;\n\n// NOTE(arv): Since most of the array functions are generic it allows you to\n// pass an array-like object. Strings have a length and are considered array-\n// like. However, the 'in' operator does not work on strings so we cannot just\n// use the array path even if the browser supports indexing into strings. We\n// therefore end up splitting the string.\n\n\n/**\n * Returns the index of the first element of an array with a specified value, or\n * -1 if the element is not present in the array.\n *\n * See {@link http://tinyurl.com/developer-mozilla-org-array-indexof}\n *\n * @param {IArrayLike<T>|string} arr The array to be searched.\n * @param {T} obj The object for which we are searching.\n * @param {number=} opt_fromIndex The index at which to start the search. If\n *     omitted the search starts at index 0.\n * @return {number} The index of the first matching array element.\n * @template T\n */\nconst indexOf = goog.NATIVE_ARRAY_PROTOTYPES &&\n        (ASSUME_NATIVE_FUNCTIONS || Array.prototype.indexOf) ?\n    function(arr, obj, opt_fromIndex) {\n      asserts.assert(arr.length != null);\n\n      return Array.prototype.indexOf.call(arr, obj, opt_fromIndex);\n    } :\n    function(arr, obj, opt_fromIndex) {\n      var fromIndex = opt_fromIndex == null ?\n          0 :\n          (opt_fromIndex < 0 ? Math.max(0, arr.length + opt_fromIndex) :\n                               opt_fromIndex);\n\n      if (typeof arr === 'string') {\n        // Array.prototype.indexOf uses === so only strings should be found.\n        if (typeof obj !== 'string' || obj.length != 1) {\n          return -1;\n        }\n        return arr.indexOf(obj, fromIndex);\n      }\n\n      for (var i = fromIndex; i < arr.length; i++) {\n        if (i in arr && arr[i] === obj) return i;\n      }\n      return -1;\n    };\nexports.indexOf = indexOf;\n\n\n/**\n * Returns the index of the last element of an array with a specified value, or\n * -1 if the element is not present in the array.\n *\n * See {@link http://tinyurl.com/developer-mozilla-org-array-lastindexof}\n *\n * @param {!IArrayLike<T>|string} arr The array to be searched.\n * @param {T} obj The object for which we are searching.\n * @param {?number=} opt_fromIndex The index at which to start the search. If\n *     omitted the search starts at the end of the array.\n * @return {number} The index of the last matching array element.\n * @template T\n */\nconst lastIndexOf = goog.NATIVE_ARRAY_PROTOTYPES &&\n        (ASSUME_NATIVE_FUNCTIONS || Array.prototype.lastIndexOf) ?\n    function(arr, obj, opt_fromIndex) {\n      asserts.assert(arr.length != null);\n\n      // Firefox treats undefined and null as 0 in the fromIndex argument which\n      // leads it to always return -1\n      var fromIndex = opt_fromIndex == null ? arr.length - 1 : opt_fromIndex;\n      return Array.prototype.lastIndexOf.call(arr, obj, fromIndex);\n    } :\n    function(arr, obj, opt_fromIndex) {\n      var fromIndex = opt_fromIndex == null ? arr.length - 1 : opt_fromIndex;\n\n      if (fromIndex < 0) {\n        fromIndex = Math.max(0, arr.length + fromIndex);\n      }\n\n      if (typeof arr === 'string') {\n        // Array.prototype.lastIndexOf uses === so only strings should be found.\n        if (typeof obj !== 'string' || obj.length != 1) {\n          return -1;\n        }\n        return arr.lastIndexOf(obj, fromIndex);\n      }\n\n      for (var i = fromIndex; i >= 0; i--) {\n        if (i in arr && arr[i] === obj) return i;\n      }\n      return -1;\n    };\nexports.lastIndexOf = lastIndexOf;\n\n\n/**\n * Calls a function for each element in an array. Skips holes in the array.\n * See {@link http://tinyurl.com/developer-mozilla-org-array-foreach}\n *\n * @param {IArrayLike<T>|string} arr Array or array like object over\n *     which to iterate.\n * @param {?function(this: S, T, number, ?): ?} f The function to call for every\n *     element. This function takes 3 arguments (the element, the index and the\n *     array). The return value is ignored.\n * @param {S=} opt_obj The object to be used as the value of 'this' within f.\n * @template T,S\n */\nconst forEach = goog.NATIVE_ARRAY_PROTOTYPES &&\n        (ASSUME_NATIVE_FUNCTIONS || Array.prototype.forEach) ?\n    function(arr, f, opt_obj) {\n      asserts.assert(arr.length != null);\n\n      Array.prototype.forEach.call(arr, f, opt_obj);\n    } :\n    function(arr, f, opt_obj) {\n      var l = arr.length;  // must be fixed during loop... see docs\n      var arr2 = (typeof arr === 'string') ? arr.split('') : arr;\n      for (var i = 0; i < l; i++) {\n        if (i in arr2) {\n          f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr);\n        }\n      }\n    };\nexports.forEach = forEach;\n\n\n/**\n * Calls a function for each element in an array, starting from the last\n * element rather than the first.\n *\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this: S, T, number, ?): ?} f The function to call for every\n *     element. This function\n *     takes 3 arguments (the element, the index and the array). The return\n *     value is ignored.\n * @param {S=} opt_obj The object to be used as the value of 'this'\n *     within f.\n * @template T,S\n */\nfunction forEachRight(arr, f, opt_obj) {\n  var l = arr.length;  // must be fixed during loop... see docs\n  var arr2 = (typeof arr === 'string') ? arr.split('') : arr;\n  for (var i = l - 1; i >= 0; --i) {\n    if (i in arr2) {\n      f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr);\n    }\n  }\n}\nexports.forEachRight = forEachRight;\n\n\n/**\n * Calls a function for each element in an array, and if the function returns\n * true adds the element to a new array.\n *\n * See {@link http://tinyurl.com/developer-mozilla-org-array-filter}\n *\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, T, number, ?):boolean} f The function to call for\n *     every element. This function\n *     takes 3 arguments (the element, the index and the array) and must\n *     return a Boolean. If the return value is true the element is added to the\n *     result array. If it is false the element is not included.\n * @param {S=} opt_obj The object to be used as the value of 'this'\n *     within f.\n * @return {!Array<T>} a new array in which only elements that passed the test\n *     are present.\n * @template T,S\n */\nconst filter = goog.NATIVE_ARRAY_PROTOTYPES &&\n        (ASSUME_NATIVE_FUNCTIONS || Array.prototype.filter) ?\n    function(arr, f, opt_obj) {\n      asserts.assert(arr.length != null);\n\n      return Array.prototype.filter.call(arr, f, opt_obj);\n    } :\n    function(arr, f, opt_obj) {\n      var l = arr.length;  // must be fixed during loop... see docs\n      var res = [];\n      var resLength = 0;\n      var arr2 = (typeof arr === 'string') ? arr.split('') : arr;\n      for (var i = 0; i < l; i++) {\n        if (i in arr2) {\n          var val = arr2[i];  // in case f mutates arr2\n          if (f.call(/** @type {?} */ (opt_obj), val, i, arr)) {\n            res[resLength++] = val;\n          }\n        }\n      }\n      return res;\n    };\nexports.filter = filter;\n\n\n/**\n * Calls a function for each element in an array and inserts the result into a\n * new array.\n *\n * See {@link http://tinyurl.com/developer-mozilla-org-array-map}\n *\n * @param {IArrayLike<VALUE>|string} arr Array or array like object\n *     over which to iterate.\n * @param {function(this:THIS, VALUE, number, ?): RESULT} f The function to call\n *     for every element. This function takes 3 arguments (the element,\n *     the index and the array) and should return something. The result will be\n *     inserted into a new array.\n * @param {THIS=} opt_obj The object to be used as the value of 'this' within f.\n * @return {!Array<RESULT>} a new array with the results from f.\n * @template THIS, VALUE, RESULT\n */\nconst map = goog.NATIVE_ARRAY_PROTOTYPES &&\n        (ASSUME_NATIVE_FUNCTIONS || Array.prototype.map) ?\n    function(arr, f, opt_obj) {\n      asserts.assert(arr.length != null);\n\n      return Array.prototype.map.call(arr, f, opt_obj);\n    } :\n    function(arr, f, opt_obj) {\n      var l = arr.length;  // must be fixed during loop... see docs\n      var res = new Array(l);\n      var arr2 = (typeof arr === 'string') ? arr.split('') : arr;\n      for (var i = 0; i < l; i++) {\n        if (i in arr2) {\n          res[i] = f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr);\n        }\n      }\n      return res;\n    };\nexports.map = map;\n\n\n/**\n * Passes every element of an array into a function and accumulates the result.\n *\n * See {@link http://tinyurl.com/developer-mozilla-org-array-reduce}\n * Note that this implementation differs from the native Array.prototype.reduce\n * in that the initial value is assumed to be defined (the MDN docs linked above\n * recommend not omitting this parameter, although it is technically optional).\n *\n * For example:\n * var a = [1, 2, 3, 4];\n * reduce(a, function(r, v, i, arr) {return r + v;}, 0);\n * returns 10\n *\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {function(this:S, R, T, number, ?) : R} f The function to call for\n *     every element. This function\n *     takes 4 arguments (the function's previous result or the initial value,\n *     the value of the current array element, the current array index, and the\n *     array itself)\n *     function(previousValue, currentValue, index, array).\n * @param {?} val The initial value to pass into the function on the first call.\n * @param {S=} opt_obj  The object to be used as the value of 'this'\n *     within f.\n * @return {R} Result of evaluating f repeatedly across the values of the array.\n * @template T,S,R\n */\nconst reduce = goog.NATIVE_ARRAY_PROTOTYPES &&\n        (ASSUME_NATIVE_FUNCTIONS || Array.prototype.reduce) ?\n    function(arr, f, val, opt_obj) {\n      asserts.assert(arr.length != null);\n      if (opt_obj) {\n        f = goog.bind(f, opt_obj);\n      }\n      return Array.prototype.reduce.call(arr, f, val);\n    } :\n    function(arr, f, val, opt_obj) {\n      var rval = val;\n      forEach(arr, function(val, index) {\n        rval = f.call(/** @type {?} */ (opt_obj), rval, val, index, arr);\n      });\n      return rval;\n    };\nexports.reduce = reduce;\n\n\n/**\n * Passes every element of an array into a function and accumulates the result,\n * starting from the last element and working towards the first.\n *\n * See {@link http://tinyurl.com/developer-mozilla-org-array-reduceright}\n *\n * For example:\n * var a = ['a', 'b', 'c'];\n * reduceRight(a, function(r, v, i, arr) {return r + v;}, '');\n * returns 'cba'\n *\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, R, T, number, ?) : R} f The function to call for\n *     every element. This function\n *     takes 4 arguments (the function's previous result or the initial value,\n *     the value of the current array element, the current array index, and the\n *     array itself)\n *     function(previousValue, currentValue, index, array).\n * @param {?} val The initial value to pass into the function on the first call.\n * @param {S=} opt_obj The object to be used as the value of 'this'\n *     within f.\n * @return {R} Object returned as a result of evaluating f repeatedly across the\n *     values of the array.\n * @template T,S,R\n */\nconst reduceRight = goog.NATIVE_ARRAY_PROTOTYPES &&\n        (ASSUME_NATIVE_FUNCTIONS || Array.prototype.reduceRight) ?\n    function(arr, f, val, opt_obj) {\n      asserts.assert(arr.length != null);\n      asserts.assert(f != null);\n      if (opt_obj) {\n        f = goog.bind(f, opt_obj);\n      }\n      return Array.prototype.reduceRight.call(arr, f, val);\n    } :\n    function(arr, f, val, opt_obj) {\n      var rval = val;\n      forEachRight(arr, function(val, index) {\n        rval = f.call(/** @type {?} */ (opt_obj), rval, val, index, arr);\n      });\n      return rval;\n    };\nexports.reduceRight = reduceRight;\n\n\n/**\n * Calls f for each element of an array. If any call returns true, some()\n * returns true (without checking the remaining elements). If all calls\n * return false, some() returns false.\n *\n * See {@link http://tinyurl.com/developer-mozilla-org-array-some}\n *\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, T, number, ?) : boolean} f The function to call for\n *     for every element. This function takes 3 arguments (the element, the\n *     index and the array) and should return a boolean.\n * @param {S=} opt_obj  The object to be used as the value of 'this'\n *     within f.\n * @return {boolean} true if any element passes the test.\n * @template T,S\n */\nconst some = goog.NATIVE_ARRAY_PROTOTYPES &&\n        (ASSUME_NATIVE_FUNCTIONS || Array.prototype.some) ?\n    function(arr, f, opt_obj) {\n      asserts.assert(arr.length != null);\n\n      return Array.prototype.some.call(arr, f, opt_obj);\n    } :\n    function(arr, f, opt_obj) {\n      var l = arr.length;  // must be fixed during loop... see docs\n      var arr2 = (typeof arr === 'string') ? arr.split('') : arr;\n      for (var i = 0; i < l; i++) {\n        if (i in arr2 && f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr)) {\n          return true;\n        }\n      }\n      return false;\n    };\nexports.some = some;\n\n\n/**\n * Call f for each element of an array. If all calls return true, every()\n * returns true. If any call returns false, every() returns false and\n * does not continue to check the remaining elements.\n *\n * See {@link http://tinyurl.com/developer-mozilla-org-array-every}\n *\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, T, number, ?) : boolean} f The function to call for\n *     for every element. This function takes 3 arguments (the element, the\n *     index and the array) and should return a boolean.\n * @param {S=} opt_obj The object to be used as the value of 'this'\n *     within f.\n * @return {boolean} false if any element fails the test.\n * @template T,S\n */\nconst every = goog.NATIVE_ARRAY_PROTOTYPES &&\n        (ASSUME_NATIVE_FUNCTIONS || Array.prototype.every) ?\n    function(arr, f, opt_obj) {\n      asserts.assert(arr.length != null);\n\n      return Array.prototype.every.call(arr, f, opt_obj);\n    } :\n    function(arr, f, opt_obj) {\n      var l = arr.length;  // must be fixed during loop... see docs\n      var arr2 = (typeof arr === 'string') ? arr.split('') : arr;\n      for (var i = 0; i < l; i++) {\n        if (i in arr2 && !f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr)) {\n          return false;\n        }\n      }\n      return true;\n    };\nexports.every = every;\n\n\n/**\n * Counts the array elements that fulfill the predicate, i.e. for which the\n * callback function returns true. Skips holes in the array.\n *\n * @param {!IArrayLike<T>|string} arr Array or array like object\n *     over which to iterate.\n * @param {function(this: S, T, number, ?): boolean} f The function to call for\n *     every element. Takes 3 arguments (the element, the index and the array).\n * @param {S=} opt_obj The object to be used as the value of 'this' within f.\n * @return {number} The number of the matching elements.\n * @template T,S\n */\nfunction count(arr, f, opt_obj) {\n  var count = 0;\n  forEach(arr, function(element, index, arr) {\n    if (f.call(/** @type {?} */ (opt_obj), element, index, arr)) {\n      ++count;\n    }\n  }, opt_obj);\n  return count;\n}\nexports.count = count;\n\n\n/**\n * Search an array for the first element that satisfies a given condition and\n * return that element.\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, T, number, ?) : boolean} f The function to call\n *     for every element. This function takes 3 arguments (the element, the\n *     index and the array) and should return a boolean.\n * @param {S=} opt_obj An optional \"this\" context for the function.\n * @return {T|null} The first array element that passes the test, or null if no\n *     element is found.\n * @template T,S\n */\nfunction find(arr, f, opt_obj) {\n  var i = findIndex(arr, f, opt_obj);\n  return i < 0 ? null : typeof arr === 'string' ? arr.charAt(i) : arr[i];\n}\nexports.find = find;\n\n\n/**\n * Search an array for the first element that satisfies a given condition and\n * return its index.\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, T, number, ?) : boolean} f The function to call for\n *     every element. This function\n *     takes 3 arguments (the element, the index and the array) and should\n *     return a boolean.\n * @param {S=} opt_obj An optional \"this\" context for the function.\n * @return {number} The index of the first array element that passes the test,\n *     or -1 if no element is found.\n * @template T,S\n */\nfunction findIndex(arr, f, opt_obj) {\n  var l = arr.length;  // must be fixed during loop... see docs\n  var arr2 = (typeof arr === 'string') ? arr.split('') : arr;\n  for (var i = 0; i < l; i++) {\n    if (i in arr2 && f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr)) {\n      return i;\n    }\n  }\n  return -1;\n}\nexports.findIndex = findIndex;\n\n\n/**\n * Search an array (in reverse order) for the last element that satisfies a\n * given condition and return that element.\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, T, number, ?) : boolean} f The function to call\n *     for every element. This function\n *     takes 3 arguments (the element, the index and the array) and should\n *     return a boolean.\n * @param {S=} opt_obj An optional \"this\" context for the function.\n * @return {T|null} The last array element that passes the test, or null if no\n *     element is found.\n * @template T,S\n */\nfunction findRight(arr, f, opt_obj) {\n  var i = findIndexRight(arr, f, opt_obj);\n  return i < 0 ? null : typeof arr === 'string' ? arr.charAt(i) : arr[i];\n}\nexports.findRight = findRight;\n\n\n/**\n * Search an array (in reverse order) for the last element that satisfies a\n * given condition and return its index.\n * @param {IArrayLike<T>|string} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, T, number, ?) : boolean} f The function to call\n *     for every element. This function\n *     takes 3 arguments (the element, the index and the array) and should\n *     return a boolean.\n * @param {S=} opt_obj An optional \"this\" context for the function.\n * @return {number} The index of the last array element that passes the test,\n *     or -1 if no element is found.\n * @template T,S\n */\nfunction findIndexRight(arr, f, opt_obj) {\n  var l = arr.length;  // must be fixed during loop... see docs\n  var arr2 = (typeof arr === 'string') ? arr.split('') : arr;\n  for (var i = l - 1; i >= 0; i--) {\n    if (i in arr2 && f.call(/** @type {?} */ (opt_obj), arr2[i], i, arr)) {\n      return i;\n    }\n  }\n  return -1;\n}\nexports.findIndexRight = findIndexRight;\n\n\n/**\n * Whether the array contains the given object.\n * @param {IArrayLike<?>|string} arr The array to test for the presence of the\n *     element.\n * @param {*} obj The object for which to test.\n * @return {boolean} true if obj is present.\n */\nfunction contains(arr, obj) {\n  return indexOf(arr, obj) >= 0;\n}\nexports.contains = contains;\n\n\n/**\n * Whether the array is empty.\n * @param {IArrayLike<?>|string} arr The array to test.\n * @return {boolean} true if empty.\n */\nfunction isEmpty(arr) {\n  return arr.length == 0;\n}\nexports.isEmpty = isEmpty;\n\n\n/**\n * Clears the array.\n * @param {IArrayLike<?>} arr Array or array like object to clear.\n */\nfunction clear(arr) {\n  // For non real arrays we don't have the magic length so we delete the\n  // indices.\n  if (!Array.isArray(arr)) {\n    for (var i = arr.length - 1; i >= 0; i--) {\n      delete arr[i];\n    }\n  }\n  arr.length = 0;\n}\nexports.clear = clear;\n\n\n/**\n * Pushes an item into an array, if it's not already in the array.\n * @param {Array<T>} arr Array into which to insert the item.\n * @param {T} obj Value to add.\n * @template T\n */\nfunction insert(arr, obj) {\n  if (!contains(arr, obj)) {\n    arr.push(obj);\n  }\n}\nexports.insert = insert;\n\n\n/**\n * Inserts an object at the given index of the array.\n * @param {IArrayLike<?>} arr The array to modify.\n * @param {*} obj The object to insert.\n * @param {number=} opt_i The index at which to insert the object. If omitted,\n *      treated as 0. A negative index is counted from the end of the array.\n */\nfunction insertAt(arr, obj, opt_i) {\n  splice(arr, opt_i, 0, obj);\n}\nexports.insertAt = insertAt;\n\n\n/**\n * Inserts at the given index of the array, all elements of another array.\n * @param {IArrayLike<?>} arr The array to modify.\n * @param {IArrayLike<?>} elementsToAdd The array of elements to add.\n * @param {number=} opt_i The index at which to insert the object. If omitted,\n *      treated as 0. A negative index is counted from the end of the array.\n */\nfunction insertArrayAt(arr, elementsToAdd, opt_i) {\n  goog.partial(splice, arr, opt_i, 0).apply(null, elementsToAdd);\n}\nexports.insertArrayAt = insertArrayAt;\n\n\n/**\n * Inserts an object into an array before a specified object.\n * @param {Array<T>} arr The array to modify.\n * @param {T} obj The object to insert.\n * @param {T=} opt_obj2 The object before which obj should be inserted. If obj2\n *     is omitted or not found, obj is inserted at the end of the array.\n * @template T\n */\nfunction insertBefore(arr, obj, opt_obj2) {\n  var i;\n  if (arguments.length == 2 || (i = indexOf(arr, opt_obj2)) < 0) {\n    arr.push(obj);\n  } else {\n    insertAt(arr, obj, i);\n  }\n}\nexports.insertBefore = insertBefore;\n\n\n/**\n * Removes the first occurrence of a particular value from an array.\n * @param {IArrayLike<T>} arr Array from which to remove\n *     value.\n * @param {T} obj Object to remove.\n * @return {boolean} True if an element was removed.\n * @template T\n */\nfunction remove(arr, obj) {\n  var i = indexOf(arr, obj);\n  var rv;\n  if ((rv = i >= 0)) {\n    removeAt(arr, i);\n  }\n  return rv;\n}\nexports.remove = remove;\n\n\n/**\n * Removes the last occurrence of a particular value from an array.\n * @param {!IArrayLike<T>} arr Array from which to remove value.\n * @param {T} obj Object to remove.\n * @return {boolean} True if an element was removed.\n * @template T\n */\nfunction removeLast(arr, obj) {\n  var i = lastIndexOf(arr, obj);\n  if (i >= 0) {\n    removeAt(arr, i);\n    return true;\n  }\n  return false;\n}\nexports.removeLast = removeLast;\n\n\n/**\n * Removes from an array the element at index i\n * @param {IArrayLike<?>} arr Array or array like object from which to\n *     remove value.\n * @param {number} i The index to remove.\n * @return {boolean} True if an element was removed.\n */\nfunction removeAt(arr, i) {\n  asserts.assert(arr.length != null);\n\n  // use generic form of splice\n  // splice returns the removed items and if successful the length of that\n  // will be 1\n  return Array.prototype.splice.call(arr, i, 1).length == 1;\n}\nexports.removeAt = removeAt;\n\n\n/**\n * Removes the first value that satisfies the given condition.\n * @param {IArrayLike<T>} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, T, number, ?) : boolean} f The function to call\n *     for every element. This function\n *     takes 3 arguments (the element, the index and the array) and should\n *     return a boolean.\n * @param {S=} opt_obj An optional \"this\" context for the function.\n * @return {boolean} True if an element was removed.\n * @template T,S\n */\nfunction removeIf(arr, f, opt_obj) {\n  var i = findIndex(arr, f, opt_obj);\n  if (i >= 0) {\n    removeAt(arr, i);\n    return true;\n  }\n  return false;\n}\nexports.removeIf = removeIf;\n\n\n/**\n * Removes all values that satisfy the given condition.\n * @param {IArrayLike<T>} arr Array or array\n *     like object over which to iterate.\n * @param {?function(this:S, T, number, ?) : boolean} f The function to call\n *     for every element. This function\n *     takes 3 arguments (the element, the index and the array) and should\n *     return a boolean.\n * @param {S=} opt_obj An optional \"this\" context for the function.\n * @return {number} The number of items removed\n * @template T,S\n */\nfunction removeAllIf(arr, f, opt_obj) {\n  var removedCount = 0;\n  forEachRight(arr, function(val, index) {\n    if (f.call(/** @type {?} */ (opt_obj), val, index, arr)) {\n      if (removeAt(arr, index)) {\n        removedCount++;\n      }\n    }\n  });\n  return removedCount;\n}\nexports.removeAllIf = removeAllIf;\n\n\n/**\n * Returns a new array that is the result of joining the arguments.  If arrays\n * are passed then their items are added, however, if non-arrays are passed they\n * will be added to the return array as is.\n *\n * Note that ArrayLike objects will be added as is, rather than having their\n * items added.\n *\n * concat([1, 2], [3, 4]) -> [1, 2, 3, 4]\n * concat(0, [1, 2]) -> [0, 1, 2]\n * concat([1, 2], null) -> [1, 2, null]\n *\n * There is bug in all current versions of IE (6, 7 and 8) where arrays created\n * in an iframe become corrupted soon (not immediately) after the iframe is\n * destroyed. This is common if loading data via goog.net.IframeIo, for example.\n * This corruption only affects the concat method which will start throwing\n * Catastrophic Errors (#-2147418113).\n *\n * See http://endoflow.com/scratch/corrupted-arrays.html for a test case.\n *\n * Internally goog.array should use this, so that all methods will continue to\n * work on these broken array objects.\n *\n * @param {...*} var_args Items to concatenate.  Arrays will have each item\n *     added, while primitives and objects will be added as is.\n * @return {!Array<?>} The new resultant array.\n */\nfunction concat(var_args) {\n  return Array.prototype.concat.apply([], arguments);\n}\nexports.concat = concat;\n\n\n/**\n * Returns a new array that contains the contents of all the arrays passed.\n * @param {...!Array<T>} var_args\n * @return {!Array<T>}\n * @template T\n */\nfunction join(var_args) {\n  return Array.prototype.concat.apply([], arguments);\n}\nexports.join = join;\n\n\n/**\n * Converts an object to an array.\n * @param {IArrayLike<T>|string} object  The object to convert to an\n *     array.\n * @return {!Array<T>} The object converted into an array. If object has a\n *     length property, every property indexed with a non-negative number\n *     less than length will be included in the result. If object does not\n *     have a length property, an empty array will be returned.\n * @template T\n */\nfunction toArray(object) {\n  var length = object.length;\n\n  // If length is not a number the following is false. This case is kept for\n  // backwards compatibility since there are callers that pass objects that are\n  // not array like.\n  if (length > 0) {\n    var rv = new Array(length);\n    for (var i = 0; i < length; i++) {\n      rv[i] = object[i];\n    }\n    return rv;\n  }\n  return [];\n}\nexports.toArray = toArray;\n\n\n/**\n * Does a shallow copy of an array.\n * @param {IArrayLike<T>|string} arr  Array or array-like object to\n *     clone.\n * @return {!Array<T>} Clone of the input array.\n * @template T\n */\nconst clone = toArray;\nexports.clone = clone;\n\n\n/**\n * Extends an array with another array, element, or \"array like\" object.\n * This function operates 'in-place', it does not create a new Array.\n *\n * Example:\n * var a = [];\n * extend(a, [0, 1]);\n * a; // [0, 1]\n * extend(a, 2);\n * a; // [0, 1, 2]\n *\n * @param {Array<VALUE>} arr1  The array to modify.\n * @param {...(IArrayLike<VALUE>|VALUE)} var_args The elements or arrays of\n *     elements to add to arr1.\n * @template VALUE\n */\nfunction extend(arr1, var_args) {\n  for (var i = 1; i < arguments.length; i++) {\n    var arr2 = arguments[i];\n    if (goog.isArrayLike(arr2)) {\n      var len1 = arr1.length || 0;\n      var len2 = arr2.length || 0;\n      arr1.length = len1 + len2;\n      for (var j = 0; j < len2; j++) {\n        arr1[len1 + j] = arr2[j];\n      }\n    } else {\n      arr1.push(arr2);\n    }\n  }\n}\nexports.extend = extend;\n\n\n/**\n * Adds or removes elements from an array. This is a generic version of Array\n * splice. This means that it might work on other objects similar to arrays,\n * such as the arguments object.\n *\n * @param {IArrayLike<T>} arr The array to modify.\n * @param {number|undefined} index The index at which to start changing the\n *     array. If not defined, treated as 0.\n * @param {number} howMany How many elements to remove (0 means no removal. A\n *     value below 0 is treated as zero and so is any other non number. Numbers\n *     are floored).\n * @param {...T} var_args Optional, additional elements to insert into the\n *     array.\n * @return {!Array<T>} the removed elements.\n * @template T\n */\nfunction splice(arr, index, howMany, var_args) {\n  asserts.assert(arr.length != null);\n\n  return Array.prototype.splice.apply(arr, slice(arguments, 1));\n}\nexports.splice = splice;\n\n\n/**\n * Returns a new array from a segment of an array. This is a generic version of\n * Array slice. This means that it might work on other objects similar to\n * arrays, such as the arguments object.\n *\n * @param {IArrayLike<T>|string} arr The array from\n * which to copy a segment.\n * @param {number} start The index of the first element to copy.\n * @param {number=} opt_end The index after the last element to copy.\n * @return {!Array<T>} A new array containing the specified segment of the\n *     original array.\n * @template T\n */\nfunction slice(arr, start, opt_end) {\n  asserts.assert(arr.length != null);\n\n  // passing 1 arg to slice is not the same as passing 2 where the second is\n  // null or undefined (in that case the second argument is treated as 0).\n  // we could use slice on the arguments object and then use apply instead of\n  // testing the length\n  if (arguments.length <= 2) {\n    return Array.prototype.slice.call(arr, start);\n  } else {\n    return Array.prototype.slice.call(arr, start, opt_end);\n  }\n}\nexports.slice = slice;\n\n\n/**\n * Removes all duplicates from an array (retaining only the first\n * occurrence of each array element).  This function modifies the\n * array in place and doesn't change the order of the non-duplicate items.\n *\n * For objects, duplicates are identified as having the same unique ID as\n * defined by {@link goog.getUid}.\n *\n * Alternatively you can specify a custom hash function that returns a unique\n * value for each item in the array it should consider unique.\n *\n * Runtime: N,\n * Worstcase space: 2N (no dupes)\n *\n * @param {IArrayLike<T>} arr The array from which to remove\n *     duplicates.\n * @param {Array=} opt_rv An optional array in which to return the results,\n *     instead of performing the removal inplace.  If specified, the original\n *     array will remain unchanged.\n * @param {function(T):string=} opt_hashFn An optional function to use to\n *     apply to every item in the array. This function should return a unique\n *     value for each item in the array it should consider unique.\n * @template T\n */\nfunction removeDuplicates(arr, opt_rv, opt_hashFn) {\n  var returnArray = opt_rv || arr;\n  var defaultHashFn = function(item) {\n    // Prefix each type with a single character representing the type to\n    // prevent conflicting keys (e.g. true and 'true').\n    return goog.isObject(item) ? 'o' + goog.getUid(item) :\n                                 (typeof item).charAt(0) + item;\n  };\n  var hashFn = opt_hashFn || defaultHashFn;\n\n  var seen = {}, cursorInsert = 0, cursorRead = 0;\n  while (cursorRead < arr.length) {\n    var current = arr[cursorRead++];\n    var key = hashFn(current);\n    if (!Object.prototype.hasOwnProperty.call(seen, key)) {\n      seen[key] = true;\n      returnArray[cursorInsert++] = current;\n    }\n  }\n  returnArray.length = cursorInsert;\n}\nexports.removeDuplicates = removeDuplicates;\n\n\n/**\n * Searches the specified array for the specified target using the binary\n * search algorithm.  If no opt_compareFn is specified, elements are compared\n * using <code>defaultCompare</code>, which compares the elements\n * using the built in < and > operators.  This will produce the expected\n * behavior for homogeneous arrays of String(s) and Number(s). The array\n * specified <b>must</b> be sorted in ascending order (as defined by the\n * comparison function).  If the array is not sorted, results are undefined.\n * If the array contains multiple instances of the specified target value, the\n * left-most instance will be found.\n *\n * Runtime: O(log n)\n *\n * @param {IArrayLike<VALUE>} arr The array to be searched.\n * @param {TARGET} target The sought value.\n * @param {function(TARGET, VALUE): number=} opt_compareFn Optional comparison\n *     function by which the array is ordered. Should take 2 arguments to\n *     compare, the target value and an element from your array, and return a\n *     negative number, zero, or a positive number depending on whether the\n *     first argument is less than, equal to, or greater than the second.\n * @return {number} Lowest index of the target value if found, otherwise\n *     (-(insertion point) - 1). The insertion point is where the value should\n *     be inserted into arr to preserve the sorted property.  Return value >= 0\n *     iff target is found.\n * @template TARGET, VALUE\n */\nfunction binarySearch(arr, target, opt_compareFn) {\n  return binarySearch_(\n      arr, opt_compareFn || defaultCompare, false /* isEvaluator */, target);\n}\nexports.binarySearch = binarySearch;\n\n\n/**\n * Selects an index in the specified array using the binary search algorithm.\n * The evaluator receives an element and determines whether the desired index\n * is before, at, or after it.  The evaluator must be consistent (formally,\n * map(map(arr, evaluator, opt_obj), goog.math.sign)\n * must be monotonically non-increasing).\n *\n * Runtime: O(log n)\n *\n * @param {IArrayLike<VALUE>} arr The array to be searched.\n * @param {function(this:THIS, VALUE, number, ?): number} evaluator\n *     Evaluator function that receives 3 arguments (the element, the index and\n *     the array). Should return a negative number, zero, or a positive number\n *     depending on whether the desired index is before, at, or after the\n *     element passed to it.\n * @param {THIS=} opt_obj The object to be used as the value of 'this'\n *     within evaluator.\n * @return {number} Index of the leftmost element matched by the evaluator, if\n *     such exists; otherwise (-(insertion point) - 1). The insertion point is\n *     the index of the first element for which the evaluator returns negative,\n *     or arr.length if no such element exists. The return value is non-negative\n *     iff a match is found.\n * @template THIS, VALUE\n */\nfunction binarySelect(arr, evaluator, opt_obj) {\n  return binarySearch_(\n      arr, evaluator, true /* isEvaluator */, undefined /* opt_target */,\n      opt_obj);\n}\nexports.binarySelect = binarySelect;\n\n\n/**\n * Implementation of a binary search algorithm which knows how to use both\n * comparison functions and evaluators. If an evaluator is provided, will call\n * the evaluator with the given optional data object, conforming to the\n * interface defined in binarySelect. Otherwise, if a comparison function is\n * provided, will call the comparison function against the given data object.\n *\n * This implementation purposefully does not use goog.bind or goog.partial for\n * performance reasons.\n *\n * Runtime: O(log n)\n *\n * @param {IArrayLike<?>} arr The array to be searched.\n * @param {function(?, ?, ?): number | function(?, ?): number} compareFn\n *     Either an evaluator or a comparison function, as defined by binarySearch\n *     and binarySelect above.\n * @param {boolean} isEvaluator Whether the function is an evaluator or a\n *     comparison function.\n * @param {?=} opt_target If the function is a comparison function, then\n *     this is the target to binary search for.\n * @param {Object=} opt_selfObj If the function is an evaluator, this is an\n *     optional this object for the evaluator.\n * @return {number} Lowest index of the target value if found, otherwise\n *     (-(insertion point) - 1). The insertion point is where the value should\n *     be inserted into arr to preserve the sorted property.  Return value >= 0\n *     iff target is found.\n * @private\n */\nfunction binarySearch_(arr, compareFn, isEvaluator, opt_target, opt_selfObj) {\n  var left = 0;            // inclusive\n  var right = arr.length;  // exclusive\n  var found;\n  while (left < right) {\n    var middle = left + ((right - left) >>> 1);\n    var compareResult;\n    if (isEvaluator) {\n      compareResult = compareFn.call(opt_selfObj, arr[middle], middle, arr);\n    } else {\n      // NOTE(dimvar): To avoid this cast, we'd have to use function overloading\n      // for the type of binarySearch_, which the type system can't express yet.\n      compareResult = /** @type {function(?, ?): number} */ (compareFn)(\n          opt_target, arr[middle]);\n    }\n    if (compareResult > 0) {\n      left = middle + 1;\n    } else {\n      right = middle;\n      // We are looking for the lowest index so we can't return immediately.\n      found = !compareResult;\n    }\n  }\n  // left is the index if found, or the insertion point otherwise.\n  // Avoiding bitwise not operator, as that causes a loss in precision for array\n  // indexes outside the bounds of a 32-bit signed integer.  Array indexes have\n  // a maximum value of 2^32-2 https://tc39.es/ecma262/#array-index\n  return found ? left : -left - 1;\n}\n\n\n/**\n * Sorts the specified array into ascending order.  If no opt_compareFn is\n * specified, elements are compared using\n * <code>defaultCompare</code>, which compares the elements using\n * the built in < and > operators.  This will produce the expected behavior\n * for homogeneous arrays of String(s) and Number(s), unlike the native sort,\n * but will give unpredictable results for heterogeneous lists of strings and\n * numbers with different numbers of digits.\n *\n * This sort is not guaranteed to be stable.\n *\n * Runtime: Same as `Array.prototype.sort`\n *\n * @param {Array<T>} arr The array to be sorted.\n * @param {?function(T,T):number=} opt_compareFn Optional comparison\n *     function by which the\n *     array is to be ordered. Should take 2 arguments to compare, and return a\n *     negative number, zero, or a positive number depending on whether the\n *     first argument is less than, equal to, or greater than the second.\n * @template T\n */\nfunction sort(arr, opt_compareFn) {\n  // TODO(arv): Update type annotation since null is not accepted.\n  arr.sort(opt_compareFn || defaultCompare);\n}\nexports.sort = sort;\n\n\n/**\n * Sorts the specified array into ascending order in a stable way.  If no\n * opt_compareFn is specified, elements are compared using\n * <code>defaultCompare</code>, which compares the elements using\n * the built in < and > operators.  This will produce the expected behavior\n * for homogeneous arrays of String(s) and Number(s).\n *\n * Runtime: Same as `Array.prototype.sort`, plus an additional\n * O(n) overhead of copying the array twice.\n *\n * @param {Array<T>} arr The array to be sorted.\n * @param {?function(T, T): number=} opt_compareFn Optional comparison function\n *     by which the array is to be ordered. Should take 2 arguments to compare,\n *     and return a negative number, zero, or a positive number depending on\n *     whether the first argument is less than, equal to, or greater than the\n *     second.\n * @template T\n */\nfunction stableSort(arr, opt_compareFn) {\n  var compArr = new Array(arr.length);\n  for (var i = 0; i < arr.length; i++) {\n    compArr[i] = {index: i, value: arr[i]};\n  }\n  var valueCompareFn = opt_compareFn || defaultCompare;\n  function stableCompareFn(obj1, obj2) {\n    return valueCompareFn(obj1.value, obj2.value) || obj1.index - obj2.index;\n  }\n  sort(compArr, stableCompareFn);\n  for (var i = 0; i < arr.length; i++) {\n    arr[i] = compArr[i].value;\n  }\n}\nexports.stableSort = stableSort;\n\n\n/**\n * Sort the specified array into ascending order based on item keys\n * returned by the specified key function.\n * If no opt_compareFn is specified, the keys are compared in ascending order\n * using <code>defaultCompare</code>.\n *\n * Runtime: O(S(f(n)), where S is runtime of <code>sort</code>\n * and f(n) is runtime of the key function.\n *\n * @param {Array<T>} arr The array to be sorted.\n * @param {function(T): K} keyFn Function taking array element and returning\n *     a key used for sorting this element.\n * @param {?function(K, K): number=} opt_compareFn Optional comparison function\n *     by which the keys are to be ordered. Should take 2 arguments to compare,\n *     and return a negative number, zero, or a positive number depending on\n *     whether the first argument is less than, equal to, or greater than the\n *     second.\n * @template T,K\n */\nfunction sortByKey(arr, keyFn, opt_compareFn) {\n  var keyCompareFn = opt_compareFn || defaultCompare;\n  sort(arr, function(a, b) {\n    return keyCompareFn(keyFn(a), keyFn(b));\n  });\n}\nexports.sortByKey = sortByKey;\n\n\n/**\n * Sorts an array of objects by the specified object key and compare\n * function. If no compare function is provided, the key values are\n * compared in ascending order using <code>defaultCompare</code>.\n * This won't work for keys that get renamed by the compiler. So use\n * {'foo': 1, 'bar': 2} rather than {foo: 1, bar: 2}.\n * @param {Array<Object>} arr An array of objects to sort.\n * @param {string} key The object key to sort by.\n * @param {Function=} opt_compareFn The function to use to compare key\n *     values.\n */\nfunction sortObjectsByKey(arr, key, opt_compareFn) {\n  sortByKey(arr, function(obj) {\n    return obj[key];\n  }, opt_compareFn);\n}\nexports.sortObjectsByKey = sortObjectsByKey;\n\n\n/**\n * Tells if the array is sorted.\n * @param {!IArrayLike<T>} arr The array.\n * @param {?function(T,T):number=} opt_compareFn Function to compare the\n *     array elements.\n *     Should take 2 arguments to compare, and return a negative number, zero,\n *     or a positive number depending on whether the first argument is less\n *     than, equal to, or greater than the second.\n * @param {boolean=} opt_strict If true no equal elements are allowed.\n * @return {boolean} Whether the array is sorted.\n * @template T\n */\nfunction isSorted(arr, opt_compareFn, opt_strict) {\n  var compare = opt_compareFn || defaultCompare;\n  for (var i = 1; i < arr.length; i++) {\n    var compareResult = compare(arr[i - 1], arr[i]);\n    if (compareResult > 0 || compareResult == 0 && opt_strict) {\n      return false;\n    }\n  }\n  return true;\n}\nexports.isSorted = isSorted;\n\n\n/**\n * Compares two arrays for equality. Two arrays are considered equal if they\n * have the same length and their corresponding elements are equal according to\n * the comparison function.\n *\n * @param {IArrayLike<A>} arr1 The first array to compare.\n * @param {IArrayLike<B>} arr2 The second array to compare.\n * @param {?function(A,B):boolean=} opt_equalsFn Optional comparison function.\n *     Should take 2 arguments to compare, and return true if the arguments\n *     are equal. Defaults to {@link goog.array.defaultCompareEquality} which\n *     compares the elements using the built-in '===' operator.\n * @return {boolean} Whether the two arrays are equal.\n * @template A\n * @template B\n */\nfunction equals(arr1, arr2, opt_equalsFn) {\n  if (!goog.isArrayLike(arr1) || !goog.isArrayLike(arr2) ||\n      arr1.length != arr2.length) {\n    return false;\n  }\n  var l = arr1.length;\n  var equalsFn = opt_equalsFn || defaultCompareEquality;\n  for (var i = 0; i < l; i++) {\n    if (!equalsFn(arr1[i], arr2[i])) {\n      return false;\n    }\n  }\n  return true;\n}\nexports.equals = equals;\n\n\n/**\n * 3-way array compare function.\n * @param {!IArrayLike<VALUE>} arr1 The first array to\n *     compare.\n * @param {!IArrayLike<VALUE>} arr2 The second array to\n *     compare.\n * @param {function(VALUE, VALUE): number=} opt_compareFn Optional comparison\n *     function by which the array is to be ordered. Should take 2 arguments to\n *     compare, and return a negative number, zero, or a positive number\n *     depending on whether the first argument is less than, equal to, or\n *     greater than the second.\n * @return {number} Negative number, zero, or a positive number depending on\n *     whether the first argument is less than, equal to, or greater than the\n *     second.\n * @template VALUE\n */\nfunction compare3(arr1, arr2, opt_compareFn) {\n  var compare = opt_compareFn || defaultCompare;\n  var l = Math.min(arr1.length, arr2.length);\n  for (var i = 0; i < l; i++) {\n    var result = compare(arr1[i], arr2[i]);\n    if (result != 0) {\n      return result;\n    }\n  }\n  return defaultCompare(arr1.length, arr2.length);\n}\nexports.compare3 = compare3;\n\n\n/**\n * Compares its two arguments for order, using the built in < and >\n * operators.\n * @param {VALUE} a The first object to be compared.\n * @param {VALUE} b The second object to be compared.\n * @return {number} A negative number, zero, or a positive number as the first\n *     argument is less than, equal to, or greater than the second,\n *     respectively.\n * @template VALUE\n */\nfunction defaultCompare(a, b) {\n  return a > b ? 1 : a < b ? -1 : 0;\n}\nexports.defaultCompare = defaultCompare;\n\n\n/**\n * Compares its two arguments for inverse order, using the built in < and >\n * operators.\n * @param {VALUE} a The first object to be compared.\n * @param {VALUE} b The second object to be compared.\n * @return {number} A negative number, zero, or a positive number as the first\n *     argument is greater than, equal to, or less than the second,\n *     respectively.\n * @template VALUE\n */\nfunction inverseDefaultCompare(a, b) {\n  return -defaultCompare(a, b);\n}\nexports.inverseDefaultCompare = inverseDefaultCompare;\n\n\n/**\n * Compares its two arguments for equality, using the built in === operator.\n * @param {*} a The first object to compare.\n * @param {*} b The second object to compare.\n * @return {boolean} True if the two arguments are equal, false otherwise.\n */\nfunction defaultCompareEquality(a, b) {\n  return a === b;\n}\nexports.defaultCompareEquality = defaultCompareEquality;\n\n\n/**\n * Inserts a value into a sorted array. The array is not modified if the\n * value is already present.\n * @param {IArrayLike<VALUE>} array The array to modify.\n * @param {VALUE} value The object to insert.\n * @param {function(VALUE, VALUE): number=} opt_compareFn Optional comparison\n *     function by which the array is ordered. Should take 2 arguments to\n *     compare, and return a negative number, zero, or a positive number\n *     depending on whether the first argument is less than, equal to, or\n *     greater than the second.\n * @return {boolean} True if an element was inserted.\n * @template VALUE\n */\nfunction binaryInsert(array, value, opt_compareFn) {\n  var index = binarySearch(array, value, opt_compareFn);\n  if (index < 0) {\n    insertAt(array, value, -(index + 1));\n    return true;\n  }\n  return false;\n}\nexports.binaryInsert = binaryInsert;\n\n\n/**\n * Removes a value from a sorted array.\n * @param {!IArrayLike<VALUE>} array The array to modify.\n * @param {VALUE} value The object to remove.\n * @param {function(VALUE, VALUE): number=} opt_compareFn Optional comparison\n *     function by which the array is ordered. Should take 2 arguments to\n *     compare, and return a negative number, zero, or a positive number\n *     depending on whether the first argument is less than, equal to, or\n *     greater than the second.\n * @return {boolean} True if an element was removed.\n * @template VALUE\n */\nfunction binaryRemove(array, value, opt_compareFn) {\n  var index = binarySearch(array, value, opt_compareFn);\n  return (index >= 0) ? removeAt(array, index) : false;\n}\nexports.binaryRemove = binaryRemove;\n\n\n/**\n * Splits an array into disjoint buckets according to a splitting function.\n * @param {IArrayLike<T>} array The array.\n * @param {function(this:S, T, number, !IArrayLike<T>):?} sorter Function to\n *     call for every element.  This takes 3 arguments (the element, the index\n *     and the array) and must return a valid object key (a string, number,\n *     etc), or undefined, if that object should not be placed in a bucket.\n * @param {S=} opt_obj The object to be used as the value of 'this' within\n *     sorter.\n * @return {!Object<!Array<T>>} An object, with keys being all of the unique\n *     return values of sorter, and values being arrays containing the items for\n *     which the splitter returned that key.\n * @template T,S\n */\nfunction bucket(array, sorter, opt_obj) {\n  var buckets = {};\n\n  for (var i = 0; i < array.length; i++) {\n    var value = array[i];\n    var key = sorter.call(/** @type {?} */ (opt_obj), value, i, array);\n    if (key !== undefined) {\n      // Push the value to the right bucket, creating it if necessary.\n      var bucket = buckets[key] || (buckets[key] = []);\n      bucket.push(value);\n    }\n  }\n\n  return buckets;\n}\nexports.bucket = bucket;\n\n\n/**\n * Creates a new object built from the provided array and the key-generation\n * function.\n * @param {IArrayLike<T>} arr Array or array like object over\n *     which to iterate whose elements will be the values in the new object.\n * @param {?function(this:S, T, number, ?) : string} keyFunc The function to\n *     call for every element. This function takes 3 arguments (the element, the\n *     index and the array) and should return a string that will be used as the\n *     key for the element in the new object. If the function returns the same\n *     key for more than one element, the value for that key is\n *     implementation-defined.\n * @param {S=} opt_obj The object to be used as the value of 'this'\n *     within keyFunc.\n * @return {!Object<T>} The new object.\n * @template T,S\n */\nfunction toObject(arr, keyFunc, opt_obj) {\n  var ret = {};\n  forEach(arr, function(element, index) {\n    ret[keyFunc.call(/** @type {?} */ (opt_obj), element, index, arr)] =\n        element;\n  });\n  return ret;\n}\nexports.toObject = toObject;\n\n\n/**\n * Creates a range of numbers in an arithmetic progression.\n *\n * Range takes 1, 2, or 3 arguments:\n * <pre>\n * range(5) is the same as range(0, 5, 1) and produces [0, 1, 2, 3, 4]\n * range(2, 5) is the same as range(2, 5, 1) and produces [2, 3, 4]\n * range(-2, -5, -1) produces [-2, -3, -4]\n * range(-2, -5, 1) produces [], since stepping by 1 wouldn't ever reach -5.\n * </pre>\n *\n * @param {number} startOrEnd The starting value of the range if an end argument\n *     is provided. Otherwise, the start value is 0, and this is the end value.\n * @param {number=} opt_end The optional end value of the range.\n * @param {number=} opt_step The step size between range values. Defaults to 1\n *     if opt_step is undefined or 0.\n * @return {!Array<number>} An array of numbers for the requested range. May be\n *     an empty array if adding the step would not converge toward the end\n *     value.\n */\nfunction range(startOrEnd, opt_end, opt_step) {\n  var array = [];\n  var start = 0;\n  var end = startOrEnd;\n  var step = opt_step || 1;\n  if (opt_end !== undefined) {\n    start = startOrEnd;\n    end = opt_end;\n  }\n\n  if (step * (end - start) < 0) {\n    // Sign mismatch: start + step will never reach the end value.\n    return [];\n  }\n\n  if (step > 0) {\n    for (var i = start; i < end; i += step) {\n      array.push(i);\n    }\n  } else {\n    for (var i = start; i > end; i += step) {\n      array.push(i);\n    }\n  }\n  return array;\n}\nexports.range = range;\n\n\n/**\n * Returns an array consisting of the given value repeated N times.\n *\n * @param {VALUE} value The value to repeat.\n * @param {number} n The repeat count.\n * @return {!Array<VALUE>} An array with the repeated value.\n * @template VALUE\n */\nfunction repeat(value, n) {\n  var array = [];\n  for (var i = 0; i < n; i++) {\n    array[i] = value;\n  }\n  return array;\n}\nexports.repeat = repeat;\n\n\n/**\n * Returns an array consisting of every argument with all arrays\n * expanded in-place recursively.\n *\n * @param {...*} var_args The values to flatten.\n * @return {!Array<?>} An array containing the flattened values.\n */\nfunction flatten(var_args) {\n  var CHUNK_SIZE = 8192;\n\n  var result = [];\n  for (var i = 0; i < arguments.length; i++) {\n    var element = arguments[i];\n    if (Array.isArray(element)) {\n      for (var c = 0; c < element.length; c += CHUNK_SIZE) {\n        var chunk = slice(element, c, c + CHUNK_SIZE);\n        var recurseResult = flatten.apply(null, chunk);\n        for (var r = 0; r < recurseResult.length; r++) {\n          result.push(recurseResult[r]);\n        }\n      }\n    } else {\n      result.push(element);\n    }\n  }\n  return result;\n}\nexports.flatten = flatten;\n\n\n/**\n * Rotates an array in-place. After calling this method, the element at\n * index i will be the element previously at index (i - n) %\n * array.length, for all values of i between 0 and array.length - 1,\n * inclusive.\n *\n * For example, suppose list comprises [t, a, n, k, s]. After invoking\n * rotate(array, 1) (or rotate(array, -4)), array will comprise [s, t, a, n, k].\n *\n * @param {!Array<T>} array The array to rotate.\n * @param {number} n The amount to rotate.\n * @return {!Array<T>} The array.\n * @template T\n */\nfunction rotate(array, n) {\n  asserts.assert(array.length != null);\n\n  if (array.length) {\n    n %= array.length;\n    if (n > 0) {\n      Array.prototype.unshift.apply(array, array.splice(-n, n));\n    } else if (n < 0) {\n      Array.prototype.push.apply(array, array.splice(0, -n));\n    }\n  }\n  return array;\n}\nexports.rotate = rotate;\n\n\n/**\n * Moves one item of an array to a new position keeping the order of the rest\n * of the items. Example use case: keeping a list of JavaScript objects\n * synchronized with the corresponding list of DOM elements after one of the\n * elements has been dragged to a new position.\n * @param {!IArrayLike<?>} arr The array to modify.\n * @param {number} fromIndex Index of the item to move between 0 and\n *     `arr.length - 1`.\n * @param {number} toIndex Target index between 0 and `arr.length - 1`.\n */\nfunction moveItem(arr, fromIndex, toIndex) {\n  asserts.assert(fromIndex >= 0 && fromIndex < arr.length);\n  asserts.assert(toIndex >= 0 && toIndex < arr.length);\n  // Remove 1 item at fromIndex.\n  var removedItems = Array.prototype.splice.call(arr, fromIndex, 1);\n  // Insert the removed item at toIndex.\n  Array.prototype.splice.call(arr, toIndex, 0, removedItems[0]);\n  // We don't use goog.array.insertAt and goog.array.removeAt, because they're\n  // significantly slower than splice.\n}\nexports.moveItem = moveItem;\n\n\n/**\n * Creates a new array for which the element at position i is an array of the\n * ith element of the provided arrays.  The returned array will only be as long\n * as the shortest array provided; additional values are ignored.  For example,\n * the result of zipping [1, 2] and [3, 4, 5] is [[1,3], [2, 4]].\n *\n * This is similar to the zip() function in Python.  See {@link\n * http://docs.python.org/library/functions.html#zip}\n *\n * @param {...!IArrayLike<?>} var_args Arrays to be combined.\n * @return {!Array<!Array<?>>} A new array of arrays created from\n *     provided arrays.\n */\nfunction zip(var_args) {\n  if (!arguments.length) {\n    return [];\n  }\n  var result = [];\n  var minLen = arguments[0].length;\n  for (var i = 1; i < arguments.length; i++) {\n    if (arguments[i].length < minLen) {\n      minLen = arguments[i].length;\n    }\n  }\n  for (var i = 0; i < minLen; i++) {\n    var value = [];\n    for (var j = 0; j < arguments.length; j++) {\n      value.push(arguments[j][i]);\n    }\n    result.push(value);\n  }\n  return result;\n}\nexports.zip = zip;\n\n\n/**\n * Shuffles the values in the specified array using the Fisher-Yates in-place\n * shuffle (also known as the Knuth Shuffle). By default, calls Math.random()\n * and so resets the state of that random number generator. Similarly, may reset\n * the state of any other specified random number generator.\n *\n * Runtime: O(n)\n *\n * @param {!Array<?>} arr The array to be shuffled.\n * @param {function():number=} opt_randFn Optional random function to use for\n *     shuffling.\n *     Takes no arguments, and returns a random number on the interval [0, 1).\n *     Defaults to Math.random() using JavaScript's built-in Math library.\n */\nfunction shuffle(arr, opt_randFn) {\n  var randFn = opt_randFn || Math.random;\n\n  for (var i = arr.length - 1; i > 0; i--) {\n    // Choose a random array index in [0, i] (inclusive with i).\n    var j = Math.floor(randFn() * (i + 1));\n\n    var tmp = arr[i];\n    arr[i] = arr[j];\n    arr[j] = tmp;\n  }\n}\nexports.shuffle = shuffle;\n\n\n/**\n * Returns a new array of elements from arr, based on the indexes of elements\n * provided by index_arr. For example, the result of index copying\n * ['a', 'b', 'c'] with index_arr [1,0,0,2] is ['b', 'a', 'a', 'c'].\n *\n * @param {!IArrayLike<T>} arr The array to get a indexed copy from.\n * @param {!IArrayLike<number>} index_arr An array of indexes to get from arr.\n * @return {!Array<T>} A new array of elements from arr in index_arr order.\n * @template T\n */\nfunction copyByIndex(arr, index_arr) {\n  var result = [];\n  forEach(index_arr, function(index) {\n    result.push(arr[index]);\n  });\n  return result;\n}\nexports.copyByIndex = copyByIndex;\n\n\n/**\n * Maps each element of the input array into zero or more elements of the output\n * array.\n *\n * @param {!IArrayLike<VALUE>|string} arr Array or array like object\n *     over which to iterate.\n * @param {function(this:THIS, VALUE, number, ?): !Array<RESULT>} f The function\n *     to call for every element. This function takes 3 arguments (the element,\n *     the index and the array) and should return an array. The result will be\n *     used to extend a new array.\n * @param {THIS=} opt_obj The object to be used as the value of 'this' within f.\n * @return {!Array<RESULT>} a new array with the concatenation of all arrays\n *     returned from f.\n * @template THIS, VALUE, RESULT\n */\nfunction concatMap(arr, f, opt_obj) {\n  return concat.apply([], map(arr, f, opt_obj));\n}\nexports.concatMap = concatMap;\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview String functions called from Closure packages that couldn't\n * depend on each other. Outside Closure, use goog.string function which\n * delegate to these.\n */\n\n\ngoog.provide('goog.string.internal');\n\n\n/**\n * Fast prefix-checker.\n * @param {string} str The string to check.\n * @param {string} prefix A string to look for at the start of `str`.\n * @return {boolean} True if `str` begins with `prefix`.\n * @see goog.string.startsWith\n */\ngoog.string.internal.startsWith = function(str, prefix) {\n  'use strict';\n  return str.lastIndexOf(prefix, 0) == 0;\n};\n\n\n/**\n * Fast suffix-checker.\n * @param {string} str The string to check.\n * @param {string} suffix A string to look for at the end of `str`.\n * @return {boolean} True if `str` ends with `suffix`.\n * @see goog.string.endsWith\n */\ngoog.string.internal.endsWith = function(str, suffix) {\n  'use strict';\n  const l = str.length - suffix.length;\n  return l >= 0 && str.indexOf(suffix, l) == l;\n};\n\n\n/**\n * Case-insensitive prefix-checker.\n * @param {string} str The string to check.\n * @param {string} prefix  A string to look for at the end of `str`.\n * @return {boolean} True if `str` begins with `prefix` (ignoring\n *     case).\n * @see goog.string.caseInsensitiveStartsWith\n */\ngoog.string.internal.caseInsensitiveStartsWith = function(str, prefix) {\n  'use strict';\n  return goog.string.internal.caseInsensitiveCompare(\n             prefix, str.substr(0, prefix.length)) == 0;\n};\n\n\n/**\n * Case-insensitive suffix-checker.\n * @param {string} str The string to check.\n * @param {string} suffix A string to look for at the end of `str`.\n * @return {boolean} True if `str` ends with `suffix` (ignoring\n *     case).\n * @see goog.string.caseInsensitiveEndsWith\n */\ngoog.string.internal.caseInsensitiveEndsWith = function(str, suffix) {\n  'use strict';\n  return (\n      goog.string.internal.caseInsensitiveCompare(\n          suffix, str.substr(str.length - suffix.length, suffix.length)) == 0);\n};\n\n\n/**\n * Case-insensitive equality checker.\n * @param {string} str1 First string to check.\n * @param {string} str2 Second string to check.\n * @return {boolean} True if `str1` and `str2` are the same string,\n *     ignoring case.\n * @see goog.string.caseInsensitiveEquals\n */\ngoog.string.internal.caseInsensitiveEquals = function(str1, str2) {\n  'use strict';\n  return str1.toLowerCase() == str2.toLowerCase();\n};\n\n\n/**\n * Checks if a string is empty or contains only whitespaces.\n * @param {string} str The string to check.\n * @return {boolean} Whether `str` is empty or whitespace only.\n * @see goog.string.isEmptyOrWhitespace\n */\ngoog.string.internal.isEmptyOrWhitespace = function(str) {\n  'use strict';\n  // testing length == 0 first is actually slower in all browsers (about the\n  // same in Opera).\n  // Since IE doesn't include non-breaking-space (0xa0) in their \\s character\n  // class (as required by section 7.2 of the ECMAScript spec), we explicitly\n  // include it in the regexp to enforce consistent cross-browser behavior.\n  return /^[\\s\\xa0]*$/.test(str);\n};\n\n\n/**\n * Trims white spaces to the left and right of a string.\n * @param {string} str The string to trim.\n * @return {string} A trimmed copy of `str`.\n */\ngoog.string.internal.trim =\n    (goog.TRUSTED_SITE && String.prototype.trim) ? function(str) {\n      'use strict';\n      return str.trim();\n    } : function(str) {\n      'use strict';\n      // Since IE doesn't include non-breaking-space (0xa0) in their \\s\n      // character class (as required by section 7.2 of the ECMAScript spec),\n      // we explicitly include it in the regexp to enforce consistent\n      // cross-browser behavior.\n      // NOTE: We don't use String#replace because it might have side effects\n      // causing this function to not compile to 0 bytes.\n      return /^[\\s\\xa0]*([\\s\\S]*?)[\\s\\xa0]*$/.exec(str)[1];\n    };\n\n\n/**\n * A string comparator that ignores case.\n * -1 = str1 less than str2\n *  0 = str1 equals str2\n *  1 = str1 greater than str2\n *\n * @param {string} str1 The string to compare.\n * @param {string} str2 The string to compare `str1` to.\n * @return {number} The comparator result, as described above.\n * @see goog.string.caseInsensitiveCompare\n */\ngoog.string.internal.caseInsensitiveCompare = function(str1, str2) {\n  'use strict';\n  const test1 = String(str1).toLowerCase();\n  const test2 = String(str2).toLowerCase();\n\n  if (test1 < test2) {\n    return -1;\n  } else if (test1 == test2) {\n    return 0;\n  } else {\n    return 1;\n  }\n};\n\n\n/**\n * Converts \\n to <br>s or <br />s.\n * @param {string} str The string in which to convert newlines.\n * @param {boolean=} opt_xml Whether to use XML compatible tags.\n * @return {string} A copy of `str` with converted newlines.\n * @see goog.string.newLineToBr\n */\ngoog.string.internal.newLineToBr = function(str, opt_xml) {\n  'use strict';\n  return str.replace(/(\\r\\n|\\r|\\n)/g, opt_xml ? '<br />' : '<br>');\n};\n\n\n/**\n * Escapes double quote '\"' and single quote '\\'' characters in addition to\n * '&', '<', and '>' so that a string can be included in an HTML tag attribute\n * value within double or single quotes.\n * @param {string} str string to be escaped.\n * @param {boolean=} opt_isLikelyToContainHtmlChars\n * @return {string} An escaped copy of `str`.\n * @see goog.string.htmlEscape\n */\ngoog.string.internal.htmlEscape = function(\n    str, opt_isLikelyToContainHtmlChars) {\n  'use strict';\n  if (opt_isLikelyToContainHtmlChars) {\n    str = str.replace(goog.string.internal.AMP_RE_, '&amp;')\n              .replace(goog.string.internal.LT_RE_, '&lt;')\n              .replace(goog.string.internal.GT_RE_, '&gt;')\n              .replace(goog.string.internal.QUOT_RE_, '&quot;')\n              .replace(goog.string.internal.SINGLE_QUOTE_RE_, '&#39;')\n              .replace(goog.string.internal.NULL_RE_, '&#0;');\n    return str;\n\n  } else {\n    // quick test helps in the case when there are no chars to replace, in\n    // worst case this makes barely a difference to the time taken\n    if (!goog.string.internal.ALL_RE_.test(str)) return str;\n\n    // str.indexOf is faster than regex.test in this case\n    if (str.indexOf('&') != -1) {\n      str = str.replace(goog.string.internal.AMP_RE_, '&amp;');\n    }\n    if (str.indexOf('<') != -1) {\n      str = str.replace(goog.string.internal.LT_RE_, '&lt;');\n    }\n    if (str.indexOf('>') != -1) {\n      str = str.replace(goog.string.internal.GT_RE_, '&gt;');\n    }\n    if (str.indexOf('\"') != -1) {\n      str = str.replace(goog.string.internal.QUOT_RE_, '&quot;');\n    }\n    if (str.indexOf('\\'') != -1) {\n      str = str.replace(goog.string.internal.SINGLE_QUOTE_RE_, '&#39;');\n    }\n    if (str.indexOf('\\x00') != -1) {\n      str = str.replace(goog.string.internal.NULL_RE_, '&#0;');\n    }\n    return str;\n  }\n};\n\n\n/**\n * Regular expression that matches an ampersand, for use in escaping.\n * @const {!RegExp}\n * @private\n */\ngoog.string.internal.AMP_RE_ = /&/g;\n\n\n/**\n * Regular expression that matches a less than sign, for use in escaping.\n * @const {!RegExp}\n * @private\n */\ngoog.string.internal.LT_RE_ = /</g;\n\n\n/**\n * Regular expression that matches a greater than sign, for use in escaping.\n * @const {!RegExp}\n * @private\n */\ngoog.string.internal.GT_RE_ = />/g;\n\n\n/**\n * Regular expression that matches a double quote, for use in escaping.\n * @const {!RegExp}\n * @private\n */\ngoog.string.internal.QUOT_RE_ = /\"/g;\n\n\n/**\n * Regular expression that matches a single quote, for use in escaping.\n * @const {!RegExp}\n * @private\n */\ngoog.string.internal.SINGLE_QUOTE_RE_ = /'/g;\n\n\n/**\n * Regular expression that matches null character, for use in escaping.\n * @const {!RegExp}\n * @private\n */\ngoog.string.internal.NULL_RE_ = /\\x00/g;\n\n\n/**\n * Regular expression that matches any character that needs to be escaped.\n * @const {!RegExp}\n * @private\n */\ngoog.string.internal.ALL_RE_ = /[\\x00&<>\"']/;\n\n\n/**\n * Do escaping of whitespace to preserve spatial formatting. We use character\n * entity #160 to make it safer for xml.\n * @param {string} str The string in which to escape whitespace.\n * @param {boolean=} opt_xml Whether to use XML compatible tags.\n * @return {string} An escaped copy of `str`.\n * @see goog.string.whitespaceEscape\n */\ngoog.string.internal.whitespaceEscape = function(str, opt_xml) {\n  'use strict';\n  // This doesn't use goog.string.preserveSpaces for backwards compatibility.\n  return goog.string.internal.newLineToBr(\n      str.replace(/  /g, ' &#160;'), opt_xml);\n};\n\n\n/**\n * Determines whether a string contains a substring.\n * @param {string} str The string to search.\n * @param {string} subString The substring to search for.\n * @return {boolean} Whether `str` contains `subString`.\n * @see goog.string.contains\n */\ngoog.string.internal.contains = function(str, subString) {\n  'use strict';\n  return str.indexOf(subString) != -1;\n};\n\n\n/**\n * Determines whether a string contains a substring, ignoring case.\n * @param {string} str The string to search.\n * @param {string} subString The substring to search for.\n * @return {boolean} Whether `str` contains `subString`.\n * @see goog.string.caseInsensitiveContains\n */\ngoog.string.internal.caseInsensitiveContains = function(str, subString) {\n  'use strict';\n  return goog.string.internal.contains(\n      str.toLowerCase(), subString.toLowerCase());\n};\n\n\n/**\n * Compares two version numbers.\n *\n * @param {string|number} version1 Version of first item.\n * @param {string|number} version2 Version of second item.\n *\n * @return {number}  1 if `version1` is higher.\n *                   0 if arguments are equal.\n *                  -1 if `version2` is higher.\n * @see goog.string.compareVersions\n */\ngoog.string.internal.compareVersions = function(version1, version2) {\n  'use strict';\n  let order = 0;\n  // Trim leading and trailing whitespace and split the versions into\n  // subversions.\n  const v1Subs = goog.string.internal.trim(String(version1)).split('.');\n  const v2Subs = goog.string.internal.trim(String(version2)).split('.');\n  const subCount = Math.max(v1Subs.length, v2Subs.length);\n\n  // Iterate over the subversions, as long as they appear to be equivalent.\n  for (let subIdx = 0; order == 0 && subIdx < subCount; subIdx++) {\n    let v1Sub = v1Subs[subIdx] || '';\n    let v2Sub = v2Subs[subIdx] || '';\n\n    do {\n      // Split the subversions into pairs of numbers and qualifiers (like 'b').\n      // Two different RegExp objects are use to make it clear the code\n      // is side-effect free\n      const v1Comp = /(\\d*)(\\D*)(.*)/.exec(v1Sub) || ['', '', '', ''];\n      const v2Comp = /(\\d*)(\\D*)(.*)/.exec(v2Sub) || ['', '', '', ''];\n      // Break if there are no more matches.\n      if (v1Comp[0].length == 0 && v2Comp[0].length == 0) {\n        break;\n      }\n\n      // Parse the numeric part of the subversion. A missing number is\n      // equivalent to 0.\n      const v1CompNum = v1Comp[1].length == 0 ? 0 : parseInt(v1Comp[1], 10);\n      const v2CompNum = v2Comp[1].length == 0 ? 0 : parseInt(v2Comp[1], 10);\n\n      // Compare the subversion components. The number has the highest\n      // precedence. Next, if the numbers are equal, a subversion without any\n      // qualifier is always higher than a subversion with any qualifier. Next,\n      // the qualifiers are compared as strings.\n      order = goog.string.internal.compareElements_(v1CompNum, v2CompNum) ||\n          goog.string.internal.compareElements_(\n              v1Comp[2].length == 0, v2Comp[2].length == 0) ||\n          goog.string.internal.compareElements_(v1Comp[2], v2Comp[2]);\n      // Stop as soon as an inequality is discovered.\n\n      v1Sub = v1Comp[3];\n      v2Sub = v2Comp[3];\n    } while (order == 0);\n  }\n\n  return order;\n};\n\n\n/**\n * Compares elements of a version number.\n *\n * @param {string|number|boolean} left An element from a version number.\n * @param {string|number|boolean} right An element from a version number.\n *\n * @return {number}  1 if `left` is higher.\n *                   0 if arguments are equal.\n *                  -1 if `right` is higher.\n * @private\n */\ngoog.string.internal.compareElements_ = function(left, right) {\n  'use strict';\n  if (left < right) {\n    return -1;\n  } else if (left > right) {\n    return 1;\n  }\n  return 0;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Utilities used by goog.labs.userAgent tools. These functions\n * should not be used outside of goog.labs.userAgent.*.\n *\n */\n\ngoog.provide('goog.labs.userAgent.util');\n\ngoog.require('goog.string.internal');\n\n\n/**\n * Gets the native userAgent string from navigator if it exists.\n * If navigator or navigator.userAgent string is missing, returns an empty\n * string.\n * @return {string}\n * @private\n */\ngoog.labs.userAgent.util.getNativeUserAgentString_ = function() {\n  'use strict';\n  var navigator = goog.labs.userAgent.util.getNavigator_();\n  if (navigator) {\n    var userAgent = navigator.userAgent;\n    if (userAgent) {\n      return userAgent;\n    }\n  }\n  return '';\n};\n\n\n/**\n * Getter for the native navigator.\n * This is a separate function so it can be stubbed out in testing.\n * @return {!Navigator}\n * @private\n */\ngoog.labs.userAgent.util.getNavigator_ = function() {\n  'use strict';\n  return goog.global.navigator;\n};\n\n\n/**\n * A possible override for applications which wish to not check\n * navigator.userAgent but use a specified value for detection instead.\n * @private {string}\n */\ngoog.labs.userAgent.util.userAgent_ =\n    goog.labs.userAgent.util.getNativeUserAgentString_();\n\n\n/**\n * Applications may override browser detection on the built in\n * navigator.userAgent object by setting this string. Set to null to use the\n * browser object instead.\n * @param {?string=} opt_userAgent The User-Agent override.\n */\ngoog.labs.userAgent.util.setUserAgent = function(opt_userAgent) {\n  'use strict';\n  goog.labs.userAgent.util.userAgent_ =\n      opt_userAgent || goog.labs.userAgent.util.getNativeUserAgentString_();\n};\n\n\n/**\n * @return {string} The user agent string.\n */\ngoog.labs.userAgent.util.getUserAgent = function() {\n  'use strict';\n  return goog.labs.userAgent.util.userAgent_;\n};\n\n\n/**\n * @param {string} str\n * @return {boolean} Whether the user agent contains the given string.\n */\ngoog.labs.userAgent.util.matchUserAgent = function(str) {\n  'use strict';\n  var userAgent = goog.labs.userAgent.util.getUserAgent();\n  return goog.string.internal.contains(userAgent, str);\n};\n\n\n/**\n * @param {string} str\n * @return {boolean} Whether the user agent contains the given string, ignoring\n *     case.\n */\ngoog.labs.userAgent.util.matchUserAgentIgnoreCase = function(str) {\n  'use strict';\n  var userAgent = goog.labs.userAgent.util.getUserAgent();\n  return goog.string.internal.caseInsensitiveContains(userAgent, str);\n};\n\n\n/**\n * Parses the user agent into tuples for each section.\n * @param {string} userAgent\n * @return {!Array<!Array<string>>} Tuples of key, version, and the contents\n *     of the parenthetical.\n */\ngoog.labs.userAgent.util.extractVersionTuples = function(userAgent) {\n  'use strict';\n  // Matches each section of a user agent string.\n  // Example UA:\n  // Mozilla/5.0 (iPad; U; CPU OS 3_2_1 like Mac OS X; en-us)\n  // AppleWebKit/531.21.10 (KHTML, like Gecko) Mobile/7B405\n  // This has three version tuples: Mozilla, AppleWebKit, and Mobile.\n\n  var versionRegExp = new RegExp(\n      // Key. Note that a key may have a space.\n      // (i.e. 'Mobile Safari' in 'Mobile Safari/5.0')\n      '(\\\\w[\\\\w ]+)' +\n\n          '/' +                // slash\n          '([^\\\\s]+)' +        // version (i.e. '5.0b')\n          '\\\\s*' +             // whitespace\n          '(?:\\\\((.*?)\\\\))?',  // parenthetical info. parentheses not matched.\n      'g');\n\n  var data = [];\n  var match;\n\n  // Iterate and collect the version tuples.  Each iteration will be the\n  // next regex match.\n  while (match = versionRegExp.exec(userAgent)) {\n    data.push([\n      match[1],  // key\n      match[2],  // value\n      // || undefined as this is not undefined in IE7 and IE8\n      match[3] || undefined  // info\n    ]);\n  }\n\n  return data;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Utilities for manipulating objects/maps/hashes.\n */\n\ngoog.provide('goog.object');\n\n\n/**\n * Calls a function for each element in an object/map/hash.\n *\n * @param {Object<K,V>} obj The object over which to iterate.\n * @param {function(this:T,V,?,Object<K,V>):?} f The function to call\n *     for every element. This function takes 3 arguments (the value, the\n *     key and the object) and the return value is ignored.\n * @param {T=} opt_obj This is used as the 'this' object within f.\n * @template T,K,V\n */\ngoog.object.forEach = function(obj, f, opt_obj) {\n  for (const key in obj) {\n    f.call(/** @type {?} */ (opt_obj), obj[key], key, obj);\n  }\n};\n\n\n/**\n * Calls a function for each element in an object/map/hash. If that call returns\n * true, adds the element to a new object.\n *\n * @param {Object<K,V>} obj The object over which to iterate.\n * @param {function(this:T,V,?,Object<K,V>):boolean} f The function to call\n *     for every element. This\n *     function takes 3 arguments (the value, the key and the object)\n *     and should return a boolean. If the return value is true the\n *     element is added to the result object. If it is false the\n *     element is not included.\n * @param {T=} opt_obj This is used as the 'this' object within f.\n * @return {!Object<K,V>} a new object in which only elements that passed the\n *     test are present.\n * @template T,K,V\n */\ngoog.object.filter = function(obj, f, opt_obj) {\n  const res = {};\n  for (const key in obj) {\n    if (f.call(/** @type {?} */ (opt_obj), obj[key], key, obj)) {\n      res[key] = obj[key];\n    }\n  }\n  return res;\n};\n\n\n/**\n * For every element in an object/map/hash calls a function and inserts the\n * result into a new object.\n *\n * @param {Object<K,V>} obj The object over which to iterate.\n * @param {function(this:T,V,?,Object<K,V>):R} f The function to call\n *     for every element. This function\n *     takes 3 arguments (the value, the key and the object)\n *     and should return something. The result will be inserted\n *     into a new object.\n * @param {T=} opt_obj This is used as the 'this' object within f.\n * @return {!Object<K,R>} a new object with the results from f.\n * @template T,K,V,R\n */\ngoog.object.map = function(obj, f, opt_obj) {\n  const res = {};\n  for (const key in obj) {\n    res[key] = f.call(/** @type {?} */ (opt_obj), obj[key], key, obj);\n  }\n  return res;\n};\n\n\n/**\n * Calls a function for each element in an object/map/hash. If any\n * call returns true, returns true (without checking the rest). If\n * all calls return false, returns false.\n *\n * @param {Object<K,V>} obj The object to check.\n * @param {function(this:T,V,?,Object<K,V>):boolean} f The function to\n *     call for every element. This function\n *     takes 3 arguments (the value, the key and the object) and should\n *     return a boolean.\n * @param {T=} opt_obj This is used as the 'this' object within f.\n * @return {boolean} true if any element passes the test.\n * @template T,K,V\n */\ngoog.object.some = function(obj, f, opt_obj) {\n  for (const key in obj) {\n    if (f.call(/** @type {?} */ (opt_obj), obj[key], key, obj)) {\n      return true;\n    }\n  }\n  return false;\n};\n\n\n/**\n * Calls a function for each element in an object/map/hash. If\n * all calls return true, returns true. If any call returns false, returns\n * false at this point and does not continue to check the remaining elements.\n *\n * @param {Object<K,V>} obj The object to check.\n * @param {?function(this:T,V,?,Object<K,V>):boolean} f The function to\n *     call for every element. This function\n *     takes 3 arguments (the value, the key and the object) and should\n *     return a boolean.\n * @param {T=} opt_obj This is used as the 'this' object within f.\n * @return {boolean} false if any element fails the test.\n * @template T,K,V\n */\ngoog.object.every = function(obj, f, opt_obj) {\n  for (const key in obj) {\n    if (!f.call(/** @type {?} */ (opt_obj), obj[key], key, obj)) {\n      return false;\n    }\n  }\n  return true;\n};\n\n\n/**\n * Returns the number of key-value pairs in the object map.\n *\n * @param {Object} obj The object for which to get the number of key-value\n *     pairs.\n * @return {number} The number of key-value pairs in the object map.\n */\ngoog.object.getCount = function(obj) {\n  let rv = 0;\n  for (const key in obj) {\n    rv++;\n  }\n  return rv;\n};\n\n\n/**\n * Returns one key from the object map, if any exists.\n * For map literals the returned key will be the first one in most of the\n * browsers (a know exception is Konqueror).\n *\n * @param {Object} obj The object to pick a key from.\n * @return {string|undefined} The key or undefined if the object is empty.\n */\ngoog.object.getAnyKey = function(obj) {\n  for (const key in obj) {\n    return key;\n  }\n};\n\n\n/**\n * Returns one value from the object map, if any exists.\n * For map literals the returned value will be the first one in most of the\n * browsers (a know exception is Konqueror).\n *\n * @param {Object<K,V>} obj The object to pick a value from.\n * @return {V|undefined} The value or undefined if the object is empty.\n * @template K,V\n */\ngoog.object.getAnyValue = function(obj) {\n  for (const key in obj) {\n    return obj[key];\n  }\n};\n\n\n/**\n * Whether the object/hash/map contains the given object as a value.\n * An alias for goog.object.containsValue(obj, val).\n *\n * @param {Object<K,V>} obj The object in which to look for val.\n * @param {V} val The object for which to check.\n * @return {boolean} true if val is present.\n * @template K,V\n */\ngoog.object.contains = function(obj, val) {\n  return goog.object.containsValue(obj, val);\n};\n\n\n/**\n * Returns the values of the object/map/hash.\n *\n * @param {Object<K,V>} obj The object from which to get the values.\n * @return {!Array<V>} The values in the object/map/hash.\n * @template K,V\n */\ngoog.object.getValues = function(obj) {\n  const res = [];\n  let i = 0;\n  for (const key in obj) {\n    res[i++] = obj[key];\n  }\n  return res;\n};\n\n\n/**\n * Returns the keys of the object/map/hash.\n *\n * @param {Object} obj The object from which to get the keys.\n * @return {!Array<string>} Array of property keys.\n */\ngoog.object.getKeys = function(obj) {\n  const res = [];\n  let i = 0;\n  for (const key in obj) {\n    res[i++] = key;\n  }\n  return res;\n};\n\n\n/**\n * Get a value from an object multiple levels deep.  This is useful for\n * pulling values from deeply nested objects, such as JSON responses.\n * Example usage: getValueByKeys(jsonObj, 'foo', 'entries', 3)\n *\n * @param {!Object} obj An object to get the value from.  Can be array-like.\n * @param {...(string|number|!IArrayLike<number|string>)}\n *     var_args A number of keys\n *     (as strings, or numbers, for array-like objects).  Can also be\n *     specified as a single array of keys.\n * @return {*} The resulting value.  If, at any point, the value for a key\n *     in the current object is null or undefined, returns undefined.\n */\ngoog.object.getValueByKeys = function(obj, var_args) {\n  const isArrayLike = goog.isArrayLike(var_args);\n  const keys = isArrayLike ?\n      /** @type {!IArrayLike<number|string>} */ (var_args) :\n      arguments;\n\n  // Start with the 2nd parameter for the variable parameters syntax.\n  for (let i = isArrayLike ? 0 : 1; i < keys.length; i++) {\n    if (obj == null) return undefined;\n    obj = obj[keys[i]];\n  }\n\n  return obj;\n};\n\n\n/**\n * Whether the object/map/hash contains the given key.\n *\n * @param {Object} obj The object in which to look for key.\n * @param {?} key The key for which to check.\n * @return {boolean} true If the map contains the key.\n */\ngoog.object.containsKey = function(obj, key) {\n  return obj !== null && key in obj;\n};\n\n\n/**\n * Whether the object/map/hash contains the given value. This is O(n).\n *\n * @param {Object<K,V>} obj The object in which to look for val.\n * @param {V} val The value for which to check.\n * @return {boolean} true If the map contains the value.\n * @template K,V\n */\ngoog.object.containsValue = function(obj, val) {\n  for (const key in obj) {\n    if (obj[key] == val) {\n      return true;\n    }\n  }\n  return false;\n};\n\n\n/**\n * Searches an object for an element that satisfies the given condition and\n * returns its key.\n * @param {Object<K,V>} obj The object to search in.\n * @param {function(this:T,V,string,Object<K,V>):boolean} f The\n *      function to call for every element. Takes 3 arguments (the value,\n *     the key and the object) and should return a boolean.\n * @param {T=} opt_this An optional \"this\" context for the function.\n * @return {string|undefined} The key of an element for which the function\n *     returns true or undefined if no such element is found.\n * @template T,K,V\n */\ngoog.object.findKey = function(obj, f, opt_this) {\n  for (const key in obj) {\n    if (f.call(/** @type {?} */ (opt_this), obj[key], key, obj)) {\n      return key;\n    }\n  }\n  return undefined;\n};\n\n\n/**\n * Searches an object for an element that satisfies the given condition and\n * returns its value.\n * @param {Object<K,V>} obj The object to search in.\n * @param {function(this:T,V,string,Object<K,V>):boolean} f The function\n *     to call for every element. Takes 3 arguments (the value, the key\n *     and the object) and should return a boolean.\n * @param {T=} opt_this An optional \"this\" context for the function.\n * @return {V} The value of an element for which the function returns true or\n *     undefined if no such element is found.\n * @template T,K,V\n */\ngoog.object.findValue = function(obj, f, opt_this) {\n  const key = goog.object.findKey(obj, f, opt_this);\n  return key && obj[key];\n};\n\n\n/**\n * Whether the object/map/hash is empty.\n *\n * @param {Object} obj The object to test.\n * @return {boolean} true if obj is empty.\n */\ngoog.object.isEmpty = function(obj) {\n  for (const key in obj) {\n    return false;\n  }\n  return true;\n};\n\n\n/**\n * Removes all key value pairs from the object/map/hash.\n *\n * @param {Object} obj The object to clear.\n */\ngoog.object.clear = function(obj) {\n  for (const i in obj) {\n    delete obj[i];\n  }\n};\n\n\n/**\n * Removes a key-value pair based on the key.\n *\n * @param {Object} obj The object from which to remove the key.\n * @param {?} key The key to remove.\n * @return {boolean} Whether an element was removed.\n */\ngoog.object.remove = function(obj, key) {\n  let rv;\n  if (rv = key in /** @type {!Object} */ (obj)) {\n    delete obj[key];\n  }\n  return rv;\n};\n\n\n/**\n * Adds a key-value pair to the object. Throws an exception if the key is\n * already in use. Use set if you want to change an existing pair.\n *\n * @param {Object<K,V>} obj The object to which to add the key-value pair.\n * @param {string} key The key to add.\n * @param {V} val The value to add.\n * @template K,V\n */\ngoog.object.add = function(obj, key, val) {\n  if (obj !== null && key in obj) {\n    throw new Error('The object already contains the key \"' + key + '\"');\n  }\n  goog.object.set(obj, key, val);\n};\n\n\n/**\n * Returns the value for the given key.\n *\n * @param {Object<K,V>} obj The object from which to get the value.\n * @param {string} key The key for which to get the value.\n * @param {R=} opt_val The value to return if no item is found for the given\n *     key (default is undefined).\n * @return {V|R|undefined} The value for the given key.\n * @template K,V,R\n */\ngoog.object.get = function(obj, key, opt_val) {\n  if (obj !== null && key in obj) {\n    return obj[key];\n  }\n  return opt_val;\n};\n\n\n/**\n * Adds a key-value pair to the object/map/hash.\n *\n * @param {Object<K,V>} obj The object to which to add the key-value pair.\n * @param {string} key The key to add.\n * @param {V} value The value to add.\n * @template K,V\n */\ngoog.object.set = function(obj, key, value) {\n  obj[key] = value;\n};\n\n\n/**\n * Adds a key-value pair to the object/map/hash if it doesn't exist yet.\n *\n * @param {Object<K,V>} obj The object to which to add the key-value pair.\n * @param {string} key The key to add.\n * @param {V} value The value to add if the key wasn't present.\n * @return {V} The value of the entry at the end of the function.\n * @template K,V\n */\ngoog.object.setIfUndefined = function(obj, key, value) {\n  return key in /** @type {!Object} */ (obj) ? obj[key] : (obj[key] = value);\n};\n\n\n/**\n * Sets a key and value to an object if the key is not set. The value will be\n * the return value of the given function. If the key already exists, the\n * object will not be changed and the function will not be called (the function\n * will be lazily evaluated -- only called if necessary).\n *\n * This function is particularly useful when used with an `Object` which is\n * acting as a cache.\n *\n * @param {!Object<K,V>} obj The object to which to add the key-value pair.\n * @param {string} key The key to add.\n * @param {function():V} f The value to add if the key wasn't present.\n * @return {V} The value of the entry at the end of the function.\n * @template K,V\n */\ngoog.object.setWithReturnValueIfNotSet = function(obj, key, f) {\n  if (key in obj) {\n    return obj[key];\n  }\n\n  const val = f();\n  obj[key] = val;\n  return val;\n};\n\n\n/**\n * Compares two objects for equality using === on the values.\n *\n * @param {!Object<K,V>} a\n * @param {!Object<K,V>} b\n * @return {boolean}\n * @template K,V\n */\ngoog.object.equals = function(a, b) {\n  for (const k in a) {\n    if (!(k in b) || a[k] !== b[k]) {\n      return false;\n    }\n  }\n  for (const k in b) {\n    if (!(k in a)) {\n      return false;\n    }\n  }\n  return true;\n};\n\n\n/**\n * Returns a shallow clone of the object.\n *\n * @param {Object<K,V>} obj Object to clone.\n * @return {!Object<K,V>} Clone of the input object.\n * @template K,V\n */\ngoog.object.clone = function(obj) {\n  const res = {};\n  for (const key in obj) {\n    res[key] = obj[key];\n  }\n  return res;\n};\n\n\n/**\n * Clones a value. The input may be an Object, Array, or basic type. Objects and\n * arrays will be cloned recursively.\n *\n * WARNINGS:\n * <code>goog.object.unsafeClone</code> does not detect reference loops. Objects\n * that refer to themselves will cause infinite recursion.\n *\n * <code>goog.object.unsafeClone</code> is unaware of unique identifiers, and\n * copies UIDs created by <code>getUid</code> into cloned results.\n *\n * @param {T} obj The value to clone.\n * @return {T} A clone of the input value.\n * @template T\n */\ngoog.object.unsafeClone = function(obj) {\n  if (!obj || typeof obj !== 'object') return obj;\n  if (typeof obj.clone === 'function') return obj.clone();\n  const clone = Array.isArray(obj) ? [] :\n      typeof ArrayBuffer === 'function' &&\n          typeof ArrayBuffer.isView === 'function' && ArrayBuffer.isView(obj) &&\n          !(obj instanceof DataView) ?\n                                     new obj.constructor(obj.length) :\n                                     {};\n  for (const key in obj) {\n    clone[key] = goog.object.unsafeClone(obj[key]);\n  }\n  return clone;\n};\n\n\n/**\n * Returns a new object in which all the keys and values are interchanged\n * (keys become values and values become keys). If multiple keys map to the\n * same value, the chosen transposed value is implementation-dependent.\n *\n * @param {Object} obj The object to transpose.\n * @return {!Object} The transposed object.\n */\ngoog.object.transpose = function(obj) {\n  const transposed = {};\n  for (const key in obj) {\n    transposed[obj[key]] = key;\n  }\n  return transposed;\n};\n\n\n/**\n * The names of the fields that are defined on Object.prototype.\n * @type {Array<string>}\n * @private\n */\ngoog.object.PROTOTYPE_FIELDS_ = [\n  'constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable',\n  'toLocaleString', 'toString', 'valueOf'\n];\n\n\n/**\n * Extends an object with another object.\n * This operates 'in-place'; it does not create a new Object.\n *\n * Example:\n * var o = {};\n * goog.object.extend(o, {a: 0, b: 1});\n * o; // {a: 0, b: 1}\n * goog.object.extend(o, {b: 2, c: 3});\n * o; // {a: 0, b: 2, c: 3}\n *\n * @param {Object} target The object to modify. Existing properties will be\n *     overwritten if they are also present in one of the objects in\n *     `var_args`.\n * @param {...(Object|null|undefined)} var_args The objects from which values\n *     will be copied.\n * @deprecated Prefer Object.assign\n */\ngoog.object.extend = function(target, var_args) {\n  let key;\n  let source;\n  for (let i = 1; i < arguments.length; i++) {\n    source = arguments[i];\n    for (key in source) {\n      target[key] = source[key];\n    }\n\n    // For IE the for-in-loop does not contain any properties that are not\n    // enumerable on the prototype object (for example isPrototypeOf from\n    // Object.prototype) and it will also not include 'replace' on objects that\n    // extend String and change 'replace' (not that it is common for anyone to\n    // extend anything except Object).\n\n    for (let j = 0; j < goog.object.PROTOTYPE_FIELDS_.length; j++) {\n      key = goog.object.PROTOTYPE_FIELDS_[j];\n      if (Object.prototype.hasOwnProperty.call(source, key)) {\n        target[key] = source[key];\n      }\n    }\n  }\n};\n\n\n/**\n * Creates a new object built from the key-value pairs provided as arguments.\n * @param {...*} var_args If only one argument is provided and it is an array\n *     then this is used as the arguments, otherwise even arguments are used as\n *     the property names and odd arguments are used as the property values.\n * @return {!Object} The new object.\n * @throws {Error} If there are uneven number of arguments or there is only one\n *     non array argument.\n */\ngoog.object.create = function(var_args) {\n  const argLength = arguments.length;\n  if (argLength == 1 && Array.isArray(arguments[0])) {\n    return goog.object.create.apply(null, arguments[0]);\n  }\n\n  if (argLength % 2) {\n    throw new Error('Uneven number of arguments');\n  }\n\n  const rv = {};\n  for (let i = 0; i < argLength; i += 2) {\n    rv[arguments[i]] = arguments[i + 1];\n  }\n  return rv;\n};\n\n\n/**\n * Creates a new object where the property names come from the arguments but\n * the value is always set to true\n * @param {...*} var_args If only one argument is provided and it is an array\n *     then this is used as the arguments, otherwise the arguments are used\n *     as the property names.\n * @return {!Object} The new object.\n */\ngoog.object.createSet = function(var_args) {\n  const argLength = arguments.length;\n  if (argLength == 1 && Array.isArray(arguments[0])) {\n    return goog.object.createSet.apply(null, arguments[0]);\n  }\n\n  const rv = {};\n  for (let i = 0; i < argLength; i++) {\n    rv[arguments[i]] = true;\n  }\n  return rv;\n};\n\n\n/**\n * Creates an immutable view of the underlying object, if the browser\n * supports immutable objects.\n *\n * In default mode, writes to this view will fail silently. In strict mode,\n * they will throw an error.\n *\n * @param {!Object<K,V>} obj An object.\n * @return {!Object<K,V>} An immutable view of that object, or the\n *     original object if this browser does not support immutables.\n * @template K,V\n */\ngoog.object.createImmutableView = function(obj) {\n  let result = obj;\n  if (Object.isFrozen && !Object.isFrozen(obj)) {\n    result = Object.create(obj);\n    Object.freeze(result);\n  }\n  return result;\n};\n\n\n/**\n * @param {!Object} obj An object.\n * @return {boolean} Whether this is an immutable view of the object.\n */\ngoog.object.isImmutableView = function(obj) {\n  return !!Object.isFrozen && Object.isFrozen(obj);\n};\n\n\n/**\n * Get all properties names on a given Object regardless of enumerability.\n *\n * <p> If the browser does not support `Object.getOwnPropertyNames` nor\n * `Object.getPrototypeOf` then this is equivalent to using\n * `goog.object.getKeys`\n *\n * @param {?Object} obj The object to get the properties of.\n * @param {boolean=} opt_includeObjectPrototype Whether properties defined on\n *     `Object.prototype` should be included in the result.\n * @param {boolean=} opt_includeFunctionPrototype Whether properties defined on\n *     `Function.prototype` should be included in the result.\n * @return {!Array<string>}\n * @public\n */\ngoog.object.getAllPropertyNames = function(\n    obj, opt_includeObjectPrototype, opt_includeFunctionPrototype) {\n  if (!obj) {\n    return [];\n  }\n\n  // Naively use a for..in loop to get the property names if the browser doesn't\n  // support any other APIs for getting it.\n  if (!Object.getOwnPropertyNames || !Object.getPrototypeOf) {\n    return goog.object.getKeys(obj);\n  }\n\n  const visitedSet = {};\n\n  // Traverse the prototype chain and add all properties to the visited set.\n  let proto = obj;\n  while (proto &&\n         (proto !== Object.prototype || !!opt_includeObjectPrototype) &&\n         (proto !== Function.prototype || !!opt_includeFunctionPrototype)) {\n    const names = Object.getOwnPropertyNames(proto);\n    for (let i = 0; i < names.length; i++) {\n      visitedSet[names[i]] = true;\n    }\n    proto = Object.getPrototypeOf(proto);\n  }\n\n  return goog.object.getKeys(visitedSet);\n};\n\n\n/**\n * Given a ES5 or ES6 class reference, return its super class / super\n * constructor.\n *\n * This should be used in rare cases where you need to walk up the inheritance\n * tree (this is generally a bad idea). But this work with ES5 and ES6 classes,\n * unlike relying on the superClass_ property.\n *\n * Note: To start walking up the hierarchy from an instance call this with its\n * `constructor` property; e.g. `getSuperClass(instance.constructor)`.\n *\n * @param {function(new: ?)} constructor\n * @return {?Object}\n */\ngoog.object.getSuperClass = function(constructor) {\n  var proto = Object.getPrototypeOf(constructor.prototype);\n  return proto && proto.constructor;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\ngoog.provide('goog.dom.asserts');\n\ngoog.require('goog.asserts');\n\n/**\n * @fileoverview Custom assertions to ensure that an element has the appropriate\n * type.\n *\n * Using a goog.dom.safe wrapper on an object on the incorrect type (via an\n * incorrect static type cast) can result in security bugs: For instance,\n * g.d.s.setAnchorHref ensures that the URL assigned to the .href attribute\n * satisfies the SafeUrl contract, i.e., is safe to dereference as a hyperlink.\n * However, the value assigned to a HTMLLinkElement's .href property requires\n * the stronger TrustedResourceUrl contract, since it can refer to a stylesheet.\n * Thus, using g.d.s.setAnchorHref on an (incorrectly statically typed) object\n * of type HTMLLinkElement can result in a security vulnerability.\n * Assertions of the correct run-time type help prevent such incorrect use.\n *\n * In some cases, code using the DOM API is tested using mock objects (e.g., a\n * plain object such as {'href': url} instead of an actual Location object).\n * To allow such mocking, the assertions permit objects of types that are not\n * relevant DOM API objects at all (for instance, not Element or Location).\n *\n * Note that instanceof checks don't work straightforwardly in older versions of\n * IE, or across frames (see,\n * http://stackoverflow.com/questions/384286/javascript-isdom-how-do-you-check-if-a-javascript-object-is-a-dom-object,\n * http://stackoverflow.com/questions/26248599/instanceof-htmlelement-in-iframe-is-not-element-or-object).\n *\n * Hence, these assertions may pass vacuously in such scenarios. The resulting\n * risk of security bugs is limited by the following factors:\n *  - A bug can only arise in scenarios involving incorrect static typing (the\n *    wrapper methods are statically typed to demand objects of the appropriate,\n *    precise type).\n *  - Typically, code is tested and exercised in multiple browsers.\n */\n\n/**\n * Asserts that a given object is a Location.\n *\n * To permit this assertion to pass in the context of tests where DOM APIs might\n * be mocked, also accepts any other type except for subtypes of {!Element}.\n * This is to ensure that, for instance, HTMLLinkElement is not being used in\n * place of a Location, since this could result in security bugs due to stronger\n * contracts required for assignments to the href property of the latter.\n *\n * @param {?Object} o The object whose type to assert.\n * @return {!Location}\n */\ngoog.dom.asserts.assertIsLocation = function(o) {\n  if (goog.asserts.ENABLE_ASSERTS) {\n    var win = goog.dom.asserts.getWindow_(o);\n    if (win) {\n      if (!o || (!(o instanceof win.Location) && o instanceof win.Element)) {\n        goog.asserts.fail(\n            'Argument is not a Location (or a non-Element mock); got: %s',\n            goog.dom.asserts.debugStringForType_(o));\n      }\n    }\n  }\n  return /** @type {!Location} */ (o);\n};\n\n\n/**\n * Asserts that a given object is either the given subtype of Element\n * or a non-Element, non-Location Mock.\n *\n * To permit this assertion to pass in the context of tests where DOM\n * APIs might be mocked, also accepts any other type except for\n * subtypes of {!Element}.  This is to ensure that, for instance,\n * HTMLScriptElement is not being used in place of a HTMLImageElement,\n * since this could result in security bugs due to stronger contracts\n * required for assignments to the src property of the latter.\n *\n * The DOM type is looked up in the window the object belongs to.  In\n * some contexts, this might not be possible (e.g. when running tests\n * outside a browser, cross-domain lookup). In this case, the\n * assertions are skipped.\n *\n * @param {?Object} o The object whose type to assert.\n * @param {string} typename The name of the DOM type.\n * @return {!Element} The object.\n * @private\n */\n// TODO(bangert): Make an analog of goog.dom.TagName to correctly handle casts?\ngoog.dom.asserts.assertIsElementType_ = function(o, typename) {\n  if (goog.asserts.ENABLE_ASSERTS) {\n    var win = goog.dom.asserts.getWindow_(o);\n    if (win && typeof win[typename] != 'undefined') {\n      if (!o ||\n          (!(o instanceof win[typename]) &&\n           (o instanceof win.Location || o instanceof win.Element))) {\n        goog.asserts.fail(\n            'Argument is not a %s (or a non-Element, non-Location mock); ' +\n                'got: %s',\n            typename, goog.dom.asserts.debugStringForType_(o));\n      }\n    }\n  }\n  return /** @type {!Element} */ (o);\n};\n\n/**\n * Asserts that a given object is a HTMLAnchorElement.\n *\n * To permit this assertion to pass in the context of tests where elements might\n * be mocked, also accepts objects that are not of type Location nor a subtype\n * of Element.\n *\n * @param {?Object} o The object whose type to assert.\n * @return {!HTMLAnchorElement}\n * @deprecated Use goog.asserts.dom.assertIsHtmlAnchorElement instead.\n */\ngoog.dom.asserts.assertIsHTMLAnchorElement = function(o) {\n  return /** @type {!HTMLAnchorElement} */ (\n      goog.dom.asserts.assertIsElementType_(o, 'HTMLAnchorElement'));\n};\n\n/**\n * Asserts that a given object is a HTMLButtonElement.\n *\n * To permit this assertion to pass in the context of tests where elements might\n * be mocked, also accepts objects that are not a subtype of Element.\n *\n * @param {?Object} o The object whose type to assert.\n * @return {!HTMLButtonElement}\n * @deprecated Use goog.asserts.dom.assertIsHtmlButtonElement instead.\n */\ngoog.dom.asserts.assertIsHTMLButtonElement = function(o) {\n  return /** @type {!HTMLButtonElement} */ (\n      goog.dom.asserts.assertIsElementType_(o, 'HTMLButtonElement'));\n};\n\n/**\n * Asserts that a given object is a HTMLLinkElement.\n *\n * To permit this assertion to pass in the context of tests where elements might\n * be mocked, also accepts objects that are not a subtype of Element.\n *\n * @param {?Object} o The object whose type to assert.\n * @return {!HTMLLinkElement}\n * @deprecated Use goog.asserts.dom.assertIsHtmlLinkElement instead.\n */\ngoog.dom.asserts.assertIsHTMLLinkElement = function(o) {\n  return /** @type {!HTMLLinkElement} */ (\n      goog.dom.asserts.assertIsElementType_(o, 'HTMLLinkElement'));\n};\n\n/**\n * Asserts that a given object is a HTMLImageElement.\n *\n * To permit this assertion to pass in the context of tests where elements might\n * be mocked, also accepts objects that are not a subtype of Element.\n *\n * @param {?Object} o The object whose type to assert.\n * @return {!HTMLImageElement}\n * @deprecated Use goog.asserts.dom.assertIsHtmlImageElement instead.\n */\ngoog.dom.asserts.assertIsHTMLImageElement = function(o) {\n  return /** @type {!HTMLImageElement} */ (\n      goog.dom.asserts.assertIsElementType_(o, 'HTMLImageElement'));\n};\n\n/**\n * Asserts that a given object is a HTMLAudioElement.\n *\n * To permit this assertion to pass in the context of tests where elements might\n * be mocked, also accepts objects that are not a subtype of Element.\n *\n * @param {?Object} o The object whose type to assert.\n * @return {!HTMLAudioElement}\n * @deprecated Use goog.asserts.dom.assertIsHtmlAudioElement instead.\n */\ngoog.dom.asserts.assertIsHTMLAudioElement = function(o) {\n  return /** @type {!HTMLAudioElement} */ (\n      goog.dom.asserts.assertIsElementType_(o, 'HTMLAudioElement'));\n};\n\n/**\n * Asserts that a given object is a HTMLVideoElement.\n *\n * To permit this assertion to pass in the context of tests where elements might\n * be mocked, also accepts objects that are not a subtype of Element.\n *\n * @param {?Object} o The object whose type to assert.\n * @return {!HTMLVideoElement}\n * @deprecated Use goog.asserts.dom.assertIsHtmlVideoElement instead.\n */\ngoog.dom.asserts.assertIsHTMLVideoElement = function(o) {\n  return /** @type {!HTMLVideoElement} */ (\n      goog.dom.asserts.assertIsElementType_(o, 'HTMLVideoElement'));\n};\n\n/**\n * Asserts that a given object is a HTMLInputElement.\n *\n * To permit this assertion to pass in the context of tests where elements might\n * be mocked, also accepts objects that are not a subtype of Element.\n *\n * @param {?Object} o The object whose type to assert.\n * @return {!HTMLInputElement}\n * @deprecated Use goog.asserts.dom.assertIsHtmlInputElement instead.\n */\ngoog.dom.asserts.assertIsHTMLInputElement = function(o) {\n  return /** @type {!HTMLInputElement} */ (\n      goog.dom.asserts.assertIsElementType_(o, 'HTMLInputElement'));\n};\n\n/**\n * Asserts that a given object is a HTMLTextAreaElement.\n *\n * To permit this assertion to pass in the context of tests where elements might\n * be mocked, also accepts objects that are not a subtype of Element.\n *\n * @param {?Object} o The object whose type to assert.\n * @return {!HTMLTextAreaElement}\n * @deprecated Use goog.asserts.dom.assertIsHtmlTextAreaElement instead.\n */\ngoog.dom.asserts.assertIsHTMLTextAreaElement = function(o) {\n  return /** @type {!HTMLTextAreaElement} */ (\n      goog.dom.asserts.assertIsElementType_(o, 'HTMLTextAreaElement'));\n};\n\n/**\n * Asserts that a given object is a HTMLCanvasElement.\n *\n * To permit this assertion to pass in the context of tests where elements might\n * be mocked, also accepts objects that are not a subtype of Element.\n *\n * @param {?Object} o The object whose type to assert.\n * @return {!HTMLCanvasElement}\n * @deprecated Use goog.asserts.dom.assertIsHtmlCanvasElement instead.\n */\ngoog.dom.asserts.assertIsHTMLCanvasElement = function(o) {\n  return /** @type {!HTMLCanvasElement} */ (\n      goog.dom.asserts.assertIsElementType_(o, 'HTMLCanvasElement'));\n};\n\n/**\n * Asserts that a given object is a HTMLEmbedElement.\n *\n * To permit this assertion to pass in the context of tests where elements might\n * be mocked, also accepts objects that are not a subtype of Element.\n *\n * @param {?Object} o The object whose type to assert.\n * @return {!HTMLEmbedElement}\n * @deprecated Use goog.asserts.dom.assertIsHtmlEmbedElement instead.\n */\ngoog.dom.asserts.assertIsHTMLEmbedElement = function(o) {\n  return /** @type {!HTMLEmbedElement} */ (\n      goog.dom.asserts.assertIsElementType_(o, 'HTMLEmbedElement'));\n};\n\n/**\n * Asserts that a given object is a HTMLFormElement.\n *\n * To permit this assertion to pass in the context of tests where elements might\n * be mocked, also accepts objects that are not a subtype of Element.\n *\n * @param {?Object} o The object whose type to assert.\n * @return {!HTMLFormElement}\n * @deprecated Use goog.asserts.dom.assertIsHtmlFormElement instead.\n */\ngoog.dom.asserts.assertIsHTMLFormElement = function(o) {\n  return /** @type {!HTMLFormElement} */ (\n      goog.dom.asserts.assertIsElementType_(o, 'HTMLFormElement'));\n};\n\n/**\n * Asserts that a given object is a HTMLFrameElement.\n *\n * To permit this assertion to pass in the context of tests where elements might\n * be mocked, also accepts objects that are not a subtype of Element.\n *\n * @param {?Object} o The object whose type to assert.\n * @return {!HTMLFrameElement}\n * @deprecated Use goog.asserts.dom.assertIsHtmlFrameElement instead.\n */\ngoog.dom.asserts.assertIsHTMLFrameElement = function(o) {\n  return /** @type {!HTMLFrameElement} */ (\n      goog.dom.asserts.assertIsElementType_(o, 'HTMLFrameElement'));\n};\n\n/**\n * Asserts that a given object is a HTMLIFrameElement.\n *\n * To permit this assertion to pass in the context of tests where elements might\n * be mocked, also accepts objects that are not a subtype of Element.\n *\n * @param {?Object} o The object whose type to assert.\n * @return {!HTMLIFrameElement}\n * @deprecated Use goog.asserts.dom.assertIsHtmlIFrameElement instead.\n */\ngoog.dom.asserts.assertIsHTMLIFrameElement = function(o) {\n  return /** @type {!HTMLIFrameElement} */ (\n      goog.dom.asserts.assertIsElementType_(o, 'HTMLIFrameElement'));\n};\n\n/**\n * Asserts that a given object is a HTMLObjectElement.\n *\n * To permit this assertion to pass in the context of tests where elements might\n * be mocked, also accepts objects that are not a subtype of Element.\n *\n * @param {?Object} o The object whose type to assert.\n * @return {!HTMLObjectElement}\n * @deprecated Use goog.asserts.dom.assertIsHtmlObjectElement instead.\n */\ngoog.dom.asserts.assertIsHTMLObjectElement = function(o) {\n  return /** @type {!HTMLObjectElement} */ (\n      goog.dom.asserts.assertIsElementType_(o, 'HTMLObjectElement'));\n};\n\n/**\n * Asserts that a given object is a HTMLScriptElement.\n *\n * To permit this assertion to pass in the context of tests where elements might\n * be mocked, also accepts objects that are not a subtype of Element.\n *\n * @param {?Object} o The object whose type to assert.\n * @return {!HTMLScriptElement}\n * @deprecated Use goog.asserts.dom.assertIsHtmlScriptElement instead.\n */\ngoog.dom.asserts.assertIsHTMLScriptElement = function(o) {\n  return /** @type {!HTMLScriptElement} */ (\n      goog.dom.asserts.assertIsElementType_(o, 'HTMLScriptElement'));\n};\n\n/**\n * Returns a string representation of a value's type.\n *\n * @param {*} value An object, or primitive.\n * @return {string} The best display name for the value.\n * @private\n */\ngoog.dom.asserts.debugStringForType_ = function(value) {\n  if (goog.isObject(value)) {\n    try {\n      return /** @type {string|undefined} */ (value.constructor.displayName) ||\n          value.constructor.name || Object.prototype.toString.call(value);\n    } catch (e) {\n      return '<object could not be stringified>';\n    }\n  } else {\n    return value === undefined ? 'undefined' :\n                                 value === null ? 'null' : typeof value;\n  }\n};\n\n/**\n * Gets window of element.\n * @param {?Object} o\n * @return {?Window}\n * @private\n * @suppress {strictMissingProperties} ownerDocument not defined on Object\n */\ngoog.dom.asserts.getWindow_ = function(o) {\n  try {\n    var doc = o && o.ownerDocument;\n    // This can throw “Blocked a frame with origin \"chrome-extension://...\" from\n    // accessing a cross-origin frame” in Chrome extension.\n    var win =\n        doc && /** @type {?Window} */ (doc.defaultView || doc.parentWindow);\n    win = win || /** @type {!Window} */ (goog.global);\n    // This can throw “Permission denied to access property \"Element\" on\n    // cross-origin object”.\n    if (win.Element && win.Location) {\n      return win;\n    }\n  } catch (ex) {\n  }\n  return null;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\ngoog.provide('goog.string.Const');\n\ngoog.require('goog.asserts');\ngoog.require('goog.string.TypedString');\n\n\n\n/**\n * Wrapper for compile-time-constant strings.\n *\n * Const is a wrapper for strings that can only be created from program\n * constants (i.e., string literals).  This property relies on a custom Closure\n * compiler check that `goog.string.Const.from` is only invoked on\n * compile-time-constant expressions.\n *\n * Const is useful in APIs whose correct and secure use requires that certain\n * arguments are not attacker controlled: Compile-time constants are inherently\n * under the control of the application and not under control of external\n * attackers, and hence are safe to use in such contexts.\n *\n * Instances of this type must be created via its factory method\n * `goog.string.Const.from` and not by invoking its constructor.  The\n * constructor intentionally takes no parameters and the type is immutable;\n * hence only a default instance corresponding to the empty string can be\n * obtained via constructor invocation.  Use goog.string.Const.EMPTY\n * instead of using this constructor to get an empty Const string.\n *\n * @see goog.string.Const#from\n * @constructor\n * @final\n * @struct\n * @implements {goog.string.TypedString}\n * @param {Object=} opt_token package-internal implementation detail.\n * @param {string=} opt_content package-internal implementation detail.\n */\ngoog.string.Const = function(opt_token, opt_content) {\n  'use strict';\n  /**\n   * The wrapped value of this Const object.  The field has a purposely ugly\n   * name to make (non-compiled) code that attempts to directly access this\n   * field stand out.\n   * @private {string}\n   */\n  this.stringConstValueWithSecurityContract__googStringSecurityPrivate_ =\n      ((opt_token ===\n        goog.string.Const.GOOG_STRING_CONSTRUCTOR_TOKEN_PRIVATE_) &&\n       opt_content) ||\n      '';\n\n  /**\n   * A type marker used to implement additional run-time type checking.\n   * @see goog.string.Const#unwrap\n   * @const {!Object}\n   * @private\n   */\n  this.STRING_CONST_TYPE_MARKER__GOOG_STRING_SECURITY_PRIVATE_ =\n      goog.string.Const.TYPE_MARKER_;\n};\n\n\n/**\n * @override\n * @const\n */\ngoog.string.Const.prototype.implementsGoogStringTypedString = true;\n\n\n/**\n * Returns this Const's value as a string.\n *\n * IMPORTANT: In code where it is security-relevant that an object's type is\n * indeed `goog.string.Const`, use `goog.string.Const.unwrap`\n * instead of this method.\n *\n * @see goog.string.Const#unwrap\n * @override\n */\ngoog.string.Const.prototype.getTypedStringValue = function() {\n  'use strict';\n  return this.stringConstValueWithSecurityContract__googStringSecurityPrivate_;\n};\n\n\nif (goog.DEBUG) {\n  /**\n   * Returns a debug-string representation of this value.\n   *\n   * To obtain the actual string value wrapped inside an object of this type,\n   * use `goog.string.Const.unwrap`.\n   *\n   * @see goog.string.Const#unwrap\n   * @override\n   */\n  goog.string.Const.prototype.toString = function() {\n    'use strict';\n    return 'Const{' +\n        this.stringConstValueWithSecurityContract__googStringSecurityPrivate_ +\n        '}';\n  };\n}\n\n\n/**\n * Performs a runtime check that the provided object is indeed an instance\n * of `goog.string.Const`, and returns its value.\n * @param {!goog.string.Const} stringConst The object to extract from.\n * @return {string} The Const object's contained string, unless the run-time\n *     type check fails. In that case, `unwrap` returns an innocuous\n *     string, or, if assertions are enabled, throws\n *     `goog.asserts.AssertionError`.\n */\ngoog.string.Const.unwrap = function(stringConst) {\n  'use strict';\n  // Perform additional run-time type-checking to ensure that stringConst is\n  // indeed an instance of the expected type.  This provides some additional\n  // protection against security bugs due to application code that disables type\n  // checks.\n  if (stringConst instanceof goog.string.Const &&\n      stringConst.constructor === goog.string.Const &&\n      stringConst.STRING_CONST_TYPE_MARKER__GOOG_STRING_SECURITY_PRIVATE_ ===\n          goog.string.Const.TYPE_MARKER_) {\n    return stringConst\n        .stringConstValueWithSecurityContract__googStringSecurityPrivate_;\n  } else {\n    goog.asserts.fail(\n        'expected object of type Const, got \\'' + stringConst + '\\'');\n    return 'type_error:Const';\n  }\n};\n\n\n/**\n * Creates a Const object from a compile-time constant string.\n *\n * It is illegal to invoke this function on an expression whose\n * compile-time-constant value cannot be determined by the Closure compiler.\n *\n * Correct invocations include,\n * <pre>\n *   var s = goog.string.Const.from('hello');\n *   var t = goog.string.Const.from('hello' + 'world');\n * </pre>\n *\n * In contrast, the following are illegal:\n * <pre>\n *   var s = goog.string.Const.from(getHello());\n *   var t = goog.string.Const.from('hello' + world);\n * </pre>\n *\n * @param {string} s A constant string from which to create a Const.\n * @return {!goog.string.Const} A Const object initialized to stringConst.\n */\ngoog.string.Const.from = function(s) {\n  'use strict';\n  return new goog.string.Const(\n      goog.string.Const.GOOG_STRING_CONSTRUCTOR_TOKEN_PRIVATE_, s);\n};\n\n/**\n * Type marker for the Const type, used to implement additional run-time\n * type checking.\n * @const {!Object}\n * @private\n */\ngoog.string.Const.TYPE_MARKER_ = {};\n\n/**\n * @type {!Object}\n * @private\n * @const\n */\ngoog.string.Const.GOOG_STRING_CONSTRUCTOR_TOKEN_PRIVATE_ = {};\n\n/**\n * A Const instance wrapping the empty string.\n * @const {!goog.string.Const}\n */\ngoog.string.Const.EMPTY = goog.string.Const.from('');\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Policy to convert strings to Trusted Types. See\n * https://github.com/WICG/trusted-types for details.\n */\n\ngoog.provide('goog.html.trustedtypes');\n\n\n/**\n * Cached result of goog.createTrustedTypesPolicy.\n * @type {?TrustedTypePolicy|undefined}\n * @private\n */\ngoog.html.trustedtypes.cachedPolicy_;\n\n\n/**\n * Creates a (singleton) Trusted Type Policy for Safe HTML Types.\n * @return {?TrustedTypePolicy}\n * @package\n */\ngoog.html.trustedtypes.getPolicyPrivateDoNotAccessOrElse = function() {\n  if (!goog.TRUSTED_TYPES_POLICY_NAME) {\n    // Binary not configured for Trusted Types.\n    return null;\n  }\n\n  if (goog.html.trustedtypes.cachedPolicy_ === undefined) {\n    goog.html.trustedtypes.cachedPolicy_ =\n        goog.createTrustedTypesPolicy(goog.TRUSTED_TYPES_POLICY_NAME + '#html');\n  }\n\n  return goog.html.trustedtypes.cachedPolicy_;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview The TrustedResourceUrl type and its builders.\n *\n * TODO(xtof): Link to document stating type contract.\n */\n\ngoog.provide('goog.html.TrustedResourceUrl');\n\ngoog.require('goog.asserts');\ngoog.require('goog.fs.blob');\ngoog.require('goog.fs.url');\ngoog.require('goog.html.SafeScript');\ngoog.require('goog.html.trustedtypes');\ngoog.require('goog.i18n.bidi.Dir');\ngoog.require('goog.i18n.bidi.DirectionalString');\ngoog.require('goog.string.Const');\ngoog.require('goog.string.TypedString');\n\n\n\n/**\n * A URL which is under application control and from which script, CSS, and\n * other resources that represent executable code, can be fetched.\n *\n * Given that the URL can only be constructed from strings under application\n * control and is used to load resources, bugs resulting in a malformed URL\n * should not have a security impact and are likely to be easily detectable\n * during testing. Given the wide number of non-RFC compliant URLs in use,\n * stricter validation could prevent some applications from being able to use\n * this type.\n *\n * Instances of this type must be created via the factory method,\n * (`fromConstant`, `fromConstants`, `format` or `formatWithParams`), and not by\n * invoking its constructor. The constructor intentionally takes an extra\n * parameter that cannot be constructed outside of this file and the type is\n * immutable; hence only a default instance corresponding to the empty string\n * can be obtained via constructor invocation.\n *\n * Creating TrustedResourceUrl objects HAS SIDE-EFFECTS due to calling\n * Trusted Types Web API.\n *\n * @see goog.html.TrustedResourceUrl#fromConstant\n * @final\n * @struct\n * @implements {goog.i18n.bidi.DirectionalString}\n * @implements {goog.string.TypedString}\n */\ngoog.html.TrustedResourceUrl = class {\n  /**\n   * @param {!TrustedScriptURL|string} value\n   * @param {!Object} token package-internal implementation detail.\n   */\n  constructor(value, token) {\n    /**\n     * The contained value of this TrustedResourceUrl.  The field has a\n     * purposely ugly name to make (non-compiled) code that attempts to directly\n     * access this field stand out.\n     * @const\n     * @private {!TrustedScriptURL|string}\n     */\n    this.privateDoNotAccessOrElseTrustedResourceUrlWrappedValue_ =\n        (token === goog.html.TrustedResourceUrl.CONSTRUCTOR_TOKEN_PRIVATE_) ?\n        value :\n        '';\n  }\n};\n\n\n/**\n * @override\n * @const\n */\ngoog.html.TrustedResourceUrl.prototype.implementsGoogStringTypedString = true;\n\n\n/**\n * Returns this TrustedResourceUrl's value as a string.\n *\n * IMPORTANT: In code where it is security relevant that an object's type is\n * indeed `TrustedResourceUrl`, use\n * `goog.html.TrustedResourceUrl.unwrap` instead of this method. If in\n * doubt, assume that it's security relevant. In particular, note that\n * goog.html functions which return a goog.html type do not guarantee that\n * the returned instance is of the right type. For example:\n *\n * <pre>\n * var fakeSafeHtml = new String('fake');\n * fakeSafeHtml.__proto__ = goog.html.SafeHtml.prototype;\n * var newSafeHtml = goog.html.SafeHtml.htmlEscape(fakeSafeHtml);\n * // newSafeHtml is just an alias for fakeSafeHtml, it's passed through by\n * // goog.html.SafeHtml.htmlEscape() as fakeSafeHtml instanceof\n * // goog.html.SafeHtml.\n * </pre>\n *\n * @see goog.html.TrustedResourceUrl#unwrap\n * @override\n */\ngoog.html.TrustedResourceUrl.prototype.getTypedStringValue = function() {\n  return this.privateDoNotAccessOrElseTrustedResourceUrlWrappedValue_\n      .toString();\n};\n\n\n/**\n * @override\n * @const\n */\ngoog.html.TrustedResourceUrl.prototype.implementsGoogI18nBidiDirectionalString =\n    true;\n\n\n/**\n * Returns this URLs directionality, which is always `LTR`.\n * @override\n */\ngoog.html.TrustedResourceUrl.prototype.getDirection = function() {\n  return goog.i18n.bidi.Dir.LTR;\n};\n\n\n/**\n * Creates a new TrustedResourceUrl with params added to URL. Both search and\n * hash params can be specified.\n *\n * @param {string|?Object<string, *>|undefined} searchParams Search parameters\n *     to add to URL. See goog.html.TrustedResourceUrl.stringifyParams_ for\n *     exact format definition.\n * @param {(string|?Object<string, *>)=} opt_hashParams Hash parameters to add\n *     to URL. See goog.html.TrustedResourceUrl.stringifyParams_ for exact\n *     format definition.\n * @return {!goog.html.TrustedResourceUrl} New TrustedResourceUrl with params.\n */\ngoog.html.TrustedResourceUrl.prototype.cloneWithParams = function(\n    searchParams, opt_hashParams) {\n  var url = goog.html.TrustedResourceUrl.unwrap(this);\n  var parts = goog.html.TrustedResourceUrl.URL_PARAM_PARSER_.exec(url);\n  var urlBase = parts[1];\n  var urlSearch = parts[2] || '';\n  var urlHash = parts[3] || '';\n\n  return goog.html.TrustedResourceUrl\n      .createTrustedResourceUrlSecurityPrivateDoNotAccessOrElse(\n          urlBase +\n          goog.html.TrustedResourceUrl.stringifyParams_(\n              '?', urlSearch, searchParams) +\n          goog.html.TrustedResourceUrl.stringifyParams_(\n              '#', urlHash, opt_hashParams));\n};\n\n\nif (goog.DEBUG) {\n  /**\n   * Returns a debug string-representation of this value.\n   *\n   * To obtain the actual string value wrapped in a TrustedResourceUrl, use\n   * `goog.html.TrustedResourceUrl.unwrap`.\n   *\n   * @see goog.html.TrustedResourceUrl#unwrap\n   * @override\n   */\n  goog.html.TrustedResourceUrl.prototype.toString = function() {\n    return 'TrustedResourceUrl{' +\n        this.privateDoNotAccessOrElseTrustedResourceUrlWrappedValue_ + '}';\n  };\n}\n\n\n/**\n * Performs a runtime check that the provided object is indeed a\n * TrustedResourceUrl object, and returns its value.\n *\n * @param {!goog.html.TrustedResourceUrl} trustedResourceUrl The object to\n *     extract from.\n * @return {string} The trustedResourceUrl object's contained string, unless\n *     the run-time type check fails. In that case, `unwrap` returns an\n *     innocuous string, or, if assertions are enabled, throws\n *     `goog.asserts.AssertionError`.\n */\ngoog.html.TrustedResourceUrl.unwrap = function(trustedResourceUrl) {\n  return goog.html.TrustedResourceUrl.unwrapTrustedScriptURL(trustedResourceUrl)\n      .toString();\n};\n\n\n/**\n * Unwraps value as TrustedScriptURL if supported or as a string if not.\n * @param {!goog.html.TrustedResourceUrl} trustedResourceUrl\n * @return {!TrustedScriptURL|string}\n * @see goog.html.TrustedResourceUrl.unwrap\n */\ngoog.html.TrustedResourceUrl.unwrapTrustedScriptURL = function(\n    trustedResourceUrl) {\n  // Perform additional Run-time type-checking to ensure that\n  // trustedResourceUrl is indeed an instance of the expected type.  This\n  // provides some additional protection against security bugs due to\n  // application code that disables type checks.\n  // Specifically, the following checks are performed:\n  // 1. The object is an instance of the expected type.\n  // 2. The object is not an instance of a subclass.\n  if (trustedResourceUrl instanceof goog.html.TrustedResourceUrl &&\n      trustedResourceUrl.constructor === goog.html.TrustedResourceUrl) {\n    return trustedResourceUrl\n        .privateDoNotAccessOrElseTrustedResourceUrlWrappedValue_;\n  } else {\n    goog.asserts.fail('expected object of type TrustedResourceUrl, got \\'' +\n        trustedResourceUrl + '\\' of type ' + goog.typeOf(trustedResourceUrl));\n    return 'type_error:TrustedResourceUrl';\n  }\n};\n\n\n/**\n * Creates a TrustedResourceUrl from a format string and arguments.\n *\n * The arguments for interpolation into the format string map labels to values.\n * Values of type `goog.string.Const` are interpolated without modifcation.\n * Values of other types are cast to string and encoded with\n * encodeURIComponent.\n *\n * `%{<label>}` markers are used in the format string to indicate locations\n * to be interpolated with the valued mapped to the given label. `<label>`\n * must contain only alphanumeric and `_` characters.\n *\n * The format string must match goog.html.TrustedResourceUrl.BASE_URL_.\n *\n * Example usage:\n *\n *    var url = goog.html.TrustedResourceUrl.format(goog.string.Const.from(\n *        'https://www.google.com/search?q=%{query}'), {'query': searchTerm});\n *\n *    var url = goog.html.TrustedResourceUrl.format(goog.string.Const.from(\n *        '//www.youtube.com/v/%{videoId}?hl=en&fs=1%{autoplay}'), {\n *        'videoId': videoId,\n *        'autoplay': opt_autoplay ?\n *            goog.string.Const.from('&autoplay=1') : goog.string.Const.EMPTY\n *    });\n *\n * While this function can be used to create a TrustedResourceUrl from only\n * constants, fromConstant() and fromConstants() are generally preferable for\n * that purpose.\n *\n * @param {!goog.string.Const} format The format string.\n * @param {!Object<string, (string|number|!goog.string.Const)>} args Mapping\n *     of labels to values to be interpolated into the format string.\n *     goog.string.Const values are interpolated without encoding.\n * @return {!goog.html.TrustedResourceUrl}\n * @throws {!Error} On an invalid format string or if a label used in the\n *     the format string is not present in args.\n */\ngoog.html.TrustedResourceUrl.format = function(format, args) {\n  var formatStr = goog.string.Const.unwrap(format);\n  if (!goog.html.TrustedResourceUrl.BASE_URL_.test(formatStr)) {\n    throw new Error('Invalid TrustedResourceUrl format: ' + formatStr);\n  }\n  var result = formatStr.replace(\n      goog.html.TrustedResourceUrl.FORMAT_MARKER_, function(match, id) {\n        if (!Object.prototype.hasOwnProperty.call(args, id)) {\n          throw new Error(\n              'Found marker, \"' + id + '\", in format string, \"' + formatStr +\n              '\", but no valid label mapping found ' +\n              'in args: ' + JSON.stringify(args));\n        }\n        var arg = args[id];\n        if (arg instanceof goog.string.Const) {\n          return goog.string.Const.unwrap(arg);\n        } else {\n          return encodeURIComponent(String(arg));\n        }\n      });\n  return goog.html.TrustedResourceUrl\n      .createTrustedResourceUrlSecurityPrivateDoNotAccessOrElse(result);\n};\n\n\n/**\n * @private @const {!RegExp}\n */\ngoog.html.TrustedResourceUrl.FORMAT_MARKER_ = /%{(\\w+)}/g;\n\n\n/**\n * The URL must be absolute, scheme-relative or path-absolute. So it must\n * start with:\n * - https:// followed by allowed origin characters.\n * - // followed by allowed origin characters.\n * - Any absolute or relative path.\n *\n * Based on\n * https://url.spec.whatwg.org/commit-snapshots/56b74ce7cca8883eab62e9a12666e2fac665d03d/#url-parsing\n * an initial / which is not followed by another / or \\ will end up in the \"path\n * state\" and from there it can only go to \"fragment state\" and \"query state\".\n *\n * We don't enforce a well-formed domain name. So '.' or '1.2' are valid.\n * That's ok because the origin comes from a compile-time constant.\n *\n * A regular expression is used instead of goog.uri for several reasons:\n * - Strictness. E.g. we don't want any userinfo component and we don't\n *   want '/./, nor \\' in the first path component.\n * - Small trusted base. goog.uri is generic and might need to change,\n *   reasoning about all the ways it can parse a URL now and in the future\n *   is error-prone.\n * - Code size. We expect many calls to .format(), many of which might\n *   not be using goog.uri.\n * - Simplicity. Using goog.uri would likely not result in simpler nor shorter\n *   code.\n * @private @const {!RegExp}\n */\ngoog.html.TrustedResourceUrl.BASE_URL_ = new RegExp(\n    '^((https:)?//[0-9a-z.:[\\\\]-]+/'  // Origin.\n        + '|/[^/\\\\\\\\]'                // Absolute path.\n        + '|[^:/\\\\\\\\%]+/'             // Relative path.\n        + '|[^:/\\\\\\\\%]*[?#]'          // Query string or fragment.\n        + '|about:blank#'             // about:blank with fragment.\n        + ')',\n    'i');\n\n/**\n * RegExp for splitting a URL into the base, search field, and hash field.\n *\n * @private @const {!RegExp}\n */\ngoog.html.TrustedResourceUrl.URL_PARAM_PARSER_ =\n    /^([^?#]*)(\\?[^#]*)?(#[\\s\\S]*)?/;\n\n\n/**\n * Formats the URL same as TrustedResourceUrl.format and then adds extra URL\n * parameters.\n *\n * Example usage:\n *\n *     // Creates '//www.youtube.com/v/abc?autoplay=1' for videoId='abc' and\n *     // opt_autoplay=1. Creates '//www.youtube.com/v/abc' for videoId='abc'\n *     // and opt_autoplay=undefined.\n *     var url = goog.html.TrustedResourceUrl.formatWithParams(\n *         goog.string.Const.from('//www.youtube.com/v/%{videoId}'),\n *         {'videoId': videoId},\n *         {'autoplay': opt_autoplay});\n *\n * @param {!goog.string.Const} format The format string.\n * @param {!Object<string, (string|number|!goog.string.Const)>} args Mapping\n *     of labels to values to be interpolated into the format string.\n *     goog.string.Const values are interpolated without encoding.\n * @param {string|?Object<string, *>|undefined} searchParams Parameters to add\n *     to URL. See goog.html.TrustedResourceUrl.stringifyParams_ for exact\n *     format definition.\n * @param {(string|?Object<string, *>)=} opt_hashParams Hash parameters to add\n *     to URL. See goog.html.TrustedResourceUrl.stringifyParams_ for exact\n *     format definition.\n * @return {!goog.html.TrustedResourceUrl}\n * @throws {!Error} On an invalid format string or if a label used in the\n *     the format string is not present in args.\n */\ngoog.html.TrustedResourceUrl.formatWithParams = function(\n    format, args, searchParams, opt_hashParams) {\n  var url = goog.html.TrustedResourceUrl.format(format, args);\n  return url.cloneWithParams(searchParams, opt_hashParams);\n};\n\n\n/**\n * Creates a TrustedResourceUrl object from a compile-time constant string.\n *\n * Compile-time constant strings are inherently program-controlled and hence\n * trusted.\n *\n * @param {!goog.string.Const} url A compile-time-constant string from which to\n *     create a TrustedResourceUrl.\n * @return {!goog.html.TrustedResourceUrl} A TrustedResourceUrl object\n *     initialized to `url`.\n */\ngoog.html.TrustedResourceUrl.fromConstant = function(url) {\n  return goog.html.TrustedResourceUrl\n      .createTrustedResourceUrlSecurityPrivateDoNotAccessOrElse(\n          goog.string.Const.unwrap(url));\n};\n\n\n/**\n * Creates a TrustedResourceUrl object from a compile-time constant strings.\n *\n * Compile-time constant strings are inherently program-controlled and hence\n * trusted.\n *\n * @param {!Array<!goog.string.Const>} parts Compile-time-constant strings from\n *     which to create a TrustedResourceUrl.\n * @return {!goog.html.TrustedResourceUrl} A TrustedResourceUrl object\n *     initialized to concatenation of `parts`.\n */\ngoog.html.TrustedResourceUrl.fromConstants = function(parts) {\n  var unwrapped = '';\n  for (var i = 0; i < parts.length; i++) {\n    unwrapped += goog.string.Const.unwrap(parts[i]);\n  }\n  return goog.html.TrustedResourceUrl\n      .createTrustedResourceUrlSecurityPrivateDoNotAccessOrElse(unwrapped);\n};\n\n/**\n * Creates a TrustedResourceUrl object by generating a Blob from a SafeScript\n * object and then calling createObjectURL with that blob.\n *\n * SafeScript objects are trusted to contain executable JavaScript code.\n *\n * Caller must call goog.fs.url.revokeObjectUrl() on the unwrapped url to\n * release the underlying blob.\n *\n * Throws if browser doesn't support blob construction.\n *\n * @param {!goog.html.SafeScript} safeScript A script from which to create a\n *     TrustedResourceUrl.\n * @return {!goog.html.TrustedResourceUrl} A TrustedResourceUrl object\n *     initialized to a new blob URL.\n */\ngoog.html.TrustedResourceUrl.fromSafeScript = function(safeScript) {\n  var blob = goog.fs.blob.getBlobWithProperties(\n      [goog.html.SafeScript.unwrap(safeScript)], 'text/javascript');\n  var url = goog.fs.url.createObjectUrl(blob);\n  return goog.html.TrustedResourceUrl\n      .createTrustedResourceUrlSecurityPrivateDoNotAccessOrElse(url);\n};\n\n\n/**\n * Token used to ensure that object is created only from this file. No code\n * outside of this file can access this token.\n * @private {!Object}\n * @const\n */\ngoog.html.TrustedResourceUrl.CONSTRUCTOR_TOKEN_PRIVATE_ = {};\n\n\n/**\n * Package-internal utility method to create TrustedResourceUrl instances.\n *\n * @param {string} url The string to initialize the TrustedResourceUrl object\n *     with.\n * @return {!goog.html.TrustedResourceUrl} The initialized TrustedResourceUrl\n *     object.\n * @package\n */\ngoog.html.TrustedResourceUrl\n    .createTrustedResourceUrlSecurityPrivateDoNotAccessOrElse = function(url) {\n  const policy = goog.html.trustedtypes.getPolicyPrivateDoNotAccessOrElse();\n  var value = policy ? policy.createScriptURL(url) : url;\n  return new goog.html.TrustedResourceUrl(\n      value, goog.html.TrustedResourceUrl.CONSTRUCTOR_TOKEN_PRIVATE_);\n};\n\n\n/**\n * Stringifies the passed params to be used as either a search or hash field of\n * a URL.\n *\n * @param {string} prefix The prefix character for the given field ('?' or '#').\n * @param {string} currentString The existing field value (including the prefix\n *     character, if the field is present).\n * @param {string|?Object<string, *>|undefined} params The params to set or\n *     append to the field.\n * - If `undefined` or `null`, the field remains unchanged.\n * - If a string, then the string will be escaped and the field will be\n *   overwritten with that value.\n * - If an Object, that object is treated as a set of key-value pairs to be\n *   appended to the current field. Note that JavaScript doesn't guarantee the\n *   order of values in an object which might result in non-deterministic order\n *   of the parameters. However, browsers currently preserve the order. The\n *   rules for each entry:\n *   - If an array, it will be processed as if each entry were an additional\n *     parameter with exactly the same key, following the same logic below.\n *   - If `undefined` or `null`, it will be skipped.\n *   - Otherwise, it will be turned into a string, escaped, and appended.\n * @return {string}\n * @private\n */\ngoog.html.TrustedResourceUrl.stringifyParams_ = function(\n    prefix, currentString, params) {\n  if (params == null) {\n    // Do not modify the field.\n    return currentString;\n  }\n  if (typeof params === 'string') {\n    // Set field to the passed string.\n    return params ? prefix + encodeURIComponent(params) : '';\n  }\n  // Add on parameters to field from key-value object.\n  for (var key in params) {\n    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty#Using_hasOwnProperty_as_a_property_name\n    if (Object.prototype.hasOwnProperty.call(params, key)) {\n      var value = params[key];\n      var outputValues = Array.isArray(value) ? value : [value];\n      for (var i = 0; i < outputValues.length; i++) {\n        var outputValue = outputValues[i];\n        if (outputValue != null) {\n          if (!currentString) {\n            currentString = prefix;\n          }\n          currentString += (currentString.length > prefix.length ? '&' : '') +\n              encodeURIComponent(key) + '=' +\n              encodeURIComponent(String(outputValue));\n        }\n      }\n    }\n  }\n  return currentString;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview The SafeUrl type and its builders.\n *\n * TODO(xtof): Link to document stating type contract.\n */\n\ngoog.provide('goog.html.SafeUrl');\n\ngoog.require('goog.asserts');\ngoog.require('goog.fs.url');\ngoog.require('goog.html.TrustedResourceUrl');\ngoog.require('goog.i18n.bidi.Dir');\ngoog.require('goog.i18n.bidi.DirectionalString');\ngoog.require('goog.string.Const');\ngoog.require('goog.string.TypedString');\ngoog.require('goog.string.internal');\n\n\n\n/**\n * A string that is safe to use in URL context in DOM APIs and HTML documents.\n *\n * A SafeUrl is a string-like object that carries the security type contract\n * that its value as a string will not cause untrusted script execution\n * when evaluated as a hyperlink URL in a browser.\n *\n * Values of this type are guaranteed to be safe to use in URL/hyperlink\n * contexts, such as assignment to URL-valued DOM properties, in the sense that\n * the use will not result in a Cross-Site-Scripting vulnerability. Similarly,\n * SafeUrls can be interpolated into the URL context of an HTML template (e.g.,\n * inside a href attribute). However, appropriate HTML-escaping must still be\n * applied.\n *\n * Note that, as documented in `goog.html.SafeUrl.unwrap`, this type's\n * contract does not guarantee that instances are safe to interpolate into HTML\n * without appropriate escaping.\n *\n * Note also that this type's contract does not imply any guarantees regarding\n * the resource the URL refers to.  In particular, SafeUrls are <b>not</b>\n * safe to use in a context where the referred-to resource is interpreted as\n * trusted code, e.g., as the src of a script tag.\n *\n * Instances of this type must be created via the factory methods\n * (`goog.html.SafeUrl.fromConstant`, `goog.html.SafeUrl.sanitize`),\n * etc and not by invoking its constructor. The constructor intentionally takes\n * an extra parameter that cannot be constructed outside of this file and the\n * type is immutable; hence only a default instance corresponding to the empty\n * string can be obtained via constructor invocation.\n *\n * @see goog.html.SafeUrl#fromConstant\n * @see goog.html.SafeUrl#from\n * @see goog.html.SafeUrl#sanitize\n * @final\n * @struct\n * @implements {goog.i18n.bidi.DirectionalString}\n * @implements {goog.string.TypedString}\n */\ngoog.html.SafeUrl = class {\n  /**\n   * @param {string} value\n   * @param {!Object} token package-internal implementation detail.\n   */\n  constructor(value, token) {\n    /**\n     * The contained value of this SafeUrl.  The field has a purposely ugly\n     * name to make (non-compiled) code that attempts to directly access this\n     * field stand out.\n     * @private {string}\n     */\n    this.privateDoNotAccessOrElseSafeUrlWrappedValue_ =\n        (token === goog.html.SafeUrl.CONSTRUCTOR_TOKEN_PRIVATE_) ? value : '';\n  };\n};\n\n\n/**\n * The innocuous string generated by goog.html.SafeUrl.sanitize when passed\n * an unsafe URL.\n *\n * about:invalid is registered in\n * http://www.w3.org/TR/css3-values/#about-invalid.\n * http://tools.ietf.org/html/rfc6694#section-2.2.1 permits about URLs to\n * contain a fragment, which is not to be considered when determining if an\n * about URL is well-known.\n *\n * Using about:invalid seems preferable to using a fixed data URL, since\n * browsers might choose to not report CSP violations on it, as legitimate\n * CSS function calls to attr() can result in this URL being produced. It is\n * also a standard URL which matches exactly the semantics we need:\n * \"The about:invalid URI references a non-existent document with a generic\n * error condition. It can be used when a URI is necessary, but the default\n * value shouldn't be resolveable as any type of document\".\n *\n * @const {string}\n */\ngoog.html.SafeUrl.INNOCUOUS_STRING = 'about:invalid#zClosurez';\n\n\n/**\n * @override\n * @const\n */\ngoog.html.SafeUrl.prototype.implementsGoogStringTypedString = true;\n\n\n/**\n * Returns this SafeUrl's value as a string.\n *\n * IMPORTANT: In code where it is security relevant that an object's type is\n * indeed `SafeUrl`, use `goog.html.SafeUrl.unwrap` instead of this\n * method. If in doubt, assume that it's security relevant. In particular, note\n * that goog.html functions which return a goog.html type do not guarantee that\n * the returned instance is of the right type.\n *\n * IMPORTANT: The guarantees of the SafeUrl type contract only extend to the\n * behavior of browsers when interpreting URLs. Values of SafeUrl objects MUST\n * be appropriately escaped before embedding in a HTML document. Note that the\n * required escaping is context-sensitive (e.g. a different escaping is\n * required for embedding a URL in a style property within a style\n * attribute, as opposed to embedding in a href attribute).\n *\n * @see goog.html.SafeUrl#unwrap\n * @override\n */\ngoog.html.SafeUrl.prototype.getTypedStringValue = function() {\n  return this.privateDoNotAccessOrElseSafeUrlWrappedValue_.toString();\n};\n\n\n/**\n * @override\n * @const\n */\ngoog.html.SafeUrl.prototype.implementsGoogI18nBidiDirectionalString = true;\n\n\n/**\n * Returns this URLs directionality, which is always `LTR`.\n * @override\n */\ngoog.html.SafeUrl.prototype.getDirection = function() {\n  return goog.i18n.bidi.Dir.LTR;\n};\n\n\nif (goog.DEBUG) {\n  /**\n   * Returns a debug string-representation of this value.\n   *\n   * To obtain the actual string value wrapped in a SafeUrl, use\n   * `goog.html.SafeUrl.unwrap`.\n   *\n   * @see goog.html.SafeUrl#unwrap\n   * @override\n   */\n  goog.html.SafeUrl.prototype.toString = function() {\n    return 'SafeUrl{' + this.privateDoNotAccessOrElseSafeUrlWrappedValue_ + '}';\n  };\n}\n\n\n/**\n * Performs a runtime check that the provided object is indeed a SafeUrl\n * object, and returns its value.\n *\n * IMPORTANT: The guarantees of the SafeUrl type contract only extend to the\n * behavior of  browsers when interpreting URLs. Values of SafeUrl objects MUST\n * be appropriately escaped before embedding in a HTML document. Note that the\n * required escaping is context-sensitive (e.g. a different escaping is\n * required for embedding a URL in a style property within a style\n * attribute, as opposed to embedding in a href attribute).\n *\n * @param {!goog.html.SafeUrl} safeUrl The object to extract from.\n * @return {string} The SafeUrl object's contained string, unless the run-time\n *     type check fails. In that case, `unwrap` returns an innocuous\n *     string, or, if assertions are enabled, throws\n *     `goog.asserts.AssertionError`.\n */\ngoog.html.SafeUrl.unwrap = function(safeUrl) {\n  // Perform additional Run-time type-checking to ensure that safeUrl is indeed\n  // an instance of the expected type.  This provides some additional protection\n  // against security bugs due to application code that disables type checks.\n  // Specifically, the following checks are performed:\n  // 1. The object is an instance of the expected type.\n  // 2. The object is not an instance of a subclass.\n  if (safeUrl instanceof goog.html.SafeUrl &&\n      safeUrl.constructor === goog.html.SafeUrl) {\n    return safeUrl.privateDoNotAccessOrElseSafeUrlWrappedValue_;\n  } else {\n    goog.asserts.fail('expected object of type SafeUrl, got \\'' +\n        safeUrl + '\\' of type ' + goog.typeOf(safeUrl));\n    return 'type_error:SafeUrl';\n  }\n};\n\n\n/**\n * Creates a SafeUrl object from a compile-time constant string.\n *\n * Compile-time constant strings are inherently program-controlled and hence\n * trusted.\n *\n * @param {!goog.string.Const} url A compile-time-constant string from which to\n *         create a SafeUrl.\n * @return {!goog.html.SafeUrl} A SafeUrl object initialized to `url`.\n */\ngoog.html.SafeUrl.fromConstant = function(url) {\n  return goog.html.SafeUrl.createSafeUrlSecurityPrivateDoNotAccessOrElse(\n      goog.string.Const.unwrap(url));\n};\n\n\n/**\n * A pattern that matches Blob or data types that can have SafeUrls created\n * from URL.createObjectURL(blob) or via a data: URI.\n *\n * This has some parameter support (most notably, we haven't implemented the\n * more complex parts like %-encoded characters or non-alphanumerical ones for\n * simplicity's sake). The specs are fairly complex, and they don't\n * always match Chrome's behavior: we settled on a subset where we're confident\n * all parties involved agree.\n *\n * The spec is available at https://mimesniff.spec.whatwg.org/ (and see\n * https://tools.ietf.org/html/rfc2397 for data: urls, which override some of\n * it).\n * @const\n * @private\n */\ngoog.html.SAFE_MIME_TYPE_PATTERN_ = new RegExp(\n    // Note: Due to content-sniffing concerns, only add MIME types for\n    // media formats.\n    '^(?:audio/(?:3gpp2|3gpp|aac|L16|midi|mp3|mp4|mpeg|oga|ogg|opus|x-m4a|x-matroska|x-wav|wav|webm)|' +\n        'font/\\\\w+|' +\n        'image/(?:bmp|gif|jpeg|jpg|png|tiff|webp|x-icon)|' +\n        // TODO(user): Due to content-sniffing concerns, text/csv should\n        // be removed from the whitelist.\n        'text/csv|' +\n        'video/(?:mpeg|mp4|ogg|webm|quicktime|x-matroska))' +\n        '(?:;\\\\w+=(?:\\\\w+|\"[\\\\w;,= ]+\"))*$',  // MIME type parameters\n    'i');\n\n\n/**\n * @param {string} mimeType The MIME type to check if safe.\n * @return {boolean} True if the MIME type is safe and creating a Blob via\n *   `SafeUrl.fromBlob()` with that type will not fail due to the type. False\n *   otherwise.\n */\ngoog.html.SafeUrl.isSafeMimeType = function(mimeType) {\n  return goog.html.SAFE_MIME_TYPE_PATTERN_.test(mimeType);\n};\n\n\n/**\n * Creates a SafeUrl wrapping a blob URL for the given `blob`.\n *\n * The blob URL is created with `URL.createObjectURL`. If the MIME type\n * for `blob` is not of a known safe audio, image or video MIME type,\n * then the SafeUrl will wrap {@link #INNOCUOUS_STRING}.\n *\n * Note: Call {@link revokeObjectUrl} on the URL after it's used\n * to prevent memory leaks.\n *\n * @see http://www.w3.org/TR/FileAPI/#url\n * @param {!Blob} blob\n * @return {!goog.html.SafeUrl} The blob URL, or an innocuous string wrapped\n *   as a SafeUrl.\n */\ngoog.html.SafeUrl.fromBlob = function(blob) {\n  var url = goog.html.SafeUrl.isSafeMimeType(blob.type) ?\n      goog.fs.url.createObjectUrl(blob) :\n      goog.html.SafeUrl.INNOCUOUS_STRING;\n  return goog.html.SafeUrl.createSafeUrlSecurityPrivateDoNotAccessOrElse(url);\n};\n\n\n/**\n * Revokes an object URL created for a safe URL created {@link fromBlob()}.\n * @param {!goog.html.SafeUrl} safeUrl SafeUrl wrapping a blob object.\n */\ngoog.html.SafeUrl.revokeObjectUrl = function(safeUrl) {\n  var url = safeUrl.getTypedStringValue();\n  if (url !== goog.html.SafeUrl.INNOCUOUS_STRING) {\n    goog.fs.url.revokeObjectUrl(url);\n  }\n};\n\n\n/**\n * Creates a SafeUrl wrapping a blob URL created for a MediaSource.\n * @param {!MediaSource} mediaSource\n * @return {!goog.html.SafeUrl} The blob URL.\n */\ngoog.html.SafeUrl.fromMediaSource = function(mediaSource) {\n  goog.asserts.assert(\n      'MediaSource' in goog.global, 'No support for MediaSource');\n  const url = mediaSource instanceof MediaSource ?\n      goog.fs.url.createObjectUrl(mediaSource) :\n      goog.html.SafeUrl.INNOCUOUS_STRING;\n  return goog.html.SafeUrl.createSafeUrlSecurityPrivateDoNotAccessOrElse(url);\n};\n\n\n/**\n * Matches a base-64 data URL, with the first match group being the MIME type.\n * @const\n * @private\n */\ngoog.html.DATA_URL_PATTERN_ = /^data:(.*);base64,[a-z0-9+\\/]+=*$/i;\n\n\n/**\n * Attempts to create a SafeUrl wrapping a `data:` URL, after validating it\n * matches a known-safe media MIME type. If it doesn't match, return `null`.\n *\n * @param {string} dataUrl A valid base64 data URL with one of the whitelisted\n *     media MIME types.\n * @return {?goog.html.SafeUrl} A matching safe URL, or `null` if it does not\n *     pass.\n */\ngoog.html.SafeUrl.tryFromDataUrl = function(dataUrl) {\n  // For defensive purposes, in case users cast around the parameter type.\n  dataUrl = String(dataUrl);\n  // RFC4648 suggest to ignore CRLF in base64 encoding.\n  // See https://tools.ietf.org/html/rfc4648.\n  // Remove the CR (%0D) and LF (%0A) from the dataUrl.\n  var filteredDataUrl = dataUrl.replace(/(%0A|%0D)/g, '');\n  var match = filteredDataUrl.match(goog.html.DATA_URL_PATTERN_);\n  // Note: The only risk of XSS here is if the `data:` URL results in a\n  // same-origin document. In which case content-sniffing might cause the\n  // browser to interpret the contents as html.\n  // All modern browsers consider `data:` URL documents to have unique empty\n  // origins. Only Firefox for versions prior to v57 behaves differently:\n  // https://blog.mozilla.org/security/2017/10/04/treating-data-urls-unique-origins-firefox-57/\n  // Older versions of IE don't understand `data:` urls, so it is not an issue.\n  var valid = match && goog.html.SafeUrl.isSafeMimeType(match[1]);\n  if (valid) {\n    return goog.html.SafeUrl.createSafeUrlSecurityPrivateDoNotAccessOrElse(\n        filteredDataUrl);\n  }\n  return null;\n};\n\n\n/**\n * Creates a SafeUrl wrapping a `data:` URL, after validating it matches a\n * known-safe media MIME type. If it doesn't match, return\n * `goog.html.SafeUrl.INNOCUOUS_URL`.\n *\n * @param {string} dataUrl A valid base64 data URL with one of the whitelisted\n *     media MIME types.\n * @return {!goog.html.SafeUrl} A matching safe URL, or\n *     `goog.html.SafeUrl.INNOCUOUS_URL` if it does not pass.\n */\ngoog.html.SafeUrl.fromDataUrl = function(dataUrl) {\n  return goog.html.SafeUrl.tryFromDataUrl(dataUrl) ||\n      goog.html.SafeUrl.INNOCUOUS_URL;\n};\n\n\n/**\n * Creates a SafeUrl wrapping a tel: URL.\n *\n * @param {string} telUrl A tel URL.\n * @return {!goog.html.SafeUrl} A matching safe URL, or {@link INNOCUOUS_STRING}\n *     wrapped as a SafeUrl if it does not pass.\n */\ngoog.html.SafeUrl.fromTelUrl = function(telUrl) {\n  // There's a risk that a tel: URL could immediately place a call once\n  // clicked, without requiring user confirmation. For that reason it is\n  // handled in this separate function.\n  if (!goog.string.internal.caseInsensitiveStartsWith(telUrl, 'tel:')) {\n    telUrl = goog.html.SafeUrl.INNOCUOUS_STRING;\n  }\n  return goog.html.SafeUrl.createSafeUrlSecurityPrivateDoNotAccessOrElse(\n      telUrl);\n};\n\n\n/**\n * Matches a sip/sips URL. We only allow urls that consist of an email address.\n * The characters '?' and '#' are not allowed in the local part of the email\n * address.\n * @const\n * @private\n */\ngoog.html.SIP_URL_PATTERN_ = new RegExp(\n    '^sip[s]?:[+a-z0-9_.!$%&\\'*\\\\/=^`{|}~-]+@([a-z0-9-]+\\\\.)+[a-z0-9]{2,63}$',\n    'i');\n\n\n/**\n * Creates a SafeUrl wrapping a sip: URL. We only allow urls that consist of an\n * email address. The characters '?' and '#' are not allowed in the local part\n * of the email address.\n *\n * @param {string} sipUrl A sip URL.\n * @return {!goog.html.SafeUrl} A matching safe URL, or {@link INNOCUOUS_STRING}\n *     wrapped as a SafeUrl if it does not pass.\n */\ngoog.html.SafeUrl.fromSipUrl = function(sipUrl) {\n  if (!goog.html.SIP_URL_PATTERN_.test(decodeURIComponent(sipUrl))) {\n    sipUrl = goog.html.SafeUrl.INNOCUOUS_STRING;\n  }\n  return goog.html.SafeUrl.createSafeUrlSecurityPrivateDoNotAccessOrElse(\n      sipUrl);\n};\n\n\n/**\n * Creates a SafeUrl wrapping a fb-messenger://share URL.\n *\n * @param {string} facebookMessengerUrl A facebook messenger URL.\n * @return {!goog.html.SafeUrl} A matching safe URL, or {@link INNOCUOUS_STRING}\n *     wrapped as a SafeUrl if it does not pass.\n */\ngoog.html.SafeUrl.fromFacebookMessengerUrl = function(facebookMessengerUrl) {\n  if (!goog.string.internal.caseInsensitiveStartsWith(\n          facebookMessengerUrl, 'fb-messenger://share')) {\n    facebookMessengerUrl = goog.html.SafeUrl.INNOCUOUS_STRING;\n  }\n  return goog.html.SafeUrl.createSafeUrlSecurityPrivateDoNotAccessOrElse(\n      facebookMessengerUrl);\n};\n\n/**\n * Creates a SafeUrl wrapping a whatsapp://send URL.\n *\n * @param {string} whatsAppUrl A WhatsApp URL.\n * @return {!goog.html.SafeUrl} A matching safe URL, or {@link INNOCUOUS_STRING}\n *     wrapped as a SafeUrl if it does not pass.\n */\ngoog.html.SafeUrl.fromWhatsAppUrl = function(whatsAppUrl) {\n  if (!goog.string.internal.caseInsensitiveStartsWith(\n          whatsAppUrl, 'whatsapp://send')) {\n    whatsAppUrl = goog.html.SafeUrl.INNOCUOUS_STRING;\n  }\n  return goog.html.SafeUrl.createSafeUrlSecurityPrivateDoNotAccessOrElse(\n      whatsAppUrl);\n};\n\n/**\n * Creates a SafeUrl wrapping a sms: URL.\n *\n * @param {string} smsUrl A sms URL.\n * @return {!goog.html.SafeUrl} A matching safe URL, or {@link INNOCUOUS_STRING}\n *     wrapped as a SafeUrl if it does not pass.\n */\ngoog.html.SafeUrl.fromSmsUrl = function(smsUrl) {\n  if (!goog.string.internal.caseInsensitiveStartsWith(smsUrl, 'sms:') ||\n      !goog.html.SafeUrl.isSmsUrlBodyValid_(smsUrl)) {\n    smsUrl = goog.html.SafeUrl.INNOCUOUS_STRING;\n  }\n  return goog.html.SafeUrl.createSafeUrlSecurityPrivateDoNotAccessOrElse(\n      smsUrl);\n};\n\n\n/**\n * Validates SMS URL `body` parameter, which is optional and should appear at\n * most once and should be percent-encoded if present. Rejects many malformed\n * bodies, but may spuriously reject some URLs and does not reject all malformed\n * sms: URLs.\n *\n * @param {string} smsUrl A sms URL.\n * @return {boolean} Whether SMS URL has a valid `body` parameter if it exists.\n * @private\n */\ngoog.html.SafeUrl.isSmsUrlBodyValid_ = function(smsUrl) {\n  var hash = smsUrl.indexOf('#');\n  if (hash > 0) {\n    smsUrl = smsUrl.substring(0, hash);\n  }\n  var bodyParams = smsUrl.match(/[?&]body=/gi);\n  // \"body\" param is optional\n  if (!bodyParams) {\n    return true;\n  }\n  // \"body\" MUST only appear once\n  if (bodyParams.length > 1) {\n    return false;\n  }\n  // Get the encoded `body` parameter value.\n  var bodyValue = smsUrl.match(/[?&]body=([^&]*)/)[1];\n  if (!bodyValue) {\n    return true;\n  }\n  try {\n    decodeURIComponent(bodyValue);\n  } catch (error) {\n    return false;\n  }\n  return /^(?:[a-z0-9\\-_.~]|%[0-9a-f]{2})+$/i.test(bodyValue);\n};\n\n\n/**\n * Creates a SafeUrl wrapping a ssh: URL.\n *\n * @param {string} sshUrl A ssh URL.\n * @return {!goog.html.SafeUrl} A matching safe URL, or {@link INNOCUOUS_STRING}\n *     wrapped as a SafeUrl if it does not pass.\n */\ngoog.html.SafeUrl.fromSshUrl = function(sshUrl) {\n  if (!goog.string.internal.caseInsensitiveStartsWith(sshUrl, 'ssh://')) {\n    sshUrl = goog.html.SafeUrl.INNOCUOUS_STRING;\n  }\n  return goog.html.SafeUrl.createSafeUrlSecurityPrivateDoNotAccessOrElse(\n      sshUrl);\n};\n\n/**\n * Sanitizes a Chrome extension URL to SafeUrl, given a compile-time-constant\n * extension identifier. Can also be restricted to chrome extensions.\n *\n * @param {string} url The url to sanitize. Should start with the extension\n *     scheme and the extension identifier.\n * @param {!goog.string.Const|!Array<!goog.string.Const>} extensionId The\n *     extension id to accept, as a compile-time constant or an array of those.\n *\n * @return {!goog.html.SafeUrl} Either `url` if it's deemed safe, or\n *     `INNOCUOUS_STRING` if it's not.\n */\ngoog.html.SafeUrl.sanitizeChromeExtensionUrl = function(url, extensionId) {\n  return goog.html.SafeUrl.sanitizeExtensionUrl_(\n      /^chrome-extension:\\/\\/([^\\/]+)\\//, url, extensionId);\n};\n\n/**\n * Sanitizes a Firefox extension URL to SafeUrl, given a compile-time-constant\n * extension identifier. Can also be restricted to chrome extensions.\n *\n * @param {string} url The url to sanitize. Should start with the extension\n *     scheme and the extension identifier.\n * @param {!goog.string.Const|!Array<!goog.string.Const>} extensionId The\n *     extension id to accept, as a compile-time constant or an array of those.\n *\n * @return {!goog.html.SafeUrl} Either `url` if it's deemed safe, or\n *     `INNOCUOUS_STRING` if it's not.\n */\ngoog.html.SafeUrl.sanitizeFirefoxExtensionUrl = function(url, extensionId) {\n  return goog.html.SafeUrl.sanitizeExtensionUrl_(\n      /^moz-extension:\\/\\/([^\\/]+)\\//, url, extensionId);\n};\n\n/**\n * Sanitizes a Edge extension URL to SafeUrl, given a compile-time-constant\n * extension identifier. Can also be restricted to chrome extensions.\n *\n * @param {string} url The url to sanitize. Should start with the extension\n *     scheme and the extension identifier.\n * @param {!goog.string.Const|!Array<!goog.string.Const>} extensionId The\n *     extension id to accept, as a compile-time constant or an array of those.\n *\n * @return {!goog.html.SafeUrl} Either `url` if it's deemed safe, or\n *     `INNOCUOUS_STRING` if it's not.\n */\ngoog.html.SafeUrl.sanitizeEdgeExtensionUrl = function(url, extensionId) {\n  return goog.html.SafeUrl.sanitizeExtensionUrl_(\n      /^ms-browser-extension:\\/\\/([^\\/]+)\\//, url, extensionId);\n};\n\n/**\n * Private helper for converting extension URLs to SafeUrl, given the scheme for\n * that particular extension type. Use the sanitizeFirefoxExtensionUrl,\n * sanitizeChromeExtensionUrl or sanitizeEdgeExtensionUrl unless you're building\n * new helpers.\n *\n * @private\n * @param {!RegExp} scheme The scheme to accept as a RegExp extracting the\n *     extension identifier.\n * @param {string} url The url to sanitize. Should start with the extension\n *     scheme and the extension identifier.\n * @param {!goog.string.Const|!Array<!goog.string.Const>} extensionId The\n *     extension id to accept, as a compile-time constant or an array of those.\n *\n * @return {!goog.html.SafeUrl} Either `url` if it's deemed safe, or\n *     `INNOCUOUS_STRING` if it's not.\n */\ngoog.html.SafeUrl.sanitizeExtensionUrl_ = function(scheme, url, extensionId) {\n  var matches = scheme.exec(url);\n  if (!matches) {\n    url = goog.html.SafeUrl.INNOCUOUS_STRING;\n  } else {\n    var extractedExtensionId = matches[1];\n    var acceptedExtensionIds;\n    if (extensionId instanceof goog.string.Const) {\n      acceptedExtensionIds = [goog.string.Const.unwrap(extensionId)];\n    } else {\n      acceptedExtensionIds = extensionId.map(function unwrap(x) {\n        return goog.string.Const.unwrap(x);\n      });\n    }\n    if (acceptedExtensionIds.indexOf(extractedExtensionId) == -1) {\n      url = goog.html.SafeUrl.INNOCUOUS_STRING;\n    }\n  }\n  return goog.html.SafeUrl.createSafeUrlSecurityPrivateDoNotAccessOrElse(url);\n};\n\n\n/**\n * Creates a SafeUrl from TrustedResourceUrl. This is safe because\n * TrustedResourceUrl is more tightly restricted than SafeUrl.\n *\n * @param {!goog.html.TrustedResourceUrl} trustedResourceUrl\n * @return {!goog.html.SafeUrl}\n */\ngoog.html.SafeUrl.fromTrustedResourceUrl = function(trustedResourceUrl) {\n  return goog.html.SafeUrl.createSafeUrlSecurityPrivateDoNotAccessOrElse(\n      goog.html.TrustedResourceUrl.unwrap(trustedResourceUrl));\n};\n\n\n/**\n * A pattern that recognizes a commonly useful subset of URLs that satisfy\n * the SafeUrl contract.\n *\n * This regular expression matches a subset of URLs that will not cause script\n * execution if used in URL context within a HTML document. Specifically, this\n * regular expression matches if (comment from here on and regex copied from\n * Soy's EscapingConventions):\n * (1) Either a protocol in a whitelist (http, https, mailto or ftp).\n * (2) or no protocol.  A protocol must be followed by a colon. The below\n *     allows that by allowing colons only after one of the characters [/?#].\n *     A colon after a hash (#) must be in the fragment.\n *     Otherwise, a colon after a (?) must be in a query.\n *     Otherwise, a colon after a single solidus (/) must be in a path.\n *     Otherwise, a colon after a double solidus (//) must be in the authority\n *     (before port).\n *\n * @private\n * @const {!RegExp}\n */\ngoog.html.SAFE_URL_PATTERN_ =\n    /^(?:(?:https?|mailto|ftp):|[^:/?#]*(?:[/?#]|$))/i;\n\n/**\n * Public version of goog.html.SAFE_URL_PATTERN_. Updating\n * goog.html.SAFE_URL_PATTERN_ doesn't seem to be backward compatible.\n * Namespace is also changed to goog.html.SafeUrl so it can be imported using\n * goog.require('goog.dom.SafeUrl').\n *\n * TODO(bangert): Remove SAFE_URL_PATTERN_\n * @const {!RegExp}\n */\ngoog.html.SafeUrl.SAFE_URL_PATTERN = goog.html.SAFE_URL_PATTERN_;\n\n/**\n * Attempts to create a SafeUrl object from `url`. The input string is validated\n * to match a pattern of commonly used safe URLs. If validation fails, `null` is\n * returned.\n *\n * `url` may be a URL with the `http:`, `https:`, `mailto:`, `ftp:` or `data`\n * scheme, or a relative URL (i.e., a URL without a scheme; specifically, a\n * scheme-relative, absolute-path-relative, or path-relative URL).\n *\n * @see http://url.spec.whatwg.org/#concept-relative-url\n * @param {string|!goog.string.TypedString} url The URL to validate.\n * @return {?goog.html.SafeUrl} The validated URL, wrapped as a SafeUrl, or null\n *     if validation fails.\n */\ngoog.html.SafeUrl.trySanitize = function(url) {\n  if (url instanceof goog.html.SafeUrl) {\n    return url;\n  }\n  if (typeof url == 'object' && url.implementsGoogStringTypedString) {\n    url = /** @type {!goog.string.TypedString} */ (url).getTypedStringValue();\n  } else {\n    // For defensive purposes, in case users cast around the parameter type.\n    url = String(url);\n  }\n  if (!goog.html.SAFE_URL_PATTERN_.test(url)) {\n    return goog.html.SafeUrl.tryFromDataUrl(url);\n  }\n  return goog.html.SafeUrl.createSafeUrlSecurityPrivateDoNotAccessOrElse(url);\n};\n\n/**\n * Creates a SafeUrl object from `url`. If `url` is a\n * `goog.html.SafeUrl` then it is simply returned. Otherwise the input string is\n * validated to match a pattern of commonly used safe URLs. If validation fails,\n * `goog.html.SafeUrl.INNOCUOUS_URL` is returned.\n *\n * `url` may be a URL with the `http:`, `https:`, `mailto:`, `ftp:` or `data`\n * scheme, or a relative URL (i.e., a URL without a scheme; specifically, a\n * scheme-relative, absolute-path-relative, or path-relative URL).\n *\n * @see http://url.spec.whatwg.org/#concept-relative-url\n * @param {string|!goog.string.TypedString} url The URL to validate.\n * @return {!goog.html.SafeUrl} The validated URL, wrapped as a SafeUrl.\n */\ngoog.html.SafeUrl.sanitize = function(url) {\n  return goog.html.SafeUrl.trySanitize(url) || goog.html.SafeUrl.INNOCUOUS_URL;\n};\n\n/**\n * Creates a SafeUrl object from `url`. If `url` is a\n * `goog.html.SafeUrl` then it is simply returned. Otherwise the input string is\n * validated to match a pattern of commonly used safe URLs.\n *\n * `url` may be a URL with the http, https, mailto or ftp scheme,\n * or a relative URL (i.e., a URL without a scheme; specifically, a\n * scheme-relative, absolute-path-relative, or path-relative URL).\n *\n * This function asserts (using goog.asserts) that the URL matches this pattern.\n * If it does not, in addition to failing the assert, an innocuous URL will be\n * returned.\n *\n * @see http://url.spec.whatwg.org/#concept-relative-url\n * @param {string|!goog.string.TypedString} url The URL to validate.\n * @param {boolean=} opt_allowDataUrl Whether to allow valid data: URLs.\n * @return {!goog.html.SafeUrl} The validated URL, wrapped as a SafeUrl.\n */\ngoog.html.SafeUrl.sanitizeAssertUnchanged = function(url, opt_allowDataUrl) {\n  if (url instanceof goog.html.SafeUrl) {\n    return url;\n  } else if (typeof url == 'object' && url.implementsGoogStringTypedString) {\n    url = /** @type {!goog.string.TypedString} */ (url).getTypedStringValue();\n  } else {\n    url = String(url);\n  }\n  if (opt_allowDataUrl && /^data:/i.test(url)) {\n    var safeUrl = goog.html.SafeUrl.fromDataUrl(url);\n    if (safeUrl.getTypedStringValue() == url) {\n      return safeUrl;\n    }\n  }\n  if (!goog.asserts.assert(\n          goog.html.SAFE_URL_PATTERN_.test(url),\n          '%s does not match the safe URL pattern', url)) {\n    url = goog.html.SafeUrl.INNOCUOUS_STRING;\n  }\n  return goog.html.SafeUrl.createSafeUrlSecurityPrivateDoNotAccessOrElse(url);\n};\n\n/**\n * Token used to ensure that object is created only from this file. No code\n * outside of this file can access this token.\n * @private {!Object}\n * @const\n */\ngoog.html.SafeUrl.CONSTRUCTOR_TOKEN_PRIVATE_ = {};\n\n/**\n * Package-internal utility method to create SafeUrl instances.\n *\n * @param {string} url The string to initialize the SafeUrl object with.\n * @return {!goog.html.SafeUrl} The initialized SafeUrl object.\n * @package\n */\ngoog.html.SafeUrl.createSafeUrlSecurityPrivateDoNotAccessOrElse = function(\n    url) {\n  return new goog.html.SafeUrl(\n      url, goog.html.SafeUrl.CONSTRUCTOR_TOKEN_PRIVATE_);\n};\n\n\n/**\n * `INNOCUOUS_STRING` wrapped in a `SafeUrl`.\n * @const {!goog.html.SafeUrl}\n */\ngoog.html.SafeUrl.INNOCUOUS_URL =\n    goog.html.SafeUrl.createSafeUrlSecurityPrivateDoNotAccessOrElse(\n        goog.html.SafeUrl.INNOCUOUS_STRING);\n\n\n/**\n * A SafeUrl corresponding to the special about:blank url.\n * @const {!goog.html.SafeUrl}\n */\ngoog.html.SafeUrl.ABOUT_BLANK =\n    goog.html.SafeUrl.createSafeUrlSecurityPrivateDoNotAccessOrElse(\n        'about:blank');\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n\n/**\n * @fileoverview The SafeHtml type and its builders.\n *\n * TODO(xtof): Link to document stating type contract.\n */\n\ngoog.provide('goog.html.SafeHtml');\n\ngoog.require('goog.array');\ngoog.require('goog.asserts');\ngoog.require('goog.dom.TagName');\ngoog.require('goog.dom.tags');\ngoog.require('goog.html.SafeScript');\ngoog.require('goog.html.SafeStyle');\ngoog.require('goog.html.SafeStyleSheet');\ngoog.require('goog.html.SafeUrl');\ngoog.require('goog.html.TrustedResourceUrl');\ngoog.require('goog.html.trustedtypes');\ngoog.require('goog.i18n.bidi.Dir');\ngoog.require('goog.i18n.bidi.DirectionalString');\ngoog.require('goog.labs.userAgent.browser');\ngoog.require('goog.object');\ngoog.require('goog.string.Const');\ngoog.require('goog.string.TypedString');\ngoog.require('goog.string.internal');\n\n\n\n/**\n * A string that is safe to use in HTML context in DOM APIs and HTML documents.\n *\n * A SafeHtml is a string-like object that carries the security type contract\n * that its value as a string will not cause untrusted script execution when\n * evaluated as HTML in a browser.\n *\n * Values of this type are guaranteed to be safe to use in HTML contexts,\n * such as, assignment to the innerHTML DOM property, or interpolation into\n * a HTML template in HTML PC_DATA context, in the sense that the use will not\n * result in a Cross-Site-Scripting vulnerability.\n *\n * Instances of this type must be created via the factory methods\n * (`goog.html.SafeHtml.create`, `goog.html.SafeHtml.htmlEscape`),\n * etc and not by invoking its constructor. The constructor intentionally takes\n * an extra parameter that cannot be constructed outside of this file and the\n * type is immutable; hence only a default instance corresponding to the empty\n * string can be obtained via constructor invocation.\n *\n * Creating SafeHtml objects HAS SIDE-EFFECTS due to calling Trusted Types Web\n * API.\n *\n * Note that there is no `goog.html.SafeHtml.fromConstant`. The reason is that\n * the following code would create an unsafe HTML:\n *\n * ```\n * goog.html.SafeHtml.concat(\n *     goog.html.SafeHtml.fromConstant(goog.string.Const.from('<script>')),\n *     goog.html.SafeHtml.htmlEscape(userInput),\n *     goog.html.SafeHtml.fromConstant(goog.string.Const.from('<\\/script>')));\n * ```\n *\n * There's `goog.dom.constHtmlToNode` to create a node from constant strings\n * only.\n *\n * @see goog.html.SafeHtml.create\n * @see goog.html.SafeHtml.htmlEscape\n * @final\n * @struct\n * @implements {goog.i18n.bidi.DirectionalString}\n * @implements {goog.string.TypedString}\n */\ngoog.html.SafeHtml = class {\n  /**\n   * @param {!TrustedHTML|string} value\n   * @param {?goog.i18n.bidi.Dir} dir\n   * @param {!Object} token package-internal implementation detail.\n   */\n  constructor(value, dir, token) {\n    /**\n     * The contained value of this SafeHtml.  The field has a purposely ugly\n     * name to make (non-compiled) code that attempts to directly access this\n     * field stand out.\n     * @private {!TrustedHTML|string}\n     */\n    this.privateDoNotAccessOrElseSafeHtmlWrappedValue_ =\n        (token === goog.html.SafeHtml.CONSTRUCTOR_TOKEN_PRIVATE_) ? value : '';\n\n    /**\n     * This SafeHtml's directionality, or null if unknown.\n     * @private {?goog.i18n.bidi.Dir}\n     */\n    this.dir_ = dir;\n  }\n};\n\n\n/**\n * @define {boolean} Whether to strip out error messages or to leave them in.\n */\ngoog.html.SafeHtml.ENABLE_ERROR_MESSAGES =\n    goog.define('goog.html.SafeHtml.ENABLE_ERROR_MESSAGES', goog.DEBUG);\n\n\n/**\n * Whether the `style` attribute is supported. Set to false to avoid the byte\n * weight of `goog.html.SafeStyle` where unneeded. An error will be thrown if\n * the `style` attribute is used.\n * @define {boolean}\n */\ngoog.html.SafeHtml.SUPPORT_STYLE_ATTRIBUTE =\n    goog.define('goog.html.SafeHtml.SUPPORT_STYLE_ATTRIBUTE', true);\n\n\n/**\n * @override\n * @const\n */\ngoog.html.SafeHtml.prototype.implementsGoogI18nBidiDirectionalString = true;\n\n\n/** @override */\ngoog.html.SafeHtml.prototype.getDirection = function() {\n  return this.dir_;\n};\n\n\n/**\n * @override\n * @const\n */\ngoog.html.SafeHtml.prototype.implementsGoogStringTypedString = true;\n\n\n/**\n * Returns this SafeHtml's value as string.\n *\n * IMPORTANT: In code where it is security relevant that an object's type is\n * indeed `SafeHtml`, use `goog.html.SafeHtml.unwrap` instead of\n * this method. If in doubt, assume that it's security relevant. In particular,\n * note that goog.html functions which return a goog.html type do not guarantee\n * that the returned instance is of the right type. For example:\n *\n * <pre>\n * var fakeSafeHtml = new String('fake');\n * fakeSafeHtml.__proto__ = goog.html.SafeHtml.prototype;\n * var newSafeHtml = goog.html.SafeHtml.htmlEscape(fakeSafeHtml);\n * // newSafeHtml is just an alias for fakeSafeHtml, it's passed through by\n * // goog.html.SafeHtml.htmlEscape() as fakeSafeHtml\n * // instanceof goog.html.SafeHtml.\n * </pre>\n *\n * @see goog.html.SafeHtml.unwrap\n * @override\n */\ngoog.html.SafeHtml.prototype.getTypedStringValue = function() {\n  return this.privateDoNotAccessOrElseSafeHtmlWrappedValue_.toString();\n};\n\n\nif (goog.DEBUG) {\n  /**\n   * Returns a debug string-representation of this value.\n   *\n   * To obtain the actual string value wrapped in a SafeHtml, use\n   * `goog.html.SafeHtml.unwrap`.\n   *\n   * @see goog.html.SafeHtml.unwrap\n   * @override\n   */\n  goog.html.SafeHtml.prototype.toString = function() {\n    return 'SafeHtml{' + this.privateDoNotAccessOrElseSafeHtmlWrappedValue_ +\n        '}';\n  };\n}\n\n\n/**\n * Performs a runtime check that the provided object is indeed a SafeHtml\n * object, and returns its value.\n * @param {!goog.html.SafeHtml} safeHtml The object to extract from.\n * @return {string} The SafeHtml object's contained string, unless the run-time\n *     type check fails. In that case, `unwrap` returns an innocuous\n *     string, or, if assertions are enabled, throws\n *     `goog.asserts.AssertionError`.\n */\ngoog.html.SafeHtml.unwrap = function(safeHtml) {\n  return goog.html.SafeHtml.unwrapTrustedHTML(safeHtml).toString();\n};\n\n\n/**\n * Unwraps value as TrustedHTML if supported or as a string if not.\n * @param {!goog.html.SafeHtml} safeHtml\n * @return {!TrustedHTML|string}\n * @see goog.html.SafeHtml.unwrap\n */\ngoog.html.SafeHtml.unwrapTrustedHTML = function(safeHtml) {\n  // Perform additional run-time type-checking to ensure that safeHtml is indeed\n  // an instance of the expected type.  This provides some additional protection\n  // against security bugs due to application code that disables type checks.\n  // Specifically, the following checks are performed:\n  // 1. The object is an instance of the expected type.\n  // 2. The object is not an instance of a subclass.\n  if (safeHtml instanceof goog.html.SafeHtml &&\n      safeHtml.constructor === goog.html.SafeHtml) {\n    return safeHtml.privateDoNotAccessOrElseSafeHtmlWrappedValue_;\n  } else {\n    goog.asserts.fail(\n        'expected object of type SafeHtml, got \\'' + safeHtml + '\\' of type ' +\n        goog.typeOf(safeHtml));\n    return 'type_error:SafeHtml';\n  }\n};\n\n\n/**\n * Shorthand for union of types that can sensibly be converted to strings\n * or might already be SafeHtml (as SafeHtml is a goog.string.TypedString).\n * @private\n * @typedef {string|number|boolean|!goog.string.TypedString|\n *           !goog.i18n.bidi.DirectionalString}\n */\ngoog.html.SafeHtml.TextOrHtml_;\n\n\n/**\n * Returns HTML-escaped text as a SafeHtml object.\n *\n * If text is of a type that implements\n * `goog.i18n.bidi.DirectionalString`, the directionality of the new\n * `SafeHtml` object is set to `text`'s directionality, if known.\n * Otherwise, the directionality of the resulting SafeHtml is unknown (i.e.,\n * `null`).\n *\n * @param {!goog.html.SafeHtml.TextOrHtml_} textOrHtml The text to escape. If\n *     the parameter is of type SafeHtml it is returned directly (no escaping\n *     is done).\n * @return {!goog.html.SafeHtml} The escaped text, wrapped as a SafeHtml.\n */\ngoog.html.SafeHtml.htmlEscape = function(textOrHtml) {\n  if (textOrHtml instanceof goog.html.SafeHtml) {\n    return textOrHtml;\n  }\n  var textIsObject = typeof textOrHtml == 'object';\n  var dir = null;\n  if (textIsObject && textOrHtml.implementsGoogI18nBidiDirectionalString) {\n    dir = /** @type {!goog.i18n.bidi.DirectionalString} */ (textOrHtml)\n              .getDirection();\n  }\n  var textAsString;\n  if (textIsObject && textOrHtml.implementsGoogStringTypedString) {\n    textAsString = /** @type {!goog.string.TypedString} */ (textOrHtml)\n                       .getTypedStringValue();\n  } else {\n    textAsString = String(textOrHtml);\n  }\n  return goog.html.SafeHtml.createSafeHtmlSecurityPrivateDoNotAccessOrElse(\n      goog.string.internal.htmlEscape(textAsString), dir);\n};\n\n\n/**\n * Returns HTML-escaped text as a SafeHtml object, with newlines changed to\n * &lt;br&gt;.\n * @param {!goog.html.SafeHtml.TextOrHtml_} textOrHtml The text to escape. If\n *     the parameter is of type SafeHtml it is returned directly (no escaping\n *     is done).\n * @return {!goog.html.SafeHtml} The escaped text, wrapped as a SafeHtml.\n */\ngoog.html.SafeHtml.htmlEscapePreservingNewlines = function(textOrHtml) {\n  if (textOrHtml instanceof goog.html.SafeHtml) {\n    return textOrHtml;\n  }\n  var html = goog.html.SafeHtml.htmlEscape(textOrHtml);\n  return goog.html.SafeHtml.createSafeHtmlSecurityPrivateDoNotAccessOrElse(\n      goog.string.internal.newLineToBr(goog.html.SafeHtml.unwrap(html)),\n      html.getDirection());\n};\n\n\n/**\n * Returns HTML-escaped text as a SafeHtml object, with newlines changed to\n * &lt;br&gt; and escaping whitespace to preserve spatial formatting. Character\n * entity #160 is used to make it safer for XML.\n * @param {!goog.html.SafeHtml.TextOrHtml_} textOrHtml The text to escape. If\n *     the parameter is of type SafeHtml it is returned directly (no escaping\n *     is done).\n * @return {!goog.html.SafeHtml} The escaped text, wrapped as a SafeHtml.\n */\ngoog.html.SafeHtml.htmlEscapePreservingNewlinesAndSpaces = function(\n    textOrHtml) {\n  if (textOrHtml instanceof goog.html.SafeHtml) {\n    return textOrHtml;\n  }\n  var html = goog.html.SafeHtml.htmlEscape(textOrHtml);\n  return goog.html.SafeHtml.createSafeHtmlSecurityPrivateDoNotAccessOrElse(\n      goog.string.internal.whitespaceEscape(goog.html.SafeHtml.unwrap(html)),\n      html.getDirection());\n};\n\n\n/**\n * Coerces an arbitrary object into a SafeHtml object.\n *\n * If `textOrHtml` is already of type `goog.html.SafeHtml`, the same\n * object is returned. Otherwise, `textOrHtml` is coerced to string, and\n * HTML-escaped. If `textOrHtml` is of a type that implements\n * `goog.i18n.bidi.DirectionalString`, its directionality, if known, is\n * preserved.\n *\n * @param {!goog.html.SafeHtml.TextOrHtml_} textOrHtml The text or SafeHtml to\n *     coerce.\n * @return {!goog.html.SafeHtml} The resulting SafeHtml object.\n * @deprecated Use goog.html.SafeHtml.htmlEscape.\n */\ngoog.html.SafeHtml.from = goog.html.SafeHtml.htmlEscape;\n\n\n/**\n * Converts an arbitrary string into an HTML comment by HTML-escaping the\n * contents and embedding the result between HTML comment markers.\n *\n * Escaping is needed because Internet Explorer supports conditional comments\n * and so may render HTML markup within comments.\n *\n * @param {string} text\n * @return {!goog.html.SafeHtml}\n */\ngoog.html.SafeHtml.comment = function(text) {\n  return goog.html.SafeHtml.createSafeHtmlSecurityPrivateDoNotAccessOrElse(\n      '<!--' + goog.string.internal.htmlEscape(text) + '-->', null);\n};\n\n\n/**\n * @const\n * @private\n */\ngoog.html.SafeHtml.VALID_NAMES_IN_TAG_ = /^[a-zA-Z0-9-]+$/;\n\n\n/**\n * Set of attributes containing URL as defined at\n * http://www.w3.org/TR/html5/index.html#attributes-1.\n * @private @const {!Object<string,boolean>}\n */\ngoog.html.SafeHtml.URL_ATTRIBUTES_ = goog.object.createSet(\n    'action', 'cite', 'data', 'formaction', 'href', 'manifest', 'poster',\n    'src');\n\n\n/**\n * Tags which are unsupported via create(). They might be supported via a\n * tag-specific create method. These are tags which might require a\n * TrustedResourceUrl in one of their attributes or a restricted type for\n * their content.\n * @private @const {!Object<string,boolean>}\n */\ngoog.html.SafeHtml.NOT_ALLOWED_TAG_NAMES_ = goog.object.createSet(\n    goog.dom.TagName.APPLET, goog.dom.TagName.BASE, goog.dom.TagName.EMBED,\n    goog.dom.TagName.IFRAME, goog.dom.TagName.LINK, goog.dom.TagName.MATH,\n    goog.dom.TagName.META, goog.dom.TagName.OBJECT, goog.dom.TagName.SCRIPT,\n    goog.dom.TagName.STYLE, goog.dom.TagName.SVG, goog.dom.TagName.TEMPLATE);\n\n\n/**\n * @typedef {string|number|!goog.string.TypedString|\n *     !goog.html.SafeStyle.PropertyMap|undefined|null}\n */\ngoog.html.SafeHtml.AttributeValue;\n\n\n/**\n * Creates a SafeHtml content consisting of a tag with optional attributes and\n * optional content.\n *\n * For convenience tag names and attribute names are accepted as regular\n * strings, instead of goog.string.Const. Nevertheless, you should not pass\n * user-controlled values to these parameters. Note that these parameters are\n * syntactically validated at runtime, and invalid values will result in\n * an exception.\n *\n * Example usage:\n *\n * goog.html.SafeHtml.create('br');\n * goog.html.SafeHtml.create('div', {'class': 'a'});\n * goog.html.SafeHtml.create('p', {}, 'a');\n * goog.html.SafeHtml.create('p', {}, goog.html.SafeHtml.create('br'));\n *\n * goog.html.SafeHtml.create('span', {\n *   'style': {'margin': '0'}\n * });\n *\n * To guarantee SafeHtml's type contract is upheld there are restrictions on\n * attribute values and tag names.\n *\n * - For attributes which contain script code (on*), a goog.string.Const is\n *   required.\n * - For attributes which contain style (style), a goog.html.SafeStyle or a\n *   goog.html.SafeStyle.PropertyMap is required.\n * - For attributes which are interpreted as URLs (e.g. src, href) a\n *   goog.html.SafeUrl, goog.string.Const or string is required. If a string\n *   is passed, it will be sanitized with SafeUrl.sanitize().\n * - For tags which can load code or set security relevant page metadata,\n *   more specific goog.html.SafeHtml.create*() functions must be used. Tags\n *   which are not supported by this function are applet, base, embed, iframe,\n *   link, math, object, script, style, svg, and template.\n *\n * @param {!goog.dom.TagName|string} tagName The name of the tag. Only tag names\n *     consisting of [a-zA-Z0-9-] are allowed. Tag names documented above are\n *     disallowed.\n * @param {?Object<string, ?goog.html.SafeHtml.AttributeValue>=} opt_attributes\n *     Mapping from attribute names to their values. Only attribute names\n *     consisting of [a-zA-Z0-9-] are allowed. Value of null or undefined causes\n *     the attribute to be omitted.\n * @param {!goog.html.SafeHtml.TextOrHtml_|\n *     !Array<!goog.html.SafeHtml.TextOrHtml_>=} opt_content Content to\n *     HTML-escape and put inside the tag. This must be empty for void tags\n *     like <br>. Array elements are concatenated.\n * @return {!goog.html.SafeHtml} The SafeHtml content with the tag.\n * @throws {!Error} If invalid tag name, attribute name, or attribute value is\n *     provided.\n * @throws {!goog.asserts.AssertionError} If content for void tag is provided.\n */\ngoog.html.SafeHtml.create = function(tagName, opt_attributes, opt_content) {\n  goog.html.SafeHtml.verifyTagName(String(tagName));\n  return goog.html.SafeHtml.createSafeHtmlTagSecurityPrivateDoNotAccessOrElse(\n      String(tagName), opt_attributes, opt_content);\n};\n\n\n/**\n * Verifies if the tag name is valid and if it doesn't change the context.\n * E.g. STRONG is fine but SCRIPT throws because it changes context. See\n * goog.html.SafeHtml.create for an explanation of allowed tags.\n * @param {string} tagName\n * @throws {!Error} If invalid tag name is provided.\n * @package\n */\ngoog.html.SafeHtml.verifyTagName = function(tagName) {\n  if (!goog.html.SafeHtml.VALID_NAMES_IN_TAG_.test(tagName)) {\n    throw new Error(\n        goog.html.SafeHtml.ENABLE_ERROR_MESSAGES ?\n            'Invalid tag name <' + tagName + '>.' :\n            '');\n  }\n  if (tagName.toUpperCase() in goog.html.SafeHtml.NOT_ALLOWED_TAG_NAMES_) {\n    throw new Error(\n        goog.html.SafeHtml.ENABLE_ERROR_MESSAGES ?\n\n            'Tag name <' + tagName + '> is not allowed for SafeHtml.' :\n            '');\n  }\n};\n\n\n/**\n * Creates a SafeHtml representing an iframe tag.\n *\n * This by default restricts the iframe as much as possible by setting the\n * sandbox attribute to the empty string. If the iframe requires less\n * restrictions, set the sandbox attribute as tight as possible, but do not rely\n * on the sandbox as a security feature because it is not supported by older\n * browsers. If a sandbox is essential to security (e.g. for third-party\n * frames), use createSandboxIframe which checks for browser support.\n *\n * @see https://developer.mozilla.org/en/docs/Web/HTML/Element/iframe#attr-sandbox\n *\n * @param {?goog.html.TrustedResourceUrl=} opt_src The value of the src\n *     attribute. If null or undefined src will not be set.\n * @param {?goog.html.SafeHtml=} opt_srcdoc The value of the srcdoc attribute.\n *     If null or undefined srcdoc will not be set.\n * @param {?Object<string, ?goog.html.SafeHtml.AttributeValue>=} opt_attributes\n *     Mapping from attribute names to their values. Only attribute names\n *     consisting of [a-zA-Z0-9-] are allowed. Value of null or undefined causes\n *     the attribute to be omitted.\n * @param {!goog.html.SafeHtml.TextOrHtml_|\n *     !Array<!goog.html.SafeHtml.TextOrHtml_>=} opt_content Content to\n *     HTML-escape and put inside the tag. Array elements are concatenated.\n * @return {!goog.html.SafeHtml} The SafeHtml content with the tag.\n * @throws {!Error} If invalid tag name, attribute name, or attribute value is\n *     provided. If opt_attributes contains the src or srcdoc attributes.\n */\ngoog.html.SafeHtml.createIframe = function(\n    opt_src, opt_srcdoc, opt_attributes, opt_content) {\n  if (opt_src) {\n    // Check whether this is really TrustedResourceUrl.\n    goog.html.TrustedResourceUrl.unwrap(opt_src);\n  }\n\n  var fixedAttributes = {};\n  fixedAttributes['src'] = opt_src || null;\n  fixedAttributes['srcdoc'] =\n      opt_srcdoc && goog.html.SafeHtml.unwrap(opt_srcdoc);\n  var defaultAttributes = {'sandbox': ''};\n  var attributes = goog.html.SafeHtml.combineAttributes(\n      fixedAttributes, defaultAttributes, opt_attributes);\n  return goog.html.SafeHtml.createSafeHtmlTagSecurityPrivateDoNotAccessOrElse(\n      'iframe', attributes, opt_content);\n};\n\n\n/**\n * Creates a SafeHtml representing a sandboxed iframe tag.\n *\n * The sandbox attribute is enforced in its most restrictive mode, an empty\n * string. Consequently, the security requirements for the src and srcdoc\n * attributes are relaxed compared to SafeHtml.createIframe. This function\n * will throw on browsers that do not support the sandbox attribute, as\n * determined by SafeHtml.canUseSandboxIframe.\n *\n * The SafeHtml returned by this function can trigger downloads with no\n * user interaction on Chrome (though only a few, further attempts are blocked).\n * Firefox and IE will block all downloads from the sandbox.\n *\n * @see https://developer.mozilla.org/en/docs/Web/HTML/Element/iframe#attr-sandbox\n * @see https://lists.w3.org/Archives/Public/public-whatwg-archive/2013Feb/0112.html\n *\n * @param {string|!goog.html.SafeUrl=} opt_src The value of the src\n *     attribute. If null or undefined src will not be set.\n * @param {string=} opt_srcdoc The value of the srcdoc attribute.\n *     If null or undefined srcdoc will not be set. Will not be sanitized.\n * @param {!Object<string, ?goog.html.SafeHtml.AttributeValue>=} opt_attributes\n *     Mapping from attribute names to their values. Only attribute names\n *     consisting of [a-zA-Z0-9-] are allowed. Value of null or undefined causes\n *     the attribute to be omitted.\n * @param {!goog.html.SafeHtml.TextOrHtml_|\n *     !Array<!goog.html.SafeHtml.TextOrHtml_>=} opt_content Content to\n *     HTML-escape and put inside the tag. Array elements are concatenated.\n * @return {!goog.html.SafeHtml} The SafeHtml content with the tag.\n * @throws {!Error} If invalid tag name, attribute name, or attribute value is\n *     provided. If opt_attributes contains the src, srcdoc or sandbox\n *     attributes. If browser does not support the sandbox attribute on iframe.\n */\ngoog.html.SafeHtml.createSandboxIframe = function(\n    opt_src, opt_srcdoc, opt_attributes, opt_content) {\n  if (!goog.html.SafeHtml.canUseSandboxIframe()) {\n    throw new Error(\n        goog.html.SafeHtml.ENABLE_ERROR_MESSAGES ?\n            'The browser does not support sandboxed iframes.' :\n            '');\n  }\n\n  var fixedAttributes = {};\n  if (opt_src) {\n    // Note that sanitize is a no-op on SafeUrl.\n    fixedAttributes['src'] =\n        goog.html.SafeUrl.unwrap(goog.html.SafeUrl.sanitize(opt_src));\n  } else {\n    fixedAttributes['src'] = null;\n  }\n  fixedAttributes['srcdoc'] = opt_srcdoc || null;\n  fixedAttributes['sandbox'] = '';\n  var attributes =\n      goog.html.SafeHtml.combineAttributes(fixedAttributes, {}, opt_attributes);\n  return goog.html.SafeHtml.createSafeHtmlTagSecurityPrivateDoNotAccessOrElse(\n      'iframe', attributes, opt_content);\n};\n\n\n/**\n * Checks if the user agent supports sandboxed iframes.\n * @return {boolean}\n */\ngoog.html.SafeHtml.canUseSandboxIframe = function() {\n  return goog.global['HTMLIFrameElement'] &&\n      ('sandbox' in goog.global['HTMLIFrameElement'].prototype);\n};\n\n\n/**\n * Creates a SafeHtml representing a script tag with the src attribute.\n * @param {!goog.html.TrustedResourceUrl} src The value of the src\n * attribute.\n * @param {?Object<string, ?goog.html.SafeHtml.AttributeValue>=}\n * opt_attributes\n *     Mapping from attribute names to their values. Only attribute names\n *     consisting of [a-zA-Z0-9-] are allowed. Value of null or undefined\n *     causes the attribute to be omitted.\n * @return {!goog.html.SafeHtml} The SafeHtml content with the tag.\n * @throws {!Error} If invalid attribute name or value is provided. If\n *     opt_attributes contains the src attribute.\n */\ngoog.html.SafeHtml.createScriptSrc = function(src, opt_attributes) {\n  // TODO(mlourenco): The charset attribute should probably be blocked. If\n  // its value is attacker controlled, the script contains attacker controlled\n  // sub-strings (even if properly escaped) and the server does not set charset\n  // then XSS is likely possible.\n  // https://html.spec.whatwg.org/multipage/scripting.html#dom-script-charset\n\n  // Check whether this is really TrustedResourceUrl.\n  goog.html.TrustedResourceUrl.unwrap(src);\n\n  var fixedAttributes = {'src': src};\n  var defaultAttributes = {};\n  var attributes = goog.html.SafeHtml.combineAttributes(\n      fixedAttributes, defaultAttributes, opt_attributes);\n  return goog.html.SafeHtml.createSafeHtmlTagSecurityPrivateDoNotAccessOrElse(\n      'script', attributes);\n};\n\n\n/**\n * Creates a SafeHtml representing a script tag. Does not allow the language,\n * src, text or type attributes to be set.\n * @param {!goog.html.SafeScript|!Array<!goog.html.SafeScript>}\n *     script Content to put inside the tag. Array elements are\n *     concatenated.\n * @param {?Object<string, ?goog.html.SafeHtml.AttributeValue>=} opt_attributes\n *     Mapping from attribute names to their values. Only attribute names\n *     consisting of [a-zA-Z0-9-] are allowed. Value of null or undefined causes\n *     the attribute to be omitted.\n * @return {!goog.html.SafeHtml} The SafeHtml content with the tag.\n * @throws {!Error} If invalid attribute name or attribute value is provided. If\n *     opt_attributes contains the language, src, text or type attribute.\n */\ngoog.html.SafeHtml.createScript = function(script, opt_attributes) {\n  for (var attr in opt_attributes) {\n    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty#Using_hasOwnProperty_as_a_property_name\n    if (Object.prototype.hasOwnProperty.call(opt_attributes, attr)) {\n      var attrLower = attr.toLowerCase();\n      if (attrLower == 'language' || attrLower == 'src' ||\n          attrLower == 'text' || attrLower == 'type') {\n        throw new Error(\n            goog.html.SafeHtml.ENABLE_ERROR_MESSAGES ?\n                'Cannot set \"' + attrLower + '\" attribute' :\n                '');\n      }\n    }\n  }\n\n  var content = '';\n  script = goog.array.concat(script);\n  for (var i = 0; i < script.length; i++) {\n    content += goog.html.SafeScript.unwrap(script[i]);\n  }\n  // Convert to SafeHtml so that it's not HTML-escaped. This is safe because\n  // as part of its contract, SafeScript should have no dangerous '<'.\n  var htmlContent =\n      goog.html.SafeHtml.createSafeHtmlSecurityPrivateDoNotAccessOrElse(\n          content, goog.i18n.bidi.Dir.NEUTRAL);\n  return goog.html.SafeHtml.createSafeHtmlTagSecurityPrivateDoNotAccessOrElse(\n      'script', opt_attributes, htmlContent);\n};\n\n\n/**\n * Creates a SafeHtml representing a style tag. The type attribute is set\n * to \"text/css\".\n * @param {!goog.html.SafeStyleSheet|!Array<!goog.html.SafeStyleSheet>}\n *     styleSheet Content to put inside the tag. Array elements are\n *     concatenated.\n * @param {?Object<string, ?goog.html.SafeHtml.AttributeValue>=} opt_attributes\n *     Mapping from attribute names to their values. Only attribute names\n *     consisting of [a-zA-Z0-9-] are allowed. Value of null or undefined causes\n *     the attribute to be omitted.\n * @return {!goog.html.SafeHtml} The SafeHtml content with the tag.\n * @throws {!Error} If invalid attribute name or attribute value is provided. If\n *     opt_attributes contains the type attribute.\n */\ngoog.html.SafeHtml.createStyle = function(styleSheet, opt_attributes) {\n  var fixedAttributes = {'type': 'text/css'};\n  var defaultAttributes = {};\n  var attributes = goog.html.SafeHtml.combineAttributes(\n      fixedAttributes, defaultAttributes, opt_attributes);\n\n  var content = '';\n  styleSheet = goog.array.concat(styleSheet);\n  for (var i = 0; i < styleSheet.length; i++) {\n    content += goog.html.SafeStyleSheet.unwrap(styleSheet[i]);\n  }\n  // Convert to SafeHtml so that it's not HTML-escaped. This is safe because\n  // as part of its contract, SafeStyleSheet should have no dangerous '<'.\n  var htmlContent =\n      goog.html.SafeHtml.createSafeHtmlSecurityPrivateDoNotAccessOrElse(\n          content, goog.i18n.bidi.Dir.NEUTRAL);\n  return goog.html.SafeHtml.createSafeHtmlTagSecurityPrivateDoNotAccessOrElse(\n      'style', attributes, htmlContent);\n};\n\n\n/**\n * Creates a SafeHtml representing a meta refresh tag.\n * @param {!goog.html.SafeUrl|string} url Where to redirect. If a string is\n *     passed, it will be sanitized with SafeUrl.sanitize().\n * @param {number=} opt_secs Number of seconds until the page should be\n *     reloaded. Will be set to 0 if unspecified.\n * @return {!goog.html.SafeHtml} The SafeHtml content with the tag.\n */\ngoog.html.SafeHtml.createMetaRefresh = function(url, opt_secs) {\n  // Note that sanitize is a no-op on SafeUrl.\n  var unwrappedUrl = goog.html.SafeUrl.unwrap(goog.html.SafeUrl.sanitize(url));\n\n  if (goog.labs.userAgent.browser.isIE() ||\n      goog.labs.userAgent.browser.isEdge()) {\n    // IE/EDGE can't parse the content attribute if the url contains a\n    // semicolon. We can fix this by adding quotes around the url, but then we\n    // can't parse quotes in the URL correctly. Also, it seems that IE/EDGE\n    // did not unescape semicolons in these URLs at some point in the past. We\n    // take a best-effort approach.\n    //\n    // If the URL has semicolons (which may happen in some cases, see\n    // http://www.w3.org/TR/1999/REC-html401-19991224/appendix/notes.html#h-B.2\n    // for instance), wrap it in single quotes to protect the semicolons.\n    // If the URL has semicolons and single quotes, url-encode the single quotes\n    // as well.\n    //\n    // This is imperfect. Notice that both ' and ; are reserved characters in\n    // URIs, so this could do the wrong thing, but at least it will do the wrong\n    // thing in only rare cases.\n    if (goog.string.internal.contains(unwrappedUrl, ';')) {\n      unwrappedUrl = '\\'' + unwrappedUrl.replace(/'/g, '%27') + '\\'';\n    }\n  }\n  var attributes = {\n    'http-equiv': 'refresh',\n    'content': (opt_secs || 0) + '; url=' + unwrappedUrl\n  };\n\n  // This function will handle the HTML escaping for attributes.\n  return goog.html.SafeHtml.createSafeHtmlTagSecurityPrivateDoNotAccessOrElse(\n      'meta', attributes);\n};\n\n\n/**\n * @param {string} tagName The tag name.\n * @param {string} name The attribute name.\n * @param {!goog.html.SafeHtml.AttributeValue} value The attribute value.\n * @return {string} A \"name=value\" string.\n * @throws {!Error} If attribute value is unsafe for the given tag and\n *     attribute.\n * @private\n */\ngoog.html.SafeHtml.getAttrNameAndValue_ = function(tagName, name, value) {\n  // If it's goog.string.Const, allow any valid attribute name.\n  if (value instanceof goog.string.Const) {\n    value = goog.string.Const.unwrap(value);\n  } else if (name.toLowerCase() == 'style') {\n    if (goog.html.SafeHtml.SUPPORT_STYLE_ATTRIBUTE) {\n      value = goog.html.SafeHtml.getStyleValue_(value);\n    } else {\n      throw new Error(\n          goog.html.SafeHtml.ENABLE_ERROR_MESSAGES ?\n              'Attribute \"style\" not supported.' :\n              '');\n    }\n  } else if (/^on/i.test(name)) {\n    // TODO(jakubvrana): Disallow more attributes with a special meaning.\n    throw new Error(\n        goog.html.SafeHtml.ENABLE_ERROR_MESSAGES ? 'Attribute \"' + name +\n                '\" requires goog.string.Const value, \"' + value + '\" given.' :\n                                                   '');\n    // URL attributes handled differently according to tag.\n  } else if (name.toLowerCase() in goog.html.SafeHtml.URL_ATTRIBUTES_) {\n    if (value instanceof goog.html.TrustedResourceUrl) {\n      value = goog.html.TrustedResourceUrl.unwrap(value);\n    } else if (value instanceof goog.html.SafeUrl) {\n      value = goog.html.SafeUrl.unwrap(value);\n    } else if (typeof value === 'string') {\n      value = goog.html.SafeUrl.sanitize(value).getTypedStringValue();\n    } else {\n      throw new Error(\n          goog.html.SafeHtml.ENABLE_ERROR_MESSAGES ?\n              'Attribute \"' + name + '\" on tag \"' + tagName +\n                  '\" requires goog.html.SafeUrl, goog.string.Const, or' +\n                  ' string, value \"' + value + '\" given.' :\n              '');\n    }\n  }\n\n  // Accept SafeUrl, TrustedResourceUrl, etc. for attributes which only require\n  // HTML-escaping.\n  if (value.implementsGoogStringTypedString) {\n    // Ok to call getTypedStringValue() since there's no reliance on the type\n    // contract for security here.\n    value =\n        /** @type {!goog.string.TypedString} */ (value).getTypedStringValue();\n  }\n\n  goog.asserts.assert(\n      typeof value === 'string' || typeof value === 'number',\n      'String or number value expected, got ' + (typeof value) +\n          ' with value: ' + value);\n  return name + '=\"' + goog.string.internal.htmlEscape(String(value)) + '\"';\n};\n\n\n/**\n * Gets value allowed in \"style\" attribute.\n * @param {!goog.html.SafeHtml.AttributeValue} value It could be SafeStyle or a\n *     map which will be passed to goog.html.SafeStyle.create.\n * @return {string} Unwrapped value.\n * @throws {!Error} If string value is given.\n * @private\n */\ngoog.html.SafeHtml.getStyleValue_ = function(value) {\n  if (!goog.isObject(value)) {\n    throw new Error(\n        goog.html.SafeHtml.ENABLE_ERROR_MESSAGES ?\n            'The \"style\" attribute requires goog.html.SafeStyle or map ' +\n                'of style properties, ' + (typeof value) + ' given: ' + value :\n            '');\n  }\n  if (!(value instanceof goog.html.SafeStyle)) {\n    // Process the property bag into a style object.\n    value = goog.html.SafeStyle.create(value);\n  }\n  return goog.html.SafeStyle.unwrap(value);\n};\n\n\n/**\n * Creates a SafeHtml content with known directionality consisting of a tag with\n * optional attributes and optional content.\n * @param {!goog.i18n.bidi.Dir} dir Directionality.\n * @param {string} tagName\n * @param {?Object<string, ?goog.html.SafeHtml.AttributeValue>=} opt_attributes\n * @param {!goog.html.SafeHtml.TextOrHtml_|\n *     !Array<!goog.html.SafeHtml.TextOrHtml_>=} opt_content\n * @return {!goog.html.SafeHtml} The SafeHtml content with the tag.\n */\ngoog.html.SafeHtml.createWithDir = function(\n    dir, tagName, opt_attributes, opt_content) {\n  var html = goog.html.SafeHtml.create(tagName, opt_attributes, opt_content);\n  html.dir_ = dir;\n  return html;\n};\n\n\n/**\n * Creates a new SafeHtml object by joining the parts with separator.\n * @param {!goog.html.SafeHtml.TextOrHtml_} separator\n * @param {!Array<!goog.html.SafeHtml.TextOrHtml_|\n *     !Array<!goog.html.SafeHtml.TextOrHtml_>>} parts Parts to join. If a part\n *     contains an array then each member of this array is also joined with the\n *     separator.\n * @return {!goog.html.SafeHtml}\n */\ngoog.html.SafeHtml.join = function(separator, parts) {\n  var separatorHtml = goog.html.SafeHtml.htmlEscape(separator);\n  var dir = separatorHtml.getDirection();\n  var content = [];\n\n  /**\n   * @param {!goog.html.SafeHtml.TextOrHtml_|\n   *     !Array<!goog.html.SafeHtml.TextOrHtml_>} argument\n   */\n  var addArgument = function(argument) {\n    if (Array.isArray(argument)) {\n      goog.array.forEach(argument, addArgument);\n    } else {\n      var html = goog.html.SafeHtml.htmlEscape(argument);\n      content.push(goog.html.SafeHtml.unwrap(html));\n      var htmlDir = html.getDirection();\n      if (dir == goog.i18n.bidi.Dir.NEUTRAL) {\n        dir = htmlDir;\n      } else if (htmlDir != goog.i18n.bidi.Dir.NEUTRAL && dir != htmlDir) {\n        dir = null;\n      }\n    }\n  };\n\n  goog.array.forEach(parts, addArgument);\n  return goog.html.SafeHtml.createSafeHtmlSecurityPrivateDoNotAccessOrElse(\n      content.join(goog.html.SafeHtml.unwrap(separatorHtml)), dir);\n};\n\n\n/**\n * Creates a new SafeHtml object by concatenating values.\n * @param {...(!goog.html.SafeHtml.TextOrHtml_|\n *     !Array<!goog.html.SafeHtml.TextOrHtml_>)} var_args Values to concatenate.\n * @return {!goog.html.SafeHtml}\n */\ngoog.html.SafeHtml.concat = function(var_args) {\n  return goog.html.SafeHtml.join(\n      goog.html.SafeHtml.EMPTY, Array.prototype.slice.call(arguments));\n};\n\n\n/**\n * Creates a new SafeHtml object with known directionality by concatenating the\n * values.\n * @param {!goog.i18n.bidi.Dir} dir Directionality.\n * @param {...(!goog.html.SafeHtml.TextOrHtml_|\n *     !Array<!goog.html.SafeHtml.TextOrHtml_>)} var_args Elements of array\n *     arguments would be processed recursively.\n * @return {!goog.html.SafeHtml}\n */\ngoog.html.SafeHtml.concatWithDir = function(dir, var_args) {\n  var html = goog.html.SafeHtml.concat(goog.array.slice(arguments, 1));\n  html.dir_ = dir;\n  return html;\n};\n\n\n/**\n * Token used to ensure that object is created only from this file. No code\n * outside of this file can access this token.\n * @private {!Object}\n * @const\n */\ngoog.html.SafeHtml.CONSTRUCTOR_TOKEN_PRIVATE_ = {};\n\n\n/**\n * Package-internal utility method to create SafeHtml instances.\n *\n * @param {string} html The string to initialize the SafeHtml object with.\n * @param {?goog.i18n.bidi.Dir} dir The directionality of the SafeHtml to be\n *     constructed, or null if unknown.\n * @return {!goog.html.SafeHtml} The initialized SafeHtml object.\n * @package\n */\ngoog.html.SafeHtml.createSafeHtmlSecurityPrivateDoNotAccessOrElse = function(\n    html, dir) {\n  const policy = goog.html.trustedtypes.getPolicyPrivateDoNotAccessOrElse();\n  const trustedHtml = policy ? policy.createHTML(html) : html;\n  return new goog.html.SafeHtml(\n      trustedHtml, dir, goog.html.SafeHtml.CONSTRUCTOR_TOKEN_PRIVATE_);\n};\n\n\n/**\n * Like create() but does not restrict which tags can be constructed.\n *\n * @param {string} tagName Tag name. Set or validated by caller.\n * @param {?Object<string, ?goog.html.SafeHtml.AttributeValue>=} opt_attributes\n * @param {(!goog.html.SafeHtml.TextOrHtml_|\n *     !Array<!goog.html.SafeHtml.TextOrHtml_>)=} opt_content\n * @return {!goog.html.SafeHtml}\n * @throws {!Error} If invalid or unsafe attribute name or value is provided.\n * @throws {!goog.asserts.AssertionError} If content for void tag is provided.\n * @package\n */\ngoog.html.SafeHtml.createSafeHtmlTagSecurityPrivateDoNotAccessOrElse = function(\n    tagName, opt_attributes, opt_content) {\n  var dir = null;\n  var result = '<' + tagName;\n  result += goog.html.SafeHtml.stringifyAttributes(tagName, opt_attributes);\n\n  var content = opt_content;\n  if (content == null) {\n    content = [];\n  } else if (!Array.isArray(content)) {\n    content = [content];\n  }\n\n  if (goog.dom.tags.isVoidTag(tagName.toLowerCase())) {\n    goog.asserts.assert(\n        !content.length, 'Void tag <' + tagName + '> does not allow content.');\n    result += '>';\n  } else {\n    var html = goog.html.SafeHtml.concat(content);\n    result += '>' + goog.html.SafeHtml.unwrap(html) + '</' + tagName + '>';\n    dir = html.getDirection();\n  }\n\n  var dirAttribute = opt_attributes && opt_attributes['dir'];\n  if (dirAttribute) {\n    if (/^(ltr|rtl|auto)$/i.test(dirAttribute)) {\n      // If the tag has the \"dir\" attribute specified then its direction is\n      // neutral because it can be safely used in any context.\n      dir = goog.i18n.bidi.Dir.NEUTRAL;\n    } else {\n      dir = null;\n    }\n  }\n\n  return goog.html.SafeHtml.createSafeHtmlSecurityPrivateDoNotAccessOrElse(\n      result, dir);\n};\n\n\n/**\n * Creates a string with attributes to insert after tagName.\n * @param {string} tagName\n * @param {?Object<string, ?goog.html.SafeHtml.AttributeValue>=} opt_attributes\n * @return {string} Returns an empty string if there are no attributes, returns\n *     a string starting with a space otherwise.\n * @throws {!Error} If attribute value is unsafe for the given tag and\n *     attribute.\n * @package\n */\ngoog.html.SafeHtml.stringifyAttributes = function(tagName, opt_attributes) {\n  var result = '';\n  if (opt_attributes) {\n    for (var name in opt_attributes) {\n      // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty#Using_hasOwnProperty_as_a_property_name\n      if (Object.prototype.hasOwnProperty.call(opt_attributes, name)) {\n        if (!goog.html.SafeHtml.VALID_NAMES_IN_TAG_.test(name)) {\n          throw new Error(\n              goog.html.SafeHtml.ENABLE_ERROR_MESSAGES ?\n                  'Invalid attribute name \"' + name + '\".' :\n                  '');\n        }\n        var value = opt_attributes[name];\n        if (value == null) {\n          continue;\n        }\n        result +=\n            ' ' + goog.html.SafeHtml.getAttrNameAndValue_(tagName, name, value);\n      }\n    }\n  }\n  return result;\n};\n\n\n/**\n * @param {!Object<string, ?goog.html.SafeHtml.AttributeValue>} fixedAttributes\n * @param {!Object<string, string>} defaultAttributes\n * @param {?Object<string, ?goog.html.SafeHtml.AttributeValue>=} opt_attributes\n *     Optional attributes passed to create*().\n * @return {!Object<string, ?goog.html.SafeHtml.AttributeValue>}\n * @throws {!Error} If opt_attributes contains an attribute with the same name\n *     as an attribute in fixedAttributes.\n * @package\n */\ngoog.html.SafeHtml.combineAttributes = function(\n    fixedAttributes, defaultAttributes, opt_attributes) {\n  var combinedAttributes = {};\n  var name;\n\n  for (name in fixedAttributes) {\n    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty#Using_hasOwnProperty_as_a_property_name\n    if (Object.prototype.hasOwnProperty.call(fixedAttributes, name)) {\n      goog.asserts.assert(name.toLowerCase() == name, 'Must be lower case');\n      combinedAttributes[name] = fixedAttributes[name];\n    }\n  }\n  for (name in defaultAttributes) {\n    if (Object.prototype.hasOwnProperty.call(defaultAttributes, name)) {\n      goog.asserts.assert(name.toLowerCase() == name, 'Must be lower case');\n      combinedAttributes[name] = defaultAttributes[name];\n    }\n  }\n\n  if (opt_attributes) {\n    for (name in opt_attributes) {\n      if (Object.prototype.hasOwnProperty.call(opt_attributes, name)) {\n        var nameLower = name.toLowerCase();\n        if (nameLower in fixedAttributes) {\n          throw new Error(\n              goog.html.SafeHtml.ENABLE_ERROR_MESSAGES ?\n                  'Cannot override \"' + nameLower + '\" attribute, got \"' +\n                      name + '\" with value \"' + opt_attributes[name] + '\"' :\n                  '');\n        }\n        if (nameLower in defaultAttributes) {\n          delete combinedAttributes[nameLower];\n        }\n        combinedAttributes[name] = opt_attributes[name];\n      }\n    }\n  }\n\n  return combinedAttributes;\n};\n\n\n/**\n * A SafeHtml instance corresponding to the HTML doctype: \"<!DOCTYPE html>\".\n * @const {!goog.html.SafeHtml}\n */\ngoog.html.SafeHtml.DOCTYPE_HTML = /** @type {!goog.html.SafeHtml} */ ({\n  // NOTE: this compiles to nothing, but hides the possible side effect of\n  // SafeHtml creation (due to calling trustedTypes.createPolicy) from the\n  // compiler so that the entire call can be removed if the result is not used.\n  valueOf: function() {\n    return goog.html.SafeHtml.createSafeHtmlSecurityPrivateDoNotAccessOrElse(\n        '<!DOCTYPE html>', goog.i18n.bidi.Dir.NEUTRAL);\n  },\n}.valueOf());\n\n/**\n * A SafeHtml instance corresponding to the empty string.\n * @const {!goog.html.SafeHtml}\n */\ngoog.html.SafeHtml.EMPTY = new goog.html.SafeHtml(\n    (goog.global.trustedTypes && goog.global.trustedTypes.emptyHTML) || '',\n    goog.i18n.bidi.Dir.NEUTRAL, goog.html.SafeHtml.CONSTRUCTOR_TOKEN_PRIVATE_);\n\n/**\n * A SafeHtml instance corresponding to the <br> tag.\n * @const {!goog.html.SafeHtml}\n */\ngoog.html.SafeHtml.BR = /** @type {!goog.html.SafeHtml} */ ({\n  // NOTE: this compiles to nothing, but hides the possible side effect of\n  // SafeHtml creation (due to calling trustedTypes.createPolicy) from the\n  // compiler so that the entire call can be removed if the result is not used.\n  valueOf: function() {\n    return goog.html.SafeHtml.createSafeHtmlSecurityPrivateDoNotAccessOrElse(\n        '<br>', goog.i18n.bidi.Dir.NEUTRAL);\n  },\n}.valueOf());\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Type-safe wrappers for unsafe DOM APIs.\n *\n * This file provides type-safe wrappers for DOM APIs that can result in\n * cross-site scripting (XSS) vulnerabilities, if the API is supplied with\n * untrusted (attacker-controlled) input.  Instead of plain strings, the type\n * safe wrappers consume values of types from the goog.html package whose\n * contract promises that values are safe to use in the corresponding context.\n *\n * Hence, a program that exclusively uses the wrappers in this file (i.e., whose\n * only reference to security-sensitive raw DOM APIs are in this file) is\n * guaranteed to be free of XSS due to incorrect use of such DOM APIs (modulo\n * correctness of code that produces values of the respective goog.html types,\n * and absent code that violates type safety).\n *\n * For example, assigning to an element's .innerHTML property a string that is\n * derived (even partially) from untrusted input typically results in an XSS\n * vulnerability. The type-safe wrapper goog.dom.safe.setInnerHtml consumes a\n * value of type goog.html.SafeHtml, whose contract states that using its values\n * in a HTML context will not result in XSS. Hence a program that is free of\n * direct assignments to any element's innerHTML property (with the exception of\n * the assignment to .innerHTML in this file) is guaranteed to be free of XSS\n * due to assignment of untrusted strings to the innerHTML property.\n */\n\ngoog.provide('goog.dom.safe');\ngoog.provide('goog.dom.safe.InsertAdjacentHtmlPosition');\n\ngoog.require('goog.asserts');\ngoog.require('goog.dom.asserts');\ngoog.require('goog.functions');\ngoog.require('goog.html.SafeHtml');\ngoog.require('goog.html.SafeScript');\ngoog.require('goog.html.SafeStyle');\ngoog.require('goog.html.SafeUrl');\ngoog.require('goog.html.TrustedResourceUrl');\ngoog.require('goog.html.uncheckedconversions');\ngoog.require('goog.string.Const');\ngoog.require('goog.string.internal');\n\n\n/** @enum {string} */\ngoog.dom.safe.InsertAdjacentHtmlPosition = {\n  AFTERBEGIN: 'afterbegin',\n  AFTEREND: 'afterend',\n  BEFOREBEGIN: 'beforebegin',\n  BEFOREEND: 'beforeend'\n};\n\n\n/**\n * Inserts known-safe HTML into a Node, at the specified position.\n * @param {!Node} node The node on which to call insertAdjacentHTML.\n * @param {!goog.dom.safe.InsertAdjacentHtmlPosition} position Position where\n *     to insert the HTML.\n * @param {!goog.html.SafeHtml} html The known-safe HTML to insert.\n */\ngoog.dom.safe.insertAdjacentHtml = function(node, position, html) {\n  node.insertAdjacentHTML(position, goog.html.SafeHtml.unwrapTrustedHTML(html));\n};\n\n\n/**\n * Tags not allowed in goog.dom.safe.setInnerHtml.\n * @private @const {!Object<string, boolean>}\n */\ngoog.dom.safe.SET_INNER_HTML_DISALLOWED_TAGS_ = {\n  'MATH': true,\n  'SCRIPT': true,\n  'STYLE': true,\n  'SVG': true,\n  'TEMPLATE': true\n};\n\n\n/**\n * Whether assigning to innerHTML results in a non-spec-compliant clean-up. Used\n * to define goog.dom.safe.unsafeSetInnerHtmlDoNotUseOrElse.\n *\n * <p>As mentioned in https://stackoverflow.com/questions/28741528, re-rendering\n * an element in IE by setting innerHTML causes IE to recursively disconnect all\n * parent/children connections that were in the previous contents of the\n * element. Unfortunately, this can unexpectedly result in confusing cases where\n * a function is run (typically asynchronously) on element that has since\n * disconnected from the DOM but assumes the presence of its children. A simple\n * workaround is to remove all children first. Testing on IE11 via\n * https://jsperf.com/innerhtml-vs-removechild/239, removeChild seems to be\n * ~10x faster than innerHTML='' for a large number of children (perhaps due\n * to the latter's recursive behavior), implying that this workaround would\n * not hurt performance and might actually improve it.\n * @return {boolean}\n * @private\n */\ngoog.dom.safe.isInnerHtmlCleanupRecursive_ =\n    goog.functions.cacheReturnValue(function() {\n      // `document` missing in some test frameworks.\n      if (goog.DEBUG && typeof document === 'undefined') {\n        return false;\n      }\n      // Create 3 nested <div>s without using innerHTML.\n      // We're not chaining the appendChilds in one call,  as this breaks\n      // in a DocumentFragment.\n      var div = document.createElement('div');\n      var childDiv = document.createElement('div');\n      childDiv.appendChild(document.createElement('div'));\n      div.appendChild(childDiv);\n      // `firstChild` is null in Google Js Test.\n      if (goog.DEBUG && !div.firstChild) {\n        return false;\n      }\n      var innerChild = div.firstChild.firstChild;\n      div.innerHTML =\n          goog.html.SafeHtml.unwrapTrustedHTML(goog.html.SafeHtml.EMPTY);\n      return !innerChild.parentElement;\n    });\n\n\n/**\n * Assigns HTML to an element's innerHTML property. Helper to use only here and\n * in soy.js.\n * @param {?Element|?ShadowRoot} elem The element whose innerHTML is to be\n *     assigned to.\n * @param {!goog.html.SafeHtml} html\n */\ngoog.dom.safe.unsafeSetInnerHtmlDoNotUseOrElse = function(elem, html) {\n  // See comment above goog.dom.safe.isInnerHtmlCleanupRecursive_.\n  if (goog.dom.safe.isInnerHtmlCleanupRecursive_()) {\n    while (elem.lastChild) {\n      elem.removeChild(elem.lastChild);\n    }\n  }\n  elem.innerHTML = goog.html.SafeHtml.unwrapTrustedHTML(html);\n};\n\n\n/**\n * Assigns known-safe HTML to an element's innerHTML property.\n * @param {!Element|!ShadowRoot} elem The element whose innerHTML is to be\n *     assigned to.\n * @param {!goog.html.SafeHtml} html The known-safe HTML to assign.\n * @throws {Error} If called with one of these tags: math, script, style, svg,\n *     template.\n */\ngoog.dom.safe.setInnerHtml = function(elem, html) {\n  if (goog.asserts.ENABLE_ASSERTS && elem.tagName) {\n    var tagName = elem.tagName.toUpperCase();\n    if (goog.dom.safe.SET_INNER_HTML_DISALLOWED_TAGS_[tagName]) {\n      throw new Error(\n          'goog.dom.safe.setInnerHtml cannot be used to set content of ' +\n          elem.tagName + '.');\n    }\n  }\n\n  goog.dom.safe.unsafeSetInnerHtmlDoNotUseOrElse(elem, html);\n};\n\n\n/**\n * Assigns constant HTML to an element's innerHTML property.\n * @param {!Element} element The element whose innerHTML is to be assigned to.\n * @param {!goog.string.Const} constHtml The known-safe HTML to assign.\n * @throws {!Error} If called with one of these tags: math, script, style, svg,\n *     template.\n */\ngoog.dom.safe.setInnerHtmlFromConstant = function(element, constHtml) {\n  goog.dom.safe.setInnerHtml(\n      element,\n      goog.html.uncheckedconversions\n          .safeHtmlFromStringKnownToSatisfyTypeContract(\n              goog.string.Const.from('Constant HTML to be immediatelly used.'),\n              goog.string.Const.unwrap(constHtml)));\n};\n\n\n/**\n * Assigns known-safe HTML to an element's outerHTML property.\n * @param {!Element} elem The element whose outerHTML is to be assigned to.\n * @param {!goog.html.SafeHtml} html The known-safe HTML to assign.\n */\ngoog.dom.safe.setOuterHtml = function(elem, html) {\n  elem.outerHTML = goog.html.SafeHtml.unwrapTrustedHTML(html);\n};\n\n\n/**\n * Safely assigns a URL a form element's action property.\n *\n * If url is of type goog.html.SafeUrl, its value is unwrapped and assigned to\n * form's action property.  If url is of type string however, it is first\n * sanitized using goog.html.SafeUrl.sanitize.\n *\n * Example usage:\n *   goog.dom.safe.setFormElementAction(formEl, url);\n * which is a safe alternative to\n *   formEl.action = url;\n * The latter can result in XSS vulnerabilities if url is a\n * user-/attacker-controlled value.\n *\n * @param {!Element} form The form element whose action property\n *     is to be assigned to.\n * @param {string|!goog.html.SafeUrl} url The URL to assign.\n * @see goog.html.SafeUrl#sanitize\n */\ngoog.dom.safe.setFormElementAction = function(form, url) {\n  /** @type {!goog.html.SafeUrl} */\n  var safeUrl;\n  if (url instanceof goog.html.SafeUrl) {\n    safeUrl = url;\n  } else {\n    safeUrl = goog.html.SafeUrl.sanitizeAssertUnchanged(url);\n  }\n  goog.dom.asserts.assertIsHTMLFormElement(form).action =\n      goog.html.SafeUrl.unwrap(safeUrl);\n};\n\n/**\n * Safely assigns a URL to a button element's formaction property.\n *\n * If url is of type goog.html.SafeUrl, its value is unwrapped and assigned to\n * button's formaction property.  If url is of type string however, it is first\n * sanitized using goog.html.SafeUrl.sanitize.\n *\n * Example usage:\n *   goog.dom.safe.setButtonFormAction(buttonEl, url);\n * which is a safe alternative to\n *   buttonEl.action = url;\n * The latter can result in XSS vulnerabilities if url is a\n * user-/attacker-controlled value.\n *\n * @param {!Element} button The button element whose action property\n *     is to be assigned to.\n * @param {string|!goog.html.SafeUrl} url The URL to assign.\n * @see goog.html.SafeUrl#sanitize\n */\ngoog.dom.safe.setButtonFormAction = function(button, url) {\n  /** @type {!goog.html.SafeUrl} */\n  var safeUrl;\n  if (url instanceof goog.html.SafeUrl) {\n    safeUrl = url;\n  } else {\n    safeUrl = goog.html.SafeUrl.sanitizeAssertUnchanged(url);\n  }\n  goog.dom.asserts.assertIsHTMLButtonElement(button).formAction =\n      goog.html.SafeUrl.unwrap(safeUrl);\n};\n/**\n * Safely assigns a URL to an input element's formaction property.\n *\n * If url is of type goog.html.SafeUrl, its value is unwrapped and assigned to\n * input's formaction property.  If url is of type string however, it is first\n * sanitized using goog.html.SafeUrl.sanitize.\n *\n * Example usage:\n *   goog.dom.safe.setInputFormAction(inputEl, url);\n * which is a safe alternative to\n *   inputEl.action = url;\n * The latter can result in XSS vulnerabilities if url is a\n * user-/attacker-controlled value.\n *\n * @param {!Element} input The input element whose action property\n *     is to be assigned to.\n * @param {string|!goog.html.SafeUrl} url The URL to assign.\n * @see goog.html.SafeUrl#sanitize\n */\ngoog.dom.safe.setInputFormAction = function(input, url) {\n  /** @type {!goog.html.SafeUrl} */\n  var safeUrl;\n  if (url instanceof goog.html.SafeUrl) {\n    safeUrl = url;\n  } else {\n    safeUrl = goog.html.SafeUrl.sanitizeAssertUnchanged(url);\n  }\n  goog.dom.asserts.assertIsHTMLInputElement(input).formAction =\n      goog.html.SafeUrl.unwrap(safeUrl);\n};\n\n/**\n * Sets the given element's style property to the contents of the provided\n * SafeStyle object.\n * @param {!Element} elem\n * @param {!goog.html.SafeStyle} style\n */\ngoog.dom.safe.setStyle = function(elem, style) {\n  elem.style.cssText = goog.html.SafeStyle.unwrap(style);\n};\n\n\n/**\n * Writes known-safe HTML to a document.\n * @param {!Document} doc The document to be written to.\n * @param {!goog.html.SafeHtml} html The known-safe HTML to assign.\n */\ngoog.dom.safe.documentWrite = function(doc, html) {\n  doc.write(goog.html.SafeHtml.unwrapTrustedHTML(html));\n};\n\n\n/**\n * Safely assigns a URL to an anchor element's href property.\n *\n * If url is of type goog.html.SafeUrl, its value is unwrapped and assigned to\n * anchor's href property.  If url is of type string however, it is first\n * sanitized using goog.html.SafeUrl.sanitize.\n *\n * Example usage:\n *   goog.dom.safe.setAnchorHref(anchorEl, url);\n * which is a safe alternative to\n *   anchorEl.href = url;\n * The latter can result in XSS vulnerabilities if url is a\n * user-/attacker-controlled value.\n *\n * @param {!HTMLAnchorElement} anchor The anchor element whose href property\n *     is to be assigned to.\n * @param {string|!goog.html.SafeUrl} url The URL to assign.\n * @see goog.html.SafeUrl#sanitize\n */\ngoog.dom.safe.setAnchorHref = function(anchor, url) {\n  goog.dom.asserts.assertIsHTMLAnchorElement(anchor);\n  /** @type {!goog.html.SafeUrl} */\n  var safeUrl;\n  if (url instanceof goog.html.SafeUrl) {\n    safeUrl = url;\n  } else {\n    safeUrl = goog.html.SafeUrl.sanitizeAssertUnchanged(url);\n  }\n  anchor.href = goog.html.SafeUrl.unwrap(safeUrl);\n};\n\n\n/**\n * Safely assigns a URL to an image element's src property.\n *\n * If url is of type goog.html.SafeUrl, its value is unwrapped and assigned to\n * image's src property.  If url is of type string however, it is first\n * sanitized using goog.html.SafeUrl.sanitize.\n *\n * @param {!HTMLImageElement} imageElement The image element whose src property\n *     is to be assigned to.\n * @param {string|!goog.html.SafeUrl} url The URL to assign.\n * @see goog.html.SafeUrl#sanitize\n */\ngoog.dom.safe.setImageSrc = function(imageElement, url) {\n  goog.dom.asserts.assertIsHTMLImageElement(imageElement);\n  /** @type {!goog.html.SafeUrl} */\n  var safeUrl;\n  if (url instanceof goog.html.SafeUrl) {\n    safeUrl = url;\n  } else {\n    var allowDataUrl = /^data:image\\//i.test(url);\n    safeUrl = goog.html.SafeUrl.sanitizeAssertUnchanged(url, allowDataUrl);\n  }\n  imageElement.src = goog.html.SafeUrl.unwrap(safeUrl);\n};\n\n/**\n * Safely assigns a URL to a audio element's src property.\n *\n * If url is of type goog.html.SafeUrl, its value is unwrapped and assigned to\n * audio's src property.  If url is of type string however, it is first\n * sanitized using goog.html.SafeUrl.sanitize.\n *\n * @param {!HTMLAudioElement} audioElement The audio element whose src property\n *     is to be assigned to.\n * @param {string|!goog.html.SafeUrl} url The URL to assign.\n * @see goog.html.SafeUrl#sanitize\n */\ngoog.dom.safe.setAudioSrc = function(audioElement, url) {\n  goog.dom.asserts.assertIsHTMLAudioElement(audioElement);\n  /** @type {!goog.html.SafeUrl} */\n  var safeUrl;\n  if (url instanceof goog.html.SafeUrl) {\n    safeUrl = url;\n  } else {\n    var allowDataUrl = /^data:audio\\//i.test(url);\n    safeUrl = goog.html.SafeUrl.sanitizeAssertUnchanged(url, allowDataUrl);\n  }\n  audioElement.src = goog.html.SafeUrl.unwrap(safeUrl);\n};\n\n/**\n * Safely assigns a URL to a video element's src property.\n *\n * If url is of type goog.html.SafeUrl, its value is unwrapped and assigned to\n * video's src property.  If url is of type string however, it is first\n * sanitized using goog.html.SafeUrl.sanitize.\n *\n * @param {!HTMLVideoElement} videoElement The video element whose src property\n *     is to be assigned to.\n * @param {string|!goog.html.SafeUrl} url The URL to assign.\n * @see goog.html.SafeUrl#sanitize\n */\ngoog.dom.safe.setVideoSrc = function(videoElement, url) {\n  goog.dom.asserts.assertIsHTMLVideoElement(videoElement);\n  /** @type {!goog.html.SafeUrl} */\n  var safeUrl;\n  if (url instanceof goog.html.SafeUrl) {\n    safeUrl = url;\n  } else {\n    var allowDataUrl = /^data:video\\//i.test(url);\n    safeUrl = goog.html.SafeUrl.sanitizeAssertUnchanged(url, allowDataUrl);\n  }\n  videoElement.src = goog.html.SafeUrl.unwrap(safeUrl);\n};\n\n/**\n * Safely assigns a URL to an embed element's src property.\n *\n * Example usage:\n *   goog.dom.safe.setEmbedSrc(embedEl, url);\n * which is a safe alternative to\n *   embedEl.src = url;\n * The latter can result in loading untrusted code unless it is ensured that\n * the URL refers to a trustworthy resource.\n *\n * @param {!HTMLEmbedElement} embed The embed element whose src property\n *     is to be assigned to.\n * @param {!goog.html.TrustedResourceUrl} url The URL to assign.\n */\ngoog.dom.safe.setEmbedSrc = function(embed, url) {\n  goog.dom.asserts.assertIsHTMLEmbedElement(embed);\n  embed.src = goog.html.TrustedResourceUrl.unwrapTrustedScriptURL(url);\n};\n\n\n/**\n * Safely assigns a URL to a frame element's src property.\n *\n * Example usage:\n *   goog.dom.safe.setFrameSrc(frameEl, url);\n * which is a safe alternative to\n *   frameEl.src = url;\n * The latter can result in loading untrusted code unless it is ensured that\n * the URL refers to a trustworthy resource.\n *\n * @param {!HTMLFrameElement} frame The frame element whose src property\n *     is to be assigned to.\n * @param {!goog.html.TrustedResourceUrl} url The URL to assign.\n */\ngoog.dom.safe.setFrameSrc = function(frame, url) {\n  goog.dom.asserts.assertIsHTMLFrameElement(frame);\n  frame.src = goog.html.TrustedResourceUrl.unwrap(url);\n};\n\n\n/**\n * Safely assigns a URL to an iframe element's src property.\n *\n * Example usage:\n *   goog.dom.safe.setIframeSrc(iframeEl, url);\n * which is a safe alternative to\n *   iframeEl.src = url;\n * The latter can result in loading untrusted code unless it is ensured that\n * the URL refers to a trustworthy resource.\n *\n * @param {!HTMLIFrameElement} iframe The iframe element whose src property\n *     is to be assigned to.\n * @param {!goog.html.TrustedResourceUrl} url The URL to assign.\n */\ngoog.dom.safe.setIframeSrc = function(iframe, url) {\n  goog.dom.asserts.assertIsHTMLIFrameElement(iframe);\n  iframe.src = goog.html.TrustedResourceUrl.unwrap(url);\n};\n\n\n/**\n * Safely assigns HTML to an iframe element's srcdoc property.\n *\n * Example usage:\n *   goog.dom.safe.setIframeSrcdoc(iframeEl, safeHtml);\n * which is a safe alternative to\n *   iframeEl.srcdoc = html;\n * The latter can result in loading untrusted code.\n *\n * @param {!HTMLIFrameElement} iframe The iframe element whose srcdoc property\n *     is to be assigned to.\n * @param {!goog.html.SafeHtml} html The HTML to assign.\n */\ngoog.dom.safe.setIframeSrcdoc = function(iframe, html) {\n  goog.dom.asserts.assertIsHTMLIFrameElement(iframe);\n  iframe.srcdoc = goog.html.SafeHtml.unwrapTrustedHTML(html);\n};\n\n\n/**\n * Safely sets a link element's href and rel properties. Whether or not\n * the URL assigned to href has to be a goog.html.TrustedResourceUrl\n * depends on the value of the rel property. If rel contains \"stylesheet\"\n * then a TrustedResourceUrl is required.\n *\n * Example usage:\n *   goog.dom.safe.setLinkHrefAndRel(linkEl, url, 'stylesheet');\n * which is a safe alternative to\n *   linkEl.rel = 'stylesheet';\n *   linkEl.href = url;\n * The latter can result in loading untrusted code unless it is ensured that\n * the URL refers to a trustworthy resource.\n *\n * @param {!HTMLLinkElement} link The link element whose href property\n *     is to be assigned to.\n * @param {string|!goog.html.SafeUrl|!goog.html.TrustedResourceUrl} url The URL\n *     to assign to the href property. Must be a TrustedResourceUrl if the\n *     value assigned to rel contains \"stylesheet\". A string value is\n *     sanitized with goog.html.SafeUrl.sanitize.\n * @param {string} rel The value to assign to the rel property.\n * @throws {Error} if rel contains \"stylesheet\" and url is not a\n *     TrustedResourceUrl\n * @see goog.html.SafeUrl#sanitize\n */\ngoog.dom.safe.setLinkHrefAndRel = function(link, url, rel) {\n  goog.dom.asserts.assertIsHTMLLinkElement(link);\n  link.rel = rel;\n  if (goog.string.internal.caseInsensitiveContains(rel, 'stylesheet')) {\n    goog.asserts.assert(\n        url instanceof goog.html.TrustedResourceUrl,\n        'URL must be TrustedResourceUrl because \"rel\" contains \"stylesheet\"');\n    link.href = goog.html.TrustedResourceUrl.unwrap(url);\n  } else if (url instanceof goog.html.TrustedResourceUrl) {\n    link.href = goog.html.TrustedResourceUrl.unwrap(url);\n  } else if (url instanceof goog.html.SafeUrl) {\n    link.href = goog.html.SafeUrl.unwrap(url);\n  } else {  // string\n    // SafeUrl.sanitize must return legitimate SafeUrl when passed a string.\n    link.href = goog.html.SafeUrl.unwrap(\n        goog.html.SafeUrl.sanitizeAssertUnchanged(url));\n  }\n};\n\n\n/**\n * Safely assigns a URL to an object element's data property.\n *\n * Example usage:\n *   goog.dom.safe.setObjectData(objectEl, url);\n * which is a safe alternative to\n *   objectEl.data = url;\n * The latter can result in loading untrusted code unless setit is ensured that\n * the URL refers to a trustworthy resource.\n *\n * @param {!HTMLObjectElement} object The object element whose data property\n *     is to be assigned to.\n * @param {!goog.html.TrustedResourceUrl} url The URL to assign.\n */\ngoog.dom.safe.setObjectData = function(object, url) {\n  goog.dom.asserts.assertIsHTMLObjectElement(object);\n  object.data = goog.html.TrustedResourceUrl.unwrapTrustedScriptURL(url);\n};\n\n\n/**\n * Safely assigns a URL to a script element's src property.\n *\n * Example usage:\n *   goog.dom.safe.setScriptSrc(scriptEl, url);\n * which is a safe alternative to\n *   scriptEl.src = url;\n * The latter can result in loading untrusted code unless it is ensured that\n * the URL refers to a trustworthy resource.\n *\n * @param {!HTMLScriptElement} script The script element whose src property\n *     is to be assigned to.\n * @param {!goog.html.TrustedResourceUrl} url The URL to assign.\n */\ngoog.dom.safe.setScriptSrc = function(script, url) {\n  goog.dom.asserts.assertIsHTMLScriptElement(script);\n  script.src = goog.html.TrustedResourceUrl.unwrapTrustedScriptURL(url);\n  goog.dom.safe.setNonceForScriptElement_(script);\n};\n\n\n/**\n * Safely assigns a value to a script element's content.\n *\n * Example usage:\n *   goog.dom.safe.setScriptContent(scriptEl, content);\n * which is a safe alternative to\n *   scriptEl.text = content;\n * The latter can result in executing untrusted code unless it is ensured that\n * the code is loaded from a trustworthy resource.\n *\n * @param {!HTMLScriptElement} script The script element whose content is being\n *     set.\n * @param {!goog.html.SafeScript} content The content to assign.\n */\ngoog.dom.safe.setScriptContent = function(script, content) {\n  goog.dom.asserts.assertIsHTMLScriptElement(script);\n  script.textContent = goog.html.SafeScript.unwrapTrustedScript(content);\n  goog.dom.safe.setNonceForScriptElement_(script);\n};\n\n\n/**\n * Set nonce-based CSPs to dynamically created scripts.\n * @param {!HTMLScriptElement} script The script element whose nonce value\n *     is to be calculated\n * @private\n */\ngoog.dom.safe.setNonceForScriptElement_ = function(script) {\n  var win = script.ownerDocument && script.ownerDocument.defaultView;\n  var nonce = goog.getScriptNonce(win);\n  if (nonce) {\n    script.setAttribute('nonce', nonce);\n  }\n};\n\n\n/**\n * Safely assigns a URL to a Location object's href property.\n *\n * If url is of type goog.html.SafeUrl, its value is unwrapped and assigned to\n * loc's href property.  If url is of type string however, it is first sanitized\n * using goog.html.SafeUrl.sanitize.\n *\n * Example usage:\n *   goog.dom.safe.setLocationHref(document.location, redirectUrl);\n * which is a safe alternative to\n *   document.location.href = redirectUrl;\n * The latter can result in XSS vulnerabilities if redirectUrl is a\n * user-/attacker-controlled value.\n *\n * @param {!Location} loc The Location object whose href property is to be\n *     assigned to.\n * @param {string|!goog.html.SafeUrl} url The URL to assign.\n * @see goog.html.SafeUrl#sanitize\n */\ngoog.dom.safe.setLocationHref = function(loc, url) {\n  goog.dom.asserts.assertIsLocation(loc);\n  /** @type {!goog.html.SafeUrl} */\n  var safeUrl;\n  if (url instanceof goog.html.SafeUrl) {\n    safeUrl = url;\n  } else {\n    safeUrl = goog.html.SafeUrl.sanitizeAssertUnchanged(url);\n  }\n  loc.href = goog.html.SafeUrl.unwrap(safeUrl);\n};\n\n/**\n * Safely assigns the URL of a Location object.\n *\n * If url is of type goog.html.SafeUrl, its value is unwrapped and\n * passed to Location#assign. If url is of type string however, it is\n * first sanitized using goog.html.SafeUrl.sanitize.\n *\n * Example usage:\n *   goog.dom.safe.assignLocation(document.location, newUrl);\n * which is a safe alternative to\n *   document.location.assign(newUrl);\n * The latter can result in XSS vulnerabilities if newUrl is a\n * user-/attacker-controlled value.\n *\n * This has the same behaviour as setLocationHref, however some test\n * mock Location.assign instead of a property assignment.\n *\n * @param {!Location} loc The Location object which is to be assigned.\n * @param {string|!goog.html.SafeUrl} url The URL to assign.\n * @see goog.html.SafeUrl#sanitize\n */\ngoog.dom.safe.assignLocation = function(loc, url) {\n  goog.dom.asserts.assertIsLocation(loc);\n  /** @type {!goog.html.SafeUrl} */\n  var safeUrl;\n  if (url instanceof goog.html.SafeUrl) {\n    safeUrl = url;\n  } else {\n    safeUrl = goog.html.SafeUrl.sanitizeAssertUnchanged(url);\n  }\n  loc.assign(goog.html.SafeUrl.unwrap(safeUrl));\n};\n\n\n/**\n * Safely replaces the URL of a Location object.\n *\n * If url is of type goog.html.SafeUrl, its value is unwrapped and\n * passed to Location#replace. If url is of type string however, it is\n * first sanitized using goog.html.SafeUrl.sanitize.\n *\n * Example usage:\n *   goog.dom.safe.replaceLocation(document.location, newUrl);\n * which is a safe alternative to\n *   document.location.replace(newUrl);\n * The latter can result in XSS vulnerabilities if newUrl is a\n * user-/attacker-controlled value.\n *\n * @param {!Location} loc The Location object which is to be replaced.\n * @param {string|!goog.html.SafeUrl} url The URL to assign.\n * @see goog.html.SafeUrl#sanitize\n */\ngoog.dom.safe.replaceLocation = function(loc, url) {\n  /** @type {!goog.html.SafeUrl} */\n  var safeUrl;\n  if (url instanceof goog.html.SafeUrl) {\n    safeUrl = url;\n  } else {\n    safeUrl = goog.html.SafeUrl.sanitizeAssertUnchanged(url);\n  }\n  loc.replace(goog.html.SafeUrl.unwrap(safeUrl));\n};\n\n\n/**\n * Safely opens a URL in a new window (via window.open).\n *\n * If url is of type goog.html.SafeUrl, its value is unwrapped and passed in to\n * window.open.  If url is of type string however, it is first sanitized\n * using goog.html.SafeUrl.sanitize.\n *\n * Note that this function does not prevent leakages via the referer that is\n * sent by window.open. It is advised to only use this to open 1st party URLs.\n *\n * Example usage:\n *   goog.dom.safe.openInWindow(url);\n * which is a safe alternative to\n *   window.open(url);\n * The latter can result in XSS vulnerabilities if url is a\n * user-/attacker-controlled value.\n *\n * @param {string|!goog.html.SafeUrl} url The URL to open.\n * @param {Window=} opt_openerWin Window of which to call the .open() method.\n *     Defaults to the global window.\n * @param {!goog.string.Const|string=} opt_name Name of the window to open in.\n *     Can be _top, etc as allowed by window.open(). This accepts string for\n *     legacy reasons. Pass goog.string.Const if possible.\n * @param {string=} opt_specs Comma-separated list of specifications, same as\n *     in window.open().\n * @param {boolean=} opt_replace Whether to replace the current entry in browser\n *     history, same as in window.open().\n * @return {Window} Window the url was opened in.\n */\ngoog.dom.safe.openInWindow = function(\n    url, opt_openerWin, opt_name, opt_specs, opt_replace) {\n  /** @type {!goog.html.SafeUrl} */\n  var safeUrl;\n  if (url instanceof goog.html.SafeUrl) {\n    safeUrl = url;\n  } else {\n    safeUrl = goog.html.SafeUrl.sanitizeAssertUnchanged(url);\n  }\n  var win = opt_openerWin || goog.global;\n  // If opt_name is undefined, simply passing that in to open() causes IE to\n  // reuse the current window instead of opening a new one. Thus we pass '' in\n  // instead, which according to spec opens a new window. See\n  // https://html.spec.whatwg.org/multipage/browsers.html#dom-open .\n  var name = opt_name instanceof goog.string.Const ?\n      goog.string.Const.unwrap(opt_name) :\n      opt_name || '';\n  return win.open(\n      goog.html.SafeUrl.unwrap(safeUrl), name, opt_specs, opt_replace);\n};\n\n\n/**\n * Parses the HTML as 'text/html'.\n * @param {!DOMParser} parser\n * @param {!goog.html.SafeHtml} html The HTML to be parsed.\n * @return {?Document}\n */\ngoog.dom.safe.parseFromStringHtml = function(parser, html) {\n  return goog.dom.safe.parseFromString(parser, html, 'text/html');\n};\n\n\n/**\n * Parses the string.\n * @param {!DOMParser} parser\n * @param {!goog.html.SafeHtml} content Note: We don't have a special type for\n *     XML od SVG supported by this function so we use SafeHtml.\n * @param {string} type\n * @return {?Document}\n */\ngoog.dom.safe.parseFromString = function(parser, content, type) {\n  return parser.parseFromString(\n      goog.html.SafeHtml.unwrapTrustedHTML(content), type);\n};\n\n\n/**\n * Safely creates an HTMLImageElement from a Blob.\n *\n * Example usage:\n *     goog.dom.safe.createImageFromBlob(blob);\n * which is a safe alternative to\n *     image.src = createObjectUrl(blob)\n * The latter can result in executing malicious same-origin scripts from a bad\n * Blob.\n * @param {!Blob} blob The blob to create the image from.\n * @return {!HTMLImageElement} The image element created from the blob.\n * @throws {!Error} If called with a Blob with a MIME type other than image/.*.\n */\ngoog.dom.safe.createImageFromBlob = function(blob) {\n  // Any image/* MIME type is accepted as safe.\n  if (!/^image\\/.*/g.test(blob.type)) {\n    throw new Error(\n        'goog.dom.safe.createImageFromBlob only accepts MIME type image/.*.');\n  }\n  var objectUrl = goog.global.URL.createObjectURL(blob);\n  var image = new goog.global.Image();\n  image.onload = function() {\n    goog.global.URL.revokeObjectURL(objectUrl);\n  };\n  goog.dom.safe.setImageSrc(\n      image,\n      goog.html.uncheckedconversions\n          .safeUrlFromStringKnownToSatisfyTypeContract(\n              goog.string.Const.from('Image blob URL.'), objectUrl));\n  return image;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Utilities for string manipulation.\n */\n\n\n/**\n * Namespace for string utilities\n */\ngoog.provide('goog.string');\ngoog.provide('goog.string.Unicode');\n\ngoog.require('goog.dom.safe');\ngoog.require('goog.html.uncheckedconversions');\ngoog.require('goog.string.Const');\ngoog.require('goog.string.internal');\n\n\n/**\n * @define {boolean} Enables HTML escaping of lowercase letter \"e\" which helps\n * with detection of double-escaping as this letter is frequently used.\n */\ngoog.string.DETECT_DOUBLE_ESCAPING =\n    goog.define('goog.string.DETECT_DOUBLE_ESCAPING', false);\n\n\n/**\n * @define {boolean} Whether to force non-dom html unescaping.\n */\ngoog.string.FORCE_NON_DOM_HTML_UNESCAPING =\n    goog.define('goog.string.FORCE_NON_DOM_HTML_UNESCAPING', false);\n\n\n/**\n * Common Unicode string characters.\n * @enum {string}\n */\ngoog.string.Unicode = {\n  NBSP: '\\xa0'\n};\n\n\n/**\n * Fast prefix-checker.\n * @param {string} str The string to check.\n * @param {string} prefix A string to look for at the start of `str`.\n * @return {boolean} True if `str` begins with `prefix`.\n */\ngoog.string.startsWith = goog.string.internal.startsWith;\n\n\n/**\n * Fast suffix-checker.\n * @param {string} str The string to check.\n * @param {string} suffix A string to look for at the end of `str`.\n * @return {boolean} True if `str` ends with `suffix`.\n */\ngoog.string.endsWith = goog.string.internal.endsWith;\n\n\n/**\n * Case-insensitive prefix-checker.\n * @param {string} str The string to check.\n * @param {string} prefix  A string to look for at the end of `str`.\n * @return {boolean} True if `str` begins with `prefix` (ignoring\n *     case).\n */\ngoog.string.caseInsensitiveStartsWith =\n    goog.string.internal.caseInsensitiveStartsWith;\n\n\n/**\n * Case-insensitive suffix-checker.\n * @param {string} str The string to check.\n * @param {string} suffix A string to look for at the end of `str`.\n * @return {boolean} True if `str` ends with `suffix` (ignoring\n *     case).\n */\ngoog.string.caseInsensitiveEndsWith =\n    goog.string.internal.caseInsensitiveEndsWith;\n\n\n/**\n * Case-insensitive equality checker.\n * @param {string} str1 First string to check.\n * @param {string} str2 Second string to check.\n * @return {boolean} True if `str1` and `str2` are the same string,\n *     ignoring case.\n */\ngoog.string.caseInsensitiveEquals = goog.string.internal.caseInsensitiveEquals;\n\n\n/**\n * Does simple python-style string substitution.\n * subs(\"foo%s hot%s\", \"bar\", \"dog\") becomes \"foobar hotdog\".\n * @param {string} str The string containing the pattern.\n * @param {...*} var_args The items to substitute into the pattern.\n * @return {string} A copy of `str` in which each occurrence of\n *     {@code %s} has been replaced an argument from `var_args`.\n */\ngoog.string.subs = function(str, var_args) {\n  'use strict';\n  var splitParts = str.split('%s');\n  var returnString = '';\n\n  var subsArguments = Array.prototype.slice.call(arguments, 1);\n  while (subsArguments.length &&\n         // Replace up to the last split part. We are inserting in the\n         // positions between split parts.\n         splitParts.length > 1) {\n    returnString += splitParts.shift() + subsArguments.shift();\n  }\n\n  return returnString + splitParts.join('%s');  // Join unused '%s'\n};\n\n\n/**\n * Converts multiple whitespace chars (spaces, non-breaking-spaces, new lines\n * and tabs) to a single space, and strips leading and trailing whitespace.\n * @param {string} str Input string.\n * @return {string} A copy of `str` with collapsed whitespace.\n */\ngoog.string.collapseWhitespace = function(str) {\n  'use strict';\n  // Since IE doesn't include non-breaking-space (0xa0) in their \\s character\n  // class (as required by section 7.2 of the ECMAScript spec), we explicitly\n  // include it in the regexp to enforce consistent cross-browser behavior.\n  return str.replace(/[\\s\\xa0]+/g, ' ').replace(/^\\s+|\\s+$/g, '');\n};\n\n\n/**\n * Checks if a string is empty or contains only whitespaces.\n * @param {string} str The string to check.\n * @return {boolean} Whether `str` is empty or whitespace only.\n */\ngoog.string.isEmptyOrWhitespace = goog.string.internal.isEmptyOrWhitespace;\n\n\n/**\n * Checks if a string is empty.\n * @param {string} str The string to check.\n * @return {boolean} Whether `str` is empty.\n */\ngoog.string.isEmptyString = function(str) {\n  'use strict';\n  return str.length == 0;\n};\n\n\n/**\n * Checks if a string is empty or contains only whitespaces.\n *\n * @param {string} str The string to check.\n * @return {boolean} Whether `str` is empty or whitespace only.\n * @deprecated Use goog.string.isEmptyOrWhitespace instead.\n */\ngoog.string.isEmpty = goog.string.isEmptyOrWhitespace;\n\n\n/**\n * Checks if a string is null, undefined, empty or contains only whitespaces.\n * @param {*} str The string to check.\n * @return {boolean} Whether `str` is null, undefined, empty, or\n *     whitespace only.\n * @deprecated Use goog.string.isEmptyOrWhitespace(goog.string.makeSafe(str))\n *     instead.\n */\ngoog.string.isEmptyOrWhitespaceSafe = function(str) {\n  'use strict';\n  return goog.string.isEmptyOrWhitespace(goog.string.makeSafe(str));\n};\n\n\n/**\n * Checks if a string is null, undefined, empty or contains only whitespaces.\n *\n * @param {*} str The string to check.\n * @return {boolean} Whether `str` is null, undefined, empty, or\n *     whitespace only.\n * @deprecated Use goog.string.isEmptyOrWhitespace instead.\n */\ngoog.string.isEmptySafe = goog.string.isEmptyOrWhitespaceSafe;\n\n\n/**\n * Checks if a string is all breaking whitespace.\n * @param {string} str The string to check.\n * @return {boolean} Whether the string is all breaking whitespace.\n */\ngoog.string.isBreakingWhitespace = function(str) {\n  'use strict';\n  return !/[^\\t\\n\\r ]/.test(str);\n};\n\n\n/**\n * Checks if a string contains all letters.\n * @param {string} str string to check.\n * @return {boolean} True if `str` consists entirely of letters.\n */\ngoog.string.isAlpha = function(str) {\n  'use strict';\n  return !/[^a-zA-Z]/.test(str);\n};\n\n\n/**\n * Checks if a string contains only numbers.\n * @param {*} str string to check. If not a string, it will be\n *     casted to one.\n * @return {boolean} True if `str` is numeric.\n */\ngoog.string.isNumeric = function(str) {\n  'use strict';\n  return !/[^0-9]/.test(str);\n};\n\n\n/**\n * Checks if a string contains only numbers or letters.\n * @param {string} str string to check.\n * @return {boolean} True if `str` is alphanumeric.\n */\ngoog.string.isAlphaNumeric = function(str) {\n  'use strict';\n  return !/[^a-zA-Z0-9]/.test(str);\n};\n\n\n/**\n * Checks if a character is a space character.\n * @param {string} ch Character to check.\n * @return {boolean} True if `ch` is a space.\n */\ngoog.string.isSpace = function(ch) {\n  'use strict';\n  return ch == ' ';\n};\n\n\n/**\n * Checks if a character is a valid unicode character.\n * @param {string} ch Character to check.\n * @return {boolean} True if `ch` is a valid unicode character.\n */\ngoog.string.isUnicodeChar = function(ch) {\n  'use strict';\n  return ch.length == 1 && ch >= ' ' && ch <= '~' ||\n      ch >= '\\u0080' && ch <= '\\uFFFD';\n};\n\n\n/**\n * Takes a string and replaces newlines with a space. Multiple lines are\n * replaced with a single space.\n * @param {string} str The string from which to strip newlines.\n * @return {string} A copy of `str` stripped of newlines.\n */\ngoog.string.stripNewlines = function(str) {\n  'use strict';\n  return str.replace(/(\\r\\n|\\r|\\n)+/g, ' ');\n};\n\n\n/**\n * Replaces Windows and Mac new lines with unix style: \\r or \\r\\n with \\n.\n * @param {string} str The string to in which to canonicalize newlines.\n * @return {string} `str` A copy of {@code} with canonicalized newlines.\n */\ngoog.string.canonicalizeNewlines = function(str) {\n  'use strict';\n  return str.replace(/(\\r\\n|\\r|\\n)/g, '\\n');\n};\n\n\n/**\n * Normalizes whitespace in a string, replacing all whitespace chars with\n * a space.\n * @param {string} str The string in which to normalize whitespace.\n * @return {string} A copy of `str` with all whitespace normalized.\n */\ngoog.string.normalizeWhitespace = function(str) {\n  'use strict';\n  return str.replace(/\\xa0|\\s/g, ' ');\n};\n\n\n/**\n * Normalizes spaces in a string, replacing all consecutive spaces and tabs\n * with a single space. Replaces non-breaking space with a space.\n * @param {string} str The string in which to normalize spaces.\n * @return {string} A copy of `str` with all consecutive spaces and tabs\n *    replaced with a single space.\n */\ngoog.string.normalizeSpaces = function(str) {\n  'use strict';\n  return str.replace(/\\xa0|[ \\t]+/g, ' ');\n};\n\n\n/**\n * Removes the breaking spaces from the left and right of the string and\n * collapses the sequences of breaking spaces in the middle into single spaces.\n * The original and the result strings render the same way in HTML.\n * @param {string} str A string in which to collapse spaces.\n * @return {string} Copy of the string with normalized breaking spaces.\n */\ngoog.string.collapseBreakingSpaces = function(str) {\n  'use strict';\n  return str.replace(/[\\t\\r\\n ]+/g, ' ')\n      .replace(/^[\\t\\r\\n ]+|[\\t\\r\\n ]+$/g, '');\n};\n\n\n/**\n * Trims white spaces to the left and right of a string.\n * @param {string} str The string to trim.\n * @return {string} A trimmed copy of `str`.\n */\ngoog.string.trim = goog.string.internal.trim;\n\n\n/**\n * Trims whitespaces at the left end of a string.\n * @param {string} str The string to left trim.\n * @return {string} A trimmed copy of `str`.\n */\ngoog.string.trimLeft = function(str) {\n  'use strict';\n  // Since IE doesn't include non-breaking-space (0xa0) in their \\s character\n  // class (as required by section 7.2 of the ECMAScript spec), we explicitly\n  // include it in the regexp to enforce consistent cross-browser behavior.\n  return str.replace(/^[\\s\\xa0]+/, '');\n};\n\n\n/**\n * Trims whitespaces at the right end of a string.\n * @param {string} str The string to right trim.\n * @return {string} A trimmed copy of `str`.\n */\ngoog.string.trimRight = function(str) {\n  'use strict';\n  // Since IE doesn't include non-breaking-space (0xa0) in their \\s character\n  // class (as required by section 7.2 of the ECMAScript spec), we explicitly\n  // include it in the regexp to enforce consistent cross-browser behavior.\n  return str.replace(/[\\s\\xa0]+$/, '');\n};\n\n\n/**\n * A string comparator that ignores case.\n * -1 = str1 less than str2\n *  0 = str1 equals str2\n *  1 = str1 greater than str2\n *\n * @param {string} str1 The string to compare.\n * @param {string} str2 The string to compare `str1` to.\n * @return {number} The comparator result, as described above.\n */\ngoog.string.caseInsensitiveCompare =\n    goog.string.internal.caseInsensitiveCompare;\n\n\n/**\n * Compares two strings interpreting their numeric substrings as numbers.\n *\n * @param {string} str1 First string.\n * @param {string} str2 Second string.\n * @param {!RegExp} tokenizerRegExp Splits a string into substrings of\n *     non-negative integers, non-numeric characters and optionally fractional\n *     numbers starting with a decimal point.\n * @return {number} Negative if str1 < str2, 0 is str1 == str2, positive if\n *     str1 > str2.\n * @private\n */\ngoog.string.numberAwareCompare_ = function(str1, str2, tokenizerRegExp) {\n  'use strict';\n  if (str1 == str2) {\n    return 0;\n  }\n  if (!str1) {\n    return -1;\n  }\n  if (!str2) {\n    return 1;\n  }\n\n  // Using match to split the entire string ahead of time turns out to be faster\n  // for most inputs than using RegExp.exec or iterating over each character.\n  var tokens1 = str1.toLowerCase().match(tokenizerRegExp);\n  var tokens2 = str2.toLowerCase().match(tokenizerRegExp);\n\n  var count = Math.min(tokens1.length, tokens2.length);\n\n  for (var i = 0; i < count; i++) {\n    var a = tokens1[i];\n    var b = tokens2[i];\n\n    // Compare pairs of tokens, returning if one token sorts before the other.\n    if (a != b) {\n      // Only if both tokens are integers is a special comparison required.\n      // Decimal numbers are sorted as strings (e.g., '.09' < '.1').\n      var num1 = parseInt(a, 10);\n      if (!isNaN(num1)) {\n        var num2 = parseInt(b, 10);\n        if (!isNaN(num2) && num1 - num2) {\n          return num1 - num2;\n        }\n      }\n      return a < b ? -1 : 1;\n    }\n  }\n\n  // If one string is a substring of the other, the shorter string sorts first.\n  if (tokens1.length != tokens2.length) {\n    return tokens1.length - tokens2.length;\n  }\n\n  // The two strings must be equivalent except for case (perfect equality is\n  // tested at the head of the function.) Revert to default ASCII string\n  // comparison to stabilize the sort.\n  return str1 < str2 ? -1 : 1;\n};\n\n\n/**\n * String comparison function that handles non-negative integer numbers in a\n * way humans might expect. Using this function, the string 'File 2.jpg' sorts\n * before 'File 10.jpg', and 'Version 1.9' before 'Version 1.10'. The comparison\n * is mostly case-insensitive, though strings that are identical except for case\n * are sorted with the upper-case strings before lower-case.\n *\n * This comparison function is up to 50x slower than either the default or the\n * case-insensitive compare. It should not be used in time-critical code, but\n * should be fast enough to sort several hundred short strings (like filenames)\n * with a reasonable delay.\n *\n * @param {string} str1 The string to compare in a numerically sensitive way.\n * @param {string} str2 The string to compare `str1` to.\n * @return {number} less than 0 if str1 < str2, 0 if str1 == str2, greater than\n *     0 if str1 > str2.\n */\ngoog.string.intAwareCompare = function(str1, str2) {\n  'use strict';\n  return goog.string.numberAwareCompare_(str1, str2, /\\d+|\\D+/g);\n};\n\n\n/**\n * String comparison function that handles non-negative integer and fractional\n * numbers in a way humans might expect. Using this function, the string\n * 'File 2.jpg' sorts before 'File 10.jpg', and '3.14' before '3.2'. Equivalent\n * to {@link goog.string.intAwareCompare} apart from the way how it interprets\n * dots.\n *\n * @param {string} str1 The string to compare in a numerically sensitive way.\n * @param {string} str2 The string to compare `str1` to.\n * @return {number} less than 0 if str1 < str2, 0 if str1 == str2, greater than\n *     0 if str1 > str2.\n */\ngoog.string.floatAwareCompare = function(str1, str2) {\n  'use strict';\n  return goog.string.numberAwareCompare_(str1, str2, /\\d+|\\.\\d+|\\D+/g);\n};\n\n\n/**\n * Alias for {@link goog.string.floatAwareCompare}.\n *\n * @param {string} str1\n * @param {string} str2\n * @return {number}\n */\ngoog.string.numerateCompare = goog.string.floatAwareCompare;\n\n\n/**\n * URL-encodes a string\n * @param {*} str The string to url-encode.\n * @return {string} An encoded copy of `str` that is safe for urls.\n *     Note that '#', ':', and other characters used to delimit portions\n *     of URLs *will* be encoded.\n */\ngoog.string.urlEncode = function(str) {\n  'use strict';\n  return encodeURIComponent(String(str));\n};\n\n\n/**\n * URL-decodes the string. We need to specially handle '+'s because\n * the javascript library doesn't convert them to spaces.\n * @param {string} str The string to url decode.\n * @return {string} The decoded `str`.\n */\ngoog.string.urlDecode = function(str) {\n  'use strict';\n  return decodeURIComponent(str.replace(/\\+/g, ' '));\n};\n\n\n/**\n * Converts \\n to <br>s or <br />s.\n * @param {string} str The string in which to convert newlines.\n * @param {boolean=} opt_xml Whether to use XML compatible tags.\n * @return {string} A copy of `str` with converted newlines.\n */\ngoog.string.newLineToBr = goog.string.internal.newLineToBr;\n\n\n/**\n * Escapes double quote '\"' and single quote '\\'' characters in addition to\n * '&', '<', and '>' so that a string can be included in an HTML tag attribute\n * value within double or single quotes.\n *\n * It should be noted that > doesn't need to be escaped for the HTML or XML to\n * be valid, but it has been decided to escape it for consistency with other\n * implementations.\n *\n * With goog.string.DETECT_DOUBLE_ESCAPING, this function escapes also the\n * lowercase letter \"e\".\n *\n * NOTE(user):\n * HtmlEscape is often called during the generation of large blocks of HTML.\n * Using statics for the regular expressions and strings is an optimization\n * that can more than half the amount of time IE spends in this function for\n * large apps, since strings and regexes both contribute to GC allocations.\n *\n * Testing for the presence of a character before escaping increases the number\n * of function calls, but actually provides a speed increase for the average\n * case -- since the average case often doesn't require the escaping of all 4\n * characters and indexOf() is much cheaper than replace().\n * The worst case does suffer slightly from the additional calls, therefore the\n * opt_isLikelyToContainHtmlChars option has been included for situations\n * where all 4 HTML entities are very likely to be present and need escaping.\n *\n * Some benchmarks (times tended to fluctuate +-0.05ms):\n *                                     FireFox                     IE6\n * (no chars / average (mix of cases) / all 4 chars)\n * no checks                     0.13 / 0.22 / 0.22         0.23 / 0.53 / 0.80\n * indexOf                       0.08 / 0.17 / 0.26         0.22 / 0.54 / 0.84\n * indexOf + re test             0.07 / 0.17 / 0.28         0.19 / 0.50 / 0.85\n *\n * An additional advantage of checking if replace actually needs to be called\n * is a reduction in the number of object allocations, so as the size of the\n * application grows the difference between the various methods would increase.\n *\n * @param {string} str string to be escaped.\n * @param {boolean=} opt_isLikelyToContainHtmlChars Don't perform a check to see\n *     if the character needs replacing - use this option if you expect each of\n *     the characters to appear often. Leave false if you expect few html\n *     characters to occur in your strings, such as if you are escaping HTML.\n * @return {string} An escaped copy of `str`.\n */\ngoog.string.htmlEscape = function(str, opt_isLikelyToContainHtmlChars) {\n  'use strict';\n  str = goog.string.internal.htmlEscape(str, opt_isLikelyToContainHtmlChars);\n  if (goog.string.DETECT_DOUBLE_ESCAPING) {\n    str = str.replace(goog.string.E_RE_, '&#101;');\n  }\n  return str;\n};\n\n\n/**\n * Regular expression that matches a lowercase letter \"e\", for use in escaping.\n * @const {!RegExp}\n * @private\n */\ngoog.string.E_RE_ = /e/g;\n\n\n/**\n * Unescapes an HTML string.\n *\n * @param {string} str The string to unescape.\n * @return {string} An unescaped copy of `str`.\n */\ngoog.string.unescapeEntities = function(str) {\n  'use strict';\n  if (goog.string.contains(str, '&')) {\n    // We are careful not to use a DOM if we do not have one or we explicitly\n    // requested non-DOM html unescaping.\n    if (!goog.string.FORCE_NON_DOM_HTML_UNESCAPING &&\n        'document' in goog.global) {\n      return goog.string.unescapeEntitiesUsingDom_(str);\n    } else {\n      // Fall back on pure XML entities\n      return goog.string.unescapePureXmlEntities_(str);\n    }\n  }\n  return str;\n};\n\n\n/**\n * Unescapes a HTML string using the provided document.\n *\n * @param {string} str The string to unescape.\n * @param {!Document} document A document to use in escaping the string.\n * @return {string} An unescaped copy of `str`.\n */\ngoog.string.unescapeEntitiesWithDocument = function(str, document) {\n  'use strict';\n  if (goog.string.contains(str, '&')) {\n    return goog.string.unescapeEntitiesUsingDom_(str, document);\n  }\n  return str;\n};\n\n\n/**\n * Unescapes an HTML string using a DOM to resolve non-XML, non-numeric\n * entities. This function is XSS-safe and whitespace-preserving.\n * @private\n * @param {string} str The string to unescape.\n * @param {Document=} opt_document An optional document to use for creating\n *     elements. If this is not specified then the default window.document\n *     will be used.\n * @return {string} The unescaped `str` string.\n */\ngoog.string.unescapeEntitiesUsingDom_ = function(str, opt_document) {\n  'use strict';\n  /** @type {!Object<string, string>} */\n  var seen = {'&amp;': '&', '&lt;': '<', '&gt;': '>', '&quot;': '\"'};\n  /** @type {!Element} */\n  var div;\n  if (opt_document) {\n    div = opt_document.createElement('div');\n  } else {\n    div = goog.global.document.createElement('div');\n  }\n  // Match as many valid entity characters as possible. If the actual entity\n  // happens to be shorter, it will still work as innerHTML will return the\n  // trailing characters unchanged. Since the entity characters do not include\n  // open angle bracket, there is no chance of XSS from the innerHTML use.\n  // Since no whitespace is passed to innerHTML, whitespace is preserved.\n  return str.replace(goog.string.HTML_ENTITY_PATTERN_, function(s, entity) {\n    'use strict';\n    // Check for cached entity.\n    var value = seen[s];\n    if (value) {\n      return value;\n    }\n    // Check for numeric entity.\n    if (entity.charAt(0) == '#') {\n      // Prefix with 0 so that hex entities (e.g. &#x10) parse as hex numbers.\n      var n = Number('0' + entity.substr(1));\n      if (!isNaN(n)) {\n        value = String.fromCharCode(n);\n      }\n    }\n    // Fall back to innerHTML otherwise.\n    if (!value) {\n      // Append a non-entity character to avoid a bug in Webkit that parses\n      // an invalid entity at the end of innerHTML text as the empty string.\n      goog.dom.safe.setInnerHtml(\n          div,\n          goog.html.uncheckedconversions\n              .safeHtmlFromStringKnownToSatisfyTypeContract(\n                  goog.string.Const.from('Single HTML entity.'), s + ' '));\n      // Then remove the trailing character from the result.\n      value = div.firstChild.nodeValue.slice(0, -1);\n    }\n    // Cache and return.\n    return seen[s] = value;\n  });\n};\n\n\n/**\n * Unescapes XML entities.\n * @private\n * @param {string} str The string to unescape.\n * @return {string} An unescaped copy of `str`.\n */\ngoog.string.unescapePureXmlEntities_ = function(str) {\n  'use strict';\n  return str.replace(/&([^;]+);/g, function(s, entity) {\n    'use strict';\n    switch (entity) {\n      case 'amp':\n        return '&';\n      case 'lt':\n        return '<';\n      case 'gt':\n        return '>';\n      case 'quot':\n        return '\"';\n      default:\n        if (entity.charAt(0) == '#') {\n          // Prefix with 0 so that hex entities (e.g. &#x10) parse as hex.\n          var n = Number('0' + entity.substr(1));\n          if (!isNaN(n)) {\n            return String.fromCharCode(n);\n          }\n        }\n        // For invalid entities we just return the entity\n        return s;\n    }\n  });\n};\n\n\n/**\n * Regular expression that matches an HTML entity.\n * See also HTML5: Tokenization / Tokenizing character references.\n * @private\n * @type {!RegExp}\n */\ngoog.string.HTML_ENTITY_PATTERN_ = /&([^;\\s<&]+);?/g;\n\n\n/**\n * Do escaping of whitespace to preserve spatial formatting. We use character\n * entity #160 to make it safer for xml.\n * @param {string} str The string in which to escape whitespace.\n * @param {boolean=} opt_xml Whether to use XML compatible tags.\n * @return {string} An escaped copy of `str`.\n */\ngoog.string.whitespaceEscape = function(str, opt_xml) {\n  'use strict';\n  // This doesn't use goog.string.preserveSpaces for backwards compatibility.\n  return goog.string.newLineToBr(str.replace(/  /g, ' &#160;'), opt_xml);\n};\n\n\n/**\n * Preserve spaces that would be otherwise collapsed in HTML by replacing them\n * with non-breaking space Unicode characters.\n * @param {string} str The string in which to preserve whitespace.\n * @return {string} A copy of `str` with preserved whitespace.\n */\ngoog.string.preserveSpaces = function(str) {\n  'use strict';\n  return str.replace(/(^|[\\n ]) /g, '$1' + goog.string.Unicode.NBSP);\n};\n\n\n/**\n * Strip quote characters around a string.  The second argument is a string of\n * characters to treat as quotes.  This can be a single character or a string of\n * multiple character and in that case each of those are treated as possible\n * quote characters. For example:\n *\n * <pre>\n * goog.string.stripQuotes('\"abc\"', '\"`') --> 'abc'\n * goog.string.stripQuotes('`abc`', '\"`') --> 'abc'\n * </pre>\n *\n * @param {string} str The string to strip.\n * @param {string} quoteChars The quote characters to strip.\n * @return {string} A copy of `str` without the quotes.\n */\ngoog.string.stripQuotes = function(str, quoteChars) {\n  'use strict';\n  var length = quoteChars.length;\n  for (var i = 0; i < length; i++) {\n    var quoteChar = length == 1 ? quoteChars : quoteChars.charAt(i);\n    if (str.charAt(0) == quoteChar && str.charAt(str.length - 1) == quoteChar) {\n      return str.substring(1, str.length - 1);\n    }\n  }\n  return str;\n};\n\n\n/**\n * Truncates a string to a certain length and adds '...' if necessary.  The\n * length also accounts for the ellipsis, so a maximum length of 10 and a string\n * 'Hello World!' produces 'Hello W...'.\n * @param {string} str The string to truncate.\n * @param {number} chars Max number of characters.\n * @param {boolean=} opt_protectEscapedCharacters Whether to protect escaped\n *     characters from being cut off in the middle.\n * @return {string} The truncated `str` string.\n */\ngoog.string.truncate = function(str, chars, opt_protectEscapedCharacters) {\n  'use strict';\n  if (opt_protectEscapedCharacters) {\n    str = goog.string.unescapeEntities(str);\n  }\n\n  if (str.length > chars) {\n    str = str.substring(0, chars - 3) + '...';\n  }\n\n  if (opt_protectEscapedCharacters) {\n    str = goog.string.htmlEscape(str);\n  }\n\n  return str;\n};\n\n\n/**\n * Truncate a string in the middle, adding \"...\" if necessary,\n * and favoring the beginning of the string.\n * @param {string} str The string to truncate the middle of.\n * @param {number} chars Max number of characters.\n * @param {boolean=} opt_protectEscapedCharacters Whether to protect escaped\n *     characters from being cutoff in the middle.\n * @param {number=} opt_trailingChars Optional number of trailing characters to\n *     leave at the end of the string, instead of truncating as close to the\n *     middle as possible.\n * @return {string} A truncated copy of `str`.\n */\ngoog.string.truncateMiddle = function(\n    str, chars, opt_protectEscapedCharacters, opt_trailingChars) {\n  'use strict';\n  if (opt_protectEscapedCharacters) {\n    str = goog.string.unescapeEntities(str);\n  }\n\n  if (opt_trailingChars && str.length > chars) {\n    if (opt_trailingChars > chars) {\n      opt_trailingChars = chars;\n    }\n    var endPoint = str.length - opt_trailingChars;\n    var startPoint = chars - opt_trailingChars;\n    str = str.substring(0, startPoint) + '...' + str.substring(endPoint);\n  } else if (str.length > chars) {\n    // Favor the beginning of the string:\n    var half = Math.floor(chars / 2);\n    var endPos = str.length - half;\n    half += chars % 2;\n    str = str.substring(0, half) + '...' + str.substring(endPos);\n  }\n\n  if (opt_protectEscapedCharacters) {\n    str = goog.string.htmlEscape(str);\n  }\n\n  return str;\n};\n\n\n/**\n * Special chars that need to be escaped for goog.string.quote.\n * @private {!Object<string, string>}\n */\ngoog.string.specialEscapeChars_ = {\n  '\\0': '\\\\0',\n  '\\b': '\\\\b',\n  '\\f': '\\\\f',\n  '\\n': '\\\\n',\n  '\\r': '\\\\r',\n  '\\t': '\\\\t',\n  '\\x0B': '\\\\x0B',  // '\\v' is not supported in JScript\n  '\"': '\\\\\"',\n  '\\\\': '\\\\\\\\',\n  // To support the use case of embedding quoted strings inside of script\n  // tags, we have to make sure HTML comments and opening/closing script tags do\n  // not appear in the resulting string. The specific strings that must be\n  // escaped are documented at:\n  // https://html.spec.whatwg.org/multipage/scripting.html#restrictions-for-contents-of-script-elements\n  '<': '\\\\u003C'  // NOTE: JSON.parse crashes on '\\\\x3c'.\n};\n\n\n/**\n * Character mappings used internally for goog.string.escapeChar.\n * @private {!Object<string, string>}\n */\ngoog.string.jsEscapeCache_ = {\n  '\\'': '\\\\\\''\n};\n\n\n/**\n * Encloses a string in double quotes and escapes characters so that the\n * string is a valid JS string. The resulting string is safe to embed in\n * `<script>` tags as \"<\" is escaped.\n * @param {string} s The string to quote.\n * @return {string} A copy of `s` surrounded by double quotes.\n */\ngoog.string.quote = function(s) {\n  'use strict';\n  s = String(s);\n  var sb = ['\"'];\n  for (var i = 0; i < s.length; i++) {\n    var ch = s.charAt(i);\n    var cc = ch.charCodeAt(0);\n    sb[i + 1] = goog.string.specialEscapeChars_[ch] ||\n        ((cc > 31 && cc < 127) ? ch : goog.string.escapeChar(ch));\n  }\n  sb.push('\"');\n  return sb.join('');\n};\n\n\n/**\n * Takes a string and returns the escaped string for that input string.\n * @param {string} str The string to escape.\n * @return {string} An escaped string representing `str`.\n */\ngoog.string.escapeString = function(str) {\n  'use strict';\n  var sb = [];\n  for (var i = 0; i < str.length; i++) {\n    sb[i] = goog.string.escapeChar(str.charAt(i));\n  }\n  return sb.join('');\n};\n\n\n/**\n * Takes a character and returns the escaped string for that character. For\n * example escapeChar(String.fromCharCode(15)) -> \"\\\\x0E\".\n * @param {string} c The character to escape.\n * @return {string} An escaped string representing `c`.\n */\ngoog.string.escapeChar = function(c) {\n  'use strict';\n  if (c in goog.string.jsEscapeCache_) {\n    return goog.string.jsEscapeCache_[c];\n  }\n\n  if (c in goog.string.specialEscapeChars_) {\n    return goog.string.jsEscapeCache_[c] = goog.string.specialEscapeChars_[c];\n  }\n\n  var rv = c;\n  var cc = c.charCodeAt(0);\n  if (cc > 31 && cc < 127) {\n    rv = c;\n  } else {\n    // tab is 9 but handled above\n    if (cc < 256) {\n      rv = '\\\\x';\n      if (cc < 16 || cc > 256) {\n        rv += '0';\n      }\n    } else {\n      rv = '\\\\u';\n      if (cc < 4096) {  // \\u1000\n        rv += '0';\n      }\n    }\n    rv += cc.toString(16).toUpperCase();\n  }\n\n  return goog.string.jsEscapeCache_[c] = rv;\n};\n\n\n/**\n * Determines whether a string contains a substring.\n * @param {string} str The string to search.\n * @param {string} subString The substring to search for.\n * @return {boolean} Whether `str` contains `subString`.\n */\ngoog.string.contains = goog.string.internal.contains;\n\n\n/**\n * Determines whether a string contains a substring, ignoring case.\n * @param {string} str The string to search.\n * @param {string} subString The substring to search for.\n * @return {boolean} Whether `str` contains `subString`.\n */\ngoog.string.caseInsensitiveContains =\n    goog.string.internal.caseInsensitiveContains;\n\n\n/**\n * Returns the non-overlapping occurrences of ss in s.\n * If either s or ss evalutes to false, then returns zero.\n * @param {string} s The string to look in.\n * @param {string} ss The string to look for.\n * @return {number} Number of occurrences of ss in s.\n */\ngoog.string.countOf = function(s, ss) {\n  'use strict';\n  return s && ss ? s.split(ss).length - 1 : 0;\n};\n\n\n/**\n * Removes a substring of a specified length at a specific\n * index in a string.\n * @param {string} s The base string from which to remove.\n * @param {number} index The index at which to remove the substring.\n * @param {number} stringLength The length of the substring to remove.\n * @return {string} A copy of `s` with the substring removed or the full\n *     string if nothing is removed or the input is invalid.\n */\ngoog.string.removeAt = function(s, index, stringLength) {\n  'use strict';\n  var resultStr = s;\n  // If the index is greater or equal to 0 then remove substring\n  if (index >= 0 && index < s.length && stringLength > 0) {\n    resultStr = s.substr(0, index) +\n        s.substr(index + stringLength, s.length - index - stringLength);\n  }\n  return resultStr;\n};\n\n\n/**\n * Removes the first occurrence of a substring from a string.\n * @param {string} str The base string from which to remove.\n * @param {string} substr The string to remove.\n * @return {string} A copy of `str` with `substr` removed or the\n *     full string if nothing is removed.\n */\ngoog.string.remove = function(str, substr) {\n  'use strict';\n  return str.replace(substr, '');\n};\n\n\n/**\n *  Removes all occurrences of a substring from a string.\n *  @param {string} s The base string from which to remove.\n *  @param {string} ss The string to remove.\n *  @return {string} A copy of `s` with `ss` removed or the full\n *      string if nothing is removed.\n */\ngoog.string.removeAll = function(s, ss) {\n  'use strict';\n  var re = new RegExp(goog.string.regExpEscape(ss), 'g');\n  return s.replace(re, '');\n};\n\n\n/**\n *  Replaces all occurrences of a substring of a string with a new substring.\n *  @param {string} s The base string from which to remove.\n *  @param {string} ss The string to replace.\n *  @param {string} replacement The replacement string.\n *  @return {string} A copy of `s` with `ss` replaced by\n *      `replacement` or the original string if nothing is replaced.\n */\ngoog.string.replaceAll = function(s, ss, replacement) {\n  'use strict';\n  var re = new RegExp(goog.string.regExpEscape(ss), 'g');\n  return s.replace(re, replacement.replace(/\\$/g, '$$$$'));\n};\n\n\n/**\n * Escapes characters in the string that are not safe to use in a RegExp.\n * @param {*} s The string to escape. If not a string, it will be casted\n *     to one.\n * @return {string} A RegExp safe, escaped copy of `s`.\n */\ngoog.string.regExpEscape = function(s) {\n  'use strict';\n  return String(s)\n      .replace(/([-()\\[\\]{}+?*.$\\^|,:#<!\\\\])/g, '\\\\$1')\n      .replace(/\\x08/g, '\\\\x08');\n};\n\n\n/**\n * Repeats a string n times.\n * @param {string} string The string to repeat.\n * @param {number} length The number of times to repeat.\n * @return {string} A string containing `length` repetitions of\n *     `string`.\n */\ngoog.string.repeat = (String.prototype.repeat) ? function(string, length) {\n  'use strict';\n  // The native method is over 100 times faster than the alternative.\n  return string.repeat(length);\n} : function(string, length) {\n  'use strict';\n  return new Array(length + 1).join(string);\n};\n\n\n/**\n * Pads number to given length and optionally rounds it to a given precision.\n * For example:\n * <pre>padNumber(1.25, 2, 3) -> '01.250'\n * padNumber(1.25, 2) -> '01.25'\n * padNumber(1.25, 2, 1) -> '01.3'\n * padNumber(1.25, 0) -> '1.25'</pre>\n *\n * @param {number} num The number to pad.\n * @param {number} length The desired length.\n * @param {number=} opt_precision The desired precision.\n * @return {string} `num` as a string with the given options.\n */\ngoog.string.padNumber = function(num, length, opt_precision) {\n  'use strict';\n  var s =\n      (opt_precision !== undefined) ? num.toFixed(opt_precision) : String(num);\n  var index = s.indexOf('.');\n  if (index == -1) {\n    index = s.length;\n  }\n  return goog.string.repeat('0', Math.max(0, length - index)) + s;\n};\n\n\n/**\n * Returns a string representation of the given object, with\n * null and undefined being returned as the empty string.\n *\n * @param {*} obj The object to convert.\n * @return {string} A string representation of the `obj`.\n */\ngoog.string.makeSafe = function(obj) {\n  'use strict';\n  return obj == null ? '' : String(obj);\n};\n\n\n/**\n * Concatenates string expressions. This is useful\n * since some browsers are very inefficient when it comes to using plus to\n * concat strings. Be careful when using null and undefined here since\n * these will not be included in the result. If you need to represent these\n * be sure to cast the argument to a String first.\n * For example:\n * <pre>buildString('a', 'b', 'c', 'd') -> 'abcd'\n * buildString(null, undefined) -> ''\n * </pre>\n * @param {...*} var_args A list of strings to concatenate. If not a string,\n *     it will be casted to one.\n * @return {string} The concatenation of `var_args`.\n */\ngoog.string.buildString = function(var_args) {\n  'use strict';\n  return Array.prototype.join.call(arguments, '');\n};\n\n\n/**\n * Returns a string with at least 64-bits of randomness.\n *\n * Doesn't trust JavaScript's random function entirely. Uses a combination of\n * random and current timestamp, and then encodes the string in base-36 to\n * make it shorter.\n *\n * @return {string} A random string, e.g. sn1s7vb4gcic.\n */\ngoog.string.getRandomString = function() {\n  'use strict';\n  var x = 2147483648;\n  return Math.floor(Math.random() * x).toString(36) +\n      Math.abs(Math.floor(Math.random() * x) ^ goog.now()).toString(36);\n};\n\n\n/**\n * Compares two version numbers.\n *\n * @param {string|number} version1 Version of first item.\n * @param {string|number} version2 Version of second item.\n *\n * @return {number}  1 if `version1` is higher.\n *                   0 if arguments are equal.\n *                  -1 if `version2` is higher.\n */\ngoog.string.compareVersions = goog.string.internal.compareVersions;\n\n\n/**\n * String hash function similar to java.lang.String.hashCode().\n * The hash code for a string is computed as\n * s[0] * 31 ^ (n - 1) + s[1] * 31 ^ (n - 2) + ... + s[n - 1],\n * where s[i] is the ith character of the string and n is the length of\n * the string. We mod the result to make it between 0 (inclusive) and 2^32\n * (exclusive).\n * @param {string} str A string.\n * @return {number} Hash value for `str`, between 0 (inclusive) and 2^32\n *  (exclusive). The empty string returns 0.\n */\ngoog.string.hashCode = function(str) {\n  'use strict';\n  var result = 0;\n  for (var i = 0; i < str.length; ++i) {\n    // Normalize to 4 byte range, 0 ... 2^32.\n    result = (31 * result + str.charCodeAt(i)) >>> 0;\n  }\n  return result;\n};\n\n\n/**\n * The most recent unique ID. |0 is equivalent to Math.floor in this case.\n * @type {number}\n * @private\n */\ngoog.string.uniqueStringCounter_ = Math.random() * 0x80000000 | 0;\n\n\n/**\n * Generates and returns a string which is unique in the current document.\n * This is useful, for example, to create unique IDs for DOM elements.\n * @return {string} A unique id.\n */\ngoog.string.createUniqueString = function() {\n  'use strict';\n  return 'goog_' + goog.string.uniqueStringCounter_++;\n};\n\n\n/**\n * Converts the supplied string to a number, which may be Infinity or NaN.\n * This function strips whitespace: (toNumber(' 123') === 123)\n * This function accepts scientific notation: (toNumber('1e1') === 10)\n *\n * This is better than JavaScript's built-in conversions because, sadly:\n *     (Number(' ') === 0) and (parseFloat('123a') === 123)\n *\n * @param {string} str The string to convert.\n * @return {number} The number the supplied string represents, or NaN.\n */\ngoog.string.toNumber = function(str) {\n  'use strict';\n  var num = Number(str);\n  if (num == 0 && goog.string.isEmptyOrWhitespace(str)) {\n    return NaN;\n  }\n  return num;\n};\n\n\n/**\n * Returns whether the given string is lower camel case (e.g. \"isFooBar\").\n *\n * Note that this assumes the string is entirely letters.\n * @see http://en.wikipedia.org/wiki/CamelCase#Variations_and_synonyms\n *\n * @param {string} str String to test.\n * @return {boolean} Whether the string is lower camel case.\n */\ngoog.string.isLowerCamelCase = function(str) {\n  'use strict';\n  return /^[a-z]+([A-Z][a-z]*)*$/.test(str);\n};\n\n\n/**\n * Returns whether the given string is upper camel case (e.g. \"FooBarBaz\").\n *\n * Note that this assumes the string is entirely letters.\n * @see http://en.wikipedia.org/wiki/CamelCase#Variations_and_synonyms\n *\n * @param {string} str String to test.\n * @return {boolean} Whether the string is upper camel case.\n */\ngoog.string.isUpperCamelCase = function(str) {\n  'use strict';\n  return /^([A-Z][a-z]*)+$/.test(str);\n};\n\n\n/**\n * Converts a string from selector-case to camelCase (e.g. from\n * \"multi-part-string\" to \"multiPartString\"), useful for converting\n * CSS selectors and HTML dataset keys to their equivalent JS properties.\n * @param {string} str The string in selector-case form.\n * @return {string} The string in camelCase form.\n */\ngoog.string.toCamelCase = function(str) {\n  'use strict';\n  return String(str).replace(/\\-([a-z])/g, function(all, match) {\n    'use strict';\n    return match.toUpperCase();\n  });\n};\n\n\n/**\n * Converts a string from camelCase to selector-case (e.g. from\n * \"multiPartString\" to \"multi-part-string\"), useful for converting JS\n * style and dataset properties to equivalent CSS selectors and HTML keys.\n * @param {string} str The string in camelCase form.\n * @return {string} The string in selector-case form.\n */\ngoog.string.toSelectorCase = function(str) {\n  'use strict';\n  return String(str).replace(/([A-Z])/g, '-$1').toLowerCase();\n};\n\n\n/**\n * Converts a string into TitleCase. First character of the string is always\n * capitalized in addition to the first letter of every subsequent word.\n * Words are delimited by one or more whitespaces by default. Custom delimiters\n * can optionally be specified to replace the default, which doesn't preserve\n * whitespace delimiters and instead must be explicitly included if needed.\n *\n * Default delimiter => \" \":\n *    goog.string.toTitleCase('oneTwoThree')    => 'OneTwoThree'\n *    goog.string.toTitleCase('one two three')  => 'One Two Three'\n *    goog.string.toTitleCase('  one   two   ') => '  One   Two   '\n *    goog.string.toTitleCase('one_two_three')  => 'One_two_three'\n *    goog.string.toTitleCase('one-two-three')  => 'One-two-three'\n *\n * Custom delimiter => \"_-.\":\n *    goog.string.toTitleCase('oneTwoThree', '_-.')       => 'OneTwoThree'\n *    goog.string.toTitleCase('one two three', '_-.')     => 'One two three'\n *    goog.string.toTitleCase('  one   two   ', '_-.')    => '  one   two   '\n *    goog.string.toTitleCase('one_two_three', '_-.')     => 'One_Two_Three'\n *    goog.string.toTitleCase('one-two-three', '_-.')     => 'One-Two-Three'\n *    goog.string.toTitleCase('one...two...three', '_-.') => 'One...Two...Three'\n *    goog.string.toTitleCase('one. two. three', '_-.')   => 'One. two. three'\n *    goog.string.toTitleCase('one-two.three', '_-.')     => 'One-Two.Three'\n *\n * @param {string} str String value in camelCase form.\n * @param {string=} opt_delimiters Custom delimiter character set used to\n *      distinguish words in the string value. Each character represents a\n *      single delimiter. When provided, default whitespace delimiter is\n *      overridden and must be explicitly included if needed.\n * @return {string} String value in TitleCase form.\n */\ngoog.string.toTitleCase = function(str, opt_delimiters) {\n  'use strict';\n  var delimiters = (typeof opt_delimiters === 'string') ?\n      goog.string.regExpEscape(opt_delimiters) :\n      '\\\\s';\n\n  // For IE8, we need to prevent using an empty character set. Otherwise,\n  // incorrect matching will occur.\n  delimiters = delimiters ? '|[' + delimiters + ']+' : '';\n\n  var regexp = new RegExp('(^' + delimiters + ')([a-z])', 'g');\n  return str.replace(regexp, function(all, p1, p2) {\n    'use strict';\n    return p1 + p2.toUpperCase();\n  });\n};\n\n\n/**\n * Capitalizes a string, i.e. converts the first letter to uppercase\n * and all other letters to lowercase, e.g.:\n *\n * goog.string.capitalize('one')     => 'One'\n * goog.string.capitalize('ONE')     => 'One'\n * goog.string.capitalize('one two') => 'One two'\n *\n * Note that this function does not trim initial whitespace.\n *\n * @param {string} str String value to capitalize.\n * @return {string} String value with first letter in uppercase.\n */\ngoog.string.capitalize = function(str) {\n  'use strict';\n  return String(str.charAt(0)).toUpperCase() +\n      String(str.substr(1)).toLowerCase();\n};\n\n\n/**\n * Parse a string in decimal or hexidecimal ('0xFFFF') form.\n *\n * To parse a particular radix, please use parseInt(string, radix) directly. See\n * https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/parseInt\n *\n * This is a wrapper for the built-in parseInt function that will only parse\n * numbers as base 10 or base 16.  Some JS implementations assume strings\n * starting with \"0\" are intended to be octal. ES3 allowed but discouraged\n * this behavior. ES5 forbids it.  This function emulates the ES5 behavior.\n *\n * For more information, see Mozilla JS Reference: http://goo.gl/8RiFj\n *\n * @param {string|number|null|undefined} value The value to be parsed.\n * @return {number} The number, parsed. If the string failed to parse, this\n *     will be NaN.\n */\ngoog.string.parseInt = function(value) {\n  'use strict';\n  // Force finite numbers to strings.\n  if (isFinite(value)) {\n    value = String(value);\n  }\n\n  if (typeof value === 'string') {\n    // If the string starts with '0x' or '-0x', parse as hex.\n    return /^\\s*-?0x/i.test(value) ? parseInt(value, 16) : parseInt(value, 10);\n  }\n\n  return NaN;\n};\n\n\n/**\n * Splits a string on a separator a limited number of times.\n *\n * This implementation is more similar to Python or Java, where the limit\n * parameter specifies the maximum number of splits rather than truncating\n * the number of results.\n *\n * See http://docs.python.org/2/library/stdtypes.html#str.split\n * See JavaDoc: http://goo.gl/F2AsY\n * See Mozilla reference: http://goo.gl/dZdZs\n *\n * @param {string} str String to split.\n * @param {string} separator The separator.\n * @param {number} limit The limit to the number of splits. The resulting array\n *     will have a maximum length of limit+1.  Negative numbers are the same\n *     as zero.\n * @return {!Array<string>} The string, split.\n */\ngoog.string.splitLimit = function(str, separator, limit) {\n  'use strict';\n  var parts = str.split(separator);\n  var returnVal = [];\n\n  // Only continue doing this while we haven't hit the limit and we have\n  // parts left.\n  while (limit > 0 && parts.length) {\n    returnVal.push(parts.shift());\n    limit--;\n  }\n\n  // If there are remaining parts, append them to the end.\n  if (parts.length) {\n    returnVal.push(parts.join(separator));\n  }\n\n  return returnVal;\n};\n\n\n/**\n * Finds the characters to the right of the last instance of any separator\n *\n * This function is similar to goog.string.path.baseName, except it can take a\n * list of characters to split the string on. It will return the rightmost\n * grouping of characters to the right of any separator as a left-to-right\n * oriented string.\n *\n * @see goog.string.path.baseName\n * @param {string} str The string\n * @param {string|!Array<string>} separators A list of separator characters\n * @return {string} The last part of the string with respect to the separators\n */\ngoog.string.lastComponent = function(str, separators) {\n  'use strict';\n  if (!separators) {\n    return str;\n  } else if (typeof separators == 'string') {\n    separators = [separators];\n  }\n\n  var lastSeparatorIndex = -1;\n  for (var i = 0; i < separators.length; i++) {\n    if (separators[i] == '') {\n      continue;\n    }\n    var currentSeparatorIndex = str.lastIndexOf(separators[i]);\n    if (currentSeparatorIndex > lastSeparatorIndex) {\n      lastSeparatorIndex = currentSeparatorIndex;\n    }\n  }\n  if (lastSeparatorIndex == -1) {\n    return str;\n  }\n  return str.slice(lastSeparatorIndex + 1);\n};\n\n\n/**\n * Computes the Levenshtein edit distance between two strings.\n * @param {string} a\n * @param {string} b\n * @return {number} The edit distance between the two strings.\n */\ngoog.string.editDistance = function(a, b) {\n  'use strict';\n  var v0 = [];\n  var v1 = [];\n\n  if (a == b) {\n    return 0;\n  }\n\n  if (!a.length || !b.length) {\n    return Math.max(a.length, b.length);\n  }\n\n  for (var i = 0; i < b.length + 1; i++) {\n    v0[i] = i;\n  }\n\n  for (var i = 0; i < a.length; i++) {\n    v1[0] = i + 1;\n\n    for (var j = 0; j < b.length; j++) {\n      var cost = Number(a[i] != b[j]);\n      // Cost for the substring is the minimum of adding one character, removing\n      // one character, or a swap.\n      v1[j + 1] = Math.min(v1[j] + 1, v0[j + 1] + 1, v0[j] + cost);\n    }\n\n    for (var j = 0; j < v0.length; j++) {\n      v0[j] = v1[j];\n    }\n  }\n\n  return v1[b.length];\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Useful compiler idioms.\n */\n\ngoog.provide('goog.reflect');\n\n\n/**\n * Syntax for object literal casts.\n * @see http://go/jscompiler-renaming\n * @see https://goo.gl/CRs09P\n *\n * Use this if you have an object literal whose keys need to have the same names\n * as the properties of some class even after they are renamed by the compiler.\n *\n * @param {!Function} type Type to cast to.\n * @param {Object} object Object literal to cast.\n * @return {Object} The object literal.\n */\ngoog.reflect.object = function(type, object) {\n  return object;\n};\n\n/**\n * Syntax for renaming property strings.\n * @see http://go/jscompiler-renaming\n * @see https://goo.gl/CRs09P\n *\n * Use this if you have an need to access a property as a string, but want\n * to also have the property renamed by the compiler. In contrast to\n * goog.reflect.object, this method takes an instance of an object.\n *\n * Properties must be simple names (not qualified names).\n *\n * @param {string} prop Name of the property\n * @param {!Object} object Instance of the object whose type will be used\n *     for renaming\n * @return {string} The renamed property.\n */\ngoog.reflect.objectProperty = function(prop, object) {\n  return prop;\n};\n\n/**\n * To assert to the compiler that an operation is needed when it would\n * otherwise be stripped. For example:\n * <code>\n *     // Force a layout\n *     goog.reflect.sinkValue(dialog.offsetHeight);\n * </code>\n * @param {T} x\n * @return {T}\n * @template T\n */\ngoog.reflect.sinkValue = function(x) {\n  goog.reflect.sinkValue[' '](x);\n  return x;\n};\n\n\n/**\n * The compiler should optimize this function away iff no one ever uses\n * goog.reflect.sinkValue.\n */\ngoog.reflect.sinkValue[' '] = goog.nullFunction;\n\n\n/**\n * Check if a property can be accessed without throwing an exception.\n * @param {Object} obj The owner of the property.\n * @param {string} prop The property name.\n * @return {boolean} Whether the property is accessible. Will also return true\n *     if obj is null.\n */\ngoog.reflect.canAccessProperty = function(obj, prop) {\n\n  try {\n    goog.reflect.sinkValue(obj[prop]);\n    return true;\n  } catch (e) {\n  }\n  return false;\n};\n\n\n/**\n * Retrieves a value from a cache given a key. The compiler provides special\n * consideration for this call such that it is generally considered side-effect\n * free. However, if the `opt_keyFn` or `valueFn` have side-effects\n * then the entire call is considered to have side-effects.\n *\n * Conventionally storing the value on the cache would be considered a\n * side-effect and preclude unused calls from being pruned, ie. even if\n * the value was never used, it would still always be stored in the cache.\n *\n * Providing a side-effect free `valueFn` and `opt_keyFn`\n * allows unused calls to `goog.reflect.cache` to be pruned.\n *\n * @param {!Object<K, V>} cacheObj The object that contains the cached values.\n * @param {?} key The key to lookup in the cache. If it is not string or number\n *     then a `opt_keyFn` should be provided. The key is also used as the\n *     parameter to the `valueFn`.\n * @param {function(?):V} valueFn The value provider to use to calculate the\n *     value to store in the cache. This function should be side-effect free\n *     to take advantage of the optimization.\n * @param {function(?):K=} opt_keyFn The key provider to determine the cache\n *     map key. This should be used if the given key is not a string or number.\n *     If not provided then the given key is used. This function should be\n *     side-effect free to take advantage of the optimization.\n * @return {V} The cached or calculated value.\n * @template K\n * @template V\n */\ngoog.reflect.cache = function(cacheObj, key, valueFn, opt_keyFn) {\n  const storedKey = opt_keyFn ? opt_keyFn(key) : key;\n\n  if (Object.prototype.hasOwnProperty.call(cacheObj, storedKey)) {\n    return cacheObj[storedKey];\n  }\n\n  return (cacheObj[storedKey] = valueFn(key));\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Rendering engine detection.\n * @see <a href=\"http://www.useragentstring.com/\">User agent strings</a>\n * For information on the browser brand (such as Safari versus Chrome), see\n * goog.userAgent.product.\n * @see ../demos/useragent.html\n */\n\ngoog.provide('goog.userAgent');\n\ngoog.require('goog.labs.userAgent.browser');\ngoog.require('goog.labs.userAgent.engine');\ngoog.require('goog.labs.userAgent.platform');\ngoog.require('goog.labs.userAgent.util');\ngoog.require('goog.reflect');\ngoog.require('goog.string');\n\n\n/**\n * @define {boolean} Whether we know at compile-time that the browser is IE.\n */\ngoog.userAgent.ASSUME_IE = goog.define('goog.userAgent.ASSUME_IE', false);\n\n\n/**\n * @define {boolean} Whether we know at compile-time that the browser is EDGE,\n * referring to EdgeHTML based Edge.\n */\ngoog.userAgent.ASSUME_EDGE = goog.define('goog.userAgent.ASSUME_EDGE', false);\n\n\n/**\n * @define {boolean} Whether we know at compile-time that the browser is GECKO.\n */\ngoog.userAgent.ASSUME_GECKO = goog.define('goog.userAgent.ASSUME_GECKO', false);\n\n\n/**\n * @define {boolean} Whether we know at compile-time that the browser is WEBKIT.\n */\ngoog.userAgent.ASSUME_WEBKIT =\n    goog.define('goog.userAgent.ASSUME_WEBKIT', false);\n\n\n/**\n * @define {boolean} Whether we know at compile-time that the browser is a\n *     mobile device running WebKit e.g. iPhone or Android.\n */\ngoog.userAgent.ASSUME_MOBILE_WEBKIT =\n    goog.define('goog.userAgent.ASSUME_MOBILE_WEBKIT', false);\n\n\n/**\n * @define {boolean} Whether we know at compile-time that the browser is OPERA,\n * referring to Presto-based Opera.\n */\ngoog.userAgent.ASSUME_OPERA = goog.define('goog.userAgent.ASSUME_OPERA', false);\n\n\n/**\n * @define {boolean} Whether the\n *     `goog.userAgent.isVersionOrHigher`\n *     function will return true for any version.\n */\ngoog.userAgent.ASSUME_ANY_VERSION =\n    goog.define('goog.userAgent.ASSUME_ANY_VERSION', false);\n\n\n/**\n * Whether we know the browser engine at compile-time.\n * @type {boolean}\n * @private\n */\ngoog.userAgent.BROWSER_KNOWN_ = goog.userAgent.ASSUME_IE ||\n    goog.userAgent.ASSUME_EDGE || goog.userAgent.ASSUME_GECKO ||\n    goog.userAgent.ASSUME_MOBILE_WEBKIT || goog.userAgent.ASSUME_WEBKIT ||\n    goog.userAgent.ASSUME_OPERA;\n\n\n/**\n * Returns the userAgent string for the current browser.\n *\n * @return {string} The userAgent string.\n */\ngoog.userAgent.getUserAgentString = function() {\n  return goog.labs.userAgent.util.getUserAgent();\n};\n\n\n/**\n * @return {?Navigator} The native navigator object.\n */\ngoog.userAgent.getNavigatorTyped = function() {\n  // Need a local navigator reference instead of using the global one,\n  // to avoid the rare case where they reference different objects.\n  // (in a WorkerPool, for example).\n  return goog.global['navigator'] || null;\n};\n\n\n/**\n * TODO(nnaze): Change type to \"Navigator\" and update compilation targets.\n * @return {?Object} The native navigator object.\n */\ngoog.userAgent.getNavigator = function() {\n  return goog.userAgent.getNavigatorTyped();\n};\n\n\n/**\n * Whether the user agent is Presto-based Opera.\n * @type {boolean}\n */\ngoog.userAgent.OPERA = goog.userAgent.BROWSER_KNOWN_ ?\n    goog.userAgent.ASSUME_OPERA :\n    goog.labs.userAgent.browser.isOpera();\n\n\n/**\n * Whether the user agent is Internet Explorer.\n * @type {boolean}\n */\ngoog.userAgent.IE = goog.userAgent.BROWSER_KNOWN_ ?\n    goog.userAgent.ASSUME_IE :\n    goog.labs.userAgent.browser.isIE();\n\n\n/**\n * Whether the user agent is Microsoft Edge (EdgeHTML based).\n * @type {boolean}\n */\ngoog.userAgent.EDGE = goog.userAgent.BROWSER_KNOWN_ ?\n    goog.userAgent.ASSUME_EDGE :\n    goog.labs.userAgent.engine.isEdge();\n\n\n/**\n * Whether the user agent is MS Internet Explorer or MS Edge (EdgeHTML based).\n * @type {boolean}\n */\ngoog.userAgent.EDGE_OR_IE = goog.userAgent.EDGE || goog.userAgent.IE;\n\n\n/**\n * Whether the user agent is Gecko. Gecko is the rendering engine used by\n * Mozilla, Firefox, and others.\n * @type {boolean}\n */\ngoog.userAgent.GECKO = goog.userAgent.BROWSER_KNOWN_ ?\n    goog.userAgent.ASSUME_GECKO :\n    goog.labs.userAgent.engine.isGecko();\n\n\n/**\n * Whether the user agent is WebKit. WebKit is the rendering engine that\n * Safari, Edge Chromium, Opera Chromium, Android and others use.\n * @type {boolean}\n */\ngoog.userAgent.WEBKIT = goog.userAgent.BROWSER_KNOWN_ ?\n    goog.userAgent.ASSUME_WEBKIT || goog.userAgent.ASSUME_MOBILE_WEBKIT :\n    goog.labs.userAgent.engine.isWebKit();\n\n\n/**\n * Whether the user agent is running on a mobile device.\n *\n * This is a separate function so that the logic can be tested.\n *\n * TODO(nnaze): Investigate swapping in goog.labs.userAgent.device.isMobile().\n *\n * @return {boolean} Whether the user agent is running on a mobile device.\n * @private\n */\ngoog.userAgent.isMobile_ = function() {\n  return goog.userAgent.WEBKIT &&\n      goog.labs.userAgent.util.matchUserAgent('Mobile');\n};\n\n\n/**\n * Whether the user agent is running on a mobile device.\n *\n * TODO(nnaze): Consider deprecating MOBILE when labs.userAgent\n *   is promoted as the gecko/webkit logic is likely inaccurate.\n *\n * @type {boolean}\n */\ngoog.userAgent.MOBILE =\n    goog.userAgent.ASSUME_MOBILE_WEBKIT || goog.userAgent.isMobile_();\n\n\n/**\n * Used while transitioning code to use WEBKIT instead.\n * @type {boolean}\n * @deprecated Use {@link goog.userAgent.product.SAFARI} instead.\n * TODO(nicksantos): Delete this from goog.userAgent.\n */\ngoog.userAgent.SAFARI = goog.userAgent.WEBKIT;\n\n\n/**\n * @return {string} the platform (operating system) the user agent is running\n *     on. Default to empty string because navigator.platform may not be defined\n *     (on Rhino, for example).\n * @private\n */\ngoog.userAgent.determinePlatform_ = function() {\n  var navigator = goog.userAgent.getNavigatorTyped();\n  return navigator && navigator.platform || '';\n};\n\n\n/**\n * The platform (operating system) the user agent is running on. Default to\n * empty string because navigator.platform may not be defined (on Rhino, for\n * example).\n * @type {string}\n */\ngoog.userAgent.PLATFORM = goog.userAgent.determinePlatform_();\n\n\n/**\n * @define {boolean} Whether the user agent is running on a Macintosh operating\n *     system.\n */\ngoog.userAgent.ASSUME_MAC = goog.define('goog.userAgent.ASSUME_MAC', false);\n\n\n/**\n * @define {boolean} Whether the user agent is running on a Windows operating\n *     system.\n */\ngoog.userAgent.ASSUME_WINDOWS =\n    goog.define('goog.userAgent.ASSUME_WINDOWS', false);\n\n\n/**\n * @define {boolean} Whether the user agent is running on a Linux operating\n *     system.\n */\ngoog.userAgent.ASSUME_LINUX = goog.define('goog.userAgent.ASSUME_LINUX', false);\n\n\n/**\n * @define {boolean} Whether the user agent is running on a X11 windowing\n *     system.\n */\ngoog.userAgent.ASSUME_X11 = goog.define('goog.userAgent.ASSUME_X11', false);\n\n\n/**\n * @define {boolean} Whether the user agent is running on Android.\n */\ngoog.userAgent.ASSUME_ANDROID =\n    goog.define('goog.userAgent.ASSUME_ANDROID', false);\n\n\n/**\n * @define {boolean} Whether the user agent is running on an iPhone.\n */\ngoog.userAgent.ASSUME_IPHONE =\n    goog.define('goog.userAgent.ASSUME_IPHONE', false);\n\n\n/**\n * @define {boolean} Whether the user agent is running on an iPad.\n */\ngoog.userAgent.ASSUME_IPAD = goog.define('goog.userAgent.ASSUME_IPAD', false);\n\n\n/**\n * @define {boolean} Whether the user agent is running on an iPod.\n */\ngoog.userAgent.ASSUME_IPOD = goog.define('goog.userAgent.ASSUME_IPOD', false);\n\n\n/**\n * @define {boolean} Whether the user agent is running on KaiOS.\n */\ngoog.userAgent.ASSUME_KAIOS = goog.define('goog.userAgent.ASSUME_KAIOS', false);\n\n\n/**\n * @type {boolean}\n * @private\n */\ngoog.userAgent.PLATFORM_KNOWN_ = goog.userAgent.ASSUME_MAC ||\n    goog.userAgent.ASSUME_WINDOWS || goog.userAgent.ASSUME_LINUX ||\n    goog.userAgent.ASSUME_X11 || goog.userAgent.ASSUME_ANDROID ||\n    goog.userAgent.ASSUME_IPHONE || goog.userAgent.ASSUME_IPAD ||\n    goog.userAgent.ASSUME_IPOD;\n\n\n/**\n * Whether the user agent is running on a Macintosh operating system.\n * @type {boolean}\n */\ngoog.userAgent.MAC = goog.userAgent.PLATFORM_KNOWN_ ?\n    goog.userAgent.ASSUME_MAC :\n    goog.labs.userAgent.platform.isMacintosh();\n\n\n/**\n * Whether the user agent is running on a Windows operating system.\n * @type {boolean}\n */\ngoog.userAgent.WINDOWS = goog.userAgent.PLATFORM_KNOWN_ ?\n    goog.userAgent.ASSUME_WINDOWS :\n    goog.labs.userAgent.platform.isWindows();\n\n\n/**\n * Whether the user agent is Linux per the legacy behavior of\n * goog.userAgent.LINUX, which considered ChromeOS to also be\n * Linux.\n * @return {boolean}\n * @private\n */\ngoog.userAgent.isLegacyLinux_ = function() {\n  return goog.labs.userAgent.platform.isLinux() ||\n      goog.labs.userAgent.platform.isChromeOS();\n};\n\n\n/**\n * Whether the user agent is running on a Linux operating system.\n *\n * Note that goog.userAgent.LINUX considers ChromeOS to be Linux,\n * while goog.labs.userAgent.platform considers ChromeOS and\n * Linux to be different OSes.\n *\n * @type {boolean}\n */\ngoog.userAgent.LINUX = goog.userAgent.PLATFORM_KNOWN_ ?\n    goog.userAgent.ASSUME_LINUX :\n    goog.userAgent.isLegacyLinux_();\n\n\n/**\n * @return {boolean} Whether the user agent is an X11 windowing system.\n * @private\n */\ngoog.userAgent.isX11_ = function() {\n  var navigator = goog.userAgent.getNavigatorTyped();\n  return !!navigator &&\n      goog.string.contains(navigator['appVersion'] || '', 'X11');\n};\n\n\n/**\n * Whether the user agent is running on a X11 windowing system.\n * @type {boolean}\n */\ngoog.userAgent.X11 = goog.userAgent.PLATFORM_KNOWN_ ?\n    goog.userAgent.ASSUME_X11 :\n    goog.userAgent.isX11_();\n\n\n/**\n * Whether the user agent is running on Android.\n * @type {boolean}\n */\ngoog.userAgent.ANDROID = goog.userAgent.PLATFORM_KNOWN_ ?\n    goog.userAgent.ASSUME_ANDROID :\n    goog.labs.userAgent.platform.isAndroid();\n\n\n/**\n * Whether the user agent is running on an iPhone.\n * @type {boolean}\n */\ngoog.userAgent.IPHONE = goog.userAgent.PLATFORM_KNOWN_ ?\n    goog.userAgent.ASSUME_IPHONE :\n    goog.labs.userAgent.platform.isIphone();\n\n\n/**\n * Whether the user agent is running on an iPad.\n * @type {boolean}\n */\ngoog.userAgent.IPAD = goog.userAgent.PLATFORM_KNOWN_ ?\n    goog.userAgent.ASSUME_IPAD :\n    goog.labs.userAgent.platform.isIpad();\n\n\n/**\n * Whether the user agent is running on an iPod.\n * @type {boolean}\n */\ngoog.userAgent.IPOD = goog.userAgent.PLATFORM_KNOWN_ ?\n    goog.userAgent.ASSUME_IPOD :\n    goog.labs.userAgent.platform.isIpod();\n\n\n/**\n * Whether the user agent is running on iOS.\n * @type {boolean}\n */\ngoog.userAgent.IOS = goog.userAgent.PLATFORM_KNOWN_ ?\n    (goog.userAgent.ASSUME_IPHONE || goog.userAgent.ASSUME_IPAD ||\n     goog.userAgent.ASSUME_IPOD) :\n    goog.labs.userAgent.platform.isIos();\n\n/**\n * Whether the user agent is running on KaiOS.\n * @type {boolean}\n */\ngoog.userAgent.KAIOS = goog.userAgent.PLATFORM_KNOWN_ ?\n    goog.userAgent.ASSUME_KAIOS :\n    goog.labs.userAgent.platform.isKaiOS();\n\n\n/**\n * @return {string} The string that describes the version number of the user\n *     agent.\n * @private\n */\ngoog.userAgent.determineVersion_ = function() {\n  // All browsers have different ways to detect the version and they all have\n  // different naming schemes.\n  // version is a string rather than a number because it may contain 'b', 'a',\n  // and so on.\n  var version = '';\n  var arr = goog.userAgent.getVersionRegexResult_();\n  if (arr) {\n    version = arr ? arr[1] : '';\n  }\n\n  if (goog.userAgent.IE) {\n    // IE9 can be in document mode 9 but be reporting an inconsistent user agent\n    // version.  If it is identifying as a version lower than 9 we take the\n    // documentMode as the version instead.  IE8 has similar behavior.\n    // It is recommended to set the X-UA-Compatible header to ensure that IE9\n    // uses documentMode 9.\n    var docMode = goog.userAgent.getDocumentMode_();\n    if (docMode != null && docMode > parseFloat(version)) {\n      return String(docMode);\n    }\n  }\n\n  return version;\n};\n\n\n/**\n * @return {?IArrayLike<string>|undefined} The version regex matches from\n *     parsing the user\n *     agent string. These regex statements must be executed inline so they can\n *     be compiled out by the closure compiler with the rest of the useragent\n *     detection logic when ASSUME_* is specified.\n * @private\n */\ngoog.userAgent.getVersionRegexResult_ = function() {\n  var userAgent = goog.userAgent.getUserAgentString();\n  if (goog.userAgent.GECKO) {\n    return /rv\\:([^\\);]+)(\\)|;)/.exec(userAgent);\n  }\n  if (goog.userAgent.EDGE) {\n    return /Edge\\/([\\d\\.]+)/.exec(userAgent);\n  }\n  if (goog.userAgent.IE) {\n    return /\\b(?:MSIE|rv)[: ]([^\\);]+)(\\)|;)/.exec(userAgent);\n  }\n  if (goog.userAgent.WEBKIT) {\n    // WebKit/125.4\n    return /WebKit\\/(\\S+)/.exec(userAgent);\n  }\n  if (goog.userAgent.OPERA) {\n    // If none of the above browsers were detected but the browser is Opera, the\n    // only string that is of interest is 'Version/<number>'.\n    return /(?:Version)[ \\/]?(\\S+)/.exec(userAgent);\n  }\n  return undefined;\n};\n\n\n/**\n * @return {number|undefined} Returns the document mode (for testing).\n * @private\n */\ngoog.userAgent.getDocumentMode_ = function() {\n  // NOTE(user): goog.userAgent may be used in context where there is no DOM.\n  var doc = goog.global['document'];\n  return doc ? doc['documentMode'] : undefined;\n};\n\n\n/**\n * The version of the user agent. This is a string because it might contain\n * 'b' (as in beta) as well as multiple dots.\n * @type {string}\n */\ngoog.userAgent.VERSION = goog.userAgent.determineVersion_();\n\n\n/**\n * Compares two version numbers.\n *\n * @param {string} v1 Version of first item.\n * @param {string} v2 Version of second item.\n *\n * @return {number}  1 if first argument is higher\n *                   0 if arguments are equal\n *                  -1 if second argument is higher.\n * @deprecated Use goog.string.compareVersions.\n */\ngoog.userAgent.compare = function(v1, v2) {\n  return goog.string.compareVersions(v1, v2);\n};\n\n\n/**\n * Cache for {@link goog.userAgent.isVersionOrHigher}.\n * Calls to compareVersions are surprisingly expensive and, as a browser's\n * version number is unlikely to change during a session, we cache the results.\n * @const\n * @private\n */\ngoog.userAgent.isVersionOrHigherCache_ = {};\n\n\n/**\n * Whether the user agent version is higher or the same as the given version.\n * NOTE: When checking the version numbers for Firefox and Safari, be sure to\n * use the engine's version, not the browser's version number.  For example,\n * Firefox 3.0 corresponds to Gecko 1.9 and Safari 3.0 to Webkit 522.11.\n * Opera and Internet Explorer versions match the product release number.<br>\n * @see <a href=\"http://en.wikipedia.org/wiki/Safari_version_history\">\n *     Webkit</a>\n * @see <a href=\"http://en.wikipedia.org/wiki/Gecko_engine\">Gecko</a>\n *\n * @param {string|number} version The version to check.\n * @return {boolean} Whether the user agent version is higher or the same as\n *     the given version.\n */\ngoog.userAgent.isVersionOrHigher = function(version) {\n  return goog.userAgent.ASSUME_ANY_VERSION ||\n      goog.reflect.cache(\n          goog.userAgent.isVersionOrHigherCache_, version, function() {\n            return goog.string.compareVersions(\n                       goog.userAgent.VERSION, version) >= 0;\n          });\n};\n\n\n/**\n * Deprecated alias to `goog.userAgent.isVersionOrHigher`.\n * @param {string|number} version The version to check.\n * @return {boolean} Whether the user agent version is higher or the same as\n *     the given version.\n * @deprecated Use goog.userAgent.isVersionOrHigher().\n */\ngoog.userAgent.isVersion = goog.userAgent.isVersionOrHigher;\n\n\n/**\n * Whether the IE effective document mode is higher or the same as the given\n * document mode version.\n * NOTE: Only for IE, return false for another browser.\n *\n * @param {number} documentMode The document mode version to check.\n * @return {boolean} Whether the IE effective document mode is higher or the\n *     same as the given version.\n */\ngoog.userAgent.isDocumentModeOrHigher = function(documentMode) {\n  return Number(goog.userAgent.DOCUMENT_MODE) >= documentMode;\n};\n\n\n/**\n * Deprecated alias to `goog.userAgent.isDocumentModeOrHigher`.\n * @param {number} version The version to check.\n * @return {boolean} Whether the IE effective document mode is higher or the\n *      same as the given version.\n * @deprecated Use goog.userAgent.isDocumentModeOrHigher().\n */\ngoog.userAgent.isDocumentMode = goog.userAgent.isDocumentModeOrHigher;\n\n\n/**\n * For IE version < 7, documentMode is undefined, so attempt to use the\n * CSS1Compat property to see if we are in standards mode. If we are in\n * standards mode, treat the browser version as the document mode. Otherwise,\n * IE is emulating version 5.\n *\n * NOTE(user): Support for IE < 7 is long gone, so this is now simplified.\n * It returns document.documentMode for IE and undefined for everything else.\n *\n * @type {number|undefined}\n * @const\n */\ngoog.userAgent.DOCUMENT_MODE = (function() {\n  var doc = goog.global['document'];\n  if (!doc || !goog.userAgent.IE) return undefined;\n  // This must be an IE user agent.\n  var documentMode = goog.userAgent.getDocumentMode_();\n  if (documentMode) return documentMode;\n  // The user agent version string begins with the major version.\n  // Parse the major version and truncate anything following.\n  var ieVersion = parseInt(goog.userAgent.VERSION, 10);\n  return ieVersion || undefined;\n})();\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Closure user agent detection (Browser).\n * @see <a href=\"http://www.useragentstring.com/\">User agent strings</a>\n * For more information on rendering engine, platform, or device see the other\n * sub-namespaces in goog.labs.userAgent, goog.labs.userAgent.platform,\n * goog.labs.userAgent.device respectively.)\n */\n\ngoog.provide('goog.labs.userAgent.browser');\n\ngoog.require('goog.array');\ngoog.require('goog.labs.userAgent.util');\ngoog.require('goog.object');\ngoog.require('goog.string.internal');\n\n\n// TODO(nnaze): Refactor to remove excessive exclusion logic in matching\n// functions.\n\n\n/**\n * @return {boolean} Whether the user's browser is Opera.  Note: Chromium\n *     based Opera (Opera 15+) is detected as Chrome to avoid unnecessary\n *     special casing.\n * @private\n */\ngoog.labs.userAgent.browser.matchOpera_ = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Opera');\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is IE.\n * @private\n */\ngoog.labs.userAgent.browser.matchIE_ = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Trident') ||\n      goog.labs.userAgent.util.matchUserAgent('MSIE');\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is Edge. This refers to EdgeHTML\n * based Edge.\n * @private\n */\ngoog.labs.userAgent.browser.matchEdgeHtml_ = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Edge');\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is Chromium based Edge.\n * @private\n */\ngoog.labs.userAgent.browser.matchEdgeChromium_ = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Edg/');\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is Chromium based Opera.\n * @private\n */\ngoog.labs.userAgent.browser.matchOperaChromium_ = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('OPR');\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is Firefox.\n * @private\n */\ngoog.labs.userAgent.browser.matchFirefox_ = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Firefox') ||\n      goog.labs.userAgent.util.matchUserAgent('FxiOS');\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is Safari.\n * @private\n */\ngoog.labs.userAgent.browser.matchSafari_ = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Safari') &&\n      !(goog.labs.userAgent.browser.matchChrome_() ||\n        goog.labs.userAgent.browser.matchCoast_() ||\n        goog.labs.userAgent.browser.matchOpera_() ||\n        goog.labs.userAgent.browser.matchEdgeHtml_() ||\n        goog.labs.userAgent.browser.matchEdgeChromium_() ||\n        goog.labs.userAgent.browser.matchOperaChromium_() ||\n        goog.labs.userAgent.browser.matchFirefox_() ||\n        goog.labs.userAgent.browser.isSilk() ||\n        goog.labs.userAgent.util.matchUserAgent('Android'));\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is Coast (Opera's Webkit-based\n *     iOS browser).\n * @private\n */\ngoog.labs.userAgent.browser.matchCoast_ = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Coast');\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is iOS Webview.\n * @private\n */\ngoog.labs.userAgent.browser.matchIosWebview_ = function() {\n  'use strict';\n  // iOS Webview does not show up as Chrome or Safari. Also check for Opera's\n  // WebKit-based iOS browser, Coast.\n  return (goog.labs.userAgent.util.matchUserAgent('iPad') ||\n          goog.labs.userAgent.util.matchUserAgent('iPhone')) &&\n      !goog.labs.userAgent.browser.matchSafari_() &&\n      !goog.labs.userAgent.browser.matchChrome_() &&\n      !goog.labs.userAgent.browser.matchCoast_() &&\n      !goog.labs.userAgent.browser.matchFirefox_() &&\n      goog.labs.userAgent.util.matchUserAgent('AppleWebKit');\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is any Chromium browser. This\n * returns true for Chrome, Opera 15+, and Edge Chromium.\n * @private\n */\ngoog.labs.userAgent.browser.matchChrome_ = function() {\n  'use strict';\n  return (goog.labs.userAgent.util.matchUserAgent('Chrome') ||\n          goog.labs.userAgent.util.matchUserAgent('CriOS')) &&\n      !goog.labs.userAgent.browser.matchEdgeHtml_();\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is the Android browser.\n * @private\n */\ngoog.labs.userAgent.browser.matchAndroidBrowser_ = function() {\n  'use strict';\n  // Android can appear in the user agent string for Chrome on Android.\n  // This is not the Android standalone browser if it does.\n  return goog.labs.userAgent.util.matchUserAgent('Android') &&\n      !(goog.labs.userAgent.browser.isChrome() ||\n        goog.labs.userAgent.browser.isFirefox() ||\n        goog.labs.userAgent.browser.isOpera() ||\n        goog.labs.userAgent.browser.isSilk());\n};\n\n\n/**\n * @return {boolean} Whether the user's browser is Opera.\n */\ngoog.labs.userAgent.browser.isOpera = goog.labs.userAgent.browser.matchOpera_;\n\n\n/**\n * @return {boolean} Whether the user's browser is IE.\n */\ngoog.labs.userAgent.browser.isIE = goog.labs.userAgent.browser.matchIE_;\n\n\n/**\n * @return {boolean} Whether the user's browser is EdgeHTML based Edge.\n */\ngoog.labs.userAgent.browser.isEdge = goog.labs.userAgent.browser.matchEdgeHtml_;\n\n\n/**\n * @return {boolean} Whether the user's browser is Chromium based Edge.\n */\ngoog.labs.userAgent.browser.isEdgeChromium =\n    goog.labs.userAgent.browser.matchEdgeChromium_;\n\n/**\n * @return {boolean} Whether the user's browser is Chromium based Opera.\n */\ngoog.labs.userAgent.browser.isOperaChromium =\n    goog.labs.userAgent.browser.matchOperaChromium_;\n\n/**\n * @return {boolean} Whether the user's browser is Firefox.\n */\ngoog.labs.userAgent.browser.isFirefox =\n    goog.labs.userAgent.browser.matchFirefox_;\n\n\n/**\n * @return {boolean} Whether the user's browser is Safari.\n */\ngoog.labs.userAgent.browser.isSafari = goog.labs.userAgent.browser.matchSafari_;\n\n\n/**\n * @return {boolean} Whether the user's browser is Coast (Opera's Webkit-based\n *     iOS browser).\n */\ngoog.labs.userAgent.browser.isCoast = goog.labs.userAgent.browser.matchCoast_;\n\n\n/**\n * @return {boolean} Whether the user's browser is iOS Webview.\n */\ngoog.labs.userAgent.browser.isIosWebview =\n    goog.labs.userAgent.browser.matchIosWebview_;\n\n\n/**\n * @return {boolean} Whether the user's browser is any Chromium based browser (\n * Chrome, Blink-based Opera (15+) and Edge Chromium).\n */\ngoog.labs.userAgent.browser.isChrome = goog.labs.userAgent.browser.matchChrome_;\n\n\n/**\n * @return {boolean} Whether the user's browser is the Android browser.\n */\ngoog.labs.userAgent.browser.isAndroidBrowser =\n    goog.labs.userAgent.browser.matchAndroidBrowser_;\n\n\n/**\n * For more information, see:\n * http://docs.aws.amazon.com/silk/latest/developerguide/user-agent.html\n * @return {boolean} Whether the user's browser is Silk.\n */\ngoog.labs.userAgent.browser.isSilk = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Silk');\n};\n\n\n/**\n * @return {string} The browser version or empty string if version cannot be\n *     determined. Note that for Internet Explorer, this returns the version of\n *     the browser, not the version of the rendering engine. (IE 8 in\n *     compatibility mode will return 8.0 rather than 7.0. To determine the\n *     rendering engine version, look at document.documentMode instead. See\n *     http://msdn.microsoft.com/en-us/library/cc196988(v=vs.85).aspx for more\n *     details.)\n */\ngoog.labs.userAgent.browser.getVersion = function() {\n  'use strict';\n  var userAgentString = goog.labs.userAgent.util.getUserAgent();\n  // Special case IE since IE's version is inside the parenthesis and\n  // without the '/'.\n  if (goog.labs.userAgent.browser.isIE()) {\n    return goog.labs.userAgent.browser.getIEVersion_(userAgentString);\n  }\n\n  var versionTuples =\n      goog.labs.userAgent.util.extractVersionTuples(userAgentString);\n\n  // Construct a map for easy lookup.\n  var versionMap = {};\n  goog.array.forEach(versionTuples, function(tuple) {\n    'use strict';\n    // Note that the tuple is of length three, but we only care about the\n    // first two.\n    var key = tuple[0];\n    var value = tuple[1];\n    versionMap[key] = value;\n  });\n\n  var versionMapHasKey = goog.partial(goog.object.containsKey, versionMap);\n\n  // Gives the value with the first key it finds, otherwise empty string.\n  function lookUpValueWithKeys(keys) {\n    var key = goog.array.find(keys, versionMapHasKey);\n    return versionMap[key] || '';\n  }\n\n  // Check Opera before Chrome since Opera 15+ has \"Chrome\" in the string.\n  // See\n  // http://my.opera.com/ODIN/blog/2013/07/15/opera-user-agent-strings-opera-15-and-beyond\n  if (goog.labs.userAgent.browser.isOpera()) {\n    // Opera 10 has Version/10.0 but Opera/9.8, so look for \"Version\" first.\n    // Opera uses 'OPR' for more recent UAs.\n    return lookUpValueWithKeys(['Version', 'Opera']);\n  }\n\n  // Check Edge before Chrome since it has Chrome in the string.\n  if (goog.labs.userAgent.browser.isEdge()) {\n    return lookUpValueWithKeys(['Edge']);\n  }\n\n  // Check Chromium Edge before Chrome since it has Chrome in the string.\n  if (goog.labs.userAgent.browser.isEdgeChromium()) {\n    return lookUpValueWithKeys(['Edg']);\n  }\n\n  if (goog.labs.userAgent.browser.isChrome()) {\n    return lookUpValueWithKeys(['Chrome', 'CriOS', 'HeadlessChrome']);\n  }\n\n  // Usually products browser versions are in the third tuple after \"Mozilla\"\n  // and the engine.\n  var tuple = versionTuples[2];\n  return tuple && tuple[1] || '';\n};\n\n\n/**\n * @param {string|number} version The version to check.\n * @return {boolean} Whether the browser version is higher or the same as the\n *     given version.\n */\ngoog.labs.userAgent.browser.isVersionOrHigher = function(version) {\n  'use strict';\n  return goog.string.internal.compareVersions(\n             goog.labs.userAgent.browser.getVersion(), version) >= 0;\n};\n\n\n/**\n * Determines IE version. More information:\n * http://msdn.microsoft.com/en-us/library/ie/bg182625(v=vs.85).aspx#uaString\n * http://msdn.microsoft.com/en-us/library/hh869301(v=vs.85).aspx\n * http://blogs.msdn.com/b/ie/archive/2010/03/23/introducing-ie9-s-user-agent-string.aspx\n * http://blogs.msdn.com/b/ie/archive/2009/01/09/the-internet-explorer-8-user-agent-string-updated-edition.aspx\n *\n * @param {string} userAgent the User-Agent.\n * @return {string}\n * @private\n */\ngoog.labs.userAgent.browser.getIEVersion_ = function(userAgent) {\n  'use strict';\n  // IE11 may identify itself as MSIE 9.0 or MSIE 10.0 due to an IE 11 upgrade\n  // bug. Example UA:\n  // Mozilla/5.0 (MSIE 9.0; Windows NT 6.1; WOW64; Trident/7.0; rv:11.0)\n  // like Gecko.\n  // See http://www.whatismybrowser.com/developers/unknown-user-agent-fragments.\n  var rv = /rv: *([\\d\\.]*)/.exec(userAgent);\n  if (rv && rv[1]) {\n    return rv[1];\n  }\n\n  var version = '';\n  var msie = /MSIE +([\\d\\.]+)/.exec(userAgent);\n  if (msie && msie[1]) {\n    // IE in compatibility mode usually identifies itself as MSIE 7.0; in this\n    // case, use the Trident version to determine the version of IE. For more\n    // details, see the links above.\n    var tridentVersion = /Trident\\/(\\d.\\d)/.exec(userAgent);\n    if (msie[1] == '7.0') {\n      if (tridentVersion && tridentVersion[1]) {\n        switch (tridentVersion[1]) {\n          case '4.0':\n            version = '8.0';\n            break;\n          case '5.0':\n            version = '9.0';\n            break;\n          case '6.0':\n            version = '10.0';\n            break;\n          case '7.0':\n            version = '11.0';\n            break;\n        }\n      } else {\n        version = '7.0';\n      }\n    } else {\n      version = msie[1];\n    }\n  }\n  return version;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Closure user agent detection.\n * @see http://en.wikipedia.org/wiki/User_agent\n * For more information on browser brand, platform, or device see the other\n * sub-namespaces in goog.labs.userAgent (browser, platform, and device).\n */\n\ngoog.provide('goog.labs.userAgent.engine');\n\ngoog.require('goog.array');\ngoog.require('goog.labs.userAgent.util');\ngoog.require('goog.string');\n\n\n/**\n * @return {boolean} Whether the rendering engine is Presto.\n */\ngoog.labs.userAgent.engine.isPresto = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Presto');\n};\n\n\n/**\n * @return {boolean} Whether the rendering engine is Trident.\n */\ngoog.labs.userAgent.engine.isTrident = function() {\n  'use strict';\n  // IE only started including the Trident token in IE8.\n  return goog.labs.userAgent.util.matchUserAgent('Trident') ||\n      goog.labs.userAgent.util.matchUserAgent('MSIE');\n};\n\n\n/**\n * @return {boolean} Whether the rendering engine is EdgeHTML.\n */\ngoog.labs.userAgent.engine.isEdge = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Edge');\n};\n\n\n/**\n * @return {boolean} Whether the rendering engine is WebKit. This will return\n * true for Chrome, Blink-based Opera (15+), Edge Chromium and Safari.\n */\ngoog.labs.userAgent.engine.isWebKit = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgentIgnoreCase('WebKit') &&\n      !goog.labs.userAgent.engine.isEdge();\n};\n\n\n/**\n * @return {boolean} Whether the rendering engine is Gecko.\n */\ngoog.labs.userAgent.engine.isGecko = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Gecko') &&\n      !goog.labs.userAgent.engine.isWebKit() &&\n      !goog.labs.userAgent.engine.isTrident() &&\n      !goog.labs.userAgent.engine.isEdge();\n};\n\n\n/**\n * @return {string} The rendering engine's version or empty string if version\n *     can't be determined.\n */\ngoog.labs.userAgent.engine.getVersion = function() {\n  'use strict';\n  var userAgentString = goog.labs.userAgent.util.getUserAgent();\n  if (userAgentString) {\n    var tuples = goog.labs.userAgent.util.extractVersionTuples(userAgentString);\n\n    var engineTuple = goog.labs.userAgent.engine.getEngineTuple_(tuples);\n    if (engineTuple) {\n      // In Gecko, the version string is either in the browser info or the\n      // Firefox version.  See Gecko user agent string reference:\n      // http://goo.gl/mULqa\n      if (engineTuple[0] == 'Gecko') {\n        return goog.labs.userAgent.engine.getVersionForKey_(tuples, 'Firefox');\n      }\n\n      return engineTuple[1];\n    }\n\n    // MSIE has only one version identifier, and the Trident version is\n    // specified in the parenthetical. IE Edge is covered in the engine tuple\n    // detection.\n    var browserTuple = tuples[0];\n    var info;\n    if (browserTuple && (info = browserTuple[2])) {\n      var match = /Trident\\/([^\\s;]+)/.exec(info);\n      if (match) {\n        return match[1];\n      }\n    }\n  }\n  return '';\n};\n\n\n/**\n * @param {!Array<!Array<string>>} tuples Extracted version tuples.\n * @return {!Array<string>|undefined} The engine tuple or undefined if not\n *     found.\n * @private\n */\ngoog.labs.userAgent.engine.getEngineTuple_ = function(tuples) {\n  'use strict';\n  if (!goog.labs.userAgent.engine.isEdge()) {\n    return tuples[1];\n  }\n  for (var i = 0; i < tuples.length; i++) {\n    var tuple = tuples[i];\n    if (tuple[0] == 'Edge') {\n      return tuple;\n    }\n  }\n};\n\n\n/**\n * @param {string|number} version The version to check.\n * @return {boolean} Whether the rendering engine version is higher or the same\n *     as the given version.\n */\ngoog.labs.userAgent.engine.isVersionOrHigher = function(version) {\n  'use strict';\n  return goog.string.compareVersions(\n             goog.labs.userAgent.engine.getVersion(), version) >= 0;\n};\n\n\n/**\n * @param {!Array<!Array<string>>} tuples Version tuples.\n * @param {string} key The key to look for.\n * @return {string} The version string of the given key, if present.\n *     Otherwise, the empty string.\n * @private\n */\ngoog.labs.userAgent.engine.getVersionForKey_ = function(tuples, key) {\n  'use strict';\n  // TODO(nnaze): Move to util if useful elsewhere.\n\n  var pair = goog.array.find(tuples, function(pair) {\n    'use strict';\n    return key == pair[0];\n  });\n\n  return pair && pair[1] || '';\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Browser capability checks for the dom package.\n */\n\n\ngoog.provide('goog.dom.BrowserFeature');\n\ngoog.require('goog.userAgent');\n\n\n/**\n * @define {boolean} Whether we know at compile time that the browser doesn't\n * support OffscreenCanvas.\n */\ngoog.dom.BrowserFeature.ASSUME_NO_OFFSCREEN_CANVAS =\n    goog.define('goog.dom.ASSUME_NO_OFFSCREEN_CANVAS', false);\n\n/**\n * @define {boolean} Whether we know at compile time that the browser supports\n * all OffscreenCanvas contexts.\n */\n// TODO(user): Eventually this should default to \"FEATURESET_YEAR >= 202X\".\ngoog.dom.BrowserFeature.ASSUME_OFFSCREEN_CANVAS =\n    goog.define('goog.dom.ASSUME_OFFSCREEN_CANVAS', false);\n\n/**\n * Detects if a particular OffscreenCanvas context is supported.\n * @param {string} contextName name of the context to test.\n * @return {boolean} Whether the browser supports this OffscreenCanvas context.\n * @private\n */\ngoog.dom.BrowserFeature.detectOffscreenCanvas_ = function(contextName) {\n  // This code only gets removed because we forced @nosideeffects on\n  // the functions. See: b/138802376\n  try {\n    return Boolean(new self.OffscreenCanvas(0, 0).getContext(contextName));\n  } catch (ex) {\n  }\n  return false;\n};\n\n/**\n * Whether the browser supports OffscreenCanvas 2D context.\n * @const {boolean}\n */\ngoog.dom.BrowserFeature.OFFSCREEN_CANVAS_2D =\n    !goog.dom.BrowserFeature.ASSUME_NO_OFFSCREEN_CANVAS &&\n    (goog.dom.BrowserFeature.ASSUME_OFFSCREEN_CANVAS ||\n     goog.dom.BrowserFeature.detectOffscreenCanvas_('2d'));\n\n/**\n * Whether attributes 'name' and 'type' can be added to an element after it's\n * created. False in Internet Explorer prior to version 9.\n * @const {boolean}\n */\ngoog.dom.BrowserFeature.CAN_ADD_NAME_OR_TYPE_ATTRIBUTES =\n    !goog.userAgent.IE || goog.userAgent.isDocumentModeOrHigher(9);\n\n/**\n * Whether we can use element.children to access an element's Element\n * children. Available since Gecko 1.9.1, IE 9. (IE<9 also includes comment\n * nodes in the collection.)\n * @const {boolean}\n */\ngoog.dom.BrowserFeature.CAN_USE_CHILDREN_ATTRIBUTE =\n    !goog.userAgent.GECKO && !goog.userAgent.IE ||\n    goog.userAgent.IE && goog.userAgent.isDocumentModeOrHigher(9) ||\n    goog.userAgent.GECKO && goog.userAgent.isVersionOrHigher('1.9.1');\n\n/**\n * Opera, Safari 3, and Internet Explorer 9 all support innerText but they\n * include text nodes in script and style tags. Not document-mode-dependent.\n * @const {boolean}\n */\ngoog.dom.BrowserFeature.CAN_USE_INNER_TEXT =\n    (goog.userAgent.IE && !goog.userAgent.isVersionOrHigher('9'));\n\n/**\n * MSIE, Opera, and Safari>=4 support element.parentElement to access an\n * element's parent if it is an Element.\n * @const {boolean}\n */\ngoog.dom.BrowserFeature.CAN_USE_PARENT_ELEMENT_PROPERTY =\n    goog.userAgent.IE || goog.userAgent.OPERA || goog.userAgent.WEBKIT;\n\n/**\n * Whether NoScope elements need a scoped element written before them in\n * innerHTML.\n * MSDN: http://msdn.microsoft.com/en-us/library/ms533897(VS.85).aspx#1\n * @const {boolean}\n */\ngoog.dom.BrowserFeature.INNER_HTML_NEEDS_SCOPED_ELEMENT = goog.userAgent.IE;\n\n/**\n * Whether we use legacy IE range API.\n * @const {boolean}\n */\ngoog.dom.BrowserFeature.LEGACY_IE_RANGES =\n    goog.userAgent.IE && !goog.userAgent.isDocumentModeOrHigher(9);\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Utilities for manipulating the browser's Document Object Model\n * Inspiration taken *heavily* from mochikit (http://mochikit.com/).\n *\n * You can use {@link goog.dom.DomHelper} to create new dom helpers that refer\n * to a different document object.  This is useful if you are working with\n * frames or multiple windows.\n *\n * @suppress {strictMissingProperties}\n */\n\n\n// TODO(arv): Rename/refactor getTextContent and getRawTextContent. The problem\n// is that getTextContent should mimic the DOM3 textContent. We should add a\n// getInnerText (or getText) which tries to return the visible text, innerText.\n\n\ngoog.provide('goog.dom');\ngoog.provide('goog.dom.Appendable');\ngoog.provide('goog.dom.DomHelper');\n\ngoog.require('goog.array');\ngoog.require('goog.asserts');\ngoog.require('goog.dom.BrowserFeature');\ngoog.require('goog.dom.NodeType');\ngoog.require('goog.dom.TagName');\ngoog.require('goog.dom.safe');\ngoog.require('goog.html.SafeHtml');\ngoog.require('goog.html.uncheckedconversions');\ngoog.require('goog.math.Coordinate');\ngoog.require('goog.math.Size');\ngoog.require('goog.object');\ngoog.require('goog.string');\ngoog.require('goog.string.Const');\ngoog.require('goog.string.Unicode');\ngoog.require('goog.userAgent');\n\n\n/**\n * @define {boolean} Whether we know at compile time that the browser is in\n * quirks mode.\n */\ngoog.dom.ASSUME_QUIRKS_MODE = goog.define('goog.dom.ASSUME_QUIRKS_MODE', false);\n\n\n/**\n * @define {boolean} Whether we know at compile time that the browser is in\n * standards compliance mode.\n */\ngoog.dom.ASSUME_STANDARDS_MODE =\n    goog.define('goog.dom.ASSUME_STANDARDS_MODE', false);\n\n\n/**\n * Whether we know the compatibility mode at compile time.\n * @type {boolean}\n * @private\n */\ngoog.dom.COMPAT_MODE_KNOWN_ =\n    goog.dom.ASSUME_QUIRKS_MODE || goog.dom.ASSUME_STANDARDS_MODE;\n\n\n/**\n * Gets the DomHelper object for the document where the element resides.\n * @param {(Node|Window)=} opt_element If present, gets the DomHelper for this\n *     element.\n * @return {!goog.dom.DomHelper} The DomHelper.\n */\ngoog.dom.getDomHelper = function(opt_element) {\n  return opt_element ?\n      new goog.dom.DomHelper(goog.dom.getOwnerDocument(opt_element)) :\n      (goog.dom.defaultDomHelper_ ||\n       (goog.dom.defaultDomHelper_ = new goog.dom.DomHelper()));\n};\n\n\n/**\n * Cached default DOM helper.\n * @type {!goog.dom.DomHelper|undefined}\n * @private\n */\ngoog.dom.defaultDomHelper_;\n\n\n/**\n * Gets the document object being used by the dom library.\n * @return {!Document} Document object.\n */\ngoog.dom.getDocument = function() {\n  return document;\n};\n\n\n/**\n * Gets an element from the current document by element id.\n *\n * If an Element is passed in, it is returned.\n *\n * @param {string|Element} element Element ID or a DOM node.\n * @return {Element} The element with the given ID, or the node passed in.\n */\ngoog.dom.getElement = function(element) {\n  return goog.dom.getElementHelper_(document, element);\n};\n\n\n/**\n * Gets an element by id from the given document (if present).\n * If an element is given, it is returned.\n * @param {!Document} doc\n * @param {string|Element} element Element ID or a DOM node.\n * @return {Element} The resulting element.\n * @private\n */\ngoog.dom.getElementHelper_ = function(doc, element) {\n  return typeof element === 'string' ? doc.getElementById(element) : element;\n};\n\n\n/**\n * Gets an element by id, asserting that the element is found.\n *\n * This is used when an element is expected to exist, and should fail with\n * an assertion error if it does not (if assertions are enabled).\n *\n * @param {string} id Element ID.\n * @return {!Element} The element with the given ID, if it exists.\n */\ngoog.dom.getRequiredElement = function(id) {\n  return goog.dom.getRequiredElementHelper_(document, id);\n};\n\n\n/**\n * Helper function for getRequiredElementHelper functions, both static and\n * on DomHelper.  Asserts the element with the given id exists.\n * @param {!Document} doc\n * @param {string} id\n * @return {!Element} The element with the given ID, if it exists.\n * @private\n */\ngoog.dom.getRequiredElementHelper_ = function(doc, id) {\n  // To prevent users passing in Elements as is permitted in getElement().\n  goog.asserts.assertString(id);\n  var element = goog.dom.getElementHelper_(doc, id);\n  element =\n      goog.asserts.assertElement(element, 'No element found with id: ' + id);\n  return element;\n};\n\n\n/**\n * Alias for getElement.\n * @param {string|Element} element Element ID or a DOM node.\n * @return {Element} The element with the given ID, or the node passed in.\n * @deprecated Use {@link goog.dom.getElement} instead.\n */\ngoog.dom.$ = goog.dom.getElement;\n\n\n/**\n * Gets elements by tag name.\n * @param {!goog.dom.TagName<T>} tagName\n * @param {(!Document|!Element)=} opt_parent Parent element or document where to\n *     look for elements. Defaults to document.\n * @return {!NodeList<R>} List of elements. The members of the list are\n *     {!Element} if tagName is not a member of goog.dom.TagName or more\n *     specific types if it is (e.g. {!HTMLAnchorElement} for\n *     goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n */\ngoog.dom.getElementsByTagName = function(tagName, opt_parent) {\n  var parent = opt_parent || document;\n  return parent.getElementsByTagName(String(tagName));\n};\n\n\n/**\n * Looks up elements by both tag and class name, using browser native functions\n * (`querySelectorAll`, `getElementsByTagName` or\n * `getElementsByClassName`) where possible. This function\n * is a useful, if limited, way of collecting a list of DOM elements\n * with certain characteristics.  `querySelectorAll` offers a\n * more powerful and general solution which allows matching on CSS3\n * selector expressions.\n *\n * Note that tag names are case sensitive in the SVG namespace, and this\n * function converts opt_tag to uppercase for comparisons. For queries in the\n * SVG namespace you should use querySelector or querySelectorAll instead.\n * https://bugzilla.mozilla.org/show_bug.cgi?id=963870\n * https://bugs.webkit.org/show_bug.cgi?id=83438\n *\n * @see {https://developer.mozilla.org/en-US/docs/Web/API/Document/querySelectorAll}\n *\n * @param {(string|?goog.dom.TagName<T>)=} opt_tag Element tag name.\n * @param {?string=} opt_class Optional class name.\n * @param {(Document|Element)=} opt_el Optional element to look in.\n * @return {!IArrayLike<R>} Array-like list of elements (only a length property\n *     and numerical indices are guaranteed to exist). The members of the array\n *     are {!Element} if opt_tag is not a member of goog.dom.TagName or more\n *     specific types if it is (e.g. {!HTMLAnchorElement} for\n *     goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n */\ngoog.dom.getElementsByTagNameAndClass = function(opt_tag, opt_class, opt_el) {\n  return goog.dom.getElementsByTagNameAndClass_(\n      document, opt_tag, opt_class, opt_el);\n};\n\n\n/**\n * Gets the first element matching the tag and the class.\n *\n * @param {(string|?goog.dom.TagName<T>)=} opt_tag Element tag name.\n * @param {?string=} opt_class Optional class name.\n * @param {(Document|Element)=} opt_el Optional element to look in.\n * @return {?R} Reference to a DOM node. The return type is {?Element} if\n *     tagName is a string or a more specific type if it is a member of\n *     goog.dom.TagName (e.g. {?HTMLAnchorElement} for goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n */\ngoog.dom.getElementByTagNameAndClass = function(opt_tag, opt_class, opt_el) {\n  return goog.dom.getElementByTagNameAndClass_(\n      document, opt_tag, opt_class, opt_el);\n};\n\n\n/**\n * Returns a static, array-like list of the elements with the provided\n * className.\n *\n * @param {string} className the name of the class to look for.\n * @param {(Document|Element)=} opt_el Optional element to look in.\n * @return {!IArrayLike<!Element>} The items found with the class name provided.\n */\ngoog.dom.getElementsByClass = function(className, opt_el) {\n  var parent = opt_el || document;\n  if (goog.dom.canUseQuerySelector_(parent)) {\n    return parent.querySelectorAll('.' + className);\n  }\n  return goog.dom.getElementsByTagNameAndClass_(\n      document, '*', className, opt_el);\n};\n\n\n/**\n * Returns the first element with the provided className.\n *\n * @param {string} className the name of the class to look for.\n * @param {Element|Document=} opt_el Optional element to look in.\n * @return {Element} The first item with the class name provided.\n */\ngoog.dom.getElementByClass = function(className, opt_el) {\n  var parent = opt_el || document;\n  var retVal = null;\n  if (parent.getElementsByClassName) {\n    retVal = parent.getElementsByClassName(className)[0];\n  } else {\n    retVal =\n        goog.dom.getElementByTagNameAndClass_(document, '*', className, opt_el);\n  }\n  return retVal || null;\n};\n\n\n/**\n * Ensures an element with the given className exists, and then returns the\n * first element with the provided className.\n *\n * @param {string} className the name of the class to look for.\n * @param {!Element|!Document=} opt_root Optional element or document to look\n *     in.\n * @return {!Element} The first item with the class name provided.\n * @throws {goog.asserts.AssertionError} Thrown if no element is found.\n */\ngoog.dom.getRequiredElementByClass = function(className, opt_root) {\n  var retValue = goog.dom.getElementByClass(className, opt_root);\n  return goog.asserts.assert(\n      retValue, 'No element found with className: ' + className);\n};\n\n\n/**\n * Prefer the standardized (http://www.w3.org/TR/selectors-api/), native and\n * fast W3C Selectors API.\n * @param {!(Element|Document)} parent The parent document object.\n * @return {boolean} whether or not we can use parent.querySelector* APIs.\n * @private\n */\ngoog.dom.canUseQuerySelector_ = function(parent) {\n  return !!(parent.querySelectorAll && parent.querySelector);\n};\n\n\n/**\n * Helper for `getElementsByTagNameAndClass`.\n * @param {!Document} doc The document to get the elements in.\n * @param {(string|?goog.dom.TagName<T>)=} opt_tag Element tag name.\n * @param {?string=} opt_class Optional class name.\n * @param {(Document|Element)=} opt_el Optional element to look in.\n * @return {!IArrayLike<R>} Array-like list of elements (only a length property\n *     and numerical indices are guaranteed to exist). The members of the array\n *     are {!Element} if opt_tag is not a member of goog.dom.TagName or more\n *     specific types if it is (e.g. {!HTMLAnchorElement} for\n *     goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n * @private\n */\ngoog.dom.getElementsByTagNameAndClass_ = function(\n    doc, opt_tag, opt_class, opt_el) {\n  var parent = opt_el || doc;\n  var tagName =\n      (opt_tag && opt_tag != '*') ? String(opt_tag).toUpperCase() : '';\n\n  if (goog.dom.canUseQuerySelector_(parent) && (tagName || opt_class)) {\n    var query = tagName + (opt_class ? '.' + opt_class : '');\n    return parent.querySelectorAll(query);\n  }\n\n  // Use the native getElementsByClassName if available, under the assumption\n  // that even when the tag name is specified, there will be fewer elements to\n  // filter through when going by class than by tag name\n  if (opt_class && parent.getElementsByClassName) {\n    var els = parent.getElementsByClassName(opt_class);\n\n    if (tagName) {\n      var arrayLike = {};\n      var len = 0;\n\n      // Filter for specific tags if requested.\n      for (var i = 0, el; el = els[i]; i++) {\n        if (tagName == el.nodeName) {\n          arrayLike[len++] = el;\n        }\n      }\n      arrayLike.length = len;\n\n      return /** @type {!IArrayLike<!Element>} */ (arrayLike);\n    } else {\n      return els;\n    }\n  }\n\n  var els = parent.getElementsByTagName(tagName || '*');\n\n  if (opt_class) {\n    var arrayLike = {};\n    var len = 0;\n    for (var i = 0, el; el = els[i]; i++) {\n      var className = el.className;\n      // Check if className has a split function since SVG className does not.\n      if (typeof className.split == 'function' &&\n          goog.array.contains(className.split(/\\s+/), opt_class)) {\n        arrayLike[len++] = el;\n      }\n    }\n    arrayLike.length = len;\n    return /** @type {!IArrayLike<!Element>} */ (arrayLike);\n  } else {\n    return els;\n  }\n};\n\n\n/**\n * Helper for goog.dom.getElementByTagNameAndClass.\n *\n * @param {!Document} doc The document to get the elements in.\n * @param {(string|?goog.dom.TagName<T>)=} opt_tag Element tag name.\n * @param {?string=} opt_class Optional class name.\n * @param {(Document|Element)=} opt_el Optional element to look in.\n * @return {?R} Reference to a DOM node. The return type is {?Element} if\n *     tagName is a string or a more specific type if it is a member of\n *     goog.dom.TagName (e.g. {?HTMLAnchorElement} for goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n * @private\n */\ngoog.dom.getElementByTagNameAndClass_ = function(\n    doc, opt_tag, opt_class, opt_el) {\n  var parent = opt_el || doc;\n  var tag = (opt_tag && opt_tag != '*') ? String(opt_tag).toUpperCase() : '';\n  if (goog.dom.canUseQuerySelector_(parent) && (tag || opt_class)) {\n    return parent.querySelector(tag + (opt_class ? '.' + opt_class : ''));\n  }\n  var elements =\n      goog.dom.getElementsByTagNameAndClass_(doc, opt_tag, opt_class, opt_el);\n  return elements[0] || null;\n};\n\n\n\n/**\n * Alias for `getElementsByTagNameAndClass`.\n * @param {(string|?goog.dom.TagName<T>)=} opt_tag Element tag name.\n * @param {?string=} opt_class Optional class name.\n * @param {Element=} opt_el Optional element to look in.\n * @return {!IArrayLike<R>} Array-like list of elements (only a length property\n *     and numerical indices are guaranteed to exist). The members of the array\n *     are {!Element} if opt_tag is not a member of goog.dom.TagName or more\n *     specific types if it is (e.g. {!HTMLAnchorElement} for\n *     goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n * @deprecated Use {@link goog.dom.getElementsByTagNameAndClass} instead.\n */\ngoog.dom.$$ = goog.dom.getElementsByTagNameAndClass;\n\n\n/**\n * Sets multiple properties, and sometimes attributes, on an element. Note that\n * properties are simply object properties on the element instance, while\n * attributes are visible in the DOM. Many properties map to attributes with the\n * same names, some with different names, and there are also unmappable cases.\n *\n * This method sets properties by default (which means that custom attributes\n * are not supported). These are the exeptions (some of which is legacy):\n * - \"style\": Even though this is an attribute name, it is translated to a\n *   property, \"style.cssText\". Note that this property sanitizes and formats\n *   its value, unlike the attribute.\n * - \"class\": This is an attribute name, it is translated to the \"className\"\n *   property.\n * - \"for\": This is an attribute name, it is translated to the \"htmlFor\"\n *   property.\n * - Entries in {@see goog.dom.DIRECT_ATTRIBUTE_MAP_} are set as attributes,\n *   this is probably due to browser quirks.\n * - \"aria-*\", \"data-*\": Always set as attributes, they have no property\n *   counterparts.\n *\n * @param {Element} element DOM node to set properties on.\n * @param {Object} properties Hash of property:value pairs.\n *     Property values can be strings or goog.string.TypedString values (such as\n *     goog.html.SafeUrl).\n */\ngoog.dom.setProperties = function(element, properties) {\n  goog.object.forEach(properties, function(val, key) {\n    if (val && typeof val == 'object' && val.implementsGoogStringTypedString) {\n      val = val.getTypedStringValue();\n    }\n    if (key == 'style') {\n      element.style.cssText = val;\n    } else if (key == 'class') {\n      element.className = val;\n    } else if (key == 'for') {\n      element.htmlFor = val;\n    } else if (goog.dom.DIRECT_ATTRIBUTE_MAP_.hasOwnProperty(key)) {\n      element.setAttribute(goog.dom.DIRECT_ATTRIBUTE_MAP_[key], val);\n    } else if (\n        goog.string.startsWith(key, 'aria-') ||\n        goog.string.startsWith(key, 'data-')) {\n      element.setAttribute(key, val);\n    } else {\n      element[key] = val;\n    }\n  });\n};\n\n\n/**\n * Map of attributes that should be set using\n * element.setAttribute(key, val) instead of element[key] = val.  Used\n * by goog.dom.setProperties.\n *\n * @private {!Object<string, string>}\n * @const\n */\ngoog.dom.DIRECT_ATTRIBUTE_MAP_ = {\n  'cellpadding': 'cellPadding',\n  'cellspacing': 'cellSpacing',\n  'colspan': 'colSpan',\n  'frameborder': 'frameBorder',\n  'height': 'height',\n  'maxlength': 'maxLength',\n  'nonce': 'nonce',\n  'role': 'role',\n  'rowspan': 'rowSpan',\n  'type': 'type',\n  'usemap': 'useMap',\n  'valign': 'vAlign',\n  'width': 'width'\n};\n\n\n/**\n * Gets the dimensions of the viewport.\n *\n * Gecko Standards mode:\n * docEl.clientWidth  Width of viewport excluding scrollbar.\n * win.innerWidth     Width of viewport including scrollbar.\n * body.clientWidth   Width of body element.\n *\n * docEl.clientHeight Height of viewport excluding scrollbar.\n * win.innerHeight    Height of viewport including scrollbar.\n * body.clientHeight  Height of document.\n *\n * Gecko Backwards compatible mode:\n * docEl.clientWidth  Width of viewport excluding scrollbar.\n * win.innerWidth     Width of viewport including scrollbar.\n * body.clientWidth   Width of viewport excluding scrollbar.\n *\n * docEl.clientHeight Height of document.\n * win.innerHeight    Height of viewport including scrollbar.\n * body.clientHeight  Height of viewport excluding scrollbar.\n *\n * IE6/7 Standards mode:\n * docEl.clientWidth  Width of viewport excluding scrollbar.\n * win.innerWidth     Undefined.\n * body.clientWidth   Width of body element.\n *\n * docEl.clientHeight Height of viewport excluding scrollbar.\n * win.innerHeight    Undefined.\n * body.clientHeight  Height of document element.\n *\n * IE5 + IE6/7 Backwards compatible mode:\n * docEl.clientWidth  0.\n * win.innerWidth     Undefined.\n * body.clientWidth   Width of viewport excluding scrollbar.\n *\n * docEl.clientHeight 0.\n * win.innerHeight    Undefined.\n * body.clientHeight  Height of viewport excluding scrollbar.\n *\n * Opera 9 Standards and backwards compatible mode:\n * docEl.clientWidth  Width of viewport excluding scrollbar.\n * win.innerWidth     Width of viewport including scrollbar.\n * body.clientWidth   Width of viewport excluding scrollbar.\n *\n * docEl.clientHeight Height of document.\n * win.innerHeight    Height of viewport including scrollbar.\n * body.clientHeight  Height of viewport excluding scrollbar.\n *\n * WebKit:\n * Safari 2\n * docEl.clientHeight Same as scrollHeight.\n * docEl.clientWidth  Same as innerWidth.\n * win.innerWidth     Width of viewport excluding scrollbar.\n * win.innerHeight    Height of the viewport including scrollbar.\n * frame.innerHeight  Height of the viewport exluding scrollbar.\n *\n * Safari 3 (tested in 522)\n *\n * docEl.clientWidth  Width of viewport excluding scrollbar.\n * docEl.clientHeight Height of viewport excluding scrollbar in strict mode.\n * body.clientHeight  Height of viewport excluding scrollbar in quirks mode.\n *\n * @param {Window=} opt_window Optional window element to test.\n * @return {!goog.math.Size} Object with values 'width' and 'height'.\n */\ngoog.dom.getViewportSize = function(opt_window) {\n  // TODO(arv): This should not take an argument\n  return goog.dom.getViewportSize_(opt_window || window);\n};\n\n\n/**\n * Helper for `getViewportSize`.\n * @param {Window} win The window to get the view port size for.\n * @return {!goog.math.Size} Object with values 'width' and 'height'.\n * @private\n */\ngoog.dom.getViewportSize_ = function(win) {\n  var doc = win.document;\n  var el = goog.dom.isCss1CompatMode_(doc) ? doc.documentElement : doc.body;\n  return new goog.math.Size(el.clientWidth, el.clientHeight);\n};\n\n\n/**\n * Calculates the height of the document.\n *\n * @return {number} The height of the current document.\n */\ngoog.dom.getDocumentHeight = function() {\n  return goog.dom.getDocumentHeight_(window);\n};\n\n/**\n * Calculates the height of the document of the given window.\n *\n * @param {!Window} win The window whose document height to retrieve.\n * @return {number} The height of the document of the given window.\n */\ngoog.dom.getDocumentHeightForWindow = function(win) {\n  return goog.dom.getDocumentHeight_(win);\n};\n\n/**\n * Calculates the height of the document of the given window.\n *\n * Function code copied from the opensocial gadget api:\n *   gadgets.window.adjustHeight(opt_height)\n *\n * @private\n * @param {!Window} win The window whose document height to retrieve.\n * @return {number} The height of the document of the given window.\n */\ngoog.dom.getDocumentHeight_ = function(win) {\n  // NOTE(eae): This method will return the window size rather than the document\n  // size in webkit quirks mode.\n  var doc = win.document;\n  var height = 0;\n\n  if (doc) {\n    // Calculating inner content height is hard and different between\n    // browsers rendering in Strict vs. Quirks mode.  We use a combination of\n    // three properties within document.body and document.documentElement:\n    // - scrollHeight\n    // - offsetHeight\n    // - clientHeight\n    // These values differ significantly between browsers and rendering modes.\n    // But there are patterns.  It just takes a lot of time and persistence\n    // to figure out.\n\n    var body = doc.body;\n    var docEl = /** @type {!HTMLElement} */ (doc.documentElement);\n    if (!(docEl && body)) {\n      return 0;\n    }\n\n    // Get the height of the viewport\n    var vh = goog.dom.getViewportSize_(win).height;\n    if (goog.dom.isCss1CompatMode_(doc) && docEl.scrollHeight) {\n      // In Strict mode:\n      // The inner content height is contained in either:\n      //    document.documentElement.scrollHeight\n      //    document.documentElement.offsetHeight\n      // Based on studying the values output by different browsers,\n      // use the value that's NOT equal to the viewport height found above.\n      height =\n          docEl.scrollHeight != vh ? docEl.scrollHeight : docEl.offsetHeight;\n    } else {\n      // In Quirks mode:\n      // documentElement.clientHeight is equal to documentElement.offsetHeight\n      // except in IE.  In most browsers, document.documentElement can be used\n      // to calculate the inner content height.\n      // However, in other browsers (e.g. IE), document.body must be used\n      // instead.  How do we know which one to use?\n      // If document.documentElement.clientHeight does NOT equal\n      // document.documentElement.offsetHeight, then use document.body.\n      var sh = docEl.scrollHeight;\n      var oh = docEl.offsetHeight;\n      if (docEl.clientHeight != oh) {\n        sh = body.scrollHeight;\n        oh = body.offsetHeight;\n      }\n\n      // Detect whether the inner content height is bigger or smaller\n      // than the bounding box (viewport).  If bigger, take the larger\n      // value.  If smaller, take the smaller value.\n      if (sh > vh) {\n        // Content is larger\n        height = sh > oh ? sh : oh;\n      } else {\n        // Content is smaller\n        height = sh < oh ? sh : oh;\n      }\n    }\n  }\n\n  return height;\n};\n\n\n/**\n * Gets the page scroll distance as a coordinate object.\n *\n * @param {Window=} opt_window Optional window element to test.\n * @return {!goog.math.Coordinate} Object with values 'x' and 'y'.\n * @deprecated Use {@link goog.dom.getDocumentScroll} instead.\n */\ngoog.dom.getPageScroll = function(opt_window) {\n  var win = opt_window || goog.global || window;\n  return goog.dom.getDomHelper(win.document).getDocumentScroll();\n};\n\n\n/**\n * Gets the document scroll distance as a coordinate object.\n *\n * @return {!goog.math.Coordinate} Object with values 'x' and 'y'.\n */\ngoog.dom.getDocumentScroll = function() {\n  return goog.dom.getDocumentScroll_(document);\n};\n\n\n/**\n * Helper for `getDocumentScroll`.\n *\n * @param {!Document} doc The document to get the scroll for.\n * @return {!goog.math.Coordinate} Object with values 'x' and 'y'.\n * @private\n */\ngoog.dom.getDocumentScroll_ = function(doc) {\n  var el = goog.dom.getDocumentScrollElement_(doc);\n  var win = goog.dom.getWindow_(doc);\n  if (goog.userAgent.IE && goog.userAgent.isVersionOrHigher('10') &&\n      win.pageYOffset != el.scrollTop) {\n    // The keyboard on IE10 touch devices shifts the page using the pageYOffset\n    // without modifying scrollTop. For this case, we want the body scroll\n    // offsets.\n    return new goog.math.Coordinate(el.scrollLeft, el.scrollTop);\n  }\n  return new goog.math.Coordinate(\n      win.pageXOffset || el.scrollLeft, win.pageYOffset || el.scrollTop);\n};\n\n\n/**\n * Gets the document scroll element.\n * @return {!Element} Scrolling element.\n */\ngoog.dom.getDocumentScrollElement = function() {\n  return goog.dom.getDocumentScrollElement_(document);\n};\n\n\n/**\n * Helper for `getDocumentScrollElement`.\n * @param {!Document} doc The document to get the scroll element for.\n * @return {!Element} Scrolling element.\n * @private\n */\ngoog.dom.getDocumentScrollElement_ = function(doc) {\n  // Old WebKit needs body.scrollLeft in both quirks mode and strict mode. We\n  // also default to the documentElement if the document does not have a body\n  // (e.g. a SVG document).\n  // Uses http://dev.w3.org/csswg/cssom-view/#dom-document-scrollingelement to\n  // avoid trying to guess about browser behavior from the UA string.\n  if (doc.scrollingElement) {\n    return doc.scrollingElement;\n  }\n  if (!goog.userAgent.WEBKIT && goog.dom.isCss1CompatMode_(doc)) {\n    return doc.documentElement;\n  }\n  return doc.body || doc.documentElement;\n};\n\n\n/**\n * Gets the window object associated with the given document.\n *\n * @param {Document=} opt_doc  Document object to get window for.\n * @return {!Window} The window associated with the given document.\n */\ngoog.dom.getWindow = function(opt_doc) {\n  // TODO(arv): This should not take an argument.\n  return opt_doc ? goog.dom.getWindow_(opt_doc) : window;\n};\n\n\n/**\n * Helper for `getWindow`.\n *\n * @param {!Document} doc  Document object to get window for.\n * @return {!Window} The window associated with the given document.\n * @private\n */\ngoog.dom.getWindow_ = function(doc) {\n  return /** @type {!Window} */ (doc.parentWindow || doc.defaultView);\n};\n\n\n/**\n * Returns a dom node with a set of attributes.  This function accepts varargs\n * for subsequent nodes to be added.  Subsequent nodes will be added to the\n * first node as childNodes.\n *\n * So:\n * <code>createDom(goog.dom.TagName.DIV, null, createDom(goog.dom.TagName.P),\n * createDom(goog.dom.TagName.P));</code> would return a div with two child\n * paragraphs\n *\n * This function uses {@link goog.dom.setProperties} to set attributes: the\n * `opt_attributes` parameter follows the same rules.\n *\n * @param {string|!goog.dom.TagName<T>} tagName Tag to create.\n * @param {?Object|?Array<string>|string=} opt_attributes If object, then a map\n *     of name-value pairs for attributes. If a string, then this is the\n *     className of the new element. If an array, the elements will be joined\n *     together as the className of the new element.\n * @param {...(Object|string|Array|NodeList|null|undefined)} var_args Further\n *     DOM nodes or strings for text nodes. If one of the var_args is an array\n *     or NodeList, its elements will be added as childNodes instead.\n * @return {R} Reference to a DOM node. The return type is {!Element} if tagName\n *     is a string or a more specific type if it is a member of\n *     goog.dom.TagName (e.g. {!HTMLAnchorElement} for goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n */\ngoog.dom.createDom = function(tagName, opt_attributes, var_args) {\n  return goog.dom.createDom_(document, arguments);\n};\n\n\n/**\n * Helper for `createDom`.\n * @param {!Document} doc The document to create the DOM in.\n * @param {!Arguments} args Argument object passed from the callers. See\n *     `goog.dom.createDom` for details.\n * @return {!Element} Reference to a DOM node.\n * @private\n */\ngoog.dom.createDom_ = function(doc, args) {\n  var tagName = String(args[0]);\n  var attributes = args[1];\n\n  // Internet Explorer is dumb:\n  // name: https://msdn.microsoft.com/en-us/library/ms534184(v=vs.85).aspx\n  // type: https://msdn.microsoft.com/en-us/library/ms534700(v=vs.85).aspx\n  // Also does not allow setting of 'type' attribute on 'input' or 'button'.\n  if (!goog.dom.BrowserFeature.CAN_ADD_NAME_OR_TYPE_ATTRIBUTES && attributes &&\n      (attributes.name || attributes.type)) {\n    var tagNameArr = ['<', tagName];\n    if (attributes.name) {\n      tagNameArr.push(' name=\"', goog.string.htmlEscape(attributes.name), '\"');\n    }\n    if (attributes.type) {\n      tagNameArr.push(' type=\"', goog.string.htmlEscape(attributes.type), '\"');\n\n      // Clone attributes map to remove 'type' without mutating the input.\n      var clone = {};\n      goog.object.extend(clone, attributes);\n\n      // JSCompiler can't see how goog.object.extend added this property,\n      // because it was essentially added by reflection.\n      // So it needs to be quoted.\n      delete clone['type'];\n\n      attributes = clone;\n    }\n    tagNameArr.push('>');\n    tagName = tagNameArr.join('');\n  }\n\n  var element = goog.dom.createElement_(doc, tagName);\n\n  if (attributes) {\n    if (typeof attributes === 'string') {\n      element.className = attributes;\n    } else if (Array.isArray(attributes)) {\n      element.className = attributes.join(' ');\n    } else {\n      goog.dom.setProperties(element, attributes);\n    }\n  }\n\n  if (args.length > 2) {\n    goog.dom.append_(doc, element, args, 2);\n  }\n\n  return element;\n};\n\n\n/**\n * Appends a node with text or other nodes.\n * @param {!Document} doc The document to create new nodes in.\n * @param {!Node} parent The node to append nodes to.\n * @param {!Arguments} args The values to add. See `goog.dom.append`.\n * @param {number} startIndex The index of the array to start from.\n * @private\n */\ngoog.dom.append_ = function(doc, parent, args, startIndex) {\n  function childHandler(child) {\n    // TODO(user): More coercion, ala MochiKit?\n    if (child) {\n      parent.appendChild(\n          typeof child === 'string' ? doc.createTextNode(child) : child);\n    }\n  }\n\n  for (var i = startIndex; i < args.length; i++) {\n    var arg = args[i];\n    // TODO(attila): Fix isArrayLike to return false for a text node.\n    if (goog.isArrayLike(arg) && !goog.dom.isNodeLike(arg)) {\n      // If the argument is a node list, not a real array, use a clone,\n      // because forEach can't be used to mutate a NodeList.\n      goog.array.forEach(\n          goog.dom.isNodeList(arg) ? goog.array.toArray(arg) : arg,\n          childHandler);\n    } else {\n      childHandler(arg);\n    }\n  }\n};\n\n\n/**\n * Alias for `createDom`.\n * @param {string|!goog.dom.TagName<T>} tagName Tag to create.\n * @param {?Object|?Array<string>|string=} opt_attributes If object, then a map\n *     of name-value pairs for attributes. If a string, then this is the\n *     className of the new element. If an array, the elements will be joined\n *     together as the className of the new element.\n * @param {...(Object|string|Array|NodeList|null|undefined)} var_args Further\n *     DOM nodes or strings for text nodes. If one of the var_args is an array,\n *     its children will be added as childNodes instead.\n * @return {R} Reference to a DOM node. The return type is {!Element} if tagName\n *     is a string or a more specific type if it is a member of\n *     goog.dom.TagName (e.g. {!HTMLAnchorElement} for goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n * @deprecated Use {@link goog.dom.createDom} instead.\n */\ngoog.dom.$dom = goog.dom.createDom;\n\n\n/**\n * Creates a new element.\n * @param {string|!goog.dom.TagName<T>} name Tag to create.\n * @return {R} The new element. The return type is {!Element} if name is\n *     a string or a more specific type if it is a member of goog.dom.TagName\n *     (e.g. {!HTMLAnchorElement} for goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n */\ngoog.dom.createElement = function(name) {\n  return goog.dom.createElement_(document, name);\n};\n\n\n/**\n * Creates a new element.\n * @param {!Document} doc The document to create the element in.\n * @param {string|!goog.dom.TagName<T>} name Tag to create.\n * @return {R} The new element. The return type is {!Element} if name is\n *     a string or a more specific type if it is a member of goog.dom.TagName\n *     (e.g. {!HTMLAnchorElement} for goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n * @private\n */\ngoog.dom.createElement_ = function(doc, name) {\n  name = String(name);\n  if (doc.contentType === 'application/xhtml+xml') name = name.toLowerCase();\n  return doc.createElement(name);\n};\n\n\n/**\n * Creates a new text node.\n * @param {number|string} content Content.\n * @return {!Text} The new text node.\n */\ngoog.dom.createTextNode = function(content) {\n  return document.createTextNode(String(content));\n};\n\n\n/**\n * Create a table.\n * @param {number} rows The number of rows in the table.  Must be >= 1.\n * @param {number} columns The number of columns in the table.  Must be >= 1.\n * @param {boolean=} opt_fillWithNbsp If true, fills table entries with\n *     `goog.string.Unicode.NBSP` characters.\n * @return {!Element} The created table.\n */\ngoog.dom.createTable = function(rows, columns, opt_fillWithNbsp) {\n  // TODO(mlourenco): Return HTMLTableElement, also in prototype function.\n  // Callers need to be updated to e.g. not assign numbers to table.cellSpacing.\n  return goog.dom.createTable_(document, rows, columns, !!opt_fillWithNbsp);\n};\n\n\n/**\n * Create a table.\n * @param {!Document} doc Document object to use to create the table.\n * @param {number} rows The number of rows in the table.  Must be >= 1.\n * @param {number} columns The number of columns in the table.  Must be >= 1.\n * @param {boolean} fillWithNbsp If true, fills table entries with\n *     `goog.string.Unicode.NBSP` characters.\n * @return {!HTMLTableElement} The created table.\n * @private\n */\ngoog.dom.createTable_ = function(doc, rows, columns, fillWithNbsp) {\n  var table = goog.dom.createElement_(doc, goog.dom.TagName.TABLE);\n  var tbody =\n      table.appendChild(goog.dom.createElement_(doc, goog.dom.TagName.TBODY));\n  for (var i = 0; i < rows; i++) {\n    var tr = goog.dom.createElement_(doc, goog.dom.TagName.TR);\n    for (var j = 0; j < columns; j++) {\n      var td = goog.dom.createElement_(doc, goog.dom.TagName.TD);\n      // IE <= 9 will create a text node if we set text content to the empty\n      // string, so we avoid doing it unless necessary. This ensures that the\n      // same DOM tree is returned on all browsers.\n      if (fillWithNbsp) {\n        goog.dom.setTextContent(td, goog.string.Unicode.NBSP);\n      }\n      tr.appendChild(td);\n    }\n    tbody.appendChild(tr);\n  }\n  return table;\n};\n\n\n\n/**\n * Creates a new Node from constant strings of HTML markup.\n * @param {...!goog.string.Const} var_args The HTML strings to concatenate then\n *     convert into a node.\n * @return {!Node}\n */\ngoog.dom.constHtmlToNode = function(var_args) {\n  var stringArray = goog.array.map(arguments, goog.string.Const.unwrap);\n  var safeHtml =\n      goog.html.uncheckedconversions\n          .safeHtmlFromStringKnownToSatisfyTypeContract(\n              goog.string.Const.from(\n                  'Constant HTML string, that gets turned into a ' +\n                  'Node later, so it will be automatically balanced.'),\n              stringArray.join(''));\n  return goog.dom.safeHtmlToNode(safeHtml);\n};\n\n\n/**\n * Converts HTML markup into a node. This is a safe version of\n * `goog.dom.htmlToDocumentFragment` which is now deleted.\n * @param {!goog.html.SafeHtml} html The HTML markup to convert.\n * @return {!Node} The resulting node.\n */\ngoog.dom.safeHtmlToNode = function(html) {\n  return goog.dom.safeHtmlToNode_(document, html);\n};\n\n\n/**\n * Helper for `safeHtmlToNode`.\n * @param {!Document} doc The document.\n * @param {!goog.html.SafeHtml} html The HTML markup to convert.\n * @return {!Node} The resulting node.\n * @private\n */\ngoog.dom.safeHtmlToNode_ = function(doc, html) {\n  var tempDiv = goog.dom.createElement_(doc, goog.dom.TagName.DIV);\n  if (goog.dom.BrowserFeature.INNER_HTML_NEEDS_SCOPED_ELEMENT) {\n    goog.dom.safe.setInnerHtml(\n        tempDiv, goog.html.SafeHtml.concat(goog.html.SafeHtml.BR, html));\n    tempDiv.removeChild(goog.asserts.assert(tempDiv.firstChild));\n  } else {\n    goog.dom.safe.setInnerHtml(tempDiv, html);\n  }\n  return goog.dom.childrenToNode_(doc, tempDiv);\n};\n\n\n/**\n * Helper for `safeHtmlToNode_`.\n * @param {!Document} doc The document.\n * @param {!Node} tempDiv The input node.\n * @return {!Node} The resulting node.\n * @private\n */\ngoog.dom.childrenToNode_ = function(doc, tempDiv) {\n  if (tempDiv.childNodes.length == 1) {\n    return tempDiv.removeChild(goog.asserts.assert(tempDiv.firstChild));\n  } else {\n    var fragment = doc.createDocumentFragment();\n    while (tempDiv.firstChild) {\n      fragment.appendChild(tempDiv.firstChild);\n    }\n    return fragment;\n  }\n};\n\n\n/**\n * Returns true if the browser is in \"CSS1-compatible\" (standards-compliant)\n * mode, false otherwise.\n * @return {boolean} True if in CSS1-compatible mode.\n */\ngoog.dom.isCss1CompatMode = function() {\n  return goog.dom.isCss1CompatMode_(document);\n};\n\n\n/**\n * Returns true if the browser is in \"CSS1-compatible\" (standards-compliant)\n * mode, false otherwise.\n * @param {!Document} doc The document to check.\n * @return {boolean} True if in CSS1-compatible mode.\n * @private\n */\ngoog.dom.isCss1CompatMode_ = function(doc) {\n  if (goog.dom.COMPAT_MODE_KNOWN_) {\n    return goog.dom.ASSUME_STANDARDS_MODE;\n  }\n\n  return doc.compatMode == 'CSS1Compat';\n};\n\n\n/**\n * Determines if the given node can contain children, intended to be used for\n * HTML generation.\n *\n * IE natively supports node.canHaveChildren but has inconsistent behavior.\n * Prior to IE8 the base tag allows children and in IE9 all nodes return true\n * for canHaveChildren.\n *\n * In practice all non-IE browsers allow you to add children to any node, but\n * the behavior is inconsistent:\n *\n * <pre>\n *   var a = goog.dom.createElement(goog.dom.TagName.BR);\n *   a.appendChild(document.createTextNode('foo'));\n *   a.appendChild(document.createTextNode('bar'));\n *   console.log(a.childNodes.length);  // 2\n *   console.log(a.innerHTML);  // Chrome: \"\", IE9: \"foobar\", FF3.5: \"foobar\"\n * </pre>\n *\n * For more information, see:\n * http://dev.w3.org/html5/markup/syntax.html#syntax-elements\n *\n * TODO(user): Rename shouldAllowChildren() ?\n *\n * @param {Node} node The node to check.\n * @return {boolean} Whether the node can contain children.\n */\ngoog.dom.canHaveChildren = function(node) {\n  if (node.nodeType != goog.dom.NodeType.ELEMENT) {\n    return false;\n  }\n  switch (/** @type {!Element} */ (node).tagName) {\n    case String(goog.dom.TagName.APPLET):\n    case String(goog.dom.TagName.AREA):\n    case String(goog.dom.TagName.BASE):\n    case String(goog.dom.TagName.BR):\n    case String(goog.dom.TagName.COL):\n    case String(goog.dom.TagName.COMMAND):\n    case String(goog.dom.TagName.EMBED):\n    case String(goog.dom.TagName.FRAME):\n    case String(goog.dom.TagName.HR):\n    case String(goog.dom.TagName.IMG):\n    case String(goog.dom.TagName.INPUT):\n    case String(goog.dom.TagName.IFRAME):\n    case String(goog.dom.TagName.ISINDEX):\n    case String(goog.dom.TagName.KEYGEN):\n    case String(goog.dom.TagName.LINK):\n    case String(goog.dom.TagName.NOFRAMES):\n    case String(goog.dom.TagName.NOSCRIPT):\n    case String(goog.dom.TagName.META):\n    case String(goog.dom.TagName.OBJECT):\n    case String(goog.dom.TagName.PARAM):\n    case String(goog.dom.TagName.SCRIPT):\n    case String(goog.dom.TagName.SOURCE):\n    case String(goog.dom.TagName.STYLE):\n    case String(goog.dom.TagName.TRACK):\n    case String(goog.dom.TagName.WBR):\n      return false;\n  }\n  return true;\n};\n\n\n/**\n * Appends a child to a node.\n * @param {Node} parent Parent.\n * @param {Node} child Child.\n */\ngoog.dom.appendChild = function(parent, child) {\n  goog.asserts.assert(\n      parent != null && child != null,\n      'goog.dom.appendChild expects non-null arguments');\n  parent.appendChild(child);\n};\n\n\n/**\n * Appends a node with text or other nodes.\n * @param {!Node} parent The node to append nodes to.\n * @param {...goog.dom.Appendable} var_args The things to append to the node.\n *     If this is a Node it is appended as is.\n *     If this is a string then a text node is appended.\n *     If this is an array like object then fields 0 to length - 1 are appended.\n */\ngoog.dom.append = function(parent, var_args) {\n  goog.dom.append_(goog.dom.getOwnerDocument(parent), parent, arguments, 1);\n};\n\n\n/**\n * Removes all the child nodes on a DOM node.\n * @param {Node} node Node to remove children from.\n */\ngoog.dom.removeChildren = function(node) {\n  // Note: Iterations over live collections can be slow, this is the fastest\n  // we could find. The double parenthesis are used to prevent JsCompiler and\n  // strict warnings.\n  var child;\n  while ((child = node.firstChild)) {\n    node.removeChild(child);\n  }\n};\n\n\n/**\n * Inserts a new node before an existing reference node (i.e. as the previous\n * sibling). If the reference node has no parent, then does nothing.\n * @param {Node} newNode Node to insert.\n * @param {Node} refNode Reference node to insert before.\n */\ngoog.dom.insertSiblingBefore = function(newNode, refNode) {\n  goog.asserts.assert(\n      newNode != null && refNode != null,\n      'goog.dom.insertSiblingBefore expects non-null arguments');\n  if (refNode.parentNode) {\n    refNode.parentNode.insertBefore(newNode, refNode);\n  }\n};\n\n\n/**\n * Inserts a new node after an existing reference node (i.e. as the next\n * sibling). If the reference node has no parent, then does nothing.\n * @param {Node} newNode Node to insert.\n * @param {Node} refNode Reference node to insert after.\n */\ngoog.dom.insertSiblingAfter = function(newNode, refNode) {\n  goog.asserts.assert(\n      newNode != null && refNode != null,\n      'goog.dom.insertSiblingAfter expects non-null arguments');\n  if (refNode.parentNode) {\n    refNode.parentNode.insertBefore(newNode, refNode.nextSibling);\n  }\n};\n\n\n/**\n * Insert a child at a given index. If index is larger than the number of child\n * nodes that the parent currently has, the node is inserted as the last child\n * node.\n * @param {Element} parent The element into which to insert the child.\n * @param {Node} child The element to insert.\n * @param {number} index The index at which to insert the new child node. Must\n *     not be negative.\n */\ngoog.dom.insertChildAt = function(parent, child, index) {\n  // Note that if the second argument is null, insertBefore\n  // will append the child at the end of the list of children.\n  goog.asserts.assert(\n      parent != null, 'goog.dom.insertChildAt expects a non-null parent');\n  parent.insertBefore(\n      /** @type {!Node} */ (child), parent.childNodes[index] || null);\n};\n\n\n/**\n * Removes a node from its parent.\n * @param {Node} node The node to remove.\n * @return {Node} The node removed if removed; else, null.\n */\ngoog.dom.removeNode = function(node) {\n  return node && node.parentNode ? node.parentNode.removeChild(node) : null;\n};\n\n\n/**\n * Replaces a node in the DOM tree. Will do nothing if `oldNode` has no\n * parent.\n * @param {Node} newNode Node to insert.\n * @param {Node} oldNode Node to replace.\n */\ngoog.dom.replaceNode = function(newNode, oldNode) {\n  goog.asserts.assert(\n      newNode != null && oldNode != null,\n      'goog.dom.replaceNode expects non-null arguments');\n  var parent = oldNode.parentNode;\n  if (parent) {\n    parent.replaceChild(newNode, oldNode);\n  }\n};\n\n\n/**\n * Replaces child nodes of `target` with child nodes of `source`. This is\n * roughly equivalent to `target.innerHTML = source.innerHTML` which is not\n * compatible with Trusted Types.\n * @param {?Node} target Node to clean and replace its children.\n * @param {?Node} source Node to get the children from. The nodes will be cloned\n *     so they will stay in source.\n */\ngoog.dom.copyContents = function(target, source) {\n  goog.asserts.assert(\n      target != null && source != null,\n      'goog.dom.copyContents expects non-null arguments');\n  var childNodes = source.cloneNode(/* deep= */ true).childNodes;\n  goog.dom.removeChildren(target);\n  while (childNodes.length) {\n    target.appendChild(childNodes[0]);\n  }\n};\n\n\n/**\n * Flattens an element. That is, removes it and replace it with its children.\n * Does nothing if the element is not in the document.\n * @param {Element} element The element to flatten.\n * @return {Element|undefined} The original element, detached from the document\n *     tree, sans children; or undefined, if the element was not in the document\n *     to begin with.\n */\ngoog.dom.flattenElement = function(element) {\n  var child, parent = element.parentNode;\n  if (parent && parent.nodeType != goog.dom.NodeType.DOCUMENT_FRAGMENT) {\n    // Use IE DOM method (supported by Opera too) if available\n    if (element.removeNode) {\n      return /** @type {Element} */ (element.removeNode(false));\n    } else {\n      // Move all children of the original node up one level.\n      while ((child = element.firstChild)) {\n        parent.insertBefore(child, element);\n      }\n\n      // Detach the original element.\n      return /** @type {Element} */ (goog.dom.removeNode(element));\n    }\n  }\n};\n\n\n/**\n * Returns an array containing just the element children of the given element.\n * @param {Element} element The element whose element children we want.\n * @return {!(Array<!Element>|NodeList<!Element>)} An array or array-like list\n *     of just the element children of the given element.\n */\ngoog.dom.getChildren = function(element) {\n  // We check if the children attribute is supported for child elements\n  // since IE8 misuses the attribute by also including comments.\n  if (goog.dom.BrowserFeature.CAN_USE_CHILDREN_ATTRIBUTE &&\n      element.children != undefined) {\n    return element.children;\n  }\n  // Fall back to manually filtering the element's child nodes.\n  return goog.array.filter(element.childNodes, function(node) {\n    return node.nodeType == goog.dom.NodeType.ELEMENT;\n  });\n};\n\n\n/**\n * Returns the first child node that is an element.\n * @param {Node} node The node to get the first child element of.\n * @return {Element} The first child node of `node` that is an element.\n */\ngoog.dom.getFirstElementChild = function(node) {\n  if (node.firstElementChild !== undefined) {\n    return /** @type {!Element} */ (node).firstElementChild;\n  }\n  return goog.dom.getNextElementNode_(node.firstChild, true);\n};\n\n\n/**\n * Returns the last child node that is an element.\n * @param {Node} node The node to get the last child element of.\n * @return {Element} The last child node of `node` that is an element.\n */\ngoog.dom.getLastElementChild = function(node) {\n  if (node.lastElementChild !== undefined) {\n    return /** @type {!Element} */ (node).lastElementChild;\n  }\n  return goog.dom.getNextElementNode_(node.lastChild, false);\n};\n\n\n/**\n * Returns the first next sibling that is an element.\n * @param {Node} node The node to get the next sibling element of.\n * @return {Element} The next sibling of `node` that is an element.\n */\ngoog.dom.getNextElementSibling = function(node) {\n  if (node.nextElementSibling !== undefined) {\n    return /** @type {!Element} */ (node).nextElementSibling;\n  }\n  return goog.dom.getNextElementNode_(node.nextSibling, true);\n};\n\n\n/**\n * Returns the first previous sibling that is an element.\n * @param {Node} node The node to get the previous sibling element of.\n * @return {Element} The first previous sibling of `node` that is\n *     an element.\n */\ngoog.dom.getPreviousElementSibling = function(node) {\n  if (node.previousElementSibling !== undefined) {\n    return /** @type {!Element} */ (node).previousElementSibling;\n  }\n  return goog.dom.getNextElementNode_(node.previousSibling, false);\n};\n\n\n/**\n * Returns the first node that is an element in the specified direction,\n * starting with `node`.\n * @param {Node} node The node to get the next element from.\n * @param {boolean} forward Whether to look forwards or backwards.\n * @return {Element} The first element.\n * @private\n */\ngoog.dom.getNextElementNode_ = function(node, forward) {\n  while (node && node.nodeType != goog.dom.NodeType.ELEMENT) {\n    node = forward ? node.nextSibling : node.previousSibling;\n  }\n\n  return /** @type {Element} */ (node);\n};\n\n\n/**\n * Returns the next node in source order from the given node.\n * @param {Node} node The node.\n * @return {Node} The next node in the DOM tree, or null if this was the last\n *     node.\n */\ngoog.dom.getNextNode = function(node) {\n  if (!node) {\n    return null;\n  }\n\n  if (node.firstChild) {\n    return node.firstChild;\n  }\n\n  while (node && !node.nextSibling) {\n    node = node.parentNode;\n  }\n\n  return node ? node.nextSibling : null;\n};\n\n\n/**\n * Returns the previous node in source order from the given node.\n * @param {Node} node The node.\n * @return {Node} The previous node in the DOM tree, or null if this was the\n *     first node.\n */\ngoog.dom.getPreviousNode = function(node) {\n  if (!node) {\n    return null;\n  }\n\n  if (!node.previousSibling) {\n    return node.parentNode;\n  }\n\n  node = node.previousSibling;\n  while (node && node.lastChild) {\n    node = node.lastChild;\n  }\n\n  return node;\n};\n\n\n/**\n * Whether the object looks like a DOM node.\n * @param {?} obj The object being tested for node likeness.\n * @return {boolean} Whether the object looks like a DOM node.\n */\ngoog.dom.isNodeLike = function(obj) {\n  return goog.isObject(obj) && obj.nodeType > 0;\n};\n\n\n/**\n * Whether the object looks like an Element.\n * @param {?} obj The object being tested for Element likeness.\n * @return {boolean} Whether the object looks like an Element.\n */\ngoog.dom.isElement = function(obj) {\n  return goog.isObject(obj) && obj.nodeType == goog.dom.NodeType.ELEMENT;\n};\n\n\n/**\n * Returns true if the specified value is a Window object. This includes the\n * global window for HTML pages, and iframe windows.\n * @param {?} obj Variable to test.\n * @return {boolean} Whether the variable is a window.\n */\ngoog.dom.isWindow = function(obj) {\n  return goog.isObject(obj) && obj['window'] == obj;\n};\n\n\n/**\n * Returns an element's parent, if it's an Element.\n * @param {Element} element The DOM element.\n * @return {Element} The parent, or null if not an Element.\n */\ngoog.dom.getParentElement = function(element) {\n  var parent;\n  if (goog.dom.BrowserFeature.CAN_USE_PARENT_ELEMENT_PROPERTY) {\n    var isIe9 = goog.userAgent.IE && goog.userAgent.isVersionOrHigher('9') &&\n        !goog.userAgent.isVersionOrHigher('10');\n    // SVG elements in IE9 can't use the parentElement property.\n    // goog.global['SVGElement'] is not defined in IE9 quirks mode.\n    if (!(isIe9 && goog.global['SVGElement'] &&\n          element instanceof goog.global['SVGElement'])) {\n      parent = element.parentElement;\n      if (parent) {\n        return parent;\n      }\n    }\n  }\n  parent = element.parentNode;\n  return goog.dom.isElement(parent) ? /** @type {!Element} */ (parent) : null;\n};\n\n\n/**\n * Whether a node contains another node.\n * @param {?Node|undefined} parent The node that should contain the other node.\n * @param {?Node|undefined} descendant The node to test presence of.\n * @return {boolean} Whether the parent node contains the descendant node.\n */\ngoog.dom.contains = function(parent, descendant) {\n  if (!parent || !descendant) {\n    return false;\n  }\n  // We use browser specific methods for this if available since it is faster\n  // that way.\n\n  // IE DOM\n  if (parent.contains && descendant.nodeType == goog.dom.NodeType.ELEMENT) {\n    return parent == descendant || parent.contains(descendant);\n  }\n\n  // W3C DOM Level 3\n  if (typeof parent.compareDocumentPosition != 'undefined') {\n    return parent == descendant ||\n        Boolean(parent.compareDocumentPosition(descendant) & 16);\n  }\n\n  // W3C DOM Level 1\n  while (descendant && parent != descendant) {\n    descendant = descendant.parentNode;\n  }\n  return descendant == parent;\n};\n\n\n/**\n * Compares the document order of two nodes, returning 0 if they are the same\n * node, a negative number if node1 is before node2, and a positive number if\n * node2 is before node1.  Note that we compare the order the tags appear in the\n * document so in the tree <b><i>text</i></b> the B node is considered to be\n * before the I node.\n *\n * @param {Node} node1 The first node to compare.\n * @param {Node} node2 The second node to compare.\n * @return {number} 0 if the nodes are the same node, a negative number if node1\n *     is before node2, and a positive number if node2 is before node1.\n */\ngoog.dom.compareNodeOrder = function(node1, node2) {\n  // Fall out quickly for equality.\n  if (node1 == node2) {\n    return 0;\n  }\n\n  // Use compareDocumentPosition where available\n  if (node1.compareDocumentPosition) {\n    // 4 is the bitmask for FOLLOWS.\n    return node1.compareDocumentPosition(node2) & 2 ? 1 : -1;\n  }\n\n  // Special case for document nodes on IE 7 and 8.\n  if (goog.userAgent.IE && !goog.userAgent.isDocumentModeOrHigher(9)) {\n    if (node1.nodeType == goog.dom.NodeType.DOCUMENT) {\n      return -1;\n    }\n    if (node2.nodeType == goog.dom.NodeType.DOCUMENT) {\n      return 1;\n    }\n  }\n\n  // Process in IE using sourceIndex - we check to see if the first node has\n  // a source index or if its parent has one.\n  if ('sourceIndex' in node1 ||\n      (node1.parentNode && 'sourceIndex' in node1.parentNode)) {\n    var isElement1 = node1.nodeType == goog.dom.NodeType.ELEMENT;\n    var isElement2 = node2.nodeType == goog.dom.NodeType.ELEMENT;\n\n    if (isElement1 && isElement2) {\n      return node1.sourceIndex - node2.sourceIndex;\n    } else {\n      var parent1 = node1.parentNode;\n      var parent2 = node2.parentNode;\n\n      if (parent1 == parent2) {\n        return goog.dom.compareSiblingOrder_(node1, node2);\n      }\n\n      if (!isElement1 && goog.dom.contains(parent1, node2)) {\n        return -1 * goog.dom.compareParentsDescendantNodeIe_(node1, node2);\n      }\n\n\n      if (!isElement2 && goog.dom.contains(parent2, node1)) {\n        return goog.dom.compareParentsDescendantNodeIe_(node2, node1);\n      }\n\n      return (isElement1 ? node1.sourceIndex : parent1.sourceIndex) -\n          (isElement2 ? node2.sourceIndex : parent2.sourceIndex);\n    }\n  }\n\n  // For Safari, we compare ranges.\n  var doc = goog.dom.getOwnerDocument(node1);\n\n  var range1, range2;\n  range1 = doc.createRange();\n  range1.selectNode(node1);\n  range1.collapse(true);\n\n  range2 = doc.createRange();\n  range2.selectNode(node2);\n  range2.collapse(true);\n\n  return range1.compareBoundaryPoints(\n      goog.global['Range'].START_TO_END, range2);\n};\n\n\n/**\n * Utility function to compare the position of two nodes, when\n * `textNode`'s parent is an ancestor of `node`.  If this entry\n * condition is not met, this function will attempt to reference a null object.\n * @param {!Node} textNode The textNode to compare.\n * @param {Node} node The node to compare.\n * @return {number} -1 if node is before textNode, +1 otherwise.\n * @private\n */\ngoog.dom.compareParentsDescendantNodeIe_ = function(textNode, node) {\n  var parent = textNode.parentNode;\n  if (parent == node) {\n    // If textNode is a child of node, then node comes first.\n    return -1;\n  }\n  var sibling = node;\n  while (sibling.parentNode != parent) {\n    sibling = sibling.parentNode;\n  }\n  return goog.dom.compareSiblingOrder_(sibling, textNode);\n};\n\n\n/**\n * Utility function to compare the position of two nodes known to be non-equal\n * siblings.\n * @param {Node} node1 The first node to compare.\n * @param {!Node} node2 The second node to compare.\n * @return {number} -1 if node1 is before node2, +1 otherwise.\n * @private\n */\ngoog.dom.compareSiblingOrder_ = function(node1, node2) {\n  var s = node2;\n  while ((s = s.previousSibling)) {\n    if (s == node1) {\n      // We just found node1 before node2.\n      return -1;\n    }\n  }\n\n  // Since we didn't find it, node1 must be after node2.\n  return 1;\n};\n\n\n/**\n * Find the deepest common ancestor of the given nodes.\n * @param {...Node} var_args The nodes to find a common ancestor of.\n * @return {Node} The common ancestor of the nodes, or null if there is none.\n *     null will only be returned if two or more of the nodes are from different\n *     documents.\n */\ngoog.dom.findCommonAncestor = function(var_args) {\n  var i, count = arguments.length;\n  if (!count) {\n    return null;\n  } else if (count == 1) {\n    return arguments[0];\n  }\n\n  var paths = [];\n  var minLength = Infinity;\n  for (i = 0; i < count; i++) {\n    // Compute the list of ancestors.\n    var ancestors = [];\n    var node = arguments[i];\n    while (node) {\n      ancestors.unshift(node);\n      node = node.parentNode;\n    }\n\n    // Save the list for comparison.\n    paths.push(ancestors);\n    minLength = Math.min(minLength, ancestors.length);\n  }\n  var output = null;\n  for (i = 0; i < minLength; i++) {\n    var first = paths[0][i];\n    for (var j = 1; j < count; j++) {\n      if (first != paths[j][i]) {\n        return output;\n      }\n    }\n    output = first;\n  }\n  return output;\n};\n\n\n/**\n * Returns whether node is in a document or detached. Throws an error if node\n * itself is a document. This specifically handles two cases beyond naive use of\n * builtins: (1) it works correctly in IE, and (2) it works for elements from\n * different documents/iframes. If neither of these considerations are relevant\n * then a simple `document.contains(node)` may be used instead.\n * @param {!Node} node\n * @return {boolean}\n */\ngoog.dom.isInDocument = function(node) {\n  return (node.ownerDocument.compareDocumentPosition(node) & 16) == 16;\n};\n\n\n/**\n * Returns the owner document for a node.\n * @param {Node|Window} node The node to get the document for.\n * @return {!Document} The document owning the node.\n */\ngoog.dom.getOwnerDocument = function(node) {\n  // TODO(nnaze): Update param signature to be non-nullable.\n  goog.asserts.assert(node, 'Node cannot be null or undefined.');\n  return /** @type {!Document} */ (\n      node.nodeType == goog.dom.NodeType.DOCUMENT ? node : node.ownerDocument ||\n              node.document);\n};\n\n\n/**\n * Cross-browser function for getting the document element of a frame or iframe.\n * @param {Element} frame Frame element.\n * @return {!Document} The frame content document.\n */\ngoog.dom.getFrameContentDocument = function(frame) {\n  return frame.contentDocument ||\n      /** @type {!HTMLFrameElement} */ (frame).contentWindow.document;\n};\n\n\n/**\n * Cross-browser function for getting the window of a frame or iframe.\n * @param {Element} frame Frame element.\n * @return {Window} The window associated with the given frame, or null if none\n *     exists.\n */\ngoog.dom.getFrameContentWindow = function(frame) {\n  try {\n    return frame.contentWindow ||\n        (frame.contentDocument ? goog.dom.getWindow(frame.contentDocument) :\n                                 null);\n  } catch (e) {\n    // NOTE(user): In IE8, checking the contentWindow or contentDocument\n    // properties will throw a \"Unspecified Error\" exception if the iframe is\n    // not inserted in the DOM. If we get this we can be sure that no window\n    // exists, so return null.\n  }\n  return null;\n};\n\n\n/**\n * Sets the text content of a node, with cross-browser support.\n * @param {Node} node The node to change the text content of.\n * @param {string|number} text The value that should replace the node's content.\n */\ngoog.dom.setTextContent = function(node, text) {\n  goog.asserts.assert(\n      node != null,\n      'goog.dom.setTextContent expects a non-null value for node');\n\n  if ('textContent' in node) {\n    node.textContent = text;\n  } else if (node.nodeType == goog.dom.NodeType.TEXT) {\n    /** @type {!Text} */ (node).data = String(text);\n  } else if (\n      node.firstChild && node.firstChild.nodeType == goog.dom.NodeType.TEXT) {\n    // If the first child is a text node we just change its data and remove the\n    // rest of the children.\n    while (node.lastChild != node.firstChild) {\n      node.removeChild(goog.asserts.assert(node.lastChild));\n    }\n    /** @type {!Text} */ (node.firstChild).data = String(text);\n  } else {\n    goog.dom.removeChildren(node);\n    var doc = goog.dom.getOwnerDocument(node);\n    node.appendChild(doc.createTextNode(String(text)));\n  }\n};\n\n\n/**\n * Gets the outerHTML of a node, which is like innerHTML, except that it\n * actually contains the HTML of the node itself.\n * @param {Element} element The element to get the HTML of.\n * @return {string} The outerHTML of the given element.\n */\ngoog.dom.getOuterHtml = function(element) {\n  goog.asserts.assert(\n      element !== null,\n      'goog.dom.getOuterHtml expects a non-null value for element');\n  // IE, Opera and WebKit all have outerHTML.\n  if ('outerHTML' in element) {\n    return element.outerHTML;\n  } else {\n    var doc = goog.dom.getOwnerDocument(element);\n    var div = goog.dom.createElement_(doc, goog.dom.TagName.DIV);\n    div.appendChild(element.cloneNode(true));\n    return div.innerHTML;\n  }\n};\n\n\n/**\n * Finds the first descendant node that matches the filter function, using depth\n * first search. This function offers the most general purpose way of finding a\n * matching element.\n *\n * Prefer using `querySelector` if the matching criteria can be expressed as a\n * CSS selector, or `goog.dom.findElement` if you would filter for `nodeType ==\n * Node.ELEMENT_NODE`.\n *\n * @param {Node} root The root of the tree to search.\n * @param {function(Node) : boolean} p The filter function.\n * @return {Node|undefined} The found node or undefined if none is found.\n */\ngoog.dom.findNode = function(root, p) {\n  var rv = [];\n  var found = goog.dom.findNodes_(root, p, rv, true);\n  return found ? rv[0] : undefined;\n};\n\n\n/**\n * Finds all the descendant nodes that match the filter function, using depth\n * first search. This function offers the most general-purpose way\n * of finding a set of matching elements.\n *\n * Prefer using `querySelectorAll` if the matching criteria can be expressed as\n * a CSS selector, or `goog.dom.findElements` if you would filter for\n * `nodeType == Node.ELEMENT_NODE`.\n *\n * @param {Node} root The root of the tree to search.\n * @param {function(Node) : boolean} p The filter function.\n * @return {!Array<!Node>} The found nodes or an empty array if none are found.\n */\ngoog.dom.findNodes = function(root, p) {\n  var rv = [];\n  goog.dom.findNodes_(root, p, rv, false);\n  return rv;\n};\n\n\n/**\n * Finds the first or all the descendant nodes that match the filter function,\n * using a depth first search.\n * @param {Node} root The root of the tree to search.\n * @param {function(Node) : boolean} p The filter function.\n * @param {!Array<!Node>} rv The found nodes are added to this array.\n * @param {boolean} findOne If true we exit after the first found node.\n * @return {boolean} Whether the search is complete or not. True in case findOne\n *     is true and the node is found. False otherwise.\n * @private\n */\ngoog.dom.findNodes_ = function(root, p, rv, findOne) {\n  if (root != null) {\n    var child = root.firstChild;\n    while (child) {\n      if (p(child)) {\n        rv.push(child);\n        if (findOne) {\n          return true;\n        }\n      }\n      if (goog.dom.findNodes_(child, p, rv, findOne)) {\n        return true;\n      }\n      child = child.nextSibling;\n    }\n  }\n  return false;\n};\n\n\n/**\n * Finds the first descendant element (excluding `root`) that matches the filter\n * function, using depth first search. Prefer using `querySelector` if the\n * matching criteria can be expressed as a CSS selector.\n *\n * @param {!Element | !Document} root\n * @param {function(!Element): boolean} pred Filter function.\n * @return {?Element} First matching element or null if there is none.\n */\ngoog.dom.findElement = function(root, pred) {\n  var stack = goog.dom.getChildrenReverse_(root);\n  while (stack.length > 0) {\n    var next = stack.pop();\n    if (pred(next)) return next;\n    for (var c = next.lastElementChild; c; c = c.previousElementSibling) {\n      stack.push(c);\n    }\n  }\n  return null;\n};\n\n\n/**\n * Finds all the descendant elements (excluding `root`) that match the filter\n * function, using depth first search. Prefer using `querySelectorAll` if the\n * matching criteria can be expressed as a CSS selector.\n *\n * @param {!Element | !Document} root\n * @param {function(!Element): boolean} pred Filter function.\n * @return {!Array<!Element>}\n */\ngoog.dom.findElements = function(root, pred) {\n  var result = [], stack = goog.dom.getChildrenReverse_(root);\n  while (stack.length > 0) {\n    var next = stack.pop();\n    if (pred(next)) result.push(next);\n    for (var c = next.lastElementChild; c; c = c.previousElementSibling) {\n      stack.push(c);\n    }\n  }\n  return result;\n};\n\n\n/**\n * @param {!Element | !Document} node\n * @return {!Array<!Element>} node's child elements in reverse order.\n * @private\n */\ngoog.dom.getChildrenReverse_ = function(node) {\n  // document.lastElementChild doesn't exist in IE9; fall back to\n  // documentElement.\n  if (node.nodeType == goog.dom.NodeType.DOCUMENT) {\n    return [node.documentElement];\n  } else {\n    var children = [];\n    for (var c = node.lastElementChild; c; c = c.previousElementSibling) {\n      children.push(c);\n    }\n    return children;\n  }\n};\n\n\n/**\n * Map of tags whose content to ignore when calculating text length.\n * @private {!Object<string, number>}\n * @const\n */\ngoog.dom.TAGS_TO_IGNORE_ = {\n  'SCRIPT': 1,\n  'STYLE': 1,\n  'HEAD': 1,\n  'IFRAME': 1,\n  'OBJECT': 1\n};\n\n\n/**\n * Map of tags which have predefined values with regard to whitespace.\n * @private {!Object<string, string>}\n * @const\n */\ngoog.dom.PREDEFINED_TAG_VALUES_ = {\n  'IMG': ' ',\n  'BR': '\\n'\n};\n\n\n/**\n * Returns true if the element has a tab index that allows it to receive\n * keyboard focus (tabIndex >= 0), false otherwise.  Note that some elements\n * natively support keyboard focus, even if they have no tab index.\n * @param {!Element} element Element to check.\n * @return {boolean} Whether the element has a tab index that allows keyboard\n *     focus.\n */\ngoog.dom.isFocusableTabIndex = function(element) {\n  return goog.dom.hasSpecifiedTabIndex_(element) &&\n      goog.dom.isTabIndexFocusable_(element);\n};\n\n\n/**\n * Enables or disables keyboard focus support on the element via its tab index.\n * Only elements for which {@link goog.dom.isFocusableTabIndex} returns true\n * (or elements that natively support keyboard focus, like form elements) can\n * receive keyboard focus.  See http://go/tabindex for more info.\n * @param {Element} element Element whose tab index is to be changed.\n * @param {boolean} enable Whether to set or remove a tab index on the element\n *     that supports keyboard focus.\n */\ngoog.dom.setFocusableTabIndex = function(element, enable) {\n  if (enable) {\n    element.tabIndex = 0;\n  } else {\n    // Set tabIndex to -1 first, then remove it. This is a workaround for\n    // Safari (confirmed in version 4 on Windows). When removing the attribute\n    // without setting it to -1 first, the element remains keyboard focusable\n    // despite not having a tabIndex attribute anymore.\n    element.tabIndex = -1;\n    element.removeAttribute('tabIndex');  // Must be camelCase!\n  }\n};\n\n\n/**\n * Returns true if the element can be focused, i.e. it has a tab index that\n * allows it to receive keyboard focus (tabIndex >= 0), or it is an element\n * that natively supports keyboard focus.\n * @param {!Element} element Element to check.\n * @return {boolean} Whether the element allows keyboard focus.\n */\ngoog.dom.isFocusable = function(element) {\n  var focusable;\n  // Some elements can have unspecified tab index and still receive focus.\n  if (goog.dom.nativelySupportsFocus_(element)) {\n    // Make sure the element is not disabled ...\n    focusable = !element.disabled &&\n        // ... and if a tab index is specified, it allows focus.\n        (!goog.dom.hasSpecifiedTabIndex_(element) ||\n         goog.dom.isTabIndexFocusable_(element));\n  } else {\n    focusable = goog.dom.isFocusableTabIndex(element);\n  }\n\n  // IE requires elements to be visible in order to focus them.\n  return focusable && goog.userAgent.IE ?\n      goog.dom.hasNonZeroBoundingRect_(/** @type {!HTMLElement} */ (element)) :\n      focusable;\n};\n\n\n/**\n * Returns true if the element has a specified tab index.\n * @param {!Element} element Element to check.\n * @return {boolean} Whether the element has a specified tab index.\n * @private\n */\ngoog.dom.hasSpecifiedTabIndex_ = function(element) {\n  // IE8 and below don't support hasAttribute(), instead check whether the\n  // 'tabindex' attributeNode is specified. Otherwise check hasAttribute().\n  if (goog.userAgent.IE && !goog.userAgent.isVersionOrHigher('9')) {\n    var attrNode = element.getAttributeNode('tabindex');  // Must be lowercase!\n    return attrNode != null && attrNode.specified;\n  } else {\n    return element.hasAttribute('tabindex');\n  }\n};\n\n\n/**\n * Returns true if the element's tab index allows the element to be focused.\n * @param {!Element} element Element to check.\n * @return {boolean} Whether the element's tab index allows focus.\n * @private\n */\ngoog.dom.isTabIndexFocusable_ = function(element) {\n  var index = /** @type {!HTMLElement} */ (element).tabIndex;\n  // NOTE: IE9 puts tabIndex in 16-bit int, e.g. -2 is 65534.\n  return typeof (index) === 'number' && index >= 0 && index < 32768;\n};\n\n\n/**\n * Returns true if the element is focusable even when tabIndex is not set.\n * @param {!Element} element Element to check.\n * @return {boolean} Whether the element natively supports focus.\n * @private\n */\ngoog.dom.nativelySupportsFocus_ = function(element) {\n  return (\n      element.tagName == goog.dom.TagName.A && element.hasAttribute('href') ||\n      element.tagName == goog.dom.TagName.INPUT ||\n      element.tagName == goog.dom.TagName.TEXTAREA ||\n      element.tagName == goog.dom.TagName.SELECT ||\n      element.tagName == goog.dom.TagName.BUTTON);\n};\n\n\n/**\n * Returns true if the element has a bounding rectangle that would be visible\n * (i.e. its width and height are greater than zero).\n * @param {!HTMLElement} element Element to check.\n * @return {boolean} Whether the element has a non-zero bounding rectangle.\n * @private\n */\ngoog.dom.hasNonZeroBoundingRect_ = function(element) {\n  var rect;\n  if (!goog.isFunction(element['getBoundingClientRect']) ||\n      // In IE, getBoundingClientRect throws on detached nodes.\n      (goog.userAgent.IE && element.parentElement == null)) {\n    rect = {'height': element.offsetHeight, 'width': element.offsetWidth};\n  } else {\n    rect = element.getBoundingClientRect();\n  }\n  return rect != null && rect.height > 0 && rect.width > 0;\n};\n\n\n/**\n * Returns the text content of the current node, without markup and invisible\n * symbols. New lines are stripped and whitespace is collapsed,\n * such that each character would be visible.\n *\n * In browsers that support it, innerText is used.  Other browsers attempt to\n * simulate it via node traversal.  Line breaks are canonicalized in IE.\n *\n * @param {Node} node The node from which we are getting content.\n * @return {string} The text content.\n */\ngoog.dom.getTextContent = function(node) {\n  var textContent;\n  // Note(arv): IE9, Opera, and Safari 3 support innerText but they include\n  // text nodes in script tags. So we revert to use a user agent test here.\n  if (goog.dom.BrowserFeature.CAN_USE_INNER_TEXT && node !== null &&\n      ('innerText' in node)) {\n    textContent = goog.string.canonicalizeNewlines(node.innerText);\n    // Unfortunately .innerText() returns text with &shy; symbols\n    // We need to filter it out and then remove duplicate whitespaces\n  } else {\n    var buf = [];\n    goog.dom.getTextContent_(node, buf, true);\n    textContent = buf.join('');\n  }\n\n  // Strip &shy; entities. goog.format.insertWordBreaks inserts them in Opera.\n  textContent = textContent.replace(/ \\xAD /g, ' ').replace(/\\xAD/g, '');\n  // Strip &#8203; entities. goog.format.insertWordBreaks inserts them in IE8.\n  textContent = textContent.replace(/\\u200B/g, '');\n\n  // Skip this replacement on old browsers with working innerText, which\n  // automatically turns &nbsp; into ' ' and / +/ into ' ' when reading\n  // innerText.\n  if (!goog.dom.BrowserFeature.CAN_USE_INNER_TEXT) {\n    textContent = textContent.replace(/ +/g, ' ');\n  }\n  if (textContent != ' ') {\n    textContent = textContent.replace(/^\\s*/, '');\n  }\n\n  return textContent;\n};\n\n\n/**\n * Returns the text content of the current node, without markup.\n *\n * Unlike `getTextContent` this method does not collapse whitespaces\n * or normalize lines breaks.\n *\n * @param {Node} node The node from which we are getting content.\n * @return {string} The raw text content.\n */\ngoog.dom.getRawTextContent = function(node) {\n  var buf = [];\n  goog.dom.getTextContent_(node, buf, false);\n\n  return buf.join('');\n};\n\n\n/**\n * Recursive support function for text content retrieval.\n *\n * @param {Node} node The node from which we are getting content.\n * @param {Array<string>} buf string buffer.\n * @param {boolean} normalizeWhitespace Whether to normalize whitespace.\n * @private\n */\ngoog.dom.getTextContent_ = function(node, buf, normalizeWhitespace) {\n  if (node.nodeName in goog.dom.TAGS_TO_IGNORE_) {\n    // ignore certain tags\n  } else if (node.nodeType == goog.dom.NodeType.TEXT) {\n    if (normalizeWhitespace) {\n      buf.push(String(node.nodeValue).replace(/(\\r\\n|\\r|\\n)/g, ''));\n    } else {\n      buf.push(node.nodeValue);\n    }\n  } else if (node.nodeName in goog.dom.PREDEFINED_TAG_VALUES_) {\n    buf.push(goog.dom.PREDEFINED_TAG_VALUES_[node.nodeName]);\n  } else {\n    var child = node.firstChild;\n    while (child) {\n      goog.dom.getTextContent_(child, buf, normalizeWhitespace);\n      child = child.nextSibling;\n    }\n  }\n};\n\n\n/**\n * Returns the text length of the text contained in a node, without markup. This\n * is equivalent to the selection length if the node was selected, or the number\n * of cursor movements to traverse the node. Images & BRs take one space.  New\n * lines are ignored.\n *\n * @param {Node} node The node whose text content length is being calculated.\n * @return {number} The length of `node`'s text content.\n */\ngoog.dom.getNodeTextLength = function(node) {\n  return goog.dom.getTextContent(node).length;\n};\n\n\n/**\n * Returns the text offset of a node relative to one of its ancestors. The text\n * length is the same as the length calculated by goog.dom.getNodeTextLength.\n *\n * @param {Node} node The node whose offset is being calculated.\n * @param {Node=} opt_offsetParent The node relative to which the offset will\n *     be calculated. Defaults to the node's owner document's body.\n * @return {number} The text offset.\n */\ngoog.dom.getNodeTextOffset = function(node, opt_offsetParent) {\n  var root = opt_offsetParent || goog.dom.getOwnerDocument(node).body;\n  var buf = [];\n  while (node && node != root) {\n    var cur = node;\n    while ((cur = cur.previousSibling)) {\n      buf.unshift(goog.dom.getTextContent(cur));\n    }\n    node = node.parentNode;\n  }\n  // Trim left to deal with FF cases when there might be line breaks and empty\n  // nodes at the front of the text\n  return goog.string.trimLeft(buf.join('')).replace(/ +/g, ' ').length;\n};\n\n\n/**\n * Returns the node at a given offset in a parent node.  If an object is\n * provided for the optional third parameter, the node and the remainder of the\n * offset will stored as properties of this object.\n * @param {Node} parent The parent node.\n * @param {number} offset The offset into the parent node.\n * @param {Object=} opt_result Object to be used to store the return value. The\n *     return value will be stored in the form {node: Node, remainder: number}\n *     if this object is provided.\n * @return {Node} The node at the given offset.\n */\ngoog.dom.getNodeAtOffset = function(parent, offset, opt_result) {\n  var stack = [parent], pos = 0, cur = null;\n  while (stack.length > 0 && pos < offset) {\n    cur = stack.pop();\n    if (cur.nodeName in goog.dom.TAGS_TO_IGNORE_) {\n      // ignore certain tags\n    } else if (cur.nodeType == goog.dom.NodeType.TEXT) {\n      var text = cur.nodeValue.replace(/(\\r\\n|\\r|\\n)/g, '').replace(/ +/g, ' ');\n      pos += text.length;\n    } else if (cur.nodeName in goog.dom.PREDEFINED_TAG_VALUES_) {\n      pos += goog.dom.PREDEFINED_TAG_VALUES_[cur.nodeName].length;\n    } else {\n      for (var i = cur.childNodes.length - 1; i >= 0; i--) {\n        stack.push(cur.childNodes[i]);\n      }\n    }\n  }\n  if (goog.isObject(opt_result)) {\n    opt_result.remainder = cur ? cur.nodeValue.length + offset - pos - 1 : 0;\n    opt_result.node = cur;\n  }\n\n  return cur;\n};\n\n\n/**\n * Returns true if the object is a `NodeList`.  To qualify as a NodeList,\n * the object must have a numeric length property and an item function (which\n * has type 'string' on IE for some reason).\n * @param {Object} val Object to test.\n * @return {boolean} Whether the object is a NodeList.\n */\ngoog.dom.isNodeList = function(val) {\n  // TODO(attila): Now the isNodeList is part of goog.dom we can use\n  // goog.userAgent to make this simpler.\n  // A NodeList must have a length property of type 'number' on all platforms.\n  if (val && typeof val.length == 'number') {\n    // A NodeList is an object everywhere except Safari, where it's a function.\n    if (goog.isObject(val)) {\n      // A NodeList must have an item function (on non-IE platforms) or an item\n      // property of type 'string' (on IE).\n      return typeof val.item == 'function' || typeof val.item == 'string';\n    } else if (goog.isFunction(val)) {\n      // On Safari, a NodeList is a function with an item property that is also\n      // a function.\n      return typeof /** @type {?} */ (val.item) == 'function';\n    }\n  }\n\n  // Not a NodeList.\n  return false;\n};\n\n\n/**\n * Walks up the DOM hierarchy returning the first ancestor that has the passed\n * tag name and/or class name. If the passed element matches the specified\n * criteria, the element itself is returned.\n * @param {Node} element The DOM node to start with.\n * @param {?(goog.dom.TagName<T>|string)=} opt_tag The tag name to match (or\n *     null/undefined to match only based on class name).\n * @param {?string=} opt_class The class name to match (or null/undefined to\n *     match only based on tag name).\n * @param {number=} opt_maxSearchSteps Maximum number of levels to search up the\n *     dom.\n * @return {?R} The first ancestor that matches the passed criteria, or\n *     null if no match is found. The return type is {?Element} if opt_tag is\n *     not a member of goog.dom.TagName or a more specific type if it is (e.g.\n *     {?HTMLAnchorElement} for goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n */\ngoog.dom.getAncestorByTagNameAndClass = function(\n    element, opt_tag, opt_class, opt_maxSearchSteps) {\n  if (!opt_tag && !opt_class) {\n    return null;\n  }\n  var tagName = opt_tag ? String(opt_tag).toUpperCase() : null;\n  return /** @type {Element} */ (goog.dom.getAncestor(element, function(node) {\n    return (!tagName || node.nodeName == tagName) &&\n        (!opt_class ||\n         typeof node.className === 'string' &&\n             goog.array.contains(node.className.split(/\\s+/), opt_class));\n  }, true, opt_maxSearchSteps));\n};\n\n\n/**\n * Walks up the DOM hierarchy returning the first ancestor that has the passed\n * class name. If the passed element matches the specified criteria, the\n * element itself is returned.\n * @param {Node} element The DOM node to start with.\n * @param {string} className The class name to match.\n * @param {number=} opt_maxSearchSteps Maximum number of levels to search up the\n *     dom.\n * @return {Element} The first ancestor that matches the passed criteria, or\n *     null if none match.\n */\ngoog.dom.getAncestorByClass = function(element, className, opt_maxSearchSteps) {\n  return goog.dom.getAncestorByTagNameAndClass(\n      element, null, className, opt_maxSearchSteps);\n};\n\n\n/**\n * Walks up the DOM hierarchy returning the first ancestor that passes the\n * matcher function.\n * @param {Node} element The DOM node to start with.\n * @param {function(Node) : boolean} matcher A function that returns true if the\n *     passed node matches the desired criteria.\n * @param {boolean=} opt_includeNode If true, the node itself is included in\n *     the search (the first call to the matcher will pass startElement as\n *     the node to test).\n * @param {number=} opt_maxSearchSteps Maximum number of levels to search up the\n *     dom.\n * @return {Node} DOM node that matched the matcher, or null if there was\n *     no match.\n */\ngoog.dom.getAncestor = function(\n    element, matcher, opt_includeNode, opt_maxSearchSteps) {\n  if (element && !opt_includeNode) {\n    element = element.parentNode;\n  }\n  var steps = 0;\n  while (element &&\n         (opt_maxSearchSteps == null || steps <= opt_maxSearchSteps)) {\n    goog.asserts.assert(element.name != 'parentNode');\n    if (matcher(element)) {\n      return element;\n    }\n    element = element.parentNode;\n    steps++;\n  }\n  // Reached the root of the DOM without a match\n  return null;\n};\n\n\n/**\n * Determines the active element in the given document.\n * @param {Document} doc The document to look in.\n * @return {Element} The active element.\n */\ngoog.dom.getActiveElement = function(doc) {\n  // While in an iframe, IE9 will throw \"Unspecified error\" when accessing\n  // activeElement.\n  try {\n    var activeElement = doc && doc.activeElement;\n    // While not in an iframe, IE9-11 sometimes gives null.\n    // While in an iframe, IE11 sometimes returns an empty object.\n    return activeElement && activeElement.nodeName ? activeElement : null;\n  } catch (e) {\n    return null;\n  }\n};\n\n\n/**\n * Gives the current devicePixelRatio.\n *\n * By default, this is the value of window.devicePixelRatio (which should be\n * preferred if present).\n *\n * If window.devicePixelRatio is not present, the ratio is calculated with\n * window.matchMedia, if present. Otherwise, gives 1.0.\n *\n * Some browsers (including Chrome) consider the browser zoom level in the pixel\n * ratio, so the value may change across multiple calls.\n *\n * @return {number} The number of actual pixels per virtual pixel.\n */\ngoog.dom.getPixelRatio = function() {\n  var win = goog.dom.getWindow();\n  if (win.devicePixelRatio !== undefined) {\n    return win.devicePixelRatio;\n  } else if (win.matchMedia) {\n    // Should be for IE10 and FF6-17 (this basically clamps to lower)\n    // Note that the order of these statements is important\n    return goog.dom.matchesPixelRatio_(3) || goog.dom.matchesPixelRatio_(2) ||\n           goog.dom.matchesPixelRatio_(1.5) || goog.dom.matchesPixelRatio_(1) ||\n           .75;\n  }\n  return 1;\n};\n\n\n/**\n * Calculates a mediaQuery to check if the current device supports the\n * given actual to virtual pixel ratio.\n * @param {number} pixelRatio The ratio of actual pixels to virtual pixels.\n * @return {number} pixelRatio if applicable, otherwise 0.\n * @private\n */\ngoog.dom.matchesPixelRatio_ = function(pixelRatio) {\n  var win = goog.dom.getWindow();\n  /**\n   * Due to the 1:96 fixed ratio of CSS in to CSS px, 1dppx is equivalent to\n   * 96dpi.\n   * @const {number}\n   */\n  var dpiPerDppx = 96;\n  var query =\n      // FF16-17\n      '(min-resolution: ' + pixelRatio + 'dppx),' +\n      // FF6-15\n      '(min--moz-device-pixel-ratio: ' + pixelRatio + '),' +\n      // IE10 (this works for the two browsers above too but I don't want to\n      // trust the 1:96 fixed ratio magic)\n      '(min-resolution: ' + (pixelRatio * dpiPerDppx) + 'dpi)';\n  return win.matchMedia(query).matches ? pixelRatio : 0;\n};\n\n\n/**\n * Gets '2d' context of a canvas. Shortcut for canvas.getContext('2d') with a\n * type information.\n * @param {!HTMLCanvasElement|!OffscreenCanvas} canvas\n * @return {!CanvasRenderingContext2D}\n */\ngoog.dom.getCanvasContext2D = function(canvas) {\n  return /** @type {!CanvasRenderingContext2D} */ (canvas.getContext('2d'));\n};\n\n\n\n/**\n * Create an instance of a DOM helper with a new document object.\n * @param {Document=} opt_document Document object to associate with this\n *     DOM helper.\n * @constructor\n */\ngoog.dom.DomHelper = function(opt_document) {\n  /**\n   * Reference to the document object to use\n   * @type {!Document}\n   * @private\n   */\n  this.document_ = opt_document || goog.global.document || document;\n};\n\n\n/**\n * Gets the dom helper object for the document where the element resides.\n * @param {Node=} opt_node If present, gets the DomHelper for this node.\n * @return {!goog.dom.DomHelper} The DomHelper.\n */\ngoog.dom.DomHelper.prototype.getDomHelper = goog.dom.getDomHelper;\n\n\n/**\n * Sets the document object.\n * @param {!Document} document Document object.\n */\ngoog.dom.DomHelper.prototype.setDocument = function(document) {\n  this.document_ = document;\n};\n\n\n/**\n * Gets the document object being used by the dom library.\n * @return {!Document} Document object.\n */\ngoog.dom.DomHelper.prototype.getDocument = function() {\n  return this.document_;\n};\n\n\n/**\n * Alias for `getElementById`. If a DOM node is passed in then we just\n * return that.\n * @param {string|Element} element Element ID or a DOM node.\n * @return {Element} The element with the given ID, or the node passed in.\n */\ngoog.dom.DomHelper.prototype.getElement = function(element) {\n  return goog.dom.getElementHelper_(this.document_, element);\n};\n\n\n/**\n * Gets an element by id, asserting that the element is found.\n *\n * This is used when an element is expected to exist, and should fail with\n * an assertion error if it does not (if assertions are enabled).\n *\n * @param {string} id Element ID.\n * @return {!Element} The element with the given ID, if it exists.\n */\ngoog.dom.DomHelper.prototype.getRequiredElement = function(id) {\n  return goog.dom.getRequiredElementHelper_(this.document_, id);\n};\n\n\n/**\n * Alias for `getElement`.\n * @param {string|Element} element Element ID or a DOM node.\n * @return {Element} The element with the given ID, or the node passed in.\n * @deprecated Use {@link goog.dom.DomHelper.prototype.getElement} instead.\n */\ngoog.dom.DomHelper.prototype.$ = goog.dom.DomHelper.prototype.getElement;\n\n\n/**\n * Gets elements by tag name.\n * @param {!goog.dom.TagName<T>} tagName\n * @param {(!Document|!Element)=} opt_parent Parent element or document where to\n *     look for elements. Defaults to document of this DomHelper.\n * @return {!NodeList<R>} List of elements. The members of the list are\n *     {!Element} if tagName is not a member of goog.dom.TagName or more\n *     specific types if it is (e.g. {!HTMLAnchorElement} for\n *     goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n */\ngoog.dom.DomHelper.prototype.getElementsByTagName =\n    function(tagName, opt_parent) {\n  var parent = opt_parent || this.document_;\n  return parent.getElementsByTagName(String(tagName));\n};\n\n\n/**\n * Looks up elements by both tag and class name, using browser native functions\n * (`querySelectorAll`, `getElementsByTagName` or\n * `getElementsByClassName`) where possible. The returned array is a live\n * NodeList or a static list depending on the code path taken.\n *\n * @param {(string|?goog.dom.TagName<T>)=} opt_tag Element tag name or * for all\n *     tags.\n * @param {?string=} opt_class Optional class name.\n * @param {(Document|Element)=} opt_el Optional element to look in.\n * @return {!IArrayLike<R>} Array-like list of elements (only a length property\n *     and numerical indices are guaranteed to exist). The members of the array\n *     are {!Element} if opt_tag is not a member of goog.dom.TagName or more\n *     specific types if it is (e.g. {!HTMLAnchorElement} for\n *     goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n */\ngoog.dom.DomHelper.prototype.getElementsByTagNameAndClass = function(\n    opt_tag, opt_class, opt_el) {\n  return goog.dom.getElementsByTagNameAndClass_(\n      this.document_, opt_tag, opt_class, opt_el);\n};\n\n\n/**\n * Gets the first element matching the tag and the class.\n *\n * @param {(string|?goog.dom.TagName<T>)=} opt_tag Element tag name.\n * @param {?string=} opt_class Optional class name.\n * @param {(Document|Element)=} opt_el Optional element to look in.\n * @return {?R} Reference to a DOM node. The return type is {?Element} if\n *     tagName is a string or a more specific type if it is a member of\n *     goog.dom.TagName (e.g. {?HTMLAnchorElement} for goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n */\ngoog.dom.DomHelper.prototype.getElementByTagNameAndClass = function(\n    opt_tag, opt_class, opt_el) {\n  return goog.dom.getElementByTagNameAndClass_(\n      this.document_, opt_tag, opt_class, opt_el);\n};\n\n\n/**\n * Returns an array of all the elements with the provided className.\n * @param {string} className the name of the class to look for.\n * @param {Element|Document=} opt_el Optional element to look in.\n * @return {!IArrayLike<!Element>} The items found with the class name provided.\n */\ngoog.dom.DomHelper.prototype.getElementsByClass = function(className, opt_el) {\n  var doc = opt_el || this.document_;\n  return goog.dom.getElementsByClass(className, doc);\n};\n\n\n/**\n * Returns the first element we find matching the provided class name.\n * @param {string} className the name of the class to look for.\n * @param {(Element|Document)=} opt_el Optional element to look in.\n * @return {Element} The first item found with the class name provided.\n */\ngoog.dom.DomHelper.prototype.getElementByClass = function(className, opt_el) {\n  var doc = opt_el || this.document_;\n  return goog.dom.getElementByClass(className, doc);\n};\n\n\n/**\n * Ensures an element with the given className exists, and then returns the\n * first element with the provided className.\n * @param {string} className the name of the class to look for.\n * @param {(!Element|!Document)=} opt_root Optional element or document to look\n *     in.\n * @return {!Element} The first item found with the class name provided.\n * @throws {goog.asserts.AssertionError} Thrown if no element is found.\n */\ngoog.dom.DomHelper.prototype.getRequiredElementByClass = function(\n    className, opt_root) {\n  var root = opt_root || this.document_;\n  return goog.dom.getRequiredElementByClass(className, root);\n};\n\n\n/**\n * Alias for `getElementsByTagNameAndClass`.\n * @deprecated Use DomHelper getElementsByTagNameAndClass.\n *\n * @param {(string|?goog.dom.TagName<T>)=} opt_tag Element tag name.\n * @param {?string=} opt_class Optional class name.\n * @param {Element=} opt_el Optional element to look in.\n * @return {!IArrayLike<R>} Array-like list of elements (only a length property\n *     and numerical indices are guaranteed to exist). The members of the array\n *     are {!Element} if opt_tag is a string or more specific types if it is\n *     a member of goog.dom.TagName (e.g. {!HTMLAnchorElement} for\n *     goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n */\ngoog.dom.DomHelper.prototype.$$ =\n    goog.dom.DomHelper.prototype.getElementsByTagNameAndClass;\n\n\n/**\n * Sets a number of properties on a node.\n * @param {Element} element DOM node to set properties on.\n * @param {Object} properties Hash of property:value pairs.\n */\ngoog.dom.DomHelper.prototype.setProperties = goog.dom.setProperties;\n\n\n/**\n * Gets the dimensions of the viewport.\n * @param {Window=} opt_window Optional window element to test. Defaults to\n *     the window of the Dom Helper.\n * @return {!goog.math.Size} Object with values 'width' and 'height'.\n */\ngoog.dom.DomHelper.prototype.getViewportSize = function(opt_window) {\n  // TODO(arv): This should not take an argument. That breaks the rule of a\n  // a DomHelper representing a single frame/window/document.\n  return goog.dom.getViewportSize(opt_window || this.getWindow());\n};\n\n\n/**\n * Calculates the height of the document.\n *\n * @return {number} The height of the document.\n */\ngoog.dom.DomHelper.prototype.getDocumentHeight = function() {\n  return goog.dom.getDocumentHeight_(this.getWindow());\n};\n\n\n/**\n * Typedef for use with goog.dom.createDom and goog.dom.append.\n * @typedef {Object|string|Array|NodeList}\n */\ngoog.dom.Appendable;\n\n\n/**\n * Returns a dom node with a set of attributes.  This function accepts varargs\n * for subsequent nodes to be added.  Subsequent nodes will be added to the\n * first node as childNodes.\n *\n * So:\n * <code>createDom(goog.dom.TagName.DIV, null, createDom(goog.dom.TagName.P),\n * createDom(goog.dom.TagName.P));</code> would return a div with two child\n * paragraphs\n *\n * An easy way to move all child nodes of an existing element to a new parent\n * element is:\n * <code>createDom(goog.dom.TagName.DIV, null, oldElement.childNodes);</code>\n * which will remove all child nodes from the old element and add them as\n * child nodes of the new DIV.\n *\n * @param {string|!goog.dom.TagName<T>} tagName Tag to create.\n * @param {?Object|?Array<string>|string=} opt_attributes If object, then a map\n *     of name-value pairs for attributes. If a string, then this is the\n *     className of the new element. If an array, the elements will be joined\n *     together as the className of the new element.\n * @param {...(goog.dom.Appendable|undefined)} var_args Further DOM nodes or\n *     strings for text nodes. If one of the var_args is an array or\n *     NodeList, its elements will be added as childNodes instead.\n * @return {R} Reference to a DOM node. The return type is {!Element} if tagName\n *     is a string or a more specific type if it is a member of\n *     goog.dom.TagName (e.g. {!HTMLAnchorElement} for goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n */\ngoog.dom.DomHelper.prototype.createDom = function(\n    tagName, opt_attributes, var_args) {\n  return goog.dom.createDom_(this.document_, arguments);\n};\n\n\n/**\n * Alias for `createDom`.\n * @param {string|!goog.dom.TagName<T>} tagName Tag to create.\n * @param {?Object|?Array<string>|string=} opt_attributes If object, then a map\n *     of name-value pairs for attributes. If a string, then this is the\n *     className of the new element. If an array, the elements will be joined\n *     together as the className of the new element.\n * @param {...(goog.dom.Appendable|undefined)} var_args Further DOM nodes or\n *     strings for text nodes.  If one of the var_args is an array, its children\n *     will be added as childNodes instead.\n * @return {R} Reference to a DOM node. The return type is {!Element} if tagName\n *     is a string or a more specific type if it is a member of\n *     goog.dom.TagName (e.g. {!HTMLAnchorElement} for goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n * @deprecated Use {@link goog.dom.DomHelper.prototype.createDom} instead.\n */\ngoog.dom.DomHelper.prototype.$dom = goog.dom.DomHelper.prototype.createDom;\n\n\n/**\n * Creates a new element.\n * @param {string|!goog.dom.TagName<T>} name Tag to create.\n * @return {R} The new element. The return type is {!Element} if name is\n *     a string or a more specific type if it is a member of goog.dom.TagName\n *     (e.g. {!HTMLAnchorElement} for goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n */\ngoog.dom.DomHelper.prototype.createElement = function(name) {\n  return goog.dom.createElement_(this.document_, name);\n};\n\n\n/**\n * Creates a new text node.\n * @param {number|string} content Content.\n * @return {!Text} The new text node.\n */\ngoog.dom.DomHelper.prototype.createTextNode = function(content) {\n  return this.document_.createTextNode(String(content));\n};\n\n\n/**\n * Create a table.\n * @param {number} rows The number of rows in the table.  Must be >= 1.\n * @param {number} columns The number of columns in the table.  Must be >= 1.\n * @param {boolean=} opt_fillWithNbsp If true, fills table entries with\n *     `goog.string.Unicode.NBSP` characters.\n * @return {!HTMLElement} The created table.\n */\ngoog.dom.DomHelper.prototype.createTable = function(\n    rows, columns, opt_fillWithNbsp) {\n  return goog.dom.createTable_(\n      this.document_, rows, columns, !!opt_fillWithNbsp);\n};\n\n\n/**\n * Converts an HTML into a node or a document fragment. A single Node is used if\n * `html` only generates a single node. If `html` generates multiple\n * nodes then these are put inside a `DocumentFragment`. This is a safe\n * version of `goog.dom.DomHelper#htmlToDocumentFragment` which is now\n * deleted.\n * @param {!goog.html.SafeHtml} html The HTML markup to convert.\n * @return {!Node} The resulting node.\n */\ngoog.dom.DomHelper.prototype.safeHtmlToNode = function(html) {\n  return goog.dom.safeHtmlToNode_(this.document_, html);\n};\n\n\n/**\n * Returns true if the browser is in \"CSS1-compatible\" (standards-compliant)\n * mode, false otherwise.\n * @return {boolean} True if in CSS1-compatible mode.\n */\ngoog.dom.DomHelper.prototype.isCss1CompatMode = function() {\n  return goog.dom.isCss1CompatMode_(this.document_);\n};\n\n\n/**\n * Gets the window object associated with the document.\n * @return {!Window} The window associated with the given document.\n */\ngoog.dom.DomHelper.prototype.getWindow = function() {\n  return goog.dom.getWindow_(this.document_);\n};\n\n\n/**\n * Gets the document scroll element.\n * @return {!Element} Scrolling element.\n */\ngoog.dom.DomHelper.prototype.getDocumentScrollElement = function() {\n  return goog.dom.getDocumentScrollElement_(this.document_);\n};\n\n\n/**\n * Gets the document scroll distance as a coordinate object.\n * @return {!goog.math.Coordinate} Object with properties 'x' and 'y'.\n */\ngoog.dom.DomHelper.prototype.getDocumentScroll = function() {\n  return goog.dom.getDocumentScroll_(this.document_);\n};\n\n\n/**\n * Determines the active element in the given document.\n * @param {Document=} opt_doc The document to look in.\n * @return {Element} The active element.\n */\ngoog.dom.DomHelper.prototype.getActiveElement = function(opt_doc) {\n  return goog.dom.getActiveElement(opt_doc || this.document_);\n};\n\n\n/**\n * Appends a child to a node.\n * @param {Node} parent Parent.\n * @param {Node} child Child.\n */\ngoog.dom.DomHelper.prototype.appendChild = goog.dom.appendChild;\n\n\n/**\n * Appends a node with text or other nodes.\n * @param {!Node} parent The node to append nodes to.\n * @param {...goog.dom.Appendable} var_args The things to append to the node.\n *     If this is a Node it is appended as is.\n *     If this is a string then a text node is appended.\n *     If this is an array like object then fields 0 to length - 1 are appended.\n */\ngoog.dom.DomHelper.prototype.append = goog.dom.append;\n\n\n/**\n * Determines if the given node can contain children, intended to be used for\n * HTML generation.\n *\n * @param {Node} node The node to check.\n * @return {boolean} Whether the node can contain children.\n */\ngoog.dom.DomHelper.prototype.canHaveChildren = goog.dom.canHaveChildren;\n\n\n/**\n * Removes all the child nodes on a DOM node.\n * @param {Node} node Node to remove children from.\n */\ngoog.dom.DomHelper.prototype.removeChildren = goog.dom.removeChildren;\n\n\n/**\n * Inserts a new node before an existing reference node (i.e., as the previous\n * sibling). If the reference node has no parent, then does nothing.\n * @param {Node} newNode Node to insert.\n * @param {Node} refNode Reference node to insert before.\n */\ngoog.dom.DomHelper.prototype.insertSiblingBefore = goog.dom.insertSiblingBefore;\n\n\n/**\n * Inserts a new node after an existing reference node (i.e., as the next\n * sibling). If the reference node has no parent, then does nothing.\n * @param {Node} newNode Node to insert.\n * @param {Node} refNode Reference node to insert after.\n */\ngoog.dom.DomHelper.prototype.insertSiblingAfter = goog.dom.insertSiblingAfter;\n\n\n/**\n * Insert a child at a given index. If index is larger than the number of child\n * nodes that the parent currently has, the node is inserted as the last child\n * node.\n * @param {Element} parent The element into which to insert the child.\n * @param {Node} child The element to insert.\n * @param {number} index The index at which to insert the new child node. Must\n *     not be negative.\n */\ngoog.dom.DomHelper.prototype.insertChildAt = goog.dom.insertChildAt;\n\n\n/**\n * Removes a node from its parent.\n * @param {Node} node The node to remove.\n * @return {Node} The node removed if removed; else, null.\n */\ngoog.dom.DomHelper.prototype.removeNode = goog.dom.removeNode;\n\n\n/**\n * Replaces a node in the DOM tree. Will do nothing if `oldNode` has no\n * parent.\n * @param {Node} newNode Node to insert.\n * @param {Node} oldNode Node to replace.\n */\ngoog.dom.DomHelper.prototype.replaceNode = goog.dom.replaceNode;\n\n\n/**\n * Replaces child nodes of `target` with child nodes of `source`. This is\n * roughly equivalent to `target.innerHTML = source.innerHTML` which is not\n * compatible with Trusted Types.\n * @param {?Node} target Node to clean and replace its children.\n * @param {?Node} source Node to get the children from. The nodes will be cloned\n *     so they will stay in source.\n */\ngoog.dom.DomHelper.prototype.copyContents = goog.dom.copyContents;\n\n\n/**\n * Flattens an element. That is, removes it and replace it with its children.\n * @param {Element} element The element to flatten.\n * @return {Element|undefined} The original element, detached from the document\n *     tree, sans children, or undefined if the element was already not in the\n *     document.\n */\ngoog.dom.DomHelper.prototype.flattenElement = goog.dom.flattenElement;\n\n\n/**\n * Returns an array containing just the element children of the given element.\n * @param {Element} element The element whose element children we want.\n * @return {!(Array<!Element>|NodeList<!Element>)} An array or array-like list\n *     of just the element children of the given element.\n */\ngoog.dom.DomHelper.prototype.getChildren = goog.dom.getChildren;\n\n\n/**\n * Returns the first child node that is an element.\n * @param {Node} node The node to get the first child element of.\n * @return {Element} The first child node of `node` that is an element.\n */\ngoog.dom.DomHelper.prototype.getFirstElementChild =\n    goog.dom.getFirstElementChild;\n\n\n/**\n * Returns the last child node that is an element.\n * @param {Node} node The node to get the last child element of.\n * @return {Element} The last child node of `node` that is an element.\n */\ngoog.dom.DomHelper.prototype.getLastElementChild = goog.dom.getLastElementChild;\n\n\n/**\n * Returns the first next sibling that is an element.\n * @param {Node} node The node to get the next sibling element of.\n * @return {Element} The next sibling of `node` that is an element.\n */\ngoog.dom.DomHelper.prototype.getNextElementSibling =\n    goog.dom.getNextElementSibling;\n\n\n/**\n * Returns the first previous sibling that is an element.\n * @param {Node} node The node to get the previous sibling element of.\n * @return {Element} The first previous sibling of `node` that is\n *     an element.\n */\ngoog.dom.DomHelper.prototype.getPreviousElementSibling =\n    goog.dom.getPreviousElementSibling;\n\n\n/**\n * Returns the next node in source order from the given node.\n * @param {Node} node The node.\n * @return {Node} The next node in the DOM tree, or null if this was the last\n *     node.\n */\ngoog.dom.DomHelper.prototype.getNextNode = goog.dom.getNextNode;\n\n\n/**\n * Returns the previous node in source order from the given node.\n * @param {Node} node The node.\n * @return {Node} The previous node in the DOM tree, or null if this was the\n *     first node.\n */\ngoog.dom.DomHelper.prototype.getPreviousNode = goog.dom.getPreviousNode;\n\n\n/**\n * Whether the object looks like a DOM node.\n * @param {?} obj The object being tested for node likeness.\n * @return {boolean} Whether the object looks like a DOM node.\n */\ngoog.dom.DomHelper.prototype.isNodeLike = goog.dom.isNodeLike;\n\n\n/**\n * Whether the object looks like an Element.\n * @param {?} obj The object being tested for Element likeness.\n * @return {boolean} Whether the object looks like an Element.\n */\ngoog.dom.DomHelper.prototype.isElement = goog.dom.isElement;\n\n\n/**\n * Returns true if the specified value is a Window object. This includes the\n * global window for HTML pages, and iframe windows.\n * @param {?} obj Variable to test.\n * @return {boolean} Whether the variable is a window.\n */\ngoog.dom.DomHelper.prototype.isWindow = goog.dom.isWindow;\n\n\n/**\n * Returns an element's parent, if it's an Element.\n * @param {Element} element The DOM element.\n * @return {Element} The parent, or null if not an Element.\n */\ngoog.dom.DomHelper.prototype.getParentElement = goog.dom.getParentElement;\n\n\n/**\n * Whether a node contains another node.\n * @param {Node} parent The node that should contain the other node.\n * @param {Node} descendant The node to test presence of.\n * @return {boolean} Whether the parent node contains the descendant node.\n */\ngoog.dom.DomHelper.prototype.contains = goog.dom.contains;\n\n\n/**\n * Compares the document order of two nodes, returning 0 if they are the same\n * node, a negative number if node1 is before node2, and a positive number if\n * node2 is before node1.  Note that we compare the order the tags appear in the\n * document so in the tree <b><i>text</i></b> the B node is considered to be\n * before the I node.\n *\n * @param {Node} node1 The first node to compare.\n * @param {Node} node2 The second node to compare.\n * @return {number} 0 if the nodes are the same node, a negative number if node1\n *     is before node2, and a positive number if node2 is before node1.\n */\ngoog.dom.DomHelper.prototype.compareNodeOrder = goog.dom.compareNodeOrder;\n\n\n/**\n * Find the deepest common ancestor of the given nodes.\n * @param {...Node} var_args The nodes to find a common ancestor of.\n * @return {Node} The common ancestor of the nodes, or null if there is none.\n *     null will only be returned if two or more of the nodes are from different\n *     documents.\n */\ngoog.dom.DomHelper.prototype.findCommonAncestor = goog.dom.findCommonAncestor;\n\n\n/**\n * Returns the owner document for a node.\n * @param {Node} node The node to get the document for.\n * @return {!Document} The document owning the node.\n */\ngoog.dom.DomHelper.prototype.getOwnerDocument = goog.dom.getOwnerDocument;\n\n\n/**\n * Cross browser function for getting the document element of an iframe.\n * @param {Element} iframe Iframe element.\n * @return {!Document} The frame content document.\n */\ngoog.dom.DomHelper.prototype.getFrameContentDocument =\n    goog.dom.getFrameContentDocument;\n\n\n/**\n * Cross browser function for getting the window of a frame or iframe.\n * @param {Element} frame Frame element.\n * @return {Window} The window associated with the given frame.\n */\ngoog.dom.DomHelper.prototype.getFrameContentWindow =\n    goog.dom.getFrameContentWindow;\n\n\n/**\n * Sets the text content of a node, with cross-browser support.\n * @param {Node} node The node to change the text content of.\n * @param {string|number} text The value that should replace the node's content.\n */\ngoog.dom.DomHelper.prototype.setTextContent = goog.dom.setTextContent;\n\n\n/**\n * Gets the outerHTML of a node, which islike innerHTML, except that it\n * actually contains the HTML of the node itself.\n * @param {Element} element The element to get the HTML of.\n * @return {string} The outerHTML of the given element.\n */\ngoog.dom.DomHelper.prototype.getOuterHtml = goog.dom.getOuterHtml;\n\n\n/**\n * Finds the first descendant node that matches the filter function. This does\n * a depth first search.\n * @param {Node} root The root of the tree to search.\n * @param {function(Node) : boolean} p The filter function.\n * @return {Node|undefined} The found node or undefined if none is found.\n */\ngoog.dom.DomHelper.prototype.findNode = goog.dom.findNode;\n\n\n/**\n * Finds all the descendant nodes that matches the filter function. This does a\n * depth first search.\n * @param {Node} root The root of the tree to search.\n * @param {function(Node) : boolean} p The filter function.\n * @return {Array<Node>} The found nodes or an empty array if none are found.\n */\ngoog.dom.DomHelper.prototype.findNodes = goog.dom.findNodes;\n\n\n/**\n * Returns true if the element has a tab index that allows it to receive\n * keyboard focus (tabIndex >= 0), false otherwise.  Note that some elements\n * natively support keyboard focus, even if they have no tab index.\n * @param {!Element} element Element to check.\n * @return {boolean} Whether the element has a tab index that allows keyboard\n *     focus.\n */\ngoog.dom.DomHelper.prototype.isFocusableTabIndex = goog.dom.isFocusableTabIndex;\n\n\n/**\n * Enables or disables keyboard focus support on the element via its tab index.\n * Only elements for which {@link goog.dom.isFocusableTabIndex} returns true\n * (or elements that natively support keyboard focus, like form elements) can\n * receive keyboard focus.  See http://go/tabindex for more info.\n * @param {Element} element Element whose tab index is to be changed.\n * @param {boolean} enable Whether to set or remove a tab index on the element\n *     that supports keyboard focus.\n */\ngoog.dom.DomHelper.prototype.setFocusableTabIndex =\n    goog.dom.setFocusableTabIndex;\n\n\n/**\n * Returns true if the element can be focused, i.e. it has a tab index that\n * allows it to receive keyboard focus (tabIndex >= 0), or it is an element\n * that natively supports keyboard focus.\n * @param {!Element} element Element to check.\n * @return {boolean} Whether the element allows keyboard focus.\n */\ngoog.dom.DomHelper.prototype.isFocusable = goog.dom.isFocusable;\n\n\n/**\n * Returns the text contents of the current node, without markup. New lines are\n * stripped and whitespace is collapsed, such that each character would be\n * visible.\n *\n * In browsers that support it, innerText is used.  Other browsers attempt to\n * simulate it via node traversal.  Line breaks are canonicalized in IE.\n *\n * @param {Node} node The node from which we are getting content.\n * @return {string} The text content.\n */\ngoog.dom.DomHelper.prototype.getTextContent = goog.dom.getTextContent;\n\n\n/**\n * Returns the text length of the text contained in a node, without markup. This\n * is equivalent to the selection length if the node was selected, or the number\n * of cursor movements to traverse the node. Images & BRs take one space.  New\n * lines are ignored.\n *\n * @param {Node} node The node whose text content length is being calculated.\n * @return {number} The length of `node`'s text content.\n */\ngoog.dom.DomHelper.prototype.getNodeTextLength = goog.dom.getNodeTextLength;\n\n\n/**\n * Returns the text offset of a node relative to one of its ancestors. The text\n * length is the same as the length calculated by\n * `goog.dom.getNodeTextLength`.\n *\n * @param {Node} node The node whose offset is being calculated.\n * @param {Node=} opt_offsetParent Defaults to the node's owner document's body.\n * @return {number} The text offset.\n */\ngoog.dom.DomHelper.prototype.getNodeTextOffset = goog.dom.getNodeTextOffset;\n\n\n/**\n * Returns the node at a given offset in a parent node.  If an object is\n * provided for the optional third parameter, the node and the remainder of the\n * offset will stored as properties of this object.\n * @param {Node} parent The parent node.\n * @param {number} offset The offset into the parent node.\n * @param {Object=} opt_result Object to be used to store the return value. The\n *     return value will be stored in the form {node: Node, remainder: number}\n *     if this object is provided.\n * @return {Node} The node at the given offset.\n */\ngoog.dom.DomHelper.prototype.getNodeAtOffset = goog.dom.getNodeAtOffset;\n\n\n/**\n * Returns true if the object is a `NodeList`.  To qualify as a NodeList,\n * the object must have a numeric length property and an item function (which\n * has type 'string' on IE for some reason).\n * @param {Object} val Object to test.\n * @return {boolean} Whether the object is a NodeList.\n */\ngoog.dom.DomHelper.prototype.isNodeList = goog.dom.isNodeList;\n\n\n/**\n * Walks up the DOM hierarchy returning the first ancestor that has the passed\n * tag name and/or class name. If the passed element matches the specified\n * criteria, the element itself is returned.\n * @param {Node} element The DOM node to start with.\n * @param {?(goog.dom.TagName<T>|string)=} opt_tag The tag name to match (or\n *     null/undefined to match only based on class name).\n * @param {?string=} opt_class The class name to match (or null/undefined to\n *     match only based on tag name).\n * @param {number=} opt_maxSearchSteps Maximum number of levels to search up the\n *     dom.\n * @return {?R} The first ancestor that matches the passed criteria, or\n *     null if no match is found. The return type is {?Element} if opt_tag is\n *     not a member of goog.dom.TagName or a more specific type if it is (e.g.\n *     {?HTMLAnchorElement} for goog.dom.TagName.A).\n * @template T\n * @template R := cond(isUnknown(T), 'Element', T) =:\n */\ngoog.dom.DomHelper.prototype.getAncestorByTagNameAndClass =\n    goog.dom.getAncestorByTagNameAndClass;\n\n\n/**\n * Walks up the DOM hierarchy returning the first ancestor that has the passed\n * class name. If the passed element matches the specified criteria, the\n * element itself is returned.\n * @param {Node} element The DOM node to start with.\n * @param {string} class The class name to match.\n * @param {number=} opt_maxSearchSteps Maximum number of levels to search up the\n *     dom.\n * @return {Element} The first ancestor that matches the passed criteria, or\n *     null if none match.\n */\ngoog.dom.DomHelper.prototype.getAncestorByClass = goog.dom.getAncestorByClass;\n\n\n/**\n * Walks up the DOM hierarchy returning the first ancestor that passes the\n * matcher function.\n * @param {Node} element The DOM node to start with.\n * @param {function(Node) : boolean} matcher A function that returns true if the\n *     passed node matches the desired criteria.\n * @param {boolean=} opt_includeNode If true, the node itself is included in\n *     the search (the first call to the matcher will pass startElement as\n *     the node to test).\n * @param {number=} opt_maxSearchSteps Maximum number of levels to search up the\n *     dom.\n * @return {Node} DOM node that matched the matcher, or null if there was\n *     no match.\n */\ngoog.dom.DomHelper.prototype.getAncestor = goog.dom.getAncestor;\n\n\n/**\n * Gets '2d' context of a canvas. Shortcut for canvas.getContext('2d') with a\n * type information.\n * @param {!HTMLCanvasElement} canvas\n * @return {!CanvasRenderingContext2D}\n */\ngoog.dom.DomHelper.prototype.getCanvasContext2D = goog.dom.getCanvasContext2D;\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Provides a function to schedule running a function as soon\n * as possible after the current JS execution stops and yields to the event\n * loop.\n */\n\ngoog.provide('goog.async.nextTick');\ngoog.provide('goog.async.throwException');\n\ngoog.require('goog.debug.entryPointRegistry');\ngoog.require('goog.dom');\ngoog.require('goog.dom.TagName');\ngoog.require('goog.functions');\ngoog.require('goog.labs.userAgent.browser');\ngoog.require('goog.labs.userAgent.engine');\n\n\n/**\n * Throw an item without interrupting the current execution context.  For\n * example, if processing a group of items in a loop, sometimes it is useful\n * to report an error while still allowing the rest of the batch to be\n * processed.\n * @param {*} exception\n */\ngoog.async.throwException = function(exception) {\n  // Each throw needs to be in its own context.\n  goog.global.setTimeout(function() { throw exception; }, 0);\n};\n\n\n/**\n * Fires the provided callbacks as soon as possible after the current JS\n * execution context. setTimeout(…, 0) takes at least 4ms when called from\n * within another setTimeout(…, 0) for legacy reasons.\n *\n * This will not schedule the callback as a microtask (i.e. a task that can\n * preempt user input or networking callbacks). It is meant to emulate what\n * setTimeout(_, 0) would do if it were not throttled. If you desire microtask\n * behavior, use {@see goog.Promise} instead.\n *\n * @param {function(this:SCOPE)} callback Callback function to fire as soon as\n *     possible.\n * @param {SCOPE=} opt_context Object in whose scope to call the listener.\n * @param {boolean=} opt_useSetImmediate Avoid the IE workaround that\n *     ensures correctness at the cost of speed. See comments for details.\n * @template SCOPE\n */\ngoog.async.nextTick = function(callback, opt_context, opt_useSetImmediate) {\n  var cb = callback;\n  if (opt_context) {\n    cb = goog.bind(callback, opt_context);\n  }\n  cb = goog.async.nextTick.wrapCallback_(cb);\n  // Note we do allow callers to also request setImmediate if they are willing\n  // to accept the possible tradeoffs of incorrectness in exchange for speed.\n  // The IE fallback of readystate change is much slower. See useSetImmediate_\n  // for details.\n  if (goog.isFunction(goog.global.setImmediate) &&\n      (opt_useSetImmediate || goog.async.nextTick.useSetImmediate_())) {\n    goog.global.setImmediate(cb);\n    return;\n  }\n\n  // Look for and cache the custom fallback version of setImmediate.\n  if (!goog.async.nextTick.setImmediate_) {\n    goog.async.nextTick.setImmediate_ =\n        goog.async.nextTick.getSetImmediateEmulator_();\n  }\n  goog.async.nextTick.setImmediate_(cb);\n};\n\n\n/**\n * Returns whether should use setImmediate implementation currently on window.\n *\n * window.setImmediate was introduced and currently only supported by IE10+,\n * but due to a bug in the implementation it is not guaranteed that\n * setImmediate is faster than setTimeout nor that setImmediate N is before\n * setImmediate N+1. That is why we do not use the native version if\n * available. We do, however, call setImmediate if it is a non-native function\n * because that indicates that it has been replaced by goog.testing.MockClock\n * which we do want to support.\n * See\n * http://connect.microsoft.com/IE/feedback/details/801823/setimmediate-and-messagechannel-are-broken-in-ie10\n *\n * @return {boolean} Whether to use the implementation of setImmediate defined\n *     on Window.\n * @private\n * @suppress {missingProperties} For \"Window.prototype.setImmediate\"\n */\ngoog.async.nextTick.useSetImmediate_ = function() {\n  // Not a browser environment.\n  if (!goog.global.Window || !goog.global.Window.prototype) {\n    return true;\n  }\n\n  // MS Edge has window.setImmediate natively, but it's not on Window.prototype.\n  // Also, there's no clean way to detect if the goog.global.setImmediate has\n  // been replaced by mockClock as its replacement also shows up as \"[native\n  // code]\" when using toString. Therefore, just always use\n  // goog.global.setImmediate for Edge. It's unclear if it suffers the same\n  // issues as IE10/11, but based on\n  // https://dev.modern.ie/testdrive/demos/setimmediatesorting/\n  // it seems they've been working to ensure it's WAI.\n  if (goog.labs.userAgent.browser.isEdge() ||\n      goog.global.Window.prototype.setImmediate != goog.global.setImmediate) {\n    // Something redefined setImmediate in which case we decide to use it (This\n    // is so that we use the mockClock setImmediate).\n    return true;\n  }\n\n  return false;\n};\n\n\n/**\n * Cache for the setImmediate implementation.\n * @type {function(function())}\n * @private\n */\ngoog.async.nextTick.setImmediate_;\n\n\n/**\n * Determines the best possible implementation to run a function as soon as\n * the JS event loop is idle.\n * @return {function(function())} The \"setImmediate\" implementation.\n * @private\n */\ngoog.async.nextTick.getSetImmediateEmulator_ = function() {\n  // Create a private message channel and use it to postMessage empty messages\n  // to ourselves.\n  /** @type {!Function|undefined} */\n  var Channel = goog.global['MessageChannel'];\n  // If MessageChannel is not available and we are in a browser, implement\n  // an iframe based polyfill in browsers that have postMessage and\n  // document.addEventListener. The latter excludes IE8 because it has a\n  // synchronous postMessage implementation.\n  if (typeof Channel === 'undefined' && typeof window !== 'undefined' &&\n      window.postMessage && window.addEventListener &&\n      // Presto (The old pre-blink Opera engine) has problems with iframes\n      // and contentWindow.\n      !goog.labs.userAgent.engine.isPresto()) {\n    /** @constructor */\n    Channel = function() {\n      // Make an empty, invisible iframe.\n      var iframe = goog.dom.createElement(goog.dom.TagName.IFRAME);\n      iframe.style.display = 'none';\n      document.documentElement.appendChild(iframe);\n      var win = iframe.contentWindow;\n      var doc = win.document;\n      doc.open();\n      doc.close();\n      // Do not post anything sensitive over this channel, as the workaround for\n      // pages with file: origin could allow that information to be modified or\n      // intercepted.\n      var message = 'callImmediate' + Math.random();\n      // The same origin policy rejects attempts to postMessage from file: urls\n      // unless the origin is '*'.\n      var origin = win.location.protocol == 'file:' ?\n          '*' :\n          win.location.protocol + '//' + win.location.host;\n      var onmessage = goog.bind(function(e) {\n        // Validate origin and message to make sure that this message was\n        // intended for us. If the origin is set to '*' (see above) only the\n        // message needs to match since, for example, '*' != 'file://'. Allowing\n        // the wildcard is ok, as we are not concerned with security here.\n        if ((origin != '*' && e.origin != origin) || e.data != message) {\n          return;\n        }\n        this['port1'].onmessage();\n      }, this);\n      win.addEventListener('message', onmessage, false);\n      this['port1'] = {};\n      this['port2'] = {\n        postMessage: function() { win.postMessage(message, origin); }\n      };\n    };\n  }\n  if (typeof Channel !== 'undefined' && !goog.labs.userAgent.browser.isIE()) {\n    // Exclude all of IE due to\n    // http://codeforhire.com/2013/09/21/setimmediate-and-messagechannel-broken-on-internet-explorer-10/\n    // which allows starving postMessage with a busy setTimeout loop.\n    // This currently affects IE10 and IE11 which would otherwise be able\n    // to use the postMessage based fallbacks.\n    var channel = new Channel();\n    // Use a fifo linked list to call callbacks in the right order.\n    var head = {};\n    var tail = head;\n    channel['port1'].onmessage = function() {\n      if (head.next !== undefined) {\n        head = head.next;\n        var cb = head.cb;\n        head.cb = null;\n        cb();\n      }\n    };\n    return function(cb) {\n      tail.next = {cb: cb};\n      tail = tail.next;\n      channel['port2'].postMessage(0);\n    };\n  }\n  // Fall back to setTimeout with 0. In browsers this creates a delay of 5ms\n  // or more.\n  // NOTE(user): This fallback is used for IE.\n  return function(cb) {\n    goog.global.setTimeout(/** @type {function()} */ (cb), 0);\n  };\n};\n\n\n/**\n * Helper function that is overrided to protect callbacks with entry point\n * monitor if the application monitors entry points.\n * @param {function()} callback Callback function to fire as soon as possible.\n * @return {function()} The wrapped callback.\n * @private\n */\ngoog.async.nextTick.wrapCallback_ = goog.functions.identity;\n\n\n// Register the callback function as an entry point, so that it can be\n// monitored for exception handling, etc. This has to be done in this file\n// since it requires special code to handle all browsers.\ngoog.debug.entryPointRegistry.register(\n    /**\n     * @param {function(!Function): !Function} transformer The transforming\n     *     function.\n     */\n    function(transformer) { goog.async.nextTick.wrapCallback_ = transformer; });\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Defines the goog.dom.TagName class. Its constants enumerate\n * all HTML tag names specified in either the W3C HTML 4.01 index of elements\n * or the HTML5.1 specification.\n *\n * References:\n * https://www.w3.org/TR/html401/index/elements.html\n * https://www.w3.org/TR/html51/dom.html#elements\n */\ngoog.provide('goog.dom.TagName');\n\ngoog.require('goog.dom.HtmlElement');\n\n/**\n * A tag name for an HTML element.\n *\n * This type is a lie. All instances are actually strings. Do not implement it.\n *\n * It exists because we need an object type to host the template type parameter,\n * and that's not possible with literal or enum types. It is a record type so\n * that runtime type checks don't try to validate the lie.\n *\n * Closure Compiler unconditionally converts the following constants to their\n * string value (goog.dom.TagName.A -> 'A'). These are the consequences:\n * 1. Don't add any members or static members to goog.dom.TagName as they\n *    couldn't be accessed after this optimization.\n * 2. Keep the constant name and its string value the same:\n *    goog.dom.TagName.X = new goog.dom.TagName('Y');\n *    is converted to 'X', not 'Y'.\n *\n * @template T\n * @record\n */\ngoog.dom.TagName = class {\n  /**\n   * Cast a string into the tagname for the associated constructor.\n   *\n   * @template T\n   * @param {string} name\n   * @param {function(new:T, ...?)} type\n   * @return {!goog.dom.TagName<T>}\n   */\n  static cast(name, type) {\n    return /** @type {?} */ (name);\n  }\n\n  /** @suppress {unusedPrivateMembers} */\n  constructor() {\n    /** @private {null} */\n    this.googDomTagName_doNotImplementThisTypeOrElse_;\n\n    /** @private {T} */\n    this.ensureTypeScriptRemembersTypeT_;\n  }\n\n  /**\n   * Appease the compiler that instances are stringafiable for the\n   * purpose of being a dictionary key.\n   *\n   * Never implemented; always backed by `String::toString`.\n   *\n   * @override\n   * @return {string}\n   */\n  toString() {}\n};\n\n\n\n/** @const {!goog.dom.TagName<!HTMLAnchorElement>} */\ngoog.dom.TagName.A = /** @type {?} */ ('A');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.ABBR = /** @type {?} */ ('ABBR');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.ACRONYM = /** @type {?} */ ('ACRONYM');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.ADDRESS = /** @type {?} */ ('ADDRESS');\n\n/** @const {!goog.dom.TagName<!HTMLAppletElement>} */\ngoog.dom.TagName.APPLET = /** @type {?} */ ('APPLET');\n\n/** @const {!goog.dom.TagName<!HTMLAreaElement>} */\ngoog.dom.TagName.AREA = /** @type {?} */ ('AREA');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.ARTICLE = /** @type {?} */ ('ARTICLE');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.ASIDE = /** @type {?} */ ('ASIDE');\n\n/** @const {!goog.dom.TagName<!HTMLAudioElement>} */\ngoog.dom.TagName.AUDIO = /** @type {?} */ ('AUDIO');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.B = /** @type {?} */ ('B');\n\n/** @const {!goog.dom.TagName<!HTMLBaseElement>} */\ngoog.dom.TagName.BASE = /** @type {?} */ ('BASE');\n\n/** @const {!goog.dom.TagName<!HTMLBaseFontElement>} */\ngoog.dom.TagName.BASEFONT = /** @type {?} */ ('BASEFONT');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.BDI = /** @type {?} */ ('BDI');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.BDO = /** @type {?} */ ('BDO');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.BIG = /** @type {?} */ ('BIG');\n\n/** @const {!goog.dom.TagName<!HTMLQuoteElement>} */\ngoog.dom.TagName.BLOCKQUOTE = /** @type {?} */ ('BLOCKQUOTE');\n\n/** @const {!goog.dom.TagName<!HTMLBodyElement>} */\ngoog.dom.TagName.BODY = /** @type {?} */ ('BODY');\n\n/** @const {!goog.dom.TagName<!HTMLBRElement>} */\ngoog.dom.TagName.BR = /** @type {?} */ ('BR');\n\n/** @const {!goog.dom.TagName<!HTMLButtonElement>} */\ngoog.dom.TagName.BUTTON = /** @type {?} */ ('BUTTON');\n\n/** @const {!goog.dom.TagName<!HTMLCanvasElement>} */\ngoog.dom.TagName.CANVAS = /** @type {?} */ ('CANVAS');\n\n/** @const {!goog.dom.TagName<!HTMLTableCaptionElement>} */\ngoog.dom.TagName.CAPTION = /** @type {?} */ ('CAPTION');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.CENTER = /** @type {?} */ ('CENTER');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.CITE = /** @type {?} */ ('CITE');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.CODE = /** @type {?} */ ('CODE');\n\n/** @const {!goog.dom.TagName<!HTMLTableColElement>} */\ngoog.dom.TagName.COL = /** @type {?} */ ('COL');\n\n/** @const {!goog.dom.TagName<!HTMLTableColElement>} */\ngoog.dom.TagName.COLGROUP = /** @type {?} */ ('COLGROUP');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.COMMAND = /** @type {?} */ ('COMMAND');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.DATA = /** @type {?} */ ('DATA');\n\n/** @const {!goog.dom.TagName<!HTMLDataListElement>} */\ngoog.dom.TagName.DATALIST = /** @type {?} */ ('DATALIST');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.DD = /** @type {?} */ ('DD');\n\n/** @const {!goog.dom.TagName<!HTMLModElement>} */\ngoog.dom.TagName.DEL = /** @type {?} */ ('DEL');\n\n/** @const {!goog.dom.TagName<!HTMLDetailsElement>} */\ngoog.dom.TagName.DETAILS = /** @type {?} */ ('DETAILS');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.DFN = /** @type {?} */ ('DFN');\n\n/** @const {!goog.dom.TagName<!HTMLDialogElement>} */\ngoog.dom.TagName.DIALOG = /** @type {?} */ ('DIALOG');\n\n/** @const {!goog.dom.TagName<!HTMLDirectoryElement>} */\ngoog.dom.TagName.DIR = /** @type {?} */ ('DIR');\n\n/** @const {!goog.dom.TagName<!HTMLDivElement>} */\ngoog.dom.TagName.DIV = /** @type {?} */ ('DIV');\n\n/** @const {!goog.dom.TagName<!HTMLDListElement>} */\ngoog.dom.TagName.DL = /** @type {?} */ ('DL');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.DT = /** @type {?} */ ('DT');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.EM = /** @type {?} */ ('EM');\n\n/** @const {!goog.dom.TagName<!HTMLEmbedElement>} */\ngoog.dom.TagName.EMBED = /** @type {?} */ ('EMBED');\n\n/** @const {!goog.dom.TagName<!HTMLFieldSetElement>} */\ngoog.dom.TagName.FIELDSET = /** @type {?} */ ('FIELDSET');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.FIGCAPTION = /** @type {?} */ ('FIGCAPTION');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.FIGURE = /** @type {?} */ ('FIGURE');\n\n/** @const {!goog.dom.TagName<!HTMLFontElement>} */\ngoog.dom.TagName.FONT = /** @type {?} */ ('FONT');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.FOOTER = /** @type {?} */ ('FOOTER');\n\n/** @const {!goog.dom.TagName<!HTMLFormElement>} */\ngoog.dom.TagName.FORM = /** @type {?} */ ('FORM');\n\n/** @const {!goog.dom.TagName<!HTMLFrameElement>} */\ngoog.dom.TagName.FRAME = /** @type {?} */ ('FRAME');\n\n/** @const {!goog.dom.TagName<!HTMLFrameSetElement>} */\ngoog.dom.TagName.FRAMESET = /** @type {?} */ ('FRAMESET');\n\n/** @const {!goog.dom.TagName<!HTMLHeadingElement>} */\ngoog.dom.TagName.H1 = /** @type {?} */ ('H1');\n\n/** @const {!goog.dom.TagName<!HTMLHeadingElement>} */\ngoog.dom.TagName.H2 = /** @type {?} */ ('H2');\n\n/** @const {!goog.dom.TagName<!HTMLHeadingElement>} */\ngoog.dom.TagName.H3 = /** @type {?} */ ('H3');\n\n/** @const {!goog.dom.TagName<!HTMLHeadingElement>} */\ngoog.dom.TagName.H4 = /** @type {?} */ ('H4');\n\n/** @const {!goog.dom.TagName<!HTMLHeadingElement>} */\ngoog.dom.TagName.H5 = /** @type {?} */ ('H5');\n\n/** @const {!goog.dom.TagName<!HTMLHeadingElement>} */\ngoog.dom.TagName.H6 = /** @type {?} */ ('H6');\n\n/** @const {!goog.dom.TagName<!HTMLHeadElement>} */\ngoog.dom.TagName.HEAD = /** @type {?} */ ('HEAD');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.HEADER = /** @type {?} */ ('HEADER');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.HGROUP = /** @type {?} */ ('HGROUP');\n\n/** @const {!goog.dom.TagName<!HTMLHRElement>} */\ngoog.dom.TagName.HR = /** @type {?} */ ('HR');\n\n/** @const {!goog.dom.TagName<!HTMLHtmlElement>} */\ngoog.dom.TagName.HTML = /** @type {?} */ ('HTML');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.I = /** @type {?} */ ('I');\n\n/** @const {!goog.dom.TagName<!HTMLIFrameElement>} */\ngoog.dom.TagName.IFRAME = /** @type {?} */ ('IFRAME');\n\n/** @const {!goog.dom.TagName<!HTMLImageElement>} */\ngoog.dom.TagName.IMG = /** @type {?} */ ('IMG');\n\n/** @const {!goog.dom.TagName<!HTMLInputElement>} */\ngoog.dom.TagName.INPUT = /** @type {?} */ ('INPUT');\n\n/** @const {!goog.dom.TagName<!HTMLModElement>} */\ngoog.dom.TagName.INS = /** @type {?} */ ('INS');\n\n/** @const {!goog.dom.TagName<!HTMLIsIndexElement>} */\ngoog.dom.TagName.ISINDEX = /** @type {?} */ ('ISINDEX');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.KBD = /** @type {?} */ ('KBD');\n\n// HTMLKeygenElement is deprecated.\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.KEYGEN = /** @type {?} */ ('KEYGEN');\n\n/** @const {!goog.dom.TagName<!HTMLLabelElement>} */\ngoog.dom.TagName.LABEL = /** @type {?} */ ('LABEL');\n\n/** @const {!goog.dom.TagName<!HTMLLegendElement>} */\ngoog.dom.TagName.LEGEND = /** @type {?} */ ('LEGEND');\n\n/** @const {!goog.dom.TagName<!HTMLLIElement>} */\ngoog.dom.TagName.LI = /** @type {?} */ ('LI');\n\n/** @const {!goog.dom.TagName<!HTMLLinkElement>} */\ngoog.dom.TagName.LINK = /** @type {?} */ ('LINK');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.MAIN = /** @type {?} */ ('MAIN');\n\n/** @const {!goog.dom.TagName<!HTMLMapElement>} */\ngoog.dom.TagName.MAP = /** @type {?} */ ('MAP');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.MARK = /** @type {?} */ ('MARK');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.MATH = /** @type {?} */ ('MATH');\n\n/** @const {!goog.dom.TagName<!HTMLMenuElement>} */\ngoog.dom.TagName.MENU = /** @type {?} */ ('MENU');\n\n/** @const {!goog.dom.TagName<!HTMLMenuItemElement>} */\ngoog.dom.TagName.MENUITEM = /** @type {?} */ ('MENUITEM');\n\n/** @const {!goog.dom.TagName<!HTMLMetaElement>} */\ngoog.dom.TagName.META = /** @type {?} */ ('META');\n\n/** @const {!goog.dom.TagName<!HTMLMeterElement>} */\ngoog.dom.TagName.METER = /** @type {?} */ ('METER');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.NAV = /** @type {?} */ ('NAV');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.NOFRAMES = /** @type {?} */ ('NOFRAMES');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.NOSCRIPT = /** @type {?} */ ('NOSCRIPT');\n\n/** @const {!goog.dom.TagName<!HTMLObjectElement>} */\ngoog.dom.TagName.OBJECT = /** @type {?} */ ('OBJECT');\n\n/** @const {!goog.dom.TagName<!HTMLOListElement>} */\ngoog.dom.TagName.OL = /** @type {?} */ ('OL');\n\n/** @const {!goog.dom.TagName<!HTMLOptGroupElement>} */\ngoog.dom.TagName.OPTGROUP = /** @type {?} */ ('OPTGROUP');\n\n/** @const {!goog.dom.TagName<!HTMLOptionElement>} */\ngoog.dom.TagName.OPTION = /** @type {?} */ ('OPTION');\n\n/** @const {!goog.dom.TagName<!HTMLOutputElement>} */\ngoog.dom.TagName.OUTPUT = /** @type {?} */ ('OUTPUT');\n\n/** @const {!goog.dom.TagName<!HTMLParagraphElement>} */\ngoog.dom.TagName.P = /** @type {?} */ ('P');\n\n/** @const {!goog.dom.TagName<!HTMLParamElement>} */\ngoog.dom.TagName.PARAM = /** @type {?} */ ('PARAM');\n\n/** @const {!goog.dom.TagName<!HTMLPictureElement>} */\ngoog.dom.TagName.PICTURE = /** @type {?} */ ('PICTURE');\n\n/** @const {!goog.dom.TagName<!HTMLPreElement>} */\ngoog.dom.TagName.PRE = /** @type {?} */ ('PRE');\n\n/** @const {!goog.dom.TagName<!HTMLProgressElement>} */\ngoog.dom.TagName.PROGRESS = /** @type {?} */ ('PROGRESS');\n\n/** @const {!goog.dom.TagName<!HTMLQuoteElement>} */\ngoog.dom.TagName.Q = /** @type {?} */ ('Q');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.RP = /** @type {?} */ ('RP');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.RT = /** @type {?} */ ('RT');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.RTC = /** @type {?} */ ('RTC');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.RUBY = /** @type {?} */ ('RUBY');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.S = /** @type {?} */ ('S');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.SAMP = /** @type {?} */ ('SAMP');\n\n/** @const {!goog.dom.TagName<!HTMLScriptElement>} */\ngoog.dom.TagName.SCRIPT = /** @type {?} */ ('SCRIPT');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.SECTION = /** @type {?} */ ('SECTION');\n\n/** @const {!goog.dom.TagName<!HTMLSelectElement>} */\ngoog.dom.TagName.SELECT = /** @type {?} */ ('SELECT');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.SMALL = /** @type {?} */ ('SMALL');\n\n/** @const {!goog.dom.TagName<!HTMLSourceElement>} */\ngoog.dom.TagName.SOURCE = /** @type {?} */ ('SOURCE');\n\n/** @const {!goog.dom.TagName<!HTMLSpanElement>} */\ngoog.dom.TagName.SPAN = /** @type {?} */ ('SPAN');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.STRIKE = /** @type {?} */ ('STRIKE');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.STRONG = /** @type {?} */ ('STRONG');\n\n/** @const {!goog.dom.TagName<!HTMLStyleElement>} */\ngoog.dom.TagName.STYLE = /** @type {?} */ ('STYLE');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.SUB = /** @type {?} */ ('SUB');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.SUMMARY = /** @type {?} */ ('SUMMARY');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.SUP = /** @type {?} */ ('SUP');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.SVG = /** @type {?} */ ('SVG');\n\n/** @const {!goog.dom.TagName<!HTMLTableElement>} */\ngoog.dom.TagName.TABLE = /** @type {?} */ ('TABLE');\n\n/** @const {!goog.dom.TagName<!HTMLTableSectionElement>} */\ngoog.dom.TagName.TBODY = /** @type {?} */ ('TBODY');\n\n/** @const {!goog.dom.TagName<!HTMLTableCellElement>} */\ngoog.dom.TagName.TD = /** @type {?} */ ('TD');\n\n/** @const {!goog.dom.TagName<!HTMLTemplateElement>} */\ngoog.dom.TagName.TEMPLATE = /** @type {?} */ ('TEMPLATE');\n\n/** @const {!goog.dom.TagName<!HTMLTextAreaElement>} */\ngoog.dom.TagName.TEXTAREA = /** @type {?} */ ('TEXTAREA');\n\n/** @const {!goog.dom.TagName<!HTMLTableSectionElement>} */\ngoog.dom.TagName.TFOOT = /** @type {?} */ ('TFOOT');\n\n/** @const {!goog.dom.TagName<!HTMLTableCellElement>} */\ngoog.dom.TagName.TH = /** @type {?} */ ('TH');\n\n/** @const {!goog.dom.TagName<!HTMLTableSectionElement>} */\ngoog.dom.TagName.THEAD = /** @type {?} */ ('THEAD');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.TIME = /** @type {?} */ ('TIME');\n\n/** @const {!goog.dom.TagName<!HTMLTitleElement>} */\ngoog.dom.TagName.TITLE = /** @type {?} */ ('TITLE');\n\n/** @const {!goog.dom.TagName<!HTMLTableRowElement>} */\ngoog.dom.TagName.TR = /** @type {?} */ ('TR');\n\n/** @const {!goog.dom.TagName<!HTMLTrackElement>} */\ngoog.dom.TagName.TRACK = /** @type {?} */ ('TRACK');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.TT = /** @type {?} */ ('TT');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.U = /** @type {?} */ ('U');\n\n/** @const {!goog.dom.TagName<!HTMLUListElement>} */\ngoog.dom.TagName.UL = /** @type {?} */ ('UL');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.VAR = /** @type {?} */ ('VAR');\n\n/** @const {!goog.dom.TagName<!HTMLVideoElement>} */\ngoog.dom.TagName.VIDEO = /** @type {?} */ ('VIDEO');\n\n/** @const {!goog.dom.TagName<!goog.dom.HtmlElement>} */\ngoog.dom.TagName.WBR = /** @type {?} */ ('WBR');\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\ngoog.provide('goog.Promise');\n\ngoog.require('goog.Thenable');\ngoog.require('goog.asserts');\ngoog.require('goog.async.FreeList');\ngoog.require('goog.async.run');\ngoog.require('goog.async.throwException');\ngoog.require('goog.debug.Error');\ngoog.require('goog.promise.Resolver');\n\n\n\n/**\n * NOTE: This class was created in anticipation of the built-in Promise type\n * being standardized and implemented across browsers. Now that Promise is\n * available in modern browsers, and is automatically polyfilled by the Closure\n * Compiler, by default, most new code should use native `Promise`\n * instead of `goog.Promise`. However, `goog.Promise` has the\n * concept of cancellation which native Promises do not yet have. So code\n * needing cancellation may still want to use `goog.Promise`.\n *\n * Promises provide a result that may be resolved asynchronously. A Promise may\n * be resolved by being fulfilled with a fulfillment value, rejected with a\n * rejection reason, or blocked by another Promise. A Promise is said to be\n * settled if it is either fulfilled or rejected. Once settled, the Promise\n * result is immutable.\n *\n * Promises may represent results of any type, including undefined. Rejection\n * reasons are typically Errors, but may also be of any type. Closure Promises\n * allow for optional type annotations that enforce that fulfillment values are\n * of the appropriate types at compile time.\n *\n * The result of a Promise is accessible by calling `then` and registering\n * `onFulfilled` and `onRejected` callbacks. Once the Promise\n * is settled, the relevant callbacks are invoked with the fulfillment value or\n * rejection reason as argument. Callbacks are always invoked in the order they\n * were registered, even when additional `then` calls are made from inside\n * another callback. A callback is always run asynchronously sometime after the\n * scope containing the registering `then` invocation has returned.\n *\n * If a Promise is resolved with another Promise, the first Promise will block\n * until the second is settled, and then assumes the same result as the second\n * Promise. This allows Promises to depend on the results of other Promises,\n * linking together multiple asynchronous operations.\n *\n * This implementation is compatible with the Promises/A+ specification and\n * passes that specification's conformance test suite. A Closure Promise may be\n * resolved with a Promise instance (or sufficiently compatible Promise-like\n * object) created by other Promise implementations. From the specification,\n * Promise-like objects are known as \"Thenables\".\n *\n * @see http://promisesaplus.com/\n *\n * @param {function(\n *             this:RESOLVER_CONTEXT,\n *             function((TYPE|IThenable<TYPE>|Thenable)=),\n *             function(*=)): void} resolver\n *     Initialization function that is invoked immediately with `resolve`\n *     and `reject` functions as arguments. The Promise is resolved or\n *     rejected with the first argument passed to either function.\n * @param {RESOLVER_CONTEXT=} opt_context An optional context for executing the\n *     resolver function. If unspecified, the resolver function will be executed\n *     in the default scope.\n * @constructor\n * @struct\n * @final\n * @implements {goog.Thenable<TYPE>}\n * @template TYPE,RESOLVER_CONTEXT\n */\ngoog.Promise = function(resolver, opt_context) {\n  /**\n   * The internal state of this Promise. Either PENDING, FULFILLED, REJECTED, or\n   * BLOCKED.\n   * @private {goog.Promise.State_}\n   */\n  this.state_ = goog.Promise.State_.PENDING;\n\n  /**\n   * The settled result of the Promise. Immutable once set with either a\n   * fulfillment value or rejection reason.\n   * @private {*}\n   */\n  this.result_ = undefined;\n\n  /**\n   * For Promises created by calling `then()`, the originating parent.\n   * @private {?goog.Promise}\n   */\n  this.parent_ = null;\n\n  /**\n   * The linked list of `onFulfilled` and `onRejected` callbacks\n   * added to this Promise by calls to `then()`.\n   * @private {?goog.Promise.CallbackEntry_}\n   */\n  this.callbackEntries_ = null;\n\n  /**\n   * The tail of the linked list of `onFulfilled` and `onRejected`\n   * callbacks added to this Promise by calls to `then()`.\n   * @private {?goog.Promise.CallbackEntry_}\n   */\n  this.callbackEntriesTail_ = null;\n\n  /**\n   * Whether the Promise is in the queue of Promises to execute.\n   * @private {boolean}\n   */\n  this.executing_ = false;\n\n  if (goog.Promise.UNHANDLED_REJECTION_DELAY > 0) {\n    /**\n     * A timeout ID used when the `UNHANDLED_REJECTION_DELAY` is greater\n     * than 0 milliseconds. The ID is set when the Promise is rejected, and\n     * cleared only if an `onRejected` callback is invoked for the\n     * Promise (or one of its descendants) before the delay is exceeded.\n     *\n     * If the rejection is not handled before the timeout completes, the\n     * rejection reason is passed to the unhandled rejection handler.\n     * @private {number}\n     */\n    this.unhandledRejectionId_ = 0;\n  } else if (goog.Promise.UNHANDLED_REJECTION_DELAY == 0) {\n    /**\n     * When the `UNHANDLED_REJECTION_DELAY` is set to 0 milliseconds, a\n     * boolean that is set if the Promise is rejected, and reset to false if an\n     * `onRejected` callback is invoked for the Promise (or one of its\n     * descendants). If the rejection is not handled before the next timestep,\n     * the rejection reason is passed to the unhandled rejection handler.\n     * @private {boolean}\n     */\n    this.hadUnhandledRejection_ = false;\n  }\n\n  if (goog.Promise.LONG_STACK_TRACES) {\n    /**\n     * A list of stack trace frames pointing to the locations where this Promise\n     * was created or had callbacks added to it. Saved to add additional context\n     * to stack traces when an exception is thrown.\n     * @private {!Array<string>}\n     */\n    this.stack_ = [];\n    this.addStackTrace_(new Error('created'));\n\n    /**\n     * Index of the most recently executed stack frame entry.\n     * @private {number}\n     */\n    this.currentStep_ = 0;\n  }\n\n  // As an optimization, we can skip this if resolver is goog.nullFunction.\n  // This value is passed internally when creating a promise which will be\n  // resolved through a more optimized path.\n  if (resolver != goog.nullFunction) {\n    try {\n      var self = this;\n      resolver.call(\n          opt_context,\n          function(value) {\n            self.resolve_(goog.Promise.State_.FULFILLED, value);\n          },\n          function(reason) {\n            if (goog.DEBUG &&\n                !(reason instanceof goog.Promise.CancellationError)) {\n              try {\n                // Promise was rejected. Step up one call frame to see why.\n                if (reason instanceof Error) {\n                  throw reason;\n                } else {\n                  throw new Error('Promise rejected.');\n                }\n              } catch (e) {\n                // Only thrown so browser dev tools can catch rejections of\n                // promises when the option to break on caught exceptions is\n                // activated.\n              }\n            }\n            self.resolve_(goog.Promise.State_.REJECTED, reason);\n          });\n    } catch (e) {\n      this.resolve_(goog.Promise.State_.REJECTED, e);\n    }\n  }\n};\n\n\n/**\n * @define {boolean} Whether traces of `then` calls should be included in\n * exceptions thrown\n */\ngoog.Promise.LONG_STACK_TRACES =\n    goog.define('goog.Promise.LONG_STACK_TRACES', false);\n\n\n/**\n * @define {number} The delay in milliseconds before a rejected Promise's reason\n * is passed to the rejection handler. By default, the rejection handler\n * rethrows the rejection reason so that it appears in the developer console or\n * `window.onerror` handler.\n *\n * Rejections are rethrown as quickly as possible by default. A negative value\n * disables rejection handling entirely.\n */\ngoog.Promise.UNHANDLED_REJECTION_DELAY =\n    goog.define('goog.Promise.UNHANDLED_REJECTION_DELAY', 0);\n\n\n/**\n * The possible internal states for a Promise. These states are not directly\n * observable to external callers.\n * @enum {number}\n * @private\n */\ngoog.Promise.State_ = {\n  /** The Promise is waiting for resolution. */\n  PENDING: 0,\n\n  /** The Promise is blocked waiting for the result of another Thenable. */\n  BLOCKED: 1,\n\n  /** The Promise has been resolved with a fulfillment value. */\n  FULFILLED: 2,\n\n  /** The Promise has been resolved with a rejection reason. */\n  REJECTED: 3\n};\n\n\n\n/**\n * Entries in the callback chain. Each call to `then`,\n * `thenCatch`, or `thenAlways` creates an entry containing the\n * functions that may be invoked once the Promise is settled.\n *\n * @private @final @struct @constructor\n */\ngoog.Promise.CallbackEntry_ = function() {\n  /** @type {?goog.Promise} */\n  this.child = null;\n  /** @type {?Function} */\n  this.onFulfilled = null;\n  /** @type {?Function} */\n  this.onRejected = null;\n  /** @type {?} */\n  this.context = null;\n  /** @type {?goog.Promise.CallbackEntry_} */\n  this.next = null;\n\n  /**\n   * A boolean value to indicate this is a \"thenAlways\" callback entry.\n   * Unlike a normal \"then/thenVoid\" a \"thenAlways doesn't participate\n   * in \"cancel\" considerations but is simply an observer and requires\n   * special handling.\n   * @type {boolean}\n   */\n  this.always = false;\n};\n\n\n/** clear the object prior to reuse */\ngoog.Promise.CallbackEntry_.prototype.reset = function() {\n  this.child = null;\n  this.onFulfilled = null;\n  this.onRejected = null;\n  this.context = null;\n  this.always = false;\n};\n\n\n/**\n * @define {number} The number of currently unused objects to keep around for\n *    reuse.\n */\ngoog.Promise.DEFAULT_MAX_UNUSED =\n    goog.define('goog.Promise.DEFAULT_MAX_UNUSED', 100);\n\n\n/** @const @private {goog.async.FreeList<!goog.Promise.CallbackEntry_>} */\ngoog.Promise.freelist_ = new goog.async.FreeList(\n    function() { return new goog.Promise.CallbackEntry_(); },\n    function(item) { item.reset(); }, goog.Promise.DEFAULT_MAX_UNUSED);\n\n\n/**\n * @param {Function} onFulfilled\n * @param {Function} onRejected\n * @param {?} context\n * @return {!goog.Promise.CallbackEntry_}\n * @private\n */\ngoog.Promise.getCallbackEntry_ = function(onFulfilled, onRejected, context) {\n  var entry = goog.Promise.freelist_.get();\n  entry.onFulfilled = onFulfilled;\n  entry.onRejected = onRejected;\n  entry.context = context;\n  return entry;\n};\n\n\n/**\n * @param {!goog.Promise.CallbackEntry_} entry\n * @private\n */\ngoog.Promise.returnEntry_ = function(entry) {\n  goog.Promise.freelist_.put(entry);\n};\n\n\n// NOTE: this is the same template expression as is used for\n// goog.IThenable.prototype.then\n\n\n/**\n * @param {VALUE=} opt_value\n * @return {RESULT} A new Promise that is immediately resolved\n *     with the given value. If the input value is already a goog.Promise, it\n *     will be returned immediately without creating a new instance.\n * @template VALUE\n * @template RESULT := type('goog.Promise',\n *     cond(isUnknown(VALUE), unknown(),\n *       mapunion(VALUE, (V) =>\n *         cond(isTemplatized(V) && sub(rawTypeOf(V), 'IThenable'),\n *           templateTypeOf(V, 0),\n *           cond(sub(V, 'Thenable'),\n *              unknown(),\n *              V)))))\n * =:\n */\ngoog.Promise.resolve = function(opt_value) {\n  if (opt_value instanceof goog.Promise) {\n    // Avoid creating a new object if we already have a promise object\n    // of the correct type.\n    return opt_value;\n  }\n\n  // Passing goog.nullFunction will cause the constructor to take an optimized\n  // path that skips calling the resolver function.\n  var promise = new goog.Promise(goog.nullFunction);\n  promise.resolve_(goog.Promise.State_.FULFILLED, opt_value);\n  return promise;\n};\n\n\n/**\n * @param {*=} opt_reason\n * @return {!goog.Promise} A new Promise that is immediately rejected with the\n *     given reason.\n */\ngoog.Promise.reject = function(opt_reason) {\n  return new goog.Promise(function(resolve, reject) { reject(opt_reason); });\n};\n\n\n/**\n * This is identical to\n * {@code goog.Promise.resolve(value).then(onFulfilled, onRejected)}, but it\n * avoids creating an unnecessary wrapper Promise when `value` is already\n * thenable.\n *\n * @param {?(goog.Thenable<TYPE>|Thenable|TYPE)} value\n * @param {function(TYPE): ?} onFulfilled\n * @param {function(*): *} onRejected\n * @template TYPE\n * @private\n */\ngoog.Promise.resolveThen_ = function(value, onFulfilled, onRejected) {\n  var isThenable =\n      goog.Promise.maybeThen_(value, onFulfilled, onRejected, null);\n  if (!isThenable) {\n    goog.async.run(goog.partial(onFulfilled, value));\n  }\n};\n\n\n/**\n * @param {!Array<?(goog.Promise<TYPE>|goog.Thenable<TYPE>|Thenable|*)>}\n *     promises\n * @return {!goog.Promise<TYPE>} A Promise that receives the result of the\n *     first Promise (or Promise-like) input to settle immediately after it\n *     settles.\n * @template TYPE\n */\ngoog.Promise.race = function(promises) {\n  return new goog.Promise(function(resolve, reject) {\n    if (!promises.length) {\n      resolve(undefined);\n    }\n    for (var i = 0, promise; i < promises.length; i++) {\n      promise = promises[i];\n      goog.Promise.resolveThen_(promise, resolve, reject);\n    }\n  });\n};\n\n\n/**\n * @param {!Array<?(goog.Promise<TYPE>|goog.Thenable<TYPE>|Thenable|*)>}\n *     promises\n * @return {!goog.Promise<!Array<TYPE>>} A Promise that receives a list of\n *     every fulfilled value once every input Promise (or Promise-like) is\n *     successfully fulfilled, or is rejected with the first rejection reason\n *     immediately after it is rejected.\n * @template TYPE\n */\ngoog.Promise.all = function(promises) {\n  return new goog.Promise(function(resolve, reject) {\n    var toFulfill = promises.length;\n    var values = [];\n\n    if (!toFulfill) {\n      resolve(values);\n      return;\n    }\n\n    var onFulfill = function(index, value) {\n      toFulfill--;\n      values[index] = value;\n      if (toFulfill == 0) {\n        resolve(values);\n      }\n    };\n\n    var onReject = function(reason) { reject(reason); };\n\n    for (var i = 0, promise; i < promises.length; i++) {\n      promise = promises[i];\n      goog.Promise.resolveThen_(promise, goog.partial(onFulfill, i), onReject);\n    }\n  });\n};\n\n\n/**\n * @param {!Array<?(goog.Promise<TYPE>|goog.Thenable<TYPE>|Thenable|*)>}\n *     promises\n * @return {!goog.Promise<!Array<{\n *     fulfilled: boolean,\n *     value: (TYPE|undefined),\n *     reason: (*|undefined)}>>} A Promise that resolves with a list of\n *         result objects once all input Promises (or Promise-like) have\n *         settled. Each result object contains a 'fulfilled' boolean indicating\n *         whether an input Promise was fulfilled or rejected. For fulfilled\n *         Promises, the resulting value is stored in the 'value' field. For\n *         rejected Promises, the rejection reason is stored in the 'reason'\n *         field.\n * @template TYPE\n */\ngoog.Promise.allSettled = function(promises) {\n  return new goog.Promise(function(resolve, reject) {\n    var toSettle = promises.length;\n    var results = [];\n\n    if (!toSettle) {\n      resolve(results);\n      return;\n    }\n\n    var onSettled = function(index, fulfilled, result) {\n      toSettle--;\n      results[index] = fulfilled ? {fulfilled: true, value: result} :\n                                   {fulfilled: false, reason: result};\n      if (toSettle == 0) {\n        resolve(results);\n      }\n    };\n\n    for (var i = 0, promise; i < promises.length; i++) {\n      promise = promises[i];\n      goog.Promise.resolveThen_(\n          promise, goog.partial(onSettled, i, true /* fulfilled */),\n          goog.partial(onSettled, i, false /* fulfilled */));\n    }\n  });\n};\n\n\n/**\n * @param {!Array<?(goog.Promise<TYPE>|goog.Thenable<TYPE>|Thenable|*)>}\n *     promises\n * @return {!goog.Promise<TYPE>} A Promise that receives the value of the first\n *     input to be fulfilled, or is rejected with a list of every rejection\n *     reason if all inputs are rejected.\n * @template TYPE\n */\ngoog.Promise.firstFulfilled = function(promises) {\n  return new goog.Promise(function(resolve, reject) {\n    var toReject = promises.length;\n    var reasons = [];\n\n    if (!toReject) {\n      resolve(undefined);\n      return;\n    }\n\n    var onFulfill = function(value) { resolve(value); };\n\n    var onReject = function(index, reason) {\n      toReject--;\n      reasons[index] = reason;\n      if (toReject == 0) {\n        reject(reasons);\n      }\n    };\n\n    for (var i = 0, promise; i < promises.length; i++) {\n      promise = promises[i];\n      goog.Promise.resolveThen_(promise, onFulfill, goog.partial(onReject, i));\n    }\n  });\n};\n\n\n/**\n * @return {!goog.promise.Resolver<TYPE>} Resolver wrapping the promise and its\n *     resolve / reject functions. Resolving or rejecting the resolver\n *     resolves or rejects the promise.\n * @template TYPE\n */\ngoog.Promise.withResolver = function() {\n  var resolve, reject;\n  var promise = new goog.Promise(function(rs, rj) {\n    resolve = rs;\n    reject = rj;\n  });\n  return new goog.Promise.Resolver_(promise, resolve, reject);\n};\n\n\n/**\n * Adds callbacks that will operate on the result of the Promise, returning a\n * new child Promise.\n *\n * If the Promise is fulfilled, the `onFulfilled` callback will be invoked\n * with the fulfillment value as argument, and the child Promise will be\n * fulfilled with the return value of the callback. If the callback throws an\n * exception, the child Promise will be rejected with the thrown value instead.\n *\n * If the Promise is rejected, the `onRejected` callback will be invoked\n * with the rejection reason as argument, and the child Promise will be resolved\n * with the return value or rejected with the thrown value of the callback.\n *\n * @override\n */\ngoog.Promise.prototype.then = function(\n    opt_onFulfilled, opt_onRejected, opt_context) {\n\n  if (opt_onFulfilled != null) {\n    goog.asserts.assertFunction(\n        opt_onFulfilled, 'opt_onFulfilled should be a function.');\n  }\n  if (opt_onRejected != null) {\n    goog.asserts.assertFunction(\n        opt_onRejected,\n        'opt_onRejected should be a function. Did you pass opt_context ' +\n            'as the second argument instead of the third?');\n  }\n\n  if (goog.Promise.LONG_STACK_TRACES) {\n    this.addStackTrace_(new Error('then'));\n  }\n\n  return this.addChildPromise_(\n      goog.isFunction(opt_onFulfilled) ? opt_onFulfilled : null,\n      goog.isFunction(opt_onRejected) ? opt_onRejected : null, opt_context);\n};\ngoog.Thenable.addImplementation(goog.Promise);\n\n\n/**\n * Adds callbacks that will operate on the result of the Promise without\n * returning a child Promise (unlike \"then\").\n *\n * If the Promise is fulfilled, the `onFulfilled` callback will be invoked\n * with the fulfillment value as argument.\n *\n * If the Promise is rejected, the `onRejected` callback will be invoked\n * with the rejection reason as argument.\n *\n * @param {?(function(this:THIS, TYPE):?)=} opt_onFulfilled A\n *     function that will be invoked with the fulfillment value if the Promise\n *     is fulfilled.\n * @param {?(function(this:THIS, *): *)=} opt_onRejected A function that will\n *     be invoked with the rejection reason if the Promise is rejected.\n * @param {THIS=} opt_context An optional context object that will be the\n *     execution context for the callbacks. By default, functions are executed\n *     with the default this.\n * @package\n * @template THIS\n */\ngoog.Promise.prototype.thenVoid = function(\n    opt_onFulfilled, opt_onRejected, opt_context) {\n\n  if (opt_onFulfilled != null) {\n    goog.asserts.assertFunction(\n        opt_onFulfilled, 'opt_onFulfilled should be a function.');\n  }\n  if (opt_onRejected != null) {\n    goog.asserts.assertFunction(\n        opt_onRejected,\n        'opt_onRejected should be a function. Did you pass opt_context ' +\n            'as the second argument instead of the third?');\n  }\n\n  if (goog.Promise.LONG_STACK_TRACES) {\n    this.addStackTrace_(new Error('then'));\n  }\n\n  // Note: no default rejection handler is provided here as we need to\n  // distinguish unhandled rejections.\n  this.addCallbackEntry_(\n      goog.Promise.getCallbackEntry_(\n          opt_onFulfilled || goog.nullFunction, opt_onRejected || null,\n          opt_context));\n};\n\n\n/**\n * Adds a callback that will be invoked when the Promise is settled (fulfilled\n * or rejected). The callback receives no argument, and no new child Promise is\n * created. This is useful for ensuring that cleanup takes place after certain\n * asynchronous operations. Callbacks added with `thenAlways` will be\n * executed in the same order with other calls to `then`,\n * `thenAlways`, or `thenCatch`.\n *\n * Since it does not produce a new child Promise, cancellation propagation is\n * not prevented by adding callbacks with `thenAlways`. A Promise that has\n * a cleanup handler added with `thenAlways` will be canceled if all of\n * its children created by `then` (or `thenCatch`) are canceled.\n * Additionally, since any rejections are not passed to the callback, it does\n * not stop the unhandled rejection handler from running.\n *\n * @param {function(this:THIS): void} onSettled A function that will be invoked\n *     when the Promise is settled (fulfilled or rejected).\n * @param {THIS=} opt_context An optional context object that will be the\n *     execution context for the callbacks. By default, functions are executed\n *     in the global scope.\n * @return {!goog.Promise<TYPE>} This Promise, for chaining additional calls.\n * @template THIS\n */\ngoog.Promise.prototype.thenAlways = function(onSettled, opt_context) {\n  if (goog.Promise.LONG_STACK_TRACES) {\n    this.addStackTrace_(new Error('thenAlways'));\n  }\n\n  var entry = goog.Promise.getCallbackEntry_(onSettled, onSettled, opt_context);\n  entry.always = true;\n  this.addCallbackEntry_(entry);\n  return this;\n};\n\n\n/**\n * Adds a callback that will be invoked only if the Promise is rejected. This\n * is equivalent to `then(null, onRejected)`.\n *\n * @param {function(this:THIS, *): *} onRejected A function that will be\n *     invoked with the rejection reason if this Promise is rejected.\n * @param {THIS=} opt_context An optional context object that will be the\n *     execution context for the callbacks. By default, functions are executed\n *     in the global scope.\n * @return {!goog.Promise} A new Promise that will resolve either to the\n *     value of this promise, or if this promise is rejected, the result of\n *     `onRejected`. The returned Promise will reject if `onRejected` throws.\n * @template THIS\n */\ngoog.Promise.prototype.thenCatch = function(onRejected, opt_context) {\n  if (goog.Promise.LONG_STACK_TRACES) {\n    this.addStackTrace_(new Error('thenCatch'));\n  }\n  return this.addChildPromise_(null, onRejected, opt_context);\n};\n\n\n/**\n * Cancels the Promise if it is still pending by rejecting it with a cancel\n * Error. No action is performed if the Promise is already resolved.\n *\n * All child Promises of the canceled Promise will be rejected with the same\n * cancel error, as with normal Promise rejection. If the Promise to be canceled\n * is the only child of a pending Promise, the parent Promise will also be\n * canceled. Cancellation may propagate upward through multiple generations.\n *\n * @param {string=} opt_message An optional debugging message for describing the\n *     cancellation reason.\n */\ngoog.Promise.prototype.cancel = function(opt_message) {\n  if (this.state_ == goog.Promise.State_.PENDING) {\n    // Instantiate Error object synchronously. This ensures Error::stack points\n    // to the cancel() callsite.\n    var err = new goog.Promise.CancellationError(opt_message);\n    goog.async.run(function() {\n      this.cancelInternal_(err);\n    }, this);\n  }\n};\n\n\n/**\n * Cancels this Promise with the given error.\n *\n * @param {!Error} err The cancellation error.\n * @private\n */\ngoog.Promise.prototype.cancelInternal_ = function(err) {\n  if (this.state_ == goog.Promise.State_.PENDING) {\n    if (this.parent_) {\n      // Cancel the Promise and remove it from the parent's child list.\n      this.parent_.cancelChild_(this, err);\n      this.parent_ = null;\n    } else {\n      this.resolve_(goog.Promise.State_.REJECTED, err);\n    }\n  }\n};\n\n\n/**\n * Cancels a child Promise from the list of callback entries. If the Promise has\n * not already been resolved, reject it with a cancel error. If there are no\n * other children in the list of callback entries, propagate the cancellation\n * by canceling this Promise as well.\n *\n * @param {!goog.Promise} childPromise The Promise to cancel.\n * @param {!Error} err The cancel error to use for rejecting the Promise.\n * @private\n */\ngoog.Promise.prototype.cancelChild_ = function(childPromise, err) {\n  if (!this.callbackEntries_) {\n    return;\n  }\n  var childCount = 0;\n  var childEntry = null;\n  var beforeChildEntry = null;\n\n  // Find the callback entry for the childPromise, and count whether there are\n  // additional child Promises.\n  for (var entry = this.callbackEntries_; entry; entry = entry.next) {\n    if (!entry.always) {\n      childCount++;\n      if (entry.child == childPromise) {\n        childEntry = entry;\n      }\n      if (childEntry && childCount > 1) {\n        break;\n      }\n    }\n    if (!childEntry) {\n      beforeChildEntry = entry;\n    }\n  }\n\n  // Can a child entry be missing?\n\n  // If the child Promise was the only child, cancel this Promise as well.\n  // Otherwise, reject only the child Promise with the cancel error.\n  if (childEntry) {\n    if (this.state_ == goog.Promise.State_.PENDING && childCount == 1) {\n      this.cancelInternal_(err);\n    } else {\n      if (beforeChildEntry) {\n        this.removeEntryAfter_(beforeChildEntry);\n      } else {\n        this.popEntry_();\n      }\n\n      this.executeCallback_(childEntry, goog.Promise.State_.REJECTED, err);\n    }\n  }\n};\n\n\n/**\n * Adds a callback entry to the current Promise, and schedules callback\n * execution if the Promise has already been settled.\n *\n * @param {goog.Promise.CallbackEntry_} callbackEntry Record containing\n *     `onFulfilled` and `onRejected` callbacks to execute after\n *     the Promise is settled.\n * @private\n */\ngoog.Promise.prototype.addCallbackEntry_ = function(callbackEntry) {\n  if (!this.hasEntry_() && (this.state_ == goog.Promise.State_.FULFILLED ||\n                            this.state_ == goog.Promise.State_.REJECTED)) {\n    this.scheduleCallbacks_();\n  }\n  this.queueEntry_(callbackEntry);\n};\n\n\n/**\n * Creates a child Promise and adds it to the callback entry list. The result of\n * the child Promise is determined by the state of the parent Promise and the\n * result of the `onFulfilled` or `onRejected` callbacks as\n * specified in the Promise resolution procedure.\n *\n * @see http://promisesaplus.com/#the__method\n *\n * @param {?function(this:THIS, TYPE):\n *          (RESULT|goog.Promise<RESULT>|Thenable)} onFulfilled A callback that\n *     will be invoked if the Promise is fulfilled, or null.\n * @param {?function(this:THIS, *): *} onRejected A callback that will be\n *     invoked if the Promise is rejected, or null.\n * @param {THIS=} opt_context An optional execution context for the callbacks.\n *     in the default calling context.\n * @return {!goog.Promise} The child Promise.\n * @template RESULT,THIS\n * @private\n */\ngoog.Promise.prototype.addChildPromise_ = function(\n    onFulfilled, onRejected, opt_context) {\n\n  /** @type {goog.Promise.CallbackEntry_} */\n  var callbackEntry = goog.Promise.getCallbackEntry_(null, null, null);\n\n  callbackEntry.child = new goog.Promise(function(resolve, reject) {\n    // Invoke onFulfilled, or resolve with the parent's value if absent.\n    callbackEntry.onFulfilled = onFulfilled ? function(value) {\n      try {\n        var result = onFulfilled.call(opt_context, value);\n        resolve(result);\n      } catch (err) {\n        reject(err);\n      }\n    } : resolve;\n\n    // Invoke onRejected, or reject with the parent's reason if absent.\n    callbackEntry.onRejected = onRejected ? function(reason) {\n      try {\n        var result = onRejected.call(opt_context, reason);\n        if (result === undefined &&\n            reason instanceof goog.Promise.CancellationError) {\n          // Propagate cancellation to children if no other result is returned.\n          reject(reason);\n        } else {\n          resolve(result);\n        }\n      } catch (err) {\n        reject(err);\n      }\n    } : reject;\n  });\n\n  callbackEntry.child.parent_ = this;\n  this.addCallbackEntry_(callbackEntry);\n  return callbackEntry.child;\n};\n\n\n/**\n * Unblocks the Promise and fulfills it with the given value.\n *\n * @param {TYPE} value\n * @private\n */\ngoog.Promise.prototype.unblockAndFulfill_ = function(value) {\n  goog.asserts.assert(this.state_ == goog.Promise.State_.BLOCKED);\n  this.state_ = goog.Promise.State_.PENDING;\n  this.resolve_(goog.Promise.State_.FULFILLED, value);\n};\n\n\n/**\n * Unblocks the Promise and rejects it with the given rejection reason.\n *\n * @param {*} reason\n * @private\n */\ngoog.Promise.prototype.unblockAndReject_ = function(reason) {\n  goog.asserts.assert(this.state_ == goog.Promise.State_.BLOCKED);\n  this.state_ = goog.Promise.State_.PENDING;\n  this.resolve_(goog.Promise.State_.REJECTED, reason);\n};\n\n\n/**\n * Attempts to resolve a Promise with a given resolution state and value. This\n * is a no-op if the given Promise has already been resolved.\n *\n * If the given result is a Thenable (such as another Promise), the Promise will\n * be settled with the same state and result as the Thenable once it is itself\n * settled.\n *\n * If the given result is not a Thenable, the Promise will be settled (fulfilled\n * or rejected) with that result based on the given state.\n *\n * @see http://promisesaplus.com/#the_promise_resolution_procedure\n *\n * @param {goog.Promise.State_} state\n * @param {*} x The result to apply to the Promise.\n * @private\n */\ngoog.Promise.prototype.resolve_ = function(state, x) {\n  if (this.state_ != goog.Promise.State_.PENDING) {\n    return;\n  }\n\n  if (this === x) {\n    state = goog.Promise.State_.REJECTED;\n    x = new TypeError('Promise cannot resolve to itself');\n  }\n\n  this.state_ = goog.Promise.State_.BLOCKED;\n  var isThenable = goog.Promise.maybeThen_(\n      x, this.unblockAndFulfill_, this.unblockAndReject_, this);\n  if (isThenable) {\n    return;\n  }\n\n  this.result_ = x;\n  this.state_ = state;\n  // Since we can no longer be canceled, remove link to parent, so that the\n  // child promise does not keep the parent promise alive.\n  this.parent_ = null;\n  this.scheduleCallbacks_();\n\n  if (state == goog.Promise.State_.REJECTED &&\n      !(x instanceof goog.Promise.CancellationError)) {\n    goog.Promise.addUnhandledRejection_(this, x);\n  }\n};\n\n\n/**\n * Invokes the \"then\" method of an input value if that value is a Thenable. This\n * is a no-op if the value is not thenable.\n *\n * @param {?} value A potentially thenable value.\n * @param {!Function} onFulfilled\n * @param {!Function} onRejected\n * @param {?} context\n * @return {boolean} Whether the input value was thenable.\n * @private\n */\ngoog.Promise.maybeThen_ = function(value, onFulfilled, onRejected, context) {\n  if (value instanceof goog.Promise) {\n    value.thenVoid(onFulfilled, onRejected, context);\n    return true;\n  } else if (goog.Thenable.isImplementedBy(value)) {\n    value = /** @type {!goog.Thenable} */ (value);\n    value.then(onFulfilled, onRejected, context);\n    return true;\n  } else if (goog.isObject(value)) {\n    const thenable = /** @type {!Thenable} */ (value);\n    try {\n      var then = thenable.then;\n      if (goog.isFunction(then)) {\n        goog.Promise.tryThen_(thenable, then, onFulfilled, onRejected, context);\n        return true;\n      }\n    } catch (e) {\n      onRejected.call(context, e);\n      return true;\n    }\n  }\n\n  return false;\n};\n\n\n/**\n * Attempts to call the `then` method on an object in the hopes that it is\n * a Promise-compatible instance. This allows interoperation between different\n * Promise implementations, however a non-compliant object may cause a Promise\n * to hang indefinitely. If the `then` method throws an exception, the\n * dependent Promise will be rejected with the thrown value.\n *\n * @see http://promisesaplus.com/#point-70\n *\n * @param {Thenable} thenable An object with a `then` method that may be\n *     compatible with the Promise/A+ specification.\n * @param {!Function} then The `then` method of the Thenable object.\n * @param {!Function} onFulfilled\n * @param {!Function} onRejected\n * @param {*} context\n * @private\n */\ngoog.Promise.tryThen_ = function(\n    thenable, then, onFulfilled, onRejected, context) {\n\n  var called = false;\n  var resolve = function(value) {\n    if (!called) {\n      called = true;\n      onFulfilled.call(context, value);\n    }\n  };\n\n  var reject = function(reason) {\n    if (!called) {\n      called = true;\n      onRejected.call(context, reason);\n    }\n  };\n\n  try {\n    then.call(thenable, resolve, reject);\n  } catch (e) {\n    reject(e);\n  }\n};\n\n\n/**\n * Executes the pending callbacks of a settled Promise after a timeout.\n *\n * Section 2.2.4 of the Promises/A+ specification requires that Promise\n * callbacks must only be invoked from a call stack that only contains Promise\n * implementation code, which we accomplish by invoking callback execution after\n * a timeout. If `startExecution_` is called multiple times for the same\n * Promise, the callback chain will be evaluated only once. Additional callbacks\n * may be added during the evaluation phase, and will be executed in the same\n * event loop.\n *\n * All Promises added to the waiting list during the same browser event loop\n * will be executed in one batch to avoid using a separate timeout per Promise.\n *\n * @private\n */\ngoog.Promise.prototype.scheduleCallbacks_ = function() {\n  if (!this.executing_) {\n    this.executing_ = true;\n    goog.async.run(this.executeCallbacks_, this);\n  }\n};\n\n\n/**\n * @return {boolean} Whether there are any pending callbacks queued.\n * @private\n */\ngoog.Promise.prototype.hasEntry_ = function() {\n  return !!this.callbackEntries_;\n};\n\n\n/**\n * @param {goog.Promise.CallbackEntry_} entry\n * @private\n */\ngoog.Promise.prototype.queueEntry_ = function(entry) {\n  goog.asserts.assert(entry.onFulfilled != null);\n\n  if (this.callbackEntriesTail_) {\n    this.callbackEntriesTail_.next = entry;\n    this.callbackEntriesTail_ = entry;\n  } else {\n    // It the work queue was empty set the head too.\n    this.callbackEntries_ = entry;\n    this.callbackEntriesTail_ = entry;\n  }\n};\n\n\n/**\n * @return {goog.Promise.CallbackEntry_} entry\n * @private\n */\ngoog.Promise.prototype.popEntry_ = function() {\n  var entry = null;\n  if (this.callbackEntries_) {\n    entry = this.callbackEntries_;\n    this.callbackEntries_ = entry.next;\n    entry.next = null;\n  }\n  // It the work queue is empty clear the tail too.\n  if (!this.callbackEntries_) {\n    this.callbackEntriesTail_ = null;\n  }\n\n  if (entry != null) {\n    goog.asserts.assert(entry.onFulfilled != null);\n  }\n  return entry;\n};\n\n\n/**\n * @param {goog.Promise.CallbackEntry_} previous\n * @private\n */\ngoog.Promise.prototype.removeEntryAfter_ = function(previous) {\n  goog.asserts.assert(this.callbackEntries_);\n  goog.asserts.assert(previous != null);\n  // If the last entry is being removed, update the tail\n  if (previous.next == this.callbackEntriesTail_) {\n    this.callbackEntriesTail_ = previous;\n  }\n\n  previous.next = previous.next.next;\n};\n\n\n/**\n * Executes all pending callbacks for this Promise.\n *\n * @private\n */\ngoog.Promise.prototype.executeCallbacks_ = function() {\n  var entry = null;\n  while (entry = this.popEntry_()) {\n    if (goog.Promise.LONG_STACK_TRACES) {\n      this.currentStep_++;\n    }\n    this.executeCallback_(entry, this.state_, this.result_);\n  }\n  this.executing_ = false;\n};\n\n\n/**\n * Executes a pending callback for this Promise. Invokes an `onFulfilled`\n * or `onRejected` callback based on the settled state of the Promise.\n *\n * @param {!goog.Promise.CallbackEntry_} callbackEntry An entry containing the\n *     onFulfilled and/or onRejected callbacks for this step.\n * @param {goog.Promise.State_} state The resolution status of the Promise,\n *     either FULFILLED or REJECTED.\n * @param {*} result The settled result of the Promise.\n * @private\n */\ngoog.Promise.prototype.executeCallback_ = function(\n    callbackEntry, state, result) {\n  // Cancel an unhandled rejection if the then/thenVoid call had an onRejected.\n  if (state == goog.Promise.State_.REJECTED && callbackEntry.onRejected &&\n      !callbackEntry.always) {\n    this.removeUnhandledRejection_();\n  }\n\n  if (callbackEntry.child) {\n    // When the parent is settled, the child no longer needs to hold on to it,\n    // as the parent can no longer be canceled.\n    callbackEntry.child.parent_ = null;\n    goog.Promise.invokeCallback_(callbackEntry, state, result);\n  } else {\n    // Callbacks created with thenAlways or thenVoid do not have the rejection\n    // handling code normally set up in the child Promise.\n    try {\n      callbackEntry.always ?\n          callbackEntry.onFulfilled.call(callbackEntry.context) :\n          goog.Promise.invokeCallback_(callbackEntry, state, result);\n    } catch (err) {\n      goog.Promise.handleRejection_.call(null, err);\n    }\n  }\n  goog.Promise.returnEntry_(callbackEntry);\n};\n\n\n/**\n * Executes the onFulfilled or onRejected callback for a callbackEntry.\n *\n * @param {!goog.Promise.CallbackEntry_} callbackEntry\n * @param {goog.Promise.State_} state\n * @param {*} result\n * @private\n */\ngoog.Promise.invokeCallback_ = function(callbackEntry, state, result) {\n  if (state == goog.Promise.State_.FULFILLED) {\n    callbackEntry.onFulfilled.call(callbackEntry.context, result);\n  } else if (callbackEntry.onRejected) {\n    callbackEntry.onRejected.call(callbackEntry.context, result);\n  }\n};\n\n\n/**\n * Records a stack trace entry for functions that call `then` or the\n * Promise constructor. May be disabled by unsetting `LONG_STACK_TRACES`.\n *\n * @param {!Error} err An Error object created by the calling function for\n *     providing a stack trace.\n * @private\n */\ngoog.Promise.prototype.addStackTrace_ = function(err) {\n  if (goog.Promise.LONG_STACK_TRACES && typeof err.stack === 'string') {\n    // Extract the third line of the stack trace, which is the entry for the\n    // user function that called into Promise code.\n    var trace = err.stack.split('\\n', 4)[3];\n    var message = err.message;\n\n    // Pad the message to align the traces.\n    message += Array(11 - message.length).join(' ');\n    this.stack_.push(message + trace);\n  }\n};\n\n\n/**\n * Adds extra stack trace information to an exception for the list of\n * asynchronous `then` calls that have been run for this Promise. Stack\n * trace information is recorded in {@see #addStackTrace_}, and appended to\n * rethrown errors when `LONG_STACK_TRACES` is enabled.\n *\n * @param {?} err An unhandled exception captured during callback execution.\n * @private\n */\ngoog.Promise.prototype.appendLongStack_ = function(err) {\n  if (goog.Promise.LONG_STACK_TRACES && err && typeof err.stack === 'string' &&\n      this.stack_.length) {\n    var longTrace = ['Promise trace:'];\n\n    for (var promise = this; promise; promise = promise.parent_) {\n      for (var i = this.currentStep_; i >= 0; i--) {\n        longTrace.push(promise.stack_[i]);\n      }\n      longTrace.push(\n          'Value: ' +\n          '[' + (promise.state_ == goog.Promise.State_.REJECTED ? 'REJECTED' :\n                                                                  'FULFILLED') +\n          '] ' +\n          '<' + String(promise.result_) + '>');\n    }\n    err.stack += '\\n\\n' + longTrace.join('\\n');\n  }\n};\n\n\n/**\n * Marks this rejected Promise as having being handled. Also marks any parent\n * Promises in the rejected state as handled. The rejection handler will no\n * longer be invoked for this Promise (if it has not been called already).\n *\n * @private\n */\ngoog.Promise.prototype.removeUnhandledRejection_ = function() {\n  if (goog.Promise.UNHANDLED_REJECTION_DELAY > 0) {\n    for (var p = this; p && p.unhandledRejectionId_; p = p.parent_) {\n      goog.global.clearTimeout(p.unhandledRejectionId_);\n      p.unhandledRejectionId_ = 0;\n    }\n  } else if (goog.Promise.UNHANDLED_REJECTION_DELAY == 0) {\n    for (var p = this; p && p.hadUnhandledRejection_; p = p.parent_) {\n      p.hadUnhandledRejection_ = false;\n    }\n  }\n};\n\n\n/**\n * Marks this rejected Promise as unhandled. If no `onRejected` callback\n * is called for this Promise before the `UNHANDLED_REJECTION_DELAY`\n * expires, the reason will be passed to the unhandled rejection handler. The\n * handler typically rethrows the rejection reason so that it becomes visible in\n * the developer console.\n *\n * @param {!goog.Promise} promise The rejected Promise.\n * @param {*} reason The Promise rejection reason.\n * @private\n */\ngoog.Promise.addUnhandledRejection_ = function(promise, reason) {\n  if (goog.Promise.UNHANDLED_REJECTION_DELAY > 0) {\n    promise.unhandledRejectionId_ = goog.global.setTimeout(function() {\n      promise.appendLongStack_(reason);\n      goog.Promise.handleRejection_.call(null, reason);\n    }, goog.Promise.UNHANDLED_REJECTION_DELAY);\n\n  } else if (goog.Promise.UNHANDLED_REJECTION_DELAY == 0) {\n    promise.hadUnhandledRejection_ = true;\n    goog.async.run(function() {\n      if (promise.hadUnhandledRejection_) {\n        promise.appendLongStack_(reason);\n        goog.Promise.handleRejection_.call(null, reason);\n      }\n    });\n  }\n};\n\n\n/**\n * A method that is invoked with the rejection reasons for Promises that are\n * rejected but have no `onRejected` callbacks registered yet.\n * @type {function(*)}\n * @private\n */\ngoog.Promise.handleRejection_ = goog.async.throwException;\n\n\n/**\n * Sets a handler that will be called with reasons from unhandled rejected\n * Promises. If the rejected Promise (or one of its descendants) has an\n * `onRejected` callback registered, the rejection will be considered\n * handled, and the rejection handler will not be called.\n *\n * By default, unhandled rejections are rethrown so that the error may be\n * captured by the developer console or a `window.onerror` handler.\n *\n * @param {function(*)} handler A function that will be called with reasons from\n *     rejected Promises. Defaults to `goog.async.throwException`.\n */\ngoog.Promise.setUnhandledRejectionHandler = function(handler) {\n  goog.Promise.handleRejection_ = handler;\n};\n\n\n\n/**\n * Error used as a rejection reason for canceled Promises.\n *\n * @param {string=} opt_message\n * @constructor\n * @extends {goog.debug.Error}\n * @final\n */\ngoog.Promise.CancellationError = function(opt_message) {\n  goog.Promise.CancellationError.base(this, 'constructor', opt_message);\n};\ngoog.inherits(goog.Promise.CancellationError, goog.debug.Error);\n\n\n/** @override */\ngoog.Promise.CancellationError.prototype.name = 'cancel';\n\n\n\n/**\n * Internal implementation of the resolver interface.\n *\n * @param {!goog.Promise<TYPE>} promise\n * @param {function((TYPE|goog.Promise<TYPE>|Thenable)=)} resolve\n * @param {function(*=): void} reject\n * @implements {goog.promise.Resolver<TYPE>}\n * @final @struct\n * @constructor\n * @private\n * @template TYPE\n */\ngoog.Promise.Resolver_ = function(promise, resolve, reject) {\n  /** @const */\n  this.promise = promise;\n\n  /** @const */\n  this.resolve = resolve;\n\n  /** @const */\n  this.reject = reject;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Implements the disposable interface. The dispose method is used\n * to clean up references and resources.\n */\n\n\ngoog.provide('goog.Disposable');\ngoog.provide('goog.dispose');\ngoog.provide('goog.disposeAll');\n\ngoog.require('goog.disposable.IDisposable');\n\n\n\n/**\n * Class that provides the basic implementation for disposable objects. If your\n * class holds references or resources that can't be collected by standard GC,\n * it should extend this class or implement the disposable interface (defined\n * in goog.disposable.IDisposable). See description of\n * goog.disposable.IDisposable for examples of cleanup.\n * @constructor\n * @implements {goog.disposable.IDisposable}\n */\ngoog.Disposable = function() {\n  /**\n   * If monitoring the goog.Disposable instances is enabled, stores the creation\n   * stack trace of the Disposable instance.\n   * @type {string|undefined}\n   */\n  this.creationStack;\n\n  if (goog.Disposable.MONITORING_MODE != goog.Disposable.MonitoringMode.OFF) {\n    if (goog.Disposable.INCLUDE_STACK_ON_CREATION) {\n      this.creationStack = new Error().stack;\n    }\n    goog.Disposable.instances_[goog.getUid(this)] = this;\n  }\n  // Support sealing\n  this.disposed_ = this.disposed_;\n  this.onDisposeCallbacks_ = this.onDisposeCallbacks_;\n};\n\n\n/**\n * @enum {number} Different monitoring modes for Disposable.\n */\ngoog.Disposable.MonitoringMode = {\n  /**\n   * No monitoring.\n   */\n  OFF: 0,\n  /**\n   * Creating and disposing the goog.Disposable instances is monitored. All\n   * disposable objects need to call the `goog.Disposable` base\n   * constructor. The PERMANENT mode must be switched on before creating any\n   * goog.Disposable instances.\n   */\n  PERMANENT: 1,\n  /**\n   * INTERACTIVE mode can be switched on and off on the fly without producing\n   * errors. It also doesn't warn if the disposable objects don't call the\n   * `goog.Disposable` base constructor.\n   */\n  INTERACTIVE: 2\n};\n\n\n/**\n * @define {number} The monitoring mode of the goog.Disposable\n *     instances. Default is OFF. Switching on the monitoring is only\n *     recommended for debugging because it has a significant impact on\n *     performance and memory usage. If switched off, the monitoring code\n *     compiles down to 0 bytes.\n */\ngoog.Disposable.MONITORING_MODE =\n    goog.define('goog.Disposable.MONITORING_MODE', 0);\n\n\n/**\n * @define {boolean} Whether to attach creation stack to each created disposable\n *     instance; This is only relevant for when MonitoringMode != OFF.\n */\ngoog.Disposable.INCLUDE_STACK_ON_CREATION =\n    goog.define('goog.Disposable.INCLUDE_STACK_ON_CREATION', true);\n\n\n/**\n * Maps the unique ID of every undisposed `goog.Disposable` object to\n * the object itself.\n * @type {!Object<number, !goog.Disposable>}\n * @private\n */\ngoog.Disposable.instances_ = {};\n\n\n/**\n * @return {!Array<!goog.Disposable>} All `goog.Disposable` objects that\n *     haven't been disposed of.\n */\ngoog.Disposable.getUndisposedObjects = function() {\n  var ret = [];\n  for (var id in goog.Disposable.instances_) {\n    if (goog.Disposable.instances_.hasOwnProperty(id)) {\n      ret.push(goog.Disposable.instances_[Number(id)]);\n    }\n  }\n  return ret;\n};\n\n\n/**\n * Clears the registry of undisposed objects but doesn't dispose of them.\n */\ngoog.Disposable.clearUndisposedObjects = function() {\n  goog.Disposable.instances_ = {};\n};\n\n\n/**\n * Whether the object has been disposed of.\n * @type {boolean}\n * @private\n */\ngoog.Disposable.prototype.disposed_ = false;\n\n\n/**\n * Callbacks to invoke when this object is disposed.\n * @type {Array<!Function>}\n * @private\n */\ngoog.Disposable.prototype.onDisposeCallbacks_;\n\n\n/**\n * @return {boolean} Whether the object has been disposed of.\n * @override\n */\ngoog.Disposable.prototype.isDisposed = function() {\n  return this.disposed_;\n};\n\n\n/**\n * @return {boolean} Whether the object has been disposed of.\n * @deprecated Use {@link #isDisposed} instead.\n */\ngoog.Disposable.prototype.getDisposed = goog.Disposable.prototype.isDisposed;\n\n\n/**\n * Disposes of the object. If the object hasn't already been disposed of, calls\n * {@link #disposeInternal}. Classes that extend `goog.Disposable` should\n * override {@link #disposeInternal} in order to cleanup references, resources\n * and other disposable objects. Reentrant.\n *\n * @return {void} Nothing.\n * @override\n */\ngoog.Disposable.prototype.dispose = function() {\n  if (!this.disposed_) {\n    // Set disposed_ to true first, in case during the chain of disposal this\n    // gets disposed recursively.\n    this.disposed_ = true;\n    this.disposeInternal();\n    if (goog.Disposable.MONITORING_MODE != goog.Disposable.MonitoringMode.OFF) {\n      var uid = goog.getUid(this);\n      if (goog.Disposable.MONITORING_MODE ==\n              goog.Disposable.MonitoringMode.PERMANENT &&\n          !goog.Disposable.instances_.hasOwnProperty(uid)) {\n        throw new Error(\n            this + ' did not call the goog.Disposable base ' +\n            'constructor or was disposed of after a clearUndisposedObjects ' +\n            'call');\n      }\n      if (goog.Disposable.MONITORING_MODE !=\n              goog.Disposable.MonitoringMode.OFF &&\n          this.onDisposeCallbacks_ && this.onDisposeCallbacks_.length > 0) {\n        throw new Error(\n            this + ' did not empty its onDisposeCallbacks queue. This ' +\n            'probably means it overrode dispose() or disposeInternal() ' +\n            'without calling the superclass\\' method.');\n      }\n      delete goog.Disposable.instances_[uid];\n    }\n  }\n};\n\n\n/**\n * Associates a disposable object with this object so that they will be disposed\n * together.\n * @param {goog.disposable.IDisposable} disposable that will be disposed when\n *     this object is disposed.\n */\ngoog.Disposable.prototype.registerDisposable = function(disposable) {\n  this.addOnDisposeCallback(goog.partial(goog.dispose, disposable));\n};\n\n\n/**\n * Invokes a callback function when this object is disposed. Callbacks are\n * invoked in the order in which they were added. If a callback is added to\n * an already disposed Disposable, it will be called immediately.\n * @param {function(this:T):?} callback The callback function.\n * @param {T=} opt_scope An optional scope to call the callback in.\n * @template T\n */\ngoog.Disposable.prototype.addOnDisposeCallback = function(callback, opt_scope) {\n  if (this.disposed_) {\n    opt_scope !== undefined ? callback.call(opt_scope) : callback();\n    return;\n  }\n  if (!this.onDisposeCallbacks_) {\n    this.onDisposeCallbacks_ = [];\n  }\n\n  this.onDisposeCallbacks_.push(\n      opt_scope !== undefined ? goog.bind(callback, opt_scope) : callback);\n};\n\n\n/**\n * Performs appropriate cleanup. See description of goog.disposable.IDisposable\n * for examples. Classes that extend `goog.Disposable` should override this\n * method. Not reentrant. To avoid calling it twice, it must only be called from\n * the subclass' `disposeInternal` method. Everywhere else the public `dispose`\n * method must be used. For example:\n *\n * <pre>\n * mypackage.MyClass = function() {\n * mypackage.MyClass.base(this, 'constructor');\n *     // Constructor logic specific to MyClass.\n *     ...\n *   };\n *   goog.inherits(mypackage.MyClass, goog.Disposable);\n *\n *   mypackage.MyClass.prototype.disposeInternal = function() {\n *     // Dispose logic specific to MyClass.\n *     ...\n *     // Call superclass's disposeInternal at the end of the subclass's, like\n *     // in C++, to avoid hard-to-catch issues.\n *     mypackage.MyClass.base(this, 'disposeInternal');\n *   };\n * </pre>\n *\n * @protected\n */\ngoog.Disposable.prototype.disposeInternal = function() {\n  if (this.onDisposeCallbacks_) {\n    while (this.onDisposeCallbacks_.length) {\n      this.onDisposeCallbacks_.shift()();\n    }\n  }\n};\n\n\n/**\n * Returns True if we can verify the object is disposed.\n * Calls `isDisposed` on the argument if it supports it.  If obj\n * is not an object with an isDisposed() method, return false.\n * @param {*} obj The object to investigate.\n * @return {boolean} True if we can verify the object is disposed.\n */\ngoog.Disposable.isDisposed = function(obj) {\n  if (obj && typeof obj.isDisposed == 'function') {\n    return obj.isDisposed();\n  }\n  return false;\n};\n\n\n/**\n * Calls `dispose` on the argument if it supports it. If obj is not an\n *     object with a dispose() method, this is a no-op.\n * @param {*} obj The object to dispose of.\n */\ngoog.dispose = function(obj) {\n  if (obj && typeof obj.dispose == 'function') {\n    obj.dispose();\n  }\n};\n\n\n/**\n * Calls `dispose` on each member of the list that supports it. (If the\n * member is an ArrayLike, then `goog.disposeAll()` will be called\n * recursively on each of its members.) If the member is not an object with a\n * `dispose()` method, then it is ignored.\n * @param {...*} var_args The list.\n */\ngoog.disposeAll = function(var_args) {\n  for (var i = 0, len = arguments.length; i < len; ++i) {\n    var disposable = arguments[i];\n    if (goog.isArrayLike(disposable)) {\n      goog.disposeAll.apply(null, disposable);\n    } else {\n      goog.dispose(disposable);\n    }\n  }\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Logging and debugging utilities.\n *\n * @see ../demos/debug.html\n */\n\ngoog.provide('goog.debug');\n\ngoog.require('goog.array');\ngoog.require('goog.debug.errorcontext');\ngoog.require('goog.userAgent');\n\n\n/** @define {boolean} Whether logging should be enabled. */\ngoog.debug.LOGGING_ENABLED =\n    goog.define('goog.debug.LOGGING_ENABLED', goog.DEBUG);\n\n\n/** @define {boolean} Whether to force \"sloppy\" stack building. */\ngoog.debug.FORCE_SLOPPY_STACKS =\n    goog.define('goog.debug.FORCE_SLOPPY_STACKS', false);\n\n\n/**\n * @define {boolean} TODO(user): Remove this hack once bug is resolved.\n */\ngoog.debug.CHECK_FOR_THROWN_EVENT =\n    goog.define('goog.debug.CHECK_FOR_THROWN_EVENT', false);\n\n\n\n/**\n * Catches onerror events fired by windows and similar objects.\n * @param {function(Object)} logFunc The function to call with the error\n *    information.\n * @param {boolean=} opt_cancel Whether to stop the error from reaching the\n *    browser.\n * @param {Object=} opt_target Object that fires onerror events.\n * @suppress {strictMissingProperties} onerror is not defined as a property\n *    on Object.\n */\ngoog.debug.catchErrors = function(logFunc, opt_cancel, opt_target) {\n  var target = opt_target || goog.global;\n  var oldErrorHandler = target.onerror;\n  var retVal = !!opt_cancel;\n\n  // Chrome interprets onerror return value backwards (http://crbug.com/92062)\n  // until it was fixed in webkit revision r94061 (Webkit 535.3). This\n  // workaround still needs to be skipped in Safari after the webkit change\n  // gets pushed out in Safari.\n  // See https://bugs.webkit.org/show_bug.cgi?id=67119\n  if (goog.userAgent.WEBKIT && !goog.userAgent.isVersionOrHigher('535.3')) {\n    retVal = !retVal;\n  }\n\n  /**\n   * New onerror handler for this target. This onerror handler follows the spec\n   * according to\n   * http://www.whatwg.org/specs/web-apps/current-work/#runtime-script-errors\n   * The spec was changed in August 2013 to support receiving column information\n   * and an error object for all scripts on the same origin or cross origin\n   * scripts with the proper headers. See\n   * https://mikewest.org/2013/08/debugging-runtime-errors-with-window-onerror\n   *\n   * @param {string} message The error message. For cross-origin errors, this\n   *     will be scrubbed to just \"Script error.\". For new browsers that have\n   *     updated to follow the latest spec, errors that come from origins that\n   *     have proper cross origin headers will not be scrubbed.\n   * @param {string} url The URL of the script that caused the error. The URL\n   *     will be scrubbed to \"\" for cross origin scripts unless the script has\n   *     proper cross origin headers and the browser has updated to the latest\n   *     spec.\n   * @param {number} line The line number in the script that the error\n   *     occurred on.\n   * @param {number=} opt_col The optional column number that the error\n   *     occurred on. Only browsers that have updated to the latest spec will\n   *     include this.\n   * @param {Error=} opt_error The optional actual error object for this\n   *     error that should include the stack. Only browsers that have updated\n   *     to the latest spec will inlude this parameter.\n   * @return {boolean} Whether to prevent the error from reaching the browser.\n   */\n  target.onerror = function(message, url, line, opt_col, opt_error) {\n    if (oldErrorHandler) {\n      oldErrorHandler(message, url, line, opt_col, opt_error);\n    }\n    logFunc({\n      message: message,\n      fileName: url,\n      line: line,\n      lineNumber: line,\n      col: opt_col,\n      error: opt_error\n    });\n    return retVal;\n  };\n};\n\n\n/**\n * Creates a string representing an object and all its properties.\n * @param {Object|null|undefined} obj Object to expose.\n * @param {boolean=} opt_showFn Show the functions as well as the properties,\n *     default is false.\n * @return {string} The string representation of `obj`.\n */\ngoog.debug.expose = function(obj, opt_showFn) {\n  if (typeof obj == 'undefined') {\n    return 'undefined';\n  }\n  if (obj == null) {\n    return 'NULL';\n  }\n  var str = [];\n\n  for (var x in obj) {\n    if (!opt_showFn && goog.isFunction(obj[x])) {\n      continue;\n    }\n    var s = x + ' = ';\n\n    try {\n      s += obj[x];\n    } catch (e) {\n      s += '*** ' + e + ' ***';\n    }\n    str.push(s);\n  }\n  return str.join('\\n');\n};\n\n\n/**\n * Creates a string representing a given primitive or object, and for an\n * object, all its properties and nested objects. NOTE: The output will include\n * Uids on all objects that were exposed. Any added Uids will be removed before\n * returning.\n * @param {*} obj Object to expose.\n * @param {boolean=} opt_showFn Also show properties that are functions (by\n *     default, functions are omitted).\n * @return {string} A string representation of `obj`.\n */\ngoog.debug.deepExpose = function(obj, opt_showFn) {\n  var str = [];\n\n  // Track any objects where deepExpose added a Uid, so they can be cleaned up\n  // before return. We do this globally, rather than only on ancestors so that\n  // if the same object appears in the output, you can see it.\n  var uidsToCleanup = [];\n  var ancestorUids = {};\n\n  var helper = function(obj, space) {\n    var nestspace = space + '  ';\n\n    var indentMultiline = function(str) {\n      return str.replace(/\\n/g, '\\n' + space);\n    };\n\n\n    try {\n      if (obj === undefined) {\n        str.push('undefined');\n      } else if (obj === null) {\n        str.push('NULL');\n      } else if (typeof obj === 'string') {\n        str.push('\"' + indentMultiline(obj) + '\"');\n      } else if (goog.isFunction(obj)) {\n        str.push(indentMultiline(String(obj)));\n      } else if (goog.isObject(obj)) {\n        // Add a Uid if needed. The struct calls implicitly adds them.\n        if (!goog.hasUid(obj)) {\n          uidsToCleanup.push(obj);\n        }\n        var uid = goog.getUid(obj);\n        if (ancestorUids[uid]) {\n          str.push('*** reference loop detected (id=' + uid + ') ***');\n        } else {\n          ancestorUids[uid] = true;\n          str.push('{');\n          for (var x in obj) {\n            if (!opt_showFn && goog.isFunction(obj[x])) {\n              continue;\n            }\n            str.push('\\n');\n            str.push(nestspace);\n            str.push(x + ' = ');\n            helper(obj[x], nestspace);\n          }\n          str.push('\\n' + space + '}');\n          delete ancestorUids[uid];\n        }\n      } else {\n        str.push(obj);\n      }\n    } catch (e) {\n      str.push('*** ' + e + ' ***');\n    }\n  };\n\n  helper(obj, '');\n\n  // Cleanup any Uids that were added by the deepExpose.\n  for (var i = 0; i < uidsToCleanup.length; i++) {\n    goog.removeUid(uidsToCleanup[i]);\n  }\n\n  return str.join('');\n};\n\n\n/**\n * Recursively outputs a nested array as a string.\n * @param {Array<?>} arr The array.\n * @return {string} String representing nested array.\n */\ngoog.debug.exposeArray = function(arr) {\n  var str = [];\n  for (var i = 0; i < arr.length; i++) {\n    if (Array.isArray(arr[i])) {\n      str.push(goog.debug.exposeArray(arr[i]));\n    } else {\n      str.push(arr[i]);\n    }\n  }\n  return '[ ' + str.join(', ') + ' ]';\n};\n\n\n/**\n * Normalizes the error/exception object between browsers.\n * @param {*} err Raw error object.\n * @return {{\n *    message: (?|undefined),\n *    name: (?|undefined),\n *    lineNumber: (?|undefined),\n *    fileName: (?|undefined),\n *    stack: (?|undefined)\n * }} Normalized error object.\n * @suppress {strictMissingProperties} properties not defined on err\n */\ngoog.debug.normalizeErrorObject = function(err) {\n  var href = goog.getObjectByName('window.location.href');\n  if (err == null) {\n    err = 'Unknown Error of type \"null/undefined\"';\n  }\n  if (typeof err === 'string') {\n    return {\n      'message': err,\n      'name': 'Unknown error',\n      'lineNumber': 'Not available',\n      'fileName': href,\n      'stack': 'Not available'\n    };\n  }\n\n  var lineNumber, fileName;\n  var threwError = false;\n\n  try {\n    lineNumber = err.lineNumber || err.line || 'Not available';\n  } catch (e) {\n    // Firefox 2 sometimes throws an error when accessing 'lineNumber':\n    // Message: Permission denied to get property UnnamedClass.lineNumber\n    lineNumber = 'Not available';\n    threwError = true;\n  }\n\n  try {\n    fileName = err.fileName || err.filename || err.sourceURL ||\n        // $googDebugFname may be set before a call to eval to set the filename\n        // that the eval is supposed to present.\n        goog.global['$googDebugFname'] || href;\n  } catch (e) {\n    // Firefox 2 may also throw an error when accessing 'filename'.\n    fileName = 'Not available';\n    threwError = true;\n  }\n\n  var stack = goog.debug.serializeErrorStack_(err);\n\n  // The IE Error object contains only the name and the message.\n  // The Safari Error object uses the line and sourceURL fields.\n  if (threwError || !err.lineNumber || !err.fileName || !err.stack ||\n      !err.message || !err.name) {\n    var message = err.message;\n    if (message == null) {\n      if (err.constructor && err.constructor instanceof Function) {\n        var ctorName = err.constructor.name ?\n            err.constructor.name :\n            goog.debug.getFunctionName(err.constructor);\n        message = 'Unknown Error of type \"' + ctorName + '\"';\n        // TODO(user): Remove this hack once bug is resolved.\n        if (goog.debug.CHECK_FOR_THROWN_EVENT && ctorName == 'Event') {\n          try {\n            message = message + ' with Event.type \"' + (err.type || '') + '\"';\n          } catch (e) {\n            // Just give up on getting more information out of the error object.\n          }\n        }\n      } else {\n        message = 'Unknown Error of unknown type';\n      }\n\n      // Avoid TypeError since toString could be missing from the instance\n      // (e.g. if created Object.create(null)).\n      if (typeof err.toString === 'function' &&\n          Object.prototype.toString !== err.toString) {\n        message += ': ' + err.toString();\n      }\n    }\n    return {\n      'message': message,\n      'name': err.name || 'UnknownError',\n      'lineNumber': lineNumber,\n      'fileName': fileName,\n      'stack': stack || 'Not available'\n    };\n  }\n  // Standards error object\n  // Typed !Object. Should be a subtype of the return type, but it's not.\n  err.stack = stack;\n  return /** @type {?} */ (err);\n};\n\n\n/**\n * Serialize stack by including the cause chain of the exception if it exists.\n *\n *\n * @param {*} e an exception that may have a cause\n * @param {!Object=} seen set of cause that have already been serialized\n * @return {string}\n * @private\n * @suppress {missingProperties} properties not defined on cause and e\n */\ngoog.debug.serializeErrorStack_ = function(e, seen) {\n  if (!seen) {\n    seen = {};\n  }\n  seen[goog.debug.serializeErrorAsKey_(e)] = true;\n\n  var stack = e['stack'] || '';\n\n  // Add cause if exists.\n  var cause = e.cause;\n  if (cause && !seen[goog.debug.serializeErrorAsKey_(cause)]) {\n    stack += '\\nCaused by: ';\n    // Some browsers like Chrome add the error message as the first frame of the\n    // stack, In this case we don't need to add it. Note: we don't use\n    // String.startsWith method because it might have to be polyfilled.\n    if (!cause.stack || cause.stack.indexOf(cause.toString()) != 0) {\n      stack += (typeof cause === 'string') ? cause : cause.message + '\\n';\n    }\n    stack += goog.debug.serializeErrorStack_(cause, seen);\n  }\n\n  return stack;\n};\n\n/**\n * Serialize an error to a string key.\n * @param {*} e an exception\n * @return {string}\n * @private\n */\ngoog.debug.serializeErrorAsKey_ = function(e) {\n  var keyPrefix = '';\n\n  if (typeof e.toString === 'function') {\n    keyPrefix = '' + e;\n  }\n\n  return keyPrefix + e['stack'];\n};\n\n\n/**\n * Converts an object to an Error using the object's toString if it's not\n * already an Error, adds a stacktrace if there isn't one, and optionally adds\n * an extra message.\n * @param {*} err The original thrown error, object, or string.\n * @param {string=} opt_message  optional additional message to add to the\n *     error.\n * @return {!Error} If err is an Error, it is enhanced and returned. Otherwise,\n *     it is converted to an Error which is enhanced and returned.\n */\ngoog.debug.enhanceError = function(err, opt_message) {\n  var error;\n  if (!(err instanceof Error)) {\n    error = Error(err);\n    if (Error.captureStackTrace) {\n      // Trim this function off the call stack, if we can.\n      Error.captureStackTrace(error, goog.debug.enhanceError);\n    }\n  } else {\n    error = err;\n  }\n\n  if (!error.stack) {\n    error.stack = goog.debug.getStacktrace(goog.debug.enhanceError);\n  }\n  if (opt_message) {\n    // find the first unoccupied 'messageX' property\n    var x = 0;\n    while (error['message' + x]) {\n      ++x;\n    }\n    error['message' + x] = String(opt_message);\n  }\n  return error;\n};\n\n\n/**\n * Converts an object to an Error using the object's toString if it's not\n * already an Error, adds a stacktrace if there isn't one, and optionally adds\n * context to the Error, which is reported by the closure error reporter.\n * @param {*} err The original thrown error, object, or string.\n * @param {!Object<string, string>=} opt_context Key-value context to add to the\n *     Error.\n * @return {!Error} If err is an Error, it is enhanced and returned. Otherwise,\n *     it is converted to an Error which is enhanced and returned.\n */\ngoog.debug.enhanceErrorWithContext = function(err, opt_context) {\n  var error = goog.debug.enhanceError(err);\n  if (opt_context) {\n    for (var key in opt_context) {\n      goog.debug.errorcontext.addErrorContext(error, key, opt_context[key]);\n    }\n  }\n  return error;\n};\n\n\n/**\n * Gets the current stack trace. Simple and iterative - doesn't worry about\n * catching circular references or getting the args.\n * @param {number=} opt_depth Optional maximum depth to trace back to.\n * @return {string} A string with the function names of all functions in the\n *     stack, separated by \\n.\n * @suppress {es5Strict}\n */\ngoog.debug.getStacktraceSimple = function(opt_depth) {\n  if (!goog.debug.FORCE_SLOPPY_STACKS) {\n    var stack = goog.debug.getNativeStackTrace_(goog.debug.getStacktraceSimple);\n    if (stack) {\n      return stack;\n    }\n    // NOTE: browsers that have strict mode support also have native \"stack\"\n    // properties.  Fall-through for legacy browser support.\n  }\n\n  var sb = [];\n  var fn = arguments.callee.caller;\n  var depth = 0;\n\n  while (fn && (!opt_depth || depth < opt_depth)) {\n    sb.push(goog.debug.getFunctionName(fn));\n    sb.push('()\\n');\n\n    try {\n      fn = fn.caller;\n    } catch (e) {\n      sb.push('[exception trying to get caller]\\n');\n      break;\n    }\n    depth++;\n    if (depth >= goog.debug.MAX_STACK_DEPTH) {\n      sb.push('[...long stack...]');\n      break;\n    }\n  }\n  if (opt_depth && depth >= opt_depth) {\n    sb.push('[...reached max depth limit...]');\n  } else {\n    sb.push('[end]');\n  }\n\n  return sb.join('');\n};\n\n\n/**\n * Max length of stack to try and output\n * @type {number}\n */\ngoog.debug.MAX_STACK_DEPTH = 50;\n\n\n/**\n * @param {Function} fn The function to start getting the trace from.\n * @return {?string}\n * @private\n */\ngoog.debug.getNativeStackTrace_ = function(fn) {\n  var tempErr = new Error();\n  if (Error.captureStackTrace) {\n    Error.captureStackTrace(tempErr, fn);\n    return String(tempErr.stack);\n  } else {\n    // IE10, only adds stack traces when an exception is thrown.\n    try {\n      throw tempErr;\n    } catch (e) {\n      tempErr = e;\n    }\n    var stack = tempErr.stack;\n    if (stack) {\n      return String(stack);\n    }\n  }\n  return null;\n};\n\n\n/**\n * Gets the current stack trace, either starting from the caller or starting\n * from a specified function that's currently on the call stack.\n * @param {?Function=} fn If provided, when collecting the stack trace all\n *     frames above the topmost call to this function, including that call,\n *     will be left out of the stack trace.\n * @return {string} Stack trace.\n * @suppress {es5Strict}\n */\ngoog.debug.getStacktrace = function(fn) {\n  var stack;\n  if (!goog.debug.FORCE_SLOPPY_STACKS) {\n    // Try to get the stack trace from the environment if it is available.\n    var contextFn = fn || goog.debug.getStacktrace;\n    stack = goog.debug.getNativeStackTrace_(contextFn);\n  }\n  if (!stack) {\n    // NOTE: browsers that have strict mode support also have native \"stack\"\n    // properties. This function will throw in strict mode.\n    stack = goog.debug.getStacktraceHelper_(fn || arguments.callee.caller, []);\n  }\n  return stack;\n};\n\n\n/**\n * Private helper for getStacktrace().\n * @param {?Function} fn If provided, when collecting the stack trace all\n *     frames above the topmost call to this function, including that call,\n *     will be left out of the stack trace.\n * @param {Array<!Function>} visited List of functions visited so far.\n * @return {string} Stack trace starting from function fn.\n * @suppress {es5Strict}\n * @private\n */\ngoog.debug.getStacktraceHelper_ = function(fn, visited) {\n  var sb = [];\n\n  // Circular reference, certain functions like bind seem to cause a recursive\n  // loop so we need to catch circular references\n  if (goog.array.contains(visited, fn)) {\n    sb.push('[...circular reference...]');\n\n    // Traverse the call stack until function not found or max depth is reached\n  } else if (fn && visited.length < goog.debug.MAX_STACK_DEPTH) {\n    sb.push(goog.debug.getFunctionName(fn) + '(');\n    var args = fn.arguments;\n    // Args may be null for some special functions such as host objects or eval.\n    for (var i = 0; args && i < args.length; i++) {\n      if (i > 0) {\n        sb.push(', ');\n      }\n      var argDesc;\n      var arg = args[i];\n      switch (typeof arg) {\n        case 'object':\n          argDesc = arg ? 'object' : 'null';\n          break;\n\n        case 'string':\n          argDesc = arg;\n          break;\n\n        case 'number':\n          argDesc = String(arg);\n          break;\n\n        case 'boolean':\n          argDesc = arg ? 'true' : 'false';\n          break;\n\n        case 'function':\n          argDesc = goog.debug.getFunctionName(arg);\n          argDesc = argDesc ? argDesc : '[fn]';\n          break;\n\n        case 'undefined':\n        default:\n          argDesc = typeof arg;\n          break;\n      }\n\n      if (argDesc.length > 40) {\n        argDesc = argDesc.substr(0, 40) + '...';\n      }\n      sb.push(argDesc);\n    }\n    visited.push(fn);\n    sb.push(')\\n');\n\n    try {\n      sb.push(goog.debug.getStacktraceHelper_(fn.caller, visited));\n    } catch (e) {\n      sb.push('[exception trying to get caller]\\n');\n    }\n\n  } else if (fn) {\n    sb.push('[...long stack...]');\n  } else {\n    sb.push('[end]');\n  }\n  return sb.join('');\n};\n\n\n/**\n * Gets a function name\n * @param {Function} fn Function to get name of.\n * @return {string} Function's name.\n */\ngoog.debug.getFunctionName = function(fn) {\n  if (goog.debug.fnNameCache_[fn]) {\n    return goog.debug.fnNameCache_[fn];\n  }\n\n  // Heuristically determine function name based on code.\n  var functionSource = String(fn);\n  if (!goog.debug.fnNameCache_[functionSource]) {\n    var matches = /function\\s+([^\\(]+)/m.exec(functionSource);\n    if (matches) {\n      var method = matches[1];\n      goog.debug.fnNameCache_[functionSource] = method;\n    } else {\n      goog.debug.fnNameCache_[functionSource] = '[Anonymous]';\n    }\n  }\n\n  return goog.debug.fnNameCache_[functionSource];\n};\n\n\n/**\n * Makes whitespace visible by replacing it with printable characters.\n * This is useful in finding diffrences between the expected and the actual\n * output strings of a testcase.\n * @param {string} string whose whitespace needs to be made visible.\n * @return {string} string whose whitespace is made visible.\n */\ngoog.debug.makeWhitespaceVisible = function(string) {\n  return string.replace(/ /g, '[_]')\n      .replace(/\\f/g, '[f]')\n      .replace(/\\n/g, '[n]\\n')\n      .replace(/\\r/g, '[r]')\n      .replace(/\\t/g, '[t]');\n};\n\n\n/**\n * Returns the type of a value. If a constructor is passed, and a suitable\n * string cannot be found, 'unknown type name' will be returned.\n *\n * <p>Forked rather than moved from {@link goog.asserts.getType_}\n * to avoid adding a dependency to goog.asserts.\n * @param {*} value A constructor, object, or primitive.\n * @return {string} The best display name for the value, or 'unknown type name'.\n */\ngoog.debug.runtimeType = function(value) {\n  if (value instanceof Function) {\n    return value.displayName || value.name || 'unknown type name';\n  } else if (value instanceof Object) {\n    return /** @type {string} */ (value.constructor.displayName) ||\n        value.constructor.name || Object.prototype.toString.call(value);\n  } else {\n    return value === null ? 'null' : typeof value;\n  }\n};\n\n\n/**\n * Hash map for storing function names that have already been looked up.\n * @type {Object}\n * @private\n */\ngoog.debug.fnNameCache_ = {};\n\n\n/**\n * Private internal function to support goog.debug.freeze.\n * @param {T} arg\n * @return {T}\n * @template T\n * @private\n */\ngoog.debug.freezeInternal_ = goog.DEBUG && Object.freeze || function(arg) {\n  return arg;\n};\n\n\n/**\n * Freezes the given object, but only in debug mode (and in browsers that\n * support it).  Note that this is a shallow freeze, so for deeply nested\n * objects it must be called at every level to ensure deep immutability.\n * @param {T} arg\n * @return {T}\n * @template T\n */\ngoog.debug.freeze = function(arg) {\n  // NOTE: this compiles to nothing, but hides the possible side effect of\n  // freezeInternal_ from the compiler so that the entire call can be\n  // removed if the result is not used.\n  return {\n    valueOf: function() {\n      return goog.debug.freezeInternal_(arg);\n    }\n  }.valueOf();\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Browser capability checks for the events package.\n */\n\ngoog.module('goog.events.BrowserFeature');\ngoog.module.declareLegacyNamespace();\n\nconst googUserAgent = goog.require('goog.userAgent');\n\n\n/**\n * Tricks Closure Compiler into believing that a function is pure.  The compiler\n * assumes that any `valueOf` function is pure, without analyzing its contents.\n *\n * @param {function(): T} fn\n * @return {T}\n * @template T\n */\nconst purify = (fn) => {\n  return ({valueOf: fn}).valueOf();\n};\n\n\n/**\n * Enum of browser capabilities.\n * @enum {boolean}\n */\nexports = {\n  /**\n   * Whether the button attribute of the event is W3C compliant.  False in\n   * Internet Explorer prior to version 9; document-version dependent.\n   */\n  HAS_W3C_BUTTON: !googUserAgent.IE || googUserAgent.isDocumentModeOrHigher(9),\n\n  /**\n   * Whether the browser supports full W3C event model.\n   */\n  HAS_W3C_EVENT_SUPPORT:\n      !googUserAgent.IE || googUserAgent.isDocumentModeOrHigher(9),\n\n  /**\n   * To prevent default in IE7-8 for certain keydown events we need set the\n   * keyCode to -1.\n   */\n  SET_KEY_CODE_TO_PREVENT_DEFAULT:\n      googUserAgent.IE && !googUserAgent.isVersionOrHigher('9'),\n\n  /**\n   * Whether the `navigator.onLine` property is supported.\n   */\n  HAS_NAVIGATOR_ONLINE_PROPERTY:\n      !googUserAgent.WEBKIT || googUserAgent.isVersionOrHigher('528'),\n\n  /**\n   * Whether HTML5 network online/offline events are supported.\n   */\n  HAS_HTML5_NETWORK_EVENT_SUPPORT:\n      googUserAgent.GECKO && googUserAgent.isVersionOrHigher('1.9b') ||\n      googUserAgent.IE && googUserAgent.isVersionOrHigher('8') ||\n      googUserAgent.OPERA && googUserAgent.isVersionOrHigher('9.5') ||\n      googUserAgent.WEBKIT && googUserAgent.isVersionOrHigher('528'),\n\n  /**\n   * Whether HTML5 network events fire on document.body, or otherwise the\n   * window.\n   */\n  HTML5_NETWORK_EVENTS_FIRE_ON_BODY:\n      googUserAgent.GECKO && !googUserAgent.isVersionOrHigher('8') ||\n      googUserAgent.IE && !googUserAgent.isVersionOrHigher('9'),\n\n  /**\n   * Whether touch is enabled in the browser.\n   */\n  TOUCH_ENABLED:\n      ('ontouchstart' in goog.global ||\n       !!(goog.global['document'] && document.documentElement &&\n          'ontouchstart' in document.documentElement) ||\n       // IE10 uses non-standard touch events, so it has a different check.\n       !!(goog.global['navigator'] &&\n          (goog.global['navigator']['maxTouchPoints'] ||\n           goog.global['navigator']['msMaxTouchPoints']))),\n\n  /**\n   * Whether addEventListener supports W3C standard pointer events.\n   * http://www.w3.org/TR/pointerevents/\n   */\n  POINTER_EVENTS: ('PointerEvent' in goog.global),\n\n  /**\n   * Whether addEventListener supports MSPointer events (only used in IE10).\n   * http://msdn.microsoft.com/en-us/library/ie/hh772103(v=vs.85).aspx\n   * http://msdn.microsoft.com/library/hh673557(v=vs.85).aspx\n   */\n  MSPOINTER_EVENTS:\n      ('MSPointerEvent' in goog.global &&\n       !!(goog.global['navigator'] &&\n          goog.global['navigator']['msPointerEnabled'])),\n\n  /**\n   * Whether addEventListener supports {passive: true}.\n   * https://developers.google.com/web/updates/2016/06/passive-event-listeners\n   */\n  PASSIVE_EVENTS: purify(function() {\n    // If we're in a web worker or other custom environment, we can't tell.\n    if (!goog.global.addEventListener || !Object.defineProperty) {  // IE 8\n      return false;\n    }\n\n    var passive = false;\n    var options = Object.defineProperty({}, 'passive', {\n      get: function() {\n        passive = true;\n      }\n    });\n    try {\n      goog.global.addEventListener('test', goog.nullFunction, options);\n      goog.global.removeEventListener('test', goog.nullFunction, options);\n    } catch (e) {\n    }\n\n    return passive;\n  })\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview A base class for event objects.\n */\n\n\ngoog.provide('goog.events.Event');\ngoog.provide('goog.events.EventLike');\n\n/**\n * goog.events.Event no longer depends on goog.Disposable. Keep requiring\n * goog.Disposable here to not break projects which assume this dependency.\n * @suppress {extraRequire}\n */\ngoog.require('goog.Disposable');\ngoog.require('goog.events.EventId');\n\n\n/**\n * A typedef for event like objects that are dispatchable via the\n * goog.events.dispatchEvent function. strings are treated as the type for a\n * goog.events.Event. Objects are treated as an extension of a new\n * goog.events.Event with the type property of the object being used as the type\n * of the Event.\n * @typedef {string|Object|goog.events.Event|goog.events.EventId}\n */\ngoog.events.EventLike;\n\n\n\n/**\n * A base class for event objects, so that they can support preventDefault and\n * stopPropagation.\n *\n * @param {string|!goog.events.EventId} type Event Type.\n * @param {Object=} opt_target Reference to the object that is the target of\n *     this event. It has to implement the `EventTarget` interface\n *     declared at {@link http://developer.mozilla.org/en/DOM/EventTarget}.\n * @constructor\n */\ngoog.events.Event = function(type, opt_target) {\n  /**\n   * Event type.\n   * @type {string}\n   */\n  this.type = type instanceof goog.events.EventId ? String(type) : type;\n\n  /**\n   * TODO(tbreisacher): The type should probably be\n   * EventTarget|goog.events.EventTarget.\n   *\n   * Target of the event.\n   * @type {Object|undefined}\n   */\n  this.target = opt_target;\n\n  /**\n   * Object that had the listener attached.\n   * @type {Object|undefined}\n   */\n  this.currentTarget = this.target;\n\n  /**\n   * Whether to cancel the event in internal capture/bubble processing for IE.\n   * @type {boolean}\n   * @private\n   */\n  this.propagationStopped_ = false;\n\n  /**\n   * Whether the default action has been prevented.\n   * This is a property to match the W3C specification at\n   * {@link http://www.w3.org/TR/DOM-Level-3-Events/\n   * #events-event-type-defaultPrevented}.\n   * Must be treated as read-only outside the class.\n   * @type {boolean}\n   */\n  this.defaultPrevented = false;\n};\n\n/**\n * @return {boolean} true iff internal propagation has been stopped.\n */\ngoog.events.Event.prototype.hasPropagationStopped = function() {\n  return this.propagationStopped_;\n};\n\n/**\n * Stops event propagation.\n */\ngoog.events.Event.prototype.stopPropagation = function() {\n  this.propagationStopped_ = true;\n};\n\n\n/**\n * Prevents the default action, for example a link redirecting to a url.\n */\ngoog.events.Event.prototype.preventDefault = function() {\n  this.defaultPrevented = true;\n};\n\n\n/**\n * Stops the propagation of the event. It is equivalent to\n * `e.stopPropagation()`, but can be used as the callback argument of\n * {@link goog.events.listen} without declaring another function.\n * @param {!goog.events.Event} e An event.\n */\ngoog.events.Event.stopPropagation = function(e) {\n  e.stopPropagation();\n};\n\n\n/**\n * Prevents the default action. It is equivalent to\n * `e.preventDefault()`, but can be used as the callback argument of\n * {@link goog.events.listen} without declaring another function.\n * @param {!goog.events.Event} e An event.\n */\ngoog.events.Event.preventDefault = function(e) {\n  e.preventDefault();\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview A patched, standardized event object for browser events.\n *\n * <pre>\n * The patched event object contains the following members:\n * - type           {string}    Event type, e.g. 'click'\n * - target         {Object}    The element that actually triggered the event\n * - currentTarget  {Object}    The element the listener is attached to\n * - relatedTarget  {Object}    For mouseover and mouseout, the previous object\n * - offsetX        {number}    X-coordinate relative to target\n * - offsetY        {number}    Y-coordinate relative to target\n * - clientX        {number}    X-coordinate relative to viewport\n * - clientY        {number}    Y-coordinate relative to viewport\n * - screenX        {number}    X-coordinate relative to the edge of the screen\n * - screenY        {number}    Y-coordinate relative to the edge of the screen\n * - button         {number}    Mouse button. Use isButton() to test.\n * - keyCode        {number}    Key-code\n * - ctrlKey        {boolean}   Was ctrl key depressed\n * - altKey         {boolean}   Was alt key depressed\n * - shiftKey       {boolean}   Was shift key depressed\n * - metaKey        {boolean}   Was meta key depressed\n * - pointerId      {number}    Pointer ID\n * - pointerType    {string}    Pointer type, e.g. 'mouse', 'pen', or 'touch'\n * - defaultPrevented {boolean} Whether the default action has been prevented\n * - state          {Object}    History state object\n *\n * NOTE: The keyCode member contains the raw browser keyCode. For normalized\n * key and character code use {@link goog.events.KeyHandler}.\n * </pre>\n */\n\ngoog.provide('goog.events.BrowserEvent');\ngoog.provide('goog.events.BrowserEvent.MouseButton');\ngoog.provide('goog.events.BrowserEvent.PointerType');\n\ngoog.require('goog.debug');\ngoog.require('goog.events.BrowserFeature');\ngoog.require('goog.events.Event');\ngoog.require('goog.events.EventType');\ngoog.require('goog.reflect');\ngoog.require('goog.userAgent');\n\n/**\n * @define {boolean} If true, use the layerX and layerY properties of a native\n * browser event over the offsetX and offsetY properties, which cause expensive\n * reflow. If layerX or layerY is not defined, offsetX and offsetY will be used\n * as usual.\n */\ngoog.events.USE_LAYER_XY_AS_OFFSET_XY =\n    goog.define('goog.events.USE_LAYER_XY_AS_OFFSET_XY', false);\n\n/**\n * Accepts a browser event object and creates a patched, cross browser event\n * object.\n * The content of this object will not be initialized if no event object is\n * provided. If this is the case, init() needs to be invoked separately.\n * @param {Event=} opt_e Browser event object.\n * @param {EventTarget=} opt_currentTarget Current target for event.\n * @constructor\n * @extends {goog.events.Event}\n */\ngoog.events.BrowserEvent = function(opt_e, opt_currentTarget) {\n  goog.events.BrowserEvent.base(this, 'constructor', opt_e ? opt_e.type : '');\n\n  /**\n   * Target that fired the event.\n   * @override\n   * @type {?Node}\n   */\n  this.target = null;\n\n  /**\n   * Node that had the listener attached.\n   * @override\n   * @type {?Node|undefined}\n   */\n  this.currentTarget = null;\n\n  /**\n   * For mouseover and mouseout events, the related object for the event.\n   * @type {?Node}\n   */\n  this.relatedTarget = null;\n\n  /**\n   * X-coordinate relative to target.\n   * @type {number}\n   */\n  this.offsetX = 0;\n\n  /**\n   * Y-coordinate relative to target.\n   * @type {number}\n   */\n  this.offsetY = 0;\n\n  /**\n   * X-coordinate relative to the window.\n   * @type {number}\n   */\n  this.clientX = 0;\n\n  /**\n   * Y-coordinate relative to the window.\n   * @type {number}\n   */\n  this.clientY = 0;\n\n  /**\n   * X-coordinate relative to the monitor.\n   * @type {number}\n   */\n  this.screenX = 0;\n\n  /**\n   * Y-coordinate relative to the monitor.\n   * @type {number}\n   */\n  this.screenY = 0;\n\n  /**\n   * Which mouse button was pressed.\n   * @type {number}\n   */\n  this.button = 0;\n\n  /**\n   * Key of key press.\n   * @type {string}\n   */\n  this.key = '';\n\n  /**\n   * Keycode of key press.\n   * @type {number}\n   */\n  this.keyCode = 0;\n\n  /**\n   * Keycode of key press.\n   * @type {number}\n   */\n  this.charCode = 0;\n\n  /**\n   * Whether control was pressed at time of event.\n   * @type {boolean}\n   */\n  this.ctrlKey = false;\n\n  /**\n   * Whether alt was pressed at time of event.\n   * @type {boolean}\n   */\n  this.altKey = false;\n\n  /**\n   * Whether shift was pressed at time of event.\n   * @type {boolean}\n   */\n  this.shiftKey = false;\n\n  /**\n   * Whether the meta key was pressed at time of event.\n   * @type {boolean}\n   */\n  this.metaKey = false;\n\n  /**\n   * History state object, only set for PopState events where it's a copy of the\n   * state object provided to pushState or replaceState.\n   * @type {?Object}\n   */\n  this.state = null;\n\n  /**\n   * Whether the default platform modifier key was pressed at time of event.\n   * (This is control for all platforms except Mac, where it's Meta.)\n   * @type {boolean}\n   */\n  this.platformModifierKey = false;\n\n  /**\n   * @type {number}\n   */\n  this.pointerId = 0;\n\n  /**\n   * @type {string}\n   */\n  this.pointerType = '';\n\n  /**\n   * The browser event object.\n   * @private {?Event}\n   */\n  this.event_ = null;\n\n  if (opt_e) {\n    this.init(opt_e, opt_currentTarget);\n  }\n};\ngoog.inherits(goog.events.BrowserEvent, goog.events.Event);\n\n\n/**\n * Normalized button constants for the mouse.\n * @enum {number}\n */\ngoog.events.BrowserEvent.MouseButton = {\n  LEFT: 0,\n  MIDDLE: 1,\n  RIGHT: 2\n};\n\n\n/**\n * Normalized pointer type constants for pointer events.\n * @enum {string}\n */\ngoog.events.BrowserEvent.PointerType = {\n  MOUSE: 'mouse',\n  PEN: 'pen',\n  TOUCH: 'touch'\n};\n\n\n/**\n * Static data for mapping mouse buttons.\n * @type {!Array<number>}\n * @deprecated Use `goog.events.BrowserEvent.IE_BUTTON_MAP` instead.\n */\ngoog.events.BrowserEvent.IEButtonMap = goog.debug.freeze([\n  1,  // LEFT\n  4,  // MIDDLE\n  2   // RIGHT\n]);\n\n\n/**\n * Static data for mapping mouse buttons.\n * @const {!Array<number>}\n */\ngoog.events.BrowserEvent.IE_BUTTON_MAP = goog.events.BrowserEvent.IEButtonMap;\n\n\n/**\n * Static data for mapping MSPointerEvent types to PointerEvent types.\n * @const {!Object<number, goog.events.BrowserEvent.PointerType>}\n */\ngoog.events.BrowserEvent.IE_POINTER_TYPE_MAP = goog.debug.freeze({\n  2: goog.events.BrowserEvent.PointerType.TOUCH,\n  3: goog.events.BrowserEvent.PointerType.PEN,\n  4: goog.events.BrowserEvent.PointerType.MOUSE\n});\n\n\n/**\n * Accepts a browser event object and creates a patched, cross browser event\n * object.\n * @param {Event} e Browser event object.\n * @param {EventTarget=} opt_currentTarget Current target for event.\n */\ngoog.events.BrowserEvent.prototype.init = function(e, opt_currentTarget) {\n  var type = this.type = e.type;\n\n  /**\n   * On touch devices use the first \"changed touch\" as the relevant touch.\n   * @type {?Touch}\n   */\n  var relevantTouch =\n      e.changedTouches && e.changedTouches.length ? e.changedTouches[0] : null;\n\n  // TODO(nicksantos): Change this.target to type EventTarget.\n  this.target = /** @type {Node} */ (e.target) || e.srcElement;\n\n  // TODO(nicksantos): Change this.currentTarget to type EventTarget.\n  this.currentTarget = /** @type {Node} */ (opt_currentTarget);\n\n  var relatedTarget = /** @type {Node} */ (e.relatedTarget);\n  if (relatedTarget) {\n    // There's a bug in FireFox where sometimes, relatedTarget will be a\n    // chrome element, and accessing any property of it will get a permission\n    // denied exception. See:\n    // https://bugzilla.mozilla.org/show_bug.cgi?id=497780\n    if (goog.userAgent.GECKO) {\n      if (!goog.reflect.canAccessProperty(relatedTarget, 'nodeName')) {\n        relatedTarget = null;\n      }\n    }\n  } else if (type == goog.events.EventType.MOUSEOVER) {\n    relatedTarget = e.fromElement;\n  } else if (type == goog.events.EventType.MOUSEOUT) {\n    relatedTarget = e.toElement;\n  }\n\n  this.relatedTarget = relatedTarget;\n\n  if (relevantTouch) {\n    this.clientX = relevantTouch.clientX !== undefined ? relevantTouch.clientX :\n                                                         relevantTouch.pageX;\n    this.clientY = relevantTouch.clientY !== undefined ? relevantTouch.clientY :\n                                                         relevantTouch.pageY;\n    this.screenX = relevantTouch.screenX || 0;\n    this.screenY = relevantTouch.screenY || 0;\n  } else {\n    if (goog.events.USE_LAYER_XY_AS_OFFSET_XY) {\n      this.offsetX = (e.layerX !== undefined) ? e.layerX : e.offsetX;\n      this.offsetY = (e.layerY !== undefined) ? e.layerY : e.offsetY;\n    } else {\n      // Webkit emits a lame warning whenever layerX/layerY is accessed.\n      // http://code.google.com/p/chromium/issues/detail?id=101733\n      this.offsetX = (goog.userAgent.WEBKIT || e.offsetX !== undefined) ?\n          e.offsetX :\n          e.layerX;\n      this.offsetY = (goog.userAgent.WEBKIT || e.offsetY !== undefined) ?\n          e.offsetY :\n          e.layerY;\n    }\n    this.clientX = e.clientX !== undefined ? e.clientX : e.pageX;\n    this.clientY = e.clientY !== undefined ? e.clientY : e.pageY;\n    this.screenX = e.screenX || 0;\n    this.screenY = e.screenY || 0;\n  }\n\n  this.button = e.button;\n\n  this.keyCode = e.keyCode || 0;\n  this.key = e.key || '';\n  this.charCode = e.charCode || (type == 'keypress' ? e.keyCode : 0);\n  this.ctrlKey = e.ctrlKey;\n  this.altKey = e.altKey;\n  this.shiftKey = e.shiftKey;\n  this.metaKey = e.metaKey;\n  this.platformModifierKey = goog.userAgent.MAC ? e.metaKey : e.ctrlKey;\n  this.pointerId = e.pointerId || 0;\n  this.pointerType = goog.events.BrowserEvent.getPointerType_(e);\n  this.state = e.state;\n  this.event_ = e;\n  if (e.defaultPrevented) {\n    this.preventDefault();\n  }\n};\n\n\n/**\n * Tests to see which button was pressed during the event. This is really only\n * useful in IE and Gecko browsers. And in IE, it's only useful for\n * mousedown/mouseup events, because click only fires for the left mouse button.\n *\n * Safari 2 only reports the left button being clicked, and uses the value '1'\n * instead of 0. Opera only reports a mousedown event for the middle button, and\n * no mouse events for the right button. Opera has default behavior for left and\n * middle click that can only be overridden via a configuration setting.\n *\n * There's a nice table of this mess at http://www.unixpapa.com/js/mouse.html.\n *\n * @param {goog.events.BrowserEvent.MouseButton} button The button\n *     to test for.\n * @return {boolean} True if button was pressed.\n */\ngoog.events.BrowserEvent.prototype.isButton = function(button) {\n  if (!goog.events.BrowserFeature.HAS_W3C_BUTTON) {\n    if (this.type == 'click') {\n      return button == goog.events.BrowserEvent.MouseButton.LEFT;\n    } else {\n      return !!(\n          this.event_.button & goog.events.BrowserEvent.IE_BUTTON_MAP[button]);\n    }\n  } else {\n    return this.event_.button == button;\n  }\n};\n\n\n/**\n * Whether this has an \"action\"-producing mouse button.\n *\n * By definition, this includes left-click on windows/linux, and left-click\n * without the ctrl key on Macs.\n *\n * @return {boolean} The result.\n */\ngoog.events.BrowserEvent.prototype.isMouseActionButton = function() {\n  // Ctrl+click should never behave like a left-click on mac, regardless of\n  // whether or not the browser will actually ever emit such an event.  If\n  // we see it, treat it like right-click always.\n  return this.isButton(goog.events.BrowserEvent.MouseButton.LEFT) &&\n      !(goog.userAgent.MAC && this.ctrlKey);\n};\n\n\n/**\n * @override\n */\ngoog.events.BrowserEvent.prototype.stopPropagation = function() {\n  goog.events.BrowserEvent.superClass_.stopPropagation.call(this);\n  if (this.event_.stopPropagation) {\n    this.event_.stopPropagation();\n  } else {\n    this.event_.cancelBubble = true;\n  }\n};\n\n\n/**\n * @override\n */\ngoog.events.BrowserEvent.prototype.preventDefault = function() {\n  goog.events.BrowserEvent.superClass_.preventDefault.call(this);\n  var be = this.event_;\n  if (!be.preventDefault) {\n    be.returnValue = false;\n    if (goog.events.BrowserFeature.SET_KEY_CODE_TO_PREVENT_DEFAULT) {\n\n      try {\n        // Most keys can be prevented using returnValue. Some special keys\n        // require setting the keyCode to -1 as well:\n        //\n        // In IE7:\n        // F3, F5, F10, F11, Ctrl+P, Crtl+O, Ctrl+F (these are taken from IE6)\n        //\n        // In IE8:\n        // Ctrl+P, Crtl+O, Ctrl+F (F1-F12 cannot be stopped through the event)\n        //\n        // We therefore do this for all function keys as well as when Ctrl key\n        // is pressed.\n        var VK_F1 = 112;\n        var VK_F12 = 123;\n        if (be.ctrlKey || be.keyCode >= VK_F1 && be.keyCode <= VK_F12) {\n          be.keyCode = -1;\n        }\n      } catch (ex) {\n        // IE throws an 'access denied' exception when trying to change\n        // keyCode in some situations (e.g. srcElement is input[type=file],\n        // or srcElement is an anchor tag rewritten by parent's innerHTML).\n        // Do nothing in this case.\n      }\n    }\n  } else {\n    be.preventDefault();\n  }\n};\n\n\n/**\n * @return {Event} The underlying browser event object.\n */\ngoog.events.BrowserEvent.prototype.getBrowserEvent = function() {\n  return this.event_;\n};\n\n\n/**\n * Extracts the pointer type from the given event.\n * @param {!Event} e\n * @return {string} The pointer type, e.g. 'mouse', 'pen', or 'touch'.\n * @private\n */\ngoog.events.BrowserEvent.getPointerType_ = function(e) {\n  if (typeof (e.pointerType) === 'string') {\n    return e.pointerType;\n  }\n  // IE10 uses integer codes for pointer type.\n  // https://msdn.microsoft.com/en-us/library/hh772359(v=vs.85).aspx\n  return goog.events.BrowserEvent.IE_POINTER_TYPE_MAP[e.pointerType] || '';\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Event Types.\n */\n\n\ngoog.provide('goog.events.EventType');\ngoog.provide('goog.events.MouseAsMouseEventType');\ngoog.provide('goog.events.MouseEvents');\ngoog.provide('goog.events.PointerAsMouseEventType');\ngoog.provide('goog.events.PointerAsTouchEventType');\ngoog.provide('goog.events.PointerFallbackEventType');\ngoog.provide('goog.events.PointerTouchFallbackEventType');\n\ngoog.require('goog.events.BrowserFeature');\ngoog.require('goog.userAgent');\n\n\n/**\n * Returns a prefixed event name for the current browser.\n * @param {string} eventName The name of the event.\n * @return {string} The prefixed event name.\n * @private\n */\ngoog.events.getVendorPrefixedName_ = function(eventName) {\n  return goog.userAgent.WEBKIT ?\n      'webkit' + eventName :\n      (goog.userAgent.OPERA ? 'o' + eventName.toLowerCase() :\n                              eventName.toLowerCase());\n};\n\n\n/**\n * Constants for event names.\n * @enum {string}\n */\ngoog.events.EventType = {\n  // Mouse events\n  CLICK: 'click',\n  RIGHTCLICK: 'rightclick',\n  DBLCLICK: 'dblclick',\n  AUXCLICK: 'auxclick',\n  MOUSEDOWN: 'mousedown',\n  MOUSEUP: 'mouseup',\n  MOUSEOVER: 'mouseover',\n  MOUSEOUT: 'mouseout',\n  MOUSEMOVE: 'mousemove',\n  MOUSEENTER: 'mouseenter',\n  MOUSELEAVE: 'mouseleave',\n\n  // Non-existent event; will never fire. This exists as a mouse counterpart to\n  // POINTERCANCEL.\n  MOUSECANCEL: 'mousecancel',\n\n  // Selection events.\n  // https://www.w3.org/TR/selection-api/\n  SELECTIONCHANGE: 'selectionchange',\n  SELECTSTART: 'selectstart',  // IE, Safari, Chrome\n\n  // Wheel events\n  // http://www.w3.org/TR/DOM-Level-3-Events/#events-wheelevents\n  WHEEL: 'wheel',\n\n  // Key events\n  KEYPRESS: 'keypress',\n  KEYDOWN: 'keydown',\n  KEYUP: 'keyup',\n\n  // Focus\n  BLUR: 'blur',\n  FOCUS: 'focus',\n  DEACTIVATE: 'deactivate',  // IE only\n  FOCUSIN: 'focusin',\n  FOCUSOUT: 'focusout',\n\n  // Forms\n  CHANGE: 'change',\n  RESET: 'reset',\n  SELECT: 'select',\n  SUBMIT: 'submit',\n  INPUT: 'input',\n  PROPERTYCHANGE: 'propertychange',  // IE only\n\n  // Drag and drop\n  DRAGSTART: 'dragstart',\n  DRAG: 'drag',\n  DRAGENTER: 'dragenter',\n  DRAGOVER: 'dragover',\n  DRAGLEAVE: 'dragleave',\n  DROP: 'drop',\n  DRAGEND: 'dragend',\n\n  // Touch events\n  // Note that other touch events exist, but we should follow the W3C list here.\n  // http://www.w3.org/TR/touch-events/#list-of-touchevent-types\n  TOUCHSTART: 'touchstart',\n  TOUCHMOVE: 'touchmove',\n  TOUCHEND: 'touchend',\n  TOUCHCANCEL: 'touchcancel',\n\n  // Misc\n  BEFOREUNLOAD: 'beforeunload',\n  CONSOLEMESSAGE: 'consolemessage',\n  CONTEXTMENU: 'contextmenu',\n  DEVICECHANGE: 'devicechange',\n  DEVICEMOTION: 'devicemotion',\n  DEVICEORIENTATION: 'deviceorientation',\n  DOMCONTENTLOADED: 'DOMContentLoaded',\n  ERROR: 'error',\n  HELP: 'help',\n  LOAD: 'load',\n  LOSECAPTURE: 'losecapture',\n  ORIENTATIONCHANGE: 'orientationchange',\n  READYSTATECHANGE: 'readystatechange',\n  RESIZE: 'resize',\n  SCROLL: 'scroll',\n  UNLOAD: 'unload',\n\n  // Media events\n  CANPLAY: 'canplay',\n  CANPLAYTHROUGH: 'canplaythrough',\n  DURATIONCHANGE: 'durationchange',\n  EMPTIED: 'emptied',\n  ENDED: 'ended',\n  LOADEDDATA: 'loadeddata',\n  LOADEDMETADATA: 'loadedmetadata',\n  PAUSE: 'pause',\n  PLAY: 'play',\n  PLAYING: 'playing',\n  PROGRESS: 'progress',\n  RATECHANGE: 'ratechange',\n  SEEKED: 'seeked',\n  SEEKING: 'seeking',\n  STALLED: 'stalled',\n  SUSPEND: 'suspend',\n  TIMEUPDATE: 'timeupdate',\n  VOLUMECHANGE: 'volumechange',\n  WAITING: 'waiting',\n\n  // Media Source Extensions events\n  // https://www.w3.org/TR/media-source/#mediasource-events\n  SOURCEOPEN: 'sourceopen',\n  SOURCEENDED: 'sourceended',\n  SOURCECLOSED: 'sourceclosed',\n  // https://www.w3.org/TR/media-source/#sourcebuffer-events\n  ABORT: 'abort',\n  UPDATE: 'update',\n  UPDATESTART: 'updatestart',\n  UPDATEEND: 'updateend',\n\n  // HTML 5 History events\n  // See http://www.w3.org/TR/html5/browsers.html#event-definitions-0\n  HASHCHANGE: 'hashchange',\n  PAGEHIDE: 'pagehide',\n  PAGESHOW: 'pageshow',\n  POPSTATE: 'popstate',\n\n  // Copy and Paste\n  // Support is limited. Make sure it works on your favorite browser\n  // before using.\n  // http://www.quirksmode.org/dom/events/cutcopypaste.html\n  COPY: 'copy',\n  PASTE: 'paste',\n  CUT: 'cut',\n  BEFORECOPY: 'beforecopy',\n  BEFORECUT: 'beforecut',\n  BEFOREPASTE: 'beforepaste',\n\n  // HTML5 online/offline events.\n  // http://www.w3.org/TR/offline-webapps/#related\n  ONLINE: 'online',\n  OFFLINE: 'offline',\n\n  // HTML 5 worker events\n  MESSAGE: 'message',\n  CONNECT: 'connect',\n\n  // Service Worker Events - ServiceWorkerGlobalScope context\n  // See https://w3c.github.io/ServiceWorker/#execution-context-events\n  // Note: message event defined in worker events section\n  INSTALL: 'install',\n  ACTIVATE: 'activate',\n  FETCH: 'fetch',\n  FOREIGNFETCH: 'foreignfetch',\n  MESSAGEERROR: 'messageerror',\n\n  // Service Worker Events - Document context\n  // See https://w3c.github.io/ServiceWorker/#document-context-events\n  STATECHANGE: 'statechange',\n  UPDATEFOUND: 'updatefound',\n  CONTROLLERCHANGE: 'controllerchange',\n\n  // CSS animation events.\n  ANIMATIONSTART: goog.events.getVendorPrefixedName_('AnimationStart'),\n  ANIMATIONEND: goog.events.getVendorPrefixedName_('AnimationEnd'),\n  ANIMATIONITERATION: goog.events.getVendorPrefixedName_('AnimationIteration'),\n\n  // CSS transition events. Based on the browser support described at:\n  // https://developer.mozilla.org/en/css/css_transitions#Browser_compatibility\n  TRANSITIONEND: goog.events.getVendorPrefixedName_('TransitionEnd'),\n\n  // W3C Pointer Events\n  // http://www.w3.org/TR/pointerevents/\n  POINTERDOWN: 'pointerdown',\n  POINTERUP: 'pointerup',\n  POINTERCANCEL: 'pointercancel',\n  POINTERMOVE: 'pointermove',\n  POINTEROVER: 'pointerover',\n  POINTEROUT: 'pointerout',\n  POINTERENTER: 'pointerenter',\n  POINTERLEAVE: 'pointerleave',\n  GOTPOINTERCAPTURE: 'gotpointercapture',\n  LOSTPOINTERCAPTURE: 'lostpointercapture',\n\n  // IE specific events.\n  // See http://msdn.microsoft.com/en-us/library/ie/hh772103(v=vs.85).aspx\n  // Note: these events will be supplanted in IE11.\n  MSGESTURECHANGE: 'MSGestureChange',\n  MSGESTUREEND: 'MSGestureEnd',\n  MSGESTUREHOLD: 'MSGestureHold',\n  MSGESTURESTART: 'MSGestureStart',\n  MSGESTURETAP: 'MSGestureTap',\n  MSGOTPOINTERCAPTURE: 'MSGotPointerCapture',\n  MSINERTIASTART: 'MSInertiaStart',\n  MSLOSTPOINTERCAPTURE: 'MSLostPointerCapture',\n  MSPOINTERCANCEL: 'MSPointerCancel',\n  MSPOINTERDOWN: 'MSPointerDown',\n  MSPOINTERENTER: 'MSPointerEnter',\n  MSPOINTERHOVER: 'MSPointerHover',\n  MSPOINTERLEAVE: 'MSPointerLeave',\n  MSPOINTERMOVE: 'MSPointerMove',\n  MSPOINTEROUT: 'MSPointerOut',\n  MSPOINTEROVER: 'MSPointerOver',\n  MSPOINTERUP: 'MSPointerUp',\n\n  // Native IMEs/input tools events.\n  TEXT: 'text',\n  // The textInput event is supported in IE9+, but only in lower case. All other\n  // browsers use the camel-case event name.\n  TEXTINPUT: goog.userAgent.IE ? 'textinput' : 'textInput',\n  COMPOSITIONSTART: 'compositionstart',\n  COMPOSITIONUPDATE: 'compositionupdate',\n  COMPOSITIONEND: 'compositionend',\n\n  // The beforeinput event is initially only supported in Safari. See\n  // https://bugs.chromium.org/p/chromium/issues/detail?id=342670 for Chrome\n  // implementation tracking.\n  BEFOREINPUT: 'beforeinput',\n\n  // Webview tag events\n  // See https://developer.chrome.com/apps/tags/webview\n  EXIT: 'exit',\n  LOADABORT: 'loadabort',\n  LOADCOMMIT: 'loadcommit',\n  LOADREDIRECT: 'loadredirect',\n  LOADSTART: 'loadstart',\n  LOADSTOP: 'loadstop',\n  RESPONSIVE: 'responsive',\n  SIZECHANGED: 'sizechanged',\n  UNRESPONSIVE: 'unresponsive',\n\n  // HTML5 Page Visibility API.  See details at\n  // `goog.labs.dom.PageVisibilityMonitor`.\n  VISIBILITYCHANGE: 'visibilitychange',\n\n  // LocalStorage event.\n  STORAGE: 'storage',\n\n  // DOM Level 2 mutation events (deprecated).\n  DOMSUBTREEMODIFIED: 'DOMSubtreeModified',\n  DOMNODEINSERTED: 'DOMNodeInserted',\n  DOMNODEREMOVED: 'DOMNodeRemoved',\n  DOMNODEREMOVEDFROMDOCUMENT: 'DOMNodeRemovedFromDocument',\n  DOMNODEINSERTEDINTODOCUMENT: 'DOMNodeInsertedIntoDocument',\n  DOMATTRMODIFIED: 'DOMAttrModified',\n  DOMCHARACTERDATAMODIFIED: 'DOMCharacterDataModified',\n\n  // Print events.\n  BEFOREPRINT: 'beforeprint',\n  AFTERPRINT: 'afterprint',\n\n  // Web app manifest events.\n  BEFOREINSTALLPROMPT: 'beforeinstallprompt',\n  APPINSTALLED: 'appinstalled'\n};\n\n\n/**\n * Returns one of the given pointer fallback event names in order of preference:\n *   1. pointerEventName\n *   2. msPointerEventName\n *   3. fallbackEventName\n * @param {string} pointerEventName\n * @param {string} msPointerEventName\n * @param {string} fallbackEventName\n * @return {string} The supported pointer or fallback (mouse or touch) event\n *     name.\n * @private\n */\ngoog.events.getPointerFallbackEventName_ = function(\n    pointerEventName, msPointerEventName, fallbackEventName) {\n  if (goog.events.BrowserFeature.POINTER_EVENTS) {\n    return pointerEventName;\n  }\n  if (goog.events.BrowserFeature.MSPOINTER_EVENTS) {\n    return msPointerEventName;\n  }\n  return fallbackEventName;\n};\n\n\n/**\n * Constants for pointer event names that fall back to corresponding mouse event\n * names on unsupported platforms. These are intended to be drop-in replacements\n * for corresponding values in `goog.events.EventType`.\n * @enum {string}\n */\ngoog.events.PointerFallbackEventType = {\n  POINTERDOWN: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERDOWN, goog.events.EventType.MSPOINTERDOWN,\n      goog.events.EventType.MOUSEDOWN),\n  POINTERUP: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERUP, goog.events.EventType.MSPOINTERUP,\n      goog.events.EventType.MOUSEUP),\n  POINTERCANCEL: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERCANCEL,\n      goog.events.EventType.MSPOINTERCANCEL,\n      // When falling back to mouse events, there is no MOUSECANCEL equivalent\n      // of POINTERCANCEL. In this case POINTERUP already falls back to MOUSEUP\n      // which represents both UP and CANCEL. POINTERCANCEL does not fall back\n      // to MOUSEUP to prevent listening twice on the same event.\n      goog.events.EventType.MOUSECANCEL),\n  POINTERMOVE: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERMOVE, goog.events.EventType.MSPOINTERMOVE,\n      goog.events.EventType.MOUSEMOVE),\n  POINTEROVER: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTEROVER, goog.events.EventType.MSPOINTEROVER,\n      goog.events.EventType.MOUSEOVER),\n  POINTEROUT: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTEROUT, goog.events.EventType.MSPOINTEROUT,\n      goog.events.EventType.MOUSEOUT),\n  POINTERENTER: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERENTER, goog.events.EventType.MSPOINTERENTER,\n      goog.events.EventType.MOUSEENTER),\n  POINTERLEAVE: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERLEAVE, goog.events.EventType.MSPOINTERLEAVE,\n      goog.events.EventType.MOUSELEAVE)\n};\n\n\n/**\n * Constants for pointer event names that fall back to corresponding touch event\n * names on unsupported platforms. These are intended to be drop-in replacements\n * for corresponding values in `goog.events.EventType`.\n * @enum {string}\n */\ngoog.events.PointerTouchFallbackEventType = {\n  POINTERDOWN: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERDOWN, goog.events.EventType.MSPOINTERDOWN,\n      goog.events.EventType.TOUCHSTART),\n  POINTERUP: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERUP, goog.events.EventType.MSPOINTERUP,\n      goog.events.EventType.TOUCHEND),\n  POINTERCANCEL: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERCANCEL,\n      goog.events.EventType.MSPOINTERCANCEL, goog.events.EventType.TOUCHCANCEL),\n  POINTERMOVE: goog.events.getPointerFallbackEventName_(\n      goog.events.EventType.POINTERMOVE, goog.events.EventType.MSPOINTERMOVE,\n      goog.events.EventType.TOUCHMOVE)\n};\n\n\n/**\n * Mapping of mouse event names to underlying browser event names.\n * @typedef {{\n *     MOUSEDOWN: string,\n *     MOUSEUP: string,\n *     MOUSECANCEL:string,\n *     MOUSEMOVE:string,\n *     MOUSEOVER:string,\n *     MOUSEOUT:string,\n *     MOUSEENTER:string,\n *     MOUSELEAVE: string,\n * }}\n */\ngoog.events.MouseEvents;\n\n\n/**\n * An alias for `goog.events.EventType.MOUSE*` event types that is overridden by\n * corresponding `POINTER*` event types.\n * @const {!goog.events.MouseEvents}\n */\ngoog.events.PointerAsMouseEventType = {\n  MOUSEDOWN: goog.events.PointerFallbackEventType.POINTERDOWN,\n  MOUSEUP: goog.events.PointerFallbackEventType.POINTERUP,\n  MOUSECANCEL: goog.events.PointerFallbackEventType.POINTERCANCEL,\n  MOUSEMOVE: goog.events.PointerFallbackEventType.POINTERMOVE,\n  MOUSEOVER: goog.events.PointerFallbackEventType.POINTEROVER,\n  MOUSEOUT: goog.events.PointerFallbackEventType.POINTEROUT,\n  MOUSEENTER: goog.events.PointerFallbackEventType.POINTERENTER,\n  MOUSELEAVE: goog.events.PointerFallbackEventType.POINTERLEAVE\n};\n\n\n/**\n * An alias for `goog.events.EventType.MOUSE*` event types that continue to use\n * mouse events.\n * @const {!goog.events.MouseEvents}\n */\ngoog.events.MouseAsMouseEventType = {\n  MOUSEDOWN: goog.events.EventType.MOUSEDOWN,\n  MOUSEUP: goog.events.EventType.MOUSEUP,\n  MOUSECANCEL: goog.events.EventType.MOUSECANCEL,\n  MOUSEMOVE: goog.events.EventType.MOUSEMOVE,\n  MOUSEOVER: goog.events.EventType.MOUSEOVER,\n  MOUSEOUT: goog.events.EventType.MOUSEOUT,\n  MOUSEENTER: goog.events.EventType.MOUSEENTER,\n  MOUSELEAVE: goog.events.EventType.MOUSELEAVE\n};\n\n\n/**\n * An alias for `goog.events.EventType.TOUCH*` event types that is overridden by\n * corresponding `POINTER*` event types.\n * @enum {string}\n */\ngoog.events.PointerAsTouchEventType = {\n  TOUCHCANCEL: goog.events.PointerTouchFallbackEventType.POINTERCANCEL,\n  TOUCHEND: goog.events.PointerTouchFallbackEventType.POINTERUP,\n  TOUCHMOVE: goog.events.PointerTouchFallbackEventType.POINTERMOVE,\n  TOUCHSTART: goog.events.PointerTouchFallbackEventType.POINTERDOWN\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview An interface for a listenable JavaScript object.\n */\n\ngoog.provide('goog.events.Listenable');\ngoog.provide('goog.events.ListenableKey');\n/** @suppress {extraRequire} */\ngoog.require('goog.events.EventId');\n\ngoog.requireType('goog.events.EventLike');\n\n\n/**\n * A listenable interface. A listenable is an object with the ability\n * to dispatch/broadcast events to \"event listeners\" registered via\n * listen/listenOnce.\n *\n * The interface allows for an event propagation mechanism similar\n * to one offered by native browser event targets, such as\n * capture/bubble mechanism, stopping propagation, and preventing\n * default actions. Capture/bubble mechanism depends on the ancestor\n * tree constructed via `#getParentEventTarget`; this tree\n * must be directed acyclic graph. The meaning of default action(s)\n * in preventDefault is specific to a particular use case.\n *\n * Implementations that do not support capture/bubble or can not have\n * a parent listenable can simply not implement any ability to set the\n * parent listenable (and have `#getParentEventTarget` return\n * null).\n *\n * Implementation of this class can be used with or independently from\n * goog.events.\n *\n * Implementation must call `#addImplementation(implClass)`.\n *\n * @interface\n * @see goog.events\n * @see http://www.w3.org/TR/DOM-Level-2-Events/events.html\n */\ngoog.events.Listenable = function() {};\n\n\n/**\n * An expando property to indicate that an object implements\n * goog.events.Listenable.\n *\n * See addImplementation/isImplementedBy.\n *\n * @type {string}\n * @const\n */\ngoog.events.Listenable.IMPLEMENTED_BY_PROP =\n    'closure_listenable_' + ((Math.random() * 1e6) | 0);\n\n\n/**\n * Marks a given class (constructor) as an implementation of\n * Listenable, so that we can query that fact at runtime. The class\n * must have already implemented the interface.\n * @param {function(new:goog.events.Listenable,...)} cls The class constructor.\n *     The corresponding class must have already implemented the interface.\n */\ngoog.events.Listenable.addImplementation = function(cls) {\n  cls.prototype[goog.events.Listenable.IMPLEMENTED_BY_PROP] = true;\n};\n\n\n/**\n * @param {Object} obj The object to check.\n * @return {boolean} Whether a given instance implements Listenable. The\n *     class/superclass of the instance must call addImplementation.\n */\ngoog.events.Listenable.isImplementedBy = function(obj) {\n  return !!(obj && obj[goog.events.Listenable.IMPLEMENTED_BY_PROP]);\n};\n\n\n/**\n * Adds an event listener. A listener can only be added once to an\n * object and if it is added again the key for the listener is\n * returned. Note that if the existing listener is a one-off listener\n * (registered via listenOnce), it will no longer be a one-off\n * listener after a call to listen().\n *\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The event type id.\n * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener Callback\n *     method.\n * @param {boolean=} opt_useCapture Whether to fire in capture phase\n *     (defaults to false).\n * @param {SCOPE=} opt_listenerScope Object in whose scope to call the\n *     listener.\n * @return {!goog.events.ListenableKey} Unique key for the listener.\n * @template SCOPE,EVENTOBJ\n */\ngoog.events.Listenable.prototype.listen;\n\n\n/**\n * Adds an event listener that is removed automatically after the\n * listener fired once.\n *\n * If an existing listener already exists, listenOnce will do\n * nothing. In particular, if the listener was previously registered\n * via listen(), listenOnce() will not turn the listener into a\n * one-off listener. Similarly, if there is already an existing\n * one-off listener, listenOnce does not modify the listeners (it is\n * still a once listener).\n *\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The event type id.\n * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener Callback\n *     method.\n * @param {boolean=} opt_useCapture Whether to fire in capture phase\n *     (defaults to false).\n * @param {SCOPE=} opt_listenerScope Object in whose scope to call the\n *     listener.\n * @return {!goog.events.ListenableKey} Unique key for the listener.\n * @template SCOPE,EVENTOBJ\n */\ngoog.events.Listenable.prototype.listenOnce;\n\n\n/**\n * Removes an event listener which was added with listen() or listenOnce().\n *\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The event type id.\n * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener Callback\n *     method.\n * @param {boolean=} opt_useCapture Whether to fire in capture phase\n *     (defaults to false).\n * @param {SCOPE=} opt_listenerScope Object in whose scope to call\n *     the listener.\n * @return {boolean} Whether any listener was removed.\n * @template SCOPE,EVENTOBJ\n */\ngoog.events.Listenable.prototype.unlisten;\n\n\n/**\n * Removes an event listener which was added with listen() by the key\n * returned by listen().\n *\n * @param {!goog.events.ListenableKey} key The key returned by\n *     listen() or listenOnce().\n * @return {boolean} Whether any listener was removed.\n */\ngoog.events.Listenable.prototype.unlistenByKey;\n\n\n/**\n * Dispatches an event (or event like object) and calls all listeners\n * listening for events of this type. The type of the event is decided by the\n * type property on the event object.\n *\n * If any of the listeners returns false OR calls preventDefault then this\n * function will return false.  If one of the capture listeners calls\n * stopPropagation, then the bubble listeners won't fire.\n *\n * @param {goog.events.EventLike} e Event object.\n * @return {boolean} If anyone called preventDefault on the event object (or\n *     if any of the listeners returns false) this will also return false.\n */\ngoog.events.Listenable.prototype.dispatchEvent;\n\n\n/**\n * Removes all listeners from this listenable. If type is specified,\n * it will only remove listeners of the particular type. otherwise all\n * registered listeners will be removed.\n *\n * @param {string=} opt_type Type of event to remove, default is to\n *     remove all types.\n * @return {number} Number of listeners removed.\n */\ngoog.events.Listenable.prototype.removeAllListeners;\n\n\n/**\n * Returns the parent of this event target to use for capture/bubble\n * mechanism.\n *\n * NOTE(chrishenry): The name reflects the original implementation of\n * custom event target (`goog.events.EventTarget`). We decided\n * that changing the name is not worth it.\n *\n * @return {goog.events.Listenable} The parent EventTarget or null if\n *     there is no parent.\n */\ngoog.events.Listenable.prototype.getParentEventTarget;\n\n\n/**\n * Fires all registered listeners in this listenable for the given\n * type and capture mode, passing them the given eventObject. This\n * does not perform actual capture/bubble. Only implementors of the\n * interface should be using this.\n *\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The type of the\n *     listeners to fire.\n * @param {boolean} capture The capture mode of the listeners to fire.\n * @param {EVENTOBJ} eventObject The event object to fire.\n * @return {boolean} Whether all listeners succeeded without\n *     attempting to prevent default behavior. If any listener returns\n *     false or called goog.events.Event#preventDefault, this returns\n *     false.\n * @template EVENTOBJ\n */\ngoog.events.Listenable.prototype.fireListeners;\n\n\n/**\n * Gets all listeners in this listenable for the given type and\n * capture mode.\n *\n * @param {string|!goog.events.EventId} type The type of the listeners to fire.\n * @param {boolean} capture The capture mode of the listeners to fire.\n * @return {!Array<!goog.events.ListenableKey>} An array of registered\n *     listeners.\n * @template EVENTOBJ\n */\ngoog.events.Listenable.prototype.getListeners;\n\n\n/**\n * Gets the goog.events.ListenableKey for the event or null if no such\n * listener is in use.\n *\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The name of the event\n *     without the 'on' prefix.\n * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener The\n *     listener function to get.\n * @param {boolean} capture Whether the listener is a capturing listener.\n * @param {SCOPE=} opt_listenerScope Object in whose scope to call the\n *     listener.\n * @return {goog.events.ListenableKey} the found listener or null if not found.\n * @template SCOPE,EVENTOBJ\n */\ngoog.events.Listenable.prototype.getListener;\n\n\n/**\n * Whether there is any active listeners matching the specified\n * signature. If either the type or capture parameters are\n * unspecified, the function will match on the remaining criteria.\n *\n * @param {string|!goog.events.EventId<EVENTOBJ>=} opt_type Event type.\n * @param {boolean=} opt_capture Whether to check for capture or bubble\n *     listeners.\n * @return {boolean} Whether there is any active listeners matching\n *     the requested type and/or capture phase.\n * @template EVENTOBJ\n */\ngoog.events.Listenable.prototype.hasListener;\n\n\n\n/**\n * An interface that describes a single registered listener.\n * @interface\n */\ngoog.events.ListenableKey = function() {};\n\n\n/**\n * Counter used to create a unique key\n * @type {number}\n * @private\n */\ngoog.events.ListenableKey.counter_ = 0;\n\n\n/**\n * Reserves a key to be used for ListenableKey#key field.\n * @return {number} A number to be used to fill ListenableKey#key\n *     field.\n */\ngoog.events.ListenableKey.reserveKey = function() {\n  return ++goog.events.ListenableKey.counter_;\n};\n\n\n/**\n * The source event target.\n * @type {?Object|?goog.events.Listenable}\n */\ngoog.events.ListenableKey.prototype.src;\n\n\n/**\n * The event type the listener is listening to.\n * @type {string}\n */\ngoog.events.ListenableKey.prototype.type;\n\n\n/**\n * The listener function.\n * @type {function(?):?|{handleEvent:function(?):?}|null}\n */\ngoog.events.ListenableKey.prototype.listener;\n\n\n/**\n * Whether the listener works on capture phase.\n * @type {boolean}\n */\ngoog.events.ListenableKey.prototype.capture;\n\n\n/**\n * The 'this' object for the listener function's scope.\n * @type {Object|undefined}\n */\ngoog.events.ListenableKey.prototype.handler;\n\n\n/**\n * A globally unique number to identify the key.\n * @type {number}\n */\ngoog.events.ListenableKey.prototype.key;\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Listener object.\n * @see ../demos/events.html\n */\n\ngoog.provide('goog.events.Listener');\n\ngoog.require('goog.events.ListenableKey');\ngoog.requireType('goog.events.Listenable');\n\n\n\n/**\n * Simple class that stores information about a listener\n * @param {function(?):?} listener Callback function.\n * @param {Function} proxy Wrapper for the listener that patches the event.\n * @param {EventTarget|goog.events.Listenable} src Source object for\n *     the event.\n * @param {string} type Event type.\n * @param {boolean} capture Whether in capture or bubble phase.\n * @param {Object=} opt_handler Object in whose context to execute the callback.\n * @implements {goog.events.ListenableKey}\n * @constructor\n */\ngoog.events.Listener = function(\n    listener, proxy, src, type, capture, opt_handler) {\n  if (goog.events.Listener.ENABLE_MONITORING) {\n    this.creationStack = new Error().stack;\n  }\n\n  /** @override */\n  this.listener = listener;\n\n  /**\n   * A wrapper over the original listener. This is used solely to\n   * handle native browser events (it is used to simulate the capture\n   * phase and to patch the event object).\n   * @type {Function}\n   */\n  this.proxy = proxy;\n\n  /**\n   * Object or node that callback is listening to\n   * @type {EventTarget|goog.events.Listenable}\n   */\n  this.src = src;\n\n  /**\n   * The event type.\n   * @const {string}\n   */\n  this.type = type;\n\n  /**\n   * Whether the listener is being called in the capture or bubble phase\n   * @const {boolean}\n   */\n  this.capture = !!capture;\n\n  /**\n   * Optional object whose context to execute the listener in\n   * @type {Object|undefined}\n   */\n  this.handler = opt_handler;\n\n  /**\n   * The key of the listener.\n   * @const {number}\n   * @override\n   */\n  this.key = goog.events.ListenableKey.reserveKey();\n\n  /**\n   * Whether to remove the listener after it has been called.\n   * @type {boolean}\n   */\n  this.callOnce = false;\n\n  /**\n   * Whether the listener has been removed.\n   * @type {boolean}\n   */\n  this.removed = false;\n};\n\n\n/**\n * @define {boolean} Whether to enable the monitoring of the\n *     goog.events.Listener instances. Switching on the monitoring is only\n *     recommended for debugging because it has a significant impact on\n *     performance and memory usage. If switched off, the monitoring code\n *     compiles down to 0 bytes.\n */\ngoog.events.Listener.ENABLE_MONITORING =\n    goog.define('goog.events.Listener.ENABLE_MONITORING', false);\n\n\n/**\n * If monitoring the goog.events.Listener instances is enabled, stores the\n * creation stack trace of the Disposable instance.\n * @type {string}\n */\ngoog.events.Listener.prototype.creationStack;\n\n\n/**\n * Marks this listener as removed. This also remove references held by\n * this listener object (such as listener and event source).\n */\ngoog.events.Listener.prototype.markAsRemoved = function() {\n  this.removed = true;\n  this.listener = null;\n  this.proxy = null;\n  this.src = null;\n  this.handler = null;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview A map of listeners that provides utility functions to\n * deal with listeners on an event target. Used by\n * `goog.events.EventTarget`.\n *\n * WARNING: Do not use this class from outside goog.events package.\n *\n */\n\ngoog.provide('goog.events.ListenerMap');\n\ngoog.require('goog.array');\ngoog.require('goog.events.Listener');\ngoog.require('goog.object');\ngoog.requireType('goog.events.EventId');\ngoog.requireType('goog.events.Listenable');\ngoog.requireType('goog.events.ListenableKey');\n\n\n\n/**\n * Creates a new listener map.\n * @param {EventTarget|goog.events.Listenable} src The src object.\n * @constructor\n * @final\n */\ngoog.events.ListenerMap = function(src) {\n  /** @type {EventTarget|goog.events.Listenable} */\n  this.src = src;\n\n  /**\n   * Maps of event type to an array of listeners.\n   * @type {!Object<string, !Array<!goog.events.Listener>>}\n   */\n  this.listeners = {};\n\n  /**\n   * The count of types in this map that have registered listeners.\n   * @private {number}\n   */\n  this.typeCount_ = 0;\n};\n\n\n/**\n * @return {number} The count of event types in this map that actually\n *     have registered listeners.\n */\ngoog.events.ListenerMap.prototype.getTypeCount = function() {\n  return this.typeCount_;\n};\n\n\n/**\n * @return {number} Total number of registered listeners.\n */\ngoog.events.ListenerMap.prototype.getListenerCount = function() {\n  var count = 0;\n  for (var type in this.listeners) {\n    count += this.listeners[type].length;\n  }\n  return count;\n};\n\n\n/**\n * Adds an event listener. A listener can only be added once to an\n * object and if it is added again the key for the listener is\n * returned.\n *\n * Note that a one-off listener will not change an existing listener,\n * if any. On the other hand a normal listener will change existing\n * one-off listener to become a normal listener.\n *\n * @param {string|!goog.events.EventId} type The listener event type.\n * @param {!Function} listener This listener callback method.\n * @param {boolean} callOnce Whether the listener is a one-off\n *     listener.\n * @param {boolean=} opt_useCapture The capture mode of the listener.\n * @param {Object=} opt_listenerScope Object in whose scope to call the\n *     listener.\n * @return {!goog.events.ListenableKey} Unique key for the listener.\n */\ngoog.events.ListenerMap.prototype.add = function(\n    type, listener, callOnce, opt_useCapture, opt_listenerScope) {\n  var typeStr = type.toString();\n  var listenerArray = this.listeners[typeStr];\n  if (!listenerArray) {\n    listenerArray = this.listeners[typeStr] = [];\n    this.typeCount_++;\n  }\n\n  var listenerObj;\n  var index = goog.events.ListenerMap.findListenerIndex_(\n      listenerArray, listener, opt_useCapture, opt_listenerScope);\n  if (index > -1) {\n    listenerObj = listenerArray[index];\n    if (!callOnce) {\n      // Ensure that, if there is an existing callOnce listener, it is no\n      // longer a callOnce listener.\n      listenerObj.callOnce = false;\n    }\n  } else {\n    listenerObj = new goog.events.Listener(\n        listener, null, this.src, typeStr, !!opt_useCapture, opt_listenerScope);\n    listenerObj.callOnce = callOnce;\n    listenerArray.push(listenerObj);\n  }\n  return listenerObj;\n};\n\n\n/**\n * Removes a matching listener.\n * @param {string|!goog.events.EventId} type The listener event type.\n * @param {!Function} listener This listener callback method.\n * @param {boolean=} opt_useCapture The capture mode of the listener.\n * @param {Object=} opt_listenerScope Object in whose scope to call the\n *     listener.\n * @return {boolean} Whether any listener was removed.\n */\ngoog.events.ListenerMap.prototype.remove = function(\n    type, listener, opt_useCapture, opt_listenerScope) {\n  var typeStr = type.toString();\n  if (!(typeStr in this.listeners)) {\n    return false;\n  }\n\n  var listenerArray = this.listeners[typeStr];\n  var index = goog.events.ListenerMap.findListenerIndex_(\n      listenerArray, listener, opt_useCapture, opt_listenerScope);\n  if (index > -1) {\n    var listenerObj = listenerArray[index];\n    listenerObj.markAsRemoved();\n    goog.array.removeAt(listenerArray, index);\n    if (listenerArray.length == 0) {\n      delete this.listeners[typeStr];\n      this.typeCount_--;\n    }\n    return true;\n  }\n  return false;\n};\n\n\n/**\n * Removes the given listener object.\n * @param {!goog.events.ListenableKey} listener The listener to remove.\n * @return {boolean} Whether the listener is removed.\n */\ngoog.events.ListenerMap.prototype.removeByKey = function(listener) {\n  var type = listener.type;\n  if (!(type in this.listeners)) {\n    return false;\n  }\n\n  var removed = goog.array.remove(this.listeners[type], listener);\n  if (removed) {\n    /** @type {!goog.events.Listener} */ (listener).markAsRemoved();\n    if (this.listeners[type].length == 0) {\n      delete this.listeners[type];\n      this.typeCount_--;\n    }\n  }\n  return removed;\n};\n\n\n/**\n * Removes all listeners from this map. If opt_type is provided, only\n * listeners that match the given type are removed.\n * @param {string|!goog.events.EventId=} opt_type Type of event to remove.\n * @return {number} Number of listeners removed.\n */\ngoog.events.ListenerMap.prototype.removeAll = function(opt_type) {\n  var typeStr = opt_type && opt_type.toString();\n  var count = 0;\n  for (var type in this.listeners) {\n    if (!typeStr || type == typeStr) {\n      var listenerArray = this.listeners[type];\n      for (var i = 0; i < listenerArray.length; i++) {\n        ++count;\n        listenerArray[i].markAsRemoved();\n      }\n      delete this.listeners[type];\n      this.typeCount_--;\n    }\n  }\n  return count;\n};\n\n\n/**\n * Gets all listeners that match the given type and capture mode. The\n * returned array is a copy (but the listener objects are not).\n * @param {string|!goog.events.EventId} type The type of the listeners\n *     to retrieve.\n * @param {boolean} capture The capture mode of the listeners to retrieve.\n * @return {!Array<!goog.events.ListenableKey>} An array of matching\n *     listeners.\n */\ngoog.events.ListenerMap.prototype.getListeners = function(type, capture) {\n  var listenerArray = this.listeners[type.toString()];\n  var rv = [];\n  if (listenerArray) {\n    for (var i = 0; i < listenerArray.length; ++i) {\n      var listenerObj = listenerArray[i];\n      if (listenerObj.capture == capture) {\n        rv.push(listenerObj);\n      }\n    }\n  }\n  return rv;\n};\n\n\n/**\n * Gets the goog.events.ListenableKey for the event or null if no such\n * listener is in use.\n *\n * @param {string|!goog.events.EventId} type The type of the listener\n *     to retrieve.\n * @param {!Function} listener The listener function to get.\n * @param {boolean} capture Whether the listener is a capturing listener.\n * @param {Object=} opt_listenerScope Object in whose scope to call the\n *     listener.\n * @return {goog.events.ListenableKey} the found listener or null if not found.\n */\ngoog.events.ListenerMap.prototype.getListener = function(\n    type, listener, capture, opt_listenerScope) {\n  var listenerArray = this.listeners[type.toString()];\n  var i = -1;\n  if (listenerArray) {\n    i = goog.events.ListenerMap.findListenerIndex_(\n        listenerArray, listener, capture, opt_listenerScope);\n  }\n  return i > -1 ? listenerArray[i] : null;\n};\n\n\n/**\n * Whether there is a matching listener. If either the type or capture\n * parameters are unspecified, the function will match on the\n * remaining criteria.\n *\n * @param {string|!goog.events.EventId=} opt_type The type of the listener.\n * @param {boolean=} opt_capture The capture mode of the listener.\n * @return {boolean} Whether there is an active listener matching\n *     the requested type and/or capture phase.\n */\ngoog.events.ListenerMap.prototype.hasListener = function(\n    opt_type, opt_capture) {\n  var hasType = (opt_type !== undefined);\n  var typeStr = hasType ? opt_type.toString() : '';\n  var hasCapture = (opt_capture !== undefined);\n\n  return goog.object.some(this.listeners, function(listenerArray, type) {\n    for (var i = 0; i < listenerArray.length; ++i) {\n      if ((!hasType || listenerArray[i].type == typeStr) &&\n          (!hasCapture || listenerArray[i].capture == opt_capture)) {\n        return true;\n      }\n    }\n\n    return false;\n  });\n};\n\n\n/**\n * Finds the index of a matching goog.events.Listener in the given\n * listenerArray.\n * @param {!Array<!goog.events.Listener>} listenerArray Array of listener.\n * @param {!Function} listener The listener function.\n * @param {boolean=} opt_useCapture The capture flag for the listener.\n * @param {Object=} opt_listenerScope The listener scope.\n * @return {number} The index of the matching listener within the\n *     listenerArray.\n * @private\n */\ngoog.events.ListenerMap.findListenerIndex_ = function(\n    listenerArray, listener, opt_useCapture, opt_listenerScope) {\n  for (var i = 0; i < listenerArray.length; ++i) {\n    var listenerObj = listenerArray[i];\n    if (!listenerObj.removed && listenerObj.listener == listener &&\n        listenerObj.capture == !!opt_useCapture &&\n        listenerObj.handler == opt_listenerScope) {\n      return i;\n    }\n  }\n  return -1;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview An event manager for both native browser event\n * targets and custom JavaScript event targets\n * (`goog.events.Listenable`). This provides an abstraction\n * over browsers' event systems.\n *\n * It also provides a simulation of W3C event model's capture phase in\n * Internet Explorer (IE 8 and below). Caveat: the simulation does not\n * interact well with listeners registered directly on the elements\n * (bypassing goog.events) or even with listeners registered via\n * goog.events in a separate JS binary. In these cases, we provide\n * no ordering guarantees.\n *\n * The listeners will receive a \"patched\" event object. Such event object\n * contains normalized values for certain event properties that differs in\n * different browsers.\n *\n * Example usage:\n * <pre>\n * goog.events.listen(myNode, 'click', function(e) { alert('woo') });\n * goog.events.listen(myNode, 'mouseover', mouseHandler, true);\n * goog.events.unlisten(myNode, 'mouseover', mouseHandler, true);\n * goog.events.removeAll(myNode);\n * </pre>\n *\n *                                            in IE and event object patching]\n *\n * @see ../demos/events.html\n * @see ../demos/event-propagation.html\n * @see ../demos/stopevent.html\n */\n\n// IMPLEMENTATION NOTES:\n// goog.events stores an auxiliary data structure on each EventTarget\n// source being listened on. This allows us to take advantage of GC,\n// having the data structure GC'd when the EventTarget is GC'd. This\n// GC behavior is equivalent to using W3C DOM Events directly.\n\ngoog.provide('goog.events');\ngoog.provide('goog.events.CaptureSimulationMode');\ngoog.provide('goog.events.Key');\ngoog.provide('goog.events.ListenableType');\n\ngoog.require('goog.asserts');\ngoog.require('goog.debug.entryPointRegistry');\ngoog.require('goog.events.BrowserEvent');\ngoog.require('goog.events.BrowserFeature');\ngoog.require('goog.events.Listenable');\ngoog.require('goog.events.ListenerMap');\ngoog.requireType('goog.debug.ErrorHandler');\ngoog.requireType('goog.events.EventId');\ngoog.requireType('goog.events.EventLike');\ngoog.requireType('goog.events.EventWrapper');\ngoog.requireType('goog.events.ListenableKey');\ngoog.requireType('goog.events.Listener');\n\n\n/**\n * @typedef {number|goog.events.ListenableKey}\n */\ngoog.events.Key;\n\n\n/**\n * @typedef {EventTarget|goog.events.Listenable}\n */\ngoog.events.ListenableType;\n\n\n/**\n * Property name on a native event target for the listener map\n * associated with the event target.\n * @private @const {string}\n */\ngoog.events.LISTENER_MAP_PROP_ = 'closure_lm_' + ((Math.random() * 1e6) | 0);\n\n\n/**\n * String used to prepend to IE event types.\n * @const\n * @private\n */\ngoog.events.onString_ = 'on';\n\n\n/**\n * Map of computed \"on<eventname>\" strings for IE event types. Caching\n * this removes an extra object allocation in goog.events.listen which\n * improves IE6 performance.\n * @const\n * @dict\n * @private\n */\ngoog.events.onStringMap_ = {};\n\n\n/**\n * @enum {number} Different capture simulation mode for IE8-.\n */\ngoog.events.CaptureSimulationMode = {\n  /**\n   * Does not perform capture simulation. Will asserts in IE8- when you\n   * add capture listeners.\n   */\n  OFF_AND_FAIL: 0,\n\n  /**\n   * Does not perform capture simulation, silently ignore capture\n   * listeners.\n   */\n  OFF_AND_SILENT: 1,\n\n  /**\n   * Performs capture simulation.\n   */\n  ON: 2\n};\n\n\n/**\n * @define {number} The capture simulation mode for IE8-. By default,\n *     this is ON.\n */\ngoog.events.CAPTURE_SIMULATION_MODE =\n    goog.define('goog.events.CAPTURE_SIMULATION_MODE', 2);\n\n\n/**\n * Estimated count of total native listeners.\n * @private {number}\n */\ngoog.events.listenerCountEstimate_ = 0;\n\n\n/**\n * Adds an event listener for a specific event on a native event\n * target (such as a DOM element) or an object that has implemented\n * {@link goog.events.Listenable}. A listener can only be added once\n * to an object and if it is added again the key for the listener is\n * returned. Note that if the existing listener is a one-off listener\n * (registered via listenOnce), it will no longer be a one-off\n * listener after a call to listen().\n *\n * @param {EventTarget|goog.events.Listenable} src The node to listen\n *     to events on.\n * @param {string|Array<string>|\n *     !goog.events.EventId<EVENTOBJ>|!Array<!goog.events.EventId<EVENTOBJ>>}\n *     type Event type or array of event types.\n * @param {function(this:T, EVENTOBJ):?|{handleEvent:function(?):?}|null}\n *     listener Callback method, or an object with a handleEvent function.\n *     WARNING: passing an Object is now softly deprecated.\n * @param {(boolean|!AddEventListenerOptions)=} opt_options\n * @param {T=} opt_handler Element in whose scope to call the listener.\n * @return {goog.events.Key} Unique key for the listener.\n * @template T,EVENTOBJ\n */\ngoog.events.listen = function(src, type, listener, opt_options, opt_handler) {\n  if (opt_options && opt_options.once) {\n    return goog.events.listenOnce(\n        src, type, listener, opt_options, opt_handler);\n  }\n  if (Array.isArray(type)) {\n    for (var i = 0; i < type.length; i++) {\n      goog.events.listen(src, type[i], listener, opt_options, opt_handler);\n    }\n    return null;\n  }\n\n  listener = goog.events.wrapListener(listener);\n  if (goog.events.Listenable.isImplementedBy(src)) {\n    var capture =\n        goog.isObject(opt_options) ? !!opt_options.capture : !!opt_options;\n    return src.listen(\n        /** @type {string|!goog.events.EventId} */ (type), listener, capture,\n        opt_handler);\n  } else {\n    return goog.events.listen_(\n        /** @type {!EventTarget} */ (src), type, listener,\n        /* callOnce */ false, opt_options, opt_handler);\n  }\n};\n\n\n/**\n * Adds an event listener for a specific event on a native event\n * target. A listener can only be added once to an object and if it\n * is added again the key for the listener is returned.\n *\n * Note that a one-off listener will not change an existing listener,\n * if any. On the other hand a normal listener will change existing\n * one-off listener to become a normal listener.\n *\n * @param {EventTarget} src The node to listen to events on.\n * @param {string|?goog.events.EventId<EVENTOBJ>} type Event type.\n * @param {!Function} listener Callback function.\n * @param {boolean} callOnce Whether the listener is a one-off\n *     listener or otherwise.\n * @param {(boolean|!AddEventListenerOptions)=} opt_options\n * @param {Object=} opt_handler Element in whose scope to call the listener.\n * @return {goog.events.ListenableKey} Unique key for the listener.\n * @template EVENTOBJ\n * @private\n */\ngoog.events.listen_ = function(\n    src, type, listener, callOnce, opt_options, opt_handler) {\n  if (!type) {\n    throw new Error('Invalid event type');\n  }\n\n  var capture =\n      goog.isObject(opt_options) ? !!opt_options.capture : !!opt_options;\n  if (capture && !goog.events.BrowserFeature.HAS_W3C_EVENT_SUPPORT) {\n    if (goog.events.CAPTURE_SIMULATION_MODE ==\n        goog.events.CaptureSimulationMode.OFF_AND_FAIL) {\n      goog.asserts.fail('Can not register capture listener in IE8-.');\n      return null;\n    } else if (\n        goog.events.CAPTURE_SIMULATION_MODE ==\n        goog.events.CaptureSimulationMode.OFF_AND_SILENT) {\n      return null;\n    }\n  }\n\n  var listenerMap = goog.events.getListenerMap_(src);\n  if (!listenerMap) {\n    src[goog.events.LISTENER_MAP_PROP_] = listenerMap =\n        new goog.events.ListenerMap(src);\n  }\n\n  var listenerObj = /** @type {goog.events.Listener} */ (\n      listenerMap.add(type, listener, callOnce, capture, opt_handler));\n\n  // If the listenerObj already has a proxy, it has been set up\n  // previously. We simply return.\n  if (listenerObj.proxy) {\n    return listenerObj;\n  }\n\n  var proxy = goog.events.getProxy();\n  listenerObj.proxy = proxy;\n\n  proxy.src = src;\n  proxy.listener = listenerObj;\n\n  // Attach the proxy through the browser's API\n  if (src.addEventListener) {\n    // Don't pass an object as `capture` if the browser doesn't support that.\n    if (!goog.events.BrowserFeature.PASSIVE_EVENTS) {\n      opt_options = capture;\n    }\n    // Don't break tests that expect a boolean.\n    if (opt_options === undefined) opt_options = false;\n    src.addEventListener(type.toString(), proxy, opt_options);\n  } else if (src.attachEvent) {\n    // The else if above used to be an unconditional else. It would call\n    // attachEvent come gws or high water. This would sometimes throw an\n    // exception on IE11, spoiling the day of some callers. The previous\n    // incarnation of this code, from 2007, indicates that it replaced an\n    // earlier still version that caused excess allocations on IE6.\n    src.attachEvent(goog.events.getOnString_(type.toString()), proxy);\n  } else if (src.addListener && src.removeListener) {\n    // In IE, MediaQueryList uses addListener() insteadd of addEventListener. In\n    // Safari, there is no global for the MediaQueryList constructor, so we just\n    // check whether the object \"looks like\" MediaQueryList.\n    goog.asserts.assert(\n        type === 'change', 'MediaQueryList only has a change event');\n    src.addListener(proxy);\n  } else {\n    throw new Error('addEventListener and attachEvent are unavailable.');\n  }\n\n  goog.events.listenerCountEstimate_++;\n  return listenerObj;\n};\n\n\n/**\n * Helper function for returning a proxy function.\n * @return {!Function} A new or reused function object.\n */\ngoog.events.getProxy = function() {\n  var proxyCallbackFunction = goog.events.handleBrowserEvent_;\n  // Use a local var f to prevent one allocation.\n  var f =\n      goog.events.BrowserFeature.HAS_W3C_EVENT_SUPPORT ? function(eventObject) {\n        return proxyCallbackFunction.call(f.src, f.listener, eventObject);\n      } : function(eventObject) {\n        var v = proxyCallbackFunction.call(f.src, f.listener, eventObject);\n        // NOTE(chrishenry): In IE, we hack in a capture phase. However, if\n        // there is inline event handler which tries to prevent default (for\n        // example <a href=\"...\" onclick=\"return false\">...</a>) in a\n        // descendant element, the prevent default will be overridden\n        // by this listener if this listener were to return true. Hence, we\n        // return undefined.\n        if (!v) return v;\n      };\n  return f;\n};\n\n\n/**\n * Adds an event listener for a specific event on a native event\n * target (such as a DOM element) or an object that has implemented\n * {@link goog.events.Listenable}. After the event has fired the event\n * listener is removed from the target.\n *\n * If an existing listener already exists, listenOnce will do\n * nothing. In particular, if the listener was previously registered\n * via listen(), listenOnce() will not turn the listener into a\n * one-off listener. Similarly, if there is already an existing\n * one-off listener, listenOnce does not modify the listeners (it is\n * still a once listener).\n *\n * @param {EventTarget|goog.events.Listenable} src The node to listen\n *     to events on.\n * @param {string|Array<string>|\n *     !goog.events.EventId<EVENTOBJ>|!Array<!goog.events.EventId<EVENTOBJ>>}\n *     type Event type or array of event types.\n * @param {function(this:T, EVENTOBJ):?|{handleEvent:function(?):?}|null}\n *     listener Callback method.\n * @param {(boolean|!AddEventListenerOptions)=} opt_options\n * @param {T=} opt_handler Element in whose scope to call the listener.\n * @return {goog.events.Key} Unique key for the listener.\n * @template T,EVENTOBJ\n */\ngoog.events.listenOnce = function(\n    src, type, listener, opt_options, opt_handler) {\n  if (Array.isArray(type)) {\n    for (var i = 0; i < type.length; i++) {\n      goog.events.listenOnce(src, type[i], listener, opt_options, opt_handler);\n    }\n    return null;\n  }\n\n  listener = goog.events.wrapListener(listener);\n  if (goog.events.Listenable.isImplementedBy(src)) {\n    var capture =\n        goog.isObject(opt_options) ? !!opt_options.capture : !!opt_options;\n    return src.listenOnce(\n        /** @type {string|!goog.events.EventId} */ (type), listener, capture,\n        opt_handler);\n  } else {\n    return goog.events.listen_(\n        /** @type {!EventTarget} */ (src), type, listener,\n        /* callOnce */ true, opt_options, opt_handler);\n  }\n};\n\n\n/**\n * Adds an event listener with a specific event wrapper on a DOM Node or an\n * object that has implemented {@link goog.events.Listenable}. A listener can\n * only be added once to an object.\n *\n * @param {EventTarget|goog.events.Listenable} src The target to\n *     listen to events on.\n * @param {goog.events.EventWrapper} wrapper Event wrapper to use.\n * @param {function(this:T, ?):?|{handleEvent:function(?):?}|null} listener\n *     Callback method, or an object with a handleEvent function.\n * @param {boolean=} opt_capt Whether to fire in capture phase (defaults to\n *     false).\n * @param {T=} opt_handler Element in whose scope to call the listener.\n * @template T\n */\ngoog.events.listenWithWrapper = function(\n    src, wrapper, listener, opt_capt, opt_handler) {\n  wrapper.listen(src, listener, opt_capt, opt_handler);\n};\n\n\n/**\n * Removes an event listener which was added with listen().\n *\n * @param {EventTarget|goog.events.Listenable} src The target to stop\n *     listening to events on.\n * @param {string|Array<string>|\n *     !goog.events.EventId<EVENTOBJ>|!Array<!goog.events.EventId<EVENTOBJ>>}\n *     type Event type or array of event types to unlisten to.\n * @param {function(?):?|{handleEvent:function(?):?}|null} listener The\n *     listener function to remove.\n * @param {(boolean|!EventListenerOptions)=} opt_options\n *     whether the listener is fired during the capture or bubble phase of the\n *     event.\n * @param {Object=} opt_handler Element in whose scope to call the listener.\n * @return {?boolean} indicating whether the listener was there to remove.\n * @template EVENTOBJ\n */\ngoog.events.unlisten = function(src, type, listener, opt_options, opt_handler) {\n  if (Array.isArray(type)) {\n    for (var i = 0; i < type.length; i++) {\n      goog.events.unlisten(src, type[i], listener, opt_options, opt_handler);\n    }\n    return null;\n  }\n  var capture =\n      goog.isObject(opt_options) ? !!opt_options.capture : !!opt_options;\n\n  listener = goog.events.wrapListener(listener);\n  if (goog.events.Listenable.isImplementedBy(src)) {\n    return src.unlisten(\n        /** @type {string|!goog.events.EventId} */ (type), listener, capture,\n        opt_handler);\n  }\n\n  if (!src) {\n    // TODO(chrishenry): We should tighten the API to only accept\n    // non-null objects, or add an assertion here.\n    return false;\n  }\n\n  var listenerMap = goog.events.getListenerMap_(\n      /** @type {!EventTarget} */ (src));\n  if (listenerMap) {\n    var listenerObj = listenerMap.getListener(\n        /** @type {string|!goog.events.EventId} */ (type), listener, capture,\n        opt_handler);\n    if (listenerObj) {\n      return goog.events.unlistenByKey(listenerObj);\n    }\n  }\n\n  return false;\n};\n\n\n/**\n * Removes an event listener which was added with listen() by the key\n * returned by listen().\n *\n * @param {goog.events.Key} key The key returned by listen() for this\n *     event listener.\n * @return {boolean} indicating whether the listener was there to remove.\n */\ngoog.events.unlistenByKey = function(key) {\n  // TODO(chrishenry): Remove this check when tests that rely on this\n  // are fixed.\n  if (typeof key === 'number') {\n    return false;\n  }\n\n  var listener = key;\n  if (!listener || listener.removed) {\n    return false;\n  }\n\n  var src = listener.src;\n  if (goog.events.Listenable.isImplementedBy(src)) {\n    return /** @type {!goog.events.Listenable} */ (src).unlistenByKey(listener);\n  }\n\n  var type = listener.type;\n  var proxy = listener.proxy;\n  if (src.removeEventListener) {\n    src.removeEventListener(type, proxy, listener.capture);\n  } else if (src.detachEvent) {\n    src.detachEvent(goog.events.getOnString_(type), proxy);\n  } else if (src.addListener && src.removeListener) {\n    src.removeListener(proxy);\n  }\n  goog.events.listenerCountEstimate_--;\n\n  var listenerMap = goog.events.getListenerMap_(\n      /** @type {!EventTarget} */ (src));\n  // TODO(chrishenry): Try to remove this conditional and execute the\n  // first branch always. This should be safe.\n  if (listenerMap) {\n    listenerMap.removeByKey(listener);\n    if (listenerMap.getTypeCount() == 0) {\n      // Null the src, just because this is simple to do (and useful\n      // for IE <= 7).\n      listenerMap.src = null;\n      // We don't use delete here because IE does not allow delete\n      // on a window object.\n      src[goog.events.LISTENER_MAP_PROP_] = null;\n    }\n  } else {\n    /** @type {!goog.events.Listener} */ (listener).markAsRemoved();\n  }\n\n  return true;\n};\n\n\n/**\n * Removes an event listener which was added with listenWithWrapper().\n *\n * @param {EventTarget|goog.events.Listenable} src The target to stop\n *     listening to events on.\n * @param {goog.events.EventWrapper} wrapper Event wrapper to use.\n * @param {function(?):?|{handleEvent:function(?):?}|null} listener The\n *     listener function to remove.\n * @param {boolean=} opt_capt In DOM-compliant browsers, this determines\n *     whether the listener is fired during the capture or bubble phase of the\n *     event.\n * @param {Object=} opt_handler Element in whose scope to call the listener.\n */\ngoog.events.unlistenWithWrapper = function(\n    src, wrapper, listener, opt_capt, opt_handler) {\n  wrapper.unlisten(src, listener, opt_capt, opt_handler);\n};\n\n\n/**\n * Removes all listeners from an object. You can also optionally\n * remove listeners of a particular type.\n *\n * @param {Object|undefined} obj Object to remove listeners from. Must be an\n *     EventTarget or a goog.events.Listenable.\n * @param {string|!goog.events.EventId=} opt_type Type of event to remove.\n *     Default is all types.\n * @return {number} Number of listeners removed.\n */\ngoog.events.removeAll = function(obj, opt_type) {\n  // TODO(chrishenry): Change the type of obj to\n  // (!EventTarget|!goog.events.Listenable).\n\n  if (!obj) {\n    return 0;\n  }\n\n  if (goog.events.Listenable.isImplementedBy(obj)) {\n    return /** @type {?} */ (obj).removeAllListeners(opt_type);\n  }\n\n  var listenerMap = goog.events.getListenerMap_(\n      /** @type {!EventTarget} */ (obj));\n  if (!listenerMap) {\n    return 0;\n  }\n\n  var count = 0;\n  var typeStr = opt_type && opt_type.toString();\n  for (var type in listenerMap.listeners) {\n    if (!typeStr || type == typeStr) {\n      // Clone so that we don't need to worry about unlistenByKey\n      // changing the content of the ListenerMap.\n      var listeners = listenerMap.listeners[type].concat();\n      for (var i = 0; i < listeners.length; ++i) {\n        if (goog.events.unlistenByKey(listeners[i])) {\n          ++count;\n        }\n      }\n    }\n  }\n  return count;\n};\n\n\n/**\n * Gets the listeners for a given object, type and capture phase.\n *\n * @param {Object} obj Object to get listeners for.\n * @param {string|!goog.events.EventId} type Event type.\n * @param {boolean} capture Capture phase?.\n * @return {!Array<!goog.events.Listener>} Array of listener objects.\n */\ngoog.events.getListeners = function(obj, type, capture) {\n  if (goog.events.Listenable.isImplementedBy(obj)) {\n    return /** @type {!goog.events.Listenable} */ (obj).getListeners(\n        type, capture);\n  } else {\n    if (!obj) {\n      // TODO(chrishenry): We should tighten the API to accept\n      // !EventTarget|goog.events.Listenable, and add an assertion here.\n      return [];\n    }\n\n    var listenerMap = goog.events.getListenerMap_(\n        /** @type {!EventTarget} */ (obj));\n    return listenerMap ? listenerMap.getListeners(type, capture) : [];\n  }\n};\n\n\n/**\n * Gets the goog.events.Listener for the event or null if no such listener is\n * in use.\n *\n * @param {EventTarget|goog.events.Listenable} src The target from\n *     which to get listeners.\n * @param {?string|!goog.events.EventId<EVENTOBJ>} type The type of the event.\n * @param {function(EVENTOBJ):?|{handleEvent:function(?):?}|null} listener The\n *     listener function to get.\n * @param {boolean=} opt_capt In DOM-compliant browsers, this determines\n *                            whether the listener is fired during the\n *                            capture or bubble phase of the event.\n * @param {Object=} opt_handler Element in whose scope to call the listener.\n * @return {goog.events.ListenableKey} the found listener or null if not found.\n * @template EVENTOBJ\n */\ngoog.events.getListener = function(src, type, listener, opt_capt, opt_handler) {\n  // TODO(chrishenry): Change type from ?string to string, or add assertion.\n  type = /** @type {string} */ (type);\n  listener = goog.events.wrapListener(listener);\n  var capture = !!opt_capt;\n  if (goog.events.Listenable.isImplementedBy(src)) {\n    return src.getListener(type, listener, capture, opt_handler);\n  }\n\n  if (!src) {\n    // TODO(chrishenry): We should tighten the API to only accept\n    // non-null objects, or add an assertion here.\n    return null;\n  }\n\n  var listenerMap = goog.events.getListenerMap_(\n      /** @type {!EventTarget} */ (src));\n  if (listenerMap) {\n    return listenerMap.getListener(type, listener, capture, opt_handler);\n  }\n  return null;\n};\n\n\n/**\n * Returns whether an event target has any active listeners matching the\n * specified signature. If either the type or capture parameters are\n * unspecified, the function will match on the remaining criteria.\n *\n * @param {EventTarget|goog.events.Listenable} obj Target to get\n *     listeners for.\n * @param {string|!goog.events.EventId=} opt_type Event type.\n * @param {boolean=} opt_capture Whether to check for capture or bubble-phase\n *     listeners.\n * @return {boolean} Whether an event target has one or more listeners matching\n *     the requested type and/or capture phase.\n */\ngoog.events.hasListener = function(obj, opt_type, opt_capture) {\n  if (goog.events.Listenable.isImplementedBy(obj)) {\n    return obj.hasListener(opt_type, opt_capture);\n  }\n\n  var listenerMap = goog.events.getListenerMap_(\n      /** @type {!EventTarget} */ (obj));\n  return !!listenerMap && listenerMap.hasListener(opt_type, opt_capture);\n};\n\n\n/**\n * Provides a nice string showing the normalized event objects public members\n * @param {Object} e Event Object.\n * @return {string} String of the public members of the normalized event object.\n */\ngoog.events.expose = function(e) {\n  var str = [];\n  for (var key in e) {\n    if (e[key] && e[key].id) {\n      str.push(key + ' = ' + e[key] + ' (' + e[key].id + ')');\n    } else {\n      str.push(key + ' = ' + e[key]);\n    }\n  }\n  return str.join('\\n');\n};\n\n\n/**\n * Returns a string with on prepended to the specified type. This is used for IE\n * which expects \"on\" to be prepended. This function caches the string in order\n * to avoid extra allocations in steady state.\n * @param {string} type Event type.\n * @return {string} The type string with 'on' prepended.\n * @private\n */\ngoog.events.getOnString_ = function(type) {\n  if (type in goog.events.onStringMap_) {\n    return goog.events.onStringMap_[type];\n  }\n  return goog.events.onStringMap_[type] = goog.events.onString_ + type;\n};\n\n\n/**\n * Fires an object's listeners of a particular type and phase\n *\n * @param {Object} obj Object whose listeners to call.\n * @param {string|!goog.events.EventId} type Event type.\n * @param {boolean} capture Which event phase.\n * @param {Object} eventObject Event object to be passed to listener.\n * @return {boolean} True if all listeners returned true else false.\n */\ngoog.events.fireListeners = function(obj, type, capture, eventObject) {\n  if (goog.events.Listenable.isImplementedBy(obj)) {\n    return /** @type {!goog.events.Listenable} */ (obj).fireListeners(\n        type, capture, eventObject);\n  }\n\n  return goog.events.fireListeners_(obj, type, capture, eventObject);\n};\n\n\n/**\n * Fires an object's listeners of a particular type and phase.\n * @param {Object} obj Object whose listeners to call.\n * @param {string|!goog.events.EventId} type Event type.\n * @param {boolean} capture Which event phase.\n * @param {Object} eventObject Event object to be passed to listener.\n * @return {boolean} True if all listeners returned true else false.\n * @private\n */\ngoog.events.fireListeners_ = function(obj, type, capture, eventObject) {\n  /** @type {boolean} */\n  var retval = true;\n\n  var listenerMap = goog.events.getListenerMap_(\n      /** @type {EventTarget} */ (obj));\n  if (listenerMap) {\n    // TODO(chrishenry): Original code avoids array creation when there\n    // is no listener, so we do the same. If this optimization turns\n    // out to be not required, we can replace this with\n    // listenerMap.getListeners(type, capture) instead, which is simpler.\n    var listenerArray = listenerMap.listeners[type.toString()];\n    if (listenerArray) {\n      listenerArray = listenerArray.concat();\n      for (var i = 0; i < listenerArray.length; i++) {\n        var listener = listenerArray[i];\n        // We might not have a listener if the listener was removed.\n        if (listener && listener.capture == capture && !listener.removed) {\n          var result = goog.events.fireListener(listener, eventObject);\n          retval = retval && (result !== false);\n        }\n      }\n    }\n  }\n  return retval;\n};\n\n\n/**\n * Fires a listener with a set of arguments\n *\n * @param {goog.events.Listener} listener The listener object to call.\n * @param {Object} eventObject The event object to pass to the listener.\n * @return {*} Result of listener.\n */\ngoog.events.fireListener = function(listener, eventObject) {\n  var listenerFn = listener.listener;\n  var listenerHandler = listener.handler || listener.src;\n\n  if (listener.callOnce) {\n    goog.events.unlistenByKey(listener);\n  }\n  return listenerFn.call(listenerHandler, eventObject);\n};\n\n\n/**\n * Gets the total number of listeners currently in the system.\n * @return {number} Number of listeners.\n * @deprecated This returns estimated count, now that Closure no longer\n * stores a central listener registry. We still return an estimation\n * to keep existing listener-related tests passing. In the near future,\n * this function will be removed.\n */\ngoog.events.getTotalListenerCount = function() {\n  return goog.events.listenerCountEstimate_;\n};\n\n\n/**\n * Dispatches an event (or event like object) and calls all listeners\n * listening for events of this type. The type of the event is decided by the\n * type property on the event object.\n *\n * If any of the listeners returns false OR calls preventDefault then this\n * function will return false.  If one of the capture listeners calls\n * stopPropagation, then the bubble listeners won't fire.\n *\n * @param {goog.events.Listenable} src The event target.\n * @param {goog.events.EventLike} e Event object.\n * @return {boolean} If anyone called preventDefault on the event object (or\n *     if any of the handlers returns false) this will also return false.\n *     If there are no handlers, or if all handlers return true, this returns\n *     true.\n */\ngoog.events.dispatchEvent = function(src, e) {\n  goog.asserts.assert(\n      goog.events.Listenable.isImplementedBy(src),\n      'Can not use goog.events.dispatchEvent with ' +\n          'non-goog.events.Listenable instance.');\n  return src.dispatchEvent(e);\n};\n\n\n/**\n * Installs exception protection for the browser event entry point using the\n * given error handler.\n *\n * @param {goog.debug.ErrorHandler} errorHandler Error handler with which to\n *     protect the entry point.\n */\ngoog.events.protectBrowserEventEntryPoint = function(errorHandler) {\n  goog.events.handleBrowserEvent_ =\n      errorHandler.protectEntryPoint(goog.events.handleBrowserEvent_);\n};\n\n\n/**\n * Handles an event and dispatches it to the correct listeners. This\n * function is a proxy for the real listener the user specified.\n *\n * @param {goog.events.Listener} listener The listener object.\n * @param {Event=} opt_evt Optional event object that gets passed in via the\n *     native event handlers.\n * @return {*} Result of the event handler.\n * @this {EventTarget} The object or Element that fired the event.\n * @private\n */\ngoog.events.handleBrowserEvent_ = function(listener, opt_evt) {\n  if (listener.removed) {\n    return true;\n  }\n\n  // Synthesize event propagation if the browser does not support W3C\n  // event model.\n  if (!goog.events.BrowserFeature.HAS_W3C_EVENT_SUPPORT) {\n    var ieEvent = opt_evt ||\n        /** @type {Event} */ (goog.getObjectByName('window.event'));\n    var evt = new goog.events.BrowserEvent(ieEvent, this);\n    /** @type {*} */\n    var retval = true;\n\n    if (goog.events.CAPTURE_SIMULATION_MODE ==\n        goog.events.CaptureSimulationMode.ON) {\n      // If we have not marked this event yet, we should perform capture\n      // simulation.\n      if (!goog.events.isMarkedIeEvent_(ieEvent)) {\n        goog.events.markIeEvent_(ieEvent);\n\n        var ancestors = [];\n        for (var parent = evt.currentTarget; parent;\n             parent = parent.parentNode) {\n          ancestors.push(parent);\n        }\n\n        // Fire capture listeners.\n        var type = listener.type;\n        for (var i = ancestors.length - 1;\n             !evt.hasPropagationStopped() && i >= 0; i--) {\n          evt.currentTarget = ancestors[i];\n          var result =\n              goog.events.fireListeners_(ancestors[i], type, true, evt);\n          retval = retval && result;\n        }\n\n        // Fire bubble listeners.\n        //\n        // We can technically rely on IE to perform bubble event\n        // propagation. However, it turns out that IE fires events in\n        // opposite order of attachEvent registration, which broke\n        // some code and tests that rely on the order. (While W3C DOM\n        // Level 2 Events TR leaves the event ordering unspecified,\n        // modern browsers and W3C DOM Level 3 Events Working Draft\n        // actually specify the order as the registration order.)\n        for (var i = 0; !evt.hasPropagationStopped() && i < ancestors.length;\n             i++) {\n          evt.currentTarget = ancestors[i];\n          var result =\n              goog.events.fireListeners_(ancestors[i], type, false, evt);\n          retval = retval && result;\n        }\n      }\n    } else {\n      retval = goog.events.fireListener(listener, evt);\n    }\n    return retval;\n  }\n\n  // Otherwise, simply fire the listener.\n  return goog.events.fireListener(\n      listener, new goog.events.BrowserEvent(opt_evt, this));\n};\n\n\n/**\n * This is used to mark the IE event object so we do not do the Closure pass\n * twice for a bubbling event.\n * @param {Event} e The IE browser event.\n * @private\n */\ngoog.events.markIeEvent_ = function(e) {\n  // Only the keyCode and the returnValue can be changed. We use keyCode for\n  // non keyboard events.\n  // event.returnValue is a bit more tricky. It is undefined by default. A\n  // boolean false prevents the default action. In a window.onbeforeunload and\n  // the returnValue is non undefined it will be alerted. However, we will only\n  // modify the returnValue for keyboard events. We can get a problem if non\n  // closure events sets the keyCode or the returnValue\n\n  var useReturnValue = false;\n\n  if (e.keyCode == 0) {\n    // We cannot change the keyCode in case that srcElement is input[type=file].\n    // We could test that that is the case but that would allocate 3 objects.\n    // If we use try/catch we will only allocate extra objects in the case of a\n    // failure.\n\n    try {\n      e.keyCode = -1;\n      return;\n    } catch (ex) {\n      useReturnValue = true;\n    }\n  }\n\n  if (useReturnValue ||\n      /** @type {boolean|undefined} */ (e.returnValue) == undefined) {\n    e.returnValue = true;\n  }\n};\n\n\n/**\n * This is used to check if an IE event has already been handled by the Closure\n * system so we do not do the Closure pass twice for a bubbling event.\n * @param {Event} e  The IE browser event.\n * @return {boolean} True if the event object has been marked.\n * @private\n */\ngoog.events.isMarkedIeEvent_ = function(e) {\n  return e.keyCode < 0 || e.returnValue != undefined;\n};\n\n\n/**\n * Counter to create unique event ids.\n * @private {number}\n */\ngoog.events.uniqueIdCounter_ = 0;\n\n\n/**\n * Creates a unique event id.\n *\n * @param {string} identifier The identifier.\n * @return {string} A unique identifier.\n * @idGenerator {unique}\n */\ngoog.events.getUniqueId = function(identifier) {\n  return identifier + '_' + goog.events.uniqueIdCounter_++;\n};\n\n\n/**\n * @param {EventTarget} src The source object.\n * @return {goog.events.ListenerMap} A listener map for the given\n *     source object, or null if none exists.\n * @private\n */\ngoog.events.getListenerMap_ = function(src) {\n  var listenerMap = src[goog.events.LISTENER_MAP_PROP_];\n  // IE serializes the property as well (e.g. when serializing outer\n  // HTML). So we must check that the value is of the correct type.\n  return listenerMap instanceof goog.events.ListenerMap ? listenerMap : null;\n};\n\n\n/**\n * Expando property for listener function wrapper for Object with\n * handleEvent.\n * @private @const {string}\n */\ngoog.events.LISTENER_WRAPPER_PROP_ =\n    '__closure_events_fn_' + ((Math.random() * 1e9) >>> 0);\n\n\n/**\n * @param {Object|Function} listener The listener function or an\n *     object that contains handleEvent method.\n * @return {!Function} Either the original function or a function that\n *     calls obj.handleEvent. If the same listener is passed to this\n *     function more than once, the same function is guaranteed to be\n *     returned.\n */\ngoog.events.wrapListener = function(listener) {\n  goog.asserts.assert(listener, 'Listener can not be null.');\n\n  if (goog.isFunction(listener)) {\n    return listener;\n  }\n\n  goog.asserts.assert(\n      listener.handleEvent, 'An object listener must have handleEvent method.');\n  if (!listener[goog.events.LISTENER_WRAPPER_PROP_]) {\n    listener[goog.events.LISTENER_WRAPPER_PROP_] = function(e) {\n      return /** @type {?} */ (listener).handleEvent(e);\n    };\n  }\n  return listener[goog.events.LISTENER_WRAPPER_PROP_];\n};\n\n\n// Register the browser event handler as an entry point, so that\n// it can be monitored for exception handling, etc.\ngoog.debug.entryPointRegistry.register(\n    /**\n     * @param {function(!Function): !Function} transformer The transforming\n     *     function.\n     */\n    function(transformer) {\n      goog.events.handleBrowserEvent_ =\n          transformer(goog.events.handleBrowserEvent_);\n    });\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview A disposable implementation of a custom\n * listenable/event target. See also: documentation for\n * `goog.events.Listenable`.\n *\n * @see ../demos/eventtarget.html\n * @see goog.events.Listenable\n */\n\ngoog.provide('goog.events.EventTarget');\n\ngoog.require('goog.Disposable');\ngoog.require('goog.asserts');\ngoog.require('goog.events');\ngoog.require('goog.events.Event');\ngoog.require('goog.events.Listenable');\ngoog.require('goog.events.ListenerMap');\ngoog.require('goog.object');\ngoog.requireType('goog.events.EventId');\n\n\n\n/**\n * An implementation of `goog.events.Listenable` with full W3C\n * EventTarget-like support (capture/bubble mechanism, stopping event\n * propagation, preventing default actions).\n *\n * You may subclass this class to turn your class into a Listenable.\n *\n * Unless propagation is stopped, an event dispatched by an\n * EventTarget will bubble to the parent returned by\n * `getParentEventTarget`. To set the parent, call\n * `setParentEventTarget`. Subclasses that don't support\n * changing the parent can override the setter to throw an error.\n *\n * Example usage:\n * <pre>\n *   var source = new goog.events.EventTarget();\n *   function handleEvent(e) {\n *     alert('Type: ' + e.type + '; Target: ' + e.target);\n *   }\n *   source.listen('foo', handleEvent);\n *   // Or: goog.events.listen(source, 'foo', handleEvent);\n *   ...\n *   source.dispatchEvent('foo');  // will call handleEvent\n *   ...\n *   source.unlisten('foo', handleEvent);\n *   // Or: goog.events.unlisten(source, 'foo', handleEvent);\n * </pre>\n *\n * @constructor\n * @extends {goog.Disposable}\n * @implements {goog.events.Listenable}\n */\ngoog.events.EventTarget = function() {\n  goog.Disposable.call(this);\n\n  /**\n   * Maps of event type to an array of listeners.\n   * @private {!goog.events.ListenerMap}\n   */\n  this.eventTargetListeners_ = new goog.events.ListenerMap(this);\n\n  /**\n   * The object to use for event.target. Useful when mixing in an\n   * EventTarget to another object.\n   * @private {!Object}\n   */\n  this.actualEventTarget_ = this;\n\n  /**\n   * Parent event target, used during event bubbling.\n   *\n   * TODO(chrishenry): Change this to goog.events.Listenable. This\n   * currently breaks people who expect getParentEventTarget to return\n   * goog.events.EventTarget.\n   *\n   * @private {?goog.events.EventTarget}\n   */\n  this.parentEventTarget_ = null;\n};\ngoog.inherits(goog.events.EventTarget, goog.Disposable);\ngoog.events.Listenable.addImplementation(goog.events.EventTarget);\n\n\n/**\n * An artificial cap on the number of ancestors you can have. This is mainly\n * for loop detection.\n * @const {number}\n * @private\n */\ngoog.events.EventTarget.MAX_ANCESTORS_ = 1000;\n\n\n/**\n * Returns the parent of this event target to use for bubbling.\n *\n * @return {goog.events.EventTarget} The parent EventTarget or null if\n *     there is no parent.\n * @override\n */\ngoog.events.EventTarget.prototype.getParentEventTarget = function() {\n  return this.parentEventTarget_;\n};\n\n\n/**\n * Sets the parent of this event target to use for capture/bubble\n * mechanism.\n * @param {goog.events.EventTarget} parent Parent listenable (null if none).\n */\ngoog.events.EventTarget.prototype.setParentEventTarget = function(parent) {\n  this.parentEventTarget_ = parent;\n};\n\n\n/**\n * Adds an event listener to the event target. The same handler can only be\n * added once per the type. Even if you add the same handler multiple times\n * using the same type then it will only be called once when the event is\n * dispatched.\n *\n * @param {string|!goog.events.EventId} type The type of the event to listen for\n * @param {function(?):?|{handleEvent:function(?):?}|null} handler The function\n *     to handle the event. The handler can also be an object that implements\n *     the handleEvent method which takes the event object as argument.\n * @param {boolean=} opt_capture In DOM-compliant browsers, this determines\n *     whether the listener is fired during the capture or bubble phase\n *     of the event.\n * @param {Object=} opt_handlerScope Object in whose scope to call\n *     the listener.\n * @deprecated Use `#listen` instead, when possible. Otherwise, use\n *     `goog.events.listen` if you are passing Object\n *     (instead of Function) as handler.\n */\ngoog.events.EventTarget.prototype.addEventListener = function(\n    type, handler, opt_capture, opt_handlerScope) {\n  goog.events.listen(this, type, handler, opt_capture, opt_handlerScope);\n};\n\n\n/**\n * Removes an event listener from the event target. The handler must be the\n * same object as the one added. If the handler has not been added then\n * nothing is done.\n *\n * @param {string} type The type of the event to listen for.\n * @param {function(?):?|{handleEvent:function(?):?}|null} handler The function\n *     to handle the event. The handler can also be an object that implements\n *     the handleEvent method which takes the event object as argument.\n * @param {boolean=} opt_capture In DOM-compliant browsers, this determines\n *     whether the listener is fired during the capture or bubble phase\n *     of the event.\n * @param {Object=} opt_handlerScope Object in whose scope to call\n *     the listener.\n * @deprecated Use `#unlisten` instead, when possible. Otherwise, use\n *     `goog.events.unlisten` if you are passing Object\n *     (instead of Function) as handler.\n */\ngoog.events.EventTarget.prototype.removeEventListener = function(\n    type, handler, opt_capture, opt_handlerScope) {\n  goog.events.unlisten(this, type, handler, opt_capture, opt_handlerScope);\n};\n\n\n/**\n * @param {?goog.events.EventLike} e Event object.\n * @return {boolean} If anyone called preventDefault on the event object (or\n *     if any of the listeners returns false) this will also return false.\n * @override\n */\ngoog.events.EventTarget.prototype.dispatchEvent = function(e) {\n  this.assertInitialized_();\n\n  var ancestorsTree, ancestor = this.getParentEventTarget();\n  if (ancestor) {\n    ancestorsTree = [];\n    var ancestorCount = 1;\n    for (; ancestor; ancestor = ancestor.getParentEventTarget()) {\n      ancestorsTree.push(ancestor);\n      goog.asserts.assert(\n          (++ancestorCount < goog.events.EventTarget.MAX_ANCESTORS_),\n          'infinite loop');\n    }\n  }\n\n  return goog.events.EventTarget.dispatchEventInternal_(\n      this.actualEventTarget_, e, ancestorsTree);\n};\n\n\n/**\n * Removes listeners from this object.  Classes that extend EventTarget may\n * need to override this method in order to remove references to DOM Elements\n * and additional listeners.\n * @override\n * @protected\n */\ngoog.events.EventTarget.prototype.disposeInternal = function() {\n  goog.events.EventTarget.superClass_.disposeInternal.call(this);\n\n  this.removeAllListeners();\n  this.parentEventTarget_ = null;\n};\n\n\n/**\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The event type id.\n * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener Callback\n *     method.\n * @param {boolean=} opt_useCapture Whether to fire in capture phase\n *     (defaults to false).\n * @param {SCOPE=} opt_listenerScope Object in whose scope to call the\n *     listener.\n * @return {!goog.events.ListenableKey} Unique key for the listener.\n * @template SCOPE,EVENTOBJ\n * @override\n */\ngoog.events.EventTarget.prototype.listen = function(\n    type, listener, opt_useCapture, opt_listenerScope) {\n  this.assertInitialized_();\n  return this.eventTargetListeners_.add(\n      String(type), listener, false /* callOnce */, opt_useCapture,\n      opt_listenerScope);\n};\n\n\n/**\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The event type id.\n * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener Callback\n *     method.\n * @param {boolean=} opt_useCapture Whether to fire in capture phase\n *     (defaults to false).\n * @param {SCOPE=} opt_listenerScope Object in whose scope to call the\n *     listener.\n * @return {!goog.events.ListenableKey} Unique key for the listener.\n * @template SCOPE,EVENTOBJ\n * @override\n */\ngoog.events.EventTarget.prototype.listenOnce = function(\n    type, listener, opt_useCapture, opt_listenerScope) {\n  return this.eventTargetListeners_.add(\n      String(type), listener, true /* callOnce */, opt_useCapture,\n      opt_listenerScope);\n};\n\n\n/**\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The event type id.\n * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener Callback\n *     method.\n * @param {boolean=} opt_useCapture Whether to fire in capture phase\n *     (defaults to false).\n * @param {SCOPE=} opt_listenerScope Object in whose scope to call\n *     the listener.\n * @return {boolean} Whether any listener was removed.\n * @template SCOPE,EVENTOBJ\n * @override\n */\ngoog.events.EventTarget.prototype.unlisten = function(\n    type, listener, opt_useCapture, opt_listenerScope) {\n  return this.eventTargetListeners_.remove(\n      String(type), listener, opt_useCapture, opt_listenerScope);\n};\n\n\n/**\n * @param {!goog.events.ListenableKey} key The key returned by\n *     listen() or listenOnce().\n * @return {boolean} Whether any listener was removed.\n * @override\n */\ngoog.events.EventTarget.prototype.unlistenByKey = function(key) {\n  return this.eventTargetListeners_.removeByKey(key);\n};\n\n\n/**\n * @param {string=} opt_type Type of event to remove, default is to\n *     remove all types.\n * @return {number} Number of listeners removed.\n * @override\n */\ngoog.events.EventTarget.prototype.removeAllListeners = function(opt_type) {\n  // TODO(chrishenry): Previously, removeAllListeners can be called on\n  // uninitialized EventTarget, so we preserve that behavior. We\n  // should remove this when usages that rely on that fact are purged.\n  if (!this.eventTargetListeners_) {\n    return 0;\n  }\n  return this.eventTargetListeners_.removeAll(opt_type);\n};\n\n\n/**\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The type of the\n *     listeners to fire.\n * @param {boolean} capture The capture mode of the listeners to fire.\n * @param {EVENTOBJ} eventObject The event object to fire.\n * @return {boolean} Whether all listeners succeeded without\n *     attempting to prevent default behavior. If any listener returns\n *     false or called goog.events.Event#preventDefault, this returns\n *     false.\n * @template EVENTOBJ\n * @override\n */\ngoog.events.EventTarget.prototype.fireListeners = function(\n    type, capture, eventObject) {\n  // TODO(chrishenry): Original code avoids array creation when there\n  // is no listener, so we do the same. If this optimization turns\n  // out to be not required, we can replace this with\n  // getListeners(type, capture) instead, which is simpler.\n  var listenerArray = this.eventTargetListeners_.listeners[String(type)];\n  if (!listenerArray) {\n    return true;\n  }\n  listenerArray = listenerArray.concat();\n\n  var rv = true;\n  for (var i = 0; i < listenerArray.length; ++i) {\n    var listener = listenerArray[i];\n    // We might not have a listener if the listener was removed.\n    if (listener && !listener.removed && listener.capture == capture) {\n      var listenerFn = listener.listener;\n      var listenerHandler = listener.handler || listener.src;\n\n      if (listener.callOnce) {\n        this.unlistenByKey(listener);\n      }\n      rv = listenerFn.call(listenerHandler, eventObject) !== false && rv;\n    }\n  }\n\n  return rv && !eventObject.defaultPrevented;\n};\n\n\n/**\n * @param {string|!goog.events.EventId} type The type of the listeners to fire.\n * @param {boolean} capture The capture mode of the listeners to fire.\n * @return {!Array<!goog.events.ListenableKey>} An array of registered\n *     listeners.\n * @template EVENTOBJ\n * @override\n */\ngoog.events.EventTarget.prototype.getListeners = function(type, capture) {\n  return this.eventTargetListeners_.getListeners(String(type), capture);\n};\n\n\n/**\n * @param {string|!goog.events.EventId<EVENTOBJ>} type The name of the event\n *     without the 'on' prefix.\n * @param {function(this:SCOPE, EVENTOBJ):(boolean|undefined)} listener The\n *     listener function to get.\n * @param {boolean} capture Whether the listener is a capturing listener.\n * @param {SCOPE=} opt_listenerScope Object in whose scope to call the\n *     listener.\n * @return {?goog.events.ListenableKey} the found listener or null if not found.\n * @template SCOPE,EVENTOBJ\n * @override\n */\ngoog.events.EventTarget.prototype.getListener = function(\n    type, listener, capture, opt_listenerScope) {\n  return this.eventTargetListeners_.getListener(\n      String(type), listener, capture, opt_listenerScope);\n};\n\n\n/**\n * @param {string|!goog.events.EventId<EVENTOBJ>=} opt_type Event type.\n * @param {boolean=} opt_capture Whether to check for capture or bubble\n *     listeners.\n * @return {boolean} Whether there is any active listeners matching\n *     the requested type and/or capture phase.\n * @template EVENTOBJ\n * @override\n */\ngoog.events.EventTarget.prototype.hasListener = function(\n    opt_type, opt_capture) {\n  var id = (opt_type !== undefined) ? String(opt_type) : undefined;\n  return this.eventTargetListeners_.hasListener(id, opt_capture);\n};\n\n\n/**\n * Sets the target to be used for `event.target` when firing\n * event. Mainly used for testing. For example, see\n * `goog.testing.events.mixinListenable`.\n * @param {!Object} target The target.\n */\ngoog.events.EventTarget.prototype.setTargetForTesting = function(target) {\n  this.actualEventTarget_ = target;\n};\n\n\n/**\n * Asserts that the event target instance is initialized properly.\n * @private\n */\ngoog.events.EventTarget.prototype.assertInitialized_ = function() {\n  goog.asserts.assert(\n      this.eventTargetListeners_,\n      'Event target is not initialized. Did you call the superclass ' +\n          '(goog.events.EventTarget) constructor?');\n};\n\n\n/**\n * Dispatches the given event on the ancestorsTree.\n *\n * @param {!Object} target The target to dispatch on.\n * @param {goog.events.Event|Object|string} e The event object.\n * @param {Array<goog.events.Listenable>=} opt_ancestorsTree The ancestors\n *     tree of the target, in reverse order from the closest ancestor\n *     to the root event target. May be null if the target has no ancestor.\n * @return {boolean} If anyone called preventDefault on the event object (or\n *     if any of the listeners returns false) this will also return false.\n * @private\n */\ngoog.events.EventTarget.dispatchEventInternal_ = function(\n    target, e, opt_ancestorsTree) {\n  /** @suppress {missingProperties} */\n  var type = e.type || /** @type {string} */ (e);\n\n  // If accepting a string or object, create a custom event object so that\n  // preventDefault and stopPropagation work with the event.\n  if (typeof e === 'string') {\n    e = new goog.events.Event(e, target);\n  } else if (!(e instanceof goog.events.Event)) {\n    var oldEvent = e;\n    e = new goog.events.Event(type, target);\n    goog.object.extend(e, oldEvent);\n  } else {\n    e.target = e.target || target;\n  }\n\n  var rv = true, currentTarget;\n\n  // Executes all capture listeners on the ancestors, if any.\n  if (opt_ancestorsTree) {\n    for (var i = opt_ancestorsTree.length - 1;\n         !e.hasPropagationStopped() && i >= 0; i--) {\n      currentTarget = e.currentTarget = opt_ancestorsTree[i];\n      rv = currentTarget.fireListeners(type, true, e) && rv;\n    }\n  }\n\n  // Executes capture and bubble listeners on the target.\n  if (!e.hasPropagationStopped()) {\n    currentTarget = /** @type {?} */ (e.currentTarget = target);\n    rv = currentTarget.fireListeners(type, true, e) && rv;\n    if (!e.hasPropagationStopped()) {\n      rv = currentTarget.fireListeners(type, false, e) && rv;\n    }\n  }\n\n  // Executes all bubble listeners on the ancestors, if any.\n  if (opt_ancestorsTree) {\n    for (i = 0; !e.hasPropagationStopped() && i < opt_ancestorsTree.length;\n         i++) {\n      currentTarget = e.currentTarget = opt_ancestorsTree[i];\n      rv = currentTarget.fireListeners(type, false, e) && rv;\n    }\n  }\n\n  return rv;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview A timer class to which other classes and objects can listen on.\n * This is only an abstraction above `setInterval`.\n *\n * @see ../demos/timers.html\n */\n\ngoog.provide('goog.Timer');\n\ngoog.require('goog.Promise');\ngoog.require('goog.events.EventTarget');\ngoog.requireType('goog.Thenable');\n\n\n\n/**\n * Class for handling timing events.\n *\n * @param {number=} opt_interval Number of ms between ticks (default: 1ms).\n * @param {Object=} opt_timerObject  An object that has `setTimeout`,\n *     `setInterval`, `clearTimeout` and `clearInterval`\n *     (e.g., `window`).\n * @constructor\n * @extends {goog.events.EventTarget}\n */\ngoog.Timer = function(opt_interval, opt_timerObject) {\n  'use strict';\n  goog.events.EventTarget.call(this);\n\n  /**\n   * Number of ms between ticks\n   * @private {number}\n   */\n  this.interval_ = opt_interval || 1;\n\n  /**\n   * An object that implements `setTimeout`, `setInterval`,\n   * `clearTimeout` and `clearInterval`. We default to the window\n   * object. Changing this on {@link goog.Timer.prototype} changes the object\n   * for all timer instances which can be useful if your environment has some\n   * other implementation of timers than the `window` object.\n   * @private {{setTimeout:!Function, clearTimeout:!Function}}\n   */\n  this.timerObject_ = /** @type {{setTimeout, clearTimeout}} */ (\n      opt_timerObject || goog.Timer.defaultTimerObject);\n\n  /**\n   * Cached `tick_` bound to the object for later use in the timer.\n   * @private {Function}\n   * @const\n   */\n  this.boundTick_ = goog.bind(this.tick_, this);\n\n  /**\n   * Firefox browser often fires the timer event sooner (sometimes MUCH sooner)\n   * than the requested timeout. So we compare the time to when the event was\n   * last fired, and reschedule if appropriate. See also\n   * {@link goog.Timer.intervalScale}.\n   * @private {number}\n   */\n  this.last_ = goog.now();\n};\ngoog.inherits(goog.Timer, goog.events.EventTarget);\n\n\n/**\n * Maximum timeout value.\n *\n * Timeout values too big to fit into a signed 32-bit integer may cause overflow\n * in FF, Safari, and Chrome, resulting in the timeout being scheduled\n * immediately. It makes more sense simply not to schedule these timeouts, since\n * 24.8 days is beyond a reasonable expectation for the browser to stay open.\n *\n * @private {number}\n * @const\n */\ngoog.Timer.MAX_TIMEOUT_ = 2147483647;\n\n\n/**\n * A timer ID that cannot be returned by any known implementation of\n * `window.setTimeout`. Passing this value to `window.clearTimeout`\n * should therefore be a no-op.\n *\n * @private {number}\n * @const\n */\ngoog.Timer.INVALID_TIMEOUT_ID_ = -1;\n\n\n/**\n * Whether this timer is enabled\n * @type {boolean}\n */\ngoog.Timer.prototype.enabled = false;\n\n\n/**\n * An object that implements `setTimeout`, `setInterval`,\n * `clearTimeout` and `clearInterval`. We default to the global\n * object. Changing `goog.Timer.defaultTimerObject` changes the object for\n * all timer instances which can be useful if your environment has some other\n * implementation of timers you'd like to use.\n * @type {{setTimeout, clearTimeout}}\n */\ngoog.Timer.defaultTimerObject = goog.global;\n\n\n/**\n * Variable that controls the timer error correction. If the timer is called\n * before the requested interval times `intervalScale`, which often\n * happens on Mozilla, the timer is rescheduled.\n * @see {@link #last_}\n * @type {number}\n */\ngoog.Timer.intervalScale = 0.8;\n\n\n/**\n * Variable for storing the result of `setInterval`.\n * @private {?number}\n */\ngoog.Timer.prototype.timer_ = null;\n\n\n/**\n * Gets the interval of the timer.\n * @return {number} interval Number of ms between ticks.\n */\ngoog.Timer.prototype.getInterval = function() {\n  'use strict';\n  return this.interval_;\n};\n\n\n/**\n * Sets the interval of the timer.\n * @param {number} interval Number of ms between ticks.\n */\ngoog.Timer.prototype.setInterval = function(interval) {\n  'use strict';\n  this.interval_ = interval;\n  if (this.timer_ && this.enabled) {\n    // Stop and then start the timer to reset the interval.\n    this.stop();\n    this.start();\n  } else if (this.timer_) {\n    this.stop();\n  }\n};\n\n\n/**\n * Callback for the `setTimeout` used by the timer.\n * @private\n */\ngoog.Timer.prototype.tick_ = function() {\n  'use strict';\n  if (this.enabled) {\n    var elapsed = goog.now() - this.last_;\n    if (elapsed > 0 && elapsed < this.interval_ * goog.Timer.intervalScale) {\n      this.timer_ = this.timerObject_.setTimeout(\n          this.boundTick_, this.interval_ - elapsed);\n      return;\n    }\n\n    // Prevents setInterval from registering a duplicate timeout when called\n    // in the timer event handler.\n    if (this.timer_) {\n      this.timerObject_.clearTimeout(this.timer_);\n      this.timer_ = null;\n    }\n\n    this.dispatchTick();\n    // The timer could be stopped in the timer event handler.\n    if (this.enabled) {\n      // Stop and start to ensure there is always only one timeout even if\n      // start is called in the timer event handler.\n      this.stop();\n      this.start();\n    }\n  }\n};\n\n\n/**\n * Dispatches the TICK event. This is its own method so subclasses can override.\n */\ngoog.Timer.prototype.dispatchTick = function() {\n  'use strict';\n  this.dispatchEvent(goog.Timer.TICK);\n};\n\n\n/**\n * Starts the timer.\n */\ngoog.Timer.prototype.start = function() {\n  'use strict';\n  this.enabled = true;\n\n  // If there is no interval already registered, start it now\n  if (!this.timer_) {\n    // IMPORTANT!\n    // window.setInterval in FireFox has a bug - it fires based on\n    // absolute time, rather than on relative time. What this means\n    // is that if a computer is sleeping/hibernating for 24 hours\n    // and the timer interval was configured to fire every 1000ms,\n    // then after the PC wakes up the timer will fire, in rapid\n    // succession, 3600*24 times.\n    // This bug is described here and is already fixed, but it will\n    // take time to propagate, so for now I am switching this over\n    // to setTimeout logic.\n    //     https://bugzilla.mozilla.org/show_bug.cgi?id=376643\n    //\n    this.timer_ = this.timerObject_.setTimeout(this.boundTick_, this.interval_);\n    this.last_ = goog.now();\n  }\n};\n\n\n/**\n * Stops the timer.\n */\ngoog.Timer.prototype.stop = function() {\n  'use strict';\n  this.enabled = false;\n  if (this.timer_) {\n    this.timerObject_.clearTimeout(this.timer_);\n    this.timer_ = null;\n  }\n};\n\n\n/** @override */\ngoog.Timer.prototype.disposeInternal = function() {\n  'use strict';\n  goog.Timer.superClass_.disposeInternal.call(this);\n  this.stop();\n  delete this.timerObject_;\n};\n\n\n/**\n * Constant for the timer's event type.\n * @const\n */\ngoog.Timer.TICK = 'tick';\n\n\n/**\n * Calls the given function once, after the optional pause.\n * <p>\n * The function is always called asynchronously, even if the delay is 0. This\n * is a common trick to schedule a function to run after a batch of browser\n * event processing.\n *\n * @param {function(this:SCOPE)|{handleEvent:function()}|null} listener Function\n *     or object that has a handleEvent method.\n * @param {number=} opt_delay Milliseconds to wait; default is 0.\n * @param {SCOPE=} opt_handler Object in whose scope to call the listener.\n * @return {number} A handle to the timer ID.\n * @template SCOPE\n */\ngoog.Timer.callOnce = function(listener, opt_delay, opt_handler) {\n  'use strict';\n  if (goog.isFunction(listener)) {\n    if (opt_handler) {\n      listener = goog.bind(listener, opt_handler);\n    }\n  } else if (listener && typeof listener.handleEvent == 'function') {\n    // using typeof to prevent strict js warning\n    listener = goog.bind(listener.handleEvent, listener);\n  } else {\n    throw new Error('Invalid listener argument');\n  }\n\n  if (Number(opt_delay) > goog.Timer.MAX_TIMEOUT_) {\n    // Timeouts greater than MAX_INT return immediately due to integer\n    // overflow in many browsers.  Since MAX_INT is 24.8 days, just don't\n    // schedule anything at all.\n    return goog.Timer.INVALID_TIMEOUT_ID_;\n  } else {\n    return goog.Timer.defaultTimerObject.setTimeout(listener, opt_delay || 0);\n  }\n};\n\n\n/**\n * Clears a timeout initiated by {@link #callOnce}.\n * @param {?number} timerId A timer ID.\n */\ngoog.Timer.clear = function(timerId) {\n  'use strict';\n  goog.Timer.defaultTimerObject.clearTimeout(timerId);\n};\n\n\n/**\n * @param {number} delay Milliseconds to wait.\n * @param {(RESULT|goog.Thenable<RESULT>|Thenable)=} opt_result The value\n *     with which the promise will be resolved.\n * @return {!goog.Promise<RESULT>} A promise that will be resolved after\n *     the specified delay, unless it is canceled first.\n * @template RESULT\n */\ngoog.Timer.promise = function(delay, opt_result) {\n  'use strict';\n  var timerKey = null;\n  return new goog\n      .Promise(function(resolve, reject) {\n        'use strict';\n        timerKey = goog.Timer.callOnce(function() {\n          'use strict';\n          resolve(opt_result);\n        }, delay);\n        if (timerKey == goog.Timer.INVALID_TIMEOUT_ID_) {\n          reject(new Error('Failed to schedule timer.'));\n        }\n      })\n      .thenCatch(function(error) {\n        'use strict';\n        // Clear the timer. The most likely reason is \"cancel\" signal.\n        goog.Timer.clear(timerKey);\n        throw error;\n      });\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Generics method for collection-like classes and objects.\n *\n *\n * This file contains functions to work with collections. It supports using\n * Map, Set, Array and Object and other classes that implement collection-like\n * methods.\n * @suppress {strictMissingProperties}\n */\n\n\ngoog.provide('goog.structs');\n\ngoog.require('goog.array');\ngoog.require('goog.object');\n\n\n// We treat an object as a dictionary if it has getKeys or it is an object that\n// isn't arrayLike.\n\n\n/**\n * Returns the number of values in the collection-like object.\n * @param {Object} col The collection-like object.\n * @return {number} The number of values in the collection-like object.\n */\ngoog.structs.getCount = function(col) {\n  if (col.getCount && typeof col.getCount == 'function') {\n    return col.getCount();\n  }\n  if (goog.isArrayLike(col) || typeof col === 'string') {\n    return col.length;\n  }\n  return goog.object.getCount(col);\n};\n\n\n/**\n * Returns the values of the collection-like object.\n * @param {Object} col The collection-like object.\n * @return {!Array<?>} The values in the collection-like object.\n */\ngoog.structs.getValues = function(col) {\n  if (col.getValues && typeof col.getValues == 'function') {\n    return col.getValues();\n  }\n  if (typeof col === 'string') {\n    return col.split('');\n  }\n  if (goog.isArrayLike(col)) {\n    var rv = [];\n    var l = col.length;\n    for (var i = 0; i < l; i++) {\n      rv.push(col[i]);\n    }\n    return rv;\n  }\n  return goog.object.getValues(col);\n};\n\n\n/**\n * Returns the keys of the collection. Some collections have no notion of\n * keys/indexes and this function will return undefined in those cases.\n * @param {Object} col The collection-like object.\n * @return {!Array|undefined} The keys in the collection.\n */\ngoog.structs.getKeys = function(col) {\n  if (col.getKeys && typeof col.getKeys == 'function') {\n    return col.getKeys();\n  }\n  // if we have getValues but no getKeys we know this is a key-less collection\n  if (col.getValues && typeof col.getValues == 'function') {\n    return undefined;\n  }\n  if (goog.isArrayLike(col) || typeof col === 'string') {\n    var rv = [];\n    var l = col.length;\n    for (var i = 0; i < l; i++) {\n      rv.push(i);\n    }\n    return rv;\n  }\n\n  return goog.object.getKeys(col);\n};\n\n\n/**\n * Whether the collection contains the given value. This is O(n) and uses\n * equals (==) to test the existence.\n * @param {Object} col The collection-like object.\n * @param {*} val The value to check for.\n * @return {boolean} True if the map contains the value.\n */\ngoog.structs.contains = function(col, val) {\n  if (col.contains && typeof col.contains == 'function') {\n    return col.contains(val);\n  }\n  if (col.containsValue && typeof col.containsValue == 'function') {\n    return col.containsValue(val);\n  }\n  if (goog.isArrayLike(col) || typeof col === 'string') {\n    return goog.array.contains(/** @type {!Array<?>} */ (col), val);\n  }\n  return goog.object.containsValue(col, val);\n};\n\n\n/**\n * Whether the collection is empty.\n * @param {Object} col The collection-like object.\n * @return {boolean} True if empty.\n */\ngoog.structs.isEmpty = function(col) {\n  if (col.isEmpty && typeof col.isEmpty == 'function') {\n    return col.isEmpty();\n  }\n\n  // We do not use goog.string.isEmptyOrWhitespace because here we treat the\n  // string as\n  // collection and as such even whitespace matters\n\n  if (goog.isArrayLike(col) || typeof col === 'string') {\n    return goog.array.isEmpty(/** @type {!Array<?>} */ (col));\n  }\n  return goog.object.isEmpty(col);\n};\n\n\n/**\n * Removes all the elements from the collection.\n * @param {Object} col The collection-like object.\n */\ngoog.structs.clear = function(col) {\n  // NOTE(arv): This should not contain strings because strings are immutable\n  if (col.clear && typeof col.clear == 'function') {\n    col.clear();\n  } else if (goog.isArrayLike(col)) {\n    goog.array.clear(/** @type {IArrayLike<?>} */ (col));\n  } else {\n    goog.object.clear(col);\n  }\n};\n\n\n/**\n * Calls a function for each value in a collection. The function takes\n * three arguments; the value, the key and the collection.\n *\n * @param {S} col The collection-like object.\n * @param {function(this:T,?,?,S):?} f The function to call for every value.\n *     This function takes\n *     3 arguments (the value, the key or undefined if the collection has no\n *     notion of keys, and the collection) and the return value is irrelevant.\n * @param {T=} opt_obj The object to be used as the value of 'this'\n *     within `f`.\n * @template T,S\n * @deprecated Use a more specific method, e.g. goog.array.forEach,\n *     goog.object.forEach, or for-of.\n */\ngoog.structs.forEach = function(col, f, opt_obj) {\n  if (col.forEach && typeof col.forEach == 'function') {\n    col.forEach(f, opt_obj);\n  } else if (goog.isArrayLike(col) || typeof col === 'string') {\n    goog.array.forEach(/** @type {!Array<?>} */ (col), f, opt_obj);\n  } else {\n    var keys = goog.structs.getKeys(col);\n    var values = goog.structs.getValues(col);\n    var l = values.length;\n    for (var i = 0; i < l; i++) {\n      f.call(/** @type {?} */ (opt_obj), values[i], keys && keys[i], col);\n    }\n  }\n};\n\n\n/**\n * Calls a function for every value in the collection. When a call returns true,\n * adds the value to a new collection (Array is returned by default).\n *\n * @param {S} col The collection-like object.\n * @param {function(this:T,?,?,S):boolean} f The function to call for every\n *     value. This function takes\n *     3 arguments (the value, the key or undefined if the collection has no\n *     notion of keys, and the collection) and should return a Boolean. If the\n *     return value is true the value is added to the result collection. If it\n *     is false the value is not included.\n * @param {T=} opt_obj The object to be used as the value of 'this'\n *     within `f`.\n * @return {!Object|!Array<?>} A new collection where the passed values are\n *     present. If col is a key-less collection an array is returned.  If col\n *     has keys and values a plain old JS object is returned.\n * @template T,S\n */\ngoog.structs.filter = function(col, f, opt_obj) {\n  if (typeof col.filter == 'function') {\n    return col.filter(f, opt_obj);\n  }\n  if (goog.isArrayLike(col) || typeof col === 'string') {\n    return goog.array.filter(/** @type {!Array<?>} */ (col), f, opt_obj);\n  }\n\n  var rv;\n  var keys = goog.structs.getKeys(col);\n  var values = goog.structs.getValues(col);\n  var l = values.length;\n  if (keys) {\n    rv = {};\n    for (var i = 0; i < l; i++) {\n      if (f.call(/** @type {?} */ (opt_obj), values[i], keys[i], col)) {\n        rv[keys[i]] = values[i];\n      }\n    }\n  } else {\n    // We should not use goog.array.filter here since we want to make sure that\n    // the index is undefined as well as make sure that col is passed to the\n    // function.\n    rv = [];\n    for (var i = 0; i < l; i++) {\n      if (f.call(opt_obj, values[i], undefined, col)) {\n        rv.push(values[i]);\n      }\n    }\n  }\n  return rv;\n};\n\n\n/**\n * Calls a function for every value in the collection and adds the result into a\n * new collection (defaults to creating a new Array).\n *\n * @param {S} col The collection-like object.\n * @param {function(this:T,?,?,S):V} f The function to call for every value.\n *     This function takes 3 arguments (the value, the key or undefined if the\n *     collection has no notion of keys, and the collection) and should return\n *     something. The result will be used as the value in the new collection.\n * @param {T=} opt_obj  The object to be used as the value of 'this'\n *     within `f`.\n * @return {!Object<V>|!Array<V>} A new collection with the new values.  If\n *     col is a key-less collection an array is returned.  If col has keys and\n *     values a plain old JS object is returned.\n * @template T,S,V\n */\ngoog.structs.map = function(col, f, opt_obj) {\n  if (typeof col.map == 'function') {\n    return col.map(f, opt_obj);\n  }\n  if (goog.isArrayLike(col) || typeof col === 'string') {\n    return goog.array.map(/** @type {!Array<?>} */ (col), f, opt_obj);\n  }\n\n  var rv;\n  var keys = goog.structs.getKeys(col);\n  var values = goog.structs.getValues(col);\n  var l = values.length;\n  if (keys) {\n    rv = {};\n    for (var i = 0; i < l; i++) {\n      rv[keys[i]] = f.call(/** @type {?} */ (opt_obj), values[i], keys[i], col);\n    }\n  } else {\n    // We should not use goog.array.map here since we want to make sure that\n    // the index is undefined as well as make sure that col is passed to the\n    // function.\n    rv = [];\n    for (var i = 0; i < l; i++) {\n      rv[i] = f.call(/** @type {?} */ (opt_obj), values[i], undefined, col);\n    }\n  }\n  return rv;\n};\n\n\n/**\n * Calls f for each value in a collection. If any call returns true this returns\n * true (without checking the rest). If all returns false this returns false.\n *\n * @param {S} col The collection-like object.\n * @param {function(this:T,?,?,S):boolean} f The function to call for every\n *     value. This function takes 3 arguments (the value, the key or undefined\n *     if the collection has no notion of keys, and the collection) and should\n *     return a boolean.\n * @param {T=} opt_obj  The object to be used as the value of 'this'\n *     within `f`.\n * @return {boolean} True if any value passes the test.\n * @template T,S\n */\ngoog.structs.some = function(col, f, opt_obj) {\n  if (typeof col.some == 'function') {\n    return col.some(f, opt_obj);\n  }\n  if (goog.isArrayLike(col) || typeof col === 'string') {\n    return goog.array.some(/** @type {!Array<?>} */ (col), f, opt_obj);\n  }\n  var keys = goog.structs.getKeys(col);\n  var values = goog.structs.getValues(col);\n  var l = values.length;\n  for (var i = 0; i < l; i++) {\n    if (f.call(/** @type {?} */ (opt_obj), values[i], keys && keys[i], col)) {\n      return true;\n    }\n  }\n  return false;\n};\n\n\n/**\n * Calls f for each value in a collection. If all calls return true this return\n * true this returns true. If any returns false this returns false at this point\n *  and does not continue to check the remaining values.\n *\n * @param {S} col The collection-like object.\n * @param {function(this:T,?,?,S):boolean} f The function to call for every\n *     value. This function takes 3 arguments (the value, the key or\n *     undefined if the collection has no notion of keys, and the collection)\n *     and should return a boolean.\n * @param {T=} opt_obj  The object to be used as the value of 'this'\n *     within `f`.\n * @return {boolean} True if all key-value pairs pass the test.\n * @template T,S\n */\ngoog.structs.every = function(col, f, opt_obj) {\n  if (typeof col.every == 'function') {\n    return col.every(f, opt_obj);\n  }\n  if (goog.isArrayLike(col) || typeof col === 'string') {\n    return goog.array.every(/** @type {!Array<?>} */ (col), f, opt_obj);\n  }\n  var keys = goog.structs.getKeys(col);\n  var values = goog.structs.getValues(col);\n  var l = values.length;\n  for (var i = 0; i < l; i++) {\n    if (!f.call(/** @type {?} */ (opt_obj), values[i], keys && keys[i], col)) {\n      return false;\n    }\n  }\n  return true;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Datastructure: Hash Map.\n *\n *\n * This file contains an implementation of a Map structure. It implements a lot\n * of the methods used in goog.structs so those functions work on hashes. This\n * is best suited for complex key types. For simple keys such as numbers and\n * strings consider using the lighter-weight utilities in goog.object.\n */\n\n\ngoog.provide('goog.structs.Map');\n\ngoog.require('goog.iter.Iterator');\ngoog.require('goog.iter.StopIteration');\n\n\n\n/**\n * Class for Hash Map datastructure.\n * @param {*=} opt_map Map or Object to initialize the map with.\n * @param {...*} var_args If 2 or more arguments are present then they\n *     will be used as key-value pairs.\n * @constructor\n * @template K, V\n * @deprecated This type is misleading: use ES6 Map instead.\n */\ngoog.structs.Map = function(opt_map, var_args) {\n\n  /**\n   * Underlying JS object used to implement the map.\n   * @private {!Object}\n   */\n  this.map_ = {};\n\n  /**\n   * An array of keys. This is necessary for two reasons:\n   *   1. Iterating the keys using for (var key in this.map_) allocates an\n   *      object for every key in IE which is really bad for IE6 GC perf.\n   *   2. Without a side data structure, we would need to escape all the keys\n   *      as that would be the only way we could tell during iteration if the\n   *      key was an internal key or a property of the object.\n   *\n   * This array can contain deleted keys so it's necessary to check the map\n   * as well to see if the key is still in the map (this doesn't require a\n   * memory allocation in IE).\n   * @private {!Array<string>}\n   */\n  this.keys_ = [];\n\n  /**\n   * The number of key value pairs in the map.\n   * @private {number}\n   */\n  this.count_ = 0;\n\n  /**\n   * Version used to detect changes while iterating.\n   * @private {number}\n   */\n  this.version_ = 0;\n\n  var argLength = arguments.length;\n\n  if (argLength > 1) {\n    if (argLength % 2) {\n      throw new Error('Uneven number of arguments');\n    }\n    for (var i = 0; i < argLength; i += 2) {\n      this.set(arguments[i], arguments[i + 1]);\n    }\n  } else if (opt_map) {\n    this.addAll(/** @type {!Object} */ (opt_map));\n  }\n};\n\n\n/**\n * @return {number} The number of key-value pairs in the map.\n */\ngoog.structs.Map.prototype.getCount = function() {\n  return this.count_;\n};\n\n\n/**\n * Returns the values of the map.\n * @return {!Array<V>} The values in the map.\n */\ngoog.structs.Map.prototype.getValues = function() {\n  this.cleanupKeysArray_();\n\n  var rv = [];\n  for (var i = 0; i < this.keys_.length; i++) {\n    var key = this.keys_[i];\n    rv.push(this.map_[key]);\n  }\n  return rv;\n};\n\n\n/**\n * Returns the keys of the map.\n * @return {!Array<string>} Array of string values.\n */\ngoog.structs.Map.prototype.getKeys = function() {\n  this.cleanupKeysArray_();\n  return /** @type {!Array<string>} */ (this.keys_.concat());\n};\n\n\n/**\n * Whether the map contains the given key.\n * @param {*} key The key to check for.\n * @return {boolean} Whether the map contains the key.\n */\ngoog.structs.Map.prototype.containsKey = function(key) {\n  return goog.structs.Map.hasKey_(this.map_, key);\n};\n\n\n/**\n * Whether the map contains the given value. This is O(n).\n * @param {V} val The value to check for.\n * @return {boolean} Whether the map contains the value.\n */\ngoog.structs.Map.prototype.containsValue = function(val) {\n  for (var i = 0; i < this.keys_.length; i++) {\n    var key = this.keys_[i];\n    if (goog.structs.Map.hasKey_(this.map_, key) && this.map_[key] == val) {\n      return true;\n    }\n  }\n  return false;\n};\n\n\n/**\n * Whether this map is equal to the argument map.\n * @param {goog.structs.Map} otherMap The map against which to test equality.\n * @param {function(V, V): boolean=} opt_equalityFn Optional equality function\n *     to test equality of values. If not specified, this will test whether\n *     the values contained in each map are identical objects.\n * @return {boolean} Whether the maps are equal.\n */\ngoog.structs.Map.prototype.equals = function(otherMap, opt_equalityFn) {\n  if (this === otherMap) {\n    return true;\n  }\n\n  if (this.count_ != otherMap.getCount()) {\n    return false;\n  }\n\n  var equalityFn = opt_equalityFn || goog.structs.Map.defaultEquals;\n\n  this.cleanupKeysArray_();\n  for (var key, i = 0; key = this.keys_[i]; i++) {\n    if (!equalityFn(this.get(key), otherMap.get(key))) {\n      return false;\n    }\n  }\n\n  return true;\n};\n\n\n/**\n * Default equality test for values.\n * @param {*} a The first value.\n * @param {*} b The second value.\n * @return {boolean} Whether a and b reference the same object.\n */\ngoog.structs.Map.defaultEquals = function(a, b) {\n  return a === b;\n};\n\n\n/**\n * @return {boolean} Whether the map is empty.\n */\ngoog.structs.Map.prototype.isEmpty = function() {\n  return this.count_ == 0;\n};\n\n\n/**\n * Removes all key-value pairs from the map.\n */\ngoog.structs.Map.prototype.clear = function() {\n  this.map_ = {};\n  this.keys_.length = 0;\n  this.count_ = 0;\n  this.version_ = 0;\n};\n\n\n/**\n * Removes a key-value pair based on the key. This is O(logN) amortized due to\n * updating the keys array whenever the count becomes half the size of the keys\n * in the keys array.\n * @param {*} key  The key to remove.\n * @return {boolean} Whether object was removed.\n */\ngoog.structs.Map.prototype.remove = function(key) {\n  if (goog.structs.Map.hasKey_(this.map_, key)) {\n    delete this.map_[key];\n    this.count_--;\n    this.version_++;\n\n    // clean up the keys array if the threshold is hit\n    if (this.keys_.length > 2 * this.count_) {\n      this.cleanupKeysArray_();\n    }\n\n    return true;\n  }\n  return false;\n};\n\n\n/**\n * Cleans up the temp keys array by removing entries that are no longer in the\n * map.\n * @private\n */\ngoog.structs.Map.prototype.cleanupKeysArray_ = function() {\n  if (this.count_ != this.keys_.length) {\n    // First remove keys that are no longer in the map.\n    var srcIndex = 0;\n    var destIndex = 0;\n    while (srcIndex < this.keys_.length) {\n      var key = this.keys_[srcIndex];\n      if (goog.structs.Map.hasKey_(this.map_, key)) {\n        this.keys_[destIndex++] = key;\n      }\n      srcIndex++;\n    }\n    this.keys_.length = destIndex;\n  }\n\n  if (this.count_ != this.keys_.length) {\n    // If the count still isn't correct, that means we have duplicates. This can\n    // happen when the same key is added and removed multiple times. Now we have\n    // to allocate one extra Object to remove the duplicates. This could have\n    // been done in the first pass, but in the common case, we can avoid\n    // allocating an extra object by only doing this when necessary.\n    var seen = {};\n    var srcIndex = 0;\n    var destIndex = 0;\n    while (srcIndex < this.keys_.length) {\n      var key = this.keys_[srcIndex];\n      if (!(goog.structs.Map.hasKey_(seen, key))) {\n        this.keys_[destIndex++] = key;\n        seen[key] = 1;\n      }\n      srcIndex++;\n    }\n    this.keys_.length = destIndex;\n  }\n};\n\n\n/**\n * Returns the value for the given key.  If the key is not found and the default\n * value is not given this will return `undefined`.\n * @param {*} key The key to get the value for.\n * @param {DEFAULT=} opt_val The value to return if no item is found for the\n *     given key, defaults to undefined.\n * @return {V|DEFAULT} The value for the given key.\n * @template DEFAULT\n */\ngoog.structs.Map.prototype.get = function(key, opt_val) {\n  if (goog.structs.Map.hasKey_(this.map_, key)) {\n    return this.map_[key];\n  }\n  return opt_val;\n};\n\n\n/**\n * Adds a key-value pair to the map.\n * @param {*} key The key.\n * @param {V} value The value to add.\n * @return {*} Some subclasses return a value.\n */\ngoog.structs.Map.prototype.set = function(key, value) {\n  if (!(goog.structs.Map.hasKey_(this.map_, key))) {\n    this.count_++;\n    // TODO(johnlenz): This class lies, it claims to return an array of string\n    // keys, but instead returns the original object used.\n    this.keys_.push(/** @type {?} */ (key));\n    // Only change the version if we add a new key.\n    this.version_++;\n  }\n  this.map_[key] = value;\n};\n\n\n/**\n * Adds multiple key-value pairs from another goog.structs.Map or Object.\n * @param {?Object} map Object containing the data to add.\n */\ngoog.structs.Map.prototype.addAll = function(map) {\n  if (map instanceof goog.structs.Map) {\n    var keys = map.getKeys();\n    for (var i = 0; i < keys.length; i++) {\n      this.set(keys[i], map.get(keys[i]));\n    }\n  } else {\n    for (var key in map) {\n      this.set(key, map[key]);\n    }\n  }\n};\n\n\n/**\n * Calls the given function on each entry in the map.\n * @param {function(this:T, V, K, goog.structs.Map<K,V>)} f\n * @param {T=} opt_obj The value of \"this\" inside f.\n * @template T\n */\ngoog.structs.Map.prototype.forEach = function(f, opt_obj) {\n  var keys = this.getKeys();\n  for (var i = 0; i < keys.length; i++) {\n    var key = keys[i];\n    var value = this.get(key);\n    f.call(opt_obj, value, key, this);\n  }\n};\n\n\n/**\n * Clones a map and returns a new map.\n * @return {!goog.structs.Map} A new map with the same key-value pairs.\n */\ngoog.structs.Map.prototype.clone = function() {\n  return new goog.structs.Map(this);\n};\n\n\n/**\n * Returns a new map in which all the keys and values are interchanged\n * (keys become values and values become keys). If multiple keys map to the\n * same value, the chosen transposed value is implementation-dependent.\n *\n * It acts very similarly to {goog.object.transpose(Object)}.\n *\n * @return {!goog.structs.Map} The transposed map.\n */\ngoog.structs.Map.prototype.transpose = function() {\n  var transposed = new goog.structs.Map();\n  for (var i = 0; i < this.keys_.length; i++) {\n    var key = this.keys_[i];\n    var value = this.map_[key];\n    transposed.set(value, key);\n  }\n\n  return transposed;\n};\n\n\n/**\n * @return {!Object} Object representation of the map.\n */\ngoog.structs.Map.prototype.toObject = function() {\n  this.cleanupKeysArray_();\n  var obj = {};\n  for (var i = 0; i < this.keys_.length; i++) {\n    var key = this.keys_[i];\n    obj[key] = this.map_[key];\n  }\n  return obj;\n};\n\n\n/**\n * Returns an iterator that iterates over the keys in the map.  Removal of keys\n * while iterating might have undesired side effects.\n * @return {!goog.iter.Iterator} An iterator over the keys in the map.\n */\ngoog.structs.Map.prototype.getKeyIterator = function() {\n  return this.__iterator__(true);\n};\n\n\n/**\n * Returns an iterator that iterates over the values in the map.  Removal of\n * keys while iterating might have undesired side effects.\n * @return {!goog.iter.Iterator} An iterator over the values in the map.\n */\ngoog.structs.Map.prototype.getValueIterator = function() {\n  return this.__iterator__(false);\n};\n\n\n/**\n * Returns an iterator that iterates over the values or the keys in the map.\n * This throws an exception if the map was mutated since the iterator was\n * created.\n * @param {boolean=} opt_keys True to iterate over the keys. False to iterate\n *     over the values.  The default value is false.\n * @return {!goog.iter.Iterator} An iterator over the values or keys in the map.\n */\ngoog.structs.Map.prototype.__iterator__ = function(opt_keys) {\n  // Clean up keys to minimize the risk of iterating over dead keys.\n  this.cleanupKeysArray_();\n\n  var i = 0;\n  var version = this.version_;\n  var selfObj = this;\n\n  var newIter = new goog.iter.Iterator;\n  newIter.next = function() {\n    if (version != selfObj.version_) {\n      throw new Error('The map has changed since the iterator was created');\n    }\n    if (i >= selfObj.keys_.length) {\n      throw goog.iter.StopIteration;\n    }\n    var key = selfObj.keys_[i++];\n    return opt_keys ? key : selfObj.map_[key];\n  };\n  return newIter;\n};\n\n\n/**\n * Safe way to test for hasOwnProperty.  It even allows testing for\n * 'hasOwnProperty'.\n * @param {!Object} obj The object to test for presence of the given key.\n * @param {*} key The key to check for.\n * @return {boolean} Whether the object has the key.\n * @private\n */\ngoog.structs.Map.hasKey_ = function(obj, key) {\n  return Object.prototype.hasOwnProperty.call(obj, key);\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Simple utilities for dealing with URI strings.\n *\n * This is intended to be a lightweight alternative to constructing goog.Uri\n * objects.  Whereas goog.Uri adds several kilobytes to the binary regardless\n * of how much of its functionality you use, this is designed to be a set of\n * mostly-independent utilities so that the compiler includes only what is\n * necessary for the task.  Estimated savings of porting is 5k pre-gzip and\n * 1.5k post-gzip.  To ensure the savings remain, future developers should\n * avoid adding new functionality to existing functions, but instead create\n * new ones and factor out shared code.\n *\n * Many of these utilities have limited functionality, tailored to common\n * cases.  The query parameter utilities assume that the parameter keys are\n * already encoded, since most keys are compile-time alphanumeric strings.  The\n * query parameter mutation utilities also do not tolerate fragment identifiers.\n *\n * By design, these functions can be slower than goog.Uri equivalents.\n * Repeated calls to some of functions may be quadratic in behavior for IE,\n * although the effect is somewhat limited given the 2kb limit.\n *\n * One advantage of the limited functionality here is that this approach is\n * less sensitive to differences in URI encodings than goog.Uri, since these\n * functions operate on strings directly, rather than decoding them and\n * then re-encoding.\n *\n * Uses features of RFC 3986 for parsing/formatting URIs:\n *   http://www.ietf.org/rfc/rfc3986.txt\n */\n\ngoog.provide('goog.uri.utils');\ngoog.provide('goog.uri.utils.ComponentIndex');\ngoog.provide('goog.uri.utils.QueryArray');\ngoog.provide('goog.uri.utils.QueryValue');\ngoog.provide('goog.uri.utils.StandardQueryParam');\n\ngoog.require('goog.asserts');\ngoog.require('goog.string');\n\n\n/**\n * Character codes inlined to avoid object allocations due to charCode.\n * @enum {number}\n * @private\n */\ngoog.uri.utils.CharCode_ = {\n  AMPERSAND: 38,\n  EQUAL: 61,\n  HASH: 35,\n  QUESTION: 63\n};\n\n\n/**\n * Builds a URI string from already-encoded parts.\n *\n * No encoding is performed.  Any component may be omitted as either null or\n * undefined.\n *\n * @param {?string=} opt_scheme The scheme such as 'http'.\n * @param {?string=} opt_userInfo The user name before the '@'.\n * @param {?string=} opt_domain The domain such as 'www.google.com', already\n *     URI-encoded.\n * @param {(string|number|null)=} opt_port The port number.\n * @param {?string=} opt_path The path, already URI-encoded.  If it is not\n *     empty, it must begin with a slash.\n * @param {?string=} opt_queryData The URI-encoded query data.\n * @param {?string=} opt_fragment The URI-encoded fragment identifier.\n * @return {string} The fully combined URI.\n */\ngoog.uri.utils.buildFromEncodedParts = function(\n    opt_scheme, opt_userInfo, opt_domain, opt_port, opt_path, opt_queryData,\n    opt_fragment) {\n  var out = '';\n\n  if (opt_scheme) {\n    out += opt_scheme + ':';\n  }\n\n  if (opt_domain) {\n    out += '//';\n\n    if (opt_userInfo) {\n      out += opt_userInfo + '@';\n    }\n\n    out += opt_domain;\n\n    if (opt_port) {\n      out += ':' + opt_port;\n    }\n  }\n\n  if (opt_path) {\n    out += opt_path;\n  }\n\n  if (opt_queryData) {\n    out += '?' + opt_queryData;\n  }\n\n  if (opt_fragment) {\n    out += '#' + opt_fragment;\n  }\n\n  return out;\n};\n\n\n/**\n * A regular expression for breaking a URI into its component parts.\n *\n * {@link http://www.ietf.org/rfc/rfc3986.txt} says in Appendix B\n * As the \"first-match-wins\" algorithm is identical to the \"greedy\"\n * disambiguation method used by POSIX regular expressions, it is natural and\n * commonplace to use a regular expression for parsing the potential five\n * components of a URI reference.\n *\n * The following line is the regular expression for breaking-down a\n * well-formed URI reference into its components.\n *\n * <pre>\n * ^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\\?([^#]*))?(#(.*))?\n *  12            3  4          5       6  7        8 9\n * </pre>\n *\n * The numbers in the second line above are only to assist readability; they\n * indicate the reference points for each subexpression (i.e., each paired\n * parenthesis). We refer to the value matched for subexpression <n> as $<n>.\n * For example, matching the above expression to\n * <pre>\n *     http://www.ics.uci.edu/pub/ietf/uri/#Related\n * </pre>\n * results in the following subexpression matches:\n * <pre>\n *    $1 = http:\n *    $2 = http\n *    $3 = //www.ics.uci.edu\n *    $4 = www.ics.uci.edu\n *    $5 = /pub/ietf/uri/\n *    $6 = <undefined>\n *    $7 = <undefined>\n *    $8 = #Related\n *    $9 = Related\n * </pre>\n * where <undefined> indicates that the component is not present, as is the\n * case for the query component in the above example. Therefore, we can\n * determine the value of the five components as\n * <pre>\n *    scheme    = $2\n *    authority = $4\n *    path      = $5\n *    query     = $7\n *    fragment  = $9\n * </pre>\n *\n * The regular expression has been modified slightly to expose the\n * userInfo, domain, and port separately from the authority.\n * The modified version yields\n * <pre>\n *    $1 = http              scheme\n *    $2 = <undefined>       userInfo -\\\n *    $3 = www.ics.uci.edu   domain     | authority\n *    $4 = <undefined>       port     -/\n *    $5 = /pub/ietf/uri/    path\n *    $6 = <undefined>       query without ?\n *    $7 = Related           fragment without #\n * </pre>\n *\n * TODO(user): separate out the authority terminating characters once this\n * file is moved to ES6.\n * @type {!RegExp}\n * @private\n */\ngoog.uri.utils.splitRe_ = new RegExp(\n    '^' +  // Anchor against the entire string.\n    '(?:' +\n    '([^:/?#.]+)' +  // scheme - ignore special characters\n                     // used by other URL parts such as :,\n                     // ?, /, #, and .\n    ':)?' +\n    '(?://' +\n    '(?:([^\\\\\\\\/?#]*)@)?' +  // userInfo\n    '([^\\\\\\\\/?#]*?)' +       // domain\n    '(?::([0-9]+))?' +       // port\n    '(?=[\\\\\\\\/?#]|$)' +      // authority-terminating character.\n    ')?' +\n    '([^?#]+)?' +          // path\n    '(?:\\\\?([^#]*))?' +    // query\n    '(?:#([\\\\s\\\\S]*))?' +  // fragment. Can't use '.*' with 's' flag as Firefox\n                           // doesn't support the flag, and can't use an\n                           // \"everything set\" ([^]) as IE10 doesn't match any\n                           // characters with it.\n    '$');\n\n\n/**\n * The index of each URI component in the return value of goog.uri.utils.split.\n * @enum {number}\n */\ngoog.uri.utils.ComponentIndex = {\n  SCHEME: 1,\n  USER_INFO: 2,\n  DOMAIN: 3,\n  PORT: 4,\n  PATH: 5,\n  QUERY_DATA: 6,\n  FRAGMENT: 7\n};\n\n/**\n * @type {?function(string)}\n * @private\n */\ngoog.uri.utils.urlPackageSupportLoggingHandler_ = null;\n\n/**\n * @param {?function(string)} handler The handler function to call when a URI\n *     with a protocol that is better supported by the Closure URL package is\n *     detected.\n */\ngoog.uri.utils.setUrlPackageSupportLoggingHandler = function(handler) {\n  goog.uri.utils.urlPackageSupportLoggingHandler_ = handler;\n};\n\n/**\n * Splits a URI into its component parts.\n *\n * Each component can be accessed via the component indices; for example:\n * <pre>\n * goog.uri.utils.split(someStr)[goog.uri.utils.ComponentIndex.QUERY_DATA];\n * </pre>\n *\n * @param {string} uri The URI string to examine.\n * @return {!Array<string|undefined>} Each component still URI-encoded.\n *     Each component that is present will contain the encoded value, whereas\n *     components that are not present will be undefined or empty, depending\n *     on the browser's regular expression implementation.  Never null, since\n *     arbitrary strings may still look like path names.\n */\ngoog.uri.utils.split = function(uri) {\n  // See @return comment -- never null.\n  var result = /** @type {!Array<string|undefined>} */ (\n      uri.match(goog.uri.utils.splitRe_));\n  if (goog.uri.utils.urlPackageSupportLoggingHandler_ &&\n      ['http', 'https', 'ws', 'wss',\n       'ftp'].indexOf(result[goog.uri.utils.ComponentIndex.SCHEME]) >= 0) {\n    goog.uri.utils.urlPackageSupportLoggingHandler_(uri);\n  }\n  return result;\n};\n\n\n/**\n * @param {?string} uri A possibly null string.\n * @param {boolean=} opt_preserveReserved If true, percent-encoding of RFC-3986\n *     reserved characters will not be removed.\n * @return {?string} The string URI-decoded, or null if uri is null.\n * @private\n */\ngoog.uri.utils.decodeIfPossible_ = function(uri, opt_preserveReserved) {\n  if (!uri) {\n    return uri;\n  }\n\n  return opt_preserveReserved ? decodeURI(uri) : decodeURIComponent(uri);\n};\n\n\n/**\n * Gets a URI component by index.\n *\n * It is preferred to use the getPathEncoded() variety of functions ahead,\n * since they are more readable.\n *\n * @param {goog.uri.utils.ComponentIndex} componentIndex The component index.\n * @param {string} uri The URI to examine.\n * @return {?string} The still-encoded component, or null if the component\n *     is not present.\n * @private\n */\ngoog.uri.utils.getComponentByIndex_ = function(componentIndex, uri) {\n  // Convert undefined, null, and empty string into null.\n  return goog.uri.utils.split(uri)[componentIndex] || null;\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The protocol or scheme, or null if none.  Does not\n *     include trailing colons or slashes.\n */\ngoog.uri.utils.getScheme = function(uri) {\n  return goog.uri.utils.getComponentByIndex_(\n      goog.uri.utils.ComponentIndex.SCHEME, uri);\n};\n\n\n/**\n * Gets the effective scheme for the URL.  If the URL is relative then the\n * scheme is derived from the page's location.\n * @param {string} uri The URI to examine.\n * @return {string} The protocol or scheme, always lower case.\n */\ngoog.uri.utils.getEffectiveScheme = function(uri) {\n  var scheme = goog.uri.utils.getScheme(uri);\n  if (!scheme && goog.global.self && goog.global.self.location) {\n    var protocol = goog.global.self.location.protocol;\n    scheme = protocol.substr(0, protocol.length - 1);\n  }\n  // NOTE: When called from a web worker in Firefox 3.5, location may be null.\n  // All other browsers with web workers support self.location from the worker.\n  return scheme ? scheme.toLowerCase() : '';\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The user name still encoded, or null if none.\n */\ngoog.uri.utils.getUserInfoEncoded = function(uri) {\n  return goog.uri.utils.getComponentByIndex_(\n      goog.uri.utils.ComponentIndex.USER_INFO, uri);\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The decoded user info, or null if none.\n */\ngoog.uri.utils.getUserInfo = function(uri) {\n  return goog.uri.utils.decodeIfPossible_(\n      goog.uri.utils.getUserInfoEncoded(uri));\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The domain name still encoded, or null if none.\n */\ngoog.uri.utils.getDomainEncoded = function(uri) {\n  return goog.uri.utils.getComponentByIndex_(\n      goog.uri.utils.ComponentIndex.DOMAIN, uri);\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The decoded domain, or null if none.\n */\ngoog.uri.utils.getDomain = function(uri) {\n  return goog.uri.utils.decodeIfPossible_(\n      goog.uri.utils.getDomainEncoded(uri), true /* opt_preserveReserved */);\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?number} The port number, or null if none.\n */\ngoog.uri.utils.getPort = function(uri) {\n  // Coerce to a number.  If the result of getComponentByIndex_ is null or\n  // non-numeric, the number coersion yields NaN.  This will then return\n  // null for all non-numeric cases (though also zero, which isn't a relevant\n  // port number).\n  return Number(\n             goog.uri.utils.getComponentByIndex_(\n                 goog.uri.utils.ComponentIndex.PORT, uri)) ||\n      null;\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The path still encoded, or null if none. Includes the\n *     leading slash, if any.\n */\ngoog.uri.utils.getPathEncoded = function(uri) {\n  return goog.uri.utils.getComponentByIndex_(\n      goog.uri.utils.ComponentIndex.PATH, uri);\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The decoded path, or null if none.  Includes the leading\n *     slash, if any.\n */\ngoog.uri.utils.getPath = function(uri) {\n  return goog.uri.utils.decodeIfPossible_(\n      goog.uri.utils.getPathEncoded(uri), true /* opt_preserveReserved */);\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The query data still encoded, or null if none.  Does not\n *     include the question mark itself.\n */\ngoog.uri.utils.getQueryData = function(uri) {\n  return goog.uri.utils.getComponentByIndex_(\n      goog.uri.utils.ComponentIndex.QUERY_DATA, uri);\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The fragment identifier, or null if none.  Does not\n *     include the hash mark itself.\n */\ngoog.uri.utils.getFragmentEncoded = function(uri) {\n  // The hash mark may not appear in any other part of the URL.\n  var hashIndex = uri.indexOf('#');\n  return hashIndex < 0 ? null : uri.substr(hashIndex + 1);\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @param {?string} fragment The encoded fragment identifier, or null if none.\n *     Does not include the hash mark itself.\n * @return {string} The URI with the fragment set.\n */\ngoog.uri.utils.setFragmentEncoded = function(uri, fragment) {\n  return goog.uri.utils.removeFragment(uri) + (fragment ? '#' + fragment : '');\n};\n\n\n/**\n * @param {string} uri The URI to examine.\n * @return {?string} The decoded fragment identifier, or null if none.  Does\n *     not include the hash mark.\n */\ngoog.uri.utils.getFragment = function(uri) {\n  return goog.uri.utils.decodeIfPossible_(\n      goog.uri.utils.getFragmentEncoded(uri));\n};\n\n\n/**\n * Extracts everything up to the port of the URI.\n * @param {string} uri The URI string.\n * @return {string} Everything up to and including the port.\n */\ngoog.uri.utils.getHost = function(uri) {\n  var pieces = goog.uri.utils.split(uri);\n  return goog.uri.utils.buildFromEncodedParts(\n      pieces[goog.uri.utils.ComponentIndex.SCHEME],\n      pieces[goog.uri.utils.ComponentIndex.USER_INFO],\n      pieces[goog.uri.utils.ComponentIndex.DOMAIN],\n      pieces[goog.uri.utils.ComponentIndex.PORT]);\n};\n\n\n/**\n * Returns the origin for a given URL.\n * @param {string} uri The URI string.\n * @return {string} Everything up to and including the port.\n */\ngoog.uri.utils.getOrigin = function(uri) {\n  var pieces = goog.uri.utils.split(uri);\n  return goog.uri.utils.buildFromEncodedParts(\n      pieces[goog.uri.utils.ComponentIndex.SCHEME], null /* opt_userInfo */,\n      pieces[goog.uri.utils.ComponentIndex.DOMAIN],\n      pieces[goog.uri.utils.ComponentIndex.PORT]);\n};\n\n\n/**\n * Extracts the path of the URL and everything after.\n * @param {string} uri The URI string.\n * @return {string} The URI, starting at the path and including the query\n *     parameters and fragment identifier.\n */\ngoog.uri.utils.getPathAndAfter = function(uri) {\n  var pieces = goog.uri.utils.split(uri);\n  return goog.uri.utils.buildFromEncodedParts(\n      null, null, null, null, pieces[goog.uri.utils.ComponentIndex.PATH],\n      pieces[goog.uri.utils.ComponentIndex.QUERY_DATA],\n      pieces[goog.uri.utils.ComponentIndex.FRAGMENT]);\n};\n\n\n/**\n * Gets the URI with the fragment identifier removed.\n * @param {string} uri The URI to examine.\n * @return {string} Everything preceding the hash mark.\n */\ngoog.uri.utils.removeFragment = function(uri) {\n  // The hash mark may not appear in any other part of the URL.\n  var hashIndex = uri.indexOf('#');\n  return hashIndex < 0 ? uri : uri.substr(0, hashIndex);\n};\n\n\n/**\n * Ensures that two URI's have the exact same domain, scheme, and port.\n *\n * Unlike the version in goog.Uri, this checks protocol, and therefore is\n * suitable for checking against the browser's same-origin policy.\n *\n * @param {string} uri1 The first URI.\n * @param {string} uri2 The second URI.\n * @return {boolean} Whether they have the same scheme, domain and port.\n */\ngoog.uri.utils.haveSameDomain = function(uri1, uri2) {\n  var pieces1 = goog.uri.utils.split(uri1);\n  var pieces2 = goog.uri.utils.split(uri2);\n  return pieces1[goog.uri.utils.ComponentIndex.DOMAIN] ==\n      pieces2[goog.uri.utils.ComponentIndex.DOMAIN] &&\n      pieces1[goog.uri.utils.ComponentIndex.SCHEME] ==\n      pieces2[goog.uri.utils.ComponentIndex.SCHEME] &&\n      pieces1[goog.uri.utils.ComponentIndex.PORT] ==\n      pieces2[goog.uri.utils.ComponentIndex.PORT];\n};\n\n\n/**\n * Asserts that there are no fragment or query identifiers, only in uncompiled\n * mode.\n * @param {string} uri The URI to examine.\n * @private\n */\ngoog.uri.utils.assertNoFragmentsOrQueries_ = function(uri) {\n  goog.asserts.assert(\n      uri.indexOf('#') < 0 && uri.indexOf('?') < 0,\n      'goog.uri.utils: Fragment or query identifiers are not supported: [%s]',\n      uri);\n};\n\n\n/**\n * Supported query parameter values by the parameter serializing utilities.\n *\n * If a value is null or undefined, the key-value pair is skipped, as an easy\n * way to omit parameters conditionally.  Non-array parameters are converted\n * to a string and URI encoded.  Array values are expanded into multiple\n * &key=value pairs, with each element stringized and URI-encoded.\n *\n * @typedef {*}\n */\ngoog.uri.utils.QueryValue;\n\n\n/**\n * An array representing a set of query parameters with alternating keys\n * and values.\n *\n * Keys are assumed to be URI encoded already and live at even indices.  See\n * goog.uri.utils.QueryValue for details on how parameter values are encoded.\n *\n * Example:\n * <pre>\n * var data = [\n *   // Simple param: ?name=BobBarker\n *   'name', 'BobBarker',\n *   // Conditional param -- may be omitted entirely.\n *   'specialDietaryNeeds', hasDietaryNeeds() ? getDietaryNeeds() : null,\n *   // Multi-valued param: &house=LosAngeles&house=NewYork&house=null\n *   'house', ['LosAngeles', 'NewYork', null]\n * ];\n * </pre>\n *\n * @typedef {!Array<string|goog.uri.utils.QueryValue>}\n */\ngoog.uri.utils.QueryArray;\n\n\n/**\n * Parses encoded query parameters and calls callback function for every\n * parameter found in the string.\n *\n * Missing value of parameter (e.g. “…&key&…”) is treated as if the value was an\n * empty string.  Keys may be empty strings (e.g. “…&=value&…”) which also means\n * that “…&=&…” and “…&&…” will result in an empty key and value.\n *\n * @param {string} encodedQuery Encoded query string excluding question mark at\n *     the beginning.\n * @param {function(string, string)} callback Function called for every\n *     parameter found in query string.  The first argument (name) will not be\n *     urldecoded (so the function is consistent with buildQueryData), but the\n *     second will.  If the parameter has no value (i.e. “=” was not present)\n *     the second argument (value) will be an empty string.\n */\ngoog.uri.utils.parseQueryData = function(encodedQuery, callback) {\n  if (!encodedQuery) {\n    return;\n  }\n  var pairs = encodedQuery.split('&');\n  for (var i = 0; i < pairs.length; i++) {\n    var indexOfEquals = pairs[i].indexOf('=');\n    var name = null;\n    var value = null;\n    if (indexOfEquals >= 0) {\n      name = pairs[i].substring(0, indexOfEquals);\n      value = pairs[i].substring(indexOfEquals + 1);\n    } else {\n      name = pairs[i];\n    }\n    callback(name, value ? goog.string.urlDecode(value) : '');\n  }\n};\n\n\n/**\n * Split the URI into 3 parts where the [1] is the queryData without a leading\n * '?'. For example, the URI http://foo.com/bar?a=b#abc returns\n * ['http://foo.com/bar','a=b','#abc'].\n * @param {string} uri The URI to parse.\n * @return {!Array<string>} An array representation of uri of length 3 where the\n *     middle value is the queryData without a leading '?'.\n * @private\n */\ngoog.uri.utils.splitQueryData_ = function(uri) {\n  // Find the query data and hash.\n  var hashIndex = uri.indexOf('#');\n  if (hashIndex < 0) {\n    hashIndex = uri.length;\n  }\n  var questionIndex = uri.indexOf('?');\n  var queryData;\n  if (questionIndex < 0 || questionIndex > hashIndex) {\n    questionIndex = hashIndex;\n    queryData = '';\n  } else {\n    queryData = uri.substring(questionIndex + 1, hashIndex);\n  }\n  return [uri.substr(0, questionIndex), queryData, uri.substr(hashIndex)];\n};\n\n\n/**\n * Join an array created by splitQueryData_ back into a URI.\n * @param {!Array<string>} parts A URI in the form generated by splitQueryData_.\n * @return {string} The joined URI.\n * @private\n */\ngoog.uri.utils.joinQueryData_ = function(parts) {\n  return parts[0] + (parts[1] ? '?' + parts[1] : '') + parts[2];\n};\n\n\n/**\n * @param {string} queryData\n * @param {string} newData\n * @return {string}\n * @private\n */\ngoog.uri.utils.appendQueryData_ = function(queryData, newData) {\n  if (!newData) {\n    return queryData;\n  }\n  return queryData ? queryData + '&' + newData : newData;\n};\n\n\n/**\n * @param {string} uri\n * @param {string} queryData\n * @return {string}\n * @private\n */\ngoog.uri.utils.appendQueryDataToUri_ = function(uri, queryData) {\n  if (!queryData) {\n    return uri;\n  }\n  var parts = goog.uri.utils.splitQueryData_(uri);\n  parts[1] = goog.uri.utils.appendQueryData_(parts[1], queryData);\n  return goog.uri.utils.joinQueryData_(parts);\n};\n\n\n/**\n * Appends key=value pairs to an array, supporting multi-valued objects.\n * @param {*} key The key prefix.\n * @param {goog.uri.utils.QueryValue} value The value to serialize.\n * @param {!Array<string>} pairs The array to which the 'key=value' strings\n *     should be appended.\n * @private\n */\ngoog.uri.utils.appendKeyValuePairs_ = function(key, value, pairs) {\n  goog.asserts.assertString(key);\n  if (Array.isArray(value)) {\n    // Convince the compiler it's an array.\n    goog.asserts.assertArray(value);\n    for (var j = 0; j < value.length; j++) {\n      // Convert to string explicitly, to short circuit the null and array\n      // logic in this function -- this ensures that null and undefined get\n      // written as literal 'null' and 'undefined', and arrays don't get\n      // expanded out but instead encoded in the default way.\n      goog.uri.utils.appendKeyValuePairs_(key, String(value[j]), pairs);\n    }\n  } else if (value != null) {\n    // Skip a top-level null or undefined entirely.\n    pairs.push(\n        key +\n        // Check for empty string. Zero gets encoded into the url as literal\n        // strings.  For empty string, skip the equal sign, to be consistent\n        // with UriBuilder.java.\n        (value === '' ? '' : '=' + goog.string.urlEncode(value)));\n  }\n};\n\n\n/**\n * Builds a query data string from a sequence of alternating keys and values.\n * Currently generates \"&key&\" for empty args.\n *\n * @param {!IArrayLike<string|goog.uri.utils.QueryValue>} keysAndValues\n *     Alternating keys and values. See the QueryArray typedef.\n * @param {number=} opt_startIndex A start offset into the arary, defaults to 0.\n * @return {string} The encoded query string, in the form 'a=1&b=2'.\n */\ngoog.uri.utils.buildQueryData = function(keysAndValues, opt_startIndex) {\n  goog.asserts.assert(\n      Math.max(keysAndValues.length - (opt_startIndex || 0), 0) % 2 == 0,\n      'goog.uri.utils: Key/value lists must be even in length.');\n\n  var params = [];\n  for (var i = opt_startIndex || 0; i < keysAndValues.length; i += 2) {\n    var key = /** @type {string} */ (keysAndValues[i]);\n    goog.uri.utils.appendKeyValuePairs_(key, keysAndValues[i + 1], params);\n  }\n  return params.join('&');\n};\n\n\n/**\n * Builds a query data string from a map.\n * Currently generates \"&key&\" for empty args.\n *\n * @param {!Object<string, goog.uri.utils.QueryValue>} map An object where keys\n *     are URI-encoded parameter keys, and the values are arbitrary types\n *     or arrays. Keys with a null value are dropped.\n * @return {string} The encoded query string, in the form 'a=1&b=2'.\n */\ngoog.uri.utils.buildQueryDataFromMap = function(map) {\n  var params = [];\n  for (var key in map) {\n    goog.uri.utils.appendKeyValuePairs_(key, map[key], params);\n  }\n  return params.join('&');\n};\n\n\n/**\n * Appends URI parameters to an existing URI.\n *\n * The variable arguments may contain alternating keys and values.  Keys are\n * assumed to be already URI encoded.  The values should not be URI-encoded,\n * and will instead be encoded by this function.\n * <pre>\n * appendParams('http://www.foo.com?existing=true',\n *     'key1', 'value1',\n *     'key2', 'value?willBeEncoded',\n *     'key3', ['valueA', 'valueB', 'valueC'],\n *     'key4', null);\n * result: 'http://www.foo.com?existing=true&' +\n *     'key1=value1&' +\n *     'key2=value%3FwillBeEncoded&' +\n *     'key3=valueA&key3=valueB&key3=valueC'\n * </pre>\n *\n * A single call to this function will not exhibit quadratic behavior in IE,\n * whereas multiple repeated calls may, although the effect is limited by\n * fact that URL's generally can't exceed 2kb.\n *\n * @param {string} uri The original URI, which may already have query data.\n * @param {...(goog.uri.utils.QueryArray|goog.uri.utils.QueryValue)}\n * var_args\n *     An array or argument list conforming to goog.uri.utils.QueryArray.\n * @return {string} The URI with all query parameters added.\n */\ngoog.uri.utils.appendParams = function(uri, var_args) {\n  var queryData = arguments.length == 2 ?\n      goog.uri.utils.buildQueryData(arguments[1], 0) :\n      goog.uri.utils.buildQueryData(arguments, 1);\n  return goog.uri.utils.appendQueryDataToUri_(uri, queryData);\n};\n\n\n/**\n * Appends query parameters from a map.\n *\n * @param {string} uri The original URI, which may already have query data.\n * @param {!Object<goog.uri.utils.QueryValue>} map An object where keys are\n *     URI-encoded parameter keys, and the values are arbitrary types or arrays.\n *     Keys with a null value are dropped.\n * @return {string} The new parameters.\n */\ngoog.uri.utils.appendParamsFromMap = function(uri, map) {\n  var queryData = goog.uri.utils.buildQueryDataFromMap(map);\n  return goog.uri.utils.appendQueryDataToUri_(uri, queryData);\n};\n\n\n/**\n * Appends a single URI parameter.\n *\n * Repeated calls to this can exhibit quadratic behavior in IE6 due to the\n * way string append works, though it should be limited given the 2kb limit.\n *\n * @param {string} uri The original URI, which may already have query data.\n * @param {string} key The key, which must already be URI encoded.\n * @param {*=} opt_value The value, which will be stringized and encoded\n *     (assumed not already to be encoded).  If omitted, undefined, or null, the\n *     key will be added as a valueless parameter.\n * @return {string} The URI with the query parameter added.\n */\ngoog.uri.utils.appendParam = function(uri, key, opt_value) {\n  var value = (opt_value != null) ? '=' + goog.string.urlEncode(opt_value) : '';\n  return goog.uri.utils.appendQueryDataToUri_(uri, key + value);\n};\n\n\n/**\n * Finds the next instance of a query parameter with the specified name.\n *\n * Does not instantiate any objects.\n *\n * @param {string} uri The URI to search.  May contain a fragment identifier\n *     if opt_hashIndex is specified.\n * @param {number} startIndex The index to begin searching for the key at.  A\n *     match may be found even if this is one character after the ampersand.\n * @param {string} keyEncoded The URI-encoded key.\n * @param {number} hashOrEndIndex Index to stop looking at.  If a hash\n *     mark is present, it should be its index, otherwise it should be the\n *     length of the string.\n * @return {number} The position of the first character in the key's name,\n *     immediately after either a question mark or a dot.\n * @private\n */\ngoog.uri.utils.findParam_ = function(\n    uri, startIndex, keyEncoded, hashOrEndIndex) {\n  var index = startIndex;\n  var keyLength = keyEncoded.length;\n\n  // Search for the key itself and post-filter for surronuding punctuation,\n  // rather than expensively building a regexp.\n  while ((index = uri.indexOf(keyEncoded, index)) >= 0 &&\n         index < hashOrEndIndex) {\n    var precedingChar = uri.charCodeAt(index - 1);\n    // Ensure that the preceding character is '&' or '?'.\n    if (precedingChar == goog.uri.utils.CharCode_.AMPERSAND ||\n        precedingChar == goog.uri.utils.CharCode_.QUESTION) {\n      // Ensure the following character is '&', '=', '#', or NaN\n      // (end of string).\n      var followingChar = uri.charCodeAt(index + keyLength);\n      if (!followingChar || followingChar == goog.uri.utils.CharCode_.EQUAL ||\n          followingChar == goog.uri.utils.CharCode_.AMPERSAND ||\n          followingChar == goog.uri.utils.CharCode_.HASH) {\n        return index;\n      }\n    }\n    index += keyLength + 1;\n  }\n\n  return -1;\n};\n\n\n/**\n * Regular expression for finding a hash mark or end of string.\n * @type {RegExp}\n * @private\n */\ngoog.uri.utils.hashOrEndRe_ = /#|$/;\n\n\n/**\n * Determines if the URI contains a specific key.\n *\n * Performs no object instantiations.\n *\n * @param {string} uri The URI to process.  May contain a fragment\n *     identifier.\n * @param {string} keyEncoded The URI-encoded key.  Case-sensitive.\n * @return {boolean} Whether the key is present.\n */\ngoog.uri.utils.hasParam = function(uri, keyEncoded) {\n  return goog.uri.utils.findParam_(\n             uri, 0, keyEncoded, uri.search(goog.uri.utils.hashOrEndRe_)) >= 0;\n};\n\n\n/**\n * Gets the first value of a query parameter.\n * @param {string} uri The URI to process.  May contain a fragment.\n * @param {string} keyEncoded The URI-encoded key.  Case-sensitive.\n * @return {?string} The first value of the parameter (URI-decoded), or null\n *     if the parameter is not found.\n */\ngoog.uri.utils.getParamValue = function(uri, keyEncoded) {\n  var hashOrEndIndex = uri.search(goog.uri.utils.hashOrEndRe_);\n  var foundIndex =\n      goog.uri.utils.findParam_(uri, 0, keyEncoded, hashOrEndIndex);\n\n  if (foundIndex < 0) {\n    return null;\n  } else {\n    var endPosition = uri.indexOf('&', foundIndex);\n    if (endPosition < 0 || endPosition > hashOrEndIndex) {\n      endPosition = hashOrEndIndex;\n    }\n    // Progress forth to the end of the \"key=\" or \"key&\" substring.\n    foundIndex += keyEncoded.length + 1;\n    // Use substr, because it (unlike substring) will return empty string\n    // if foundIndex > endPosition.\n    return goog.string.urlDecode(\n        uri.substr(foundIndex, endPosition - foundIndex));\n  }\n};\n\n\n/**\n * Gets all values of a query parameter.\n * @param {string} uri The URI to process.  May contain a fragment.\n * @param {string} keyEncoded The URI-encoded key.  Case-sensitive.\n * @return {!Array<string>} All URI-decoded values with the given key.\n *     If the key is not found, this will have length 0, but never be null.\n */\ngoog.uri.utils.getParamValues = function(uri, keyEncoded) {\n  var hashOrEndIndex = uri.search(goog.uri.utils.hashOrEndRe_);\n  var position = 0;\n  var foundIndex;\n  var result = [];\n\n  while ((foundIndex = goog.uri.utils.findParam_(\n              uri, position, keyEncoded, hashOrEndIndex)) >= 0) {\n    // Find where this parameter ends, either the '&' or the end of the\n    // query parameters.\n    position = uri.indexOf('&', foundIndex);\n    if (position < 0 || position > hashOrEndIndex) {\n      position = hashOrEndIndex;\n    }\n\n    // Progress forth to the end of the \"key=\" or \"key&\" substring.\n    foundIndex += keyEncoded.length + 1;\n    // Use substr, because it (unlike substring) will return empty string\n    // if foundIndex > position.\n    result.push(\n        goog.string.urlDecode(uri.substr(foundIndex, position - foundIndex)));\n  }\n\n  return result;\n};\n\n\n/**\n * Regexp to find trailing question marks and ampersands.\n * @type {RegExp}\n * @private\n */\ngoog.uri.utils.trailingQueryPunctuationRe_ = /[?&]($|#)/;\n\n\n/**\n * Removes all instances of a query parameter.\n * @param {string} uri The URI to process.  Must not contain a fragment.\n * @param {string} keyEncoded The URI-encoded key.\n * @return {string} The URI with all instances of the parameter removed.\n */\ngoog.uri.utils.removeParam = function(uri, keyEncoded) {\n  var hashOrEndIndex = uri.search(goog.uri.utils.hashOrEndRe_);\n  var position = 0;\n  var foundIndex;\n  var buffer = [];\n\n  // Look for a query parameter.\n  while ((foundIndex = goog.uri.utils.findParam_(\n              uri, position, keyEncoded, hashOrEndIndex)) >= 0) {\n    // Get the portion of the query string up to, but not including, the ?\n    // or & starting the parameter.\n    buffer.push(uri.substring(position, foundIndex));\n    // Progress to immediately after the '&'.  If not found, go to the end.\n    // Avoid including the hash mark.\n    position = Math.min(\n        (uri.indexOf('&', foundIndex) + 1) || hashOrEndIndex, hashOrEndIndex);\n  }\n\n  // Append everything that is remaining.\n  buffer.push(uri.substr(position));\n\n  // Join the buffer, and remove trailing punctuation that remains.\n  return buffer.join('').replace(\n      goog.uri.utils.trailingQueryPunctuationRe_, '$1');\n};\n\n\n/**\n * Replaces all existing definitions of a parameter with a single definition.\n *\n * Repeated calls to this can exhibit quadratic behavior due to the need to\n * find existing instances and reconstruct the string, though it should be\n * limited given the 2kb limit.  Consider using appendParams or setParamsFromMap\n * to update multiple parameters in bulk.\n *\n * @param {string} uri The original URI, which may already have query data.\n * @param {string} keyEncoded The key, which must already be URI encoded.\n * @param {*} value The value, which will be stringized and encoded (assumed\n *     not already to be encoded).\n * @return {string} The URI with the query parameter added.\n */\ngoog.uri.utils.setParam = function(uri, keyEncoded, value) {\n  return goog.uri.utils.appendParam(\n      goog.uri.utils.removeParam(uri, keyEncoded), keyEncoded, value);\n};\n\n\n/**\n * Effeciently set or remove multiple query parameters in a URI. Order of\n * unchanged parameters will not be modified, all updated parameters will be\n * appended to the end of the query. Params with values of null or undefined are\n * removed.\n *\n * @param {string} uri The URI to process.\n * @param {!Object<string, goog.uri.utils.QueryValue>} params A list of\n *     parameters to update. If null or undefined, the param will be removed.\n * @return {string} An updated URI where the query data has been updated with\n *     the params.\n */\ngoog.uri.utils.setParamsFromMap = function(uri, params) {\n  var parts = goog.uri.utils.splitQueryData_(uri);\n  var queryData = parts[1];\n  var buffer = [];\n  if (queryData) {\n    queryData.split('&').forEach(function(pair) {\n      var indexOfEquals = pair.indexOf('=');\n      var name = indexOfEquals >= 0 ? pair.substr(0, indexOfEquals) : pair;\n      if (!params.hasOwnProperty(name)) {\n        buffer.push(pair);\n      }\n    });\n  }\n  parts[1] = goog.uri.utils.appendQueryData_(\n      buffer.join('&'), goog.uri.utils.buildQueryDataFromMap(params));\n  return goog.uri.utils.joinQueryData_(parts);\n};\n\n\n/**\n * Generates a URI path using a given URI and a path with checks to\n * prevent consecutive \"//\". The baseUri passed in must not contain\n * query or fragment identifiers. The path to append may not contain query or\n * fragment identifiers.\n *\n * @param {string} baseUri URI to use as the base.\n * @param {string} path Path to append.\n * @return {string} Updated URI.\n */\ngoog.uri.utils.appendPath = function(baseUri, path) {\n  goog.uri.utils.assertNoFragmentsOrQueries_(baseUri);\n\n  // Remove any trailing '/'\n  if (goog.string.endsWith(baseUri, '/')) {\n    baseUri = baseUri.substr(0, baseUri.length - 1);\n  }\n  // Remove any leading '/'\n  if (goog.string.startsWith(path, '/')) {\n    path = path.substr(1);\n  }\n  return '' + baseUri + '/' + path;\n};\n\n\n/**\n * Replaces the path.\n * @param {string} uri URI to use as the base.\n * @param {string} path New path.\n * @return {string} Updated URI.\n */\ngoog.uri.utils.setPath = function(uri, path) {\n  // Add any missing '/'.\n  if (!goog.string.startsWith(path, '/')) {\n    path = '/' + path;\n  }\n  var parts = goog.uri.utils.split(uri);\n  return goog.uri.utils.buildFromEncodedParts(\n      parts[goog.uri.utils.ComponentIndex.SCHEME],\n      parts[goog.uri.utils.ComponentIndex.USER_INFO],\n      parts[goog.uri.utils.ComponentIndex.DOMAIN],\n      parts[goog.uri.utils.ComponentIndex.PORT], path,\n      parts[goog.uri.utils.ComponentIndex.QUERY_DATA],\n      parts[goog.uri.utils.ComponentIndex.FRAGMENT]);\n};\n\n\n/**\n * Standard supported query parameters.\n * @enum {string}\n */\ngoog.uri.utils.StandardQueryParam = {\n\n  /** Unused parameter for unique-ifying. */\n  RANDOM: 'zx'\n};\n\n\n/**\n * Sets the zx parameter of a URI to a random value.\n * @param {string} uri Any URI.\n * @return {string} That URI with the \"zx\" parameter added or replaced to\n *     contain a random string.\n */\ngoog.uri.utils.makeUnique = function(uri) {\n  return goog.uri.utils.setParam(\n      uri, goog.uri.utils.StandardQueryParam.RANDOM,\n      goog.string.getRandomString());\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Class for parsing and formatting URIs.\n *\n * Use goog.Uri(string) to parse a URI string.  Use goog.Uri.create(...) to\n * create a new instance of the goog.Uri object from Uri parts.\n *\n * e.g: <code>var myUri = new goog.Uri(window.location);</code>\n *\n * Implements RFC 3986 for parsing/formatting URIs.\n * http://www.ietf.org/rfc/rfc3986.txt\n *\n * Some changes have been made to the interface (more like .NETs), though the\n * internal representation is now of un-encoded parts, this will change the\n * behavior slightly.\n */\n\ngoog.provide('goog.Uri');\ngoog.provide('goog.Uri.QueryData');\n\ngoog.require('goog.array');\ngoog.require('goog.asserts');\ngoog.require('goog.string');\ngoog.require('goog.structs');\ngoog.require('goog.structs.Map');\ngoog.require('goog.uri.utils');\ngoog.require('goog.uri.utils.ComponentIndex');\ngoog.require('goog.uri.utils.StandardQueryParam');\n\n\n\n/**\n * This class contains setters and getters for the parts of the URI.\n * The <code>getXyz</code>/<code>setXyz</code> methods return the decoded part\n * -- so<code>goog.Uri.parse('/foo%20bar').getPath()</code> will return the\n * decoded path, <code>/foo bar</code>.\n *\n * Reserved characters (see RFC 3986 section 2.2) can be present in\n * their percent-encoded form in scheme, domain, and path URI components and\n * will not be auto-decoded. For example:\n * <code>goog.Uri.parse('rel%61tive/path%2fto/resource').getPath()</code> will\n * return <code>relative/path%2fto/resource</code>.\n *\n * The constructor accepts an optional unparsed, raw URI string.  The parser\n * is relaxed, so special characters that aren't escaped but don't cause\n * ambiguities will not cause parse failures.\n *\n * All setters return <code>this</code> and so may be chained, a la\n * <code>goog.Uri.parse('/foo').setFragment('part').toString()</code>.\n *\n * @param {*=} opt_uri Optional string URI to parse\n *        (use goog.Uri.create() to create a URI from parts), or if\n *        a goog.Uri is passed, a clone is created.\n * @param {boolean=} opt_ignoreCase If true, #getParameterValue will ignore\n * the case of the parameter name.\n *\n * @throws URIError If opt_uri is provided and URI is malformed (that is,\n *     if decodeURIComponent fails on any of the URI components).\n * @constructor\n * @struct\n */\ngoog.Uri = function(opt_uri, opt_ignoreCase) {\n  /**\n   * Scheme such as \"http\".\n   * @private {string}\n   */\n  this.scheme_ = '';\n\n  /**\n   * User credentials in the form \"username:password\".\n   * @private {string}\n   */\n  this.userInfo_ = '';\n\n  /**\n   * Domain part, e.g. \"www.google.com\".\n   * @private {string}\n   */\n  this.domain_ = '';\n\n  /**\n   * Port, e.g. 8080.\n   * @private {?number}\n   */\n  this.port_ = null;\n\n  /**\n   * Path, e.g. \"/tests/img.png\".\n   * @private {string}\n   */\n  this.path_ = '';\n\n  /**\n   * The fragment without the #.\n   * @private {string}\n   */\n  this.fragment_ = '';\n\n  /**\n   * Whether or not this Uri should be treated as Read Only.\n   * @private {boolean}\n   */\n  this.isReadOnly_ = false;\n\n  /**\n   * Whether or not to ignore case when comparing query params.\n   * @private {boolean}\n   */\n  this.ignoreCase_ = false;\n\n  /**\n   * Object representing query data.\n   * @private {!goog.Uri.QueryData}\n   */\n  this.queryData_;\n\n  // Parse in the uri string\n  var m;\n  if (opt_uri instanceof goog.Uri) {\n    this.ignoreCase_ = (opt_ignoreCase !== undefined) ? opt_ignoreCase :\n                                                        opt_uri.getIgnoreCase();\n    this.setScheme(opt_uri.getScheme());\n    this.setUserInfo(opt_uri.getUserInfo());\n    this.setDomain(opt_uri.getDomain());\n    this.setPort(opt_uri.getPort());\n    this.setPath(opt_uri.getPath());\n    this.setQueryData(opt_uri.getQueryData().clone());\n    this.setFragment(opt_uri.getFragment());\n  } else if (opt_uri && (m = goog.uri.utils.split(String(opt_uri)))) {\n    this.ignoreCase_ = !!opt_ignoreCase;\n\n    // Set the parts -- decoding as we do so.\n    // COMPATIBILITY NOTE - In IE, unmatched fields may be empty strings,\n    // whereas in other browsers they will be undefined.\n    this.setScheme(m[goog.uri.utils.ComponentIndex.SCHEME] || '', true);\n    this.setUserInfo(m[goog.uri.utils.ComponentIndex.USER_INFO] || '', true);\n    this.setDomain(m[goog.uri.utils.ComponentIndex.DOMAIN] || '', true);\n    this.setPort(m[goog.uri.utils.ComponentIndex.PORT]);\n    this.setPath(m[goog.uri.utils.ComponentIndex.PATH] || '', true);\n    this.setQueryData(m[goog.uri.utils.ComponentIndex.QUERY_DATA] || '', true);\n    this.setFragment(m[goog.uri.utils.ComponentIndex.FRAGMENT] || '', true);\n\n  } else {\n    this.ignoreCase_ = !!opt_ignoreCase;\n    this.queryData_ = new goog.Uri.QueryData(null, this.ignoreCase_);\n  }\n};\n\n\n/**\n * Parameter name added to stop caching.\n * @type {string}\n */\ngoog.Uri.RANDOM_PARAM = goog.uri.utils.StandardQueryParam.RANDOM;\n\n\n/**\n * @return {string} The string form of the url.\n * @override\n */\ngoog.Uri.prototype.toString = function() {\n  var out = [];\n\n  var scheme = this.getScheme();\n  if (scheme) {\n    out.push(\n        goog.Uri.encodeSpecialChars_(\n            scheme, goog.Uri.reDisallowedInSchemeOrUserInfo_, true),\n        ':');\n  }\n\n  var domain = this.getDomain();\n  if (domain || scheme == 'file') {\n    out.push('//');\n\n    var userInfo = this.getUserInfo();\n    if (userInfo) {\n      out.push(\n          goog.Uri.encodeSpecialChars_(\n              userInfo, goog.Uri.reDisallowedInSchemeOrUserInfo_, true),\n          '@');\n    }\n\n    out.push(goog.Uri.removeDoubleEncoding_(goog.string.urlEncode(domain)));\n\n    var port = this.getPort();\n    if (port != null) {\n      out.push(':', String(port));\n    }\n  }\n\n  var path = this.getPath();\n  if (path) {\n    if (this.hasDomain() && path.charAt(0) != '/') {\n      out.push('/');\n    }\n    out.push(goog.Uri.encodeSpecialChars_(\n        path,\n        path.charAt(0) == '/' ? goog.Uri.reDisallowedInAbsolutePath_ :\n                                goog.Uri.reDisallowedInRelativePath_,\n        true));\n  }\n\n  var query = this.getEncodedQuery();\n  if (query) {\n    out.push('?', query);\n  }\n\n  var fragment = this.getFragment();\n  if (fragment) {\n    out.push(\n        '#',\n        goog.Uri.encodeSpecialChars_(\n            fragment, goog.Uri.reDisallowedInFragment_));\n  }\n  return out.join('');\n};\n\n\n/**\n * Resolves the given relative URI (a goog.Uri object), using the URI\n * represented by this instance as the base URI.\n *\n * There are several kinds of relative URIs:<br>\n * 1. foo - replaces the last part of the path, the whole query and fragment<br>\n * 2. /foo - replaces the path, the query and fragment<br>\n * 3. //foo - replaces everything from the domain on.  foo is a domain name<br>\n * 4. ?foo - replace the query and fragment<br>\n * 5. #foo - replace the fragment only\n *\n * Additionally, if relative URI has a non-empty path, all \"..\" and \".\"\n * segments will be resolved, as described in RFC 3986.\n *\n * @param {!goog.Uri} relativeUri The relative URI to resolve.\n * @return {!goog.Uri} The resolved URI.\n */\ngoog.Uri.prototype.resolve = function(relativeUri) {\n  var absoluteUri = this.clone();\n\n  // we satisfy these conditions by looking for the first part of relativeUri\n  // that is not blank and applying defaults to the rest\n\n  var overridden = relativeUri.hasScheme();\n\n  if (overridden) {\n    absoluteUri.setScheme(relativeUri.getScheme());\n  } else {\n    overridden = relativeUri.hasUserInfo();\n  }\n\n  if (overridden) {\n    absoluteUri.setUserInfo(relativeUri.getUserInfo());\n  } else {\n    overridden = relativeUri.hasDomain();\n  }\n\n  if (overridden) {\n    absoluteUri.setDomain(relativeUri.getDomain());\n  } else {\n    overridden = relativeUri.hasPort();\n  }\n\n  var path = relativeUri.getPath();\n  if (overridden) {\n    absoluteUri.setPort(relativeUri.getPort());\n  } else {\n    overridden = relativeUri.hasPath();\n    if (overridden) {\n      // resolve path properly\n      if (path.charAt(0) != '/') {\n        // path is relative\n        if (this.hasDomain() && !this.hasPath()) {\n          // RFC 3986, section 5.2.3, case 1\n          path = '/' + path;\n        } else {\n          // RFC 3986, section 5.2.3, case 2\n          var lastSlashIndex = absoluteUri.getPath().lastIndexOf('/');\n          if (lastSlashIndex != -1) {\n            path = absoluteUri.getPath().substr(0, lastSlashIndex + 1) + path;\n          }\n        }\n      }\n      path = goog.Uri.removeDotSegments(path);\n    }\n  }\n\n  if (overridden) {\n    absoluteUri.setPath(path);\n  } else {\n    overridden = relativeUri.hasQuery();\n  }\n\n  if (overridden) {\n    absoluteUri.setQueryData(relativeUri.getQueryData().clone());\n  } else {\n    overridden = relativeUri.hasFragment();\n  }\n\n  if (overridden) {\n    absoluteUri.setFragment(relativeUri.getFragment());\n  }\n\n  return absoluteUri;\n};\n\n\n/**\n * Clones the URI instance.\n * @return {!goog.Uri} New instance of the URI object.\n */\ngoog.Uri.prototype.clone = function() {\n  return new goog.Uri(this);\n};\n\n\n/**\n * @return {string} The encoded scheme/protocol for the URI.\n */\ngoog.Uri.prototype.getScheme = function() {\n  return this.scheme_;\n};\n\n\n/**\n * Sets the scheme/protocol.\n * @throws URIError If opt_decode is true and newScheme is malformed (that is,\n *     if decodeURIComponent fails).\n * @param {string} newScheme New scheme value.\n * @param {boolean=} opt_decode Optional param for whether to decode new value.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setScheme = function(newScheme, opt_decode) {\n  this.enforceReadOnly();\n  this.scheme_ =\n      opt_decode ? goog.Uri.decodeOrEmpty_(newScheme, true) : newScheme;\n\n  // remove an : at the end of the scheme so somebody can pass in\n  // window.location.protocol\n  if (this.scheme_) {\n    this.scheme_ = this.scheme_.replace(/:$/, '');\n  }\n  return this;\n};\n\n\n/**\n * @return {boolean} Whether the scheme has been set.\n */\ngoog.Uri.prototype.hasScheme = function() {\n  return !!this.scheme_;\n};\n\n\n/**\n * @return {string} The decoded user info.\n */\ngoog.Uri.prototype.getUserInfo = function() {\n  return this.userInfo_;\n};\n\n\n/**\n * Sets the userInfo.\n * @throws URIError If opt_decode is true and newUserInfo is malformed (that is,\n *     if decodeURIComponent fails).\n * @param {string} newUserInfo New userInfo value.\n * @param {boolean=} opt_decode Optional param for whether to decode new value.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setUserInfo = function(newUserInfo, opt_decode) {\n  this.enforceReadOnly();\n  this.userInfo_ =\n      opt_decode ? goog.Uri.decodeOrEmpty_(newUserInfo) : newUserInfo;\n  return this;\n};\n\n\n/**\n * @return {boolean} Whether the user info has been set.\n */\ngoog.Uri.prototype.hasUserInfo = function() {\n  return !!this.userInfo_;\n};\n\n\n/**\n * @return {string} The decoded domain.\n */\ngoog.Uri.prototype.getDomain = function() {\n  return this.domain_;\n};\n\n\n/**\n * Sets the domain.\n * @throws URIError If opt_decode is true and newDomain is malformed (that is,\n *     if decodeURIComponent fails).\n * @param {string} newDomain New domain value.\n * @param {boolean=} opt_decode Optional param for whether to decode new value.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setDomain = function(newDomain, opt_decode) {\n  this.enforceReadOnly();\n  this.domain_ =\n      opt_decode ? goog.Uri.decodeOrEmpty_(newDomain, true) : newDomain;\n  return this;\n};\n\n\n/**\n * @return {boolean} Whether the domain has been set.\n */\ngoog.Uri.prototype.hasDomain = function() {\n  return !!this.domain_;\n};\n\n\n/**\n * @return {?number} The port number.\n */\ngoog.Uri.prototype.getPort = function() {\n  return this.port_;\n};\n\n\n/**\n * Sets the port number.\n * @param {*} newPort Port number. Will be explicitly casted to a number.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setPort = function(newPort) {\n  this.enforceReadOnly();\n\n  if (newPort) {\n    newPort = Number(newPort);\n    if (isNaN(newPort) || newPort < 0) {\n      throw new Error('Bad port number ' + newPort);\n    }\n    this.port_ = newPort;\n  } else {\n    this.port_ = null;\n  }\n\n  return this;\n};\n\n\n/**\n * @return {boolean} Whether the port has been set.\n */\ngoog.Uri.prototype.hasPort = function() {\n  return this.port_ != null;\n};\n\n\n/**\n * @return {string} The decoded path.\n */\ngoog.Uri.prototype.getPath = function() {\n  return this.path_;\n};\n\n\n/**\n * Sets the path.\n * @throws URIError If opt_decode is true and newPath is malformed (that is,\n *     if decodeURIComponent fails).\n * @param {string} newPath New path value.\n * @param {boolean=} opt_decode Optional param for whether to decode new value.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setPath = function(newPath, opt_decode) {\n  this.enforceReadOnly();\n  this.path_ = opt_decode ? goog.Uri.decodeOrEmpty_(newPath, true) : newPath;\n  return this;\n};\n\n\n/**\n * @return {boolean} Whether the path has been set.\n */\ngoog.Uri.prototype.hasPath = function() {\n  return !!this.path_;\n};\n\n\n/**\n * @return {boolean} Whether the query string has been set.\n */\ngoog.Uri.prototype.hasQuery = function() {\n  return this.queryData_.toString() !== '';\n};\n\n\n/**\n * Sets the query data.\n * @param {goog.Uri.QueryData|string|undefined} queryData QueryData object.\n * @param {boolean=} opt_decode Optional param for whether to decode new value.\n *     Applies only if queryData is a string.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setQueryData = function(queryData, opt_decode) {\n  this.enforceReadOnly();\n\n  if (queryData instanceof goog.Uri.QueryData) {\n    this.queryData_ = queryData;\n    this.queryData_.setIgnoreCase(this.ignoreCase_);\n  } else {\n    if (!opt_decode) {\n      // QueryData accepts encoded query string, so encode it if\n      // opt_decode flag is not true.\n      queryData = goog.Uri.encodeSpecialChars_(\n          queryData, goog.Uri.reDisallowedInQuery_);\n    }\n    this.queryData_ = new goog.Uri.QueryData(queryData, this.ignoreCase_);\n  }\n\n  return this;\n};\n\n\n/**\n * Sets the URI query.\n * @param {string} newQuery New query value.\n * @param {boolean=} opt_decode Optional param for whether to decode new value.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setQuery = function(newQuery, opt_decode) {\n  return this.setQueryData(newQuery, opt_decode);\n};\n\n\n/**\n * @return {string} The encoded URI query, not including the ?.\n */\ngoog.Uri.prototype.getEncodedQuery = function() {\n  return this.queryData_.toString();\n};\n\n\n/**\n * @return {string} The decoded URI query, not including the ?.\n */\ngoog.Uri.prototype.getDecodedQuery = function() {\n  return this.queryData_.toDecodedString();\n};\n\n\n/**\n * Returns the query data.\n * @return {!goog.Uri.QueryData} QueryData object.\n */\ngoog.Uri.prototype.getQueryData = function() {\n  return this.queryData_;\n};\n\n\n/**\n * @return {string} The encoded URI query, not including the ?.\n *\n * Warning: This method, unlike other getter methods, returns encoded\n * value, instead of decoded one.\n */\ngoog.Uri.prototype.getQuery = function() {\n  return this.getEncodedQuery();\n};\n\n\n/**\n * Sets the value of the named query parameters, clearing previous values for\n * that key.\n *\n * @param {string} key The parameter to set.\n * @param {*} value The new value. Value does not need to be encoded.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setParameterValue = function(key, value) {\n  this.enforceReadOnly();\n  this.queryData_.set(key, value);\n  return this;\n};\n\n\n/**\n * Sets the values of the named query parameters, clearing previous values for\n * that key.  Not new values will currently be moved to the end of the query\n * string.\n *\n * So, <code>goog.Uri.parse('foo?a=b&c=d&e=f').setParameterValues('c', ['new'])\n * </code> yields <tt>foo?a=b&e=f&c=new</tt>.</p>\n *\n * @param {string} key The parameter to set.\n * @param {*} values The new values. If values is a single\n *     string then it will be treated as the sole value. Values do not need to\n *     be encoded.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setParameterValues = function(key, values) {\n  this.enforceReadOnly();\n\n  if (!Array.isArray(values)) {\n    values = [String(values)];\n  }\n\n  this.queryData_.setValues(key, values);\n\n  return this;\n};\n\n\n/**\n * Returns the value<b>s</b> for a given cgi parameter as a list of decoded\n * query parameter values.\n * @param {string} name The parameter to get values for.\n * @return {!Array<?>} The values for a given cgi parameter as a list of\n *     decoded query parameter values.\n */\ngoog.Uri.prototype.getParameterValues = function(name) {\n  return this.queryData_.getValues(name);\n};\n\n\n/**\n * Returns the first value for a given cgi parameter or undefined if the given\n * parameter name does not appear in the query string.\n * @param {string} paramName Unescaped parameter name.\n * @return {string|undefined} The first value for a given cgi parameter or\n *     undefined if the given parameter name does not appear in the query\n *     string.\n */\ngoog.Uri.prototype.getParameterValue = function(paramName) {\n  return /** @type {string|undefined} */ (this.queryData_.get(paramName));\n};\n\n\n/**\n * @return {string} The URI fragment, not including the #.\n */\ngoog.Uri.prototype.getFragment = function() {\n  return this.fragment_;\n};\n\n\n/**\n * Sets the URI fragment.\n * @throws URIError If opt_decode is true and newFragment is malformed (that is,\n *     if decodeURIComponent fails).\n * @param {string} newFragment New fragment value.\n * @param {boolean=} opt_decode Optional param for whether to decode new value.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.setFragment = function(newFragment, opt_decode) {\n  this.enforceReadOnly();\n  this.fragment_ =\n      opt_decode ? goog.Uri.decodeOrEmpty_(newFragment) : newFragment;\n  return this;\n};\n\n\n/**\n * @return {boolean} Whether the URI has a fragment set.\n */\ngoog.Uri.prototype.hasFragment = function() {\n  return !!this.fragment_;\n};\n\n\n/**\n * Returns true if this has the same domain as that of uri2.\n * @param {!goog.Uri} uri2 The URI object to compare to.\n * @return {boolean} true if same domain; false otherwise.\n */\ngoog.Uri.prototype.hasSameDomainAs = function(uri2) {\n  return ((!this.hasDomain() && !uri2.hasDomain()) ||\n          this.getDomain() == uri2.getDomain()) &&\n      ((!this.hasPort() && !uri2.hasPort()) ||\n       this.getPort() == uri2.getPort());\n};\n\n\n/**\n * Adds a random parameter to the Uri.\n * @return {!goog.Uri} Reference to this Uri object.\n */\ngoog.Uri.prototype.makeUnique = function() {\n  this.enforceReadOnly();\n  this.setParameterValue(goog.Uri.RANDOM_PARAM, goog.string.getRandomString());\n\n  return this;\n};\n\n\n/**\n * Removes the named query parameter.\n *\n * @param {string} key The parameter to remove.\n * @return {!goog.Uri} Reference to this URI object.\n */\ngoog.Uri.prototype.removeParameter = function(key) {\n  this.enforceReadOnly();\n  this.queryData_.remove(key);\n  return this;\n};\n\n\n/**\n * Sets whether Uri is read only. If this goog.Uri is read-only,\n * enforceReadOnly_ will be called at the start of any function that may modify\n * this Uri.\n * @param {boolean} isReadOnly whether this goog.Uri should be read only.\n * @return {!goog.Uri} Reference to this Uri object.\n */\ngoog.Uri.prototype.setReadOnly = function(isReadOnly) {\n  this.isReadOnly_ = isReadOnly;\n  return this;\n};\n\n\n/**\n * @return {boolean} Whether the URI is read only.\n */\ngoog.Uri.prototype.isReadOnly = function() {\n  return this.isReadOnly_;\n};\n\n\n/**\n * Checks if this Uri has been marked as read only, and if so, throws an error.\n * This should be called whenever any modifying function is called.\n */\ngoog.Uri.prototype.enforceReadOnly = function() {\n  if (this.isReadOnly_) {\n    throw new Error('Tried to modify a read-only Uri');\n  }\n};\n\n\n/**\n * Sets whether to ignore case.\n * NOTE: If there are already key/value pairs in the QueryData, and\n * ignoreCase_ is set to false, the keys will all be lower-cased.\n * @param {boolean} ignoreCase whether this goog.Uri should ignore case.\n * @return {!goog.Uri} Reference to this Uri object.\n */\ngoog.Uri.prototype.setIgnoreCase = function(ignoreCase) {\n  this.ignoreCase_ = ignoreCase;\n  if (this.queryData_) {\n    this.queryData_.setIgnoreCase(ignoreCase);\n  }\n  return this;\n};\n\n\n/**\n * @return {boolean} Whether to ignore case.\n */\ngoog.Uri.prototype.getIgnoreCase = function() {\n  return this.ignoreCase_;\n};\n\n\n//==============================================================================\n// Static members\n//==============================================================================\n\n\n/**\n * Creates a uri from the string form.  Basically an alias of new goog.Uri().\n * If a Uri object is passed to parse then it will return a clone of the object.\n *\n * @throws URIError If parsing the URI is malformed. The passed URI components\n *     should all be parseable by decodeURIComponent.\n * @param {*} uri Raw URI string or instance of Uri\n *     object.\n * @param {boolean=} opt_ignoreCase Whether to ignore the case of parameter\n * names in #getParameterValue.\n * @return {!goog.Uri} The new URI object.\n */\ngoog.Uri.parse = function(uri, opt_ignoreCase) {\n  return uri instanceof goog.Uri ? uri.clone() :\n                                   new goog.Uri(uri, opt_ignoreCase);\n};\n\n\n/**\n * Creates a new goog.Uri object from unencoded parts.\n *\n * @param {?string=} opt_scheme Scheme/protocol or full URI to parse.\n * @param {?string=} opt_userInfo username:password.\n * @param {?string=} opt_domain www.google.com.\n * @param {?number=} opt_port 9830.\n * @param {?string=} opt_path /some/path/to/a/file.html.\n * @param {string|goog.Uri.QueryData=} opt_query a=1&b=2.\n * @param {?string=} opt_fragment The fragment without the #.\n * @param {boolean=} opt_ignoreCase Whether to ignore parameter name case in\n *     #getParameterValue.\n *\n * @return {!goog.Uri} The new URI object.\n */\ngoog.Uri.create = function(\n    opt_scheme, opt_userInfo, opt_domain, opt_port, opt_path, opt_query,\n    opt_fragment, opt_ignoreCase) {\n  var uri = new goog.Uri(null, opt_ignoreCase);\n\n  // Only set the parts if they are defined and not empty strings.\n  opt_scheme && uri.setScheme(opt_scheme);\n  opt_userInfo && uri.setUserInfo(opt_userInfo);\n  opt_domain && uri.setDomain(opt_domain);\n  opt_port && uri.setPort(opt_port);\n  opt_path && uri.setPath(opt_path);\n  opt_query && uri.setQueryData(opt_query);\n  opt_fragment && uri.setFragment(opt_fragment);\n\n  return uri;\n};\n\n\n/**\n * Resolves a relative Uri against a base Uri, accepting both strings and\n * Uri objects.\n *\n * @param {*} base Base Uri.\n * @param {*} rel Relative Uri.\n * @return {!goog.Uri} Resolved uri.\n */\ngoog.Uri.resolve = function(base, rel) {\n  if (!(base instanceof goog.Uri)) {\n    base = goog.Uri.parse(base);\n  }\n\n  if (!(rel instanceof goog.Uri)) {\n    rel = goog.Uri.parse(rel);\n  }\n\n  return base.resolve(rel);\n};\n\n\n/**\n * Removes dot segments in given path component, as described in\n * RFC 3986, section 5.2.4.\n *\n * @param {string} path A non-empty path component.\n * @return {string} Path component with removed dot segments.\n */\ngoog.Uri.removeDotSegments = function(path) {\n  if (path == '..' || path == '.') {\n    return '';\n\n  } else if (\n      !goog.string.contains(path, './') && !goog.string.contains(path, '/.')) {\n    // This optimization detects uris which do not contain dot-segments,\n    // and as a consequence do not require any processing.\n    return path;\n\n  } else {\n    var leadingSlash = goog.string.startsWith(path, '/');\n    var segments = path.split('/');\n    var out = [];\n\n    for (var pos = 0; pos < segments.length;) {\n      var segment = segments[pos++];\n\n      if (segment == '.') {\n        if (leadingSlash && pos == segments.length) {\n          out.push('');\n        }\n      } else if (segment == '..') {\n        if (out.length > 1 || out.length == 1 && out[0] != '') {\n          out.pop();\n        }\n        if (leadingSlash && pos == segments.length) {\n          out.push('');\n        }\n      } else {\n        out.push(segment);\n        leadingSlash = true;\n      }\n    }\n\n    return out.join('/');\n  }\n};\n\n\n/**\n * Decodes a value or returns the empty string if it isn't defined or empty.\n * @throws URIError If decodeURIComponent fails to decode val.\n * @param {string|undefined} val Value to decode.\n * @param {boolean=} opt_preserveReserved If true, restricted characters will\n *     not be decoded.\n * @return {string} Decoded value.\n * @private\n */\ngoog.Uri.decodeOrEmpty_ = function(val, opt_preserveReserved) {\n  // Don't use UrlDecode() here because val is not a query parameter.\n  if (!val) {\n    return '';\n  }\n\n  // decodeURI has the same output for '%2f' and '%252f'. We double encode %25\n  // so that we can distinguish between the 2 inputs. This is later undone by\n  // removeDoubleEncoding_.\n  return opt_preserveReserved ? decodeURI(val.replace(/%25/g, '%2525')) :\n                                decodeURIComponent(val);\n};\n\n\n/**\n * If unescapedPart is non null, then escapes any characters in it that aren't\n * valid characters in a url and also escapes any special characters that\n * appear in extra.\n *\n * @param {*} unescapedPart The string to encode.\n * @param {RegExp} extra A character set of characters in [\\01-\\177].\n * @param {boolean=} opt_removeDoubleEncoding If true, remove double percent\n *     encoding.\n * @return {?string} null iff unescapedPart == null.\n * @private\n */\ngoog.Uri.encodeSpecialChars_ = function(\n    unescapedPart, extra, opt_removeDoubleEncoding) {\n  if (typeof unescapedPart === 'string') {\n    var encoded = encodeURI(unescapedPart).replace(extra, goog.Uri.encodeChar_);\n    if (opt_removeDoubleEncoding) {\n      // encodeURI double-escapes %XX sequences used to represent restricted\n      // characters in some URI components, remove the double escaping here.\n      encoded = goog.Uri.removeDoubleEncoding_(encoded);\n    }\n    return encoded;\n  }\n  return null;\n};\n\n\n/**\n * Converts a character in [\\01-\\177] to its unicode character equivalent.\n * @param {string} ch One character string.\n * @return {string} Encoded string.\n * @private\n */\ngoog.Uri.encodeChar_ = function(ch) {\n  var n = ch.charCodeAt(0);\n  return '%' + ((n >> 4) & 0xf).toString(16) + (n & 0xf).toString(16);\n};\n\n\n/**\n * Removes double percent-encoding from a string.\n * @param  {string} doubleEncodedString String\n * @return {string} String with double encoding removed.\n * @private\n */\ngoog.Uri.removeDoubleEncoding_ = function(doubleEncodedString) {\n  return doubleEncodedString.replace(/%25([0-9a-fA-F]{2})/g, '%$1');\n};\n\n\n/**\n * Regular expression for characters that are disallowed in the scheme or\n * userInfo part of the URI.\n * @type {RegExp}\n * @private\n */\ngoog.Uri.reDisallowedInSchemeOrUserInfo_ = /[#\\/\\?@]/g;\n\n\n/**\n * Regular expression for characters that are disallowed in a relative path.\n * Colon is included due to RFC 3986 3.3.\n * @type {RegExp}\n * @private\n */\ngoog.Uri.reDisallowedInRelativePath_ = /[\\#\\?:]/g;\n\n\n/**\n * Regular expression for characters that are disallowed in an absolute path.\n * @type {RegExp}\n * @private\n */\ngoog.Uri.reDisallowedInAbsolutePath_ = /[\\#\\?]/g;\n\n\n/**\n * Regular expression for characters that are disallowed in the query.\n * @type {RegExp}\n * @private\n */\ngoog.Uri.reDisallowedInQuery_ = /[\\#\\?@]/g;\n\n\n/**\n * Regular expression for characters that are disallowed in the fragment.\n * @type {RegExp}\n * @private\n */\ngoog.Uri.reDisallowedInFragment_ = /#/g;\n\n\n/**\n * Checks whether two URIs have the same domain.\n * @param {string} uri1String First URI string.\n * @param {string} uri2String Second URI string.\n * @return {boolean} true if the two URIs have the same domain; false otherwise.\n */\ngoog.Uri.haveSameDomain = function(uri1String, uri2String) {\n  // Differs from goog.uri.utils.haveSameDomain, since this ignores scheme.\n  // TODO(gboyer): Have this just call goog.uri.util.haveSameDomain.\n  var pieces1 = goog.uri.utils.split(uri1String);\n  var pieces2 = goog.uri.utils.split(uri2String);\n  return pieces1[goog.uri.utils.ComponentIndex.DOMAIN] ==\n      pieces2[goog.uri.utils.ComponentIndex.DOMAIN] &&\n      pieces1[goog.uri.utils.ComponentIndex.PORT] ==\n      pieces2[goog.uri.utils.ComponentIndex.PORT];\n};\n\n\n\n/**\n * Class used to represent URI query parameters.  It is essentially a hash of\n * name-value pairs, though a name can be present more than once.\n *\n * Has the same interface as the collections in goog.structs.\n *\n * @param {?string=} opt_query Optional encoded query string to parse into\n *     the object.\n * @param {boolean=} opt_ignoreCase If true, ignore the case of the parameter\n *     name in #get.\n * @constructor\n * @struct\n * @final\n */\ngoog.Uri.QueryData = function(opt_query, opt_ignoreCase) {\n  /**\n   * The map containing name/value or name/array-of-values pairs.\n   * May be null if it requires parsing from the query string.\n   *\n   * We need to use a Map because we cannot guarantee that the key names will\n   * not be problematic for IE.\n   *\n   * @private {?goog.structs.Map<string, !Array<*>>}\n   */\n  this.keyMap_ = null;\n\n  /**\n   * The number of params, or null if it requires computing.\n   * @private {?number}\n   */\n  this.count_ = null;\n\n  /**\n   * Encoded query string, or null if it requires computing from the key map.\n   * @private {?string}\n   */\n  this.encodedQuery_ = opt_query || null;\n\n  /**\n   * If true, ignore the case of the parameter name in #get.\n   * @private {boolean}\n   */\n  this.ignoreCase_ = !!opt_ignoreCase;\n};\n\n\n/**\n * If the underlying key map is not yet initialized, it parses the\n * query string and fills the map with parsed data.\n * @private\n */\ngoog.Uri.QueryData.prototype.ensureKeyMapInitialized_ = function() {\n  if (!this.keyMap_) {\n    this.keyMap_ = new goog.structs.Map();\n    this.count_ = 0;\n    if (this.encodedQuery_) {\n      var self = this;\n      goog.uri.utils.parseQueryData(this.encodedQuery_, function(name, value) {\n        self.add(goog.string.urlDecode(name), value);\n      });\n    }\n  }\n};\n\n\n/**\n * Creates a new query data instance from a map of names and values.\n *\n * @param {!goog.structs.Map<string, ?>|!Object} map Map of string parameter\n *     names to parameter value. If parameter value is an array, it is\n *     treated as if the key maps to each individual value in the\n *     array.\n * @param {boolean=} opt_ignoreCase If true, ignore the case of the parameter\n *     name in #get.\n * @return {!goog.Uri.QueryData} The populated query data instance.\n */\ngoog.Uri.QueryData.createFromMap = function(map, opt_ignoreCase) {\n  var keys = goog.structs.getKeys(map);\n  if (typeof keys == 'undefined') {\n    throw new Error('Keys are undefined');\n  }\n\n  var queryData = new goog.Uri.QueryData(null, opt_ignoreCase);\n  var values = goog.structs.getValues(map);\n  for (var i = 0; i < keys.length; i++) {\n    var key = keys[i];\n    var value = values[i];\n    if (!Array.isArray(value)) {\n      queryData.add(key, value);\n    } else {\n      queryData.setValues(key, value);\n    }\n  }\n  return queryData;\n};\n\n\n/**\n * Creates a new query data instance from parallel arrays of parameter names\n * and values. Allows for duplicate parameter names. Throws an error if the\n * lengths of the arrays differ.\n *\n * @param {!Array<string>} keys Parameter names.\n * @param {!Array<?>} values Parameter values.\n * @param {boolean=} opt_ignoreCase If true, ignore the case of the parameter\n *     name in #get.\n * @return {!goog.Uri.QueryData} The populated query data instance.\n */\ngoog.Uri.QueryData.createFromKeysValues = function(\n    keys, values, opt_ignoreCase) {\n  if (keys.length != values.length) {\n    throw new Error('Mismatched lengths for keys/values');\n  }\n  var queryData = new goog.Uri.QueryData(null, opt_ignoreCase);\n  for (var i = 0; i < keys.length; i++) {\n    queryData.add(keys[i], values[i]);\n  }\n  return queryData;\n};\n\n\n/**\n * @return {?number} The number of parameters.\n */\ngoog.Uri.QueryData.prototype.getCount = function() {\n  this.ensureKeyMapInitialized_();\n  return this.count_;\n};\n\n\n/**\n * Adds a key value pair.\n * @param {string} key Name.\n * @param {*} value Value.\n * @return {!goog.Uri.QueryData} Instance of this object.\n */\ngoog.Uri.QueryData.prototype.add = function(key, value) {\n  this.ensureKeyMapInitialized_();\n  this.invalidateCache_();\n\n  key = this.getKeyName_(key);\n  var values = this.keyMap_.get(key);\n  if (!values) {\n    this.keyMap_.set(key, (values = []));\n  }\n  values.push(value);\n  this.count_ = goog.asserts.assertNumber(this.count_) + 1;\n  return this;\n};\n\n\n/**\n * Removes all the params with the given key.\n * @param {string} key Name.\n * @return {boolean} Whether any parameter was removed.\n */\ngoog.Uri.QueryData.prototype.remove = function(key) {\n  this.ensureKeyMapInitialized_();\n\n  key = this.getKeyName_(key);\n  if (this.keyMap_.containsKey(key)) {\n    this.invalidateCache_();\n\n    // Decrement parameter count.\n    this.count_ =\n        goog.asserts.assertNumber(this.count_) - this.keyMap_.get(key).length;\n    return this.keyMap_.remove(key);\n  }\n  return false;\n};\n\n\n/**\n * Clears the parameters.\n */\ngoog.Uri.QueryData.prototype.clear = function() {\n  this.invalidateCache_();\n  this.keyMap_ = null;\n  this.count_ = 0;\n};\n\n\n/**\n * @return {boolean} Whether we have any parameters.\n */\ngoog.Uri.QueryData.prototype.isEmpty = function() {\n  this.ensureKeyMapInitialized_();\n  return this.count_ == 0;\n};\n\n\n/**\n * Whether there is a parameter with the given name\n * @param {string} key The parameter name to check for.\n * @return {boolean} Whether there is a parameter with the given name.\n */\ngoog.Uri.QueryData.prototype.containsKey = function(key) {\n  this.ensureKeyMapInitialized_();\n  key = this.getKeyName_(key);\n  return this.keyMap_.containsKey(key);\n};\n\n\n/**\n * Whether there is a parameter with the given value.\n * @param {*} value The value to check for.\n * @return {boolean} Whether there is a parameter with the given value.\n */\ngoog.Uri.QueryData.prototype.containsValue = function(value) {\n  // NOTE(arv): This solution goes through all the params even if it was the\n  // first param. We can get around this by not reusing code or by switching to\n  // iterators.\n  var vals = this.getValues();\n  return goog.array.contains(vals, value);\n};\n\n\n/**\n * Runs a callback on every key-value pair in the map, including duplicate keys.\n * This won't maintain original order when duplicate keys are interspersed (like\n * getKeys() / getValues()).\n * @param {function(this:SCOPE, ?, string, !goog.Uri.QueryData)} f\n * @param {SCOPE=} opt_scope The value of \"this\" inside f.\n * @template SCOPE\n */\ngoog.Uri.QueryData.prototype.forEach = function(f, opt_scope) {\n  this.ensureKeyMapInitialized_();\n  this.keyMap_.forEach(function(values, key) {\n    goog.array.forEach(values, function(value) {\n      f.call(opt_scope, value, key, this);\n    }, this);\n  }, this);\n};\n\n\n/**\n * Returns all the keys of the parameters. If a key is used multiple times\n * it will be included multiple times in the returned array\n * @return {!Array<string>} All the keys of the parameters.\n */\ngoog.Uri.QueryData.prototype.getKeys = function() {\n  this.ensureKeyMapInitialized_();\n  // We need to get the values to know how many keys to add.\n  var vals = this.keyMap_.getValues();\n  var keys = this.keyMap_.getKeys();\n  var rv = [];\n  for (var i = 0; i < keys.length; i++) {\n    var val = vals[i];\n    for (var j = 0; j < val.length; j++) {\n      rv.push(keys[i]);\n    }\n  }\n  return rv;\n};\n\n\n/**\n * Returns all the values of the parameters with the given name. If the query\n * data has no such key this will return an empty array. If no key is given\n * all values wil be returned.\n * @param {string=} opt_key The name of the parameter to get the values for.\n * @return {!Array<?>} All the values of the parameters with the given name.\n */\ngoog.Uri.QueryData.prototype.getValues = function(opt_key) {\n  this.ensureKeyMapInitialized_();\n  var rv = [];\n  if (typeof opt_key === 'string') {\n    if (this.containsKey(opt_key)) {\n      rv = goog.array.concat(rv, this.keyMap_.get(this.getKeyName_(opt_key)));\n    }\n  } else {\n    // Return all values.\n    var values = this.keyMap_.getValues();\n    for (var i = 0; i < values.length; i++) {\n      rv = goog.array.concat(rv, values[i]);\n    }\n  }\n  return rv;\n};\n\n\n/**\n * Sets a key value pair and removes all other keys with the same value.\n *\n * @param {string} key Name.\n * @param {*} value Value.\n * @return {!goog.Uri.QueryData} Instance of this object.\n */\ngoog.Uri.QueryData.prototype.set = function(key, value) {\n  this.ensureKeyMapInitialized_();\n  this.invalidateCache_();\n\n  // TODO(chrishenry): This could be better written as\n  // this.remove(key), this.add(key, value), but that would reorder\n  // the key (since the key is first removed and then added at the\n  // end) and we would have to fix unit tests that depend on key\n  // ordering.\n  key = this.getKeyName_(key);\n  if (this.containsKey(key)) {\n    this.count_ =\n        goog.asserts.assertNumber(this.count_) - this.keyMap_.get(key).length;\n  }\n  this.keyMap_.set(key, [value]);\n  this.count_ = goog.asserts.assertNumber(this.count_) + 1;\n  return this;\n};\n\n\n/**\n * Returns the first value associated with the key. If the query data has no\n * such key this will return undefined or the optional default.\n * @param {string} key The name of the parameter to get the value for.\n * @param {*=} opt_default The default value to return if the query data\n *     has no such key.\n * @return {*} The first string value associated with the key, or opt_default\n *     if there's no value.\n */\ngoog.Uri.QueryData.prototype.get = function(key, opt_default) {\n  if (!key) {\n    return opt_default;\n  }\n  var values = this.getValues(key);\n  return values.length > 0 ? String(values[0]) : opt_default;\n};\n\n\n/**\n * Sets the values for a key. If the key already exists, this will\n * override all of the existing values that correspond to the key.\n * @param {string} key The key to set values for.\n * @param {!Array<?>} values The values to set.\n */\ngoog.Uri.QueryData.prototype.setValues = function(key, values) {\n  this.remove(key);\n\n  if (values.length > 0) {\n    this.invalidateCache_();\n    this.keyMap_.set(this.getKeyName_(key), goog.array.clone(values));\n    this.count_ = goog.asserts.assertNumber(this.count_) + values.length;\n  }\n};\n\n\n/**\n * @return {string} Encoded query string.\n * @override\n */\ngoog.Uri.QueryData.prototype.toString = function() {\n  if (this.encodedQuery_) {\n    return this.encodedQuery_;\n  }\n\n  if (!this.keyMap_) {\n    return '';\n  }\n\n  var sb = [];\n\n  // In the past, we use this.getKeys() and this.getVals(), but that\n  // generates a lot of allocations as compared to simply iterating\n  // over the keys.\n  var keys = this.keyMap_.getKeys();\n  for (var i = 0; i < keys.length; i++) {\n    var key = keys[i];\n    var encodedKey = goog.string.urlEncode(key);\n    var val = this.getValues(key);\n    for (var j = 0; j < val.length; j++) {\n      var param = encodedKey;\n      // Ensure that null and undefined are encoded into the url as\n      // literal strings.\n      if (val[j] !== '') {\n        param += '=' + goog.string.urlEncode(val[j]);\n      }\n      sb.push(param);\n    }\n  }\n\n  return this.encodedQuery_ = sb.join('&');\n};\n\n\n/**\n * @throws URIError If URI is malformed (that is, if decodeURIComponent fails on\n *     any of the URI components).\n * @return {string} Decoded query string.\n */\ngoog.Uri.QueryData.prototype.toDecodedString = function() {\n  return goog.Uri.decodeOrEmpty_(this.toString());\n};\n\n\n/**\n * Invalidate the cache.\n * @private\n */\ngoog.Uri.QueryData.prototype.invalidateCache_ = function() {\n  this.encodedQuery_ = null;\n};\n\n\n/**\n * Removes all keys that are not in the provided list. (Modifies this object.)\n * @param {Array<string>} keys The desired keys.\n * @return {!goog.Uri.QueryData} a reference to this object.\n */\ngoog.Uri.QueryData.prototype.filterKeys = function(keys) {\n  this.ensureKeyMapInitialized_();\n  this.keyMap_.forEach(function(value, key) {\n    if (!goog.array.contains(keys, key)) {\n      this.remove(key);\n    }\n  }, this);\n  return this;\n};\n\n\n/**\n * Clone the query data instance.\n * @return {!goog.Uri.QueryData} New instance of the QueryData object.\n */\ngoog.Uri.QueryData.prototype.clone = function() {\n  var rv = new goog.Uri.QueryData();\n  rv.encodedQuery_ = this.encodedQuery_;\n  if (this.keyMap_) {\n    rv.keyMap_ = this.keyMap_.clone();\n    rv.count_ = this.count_;\n  }\n  return rv;\n};\n\n\n/**\n * Helper function to get the key name from a JavaScript object. Converts\n * the object to a string, and to lower case if necessary.\n * @private\n * @param {*} arg The object to get a key name from.\n * @return {string} valid key name which can be looked up in #keyMap_.\n */\ngoog.Uri.QueryData.prototype.getKeyName_ = function(arg) {\n  var keyName = String(arg);\n  if (this.ignoreCase_) {\n    keyName = keyName.toLowerCase();\n  }\n  return keyName;\n};\n\n\n/**\n * Ignore case in parameter names.\n * NOTE: If there are already key/value pairs in the QueryData, and\n * ignoreCase_ is set to false, the keys will all be lower-cased.\n * @param {boolean} ignoreCase whether this goog.Uri should ignore case.\n */\ngoog.Uri.QueryData.prototype.setIgnoreCase = function(ignoreCase) {\n  var resetKeys = ignoreCase && !this.ignoreCase_;\n  if (resetKeys) {\n    this.ensureKeyMapInitialized_();\n    this.invalidateCache_();\n    this.keyMap_.forEach(function(value, key) {\n      var lowerCase = key.toLowerCase();\n      if (key != lowerCase) {\n        this.remove(key);\n        this.setValues(lowerCase, value);\n      }\n    }, this);\n  }\n  this.ignoreCase_ = ignoreCase;\n};\n\n\n/**\n * Extends a query data object with another query data or map like object. This\n * operates 'in-place', it does not create a new QueryData object.\n *\n * @param {...(?goog.Uri.QueryData|?goog.structs.Map<?, ?>|?Object)} var_args\n *     The object from which key value pairs will be copied. Note: does not\n *     accept null.\n * @suppress {deprecated} Use deprecated goog.structs.forEach to allow different\n * types of parameters.\n */\ngoog.Uri.QueryData.prototype.extend = function(var_args) {\n  for (var i = 0; i < arguments.length; i++) {\n    var data = arguments[i];\n    goog.structs.forEach(data, function(value, key) {\n      this.add(key, value);\n    }, this);\n  }\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview JSON utility functions.\n */\n\n\ngoog.provide('goog.json');\ngoog.provide('goog.json.Replacer');\ngoog.provide('goog.json.Reviver');\ngoog.provide('goog.json.Serializer');\n\n\n/**\n * @define {boolean} If true, use the native JSON parsing API.\n * NOTE: The default `goog.json.parse` implementation is able to handle\n * invalid JSON. JSPB used to produce invalid JSON which is not the case\n * anymore so this is safe to enable for parsing JSPB. Using native JSON is\n * faster and safer than the default implementation using `eval`.\n */\ngoog.json.USE_NATIVE_JSON = goog.define('goog.json.USE_NATIVE_JSON', false);\n\n/**\n * @define {boolean} If true, try the native JSON parsing API first. If it\n * fails, log an error and use `eval` instead. This is useful when\n * transitioning to `goog.json.USE_NATIVE_JSON`. The error logger needs to\n * be set by `goog.json.setErrorLogger`. If it is not set then the error\n * is ignored.\n */\ngoog.json.TRY_NATIVE_JSON = goog.define('goog.json.TRY_NATIVE_JSON', false);\n\n\n/**\n * Tests if a string is an invalid JSON string. This only ensures that we are\n * not using any invalid characters\n * @param {string} s The string to test.\n * @return {boolean} True if the input is a valid JSON string.\n */\ngoog.json.isValid = function(s) {\n  // All empty whitespace is not valid.\n  if (/^\\s*$/.test(s)) {\n    return false;\n  }\n\n  // This is taken from http://www.json.org/json2.js which is released to the\n  // public domain.\n  // Changes: We dissallow \\u2028 Line separator and \\u2029 Paragraph separator\n  // inside strings.  We also treat \\u2028 and \\u2029 as whitespace which they\n  // are in the RFC but IE and Safari does not match \\s to these so we need to\n  // include them in the reg exps in all places where whitespace is allowed.\n  // We allowed \\x7f inside strings because some tools don't escape it,\n  // e.g. http://www.json.org/java/org/json/JSONObject.java\n\n  // Parsing happens in three stages. In the first stage, we run the text\n  // against regular expressions that look for non-JSON patterns. We are\n  // especially concerned with '()' and 'new' because they can cause invocation,\n  // and '=' because it can cause mutation. But just to be safe, we want to\n  // reject all unexpected forms.\n\n  // We split the first stage into 4 regexp operations in order to work around\n  // crippling inefficiencies in IE's and Safari's regexp engines. First we\n  // replace all backslash pairs with '@' (a non-JSON character). Second, we\n  // replace all simple value tokens with ']' characters, but only when followed\n  // by a colon, comma, closing bracket or end of string. Third, we delete all\n  // open brackets that follow a colon or comma or that begin the text. Finally,\n  // we look to see that the remaining characters are only whitespace or ']' or\n  // ',' or ':' or '{' or '}'. If that is so, then the text is safe for eval.\n\n  // Don't make these static since they have the global flag.\n  const backslashesRe = /\\\\[\"\\\\\\/bfnrtu]/g;\n  const simpleValuesRe =\n      /(?:\"[^\"\\\\\\n\\r\\u2028\\u2029\\x00-\\x08\\x0a-\\x1f]*\"|true|false|null|-?\\d+(?:\\.\\d*)?(?:[eE][+\\-]?\\d+)?)[\\s\\u2028\\u2029]*(?=:|,|]|}|$)/g;\n  const openBracketsRe = /(?:^|:|,)(?:[\\s\\u2028\\u2029]*\\[)+/g;\n  const remainderRe = /^[\\],:{}\\s\\u2028\\u2029]*$/;\n\n  return remainderRe.test(\n      s.replace(backslashesRe, '@')\n          .replace(simpleValuesRe, ']')\n          .replace(openBracketsRe, ''));\n};\n\n/**\n * Logs a parsing error in `JSON.parse` solvable by using `eval`\n * if `goog.json.TRY_NATIVE_JSON` is enabled.\n * @private {function(string, !Error)} The first parameter is the error message,\n *     the second is the exception thrown by `JSON.parse`.\n */\ngoog.json.errorLogger_ = goog.nullFunction;\n\n\n/**\n * Sets an error logger to use if there's a recoverable parsing error and\n * `goog.json.TRY_NATIVE_JSON` is enabled.\n * @param {function(string, !Error)} errorLogger The first parameter is the\n *     error message, the second is the exception thrown by `JSON.parse`.\n */\ngoog.json.setErrorLogger = function(errorLogger) {\n  goog.json.errorLogger_ = errorLogger;\n};\n\n\n/**\n * Parses a JSON string and returns the result. This throws an exception if\n * the string is an invalid JSON string.\n *\n * Note that this is very slow on large strings. Use JSON.parse if possible.\n *\n * @param {*} s The JSON string to parse.\n * @throws Error if s is invalid JSON.\n * @return {Object} The object generated from the JSON string, or null.\n * @deprecated Use JSON.parse.\n */\ngoog.json.parse = goog.json.USE_NATIVE_JSON ?\n    /** @type {function(*):Object} */ (goog.global['JSON']['parse']) :\n    function(s) {\n      let error;\n      if (goog.json.TRY_NATIVE_JSON) {\n        try {\n          return goog.global['JSON']['parse'](s);\n        } catch (ex) {\n          error = ex;\n        }\n      }\n      const o = String(s);\n      if (goog.json.isValid(o)) {\n\n        try {\n          const result = /** @type {?Object} */ (eval('(' + o + ')'));\n          if (error) {\n            goog.json.errorLogger_('Invalid JSON: ' + o, error);\n          }\n          return result;\n        } catch (ex) {\n        }\n      }\n      throw new Error('Invalid JSON string: ' + o);\n    };\n\n\n/**\n * JSON replacer, as defined in Section 15.12.3 of the ES5 spec.\n * @see http://ecma-international.org/ecma-262/5.1/#sec-15.12.3\n *\n * TODO(nicksantos): Array should also be a valid replacer.\n *\n * @typedef {function(this:Object, string, *): *}\n */\ngoog.json.Replacer;\n\n\n/**\n * JSON reviver, as defined in Section 15.12.2 of the ES5 spec.\n * @see http://ecma-international.org/ecma-262/5.1/#sec-15.12.3\n *\n * @typedef {function(this:Object, string, *): *}\n */\ngoog.json.Reviver;\n\n\n/**\n * Serializes an object or a value to a JSON string.\n *\n * @param {*} object The object to serialize.\n * @param {?goog.json.Replacer=} opt_replacer A replacer function\n *     called for each (key, value) pair that determines how the value\n *     should be serialized. By defult, this just returns the value\n *     and allows default serialization to kick in.\n * @throws Error if there are loops in the object graph.\n * @return {string} A JSON string representation of the input.\n */\ngoog.json.serialize = goog.json.USE_NATIVE_JSON ?\n    /** @type {function(*, ?goog.json.Replacer=):string} */\n    (goog.global['JSON']['stringify']) :\n    function(object, opt_replacer) {\n      // NOTE(nicksantos): Currently, we never use JSON.stringify.\n      //\n      // The last time I evaluated this, JSON.stringify had subtle bugs and\n      // behavior differences on all browsers, and the performance win was not\n      // large enough to justify all the issues. This may change in the future\n      // as browser implementations get better.\n      //\n      // assertSerialize in json_test contains if branches for the cases\n      // that fail.\n      return new goog.json.Serializer(opt_replacer).serialize(object);\n    };\n\n\n\n/**\n * Class that is used to serialize JSON objects to a string.\n * @param {?goog.json.Replacer=} opt_replacer Replacer.\n * @constructor\n */\ngoog.json.Serializer = function(opt_replacer) {\n  /**\n   * @type {goog.json.Replacer|null|undefined}\n   * @private\n   */\n  this.replacer_ = opt_replacer;\n};\n\n\n/**\n * Serializes an object or a value to a JSON string.\n *\n * @param {*} object The object to serialize.\n * @throws Error if there are loops in the object graph.\n * @return {string} A JSON string representation of the input.\n */\ngoog.json.Serializer.prototype.serialize = function(object) {\n  const sb = [];\n  this.serializeInternal(object, sb);\n  return sb.join('');\n};\n\n\n/**\n * Serializes a generic value to a JSON string\n * @protected\n * @param {*} object The object to serialize.\n * @param {Array<string>} sb Array used as a string builder.\n * @throws Error if there are loops in the object graph.\n */\ngoog.json.Serializer.prototype.serializeInternal = function(object, sb) {\n  if (object == null) {\n    // undefined == null so this branch covers undefined as well as null\n    sb.push('null');\n    return;\n  }\n\n  if (typeof object == 'object') {\n    if (Array.isArray(object)) {\n      this.serializeArray(object, sb);\n      return;\n    } else if (\n        object instanceof String || object instanceof Number ||\n        object instanceof Boolean) {\n      object = object.valueOf();\n      // Fall through to switch below.\n    } else {\n      this.serializeObject_(/** @type {!Object} */ (object), sb);\n      return;\n    }\n  }\n\n  switch (typeof object) {\n    case 'string':\n      this.serializeString_(object, sb);\n      break;\n    case 'number':\n      this.serializeNumber_(object, sb);\n      break;\n    case 'boolean':\n      sb.push(String(object));\n      break;\n    case 'function':\n      sb.push('null');\n      break;\n    default:\n      throw new Error('Unknown type: ' + typeof object);\n  }\n};\n\n\n/**\n * Character mappings used internally for goog.string.quote\n * @private\n * @type {!Object}\n */\ngoog.json.Serializer.charToJsonCharCache_ = {\n  '\\\"': '\\\\\"',\n  '\\\\': '\\\\\\\\',\n  '/': '\\\\/',\n  '\\b': '\\\\b',\n  '\\f': '\\\\f',\n  '\\n': '\\\\n',\n  '\\r': '\\\\r',\n  '\\t': '\\\\t',\n\n  '\\x0B': '\\\\u000b'  // '\\v' is not supported in JScript\n};\n\n\n/**\n * Regular expression used to match characters that need to be replaced.\n * The S60 browser has a bug where unicode characters are not matched by\n * regular expressions. The condition below detects such behaviour and\n * adjusts the regular expression accordingly.\n * @private\n * @type {!RegExp}\n */\ngoog.json.Serializer.charsToReplace_ = /\\uffff/.test('\\uffff') ?\n    /[\\\\\\\"\\x00-\\x1f\\x7f-\\uffff]/g :\n    /[\\\\\\\"\\x00-\\x1f\\x7f-\\xff]/g;\n\n\n/**\n * Serializes a string to a JSON string\n * @private\n * @param {string} s The string to serialize.\n * @param {Array<string>} sb Array used as a string builder.\n */\ngoog.json.Serializer.prototype.serializeString_ = function(s, sb) {\n  // The official JSON implementation does not work with international\n  // characters.\n  sb.push('\"', s.replace(goog.json.Serializer.charsToReplace_, function(c) {\n    // caching the result improves performance by a factor 2-3\n    let rv = goog.json.Serializer.charToJsonCharCache_[c];\n    if (!rv) {\n      rv = '\\\\u' + (c.charCodeAt(0) | 0x10000).toString(16).substr(1);\n      goog.json.Serializer.charToJsonCharCache_[c] = rv;\n    }\n    return rv;\n  }), '\"');\n};\n\n\n/**\n * Serializes a number to a JSON string\n * @private\n * @param {number} n The number to serialize.\n * @param {Array<string>} sb Array used as a string builder.\n */\ngoog.json.Serializer.prototype.serializeNumber_ = function(n, sb) {\n  sb.push(isFinite(n) && !isNaN(n) ? String(n) : 'null');\n};\n\n\n/**\n * Serializes an array to a JSON string\n * @param {Array<string>} arr The array to serialize.\n * @param {Array<string>} sb Array used as a string builder.\n * @protected\n */\ngoog.json.Serializer.prototype.serializeArray = function(arr, sb) {\n  const l = arr.length;\n  sb.push('[');\n  let sep = '';\n  for (let i = 0; i < l; i++) {\n    sb.push(sep);\n\n    const value = arr[i];\n    this.serializeInternal(\n        this.replacer_ ? this.replacer_.call(arr, String(i), value) : value,\n        sb);\n\n    sep = ',';\n  }\n  sb.push(']');\n};\n\n\n/**\n * Serializes an object to a JSON string\n * @private\n * @param {!Object} obj The object to serialize.\n * @param {Array<string>} sb Array used as a string builder.\n */\ngoog.json.Serializer.prototype.serializeObject_ = function(obj, sb) {\n  sb.push('{');\n  let sep = '';\n  for (const key in obj) {\n    if (Object.prototype.hasOwnProperty.call(obj, key)) {\n      const value = obj[key];\n      // Skip functions.\n      if (typeof value != 'function') {\n        sb.push(sep);\n        this.serializeString_(key, sb);\n        sb.push(':');\n\n        this.serializeInternal(\n            this.replacer_ ? this.replacer_.call(obj, key, value) : value, sb);\n\n        sep = ',';\n      }\n    }\n  }\n  sb.push('}');\n};\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines utility and helper functions.\n */\n\ngoog.provide('fireauth.util');\n\ngoog.require('goog.Promise');\ngoog.require('goog.Timer');\ngoog.require('goog.Uri');\ngoog.require('goog.dom');\ngoog.require('goog.events');\ngoog.require('goog.events.EventType');\ngoog.require('goog.html.SafeUrl');\ngoog.require('goog.json');\ngoog.require('goog.object');\ngoog.require('goog.string');\ngoog.require('goog.userAgent');\ngoog.require('goog.window');\n\n\n/** @suppress {duplicate} Suppress variable 'angular' first declared. */\nvar angular;\n\n/**\n * Checks whether the user agent is IE11.\n * @return {boolean} True if it is IE11.\n */\nfireauth.util.isIe11 = function() {\n  return goog.userAgent.IE &&\n      !!goog.userAgent.DOCUMENT_MODE &&\n      goog.userAgent.DOCUMENT_MODE == 11;\n};\n\n\n/**\n * Checks whether the user agent is IE10.\n * @return {boolean} True if it is IE10.\n */\nfireauth.util.isIe10 = function() {\n  return goog.userAgent.IE &&\n      !!goog.userAgent.DOCUMENT_MODE &&\n      goog.userAgent.DOCUMENT_MODE == 10;\n};\n\n\n/**\n * Checks whether the user agent is Edge.\n * @param {string} userAgent The browser user agent string.\n * @return {boolean} True if it is Edge.\n */\nfireauth.util.isEdge = function(userAgent) {\n  return /Edge\\/\\d+/.test(userAgent);\n};\n\n\n/**\n * @param {?string=} opt_userAgent The navigator user agent.\n * @return {boolean} Whether local storage is not synchronized between an iframe\n *     and a popup of the same domain.\n */\nfireauth.util.isLocalStorageNotSynchronized = function(opt_userAgent) {\n  var ua = opt_userAgent || fireauth.util.getUserAgentString();\n  return fireauth.util.isIe11() || fireauth.util.isEdge(ua);\n};\n\n\n/** @return {string} The current URL. */\nfireauth.util.getCurrentUrl = function() {\n  return (goog.global['window'] && goog.global['window']['location']['href']) ||\n      // Check for worker environments.\n      (self && self['location'] && self['location']['href']) || '';\n};\n\n\n/**\n * @param {string} requestUri The request URI to send in verifyAssertion\n *     request.\n * @return {string} The sanitized URI, in this case it undoes the hashbang\n *     angularJs routing changes to request URI.\n */\nfireauth.util.sanitizeRequestUri = function(requestUri) {\n  // If AngularJS is included.\n  if (typeof angular != 'undefined') {\n    // Remove hashbang modifications from URL.\n    requestUri = requestUri.replace('#/', '#').replace('#!/', '#');\n  }\n  return requestUri;\n};\n\n\n/**\n * @param {?string} url The target URL. When !url, redirects to a blank page.\n * @param {!Window=} opt_window The optional window to redirect to target URL.\n * @param {boolean=} opt_bypassCheck Whether to bypass check. Used for custom\n *     scheme redirects.\n */\nfireauth.util.goTo = function(url, opt_window, opt_bypassCheck) {\n  var win = opt_window || goog.global['window'];\n  // No URL, redirect to blank page.\n  var finalUrl = 'about:blank';\n  // Popping up a window and then assigning its URL seems to cause some weird\n  // error. Fixed by setting win.location.href for now in IE browsers.\n  // Bug was detected in Edge and IE9.\n  if (url && !opt_bypassCheck) {\n    // We cannot use goog.dom.safe.setLocationHref since it tries to read\n    // popup.location from a different origin, which is an error in IE.\n    // (In Chrome, popup.location is just an empty Location object)\n    finalUrl = goog.html.SafeUrl.unwrap(goog.html.SafeUrl.sanitize(url));\n  }\n  win.location.href = finalUrl;\n};\n\n\n/**\n * @param {string} url The target URL.\n * @param {!Window=} opt_window The optional window to replace with target URL.\n * @param {boolean=} opt_bypassCheck Whether to bypass check. Used for custom\n *     scheme redirects.\n */\nfireauth.util.replaceCurrentUrl = function(url, opt_window, opt_bypassCheck) {\n  var win = opt_window || goog.global['window'];\n  if (!opt_bypassCheck) {\n    win.location.replace(\n        goog.html.SafeUrl.unwrap(goog.html.SafeUrl.sanitize(url)));\n  } else {\n    win.location.replace(url);\n  }\n};\n\n\n/**\n * Deep comparison of two objects.\n * @param {!Object} a The first object.\n * @param {!Object} b The second object.\n * @return {!Array<string>} The list of keys that are different between both\n *     objects provided.\n */\nfireauth.util.getKeyDiff = function(a, b) {\n  var diff = [];\n  for (var k in a) {\n    if (!(k in b)) {\n      diff.push(k);\n    } else if (typeof a[k] != typeof b[k]) {\n      diff.push(k);\n    } else if (typeof a[k] == 'object' && a[k] != null && b[k] != null) {\n      if (fireauth.util.getKeyDiff(\n          a[k], b[k]).length > 0) {\n        diff.push(k);\n      }\n    } else if (a[k] !== b[k]) {\n      diff.push(k);\n    }\n  }\n  for (var k in b) {\n    if (!(k in a)) {\n      diff.push(k);\n    }\n  }\n  return diff;\n};\n\n\n/**\n * @param {?string=} opt_userAgent The navigator user agent.\n * @return {?number} The Chrome version, null if the user agent is not Chrome.\n */\nfireauth.util.getChromeVersion = function(opt_userAgent) {\n  var ua = opt_userAgent || fireauth.util.getUserAgentString();\n  var browserName = fireauth.util.getBrowserName(ua);\n  // Confirm current browser is Chrome.\n  if (browserName != fireauth.util.BrowserName.CHROME) {\n    return null;\n  }\n  var matches = ua.match(/\\sChrome\\/(\\d+)/i);\n  if (matches && matches.length == 2) {\n    return parseInt(matches[1], 10);\n  }\n  return null;\n};\n\n\n/**\n * Detects CORS support.\n * @param {?string=} opt_userAgent The navigator user agent.\n * @return {boolean} True if the browser supports CORS.\n */\nfireauth.util.supportsCors = function(opt_userAgent) {\n  // Chrome 7 has CORS issues, pick 30 as upper limit.\n  var chromeVersion = fireauth.util.getChromeVersion(opt_userAgent);\n  if (chromeVersion && chromeVersion < 30) {\n    return false;\n  }\n  // Among all other supported browsers, only IE8 and IE9 don't support CORS.\n  return !goog.userAgent.IE || // Not IE.\n      !goog.userAgent.DOCUMENT_MODE || // No document mode == IE Edge.\n      goog.userAgent.DOCUMENT_MODE > 9;\n};\n\n\n/**\n * Detects whether browser is running on a mobile device.\n * @param {?string=} opt_userAgent The navigator user agent.\n * @return {boolean} True if the browser is running on a mobile device.\n */\nfireauth.util.isMobileBrowser = function(opt_userAgent) {\n  var ua = opt_userAgent || fireauth.util.getUserAgentString();\n  var uaLower = ua.toLowerCase();\n  // TODO: implement getBrowserName equivalent for OS.\n  if (uaLower.match(/android/) ||\n      uaLower.match(/webos/) ||\n      uaLower.match(/iphone|ipad|ipod/) ||\n      uaLower.match(/blackberry/) ||\n      uaLower.match(/windows phone/) ||\n      uaLower.match(/iemobile/)) {\n    return true;\n  }\n  return false;\n};\n\n\n/**\n * Closes the provided window.\n * @param {?Window=} opt_window The optional window to close. The current window\n *     is used if none is provided.\n */\nfireauth.util.closeWindow = function(opt_window) {\n  var win = opt_window || goog.global['window'];\n  // In some browsers, in certain cases after the window closes, as seen in\n  // Samsung Galaxy S3 Android 4.4.2 stock browser, the win object here is an\n  // empty object {}. Try to catch the failure and ignore it.\n  try {\n    win.close();\n  } catch(e) {}\n};\n\n\n/**\n * Opens a popup window.\n * @param {?string=} opt_url initial URL of the popup window\n * @param {string=} opt_name title of the popup\n * @param {?number=} opt_width width of the popup\n * @param {?number=} opt_height height of the popup\n * @return {?Window} Returns the window object that was opened. This returns\n *                   null if a popup blocker prevented the window from being\n *                   opened.\n */\nfireauth.util.popup = function(opt_url, opt_name, opt_width, opt_height) {\n  var width = opt_width || 500;\n  var height = opt_height || 600;\n  var top = (window.screen.availHeight - height) / 2;\n  var left = (window.screen.availWidth - width) / 2;\n  var options = {\n    'width': width,\n    'height': height,\n    'top': top > 0 ? top : 0,\n    'left': left > 0 ? left : 0,\n    'location': true,\n    'resizable': true,\n    'statusbar': true,\n    'toolbar': false\n  };\n  // Chrome iOS 7 and 8 is returning an undefined popup win when target is\n  // specified, even though the popup is not necessarily blocked.\n  var ua = fireauth.util.getUserAgentString().toLowerCase();\n  if (opt_name) {\n    options['target'] = opt_name;\n    // This will force a new window on each call, achieving the same effect as\n    // passing a random name on each call.\n    if (goog.string.contains(ua, 'crios/')) {\n      options['target'] = '_blank';\n    }\n  }\n  var browserName = fireauth.util.getBrowserName(\n      fireauth.util.getUserAgentString());\n  if (browserName == fireauth.util.BrowserName.FIREFOX) {\n    // Firefox complains when invalid URLs are popped out. Hacky way to bypass.\n    opt_url = opt_url || 'http://localhost';\n    // Firefox disables by default scrolling on popup windows, which can create\n    // issues when the user has many Google accounts, for instance.\n    options['scrollbars'] = true;\n  }\n  // about:blank getting sanitized causing browsers like IE/Edge to display\n  // brief error message before redirecting to handler.\n  var newWin = goog.window.open(opt_url || '', options);\n  if (newWin) {\n    // Flaky on IE edge, encapsulate with a try and catch.\n    try {\n      newWin.focus();\n    } catch (e) {}\n  }\n  return newWin;\n};\n\n\n/**\n * The default value for the popup wait cycle in ms.\n * @const {number}\n * @private\n */\nfireauth.util.POPUP_WAIT_CYCLE_MS_ = 2000;\n\n\n/**\n * @param {?string=} opt_userAgent The optional user agent.\n * @return {boolean} Whether the popup requires a delay before closing itself.\n */\nfireauth.util.requiresPopupDelay = function(opt_userAgent) {\n  // TODO: remove this hack when CriOS behavior is fixed in iOS.\n  var ua = opt_userAgent || fireauth.util.getUserAgentString();\n  // Was observed in iOS 10.2 Chrome version 55.0.2883.79.\n  // Apply to Chrome 55+ iOS 10+ to ensure future Chrome versions or iOS 10\n  // minor updates do not suddenly resurface this bug. Revisit this check on\n  // next CriOS update.\n  var matches = ua.match(/OS (\\d+)_.*CriOS\\/(\\d+)\\./i);\n  if (matches && matches.length > 2) {\n    // iOS 10+ && chrome 55+.\n    return parseInt(matches[1], 10) >= 10 && parseInt(matches[2], 10) >= 55;\n  }\n  return false;\n};\n\n\n/**\n * @param {?Window} win The popup window to check.\n * @param {number=} opt_stepDuration The duration of each wait cycle before\n *     checking that window is closed.\n * @return {!goog.Promise<undefined>} The promise to resolve when window is\n *     closed.\n */\nfireauth.util.onPopupClose = function(win, opt_stepDuration) {\n  var stepDuration = opt_stepDuration || fireauth.util.POPUP_WAIT_CYCLE_MS_;\n  return new goog.Promise(function(resolve, reject) {\n    // Function to repeat each stepDuration.\n    var repeat = function() {\n      goog.Timer.promise(stepDuration).then(function() {\n        // After wait, check if window is closed.\n        if (!win || win.closed) {\n          // If so, resolve.\n          resolve();\n        } else {\n          // Call repeat again.\n          return repeat();\n        }\n      });\n    };\n    return repeat();\n  });\n};\n\n\n/**\n * @param {!Array<string>} authorizedDomains List of authorized domains.\n * @param {string} url The URL to check.\n * @return {boolean} Whether the passed domain is an authorized one.\n */\nfireauth.util.isAuthorizedDomain = function(authorizedDomains, url) {\n  var uri = goog.Uri.parse(url);\n  var scheme = uri.getScheme();\n  var domain = uri.getDomain();\n  for (var i = 0; i < authorizedDomains.length; i++) {\n    // Currently this corresponds to: domain.com = *://*.domain.com:* or\n    // exact domain match.\n    // In the case of Chrome extensions, the authorizedDomain will be formatted\n    // as 'chrome-extension://abcdefghijklmnopqrstuvwxyz123456'.\n    // The URL to check must have a chrome extension scheme and the domain\n    // must be an exact match domain == 'abcdefghijklmnopqrstuvwxyz123456'.\n    if (fireauth.util.matchDomain(authorizedDomains[i], domain, scheme)) {\n      return true;\n    }\n  }\n  return false;\n};\n\n\n/**\n * Represents the dimensions of an entity (width and height).\n * @typedef {{\n *   width: number,\n *   height: number\n * }}\n */\nfireauth.util.Dimensions;\n\n\n/**\n * @param {?Window=} opt_window The optional window whose dimensions are to be\n *     returned. The current window is used if not found.\n * @return {?fireauth.util.Dimensions} The requested window dimensions if\n *     available.\n */\nfireauth.util.getWindowDimensions = function(opt_window) {\n  var win = opt_window || goog.global['window'];\n  if (win && win['innerWidth'] && win['innerHeight']) {\n    return {\n      'width': parseFloat(win['innerWidth']),\n      'height': parseFloat(win['innerHeight'])\n    };\n  }\n  return null;\n};\n\n\n/**\n * RegExp to detect if the domain given is an IP address. This is only used\n * for validating http and https schemes.\n *\n * It does not strictly validate if the IP is a real IP address, but as the\n * matchDomain method tests against a set of valid domains (extracted from the\n * window's current URL), it is sufficient.\n *\n * @const {!RegExp}\n * @private\n */\nfireauth.util.IP_ADDRESS_REGEXP_ = /^\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}$/;\n\n\n/**\n * @param {string} domainPattern The domain pattern to match.\n * @param {string} domain The domain to check. It is assumed that it is a valid\n *     domain, not a user provided one.\n * @param {string} scheme The scheme of the domain to check.\n * @return {boolean} Whether the provided domain matches the domain pattern.\n */\nfireauth.util.matchDomain = function(domainPattern, domain, scheme) {\n  // Chrome extension matching.\n  if (domainPattern.indexOf('chrome-extension://') == 0) {\n    var chromeExtUri = goog.Uri.parse(domainPattern);\n    // Domain must match and the current scheme must be a Chrome extension.\n    return chromeExtUri.getDomain() == domain && scheme == 'chrome-extension';\n  } else if (scheme != 'http' && scheme != 'https') {\n    // Any other scheme that is not http or https cannot be whitelisted.\n    return false;\n  } else {\n    // domainPattern must not contain a scheme and the current scheme must be\n    // either http or https.\n    // Check if authorized domain pattern is an IP address.\n    if (fireauth.util.IP_ADDRESS_REGEXP_.test(domainPattern)) {\n      // The domain has to be exactly equal to the pattern, as an IP domain will\n      // only contain the IP, no extra character.\n      return domain == domainPattern;\n    }\n    // Dots in pattern should be escaped.\n    var escapedDomainPattern = domainPattern.split('.').join('\\\\.');\n    // Non ip address domains.\n    // domain.com = *.domain.com OR domain.com\n    var re = new RegExp(\n        '^(.+\\\\.' + escapedDomainPattern + '|' +\n        escapedDomainPattern + ')$', 'i');\n    return re.test(domain);\n  }\n};\n\n\n/**\n * RegExp to detect if the email address given is valid.\n * @const {!RegExp}\n * @private\n */\nfireauth.util.EMAIL_ADDRESS_REGEXP_ = /^[^@]+@[^@]+$/;\n\n\n/**\n * Determines if it is a valid email address.\n * @param {*} email The email address.\n * @return {boolean} Whether the email address is valid.\n */\nfireauth.util.isValidEmailAddress = function(email) {\n  return typeof email === 'string' &&\n      fireauth.util.EMAIL_ADDRESS_REGEXP_.test(email);\n};\n\n\n/**\n * @return {!goog.Promise<void>} A promise that resolves when DOM is ready.\n */\nfireauth.util.onDomReady = function() {\n  var resolver = null;\n  return new goog.Promise(function(resolve, reject) {\n    var doc = goog.global.document;\n    // If document already loaded, resolve immediately.\n    if (doc.readyState == 'complete') {\n      resolve();\n    } else {\n      // Document not ready, wait for load before resolving.\n      // Save resolver, so we can remove listener in case it was externally\n      // cancelled.\n      resolver = function() {\n        resolve();\n      };\n      goog.events.listenOnce(window, goog.events.EventType.LOAD, resolver);\n    }\n  }).thenCatch(function(error) {\n    // In case this promise was cancelled, make sure it unlistens to load.\n    goog.events.unlisten(window, goog.events.EventType.LOAD, resolver);\n    throw error;\n  });\n};\n\n\n/** @return {boolean} Whether environment supports DOM. */\nfireauth.util.isDOMSupported = function() {\n  return !!goog.global.document;\n};\n\n\n/**\n * The default ondeviceready Cordova timeout in ms.\n * @const {number}\n * @private\n */\nfireauth.util.CORDOVA_ONDEVICEREADY_TIMEOUT_MS_ = 1000;\n\n\n/**\n * @param {?string=} opt_userAgent The optional user agent.\n * @param {number=} opt_timeout The optional timeout in ms for deviceready\n *     event to resolve.\n * @return {!goog.Promise} A promise that resolves if the current environment is\n *     a Cordova environment.\n */\nfireauth.util.checkIfCordova = function(opt_userAgent, opt_timeout) {\n  // Errors generated are internal and should be converted if needed to\n  // developer facing Firebase errors.\n  // Only supported in Android/iOS environment.\n  if (fireauth.util.isAndroidOrIosCordovaScheme(opt_userAgent)) {\n    return fireauth.util.onDomReady().then(function() {\n      return new goog.Promise(function(resolve, reject) {\n        var doc = goog.global.document;\n        var timeoutId = setTimeout(function() {\n          reject(new Error('Cordova framework is not ready.'));\n        }, opt_timeout || fireauth.util.CORDOVA_ONDEVICEREADY_TIMEOUT_MS_);\n        // This should resolve immediately after DOM ready.\n        doc.addEventListener('deviceready', function() {\n          clearTimeout(timeoutId);\n          resolve();\n        }, false);\n      });\n    });\n  }\n  return goog.Promise.reject(\n      new Error('Cordova must run in an Android or iOS file scheme.'));\n};\n\n\n/**\n * @param {?string=} opt_userAgent The optional user agent.\n * @return {boolean} Whether the app is rendered in a mobile iOS or Android\n *     Cordova environment.\n */\nfireauth.util.isAndroidOrIosCordovaScheme = function(opt_userAgent) {\n  var ua = opt_userAgent || fireauth.util.getUserAgentString();\n  return !!((fireauth.util.getCurrentScheme() === 'file:' ||\n             fireauth.util.getCurrentScheme() === 'ionic:') &&\n            ua.toLowerCase().match(/iphone|ipad|ipod|android/));\n};\n\n\n/**\n * @param {?string=} opt_userAgent The optional user agent.\n * @return {boolean} Whether the app is rendered in a mobile iOS 7 or 8 browser.\n */\nfireauth.util.isIOS7Or8 = function(opt_userAgent) {\n  var ua = opt_userAgent || fireauth.util.getUserAgentString();\n  return !!(ua.match(/(iPad|iPhone|iPod).*OS 7_\\d/i) ||\n            ua.match(/(iPad|iPhone|iPod).*OS 8_\\d/i));\n};\n\n\n/**\n * @return {boolean} Whether browser is Safari or an iOS browser and page is\n *     embedded in an iframe. Local Storage does not synchronize with an iframe\n *     embedded on a page in a different domain but will still trigger storage\n *     event with storage changes.\n */\nfireauth.util.isSafariLocalStorageNotSynced = function() {\n  var ua = fireauth.util.getUserAgentString();\n  // Safari or iOS browser and embedded in an iframe.\n  if (!fireauth.util.iframeCanSyncWebStorage(ua) && fireauth.util.isIframe()) {\n    return true;\n  }\n  return false;\n};\n\n\n/**\n * @param {?Window=} opt_win Optional window to check whether it is an iframe.\n *     If not provided, the current window is checked.\n * @return {boolean} Whether web page is running in an iframe.\n */\nfireauth.util.isIframe = function(opt_win) {\n  var win = opt_win || goog.global['window'];\n  try {\n    // Check that the current window is not the top window.\n    // If so, return true.\n    return !!(win && win != win['top']);\n  } catch (e) {\n    return false;\n  }\n};\n\n\n/**\n * @param {?Window=} opt_win Optional window to check whether it has an opener\n *     that is an iframe.\n * @return {boolean} Whether the web page was opened from an iframe.\n */\nfireauth.util.isOpenerAnIframe = function(opt_win) {\n  var win = opt_win || goog.global['window'];\n  try {\n    // Get the opener if available.\n    var opener = win && win['opener'];\n    // Check if the opener is an iframe. If so, return true.\n    // Confirm opener is available, otherwise the current window is checked\n    // instead.\n    return !!(opener && fireauth.util.isIframe(opener));\n  } catch (e) {\n    return false;\n  }\n};\n\n\n/**\n * @param {?Object=} global The optional global scope.\n * @return {boolean} Whether current environment is a worker.\n */\nfireauth.util.isWorker = function(global) {\n  var scope = global || goog.global;\n  // WorkerGlobalScope only defined in worker environment.\n  return typeof scope['WorkerGlobalScope'] !== 'undefined' &&\n         typeof scope['importScripts'] === 'function';\n};\n\n\n/**\n * @param {?Object=} opt_global The optional global scope.\n * @return {boolean} Whether current environment supports fetch API and other\n *     APIs it depends on.\n */\nfireauth.util.isFetchSupported = function(opt_global) {\n  // Required by fetch API calls.\n  var scope = opt_global || goog.global;\n  return typeof scope['fetch'] !== 'undefined' &&\n         typeof scope['Headers'] !== 'undefined' &&\n         typeof scope['Request'] !== 'undefined';\n};\n\n\n/**\n * Enum for the runtime environment.\n * @enum {string}\n */\nfireauth.util.Env = {\n  BROWSER: 'Browser',\n  NODE: 'Node',\n  REACT_NATIVE: 'ReactNative',\n  WORKER: 'Worker'\n};\n\n\n/**\n * @return {!fireauth.util.Env} The current runtime environment.\n */\nfireauth.util.getEnvironment = function() {\n  if (firebase.INTERNAL.hasOwnProperty('reactNative')) {\n    return fireauth.util.Env.REACT_NATIVE;\n  } else if (firebase.INTERNAL.hasOwnProperty('node')) {\n    // browserify seems to keep the process property in some cases even though\n    // the library is browser only. Use this check instead to reliably detect\n    // a Node.js environment.\n    return fireauth.util.Env.NODE;\n  } else if (fireauth.util.isWorker()) {\n    // Worker environment.\n    return fireauth.util.Env.WORKER;\n  }\n  // The default is a browser environment.\n  return fireauth.util.Env.BROWSER;\n};\n\n\n/**\n * @return {boolean} Whether the environment is a native environment, where\n *     CORS checks do not apply.\n */\nfireauth.util.isNativeEnvironment = function() {\n  var environment = fireauth.util.getEnvironment();\n  return environment === fireauth.util.Env.REACT_NATIVE ||\n      environment === fireauth.util.Env.NODE;\n};\n\n\n/**\n * The separator for storage keys to concatenate App name and API key.\n * @const {string}\n * @private\n */\nfireauth.util.STORAGE_KEY_SEPARATOR_ = ':';\n\n\n/**\n * @param {string} apiKey The API Key of the app.\n * @param {string} appName The App name.\n * @return {string} The key used for identifying the app owner of the user.\n */\nfireauth.util.createStorageKey = function(apiKey, appName) {\n  return apiKey + fireauth.util.STORAGE_KEY_SEPARATOR_ + appName;\n};\n\n\n/** @return {string} a long random character string. */\nfireauth.util.generateRandomString = function() {\n  return Math.floor(Math.random() * 1000000000).toString();\n};\n\n\n/**\n * Generates a random alpha numeric string.\n * @param {number} numOfChars The number of random characters within the string.\n * @return {string} A string with a specific number of random characters.\n */\nfireauth.util.generateRandomAlphaNumericString = function(numOfChars) {\n  var chars = [];\n  var allowedChars =\n      '1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';\n  while (numOfChars > 0) {\n    chars.push(\n        allowedChars.charAt(\n            Math.floor(Math.random() * allowedChars.length)));\n    numOfChars--;\n  }\n  return chars.join('');\n};\n\n\n/**\n * Enums for Browser name.\n * @enum {string}\n */\nfireauth.util.BrowserName = {\n  ANDROID: 'Android',\n  BLACKBERRY: 'Blackberry',\n  EDGE: 'Edge',\n  FIREFOX: 'Firefox',\n  IE: 'IE',\n  IEMOBILE: 'IEMobile',\n  OPERA: 'Opera',\n  OTHER: 'Other',\n  CHROME: 'Chrome',\n  SAFARI: 'Safari',\n  SILK: 'Silk',\n  WEBOS: 'Webos'\n};\n\n\n/**\n * @param {string} userAgent The navigator user agent string.\n * @return {string} The browser name, eg Safari, Firefox, etc.\n */\nfireauth.util.getBrowserName = function(userAgent) {\n  var ua = userAgent.toLowerCase();\n  if (goog.string.contains(ua, 'opera/') ||\n      goog.string.contains(ua, 'opr/') ||\n      goog.string.contains(ua, 'opios/')) {\n    return fireauth.util.BrowserName.OPERA;\n  } else if (goog.string.contains(ua, 'iemobile')) {\n    // Windows phone IEMobile browser.\n    return fireauth.util.BrowserName.IEMOBILE;\n  } else if (goog.string.contains(ua, 'msie') ||\n             goog.string.contains(ua, 'trident/')) {\n    return fireauth.util.BrowserName.IE;\n  } else if (goog.string.contains(ua, 'edge/')) {\n    return fireauth.util.BrowserName.EDGE;\n  } else if (goog.string.contains(ua, 'firefox/')) {\n    return fireauth.util.BrowserName.FIREFOX;\n  } else if (goog.string.contains(ua, 'silk/')) {\n    return fireauth.util.BrowserName.SILK;\n  } else if (goog.string.contains(ua, 'blackberry')) {\n    // Blackberry browser.\n    return fireauth.util.BrowserName.BLACKBERRY;\n  } else if (goog.string.contains(ua, 'webos')) {\n    // WebOS default browser.\n    return fireauth.util.BrowserName.WEBOS;\n  } else if (goog.string.contains(ua, 'safari/') &&\n             !goog.string.contains(ua, 'chrome/') &&\n             !goog.string.contains(ua, 'crios/') &&\n             !goog.string.contains(ua, 'android')) {\n    return fireauth.util.BrowserName.SAFARI;\n  } else if ((goog.string.contains(ua, 'chrome/') ||\n              goog.string.contains(ua, 'crios/')) &&\n             !goog.string.contains(ua, 'edge/')) {\n    return fireauth.util.BrowserName.CHROME;\n  } else if (goog.string.contains(ua, 'android')) {\n    // Android stock browser.\n    return fireauth.util.BrowserName.ANDROID;\n  } else {\n    // Most modern browsers have name/version at end of user agent string.\n    var re = new RegExp('([a-zA-Z\\\\d\\\\.]+)\\/[a-zA-Z\\\\d\\\\.]*$');\n    var matches = userAgent.match(re);\n    if (matches && matches.length == 2) {\n      return matches[1];\n    }\n  }\n  return fireauth.util.BrowserName.OTHER;\n};\n\n\n/**\n * Enums for client implementation name.\n * @enum {string}\n */\nfireauth.util.ClientImplementation = {\n  JSCORE: 'JsCore',\n  OAUTH_HANDLER: 'Handler',\n  OAUTH_IFRAME: 'Iframe'\n};\n\n\n/**\n * Enums for the framework ID to be logged in RPC header.\n * Future frameworks to possibly add: angularfire, polymerfire, reactfire, etc.\n * @enum {string}.\n */\nfireauth.util.Framework = {\n  // No other framework used.\n  DEFAULT: 'FirebaseCore-web',\n  // Firebase Auth used with FirebaseUI-web.\n  FIREBASEUI: 'FirebaseUI-web'\n};\n\n\n/**\n * @param {!Array<string>} providedFrameworks List of framework ID strings.\n * @return {!Array<!fireauth.util.Framework>} List of supported framework IDs\n *     with no duplicates.\n */\nfireauth.util.getFrameworkIds = function(providedFrameworks) {\n  var frameworkVersion = [];\n  var frameworkSet = {};\n  for (var key in fireauth.util.Framework) {\n    frameworkSet[fireauth.util.Framework[key]] = true;\n  }\n  for (var i = 0; i < providedFrameworks.length; i++) {\n    if (typeof frameworkSet[providedFrameworks[i]] !== 'undefined') {\n      // Delete it from set to prevent duplications.\n      delete frameworkSet[providedFrameworks[i]];\n      frameworkVersion.push(providedFrameworks[i]);\n    }\n  }\n  // Sort alphabetically so that \"FirebaseCore-web,FirebaseUI-web\" and\n  // \"FirebaseUI-web,FirebaseCore-web\" aren't viewed as different.\n  frameworkVersion.sort();\n  return frameworkVersion;\n};\n\n\n/**\n * @param {!fireauth.util.ClientImplementation} clientImplementation The client\n *     implementation.\n * @param {string} clientVersion The client version.\n * @param {?Array<string>=} opt_frameworkVersion The framework version.\n * @param {?string=} opt_userAgent The optional user agent.\n * @return {string} The full client SDK version.\n */\nfireauth.util.getClientVersion = function(clientImplementation, clientVersion,\n    opt_frameworkVersion, opt_userAgent) {\n  var frameworkVersion = fireauth.util.getFrameworkIds(\n      opt_frameworkVersion || []);\n  if (!frameworkVersion.length) {\n    frameworkVersion = [fireauth.util.Framework.DEFAULT];\n  }\n  var environment = fireauth.util.getEnvironment();\n  var reportedEnvironment = '';\n  if (environment === fireauth.util.Env.BROWSER) {\n    // In a browser environment, report the browser name.\n    var userAgent = opt_userAgent || fireauth.util.getUserAgentString();\n    reportedEnvironment = fireauth.util.getBrowserName(userAgent);\n  } else if (environment === fireauth.util.Env.WORKER) {\n    // Technically a worker runs from a browser but we need to differentiate a\n    // worker from a browser.\n    // For example: Chrome-Worker/JsCore/4.9.1/FirebaseCore-web.\n    var userAgent = opt_userAgent || fireauth.util.getUserAgentString();\n    reportedEnvironment = fireauth.util.getBrowserName(userAgent) + '-' +\n        environment;\n  } else {\n    // Otherwise, just report the environment name.\n    reportedEnvironment = environment;\n  }\n  // The format to be followed:\n  // ${browserName}/${clientImplementation}/${clientVersion}/${frameworkVersion}\n  // As multiple Firebase frameworks/libraries can be used, join their IDs with\n  // a comma.\n  return reportedEnvironment + '/' + clientImplementation +\n      '/' + clientVersion + '/' + frameworkVersion.join(',');\n};\n\n\n/**\n * @return {string} The user agent string reported by the environment, or the\n *     empty string if not available.\n */\nfireauth.util.getUserAgentString = function() {\n  return (goog.global['navigator'] && goog.global['navigator']['userAgent']) ||\n      '';\n};\n\n\n/**\n * @param {string} varStrName The variable string name.\n * @param {?Object=} opt_scope The optional scope where to look in. The default\n *     is window.\n * @return {*} The reference if found.\n */\nfireauth.util.getObjectRef = function(varStrName, opt_scope) {\n  var pieces = varStrName.split('.');\n  var last = opt_scope || goog.global;\n  for (var i = 0;\n       i < pieces.length && typeof last == 'object' && last != null;\n       i++) {\n    last = last[pieces[i]];\n  }\n  // Last hasn't reached the end yet, return undefined.\n  if (i != pieces.length) {\n    last = undefined;\n  }\n  return last;\n};\n\n\n/** @return {boolean} Whether web storage is supported. */\nfireauth.util.isWebStorageSupported = function() {\n  try {\n    var storage = goog.global['localStorage'];\n    var key = fireauth.util.generateEventId();\n    if (storage) {\n      // setItem will throw an exception if we cannot access WebStorage (e.g.,\n      // Safari in private mode).\n      storage['setItem'](key, '1');\n      storage['removeItem'](key);\n      // For browsers where iframe web storage does not synchronize with a popup\n      // of the same domain, indexedDB is used for persistent storage. These\n      // browsers include IE11 and Edge.\n      // Make sure it is supported (IE11 and Edge private mode does not support\n      // that).\n      if (fireauth.util.isLocalStorageNotSynchronized()) {\n        // In such browsers, if indexedDB is not supported, an iframe cannot be\n        // notified of the popup sign in result.\n        return !!goog.global['indexedDB'];\n      }\n      return true;\n    }\n  } catch (e) {\n    // localStorage is not available from a worker. Test availability of\n    // indexedDB.\n    return fireauth.util.isWorker() && !!goog.global['indexedDB'];\n  }\n  return false;\n};\n\n\n/**\n * This guards against leaking Cordova support before official launch.\n * This field will be removed or updated to return true when the new feature is\n * ready for launch.\n * @return {boolean} Whether Cordova OAuth support is enabled.\n */\nfireauth.util.isCordovaOAuthEnabled = function() {\n  return false;\n};\n\n\n/**\n * @return {boolean} Whether popup and redirect operations are supported in the\n *     current environment.\n */\nfireauth.util.isPopupRedirectSupported = function() {\n  // Popup and redirect are supported in an environment where the container\n  // origin can be securely whitelisted.\n  return (fireauth.util.isHttpOrHttps() ||\n          fireauth.util.isChromeExtension() ||\n          fireauth.util.isAndroidOrIosCordovaScheme()) &&\n         // React Native with remote debugging reports its location.protocol as\n         // http.\n         !fireauth.util.isNativeEnvironment() &&\n         // Local storage has to be supported for browser popup and redirect\n         // operations to work.\n         fireauth.util.isWebStorageSupported() &&\n         // DOM, popups and redirects are not supported within a worker.\n         !fireauth.util.isWorker();\n};\n\n\n/**\n * @return {boolean} Whether the current environment is http or https.\n */\nfireauth.util.isHttpOrHttps = function() {\n  return fireauth.util.getCurrentScheme() === 'http:' ||\n       fireauth.util.getCurrentScheme() === 'https:';\n};\n\n\n/** @return {?string} The current URL scheme. */\nfireauth.util.getCurrentScheme = function() {\n  return (goog.global['location'] && goog.global['location']['protocol']) ||\n      null;\n};\n\n\n/**\n * Checks whether the current page is a Chrome extension.\n * @return {boolean} Whether the current page is a Chrome extension.\n */\nfireauth.util.isChromeExtension = function() {\n  return fireauth.util.getCurrentScheme() === 'chrome-extension:';\n};\n\n\n/**\n * @param {?string=} opt_userAgent The optional user agent.\n * @return {boolean} Whether the current browser is running in an iOS\n *     environment.\n */\nfireauth.util.isIOS = function(opt_userAgent) {\n  var ua = opt_userAgent || fireauth.util.getUserAgentString();\n  return !!ua.toLowerCase().match(/iphone|ipad|ipod/);\n};\n\n\n/**\n * @param {?string=} opt_userAgent The optional user agent.\n * @return {boolean} Whether the current browser is running in an Android\n *     environment.\n */\nfireauth.util.isAndroid = function(opt_userAgent) {\n  var ua = opt_userAgent || fireauth.util.getUserAgentString();\n  return !!ua.toLowerCase().match(/android/);\n};\n\n\n/**\n * @param {?string=} opt_userAgent The optional user agent.\n * @return {boolean} Whether the opener of a popup cannot communicate with the\n *     popup while it is in the foreground.\n */\nfireauth.util.runsInBackground = function(opt_userAgent) {\n  // TODO: split this check into 2, one check that opener can access\n  // popup, another check that storage synchronizes between popup and opener.\n  // Popup events fail in iOS version 7 (lowest version we currently support)\n  // browsers. When the popup is triggered, the opener is unable to redirect\n  // the popup url, close the popup and in some cases will miss the storage\n  // event triggered when localStorage is changed.\n  // Extend this to all mobile devices. This behavior is more likely to work\n  // cross mobile platforms.\n  var ua = opt_userAgent || fireauth.util.getUserAgentString();\n  if (fireauth.util.isMobileBrowser(ua)) {\n    return false;\n  } else if (fireauth.util.getBrowserName(ua) ==\n             fireauth.util.BrowserName.FIREFOX) {\n    // Latest version of Firefox 47.0 does not allow you to access properties on\n    // the popup window from the opener.\n    return false;\n  }\n  return true;\n};\n\n\n/**\n * Stringifies an object, retuning null if the object is not defined.\n * @param {*} obj The raw object.\n * @return {?string} The JSON-serialized object.\n */\nfireauth.util.stringifyJSON = function(obj) {\n  if (typeof obj === 'undefined') {\n    return null;\n  }\n  return goog.json.serialize(obj);\n};\n\n\n/**\n * @param {!Object} obj The original object.\n * @return {!Object} A copy of the original object with all entries that are\n *     null or undefined removed.\n */\nfireauth.util.copyWithoutNullsOrUndefined = function(obj) {\n  // The processed copy to return.\n  var trimmedObj = {};\n  // Remove all empty fields from data, allow zero and false booleans.\n  for (var key in obj) {\n    if (obj.hasOwnProperty(key) &&\n        obj[key] !== null &&\n        obj[key] !== undefined) {\n      trimmedObj[key] = obj[key];\n    }\n  }\n  return trimmedObj;\n};\n\n\n/**\n * Removes all key/pairs with the specified keys from the given object.\n * @param {!Object} obj The object to process.\n * @param {!Array<string>} keys The list of keys to remove.\n * @return {!Object} The object with the keys removed.\n */\nfireauth.util.removeEntriesWithKeys = function(obj, keys) {\n  // Clone object.\n  var copy = goog.object.clone(obj);\n  // Traverse keys.\n  for (var i = 0; i < keys.length; i++) {\n    var key = keys[i];\n    // If key found in object, remove it.\n    if (key in copy) {\n      delete copy[key];\n    }\n  }\n  // Returned filtered copy.\n  return copy;\n};\n\n\n/**\n * Parses a JSON string, returning undefined if null is passed.\n * @param {?string} json The JSON-serialized object.\n * @return {*} The raw object.\n */\nfireauth.util.parseJSON = function(json) {\n  if (json === null) {\n    return undefined;\n  }\n\n  // Do not use goog.json.parse since it uses eval underneath to support old\n  // browsers that do not provide JSON.parse. The recommended Content Security\n  // Policy does not allow unsafe-eval in some environments like Chrome\n  // extensions. Usage of eval is not recommend in Chrome in general.\n  // Use native parsing instead via JSON.parse. This is provided in our list\n  // of supported browsers.\n  return JSON.parse(json);\n};\n\n\n/**\n * @param {?string=} opt_prefix An optional prefix string to prepend to ID.\n * @return {string} The generated event ID used to identify a generic event.\n */\nfireauth.util.generateEventId = function(opt_prefix) {\n  return opt_prefix ? opt_prefix : '' +\n      Math.floor(Math.random() * 1000000000).toString();\n};\n\n\n/**\n * @param {?string=} opt_userAgent The optional user agent.\n * @return {boolean} Whether an embedded iframe can sync to web storage changes.\n *     Web storage sync fails in Safari desktop browsers and iOS mobile\n *     browsers.\n */\nfireauth.util.iframeCanSyncWebStorage = function(opt_userAgent) {\n  var ua = opt_userAgent || fireauth.util.getUserAgentString();\n  if (fireauth.util.getBrowserName(ua) == fireauth.util.BrowserName.SAFARI ||\n      ua.toLowerCase().match(/iphone|ipad|ipod/)) {\n    return false;\n  }\n  return true;\n};\n\n\n/**\n * Reset unlaoded GApi modules. If gapi.load fails due to a network error,\n * it will stop working after a retrial. This is a hack to fix this issue.\n */\nfireauth.util.resetUnloadedGapiModules = function() {\n  // Clear last failed gapi.load state to force next gapi.load to first\n  // load the failed gapi.iframes module.\n  // Get gapix.beacon context.\n  var beacon = goog.global['___jsl'];\n  // Get current hint.\n  if (beacon && beacon['H']) {\n    // Get gapi hint.\n    for (var hint in beacon['H']) {\n      // Requested modules.\n      beacon['H'][hint]['r'] = beacon['H'][hint]['r'] || [];\n      // Loaded modules.\n      beacon['H'][hint]['L'] = beacon['H'][hint]['L'] || [];\n      // Set requested modules to a copy of the loaded modules.\n      beacon['H'][hint]['r'] = beacon['H'][hint]['L'].concat();\n      // Clear pending callbacks.\n      if (beacon['CP']) {\n        for (var i = 0; i < beacon['CP'].length; i++) {\n          // Remove all failed pending callbacks.\n          beacon['CP'][i] = null;\n        }\n      }\n    }\n  }\n};\n\n\n/**\n * Returns whether the current device is a mobile device. Mobile browsers and\n * React-Native environments are considered mobile devices.\n * @param {?string=} opt_userAgent The optional navigator user agent.\n * @param {?fireauth.util.Env=} opt_env The optional environment.\n * @return {boolean} Whether the current device is a mobile device or not.\n */\nfireauth.util.isMobileDevice = function(opt_userAgent, opt_env) {\n  // Get user agent.\n  var ua = opt_userAgent || fireauth.util.getUserAgentString();\n  // Get environment.\n  var environment = opt_env || fireauth.util.getEnvironment();\n  return fireauth.util.isMobileBrowser(ua) ||\n      environment === fireauth.util.Env.REACT_NATIVE;\n};\n\n\n/**\n * @param {?Object=} opt_navigator The optional navigator object typically used\n *     for testing.\n * @return {boolean} Whether the app is currently online. If offline, false is\n *     returned. If this cannot be determined, true is returned.\n */\nfireauth.util.isOnline = function(opt_navigator) {\n  var navigator = opt_navigator || goog.global['navigator'];\n  if (navigator &&\n      typeof navigator['onLine'] === 'boolean' &&\n      // Apply only for traditional web apps and Chrome extensions.\n      // This is especially true for Cordova apps which have unreliable\n      // navigator.onLine behavior unless cordova-plugin-network-information is\n      // installed which overwrites the native navigator.onLine value and\n      // defines navigator.connection.\n      (fireauth.util.isHttpOrHttps() ||\n       fireauth.util.isChromeExtension() ||\n       typeof navigator['connection'] !== 'undefined')) {\n    return navigator['onLine'];\n  }\n  // If we can't determine the state, assume it is online.\n  return true;\n};\n\n\n/**\n * @param {?Object=} opt_navigator The object with navigator data, defaulting\n *     to window.navigator if unspecified.\n * @return {?string} The user's preferred language. Returns null if\n */\nfireauth.util.getUserLanguage = function(opt_navigator) {\n  var navigator = opt_navigator || goog.global['navigator'];\n  if (!navigator) {\n    return null;\n  }\n  return (\n      // Most reliable, but only supported in Chrome/Firefox.\n      navigator['languages'] && navigator['languages'][0] ||\n      // Supported in most browsers, but returns the language of the browser\n      // UI, not the language set in browser settings.\n      navigator['language'] ||\n      // IE <= 10.\n      navigator['userLanguage'] ||\n      // Couldn't determine language.\n      null\n  );\n};\n\n\n/**\n * A structure to help pick between a range of long and short delay durations\n * depending on the current environment. In general, the long delay is used for\n * mobile environments whereas short delays are used for desktop environments.\n * @param {number} shortDelay The short delay duration.\n * @param {number} longDelay The long delay duration.\n * @param {?string=} opt_userAgent The optional navigator user agent.\n * @param {?fireauth.util.Env=} opt_env The optional environment.\n * @constructor\n */\nfireauth.util.Delay = function(shortDelay, longDelay, opt_userAgent, opt_env) {\n  // Internal error when improperly initialized.\n  if (shortDelay > longDelay) {\n    throw new Error('Short delay should be less than long delay!');\n  }\n  /**\n   * @private @const {number} The short duration delay used for desktop\n   *     environments.\n   */\n  this.shortDelay_ = shortDelay;\n  /**\n   * @private @const {number} The long duration delay used for mobile\n   *     environments.\n   */\n  this.longDelay_ = longDelay;\n  /** @private @const {boolean} Whether the environment is a mobile one. */\n  this.isMobile_ = fireauth.util.isMobileDevice(opt_userAgent, opt_env);\n};\n\n\n/**\n * The default value for the offline delay timeout in ms.\n * @const {number}\n * @private\n */\nfireauth.util.Delay.OFFLINE_DELAY_MS_ = 5000;\n\n\n/**\n * @return {number} The delay that matches with the current environment.\n */\nfireauth.util.Delay.prototype.get = function() {\n  // navigator.onLine is unreliable in some cases.\n  // Failing hard in those cases may make it impossible to recover for end user.\n  // Waiting for the regular full duration when there is no network can result\n  // in a bad experience.\n  // Instead return a short timeout duration. If there is no network connection,\n  // the user would wait 5 seconds to detect that. If there is a connection\n  // (false alert case), the user still has the ability to try to send the\n  // request. If it fails (timeout too short), they can still retry.\n  if (!fireauth.util.isOnline()) {\n    // Pick the shorter timeout.\n    return Math.min(fireauth.util.Delay.OFFLINE_DELAY_MS_, this.shortDelay_);\n  }\n  // If running in a mobile environment, return the long delay, otherwise\n  // return the short delay.\n  // This could be improved in the future to dynamically change based on other\n  // variables instead of just reading the current environment.\n  return this.isMobile_ ? this.longDelay_ : this.shortDelay_;\n};\n\n\n/**\n * @return {boolean} Whether the app is visible in the foreground. This uses\n *     document.visibilityState. For browsers that do not support it, this is\n *     always true.\n */\nfireauth.util.isAppVisible = function() {\n  // https://developer.mozilla.org/en-US/docs/Web/API/Document/visibilityState\n  var doc = goog.global.document;\n  // Check if supported.\n  if (doc && typeof doc['visibilityState'] !== 'undefined') {\n    // Check if visible.\n    return doc['visibilityState'] == 'visible';\n  }\n  // API not supported in current browser, default to true.\n  return true;\n};\n\n\n/**\n * @return {!goog.Promise} A promise that resolves when the app is visible in\n *     the foreground.\n */\nfireauth.util.onAppVisible = function() {\n  var doc = goog.global.document;\n  // Visibility change listener reference.\n  var onVisibilityChange = null;\n  if (fireauth.util.isAppVisible() || !doc) {\n    // Visible or non browser environment.\n    return goog.Promise.resolve();\n  } else {\n    // Invisible and in browser environment.\n    return new goog.Promise(function(resolve, reject) {\n      // On visibility change listener.\n      onVisibilityChange = function(event) {\n        // App is visible.\n        if (fireauth.util.isAppVisible()) {\n          // Unregister event listener.\n          doc.removeEventListener(\n              'visibilitychange', onVisibilityChange, false);\n          // Resolve promise.\n          resolve();\n        }\n      };\n      // Listen to visibility change.\n      doc.addEventListener('visibilitychange', onVisibilityChange, false);\n    }).thenCatch(function(error) {\n      // In case this promise was cancelled, make sure it unlistens to\n      // visibilitychange event.\n      doc.removeEventListener('visibilitychange', onVisibilityChange, false);\n      // Rethrow the same error.\n      throw error;\n    });\n  }\n};\n\n\n/**\n * Logs a warning message to the console, if the console is available.\n * @param {string} message\n */\nfireauth.util.consoleWarn = function(message) {\n  if (typeof console !== 'undefined' && typeof console.warn === 'function') {\n    console.warn(message);\n  }\n};\n\n\n/**\n * Logs an info message to the console, if the console is available.\n * @param {string} message\n */\nfireauth.util.consoleInfo = function(message) {\n  if (typeof console !== 'undefined' && typeof console.info === 'function') {\n    console.info(message);\n  }\n};\n\n\n/**\n * Parses a UTC time stamp string or number and returns the corresponding UTC\n * date string if valid. Otherwise, returns null.\n * @param {?string|number} utcTimestamp The UTC timestamp number or string.\n * @return {?string} The corresponding UTC date string. Null if invalid.\n */\nfireauth.util.utcTimestampToDateString = function(utcTimestamp) {\n  try {\n    // Convert to date object.\n    var date = new Date(parseInt(utcTimestamp, 10));\n    // Test date is valid.\n    if (!isNaN(date.getTime()) &&\n        // Confirm that utcTimestamp is numeric.\n        goog.string.isNumeric(utcTimestamp)) {\n      // Convert to UTC date string.\n      return date.toUTCString();\n    }\n  } catch (e) {\n    // Do nothing. null will be returned.\n  }\n  return null;\n};\n\n\n/** @return {boolean} Whether indexedDB is available. */\nfireauth.util.isIndexedDBAvailable = function() {\n  return !!goog.global['indexedDB'];\n};\n\n\n/** @return {boolean} Whether current mode is Auth handler or iframe. */\nfireauth.util.isAuthHandlerOrIframe = function() {\n  return !!(fireauth.util.getObjectRef('fireauth.oauthhelper', goog.global) ||\n            fireauth.util.getObjectRef('fireauth.iframe', goog.global));\n};\n\n\n/** @return {boolean} Whether indexedDB is used to persist storage. */\nfireauth.util.persistsStorageWithIndexedDB = function() {\n  // This will cover:\n  // IE11, Edge when indexedDB is available (this is unavailable in InPrivate\n  // mode). (SDK, OAuth handler and iframe)\n  // Any environment where indexedDB is available (SDK only).\n\n  // In a browser environment, when an iframe and a popup web storage are not\n  // synchronized, use the indexedDB fireauth.storage.Storage implementation.\n  return (fireauth.util.isLocalStorageNotSynchronized() ||\n          !fireauth.util.isAuthHandlerOrIframe()) &&\n         fireauth.util.isIndexedDBAvailable();\n};\n\n\n/** Sets the no-referrer meta tag in the document head if applicable. */\nfireauth.util.setNoReferrer = function() {\n  var doc = goog.global.document;\n  if (doc) {\n    try {\n      var meta = goog.dom.createDom(goog.dom.TagName.META, {\n        'name': 'referrer',\n        'content': 'no-referrer'\n      });\n      var headCollection = goog.dom.getElementsByTagName(goog.dom.TagName.HEAD);\n      // Append meta tag to head.\n      if (headCollection.length) {\n        headCollection[0].appendChild(meta);\n      }\n    } catch (e) {\n      // Best effort approach.\n    }\n  }\n};\n\n\n/** @return {?ServiceWorker} The servicerWorker controller if available. */\nfireauth.util.getServiceWorkerController = function() {\n  var navigator = goog.global['navigator'];\n  return (navigator &&\n          navigator.serviceWorker &&\n          navigator.serviceWorker.controller) || null;\n};\n\n\n/** @return {?WorkerGlobalScope} The worker global scope if available. */\nfireauth.util.getWorkerGlobalScope = function() {\n  return fireauth.util.isWorker() ? /** @type {!WorkerGlobalScope} */ (self) :\n      null;\n};\n\n/**\n * @return {!goog.Promise<?ServiceWorker>} A promise that resolves with the\n *     service worker. This will resolve only when a service worker becomes\n *     available. If no service worker is supported, it will resolve with null.\n */\nfireauth.util.getActiveServiceWorker = function() {\n  var navigator = goog.global['navigator'];\n  if (navigator && navigator.serviceWorker) {\n    return goog.Promise.resolve()\n        .then(function() {\n          return navigator.serviceWorker.ready;\n        })\n        .then(function(registration) {\n          return /** @type {?ServiceWorker} */ (registration.active || null);\n        })\n        .thenCatch(function(error) {\n          return null;\n        });\n  }\n  return goog.Promise.resolve(/** @type {?ServiceWorker} */ (null));\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Utilities for window manipulation.\n */\n\n\ngoog.provide('goog.window');\n\ngoog.require('goog.dom');\ngoog.require('goog.dom.TagName');\ngoog.require('goog.dom.safe');\ngoog.require('goog.html.SafeUrl');\ngoog.require('goog.html.uncheckedconversions');\ngoog.require('goog.labs.userAgent.platform');\ngoog.require('goog.string');\ngoog.require('goog.string.Const');\ngoog.require('goog.userAgent');\ngoog.requireType('goog.string.TypedString');\n\n\n/**\n * Default height for popup windows\n * @type {number}\n */\ngoog.window.DEFAULT_POPUP_HEIGHT = 500;\n\n\n/**\n * Default width for popup windows\n * @type {number}\n */\ngoog.window.DEFAULT_POPUP_WIDTH = 690;\n\n\n/**\n * Default target for popup windows\n * @type {string}\n */\ngoog.window.DEFAULT_POPUP_TARGET = 'google_popup';\n\n\n/**\n * @return {!Window}\n * @suppress {checkTypes}\n * @private\n */\ngoog.window.createFakeWindow_ = function() {\n  'use strict';\n  return /** @type {!Window} */ ({});\n};\n\n/**\n * Opens a new window.\n *\n * @param {!goog.html.SafeUrl|string|!Object|null} linkRef If an Object with an\n *     'href' attribute (such as HTMLAnchorElement) is passed then the value of\n *     'href' is used, otherwise its toString method is called. Note that if a\n *     string|Object is used, it will be sanitized with SafeUrl.sanitize().\n *\n * @param {?Object=} opt_options supports the following options:\n *  'target': (string) target (window name). If null, linkRef.target will\n *      be used.\n *  'width': (number) window width.\n *  'height': (number) window height.\n *  'top': (number) distance from top of screen\n *  'left': (number) distance from left of screen\n *  'toolbar': (boolean) show toolbar\n *  'scrollbars': (boolean) show scrollbars\n *  'location': (boolean) show location\n *  'statusbar': (boolean) show statusbar\n *  'menubar': (boolean) show menubar\n *  'resizable': (boolean) resizable\n *  'noreferrer': (boolean) whether to attempt to remove the referrer header\n *      from the request headers. Does this by opening a blank window that\n *      then redirects to the target url, so users may see some flickering.\n *  'noopener': (boolean) whether to remove the `opener` property from the\n *      window object of the newly created window. The property contains a\n *      reference to the original window, and can be used to launch a\n *      reverse tabnabbing attack.\n *\n * @param {?Window=} opt_parentWin Parent window that should be used to open the\n *                 new window.\n *\n * @return {?Window} Returns the window object that was opened. This returns\n *                  null if a popup blocker prevented the window from being\n *                  opened. In case when a new window is opened in a different\n *                  browser sandbox (such as iOS standalone mode), the returned\n *                  object is a emulated Window object that functions as if\n *                  a cross-origin window has been opened.\n */\ngoog.window.open = function(linkRef, opt_options, opt_parentWin) {\n  'use strict';\n  if (!opt_options) {\n    opt_options = {};\n  }\n  var parentWin = opt_parentWin || window;\n\n  /** @type {!goog.html.SafeUrl} */\n  var safeLinkRef;\n\n  if (linkRef instanceof goog.html.SafeUrl) {\n    safeLinkRef = linkRef;\n  } else {\n    // HTMLAnchorElement has a toString() method with the same behavior as\n    // goog.Uri in all browsers except for Safari, which returns\n    // '[object HTMLAnchorElement]'.  We check for the href first, then\n    // assume that it's a goog.Uri or String otherwise.\n    /**\n     * @type {string|!goog.string.TypedString}\n     * @suppress {missingProperties}\n     */\n    var url =\n        typeof linkRef.href != 'undefined' ? linkRef.href : String(linkRef);\n    safeLinkRef = goog.html.SafeUrl.sanitize(url);\n  }\n\n  /** @suppress {missingProperties} loose references to 'target' */\n  /** @suppress {strictMissingProperties} */\n  var target = opt_options.target || linkRef.target;\n\n  var sb = [];\n  for (var option in opt_options) {\n    switch (option) {\n      case 'width':\n      case 'height':\n      case 'top':\n      case 'left':\n        sb.push(option + '=' + opt_options[option]);\n        break;\n      case 'target':\n      case 'noopener':\n      case 'noreferrer':\n        break;\n      default:\n        sb.push(option + '=' + (opt_options[option] ? 1 : 0));\n    }\n  }\n  var optionString = sb.join(',');\n\n  var newWin;\n  if (goog.labs.userAgent.platform.isIos() && parentWin.navigator &&\n      parentWin.navigator['standalone'] && target && target != '_self') {\n    // iOS in standalone mode disregards \"target\" in window.open and always\n    // opens new URL in the same window. The workaround is to create an \"A\"\n    // element and send a click event to it.\n    // Notice that the \"A\" tag does NOT have to be added to the DOM.\n\n    var a = goog.dom.createElement(goog.dom.TagName.A);\n    goog.dom.safe.setAnchorHref(a, safeLinkRef);\n\n    a.setAttribute('target', target);\n    if (opt_options['noreferrer']) {\n      a.setAttribute('rel', 'noreferrer');\n    }\n\n    var click = /** @type {!MouseEvent} */ (document.createEvent('MouseEvent'));\n    click.initMouseEvent(\n        'click',\n        true,  // canBubble\n        true,  // cancelable\n        parentWin,\n        1);  // detail = mousebutton\n    a.dispatchEvent(click);\n    // New window is not available in this case. Instead, a fake Window object\n    // is returned. In particular, it will have window.document undefined. In\n    // general, it will appear to most of clients as a Window for a different\n    // origin. Since iOS standalone web apps are run in their own sandbox, this\n    // is the most appropriate return value.\n    newWin = goog.window.createFakeWindow_();\n  } else if (opt_options['noreferrer']) {\n    // This code used to use meta-refresh to stop the referrer from being\n    // included in the request headers. This was the only cross-browser way\n    // to remove the referrer circa 2009. However, this never worked in Chrome,\n    // and, instead newWin.opener had to be set to null on this browser. This\n    // behavior is slated to be removed in Chrome and should not be relied\n    // upon. Referrer Policy is the only spec'd and supported way of stripping\n    // referrers and works across all current browsers. This is used in\n    // addition to the aforementioned tricks.\n    //\n    // We also set the opener to be set to null in the new window, thus\n    // disallowing the opened window from navigating its opener.\n    //\n    // Detecting user agent and then using a different strategy per browser\n    // would allow the referrer to leak in case of an incorrect/missing user\n    // agent.\n    newWin = goog.dom.safe.openInWindow('', parentWin, target, optionString);\n\n    var sanitizedLinkRef = goog.html.SafeUrl.unwrap(safeLinkRef);\n    if (newWin) {\n      if (goog.userAgent.EDGE_OR_IE) {\n        // IE/EDGE can't parse the content attribute if the url contains\n        // a semicolon. We can fix this by adding quotes around the url, but\n        // then we can't parse quotes in the URL correctly. We take a\n        // best-effort approach.\n        //\n        // If the URL has semicolons, wrap it in single quotes to protect\n        // the semicolons.\n        // If the URL has semicolons and single quotes, url-encode the single\n        // quotes as well.\n        //\n        // This is imperfect. Notice that both ' and ; are reserved characters\n        // in URIs, so this could do the wrong thing, but at least it will\n        // do the wrong thing in only rare cases.\n        // ugh.\n        if (goog.string.contains(sanitizedLinkRef, ';')) {\n          sanitizedLinkRef = \"'\" + sanitizedLinkRef.replace(/'/g, '%27') + \"'\";\n        }\n      }\n      newWin.opener = null;\n\n      // TODO(rjamet): Building proper SafeHtml with SafeHtml.createMetaRefresh\n      // pulls in a lot of compiled code, which is composed of various unneeded\n      // goog.html parts such as SafeStyle.create among others. So, for now,\n      // keep the unchecked conversion until we figure out how to make the\n      // dependencies of createSafeHtmlTagSecurityPrivateDoNotAccessOrElse less\n      // heavy.\n      var safeHtml =\n          goog.html.uncheckedconversions\n              .safeHtmlFromStringKnownToSatisfyTypeContract(\n                  goog.string.Const.from(\n                      'b/12014412, meta tag with sanitized URL'),\n                  '<meta name=\"referrer\" content=\"no-referrer\">' +\n                      '<meta http-equiv=\"refresh\" content=\"0; url=' +\n                      goog.string.htmlEscape(sanitizedLinkRef) + '\">');\n\n      // During window loading `newWin.document` may be unset in some browsers.\n      // Storing and checking a reference to the document prevents NPEs.\n      var newDoc = newWin.document;\n      if (newDoc) {\n        goog.dom.safe.documentWrite(newDoc, safeHtml);\n        newDoc.close();\n      }\n    }\n  } else {\n    newWin = goog.dom.safe.openInWindow(\n        safeLinkRef, parentWin, target, optionString);\n    // Passing in 'noopener' into the 'windowFeatures' param of window.open(...)\n    // will yield a feature-deprived browser. This is an known issue, tracked\n    // here: https://github.com/whatwg/html/issues/1902\n    if (newWin && opt_options['noopener']) {\n      newWin.opener = null;\n    }\n  }\n  // newWin is null if a popup blocker prevented the window open.\n  return newWin;\n};\n\n\n/**\n * Opens a new window without any real content in it.\n *\n * This can be used to get around popup blockers if you need to open a window\n * in response to a user event, but need to do asynchronous work to determine\n * the URL to open, and then set the URL later.\n *\n * Example usage:\n *\n * var newWin = goog.window.openBlank('Loading...');\n * setTimeout(\n *     function() {\n *       newWin.location.href = 'http://www.google.com';\n *     }, 100);\n *\n * @param {string=} opt_message String to show in the new window. This string\n *     will be HTML-escaped to avoid XSS issues.\n * @param {?Object=} opt_options Options to open window with.\n *     {@see goog.window.open for exact option semantics}.\n * @param {?Window=} opt_parentWin Parent window that should be used to open the\n *                 new window.\n * @return {?Window} Returns the window object that was opened. This returns\n *                  null if a popup blocker prevented the window from being\n *                  opened.\n */\ngoog.window.openBlank = function(opt_message, opt_options, opt_parentWin) {\n  'use strict';\n  // Open up a window with the loading message and nothing else.\n  // This will be interpreted as HTML content type with a missing doctype\n  // and html/body tags, but is otherwise acceptable.\n  //\n  // IMPORTANT: The order of escaping is crucial here in order to avoid XSS.\n  // First, HTML-escaping is needed because the result of the JS expression\n  // is evaluated as HTML. Second, JS-string escaping is needed; this avoids\n  // \\u escaping from inserting HTML tags and \\ from escaping the final \".\n  // Finally, URL percent-encoding is done with encodeURI(); this\n  // avoids percent-encoding from bypassing HTML and JS escaping.\n  //\n  // Note: There are other ways the same result could be achieved but the\n  // current behavior was preserved when this code was refactored to use\n  // SafeUrl, in order to avoid breakage.\n  var loadingMessage;\n  if (!opt_message) {\n    loadingMessage = '';\n  } else {\n    loadingMessage =\n        goog.string.escapeString(goog.string.htmlEscape(opt_message));\n  }\n  var url = goog.html.uncheckedconversions\n                .safeUrlFromStringKnownToSatisfyTypeContract(\n                    goog.string.Const.from(\n                        'b/12014412, encoded string in javascript: URL'),\n                    'javascript:\"' + encodeURI(loadingMessage) + '\"');\n  return /** @type {?Window} */ (\n      goog.window.open(url, opt_options, opt_parentWin));\n};\n\n\n/**\n * Raise a help popup window, defaulting to \"Google standard\" size and name.\n *\n * (If your project is using GXPs, consider using {@link PopUpLink.gxp}.)\n *\n* @param {?goog.html.SafeUrl|string|?Object} linkRef If an Object with an 'href'\n *     attribute (such as HTMLAnchorElement) is passed then the value of 'href'\n *     is used, otherwise  otherwise its toString method is called. Note that\n *     if a string|Object is used, it will be sanitized with SafeUrl.sanitize().\n *\n * @param {?Object=} opt_options Options to open window with.\n *     {@see goog.window.open for exact option semantics}\n *     Additional wrinkles to the options:\n *     - if 'target' field is null, linkRef.target will be used. If *that's*\n *     null, the default is \"google_popup\".\n *     - if 'width' field is not specified, the default is 690.\n *     - if 'height' field is not specified, the default is 500.\n *\n * @return {boolean} true if the window was not popped up, false if it was.\n */\ngoog.window.popup = function(linkRef, opt_options) {\n  'use strict';\n  if (!opt_options) {\n    opt_options = {};\n  }\n\n  // set default properties\n  opt_options['target'] = opt_options['target'] || linkRef['target'] ||\n      goog.window.DEFAULT_POPUP_TARGET;\n  opt_options['width'] =\n      opt_options['width'] || goog.window.DEFAULT_POPUP_WIDTH;\n  opt_options['height'] =\n      opt_options['height'] || goog.window.DEFAULT_POPUP_HEIGHT;\n\n  var newWin = goog.window.open(linkRef, opt_options);\n  if (!newWin) {\n    return true;\n  }\n  newWin.focus();\n\n  return false;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Closure user agent platform detection.\n * @see <a href=\"http://www.useragentstring.com/\">User agent strings</a>\n * For more information on browser brand, rendering engine, or device see the\n * other sub-namespaces in goog.labs.userAgent (browser, engine, and device\n * respectively).\n */\n\ngoog.provide('goog.labs.userAgent.platform');\n\ngoog.require('goog.labs.userAgent.util');\ngoog.require('goog.string');\n\n\n/**\n * @return {boolean} Whether the platform is Android.\n */\ngoog.labs.userAgent.platform.isAndroid = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Android');\n};\n\n\n/**\n * @return {boolean} Whether the platform is iPod.\n */\ngoog.labs.userAgent.platform.isIpod = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('iPod');\n};\n\n\n/**\n * @return {boolean} Whether the platform is iPhone.\n */\ngoog.labs.userAgent.platform.isIphone = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('iPhone') &&\n      !goog.labs.userAgent.util.matchUserAgent('iPod') &&\n      !goog.labs.userAgent.util.matchUserAgent('iPad');\n};\n\n\n/**\n * @return {boolean} Whether the platform is iPad.\n */\ngoog.labs.userAgent.platform.isIpad = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('iPad');\n};\n\n\n/**\n * @return {boolean} Whether the platform is iOS.\n */\ngoog.labs.userAgent.platform.isIos = function() {\n  'use strict';\n  return goog.labs.userAgent.platform.isIphone() ||\n      goog.labs.userAgent.platform.isIpad() ||\n      goog.labs.userAgent.platform.isIpod();\n};\n\n\n/**\n * @return {boolean} Whether the platform is Mac.\n */\ngoog.labs.userAgent.platform.isMacintosh = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Macintosh');\n};\n\n\n/**\n * Note: ChromeOS is not considered to be Linux as it does not report itself\n * as Linux in the user agent string.\n * @return {boolean} Whether the platform is Linux.\n */\ngoog.labs.userAgent.platform.isLinux = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Linux');\n};\n\n\n/**\n * @return {boolean} Whether the platform is Windows.\n */\ngoog.labs.userAgent.platform.isWindows = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('Windows');\n};\n\n\n/**\n * @return {boolean} Whether the platform is ChromeOS.\n */\ngoog.labs.userAgent.platform.isChromeOS = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('CrOS');\n};\n\n/**\n * @return {boolean} Whether the platform is Chromecast.\n */\ngoog.labs.userAgent.platform.isChromecast = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgent('CrKey');\n};\n\n/**\n * @return {boolean} Whether the platform is KaiOS.\n */\ngoog.labs.userAgent.platform.isKaiOS = function() {\n  'use strict';\n  return goog.labs.userAgent.util.matchUserAgentIgnoreCase('KaiOS');\n};\n\n/**\n * The version of the platform. We only determine the version for Windows,\n * Mac, and Chrome OS. It doesn't make much sense on Linux. For Windows, we only\n * look at the NT version. Non-NT-based versions (e.g. 95, 98, etc.) are given\n * version 0.0.\n *\n * @return {string} The platform version or empty string if version cannot be\n *     determined.\n */\ngoog.labs.userAgent.platform.getVersion = function() {\n  'use strict';\n  var userAgentString = goog.labs.userAgent.util.getUserAgent();\n  var version = '', re;\n  if (goog.labs.userAgent.platform.isWindows()) {\n    re = /Windows (?:NT|Phone) ([0-9.]+)/;\n    var match = re.exec(userAgentString);\n    if (match) {\n      version = match[1];\n    } else {\n      version = '0.0';\n    }\n  } else if (goog.labs.userAgent.platform.isIos()) {\n    re = /(?:iPhone|iPod|iPad|CPU)\\s+OS\\s+(\\S+)/;\n    var match = re.exec(userAgentString);\n    // Report the version as x.y.z and not x_y_z\n    version = match && match[1].replace(/_/g, '.');\n  } else if (goog.labs.userAgent.platform.isMacintosh()) {\n    re = /Mac OS X ([0-9_.]+)/;\n    var match = re.exec(userAgentString);\n    // Note: some old versions of Camino do not report an OSX version.\n    // Default to 10.\n    version = match ? match[1].replace(/_/g, '.') : '10';\n  } else if (goog.labs.userAgent.platform.isKaiOS()) {\n    re = /(?:KaiOS)\\/(\\S+)/i;\n    var match = re.exec(userAgentString);\n    version = match && match[1];\n  } else if (goog.labs.userAgent.platform.isAndroid()) {\n    re = /Android\\s+([^\\);]+)(\\)|;)/;\n    var match = re.exec(userAgentString);\n    version = match && match[1];\n  } else if (goog.labs.userAgent.platform.isChromeOS()) {\n    re = /(?:CrOS\\s+(?:i686|x86_64)\\s+([0-9.]+))/;\n    var match = re.exec(userAgentString);\n    version = match && match[1];\n  }\n  return version || '';\n};\n\n\n/**\n * @param {string|number} version The version to check.\n * @return {boolean} Whether the browser version is higher or the same as the\n *     given version.\n */\ngoog.labs.userAgent.platform.isVersionOrHigher = function(version) {\n  'use strict';\n  return goog.string.compareVersions(\n             goog.labs.userAgent.platform.getVersion(), version) >= 0;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Unchecked conversions to create values of goog.html types from\n * plain strings.  Use of these functions could potentially result in instances\n * of goog.html types that violate their type contracts, and hence result in\n * security vulnerabilties.\n *\n * Therefore, all uses of the methods herein must be carefully security\n * reviewed.  Avoid use of the methods in this file whenever possible; instead\n * prefer to create instances of goog.html types using inherently safe builders\n * or template systems.\n *\n *\n */\n\n\ngoog.provide('goog.html.uncheckedconversions');\n\ngoog.require('goog.asserts');\ngoog.require('goog.html.SafeHtml');\ngoog.require('goog.html.SafeScript');\ngoog.require('goog.html.SafeStyle');\ngoog.require('goog.html.SafeStyleSheet');\ngoog.require('goog.html.SafeUrl');\ngoog.require('goog.html.TrustedResourceUrl');\ngoog.require('goog.string.Const');\ngoog.require('goog.string.internal');\ngoog.requireType('goog.i18n.bidi.Dir');\n\n\n/**\n * Performs an \"unchecked conversion\" to SafeHtml from a plain string that is\n * known to satisfy the SafeHtml type contract.\n *\n * IMPORTANT: Uses of this method must be carefully security-reviewed to ensure\n * that the value of `html` satisfies the SafeHtml type contract in all\n * possible program states.\n *\n *\n * @param {!goog.string.Const} justification A constant string explaining why\n *     this use of this method is safe. May include a security review ticket\n *     number.\n * @param {string} html A string that is claimed to adhere to the SafeHtml\n *     contract.\n * @param {?goog.i18n.bidi.Dir=} opt_dir The optional directionality of the\n *     SafeHtml to be constructed. A null or undefined value signifies an\n *     unknown directionality.\n * @return {!goog.html.SafeHtml} The value of html, wrapped in a SafeHtml\n *     object.\n */\ngoog.html.uncheckedconversions.safeHtmlFromStringKnownToSatisfyTypeContract =\n    function(justification, html, opt_dir) {\n  // unwrap() called inside an assert so that justification can be optimized\n  // away in production code.\n  goog.asserts.assertString(\n      goog.string.Const.unwrap(justification), 'must provide justification');\n  goog.asserts.assert(\n      !goog.string.internal.isEmptyOrWhitespace(\n          goog.string.Const.unwrap(justification)),\n      'must provide non-empty justification');\n  return goog.html.SafeHtml.createSafeHtmlSecurityPrivateDoNotAccessOrElse(\n      html, opt_dir || null);\n};\n\n\n/**\n * Performs an \"unchecked conversion\" to SafeScript from a plain string that is\n * known to satisfy the SafeScript type contract.\n *\n * IMPORTANT: Uses of this method must be carefully security-reviewed to ensure\n * that the value of `script` satisfies the SafeScript type contract in\n * all possible program states.\n *\n *\n * @param {!goog.string.Const} justification A constant string explaining why\n *     this use of this method is safe. May include a security review ticket\n *     number.\n * @param {string} script The string to wrap as a SafeScript.\n * @return {!goog.html.SafeScript} The value of `script`, wrapped in a\n *     SafeScript object.\n */\ngoog.html.uncheckedconversions.safeScriptFromStringKnownToSatisfyTypeContract =\n    function(justification, script) {\n  // unwrap() called inside an assert so that justification can be optimized\n  // away in production code.\n  goog.asserts.assertString(\n      goog.string.Const.unwrap(justification), 'must provide justification');\n  goog.asserts.assert(\n      !goog.string.internal.isEmptyOrWhitespace(\n          goog.string.Const.unwrap(justification)),\n      'must provide non-empty justification');\n  return goog.html.SafeScript.createSafeScriptSecurityPrivateDoNotAccessOrElse(\n      script);\n};\n\n\n/**\n * Performs an \"unchecked conversion\" to SafeStyle from a plain string that is\n * known to satisfy the SafeStyle type contract.\n *\n * IMPORTANT: Uses of this method must be carefully security-reviewed to ensure\n * that the value of `style` satisfies the SafeStyle type contract in all\n * possible program states.\n *\n *\n * @param {!goog.string.Const} justification A constant string explaining why\n *     this use of this method is safe. May include a security review ticket\n *     number.\n * @param {string} style The string to wrap as a SafeStyle.\n * @return {!goog.html.SafeStyle} The value of `style`, wrapped in a\n *     SafeStyle object.\n */\ngoog.html.uncheckedconversions.safeStyleFromStringKnownToSatisfyTypeContract =\n    function(justification, style) {\n  // unwrap() called inside an assert so that justification can be optimized\n  // away in production code.\n  goog.asserts.assertString(\n      goog.string.Const.unwrap(justification), 'must provide justification');\n  goog.asserts.assert(\n      !goog.string.internal.isEmptyOrWhitespace(\n          goog.string.Const.unwrap(justification)),\n      'must provide non-empty justification');\n  return goog.html.SafeStyle.createSafeStyleSecurityPrivateDoNotAccessOrElse(\n      style);\n};\n\n\n/**\n * Performs an \"unchecked conversion\" to SafeStyleSheet from a plain string\n * that is known to satisfy the SafeStyleSheet type contract.\n *\n * IMPORTANT: Uses of this method must be carefully security-reviewed to ensure\n * that the value of `styleSheet` satisfies the SafeStyleSheet type\n * contract in all possible program states.\n *\n *\n * @param {!goog.string.Const} justification A constant string explaining why\n *     this use of this method is safe. May include a security review ticket\n *     number.\n * @param {string} styleSheet The string to wrap as a SafeStyleSheet.\n * @return {!goog.html.SafeStyleSheet} The value of `styleSheet`, wrapped\n *     in a SafeStyleSheet object.\n */\ngoog.html.uncheckedconversions\n    .safeStyleSheetFromStringKnownToSatisfyTypeContract = function(\n    justification, styleSheet) {\n  // unwrap() called inside an assert so that justification can be optimized\n  // away in production code.\n  goog.asserts.assertString(\n      goog.string.Const.unwrap(justification), 'must provide justification');\n  goog.asserts.assert(\n      !goog.string.internal.isEmptyOrWhitespace(\n          goog.string.Const.unwrap(justification)),\n      'must provide non-empty justification');\n  return goog.html.SafeStyleSheet\n      .createSafeStyleSheetSecurityPrivateDoNotAccessOrElse(styleSheet);\n};\n\n\n/**\n * Performs an \"unchecked conversion\" to SafeUrl from a plain string that is\n * known to satisfy the SafeUrl type contract.\n *\n * IMPORTANT: Uses of this method must be carefully security-reviewed to ensure\n * that the value of `url` satisfies the SafeUrl type contract in all\n * possible program states.\n *\n *\n * @param {!goog.string.Const} justification A constant string explaining why\n *     this use of this method is safe. May include a security review ticket\n *     number.\n * @param {string} url The string to wrap as a SafeUrl.\n * @return {!goog.html.SafeUrl} The value of `url`, wrapped in a SafeUrl\n *     object.\n */\ngoog.html.uncheckedconversions.safeUrlFromStringKnownToSatisfyTypeContract =\n    function(justification, url) {\n  // unwrap() called inside an assert so that justification can be optimized\n  // away in production code.\n  goog.asserts.assertString(\n      goog.string.Const.unwrap(justification), 'must provide justification');\n  goog.asserts.assert(\n      !goog.string.internal.isEmptyOrWhitespace(\n          goog.string.Const.unwrap(justification)),\n      'must provide non-empty justification');\n  return goog.html.SafeUrl.createSafeUrlSecurityPrivateDoNotAccessOrElse(url);\n};\n\n\n/**\n * Performs an \"unchecked conversion\" to TrustedResourceUrl from a plain string\n * that is known to satisfy the TrustedResourceUrl type contract.\n *\n * IMPORTANT: Uses of this method must be carefully security-reviewed to ensure\n * that the value of `url` satisfies the TrustedResourceUrl type contract\n * in all possible program states.\n *\n *\n * @param {!goog.string.Const} justification A constant string explaining why\n *     this use of this method is safe. May include a security review ticket\n *     number.\n * @param {string} url The string to wrap as a TrustedResourceUrl.\n * @return {!goog.html.TrustedResourceUrl} The value of `url`, wrapped in\n *     a TrustedResourceUrl object.\n */\ngoog.html.uncheckedconversions\n    .trustedResourceUrlFromStringKnownToSatisfyTypeContract = function(\n    justification, url) {\n  // unwrap() called inside an assert so that justification can be optimized\n  // away in production code.\n  goog.asserts.assertString(\n      goog.string.Const.unwrap(justification), 'must provide justification');\n  goog.asserts.assert(\n      !goog.string.internal.isEmptyOrWhitespace(\n          goog.string.Const.unwrap(justification)),\n      'must provide non-empty justification');\n  return goog.html.TrustedResourceUrl\n      .createTrustedResourceUrlSecurityPrivateDoNotAccessOrElse(url);\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Provides utilities for displaying deprecation notices.\n */\ngoog.provide('fireauth.deprecation');\ngoog.provide('fireauth.deprecation.Deprecations');\ngoog.require('fireauth.util');\n\n\n/**\n * An enum of valid notices to display. All deprecation notices must be in this\n * enum. Deprecation messages should be unique and provide the full context\n * of what is deprecated (e.g. the fully qualified path to a method).\n * @enum {string}\n */\nfireauth.deprecation.Deprecations = {\n  LINK_WITH_CREDENTIAL: 'firebase.User.prototype.linkAndRetrieveDataWithCrede' +\n      'ntial is deprecated. Please use firebase.User.prototype.linkWithCreden' +\n      'tial instead.',\n  REAUTH_WITH_CREDENTIAL: 'firebase.User.prototype.reauthenticateAndRetrieveD' +\n      'ataWithCredential is deprecated. Please use firebase.User.prototype.re' +\n      'authenticateWithCredential instead.',\n  SIGN_IN_WITH_CREDENTIAL: 'firebase.auth.Auth.prototype.signInAndRetrieveDat' +\n      'aWithCredential is deprecated. Please use firebase.auth.Auth.prototype' +\n      '.signInWithCredential instead.'\n};\n\n\n/**\n * Keeps track of notices that were already displayed.\n * @type {!Object<fireauth.deprecation.Deprecations, boolean>}\n * @private\n */\nfireauth.deprecation.shownMessages_ = {};\n\n\n/**\n * Logs a deprecation notice to the developer.\n * @param {!fireauth.deprecation.Deprecations} message\n */\nfireauth.deprecation.log = function(message) {\n  if (fireauth.deprecation.shownMessages_[message]) {\n    return;\n  }\n  fireauth.deprecation.shownMessages_[message] = true;\n  fireauth.util.consoleWarn(message);\n};\n\n\n/**\n * Resets the displayed deprecation notices.\n */\nfireauth.deprecation.resetForTesting = function() {\n  fireauth.deprecation.shownMessages_ =\n      /** @type {!Object<fireauth.deprecation.Deprecations, boolean>} */ ({});\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Provides methods for manipulating objects.\n */\n\ngoog.provide('fireauth.object');\n\ngoog.require('fireauth.deprecation');\ngoog.require('fireauth.deprecation.Deprecations');\n\n\n/**\n * Checks whether the defineProperty method allows to change the value of\n * the property.\n * @return {boolean} Whether the defineProperty method allows to change the\n *    value of the property.\n * @private\n */\nfireauth.object.isReadonlyConfigurable_ = function() {\n  // Android 2.3 stock browser doesn't allow to change the value of\n  // a read-only property once defined.\n  try {\n    var obj = {};\n    Object.defineProperty(obj, 'abcd', {\n      configurable: true,\n      enumerable: true,\n      value: 1\n    });\n    Object.defineProperty(obj, 'abcd', {\n      configurable: true,\n      enumerable: true,\n      value: 2\n    });\n    return obj['abcd'] == 2;\n  } catch (e) {\n    return false;\n  }\n};\n\n\n/**\n * @private {boolean} Whether the defineProperty method allows to change the\n *     value of the property.\n */\nfireauth.object.readonlyConfigurable_ =\n    fireauth.object.isReadonlyConfigurable_();\n\n\n/**\n * Defines a property on an object that is not writable by clients. However, the\n * property can be overwritten within the Firebase library through subsequent\n * calls to setReadonlyProperty.\n *\n * In browsers that do not support read-only properties (notably IE8 and below),\n * fall back to writable properties.\n *\n * @param {!Object} obj The object to which we add the property.\n * @param {string} key The name of the property.\n * @param {*} value The desired value.\n */\nfireauth.object.setReadonlyProperty = function(obj, key, value) {\n  if (fireauth.object.readonlyConfigurable_) {\n    Object.defineProperty(obj, key, {\n      configurable: true,\n      enumerable: true,\n      value: value\n    });\n  } else {\n    obj[key] = value;\n  }\n};\n\n\n/**\n * Defines a deprecated property, which emits a warning if the developer tries\n * to use it.\n *\n * In browsers that do not support getters, we fall back to a normal property\n * with no message.\n *\n * @param {!Object} obj The object to which we add the property.\n * @param {string} key The name of the deprecated property.\n * @param {*} value The desired value.\n * @param {!fireauth.deprecation.Deprecations} deprecationMessage The\n *     deprecation warning to display.\n */\nfireauth.object.setDeprecatedReadonlyProperty = function(obj, key, value,\n    deprecationMessage) {\n  if (fireauth.object.readonlyConfigurable_) {\n    Object.defineProperty(obj, key, {\n      configurable: true,\n      enumerable: true,\n      get: function() {\n        fireauth.deprecation.log(deprecationMessage);\n        return value;\n      }\n    });\n  } else {\n    obj[key] = value;\n  }\n};\n\n\n/**\n * Defines properties on an object that are not writable by clients, equivalent\n * to many calls to setReadonlyProperty.\n * @param {!Object} obj The object to which we add the properties.\n * @param {?Object<string, *>} props An object that maps the keys and values\n *     that we wish to add.\n */\nfireauth.object.setReadonlyProperties = function(obj, props) {\n  if (!props) {\n    return;\n  }\n\n  for (var key in props) {\n    if (props.hasOwnProperty(key)) {\n      fireauth.object.setReadonlyProperty(obj, key, props[key]);\n    }\n  }\n};\n\n\n/**\n * Makes a shallow read-only copy of an object. The writability of any child\n * objects will not be affected.\n * @param {?Object} obj The object that we wish to copy.\n * @return {!Object}\n */\nfireauth.object.makeReadonlyCopy = function(obj) {\n  var output = {};\n  fireauth.object.setReadonlyProperties(output, obj);\n  return output;\n};\n\n\n/**\n * Makes a shallow writable copy of a read-only object. The writability of any\n * child objects will not be affected.\n * @param {?Object} obj The object that we wish to copy.\n * @return {!Object}\n */\nfireauth.object.makeWritableCopy = function(obj) {\n  var output = {};\n  for (var key in obj) {\n    if (obj.hasOwnProperty(key)) {\n      output[key] = obj[key];\n    }\n  }\n  return output;\n};\n\n\n/**\n * Returns true if the all the specified fields are present in obj and are not\n * null, undefined, or the empty string. If the field list is empty, returns\n * true regardless of the value of obj.\n * @param {?Object=} opt_obj The object.\n * @param {?Array<string>=} opt_fields The desired fields of the object.\n * @return {boolean} True if obj has all the specified fields.\n */\nfireauth.object.hasNonEmptyFields = function(opt_obj, opt_fields) {\n  if (!opt_fields || !opt_fields.length) {\n    return true;\n  }\n  if (!opt_obj) {\n    return false;\n  }\n  for (var i = 0; i < opt_fields.length; i++) {\n    var field = opt_obj[opt_fields[i]];\n    if (field === undefined || field === null || field === '') {\n      return false;\n    }\n  }\n  return true;\n};\n\n\n/**\n * Traverses the specified object and creates a read-only deep copy of it.\n * This will fail when circular references are contained within the object.\n * @param {*} obj The object to make a read-only copy from.\n * @return {*} A Read-only copy of the obj specified.\n */\nfireauth.object.unsafeCreateReadOnlyCopy = function(obj) {\n  var copy = obj;\n  if (typeof obj == 'object' && obj != null) {\n    // Make the right type of copy.\n    copy = 'length' in obj ? [] : {};\n    // Make a deep copy.\n    for (var key in obj) {\n      fireauth.object.setReadonlyProperty(\n          copy, key, fireauth.object.unsafeCreateReadOnlyCopy(obj[key]));\n    }\n  }\n  // Return the copy.\n  return copy;\n};\n\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the multi-factor enrollment information.\n */\n\ngoog.provide('fireauth.MultiFactorInfo');\ngoog.provide('fireauth.PhoneMultiFactorInfo');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.constants');\ngoog.require('fireauth.object');\n\n\n/**\n * Abstract class representing a `firebase.auth.MultiFactorInfo` interface.\n * This is typically parsed from a server response.\n * @param {?Object} resp The server response.\n * @abstract\n * @constructor\n */\nfireauth.MultiFactorInfo = function(resp) {\n  var factorId = resp && this.getFactorId(resp);\n  if (factorId && resp &&\n      resp[fireauth.MultiFactorInfo.MfaEnrollmentField.MFA_ENROLLMENT_ID]) {\n    fireauth.object.setReadonlyProperty(\n        this,\n        'uid',\n        resp[fireauth.MultiFactorInfo.MfaEnrollmentField.MFA_ENROLLMENT_ID]);\n    fireauth.object.setReadonlyProperty(\n        this,\n        'displayName',\n        resp[fireauth.MultiFactorInfo.MfaEnrollmentField.DISPLAY_NAME] || null);\n    var enrollmentTime = null;\n    // Encoded using [RFC 3339](https://www.ietf.org/rfc/rfc3339.txt) format.\n    // For example, \"2017-01-15T01:30:15.01Z\".\n    // This can be parsed directly in modern browsers via Date constructor.\n    // This can be computed using Data.prototype.toISOString.\n    if (resp[fireauth.MultiFactorInfo.MfaEnrollmentField.ENROLLED_AT]) {\n      enrollmentTime = new Date(\n            resp[fireauth.MultiFactorInfo.MfaEnrollmentField.ENROLLED_AT])\n                .toUTCString();\n    }\n    fireauth.object.setReadonlyProperty(\n        this,\n        'enrollmentTime',\n        enrollmentTime);\n    fireauth.object.setReadonlyProperty(\n        this,\n        'factorId',\n        factorId);\n  } else {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.INTERNAL_ERROR,\n        'Internal assert: invalid MultiFactorInfo object');\n  }\n};\n\n\n/** @return {!Object} The plain object representation. */\nfireauth.MultiFactorInfo.prototype.toPlainObject = function() {\n  return {\n    'uid': this['uid'],\n    'displayName': this['displayName'],\n    'factorId': this['factorId'],\n    'enrollmentTime': this['enrollmentTime']\n  };\n};\n\n\n/**\n * Returns the factor ID based on the server response. This function needs to be\n * implemented by the subclass.\n * @param {!Object} resp The server response.\n * @return {?fireauth.constants.SecondFactorType} The factor ID based on the\n *     response type.\n * @protected\n */\nfireauth.MultiFactorInfo.prototype.getFactorId = goog.abstractMethod;\n\n\n/**\n * Returns the corresponding `firebase.auth.MultiFactor` instance if the\n * server response maps to one. Otherwise, null is returned.\n * @param {?Object} resp The server response.\n * @return {?fireauth.MultiFactorInfo} The corresponding\n *     `firebase.auth.MultiFactorInfo` instance, null otherwise.\n */\nfireauth.MultiFactorInfo.fromServerResponse = function(resp) {\n  var multiFactorInfo;\n  // Only PhoneMultiFactorInfo currently available.\n  try {\n    multiFactorInfo = new fireauth.PhoneMultiFactorInfo(resp);\n  } catch (e) {\n    multiFactorInfo = null;\n  }\n  return multiFactorInfo;\n};\n\n\n/**\n * Returns the corresponding `firebase.auth.MultiFactor` instance if the\n * plain object maps to one. Otherwise, null is returned.\n * @param {?Object} obj The plain object representation.\n * @return {?fireauth.MultiFactorInfo} The corresponding\n *     `firebase.auth.MultiFactorInfo` instance, null otherwise.\n */\nfireauth.MultiFactorInfo.fromPlainObject = function(obj) {\n  var multiFactorInfo = null;\n  var resp = {};\n  if (!obj) {\n    return null;\n  }\n  if (obj['uid']) {\n    resp[fireauth.MultiFactorInfo.MfaEnrollmentField.MFA_ENROLLMENT_ID] =\n        obj['uid'];\n  }\n  if (obj['displayName']) {\n    resp[fireauth.MultiFactorInfo.MfaEnrollmentField.DISPLAY_NAME] =\n        obj['displayName'];\n  }\n  if (obj['enrollmentTime']) {\n    resp[fireauth.MultiFactorInfo.MfaEnrollmentField.ENROLLED_AT] =\n        new Date(obj['enrollmentTime']).toISOString();\n  }\n  if (obj['phoneNumber']) {\n    resp[fireauth.MultiFactorInfo.MfaEnrollmentField.PHONE_INFO] =\n        obj['phoneNumber'];\n  }\n\n  // Only PhoneMultiFactorInfo currently available.\n  try {\n    multiFactorInfo = new fireauth.PhoneMultiFactorInfo(resp);\n  } catch (e) {\n    // Ignore error.\n  }\n  return multiFactorInfo;\n};\n\n\n/**\n * MfaEnrollment server side response fields.\n * @enum {string}\n */\nfireauth.MultiFactorInfo.MfaEnrollmentField = {\n  DISPLAY_NAME: 'displayName',\n  ENROLLED_AT: 'enrolledAt',\n  MFA_ENROLLMENT_ID: 'mfaEnrollmentId',\n  PHONE_INFO: 'phoneInfo'\n};\n\n\n/**\n * Initializes a `firebase.auth.PhoneMultiFactorInfo` instance from the provided\n * server response.\n * @param {?Object} resp The server response.\n * @constructor\n * @extends {fireauth.MultiFactorInfo}\n */\nfireauth.PhoneMultiFactorInfo = function(resp) {\n  fireauth.PhoneMultiFactorInfo.base(this, 'constructor', resp);\n  fireauth.object.setReadonlyProperty(\n      this,\n      'phoneNumber',\n      // PhoneInfo may be masked for security reasons for sign-in flows after\n      // the user signs in with the first factor but hasn't yet proven ownership\n      // of the second factor yet.\n      // For enrollment flows or for a user already signed in with a second\n      // factor, this field should not be masked.\n      resp[fireauth.MultiFactorInfo.MfaEnrollmentField.PHONE_INFO]);\n};\ngoog.inherits(\n    fireauth.PhoneMultiFactorInfo, fireauth.MultiFactorInfo);\n\n\n/**\n * Implements the factor ID getter based on the response. If the response is an\n * invalid PhoneMultiFactorInfo, null is returned.\n * @param {!Object} resp The server response.\n * @return {?fireauth.constants.SecondFactorType} The phone factor ID.\n * @protected\n * @override\n */\nfireauth.PhoneMultiFactorInfo.prototype.getFactorId = function(resp) {\n  return !!resp[fireauth.MultiFactorInfo.MfaEnrollmentField.PHONE_INFO] ?\n      fireauth.constants.SecondFactorType.PHONE : null;\n};\n\n\n/**\n * @return {!Object} The plain object representation.\n * @override\n */\nfireauth.PhoneMultiFactorInfo.prototype.toPlainObject = function() {\n  var obj = fireauth.PhoneMultiFactorInfo.base(this, 'toPlainObject');\n  obj['phoneNumber'] = this['phoneNumber'];\n  return obj;\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the firebase.auth.ActionCodeInfo class that is returned\n * when calling checkActionCode API and is populated from the server response\n * directly.\n */\n\ngoog.provide('fireauth.ActionCodeInfo');\n\ngoog.require('fireauth.MultiFactorInfo');\ngoog.require('fireauth.object');\n\n\n/**\n * Constructs the action code info object which provides metadata corresponding\n * to action codes. This includes the type of operation (RESET_PASSWORD,\n * VERIFY_EMAIL and RECOVER_EMAIL), the email corresponding to the operation\n * and in case of the recover email flow, the old and new email.\n * @param {!Object} response The server response for checkActionCode.\n * @constructor\n */\nfireauth.ActionCodeInfo = function(response) {\n  var data = {};\n  // Original email for email change revocation.\n  var email = response[fireauth.ActionCodeInfo.ServerFieldName.EMAIL];\n  // The new email.\n  var newEmail = response[fireauth.ActionCodeInfo.ServerFieldName.NEW_EMAIL];\n  var operation =\n      response[fireauth.ActionCodeInfo.ServerFieldName.REQUEST_TYPE];\n  // The multi-factor info for revert second factor addition.\n  var mfaInfo =\n      fireauth.MultiFactorInfo.fromServerResponse(\n          response[fireauth.ActionCodeInfo.ServerFieldName.MFA_INFO]);\n  // Email could be empty only if the request type is EMAIL_SIGNIN or\n  // VERIFY_AND_CHANGE_EMAIL.\n  // New email should not be empty if the request type is\n  // VERIFY_AND_CHANGE_EMAIL.\n  // Multi-factor info could not be empty if the request type is\n  // REVERT_SECOND_FACTOR_ADDITION.\n  if (!operation ||\n      (operation != fireauth.ActionCodeInfo.Operation.EMAIL_SIGNIN &&\n       operation != fireauth.ActionCodeInfo.Operation.VERIFY_AND_CHANGE_EMAIL &&\n       !email) ||\n      (operation == fireauth.ActionCodeInfo.Operation.VERIFY_AND_CHANGE_EMAIL &&\n       !newEmail) ||\n      (operation ==\n       fireauth.ActionCodeInfo.Operation.REVERT_SECOND_FACTOR_ADDITION &&\n       !mfaInfo)) {\n    // This is internal only.\n    throw new Error('Invalid checkActionCode response!');\n  }\n  if (operation == fireauth.ActionCodeInfo.Operation.VERIFY_AND_CHANGE_EMAIL) {\n    data[fireauth.ActionCodeInfo.DataField.FROM_EMAIL] = email || null;\n    data[fireauth.ActionCodeInfo.DataField.PREVIOUS_EMAIL] = email || null;\n    data[fireauth.ActionCodeInfo.DataField.EMAIL] = newEmail;\n  } else {\n    data[fireauth.ActionCodeInfo.DataField.FROM_EMAIL] = newEmail || null;\n    data[fireauth.ActionCodeInfo.DataField.PREVIOUS_EMAIL] = newEmail || null;\n    data[fireauth.ActionCodeInfo.DataField.EMAIL] = email || null;\n  }\n  data[fireauth.ActionCodeInfo.DataField.MULTI_FACTOR_INFO] = mfaInfo || null;\n  fireauth.object.setReadonlyProperty(\n      this,\n      fireauth.ActionCodeInfo.PropertyName.OPERATION,\n      operation);\n  fireauth.object.setReadonlyProperty(\n      this,\n      fireauth.ActionCodeInfo.PropertyName.DATA,\n      fireauth.object.unsafeCreateReadOnlyCopy(data));\n};\n\n\n/**\n * Firebase Auth Action Code Info operation possible values.\n * @enum {string}\n */\nfireauth.ActionCodeInfo.Operation = {\n  PASSWORD_RESET: 'PASSWORD_RESET',\n  RECOVER_EMAIL: 'RECOVER_EMAIL',\n  REVERT_SECOND_FACTOR_ADDITION: 'REVERT_SECOND_FACTOR_ADDITION',\n  EMAIL_SIGNIN: 'EMAIL_SIGNIN',\n  VERIFY_AND_CHANGE_EMAIL: 'VERIFY_AND_CHANGE_EMAIL',\n  VERIFY_EMAIL: 'VERIFY_EMAIL'\n};\n\n\n/**\n * The checkActionCode endpoint server response field names.\n * @enum {string}\n */\nfireauth.ActionCodeInfo.ServerFieldName = {\n  // This is the current email of the account and in email recovery, the email\n  // to revert to.\n  EMAIL: 'email',\n  // The multi-factor info to unenroll for revert second factor addition action.\n  MFA_INFO: 'mfaInfo',\n  // For email recovery, this is the new email.\n  NEW_EMAIL: 'newEmail',\n  // The action code request type.\n  REQUEST_TYPE: 'requestType'\n};\n\n\n/**\n * The ActionCodeInfo data object field names.\n * @enum {string}\n */\nfireauth.ActionCodeInfo.DataField = {\n  EMAIL: 'email',\n  // This field will be deprecated in favor of PREVIOUS_EMAIL.\n  FROM_EMAIL: 'fromEmail',\n  MULTI_FACTOR_INFO: 'multiFactorInfo',\n  PREVIOUS_EMAIL: 'previousEmail'\n};\n\n\n/**\n * The ActionCodeInfo main property names\n * @enum {string}\n */\nfireauth.ActionCodeInfo.PropertyName = {\n  DATA: 'data',\n  OPERATION: 'operation'\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines firebase.auth.ActionCodeURL class which is the utility\n * to parse action code URLs.\n */\n\ngoog.provide('fireauth.ActionCodeURL');\n\ngoog.require('fireauth.ActionCodeInfo');\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.object');\ngoog.require('goog.Uri');\n\n\n/**\n * The utility class to help parse action code URLs used for out of band email\n * flows such as password reset, email verification, email link sign in, etc.\n * @param {string} actionLink The action link string.\n * @constructor\n */\nfireauth.ActionCodeURL = function(actionLink) {\n  var uri = goog.Uri.parse(actionLink);\n  var apiKey = uri.getParameterValue(\n      fireauth.ActionCodeURL.QueryField.API_KEY) || null;\n  var code = uri.getParameterValue(\n      fireauth.ActionCodeURL.QueryField.CODE) || null;\n  var mode = uri.getParameterValue(\n      fireauth.ActionCodeURL.QueryField.MODE) || null;\n  var operation = fireauth.ActionCodeURL.getOperation(mode);\n  // Validate API key, code and mode.\n  if (!apiKey || !code || !operation) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.ARGUMENT_ERROR,\n        fireauth.ActionCodeURL.QueryField.API_KEY + ', ' +\n        fireauth.ActionCodeURL.QueryField.CODE + 'and ' +\n        fireauth.ActionCodeURL.QueryField.MODE +\n        ' are required in a valid action code URL.');\n  }\n  fireauth.object.setReadonlyProperties(this, {\n    'apiKey': apiKey,\n    'operation': operation,\n    'code': code,\n    'continueUrl': uri.getParameterValue(\n        fireauth.ActionCodeURL.QueryField.CONTINUE_URL) || null,\n    'languageCode': uri.getParameterValue(\n        fireauth.ActionCodeURL.QueryField.LANGUAGE_CODE) || null,\n    'tenantId': uri.getParameterValue(\n        fireauth.ActionCodeURL.QueryField.TENANT_ID) || null\n  });\n};\n\n/**\n * Enums for fields in URL query string.\n * @enum {string}\n */\nfireauth.ActionCodeURL.QueryField = {\n  API_KEY: 'apiKey',\n  CODE: 'oobCode',\n  CONTINUE_URL: 'continueUrl',\n  LANGUAGE_CODE: 'languageCode',\n  MODE: 'mode',\n  TENANT_ID: 'tenantId'\n};\n\n\n/**\n * Map of mode string to Action Code Info operation.\n * @const @private {!Object<string, !fireauth.ActionCodeInfo.Operation>}\n */\nfireauth.ActionCodeURL.ModeToOperationMap_ = {\n  'recoverEmail': fireauth.ActionCodeInfo.Operation.RECOVER_EMAIL,\n  'resetPassword': fireauth.ActionCodeInfo.Operation.PASSWORD_RESET,\n  'revertSecondFactorAddition':\n      fireauth.ActionCodeInfo.Operation.REVERT_SECOND_FACTOR_ADDITION,\n  'signIn': fireauth.ActionCodeInfo.Operation.EMAIL_SIGNIN,\n  'verifyAndChangeEmail':\n      fireauth.ActionCodeInfo.Operation.VERIFY_AND_CHANGE_EMAIL,\n  'verifyEmail': fireauth.ActionCodeInfo.Operation.VERIFY_EMAIL\n};\n\n\n/**\n * Maps the mode string in action code URL to Action Code Info operation.\n * @param {?string} mode The mode string in the URL.\n * @return {?fireauth.ActionCodeInfo.Operation}\n */\nfireauth.ActionCodeURL.getOperation = function(mode) {\n  if (!mode) {\n    return null;\n  }\n  return fireauth.ActionCodeURL.ModeToOperationMap_[mode] || null;\n\n};\n\n\n/**\n * Returns an ActionCodeURL instance if the link is valid, otherwise null.\n * @param {string} actionLink The action code link string.\n * @return {?fireauth.ActionCodeURL}\n */\nfireauth.ActionCodeURL.parseLink = function(actionLink) {\n  try {\n    return new fireauth.ActionCodeURL(actionLink);\n  } catch(e) {\n    return null;\n  }\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Utility for firebase.auth.ActionCodeSettings and its helper\n * functions.\n */\n\ngoog.provide('fireauth.ActionCodeSettings');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.authenum.Error');\n\n\n/**\n * Defines the action code settings structure used to specify how email action\n * links are handled.\n * @param {!Object} settingsObj The action code settings object used to\n *     construct the action code link.\n * @constructor @struct @final\n */\nfireauth.ActionCodeSettings = function(settingsObj) {\n  // Validate the settings object passed.\n  this.initialize_(settingsObj);\n};\n\n\n/**\n * Validate the action code settings object.\n * @param {!Object} settingsObj The action code settings object to validate.\n * @private\n */\nfireauth.ActionCodeSettings.prototype.initialize_ = function(settingsObj) {\n  // URL should be required.\n  var continueUrl = settingsObj[fireauth.ActionCodeSettings.RawField.URL];\n  if (typeof continueUrl === 'undefined') {\n    throw new fireauth.AuthError(fireauth.authenum.Error.MISSING_CONTINUE_URI);\n  } else if (typeof continueUrl !== 'string' ||\n             (typeof continueUrl === 'string' && !continueUrl.length)) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INVALID_CONTINUE_URI);\n  }\n  /** @const @private {string} The continue URL. */\n  this.continueUrl_ = /** @type {string} */ (continueUrl);\n\n  // Validate Android parameters.\n  /** @private {?string} The Android package name. */\n  this.apn_ = null;\n  /** @private {?string} The Android minimum version. */\n  this.amv_ = null;\n  /** @private {boolean} Whether to install the Android app. */\n  this.installApp_ = false;\n  var androidSettings =\n      settingsObj[fireauth.ActionCodeSettings.RawField.ANDROID];\n  if (androidSettings && typeof androidSettings === 'object') {\n    var apn = androidSettings[\n      fireauth.ActionCodeSettings.AndroidRawField.PACKAGE_NAME];\n    var installApp = androidSettings[\n      fireauth.ActionCodeSettings.AndroidRawField.INSTALL_APP];\n    var amv = androidSettings[\n      fireauth.ActionCodeSettings.AndroidRawField.MINIMUM_VERSION];\n    if (typeof apn === 'string' && apn.length) {\n      this.apn_ = /** @type {string} */ (apn);\n      if (typeof installApp !== 'undefined' &&\n          typeof installApp !== 'boolean') {\n        throw new fireauth.AuthError(\n            fireauth.authenum.Error.ARGUMENT_ERROR,\n            fireauth.ActionCodeSettings.AndroidRawField.INSTALL_APP +\n            ' property must be a boolean when specified.');\n      }\n      this.installApp_ = !!installApp;\n      if (typeof amv !== 'undefined' &&\n          (typeof amv !== 'string' ||\n           (typeof amv === 'string' && !amv.length))) {\n        throw new fireauth.AuthError(\n            fireauth.authenum.Error.ARGUMENT_ERROR,\n            fireauth.ActionCodeSettings.AndroidRawField.MINIMUM_VERSION +\n            ' property must be a non empty string when specified.');\n      }\n      this.amv_ = /** @type {?string}*/ (amv || null);\n    } else if (typeof apn !== 'undefined') {\n      throw new fireauth.AuthError(\n          fireauth.authenum.Error.ARGUMENT_ERROR,\n          fireauth.ActionCodeSettings.AndroidRawField.PACKAGE_NAME +\n          ' property must be a non empty string when specified.');\n    } else if (typeof installApp !== 'undefined' ||\n               typeof amv !== 'undefined') {\n      // If installApp or amv specified with no valid APN, fail quickly.\n      throw new fireauth.AuthError(\n          fireauth.authenum.Error.MISSING_ANDROID_PACKAGE_NAME);\n    }\n  } else if (typeof androidSettings !== 'undefined') {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.ARGUMENT_ERROR,\n        fireauth.ActionCodeSettings.RawField.ANDROID +\n        ' property must be a non null object when specified.');\n  }\n\n  // Validate iOS parameters.\n  /** @private {?string} The iOS bundle ID. */\n  this.ibi_ = null;\n  var iosSettings = settingsObj[fireauth.ActionCodeSettings.RawField.IOS];\n  if (iosSettings && typeof iosSettings === 'object') {\n    var ibi = iosSettings[\n      fireauth.ActionCodeSettings.IosRawField.BUNDLE_ID];\n    if (typeof ibi === 'string' && ibi.length) {\n      this.ibi_ = /** @type {string}*/ (ibi);\n    } else if (typeof ibi !== 'undefined') {\n      throw new fireauth.AuthError(\n          fireauth.authenum.Error.ARGUMENT_ERROR,\n          fireauth.ActionCodeSettings.IosRawField.BUNDLE_ID +\n          ' property must be a non empty string when specified.');\n    }\n  } else if (typeof iosSettings !== 'undefined') {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.ARGUMENT_ERROR,\n        fireauth.ActionCodeSettings.RawField.IOS +\n        ' property must be a non null object when specified.');\n  }\n\n  // Validate canHandleCodeInApp.\n  var canHandleCodeInApp =\n      settingsObj[fireauth.ActionCodeSettings.RawField.HANDLE_CODE_IN_APP];\n  if (typeof canHandleCodeInApp !== 'undefined' &&\n      typeof canHandleCodeInApp !== 'boolean') {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.ARGUMENT_ERROR,\n        fireauth.ActionCodeSettings.RawField.HANDLE_CODE_IN_APP +\n        ' property must be a boolean when specified.');\n  }\n  /** @const @private {boolean} Whether the code can be handled in app. */\n  this.canHandleCodeInApp_ = !!canHandleCodeInApp;\n\n  // Validate dynamicLinkDomain.\n  var dynamicLinkDomain = settingsObj[\n      fireauth.ActionCodeSettings.RawField.DYNAMIC_LINK_DOMAIN];\n  if (typeof dynamicLinkDomain !== 'undefined' &&\n      (typeof dynamicLinkDomain !== 'string' ||\n       (typeof dynamicLinkDomain === 'string' &&\n        !dynamicLinkDomain.length))) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.ARGUMENT_ERROR,\n        fireauth.ActionCodeSettings.RawField.DYNAMIC_LINK_DOMAIN +\n        ' property must be a non empty string when specified.');\n  }\n  /** @const @private {?string} The FDL domain. */\n  this.dynamicLinkDomain_ = dynamicLinkDomain || null;\n};\n\n\n/**\n * Action code settings backend request field names.\n * @enum {string}\n */\nfireauth.ActionCodeSettings.RequestField = {\n  ANDROID_INSTALL_APP: 'androidInstallApp',\n  ANDROID_MINIMUM_VERSION: 'androidMinimumVersion',\n  ANDROID_PACKAGE_NAME: 'androidPackageName',\n  CAN_HANDLE_CODE_IN_APP: 'canHandleCodeInApp',\n  CONTINUE_URL: 'continueUrl',\n  DYNAMIC_LINK_DOMAIN: 'dynamicLinkDomain',\n  IOS_BUNDLE_ID: 'iOSBundleId'\n};\n\n\n/**\n * Action code settings raw field names.\n * @enum {string}\n */\nfireauth.ActionCodeSettings.RawField = {\n  ANDROID: 'android',\n  DYNAMIC_LINK_DOMAIN: 'dynamicLinkDomain',\n  HANDLE_CODE_IN_APP: 'handleCodeInApp',\n  IOS: 'iOS',\n  URL: 'url'\n};\n\n\n/**\n * Action code settings raw Android raw field names.\n * @enum {string}\n */\nfireauth.ActionCodeSettings.AndroidRawField = {\n  INSTALL_APP: 'installApp',\n  MINIMUM_VERSION: 'minimumVersion',\n  PACKAGE_NAME: 'packageName'\n};\n\n\n/**\n * Action code settings raw iOS raw field names.\n * @enum {string}\n */\nfireauth.ActionCodeSettings.IosRawField = {\n  BUNDLE_ID: 'bundleId'\n};\n\n\n/**\n * Builds and returns the backend request for the passed action code settings.\n * @return {!Object} The constructed backend request populated with the action\n *     code settings parameters.\n */\nfireauth.ActionCodeSettings.prototype.buildRequest = function() {\n  // Construct backend request.\n  var request = {};\n  request[fireauth.ActionCodeSettings.RequestField.CONTINUE_URL] =\n      this.continueUrl_;\n  request[fireauth.ActionCodeSettings.RequestField.CAN_HANDLE_CODE_IN_APP] =\n      this.canHandleCodeInApp_;\n  request[fireauth.ActionCodeSettings.RequestField.ANDROID_PACKAGE_NAME] =\n      this.apn_;\n  if (this.apn_) {\n    request[fireauth.ActionCodeSettings.RequestField.ANDROID_MINIMUM_VERSION] =\n        this.amv_;\n    request[fireauth.ActionCodeSettings.RequestField.ANDROID_INSTALL_APP] =\n        this.installApp_;\n  }\n  request[fireauth.ActionCodeSettings.RequestField.IOS_BUNDLE_ID] = this.ibi_;\n  request[fireauth.ActionCodeSettings.RequestField.DYNAMIC_LINK_DOMAIN] =\n      this.dynamicLinkDomain_;\n  // Remove null fields.\n  for (var key in request) {\n    if (request[key] === null) {\n      delete request[key];\n    }\n  }\n  return request;\n};\n\n\n/**\n * Returns the canHandleCodeInApp setting of ActionCodeSettings.\n * @return {boolean} Whether the code can be handled in app.\n */\nfireauth.ActionCodeSettings.prototype.canHandleCodeInApp = function() {\n  return this.canHandleCodeInApp_;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Base64 en/decoding. Not much to say here except that we\n * work with decoded values in arrays of bytes. By \"byte\" I mean a number\n * in [0, 255].\n */\n\ngoog.provide('goog.crypt.base64');\n\ngoog.require('goog.asserts');\ngoog.require('goog.crypt');\ngoog.require('goog.string');\ngoog.require('goog.userAgent');\ngoog.require('goog.userAgent.product');\n\n/**\n * Default alphabet, shared between alphabets. Only 62 characters.\n * @private {string}\n */\ngoog.crypt.base64.DEFAULT_ALPHABET_COMMON_ = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' +\n    'abcdefghijklmnopqrstuvwxyz' +\n    '0123456789';\n\n\n/**\n * Alphabet characters for Alphabet.DEFAULT encoding.\n * For characters without padding, please consider using\n * `goog.crypt.baseN.BASE_64` instead.\n *\n * @type {string}\n */\ngoog.crypt.base64.ENCODED_VALS =\n    goog.crypt.base64.DEFAULT_ALPHABET_COMMON_ + '+/=';\n\n\n/**\n * Alphabet characters for Alphabet.WEBSAFE_DOT_PADDING encoding.\n * The dot padding is no Internet Standard, according to RFC 4686.\n * https://tools.ietf.org/html/rfc4648\n * For characters without padding, please consider using\n * `goog.crypt.baseN.BASE_64_URL_SAFE` instead.\n *\n * @type {string}\n */\ngoog.crypt.base64.ENCODED_VALS_WEBSAFE =\n    goog.crypt.base64.DEFAULT_ALPHABET_COMMON_ + '-_.';\n\n\n/**\n * Alphabets for Base64 encoding\n * Alphabets with no padding character are for encoding without padding.\n * About the alphabets, please refer to RFC 4686.\n * https://tools.ietf.org/html/rfc4648\n * @enum {number}\n */\ngoog.crypt.base64.Alphabet = {\n  DEFAULT: 0,\n  NO_PADDING: 1,\n  WEBSAFE: 2,\n  WEBSAFE_DOT_PADDING: 3,\n  WEBSAFE_NO_PADDING: 4,\n};\n\n\n/**\n * Padding chars for Base64 encoding\n * @const {string}\n * @private\n */\ngoog.crypt.base64.paddingChars_ = '=.';\n\n\n/**\n * Check if a character is a padding character\n *\n * @param {string} char\n * @return {boolean}\n * @private\n */\ngoog.crypt.base64.isPadding_ = function(char) {\n  return goog.string.contains(goog.crypt.base64.paddingChars_, char);\n};\n\n\n// Static lookup maps, lazily populated by init_()\n\n/**\n * For each `Alphabet`, maps from bytes to characters.\n *\n * @see https://jsperf.com/char-lookups\n * @type {!Object<!goog.crypt.base64.Alphabet, !Array<string>>}\n * @private\n */\ngoog.crypt.base64.byteToCharMaps_ = {};\n\n/**\n * Maps characters to bytes.\n *\n * This map is used for all alphabets since, across alphabets, common chars\n * always map to the same byte.\n *\n * `null` indicates `init` has not yet been called.\n *\n * @type {?Object<string, number>}\n * @private\n */\ngoog.crypt.base64.charToByteMap_ = null;\n\n\n/**\n * White list of implementations with known-good native atob and btoa functions.\n * Listing these explicitly (via the ASSUME_* wrappers) benefits dead-code\n * removal in per-browser compilations.\n * @private {boolean}\n */\ngoog.crypt.base64.ASSUME_NATIVE_SUPPORT_ = goog.userAgent.GECKO ||\n    (goog.userAgent.WEBKIT && !goog.userAgent.product.SAFARI) ||\n    goog.userAgent.OPERA;\n\n\n/**\n * Does this browser have a working btoa function?\n * @private {boolean}\n */\ngoog.crypt.base64.HAS_NATIVE_ENCODE_ =\n    goog.crypt.base64.ASSUME_NATIVE_SUPPORT_ ||\n    typeof(goog.global.btoa) == 'function';\n\n\n/**\n * Does this browser have a working atob function?\n * We blacklist known-bad implementations:\n *  - IE (10+) added atob() but it does not tolerate whitespace on the input.\n * @private {boolean}\n */\ngoog.crypt.base64.HAS_NATIVE_DECODE_ =\n    goog.crypt.base64.ASSUME_NATIVE_SUPPORT_ ||\n    (!goog.userAgent.product.SAFARI && !goog.userAgent.IE &&\n     typeof(goog.global.atob) == 'function');\n\n\n/**\n * Base64-encode an array of bytes.\n *\n * @param {Array<number>|Uint8Array} input An array of bytes (numbers with\n *     value in [0, 255]) to encode.\n * @param {!goog.crypt.base64.Alphabet=} alphabet Base 64 alphabet to\n *     use in encoding. Alphabet.DEFAULT is used by default.\n * @return {string} The base64 encoded string.\n */\ngoog.crypt.base64.encodeByteArray = function(input, alphabet) {\n  // Assert avoids runtime dependency on goog.isArrayLike, which helps reduce\n  // size of jscompiler output, and which yields slight performance increase.\n  goog.asserts.assert(\n      goog.isArrayLike(input), 'encodeByteArray takes an array as a parameter');\n\n  if (alphabet === undefined) {\n    alphabet = goog.crypt.base64.Alphabet.DEFAULT;\n  }\n\n  goog.crypt.base64.init_();\n\n  var byteToCharMap = goog.crypt.base64.byteToCharMaps_[alphabet];\n\n  var output = [];\n\n  for (var i = 0; i < input.length; i += 3) {\n    var byte1 = input[i];\n    var haveByte2 = i + 1 < input.length;\n    var byte2 = haveByte2 ? input[i + 1] : 0;\n    var haveByte3 = i + 2 < input.length;\n    var byte3 = haveByte3 ? input[i + 2] : 0;\n\n    var outByte1 = byte1 >> 2;\n    var outByte2 = ((byte1 & 0x03) << 4) | (byte2 >> 4);\n    var outByte3 = ((byte2 & 0x0F) << 2) | (byte3 >> 6);\n    var outByte4 = byte3 & 0x3F;\n\n    if (!haveByte3) {\n      outByte4 = 64;\n\n      if (!haveByte2) {\n        outByte3 = 64;\n      }\n    }\n\n    output.push(\n        byteToCharMap[outByte1], byteToCharMap[outByte2],\n        byteToCharMap[outByte3] || '', byteToCharMap[outByte4] || '');\n  }\n\n  return output.join('');\n};\n\n\n/**\n * Base64-encode a string.\n *\n * @param {string} input A string to encode.\n * @param {!goog.crypt.base64.Alphabet=} alphabet Base 64 alphabet to\n *     use in encoding. Alphabet.DEFAULT is used by default.\n * @return {string} The base64 encoded string.\n */\ngoog.crypt.base64.encodeString = function(input, alphabet) {\n  // Shortcut for browsers that implement\n  // a native base64 encoder in the form of \"btoa/atob\"\n  if (goog.crypt.base64.HAS_NATIVE_ENCODE_ && !alphabet) {\n    return goog.global.btoa(input);\n  }\n  return goog.crypt.base64.encodeByteArray(\n      goog.crypt.stringToByteArray(input), alphabet);\n};\n\n\n/**\n * Base64-decode a string.\n *\n * @param {string} input Input to decode. Any whitespace is ignored, and the\n *     input maybe encoded with either supported alphabet (or a mix thereof).\n * @param {boolean=} useCustomDecoder True indicates the custom decoder is used,\n *     which supports alternative alphabets. Note that passing false may still\n *     use the custom decoder on browsers without native support.\n * @return {string} string representing the decoded value.\n */\ngoog.crypt.base64.decodeString = function(input, useCustomDecoder) {\n  // Shortcut for browsers that implement\n  // a native base64 encoder in the form of \"btoa/atob\"\n  if (goog.crypt.base64.HAS_NATIVE_DECODE_ && !useCustomDecoder) {\n    return goog.global.atob(input);\n  }\n  var output = '';\n  function pushByte(b) {\n    output += String.fromCharCode(b);\n  }\n\n  goog.crypt.base64.decodeStringInternal_(input, pushByte);\n\n  return output;\n};\n\n\n/**\n * Base64-decode a string to an Array of numbers.\n *\n * In base-64 decoding, groups of four characters are converted into three\n * bytes.  If the encoder did not apply padding, the input length may not\n * be a multiple of 4.\n *\n * In this case, the last group will have fewer than 4 characters, and\n * padding will be inferred.  If the group has one or two characters, it decodes\n * to one byte.  If the group has three characters, it decodes to two bytes.\n *\n * @param {string} input Input to decode. Any whitespace is ignored, and the\n *     input maybe encoded with either supported alphabet (or a mix thereof).\n * @param {boolean=} opt_ignored Unused parameter, retained for compatibility.\n * @return {!Array<number>} bytes representing the decoded value.\n */\ngoog.crypt.base64.decodeStringToByteArray = function(input, opt_ignored) {\n  var output = [];\n  function pushByte(b) { output.push(b); }\n\n  goog.crypt.base64.decodeStringInternal_(input, pushByte);\n\n  return output;\n};\n\n\n/**\n * Base64-decode a string to a Uint8Array.\n *\n * Note that Uint8Array is not supported on older browsers, e.g. IE < 10.\n * @see http://caniuse.com/uint8array\n *\n * In base-64 decoding, groups of four characters are converted into three\n * bytes.  If the encoder did not apply padding, the input length may not\n * be a multiple of 4.\n *\n * In this case, the last group will have fewer than 4 characters, and\n * padding will be inferred.  If the group has one or two characters, it decodes\n * to one byte.  If the group has three characters, it decodes to two bytes.\n *\n * @param {string} input Input to decode. Any whitespace is ignored, and the\n *     input maybe encoded with either supported alphabet (or a mix thereof).\n * @return {!Uint8Array} bytes representing the decoded value.\n */\ngoog.crypt.base64.decodeStringToUint8Array = function(input) {\n  goog.asserts.assert(\n      !goog.userAgent.IE || goog.userAgent.isVersionOrHigher('10'),\n      'Browser does not support typed arrays');\n  var len = input.length;\n  // Approximate the length of the array needed for output.\n  // Our method varies according to the format of the input, which we can\n  // consider in three categories:\n  //   A) well-formed with proper padding\n  //   B) well-formed without any padding\n  //   C) not-well-formed, either with extra whitespace in the middle or with\n  //      extra padding characters.\n  //\n  //  In the case of (A), (length * 3 / 4) will result in an integer number of\n  //  bytes evenly divisible by 3, and we need only subtract bytes according to\n  //  the padding observed.\n  //\n  //  In the case of (B), (length * 3 / 4) will result in a non-integer number\n  //  of bytes, or not evenly divisible by 3. (If the result is evenly divisible\n  //  by 3, it's well-formed with the proper amount of padding [0 padding]).\n  //  This approximation can become exact by rounding down.\n  //\n  //  In the case of (C), the only way to get the length is to walk the full\n  //  length of the string to consider each character. This is handled by\n  //  tracking the number of bytes added to the array and using subarray to\n  //  trim the array back down to size.\n  var approxByteLength = len * 3 / 4;\n  if (approxByteLength % 3) {\n    // The string isn't complete, either because it didn't include padding, or\n    // because it has extra white space.\n    // In either case, we won't generate more bytes than are completely encoded,\n    // so rounding down is appropriate to have a buffer at least as large as\n    // output.\n    approxByteLength = Math.floor(approxByteLength);\n  } else if (goog.crypt.base64.isPadding_(input[len - 1])) {\n    // The string has a round length, and has some padding.\n    // Reduce the byte length according to the quantity of padding.\n    if (goog.crypt.base64.isPadding_(input[len - 2])) {\n      approxByteLength -= 2;\n    } else {\n      approxByteLength -= 1;\n    }\n  }\n  var output = new Uint8Array(approxByteLength);\n  var outLen = 0;\n  function pushByte(b) {\n    output[outLen++] = b;\n  }\n\n  goog.crypt.base64.decodeStringInternal_(input, pushByte);\n\n  // Return a subarray to handle the case that input included extra whitespace\n  // or extra padding and approxByteLength was incorrect.\n  return output.subarray(0, outLen);\n};\n\n\n/**\n * @param {string} input Input to decode.\n * @param {function(number):void} pushByte result accumulator.\n * @private\n */\ngoog.crypt.base64.decodeStringInternal_ = function(input, pushByte) {\n  goog.crypt.base64.init_();\n\n  var nextCharIndex = 0;\n  /**\n   * @param {number} default_val Used for end-of-input.\n   * @return {number} The next 6-bit value, or the default for end-of-input.\n   */\n  function getByte(default_val) {\n    while (nextCharIndex < input.length) {\n      var ch = input.charAt(nextCharIndex++);\n      var b = goog.crypt.base64.charToByteMap_[ch];\n      if (b != null) {\n        return b;  // Common case: decoded the char.\n      }\n      if (!goog.string.isEmptyOrWhitespace(ch)) {\n        throw new Error('Unknown base64 encoding at char: ' + ch);\n      }\n      // We encountered whitespace: loop around to the next input char.\n    }\n    return default_val;  // No more input remaining.\n  }\n\n  while (true) {\n    var byte1 = getByte(-1);\n    var byte2 = getByte(0);\n    var byte3 = getByte(64);\n    var byte4 = getByte(64);\n\n    // The common case is that all four bytes are present, so if we have byte4\n    // we can skip over the truncated input special case handling.\n    if (byte4 === 64) {\n      if (byte1 === -1) {\n        return;  // Terminal case: no input left to decode.\n      }\n      // Here we know an intermediate number of bytes are missing.\n      // The defaults for byte2, byte3 and byte4 apply the inferred padding\n      // rules per the public API documentation. i.e: 1 byte\n      // missing should yield 2 bytes of output, but 2 or 3 missing bytes yield\n      // a single byte of output. (Recall that 64 corresponds the padding char).\n    }\n\n    var outByte1 = (byte1 << 2) | (byte2 >> 4);\n    pushByte(outByte1);\n\n    if (byte3 != 64) {\n      var outByte2 = ((byte2 << 4) & 0xF0) | (byte3 >> 2);\n      pushByte(outByte2);\n\n      if (byte4 != 64) {\n        var outByte3 = ((byte3 << 6) & 0xC0) | byte4;\n        pushByte(outByte3);\n      }\n    }\n  }\n};\n\n\n/**\n * Lazy static initialization function. Called before\n * accessing any of the static map variables.\n * @private\n */\ngoog.crypt.base64.init_ = function() {\n  if (goog.crypt.base64.charToByteMap_) {\n    return;\n  }\n  goog.crypt.base64.charToByteMap_ = {};\n\n  // We want quick mappings back and forth, so we precompute encoding maps.\n\n  /** @type {!Array<string>} */\n  var commonChars = goog.crypt.base64.DEFAULT_ALPHABET_COMMON_.split('');\n  var specialChars = [\n    '+/=',  // DEFAULT\n    '+/',   // NO_PADDING\n    '-_=',  // WEBSAFE\n    '-_.',  // WEBSAFE_DOT_PADDING\n    '-_',   // WEBSAFE_NO_PADDING\n  ];\n\n  for (var i = 0; i < 5; i++) {\n    // `i` is each value of the `goog.crypt.base64.Alphabet` enum\n    var chars = commonChars.concat(specialChars[i].split(''));\n\n    // Sets byte-to-char map\n    goog.crypt.base64\n        .byteToCharMaps_[/** @type {!goog.crypt.base64.Alphabet} */ (i)] =\n        chars;\n\n    // Sets char-to-byte map\n    for (var j = 0; j < chars.length; j++) {\n      var char = chars[j];\n\n      var existingByte = goog.crypt.base64.charToByteMap_[char];\n      if (existingByte === undefined) {\n        goog.crypt.base64.charToByteMap_[char] = j;\n      } else {\n        goog.asserts.assert(existingByte === j);\n      }\n    }\n  }\n};\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Utility functions to handle Firebase Auth ID tokens.\n */\n\ngoog.provide('fireauth.IdToken');\n\ngoog.require('goog.crypt');\ngoog.require('goog.crypt.base64');\n\n\n/**\n * Parses the token string into a {@code Token} object.\n * @param {?string} tokenString The JWT token string.\n * @constructor\n */\nfireauth.IdToken = function(tokenString) {\n  const token = fireauth.IdToken.parseIdTokenClaims(tokenString);\n  if (!(token && token['sub'] && token['iss'] &&\n        token['aud'] && token['exp'])) {\n    throw new Error('Invalid JWT');\n  }\n  /** @const @private {string} The plain JWT string. */\n  this.jwt_ = /** @type {string} */ (tokenString);\n  /** @const @private {string} The issuer of the token. */\n  this.iss_ = token['iss'];\n  /** @const @private {string} The audience of the token. */\n  this.aud_ = token['aud'];\n  /** @const @private {number} The expire time in seconds of the token. */\n  this.exp_ = token['exp'];\n  /** @const @private {string} The local user ID of the token. */\n  this.localId_ = token['sub'];\n  const now = Date.now() / 1000;\n  /** @const @private {number} The issue time in seconds of the token. */\n  this.iat_ = token['iat'] || (now > this.exp_ ? this.exp_ : now);\n  /** @const @private {?string} The email address of the token. */\n  this.email_ = token['email'] || null;\n  /** @const @private {boolean} Whether the user is verified. */\n  this.verified_ = !!token['verified'];\n  /** @const @private {?string} The provider ID of the token. */\n  this.providerId_ = token['provider_id'] ||\n      (token['firebase'] && token['firebase']['sign_in_provider']) ||\n      null;\n  /** @const @private {?string} The tenant ID of the token. */\n  this.tenantId_ = (token['firebase'] && token['firebase']['tenant']) || null;\n  /** @const @private {boolean} Whether the user is anonymous. */\n  this.anonymous_ = !!token['is_anonymous'] || this.providerId_ == 'anonymous';\n  /** @const @private {?string} The federated ID of the token. */\n  this.federatedId_ = token['federated_id'] || null;\n  /** @const @private {?string} The display name of the token. */\n  this.displayName_ = token['display_name'] || null;\n  /** @const @private {?string} The photo URL of the token. */\n  this.photoURL_ = token['photo_url'] || null;\n  /**\n   * @const @private {?string} The phone number of the user identified by the\n   *     token.\n   */\n  this.phoneNumber_ = token['phone_number'] || null;\n};\n\n\n/**\n * @typedef {{\n *   identities: (?Object|undefined),\n *   sign_in_provider: (?string|undefined),\n *   tenant: (string|undefined)\n * }}\n */\nfireauth.IdToken.Firebase;\n\n\n/**\n * @typedef {{\n *   iss: string,\n *   aud: string,\n *   exp: number,\n *   sub: string,\n *   iat: (?number|undefined),\n *   email: (?string|undefined),\n *   verified: (?boolean|undefined),\n *   provider_id: (?string|undefined),\n *   is_anonymous: (?boolean|undefined),\n *   federated_id: (?string|undefined),\n *   display_name: (?string|undefined),\n *   photo_url: (?string|undefined),\n *   phone_number: (?string|undefined),\n *   firebase: (?fireauth.IdToken.Firebase|undefined)\n * }}\n */\nfireauth.IdToken.JsonToken;\n\n\n/** @return {?string} The email address of the account. */\nfireauth.IdToken.prototype.getEmail = function() {\n  return this.email_;\n};\n\n\n/**\n * @deprecated Use client side clock to calculate when the token expires.\n * @return {number} The expire time in seconds.\n */\nfireauth.IdToken.prototype.getExp = function() {\n  return this.exp_;\n};\n\n\n/**\n * @return {number} The difference in seconds between when the token was\n *     issued and when it expires.\n */\nfireauth.IdToken.prototype.getExpiresIn = function() {\n  return this.exp_ - this.iat_;\n};\n\n\n/** @return {?string} The ID of the identity provider. */\nfireauth.IdToken.prototype.getProviderId = function() {\n  return this.providerId_;\n};\n\n\n/** @return {?string} The tenant ID. */\nfireauth.IdToken.prototype.getTenantId = function() {\n  return this.tenantId_;\n};\n\n\n/** @return {?string} The display name of the account. */\nfireauth.IdToken.prototype.getDisplayName = function() {\n  return this.displayName_;\n};\n\n\n/** @return {?string} The photo URL of the account. */\nfireauth.IdToken.prototype.getPhotoUrl = function() {\n  return this.photoURL_;\n};\n\n\n/** @return {string} The user ID of the account. */\nfireauth.IdToken.prototype.getLocalId = function() {\n  return this.localId_;\n};\n\n\n/** @return {?string} The federated ID of the account. */\nfireauth.IdToken.prototype.getFederatedId = function() {\n  return this.federatedId_;\n};\n\n\n/** @return {boolean} Whether the user is anonymous. */\nfireauth.IdToken.prototype.isAnonymous = function() {\n  return this.anonymous_;\n};\n\n\n/** @return {boolean} Whether the user email is verified. */\nfireauth.IdToken.prototype.isVerified = function() {\n  return this.verified_;\n};\n\n\n/**\n * @deprecated Use client side clock to calculate when the token expires.\n * @return {boolean} Whether token is expired.\n */\nfireauth.IdToken.prototype.isExpired = function() {\n  const now = Math.floor(Date.now() / 1000);\n  // It is expired if token expiration time is less than current time.\n  return this.getExp() <= now;\n};\n\n\n/** @return {string} The issuer of the token. */\nfireauth.IdToken.prototype.getIssuer = function() {\n  return this.iss_;\n};\n\n\n/** @return {?string} The phone number of the account. */\nfireauth.IdToken.prototype.getPhoneNumber = function() {\n  return this.phoneNumber_;\n};\n\n\n/**\n * @return {string} The JWT string.\n * @override\n */\nfireauth.IdToken.prototype.toString = function() {\n  return this.jwt_;\n};\n\n\n/**\n * Parses the JWT token and extracts the information part without verifying the\n * token signature.\n * @param {string} tokenString The JWT token.\n * @return {?fireauth.IdToken} The decoded token.\n */\nfireauth.IdToken.parse = function(tokenString) {\n  try {\n    return new fireauth.IdToken(tokenString);\n  } catch (e) {\n    return null;\n  }\n};\n\n/**\n * Converts the information part of JWT token to plain object format.\n * @param {?string} tokenString The JWT token.\n * @return {?Object}\n */\nfireauth.IdToken.parseIdTokenClaims = function(tokenString) {\n  if (!tokenString) {\n    return null;\n  }\n  // Token format is <algorithm>.<info>.<sig>\n  const fields = tokenString.split('.');\n  if (fields.length != 3) {\n    return null;\n  }\n  let jsonInfo = fields[1];\n  // Google base64 library does not handle padding.\n  const padLen = (4 - jsonInfo.length % 4) % 4;\n  for (let i = 0; i < padLen; i++) {\n    jsonInfo += '.';\n  }\n  try {\n    const decodedClaims = goog.crypt.utf8ByteArrayToString(\n        goog.crypt.base64.decodeStringToByteArray(jsonInfo));\n    const token = JSON.parse(decodedClaims);\n    return /** @type {?Object} */ (token);\n  } catch (e) {}\n  return null;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Namespace with crypto related helper functions.\n */\n\ngoog.provide('goog.crypt');\n\ngoog.require('goog.array');\ngoog.require('goog.asserts');\n\n\n/**\n * Turns a string into an array of bytes; a \"byte\" being a JS number in the\n * range 0-255. Multi-byte characters are written as little-endian.\n * @param {string} str String value to arrify.\n * @return {!Array<number>} Array of numbers corresponding to the\n *     UCS character codes of each character in str.\n */\ngoog.crypt.stringToByteArray = function(str) {\n  var output = [], p = 0;\n  for (var i = 0; i < str.length; i++) {\n    var c = str.charCodeAt(i);\n    // NOTE: c <= 0xffff since JavaScript strings are UTF-16.\n    if (c > 0xff) {\n      output[p++] = c & 0xff;\n      c >>= 8;\n    }\n    output[p++] = c;\n  }\n  return output;\n};\n\n\n/**\n * Turns an array of numbers into the string given by the concatenation of the\n * characters to which the numbers correspond.\n * @param {!Uint8Array|!Array<number>} bytes Array of numbers representing\n *     characters.\n * @return {string} Stringification of the array.\n */\ngoog.crypt.byteArrayToString = function(bytes) {\n  var CHUNK_SIZE = 8192;\n\n  // Special-case the simple case for speed's sake.\n  if (bytes.length <= CHUNK_SIZE) {\n    return String.fromCharCode.apply(null, bytes);\n  }\n\n  // The remaining logic splits conversion by chunks since\n  // Function#apply() has a maximum parameter count.\n  // See discussion: http://goo.gl/LrWmZ9\n\n  var str = '';\n  for (var i = 0; i < bytes.length; i += CHUNK_SIZE) {\n    var chunk = goog.array.slice(bytes, i, i + CHUNK_SIZE);\n    str += String.fromCharCode.apply(null, chunk);\n  }\n  return str;\n};\n\n\n/**\n * Turns an array of numbers into the hex string given by the concatenation of\n * the hex values to which the numbers correspond.\n * @param {Uint8Array|Array<number>} array Array of numbers representing\n *     characters.\n * @param {string=} opt_separator Optional separator between values\n * @return {string} Hex string.\n */\ngoog.crypt.byteArrayToHex = function(array, opt_separator) {\n  return goog.array\n      .map(\n          array,\n          function(numByte) {\n            var hexByte = numByte.toString(16);\n            return hexByte.length > 1 ? hexByte : '0' + hexByte;\n          })\n      .join(opt_separator || '');\n};\n\n\n/**\n * Converts a hex string into an integer array.\n * @param {string} hexString Hex string of 16-bit integers (two characters\n *     per integer).\n * @return {!Array<number>} Array of {0,255} integers for the given string.\n */\ngoog.crypt.hexToByteArray = function(hexString) {\n  goog.asserts.assert(\n      hexString.length % 2 == 0, 'Key string length must be multiple of 2');\n  var arr = [];\n  for (var i = 0; i < hexString.length; i += 2) {\n    arr.push(parseInt(hexString.substring(i, i + 2), 16));\n  }\n  return arr;\n};\n\n\n/**\n * Converts a JS string to a UTF-8 \"byte\" array.\n * @param {string} str 16-bit unicode string.\n * @return {!Array<number>} UTF-8 byte array.\n */\ngoog.crypt.stringToUtf8ByteArray = function(str) {\n  // TODO(user): Use native implementations if/when available\n  var out = [], p = 0;\n  for (var i = 0; i < str.length; i++) {\n    var c = str.charCodeAt(i);\n    if (c < 128) {\n      out[p++] = c;\n    } else if (c < 2048) {\n      out[p++] = (c >> 6) | 192;\n      out[p++] = (c & 63) | 128;\n    } else if (\n        ((c & 0xFC00) == 0xD800) && (i + 1) < str.length &&\n        ((str.charCodeAt(i + 1) & 0xFC00) == 0xDC00)) {\n      // Surrogate Pair\n      c = 0x10000 + ((c & 0x03FF) << 10) + (str.charCodeAt(++i) & 0x03FF);\n      out[p++] = (c >> 18) | 240;\n      out[p++] = ((c >> 12) & 63) | 128;\n      out[p++] = ((c >> 6) & 63) | 128;\n      out[p++] = (c & 63) | 128;\n    } else {\n      out[p++] = (c >> 12) | 224;\n      out[p++] = ((c >> 6) & 63) | 128;\n      out[p++] = (c & 63) | 128;\n    }\n  }\n  return out;\n};\n\n\n/**\n * Converts a UTF-8 byte array to JavaScript's 16-bit Unicode.\n * @param {Uint8Array|Array<number>} bytes UTF-8 byte array.\n * @return {string} 16-bit Unicode string.\n */\ngoog.crypt.utf8ByteArrayToString = function(bytes) {\n  // TODO(user): Use native implementations if/when available\n  var out = [], pos = 0, c = 0;\n  while (pos < bytes.length) {\n    var c1 = bytes[pos++];\n    if (c1 < 128) {\n      out[c++] = String.fromCharCode(c1);\n    } else if (c1 > 191 && c1 < 224) {\n      var c2 = bytes[pos++];\n      out[c++] = String.fromCharCode((c1 & 31) << 6 | c2 & 63);\n    } else if (c1 > 239 && c1 < 365) {\n      // Surrogate Pair\n      var c2 = bytes[pos++];\n      var c3 = bytes[pos++];\n      var c4 = bytes[pos++];\n      var u = ((c1 & 7) << 18 | (c2 & 63) << 12 | (c3 & 63) << 6 | c4 & 63) -\n          0x10000;\n      out[c++] = String.fromCharCode(0xD800 + (u >> 10));\n      out[c++] = String.fromCharCode(0xDC00 + (u & 1023));\n    } else {\n      var c2 = bytes[pos++];\n      var c3 = bytes[pos++];\n      out[c++] =\n          String.fromCharCode((c1 & 15) << 12 | (c2 & 63) << 6 | c3 & 63);\n    }\n  }\n  return out.join('');\n};\n\n\n/**\n * XOR two byte arrays.\n * @param {!Uint8Array|!Int8Array|!Array<number>} bytes1 Byte array 1.\n * @param {!Uint8Array|!Int8Array|!Array<number>} bytes2 Byte array 2.\n * @return {!Array<number>} Resulting XOR of the two byte arrays.\n */\ngoog.crypt.xorByteArray = function(bytes1, bytes2) {\n  goog.asserts.assert(\n      bytes1.length == bytes2.length, 'XOR array lengths must match');\n\n  var result = [];\n  for (var i = 0; i < bytes1.length; i++) {\n    result.push(bytes1[i] ^ bytes2[i]);\n  }\n  return result;\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the IdP provider IDs and related settings.\n */\n\ngoog.provide('fireauth.idp');\ngoog.provide('fireauth.idp.IdpSettings');\ngoog.provide('fireauth.idp.ProviderId');\ngoog.provide('fireauth.idp.Settings');\ngoog.provide('fireauth.idp.SignInMethod');\n\ngoog.require('fireauth.constants');\n\n\n/**\n * Enums for supported provider IDs. These provider IDs correspond to the\n * sign_in_provider in the Firebase ID token and do not correspond to the\n * supported client exposed firebase.auth.AuthProviders.\n * @enum {string}\n */\nfireauth.idp.ProviderId = {\n  ANONYMOUS: 'anonymous',\n  CUSTOM: 'custom',\n  FACEBOOK: 'facebook.com',\n  FIREBASE: 'firebase',\n  GITHUB: 'github.com',\n  GOOGLE: 'google.com',\n  PASSWORD: 'password',\n  PHONE: 'phone',\n  TWITTER: 'twitter.com'\n};\n\n\n/**\n * Enums for supported sign in methods.\n * @enum {string}\n */\nfireauth.idp.SignInMethod = {\n  EMAIL_LINK: 'emailLink',\n  EMAIL_PASSWORD: 'password',\n  FACEBOOK: 'facebook.com',\n  GITHUB: 'github.com',\n  GOOGLE: 'google.com',\n  PHONE: 'phone',\n  TWITTER: 'twitter.com'\n};\n\n\n/**\n * The settings of an identity provider. The fields are:\n * <ul>\n * <li>languageParam: defines the custom OAuth language parameter.\n * <li>popupWidth: defines the popup recommended width.\n * <li>popupHeight: defines the popup recommended height.\n * <li>providerId: defines the provider ID.\n * <li>reservedOAuthParameters: defines the list of reserved OAuth parameters.\n * </ul>\n * @typedef {{\n *   languageParam: (?string|undefined),\n *   popupWidth: (?number|undefined),\n *   popupHeight: (?number|undefined),\n *   providerId: !fireauth.idp.ProviderId,\n *   reservedOAuthParameters: !Array<string>\n * }}\n */\nfireauth.idp.IdpSettings;\n\n\n/**\n * The list of reserved OAuth 1.0 parameters.\n * @const {!Array<string>}\n */\nfireauth.idp.RESERVED_OAUTH1_PARAMS =\n    ['oauth_consumer_key', 'oauth_nonce', 'oauth_signature',\n     'oauth_signature_method', 'oauth_timestamp', 'oauth_token',\n     'oauth_version'];\n\n\n/**\n * The list of reserved OAuth 2.0 parameters.\n * @const {!Array<string>}\n */\nfireauth.idp.RESERVED_OAUTH2_PARAMS =\n    ['client_id', 'response_type', 'scope', 'redirect_uri', 'state'];\n\n\n/**\n * The recommendations for the different IdP display settings.\n * @enum {!fireauth.idp.IdpSettings}\n */\nfireauth.idp.Settings = {\n  FACEBOOK: {\n    languageParam: 'locale',\n    popupWidth: 700,\n    popupHeight: 600,\n    providerId: fireauth.idp.ProviderId.FACEBOOK,\n    reservedOAuthParameters: fireauth.idp.RESERVED_OAUTH2_PARAMS,\n  },\n  GITHUB: {\n    languageParam: null,\n    popupWidth: 500,\n    popupHeight: 750,\n    providerId: fireauth.idp.ProviderId.GITHUB,\n    reservedOAuthParameters: fireauth.idp.RESERVED_OAUTH2_PARAMS,\n  },\n  GOOGLE: {\n    languageParam: 'hl',\n    popupWidth: 515,\n    popupHeight: 680,\n    providerId: fireauth.idp.ProviderId.GOOGLE,\n    reservedOAuthParameters: fireauth.idp.RESERVED_OAUTH2_PARAMS,\n  },\n  TWITTER: {\n    languageParam: 'lang',\n    popupWidth: 485,\n    popupHeight: 705,\n    providerId: fireauth.idp.ProviderId.TWITTER,\n    reservedOAuthParameters: fireauth.idp.RESERVED_OAUTH1_PARAMS,\n  },\n  APPLE: {\n    languageParam: 'locale',\n    popupWidth: 640,\n    popupHeight: 600,\n    providerId: 'apple.com',\n    reservedOAuthParameters: [],\n  },\n};\n\n\n/**\n * @param {!fireauth.idp.ProviderId} providerId The requested provider ID.\n * @return {?fireauth.idp.Settings} The settings for the requested provider ID.\n */\nfireauth.idp.getIdpSettings = function(providerId) {\n  for (var key in fireauth.idp.Settings) {\n    if (fireauth.idp.Settings[key].providerId == providerId) {\n      return fireauth.idp.Settings[key];\n    }\n  }\n  return null;\n};\n\n\n/**\n * @param {!fireauth.idp.ProviderId} providerId The requested provider ID.\n * @return {!Array<string>} The list of reserved OAuth parameters.\n */\nfireauth.idp.getReservedOAuthParams = function(providerId) {\n  var settings = fireauth.idp.getIdpSettings(providerId);\n  return (settings && settings.reservedOAuthParameters) || [];\n};\n\n\n/**\n * @param {?string|undefined} identifier The provider identifier.\n * @return {boolean} Whether the identifier provided is a SAML provider ID.\n */\nfireauth.idp.isSaml = function(identifier) {\n   return typeof identifier === 'string' &&\n     identifier.indexOf(fireauth.constants.SAML_PREFIX) == 0;\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines all the fireauth additional user info interfaces,\n * implementations and subclasses.\n */\n\ngoog.provide('fireauth.AdditionalUserInfo');\ngoog.provide('fireauth.FacebookAdditionalUserInfo');\ngoog.provide('fireauth.FederatedAdditionalUserInfo');\ngoog.provide('fireauth.GenericAdditionalUserInfo');\ngoog.provide('fireauth.GithubAdditionalUserInfo');\ngoog.provide('fireauth.GoogleAdditionalUserInfo');\ngoog.provide('fireauth.TwitterAdditionalUserInfo');\n\ngoog.require('fireauth.IdToken');\ngoog.require('fireauth.idp');\ngoog.require('fireauth.object');\ngoog.require('fireauth.util');\n\n\n/**\n * The interface that represents additional user info.\n * @interface\n */\nfireauth.AdditionalUserInfo = function() {};\n\n\n/**\n * Constructs the corresponding additional user info for the backend\n * verifyAssertion response.\n * @param {?Object|undefined} resp The backend verifyAssertion,\n *     verifyPhoneNumber or verifyPassword/setAccountInfo response.\n * @return {?fireauth.AdditionalUserInfo} The fireauth.AdditionalUserInfo\n *     instance.\n */\nfireauth.AdditionalUserInfo.fromPlainObject = function(resp) {\n  var factory = {};\n  factory[fireauth.idp.ProviderId.FACEBOOK] =\n      fireauth.FacebookAdditionalUserInfo;\n  factory[fireauth.idp.ProviderId.GOOGLE] =\n      fireauth.GoogleAdditionalUserInfo;\n  factory[fireauth.idp.ProviderId.GITHUB] =\n      fireauth.GithubAdditionalUserInfo;\n  factory[fireauth.idp.ProviderId.TWITTER] =\n      fireauth.TwitterAdditionalUserInfo;\n  // Provider ID and UID are required.\n  var providerId =\n      resp &&\n      resp[fireauth.AdditionalUserInfo.VerifyAssertionField.PROVIDER_ID];\n  try {\n    // Provider ID already present.\n    if (providerId) {\n      if (factory[providerId]) {\n        // 1st class supported federated providers.\n        return new factory[providerId](resp);\n      } else {\n        // Generic federated providers.\n        return new fireauth.FederatedAdditionalUserInfo(\n            /** @type {!Object} */ (resp));\n      }\n    } else if (typeof resp[fireauth.AdditionalUserInfo.VerifyAssertionField\n                           .ID_TOKEN] !== 'undefined') {\n      // For all other ID token responses with no providerId, get the required\n      // providerId from the ID token itself.\n      return new fireauth.GenericAdditionalUserInfo(\n          /** @type {!Object} */ (resp));\n    }\n  } catch (e) {\n    // Do nothing, null will be returned.\n  }\n  return null;\n};\n\n\n\n/**\n * verifyAssertion response additional user info fields.\n * @enum {string}\n */\nfireauth.AdditionalUserInfo.VerifyAssertionField = {\n  ID_TOKEN: 'idToken',\n  IS_NEW_USER: 'isNewUser',\n  KIND: 'kind',\n  PROVIDER_ID: 'providerId',\n  RAW_USER_INFO: 'rawUserInfo',\n  SCREEN_NAME: 'screenName'\n};\n\n\n/**\n * Constructs a generic additional user info object from the backend\n * verifyPhoneNumber and verifyPassword provider response.\n * @param {!Object} info The verifyPhoneNumber/verifyPassword/setAccountInfo\n *     response data object.\n * @constructor\n * @implements {fireauth.AdditionalUserInfo}\n */\nfireauth.GenericAdditionalUserInfo = function(info) {\n  // Federated provider profile data.\n  var providerId =\n      info[fireauth.AdditionalUserInfo.VerifyAssertionField.PROVIDER_ID];\n  // Try to get providerId from the ID token if available.\n  if (!providerId &&\n      info[fireauth.AdditionalUserInfo.VerifyAssertionField.ID_TOKEN]) {\n    // verifyPassword/setAccountInfo and verifyPhoneNumber return an ID token\n    // but no providerId. Get providerId from the token itself.\n    // isNewUser will be returned for verifyPhoneNumber.\n    var idToken = fireauth.IdToken.parse(\n        info[fireauth.AdditionalUserInfo.VerifyAssertionField.ID_TOKEN]);\n    if (idToken && idToken.getProviderId()) {\n      providerId = idToken.getProviderId();\n    }\n  }\n  if (!providerId) {\n    // This is internal only.\n    throw new Error('Invalid additional user info!');\n  }\n  // For custom token and anonymous token, set provider ID to null.\n  if (providerId == fireauth.idp.ProviderId.ANONYMOUS ||\n      providerId == fireauth.idp.ProviderId.CUSTOM) {\n      providerId = null;\n  }\n  // Check whether user is new. Temporary Solution since backend does not return\n  // isNewUser field for SignupNewUserResponse.\n  var isNewUser = false;\n  if (typeof info[fireauth.AdditionalUserInfo.VerifyAssertionField.IS_NEW_USER]\n      !== 'undefined') {\n    isNewUser =\n        !!info[fireauth.AdditionalUserInfo.VerifyAssertionField.IS_NEW_USER];\n  } else if (info[fireauth.AdditionalUserInfo.VerifyAssertionField.KIND]\n             === 'identitytoolkit#SignupNewUserResponse') {\n    //For SignupNewUserResponse, always set isNewUser to true.\n    isNewUser = true;\n  }\n  // Set required providerId.\n  fireauth.object.setReadonlyProperty(this, 'providerId', providerId);\n  // Set read-only isNewUser property.\n  fireauth.object.setReadonlyProperty(this, 'isNewUser', isNewUser);\n};\n\n\n/**\n * Constructs a federated additional user info object from the backend\n * verifyAssertion federated provider response.\n * @param {!Object} info The verifyAssertion response data object.\n * @constructor\n * @extends {fireauth.GenericAdditionalUserInfo}\n */\nfireauth.FederatedAdditionalUserInfo = function(info) {\n  fireauth.FederatedAdditionalUserInfo.base(this, 'constructor', info);\n  // Federated provider profile data.\n  // This structure will also be used for generic IdPs.\n  var profile = fireauth.util.parseJSON(\n      info[fireauth.AdditionalUserInfo.VerifyAssertionField.RAW_USER_INFO] ||\n      '{}');\n  // Set read-only profile property.\n  fireauth.object.setReadonlyProperty(\n      this,\n      'profile',\n      fireauth.object.unsafeCreateReadOnlyCopy(profile || {}));\n};\ngoog.inherits(\n    fireauth.FederatedAdditionalUserInfo, fireauth.GenericAdditionalUserInfo);\n\n\n/**\n * Constructs a Facebook additional user info object from the backend\n * verifyAssertion Facebook provider response.\n * @param {!Object} info The verifyAssertion response data object.\n * @constructor\n * @extends {fireauth.FederatedAdditionalUserInfo}\n */\nfireauth.FacebookAdditionalUserInfo = function(info) {\n  fireauth.FacebookAdditionalUserInfo.base(this, 'constructor', info);\n  // This should not happen as this object is initialized via fromPlainObject.\n  if (this['providerId'] != fireauth.idp.ProviderId.FACEBOOK) {\n    throw new Error('Invalid provider ID!');\n  }\n};\ngoog.inherits(\n    fireauth.FacebookAdditionalUserInfo, fireauth.FederatedAdditionalUserInfo);\n\n\n\n/**\n * Constructs a GitHub additional user info object from the backend\n * verifyAssertion GitHub provider response.\n * @param {!Object} info The verifyAssertion response data object.\n * @constructor\n * @extends {fireauth.FederatedAdditionalUserInfo}\n */\nfireauth.GithubAdditionalUserInfo = function(info) {\n  fireauth.GithubAdditionalUserInfo.base(this, 'constructor', info);\n  // This should not happen as this object is initialized via fromPlainObject.\n  if (this['providerId'] != fireauth.idp.ProviderId.GITHUB) {\n    throw new Error('Invalid provider ID!');\n  }\n  // GitHub username.\n  fireauth.object.setReadonlyProperty(\n      this,\n      'username',\n      (this['profile'] && this['profile']['login']) || null);\n};\ngoog.inherits(\n    fireauth.GithubAdditionalUserInfo, fireauth.FederatedAdditionalUserInfo);\n\n\n\n/**\n * Constructs a Google additional user info object from the backend\n * verifyAssertion Google provider response.\n * @param {!Object} info The verifyAssertion response data object.\n * @constructor\n * @extends {fireauth.FederatedAdditionalUserInfo}\n */\nfireauth.GoogleAdditionalUserInfo = function(info) {\n  fireauth.GoogleAdditionalUserInfo.base(this, 'constructor', info);\n  // This should not happen as this object is initialized via fromPlainObject.\n  if (this['providerId'] != fireauth.idp.ProviderId.GOOGLE) {\n    throw new Error('Invalid provider ID!');\n  }\n};\ngoog.inherits(\n    fireauth.GoogleAdditionalUserInfo, fireauth.FederatedAdditionalUserInfo);\n\n\n\n/**\n * Constructs a Twitter additional user info object from the backend\n * verifyAssertion Twitter provider response.\n * @param {!Object} info The verifyAssertion response data object.\n * @constructor\n * @extends {fireauth.FederatedAdditionalUserInfo}\n */\nfireauth.TwitterAdditionalUserInfo = function(info) {\n  fireauth.TwitterAdditionalUserInfo.base(this, 'constructor', info);\n  // This should not happen as this object is initialized via fromPlainObject.\n  if (this['providerId'] != fireauth.idp.ProviderId.TWITTER) {\n    throw new Error('Invalid provider ID!');\n  }\n  // Twitter user name.\n  fireauth.object.setReadonlyProperty(\n      this,\n      'username',\n      info[fireauth.AdditionalUserInfo.VerifyAssertionField.SCREEN_NAME] ||\n      null);\n};\ngoog.inherits(\n    fireauth.TwitterAdditionalUserInfo, fireauth.FederatedAdditionalUserInfo);\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the Firebase dynamic link constructor.\n */\n\ngoog.provide('fireauth.DynamicLink');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.object');\ngoog.require('fireauth.util');\ngoog.require('goog.Uri');\n\n\n/**\n * Dynamic link builder used to help build the FDL link to redirect to an app\n * while passing some payload or error.\n * @param {?string} fdlDomain The FDL domain. If none is available, custom\n *     scheme redirects are used.\n * @param {!fireauth.DynamicLink.Platform} platform The FDL supported\n *     platform (Android or iOS).\n * @param {string} appIdentifier The app identifier (iOS bundle ID or Android\n *     package name).\n * @param {string} authDomain The Firebase application authDomain.\n * @param {string} payload The FDL deep link content.\n * @param {?string=} opt_clientId The optional OAuth client ID.\n * @constructor\n */\nfireauth.DynamicLink = function(fdlDomain, platform, appIdentifier, authDomain,\n    payload, opt_clientId) {\n  // The fallback error when the app is not installed on the device.\n  var defaultError =\n      new fireauth.AuthError(fireauth.authenum.Error.APP_NOT_INSTALLED);\n  /** @private {string} The fallback URL when the app is not installed. */\n  this.fallbackUrl_ = 'https://' + authDomain + '/__/auth/handler?' +\n      'firebaseError=' + encodeURIComponent(/** @type {string} */ (\n          fireauth.util.stringifyJSON(defaultError.toPlainObject())));\n  fireauth.object.setReadonlyProperty(this, 'fallbackUrl', this.fallbackUrl_);\n  /** @private {?string} The FDL domain if available. */\n  this.fdlDomain_ = fdlDomain;\n  fireauth.object.setReadonlyProperty(this, 'fdlDomain', fdlDomain);\n  /** @private {!fireauth.DynamicLink.Platform} The FDL link platform. */\n  this.platform_ = platform;\n  fireauth.object.setReadonlyProperty(this, 'platform', platform);\n  /** @private {string} The app identifier. */\n  this.appIdentifier_ = appIdentifier;\n  fireauth.object.setReadonlyProperty(this, 'appIdentifier', appIdentifier);\n  /** @private {string} The Firebase application authDomain. */\n  this.authDomain_ = authDomain;\n  fireauth.object.setReadonlyProperty(this, 'authDomain', authDomain);\n  /** @private {string} The FDL deep link content. */\n  this.link_ = payload;\n  fireauth.object.setReadonlyProperty(this, 'payload', payload);\n  /** @private {?string} The application display name. */\n  this.appName_ = null;\n  fireauth.object.setReadonlyProperty(this, 'appName', null);\n  /** @private {?string} The client ID if available. */\n  this.clientId_ = opt_clientId || null;\n  fireauth.object.setReadonlyProperty(this, 'clientId', this.clientId_);\n};\n\n\n/**\n * Sets the app name for the current dynamic link.\n * @param {?string|undefined} appName The app name typically displayed in an FDL\n *     button.\n */\nfireauth.DynamicLink.prototype.setAppName = function(appName) {\n  this.appName_ = appName || null;\n  fireauth.object.setReadonlyProperty(this, 'appName', appName);\n};\n\n\n/**\n * Sets the dynamic link fallback URL overriding the default one.\n * @param {string} fallbackUrl The dynamic link fallback URL.\n */\nfireauth.DynamicLink.prototype.setFallbackUrl = function(fallbackUrl) {\n  this.fallbackUrl_ = fallbackUrl;\n  fireauth.object.setReadonlyProperty(this, 'fallbackUrl', fallbackUrl);\n};\n\n\n/**\n * Parses a dynamic link object from an automatic FDL redirect link.\n * @param {string} url The URL string to parse and convert to a dynamic link.\n * @return {?fireauth.DynamicLink} The corresponding dynamic link if applicable.\n */\nfireauth.DynamicLink.fromURL = function(url) {\n  // This constructs the Dynamic link from the URL provided.\n  var uri = goog.Uri.parse(url);\n  var fdlDomain = uri.getParameterValue('fdlDomain');\n  var platform = uri.getParameterValue('platform');\n  var appIdentifier = uri.getParameterValue('appIdentifier');\n  var authDomain = uri.getParameterValue('authDomain');\n  var payload = uri.getParameterValue('link');\n  var appName = uri.getParameterValue('appName');\n  if (fdlDomain && platform && appIdentifier && authDomain && payload &&\n      appName) {\n    var dl = new fireauth.DynamicLink(\n        /** @type {string} */ (fdlDomain),\n        /** @type {!fireauth.DynamicLink.Platform} */ (platform),\n        /** @type {string} */ (appIdentifier),\n        /** @type {string} */ (authDomain),\n        /** @type {string} */ (payload));\n    dl.setAppName(appName);\n    return dl;\n  }\n  return null;\n};\n\n\n/**\n * @param {string} url The dynamic link URL.\n * @return {string} The deep link embedded within the dynamic link.\n */\nfireauth.DynamicLink.parseDeepLink = function(url) {\n  var uri = goog.Uri.parse(url);\n  var link = uri.getParameterValue('link');\n  // Double link case (automatic redirect).\n  var doubleDeepLink = goog.Uri.parse(link).getParameterValue('link');\n  // iOS custom scheme links.\n  var iOSdeepLink = uri.getParameterValue('deep_link_id');\n  var iOSDoubledeepLink = goog.Uri.parse(iOSdeepLink).getParameterValue('link');\n  var callbackUrl =\n      iOSDoubledeepLink || iOSdeepLink || doubleDeepLink || link || url;\n  return callbackUrl;\n};\n\n\n/**\n * The supported FDL platforms.\n * @enum {string}\n */\nfireauth.DynamicLink.Platform = {\n  ANDROID: 'android',\n  IOS: 'ios'\n};\n\n\n/**\n * Constructs the common FDL link base used for building the button link or the\n * automatic redirect link.\n * @param {string} fallbackUrl The fallback URL to use.\n * @return {!goog.Uri} The partial URI of the FDL link used to build the final\n *     button link or the automatic redirect link.\n * @private\n */\nfireauth.DynamicLink.prototype.constructFdlBase_ = function(fallbackUrl) {\n  var uri = goog.Uri.create(\n      'https',\n      null,\n      this.fdlDomain_,\n      null,\n      '/');\n  if (this.platform_ == fireauth.DynamicLink.Platform.ANDROID) {\n    uri.setParameterValue('apn', this.appIdentifier_);\n    uri.setParameterValue('afl', fallbackUrl);\n  } else if (this.platform_ == fireauth.DynamicLink.Platform.IOS) {\n    uri.setParameterValue('ibi', this.appIdentifier_);\n    uri.setParameterValue('ifl', fallbackUrl);\n  }\n  return uri;\n};\n\n\n/**\n * Constructs the custom scheme URL. This is used when no FDL domain is\n * available.\n * @return {!goog.Uri} The uri of the dynamic link used to build the final\n *      button link or the automatic redirect link.\n * @private\n */\nfireauth.DynamicLink.prototype.constructCustomSchemeUrl_ = function() {\n  // This mimics the FDL custom scheme URL format.\n  var uri = goog.Uri.create(\n      this.clientId_ ? this.clientId_.split('.').reverse().join('.') :\n          this.appIdentifier_,\n      null,\n      // 'firebaseauth' is used in the app verification flow.\n      // 'google' is used for the Cordova iOS flow.\n      this.clientId_ ? 'firebaseauth' : 'google',\n      null,\n      '/link');\n  uri.setParameterValue('deep_link_id', this.link_);\n  return uri;\n};\n\n\n/**\n * @param {boolean=} opt_isAutoRedirect Whether the link is an auto redirect\n *     link.\n * @return {string} The generated dynamic link string.\n * @override\n */\nfireauth.DynamicLink.prototype.toString = function(opt_isAutoRedirect) {\n  // When FDL domain is not available, always returns the custom scheme URL.\n  if (!this.fdlDomain_) {\n    return this.constructCustomSchemeUrl_().toString();\n  }\n  if (!!opt_isAutoRedirect) {\n    return this.generateAutomaticRedirectLink_();\n  }\n  return this.generateButtonLink_();\n};\n\n\n/**\n * @return {string} The final FDL button link.\n * @private\n */\nfireauth.DynamicLink.prototype.generateButtonLink_ = function() {\n  var fdlLink = this.constructFdlBase_(this.fallbackUrl_);\n  fdlLink.setParameterValue('link', this.link_);\n  return fdlLink.toString();\n};\n\n\n/**\n * @return {string} The final FDL automatic redirect link.\n * @private\n */\nfireauth.DynamicLink.prototype.generateAutomaticRedirectLink_ =\n    function() {\n  var doubleDeeplink = goog.Uri.create(\n      'https',\n      null,\n      this.authDomain_,\n      null,\n      '/__/auth/callback');\n  doubleDeeplink.setParameterValue('fdlDomain', this.fdlDomain_);\n  doubleDeeplink.setParameterValue('platform', this.platform_);\n  doubleDeeplink.setParameterValue('appIdentifier', this.appIdentifier_);\n  doubleDeeplink.setParameterValue('authDomain', this.authDomain_);\n  doubleDeeplink.setParameterValue('link', this.link_);\n  doubleDeeplink.setParameterValue('appName', this.appName_ || '');\n  // The fallback URL is the deep link itself.\n  // This is in case the link fails to be intercepted by the app, FDL will\n  // redirect to the fallback URL.\n  var fdlLink = this.constructFdlBase_(doubleDeeplink.toString());\n  fdlLink.setParameterValue('link', doubleDeeplink.toString());\n  return fdlLink.toString();\n};\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the multi-factor session object used for enrolling a\n * second factor on a user or helping sign in an enrolled user with a second\n * factor.\n */\n\ngoog.provide('fireauth.MultiFactorSession');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.authenum.Error');\ngoog.require('goog.Promise');\n\n\n/**\n * Initializes an instance of a multi-factor session object used for enrolling\n * a second factor on a user or helping sign in an enrolled user with a second\n * factor.\n * This will be constructed either after calling `user.getIdToken()` or from the\n * error containing the pending MFA credential after sign-in.\n * @param {?string} idToken The ID token for an enroll flow. This has to be\n *     retrieved after recent authentication.\n * @param {?string=} mfaPendingCredential The pending credential after an\n *     enrolled second factor user signs in successfully with the first factor.\n * @constructor\n */\nfireauth.MultiFactorSession = function(idToken, mfaPendingCredential) {\n  if (!idToken && !mfaPendingCredential) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.INTERNAL_ERROR,\n        'Internal assert: no raw session string available');\n  }\n  // Both fields should never be passed at the same time.\n  if (idToken && mfaPendingCredential) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.INTERNAL_ERROR,\n        'Internal assert: unable to determine the session type');\n  }\n  /** @const @private {?string} The ID token for an enroll flow. */\n  this.idToken_ = idToken || null;\n  /** @const @private {?string} The pending credential for a sign-in flow. */\n  this.mfaPendingCredential_ = mfaPendingCredential || null;\n  /** @const @public {!fireauth.MultiFactorSession.Type} The session type.*/\n  this.type = this.idToken_ ?\n      fireauth.MultiFactorSession.Type.ENROLL :\n      fireauth.MultiFactorSession.Type.SIGN_IN;\n};\n\n\n/**\n * Enum representing the type of multi-factor session.\n * @enum {string}\n */\nfireauth.MultiFactorSession.Type = {\n  ENROLL: 'enroll',\n  SIGN_IN: 'signin'\n};\n\n\n/**\n * Returns a promise that resolves with the raw session string.\n * @return {!goog.Promise<string>} A promise that resolves with the raw session\n *     string.\n */\nfireauth.MultiFactorSession.prototype.getRawSession = function() {\n  return this.idToken_ ?\n      goog.Promise.resolve(this.idToken_) :\n      goog.Promise.resolve(this.mfaPendingCredential_);\n};\n\n\n/**\n * Returns the plain object representation of the session object.\n * @return {!Object} The plain object representation of the session object.\n */\nfireauth.MultiFactorSession.prototype.toPlainObject = function() {\n  if (this.type == fireauth.MultiFactorSession.Type.ENROLL) {\n    return {\n      'multiFactorSession': {\n        'idToken': this.idToken_\n      }\n    };\n  } else {\n    return {\n      'multiFactorSession': {\n        'pendingCredential': this.mfaPendingCredential_\n      }\n    };\n  }\n};\n\n\n/**\n * Converts a plain object to a `fireauth.MultiFactorSession` if applicable.\n * @param {?Object} obj The plain object to convert to a\n *     `fireauth.MultiFactorSession`.\n * @return {?fireauth.MultiFactorSession} The corresponding\n *     `fireauth.MultiFactorSession` representation, null otherwise.\n */\nfireauth.MultiFactorSession.fromPlainObject = function(obj) {\n  if (obj && obj['multiFactorSession']) {\n    if (obj['multiFactorSession']['pendingCredential']) {\n      return new fireauth.MultiFactorSession(\n          null, obj['multiFactorSession']['pendingCredential']);\n    } else if (obj['multiFactorSession']['idToken']) {\n      return new fireauth.MultiFactorSession(\n          obj['multiFactorSession']['idToken'], null);\n    }\n  }\n  return null;\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines Auth credentials used for signInWithCredential.\n */\n\ngoog.provide('fireauth.AuthCredential');\ngoog.provide('fireauth.AuthProvider');\ngoog.provide('fireauth.EmailAuthCredential');\ngoog.provide('fireauth.EmailAuthProvider');\ngoog.provide('fireauth.FacebookAuthProvider');\ngoog.provide('fireauth.FederatedProvider');\ngoog.provide('fireauth.GithubAuthProvider');\ngoog.provide('fireauth.GoogleAuthProvider');\ngoog.provide('fireauth.OAuthCredential');\ngoog.provide('fireauth.OAuthProvider');\ngoog.provide('fireauth.OAuthResponse');\ngoog.provide('fireauth.PhoneAuthCredential');\ngoog.provide('fireauth.PhoneAuthProvider');\ngoog.provide('fireauth.SAMLAuthCredential');\ngoog.provide('fireauth.SAMLAuthProvider');\ngoog.provide('fireauth.TwitterAuthProvider');\n\ngoog.requireType('fireauth.RpcHandler');\ngoog.require('fireauth.ActionCodeInfo');\ngoog.require('fireauth.ActionCodeURL');\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.DynamicLink');\ngoog.require('fireauth.IdToken');\ngoog.require('fireauth.MultiFactorAuthCredential');\ngoog.require('fireauth.MultiFactorEnrollmentRequestIdentifier');\ngoog.require('fireauth.MultiFactorSession');\ngoog.require('fireauth.MultiFactorSignInRequestIdentifier');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.constants');\ngoog.require('fireauth.idp');\ngoog.require('fireauth.object');\ngoog.require('fireauth.util');\ngoog.require('goog.Promise');\ngoog.require('goog.Uri');\ngoog.require('goog.array');\ngoog.require('goog.object');\n\n\n\n/**\n * The interface that represents Auth credential. It provides the underlying\n * implementation for retrieving the ID token depending on the type of\n * credential.\n * @interface\n */\nfireauth.AuthCredential = function() {};\n\n\n/**\n * Returns a promise to retrieve ID token using the underlying RPC handler API\n * for the current credential.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler.\n * @return {!goog.Promise<!Object, !fireauth.AuthError>}\n *     idTokenPromise The RPC handler method that returns a promise which\n *     resolves with an ID token.\n */\nfireauth.AuthCredential.prototype.getIdTokenProvider = function(rpcHandler) {};\n\n\n/**\n * Links the credential to an existing account, identified by an ID token.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler.\n * @param {string} idToken The ID token of the existing account.\n * @return {!goog.Promise<!Object>} A Promise that resolves when the accounts\n *     are linked.\n */\nfireauth.AuthCredential.prototype.linkToIdToken =\n    function(rpcHandler, idToken) {};\n\n\n/**\n * Tries to match the credential's idToken with the provided UID.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler.\n * @param {string} uid The UID of the user to reauthenticate.\n * @return {!goog.Promise<!Object>} A Promise that resolves when\n *     idToken UID match succeeds and returns the server response.\n */\nfireauth.AuthCredential.prototype.matchIdTokenWithUid =\n    function(rpcHandler, uid) {};\n\n\n/**\n * @return {!Object} The plain object representation of an Auth credential. This\n *     will be exposed as toJSON() externally.\n */\nfireauth.AuthCredential.prototype.toPlainObject = function() {};\n\n\n/**\n * @param {!goog.Promise<!Object>} idTokenResolver A promise that resolves with\n *     the ID token response.\n * @param {string} uid The UID to match in the token response.\n * @return {!goog.Promise<!Object>} A promise that resolves with the same\n *     response if the UID matches.\n */\nfireauth.AuthCredential.verifyTokenResponseUid =\n    function(idTokenResolver, uid) {\n  return idTokenResolver.then(function(response) {\n    // This should not happen as rpcHandler verifyAssertion and verifyPassword\n    // always guarantee an ID token is available.\n    if (response[fireauth.RpcHandler.AuthServerField.ID_TOKEN]) {\n      // Parse the token object.\n      var parsedIdToken = fireauth.IdToken.parse(\n          response[fireauth.RpcHandler.AuthServerField.ID_TOKEN]);\n      // Confirm token localId matches the provided UID. If not, throw the user\n      // mismatch error.\n      if (!parsedIdToken || uid != parsedIdToken.getLocalId()) {\n        throw new fireauth.AuthError(fireauth.authenum.Error.USER_MISMATCH);\n      }\n      return response;\n    }\n    throw new fireauth.AuthError(fireauth.authenum.Error.USER_MISMATCH);\n  })\n  .thenCatch(function(error) {\n    // Translate auth/user-not-found error directly to auth/user-mismatch.\n    throw fireauth.AuthError.translateError(\n        error,\n        fireauth.authenum.Error.USER_DELETED,\n        fireauth.authenum.Error.USER_MISMATCH);\n  });\n};\n\n\n\n/**\n * The interface that represents the Auth provider.\n * @interface\n */\nfireauth.AuthProvider = function() {};\n\n\n/**\n * @param {...*} var_args The credential data.\n * @return {!fireauth.AuthCredential} The Auth provider credential.\n */\nfireauth.AuthProvider.credential;\n\n\n/**\n * @typedef {{\n *   accessToken: (?string|undefined),\n *   idToken: (?string|undefined),\n *   nonce: (?string|undefined),\n *   oauthToken: (?string|undefined),\n *   oauthTokenSecret: (?string|undefined),\n *   pendingToken: (?string|undefined)\n * }}\n */\nfireauth.OAuthResponse;\n\n\n/**\n * The SAML Auth credential class. The Constructor is not publicly visible.\n * This is constructed by the SDK on successful or failure after SAML sign-in\n * and returned to developer.\n * @param {!fireauth.idp.ProviderId} providerId The provider ID.\n * @param {string} pendingToken The SAML response pending token.\n * @constructor\n * @implements {fireauth.AuthCredential}\n */\nfireauth.SAMLAuthCredential = function(providerId, pendingToken) {\n  if (pendingToken) {\n    /** @private {string} The pending token where SAML response is encrypted. */\n    this.pendingToken_ = pendingToken;\n  } else {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR,\n        'failed to construct a credential');\n  }\n\n  fireauth.object.setReadonlyProperty(this, 'providerId', providerId);\n  fireauth.object.setReadonlyProperty(this, 'signInMethod', providerId);\n};\n\n\n/**\n * Returns a promise to retrieve ID token using the underlying RPC handler API\n * for the current credential.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler.\n * @return {!goog.Promise<!Object, !fireauth.AuthError>}\n *     idTokenPromise The RPC handler method that returns a promise which\n *     resolves with an ID token.\n * @override\n */\nfireauth.SAMLAuthCredential.prototype.getIdTokenProvider =\n    function(rpcHandler) {\n  return rpcHandler.verifyAssertion(\n      /** @type {!fireauth.RpcHandler.VerifyAssertionData} */ (\n      this.makeVerifyAssertionRequest_()));\n};\n\n\n/**\n * Links the credential to an existing account, identified by an ID token.\n * @param {!fireauth.RpcHandler} rpcHandler The rpc handler.\n * @param {string} idToken The ID token of the existing account.\n * @return {!goog.Promise<!Object>} A Promise that resolves when the accounts\n *     are linked, returning the backend response.\n * @override\n */\nfireauth.SAMLAuthCredential.prototype.linkToIdToken =\n    function(rpcHandler, idToken) {\n  var request = this.makeVerifyAssertionRequest_();\n  request['idToken'] = idToken;\n  return rpcHandler.verifyAssertionForLinking(\n      /** @type {!fireauth.RpcHandler.VerifyAssertionData} */ (request));\n};\n\n\n/**\n * Tries to match the credential's idToken with the provided UID.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler.\n * @param {string} uid The UID of the user to reauthenticate.\n * @return {!goog.Promise<!Object>} A Promise that resolves when\n *     idToken UID match succeeds and returns the server response.\n * @override\n */\nfireauth.SAMLAuthCredential.prototype.matchIdTokenWithUid =\n    function(rpcHandler, uid) {\n  var request = this.makeVerifyAssertionRequest_();\n  // Do not create a new account if the user doesn't exist.\n  return fireauth.AuthCredential.verifyTokenResponseUid(\n      rpcHandler.verifyAssertionForExisting(\n          /** @type {!fireauth.RpcHandler.VerifyAssertionData} */ (request)),\n      uid);\n};\n\n\n/**\n * @return {!Object} A request to the VerifyAssertion endpoint, populated with\n *     the assertion data from this credential.\n * @private\n */\nfireauth.SAMLAuthCredential.prototype.makeVerifyAssertionRequest_ =\n    function() {\n  return {\n    'pendingToken': this.pendingToken_,\n    // Always use http://localhost.\n    'requestUri': 'http://localhost'\n  };\n};\n\n\n/**\n * @return {!Object} The plain object representation of an Auth credential.\n * @override\n */\nfireauth.SAMLAuthCredential.prototype.toPlainObject = function() {\n  return {\n    'providerId': this['providerId'],\n    'signInMethod': this['signInMethod'],\n    'pendingToken': this.pendingToken_\n  };\n};\n\n\n/**\n * @param {?Object|undefined} json The plain object representation of a\n *     SAMLAuthCredential.\n * @return {?fireauth.SAMLAuthCredential} The SAML credential if the object\n *     is a JSON representation of a SAMLAuthCredential, null otherwise.\n */\nfireauth.SAMLAuthCredential.fromJSON = function(json) {\n  if (json &&\n      json['providerId'] &&\n      json['signInMethod'] &&\n      json['providerId'].indexOf(fireauth.constants.SAML_PREFIX) == 0 &&\n      json['pendingToken']) {\n    try {\n      return new fireauth.SAMLAuthCredential(\n          json['providerId'], json['pendingToken']);\n    } catch (e) {\n      return null;\n    }\n  }\n  return null;\n};\n\n\n/**\n * The OAuth credential class.\n * @param {!fireauth.idp.ProviderId} providerId The provider ID.\n * @param {!fireauth.OAuthResponse} oauthResponse The OAuth\n *     response object containing token information.\n * @param {!fireauth.idp.SignInMethod} signInMethod The sign in method.\n * @constructor\n * @implements {fireauth.AuthCredential}\n */\nfireauth.OAuthCredential = function(providerId, oauthResponse, signInMethod) {\n  /**\n   * @private {?string} The pending token where the IdP response is encrypted.\n   */\n  this.pendingToken_ = null;\n  if (oauthResponse['idToken'] || oauthResponse['accessToken']) {\n    // OAuth 2 and either ID token or access token.\n    if (oauthResponse['idToken']) {\n      fireauth.object.setReadonlyProperty(\n          this, 'idToken', oauthResponse['idToken']);\n    }\n    if (oauthResponse['accessToken']) {\n      fireauth.object.setReadonlyProperty(\n          this, 'accessToken', oauthResponse['accessToken']);\n    }\n    // Add nonce if available and no pendingToken is present.\n    if (oauthResponse['nonce'] && !oauthResponse['pendingToken']) {\n      fireauth.object.setReadonlyProperty(\n          this, 'nonce', oauthResponse['nonce']);\n    }\n    if (oauthResponse['pendingToken']) {\n      this.pendingToken_ = oauthResponse['pendingToken'];\n    }\n  } else if (oauthResponse['oauthToken'] &&\n             oauthResponse['oauthTokenSecret'])  {\n    // OAuth 1 and OAuth token with OAuth token secret.\n    fireauth.object.setReadonlyProperty(\n        this, 'accessToken', oauthResponse['oauthToken']);\n    fireauth.object.setReadonlyProperty(\n        this, 'secret', oauthResponse['oauthTokenSecret']);\n  } else {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR,\n        'failed to construct a credential');\n  }\n\n  fireauth.object.setReadonlyProperty(this, 'providerId', providerId);\n  fireauth.object.setReadonlyProperty(this, 'signInMethod', signInMethod);\n};\n\n\n/**\n * Returns a promise to retrieve ID token using the underlying RPC handler API\n * for the current credential.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler.\n * @return {!goog.Promise<!Object, !fireauth.AuthError>}\n *     idTokenPromise The RPC handler method that returns a promise which\n *     resolves with an ID token.\n * @override\n */\nfireauth.OAuthCredential.prototype.getIdTokenProvider = function(rpcHandler) {\n  return rpcHandler.verifyAssertion(\n      /** @type {!fireauth.RpcHandler.VerifyAssertionData} */ (\n      this.makeVerifyAssertionRequest_()));\n};\n\n\n/**\n * Links the credential to an existing account, identified by an ID token.\n * @param {!fireauth.RpcHandler} rpcHandler The rpc handler.\n * @param {string} idToken The ID token of the existing account.\n * @return {!goog.Promise<!Object>} A Promise that resolves when the accounts\n *     are linked, returning the backend response.\n * @override\n */\nfireauth.OAuthCredential.prototype.linkToIdToken =\n    function(rpcHandler, idToken) {\n  var request = this.makeVerifyAssertionRequest_();\n  request['idToken'] = idToken;\n  return rpcHandler.verifyAssertionForLinking(\n      /** @type {!fireauth.RpcHandler.VerifyAssertionData} */ (request));\n};\n\n\n/**\n * Tries to match the credential's idToken with the provided UID.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler.\n * @param {string} uid The UID of the user to reauthenticate.\n * @return {!goog.Promise<!Object>} A Promise that resolves when\n *     idToken UID match succeeds and returns the server response.\n * @override\n */\nfireauth.OAuthCredential.prototype.matchIdTokenWithUid =\n    function(rpcHandler, uid) {\n  var request = this.makeVerifyAssertionRequest_();\n  // Do not create a new account if the user doesn't exist.\n  return fireauth.AuthCredential.verifyTokenResponseUid(\n      rpcHandler.verifyAssertionForExisting(\n          /** @type {!fireauth.RpcHandler.VerifyAssertionData} */ (request)),\n      uid);\n};\n\n\n/**\n * @return {!Object} A request to the VerifyAssertion endpoint, populated with\n *     the OAuth data from this credential.\n * @private\n */\nfireauth.OAuthCredential.prototype.makeVerifyAssertionRequest_ = function() {\n  var postBody = {};\n  if (this['idToken']) {\n    postBody['id_token'] = this['idToken'];\n  }\n  if (this['accessToken']) {\n    postBody['access_token'] = this['accessToken'];\n  }\n  if (this['secret']) {\n    postBody['oauth_token_secret'] = this['secret'];\n  }\n  postBody['providerId'] = this['providerId'];\n  // Pass nonce in postBody if available.\n  if (this['nonce'] && !this.pendingToken_) {\n    postBody['nonce'] = this['nonce'];\n  }\n  var request = {\n    'postBody': goog.Uri.QueryData.createFromMap(postBody).toString(),\n    // Always use http://localhost.\n    'requestUri': 'http://localhost'\n  };\n  if (this.pendingToken_) {\n    // For pendingToken, just pass it through and drop postBody.\n    delete request['postBody'];\n    request['pendingToken'] = this.pendingToken_;\n  }\n  return request;\n};\n\n\n/**\n * @return {!Object} The plain object representation of an Auth credential.\n * @override\n */\nfireauth.OAuthCredential.prototype.toPlainObject = function() {\n  var obj = {\n    'providerId': this['providerId'],\n    'signInMethod': this['signInMethod']\n  };\n  if (this['idToken']) {\n    obj['oauthIdToken'] = this['idToken'];\n  }\n  if (this['accessToken']) {\n    obj['oauthAccessToken'] = this['accessToken'];\n  }\n  if (this['secret']) {\n    obj['oauthTokenSecret'] = this['secret'];\n  }\n  if (this['nonce']) {\n    obj['nonce'] = this['nonce'];\n  }\n  if (this.pendingToken_) {\n    obj['pendingToken'] = this.pendingToken_;\n  }\n  return obj;\n};\n\n\n/**\n * @param {?Object|undefined} json The plain object representation of an\n *     OAuthCredential.\n * @return {?fireauth.OAuthCredential} The OAuth/OIDC credential if the object\n *     is a JSON representation of an OAuthCredential, null otherwise.\n */\nfireauth.OAuthCredential.fromJSON = function(json) {\n  if (json &&\n      json['providerId'] &&\n      json['signInMethod']) {\n    // Convert to OAuthResponse format.\n    var oauthResponse = {\n      // OIDC && google.com.\n      'idToken': json['oauthIdToken'],\n      // OAuth 2.0 providers.\n      'accessToken': json['oauthTokenSecret'] ? null : json['oauthAccessToken'],\n      // OAuth 1.0 provider, eg. Twitter.\n      'oauthTokenSecret': json['oauthTokenSecret'],\n      'oauthToken': json['oauthTokenSecret'] && json['oauthAccessToken'],\n      'nonce': json['nonce'],\n      'pendingToken': json['pendingToken']\n    };\n    try {\n      // Constructor will validate the OAuthResponse.\n      return new fireauth.OAuthCredential(\n          json['providerId'], oauthResponse, json['signInMethod']);\n    } catch (e) {\n      return null;\n    }\n  }\n  return null;\n};\n\n\n/**\n * A generic OAuth provider (OAuth1 or OAuth2).\n * @param {string} providerId The IdP provider ID (e.g. google.com,\n *     facebook.com) registered with the backend.\n * @param {?Array<string>=} opt_reservedParams The backlist of parameters that\n *     cannot be set through setCustomParameters.\n * @constructor\n */\nfireauth.FederatedProvider = function(providerId, opt_reservedParams) {\n  /** @private {!Array<string>} */\n  this.reservedParams_ = opt_reservedParams || [];\n\n  // Set read only instance providerId property.\n  // Set read only instance isOAuthProvider property.\n  fireauth.object.setReadonlyProperties(this, {\n    'providerId': providerId,\n    'isOAuthProvider': true\n  });\n\n  /** @private {!Object} The OAuth custom parameters for current provider. */\n  this.customParameters_ = {};\n  /** @protected {?string} The custom OAuth language parameter. */\n  this.languageParameter =\n      (fireauth.idp.getIdpSettings(/** @type {!fireauth.idp.ProviderId} */ (\n          providerId)) || {}).languageParam || null;\n  /** @protected {?string} The default language. */\n  this.defaultLanguageCode = null;\n};\n\n/**\n * @param {!Object} customParameters The custom OAuth parameters to pass\n *     in OAuth request.\n * @return {!fireauth.FederatedProvider} The FederatedProvider instance, for\n *     chaining method calls.\n */\nfireauth.FederatedProvider.prototype.setCustomParameters =\n    function(customParameters) {\n  this.customParameters_ = goog.object.clone(customParameters);\n  return this;\n};\n\n\n/**\n * Set the default language code on the provider instance.\n * @param {?string} languageCode The default language code to set if not already\n *     provided in the custom parameters.\n */\nfireauth.FederatedProvider.prototype.setDefaultLanguage =\n    function(languageCode) {\n  this.defaultLanguageCode = languageCode;\n};\n\n\n/**\n * @return {!Object} The custom OAuth parameters to pass in OAuth request.\n */\nfireauth.FederatedProvider.prototype.getCustomParameters = function() {\n  // The backend already checks for these values and makes sure no reserved\n  // fields like client ID, redirect URI, state are overwritten by these\n  // fields.\n  var params =\n      fireauth.util.copyWithoutNullsOrUndefined(this.customParameters_);\n  // Convert to strings.\n  for (var key in params) {\n    params[key] = params[key].toString();\n  }\n  // Remove blacklisted OAuth custom parameters.\n  var customParams =\n      fireauth.util.removeEntriesWithKeys(params, this.reservedParams_);\n  // If language param supported and not already provided, use default language.\n  if (this.languageParameter &&\n      this.defaultLanguageCode &&\n      !customParams[this.languageParameter]) {\n    customParams[this.languageParameter] = this.defaultLanguageCode;\n  }\n  return customParams;\n};\n\n\n/**\n * Generic SAML auth provider.\n * @param {string} providerId The SAML IdP provider ID (e.g. saml.saml2rp)\n *     registered with the backend.\n * @constructor\n * @extends {fireauth.FederatedProvider}\n * @implements {fireauth.AuthProvider}\n */\nfireauth.SAMLAuthProvider = function(providerId) {\n  // SAML provider IDs must be prefixed with the SAML_PREFIX.\n  if (!fireauth.idp.isSaml(providerId)) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.ARGUMENT_ERROR,\n        'SAML provider IDs must be prefixed with \"' +\n        fireauth.constants.SAML_PREFIX + '\"');\n  }\n  // isOAuthProvider is true even though this is not an OAuth provider.\n  // This can be confusing as this is a SAML provider. However, this property\n  // is needed to allow signInWithPopup/Redirect. We should rename it to\n  // something more accurate: isFederatedProvider.\n  fireauth.SAMLAuthProvider.base(this, 'constructor', providerId, []);\n};\ngoog.inherits(fireauth.SAMLAuthProvider, fireauth.FederatedProvider);\n\n\n/**\n * Generic OAuth2 Auth provider.\n * @param {string} providerId The IdP provider ID (e.g. google.com,\n *     facebook.com) registered with the backend.\n * @constructor\n * @extends {fireauth.FederatedProvider}\n * @implements {fireauth.AuthProvider}\n */\nfireauth.OAuthProvider = function(providerId) {\n  fireauth.OAuthProvider.base(this, 'constructor', providerId,\n      fireauth.idp.RESERVED_OAUTH2_PARAMS);\n\n  /** @private {!Array<string>} The list of OAuth2 scopes to request. */\n  this.scopes_ = [];\n};\ngoog.inherits(fireauth.OAuthProvider, fireauth.FederatedProvider);\n\n\n/**\n * @param {string} scope The OAuth scope to request.\n * @return {!fireauth.OAuthProvider} The OAuthProvider instance, for chaining\n *     method calls.\n */\nfireauth.OAuthProvider.prototype.addScope = function(scope) {\n  // If not already added, add scope to list.\n  if (!goog.array.contains(this.scopes_, scope)) {\n    this.scopes_.push(scope);\n  }\n  return this;\n};\n\n\n/** @return {!Array<string>} The Auth provider's list of scopes. */\nfireauth.OAuthProvider.prototype.getScopes = function() {\n  return goog.array.clone(this.scopes_);\n};\n\n\n/**\n * Initializes an OAuth AuthCredential. At least one of ID token or access token\n * must be defined. When providing an OIDC ID token with a nonce encoded, the\n * raw nonce must also be provided.\n * @param {?Object|string} optionsOrIdToken Either the options object containing\n *     the ID token, access token and raw nonce or the ID token string.\n * @param {?string=} opt_accessToken The optional OAuth access token.\n * @return {!fireauth.AuthCredential} The Auth credential object.\n */\nfireauth.OAuthProvider.prototype.credential =\n    function(optionsOrIdToken, opt_accessToken) {\n  var oauthResponse;\n  if (goog.isObject(optionsOrIdToken)) {\n    oauthResponse = {\n      'idToken': optionsOrIdToken['idToken'] || null,\n      'accessToken': optionsOrIdToken['accessToken'] || null,\n      'nonce': optionsOrIdToken['rawNonce'] || null\n    };\n  } else {\n    oauthResponse = {\n      'idToken': optionsOrIdToken || null,\n      'accessToken': opt_accessToken || null\n    };\n  }\n  if (!oauthResponse['idToken'] && !oauthResponse['accessToken']) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.ARGUMENT_ERROR,\n        'credential failed: must provide the ID token and/or the access ' +\n        'token.');\n  }\n  // For OAuthCredential, sign in method is same as providerId.\n  return new fireauth.OAuthCredential(this['providerId'],\n                                      oauthResponse,\n                                      this['providerId']);\n};\n\n\n/**\n * Facebook Auth provider.\n * @constructor\n * @extends {fireauth.OAuthProvider}\n * @implements {fireauth.AuthProvider}\n */\nfireauth.FacebookAuthProvider = function() {\n  fireauth.FacebookAuthProvider.base(this, 'constructor',\n      fireauth.idp.ProviderId.FACEBOOK);\n};\ngoog.inherits(fireauth.FacebookAuthProvider, fireauth.OAuthProvider);\n\nfireauth.object.setReadonlyProperty(fireauth.FacebookAuthProvider,\n    'PROVIDER_ID', fireauth.idp.ProviderId.FACEBOOK);\n\nfireauth.object.setReadonlyProperty(fireauth.FacebookAuthProvider,\n    'FACEBOOK_SIGN_IN_METHOD', fireauth.idp.SignInMethod.FACEBOOK);\n\n\n/**\n * Initializes a Facebook AuthCredential.\n * @param {string} accessTokenOrObject The Facebook access token, or object\n *     containing the token for FirebaseUI backwards compatibility.\n * @return {!fireauth.AuthCredential} The Auth credential object.\n */\nfireauth.FacebookAuthProvider.credential = function(accessTokenOrObject) {\n  if (!accessTokenOrObject) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.ARGUMENT_ERROR,\n        'credential failed: expected 1 argument (the OAuth access token).');\n  }\n  var accessToken = accessTokenOrObject;\n  if (goog.isObject(accessTokenOrObject)) {\n    accessToken = accessTokenOrObject['accessToken'];\n  }\n  return new fireauth.FacebookAuthProvider().credential({\n    'accessToken': /** @type {string} */ (accessToken)\n  });\n};\n\n\n/**\n * GitHub Auth provider.\n * @constructor\n * @extends {fireauth.OAuthProvider}\n * @implements {fireauth.AuthProvider}\n */\nfireauth.GithubAuthProvider = function() {\n  fireauth.GithubAuthProvider.base(this, 'constructor',\n      fireauth.idp.ProviderId.GITHUB);\n};\ngoog.inherits(fireauth.GithubAuthProvider, fireauth.OAuthProvider);\n\nfireauth.object.setReadonlyProperty(fireauth.GithubAuthProvider,\n    'PROVIDER_ID', fireauth.idp.ProviderId.GITHUB);\n\nfireauth.object.setReadonlyProperty(fireauth.GithubAuthProvider,\n    'GITHUB_SIGN_IN_METHOD', fireauth.idp.SignInMethod.GITHUB);\n\n\n/**\n * Initializes a GitHub AuthCredential.\n * @param {string} accessTokenOrObject The GitHub access token, or object\n *     containing the token for FirebaseUI backwards compatibility.\n * @return {!fireauth.AuthCredential} The Auth credential object.\n */\nfireauth.GithubAuthProvider.credential = function(accessTokenOrObject) {\n  if (!accessTokenOrObject) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.ARGUMENT_ERROR,\n        'credential failed: expected 1 argument (the OAuth access token).');\n  }\n  var accessToken = accessTokenOrObject;\n  if (goog.isObject(accessTokenOrObject)) {\n    accessToken = accessTokenOrObject['accessToken'];\n  }\n  return new fireauth.GithubAuthProvider().credential({\n    'accessToken': /** @type {string} */ (accessToken)\n  });\n};\n\n\n/**\n * Google Auth provider.\n * @constructor\n * @extends {fireauth.OAuthProvider}\n * @implements {fireauth.AuthProvider}\n */\nfireauth.GoogleAuthProvider = function() {\n  fireauth.GoogleAuthProvider.base(this, 'constructor',\n      fireauth.idp.ProviderId.GOOGLE);\n\n  // Add profile scope to Google Auth provider as default scope.\n  // This is to ensure profile info is populated in current user.\n  this.addScope('profile');\n};\ngoog.inherits(fireauth.GoogleAuthProvider, fireauth.OAuthProvider);\n\nfireauth.object.setReadonlyProperty(fireauth.GoogleAuthProvider,\n    'PROVIDER_ID', fireauth.idp.ProviderId.GOOGLE);\n\nfireauth.object.setReadonlyProperty(fireauth.GoogleAuthProvider,\n    'GOOGLE_SIGN_IN_METHOD', fireauth.idp.SignInMethod.GOOGLE);\n\n\n/**\n * Initializes a Google AuthCredential.\n * @param {?string=} idTokenOrObject The Google ID token. If null or undefined,\n *     we expect the access token to be passed. It can also be an object\n *     containing the tokens for FirebaseUI backwards compatibility.\n * @param {?string=} accessToken The Google access token. If null or\n *     undefined, we expect the ID token to have been passed.\n * @return {!fireauth.AuthCredential} The Auth credential object.\n */\nfireauth.GoogleAuthProvider.credential =\n    function(idTokenOrObject, accessToken) {\n  var idToken = idTokenOrObject;\n  if (goog.isObject(idTokenOrObject)) {\n    idToken = idTokenOrObject['idToken'];\n    accessToken = idTokenOrObject['accessToken'];\n  }\n  return new fireauth.GoogleAuthProvider().credential({\n    'idToken':  /** @type {string} */ (idToken),\n    'accessToken': /** @type {string} */ (accessToken)\n  });\n};\n\n\n/**\n * Twitter Auth provider.\n * @constructor\n * @extends {fireauth.FederatedProvider}\n * @implements {fireauth.AuthProvider}\n */\nfireauth.TwitterAuthProvider = function() {\n  fireauth.TwitterAuthProvider.base(this, 'constructor',\n      fireauth.idp.ProviderId.TWITTER,\n      fireauth.idp.RESERVED_OAUTH1_PARAMS);\n};\ngoog.inherits(fireauth.TwitterAuthProvider, fireauth.FederatedProvider);\n\nfireauth.object.setReadonlyProperty(fireauth.TwitterAuthProvider,\n    'PROVIDER_ID', fireauth.idp.ProviderId.TWITTER);\n\nfireauth.object.setReadonlyProperty(fireauth.TwitterAuthProvider,\n    'TWITTER_SIGN_IN_METHOD', fireauth.idp.SignInMethod.TWITTER);\n\n\n/**\n * Initializes a Twitter AuthCredential.\n * @param {string} tokenOrObject The Twitter access token, or object\n *     containing the token for FirebaseUI backwards compatibility.\n * @param {string} secret The Twitter secret.\n * @return {!fireauth.AuthCredential} The Auth credential object.\n */\nfireauth.TwitterAuthProvider.credential = function(tokenOrObject, secret) {\n  var tokenObject = tokenOrObject;\n  if (!goog.isObject(tokenObject)) {\n    tokenObject = {\n      'oauthToken': tokenOrObject,\n      'oauthTokenSecret': secret\n    };\n  }\n\n  if (!tokenObject['oauthToken'] || !tokenObject['oauthTokenSecret']) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.ARGUMENT_ERROR,\n        'credential failed: expected 2 arguments (the OAuth access token ' +\n        'and secret).');\n  }\n\n  return new fireauth.OAuthCredential(fireauth.idp.ProviderId.TWITTER,\n      /** @type {!fireauth.OAuthResponse} */ (tokenObject),\n      fireauth.idp.SignInMethod.TWITTER);\n};\n\n\n/**\n * The email and password credential class.\n * @param {string} email The credential email.\n * @param {string} password The credential password.\n * @param {string=} opt_signInMethod The credential sign in method can be either\n *     'password' or 'emailLink'\n * @constructor\n * @implements {fireauth.AuthCredential}\n */\nfireauth.EmailAuthCredential = function(email, password, opt_signInMethod) {\n  this.email_ = email;\n  this.password_ = password;\n  fireauth.object.setReadonlyProperty(this, 'providerId',\n      fireauth.idp.ProviderId.PASSWORD);\n  var signInMethod = opt_signInMethod ===\n      fireauth.EmailAuthProvider['EMAIL_LINK_SIGN_IN_METHOD'] ?\n      fireauth.EmailAuthProvider['EMAIL_LINK_SIGN_IN_METHOD'] :\n      fireauth.EmailAuthProvider['EMAIL_PASSWORD_SIGN_IN_METHOD'];\n  fireauth.object.setReadonlyProperty(this, 'signInMethod', signInMethod);\n};\n\n\n/**\n * Returns a promise to retrieve ID token using the underlying RPC handler API\n * for the current credential.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler.\n * @return {!goog.Promise<!Object, !fireauth.AuthError>}\n *     idTokenPromise The RPC handler method that returns a promise which\n *     resolves with an ID token.\n * @override\n */\nfireauth.EmailAuthCredential.prototype.getIdTokenProvider =\n    function(rpcHandler) {\n  if (this['signInMethod'] ==\n      fireauth.EmailAuthProvider['EMAIL_LINK_SIGN_IN_METHOD']) {\n    return rpcHandler.emailLinkSignIn(this.email_, this.password_);\n  }\n  return rpcHandler.verifyPassword(this.email_, this.password_);\n};\n\n\n/**\n * Adds an email and password account to an existing account, identified by an\n * ID token.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler.\n * @param {string} idToken The ID token of the existing account.\n * @return {!goog.Promise<!Object>} A Promise that resolves when the accounts\n *     are linked, returning the backend response.\n * @override\n */\nfireauth.EmailAuthCredential.prototype.linkToIdToken =\n    function(rpcHandler, idToken) {\n  if (this['signInMethod'] ==\n      fireauth.EmailAuthProvider['EMAIL_LINK_SIGN_IN_METHOD']) {\n    return rpcHandler.emailLinkSignInForLinking(\n        idToken, this.email_, this.password_);\n  }\n  return rpcHandler.updateEmailAndPassword(\n      idToken, this.email_, this.password_);\n};\n\n\n/**\n * Tries to match the credential's idToken with the provided UID.\n * @param {!fireauth.RpcHandler} rpcHandler The rpc handler.\n * @param {string} uid The UID of the user to reauthenticate.\n * @return {!goog.Promise<!Object>} A Promise that resolves when\n *     reauthentication succeeds.\n * @override\n */\nfireauth.EmailAuthCredential.prototype.matchIdTokenWithUid =\n    function(rpcHandler, uid) {\n  // Do not create a new account if the user doesn't exist.\n  return fireauth.AuthCredential.verifyTokenResponseUid(\n      // This shouldn't create a new email/password account.\n      this.getIdTokenProvider(rpcHandler),\n      uid);\n};\n\n\n/**\n * @return {!Object} The plain object representation of an Auth credential.\n * @override\n */\nfireauth.EmailAuthCredential.prototype.toPlainObject = function() {\n  return {\n    'email': this.email_,\n    'password': this.password_,\n    'signInMethod': this['signInMethod']\n  };\n};\n\n\n/**\n * @param {?Object|undefined} json The plain object representation of a\n *     EmailAuthCredential.\n * @return {?fireauth.EmailAuthCredential} The email credential if the object\n *     is a JSON representation of an EmailAuthCredential, null otherwise.\n */\nfireauth.EmailAuthCredential.fromJSON = function(json) {\n  if (json && json['email'] && json['password']) {\n    return new fireauth.EmailAuthCredential(\n        json['email'],\n        json['password'],\n        json['signInMethod']);\n  }\n  return null;\n};\n\n\n/**\n * Email password Auth provider implementation.\n * @constructor\n * @implements {fireauth.AuthProvider}\n */\nfireauth.EmailAuthProvider = function() {\n  // Set read-only instance providerId and isOAuthProvider property.\n  fireauth.object.setReadonlyProperties(this, {\n    'providerId': fireauth.idp.ProviderId.PASSWORD,\n    'isOAuthProvider': false\n  });\n};\n\n\n/**\n * Initializes an instance of an email/password Auth credential.\n * @param {string} email The credential email.\n * @param {string} password The credential password.\n * @return {!fireauth.EmailAuthCredential} The Auth credential object.\n */\nfireauth.EmailAuthProvider.credential = function(email, password) {\n  return new fireauth.EmailAuthCredential(email, password);\n};\n\n\n/**\n * @param {string} email The credential email.\n * @param {string} emailLink The credential email link.\n * @return {!fireauth.EmailAuthCredential} The Auth credential object.\n */\nfireauth.EmailAuthProvider.credentialWithLink = function(email, emailLink) {\n  var actionCodeUrl = fireauth.EmailAuthProvider\n      .getActionCodeUrlFromSignInEmailLink(emailLink);\n  if (!actionCodeUrl) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.ARGUMENT_ERROR, 'Invalid email link!');\n  }\n  return new fireauth.EmailAuthCredential(email, actionCodeUrl['code'],\n      fireauth.EmailAuthProvider['EMAIL_LINK_SIGN_IN_METHOD']);\n};\n\n\n/**\n * @param {string} emailLink The sign in email link to be validated.\n * @return {?fireauth.ActionCodeURL} The sign in email link action code URL.\n *     Returns null if the email link is invalid.\n */\nfireauth.EmailAuthProvider.getActionCodeUrlFromSignInEmailLink =\n    function(emailLink) {\n  emailLink = fireauth.DynamicLink.parseDeepLink(emailLink);\n  var actionCodeUrl = fireauth.ActionCodeURL.parseLink(emailLink);\n  if (actionCodeUrl && (actionCodeUrl['operation'] ===\n      fireauth.ActionCodeInfo.Operation.EMAIL_SIGNIN)) {\n    return actionCodeUrl;\n  }\n  return null;\n};\n\n\n// Set read only PROVIDER_ID property.\nfireauth.object.setReadonlyProperties(fireauth.EmailAuthProvider, {\n  'PROVIDER_ID': fireauth.idp.ProviderId.PASSWORD\n});\n\n// Set read only EMAIL_LINK_SIGN_IN_METHOD property.\nfireauth.object.setReadonlyProperties(fireauth.EmailAuthProvider, {\n  'EMAIL_LINK_SIGN_IN_METHOD': fireauth.idp.SignInMethod.EMAIL_LINK\n});\n\n// Set read only EMAIL_PASSWORD_SIGN_IN_METHOD property.\nfireauth.object.setReadonlyProperties(fireauth.EmailAuthProvider, {\n  'EMAIL_PASSWORD_SIGN_IN_METHOD': fireauth.idp.SignInMethod.EMAIL_PASSWORD\n});\n\n\n/**\n * A credential for phone number sign-in. Phone credentials can also be used as\n * second factor assertions.\n * A `PhoneAuthCredential` is also a `MultiFactorAuthCredential`. A\n * `PhoneMultiFactorAssertion` requires a `PhoneAuthCredential`.\n * @param {!fireauth.PhoneAuthCredential.Parameters_} params The credential\n *     parameters that prove the user owns the claimed phone number.\n * @constructor\n * @implements {fireauth.MultiFactorAuthCredential}\n */\nfireauth.PhoneAuthCredential = function(params) {\n  // Either verification ID and code, or phone number temporary proof must be\n  // provided.\n  if (!(params.verificationId && params.verificationCode) &&\n      !(params.temporaryProof && params.phoneNumber)) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n\n  /**\n   * The phone Auth parameters that prove ownership of a phone number, either\n   * through completion of a phone verification flow, or by referencing a\n   * previously completed verification flow (\"temporaryProof\").\n   * @private {!fireauth.PhoneAuthCredential.Parameters_}\n   */\n  this.params_ = params;\n\n  fireauth.object.setReadonlyProperty(this, 'providerId',\n      fireauth.idp.ProviderId.PHONE);\n  /**\n   * @public {string} The provider ID required by the\n   *     `fireauth.MultiFactorAuthCredential` interface.\n   */\n  this.providerId = fireauth.idp.ProviderId.PHONE;\n\n  fireauth.object.setReadonlyProperty(\n      this, 'signInMethod', fireauth.idp.SignInMethod.PHONE);\n};\n\n\n/**\n * Parameters that prove ownership of a phone number via a ID \"verificationId\"\n * of a request to send a code to the phone number, with the code\n * \"verificationCode\" that the user received on their phone.\n * @private\n * @typedef {{\n *   verificationId: string,\n *   verificationCode: string\n * }}\n */\nfireauth.PhoneAuthCredential.VerificationParameters_;\n\n\n/**\n * Parameters that prove ownership of a phone number by referencing a previously\n * completed phone Auth flow.\n * @private\n * @typedef {{\n *   temporaryProof: string,\n *   phoneNumber: string\n * }}\n */\nfireauth.PhoneAuthCredential.TemporaryProofParameters_;\n\n\n/**\n * @private\n * @typedef {\n *   !fireauth.PhoneAuthCredential.VerificationParameters_|\n *   !fireauth.PhoneAuthCredential.TemporaryProofParameters_\n * }\n */\nfireauth.PhoneAuthCredential.Parameters_;\n\n\n/**\n * Retrieves an ID token from the backend given the current credential.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler.\n * @return {!goog.Promise<!Object>} A Promise that resolves with the\n *     backend response.\n * @override\n */\nfireauth.PhoneAuthCredential.prototype.getIdTokenProvider =\n    function(rpcHandler) {\n  return rpcHandler.verifyPhoneNumber(this.makeVerifyPhoneNumberRequest_());\n};\n\n\n/**\n * Adds a phone credential to an existing account identified by an ID token.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler.\n * @param {string} idToken The ID token of the existing account.\n * @return {!goog.Promise<!Object>} A Promise that resolves when the accounts\n *     are linked, returning the backend response.\n * @override\n */\nfireauth.PhoneAuthCredential.prototype.linkToIdToken =\n    function(rpcHandler, idToken) {\n  var request = this.makeVerifyPhoneNumberRequest_();\n  request['idToken'] = idToken;\n  return rpcHandler.verifyPhoneNumberForLinking(request);\n};\n\n\n/**\n * Tries to match the credential's idToken with the provided UID.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler.\n * @param {string} uid The UID of the user to reauthenticate.\n * @return {!goog.Promise<!Object>} A Promise that resolves when\n *     reauthentication succeeds.\n * @override\n */\nfireauth.PhoneAuthCredential.prototype.matchIdTokenWithUid =\n    function(rpcHandler, uid) {\n  var request = this.makeVerifyPhoneNumberRequest_();\n  return fireauth.AuthCredential.verifyTokenResponseUid(\n      rpcHandler.verifyPhoneNumberForExisting(request),\n      uid);\n};\n\n\n/**\n * Converts a PhoneAuthCredential to a plain object.\n * @return {!Object}\n * @override\n */\nfireauth.PhoneAuthCredential.prototype.toPlainObject = function() {\n  var obj =  {\n    'providerId': fireauth.idp.ProviderId.PHONE\n  };\n  if (this.params_.verificationId) {\n    obj['verificationId'] = this.params_.verificationId;\n  }\n  if (this.params_.verificationCode) {\n    obj['verificationCode'] = this.params_.verificationCode;\n  }\n  if (this.params_.temporaryProof) {\n    obj['temporaryProof'] = this.params_.temporaryProof;\n  }\n  if (this.params_.phoneNumber) {\n    obj['phoneNumber'] = this.params_.phoneNumber;\n  }\n  return obj;\n};\n\n\n/**\n * @param {?Object|undefined} json The plain object representation of a\n *     PhoneAuthCredential.\n * @return {?fireauth.PhoneAuthCredential} The phone credential if the object\n *     is a JSON representation of an PhoneAuthCredential, null otherwise.\n */\nfireauth.PhoneAuthCredential.fromJSON = function(json) {\n  if (json &&\n      json['providerId'] === fireauth.idp.ProviderId.PHONE &&\n      ((json['verificationId'] && json['verificationCode']) ||\n       (json['temporaryProof'] && json['phoneNumber']))) {\n    var params = {};\n    var allowedKeys = [\n      'verificationId', 'verificationCode', 'temporaryProof', 'phoneNumber'\n    ];\n    goog.array.forEach(allowedKeys, function(key) {\n      if (json[key]) {\n        params[key] = json[key];\n      }\n    });\n    return new fireauth.PhoneAuthCredential(\n        /** @type {!fireauth.PhoneAuthCredential.Parameters_} */ (params));\n  }\n  return null;\n};\n\n\n/**\n * @return {!Object} A request to the verifyPhoneNumber endpoint based on the\n *     current state of the object.\n * @private\n */\nfireauth.PhoneAuthCredential.prototype.makeVerifyPhoneNumberRequest_ =\n    function() {\n  if (this.params_.temporaryProof && this.params_.phoneNumber) {\n    return {\n      'temporaryProof': this.params_.temporaryProof,\n      'phoneNumber': this.params_.phoneNumber\n    };\n  }\n\n  return {\n    'sessionInfo': this.params_.verificationId,\n    'code': this.params_.verificationCode\n  };\n};\n\n\n/**\n * Finalizes the 2nd factor enrollment flow with the current AuthCredential\n * using the enrollment request identifier.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler instance.\n * @param {!fireauth.MultiFactorEnrollmentRequestIdentifier} enrollmentRequest\n *     The enrollment request identifying the user.\n * @return {!goog.Promise<{idToken: string, refreshToken: string}>} A promise\n *     that resolves with the updated ID and refresh tokens.\n * @override\n */\nfireauth.PhoneAuthCredential.prototype.finalizeMfaEnrollment =\n    function(rpcHandler, enrollmentRequest) {\n  goog.object.extend(\n      enrollmentRequest,\n      {\n        'phoneVerificationInfo': this.makeVerifyPhoneNumberRequest_()\n      });\n  return /** @type {!goog.Promise<{idToken: string, refreshToken: string}>} */ (\n      rpcHandler.finalizePhoneMfaEnrollment(enrollmentRequest));\n};\n\n\n/**\n * Finalizes the 2nd factor sign-in flow with the current AuthCredential\n * using the sign-in request identifier.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler instance.\n * @param {!fireauth.MultiFactorSignInRequestIdentifier} signInRequest\n *     The sign-in request identifying the user.\n * @return {!goog.Promise<{idToken: string, refreshToken: string}>} A promise\n *     that resolves with the signed in user's ID and refresh tokens.\n * @override\n */\nfireauth.PhoneAuthCredential.prototype.finalizeMfaSignIn =\n    function(rpcHandler, signInRequest) {\n  goog.object.extend(\n      signInRequest,\n      {\n        'phoneVerificationInfo': this.makeVerifyPhoneNumberRequest_()\n      });\n  return /** @type {!goog.Promise<{idToken: string, refreshToken: string}>} */ (\n      rpcHandler.finalizePhoneMfaSignIn(signInRequest));\n};\n\n\n/**\n * Phone Auth provider implementation.\n * @param {?fireauth.Auth=} opt_auth The Firebase Auth instance.\n * @constructor\n * @implements {fireauth.AuthProvider}\n */\nfireauth.PhoneAuthProvider = function(opt_auth) {\n  try {\n    /** @private {!fireauth.Auth} */\n    this.auth_ = opt_auth || firebase['auth']();\n  } catch (e) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.ARGUMENT_ERROR,\n        'Either an instance of firebase.auth.Auth must be passed as an ' +\n        'argument to the firebase.auth.PhoneAuthProvider constructor, or the ' +\n        'default firebase App instance must be initialized via ' +\n        'firebase.initializeApp().');\n  }\n  fireauth.object.setReadonlyProperties(this, {\n    'providerId': fireauth.idp.ProviderId.PHONE,\n    'isOAuthProvider': false\n  });\n};\n\n\n/**\n * The phone info options for single-factor sign-in. Only phone number is\n * required.\n * @private\n * @typedef {{\n *   phoneNumber: string\n * }}\n */\nfireauth.PhoneAuthProvider.PhoneSingleFactorInfoOptions_;\n\n/**\n * The phone info options for multi-factor enrollment. Phone number and\n * multi-factor session are required.\n * @private\n * @typedef {{\n *   phoneNumber: string,\n *   session: !fireauth.MultiFactorSession\n * }}\n */\nfireauth.PhoneAuthProvider.PhoneMultiFactorEnrollInfoOptions_;\n\n\n/**\n * The phone info options for multi-factor sign-in. Either multi-factor hint or\n * multi-factor UID and multi-factor session are required.\n * @private\n * @typedef {{\n *   multiFactorHint: !fireauth.MultiFactorInfo,\n *   session: !fireauth.MultiFactorSession\n * }|{\n *   multiFactorUid: string,\n *   session: !fireauth.MultiFactorSession\n * }}\n */\nfireauth.PhoneAuthProvider.PhoneMultiFactorSignInInfoOptions_;\n\n\n/**\n * The options for verifying the ownership of the phone number. It could be\n * used for single-factor sign-in, multi-factor enrollment or multi-factor\n * sign-in.\n * @typedef {\n *   !fireauth.PhoneAuthProvider.PhoneSingleFactorInfoOptions_|\n *   !fireauth.PhoneAuthProvider.PhoneMultiFactorEnrollInfoOptions_|\n *   !fireauth.PhoneAuthProvider.PhoneMultiFactorSignInInfoOptions_\n * }\n */\nfireauth.PhoneAuthProvider.PhoneInfoOptions;\n\n\n/**\n * Initiates a phone number confirmation flow. If session is provided, it is\n * used to verify ownership of the second factor phone number.\n *\n * @param {string|!fireauth.PhoneAuthProvider.PhoneInfoOptions} phoneInfoOptions\n *     The user's phone options for verifying the ownship of the phone number.\n * @param {!firebase.auth.ApplicationVerifier} applicationVerifier The\n *     application verifier for anti-abuse purposes.\n * @return {!goog.Promise<string>} A Promise that resolves with the\n *     verificationId of the phone number confirmation flow.\n */\nfireauth.PhoneAuthProvider.prototype.verifyPhoneNumber =\n    function(phoneInfoOptions, applicationVerifier) {\n  var rpcHandler = this.auth_.getRpcHandler();\n\n  // Convert the promise into a goog.Promise. If the applicationVerifier throws\n  // an error, just propagate it to the client. Reset the reCAPTCHA widget every\n  // time after sending the token to the server.\n  return goog.Promise.resolve(applicationVerifier['verify']())\n      .then(function(assertion) {\n        if (typeof assertion !== 'string') {\n          throw new fireauth.AuthError(fireauth.authenum.Error.ARGUMENT_ERROR,\n              'An implementation of firebase.auth.ApplicationVerifier' +\n              '.prototype.verify() must return a firebase.Promise ' +\n              'that resolves with a string.');\n        }\n\n        switch (applicationVerifier['type']) {\n          case 'recaptcha':\n            var session = goog.isObject(phoneInfoOptions) ?\n                phoneInfoOptions['session'] : null;\n            // PhoneInfoOptions can be a phone number string for backward\n            // compatibility.\n            var phoneNumber = goog.isObject(phoneInfoOptions) ?\n                phoneInfoOptions['phoneNumber'] : phoneInfoOptions;\n            var verifyPromise;\n            if (session &&\n                session.type == fireauth.MultiFactorSession.Type.ENROLL) {\n              verifyPromise = session.getRawSession()\n                  .then(function(rawSession) {\n                    return rpcHandler.startPhoneMfaEnrollment({\n                      'idToken': rawSession,\n                      'phoneEnrollmentInfo': {\n                        'phoneNumber': phoneNumber,\n                        'recaptchaToken': assertion\n                      }\n                    });\n                  });\n            } else if (session &&\n                       session.type ==\n                           fireauth.MultiFactorSession.Type.SIGN_IN) {\n              verifyPromise = session.getRawSession()\n                  .then(function(rawSession) {\n                    var mfaEnrollmentId =\n                        (phoneInfoOptions['multiFactorHint'] &&\n                         phoneInfoOptions['multiFactorHint']['uid']) ||\n                        phoneInfoOptions['multiFactorUid'];\n                    return rpcHandler.startPhoneMfaSignIn({\n                      'mfaPendingCredential': rawSession,\n                      'mfaEnrollmentId': mfaEnrollmentId,\n                      'phoneSignInInfo': {\n                        'recaptchaToken': assertion\n                      }\n                    });\n                  });\n            } else {\n              verifyPromise = rpcHandler.sendVerificationCode({\n                'phoneNumber': phoneNumber,\n                'recaptchaToken': assertion\n              });\n            }\n            // Reset the applicationVerifier after code is sent.\n            return verifyPromise.then(function(verificationId) {\n              if (typeof applicationVerifier.reset === 'function') {\n                applicationVerifier.reset();\n              }\n              return verificationId;\n            }, function(error) {\n              if (typeof applicationVerifier.reset === 'function') {\n                applicationVerifier.reset();\n              }\n              throw error;\n            });\n          default:\n            throw new fireauth.AuthError(fireauth.authenum.Error.ARGUMENT_ERROR,\n                'Only firebase.auth.ApplicationVerifiers with ' +\n                'type=\"recaptcha\" are currently supported.');\n        }\n      });\n};\n\n\n/**\n * Creates a PhoneAuthCredential.\n * @param {string} verificationId The ID of the phone number flow, to correlate\n *     this request with a previous call to\n *     PhoneAuthProvider.prototype.verifyPhoneNumber.\n * @param {string} verificationCode The verification code that was sent to the\n *     user's phone.\n * @return {!fireauth.PhoneAuthCredential}\n */\nfireauth.PhoneAuthProvider.credential =\n    function(verificationId, verificationCode) {\n  if (!verificationId) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.MISSING_SESSION_INFO);\n  }\n  if (!verificationCode) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.MISSING_CODE);\n  }\n  return new fireauth.PhoneAuthCredential({\n    verificationId: verificationId,\n    verificationCode: verificationCode\n  });\n};\n\n\n// Set read only PROVIDER_ID property.\nfireauth.object.setReadonlyProperties(fireauth.PhoneAuthProvider, {\n  'PROVIDER_ID': fireauth.idp.ProviderId.PHONE\n});\n\n\n// Set read only PHONE_SIGN_IN_METHOD property.\nfireauth.object.setReadonlyProperties(fireauth.PhoneAuthProvider, {\n  'PHONE_SIGN_IN_METHOD': fireauth.idp.SignInMethod.PHONE\n});\n\n\n/**\n * Constructs an Auth credential from a backend response.\n * Note, unlike fromJSON which constructs the AuthCredential from a toJSON()\n * response, this helper constructs the credential from the server response.\n * @param {?Object} response The backend response to build a credential from.\n * @return {?fireauth.AuthCredential} The corresponding AuthCredential.\n */\nfireauth.AuthProvider.getCredentialFromResponse = function(response) {\n  // Handle phone Auth credential responses, as they have a different format\n  // from other backend responses (i.e. no providerId).\n  if (response['temporaryProof'] && response['phoneNumber']) {\n    return new fireauth.PhoneAuthCredential({\n      temporaryProof: response['temporaryProof'],\n      phoneNumber: response['phoneNumber']\n    });\n  }\n\n  // Get all OAuth response parameters from response.\n  var providerId = response && response['providerId'];\n\n  // Email and password is not supported as there is no situation where the\n  // server would return the password to the client.\n  if (!providerId || providerId === fireauth.idp.ProviderId.PASSWORD) {\n    return null;\n  }\n\n  var accessToken = response && response['oauthAccessToken'];\n  var accessTokenSecret = response && response['oauthTokenSecret'];\n  // Note this is not actually returned by the backend. It is introduced in\n  // rpcHandler.\n  var rawNonce = response && response['nonce'];\n  // Google Id Token returned when no additional scopes provided.\n  var idToken = response && response['oauthIdToken'];\n  // Pending token for SAML and OAuth/OIDC providers.\n  var pendingToken = response && response['pendingToken'];\n  try {\n    switch (providerId) {\n      case fireauth.idp.ProviderId.GOOGLE:\n        return fireauth.GoogleAuthProvider.credential(\n            idToken, accessToken);\n\n      case fireauth.idp.ProviderId.FACEBOOK:\n        return fireauth.FacebookAuthProvider.credential(\n            accessToken);\n\n      case fireauth.idp.ProviderId.GITHUB:\n        return fireauth.GithubAuthProvider.credential(\n            accessToken);\n\n      case fireauth.idp.ProviderId.TWITTER:\n        return fireauth.TwitterAuthProvider.credential(\n            accessToken, accessTokenSecret);\n\n      default:\n        if (!accessToken && !accessTokenSecret && !idToken && !pendingToken) {\n          return null;\n        }\n        if (pendingToken) {\n          if (providerId.indexOf(fireauth.constants.SAML_PREFIX) == 0) {\n            return new fireauth.SAMLAuthCredential(providerId, pendingToken);\n          } else {\n            // OIDC and non-default providers excluding Twitter.\n            return new fireauth.OAuthCredential(\n                providerId,\n                {\n                  'pendingToken': pendingToken,\n                  'idToken': response['oauthIdToken'],\n                  'accessToken': response['oauthAccessToken']\n                },\n                providerId);\n          }\n        }\n        return new fireauth.OAuthProvider(providerId).credential({\n          'idToken': idToken,\n          'accessToken': accessToken,\n          'rawNonce': rawNonce\n        });\n    }\n  } catch (e) {\n    return null;\n  }\n};\n\n\n/**\n * Constructs an Auth credential from a JSON representation.\n * Note, unlike getCredentialFromResponse which constructs the AuthCredential\n * from a server response, this helper constructs credential from the toJSON()\n * result.\n * @param {!Object|string} json The JSON representation to construct credential\n *     from.\n * @return {?fireauth.AuthCredential} The corresponding AuthCredential.\n */\nfireauth.AuthProvider.getCredentialFromJSON = function(json) {\n  var obj = typeof json === 'string' ? JSON.parse(json) : json;\n  var credential;\n  var fromJSON = [\n    fireauth.OAuthCredential.fromJSON,\n    fireauth.EmailAuthCredential.fromJSON,\n    fireauth.PhoneAuthCredential.fromJSON,\n    fireauth.SAMLAuthCredential.fromJSON\n  ];\n  for (var i = 0; i < fromJSON.length; i++) {\n    credential = fromJSON[i](obj);\n    if (credential) {\n      return credential;\n    }\n  }\n  return null;\n};\n\n\n/**\n * Constructs an Auth credential from a JSON representation.\n * @param {!Object|string} json The JSON representation to construct credential from.\n * @return {?fireauth.AuthCredential} The corresponding AuthCredential.\n */\nfireauth.AuthCredential.fromPlainObject =\n    fireauth.AuthProvider.getCredentialFromJSON;\n\n\n/**\n * Checks if OAuth is supported by provider, if not throws an error.\n * @param {!fireauth.AuthProvider} provider The provider to check.\n */\nfireauth.AuthProvider.checkIfOAuthSupported =\n    function(provider) {\n  if (!provider['isOAuthProvider']) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.INVALID_OAUTH_PROVIDER);\n  }\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the Auth event object.\n */\n\ngoog.provide('fireauth.AuthEvent');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.authenum.Error');\n\n\n/**\n * Defines the authentication event.\n * @param {!fireauth.AuthEvent.Type} type The Auth event type.\n * @param {?string=} opt_eventId The event identifier.\n * @param {?string=} opt_urlResponse The URL with IdP response.\n * @param {?string=} opt_sessionId The session ID used to prevent session\n *     fixation attacks.\n * @param {?fireauth.AuthError=} opt_error The optional error encountered.\n * @param {?string=} opt_postBody The optional POST body.\n * @param {?string=} opt_tenantId The optional tenant ID.\n * @constructor\n */\nfireauth.AuthEvent = function(\n    type, opt_eventId, opt_urlResponse, opt_sessionId, opt_error,\n    opt_postBody, opt_tenantId) {\n  /** @const @private {!fireauth.AuthEvent.Type} The Auth event type. */\n  this.type_ = type;\n  /** @const @private {?string} The Auth event ID. */\n  this.eventId_ = opt_eventId || null;\n  /** @const @private {?string} The callback URL with the sign in response. */\n  this.urlResponse_ = opt_urlResponse || null;\n  /** @const @private {?string} The sign in operation session ID. */\n  this.sessionId_ = opt_sessionId || null;\n  /** @const @private {?string} The POST body string if available. */\n  this.postBody_ = opt_postBody || null;\n  /** @const @private {?string} The tenant ID if available. */\n  this.tenantId_ = opt_tenantId || null;\n  /**\n   * @const @private {?fireauth.AuthError} The Auth event error if available.\n   */\n  this.error_ = opt_error || null;\n  if (!this.urlResponse_ && !this.error_) {\n    // Either URL or error is required. They can't be both null.\n    throw new fireauth.AuthError(fireauth.authenum.Error.INVALID_AUTH_EVENT);\n  } else if (this.urlResponse_ && this.error_) {\n    // An error must not be provided when a URL is available.\n    throw new fireauth.AuthError(fireauth.authenum.Error.INVALID_AUTH_EVENT);\n  } else if (this.urlResponse_ && !this.sessionId_) {\n    // A session ID must accompany a URL response.\n    throw new fireauth.AuthError(fireauth.authenum.Error.INVALID_AUTH_EVENT);\n  }\n};\n\n\n\n/**\n * Auth event operation types.\n * All Auth event types that are used for popup operations should be suffixed\n * with `Popup`, whereas those used for redirect operations should be suffixed\n * with `Redirect`.\n * TODO: consider changing the type from a string to an object with ID\n * and some metadata for determining mode: redirect, popup or none.\n * @enum {string}\n */\nfireauth.AuthEvent.Type = {\n  LINK_VIA_POPUP: 'linkViaPopup',\n  LINK_VIA_REDIRECT: 'linkViaRedirect',\n  REAUTH_VIA_POPUP: 'reauthViaPopup',\n  REAUTH_VIA_REDIRECT: 'reauthViaRedirect',\n  SIGN_IN_VIA_POPUP: 'signInViaPopup',\n  SIGN_IN_VIA_REDIRECT: 'signInViaRedirect',\n  UNKNOWN: 'unknown',\n  VERIFY_APP: 'verifyApp'\n};\n\n\n/**\n * @param {!fireauth.AuthEvent} event The Auth event.\n * @return {boolean} Whether the event is a redirect type.\n */\nfireauth.AuthEvent.isRedirect = function(event) {\n  return !!event.getType().match(/Redirect$/);\n};\n\n\n/**\n * @param {!fireauth.AuthEvent} event The Auth event.\n * @return {boolean} Whether the event is a popup type.\n */\nfireauth.AuthEvent.isPopup = function(event) {\n  return !!event.getType().match(/Popup$/);\n};\n\n\n/** @return {!fireauth.AuthEvent.Type} The type of Auth event. */\nfireauth.AuthEvent.prototype.getType = function() {\n  return this.type_;\n};\n\n\n/** @return {?string} The Auth event identifier. */\nfireauth.AuthEvent.prototype.getEventId = function() {\n  return this.eventId_;\n};\n\n\n/** @return {string} The event unique identifier. */\nfireauth.AuthEvent.prototype.getUid = function() {\n  var components = [];\n  components.push(this.type_);\n  if (this.eventId_) {\n    components.push(this.eventId_);\n  }\n  if (this.sessionId_) {\n    components.push(this.sessionId_);\n  }\n  if (this.tenantId_) {\n    components.push(this.tenantId_);\n  }\n  return components.join('-');\n};\n\n\n/** @return {?string} The url response of Auth event. */\nfireauth.AuthEvent.prototype.getUrlResponse = function() {\n  return this.urlResponse_;\n};\n\n\n/** @return {?string} The session ID Auth event. */\nfireauth.AuthEvent.prototype.getSessionId = function() {\n  return this.sessionId_;\n};\n\n\n/** @return {?string} The POST body of the Auth event, if available. */\nfireauth.AuthEvent.prototype.getPostBody = function() {\n  return this.postBody_;\n};\n\n\n/** @return {?string} The tenant ID of the Auth event, if available. */\nfireauth.AuthEvent.prototype.getTenantId = function() {\n  return this.tenantId_;\n};\n\n\n/** @return {?fireauth.AuthError} The error of Auth event. */\nfireauth.AuthEvent.prototype.getError = function() {\n  return this.error_;\n};\n\n\n/** @return {boolean} Whether Auth event has an error. */\nfireauth.AuthEvent.prototype.hasError = function() {\n  return !!this.error_;\n};\n\n\n/** @return {!Object} The plain object representation of event. */\nfireauth.AuthEvent.prototype.toPlainObject = function() {\n  return {\n    'type': this.type_,\n    'eventId': this.eventId_,\n    'urlResponse': this.urlResponse_,\n    'sessionId': this.sessionId_,\n    'postBody': this.postBody_,\n    'tenantId': this.tenantId_,\n    'error': this.error_ && this.error_.toPlainObject()\n  };\n};\n\n\n/**\n * @param {?Object} rawResponse The plain object representation of Auth event.\n * @return {?fireauth.AuthEvent} The Auth event representation of plain object.\n */\nfireauth.AuthEvent.fromPlainObject = function(rawResponse) {\n  var response = rawResponse || {};\n  if (response['type']) {\n    return new fireauth.AuthEvent(\n        response['type'],\n        response['eventId'],\n        response['urlResponse'],\n        response['sessionId'],\n        response['error'] &&\n            fireauth.AuthError.fromPlainObject(response['error']),\n        response['postBody'],\n        response['tenantId']\n        );\n  }\n  return null;\n};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Provides the universal link subscriber utility to allow\n * multiple subscriptions for incoming universal link detection.\n */\ngoog.provide('fireauth.UniversalLinkSubscriber');\n\ngoog.require('fireauth.util');\ngoog.require('goog.array');\n\n/**\n * Defines the universal link subscriber class used to allow multiple universal\n * link subscriptions since the underlying plugin only works with one.\n * This utility is needed since the universal link cordova plugin can only allow\n * one subscriber and multiple app instances can subscribe to this.\n * @constructor @final @struct\n */\nfireauth.UniversalLinkSubscriber = function() {\n  /**\n   * @private {?function(?Object)} The master callback that subscribes directly\n   *     to universalLinks.\n   */\n  this.masterCb_ = null;\n  /**\n   * @private {!Array<function(?Object)>} The list of external subscribers that\n   *     are triggered every time the master callback is triggered.\n   */\n  this.cb_ = [];\n};\n\n\n/**\n * @return {!fireauth.UniversalLinkSubscriber} The default universal link\n *     subscriber instance.\n */\nfireauth.UniversalLinkSubscriber.getInstance = function() {\n  if (!fireauth.UniversalLinkSubscriber.instance_) {\n    fireauth.UniversalLinkSubscriber.instance_ =\n        new fireauth.UniversalLinkSubscriber();\n  }\n  return fireauth.UniversalLinkSubscriber.instance_;\n};\n\n\n/** Clears singleton instance. Useful for testing. */\nfireauth.UniversalLinkSubscriber.clear = function() {\n  fireauth.UniversalLinkSubscriber.instance_ = null;\n};\n\n\n/**\n * @private {?fireauth.UniversalLinkSubscriber} The singleton universal\n *     link subscriber instance.\n */\nfireauth.UniversalLinkSubscriber.instance_ = null;\n\n\n/**\n * Subscribes a callback to the universal link plugin listener.\n * @param {function(?Object)} cb The callback to subscribe to the universal\n *     link plugin.\n */\nfireauth.UniversalLinkSubscriber.prototype.subscribe  = function(cb) {\n  var self = this;\n  this.cb_.push(cb);\n  if (!this.masterCb_) {\n    this.masterCb_ = function(event) {\n      for (var i = 0; i < self.cb_.length; i++) {\n        self.cb_[i](event);\n      }\n    };\n    var subscribe = fireauth.util.getObjectRef(\n        'universalLinks.subscribe', goog.global);\n    // For iOS environments, this plugin is not used, therefore this is a no-op\n    // and no error needs to be thrown.\n    if (typeof subscribe === 'function') {\n      subscribe(null, this.masterCb_);\n    }\n  }\n};\n\n\n/**\n * Unsubscribes a callback from the universal link plugin listener.\n * @param {function(?Object)} cb The callback to unsubscribe from the universal\n *     link plugin.\n */\nfireauth.UniversalLinkSubscriber.prototype.unsubscribe = function(cb) {\n  goog.array.removeAllIf(this.cb_, function(ele) {\n    return ele == cb;\n  });\n};\n\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Utility for handling RPC requests to server.\n */\ngoog.provide('fireauth.RpcHandler');\ngoog.provide('fireauth.RpcHandler.ApiMethodHandler');\ngoog.provide('fireauth.RpcHandler.VerifyAssertionData');\ngoog.provide('fireauth.XmlHttpFactory');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.AuthErrorWithCredential');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.constants');\ngoog.require('fireauth.idp');\ngoog.require('fireauth.idp.ProviderId');\ngoog.require('fireauth.object');\ngoog.require('fireauth.util');\ngoog.require('goog.Promise');\ngoog.require('goog.Uri');\ngoog.require('goog.html.TrustedResourceUrl');\ngoog.require('goog.json');\ngoog.require('goog.net.CorsXmlHttpFactory');\ngoog.require('goog.net.EventType');\ngoog.require('goog.net.FetchXmlHttpFactory');\ngoog.require('goog.net.XhrIo');\ngoog.require('goog.net.XmlHttpFactory');\ngoog.require('goog.net.jsloader');\ngoog.require('goog.object');\ngoog.require('goog.string.Const');\n\n\n\n/**\n * Firebase Auth XmlHttpRequest factory. This is useful for environments like\n * Node.js where XMLHttpRequest does not exist. XmlHttpFactory would be\n * initialized using the polyfill XMLHttpRequest module.\n * @param {function(new:XMLHttpRequest)} xmlHttpRequest The xmlHttpRequest\n *     constructor.\n * @constructor\n * @extends {goog.net.XmlHttpFactory}\n * @final\n */\nfireauth.XmlHttpFactory = function(xmlHttpRequest) {\n  /**\n   * @private {function(new:XMLHttpRequest)} The underlying XHR reference.\n   */\n  this.xmlHttpRequest_ = xmlHttpRequest;\n  fireauth.XmlHttpFactory.base(this, 'constructor');\n};\ngoog.inherits(fireauth.XmlHttpFactory, goog.net.XmlHttpFactory);\n\n\n/**\n * @return {!goog.net.XhrLike|!XMLHttpRequest} A new XhrLike instance.\n * @override\n */\nfireauth.XmlHttpFactory.prototype.createInstance = function() {\n  return new this.xmlHttpRequest_();\n};\n\n\n/**\n * @return {!Object} Options describing how XHR objects obtained from this\n *     factory should be used.\n * @override\n */\nfireauth.XmlHttpFactory.prototype.internalGetOptions = function() {\n  return {};\n};\n\n\n\n/**\n * Creates an RPC request handler for the project specified by the API key.\n *\n * @param {string} apiKey The API key.\n * @param {?Object=} opt_config The RPC request processor configuration.\n * @param {?string=} opt_firebaseClientVersion The optional Firebase client\n *     version to log with requests to Firebase Auth server.\n * @constructor\n */\nfireauth.RpcHandler = function(apiKey, opt_config, opt_firebaseClientVersion) {\n  /** @private {string} The project API key. */\n  this.apiKey_ = apiKey;\n  var config = opt_config || {};\n  this.secureTokenEndpoint_ = config['secureTokenEndpoint'] ||\n      fireauth.RpcHandler.SECURE_TOKEN_ENDPOINT_;\n  /**\n   * @private @const {!fireauth.util.Delay} The delay for secure token endpoint\n   *     network timeout.\n   */\n  this.secureTokenTimeout_ = config['secureTokenTimeout'] ||\n      fireauth.RpcHandler.DEFAULT_SECURE_TOKEN_TIMEOUT_;\n  /** @private @const {!Object} The secure token server headers. */\n  this.secureTokenHeaders_ = goog.object.clone(\n      config['secureTokenHeaders'] ||\n      fireauth.RpcHandler.DEFAULT_SECURE_TOKEN_HEADERS_);\n  /** @private {string} The Firebase Auth endpoint. */\n  this.firebaseEndpoint_ = config['firebaseEndpoint'] ||\n      fireauth.RpcHandler.FIREBASE_ENDPOINT_;\n  /** @private {string} The identity platform endpoint. */\n  this.identityPlatformEndpoint_ = config['identityPlatformEndpoint'] ||\n      fireauth.RpcHandler.IDENTITY_PLATFORM_ENDPOINT_;\n  /**\n   * @private @const {!fireauth.util.Delay} The delay for Firebase Auth endpoint\n   *     network timeout.\n   */\n  this.firebaseTimeout_ = config['firebaseTimeout'] ||\n      fireauth.RpcHandler.DEFAULT_FIREBASE_TIMEOUT_;\n  this.firebaseHeaders_ = goog.object.clone(\n      config['firebaseHeaders'] ||\n      fireauth.RpcHandler.DEFAULT_FIREBASE_HEADERS_);\n  // If Firebase client version needs to be logged too.\n  if (opt_firebaseClientVersion) {\n    // Log client version for Firebase Auth server.\n    this.firebaseHeaders_['X-Client-Version'] = opt_firebaseClientVersion;\n    // Log client version for securetoken server.\n    this.secureTokenHeaders_['X-Client-Version'] = opt_firebaseClientVersion;\n  }\n\n  // Get XMLHttpRequest reference.\n  var XMLHttpRequest = fireauth.RpcHandler.getXMLHttpRequest();\n  if (!XMLHttpRequest && !fireauth.util.isWorker()) {\n    // In a Node.js environment, xmlhttprequest module needs to be required.\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR,\n        'The XMLHttpRequest compatibility library was not found.');\n  }\n  /** @private {!goog.net.XmlHttpFactory|undefined} The XHR factory. */\n  this.rpcHandlerXhrFactory_ = undefined;\n  // Initialize XHR factory. CORS does not apply in native environments or\n  // workers so don't use CorsXmlHttpFactory in those cases.\n  if (fireauth.util.isWorker()) {\n    // For worker environment use FetchXmlHttpFactory.\n    this.rpcHandlerXhrFactory_ = new goog.net.FetchXmlHttpFactory(\n        /** @type {!WorkerGlobalScope} */ (self));\n  } else if (fireauth.util.isNativeEnvironment()) {\n    // For Node.js, this is the polyfill library. For other environments,\n    // this is the native global XMLHttpRequest.\n    this.rpcHandlerXhrFactory_ = new fireauth.XmlHttpFactory(\n        /** @type {function(new:XMLHttpRequest)} */ (XMLHttpRequest));\n  } else {\n    // CORS Browser environment.\n    this.rpcHandlerXhrFactory_ = new goog.net.CorsXmlHttpFactory();\n  }\n  /** @private {?string} The tenant ID. */\n  this.tenantId_ = null;\n};\n\n\n/**\n * @return {?function(new:XMLHttpRequest)|undefined} The current environment\n *     XMLHttpRequest. This is undefined for worker environment.\n */\nfireauth.RpcHandler.getXMLHttpRequest = function() {\n  // In Node.js XMLHttpRequest is polyfilled.\n  var isNode = fireauth.util.getEnvironment() == fireauth.util.Env.NODE;\n  var XMLHttpRequest = goog.global['XMLHttpRequest'] ||\n      (isNode &&\n       firebase.INTERNAL['node'] &&\n       firebase.INTERNAL['node']['XMLHttpRequest']);\n  return XMLHttpRequest;\n};\n\n\n/**\n * Enums for HTTP request methods.\n * @enum {string}\n */\nfireauth.RpcHandler.HttpMethod = {\n  POST: 'POST',\n  GET: 'GET'\n};\n\n\n/**\n * Firebase Auth server error codes.\n * @enum {string}\n */\nfireauth.RpcHandler.ServerError = {\n  ADMIN_ONLY_OPERATION: 'ADMIN_ONLY_OPERATION',\n  CAPTCHA_CHECK_FAILED: 'CAPTCHA_CHECK_FAILED',\n  CORS_UNSUPPORTED: 'CORS_UNSUPPORTED',\n  CREDENTIAL_MISMATCH: 'CREDENTIAL_MISMATCH',\n  CREDENTIAL_TOO_OLD_LOGIN_AGAIN: 'CREDENTIAL_TOO_OLD_LOGIN_AGAIN',\n  DYNAMIC_LINK_NOT_ACTIVATED: 'DYNAMIC_LINK_NOT_ACTIVATED',\n  EMAIL_CHANGE_NEEDS_VERIFICATION: 'EMAIL_CHANGE_NEEDS_VERIFICATION',\n  EMAIL_EXISTS: 'EMAIL_EXISTS',\n  EMAIL_NOT_FOUND: 'EMAIL_NOT_FOUND',\n  EXPIRED_OOB_CODE: 'EXPIRED_OOB_CODE',\n  FEDERATED_USER_ID_ALREADY_LINKED: 'FEDERATED_USER_ID_ALREADY_LINKED',\n  INVALID_APP_CREDENTIAL: 'INVALID_APP_CREDENTIAL',\n  INVALID_APP_ID: 'INVALID_APP_ID',\n  INVALID_CERT_HASH: 'INVALID_CERT_HASH',\n  INVALID_CODE: 'INVALID_CODE',\n  INVALID_CONTINUE_URI: 'INVALID_CONTINUE_URI',\n  INVALID_CUSTOM_TOKEN: 'INVALID_CUSTOM_TOKEN',\n  INVALID_DYNAMIC_LINK_DOMAIN: 'INVALID_DYNAMIC_LINK_DOMAIN',\n  INVALID_EMAIL: 'INVALID_EMAIL',\n  INVALID_ID_TOKEN: 'INVALID_ID_TOKEN',\n  INVALID_IDP_RESPONSE: 'INVALID_IDP_RESPONSE',\n  INVALID_IDENTIFIER: 'INVALID_IDENTIFIER',\n  INVALID_MESSAGE_PAYLOAD: 'INVALID_MESSAGE_PAYLOAD',\n  INVALID_MFA_PENDING_CREDENTIAL: 'INVALID_MFA_PENDING_CREDENTIAL',\n  INVALID_OAUTH_CLIENT_ID: 'INVALID_OAUTH_CLIENT_ID',\n  INVALID_OOB_CODE: 'INVALID_OOB_CODE',\n  INVALID_PASSWORD: 'INVALID_PASSWORD',\n  INVALID_PENDING_TOKEN: 'INVALID_PENDING_TOKEN',\n  INVALID_PHONE_NUMBER: 'INVALID_PHONE_NUMBER',\n  INVALID_PROVIDER_ID: 'INVALID_PROVIDER_ID',\n  INVALID_RECIPIENT_EMAIL: 'INVALID_RECIPIENT_EMAIL',\n  INVALID_SENDER: 'INVALID_SENDER',\n  INVALID_SESSION_INFO: 'INVALID_SESSION_INFO',\n  INVALID_TEMPORARY_PROOF: 'INVALID_TEMPORARY_PROOF',\n  INVALID_TENANT_ID: 'INVALID_TENANT_ID',\n  MFA_ENROLLMENT_NOT_FOUND: 'MFA_ENROLLMENT_NOT_FOUND',\n  MISSING_ANDROID_PACKAGE_NAME: 'MISSING_ANDROID_PACKAGE_NAME',\n  MISSING_APP_CREDENTIAL: 'MISSING_APP_CREDENTIAL',\n  MISSING_CODE: 'MISSING_CODE',\n  MISSING_CONTINUE_URI: 'MISSING_CONTINUE_URI',\n  MISSING_CUSTOM_TOKEN: 'MISSING_CUSTOM_TOKEN',\n  MISSING_IOS_BUNDLE_ID: 'MISSING_IOS_BUNDLE_ID',\n  MISSING_MFA_ENROLLMENT_ID: 'MISSING_MFA_ENROLLMENT_ID',\n  MISSING_MFA_PENDING_CREDENTIAL: 'MISSING_MFA_PENDING_CREDENTIAL',\n  MISSING_OOB_CODE: 'MISSING_OOB_CODE',\n  MISSING_OR_INVALID_NONCE: 'MISSING_OR_INVALID_NONCE',\n  MISSING_PASSWORD: 'MISSING_PASSWORD',\n  MISSING_PHONE_NUMBER: 'MISSING_PHONE_NUMBER',\n  MISSING_SESSION_INFO: 'MISSING_SESSION_INFO',\n  OPERATION_NOT_ALLOWED: 'OPERATION_NOT_ALLOWED',\n  PASSWORD_LOGIN_DISABLED: 'PASSWORD_LOGIN_DISABLED',\n  QUOTA_EXCEEDED: 'QUOTA_EXCEEDED',\n  RESET_PASSWORD_EXCEED_LIMIT: 'RESET_PASSWORD_EXCEED_LIMIT',\n  REJECTED_CREDENTIAL: 'REJECTED_CREDENTIAL',\n  SECOND_FACTOR_EXISTS: 'SECOND_FACTOR_EXISTS',\n  SECOND_FACTOR_LIMIT_EXCEEDED: 'SECOND_FACTOR_LIMIT_EXCEEDED',\n  SESSION_EXPIRED: 'SESSION_EXPIRED',\n  TENANT_ID_MISMATCH: 'TENANT_ID_MISMATCH',\n  TOKEN_EXPIRED: 'TOKEN_EXPIRED',\n  TOO_MANY_ATTEMPTS_TRY_LATER: 'TOO_MANY_ATTEMPTS_TRY_LATER',\n  UNSUPPORTED_FIRST_FACTOR: 'UNSUPPORTED_FIRST_FACTOR',\n  UNSUPPORTED_TENANT_OPERATION: 'UNSUPPORTED_TENANT_OPERATION',\n  UNVERIFIED_EMAIL: 'UNVERIFIED_EMAIL',\n  UNAUTHORIZED_DOMAIN: 'UNAUTHORIZED_DOMAIN',\n  USER_CANCELLED: 'USER_CANCELLED',\n  USER_DISABLED: 'USER_DISABLED',\n  USER_NOT_FOUND: 'USER_NOT_FOUND',\n  WEAK_PASSWORD: 'WEAK_PASSWORD'\n};\n\n\n/**\n * A map of server error codes to client errors.\n * @typedef {!Object<\n *     !fireauth.RpcHandler.ServerError, !fireauth.authenum.Error>}\n */\nfireauth.RpcHandler.ServerErrorMap;\n\n\n/**\n * Firebase Auth response field names.\n * @enum {string}\n */\nfireauth.RpcHandler.AuthServerField = {\n  ALL_PROVIDERS: 'allProviders',\n  AUTH_URI: 'authUri',\n  AUTHORIZED_DOMAINS: 'authorizedDomains',\n  DYNAMIC_LINKS_DOMAIN: 'dynamicLinksDomain',\n  EMAIL: 'email',\n  ERROR_MESSAGE: 'errorMessage',\n  EXPIRES_IN: 'expiresIn',\n  ID_TOKEN: 'idToken',\n  MFA_PENDING_CREDENTIAL: 'mfaPendingCredential',\n  NEED_CONFIRMATION: 'needConfirmation',\n  OAUTH_ID_TOKEN: 'oauthIdToken',\n  PENDING_TOKEN: 'pendingToken',\n  PHONE_RESPONSE_INFO: 'phoneResponseInfo',\n  PHONE_SESSION_INFO: 'phoneSessionInfo',\n  POST_BODY: 'postBody',\n  PROVIDER_ID: 'providerId',\n  RECAPTCHA_SITE_KEY: 'recaptchaSiteKey',\n  REQUEST_URI: 'requestUri',\n  REFRESH_TOKEN: 'refreshToken',\n  SESSION_ID: 'sessionId',\n  SESSION_INFO: 'sessionInfo',\n  SIGNIN_METHODS: 'signinMethods',\n  TEMPORARY_PROOF: 'temporaryProof'\n};\n\n\n/**\n * Firebase Auth response injected fields.\n * @enum {string}\n */\nfireauth.RpcHandler.InjectedResponseField = {\n  NONCE: 'nonce'\n};\n\n\n/**\n * Firebase Auth getOobConfirmationCode requestType possible values.\n * @enum {string}\n */\nfireauth.RpcHandler.GetOobCodeRequestType = {\n  EMAIL_SIGNIN: 'EMAIL_SIGNIN',\n  NEW_EMAIL_ACCEPT: 'NEW_EMAIL_ACCEPT',\n  PASSWORD_RESET: 'PASSWORD_RESET',\n  VERIFY_AND_CHANGE_EMAIL: 'VERIFY_AND_CHANGE_EMAIL',\n  VERIFY_EMAIL: 'VERIFY_EMAIL'\n};\n\n\n/**\n * Firebase Auth response field names.\n * @enum {string}\n */\nfireauth.RpcHandler.StsServerField = {\n  ACCESS_TOKEN: 'access_token',\n  EXPIRES_IN: 'expires_in',\n  REFRESH_TOKEN: 'refresh_token'\n};\n\n\n/**\n * @return {string} The API key.\n */\nfireauth.RpcHandler.prototype.getApiKey = function() {\n  return this.apiKey_;\n};\n\n\n/**\n * The Firebase custom locale header.\n * @const {string}\n * @private\n */\nfireauth.RpcHandler.FIREBASE_LOCALE_KEY_ = 'X-Firebase-Locale';\n\n\n/**\n * The secure token endpoint.\n * @const {string}\n * @private\n */\nfireauth.RpcHandler.SECURE_TOKEN_ENDPOINT_ =\n    'https://securetoken.googleapis.com/v1/token';\n\n\n/**\n * The default timeout delay (units in milliseconds) for requests sending to\n *     STS token endpoint.\n * @const {!fireauth.util.Delay}\n * @private\n */\nfireauth.RpcHandler.DEFAULT_SECURE_TOKEN_TIMEOUT_ =\n    new fireauth.util.Delay(30000, 60000);\n\n\n/**\n * The STS token RPC content headers.\n * @const {!Object}\n * @private\n */\nfireauth.RpcHandler.DEFAULT_SECURE_TOKEN_HEADERS_ = {\n  'Content-Type': 'application/x-www-form-urlencoded'\n};\n\n\n/**\n * The Firebase endpoint.\n * @const {string}\n * @private\n */\nfireauth.RpcHandler.FIREBASE_ENDPOINT_ =\n    'https://www.googleapis.com/identitytoolkit/v3/relyingparty/';\n\n\n/**\n * The Identity Platform endpoint.\n * @const {string}\n * @private\n */\nfireauth.RpcHandler.IDENTITY_PLATFORM_ENDPOINT_ =\n    'https://identitytoolkit.googleapis.com/v2/';\n\n\n/**\n * The default timeout delay (units in milliseconds) for requests sending to\n *     Firebase endpoint.\n * @const {!fireauth.util.Delay}\n * @private\n */\nfireauth.RpcHandler.DEFAULT_FIREBASE_TIMEOUT_ =\n    new fireauth.util.Delay(30000, 60000);\n\n\n/**\n * The Firebase RPC content headers.\n * @const {!Object}\n * @private\n */\nfireauth.RpcHandler.DEFAULT_FIREBASE_HEADERS_ = {\n  'Content-Type': 'application/json'\n};\n\n\n/**\n * Updates the custom locale header.\n * @param {?string} languageCode The new languageCode.\n */\nfireauth.RpcHandler.prototype.updateCustomLocaleHeader =\n    function(languageCode) {\n  if (languageCode) {\n    // If a language code is provided, add it to the header.\n    this.firebaseHeaders_[fireauth.RpcHandler.FIREBASE_LOCALE_KEY_] =\n        languageCode;\n  } else {\n    // Otherwise remove the custom locale header.\n    delete this.firebaseHeaders_[fireauth.RpcHandler.FIREBASE_LOCALE_KEY_];\n  }\n};\n\n\n/**\n * Updates the emulator configuration.\n * @param {?fireauth.constants.EmulatorSettings} emulatorConfig The new\n *     emulator config.\n */\nfireauth.RpcHandler.prototype.updateEmulatorConfig = function(emulatorConfig) {\n  if (!emulatorConfig) {\n    return;\n  }\n  // If an emulator config is provided, update the endpoints.\n  this.secureTokenEndpoint_ =\n    fireauth.RpcHandler.generateEmululatorEndpointUrl_(\n      fireauth.RpcHandler.SECURE_TOKEN_ENDPOINT_, emulatorConfig);\n  this.firebaseEndpoint_ =\n    fireauth.RpcHandler.generateEmululatorEndpointUrl_(\n      fireauth.RpcHandler.FIREBASE_ENDPOINT_, emulatorConfig);\n  this.identityPlatformEndpoint_ =\n    fireauth.RpcHandler.generateEmululatorEndpointUrl_(\n      fireauth.RpcHandler.IDENTITY_PLATFORM_ENDPOINT_, emulatorConfig);\n}\n\n  /**\n   * Creates an endpoint URL intended for use by the emulator.\n   * @param {string} endpoint the production endpoint URL.\n   * @param {?fireauth.constants.EmulatorSettings} emulatorConfig The emulator\n   *     config.\n   * @return {string} The emulator endpoint URL.\n   * @private\n   */\nfireauth.RpcHandler.generateEmululatorEndpointUrl_ = function(endpoint, emulatorConfig) {\n  const uri = goog.Uri.parse(endpoint);\n  const emulatorUri = goog.Uri.parse(emulatorConfig.url);\n  uri.setPath(uri.getDomain() + uri.getPath());\n  uri.setScheme(emulatorUri.getScheme());\n  uri.setDomain(emulatorUri.getDomain());\n  uri.setPort(emulatorUri.getPort());\n  return uri.toString();\n}\n\n\n/**\n * Updates the X-Client-Version in the header.\n * @param {?string} clientVersion The new client version.\n */\nfireauth.RpcHandler.prototype.updateClientVersion = function(clientVersion) {\n  if (clientVersion) {\n    // Update client version for Firebase Auth server.\n    this.firebaseHeaders_['X-Client-Version'] = clientVersion;\n    // Update client version for securetoken server.\n    this.secureTokenHeaders_['X-Client-Version'] = clientVersion;\n  } else {\n    // Remove client version from header.\n    delete this.firebaseHeaders_['X-Client-Version'];\n    delete this.secureTokenHeaders_['X-Client-Version'];\n  }\n};\n\n\n/**\n * Updates the tenant ID in the request.\n * @param {?string} tenantId The new tenant ID.\n */\nfireauth.RpcHandler.prototype.updateTenantId = function(tenantId) {\n  this.tenantId_ = tenantId;\n};\n\n\n/**\n * Returns the tenant ID.\n * @return {?string} The tenant ID.\n */\nfireauth.RpcHandler.prototype.getTenantId = function() {\n  return this.tenantId_;\n};\n\n\n/**\n * Sends XhrIo request using goog.net.XhrIo.\n * @param {string} url The URL to make a request to.\n * @param {function(?Object)=} opt_callback The callback to run on completion.\n * @param {fireauth.RpcHandler.HttpMethod=} opt_httpMethod The HTTP send method.\n * @param {?ArrayBuffer|?ArrayBufferView|?Blob|?Document|?FormData|string=}\n *     opt_data The request content.\n * @param {?Object=} opt_headers The request content headers.\n * @param {number=} opt_timeout The request timeout.\n * @private\n */\nfireauth.RpcHandler.prototype.sendXhr_ = function(\n    url,\n    opt_callback,\n    opt_httpMethod,\n    opt_data,\n    opt_headers,\n    opt_timeout) {\n  var sendXhr;\n  if (fireauth.util.supportsCors() || fireauth.util.isWorker()) {\n    // If supports CORS use goog.net.XhrIo.\n    sendXhr = goog.bind(this.sendXhrUsingXhrIo_, this);\n  } else {\n    // Load gapi.client.request and gapi.auth dependency dynamically.\n    if (!fireauth.RpcHandler.loadGApi_) {\n      fireauth.RpcHandler.loadGApi_ =\n          new goog.Promise(function(resolve, reject) {\n            // On load, resolve.\n            fireauth.RpcHandler.loadGApiJs_(resolve, reject);\n          });\n    }\n    // If does not support CORS, use gapi.client.request.\n    sendXhr = goog.bind(this.sendXhrUsingGApiClient_, this);\n  }\n  sendXhr(\n      url, opt_callback, opt_httpMethod, opt_data, opt_headers, opt_timeout);\n};\n\n\n/**\n * Sends XhrIo request using goog.net.XhrIo.\n * @param {string} url The URL to make a request to.\n * @param {function(?Object)=} opt_callback The callback to run on completion.\n * @param {fireauth.RpcHandler.HttpMethod=} opt_httpMethod The HTTP send method.\n * @param {?ArrayBuffer|?ArrayBufferView|?Blob|?Document|?FormData|string=}\n *     opt_data The request content.\n * @param {?Object=} opt_headers The request content headers.\n * @param {number=} opt_timeout The request timeout.\n * @private\n */\nfireauth.RpcHandler.prototype.sendXhrUsingXhrIo_ = function(\n    url,\n    opt_callback,\n    opt_httpMethod,\n    opt_data,\n    opt_headers,\n    opt_timeout) {\n  if (fireauth.util.isWorker() && !fireauth.util.isFetchSupported()) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.OPERATION_NOT_SUPPORTED,\n        'fetch, Headers and Request native APIs or equivalent Polyfills ' +\n        'must be available to support HTTP requests from a Worker ' +\n        'environment.');\n  }\n  var xhrIo = new goog.net.XhrIo(this.rpcHandlerXhrFactory_);\n\n  // xhrIo.setTimeoutInterval not working in IE10 and IE11, handle manually.\n  var requestTimeout;\n  if (opt_timeout) {\n    xhrIo.setTimeoutInterval(opt_timeout);\n    requestTimeout = setTimeout(function() {\n      xhrIo.dispatchEvent(goog.net.EventType.TIMEOUT);\n    }, opt_timeout);\n  }\n  // Run callback function on completion.\n  xhrIo.listen(\n      goog.net.EventType.COMPLETE,\n      /** @this {goog.net.XhrIo} */\n      function() {\n        // Clear timeout timer.\n        if (requestTimeout) {\n          clearTimeout(requestTimeout);\n        }\n        // Response assumed to be in json format. If not, catch, log error and\n        // pass null to callback.\n        var response = null;\n        try {\n          // Do not use this.responseJson() as it uses goog.json.parse\n          // underneath. Internal goog.json.parse parsing uses eval and since\n          // recommended Content Security Policy does not allow unsafe-eval,\n          // this is failing and throwing an error in chrome extensions and\n          // warnings else where. Use native parsing instead via JSON.parse.\n          response = JSON.parse(this.getResponseText()) || null;\n        } catch (e) {\n          response = null;\n        }\n        if (opt_callback) {\n          opt_callback(/** @type {?Object} */ (response));\n        }\n      });\n  // Dispose xhrIo on ready.\n  xhrIo.listenOnce(\n      goog.net.EventType.READY,\n      /** @this {goog.net.XhrIo} */\n      function() {\n        // Clear timeout timer.\n        if (requestTimeout) {\n          clearTimeout(requestTimeout);\n        }\n        // Dispose xhrIo.\n        this.dispose();\n      });\n  // Listen to timeout error.\n  // This should work when request is aborted too.\n  xhrIo.listenOnce(\n      goog.net.EventType.TIMEOUT,\n      /** @this {goog.net.XhrIo} */\n      function() {\n        // Clear timeout timer.\n        if (requestTimeout) {\n          clearTimeout(requestTimeout);\n        }\n        // Dispose xhrIo.\n        this.dispose();\n        // The request timed out.\n        if (opt_callback) {\n          opt_callback(null);\n        }\n      });\n  xhrIo.send(url, opt_httpMethod, opt_data, opt_headers);\n};\n\n\n/**\n * @const {!goog.string.Const} The GApi client library URL.\n * @private\n */\nfireauth.RpcHandler.GAPI_SRC_ = goog.string.Const.from(\n    'https://apis.google.com/js/client.js?onload=%{onload}');\n\n\n/**\n * @const {string}\n * @private\n */\nfireauth.RpcHandler.GAPI_CALLBACK_NAME_ =\n    '__fcb' + Math.floor(Math.random() * 1000000).toString();\n\n\n/**\n * Loads the GApi client library if it is not loaded.\n * @param {function()} callback The callback to invoke once it's loaded.\n * @param {function(?Object)} errback The error callback.\n * @private\n */\nfireauth.RpcHandler.loadGApiJs_ = function(callback, errback) {\n  // If gapi.client.request not available, load it dynamically.\n  if (!((window['gapi'] || {})['client'] || {})['request']) {\n    goog.global[fireauth.RpcHandler.GAPI_CALLBACK_NAME_] = function() {\n      // Callback will be called by GApi, test properly loaded here instead of\n      // after jsloader resolves.\n      if (!((window['gapi'] || {})['client'] || {})['request']) {\n        errback(new Error(fireauth.RpcHandler.ServerError.CORS_UNSUPPORTED));\n      } else {\n        callback();\n      }\n    };\n    var url = goog.html.TrustedResourceUrl.format(\n        fireauth.RpcHandler.GAPI_SRC_,\n        {'onload': fireauth.RpcHandler.GAPI_CALLBACK_NAME_});\n    // TODO: replace goog.net.jsloader with our own script includer.\n    var result = goog.net.jsloader.safeLoad(url);\n    result.addErrback(function() {\n      // In case file fails to load.\n      errback(new Error(fireauth.RpcHandler.ServerError.CORS_UNSUPPORTED));\n    });\n  } else {\n    callback();\n  }\n};\n\n\n/**\n * Sends XhrIo request using gapi.client.\n * @param {string} url The URL to make a request to.\n * @param {function(?Object)=} opt_callback The callback to run on completion.\n * @param {fireauth.RpcHandler.HttpMethod=} opt_httpMethod The HTTP send method.\n * @param {?ArrayBuffer|?ArrayBufferView|?Blob|?Document|?FormData|string=}\n *     opt_data The request content.\n * @param {?Object=} opt_headers The request content headers.\n * @param {number=} opt_timeout The request timeout.\n * @private\n */\nfireauth.RpcHandler.prototype.sendXhrUsingGApiClient_ = function(\n    url,\n    opt_callback,\n    opt_httpMethod,\n    opt_data,\n    opt_headers,\n    opt_timeout) {\n  var self = this;\n  // Wait for GApi dependency to load.\n  fireauth.RpcHandler.loadGApi_.then(function() {\n    window['gapi']['client']['setApiKey'](self.getApiKey());\n    // GApi maintains the Auth result and automatically append the Auth token to\n    // all outgoing requests. Firebase Auth requests will be rejected if there\n    // are others scopes (e.g. google plus) for the Auth token. Need to empty\n    // the token before call gitkit api. Restored in callback.\n    var oauth2Token = window['gapi']['auth']['getToken']();\n    window['gapi']['auth']['setToken'](null);\n    window['gapi']['client']['request']({\n      'path': url,\n      'method': opt_httpMethod,\n      'body': opt_data,\n      'headers': opt_headers,\n      // This needs to be set to none, otherwise the access token will be passed\n      // in the header field causing apiary to complain.\n      'authType': 'none',\n      'callback': function(response) {\n        window['gapi']['auth']['setToken'](oauth2Token);\n        if (opt_callback) {\n          opt_callback(response);\n        }\n      }\n    });\n  }).thenCatch(function(error) {\n    // Catches failure to support CORS and propagates it.\n    if (opt_callback) {\n      // Simulate backend server error to be caught by upper layer.\n      opt_callback({\n        'error': {\n          'message': (error && error['message']) ||\n              fireauth.RpcHandler.ServerError.CORS_UNSUPPORTED\n        }\n      });\n    }\n  });\n};\n\n\n/**\n * Validates the request for the STS access token.\n *\n * @param {?Object} data The STS token request body.\n * @return {boolean} Whether the request is valid.\n * @private\n */\nfireauth.RpcHandler.prototype.validateStsTokenRequest_ = function(data) {\n  if (data['grant_type'] == 'refresh_token' && data['refresh_token']) {\n    // Exchange refresh token.\n    return true;\n  } else if (data['grant_type'] == 'authorization_code' && data['code']) {\n    // Exchange ID token.\n    return true;\n  } else {\n    // Invalid.\n    return false;\n  }\n};\n\n\n/**\n * Handles the request for the STS access token.\n *\n * @param {!Object} data The STS token request body.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.requestStsToken = function(data) {\n  var self = this;\n  return new goog.Promise(function(resolve, reject) {\n    if (self.validateStsTokenRequest_(data)) {\n      self.sendXhr_(\n          self.secureTokenEndpoint_ + '?key=' +\n          encodeURIComponent(self.getApiKey()),\n          function(response) {\n            if (!response) {\n              // An unparseable response from the XHR most likely indicates some\n              // problem with the network.\n              reject(new fireauth.AuthError(\n                  fireauth.authenum.Error.NETWORK_REQUEST_FAILED));\n            } else if (fireauth.RpcHandler.hasError_(response)) {\n              reject(fireauth.RpcHandler.getDeveloperError_(response));\n            } else if (\n                !response[fireauth.RpcHandler.StsServerField.ACCESS_TOKEN] ||\n                !response[fireauth.RpcHandler.StsServerField.REFRESH_TOKEN]) {\n              reject(new fireauth.AuthError(\n                  fireauth.authenum.Error.INTERNAL_ERROR));\n            } else {\n              resolve(response);\n            }\n          },\n          fireauth.RpcHandler.HttpMethod.POST,\n          goog.Uri.QueryData.createFromMap(data).toString(),\n          self.secureTokenHeaders_,\n          self.secureTokenTimeout_.get());\n    } else {\n      reject(new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR));\n    }\n  });\n};\n\n\n/**\n * @param {!Object} data The object to serialize.\n * @return {string} The serialized object with null, undefined and empty string\n *     values removed.\n * @private\n */\nfireauth.RpcHandler.serialize_ = function(data) {\n  // goog.json.serialize converts undefined values to null.\n  // This helper removes all empty strings, nulls and undefined from serialized\n  // object.\n  // Serialize trimmed data.\n  return goog.json.serialize(fireauth.util.copyWithoutNullsOrUndefined(data));\n};\n\n\n/**\n * Creates and executes a request for the given API method using the legacy\n * Firebase Auth endpoint.\n * @param {string} method The API method.\n * @param {!fireauth.RpcHandler.HttpMethod} httpMethod The http request method.\n * @param {!Object} data The data for the API request. In the case of a GET\n *     request, the contents of this object will be form encoded and appended\n *     to the query string of the URL. No post body is sent in that case. If an\n *     object value is specified, it will be converted to a string:\n *     encodeURIComponent(String(value)).\n * @param {?fireauth.RpcHandler.ServerErrorMap=} opt_customErrorMap A map\n *     of server error codes to client errors to override default error\n *     handling.\n * @param {boolean=} opt_cachebuster Whether to append a unique string to\n *     request to force backend to return an uncached response to request.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.requestFirebaseEndpoint = function(\n    method, httpMethod, data, opt_customErrorMap, opt_cachebuster) {\n  return this.requestAuthEndpoint_(\n      this.firebaseEndpoint_, method, httpMethod, data, opt_customErrorMap,\n      opt_cachebuster);\n};\n\n\n/**\n * Creates and executes a request for the given API method using the identity\n * platform endpoint.\n * @param {string} method The API method.\n * @param {!fireauth.RpcHandler.HttpMethod} httpMethod The http request method.\n * @param {!Object} data The data for the API request. In the case of a GET\n *     request, the contents of this object will be form encoded and appended\n *     to the query string of the URL. No post body is sent in that case. If an\n *     object value is specified, it will be converted to a string:\n *     encodeURIComponent(String(value)).\n * @param {?fireauth.RpcHandler.ServerErrorMap=} opt_customErrorMap A map\n *     of server error codes to client errors to override default error\n *     handling.\n * @param {boolean=} opt_cachebuster Whether to append a unique string to\n *     request to force backend to return an uncached response to request.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.requestIdentityPlatformEndpoint = function(\n    method, httpMethod, data, opt_customErrorMap, opt_cachebuster) {\n  return this.requestAuthEndpoint_(\n      this.identityPlatformEndpoint_, method, httpMethod, data,\n      opt_customErrorMap, opt_cachebuster);\n};\n\n\n/**\n * Creates and executes a request for the given API method and Auth endpoint.\n * @param {string} endpoint The Auth endpoint to use.\n * @param {string} method The API method.\n * @param {!fireauth.RpcHandler.HttpMethod} httpMethod The http request method.\n * @param {!Object} data The data for the API request. In the case of a GET\n *     request, the contents of this object will be form encoded and appended\n *     to the query string of the URL. No post body is sent in that case. If an\n *     object value is specified, it will be converted to a string:\n *     encodeURIComponent(String(value)).\n * @param {?fireauth.RpcHandler.ServerErrorMap=} opt_customErrorMap A map\n *     of server error codes to client errors to override default error\n *     handling.\n * @param {boolean=} opt_cachebuster Whether to append a unique string to\n *     request to force backend to return an uncached response to request.\n * @return {!goog.Promise<!Object>}\n * @private\n */\nfireauth.RpcHandler.prototype.requestAuthEndpoint_ = function(\n    endpoint, method, httpMethod, data, opt_customErrorMap, opt_cachebuster) {\n  var self = this;\n  // Construct endpoint URL.\n  var uri = goog.Uri.parse(endpoint + method);\n  uri.setParameterValue('key', this.getApiKey());\n  // Check whether to append cachebuster to request.\n  if (opt_cachebuster) {\n    uri.setParameterValue('cb', goog.now().toString());\n  }\n  // Firebase allows GET endpoints.\n  var isGet = httpMethod == fireauth.RpcHandler.HttpMethod.GET;\n  if (isGet) {\n    // For GET HTTP method, append data to query string.\n    for (var key in data) {\n      if (data.hasOwnProperty(key)) {\n        uri.setParameterValue(key, data[key]);\n      }\n    }\n  }\n  return new goog.Promise(function(resolve, reject) {\n    self.sendXhr_(\n        uri.toString(),\n        function(response) {\n          if (!response) {\n            // An unparseable response from the XHR most likely indicates some\n            // problem with the network.\n            reject(new fireauth.AuthError(\n                fireauth.authenum.Error.NETWORK_REQUEST_FAILED));\n          } else if (fireauth.RpcHandler.hasError_(response)) {\n            reject(fireauth.RpcHandler.getDeveloperError_(response,\n                opt_customErrorMap || {}));\n          } else {\n            resolve(response);\n          }\n        },\n        httpMethod,\n        // No post body data in GET requests.\n        isGet ? undefined : fireauth.RpcHandler.serialize_(data),\n        self.firebaseHeaders_,\n        self.firebaseTimeout_.get());\n  });\n};\n\n\n/**\n * Verifies that the request has a valid email set.\n * @param {!Object} request\n * @private\n */\nfireauth.RpcHandler.validateRequestHasEmail_ = function(request) {\n  if (!fireauth.util.isValidEmailAddress(request['email'])) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INVALID_EMAIL);\n  }\n};\n\n\n/**\n * Verifies that the response has a valid email set.\n * @param {!Object} response\n * @private\n */\nfireauth.RpcHandler.validateResponseHasEmail_ = function(response) {\n  if (!fireauth.util.isValidEmailAddress(response['email'])) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n};\n\n\n/**\n * Verifies that the an email is valid, if it is there.\n * @param {!Object} request\n * @private\n */\nfireauth.RpcHandler.validateEmailIfPresent_ = function(request) {\n  if ('email' in request) {\n    fireauth.RpcHandler.validateRequestHasEmail_(request);\n  }\n};\n\n\n/**\n * @param {string} providerId The provider ID.\n * @param {?Array<string>=} opt_additionalScopes The list of scope strings.\n * @return {?string} The IDP and its comma separated scope strings serialized.\n * @private\n */\nfireauth.RpcHandler.getAdditionalScopes_ =\n    function(providerId, opt_additionalScopes) {\n  var scopes = {};\n  if (opt_additionalScopes && opt_additionalScopes.length) {\n    scopes[providerId] = opt_additionalScopes.join(',');\n    // Return stringified scopes.\n    return goog.json.serialize(scopes);\n  }\n  return null;\n};\n\n\n/**\n * Validates a response from getAuthUri.\n * @param {?Object} response The getAuthUri response data.\n * @private\n */\nfireauth.RpcHandler.validateGetAuthResponse_ = function(response) {\n  if (!response[fireauth.RpcHandler.AuthServerField.AUTH_URI]) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR,\n        'Unable to determine the authorization endpoint for the specified '+\n        'provider. This may be an issue in the provider configuration.');\n  } else if ( !response[fireauth.RpcHandler.AuthServerField.SESSION_ID]) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n};\n\n\n/**\n * Requests createAuthUri endpoint to retrieve the authUri and session ID for\n * the start of an OAuth handshake.\n * @param {string} providerId The provider ID.\n * @param {string} continueUri The IdP callback URL.\n * @param {?Object=} opt_customParameters The optional OAuth custom parameters\n *     plain object.\n * @param {?Array<string>=} opt_additionalScopes The list of scope strings.\n * @param {?string=} opt_email The optional email.\n * @param {?string=} opt_sessionId The optional session ID.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.getAuthUri = function(\n    providerId,\n    continueUri,\n    opt_customParameters,\n    opt_additionalScopes,\n    opt_email,\n    opt_sessionId) {\n  // SAML provider request is constructed differently than OAuth requests.\n  var isSaml = fireauth.idp.isSaml(providerId);\n  var request = {\n    'identifier': opt_email,\n    'providerId': providerId,\n    'continueUri': continueUri,\n    'customParameter': opt_customParameters || {},\n    'oauthScope': fireauth.RpcHandler.getAdditionalScopes_(\n        providerId, opt_additionalScopes),\n    'sessionId': opt_sessionId\n  };\n  // Custom parameters and OAuth scopes should be ignored.\n  if (isSaml) {\n    delete request['customParameter'];\n    delete request['oauthScope'];\n  }\n  // When sessionId is provided, mobile flow (Cordova) is being used, force\n  // code flow and not implicit flow. All other providers use code flow by\n  // default.\n  if (opt_sessionId && providerId == fireauth.idp.ProviderId.GOOGLE) {\n    request['authFlowType'] = 'CODE_FLOW';\n  }\n  return this.invokeRpc(fireauth.RpcHandler.ApiMethod.GET_AUTH_URI,\n      request);\n};\n\n\n/**\n * Gets the list of IDPs that can be used to log in for the given identifier.\n * @param {string} identifier The identifier, such as an email address.\n * @return {!goog.Promise<!Array<string>>}\n */\nfireauth.RpcHandler.prototype.fetchProvidersForIdentifier =\n    function(identifier) {\n  // createAuthUri returns an error if continue URI is not http or https.\n  // For environments like Cordova, Chrome extensions, native frameworks, file\n  // systems, etc, use http://localhost as continue URL.\n  var continueUri = fireauth.util.isHttpOrHttps() ?\n      fireauth.util.getCurrentUrl() : 'http://localhost';\n  var request = {\n    'identifier': identifier,\n    'continueUri': continueUri\n  };\n  return this.invokeRpc(fireauth.RpcHandler.ApiMethod.CREATE_AUTH_URI, request)\n      .then(function(response) {\n        return response[fireauth.RpcHandler.AuthServerField.ALL_PROVIDERS] ||\n            [];\n      });\n};\n\n\n/**\n * Returns the list of sign in methods for the given identifier.\n * @param {string} identifier The identifier, such as an email address.\n * @return {!goog.Promise<!Array<string>>}\n */\nfireauth.RpcHandler.prototype.fetchSignInMethodsForIdentifier = function(\n    identifier) {\n  // createAuthUri returns an error if continue URI is not http or https.\n  // For environments like Cordova, Chrome extensions, native frameworks, file\n  // systems, etc, use http://localhost as continue URL.\n  var continueUri = fireauth.util.isHttpOrHttps() ?\n      fireauth.util.getCurrentUrl() :\n      'http://localhost';\n  var request = {\n    'identifier': identifier,\n    'continueUri': continueUri\n  };\n  return this.invokeRpc(fireauth.RpcHandler.ApiMethod.CREATE_AUTH_URI, request)\n      .then(function(response) {\n        return response[fireauth.RpcHandler.AuthServerField.SIGNIN_METHODS] ||\n            [];\n      });\n};\n\n\n/**\n * Gets the list of authorized domains for the specified project.\n * @return {!goog.Promise<!Array<string>>}\n */\nfireauth.RpcHandler.prototype.getAuthorizedDomains = function() {\n  return this.invokeRpc(fireauth.RpcHandler.ApiMethod.GET_PROJECT_CONFIG, {})\n      .then(function(response) {\n        return response[\n           fireauth.RpcHandler.AuthServerField.AUTHORIZED_DOMAINS] || [];\n      });\n};\n\n\n/**\n * Gets the reCAPTCHA parameters needed to render the project's provisioned\n * reCAPTCHA.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.getRecaptchaParam = function() {\n  return this.invokeRpc(fireauth.RpcHandler.ApiMethod.GET_RECAPTCHA_PARAM, {});\n};\n\n\n/**\n * Gets the list of authorized domains for the specified project.\n * @return {!goog.Promise<string>}\n */\nfireauth.RpcHandler.prototype.getDynamicLinkDomain = function() {\n  var request = {\n    'returnDynamicLink': true\n  };\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.RETURN_DYNAMIC_LINK, request);\n};\n\n\n/**\n * Checks if the provided iOS bundle ID belongs to the project as specified by\n * the API key.\n * @param {string} iosBundleId  The iOS bundle ID to check.\n * @return {!goog.Promise<void>}\n */\nfireauth.RpcHandler.prototype.isIosBundleIdValid = function(iosBundleId) {\n  var request = {\n    'iosBundleId': iosBundleId\n  };\n  // This will either resolve if the identifier is valid or throw INVALID_APP_ID\n  // if not.\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.GET_PROJECT_CONFIG, request)\n      .then(function(result) {\n        // Do not return anything.\n      });\n};\n\n\n/**\n * Checks if the provided Android package name belongs to the project as\n * specified by the API key.\n * @param {string} androidPackageName  The iOS bundle ID to check.\n * @param {?string=} opt_sha1Cert The optional SHA-1 Android cert to check.\n * @return {!goog.Promise<void>}\n */\nfireauth.RpcHandler.prototype.isAndroidPackageNameValid =\n    function(androidPackageName, opt_sha1Cert) {\n  var request = {\n    'androidPackageName': androidPackageName\n  };\n  // This is relevant for the native Android SDK flow.\n  // This will redirect to an FDL domain owned by GMScore instead of\n  // the developer's FDL domain as is done for Cordova apps.\n  if (!!opt_sha1Cert) {\n    request['sha1Cert'] = opt_sha1Cert;\n  }\n  // When no sha1Cert is passed, this will either resolve if the identifier is\n  // valid or throw INVALID_APP_ID if not.\n  // When sha1Cert is also passed, this will either resolve or fail with an\n  // INVALID_CERT_HASH error.\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.GET_PROJECT_CONFIG, request)\n      .then(function(result) {\n        // Do not return anything.\n      });\n};\n\n\n/**\n * Checks if the provided OAuth client ID belongs to the project as specified by\n * the API key.\n * @param {string} clientId The OAuth client ID to check.\n * @return {!goog.Promise<void>}\n */\nfireauth.RpcHandler.prototype.isOAuthClientIdValid = function(clientId) {\n  var request = {\n    'clientId': clientId\n  };\n  // This will either resolve if the client ID is valid or throw\n  // INVALID_OAUTH_CLIENT_ID if not.\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.GET_PROJECT_CONFIG, request)\n      .then(function(result) {\n        // Do not return anything.\n      });\n};\n\n\n/**\n * Requests getAccountInfo endpoint using an ID token.\n * @param {string} idToken The ID token.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.getAccountInfoByIdToken = function(idToken) {\n  var request = {'idToken': idToken};\n  return this.invokeRpc(fireauth.RpcHandler.ApiMethod.GET_ACCOUNT_INFO,\n      request);\n};\n\n\n/**\n * Validates a request to sign in with email and password.\n * @param {!Object} request\n * @private\n */\nfireauth.RpcHandler.validateVerifyCustomTokenRequest_ = function(request) {\n  if (!request['token']) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INVALID_CUSTOM_TOKEN);\n  }\n};\n\n\n/**\n * Verifies a custom token and returns a Promise that resolves with the ID\n * token.\n * @param {string} token The custom token.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.verifyCustomToken = function(token) {\n  var request = {'token': token};\n  return this.invokeRpc(fireauth.RpcHandler.ApiMethod.VERIFY_CUSTOM_TOKEN,\n      request);\n};\n\n\n/**\n * Validates a request to sign in with email and password.\n * @param {!Object} request\n * @private\n */\nfireauth.RpcHandler.validateVerifyPasswordRequest_ = function(request) {\n  fireauth.RpcHandler.validateRequestHasEmail_(request);\n  if (!request['password']) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INVALID_PASSWORD);\n  }\n};\n\n\n/**\n * Verifies a password and returns a Promise that resolves with the ID\n * token.\n * @param {string} email The email address.\n * @param {string} password The entered password.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.verifyPassword = function(email, password) {\n  var request = {\n    'email': email,\n    'password': password\n  };\n  return this.invokeRpc(fireauth.RpcHandler.ApiMethod.VERIFY_PASSWORD,\n      request);\n};\n\n\n/**\n * Verifies an email link OTP for sign-in and returns a Promise that resolves\n * with the ID token.\n * @param {string} email The email address.\n * @param {string} oobCode The email action OTP.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.emailLinkSignIn = function(email, oobCode) {\n  var request = {\n    'email': email,\n    'oobCode': oobCode\n  };\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.EMAIL_LINK_SIGNIN, request);\n};\n\n\n/**\n * Verifies an email link OTP for linking and returns a Promise that resolves\n * with the ID token.\n * @param {string} idToken The ID token.\n * @param {string} email The email address.\n * @param {string} oobCode The email action OTP.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.emailLinkSignInForLinking =\n    function(idToken, email, oobCode) {\n  var request = {\n    'idToken': idToken,\n    'email': email,\n    'oobCode': oobCode\n  };\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.EMAIL_LINK_SIGNIN_FOR_LINKING,\n      request);\n};\n\n\n/**\n * Validates a response that should contain an ID token.\n * If no ID token is available, it checks if a multi-factor pending credential\n * is available instead. In that case, it throws the MFA_REQUIRED error code.\n * @param {?Object} response The server response data.\n * @private\n */\nfireauth.RpcHandler.validateIdTokenResponse_ = function(response) {\n  if (!response[fireauth.RpcHandler.AuthServerField.ID_TOKEN]) {\n    // User could be a second factor user.\n    // When second factor is required, a pending credential is returned.\n    if (response[fireauth.RpcHandler.AuthServerField.MFA_PENDING_CREDENTIAL]) {\n      throw new fireauth.AuthError(\n          fireauth.authenum.Error.MFA_REQUIRED,\n          null,\n          goog.object.clone(response));\n    }\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n};\n\n\n/**\n * Validates a getRecaptchaParam response.\n * @param {?Object} response The server response data.\n * @private\n */\nfireauth.RpcHandler.validateGetRecaptchaParamResponse_ = function(response) {\n  // Both are required. This could change though.\n  if (!response[fireauth.RpcHandler.AuthServerField.RECAPTCHA_SITE_KEY]) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n};\n\n\n/**\n * Validates a request that sends the verification ID and code for a sign in/up\n * phone Auth flow.\n * @param {!Object} request The server request object.\n * @private\n */\nfireauth.RpcHandler.validateVerifyPhoneNumberRequest_ = function(request) {\n  // There are 2 cases here:\n  // case 1: sessionInfo and code\n  // case 2: phoneNumber and temporaryProof\n  if (request['phoneNumber'] || request['temporaryProof']) {\n    // Case 2. Both phoneNumber and temporaryProof should be set.\n    if (!request['phoneNumber'] || !request['temporaryProof']) {\n      throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n    }\n  } else {\n    // Otherwise it's case 1, so we expect sessionInfo and code.\n    if (!request['sessionInfo']) {\n      throw new fireauth.AuthError(\n          fireauth.authenum.Error.MISSING_SESSION_INFO);\n    }\n    if (!request['code']) {\n      throw new fireauth.AuthError(fireauth.authenum.Error.MISSING_CODE);\n    }\n  }\n};\n\n\n/**\n * Validates a request that sends the verification ID and code for a link/update\n * phone Auth flow.\n * @param {!Object} request The server request object.\n * @private\n */\nfireauth.RpcHandler.validateVerifyPhoneNumberLinkRequest_ = function(request) {\n  // idToken should be required here.\n  if (!request['idToken']) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n  // The other request parameters match the sign in flow.\n  fireauth.RpcHandler.validateVerifyPhoneNumberRequest_(request);\n};\n\n\n/**\n * Validates a request to create an email and password account.\n * @param {!Object} request\n * @private\n */\nfireauth.RpcHandler.validateCreateAccountRequest_ = function(request) {\n  fireauth.RpcHandler.validateRequestHasEmail_(request);\n  if (!request['password']) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.WEAK_PASSWORD);\n  }\n};\n\n\n/**\n * Validates a request to createAuthUri.\n * @param {!Object} request\n * @private\n */\nfireauth.RpcHandler.validateGetAuthUriRequest_ = function(request) {\n  if (!request['continueUri']) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.MISSING_CONTINUE_URI);\n  }\n  // Either a SAML or non SAML providerId must be provided.\n  if (!request['providerId']) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.INTERNAL_ERROR,\n        'A provider ID must be provided in the request.');\n  }\n};\n\n\n/**\n * Creates an email/password account. Returns a Promise that resolves with the\n * ID token.\n * @param {string} email The email address of the account.\n * @param {string} password The password.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.createAccount = function(email, password) {\n  var request = {\n    'email': email,\n    'password': password\n  };\n  return this.invokeRpc(fireauth.RpcHandler.ApiMethod.CREATE_ACCOUNT,\n      request);\n};\n\n\n/**\n * Signs in a user as anonymous. Returns a Promise that resolves with the\n * ID token.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.signInAnonymously = function() {\n  return this.invokeRpc(fireauth.RpcHandler.ApiMethod.SIGN_IN_ANONYMOUSLY, {});\n};\n\n\n/**\n * Deletes the user's account corresponding to the idToken given.\n * @param {string} idToken The idToken of the user.\n * @return {!goog.Promise<undefined>}\n */\nfireauth.RpcHandler.prototype.deleteAccount = function(idToken) {\n  var request = {\n    'idToken': idToken\n  };\n  return this.invokeRpc(fireauth.RpcHandler.ApiMethod.DELETE_ACCOUNT,\n      request);\n};\n\n\n/**\n * Requests setAccountInfo endpoint for updateEmail operation.\n * @param {string} idToken The ID token.\n * @param {string} newEmail The new email.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.updateEmail = function(idToken, newEmail) {\n  var request = {\n    'idToken': idToken,\n    'email': newEmail\n  };\n  return this.invokeRpc(fireauth.RpcHandler.ApiMethod.SET_ACCOUNT_INFO,\n      request);\n};\n\n\n/**\n * Validates a setAccountInfo request that updates the password.\n * @param {!Object} request\n * @private\n */\nfireauth.RpcHandler.validateSetAccountInfoSensitive_ = function(request) {\n  fireauth.RpcHandler.validateEmailIfPresent_(request);\n  if (!request['password']) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.WEAK_PASSWORD);\n  }\n};\n\n\n/**\n * Requests setAccountInfo endpoint for updatePassword operation.\n * @param {string} idToken The ID token.\n * @param {string} newPassword The new password.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.updatePassword = function(idToken, newPassword) {\n  var request = {\n    'idToken': idToken,\n    'password': newPassword\n  };\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.SET_ACCOUNT_INFO_SENSITIVE, request);\n};\n\n\n/**\n * Requests setAccountInfo endpoint to set the email and password. This can be\n * used to link an existing account to a new email and password account.\n * @param {string} idToken The ID token.\n * @param {string} newEmail The new email.\n * @param {string} newPassword The new password.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.updateEmailAndPassword = function(idToken,\n    newEmail, newPassword) {\n  var request = {\n    'idToken': idToken,\n    'email': newEmail,\n    'password': newPassword\n  };\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.SET_ACCOUNT_INFO_SENSITIVE, request);\n};\n\n\n/**\n * Maps the name of a field in the account info object to the backend enum\n * value, for deletion of profile fields.\n * @private {!Object<string, string>}\n */\nfireauth.RpcHandler.PROFILE_FIELD_TO_ENUM_NAME_ = {\n  'displayName': 'DISPLAY_NAME',\n  'photoUrl': 'PHOTO_URL'\n};\n\n\n/**\n * Updates the profile of the user. When resolved, promise returns a response\n * similar to that of getAccountInfo.\n * @param {string} idToken The ID token of the user whose profile is changing.\n * @param {!Object} profileData The new profile data.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.updateProfile = function(idToken, profileData) {\n  var data = {\n    'idToken': idToken\n  };\n  var fieldsToDelete = [];\n\n  // Copy over the relevant fields from profileData, or explicitly flag a field\n  // for deletion if null is passed as the value. Note that this currently only\n  // checks profileData to the first level.\n  goog.object.forEach(fireauth.RpcHandler.PROFILE_FIELD_TO_ENUM_NAME_,\n      function(enumName, fieldName) {\n        var fieldValue = profileData[fieldName];\n        if (fieldValue === null) {\n          // If null is explicitly provided, delete the field.\n          fieldsToDelete.push(enumName);\n        } else if (fieldName in profileData) {\n          // If the field is explicitly set, send it to the backend.\n          data[fieldName] = fieldValue;\n        }\n      });\n  if (fieldsToDelete.length) {\n    data['deleteAttribute'] = fieldsToDelete;\n  }\n  return this.invokeRpc(fireauth.RpcHandler.ApiMethod.SET_ACCOUNT_INFO, data);\n};\n\n\n/**\n * Validates a request for an email action code for password reset.\n * @param {!Object} request The getOobCode request data for password reset.\n * @private\n */\nfireauth.RpcHandler.validateOobCodeRequest_ = function(request) {\n  if (request['requestType'] !=\n          fireauth.RpcHandler.GetOobCodeRequestType.PASSWORD_RESET) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n  fireauth.RpcHandler.validateRequestHasEmail_(request);\n};\n\n\n/**\n * Validates a request for an email action for passwordless email sign-in.\n * @param {!Object} request The getOobCode request data for email sign-in.\n * @private\n */\nfireauth.RpcHandler.validateEmailSignInCodeRequest_ = function(request) {\n  if (request['requestType'] !=\n      fireauth.RpcHandler.GetOobCodeRequestType.EMAIL_SIGNIN) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n  fireauth.RpcHandler.validateRequestHasEmail_(request);\n};\n\n\n/**\n * Validates a request for an email action for email verification.\n * @param {!Object} request The getOobCode request data for email verification.\n * @private\n */\nfireauth.RpcHandler.validateEmailVerificationCodeRequest_ = function(request) {\n  if (request['requestType'] !=\n          fireauth.RpcHandler.GetOobCodeRequestType.VERIFY_EMAIL) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n};\n\n\n/**\n * Validates a request for an email action for email verification before update.\n * @param {!Object} request The getOobCode request data for email verification\n *     before update.\n * @private\n */\nfireauth.RpcHandler.validateEmailVerificationCodeBeforeUpdateRequest_ =\n    function(request) {\n  if (request['requestType'] !=\n          fireauth.RpcHandler.GetOobCodeRequestType.VERIFY_AND_CHANGE_EMAIL) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n};\n\n\n/**\n * Requests getOobCode endpoint for password reset, returns promise that\n * resolves with user's email.\n * @param {string} email The email account with the password to be reset.\n * @param {!Object} additionalRequestData Additional data to add to the request.\n * @return {!goog.Promise<string>}\n */\nfireauth.RpcHandler.prototype.sendPasswordResetEmail =\n    function(email, additionalRequestData) {\n  var request = {\n    'requestType': fireauth.RpcHandler.GetOobCodeRequestType.PASSWORD_RESET,\n    'email': email\n  };\n  // Extend the original request with the additional data.\n  goog.object.extend(request, additionalRequestData);\n  return this.invokeRpc(fireauth.RpcHandler.ApiMethod.GET_OOB_CODE, request);\n};\n\n\n/**\n * Requests getOobCode endpoint for passwordless email sign-in, returns promise\n * that resolves with user's email.\n * @param {string} email The email account to sign in with.\n * @param {!Object} additionalRequestData Additional data to add to the request.\n * @return {!goog.Promise<string>}\n */\nfireauth.RpcHandler.prototype.sendSignInLinkToEmail = function(\n    email, additionalRequestData) {\n  var request = {\n    'requestType': fireauth.RpcHandler.GetOobCodeRequestType.EMAIL_SIGNIN,\n    'email': email\n  };\n  // Extend the original request with the additional data.\n  goog.object.extend(request, additionalRequestData);\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.GET_EMAIL_SIGNIN_CODE, request);\n};\n\n\n/**\n * Requests getOobCode endpoint for email verification, returns promise that\n * resolves with user's email.\n * @param {string} idToken The idToken of the user confirming his email.\n * @param {!Object} additionalRequestData Additional data to add to the request.\n * @return {!goog.Promise<string>}\n */\nfireauth.RpcHandler.prototype.sendEmailVerification =\n    function(idToken, additionalRequestData) {\n  var request = {\n    'requestType': fireauth.RpcHandler.GetOobCodeRequestType.VERIFY_EMAIL,\n    'idToken': idToken\n  };\n  // Extend the original request with the additional data.\n  goog.object.extend(request, additionalRequestData);\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.GET_EMAIL_VERIFICATION_CODE, request);\n};\n\n\n/**\n * Requests getOobCode endpoint for email verification before updating the\n * email.\n * @param {string} idToken The idToken of the user updating his email.\n * @param {string} newEmail The new email.\n * @param {!Object} additionalRequestData Additional data to add to the request.\n * @return {!goog.Promise<void>}\n */\nfireauth.RpcHandler.prototype.verifyBeforeUpdateEmail =\n    function(idToken, newEmail, additionalRequestData) {\n  var request = {\n    'requestType':\n        fireauth.RpcHandler.GetOobCodeRequestType.VERIFY_AND_CHANGE_EMAIL,\n    'idToken': idToken,\n    'newEmail': newEmail\n  };\n  // Extend the original request with the additional data.\n  goog.object.extend(request, additionalRequestData);\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.GET_EMAIL_VERIFICATION_CODE_BEFORE_UPDATE,\n      request);\n};\n\n\n/**\n * Requests sendVerificationCode endpoint for verifying the user's ownership of\n * a phone number. It resolves with a sessionInfo (verificationId).\n * @param {!Object} request The verification request which contains a phone\n *     number and an assertion.\n * @return {!goog.Promise<string>}\n */\nfireauth.RpcHandler.prototype.sendVerificationCode = function(request) {\n  // In the future, we could support other types of assertions so for now,\n  // we are keeping the request an object.\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.SEND_VERIFICATION_CODE, request);\n};\n\n\n/**\n * Requests verifyPhoneNumber endpoint for sign in/sign up phone number\n * authentication flow and resolves with the STS token response.\n * @param {!Object} request The phone number ID and code to exchange for a\n *     Firebase Auth session.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.verifyPhoneNumber = function(request) {\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.VERIFY_PHONE_NUMBER, request);\n};\n\n\n/**\n * Requests verifyPhoneNumber endpoint for link/update phone number\n * authentication flow and resolves with the STS token response.\n * @param {!Object} request The phone number ID and code to exchange for a\n *     Firebase Auth session.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.verifyPhoneNumberForLinking = function(request) {\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.VERIFY_PHONE_NUMBER_FOR_LINKING, request);\n};\n\n\n/**\n * Validates a response to a phone number linking request.\n * @param {?Object} response The server response data.\n * @private\n */\nfireauth.RpcHandler.validateVerifyPhoneNumberForLinkingResponse_ =\n    function(response) {\n  if (response[fireauth.RpcHandler.AuthServerField.TEMPORARY_PROOF]) {\n    response['code'] = fireauth.authenum.Error.CREDENTIAL_ALREADY_IN_USE;\n    throw fireauth.AuthErrorWithCredential.fromPlainObject(response);\n  }\n\n  // If there's no temporary proof, then we expect the request to have\n  // succeeded and returned an ID token.\n  fireauth.RpcHandler.validateIdTokenResponse_(response);\n};\n\n\n/**\n * Requests verifyPhoneNumber endpoint for reauthenticating with a phone number\n * and resolves with the STS token response.\n * @param {!Object} request The phone number ID, code, and current ID token to\n *     exchange for a refreshed Firebase Auth session.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.verifyPhoneNumberForExisting = function(request) {\n  request['operation'] = 'REAUTH';\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.VERIFY_PHONE_NUMBER_FOR_EXISTING,\n      request);\n};\n\n\n/**\n * Validates a request for starting phone MFA enrollment.\n * @param {!Object} request The startPhoneMfaEnrollment request data.\n * @private\n */\nfireauth.RpcHandler.validateStartPhoneMfaEnrollmentRequest_ =\n    function(request) {\n  if (!request['phoneEnrollmentInfo']) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n  if (!request['phoneEnrollmentInfo']['phoneNumber']) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.MISSING_PHONE_NUMBER);\n  }\n  if (!request['phoneEnrollmentInfo']['recaptchaToken']) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.MISSING_APP_CREDENTIAL);\n  }\n};\n\n\n/**\n * Validates a response to a start phone MFA enrollment request.\n * @param {!Object} response The server response data.\n * @private\n */\nfireauth.RpcHandler.validateStartPhoneMfaEnrollmentResponse_ =\n    function(response) {\n  if (!response[fireauth.RpcHandler.AuthServerField.PHONE_SESSION_INFO] ||\n      !response[fireauth.RpcHandler.AuthServerField.PHONE_SESSION_INFO]\n          [fireauth.RpcHandler.AuthServerField.SESSION_INFO]) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n};\n\n\n/**\n * Requests startMfaEnrollment endpoint for verifying the user's ownership of\n * a phone number before enrolling to MFA. It resolves with a sessionInfo\n * (verificationId) string.\n * @param {!Object} request The enroll MFA request for phone.\n * @return {!goog.Promise<string>}\n */\nfireauth.RpcHandler.prototype.startPhoneMfaEnrollment = function(request) {\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.START_PHONE_MFA_ENROLLMENT, request)\n      .then(function(response) {\n        // Extract the sessionInfo(verificationId) from response.\n        return response[fireauth.RpcHandler.AuthServerField.PHONE_SESSION_INFO]\n            [fireauth.RpcHandler.AuthServerField.SESSION_INFO];\n      });\n};\n\n\n/**\n * Validates a request for finalizing phone MFA enrollment or sign-in.\n * @param {!Object} request The finalizePhoneMfaEnrollment or\n *     finalizePhoneMfaSignIn request data.\n * @private\n */\nfireauth.RpcHandler.validateFinalizePhoneMfaRequest_ = function(request) {\n  if (!request['phoneVerificationInfo']) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n  if (!request['phoneVerificationInfo']['sessionInfo']) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.MISSING_SESSION_INFO);\n  }\n  if (!request['phoneVerificationInfo']['code']) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.MISSING_CODE);\n  }\n};\n\n\n/**\n * Requests finalizeMfaEnrollment endpoint to finish the enrollment flow for\n * phone MFA. It resolves with the MFA token response.\n * @param {!Object} request The enroll MFA request for phone.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.finalizePhoneMfaEnrollment = function(request) {\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.FINALIZE_PHONE_MFA_ENROLLMENT, request);\n};\n\n\n/**\n * Validates a request for starting phone MFA sign-in.\n * @param {!Object} request The startPhoneMfaSignIn request data.\n * @private\n */\nfireauth.RpcHandler.validateStartPhoneMfaSignInRequest_ = function(request) {\n  if (!request['phoneSignInInfo'] ||\n      !request['phoneSignInInfo']['recaptchaToken']) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.MISSING_APP_CREDENTIAL);\n  }\n};\n\n\n/**\n * Validates a response to a start phone MFA sign-in request.\n * @param {!Object} response The server response data.\n * @private\n */\nfireauth.RpcHandler.validateStartPhoneMfaSignInResponse_ = function(response) {\n  if (!response[fireauth.RpcHandler.AuthServerField.PHONE_RESPONSE_INFO] ||\n      !response[fireauth.RpcHandler.AuthServerField.PHONE_RESPONSE_INFO]\n          [fireauth.RpcHandler.AuthServerField.SESSION_INFO]) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n};\n\n\n/**\n * Requests startMfaSignIn endpoint for verifying the user's ownership of\n * a phone number before signing in to MFA. It resolves with a sessionInfo\n * (verificationId) string.\n * @param {!Object} request The sign in MFA request for phone.\n * @return {!goog.Promise<string>}\n */\nfireauth.RpcHandler.prototype.startPhoneMfaSignIn = function(request) {\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.START_PHONE_MFA_SIGN_IN, request)\n      .then(function(response) {\n        // Extract the sessionInfo(verificationId) from response.\n        return response[fireauth.RpcHandler.AuthServerField.PHONE_RESPONSE_INFO]\n            [fireauth.RpcHandler.AuthServerField.SESSION_INFO];\n      });\n};\n\n\n/**\n * Requests finalizeMfaSignIn endpoint to finish the sign-in flow for\n * phone MFA. It resolves with the MFA token response.\n * @param {!Object} request The sign in MFA request for phone.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.finalizePhoneMfaSignIn = function(request) {\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.FINALIZE_PHONE_MFA_SIGN_IN, request);\n};\n\n\n/**\n * Validates the response for unenrolling a second factor. If the user is still\n * considered signed in, the endpoint returns new tokens. However, if the\n * user session is revoked no tokens will be returned.\n * @param {!Object} response The server response data.\n * @private\n */\nfireauth.RpcHandler.validateWithdrawMfaResponse_ = function(response) {\n  var hasIdToken = !!response[fireauth.RpcHandler.AuthServerField.ID_TOKEN];\n  var hasRefreshToken =\n      !!response[fireauth.RpcHandler.AuthServerField.REFRESH_TOKEN];\n\n  if (hasIdToken ^ hasRefreshToken) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n};\n\n\n/**\n * Requests the withdraw endpoint to unenroll a second factor. Returns new\n * tokens if the user is still considered signed in or no tokens if the user\n * session is revoked and the user is being signed out.\n * @param {string} idToken The ID token.\n * @param {string} mfaEnrollmentId The MFA enrollment ID.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.withdrawMfa = function(idToken, mfaEnrollmentId) {\n  var request = {\n    'idToken': idToken,\n    'mfaEnrollmentId': mfaEnrollmentId\n  };\n  return this.invokeRpc(fireauth.RpcHandler.ApiMethod.WITHDRAW_MFA, request);\n};\n\n\n/**\n * The custom error map for reauth with verifyPhoneNumber.\n * @private {!fireauth.RpcHandler.ServerErrorMap}\n */\nfireauth.RpcHandler.verifyPhoneNumberForExistingErrorMap_ = {};\n\n// For most RPCs, the backend error USER_NOT_FOUND means that the sent STS\n// token is invalid. However, for this specific case, USER_NOT_FOUND actually\n// means that the sent credential is invalid.\nfireauth.RpcHandler.verifyPhoneNumberForExistingErrorMap_[\n  fireauth.RpcHandler.ServerError.USER_NOT_FOUND] =\n    fireauth.authenum.Error.USER_DELETED;\n\n\n/**\n * Validates a request to deleteLinkedAccounts.\n * @param {?Object} request\n * @private\n */\nfireauth.RpcHandler.validateDeleteLinkedAccountsRequest_ = function(request) {\n  if (!Array.isArray(request['deleteProvider'])) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n};\n\n\n/**\n * Updates the providers for the account associated with the idToken.\n * @param {string} idToken The ID token.\n * @param {!Array<string>} providersToDelete The array of providers to delete.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.deleteLinkedAccounts =\n    function(idToken, providersToDelete) {\n  var request = {\n    'idToken': idToken,\n    'deleteProvider': providersToDelete\n  };\n  return this.invokeRpc(fireauth.RpcHandler.ApiMethod.DELETE_LINKED_ACCOUNTS,\n      request);\n};\n\n\n/**\n * Validates a verifyAssertion request.\n * @param {?Object} request The verifyAssertion request data.\n * @private\n */\nfireauth.RpcHandler.validateVerifyAssertionRequest_ = function(request) {\n  // Either (requestUri and sessionId), (requestUri and postBody) or\n  // (requestUri and pendingToken) are required.\n  if (!request[fireauth.RpcHandler.AuthServerField.REQUEST_URI] ||\n      (!request[fireauth.RpcHandler.AuthServerField.SESSION_ID] &&\n       !request[fireauth.RpcHandler.AuthServerField.POST_BODY] &&\n       !request[fireauth.RpcHandler.AuthServerField.PENDING_TOKEN])) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n};\n\n\n/**\n * Processes the verifyAssertion response and injects the same raw nonce\n * if available in request.\n * @param {!Object} request The verifyAssertion request data.\n * @param {!Object} response The original verifyAssertion response data.\n * @return {!Object} The modified verifyAssertion response.\n * @private\n */\nfireauth.RpcHandler.processVerifyAssertionResponse_ =\n    function(request, response) {\n  // This makes it possible for OIDC providers to:\n  // 1. Initialize an OIDC Auth credential on successful response.\n  // 2. Initialize an OIDC Auth credential within the recovery error.\n\n  // When request has sessionId and response has OIDC ID token and no pending\n  // token, a credential with raw nonce and OIDC ID token needs to be returned.\n  if (response[fireauth.RpcHandler.AuthServerField.OAUTH_ID_TOKEN] &&\n      response[fireauth.RpcHandler.AuthServerField.PROVIDER_ID] &&\n      response[fireauth.RpcHandler.AuthServerField.PROVIDER_ID]\n          .indexOf(fireauth.constants.OIDC_PREFIX) == 0 &&\n      // Use pendingToken instead of idToken and rawNonce when available.\n      !response[fireauth.RpcHandler.AuthServerField.PENDING_TOKEN]) {\n    if (request[fireauth.RpcHandler.AuthServerField.SESSION_ID]) {\n      // For full OAuth flow, the nonce is in the session ID.\n      response[fireauth.RpcHandler.InjectedResponseField.NONCE] =\n          request[fireauth.RpcHandler.AuthServerField.SESSION_ID];\n    } else if (request[fireauth.RpcHandler.AuthServerField.POST_BODY]) {\n      // For credential flow, the nonce is in the postBody nonce field.\n      var queryData = new goog.Uri.QueryData(\n          request[fireauth.RpcHandler.AuthServerField.POST_BODY]);\n      if (queryData.containsKey(\n              fireauth.RpcHandler.InjectedResponseField.NONCE)) {\n        response[fireauth.RpcHandler.InjectedResponseField.NONCE] =\n            queryData.get(fireauth.RpcHandler.InjectedResponseField.NONCE);\n      }\n    }\n  }\n  return response;\n};\n\n\n/**\n * Validates a response from verifyAssertionForExisting.\n * @param {?Object} response The verifyAssertionForExisting response data.\n * @private\n */\nfireauth.RpcHandler.validateVerifyAssertionForExistingResponse_ =\n    function(response) {\n  // When returnIdpCredential is set to true and the account is new, no error\n  // is thrown but an errorMessage is added to the response. No idToken is\n  // passed.\n  if (response[fireauth.RpcHandler.AuthServerField.ERROR_MESSAGE] &&\n      response[fireauth.RpcHandler.AuthServerField.ERROR_MESSAGE] ==\n          fireauth.RpcHandler.ServerError.USER_NOT_FOUND) {\n    // This corresponds to user-not-found.\n    throw new fireauth.AuthError(fireauth.authenum.Error.USER_DELETED);\n  } else if (response[fireauth.RpcHandler.AuthServerField.ERROR_MESSAGE]) {\n    // Construct developer facing error message from server code in errorMessage\n    // field.\n    throw fireauth.RpcHandler.getDeveloperErrorFromCode_(\n        response[fireauth.RpcHandler.AuthServerField.ERROR_MESSAGE]);\n  }\n  // Need confirmation should not be returned when do not create new user flag\n  // is set.\n  // Validate if ID token or multi-factor pending credential is available.\n  fireauth.RpcHandler.validateIdTokenResponse_(response);\n};\n\n\n/**\n * Validates a response from verifyAssertion.\n * @param {?Object} response The verifyAssertion response data.\n * @private\n */\nfireauth.RpcHandler.validateVerifyAssertionResponse_ = function(response) {\n  var error = null;\n  if (response[fireauth.RpcHandler.AuthServerField.NEED_CONFIRMATION]) {\n    // Account linking required, previously logged in to another account\n    // with same email. User must authenticate they are owners of the\n    // first account.\n    // If enough info for Auth linking error, throw an instance of Auth linking\n    // error. This will be used by developer after reauthenticating with email\n    // provided by error to link using the credentials in Auth linking error.\n    // If missing information, return regular Auth error.\n    response['code'] = fireauth.authenum.Error.NEED_CONFIRMATION;\n    error = fireauth.AuthErrorWithCredential.fromPlainObject(response);\n  } else if (response[fireauth.RpcHandler.AuthServerField.ERROR_MESSAGE] ==\n             fireauth.RpcHandler.ServerError.FEDERATED_USER_ID_ALREADY_LINKED) {\n    // When FEDERATED_USER_ID_ALREADY_LINKED returned in error message, auth\n    // credential and email will also be returned, throw relevant error in that\n    // case.\n    // In this case the developer needs to signInWithCredential to the returned\n    // credentials.\n    response['code'] = fireauth.authenum.Error.CREDENTIAL_ALREADY_IN_USE;\n    error = fireauth.AuthErrorWithCredential.fromPlainObject(response);\n  } else if (response[fireauth.RpcHandler.AuthServerField.ERROR_MESSAGE] ==\n             fireauth.RpcHandler.ServerError.EMAIL_EXISTS) {\n    // When EMAIL_EXISTS returned in error message, Auth credential and email\n    // will also be returned, throw relevant error in that case.\n    // In this case, the developers needs to sign in the user to the original\n    // owner of the account and then link to the returned credential here.\n    response['code'] = fireauth.authenum.Error.EMAIL_EXISTS;\n    error = fireauth.AuthErrorWithCredential.fromPlainObject(response);\n  } else if (response[fireauth.RpcHandler.AuthServerField.ERROR_MESSAGE]) {\n    // Construct developer facing error message from server code in errorMessage\n    // field.\n    error = fireauth.RpcHandler.getDeveloperErrorFromCode_(\n        response[fireauth.RpcHandler.AuthServerField.ERROR_MESSAGE]);\n  }\n  // If error found, throw it.\n  if (error) {\n    throw error;\n  }\n  // Validate if ID token or multi-factor pending credential is available.\n  fireauth.RpcHandler.validateIdTokenResponse_(response);\n};\n\n\n/**\n * Validates a verifyAssertion with linking request.\n * @param {?Object} request The verifyAssertion request data.\n * @private\n */\nfireauth.RpcHandler.validateVerifyAssertionLinkRequest_ = function(request) {\n  // idToken with either (requestUri and sessionId) or (requestUri and postBody)\n  // are required.\n  fireauth.RpcHandler.validateVerifyAssertionRequest_(request);\n  if (!request['idToken']) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n};\n\n\n/**\n * @typedef {{\n *   autoCreate: (boolean|undefined),\n *   requestUri: string,\n *   postBody: (?string|undefined),\n *   pendingIdToken: (?string|undefined),\n *   sessionId: (?string|undefined),\n *   idToken: (?string|undefined),\n *   returnIdpCredential: (boolean|undefined),\n *   tenantId: (?string|undefined)\n * }}\n */\nfireauth.RpcHandler.VerifyAssertionData;\n\n\n/**\n * Requests verifyAssertion endpoint. When resolved, promise returns the whole\n * response.\n * @param {!fireauth.RpcHandler.VerifyAssertionData} request\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.verifyAssertion = function(request) {\n  // Force Auth credential to be returned on the following errors:\n  // FEDERATED_USER_ID_ALREADY_LINKED\n  // EMAIL_EXISTS\n  request['returnIdpCredential'] = true;\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.VERIFY_ASSERTION,\n      request);\n};\n\n\n/**\n * Requests verifyAssertion endpoint for federated account linking. When\n * resolved, promise returns the whole response.\n * @param {!fireauth.RpcHandler.VerifyAssertionData} request\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.verifyAssertionForLinking = function(request) {\n  // Force Auth credential to be returned on the following errors:\n  // FEDERATED_USER_ID_ALREADY_LINKED\n  // EMAIL_EXISTS\n  request['returnIdpCredential'] = true;\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.VERIFY_ASSERTION_FOR_LINKING,\n      request);\n};\n\n\n/**\n * Requests verifyAssertion endpoint for an existing federated account. When\n * resolved, promise returns the whole response. If not existing, a\n * user-not-found error is thrown.\n * @param {!fireauth.RpcHandler.VerifyAssertionData} request\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.verifyAssertionForExisting = function(request) {\n  // Since we are setting returnIdpCredential to true, a response will be\n  // returned even though the account doesn't exist but an error message is\n  // appended with value set to USER_NOT_FOUND. If this flag is not passed, only\n  // the USER_NOT_FOUND error is thrown without any response.\n  request['returnIdpCredential'] = true;\n  // Do not create a new account if the user doesn't exist.\n  request['autoCreate'] = false;\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.VERIFY_ASSERTION_FOR_EXISTING,\n      request);\n};\n\n\n/**\n * Validates a request that should contain an action code.\n * @param {!Object} request\n * @private\n */\nfireauth.RpcHandler.validateApplyActionCodeRequest_ = function(request) {\n  if (!request['oobCode']) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INVALID_OOB_CODE);\n  }\n};\n\n\n/**\n * Validates that a checkActionCode response contains the email and requestType\n * fields.\n * @param {!Object} response The raw response returned by the server.\n * @private\n */\nfireauth.RpcHandler.validateCheckActionCodeResponse_ = function(response) {\n  // If the code is invalid, usually a clear error would be returned.\n  // In this case, something unexpected happened.\n  // Email could be empty only if the request type is EMAIL_SIGNIN.\n  var operation = response['requestType'];\n  if (!operation ||\n      (!response['email'] && operation != 'EMAIL_SIGNIN' &&\n       operation != 'VERIFY_AND_CHANGE_EMAIL')) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n};\n\n\n/**\n * Requests resetPassword endpoint for password reset, returns promise that\n * resolves with user's email.\n * @param {string} code The email action code to confirm for password reset.\n * @param {string} newPassword The new password.\n * @return {!goog.Promise<string>}\n */\nfireauth.RpcHandler.prototype.confirmPasswordReset =\n    function(code, newPassword) {\n  var request = {\n    'oobCode': code,\n    'newPassword': newPassword\n  };\n  return this.invokeRpc(fireauth.RpcHandler.ApiMethod.RESET_PASSWORD, request);\n};\n\n\n/**\n * Checks the validity of an email action code and returns the response\n * received.\n * @param {string} code The email action code to check.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.RpcHandler.prototype.checkActionCode = function(code) {\n  var request = {\n    'oobCode': code\n  };\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.CHECK_ACTION_CODE, request);\n};\n\n\n/**\n * Applies an out-of-band email action code, such as an email verification code.\n * @param {string} code The email action code.\n * @return {!goog.Promise<string>} A promise that resolves with the user's\n *     email.\n */\nfireauth.RpcHandler.prototype.applyActionCode = function(code) {\n  var request = {\n    'oobCode': code\n  };\n  return this.invokeRpc(\n      fireauth.RpcHandler.ApiMethod.APPLY_OOB_CODE, request);\n};\n\n\n/**\n * The specification of an RPC call. The fields are:\n * <ul>\n * <li>cachebuster: defines whether to send a unique string with request to\n *     force the backend to return an uncached response to request.\n * <li>customErrorMap: A map of backend error codes to client-side errors.\n *     Any entries set here override the default handling of the backend error\n *     code.\n * <li>endpoint: defines the backend endpoint to call.\n * <li>httpMethod: defines the HTTP method to use, defaulting to POST if not\n *     specified.\n * <li>requestRequiredFields: an array of the fields that are required in the\n *     request. The RPC call will fail with an INTERNAL_ERROR error if a\n *     required field is not present or if it is null, undefined, or the empty\n *     string.\n * <li>requestValidator: a function that takes in the request object and throws\n *     an error if the request is invalid.\n * <li>responsePreprocessor: a function to modify the response before running\n *     validation. The function takes in the request and response object.\n * <li>responseValidator: a function that takes in the response object and\n *     throws an error if the response is invalid.\n * <li>responseField: the field of the response object that will be returned\n *     from the RPC call. If no field is specified, the entire response object\n *     will be returned.\n * <li>returnSecureToken: Set to true to explicitly request STS tokens instead\n *     of legacy Google Identity Toolkit tokens from the backend.\n * <li>requireTenantId: Set to true to send tenant ID to backend in the request.\n * <li>useIdentityPlatformEndpoint: Whether to use new identity platform\n *     endpoints. The default is false.\n * </ul>\n * @typedef {{\n *   cachebuster: (boolean|undefined),\n *   customErrorMap: (!fireauth.RpcHandler.ServerErrorMap|undefined),\n *   endpoint: string,\n *   httpMethod: (!fireauth.RpcHandler.HttpMethod|undefined),\n *   requestRequiredFields: (!Array<string>|undefined),\n *   requestValidator: (function(!Object):void|undefined),\n *   responsePreprocessor: ((function(!Object, !Object):!Object)|undefined),\n *   responseValidator: (function(!Object):void|undefined),\n *   responseField: (string|undefined),\n *   returnSecureToken: (boolean|undefined),\n *   requireTenantId: (boolean|undefined),\n *   useIdentityPlatformEndpoint: (boolean|undefined)\n * }}\n */\nfireauth.RpcHandler.ApiMethodHandler;\n\n\n/**\n * The specifications for the backend API methods.\n * @enum {!fireauth.RpcHandler.ApiMethodHandler}\n */\nfireauth.RpcHandler.ApiMethod = {\n  APPLY_OOB_CODE: {\n    endpoint: 'setAccountInfo',\n    requestValidator: fireauth.RpcHandler.validateApplyActionCodeRequest_,\n    responseField: fireauth.RpcHandler.AuthServerField.EMAIL,\n    requireTenantId: true\n  },\n  CHECK_ACTION_CODE: {\n    endpoint: 'resetPassword',\n    requestValidator: fireauth.RpcHandler.validateApplyActionCodeRequest_,\n    responseValidator: fireauth.RpcHandler.validateCheckActionCodeResponse_,\n    requireTenantId: true\n  },\n  CREATE_ACCOUNT: {\n    endpoint: 'signupNewUser',\n    requestValidator: fireauth.RpcHandler.validateCreateAccountRequest_,\n    responseValidator: fireauth.RpcHandler.validateIdTokenResponse_,\n    returnSecureToken: true,\n    requireTenantId: true\n  },\n  CREATE_AUTH_URI: {\n    endpoint: 'createAuthUri',\n    requireTenantId: true\n  },\n  DELETE_ACCOUNT: {\n    endpoint: 'deleteAccount',\n    requestRequiredFields: ['idToken']\n  },\n  DELETE_LINKED_ACCOUNTS: {\n    endpoint: 'setAccountInfo',\n    requestRequiredFields: ['idToken', 'deleteProvider'],\n    requestValidator: fireauth.RpcHandler.validateDeleteLinkedAccountsRequest_\n  },\n  EMAIL_LINK_SIGNIN: {\n    endpoint: 'emailLinkSignin',\n    requestRequiredFields: ['email', 'oobCode'],\n    requestValidator: fireauth.RpcHandler.validateRequestHasEmail_,\n    responseValidator: fireauth.RpcHandler.validateIdTokenResponse_,\n    returnSecureToken: true,\n    requireTenantId: true\n  },\n  EMAIL_LINK_SIGNIN_FOR_LINKING: {\n    endpoint: 'emailLinkSignin',\n    requestRequiredFields: ['idToken', 'email', 'oobCode'],\n    requestValidator: fireauth.RpcHandler.validateRequestHasEmail_,\n    responseValidator: fireauth.RpcHandler.validateIdTokenResponse_,\n    returnSecureToken: true\n  },\n  FINALIZE_PHONE_MFA_ENROLLMENT: {\n    endpoint: 'accounts/mfaEnrollment:finalize',\n    requestRequiredFields: ['idToken', 'phoneVerificationInfo'],\n    requestValidator:\n        fireauth.RpcHandler.validateFinalizePhoneMfaRequest_,\n    responseValidator: fireauth.RpcHandler.validateIdTokenResponse_,\n    requireTenantId: true,\n    useIdentityPlatformEndpoint: true\n  },\n  FINALIZE_PHONE_MFA_SIGN_IN: {\n    endpoint: 'accounts/mfaSignIn:finalize',\n    requestRequiredFields: ['mfaPendingCredential', 'phoneVerificationInfo'],\n    requestValidator:\n        fireauth.RpcHandler.validateFinalizePhoneMfaRequest_,\n    responseValidator: fireauth.RpcHandler.validateIdTokenResponse_,\n    requireTenantId: true,\n    useIdentityPlatformEndpoint: true\n  },\n  GET_ACCOUNT_INFO: {\n    endpoint: 'getAccountInfo'\n  },\n  GET_AUTH_URI: {\n    endpoint: 'createAuthUri',\n    requestValidator: fireauth.RpcHandler.validateGetAuthUriRequest_,\n    responseValidator: fireauth.RpcHandler.validateGetAuthResponse_,\n    requireTenantId: true\n  },\n  GET_EMAIL_SIGNIN_CODE: {\n    endpoint: 'getOobConfirmationCode',\n    requestRequiredFields: ['requestType'],\n    requestValidator: fireauth.RpcHandler.validateEmailSignInCodeRequest_,\n    responseField: fireauth.RpcHandler.AuthServerField.EMAIL,\n    requireTenantId: true\n  },\n  GET_EMAIL_VERIFICATION_CODE: {\n    endpoint: 'getOobConfirmationCode',\n    requestRequiredFields: ['idToken', 'requestType'],\n    requestValidator: fireauth.RpcHandler.validateEmailVerificationCodeRequest_,\n    responseField: fireauth.RpcHandler.AuthServerField.EMAIL,\n    requireTenantId: true\n  },\n  GET_EMAIL_VERIFICATION_CODE_BEFORE_UPDATE: {\n    endpoint: 'getOobConfirmationCode',\n    requestRequiredFields: ['idToken', 'newEmail', 'requestType'],\n    requestValidator:\n        fireauth.RpcHandler.validateEmailVerificationCodeBeforeUpdateRequest_,\n    responseField: fireauth.RpcHandler.AuthServerField.EMAIL,\n    requireTenantId: true\n  },\n  GET_OOB_CODE: {\n    endpoint: 'getOobConfirmationCode',\n    requestRequiredFields: ['requestType'],\n    requestValidator: fireauth.RpcHandler.validateOobCodeRequest_,\n    responseField: fireauth.RpcHandler.AuthServerField.EMAIL,\n    requireTenantId: true\n  },\n  GET_PROJECT_CONFIG: {\n    // Microsoft edge caching bug. There are two getProjectConfig API calls,\n    // first from top level window and then from iframe. The second call has a\n    // response of 304 which means it's a cached response. We suspect the call\n    // from iframe is reusing the response from the first call and checks the\n    // allowed origin in the cached response, which only contains the domain for\n    // the top level window.\n    cachebuster: true,\n    endpoint: 'getProjectConfig',\n    httpMethod: fireauth.RpcHandler.HttpMethod.GET\n  },\n  GET_RECAPTCHA_PARAM: {\n    cachebuster: true,\n    endpoint: 'getRecaptchaParam',\n    httpMethod: fireauth.RpcHandler.HttpMethod.GET,\n    responseValidator: fireauth.RpcHandler.validateGetRecaptchaParamResponse_\n  },\n  RESET_PASSWORD: {\n    endpoint: 'resetPassword',\n    requestValidator: fireauth.RpcHandler.validateApplyActionCodeRequest_,\n    responseField: fireauth.RpcHandler.AuthServerField.EMAIL,\n    requireTenantId: true\n  },\n  RETURN_DYNAMIC_LINK: {\n    cachebuster: true,\n    endpoint: 'getProjectConfig',\n    httpMethod: fireauth.RpcHandler.HttpMethod.GET,\n    responseField: fireauth.RpcHandler.AuthServerField.DYNAMIC_LINKS_DOMAIN\n  },\n  SEND_VERIFICATION_CODE: {\n    endpoint: 'sendVerificationCode',\n    // Currently only reCAPTCHA tokens supported.\n    requestRequiredFields: ['phoneNumber', 'recaptchaToken'],\n    responseField: fireauth.RpcHandler.AuthServerField.SESSION_INFO,\n    requireTenantId: true\n  },\n  SET_ACCOUNT_INFO: {\n    endpoint: 'setAccountInfo',\n    requestRequiredFields: ['idToken'],\n    requestValidator: fireauth.RpcHandler.validateEmailIfPresent_,\n    returnSecureToken: true // Maybe updating email will invalidate token in the\n                            // future, this will prevent breaking the client.\n  },\n  SET_ACCOUNT_INFO_SENSITIVE: {\n    endpoint: 'setAccountInfo',\n    requestRequiredFields: ['idToken'],\n    requestValidator: fireauth.RpcHandler.validateSetAccountInfoSensitive_,\n    responseValidator: fireauth.RpcHandler.validateIdTokenResponse_,\n    returnSecureToken: true // Updating password will send back new sts tokens.\n  },\n  SIGN_IN_ANONYMOUSLY: {\n    endpoint: 'signupNewUser',\n    responseValidator: fireauth.RpcHandler.validateIdTokenResponse_,\n    returnSecureToken: true,\n    requireTenantId: true\n  },\n  START_PHONE_MFA_ENROLLMENT: {\n    endpoint: 'accounts/mfaEnrollment:start',\n    requestRequiredFields: ['idToken', 'phoneEnrollmentInfo'],\n    requestValidator:\n        fireauth.RpcHandler.validateStartPhoneMfaEnrollmentRequest_,\n    responseValidator:\n        fireauth.RpcHandler.validateStartPhoneMfaEnrollmentResponse_,\n    requireTenantId: true,\n    useIdentityPlatformEndpoint: true\n  },\n  START_PHONE_MFA_SIGN_IN: {\n    endpoint: 'accounts/mfaSignIn:start',\n    requestRequiredFields: ['mfaPendingCredential', 'mfaEnrollmentId',\n                            'phoneSignInInfo'],\n    requestValidator:\n        fireauth.RpcHandler.validateStartPhoneMfaSignInRequest_,\n    responseValidator:\n        fireauth.RpcHandler.validateStartPhoneMfaSignInResponse_,\n    requireTenantId: true,\n    useIdentityPlatformEndpoint: true\n  },\n  VERIFY_ASSERTION: {\n    endpoint: 'verifyAssertion',\n    requestValidator: fireauth.RpcHandler.validateVerifyAssertionRequest_,\n    responsePreprocessor: fireauth.RpcHandler.processVerifyAssertionResponse_,\n    responseValidator: fireauth.RpcHandler.validateVerifyAssertionResponse_,\n    returnSecureToken: true,\n    // Tenant ID is required for this endpoint. But for\n    // signInWithRedirect/Popup APIs, to make createAuthUri call and\n    // verifyAssertion call atomic, the tenant ID on RPC handler will be\n    // overridden by the tenant ID passed directly from the\n    // request, which is retrieved from Auth event. For signInWithCredential\n    // API, the tenant ID will still be retrieved from the RPC handler.\n    requireTenantId: true\n  },\n  VERIFY_ASSERTION_FOR_EXISTING: {\n    endpoint: 'verifyAssertion',\n    requestValidator: fireauth.RpcHandler.validateVerifyAssertionRequest_,\n    responsePreprocessor: fireauth.RpcHandler.processVerifyAssertionResponse_,\n    responseValidator:\n        fireauth.RpcHandler.validateVerifyAssertionForExistingResponse_,\n    returnSecureToken: true,\n    // Tenant ID is required for this endpoint. But for\n    // reauthenticateWithRedirect/Popup APIs, to make createAuthUri call and\n    // verifyAssertion call atomic, the tenant ID on RPC handler will be\n    // overridden by the tenant ID passed directly from the\n    // request, which is retrieved from Auth event. For\n    // reauthenticateWithCredential API, the tenant ID will still be retrieved\n    // from the RPC handler.\n    requireTenantId: true\n  },\n  VERIFY_ASSERTION_FOR_LINKING: {\n    endpoint: 'verifyAssertion',\n    requestValidator: fireauth.RpcHandler.validateVerifyAssertionLinkRequest_,\n    responsePreprocessor: fireauth.RpcHandler.processVerifyAssertionResponse_,\n    responseValidator: fireauth.RpcHandler.validateVerifyAssertionResponse_,\n    returnSecureToken: true\n  },\n  VERIFY_CUSTOM_TOKEN: {\n    endpoint: 'verifyCustomToken',\n    requestValidator: fireauth.RpcHandler.validateVerifyCustomTokenRequest_,\n    responseValidator: fireauth.RpcHandler.validateIdTokenResponse_,\n    returnSecureToken: true,\n    requireTenantId: true\n  },\n  VERIFY_PASSWORD: {\n    endpoint: 'verifyPassword',\n    requestValidator: fireauth.RpcHandler.validateVerifyPasswordRequest_,\n    responseValidator: fireauth.RpcHandler.validateIdTokenResponse_,\n    returnSecureToken: true,\n    requireTenantId: true\n  },\n  VERIFY_PHONE_NUMBER: {\n    endpoint: 'verifyPhoneNumber',\n    requestValidator: fireauth.RpcHandler.validateVerifyPhoneNumberRequest_,\n    responseValidator: fireauth.RpcHandler.validateIdTokenResponse_,\n    requireTenantId: true\n  },\n  VERIFY_PHONE_NUMBER_FOR_LINKING: {\n    endpoint: 'verifyPhoneNumber',\n    requestValidator: fireauth.RpcHandler.validateVerifyPhoneNumberLinkRequest_,\n    responseValidator:\n        fireauth.RpcHandler.validateVerifyPhoneNumberForLinkingResponse_\n  },\n  VERIFY_PHONE_NUMBER_FOR_EXISTING: {\n    customErrorMap: fireauth.RpcHandler.verifyPhoneNumberForExistingErrorMap_,\n    endpoint: 'verifyPhoneNumber',\n    requestValidator: fireauth.RpcHandler.validateVerifyPhoneNumberRequest_,\n    responseValidator: fireauth.RpcHandler.validateIdTokenResponse_,\n    requireTenantId: true\n  },\n  WITHDRAW_MFA: {\n    endpoint: 'accounts/mfaEnrollment:withdraw',\n    requestRequiredFields: ['idToken', 'mfaEnrollmentId'],\n    responseValidator: fireauth.RpcHandler.validateWithdrawMfaResponse_,\n    requireTenantId: true,\n    useIdentityPlatformEndpoint: true\n  }\n};\n\n\n/**\n * @const {string} The parameter to send to the backend to specify that the\n *     client accepts STS tokens directly from Firebear backends.\n * @private\n */\nfireauth.RpcHandler.USE_STS_TOKEN_PARAM_ = 'returnSecureToken';\n\n\n/**\n * @const {string} The parameter to send to the backend to specify the tenant\n *     ID.\n * @private\n */\nfireauth.RpcHandler.TENANT_ID_PARAM_ = 'tenantId';\n\n\n/**\n * Invokes an RPC method according to the specification defined by\n * {@code fireauth.RpcHandler.ApiMethod}.\n * @param {!fireauth.RpcHandler.ApiMethod} method The method to invoke.\n * @param {!Object} request The input data to the method.\n * @return {!goog.Promise} A promise that resolves with the results of the RPC.\n *     The format of the results can be modified in\n *     {@code fireauth.RpcHandler.ApiMethod}.\n */\nfireauth.RpcHandler.prototype.invokeRpc = function(method, request) {\n  if (!fireauth.object.hasNonEmptyFields(\n      request, method.requestRequiredFields)) {\n    return goog.Promise.reject(new fireauth.AuthError(\n        fireauth.authenum.Error.INTERNAL_ERROR));\n  }\n\n  var useIdentityPlatformEndpoint = !!method.useIdentityPlatformEndpoint;\n  var httpMethod = method.httpMethod || fireauth.RpcHandler.HttpMethod.POST;\n  var self = this;\n  var response;\n  return goog.Promise.resolve(request)\n      .then(method.requestValidator)\n      .then(function() {\n        if (method.returnSecureToken) {\n          // Signal that the client accepts STS tokens, for the legacy Google\n          // Identity Toolkit token to STS token migration.\n          request[fireauth.RpcHandler.USE_STS_TOKEN_PARAM_] = true;\n        }\n        // If tenant ID is explicitly passed in the request, it will override\n        // the tenant ID on RPC handler.\n        if (method.requireTenantId && self.tenantId_ &&\n            (typeof request[fireauth.RpcHandler.TENANT_ID_PARAM_] ===\n             'undefined')) {\n          request[fireauth.RpcHandler.TENANT_ID_PARAM_] = self.tenantId_;\n        }\n        return useIdentityPlatformEndpoint ?\n            self.requestIdentityPlatformEndpoint(method.endpoint, httpMethod,\n                request, method.customErrorMap, method.cachebuster || false) :\n            self.requestFirebaseEndpoint(method.endpoint, httpMethod,\n                request, method.customErrorMap, method.cachebuster || false);\n      })\n      .then(function(tempResponse) {\n        response = tempResponse;\n        // If response processor is available, pass request and response through\n        // it. Modifications would be made using response reference.\n        if (method.responsePreprocessor) {\n          return method.responsePreprocessor(request, response);\n        }\n        return response;\n      })\n      .then(method.responseValidator)\n      .then(function() {\n        if (!method.responseField) {\n          return response;\n        }\n        if (!(method.responseField in response)) {\n          throw new fireauth.AuthError(\n              fireauth.authenum.Error.INTERNAL_ERROR);\n        }\n        return response[method.responseField];\n      });\n};\n\n\n/**\n * Checks if the server response contains errors.\n * @param {!Object} resp The API response.\n * @return {boolean} {@code true} if the response contains errors.\n * @private\n */\nfireauth.RpcHandler.hasError_ = function(resp) {\n  return !!resp['error'];\n};\n\n\n/**\n * Returns the developer facing error corresponding to the server code provided.\n * @param {string} serverErrorCode The server error message.\n * @return {!fireauth.AuthError} The corresponding error object.\n * @private\n */\nfireauth.RpcHandler.getDeveloperErrorFromCode_ = function(serverErrorCode) {\n  // Encapsulate the server error code in a typical server error response with\n  // the code populated within. This will convert the response to a developer\n  // facing one.\n  return fireauth.RpcHandler.getDeveloperError_({\n    'error': {\n      'errors': [\n        {\n          'message': serverErrorCode\n        }\n      ],\n      'code': 400,\n      'message': serverErrorCode\n    }\n  });\n};\n\n\n/**\n * Converts a server response with errors to a developer-facing AuthError.\n * @param {!Object} response The server response.\n * @param {?fireauth.RpcHandler.ServerErrorMap=} opt_customErrorMap A map of\n *     backend error codes to client-side errors. Any entries set here\n *     override the default handling of the backend error code.\n * @return {!fireauth.AuthError} The corresponding error object.\n * @private\n */\nfireauth.RpcHandler.getDeveloperError_ =\n    function(response, opt_customErrorMap) {\n  var errorMessage;\n  var apiaryError = fireauth.RpcHandler.getApiaryError_(response);\n  if (apiaryError) {\n    return apiaryError;\n  }\n\n  var serverErrorCode = fireauth.RpcHandler.getErrorCode_(response);\n\n  var errorMap = {};\n\n  // Custom token errors.\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_CUSTOM_TOKEN] =\n      fireauth.authenum.Error.INVALID_CUSTOM_TOKEN;\n  errorMap[fireauth.RpcHandler.ServerError.CREDENTIAL_MISMATCH] =\n      fireauth.authenum.Error.CREDENTIAL_MISMATCH;\n  // This can only happen if the SDK sends a bad request.\n  errorMap[fireauth.RpcHandler.ServerError.MISSING_CUSTOM_TOKEN] =\n      fireauth.authenum.Error.INTERNAL_ERROR;\n\n  // Create Auth URI errors.\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_IDENTIFIER] =\n      fireauth.authenum.Error.INVALID_EMAIL;\n  // This can only happen if the SDK sends a bad request.\n  errorMap[fireauth.RpcHandler.ServerError.MISSING_CONTINUE_URI] =\n      fireauth.authenum.Error.INTERNAL_ERROR;\n\n  // Sign in with email and password errors (some apply to sign up too).\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_EMAIL] =\n      fireauth.authenum.Error.INVALID_EMAIL;\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_PASSWORD] =\n      fireauth.authenum.Error.INVALID_PASSWORD;\n  errorMap[fireauth.RpcHandler.ServerError.USER_DISABLED] =\n      fireauth.authenum.Error.USER_DISABLED;\n  // This can only happen if the SDK sends a bad request.\n  errorMap[fireauth.RpcHandler.ServerError.MISSING_PASSWORD] =\n      fireauth.authenum.Error.INTERNAL_ERROR;\n\n  // Sign up with email and password errors.\n  errorMap[fireauth.RpcHandler.ServerError.EMAIL_EXISTS] =\n      fireauth.authenum.Error.EMAIL_EXISTS;\n  errorMap[fireauth.RpcHandler.ServerError.PASSWORD_LOGIN_DISABLED] =\n      fireauth.authenum.Error.OPERATION_NOT_ALLOWED;\n\n  // Verify assertion for sign in with credential errors:\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_IDP_RESPONSE] =\n      fireauth.authenum.Error.INVALID_IDP_RESPONSE;\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_PENDING_TOKEN] =\n      fireauth.authenum.Error.INVALID_IDP_RESPONSE;\n  errorMap[fireauth.RpcHandler.ServerError.FEDERATED_USER_ID_ALREADY_LINKED] =\n      fireauth.authenum.Error.CREDENTIAL_ALREADY_IN_USE;\n  errorMap[fireauth.RpcHandler.ServerError.MISSING_OR_INVALID_NONCE] =\n      fireauth.authenum.Error.MISSING_OR_INVALID_NONCE;\n\n  // Email template errors while sending emails:\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_MESSAGE_PAYLOAD] =\n      fireauth.authenum.Error.INVALID_MESSAGE_PAYLOAD;\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_RECIPIENT_EMAIL] =\n      fireauth.authenum.Error.INVALID_RECIPIENT_EMAIL;\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_SENDER] =\n      fireauth.authenum.Error.INVALID_SENDER;\n\n  // Send Password reset email errors:\n  errorMap[fireauth.RpcHandler.ServerError.EMAIL_NOT_FOUND] =\n      fireauth.authenum.Error.USER_DELETED;\n  errorMap[fireauth.RpcHandler.ServerError.RESET_PASSWORD_EXCEED_LIMIT] =\n      fireauth.authenum.Error.TOO_MANY_ATTEMPTS_TRY_LATER;\n\n  // Reset password errors:\n  errorMap[fireauth.RpcHandler.ServerError.EXPIRED_OOB_CODE] =\n      fireauth.authenum.Error.EXPIRED_OOB_CODE;\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_OOB_CODE] =\n      fireauth.authenum.Error.INVALID_OOB_CODE;\n  // This can only happen if the SDK sends a bad request.\n  errorMap[fireauth.RpcHandler.ServerError.MISSING_OOB_CODE] =\n      fireauth.authenum.Error.INTERNAL_ERROR;\n\n  // Get Auth URI errors:\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_PROVIDER_ID] =\n      fireauth.authenum.Error.INVALID_PROVIDER_ID;\n\n  // Operations that require ID token in request:\n  errorMap[fireauth.RpcHandler.ServerError.CREDENTIAL_TOO_OLD_LOGIN_AGAIN] =\n      fireauth.authenum.Error.CREDENTIAL_TOO_OLD_LOGIN_AGAIN;\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_ID_TOKEN] =\n      fireauth.authenum.Error.INVALID_AUTH;\n  errorMap[fireauth.RpcHandler.ServerError.TOKEN_EXPIRED] =\n      fireauth.authenum.Error.TOKEN_EXPIRED;\n  errorMap[fireauth.RpcHandler.ServerError.USER_NOT_FOUND] =\n      fireauth.authenum.Error.TOKEN_EXPIRED;\n\n  // CORS issues.\n  errorMap[fireauth.RpcHandler.ServerError.CORS_UNSUPPORTED] =\n      fireauth.authenum.Error.CORS_UNSUPPORTED;\n\n  // Dynamic link not activated.\n  errorMap[fireauth.RpcHandler.ServerError.DYNAMIC_LINK_NOT_ACTIVATED] =\n      fireauth.authenum.Error.DYNAMIC_LINK_NOT_ACTIVATED;\n\n  // iosBundleId or androidPackageName not valid error.\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_APP_ID] =\n      fireauth.authenum.Error.INVALID_APP_ID;\n\n  // Other errors.\n  errorMap[fireauth.RpcHandler.ServerError.TOO_MANY_ATTEMPTS_TRY_LATER] =\n      fireauth.authenum.Error.TOO_MANY_ATTEMPTS_TRY_LATER;\n  errorMap[fireauth.RpcHandler.ServerError.WEAK_PASSWORD] =\n      fireauth.authenum.Error.WEAK_PASSWORD;\n  errorMap[fireauth.RpcHandler.ServerError.OPERATION_NOT_ALLOWED] =\n      fireauth.authenum.Error.OPERATION_NOT_ALLOWED;\n  errorMap[fireauth.RpcHandler.ServerError.USER_CANCELLED] =\n      fireauth.authenum.Error.USER_CANCELLED;\n\n  // Phone Auth related errors.\n  errorMap[fireauth.RpcHandler.ServerError.CAPTCHA_CHECK_FAILED] =\n      fireauth.authenum.Error.CAPTCHA_CHECK_FAILED;\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_APP_CREDENTIAL] =\n      fireauth.authenum.Error.INVALID_APP_CREDENTIAL;\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_CODE] =\n      fireauth.authenum.Error.INVALID_CODE;\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_PHONE_NUMBER] =\n      fireauth.authenum.Error.INVALID_PHONE_NUMBER;\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_SESSION_INFO] =\n      fireauth.authenum.Error.INVALID_SESSION_INFO;\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_TEMPORARY_PROOF] =\n      fireauth.authenum.Error.INVALID_IDP_RESPONSE;\n  errorMap[fireauth.RpcHandler.ServerError.MISSING_APP_CREDENTIAL] =\n      fireauth.authenum.Error.MISSING_APP_CREDENTIAL;\n  errorMap[fireauth.RpcHandler.ServerError.MISSING_CODE] =\n      fireauth.authenum.Error.MISSING_CODE;\n  errorMap[fireauth.RpcHandler.ServerError.MISSING_PHONE_NUMBER] =\n      fireauth.authenum.Error.MISSING_PHONE_NUMBER;\n  errorMap[fireauth.RpcHandler.ServerError.MISSING_SESSION_INFO] =\n      fireauth.authenum.Error.MISSING_SESSION_INFO;\n  errorMap[fireauth.RpcHandler.ServerError.QUOTA_EXCEEDED] =\n      fireauth.authenum.Error.QUOTA_EXCEEDED;\n  errorMap[fireauth.RpcHandler.ServerError.SESSION_EXPIRED] =\n      fireauth.authenum.Error.CODE_EXPIRED;\n  errorMap[fireauth.RpcHandler.ServerError.REJECTED_CREDENTIAL] =\n      fireauth.authenum.Error.REJECTED_CREDENTIAL;\n\n  // Other action code errors when additional settings passed.\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_CONTINUE_URI] =\n      fireauth.authenum.Error.INVALID_CONTINUE_URI;\n  // MISSING_CONTINUE_URI is getting mapped to INTERNAL_ERROR above.\n  // This is OK as this error will be caught by client side validation.\n  errorMap[fireauth.RpcHandler.ServerError.MISSING_ANDROID_PACKAGE_NAME] =\n      fireauth.authenum.Error.MISSING_ANDROID_PACKAGE_NAME;\n  errorMap[fireauth.RpcHandler.ServerError.MISSING_IOS_BUNDLE_ID] =\n      fireauth.authenum.Error.MISSING_IOS_BUNDLE_ID;\n  errorMap[fireauth.RpcHandler.ServerError.UNAUTHORIZED_DOMAIN] =\n      fireauth.authenum.Error.UNAUTHORIZED_DOMAIN;\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_DYNAMIC_LINK_DOMAIN] =\n      fireauth.authenum.Error.INVALID_DYNAMIC_LINK_DOMAIN;\n\n  // getProjectConfig errors when clientId is passed.\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_OAUTH_CLIENT_ID] =\n      fireauth.authenum.Error.INVALID_OAUTH_CLIENT_ID;\n  // getProjectConfig errors when sha1Cert is passed.\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_CERT_HASH] =\n      fireauth.authenum.Error.INVALID_CERT_HASH;\n\n  // Multi-tenant related errors.\n  errorMap[fireauth.RpcHandler.ServerError.UNSUPPORTED_TENANT_OPERATION] =\n      fireauth.authenum.Error.UNSUPPORTED_TENANT_OPERATION;\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_TENANT_ID] =\n      fireauth.authenum.Error.INVALID_TENANT_ID;\n  errorMap[fireauth.RpcHandler.ServerError.TENANT_ID_MISMATCH] =\n      fireauth.authenum.Error.TENANT_ID_MISMATCH;\n\n  // User actions (sign-up or deletion) disabled errors.\n  errorMap[fireauth.RpcHandler.ServerError.ADMIN_ONLY_OPERATION] =\n      fireauth.authenum.Error.ADMIN_ONLY_OPERATION;\n\n  // Multi-factor related errors.\n  errorMap[fireauth.RpcHandler.ServerError.INVALID_MFA_PENDING_CREDENTIAL] =\n      fireauth.authenum.Error.INVALID_MFA_PENDING_CREDENTIAL;\n  errorMap[fireauth.RpcHandler.ServerError.MFA_ENROLLMENT_NOT_FOUND] =\n      fireauth.authenum.Error.MFA_ENROLLMENT_NOT_FOUND;\n  errorMap[fireauth.RpcHandler.ServerError.MISSING_MFA_PENDING_CREDENTIAL] =\n      fireauth.authenum.Error.MISSING_MFA_PENDING_CREDENTIAL;\n  errorMap[fireauth.RpcHandler.ServerError.MISSING_MFA_ENROLLMENT_ID] =\n      fireauth.authenum.Error.MISSING_MFA_ENROLLMENT_ID;\n  errorMap[fireauth.RpcHandler.ServerError.EMAIL_CHANGE_NEEDS_VERIFICATION] =\n      fireauth.authenum.Error.EMAIL_CHANGE_NEEDS_VERIFICATION;\n  errorMap[fireauth.RpcHandler.ServerError.SECOND_FACTOR_EXISTS] =\n      fireauth.authenum.Error.SECOND_FACTOR_EXISTS;\n  errorMap[fireauth.RpcHandler.ServerError.SECOND_FACTOR_LIMIT_EXCEEDED] =\n      fireauth.authenum.Error.SECOND_FACTOR_LIMIT_EXCEEDED;\n  errorMap[fireauth.RpcHandler.ServerError.UNSUPPORTED_FIRST_FACTOR] =\n      fireauth.authenum.Error.UNSUPPORTED_FIRST_FACTOR;\n  errorMap[fireauth.RpcHandler.ServerError.UNVERIFIED_EMAIL] =\n      fireauth.authenum.Error.UNVERIFIED_EMAIL;\n\n  // Override errors set in the custom map.\n  var customErrorMap = opt_customErrorMap || {};\n  goog.object.extend(errorMap, customErrorMap);\n\n  // Get detailed message if available.\n  errorMessage = fireauth.RpcHandler.getErrorCodeDetails(serverErrorCode);\n\n  // Handle backend errors where the error code can be a prefix of the message\n  // (e.g. \"WEAK_PASSWORD : Password should be at least 6 characters\").\n  // Use the details after the colon as the error message. If none available,\n  // pass undefined, which will default to the client hard coded error messages.\n  for (var prefixCode in errorMap) {\n    if (serverErrorCode.indexOf(prefixCode) === 0) {\n      return new fireauth.AuthError(errorMap[prefixCode], errorMessage);\n    }\n  }\n\n  // No error message found, return the serialized response as the message.\n  // This is likely to be an Apiary error for unexpected cases like keyExpired,\n  // etc.\n  if (!errorMessage && response) {\n     errorMessage = fireauth.util.stringifyJSON(response);\n  }\n  // The backend returned some error we don't recognize; this is an error on\n  // our side.\n  return new fireauth.AuthError(\n      fireauth.authenum.Error.INTERNAL_ERROR, errorMessage);\n};\n\n\n/**\n * @param {string} serverMessage The server error code.\n * @return {string|undefined} The detailed error code message.\n */\nfireauth.RpcHandler.getErrorCodeDetails = function(serverMessage) {\n  // Use the error details part as the autherror message.\n  // For a message INVALID_CUSTOM_TOKEN : [error detail here],\n  // The Auth error message should be [error detail here].\n  // No space should be contained in the error code, otherwise no detailed error\n  // message returned.\n  var matches = serverMessage.match(/^[^\\s]+\\s*:\\s*([\\s\\S]*)$/);\n  if (matches && matches.length > 1) {\n    return matches[1];\n  }\n  return undefined;\n};\n\n\n/**\n * Gets the Apiary error from a backend response, if applicable.\n * @param {!Object} response The API response.\n * @return {?fireauth.AuthError} The error, if applicable.\n * @private\n */\nfireauth.RpcHandler.getApiaryError_ = function(response) {\n  var error = response['error'] && response['error']['errors'] &&\n      response['error']['errors'][0] || {};\n  var reason = error['reason'] || '';\n\n  var errorReasonMap = {\n    'keyInvalid': fireauth.authenum.Error.INVALID_API_KEY,\n    'ipRefererBlocked': fireauth.authenum.Error.APP_NOT_AUTHORIZED\n  };\n\n  if (errorReasonMap[reason]) {\n    return new fireauth.AuthError(errorReasonMap[reason]);\n  }\n\n  return null;\n};\n\n\n/**\n * Gets the server error code from the response.\n * @param {!Object} resp The API response.\n * @return {string} The error code if present.\n * @private\n */\nfireauth.RpcHandler.getErrorCode_ = function(resp) {\n  return (resp['error'] && resp['error']['message']) || '';\n};\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview The headless Auth class used for authenticating Firebase users.\n */\n\ngoog.provide('fireauth.Auth');\n\ngoog.require('fireauth.ActionCodeInfo');\ngoog.require('fireauth.ActionCodeSettings');\ngoog.require('fireauth.AdditionalUserInfo');\ngoog.require('fireauth.AuthCredential');\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.AuthEvent');\ngoog.require('fireauth.AuthEventHandler');\ngoog.require('fireauth.AuthEventManager');\ngoog.require('fireauth.AuthProvider');\ngoog.require('fireauth.AuthSettings');\ngoog.require('fireauth.AuthUser');\ngoog.require('fireauth.ConfirmationResult');\ngoog.require('fireauth.EmailAuthProvider');\ngoog.require('fireauth.MultiFactorError');\ngoog.require('fireauth.RpcHandler');\ngoog.require('fireauth.UserEventType');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.constants');\ngoog.require('fireauth.deprecation');\ngoog.require('fireauth.idp');\ngoog.require('fireauth.iframeclient.IfcHandler');\ngoog.require('fireauth.object');\ngoog.require('fireauth.storage.RedirectUserManager');\ngoog.require('fireauth.storage.UserManager');\ngoog.require('fireauth.util');\ngoog.require('goog.Promise');\ngoog.require('goog.array');\ngoog.require('goog.events');\ngoog.require('goog.events.Event');\ngoog.require('goog.events.EventTarget');\ngoog.require('goog.object');\n\n\n\n/**\n * Creates the Firebase Auth corresponding for the App provided.\n *\n * @param {!firebase.app.App} app The corresponding Firebase App.\n * @constructor\n * @implements {fireauth.AuthEventHandler}\n * @implements {firebase.Service}\n * @extends {goog.events.EventTarget}\n */\nfireauth.Auth = function(app) {\n  /** @private {boolean} Whether this instance is deleted. */\n  this.deleted_ = false;\n  /** The Auth instance's settings object. */\n  fireauth.object.setReadonlyProperty(\n      this, 'settings', new fireauth.AuthSettings());\n  /** Auth's corresponding App. */\n  fireauth.object.setReadonlyProperty(this, 'app', app);\n  // Initialize RPC handler.\n  // API key is required for web client RPC calls.\n  if (this.app_().options && this.app_().options['apiKey']) {\n    var clientFullVersion = firebase.SDK_VERSION ?\n        fireauth.util.getClientVersion(\n            fireauth.util.ClientImplementation.JSCORE, firebase.SDK_VERSION) :\n        null;\n    this.rpcHandler_ = new fireauth.RpcHandler(\n        this.app_().options && this.app_().options['apiKey'],\n        // Get the client Auth endpoint used.\n        fireauth.constants.getEndpointConfig(fireauth.constants.clientEndpoint),\n        clientFullVersion);\n  } else {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INVALID_API_KEY);\n  }\n  /** @private {!Array<!goog.Promise<*, *>|!goog.Promise<void>>} List of\n   *      pending promises. */\n  this.pendingPromises_ = [];\n  /** @private {!Array<!function(?string)>} Auth token listeners. */\n  this.authListeners_ = [];\n  /** @private {!Array<!function(?string)>} User change listeners. */\n  this.userChangeListeners_ = [];\n  /**\n   * @private {!firebase.Subscribe} The subscribe function to the Auth ID token\n   *     change observer. This will trigger on ID token changes, including\n   *     token refresh on the same user.\n   */\n  this.onIdTokenChanged_ = firebase.INTERNAL.createSubscribe(\n      goog.bind(this.initIdTokenChangeObserver_, this));\n  /**\n   * @private {?string|undefined} The UID of the user that last triggered the\n   *     user state change listener.\n   */\n  this.userStateChangeUid_ = undefined;\n  /**\n   * @private {!firebase.Subscribe} The subscribe function to the user state\n   *     change observer.\n   */\n  this.onUserStateChanged_ = firebase.INTERNAL.createSubscribe(\n      goog.bind(this.initUserStateObserver_, this));\n  // Set currentUser to null.\n  this.setCurrentUser_(null);\n  /**\n   * @private {!fireauth.storage.UserManager} The Auth user storage\n   *     manager instance.\n   */\n  this.userStorageManager_ =\n      new fireauth.storage.UserManager(this.getStorageKey());\n  /**\n   * @private {!fireauth.storage.RedirectUserManager} The redirect user\n   *     storagemanager instance.\n   */\n  this.redirectUserStorageManager_ =\n      new fireauth.storage.RedirectUserManager(this.getStorageKey());\n  /**\n   * @private {!goog.Promise<undefined>} Promise that resolves when initial\n   *     state is loaded from storage.\n   */\n  this.authStateLoaded_ = this.registerPendingPromise_(this.initAuthState_());\n  /**\n   * @private {!goog.Promise<undefined>} Promise that resolves when state and\n   *     redirect result is ready, after which sign in and sign out operations\n   *     are safe to execute.\n   */\n  this.redirectStateIsReady_ = this.registerPendingPromise_(\n      this.initAuthRedirectState_());\n  /** @private {boolean} Whether initial state has already been resolved. */\n  this.isStateResolved_ = false;\n  /**\n   * @private {!function()} The syncAuthChanges function with context set to\n   *     auth instance.\n   */\n  this.getSyncAuthUserChanges_ = goog.bind(this.syncAuthUserChanges_, this);\n  /** @private {!function(!fireauth.AuthUser):!goog.Promise} The handler for\n   *      user state changes. */\n  this.userStateChangeListener_ =\n      goog.bind(this.handleUserStateChange_, this);\n  /** @private {!function(!Object)} The handler for user token changes. */\n  this.userTokenChangeListener_ =\n      goog.bind(this.handleUserTokenChange_, this);\n  /** @private {!function(!Object)} The handler for user deletion. */\n  this.userDeleteListener_ = goog.bind(this.handleUserDelete_, this);\n  /** @private {!function(!Object)} The handler for user invalidation. */\n  this.userInvalidatedListener_ = goog.bind(this.handleUserInvalidated_, this);\n  /**\n   * @private {?fireauth.AuthEventManager} The Auth event manager instance.\n   */\n  this.authEventManager_ = null;\n  // TODO: find better way to enable or disable auth event manager.\n  if (fireauth.AuthEventManager.ENABLED) {\n    // Initialize Auth event manager to handle popup and redirect operations.\n    this.initAuthEventManager_();\n  }\n\n  // Export INTERNAL namespace.\n  this.INTERNAL = {};\n  this.INTERNAL['delete'] = goog.bind(this.delete, this);\n  this.INTERNAL['logFramework'] = goog.bind(this.logFramework, this);\n  /**\n   * @private {number} The number of Firebase services subscribed to Auth\n   *     changes.\n   */\n  this.firebaseServices_ = 0;\n  // Add call to superclass constructor.\n  fireauth.Auth.base(this, 'constructor');\n  // Initialize readable/writable Auth properties.\n  this.initializeReadableWritableProps_();\n  /**\n   * @private {!Array<string>} List of Firebase frameworks/libraries used. This\n   *     is currently only used to log FirebaseUI.\n   */\n  this.frameworks_ = [];\n\n  /**\n   * @private {?fireauth.constants.EmulatorSettings} The current\n   *     emulator settings.\n   */\n  this.emulatorConfig_ = null;\n};\ngoog.inherits(fireauth.Auth, goog.events.EventTarget);\n\n\n/**\n * Language code change custom event.\n * @param {?string} languageCode The new language code.\n * @constructor\n * @extends {goog.events.Event}\n */\nfireauth.Auth.LanguageCodeChangeEvent = function(languageCode) {\n  goog.events.Event.call(\n      this, fireauth.constants.AuthEventType.LANGUAGE_CODE_CHANGED);\n  this.languageCode = languageCode;\n};\ngoog.inherits(fireauth.Auth.LanguageCodeChangeEvent, goog.events.Event);\n\n\n/**\n * Emulator config change custom event.\n * @param {?fireauth.constants.EmulatorSettings} emulatorConfig The new\n *     emulator settings.\n * @constructor\n * @extends {goog.events.Event}\n */\nfireauth.Auth.EmulatorConfigChangeEvent = function(emulatorConfig) {\n  goog.events.Event.call(this, fireauth.constants.AuthEventType.EMULATOR_CONFIG_CHANGED);\n  this.emulatorConfig = emulatorConfig;\n};\ngoog.inherits(fireauth.Auth.EmulatorConfigChangeEvent, goog.events.Event);\n\n\n/**\n * Framework change custom event.\n * @param {!Array<string>} frameworks The new frameworks array.\n * @constructor\n * @extends {goog.events.Event}\n */\nfireauth.Auth.FrameworkChangeEvent = function(frameworks) {\n  goog.events.Event.call(\n      this, fireauth.constants.AuthEventType.FRAMEWORK_CHANGED);\n  this.frameworks = frameworks;\n};\ngoog.inherits(fireauth.Auth.FrameworkChangeEvent, goog.events.Event);\n\n\n/**\n * Changes the Auth state persistence to the specified one.\n * @param {!fireauth.authStorage.Persistence} persistence The Auth state\n *     persistence mechanism.\n * @return {!goog.Promise<void>}\n */\nfireauth.Auth.prototype.setPersistence = function(persistence) {\n  // TODO: fix auth.delete() behavior and how this affects persistence\n  // change after deletion.\n  // Throw an error if already destroyed.\n  // Set current persistence.\n  var p = this.userStorageManager_.setPersistence(persistence);\n  return /** @type {!goog.Promise<void>} */ (this.registerPendingPromise_(p));\n};\n\n\n/**\n * Get rid of Closure warning - the property is adding in the constructor.\n * @type {!firebase.app.App}\n */\nfireauth.Auth.prototype.app;\n\n\n/**\n * Sets the language code.\n * @param {?string} languageCode\n */\nfireauth.Auth.prototype.setLanguageCode = function(languageCode) {\n  // Don't do anything if no change detected.\n  if (this.languageCode_ !== languageCode && !this.deleted_) {\n    this.languageCode_ = languageCode;\n    // Update custom Firebase locale field.\n    this.rpcHandler_.updateCustomLocaleHeader(this.languageCode_);\n    // Notify external language code change listeners.\n    this.notifyLanguageCodeListeners_();\n  }\n};\n\n\n/**\n * Returns the current auth instance's language code if available.\n * @return {?string}\n */\nfireauth.Auth.prototype.getLanguageCode = function() {\n  return this.languageCode_;\n};\n\n\n/**\n * Sets the current language to the default device/browser preference.\n */\nfireauth.Auth.prototype.useDeviceLanguage = function() {\n  this.setLanguageCode(fireauth.util.getUserLanguage());\n};\n\n\n/**\n * Sets the emulator configuration (go/firebase-emulator-connection-api).\n * @param {string} url The url for the Auth emulator.\n * @param {?Object=} options Optional options to specify emulator settings.\n */\nfireauth.Auth.prototype.useEmulator = function(url, options) {\n  // Emulator config can only be set once.\n  if (!this.emulatorConfig_) {\n    if (!/^https?:\\/\\//.test(url)) {\n      throw new fireauth.AuthError(\n          fireauth.authenum.Error.ARGUMENT_ERROR,\n          'Emulator URL must start with a valid scheme (http:// or https://).');\n    }\n    // Emit a warning so dev knows we are now in test mode.\n    const disableBanner = options ? !!options['disableWarnings'] : false;\n    this.emitEmulatorWarning_(disableBanner);\n    // Persist the config.\n    this.emulatorConfig_ = {url, disableWarnings: disableBanner};\n    // Disable app verification.\n    this.settings_().setAppVerificationDisabledForTesting(true);\n    // Update RPC handler endpoints.\n    this.rpcHandler_.updateEmulatorConfig(this.emulatorConfig_);\n    // Notify external event listeners.\n    this.notifyEmulatorConfigListeners_();\n  }\n}\n\n\n/**\n * Emits a console info and a visual banner if emulator integration is\n * enabled.\n * @param {boolean} disableBanner Whether visual banner should be disabled.\n * @private\n */\nfireauth.Auth.prototype.emitEmulatorWarning_ = function(disableBanner) {\n  fireauth.util.consoleInfo('WARNING: You are using the Auth Emulator,' +\n    ' which is intended for local testing only.  Do not use with' +\n    ' production credentials.');\n  if (goog.global.document && !disableBanner) {\n    fireauth.util.onDomReady().then(() => {\n      const ele = goog.global.document.createElement('div');\n      ele.innerText = 'Running in emulator mode. Do not use with production' +\n        ' credentials.';\n      ele.style.position = 'fixed';\n      ele.style.width = '100%';\n      ele.style.backgroundColor = '#ffffff';\n      ele.style.border = '.1em solid #000000';\n      ele.style.color = '#ff0000';\n      ele.style.bottom = '0px';\n      ele.style.left = '0px';\n      ele.style.margin = '0px';\n      ele.style.zIndex = 10000;\n      ele.style.textAlign = 'center';\n      ele.classList.add('firebase-emulator-warning');\n      goog.global.document.body.appendChild(ele);\n    });\n  }\n}\n\n\n/**\n * @return {?fireauth.constants.EmulatorConfig}\n */\nfireauth.Auth.prototype.getEmulatorConfig = function() {\n  if (!this.emulatorConfig_) {\n    return null;\n  }\n  const uri = goog.Uri.parse(this.emulatorConfig_.url);\n  return /** @type {!fireauth.constants.EmulatorConfig} */ (\n      fireauth.object.makeReadonlyCopy({\n        'protocol': uri.getScheme(),\n        'host': uri.getDomain(),\n        'port': uri.getPort(),\n        'options': fireauth.object.makeReadonlyCopy({\n          'disableWarnings': this.emulatorConfig_.disableWarnings,\n        }),\n      }));\n}\n\n\n/**\n * @param {string} frameworkId The framework identifier.\n */\nfireauth.Auth.prototype.logFramework = function(frameworkId) {\n  // Theoretically multiple frameworks could be used\n  // (angularfire and FirebaseUI). Once a framework is used, it is not going\n  // to be unused, so no point adding a method to remove the framework ID.\n  this.frameworks_.push(frameworkId);\n  // Update the client version in RPC handler with the new frameworks.\n  this.rpcHandler_.updateClientVersion(firebase.SDK_VERSION ?\n        fireauth.util.getClientVersion(\n            fireauth.util.ClientImplementation.JSCORE, firebase.SDK_VERSION,\n            this.frameworks_) :\n        null);\n  this.dispatchEvent(new fireauth.Auth.FrameworkChangeEvent(\n      this.frameworks_));\n};\n\n\n/** @return {!Array<string>} The current Firebase frameworks. */\nfireauth.Auth.prototype.getFramework = function() {\n  return goog.array.clone(this.frameworks_);\n};\n\n\n/**\n * Updates the framework list on the provided user and configures the user to\n * listen to the Auth instance for any framework ID changes.\n * @param {!fireauth.AuthUser} user The user to whose framework list needs to be\n *     updated.\n * @private\n */\nfireauth.Auth.prototype.setUserFramework_ = function(user) {\n  // Sets the framework ID on the user.\n  user.setFramework(this.frameworks_);\n  // Sets current Auth instance as framework list change dispatcher on the user.\n  user.setFrameworkChangeDispatcher(this);\n};\n\n\n/**\n * Sets the tenant ID.\n * @param {?string} tenantId The tenant ID of the tenant project if available.\n */\nfireauth.Auth.prototype.setTenantId = function(tenantId) {\n  // Don't do anything if no change detected.\n  if (this.tenantId_ !== tenantId && !this.deleted_) {\n    this.tenantId_ = tenantId;\n    this.rpcHandler_.updateTenantId(this.tenantId_);\n  }\n};\n\n\n/**\n * Returns the current Auth instance's tenant ID.\n * @return {?string}\n */\nfireauth.Auth.prototype.getTenantId = function() {\n  return this.tenantId_;\n};\n\n\n/**\n * Initializes readable/writable properties on Auth.\n * @suppress {invalidCasts}\n * @private\n */\nfireauth.Auth.prototype.initializeReadableWritableProps_ = function() {\n  Object.defineProperty(/** @type {!Object} */ (this), 'lc', {\n    /**\n     * @this {!Object}\n     * @return {?string} The current language code.\n     */\n    get: function() {\n      return this.getLanguageCode();\n    },\n    /**\n     * @this {!Object}\n     * @param {string} value The new language code.\n     */\n    set: function(value) {\n      this.setLanguageCode(value);\n    },\n    enumerable: false\n  });\n  // Initialize to null.\n  /** @private {?string} The current Auth instance's language code. */\n  this.languageCode_ = null;\n\n  // Initialize tenant ID.\n  Object.defineProperty(/** @type {!Object} */ (this), 'ti', {\n    /**\n     * @this {!Object}\n     * @return {?string} The current tenant ID.\n     */\n    get: function() {\n      return this.getTenantId();\n    },\n    /**\n     * @this {!Object}\n     * @param {?string} value The new tenant ID.\n     */\n    set: function(value) {\n      this.setTenantId(value);\n    },\n    enumerable: false\n  });\n  // Initialize to null.\n  /** @private {?string} The current Auth instance's tenant ID. */\n  this.tenantId_ = null;\n\n  // Add the emulator configuration property (readonly).\n  Object.defineProperty(/** @type {!Object} */ (this), 'emulatorConfig', {\n    /**\n     * @this {!Object}\n     * @return {?fireauth.constants.EmulatorConfig} The emulator config if\n     * enabled.\n     */\n    get: function() {\n      return this.getEmulatorConfig();\n    },\n    enumerable: false\n  });\n};\n\n\n/**\n * Notifies all external listeners of the language code change.\n * @private\n */\nfireauth.Auth.prototype.notifyLanguageCodeListeners_ = function() {\n  // Notify external listeners on the language code change.\n  this.dispatchEvent(new fireauth.Auth.LanguageCodeChangeEvent(\n      this.getLanguageCode()));\n};\n\n\n/**\n * Notifies all external listeners of the emulator config change.\n * @private\n */\nfireauth.Auth.prototype.notifyEmulatorConfigListeners_ = function() {\n  // Notify external listeners on the emulator config change.\n  this.dispatchEvent(\n    new fireauth.Auth.EmulatorConfigChangeEvent(this.emulatorConfig_));\n}\n\n\n/**\n * @return {!Object} The object representation of the Auth instance.\n * @override\n */\nfireauth.Auth.prototype.toJSON = function() {\n  // Return the plain object representation in case JSON.stringify is called on\n  // an Auth instance.\n  return {\n    'apiKey': this.app_().options['apiKey'],\n    'authDomain': this.app_().options['authDomain'],\n    'appName': this.app_().name,\n    'currentUser': this.currentUser_() && this.currentUser_().toPlainObject()\n  };\n};\n\n\n/**\n * Returns the Auth event manager promise.\n * @return {!goog.Promise<!fireauth.AuthEventManager>}\n * @private\n */\nfireauth.Auth.prototype.getAuthEventManager_ = function() {\n  // Either return cached Auth event manager promise provider if available or a\n  // promise that rejects with missing Auth domain error.\n  return this.eventManagerProviderPromise_ ||\n      goog.Promise.reject(\n          new fireauth.AuthError(fireauth.authenum.Error.MISSING_AUTH_DOMAIN));\n};\n\n\n/**\n * Initializes the Auth event manager when state is ready.\n * @private\n */\nfireauth.Auth.prototype.initAuthEventManager_ = function() {\n  // Initialize Auth event manager on initState.\n  var self = this;\n  var authDomain = this.app_().options['authDomain'];\n  var apiKey = this.app_().options['apiKey'];\n  // Make sure environment also supports popup and redirect.\n  if (authDomain && fireauth.util.isPopupRedirectSupported()) {\n    // Auth domain is required for Auth event manager to resolve.\n    // Auth state has to be loaded first. One reason is to process link events.\n    this.eventManagerProviderPromise_ = this.authStateLoaded_.then(function() {\n      if (self.deleted_) {\n        return;\n      }\n      // By this time currentUser should be ready if available and will be able\n      // to resolve linkWithRedirect if detected.\n      self.authEventManager_ = fireauth.AuthEventManager.getManager(\n        authDomain,\n        apiKey,\n        self.app_().name,\n        self.emulatorConfig_);\n      // Subscribe Auth instance.\n      self.authEventManager_.subscribe(self);\n      // Subscribe current user by enabling popup and redirect on that user.\n      if (self.currentUser_()) {\n        self.currentUser_().enablePopupRedirect();\n      }\n      // If a redirect user is present, subscribe to popup and redirect events.\n      // In case current user was not available and the developer called link\n      // with redirect on a signed out user, this will work and the linked\n      // logged out user will be returned in getRedirectResult.\n      // current user and redirect user are the same (was already logged in),\n      // currentUser will have priority as it is subscribed before redirect\n      // user. This change will also allow further popup and redirect events on\n      // the redirect user going forward.\n      if (self.redirectUser_) {\n        self.redirectUser_.enablePopupRedirect();\n        // Set the user language for the redirect user.\n        self.setUserLanguage_(\n            /** @type {!fireauth.AuthUser} */ (self.redirectUser_));\n        // Set the user Firebase frameworks for the redirect user.\n        self.setUserFramework_(\n            /** @type {!fireauth.AuthUser} */(self.redirectUser_));\n        // Set the user Emulator configuration for the redirect user.\n        self.setUserEmulatorConfig_(\n            /** @type {!fireauth.AuthUser} */(self.redirectUser_));\n        // Reference to redirect user no longer needed.\n        self.redirectUser_ = null;\n      }\n      return self.authEventManager_;\n    });\n  }\n};\n\n\n/**\n * @param {!fireauth.AuthEvent.Type} mode The Auth type mode.\n * @param {?string=} opt_eventId The event ID.\n * @return {boolean} Whether the auth event handler can handler the provided\n *     event.\n * @override\n */\nfireauth.Auth.prototype.canHandleAuthEvent = function(mode, opt_eventId) {\n  // Only sign in events are handled.\n  switch (mode) {\n    // Accept all general sign in with redirect and unknowns.\n    // Migrating redirect events to use session storage will prevent this event\n    // from leaking to other tabs.\n    case fireauth.AuthEvent.Type.UNKNOWN:\n    case fireauth.AuthEvent.Type.SIGN_IN_VIA_REDIRECT:\n      return true;\n    case fireauth.AuthEvent.Type. SIGN_IN_VIA_POPUP:\n      // Pending sign in with popup event must match the stored popup event ID.\n      return this.popupEventId_ == opt_eventId &&\n          !!this.pendingPopupResolvePromise_;\n    default:\n      return false;\n  }\n};\n\n\n/**\n * Completes the pending popup operation. If error is not null, rejects with the\n * error. Otherwise, it resolves with the popup redirect result.\n * @param {!fireauth.AuthEvent.Type} mode The Auth type mode.\n * @param {?fireauth.AuthEventManager.Result} popupRedirectResult The result\n *     to resolve with when no error supplied.\n * @param {?fireauth.AuthError} error When supplied, the promise will reject.\n * @param {?string=} opt_eventId The event ID.\n * @override\n */\nfireauth.Auth.prototype.resolvePendingPopupEvent =\n    function(mode, popupRedirectResult, error, opt_eventId) {\n  // Only handles popup events of type sign in and which match popup event ID.\n  if (mode != fireauth.AuthEvent.Type.SIGN_IN_VIA_POPUP ||\n      this.popupEventId_ != opt_eventId) {\n    return;\n  }\n  if (error && this.pendingPopupRejectPromise_) {\n    // Reject with error for supplied mode.\n    this.pendingPopupRejectPromise_(error);\n  } else if (popupRedirectResult &&\n             !error &&\n             this.pendingPopupResolvePromise_) {\n    // Resolve with result for supplied mode.\n    this.pendingPopupResolvePromise_(popupRedirectResult);\n  }\n  // Now that event is resolved, delete popup timeout promise.\n  if (this.popupTimeoutPromise_) {\n    this.popupTimeoutPromise_.cancel();\n    this.popupTimeoutPromise_ = null;\n  }\n  // Delete pending promises.\n  delete this.pendingPopupResolvePromise_;\n  delete this.pendingPopupRejectPromise_;\n};\n\n\n/**\n * Returns the handler's appropriate popup and redirect sign in operation\n * finisher.\n * @param {!fireauth.AuthEvent.Type} mode The Auth type mode.\n * @param {?string=} opt_eventId The optional event ID.\n * @return {?function(string, string, ?string,\n *     ?string=):!goog.Promise<!fireauth.AuthEventManager.Result>}\n * @override\n */\nfireauth.Auth.prototype.getAuthEventHandlerFinisher =\n    function(mode, opt_eventId) {\n  // Sign in events will be completed by finishPopupAndRedirectSignIn.\n  if (mode == fireauth.AuthEvent.Type.SIGN_IN_VIA_REDIRECT) {\n    return goog.bind(this.finishPopupAndRedirectSignIn, this);\n  } else if (mode == fireauth.AuthEvent.Type.SIGN_IN_VIA_POPUP &&\n             this.popupEventId_ == opt_eventId &&\n             this.pendingPopupResolvePromise_) {\n    return goog.bind(this.finishPopupAndRedirectSignIn, this);\n  }\n  return null;\n};\n\n\n/**\n * Finishes the popup and redirect sign in operations.\n * @param {string} requestUri The callback url with the oauth response.\n * @param {string} sessionId The session id used to generate the authUri.\n * @param {?string} tenantId The tenant ID.\n * @param {?string=} opt_postBody The optional POST body content.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.Auth.prototype.finishPopupAndRedirectSignIn =\n    function(requestUri, sessionId, tenantId, opt_postBody) {\n  var self = this;\n  // Verify assertion request.\n  var request = {\n    'requestUri': requestUri,\n    'postBody': opt_postBody,\n    'sessionId': sessionId,\n    // Even if tenant ID is null, still pass it to RPC handler explicitly so\n    // that it won't be overridden by RPC handler's tenant ID.\n    'tenantId': tenantId\n  };\n  // Now that popup has responded, delete popup timeout promise.\n  if (this.popupTimeoutPromise_) {\n    this.popupTimeoutPromise_.cancel();\n    this.popupTimeoutPromise_ = null;\n  }\n  // When state is ready, run verify assertion request.\n  // This will only run either after initial and redirect state is ready for\n  // popups or after initial state is ready for redirect resolution.\n  return self.authStateLoaded_.then(function() {\n    return self.signInWithIdTokenProvider_(\n        self.rpcHandler_.verifyAssertion(request));\n  });\n};\n\n\n/**\n * @return {string} The generated event ID used to identify a popup event.\n * @private\n */\nfireauth.Auth.prototype.generateEventId_ = function() {\n  return fireauth.util.generateEventId();\n};\n\n\n/**\n * Signs in to Auth provider via popup.\n * @param {!fireauth.AuthProvider} provider The Auth provider to sign in with.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.Auth.prototype.signInWithPopup = function(provider) {\n  // Check if popup and redirect are supported in this environment.\n  if (!fireauth.util.isPopupRedirectSupported()) {\n    return goog.Promise.reject(new fireauth.AuthError(\n        fireauth.authenum.Error.OPERATION_NOT_SUPPORTED));\n  }\n  var mode = fireauth.AuthEvent.Type.SIGN_IN_VIA_POPUP;\n  var self = this;\n  // Popup the window immediately to make sure the browser associates the\n  // popup with the click that triggered it.\n\n  // Get provider settings.\n  var settings = fireauth.idp.getIdpSettings(provider['providerId']);\n  // There could multiple sign in with popup events in different windows.\n  // We need to match the correct popup to the correct pending promise.\n  var eventId = this.generateEventId_();\n  // If incapable of redirecting popup from opener, popup destination URL\n  // directly. This could also happen in a sandboxed iframe.\n  var oauthHelperWidgetUrl = null;\n  if ((!fireauth.util.runsInBackground() || fireauth.util.isIframe()) &&\n      this.app_().options['authDomain'] &&\n      provider['isOAuthProvider']) {\n    oauthHelperWidgetUrl =\n        fireauth.iframeclient.IfcHandler.getOAuthHelperWidgetUrl(\n            this.app_().options['authDomain'],\n            this.app_().options['apiKey'],\n            this.app_().name,\n            mode,\n            provider,\n            null,\n            eventId,\n            firebase.SDK_VERSION || null,\n            null,\n            null,\n            this.getTenantId(),\n            this.emulatorConfig_);\n  }\n  // The popup must have a name, otherwise when successive popups are triggered\n  // they will all render in the same instance and none will succeed since the\n  // popup cancel of first window will close the shared popup window instance.\n  var popupWin =\n      fireauth.util.popup(\n          oauthHelperWidgetUrl,\n          fireauth.util.generateRandomString(),\n          settings && settings.popupWidth,\n          settings && settings.popupHeight);\n  // Auth event manager must be available for popup sign in to be possible.\n  var p = this.getAuthEventManager_().then(function(manager) {\n    // Process popup request tagging it with newly created event ID.\n    return manager.processPopup(\n        popupWin, mode, provider, eventId, !!oauthHelperWidgetUrl,\n        self.getTenantId());\n  }).then(function() {\n    return new goog.Promise(function(resolve, reject) {\n      // Expire other pending promises if still available..\n      self.resolvePendingPopupEvent(\n          mode,\n          null,\n          new fireauth.AuthError(fireauth.authenum.Error.EXPIRED_POPUP_REQUEST),\n          // Existing pending popup event ID.\n          self.popupEventId_);\n      // Save current pending promises.\n      self.pendingPopupResolvePromise_ = resolve;\n      self.pendingPopupRejectPromise_ = reject;\n      // Overwrite popup event ID with new one corresponding to popup.\n      self.popupEventId_ = eventId;\n      // Keep track of timeout promise to cancel it on promise resolution before\n      // it times out.\n      self.popupTimeoutPromise_ =\n          self.authEventManager_.startPopupTimeout(\n              self, mode, /** @type {!Window} */ (popupWin), eventId);\n    });\n  }).then(function(result) {\n    // On resolution, close popup if still opened and pass result through.\n    if (popupWin) {\n      fireauth.util.closeWindow(popupWin);\n    }\n    if (result) {\n      return fireauth.object.makeReadonlyCopy(result);\n    }\n    return null;\n  }).thenCatch(function(error) {\n    if (popupWin) {\n      fireauth.util.closeWindow(popupWin);\n    }\n    throw error;\n  });\n  return /** @type {!goog.Promise<!fireauth.AuthEventManager.Result>} */ (\n      this.registerPendingPromise_(p));\n};\n\n\n/**\n * Signs in to Auth provider via redirect.\n * @param {!fireauth.AuthProvider} provider The Auth provider to sign in with.\n * @return {!goog.Promise<void>}\n */\nfireauth.Auth.prototype.signInWithRedirect = function(provider) {\n  // Check if popup and redirect are supported in this environment.\n  if (!fireauth.util.isPopupRedirectSupported()) {\n    return goog.Promise.reject(new fireauth.AuthError(\n        fireauth.authenum.Error.OPERATION_NOT_SUPPORTED));\n  }\n  var self = this;\n  var mode = fireauth.AuthEvent.Type.SIGN_IN_VIA_REDIRECT;\n  // Auth event manager must be available for sign in via redirect to be\n  // possible.\n  var p = this.getAuthEventManager_().then(function(manager) {\n    // Remember current persistence to apply it on the next page.\n    // This is the only time the state is passed to the next page (when user is\n    // not already logged in).\n    // This is not needed for link and reauthenticate as the user is already\n    // stored with specified persistence.\n    return self.userStorageManager_.savePersistenceForRedirect();\n  }).then(function() {\n    // Process redirect operation.\n    return self.authEventManager_.processRedirect(\n        mode, provider, undefined, self.getTenantId());\n  });\n  return /** @type {!goog.Promise<void>} */ (this.registerPendingPromise_(p));\n};\n\n\n/**\n * Returns the redirect result. If coming back from a successful redirect sign\n * in, will resolve to the signed in user. If coming back from an unsuccessful\n * redirect sign, will reject with the proper error. If no redirect operation\n * called, resolves with null.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n * @private\n */\nfireauth.Auth.prototype.getRedirectResultWithoutClearing_ = function() {\n  // Check if popup and redirect are supported in this environment.\n  if (!fireauth.util.isPopupRedirectSupported()) {\n    return goog.Promise.reject(new fireauth.AuthError(\n        fireauth.authenum.Error.OPERATION_NOT_SUPPORTED));\n  }\n  var self = this;\n  // Auth event manager must be available for get redirect result to be\n  // possible.\n  var p = this.getAuthEventManager_().then(function(manager) {\n    // Return redirect result when resolved.\n    return self.authEventManager_.getRedirectResult();\n  }).then(function(result) {\n    if (result) {\n      return fireauth.object.makeReadonlyCopy(result);\n    }\n    return null;\n  });\n  return /** @type {!goog.Promise<!fireauth.AuthEventManager.Result>} */ (\n      this.registerPendingPromise_(p));\n};\n\n\n/**\n * In addition to returning the redirect result as in\n * `getRedirectResultWithoutClearing_`, this will also clear the cached\n * redirect result for security reasons.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.Auth.prototype.getRedirectResult = function() {\n  return this.getRedirectResultWithoutClearing_()\n        .then((result) => {\n          if (this.authEventManager_) {\n            this.authEventManager_.clearRedirectResult();\n          }\n          return result;\n        })\n        .thenCatch((error) => {\n          if (this.authEventManager_) {\n            this.authEventManager_.clearRedirectResult();\n          }\n          throw error;\n        });\n};\n\n\n/**\n * Asynchronously sets the provided user as currentUser on the current Auth\n * instance.\n * @param {?fireauth.AuthUser} user The user to be copied to Auth instance.\n * @return {!goog.Promise<void>}\n */\nfireauth.Auth.prototype.updateCurrentUser = function(user) {\n  if (!user) {\n    return goog.Promise.reject(new fireauth.AuthError(\n        fireauth.authenum.Error.NULL_USER));\n  }\n  if (this.tenantId_ != user['tenantId']) {\n    return goog.Promise.reject(new fireauth.AuthError(\n        fireauth.authenum.Error.TENANT_ID_MISMATCH));\n  }\n  var self = this;\n  var options = {};\n  options['apiKey'] = this.app_().options['apiKey'];\n  options['authDomain'] = this.app_().options['authDomain'];\n  options['appName'] = this.app_().name;\n  var newUser = fireauth.AuthUser.copyUser(user, options,\n      self.redirectUserStorageManager_, self.getFramework());\n  return this.registerPendingPromise_(\n      this.redirectStateIsReady_.then(function() {\n        if (self.app_().options['apiKey'] != user.getApiKey()) {\n          // Throws auth/invalid-user-token if user doesn't belong to app.\n          // Throws auth/user-token-expired if token expires.\n          return newUser.reload();\n        }\n      }).then(function() {\n        if (self.currentUser_() && user['uid'] == self.currentUser_()['uid']) {\n          // Same user signed in. Update user data and notify Auth listeners.\n          // No need to resubscribe to user events.\n          // TODO: Check if the user to copy is older than current user and skip\n          // the copy logic in that case.\n          self.currentUser_().copy(user);\n          return self.handleUserStateChange_(user);\n        }\n        self.setCurrentUser_(newUser);\n        // Enable popup and redirect events.\n        newUser.enablePopupRedirect();\n        // Save user changes.\n        return self.handleUserStateChange_(newUser);\n      }).then(function(user) {\n        self.notifyAuthListeners_();\n      }));\n};\n\n\n/**\n * Completes the headless sign in with the server response containing the STS\n * access and refresh tokens, and sets the Auth user as current user while\n * setting all listeners to it and saving it to storage.\n * @param {!Object<string, string>} idTokenResponse The ID token response from\n *     the server.\n * @return {!goog.Promise<void>}\n */\nfireauth.Auth.prototype.signInWithIdTokenResponse =\n    function(idTokenResponse) {\n  var self = this;\n  var options = {};\n  options['apiKey'] = self.app_().options['apiKey'];\n  options['authDomain'] = self.app_().options['authDomain'];\n  options['appName'] = self.app_().name;\n  if (self.emulatorConfig_) {\n      options['emulatorConfig'] = self.emulatorConfig_;\n  }\n  // Wait for state to be ready.\n  // This is used internally and is also used for redirect sign in so there is\n  // no need for waiting for redirect result to resolve since redirect result\n  // depends on it.\n  return this.authStateLoaded_.then(function() {\n    // Initialize an Auth user using the provided ID token response.\n    return fireauth.AuthUser.initializeFromIdTokenResponse(\n        options,\n        idTokenResponse,\n        /** @type {!fireauth.storage.RedirectUserManager} */ (\n            self.redirectUserStorageManager_),\n        // Pass frameworks so they are logged in getAccountInfo while populating\n        // the user info.\n        self.getFramework());\n  }).then(function(user) {\n    // Check if the same user is already signed in.\n    if (self.currentUser_() &&\n        user['uid'] == self.currentUser_()['uid']) {\n      // Same user signed in. Update user data and notify Auth listeners.\n      // No need to resubscribe to user events.\n      self.currentUser_().copy(user);\n      return self.handleUserStateChange_(user);\n    }\n    // New user.\n    // Set current user and attach all listeners to it.\n    self.setCurrentUser_(user);\n    // Enable popup and redirect events.\n    user.enablePopupRedirect();\n    // Save user changes.\n    return self.handleUserStateChange_(user);\n  }).then(function() {\n    // Notify external Auth listeners only when state is ready.\n    self.notifyAuthListeners_();\n  });\n};\n\n\n/**\n * Updates the current auth user and attaches event listeners to changes on it.\n * Also removes all event listeners from previously signed in user.\n * @param {?fireauth.AuthUser} user The current user instance.\n * @private\n */\nfireauth.Auth.prototype.setCurrentUser_ = function(user) {\n  // Must be called first before updating currentUser reference.\n  this.attachEventListeners_(user);\n  // Update currentUser property.\n  fireauth.object.setReadonlyProperty(this, 'currentUser', user);\n  if (user) {\n    // If a user is available, set the language code on it and set current Auth\n    // instance as language code change dispatcher.\n    this.setUserLanguage_(user);\n    // Set the current frameworks used on the user and set current Auth instance\n    // as the framework change dispatcher.\n    this.setUserFramework_(user);\n    // If a user is available, set the emulator config on it and set current\n    // Auth instance as emulator config change dispatcher.\n    this.setUserEmulatorConfig_(user);\n  }\n};\n\n\n/**\n * Signs out the current user while deleting the Auth user from storage and\n * removing all listeners from it.\n * @return {!goog.Promise<void>}\n */\nfireauth.Auth.prototype.signOut = function() {\n  var self = this;\n  // Wait for final state to be ready first, otherwise a signed out user could\n  // come back to life.\n  var p = this.redirectStateIsReady_.then(function() {\n    // Clear any cached redirect result on sign out, even if user is already\n    // signed out. For example, sign in could fail due to account conflict\n    // error, the error in redirect result should still be cleared. There is\n    // also the use case where you keep a reference to a signed out user and\n    // call signedOutUser.linkWithRedirect(provider). Even though the user is\n    // signed out, getRedirectResult() will resolve with the modified signed\n    // out user. This could also throw an error\n    // (provider already linked, etc).\n    if (self.authEventManager_) {\n      self.authEventManager_.clearRedirectResult();\n    }\n    // Ignore if already signed out.\n    if (!self.currentUser_()) {\n      return goog.Promise.resolve();\n    }\n    // Detach all event listeners.\n    // Set current user to null.\n    self.setCurrentUser_(null);\n    // Remove current user from storage\n    return /** @type {!fireauth.storage.UserManager} */ (\n        self.userStorageManager_).removeCurrentUser()\n        .then(function() {\n          // Notify external Auth listeners of this Auth change event.\n          self.notifyAuthListeners_();\n        });\n  });\n  return /** @type {!goog.Promise<void>} */ (this.registerPendingPromise_(p));\n};\n\n\n/**\n * @return {!goog.Promise} A promise that resolved when any stored redirect user\n *     is loaded and removed from session storage and then stored locally.\n * @private\n */\nfireauth.Auth.prototype.initRedirectUser_ = function() {\n  var self = this;\n  var authDomain = this.app_().options['authDomain'];\n  // Get any saved redirect user and delete from session storage.\n  // Override user's authDomain with app's authDomain if there is a mismatch.\n  var p = /** @type {!fireauth.storage.RedirectUserManager} */ (\n      this.redirectUserStorageManager_).getRedirectUser(authDomain)\n          .then(function(user) {\n            // Save redirect user.\n            self.redirectUser_ = user;\n            if (user) {\n              // Set redirect storage manager on user.\n              user.setRedirectStorageManager(\n                  /** @type {!fireauth.storage.RedirectUserManager} */ (\n                      self.redirectUserStorageManager_));\n            }\n            // Delete redirect user.\n            return /** @type {!fireauth.storage.RedirectUserManager} */ (\n                self.redirectUserStorageManager_).removeRedirectUser();\n          });\n  return /** @type {!goog.Promise<undefined>} */ (\n      this.registerPendingPromise_(p));\n};\n\n\n/**\n * Loads the initial Auth state for current application from web storage and\n * initializes Auth user accordingly to reflect that state. This routine does\n * not wait for any pending redirect result to be resolved.\n * @return {!goog.Promise<undefined>} Promise that resolves when state is ready,\n *     loaded from storage.\n * @private\n */\nfireauth.Auth.prototype.initAuthState_ = function() {\n  // Load current user from storage.\n  var self = this;\n  var authDomain = this.app_().options['authDomain'];\n  // Get any saved redirected user first.\n  var p = this.initRedirectUser_().then(function() {\n    // Override user's authDomain with app's authDomain if there is a mismatch.\n    return /** @type {!fireauth.storage.UserManager} */ (\n      self.userStorageManager_).getCurrentUser(authDomain, self.emulatorConfig_);\n  }).then(function(user) {\n    // Logged in user.\n    if (user) {\n      // Set redirect storage manager on user.\n      user.setRedirectStorageManager(\n          /** @type {!fireauth.storage.RedirectUserManager} */ (\n              self.redirectUserStorageManager_));\n      // If the current user is undergoing a redirect operation, do not reload\n      // as that could could potentially delete the user if the token is\n      // expired. Instead any token problems will be detected via the\n      // verifyAssertion flow or the remaining flow. This is critical for\n      // reauthenticateWithRedirect as this flow is potentially used to recover\n      // from a token expiration error.\n      if (self.redirectUser_ &&\n          self.redirectUser_.getRedirectEventId() ==\n          user.getRedirectEventId()) {\n        return user;\n      }\n      // Confirm user valid first before setting listeners.\n      return user.reload().then(function() {\n        // Force user saving after reload as state change listeners not\n        // subscribed yet below via setCurrentUser_. Changes may have happened\n        // externally such as email actions or changes on another device.\n        return self.userStorageManager_.setCurrentUser(user).then(function() {\n          return user;\n        });\n      }).thenCatch(function(error) {\n        if (error['code'] == 'auth/network-request-failed') {\n          // Do not delete the user from storage if connection is lost or app is\n          // offline.\n          return user;\n        }\n        // Invalid user, could be deleted, remove from storage and resolve with\n        // null.\n        return /** @type {!fireauth.storage.UserManager} */(\n            self.userStorageManager_).removeCurrentUser();\n      });\n    }\n    // No logged in user, resolve with null;\n    return null;\n  }).then(function(user) {\n    // Even though state not ready yet pending any redirect result.\n    // Current user needs to be available for link with redirect to complete.\n    // This will also set listener on the user changes in case state changes\n    // occur they would get updated in storage too.\n    self.setCurrentUser_(user || null);\n  });\n  // In case the app is deleted before it is initialized with state from\n  // storage.\n  return /** @type {!goog.Promise<undefined>} */ (\n      this.registerPendingPromise_(p));\n};\n\n\n/**\n * After initial Auth state is loaded, waits for any pending redirect result,\n * resolves it and then adds the external Auth state change listeners and\n * triggers first state of all observers.\n * @return {!goog.Promise<undefined>} Promise that resolves when state is ready\n *     taking into account any pending redirect result.\n * @private\n */\nfireauth.Auth.prototype.initAuthRedirectState_ = function() {\n  var self = this;\n  // Wait first for state to be loaded from storage.\n  return this.authStateLoaded_.then(function() {\n    // Resolve any pending redirect result.\n    return self.getRedirectResultWithoutClearing_();\n  }).thenCatch(function(error) {\n    // Ignore any error in the process. Redirect could be not supported.\n    return;\n  }).then(function() {\n    // Make sure instance was not deleted before proceeding.\n    if (self.deleted_) {\n      return;\n    }\n    // Between init Auth state and get redirect result resolution there\n    // could have been a sign in attempt in another window.\n    // Force sync and then add listener to run sync on change below.\n    return self.getSyncAuthUserChanges_();\n  }).thenCatch(function(error) {\n    // Ignore any error in the process.\n    return;\n  }).then(function() {\n    // Now that final state is ready, make sure instance was not deleted before\n    // proceeding.\n    if (self.deleted_) {\n      return;\n    }\n    // Initial state has been resolved.\n    self.isStateResolved_ = true;\n    // Add user state change listener so changes are synchronized with\n    // other windows and tabs.\n    /** @type {!fireauth.storage.UserManager} */ (self.userStorageManager_\n        ).addCurrentUserChangeListener(self.getSyncAuthUserChanges_);\n  });\n};\n\n\n/**\n * Synchronizes current Auth to stored auth state, used when external state\n * changes occur.\n * @return {!goog.Promise<void>}\n * @private\n */\nfireauth.Auth.prototype.syncAuthUserChanges_ = function() {\n  // Get Auth user state from storage and compare to current state.\n  // Safe to run when no external change is detected.\n  var self = this;\n  var authDomain = this.app_().options['authDomain'];\n  // Override user's authDomain with app's authDomain if there is a mismatch.\n  return /** @type {!fireauth.storage.UserManager} */ (\n      this.userStorageManager_).getCurrentUser(authDomain)\n      .then(function(user) {\n        // In case this was deleted.\n        if (self.deleted_) {\n          return;\n        }\n        // Since the authDomain could be modified here, saving to storage here\n        // could trigger an infinite loop of changes between this tab and\n        // another tab using different Auth domain but since sync Auth user\n        // changes does not save changes to storage, except for getToken below\n        // if the token needs refreshing but will stop triggering the first time\n        // the token is refreshed on one of the first tab that refreshes it.\n        // The latter should not happen anyway since getToken should be valid\n        // at all times since anything that triggers the storage change should\n        // have communicated with the backend and that requires a valid token.\n        // In addition, authDomain difference is an edge case to begin with.\n\n        // If the same user is to be synchronized.\n        if (self.currentUser_() &&\n            user &&\n            self.currentUser_().hasSameUserIdAs(user)) {\n          // Data update, simply copy data changes.\n          self.currentUser_().copy(user);\n          // If tokens changed from previous user tokens, this will trigger\n          // notifyAuthListeners_.\n          return self.currentUser_().getIdToken();\n        } else if (!self.currentUser_() && !user) {\n          // No change, do nothing (was signed out and remained signed out).\n          return;\n        } else {\n          // Update current Auth state. Either a new login or logout.\n          self.setCurrentUser_(user);\n          // If a new user is signed in, enabled popup and redirect on that\n          // user.\n          if (user) {\n            user.enablePopupRedirect();\n            // Set redirect storage manager on user.\n            user.setRedirectStorageManager(\n                /** @type {!fireauth.storage.RedirectUserManager} */ (\n                    self.redirectUserStorageManager_));\n          }\n          if (self.authEventManager_) {\n            self.authEventManager_.subscribe(self);\n          }\n          // Notify external Auth changes of Auth change event.\n          self.notifyAuthListeners_();\n        }\n      });\n};\n\n\n/**\n * Updates the language code on the provided user and configures the user to\n * listen to the Auth instance for any language code changes.\n * @param {!fireauth.AuthUser} user The user to whose language needs to be set.\n * @private\n */\nfireauth.Auth.prototype.setUserLanguage_ = function(user) {\n  // Sets the current language code on the user.\n  user.setLanguageCode(this.getLanguageCode());\n  // Sets current Auth instance as language code change dispatcher on the user.\n  user.setLanguageCodeChangeDispatcher(this);\n};\n\n\n/**\n * Updates the emulator config on the provided user and configures the user\n *   to listen to the Auth instance for any emulator config changes.\n * @param {!fireauth.AuthUser} user The user to whose emulator config needs\n *   to be set.\n * @private\n */\nfireauth.Auth.prototype.setUserEmulatorConfig_ = function(user) {\n  // Sets the current emulator config on the user.\n  user.setEmulatorConfig(this.emulatorConfig_);\n  // Sets current Auth instance as emulator config change dispatcher on the\n  // user.\n  user.setEmulatorConfigChangeDispatcher(this);\n}\n\n\n/**\n * Handles user state changes.\n * @param {!fireauth.AuthUser} user The user which triggered the state changes.\n * @return {!goog.Promise} The promise that resolves when state changes are\n *     handled.\n * @private\n */\nfireauth.Auth.prototype.handleUserStateChange_ = function(user) {\n  // Save Auth user state changes.\n  return /** @type {!fireauth.storage.UserManager} */ (\n      this.userStorageManager_).setCurrentUser(user);\n};\n\n\n/**\n * Handles user token changes.\n * @param {!Object} event The token change event.\n * @private\n */\nfireauth.Auth.prototype.handleUserTokenChange_ = function(event) {\n  // This is only called when user is ready and Auth state has been resolved.\n  // Notify external Auth change listeners.\n  this.notifyAuthListeners_();\n  // Save user token changes.\n  this.handleUserStateChange_(/** @type {!fireauth.AuthUser} */ (\n      this.currentUser_()));\n};\n\n\n/**\n * Handles user deletion events.\n * @param {!Object} event The user delete event.\n * @private\n */\nfireauth.Auth.prototype.handleUserDelete_ = function(event) {\n  // A deleted user will be treated like a sign out event.\n  this.signOut();\n};\n\n\n/**\n * Handles user invalidation events.\n * @param {!Object} event The user invalidation event.\n * @private\n */\nfireauth.Auth.prototype.handleUserInvalidated_ = function(event) {\n  // An invalidated user will be treated like a sign out event.\n  this.signOut();\n};\n\n\n/**\n * Detaches all previous listeners on current user and reattach new listeners to\n * provided user if not null.\n * @param {?fireauth.AuthUser} user The user to attach event listeners to.\n * @private\n */\nfireauth.Auth.prototype.attachEventListeners_ = function(user) {\n  // Remove existing event listeners from previous current user if available.\n  if (this.currentUser_()) {\n    this.currentUser_().removeStateChangeListener(\n        this.userStateChangeListener_);\n    goog.events.unlisten(\n        this.currentUser_(),\n        fireauth.UserEventType.TOKEN_CHANGED,\n        this.userTokenChangeListener_);\n    goog.events.unlisten(\n        this.currentUser_(),\n        fireauth.UserEventType.USER_DELETED,\n        this.userDeleteListener_);\n    goog.events.unlisten(\n        this.currentUser_(),\n        fireauth.UserEventType.USER_INVALIDATED,\n        this.userInvalidatedListener_);\n    // Stop proactive token refresh on the current user.\n    this.currentUser_().stopProactiveRefresh();\n  }\n  // If a new user is provided, attach event listeners to state, token, user\n  // invalidation and delete events.\n  if (user) {\n    user.addStateChangeListener(this.userStateChangeListener_);\n    goog.events.listen(\n        user,\n        fireauth.UserEventType.TOKEN_CHANGED,\n        this.userTokenChangeListener_);\n    goog.events.listen(\n        user,\n        fireauth.UserEventType.USER_DELETED,\n        this.userDeleteListener_);\n     goog.events.listen(\n        user,\n        fireauth.UserEventType.USER_INVALIDATED,\n        this.userInvalidatedListener_);\n    // Start proactive token refresh on new user if there is at least one\n    // Firebase service subscribed to Auth changes.\n    if (this.firebaseServices_ > 0) {\n      user.startProactiveRefresh();\n    }\n  }\n};\n\n\n/**\n * Signs in with ID token promise provider.\n * @param {!goog.Promise<!Object>} idTokenPromise\n *     The rpc handler method that returns a promise which resolves with an ID\n *     token.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n * @private\n */\nfireauth.Auth.prototype.signInWithIdTokenProvider_ = function(idTokenPromise) {\n  var self = this;\n  var credential = null;\n  var additionalUserInfo = null;\n  return /** @type {!goog.Promise<!fireauth.AuthEventManager.Result>} */ (\n      this.registerPendingPromise_(\n          idTokenPromise\n          .then(function(idTokenResponse) {\n            // Get credential if available in the response.\n            credential = fireauth.AuthProvider.getCredentialFromResponse(\n                idTokenResponse);\n            // Get additional IdP data if available in the response.\n            additionalUserInfo = fireauth.AdditionalUserInfo.fromPlainObject(\n                idTokenResponse);\n            // When custom token is exchanged for idToken, continue sign in with\n            // ID token and return firebase Auth user.\n            return self.signInWithIdTokenResponse(idTokenResponse);\n          }, function(error) {\n            // Catch the MFA_REQUIRED error rejected in ID token promise and\n            // repackage it into a multi-factor error with additional IdP data\n            // if available.\n            var multiFactorError = null;\n            if (error && error['code'] === 'auth/multi-factor-auth-required') {\n              multiFactorError = fireauth.MultiFactorError.fromPlainObject(\n                  error.toPlainObject(),\n                  self,\n                  goog.bind(self.handleMultiFactorIdTokenResolver_, self));\n            }\n            throw multiFactorError || error;\n          })\n          .then(function() {\n            // Resolve promise with a readonly user credential object.\n            return fireauth.object.makeReadonlyCopy({\n              // Return the current user reference.\n              'user': self.currentUser_(),\n              // Return any credential passed from the backend.\n              'credential': credential,\n              // Return any additional IdP data passed from the backend.\n              'additionalUserInfo': additionalUserInfo,\n              // Sign in operation type.\n              'operationType': fireauth.constants.OperationType.SIGN_IN\n            });\n          })));\n};\n\n\n/**\n * Completes multi-factor sign-in with ID token response and additional IdP data\n * if available.\n * @param {{idToken: string, refreshToken: string}} response The successful\n *     sign-in response containing the new ID tokens.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>} A Promise that\n *     resolves with the updated `UserCredential`.\n * @private\n */\nfireauth.Auth.prototype.handleMultiFactorIdTokenResolver_ =\n    function(response) {\n  var self = this;\n  // Wait for state to be ready and then finish sign-in.\n  return this.redirectStateIsReady_.then(function() {\n    return self.signInWithIdTokenProvider_(goog.Promise.resolve(response));\n  });\n};\n\n\n/**\n * Initializes the Auth state change observer returned by the\n * firebase.INTERNAL.createSubscribe helper.\n * @param {!firebase.Observer} observer The Auth state change observer.\n * @private\n */\nfireauth.Auth.prototype.initIdTokenChangeObserver_ = function(observer) {\n  var self = this;\n  // Adds a listener that will transmit the event everytime it's called.\n  this.addAuthTokenListener(function(accessToken) {\n    observer.next(self.currentUser_());\n  });\n};\n\n\n/**\n * Initializes the user state change observer returned by the\n * firebase.INTERNAL.createSubscribe helper.\n * @param {!firebase.Observer} observer The user state change observer.\n * @private\n */\nfireauth.Auth.prototype.initUserStateObserver_ = function(observer) {\n  var self = this;\n  // Adds a listener that will transmit the event everytime it's called.\n  this.addUserChangeListener_(function(accessToken) {\n    observer.next(self.currentUser_());\n  });\n};\n\n\n/**\n * Adds an observer for Auth state changes, we need to wrap the call as\n * the args checking code needs a method defined on the prototype this way,\n * not within the constructor, and we also have to implement the behavior\n * that will trigger an observer right away if state is ready.\n * @param {!firebase.Observer|function(?fireauth.AuthUser)}\n *     nextOrObserver An observer object or a function triggered on change.\n * @param {function(!fireauth.AuthError)=} opt_error Optional A function\n *     triggered on Auth error.\n * @param {function()=} opt_completed Optional A function triggered when the\n *     observer is removed.\n * @return {!function()} The unsubscribe function for the observer.\n */\nfireauth.Auth.prototype.onIdTokenChanged = function(\n    nextOrObserver, opt_error, opt_completed) {\n  var self = this;\n  // State already determined. Trigger immediately, otherwise initState will\n  // take care of notifying all pending listeners on initialization.\n  // In this case we do not trigger synchronously and trigger via a resolved\n  // promise as required by specs.\n  if (this.isStateResolved_) {\n    // The observer cannot be called synchronously. We're using the\n    // native Promise implementation as otherwise it creates weird behavior\n    // where the order of promises resolution would not be as expected.\n    // It is due to the fact fireauth and firebase.app use their own\n    // and different promises library and this leads to calls resolutions order\n    // being different from the promises registration order.\n    Promise.resolve().then(function() {\n      if (typeof nextOrObserver === 'function') {\n        nextOrObserver(self.currentUser_());\n      } else if (typeof nextOrObserver['next'] === 'function') {\n        nextOrObserver['next'](self.currentUser_());\n      }\n    });\n  }\n  return this.onIdTokenChanged_(\n      /** @type {!firebase.Observer|function(*)|undefined} */ (nextOrObserver),\n      /** @type {function(!Error)|undefined} */ (opt_error),\n      opt_completed);\n};\n\n\n/**\n * Adds an observer for user state changes, we need to wrap the call as\n * the args checking code needs a method defined on the prototype this way,\n * not within the constructor, and we also have to implement the behavior\n * that will trigger an observer right away if state is ready.\n * @param {!firebase.Observer|function(?fireauth.AuthUser)}\n *     nextOrObserver An observer object or a function triggered on change.\n * @param {function(!fireauth.AuthError)=} opt_error Optional A function\n *     triggered on Auth error.\n * @param {function()=} opt_completed Optional A function triggered when the\n *     observer is removed.\n * @return {!function()} The unsubscribe function for the observer.\n */\nfireauth.Auth.prototype.onAuthStateChanged = function(\n    nextOrObserver, opt_error, opt_completed) {\n  var self = this;\n  // State already determined. Trigger immediately, otherwise initState will\n  // take care of notifying all pending listeners on initialization.\n  // In this case we do not trigger synchronously and trigger via a resolved\n  // promise as required by specs.\n  if (this.isStateResolved_) {\n    // The observer cannot be called synchronously. We're using the\n    // native Promise implementation as otherwise it creates weird behavior\n    // where the order of promises resolution would not be as expected.\n    // It is due to the fact fireauth and firebase.app use their own\n    // and different promises library and this leads to calls resolutions order\n    // being different from the promises registration order.\n    Promise.resolve().then(function() {\n      // This ensures that the first time notifyAuthListeners_ is triggered,\n      // it has the correct UID before triggering the user state change\n      // listeners.\n      self.userStateChangeUid_ = self.getUid();\n      if (typeof nextOrObserver === 'function') {\n        nextOrObserver(self.currentUser_());\n      } else if (typeof nextOrObserver['next'] === 'function') {\n        nextOrObserver['next'](self.currentUser_());\n      }\n    });\n  }\n  return this.onUserStateChanged_(\n      /** @type {!firebase.Observer|function(*)|undefined} */ (nextOrObserver),\n      /** @type {function(!Error)|undefined} */ (opt_error),\n      opt_completed);\n};\n\n\n/**\n * Returns an STS token. If the cached one is unexpired it is directly returned.\n * Otherwise the existing ID token or refresh token is exchanged for a new one.\n * If there is no user signed in, returns null.\n *\n * This method is called getIdTokenInternal as the symbol getIdToken is not\n * obfuscated, which could lead to developers incorrectly calling\n * firebase.auth().getIdToken().\n *\n * @param {boolean=} opt_forceRefresh Whether to force refresh token exchange.\n * @return {!goog.Promise<?Object>}\n */\nfireauth.Auth.prototype.getIdTokenInternal = function(opt_forceRefresh) {\n  var self = this;\n  // Wait for state to be ready.\n  var p = this.redirectStateIsReady_.then(function() {\n    // Call user's underlying getIdToken method.\n    if (self.currentUser_()) {\n      return self.currentUser_().getIdToken(opt_forceRefresh)\n          .then(function(stsAccessToken) {\n            // This is used internally by other services which expect the access\n            // token to be returned in an object.\n            return {\n              'accessToken': stsAccessToken\n            };\n          });\n    }\n    // No logged in user, return null token.\n    return null;\n  });\n  return /** @type {!goog.Promise<?Object>} */ (\n      this.registerPendingPromise_(p));\n};\n\n\n/**\n * Signs in a user asynchronously using a custom token and returns any\n * additional user info data or credentials returned form the backend.\n * @param {string} token The custom token to sign in with.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.Auth.prototype.signInWithCustomToken = function(token) {\n  var self = this;\n  // Wait for the redirect state to be determined before proceeding. If critical\n  // errors like web storage unsupported are detected, fail before RPC, instead\n  // of after.\n  return this.redirectStateIsReady_.then(function() {\n    return self.signInWithIdTokenProvider_(\n        self.getRpcHandler().verifyCustomToken(token));\n  }).then(function(result) {\n    var user = result['user'];\n    // Manually sets the isAnonymous flag to false as the GetAccountInfo\n    // response will look like an anonymous user (no credentials visible).\n    user.updateProperty('isAnonymous', false);\n    // Save isAnonymous flag changes to current user in storage.\n    self.handleUserStateChange_(user);\n    return result;\n  });\n};\n\n\n/**\n * Sign in using an email and password and returns any additional user info\n * data or credentials returned form the backend.\n * @param {string} email The email to sign in with.\n * @param {string} password The password to sign in with.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.Auth.prototype.signInWithEmailAndPassword =\n    function(email, password) {\n  var self = this;\n  // Wait for the redirect state to be determined before proceeding. If critical\n  // errors like web storage unsupported are detected, fail before RPC, instead\n  // of after.\n  return this.redirectStateIsReady_.then(function() {\n    return self.signInWithIdTokenProvider_(\n        self.getRpcHandler().verifyPassword(email, password));\n  });\n};\n\n\n/**\n * Creates a new email and password account and returns any additional user\n * info data or credentials returned form the backend.\n * @param {string} email The email to sign up with.\n * @param {string} password The password to sign up with.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.Auth.prototype.createUserWithEmailAndPassword =\n    function(email, password) {\n  var self = this;\n  // Wait for the redirect state to be determined before proceeding. If critical\n  // errors like web storage unsupported are detected, fail before RPC, instead\n  // of after.\n  return this.redirectStateIsReady_.then(function() {\n    return self.signInWithIdTokenProvider_(\n        self.getRpcHandler().createAccount(email, password));\n  });\n};\n\n\n/**\n * Logs into Firebase with the given 3rd party credentials and returns any\n * additional user info data or credentials returned form the backend.\n * @param {!fireauth.AuthCredential} credential The Auth credential.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.Auth.prototype.signInWithCredential = function(credential) {\n  // Credential could be extended in the future, so leave it to credential to\n  // decide how to retrieve ID token.\n  var self = this;\n  // Wait for the redirect state to be determined before proceeding. If critical\n  // errors like web storage unsupported are detected, fail before RPC, instead\n  // of after.\n  return this.redirectStateIsReady_.then(function() {\n    // Return the full response object and not just the user.\n    return self.signInWithIdTokenProvider_(\n        credential.getIdTokenProvider(self.getRpcHandler()));\n  });\n};\n\n\n/**\n * Logs into Firebase with the given 3rd party credentials and returns any\n * additional user info data or credentials returned form the backend. It has\n * been deprecated in favor of signInWithCredential.\n * @param {!fireauth.AuthCredential} credential The Auth credential.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.Auth.prototype.signInAndRetrieveDataWithCredential =\n    function(credential) {\n  fireauth.deprecation.log(\n      fireauth.deprecation.Deprecations.SIGN_IN_WITH_CREDENTIAL);\n  return this.signInWithCredential(credential);\n};\n\n\n/**\n * Signs in a user anonymously and returns any additional user info data or\n * credentials returned form the backend.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.Auth.prototype.signInAnonymously = function() {\n  var self = this;\n  // Wait for the redirect state to be determined before proceeding. If critical\n  // errors like web storage unsupported are detected, fail before RPC, instead\n  // of after.\n  return this.redirectStateIsReady_.then(function() {\n    var user = self.currentUser_();\n    // If an anonymous user is already signed in, no need to sign him again.\n    if (user && user['isAnonymous']) {\n      var additionalUserInfo = fireauth.object.makeReadonlyCopy({\n        'providerId': null,\n        'isNewUser': false\n      });\n      return fireauth.object.makeReadonlyCopy({\n        // Return the signed in user reference.\n        'user': user,\n        // Do not return credential for anonymous user.\n        'credential': null,\n        // Return any additional IdP data.\n        'additionalUserInfo': additionalUserInfo,\n        // Sign in operation type.\n        'operationType': fireauth.constants.OperationType.SIGN_IN\n      });\n    } else {\n      // No anonymous user currently signed in.\n      return self.signInWithIdTokenProvider_(\n          self.getRpcHandler().signInAnonymously())\n          .then(function(result) {\n            var user = result['user'];\n            // Manually sets the isAnonymous flag to true as\n            // initializeFromIdTokenResponse uses the default value of false and\n            // even though getAccountInfo sets that to true, it will be reverted\n            // to false in reloadWithoutSaving.\n            // TODO: consider optimizing this and cleaning these manual\n            // overwrites.\n            user.updateProperty('isAnonymous', true);\n            // Save isAnonymous flag changes to current user in storage.\n            self.handleUserStateChange_(user);\n            return result;\n          });\n    }\n  });\n};\n\n\n/**\n * @return {string} The key used for storing Auth state.\n */\nfireauth.Auth.prototype.getStorageKey = function() {\n  return fireauth.util.createStorageKey(\n      this.app_().options['apiKey'],\n      this.app_().name);\n};\n\n\n/**\n * @return {!firebase.app.App} The Firebase App this auth object is connected\n *     to.\n * @private\n */\nfireauth.Auth.prototype.app_ = function() {\n  return this['app'];\n};\n\n\n/**\n * @return {!fireauth.AuthSettings} The settings for this Auth object.\n * @private\n */\nfireauth.Auth.prototype.settings_ = function () {\n  return this['settings'];\n};\n\n\n/**\n * @return {!fireauth.RpcHandler} The RPC handler.\n */\nfireauth.Auth.prototype.getRpcHandler = function() {\n  return this.rpcHandler_;\n};\n\n\n/**\n * @return {?fireauth.AuthUser} The currently logged in user.\n * @private\n */\nfireauth.Auth.prototype.currentUser_ = function() {\n  return this['currentUser'];\n};\n\n\n/** @return {?string} The current user UID if available, null if not. */\nfireauth.Auth.prototype.getUid = function() {\n  return (this.currentUser_() && this.currentUser_()['uid']) || null;\n};\n\n\n/**\n * @return {?string} The last cached access token.\n * @private\n */\nfireauth.Auth.prototype.getLastAccessToken_ = function() {\n  return (this.currentUser_() && this.currentUser_()['_lat']) || null;\n};\n\n\n\n/**\n * Called internally on Auth state change to notify listeners.\n * @private\n */\nfireauth.Auth.prototype.notifyAuthListeners_ = function() {\n  // Only run when state is resolved. After state is resolved, the Auth listener\n  // will always trigger.\n  if (this.isStateResolved_) {\n    for (var i = 0; i < this.authListeners_.length; i++) {\n      if (this.authListeners_[i]) {\n        this.authListeners_[i](this.getLastAccessToken_());\n      }\n    }\n    // Trigger user change only if UID changed.\n    if (this.userStateChangeUid_ !== this.getUid() &&\n        this.userChangeListeners_.length) {\n      // Update user state change UID.\n      this.userStateChangeUid_ = this.getUid();\n      // Trigger all subscribed user state change listeners.\n      for (var i = 0; i < this.userChangeListeners_.length; i++) {\n        if (this.userChangeListeners_[i]) {\n          this.userChangeListeners_[i](this.getLastAccessToken_());\n        }\n      }\n    }\n  }\n};\n\n\n/**\n * Attaches a listener function to Auth state change.\n * This is used only by internal Firebase services.\n * @param {!function(?string)} listener The auth state change listener.\n */\nfireauth.Auth.prototype.addAuthTokenListenerInternal = function(listener) {\n  this.addAuthTokenListener(listener);\n  // This is not exact science but should be good enough to detect Firebase\n  // services subscribing to Auth token changes.\n  // This is needed to start proactive token refresh on a user.\n  this.firebaseServices_++;\n  if (this.firebaseServices_ > 0 && this.currentUser_()) {\n    // Start proactive token refresh on the current user.\n    this.currentUser_().startProactiveRefresh();\n  }\n};\n\n\n/**\n * Detaches the provided listener from Auth state change event.\n * This is used only by internal Firebase services.\n * @param {!function(?string)} listener The Auth state change listener.\n */\nfireauth.Auth.prototype.removeAuthTokenListenerInternal = function(listener) {\n  // This is unlikely to be called by Firebase services. Services are unlikely\n  // to remove Auth token listeners.\n  // Make sure listener is still subscribed before decrementing.\n  var self = this;\n  goog.array.forEach(this.authListeners_, function(ele) {\n    // This covers the case where the same listener is subscribed more than\n    // once.\n    if (ele == listener) {\n      self.firebaseServices_--;\n    }\n  });\n  if (this.firebaseServices_ < 0) {\n    this.firebaseServices_ = 0;\n  }\n  if (this.firebaseServices_ == 0 && this.currentUser_()) {\n    // Stop proactive token refresh on the current user.\n    this.currentUser_().stopProactiveRefresh();\n  }\n  this.removeAuthTokenListener(listener);\n};\n\n\n/**\n * Attaches a listener function to Auth state change.\n * @param {!function(?string)} listener The Auth state change listener.\n */\nfireauth.Auth.prototype.addAuthTokenListener = function(listener) {\n  var self = this;\n  // Save listener.\n  this.authListeners_.push(listener);\n  // Make sure redirect state is ready and then trigger listener.\n  this.registerPendingPromise_(this.redirectStateIsReady_.then(function() {\n    // Do nothing if deleted.\n    if (self.deleted_) {\n      return;\n    }\n    // Make sure listener is still subscribed.\n    if (goog.array.contains(self.authListeners_, listener)) {\n      // Trigger the first call for this now that redirect state is resolved.\n      listener(self.getLastAccessToken_());\n    }\n  }));\n};\n\n\n/**\n * Detaches the provided listener from Auth state change event.\n * @param {!function(?string)} listener The Auth state change listener.\n */\nfireauth.Auth.prototype.removeAuthTokenListener = function(listener) {\n  // Remove from Auth listeners.\n  goog.array.removeAllIf(this.authListeners_, function(ele) {\n    return ele == listener;\n  });\n};\n\n\n/**\n * Attaches a listener function to user state change.\n * @param {!function(?string)} listener The user state change listener.\n * @private\n */\nfireauth.Auth.prototype.addUserChangeListener_ = function(listener) {\n  var self = this;\n  // Save listener.\n  this.userChangeListeners_.push(listener);\n  // Make sure redirect state is ready and then trigger listener.\n  this.registerPendingPromise_(this.redirectStateIsReady_.then(function() {\n    // Do nothing if deleted.\n    if (self.deleted_) {\n      return;\n    }\n    // Make sure listener is still subscribed.\n    if (goog.array.contains(self.userChangeListeners_, listener)) {\n      // Confirm UID change before triggering.\n      if (self.userStateChangeUid_ !== self.getUid()) {\n        self.userStateChangeUid_ = self.getUid();\n        // Trigger the first call for this now that redirect state is resolved.\n        listener(self.getLastAccessToken_());\n      }\n    }\n  }));\n};\n\n\n/**\n * Deletes the Auth instance, handling cancellation of all pending async Auth\n * operations.\n * @return {!Promise<void>}\n */\nfireauth.Auth.prototype.delete = function() {\n  this.deleted_ = true;\n  // Cancel all pending promises.\n  for (var i = 0; i < this.pendingPromises_.length; i++) {\n    this.pendingPromises_[i].cancel(fireauth.authenum.Error.MODULE_DESTROYED);\n  }\n\n  // Empty pending promises array.\n  this.pendingPromises_ = [];\n  // Remove current user change listener.\n  if (this.userStorageManager_) {\n    this.userStorageManager_.removeCurrentUserChangeListener(\n        this.getSyncAuthUserChanges_);\n  }\n  // Unsubscribe from Auth event handling.\n  if (this.authEventManager_) {\n    this.authEventManager_.unsubscribe(this);\n    this.authEventManager_.clearRedirectResult();\n  }\n  return Promise.resolve();\n};\n\n\n/** @return {boolean} Whether Auth instance has pending promises. */\nfireauth.Auth.prototype.hasPendingPromises = function() {\n  return this.pendingPromises_.length != 0;\n};\n\n\n/**\n * Takes in a pending promise, saves it and adds a clean up callback which\n * forgets the pending promise after it is fulfilled and echoes the promise\n * back.\n * @param {!goog.Promise<*, *>|!goog.Promise<void>} p The pending promise.\n * @return {!goog.Promise<*, *>|!goog.Promise<void>}\n * @private\n */\nfireauth.Auth.prototype.registerPendingPromise_ = function(p) {\n  var self = this;\n  // Save created promise in pending list.\n  this.pendingPromises_.push(p);\n  p.thenAlways(function() {\n    // When fulfilled, remove from pending list.\n    goog.array.remove(self.pendingPromises_, p);\n  });\n  // Return the promise.\n  return p;\n};\n\n\n/**\n * Gets the list of possible sign in methods for the given email address.\n * @param {string} email The email address.\n * @return {!goog.Promise<!Array<string>>}\n */\nfireauth.Auth.prototype.fetchSignInMethodsForEmail = function(email) {\n  return /** @type {!goog.Promise<!Array<string>>} */ (\n      this.registerPendingPromise_(\n          this.getRpcHandler().fetchSignInMethodsForIdentifier(email)));\n};\n\n\n/**\n * @param {string} emailLink The email link.\n * @return {boolean} Whether the link is a sign in with email link.\n */\nfireauth.Auth.prototype.isSignInWithEmailLink = function(emailLink) {\n  return  !!fireauth.EmailAuthProvider\n      .getActionCodeUrlFromSignInEmailLink(emailLink);\n};\n\n\n/**\n * Sends the sign-in with email link for the email account provided.\n * @param {string} email The email account to sign in with.\n * @param {!Object} actionCodeSettings The action code settings object.\n * @return {!goog.Promise<void>}\n */\nfireauth.Auth.prototype.sendSignInLinkToEmail = function(\n    email, actionCodeSettings) {\n  var self = this;\n  return this.registerPendingPromise_(\n      // Wrap in promise as ActionCodeSettings constructor could throw a\n      // synchronous error if invalid arguments are specified.\n      goog.Promise.resolve()\n          .then(function() {\n            var actionCodeSettingsBuilder =\n                new fireauth.ActionCodeSettings(actionCodeSettings);\n            if (!actionCodeSettingsBuilder.canHandleCodeInApp()) {\n              throw new fireauth.AuthError(\n                  fireauth.authenum.Error.ARGUMENT_ERROR,\n                  fireauth.ActionCodeSettings.RawField.HANDLE_CODE_IN_APP +\n                  ' must be true when sending sign in link to email');\n            }\n            return actionCodeSettingsBuilder.buildRequest();\n          }).then(function(additionalRequestData) {\n            return self.getRpcHandler().sendSignInLinkToEmail(\n                email, additionalRequestData);\n          }).then(function(email) {\n            // Do not return the email.\n          }));\n};\n\n\n/**\n * Verifies an email action code for password reset and returns a promise\n * that resolves with the associated email if verified.\n * @param {string} code The email action code to verify for password reset.\n * @return {!goog.Promise<string>}\n */\nfireauth.Auth.prototype.verifyPasswordResetCode = function(code) {\n  return this.checkActionCode(code).then(function(info) {\n    return info['data']['email'];\n  });\n};\n\n\n/**\n * Requests resetPassword endpoint for password reset, verifies the action code\n * and updates the new password, returns an empty promise.\n * @param {string} code The email action code to confirm for password reset.\n * @param {string} newPassword The new password.\n * @return {!goog.Promise<undefined, !fireauth.AuthError>}\n */\nfireauth.Auth.prototype.confirmPasswordReset = function(code, newPassword) {\n  return this.registerPendingPromise_(\n      this.getRpcHandler().confirmPasswordReset(code, newPassword)\n      .then(function(email) {\n        // Do not return the email.\n      }));\n};\n\n\n/**\n * Verifies an email action code and returns an empty promise if verified.\n * @param {string} code The email action code to verify for password reset.\n * @return {!goog.Promise<!Object>}\n */\nfireauth.Auth.prototype.checkActionCode = function(code) {\n  return this.registerPendingPromise_(\n      this.getRpcHandler().checkActionCode(code)\n      .then(function(response) {\n        return new fireauth.ActionCodeInfo(response);\n      }));\n};\n\n\n/**\n * Applies an out-of-band email action code, such as an email verification code.\n * @param {string} code The email action code.\n * @return {!goog.Promise<void>}\n */\nfireauth.Auth.prototype.applyActionCode = function(code) {\n  return this.registerPendingPromise_(\n      this.getRpcHandler().applyActionCode(code)\n      .then(function(email) {\n        // Returns nothing.\n      }));\n};\n\n\n/**\n * Sends the password reset email for the email account provided.\n * @param {string} email The email account with the password to be reset.\n * @param {?Object=} opt_actionCodeSettings The optional action code settings\n *     object.\n * @return {!goog.Promise<void>}\n */\nfireauth.Auth.prototype.sendPasswordResetEmail =\n    function(email, opt_actionCodeSettings) {\n  var self = this;\n  return this.registerPendingPromise_(\n      // Wrap in promise as ActionCodeSettings constructor could throw a\n      // synchronous error if invalid arguments are specified.\n      goog.Promise.resolve().then(function() {\n        if (typeof opt_actionCodeSettings !== 'undefined' &&\n            // Ignore empty objects.\n            !goog.object.isEmpty(opt_actionCodeSettings)) {\n          return new fireauth.ActionCodeSettings(\n              /** @type {!Object} */ (opt_actionCodeSettings)).buildRequest();\n        }\n        return {};\n      })\n      .then(function(additionalRequestData) {\n        return self.getRpcHandler().sendPasswordResetEmail(\n            email, additionalRequestData);\n      }).then(function(email) {\n        // Do not return the email.\n      }));\n};\n\n\n/**\n * Signs in with a phone number using the app verifier instance and returns a\n * promise that resolves with the confirmation result which on confirmation\n * will resolve with the UserCredential object.\n * @param {string} phoneNumber The phone number to authenticate with.\n * @param {!firebase.auth.ApplicationVerifier} appVerifier The application\n *     verifier.\n * @return {!goog.Promise<!fireauth.ConfirmationResult>}\n */\nfireauth.Auth.prototype.signInWithPhoneNumber =\n    function(phoneNumber, appVerifier) {\n  return /** @type {!goog.Promise<!fireauth.ConfirmationResult>} */ (\n      this.registerPendingPromise_(fireauth.ConfirmationResult.initialize(\n          this,\n          phoneNumber,\n          appVerifier,\n          // This will wait for redirectStateIsReady to resolve first.\n          goog.bind(this.signInWithCredential, this))));\n};\n\n\n/**\n * Signs in a Firebase User with the provided email and the passwordless\n * sign-in email link.\n * @param {string} email The email account to sign in with.\n * @param {?string=} opt_link The optional link which contains the OTP needed\n *     to complete the sign in with email link. If not specified, the current\n *     URL is used instead.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.Auth.prototype.signInWithEmailLink = function(email, opt_link) {\n  return this.registerPendingPromise_(goog.Promise.resolve().then(() => {\n      const link = opt_link || fireauth.util.getCurrentUrl();\n      const credential = fireauth.EmailAuthProvider.credentialWithLink(\n          email, link);\n      // Check if the tenant ID in the email link matches the tenant ID on Auth\n      // instance.\n      const actionCodeUrl =\n          fireauth.EmailAuthProvider.getActionCodeUrlFromSignInEmailLink(link);\n      if (!actionCodeUrl) {\n        throw new fireauth.AuthError(\n            fireauth.authenum.Error.ARGUMENT_ERROR, 'Invalid email link!');\n      }\n      if (actionCodeUrl['tenantId'] !== this.getTenantId()) {\n        throw new fireauth.AuthError(\n            fireauth.authenum.Error.TENANT_ID_MISMATCH);\n      }\n      return this.signInWithCredential(credential);\n  }));\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Low level handling of XMLHttpRequest.\n */\n\ngoog.provide('goog.net.DefaultXmlHttpFactory');\ngoog.provide('goog.net.XmlHttp');\ngoog.provide('goog.net.XmlHttp.OptionType');\ngoog.provide('goog.net.XmlHttp.ReadyState');\ngoog.provide('goog.net.XmlHttpDefines');\n\ngoog.require('goog.asserts');\ngoog.require('goog.net.WrapperXmlHttpFactory');\ngoog.require('goog.net.XmlHttpFactory');\ngoog.requireType('goog.net.XhrLike');\n\n\n/**\n * Static class for creating XMLHttpRequest objects.\n * @return {!goog.net.XhrLike.OrNative} A new XMLHttpRequest object.\n */\ngoog.net.XmlHttp = function() {\n  return goog.net.XmlHttp.factory_.createInstance();\n};\n\n\n/**\n * @define {boolean} Whether to assume XMLHttpRequest exists. Setting this to\n *     true bypasses the ActiveX probing code.\n * NOTE(ruilopes): Due to the way JSCompiler works, this define *will not* strip\n * out the ActiveX probing code from binaries.  To achieve this, use\n * `goog.net.XmlHttpDefines.ASSUME_NATIVE_XHR` instead.\n * TODO(ruilopes): Collapse both defines.\n */\ngoog.net.XmlHttp.ASSUME_NATIVE_XHR =\n    goog.define('goog.net.XmlHttp.ASSUME_NATIVE_XHR', false);\n\n\n/** @const */\ngoog.net.XmlHttpDefines = {};\n\n\n/**\n * @define {boolean} Whether to assume XMLHttpRequest exists. Setting this to\n *     true eliminates the ActiveX probing code.\n */\ngoog.net.XmlHttpDefines.ASSUME_NATIVE_XHR =\n    goog.define('goog.net.XmlHttpDefines.ASSUME_NATIVE_XHR', false);\n\n\n/**\n * Gets the options to use with the XMLHttpRequest objects obtained using\n * the static methods.\n * @return {Object} The options.\n */\ngoog.net.XmlHttp.getOptions = function() {\n  return goog.net.XmlHttp.factory_.getOptions();\n};\n\n\n/**\n * Type of options that an XmlHttp object can have.\n * @enum {number}\n */\ngoog.net.XmlHttp.OptionType = {\n  /**\n   * Whether a goog.nullFunction should be used to clear the onreadystatechange\n   * handler instead of null.\n   */\n  USE_NULL_FUNCTION: 0,\n\n  /**\n   * NOTE(user): In IE if send() errors on a *local* request the readystate\n   * is still changed to COMPLETE.  We need to ignore it and allow the\n   * try/catch around send() to pick up the error.\n   */\n  LOCAL_REQUEST_ERROR: 1,\n};\n\n\n/**\n * Status constants for XMLHTTP, matches:\n * https://msdn.microsoft.com/en-us/library/ms534361(v=vs.85).aspx\n * @enum {number}\n */\ngoog.net.XmlHttp.ReadyState = {\n  /**\n   * Constant for when xmlhttprequest.readyState is uninitialized\n   */\n  UNINITIALIZED: 0,\n\n  /**\n   * Constant for when xmlhttprequest.readyState is loading.\n   */\n  LOADING: 1,\n\n  /**\n   * Constant for when xmlhttprequest.readyState is loaded.\n   */\n  LOADED: 2,\n\n  /**\n   * Constant for when xmlhttprequest.readyState is in an interactive state.\n   */\n  INTERACTIVE: 3,\n\n  /**\n   * Constant for when xmlhttprequest.readyState is completed\n   */\n  COMPLETE: 4,\n};\n\n\n/**\n * The global factory instance for creating XMLHttpRequest objects.\n * @type {goog.net.XmlHttpFactory}\n * @private\n */\ngoog.net.XmlHttp.factory_;\n\n\n/**\n * Sets the factories for creating XMLHttpRequest objects and their options.\n * @param {Function} factory The factory for XMLHttpRequest objects.\n * @param {Function} optionsFactory The factory for options.\n * @deprecated Use setGlobalFactory instead.\n */\ngoog.net.XmlHttp.setFactory = function(factory, optionsFactory) {\n  goog.net.XmlHttp.setGlobalFactory(\n      new goog.net.WrapperXmlHttpFactory(\n          goog.asserts.assert(factory), goog.asserts.assert(optionsFactory)));\n};\n\n\n/**\n * Sets the global factory object.\n * @param {!goog.net.XmlHttpFactory} factory New global factory object.\n */\ngoog.net.XmlHttp.setGlobalFactory = function(factory) {\n  goog.net.XmlHttp.factory_ = factory;\n};\n\n\n\n/**\n * Default factory to use when creating xhr objects.  You probably shouldn't be\n * instantiating this directly, but rather using it via goog.net.XmlHttp.\n * @extends {goog.net.XmlHttpFactory}\n * @constructor\n */\ngoog.net.DefaultXmlHttpFactory = function() {\n  goog.net.XmlHttpFactory.call(this);\n};\ngoog.inherits(goog.net.DefaultXmlHttpFactory, goog.net.XmlHttpFactory);\n\n\n/** @override */\ngoog.net.DefaultXmlHttpFactory.prototype.createInstance = function() {\n  var progId = this.getProgId_();\n  if (progId) {\n    return new ActiveXObject(progId);\n  } else {\n    return new XMLHttpRequest();\n  }\n};\n\n\n/** @override */\ngoog.net.DefaultXmlHttpFactory.prototype.internalGetOptions = function() {\n  var progId = this.getProgId_();\n  var options = {};\n  if (progId) {\n    options[goog.net.XmlHttp.OptionType.USE_NULL_FUNCTION] = true;\n    options[goog.net.XmlHttp.OptionType.LOCAL_REQUEST_ERROR] = true;\n  }\n  return options;\n};\n\n\n/**\n * The ActiveX PROG ID string to use to create xhr's in IE. Lazily initialized.\n * @type {string|undefined}\n * @private\n */\ngoog.net.DefaultXmlHttpFactory.prototype.ieProgId_;\n\n\n/**\n * Initialize the private state used by other functions.\n * @return {string} The ActiveX PROG ID string to use to create xhr's in IE.\n * @private\n */\ngoog.net.DefaultXmlHttpFactory.prototype.getProgId_ = function() {\n  if (goog.net.XmlHttp.ASSUME_NATIVE_XHR ||\n      goog.net.XmlHttpDefines.ASSUME_NATIVE_XHR) {\n    return '';\n  }\n\n  // The following blog post describes what PROG IDs to use to create the\n  // XMLHTTP object in Internet Explorer:\n  // http://blogs.msdn.com/xmlteam/archive/2006/10/23/using-the-right-version-of-msxml-in-internet-explorer.aspx\n  // However we do not (yet) fully trust that this will be OK for old versions\n  // of IE on Win9x so we therefore keep the last 2.\n  if (!this.ieProgId_ && typeof XMLHttpRequest == 'undefined' &&\n      typeof ActiveXObject != 'undefined') {\n    // Candidate Active X types.\n    var ACTIVE_X_IDENTS = [\n      'MSXML2.XMLHTTP.6.0',\n      'MSXML2.XMLHTTP.3.0',\n      'MSXML2.XMLHTTP',\n      'Microsoft.XMLHTTP',\n    ];\n    for (var i = 0; i < ACTIVE_X_IDENTS.length; i++) {\n      var candidate = ACTIVE_X_IDENTS[i];\n\n      try {\n        new ActiveXObject(candidate);\n        // NOTE(user): cannot assign progid and return candidate in one line\n        // because JSCompiler complaings: BUG 658126\n        this.ieProgId_ = candidate;\n        return candidate;\n      } catch (e) {\n        // do nothing; try next choice\n      }\n    }\n\n    // couldn't find any matches\n    throw new Error(\n        'Could not create ActiveXObject. ActiveX might be disabled,' +\n        ' or MSXML might not be installed');\n  }\n\n  return /** @type {string} */ (this.ieProgId_);\n};\n\n\n// Set the global factory to an instance of the default factory.\ngoog.net.XmlHttp.setGlobalFactory(new goog.net.DefaultXmlHttpFactory());\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the invalid origin error, a subclass of\n * fireauth.AuthError.\n */\n\n\ngoog.provide('fireauth.InvalidOriginError');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.authenum.Error');\ngoog.require('goog.Uri');\ngoog.require('goog.string');\n\n\n\n/**\n * Invalid origin error that can be returned to the developer.\n * @param {string} origin The invalid domain name.\n * @constructor\n * @extends {fireauth.AuthError}\n */\nfireauth.InvalidOriginError = function(origin) {\n  var code = fireauth.authenum.Error.INVALID_ORIGIN;\n  var message = undefined;\n  var uri = goog.Uri.parse(origin);\n  // Get domain.\n  var domain = uri.getDomain();\n  // Get scheme.\n  var scheme = uri.getScheme();\n  // Only http, https and chrome-extension currently supported.\n  if (scheme == 'chrome-extension') {\n    // Chrome extension whitelisting.\n    // Replace chrome-extension://CHROME_EXT_ID in error message template.\n    message = goog.string.subs(\n        fireauth.InvalidOriginError.CHROME_EXTENSION_MESSAGE_TEMPLATE_,\n        domain);\n  } else if (scheme == 'http' || scheme == 'https') {\n    // Replace domain in error message template.\n    message = goog.string.subs(\n        fireauth.InvalidOriginError.HTTP_MESSAGE_TEMPLATE_,\n        domain);\n  } else {\n    // Throw operation not supported when non http, https or Chrome extension\n    // protocol.\n    code = fireauth.authenum.Error.OPERATION_NOT_SUPPORTED;\n  }\n  fireauth.InvalidOriginError.base(this, 'constructor', code, message);\n};\ngoog.inherits(fireauth.InvalidOriginError, fireauth.AuthError);\n\n\n/** @private @const {string} The http invalid origin message template. */\nfireauth.InvalidOriginError.HTTP_MESSAGE_TEMPLATE_ = 'This domain (%s) is no' +\n    't authorized to run this operation. Add it to the OAuth redirect domain' +\n    's list in the Firebase console -> Auth section -> Sign in method tab.';\n\n\n/**\n * @private @const {string} The Chrome extension invalid origin message\n *     template.\n */\nfireauth.InvalidOriginError.CHROME_EXTENSION_MESSAGE_TEMPLATE_ = 'This chrom' +\n    'e extension ID (chrome-extension://%s) is not authorized to run this op' +\n    'eration. Add it to the OAuth redirect domains list in the Firebase cons' +\n    'ole -> Auth section -> Sign in method tab.';\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the Auth errors that include emails and an Auth\n * credential, a subclass of fireauth.AuthError.\n */\n\n\ngoog.provide('fireauth.AuthErrorWithCredential');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.AuthProvider');\ngoog.require('fireauth.object');\ngoog.require('goog.object');\n\n\n/**\n * Error with email and credential that can be returned to the developer.\n * @param {fireauth.authenum.Error} code The error code.\n * @param {?fireauth.AuthErrorWithCredential.CredentialInfo=} opt_credentialInfo\n *     Additional credential information to associate with the error.\n * @param {string=} opt_message The human-readable message.\n * @constructor\n * @extends {fireauth.AuthError}\n */\nfireauth.AuthErrorWithCredential =\n    function(code, opt_credentialInfo, opt_message) {\n  fireauth.AuthErrorWithCredential.base(\n      this, 'constructor', code, opt_message);\n  var credentialInfo = opt_credentialInfo || {};\n\n  // These properties are public.\n  if (credentialInfo.email) {\n    fireauth.object.setReadonlyProperty(this, 'email', credentialInfo.email);\n  }\n  if (credentialInfo.phoneNumber) {\n    fireauth.object.setReadonlyProperty(this, 'phoneNumber',\n        credentialInfo.phoneNumber);\n  }\n  if (credentialInfo.credential) {\n    fireauth.object.setReadonlyProperty(this, 'credential',\n        credentialInfo.credential);\n  }\n  if (credentialInfo.tenantId) {\n    fireauth.object.setReadonlyProperty(this, 'tenantId',\n        credentialInfo.tenantId);\n  }\n};\ngoog.inherits(fireauth.AuthErrorWithCredential, fireauth.AuthError);\n\n\n/**\n * Additional credential information to associate with an error, so that the\n * user does not have to execute the Auth flow again on linking errors.\n * @typedef {{\n *   email: (?string|undefined),\n *   phoneNumber: (?string|undefined),\n *   credential: (?fireauth.AuthCredential|undefined),\n *   tenantId: (?string|undefined),\n * }}\n */\nfireauth.AuthErrorWithCredential.CredentialInfo;\n\n\n/**\n * @return {!Object} The plain object form of the error.\n * @override\n */\nfireauth.AuthErrorWithCredential.prototype.toPlainObject = function() {\n  var obj = {\n    'code': this['code'],\n    'message': this.message\n  };\n  if (this['email']) {\n    obj['email'] = this['email'];\n  }\n  if (this['phoneNumber']) {\n    obj['phoneNumber'] = this['phoneNumber'];\n  }\n  if (this['tenantId']) {\n    obj['tenantId'] = this['tenantId'];\n  }\n\n  var credential = this['credential'] && this['credential'].toPlainObject();\n  if (credential){\n    goog.object.extend(obj, credential);\n  }\n  return obj;\n};\n\n\n/**\n * @return {!Object} The plain object form of the error. This is used by\n *     JSON.toStringify() to return the stringified representation of the error;\n * @override\n */\nfireauth.AuthErrorWithCredential.prototype.toJSON = function() {\n  // Return the plain object representation in case JSON.stringify is called on\n  // an Auth error instance.\n  return this.toPlainObject();\n};\n\n\n/**\n * @param {?Object|undefined} response The object response to convert to a\n *     fireauth.AuthErrorWithCredential.\n * @return {?fireauth.AuthError} The error representation of the response.\n */\nfireauth.AuthErrorWithCredential.fromPlainObject = function(response) {\n  // Code included.\n  if (response['code']) {\n    var code = response['code'] || '';\n    // Remove prefix from name if available.\n    if (code.indexOf(fireauth.AuthError.ERROR_CODE_PREFIX) == 0) {\n      code = code.substring(fireauth.AuthError.ERROR_CODE_PREFIX.length);\n    }\n\n    // Credentials and tenant ID in response.\n    var credentialInfo = {\n      credential: fireauth.AuthProvider.getCredentialFromResponse(response),\n      tenantId: response['tenantId']\n    };\n    if (response['email']) {\n      credentialInfo.email = response['email'];\n    } else if (response['phoneNumber']) {\n      credentialInfo.phoneNumber = response['phoneNumber'];\n    } else if (!credentialInfo.credential) {\n      // Neither email, phone number or credentials are set; return a generic\n      // error.\n      return new fireauth.AuthError(code, response['message'] || undefined);\n    }\n\n    return new fireauth.AuthErrorWithCredential(code, credentialInfo,\n        response['message']);\n  }\n  // No error or invalid response.\n  return null;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Interface for a factory for creating XMLHttpRequest objects\n * and metadata about them.\n */\n\ngoog.provide('goog.net.XmlHttpFactory');\n\n/** @suppress {extraRequire} Typedef. */\ngoog.require('goog.net.XhrLike');\n\n\n\n/**\n * Abstract base class for an XmlHttpRequest factory.\n * @constructor\n */\ngoog.net.XmlHttpFactory = function() {};\n\n\n/**\n * Cache of options - we only actually call internalGetOptions once.\n * @type {?Object}\n * @private\n */\ngoog.net.XmlHttpFactory.prototype.cachedOptions_ = null;\n\n\n/**\n * @return {!goog.net.XhrLike.OrNative} A new XhrLike instance.\n */\ngoog.net.XmlHttpFactory.prototype.createInstance = goog.abstractMethod;\n\n\n/**\n * @return {Object} Options describing how xhr objects obtained from this\n *     factory should be used.\n */\ngoog.net.XmlHttpFactory.prototype.getOptions = function() {\n  return this.cachedOptions_ ||\n      (this.cachedOptions_ = this.internalGetOptions());\n};\n\n\n/**\n * Override this method in subclasses to preserve the caching offered by\n * getOptions().\n * @return {Object} Options describing how xhr objects obtained from this\n *     factory should be used.\n * @protected\n */\ngoog.net.XmlHttpFactory.prototype.internalGetOptions = goog.abstractMethod;\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview This file contain classes that add support for cross-domain XHR\n * requests (see http://www.w3.org/TR/cors/). Most modern browsers are able to\n * use a regular XMLHttpRequest for that, but IE 8 use XDomainRequest object\n * instead. This file provides an adapter from this object to a goog.net.XhrLike\n * and a factory to allow using this with a goog.net.XhrIo instance.\n *\n * IE 7 and older versions are not supported (given that they do not support\n * CORS requests).\n */\ngoog.provide('goog.net.CorsXmlHttpFactory');\ngoog.provide('goog.net.IeCorsXhrAdapter');\n\ngoog.require('goog.net.HttpStatus');\ngoog.require('goog.net.XhrLike');\ngoog.require('goog.net.XmlHttp');\ngoog.require('goog.net.XmlHttpFactory');\n\n\n\n/**\n * A factory of XML http request objects that supports cross domain requests.\n * This class should be instantiated and passed as the parameter of a\n * goog.net.XhrIo constructor to allow cross-domain requests in every browser.\n *\n * @extends {goog.net.XmlHttpFactory}\n * @constructor\n * @final\n */\ngoog.net.CorsXmlHttpFactory = function() {\n  goog.net.XmlHttpFactory.call(this);\n};\ngoog.inherits(goog.net.CorsXmlHttpFactory, goog.net.XmlHttpFactory);\n\n\n/** @override */\ngoog.net.CorsXmlHttpFactory.prototype.createInstance = function() {\n  var xhr = new XMLHttpRequest();\n  if (('withCredentials' in xhr)) {\n    return xhr;\n  } else if (typeof XDomainRequest != 'undefined') {\n    return new goog.net.IeCorsXhrAdapter();\n  } else {\n    throw new Error('Unsupported browser');\n  }\n};\n\n\n/** @override */\ngoog.net.CorsXmlHttpFactory.prototype.internalGetOptions = function() {\n  return {};\n};\n\n\n\n/**\n * An adapter around Internet Explorer's XDomainRequest object that makes it\n * look like a standard XMLHttpRequest. This can be used instead of\n * XMLHttpRequest to support CORS.\n *\n * @implements {goog.net.XhrLike}\n * @constructor\n * @struct\n * @final\n */\ngoog.net.IeCorsXhrAdapter = function() {\n  /**\n   * The underlying XDomainRequest used to make the HTTP request.\n   * @type {!XDomainRequest}\n   * @private\n   */\n  this.xdr_ = new XDomainRequest();\n\n  /**\n   * The simulated ready state.\n   * @type {number}\n   */\n  this.readyState = goog.net.XmlHttp.ReadyState.UNINITIALIZED;\n\n  /**\n   * The simulated ready state change callback function.\n   * @type {?function()|undefined}\n   */\n  this.onreadystatechange = null;\n\n  /** @override */\n  this.response = '';\n\n  /**\n   * The simulated response text parameter.\n   * @type {string}\n   */\n  this.responseText = '';\n\n  /**\n   * This implementation only supports text response.\n   * @type {string}\n   * @override\n   */\n  this.responseType = '';\n\n  /**\n   * The simulated status code\n   * @type {number}\n   */\n  this.status = -1;\n\n  /** @override */\n  this.responseXML = null;\n\n  /** @override */\n  this.statusText = '';\n\n  this.xdr_.onload = goog.bind(this.handleLoad_, this);\n  this.xdr_.onerror = goog.bind(this.handleError_, this);\n  this.xdr_.onprogress = goog.bind(this.handleProgress_, this);\n  this.xdr_.ontimeout = goog.bind(this.handleTimeout_, this);\n};\n\n\n/**\n * Opens a connection to the provided URL.\n * @param {string} method The HTTP method to use. Valid methods include GET and\n *     POST.\n * @param {string} url The URL to contact. The authority of this URL must match\n *     the authority of the current page's URL (e.g. http or https).\n * @param {?boolean=} opt_async Whether the request is asynchronous, defaulting\n *     to true. XDomainRequest does not support syncronous requests, so setting\n *     it to false will actually raise an exception.\n * @override\n */\ngoog.net.IeCorsXhrAdapter.prototype.open = function(method, url, opt_async) {\n  if (opt_async != null && (!opt_async)) {\n    throw new Error('Only async requests are supported.');\n  }\n  this.xdr_.open(method, url);\n};\n\n\n/**\n * Sends the request to the remote server. Before calling this function, always\n * call {@link open}.\n * @param {(ArrayBuffer|ArrayBufferView|Blob|Document|FormData|null|string)=}\n *     opt_content The content to send as POSTDATA, if any. Only string data is\n *     supported by this implementation.\n * @override\n */\ngoog.net.IeCorsXhrAdapter.prototype.send = function(opt_content) {\n  if (opt_content) {\n    if (typeof opt_content == 'string') {\n      this.xdr_.send(opt_content);\n    } else {\n      throw new Error('Only string data is supported');\n    }\n  } else {\n    this.xdr_.send();\n  }\n};\n\n\n/**\n * @override\n */\ngoog.net.IeCorsXhrAdapter.prototype.abort = function() {\n  this.xdr_.abort();\n};\n\n\n/**\n * Sets a request header to send to the remote server. Because this\n * implementation does not support request headers, this function does nothing.\n * @param {string} key The name of the HTTP header to set. Ignored.\n * @param {string} value The value to set for the HTTP header. Ignored.\n * @override\n */\ngoog.net.IeCorsXhrAdapter.prototype.setRequestHeader = function(key, value) {\n  // Unsupported; ignore the header.\n};\n\n\n/**\n * Returns the value of the response header identified by key. This\n * implementation only supports the 'content-type' header.\n * @param {string} key The request header to fetch. If this parameter is set to\n *     'content-type' (case-insensitive), this function returns the value of\n *     the 'content-type' request header. If this parameter is set to any other\n *     value, this function always returns an empty string.\n * @return {string} The value of the response header, or an empty string if key\n *     is not 'content-type' (case-insensitive).\n * @override\n */\ngoog.net.IeCorsXhrAdapter.prototype.getResponseHeader = function(key) {\n  if (key.toLowerCase() == 'content-type') {\n    return this.xdr_.contentType;\n  }\n  return '';\n};\n\n\n/**\n * Handles a request that has fully loaded successfully.\n * @private\n */\ngoog.net.IeCorsXhrAdapter.prototype.handleLoad_ = function() {\n  // IE only calls onload if the status is 200, so the status code must be OK.\n  this.status = goog.net.HttpStatus.OK;\n  this.response = this.responseText = this.xdr_.responseText;\n  this.setReadyState_(goog.net.XmlHttp.ReadyState.COMPLETE);\n};\n\n\n/**\n * Handles a request that has failed to load.\n * @private\n */\ngoog.net.IeCorsXhrAdapter.prototype.handleError_ = function() {\n  // IE doesn't tell us what the status code actually is (other than the fact\n  // that it is not 200), so simulate an INTERNAL_SERVER_ERROR.\n  this.status = goog.net.HttpStatus.INTERNAL_SERVER_ERROR;\n  this.response = this.responseText = '';\n  this.setReadyState_(goog.net.XmlHttp.ReadyState.COMPLETE);\n};\n\n\n/**\n * Handles a request that timed out.\n * @private\n */\ngoog.net.IeCorsXhrAdapter.prototype.handleTimeout_ = function() {\n  this.handleError_();\n};\n\n\n/**\n * Handles a request that is in the process of loading.\n * @private\n */\ngoog.net.IeCorsXhrAdapter.prototype.handleProgress_ = function() {\n  // IE only calls onprogress if the status is 200, so the status code must be\n  // OK.\n  this.status = goog.net.HttpStatus.OK;\n  this.setReadyState_(goog.net.XmlHttp.ReadyState.LOADING);\n};\n\n\n/**\n * Sets this XHR's ready state and fires the onreadystatechange listener (if one\n * is set).\n * @param {number} readyState The new ready state.\n * @private\n */\ngoog.net.IeCorsXhrAdapter.prototype.setReadyState_ = function(readyState) {\n  this.readyState = readyState;\n  if (this.onreadystatechange) {\n    this.onreadystatechange();\n  }\n};\n\n\n/**\n * Returns the response headers from the server. This implemntation only returns\n * the 'content-type' header.\n * @return {string} The headers returned from the server.\n * @override\n */\ngoog.net.IeCorsXhrAdapter.prototype.getAllResponseHeaders = function() {\n  return 'content-type: ' + this.xdr_.contentType;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Definition of the LogRecord class. Please minimize\n * dependencies this file has on other closure classes as any dependency it\n * takes won't be able to use the logging infrastructure.\n */\n\ngoog.provide('goog.debug.LogRecord');\n\n\n\n/**\n * LogRecord objects are used to pass logging requests between\n * the logging framework and individual log Handlers.\n * @constructor\n * @param {goog.debug.Logger.Level} level One of the level identifiers.\n * @param {string} msg The string message.\n * @param {string} loggerName The name of the source logger.\n * @param {number=} opt_time Time this log record was created if other than now.\n *     If 0, we use #goog.now.\n * @param {number=} opt_sequenceNumber Sequence number of this log record. This\n *     should only be passed in when restoring a log record from persistence.\n */\ngoog.debug.LogRecord = function(\n    level, msg, loggerName, opt_time, opt_sequenceNumber) {\n  this.reset(level, msg, loggerName, opt_time, opt_sequenceNumber);\n};\n\n\n/**\n * Time the LogRecord was created.\n * @type {number}\n * @private\n */\ngoog.debug.LogRecord.prototype.time_;\n\n\n/**\n * Level of the LogRecord\n * @type {goog.debug.Logger.Level}\n * @private\n */\ngoog.debug.LogRecord.prototype.level_;\n\n\n/**\n * Message associated with the record\n * @type {string}\n * @private\n */\ngoog.debug.LogRecord.prototype.msg_;\n\n\n/**\n * Name of the logger that created the record.\n * @type {string}\n * @private\n */\ngoog.debug.LogRecord.prototype.loggerName_;\n\n\n/**\n * Sequence number for the LogRecord. Each record has a unique sequence number\n * that is greater than all log records created before it.\n * @type {number}\n * @private\n */\ngoog.debug.LogRecord.prototype.sequenceNumber_ = 0;\n\n\n/**\n * Exception associated with the record\n * @type {?Object}\n * @private\n */\ngoog.debug.LogRecord.prototype.exception_ = null;\n\n\n/**\n * @define {boolean} Whether to enable log sequence numbers.\n */\ngoog.debug.LogRecord.ENABLE_SEQUENCE_NUMBERS =\n    goog.define('goog.debug.LogRecord.ENABLE_SEQUENCE_NUMBERS', true);\n\n\n/**\n * A sequence counter for assigning increasing sequence numbers to LogRecord\n * objects.\n * @type {number}\n * @private\n */\ngoog.debug.LogRecord.nextSequenceNumber_ = 0;\n\n\n/**\n * Sets all fields of the log record.\n * @param {goog.debug.Logger.Level} level One of the level identifiers.\n * @param {string} msg The string message.\n * @param {string} loggerName The name of the source logger.\n * @param {number=} opt_time Time this log record was created if other than now.\n *     If 0, we use #goog.now.\n * @param {number=} opt_sequenceNumber Sequence number of this log record. This\n *     should only be passed in when restoring a log record from persistence.\n */\ngoog.debug.LogRecord.prototype.reset = function(\n    level, msg, loggerName, opt_time, opt_sequenceNumber) {\n  if (goog.debug.LogRecord.ENABLE_SEQUENCE_NUMBERS) {\n    this.sequenceNumber_ = typeof opt_sequenceNumber == 'number' ?\n        opt_sequenceNumber :\n        goog.debug.LogRecord.nextSequenceNumber_++;\n  }\n\n  this.time_ = opt_time || goog.now();\n  this.level_ = level;\n  this.msg_ = msg;\n  this.loggerName_ = loggerName;\n  delete this.exception_;\n};\n\n\n/**\n * Get the source Logger's name.\n *\n * @return {string} source logger name (may be null).\n */\ngoog.debug.LogRecord.prototype.getLoggerName = function() {\n  return this.loggerName_;\n};\n\n\n/**\n * Get the exception that is part of the log record.\n *\n * @return {Object} the exception.\n */\ngoog.debug.LogRecord.prototype.getException = function() {\n  return this.exception_;\n};\n\n\n/**\n * Set the exception that is part of the log record.\n *\n * @param {Object} exception the exception.\n */\ngoog.debug.LogRecord.prototype.setException = function(exception) {\n  this.exception_ = exception;\n};\n\n\n/**\n * Get the source Logger's name.\n *\n * @param {string} loggerName source logger name (may be null).\n */\ngoog.debug.LogRecord.prototype.setLoggerName = function(loggerName) {\n  this.loggerName_ = loggerName;\n};\n\n\n/**\n * Get the logging message level, for example Level.SEVERE.\n * @return {goog.debug.Logger.Level} the logging message level.\n */\ngoog.debug.LogRecord.prototype.getLevel = function() {\n  return this.level_;\n};\n\n\n/**\n * Set the logging message level, for example Level.SEVERE.\n * @param {goog.debug.Logger.Level} level the logging message level.\n */\ngoog.debug.LogRecord.prototype.setLevel = function(level) {\n  this.level_ = level;\n};\n\n\n/**\n * Get the \"raw\" log message, before localization or formatting.\n *\n * @return {string} the raw message string.\n */\ngoog.debug.LogRecord.prototype.getMessage = function() {\n  return this.msg_;\n};\n\n\n/**\n * Set the \"raw\" log message, before localization or formatting.\n *\n * @param {string} msg the raw message string.\n */\ngoog.debug.LogRecord.prototype.setMessage = function(msg) {\n  this.msg_ = msg;\n};\n\n\n/**\n * Get event time in milliseconds since 1970.\n *\n * @return {number} event time in millis since 1970.\n */\ngoog.debug.LogRecord.prototype.getMillis = function() {\n  return this.time_;\n};\n\n\n/**\n * Set event time in milliseconds since 1970.\n *\n * @param {number} time event time in millis since 1970.\n */\ngoog.debug.LogRecord.prototype.setMillis = function(time) {\n  this.time_ = time;\n};\n\n\n/**\n * Get the sequence number.\n * <p>\n * Sequence numbers are normally assigned in the LogRecord\n * constructor, which assigns unique sequence numbers to\n * each new LogRecord in increasing order.\n * @return {number} the sequence number.\n */\ngoog.debug.LogRecord.prototype.getSequenceNumber = function() {\n  return this.sequenceNumber_;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Constants for HTTP status codes.\n */\n\ngoog.provide('goog.net.HttpStatus');\n\n\n/**\n * HTTP Status Codes defined in RFC 2616, RFC 6585, RFC 4918 and RFC 7538.\n * @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html\n * @see http://tools.ietf.org/html/rfc6585\n * @see https://tools.ietf.org/html/rfc4918\n * @see https://tools.ietf.org/html/rfc7538\n * @enum {number}\n */\ngoog.net.HttpStatus = {\n  // Informational 1xx\n  CONTINUE: 100,\n  SWITCHING_PROTOCOLS: 101,\n\n  // Successful 2xx\n  OK: 200,\n  CREATED: 201,\n  ACCEPTED: 202,\n  NON_AUTHORITATIVE_INFORMATION: 203,\n  NO_CONTENT: 204,\n  RESET_CONTENT: 205,\n  PARTIAL_CONTENT: 206,\n  MULTI_STATUS: 207,\n\n  // Redirection 3xx\n  MULTIPLE_CHOICES: 300,\n  MOVED_PERMANENTLY: 301,\n  FOUND: 302,\n  SEE_OTHER: 303,\n  NOT_MODIFIED: 304,\n  USE_PROXY: 305,\n  TEMPORARY_REDIRECT: 307,\n  PERMANENT_REDIRECT: 308,\n\n  // Client Error 4xx\n  BAD_REQUEST: 400,\n  UNAUTHORIZED: 401,\n  PAYMENT_REQUIRED: 402,\n  FORBIDDEN: 403,\n  NOT_FOUND: 404,\n  METHOD_NOT_ALLOWED: 405,\n  NOT_ACCEPTABLE: 406,\n  PROXY_AUTHENTICATION_REQUIRED: 407,\n  REQUEST_TIMEOUT: 408,\n  CONFLICT: 409,\n  GONE: 410,\n  LENGTH_REQUIRED: 411,\n  PRECONDITION_FAILED: 412,\n  REQUEST_ENTITY_TOO_LARGE: 413,\n  REQUEST_URI_TOO_LONG: 414,\n  UNSUPPORTED_MEDIA_TYPE: 415,\n  REQUEST_RANGE_NOT_SATISFIABLE: 416,\n  EXPECTATION_FAILED: 417,\n  UNPROCESSABLE_ENTITY: 422,\n  LOCKED: 423,\n  FAILED_DEPENDENCY: 424,\n  PRECONDITION_REQUIRED: 428,\n  TOO_MANY_REQUESTS: 429,\n  REQUEST_HEADER_FIELDS_TOO_LARGE: 431,\n\n  // Server Error 5xx\n  INTERNAL_SERVER_ERROR: 500,\n  NOT_IMPLEMENTED: 501,\n  BAD_GATEWAY: 502,\n  SERVICE_UNAVAILABLE: 503,\n  GATEWAY_TIMEOUT: 504,\n  HTTP_VERSION_NOT_SUPPORTED: 505,\n  INSUFFICIENT_STORAGE: 507,\n  NETWORK_AUTHENTICATION_REQUIRED: 511,\n\n  /*\n   * IE returns this code for 204 due to its use of URLMon, which returns this\n   * code for 'Operation Aborted'. The status text is 'Unknown', the response\n   * headers are ''. Known to occur on IE 6 on XP through IE9 on Win7.\n   */\n  QUIRK_IE_NO_CONTENT: 1223,\n};\n\n\n/**\n * Returns whether the given status should be considered successful.\n *\n * Successful codes are OK (200), CREATED (201), ACCEPTED (202),\n * NO CONTENT (204), PARTIAL CONTENT (206), NOT MODIFIED (304),\n * and IE's no content code (1223).\n *\n * @param {number} status The status code to test.\n * @return {boolean} Whether the status code should be considered successful.\n */\ngoog.net.HttpStatus.isSuccess = function(status) {\n  switch (status) {\n    case goog.net.HttpStatus.OK:\n    case goog.net.HttpStatus.CREATED:\n    case goog.net.HttpStatus.ACCEPTED:\n    case goog.net.HttpStatus.NO_CONTENT:\n    case goog.net.HttpStatus.PARTIAL_CONTENT:\n    case goog.net.HttpStatus.NOT_MODIFIED:\n    case goog.net.HttpStatus.QUIRK_IE_NO_CONTENT:\n      return true;\n\n    default:\n      return false;\n  }\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Definition of the Logger class. Please minimize dependencies\n * this file has on other closure classes as any dependency it takes won't be\n * able to use the logging infrastructure.\n *\n * @see ../demos/debug.html\n */\n\ngoog.provide('goog.debug.LogManager');\ngoog.provide('goog.debug.Loggable');\ngoog.provide('goog.debug.Logger');\ngoog.provide('goog.debug.Logger.Level');\n\ngoog.require('goog.array');\ngoog.require('goog.asserts');\ngoog.require('goog.debug');\ngoog.require('goog.debug.LogBuffer');\ngoog.require('goog.debug.LogRecord');\n\n\n/**\n * A message value that can be handled by a Logger.\n *\n * Functions are treated like callbacks, but are only called when the event's\n * log level is enabled. This is useful for logging messages that are expensive\n * to construct.\n *\n * @typedef {string|function(): string}\n */\ngoog.debug.Loggable;\n\n\n\n/**\n * The Logger is an object used for logging debug messages. Loggers are\n * normally named, using a hierarchical dot-separated namespace. Logger names\n * can be arbitrary strings, but they should normally be based on the package\n * name or class name of the logged component, such as goog.net.BrowserChannel.\n *\n * The Logger object is loosely based on the java class\n * java.util.logging.Logger. It supports different levels of filtering for\n * different loggers.\n *\n * The logger object should never be instantiated by application code. It\n * should always use the goog.debug.Logger.getLogger function.\n *\n * @constructor\n * @param {string} name The name of the Logger.\n * @final\n */\ngoog.debug.Logger = function(name) {\n  /**\n   * Name of the Logger. Generally a dot-separated namespace\n   * @private {string}\n   */\n  this.name_ = name;\n\n  /**\n   * Parent Logger.\n   * @private {?goog.debug.Logger}\n   */\n  this.parent_ = null;\n\n  /**\n   * Level that this logger only filters above. Null indicates it should\n   * inherit from the parent.\n   * @private {?goog.debug.Logger.Level}\n   */\n  this.level_ = null;\n\n  /**\n   * Map of children loggers. The keys are the leaf names of the children and\n   * the values are the child loggers.\n   * @private {?Object}\n   */\n  this.children_ = null;\n\n  /**\n   * Handlers that are listening to this logger.\n   * @private {?Array<?Function>}\n   */\n  this.handlers_ = null;\n};\n\n\n/** @const */\ngoog.debug.Logger.ROOT_LOGGER_NAME = '';\n\n\n/**\n * @define {boolean} Toggles whether loggers other than the root logger can have\n *     log handlers attached to them and whether they can have their log level\n *     set. Logging is a bit faster when this is set to false.\n */\ngoog.debug.Logger.ENABLE_HIERARCHY =\n    goog.define('goog.debug.Logger.ENABLE_HIERARCHY', true);\n\n\n/**\n * @define {boolean} Toggles whether active log statements are also recorded\n *     to the profiler.\n */\ngoog.debug.Logger.ENABLE_PROFILER_LOGGING =\n    goog.define('goog.debug.Logger.ENABLE_PROFILER_LOGGING', false);\n\n\nif (!goog.debug.Logger.ENABLE_HIERARCHY) {\n  /**\n   * @type {!Array<Function>}\n   * @private\n   */\n  goog.debug.Logger.rootHandlers_ = [];\n\n\n  /**\n   * @type {goog.debug.Logger.Level}\n   * @private\n   */\n  goog.debug.Logger.rootLevel_;\n}\n\n\n\n/**\n * The Level class defines a set of standard logging levels that\n * can be used to control logging output.  The logging Level objects\n * are ordered and are specified by ordered integers.  Enabling logging\n * at a given level also enables logging at all higher levels.\n * <p>\n * Clients should normally use the predefined Level constants such\n * as Level.SEVERE.\n * <p>\n * The levels in descending order are:\n * <ul>\n * <li>SEVERE (highest value)\n * <li>WARNING\n * <li>INFO\n * <li>CONFIG\n * <li>FINE\n * <li>FINER\n * <li>FINEST  (lowest value)\n * </ul>\n * In addition there is a level OFF that can be used to turn\n * off logging, and a level ALL that can be used to enable\n * logging of all messages.\n *\n * @param {string} name The name of the level.\n * @param {number} value The numeric value of the level.\n * @constructor\n * @final\n */\ngoog.debug.Logger.Level = function(name, value) {\n  /**\n   * The name of the level\n   * @type {string}\n   */\n  this.name = name;\n\n  /**\n   * The numeric value of the level\n   * @type {number}\n   */\n  this.value = value;\n};\n\n\n/**\n * @return {string} String representation of the logger level.\n * @override\n */\ngoog.debug.Logger.Level.prototype.toString = function() {\n  return this.name;\n};\n\n\n/**\n * OFF is a special level that can be used to turn off logging.\n * This level is initialized to <CODE>Infinity</CODE>.\n * @type {!goog.debug.Logger.Level}\n */\ngoog.debug.Logger.Level.OFF = new goog.debug.Logger.Level('OFF', Infinity);\n\n\n/**\n * SHOUT is a message level for extra debugging loudness.\n * This level is initialized to <CODE>1200</CODE>.\n * @type {!goog.debug.Logger.Level}\n */\ngoog.debug.Logger.Level.SHOUT = new goog.debug.Logger.Level('SHOUT', 1200);\n\n\n/**\n * SEVERE is a message level indicating a serious failure.\n * This level is initialized to <CODE>1000</CODE>.\n * @type {!goog.debug.Logger.Level}\n */\ngoog.debug.Logger.Level.SEVERE = new goog.debug.Logger.Level('SEVERE', 1000);\n\n\n/**\n * WARNING is a message level indicating a potential problem.\n * This level is initialized to <CODE>900</CODE>.\n * @type {!goog.debug.Logger.Level}\n */\ngoog.debug.Logger.Level.WARNING = new goog.debug.Logger.Level('WARNING', 900);\n\n\n/**\n * INFO is a message level for informational messages.\n * This level is initialized to <CODE>800</CODE>.\n * @type {!goog.debug.Logger.Level}\n */\ngoog.debug.Logger.Level.INFO = new goog.debug.Logger.Level('INFO', 800);\n\n\n/**\n * CONFIG is a message level for static configuration messages.\n * This level is initialized to <CODE>700</CODE>.\n * @type {!goog.debug.Logger.Level}\n */\ngoog.debug.Logger.Level.CONFIG = new goog.debug.Logger.Level('CONFIG', 700);\n\n\n/**\n * FINE is a message level providing tracing information.\n * This level is initialized to <CODE>500</CODE>.\n * @type {!goog.debug.Logger.Level}\n */\ngoog.debug.Logger.Level.FINE = new goog.debug.Logger.Level('FINE', 500);\n\n\n/**\n * FINER indicates a fairly detailed tracing message.\n * This level is initialized to <CODE>400</CODE>.\n * @type {!goog.debug.Logger.Level}\n */\ngoog.debug.Logger.Level.FINER = new goog.debug.Logger.Level('FINER', 400);\n\n/**\n * FINEST indicates a highly detailed tracing message.\n * This level is initialized to <CODE>300</CODE>.\n * @type {!goog.debug.Logger.Level}\n */\n\ngoog.debug.Logger.Level.FINEST = new goog.debug.Logger.Level('FINEST', 300);\n\n\n/**\n * ALL indicates that all messages should be logged.\n * This level is initialized to <CODE>0</CODE>.\n * @type {!goog.debug.Logger.Level}\n */\ngoog.debug.Logger.Level.ALL = new goog.debug.Logger.Level('ALL', 0);\n\n\n/**\n * The predefined levels.\n * @type {!Array<!goog.debug.Logger.Level>}\n * @final\n */\ngoog.debug.Logger.Level.PREDEFINED_LEVELS = [\n  goog.debug.Logger.Level.OFF, goog.debug.Logger.Level.SHOUT,\n  goog.debug.Logger.Level.SEVERE, goog.debug.Logger.Level.WARNING,\n  goog.debug.Logger.Level.INFO, goog.debug.Logger.Level.CONFIG,\n  goog.debug.Logger.Level.FINE, goog.debug.Logger.Level.FINER,\n  goog.debug.Logger.Level.FINEST, goog.debug.Logger.Level.ALL\n];\n\n\n/**\n * A lookup map used to find the level object based on the name or value of\n * the level object.\n * @type {?Object}\n * @private\n */\ngoog.debug.Logger.Level.predefinedLevelsCache_ = null;\n\n\n/**\n * Creates the predefined levels cache and populates it.\n * @private\n */\ngoog.debug.Logger.Level.createPredefinedLevelsCache_ = function() {\n  goog.debug.Logger.Level.predefinedLevelsCache_ = {};\n  for (var i = 0, level; level = goog.debug.Logger.Level.PREDEFINED_LEVELS[i];\n       i++) {\n    goog.debug.Logger.Level.predefinedLevelsCache_[level.value] = level;\n    goog.debug.Logger.Level.predefinedLevelsCache_[level.name] = level;\n  }\n};\n\n\n/**\n * Gets the predefined level with the given name.\n * @param {string} name The name of the level.\n * @return {goog.debug.Logger.Level} The level, or null if none found.\n */\ngoog.debug.Logger.Level.getPredefinedLevel = function(name) {\n  if (!goog.debug.Logger.Level.predefinedLevelsCache_) {\n    goog.debug.Logger.Level.createPredefinedLevelsCache_();\n  }\n\n  return goog.debug.Logger.Level.predefinedLevelsCache_[name] || null;\n};\n\n\n/**\n * Gets the highest predefined level <= #value.\n * @param {number} value Level value.\n * @return {goog.debug.Logger.Level} The level, or null if none found.\n */\ngoog.debug.Logger.Level.getPredefinedLevelByValue = function(value) {\n  if (!goog.debug.Logger.Level.predefinedLevelsCache_) {\n    goog.debug.Logger.Level.createPredefinedLevelsCache_();\n  }\n\n  if (value in /** @type {!Object} */ (\n          goog.debug.Logger.Level.predefinedLevelsCache_)) {\n    return goog.debug.Logger.Level.predefinedLevelsCache_[value];\n  }\n\n  for (var i = 0; i < goog.debug.Logger.Level.PREDEFINED_LEVELS.length; ++i) {\n    var level = goog.debug.Logger.Level.PREDEFINED_LEVELS[i];\n    if (level.value <= value) {\n      return level;\n    }\n  }\n  return null;\n};\n\n\n/**\n * Finds or creates a logger for a named subsystem. If a logger has already been\n * created with the given name it is returned. Otherwise a new logger is\n * created. If a new logger is created its log level will be configured based\n * on the LogManager configuration and it will configured to also send logging\n * output to its parent's handlers. It will be registered in the LogManager\n * global namespace.\n *\n * @param {string} name A name for the logger. This should be a dot-separated\n * name and should normally be based on the package name or class name of the\n * subsystem, such as goog.net.BrowserChannel.\n * @return {!goog.debug.Logger} The named logger.\n * @deprecated use {@link goog.log} instead.\n */\ngoog.debug.Logger.getLogger = function(name) {\n  return goog.debug.LogManager.getLogger(name);\n};\n\n\n/**\n * Logs a message to profiling tools, if available.\n * {@see https://developers.google.com/web-toolkit/speedtracer/logging-api}\n * {@see http://msdn.microsoft.com/en-us/library/dd433074(VS.85).aspx}\n * @param {string} msg The message to log.\n */\ngoog.debug.Logger.logToProfilers = function(msg) {\n  // Some browsers also log timeStamp calls to the console, only log\n  // if actually asked.\n  if (goog.debug.Logger.ENABLE_PROFILER_LOGGING) {\n    var msWriteProfilerMark = goog.global['msWriteProfilerMark'];\n    if (msWriteProfilerMark) {\n      // Logs a message to the Microsoft profiler\n      // On IE, console['timeStamp'] may output to console\n      msWriteProfilerMark(msg);\n      return;\n    }\n\n    // Using goog.global, as loggers might be used in window-less contexts.\n    var console = goog.global['console'];\n    if (console && console['timeStamp']) {\n      // Logs a message to Firebug, Web Inspector, SpeedTracer, etc.\n      console['timeStamp'](msg);\n    }\n  }\n};\n\n\n/**\n * Gets the name of this logger.\n * @return {string} The name of this logger.\n */\ngoog.debug.Logger.prototype.getName = function() {\n  return this.name_;\n};\n\n\n/**\n * Adds a handler to the logger. This doesn't use the event system because\n * we want to be able to add logging to the event system.\n * @param {Function} handler Handler function to add.\n */\ngoog.debug.Logger.prototype.addHandler = function(handler) {\n  if (goog.debug.LOGGING_ENABLED) {\n    if (goog.debug.Logger.ENABLE_HIERARCHY) {\n      if (!this.handlers_) {\n        this.handlers_ = [];\n      }\n      this.handlers_.push(handler);\n    } else {\n      goog.asserts.assert(\n          !this.name_, 'Cannot call addHandler on a non-root logger when ' +\n              'goog.debug.Logger.ENABLE_HIERARCHY is false.');\n      goog.debug.Logger.rootHandlers_.push(handler);\n    }\n  }\n};\n\n\n/**\n * Removes a handler from the logger. This doesn't use the event system because\n * we want to be able to add logging to the event system.\n * @param {Function} handler Handler function to remove.\n * @return {boolean} Whether the handler was removed.\n */\ngoog.debug.Logger.prototype.removeHandler = function(handler) {\n  if (goog.debug.LOGGING_ENABLED) {\n    var handlers = goog.debug.Logger.ENABLE_HIERARCHY ?\n        this.handlers_ :\n        goog.debug.Logger.rootHandlers_;\n    return !!handlers && goog.array.remove(handlers, handler);\n  } else {\n    return false;\n  }\n};\n\n\n/**\n * Returns the parent of this logger.\n * @return {goog.debug.Logger} The parent logger or null if this is the root.\n */\ngoog.debug.Logger.prototype.getParent = function() {\n  return this.parent_;\n};\n\n\n/**\n * Returns the children of this logger as a map of the child name to the logger.\n * @return {!Object} The map where the keys are the child leaf names and the\n *     values are the Logger objects.\n */\ngoog.debug.Logger.prototype.getChildren = function() {\n  if (!this.children_) {\n    this.children_ = {};\n  }\n  return this.children_;\n};\n\n\n/**\n * Set the log level specifying which message levels will be logged by this\n * logger. Message levels lower than this value will be discarded.\n * The level value Level.OFF can be used to turn off logging. If the new level\n * is null, it means that this node should inherit its level from its nearest\n * ancestor with a specific (non-null) level value.\n *\n * @param {goog.debug.Logger.Level} level The new level.\n */\ngoog.debug.Logger.prototype.setLevel = function(level) {\n  if (goog.debug.LOGGING_ENABLED) {\n    if (goog.debug.Logger.ENABLE_HIERARCHY) {\n      this.level_ = level;\n    } else {\n      goog.asserts.assert(\n          !this.name_, 'Cannot call setLevel() on a non-root logger when ' +\n              'goog.debug.Logger.ENABLE_HIERARCHY is false.');\n      goog.debug.Logger.rootLevel_ = level;\n    }\n  }\n};\n\n\n/**\n * Gets the log level specifying which message levels will be logged by this\n * logger. Message levels lower than this value will be discarded.\n * The level value Level.OFF can be used to turn off logging. If the level\n * is null, it means that this node should inherit its level from its nearest\n * ancestor with a specific (non-null) level value.\n *\n * @return {goog.debug.Logger.Level} The level.\n */\ngoog.debug.Logger.prototype.getLevel = function() {\n  return goog.debug.LOGGING_ENABLED ? this.level_ : goog.debug.Logger.Level.OFF;\n};\n\n\n/**\n * Returns the effective level of the logger based on its ancestors' levels.\n * @return {goog.debug.Logger.Level} The level.\n */\ngoog.debug.Logger.prototype.getEffectiveLevel = function() {\n  if (!goog.debug.LOGGING_ENABLED) {\n    return goog.debug.Logger.Level.OFF;\n  }\n\n  if (!goog.debug.Logger.ENABLE_HIERARCHY) {\n    return goog.debug.Logger.rootLevel_;\n  }\n  if (this.level_) {\n    return this.level_;\n  }\n  if (this.parent_) {\n    return this.parent_.getEffectiveLevel();\n  }\n  goog.asserts.fail('Root logger has no level set.');\n  return null;\n};\n\n\n/**\n * Checks if a message of the given level would actually be logged by this\n * logger. This check is based on the Loggers effective level, which may be\n * inherited from its parent.\n * @param {goog.debug.Logger.Level} level The level to check.\n * @return {boolean} Whether the message would be logged.\n */\ngoog.debug.Logger.prototype.isLoggable = function(level) {\n  return goog.debug.LOGGING_ENABLED &&\n      level.value >= this.getEffectiveLevel().value;\n};\n\n\n/**\n * Logs a message. If the logger is currently enabled for the\n * given message level then the given message is forwarded to all the\n * registered output Handler objects.\n * @param {goog.debug.Logger.Level} level One of the level identifiers.\n * @param {goog.debug.Loggable} msg The message to log.\n * @param {Error|Object=} opt_exception An exception associated with the\n *     message.\n */\ngoog.debug.Logger.prototype.log = function(level, msg, opt_exception) {\n  // java caches the effective level, not sure it's necessary here\n  if (goog.debug.LOGGING_ENABLED && this.isLoggable(level)) {\n    // Message callbacks can be useful when a log message is expensive to build.\n    if (goog.isFunction(msg)) {\n      msg = msg();\n    }\n\n    this.doLogRecord_(this.getLogRecord(level, msg, opt_exception));\n  }\n};\n\n\n/**\n * Creates a new log record and adds the exception (if present) to it.\n * @param {goog.debug.Logger.Level} level One of the level identifiers.\n * @param {string} msg The string message.\n * @param {Error|Object=} opt_exception An exception associated with the\n *     message.\n * @return {!goog.debug.LogRecord} A log record.\n * @suppress {es5Strict}\n */\ngoog.debug.Logger.prototype.getLogRecord = function(level, msg, opt_exception) {\n  if (goog.debug.LogBuffer.isBufferingEnabled()) {\n    var logRecord =\n        goog.debug.LogBuffer.getInstance().addRecord(level, msg, this.name_);\n  } else {\n    logRecord = new goog.debug.LogRecord(level, String(msg), this.name_);\n  }\n  if (opt_exception) {\n    logRecord.setException(opt_exception);\n  }\n  return logRecord;\n};\n\n\n/**\n * Logs a message at the Logger.Level.SHOUT level.\n * If the logger is currently enabled for the given message level then the\n * given message is forwarded to all the registered output Handler objects.\n * @param {goog.debug.Loggable} msg The message to log.\n * @param {Error=} opt_exception An exception associated with the message.\n */\ngoog.debug.Logger.prototype.shout = function(msg, opt_exception) {\n  if (goog.debug.LOGGING_ENABLED) {\n    this.log(goog.debug.Logger.Level.SHOUT, msg, opt_exception);\n  }\n};\n\n\n/**\n * Logs a message at the Logger.Level.SEVERE level.\n * If the logger is currently enabled for the given message level then the\n * given message is forwarded to all the registered output Handler objects.\n * @param {goog.debug.Loggable} msg The message to log.\n * @param {Error=} opt_exception An exception associated with the message.\n */\ngoog.debug.Logger.prototype.severe = function(msg, opt_exception) {\n  if (goog.debug.LOGGING_ENABLED) {\n    this.log(goog.debug.Logger.Level.SEVERE, msg, opt_exception);\n  }\n};\n\n\n/**\n * Logs a message at the Logger.Level.WARNING level.\n * If the logger is currently enabled for the given message level then the\n * given message is forwarded to all the registered output Handler objects.\n * @param {goog.debug.Loggable} msg The message to log.\n * @param {Error=} opt_exception An exception associated with the message.\n */\ngoog.debug.Logger.prototype.warning = function(msg, opt_exception) {\n  if (goog.debug.LOGGING_ENABLED) {\n    this.log(goog.debug.Logger.Level.WARNING, msg, opt_exception);\n  }\n};\n\n\n/**\n * Logs a message at the Logger.Level.INFO level.\n * If the logger is currently enabled for the given message level then the\n * given message is forwarded to all the registered output Handler objects.\n * @param {goog.debug.Loggable} msg The message to log.\n * @param {Error=} opt_exception An exception associated with the message.\n */\ngoog.debug.Logger.prototype.info = function(msg, opt_exception) {\n  if (goog.debug.LOGGING_ENABLED) {\n    this.log(goog.debug.Logger.Level.INFO, msg, opt_exception);\n  }\n};\n\n\n/**\n * Logs a message at the Logger.Level.CONFIG level.\n * If the logger is currently enabled for the given message level then the\n * given message is forwarded to all the registered output Handler objects.\n * @param {goog.debug.Loggable} msg The message to log.\n * @param {Error=} opt_exception An exception associated with the message.\n */\ngoog.debug.Logger.prototype.config = function(msg, opt_exception) {\n  if (goog.debug.LOGGING_ENABLED) {\n    this.log(goog.debug.Logger.Level.CONFIG, msg, opt_exception);\n  }\n};\n\n\n/**\n * Logs a message at the Logger.Level.FINE level.\n * If the logger is currently enabled for the given message level then the\n * given message is forwarded to all the registered output Handler objects.\n * @param {goog.debug.Loggable} msg The message to log.\n * @param {Error=} opt_exception An exception associated with the message.\n */\ngoog.debug.Logger.prototype.fine = function(msg, opt_exception) {\n  if (goog.debug.LOGGING_ENABLED) {\n    this.log(goog.debug.Logger.Level.FINE, msg, opt_exception);\n  }\n};\n\n\n/**\n * Logs a message at the Logger.Level.FINER level.\n * If the logger is currently enabled for the given message level then the\n * given message is forwarded to all the registered output Handler objects.\n * @param {goog.debug.Loggable} msg The message to log.\n * @param {Error=} opt_exception An exception associated with the message.\n */\ngoog.debug.Logger.prototype.finer = function(msg, opt_exception) {\n  if (goog.debug.LOGGING_ENABLED) {\n    this.log(goog.debug.Logger.Level.FINER, msg, opt_exception);\n  }\n};\n\n\n/**\n * Logs a message at the Logger.Level.FINEST level.\n * If the logger is currently enabled for the given message level then the\n * given message is forwarded to all the registered output Handler objects.\n * @param {goog.debug.Loggable} msg The message to log.\n * @param {Error=} opt_exception An exception associated with the message.\n */\ngoog.debug.Logger.prototype.finest = function(msg, opt_exception) {\n  if (goog.debug.LOGGING_ENABLED) {\n    this.log(goog.debug.Logger.Level.FINEST, msg, opt_exception);\n  }\n};\n\n\n/**\n * Logs a LogRecord. If the logger is currently enabled for the\n * given message level then the given message is forwarded to all the\n * registered output Handler objects.\n * @param {goog.debug.LogRecord} logRecord A log record to log.\n */\ngoog.debug.Logger.prototype.logRecord = function(logRecord) {\n  if (goog.debug.LOGGING_ENABLED && this.isLoggable(logRecord.getLevel())) {\n    this.doLogRecord_(logRecord);\n  }\n};\n\n\n/**\n * Logs a LogRecord.\n * @param {goog.debug.LogRecord} logRecord A log record to log.\n * @private\n */\ngoog.debug.Logger.prototype.doLogRecord_ = function(logRecord) {\n  if (goog.debug.Logger.ENABLE_PROFILER_LOGGING) {\n    goog.debug.Logger.logToProfilers('log:' + logRecord.getMessage());\n  }\n  if (goog.debug.Logger.ENABLE_HIERARCHY) {\n    var target = this;\n    while (target) {\n      target.callPublish_(logRecord);\n      target = target.getParent();\n    }\n  } else {\n    for (var i = 0, handler; handler = goog.debug.Logger.rootHandlers_[i++];) {\n      handler(logRecord);\n    }\n  }\n};\n\n\n/**\n * Calls the handlers for publish.\n * @param {goog.debug.LogRecord} logRecord The log record to publish.\n * @private\n */\ngoog.debug.Logger.prototype.callPublish_ = function(logRecord) {\n  if (this.handlers_) {\n    for (var i = 0, handler; handler = this.handlers_[i]; i++) {\n      handler(logRecord);\n    }\n  }\n};\n\n\n/**\n * Sets the parent of this logger. This is used for setting up the logger tree.\n * @param {goog.debug.Logger} parent The parent logger.\n * @private\n */\ngoog.debug.Logger.prototype.setParent_ = function(parent) {\n  this.parent_ = parent;\n};\n\n\n/**\n * Adds a child to this logger. This is used for setting up the logger tree.\n * @param {string} name The leaf name of the child.\n * @param {goog.debug.Logger} logger The child logger.\n * @private\n */\ngoog.debug.Logger.prototype.addChild_ = function(name, logger) {\n  this.getChildren()[name] = logger;\n};\n\n\n/**\n * There is a single global LogManager object that is used to maintain a set of\n * shared state about Loggers and log services. This is loosely based on the\n * java class java.util.logging.LogManager.\n * @const\n */\ngoog.debug.LogManager = {};\n\n\n/**\n * Map of logger names to logger objects.\n *\n * @type {!Object<string, !goog.debug.Logger>}\n * @private\n */\ngoog.debug.LogManager.loggers_ = {};\n\n\n/**\n * The root logger which is the root of the logger tree.\n * @type {?goog.debug.Logger}\n * @private\n */\ngoog.debug.LogManager.rootLogger_ = null;\n\n\n/**\n * Initializes the LogManager if not already initialized.\n */\ngoog.debug.LogManager.initialize = function() {\n  if (!goog.debug.LogManager.rootLogger_) {\n    goog.debug.LogManager.rootLogger_ =\n        new goog.debug.Logger(goog.debug.Logger.ROOT_LOGGER_NAME);\n    goog.debug.LogManager.loggers_[goog.debug.Logger.ROOT_LOGGER_NAME] =\n        goog.debug.LogManager.rootLogger_;\n    goog.debug.LogManager.rootLogger_.setLevel(goog.debug.Logger.Level.CONFIG);\n  }\n};\n\n\n/**\n * Returns all the loggers.\n * @return {!Object<string, !goog.debug.Logger>} Map of logger names to logger\n *     objects.\n */\ngoog.debug.LogManager.getLoggers = function() {\n  return goog.debug.LogManager.loggers_;\n};\n\n\n/**\n * Returns the root of the logger tree namespace, the logger with the empty\n * string as its name.\n *\n * @return {!goog.debug.Logger} The root logger.\n */\ngoog.debug.LogManager.getRoot = function() {\n  goog.debug.LogManager.initialize();\n  return /** @type {!goog.debug.Logger} */ (goog.debug.LogManager.rootLogger_);\n};\n\n\n/**\n * Finds a named logger.\n *\n * @param {string} name A name for the logger. This should be a dot-separated\n * name and should normally be based on the package name or class name of the\n * subsystem, such as goog.net.BrowserChannel.\n * @return {!goog.debug.Logger} The named logger.\n */\ngoog.debug.LogManager.getLogger = function(name) {\n  goog.debug.LogManager.initialize();\n  var ret = goog.debug.LogManager.loggers_[name];\n  return ret || goog.debug.LogManager.createLogger_(name);\n};\n\n\n/**\n * Creates a function that can be passed to goog.debug.catchErrors. The function\n * will log all reported errors using the given logger.\n * @param {goog.debug.Logger=} opt_logger The logger to log the errors to.\n *     Defaults to the root logger.\n * @return {function(Object)} The created function.\n */\ngoog.debug.LogManager.createFunctionForCatchErrors = function(opt_logger) {\n  return function(info) {\n    var logger = opt_logger || goog.debug.LogManager.getRoot();\n    logger.severe(\n        'Error: ' + info.message + ' (' + info.fileName + ' @ Line: ' +\n        info.line + ')');\n  };\n};\n\n\n/**\n * Creates the named logger. Will also create the parents of the named logger\n * if they don't yet exist.\n * @param {string} name The name of the logger.\n * @return {!goog.debug.Logger} The named logger.\n * @private\n */\ngoog.debug.LogManager.createLogger_ = function(name) {\n  // find parent logger\n  var logger = new goog.debug.Logger(name);\n  if (goog.debug.Logger.ENABLE_HIERARCHY) {\n    var lastDotIndex = name.lastIndexOf('.');\n    var parentName = name.substr(0, lastDotIndex);\n    var leafName = name.substr(lastDotIndex + 1);\n    var parentLogger = goog.debug.LogManager.getLogger(parentName);\n\n    // tell the parent about the child and the child about the parent\n    parentLogger.addChild_(leafName, logger);\n    logger.setParent_(parentLogger);\n  }\n\n  goog.debug.LogManager.loggers_[name] = logger;\n  return logger;\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Utilities for creating functions. Loosely inspired by these\n * java classes from the Guava library:\n * com.google.common.base.Functions\n * https://google.github.io/guava/releases/snapshot-jre/api/docs/index.html?com/google/common/base/Functions.html\n *\n * com.google.common.base.Predicates\n * https://google.github.io/guava/releases/snapshot-jre/api/docs/index.html?com/google/common/base/Predicates.html\n *\n * More about these can be found at\n * https://github.com/google/guava/wiki/FunctionalExplained\n */\n\n\ngoog.provide('goog.functions');\n\n\n/**\n * Creates a function that always returns the same value.\n * @param {T} retValue The value to return.\n * @return {function():T} The new function.\n * @template T\n */\ngoog.functions.constant = function(retValue) {\n  return function() { return retValue; };\n};\n\n\n/**\n * Always returns false.\n * @type {function(...): boolean}\n */\ngoog.functions.FALSE = function() {\n  return false;\n};\n\n\n/**\n * Always returns true.\n * @type {function(...): boolean}\n */\ngoog.functions.TRUE = function() {\n  return true;\n};\n\n\n/**\n * Always returns NULL.\n * @type {function(...): null}\n */\ngoog.functions.NULL = function() {\n  return null;\n};\n\n\n/**\n * A simple function that returns the first argument of whatever is passed\n * into it.\n * @param {T=} opt_returnValue The single value that will be returned.\n * @param {...*} var_args Optional trailing arguments. These are ignored.\n * @return {T} The first argument passed in, or undefined if nothing was passed.\n * @template T\n */\ngoog.functions.identity = function(opt_returnValue, var_args) {\n  return opt_returnValue;\n};\n\n\n/**\n * Creates a function that always throws an error with the given message.\n * @param {string} message The error message.\n * @return {!Function} The error-throwing function.\n */\ngoog.functions.error = function(message) {\n  return function() {\n    throw new Error(message);\n  };\n};\n\n\n/**\n * Creates a function that throws the given object.\n * @param {*} err An object to be thrown.\n * @return {!Function} The error-throwing function.\n */\ngoog.functions.fail = function(err) {\n  return function() { throw err; };\n};\n\n\n/**\n * Given a function, create a function that keeps opt_numArgs arguments and\n * silently discards all additional arguments.\n * @param {Function} f The original function.\n * @param {number=} opt_numArgs The number of arguments to keep. Defaults to 0.\n * @return {!Function} A version of f that only keeps the first opt_numArgs\n *     arguments.\n */\ngoog.functions.lock = function(f, opt_numArgs) {\n  opt_numArgs = opt_numArgs || 0;\n  return function() {\n    const self = /** @type {*} */ (this);\n    return f.apply(self, Array.prototype.slice.call(arguments, 0, opt_numArgs));\n  };\n};\n\n\n/**\n * Creates a function that returns its nth argument.\n * @param {number} n The position of the return argument.\n * @return {!Function} A new function.\n */\ngoog.functions.nth = function(n) {\n  return function() { return arguments[n]; };\n};\n\n\n/**\n * Like goog.partial(), except that arguments are added after arguments to the\n * returned function.\n *\n * Usage:\n * function f(arg1, arg2, arg3, arg4) { ... }\n * var g = goog.functions.partialRight(f, arg3, arg4);\n * g(arg1, arg2);\n *\n * @param {!Function} fn A function to partially apply.\n * @param {...*} var_args Additional arguments that are partially applied to fn\n *     at the end.\n * @return {!Function} A partially-applied form of the function goog.partial()\n *     was invoked as a method of.\n */\ngoog.functions.partialRight = function(fn, var_args) {\n  const rightArgs = Array.prototype.slice.call(arguments, 1);\n  return function() {\n    const self = /** @type {*} */ (this);\n    const newArgs = Array.prototype.slice.call(arguments);\n    newArgs.push.apply(newArgs, rightArgs);\n    return fn.apply(self, newArgs);\n  };\n};\n\n\n/**\n * Given a function, create a new function that swallows its return value\n * and replaces it with a new one.\n * @param {Function} f A function.\n * @param {T} retValue A new return value.\n * @return {function(...?):T} A new function.\n * @template T\n */\ngoog.functions.withReturnValue = function(f, retValue) {\n  return goog.functions.sequence(f, goog.functions.constant(retValue));\n};\n\n\n/**\n * Creates a function that returns whether its argument equals the given value.\n *\n * Example:\n * var key = goog.object.findKey(obj, goog.functions.equalTo('needle'));\n *\n * @param {*} value The value to compare to.\n * @param {boolean=} opt_useLooseComparison Whether to use a loose (==)\n *     comparison rather than a strict (===) one. Defaults to false.\n * @return {function(*):boolean} The new function.\n */\ngoog.functions.equalTo = function(value, opt_useLooseComparison) {\n  return function(other) {\n    return opt_useLooseComparison ? (value == other) : (value === other);\n  };\n};\n\n\n/**\n * Creates the composition of the functions passed in.\n * For example, (goog.functions.compose(f, g))(a) is equivalent to f(g(a)).\n * @param {function(...?):T} fn The final function.\n * @param {...Function} var_args A list of functions.\n * @return {function(...?):T} The composition of all inputs.\n * @template T\n */\ngoog.functions.compose = function(fn, var_args) {\n  const functions = arguments;\n  const length = functions.length;\n  return function() {\n    const self = /** @type {*} */ (this);\n    let result;\n    if (length) {\n      result = functions[length - 1].apply(self, arguments);\n    }\n\n    for (let i = length - 2; i >= 0; i--) {\n      result = functions[i].call(self, result);\n    }\n    return result;\n  };\n};\n\n\n/**\n * Creates a function that calls the functions passed in in sequence, and\n * returns the value of the last function. For example,\n * (goog.functions.sequence(f, g))(x) is equivalent to f(x),g(x).\n * @param {...Function} var_args A list of functions.\n * @return {!Function} A function that calls all inputs in sequence.\n */\ngoog.functions.sequence = function(var_args) {\n  const functions = arguments;\n  const length = functions.length;\n  return function() {\n    const self = /** @type {*} */ (this);\n    let result;\n    for (let i = 0; i < length; i++) {\n      result = functions[i].apply(self, arguments);\n    }\n    return result;\n  };\n};\n\n\n/**\n * Creates a function that returns true if each of its components evaluates\n * to true. The components are evaluated in order, and the evaluation will be\n * short-circuited as soon as a function returns false.\n * For example, (goog.functions.and(f, g))(x) is equivalent to f(x) && g(x).\n * @param {...Function} var_args A list of functions.\n * @return {function(...?):boolean} A function that ANDs its component\n *      functions.\n */\ngoog.functions.and = function(var_args) {\n  const functions = arguments;\n  const length = functions.length;\n  return function() {\n    const self = /** @type {*} */ (this);\n    for (let i = 0; i < length; i++) {\n      if (!functions[i].apply(self, arguments)) {\n        return false;\n      }\n    }\n    return true;\n  };\n};\n\n\n/**\n * Creates a function that returns true if any of its components evaluates\n * to true. The components are evaluated in order, and the evaluation will be\n * short-circuited as soon as a function returns true.\n * For example, (goog.functions.or(f, g))(x) is equivalent to f(x) || g(x).\n * @param {...Function} var_args A list of functions.\n * @return {function(...?):boolean} A function that ORs its component\n *    functions.\n */\ngoog.functions.or = function(var_args) {\n  const functions = arguments;\n  const length = functions.length;\n  return function() {\n    const self = /** @type {*} */ (this);\n    for (let i = 0; i < length; i++) {\n      if (functions[i].apply(self, arguments)) {\n        return true;\n      }\n    }\n    return false;\n  };\n};\n\n\n/**\n * Creates a function that returns the Boolean opposite of a provided function.\n * For example, (goog.functions.not(f))(x) is equivalent to !f(x).\n * @param {!Function} f The original function.\n * @return {function(...?):boolean} A function that delegates to f and returns\n * opposite.\n */\ngoog.functions.not = function(f) {\n  return function() {\n    const self = /** @type {*} */ (this);\n    return !f.apply(self, arguments);\n  };\n};\n\n\n/**\n * Generic factory function to construct an object given the constructor\n * and the arguments. Intended to be bound to create object factories.\n *\n * Example:\n *\n * var factory = goog.partial(goog.functions.create, Class);\n *\n * @param {function(new:T, ...)} constructor The constructor for the Object.\n * @param {...*} var_args The arguments to be passed to the constructor.\n * @return {T} A new instance of the class given in `constructor`.\n * @template T\n * @deprecated This function does not work with ES6 class constructors. Use\n *     arrow functions + spread args instead.\n */\ngoog.functions.create = function(constructor, var_args) {\n  /**\n   * @constructor\n   * @final\n   */\n  const temp = function() {};\n  temp.prototype = constructor.prototype;\n\n  // obj will have constructor's prototype in its chain and\n  // 'obj instanceof constructor' will be true.\n  const obj = new temp();\n\n  // obj is initialized by constructor.\n  // arguments is only array-like so lacks shift(), but can be used with\n  // the Array prototype function.\n  constructor.apply(obj, Array.prototype.slice.call(arguments, 1));\n  return obj;\n};\n\n\n/**\n * @define {boolean} Whether the return value cache should be used.\n *    This should only be used to disable caches when testing.\n */\ngoog.functions.CACHE_RETURN_VALUE =\n    goog.define('goog.functions.CACHE_RETURN_VALUE', true);\n\n\n/**\n * Gives a wrapper function that caches the return value of a parameterless\n * function when first called.\n *\n * When called for the first time, the given function is called and its\n * return value is cached (thus this is only appropriate for idempotent\n * functions).  Subsequent calls will return the cached return value. This\n * allows the evaluation of expensive functions to be delayed until first used.\n *\n * To cache the return values of functions with parameters, see goog.memoize.\n *\n * @param {function():T} fn A function to lazily evaluate.\n * @return {function():T} A wrapped version the function.\n * @template T\n */\ngoog.functions.cacheReturnValue = function(fn) {\n  let called = false;\n  let value;\n\n  return function() {\n    if (!goog.functions.CACHE_RETURN_VALUE) {\n      return fn();\n    }\n\n    if (!called) {\n      value = fn();\n      called = true;\n    }\n\n    return value;\n  };\n};\n\n\n/**\n * Wraps a function to allow it to be called, at most, once. All\n * additional calls are no-ops.\n *\n * This is particularly useful for initialization functions\n * that should be called, at most, once.\n *\n * @param {function():*} f Function to call.\n * @return {function():undefined} Wrapped function.\n */\ngoog.functions.once = function(f) {\n  // Keep a reference to the function that we null out when we're done with\n  // it -- that way, the function can be GC'd when we're done with it.\n  let inner = f;\n  return function() {\n    if (inner) {\n      const tmp = inner;\n      inner = null;\n      tmp();\n    }\n  };\n};\n\n\n/**\n * Wraps a function to allow it to be called, at most, once per interval\n * (specified in milliseconds). If the wrapper function is called N times within\n * that interval, only the Nth call will go through.\n *\n * This is particularly useful for batching up repeated actions where the\n * last action should win. This can be used, for example, for refreshing an\n * autocomplete pop-up every so often rather than updating with every keystroke,\n * since the final text typed by the user is the one that should produce the\n * final autocomplete results. For more stateful debouncing with support for\n * pausing, resuming, and canceling debounced actions, use\n * `goog.async.Debouncer`.\n *\n * @param {function(this:SCOPE, ...?)} f Function to call.\n * @param {number} interval Interval over which to debounce. The function will\n *     only be called after the full interval has elapsed since the last call.\n * @param {SCOPE=} opt_scope Object in whose scope to call the function.\n * @return {function(...?): undefined} Wrapped function.\n * @template SCOPE\n */\ngoog.functions.debounce = function(f, interval, opt_scope) {\n  let timeout = 0;\n  return /** @type {function(...?)} */ (function(var_args) {\n    goog.global.clearTimeout(timeout);\n    const args = arguments;\n    timeout = goog.global.setTimeout(function() {\n      f.apply(opt_scope, args);\n    }, interval);\n  });\n};\n\n\n/**\n * Wraps a function to allow it to be called, at most, once per interval\n * (specified in milliseconds). If the wrapper function is called N times in\n * that interval, both the 1st and the Nth calls will go through.\n *\n * This is particularly useful for limiting repeated user requests where the\n * the last action should win, but you also don't want to wait until the end of\n * the interval before sending a request out, as it leads to a perception of\n * slowness for the user.\n *\n * @param {function(this:SCOPE, ...?)} f Function to call.\n * @param {number} interval Interval over which to throttle. The function can\n *     only be called once per interval.\n * @param {SCOPE=} opt_scope Object in whose scope to call the function.\n * @return {function(...?): undefined} Wrapped function.\n * @template SCOPE\n */\ngoog.functions.throttle = function(f, interval, opt_scope) {\n  let timeout = 0;\n  let shouldFire = false;\n  let args = [];\n\n  const handleTimeout = function() {\n    timeout = 0;\n    if (shouldFire) {\n      shouldFire = false;\n      fire();\n    }\n  };\n\n  const fire = function() {\n    timeout = goog.global.setTimeout(handleTimeout, interval);\n    f.apply(opt_scope, args);\n  };\n\n  return /** @type {function(...?)} */ (function(var_args) {\n    args = arguments;\n    if (!timeout) {\n      fire();\n    } else {\n      shouldFire = true;\n    }\n  });\n};\n\n\n/**\n * Wraps a function to allow it to be called, at most, once per interval\n * (specified in milliseconds). If the wrapper function is called N times within\n * that interval, only the 1st call will go through.\n *\n * This is particularly useful for limiting repeated user requests where the\n * first request is guaranteed to have all the data required to perform the\n * final action, so there's no need to wait until the end of the interval before\n * sending the request out.\n *\n * @param {function(this:SCOPE, ...?)} f Function to call.\n * @param {number} interval Interval over which to rate-limit. The function will\n *     only be called once per interval, and ignored for the remainer of the\n *     interval.\n * @param {SCOPE=} opt_scope Object in whose scope to call the function.\n * @return {function(...?): undefined} Wrapped function.\n * @template SCOPE\n */\ngoog.functions.rateLimit = function(f, interval, opt_scope) {\n  let timeout = 0;\n\n  const handleTimeout = function() {\n    timeout = 0;\n  };\n\n  return /** @type {function(...?)} */ (function(var_args) {\n    if (!timeout) {\n      timeout = goog.global.setTimeout(handleTimeout, interval);\n      f.apply(opt_scope, arguments);\n    }\n  });\n};\n\n/**\n * Returns true if the specified value is a function.\n * @param {*} val Variable to test.\n * @return {boolean} Whether variable is a function.\n */\ngoog.functions.isFunction = (val) => {\n  return typeof val === 'function';\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Basic strippable logging definitions.\n * @see http://go/closurelogging\n */\n\ngoog.provide('goog.log');\ngoog.provide('goog.log.Level');\ngoog.provide('goog.log.LogRecord');\ngoog.provide('goog.log.Logger');\n\ngoog.require('goog.debug');\ngoog.require('goog.debug.LogBuffer');\ngoog.require('goog.debug.LogManager');\ngoog.require('goog.debug.LogRecord');\ngoog.require('goog.debug.Logger');\ngoog.requireType('goog.debug.Loggable');\n\n\n/** @define {boolean} Whether logging is enabled. */\ngoog.log.ENABLED = goog.define('goog.log.ENABLED', goog.debug.LOGGING_ENABLED);\n\n\n/** @const {string} */\ngoog.log.ROOT_LOGGER_NAME = goog.debug.Logger.ROOT_LOGGER_NAME;\n\n\n\n/**\n * @constructor\n * @final\n */\ngoog.log.Logger = goog.debug.Logger;\n\n\n\n/**\n * @constructor\n * @final\n */\ngoog.log.Level = goog.debug.Logger.Level;\n\n\n\n/**\n * @constructor\n * @final\n */\ngoog.log.LogRecord = goog.debug.LogRecord;\n\n\n/**\n * For access of goog.log.LogBuffer.CAPACITY only.\n * @constructor\n * @final\n */\ngoog.log.LogBuffer = goog.debug.LogBuffer;\n\n\n/**\n * Finds or creates a logger for a named subsystem. If a logger has already been\n * created with the given name it is returned. Otherwise a new logger is\n * created. If a new logger is created its log level will be configured based\n * on the goog.debug.LogManager configuration and it will configured to also\n * send logging output to its parent's handlers.\n * @see goog.debug.LogManager\n *\n * @param {string} name A name for the logger. This should be a dot-separated\n *     name and should normally be based on the package name or class name of\n *     the subsystem, such as goog.net.BrowserChannel.\n * @param {goog.log.Level=} opt_level If provided, override the\n *     default logging level with the provided level.\n * @return {goog.log.Logger} The named logger or null if logging is disabled.\n */\ngoog.log.getLogger = function(name, opt_level) {\n  if (goog.log.ENABLED) {\n    var logger = goog.debug.LogManager.getLogger(name);\n    if (opt_level && logger) {\n      logger.setLevel(opt_level);\n    }\n    return logger;\n  } else {\n    return null;\n  }\n};\n\n\n/**\n * Returns the root logger.\n *\n * @return {?goog.log.Logger} The root logger, or null if logging is disabled.\n */\ngoog.log.getRootLogger = function() {\n  return goog.log.getLogger(goog.log.ROOT_LOGGER_NAME);\n};\n\n\n// TODO(johnlenz): try to tighten the types to these functions.\n/**\n * Adds a handler to the logger. This doesn't use the event system because\n * we want to be able to add logging to the event system.\n * @param {goog.log.Logger} logger\n * @param {Function} handler Handler function to add.\n */\ngoog.log.addHandler = function(logger, handler) {\n  if (goog.log.ENABLED && logger) {\n    logger.addHandler(handler);\n  }\n};\n\n\n/**\n * Removes a handler from the logger. This doesn't use the event system because\n * we want to be able to add logging to the event system.\n * @param {goog.log.Logger} logger\n * @param {Function} handler Handler function to remove.\n * @return {boolean} Whether the handler was removed.\n */\ngoog.log.removeHandler = function(logger, handler) {\n  if (goog.log.ENABLED && logger) {\n    return logger.removeHandler(handler);\n  } else {\n    return false;\n  }\n};\n\n\n/**\n * Set the log level specifying which message levels will be logged by the\n * given logger.\n * @param {?goog.log.Logger} logger\n * @param {?goog.debug.Logger.Level} level The level to set.\n */\ngoog.log.setLevel = function(logger, level) {\n  if (goog.log.ENABLED && logger) {\n    logger.setLevel(level);\n  }\n};\n\n\n/**\n * Gets the log level specifying which message levels will be logged by this\n * logger. Message levels lower than this value will be discarded.\n * The level value Level.OFF can be used to turn off logging. If the level\n * is null, it means that this node should inherit its level from its\n * nearest ancestor with a specific (non-null) level value.\n * @param {?goog.log.Logger} logger\n * @return {?goog.debug.Logger.Level} The level.\n */\ngoog.log.getLevel = function(logger) {\n  if (goog.log.ENABLED && logger) {\n    return logger.getLevel();\n  }\n  return null;\n};\n\n\n/**\n * Returns the effective level of the logger based on its ancestors'\n * levels.\n * @param {?goog.log.Logger} logger\n * @return {?goog.debug.Logger.Level} The level.\n */\ngoog.log.getEffectiveLevel = function(logger) {\n  if (goog.log.ENABLED && logger) {\n    return logger.getEffectiveLevel();\n  }\n  return null;\n};\n\n\n/**\n * Checks if a message of the given level would actually be logged\n * by this logger. This check is based on the Loggers effective\n * level, which may be inherited from its parent.\n * @param {?goog.log.Logger} logger\n * @param {?goog.debug.Logger.Level} level The level to check.\n * @return {boolean} Whether the message would be logged.\n */\ngoog.log.isLoggable = function(logger, level) {\n  if (goog.log.ENABLED && logger) {\n    return logger.isLoggable(level);\n  }\n  return false;\n};\n\n\n/**\n * Creates a new log record and adds the exception (if present) to it.\n * @param {?goog.log.Logger} logger\n * @param {?goog.debug.Logger.Level} level One of the level identifiers.\n * @param {string} msg The string message.\n * @param {?Error|?Object=} opt_exception An exception associated with the\n *     message.\n * @return {?goog.debug.LogRecord} A log record.\n */\ngoog.log.getLogRecord = function(logger, level, msg, opt_exception) {\n  if (goog.log.ENABLED && logger) {\n    return logger.getLogRecord(level, msg, opt_exception);\n  }\n  return null;\n};\n\n\n/**\n * Logs a LogRecord. If the logger is currently enabled for the\n * given message level then the given message is forwarded to all the\n * registered output Handler objects.\n * @param {?goog.log.Logger} logger\n * @param {?goog.debug.LogRecord} logRecord A log record to log.\n */\ngoog.log.publishLogRecord = function(logger, logRecord) {\n  if (goog.log.ENABLED && logger) {\n    logger.logRecord(logRecord);\n  }\n};\n\n\n/**\n * Logs a message. If the logger is currently enabled for the\n * given message level then the given message is forwarded to all the\n * registered output Handler objects.\n * @param {goog.log.Logger} logger\n * @param {goog.log.Level} level One of the level identifiers.\n * @param {goog.debug.Loggable} msg The message to log.\n * @param {Error|Object=} opt_exception An exception associated with the\n *     message.\n */\ngoog.log.log = function(logger, level, msg, opt_exception) {\n  if (goog.log.ENABLED && logger) {\n    logger.log(level, msg, opt_exception);\n  }\n};\n\n\n/**\n * Logs a message at the Level.SEVERE level.\n * If the logger is currently enabled for the given message level then the\n * given message is forwarded to all the registered output Handler objects.\n * @param {goog.log.Logger} logger\n * @param {goog.debug.Loggable} msg The message to log.\n * @param {Error=} opt_exception An exception associated with the message.\n */\ngoog.log.error = function(logger, msg, opt_exception) {\n  if (goog.log.ENABLED && logger) {\n    logger.severe(msg, opt_exception);\n  }\n};\n\n\n/**\n * Logs a message at the Level.WARNING level.\n * If the logger is currently enabled for the given message level then the\n * given message is forwarded to all the registered output Handler objects.\n * @param {goog.log.Logger} logger\n * @param {goog.debug.Loggable} msg The message to log.\n * @param {Error=} opt_exception An exception associated with the message.\n */\ngoog.log.warning = function(logger, msg, opt_exception) {\n  if (goog.log.ENABLED && logger) {\n    logger.warning(msg, opt_exception);\n  }\n};\n\n\n/**\n * Logs a message at the Level.INFO level.\n * If the logger is currently enabled for the given message level then the\n * given message is forwarded to all the registered output Handler objects.\n * @param {goog.log.Logger} logger\n * @param {goog.debug.Loggable} msg The message to log.\n * @param {Error=} opt_exception An exception associated with the message.\n */\ngoog.log.info = function(logger, msg, opt_exception) {\n  if (goog.log.ENABLED && logger) {\n    logger.info(msg, opt_exception);\n  }\n};\n\n\n/**\n * Logs a message at the Level.Fine level.\n * If the logger is currently enabled for the given message level then the\n * given message is forwarded to all the registered output Handler objects.\n * @param {goog.log.Logger} logger\n * @param {goog.debug.Loggable} msg The message to log.\n * @param {Error=} opt_exception An exception associated with the message.\n */\ngoog.log.fine = function(logger, msg, opt_exception) {\n  if (goog.log.ENABLED && logger) {\n    logger.fine(msg, opt_exception);\n  }\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\ngoog.provide('goog.net.FetchXmlHttp');\ngoog.provide('goog.net.FetchXmlHttpFactory');\n\ngoog.require('goog.asserts');\ngoog.require('goog.events.EventTarget');\ngoog.require('goog.functions');\ngoog.require('goog.log');\ngoog.require('goog.net.XhrLike');\ngoog.require('goog.net.XmlHttpFactory');\n\n\n\n/**\n * Factory for creating Xhr objects that uses the native fetch() method.\n * https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API\n * Note that this factory is intended for use in Service Worker only.\n * @param {!WorkerGlobalScope} worker The Service Worker global scope.\n * @extends {goog.net.XmlHttpFactory}\n * @struct\n * @constructor\n */\ngoog.net.FetchXmlHttpFactory = function(worker) {\n  goog.net.FetchXmlHttpFactory.base(this, 'constructor');\n\n  /** @private @final {!WorkerGlobalScope} */\n  this.worker_ = worker;\n\n  /** @private {!RequestCredentials|undefined} */\n  this.credentialsMode_ = undefined;\n\n  /** @private {!RequestCache|undefined} */\n  this.cacheMode_ = undefined;\n};\ngoog.inherits(goog.net.FetchXmlHttpFactory, goog.net.XmlHttpFactory);\n\n\n/** @override */\ngoog.net.FetchXmlHttpFactory.prototype.createInstance = function() {\n  var instance = new goog.net.FetchXmlHttp(this.worker_);\n  if (this.credentialsMode_) {\n    instance.setCredentialsMode(this.credentialsMode_);\n  }\n  if (this.cacheMode_) {\n    instance.setCacheMode(this.cacheMode_);\n  }\n  return instance;\n};\n\n\n/** @override */\ngoog.net.FetchXmlHttpFactory.prototype.internalGetOptions =\n    goog.functions.constant({});\n\n\n/**\n * @param {!RequestCredentials} credentialsMode The credentials mode of the\n *     Service Worker fetch.\n */\ngoog.net.FetchXmlHttpFactory.prototype.setCredentialsMode = function(\n    credentialsMode) {\n  this.credentialsMode_ = credentialsMode;\n};\n\n\n/**\n * @param {!RequestCache} cacheMode The cache mode of the Service Worker fetch.\n */\ngoog.net.FetchXmlHttpFactory.prototype.setCacheMode = function(cacheMode) {\n  this.cacheMode_ = cacheMode;\n};\n\n\n\n/**\n * FetchXmlHttp object constructor.\n * @param {!WorkerGlobalScope} worker\n * @extends {goog.events.EventTarget}\n * @implements {goog.net.XhrLike}\n * @constructor\n * @struct\n */\ngoog.net.FetchXmlHttp = function(worker) {\n  goog.net.FetchXmlHttp.base(this, 'constructor');\n\n  /** @private @final {!WorkerGlobalScope} */\n  this.worker_ = worker;\n\n  /** @private {RequestCredentials|undefined} */\n  this.credentialsMode_ = undefined;\n\n  /** @private {RequestCache|undefined} */\n  this.cacheMode_ = undefined;\n\n  /**\n   * Request state.\n   * @type {goog.net.FetchXmlHttp.RequestState}\n   */\n  this.readyState = goog.net.FetchXmlHttp.RequestState.UNSENT;\n\n  /**\n   * HTTP status.\n   * @type {number}\n   */\n  this.status = 0;\n\n  /**\n   * HTTP status string.\n   * @type {string}\n   */\n  this.statusText = '';\n\n  /**\n   * Content of the response.\n   * @type {string|!ArrayBuffer}\n   */\n  this.response = '';\n\n  /**\n   * Content of the response.\n   * @type {string}\n   */\n  this.responseText = '';\n\n  /**\n   * The type of the response.  If this is set to 'arraybuffer' the request will\n   * be discrete, streaming is only supported for text encoded requests.\n   * @type {string}\n   */\n  this.responseType = '';\n\n  /**\n   * Document response entity body.\n   * NOTE: This is always null and not supported by this class.\n   * @final {null}\n   */\n  this.responseXML = null;\n\n  /**\n   * Method to call when the state changes.\n   * @type {?function()}\n   */\n  this.onreadystatechange = null;\n\n  /** @private {!Headers} */\n  this.requestHeaders_ = new Headers();\n\n  /** @private {?Headers} */\n  this.responseHeaders_ = null;\n\n  /**\n   * Request method (GET or POST).\n   * @private {string}\n   */\n  this.method_ = 'GET';\n\n  /**\n   * Request URL.\n   * @private {string}\n   */\n  this.url_ = '';\n\n  /**\n   * Whether the request is in progress.\n   * @private {boolean}\n   */\n  this.inProgress_ = false;\n\n  /** @private @final {?goog.log.Logger} */\n  this.logger_ = goog.log.getLogger('goog.net.FetchXmlHttp');\n\n  /** @private {?Response} */\n  this.fetchResponse_ = null;\n\n  /** @private {!ReadableStreamDefaultReader|null} */\n  this.currentReader_ = null;\n\n  /** @private {?TextDecoder} */\n  this.textDecoder_ = null;\n};\ngoog.inherits(goog.net.FetchXmlHttp, goog.events.EventTarget);\n\n\n/**\n * State of the requests.\n * @enum {number}\n */\ngoog.net.FetchXmlHttp.RequestState = {\n  UNSENT: 0,\n  OPENED: 1,\n  HEADER_RECEIVED: 2,\n  LOADING: 3,\n  DONE: 4,\n};\n\n\n/** @override */\ngoog.net.FetchXmlHttp.prototype.open = function(method, url, opt_async) {\n  goog.asserts.assert(!!opt_async, 'Only async requests are supported.');\n  if (this.readyState != goog.net.FetchXmlHttp.RequestState.UNSENT) {\n    this.abort();\n    throw new Error('Error reopening a connection');\n  }\n\n  this.method_ = method;\n  this.url_ = url;\n\n  this.readyState = goog.net.FetchXmlHttp.RequestState.OPENED;\n  this.dispatchCallback_();\n};\n\n\n/** @override */\ngoog.net.FetchXmlHttp.prototype.send = function(opt_data) {\n  if (this.readyState != goog.net.FetchXmlHttp.RequestState.OPENED) {\n    this.abort();\n    throw new Error('need to call open() first. ');\n  }\n\n  this.inProgress_ = true;\n  var requestInit = {\n    headers: this.requestHeaders_,\n    method: this.method_,\n    credentials: this.credentialsMode_,\n    cache: this.cacheMode_,\n  };\n  if (opt_data) {\n    requestInit['body'] = opt_data;\n  }\n  this.worker_\n      .fetch(new Request(this.url_, /** @type {!RequestInit} */ (requestInit)))\n      .then(\n          this.handleResponse_.bind(this), this.handleSendFailure_.bind(this));\n};\n\n\n/** @override */\ngoog.net.FetchXmlHttp.prototype.abort = function() {\n  this.response = this.responseText = '';\n  this.requestHeaders_ = new Headers();\n  this.status = 0;\n\n  if (!!this.currentReader_) {\n    this.currentReader_.cancel('Request was aborted.');\n  }\n\n  if (((this.readyState >= goog.net.FetchXmlHttp.RequestState.OPENED) &&\n       this.inProgress_) &&\n      (this.readyState != goog.net.FetchXmlHttp.RequestState.DONE)) {\n    this.inProgress_ = false;\n    this.requestDone_();\n  }\n\n  this.readyState = goog.net.FetchXmlHttp.RequestState.UNSENT;\n};\n\n\n/**\n * Handles the fetch response.\n * @param {!Response} response\n * @private\n */\ngoog.net.FetchXmlHttp.prototype.handleResponse_ = function(response) {\n  if (!this.inProgress_) {\n    // The request was aborted, ignore.\n    return;\n  }\n\n  this.fetchResponse_ = response;\n\n  if (!this.responseHeaders_) {\n    this.status = this.fetchResponse_.status;\n    this.statusText = this.fetchResponse_.statusText;\n    this.responseHeaders_ = response.headers;\n    this.readyState = goog.net.FetchXmlHttp.RequestState.HEADER_RECEIVED;\n    this.dispatchCallback_();\n  }\n  // A callback may abort the request.\n  if (!this.inProgress_) {\n    // The request was aborted, ignore.\n    return;\n  }\n\n  this.readyState = goog.net.FetchXmlHttp.RequestState.LOADING;\n  this.dispatchCallback_();\n  // A callback may abort the request.\n  if (!this.inProgress_) {\n    // The request was aborted, ignore.\n    return;\n  }\n\n  if (this.responseType === 'arraybuffer') {\n    response.arrayBuffer().then(\n        this.handleResponseArrayBuffer_.bind(this),\n        this.handleSendFailure_.bind(this));\n  } else if (\n      typeof (goog.global.ReadableStream) !== 'undefined' &&\n      'body' in response) {\n    this.response = this.responseText = '';\n    this.currentReader_ =\n        /** @type {!ReadableStreamDefaultReader} */ (response.body.getReader());\n    this.textDecoder_ = new TextDecoder();\n    this.readInputFromFetch_();\n  } else {\n    response.text().then(\n        this.handleResponseText_.bind(this),\n        this.handleSendFailure_.bind(this));\n  }\n};\n\n\n/**\n * Reads the next chunk of data from the fetch response.\n * @private\n */\ngoog.net.FetchXmlHttp.prototype.readInputFromFetch_ = function() {\n  this.currentReader_.read()\n      .then(this.handleDataFromStream_.bind(this))\n      .catch(this.handleSendFailure_.bind(this));\n};\n\n\n/**\n * Handles a chunk of data from the fetch response stream reader.\n * @param {!IIterableResult} result\n * @private\n */\ngoog.net.FetchXmlHttp.prototype.handleDataFromStream_ = function(result) {\n  if (!this.inProgress_) {\n    // The request was aborted, ignore.\n    return;\n  }\n\n  var dataPacket = result.value ? /** @type {!Uint8Array} */ (result.value) :\n                                  new Uint8Array(0);\n  var newText = this.textDecoder_.decode(dataPacket, {stream: !result.done});\n  if (newText) {\n    this.responseText += newText;\n    this.response = this.responseText;\n  }\n\n  if (result.done) {\n    this.requestDone_();\n  } else {\n    this.dispatchCallback_();\n  }\n\n  if (this.readyState == goog.net.FetchXmlHttp.RequestState.LOADING) {\n    this.readInputFromFetch_();\n  }\n};\n\n\n/**\n * Handles the response text.\n * @param {string} responseText\n * @private\n */\ngoog.net.FetchXmlHttp.prototype.handleResponseText_ = function(responseText) {\n  if (!this.inProgress_) {\n    // The request was aborted, ignore.\n    return;\n  }\n  this.response = this.responseText = responseText;\n  this.requestDone_();\n};\n\n\n/**\n * Handles the response text.\n * @param {!ArrayBuffer} responseArrayBuffer\n * @private\n */\ngoog.net.FetchXmlHttp.prototype.handleResponseArrayBuffer_ = function(\n    responseArrayBuffer) {\n  if (!this.inProgress_) {\n    // The request was aborted, ignore.\n    return;\n  }\n  this.response = responseArrayBuffer;\n  this.requestDone_();\n};\n\n\n/**\n * Handles the send failure.\n * @param {*} error\n * @private\n */\ngoog.net.FetchXmlHttp.prototype.handleSendFailure_ = function(error) {\n  var e = error instanceof Error ? error : Error(error);\n  goog.log.warning(this.logger_, 'Failed to fetch url ' + this.url_, e);\n  if (!this.inProgress_) {\n    // The request was aborted, ignore.\n    return;\n  }\n  this.requestDone_();\n};\n\n\n/**\n * Sets the request state to DONE and performs cleanup.\n * @private\n */\ngoog.net.FetchXmlHttp.prototype.requestDone_ = function() {\n  this.readyState = goog.net.FetchXmlHttp.RequestState.DONE;\n\n  this.fetchResponse_ = null;\n  this.currentReader_ = null;\n  this.textDecoder_ = null;\n\n  this.dispatchCallback_();\n};\n\n\n/** @override */\ngoog.net.FetchXmlHttp.prototype.setRequestHeader = function(header, value) {\n  this.requestHeaders_.append(header, value);\n};\n\n\n/** @override */\ngoog.net.FetchXmlHttp.prototype.getResponseHeader = function(header) {\n  // TODO(user): This method should return null when the headers are not\n  // present or the specified header is missing. The externs need to be fixed.\n  if (!this.responseHeaders_) {\n    goog.log.warning(\n        this.logger_,\n        'Attempting to get response header but no headers have been received ' +\n            'for url: ' + this.url_);\n    return '';\n  }\n  return this.responseHeaders_.get(header.toLowerCase()) || '';\n};\n\n\n/** @override */\ngoog.net.FetchXmlHttp.prototype.getAllResponseHeaders = function() {\n  if (!this.responseHeaders_) {\n    goog.log.warning(\n        this.logger_,\n        'Attempting to get all response headers but no headers have been ' +\n            'received for url: ' + this.url_);\n    return '';\n  }\n  var lines = [];\n  var iter = this.responseHeaders_.entries();\n  var entry = iter.next();\n  while (!entry.done) {\n    var pair = entry.value;\n    lines.push(pair[0] + ': ' + pair[1]);\n    entry = iter.next();\n  }\n  return lines.join('\\r\\n');\n};\n\n\n/**\n * @param {!RequestCredentials} credentialsMode The credentials mode of the\n *     Service Worker fetch.\n */\ngoog.net.FetchXmlHttp.prototype.setCredentialsMode = function(credentialsMode) {\n  this.credentialsMode_ = credentialsMode;\n};\n\n/**\n * @return {!RequestCredentials|undefined} The credentials mode of the\n *     Service Worker fetch.\n */\ngoog.net.FetchXmlHttp.prototype.getCredentialsMode = function() {\n  return this.credentialsMode_;\n};\n\n/**\n * @param {!RequestCache} cacheMode The cache mode of the Service Worker fetch.\n */\ngoog.net.FetchXmlHttp.prototype.setCacheMode = function(cacheMode) {\n  this.cacheMode_ = cacheMode;\n};\n\n\n/**\n * Dispatches the callback, if the callback attribute is defined.\n * @private\n */\ngoog.net.FetchXmlHttp.prototype.dispatchCallback_ = function() {\n  if (this.onreadystatechange) {\n    this.onreadystatechange.call(this);\n  }\n};\n\n// Polyfill XmlHttpRequest's withCredentials property for specifying whether to\n// include credentials on cross domain requests.\nObject.defineProperty(goog.net.FetchXmlHttp.prototype, 'withCredentials', {\n  get:\n      /**\n       * @this {goog.net.FetchXmlHttp}\n       * @return {boolean} Whether to include credentials in cross domain\n       *     requests.\n       */\n      function() {\n        return this.getCredentialsMode() === 'include';\n      },\n\n  set:\n      /**\n       * @param {boolean} value Whether to include credentials in cross domain\n       *     requests.\n       * @this {goog.net.FetchXmlHttp}\n       **/\n      function(value) {\n        this.setCredentialsMode(value ? 'include' : 'same-origin');\n      }\n});\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Wrapper class for handling XmlHttpRequests.\n *\n * One off requests can be sent through goog.net.XhrIo.send() or an\n * instance can be created to send multiple requests.  Each request uses its\n * own XmlHttpRequest object and handles clearing of the event callback to\n * ensure no leaks.\n *\n * XhrIo is event based, it dispatches events on success, failure, finishing,\n * ready-state change, or progress (download and upload).\n *\n * The ready-state or timeout event fires first, followed by\n * a generic completed event. Then the abort, error, or success event\n * is fired as appropriate. Progress events are fired as they are\n * received. Lastly, the ready event will fire to indicate that the\n * object may be used to make another request.\n *\n * The error event may also be called before completed and\n * ready-state-change if the XmlHttpRequest.open() or .send() methods throw.\n *\n * This class does not support multiple requests, queuing, or prioritization.\n *\n * When progress events are supported by the browser, and progress is\n * enabled via .setProgressEventsEnabled(true), the\n * goog.net.EventType.PROGRESS event will be the re-dispatched browser\n * progress event. Additionally, a DOWNLOAD_PROGRESS or UPLOAD_PROGRESS event\n * will be fired for download and upload progress respectively.\n */\n\n\ngoog.provide('goog.net.XhrIo');\ngoog.provide('goog.net.XhrIo.ResponseType');\n\ngoog.require('goog.Timer');\ngoog.require('goog.array');\ngoog.require('goog.asserts');\ngoog.require('goog.debug.entryPointRegistry');\ngoog.require('goog.events.EventTarget');\ngoog.require('goog.json.hybrid');\ngoog.require('goog.log');\ngoog.require('goog.net.ErrorCode');\ngoog.require('goog.net.EventType');\ngoog.require('goog.net.HttpStatus');\ngoog.require('goog.net.XmlHttp');\ngoog.require('goog.object');\ngoog.require('goog.string');\ngoog.require('goog.structs');\ngoog.require('goog.structs.Map');\ngoog.require('goog.uri.utils');\ngoog.require('goog.userAgent');\ngoog.requireType('goog.Uri');\ngoog.requireType('goog.debug.ErrorHandler');\ngoog.requireType('goog.net.XhrLike');\ngoog.requireType('goog.net.XmlHttpFactory');\n\ngoog.scope(function() {\n\n/**\n * Basic class for handling XMLHttpRequests.\n * @param {goog.net.XmlHttpFactory=} opt_xmlHttpFactory Factory to use when\n *     creating XMLHttpRequest objects.\n * @constructor\n * @extends {goog.events.EventTarget}\n */\ngoog.net.XhrIo = function(opt_xmlHttpFactory) {\n  XhrIo.base(this, 'constructor');\n\n  /**\n   * Map of default headers to add to every request, use:\n   * XhrIo.headers.set(name, value)\n   * @type {!goog.structs.Map}\n   */\n  this.headers = new goog.structs.Map();\n\n  /**\n   * Optional XmlHttpFactory\n   * @private {goog.net.XmlHttpFactory}\n   */\n  this.xmlHttpFactory_ = opt_xmlHttpFactory || null;\n\n  /**\n   * Whether XMLHttpRequest is active.  A request is active from the time send()\n   * is called until onReadyStateChange() is complete, or error() or abort()\n   * is called.\n   * @private {boolean}\n   */\n  this.active_ = false;\n\n  /**\n   * The XMLHttpRequest object that is being used for the transfer.\n   * @private {?goog.net.XhrLike.OrNative}\n   */\n  this.xhr_ = null;\n\n  /**\n   * The options to use with the current XMLHttpRequest object.\n   * @private {?Object}\n   */\n  this.xhrOptions_ = null;\n\n  /**\n   * Last URL that was requested.\n   * @private {string|goog.Uri}\n   */\n  this.lastUri_ = '';\n\n  /**\n   * Method for the last request.\n   * @private {string}\n   */\n  this.lastMethod_ = '';\n\n  /**\n   * Last error code.\n   * @private {!goog.net.ErrorCode}\n   */\n  this.lastErrorCode_ = goog.net.ErrorCode.NO_ERROR;\n\n  /**\n   * Last error message.\n   * @private {Error|string}\n   */\n  this.lastError_ = '';\n\n  /**\n   * Used to ensure that we don't dispatch an multiple ERROR events. This can\n   * happen in IE when it does a synchronous load and one error is handled in\n   * the ready state change and one is handled due to send() throwing an\n   * exception.\n   * @private {boolean}\n   */\n  this.errorDispatched_ = false;\n\n  /**\n   * Used to make sure we don't fire the complete event from inside a send call.\n   * @private {boolean}\n   */\n  this.inSend_ = false;\n\n  /**\n   * Used in determining if a call to {@link #onReadyStateChange_} is from\n   * within a call to this.xhr_.open.\n   * @private {boolean}\n   */\n  this.inOpen_ = false;\n\n  /**\n   * Used in determining if a call to {@link #onReadyStateChange_} is from\n   * within a call to this.xhr_.abort.\n   * @private {boolean}\n   */\n  this.inAbort_ = false;\n\n  /**\n   * Number of milliseconds after which an incomplete request will be aborted\n   * and a {@link goog.net.EventType.TIMEOUT} event raised; 0 means no timeout\n   * is set.\n   * @private {number}\n   */\n  this.timeoutInterval_ = 0;\n\n  /**\n   * Timer to track request timeout.\n   * @private {?number}\n   */\n  this.timeoutId_ = null;\n\n  /**\n   * The requested type for the response. The empty string means use the default\n   * XHR behavior.\n   * @private {goog.net.XhrIo.ResponseType}\n   */\n  this.responseType_ = ResponseType.DEFAULT;\n\n  /**\n   * Whether a \"credentialed\" request is to be sent (one that is aware of\n   * cookies and authentication). This is applicable only for cross-domain\n   * requests and more recent browsers that support this part of the HTTP Access\n   * Control standard.\n   *\n   * @see http://www.w3.org/TR/XMLHttpRequest/#the-withcredentials-attribute\n   *\n   * @private {boolean}\n   */\n  this.withCredentials_ = false;\n\n  /**\n   * Whether progress events are enabled for this request. This is\n   * disabled by default because setting a progress event handler\n   * causes pre-flight OPTIONS requests to be sent for CORS requests,\n   * even in cases where a pre-flight request would not otherwise be\n   * sent.\n   *\n   * @see http://xhr.spec.whatwg.org/#security-considerations\n   *\n   * Note that this can cause problems for Firefox 22 and below, as an\n   * older \"LSProgressEvent\" will be dispatched by the browser. That\n   * progress event is no longer supported, and can lead to failures,\n   * including throwing exceptions.\n   *\n   * @see http://bugzilla.mozilla.org/show_bug.cgi?id=845631\n   * @see b/23469793\n   *\n   * @private {boolean}\n   */\n  this.progressEventsEnabled_ = false;\n\n  /**\n   * True if we can use XMLHttpRequest's timeout directly.\n   * @private {boolean}\n   */\n  this.useXhr2Timeout_ = false;\n};\ngoog.inherits(goog.net.XhrIo, goog.events.EventTarget);\n\nvar XhrIo = goog.net.XhrIo;\n\n/**\n * Response types that may be requested for XMLHttpRequests.\n * @enum {string}\n * @see http://www.w3.org/TR/XMLHttpRequest/#the-responsetype-attribute\n */\ngoog.net.XhrIo.ResponseType = {\n  DEFAULT: '',\n  TEXT: 'text',\n  DOCUMENT: 'document',\n  // Not supported as of Chrome 10.0.612.1 dev\n  BLOB: 'blob',\n  ARRAY_BUFFER: 'arraybuffer',\n};\n\nvar ResponseType = goog.net.XhrIo.ResponseType;\n\n\n/**\n * A reference to the XhrIo logger\n * @private {?goog.log.Logger}\n * @const\n */\ngoog.net.XhrIo.prototype.logger_ = goog.log.getLogger('goog.net.XhrIo');\n\n\n/**\n * The Content-Type HTTP header name\n * @type {string}\n */\ngoog.net.XhrIo.CONTENT_TYPE_HEADER = 'Content-Type';\n\n\n/**\n * The Content-Transfer-Encoding HTTP header name\n * @type {string}\n */\ngoog.net.XhrIo.CONTENT_TRANSFER_ENCODING = 'Content-Transfer-Encoding';\n\n\n/**\n * The pattern matching the 'http' and 'https' URI schemes\n * @type {!RegExp}\n */\ngoog.net.XhrIo.HTTP_SCHEME_PATTERN = /^https?$/i;\n\n\n/**\n * The methods that typically come along with form data.  We set different\n * headers depending on whether the HTTP action is one of these.\n * @type {!Array<string>}\n */\ngoog.net.XhrIo.METHODS_WITH_FORM_DATA = ['POST', 'PUT'];\n\n\n/**\n * The Content-Type HTTP header value for a url-encoded form\n * @type {string}\n */\ngoog.net.XhrIo.FORM_CONTENT_TYPE =\n    'application/x-www-form-urlencoded;charset=utf-8';\n\n\n/**\n * The XMLHttpRequest Level two timeout delay ms property name.\n *\n * @see http://www.w3.org/TR/XMLHttpRequest/#the-timeout-attribute\n *\n * @private {string}\n * @const\n */\ngoog.net.XhrIo.XHR2_TIMEOUT_ = 'timeout';\n\n\n/**\n * The XMLHttpRequest Level two ontimeout handler property name.\n *\n * @see http://www.w3.org/TR/XMLHttpRequest/#the-timeout-attribute\n *\n * @private {string}\n * @const\n */\ngoog.net.XhrIo.XHR2_ON_TIMEOUT_ = 'ontimeout';\n\n\n/**\n * All non-disposed instances of goog.net.XhrIo created\n * by {@link goog.net.XhrIo.send} are in this Array.\n * @see goog.net.XhrIo.cleanup\n * @private {!Array<!goog.net.XhrIo>}\n */\ngoog.net.XhrIo.sendInstances_ = [];\n\n\n/**\n * Static send that creates a short lived instance of XhrIo to send the\n * request.\n * @see goog.net.XhrIo.cleanup\n * @param {string|goog.Uri} url Uri to make request to.\n * @param {?function(this:goog.net.XhrIo, ?)=} opt_callback Callback function\n *     for when request is complete.\n * @param {string=} opt_method Send method, default: GET.\n * @param {ArrayBuffer|ArrayBufferView|Blob|Document|FormData|string=}\n *     opt_content Body data.\n * @param {Object|goog.structs.Map=} opt_headers Map of headers to add to the\n *     request.\n * @param {number=} opt_timeoutInterval Number of milliseconds after which an\n *     incomplete request will be aborted; 0 means no timeout is set.\n * @param {boolean=} opt_withCredentials Whether to send credentials with the\n *     request. Default to false. See {@link goog.net.XhrIo#setWithCredentials}.\n * @return {!goog.net.XhrIo} The sent XhrIo.\n */\ngoog.net.XhrIo.send = function(\n    url, opt_callback, opt_method, opt_content, opt_headers,\n    opt_timeoutInterval, opt_withCredentials) {\n  var x = new goog.net.XhrIo();\n  goog.net.XhrIo.sendInstances_.push(x);\n  if (opt_callback) {\n    x.listen(goog.net.EventType.COMPLETE, opt_callback);\n  }\n  x.listenOnce(goog.net.EventType.READY, x.cleanupSend_);\n  if (opt_timeoutInterval) {\n    x.setTimeoutInterval(opt_timeoutInterval);\n  }\n  if (opt_withCredentials) {\n    x.setWithCredentials(opt_withCredentials);\n  }\n  x.send(url, opt_method, opt_content, opt_headers);\n  return x;\n};\n\n\n/**\n * Disposes all non-disposed instances of goog.net.XhrIo created by\n * {@link goog.net.XhrIo.send}.\n * {@link goog.net.XhrIo.send} cleans up the goog.net.XhrIo instance\n * it creates when the request completes or fails.  However, if\n * the request never completes, then the goog.net.XhrIo is not disposed.\n * This can occur if the window is unloaded before the request completes.\n * We could have {@link goog.net.XhrIo.send} return the goog.net.XhrIo\n * it creates and make the client of {@link goog.net.XhrIo.send} be\n * responsible for disposing it in this case.  However, this makes things\n * significantly more complicated for the client, and the whole point\n * of {@link goog.net.XhrIo.send} is that it's simple and easy to use.\n * Clients of {@link goog.net.XhrIo.send} should call\n * {@link goog.net.XhrIo.cleanup} when doing final\n * cleanup on window unload.\n */\ngoog.net.XhrIo.cleanup = function() {\n  var instances = goog.net.XhrIo.sendInstances_;\n  while (instances.length) {\n    instances.pop().dispose();\n  }\n};\n\n\n/**\n * Installs exception protection for all entry point introduced by\n * goog.net.XhrIo instances which are not protected by\n * {@link goog.debug.ErrorHandler#protectWindowSetTimeout},\n * {@link goog.debug.ErrorHandler#protectWindowSetInterval}, or\n * {@link goog.events.protectBrowserEventEntryPoint}.\n *\n * @param {goog.debug.ErrorHandler} errorHandler Error handler with which to\n *     protect the entry point(s).\n */\ngoog.net.XhrIo.protectEntryPoints = function(errorHandler) {\n  goog.net.XhrIo.prototype.onReadyStateChangeEntryPoint_ =\n      errorHandler.protectEntryPoint(\n          goog.net.XhrIo.prototype.onReadyStateChangeEntryPoint_);\n};\n\n\n/**\n * Disposes of the specified goog.net.XhrIo created by\n * {@link goog.net.XhrIo.send} and removes it from\n * {@link goog.net.XhrIo.pendingStaticSendInstances_}.\n * @private\n */\ngoog.net.XhrIo.prototype.cleanupSend_ = function() {\n  this.dispose();\n  goog.array.remove(goog.net.XhrIo.sendInstances_, this);\n};\n\n\n/**\n * Returns the number of milliseconds after which an incomplete request will be\n * aborted, or 0 if no timeout is set.\n * @return {number} Timeout interval in milliseconds.\n */\ngoog.net.XhrIo.prototype.getTimeoutInterval = function() {\n  return this.timeoutInterval_;\n};\n\n\n/**\n * Sets the number of milliseconds after which an incomplete request will be\n * aborted and a {@link goog.net.EventType.TIMEOUT} event raised; 0 means no\n * timeout is set.\n * @param {number} ms Timeout interval in milliseconds; 0 means none.\n */\ngoog.net.XhrIo.prototype.setTimeoutInterval = function(ms) {\n  this.timeoutInterval_ = Math.max(0, ms);\n};\n\n\n/**\n * Sets the desired type for the response. At time of writing, this is only\n * supported in very recent versions of WebKit (10.0.612.1 dev and later).\n *\n * If this is used, the response may only be accessed via {@link #getResponse}.\n *\n * @param {goog.net.XhrIo.ResponseType} type The desired type for the response.\n */\ngoog.net.XhrIo.prototype.setResponseType = function(type) {\n  this.responseType_ = type;\n};\n\n\n/**\n * Gets the desired type for the response.\n * @return {goog.net.XhrIo.ResponseType} The desired type for the response.\n */\ngoog.net.XhrIo.prototype.getResponseType = function() {\n  return this.responseType_;\n};\n\n\n/**\n * Sets whether a \"credentialed\" request that is aware of cookie and\n * authentication information should be made. This option is only supported by\n * browsers that support HTTP Access Control. As of this writing, this option\n * is not supported in IE.\n *\n * @param {boolean} withCredentials Whether this should be a \"credentialed\"\n *     request.\n */\ngoog.net.XhrIo.prototype.setWithCredentials = function(withCredentials) {\n  this.withCredentials_ = withCredentials;\n};\n\n\n/**\n * Gets whether a \"credentialed\" request is to be sent.\n * @return {boolean} The desired type for the response.\n */\ngoog.net.XhrIo.prototype.getWithCredentials = function() {\n  return this.withCredentials_;\n};\n\n\n/**\n * Sets whether progress events are enabled for this request. Note\n * that progress events require pre-flight OPTIONS request handling\n * for CORS requests, and may cause trouble with older browsers. See\n * progressEventsEnabled_ for details.\n * @param {boolean} enabled Whether progress events should be enabled.\n */\ngoog.net.XhrIo.prototype.setProgressEventsEnabled = function(enabled) {\n  this.progressEventsEnabled_ = enabled;\n};\n\n\n/**\n * Gets whether progress events are enabled.\n * @return {boolean} Whether progress events are enabled for this request.\n */\ngoog.net.XhrIo.prototype.getProgressEventsEnabled = function() {\n  return this.progressEventsEnabled_;\n};\n\n\n/**\n * Instance send that actually uses XMLHttpRequest to make a server call.\n * @param {string|goog.Uri} url Uri to make request to.\n * @param {string=} opt_method Send method, default: GET.\n * @param {ArrayBuffer|ArrayBufferView|Blob|Document|FormData|string=}\n *     opt_content Body data.\n * @param {Object|goog.structs.Map=} opt_headers Map of headers to add to the\n *     request.\n * @suppress {deprecated} Use deprecated goog.structs.forEach to allow different\n * types of parameters for opt_headers.\n */\ngoog.net.XhrIo.prototype.send = function(\n    url, opt_method, opt_content, opt_headers) {\n  if (this.xhr_) {\n    throw new Error(\n        '[goog.net.XhrIo] Object is active with another request=' +\n        this.lastUri_ + '; newUri=' + url);\n  }\n\n  var method = opt_method ? opt_method.toUpperCase() : 'GET';\n\n  this.lastUri_ = url;\n  this.lastError_ = '';\n  this.lastErrorCode_ = goog.net.ErrorCode.NO_ERROR;\n  this.lastMethod_ = method;\n  this.errorDispatched_ = false;\n  this.active_ = true;\n\n  // Use the factory to create the XHR object and options\n  this.xhr_ = this.createXhr();\n  this.xhrOptions_ = this.xmlHttpFactory_ ? this.xmlHttpFactory_.getOptions() :\n                                            goog.net.XmlHttp.getOptions();\n\n  // Set up the onreadystatechange callback\n  this.xhr_.onreadystatechange = goog.bind(this.onReadyStateChange_, this);\n\n  // Set up upload/download progress events, if progress events are supported.\n  if (this.getProgressEventsEnabled() && 'onprogress' in this.xhr_) {\n    this.xhr_.onprogress =\n        goog.bind(function(e) { this.onProgressHandler_(e, true); }, this);\n    if (this.xhr_.upload) {\n      this.xhr_.upload.onprogress = goog.bind(this.onProgressHandler_, this);\n    }\n  }\n\n  /**\n   * Try to open the XMLHttpRequest (always async), if an error occurs here it\n   * is generally permission denied\n   */\n  try {\n    goog.log.fine(this.logger_, this.formatMsg_('Opening Xhr'));\n    this.inOpen_ = true;\n    this.xhr_.open(method, String(url), true);  // Always async!\n    this.inOpen_ = false;\n  } catch (err) {\n    goog.log.fine(\n        this.logger_, this.formatMsg_('Error opening Xhr: ' + err.message));\n    this.error_(goog.net.ErrorCode.EXCEPTION, err);\n    return;\n  }\n\n  // We can't use null since this won't allow requests with form data to have a\n  // content length specified which will cause some proxies to return a 411\n  // error.\n  var content = opt_content || '';\n\n  var headers = this.headers.clone();\n\n  // Add headers specific to this request\n  if (opt_headers) {\n    goog.structs.forEach(\n        opt_headers, function(value, key) { headers.set(key, value); });\n  }\n\n  // Find whether a content type header is set, ignoring case.\n  // HTTP header names are case-insensitive.  See:\n  // http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2\n  var contentTypeKey =\n      goog.array.find(headers.getKeys(), goog.net.XhrIo.isContentTypeHeader_);\n\n  var contentIsFormData =\n      (goog.global['FormData'] && (content instanceof goog.global['FormData']));\n  if (goog.array.contains(goog.net.XhrIo.METHODS_WITH_FORM_DATA, method) &&\n      !contentTypeKey && !contentIsFormData) {\n    // For requests typically with form data, default to the url-encoded form\n    // content type unless this is a FormData request.  For FormData,\n    // the browser will automatically add a multipart/form-data content type\n    // with an appropriate multipart boundary.\n    headers.set(\n        goog.net.XhrIo.CONTENT_TYPE_HEADER, goog.net.XhrIo.FORM_CONTENT_TYPE);\n  }\n\n  // Add the headers to the Xhr object\n  headers.forEach(function(value, key) {\n    this.xhr_.setRequestHeader(key, value);\n  }, this);\n\n  if (this.responseType_) {\n    this.xhr_.responseType = this.responseType_;\n  }\n  // Set xhr_.withCredentials only when the value is different, or else in\n  // synchronous XMLHtppRequest.open Firefox will throw an exception.\n  // https://bugzilla.mozilla.org/show_bug.cgi?id=736340\n  if ('withCredentials' in this.xhr_ &&\n      this.xhr_.withCredentials !== this.withCredentials_) {\n    this.xhr_.withCredentials = this.withCredentials_;\n  }\n\n  /**\n   * Try to send the request, or other wise report an error (404 not found).\n   */\n  try {\n    this.cleanUpTimeoutTimer_();  // Paranoid, should never be running.\n    if (this.timeoutInterval_ > 0) {\n      this.useXhr2Timeout_ = goog.net.XhrIo.shouldUseXhr2Timeout_(this.xhr_);\n      goog.log.fine(\n          this.logger_, this.formatMsg_(\n                            'Will abort after ' + this.timeoutInterval_ +\n                            'ms if incomplete, xhr2 ' + this.useXhr2Timeout_));\n      if (this.useXhr2Timeout_) {\n        this.xhr_[goog.net.XhrIo.XHR2_TIMEOUT_] = this.timeoutInterval_;\n        this.xhr_[goog.net.XhrIo.XHR2_ON_TIMEOUT_] =\n            goog.bind(this.timeout_, this);\n      } else {\n        this.timeoutId_ =\n            goog.Timer.callOnce(this.timeout_, this.timeoutInterval_, this);\n      }\n    }\n    goog.log.fine(this.logger_, this.formatMsg_('Sending request'));\n    this.inSend_ = true;\n    this.xhr_.send(content);\n    this.inSend_ = false;\n\n  } catch (err) {\n    goog.log.fine(this.logger_, this.formatMsg_('Send error: ' + err.message));\n    this.error_(goog.net.ErrorCode.EXCEPTION, err);\n  }\n};\n\n\n/**\n * Determines if the argument is an XMLHttpRequest that supports the level 2\n * timeout value and event.\n *\n * Currently, FF 21.0 OS X has the fields but won't actually call the timeout\n * handler.  Perhaps the confusion in the bug referenced below hasn't\n * entirely been resolved.\n *\n * @see http://www.w3.org/TR/XMLHttpRequest/#the-timeout-attribute\n * @see https://bugzilla.mozilla.org/show_bug.cgi?id=525816\n *\n * @param {!goog.net.XhrLike.OrNative} xhr The request.\n * @return {boolean} True if the request supports level 2 timeout.\n * @private\n */\ngoog.net.XhrIo.shouldUseXhr2Timeout_ = function(xhr) {\n  return goog.userAgent.IE && goog.userAgent.isVersionOrHigher(9) &&\n      typeof xhr[goog.net.XhrIo.XHR2_TIMEOUT_] === 'number' &&\n      xhr[goog.net.XhrIo.XHR2_ON_TIMEOUT_] !== undefined;\n};\n\n\n/**\n * @param {string} header An HTTP header key.\n * @return {boolean} Whether the key is a content type header (ignoring\n *     case.\n * @private\n */\ngoog.net.XhrIo.isContentTypeHeader_ = function(header) {\n  return goog.string.caseInsensitiveEquals(\n      goog.net.XhrIo.CONTENT_TYPE_HEADER, header);\n};\n\n\n/**\n * Creates a new XHR object.\n * @return {!goog.net.XhrLike.OrNative} The newly created XHR object.\n * @protected\n */\ngoog.net.XhrIo.prototype.createXhr = function() {\n  return this.xmlHttpFactory_ ? this.xmlHttpFactory_.createInstance() :\n                                goog.net.XmlHttp();\n};\n\n\n/**\n * The request didn't complete after {@link goog.net.XhrIo#timeoutInterval_}\n * milliseconds; raises a {@link goog.net.EventType.TIMEOUT} event and aborts\n * the request.\n * @private\n */\ngoog.net.XhrIo.prototype.timeout_ = function() {\n  if (typeof goog == 'undefined') {\n    // If goog is undefined then the callback has occurred as the application\n    // is unloading and will error.  Thus we let it silently fail.\n  } else if (this.xhr_) {\n    this.lastError_ =\n        'Timed out after ' + this.timeoutInterval_ + 'ms, aborting';\n    this.lastErrorCode_ = goog.net.ErrorCode.TIMEOUT;\n    goog.log.fine(this.logger_, this.formatMsg_(this.lastError_));\n    this.dispatchEvent(goog.net.EventType.TIMEOUT);\n    this.abort(goog.net.ErrorCode.TIMEOUT);\n  }\n};\n\n\n/**\n * Something errorred, so inactivate, fire error callback and clean up\n * @param {goog.net.ErrorCode} errorCode The error code.\n * @param {Error} err The error object.\n * @private\n */\ngoog.net.XhrIo.prototype.error_ = function(errorCode, err) {\n  this.active_ = false;\n  if (this.xhr_) {\n    this.inAbort_ = true;\n    this.xhr_.abort();  // Ensures XHR isn't hung (FF)\n    this.inAbort_ = false;\n  }\n  this.lastError_ = err;\n  this.lastErrorCode_ = errorCode;\n  this.dispatchErrors_();\n  this.cleanUpXhr_();\n};\n\n\n/**\n * Dispatches COMPLETE and ERROR in case of an error. This ensures that we do\n * not dispatch multiple error events.\n * @private\n */\ngoog.net.XhrIo.prototype.dispatchErrors_ = function() {\n  if (!this.errorDispatched_) {\n    this.errorDispatched_ = true;\n    this.dispatchEvent(goog.net.EventType.COMPLETE);\n    this.dispatchEvent(goog.net.EventType.ERROR);\n  }\n};\n\n\n/**\n * Abort the current XMLHttpRequest\n * @param {goog.net.ErrorCode=} opt_failureCode Optional error code to use -\n *     defaults to ABORT.\n */\ngoog.net.XhrIo.prototype.abort = function(opt_failureCode) {\n  if (this.xhr_ && this.active_) {\n    goog.log.fine(this.logger_, this.formatMsg_('Aborting'));\n    this.active_ = false;\n    this.inAbort_ = true;\n    this.xhr_.abort();\n    this.inAbort_ = false;\n    this.lastErrorCode_ = opt_failureCode || goog.net.ErrorCode.ABORT;\n    this.dispatchEvent(goog.net.EventType.COMPLETE);\n    this.dispatchEvent(goog.net.EventType.ABORT);\n    this.cleanUpXhr_();\n  }\n};\n\n\n/**\n * Nullifies all callbacks to reduce risks of leaks.\n * @override\n * @protected\n */\ngoog.net.XhrIo.prototype.disposeInternal = function() {\n  if (this.xhr_) {\n    // We explicitly do not call xhr_.abort() unless active_ is still true.\n    // This is to avoid unnecessarily aborting a successful request when\n    // dispose() is called in a callback triggered by a complete response, but\n    // in which browser cleanup has not yet finished.\n    // (See http://b/issue?id=1684217.)\n    if (this.active_) {\n      this.active_ = false;\n      this.inAbort_ = true;\n      this.xhr_.abort();\n      this.inAbort_ = false;\n    }\n    this.cleanUpXhr_(true);\n  }\n\n  XhrIo.base(this, 'disposeInternal');\n};\n\n\n/**\n * Internal handler for the XHR object's readystatechange event.  This method\n * checks the status and the readystate and fires the correct callbacks.\n * If the request has ended, the handlers are cleaned up and the XHR object is\n * nullified.\n * @private\n */\ngoog.net.XhrIo.prototype.onReadyStateChange_ = function() {\n  if (this.isDisposed()) {\n    // This method is the target of an untracked goog.Timer.callOnce().\n    return;\n  }\n  if (!this.inOpen_ && !this.inSend_ && !this.inAbort_) {\n    // Were not being called from within a call to this.xhr_.send\n    // this.xhr_.abort, or this.xhr_.open, so this is an entry point\n    this.onReadyStateChangeEntryPoint_();\n  } else {\n    this.onReadyStateChangeHelper_();\n  }\n};\n\n\n/**\n * Used to protect the onreadystatechange handler entry point.  Necessary\n * as {#onReadyStateChange_} maybe called from within send or abort, this\n * method is only called when {#onReadyStateChange_} is called as an\n * entry point.\n * {@see #protectEntryPoints}\n * @private\n */\ngoog.net.XhrIo.prototype.onReadyStateChangeEntryPoint_ = function() {\n  this.onReadyStateChangeHelper_();\n};\n\n\n/**\n * Helper for {@link #onReadyStateChange_}.  This is used so that\n * entry point calls to {@link #onReadyStateChange_} can be routed through\n * {@link #onReadyStateChangeEntryPoint_}.\n * @private\n */\ngoog.net.XhrIo.prototype.onReadyStateChangeHelper_ = function() {\n  if (!this.active_) {\n    // can get called inside abort call\n    return;\n  }\n\n  if (typeof goog == 'undefined') {\n    // NOTE(user): If goog is undefined then the callback has occurred as the\n    // application is unloading and will error.  Thus we let it silently fail.\n\n  } else if (\n      this.xhrOptions_[goog.net.XmlHttp.OptionType.LOCAL_REQUEST_ERROR] &&\n      this.getReadyState() == goog.net.XmlHttp.ReadyState.COMPLETE &&\n      this.getStatus() == 2) {\n    // NOTE(user): In IE if send() errors on a *local* request the readystate\n    // is still changed to COMPLETE.  We need to ignore it and allow the\n    // try/catch around send() to pick up the error.\n    goog.log.fine(\n        this.logger_,\n        this.formatMsg_('Local request error detected and ignored'));\n\n  } else {\n    // In IE when the response has been cached we sometimes get the callback\n    // from inside the send call and this usually breaks code that assumes that\n    // XhrIo is asynchronous.  If that is the case we delay the callback\n    // using a timer.\n    if (this.inSend_ &&\n        this.getReadyState() == goog.net.XmlHttp.ReadyState.COMPLETE) {\n      goog.Timer.callOnce(this.onReadyStateChange_, 0, this);\n      return;\n    }\n\n    this.dispatchEvent(goog.net.EventType.READY_STATE_CHANGE);\n\n    // readyState indicates the transfer has finished\n    if (this.isComplete()) {\n      goog.log.fine(this.logger_, this.formatMsg_('Request complete'));\n\n      this.active_ = false;\n\n      try {\n        // Call the specific callbacks for success or failure. Only call the\n        // success if the status is 200 (HTTP_OK) or 304 (HTTP_CACHED)\n        if (this.isSuccess()) {\n          this.dispatchEvent(goog.net.EventType.COMPLETE);\n          this.dispatchEvent(goog.net.EventType.SUCCESS);\n        } else {\n          this.lastErrorCode_ = goog.net.ErrorCode.HTTP_ERROR;\n          this.lastError_ =\n              this.getStatusText() + ' [' + this.getStatus() + ']';\n          this.dispatchErrors_();\n        }\n      } finally {\n        this.cleanUpXhr_();\n      }\n    }\n  }\n};\n\n\n/**\n * Internal handler for the XHR object's onprogress event. Fires both a generic\n * PROGRESS event and either a DOWNLOAD_PROGRESS or UPLOAD_PROGRESS event to\n * allow specific binding for each XHR progress event.\n * @param {!ProgressEvent} e XHR progress event.\n * @param {boolean=} opt_isDownload Whether the current progress event is from a\n *     download. Used to determine whether DOWNLOAD_PROGRESS or UPLOAD_PROGRESS\n *     event should be dispatched.\n * @private\n */\ngoog.net.XhrIo.prototype.onProgressHandler_ = function(e, opt_isDownload) {\n  goog.asserts.assert(\n      e.type === goog.net.EventType.PROGRESS,\n      'goog.net.EventType.PROGRESS is of the same type as raw XHR progress.');\n  this.dispatchEvent(\n      goog.net.XhrIo.buildProgressEvent_(e, goog.net.EventType.PROGRESS));\n  this.dispatchEvent(\n      goog.net.XhrIo.buildProgressEvent_(\n          e, opt_isDownload ? goog.net.EventType.DOWNLOAD_PROGRESS :\n                              goog.net.EventType.UPLOAD_PROGRESS));\n};\n\n\n/**\n * Creates a representation of the native ProgressEvent. IE doesn't support\n * constructing ProgressEvent via \"new\", and the alternatives (e.g.,\n * ProgressEvent.initProgressEvent) are non-standard or deprecated.\n * @param {!ProgressEvent} e XHR progress event.\n * @param {!goog.net.EventType} eventType The type of the event.\n * @return {!ProgressEvent} The progress event.\n * @private\n */\ngoog.net.XhrIo.buildProgressEvent_ = function(e, eventType) {\n  return /** @type {!ProgressEvent} */ ({\n    type: eventType,\n    lengthComputable: e.lengthComputable,\n    loaded: e.loaded,\n    total: e.total,\n  });\n};\n\n\n/**\n * Remove the listener to protect against leaks, and nullify the XMLHttpRequest\n * object.\n * @param {boolean=} opt_fromDispose If this is from the dispose (don't want to\n *     fire any events).\n * @private\n */\ngoog.net.XhrIo.prototype.cleanUpXhr_ = function(opt_fromDispose) {\n  if (this.xhr_) {\n    // Cancel any pending timeout event handler.\n    this.cleanUpTimeoutTimer_();\n\n    // Save reference so we can mark it as closed after the READY event.  The\n    // READY event may trigger another request, thus we must nullify this.xhr_\n    var xhr = this.xhr_;\n    var clearedOnReadyStateChange =\n        this.xhrOptions_[goog.net.XmlHttp.OptionType.USE_NULL_FUNCTION] ?\n        goog.nullFunction :\n        null;\n    this.xhr_ = null;\n    this.xhrOptions_ = null;\n\n    if (!opt_fromDispose) {\n      this.dispatchEvent(goog.net.EventType.READY);\n    }\n\n    try {\n      // NOTE(user): Not nullifying in FireFox can still leak if the callbacks\n      // are defined in the same scope as the instance of XhrIo. But, IE doesn't\n      // allow you to set the onreadystatechange to NULL so nullFunction is\n      // used.\n      xhr.onreadystatechange = clearedOnReadyStateChange;\n    } catch (e) {\n      // This seems to occur with a Gears HTTP request. Delayed the setting of\n      // this onreadystatechange until after READY is sent out and catching the\n      // error to see if we can track down the problem.\n      goog.log.error(\n          this.logger_,\n          'Problem encountered resetting onreadystatechange: ' + e.message);\n    }\n  }\n};\n\n\n/**\n * Make sure the timeout timer isn't running.\n * @private\n */\ngoog.net.XhrIo.prototype.cleanUpTimeoutTimer_ = function() {\n  if (this.xhr_ && this.useXhr2Timeout_) {\n    this.xhr_[goog.net.XhrIo.XHR2_ON_TIMEOUT_] = null;\n  }\n  if (this.timeoutId_) {\n    goog.Timer.clear(this.timeoutId_);\n    this.timeoutId_ = null;\n  }\n};\n\n\n/**\n * @return {boolean} Whether there is an active request.\n */\ngoog.net.XhrIo.prototype.isActive = function() {\n  return !!this.xhr_;\n};\n\n\n/**\n * @return {boolean} Whether the request has completed.\n */\ngoog.net.XhrIo.prototype.isComplete = function() {\n  return this.getReadyState() == goog.net.XmlHttp.ReadyState.COMPLETE;\n};\n\n\n/**\n * @return {boolean} Whether the request completed with a success.\n */\ngoog.net.XhrIo.prototype.isSuccess = function() {\n  var status = this.getStatus();\n  // A zero status code is considered successful for local files.\n  return goog.net.HttpStatus.isSuccess(status) ||\n      status === 0 && !this.isLastUriEffectiveSchemeHttp_();\n};\n\n\n/**\n * @return {boolean} whether the effective scheme of the last URI that was\n *     fetched was 'http' or 'https'.\n * @private\n */\ngoog.net.XhrIo.prototype.isLastUriEffectiveSchemeHttp_ = function() {\n  var scheme = goog.uri.utils.getEffectiveScheme(String(this.lastUri_));\n  return goog.net.XhrIo.HTTP_SCHEME_PATTERN.test(scheme);\n};\n\n\n/**\n * Get the readystate from the Xhr object\n * Will only return correct result when called from the context of a callback\n * @return {goog.net.XmlHttp.ReadyState} goog.net.XmlHttp.ReadyState.*.\n */\ngoog.net.XhrIo.prototype.getReadyState = function() {\n  return this.xhr_ ?\n      /** @type {goog.net.XmlHttp.ReadyState} */ (this.xhr_.readyState) :\n                                                 goog.net.XmlHttp.ReadyState\n                                                     .UNINITIALIZED;\n};\n\n\n/**\n * Get the status from the Xhr object\n * Will only return correct result when called from the context of a callback\n * @return {number} Http status.\n */\ngoog.net.XhrIo.prototype.getStatus = function() {\n  /**\n   * IE doesn't like you checking status until the readystate is greater than 2\n   * (i.e. it is receiving or complete).  The try/catch is used for when the\n   * page is unloading and an ERROR_NOT_AVAILABLE may occur when accessing xhr_.\n   */\n  try {\n    return this.getReadyState() > goog.net.XmlHttp.ReadyState.LOADED ?\n        this.xhr_.status :\n        -1;\n  } catch (e) {\n    return -1;\n  }\n};\n\n\n/**\n * Get the status text from the Xhr object\n * Will only return correct result when called from the context of a callback\n * @return {string} Status text.\n */\ngoog.net.XhrIo.prototype.getStatusText = function() {\n  /**\n   * IE doesn't like you checking status until the readystate is greater than 2\n   * (i.e. it is receiving or complete).  The try/catch is used for when the\n   * page is unloading and an ERROR_NOT_AVAILABLE may occur when accessing xhr_.\n   */\n  try {\n    return this.getReadyState() > goog.net.XmlHttp.ReadyState.LOADED ?\n        this.xhr_.statusText :\n        '';\n  } catch (e) {\n    goog.log.fine(this.logger_, 'Can not get status: ' + e.message);\n    return '';\n  }\n};\n\n\n/**\n * Get the last Uri that was requested\n * @return {string} Last Uri.\n */\ngoog.net.XhrIo.prototype.getLastUri = function() {\n  return String(this.lastUri_);\n};\n\n\n/**\n * Get the response text from the Xhr object\n * Will only return correct result when called from the context of a callback.\n * @return {string} Result from the server, or '' if no result available.\n */\ngoog.net.XhrIo.prototype.getResponseText = function() {\n  try {\n    return this.xhr_ ? this.xhr_.responseText : '';\n  } catch (e) {\n    // http://www.w3.org/TR/XMLHttpRequest/#the-responsetext-attribute\n    // states that responseText should return '' (and responseXML null)\n    // when the state is not LOADING or DONE. Instead, IE can\n    // throw unexpected exceptions, for example when a request is aborted\n    // or no data is available yet.\n    goog.log.fine(this.logger_, 'Can not get responseText: ' + e.message);\n    return '';\n  }\n};\n\n\n/**\n * Get the response body from the Xhr object. This property is only available\n * in IE since version 7 according to MSDN:\n * http://msdn.microsoft.com/en-us/library/ie/ms534368(v=vs.85).aspx\n * Will only return correct result when called from the context of a callback.\n *\n * One option is to construct a VBArray from the returned object and convert\n * it to a JavaScript array using the toArray method:\n * `(new window['VBArray'](xhrIo.getResponseBody())).toArray()`\n * This will result in an array of numbers in the range of [0..255]\n *\n * Another option is to use the VBScript CStr method to convert it into a\n * string as outlined in http://stackoverflow.com/questions/1919972\n *\n * @return {Object} Binary result from the server or null if not available.\n */\ngoog.net.XhrIo.prototype.getResponseBody = function() {\n  try {\n    if (this.xhr_ && 'responseBody' in this.xhr_) {\n      return this.xhr_['responseBody'];\n    }\n  } catch (e) {\n    // IE can throw unexpected exceptions, for example when a request is aborted\n    // or no data is yet available.\n    goog.log.fine(this.logger_, 'Can not get responseBody: ' + e.message);\n  }\n  return null;\n};\n\n\n/**\n * Get the response XML from the Xhr object\n * Will only return correct result when called from the context of a callback.\n * @return {Document} The DOM Document representing the XML file, or null\n * if no result available.\n */\ngoog.net.XhrIo.prototype.getResponseXml = function() {\n  try {\n    return this.xhr_ ? this.xhr_.responseXML : null;\n  } catch (e) {\n    goog.log.fine(this.logger_, 'Can not get responseXML: ' + e.message);\n    return null;\n  }\n};\n\n\n/**\n * Get the response and evaluates it as JSON from the Xhr object\n * Will only return correct result when called from the context of a callback\n * @param {string=} opt_xssiPrefix Optional XSSI prefix string to use for\n *     stripping of the response before parsing. This needs to be set only if\n *     your backend server prepends the same prefix string to the JSON response.\n * @throws Error if the response text is invalid JSON.\n * @return {Object|undefined} JavaScript object.\n */\ngoog.net.XhrIo.prototype.getResponseJson = function(opt_xssiPrefix) {\n  if (!this.xhr_) {\n    return undefined;\n  }\n\n  var responseText = this.xhr_.responseText;\n  if (opt_xssiPrefix && responseText.indexOf(opt_xssiPrefix) == 0) {\n    responseText = responseText.substring(opt_xssiPrefix.length);\n  }\n\n  return goog.json.hybrid.parse(responseText);\n};\n\n\n/**\n * Get the response as the type specificed by {@link #setResponseType}. At time\n * of writing, this is only directly supported in very recent versions of WebKit\n * (10.0.612.1 dev and later). If the field is not supported directly, we will\n * try to emulate it.\n *\n * Emulating the response means following the rules laid out at\n * http://www.w3.org/TR/XMLHttpRequest/#the-response-attribute\n *\n * On browsers with no support for this (Chrome < 10, Firefox < 4, etc), only\n * response types of DEFAULT or TEXT may be used, and the response returned will\n * be the text response.\n *\n * On browsers with Mozilla's draft support for array buffers (Firefox 4, 5),\n * only response types of DEFAULT, TEXT, and ARRAY_BUFFER may be used, and the\n * response returned will be either the text response or the Mozilla\n * implementation of the array buffer response.\n *\n * On browsers will full support, any valid response type supported by the\n * browser may be used, and the response provided by the browser will be\n * returned.\n *\n * @return {*} The response.\n */\ngoog.net.XhrIo.prototype.getResponse = function() {\n  try {\n    if (!this.xhr_) {\n      return null;\n    }\n    if ('response' in this.xhr_) {\n      return this.xhr_.response;\n    }\n    switch (this.responseType_) {\n      case ResponseType.DEFAULT:\n      case ResponseType.TEXT:\n        return this.xhr_.responseText;\n      // DOCUMENT and BLOB don't need to be handled here because they are\n      // introduced in the same spec that adds the .response field, and would\n      // have been caught above.\n      // ARRAY_BUFFER needs an implementation for Firefox 4, where it was\n      // implemented using a draft spec rather than the final spec.\n      case ResponseType.ARRAY_BUFFER:\n        if ('mozResponseArrayBuffer' in this.xhr_) {\n          return this.xhr_.mozResponseArrayBuffer;\n        }\n    }\n    // Fell through to a response type that is not supported on this browser.\n    goog.log.error(\n        this.logger_, 'Response type ' + this.responseType_ + ' is not ' +\n            'supported on this browser');\n    return null;\n  } catch (e) {\n    goog.log.fine(this.logger_, 'Can not get response: ' + e.message);\n    return null;\n  }\n};\n\n\n/**\n * Get the value of the response-header with the given name from the Xhr object\n * Will only return correct result when called from the context of a callback\n * and the request has completed\n * @param {string} key The name of the response-header to retrieve.\n * @return {string|undefined} The value of the response-header named key.\n */\ngoog.net.XhrIo.prototype.getResponseHeader = function(key) {\n  if (!this.xhr_ || !this.isComplete()) {\n    return undefined;\n  }\n\n  var value = this.xhr_.getResponseHeader(key);\n  return value === null ? undefined : value;\n};\n\n\n/**\n * Gets the text of all the headers in the response.\n * Will only return correct result when called from the context of a callback\n * and the request has completed.\n * @return {string} The value of the response headers or empty string.\n */\ngoog.net.XhrIo.prototype.getAllResponseHeaders = function() {\n  // getAllResponseHeaders can return null if no response has been received,\n  // ensure we always return an empty string.\n  return this.xhr_ && this.isComplete() ?\n      (this.xhr_.getAllResponseHeaders() || '') :\n      '';\n};\n\n\n/**\n * Returns all response headers as a key-value map.\n * Multiple values for the same header key can be combined into one,\n * separated by a comma and a space.\n * Note that the native getResponseHeader method for retrieving a single header\n * does a case insensitive match on the header name. This method does not\n * include any case normalization logic, it will just return a key-value\n * representation of the headers.\n * See: http://www.w3.org/TR/XMLHttpRequest/#the-getresponseheader()-method\n * @return {!Object<string, string>} An object with the header keys as keys\n *     and header values as values.\n */\ngoog.net.XhrIo.prototype.getResponseHeaders = function() {\n  // TODO(user): Make this function parse headers as per the spec\n  // (https://tools.ietf.org/html/rfc2616#section-4.2).\n\n  var headersObject = {};\n  var headersArray = this.getAllResponseHeaders().split('\\r\\n');\n  for (var i = 0; i < headersArray.length; i++) {\n    if (goog.string.isEmptyOrWhitespace(headersArray[i])) {\n      continue;\n    }\n    var keyValue =\n        goog.string.splitLimit(headersArray[i], ':', /* maxSplitCount= */ 1);\n    var key = keyValue[0];\n    var value = keyValue[1];\n\n    if (typeof value !== 'string') {\n      // There must be a value but it can be the empty string.\n      continue;\n    }\n\n    // Whitespace at the start and end of the value is meaningless.\n    value = value.trim();\n    // The key should not contain whitespace but we currently ignore that.\n\n    var values = headersObject[key] || [];\n    headersObject[key] = values;\n    values.push(value);\n  }\n\n  return goog.object.map(headersObject, function(values) {\n    return values.join(', ');\n  });\n};\n\n\n/**\n * Get the value of the response-header with the given name from the Xhr object.\n * As opposed to {@link #getResponseHeader}, this method does not require that\n * the request has completed.\n * @param {string} key The name of the response-header to retrieve.\n * @return {?string} The value of the response-header, or null if it is\n *     unavailable.\n */\ngoog.net.XhrIo.prototype.getStreamingResponseHeader = function(key) {\n  return this.xhr_ ? this.xhr_.getResponseHeader(key) : null;\n};\n\n\n/**\n * Gets the text of all the headers in the response. As opposed to\n * {@link #getAllResponseHeaders}, this method does not require that the request\n * has completed.\n * @return {string} The value of the response headers or empty string.\n */\ngoog.net.XhrIo.prototype.getAllStreamingResponseHeaders = function() {\n  return this.xhr_ ? this.xhr_.getAllResponseHeaders() : '';\n};\n\n\n/**\n * Get the last error message\n * @return {!goog.net.ErrorCode} Last error code.\n */\ngoog.net.XhrIo.prototype.getLastErrorCode = function() {\n  return this.lastErrorCode_;\n};\n\n\n/**\n * Get the last error message\n * @return {string} Last error message.\n */\ngoog.net.XhrIo.prototype.getLastError = function() {\n  return typeof this.lastError_ === 'string' ? this.lastError_ :\n                                               String(this.lastError_);\n};\n\n\n/**\n * Adds the last method, status and URI to the message.  This is used to add\n * this information to the logging calls.\n * @param {string} msg The message text that we want to add the extra text to.\n * @return {string} The message with the extra text appended.\n * @private\n */\ngoog.net.XhrIo.prototype.formatMsg_ = function(msg) {\n  return msg + ' [' + this.lastMethod_ + ' ' + this.lastUri_ + ' ' +\n      this.getStatus() + ']';\n};\n\n\n// Register the xhr handler as an entry point, so that\n// it can be monitored for exception handling, etc.\ngoog.debug.entryPointRegistry.register(\n    /**\n     * @param {function(!Function): !Function} transformer The transforming\n     *     function.\n     */\n    function(transformer) {\n      goog.net.XhrIo.prototype.onReadyStateChangeEntryPoint_ =\n          transformer(goog.net.XhrIo.prototype.onReadyStateChangeEntryPoint_);\n    });\n});  // goog.scope\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Common events for the network classes.\n */\n\n\ngoog.provide('goog.net.EventType');\n\n\n/**\n * Event names for network events\n * @enum {string}\n */\ngoog.net.EventType = {\n  COMPLETE: 'complete',\n  SUCCESS: 'success',\n  ERROR: 'error',\n  ABORT: 'abort',\n  READY: 'ready',\n  READY_STATE_CHANGE: 'readystatechange',\n  TIMEOUT: 'timeout',\n  INCREMENTAL_DATA: 'incrementaldata',\n  PROGRESS: 'progress',\n  // DOWNLOAD_PROGRESS and UPLOAD_PROGRESS are special events dispatched by\n  // goog.net.XhrIo to allow binding listeners specific to each type of\n  // progress.\n  DOWNLOAD_PROGRESS: 'downloadprogress',\n  UPLOAD_PROGRESS: 'uploadprogress',\n};\n","// Copyright 2007 Bob Ippolito. All Rights Reserved.\n// Modifications Copyright 2009 The Closure Library Authors. All Rights\n// Reserved.\n\n/**\n * @license Portions of this code are from MochiKit, received by\n * The Closure Authors under the MIT license. All other code is Copyright\n * 2005-2009 The Closure Authors. All Rights Reserved.\n */\n\n/**\n * @fileoverview Classes for tracking asynchronous operations and handling the\n * results. The Deferred object here is patterned after the Deferred object in\n * the Twisted python networking framework.\n *\n * See: http://twistedmatrix.com/projects/core/documentation/howto/defer.html\n *\n * Based on the Dojo code which in turn is based on the MochiKit code.\n *\n */\n\ngoog.provide('goog.async.Deferred');\ngoog.provide('goog.async.Deferred.AlreadyCalledError');\ngoog.provide('goog.async.Deferred.CanceledError');\n\ngoog.require('goog.Promise');\ngoog.require('goog.Thenable');\ngoog.require('goog.array');\ngoog.require('goog.asserts');\ngoog.require('goog.debug.Error');\n\n\n\n/**\n * A Deferred represents the result of an asynchronous operation. A Deferred\n * instance has no result when it is created, and is \"fired\" (given an initial\n * result) by calling `callback` or `errback`.\n *\n * Once fired, the result is passed through a sequence of callback functions\n * registered with `addCallback` or `addErrback`. The functions may\n * mutate the result before it is passed to the next function in the sequence.\n *\n * Callbacks and errbacks may be added at any time, including after the Deferred\n * has been \"fired\". If there are no pending actions in the execution sequence\n * of a fired Deferred, any new callback functions will be called with the last\n * computed result. Adding a callback function is the only way to access the\n * result of the Deferred.\n *\n * If a Deferred operation is canceled, an optional user-provided cancellation\n * function is invoked which may perform any special cleanup, followed by firing\n * the Deferred's errback sequence with a `CanceledError`. If the\n * Deferred has already fired, cancellation is ignored.\n *\n * Deferreds may be templated to a specific type they produce using generics\n * with syntax such as:\n *\n *    /** @type {goog.async.Deferred<string>} *\\\n *    var d = new goog.async.Deferred();\n *    // Compiler can infer that foo is a string.\n *    d.addCallback(function(foo) {...});\n *    d.callback('string');  // Checked to be passed a string\n *\n * Since deferreds are often used to produce different values across a chain,\n * the type information is not propagated across chains, but rather only\n * associated with specifically cast objects.\n *\n * @param {Function=} opt_onCancelFunction A function that will be called if the\n *     Deferred is canceled. If provided, this function runs before the\n *     Deferred is fired with a `CanceledError`.\n * @param {Object=} opt_defaultScope The default object context to call\n *     callbacks and errbacks in.\n * @constructor\n * @implements {goog.Thenable<VALUE>}\n * @template VALUE\n */\ngoog.async.Deferred = function(opt_onCancelFunction, opt_defaultScope) {\n  'use strict';\n  /**\n   * Entries in the sequence are arrays containing a callback, an errback, and\n   * an optional scope. The callback or errback in an entry may be null.\n   * @type {!Array<!Array>}\n   * @private\n   */\n  this.sequence_ = [];\n\n  /**\n   * Optional function that will be called if the Deferred is canceled.\n   * @type {Function|undefined}\n   * @private\n   */\n  this.onCancelFunction_ = opt_onCancelFunction;\n\n  /**\n   * The default scope to execute callbacks and errbacks in.\n   * @type {Object}\n   * @private\n   */\n  this.defaultScope_ = opt_defaultScope || null;\n\n  /**\n   * Whether the Deferred has been fired.\n   * @type {boolean}\n   * @private\n   */\n  this.fired_ = false;\n\n  /**\n   * Whether the last result in the execution sequence was an error.\n   * @type {boolean}\n   * @private\n   */\n  this.hadError_ = false;\n\n  /**\n   * The current Deferred result, updated as callbacks and errbacks are\n   * executed.\n   * @type {*}\n   * @private\n   */\n  this.result_ = undefined;\n\n  /**\n   * Whether the Deferred is blocked waiting on another Deferred to fire. If a\n   * callback or errback returns a Deferred as a result, the execution sequence\n   * is blocked until that Deferred result becomes available.\n   * @type {boolean}\n   * @private\n   */\n  this.blocked_ = false;\n\n  /**\n   * Whether this Deferred is blocking execution of another Deferred. If this\n   * instance was returned as a result in another Deferred's execution\n   * sequence,that other Deferred becomes blocked until this instance's\n   * execution sequence completes. No additional callbacks may be added to a\n   * Deferred once it is blocking another instance.\n   * @type {boolean}\n   * @private\n   */\n  this.blocking_ = false;\n\n  /**\n   * Whether the Deferred has been canceled without having a custom cancel\n   * function.\n   * @type {boolean}\n   * @private\n   */\n  this.silentlyCanceled_ = false;\n\n  /**\n   * If an error is thrown during Deferred execution with no errback to catch\n   * it, the error is rethrown after a timeout. Reporting the error after a\n   * timeout allows execution to continue in the calling context (empty when\n   * no error is scheduled).\n   * @type {number}\n   * @private\n   */\n  this.unhandledErrorId_ = 0;\n\n  /**\n   * If this Deferred was created by branch(), this will be the \"parent\"\n   * Deferred.\n   * @type {?goog.async.Deferred}\n   * @private\n   */\n  this.parent_ = null;\n\n  /**\n   * The number of Deferred objects that have been branched off this one. This\n   * will be decremented whenever a branch is fired or canceled.\n   * @type {number}\n   * @private\n   */\n  this.branches_ = 0;\n\n  if (goog.async.Deferred.LONG_STACK_TRACES) {\n    /**\n     * Holds the stack trace at time of deferred creation if the JS engine\n     * provides the Error.captureStackTrace API.\n     * @private {?string}\n     */\n    this.constructorStack_ = null;\n    if (Error.captureStackTrace) {\n      var target = { stack: '' };\n      Error.captureStackTrace(target, goog.async.Deferred);\n      // Check if Error.captureStackTrace worked. It fails in gjstest.\n      if (typeof target.stack == 'string') {\n        // Remove first line and force stringify to prevent memory leak due to\n        // holding on to actual stack frames.\n        this.constructorStack_ = target.stack.replace(/^[^\\n]*\\n/, '');\n      }\n    }\n  }\n};\n\n\n/**\n * @define {boolean} Whether unhandled errors should always get rethrown to the\n * global scope. Defaults to false.\n */\ngoog.async.Deferred.STRICT_ERRORS =\n    goog.define('goog.async.Deferred.STRICT_ERRORS', false);\n\n\n/**\n * @define {boolean} Whether to attempt to make stack traces long.  Defaults to\n * false.\n */\ngoog.async.Deferred.LONG_STACK_TRACES =\n    goog.define('goog.async.Deferred.LONG_STACK_TRACES', false);\n\n\n/**\n * Cancels a Deferred that has not yet been fired, or is blocked on another\n * deferred operation. If this Deferred is waiting for a blocking Deferred to\n * fire, the blocking Deferred will also be canceled.\n *\n * If this Deferred was created by calling branch() on a parent Deferred with\n * opt_propagateCancel set to true, the parent may also be canceled. If\n * opt_deepCancel is set, cancel() will be called on the parent (as well as any\n * other ancestors if the parent is also a branch). If one or more branches were\n * created with opt_propagateCancel set to true, the parent will be canceled if\n * cancel() is called on all of those branches.\n *\n * @param {boolean=} opt_deepCancel If true, cancels this Deferred's parent even\n *     if cancel() hasn't been called on some of the parent's branches. Has no\n *     effect on a branch without opt_propagateCancel set to true.\n */\ngoog.async.Deferred.prototype.cancel = function(opt_deepCancel) {\n  'use strict';\n  if (!this.hasFired()) {\n    if (this.parent_) {\n      // Get rid of the parent reference before potentially running the parent's\n      // canceler function to ensure that this cancellation isn't\n      // double-counted.\n      var parent = this.parent_;\n      delete this.parent_;\n      if (opt_deepCancel) {\n        parent.cancel(opt_deepCancel);\n      } else {\n        parent.branchCancel_();\n      }\n    }\n\n    if (this.onCancelFunction_) {\n      // Call in user-specified scope.\n      this.onCancelFunction_.call(this.defaultScope_, this);\n    } else {\n      this.silentlyCanceled_ = true;\n    }\n    if (!this.hasFired()) {\n      this.errback(new goog.async.Deferred.CanceledError(this));\n    }\n  } else if (this.result_ instanceof goog.async.Deferred) {\n    this.result_.cancel();\n  }\n};\n\n\n/**\n * Handle a single branch being canceled. Once all branches are canceled, this\n * Deferred will be canceled as well.\n *\n * @private\n */\ngoog.async.Deferred.prototype.branchCancel_ = function() {\n  'use strict';\n  this.branches_--;\n  if (this.branches_ <= 0) {\n    this.cancel();\n  }\n};\n\n\n/**\n * Called after a blocking Deferred fires. Unblocks this Deferred and resumes\n * its execution sequence.\n *\n * @param {boolean} isSuccess Whether the result is a success or an error.\n * @param {*} res The result of the blocking Deferred.\n * @private\n */\ngoog.async.Deferred.prototype.continue_ = function(isSuccess, res) {\n  'use strict';\n  this.blocked_ = false;\n  this.updateResult_(isSuccess, res);\n};\n\n\n/**\n * Updates the current result based on the success or failure of the last action\n * in the execution sequence.\n *\n * @param {boolean} isSuccess Whether the new result is a success or an error.\n * @param {*} res The result.\n * @private\n */\ngoog.async.Deferred.prototype.updateResult_ = function(isSuccess, res) {\n  'use strict';\n  this.fired_ = true;\n  this.result_ = res;\n  this.hadError_ = !isSuccess;\n  this.fire_();\n};\n\n\n/**\n * Verifies that the Deferred has not yet been fired.\n *\n * @private\n * @throws {Error} If this has already been fired.\n */\ngoog.async.Deferred.prototype.check_ = function() {\n  'use strict';\n  if (this.hasFired()) {\n    if (!this.silentlyCanceled_) {\n      throw new goog.async.Deferred.AlreadyCalledError(this);\n    }\n    this.silentlyCanceled_ = false;\n  }\n};\n\n\n/**\n * Fire the execution sequence for this Deferred by passing the starting result\n * to the first registered callback.\n * @param {VALUE=} opt_result The starting result.\n */\ngoog.async.Deferred.prototype.callback = function(opt_result) {\n  'use strict';\n  this.check_();\n  this.assertNotDeferred_(opt_result);\n  this.updateResult_(true /* isSuccess */, opt_result);\n};\n\n\n/**\n * Fire the execution sequence for this Deferred by passing the starting error\n * result to the first registered errback.\n * @param {*=} opt_result The starting error.\n */\ngoog.async.Deferred.prototype.errback = function(opt_result) {\n  'use strict';\n  this.check_();\n  this.assertNotDeferred_(opt_result);\n  this.makeStackTraceLong_(opt_result);\n  this.updateResult_(false /* isSuccess */, opt_result);\n};\n\n\n/**\n * A method that is invoked with the reason of Deferred's failure for unhandled\n * errors.\n * @type {function(*)}\n * @private\n */\ngoog.async.Deferred.unhandledErrorHandler_ = (e) => {\n  throw e;\n};\n\n\n/**\n * @param {function(*)} handler A function that will be called with the reason\n *     of Deferred's failure on unhandled errors. If none is specified, errors\n *     will fail with `throw`.\n */\ngoog.async.Deferred.setUnhandledErrorHandler = function(handler) {\n  'use strict';\n  goog.async.Deferred.unhandledErrorHandler_ = handler;\n};\n\n\n/**\n * Attempt to make the error's stack trace be long in that it contains the\n * stack trace from the point where the deferred was created on top of the\n * current stack trace to give additional context.\n * @param {*} error\n * @private\n * @suppress {missingProperties} error.stack\n */\ngoog.async.Deferred.prototype.makeStackTraceLong_ = function(error) {\n  'use strict';\n  if (!goog.async.Deferred.LONG_STACK_TRACES) {\n    return;\n  }\n  if (this.constructorStack_ && goog.isObject(error) && error.stack &&\n      // Stack looks like it was system generated. See\n      // https://code.google.com/p/v8/wiki/JavaScriptStackTraceApi\n      (/^[^\\n]+(\\n   [^\\n]+)+/).test(error.stack)) {\n    error.stack = error.stack + '\\nDEFERRED OPERATION:\\n' +\n        this.constructorStack_;\n  }\n};\n\n\n/**\n * Asserts that an object is not a Deferred.\n * @param {*} obj The object to test.\n * @throws {Error} Throws an exception if the object is a Deferred.\n * @private\n */\ngoog.async.Deferred.prototype.assertNotDeferred_ = function(obj) {\n  'use strict';\n  goog.asserts.assert(\n      !(obj instanceof goog.async.Deferred),\n      'An execution sequence may not be initiated with a blocking Deferred.');\n};\n\n\n/**\n * Register a callback function to be called with a successful result. If no\n * value is returned by the callback function, the result value is unchanged. If\n * a new value is returned, it becomes the Deferred result and will be passed to\n * the next callback in the execution sequence.\n *\n * If the function throws an error, the error becomes the new result and will be\n * passed to the next errback in the execution chain.\n *\n * If the function returns a Deferred, the execution sequence will be blocked\n * until that Deferred fires. Its result will be passed to the next callback (or\n * errback if it is an error result) in this Deferred's execution sequence.\n *\n * @param {function(this:T,VALUE):?} cb The function to be called with a\n *     successful result.\n * @param {T=} opt_scope An optional scope to call the callback in.\n * @return {!goog.async.Deferred} This Deferred.\n * @template T\n */\ngoog.async.Deferred.prototype.addCallback = function(cb, opt_scope) {\n  'use strict';\n  return this.addCallbacks(cb, null, opt_scope);\n};\n\n\n/**\n * Register a callback function to be called with an error result. If no value\n * is returned by the function, the error result is unchanged. If a new error\n * value is returned or thrown, that error becomes the Deferred result and will\n * be passed to the next errback in the execution sequence.\n *\n * If the errback function handles the error by returning a non-error value,\n * that result will be passed to the next normal callback in the sequence.\n *\n * If the function returns a Deferred, the execution sequence will be blocked\n * until that Deferred fires. Its result will be passed to the next callback (or\n * errback if it is an error result) in this Deferred's execution sequence.\n *\n * @param {function(this:T,?):?} eb The function to be called on an\n *     unsuccessful result.\n * @param {T=} opt_scope An optional scope to call the errback in.\n * @return {!goog.async.Deferred<VALUE>} This Deferred.\n * @template T\n */\ngoog.async.Deferred.prototype.addErrback = function(eb, opt_scope) {\n  'use strict';\n  return this.addCallbacks(null, eb, opt_scope);\n};\n\n\n/**\n * Registers one function as both a callback and errback.\n *\n * @param {function(this:T,?):?} f The function to be called on any result.\n * @param {T=} opt_scope An optional scope to call the function in.\n * @return {!goog.async.Deferred} This Deferred.\n * @template T\n */\ngoog.async.Deferred.prototype.addBoth = function(f, opt_scope) {\n  'use strict';\n  return this.addCallbacks(f, f, opt_scope);\n};\n\n\n/**\n * Like addBoth, but propagates uncaught exceptions in the errback.\n *\n * @param {function(this:T,?):?} f The function to be called on any result.\n * @param {T=} opt_scope An optional scope to call the function in.\n * @return {!goog.async.Deferred<VALUE>} This Deferred.\n * @template T\n */\ngoog.async.Deferred.prototype.addFinally = function(f, opt_scope) {\n  'use strict';\n  return this.addCallbacks(f, function(err) {\n    'use strict';\n    var result = f.call(/** @type {?} */ (this), err);\n    if (result === undefined) {\n      throw err;\n    }\n    return result;\n  }, opt_scope);\n};\n\n\n/**\n * Registers a callback function and an errback function at the same position\n * in the execution sequence. Only one of these functions will execute,\n * depending on the error state during the execution sequence.\n *\n * NOTE: This is not equivalent to {@code def.addCallback().addErrback()}! If\n * the callback is invoked, the errback will be skipped, and vice versa.\n *\n * @param {?(function(this:T,VALUE):?)} cb The function to be called on a\n *     successful result.\n * @param {?(function(this:T,?):?)} eb The function to be called on an\n *     unsuccessful result.\n * @param {T=} opt_scope An optional scope to call the functions in.\n * @return {!goog.async.Deferred} This Deferred.\n * @template T\n */\ngoog.async.Deferred.prototype.addCallbacks = function(cb, eb, opt_scope) {\n  'use strict';\n  goog.asserts.assert(!this.blocking_, 'Blocking Deferreds can not be re-used');\n  this.sequence_.push([cb, eb, opt_scope]);\n  if (this.hasFired()) {\n    this.fire_();\n  }\n  return this;\n};\n\n\n/**\n * Implements {@see goog.Thenable} for seamless integration with\n * {@see goog.Promise}.\n * Deferred results are mutable and may represent multiple values over\n * their lifetime. Calling `then` on a Deferred returns a Promise\n * with the result of the Deferred at that point in its callback chain.\n * Note that if the Deferred result is never mutated, and only\n * `then` calls are made, the Deferred will behave like a Promise.\n *\n * @override\n */\ngoog.async.Deferred.prototype.then = function(\n    opt_onFulfilled, opt_onRejected, opt_context) {\n  'use strict';\n  var resolve, reject;\n  var promise = new goog.Promise(function(res, rej) {\n    'use strict';\n    // Copying resolvers to outer scope, so that they are available when the\n    // deferred callback fires (which may be synchronous).\n    resolve = res;\n    reject = rej;\n  });\n  this.addCallbacks(resolve, function(reason) {\n    'use strict';\n    if (reason instanceof goog.async.Deferred.CanceledError) {\n      promise.cancel();\n    } else {\n      reject(reason);\n    }\n  });\n  return promise.then(opt_onFulfilled, opt_onRejected, opt_context);\n};\ngoog.Thenable.addImplementation(goog.async.Deferred);\n\n\n/**\n * Links another Deferred to the end of this Deferred's execution sequence. The\n * result of this execution sequence will be passed as the starting result for\n * the chained Deferred, invoking either its first callback or errback.\n *\n * @param {!goog.async.Deferred} otherDeferred The Deferred to chain.\n * @return {!goog.async.Deferred} This Deferred.\n */\ngoog.async.Deferred.prototype.chainDeferred = function(otherDeferred) {\n  'use strict';\n  this.addCallbacks(\n      otherDeferred.callback, otherDeferred.errback, otherDeferred);\n  return this;\n};\n\n\n/**\n * Makes this Deferred wait for another Deferred's execution sequence to\n * complete before continuing.\n *\n * This is equivalent to adding a callback that returns `otherDeferred`,\n * but doesn't prevent additional callbacks from being added to\n * `otherDeferred`.\n *\n * @param {!goog.async.Deferred|!goog.Thenable} otherDeferred The Deferred\n *     to wait for.\n * @return {!goog.async.Deferred} This Deferred.\n */\ngoog.async.Deferred.prototype.awaitDeferred = function(otherDeferred) {\n  'use strict';\n  if (!(otherDeferred instanceof goog.async.Deferred)) {\n    // The Thenable case.\n    return this.addCallback(function() {\n      'use strict';\n      return otherDeferred;\n    });\n  }\n  return this.addCallback(goog.bind(otherDeferred.branch, otherDeferred));\n};\n\n\n/**\n * Creates a branch off this Deferred's execution sequence, and returns it as a\n * new Deferred. The branched Deferred's starting result will be shared with the\n * parent at the point of the branch, even if further callbacks are added to the\n * parent.\n *\n * All branches at the same stage in the execution sequence will receive the\n * same starting value.\n *\n * @param {boolean=} opt_propagateCancel If cancel() is called on every child\n *     branch created with opt_propagateCancel, the parent will be canceled as\n *     well.\n * @return {!goog.async.Deferred<VALUE>} A Deferred that will be started with\n *     the computed result from this stage in the execution sequence.\n */\ngoog.async.Deferred.prototype.branch = function(opt_propagateCancel) {\n  'use strict';\n  var d = new goog.async.Deferred();\n  this.chainDeferred(d);\n  if (opt_propagateCancel) {\n    d.parent_ = this;\n    this.branches_++;\n  }\n  return d;\n};\n\n\n/**\n * @return {boolean} Whether the execution sequence has been started on this\n *     Deferred by invoking `callback` or `errback`.\n */\ngoog.async.Deferred.prototype.hasFired = function() {\n  'use strict';\n  return this.fired_;\n};\n\n\n/**\n * @param {*} res The latest result in the execution sequence.\n * @return {boolean} Whether the current result is an error that should cause\n *     the next errback to fire. May be overridden by subclasses to handle\n *     special error types.\n * @protected\n */\ngoog.async.Deferred.prototype.isError = function(res) {\n  'use strict';\n  return res instanceof Error;\n};\n\n\n/**\n * @return {boolean} Whether an errback exists in the remaining sequence.\n * @private\n */\ngoog.async.Deferred.prototype.hasErrback_ = function() {\n  'use strict';\n  return goog.array.some(this.sequence_, function(sequenceRow) {\n    'use strict';\n    // The errback is the second element in the array.\n    return goog.isFunction(sequenceRow[1]);\n  });\n};\n\n\n/**\n * Return the most recent value fired.\n *\n * @return {VALUE|undefined}\n * @deprecated This method is only for facilitating migrations from other async\n *     primitives.\n */\ngoog.async.Deferred.prototype.getLastValueForMigration = function() {\n  'use strict';\n  return (this.hasFired() && !this.hadError_) ? this.result_ : undefined;\n};\n\n\n/**\n * Exhausts the execution sequence while a result is available. The result may\n * be modified by callbacks or errbacks, and execution will block if the\n * returned result is an incomplete Deferred.\n *\n * @private\n */\ngoog.async.Deferred.prototype.fire_ = function() {\n  'use strict';\n  if (this.unhandledErrorId_ && this.hasFired() && this.hasErrback_()) {\n    // It is possible to add errbacks after the Deferred has fired. If a new\n    // errback is added immediately after the Deferred encountered an unhandled\n    // error, but before that error is rethrown, the error is unscheduled.\n    goog.async.Deferred.unscheduleError_(this.unhandledErrorId_);\n    this.unhandledErrorId_ = 0;\n  }\n\n  if (this.parent_) {\n    this.parent_.branches_--;\n    delete this.parent_;\n  }\n\n  var res = this.result_;\n  var unhandledException = false;\n  var isNewlyBlocked = false;\n\n  while (this.sequence_.length && !this.blocked_) {\n    var sequenceEntry = this.sequence_.shift();\n\n    var callback = sequenceEntry[0];\n    var errback = sequenceEntry[1];\n    var scope = sequenceEntry[2];\n\n    var f = this.hadError_ ? errback : callback;\n    if (f) {\n\n      try {\n        var ret = f.call(scope || this.defaultScope_, res);\n\n        // If no result, then use previous result.\n        if (ret !== undefined) {\n          // Bubble up the error as long as the return value hasn't changed.\n          this.hadError_ = this.hadError_ && (ret == res || this.isError(ret));\n          this.result_ = res = ret;\n        }\n\n        if (goog.Thenable.isImplementedBy(res) ||\n            (typeof goog.global['Promise'] === 'function' &&\n            res instanceof goog.global['Promise'])) {\n          isNewlyBlocked = true;\n          this.blocked_ = true;\n        }\n\n      } catch (ex) {\n        res = ex;\n        this.hadError_ = true;\n        this.makeStackTraceLong_(res);\n\n        if (!this.hasErrback_()) {\n          // If an error is thrown with no additional errbacks in the queue,\n          // prepare to rethrow the error.\n          unhandledException = true;\n        }\n      }\n    }\n  }\n\n  this.result_ = res;\n\n  if (isNewlyBlocked) {\n    var onCallback = goog.bind(this.continue_, this, true /* isSuccess */);\n    var onErrback = goog.bind(this.continue_, this, false /* isSuccess */);\n\n    if (res instanceof goog.async.Deferred) {\n      res.addCallbacks(onCallback, onErrback);\n      res.blocking_ = true;\n    } else {\n      /** @type {!IThenable} */ (res).then(onCallback, onErrback);\n    }\n  } else if (goog.async.Deferred.STRICT_ERRORS && this.isError(res) &&\n      !(res instanceof goog.async.Deferred.CanceledError)) {\n    this.hadError_ = true;\n    unhandledException = true;\n  }\n\n  if (unhandledException) {\n    // Rethrow the unhandled error after a timeout. Execution will continue, but\n    // the error will be seen by global handlers and the user. The throw will\n    // be canceled if another errback is appended before the timeout executes.\n    // The error's original stack trace is preserved where available.\n    this.unhandledErrorId_ = goog.async.Deferred.scheduleError_(res);\n  }\n};\n\n\n/**\n * Creates a Deferred that has an initial result.\n *\n * @param {*=} opt_result The result.\n * @return {!goog.async.Deferred} The new Deferred.\n */\ngoog.async.Deferred.succeed = function(opt_result) {\n  'use strict';\n  var d = new goog.async.Deferred();\n  d.callback(opt_result);\n  return d;\n};\n\n\n/**\n * Creates a Deferred that fires when the given promise resolves.\n * Use only during migration to Promises.\n *\n * Note: If the promise resolves to a thenable value (which is not allowed by\n * conforming promise implementations), then the deferred may behave\n * unexpectedly as it tries to wait on it. This should not be a risk when using\n * goog.Promise, goog.async.Deferred, or native Promise objects.\n *\n * @param {!IThenable<T>} promise\n * @return {!goog.async.Deferred<T>} The new Deferred.\n * @template T\n */\ngoog.async.Deferred.fromPromise = function(promise) {\n  'use strict';\n  var d = new goog.async.Deferred();\n  promise.then(\n      function(value) {\n        'use strict';\n        d.callback(value);\n      },\n      function(error) {\n        'use strict';\n        d.errback(error);\n      });\n  return d;\n};\n\n\n/**\n * Creates a Deferred that has an initial error result.\n *\n * @param {*} res The error result.\n * @return {!goog.async.Deferred} The new Deferred.\n */\ngoog.async.Deferred.fail = function(res) {\n  'use strict';\n  var d = new goog.async.Deferred();\n  d.errback(res);\n  return d;\n};\n\n\n/**\n * Creates a Deferred that has already been canceled.\n *\n * @return {!goog.async.Deferred} The new Deferred.\n */\ngoog.async.Deferred.canceled = function() {\n  'use strict';\n  var d = new goog.async.Deferred();\n  d.cancel();\n  return d;\n};\n\n\n/**\n * Normalizes values that may or may not be Deferreds.\n *\n * If the input value is a Deferred, the Deferred is branched (so the original\n * execution sequence is not modified) and the input callback added to the new\n * branch. The branch is returned to the caller.\n *\n * If the input value is not a Deferred, the callback will be executed\n * immediately and an already firing Deferred will be returned to the caller.\n *\n * In the following (contrived) example, if <code>isImmediate</code> is true\n * then 3 is alerted immediately, otherwise 6 is alerted after a 2-second delay.\n *\n * <pre>\n * var value;\n * if (isImmediate) {\n *   value = 3;\n * } else {\n *   value = new goog.async.Deferred();\n *   setTimeout(function() { value.callback(6); }, 2000);\n * }\n *\n * var d = goog.async.Deferred.when(value, alert);\n * </pre>\n *\n * @param {*} value Deferred or normal value to pass to the callback.\n * @param {function(this:T, ?):?} callback The callback to execute.\n * @param {T=} opt_scope An optional scope to call the callback in.\n * @return {!goog.async.Deferred} A new Deferred that will call the input\n *     callback with the input value.\n * @template T\n */\ngoog.async.Deferred.when = function(value, callback, opt_scope) {\n  'use strict';\n  if (value instanceof goog.async.Deferred) {\n    return value.branch(true).addCallback(callback, opt_scope);\n  } else {\n    return goog.async.Deferred.succeed(value).addCallback(callback, opt_scope);\n  }\n};\n\n\n\n/**\n * An error sub class that is used when a Deferred has already been called.\n * @param {!goog.async.Deferred} deferred The Deferred.\n *\n * @constructor\n * @extends {goog.debug.Error}\n */\ngoog.async.Deferred.AlreadyCalledError = function(deferred) {\n  'use strict';\n  goog.debug.Error.call(this);\n\n  /**\n   * The Deferred that raised this error.\n   * @type {goog.async.Deferred}\n   */\n  this.deferred = deferred;\n};\ngoog.inherits(goog.async.Deferred.AlreadyCalledError, goog.debug.Error);\n\n\n/** @override */\ngoog.async.Deferred.AlreadyCalledError.prototype.message =\n    'Deferred has already fired';\n\n\n/** @override */\ngoog.async.Deferred.AlreadyCalledError.prototype.name = 'AlreadyCalledError';\n\n\n\n/**\n * An error sub class that is used when a Deferred is canceled.\n *\n * @param {!goog.async.Deferred} deferred The Deferred object.\n * @constructor\n * @extends {goog.debug.Error}\n */\ngoog.async.Deferred.CanceledError = function(deferred) {\n  'use strict';\n  goog.debug.Error.call(this);\n\n  /**\n   * The Deferred that raised this error.\n   * @type {goog.async.Deferred}\n   */\n  this.deferred = deferred;\n};\ngoog.inherits(goog.async.Deferred.CanceledError, goog.debug.Error);\n\n\n/** @override */\ngoog.async.Deferred.CanceledError.prototype.message = 'Deferred was canceled';\n\n\n/** @override */\ngoog.async.Deferred.CanceledError.prototype.name = 'CanceledError';\n\n\n\n/**\n * Wrapper around errors that are scheduled to be thrown by failing deferreds\n * after a timeout.\n *\n * @param {*} error Error from a failing deferred.\n * @constructor\n * @final\n * @private\n * @struct\n */\ngoog.async.Deferred.Error_ = function(error) {\n  'use strict';\n  /** @const @private {number} */\n  this.id_ = goog.global.setTimeout(goog.bind(this.throwError, this), 0);\n\n  /** @const @private {*} */\n  this.error_ = error;\n};\n\n\n/**\n * Actually throws the error and removes it from the list of pending\n * deferred errors.\n */\ngoog.async.Deferred.Error_.prototype.throwError = function() {\n  'use strict';\n  goog.asserts.assert(\n      goog.async.Deferred.errorMap_[this.id_],\n      'Cannot throw an error that is not scheduled.');\n  delete goog.async.Deferred.errorMap_[this.id_];\n  goog.async.Deferred.unhandledErrorHandler_(this.error_);\n};\n\n\n/**\n * Resets the error throw timer.\n */\ngoog.async.Deferred.Error_.prototype.resetTimer = function() {\n  'use strict';\n  goog.global.clearTimeout(this.id_);\n};\n\n\n/**\n * Map of unhandled errors scheduled to be rethrown in a future timestep.\n * @private {!Object<(number|string), goog.async.Deferred.Error_>}\n */\ngoog.async.Deferred.errorMap_ = {};\n\n\n/**\n * Schedules an error to be thrown after a delay.\n * @param {*} error Error from a failing deferred.\n * @return {number} Id of the error.\n * @private\n */\ngoog.async.Deferred.scheduleError_ = function(error) {\n  'use strict';\n  var deferredError = new goog.async.Deferred.Error_(error);\n  goog.async.Deferred.errorMap_[deferredError.id_] = deferredError;\n  return deferredError.id_;\n};\n\n\n/**\n * Unschedules an error from being thrown.\n * @param {number} id Id of the deferred error to unschedule.\n * @private\n */\ngoog.async.Deferred.unscheduleError_ = function(id) {\n  'use strict';\n  var error = goog.async.Deferred.errorMap_[id];\n  if (error) {\n    error.resetTimer();\n    delete goog.async.Deferred.errorMap_[id];\n  }\n};\n\n\n/**\n * Asserts that there are no pending deferred errors. If there are any\n * scheduled errors, one will be thrown immediately to make this function fail.\n */\ngoog.async.Deferred.assertNoErrors = function() {\n  'use strict';\n  var map = goog.async.Deferred.errorMap_;\n  for (var key in map) {\n    var error = map[key];\n    error.resetTimer();\n    error.throwError();\n  }\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview A utility to load JavaScript files via DOM script tags.\n * Refactored from goog.net.Jsonp. Works cross-domain.\n */\n\ngoog.provide('goog.net.jsloader');\ngoog.provide('goog.net.jsloader.Error');\ngoog.provide('goog.net.jsloader.ErrorCode');\ngoog.provide('goog.net.jsloader.Options');\n\ngoog.require('goog.array');\ngoog.require('goog.async.Deferred');\ngoog.require('goog.debug.Error');\ngoog.require('goog.dom');\ngoog.require('goog.dom.TagName');\ngoog.require('goog.dom.safe');\ngoog.require('goog.html.TrustedResourceUrl');\ngoog.require('goog.object');\n\n\n/**\n * The name of the property of goog.global under which the JavaScript\n * verification object is stored by the loaded script.\n * @private {string}\n */\ngoog.net.jsloader.GLOBAL_VERIFY_OBJS_ = 'closure_verification';\n\n\n/**\n * The default length of time, in milliseconds, we are prepared to wait for a\n * load request to complete.\n * @type {number}\n */\ngoog.net.jsloader.DEFAULT_TIMEOUT = 5000;\n\n\n/**\n * Optional parameters for goog.net.jsloader.send.\n * timeout: The length of time, in milliseconds, we are prepared to wait\n *     for a load request to complete, or 0 or negative for no timeout. Default\n *     is 5 seconds.\n * document: The HTML document under which to load the JavaScript. Default is\n *     the current document.\n * cleanupWhenDone: If true clean up the script tag after script completes to\n *     load. This is important if you just want to read data from the JavaScript\n *     and then throw it away. Default is false.\n * attributes: Additional attributes to set on the script tag.\n *\n * @typedef {{\n *   timeout: (number|undefined),\n *   document: (HTMLDocument|undefined),\n *   cleanupWhenDone: (boolean|undefined),\n *   attributes: (!Object<string, string>|undefined)\n * }}\n */\ngoog.net.jsloader.Options;\n\n\n/**\n * Scripts (URIs) waiting to be loaded.\n * @private {!Array<!goog.html.TrustedResourceUrl>}\n */\ngoog.net.jsloader.scriptsToLoad_ = [];\n\n\n/**\n * The deferred result of loading the URIs in scriptsToLoad_.\n * We need to return this to a caller that wants to load URIs while\n * a deferred is already working on them.\n * @private {!goog.async.Deferred<null>}\n */\ngoog.net.jsloader.scriptLoadingDeferred_;\n\n\n\n/**\n * Loads and evaluates the JavaScript files at the specified URIs, guaranteeing\n * the order of script loads.\n *\n * Because we have to load the scripts in serial (load script 1, exec script 1,\n * load script 2, exec script 2, and so on), this will be slower than doing\n * the network fetches in parallel.\n *\n * If you need to load a large number of scripts but dependency order doesn't\n * matter, you should just call goog.net.jsloader.safeLoad N times.\n *\n * If you need to load a large number of scripts on the same domain,\n * you may want to use goog.module.ModuleLoader.\n *\n * @param {Array<!goog.html.TrustedResourceUrl>} trustedUris The URIs to load.\n * @param {goog.net.jsloader.Options=} opt_options Optional parameters. See\n *     goog.net.jsloader.options documentation for details.\n * @return {!goog.async.Deferred} The deferred result, that may be used to add\n *     callbacks\n */\ngoog.net.jsloader.safeLoadMany = function(trustedUris, opt_options) {\n  // Loading the scripts in serial introduces asynchronosity into the flow.\n  // Therefore, there are race conditions where client A can kick off the load\n  // sequence for client B, even though client A's scripts haven't all been\n  // loaded yet.\n  //\n  // To work around this issue, all module loads share a queue.\n  if (!trustedUris.length) {\n    return goog.async.Deferred.succeed(null);\n  }\n\n  var isAnotherModuleLoading = goog.net.jsloader.scriptsToLoad_.length;\n  goog.array.extend(goog.net.jsloader.scriptsToLoad_, trustedUris);\n  if (isAnotherModuleLoading) {\n    // jsloader is still loading some other scripts.\n    // In order to prevent the race condition noted above, we just add\n    // these URIs to the end of the scripts' queue and return the deferred\n    // result of the ongoing script load, so the caller knows when they\n    // finish loading.\n    return goog.net.jsloader.scriptLoadingDeferred_;\n  }\n\n  trustedUris = goog.net.jsloader.scriptsToLoad_;\n  var popAndLoadNextScript = function() {\n    var trustedUri = trustedUris.shift();\n    var deferred = goog.net.jsloader.safeLoad(trustedUri, opt_options);\n    if (trustedUris.length) {\n      deferred.addBoth(popAndLoadNextScript);\n    }\n    return deferred;\n  };\n  goog.net.jsloader.scriptLoadingDeferred_ = popAndLoadNextScript();\n  return goog.net.jsloader.scriptLoadingDeferred_;\n};\n\n\n/**\n * Loads and evaluates a JavaScript file.\n * When the script loads, a user callback is called.\n * It is the client's responsibility to verify that the script ran successfully.\n *\n * @param {!goog.html.TrustedResourceUrl} trustedUri The URI of the JavaScript.\n * @param {goog.net.jsloader.Options=} opt_options Optional parameters. See\n *     goog.net.jsloader.Options documentation for details.\n * @return {!goog.async.Deferred} The deferred result, that may be used to add\n *     callbacks and/or cancel the transmission.\n *     The error callback will be called with a single goog.net.jsloader.Error\n *     parameter.\n */\ngoog.net.jsloader.safeLoad = function(trustedUri, opt_options) {\n  var options = opt_options || {};\n  var doc = options.document || document;\n  var uri = goog.html.TrustedResourceUrl.unwrap(trustedUri);\n\n  var script = goog.dom.createElement(goog.dom.TagName.SCRIPT);\n  var request = {script_: script, timeout_: undefined};\n  var deferred = new goog.async.Deferred(goog.net.jsloader.cancel_, request);\n\n  // Set a timeout.\n  var timeout = null;\n  var timeoutDuration = (options.timeout != null) ?\n      options.timeout :\n      goog.net.jsloader.DEFAULT_TIMEOUT;\n  if (timeoutDuration > 0) {\n    timeout = window.setTimeout(function() {\n      goog.net.jsloader.cleanup_(script, true);\n      deferred.errback(\n          new goog.net.jsloader.Error(\n              goog.net.jsloader.ErrorCode.TIMEOUT,\n              'Timeout reached for loading script ' + uri));\n    }, timeoutDuration);\n    request.timeout_ = timeout;\n  }\n\n  // Hang the user callback to be called when the script completes to load.\n  // NOTE(user): This callback will be called in IE even upon error. In any\n  // case it is the client's responsibility to verify that the script ran\n  // successfully.\n  script.onload = script.onreadystatechange = function() {\n    if (!script.readyState || script.readyState == 'loaded' ||\n        script.readyState == 'complete') {\n      var removeScriptNode = options.cleanupWhenDone || false;\n      goog.net.jsloader.cleanup_(script, removeScriptNode, timeout);\n      deferred.callback(null);\n    }\n  };\n\n  // Add an error callback.\n  // NOTE(user): Not supported in IE.\n  script.onerror = function() {\n    goog.net.jsloader.cleanup_(script, true, timeout);\n    deferred.errback(\n        new goog.net.jsloader.Error(\n            goog.net.jsloader.ErrorCode.LOAD_ERROR,\n            'Error while loading script ' + uri));\n  };\n\n  var properties = options.attributes || {};\n  goog.object.extend(\n      properties, {'type': 'text/javascript', 'charset': 'UTF-8'});\n  goog.dom.setProperties(script, properties);\n  // NOTE(user): Safari never loads the script if we don't set the src\n  // attribute before appending.\n  goog.dom.safe.setScriptSrc(script, trustedUri);\n  var scriptParent = goog.net.jsloader.getScriptParentElement_(doc);\n  scriptParent.appendChild(script);\n\n  return deferred;\n};\n\n\n/**\n * Loads a JavaScript file and verifies it was evaluated successfully, using a\n * verification object.\n * The verification object is set by the loaded JavaScript at the end of the\n * script.\n * We verify this object was set and return its value in the success callback.\n * If the object is not defined we trigger an error callback.\n *\n * @param {!goog.html.TrustedResourceUrl} trustedUri The URI of the JavaScript.\n * @param {string} verificationObjName The name of the verification object that\n *     the loaded script should set.\n * @param {goog.net.jsloader.Options} options Optional parameters. See\n *     goog.net.jsloader.Options documentation for details.\n * @return {!goog.async.Deferred} The deferred result, that may be used to add\n *     callbacks and/or cancel the transmission.\n *     The success callback will be called with a single parameter containing\n *     the value of the verification object.\n *     The error callback will be called with a single goog.net.jsloader.Error\n *     parameter.\n */\ngoog.net.jsloader.safeLoadAndVerify = function(\n    trustedUri, verificationObjName, options) {\n  // Define the global objects variable.\n  if (!goog.global[goog.net.jsloader.GLOBAL_VERIFY_OBJS_]) {\n    goog.global[goog.net.jsloader.GLOBAL_VERIFY_OBJS_] = {};\n  }\n  var verifyObjs = goog.global[goog.net.jsloader.GLOBAL_VERIFY_OBJS_];\n  var uri = goog.html.TrustedResourceUrl.unwrap(trustedUri);\n\n  // Verify that the expected object does not exist yet.\n  if (verifyObjs[verificationObjName] !== undefined) {\n    // TODO(user): Error or reset variable?\n    return goog.async.Deferred.fail(\n        new goog.net.jsloader.Error(\n            goog.net.jsloader.ErrorCode.VERIFY_OBJECT_ALREADY_EXISTS,\n            'Verification object ' + verificationObjName +\n                ' already defined.'));\n  }\n\n  // Send request to load the JavaScript.\n  var sendDeferred = goog.net.jsloader.safeLoad(trustedUri, options);\n\n  // Create a deferred object wrapping the send result.\n  var deferred =\n      new goog.async.Deferred(goog.bind(sendDeferred.cancel, sendDeferred));\n\n  // Call user back with object that was set by the script.\n  sendDeferred.addCallback(function() {\n    var result = verifyObjs[verificationObjName];\n    if (result !== undefined) {\n      deferred.callback(result);\n      delete verifyObjs[verificationObjName];\n    } else {\n      // Error: script was not loaded properly.\n      deferred.errback(\n          new goog.net.jsloader.Error(\n              goog.net.jsloader.ErrorCode.VERIFY_ERROR, 'Script ' + uri +\n                  ' loaded, but verification object ' + verificationObjName +\n                  ' was not defined.'));\n    }\n  });\n\n  // Pass error to new deferred object.\n  sendDeferred.addErrback(function(error) {\n    if (verifyObjs[verificationObjName] !== undefined) {\n      delete verifyObjs[verificationObjName];\n    }\n    deferred.errback(error);\n  });\n\n  return deferred;\n};\n\n\n/**\n * Gets the DOM element under which we should add new script elements.\n * How? Take the first head element, and if not found take doc.documentElement,\n * which always exists.\n *\n * @param {!HTMLDocument} doc The relevant document.\n * @return {!Element} The script parent element.\n * @private\n */\ngoog.net.jsloader.getScriptParentElement_ = function(doc) {\n  var headElements = goog.dom.getElementsByTagName(goog.dom.TagName.HEAD, doc);\n  if (!headElements || goog.array.isEmpty(headElements)) {\n    return doc.documentElement;\n  } else {\n    return headElements[0];\n  }\n};\n\n\n/**\n * Cancels a given request.\n * @this {{script_: Element, timeout_: number}} The request context.\n * @private\n */\ngoog.net.jsloader.cancel_ = function() {\n  var request = this;\n  if (request && request.script_) {\n    var scriptNode = request.script_;\n    if (scriptNode && scriptNode.tagName == goog.dom.TagName.SCRIPT) {\n      goog.net.jsloader.cleanup_(scriptNode, true, request.timeout_);\n    }\n  }\n};\n\n\n/**\n * Removes the script node and the timeout.\n * @param {Node} scriptNode The node to be cleaned up.\n * @param {boolean} removeScriptNode If true completely remove the script node.\n * @param {?number=} opt_timeout The timeout handler to cleanup.\n * @private\n * @suppress {strictMissingProperties} Part of the go/strict_warnings_migration\n */\ngoog.net.jsloader.cleanup_ = function(\n    scriptNode, removeScriptNode, opt_timeout) {\n  if (opt_timeout != null) {\n    goog.global.clearTimeout(opt_timeout);\n  }\n\n  scriptNode.onload = goog.nullFunction;\n  scriptNode.onerror = goog.nullFunction;\n  scriptNode.onreadystatechange = goog.nullFunction;\n\n  // Do this after a delay (removing the script node of a running script can\n  // confuse older IEs).\n  if (removeScriptNode) {\n    window.setTimeout(function() { goog.dom.removeNode(scriptNode); }, 0);\n  }\n};\n\n\n/**\n * Possible error codes for jsloader.\n * @enum {number}\n */\ngoog.net.jsloader.ErrorCode = {\n  LOAD_ERROR: 0,\n  TIMEOUT: 1,\n  VERIFY_ERROR: 2,\n  VERIFY_OBJECT_ALREADY_EXISTS: 3,\n};\n\n\n\n/**\n * A jsloader error.\n *\n * @param {goog.net.jsloader.ErrorCode} code The error code.\n * @param {string=} opt_message Additional message.\n * @constructor\n * @extends {goog.debug.Error}\n * @final\n */\ngoog.net.jsloader.Error = function(code, opt_message) {\n  var msg = 'Jsloader error (code #' + code + ')';\n  if (opt_message) {\n    msg += ': ' + opt_message;\n  }\n  goog.net.jsloader.Error.base(this, 'constructor', msg);\n\n  /**\n   * The code for this error.\n   *\n   * @type {goog.net.jsloader.ErrorCode}\n   */\n  this.code = code;\n};\ngoog.inherits(goog.net.jsloader.Error, goog.debug.Error);\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Error codes shared between goog.net.IframeIo and\n * goog.net.XhrIo.\n */\n\ngoog.provide('goog.net.ErrorCode');\n\n\n/**\n * Error codes\n * @enum {number}\n */\ngoog.net.ErrorCode = {\n\n  /**\n   * There is no error condition.\n   */\n  NO_ERROR: 0,\n\n  /**\n   * The most common error from iframeio, unfortunately, is that the browser\n   * responded with an error page that is classed as a different domain. The\n   * situations, are when a browser error page  is shown -- 404, access denied,\n   * DNS failure, connection reset etc.)\n   *\n   */\n  ACCESS_DENIED: 1,\n\n  /**\n   * Currently the only case where file not found will be caused is when the\n   * code is running on the local file system and a non-IE browser makes a\n   * request to a file that doesn't exist.\n   */\n  FILE_NOT_FOUND: 2,\n\n  /**\n   * If Firefox shows a browser error page, such as a connection reset by\n   * server or access denied, then it will fail silently without the error or\n   * load handlers firing.\n   */\n  FF_SILENT_ERROR: 3,\n\n  /**\n   * Custom error provided by the client through the error check hook.\n   */\n  CUSTOM_ERROR: 4,\n\n  /**\n   * Exception was thrown while processing the request.\n   */\n  EXCEPTION: 5,\n\n  /**\n   * The Http response returned a non-successful http status code.\n   */\n  HTTP_ERROR: 6,\n\n  /**\n   * The request was aborted.\n   */\n  ABORT: 7,\n\n  /**\n   * The request timed out.\n   */\n  TIMEOUT: 8,\n\n  /**\n   * The resource is not available offline.\n   */\n  OFFLINE: 9,\n};\n\n\n/**\n * Returns a friendly error message for an error code. These messages are for\n * debugging and are not localized.\n * @param {goog.net.ErrorCode} errorCode An error code.\n * @return {string} A message for debugging.\n */\ngoog.net.ErrorCode.getDebugMessage = function(errorCode) {\n  switch (errorCode) {\n    case goog.net.ErrorCode.NO_ERROR:\n      return 'No Error';\n\n    case goog.net.ErrorCode.ACCESS_DENIED:\n      return 'Access denied to content document';\n\n    case goog.net.ErrorCode.FILE_NOT_FOUND:\n      return 'File not found';\n\n    case goog.net.ErrorCode.FF_SILENT_ERROR:\n      return 'Firefox silently errored';\n\n    case goog.net.ErrorCode.CUSTOM_ERROR:\n      return 'Application custom error';\n\n    case goog.net.ErrorCode.EXCEPTION:\n      return 'An exception occurred';\n\n    case goog.net.ErrorCode.HTTP_ERROR:\n      return 'Http response at 400 or 500 level';\n\n    case goog.net.ErrorCode.ABORT:\n      return 'Request was aborted';\n\n    case goog.net.ErrorCode.TIMEOUT:\n      return 'Request timed out';\n\n    case goog.net.ErrorCode.OFFLINE:\n      return 'The resource is not available offline';\n\n    default:\n      return 'Unrecognized error code';\n  }\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines fireauth.iframeclient.IframeWrapper used to communicate\n * with the hidden iframe to detect Auth events.\n */\n\ngoog.provide('fireauth.iframeclient.IframeWrapper');\n\ngoog.require('fireauth.util');\ngoog.require('goog.Promise');\ngoog.require('goog.html.TrustedResourceUrl');\ngoog.require('goog.net.jsloader');\ngoog.require('goog.string.Const');\n\n\n/**\n * Defines the hidden iframe wrapper for cross origin communications.\n * @param {string} url The hidden iframe src URL.\n * @constructor\n */\nfireauth.iframeclient.IframeWrapper = function(url) {\n  /** @private {string} The hidden iframe URL. */\n  this.url_ = url;\n\n  /**\n   * @type {?gapi.iframes.Iframe}\n   * @private\n   */\n  this.iframe_ = null;\n\n  /** @private {!goog.Promise} A promise that resolves on iframe open. */\n  this.onIframeOpen_ = this.open_();\n};\n\n\n/**\n * @typedef {{\n *   type: string\n * }}\n */\nfireauth.iframeclient.IframeWrapper.Message;\n\n/**\n * Returns URL, src of the hidden iframe.\n * @return {string}\n * @private\n */\nfireauth.iframeclient.IframeWrapper.prototype.getPath_ = function() {\n  return this.url_;\n};\n\n\n/**\n * @return {!goog.Promise} The promise that resolves when the iframe is ready.\n */\nfireauth.iframeclient.IframeWrapper.prototype.onReady = function() {\n  return this.onIframeOpen_;\n};\n\n\n/**\n * Returns options used to open the iframe.\n * @return {!gapi.iframes.OptionsBag}\n * @private\n */\nfireauth.iframeclient.IframeWrapper.prototype.getOptions_ = function() {\n  var options = /** @type {!gapi.iframes.OptionsBag} */ ({\n    'where': document.body,\n    'url': this.getPath_(),\n    'messageHandlersFilter': /** @type {!gapi.iframes.IframesFilter} */ (\n        fireauth.util.getObjectRef(\n            'gapi.iframes.CROSS_ORIGIN_IFRAMES_FILTER')),\n    'attributes': {\n      'style': {\n        'position': 'absolute',\n        'top': '-100px',\n        'width': '1px',\n        'height': '1px'\n      }\n    },\n    'dontclear': true\n  });\n  return options;\n};\n\n\n/**\n * Opens an iframe.\n * @return {!goog.Promise} A promise that resolves on successful iframe open.\n * @private\n */\nfireauth.iframeclient.IframeWrapper.prototype.open_ = function() {\n  var self = this;\n  return fireauth.iframeclient.IframeWrapper.loadGApiJs_().then(function() {\n    return new goog.Promise(function(resolve, reject) {\n      /**\n       * @param {?gapi.iframes.Iframe} iframe The new opened iframe.\n       */\n      var onOpen = function(iframe) {\n        self.iframe_ = iframe;\n        self.iframe_.restyle({\n          // Prevent iframe from closing on mouse out.\n          'setHideOnLeave': false\n        });\n        // Confirm iframe is correctly loaded.\n        // To fallback on failure, set a timeout.\n        var networkErrorTimer = setTimeout(function() {\n          reject(new Error('Network Error'));\n        }, fireauth.iframeclient.IframeWrapper.PING_TIMEOUT_.get());\n        // Clear timer and resolve pending iframe ready promise.\n        var clearTimerAndResolve = function() {\n          clearTimeout(networkErrorTimer);\n          resolve();\n        };\n        // This returns an IThenable. However the reject part does not call\n        // when the iframe is not loaded.\n        iframe.ping(clearTimerAndResolve).then(\n            clearTimerAndResolve,\n            function(error) { reject(new Error('Network Error')); });\n      };\n      /** @type {function():!gapi.iframes.Context} */ (\n          fireauth.util.getObjectRef('gapi.iframes.getContext'))().open(\n              self.getOptions_(), onOpen);\n    });\n  });\n};\n\n\n/**\n * @param {!fireauth.iframeclient.IframeWrapper.Message} message to send.\n * @return {!goog.Promise<?Object>} The promise that resolve when message is\n *     sent.\n */\nfireauth.iframeclient.IframeWrapper.prototype.sendMessage = function(message) {\n  var self = this;\n  return this.onIframeOpen_.then(function() {\n    return new goog.Promise(function(resolve, reject) {\n      self.iframe_.send(\n          message['type'],\n          message,\n          resolve,\n          /** @type {!gapi.iframes.IframesFilter} */ (\n              fireauth.util.getObjectRef(\n                  'gapi.iframes.CROSS_ORIGIN_IFRAMES_FILTER')));\n\n    });\n  });\n};\n\n\n/**\n * Registers a listener to a post message.\n * @param {string} eventName The message to register for.\n * @param {gapi.iframes.MessageHandler} handler Message handler.\n */\nfireauth.iframeclient.IframeWrapper.prototype.registerEvent =\n    function(eventName, handler) {\n  var self = this;\n  this.onIframeOpen_.then(function() {\n    self.iframe_.register(\n        eventName,\n        /** @type {function(this:gapi.iframes.Iframe,\n         *                  *, gapi.iframes.Iframe): *}\n         */ (handler),\n        /** @type {!gapi.iframes.IframesFilter} */ (\n            fireauth.util.getObjectRef(\n                'gapi.iframes.CROSS_ORIGIN_IFRAMES_FILTER')));\n  });\n};\n\n\n/**\n * Unregisters a listener to a post message.\n * @param {string} eventName The message to unregister.\n * @param {gapi.iframes.MessageHandler} handler Message handler.\n */\nfireauth.iframeclient.IframeWrapper.prototype.unregisterEvent =\n    function(eventName, handler) {\n  var self = this;\n  this.onIframeOpen_.then(function() {\n    self.iframe_.unregister(\n        eventName,\n        /** @type {(function(this:gapi.iframes.Iframe,\n         *                   *, gapi.iframes.Iframe): *|undefined)}\n         */ (handler));\n  });\n};\n\n\n/** @private @const {!goog.string.Const} The GApi loader URL. */\nfireauth.iframeclient.IframeWrapper.GAPI_LOADER_SRC_ = goog.string.Const.from(\n    'https://apis.google.com/js/api.js?onload=%{onload}');\n\n\n/**\n * @private @const {!fireauth.util.Delay} The gapi.load network error timeout\n *     delay with units in ms.\n */\nfireauth.iframeclient.IframeWrapper.NETWORK_TIMEOUT_ =\n    new fireauth.util.Delay(30000, 60000);\n\n\n/**\n * @private @const {!fireauth.util.Delay} The iframe ping error timeout delay\n *     with units in ms.\n */\nfireauth.iframeclient.IframeWrapper.PING_TIMEOUT_ =\n    new fireauth.util.Delay(5000, 15000);\n\n\n/** @private {?goog.Promise} The cached GApi loader promise. */\nfireauth.iframeclient.IframeWrapper.cachedGApiLoader_ = null;\n\n\n/** Resets the cached GApi loader. */\nfireauth.iframeclient.IframeWrapper.resetCachedGApiLoader = function() {\n  fireauth.iframeclient.IframeWrapper.cachedGApiLoader_ = null;\n};\n\n\n\n/**\n * Loads the GApi client library if it is not loaded for gapi.iframes usage.\n * @return {!goog.Promise} A promise that resolves when gapi.iframes is loaded.\n * @private\n */\nfireauth.iframeclient.IframeWrapper.loadGApiJs_ = function() {\n  // If already pending or resolved, return the cached promise.\n  if (fireauth.iframeclient.IframeWrapper.cachedGApiLoader_) {\n    return fireauth.iframeclient.IframeWrapper.cachedGApiLoader_;\n  }\n  // If there is no cached promise, initialize a new one.\n  fireauth.iframeclient.IframeWrapper.cachedGApiLoader_ =\n      new goog.Promise(function(resolve, reject) {\n    // Function to run when gapi.load is ready.\n    var onGapiLoad = function() {\n      // The developer may have tried to previously run gapi.load and failed.\n      // Run this to fix that.\n      fireauth.util.resetUnloadedGapiModules();\n      var loader = /** @type {function(string, !Object)} */ (\n          fireauth.util.getObjectRef('gapi.load'));\n      loader('gapi.iframes', {\n        'callback': resolve,\n        'ontimeout': function() {\n          // The above reset may be sufficient, but having this reset after\n          // failure ensures that if the developer calls gapi.load after the\n          // connection is re-established and before another attempt to embed\n          // the iframe, it would work and would not be broken because of our\n          // failed attempt.\n          // Timeout when gapi.iframes.Iframe not loaded.\n          fireauth.util.resetUnloadedGapiModules();\n          reject(new Error('Network Error'));\n        },\n        'timeout': fireauth.iframeclient.IframeWrapper.NETWORK_TIMEOUT_.get()\n      });\n    };\n    if (fireauth.util.getObjectRef('gapi.iframes.Iframe')) {\n      // If gapi.iframes.Iframe available, resolve.\n      resolve();\n    } else if (fireauth.util.getObjectRef('gapi.load')) {\n      // Gapi loader ready, load gapi.iframes.\n      onGapiLoad();\n    } else {\n      // Create a new iframe callback when this is called so as not to overwrite\n      // any previous defined callback. This happens if this method is called\n      // multiple times in parallel and could result in the later callback\n      // overwriting the previous one. This would end up with a iframe\n      // timeout.\n      var cbName = '__iframefcb' +\n          Math.floor(Math.random() * 1000000).toString();\n      // GApi loader not available, dynamically load platform.js.\n      goog.global[cbName] = function() {\n        // GApi loader should be ready.\n        if (fireauth.util.getObjectRef('gapi.load')) {\n          onGapiLoad();\n        } else {\n          // Gapi loader failed, throw error.\n          reject(new Error('Network Error'));\n        }\n      };\n      // Build GApi loader.\n      var url = goog.html.TrustedResourceUrl.format(\n          fireauth.iframeclient.IframeWrapper.GAPI_LOADER_SRC_,\n          {'onload': cbName});\n      // Load GApi loader.\n      var result = goog.Promise.resolve(goog.net.jsloader.safeLoad(url));\n      result.thenCatch(function(error) {\n        // In case library fails to load, typically due to a network error,\n        // reset cached loader to null to force a refresh on a retrial.\n        reject(new Error('Network Error'));\n      });\n    }\n  }).thenCatch(function(error) {\n    // Reset cached promise to allow for retrial.\n    fireauth.iframeclient.IframeWrapper.cachedGApiLoader_ = null;\n    throw error;\n  });\n  return fireauth.iframeclient.IframeWrapper.cachedGApiLoader_;\n};\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines fireauth.iframeclient.IfcHandler used to communicate\n * with the serverless widget.\n */\n\ngoog.provide('fireauth.iframeclient.IfcHandler');\ngoog.provide('fireauth.iframeclient.IframeUrlBuilder');\ngoog.provide('fireauth.iframeclient.OAuthUrlBuilder');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.AuthEvent');\ngoog.require('fireauth.AuthProvider');\ngoog.require('fireauth.InvalidOriginError');\ngoog.require('fireauth.OAuthSignInHandler');\ngoog.require('fireauth.RpcHandler');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.constants');\ngoog.require('fireauth.iframeclient.IframeWrapper');\ngoog.require('fireauth.util');\ngoog.require('goog.Promise');\ngoog.require('goog.Timer');\ngoog.require('goog.Uri');\ngoog.require('goog.array');\ngoog.require('goog.object');\n\n\n/**\n * The OAuth handler and iframe prototcol.\n * @const {string}\n * @suppress {const|duplicate}\n */\nfireauth.iframeclient.SCHEME = 'https';\n\n\n\n/**\n * The OAuth handler and iframe port number.\n * @const {?number}\n * @suppress {const|duplicate}\n */\nfireauth.iframeclient.PORT_NUMBER = null;\n\n\n\n/**\n * The iframe URL builder used to build the iframe widget URL.\n * @param {string} authDomain The application authDomain.\n * @param {string} apiKey The API key.\n * @param {string} appName The App name.\n * @param {?fireauth.constants.EmulatorSettings=} emulatorConfig The emulator\n *     configuration.\n * @constructor\n */\nfireauth.iframeclient.IframeUrlBuilder = function(authDomain, apiKey, appName, emulatorConfig) {\n  /** @private {string} The application authDomain. */\n  this.authDomain_ = authDomain;\n  /** @private {string} The API key. */\n  this.apiKey_ = apiKey;\n  /** @private {string} The App name. */\n  this.appName_ = appName;\n  /**\n   * @private @const {?fireauth.constants.EmulatorSettings|undefined}\n   * The emulator configuration.\n   */\n  this.emulatorConfig_ = emulatorConfig;\n  /** @private {?string|undefined} The client version. */\n  this.v_ = null;\n  let uri;\n  if (this.emulatorConfig_) {\n    const emulatorUri = goog.Uri.parse(this.emulatorConfig_.url);\n    uri = goog.Uri.create(\n      emulatorUri.getScheme(),\n      null,\n      emulatorUri.getDomain(),\n      emulatorUri.getPort(),\n      '/emulator/auth/iframe',\n      null,\n      null);\n  } else {\n    uri = goog.Uri.create(\n      fireauth.iframeclient.SCHEME,\n      null,\n      this.authDomain_,\n      fireauth.iframeclient.PORT_NUMBER,\n      '/__/auth/iframe',\n      null,\n      null);\n  }\n  /**\n   * @private @const {!goog.Uri} The URI object used to build the iframe URL.\n   */\n  this.uri_ = uri;\n  this.uri_.setParameterValue('apiKey', this.apiKey_);\n  this.uri_.setParameterValue('appName', this.appName_);\n  /** @private {?string|undefined} The endpoint ID. */\n  this.endpointId_ = null;\n  /** @private {!Array<string>} The list of framework IDs. */\n  this.frameworks_ = [];\n};\n\n\n/**\n * Sets the client version.\n * @param {?string|undefined} v The client version.\n * @return {!fireauth.iframeclient.IframeUrlBuilder} The current iframe URL\n *     builder instance.\n */\nfireauth.iframeclient.IframeUrlBuilder.prototype.setVersion = function(v) {\n  this.v_ = v;\n  return this;\n};\n\n\n/**\n * Sets the endpoint ID.\n * @param {?string|undefined} eid The endpoint ID (staging, test Gaia, etc).\n * @return {!fireauth.iframeclient.IframeUrlBuilder} The current iframe URL\n *     builder instance.\n */\nfireauth.iframeclient.IframeUrlBuilder.prototype.setEndpointId = function(eid) {\n  this.endpointId_ = eid;\n  return this;\n};\n\n\n/**\n * Sets the list of frameworks to pass to the iframe.\n * @param {?Array<string>|undefined} frameworks The list of frameworks to log.\n * @return {!fireauth.iframeclient.IframeUrlBuilder} The current iframe URL\n *     builder instance.\n */\nfireauth.iframeclient.IframeUrlBuilder.prototype.setFrameworks =\n    function(frameworks) {\n  this.frameworks_ = goog.array.clone(frameworks || []);\n  return this;\n};\n\n\n/**\n * Modifes the URI with the relevant Auth provider parameters.\n * @return {string} The constructed OAuth URL string.\n * @override\n */\nfireauth.iframeclient.IframeUrlBuilder.prototype.toString = function() {\n  // Pass the client version if available.\n  if (this.v_) {\n    this.uri_.setParameterValue('v', this.v_);\n  } else {\n    this.uri_.removeParameter('v');\n  }\n  // Pass the endpoint ID if available.\n  if (this.endpointId_) {\n    this.uri_.setParameterValue('eid', this.endpointId_);\n  } else {\n    this.uri_.removeParameter('eid');\n  }\n  // Pass the list of frameworks if available.\n  if (this.frameworks_.length) {\n    this.uri_.setParameterValue('fw', this.frameworks_.join(','));\n  } else {\n    this.uri_.removeParameter('fw');\n  }\n  return this.uri_.toString();\n};\n\n\n\n/**\n * The OAuth URL builder used to build the OAuth handler widget URL.\n * @param {string} authDomain The application authDomain.\n * @param {string} apiKey The API key.\n * @param {string} appName The App name.\n * @param {string} authType The Auth operation type.\n * @param {!fireauth.AuthProvider} provider The Auth provider that the OAuth\n *     handler request is built to sign in to.\n * @param {?fireauth.constants.EmulatorSettings=} emulatorConfig The emulator\n *     configuration.\n * @constructor\n */\nfireauth.iframeclient.OAuthUrlBuilder =\n    function(authDomain, apiKey, appName, authType, provider, emulatorConfig) {\n  /** @private {string} The application authDomain. */\n  this.authDomain_ = authDomain;\n  /** @private {string} The API key. */\n  this.apiKey_ = apiKey;\n  /** @private {string} The App name. */\n  this.appName_ = appName;\n  /** @private {string} The Auth operation type. */\n  this.authType_ = authType;\n  /**\n   * @private @const {?fireauth.constants.EmulatorSettings|undefined}\n   * The emulator configuration.\n   */\n  this.emulatorConfig_ = emulatorConfig;\n  /**\n   * @private {?string|undefined} The redirect URL used in redirect operations.\n   */\n  this.redirectUrl_ = null;\n  /** @private {?string|undefined} The event ID. */\n  this.eventId_ = null;\n  /** @private {?string|undefined} The client version. */\n  this.v_ = null;\n  /**\n   * @private {!fireauth.AuthProvider} The Firebase Auth provider that the OAuth\n   *     handler request is built to sign in to.\n   */\n  this.provider_ = provider;\n  /** @private {?string|undefined} The endpoint ID. */\n  this.endpointId_ = null;\n  /** @private {?string|undefined} The tenant ID. */\n  this.tenantId_ = null;\n};\n\n\n/**\n * Sets the redirect URL.\n * @param {?string|undefined} redirectUrl The redirect URL used in redirect\n *     operations.\n * @return {!fireauth.iframeclient.OAuthUrlBuilder} The current OAuth URL\n *     builder instance.\n */\nfireauth.iframeclient.OAuthUrlBuilder.prototype.setRedirectUrl =\n    function(redirectUrl) {\n  this.redirectUrl_ = redirectUrl;\n  return this;\n};\n\n\n/**\n * Sets the event ID.\n * @param {?string|undefined} eventId The event ID.\n * @return {!fireauth.iframeclient.OAuthUrlBuilder} The current OAuth URL\n *     builder instance.\n */\nfireauth.iframeclient.OAuthUrlBuilder.prototype.setEventId = function(eventId) {\n  this.eventId_ = eventId;\n  return this;\n};\n\n\n/**\n * Sets the tenant ID.\n * @param {?string|undefined} tenantId The event ID.\n * @return {!fireauth.iframeclient.OAuthUrlBuilder} The current OAuth URL\n *     builder instance.\n */\nfireauth.iframeclient.OAuthUrlBuilder.prototype.setTenantId =\n    function(tenantId) {\n  this.tenantId_ = tenantId;\n  return this;\n};\n\n\n/**\n * Sets the client version.\n * @param {?string|undefined} v The client version.\n * @return {!fireauth.iframeclient.OAuthUrlBuilder} The current OAuth URL\n *     builder instance.\n */\nfireauth.iframeclient.OAuthUrlBuilder.prototype.setVersion = function(v) {\n  this.v_ = v;\n  return this;\n};\n\n\n/**\n * Sets the endpoint ID.\n * @param {?string|undefined} eid The endpoint ID (staging, test Gaia, etc).\n * @return {!fireauth.iframeclient.OAuthUrlBuilder} The current OAuth URL\n *     builder instance.\n */\nfireauth.iframeclient.OAuthUrlBuilder.prototype.setEndpointId = function(eid) {\n  this.endpointId_ = eid;\n  return this;\n};\n\n\n/**\n * Sets any additional optional parameters. This will overwrite any previously\n * set additional parameters.\n * @param {?Object<string, string>|undefined} additionalParams The optional\n *     additional parameters.\n * @return {!fireauth.iframeclient.OAuthUrlBuilder} The current OAuth URL\n *     builder instance.\n */\nfireauth.iframeclient.OAuthUrlBuilder.prototype.setAdditionalParameters =\n    function(additionalParams) {\n  this.additionalParams_ = goog.object.clone(additionalParams || null);\n  return this;\n};\n\n\n/**\n * Modifies the URI with the relevant Auth provider parameters.\n * @return {string} The constructed OAuth URL string.\n * @override\n */\nfireauth.iframeclient.OAuthUrlBuilder.prototype.toString = function () {\n  var uri;\n  if (this.emulatorConfig_) {\n    const emulatorUri = goog.Uri.parse(this.emulatorConfig_.url);\n    uri = goog.Uri.create(\n      emulatorUri.getScheme(),\n      null,\n      emulatorUri.getDomain(),\n      emulatorUri.getPort(),\n      '/emulator/auth/handler',\n      null,\n      null);\n  } else {\n    uri = goog.Uri.create(\n      fireauth.iframeclient.SCHEME,\n      null,\n      this.authDomain_,\n      fireauth.iframeclient.PORT_NUMBER,\n      '/__/auth/handler',\n      null,\n      null);\n  }\n  uri.setParameterValue('apiKey', this.apiKey_);\n  uri.setParameterValue('appName', this.appName_);\n  uri.setParameterValue('authType', this.authType_);\n\n  // Add custom parameters for OAuth1/OAuth2 providers.\n  if (this.provider_['isOAuthProvider']) {\n    // Set default language if available and no language already set.\n    /** @type {!fireauth.FederatedProvider} */ (this.provider_)\n        .setDefaultLanguage(this.getAuthLanguage_());\n    uri.setParameterValue('providerId', this.provider_['providerId']);\n    var customParameters = /** @type {!fireauth.FederatedProvider} */ (\n        this.provider_).getCustomParameters();\n    if (!goog.object.isEmpty(customParameters)) {\n      uri.setParameterValue(\n          'customParameters',\n          /** @type {string} */ (fireauth.util.stringifyJSON(customParameters))\n          );\n    }\n  }\n\n  // Add scopes for OAuth2 providers.\n  if (typeof this.provider_.getScopes === 'function') {\n    var scopes = this.provider_.getScopes();\n    if (scopes.length) {\n      uri.setParameterValue('scopes', scopes.join(','));\n    }\n  }\n\n  if (this.redirectUrl_) {\n    uri.setParameterValue('redirectUrl', this.redirectUrl_);\n  } else {\n    uri.removeParameter('redirectUrl');\n  }\n  if (this.eventId_) {\n    uri.setParameterValue('eventId', this.eventId_);\n  } else {\n    uri.removeParameter('eventId');\n  }\n  // Pass the client version if available.\n  if (this.v_) {\n    uri.setParameterValue('v', this.v_);\n  } else {\n    uri.removeParameter('v');\n  }\n  if (this.additionalParams_) {\n    for (var key in this.additionalParams_) {\n      if (this.additionalParams_.hasOwnProperty(key) &&\n          // Don't overwrite other existing parameters.\n          !uri.getParameterValue(key)) {\n        uri.setParameterValue(key, this.additionalParams_[key]);\n      }\n    }\n  }\n  // Pass the tenant ID if available.\n  if (this.tenantId_) {\n    uri.setParameterValue('tid', this.tenantId_);\n  } else {\n    uri.removeParameter('tid');\n  }\n  // Pass the endpoint ID if available.\n  if (this.endpointId_) {\n    uri.setParameterValue('eid', this.endpointId_);\n  } else {\n    uri.removeParameter('eid');\n  }\n  // Append any framework IDs to the handler URL to log in handler RPC requests.\n  var frameworks = this.getAuthFrameworks_();\n  if (frameworks.length) {\n    uri.setParameterValue('fw', frameworks.join(','));\n  }\n  return uri.toString();\n};\n\n\n/**\n * Returns the current Auth instance's language code.\n * @return {?string} The corresponding language code.\n * @private\n */\nfireauth.iframeclient.OAuthUrlBuilder.prototype.getAuthLanguage_ = function() {\n  try {\n    // Get the Auth instance for the current App identified by the App name.\n    // This could fail if, for example, the App instance was deleted.\n    return firebase['app'](this.appName_)['auth']().getLanguageCode();\n  } catch (e) {\n    return null;\n  }\n};\n\n\n/**\n * Returns the list of Firebase frameworks used for logging purposes.\n * @return {!Array<string>} The list of corresponding Firebase frameworks.\n * @private\n */\nfireauth.iframeclient.OAuthUrlBuilder.prototype.getAuthFrameworks_ =\n    function() {\n  return fireauth.iframeclient.OAuthUrlBuilder.getAuthFrameworksForApp_(\n      this.appName_);\n};\n\n\n/**\n * Returns the list of Firebase frameworks used for logging purposes\n * corresponding to the Firebase App name provided.\n * @param {string} appName The Firebase App name.\n * @return {!Array<string>} The list of corresponding Firebase frameworks.\n * @private\n */\nfireauth.iframeclient.OAuthUrlBuilder.getAuthFrameworksForApp_ =\n    function(appName) {\n  try {\n    // Get the Auth instance's list of Firebase framework IDs for the current\n    // App identified by the App name.\n    // This could fail if, for example, the App instance was deleted.\n    return firebase['app'](appName)['auth']().getFramework();\n  } catch (e) {\n    return [];\n  }\n};\n\n\n\n/**\n * Initializes the ifcHandler which provides the mechanism to listen to Auth\n * events on the hidden iframe.\n * @param {string} authDomain The firebase authDomain used to determine the\n *     OAuth helper page domain.\n * @param {string} apiKey The API key for sending backend Auth requests.\n * @param {string} appName The App ID for the Auth instance that triggered this\n *     request.\n * @param {?string=} opt_clientVersion The optional client version string.\n * @param {?string=} opt_endpointId The endpoint ID (staging, test Gaia, etc).\n * @param {?fireauth.constants.EmulatorSettings=} emulatorConfig The emulator\n *     configuration.\n * @constructor\n * @implements {fireauth.OAuthSignInHandler}\n */\nfireauth.iframeclient.IfcHandler = function(authDomain, apiKey, appName,\n    opt_clientVersion, opt_endpointId, emulatorConfig) {\n  /** @private {string} The Auth domain. */\n  this.authDomain_ = authDomain;\n  /** @private {string} The API key. */\n  this.apiKey_ = apiKey;\n  /** @private {string} The App name. */\n  this.appName_ = appName;\n  /**\n   * @private @const {?fireauth.constants.EmulatorSettings|undefined}\n   * The emulator configuration.\n   */\n  this.emulatorConfig_ = emulatorConfig;\n  /** @private {?string} The client version. */\n  this.clientVersion_ = opt_clientVersion || null;\n  /** @private {?string} The Auth endpoint ID. */\n  this.endpointId_ = opt_endpointId || null;\n  // Delay RPC handler and iframe URL initialization until needed to ensure\n  // logged frameworks are propagated to the iframe.\n  /** @private {?string} The full client version string. */\n  this.fullClientVersion_ = null;\n  /** @private {?string} The iframe URL. */\n  this.iframeUrl_ = null;\n  /** @private {?fireauth.RpcHandler} The RPC handler for provided API key. */\n  this.rpcHandler_ = null;\n  /**\n   * @private {!Array<!function(?fireauth.AuthEvent)>} The Auth event\n   *     listeners.\n   */\n  this.authEventListeners_ = [];\n  // Delay origin validator determination until needed, so the error is not\n  // thrown in the background. This will also prevent the getProjectConfig RPC\n  // until it is required.\n  /** @private {?goog.Promise} The origin validator. */\n  this.originValidator_ = null;\n  /** @private {?goog.Promise} The initialization promise. */\n  this.isInitialized_ = null;\n};\n\n\n/**\n * Validates the provided URL.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler used to validate the\n *     requested origin.\n * @param {string=} opt_origin The optional page origin. If not provided, the\n *     window.location.href value is used.\n * @return {!goog.Promise} The promise that resolves if the provided origin is\n *     valid.\n * @private\n */\nfireauth.iframeclient.IfcHandler.getOriginValidator_ =\n    function(rpcHandler, opt_origin) {\n  var origin = opt_origin || fireauth.util.getCurrentUrl();\n  return rpcHandler.getAuthorizedDomains().then(function(authorizedDomains) {\n    if (!fireauth.util.isAuthorizedDomain(authorizedDomains, origin)) {\n      throw new fireauth.InvalidOriginError(fireauth.util.getCurrentUrl());\n    }\n  });\n};\n\n\n/**\n * Initializes the iframe client wrapper.\n * @return {!goog.Promise} The promise that resolves on initialization.\n */\nfireauth.iframeclient.IfcHandler.prototype.initialize = function() {\n  // Already initialized.\n  if (this.isInitialized_) {\n    return this.isInitialized_;\n  }\n  var self = this;\n  this.isInitialized_ = fireauth.util.onDomReady().then(function() {\n    /**\n     * @private {!fireauth.iframeclient.IframeWrapper} The iframe wrapper\n     *     instance.\n     */\n    self.iframeWrapper_ = new fireauth.iframeclient.IframeWrapper(\n        self.getIframeUrl());\n    // Register all event listeners to Auth event messages sent from Auth\n    // iframe.\n    self.registerEvents_();\n  });\n  return this.isInitialized_;\n};\n\n\n/**\n * Waits for popup window to close. When closed start timeout listener for popup\n * pending promise. If in the process, it was detected that the iframe does not\n * support web storage, the popup is closed and the web storage unsupported\n * error is thrown.\n * @param {!Window} popupWin The popup window.\n * @param {!function(!fireauth.AuthError)} onError The on error callback.\n * @param {number} timeoutDuration The time to wait in ms after the popup is\n *     closed before triggering the popup closed by user error.\n * @return {!goog.Promise}\n * @override\n */\nfireauth.iframeclient.IfcHandler.prototype.startPopupTimeout =\n    function(popupWin, onError, timeoutDuration) {\n  // Expire pending timeout promise for popup operation.\n  var popupClosedByUserError = new fireauth.AuthError(\n      fireauth.authenum.Error.POPUP_CLOSED_BY_USER);\n  // If web storage is disabled in the iframe, expire popup timeout quickly with\n  // this error.\n  var webStorageNotSupportedError = new fireauth.AuthError(\n      fireauth.authenum.Error.WEB_STORAGE_UNSUPPORTED);\n  var self = this;\n  var isResolved = false;\n  // Wait for the iframe to be ready first.\n  return this.initializeAndWait().then(function() {\n    // We do not return isWebStorageSupported() to ensure that this is backward\n    // compatible.\n    // Pushing the following client changes before updating the iframe to\n    // respond to these events would continue to work.\n    // The downside is that the popup could be closed before this resolves.\n    // In that case, they would get an error that the popup was closed and not\n    // the error that web storage is not supported, though that is unlikely\n    // as isWebStorageSupported should execute faster than the popup timeout.\n    // If web storage is not supported in the iframe, fail quickly.\n    self.isWebStorageSupported().then(function(isSupported) {\n      if (!isSupported) {\n        // If not supported, close window.\n        if (popupWin) {\n          fireauth.util.closeWindow(popupWin);\n        }\n        onError(webStorageNotSupportedError);\n        isResolved = true;\n      }\n    });\n  }).thenCatch(function(error) {\n    // Ignore any possible error in iframe embedding.\n    // These types of errors will be handled in processPopup which will close\n    // the popup too if that happens.\n    return;\n  }).then(function() {\n    // Skip if already resolved.\n    if (isResolved) {\n      return;\n    }\n    // After the iframe is ready, wait for popup to close and then start timeout\n    // check.\n    return fireauth.util.onPopupClose(popupWin);\n  }).then(function() {\n    // Skip if already resolved.\n    if (isResolved) {\n      return;\n    }\n    return goog.Timer.promise(timeoutDuration).then(function() {\n      // If this is already resolved or rejected, this will do nothing.\n      onError(popupClosedByUserError);\n    });\n  });\n};\n\n\n/**\n * @return {boolean} Whether the handler should be initialized early.\n * @override\n */\nfireauth.iframeclient.IfcHandler.prototype.shouldBeInitializedEarly =\n    function() {\n  var ua = fireauth.util.getUserAgentString();\n  // Cannot run in the background (can't wait for iframe to be embedded\n  // before triggering popup redirect) and is Safari (can only detect\n  // localStorage in iframe via change event) => embed iframe ASAP.\n  // Do the same for mobile browsers on iOS devices as they use the same\n  // Safari implementation underneath.\n  return !fireauth.util.runsInBackground(ua) &&\n         !fireauth.util.iframeCanSyncWebStorage(ua);\n};\n\n\n/**\n * @return {boolean} Whether the sign-in handler in the current environment\n *     has volatile session storage.\n * @override\n */\nfireauth.iframeclient.IfcHandler.prototype.hasVolatileStorage = function() {\n  // Web environment with web storage enabled has stable sessionStorage.\n  return false;\n};\n\n\n/**\n * Processes the popup request. The popup instance must be provided externally\n * and on error, the requestor must close the window.\n * @param {?Window} popupWin The popup window reference.\n * @param {!fireauth.AuthEvent.Type} mode The Auth event type.\n * @param {!fireauth.AuthProvider} provider The Auth provider to sign in with.\n * @param {function()} onInitialize The function to call on initialization.\n * @param {function(*)} onError The function to call on error.\n * @param {string=} opt_eventId The optional event ID.\n * @param {boolean=} opt_alreadyRedirected Whether popup is already redirected\n *     to final destination.\n * @param {?string=} opt_tenantId The optional tenant ID.\n * @return {!goog.Promise} The popup window promise.\n * @override\n */\nfireauth.iframeclient.IfcHandler.prototype.processPopup = function(\n    popupWin,\n    mode,\n    provider,\n    onInitialize,\n    onError,\n    opt_eventId,\n    opt_alreadyRedirected,\n    opt_tenantId) {\n  // processPopup is failing since it tries to access popup win when tab can\n  // not run in background. For now bypass processPopup which runs\n  // additional origin check not accounted above. Besides, iframe will never\n  // hand result to parent if origin not whitelisted.\n  // Error thrown by browser: Unable to establish a connection with the\n  // popup. It may have been blocked by the browser.\n  // If popup is null, startPopupTimeout will catch it without having the\n  // above error getting triggered due to popup access from opener.\n\n  // Reject immediately if the popup is blocked.\n  if (!popupWin) {\n    return goog.Promise.reject(\n        new fireauth.AuthError(fireauth.authenum.Error.POPUP_BLOCKED));\n  }\n  // Already redirected and cannot run in the background, resolve quickly while\n  // initializing.\n  if (opt_alreadyRedirected && !fireauth.util.runsInBackground()) {\n    // Initialize first before resolving.\n    this.initializeAndWait().thenCatch(function(error) {\n      fireauth.util.closeWindow(popupWin);\n      onError(error);\n    });\n    onInitialize();\n    // Already redirected.\n    return goog.Promise.resolve();\n  }\n  // If origin validator not determined yet.\n  if (!this.originValidator_) {\n    this.originValidator_ =\n        fireauth.iframeclient.IfcHandler.getOriginValidator_(\n            this.getRpcHandler_());\n  }\n  var self = this;\n  return this.originValidator_.then(function() {\n    // After origin validation, wait for iframe to be ready before redirecting.\n    var onReady = self.initializeAndWait().thenCatch(function(error) {\n      fireauth.util.closeWindow(popupWin);\n      onError(error);\n      throw error;\n    });\n    onInitialize();\n    return onReady;\n  }).then(function() {\n    // Popup and redirect operations work for OAuth providers only.\n    fireauth.AuthProvider.checkIfOAuthSupported(provider);\n    // Already redirected to intended destination, no need to redirect again.\n    if (opt_alreadyRedirected) {\n      return;\n    }\n    var oauthHelperWidgetUrl =\n        fireauth.iframeclient.IfcHandler.getOAuthHelperWidgetUrl(\n            self.authDomain_,\n            self.apiKey_,\n            self.appName_,\n            mode,\n            provider,\n            null,\n            opt_eventId,\n            self.clientVersion_,\n            undefined,\n            self.endpointId_,\n            opt_tenantId,\n            self.emulatorConfig_);\n    // Redirect popup to OAuth helper widget URL.\n    fireauth.util.goTo(oauthHelperWidgetUrl, /** @type {!Window} */ (popupWin));\n  }).thenCatch(function(e) {\n    // Force another origin validation.\n    if (e.code == 'auth/network-request-failed') {\n      self.originValidator_ = null;\n    }\n    throw e;\n  });\n};\n\n\n/**\n * @return {!fireauth.RpcHandler} The RPC handler instance with the relevant\n *     endpoints, version and frameworks.\n * @private\n */\nfireauth.iframeclient.IfcHandler.prototype.getRpcHandler_ = function() {\n  if (!this.rpcHandler_) {\n    this.fullClientVersion_ = this.clientVersion_ ?\n        fireauth.util.getClientVersion(\n            fireauth.util.ClientImplementation.JSCORE,\n            this.clientVersion_,\n            fireauth.iframeclient.OAuthUrlBuilder.getAuthFrameworksForApp_(\n                this.appName_)) :\n        null;\n    this.rpcHandler_ = new fireauth.RpcHandler(\n        this.apiKey_,\n        // Get the client Auth endpoint used.\n        fireauth.constants.getEndpointConfig(this.endpointId_),\n        this.fullClientVersion_);\n    if (this.emulatorConfig_) {\n        this.rpcHandler_.updateEmulatorConfig(this.emulatorConfig_);\n    }\n  }\n  return this.rpcHandler_;\n};\n\n\n/**\n * Processes the redirect request.\n * @param {!fireauth.AuthEvent.Type} mode The Auth event type.\n * @param {!fireauth.AuthProvider} provider The Auth provider to sign in with.\n * @param {?string=} opt_eventId The optional event ID.\n * @param {?string=} opt_tenantId The optional tenant ID.\n * @return {!goog.Promise}\n * @override\n */\nfireauth.iframeclient.IfcHandler.prototype.processRedirect =\n    function(mode, provider, opt_eventId, opt_tenantId) {\n  // If origin validator not determined yet.\n  if (!this.originValidator_) {\n    this.originValidator_ =\n        fireauth.iframeclient.IfcHandler.getOriginValidator_(\n            this.getRpcHandler_());\n  }\n  var self = this;\n  // Make sure origin is validated.\n  return this.originValidator_.then(function() {\n    fireauth.AuthProvider.checkIfOAuthSupported(provider);\n    var oauthHelperWidgetUrl =\n        fireauth.iframeclient.IfcHandler.getOAuthHelperWidgetUrl(\n            self.authDomain_,\n            self.apiKey_,\n            self.appName_,\n            mode,\n            provider,\n            fireauth.util.getCurrentUrl(),\n            opt_eventId,\n            self.clientVersion_,\n            undefined,\n            self.endpointId_,\n            opt_tenantId,\n            self.emulatorConfig_);\n    // Redirect to OAuth helper widget URL.\n    fireauth.util.goTo(oauthHelperWidgetUrl);\n  }).thenCatch(function(e) {\n    // Force another origin validation on network errors.\n    if (e.code == 'auth/network-request-failed') {\n      self.originValidator_ = null;\n    }\n    throw e;\n  });\n};\n\n\n/** @return {string} The iframe URL. */\nfireauth.iframeclient.IfcHandler.prototype.getIframeUrl = function() {\n  if (!this.iframeUrl_) {\n    this.iframeUrl_ = fireauth.iframeclient.IfcHandler.getAuthIframeUrl(\n      this.authDomain_,\n      this.apiKey_,\n      this.appName_,\n      this.clientVersion_,\n      this.endpointId_,\n      fireauth.iframeclient.OAuthUrlBuilder.getAuthFrameworksForApp_(\n        this.appName_),\n      this.emulatorConfig_);\n  }\n  return this.iframeUrl_;\n};\n\n\n/**\n * @return {!goog.Promise} The promise that resolves when the iframe is ready.\n * @override\n */\nfireauth.iframeclient.IfcHandler.prototype.initializeAndWait = function() {\n  // Initialize if not initialized yet.\n  var self = this;\n  return this.initialize().then(function() {\n    return self.iframeWrapper_.onReady();\n  }).thenCatch(function(error) {\n    // Reset origin validator.\n    self.originValidator_ = null;\n    // Reject iframe ready promise with network error.\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.NETWORK_REQUEST_FAILED);\n  });\n};\n\n\n/**\n * @return {boolean} Whether the handler will unload the current page on\n *     redirect operations.\n * @override\n */\nfireauth.iframeclient.IfcHandler.prototype.unloadsOnRedirect = function() {\n  return true;\n};\n\n\n/**\n * @param {string} authDomain The Firebase authDomain used to determine the\n *     OAuth helper page domain.\n * @param {string} apiKey The API key for sending backend Auth requests.\n * @param {string} appName The App ID for the Auth instance that triggered this\n *     request.\n * @param {?string=} opt_clientVersion The optional client version string.\n * @param {?string=} opt_endpointId The endpoint ID (staging, test Gaia, etc).\n * @param {?Array<string>=} opt_frameworks The optional list of framework IDs.\n * @param {?fireauth.constants.EmulatorSettings=} emulatorConfig The emulator\n *     configuration.\n * @return {string} The data iframe src URL.\n */\nfireauth.iframeclient.IfcHandler.getAuthIframeUrl = function(authDomain, apiKey,\n    appName, opt_clientVersion, opt_endpointId, opt_frameworks, emulatorConfig) {\n  // OAuth helper iframe URL.\n  var builder = new fireauth.iframeclient.IframeUrlBuilder(\n      authDomain, apiKey, appName, emulatorConfig);\n  return builder\n      .setVersion(opt_clientVersion)\n      .setEndpointId(opt_endpointId)\n      .setFrameworks(opt_frameworks)\n      .toString();\n};\n\n\n/**\n * @param {string} authDomain The Firebase authDomain used to determine the\n *     OAuth helper page domain.\n * @param {string} apiKey The API key for sending backend Auth requests.\n * @param {string} appName The App ID for the Auth instance that triggered this\n *     request.\n * @param {string} authType The type of operation that depends on OAuth sign in.\n * @param {!fireauth.AuthProvider} provider The provider to sign in to.\n * @param {?string=} opt_redirectUrl The optional URL to redirect to on OAuth\n *     sign in completion.\n * @param {?string=} opt_eventId The optional event ID to identify on receipt.\n * @param {?string=} opt_clientVersion The optional client version string.\n * @param {?Object<string, string>=} opt_additionalParams The optional\n *     additional parameters.\n * @param {?string=} opt_endpointId The endpoint ID (staging, test Gaia, etc).\n * @param {?string=} opt_tenantId The optional tenant ID.\n * @param {?fireauth.constants.EmulatorSettings=} emulatorConfig The emulator\n *     configuration.\n * @return {string} The OAuth helper widget URL.\n */\nfireauth.iframeclient.IfcHandler.getOAuthHelperWidgetUrl = function(\n    authDomain,\n    apiKey,\n    appName,\n    authType,\n    provider,\n    opt_redirectUrl,\n    opt_eventId,\n    opt_clientVersion,\n    opt_additionalParams,\n    opt_endpointId,\n    opt_tenantId,\n    emulatorConfig) {\n  // OAuth helper widget URL.\n  var builder = new fireauth.iframeclient.OAuthUrlBuilder(\n      authDomain, apiKey, appName, authType, provider, emulatorConfig);\n  return builder\n      .setRedirectUrl(opt_redirectUrl)\n      .setEventId(opt_eventId)\n      .setVersion(opt_clientVersion)\n      .setAdditionalParameters(opt_additionalParams)\n      .setEndpointId(opt_endpointId)\n      .setTenantId(opt_tenantId)\n      .toString();\n};\n\n\n/**\n * Post message receiver event names.\n * @enum {string}\n */\nfireauth.iframeclient.IfcHandler.ReceiverEvent = {\n  AUTH_EVENT: 'authEvent'\n};\n\n\n/**\n * Post message sender event names.\n * @enum {string}\n */\nfireauth.iframeclient.IfcHandler.SenderEvent = {\n  WEB_STORAGE_SUPPORT_EVENT: 'webStorageSupport'\n};\n\n\n/**\n * Post message response field names.\n * @enum {string}\n */\nfireauth.iframeclient.IfcHandler.Response = {\n  STATUS: 'status',\n  AUTH_EVENT: 'authEvent',\n  WEB_STORAGE_SUPPORT: 'webStorageSupport'\n};\n\n\n/**\n * Post message status values.\n * @enum {string}\n */\nfireauth.iframeclient.IfcHandler.Status = {\n  ACK: 'ACK',\n  ERROR: 'ERROR'\n};\n\n\n/**\n * Registers all event listeners.\n * @private\n */\nfireauth.iframeclient.IfcHandler.prototype.registerEvents_ = function() {\n  // Should be run in initialization.\n  if (!this.iframeWrapper_) {\n    throw new Error('IfcHandler must be initialized!');\n  }\n  var self = this;\n  // Listen to Auth change events emitted from iframe.\n  this.iframeWrapper_.registerEvent(\n      fireauth.iframeclient.IfcHandler.ReceiverEvent.AUTH_EVENT,\n      function(response) {\n        var resolveResponse = {};\n        if (response &&\n            response[fireauth.iframeclient.IfcHandler.Response.AUTH_EVENT]) {\n          var isHandled = false;\n          // Get Auth event (plain object).\n          var authEvent = fireauth.AuthEvent.fromPlainObject(\n              response[fireauth.iframeclient.IfcHandler.Response.AUTH_EVENT]);\n          // Trigger Auth change on all listeners.\n          for (var i = 0; i < self.authEventListeners_.length; i++) {\n            isHandled = self.authEventListeners_[i](authEvent) || isHandled;\n          }\n          // Return ack response to notify sender of success.\n          resolveResponse = {};\n          resolveResponse[fireauth.iframeclient.IfcHandler.Response.STATUS] =\n              isHandled ? fireauth.iframeclient.IfcHandler.Status.ACK :\n                  fireauth.iframeclient.IfcHandler.Status.ERROR;\n          return goog.Promise.resolve(resolveResponse);\n        }\n        // Return error status if the response is invalid.\n        resolveResponse[fireauth.iframeclient.IfcHandler.Response.STATUS] =\n            fireauth.iframeclient.IfcHandler.Status.ERROR;\n        return goog.Promise.resolve(resolveResponse);\n      });\n};\n\n\n/**\n * @return {!goog.Promise<boolean>} Whether web storage is supported in the\n *     iframe.\n */\nfireauth.iframeclient.IfcHandler.prototype.isWebStorageSupported = function() {\n  var webStorageSupportEvent =\n      fireauth.iframeclient.IfcHandler.SenderEvent.WEB_STORAGE_SUPPORT_EVENT;\n  var message = {\n    'type': webStorageSupportEvent\n  };\n  var self = this;\n  // Initialize if not initialized yet.\n  return this.initialize().then(function() {\n    return self.iframeWrapper_.sendMessage(message);\n  }).then(function(response) {\n    // Parse the response and return the passed web storage support status.\n    var key = fireauth.iframeclient.IfcHandler.Response.WEB_STORAGE_SUPPORT;\n    if (response &&\n        response.length &&\n        typeof response[0][key] !== 'undefined') {\n      return response[0][key];\n    }\n    // Internal error.\n    throw new Error;\n  });\n};\n\n\n/**\n * @param {!function(?fireauth.AuthEvent):boolean} listener The Auth event\n *     listener to add.\n * @override\n */\nfireauth.iframeclient.IfcHandler.prototype.addAuthEventListener =\n    function(listener) {\n  this.authEventListeners_.push(listener);\n};\n\n\n/**\n * @param {!function(?fireauth.AuthEvent):boolean} listener The Auth event\n *     listener to remove.\n * @override\n */\nfireauth.iframeclient.IfcHandler.prototype.removeAuthEventListener =\n    function(listener) {\n  goog.array.removeAllIf(this.authEventListeners_, function(ele) {\n    return ele == listener;\n  });\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\ngoog.provide('fireauth.storage.AsyncStorage');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.storage.Storage');\ngoog.require('fireauth.util');\ngoog.require('goog.Promise');\n\n\n/**\n * AsyncStorage provides an interface to the React Native AsyncStorage API.\n * @param {!Object=} opt_asyncStorage The AsyncStorage API. If not provided\n *     this method will attempt to fetch an implementation from\n *     firebase.INTERNAL.reactNative.\n * @constructor\n * @implements {fireauth.storage.Storage}\n * @see https://facebook.github.io/react-native/docs/asyncstorage.html\n */\nfireauth.storage.AsyncStorage = function(opt_asyncStorage) {\n  /**\n   * The underlying storage instance for persistent data.\n   * @private\n   */\n  this.storage_ =\n      opt_asyncStorage || (firebase.INTERNAL['reactNative'] &&\n                           firebase.INTERNAL['reactNative']['AsyncStorage']);\n\n  if (!this.storage_) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR,\n        'The React Native compatibility library was not found.');\n  }\n  /** @public {string} The storage type identifier. */\n  this.type = fireauth.storage.Storage.Type.ASYNC_STORAGE;\n};\n\n\n/**\n * Retrieves the value stored at the key.\n * @param {string} key\n * @return {!goog.Promise<*>}\n * @override\n */\nfireauth.storage.AsyncStorage.prototype.get = function(key) {\n  return goog.Promise.resolve(this.storage_['getItem'](key))\n      .then(function(val) {\n        return val && fireauth.util.parseJSON(val);\n      });\n};\n\n\n/**\n * Stores the value at the specified key.\n * @param {string} key\n * @param {*} value\n * @return {!goog.Promise<void>}\n * @override\n */\nfireauth.storage.AsyncStorage.prototype.set = function(key, value) {\n  return goog.Promise.resolve(\n      this.storage_['setItem'](key, fireauth.util.stringifyJSON(value)));\n};\n\n\n/**\n * Removes the value at the specified key.\n * @param {string} key\n * @return {!goog.Promise<void>}\n * @override\n */\nfireauth.storage.AsyncStorage.prototype.remove = function(key) {\n  return goog.Promise.resolve(this.storage_['removeItem'](key));\n};\n\n\n/**\n * Does nothing. AsyncStorage does not support storage events,\n * @param {function(!goog.events.BrowserEvent)} listener The storage event\n *     listener.\n * @override\n */\nfireauth.storage.AsyncStorage.prototype.addStorageListener = function(\n    listener) {};\n\n\n/**\n * Does nothing. AsyncStorage does not support storage events,\n * @param {function(!goog.events.BrowserEvent)} listener The storage event\n *     listener.\n * @override\n */\nfireauth.storage.AsyncStorage.prototype.removeStorageListener = function(\n    listener) {};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\ngoog.provide('fireauth.storage.Storage');\n\n\n\n/**\n * Defines a generic interface to storage APIs across platforms.\n * @interface\n */\nfireauth.storage.Storage = function() {};\n\n\n/**\n * Retrieves the value stored at the key.\n * @param {string} key\n * @return {!goog.Promise<*>}\n */\nfireauth.storage.Storage.prototype.get = function(key) {};\n\n\n/**\n * Stores the value at the specified key.\n * @param {string} key\n * @param {*} value\n * @return {!goog.Promise<void>}\n */\nfireauth.storage.Storage.prototype.set = function(key, value) {};\n\n\n/**\n * Removes the value at the specified key.\n * @param {string} key\n * @return {!goog.Promise<void>}\n */\nfireauth.storage.Storage.prototype.remove = function(key) {};\n\n\n/**\n * Adds a listener to storage event change.\n * @param {function(!goog.events.BrowserEvent)|function(!Array<string>)}\n *     listener The storage event listener.\n */\nfireauth.storage.Storage.prototype.addStorageListener = function(listener) {};\n\n\n/**\n * Removes a listener to storage event change.\n * @param {function(!goog.events.BrowserEvent)|function(!Array<string>)}\n *     listener The storage event listener.\n */\nfireauth.storage.Storage.prototype.removeStorageListener = function(listener) {\n};\n\n\n/** @type {string} The storage type identifier. */\nfireauth.storage.Storage.prototype.type;\n\n\n/**\n * Enum for the identifier of the type of underlying storage.\n * @enum {string}\n */\nfireauth.storage.Storage.Type = {\n  ASYNC_STORAGE: 'asyncStorage',\n  IN_MEMORY: 'inMemory',\n  INDEXEDDB: 'indexedDB',\n  LOCAL_STORAGE: 'localStorage',\n  MOCK_STORAGE: 'mockStorage',\n  NULL_STORAGE: 'nullStorage',\n  SESSION_STORAGE: 'sessionStorage'\n};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the MessageChannel based wrapper for receiving\n * messages from other windows or workers.\n */\n\ngoog.provide('fireauth.messagechannel.Receiver');\n\ngoog.require('fireauth.messagechannel.Status');\ngoog.require('goog.Promise');\ngoog.require('goog.array');\ngoog.require('goog.object');\n\n\n/**\n * Initializes a channel to receive specific messages from a specified event\n * target.\n * Note receivers should not be manually instantiated. Instead `getInstance()`\n * should be used instead to get a receiver instance for a specified event\n * target.\n * @param {!EventTarget} eventTarget The event target to listen to.\n * @constructor\n */\nfireauth.messagechannel.Receiver = function(eventTarget) {\n  /**\n   * @const @private {!EventTarget} The messageChannel event target.\n   */\n  this.eventTarget_ = eventTarget;\n  /**\n   * @const @private {!Object.<string,\n   *                    !Array<function(string, *):!goog.Promise<?>|void>>}\n   *     This is the event type to handlers hash map. It is used to hold the\n   *     corresponding handlers for specified events.\n   */\n  this.eventHandlers_ = {};\n  /**\n   * @const @private {function(!Event)} The internal 'message' event handler\n   *     used to reroute the request to corresponding subscribed handlers.\n   */\n  this.messageEventHandler_ = goog.bind(this.handleEvent_, this);\n};\n\n\n/**\n * @param {!EventTarget} eventTarget The event target to check for.\n * @return {boolean} Whether the receiver is listening to the specified event\n *     target.\n */\nfireauth.messagechannel.Receiver.prototype.isListeningTo =\n    function(eventTarget) {\n  return this.eventTarget_ == eventTarget;\n};\n\n\n/**\n * @const @private {!Array<!fireauth.messagechannel.Receiver>} The list of all\n *     created `fireauth.messagechannel.Receiver` instances.\n */\nfireauth.messagechannel.Receiver.receivers_ = [];\n\n\n/**\n * Return a receiver instance for the specified event target. This is needed\n * since one instance can be available per event target. Otherwise receivers\n * could clobber each other.\n * @param {!EventTarget} eventTarget The event target to listen to.\n * @return {!fireauth.messagechannel.Receiver} The receiver instance for the\n *     specified event target.\n */\nfireauth.messagechannel.Receiver.getInstance = function(eventTarget) {\n  // The results are stored in an array since objects can't be keys for other\n  // objects. In addition, setting a unique property on an event target as a\n  // hash map key may not be allowed due to CORS restrictions.\n  var instance;\n  goog.array.forEach(\n      fireauth.messagechannel.Receiver.receivers_,\n      function(receiver) {\n        if (receiver.isListeningTo(eventTarget)) {\n          instance = receiver;\n        }\n      });\n  if (!instance) {\n    instance = new fireauth.messagechannel.Receiver(eventTarget);\n    fireauth.messagechannel.Receiver.receivers_.push(instance);\n  }\n  return instance;\n};\n\n\n/**\n * Handles a PostMessage event based on the following protocol:\n * <ul>\n * <li>When an event is first detected, check there is a subscribed handler.\n *     If not, do nothing as there could be other listeners.</li>\n * <li>If there is a subscribed event, reply with an ACK event to notify the\n *     sender that the event can be handled.</li>\n * <li>Trigger the subscribed handlers.</li>\n * <li>Reply again with the combined results of all subscribed handlers and\n *     return the response back.</li>\n * </ul>\n *\n * @param {!Event} event The PostMessage event to handle.\n * @private\n */\nfireauth.messagechannel.Receiver.prototype.handleEvent_ = function(event) {\n  // Respond to sender first with ack reply. This will let the client\n  // know that the service worker can handle this event.\n  var eventType = event.data['eventType'];\n  var eventId = event.data['eventId'];\n  var handlers = this.eventHandlers_[eventType];\n  if (handlers && handlers.length > 0) {\n    // Event can be handled.\n    event.ports[0].postMessage({\n      'status': fireauth.messagechannel.Status.ACK,\n      'eventId': eventId,\n      'eventType': eventType,\n      'response': null\n    });\n    var promises = [];\n    goog.array.forEach(handlers, function(handler) {\n      // Wrap in promise in case the handler doesn't return a promise.\n      promises.push(goog.Promise.resolve().then(function() {\n        return handler(event.origin, event.data['data']);\n      }));\n    });\n    // allSettled is more flexible as it executes all the promises passed and\n    // returns whether they succeeded or failed.\n    goog.Promise.allSettled(promises)\n        .then(function(result) {\n          // allResponse has the format:\n          // !Array<!{fulfilled: boolean, value: (*|undefined),\n          //          reason: (*|undefined)}>\n          // Respond to sender with ack reply.\n          // De-obfuscate the allSettled result.\n          var allResponses = [];\n          goog.array.forEach(result, function(item) {\n            allResponses.push({\n              'fulfilled': item.fulfilled,\n              'value': item.value,\n              // Error cannot be clone in postMessage.\n              'reason': item.reason ? item.reason.message : undefined\n            });\n          });\n          // Remove undefined fields.\n          goog.array.forEach(allResponses, function(item) {\n            for (var key in item) {\n              if (typeof item[key] === 'undefined') {\n                delete item[key];\n              }\n            }\n          });\n          event.ports[0].postMessage({\n            'status': fireauth.messagechannel.Status.DONE,\n            'eventId': eventId,\n            'eventType': eventType,\n            'response': allResponses\n          });\n        });\n  }\n  // Let unsupported events time out, as there could be external receivers\n  // that can handle them.\n};\n\n\n/**\n * Subscribes to events of the specified type.\n * @param {string} eventType The event type to listen to.\n * @param {function(string, *):!goog.Promise<?>|void} handler The async callback\n *     function to run when the event is triggered.\n */\nfireauth.messagechannel.Receiver.prototype.subscribe =\n    function(eventType, handler) {\n  if (goog.object.isEmpty(this.eventHandlers_)) {\n    this.eventTarget_.addEventListener('message', this.messageEventHandler_);\n  }\n  if (typeof this.eventHandlers_[eventType] === 'undefined') {\n    this.eventHandlers_[eventType] = [];\n  }\n  this.eventHandlers_[eventType].push(handler);\n};\n\n\n/**\n * Unsubscribes the specified handler from the specified event. If no handler\n * is specified, all handlers are unsubscribed.\n * @param {string} eventType The event type to unsubscribe from.\n * @param {?function(string, *):!goog.Promise<?>|void=} opt_handler The\n *     callback function to unsubscribe from the specified event type. If none\n *     is specified, all handlers are unsubscribed.\n */\nfireauth.messagechannel.Receiver.prototype.unsubscribe =\n    function(eventType, opt_handler) {\n  if (typeof this.eventHandlers_[eventType] !== 'undefined' && opt_handler) {\n    goog.array.removeAllIf(this.eventHandlers_[eventType], function(ele) {\n      return ele == opt_handler;\n    });\n    if (this.eventHandlers_[eventType].length == 0) {\n      delete this.eventHandlers_[eventType];\n    }\n  } else if (!opt_handler) {\n    // Unsubscribe all handlers for speficied event.\n    delete this.eventHandlers_[eventType];\n  }\n  if (goog.object.isEmpty(this.eventHandlers_)) {\n    this.eventTarget_.removeEventListener('message', this.messageEventHandler_);\n  }\n};\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines a local storage interface with an indexedDB\n * implementation to be used as a fallback with browsers that do not synchronize\n * local storage changes between different windows of the same origin.\n */\n\ngoog.provide('fireauth.storage.IndexedDB');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.messagechannel.Receiver');\ngoog.require('fireauth.messagechannel.Sender');\ngoog.require('fireauth.messagechannel.WorkerClientPostMessager');\ngoog.require('fireauth.storage.Storage');\ngoog.require('fireauth.util');\ngoog.require('goog.Promise');\ngoog.require('goog.Timer');\ngoog.require('goog.array');\n\n\n\n/**\n * Initialize an indexedDB local storage manager used to mimic local storage\n * using an indexedDB underlying implementation including the ability to listen\n * to storage changes by key similar to localstorage storage event.\n * @param {string} dbName The indexedDB database name where all local storage\n *     data is to be stored.\n * @param {string} objectStoreName The indexedDB object store name where all\n *     local storage data is to be stored.\n * @param {string} dataKeyPath The indexedDB object store index name used to key\n *     all local storage data.\n * @param {string} valueKeyPath The indexedDB object store value field for each\n *     entry.\n * @param {number} version The indexedDB database version number.\n * @param {?IDBFactory=} opt_indexedDB The optional IndexedDB factory object.\n * @implements {fireauth.storage.Storage}\n * @constructor\n */\nfireauth.storage.IndexedDB = function(\n    dbName,\n    objectStoreName,\n    dataKeyPath,\n    valueKeyPath,\n    version,\n    opt_indexedDB) {\n  // indexedDB not available, fail hard.\n  if (!fireauth.storage.IndexedDB.isAvailable()) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.WEB_STORAGE_UNSUPPORTED);\n  }\n  /**\n   * @const @private {string} The indexedDB database name where all local\n   *     storage data is to be stored.\n   */\n  this.dbName_ = dbName;\n  /**\n   * @const @private {string} The indexedDB object store name where all local\n   *     storage data is to be stored.\n   */\n  this.objectStoreName_ = objectStoreName;\n  /**\n   * @const @private {string} The indexedDB object store index name used to key\n   *     all local storage data.\n   */\n  this.dataKeyPath_ = dataKeyPath;\n  /**\n   * @const @private {string} The indexedDB object store value field for each\n   *     entry.\n   */\n  this.valueKeyPath_ = valueKeyPath;\n  /** @const @private {number} The indexedDB database version number. */\n  this.version_ = version;\n  /** @private {!Object.<string, *>} The local indexedDB map copy. */\n  this.localMap_ = {};\n  /**\n   * @private {!Array<function(!Array<string>)>} Listeners to storage events.\n   */\n  this.storageListeners_ = [];\n  /** @private {number} The indexedDB pending write operations tracker. */\n  this.pendingOpsTracker_ = 0;\n  /** @private {!IDBFactory} The indexedDB factory object. */\n  this.indexedDB_ = /** @type {!IDBFactory} */ (\n      opt_indexedDB || goog.global.indexedDB);\n  /** @public {string} The storage type identifier. */\n  this.type = fireauth.storage.Storage.Type.INDEXEDDB;\n  /**\n   * @private {?goog.Promise<void>} The pending polling promise for syncing\n   *     unprocessed indexedDB external changes.\n   */\n  this.poll_ = null;\n  /**\n   * @private {?number} The poll timer ID for syncing external indexedDB\n   *     changes.\n   */\n  this.pollTimerId_ = null;\n  /**\n   * @private {?fireauth.messagechannel.Receiver} The messageChannel receiver if\n   *     running from a serviceworker.\n   */\n  this.receiver_ = null;\n  /**\n   * @private {?fireauth.messagechannel.Sender} The messageChannel sender to\n   *     send keyChanged messages to the service worker from the client.\n   */\n  this.sender_ = null;\n  /**\n   * @private {boolean} Whether the service worker has a receiver for the\n   *     keyChanged events.\n   */\n  this.serviceWorkerReceiverAvailable_ = false;\n  /** @private {?ServiceWorker} The current active service worker. */\n  this.activeServiceWorker_ = null;\n  var scope = this;\n  if (fireauth.util.getWorkerGlobalScope()) {\n    this.receiver_ = fireauth.messagechannel.Receiver.getInstance(\n        /** @type {!WorkerGlobalScope} */ (\n            fireauth.util.getWorkerGlobalScope()));\n    // Listen to indexedDB changes.\n    this.receiver_.subscribe('keyChanged', function(origin, request) {\n      // Sync data.\n      return scope.sync_().then(function(keys) {\n        // Trigger listeners if unhandled changes are detected.\n        if (keys.length > 0) {\n          goog.array.forEach(\n              scope.storageListeners_,\n              function(listener) {\n                listener(keys);\n              });\n        }\n        // When this is false, it means the change was already\n        // detected and processed before the notification.\n        return {\n          'keyProcessed': goog.array.contains(keys, request['key'])\n        };\n      });\n    });\n    // Used to inform sender that service worker what events it supports.\n    this.receiver_.subscribe('ping', function(origin, request) {\n      return goog.Promise.resolve(['keyChanged']);\n    });\n  } else {\n    // Get active service worker when its available.\n    fireauth.util.getActiveServiceWorker()\n        .then(function(sw) {\n          scope.activeServiceWorker_ = sw;\n          if (sw) {\n            // Initialize the sender.\n            scope.sender_ = new fireauth.messagechannel.Sender(\n                new fireauth.messagechannel.WorkerClientPostMessager(sw));\n            // Ping the service worker to check what events they can handle.\n            // Use long timeout.\n            scope.sender_.send('ping', null, true)\n                .then(function(results) {\n                  // Check if keyChanged is supported.\n                  if (results[0]['fulfilled'] &&\n                      goog.array.contains(results[0]['value'], 'keyChanged')) {\n                    scope.serviceWorkerReceiverAvailable_ = true;\n                  }\n                })\n                .thenCatch(function(error) {\n                  // Ignore error.\n                });\n          }\n        });\n  }\n};\n\n\n\n/**\n * The indexedDB database name where all local storage data is to be stored.\n * @private @const {string}\n */\nfireauth.storage.IndexedDB.DB_NAME_ = 'firebaseLocalStorageDb';\n\n\n/**\n * The indexedDB object store name where all local storage data is to be stored.\n * @private @const {string}\n */\nfireauth.storage.IndexedDB.DATA_OBJECT_STORE_NAME_ = 'firebaseLocalStorage';\n\n\n/**\n * The indexedDB object store index name used to key all local storage data.\n * @private @const {string}\n */\nfireauth.storage.IndexedDB.DATA_KEY_PATH_ = 'fbase_key';\n\n\n/**\n * The indexedDB object store value field for each entry.\n * @private @const {string}\n */\nfireauth.storage.IndexedDB.VALUE_KEY_PATH_ = 'value';\n\n\n/**\n * The indexedDB database version number.\n * @private @const {number}\n */\nfireauth.storage.IndexedDB.VERSION_ = 1;\n\n\n/**\n * The indexedDB polling delay time in milliseconds.\n * @private @const {number}\n */\nfireauth.storage.IndexedDB.POLLING_DELAY_ = 800;\n\n\n/**\n * Maximum number of times to retry a transaction in the event the connection is\n * closed.\n * @private @const {number}\n */\nfireauth.storage.IndexedDB.TRANSACTION_RETRY_COUNT_ = 3;\n\n\n/**\n * The indexedDB polling stop error.\n * @private @const {string}\n */\nfireauth.storage.IndexedDB.STOP_ERROR_ = 'STOP_EVENT';\n\n\n\n/**\n * @return {!fireauth.storage.IndexedDB} The Firebase Auth indexedDB\n *     local storage manager.\n */\nfireauth.storage.IndexedDB.getFireauthManager = function() {\n  if (!fireauth.storage.IndexedDB.managerInstance_) {\n    fireauth.storage.IndexedDB.managerInstance_ =\n        new fireauth.storage.IndexedDB(\n            fireauth.storage.IndexedDB.DB_NAME_,\n            fireauth.storage.IndexedDB.DATA_OBJECT_STORE_NAME_,\n            fireauth.storage.IndexedDB.DATA_KEY_PATH_,\n            fireauth.storage.IndexedDB.VALUE_KEY_PATH_,\n            fireauth.storage.IndexedDB.VERSION_);\n  }\n  return fireauth.storage.IndexedDB.managerInstance_;\n};\n\n\n/**\n * Delete the indexedDB database.\n * @return {!goog.Promise<!IDBDatabase>} A promise that resolves on successful\n *     database deletion.\n * @private\n */\nfireauth.storage.IndexedDB.prototype.deleteDb_ = function() {\n  var self = this;\n  return new goog.Promise(function(resolve, reject) {\n    var request = self.indexedDB_.deleteDatabase(self.dbName_);\n    request.onsuccess = function(event) {\n      resolve();\n    };\n    request.onerror = function(event) {\n      reject(new Error(event.target.error));\n    };\n  });\n};\n\n\n/**\n * Initializes The indexedDB database, creates it if not already created and\n * opens it.\n * @return {!goog.Promise<!IDBDatabase>} A promise for the database object.\n * @private\n */\nfireauth.storage.IndexedDB.prototype.initializeDb_ = function() {\n  var self = this;\n  return new goog.Promise(function(resolve, reject) {\n    var request = self.indexedDB_.open(self.dbName_, self.version_);\n    request.onerror = function(event) {\n      // Suppress this from surfacing to browser console.\n      try {\n        event.preventDefault();\n      } catch (e) {}\n      reject(new Error(event.target.error));\n    };\n    request.onupgradeneeded = function(event) {\n      var db = event.target.result;\n      try {\n        db.createObjectStore(\n            self.objectStoreName_,\n            {\n              'keyPath': self.dataKeyPath_\n            });\n      } catch (e) {\n        reject(e);\n      }\n    };\n    request.onsuccess = function(event) {\n      var db = event.target.result;\n      // Strange bug that occurs in Firefox when multiple tabs are opened at the\n      // same time. The only way to recover seems to be deleting the database\n      // and re-initializing it.\n      // https://github.com/firebase/firebase-js-sdk/issues/634\n      if (!db.objectStoreNames.contains(self.objectStoreName_)) {\n        self.deleteDb_()\n            .then(function() {\n              return self.initializeDb_();\n            })\n            .then(function(newDb) {\n              resolve(newDb);\n            })\n            .thenCatch(function(e) {\n              reject(e);\n            });\n      } else {\n        resolve(db);\n      }\n    };\n  });\n};\n\n\n/**\n * Checks if indexedDB is initialized, if so, the callback is run, otherwise,\n * it waits for the db to initialize and then runs the callback function.\n * @return {!goog.Promise<!IDBDatabase>} A promise for the initialized indexedDB\n *     database.\n * @private\n */\nfireauth.storage.IndexedDB.prototype.initializeDbAndRun_ =\n    function() {\n  if (!this.initPromise_) {\n    this.initPromise_ = this.initializeDb_();\n  }\n  return this.initPromise_;\n};\n\n/**\n* Attempts to run a transaction, in the event of an error will re-initialize\n* the DB connection and retry a fixed number of times.\n* @param {function(!IDBDatabase): !goog.Promise<{T}>} transaction A method\n*     which performs a transactional operation on an IDBDatabase.\n* @template T \n* @return {!goog.Promise<T>}\n* @private\n*/\nfireauth.storage.IndexedDB.prototype.withRetry_ = function(transaction) {\n  let numAttempts = 0;\n  const attempt = (resolve, reject) => {\n    this.initializeDbAndRun_()\n      .then(transaction)\n      .then(resolve)\n      .thenCatch((error) => {\n        if (++numAttempts >\n          fireauth.storage.IndexedDB.TRANSACTION_RETRY_COUNT_) {\n          reject(error);\n          return;\n        }\n        return this.initializeDbAndRun_().then((db) => {\n          db.close();\n          this.initPromise_ = undefined;\n          return attempt(resolve, reject);\n        }).thenCatch((error) => {\n          // Make sure any errors caused by initializeDbAndRun_() or\n          // db.close() are caught as well and trigger a rejection. If at\n          // this point, we are probably in a private browsing context or\n          // environment that does not support indexedDB.\n          reject(error);\n        });\n      });\n  };\n  return new goog.Promise(attempt);\n}\n\n\n/**\n * @return {boolean} Whether indexedDB is available or not.\n */\nfireauth.storage.IndexedDB.isAvailable = function() {\n  try {\n    return !!goog.global['indexedDB'];\n  } catch (e) {\n    return false;\n  }\n};\n\n\n/**\n * Creates a reference for the local storage indexedDB object store and returns\n * it.\n * @param {!IDBTransaction} tx The IDB transaction instance.\n * @return {!IDBObjectStore} The indexedDB object store.\n * @private\n */\nfireauth.storage.IndexedDB.prototype.getDataObjectStore_ =\n    function(tx) {\n  return tx.objectStore(this.objectStoreName_);\n};\n\n\n/**\n * Creates an IDB transaction and returns it.\n * @param {!IDBDatabase} db The indexedDB instance.\n * @param {boolean} isReadWrite Whether the current indexedDB operation is a\n *     read/write operation or not.\n * @return {!IDBTransaction} The requested IDB transaction instance.\n * @private\n */\nfireauth.storage.IndexedDB.prototype.getTransaction_ =\n    function(db, isReadWrite) {\n  var tx = db.transaction(\n      [this.objectStoreName_],\n      isReadWrite ? 'readwrite' : 'readonly');\n  return tx;\n};\n\n\n/**\n * @param {!IDBRequest} request The IDB request instance.\n * @return {!goog.Promise} The promise to resolve on transaction completion.\n * @private\n */\nfireauth.storage.IndexedDB.prototype.onIDBRequest_ =\n    function(request) {\n  return new goog.Promise(function(resolve, reject) {\n    request.onsuccess = function(event) {\n      if (event && event.target) {\n        resolve(event.target.result);\n      } else {\n        resolve();\n      }\n    };\n    request.onerror = function(event) {\n      reject(event.target.error);\n    };\n  });\n};\n\n\n/**\n * Sets the item's identified by the key provided to the value passed. If the\n * item does not exist, it is created. An optional callback is run on success.\n * @param {string} key The storage key for the item to set. If the item exists,\n *     it is updated, otherwise created.\n * @param {*} value The value to store for the item to set.\n * @return {!goog.Promise<void>} A promise that resolves on operation success.\n * @override\n */\nfireauth.storage.IndexedDB.prototype.set = function(key, value) {\n  let isLocked = false;\n  return this\n    .withRetry_((db) => {\n      const objectStore =\n        this.getDataObjectStore_(this.getTransaction_(db, true));\n      return this.onIDBRequest_(objectStore.get(key));\n    })\n    .then((data) => {\n      return this.withRetry_((db) => {\n        const objectStore =\n          this.getDataObjectStore_(this.getTransaction_(db, true));\n        if (data) {\n          // Update the value(s) in the object that you want to change\n          data.value = value;\n          // Put this updated object back into the database.\n          return this.onIDBRequest_(objectStore.put(data));\n        }\n        this.pendingOpsTracker_++;\n        isLocked = true;\n        const obj = {};\n        obj[this.dataKeyPath_] = key;\n        obj[this.valueKeyPath_] = value;\n        return this.onIDBRequest_(objectStore.add(obj));\n      });\n    })\n    .then(() => {\n      // Save in local copy to avoid triggering false external event.\n      this.localMap_[key] = value;\n      // Announce change in key to service worker.\n      return this.notifySW_(key);\n    })\n    .thenAlways(() => {\n      if (isLocked) {\n        this.pendingOpsTracker_--;\n      }\n    });\n};\n\n\n/**\n * Notify the service worker of the indexeDB write operation.\n * Waits until the operation is processed.\n * @param {string} key The key which is changing.\n * @return {!goog.Promise<void>} A promise that resolves on delivery.\n * @private\n */\nfireauth.storage.IndexedDB.prototype.notifySW_ = function(key) {\n  // If sender is available.\n  // Run some sanity check to confirm no sw change occurred.\n  // For now, we support one service worker per page.\n  if (this.sender_ &&\n      this.activeServiceWorker_ &&\n      fireauth.util.getServiceWorkerController() ===\n      this.activeServiceWorker_) {\n    return this.sender_.send(\n        'keyChanged',\n        {'key': key},\n        // Use long timeout if receiver is known to be available.\n        this.serviceWorkerReceiverAvailable_)\n        .then(function(responses) {\n          // Return nothing.\n        })\n        .thenCatch(function(error) {\n          // This is a best effort approach. Ignore errors.\n        });\n  }\n  return goog.Promise.resolve();\n};\n\n\n/**\n * Retrieves a stored item identified by the key provided asynchronously.\n * The value is passed to the callback function provided.\n * @param {string} key The storage key for the item to fetch.\n * @return {!goog.Promise} A promise that resolves with the item's value, or\n *     null if the item is not found.\n * @override\n */\nfireauth.storage.IndexedDB.prototype.get = function(key) {\n  return this\n    .withRetry_((db) => {\n      return this.onIDBRequest_(\n          this.getDataObjectStore_(this.getTransaction_(db, false)).get(key));\n    })\n    .then((response) => {\n      return response && response.value;\n    }); \n};\n\n\n/**\n * Deletes the item identified by the key provided and on success, runs the\n * optional callback.\n * @param {string} key The storage key for the item to remove.\n * @return {!goog.Promise<void>} A promise that resolves on operation success.\n * @override\n */\nfireauth.storage.IndexedDB.prototype.remove = function(key) {\n  let isLocked = false;\n  return this\n    .withRetry_((db) => {\n        isLocked = true;\n        this.pendingOpsTracker_++;\n        return this.onIDBRequest_(\n            this.getDataObjectStore_(\n                this.getTransaction_(db, true))['delete'](key));\n      }).then(() => {\n        // Delete from local copy to avoid triggering false external event.\n        delete this.localMap_[key];\n        // Announce change in key to service worker.\n        return this.notifySW_(key);\n      }).thenAlways(() => {\n        if (isLocked) {\n          this.pendingOpsTracker_--;\n        }\n      });\n};\n\n\n/**\n * @return {!goog.Promise<!Array<string>>} A promise that resolved with all the\n *     storage keys that have changed.\n * @private\n */\nfireauth.storage.IndexedDB.prototype.sync_ = function() {\n  var self = this;\n  return this.initializeDbAndRun_()\n      .then(function(db) {\n        var objectStore =\n            self.getDataObjectStore_(self.getTransaction_(db, false));\n        if (objectStore['getAll']) {\n          // Get all keys and value pairs using getAll if supported.\n          return self.onIDBRequest_(objectStore['getAll']());\n        } else {\n          // If getAll isn't supported, fallback to cursor.\n          return new goog.Promise(function(resolve, reject) {\n            var res = [];\n            var request = objectStore.openCursor();\n            request.onsuccess = function(event) {\n              var cursor = event.target.result;\n              if (cursor) {\n                res.push(cursor.value);\n                cursor['continue']();\n              } else {\n                resolve(res);\n              }\n            };\n            request.onerror = function(event) {\n              reject(event.target.error);\n            };\n          });\n        }\n      }).then(function(res) {\n        var centralCopy = {};\n        // List of keys differing from central copy.\n        var diffKeys = [];\n        // Build central copy (external copy).\n        if (self.pendingOpsTracker_ == 0) {\n          for (var i = 0; i < res.length; i++) {\n            centralCopy[res[i][self.dataKeyPath_]] =\n                res[i][self.valueKeyPath_];\n          }\n          // Get diff of central copy and local copy.\n          diffKeys = fireauth.util.getKeyDiff(self.localMap_, centralCopy);\n          // Update local copy.\n          self.localMap_ = centralCopy;\n        }\n        // Return modified keys.\n        return diffKeys;\n      });\n};\n\n\n/**\n * Adds a listener to storage event change.\n * @param {function(!Array<string>)} listener The storage event listener.\n * @override\n */\nfireauth.storage.IndexedDB.prototype.addStorageListener =\n    function(listener) {\n  // First listener, start listeners.\n  if (this.storageListeners_.length == 0) {\n    this.startListeners_();\n  }\n  this.storageListeners_.push(listener);\n};\n\n\n/**\n * Removes a listener to storage event change.\n * @param {function(!Array<string>)} listener The storage event listener.\n * @override\n */\nfireauth.storage.IndexedDB.prototype.removeStorageListener =\n    function(listener) {\n  goog.array.removeAllIf(\n      this.storageListeners_,\n      function(ele) {\n        return ele == listener;\n      });\n  // No more listeners, stop.\n  if (this.storageListeners_.length == 0) {\n    this.stopListeners_();\n  }\n};\n\n\n/**\n * Removes all listeners to storage event change.\n */\nfireauth.storage.IndexedDB.prototype.removeAllStorageListeners =\n    function() {\n  this.storageListeners_ = [];\n  // No more listeners, stop.\n  this.stopListeners_();\n};\n\n\n/**\n * Starts the listener to storage events.\n * @private\n */\nfireauth.storage.IndexedDB.prototype.startListeners_ = function() {\n  var self = this;\n  // Stop any previous listeners.\n  this.stopListeners_();\n  var repeat = function() {\n    self.pollTimerId_ = setTimeout(\n        function() {\n          self.poll_ = self.sync_()\n              .then(function(keys) {\n                // If keys modified, call listeners.\n                if (keys.length > 0) {\n                  goog.array.forEach(\n                      self.storageListeners_,\n                      function(listener) {\n                        listener(keys);\n                      });\n                }\n              })\n              .then(function() {\n                repeat();\n              })\n              .thenCatch(function(error) {\n                if (error.message != fireauth.storage.IndexedDB.STOP_ERROR_) {\n                  repeat();\n                }\n              });\n        },\n        fireauth.storage.IndexedDB.POLLING_DELAY_);\n  };\n  repeat();\n};\n\n\n/**\n * Stops the listener to storage events.\n * @private\n */\nfireauth.storage.IndexedDB.prototype.stopListeners_ = function() {\n  if (this.poll_) {\n    // Cancel polling function.\n    this.poll_.cancel(fireauth.storage.IndexedDB.STOP_ERROR_);\n  }\n  // Clear any pending polling timer.\n  if (this.pollTimerId_) {\n    clearTimeout(this.pollTimerId_);\n    this.pollTimerId_ = null;\n  }\n};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the PostMessager interface needed for the\n * `fireauth.messagechannel.Sender`, in addition to 2 types of implementations.\n */\n\ngoog.provide('fireauth.messagechannel.PostMessager');\ngoog.provide('fireauth.messagechannel.WindowPostMessager');\ngoog.provide('fireauth.messagechannel.WorkerClientPostMessager');\n\n\n/**\n * This is the interface defining the postMessage format of a window which\n * takes an additional second parameter for target origin.\n *\n * @typedef {{\n *   postMessage: function(*, string, !Array<!Transferable>)\n * }}\n */\nfireauth.messagechannel.Window;\n\n\n/**\n * This is the interface defining the postMessage format of a worker or\n * ServiceWorkerClient, etc. which just takes a message and a list of\n * Transferables.\n *\n * @typedef {{\n *   postMessage: function(*, !Array<!Transferable>)\n * }}\n */\nfireauth.messagechannel.WorkerClient;\n\n\n/**\n * Defines a common interface to postMessage data to a specified PostMessager.\n * @interface\n */\nfireauth.messagechannel.PostMessager = function() {};\n\n\n/**\n * Sends a message to the specified context.\n * @param {*} message The message to send.\n * @param {!Array<!Transferable>} transfer The list of `Transferable` objects\n *     that are transferred with the message. The ownsership fo these objects is\n *     given to the destination side and they are no longer usable on the\n *     sending side.\n */\nfireauth.messagechannel.PostMessager.prototype.postMessage =\n    function(message, transfer) {};\n\n\n\n/**\n * Defines the implementation for postMessaging to a window context.\n * @param {!fireauth.messagechannel.Window} win The window PostMessager.\n * @param {?string=} opt_targetOrigin The target origin.\n * @constructor\n * @implements {fireauth.messagechannel.PostMessager}\n */\nfireauth.messagechannel.WindowPostMessager = function(win, opt_targetOrigin) {\n  /**\n   * @const @private {!fireauth.messagechannel.Window} The window PostMessager.\n   */\n  this.win_ = win;\n  /** @const @private {string} The postMessage target origin. */\n  this.targetOrigin_ = opt_targetOrigin || '*';\n};\n\n\n/**\n * Sends a message to the specified window context.\n * @param {*} message The message to send.\n * @param {!Array<!Transferable>} transfer The list of `Transferable` objects\n *     that are transferred with the message. The ownsership fo these objects is\n *     given to the destination side and they are no longer usable on the\n *     sending side.\n * @override\n */\nfireauth.messagechannel.WindowPostMessager.prototype.postMessage =\n    function(message, transfer) {\n  this.win_.postMessage(message, this.targetOrigin_, transfer);\n};\n\n\n/**\n * Defines the implementation for postMessaging to a worker/client context.\n * @param {!fireauth.messagechannel.WorkerClient} worker The worker/client\n *     PostMessager.\n * @constructor\n * @implements {fireauth.messagechannel.PostMessager}\n */\nfireauth.messagechannel.WorkerClientPostMessager = function(worker) {\n  /**\n   * @const @private {!fireauth.messagechannel.WorkerClient} The worker/client\n   *     PostMessager.\n   */\n  this.worker_ = worker;\n};\n\n\n/**\n * Sends a message to the specified worker/client context.\n * @param {*} message The message to send.\n * @param {!Array<!Transferable>} transfer The list of `Transferable` objects\n *     that are transferred with the message. The ownsership fo these objects is\n *     given to the destination side and they are no longer usable on the\n *     sending side.\n * @override\n */\nfireauth.messagechannel.WorkerClientPostMessager.prototype.postMessage =\n    function(message, transfer) {\n  this.worker_.postMessage(message, transfer);\n};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the MessageChannel based wrapper for sending messages\n * to other windows or workers.\n */\n\ngoog.provide('fireauth.messagechannel.Sender');\n\ngoog.require('fireauth.messagechannel.Error');\ngoog.require('fireauth.messagechannel.PostMessager');\ngoog.require('fireauth.messagechannel.Status');\ngoog.require('fireauth.messagechannel.TimeoutDuration');\ngoog.require('fireauth.messagechannel.utils');\ngoog.require('goog.Promise');\ngoog.require('goog.array');\n\n\n/**\n * This is the interface defining a MessageChannel/handler pair.\n *\n * @typedef {{\n *   onMessage: function(!Event),\n *   messageChannel: !MessageChannel\n * }}\n */\nfireauth.messagechannel.MessageHandler;\n\n\n/**\n * Helper static function to create messageChannel errors.\n * @param {!fireauth.messagechannel.Error} errorId The error identifier.\n * @param {?string=} opt_message The optional error message used for generic\n *     error types.\n * @return {!Error} The constructed error to return.\n * @private\n */\nfireauth.messagechannel.createError_ = function(errorId, opt_message) {\n  if (errorId != fireauth.messagechannel.Error.UNKNOWN || !opt_message) {\n    return new Error(errorId);\n  } else {\n    return new Error(opt_message);\n  }\n};\n\n\n/**\n * Initializes a channel to send specific messages to a specified PostMessage.\n * @param {!fireauth.messagechannel.PostMessager} postMessager The post messager\n *     to send messages to.\n * @constructor\n */\nfireauth.messagechannel.Sender = function(postMessager) {\n  /**\n   * @const @private {!fireauth.messagechannel.PostMessager} The messageChannel\n   *     PostMessager.\n   */\n  this.postMessager_ = postMessager;\n  /** @private {boolean} Whether the connection was closed. */\n  this.closed_ = false;\n  /**\n   * @const @private {!Array<!fireauth.messagechannel.MessageHandler>} The list\n   *     of subscribed message handlers and their corresponding MessageChannels.\n   */\n  this.messageHandlers_ = [];\n};\n\n\n/**\n * Sends a message to the receiver. The message is identified by an event\n * type and can carry additional payload data.\n * The sender protocol works as follows:\n * <ul>\n * <li>The request is constructed and postMessaged to the receiver with the port\n *     used to reply back to sender.</li>\n * <li>The operation will block until an ACK response is received. If not, it\n *     will timeout and reject with an error.</li>\n * <li>If an ACK response is received, it will wait longer for the full\n *     processed response.</li>\n * <li>Once the response is received, the operation will resolve with that\n *     result.</li>\n * </ul>\n *\n * @param {string} eventType The event type identifying the message. This is\n *     used to help the receiver handle this message.\n * @param {?Object=} opt_data The optional data to send along the message.\n * @param {?boolean=} opt_useLongTimeout Whether long timeout should be used\n *     for ACK responses.\n * @return {!goog.Promise<!Array<{fulfilled: boolean,\n *                                value: (*|undefined),\n *                                reason: (*|undefined)}>>} A promise that\n *     resolves with the receiver responses.\n */\nfireauth.messagechannel.Sender.prototype.send = function(\n    eventType, opt_data, opt_useLongTimeout) {\n  var self = this;\n  var eventId;\n  var data = opt_data || {};\n  var onMessage;\n  var ackTimer;\n  var completionTimer;\n  var entry = null;\n  if (this.closed_) {\n    return goog.Promise.reject(fireauth.messagechannel.createError_(\n        fireauth.messagechannel.Error.CONNECTION_UNAVAILABLE));\n  }\n  var ackTimeout =\n      !!opt_useLongTimeout ?\n      fireauth.messagechannel.TimeoutDuration.LONG_ACK :\n      fireauth.messagechannel.TimeoutDuration.ACK;\n  var messageChannel =\n      fireauth.messagechannel.utils.initializeMessageChannel();\n  return new goog.Promise(function(resolve, reject) {\n    // Send message along with port for reply\n    if (messageChannel) {\n      eventId = fireauth.messagechannel.utils.generateEventId();\n      // Start the connection if not already started.\n      messageChannel.port1.start();\n      // Handler for receiving message reply from receiver.\n      // Blocks promise resolution until service worker detects the change.\n      ackTimer = setTimeout(function() {\n        // The receiver may not be able to handle the response for various\n        // reasons: library not included, or an incompatible version of\n        // the library is included.\n        // Timeout after some time.\n        reject(fireauth.messagechannel.createError_(\n            fireauth.messagechannel.Error.UNSUPPORTED_EVENT));\n      }, ackTimeout);\n      onMessage = function(event) {\n        // Process only the expected events that match current event ID.\n        if (event.data['eventId'] !== eventId) {\n          return;\n        }\n        // This avoids adding a long wait when the receiver is unable to handle\n        // the event.\n        if (event.data['status'] === fireauth.messagechannel.Status.ACK) {\n          clearTimeout(ackTimer);\n          // Set longer timeout to allow receiver to process.\n          completionTimer = setTimeout(function() {\n            reject(fireauth.messagechannel.createError_(\n                fireauth.messagechannel.Error.TIMEOUT));\n          }, fireauth.messagechannel.TimeoutDuration.COMPLETION);\n          return;\n        } else if (event.data['status'] ===\n                   fireauth.messagechannel.Status.DONE) {\n          clearTimeout(completionTimer);\n          if (typeof event.data['response'] !== 'undefined') {\n            resolve(event.data['response']);\n          } else {\n            reject(fireauth.messagechannel.createError_(\n                fireauth.messagechannel.Error.UNKNOWN));\n          }\n        } else {\n          clearTimeout(ackTimer);\n          clearTimeout(completionTimer);\n          reject(fireauth.messagechannel.createError_(\n              fireauth.messagechannel.Error.INVALID_RESPONSE));\n        }\n      };\n      entry = {\n        'messageChannel': messageChannel,\n        'onMessage': onMessage\n      };\n      self.messageHandlers_.push(entry);\n      messageChannel.port1.addEventListener('message', onMessage);\n      var request = {\n        'eventType': eventType,\n        'eventId': eventId,\n        'data': data\n      };\n      // It is possible the receiver cannot handle this result.\n      // For example, the developer may not be including the library in the\n      // receiver or using an outdated version.\n      self.postMessager_.postMessage(\n          request,\n          [messageChannel.port2]);\n    } else {\n      // No connection available.\n      reject(fireauth.messagechannel.createError_(\n          fireauth.messagechannel.Error.CONNECTION_UNAVAILABLE));\n    }\n  }).then(function(result) {\n    // On completion, remove the message handler. A new one is needed for a\n    // new message.\n    self.removeMessageHandler_(entry);\n    return result;\n  }).thenCatch(function(error) {\n    // On failure, remove the message handler. A new one is needed for a new\n    // message.\n    self.removeMessageHandler_(entry);\n    throw error;\n  });\n};\n\n\n/**\n * Removes the onMessage handler for the specified messageChannel.\n * @param {?fireauth.messagechannel.MessageHandler} messageHandler\n * @private\n */\nfireauth.messagechannel.Sender.prototype.removeMessageHandler_ =\n    function(messageHandler) {\n  if (!messageHandler) {\n    return;\n  }\n  var messageChannel = messageHandler['messageChannel'];\n  var onMessage = messageHandler['onMessage'];\n  if (messageChannel) {\n    messageChannel.port1.removeEventListener('message', onMessage);\n    messageChannel.port1.close();\n  }\n  goog.array.removeAllIf(this.messageHandlers_, function(ele) {\n    return ele == messageHandler;\n  });\n};\n\n\n/** Closes the underlying MessageChannel connection. */\nfireauth.messagechannel.Sender.prototype.close = function() {\n  // Any pending event will timeout.\n  while (this.messageHandlers_.length > 0) {\n    this.removeMessageHandler_(this.messageHandlers_[0]);\n  }\n  this.closed_ = true;\n};\n\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the MessageChannel common utilities and enums.\n */\n\ngoog.provide('fireauth.messagechannel.Error');\ngoog.provide('fireauth.messagechannel.Status');\ngoog.provide('fireauth.messagechannel.TimeoutDuration');\ngoog.provide('fireauth.messagechannel.utils');\n\n\n/**\n * Enum for the messagechannel error messages. These errors are not meant to be\n * user facing.\n * @enum {string}\n */\nfireauth.messagechannel.Error = {\n  CONNECTION_CLOSED: 'connection_closed',\n  CONNECTION_UNAVAILABLE: 'connection_unavailable',\n  INVALID_RESPONSE: 'invalid_response',\n  TIMEOUT: 'timeout',\n  UNKNOWN: 'unknown_error',\n  UNSUPPORTED_EVENT: 'unsupported_event'\n};\n\n\n/**\n * Enum for the message channel request status labels.\n * @enum {string}\n */\nfireauth.messagechannel.Status = {\n  ACK: 'ack',\n  DONE: 'done'\n};\n\n\n/**\n * Enum for the timeout durations in milliseconds for different contexts.\n * @enum {number}\n */\nfireauth.messagechannel.TimeoutDuration = {\n  ACK: 50,\n  COMPLETION: 3000,\n  // Used when a handler is confirmed to be available on the other side.\n  LONG_ACK: 800\n};\n\n\n/**\n * @param {?string=} opt_prefix An optional prefix string to prepend to ID.\n * @param {?number=} opt_digits An optional number of digits used for event ID.\n * @return {string} The generated event ID used to identify a generic event.\n */\nfireauth.messagechannel.utils.generateEventId =\n    function(opt_prefix, opt_digits) {\n  // 0, null and undefined will default to 20.\n  var digits = opt_digits || 20;\n  return opt_prefix ? opt_prefix : '' +\n      Math.floor(Math.random() * Math.pow(10, digits)).toString();\n};\n\n\n/**\n * @return {?MessageChannel} The initialized MessageChannel instance if\n *     supported.\n */\nfireauth.messagechannel.utils.initializeMessageChannel = function() {\n  return typeof MessageChannel !== 'undefined' ? new MessageChannel() : null;\n};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\ngoog.provide('fireauth.storage.HybridIndexedDB');\n\ngoog.require('fireauth.storage.IndexedDB');\ngoog.require('fireauth.storage.Storage');\ngoog.require('fireauth.util');\ngoog.require('goog.Promise');\ngoog.require('goog.array');\n\n/**\n * HybridStorage provides an interface to indexedDB, the persistent Web\n * Storage API for browsers that support it. This will fallback to the provided\n * fallback storage when indexedDB is not supported which is determined\n * asynchronously.\n * @param {!fireauth.storage.Storage} fallbackStorage The storage to fallback to\n *     when indexedDB is not available.\n * @constructor\n * @implements {fireauth.storage.Storage}\n */\nfireauth.storage.HybridIndexedDB = function(fallbackStorage) {\n  var self = this;\n  var storage = null;\n  /**\n   * @const @private {!Array<function((!goog.events.BrowserEvent|\n   *                                   !Array<string>))>} The storage listeners.\n   */\n  this.storageListeners_ = [];\n  // This type may change if the fallback is used.\n  /** @public {string} The storage type identifier. */\n  this.type = fireauth.storage.Storage.Type.INDEXEDDB;\n  /**\n   * @const @private {!fireauth.storage.Storage} The fallback storage when\n   *     indexedDB is unavailable.\n   */\n  this.fallbackStorage_ = fallbackStorage;\n  /**\n   * @const @private {!goog.Promise<!fireauth.storage.Storage>} A promise that\n   *     resolves with the underlying indexedDB storage or a fallback when not\n   *     supported.\n   */\n  this.underlyingStoragePromise_ = goog.Promise.resolve().then(function() {\n    // Initial check shows indexedDB is available. This is not enough.\n    // Try to write/read from indexedDB. If it fails, switch to fallback.\n    if (fireauth.storage.IndexedDB.isAvailable()) {\n      // Test write/read using a random key. This is important for the following\n      // reasons:\n      // 1. Double inclusion of the firebase-auth.js library.\n      // 2. Multiple windows opened at the same time.\n      // The above may cause collision if multiple instances try to\n      // write/read/delete from the same entry.\n      var randomId = fireauth.util.generateEventId();\n      var randomKey = fireauth.storage.HybridIndexedDB.KEY_ + randomId;\n      storage = fireauth.storage.IndexedDB.getFireauthManager();\n      return storage.set(randomKey, randomId)\n          .then(function() {\n            return storage.get(randomKey);\n          })\n          .then(function(value) {\n            if (value !== randomId) {\n              throw new Error('indexedDB not supported!');\n            }\n            return storage.remove(randomKey);\n          })\n          .then(function() {\n            return storage;\n          })\n          .thenCatch(function(error) {\n            return self.fallbackStorage_;\n          });\n    } else {\n      // indexedDB not available, use fallback.\n      return self.fallbackStorage_;\n    }\n  }).then(function(storage) {\n    // Update type.\n    self.type = storage.type;\n    // Listen to all storage changes.\n    storage.addStorageListener(function(key) {\n      // Trigger all attached storage listeners.\n      goog.array.forEach(self.storageListeners_, function(listener) {\n        listener(key);\n      });\n    });\n    return storage;\n  });\n};\n\n\n/**\n * The key used to check if the storage instance is available.\n * @private {string}\n * @const\n */\nfireauth.storage.HybridIndexedDB.KEY_ = '__sak';\n\n\n/**\n * Retrieves the value stored at the key.\n * @param {string} key\n * @return {!goog.Promise<*>}\n * @override\n */\nfireauth.storage.HybridIndexedDB.prototype.get = function(key) {\n  return this.underlyingStoragePromise_.then(function(storage) {\n    return storage.get(key);\n  });\n};\n\n\n/**\n * Stores the value at the specified key.\n * @param {string} key\n * @param {*} value\n * @return {!goog.Promise<void>}\n * @override\n */\nfireauth.storage.HybridIndexedDB.prototype.set = function(key, value) {\n  return this.underlyingStoragePromise_.then(function(storage) {\n    return storage.set(key, value);\n  });\n};\n\n\n/**\n * Removes the value at the specified key.\n * @param {string} key\n * @return {!goog.Promise<void>}\n * @override\n */\nfireauth.storage.HybridIndexedDB.prototype.remove = function(key) {\n  return this.underlyingStoragePromise_.then(function(storage) {\n    return storage.remove(key);\n  });\n};\n\n\n/**\n * Adds a listener to storage event change.\n * @param {function((!goog.events.BrowserEvent|!Array<string>))} listener The\n *     storage event listener.\n * @override\n */\nfireauth.storage.HybridIndexedDB.prototype.addStorageListener =\n    function(listener) {\n  this.storageListeners_.push(listener);\n};\n\n\n/**\n * Removes a listener to storage event change.\n * @param {function(!goog.events.BrowserEvent)} listener The storage event\n *     listener.\n * @override\n */\nfireauth.storage.HybridIndexedDB.prototype.removeStorageListener =\n    function(listener) {\n  goog.array.removeAllIf(this.storageListeners_, function(ele) {\n    return ele == listener;\n  });\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\ngoog.provide('fireauth.storage.InMemoryStorage');\n\ngoog.require('goog.Promise');\n\n\n\n/**\n * InMemoryStorage provides an implementation of Storage that will only persist\n * data in memory. This data is volatile and in a browser environment, will\n * be lost on page unload and will only be available in the current window.\n * This is a useful fallback for browsers where web storage is disabled or\n * environments where the preferred storage mechanism is not available or not\n * supported.\n * @constructor\n * @implements {fireauth.storage.Storage}\n */\nfireauth.storage.InMemoryStorage = function() {\n  /** @protected {!Object} The object where we store values. */\n  this.storage = {};\n  /** @public {string} The storage type identifier. */\n  this.type = fireauth.storage.Storage.Type.IN_MEMORY;\n};\n\n\n/**\n * @param {string} key\n * @return {!goog.Promise<*>}\n * @override\n */\nfireauth.storage.InMemoryStorage.prototype.get = function(key) {\n  return goog.Promise.resolve(/** @type {*} */ (this.storage[key]));\n};\n\n\n/**\n * @param {string} key\n * @param {*} value\n * @return {!goog.Promise<void>}\n * @override\n */\nfireauth.storage.InMemoryStorage.prototype.set = function(key, value) {\n  this.storage[key] = value;\n  return goog.Promise.resolve();\n};\n\n\n/**\n * @param {string} key\n * @return {!goog.Promise<void>}\n * @override\n */\nfireauth.storage.InMemoryStorage.prototype.remove = function(key) {\n  delete this.storage[key];\n  return goog.Promise.resolve();\n};\n\n\n/**\n * @param {function((!goog.events.BrowserEvent|!Array<string>))} listener The\n *     storage event listener.\n * @override\n */\nfireauth.storage.InMemoryStorage.prototype.addStorageListener =\n    function(listener) {\n};\n\n\n/**\n * @param {function((!goog.events.BrowserEvent|!Array<string>))} listener The\n *     storage event listener.\n * @override\n */\nfireauth.storage.InMemoryStorage.prototype.removeStorageListener = function(\n    listener) {};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\ngoog.provide('fireauth.storage.LocalStorage');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.storage.Storage');\ngoog.require('fireauth.util');\ngoog.require('goog.Promise');\ngoog.require('goog.events');\n\n\n\n/**\n * LocalStorage provides an interface to localStorage, the persistent Web\n * Storage API.\n * @constructor\n * @implements {fireauth.storage.Storage}\n */\nfireauth.storage.LocalStorage = function() {\n  // Check is localStorage available in the current environment.\n  if (!fireauth.storage.LocalStorage.isAvailable()) {\n    // In a Node.js environment, dom-storage module needs to be required.\n    if (fireauth.util.getEnvironment() == fireauth.util.Env.NODE) {\n      throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR,\n          'The LocalStorage compatibility library was not found.');\n    }\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.WEB_STORAGE_UNSUPPORTED);\n  }\n\n  /**\n   * The underlying storage instance for persistent data.\n   * @private {!Storage}\n   */\n  this.storage_ = /** @type {!Storage} */ (\n      fireauth.storage.LocalStorage.getGlobalStorage() ||\n      firebase.INTERNAL['node']['localStorage']);\n  /** @public {string} The storage type identifier. */\n  this.type = fireauth.storage.Storage.Type.LOCAL_STORAGE;\n};\n\n\n/** @return {?Storage|undefined} The global localStorage instance. */\nfireauth.storage.LocalStorage.getGlobalStorage = function() {\n  try {\n    var storage = goog.global['localStorage'];\n    // Try editing web storage. If an error is thrown, it may be disabled.\n    var key = fireauth.util.generateEventId();\n    if (storage) {\n      storage['setItem'](key, '1');\n      storage['removeItem'](key);\n    }\n    return storage;\n  } catch (e) {\n    // In some cases, browsers with web storage disabled throw an error simply\n    // on access.\n    return null;\n  }\n};\n\n\n/**\n * The key used to check if the storage instance is available.\n * @private {string}\n * @const\n */\nfireauth.storage.LocalStorage.STORAGE_AVAILABLE_KEY_ = '__sak';\n\n\n/** @return {boolean} Whether localStorage is available. */\nfireauth.storage.LocalStorage.isAvailable = function() {\n  // In Node.js localStorage is polyfilled.\n  var isNode = fireauth.util.getEnvironment() == fireauth.util.Env.NODE;\n  // Either window should provide this storage mechanism or in case of Node.js,\n  // firebase.INTERNAL should provide it.\n  var storage = fireauth.storage.LocalStorage.getGlobalStorage() ||\n      (isNode &&\n       firebase.INTERNAL['node'] &&\n       firebase.INTERNAL['node']['localStorage']);\n  if (!storage) {\n    return false;\n  }\n  try {\n    // setItem will throw an exception if we cannot access web storage (e.g.,\n    // Safari in private mode).\n    storage.setItem(fireauth.storage.LocalStorage.STORAGE_AVAILABLE_KEY_, '1');\n    storage.removeItem(fireauth.storage.LocalStorage.STORAGE_AVAILABLE_KEY_);\n    return true;\n  } catch (e) {\n    return false;\n  }\n};\n\n\n/**\n * Retrieves the value stored at the key.\n * @param {string} key\n * @return {!goog.Promise<*>}\n * @override\n */\nfireauth.storage.LocalStorage.prototype.get = function(key) {\n  var self = this;\n  return goog.Promise.resolve()\n      .then(function() {\n        var json = self.storage_.getItem(key);\n        return fireauth.util.parseJSON(json);\n      });\n};\n\n\n/**\n * Stores the value at the specified key.\n * @param {string} key\n * @param {*} value\n * @return {!goog.Promise<void>}\n * @override\n */\nfireauth.storage.LocalStorage.prototype.set = function(key, value) {\n  var self = this;\n  return goog.Promise.resolve()\n      .then(function() {\n        var obj = fireauth.util.stringifyJSON(value);\n        if (obj === null) {\n          self.remove(key);\n        } else {\n          self.storage_.setItem(key, obj);\n        }\n      });\n};\n\n\n/**\n * Removes the value at the specified key.\n * @param {string} key\n * @return {!goog.Promise<void>}\n * @override\n */\nfireauth.storage.LocalStorage.prototype.remove = function(key) {\n  var self = this;\n  return goog.Promise.resolve()\n      .then(function() {\n        self.storage_.removeItem(key);\n      });\n};\n\n\n/**\n * Adds a listener to storage event change.\n * @param {function(!goog.events.BrowserEvent)} listener The storage event\n *     listener.\n * @override\n */\nfireauth.storage.LocalStorage.prototype.addStorageListener = function(\n    listener) {\n  if (goog.global['window']) {\n    goog.events.listen(goog.global['window'], 'storage', listener);\n  }\n};\n\n\n/**\n * Removes a listener to storage event change.\n * @param {function(!goog.events.BrowserEvent)} listener The storage event\n *     listener.\n * @override\n */\nfireauth.storage.LocalStorage.prototype.removeStorageListener = function(\n    listener) {\n  if (goog.global['window']) {\n    goog.events.unlisten(goog.global['window'], 'storage', listener);\n  }\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\ngoog.provide('fireauth.storage.NullStorage');\n\ngoog.require('fireauth.storage.Storage');\ngoog.require('goog.Promise');\n\n\n\n/**\n * NullStorage provides an implementation of Storage that does always returns\n * null. This can be used if a type of storage is unsupported on a platform.\n * @constructor\n * @implements {fireauth.storage.Storage}\n */\nfireauth.storage.NullStorage = function() {\n  /** @private {!Object} The object where we store values. */\n  this.storage_ = {};\n  /** @public {string} The storage type identifier. */\n  this.type = fireauth.storage.Storage.Type.NULL_STORAGE;\n};\n\n\n/**\n * @param {string} key\n * @return {!goog.Promise<*>}\n * @override\n */\nfireauth.storage.NullStorage.prototype.get = function(key) {\n  return goog.Promise.resolve(/** @type {*} */ (null));\n};\n\n\n/**\n * @param {string} key\n * @param {*} value\n * @return {!goog.Promise<void>}\n * @override\n */\nfireauth.storage.NullStorage.prototype.set = function(key, value) {\n  return goog.Promise.resolve();\n};\n\n\n/**\n * @param {string} key\n * @return {!goog.Promise<void>}\n * @override\n */\nfireauth.storage.NullStorage.prototype.remove = function(key) {\n  return goog.Promise.resolve();\n};\n\n\n/**\n * @param {function(!goog.events.BrowserEvent)} listener The storage event\n *     listener.\n * @override\n */\nfireauth.storage.NullStorage.prototype.addStorageListener = function(listener) {\n};\n\n\n/**\n * @param {function(!goog.events.BrowserEvent)} listener The storage event\n *     listener.\n * @override\n */\nfireauth.storage.NullStorage.prototype.removeStorageListener = function(\n    listener) {};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\ngoog.provide('fireauth.storage.SessionStorage');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.storage.Storage');\ngoog.require('fireauth.util');\ngoog.require('goog.Promise');\n\n\n\n/**\n * SessionStorage provides an interface to sessionStorage, the temporary web\n * storage API.\n * @constructor\n * @implements {fireauth.storage.Storage}\n */\nfireauth.storage.SessionStorage = function() {\n  // Check is sessionStorage available in the current environment.\n  if (!fireauth.storage.SessionStorage.isAvailable()) {\n    // In a Node.js environment, dom-storage module needs to be required.\n    if (fireauth.util.getEnvironment() == fireauth.util.Env.NODE) {\n      throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR,\n          'The SessionStorage compatibility library was not found.');\n    }\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.WEB_STORAGE_UNSUPPORTED);\n  }\n\n  /**\n   * The underlying storage instance for temporary data.\n   * @private {!Storage}\n   */\n  this.storage_ = /** @type {!Storage} */ (\n      fireauth.storage.SessionStorage.getGlobalStorage() ||\n      firebase.INTERNAL['node']['sessionStorage']);\n  /** @public {string} The storage type identifier. */\n  this.type = fireauth.storage.Storage.Type.SESSION_STORAGE;\n};\n\n\n/** @return {?Storage|undefined} The global sessionStorage instance. */\nfireauth.storage.SessionStorage.getGlobalStorage = function() {\n  try {\n    var storage = goog.global['sessionStorage'];\n    // Try editing web storage. If an error is thrown, it may be disabled.\n    var key = fireauth.util.generateEventId();\n    if (storage) {\n      storage['setItem'](key, '1');\n      storage['removeItem'](key);\n    }\n    return storage;\n  } catch (e) {\n    // In some cases, browsers with web storage disabled throw an error simply\n    // on access.\n    return null;\n  }\n};\n\n\n/**\n * The key used to check if the storage instance is available.\n * @private {string}\n * @const\n */\nfireauth.storage.SessionStorage.STORAGE_AVAILABLE_KEY_ = '__sak';\n\n\n/** @return {boolean} Whether sessionStorage is available. */\nfireauth.storage.SessionStorage.isAvailable = function() {\n  // In Node.js sessionStorage is polyfilled.\n  var isNode = fireauth.util.getEnvironment() == fireauth.util.Env.NODE;\n  // Either window should provide this storage mechanism or in case of Node.js,\n  // firebase.INTERNAL should provide it.\n  var storage = fireauth.storage.SessionStorage.getGlobalStorage() ||\n      (isNode &&\n       firebase.INTERNAL['node'] &&\n       firebase.INTERNAL['node']['sessionStorage']);\n  if (!storage) {\n    return false;\n  }\n  try {\n    // setItem will throw an exception if we cannot access web storage (e.g.,\n    // Safari in private mode).\n    storage.setItem(\n        fireauth.storage.SessionStorage.STORAGE_AVAILABLE_KEY_, '1');\n    storage.removeItem(fireauth.storage.SessionStorage.STORAGE_AVAILABLE_KEY_);\n    return true;\n  } catch (e) {\n    return false;\n  }\n};\n\n\n/**\n * Retrieves the value stored at the key.\n * @param {string} key\n * @return {!goog.Promise<*>}\n * @override\n */\nfireauth.storage.SessionStorage.prototype.get = function(key) {\n  var self = this;\n  return goog.Promise.resolve()\n      .then(function() {\n        var json = self.storage_.getItem(key);\n        return fireauth.util.parseJSON(json);\n      });\n};\n\n\n/**\n * Stores the value at the specified key.\n * @param {string} key\n * @param {*} value\n * @return {!goog.Promise<void>}\n * @override\n */\nfireauth.storage.SessionStorage.prototype.set = function(key, value) {\n  var self = this;\n  return goog.Promise.resolve()\n      .then(function() {\n        var obj = fireauth.util.stringifyJSON(value);\n        if (obj === null) {\n          self.remove(key);\n        } else {\n          self.storage_.setItem(key, obj);\n        }\n      });\n};\n\n\n/**\n * Removes the value at the specified key.\n * @param {string} key\n * @return {!goog.Promise<void>}\n * @override\n */\nfireauth.storage.SessionStorage.prototype.remove = function(key) {\n  var self = this;\n  return goog.Promise.resolve()\n      .then(function() {\n        self.storage_.removeItem(key);\n      });\n};\n\n\n/**\n * Adds a listener to storage event change.\n * @param {function(!goog.events.BrowserEvent)} listener The storage event\n *     listener.\n * @override\n */\nfireauth.storage.SessionStorage.prototype.addStorageListener = function(\n    listener) {};\n\n\n/**\n * Removes a listener to storage event change.\n * @param {function(!goog.events.BrowserEvent)} listener The storage event\n *     listener.\n * @override\n */\nfireauth.storage.SessionStorage.prototype.removeStorageListener = function(\n    listener) {};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\ngoog.provide('fireauth.storage.Factory');\ngoog.provide('fireauth.storage.Factory.EnvConfig');\n\ngoog.require('fireauth.storage.AsyncStorage');\ngoog.require('fireauth.storage.HybridIndexedDB');\ngoog.require('fireauth.storage.InMemoryStorage');\ngoog.require('fireauth.storage.LocalStorage');\ngoog.require('fireauth.storage.NullStorage');\ngoog.require('fireauth.storage.SessionStorage');\ngoog.require('fireauth.util');\n\n\n/**\n * Factory manages the storage implementations and determines the correct one\n * for the current environment.\n * @param {!fireauth.storage.Factory.EnvConfigType} env The storage\n *     configuration for the current environment.\n * @constructor\n */\nfireauth.storage.Factory = function(env) {\n  /** @const @private {!fireauth.storage.Factory.EnvConfigType} */\n  this.env_ = env;\n};\n\n\n/**\n * Construct the singleton instance of the Factory, automatically detecting\n * the current environment.\n * @return {!fireauth.storage.Factory}\n */\nfireauth.storage.Factory.getInstance = function() {\n  if (!fireauth.storage.Factory.instance_) {\n    fireauth.storage.Factory.instance_ =\n        new fireauth.storage.Factory(fireauth.storage.Factory.getEnvConfig());\n  }\n  return fireauth.storage.Factory.instance_;\n};\n\n\n/**\n * @typedef {{\n *   persistent: function(new:fireauth.storage.Storage),\n *   temporary: function(new:fireauth.storage.Storage)\n * }}\n */\nfireauth.storage.Factory.EnvConfigType;\n\n\n/**\n * Configurations of storage for different environments.\n * @enum {!fireauth.storage.Factory.EnvConfigType}\n */\nfireauth.storage.Factory.EnvConfig = {\n  BROWSER: {\n    persistent: fireauth.storage.LocalStorage,\n    temporary: fireauth.storage.SessionStorage\n  },\n  NODE: {\n    persistent: fireauth.storage.LocalStorage,\n    temporary: fireauth.storage.SessionStorage\n  },\n  REACT_NATIVE: {\n    persistent: fireauth.storage.AsyncStorage,\n    temporary: fireauth.storage.NullStorage\n  },\n  WORKER: {\n    persistent: fireauth.storage.LocalStorage,\n    temporary: fireauth.storage.NullStorage\n  }\n};\n\n\n/**\n * Detects the current environment and returns the appropriate environment\n * configuration.\n * @return {!fireauth.storage.Factory.EnvConfigType}\n */\nfireauth.storage.Factory.getEnvConfig = function() {\n  var envMap = {};\n  envMap[fireauth.util.Env.BROWSER] =\n      fireauth.storage.Factory.EnvConfig.BROWSER;\n  envMap[fireauth.util.Env.NODE] =\n      fireauth.storage.Factory.EnvConfig.NODE;\n  envMap[fireauth.util.Env.REACT_NATIVE] =\n      fireauth.storage.Factory.EnvConfig.REACT_NATIVE;\n  envMap[fireauth.util.Env.WORKER] =\n      fireauth.storage.Factory.EnvConfig.WORKER;    \n  return envMap[fireauth.util.getEnvironment()];\n};\n\n\n/**\n * @return {!fireauth.storage.Storage} The persistent storage instance.\n */\nfireauth.storage.Factory.prototype.makePersistentStorage = function() {\n  if (fireauth.util.persistsStorageWithIndexedDB()) {\n    // If persistent storage is implemented using indexedDB, use indexedDB.\n    // Use HybridIndexedDB instead of indexedDB directly since this will\n    // fallback to a fallback storage when indexedDB is not supported (private\n    // browsing mode, etc).\n    return new fireauth.storage.HybridIndexedDB(\n        fireauth.util.isWorker() ?\n        new fireauth.storage.InMemoryStorage() : new this.env_.persistent());\n  }\n  return new this.env_.persistent();\n};\n\n\n/**\n * @return {!fireauth.storage.Storage} The temporary storage instance.\n */\nfireauth.storage.Factory.prototype.makeTemporaryStorage = function() {\n  return new this.env_.temporary();\n};\n\n\n/**\n * @return {!fireauth.storage.Storage} An in memory storage instance.\n */\nfireauth.storage.Factory.prototype.makeInMemoryStorage = function() {\n  return new fireauth.storage.InMemoryStorage();\n};\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines utilities for session management.\n */\n\ngoog.provide('fireauth.authStorage');\ngoog.provide('fireauth.authStorage.Key');\ngoog.provide('fireauth.authStorage.Manager');\ngoog.provide('fireauth.authStorage.Persistence');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.storage.Factory');\ngoog.require('fireauth.storage.IndexedDB');\ngoog.require('fireauth.storage.Storage');\ngoog.require('fireauth.util');\ngoog.require('goog.Promise');\ngoog.require('goog.array');\ngoog.require('goog.events');\ngoog.require('goog.object');\n\n\n\n/**\n * The namespace for Firebase Auth storage.\n * @private @const {string}\n */\nfireauth.authStorage.NAMESPACE_ = 'firebase';\n\n\n/**\n * The separator for Firebase Auth storage with App ID key.\n * @private @const {string}\n */\nfireauth.authStorage.SEPARATOR_ = ':';\n\n\n/**\n * @const {number} The IE 10 localStorage cross tab synchronization delay in\n *     milliseconds.\n */\nfireauth.authStorage.IE10_LOCAL_STORAGE_SYNC_DELAY = 10;\n\n\n/**\n * Enums for Auth state persistence.\n * @enum {string}\n */\nfireauth.authStorage.Persistence = {\n  // State will persist even when the browser window is closed or the activity\n  // is destroyed in react-native.\n  LOCAL: 'local',\n  // State is only stored in memory and will be cleared when the window or\n  // activity is refreshed.\n  NONE: 'none',\n  // State will only persist in current session/tab, relevant to web only, and\n  // will be cleared when the tab is closed.\n  SESSION: 'session'\n};\n\n\n/**\n * Validates that an argument is a valid persistence value. If an invalid type\n * is specified, an error is thrown synchronously.\n * @param {*} arg The argument to validate.\n */\nfireauth.authStorage.validatePersistenceArgument =\n    function(arg) {\n  // Invalid type error.\n  var invalidTypeError = new fireauth.AuthError(\n      fireauth.authenum.Error.INVALID_PERSISTENCE);\n  // Unsupported type error.\n  var unsupportedTypeError = new fireauth.AuthError(\n      fireauth.authenum.Error.UNSUPPORTED_PERSISTENCE);\n  // Check if the persistence type is a valid one.\n  // Throw invalid type error if not valid.\n  if (!goog.object.containsValue(fireauth.authStorage.Persistence, arg) ||\n      // goog.object.containsValue(fireauth.authStorage.Persistence, ['none'])\n      // returns true.\n      typeof arg !== 'string') {\n    throw invalidTypeError;\n  }\n  // Validate if the specified type is supported in the current environment.\n  switch (fireauth.util.getEnvironment()) {\n    case fireauth.util.Env.REACT_NATIVE:\n      // This is only supported in a browser.\n      if (arg === fireauth.authStorage.Persistence.SESSION) {\n        throw unsupportedTypeError;\n      }\n      break;\n    case fireauth.util.Env.NODE:\n      // Only none is supported in Node.js.\n      if (arg !== fireauth.authStorage.Persistence.NONE) {\n        throw unsupportedTypeError;\n      }\n      break;\n    case fireauth.util.Env.WORKER:\n      // In a worker environment, either LOCAL or NONE are supported.\n      // If indexedDB not supported and LOCAL provided, throw an error.\n      if (arg === fireauth.authStorage.Persistence.SESSION ||\n          (!fireauth.storage.IndexedDB.isAvailable() &&\n           arg !== fireauth.authStorage.Persistence.NONE)) {\n        throw unsupportedTypeError;\n      }\n      break;\n    case fireauth.util.Env.BROWSER:\n    default:\n      // This is restricted by what the browser supports.\n      if (!fireauth.util.isWebStorageSupported() &&\n          arg !== fireauth.authStorage.Persistence.NONE) {\n        throw unsupportedTypeError;\n      }\n      break;\n  }\n};\n\n\n/**\n * Storage key metadata.\n * @typedef {{name: string, persistent: !fireauth.authStorage.Persistence}}\n */\nfireauth.authStorage.Key;\n\n\n/**\n * Storage manager.\n * @param {string} namespace The optional namespace.\n * @param {string} separator The optional separator.\n * @param {boolean} safariLocalStorageNotSynced Whether browser has Safari\n *     iframe restriction with storage event triggering but storage not updated.\n * @param {boolean} runsInBackground Whether browser can detect storage event\n *     when it had already been pushed to the background. This may happen in\n *     some mobile browsers. A localStorage change in the foreground window\n *     will not be detected in the background window via the storage event.\n *     This was detected in iOS 7.x mobile browsers.\n * @param {boolean} webStorageSupported Whether browser web storage is\n *     supported.\n * @constructor @struct @final\n */\nfireauth.authStorage.Manager = function(\n    namespace,\n    separator,\n    safariLocalStorageNotSynced,\n    runsInBackground,\n    webStorageSupported) {\n  /** @const @private {string} Storage namespace. */\n  this.namespace_ = namespace;\n  /** @const @private {string} Storage namespace key separator. */\n  this.separator_ = separator;\n  /**\n   * @const @private {boolean} Whether browser has Safari iframe restriction\n   *     with storage event triggering but storage not updated.\n   */\n  this.safariLocalStorageNotSynced_ = safariLocalStorageNotSynced;\n  /**\n   *  @private {boolean} Whether browser can detect storage event when it\n   *     had already been pushed to the background. This may happen in some\n   *     mobile browsers.\n   */\n  this.runsInBackground_ = runsInBackground;\n  /**  @const @private {boolean} Whether browser web storage is supported. */\n  this.webStorageSupported_ = webStorageSupported;\n\n  /**\n   * @const @private {!Object.<string, !Array<function()>>} The storage event\n   *     key to listeners map.\n   */\n  this.listeners_ = {};\n\n  var storageFactory = fireauth.storage.Factory.getInstance();\n  try {\n    /**\n     * @private {!fireauth.storage.Storage} Persistence storage.\n     */\n    this.persistentStorage_ = storageFactory.makePersistentStorage();\n  } catch (e) {\n    // Default to in memory storage if the preferred persistent storage is not\n    // supported.\n    this.persistentStorage_ = storageFactory.makeInMemoryStorage();\n    // Do not use indexedDB fallback.\n    this.localStorageNotSynchronized_ = false;\n    // Do not set polling functions on window.localStorage.\n    this.runsInBackground_ = true;\n  }\n  try {\n    /**\n     * @private {!fireauth.storage.Storage} Temporary session storage.\n     */\n    this.temporaryStorage_ = storageFactory.makeTemporaryStorage();\n  } catch (e) {\n    // Default to in memory storage if the preferred temporary storage is not\n    // supported. This should be a different in memory instance as the\n    // persistent storage, since the same key could be available for both types\n    // of storage.\n    this.temporaryStorage_ = storageFactory.makeInMemoryStorage();\n  }\n  /**\n   * @private {!fireauth.storage.Storage} In memory storage.\n   */\n  this.inMemoryStorage_ = storageFactory.makeInMemoryStorage();\n\n  /**\n   * @const @private {function(!goog.events.BrowserEvent)|\n   *                  function(!Array<string>)} Storage change handler.\n   */\n  this.storageChangeEventHandler_ = goog.bind(this.storageChangeEvent_, this);\n  /** @private {!Object.<string, *>} Local map for localStorage. */\n  this.localMap_ = {};\n};\n\n\n/**\n * @return {!fireauth.authStorage.Manager} The default Auth storage manager\n *     instance.\n */\nfireauth.authStorage.Manager.getInstance = function() {\n  // Creates the default instance for Auth storage maanger.\n  if (!fireauth.authStorage.Manager.instance_) {\n    /**\n     * @private {?fireauth.authStorage.Manager} The default storage manager\n     *     instance.\n     */\n    fireauth.authStorage.Manager.instance_ = new fireauth.authStorage.Manager(\n        fireauth.authStorage.NAMESPACE_,\n        fireauth.authStorage.SEPARATOR_,\n        fireauth.util.isSafariLocalStorageNotSynced(),\n        fireauth.util.runsInBackground(),\n        fireauth.util.isWebStorageSupported());\n  }\n  return fireauth.authStorage.Manager.instance_;\n};\n\n\n/** Clears storage manager instances. This is used for testing. */\nfireauth.authStorage.Manager.clear = function() {\n  fireauth.authStorage.Manager.instance_ = null;\n};\n\n\n/**\n * Returns the storage corresponding to the specified persistence.\n * @param {!fireauth.authStorage.Persistence} persistent The type of storage\n *     persistence.\n * @return {!fireauth.storage.Storage} The corresponding storage instance.\n * @private\n */\nfireauth.authStorage.Manager.prototype.getStorage_ = function(persistent) {\n  switch (persistent) {\n    case fireauth.authStorage.Persistence.SESSION:\n      return this.temporaryStorage_;\n    case fireauth.authStorage.Persistence.NONE:\n      return this.inMemoryStorage_;\n    case fireauth.authStorage.Persistence.LOCAL:\n    default:\n      return this.persistentStorage_;\n  }\n};\n\n\n/**\n * Constructs the corresponding storage key name.\n * @param {fireauth.authStorage.Key} dataKey The key under which the value is\n *     stored.\n * @param {?string=} opt_id This ID associates storage values with specific\n *     apps.\n * @return {string} The corresponding key name with namespace prefixed.\n * @private\n */\nfireauth.authStorage.Manager.prototype.getKeyName_ = function(dataKey, opt_id) {\n  return this.namespace_ + this.separator_ + dataKey.name +\n      (opt_id ? this.separator_ + opt_id : '');\n};\n\n\n/**\n * Migrates window.localStorage to the provided persistent storage.\n * @param {fireauth.authStorage.Key} dataKey The key under which the persistent\n *     value is supposed to be stored.\n * @param {?string=} opt_id When operating in multiple app mode, this ID\n *     associates storage values with specific apps.\n * @return {!goog.Promise<void>} A promise that resolves when the data stored\n *     in window.localStorage is migrated to the provided persistent storage\n *     identified by the provided data key.\n */\nfireauth.authStorage.Manager.prototype.migrateFromLocalStorage =\n    function(dataKey, opt_id) {\n  var self = this;\n  var key = this.getKeyName_(dataKey, opt_id);\n  var storage = this.getStorage_(dataKey.persistent);\n  // Get data stored in the default persistent storage identified by dataKey.\n  return this.get(dataKey, opt_id).then(function(response) {\n    // Get the stored value in window.localStorage if available.\n    var oldStorageValue = null;\n    try {\n      oldStorageValue = fireauth.util.parseJSON(\n          goog.global['localStorage']['getItem'](key));\n    } catch (e) {\n      // Set value as null. This will resolve the promise immediately.\n    }\n    // If data is stored in window.localStorage but no data is available in\n    // default persistent storage, migrate data from window.localStorage to\n    // default persistent storage.\n    if (oldStorageValue && !response) {\n      // This condition may fail in situations where a user opens a tab with\n      // an old version while using a tab with a new version, or when a\n      // developer switches back and forth between and old and new version of\n      // the library.\n      goog.global['localStorage']['removeItem'](key);\n      // Migrate the value to new default persistent storage.\n      return self.set(dataKey, oldStorageValue, opt_id);\n    } else if (oldStorageValue &&\n               response &&\n               storage.type != fireauth.storage.Storage.Type.LOCAL_STORAGE) {\n      // Data stored in both localStorage and new persistent storage (eg.\n      // indexedDB) for some reason.\n      // This could happen if the developer is migrating back and forth.\n      // The new default persistent storage (eg. indexedDB) takes precedence.\n      goog.global['localStorage']['removeItem'](key);\n    }\n  });\n};\n\n\n/**\n * Gets the stored value from the corresponding storage.\n * @param {fireauth.authStorage.Key} dataKey The key under which the value is\n *     stored.\n * @param {?string=} opt_id When operating in multiple app mode, this ID\n *     associates storage values with specific apps.\n * @return {!goog.Promise} A Promise that resolves with the stored value.\n */\nfireauth.authStorage.Manager.prototype.get = function(dataKey, opt_id) {\n  var keyName = this.getKeyName_(dataKey, opt_id);\n  return this.getStorage_(dataKey.persistent).get(keyName);\n};\n\n\n/**\n * Removes the stored value from the corresponding storage.\n * @param {fireauth.authStorage.Key} dataKey The key under which the value is\n *     stored.\n * @param {?string=} opt_id When operating in multiple app mode, this ID\n *     associates storage values with specific apps.\n * @return {!goog.Promise<void>} A Promise that resolves when the operation is\n *     completed.\n */\nfireauth.authStorage.Manager.prototype.remove = function(dataKey, opt_id) {\n  var keyName = this.getKeyName_(dataKey, opt_id);\n  // Keep local map up to date for requested key if persistent storage is used.\n  if (dataKey.persistent == fireauth.authStorage.Persistence.LOCAL) {\n    this.localMap_[keyName] = null;\n  }\n  return this.getStorage_(dataKey.persistent).remove(keyName);\n};\n\n\n/**\n * Stores the value in the corresponding storage.\n * @param {fireauth.authStorage.Key} dataKey The key under which the value is\n *     stored.\n * @param {*} value The value to be stored.\n * @param {?string=} opt_id When operating in multiple app mode, this ID\n *     associates storage values with specific apps.\n * @return {!goog.Promise<void>} A Promise that resolves when the operation is\n *     completed.\n */\nfireauth.authStorage.Manager.prototype.set = function(dataKey, value, opt_id) {\n  var keyName = this.getKeyName_(dataKey, opt_id);\n  var self = this;\n  var storage = this.getStorage_(dataKey.persistent);\n  return storage.set(keyName, value)\n      .then(function() {\n        return storage.get(keyName);\n      })\n      .then(function(serializedValue) {\n        // Keep local map up to date for requested key if persistent storage is\n        // used.\n        if (dataKey.persistent == fireauth.authStorage.Persistence.LOCAL) {\n          self.localMap_[keyName] = serializedValue;\n        }\n      });\n};\n\n\n/**\n * @param {fireauth.authStorage.Key} dataKey The key under which the value is\n *     stored.\n * @param {?string} id When operating in multiple app mode, this ID associates\n *     storage values with specific apps.\n * @param {function()} listener The callback listener to run on storage event\n *     related to key.\n */\nfireauth.authStorage.Manager.prototype.addListener =\n    function(dataKey, id, listener) {\n  var key = this.getKeyName_(dataKey, id);\n  // Initialize local map for current key if web storage is supported.\n  if (this.webStorageSupported_) {\n    this.localMap_[key] = goog.global['localStorage']['getItem'](key);\n  }\n  if (goog.object.isEmpty(this.listeners_)) {\n    // Start listeners.\n    this.startListeners_();\n  }\n  if (!this.listeners_[key]) {\n    this.listeners_[key] = [];\n  }\n  this.listeners_[key].push(listener);\n};\n\n\n/**\n * @param {fireauth.authStorage.Key} dataKey The key under which the value is\n *     stored.\n * @param {?string} id When operating in multiple app mode, this ID associates\n *     storage values with specific apps.\n * @param {function()} listener The listener to remove.\n */\nfireauth.authStorage.Manager.prototype.removeListener =\n    function(dataKey, id, listener) {\n  var key = this.getKeyName_(dataKey, id);\n  if (this.listeners_[key]) {\n    goog.array.removeAllIf(\n        this.listeners_[key],\n        function(ele) {\n          return ele == listener;\n        });\n    if (this.listeners_[key].length == 0) {\n      delete this.listeners_[key];\n    }\n  }\n  if (goog.object.isEmpty(this.listeners_)) {\n    // Stop listeners.\n    this.stopListeners_();\n  }\n};\n\n\n/**\n * The delay to wait between continuous checks of localStorage on browsers where\n * tabs do not run in the background. After each interval wait, we check for\n * external changes in localStorage that were not detected in the current tab.\n * @const {number}\n * @private\n */\nfireauth.authStorage.Manager.LOCAL_STORAGE_POLLING_TIMER_ = 1000;\n\n\n/**\n * Starts all storage event listeners.\n * @private\n */\nfireauth.authStorage.Manager.prototype.startListeners_ = function() {\n  this.getStorage_(fireauth.authStorage.Persistence.LOCAL)\n      .addStorageListener(this.storageChangeEventHandler_);\n  // TODO: refactor this implementation to be handled by the underlying\n  // storage mechanism.\n  if (!this.runsInBackground_ &&\n      // Add an exception for browsers that persist storage with indexedDB, we\n      // should stick with indexedDB listener implementation in that case.\n      !fireauth.util.persistsStorageWithIndexedDB() &&\n      // Confirm browser web storage is supported as polling relies on it.\n      this.webStorageSupported_) {\n    this.startManualListeners_();\n  }\n};\n\n/**\n * Starts manual polling function to detect storage event changes.\n * @private\n */\nfireauth.authStorage.Manager.prototype.startManualListeners_ = function() {\n  var self = this;\n  this.stopManualListeners_();\n  /** @private {?number} The interval timer for manual storage checking. */\n  this.manualListenerTimer_ = setInterval(function() {\n    // Check all keys with listeners on them.\n    for (var key in self.listeners_) {\n      // Get value from localStorage.\n      var currentValue = goog.global['localStorage']['getItem'](key);\n      var oldValue = self.localMap_[key];\n      // If local map value does not match, trigger listener with storage event.\n      if (currentValue != oldValue) {\n        self.localMap_[key] = currentValue;\n        var event = new goog.events.BrowserEvent(/** @type {!Event} */ ({\n          type: 'storage',\n          key: key,\n          target: window,\n          oldValue: oldValue,\n          newValue: currentValue,\n          // Differentiate this simulated event from the real storage event.\n          poll: true\n        }));\n        self.storageChangeEvent_(event);\n      }\n    }\n  }, fireauth.authStorage.Manager.LOCAL_STORAGE_POLLING_TIMER_);\n};\n\n\n/**\n * Stops manual polling function to detect storage event changes.\n * @private\n */\nfireauth.authStorage.Manager.prototype.stopManualListeners_ = function() {\n  if (this.manualListenerTimer_) {\n    clearInterval(this.manualListenerTimer_);\n    this.manualListenerTimer_ = null;\n  }\n};\n\n\n/**\n * Stops all storage event listeners.\n * @private\n */\nfireauth.authStorage.Manager.prototype.stopListeners_ = function() {\n  this.getStorage_(fireauth.authStorage.Persistence.LOCAL)\n      .removeStorageListener(this.storageChangeEventHandler_);\n  this.stopManualListeners_();\n};\n\n\n/**\n * @param {!goog.events.BrowserEvent|!Array<string>} data The storage event\n *     triggered or the array of keys modified.\n * @private\n */\nfireauth.authStorage.Manager.prototype.storageChangeEvent_ = function(data) {\n  if (data && data.getBrowserEvent) {\n    var event = /** @type {!goog.events.BrowserEvent} */ (data);\n    var key = event.getBrowserEvent().key;\n    // Key would be null in some situations, like when localStorage is cleared\n    // from the browser developer tools.\n    if (key == null) {\n      // For all keys of interest.\n      for (var keyName in this.listeners_) {\n        // Check if something changed in this key's real value.\n        var storedValue = this.localMap_[keyName];\n        // localStorage returns null when a field is not found.\n        if (typeof storedValue === 'undefined') {\n          storedValue = null;\n        }\n        var realValue = goog.global['localStorage']['getItem'](keyName);\n        if (realValue !== storedValue) {\n          // Update local map with real value.\n          this.localMap_[keyName] = realValue;\n          // Trigger that key's listener.\n          this.callListeners_(keyName);\n        }\n      }\n      return;\n    }\n    // Check if the key is Firebase Auth related, otherwise ignore.\n    if (key.indexOf(this.namespace_ + this.separator_) != 0 ||\n        // Ignore keys that have no listeners.\n        !this.listeners_[key]) {\n      return;\n    }\n    // Check the mechanism how this event was detected.\n    // The first event will dictate the mechanism to be used.\n    // Do not use hasOwnProperty('poll') as poll gets obfuscated.\n    if (typeof event.getBrowserEvent().poll !== 'undefined') {\n      // Environment detects storage changes via polling.\n      // Remove storage event listener to prevent possible event duplication.\n      this.getStorage_(fireauth.authStorage.Persistence.LOCAL)\n          .removeStorageListener(this.storageChangeEventHandler_);\n    } else {\n      // Environment detects storage changes via storage event listener.\n      // Remove polling listener to prevent possible event duplication.\n      this.stopManualListeners_();\n    }\n    // Safari embedded iframe. Storage event will trigger with the delta changes\n    // but no changes will be applied to the iframe localStorage.\n    if (this.safariLocalStorageNotSynced_) {\n      // Get current iframe page value, old value and new value.\n      var currentValue = goog.global['localStorage']['getItem'](key);\n      var newValue = event.getBrowserEvent().newValue;\n      // Value not synchronized, synchronize manually.\n      if (newValue !== currentValue) {\n        if (newValue !== null) {\n          // Value changed from current value.\n          goog.global['localStorage']['setItem'](key, newValue);\n        } else {\n          // Current value deleted.\n          goog.global['localStorage']['removeItem'](key);\n        }\n      } else {\n        // Already detected and processed, do not trigger listeners again.\n        if (this.localMap_[key] === newValue &&\n            // Real storage event.\n            typeof event.getBrowserEvent().poll === 'undefined') {\n          return;\n        }\n      }\n    }\n    var self = this;\n    var triggerListeners = function() {\n      // Keep local map up to date in case storage event is triggered before\n      // poll.\n      if (typeof event.getBrowserEvent().poll === 'undefined' &&\n          self.localMap_[key] === goog.global['localStorage']['getItem'](key)) {\n        // Real storage event which has already been detected, do nothing.\n        // This seems to trigger in some IE browsers for some reason.\n        return;\n      }\n      self.localMap_[key] = goog.global['localStorage']['getItem'](key);\n      self.callListeners_(key);\n    };\n    if (fireauth.util.isIe10() &&\n        goog.global['localStorage']['getItem'](key) !==\n        event.getBrowserEvent().newValue &&\n        event.getBrowserEvent().newValue !== event.getBrowserEvent().oldValue) {\n      // IE 10 has this weird bug where a storage event would trigger with the\n      // correct key, oldValue and newValue but localStorage.getItem(key) does\n      // not yield the updated value until a few milliseconds. This ensures this\n      // recovers from that situation.\n      setTimeout(\n          triggerListeners, fireauth.authStorage.IE10_LOCAL_STORAGE_SYNC_DELAY);\n    } else {\n      triggerListeners();\n    }\n  } else {\n    var keys = /** @type {!Array<string>} */ (data);\n    goog.array.forEach(keys, goog.bind(this.callListeners_, this));\n  }\n};\n\n\n/**\n * Calls all listeners for specified storage event key.\n * @param {string} key The storage event key whose listeners are to be run.\n * @private\n */\nfireauth.authStorage.Manager.prototype.callListeners_ = function(key) {\n  if (this.listeners_[key]) {\n    goog.array.forEach(\n        this.listeners_[key],\n        function(listener) {\n          listener();\n        });\n  }\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the fireauth.storage.AuthEventManager class used by\n * the iframe to retrieve and delete Auth events triggered through an OAuth\n * flow.\n */\n\ngoog.provide('fireauth.storage.AuthEventManager');\ngoog.provide('fireauth.storage.AuthEventManager.Keys');\n\ngoog.require('fireauth.AuthEvent');\ngoog.require('fireauth.authStorage');\n\n\n/**\n * Defines the Auth event storage manager. It provides methods to\n * load and delete Auth events as well as listen to external OAuth changes on\n * them.\n * @param {string} appId The Auth event's application ID.\n * @param {?fireauth.authStorage.Manager=} opt_manager The underlying storage\n *     manager to use. If none is provided, the default global instance is used.\n * @constructor @struct @final\n */\nfireauth.storage.AuthEventManager = function(appId, opt_manager) {\n  /** @const @private{string} appId The Auth event's application ID. */\n  this.appId_ = appId;\n  /**\n   * @const @private{!fireauth.authStorage.Manager} The underlying storage\n   *     manager.\n   */\n  this.manager_ = opt_manager || fireauth.authStorage.Manager.getInstance();\n};\n\n\n/**\n * Valid keys for Auth event manager data.\n * @enum {!fireauth.authStorage.Key}\n */\nfireauth.storage.AuthEventManager.Keys = {\n  AUTH_EVENT: {\n    name: 'authEvent',\n    persistent: fireauth.authStorage.Persistence.LOCAL\n  },\n  REDIRECT_EVENT: {\n    name: 'redirectEvent',\n    persistent: fireauth.authStorage.Persistence.SESSION\n  }\n};\n\n\n/**\n * @return {!goog.Promise<?fireauth.AuthEvent>} A promise that resolves on\n *     success with the stored Auth event.\n */\nfireauth.storage.AuthEventManager.prototype.getAuthEvent = function() {\n  return this.manager_.get(\n      fireauth.storage.AuthEventManager.Keys.AUTH_EVENT, this.appId_)\n      .then(function(response) {\n        return fireauth.AuthEvent.fromPlainObject(response);\n      });\n};\n\n\n/**\n * Removes the identifier's Auth event if it exists.\n * @return {!goog.Promise<void>} A promise that resolves on success.\n */\nfireauth.storage.AuthEventManager.prototype.removeAuthEvent = function() {\n  return this.manager_.remove(\n      fireauth.storage.AuthEventManager.Keys.AUTH_EVENT, this.appId_);\n};\n\n\n/**\n * Adds a listener to Auth event for App ID provided.\n * @param {!function()} listener The listener to run on Auth event.\n */\nfireauth.storage.AuthEventManager.prototype.addAuthEventListener =\n    function(listener) {\n  this.manager_.addListener(\n      fireauth.storage.AuthEventManager.Keys.AUTH_EVENT, this.appId_, listener);\n};\n\n\n/**\n * Removes a listener to Auth event for App ID provided.\n * @param {!function()} listener The listener to run on Auth event.\n */\nfireauth.storage.AuthEventManager.prototype.removeAuthEventListener =\n    function(listener) {\n  this.manager_.removeListener(\n      fireauth.storage.AuthEventManager.Keys.AUTH_EVENT, this.appId_, listener);\n};\n\n\n/**\n * @return {!goog.Promise<?fireauth.AuthEvent>} A promise that resolves on\n *     success with the stored redirect Auth event.\n */\nfireauth.storage.AuthEventManager.prototype.getRedirectEvent =\n    function() {\n  return this.manager_.get(\n      fireauth.storage.AuthEventManager.Keys.REDIRECT_EVENT,\n      this.appId_).then(function(response) {\n        return fireauth.AuthEvent.fromPlainObject(response);\n      });\n};\n\n\n/**\n * Removes the identifier's redirect Auth event if it exists.\n * @return {!goog.Promise<void>} A promise that resolves on success.\n */\nfireauth.storage.AuthEventManager.prototype.removeRedirectEvent = function() {\n  return this.manager_.remove(\n      fireauth.storage.AuthEventManager.Keys.REDIRECT_EVENT, this.appId_);\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Base class for SHA-2 cryptographic hash.\n *\n * Variable names follow the notation in FIPS PUB 180-3:\n * http://csrc.nist.gov/publications/fips/fips180-3/fips180-3_final.pdf.\n *\n * Some code similar to SHA1 are borrowed from sha1.js written by mschilder@.\n */\n\ngoog.provide('goog.crypt.Sha2');\n\ngoog.require('goog.array');\ngoog.require('goog.asserts');\ngoog.require('goog.crypt.Hash');\n\n\n\n/**\n * SHA-2 cryptographic hash constructor.\n * This constructor should not be used directly to create the object. Rather,\n * one should use the constructor of the sub-classes.\n * @param {number} numHashBlocks The size of output in 16-byte blocks.\n * @param {!Array<number>} initHashBlocks The hash-specific initialization\n * @constructor\n * @extends {goog.crypt.Hash}\n * @struct\n */\ngoog.crypt.Sha2 = function(numHashBlocks, initHashBlocks) {\n  goog.crypt.Sha2.base(this, 'constructor');\n\n  this.blockSize = goog.crypt.Sha2.BLOCKSIZE_;\n\n  /**\n   * A chunk holding the currently processed message bytes. Once the chunk has\n   * 64 bytes, we feed it into computeChunk_ function and reset this.chunk_.\n   * @private {!Array<number>|!Uint8Array}\n   */\n  this.chunk_ = goog.global['Uint8Array'] ? new Uint8Array(this.blockSize) :\n                                            new Array(this.blockSize);\n\n  /**\n   * Current number of bytes in this.chunk_.\n   * @private {number}\n   */\n  this.inChunk_ = 0;\n\n  /**\n   * Total number of bytes in currently processed message.\n   * @private {number}\n   */\n  this.total_ = 0;\n\n\n  /**\n   * Holds the previous values of accumulated hash a-h in the computeChunk_\n   * function.\n   * @private {!Array<number>|!Int32Array}\n   */\n  this.hash_ = [];\n\n  /**\n   * The number of output hash blocks (each block is 4 bytes long).\n   * @private {number}\n   */\n  this.numHashBlocks_ = numHashBlocks;\n\n  /**\n   * @private {!Array<number>} initHashBlocks\n   */\n  this.initHashBlocks_ = initHashBlocks;\n\n  /**\n   * Temporary array used in chunk computation.  Allocate here as a\n   * member rather than as a local within computeChunk_() as a\n   * performance optimization to reduce the number of allocations and\n   * reduce garbage collection.\n   * @private {!Int32Array|!Array<number>}\n   */\n  this.w_ = goog.global['Int32Array'] ? new Int32Array(64) : new Array(64);\n\n  if (goog.crypt.Sha2.Kx_ === undefined) {\n    // This is the first time this constructor has been called.\n    if (goog.global['Int32Array']) {\n      // Typed arrays exist\n      goog.crypt.Sha2.Kx_ = new Int32Array(goog.crypt.Sha2.K_);\n    } else {\n      // Typed arrays do not exist\n      goog.crypt.Sha2.Kx_ = goog.crypt.Sha2.K_;\n    }\n  }\n\n  this.reset();\n};\ngoog.inherits(goog.crypt.Sha2, goog.crypt.Hash);\n\n\n/**\n * The block size\n * @private {number}\n */\ngoog.crypt.Sha2.BLOCKSIZE_ = 512 / 8;\n\n\n/**\n * Contains data needed to pad messages less than BLOCK_SIZE_ bytes.\n * @private {!Array<number>}\n */\ngoog.crypt.Sha2.PADDING_ = goog.array.concat(\n    128, goog.array.repeat(0, goog.crypt.Sha2.BLOCKSIZE_ - 1));\n\n\n/** @override */\ngoog.crypt.Sha2.prototype.reset = function() {\n  this.inChunk_ = 0;\n  this.total_ = 0;\n  this.hash_ = goog.global['Int32Array'] ?\n      new Int32Array(this.initHashBlocks_) :\n      goog.array.clone(this.initHashBlocks_);\n};\n\n\n/**\n * Helper function to compute the hashes for a given 512-bit message chunk.\n * @private\n */\ngoog.crypt.Sha2.prototype.computeChunk_ = function() {\n  var chunk = this.chunk_;\n  goog.asserts.assert(chunk.length == this.blockSize);\n  var rounds = 64;\n\n  // Divide the chunk into 16 32-bit-words.\n  var w = this.w_;\n  var index = 0;\n  var offset = 0;\n  while (offset < chunk.length) {\n    w[index++] = (chunk[offset] << 24) | (chunk[offset + 1] << 16) |\n        (chunk[offset + 2] << 8) | (chunk[offset + 3]);\n    offset = index * 4;\n  }\n\n  // Extend the w[] array to be the number of rounds.\n  for (var i = 16; i < rounds; i++) {\n    var w_15 = w[i - 15] | 0;\n    var s0 = ((w_15 >>> 7) | (w_15 << 25)) ^ ((w_15 >>> 18) | (w_15 << 14)) ^\n        (w_15 >>> 3);\n    var w_2 = w[i - 2] | 0;\n    var s1 = ((w_2 >>> 17) | (w_2 << 15)) ^ ((w_2 >>> 19) | (w_2 << 13)) ^\n        (w_2 >>> 10);\n\n    // As a performance optimization, construct the sum a pair at a time\n    // with casting to integer (bitwise OR) to eliminate unnecessary\n    // double<->integer conversions.\n    var partialSum1 = ((w[i - 16] | 0) + s0) | 0;\n    var partialSum2 = ((w[i - 7] | 0) + s1) | 0;\n    w[i] = (partialSum1 + partialSum2) | 0;\n  }\n\n  var a = this.hash_[0] | 0;\n  var b = this.hash_[1] | 0;\n  var c = this.hash_[2] | 0;\n  var d = this.hash_[3] | 0;\n  var e = this.hash_[4] | 0;\n  var f = this.hash_[5] | 0;\n  var g = this.hash_[6] | 0;\n  var h = this.hash_[7] | 0;\n  for (var i = 0; i < rounds; i++) {\n    var S0 = ((a >>> 2) | (a << 30)) ^ ((a >>> 13) | (a << 19)) ^\n        ((a >>> 22) | (a << 10));\n    var maj = ((a & b) ^ (a & c) ^ (b & c));\n    var t2 = (S0 + maj) | 0;\n    var S1 = ((e >>> 6) | (e << 26)) ^ ((e >>> 11) | (e << 21)) ^\n        ((e >>> 25) | (e << 7));\n    var ch = ((e & f) ^ ((~e) & g));\n\n    // As a performance optimization, construct the sum a pair at a time\n    // with casting to integer (bitwise OR) to eliminate unnecessary\n    // double<->integer conversions.\n    var partialSum1 = (h + S1) | 0;\n    var partialSum2 = (ch + (goog.crypt.Sha2.Kx_[i] | 0)) | 0;\n    var partialSum3 = (partialSum2 + (w[i] | 0)) | 0;\n    var t1 = (partialSum1 + partialSum3) | 0;\n\n    h = g;\n    g = f;\n    f = e;\n    e = (d + t1) | 0;\n    d = c;\n    c = b;\n    b = a;\n    a = (t1 + t2) | 0;\n  }\n\n  this.hash_[0] = (this.hash_[0] + a) | 0;\n  this.hash_[1] = (this.hash_[1] + b) | 0;\n  this.hash_[2] = (this.hash_[2] + c) | 0;\n  this.hash_[3] = (this.hash_[3] + d) | 0;\n  this.hash_[4] = (this.hash_[4] + e) | 0;\n  this.hash_[5] = (this.hash_[5] + f) | 0;\n  this.hash_[6] = (this.hash_[6] + g) | 0;\n  this.hash_[7] = (this.hash_[7] + h) | 0;\n};\n\n\n/** @override */\ngoog.crypt.Sha2.prototype.update = function(message, opt_length) {\n  if (opt_length === undefined) {\n    opt_length = message.length;\n  }\n  // Process the message from left to right up to |opt_length| bytes.\n  // When we get a 512-bit chunk, compute the hash of it and reset\n  // this.chunk_. The message might not be multiple of 512 bits so we\n  // might end up with a chunk that is less than 512 bits. We store\n  // such partial chunk in this.chunk_ and it will be filled up later\n  // in digest().\n  var n = 0;\n  var inChunk = this.inChunk_;\n\n  // The input message could be either byte array of string.\n  if (typeof message === 'string') {\n    while (n < opt_length) {\n      this.chunk_[inChunk++] = message.charCodeAt(n++);\n      if (inChunk == this.blockSize) {\n        this.computeChunk_();\n        inChunk = 0;\n      }\n    }\n  } else if (goog.isArrayLike(message)) {\n    while (n < opt_length) {\n      var b = message[n++];\n      if (!('number' == typeof b && 0 <= b && 255 >= b && b == (b | 0))) {\n        throw new Error('message must be a byte array');\n      }\n      this.chunk_[inChunk++] = b;\n      if (inChunk == this.blockSize) {\n        this.computeChunk_();\n        inChunk = 0;\n      }\n    }\n  } else {\n    throw new Error('message must be string or array');\n  }\n\n  // Record the current bytes in chunk to support partial update.\n  this.inChunk_ = inChunk;\n\n  // Record total message bytes we have processed so far.\n  this.total_ += opt_length;\n};\n\n\n/** @override */\ngoog.crypt.Sha2.prototype.digest = function() {\n  var digest = [];\n  var totalBits = this.total_ * 8;\n\n  // Append pad 0x80 0x00*.\n  if (this.inChunk_ < 56) {\n    this.update(goog.crypt.Sha2.PADDING_, 56 - this.inChunk_);\n  } else {\n    this.update(\n        goog.crypt.Sha2.PADDING_, this.blockSize - (this.inChunk_ - 56));\n  }\n\n  // Append # bits in the 64-bit big-endian format.\n  for (var i = 63; i >= 56; i--) {\n    this.chunk_[i] = totalBits & 255;\n    totalBits /= 256;  // Don't use bit-shifting here!\n  }\n  this.computeChunk_();\n\n  // Finally, output the result digest.\n  var n = 0;\n  for (var i = 0; i < this.numHashBlocks_; i++) {\n    for (var j = 24; j >= 0; j -= 8) {\n      digest[n++] = ((this.hash_[i] >> j) & 255);\n    }\n  }\n  return digest;\n};\n\n\n/**\n * Constants used in SHA-2.\n * @const\n * @private {!Array<number>}\n */\ngoog.crypt.Sha2.K_ = [\n  0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1,\n  0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,\n  0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786,\n  0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,\n  0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147,\n  0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,\n  0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b,\n  0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,\n  0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a,\n  0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,\n  0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2\n];\n\n\n/**\n * Sha2.K as an Int32Array if this JS supports typed arrays; otherwise,\n * the same array as Sha2.K.\n *\n * The compiler cannot remove an Int32Array, even if it is not needed\n * (There are certain cases where creating an Int32Array is not\n * side-effect free).  Instead, the first time we construct a Sha2\n * instance, we convert or assign Sha2.K as appropriate.\n * @private {undefined|!Array<number>|!Int32Array}\n */\ngoog.crypt.Sha2.Kx_;\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the fireauth.storage.OAuthHandlerManager class which\n * provides utilities to the OAuth handler widget to set Auth events after an\n * IDP sign in attempt and to store state during the OAuth handshake with IDP.\n */\n\ngoog.provide('fireauth.storage.OAuthHandlerManager');\n\ngoog.require('fireauth.AuthEvent');\ngoog.require('fireauth.OAuthHelperState');\ngoog.require('fireauth.authStorage');\ngoog.require('fireauth.storage.AuthEventManager.Keys');\n\n\n/**\n * Defines the OAuth handler storage manager. It provides methods to\n * store, load and delete OAuth handler widget state, properties and setting\n * Auth events.\n * @param {?fireauth.authStorage.Manager=} opt_manager The underlying storage\n *     manager to use. If none is provided, the default global instance is used.\n * @constructor @struct @final\n */\nfireauth.storage.OAuthHandlerManager = function(opt_manager) {\n  /**\n   * @const @private{!fireauth.authStorage.Manager} The underlying storage\n   *     manager.\n   */\n  this.manager_ = opt_manager || fireauth.authStorage.Manager.getInstance();\n};\n\n\n/**\n * Valid keys for OAuth handler manager data.\n * @private @enum {!fireauth.authStorage.Key}\n */\nfireauth.storage.OAuthHandlerManager.Keys_ = {\n  OAUTH_HELPER_STATE: {\n    name: 'oauthHelperState',\n    persistent: fireauth.authStorage.Persistence.SESSION\n  },\n  SESSION_ID: {\n    name: 'sessionId',\n    persistent: fireauth.authStorage.Persistence.SESSION\n  }\n};\n\n\n/**\n * @param {string} appId The Auth state's application ID.\n * @return {!goog.Promise<?string|undefined>} A promise that resolves on success\n *     with the stored session ID.\n */\nfireauth.storage.OAuthHandlerManager.prototype.getSessionId = function(appId) {\n  return this.manager_.get(\n      fireauth.storage.OAuthHandlerManager.Keys_.SESSION_ID, appId);\n};\n\n\n/**\n * Removes the session ID string if it exists.\n * @param {string} appId The Auth state's application ID.\n * @return {!goog.Promise<void>} A promise that resolves on success.\n */\nfireauth.storage.OAuthHandlerManager.prototype.removeSessionId =\n    function(appId) {\n  return this.manager_.remove(\n      fireauth.storage.OAuthHandlerManager.Keys_.SESSION_ID, appId);\n};\n\n\n/**\n * Stores the session ID string.\n * @param {string} appId The Auth state's application ID.\n * @param {string} sessionId The session ID string to store.\n * @return {!goog.Promise<void>} A promise that resolves on success.\n */\nfireauth.storage.OAuthHandlerManager.prototype.setSessionId =\n    function(appId, sessionId) {\n  return this.manager_.set(\n      fireauth.storage.OAuthHandlerManager.Keys_.SESSION_ID, sessionId, appId);\n};\n\n\n/**\n * @return {!goog.Promise<?fireauth.OAuthHelperState>} A promise that resolves\n *     on success with the stored OAuth helper state.\n */\nfireauth.storage.OAuthHandlerManager.prototype.getOAuthHelperState =\n    function() {\n  return this.manager_.get(\n      fireauth.storage.OAuthHandlerManager.Keys_.OAUTH_HELPER_STATE)\n      .then(function(response) {\n        return fireauth.OAuthHelperState.fromPlainObject(response);\n      });\n};\n\n\n/**\n * Removes the current OAuth helper state if it exists.\n * @return {!goog.Promise<void>} A promise that resolves on success.\n */\nfireauth.storage.OAuthHandlerManager.prototype.removeOAuthHelperState =\n    function() {\n  return this.manager_.remove(\n      fireauth.storage.OAuthHandlerManager.Keys_.OAUTH_HELPER_STATE);\n};\n\n\n/**\n * Stores the current OAuth helper state.\n * @param {!fireauth.OAuthHelperState} state The OAuth helper state.\n * @return {!goog.Promise<void>} A promise that resolves on success.\n */\nfireauth.storage.OAuthHandlerManager.prototype.setOAuthHelperState =\n    function(state) {\n  return this.manager_.set(\n      fireauth.storage.OAuthHandlerManager.Keys_.OAUTH_HELPER_STATE,\n      state.toPlainObject());\n};\n\n\n/**\n * Stores the Auth event for specified identifier.\n * @param {string} appId The Auth state's application ID.\n * @param {!fireauth.AuthEvent} authEvent The Auth event.\n * @return {!goog.Promise<void>} A promise that resolves on success.\n */\nfireauth.storage.OAuthHandlerManager.prototype.setAuthEvent =\n    function(appId, authEvent) {\n  return this.manager_.set(\n      fireauth.storage.AuthEventManager.Keys.AUTH_EVENT,\n      authEvent.toPlainObject(),\n      appId);\n};\n\n\n/**\n * Stores the redirect Auth event for specified identifier.\n * @param {string} appId The Auth state's application ID.\n * @param {!fireauth.AuthEvent} authEvent The redirect Auth event.\n * @return {!goog.Promise<void>} A promise that resolves on success.\n */\nfireauth.storage.OAuthHandlerManager.prototype.setRedirectEvent =\n    function(appId, authEvent) {\n  return this.manager_.set(\n      fireauth.storage.AuthEventManager.Keys.REDIRECT_EVENT,\n      authEvent.toPlainObject(),\n      appId);\n};\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview Abstract cryptographic hash interface.\n *\n * See goog.crypt.Sha1 and goog.crypt.Md5 for sample implementations.\n */\n\ngoog.provide('goog.crypt.Hash');\n\n\n\n/**\n * Create a cryptographic hash instance.\n *\n * @constructor\n * @struct\n */\ngoog.crypt.Hash = function() {\n  /**\n   * The block size for the hasher.\n   * @type {number}\n   */\n  this.blockSize = -1;\n};\n\n\n/**\n * Resets the internal accumulator.\n */\ngoog.crypt.Hash.prototype.reset = goog.abstractMethod;\n\n\n/**\n * Adds a byte array (array with values in [0-255] range) or a string (must\n * only contain 8-bit, i.e., Latin1 characters) to the internal accumulator.\n *\n * Many hash functions operate on blocks of data and implement optimizations\n * when a full chunk of data is readily available. Hence it is often preferable\n * to provide large chunks of data (a kilobyte or more) than to repeatedly\n * call the update method with few tens of bytes. If this is not possible, or\n * not feasible, it might be good to provide data in multiplies of hash block\n * size (often 64 bytes). Please see the implementation and performance tests\n * of your favourite hash.\n *\n * @param {Array<number>|Uint8Array|string} bytes Data used for the update.\n * @param {number=} opt_length Number of bytes to use.\n */\ngoog.crypt.Hash.prototype.update = goog.abstractMethod;\n\n\n/**\n * @return {!Array<number>} The finalized hash computed\n *     from the internal accumulator.\n */\ngoog.crypt.Hash.prototype.digest = goog.abstractMethod;\n","/**\n * @license\n * Copyright The Closure Library Authors.\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/**\n * @fileoverview SHA-256 cryptographic hash.\n *\n * Usage:\n *   var sha256 = new goog.crypt.Sha256();\n *   sha256.update(bytes);\n *   var hash = sha256.digest();\n */\n\ngoog.provide('goog.crypt.Sha256');\n\ngoog.require('goog.crypt.Sha2');\n\n\n\n/**\n * SHA-256 cryptographic hash constructor.\n *\n * @constructor\n * @extends {goog.crypt.Sha2}\n * @final\n * @struct\n */\ngoog.crypt.Sha256 = function() {\n  goog.crypt.Sha256.base(\n      this, 'constructor', 8, goog.crypt.Sha256.INIT_HASH_BLOCK_);\n};\ngoog.inherits(goog.crypt.Sha256, goog.crypt.Sha2);\n\n\n/** @private {!Array<number>} */\ngoog.crypt.Sha256.INIT_HASH_BLOCK_ = [\n  0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c,\n  0x1f83d9ab, 0x5be0cd19\n];\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines Cordova utility and helper functions.\n * The following plugins must be installed:\n * cordova plugin add cordova-plugin-buildinfo\n * cordova plugin add cordova-universal-links-plugin-fix\n * cordova plugin add cordova-plugin-browsertab\n * cordova plugin add cordova-plugin-inappbrowser\n * iOS custom scheme support:\n * cordova plugin add cordova-plugin-customurlscheme --variable \\\n * URL_SCHEME=com.firebase.example\n * Console logging in iOS:\n * cordova plugin add cordova-plugin-console\n */\n\ngoog.provide('fireauth.CordovaHandler');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.AuthEvent');\ngoog.require('fireauth.AuthProvider');\ngoog.require('fireauth.DynamicLink');\ngoog.require('fireauth.OAuthSignInHandler');\ngoog.require('fireauth.UniversalLinkSubscriber');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.constants');\ngoog.require('fireauth.iframeclient.IfcHandler');\ngoog.require('fireauth.storage.AuthEventManager');\ngoog.require('fireauth.storage.OAuthHandlerManager');\ngoog.require('fireauth.util');\ngoog.require('goog.Promise');\ngoog.require('goog.Timer');\ngoog.require('goog.Uri');\ngoog.require('goog.array');\ngoog.require('goog.crypt');\ngoog.require('goog.crypt.Sha256');\n\n\n/**\n * Cordova environment utility and helper functions.\n * @param {string} authDomain The application authDomain.\n * @param {string} apiKey The API key.\n * @param {string} appName The App name.\n * @param {?string=} clientVersion The optional client version string.\n * @param {number=} initialTimeout Initial Auth event timeout.\n * @param {number=} redirectTimeout Redirect result timeout.\n * @param {?string=} endpointId The endpoint ID (staging, test Gaia, etc).\n * @param {?fireauth.constants.EmulatorSettings=} emulatorConfig The emulator\n *     configuration\n * @constructor\n * @implements {fireauth.OAuthSignInHandler}\n */\nfireauth.CordovaHandler = function(authDomain, apiKey, appName,\n    clientVersion, initialTimeout, redirectTimeout, endpointId, emulatorConfig) {\n  /** @private {string} The application authDomain. */\n  this.authDomain_ = authDomain;\n  /** @private {string} The application API key. */\n  this.apiKey_ = apiKey;\n  /** @private {string} The application name. */\n  this.appName_ = appName;\n  /** @private {?string} The client version */\n  this.clientVersion_ = clientVersion || null;\n  /** @private {?string} The Auth endpoint ID. */\n  this.endpointId_ = endpointId || null;\n  /**\n   * @private @const {?fireauth.constants.EmulatorSettings|undefined}\n   * The emulator configuration\n   */\n  this.emulatorConfig_ = emulatorConfig;\n  /** @private {string} The storage key. */\n  this.storageKey_ = fireauth.util.createStorageKey(apiKey, appName);\n  /**\n   * @private {!fireauth.storage.OAuthHandlerManager} The OAuth handler\n   *     storage manager reference, used to save a partial Auth event when\n   *     redirect operation is triggered.\n   */\n  this.savePartialEventManager_ = new fireauth.storage.OAuthHandlerManager();\n  /**\n   * @private {!fireauth.storage.AuthEventManager} The Auth event storage\n   *     manager reference. This is used to get back the saved partial Auth\n   *     event and then delete on successful handling.\n   */\n  this.getAndDeletePartialEventManager_ =\n      new fireauth.storage.AuthEventManager(this.storageKey_);\n  /**\n   * @private {?goog.Promise<!fireauth.AuthEvent>} A promise that resolves with\n   *     the OAuth redirect URL response.\n   */\n  this.initialAuthEvent_ = null;\n  /**\n   * @private {!Array<!function(?fireauth.AuthEvent)>} The Auth event\n   *     listeners.\n   */\n  this.authEventListeners_ = [];\n  /** @private {number} The initial Auth event timeout. */\n  this.initialTimeout_ = initialTimeout ||\n      fireauth.CordovaHandler.INITIAL_TIMEOUT_MS_;\n  /** @private {number} The return to app after redirect timeout. */\n  this.redirectTimeout_ = redirectTimeout ||\n      fireauth.CordovaHandler.REDIRECT_TIMEOUT_MS_;\n  /**\n   * @private {?goog.Promise} The last pending redirect promise. This is null if\n   *     already completed.\n   */\n  this.pendingRedirect_ = null;\n  /**\n   * @private {?Object} The inAppBrowser reference window if available. This is\n   *     relevant to iOS 7 and 8 embedded webviews.\n   */\n  this.inAppBrowserRef_ = null;\n};\n\n\n/**\n * The total number of chars used to generate the session ID string.\n * @const {number}\n * @private\n */\nfireauth.CordovaHandler.SESSION_ID_TOTAL_CHARS_ = 20;\n\n\n/**\n * The default initial Auth event timeout in ms.\n * @const {number}\n * @private\n */\nfireauth.CordovaHandler.INITIAL_TIMEOUT_MS_ = 500;\n\n\n/**\n * The default timeout in milliseconds for a pending redirect operation after\n * returning to the app.\n * @const {number}\n * @private\n */\nfireauth.CordovaHandler.REDIRECT_TIMEOUT_MS_ = 2000;\n\n\n/**\n * Constructs a Cordova configuration error message.\n * @param {?string=} opt_message The optional error message to be used. This\n *     will override the existing default one.\n * @return {!fireauth.AuthError} The Cordova invalid configuration error with\n *     the custom message provided. If no message is provided, the default\n *     message is used.\n * @private\n */\nfireauth.CordovaHandler.getError_ = function(opt_message) {\n  return new fireauth.AuthError(\n      fireauth.authenum.Error.INVALID_CORDOVA_CONFIGURATION,\n      opt_message);\n};\n\n\n/**\n * Initializes the Cordova environment and waits for it to be ready.\n * @return {!goog.Promise} A promise that resolves if the current environment is\n *     a Cordova environment.\n * @override\n */\nfireauth.CordovaHandler.prototype.initializeAndWait = function() {\n  if (this.isReady_) {\n    return this.isReady_;\n  }\n  this.isReady_ = fireauth.util.checkIfCordova().then(function() {\n    // Check all dependencies installed.\n    // Note that cordova-universal-links-plugin has been abandoned.\n    // A fork with latest fixes is available at:\n    // https://www.npmjs.com/package/cordova-universal-links-plugin-fix\n    var subscribe = fireauth.util.getObjectRef(\n        'universalLinks.subscribe', goog.global);\n    if (typeof subscribe !== 'function') {\n      throw fireauth.CordovaHandler.getError_(\n          'cordova-universal-links-plugin-fix is not installed');\n    }\n    // https://www.npmjs.com/package/cordova-plugin-buildinfo\n    var appIdentifier =\n        fireauth.util.getObjectRef('BuildInfo.packageName', goog.global);\n    if (typeof appIdentifier === 'undefined') {\n      throw fireauth.CordovaHandler.getError_(\n          'cordova-plugin-buildinfo is not installed');\n    }\n    // https://github.com/google/cordova-plugin-browsertab\n    var openUrl = fireauth.util.getObjectRef(\n        'cordova.plugins.browsertab.openUrl', goog.global);\n    if (typeof openUrl !== 'function') {\n      throw fireauth.CordovaHandler.getError_(\n          'cordova-plugin-browsertab is not installed');\n    }\n    // https://cordova.apache.org/docs/en/latest/reference/cordova-plugin-inappbrowser/\n    var openInAppBrowser = fireauth.util.getObjectRef(\n        'cordova.InAppBrowser.open', goog.global);\n    if (typeof openInAppBrowser !== 'function') {\n      throw fireauth.CordovaHandler.getError_(\n          'cordova-plugin-inappbrowser is not installed');\n    }\n  }, function(error) {\n    // If not supported.\n    throw new fireauth.AuthError(fireauth.authenum.Error.CORDOVA_NOT_READY);\n  });\n  return this.isReady_;\n};\n\n\n/**\n * Generates a session ID. Used to prevent session fixation attacks.\n * @param {number} numOfChars The number of characters to generate.\n * @return {string} The generated session ID.\n * @private\n */\nfireauth.CordovaHandler.prototype.generateSessionId_ = function(numOfChars) {\n  var chars = [];\n  var allowedChars =\n      '1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';\n  while (numOfChars > 0) {\n    var index = Math.floor(Math.random() * allowedChars.length);\n    chars.push(allowedChars.charAt(index));\n    numOfChars--;\n  }\n  return chars.join('');\n};\n\n\n/**\n * Computes the sha256 hash of a session ID.\n * @param {string} str The string to hash.\n * @return {string} The hashed string.\n * @private\n */\nfireauth.CordovaHandler.prototype.computeSecureHash_ = function(str) {\n  // sha256 the sessionId. This will be passed to the OAuth backend.\n  // When exchanging the Auth code with a firebase ID token, the raw session ID\n  // needs to be provided.\n  var sha256 = new goog.crypt.Sha256();\n  sha256.update(str);\n  return goog.crypt.byteArrayToHex(sha256.digest());\n};\n\n\n/**\n * Waits for popup window to close and time out if the result is unhandled.\n * This is not supported in Cordova.\n * @param {!Window} popupWin The popup window.\n * @param {!function(!fireauth.AuthError)} onError The on error callback.\n * @return {!goog.Promise}\n * @override\n */\nfireauth.CordovaHandler.prototype.startPopupTimeout =\n    function(popupWin, onError, timeoutDuration) {\n  // Not supported operation, check processPopup for details.\n  onError(new fireauth.AuthError(\n      fireauth.authenum.Error.OPERATION_NOT_SUPPORTED));\n  return goog.Promise.resolve();\n};\n\n\n/**\n * Processes the popup request. This is not supported in Cordova.\n * @param {?Window} popupWin The popup window reference.\n * @param {!fireauth.AuthEvent.Type} mode The Auth event type.\n * @param {!fireauth.AuthProvider} provider The Auth provider to sign in with.\n * @param {function()} onInitialize The function to call on initialization.\n * @param {function(*)} onError The function to call on error.\n * @param {string=} opt_eventId The optional event ID.\n * @param {boolean=} opt_alreadyRedirected Whether popup is already redirected\n *     to final destination.\n * @param {?string=} opt_tenantId The optional tenant ID.\n * @return {!goog.Promise} The popup window promise.\n * @override\n */\nfireauth.CordovaHandler.prototype.processPopup = function(\n    popupWin,\n    mode,\n    provider,\n    onInitialize,\n    onError,\n    opt_eventId,\n    opt_alreadyRedirected,\n    opt_tenantId) {\n  // Popups not supported in Cordova as the activity could be destroyed in\n  // some cases. Redirect works better as getRedirectResult can be used as a\n  // fallback to get the result when the activity is detroyed.\n  return goog.Promise.reject(new fireauth.AuthError(\n      fireauth.authenum.Error.OPERATION_NOT_SUPPORTED));\n};\n\n\n/**\n * @return {boolean} Whether the handler will unload the current page on\n *     redirect operations.\n * @override\n */\nfireauth.CordovaHandler.prototype.unloadsOnRedirect = function() {\n  // Does not necessarily unload the page on redirect.\n  return false;\n};\n\n\n/**\n * @return {boolean} Whether the handler should be initialized early.\n * @override\n */\nfireauth.CordovaHandler.prototype.shouldBeInitializedEarly = function() {\n  // Initialize early to detect incoming link. This is not an expensive\n  // operation, unlike embedding an iframe.\n  return true;\n};\n\n\n/**\n * @return {boolean} Whether the sign-in handler in the current environment\n *     has volatile session storage.\n * @override\n */\nfireauth.CordovaHandler.prototype.hasVolatileStorage = function() {\n  // An activity can be destroyed and thereby sessionStorage wiped out.\n  return true;\n};\n\n\n/**\n * Processes the OAuth redirect request. Will resolve when the OAuth response\n * is detected in the incoming link and the corresponding Auth event is\n * triggered.\n * @param {!fireauth.AuthEvent.Type} mode The Auth event type.\n * @param {!fireauth.AuthProvider} provider The Auth provider to sign in with.\n * @param {?string=} opt_eventId The optional event ID.\n * @param {?string=} opt_tenantId The optional tenant ID.\n * @return {!goog.Promise}\n * @override\n */\nfireauth.CordovaHandler.prototype.processRedirect = function(\n    mode,\n    provider,\n    opt_eventId,\n    opt_tenantId) {\n  // If there is already a pending redirect, throw an error.\n  if (this.pendingRedirect_) {\n    return goog.Promise.reject(new fireauth.AuthError(\n        fireauth.authenum.Error.REDIRECT_OPERATION_PENDING));\n  }\n  var self = this;\n  var doc = goog.global.document;\n  // On close timer promise.\n  var onClose = null;\n  // Auth event detection callback;\n  var authEventCallback = null;\n  // On resume (return from the redirect operation).\n  var onResume = null;\n  // On visibility change used to detect return to app in certain versions,\n  // currently iOS.\n  var onVisibilityChange = null;\n  // When the processRedirect promise completes, clean up any remaining\n  // temporary listeners and timers.\n  var cleanup = function() {\n    // Remove current resume listener.\n    if (onResume) {\n      doc.removeEventListener('resume', onResume, false);\n    }\n    // Remove visibility change listener.\n    if (onVisibilityChange) {\n      doc.removeEventListener('visibilitychange', onVisibilityChange, false);\n    }\n    // Cancel onClose promise if not already cancelled.\n    if (onClose) {\n      onClose.cancel();\n    }\n    // Remove Auth event callback.\n    if (authEventCallback) {\n      self.removeAuthEventListener(authEventCallback);\n    }\n    // Clear any pending redirect now that it is completed.\n    self.pendingRedirect_ = null;\n  };\n  // Save the pending redirect promise and clear it on completion.\n  this.pendingRedirect_ = goog.Promise.resolve().then(function() {\n    // Validate provider.\n    // Fail fast in this case.\n    fireauth.AuthProvider.checkIfOAuthSupported(provider);\n    return self.getInitialAuthEvent_();\n  }).then(function() {\n    return self.processRedirectInternal_(\n        mode, provider, opt_eventId, opt_tenantId);\n  }).then(function() {\n    // Wait for result (universal link) before resolving this operation.\n    // This ensures that if the activity is not destroyed, we can still\n    // return the result of this operation.\n    return new goog.Promise(function(resolve, reject) {\n      /**\n       * @param {?fireauth.AuthEvent} event The Auth event detected.\n       * @return {boolean}\n       */\n      authEventCallback = function(event) {\n        // Auth event detected, resolve promise.\n        // Close SFSVC if still open.\n        var closeBrowsertab = fireauth.util.getObjectRef(\n            'cordova.plugins.browsertab.close', goog.global);\n        resolve();\n        // Close the SFSVC if it is still open (iOS 9+).\n        if (typeof closeBrowsertab === 'function') {\n          closeBrowsertab();\n        }\n        // Close inappbrowser emebedded webview in iOS7 and 8 case if still\n        // open.\n        if (self.inAppBrowserRef_ &&\n            typeof self.inAppBrowserRef_['close'] === 'function') {\n          self.inAppBrowserRef_['close']();\n          // Reset reference.\n          self.inAppBrowserRef_ = null;\n        }\n        return false;\n      };\n      // Wait and listen for the operation to complete (Auth event would\n      // trigger).\n      self.addAuthEventListener(authEventCallback);\n      // On resume (return from the redirect operation).\n      onResume = function() {\n        // Already resumed. Do not run again.\n        if (onClose) {\n          return;\n        }\n        // Wait for some time before throwing the error that the flow was\n        // cancelled by the user.\n        onClose = goog.Timer.promise(self.redirectTimeout_).then(function() {\n          // Throw the redirect cancelled by user error.\n          reject(new fireauth.AuthError(\n              fireauth.authenum.Error.REDIRECT_CANCELLED_BY_USER));\n        });\n      };\n      onVisibilityChange = function() {\n        // If app is visible, run onResume. Otherwise, ignore.\n        if (fireauth.util.isAppVisible()) {\n          onResume();\n        }\n      };\n      // Listen to resume event (will trigger when the user returns to the app).\n      doc.addEventListener('resume', onResume, false);\n      // Listen to visibility change. This is used for iOS Cordova Safari 7+.\n      // Does not work in Android stock browser versions older than 4.4.\n      // We rely on resume event in Android as it works reliably in all\n      // versions.\n      if (!fireauth.util.isAndroid()) {\n        doc.addEventListener('visibilitychange', onVisibilityChange, false);\n      }\n    }).thenCatch(function(error) {\n      // Remove any pending partial event.\n      return self.getPartialStoredEvent_().then(function() {\n        throw error;\n      });\n    });\n  }).thenAlways(cleanup);\n  // Return the pending redirect promise.\n  return this.pendingRedirect_;\n};\n\n/**\n * Processes the OAuth redirect request.\n * @param {!fireauth.AuthEvent.Type} mode The Auth event type.\n * @param {!fireauth.AuthProvider} provider The Auth provider to sign in with.\n * @param {?string=} opt_eventId The optional event ID.\n * @param {?string=} opt_tenantId The optional tenant ID.\n * @return {!goog.Promise}\n * @private\n */\nfireauth.CordovaHandler.prototype.processRedirectInternal_ = function(\n    mode,\n    provider,\n    opt_eventId,\n    opt_tenantId) {\n  var self = this;\n  // https://github.com/google/cordova-plugin-browsertab\n  // Opens chrome custom tab in Android if chrome is installed,\n  // SFSafariViewController in iOS if supported.\n  // If the above are not supported, opens the system browser.\n  // Opening a system browser could result in an app being rejected in the App\n  // Store. The only solution here is to use an insecure embedded UIWebView.\n  // This applies to older iOS versions 8 and under.\n  // Generate a random session ID.\n  var sessionId = this.generateSessionId_(\n      fireauth.CordovaHandler.SESSION_ID_TOTAL_CHARS_);\n  // Create the partial Auth event.\n  var event = new fireauth.AuthEvent(\n      mode,\n      opt_eventId,\n      null,\n      sessionId,\n      new fireauth.AuthError(fireauth.authenum.Error.NO_AUTH_EVENT),\n      null,\n      opt_tenantId);\n  // Use buildinfo package to get app metadata.\n  // https://www.npmjs.com/package/cordova-plugin-buildinfo\n  // Get app identifier.\n  var appIdentifier =\n      fireauth.util.getObjectRef('BuildInfo.packageName', goog.global);\n  // initializeAndWait will ensure this does not happen.\n  if (typeof appIdentifier !== 'string') {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.INVALID_CORDOVA_CONFIGURATION);\n  }\n  // Get app display name.\n  var appDisplayName =\n      fireauth.util.getObjectRef('BuildInfo.displayName', goog.global);\n  // Construct additional params to pass to OAuth handler.\n  var additionalParams  = {};\n  // Append app identifier.\n  if (fireauth.util.isIOS()) {\n    // iOS app.\n    additionalParams['ibi'] = appIdentifier;\n  } else if (fireauth.util.isAndroid()) {\n    // Android app.\n    additionalParams['apn'] = appIdentifier;\n  } else {\n    // This should not happen as Cordova handler should not even be used in this\n    // case.\n    return goog.Promise.reject(new fireauth.AuthError(\n        fireauth.authenum.Error.OPERATION_NOT_SUPPORTED));\n  }\n  // Pass app display name.\n  if (appDisplayName) {\n    additionalParams['appDisplayName'] = appDisplayName;\n  }\n  // Hash the session ID and pass it to additional params.\n  var hashedSessionId = this.computeSecureHash_(sessionId);\n  // Append session ID.\n  additionalParams['sessionId'] = hashedSessionId;\n  // Construct OAuth handler URL.\n  var oauthHelperWidgetUrl =\n      fireauth.iframeclient.IfcHandler.getOAuthHelperWidgetUrl(\n          this.authDomain_,\n          this.apiKey_,\n          this.appName_,\n          mode,\n          provider,\n          null,\n          opt_eventId,\n          this.clientVersion_,\n          additionalParams,\n          this.endpointId_,\n          opt_tenantId,\n          this.emulatorConfig_);\n  // Make sure handler initialized and ready.\n  // This should also ensure all plugins are installed.\n  return this.initializeAndWait().then(function() {\n    // Save partial Auth event.\n    return self.savePartialEventManager_.setAuthEvent(self.storageKey_, event);\n  }).then(function() {\n    // initializeAndWait will ensure this plugin is installed.\n    var isAvailable = /** @type {!function(!function(*))} */ (\n        fireauth.util.getObjectRef(\n            'cordova.plugins.browsertab.isAvailable', goog.global));\n    if (typeof isAvailable !== 'function') {\n      throw new fireauth.AuthError(\n          fireauth.authenum.Error.INVALID_CORDOVA_CONFIGURATION);\n    }\n    var openUrl = null;\n    // Check if browsertab is supported.\n    isAvailable(function(result) {\n      if (result) {\n        // browsertab supported.\n        openUrl = /** @type {!function(string, ...*)} */ (\n            fireauth.util.getObjectRef(\n                'cordova.plugins.browsertab.openUrl', goog.global));\n        if (typeof openUrl !== 'function') {\n          throw new fireauth.AuthError(\n              fireauth.authenum.Error.INVALID_CORDOVA_CONFIGURATION);\n        }\n        // Open OAuth handler.\n        openUrl(oauthHelperWidgetUrl);\n      } else {\n        // browsertab not supported, switch to inappbrowser.\n        openUrl = /** @type {!function(string, string, string=)} */ (\n            fireauth.util.getObjectRef(\n                'cordova.InAppBrowser.open', goog.global));\n        if (typeof openUrl !== 'function') {\n          throw new fireauth.AuthError(\n              fireauth.authenum.Error.INVALID_CORDOVA_CONFIGURATION);\n        }\n        // Open in embedded webview for iOS 7 and 8 as Apple rejects apps that\n        // switch context.\n        // _blank opens an embedded webview.\n        // _system opens the system browser.\n        // _system (opens a system browser) is used as a fallback when\n        // browsertab plugin is unable to open a chromecustomtab or SFSVC.\n        // This has to exclude all iOS older versions where switching to a\n        // browser is frowned upon by Apple and embedding a UIWebView is the\n        // only option but is insecure and deprecated by Google for OAuth\n        // sign-in. This will be applicable in old versions of Android.\n        self.inAppBrowserRef_ = openUrl(\n            oauthHelperWidgetUrl,\n            fireauth.util.isIOS7Or8() ? '_blank' : '_system',\n            'location=yes');\n      }\n    });\n  });\n};\n\n\n/**\n * Dispatches the detected Auth event to all subscribed listeners.\n * @param {!fireauth.AuthEvent} event A detected Auth event.\n * @private\n */\nfireauth.CordovaHandler.prototype.dispatchEvent_ = function(event) {\n  for (var i = 0; i < this.authEventListeners_.length; i++) {\n    try {\n      this.authEventListeners_[i](event);\n    } catch (e) {\n      // If any handler fails, ignore and run next handler.\n    }\n  }\n};\n\n\n/**\n * Resolves the first redirect Auth event and caches it.\n * @return {!goog.Promise<!fireauth.AuthEvent>} A promise that resolves with the\n *     initial Auth event response from a redirect operation. Initializes the\n *     internal Auth event listener which will dispatch Auth events to all\n *     subscribed listeners.\n * @private\n */\nfireauth.CordovaHandler.prototype.getInitialAuthEvent_ = function() {\n  var self = this;\n  if (!this.initialAuthEvent_) {\n    // Cache this result so on next call, it is not triggered again.\n    this.initialAuthEvent_ = this.initializeAndWait().then(function() {\n      return new goog.Promise(function(resolve, reject) {\n        /**\n         * @param {?fireauth.AuthEvent} event The Auth event detected.\n         * @return {boolean}\n         */\n        var authEventCallback = function(event) {\n          resolve(event);\n          // Remove on completion.\n          self.removeAuthEventListener(authEventCallback);\n          return false;\n        };\n        // Listen to Auth events. If resolved, resolve promise.\n        self.addAuthEventListener(authEventCallback);\n        // This should succeed as initializeAndWait should guarantee plugins are\n        // ready.\n        self.setAuthEventListener_();\n      });\n    });\n  }\n  return this.initialAuthEvent_;\n};\n\n\n/**\n * Gets and deletes the current stored partial event from storage.\n * @return {!goog.Promise<?fireauth.AuthEvent>} A promise that resolves with the\n *     stored Auth event.\n * @private\n */\nfireauth.CordovaHandler.prototype.getPartialStoredEvent_ = function() {\n  var event = null;\n  var self = this;\n  // Get any saved partial Auth event.\n  return this.getAndDeletePartialEventManager_.getAuthEvent()\n    .then(function(authEvent) {\n      // Save partial event locally.\n      event = authEvent;\n      // Delete partial event.\n      return self.getAndDeletePartialEventManager_.removeAuthEvent();\n    }).then(function() {\n      // Return the locally saved partial event.\n      return event;\n    });\n};\n\n\n/**\n * Extracts the Auth event pertaining to the incoming URL.\n * @param {!fireauth.AuthEvent} partialEvent The partial Auth event.\n * @param {string} url The incoming universal link.\n * @return {?fireauth.AuthEvent} The resolved Auth event corresponding to the\n *     callback URL. This is null if no event is found.\n * @private\n */\nfireauth.CordovaHandler.prototype.extractAuthEventFromUrl_ =\n    function(partialEvent, url) {\n  // Default no redirect event result.\n  var authEvent = null;\n  // Parse the deep link within the dynamic link URL.\n  var callbackUrl = fireauth.DynamicLink.parseDeepLink(url);\n  // Confirm it is actually a callback URL.\n  // Currently the universal link will be of this format:\n  // https://<AUTH_DOMAIN>/__/auth/callback<OAUTH_RESPONSE>\n  // This is a fake URL but is not intended to take the user anywhere\n  // and just redirect to the app.\n  if (callbackUrl.indexOf('/__/auth/callback') != -1) {\n    // Check if there is an error in the URL.\n    // This mechanism is also used to pass errors back to the app:\n    // https://<AUTH_DOMAIN>/__/auth/callback?firebaseError=<STRINGIFIED_ERROR>\n    var uri = goog.Uri.parse(callbackUrl);\n    // Get the error object corresponding to the stringified error if found.\n    var errorObject = fireauth.util.parseJSON(\n        uri.getParameterValue('firebaseError') || null);\n    var error = typeof errorObject === 'object' ?\n        fireauth.AuthError.fromPlainObject(\n            /** @type {?Object} */ (errorObject)) :\n        null;\n    if (error) {\n      // Construct the full failed Auth event.\n      authEvent = new fireauth.AuthEvent(\n          partialEvent.getType(),\n          partialEvent.getEventId(),\n          null,\n          null,\n          error,\n          null,\n          partialEvent.getTenantId());\n    } else {\n      // Construct the full successful Auth event.\n      authEvent = new fireauth.AuthEvent(\n          partialEvent.getType(),\n          partialEvent.getEventId(),\n          callbackUrl,\n          partialEvent.getSessionId(),\n          null,\n          null,\n          partialEvent.getTenantId());\n    }\n  }\n  return authEvent;\n};\n\n\n/**\n * Sets the internal Auth event listener. This listens to incoming universal\n * links and on detection, repackages them into an Auth event and then\n * dispatches the events in all event listeners.\n * @private\n */\nfireauth.CordovaHandler.prototype.setAuthEventListener_ = function() {\n  // https://github.com/nordnet/cordova-universal-links-plugin-fix\n  var self = this;\n  // Default no redirect event result.\n  var noEvent = new fireauth.AuthEvent(\n      fireauth.AuthEvent.Type.UNKNOWN,\n      null,\n      null,\n      null,\n      new fireauth.AuthError(fireauth.authenum.Error.NO_AUTH_EVENT));\n  var initialResolve = false;\n  // On initialization, if no incoming universal link detected, trigger\n  // no Auth event (no redirect operation previously called) after waiting\n  // for a short period of time.\n  var noEventTimer = goog.Timer.promise(this.initialTimeout_).then(function() {\n    // Delete any pending unhandled event.\n    return self.getPartialStoredEvent_().then(function(event) {\n      // On timeout trigger noEvent if not already resolved in link\n      // subscriber.\n      if (!initialResolve) {\n        self.dispatchEvent_(noEvent);\n      }\n    });\n  });\n  // No event name needed, subscribe to all incoming universal links.\n  var universalLinkCb = function(eventData) {\n    initialResolve = true;\n    // Cancel no event timer.\n    if (noEventTimer) {\n      noEventTimer.cancel();\n    }\n    // Incoming link detected.\n    // Check for any stored partial event.\n    self.getPartialStoredEvent_().then(function(event) {\n      // Initialize to an unknown event.\n      var authEvent = noEvent;\n      // Confirm OAuth response included.\n      if (event && eventData && eventData['url']) {\n        // Construct complete event. Default to unknown event if none found.\n        authEvent = self.extractAuthEventFromUrl_(event, eventData['url']) ||\n            noEvent;\n      }\n      // Dispatch Auth event.\n      self.dispatchEvent_(authEvent);\n    });\n  };\n  // iOS 7 or 8 custom URL schemes.\n  // This is also the current default behavior for iOS 9+.\n  // For this to work, cordova-plugin-customurlscheme needs to be installed.\n  // https://github.com/EddyVerbruggen/Custom-URL-scheme\n  // Do not overwrite the existing developer's URL handler.\n  var existingHandlerOpenURL = goog.global['handleOpenURL'];\n  goog.global['handleOpenURL'] = function(url) {\n    var appIdentifier =\n        fireauth.util.getObjectRef('BuildInfo.packageName', goog.global);\n    // Apply case insensitive match. While bundle IDs are case sensitive,\n    // when creating a new app, Apple verifies the Bundle ID using\n    // case-insensitive search. So it is not possible that an app in the app\n    // store try to impersonate another one by lower/upper casing characters.\n    if (url.toLowerCase().indexOf(appIdentifier.toLowerCase() + '://') == 0) {\n      universalLinkCb({\n        'url': url\n      });\n    }\n    // Call the developer's handler if it is present.\n    if (typeof existingHandlerOpenURL === 'function') {\n      try {\n        existingHandlerOpenURL(url);\n      } catch(e) {\n        // This doesn't swallow the error but also does not interrupt the flow.\n        console.error(e);\n      }\n    }\n  };\n  fireauth.UniversalLinkSubscriber.getInstance().subscribe(universalLinkCb);\n};\n\n\n/**\n * @param {!function(?fireauth.AuthEvent):boolean} listener The Auth event\n *     listener to add.\n * @override\n */\nfireauth.CordovaHandler.prototype.addAuthEventListener = function(listener) {\n  // TODO: consider creating an abstract base class that OAuth handlers\n  // extend with add, remove Auth event listeners and dispatcher methods.\n  this.authEventListeners_.push(listener);\n  // Set internal listener to Auth events. This will be ignored on subsequent\n  // calls.\n  this.getInitialAuthEvent_().thenCatch(function(error) {\n    // Suppress this error as it should be caught through other actionable\n    // public methods.\n    // This would typically happen on invalid Cordova setup, when the OAuth\n    // plugins are not installed. This should still trigger the Auth event\n    // as developers are not forced to use OAuth sign-in in their Cordova app.\n    // This is needed for onAuthStateChanged listener to trigger initially.\n    if (error.code === 'auth/invalid-cordova-configuration') {\n      var noEvent = new fireauth.AuthEvent(\n          fireauth.AuthEvent.Type.UNKNOWN,\n          null,\n          null,\n          null,\n          new fireauth.AuthError(fireauth.authenum.Error.NO_AUTH_EVENT));\n      listener(noEvent);\n    }\n  });\n};\n\n\n/**\n * @param {!function(?fireauth.AuthEvent):boolean} listener The Auth event\n *     listener to remove.\n * @override\n */\nfireauth.CordovaHandler.prototype.removeAuthEventListener = function(listener) {\n  goog.array.removeAllIf(this.authEventListeners_, function(ele) {\n    return ele == listener;\n  });\n};\n\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the fireauth.storage.PendingRedirectManager class which\n * provides utilities to store, retrieve and delete the state of whether there\n * is a pending redirect operation previously triggered.\n */\n\ngoog.provide('fireauth.storage.PendingRedirectManager');\n\ngoog.require('fireauth.authStorage');\n\n\n/**\n * Defines the pending redirect storage manager. It provides methods\n * to store, retrieve and delete the state of whether there is a pending\n * redirect operation previously triggered.\n * @param {string} appId The Auth state's application ID.\n * @param {?fireauth.authStorage.Manager=} opt_manager The underlying storage\n *     manager to use. If none is provided, the default global instance is used.\n * @constructor @struct @final\n */\nfireauth.storage.PendingRedirectManager = function(appId, opt_manager) {\n  /** @const @private{string} appId The Auth state's application ID. */\n  this.appId_ = appId;\n  /**\n   * @const @private{!fireauth.authStorage.Manager} The underlying storage\n   *     manager.\n   */\n  this.manager_ = opt_manager || fireauth.authStorage.Manager.getInstance();\n};\n\n\n/**\n * @const @private{!string} The pending redirect flag.\n */\nfireauth.storage.PendingRedirectManager.PENDING_FLAG_ = 'pending';\n\n\n/**\n * @const @private{!fireauth.authStorage.Key} The pending redirect status\n *     storage identifier key.\n */\nfireauth.storage.PendingRedirectManager.PENDING_REDIRECT_KEY_ = {\n  name: 'pendingRedirect',\n  persistent: fireauth.authStorage.Persistence.SESSION\n};\n\n\n/**\n * Stores the pending redirect operation for the provided application ID.\n * @return {!goog.Promise<void>} A promise that resolves on success.\n */\nfireauth.storage.PendingRedirectManager.prototype.setPendingStatus =\n    function() {\n  return this.manager_.set(\n      fireauth.storage.PendingRedirectManager.PENDING_REDIRECT_KEY_,\n      fireauth.storage.PendingRedirectManager.PENDING_FLAG_,\n      this.appId_);\n};\n\n\n/**\n * Removes the stored pending redirect operation for provided app ID.\n * @return {!goog.Promise<void>} A promise that resolves on success.\n */\nfireauth.storage.PendingRedirectManager.prototype.removePendingStatus =\n    function() {\n  return this.manager_.remove(\n      fireauth.storage.PendingRedirectManager.PENDING_REDIRECT_KEY_,\n      this.appId_);\n};\n\n\n/**\n * @return {!goog.Promise<boolean>} A promise that resolves with a boolean\n *     whether there is a pending redirect operaiton for the provided app ID.\n */\nfireauth.storage.PendingRedirectManager.prototype.getPendingStatus =\n    function() {\n  return this.manager_.get(\n      fireauth.storage.PendingRedirectManager.PENDING_REDIRECT_KEY_,\n      this.appId_).then(function(response) {\n        return response ==\n            fireauth.storage.PendingRedirectManager.PENDING_FLAG_;\n      });\n};\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the Auth event manager instance.\n */\n\ngoog.provide('fireauth.AuthEventHandler');\ngoog.provide('fireauth.AuthEventManager');\ngoog.provide('fireauth.AuthEventManager.Result');\ngoog.provide('fireauth.PopupAuthEventProcessor');\ngoog.provide('fireauth.RedirectAuthEventProcessor');\n\ngoog.require('fireauth.AuthCredential');\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.AuthEvent');\ngoog.require('fireauth.CordovaHandler');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.constants');\ngoog.require('fireauth.iframeclient.IfcHandler');\ngoog.require('fireauth.storage.PendingRedirectManager');\ngoog.require('fireauth.util');\ngoog.require('goog.Promise');\ngoog.require('goog.Timer');\ngoog.require('goog.array');\n\n\n/**\n * Initializes the Auth event manager which provides the mechanism to connect\n * external Auth events to their corresponding listeners.\n * @param {string} authDomain The Firebase authDomain used to determine the\n *     OAuth helper page domain.\n * @param {string} apiKey The API key for sending backend Auth requests.\n * @param {string} appName The App ID for the Auth instance that triggered this\n *     request.\n *  @param {?fireauth.constants.EmulatorSettings=} emulatorConfig The emulator\n *     configuration.\n * @constructor\n */\nfireauth.AuthEventManager = function(authDomain, apiKey, appName, emulatorConfig) {\n  /**\n   * @private {!Object<string, boolean>} The map of processed auth event IDs.\n   */\n  this.processedEvents_ = {};\n  /** @private {number} The last saved processed event time in milliseconds. */\n  this.lastProcessedEventTime_ = 0;\n  /** @private {string} The Auth domain. */\n  this.authDomain_ = authDomain;\n  /** @private {string} The browser API key. */\n  this.apiKey_ = apiKey;\n  /** @private {string} The App name. */\n  this.appName_ = appName;\n  /** @private @const {?fireauth.constants.EmulatorSettings|undefined} The emulator config. */\n  this.emulatorConfig_ = emulatorConfig;\n  /**\n   * @private {!Array<!fireauth.AuthEventHandler>} List of subscribed handlers.\n   */\n  this.subscribedHandlers_ = [];\n  /**\n   * @private {boolean} Whether the Auth event manager instance is initialized.\n   */\n  this.initialized_ = false;\n  /** @private {function(?fireauth.AuthEvent)} The Auth event handler. */\n  this.authEventHandler_ = goog.bind(this.handleAuthEvent_, this);\n  /** @private {!fireauth.RedirectAuthEventProcessor} The redirect event\n   *      processor. */\n  this.redirectAuthEventProcessor_ =\n      new fireauth.RedirectAuthEventProcessor(this);\n  /** @private {!fireauth.PopupAuthEventProcessor} The popup event processor. */\n  this.popupAuthEventProcessor_ = new fireauth.PopupAuthEventProcessor(this);\n  /**\n   * @private {!fireauth.storage.PendingRedirectManager} The pending redirect\n   *     storage manager instance.\n   */\n  this.pendingRedirectStorageManager_ =\n      new fireauth.storage.PendingRedirectManager(\n          fireauth.AuthEventManager.getKey_(this.apiKey_, this.appName_));\n\n  /**\n   * @private {!Object.<!fireauth.AuthEvent.Type, !fireauth.AuthEventProcessor>}\n   *     Map containing Firebase event processor instances keyed by event type.\n   */\n  this.typeToManager_ = {};\n  this.typeToManager_[fireauth.AuthEvent.Type.UNKNOWN] =\n      this.redirectAuthEventProcessor_;\n  this.typeToManager_[fireauth.AuthEvent.Type.SIGN_IN_VIA_REDIRECT] =\n      this.redirectAuthEventProcessor_;\n  this.typeToManager_[fireauth.AuthEvent.Type.LINK_VIA_REDIRECT] =\n      this.redirectAuthEventProcessor_;\n  this.typeToManager_[fireauth.AuthEvent.Type.REAUTH_VIA_REDIRECT] =\n      this.redirectAuthEventProcessor_;\n  this.typeToManager_[fireauth.AuthEvent.Type.SIGN_IN_VIA_POPUP] =\n      this.popupAuthEventProcessor_;\n  this.typeToManager_[fireauth.AuthEvent.Type.LINK_VIA_POPUP] =\n      this.popupAuthEventProcessor_;\n  this.typeToManager_[fireauth.AuthEvent.Type.REAUTH_VIA_POPUP] =\n      this.popupAuthEventProcessor_;\n  /**\n   * @private {!fireauth.OAuthSignInHandler} The OAuth sign in handler depending\n   *     on the current environment.\n   */\n  this.oauthSignInHandler_ =\n      fireauth.AuthEventManager.instantiateOAuthSignInHandler(\n        this.authDomain_,\n        this.apiKey_,\n        this.appName_,\n        firebase.SDK_VERSION || null,\n        fireauth.constants.clientEndpoint,\n        this.emulatorConfig_);\n};\n\n\n/**\n * @const {number} The number of milliseconds since the last processed\n *     event before the event duplication cache is cleared. This is currently\n *     10 minutes.\n */\nfireauth.AuthEventManager.EVENT_DUPLICATION_CACHE_DURATION = 10 * 60 * 1000;\n\n\n/**\n * @return {!fireauth.RedirectAuthEventProcessor} The redirect event processor.\n */\nfireauth.AuthEventManager.prototype.getRedirectAuthEventProcessor = function() {\n  return this.redirectAuthEventProcessor_;\n};\n\n\n/** @return {!fireauth.PopupAuthEventProcessor} The popup event processor. */\nfireauth.AuthEventManager.prototype.getPopupAuthEventProcessor = function() {\n  return this.popupAuthEventProcessor_;\n};\n\n\n/**\n * Instantiates an OAuth sign-in handler depending on the current environment\n * and returns it.\n * @param {string} authDomain The Firebase authDomain used to determine the\n *     OAuth helper page domain.\n * @param {string} apiKey The API key for sending backend Auth requests.\n * @param {string} appName The App ID for the Auth instance that triggered this\n *     request.\n * @param {?string} version The SDK client version.\n * @param {?string=} opt_endpointId The endpoint ID (staging, test Gaia, etc).\n *  @param {?fireauth.constants.EmulatorSettings=} emulatorConfig The emulator\n *     configuration.\n * @return {!fireauth.OAuthSignInHandler} The OAuth sign in handler depending\n *     on the current environment.\n */\nfireauth.AuthEventManager.instantiateOAuthSignInHandler =\n    function(authDomain, apiKey, appName, version, opt_endpointId, emulatorConfig) {\n  // This assumes that android/iOS file environment must be a Cordova\n  // environment which is not true. This is the best way currently available\n  // to instantiate this synchronously without waiting for checkIfCordova to\n  // resolve. If it is determined that the Cordova was falsely detected, it will\n  // be caught via actionable public popup and redirect methods.\n  return fireauth.util.isAndroidOrIosCordovaScheme() ?\n      new fireauth.CordovaHandler(\n        authDomain,\n        apiKey,\n        appName,\n        version,\n        undefined,\n        undefined,\n        opt_endpointId,\n        emulatorConfig) :\n      new fireauth.iframeclient.IfcHandler(\n        authDomain,\n        apiKey,\n        appName,\n        version,\n        opt_endpointId,\n        emulatorConfig);\n};\n\n\n/** Reset iframe. This will require reinitializing it.*/\nfireauth.AuthEventManager.prototype.reset = function() {\n  // Reset initialized status. This will force a popup request to re-initialize\n  // the iframe.\n  this.initialized_ = false;\n  // Remove any previous existing Auth event listener.\n  this.oauthSignInHandler_.removeAuthEventListener(this.authEventHandler_);\n  // Construct a new instance of OAuth sign in handler.\n\n  this.oauthSignInHandler_ =\n      fireauth.AuthEventManager.instantiateOAuthSignInHandler(\n        this.authDomain_,\n        this.apiKey_,\n        this.appName_,\n        firebase.SDK_VERSION || null,\n        null,\n        this.emulatorConfig_);\n  this.processedEvents_ = {};\n};\n\n\n/**\n * Clears the cached redirect result as long as there is no pending redirect\n * result being processed. Unrecoverable errors will not be cleared.\n */\nfireauth.AuthEventManager.prototype.clearRedirectResult = function() {\n  this.redirectAuthEventProcessor_.clearRedirectResult();\n};\n\n\n/**\n * @typedef {{\n *   user: (?fireauth.AuthUser|undefined),\n *   credential: (?fireauth.AuthCredential|undefined),\n *   operationType: (?string|undefined),\n *   additionalUserInfo: (?fireauth.AdditionalUserInfo|undefined)\n * }}\n */\nfireauth.AuthEventManager.Result;\n\n\n/**\n * Whether to enable Auth event manager subscription.\n * @const {boolean}\n */\nfireauth.AuthEventManager.ENABLED = true;\n\n\n/**\n * Initializes the ifchandler and add Auth event listener on it.\n * @return {!goog.Promise} The promise that resolves when the iframe is ready.\n */\nfireauth.AuthEventManager.prototype.initialize = function() {\n  var self = this;\n  // Initialize once.\n  if (!this.initialized_) {\n    this.initialized_ = true;\n    // Listen to Auth events on iframe.\n    this.oauthSignInHandler_.addAuthEventListener(this.authEventHandler_);\n  }\n  var previousOauthSignInHandler = this.oauthSignInHandler_;\n  // This should initialize ifchandler underneath.\n  // Return on OAuth handler ready promise.\n  // Check for error in ifcHandler used to embed the iframe.\n  return this.oauthSignInHandler_.initializeAndWait()\n      .thenCatch(function(error) {\n        // Force ifchandler to reinitialize on retrial.\n        if (self.oauthSignInHandler_ == previousOauthSignInHandler) {\n          // If a new OAuth sign in handler was already created, do not reset.\n          self.reset();\n        }\n        throw error;\n      });\n};\n\n\n/**\n * Called after it is determined that there is no pending redirect result.\n * Will populate the redirect result if it is guaranteed to be null and will\n * force an early initialization of the OAuth sign in handler if the\n * environment requires it.\n * @private\n */\nfireauth.AuthEventManager.prototype.initializeWithNoPendingRedirectResult_ =\n    function() {\n  var self = this;\n  // Check if the OAuth sign in handler should be initialized early in all\n  // cases.\n  if (this.oauthSignInHandler_.shouldBeInitializedEarly()) {\n    this.initialize().thenCatch(function(error) {\n      // Current environment was falsely detected as Cordova, trigger a fake\n      // Auth event to notify getRedirectResult that operation is not supported.\n      var notSupportedEvent = new fireauth.AuthEvent(\n          fireauth.AuthEvent.Type.UNKNOWN,\n          null,\n          null,\n          null,\n          new fireauth.AuthError(\n              fireauth.authenum.Error.OPERATION_NOT_SUPPORTED));\n      if (fireauth.AuthEventManager.isCordovaFalsePositive_(\n          /** @type {?fireauth.AuthError} */ (error))) {\n        self.handleAuthEvent_(notSupportedEvent);\n      }\n    });\n  }\n  // For environments where storage is volatile, we can't determine that\n  // there is no pending redirect response. This is true in Cordova\n  // where an activity would be destroyed in some cases and the\n  // sessionStorage is lost.\n  if (!this.oauthSignInHandler_.hasVolatileStorage()) {\n    // Since there is no redirect result, it is safe to default to empty\n    // redirect result instead of blocking on this.\n    // The downside here is that on iOS devices, calling signInWithPopup\n    // after getRedirectResult resolves and the iframe does not finish\n    // loading, the popup event propagating to the iframe would not be\n    // detected. This is because in iOS devices, storage events only trigger\n    // in iframes but are not actually saved in web storage. The iframe must\n    // be embedded and ready before the storage event propagates. Otherwise\n    // it won't be detected.\n    this.redirectAuthEventProcessor_.defaultToEmptyResponse();\n  }\n};\n\n\n/**\n * Subscribes an Auth event handler to list of handlers.\n * @param {!fireauth.AuthEventHandler} handler The instance to subscribe.\n */\nfireauth.AuthEventManager.prototype.subscribe = function(handler) {\n  if (!goog.array.contains(this.subscribedHandlers_, handler)) {\n    this.subscribedHandlers_.push(handler);\n  }\n  if (this.initialized_) {\n    return;\n  }\n  var self = this;\n  // Check pending redirect status.\n  this.pendingRedirectStorageManager_.getPendingStatus()\n      .then(function(status) {\n    // Pending redirect detected.\n    if (status) {\n      // Remove pending status and initialize.\n      self.pendingRedirectStorageManager_.removePendingStatus()\n          .then(function() {\n            self.initialize().thenCatch(function(error) {\n              // Current environment was falsely detected as Cordova, trigger a\n              // fake Auth event to notify getRedirectResult that operation is\n              // not supported.\n              var notSupportedEvent = new fireauth.AuthEvent(\n                 fireauth.AuthEvent.Type.UNKNOWN,\n                 null,\n                 null,\n                 null,\n                 new fireauth.AuthError(\n                     fireauth.authenum.Error.OPERATION_NOT_SUPPORTED));\n              if (fireauth.AuthEventManager.isCordovaFalsePositive_(\n                  /** @type {?fireauth.AuthError} */ (error))) {\n                self.handleAuthEvent_(notSupportedEvent);\n              }\n            });\n          });\n    } else {\n      // No previous redirect, default to empty response.\n      self.initializeWithNoPendingRedirectResult_();\n    }\n  }).thenCatch(function(error) {\n    // Error checking pending status, default to empty response.\n    self.initializeWithNoPendingRedirectResult_();\n  });\n};\n\n\n/**\n * @param {!fireauth.AuthEventHandler} handler The possible subscriber.\n * @return {boolean} Whether the handle is subscribed.\n */\nfireauth.AuthEventManager.prototype.isSubscribed = function(handler) {\n  return goog.array.contains(this.subscribedHandlers_, handler);\n};\n\n\n/**\n * Unsubscribes an Auth event handler to list of handlers.\n * @param {!fireauth.AuthEventHandler} handler The instance to unsubscribe.\n */\nfireauth.AuthEventManager.prototype.unsubscribe = function(handler) {\n  goog.array.removeAllIf(this.subscribedHandlers_, function(ele) {\n    return ele == handler;\n  });\n};\n\n\n/**\n * @param {?fireauth.AuthEvent} authEvent External Auth event to check.\n * @return {boolean} Whether the event was previously processed.\n * @private\n */\nfireauth.AuthEventManager.prototype.hasProcessedAuthEvent_ =\n    function(authEvent) {\n  // Prevent duplicate event tracker from growing too large.\n  if (goog.now() - this.lastProcessedEventTime_ >=\n      fireauth.AuthEventManager.EVENT_DUPLICATION_CACHE_DURATION) {\n    this.processedEvents_ = {};\n    this.lastProcessedEventTime_ = 0;\n  }\n  if (authEvent && authEvent.getUid() &&\n      this.processedEvents_.hasOwnProperty(authEvent.getUid())) {\n    // If event is already processed, ignore it.\n    return true;\n  }\n  return false;\n};\n\n\n/**\n * Saves the provided event uid to prevent processing duplication.\n * @param {?fireauth.AuthEvent} authEvent External Auth event to track in\n *     processed list of events.\n * @private\n */\nfireauth.AuthEventManager.prototype.saveProcessedAuthEvent_ =\n    function(authEvent) {\n  if (authEvent &&\n      (authEvent.getSessionId() || authEvent.getEventId())) {\n    // Save processed event ID. We keep the cache for 10 minutes to prevent it\n    // from growing too large.\n    this.processedEvents_[\n        /** @type {string} */ (authEvent.getUid())] = true;\n    // Save last processing time.\n    this.lastProcessedEventTime_ = goog.now();\n  }\n};\n\n\n/**\n * Handles external Auth event detected by the OAuth sign-in handler.\n * @param {?fireauth.AuthEvent} authEvent External Auth event detected by\n *     iframe.\n * @return {boolean} Whether the event found an appropriate owner that can\n *     handle it. This signals to the OAuth helper iframe that the event is safe\n *     to delete.\n * @private\n */\nfireauth.AuthEventManager.prototype.handleAuthEvent_ = function(authEvent) {\n  // This should not happen as fireauth.iframe.AuthRelay will not send null\n  // events.\n  if (!authEvent) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INVALID_AUTH_EVENT);\n  }\n  if (this.hasProcessedAuthEvent_(authEvent)) {\n    // If event is already processed, ignore it.\n    return false;\n  }\n  // Initialize event processed status to false. When set to false, the event is\n  // not clear to delete in the OAuth helper iframe as the owner of this event\n  // could be a user in another tab.\n  var processed = false;\n  // Lookup a potential handler for this event.\n  for (var i = 0; i < this.subscribedHandlers_.length; i++) {\n    var potentialHandler = this.subscribedHandlers_[i];\n    if (potentialHandler.canHandleAuthEvent(\n        authEvent.getType(), authEvent.getEventId())) {\n      var eventManager = this.typeToManager_[authEvent.getType()];\n      if (eventManager) {\n        eventManager.processAuthEvent(authEvent, potentialHandler);\n        // Prevent events with event IDs or session IDs from duplicate\n        // processing.\n        this.saveProcessedAuthEvent_(authEvent);\n      }\n      // Event has been processed, free to clear in OAuth helper.\n      processed = true;\n      break;\n    }\n  }\n  // If no redirect response ready yet, default to an empty response.\n  this.redirectAuthEventProcessor_.defaultToEmptyResponse();\n  // Notify iframe of processed status.\n  return processed;\n};\n\n\n/**\n * The popup promise timeout delay with units in ms between the time the iframe\n * is ready (successfully embedded on the page) and the time the popup Auth\n * event is detected in the parent container.\n * @const {!fireauth.util.Delay}\n * @private\n */\nfireauth.AuthEventManager.POPUP_TIMEOUT_MS_ =\n    new fireauth.util.Delay(2000, 10000);\n\n\n/**\n * The redirect promise timeout delay with units in ms. Unlike the popup\n * timeout, this covers the entire duration from start to getRedirectResult\n * resolution.\n * @const {!fireauth.util.Delay}\n * @private\n */\nfireauth.AuthEventManager.REDIRECT_TIMEOUT_MS_ =\n    new fireauth.util.Delay(30000, 60000);\n\n\n/**\n * Returns the redirect result. If coming back from a successful redirect sign\n * in, will resolve to the signed in user. If coming back from an unsuccessful\n * redirect sign, will reject with the proper error. If no redirect operation\n * called, resolves with null.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.AuthEventManager.prototype.getRedirectResult = function() {\n  return this.redirectAuthEventProcessor_.getRedirectResult();\n};\n\n\n/**\n * Processes the popup request. The popup instance must be provided externally\n * and on error, the requestor must close the window.\n * @param {?Window} popupWin The popup window reference.\n * @param {!fireauth.AuthEvent.Type} mode The Auth event type.\n * @param {!fireauth.AuthProvider} provider The Auth provider to sign in with.\n * @param {string=} opt_eventId The optional event ID.\n * @param {boolean=} opt_alreadyRedirected Whether popup is already redirected\n *     to final destination.\n * @param {?string=} opt_tenantId The optional tenant ID.\n * @return {!goog.Promise} The popup window promise.\n */\nfireauth.AuthEventManager.prototype.processPopup =\n    function(popupWin, mode, provider, opt_eventId, opt_alreadyRedirected,\n             opt_tenantId) {\n  var self = this;\n  return this.oauthSignInHandler_.processPopup(\n      popupWin,\n      mode,\n      provider,\n      // On initialization, add Auth event listener if not already added.\n      function() {\n        if (!self.initialized_) {\n          self.initialized_ = true;\n          // Listen to Auth events on iframe.\n          self.oauthSignInHandler_.addAuthEventListener(self.authEventHandler_);\n        }\n      },\n      // On error, reset to force re-initialization on retrial.\n      function(error) {\n        self.reset();\n      },\n      opt_eventId,\n      opt_alreadyRedirected,\n      opt_tenantId);\n};\n\n\n/**\n * @param {?fireauth.AuthError} error The error to check for Cordova false\n *     positive.\n * @return {boolean} Whether the current environment was falsely identified as\n *     Cordova.\n * @private\n */\nfireauth.AuthEventManager.isCordovaFalsePositive_ = function(error) {\n  if (error && error['code'] == 'auth/cordova-not-ready') {\n    return true;\n  }\n  return false;\n};\n\n\n/**\n * Processes the redirect request.\n * @param {!fireauth.AuthEvent.Type} mode The Auth event type.\n * @param {!fireauth.AuthProvider} provider The Auth provider to sign in with.\n * @param {string=} opt_eventId The optional event ID.\n * @param {?string=} opt_tenantId The optional tenant ID.\n * @return {!goog.Promise}\n */\nfireauth.AuthEventManager.prototype.processRedirect =\n    function(mode, provider, opt_eventId, opt_tenantId) {\n  var self = this;\n  var error;\n  // Save pending status first.\n  return this.pendingRedirectStorageManager_.setPendingStatus()\n    .then(function() {\n      // Try to redirect.\n      return self.oauthSignInHandler_.processRedirect(\n          mode, provider, opt_eventId, opt_tenantId)\n        .thenCatch(function(e) {\n          if (fireauth.AuthEventManager.isCordovaFalsePositive_(\n              /** @type {?fireauth.AuthError} */ (e))) {\n            throw new fireauth.AuthError(\n                fireauth.authenum.Error.OPERATION_NOT_SUPPORTED);\n          }\n          // On failure, remove pending status and rethrow the error.\n          error = e;\n          return self.pendingRedirectStorageManager_.removePendingStatus()\n            .then(function() {\n              throw error;\n            });\n        })\n        .then(function() {\n          // Resolve, if the OAuth handler unloads the page on redirect.\n          if (!self.oauthSignInHandler_.unloadsOnRedirect()) {\n            // Relevant to Cordova case, will not matter in web case where\n            // browser redirects.\n            // In Cordova, the activity could still be running in the background\n            // so we need to wait for getRedirectResult to resolve before\n            // resolving this current promise.\n            // Otherwise, if the activity is destroyed, getRedirectResult would\n            // be used.\n            // At this point, authEvent should have been triggered.\n            // When this promise resolves, the developer should be able to\n            // call getRedirectResult to get the result of this operation.\n            // Remove pending status as result should be resolved.\n            return self.pendingRedirectStorageManager_.removePendingStatus()\n                .then(function() {\n                  // Ensure redirect result ready before resolving.\n                  return self.getRedirectResult();\n                }).then(function(result) {\n                  // Do nothing. Developer expected to call getRedirectResult to\n                  // get result.\n                }).thenCatch(function(error) {\n                  // Do nothing. Developer expected to call getRedirectResult to\n                  // get result.\n                });\n          } else {\n            // For environments that will unload the page on redirect, keep\n            // the promise pending on success. This makes it easier to reuse\n            // the same code for Cordova environment and browser environment.\n            // The developer can always add getRedirectResult on promise\n            // resolution and expect that when it runs, the redirect operation\n            // was completed.\n            return new goog.Promise(function(resolve, reject) {\n              // Keep this pending.\n            });\n          }\n        });\n    });\n};\n\n\n/**\n * Waits for popup window to close. When closed start timeout listener for popup\n * pending promise. If in the process, it was detected that the iframe does not\n * support web storage, the popup is closed and the web storage unsupported\n * error is thrown.\n * @param {!fireauth.AuthEventHandler} owner The owner of the event.\n * @param {!fireauth.AuthEvent.Type} mode The Auth event type.\n * @param {!Window} popupWin The popup window.\n * @param {?string=} opt_eventId The event ID.\n * @return {!goog.Promise}\n */\nfireauth.AuthEventManager.prototype.startPopupTimeout =\n    function(owner, mode, popupWin, opt_eventId) {\n  return this.oauthSignInHandler_.startPopupTimeout(\n      popupWin,\n      // On popup error such as popup closed by user or web storage not\n      // supported.\n      function(error) {\n        // Notify owner of the error.\n        owner.resolvePendingPopupEvent(mode, null, error, opt_eventId);\n      },\n      fireauth.AuthEventManager.POPUP_TIMEOUT_MS_.get());\n};\n\n\n\n/**\n * @private {!Object.<string, !fireauth.AuthEventManager>} Map containing\n *     Firebase event manager instances keyed by Auth event manager ID.\n */\nfireauth.AuthEventManager.manager_ = {};\n\n\n/**\n * The separator for manager keys to concatenate app name and apiKey.\n * @const {string}\n * @private\n */\nfireauth.AuthEventManager.KEY_SEPARATOR_ = ':';\n\n\n/**\n * @param {string} apiKey The API key for sending backend Auth requests.\n * @param {string} appName The Auth instance that initiated the Auth event.\n   * @param {?fireauth.constants.EmulatorSettings=} emulatorConfig The emulator\n   *   configuration.\n   * @return {string} The key identifying the Auth event manager instance.\n   * @private\n   */\nfireauth.AuthEventManager.getKey_ = function(apiKey, appName, emulatorConfig) {\n  var key = apiKey + fireauth.AuthEventManager.KEY_SEPARATOR_ + appName;\n  if (emulatorConfig) {\n    key = key + fireauth.AuthEventManager.KEY_SEPARATOR_ + emulatorConfig.url;\n  }\n  return key;\n}\n\n\n/**\n * @param {string} authDomain The Firebase authDomain used to determine the\n *     OAuth helper page domain.\n * @param {string} apiKey The API key for sending backend Auth requests.\n * @param {string} appName The Auth instance that initiated the Auth event\n *     manager.\n * @param {?fireauth.constants.EmulatorSettings=} emulatorConfig The emulator\n *     configuration.\n * @return {!fireauth.AuthEventManager} the requested manager instance.\n */\nfireauth.AuthEventManager.getManager = function (authDomain, apiKey, appName, emulatorConfig) {\n  // Construct storage key.\n  var key = fireauth.AuthEventManager.getKey_(\n    apiKey,\n    appName,\n    emulatorConfig\n  );\n  if (!fireauth.AuthEventManager.manager_[key]) {\n    fireauth.AuthEventManager.manager_[key] =\n      new fireauth.AuthEventManager(\n        authDomain,\n        apiKey,\n        appName,\n        emulatorConfig\n      );\n  }\n  return fireauth.AuthEventManager.manager_[key];\n};\n\n\n/**\n * The interface that represents a specific type of Auth event processor.\n * @interface\n */\nfireauth.AuthEventProcessor = function() {};\n\n\n/**\n * Completes the processing of an external Auth event detected by the embedded\n * iframe.\n * @param {?fireauth.AuthEvent} authEvent External Auth event detected by\n *     iframe.\n * @param {!fireauth.AuthEventHandler} owner The owner of the event.\n * @return {!goog.Promise<undefined>}\n */\nfireauth.AuthEventProcessor.prototype.processAuthEvent =\n    function(authEvent, owner) {};\n\n\n\n/**\n * Redirect Auth event manager.\n * @param {!fireauth.AuthEventManager} manager The parent Auth event manager.\n * @constructor\n * @implements {fireauth.AuthEventProcessor}\n */\nfireauth.RedirectAuthEventProcessor = function(manager) {\n  this.manager_ = manager;\n  // Only one redirect result can be tracked on first load.\n  /**\n   * @private {?function():!goog.Promise<!fireauth.AuthEventManager.Result>}\n   *     Redirect result resolver. This will be used to resolve the\n   *     getRedirectResult promise. When the redirect result is obtained, this\n   *     field will be set.\n   */\n  this.redirectedUserPromise_ = null;\n  /**\n   * @private {!Array<function(!fireauth.AuthEventManager.Result)>} Pending\n   *     promise redirect resolver. When the redirect result is obtained and the\n   *     user is detected, this will be called.\n   */\n  this.redirectResolve_ = [];\n  /**\n   * @private {!Array<function(*)>} Pending Promise redirect rejecter. When the\n   *     redirect result is obtained and an error is detected, this will be\n   *     called.\n   */\n  this.redirectReject_ = [];\n  /** @private {?goog.Promise} Pending timeout promise for redirect. */\n  this.redirectTimeoutPromise_ = null;\n  /**\n   * @private {boolean} Whether redirect result is resolved. This is true\n   *     when a valid Auth event has been triggered.\n   */\n  this.redirectResultResolved_ = false;\n  /**\n   * @private {boolean} Whether an unrecoverable error was detected. This\n   *     includes web storage unsupported or operation not allowed errors.\n   */\n  this.unrecoverableErrorDetected_ = false;\n};\n\n\n/** Reset any previous redirect result. */\nfireauth.RedirectAuthEventProcessor.prototype.reset = function() {\n  // Reset to allow override getRedirectResult. This is relevant for Cordova\n  // environment where redirect events do not necessarily unload the current\n  // page.\n  this.redirectedUserPromise_ = null;\n  if (this.redirectTimeoutPromise_) {\n    this.redirectTimeoutPromise_.cancel();\n    this.redirectTimeoutPromise_ = null;\n  }\n};\n\n\n/**\n * Completes the processing of an external Auth event detected by the embedded\n * iframe.\n * @param {?fireauth.AuthEvent} authEvent External Auth event detected by\n *     iframe.\n * @param {!fireauth.AuthEventHandler} owner The owner of the event.\n * @return {!goog.Promise<undefined>}\n * @override\n */\nfireauth.RedirectAuthEventProcessor.prototype.processAuthEvent =\n    function(authEvent, owner) {\n  // This should not happen as fireauth.iframe.AuthRelay will not send null\n  // events.\n  if (!authEvent) {\n    return goog.Promise.reject(\n        new fireauth.AuthError(fireauth.authenum.Error.INVALID_AUTH_EVENT));\n  }\n  // Reset any pending redirect result. This event will overwrite it.\n  this.reset();\n  this.redirectResultResolved_ = true;\n  var mode = authEvent.getType();\n  var eventId = authEvent.getEventId();\n  // Check if web storage is not supported in the iframe.\n  var isWebStorageNotSupported =\n      authEvent.getError() &&\n      authEvent.getError()['code'] == 'auth/web-storage-unsupported';\n  /// Check if operation is supported in this environment.\n  var isOperationNotSupported =\n      authEvent.getError() &&\n      authEvent.getError()['code'] == 'auth/operation-not-supported-in-this-' +\n          'environment';\n  this.unrecoverableErrorDetected_ =\n      !!(isWebStorageNotSupported || isOperationNotSupported);\n  // UNKNOWN mode is always triggered on load by iframe when no popup/redirect\n  // data is available. If web storage unsupported error is thrown, process as\n  // error and not as unknown event. If the operation is not supported in this\n  // environment, also treat as an error and not as an unknown event.\n  if (mode == fireauth.AuthEvent.Type.UNKNOWN &&\n      !isWebStorageNotSupported &&\n      !isOperationNotSupported) {\n    return this.processUnknownEvent_();\n  } else if (authEvent.hasError()) {\n    return this.processErrorEvent_(authEvent, owner);\n  } else if (owner.getAuthEventHandlerFinisher(mode, eventId)) {\n    return this.processSuccessEvent_(authEvent, owner);\n  } else {\n    return goog.Promise.reject(\n        new fireauth.AuthError(fireauth.authenum.Error.INVALID_AUTH_EVENT));\n  }\n};\n\n\n/**\n * Sets an empty redirect result response when no redirect result is available.\n */\nfireauth.RedirectAuthEventProcessor.prototype.defaultToEmptyResponse =\n    function() {\n  // If the first event does not resolve redirectResult and no subscriber can\n  // handle it, set redirect result to null.\n  // An example of this scenario would be a link via redirect that was triggered\n  // by a user that was not logged in. canHandleAuthEvent will be false for all\n  // subscribers. So make sure getRedirectResult when called will resolve to a\n  // null user.\n  if (!this.redirectResultResolved_) {\n    this.redirectResultResolved_ = true;\n    // No Auth event available, getRedirectResult should resolve with null.\n    this.setRedirectResult_(false, null, null);\n  }\n};\n\n\n/**\n * Clears the cached redirect result as long as there is no pending redirect\n * result being processed. Unrecoverable errors will not be cleared.\n */\nfireauth.RedirectAuthEventProcessor.prototype.clearRedirectResult = function() {\n  // Clear the result if it is already resolved and no unrecoverable errors are\n  // detected.\n  if (this.redirectResultResolved_ && !this.unrecoverableErrorDetected_) {\n    this.setRedirectResult_(false, null, null);\n  }\n};\n\n\n/**\n * Processes the unknown event.\n * @return {!goog.Promise<undefined>}\n * @private\n */\nfireauth.RedirectAuthEventProcessor.prototype.processUnknownEvent_ =\n    function() {\n  // No Auth event available, getRedirectResult should resolve with null.\n  this.setRedirectResult_(false, null, null);\n  return goog.Promise.resolve();\n};\n\n\n/**\n * Processes an error event.\n * @param {?fireauth.AuthEvent} authEvent External Auth event detected by\n *     iframe.\n * @param {!fireauth.AuthEventHandler} owner The owner of the event.\n * @return {!goog.Promise<undefined>}\n * @private\n */\nfireauth.RedirectAuthEventProcessor.prototype.processErrorEvent_ =\n    function(authEvent, owner) {\n  // Set redirect result to resolve with null if event is not a redirect or\n  // reject with error if event is an error.\n  this.setRedirectResult_(true, null, authEvent.getError());\n  return goog.Promise.resolve();\n};\n\n\n/**\n * Processes a successful event.\n * @param {?fireauth.AuthEvent} authEvent External Auth event detected by\n *     iframe.\n * @param {!fireauth.AuthEventHandler} owner The owner of the event.\n * @return {!goog.Promise<undefined>}\n * @private\n */\nfireauth.RedirectAuthEventProcessor.prototype.processSuccessEvent_ =\n    function(authEvent, owner) {\n  var self = this;\n  var eventId = authEvent.getEventId();\n  var mode = authEvent.getType();\n  var handler = owner.getAuthEventHandlerFinisher(mode, eventId);\n  var requestUri = /** @type {string} */ (authEvent.getUrlResponse());\n  var sessionId = /** @type {string} */ (authEvent.getSessionId());\n  var postBody = /** @type {?string} */ (authEvent.getPostBody());\n  var tenantId = /** @type {?string} */ (authEvent.getTenantId());\n  var isRedirect = fireauth.AuthEvent.isRedirect(authEvent);\n  // Complete sign in or link account operation and then pass result to\n  // relevant pending popup promise.\n  return handler(requestUri, sessionId, tenantId, postBody)\n      .then(function(popupRedirectResponse) {\n    // Flow completed.\n    // For a redirect operation resolve with the popupRedirectResponse,\n    // otherwise resolve with null.\n    self.setRedirectResult_(isRedirect, popupRedirectResponse, null);\n  }).thenCatch(function(error) {\n    // Flow not completed due to error.\n    // For a redirect operation reject with the error, otherwise resolve\n    // with null.\n    self.setRedirectResult_(\n        isRedirect, null, /** @type {!fireauth.AuthError} */ (error));\n    // Always resolve.\n    return;\n  });\n};\n\n\n/**\n * Sets redirect error result.\n * @param {!fireauth.AuthError} error The redirect operation error.\n * @private\n */\nfireauth.RedirectAuthEventProcessor.prototype.setRedirectReject_ =\n    function(error) {\n  // If a redirect error detected, reject getRedirectResult with that error.\n  this.redirectedUserPromise_ = function() {\n    return goog.Promise.reject(error);\n  };\n  // Reject all pending getRedirectResult promises.\n  if (this.redirectReject_.length) {\n    for (var i = 0; i < this.redirectReject_.length; i++) {\n      this.redirectReject_[i](error);\n    }\n  }\n};\n\n\n/**\n * Sets redirect success result.\n * @param {!fireauth.AuthEventManager.Result} popupRedirectResult The\n *     resolved user for a successful or null user redirect.\n * @private\n */\nfireauth.RedirectAuthEventProcessor.prototype.setRedirectResolve_ =\n    function(popupRedirectResult) {\n  // If a redirect user detected, resolve getRedirectResult with the\n  // popupRedirectResult.\n  // Result should not be null in this case.\n  this.redirectedUserPromise_ = function() {\n    return goog.Promise.resolve(\n        /** @type {!fireauth.AuthEventManager.Result} */ (popupRedirectResult));\n  };\n  // Resolve all pending getRedirectResult promises.\n  if (this.redirectResolve_.length) {\n    for (var i = 0; i < this.redirectResolve_.length; i++) {\n      this.redirectResolve_[i](\n          /** @type {!fireauth.AuthEventManager.Result} */ (\n              popupRedirectResult));\n    }\n  }\n};\n\n\n/**\n * @param {boolean} isRedirect Whether Auth event is a redirect event.\n * @param {?fireauth.AuthEventManager.Result} popupRedirectResult The\n *     resolved user for a successful redirect. This user is null if no redirect\n *     operation run.\n * @param {?fireauth.AuthError} error The redirect operation error.\n * @private\n */\nfireauth.RedirectAuthEventProcessor.prototype.setRedirectResult_ =\n    function(isRedirect, popupRedirectResult, error) {\n  if (isRedirect) {\n    // This is a redirect operation, either resolves with user or error.\n    if (error) {\n      // If a redirect error detected, reject getRedirectResult with that error.\n      this.setRedirectReject_(error);\n    } else {\n      // If a redirect user detected, resolve getRedirectResult with the\n      // popupRedirectResult.\n      // Result should not be null in this case.\n      this.setRedirectResolve_(\n          /** @type {!fireauth.AuthEventManager.Result} */ (\n              popupRedirectResult));\n    }\n  } else {\n    // Not a redirect, set redirectUser_ to return null.\n    this.setRedirectResolve_({\n      'user': null\n    });\n  }\n  // Reset all pending promises.\n  this.redirectResolve_ = [];\n  this.redirectReject_ = [];\n};\n\n\n/**\n * Returns the redirect result. If coming back from a successful redirect sign\n * in, will resolve to the signed in user. If coming back from an unsuccessful\n * redirect sign, will reject with the proper error. If no redirect operation\n * called, resolves with null.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.RedirectAuthEventProcessor.prototype.getRedirectResult = function() {\n  var self = this;\n  // Initial result could be overridden in the case of Cordova.\n  // Auth domain must be included for this to resolve.\n  // If still pending just return the pending promise.\n  var p = new goog.Promise(function(resolve, reject) {\n    // The following logic works if this method was called before Auth event\n    // is triggered.\n    if (!self.redirectedUserPromise_) {\n      // Save resolves and rejects of pending promise for redirect operation.\n      self.redirectResolve_.push(resolve);\n      self.redirectReject_.push(reject);\n      // Start timeout listener to getRedirectResult pending promise.\n      // Call this only when redirectedUserPromise_ is not determined.\n      self.startRedirectTimeout_();\n    } else {\n      // Called after Auth event is triggered.\n      self.redirectedUserPromise_().then(resolve, reject);\n    }\n  });\n  return /** @type {!goog.Promise<!fireauth.AuthEventManager.Result>} */ (p);\n};\n\n\n/**\n * Starts timeout listener for getRedirectResult pending promise. This method\n * should not be called again after getRedirectResult's redirectedUserPromise_\n * is determined.\n * @private\n */\nfireauth.RedirectAuthEventProcessor.prototype.startRedirectTimeout_ =\n    function() {\n  // Expire pending timeout promise for popup operation.\n  var self = this;\n  var error = new fireauth.AuthError(\n      fireauth.authenum.Error.TIMEOUT);\n  if (this.redirectTimeoutPromise_) {\n    this.redirectTimeoutPromise_.cancel();\n  }\n  // For redirect mode.\n  this.redirectTimeoutPromise_ =\n      goog.Timer.promise(fireauth.AuthEventManager.REDIRECT_TIMEOUT_MS_.get())\n      .then(function() {\n        // If not resolved yet, reject with timeout error.\n        if (!self.redirectedUserPromise_) {\n          // Consider redirect result resolved.\n          self.redirectResultResolved_ = true;\n          self.setRedirectResult_(true, null, error);\n        }\n      });\n\n};\n\n\n\n/**\n * Popup Auth event manager.\n * @param {!fireauth.AuthEventManager} manager The parent Auth event manager.\n * @constructor\n * @implements {fireauth.AuthEventProcessor}\n */\nfireauth.PopupAuthEventProcessor = function(manager) {\n  this.manager_ = manager;\n};\n\n\n/**\n * Completes the processing of an external Auth event detected by the embedded\n * iframe.\n * @param {?fireauth.AuthEvent} authEvent External Auth event detected by\n *     iframe.\n * @param {!fireauth.AuthEventHandler} owner The owner of the event.\n * @return {!goog.Promise<undefined>}\n * @override\n */\nfireauth.PopupAuthEventProcessor.prototype.processAuthEvent =\n    function(authEvent, owner) {\n  // This should not happen as fireauth.iframe.AuthRelay will not send null\n  // events.\n  if (!authEvent) {\n    return goog.Promise.reject(\n        new fireauth.AuthError(fireauth.authenum.Error.INVALID_AUTH_EVENT));\n  }\n  var mode = authEvent.getType();\n  var eventId = authEvent.getEventId();\n  if (authEvent.hasError()) {\n    return this.processErrorEvent_(authEvent, owner);\n  } else if (owner.getAuthEventHandlerFinisher(mode, eventId)) {\n    return this.processSuccessEvent_(authEvent, owner);\n  } else {\n    return goog.Promise.reject(\n        new fireauth.AuthError(fireauth.authenum.Error.INVALID_AUTH_EVENT));\n  }\n};\n\n\n/**\n * Processes an error event.\n * @param {?fireauth.AuthEvent} authEvent External Auth event detected by\n *     iframe.\n * @param {!fireauth.AuthEventHandler} owner The owner of the event.\n * @return {!goog.Promise<undefined>}\n * @private\n */\nfireauth.PopupAuthEventProcessor.prototype.processErrorEvent_ =\n    function(authEvent, owner) {\n  var eventId = authEvent.getEventId();\n  var mode = authEvent.getType();\n  // For pending popup promises trigger rejects with the error.\n  owner.resolvePendingPopupEvent(mode, null, authEvent.getError(), eventId);\n  return goog.Promise.resolve();\n};\n\n\n/**\n * Processes a successful event.\n * @param {?fireauth.AuthEvent} authEvent External Auth event detected by\n *     iframe.\n * @param {!fireauth.AuthEventHandler} owner The owner of the event.\n * @return {!goog.Promise<undefined>}\n * @private\n */\nfireauth.PopupAuthEventProcessor.prototype.processSuccessEvent_ =\n    function(authEvent, owner) {\n  var eventId = authEvent.getEventId();\n  var mode = authEvent.getType();\n  var handler = owner.getAuthEventHandlerFinisher(mode, eventId);\n  // Successful operation, complete the exchange for an ID token.\n  var requestUri = /** @type {string} */ (authEvent.getUrlResponse());\n  var sessionId = /** @type {string} */ (authEvent.getSessionId());\n  var postBody = /** @type {?string} */ (authEvent.getPostBody());\n  var tenantId = /** @type {?string} */ (authEvent.getTenantId());\n  // Complete sign in or link account operation and then pass result to\n  // relevant pending popup promise.\n  return handler(requestUri, sessionId, tenantId, postBody)\n      .then(function(popupRedirectResponse) {\n    // Flow completed.\n    // Resolve pending popup promise if it exists.\n    owner.resolvePendingPopupEvent(mode, popupRedirectResponse, null, eventId);\n  }).thenCatch(function(error) {\n    // Flow not completed due to error.\n    // Resolve pending promise if it exists.\n    owner.resolvePendingPopupEvent(\n        mode, null, /** @type {!fireauth.AuthError} */ (error), eventId);\n    // Always resolve.\n    return;\n  });\n};\n\n\n\n/**\n * The interface that represents an Auth event handler. It provides the\n * ability for the Auth event manager to determine the owner of an Auth event,\n * the ability to resolve a pending popup event and the appropriate handler for\n * an event.\n * @interface\n */\nfireauth.AuthEventHandler = function() {};\n\n\n/**\n * @param {!fireauth.AuthEvent.Type} mode The Auth type mode.\n * @param {?string=} opt_eventId The event ID.\n * @return {boolean} Whether the Auth event handler can handler the provided\n *     event.\n */\nfireauth.AuthEventHandler.prototype.canHandleAuthEvent =\n    function(mode, opt_eventId) {};\n\n\n/**\n * Completes the pending popup operation. If error is not null, rejects with the\n * error. Otherwise, it resolves with the popup redirect result.\n * @param {!fireauth.AuthEvent.Type} mode The Auth type mode.\n * @param {?fireauth.AuthEventManager.Result} popupRedirectResult The result\n *     to resolve with when no error supplied.\n * @param {?fireauth.AuthError} error When supplied, the promise will reject.\n * @param {?string=} opt_eventId The event ID.\n */\nfireauth.AuthEventHandler.prototype.resolvePendingPopupEvent =\n    function(mode, popupRedirectResult, error, opt_eventId) {};\n\n\n/**\n * Returns the handler's appropriate popup and redirect sign in operation\n * finisher.\n * @param {!fireauth.AuthEvent.Type} mode The Auth type mode.\n * @param {?string=} opt_eventId The optional event ID.\n * @return {?function(string, string, ?string,\n *     ?string=):!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.AuthEventHandler.prototype.getAuthEventHandlerFinisher =\n    function(mode, opt_eventId) {};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n /**\n * @fileoverview Defines the firebase.auth.AuthSettings structure.\n */\n\ngoog.provide('fireauth.AuthSettings');\n\n\n/**\n * The class used to initialize an Auth settings object currently used to\n * enable or disable app verification for testing.\n * @constructor\n */\nfireauth.AuthSettings = function() {\n  this.appVerificationDisabledForTesting_ = false;\n  Object.defineProperty(\n      /** @type {!Object} */ (this),\n      'appVerificationDisabled',\n      {\n        /**\n         * @this {!Object}\n         * @return {boolean} The current status.\n         */\n        get: function() {\n          return this.getAppVerificationDisabledForTesting();\n        },\n        /**\n         * @this {!Object}\n         * @param {boolean} value The new status.\n         */\n        set: function(value) {\n          this.setAppVerificationDisabledForTesting(value);\n        },\n        enumerable: false\n      });\n};\n\n\n/**\n * Sets whether app verification is disable for testing.\n * @param {boolean} status App verification status for testing.\n */\nfireauth.AuthSettings.prototype.setAppVerificationDisabledForTesting =\n    function(status) {\n  this.appVerificationDisabledForTesting_ = status;\n};\n\n\n/**\n * @return {boolean} Whether app verification is enabled or disabled for\n *     testing.\n */\nfireauth.AuthSettings.prototype.getAppVerificationDisabledForTesting =\n    function() {\n  return this.appVerificationDisabledForTesting_;\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the firebase.auth.ConfirmationResult. This is needed\n * to provide first class support for phone Auth API: signInWithPhoneNumber,\n * linkWithPhoneNumber and reauthenticateWithPhoneNumber.\n */\n\ngoog.provide('fireauth.ConfirmationResult');\n\ngoog.require('fireauth.PhoneAuthProvider');\ngoog.require('fireauth.object');\ngoog.require('goog.Promise');\n\n\n/**\n * The confirmation result class. This takes in the verification ID returned\n * from the phone Auth provider and the credential resolver to run when\n * confirming with a verification code.\n * @param {string} verificationId The verification ID returned from the Phone\n *     Auth provider after sending the verification code.\n * @param {!function(!fireauth.AuthCredential):\n *     !goog.Promise<!fireauth.AuthEventManager.Result>} credentialResolver a\n *     function that takes in an AuthCredential and returns a promise that\n *     resolves with a UserCredential object.\n * @constructor\n */\nfireauth.ConfirmationResult = function(verificationId, credentialResolver) {\n  /**\n   * @const @private {!function(!fireauth.AuthCredential):\n   *     !goog.Promise<!fireauth.AuthEventManager.Result>} A function that takes\n   *     in an AuthCredential and returns a promise that resolves with a\n   *     UserCredential object.\n   */\n  this.credentialResolver_ = credentialResolver;\n  // Set verificationId as read-only property.\n  fireauth.object.setReadonlyProperty(this, 'verificationId', verificationId);\n};\n\n\n/**\n * Confirms the verification code and returns a promise that resolves with the\n * User Credential object.\n * @param {string} verificationCode The phone Auth verification code to use to\n *     complete the Auth flow.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.ConfirmationResult.prototype.confirm = function(verificationCode) {\n  // Initialize a phone Auth credential with the verification ID and code.\n  var credential = fireauth.PhoneAuthProvider.credential(\n      this['verificationId'], verificationCode);\n  // Run the credential resolver with the phone Auth credential and return its\n  // result.\n  return this.credentialResolver_(credential);\n};\n\n\n/**\n * Initializes a ConfirmationResult using the provided phone number, app\n * verifier and returns it asynchronously. On code confirmation, the result will\n * resolve using the credential resolver provided.\n * @param {!fireauth.Auth} auth The corresponding Auth instance.\n * @param {string} phoneNumber The phone number to authenticate with.\n * @param {!firebase.auth.ApplicationVerifier} appVerifier The application\n *     verifier.\n * @param {!function(!fireauth.AuthCredential):\n *     !goog.Promise<!fireauth.AuthEventManager.Result>} credentialResolver a\n *     function that takes in an AuthCredential and returns a promise that\n *     resolves with a UserCredential object.\n * @return {!goog.Promise<!fireauth.ConfirmationResult>}\n */\nfireauth.ConfirmationResult.initialize =\n    function(auth, phoneNumber, appVerifier, credentialResolver) {\n  // Initialize a phone Auth provider instance using the provided Auth\n  // instance.\n  var phoneAuthProvider = new fireauth.PhoneAuthProvider(auth);\n  // Verify the phone number.\n  return phoneAuthProvider.verifyPhoneNumber(phoneNumber, appVerifier)\n      .then(function(verificationId) {\n        // When code is sent and verification ID is returned, initialize a\n        // ConfirmationResult with the returned verification ID and credential\n        // resolver, and return that instance.\n        return new fireauth.ConfirmationResult(\n            verificationId, credentialResolver);\n      });\n};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the firebase.auth.IdTokenResult class that is obtained\n * from getIdTokenResult. It contains the ID token JWT string and other helper\n * properties for getting different data associated with the token as well as\n * all the decoded payload claims.\n */\n\ngoog.provide('fireauth.IdTokenResult');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.IdToken');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.object');\ngoog.require('fireauth.util');\n\n\n\n/**\n * This is the ID token result object obtained from getIdTokenResult. It\n * contains the ID token JWT string and other helper properties for getting\n * different data associated with the token as well as all the decoded payload\n * claims.\n * @param {string} tokenString The JWT token.\n * @constructor\n */\nfireauth.IdTokenResult = function(tokenString) {\n  var idToken = fireauth.IdToken.parseIdTokenClaims(tokenString);\n  if (!idToken || !idToken['exp'] || !idToken['auth_time'] || !idToken['iat']) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.INTERNAL_ERROR,\n        'An internal error occurred. The token obtained by Firebase appears ' +\n        'to be malformed. Please retry the operation.');\n  }\n  fireauth.object.setReadonlyProperties(this, {\n    'token': tokenString,\n    'expirationTime': fireauth.util.utcTimestampToDateString(\n        idToken['exp'] * 1000),\n    'authTime': fireauth.util.utcTimestampToDateString(\n        idToken['auth_time'] * 1000),\n    'issuedAtTime': fireauth.util.utcTimestampToDateString(\n        idToken['iat'] * 1000),\n    'signInProvider': (idToken['firebase'] &&\n                       idToken['firebase']['sign_in_provider']) ?\n                      idToken['firebase']['sign_in_provider'] : null,\n    'signInSecondFactor': (idToken['firebase'] &&\n                           idToken['firebase']['sign_in_second_factor']) ?\n                          idToken['firebase']['sign_in_second_factor'] : null,\n    'claims': idToken\n  });\n};\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the multi-factor resolver class used to facilitate\n *     recovery when a multi-factor user tries to sign-in with a first factor.\n */\n\ngoog.provide('fireauth.MultiFactorResolver');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.MultiFactorInfo');\ngoog.require('fireauth.MultiFactorSession');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.object');\ngoog.require('goog.array');\ngoog.require('goog.object');\n\n\n/**\n * Initializes a `MultiFactorResolver` instance. This is used when a\n * multi-factor user signs in with the first factor but is required to provide\n * a second factor assertion before completing sign-in.\n *\n * @param {!fireauth.Auth} auth The Auth instance.\n * @param {!fireauth.MultiFactorResolver.ErrorResponse} errorResponse The server\n *     error response containing the pending multi-factor credential.\n * @param {function({idToken: string, refreshToken: string}):\n *         !goog.Promise<!fireauth.AuthEventManager.Result>} onIdTokenResolver\n *     A function that takes the assertion token response and any previous\n *     information returned with the error and completes sign in with a\n *     `UserCredential`.\n * @constructor\n */\nfireauth.MultiFactorResolver = function(\n    auth, errorResponse, onIdTokenResolver) {\n  var pendingCredential = errorResponse && errorResponse[\n      fireauth.MultiFactorResolver.SignInResponseField.MFA_PENDING_CREDENTIAL];\n  if (!pendingCredential) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.ARGUMENT_ERROR,\n        'Internal assert: Invalid MultiFactorResolver');\n  }\n  /** @const @private {!fireauth.Auth} The Auth instance. */\n  this.auth_ = auth;\n  /**\n   * @const @private {!fireauth.MultiFactorResolver.ErrorResponse} The server\n   *     error response with the pending credential.\n   */\n  this.errorResponse_ = goog.object.clone(errorResponse);\n  /**\n   * @const @private {function({idToken: string, refreshToken: string}):\n   *                  !goog.Promise<!fireauth.AuthEventManager.Result>} The ID\n   *     token resolver.\n   */\n  this.onIdTokenResolver_ = onIdTokenResolver;\n  /**\n   * @const @private {!fireauth.MultiFactorSession} The corresponding\n   *     multi-factor session.\n   */\n  this.session_ = new fireauth.MultiFactorSession(\n      null,\n      pendingCredential);\n  /**\n   * @const @private {!Array<!fireauth.MultiFactorInfo>} The list of\n   *     multi-factor hints corresponding to the current user session.\n   */\n  this.hints_ = [];\n  var enrollmentList = errorResponse[\n      fireauth.MultiFactorResolver.SignInResponseField.MFA_INFO] || [];\n  var self = this;\n  goog.array.forEach(enrollmentList, function(mfaEnrollment) {\n    var info = fireauth.MultiFactorInfo.fromServerResponse(mfaEnrollment);\n    if (info) {\n      self.hints_.push(info);\n    }\n  });\n  fireauth.object.setReadonlyProperty(this, 'auth', this.auth_);\n  fireauth.object.setReadonlyProperty(this, 'session', this.session_);\n  fireauth.object.setReadonlyProperty(\n      this, 'hints', this.hints_);\n};\n\n\n/**\n * The server side error response on multi-factor sign-in.\n * @typedef {{\n *   mfaInfo: (?Array<!Object>|undefined),\n *   mfaPendingCredential: (?string|undefined)\n * }}\n */\nfireauth.MultiFactorResolver.ErrorResponse;\n\n/**\n * Sign in response fields for multi-factor sign-in.\n * @enum {string}\n */\nfireauth.MultiFactorResolver.SignInResponseField = {\n  MFA_INFO: 'mfaInfo',\n  MFA_PENDING_CREDENTIAL: 'mfaPendingCredential'\n};\n\n\n/**\n * Completes the second factor sign-in with the multi-factor assertion provided\n * and returns a promise that resolves with the `UserCredential` object.\n *\n * @param {!fireauth.MultiFactorAssertion} assertion The multi-factor assertion\n *     to resolve sign-in with.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>} A promise that\n *     resolves with the `UserCredential` after ID token processing.\n */\nfireauth.MultiFactorResolver.prototype.resolveSignIn = function(assertion) {\n  var self = this;\n  return assertion.process(this.auth_.getRpcHandler(), this.session_)\n      .then(function(result) {\n        var newSignInResponse = goog.object.clone(self.errorResponse_);\n        // These fields are no longer needed.\n        delete newSignInResponse[\n            fireauth.MultiFactorResolver.SignInResponseField.MFA_INFO];\n        delete newSignInResponse[fireauth.MultiFactorResolver\n            .SignInResponseField.MFA_PENDING_CREDENTIAL];\n        goog.object.extend(newSignInResponse, result);\n        // Return ID token/refresh token result and the original error response.\n        // This is needed as the original server response may contain additional\n        // data such as OAuth credentials, raw user info, etc that needs to be\n        // returned to the developer on successful sign-in.\n        return self.onIdTokenResolver_(\n            /** @type {{idToken: string, refreshToken: string}} */ (\n                newSignInResponse));\n      });\n};\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n \n/**\n * @fileoverview Defines the MultiFactorError class, a subclass of\n * fireauth.AuthError.\n */\n\n\ngoog.provide('fireauth.MultiFactorError');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.MultiFactorResolver');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.object');\ngoog.require('goog.object');\n\n\n/**\n * Multi-factor error with resolver, used to resolve sign-in after a two-factor\n * user signs in with a first factor and is required to prove ownership of the\n * second factor.\n * @param {!fireauth.Auth} auth The Auth instance.\n * @param {!fireauth.MultiFactorResolver.ErrorResponse} errorResponse The server\n *     error response containing the pending multi-factor credential.\n * @param {function({idToken: string, refreshToken: string}):\n *         !goog.Promise<!fireauth.AuthEventManager.Result>} onIdTokenResolver\n *     A function that takes the assertion token response and any previous\n *     information returned with the error and completes sign in with a\n *     `UserCredential`.\n * @param {string=} message The optional custom human-readable message. If not\n *     provided, a default message will be used.\n * @constructor\n * @extends {fireauth.AuthError}\n */\nfireauth.MultiFactorError = function(\n    auth, errorResponse, onIdTokenResolver, message) {\n  fireauth.MultiFactorError.base(\n      this,\n      'constructor',\n      fireauth.authenum.Error.MFA_REQUIRED,\n      message,\n      errorResponse);\n  this.serverResponse_ = goog.object.clone(errorResponse);\n  /**\n   * @const @private {!fireauth.MultiFactorResolver} The multi-factor resolver\n   *     instance.\n   */\n  this.resolver_ =\n      new fireauth.MultiFactorResolver(auth, errorResponse, onIdTokenResolver);\n  fireauth.object.setReadonlyProperty(this, 'resolver', this.resolver_);\n};\ngoog.inherits(fireauth.MultiFactorError, fireauth.AuthError);\n\n\n/**\n * Initializes a `MultiFactorError` from the plain object provided. If the\n * object is not a valid `MultiFactorError`, null is returned.\n * @param {?Object|undefined} response The object response to convert to a\n *     fireauth.MultiFactorError.\n * @param {!fireauth.Auth} auth The Auth instance.\n * @param {function({idToken: string, refreshToken: string}):\n *         !goog.Promise<!fireauth.AuthEventManager.Result>} onIdTokenResolver\n *     A function that takes the assertion token response and any previous\n *     information returned with the error and completes sign in with a\n *     `UserCredential`.\n * @return {?fireauth.MultiFactorError} The `MultiFactorError` error\n *     representation of the response. null is returned if the response is not\n *     a valid MultiFactorError plain object representation.\n */\nfireauth.MultiFactorError.fromPlainObject =\n    function(response, auth, onIdTokenResolver) {\n  if (response &&\n      goog.isObject(response['serverResponse']) &&\n      response['code'] === 'auth/' + fireauth.authenum.Error.MFA_REQUIRED) {\n    try {\n      return new fireauth.MultiFactorError(\n          auth,\n          /** @type {!fireauth.MultiFactorResolver.ErrorResponse} */ (\n              response['serverResponse']),\n          onIdTokenResolver,\n          response['message']);\n    } catch (e) {\n      return null;\n    }\n  }\n  return null;\n};\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n \n/**\n * @fileoverview Defines the `firebase.auth.MultiFactorAssertion` abstract class\n * and all its subclasses, such as PhoneMultiFactorAssertion.\n */\n\ngoog.provide('fireauth.AuthCredentialMultiFactorAssertion');\ngoog.provide('fireauth.MultiFactorAssertion');\ngoog.provide('fireauth.PhoneMultiFactorAssertion');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.MultiFactorAuthCredential');\ngoog.require('fireauth.MultiFactorSession');\ngoog.require('fireauth.PhoneAuthProvider');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.object');\n\n\n/**\n * Abstract class representing a `firebase.auth.MultiFactorAssertion` interface.\n * This is used to facilitate enrollment of a second factor on an existing user\n * or sign-in of a user who already verified the first factor.\n * @abstract\n * @constructor\n */\nfireauth.MultiFactorAssertion = function() {};\n\n\n/**\n * Finalizes the 2nd factor enrollment flow with the current\n * MultiFactorAssertion.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler instance.\n * @param {!fireauth.MultiFactorEnrollmentRequestIdentifier} enrollmentRequest\n *     The enrollment request identifying the user.\n * @return {!goog.Promise<{idToken: string, refreshToken: string}>} A promise\n *     that resolves with the updated ID and refresh tokens.\n * @protected\n */\nfireauth.MultiFactorAssertion.prototype.finalizeEnrollmentWithVerificationInfo =\n    goog.abstractMethod;\n\n\n/**\n * Finalizes the 2nd factor sign-in flow with the current MultiFactorAssertion.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler instance.\n * @param {!fireauth.MultiFactorSignInRequestIdentifier} signInRequest\n *     The sign-in request identifying the user.\n * @return {!goog.Promise<{idToken: string, refreshToken: string}>} A promise\n *     that resolves with the signed in user's ID and refresh tokens.\n * @protected\n */\nfireauth.MultiFactorAssertion.prototype.finalizeSignInWithVerificationInfo =\n    goog.abstractMethod;\n\n\n/**\n * Processes the `MultiFactorAssertion` instance using the `MultiFactorSession`\n * provided and optional display name for enrollment flows.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler instance.\n * @param {!fireauth.MultiFactorSession} session The multi-factor session\n *     instance.\n * @param {?string=} displayName The optional display name for a multi-factor\n *     enrollment.\n * @return {!goog.Promise<{idToken: string, refreshToken: string}>} A promise\n *     that resolves with the signed in or enrolled user's ID and refresh\n *     tokens.\n */\nfireauth.MultiFactorAssertion.prototype.process =\n    function(rpcHandler, session, displayName) {\n  // Session obtained from user in enroll.\n  // It is obtained from error in resolver.\n  if (session.type == fireauth.MultiFactorSession.Type.ENROLL) {\n    return this.finalizeMfaEnrollment_(rpcHandler, session, displayName);\n  } else {\n    return this.finalizeMfaSignIn_(rpcHandler, session);\n  }\n};\n\n\n/**\n * Finalizes the multi-factor enrollment.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler instance.\n * @param {!fireauth.MultiFactorSession} session The multi-factor session for\n *     the current signed in user.\n * @param {?string=} displayName The optional display name for a multi-factor\n *     enrollment.\n * @return {!goog.Promise<{idToken: string, refreshToken: string}>} A promise\n *     that resolves with the enrolled user's ID and refresh tokens.\n * @private\n */\nfireauth.MultiFactorAssertion.prototype.finalizeMfaEnrollment_ =\n    function(rpcHandler, session, displayName) {\n  var self = this;\n  return session.getRawSession().then(function(rawSession) {\n    var request = {\n      'idToken': rawSession\n    };\n    if (typeof displayName !== 'undefined') {\n      request['displayName'] = displayName;\n    }\n    return self.finalizeEnrollmentWithVerificationInfo(rpcHandler, request);\n  });\n};\n\n\n/**\n * Finalizes the multi-factor sign-in.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler instance.\n * @param {!fireauth.MultiFactorSession} session The multi-factor session for\n *     the multi-factor enrolled user trying to sign-in.\n * @return {!goog.Promise<{idToken: string, refreshToken: string}>} A promise\n *     that resolves with the signed in user's ID and refresh tokens.\n * @private\n */\nfireauth.MultiFactorAssertion.prototype.finalizeMfaSignIn_ =\n    function(rpcHandler, session) {\n  var self = this;\n  return session.getRawSession().then(function(rawSession) {\n    var request = {\n      'mfaPendingCredential': rawSession,\n    };\n    return self.finalizeSignInWithVerificationInfo(rpcHandler, request);\n  });\n};\n\n\n/**\n * Defines a class for handling MultiFactorAssertions based on\n * `MultiFactorAuthCredentials`.\n * @param {!fireauth.MultiFactorAuthCredential} multiFactorAuthCredential The\n *     multi-factor AuthCredential.\n * @constructor\n * @extends {fireauth.MultiFactorAssertion}\n */\nfireauth.AuthCredentialMultiFactorAssertion =\n    function(multiFactorAuthCredential) {\n  // This assumes the factor ID matches the credential providerId.\n  // If this is ever not true, the subclass can overwrite that.\n  fireauth.object.setReadonlyProperty(\n      this, 'factorId', multiFactorAuthCredential.providerId);\n  /**\n   * @protected {!fireauth.MultiFactorAuthCredential} The underlying\n   *     multi-factor AuthCredential.\n   */\n  this.multiFactorAuthCredential = multiFactorAuthCredential;\n};\ngoog.inherits(\n    fireauth.AuthCredentialMultiFactorAssertion, fireauth.MultiFactorAssertion);\n\n\n/**\n * Finalizes the 2nd factor enrollment flow with the current\n * MultiFactorAssertion.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler instance.\n * @param {!fireauth.MultiFactorEnrollmentRequestIdentifier} enrollmentRequest\n *     The enrollment request identifying the user.\n * @return {!goog.Promise<{idToken: string, refreshToken: string}>} A promise\n *     that resolves with the updated ID and refresh tokens.\n * @protected\n * @override\n */\nfireauth.AuthCredentialMultiFactorAssertion.prototype\n    .finalizeEnrollmentWithVerificationInfo = function(rpcHandler,\n                                                       enrollmentRequest) {\n  return this.multiFactorAuthCredential.finalizeMfaEnrollment(\n      rpcHandler, enrollmentRequest);\n};\n\n\n/**\n * Finalizes the 2nd factor sign-in flow with the current MultiFactorAssertion.\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler instance.\n * @param {!fireauth.MultiFactorSignInRequestIdentifier} signInRequest\n *     The sign-in request identifying the user.\n * @return {!goog.Promise<{idToken: string, refreshToken: string}>} A promise\n *     that resolves with the signed in user's ID and refresh tokens.\n * @protected\n * @override\n */\nfireauth.AuthCredentialMultiFactorAssertion.prototype\n    .finalizeSignInWithVerificationInfo = function(rpcHandler,\n                                                   signInRequest) {\n  return this.multiFactorAuthCredential.finalizeMfaSignIn(\n      rpcHandler, signInRequest);\n};\n\n\n/**\n * Defines a class for handling MultiFactorAssertions based on\n * PhoneAuthCredentials. This class extends `AuthCredentialMultiFactorAssertion`\n * but for `PhoneAuthCredentials` only.\n * @param {!fireauth.PhoneAuthCredential} phoneAuthCredential\n * @constructor\n * @extends {fireauth.AuthCredentialMultiFactorAssertion}\n */\nfireauth.PhoneMultiFactorAssertion = function(phoneAuthCredential) {\n  fireauth.PhoneMultiFactorAssertion.base(\n      this, 'constructor', phoneAuthCredential);\n  // This class supports phone credentials only.\n  if (this.multiFactorAuthCredential.providerId !=\n      fireauth.PhoneAuthProvider['PROVIDER_ID']) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.ARGUMENT_ERROR,\n        'firebase.auth.PhoneMultiFactorAssertion requires a valid ' +\n        'firebase.auth.PhoneAuthCredential');\n  }\n};\ngoog.inherits(\n    fireauth.PhoneMultiFactorAssertion,\n    fireauth.AuthCredentialMultiFactorAssertion);\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n /**\n * @fileoverview Defines fireauth.UserEvent and fireauth.UserEventType.\n */\n\ngoog.provide('fireauth.UserEvent');\ngoog.provide('fireauth.UserEventType');\n\ngoog.require('goog.events');\ngoog.require('goog.events.Event');\n\n\n/**\n * User custom event.\n * @param {string} type The event type.\n * @param {?Object=} properties The optional properties to set to the custom\n *     event using same keys as object provided.\n * @constructor\n * @extends {goog.events.Event}\n */\nfireauth.UserEvent = function(type, properties) {\n  goog.events.Event.call(this, type);\n  // If optional properties provided.\n  // Add each property to custom event.\n  for (var key in properties) {\n    this[key] = properties[key];\n  }\n};\ngoog.inherits(fireauth.UserEvent, goog.events.Event);\n\n\n/**\n * Events dispatched by the user.\n * @enum {string}\n */\nfireauth.UserEventType = {\n  /** Dispatched when token is changed due to Auth event. */\n  TOKEN_CHANGED: 'tokenChanged',\n\n  /** Dispatched when user is deleted. */\n  USER_DELETED: 'userDeleted',\n\n  /**\n   * Dispatched when user session is invalidated. This could happen when the\n   * following errors occur: user-disabled or user-token-expired.\n   */\n  USER_INVALIDATED: 'userInvalidated',\n\n  /** Dispatched when the user is reloaded. */\n  USER_RELOADED: 'userReloaded'\n};\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the `MultiFactorUser` class used to retrieve the\n * enrolled second factors on a user and to facilitate enrollment and\n * unenrollment of second factors.\n */\n\ngoog.provide('fireauth.MultiFactorUser');\n\ngoog.require('fireauth.MultiFactorAssertion');\ngoog.require('fireauth.MultiFactorInfo');\ngoog.require('fireauth.MultiFactorSession');\ngoog.require('fireauth.UserEventType');\ngoog.require('fireauth.object');\ngoog.require('goog.array');\ngoog.require('goog.events');\n\n\n/**\n * Initializes the multi-factor instance corresponding to a signed in user.\n * This provides the ability to retrieve the enrolled second factors for that\n * user, as well as the ability to enroll new second factors or unenroll\n * existing ones.\n * @param {!fireauth.AuthUser} user The user the multi-factor instance\n *     represents.\n * @param {?fireauth.AuthUser.AccountInfo=} accountInfo The optional user\n *     account info.\n * @constructor\n */\nfireauth.MultiFactorUser = function(user, accountInfo) {\n  /**\n   * @private {!fireauth.AuthUser} The user this multi-factor instance\n   *     represents.\n   */\n  this.user_ = user;\n  /** @private {!Array<!fireauth.MultiFactorInfo>} The enrolled factors. */\n  this.enrolledFactors_ = [];\n  /**\n   * @const @private {function({userServerResponse: !Object})} The handler for\n   *     user reload events.\n   */\n  this.userReloadedListener_ = goog.bind(this.handleUserReload_, this);\n  goog.events.listen(\n      this.user_,\n      fireauth.UserEventType.USER_RELOADED,\n      this.userReloadedListener_);\n  var enrolledFactors = [];\n  // AccountInfo is typically loaded from storage where it is stored in plain\n  // object format. Otherwise, the enrolled factors will be loaded from\n  // getAccountInfo response triggered by user reload event.\n  if (accountInfo &&\n      accountInfo['multiFactor'] &&\n      accountInfo['multiFactor']['enrolledFactors']) {\n    var enrolledFactorsPlainObject =\n        accountInfo['multiFactor']['enrolledFactors'];\n    goog.array.forEach(enrolledFactorsPlainObject, function(mfaEnrollment) {\n      var info = fireauth.MultiFactorInfo.fromPlainObject(mfaEnrollment);\n      if (info) {\n        enrolledFactors.push(info);\n      }\n    });\n  }\n  this.updateEnrolledFactors_(enrolledFactors);\n};\n\n\n/**\n * @const @private {string} The key for the list of second factor enrollments in\n *     the GetAccountInfo server response.\n */\nfireauth.MultiFactorUser.GET_ACCOUNT_INFO_MFA_INFO_ = 'mfaInfo';\n\n\n/** @return {!fireauth.AuthUser} The corresponding user. */\nfireauth.MultiFactorUser.prototype.getUser = function() {\n  return this.user_;\n};\n\n\n/**\n * Extracts the enrolled factors from getAccountInfo response and returns an\n * array of corresponding multi-factor info data.\n * @param {!Object} resp The GetAccountInfo response object.\n * @return {!Array<!fireauth.MultiFactorInfo>} The enrolled factors.\n * @private\n */\nfireauth.MultiFactorUser.extractEnrolledFactors_ = function(resp) {\n  // Parse MFA enrollments.\n  var mfaInfo = resp[fireauth.MultiFactorUser.GET_ACCOUNT_INFO_MFA_INFO_] || [];\n  var enrolledFactors = [];\n  goog.array.forEach(mfaInfo, function(mfaEnrollment) {\n    var info = fireauth.MultiFactorInfo.fromServerResponse(mfaEnrollment);\n    if (info) {\n      enrolledFactors.push(info);\n    }\n  });\n  return enrolledFactors;\n};\n\n\n/**\n * Handles user reload event. This will parse the enrollments from the\n * response and update them on the current multi-factor instance.\n * @param {{userServerResponse: !Object}} event The user reload event.\n * @private\n */\nfireauth.MultiFactorUser.prototype.handleUserReload_ = function(event) {\n  this.updateEnrolledFactors_(fireauth.MultiFactorUser.extractEnrolledFactors_(\n      event.userServerResponse));\n};\n\n\n/**\n * Updates the enrolledFactors property.\n * @param {!Array<!fireauth.MultiFactorInfo>} enrolledFactors The new list of\n *     `MultiFactorInfo` objects on the user.\n * @private\n */\nfireauth.MultiFactorUser.prototype.updateEnrolledFactors_ =\n    function(enrolledFactors) {\n  this.enrolledFactors_ = enrolledFactors;\n  fireauth.object.setReadonlyProperty(\n      this, 'enrolledFactors', enrolledFactors);\n};\n\n\n/**\n * Copies the list of enrolled factors on the user. This facilitates copying a\n * user to another user. The underlying user reference is not updated.\n * @param {!fireauth.MultiFactorUser} multiFactorUser The instance to copy.\n */\nfireauth.MultiFactorUser.prototype.copy = function(multiFactorUser) {\n  this.updateEnrolledFactors_(multiFactorUser.enrolledFactors_);\n};\n\n\n/**\n * Provides a multi-factor session used to start a multi-factor enrollment flow.\n * @return {!goog.Promise<!fireauth.MultiFactorSession>} A promise that resolves\n *     with a multi-factor session.\n */\nfireauth.MultiFactorUser.prototype.getSession = function() {\n  return this.user_.getIdToken()\n      .then(function(idToken) {\n        return new fireauth.MultiFactorSession(idToken, null);\n      });\n};\n\n\n/**\n * Enrolls a second factor as identified by the multi-factor assertion for\n * the current user.\n * @param {!fireauth.MultiFactorAssertion} assertion The multi-factor assertion.\n * @param {?string=} displayName The optional display name used to identify\n *     the 2nd factor to the end user.\n * @return {!goog.Promise<void>} A promise that resolves when the second factor\n *     is enrolled.\n */\nfireauth.MultiFactorUser.prototype.enroll = function(assertion, displayName) {\n  var self = this;\n  var rpcHandler = this.user_.getRpcHandler();\n  return this.getSession().then(function(session) {\n    return assertion.process(rpcHandler, session, displayName);\n  }).then(function(tokenResponse) {\n    // New tokens will be issued after enrollment of the new second factors.\n    // They need to be updated on the user.\n    self.user_.updateTokensIfPresent(tokenResponse);\n    // The user needs to be reloaded to get the new multi-factor information\n    // from server. USER_RELOADED event will be triggered and `enrolledFactors`\n    // will be updated.\n    return self.user_.reload();\n  });\n};\n\n\n/**\n * Removes a second factor from the current user. The factor to be removed can\n * either be identified with the corresponding MultiFactorInfo object or with\n * the second factor's uid string.\n *\n * As part of the unenrollment process, the backend may decide to log the user\n * out. If so, this will still succeed and invalidate the user's state.\n * @param {!fireauth.MultiFactorInfo|string} target The second factor to remove.\n * @return {!goog.Promise<void>}\n */\nfireauth.MultiFactorUser.prototype.unenroll = function(target) {\n  var self = this;\n  var uid = typeof target === 'string' ? target : target['uid'];\n  var rpcHandler = this.user_.getRpcHandler();\n  return this.user_.getIdToken().then(function(idToken) {\n    return rpcHandler.withdrawMfa(idToken, uid);\n  }).then(function(tokenResponse) {\n    // Remove the second factor from the user's list.\n    var enrolledFactors = goog.array.filter(self.enrolledFactors_,\n      function(info) {\n        return info['uid'] != uid;\n      });\n    self.updateEnrolledFactors_(enrolledFactors);\n    // Depending on whether the backend decided to revoke the user's session,\n    // the tokenResponse may be empty. If the tokens were not updated (and they\n    // are now invalid), reloading the user will discover this and invalidate\n    // the user's state accordingly.\n    self.user_.updateTokensIfPresent(tokenResponse);\n    return self.user_.reload().thenCatch(function(error) {\n      if (error['code'] != 'auth/user-token-expired') {\n        throw error;\n      }\n    });\n  });\n};\n\n\n/**\n * @return {!Object} The plain object representation of the `MultiFactorUser`.\n */\nfireauth.MultiFactorUser.prototype.toPlainObject = function() {\n  return {\n    'multiFactor': {\n      'enrolledFactors': goog.array.map(this.enrolledFactors_, function(info) {\n        return info.toPlainObject();\n      })\n    }\n  };\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Utility for proactive refresh with exponential backoff\n * algorithm typically used to define a retry policy for certain async\n * operations.\n */\n\ngoog.provide('fireauth.ProactiveRefresh');\n\ngoog.require('fireauth.util');\ngoog.require('goog.Promise');\ngoog.require('goog.Timer');\n\n\n/**\n * The helper utility used to proactively refresh a certain operation based on\n * certain constraints with an exponential backoff retrial policy when\n * specific recoverable errors occur. Typically this is used to retry an\n * operation on network errors.\n * @param {!function():!goog.Promise} operation The promise returning operation\n *     to run.\n * @param {!function(*):boolean} retryPolicy A function that takes in an error\n *     and returns whether a retry policy should be implemented based on the\n *     error. If not, the operation will not run again.\n * @param {!function():number} getWaitDuration A function that returns the wait\n *     period before running again.\n * @param {number} lowerBound The lower bound duration to wait when an error\n *     occurs. This is the first interval to wait before rerunning after an\n *     error is detected.\n * @param {number} upperBound The upper bound duration to wait when an error\n *     keeps occurring. This upper bound should not be exceeded.\n * @param {boolean=} opt_runInBackground Whether to run in the background, when\n *     the tab is not visible. If the refresh should only run when the app is\n *     visible, the operation will block until the app is visible and then run.\n * @constructor @struct @final\n */\nfireauth.ProactiveRefresh = function(\n    operation,\n    retryPolicy,\n    getWaitDuration,\n    lowerBound,\n    upperBound,\n    opt_runInBackground) {\n  /**\n   * @const @private {!function():!goog.Promise} The promise returning operation\n   *     to run.\n   */\n  this.operation_ = operation;\n  /**\n   * @const @private {!function(*):boolean} The function that takes in an error\n   *     and returns whether a retry policy should be implemented based on the\n   *     error caught.\n   */\n  this.retryPolicy_ = retryPolicy;\n  /**\n   * @const @private {!function():number} The function that returns the wait\n   *     period after a successful operation before running again.\n   */\n  this.getWaitDuration_ = getWaitDuration;\n  /**\n   * @const @private {number} The lower bound duration to wait when an error\n   *     first occurs.\n   */\n  this.lowerBound_ = lowerBound;\n  /**\n   * @const @private {number} The upper bound duration to wait when an error\n   *     keeps occurring. This upper bound should not be exceeded.\n   */\n  this.upperBound_ = upperBound;\n  /**\n   * @const @private {boolean} Whether to run in the background, when the tab is\n   *     not visible.\n   */\n  this.runInBackground_ = !!opt_runInBackground;\n  /**\n   * @private {?goog.Promise} The pending promise for the next operation to run.\n   */\n  this.pending_ = null;\n  /**\n   * @private {number} The first wait interval when a new error occurs.\n   */\n  this.nextErrorWaitInterval_ = this.lowerBound_;\n  // Throw an error if the lower bound is greater than upper bound.\n  if (this.upperBound_ < this.lowerBound_) {\n    throw new Error('Proactive refresh lower bound greater than upper bound!');\n  }\n};\n\n\n/** Starts the proactive refresh based on the current configuration. */\nfireauth.ProactiveRefresh.prototype.start = function() {\n  // Set the next error wait interval to the lower bound. On each consecutive\n  // error, this will double in value until it reaches the upper bound.\n  this.nextErrorWaitInterval_ = this.lowerBound_;\n  // Start proactive refresh with clean slate (successful status).\n  this.process_(true);\n};\n\n\n/**\n * Returns the wait duration before the next run depending on the last run\n * status. If the last operation has succeeded, returns the getWaitDuration()\n * response. Otherwise, doubles the last error wait interval starting from\n * lowerBound and up to upperBound.\n * @param {boolean} hasSucceeded Whether last run succeeded.\n * @return {number} The wait time for the next run.\n * @private\n */\nfireauth.ProactiveRefresh.prototype.getNextRun_ = function(hasSucceeded) {\n  if (hasSucceeded) {\n    // If last operation succeeded, reset next error wait interval and return\n    // the default wait duration.\n    this.nextErrorWaitInterval_ = this.lowerBound_;\n    // Return typical wait duration interval after a successful operation.\n    return this.getWaitDuration_();\n  } else {\n    // Get next error wait interval.\n    var currentErrorWaitInterval = this.nextErrorWaitInterval_;\n    // Double interval for next consecutive error.\n    this.nextErrorWaitInterval_ *= 2;\n    // Make sure next wait interval does not exceed the maximum upper bound.\n    if (this.nextErrorWaitInterval_  > this.upperBound_) {\n      this.nextErrorWaitInterval_  = this.upperBound_;\n    }\n    return currentErrorWaitInterval;\n  }\n};\n\n\n/**\n * Processes one refresh call and sets the timer for the next call based on\n * the last recorded result.\n * @param {boolean} hasSucceeded Whether last run succeeded.\n * @private\n */\nfireauth.ProactiveRefresh.prototype.process_ = function(hasSucceeded) {\n  var self = this;\n  // Stop any other pending operation.\n  this.stop();\n  // Wait for next scheduled run based on whether an error occurred during last\n  // run.\n  this.pending_ = goog.Timer.promise(this.getNextRun_(hasSucceeded))\n      .then(function() {\n        // Block for conditions (if app is required to be visible) to be ready.\n        return self.waitUntilReady_();\n       })\n       .then(function() {\n         // Run the operation.\n         return self.operation_();\n       })\n      .then(function() {\n         // If successful, try again on next cycle with no previous error\n         // passed.\n         self.process_(true);\n       })\n      .thenCatch(function(error) {\n         // If an error occurs, only rerun when the error meets the retry\n         // policy.\n         if (self.retryPolicy_(error)) {\n           // Should retry with error to trigger exponentional backoff.\n           self.process_(false);\n         }\n         // Any other error is considered unrecoverable. Do not try again.\n       });\n};\n\n\n/**\n * Returns a promise which resolves when the current tab is visible.\n * This resolves quickly if refresh is supposed to run in the background too.\n * @return {!goog.Promise} The promise that resolves when the tab is visible or\n *     that requirement is not needed.\n * @private\n */\nfireauth.ProactiveRefresh.prototype.waitUntilReady_ = function() {\n  // Wait until app is in foreground if required.\n  if (this.runInBackground_) {\n    // If runs in background, resolve quickly.\n    return goog.Promise.resolve();\n  } else {\n    // Wait for the app to be visible before resolving the promise.\n    return fireauth.util.onAppVisible();\n  }\n};\n\n\n/** Stops the proactive refresh from running again. */\nfireauth.ProactiveRefresh.prototype.stop = function() {\n  // If there is a pending promise.\n  if (this.pending_) {\n    // Cancel the pending promise and nullify it.\n    this.pending_.cancel();\n    this.pending_ = null;\n  }\n};\n\n\n/** @return {boolean} Whether the proactive refresh is running or not. */\nfireauth.ProactiveRefresh.prototype.isRunning = function() {\n  return !!this.pending_;\n};\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the user info pertaining to an identity provider and\n * the Firebase user object.\n */\n\ngoog.provide('fireauth.AuthUser');\ngoog.provide('fireauth.AuthUser.AccountInfo');\ngoog.provide('fireauth.AuthUserInfo');\ngoog.provide('fireauth.TokenRefreshTime');\ngoog.provide('fireauth.UserMetadata');\n\ngoog.require('fireauth.ActionCodeSettings');\ngoog.require('fireauth.AdditionalUserInfo');\ngoog.require('fireauth.AuthCredential');\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.AuthEvent');\ngoog.require('fireauth.AuthEventHandler');\ngoog.require('fireauth.AuthEventManager');\ngoog.require('fireauth.AuthProvider');\ngoog.require('fireauth.ConfirmationResult');\ngoog.require('fireauth.IdTokenResult');\ngoog.require('fireauth.MultiFactorError');\ngoog.require('fireauth.MultiFactorUser');\ngoog.require('fireauth.PhoneAuthProvider');\ngoog.require('fireauth.ProactiveRefresh');\ngoog.require('fireauth.RpcHandler');\ngoog.require('fireauth.StsTokenManager');\ngoog.require('fireauth.UserEvent');\ngoog.require('fireauth.UserEventType');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.constants');\ngoog.require('fireauth.constants.AuthEventType');\ngoog.require('fireauth.deprecation');\ngoog.require('fireauth.idp');\ngoog.require('fireauth.iframeclient.IfcHandler');\ngoog.require('fireauth.object');\ngoog.require('fireauth.util');\ngoog.require('goog.Promise');\ngoog.require('goog.array');\ngoog.require('goog.events');\ngoog.require('goog.events.Event');\ngoog.require('goog.events.EventTarget');\ngoog.require('goog.object');\n\n\n\n/**\n * Initializes an instance of a user metadata object.\n * @param {?string=} opt_createdAt The optional creation date UTC timestamp.\n * @param {?string=} opt_lastLoginAt The optional last login date UTC timestamp.\n * @constructor\n */\nfireauth.UserMetadata = function(opt_createdAt, opt_lastLoginAt) {\n  /** @private {?string} The created at UTC timestamp. */\n  this.createdAt_ = opt_createdAt || null;\n  /** @private {?string} The last login at UTC timestamp. */\n  this.lastLoginAt_ = opt_lastLoginAt || null;\n  fireauth.object.setReadonlyProperties(this, {\n    'lastSignInTime': fireauth.util.utcTimestampToDateString(\n        opt_lastLoginAt || null),\n    'creationTime': fireauth.util.utcTimestampToDateString(\n        opt_createdAt || null),\n  });\n};\n\n\n/**\n * @return {!fireauth.UserMetadata} A clone of the current user metadata object.\n */\nfireauth.UserMetadata.prototype.clone = function() {\n  return new fireauth.UserMetadata(this.createdAt_, this.lastLoginAt_);\n};\n\n\n/**\n * @return {!Object} The object representation of the user metadata instance.\n */\nfireauth.UserMetadata.prototype.toPlainObject = function() {\n  return {\n    'lastLoginAt': this.lastLoginAt_,\n    'createdAt': this.createdAt_\n  };\n};\n\n\n/**\n * Initializes an instance of the user info for an identity provider.\n * @param {string} uid The user ID.\n * @param {!fireauth.idp.ProviderId} providerId The provider ID.\n * @param {?string=} opt_email The optional user email.\n * @param {?string=} opt_displayName The optional display name.\n * @param {?string=} opt_photoURL The optional photo URL.\n * @param {?string=} opt_phoneNumber The optional phone number.\n * @constructor\n */\nfireauth.AuthUserInfo = function(\n    uid,\n    providerId,\n    opt_email,\n    opt_displayName,\n    opt_photoURL,\n    opt_phoneNumber) {\n  fireauth.object.setReadonlyProperties(this, {\n    'uid': uid,\n    'displayName': opt_displayName || null,\n    'photoURL': opt_photoURL || null,\n    'email': opt_email || null,\n    'phoneNumber': opt_phoneNumber || null,\n    'providerId': providerId\n  });\n};\n\n\n/**\n * Defines the proactive token refresh time constraints in milliseconds.\n * @enum {number}\n */\nfireauth.TokenRefreshTime = {\n  /**\n   * The offset time before token natural expiration to run the refresh.\n   * This is currently 5 minutes.\n   */\n  OFFSET_DURATION: 5 * 60 * 1000,\n  /**\n   * This is the first retrial wait after an error. This is currently\n   * 30 seconds.\n   */\n  RETRIAL_MIN_WAIT: 30 * 1000,\n  /**\n   * This is the maximum retrial wait, currently 16 minutes.\n   */\n  RETRIAL_MAX_WAIT: 16 * 60 * 1000\n};\n\n\n\n/**\n * The Firebase user.\n * @param {!Object} appOptions The application options.\n * @param {!Object} stsTokenResponse The server STS token response.\n * @param {?Object=} opt_accountInfo The optional user account info.\n * @constructor\n * @extends {goog.events.EventTarget}\n * @implements {fireauth.AuthEventHandler}\n */\nfireauth.AuthUser =\n    function(appOptions, stsTokenResponse, opt_accountInfo) {\n  /** @private {!Array<!goog.Promise<*, *>|!goog.Promise<void>>} List of pending\n   *      promises. */\n  this.pendingPromises_ = [];\n  // User is only created via Auth so API key should always be available.\n  /** @private {string} The API key. */\n  this.apiKey_ = /** @type {string} */ (appOptions['apiKey']);\n  // This is needed to associate a user to the corresponding Auth instance.\n  /** @private {string} The App name. */\n  this.appName_ = /** @type {string} */ (appOptions['appName']);\n  /** @private {?string} The Auth domain. */\n  this.authDomain_ = appOptions['authDomain'] || null;\n  var clientFullVersion = firebase.SDK_VERSION ?\n      fireauth.util.getClientVersion(\n          fireauth.util.ClientImplementation.JSCORE, firebase.SDK_VERSION) :\n      null;\n  /** @private {!fireauth.RpcHandler} The RPC handler instance. */\n  this.rpcHandler_ = new fireauth.RpcHandler(\n      this.apiKey_,\n      // Get the client Auth endpoint used.\n      fireauth.constants.getEndpointConfig(fireauth.constants.clientEndpoint),\n    clientFullVersion);\n  if (appOptions['emulatorConfig']) {\n    this.rpcHandler_.updateEmulatorConfig(appOptions['emulatorConfig']);\n  }\n  // TODO: Consider having AuthUser take a fireauth.StsTokenManager\n  // instance instead of a token response but make sure lastAccessToken_ also\n  // initialized at the right time. In this case initializeFromIdTokenResponse\n  // will take in a token response object and convert it to an instance of\n  // fireauth.StsTokenManager to properly initialize user.\n  /** @private {!fireauth.StsTokenManager} The STS token manager instance. */\n  this.stsTokenManager_ = new fireauth.StsTokenManager(this.rpcHandler_);\n\n  this.setLastAccessToken_(\n      stsTokenResponse[fireauth.RpcHandler.AuthServerField.ID_TOKEN]);\n  // STS token manager will always be populated using server response.\n  this.stsTokenManager_.parseServerResponse(stsTokenResponse);\n  fireauth.object.setReadonlyProperty(\n      this, 'refreshToken', this.stsTokenManager_.getRefreshToken());\n  this.setAccountInfo(/** @type {!fireauth.AuthUser.AccountInfo} */ (\n      opt_accountInfo || {}));\n  // Add call to superclass constructor.\n  fireauth.AuthUser.base(this, 'constructor');\n  /** @private {boolean} Whether popup and redirect is enabled on the user. */\n  this.popupRedirectEnabled_ = false;\n  if (this.authDomain_ &&\n      fireauth.AuthEventManager.ENABLED &&\n      // Make sure popup and redirects are supported in the current environment.\n      fireauth.util.isPopupRedirectSupported()) {\n    // Get the Auth event manager associated with this user.\n    this.authEventManager_ = fireauth.AuthEventManager.getManager(\n        this.authDomain_, this.apiKey_, this.appName_);\n  }\n  /** @private {!Array<!function(!fireauth.AuthUser):!goog.Promise>} The list of\n   *      state change listeners. This is needed to make sure state changes are\n   *      resolved before resolving user API promises. For example redirect\n   *      operations should make sure the associated event ID is saved before\n   *      redirecting.\n   */\n  this.stateChangeListeners_ = [];\n  /**\n   * @private {?fireauth.AuthError} The user invalidation error if it exists.\n   */\n  this.userInvalidatedError_ = null;\n  /**\n   * @private {!fireauth.ProactiveRefresh} The reference to the proactive token\n   *     refresher utility for the current user.\n   */\n  this.proactiveRefresh_ = this.initializeProactiveRefreshUtility_();\n  /**\n   * @private {!function(!Object)} The handler for user token changes used to\n   *     realign the proactive token refresh with external token refresh calls.\n   */\n  this.userTokenChangeListener_ = goog.bind(this.handleUserTokenChange_, this);\n  var self = this;\n  /** @private {?string} The current user's language code. */\n  this.languageCode_ = null;\n  /**\n   * @private {function(!goog.events.Event)} The on language code changed event\n   *     handler.\n   */\n  this.onLanguageCodeChanged_ = function(event) {\n    // Update the user language code.\n    self.setLanguageCode(event.languageCode);\n  };\n  /**\n   * @private {?goog.events.EventTarget} The language code change event\n   *     dispatcher.\n   */\n  this.languageCodeChangeEventDispatcher_ = null;\n\n  /**\n   * @private {function(!goog.events.Event)} The on emulator config changed\n   *     event handler.\n   */\n  this.onEmulatorConfigChanged_ = function (event) {\n    // Update the emulator config.\n    self.setEmulatorConfig(event.emulatorConfig);\n  };\n  /**\n   * @private {?goog.events.EventTarget} The emulator code change event\n   *     dispatcher.\n   */\n  this.emulatorConfigChangeEventDispatcher_ = null;\n\n  /** @private {!Array<string>} The current Firebase frameworks. */\n  this.frameworks_ = [];\n  /**\n   * @private {function(!goog.events.Event)} The on framework list changed event\n   *     handler.\n   */\n  this.onFrameworkChanged_ = function(event) {\n    // Update the Firebase frameworks.\n    self.setFramework(event.frameworks);\n  };\n  /**\n   * @private {?goog.events.EventTarget} The framework change event dispatcher.\n   */\n  this.frameworkChangeEventDispatcher_ = null;\n  /**\n   * @const @private {!fireauth.MultiFactorUser} The multifactor user instance.\n   */\n  this.multiFactorUser_ = new fireauth.MultiFactorUser(\n      this, /** @type {?fireauth.AuthUser.AccountInfo|undefined} */ (\n          opt_accountInfo));\n  fireauth.object.setReadonlyProperty(\n      this, 'multiFactor', this.multiFactorUser_);\n};\ngoog.inherits(fireauth.AuthUser, goog.events.EventTarget);\n\n\n/**\n * Updates the user language code.\n * @param {?string} languageCode The current language code to use in user\n *     requests.\n */\nfireauth.AuthUser.prototype.setLanguageCode = function(languageCode) {\n  // Save current language.\n  this.languageCode_ = languageCode;\n  // Update the custom locale header.\n  this.rpcHandler_.updateCustomLocaleHeader(languageCode);\n};\n\n\n/**\n * Updates the emulator config.\n * @param {?fireauth.constants.EmulatorSettings} emulatorConfig The current\n *     emulator config to use in user requests.\n */\nfireauth.AuthUser.prototype.setEmulatorConfig = function(emulatorConfig) {\n  // Update the emulator config.\n  this.rpcHandler_.updateEmulatorConfig(emulatorConfig);\n};\n\n\n/** @return {?string} The current user's language code. */\nfireauth.AuthUser.prototype.getLanguageCode = function() {\n  return this.languageCode_;\n};\n\n\n/**\n * Listens to language code changes triggered by the provided dispatcher.\n * @param {?goog.events.EventTarget} dispatcher The language code changed event\n *     dispatcher.\n */\nfireauth.AuthUser.prototype.setLanguageCodeChangeDispatcher =\n    function(dispatcher) {\n  // Remove any previous listener.\n  if (this.languageCodeChangeEventDispatcher_) {\n    goog.events.unlisten(\n        this.languageCodeChangeEventDispatcher_,\n        fireauth.constants.AuthEventType.LANGUAGE_CODE_CHANGED,\n        this.onLanguageCodeChanged_);\n  }\n  // Update current dispatcher.\n  this.languageCodeChangeEventDispatcher_ = dispatcher;\n  // Using an event listener makes it easy for non-currentUsers to detect\n  // language changes on the parent Auth instance. A developer could still call\n  // APIs that require localization on signed out user references.\n  if (dispatcher) {\n    goog.events.listen(\n        dispatcher,\n        fireauth.constants.AuthEventType.LANGUAGE_CODE_CHANGED,\n        this.onLanguageCodeChanged_);\n  }\n};\n\n\n/**\n  * Listens to emulator config changes triggered by the provided dispatcher.\n  * @param {?goog.events.EventTarget} dispatcher The emulator config changed\n  *     event dispatcher.\n  */\nfireauth.AuthUser.prototype.setEmulatorConfigChangeDispatcher = function(dispatcher) {\n  // Remove any previous listener.\n  if (this.emulatorConfigChangeEventDispatcher_) {\n    goog.events.unlisten(\n      this.emulatorConfigChangeEventDispatcher_,\n      fireauth.constants.AuthEventType.EMULATOR_CONFIG_CHANGED,\n      this.onEmulatorConfigChanged_);\n  }\n  // Update current dispatcher.\n  this.emulatorConfigChangeEventDispatcher_ = dispatcher;\n  // Using an event listener makes it easy for non-currentUsers to detect\n  // emulator changes on the parent Auth instance. A developer could still\n  // call APIs that require emulation on signed out user references.\n  if (dispatcher) {\n    goog.events.listen(\n      dispatcher, fireauth.constants.AuthEventType.EMULATOR_CONFIG_CHANGED,\n      this.onEmulatorConfigChanged_);\n  }\n}\n\n\n/**\n * Updates the Firebase frameworks on the current user.\n * @param {!Array<string>} framework The list of Firebase frameworks.\n */\nfireauth.AuthUser.prototype.setFramework = function(framework) {\n  // Save current frameworks.\n  this.frameworks_ = framework;\n  // Update the client version in RPC handler with the new frameworks.\n  this.rpcHandler_.updateClientVersion(firebase.SDK_VERSION ?\n        fireauth.util.getClientVersion(\n            fireauth.util.ClientImplementation.JSCORE, firebase.SDK_VERSION,\n            this.frameworks_) :\n        null);\n};\n\n\n/** @return {!Array<string>} The current Firebase frameworks. */\nfireauth.AuthUser.prototype.getFramework = function() {\n  return goog.array.clone(this.frameworks_);\n};\n\n\n/**\n * Listens to framework changes triggered by the provided dispatcher.\n * @param {?goog.events.EventTarget} dispatcher The framework changed event\n *     dispatcher.\n */\nfireauth.AuthUser.prototype.setFrameworkChangeDispatcher =\n    function(dispatcher) {\n  // Remove any previous listener.\n  if (this.frameworkChangeEventDispatcher_) {\n    goog.events.unlisten(\n        this.frameworkChangeEventDispatcher_,\n        fireauth.constants.AuthEventType.FRAMEWORK_CHANGED,\n        this.onFrameworkChanged_);\n  }\n  // Update current dispatcher.\n  this.frameworkChangeEventDispatcher_ = dispatcher;\n  // Using an event listener makes it easy for non-currentUsers to detect\n  // framework changes on the parent Auth instance.\n  if (dispatcher) {\n    goog.events.listen(\n        dispatcher,\n        fireauth.constants.AuthEventType.FRAMEWORK_CHANGED,\n        this.onFrameworkChanged_);\n  }\n};\n\n\n/**\n * Handles user token changes. Currently used to realign the proactive token\n * refresh internal timing with successful external token refreshes.\n * @param {!Object} event The token change event.\n * @private\n */\nfireauth.AuthUser.prototype.handleUserTokenChange_ = function(event) {\n  // If an external service refreshes the token, reset the proactive token\n  // refresh utility in case it is still running so the next run time is\n  // up to date.\n  // This will currently also trigger when the proactive refresh succeeds.\n  // This is not ideal but should not have any downsides. It just adds a\n  // redundant reset which can be optimized not to run in the future.\n  if (this.proactiveRefresh_.isRunning()) {\n    this.proactiveRefresh_.stop();\n    this.proactiveRefresh_.start();\n  }\n};\n\n\n/**\n * @return {!fireauth.Auth} The corresponding Auth instance that created the\n *     current user.\n * @private\n */\nfireauth.AuthUser.prototype.getAuth_ = function() {\n  try {\n    // Get the Auth instance for the current app identified by the App name.\n    // This could fail if, for example, the App instance was deleted.\n    return firebase['app'](this.appName_)['auth']();\n  } catch (e) {\n    // Throw appropriate error.\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.INTERNAL_ERROR,\n        'No firebase.auth.Auth instance is available for the Firebase App ' +\n        '\\'' + this.appName_ + '\\'!');\n  }\n};\n\n\n/**\n * @return {string} The user's API key.\n */\nfireauth.AuthUser.prototype.getApiKey = function() {\n  return this.apiKey_;\n};\n\n\n/**\n * Returns the RPC handler of the user.\n * @return {!fireauth.RpcHandler} The RPC handler.\n */\nfireauth.AuthUser.prototype.getRpcHandler = function() {\n  return this.rpcHandler_;\n};\n\n\n/**\n * Used to initialize the current user's proactive token refresher utility.\n * @return {!fireauth.ProactiveRefresh} The user's proactive token refresh\n *     utility.\n * @private\n */\nfireauth.AuthUser.prototype.initializeProactiveRefreshUtility_ = function() {\n  var self = this;\n  return new fireauth.ProactiveRefresh(\n      // Force ID token refresh right before expiration.\n      function() {\n        // Keep in mind when this fails for any reason other than a network\n        // error, it will effectively stop the proactive refresh.\n        return self.getIdToken(true);\n      },\n      // Retry only on network errors.\n      function(error) {\n        if (error && error.code == 'auth/network-request-failed') {\n          return true;\n        }\n        return false;\n      },\n      // Return next time to run with offset applied.\n      function() {\n        // Get time until expiration minus the refresh offset.\n        var waitInterval =\n            self.stsTokenManager_.getExpirationTime() - Date.now() -\n            fireauth.TokenRefreshTime.OFFSET_DURATION;\n        // Set to zero if wait interval is negative.\n        return waitInterval > 0 ? waitInterval : 0;\n      },\n      // Retrial minimum wait.\n      fireauth.TokenRefreshTime.RETRIAL_MIN_WAIT,\n      // Retrial maximum wait.\n      fireauth.TokenRefreshTime.RETRIAL_MAX_WAIT,\n      // Do not run in background as it is common to have multiple tabs open\n      // in a browser and this could increase QPS on server.\n      false);\n};\n\n\n/** Starts token proactive refresh. */\nfireauth.AuthUser.prototype.startProactiveRefresh = function() {\n  // Only allow if not destroyed and not already started.\n  if (!this.destroyed_ && !this.proactiveRefresh_.isRunning()) {\n    this.proactiveRefresh_.start();\n    // Unlisten any previous token change listener.\n    goog.events.unlisten(\n        this,\n        fireauth.UserEventType.TOKEN_CHANGED,\n        this.userTokenChangeListener_);\n    // Listen to token changes to reset the token refresher.\n    goog.events.listen(\n        this,\n        fireauth.UserEventType.TOKEN_CHANGED,\n        this.userTokenChangeListener_);\n  }\n};\n\n\n/** Stops token proactive refresh. */\nfireauth.AuthUser.prototype.stopProactiveRefresh = function() {\n  // Remove internal token change listener.\n  goog.events.unlisten(\n      this,\n      fireauth.UserEventType.TOKEN_CHANGED,\n      this.userTokenChangeListener_);\n  // Stop proactive token refresh.\n  this.proactiveRefresh_.stop();\n};\n\n\n/**\n * Sets latest access token for the AuthUser object.\n * @param {string} lastAccessToken\n * @private\n */\nfireauth.AuthUser.prototype.setLastAccessToken_ = function(lastAccessToken) {\n  /** @private {?string} Latest access token. */\n  this.lastAccessToken_ = lastAccessToken;\n  fireauth.object.setReadonlyProperty(this, '_lat', lastAccessToken);\n};\n\n\n/**\n * @param {function(!fireauth.AuthUser):!goog.Promise} listener The listener\n *     to state changes to add.\n */\nfireauth.AuthUser.prototype.addStateChangeListener = function(listener) {\n  this.stateChangeListeners_.push(listener);\n};\n\n\n/**\n * @param {function(!fireauth.AuthUser):!goog.Promise} listener The listener\n *     to state changes to remove.\n */\nfireauth.AuthUser.prototype.removeStateChangeListener = function(listener) {\n  goog.array.removeAllIf(this.stateChangeListeners_, function(ele) {\n    return ele == listener;\n  });\n};\n\n\n/**\n * Executes all state change listener promises and when all fulfilled, resolves\n * with the current user.\n * @return {!goog.Promise} A promise that resolves when all state listeners\n *     fulfilled.\n * @private\n */\nfireauth.AuthUser.prototype.notifyStateChangeListeners_ = function() {\n  var promises = [];\n  var self = this;\n  for (var i = 0; i < this.stateChangeListeners_.length; i++) {\n    // Run listener with Auth user instance and add to list of promises.\n    promises.push(this.stateChangeListeners_[i](this));\n  }\n  return goog.Promise.allSettled(promises).then(function(results) {\n    // State change errors should be recoverable even if errors occur.\n    return self;\n  });\n};\n\n\n/**\n * Sets the user current pending popup event ID.\n * @param {string} eventId The pending popup event ID.\n */\nfireauth.AuthUser.prototype.setPopupEventId = function(eventId) {\n  // Saving a popup event in a separate property other than redirectEventId\n  // would prevent a pending redirect event from being overwritten by a newly\n  // called popup operation.\n  this.popupEventId_ = eventId;\n};\n\n\n/**\n * @return {?string} The pending popup event ID.\n */\nfireauth.AuthUser.prototype.getPopupEventId = function() {\n  return this.popupEventId_ || null;\n};\n\n\n/**\n * Sets the user current pending redirect event ID.\n * @param {string} eventId The pending redirect event ID.\n */\nfireauth.AuthUser.prototype.setRedirectEventId = function(eventId) {\n  this.redirectEventId_ = eventId;\n};\n\n\n/**\n * @return {?string} The pending redirect event ID.\n */\nfireauth.AuthUser.prototype.getRedirectEventId = function() {\n  return this.redirectEventId_ || null;\n};\n\n\n/**\n * Subscribes to Auth event manager to handle popup and redirect events.\n * This is an explicit operation as users could exist in temporary states. For\n * example a user change could be detected in another tab. When syncing to those\n * changes, a temporary user is retrieved from storage and then copied to\n * existing user. The temporary user should not subscribe to Auth event changes.\n */\nfireauth.AuthUser.prototype.enablePopupRedirect = function() {\n  // Subscribe to Auth event manager if available.\n  if (this.authEventManager_ && !this.popupRedirectEnabled_) {\n    this.popupRedirectEnabled_ = true;\n    this.authEventManager_.subscribe(this);\n  }\n};\n\n\n/**\n * getAccountInfo users field.\n * @const {string}\n */\nfireauth.AuthUser.GET_ACCOUNT_INFO_USERS = 'users';\n\n\n/**\n * getAccountInfo response user fields.\n * @enum {string}\n */\nfireauth.AuthUser.GetAccountInfoField = {\n  CREATED_AT: 'createdAt',\n  DISPLAY_NAME: 'displayName',\n  EMAIL: 'email',\n  EMAIL_VERIFIED: 'emailVerified',\n  LAST_LOGIN_AT: 'lastLoginAt',\n  LOCAL_ID: 'localId',\n  PASSWORD_HASH: 'passwordHash',\n  PASSWORD_UPDATED_AT: 'passwordUpdatedAt',\n  PHONE_NUMBER: 'phoneNumber',\n  PHOTO_URL: 'photoUrl',\n  PROVIDER_USER_INFO: 'providerUserInfo',\n  TENANT_ID: 'tenantId'\n};\n\n\n/**\n * setAccountInfo response user fields.\n * @enum {string}\n */\nfireauth.AuthUser.SetAccountInfoField = {\n  DISPLAY_NAME: 'displayName',\n  EMAIL: 'email',\n  PHOTO_URL: 'photoUrl',\n  PROVIDER_ID: 'providerId',\n  PROVIDER_USER_INFO: 'providerUserInfo'\n};\n\n\n/**\n * getAccountInfo response provider user info fields.\n * @enum {string}\n */\nfireauth.AuthUser.GetAccountInfoProviderField = {\n  DISPLAY_NAME: 'displayName',\n  EMAIL: 'email',\n  PHOTO_URL: 'photoUrl',\n  PHONE_NUMBER: 'phoneNumber',\n  PROVIDER_ID: 'providerId',\n  RAW_ID: 'rawId'\n};\n\n\n/**\n * verifyAssertion response fields.\n * @enum {string}\n */\nfireauth.AuthUser.VerifyAssertionField = {\n  ID_TOKEN: 'idToken',\n  PROVIDER_ID: 'providerId'\n};\n\n\n/** @return {!fireauth.StsTokenManager} The STS token manager instance */\nfireauth.AuthUser.prototype.getStsTokenManager = function() {\n  return this.stsTokenManager_;\n};\n\n\n/**\n * Sets the user account info.\n * @param {!fireauth.AuthUser.AccountInfo} accountInfo The account information\n *     from the default provider.\n */\nfireauth.AuthUser.prototype.setAccountInfo = function(accountInfo) {\n  fireauth.object.setReadonlyProperties(this, {\n    'uid': accountInfo['uid'],\n    'displayName': accountInfo['displayName'] || null,\n    'photoURL': accountInfo['photoURL'] || null,\n    'email': accountInfo['email'] || null,\n    'emailVerified': accountInfo['emailVerified'] || false,\n    'phoneNumber': accountInfo['phoneNumber'] || null,\n    'isAnonymous': accountInfo['isAnonymous'] || false,\n    'tenantId': accountInfo['tenantId'] || null,\n    'metadata': new fireauth.UserMetadata(\n        accountInfo['createdAt'], accountInfo['lastLoginAt']),\n    'providerData': []\n  });\n  // Sets the tenant ID on RPC handler. For requests with ID tokens, the source\n  // of truth is the tenant ID in the ID token. If the request body has a\n  // tenant ID (optional here), the backend will confirm it matches the\n  // tenant ID in the ID token, otherwise throw an error. If no tenant ID is\n  // passed in the request, it will be determined from the ID token.\n  this.rpcHandler_.updateTenantId(this['tenantId']);\n};\n\n\n/**\n * Type specifying the parameters that can be passed to the\n * {@code fireauth.AuthUser} constructor.\n * @typedef {{\n *   uid: (?string|undefined),\n *   displayName: (?string|undefined),\n *   photoURL: (?string|undefined),\n *   email: (?string|undefined),\n *   emailVerified: ?boolean,\n *   phoneNumber: (?string|undefined),\n *   isAnonymous: ?boolean,\n *   createdAt: (?string|undefined),\n *   lastLoginAt: (?string|undefined),\n *   tenantId: (?string|undefined),\n *   multiFactor: ({\n *     enrolledFactors: (?Array<!fireauth.MultiFactorInfo>|undefined)\n *   }|undefined)\n * }}\n */\nfireauth.AuthUser.AccountInfo;\n\n\n/**\n * The provider for all fireauth.AuthUser objects is 'firebase'.\n */\nfireauth.object.setReadonlyProperty(fireauth.AuthUser.prototype, 'providerId',\n    fireauth.idp.ProviderId.FIREBASE);\n\n\n/**\n * Returns nothing. This can be used to consume the output of a Promise.\n * @private\n */\nfireauth.AuthUser.returnNothing_ = function() {\n  // Return nothing. Intentionally left empty.\n};\n\n\n/**\n * Ensures the user is still logged in before moving to the next promise\n * resolution.\n * @return {!goog.Promise<undefined,undefined>}\n * @private\n */\nfireauth.AuthUser.prototype.checkDestroyed_ = function() {\n  var self = this;\n  return goog.Promise.resolve().then(function() {\n    if (self.destroyed_) {\n      throw new fireauth.AuthError(fireauth.authenum.Error.MODULE_DESTROYED);\n    }\n  });\n};\n\n\n/**\n * @return {!Array<!fireauth.idp.ProviderId>} The list of provider IDs.\n */\nfireauth.AuthUser.prototype.getProviderIds = function() {\n  return goog.array.map(this['providerData'], function(userInfo) {\n    return userInfo['providerId'];\n  });\n};\n\n\n/**\n * Adds the provided user info to list of providers' data.\n * @param {?fireauth.AuthUserInfo} providerData Provider data to store for user.\n */\nfireauth.AuthUser.prototype.addProviderData = function(providerData) {\n  if (!providerData) {\n    return;\n  }\n  this.removeProviderData(providerData['providerId']);\n  this['providerData'].push(providerData);\n};\n\n\n/**\n * @param {!fireauth.idp.ProviderId} providerId The provider ID whose\n *     data should be removed.\n */\nfireauth.AuthUser.prototype.removeProviderData = function(providerId) {\n  goog.array.removeAllIf(this['providerData'], function(userInfo) {\n    return userInfo['providerId'] == providerId;\n  });\n};\n\n\n/**\n * @param {string} propName The property name to modify.\n * @param {?string|boolean} value The new value to set.\n */\nfireauth.AuthUser.prototype.updateProperty = function(propName, value) {\n  // User ID is required.\n  if (propName == 'uid' && !value) {\n    return;\n  }\n  if (this.hasOwnProperty(propName)) {\n    fireauth.object.setReadonlyProperty(this, propName, value);\n  }\n};\n\n\n/**\n * @param {!fireauth.AuthUser} otherUser The other user to compare to.\n * @return {boolean} True if both User objects have the same user ID.\n */\nfireauth.AuthUser.prototype.hasSameUserIdAs = function(otherUser) {\n  var thisId = this['uid'];\n  var thatId = otherUser['uid'];\n  if (thisId === undefined || thisId === null || thisId === '' ||\n      thatId === undefined || thatId === null || thatId === '') {\n    return false;\n  }\n  return thisId == thatId;\n};\n\n\n/**\n * Copies all properties and STS token manager instance from userToCopy to\n * current user without triggering any Auth state change or token change\n * listener.\n * @param {!fireauth.AuthUser} userToCopy The updated user to overwrite current\n *     user.\n */\nfireauth.AuthUser.prototype.copy = function(userToCopy) {\n  var self = this;\n  // Copy to self.\n  if (self == userToCopy) {\n    return;\n  }\n  fireauth.object.setReadonlyProperties(this, {\n    'uid': userToCopy['uid'],\n    'displayName': userToCopy['displayName'],\n    'photoURL': userToCopy['photoURL'],\n    'email': userToCopy['email'],\n    'emailVerified': userToCopy['emailVerified'],\n    'phoneNumber': userToCopy['phoneNumber'],\n    'isAnonymous': userToCopy['isAnonymous'],\n    'tenantId': userToCopy['tenantId'],\n    'providerData': []\n  });\n  // This should always be available but just in case there is a conflict with\n  // a user from an older version.\n  if (userToCopy['metadata']) {\n    fireauth.object.setReadonlyProperty(\n        this,\n        'metadata',\n        /** @type{!fireauth.UserMetadata} */ (userToCopy['metadata']).clone());\n  } else {\n    // User to copy has no metadata. Align with that.\n    fireauth.object.setReadonlyProperty(\n        this, 'metadata', new fireauth.UserMetadata());\n  }\n  goog.array.forEach(userToCopy['providerData'], function(userInfo) {\n    self.addProviderData(userInfo);\n  });\n  this.stsTokenManager_.copy(userToCopy.getStsTokenManager());\n  fireauth.object.setReadonlyProperty(\n      this, 'refreshToken', this.stsTokenManager_.getRefreshToken());\n  // Copy multi-factor info to current user.\n  // This should be backward compatible.\n  // If the userToCopy is loaded from an older version, multiFactorUser\n  // enrolled factors will be initialized empty and copied empty to current\n  // multiFactorUser.\n  this.multiFactorUser_.copy(userToCopy.multiFactorUser_);\n};\n\n\n/**\n * Set the Auth user redirect storage manager.\n * @param {?fireauth.storage.RedirectUserManager} redirectStorageManager The\n *     utility used to store or delete the user on redirect.\n */\nfireauth.AuthUser.prototype.setRedirectStorageManager =\n    function(redirectStorageManager) {\n  /**\n   * @private {?fireauth.storage.RedirectUserManager} The redirect user storage\n   *     manager.\n   */\n  this.redirectStorageManager_ = redirectStorageManager;\n};\n\n\n/**\n * Refreshes the current user, if signed in.\n * @return {!goog.Promise<void>}\n */\nfireauth.AuthUser.prototype.reload = function() {\n  var self = this;\n  // Register this pending promise. This will also check for user invalidation.\n  return this.registerPendingPromise_(this.checkDestroyed_().then(function() {\n    return self.reloadWithoutSaving_()\n        .then(function() {\n          return self.notifyStateChangeListeners_();\n        })\n        .then(fireauth.AuthUser.returnNothing_);\n  }));\n};\n\n\n/**\n * Refreshes the current user, if signed in.\n * @return {!goog.Promise<string>} Promise that resolves with the idToken.\n * @private\n */\nfireauth.AuthUser.prototype.reloadWithoutSaving_ = function() {\n  var self = this;\n  // ID token is required to refresh the user's data.\n  // If this is called after invalidation, getToken will throw the cached error.\n  return this.getIdToken().then(function(idToken) {\n    var isAnonymous = self['isAnonymous'];\n    return self.setUserAccountInfoFromToken_(idToken)\n        .then(function(user) {\n          if (!isAnonymous) {\n            // Preserves the not anonymous status of the stored user,\n            // even if no more credentials (federated or email/password)\n            // linked to the user.\n            self.updateProperty('isAnonymous', false);\n          }\n          return idToken;\n        });\n  });\n};\n\n\n/**\n * This operation resolves with the Firebase ID token result which contains\n * the entire payload claims.\n * @param {boolean=} opt_forceRefresh Whether to force refresh token exchange.\n * @return {!goog.Promise<!fireauth.IdTokenResult>} A Promise that resolves with\n *     the ID token result.\n */\nfireauth.AuthUser.prototype.getIdTokenResult = function(opt_forceRefresh) {\n  return this.getIdToken(opt_forceRefresh).then(function(idToken) {\n    return new fireauth.IdTokenResult(idToken);\n  });\n};\n\n\n/**\n * This operation resolves with the Firebase ID token.\n * @param {boolean=} opt_forceRefresh Whether to force refresh token exchange.\n * @return {!goog.Promise<string>} A Promise that resolves with the ID token.\n */\nfireauth.AuthUser.prototype.getIdToken = function(opt_forceRefresh) {\n  var self = this;\n  // Register this pending promise. This will also check for user invalidation.\n  return this.registerPendingPromise_(this.checkDestroyed_().then(function() {\n    return self.stsTokenManager_.getToken(opt_forceRefresh);\n  }).then(function(response) {\n    if (!response) {\n      // If the user exists, the token manager should be initialized.\n      throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n    }\n    // Only if the access token is refreshed, notify Auth listeners.\n    if (response['accessToken'] != self.lastAccessToken_) {\n      self.setLastAccessToken_(response['accessToken']);\n      // Auth state change, notify listeners.\n      self.notifyAuthListeners_();\n    }\n    self.updateProperty('refreshToken', response['refreshToken']);\n    return response['accessToken'];\n  }));\n};\n\n\n/**\n * Checks if the error corresponds to a user invalidation action.\n * @param {*} error The error returned by a user operation.\n * @return {boolean} Whether the user is invalidated based on the error\n *     provided.\n * @private\n */\nfireauth.AuthUser.isUserInvalidated_ = function(error) {\n  return !!(error &&\n      (error.code == 'auth/user-disabled' ||\n       error.code == 'auth/user-token-expired'));\n};\n\n\n/**\n * Updates the current tokens using a server response, if new tokens are\n * present and are different from the current ones, and notify the Auth\n * listeners.\n * @param {!Object} response The response from the server.\n */\nfireauth.AuthUser.prototype.updateTokensIfPresent = function(response) {\n  if (response[fireauth.RpcHandler.AuthServerField.ID_TOKEN] &&\n      this.lastAccessToken_ != response[\n          fireauth.RpcHandler.AuthServerField.ID_TOKEN]) {\n    this.stsTokenManager_.parseServerResponse(response);\n    this.notifyAuthListeners_();\n    this.setLastAccessToken_(response[\n        fireauth.RpcHandler.AuthServerField.ID_TOKEN]);\n    // Update refresh token property.\n    this.updateProperty(\n        'refreshToken', this.stsTokenManager_.getRefreshToken());\n  }\n};\n\n\n/**\n * Called internally on Auth (access token) changes to notify listeners.\n * @private\n */\nfireauth.AuthUser.prototype.notifyAuthListeners_ = function() {\n  this.dispatchEvent(\n      new fireauth.UserEvent(fireauth.UserEventType.TOKEN_CHANGED));\n};\n\n\n/**\n * Called internally on user deletion to notify listeners.\n * @private\n */\nfireauth.AuthUser.prototype.notifyUserDeletedListeners_ = function() {\n  this.dispatchEvent(\n      new fireauth.UserEvent(fireauth.UserEventType.USER_DELETED));\n};\n\n\n/**\n * Called internally on user session invalidation to notify listeners.\n * @private\n */\nfireauth.AuthUser.prototype.notifyUserInvalidatedListeners_ = function() {\n  this.dispatchEvent(\n      new fireauth.UserEvent(fireauth.UserEventType.USER_INVALIDATED));\n};\n\n\n/**\n * Queries the backend using the provided ID token for all linked accounts to\n * build the Firebase user object.\n * @param {string} idToken The ID token string.\n * @return {!goog.Promise<undefined>}\n * @private\n */\nfireauth.AuthUser.prototype.setUserAccountInfoFromToken_ = function (idToken) {\n  return this.rpcHandler_.getAccountInfoByIdToken(idToken)\n      .then(goog.bind(this.parseAccountInfo_, this));\n};\n\n\n/**\n * Parses the response from the getAccountInfo endpoint.\n * @param {!Object} resp The backend response.\n * @private\n */\nfireauth.AuthUser.prototype.parseAccountInfo_ = function(resp) {\n  var users = resp[fireauth.AuthUser.GET_ACCOUNT_INFO_USERS];\n  if (!users || !users.length) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n  var user = users[0];\n  var accountInfo = /** @type {!fireauth.AuthUser.AccountInfo} */ ({\n    'uid': /** @type {string} */ (\n        user[fireauth.AuthUser.GetAccountInfoField.LOCAL_ID]),\n    'displayName': /** @type {?string|undefined} */ (\n        user[fireauth.AuthUser.GetAccountInfoField.DISPLAY_NAME]),\n    'photoURL': /** @type {?string|undefined} */ (\n        user[fireauth.AuthUser.GetAccountInfoField.PHOTO_URL]),\n    'email': /** @type {?string|undefined} */ (\n        user[fireauth.AuthUser.GetAccountInfoField.EMAIL]),\n    'emailVerified':\n        !!user[fireauth.AuthUser.GetAccountInfoField.EMAIL_VERIFIED],\n    'phoneNumber': /** @type {?string|undefined} */ (\n        user[fireauth.AuthUser.GetAccountInfoField.PHONE_NUMBER]),\n    'lastLoginAt': /** @type {?string|undefined} */ (\n        user[fireauth.AuthUser.GetAccountInfoField.LAST_LOGIN_AT]),\n    'createdAt': /** @type {?string|undefined} */ (\n        user[fireauth.AuthUser.GetAccountInfoField.CREATED_AT]),\n    'tenantId': /** @type {?string|undefined} */ (\n        user[fireauth.AuthUser.GetAccountInfoField.TENANT_ID])\n  });\n  this.setAccountInfo(accountInfo);\n  var linkedAccounts = this.extractLinkedAccounts_(user);\n  for (var i = 0; i < linkedAccounts.length; i++) {\n    this.addProviderData(linkedAccounts[i]);\n  }\n  // Sets the isAnonymous flag based on email, passwordHash and providerData.\n  var isAnonymous = !(this['email'] &&\n      user[fireauth.AuthUser.GetAccountInfoField.PASSWORD_HASH]) &&\n      !(this['providerData'] && this['providerData'].length);\n  this.updateProperty('isAnonymous', isAnonymous);\n  // Notify external listeners of the reload.\n  this.dispatchEvent(new fireauth.UserEvent(\n      fireauth.UserEventType.USER_RELOADED,\n      {userServerResponse: user}));\n};\n\n\n/**\n * Extracts the linked accounts from getAccountInfo response and returns an\n * array of corresponding provider data.\n * @param {!Object} resp The response object.\n * @return {!Array<!fireauth.AuthUserInfo>} The linked accounts.\n * @private\n */\nfireauth.AuthUser.prototype.extractLinkedAccounts_ = function(resp) {\n  var providerInfo =\n      resp[fireauth.AuthUser.GetAccountInfoField.PROVIDER_USER_INFO];\n  if (!providerInfo || !providerInfo.length) {\n    return [];\n  }\n\n  return goog.array.map(providerInfo, function(info) {\n    return new fireauth.AuthUserInfo(\n        info[fireauth.AuthUser.GetAccountInfoProviderField.RAW_ID],\n        info[fireauth.AuthUser.GetAccountInfoProviderField.PROVIDER_ID],\n        info[fireauth.AuthUser.GetAccountInfoProviderField.EMAIL],\n        info[fireauth.AuthUser.GetAccountInfoProviderField.DISPLAY_NAME],\n        info[fireauth.AuthUser.GetAccountInfoProviderField.PHOTO_URL],\n        info[fireauth.AuthUser.GetAccountInfoProviderField.PHONE_NUMBER]);\n  });\n};\n\n\n/**\n * Reauthenticates a user using a fresh credential, to be used before operations\n * such as updatePassword that require tokens from recent login attempts. It\n * also returns any additional user info data or credentials returned form the\n * backend. It has been deprecated in favor of reauthenticateWithCredential.\n * @param {!fireauth.AuthCredential} credential\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.AuthUser.prototype.reauthenticateAndRetrieveDataWithCredential =\n    function(credential) {\n  fireauth.deprecation.log(\n      fireauth.deprecation.Deprecations.REAUTH_WITH_CREDENTIAL);\n  return this.reauthenticateWithCredential(credential);\n};\n\n\n/**\n * Reauthenticates a user using a fresh credential, to be used before operations\n * such as updatePassword that require tokens from recent login attempts. It\n * also returns any additional user info data or credentials returned form the\n * backend.\n * @param {!fireauth.AuthCredential} credential\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.AuthUser.prototype.reauthenticateWithCredential =\n    function(credential) {\n  var self = this;\n  var userCredential = null;\n  // Register this pending promise but bypass user invalidation check.\n  return this.registerPendingPromise_(\n      // Match ID token from credential with the current user UID.\n      credential.matchIdTokenWithUid(this.rpcHandler_, this['uid'])\n      .then(function(response) {\n        // If the credential is valid and matches the current user ID, then\n        // update the tokens accordingly.\n        self.updateTokensIfPresent(response);\n        // Get user credential.\n        userCredential = self.getUserCredential_(\n            response, fireauth.constants.OperationType.REAUTHENTICATE);\n        // This could potentially validate an invalidated user. This happens in\n        // the case a password reset was applied. The refresh token is expired.\n        // Reauthentication should revalidate the user.\n        // User would remain non current if already signed out, but should be\n        // enabled again.\n        self.userInvalidatedError_ = null;\n        return self.reload();\n      }).then(function() {\n        // Return user credential after reauthenticated user is reloaded.\n        return userCredential;\n      }),\n      // Skip invalidation check as reauthentication could revalidate a user.\n      true);\n};\n\n\n/**\n * Reloads the user and then checks if a provider is already linked. If so,\n * this returns a Promise that rejects. Note that state change listeners are not\n * notified on success, so that operations using this can make changes and then\n * do one final listener notification.\n * @param {string} providerId\n * @return {!goog.Promise<void>}\n * @private\n */\nfireauth.AuthUser.prototype.checkIfAlreadyLinked_ =\n    function(providerId) {\n  var self = this;\n  // Reload first in case the user was updated elsewhere.\n  return this.reloadWithoutSaving_()\n      .then(function() {\n        if (goog.array.contains(self.getProviderIds(), providerId)) {\n          return self.notifyStateChangeListeners_()\n              .then(function() {\n                  throw new fireauth.AuthError(\n                      fireauth.authenum.Error.PROVIDER_ALREADY_LINKED);\n              });\n        }\n      });\n};\n\n\n/**\n * Links a provider to the current user and returns any additional user info\n * data or credentials returned form the backend. It has been deprecated in\n * favor of linkWithCredential.\n * @param {!fireauth.AuthCredential} credential The credential from the Auth\n *     provider.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.AuthUser.prototype.linkAndRetrieveDataWithCredential =\n    function(credential) {\n  fireauth.deprecation.log(\n      fireauth.deprecation.Deprecations.LINK_WITH_CREDENTIAL);\n  return this.linkWithCredential(credential);\n};\n\n\n/**\n * Links a provider to the current user and returns any additional user info\n * data or credentials returned form the backend.\n * @param {!fireauth.AuthCredential} credential The credential from the Auth\n *     provider.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.AuthUser.prototype.linkWithCredential = function(credential) {\n  var self = this;\n  var userCredential = null;\n  // Register this pending promise. This will also check for user invalidation.\n  return this.registerPendingPromise_(\n      this.checkIfAlreadyLinked_(credential['providerId'])\n      .then(function() {\n        return self.getIdToken();\n      })\n      .then(function(idToken) {\n        return credential.linkToIdToken(self.rpcHandler_, idToken);\n      })\n      .then(function(response) {\n        // Get user credential.\n        userCredential = self.getUserCredential_(\n            response, fireauth.constants.OperationType.LINK);\n        // Finalize linking.\n        return self.finalizeLinking_(response);\n      })\n      .then(function(user) {\n        // Return user credential after finalizing linking.\n        return userCredential;\n      })\n  );\n};\n\n\n/**\n * Links a phone number using the App verifier instance and returns a\n * promise that resolves with the confirmation result which on confirmation\n * will resolve with the UserCredential object.\n * @param {string} phoneNumber The phone number to authenticate with.\n * @param {!firebase.auth.ApplicationVerifier} appVerifier The application\n *     verifier.\n * @return {!goog.Promise<!fireauth.ConfirmationResult>}\n */\nfireauth.AuthUser.prototype.linkWithPhoneNumber =\n    function(phoneNumber, appVerifier) {\n  var self = this;\n  return /** @type {!goog.Promise<!fireauth.ConfirmationResult>} */ (\n      this.registerPendingPromise_(\n          // Check if linked already. If so, throw an error.\n          // This is redundant but is needed to prevent the need to send the\n          // SMS (worth the cost).\n          this.checkIfAlreadyLinked_(fireauth.idp.ProviderId.PHONE)\n              .then(function() {\n                return fireauth.ConfirmationResult.initialize(\n                    self.getAuth_(),\n                    phoneNumber,\n                    appVerifier,\n                    // This will check again if the credential is linked.\n                    goog.bind(self.linkWithCredential, self));\n              })));\n};\n\n\n/**\n * Reauthenticates a user with a phone number using the App verifier instance\n * and returns a promise that resolves with the confirmation result which on\n * confirmation will resolve with the UserCredential object.\n * @param {string} phoneNumber The phone number to authenticate with.\n * @param {!firebase.auth.ApplicationVerifier} appVerifier The application\n *     verifier.\n * @return {!goog.Promise<!fireauth.ConfirmationResult>}\n */\nfireauth.AuthUser.prototype.reauthenticateWithPhoneNumber =\n    function(phoneNumber, appVerifier) {\n  var self = this;\n  return /** @type {!goog.Promise<!fireauth.ConfirmationResult>} */ (\n      this.registerPendingPromise_(\n          // Wrap this operation in a Promise since self.getAuth_() may throw an\n          // error synchronously.\n          goog.Promise.resolve().then(function() {\n            return fireauth.ConfirmationResult.initialize(\n                // Get corresponding Auth instance.\n                self.getAuth_(),\n                phoneNumber,\n                appVerifier,\n                goog.bind(self.reauthenticateWithCredential,\n                    self));\n          }),\n          // Skip invalidation check as reauthentication could revalidate a\n          // user.\n          true));\n};\n\n\n/**\n * Converts an ID token response (eg. verifyAssertion) to a UserCredential\n * object.\n * @param {!Object} idTokenResponse The ID token response.\n * @param {!fireauth.constants.OperationType} operationType The operation type\n *     to set in the user credential.\n * @return {!fireauth.AuthEventManager.Result} The UserCredential object\n *     constructed from the response.\n * @private\n */\nfireauth.AuthUser.prototype.getUserCredential_ =\n    function(idTokenResponse, operationType) {\n  // Get credential if available in the response.\n  var credential = fireauth.AuthProvider.getCredentialFromResponse(\n      idTokenResponse);\n  // Get additional user info data if available in the response.\n  var additionalUserInfo = fireauth.AdditionalUserInfo.fromPlainObject(\n      idTokenResponse);\n  // Return the readonly copy of the user credential object.\n  return fireauth.object.makeReadonlyCopy({\n    // Return the current user reference.\n    'user': this,\n    // Return any credential passed from the backend.\n    'credential': credential,\n    // Return any additional IdP data passed from the backend.\n    'additionalUserInfo': additionalUserInfo,\n    // Return the operation type in the user credential object.\n    'operationType': operationType\n  });\n};\n\n\n/**\n * Finalizes a linking flow, updating idToken and user's data using the\n * RPC linking response.\n * @param {!Object} response The RPC linking response.\n * @return {!goog.Promise<!fireauth.AuthUser>}\n * @private\n */\nfireauth.AuthUser.prototype.finalizeLinking_ = function(response) {\n  // The response may contain a new access token,\n  // so we should update them just like a new sign in.\n  this.updateTokensIfPresent(response);\n  // This will take care of saving the updated state.\n  var self = this;\n  return this.reload().then(function() {\n    return self;\n  });\n};\n\n\n/**\n * Updates the user's email.\n * @param {string} newEmail The new email.\n * @return {!goog.Promise<void>}\n */\nfireauth.AuthUser.prototype.updateEmail = function(newEmail) {\n  var self = this;\n  // Register this pending promise. This will also check for user invalidation.\n  return this.registerPendingPromise_(this.getIdToken()\n      .then(function(idToken) {\n        return self.rpcHandler_.updateEmail(idToken, newEmail);\n      })\n      .then(function(response) {\n        // Calls to SetAccountInfo may invalidate old tokens.\n        self.updateTokensIfPresent(response);\n        // Reloads the user to update emailVerified.\n        return self.reload();\n      }));\n};\n\n\n/**\n * Updates the user's phone number.\n * @param {!fireauth.PhoneAuthCredential} phoneCredential\n * @return {!goog.Promise<void>}\n */\nfireauth.AuthUser.prototype.updatePhoneNumber = function(phoneCredential) {\n  var self = this;\n  return this.registerPendingPromise_(this.getIdToken()\n      .then(function(idToken) {\n        // The backend always overwrites the existing phone number during a\n        // link operation.\n        return phoneCredential.linkToIdToken(self.rpcHandler_, idToken);\n      })\n      .then(function(response) {\n        self.updateTokensIfPresent(response);\n        return self.reload();\n      }));\n};\n\n\n/**\n * Updates the user's password.\n * @param {string} newPassword The new password.\n * @return {!goog.Promise<void>}\n */\nfireauth.AuthUser.prototype.updatePassword = function(newPassword) {\n  var self = this;\n  // Register this pending promise. This will also check for user invalidation.\n  return this.registerPendingPromise_(\n      this.getIdToken()\n      .then(function(idToken) {\n        return self.rpcHandler_.updatePassword(idToken, newPassword);\n      })\n      .then(function(response) {\n        self.updateTokensIfPresent(response);\n        // Reloads the user in case email has also been updated and the user\n        // was anonymous.\n        return self.reload();\n      }));\n};\n\n\n/**\n * Updates the user's profile data.\n * @param {!Object} profile The profile data to update.\n * @return {!goog.Promise<undefined>}\n */\nfireauth.AuthUser.prototype.updateProfile = function(profile) {\n  if (profile['displayName'] === undefined &&\n      profile['photoURL'] === undefined) {\n    // No change, directly return.\n    return this.checkDestroyed_();\n  }\n  var self = this;\n  // Register this pending promise. This will also check for user invalidation.\n  return this.registerPendingPromise_(\n      this.getIdToken().then(function(idToken) {\n        // Translate the request into one that the backend accepts.\n        var profileRequest = {\n          'displayName': profile['displayName'],\n          'photoUrl': profile['photoURL']\n        };\n        return self.rpcHandler_.updateProfile(idToken, profileRequest);\n      })\n      .then(function(response) {\n        // Calls to SetAccountInfo may invalidate old tokens.\n        self.updateTokensIfPresent(response);\n        // Update properties.\n        self.updateProperty('displayName',\n            response[fireauth.AuthUser.SetAccountInfoField.DISPLAY_NAME] ||\n            null);\n        self.updateProperty('photoURL',\n            response[fireauth.AuthUser.SetAccountInfoField.PHOTO_URL] || null);\n        goog.array.forEach(self['providerData'], function(userInfo) {\n          // Check if password provider is linked.\n          if (userInfo['providerId'] === fireauth.idp.ProviderId.PASSWORD) {\n            // If so, update both fields in that provider.\n            fireauth.object.setReadonlyProperty(\n                userInfo, 'displayName', self['displayName']);\n            fireauth.object.setReadonlyProperty(\n                userInfo, 'photoURL', self['photoURL']);\n          }\n        });\n        // Notify changes and resolve.\n        return self.notifyStateChangeListeners_();\n      })\n      .then(fireauth.AuthUser.returnNothing_));\n};\n\n\n/**\n * Unlinks a provider from an account.\n * @param {!fireauth.idp.ProviderId} providerId The ID of the provider to\n *     unlink.\n * @return {!goog.Promise<!fireauth.AuthUser>}\n */\nfireauth.AuthUser.prototype.unlink = function(providerId) {\n  var self = this;\n  // Make sure we have updated user providers to avoid removing a linked\n  // provider that hasn't been updated in current copy of user.\n  // Register this pending promise. This will also check for user invalidation.\n  return this.registerPendingPromise_(\n      this.reloadWithoutSaving_()\n      .then(function(idToken) {\n        // Provider already unlinked.\n        if (!goog.array.contains(self.getProviderIds(), providerId)) {\n          return self.notifyStateChangeListeners_()\n              .then(function() {\n                throw new fireauth.AuthError(\n                    fireauth.authenum.Error.NO_SUCH_PROVIDER);\n              });\n        }\n        // We delete the providerId given.\n        return self.rpcHandler_\n            .deleteLinkedAccounts(idToken, [providerId])\n            .then(function(resp) {\n              // Construct the set of provider IDs returned by server.\n              var remainingProviderIds = {};\n              var userInfo = resp[fireauth.AuthUser.SetAccountInfoField.\n                  PROVIDER_USER_INFO] || [];\n              goog.array.forEach(userInfo, function(obj) {\n                remainingProviderIds[\n                    obj[fireauth.AuthUser.SetAccountInfoField.PROVIDER_ID]] =\n                    true;\n              });\n\n              // Remove all provider data objects where the provider ID no\n              // longer exists in this user.\n              goog.array.forEach(self.getProviderIds(), function(pId) {\n                if (!remainingProviderIds[pId]) {\n                  // This provider no longer linked, remove it from user.\n                  self.removeProviderData(pId);\n                }\n              });\n\n              // Remove the phone number if the phone provider was unlinked.\n              if (!remainingProviderIds[fireauth.PhoneAuthProvider[\n                      'PROVIDER_ID']]) {\n                fireauth.object.setReadonlyProperty(self, 'phoneNumber', null);\n              }\n\n              return self.notifyStateChangeListeners_();\n            });\n      }));\n};\n\n\n/**\n * Deletes the user, triggering an Auth token change if successful.\n * @return {!goog.Promise<void>}\n */\nfireauth.AuthUser.prototype.delete = function() {\n  // Notice the way of declaring the method, it's to avoid a weird bug on IE8.\n  var self = this;\n  // Register this pending promise. This will also check for user invalidation.\n  return this.registerPendingPromise_(\n      this.getIdToken()\n      .then(function(idToken) {\n        return self.rpcHandler_.deleteAccount(idToken);\n      })\n      .then(function() {\n        self.notifyUserDeletedListeners_();\n      }))\n      .then(function() {\n        // Destroying after the registered promise is handled ensures it won't\n        // be canceled.\n        self.destroy();\n      });\n};\n\n\n/**\n * Tells the Auth event manager if this user is the owner of a detected Auth\n * event. A user can handle linkWithPopup and linkWithRedirect operations.\n * In addition, the event ID should match the user's event IDs.\n * @param {!fireauth.AuthEvent.Type} mode The Auth operation mode (popup,\n *     redirect).\n * @param {?string=} opt_eventId The event ID.\n * @return {boolean} Whether the Auth event handler can handler the provided\n *     event.\n * @override\n */\nfireauth.AuthUser.prototype.canHandleAuthEvent = function(mode, opt_eventId) {\n  if (mode == fireauth.AuthEvent.Type.LINK_VIA_POPUP &&\n      this.getPopupEventId() == opt_eventId &&\n      this.pendingPopupResolvePromise_) {\n    // The link via popup event's ID matches the user's popup event ID which\n    // makes this user the owner of this event.\n    return true;\n  } else if (mode == fireauth.AuthEvent.Type.REAUTH_VIA_POPUP &&\n      this.getPopupEventId() == opt_eventId &&\n      this.pendingPopupResolvePromise_) {\n    // The reauth via popup event's ID matches the user's popup event ID which\n    // makes this user the owner of this event.\n    return true;\n  } else if (mode == fireauth.AuthEvent.Type.LINK_VIA_REDIRECT &&\n             this.getRedirectEventId() == opt_eventId) {\n    // The link via redirect event's ID matches the user's redirect event ID\n    // which makes this user the owner of this event.\n    return true;\n  } else if (mode == fireauth.AuthEvent.Type.REAUTH_VIA_REDIRECT &&\n             this.getRedirectEventId() == opt_eventId) {\n    // The reauth via redirect event's ID matches the user's redirect event ID\n    // which makes this user the owner of this event.\n    return true;\n  }\n  return false;\n};\n\n\n/**\n * Completes the pending popup operation. If error is not null, rejects with the\n * error. Otherwise, it resolves with the popup redirect result.\n * @param {!fireauth.AuthEvent.Type} mode The Auth operation mode (popup,\n *     redirect).\n * @param {?fireauth.AuthEventManager.Result} popupRedirectResult The result\n *     to resolve with when no error supplied.\n * @param {?fireauth.AuthError} error When supplied, the promise will reject.\n * @param {?string=} opt_eventId The event ID.\n * @override\n */\nfireauth.AuthUser.prototype.resolvePendingPopupEvent =\n    function(mode, popupRedirectResult, error, opt_eventId) {\n  // Only handles popup events with event IDs that match a pending popup ID.\n  if ((mode != fireauth.AuthEvent.Type.LINK_VIA_POPUP &&\n       mode != fireauth.AuthEvent.Type.REAUTH_VIA_POPUP) ||\n      opt_eventId != this.getPopupEventId()) {\n    return;\n  }\n  if (error && this.pendingPopupRejectPromise_) {\n    // Reject with error for supplied mode.\n    this.pendingPopupRejectPromise_(error);\n  } else if (popupRedirectResult &&\n             !error &&\n             this.pendingPopupResolvePromise_) {\n    // Resolve with result for supplied mode.\n    this.pendingPopupResolvePromise_(popupRedirectResult);\n  }\n  // Now that event is resolved, delete timeout promise.\n  if (this.popupTimeoutPromise_) {\n    this.popupTimeoutPromise_.cancel();\n    this.popupTimeoutPromise_ = null;\n  }\n  // Delete pending promises.\n  delete this.pendingPopupResolvePromise_;\n  delete this.pendingPopupRejectPromise_;\n};\n\n\n/**\n * Returns the handler's appropriate popup and redirect sign in operation\n * finisher. Can handle link or reauth events that match existing event IDs.\n * @param {!fireauth.AuthEvent.Type} mode The Auth operation mode (popup,\n *     redirect).\n * @param {?string=} opt_eventId The optional event ID.\n * @return {?function(string, string, ?string,\n *     ?string=):!goog.Promise<!fireauth.AuthEventManager.Result>}\n * @override\n */\nfireauth.AuthUser.prototype.getAuthEventHandlerFinisher =\n    function(mode, opt_eventId) {\n  if (mode == fireauth.AuthEvent.Type.LINK_VIA_POPUP &&\n      opt_eventId == this.getPopupEventId()) {\n    // Link with popup ID matches popup event ID.\n    return goog.bind(this.finishPopupAndRedirectLink, this);\n  } else if (mode == fireauth.AuthEvent.Type.REAUTH_VIA_POPUP &&\n      opt_eventId == this.getPopupEventId()) {\n    // Reauth with popup ID matches popup event ID.\n    return goog.bind(this.finishPopupAndRedirectReauth, this);\n  } else if (mode == fireauth.AuthEvent.Type.LINK_VIA_REDIRECT &&\n             this.getRedirectEventId() == opt_eventId) {\n    // Link with redirect ID matches redirect event ID.\n    return goog.bind(this.finishPopupAndRedirectLink, this);\n  } else if (mode == fireauth.AuthEvent.Type.REAUTH_VIA_REDIRECT &&\n             this.getRedirectEventId() == opt_eventId) {\n    // Reauth with redirect ID matches redirect event ID.\n    return goog.bind(this.finishPopupAndRedirectReauth, this);\n  }\n  return null;\n};\n\n\n/**\n * @return {string} The generated event ID used to identify a popup or redirect\n *     event.\n * @private\n */\nfireauth.AuthUser.prototype.generateEventId_ = function() {\n  return fireauth.util.generateEventId(this['uid'] + ':::');\n};\n\n\n/**\n * Links to Auth provider via popup.\n * @param {!fireauth.AuthProvider} provider The Auth provider to sign in with.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.AuthUser.prototype.linkWithPopup = function(provider) {\n  var self = this;\n  // Additional check to return to fail when the provider is already linked.\n  var additionalCheck = function() {\n    return self.checkIfAlreadyLinked_(provider['providerId'])\n        .then(function() {\n          // Notify state listeners after the check as it will update the user\n          // state.\n          return self.notifyStateChangeListeners_();\n        });\n  };\n  return this.runOperationWithPopup_(\n      fireauth.AuthEvent.Type.LINK_VIA_POPUP, provider, additionalCheck, false);\n};\n\n\n/**\n * Reauthenticate to Auth provider via popup.\n * @param {!fireauth.AuthProvider} provider The Auth provider to sign in with.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.AuthUser.prototype.reauthenticateWithPopup = function(provider) {\n  // No additional check needed before running this operation.\n  var additionalCheck = function() {\n    return goog.Promise.resolve();\n  };\n  return this.runOperationWithPopup_(\n      fireauth.AuthEvent.Type.REAUTH_VIA_POPUP,\n      provider,\n      additionalCheck,\n      // Do not update token and skip session invalidation check.\n      true);\n};\n\n\n/**\n * Runs a specific OAuth operation using the Auth provider via popup.\n * @param {!fireauth.AuthEvent.Type} mode The mode of operation (link or\n *     reauth).\n * @param {!fireauth.AuthProvider} provider The Auth provider to sign in with.\n * @param {function():!goog.Promise} additionalCheck The additional check to\n *     run before proceeding with the popup processing.\n * @param {boolean} isReauthOperation whether this is a reauth operation or not.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n * @private\n */\nfireauth.AuthUser.prototype.runOperationWithPopup_ =\n    function(mode, provider, additionalCheck, isReauthOperation) {\n  // Check if popup and redirect are supported in this environment.\n  if (!fireauth.util.isPopupRedirectSupported()) {\n    return goog.Promise.reject(new fireauth.AuthError(\n        fireauth.authenum.Error.OPERATION_NOT_SUPPORTED));\n  }\n  // Quickly throw user invalidation error if already invalidated.\n  if (this.userInvalidatedError_ &&\n      // Skip invalidation check as reauthentication could revalidate a user.\n      !isReauthOperation) {\n    return goog.Promise.reject(this.userInvalidatedError_);\n  }\n  var self = this;\n  // Popup the window immediately to make sure the browser associates the\n  // popup with the click that triggered it.\n\n  // Get provider settings.\n  var settings = fireauth.idp.getIdpSettings(provider['providerId']);\n  // There could multiple users at the same time and multiple users could have\n  // the same UID. So try to ensure event ID uniqueness.\n  var eventId = this.generateEventId_();\n  // If incapable of redirecting popup from opener, popup destination URL\n  // directly. This could also happen in a sandboxed iframe.\n  var oauthHelperWidgetUrl = null;\n  if ((!fireauth.util.runsInBackground() || fireauth.util.isIframe()) &&\n      this.authDomain_ &&\n      provider['isOAuthProvider']) {\n    oauthHelperWidgetUrl =\n        fireauth.iframeclient.IfcHandler.getOAuthHelperWidgetUrl(\n            this.authDomain_,\n            this.apiKey_,\n            this.appName_,\n            mode,\n            provider,\n            null,\n            eventId,\n            firebase.SDK_VERSION || null,\n            null,\n            null,\n            this['tenantId']);\n  }\n  // The popup must have a name, otherwise when successive popups are triggered\n  // they will all render in the same instance and none will succeed since the\n  // popup cancel of first window will close the shared popup window instance.\n  var popupWin =\n      fireauth.util.popup(\n          oauthHelperWidgetUrl,\n          fireauth.util.generateRandomString(),\n          settings && settings.popupWidth,\n          settings && settings.popupHeight);\n  var p = additionalCheck().then(function() {\n    // Auth event manager must be available for account linking or\n    // reauthentication to be possible.\n    self.getAuthEventManager();\n    if (!isReauthOperation) {\n      // Some operations like reauthenticate do not require this.\n      return self.getIdToken().then(function(idToken) {});\n    }\n  }).then(function() {\n    // Process popup request.\n    return self.authEventManager_.processPopup(\n        popupWin, mode, provider, eventId, !!oauthHelperWidgetUrl,\n        self['tenantId']);\n  }).then(function() {\n    return new goog.Promise(function(resolve, reject) {\n      // Expire other pending promises if still available.\n      self.resolvePendingPopupEvent(\n          mode,\n          null,\n          new fireauth.AuthError(fireauth.authenum.Error.EXPIRED_POPUP_REQUEST),\n          // Existing popup event ID.\n          self.getPopupEventId());\n      // Save current pending promises.\n      self.pendingPopupResolvePromise_ = resolve;\n      self.pendingPopupRejectPromise_ = reject;\n      // Overwrite popup event ID with new one.\n      self.setPopupEventId(eventId);\n      // Keep track of timeout promise to cancel it on promise resolution before\n      // it times out.\n      self.popupTimeoutPromise_ =\n          self.authEventManager_.startPopupTimeout(\n              self, mode, /** @type {!Window} */ (popupWin), eventId);\n    });\n  }).then(function(result) {\n    // On resolution, close popup if still opened and pass result through.\n    if (popupWin) {\n      fireauth.util.closeWindow(popupWin);\n    }\n    if (result) {\n      return fireauth.object.makeReadonlyCopy(result);\n    }\n    return null;\n  }).thenCatch(function(error) {\n    if (popupWin) {\n      fireauth.util.closeWindow(popupWin);\n    }\n    throw error;\n  });\n  // Register this pending promise. This will also check for user invalidation.\n  return /** @type {!goog.Promise<!fireauth.AuthEventManager.Result>} */ (\n      this.registerPendingPromise_(\n          p,\n          // Skip invalidation check as reauthentication could revalidate a\n          // user.\n          isReauthOperation));\n};\n\n\n/**\n * Links to Auth provider via redirect.\n * @param {!fireauth.AuthProvider} provider The Auth provider to sign in with.\n * @return {!goog.Promise<void>}\n */\nfireauth.AuthUser.prototype.linkWithRedirect = function(provider) {\n  var mode = fireauth.AuthEvent.Type.LINK_VIA_REDIRECT;\n  var self = this;\n  // Additional check to return to fail when the provider is already linked.\n  var additionalCheck = function() {\n    return self.checkIfAlreadyLinked_(provider['providerId']);\n  };\n  return this.runOperationWithRedirect_(mode, provider, additionalCheck, false);\n};\n\n\n/**\n * Reauthenticates to Auth provider via redirect.\n * @param {!fireauth.AuthProvider} provider The Auth provider to sign in with.\n * @return {!goog.Promise<void>}\n */\nfireauth.AuthUser.prototype.reauthenticateWithRedirect = function(provider) {\n  // No additional check needed.\n  var additionalCheck = function() {\n    return goog.Promise.resolve();\n  };\n  return this.runOperationWithRedirect_(\n      fireauth.AuthEvent.Type.REAUTH_VIA_REDIRECT,\n      provider,\n      additionalCheck,\n      // Do not update token and skip session invalidation check.\n      true);\n};\n\n\n\n/**\n * Runs a specific OAuth operation using the Auth provider via redirect.\n * @param {!fireauth.AuthEvent.Type} mode The mode of operation (link or\n *     reauth).\n * @param {!fireauth.AuthProvider} provider The Auth provider to sign in with.\n * @param {function():!goog.Promise} additionalCheck The additional check to\n *     run before proceeding with the redirect processing.\n * @param {boolean} isReauthOperation whether this is a reauth operation or not.\n * @return {!goog.Promise<void>}\n * @private\n */\nfireauth.AuthUser.prototype.runOperationWithRedirect_ =\n    function(mode, provider, additionalCheck, isReauthOperation) {\n  // Check if popup and redirect are supported in this environment.\n  if (!fireauth.util.isPopupRedirectSupported()) {\n    return goog.Promise.reject(new fireauth.AuthError(\n        fireauth.authenum.Error.OPERATION_NOT_SUPPORTED));\n  }\n  // Quickly throw user invalidation error if already invalidated.\n  if (this.userInvalidatedError_ &&\n      // Skip invalidation check as reauthentication could revalidate a user.\n      !isReauthOperation) {\n    return goog.Promise.reject(this.userInvalidatedError_);\n  }\n  var self = this;\n  var errorThrown = null;\n  // There could multiple users at the same time and multiple users could have\n  // the same UID. So try to ensure event ID uniqueness.\n  var eventId = this.generateEventId_();\n  var p = additionalCheck().then(function() {\n    // Auth event manager must be available for account linking or\n    // reauthentication to be possible.\n    self.getAuthEventManager();\n    if (!isReauthOperation) {\n      // Some operations like reauthenticate do not require this.\n      return self.getIdToken().then(function(idToken) {});\n    }\n  }).then(function() {\n    // Process redirect operation.\n    self.setRedirectEventId(eventId);\n    // Before redirecting save the event ID.\n    // It is important that the user redirect event ID is updated in storage\n    // before redirecting.\n    return self.notifyStateChangeListeners_();\n  }).then(function(user) {\n    if (self.redirectStorageManager_) {\n      // Save the user before redirecting in case it is not current so that it\n      // can be retrieved after reloading for linking or reauthentication to\n      // succeed.\n      return self.redirectStorageManager_.setRedirectUser(self);\n    }\n    return user;\n  }).then(function(user) {\n    // Complete the redirect operation.\n    return self.authEventManager_.processRedirect(\n        mode, provider, eventId, self['tenantId']);\n  }).thenCatch(function(error) {\n    // Catch error if any is generated.\n    errorThrown = error;\n    if (self.redirectStorageManager_) {\n      // If an error is detected, delete the redirected user from storage.\n      return self.redirectStorageManager_.removeRedirectUser();\n    }\n    // No storage manager, just throw error.\n    throw errorThrown;\n  }).then(function() {\n    // Rethrow the error.\n    if (errorThrown) {\n      throw errorThrown;\n    }\n  });\n  // Register this pending promise. This will also check for user invalidation.\n  return /** @type {!goog.Promise<void>} */ (this.registerPendingPromise_(\n      p,\n      // Skip invalidation check as reauthentication could revalidate a user.\n      isReauthOperation));\n};\n\n\n/**\n * @return {!fireauth.AuthEventManager} The user's Auth event manager.\n */\nfireauth.AuthUser.prototype.getAuthEventManager = function() {\n  // Either return the manager instance if available, otherwise throw an error.\n  if (this.authEventManager_ && this.popupRedirectEnabled_) {\n    return this.authEventManager_;\n  } else if (this.authEventManager_ && !this.popupRedirectEnabled_) {\n    // This should not happen as Auth will enable a user after it is created.\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR);\n  }\n  throw new fireauth.AuthError(fireauth.authenum.Error.MISSING_AUTH_DOMAIN);\n};\n\n\n/**\n * Finishes the popup and redirect account linking operations.\n * @param {string} requestUri The callback URL with the OAuth response.\n * @param {string} sessionId The session ID used to generate the authUri.\n * @param {?string} tenantId The tenant ID.\n * @param {?string=} opt_postBody The optional POST body content.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.AuthUser.prototype.finishPopupAndRedirectLink =\n    function(requestUri, sessionId, tenantId, opt_postBody) {\n  var self = this;\n  // Now that popup has responded, delete popup timeout promise.\n  if (this.popupTimeoutPromise_) {\n    this.popupTimeoutPromise_.cancel();\n    this.popupTimeoutPromise_ = null;\n  }\n  var userCredential = null;\n  // This routine could be run before init state, make sure it waits for that to\n  // complete otherwise this would fail as user not loaded from storage yet.\n  var p = this.getIdToken()\n      .then(function(idToken) {\n        var request = {\n          'requestUri': requestUri,\n          'postBody': opt_postBody,\n          'sessionId': sessionId,\n          // To link a tenant user, the tenant ID will be passed to the\n          // backend as part of the ID token.\n          'idToken': idToken\n        };\n        // This operation should fail if new ID token differs from old one.\n        // So this can be treate as a profile update operation.\n        return self.rpcHandler_.verifyAssertionForLinking(request);\n      })\n      .then(function(response) {\n        // Get user credential.\n        userCredential = self.getUserCredential_(\n            response, fireauth.constants.OperationType.LINK);\n        // Finalizes the linking process.\n        return self.finalizeLinking_(response);\n      })\n      .then(function(user) {\n        // Return the user credential response.\n        return userCredential;\n      });\n  return /** @type {!goog.Promise<!fireauth.AuthEventManager.Result>} */ (\n      this.registerPendingPromise_(p));\n};\n\n\n/**\n * Finishes the popup and redirect account reauthentication operations.\n * @param {string} requestUri The callback URL with the OAuth response.\n * @param {string} sessionId The session ID used to generate the authUri.\n * @param {?string} tenantId The tenant ID.\n * @param {?string=} opt_postBody The optional POST body content.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>}\n */\nfireauth.AuthUser.prototype.finishPopupAndRedirectReauth =\n    function(requestUri, sessionId, tenantId, opt_postBody) {\n  var self = this;\n  // Now that popup has responded, delete popup timeout promise.\n  if (this.popupTimeoutPromise_) {\n    this.popupTimeoutPromise_.cancel();\n    this.popupTimeoutPromise_ = null;\n  }\n  var userCredential = null;\n  // This routine could be run before init state, make sure it waits for that to\n  // complete otherwise this would fail as user not loaded from storage yet.\n  var p = goog.Promise.resolve()\n      .then(function() {\n        var request = {\n          'requestUri': requestUri,\n          'sessionId': sessionId,\n          'postBody': opt_postBody,\n          // To reauthenticate a tenant user, the tenant ID will be passed to\n          // the backend explicitly.\n          // Even if tenant ID is null, still pass it to RPC handler explicitly\n          // so that it won't be overridden by RPC handler's tenant ID.\n          'tenantId': tenantId\n        };\n        // Finish sign in by calling verifyAssertionForExisting and then\n        // matching the returned ID token's UID with the current user's.\n        return fireauth.AuthCredential.verifyTokenResponseUid(\n            self.rpcHandler_.verifyAssertionForExisting(request),\n            self['uid']);\n      }).then(function(response) {\n        // Get credential from response if available.\n        // Get user credential.\n        userCredential = self.getUserCredential_(\n            response, fireauth.constants.OperationType.REAUTHENTICATE);\n        // If the credential is valid and matches the current user ID, then\n        // update the tokens accordingly.\n        self.updateTokensIfPresent(response);\n        // This could potentially validate an invalidated user. This happens in\n        // the case a password reset was applied. The refresh token is expired.\n        // Reauthentication should revalidate the user.\n        // User would remain non current if already signed out, but should be\n        // enabled again.\n        self.userInvalidatedError_ = null;\n        return self.reload();\n      })\n      .then(function() {\n        // Return the user credential response.\n        return userCredential;\n      });\n  return /** @type {!goog.Promise<!fireauth.AuthEventManager.Result>} */ (\n      this.registerPendingPromise_(\n          p,\n          // Skip invalidation check as reauthentication could revalidate a\n          // user.\n          true));\n};\n\n\n/**\n * Sends the verification email to the email in the user's account.\n * @param {?Object=} opt_actionCodeSettings The optional action code settings\n *     object.\n * @return {!goog.Promise<void>}\n */\nfireauth.AuthUser.prototype.sendEmailVerification =\n    function(opt_actionCodeSettings) {\n  var self = this;\n  var idToken = null;\n  // Register this pending promise. This will also check for user invalidation.\n  return this.registerPendingPromise_(\n      // Wrap in promise as ActionCodeSettings constructor could throw a\n      // synchronous error if invalid arguments are specified.\n      this.getIdToken().then(function(latestIdToken) {\n        idToken = latestIdToken;\n        if (typeof opt_actionCodeSettings !== 'undefined' &&\n            // Ignore empty objects.\n            !goog.object.isEmpty(opt_actionCodeSettings)) {\n          return new fireauth.ActionCodeSettings(\n              /** @type {!Object} */ (opt_actionCodeSettings)).buildRequest();\n        }\n        return {};\n      })\n      .then(function(additionalRequestData) {\n        return self.rpcHandler_.sendEmailVerification(\n            /** @type {string} */ (idToken), additionalRequestData);\n      })\n      .then(function(email) {\n        if (self['email'] != email) {\n          // Our local copy does not have an email. If the email changed,\n          // reload the user.\n          return self.reload();\n        }\n      })\n      .then(function() {\n        // Return nothing.\n      }));\n};\n\n\n/**\n * Sends the verification email before updating the email on the user.\n * @param {string} newEmail The new email.\n * @param {?Object=} opt_actionCodeSettings The optional action code settings\n *     object.\n * @return {!goog.Promise<void>}\n */\nfireauth.AuthUser.prototype.verifyBeforeUpdateEmail =\n    function(newEmail, opt_actionCodeSettings) {\n  var self = this;\n  var idToken = null;\n  // Register this pending promise. This will also check for user invalidation.\n  return this.registerPendingPromise_(\n      // Wrap in promise as ActionCodeSettings constructor could throw a\n      // synchronous error if invalid arguments are specified.\n      this.getIdToken().then(function(latestIdToken) {\n        idToken = latestIdToken;\n        if (typeof opt_actionCodeSettings !== 'undefined' &&\n            // Ignore empty objects.\n            !goog.object.isEmpty(opt_actionCodeSettings)) {\n          return new fireauth.ActionCodeSettings(\n              /** @type {!Object} */ (opt_actionCodeSettings)).buildRequest();\n        }\n        return {};\n      })\n      .then(function(additionalRequestData) {\n        return self.rpcHandler_.verifyBeforeUpdateEmail(\n            /** @type {string} */ (idToken), newEmail, additionalRequestData);\n      })\n      .then(function(email) {\n        if (self['email'] != email) {\n          // If the local copy of the email on user is outdated, reload the\n          // user.\n          return self.reload();\n        }\n      })\n      .then(function() {\n        // Return nothing.\n      }));\n};\n\n\n/**\n * Destroys the user object and makes further operations invalid. Sensitive\n * fields (refreshToken) are also cleared.\n */\nfireauth.AuthUser.prototype.destroy = function() {\n  // Cancel all pending promises.\n  for (var i = 0; i < this.pendingPromises_.length; i++) {\n    this.pendingPromises_[i].cancel(fireauth.authenum.Error.MODULE_DESTROYED);\n  }\n  // Stop listening to language code changes.\n  this.setLanguageCodeChangeDispatcher(null);\n  // Stop listening to emulator config changes.\n  this.setEmulatorConfigChangeDispatcher(null);\n  // Stop listening to framework changes.\n  this.setFrameworkChangeDispatcher(null);\n  // Empty pending promises array.\n  this.pendingPromises_ = [];\n  this.destroyed_ = true;\n  // Stop proactive refresh if running.\n  this.stopProactiveRefresh();\n  fireauth.object.setReadonlyProperty(this, 'refreshToken', null);\n  // Make sure the destroyed user is unsubscribed from Auth event handling.\n  if (this.authEventManager_) {\n    this.authEventManager_.unsubscribe(this);\n  }\n};\n\n\n/**\n * Takes in a pending promise, saves it and adds a clean up callback which\n * forgets the pending promise after it is fulfilled and echoes the promise\n * back. If in the process, a user invalidation error is detected, caches the\n * error so next time a call is made on the user, the operation will fail with\n * the cached error.\n * @param {!goog.Promise<*, *>|!goog.Promise<void>} p The pending promise.\n * @param {boolean=} opt_skipInvalidationCheck Whether to skip invalidation\n *     check.\n * @return {!goog.Promise<*, *>|!goog.Promise<void>}\n * @private\n */\nfireauth.AuthUser.prototype.registerPendingPromise_ =\n    function(p, opt_skipInvalidationCheck) {\n  var self = this;\n  // Check if user invalidation occurs.\n  var processedP = this.checkIfInvalidated_(p, opt_skipInvalidationCheck);\n  // Save created promise in pending list.\n  this.pendingPromises_.push(processedP);\n  processedP.thenAlways(function() {\n    // When fulfilled, remove from pending list.\n    goog.array.remove(self.pendingPromises_, processedP);\n  });\n  // Return the promise.\n  return processedP\n      .thenCatch(function(error) {\n        var multiFactorError = null;\n        if (error && error['code'] === 'auth/multi-factor-auth-required') {\n          multiFactorError = fireauth.MultiFactorError.fromPlainObject(\n              error.toPlainObject(),\n              self.getAuth_(),\n              goog.bind(self.handleMultiFactorIdTokenResolver_, self));\n        }\n        throw multiFactorError || error;\n      });\n};\n\n\n/**\n * Completes multi-factor sign-in. This is only relevant for re-authentication\n * flows.\n * @param {{idToken: string, refreshToken: string}} response The successful\n *     sign-in response containing the new ID tokens.\n * @return {!goog.Promise<!fireauth.AuthEventManager.Result>} A Promise that\n *     resolves with the updated `UserCredential`.\n * @private\n */\nfireauth.AuthUser.prototype.handleMultiFactorIdTokenResolver_ =\n    function(response) {\n  var userCredential = null;\n  var self = this;\n  // Validate token response matches current user ID.\n  var p = fireauth.AuthCredential.verifyTokenResponseUid(\n      goog.Promise.resolve(response),\n      self['uid'])\n      .then(function(response) {\n        // Get credential from response if available.\n        userCredential = self.getUserCredential_(\n            response, fireauth.constants.OperationType.REAUTHENTICATE);\n        // If the credential is valid and matches the current user ID, then\n        // update the tokens accordingly.\n        self.updateTokensIfPresent(response);\n        // This could potentially validate an invalidated user.\n        self.userInvalidatedError_ = null;\n        // Reload the user with the latest profile.\n        return self.reload();\n      })\n      .then(function() {\n        // Return the user credential response.\n        return userCredential;\n      });\n  return /** @type {!goog.Promise<!fireauth.AuthEventManager.Result>} */ (\n      this.registerPendingPromise_(\n          p,\n          // Skip invalidation check as reauthentication could revalidate a\n          // user.\n          true));\n};\n\n\n/**\n * Check if user invalidation occurs. If so, it caches the error so it can be\n * thrown immediately the next time an operation is run on the user.\n * @param {!goog.Promise<*, *>|!goog.Promise<void>} p The pending promise.\n * @param {boolean=} opt_skipInvalidationCheck Whether to skip invalidation\n *     check.\n * @return {!goog.Promise<*, *>|!goog.Promise<void>}\n * @private\n */\nfireauth.AuthUser.prototype.checkIfInvalidated_ =\n    function(p, opt_skipInvalidationCheck) {\n  var self = this;\n  // Already invalidated, reject with token expired error.\n  // Unless invalidation check is to be skipped.\n  if (this.userInvalidatedError_ && !opt_skipInvalidationCheck) {\n    // Cancel pending promise.\n    p.cancel();\n    // Reject with cached error.\n    return goog.Promise.reject(this.userInvalidatedError_);\n  }\n  return p.thenCatch(function(error) {\n    // Session invalidated.\n    if (fireauth.AuthUser.isUserInvalidated_(error)) {\n      // Notify listeners of invalidated session.\n      if (!self.userInvalidatedError_) {\n        self.notifyUserInvalidatedListeners_();\n      }\n      // Cache the invalidation error.\n      self.userInvalidatedError_ = /** @type {!fireauth.AuthError} */ (error);\n    }\n    // Rethrow the error.\n    throw error;\n  });\n};\n\n\n/**\n * @return {!Object} The object representation of the user instance.\n * @override\n */\nfireauth.AuthUser.prototype.toJSON = function() {\n  // Return the plain object representation in case JSON.stringify is called on\n  // a user instance.\n  return this.toPlainObject();\n};\n\n\n/**\n * @return {!Object} The object representation of the user instance.\n */\nfireauth.AuthUser.prototype.toPlainObject = function() {\n  var obj = {\n    'uid': this['uid'],\n    'displayName': this['displayName'],\n    'photoURL': this['photoURL'],\n    'email': this['email'],\n    'emailVerified': this['emailVerified'],\n    'phoneNumber': this['phoneNumber'],\n    'isAnonymous': this['isAnonymous'],\n    'tenantId': this['tenantId'],\n    'providerData': [],\n    'apiKey': this.apiKey_,\n    'appName': this.appName_,\n    'authDomain': this.authDomain_,\n    'stsTokenManager': this.stsTokenManager_.toPlainObject(),\n    // Redirect event ID must be maintained in case there is a pending redirect\n    // event.\n    'redirectEventId': this.getRedirectEventId()\n  };\n  // Extend user plain object with metadata object.\n  if (this['metadata']) {\n    goog.object.extend(obj, this['metadata'].toPlainObject());\n  }\n  goog.array.forEach(this['providerData'], function(userInfo) {\n    obj['providerData'].push(fireauth.object.makeWritableCopy(userInfo));\n  });\n  // Extend plain object with multi-factor user data.\n  goog.object.extend(obj, this.multiFactorUser_.toPlainObject());\n  return obj;\n};\n\n\n/**\n * Converts a plain user object to {@code fireauth.AuthUser}.\n * @param {!Object} user The object representation of the user instance.\n * @return {?fireauth.AuthUser} The Firebase user object corresponding to\n *     object.\n */\nfireauth.AuthUser.fromPlainObject = function(user) {\n  if (!user['apiKey']) {\n    return null;\n  }\n  var options = {\n    'apiKey': user['apiKey'],\n    'authDomain': user['authDomain'],\n    'appName': user['appName'],\n    'emulatorConfig': user['emulatorConfig']\n  };\n  // Convert to server response format. Constructor does not take\n  // stsTokenManager toPlainObject as that format is different than the return\n  // server response which is always used to initialize a user instance.\n  var stsTokenManagerResponse = {};\n  if (user['stsTokenManager'] &&\n      user['stsTokenManager']['accessToken']) {\n    stsTokenManagerResponse[fireauth.RpcHandler.AuthServerField.ID_TOKEN] =\n        user['stsTokenManager']['accessToken'];\n    // Refresh token could be expired.\n    stsTokenManagerResponse[fireauth.RpcHandler.AuthServerField.REFRESH_TOKEN] =\n        user['stsTokenManager']['refreshToken'] || null;\n    const expirationTime = user['stsTokenManager']['expirationTime'];\n    if (expirationTime) {\n      stsTokenManagerResponse[fireauth.RpcHandler.AuthServerField\n                                  .EXPIRES_IN] =\n          (expirationTime - Date.now()) / 1000;\n    }\n  } else {\n    // Token response is a required field.\n    return null;\n  }\n  var firebaseUser = new fireauth.AuthUser(options,\n      stsTokenManagerResponse,\n      /** @type {!fireauth.AuthUser.AccountInfo} */ (user));\n  if (user['providerData']) {\n    goog.array.forEach(user['providerData'], function(userInfo) {\n      if (userInfo) {\n        firebaseUser.addProviderData(/** @type {!fireauth.AuthUserInfo} */ (\n            fireauth.object.makeReadonlyCopy(userInfo)));\n      }\n    });\n  }\n  // Redirect event ID must be restored to complete any pending link with\n  // redirect operation owned by this user.\n  if (user['redirectEventId']) {\n    firebaseUser.setRedirectEventId(user['redirectEventId']);\n  }\n  return firebaseUser;\n};\n\n\n\n/**\n * Factory method for initializing a Firebase user object and populating its\n * user info. This is the recommended way for initializing a user externally.\n * On sign in/up operation, the server returns a token response. The response is\n * all that is needed to initialize this user.\n * @param {!Object} appOptions The application options.\n * @param {!Object} stsTokenResponse The server STS token response.\n * @param {?fireauth.storage.RedirectUserManager=}\n *     opt_redirectStorageManager The utility used to store and delete a user on\n *     link with redirect.\n * @param {?Array<string>=} opt_frameworks The list of frameworks to log on the\n *     user on initialization.\n * @return {!goog.Promise<!fireauth.AuthUser>}\n */\nfireauth.AuthUser.initializeFromIdTokenResponse = function(appOptions,\n    stsTokenResponse, opt_redirectStorageManager, opt_frameworks) {\n  // Initialize the Firebase Auth user.\n  var user = new fireauth.AuthUser(\n      appOptions, stsTokenResponse);\n  // If redirect storage manager provided, set it.\n  if (opt_redirectStorageManager) {\n    user.setRedirectStorageManager(opt_redirectStorageManager);\n  }\n  // If frameworks provided, set it.\n  if (opt_frameworks) {\n    user.setFramework(opt_frameworks);\n  }\n  // Updates the user info and data and resolves with a user instance.\n  return user.reload().then(function() {\n    return user;\n  });\n};\n\n\n/**\n * Returns an AuthUser copy of the provided user using the provided parameters\n * without making any network request.\n * @param {!fireauth.AuthUser} user The user to be copied.\n * @param {?Object=} opt_appOptions The application options.\n * @param {?fireauth.storage.RedirectUserManager=}\n *     opt_redirectStorageManager The utility used to store and delete a user on\n *     link with redirect.\n * @param {?Array<string>=} opt_frameworks The list of frameworks to log on the\n *     user on initialization.\n * @return {!fireauth.AuthUser}\n */\nfireauth.AuthUser.copyUser = function(user, opt_appOptions,\n    opt_redirectStorageManager, opt_frameworks) {\n  var appOptions = opt_appOptions || {\n    'apiKey': user.apiKey_,\n    'authDomain': user.authDomain_,\n    'appName': user.appName_\n  };\n  var newUser = new fireauth.AuthUser(\n      appOptions, user.getStsTokenManager().toServerResponse());\n  // If redirect storage manager provided, set it.\n  if (opt_redirectStorageManager) {\n    newUser.setRedirectStorageManager(opt_redirectStorageManager);\n  }\n  // If frameworks provided, set it.\n  if (opt_frameworks) {\n    newUser.setFramework(opt_frameworks);\n  }\n  // Copy remaining properties.\n  newUser.copy(user);\n  return newUser;\n};\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Utility class to retrieve and cache STS token.\n */\ngoog.provide('fireauth.StsTokenManager');\ngoog.provide('fireauth.StsTokenManager.Response');\ngoog.provide('fireauth.StsTokenManager.ResponseData');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.IdToken');\ngoog.require('fireauth.RpcHandler');\ngoog.require('fireauth.authenum.Error');\ngoog.require('goog.Promise');\ngoog.require('goog.asserts');\n\n\n\n/**\n * Creates STS token manager.\n *\n * @param {!fireauth.RpcHandler} rpcHandler Handler for RPC requests.\n * @constructor\n */\nfireauth.StsTokenManager = function(rpcHandler) {\n  /**\n   * @const @private {!fireauth.RpcHandler} The RPC handler used to request STS\n   *     tokens.\n   */\n  this.rpcHandler_ = rpcHandler;\n  /** @private {?string} The STS refresh token. */\n  this.refreshToken_ = null;\n  /** @private {?fireauth.IdToken} The STS ID token. */\n  this.accessToken_ = null;\n  /** @private {number} The expiration time of the token in epoch millis. */\n  this.expiresAt_ = Date.now();\n};\n\n\n/**\n * @return {!Object} The plain object representation of the STS token manager.\n */\nfireauth.StsTokenManager.prototype.toPlainObject = function() {\n  return {\n    'apiKey': this.rpcHandler_.getApiKey(),\n    'refreshToken': this.refreshToken_,\n    'accessToken': this.accessToken_ && this.accessToken_.toString(),\n    // To support downgrade flows, return expiration time.\n    'expirationTime': this.getExpirationTime()\n  };\n};\n\n\n/**\n * @param {!fireauth.RpcHandler} rpcHandler The RPC handler for the token\n *     manager.\n * @param {?Object} obj The plain object whose STS token manager instance is to\n *     be returned.\n * @return {?fireauth.StsTokenManager} The STS token manager instance from the\n *     plain object provided using the RPC handler provided.\n */\nfireauth.StsTokenManager.fromPlainObject = function(rpcHandler, obj) {\n  let stsTokenManager = null;\n  if (obj && obj['apiKey']) {\n    // These should be always equals and must be enforced in internal use.\n    goog.asserts.assert(obj['apiKey'] == rpcHandler.getApiKey());\n    stsTokenManager = new fireauth.StsTokenManager(rpcHandler);\n    stsTokenManager.setRefreshToken(obj['refreshToken']);\n    stsTokenManager.setAccessToken(obj['accessToken']);\n    stsTokenManager.setExpiresAt(obj['expirationTime']);\n  }\n  return stsTokenManager;\n};\n\n\n/**\n * @typedef {{\n *   accessToken: (?string),\n *   refreshToken: (?string)\n * }}\n */\nfireauth.StsTokenManager.Response;\n\n\n/**\n * @typedef {{\n *   access_token: (?string|undefined),\n *   refresh_token: (?string|undefined)\n * }}\n */\nfireauth.StsTokenManager.ResponseData;\n\n\n/**\n * @param {?string} refreshToken The STS refresh token.\n */\nfireauth.StsTokenManager.prototype.setRefreshToken = function(refreshToken) {\n  this.refreshToken_ = refreshToken;\n};\n\n\n/**\n * @param {?string} accessToken The STS access token.\n */\nfireauth.StsTokenManager.prototype.setAccessToken = function(accessToken) {\n  this.accessToken_ = fireauth.IdToken.parse(accessToken || '');\n};\n\n/**\n * To account for client side clock skew, we try to set the expiration time\n * using the local clock by adding the server TTL. If not provided, expiresAt\n * will be set from the accessToken by taking the difference between the exp\n * and iat fields.\n *\n * @param {number=} expiresIn The expiration TTL in seconds.\n */\nfireauth.StsTokenManager.prototype.setExpiresIn = function(expiresIn) {\n  expiresIn = typeof expiresIn !== 'undefined' ? expiresIn :\n      this.accessToken_ ? this.accessToken_.getExpiresIn() :\n                          0;\n  this.expiresAt_ = Date.now() + expiresIn * 1000;\n}\n\n/**\n * Allow setting expiresAt directly when we know the time is already in the\n * local clock.\n *\n * @param {number} expiresAt The expiration time in epoch millis.\n */\nfireauth.StsTokenManager.prototype.setExpiresAt = function(expiresAt) {\n  this.expiresAt_ = expiresAt;\n}\n\n/**\n * @return {?string} The refresh token.\n */\nfireauth.StsTokenManager.prototype.getRefreshToken = function() {\n  return this.refreshToken_;\n};\n\n\n/**\n * @return {number} The STS access token expiration time in milliseconds.\n */\nfireauth.StsTokenManager.prototype.getExpirationTime = function() {\n  return this.expiresAt_;\n};\n\n\n/**\n * The number of milliseconds before the official expiration time of a token\n * to refresh that token, to provide a buffer for RPCs to complete.\n * @const {number}\n */\nfireauth.StsTokenManager.TOKEN_REFRESH_BUFFER = 30 * 1000;\n\n\n/**\n * @return {boolean} Whether the STS access token is expired or not.\n * @private\n */\nfireauth.StsTokenManager.prototype.isExpired_ = function() {\n  return Date.now() >\n      this.getExpirationTime() - fireauth.StsTokenManager.TOKEN_REFRESH_BUFFER;\n};\n\n\n/**\n * Parses a response from the server that contains STS tokens (e.g. from\n * VerifyAssertion or VerifyPassword) and save the access token, refresh token,\n * and expiration time.\n * @param {!Object} response The backend response.\n * @return {string} The STS access token.\n */\nfireauth.StsTokenManager.prototype.parseServerResponse = function(response) {\n  const idToken = response[fireauth.RpcHandler.AuthServerField.ID_TOKEN];\n  this.setAccessToken(idToken);\n  this.setRefreshToken(\n      response[fireauth.RpcHandler.AuthServerField.REFRESH_TOKEN]);\n  // Not all IDP server responses come with expiresIn, some like MFA omit it.\n  const expiresIn = response[fireauth.RpcHandler.AuthServerField.EXPIRES_IN];\n  this.setExpiresIn(\n      typeof expiresIn !== 'undefined' ? Number(expiresIn) : undefined);\n  return idToken;\n};\n\n\n/**\n * Converts STS token manager instance to server response object.\n * @return {!Object}\n */\nfireauth.StsTokenManager.prototype.toServerResponse = function() {\n  const stsTokenManagerResponse = {};\n  stsTokenManagerResponse[fireauth.RpcHandler.AuthServerField.ID_TOKEN] =\n      this.accessToken_ && this.accessToken_.toString();\n  // Refresh token could be expired.\n  stsTokenManagerResponse[fireauth.RpcHandler.AuthServerField.REFRESH_TOKEN] =\n      this.getRefreshToken();\n  return stsTokenManagerResponse;\n};\n\n\n/**\n * Copies IdToken, refreshToken and expirationTime from tokenManagerToCopy.\n * @param {!fireauth.StsTokenManager} tokenManagerToCopy\n */\nfireauth.StsTokenManager.prototype.copy = function(tokenManagerToCopy) {\n  this.accessToken_ = tokenManagerToCopy.accessToken_;\n  this.refreshToken_ = tokenManagerToCopy.refreshToken_;\n  this.expiresAt_ = tokenManagerToCopy.expiresAt_;\n};\n\n\n/**\n * Exchanges the current refresh token with an access and refresh token.\n * @return {!goog.Promise<?fireauth.StsTokenManager.Response>}\n * @private\n */\nfireauth.StsTokenManager.prototype.exchangeRefreshToken_ = function() {\n  const data = {\n    'grant_type': 'refresh_token',\n    'refresh_token': this.refreshToken_\n  };\n  return this.requestToken_(data);\n};\n\n\n/**\n * Sends a request to STS token endpoint for an access/refresh token.\n * @param {!Object} data The request data to send to STS token endpoint.\n * @return {!goog.Promise<?fireauth.StsTokenManager.Response>}\n * @private\n */\nfireauth.StsTokenManager.prototype.requestToken_ = function(data) {\n  // Send RPC request to STS token endpoint.\n  return this.rpcHandler_.requestStsToken(data)\n      .then((resp) => {\n        const response =\n            /** @type {!fireauth.StsTokenManager.ResponseData} */ (resp);\n        this.accessToken_ = fireauth.IdToken.parse(\n            response[fireauth.RpcHandler.StsServerField.ACCESS_TOKEN]);\n        this.refreshToken_ =\n            response[fireauth.RpcHandler.StsServerField.REFRESH_TOKEN];\n        this.setExpiresIn(\n            response[fireauth.RpcHandler.StsServerField.EXPIRES_IN]);\n        return /** @type {!fireauth.StsTokenManager.Response} */ ({\n          'accessToken': this.accessToken_.toString(),\n          'refreshToken': this.refreshToken_\n        });\n      })\n      .thenCatch((error) => {\n        // Refresh token expired or user deleted. In this case, reset refresh\n        // token to prevent sending the request again to the STS server unless\n        // the token is manually updated, perhaps via successful\n        // reauthentication.\n        if (error['code'] == 'auth/user-token-expired') {\n          this.refreshToken_ = null;\n        }\n        throw error;\n      });\n};\n\n\n/** @return {boolean} Whether the refresh token is expired. */\nfireauth.StsTokenManager.prototype.isRefreshTokenExpired = function() {\n  return !!(this.accessToken_ && !this.refreshToken_);\n};\n\n\n/**\n * Returns an STS token. If the cached one is unexpired it is directly returned.\n * Otherwise the existing ID token or refresh token is exchanged for a new one.\n * If there is no user signed in, returns null.\n *\n * @param {boolean=} forceRefresh Whether to force refresh token exchange.\n * @return {!goog.Promise<?fireauth.StsTokenManager.Response>}\n */\nfireauth.StsTokenManager.prototype.getToken = function(forceRefresh) {\n  forceRefresh = !!forceRefresh;\n  // Refresh token is expired.\n  if (this.isRefreshTokenExpired()) {\n    return goog.Promise.reject(\n        new fireauth.AuthError(fireauth.authenum.Error.TOKEN_EXPIRED));\n  }\n  if (!forceRefresh && this.accessToken_ && !this.isExpired_()) {\n    // Cached STS access token not expired, return it.\n    return /** @type {!goog.Promise} */ (goog.Promise.resolve({\n      'accessToken': this.accessToken_.toString(),\n      'refreshToken': this.refreshToken_\n    }));\n  } else if (this.refreshToken_) {\n    // Expired but refresh token available, exchange refresh token for STS\n    // token.\n    return this.exchangeRefreshToken_();\n  } else {\n    // No token, return null token.\n    return goog.Promise.resolve(\n        /** @type {?fireauth.StsTokenManager.Response} */ (null));\n  }\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the fireauth.storage.RedirectUserManager class which\n * provides utilities to store, retrieve and delete an Auth user during a\n * redirect operation.\n */\n\ngoog.provide('fireauth.storage.RedirectUserManager');\n\ngoog.require('fireauth.AuthUser');\ngoog.require('fireauth.authStorage');\n\n\n/**\n * Defines the Auth redirect user storage manager. It provides methods\n * to store, load and delete a user going through a link with redirect\n * operation.\n * @param {string} appId The Auth state's application ID.\n * @param {?fireauth.authStorage.Manager=} opt_manager The underlying storage\n *     manager to use. If none is provided, the default global instance is used.\n * @constructor @struct @final\n */\nfireauth.storage.RedirectUserManager = function(appId, opt_manager) {\n  /** @const @private{string} appId The Auth state's application ID. */\n  this.appId_ = appId;\n  /**\n   * @const @private{!fireauth.authStorage.Manager} The underlying storage\n   *     manager.\n   */\n  this.manager_ = opt_manager || fireauth.authStorage.Manager.getInstance();\n};\n\n\n/**\n * @const @private{!fireauth.authStorage.Key} The Auth redirect user storage\n *     identifier.\n */\nfireauth.storage.RedirectUserManager.REDIRECT_USER_KEY_ = {\n  name: 'redirectUser',\n  persistent: fireauth.authStorage.Persistence.SESSION\n};\n\n\n/**\n * Stores the user being redirected for the provided application ID.\n * @param {!fireauth.AuthUser} redirectUser The user being redirected.\n * @return {!goog.Promise<void>} A promise that resolves on success.\n */\nfireauth.storage.RedirectUserManager.prototype.setRedirectUser =\n    function(redirectUser) {\n  return this.manager_.set(\n      fireauth.storage.RedirectUserManager.REDIRECT_USER_KEY_,\n      redirectUser.toPlainObject(),\n      this.appId_);\n};\n\n\n/**\n * Removes the stored redirected user for provided app ID.\n * @return {!goog.Promise<void>} A promise that resolves on success.\n */\nfireauth.storage.RedirectUserManager.prototype.removeRedirectUser =\n    function() {\n  return this.manager_.remove(\n      fireauth.storage.RedirectUserManager.REDIRECT_USER_KEY_, this.appId_);\n};\n\n\n/**\n * @param {?string=} opt_authDomain The optional Auth domain to override if\n *     provided.\n * @return {!goog.Promise<?fireauth.AuthUser>} A promise that resolves with\n *     the stored redirected user for the provided app ID.\n */\nfireauth.storage.RedirectUserManager.prototype.getRedirectUser =\n    function(opt_authDomain) {\n  return this.manager_.get(\n      fireauth.storage.RedirectUserManager.REDIRECT_USER_KEY_, this.appId_)\n      .then(function(response) {\n        // If potential user saved, override Auth domain if authDomain is\n        // provided.\n        if (response && opt_authDomain) {\n          response['authDomain'] = opt_authDomain;\n        }\n        return fireauth.AuthUser.fromPlainObject(response || {});\n      });\n};\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the fireauth.storage.UserManager class which provides\n * utilities to retrieve, store and delete the currently logged in user and to\n * listen to external authentication changes for the same app.\n * With the ability to modify Auth state persistence. The behavior is as\n * follows:\n * Common cases:\n * <ul>\n * <li>Initially, local and session storage will be checked and the state will\n *     be loaded from there without changing it unless the developer calls\n *     setPersistence explicitly. The requirement is that at any time, Auth\n *     state can be saved using one type only of persistence and never more than\n *     one.</li>\n * <li>If the developer tries to sign in with no persistence specified, the\n *     default setting will be used (local in a browser).</li>\n * <li>If the user is not signed in and persistence is set, any future sign-in\n *     attempt will use that type of persistence.</li>\n * <li>If the user is signed in and the developer then switches persistence,\n *     that existing signed in user will change persistence to the new one. All\n *     future sign-in attempts will use that same persistence.</li>\n * <li>When signInWithRedirect is called, the current persistence type is passed\n *     along with that request and on redirect back to app will pass that type\n *     to determine how that state is saved (overriding the default). If the\n *     persistence is explicitly specified on that page, it will change that\n *     redirected Auth state persistence. This is the only time the persistence\n *     is passed from one page to another.\n *     So internally, on redirect, the redirect state is retrieved and then we\n *     check: If the persistence was explicitly provided, we override the\n *     previous type and save the Auth state using that. If no persistence was\n *     explicitly provided, we use the previous persistence type that was passed\n *     in the redirect response.</li>\n * </ul>\n * Behavior across tabs:\n * <ul>\n * <li>User can sign in using session storage on multiple tabs. Each tab cannot\n *     see the state of the other tab.</li>\n * <li>Any attempt to sign in using local storage will be detected and\n *     synchronized on all tabs. If the user was previously signed in on a\n *     specific tab using session storage, that state will be cleared.</li>\n * <li>If the user was previously signed in using local storage and then signs\n *     in using session storage, the user will be signed in on the current tab\n *     only and signed out on all other tabs.</li>\n * <li>Similar logic is applied to the ‘none’ state. In one tab, switching to\n *     ‘none’ state will delete any previously saved state in ‘local’\n *     persistence in other tabs.</li>\n * </ul>\n */\n\ngoog.provide('fireauth.storage.UserManager');\n\ngoog.require('fireauth.AuthUser');\ngoog.require('fireauth.authStorage');\ngoog.require('fireauth.constants');\ngoog.require('goog.Promise');\n\n\n/**\n * Defines the Auth user storage manager. It provides methods to\n * store, load and delete an authenticated current user. It also provides\n * methods to listen to external user changes (updates, sign in, sign out, etc.)\n * @param {string} appId The Auth state's application ID.\n * @param {?fireauth.authStorage.Manager=} opt_manager The underlying storage\n *     manager to use. If none is provided, the default global instance is used.\n * @constructor @struct @final\n */\nfireauth.storage.UserManager = function(appId, opt_manager) {\n  /** @const @private{string} appId The Auth state's application ID. */\n  this.appId_ = appId;\n  /**\n   * @const @private{!fireauth.authStorage.Manager} The underlying storage\n   *     manager.\n   */\n  this.manager_ = opt_manager || fireauth.authStorage.Manager.getInstance();\n  /**\n   * @private {?fireauth.authStorage.Key} The current Auth user storage\n   *     identifier.\n   */\n  this.currentAuthUserKey_ = null;\n  /**\n   * @private {!goog.Promise} Storage operation serializer promise. This will\n   *     initialize the current persistence used and clean up any duplicate\n   *     states or temporary values (persistence for pending redirect).\n   *     Afterwards this is used to queue storage requests to make sure\n   *     storage operations are always synchronized and read/write events are\n   *     processed on the same storage.\n   */\n  this.onReady_ = this.initialize_();\n  // This internal listener will always run before the external ones.\n  // This is needed to queue processing of this first before any getCurrentUser\n  // is called from external listeners.\n  this.manager_.addListener(\n      fireauth.storage.UserManager.getAuthUserKey_(\n          fireauth.authStorage.Persistence.LOCAL),\n      this.appId_,\n      goog.bind(this.switchToLocalOnExternalEvent_, this));\n};\n\n\n/**\n * Switches to local storage on external storage event. This will happen when\n * state is specified as local in an external tab while it is none or session\n * in the current one. If a user signs in in an external tab, the current window\n * should detect this, clear existing storage and switch to local storage.\n * @private\n */\nfireauth.storage.UserManager.prototype.switchToLocalOnExternalEvent_ =\n    function() {\n  var self = this;\n  var localKey = fireauth.storage.UserManager.getAuthUserKey_(\n      fireauth.authStorage.Persistence.LOCAL);\n  // Wait for any pending operation to finish first.\n  // Block next read/write operation until persistence is transitioned to\n  // local.\n  this.waitForReady_(function() {\n    return goog.Promise.resolve().then(function() {\n      // If current persistence is not already local.\n      if (self.currentAuthUserKey_ &&\n          self.currentAuthUserKey_.persistent !=\n          fireauth.authStorage.Persistence.LOCAL) {\n        // Check if new current user is available in local storage.\n        return self.manager_.get(localKey, self.appId_);\n      }\n      return null;\n    }).then(function(response) {\n      // Sign in on an external tab.\n      if (response) {\n        // Remove any existing non-local user.\n        return self.removeAllExcept_(\n            fireauth.authStorage.Persistence.LOCAL).then(function() {\n              // Set persistence to local.\n              self.currentAuthUserKey_ = localKey;\n            });\n      }\n    });\n  });\n};\n\n\n/**\n * Removes all states stored in all supported persistence types excluding the\n * specified one.\n * @param {?fireauth.authStorage.Persistence} persistence The type of storage\n *     persistence to switch to.\n * @return {!goog.Promise} The promise that resolves when all stored values are\n *     removed for types of storage excluding specified persistence. This helps\n *     ensure there is always one type of persistence at any time.\n * @private\n */\nfireauth.storage.UserManager.prototype.removeAllExcept_ =\n    function(persistence) {\n  var promises = [];\n  // Queue all promises to remove current user in any other persistence type.\n  for (var key in fireauth.authStorage.Persistence) {\n    // Skip specified persistence.\n    if (fireauth.authStorage.Persistence[key] !== persistence) {\n      var storageKey = fireauth.storage.UserManager.getAuthUserKey_(\n          fireauth.authStorage.Persistence[key]);\n      promises.push(this.manager_.remove(\n          /** @type {!fireauth.authStorage.Key} */ (storageKey),\n          this.appId_));\n    }\n  }\n  // Clear persistence key (only useful for initial load upon returning from a\n  // a redirect sign-in operation).\n  promises.push(this.manager_.remove(\n      fireauth.storage.UserManager.PERSISTENCE_KEY_,\n      this.appId_));\n  return goog.Promise.all(promises);\n};\n\n\n/**\n * Initializes the current persistence state. This will check the 3 supported\n * types. The first one that is found will be the current persistence. All\n * others will be cleared. If none is found we check PERSISTENCE_KEY_ which\n * when specified means that the operation is returning from a\n * signInWithRedirect call. This persistence will be applied.\n * Otherwise the default local persistence is used.\n * @return {!goog.Promise} A promise that resolves when the current persistence\n *     is resolved.\n * @private\n */\nfireauth.storage.UserManager.prototype.initialize_ = function() {\n  var self = this;\n  // Local key.\n  var localKey = fireauth.storage.UserManager.getAuthUserKey_(\n      fireauth.authStorage.Persistence.LOCAL);\n  // Session key.\n  var sessionKey = fireauth.storage.UserManager.getAuthUserKey_(\n      fireauth.authStorage.Persistence.SESSION);\n  // In memory key. This is unlikely to contain anything on load.\n  var inMemoryKey = fireauth.storage.UserManager.getAuthUserKey_(\n      fireauth.authStorage.Persistence.NONE);\n  // Migrate any old currentUser from localStorage to indexedDB.\n  // This keeps any user signed in without the need for reauthentication and\n  // minimizes risks of dangling Auth states.\n  return this.manager_.migrateFromLocalStorage(\n      localKey, this.appId_).then(function() {\n    // Check if state is stored in session storage.\n    return self.manager_.get(sessionKey, self.appId_);\n  }).then(function(response) {\n    if (response) {\n      // Session storage is being used.\n      return sessionKey;\n    } else {\n      // Session storage is empty. Check in memory storage.\n      return self.manager_.get(inMemoryKey, self.appId_)\n          .then(function(response) {\n            if (response) {\n              // In memory storage being used.\n              return inMemoryKey;\n            } else {\n              // Check local storage.\n              return self.manager_.get(localKey, self.appId_)\n                  .then(function(response) {\n                    if (response) {\n                      // Local storage being used.\n                      return localKey;\n                    } else {\n                      // Nothing found in any supported storage.\n                      // Check current user persistence in storage.\n                      return self.manager_.get(\n                          fireauth.storage.UserManager.PERSISTENCE_KEY_,\n                          self.appId_).then(function(persistence) {\n                            if (persistence) {\n                              // Sign in with redirect operation, apply this\n                              // persistence to any current user.\n                              return fireauth.storage.UserManager\n                                  .getAuthUserKey_(persistence);\n                            } else {\n                              // No persistence found, use the default.\n                              return localKey;\n                            }\n                          });\n                    }\n                  });\n            }\n          });\n    }\n  }).then(function(currentKey) {\n    // Set current key according to the persistence detected.\n    self.currentAuthUserKey_ = currentKey;\n    // Make sure only one state available. Clean up everything else.\n    return self.removeAllExcept_(currentKey.persistent);\n  }).thenCatch(function(error) {\n    // If an error occurs in the process and no current key detected, set to\n    // persistence value to default.\n    if (!self.currentAuthUserKey_) {\n      self.currentAuthUserKey_ = localKey;\n    }\n  });\n};\n\n\n/**\n * @const @private {string} The Auth current user storage identifier name.\n */\nfireauth.storage.UserManager.AUTH_USER_KEY_NAME_ = 'authUser';\n\n\n/**\n * @const @private{!fireauth.authStorage.Key} The Auth user storage persistence\n *     identifier. This is needed to remember the previous persistence state for\n *     sign-in with redirect.\n */\nfireauth.storage.UserManager.PERSISTENCE_KEY_ = {\n  name: 'persistence',\n  persistent: fireauth.authStorage.Persistence.SESSION\n};\n\n\n/**\n * Returns the Auth user key corresponding to the persistence type provided.\n * @param {!fireauth.authStorage.Persistence} persistence The key for the\n *     specified type of persistence.\n * @return {!fireauth.authStorage.Key} The corresponding Auth user storage\n *     identifier.\n * @private\n */\nfireauth.storage.UserManager.getAuthUserKey_ = function(persistence) {\n  return {\n    name: fireauth.storage.UserManager.AUTH_USER_KEY_NAME_,\n    persistent: persistence\n  };\n};\n\n\n/**\n * Sets the persistence to the specified type.\n * If an existing user already is in storage, it copies that value to the new\n * storage and clears all the others.\n * @param {!fireauth.authStorage.Persistence} persistence The type of storage\n *     persistence to switch to.\n * @return {!goog.Promise} A promise that resolves when persistence change is\n *     applied.\n */\nfireauth.storage.UserManager.prototype.setPersistence = function(persistence) {\n  var currentUser = null;\n  var self = this;\n  // Validate the persistence type provided. This will throw a synchronous error\n  // if invalid.\n  fireauth.authStorage.validatePersistenceArgument(persistence);\n  // Wait for turn in queue.\n  return this.waitForReady_(function() {\n    // If persistence hasn't changed, do nothing.\n    if (persistence != self.currentAuthUserKey_.persistent) {\n      // Persistence changed. Copy from current storage to new one.\n      return self.manager_.get(\n        /** @type {!fireauth.authStorage.Key} */ (self.currentAuthUserKey_),\n        self.appId_).then(function(result) {\n        // Save current user.\n        currentUser = result;\n        // Clear from current storage.\n        return self.removeAllExcept_(persistence);\n      }).then(function() {\n        // Update persistence key to the new one.\n        self.currentAuthUserKey_ =\n            fireauth.storage.UserManager.getAuthUserKey_(persistence);\n        // Copy current storage type to the new one.\n        if (currentUser) {\n          return self.manager_.set(\n              /** @type {!fireauth.authStorage.Key} */ (\n                  self.currentAuthUserKey_),\n              currentUser,\n              self.appId_);\n        }\n      });\n    }\n    // No change in persistence type.\n    return goog.Promise.resolve();\n  });\n};\n\n\n/**\n * Saves the current persistence type so it can be retrieved after a page\n * redirect. This is relevant for signInWithRedirect.\n * @return {!goog.Promise} Promise that resolve when current persistence is\n *     saved.\n */\nfireauth.storage.UserManager.prototype.savePersistenceForRedirect = function() {\n  var self = this;\n  return this.waitForReady_(function() {\n    // Save persistence to survive redirect.\n    return self.manager_.set(\n        fireauth.storage.UserManager.PERSISTENCE_KEY_,\n        self.currentAuthUserKey_.persistent,\n        self.appId_);\n  });\n};\n\n\n/**\n * Stores the current Auth user for the provided application ID.\n * @param {!fireauth.AuthUser} currentUser The app current Auth user to save.\n * @return {!goog.Promise<void>} A promise that resolves on success.\n */\nfireauth.storage.UserManager.prototype.setCurrentUser = function(currentUser) {\n  var self = this;\n  // Wait for any pending persistence change to be resolved.\n  return this.waitForReady_(function() {\n    return self.manager_.set(\n        /** @type {!fireauth.authStorage.Key} */ (self.currentAuthUserKey_),\n        currentUser.toPlainObject(),\n        self.appId_);\n  });\n};\n\n\n/**\n * Removes the stored current user for provided app ID.\n * @return {!goog.Promise<void>} A promise that resolves on success.\n */\nfireauth.storage.UserManager.prototype.removeCurrentUser = function() {\n  var self = this;\n  // Wait for any pending persistence change to be resolved.\n  return this.waitForReady_(function() {\n    return self.manager_.remove(\n        /** @type {!fireauth.authStorage.Key} */ (self.currentAuthUserKey_),\n        self.appId_);\n  });\n};\n\n\n/**\n * @param {?string=} authDomain The optional Auth domain to override if\n *     provided.\n * @param {?fireauth.constants.EmulatorSettings=} emulatorConfig The current\n *     emulator config to use in user requests.\n * @return {!goog.Promise<?fireauth.AuthUser>} A promise that resolves with\n *     the stored current user for the provided app ID.\n */\nfireauth.storage.UserManager.prototype.getCurrentUser = function(authDomain, emulatorConfig) {\n  var self = this;\n  // Wait for any pending persistence change to be resolved.\n  return this.waitForReady_(function() {\n    return self.manager_.get(\n        /** @type {!fireauth.authStorage.Key} */ (self.currentAuthUserKey_),\n        self.appId_).then(function(response) {\n          // If potential user saved, override Auth domain if authDomain is\n          // provided.\n          // This is useful in cases where on one page the developer initializes\n          // the Auth instance without authDomain and signs in user using\n          // headless methods. On another page, Auth is initialized with\n          // authDomain for the purpose of linking with a popup. The loaded user\n          // (stored without the authDomain) must have this field updated with\n          // the current authDomain.\n          if (response && authDomain) {\n            response['authDomain'] = authDomain;\n          }\n          if (response && emulatorConfig) {\n            response['emulatorConfig'] = emulatorConfig;\n          }\n          return fireauth.AuthUser.fromPlainObject(response || {});\n        });\n  });\n};\n\n\n/**\n * Serializes storage access operations especially since persistence\n * could be updated from one type to the other while read/write operations\n * occur.\n * @param {function():!goog.Promise<T>} cb The promise return callback to chain\n *     when pending operations are resolved.\n * @return {!goog.Promise<T>} The resulting promise that resolves when provided\n *     promise finally resolves.\n * @template T\n * @private\n */\nfireauth.storage.UserManager.prototype.waitForReady_ = function(cb) {\n  // Wait for any pending persistence change to be resolved before running\n  // storage related operation. Chain to onReady so next call will wait for\n  // this operation to resolve.\n  // While an error is unlikely, run callback even if it happens, otherwise\n  // no storage related event will be allowed to complete after an error.\n  this.onReady_ = this.onReady_.then(cb, cb);\n  return this.onReady_;\n};\n\n\n/**\n * Adds a listener to Auth current user change event for app ID provided.\n * @param {!function()} listener The listener to run on current user change\n *     event.\n */\nfireauth.storage.UserManager.prototype.addCurrentUserChangeListener =\n    function(listener) {\n  // When this is triggered, getCurrentUser is called, that will have to wait\n  // for switchToLocalOnExternalEvent_ to resolve which is ahead of it in the\n  // queue.\n  this.manager_.addListener(\n      fireauth.storage.UserManager.getAuthUserKey_(\n          fireauth.authStorage.Persistence.LOCAL),\n      this.appId_,\n      listener);\n};\n\n\n/**\n * Removes a listener to Auth current user change event for app ID provided.\n * @param {!function()} listener The listener to remove from current user change\n *     event changes.\n */\nfireauth.storage.UserManager.prototype.removeCurrentUserChangeListener =\n    function(listener) {\n  this.manager_.removeListener(\n      fireauth.storage.UserManager.getAuthUserKey_(\n          fireauth.authStorage.Persistence.LOCAL),\n      this.appId_,\n      listener);\n};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n /**\n * @fileoverview Defines the grecaptcha interface.\n */\n\ngoog.provide('fireauth.grecaptcha');\n\n\n/**\n * The reCAPTCHA interface for initializing and managing visible v2\n * reCAPTCHAs as well as invisible ones.\n * @interface\n */\nfireauth.grecaptcha = function() {};\n\n\n/**\n * Creates a new instance of the recaptcha client.\n *\n * @param {!Element|string} elementOrId Element or element ID for the\n *     placeholder to render the reCAPTCHA client.\n * @param {!Object} params Parameters for the recaptcha client.\n * @return {number} The client ID.\n */\nfireauth.grecaptcha.prototype.render = function(elementOrId, params) {};\n\n\n/**\n * Resets a client with the given ID.  If an ID is not provided, resets the\n * default client.\n *\n * @param {number=} id The ID of the recaptcha client.\n * @param {?Object=} params Parameters for the recaptcha client.\n */\nfireauth.grecaptcha.prototype.reset = function(id, params) {};\n\n\n/**\n * Gets the response for the client with the given ID.  If an ID is not\n * provided, gets the response for the default client.\n *\n * @param {number=} id The ID of the recaptcha client.\n * @return {?string}\n */\nfireauth.grecaptcha.prototype.getResponse = function(id) {};\n\n\n/**\n * Programmatically triggers the invisible reCAPTCHA.\n *\n * @param {number=} opt_id The ID of the recaptcha client. Defaults to the\n *     first widget created if unspecified.\n */\nfireauth.grecaptcha.prototype.execute = function(opt_id) {};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n /**\n * @fileoverview Defines the mock grecaptcha utilities used for development\n * testing.\n */\ngoog.provide('fireauth.GRecaptchaMockFactory');\ngoog.provide('fireauth.RecaptchaMock');\n\ngoog.require('fireauth.grecaptcha');\ngoog.require('fireauth.util');\ngoog.require('goog.dom');\ngoog.require('goog.events');\ngoog.require('goog.events.EventType');\n\n\n/**\n * The mock grecaptcha factory.\n * @constructor\n * @implements {fireauth.grecaptcha}\n */\nfireauth.GRecaptchaMockFactory = function() {\n  /**\n   * @const @private {!Object<string, !fireauth.RecaptchaMock>} The hash map\n   *     that stores the widget ID to mock reCAPTCHA instances.\n   */\n  this.map_ = {};\n  /**\n   * @private {number} The current widget ID counter, incremented each time\n   *     a new mock reCAPTCHA is created.\n   */\n  this.counter_ = fireauth.GRecaptchaMockFactory.START_INSTANCE_ID;\n};\n\n\n/**\n * @const {number} The start ID of the first created mock reCAPTCHA.\n */\nfireauth.GRecaptchaMockFactory.START_INSTANCE_ID = 1000000000000;\n\n\n/** @const {number} The reCAPTCHA expiration time in milliseconds. */\nfireauth.GRecaptchaMockFactory.EXPIRATION_TIME_MS = 60000;\n\n\n/** @const {number} The reCAPTCHA auto solving time in milliseconds. */\nfireauth.GRecaptchaMockFactory.SOLVE_TIME_MS = 500;\n\n\n/**\n * @private {?fireauth.GRecaptchaMockFactory} The singleton instance\n *     for grecaptcha mock object.\n */\nfireauth.GRecaptchaMockFactory.instance_ = null;\n\n\n/**\n * @return {!fireauth.GRecaptchaMockFactory} The singleton grecaptcha mock\n *     instance.\n */\nfireauth.GRecaptchaMockFactory.getInstance = function() {\n  // Check if there is an existing instance. Otherwise, create one and cache it.\n  if (!fireauth.GRecaptchaMockFactory.instance_) {\n    fireauth.GRecaptchaMockFactory.instance_ =\n        new fireauth.GRecaptchaMockFactory();\n  }\n  return fireauth.GRecaptchaMockFactory.instance_;\n};\n\n\n/**\n * Creates a new instance of the mock reCAPTCHA widget.\n *\n * @param {(!Element|string)} elementOrId Element or element ID for the\n *     placeholder to render the reCAPTCHA client.\n * @param {!Object} params Parameters for the reCAPTCHA client.\n * @return {number} The client ID.\n * @override\n */\nfireauth.GRecaptchaMockFactory.prototype.render =\n    function(elementOrId, params) {\n  this.map_[this.counter_.toString()] =\n      new fireauth.RecaptchaMock(elementOrId, params);\n  return this.counter_++;\n};\n\n\n/**\n * Resets a reCAPTCHA with the given ID. If an ID is not provided, resets the\n * first instance.\n *\n * @param {number=} opt_id The id of the reCAPTCHA client. Defaults to the first\n *     widget created if unspecified.\n * @override\n */\nfireauth.GRecaptchaMockFactory.prototype.reset = function(opt_id) {\n  var mock = this.getMock_(opt_id);\n  var id = this.getId_(opt_id);\n  if (mock && id) {\n    mock.delete();\n    delete this.map_[/** @type {string} */ (id)];\n  }\n};\n\n\n/**\n * Gets the response for the client with the given ID. If an ID is not\n * provided, gets the response for the default client.\n *\n * @param {number=} opt_id The ID of the reCAPTCHA widget. Defaults to the first\n *     widget created if unspecified.\n * @return {?string}\n * @override\n */\nfireauth.GRecaptchaMockFactory.prototype.getResponse = function(opt_id) {\n  var mock = this.getMock_(opt_id);\n  return mock ? mock.getResponse() : null;\n};\n\n\n/**\n * Programmatically triggers the invisible reCAPTCHA.\n *\n * @param {number=} opt_id The ID of the recaptcha client. Defaults to the first\n *     widget created if unspecified.\n * @override\n */\nfireauth.GRecaptchaMockFactory.prototype.execute = function(opt_id) {\n  var mock = this.getMock_(opt_id);\n  if (mock) {\n    mock.execute();\n  }\n};\n\n\n/**\n * @param {number=} opt_id The optional ID to lookup.\n * @return {?fireauth.RecaptchaMock} The corresponding reCAPTCHA mock if found.\n * @private\n */\nfireauth.GRecaptchaMockFactory.prototype.getMock_ = function(opt_id) {\n  var id = this.getId_(opt_id);\n  return id ? this.map_[id] || null : null;\n};\n\n\n/**\n * @param {number=} opt_id The optional ID to lookup.\n * @return {?string} The corresponding reCAPTCHA mock ID if found.\n * @private\n */\nfireauth.GRecaptchaMockFactory.prototype.getId_ = function(opt_id) {\n  var id = typeof opt_id === 'undefined' ?\n      fireauth.GRecaptchaMockFactory.START_INSTANCE_ID : opt_id;\n  return id ? id.toString() : null;\n};\n\n\n/**\n * Mock single reCAPTCHA instance.\n * @param {(!Element|string)} elementOrId Element or element ID for the\n *     placeholder to render the reCAPTCHA client.\n * @param {!Object} params Parameters for the reCAPTCHA client.\n * @constructor\n */\nfireauth.RecaptchaMock = function(elementOrId, params) {\n  /** @private {boolean} Whether the instance was deleted. */\n  this.deleted_ = false;\n  /** @const @private {!Object} The reCAPTCHA parameters. */\n  this.params_ = params;\n  /** @private {?string} The simulated response token if available. */\n  this.responseToken_ = null;\n  /**\n   * @private {?number} The timer ID for response callback/expiration callback\n   *     to trigger.\n   */\n  this.timerId_ = null;\n  /** @const @private {boolean} Whether the reCAPTCHA is visible or not. */\n  this.isVisible_ = this.params_['size'] !== 'invisible';\n  /**\n   * @const @private {?Element} The container or button trigger of the\n   *     reCAPTCHA.\n   */\n  this.element_ = goog.dom.getElement(elementOrId);\n  var self = this;\n  /** @private {function(?)} The on click handler for invisible reCAPTCHAs. */\n  this.onClickHandler_ = function(event) {\n    self.execute();\n  };\n  if (this.isVisible_) {\n    // For a visible reCAPTCHA, simulate reCAPTCHA continuously solved\n    // and then expired.\n    this.execute();\n  } else {\n    // Trigger on button click on when execute is directly called.\n    goog.events.listen(\n        this.element_,\n        goog.events.EventType.CLICK,\n        this.onClickHandler_);\n  }\n};\n\n\n/** @return {?string} The current reCAPTCHA response. */\nfireauth.RecaptchaMock.prototype.getResponse = function() {\n  this.checkIfDeleted_();\n  return this.responseToken_;\n};\n\n\n/** Starts the reCAPTCHA mock solving/expiration cycle. */\nfireauth.RecaptchaMock.prototype.execute = function() {\n  this.checkIfDeleted_();\n  var self = this;\n  if (this.timerId_) {\n    return;\n  }\n  // Wait for expected delay before auto-solving.\n  this.timerId_ = setTimeout(function() {\n    // Generate random string as reCAPTCHA response token.\n    self.responseToken_ = fireauth.util.generateRandomAlphaNumericString(50);\n    // Trigger developer's callbacks.\n    var callback = self.params_['callback'];\n    var expirationCallback = self.params_['expired-callback'];\n    if (callback) {\n      try {\n        callback(self.responseToken_);\n      } catch (e) {}\n    }\n    // Wait for token to expire before triggering expiration callback and\n    // resetting token response.\n    self.timerId_ = setTimeout(function() {\n      self.timerId_ = null;\n      self.responseToken_ = null;\n      if (expirationCallback) {\n        try {\n          expirationCallback();\n        } catch (e) {}\n      }\n      if (self.isVisible_) {\n        self.execute();\n      }\n    }, fireauth.GRecaptchaMockFactory.EXPIRATION_TIME_MS);\n  }, fireauth.GRecaptchaMockFactory.SOLVE_TIME_MS);\n};\n\n\n/** Deletes the current mock instance. */\nfireauth.RecaptchaMock.prototype.delete = function() {\n  this.checkIfDeleted_();\n  this.deleted_ = true;\n  clearTimeout(this.timerId_);\n  this.timerId_ = null;\n  goog.events.unlisten(\n      this.element_,\n      goog.events.EventType.CLICK,\n      this.onClickHandler_);\n};\n\n\n/**\n * Checks whether the instance was deleted.\n * @private\n */\nfireauth.RecaptchaMock.prototype.checkIfDeleted_ = function() {\n  // This error should never be thrown externally.\n  // GRecaptchaMockFactory will ensure that a deleted instance is removed.\n  if (this.deleted_) {\n    throw new Error('reCAPTCHA mock was already deleted!');\n  }\n};\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n \n/**\n * @fileoverview Defines the MultiFactorGenerators used to generate\n * MultiFactorAssertions. This currently covers only PhoneMultiFactorGenerator.\n */\n\ngoog.provide('fireauth.PhoneMultiFactorGenerator');\n\ngoog.require('fireauth.PhoneMultiFactorAssertion');\ngoog.require('fireauth.constants');\ngoog.require('fireauth.object');\n\n\n/**\n * Defines the multi-factor generator for PhoneMultiFactorAssertions.\n * This class acts only as a namespace and defines some static methods and\n * properties.\n * @constructor @struct @final\n */\nfireauth.PhoneMultiFactorGenerator = function() {};\nfireauth.object.setReadonlyProperty(fireauth.PhoneMultiFactorGenerator,\n    'FACTOR_ID', fireauth.constants.SecondFactorType.PHONE);\n\n\n/**\n * Initializes a `PhoneMultiFactorAssertion` given a `PhoneAuthCredential`.\n * @param {!fireauth.PhoneAuthCredential} phoneAuthCredential\n * @return {!fireauth.PhoneMultiFactorAssertion} The `MultiFactorAssertion`\n *     corresponding to the provided `PhoneAuthCredential`.\n */\nfireauth.PhoneMultiFactorGenerator.assertion = function(phoneAuthCredential) {\n  return new fireauth.PhoneMultiFactorAssertion(phoneAuthCredential);\n};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n /**\n * @fileoverview Defines the RecaptchaLoader implementation used to mock loading\n * of grecaptcha dependencies.\n */\n\ngoog.provide('fireauth.RecaptchaMockLoader');\n\ngoog.require('fireauth.GRecaptchaMockFactory');\ngoog.require('fireauth.RecaptchaLoader');\ngoog.require('goog.Promise');\n\n\n/**\n * Defines a mock reCAPTCHA loader by implementing the fireauth.RecaptchaLoader\n * interface.\n * @constructor\n * @implements {fireauth.RecaptchaLoader}\n */\nfireauth.RecaptchaMockLoader = function() {};\n\n\n/**\n * Loads the grecaptcha mock library if it is not loaded and returns a promise\n * that resolves on success. If the right conditions are available, will reload\n * the dependencies for a specified language code.\n * @param {?string} hl The reCAPTCHA language code.\n * @return {!goog.Promise<!fireauth.grecaptcha>} A promise that resolves when\n *     grecaptcha is loaded.\n * @override\n */\nfireauth.RecaptchaMockLoader.prototype.loadRecaptchaDeps =\n    function(hl) {\n  return goog.Promise.resolve(\n  \t/** @type {!fireauth.grecaptcha} */ (fireauth.GRecaptchaMockFactory.getInstance()));\n};\n\n\n/**\n * Decrements the reCAPTCHA instance counter.\n * @override\n */\nfireauth.RecaptchaMockLoader.prototype.clearSingleRecaptcha =\n    function() {};\n\n\n/**\n * @private {?fireauth.RecaptchaMockLoader} The singleton instance\n *     for the mock reCAPTCHA dependency loader.\n */\nfireauth.RecaptchaMockLoader.instance_ = null;\n\n\n/**\n * @return {!fireauth.RecaptchaMockLoader} The singleton mock reCAPTCHA\n *     dependency loader instance.\n */\nfireauth.RecaptchaMockLoader.getInstance = function() {\n  // Check if there is an existing instance. Otherwise create one and cache it.\n  if (!fireauth.RecaptchaMockLoader.instance_) {\n    fireauth.RecaptchaMockLoader.instance_ =\n        new fireauth.RecaptchaMockLoader();\n  }\n  return fireauth.RecaptchaMockLoader.instance_;\n};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n /**\n * @fileoverview Defines the RecaptchaLoader implementation used to load all\n * the grecaptcha dependencies.\n */\n\ngoog.provide('fireauth.RecaptchaRealLoader');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.RecaptchaLoader');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.util');\ngoog.require('goog.Promise');\ngoog.require('goog.html.TrustedResourceUrl');\ngoog.require('goog.net.jsloader');\ngoog.require('goog.string.Const');\n\n\n/**\n * Utility to help load reCAPTCHA dependencies for specified languages.\n * @constructor\n * @implements {fireauth.RecaptchaLoader}\n */\nfireauth.RecaptchaRealLoader = function() {\n  /**\n   * @private {number} The reCAPTCHA instance counter. This is used to track the\n   *     number of reCAPTCHAs rendered on the page. This is needed to allow\n   *     localization of the reCAPTCHA. Localization is applied by loading the\n   *     grecaptcha SDK with the hl field provided. However, this will break\n   *     existing reCAPTCHAs. So we should only support i18n when there are no\n   *     other widgets rendered on this screen. If the developer is already\n   *     using reCAPTCHA in another context, we will disable localization so we\n   *     don't accidentally break existing reCAPTCHA widgets.\n   */\n  this.counter_ = goog.global['grecaptcha'] ? Infinity : 0;\n  /** @private {?string} The current reCAPTCHA language code. */\n  this.hl_ = null;\n  /** @const @private {string} The reCAPTCHA callback name. */\n  this.cbName_ = '__rcb' + Math.floor(Math.random() * 1000000).toString();\n};\n\n\n/** @private @const {!goog.string.Const} The reCAPTCHA javascript source URL. */\nfireauth.RecaptchaRealLoader.RECAPTCHA_SRC_ = goog.string.Const.from(\n    'https://www.google.com/recaptcha/api.js?onload=%{onload}&render=explicit' +\n    '&hl=%{hl}');\n\n\n/**\n * The default timeout delay (units in milliseconds) for requests loading\n * the external reCAPTCHA dependencies.\n * @const {!fireauth.util.Delay}\n * @private\n */\nfireauth.RecaptchaRealLoader.DEFAULT_DEPENDENCY_TIMEOUT_ =\n    new fireauth.util.Delay(30000, 60000);\n\n\n/**\n * Loads the grecaptcha client library if it is not loaded and returns a promise\n * that resolves on success. If the right conditions are available, will reload\n * the dependencies for a specified language code.\n * @param {?string} hl The reCAPTCHA language code.\n * @return {!goog.Promise<!fireauth.grecaptcha>} A promise that resolves when\n *     grecaptcha is loaded.\n * @override\n */\nfireauth.RecaptchaRealLoader.prototype.loadRecaptchaDeps =\n    function(hl) {\n  var self = this;\n  return new goog.Promise(function(resolve, reject) {\n    var timer = setTimeout(\n        function() {\n          reject(new fireauth.AuthError(\n              fireauth.authenum.Error.NETWORK_REQUEST_FAILED));\n        },\n        fireauth.RecaptchaRealLoader.DEFAULT_DEPENDENCY_TIMEOUT_\n            .get()\n    );\n    // Load grecaptcha SDK if not already loaded or language changed since last\n    // load and no other rendered reCAPTCHA is visible,\n    if (!goog.global['grecaptcha'] || (hl !== self.hl_ && !self.counter_)) {\n      // reCAPTCHA saves the onload function and applies it on subsequent\n      // reloads. This means that the callback name has to remain the same.\n      goog.global[self.cbName_] = function() {\n        if (!goog.global['grecaptcha']) {\n          clearTimeout(timer);\n          // This should not happen.\n          reject(new fireauth.AuthError(\n              fireauth.authenum.Error.INTERNAL_ERROR));\n        } else {\n          // Update the current language code.\n          self.hl_ = hl;\n          var render = goog.global['grecaptcha']['render'];\n          // Wrap grecaptcha.render to keep track of rendered grecaptcha. This\n          // helps detect if the developer rendered a non\n          // firebase.auth.RecaptchaVerifier reCAPTCHA.\n          goog.global['grecaptcha']['render'] =\n              function(container, parameters) {\n            var widgetId = render(container, parameters);\n            // Increment only after render succeeds, in case an error is thrown\n            // during rendering.\n            self.counter_++;\n            return widgetId;\n          };\n          clearTimeout(timer);\n          resolve(goog.global['grecaptcha']);\n        }\n        delete goog.global[self.cbName_];\n      };\n      // Construct reCAPTCHA URL and on load, run the temporary function.\n      var url = goog.html.TrustedResourceUrl.format(\n          fireauth.RecaptchaRealLoader.RECAPTCHA_SRC_,\n          {'onload': self.cbName_, 'hl': hl || ''});\n      // TODO: eventually, replace all dependencies on goog.net.jsloader.\n      goog.Promise.resolve(goog.net.jsloader.safeLoad(url))\n          .thenCatch(function(error) {\n            clearTimeout(timer);\n            // In case library fails to load, typically due to a network error,\n            // reset cached loader to null to force a refresh on a retrial.\n            reject(new fireauth.AuthError(\n                fireauth.authenum.Error.INTERNAL_ERROR,\n                'Unable to load external reCAPTCHA dependencies!'));\n          });\n    } else {\n      clearTimeout(timer);\n      resolve(goog.global['grecaptcha']);\n    }\n  });\n};\n\n\n/**\n * Decrements the reCAPTCHA instance counter.\n * @override\n */\nfireauth.RecaptchaRealLoader.prototype.clearSingleRecaptcha =\n    function() {\n  this.counter_--;\n};\n\n\n/**\n * @private {?fireauth.RecaptchaRealLoader} The singleton instance\n *     for reCAPTCHA dependency loader.\n */\nfireauth.RecaptchaRealLoader.instance_ = null;\n\n\n/**\n * @return {!fireauth.RecaptchaRealLoader} The singleton reCAPTCHA\n *     dependency loader instance.\n */\nfireauth.RecaptchaRealLoader.getInstance = function() {\n  // Check if there is an existing instance. Otherwise create one and cache it.\n  if (!fireauth.RecaptchaRealLoader.instance_) {\n    fireauth.RecaptchaRealLoader.instance_ =\n        new fireauth.RecaptchaRealLoader();\n  }\n  return fireauth.RecaptchaRealLoader.instance_;\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Defines the reCAPTCHA app verifier and its base class. The\n * former is currently used for web phone authentication whereas the latter is\n * used for the mobile app verification web fallback.\n */\ngoog.provide('fireauth.BaseRecaptchaVerifier');\ngoog.provide('fireauth.RecaptchaVerifier');\n\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.RecaptchaMockLoader');\ngoog.require('fireauth.RecaptchaRealLoader');\ngoog.require('fireauth.RpcHandler');\ngoog.require('fireauth.authenum.Error');\ngoog.require('fireauth.constants');\ngoog.require('fireauth.object');\ngoog.require('fireauth.util');\ngoog.require('goog.Promise');\ngoog.require('goog.array');\ngoog.require('goog.dom');\n\n\n/**\n * Creates the firebase base reCAPTCHA app verifier independent of Firebase\n * App or Auth instances.\n *\n * @param {string} apiKey The API key used to initialize the RPC handler for\n *     querying the Auth backend.\n * @param {!Element|string} container The reCAPTCHA container parameter. This\n *     has different meaning depending on whether the reCAPTCHA is hidden or\n *     visible.\n * @param {?Object=} opt_parameters The optional reCAPTCHA parameters.\n * @param {?(function():?string)=} opt_getLanguageCode The language code getter\n *     function.\n * @param {?string=} opt_clientVersion The optional client version to append to\n *     RPC header.\n * @param {?Object=} opt_rpcHandlerConfig The optional RPC handler\n *     configuration, typically passed when different Auth endpoints are to be\n *     used.\n * @param {boolean=} opt_isTestingMode Whether the reCAPTCHA is to be rendered\n *     in testing mode.\n * @constructor\n */\nfireauth.BaseRecaptchaVerifier = function(apiKey, container, opt_parameters,\n    opt_getLanguageCode, opt_clientVersion, opt_rpcHandlerConfig,\n    opt_isTestingMode) {\n  // Set the type readonly property needed for full implementation of the\n  // firebase.auth.ApplicationVerifier interface.\n  fireauth.object.setReadonlyProperty(this, 'type', 'recaptcha');\n  /**\n   * @private {?goog.Promise<void>} The cached reCAPTCHA ready response. This is\n   *     null until the first time it is triggered or when an error occurs in\n   *     getting ready.\n   */\n  this.cachedReadyPromise_ = null;\n  /** @private {?number} The reCAPTCHA widget ID. Null when not rendered. */\n  this.widgetId_ = null;\n  /** @private {boolean} Whether the instance is already destroyed. */\n  this.destroyed_ = false;\n  /** @private {!Element|string} The reCAPTCHA container. */\n  this.container_ = container;\n  /**\n   * @private {?fireauth.grecaptcha} The reCAPTCHA client library namespace.\n   */\n  this.grecaptcha_ = null;\n  /**\n   * @const @private {!fireauth.RecaptchaLoader} The grecaptcha loader.\n   */\n  this.recaptchaLoader_ = !!opt_isTestingMode ?\n      fireauth.RecaptchaMockLoader.getInstance() :\n      fireauth.RecaptchaRealLoader.getInstance();\n  // If no parameters passed, use default settings.\n  // Currently, visible recaptcha is the default setting as invisible reCAPTCHA\n  // is not yet supported by the backend.\n  /** @private {!Object} The reCAPTCHA parameters. */\n  this.parameters_ = opt_parameters || {\n    'theme': 'light',\n    'type': 'image'\n  };\n  /** @private {!Array<!goog.Promise<*>|!goog.Promise<void>>} List of\n   *      pending promises. */\n  this.pendingPromises_ = [];\n  if (this.parameters_[fireauth.BaseRecaptchaVerifier.ParamName.SITEKEY]) {\n    // sitekey should not be provided.\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.ARGUMENT_ERROR,\n        'sitekey should not be provided for reCAPTCHA as one is ' +\n        'automatically provisioned for the current project.');\n  }\n  /** @private {boolean} Whether the reCAPTCHA is invisible or not. */\n  this.isInvisible_ =\n      this.parameters_[fireauth.BaseRecaptchaVerifier.ParamName.SIZE] ===\n      'invisible';\n  // Check if DOM is supported.\n  if (!fireauth.util.isDOMSupported()) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.OPERATION_NOT_SUPPORTED,\n        'RecaptchaVerifier is only supported in a browser HTTP/HTTPS ' +\n        'environment with DOM support.');\n  }\n  // reCAPTCHA container must be valid and if visible, not empty.\n  // An invisible reCAPTCHA will not render in its container. That container\n  // will execute the reCAPTCHA when it is clicked.\n  if (!goog.dom.getElement(container) ||\n      (!this.isInvisible_ && goog.dom.getElement(container).hasChildNodes())) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.ARGUMENT_ERROR,\n        'reCAPTCHA container is either not found or already contains inner ' +\n        'elements!');\n  }\n  /**\n   * @private {!fireauth.RpcHandler} The RPC handler for querying the auth\n   *     backend.\n   */\n  this.rpcHandler_ = new fireauth.RpcHandler(\n      apiKey,\n      opt_rpcHandlerConfig || null,\n      opt_clientVersion || null);\n  /**\n   * @private {function():?string} Current language code getter.\n   */\n  this.getLanguageCode_ = opt_getLanguageCode || function() {return null;};\n  var self = this;\n  /**\n   * @private {!Array<function(?string)>} The token change listeners.\n   */\n  this.tokenListeners_ = [];\n  // Wrap token callback.\n  var existingCallback =\n      this.parameters_[fireauth.BaseRecaptchaVerifier.ParamName.CALLBACK];\n  this.parameters_[fireauth.BaseRecaptchaVerifier.ParamName.CALLBACK] =\n      function(response) {\n    // Dispatch internal event for the token response.\n    self.dispatchEvent_(response);\n    if (typeof existingCallback === 'function') {\n      existingCallback(response);\n    } else if (typeof existingCallback === 'string') {\n      // Check if the provided callback is a global function name.\n      var cb = fireauth.util.getObjectRef(existingCallback, goog.global);\n      if (typeof cb === 'function') {\n        // If so, trigger it.\n        cb(response);\n      }\n    }\n  };\n  // Wrap expired token callback.\n  var existingExpiredCallback = this.parameters_[\n    fireauth.BaseRecaptchaVerifier.ParamName.EXPIRED_CALLBACK];\n  this.parameters_[fireauth.BaseRecaptchaVerifier.ParamName.EXPIRED_CALLBACK] =\n      function() {\n    // Dispatch internal event for the token expiration.\n    self.dispatchEvent_(null);\n    if (typeof existingExpiredCallback === 'function') {\n      existingExpiredCallback();\n    } else if (typeof existingExpiredCallback === 'string') {\n      // Check if the provided expired callback is a global function name.\n      var cb = fireauth.util.getObjectRef(existingExpiredCallback, goog.global);\n      if (typeof cb === 'function') {\n        // If so, trigger it.\n        cb();\n      }\n    }\n  };\n};\n\n\n/**\n * grecaptcha parameter names.\n * @enum {string}\n */\nfireauth.BaseRecaptchaVerifier.ParamName = {\n  CALLBACK: 'callback',\n  EXPIRED_CALLBACK: 'expired-callback',\n  SITEKEY: 'sitekey',\n  SIZE: 'size'\n};\n\n\n/**\n * Dispatches the token change event to all subscribed listeners.\n * @param {?string} token The current detected token, null for none.\n * @private\n */\nfireauth.BaseRecaptchaVerifier.prototype.dispatchEvent_ = function(token) {\n  for (var i = 0; i < this.tokenListeners_.length; i++) {\n    try {\n      this.tokenListeners_[i](token);\n    } catch (e) {\n      // If any handler fails, ignore and run next handler.\n    }\n  }\n};\n\n\n/**\n * Add a reCAPTCHA token change listener.\n * @param {function(?string)} listener The token listener to add.\n * @private\n */\nfireauth.BaseRecaptchaVerifier.prototype.addTokenChangeListener_ =\n    function(listener) {\n  this.tokenListeners_.push(listener);\n};\n\n\n/**\n * Remove a reCAPTCHA token change listener.\n * @param {function(?string)} listener The token listener to remove.\n * @private\n */\nfireauth.BaseRecaptchaVerifier.prototype.removeTokenChangeListener_ =\n    function(listener) {\n  goog.array.removeAllIf(this.tokenListeners_, function(ele) {\n    return ele == listener;\n  });\n};\n\n\n/**\n * Takes in a pending promise, saves it and adds a clean up callback which\n * forgets the pending promise after it is fulfilled and echoes the promise\n * back.\n * @param {!goog.Promise<*, *>|!goog.Promise<void>} p The pending promise.\n * @return {!goog.Promise<*, *>|!goog.Promise<void>}\n * @private\n */\nfireauth.BaseRecaptchaVerifier.prototype.registerPendingPromise_ = function(p) {\n  var self = this;\n  // Save created promise in pending list.\n  this.pendingPromises_.push(p);\n  p.thenAlways(function() {\n    // When fulfilled, remove from pending list.\n    goog.array.remove(self.pendingPromises_, p);\n  });\n  // Return the promise.\n  return p;\n};\n\n\n/** @return {boolean} Whether verifier instance has pending promises. */\nfireauth.BaseRecaptchaVerifier.prototype.hasPendingPromises = function() {\n  return this.pendingPromises_.length != 0;\n};\n\n\n/**\n * Gets the current RecaptchaVerifier in a ready state for rendering by first\n * checking that the environment supports a reCAPTCHA, loading reCAPTCHA\n * dependencies if not already available and then getting the Firebase project's\n * provisioned reCAPTCHA configuration.\n * @return {!goog.Promise<void>} The promise that resolves when recaptcha\n *     is ready for rendering.\n * @private\n */\nfireauth.BaseRecaptchaVerifier.prototype.isReady_ = function() {\n  var self = this;\n  // If previously called, return the cached response.\n  if (this.cachedReadyPromise_) {\n    return this.cachedReadyPromise_;\n  }\n  this.cachedReadyPromise_ = this.registerPendingPromise_(goog.Promise.resolve()\n      .then(function() {\n        // Verify environment first.\n        // Fail quickly from a worker environment or non-HTTP/HTTPS environment.\n        if (fireauth.util.isHttpOrHttps() && !fireauth.util.isWorker()) {\n          // Wait for DOM to be ready as this feature depends on that.\n          return fireauth.util.onDomReady();\n        } else {\n          throw new fireauth.AuthError(\n              fireauth.authenum.Error.OPERATION_NOT_SUPPORTED,\n              'RecaptchaVerifier is only supported in a browser HTTP/HTTPS ' +\n              'environment.');\n        }\n      })\n      .then(function() {\n        // Load external reCAPTCHA dependencies if not already there, taking\n        // into account the current language code.\n        return self.recaptchaLoader_.loadRecaptchaDeps(self.getLanguageCode_());\n      })\n      .then(function(grecaptcha) {\n        self.grecaptcha_ = grecaptcha;\n        // Load Firebase project's reCAPTCHA configuration.\n        return self.rpcHandler_.getRecaptchaParam();\n      })\n      .then(function(result) {\n        // Update the reCAPTCHA parameters.\n        self.parameters_[fireauth.BaseRecaptchaVerifier.ParamName.SITEKEY] =\n            result[fireauth.RpcHandler.AuthServerField.RECAPTCHA_SITE_KEY];\n      }).thenCatch(function(error) {\n        // Anytime an error occurs, reset the cached ready promise to rerun on\n        // retrial.\n        self.cachedReadyPromise_ = null;\n        // Rethrow the error.\n        throw error;\n      }));\n  // Return the cached/pending ready promise.\n  return this.cachedReadyPromise_;\n};\n\n/**\n * Renders the reCAPTCHA and returns the allocated widget ID.\n * @return {!goog.Promise<number>} The promise that resolves with the reCAPTCHA\n *     widget ID when it is rendered.\n */\nfireauth.BaseRecaptchaVerifier.prototype.render = function() {\n  this.checkIfDestroyed_();\n  var self = this;\n  // Get reCAPTCHA ready.\n  return this.registerPendingPromise_(this.isReady_().then(function() {\n    if (self.widgetId_ === null) {\n      // For a visible reCAPTCHA, embed in a wrapper DIV container to allow\n      // re-rendering in the same developer provided container.\n      var container = self.container_;\n      if (!self.isInvisible_) {\n        // Get outer container (the developer provided container).\n        var outerContainer = goog.dom.getElement(container);\n        // Create wrapper temp DIV container.\n        container = goog.dom.createDom(goog.dom.TagName.DIV);\n        // Add temp DIV to outer container.\n        outerContainer.appendChild(container);\n      }\n      // If not initialized, initialize reCAPTCHA and return its widget ID.\n      self.widgetId_ = self.grecaptcha_.render(container, self.parameters_);\n    }\n    return self.widgetId_;\n  }));\n};\n\n\n/**\n * Gets the reCAPTCHA ready and waits for the reCAPTCHA token to be available\n * before resolving the promise returned.\n * @return {!goog.Promise<string>} The promise that resolves with the reCAPTCHA\n *     token when reCAPTCHA challenge is solved.\n */\nfireauth.BaseRecaptchaVerifier.prototype.verify = function() {\n  // Fail if reCAPTCHA is already destroyed.\n  this.checkIfDestroyed_();\n  var self = this;\n  // Render reCAPTCHA.\n  return this.registerPendingPromise_(this.render().then(function(widgetId) {\n    return new goog.Promise(function(resolve, reject) {\n      // Get current reCAPTCHA token.\n      var recaptchaToken = self.grecaptcha_.getResponse(widgetId);\n      if (recaptchaToken) {\n        // Unexpired token already available. Resolve pending promise with that\n        // token.\n        resolve(recaptchaToken);\n      } else {\n        // No token available. Listen to token change.\n        var cb = function(token) {\n          if (!token) {\n            // Ignore token expirations.\n            return;\n          }\n          // Remove temporary token change listener.\n          self.removeTokenChangeListener_(cb);\n          // Resolve with new token.\n          resolve(token);\n        };\n        // Add temporary token change listener.\n        self.addTokenChangeListener_(cb);\n        if (self.isInvisible_) {\n          // Execute invisible reCAPTCHA to force a challenge.\n          // This should do nothing if already triggered either by developer or\n          // by a button click.\n          self.grecaptcha_.execute(/** @type {number} */ (self.widgetId_));\n        }\n      }\n    });\n  }));\n};\n\n\n/**\n * Resets the reCAPTCHA widget.\n */\nfireauth.BaseRecaptchaVerifier.prototype.reset = function() {\n  this.checkIfDestroyed_();\n  if (this.widgetId_ !== null) {\n    this.grecaptcha_.reset(this.widgetId_);\n  }\n};\n\n\n/**\n * Throws an error if the reCAPTCHA verifier is already cleared.\n * @private\n */\nfireauth.BaseRecaptchaVerifier.prototype.checkIfDestroyed_ = function() {\n  if (this.destroyed_) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.INTERNAL_ERROR,\n        'RecaptchaVerifier instance has been destroyed.');\n  }\n};\n\n\n/**\n * Removes the reCAPTCHA from the DOM.\n */\nfireauth.BaseRecaptchaVerifier.prototype.clear = function() {\n  this.checkIfDestroyed_();\n  this.destroyed_ = true;\n  // Decrement reCAPTCHA instance counter.\n  this.recaptchaLoader_.clearSingleRecaptcha();\n  // Cancel all pending promises.\n  for (var i = 0; i < this.pendingPromises_.length; i++) {\n    this.pendingPromises_[i].cancel(\n        'RecaptchaVerifier instance has been destroyed.');\n  }\n  if (!this.isInvisible_) {\n    goog.dom.removeChildren(goog.dom.getElement(this.container_));\n  }\n};\n\n\n/**\n * Creates the Firebase reCAPTCHA app verifier, publicly available, for the\n * Firebase app provided, used for web phone authentication.\n * This is a subclass of fireauth.BaseRecaptchaVerifier.\n *\n * @param {!Element|string} container The reCAPTCHA container parameter. This\n *     has different meaning depending on whether the reCAPTCHA is hidden or\n *     visible.\n * @param {?Object=} opt_parameters The optional reCAPTCHA parameters.\n * @param {?firebase.app.App=} opt_app The corresponding Firebase app.\n * @constructor\n * @extends {fireauth.BaseRecaptchaVerifier}\n */\nfireauth.RecaptchaVerifier = function(container, opt_parameters, opt_app) {\n  var isTestingMode = false;\n  var apiKey;\n  try {\n    /** @private {!firebase.app.App} The corresponding Firebase app instance. */\n    this.app_ = opt_app || firebase.app();\n  } catch (error) {\n    throw new fireauth.AuthError(\n        fireauth.authenum.Error.ARGUMENT_ERROR,\n        'No firebase.app.App instance is currently initialized.');\n  }\n  // API key is required for web client RPC calls.\n  if (this.app_.options && this.app_.options['apiKey']) {\n    apiKey = this.app_.options['apiKey'];\n  } else {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INVALID_API_KEY);\n  }\n  var self = this;\n  // Construct the language code getter based on the underlying Auth instance.\n  var getLanguageCode = function() {\n    var languageCode;\n    // Get the latest language setting.\n    // reCAPTCHA does not support updating the language of an already\n    // rendered reCAPTCHA. Reloading the SDK with the new hl will break\n    // the existing rendered localized reCAPTCHA. We will need to\n    // document that a new fireauth.BaseRecaptchaVerifier instance needs\n    // to be instantiated after the language is updated. Otherwise, the\n    // old language code will remain active on the existing instance.\n    try {\n      languageCode = self.app_['auth']().getLanguageCode();\n    } catch (e) {\n      languageCode = null;\n    }\n    return languageCode;\n  };\n  // Get the framework version from Auth instance.\n  var frameworkVersion = null;\n  try {\n    frameworkVersion = this.app_['auth']().getFramework();\n  } catch (e) {\n    // Do nothing.\n  }\n  try {\n    isTestingMode =\n        this.app_['auth']()['settings']['appVerificationDisabledForTesting'];\n  } catch (e) {\n    // Do nothing.\n  }\n  // Get the client version based on the Firebase JS version.\n  var clientFullVersion = firebase.SDK_VERSION ?\n      fireauth.util.getClientVersion(\n          fireauth.util.ClientImplementation.JSCORE, firebase.SDK_VERSION,\n          frameworkVersion) :\n      null;\n  // Call the superclass constructor with the computed API key, reCAPTCHA\n  // container, optional parameters, language code getter, Firebase JS client\n  // version and the current client configuration endpoints.\n  fireauth.RecaptchaVerifier.base(this, 'constructor', apiKey,\n      container, opt_parameters, getLanguageCode, clientFullVersion,\n      fireauth.constants.getEndpointConfig(fireauth.constants.clientEndpoint),\n      isTestingMode);\n};\ngoog.inherits(fireauth.RecaptchaVerifier, fireauth.BaseRecaptchaVerifier);\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Provides function argument validation for third-party calls\n * that cannot be validated with Closure compiler.\n */\n\ngoog.provide('fireauth.args');\ngoog.provide('fireauth.args.Argument');\n\ngoog.require('fireauth.Auth');\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.AuthUser');\ngoog.require('fireauth.MultiFactorSession');\ngoog.require('fireauth.authenum.Error');\n\n\n/**\n * Represents an argument to a function. Fields:\n * <ul>\n * <li> name: A label for the argument. For example, the names of the arguments\n *      to a signIn() function might be \"email\" and \"password\".\n * <li> typeLabel: A label for the expected type of the argument, starting with\n *      an article, for example, \"an object\" or \"a valid credential\".\n * <li> optional: Whether or not this argument is optional. Optional arguments\n *      cannot come after non-optional arguments in the input to validate().\n * <li> validator: A function that takes the passed value of this argument\n *      and returns whether the value is valid or not.\n * </ul>\n * @typedef {{\n *   name: string,\n *   typeLabel: string,\n *   optional: boolean,\n *   validator: function (*) : boolean,\n * }}\n */\nfireauth.args.Argument;\n\n\n/**\n * Validates the arguments to a method call and throws an error if invalid. This\n * can be used to validate external calls where the Closure compiler cannot\n * detect errors.\n *\n * Example usage:\n * function greet(recipient, opt_useFormalLanguage) {\n *   fireauth.args.validate('greet', [\n *     fireauth.args.string('recipient'),\n *     fireauth.args.bool('opt_useFormalLanguage', true)\n *   ], arguments);\n *   if (opt_useFormalLanguage) {\n *     console.log('Good day, ' + recipient + '.');\n *   } else {\n *     console.log('Wassup, ' + recipient + '?');\n *   }\n * }\n * greet('Mr. Manager', true); // Prints 'Good day, Mr. Manager.'\n * greet('Billy Bob'); // Prints 'Wassup, Billy Bob?'\n * greet(133); // Throws 'greet failed: First argument \"recipient\" must be a\n *             // valid string.'\n * greet(); // Throws 'greet failed: Expected 1-2 arguments but got 0.'\n * greet('Mr. Manager', true, 'ohno'); // Throws 'greet failed: Expected 1-2\n *                                     // arguments but got 3.'\n *\n * This can also be used to validate setters by passing an additional true\n * argument to fireauth.args.validate. This modifies the error message to be\n * relevant for that setter.\n *\n * @param {string} apiName The name of the method being called, to display in\n *     the error message for debugging purposes.\n * @param {!Array<!fireauth.args.Argument>} expected The expected arguments.\n * @param {!IArrayLike} actual The arguments object of the function whose\n *     parameters we want to validate.\n * @param {boolean=} opt_isSetter Whether the function is a setter which takes\n *     a single argument.\n */\nfireauth.args.validate = function(apiName, expected, actual, opt_isSetter) {\n  // Convert the arguments object into a real array.\n  var actualAsArray = Array.prototype.slice.call(actual);\n  var errorMessage = fireauth.args.validateAndGetMessage_(\n      expected, actualAsArray, opt_isSetter);\n  if (errorMessage) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.ARGUMENT_ERROR,\n        apiName + ' failed: ' + errorMessage);\n  }\n};\n\n\n/**\n * @param {!Array<!fireauth.args.Argument>} expected\n * @param {!Array<*>} actual\n * @param {boolean=} opt_isSetter Whether the function is a setter which takes\n *     a single argument.\n * @return {?string} The error message if there is an error, or otherwise\n *     null.\n * @private\n */\nfireauth.args.validateAndGetMessage_ =\n    function(expected, actual, opt_isSetter) {\n  var minNumArgs = fireauth.args.calcNumRequiredArgs_(expected);\n  var maxNumArgs = expected.length;\n  if (actual.length < minNumArgs || maxNumArgs < actual.length) {\n    return fireauth.args.makeLengthError_(minNumArgs, maxNumArgs,\n        actual.length);\n  }\n\n  for (var i = 0; i < actual.length; i++) {\n    // Argument is optional and undefined is explicitly passed.\n    var optionalUndefined = expected[i].optional && actual[i] === undefined;\n    // Check if invalid argument and the argument is not optional with undefined\n    // passed.\n    if (!expected[i].validator(actual[i]) && !optionalUndefined) {\n      return fireauth.args.makeErrorAtPosition_(i, expected[i], opt_isSetter);\n    }\n  }\n\n  return null;\n};\n\n\n/**\n * @param {!Array<!fireauth.args.Argument>} expected\n * @return {number} The number of required arguments.\n * @private\n */\nfireauth.args.calcNumRequiredArgs_ = function(expected) {\n  var numRequiredArgs = 0;\n  var isOptionalSection = false;\n  for (var i = 0; i < expected.length; i++) {\n    if (expected[i].optional) {\n      isOptionalSection = true;\n    } else {\n      if (isOptionalSection) {\n        throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR,\n            'Argument validator encountered a required argument after an ' +\n            'optional argument.');\n      }\n      numRequiredArgs++;\n    }\n  }\n  return numRequiredArgs;\n};\n\n\n/**\n * @param {number} min The minimum number of arguments to the function,\n *     inclusive.\n * @param {number} max The maximum number of arguments to the function,\n *     inclusive.\n * @param {number} actual The actual number of arguments received.\n * @return {string} The error message.\n * @private\n */\nfireauth.args.makeLengthError_ = function(min, max, actual) {\n  var numExpectedString;\n  if (min == max) {\n    if (min == 1) {\n      numExpectedString = '1 argument';\n    } else {\n      numExpectedString = min + ' arguments';\n    }\n  } else {\n    numExpectedString = min + '-' + max + ' arguments';\n  }\n  return 'Expected ' + numExpectedString + ' but got ' + actual + '.';\n};\n\n\n/**\n * @param {number} position The position at which there was an error.\n * @param {!fireauth.args.Argument} expectedType The expected type of the\n *     argument, which was violated.\n * @param {boolean=} opt_isSetter Whether the function is a setter which takes\n *     a single argument.\n * @return {string} The error message.\n * @private\n */\nfireauth.args.makeErrorAtPosition_ =\n    function(position, expectedType, opt_isSetter) {\n  var ordinal = fireauth.args.makeOrdinal_(position);\n  var argName = expectedType.name ?\n      fireauth.args.quoteString_(expectedType.name) + ' ' : '';\n  // Add support to setters for readable/writable properties which take a\n  // required single argument.\n  var errorPrefix = !!opt_isSetter ? '' : ordinal + ' argument ';\n  return errorPrefix + argName + 'must be ' +\n      expectedType.typeLabel + '.';\n};\n\n\n/** @private {!Array<string>} The first few ordinal numbers. */\nfireauth.args.ORDINAL_NUMBERS_ = ['First', 'Second', 'Third', 'Fourth',\n  'Fifth', 'Sixth', 'Seventh', 'Eighth', 'Ninth'];\n\n\n/**\n * @param {number} cardinal An integer.\n * @return {string} The integer converted to an ordinal number, starting at\n *     \"First\". That is, makeOrdinal_(0) returns \"First\" and makeOrdinal_(1)\n *     returns \"Second\", etc.\n * @private\n */\nfireauth.args.makeOrdinal_ = function(cardinal) {\n  // We only support the first few ordinal numbers. We could provide a more\n  // robust solution, but it is unlikely that a function would need more than\n  // nine arguments.\n  if (cardinal < 0 || cardinal >= fireauth.args.ORDINAL_NUMBERS_.length) {\n    throw new fireauth.AuthError(fireauth.authenum.Error.INTERNAL_ERROR,\n        'Argument validator received an unsupported number of arguments.');\n  }\n  return fireauth.args.ORDINAL_NUMBERS_[cardinal];\n};\n\n\n/**\n * Specifies a string argument.\n * @param {?string=} opt_name The name of the argument.\n * @param {?boolean=} opt_optional Whether or not this argument is optional.\n *     Defaults to false.\n * @return {!fireauth.args.Argument}\n */\nfireauth.args.string = function(opt_name, opt_optional) {\n  return {\n    name: opt_name || '',\n    typeLabel: 'a valid string',\n    optional: !!opt_optional,\n    validator: x => typeof x === 'string'\n  };\n};\n\n\n/**\n * Specifies a boolean argument.\n * @param {?string=} opt_name The name of the argument.\n * @param {?boolean=} opt_optional Whether or not this argument is optional.\n *     Defaults to false.\n * @return {!fireauth.args.Argument}\n */\nfireauth.args.bool = function(opt_name, opt_optional) {\n  return {\n    name: opt_name || '',\n    typeLabel: 'a boolean',\n    optional: !!opt_optional,\n    validator: x => typeof x === 'boolean'\n  };\n};\n\n\n/**\n * Specifies a number argument.\n * @param {?string=} opt_name The name of the argument.\n * @param {?boolean=} opt_optional Whether or not this argument is optional.\n *     Defaults to false.\n * @return {!fireauth.args.Argument}\n */\nfireauth.args.number = function(opt_name, opt_optional) {\n  return {\n    name: opt_name || '',\n    typeLabel: 'a valid number',\n    optional: !!opt_optional,\n    validator: x => typeof x === 'number'\n  };\n};\n\n\n/**\n * Specifies an object argument.\n * @param {?string=} opt_name The name of the argument.\n * @param {?boolean=} opt_optional Whether or not this argument is optional.\n *     Defaults to false.\n * @return {!fireauth.args.Argument}\n */\nfireauth.args.object = function(opt_name, opt_optional) {\n  return {\n    name: opt_name || '',\n    typeLabel: 'a valid object',\n    optional: !!opt_optional,\n    validator: goog.isObject\n  };\n};\n\n\n/**\n * Specifies a function argument.\n * @param {?string=} opt_name The name of the argument.\n * @param {?boolean=} opt_optional Whether or not this argument is optional.\n *     Defaults to false.\n * @return {!fireauth.args.Argument}\n */\nfireauth.args.func = function(opt_name, opt_optional) {\n  return {\n    name: opt_name || '',\n    typeLabel: 'a function',\n    optional: !!opt_optional,\n    validator: x => typeof x === 'function'\n  };\n};\n\n\n/**\n * Specifies a null argument.\n * @param {?string=} opt_name The name of the argument.\n * @param {?boolean=} opt_optional Whether or not this argument is optional.\n *     Defaults to false.\n * @return {!fireauth.args.Argument}\n */\nfireauth.args.null = function(opt_name, opt_optional) {\n  return {\n    name: opt_name || '',\n    typeLabel: 'null',\n    optional: !!opt_optional,\n    validator: x => x === null\n  };\n};\n\n\n/**\n * Specifies an HTML element argument.\n * @param {?string=} opt_name The name of the argument.\n * @param {?boolean=} opt_optional Whether or not this argument is optional.\n *     Defaults to false.\n * @return {!fireauth.args.Argument}\n */\nfireauth.args.element = function(opt_name, opt_optional) {\n   return /** @type {!fireauth.args.Argument} */ ({\n    name: opt_name || '',\n    typeLabel: 'an HTML element',\n    optional: !!opt_optional,\n    validator: /** @type {function(!Element) : boolean} */ (\n        function(element) {\n          return !!(element && element instanceof Element);\n        })\n  });\n};\n\n\n/**\n * Specifies an instance of Firebase Auth.\n * @param {?boolean=} opt_optional Whether or not this argument is optional.\n *     Defaults to false.\n * @return {!fireauth.args.Argument}\n */\nfireauth.args.firebaseAuth = function(opt_optional) {\n  return /** @type {!fireauth.args.Argument} */ ({\n    name: 'auth',\n    typeLabel: 'an instance of Firebase Auth',\n    optional: !!opt_optional,\n    validator: /** @type {function(!fireauth.Auth) : boolean} */ (\n        function(auth) {\n          return !!(auth && auth instanceof fireauth.Auth);\n        })\n  });\n};\n\n\n/**\n * Specifies an instance of Firebase User.\n * @param {?boolean=} opt_optional Whether or not this argument is optional.\n *     Defaults to false.\n * @return {!fireauth.args.Argument}\n */\nfireauth.args.firebaseUser = function(opt_optional) {\n  return /** @type {!fireauth.args.Argument} */ ({\n    name: 'user',\n    typeLabel: 'an instance of Firebase User',\n    optional: !!opt_optional,\n    validator: /** @type {function(!fireauth.AuthUser) : boolean} */ (\n        function(user) {\n          return !!(user && user instanceof fireauth.AuthUser);\n        })\n  });\n};\n\n\n/**\n * Specifies an instance of Firebase App.\n * @param {?boolean=} opt_optional Whether or not this argument is optional.\n *     Defaults to false.\n * @return {!fireauth.args.Argument}\n */\nfireauth.args.firebaseApp = function(opt_optional) {\n  return /** @type {!fireauth.args.Argument} */ ({\n    name: 'app',\n    typeLabel: 'an instance of Firebase App',\n    optional: !!opt_optional,\n    validator: /** @type {function(!firebase.app.App) : boolean} */ (\n        function(app) {\n          return !!(app && app instanceof firebase.app.App);\n        })\n  });\n};\n\n\n/**\n * Specifies an argument that implements the fireauth.AuthCredential interface.\n * @param {?fireauth.idp.ProviderId=} opt_requiredProviderId The required type\n *     of provider.\n * @param {?string=} opt_name The name of the argument.\n * @param {?boolean=} opt_optional Whether or not this argument is optional.\n *     Defaults to false.\n * @return {!fireauth.args.Argument}\n */\nfireauth.args.authCredential =\n    function(opt_requiredProviderId, opt_name, opt_optional) {\n  var name = opt_name ||\n      (opt_requiredProviderId ?\n       opt_requiredProviderId + 'Credential' :\n       'credential');\n  var typeLabel = opt_requiredProviderId ?\n      'a valid ' + opt_requiredProviderId + ' credential' :\n      'a valid credential';\n  return /** @type {!fireauth.args.Argument} */ ({\n    name: name,\n    typeLabel: typeLabel,\n    optional: !!opt_optional,\n    validator: /** @type {function(!fireauth.AuthCredential) : boolean} */ (\n        function(credential) {\n          if (!credential) {\n            return false;\n          }\n          // If opt_requiredProviderId is set, make sure it matches the\n          // credential's providerId.\n          var matchesRequiredProvider = !opt_requiredProviderId ||\n              (credential['providerId'] === opt_requiredProviderId);\n          return !!(credential.getIdTokenProvider && matchesRequiredProvider);\n        })\n  });\n};\n\n\n/**\n * Specifies an argument that implements the fireauth.MultiFactorAssertion\n * interface.\n * @param {?string=} requiredFactorId The required type of second factor.\n * @param {?string=} optionalName The name of the argument.\n * @param {?boolean=} optionalArg Whether or not this argument is optional.\n *     Defaults to false.\n * @return {!fireauth.args.Argument}\n */\nfireauth.args.multiFactorAssertion =\n    function(requiredFactorId, optionalName, optionalArg) {\n  var name = optionalName ||\n      (requiredFactorId ?\n       requiredFactorId + 'MultiFactorAssertion' : 'multiFactorAssertion');\n  var typeLabel = requiredFactorId ?\n      'a valid ' + requiredFactorId + ' multiFactorAssertion' :\n      'a valid multiFactorAssertion';\n  return /** @type {!fireauth.args.Argument} */ ({\n    name: name,\n    typeLabel: typeLabel,\n    optional: !!optionalArg,\n    validator:\n        /** @type {function(!fireauth.MultiFactorAssertion) : boolean} */ (\n            function(assertion) {\n              if (!assertion) {\n                return false;\n              }\n              // If requiredFactorId is set, make sure it matches the\n              // assertion's factorId.\n              var matchesRequiredFactor = !requiredFactorId ||\n                  (assertion['factorId'] === requiredFactorId);\n              return !!(assertion.process && matchesRequiredFactor);\n            })\n  });\n};\n\n\n/**\n * Specifies an argument that implements the fireauth.AuthProvider interface.\n * @param {?string=} opt_name The name of the argument.\n * @param {?boolean=} opt_optional Whether or not this argument is optional.\n *     Defaults to false.\n * @return {!fireauth.args.Argument}\n */\nfireauth.args.authProvider = function(opt_name, opt_optional) {\n  return /** @type {!fireauth.args.Argument} */ ({\n    name: opt_name || 'authProvider',\n    typeLabel: 'a valid Auth provider',\n    optional: !!opt_optional,\n    validator: /** @type {function(!fireauth.AuthProvider) : boolean} */ (\n        function(provider) {\n          return !!(provider &&\n                    provider['providerId'] &&\n                    provider.hasOwnProperty &&\n                    provider.hasOwnProperty('isOAuthProvider'));\n        })\n  });\n};\n\n\n/**\n * Specifies a phone info options argument.\n * @param {?string=} name The name of the argument.\n * @param {?boolean=} optional Whether or not this argument is optional.\n *     Defaults to false.\n * @return {!fireauth.args.Argument}\n */\nfireauth.args.phoneInfoOptions = function(name, optional) {\n  return /** @type {!fireauth.args.Argument} */ ({\n    name: name || 'phoneInfoOptions',\n    typeLabel: 'valid phone info options',\n    optional: !!optional,\n    validator: /** @type {function(!Object) : boolean} */ (\n        function(phoneInfoOptions) {\n          if (!phoneInfoOptions) {\n            return false;\n          }\n          // For multi-factor enrollment, phone number and MFA session should\n          // be provided.\n          if (phoneInfoOptions['session'] &&\n              phoneInfoOptions['phoneNumber']) {\n            return fireauth.args.validateMultiFactorSession_(\n                       phoneInfoOptions['session'],\n                       fireauth.MultiFactorSession.Type.ENROLL) &&\n                   typeof phoneInfoOptions['phoneNumber'] === 'string';\n          // For multi-factor sign-in, phone multi-factor hint and MFA session\n          // are provided.\n          } else if (phoneInfoOptions['session'] &&\n                     phoneInfoOptions['multiFactorHint']) {\n            return fireauth.args.validateMultiFactorSession_(\n                       phoneInfoOptions['session'],\n                       fireauth.MultiFactorSession.Type.SIGN_IN) &&\n                   fireauth.args.validateMultiFactorInfo_(\n                       phoneInfoOptions['multiFactorHint']);\n          // For multi-factor sign-in, phone multi-factor UID and MFA session\n          // are provided.\n          } else if (phoneInfoOptions['session'] &&\n                     phoneInfoOptions['multiFactorUid']) {\n            return fireauth.args.validateMultiFactorSession_(\n                       phoneInfoOptions['session'],\n                       fireauth.MultiFactorSession.Type.SIGN_IN) &&\n                   typeof phoneInfoOptions['multiFactorUid'] === 'string';\n          // For single-factor sign-in, only phone number needs to be provided.\n          } else if (phoneInfoOptions['phoneNumber']) {\n            return typeof phoneInfoOptions['phoneNumber'] === 'string';\n          }\n          return false;\n        })\n  });\n};\n\n\n/**\n * @param {*} session The multi-factor session object.\n * @param {!fireauth.MultiFactorSession.Type} type The session type.\n * @return {boolean} Whether the seesion is a valid multi-factor session.\n * @private\n */\nfireauth.args.validateMultiFactorSession_ = function(session, type) {\n  return goog.isObject(session) && typeof session.type === 'string' &&\n      session.type === type &&\n      typeof session.getRawSession === 'function';\n};\n\n\n/**\n * @param {*} info The multi-factor info object.\n * @return {boolean} Whether the info is a valid multi-factor info.\n * @private\n */\nfireauth.args.validateMultiFactorInfo_ = function(info) {\n  return goog.isObject(info) && typeof info['uid'] === 'string';\n};\n\n\n/**\n * Specifies an argument that implements the fireauth.MultiFactorInfo\n * interface.\n * @param {?string=} name The name of the argument.\n * @param {?boolean=} optional Whether or not this argument is optional.\n *     Defaults to false.\n * @return {!fireauth.args.Argument}\n */\nfireauth.args.multiFactorInfo = function(name, optional) {\n  return /** @type {!fireauth.args.Argument} */ ({\n    name: name || 'multiFactorInfo',\n    typeLabel: 'a valid multiFactorInfo',\n    optional: !!optional,\n    validator: fireauth.args.validateMultiFactorInfo_\n  });\n};\n\n\n/**\n * Specifies an argument that implements the firebase.auth.ApplicationVerifier\n * interface.\n * @param {?boolean=} opt_optional Whether or not this argument is optional.\n *     Defaults to false.\n * @return {!fireauth.args.Argument}\n */\nfireauth.args.applicationVerifier = function(opt_optional) {\n  return /** @type {!fireauth.args.Argument} */ ({\n    name: 'applicationVerifier',\n    typeLabel: 'an implementation of firebase.auth.ApplicationVerifier',\n    optional: !!opt_optional,\n    validator:\n        /** @type {function(!firebase.auth.ApplicationVerifier) : boolean} */ (\n        function(applicationVerifier) {\n          return !!(applicationVerifier &&\n                    typeof applicationVerifier.type === 'string' &&\n                    typeof applicationVerifier.verify === 'function');\n        })\n  });\n};\n\n\n/**\n * Specifies an argument that can be either of two argument types.\n * @param {!fireauth.args.Argument} optionA\n * @param {!fireauth.args.Argument} optionB\n * @param {?string=} opt_name The name of the argument.\n * @param {?boolean=} opt_optional Whether or not this argument is optional.\n *     Defaults to false.\n * @return {!fireauth.args.Argument}\n */\nfireauth.args.or = function(optionA, optionB, opt_name, opt_optional) {\n  return {\n    name: opt_name || '',\n    typeLabel: optionA.typeLabel + ' or ' + optionB.typeLabel,\n    optional: !!opt_optional,\n    validator: function(value) {\n      return optionA.validator(value) || optionB.validator(value);\n    }\n  };\n};\n\n\n/**\n * @param {string} str\n * @return {string} The string surrounded with quotes.\n * @private\n */\nfireauth.args.quoteString_ = function(str) {\n  return '\"' + str + '\"';\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Provides utilities for exporting public APIs, with error\n *     checking.\n */\n\ngoog.provide('fireauth.exportlib');\ngoog.provide('fireauth.exportlib.ExportedMethod');\n\ngoog.require('fireauth.args');\n\n\n/**\n * Type constant for Firebase Auth.\n * @const {string}\n */\nfireauth.exportlib.AUTH_TYPE = 'auth';\n\n\n/**\n * Represents an exported method, with the exported name of the method and the\n * expected arguments to that method.\n * @typedef {{\n *   name: string,\n *   args: (Array<!fireauth.args.Argument>|null|undefined)\n * }}\n */\nfireauth.exportlib.ExportedMethod;\n\n\n/**\n * Represents an exported property, with the exported name of the property and\n * the expected argument to the setter of this property.\n * @typedef {{\n *   name: string,\n *   arg: !fireauth.args.Argument\n * }}\n */\nfireauth.exportlib.ExportedProperty;\n\n\n/**\n * Exports prototype methods of an object.\n * @param {!Object} protObj The prototype of an object.\n * @param {!Object<string, fireauth.exportlib.ExportedMethod>} fnMap The map of\n *     prototype functions to their export name and expected arguments.\n */\nfireauth.exportlib.exportPrototypeMethods = function(protObj, fnMap) {\n  // This method exports methods by aliasing the unobfuscated function name\n  // (specified as a string in the \"name\" field of ExportedMethod) to the\n  // obfuscated function name (specified as a key of the fnMap object).\n  //\n  // To give a concrete example, let's say that we have this method:\n  // fireauth.Auth.prototype.fetchProvidersForEmail = function() { ... };\n  //\n  // In the exports file, we export as follows:\n  // fireauth.exportlib.exportPrototypeMethods(fireauth.Auth.prototype, {\n  //   fetchProvidersForEmail: {name: 'fetchProvidersForEmail', args: ...}\n  // });\n  //\n  // When the compiler obfuscates the code, the code above will become something\n  // like this:\n  // fireauth.Auth.prototype.qZ = function() { ... };\n  // fireauth.exportlib.exportPrototypeMethods(fireauth.Auth.prototype, {\n  //   qZ: {name: 'fetchProvidersForEmail', args: ...}\n  // });\n  //\n  // (Of course, fireauth.Auth and fireauth.exportlib.exportPrototypeMethods\n  // would also be obfuscated). Note that the key in fnMap is obfuscated but the\n  // \"name\" field in the ExportedMethod is not. Now, exportPrototypeMethods can\n  // export fetchProvidersForEmail by reading the key (\"qZ\") and the \"name\"\n  // field (\"fetchProvidersForEmail\") and essentially executing this:\n  // fireauth.Auth.prototype['fetchProvidersForEmail'] =\n  //     fireauth.Auth.prototype['qZ'];\n  for (var obfuscatedFnName in fnMap) {\n    var unobfuscatedFnName = fnMap[obfuscatedFnName].name;\n    protObj[unobfuscatedFnName] =\n        fireauth.exportlib.wrapMethodWithArgumentVerifier_(\n        unobfuscatedFnName, protObj[obfuscatedFnName],\n        fnMap[obfuscatedFnName].args);\n  }\n};\n\n\n/**\n * Exports properties of an object. See the docs for exportPrototypeMethods for\n * more information about how this works.\n * @param {!Object} protObj The prototype of an object.\n * @param {!Object<string, !fireauth.exportlib.ExportedProperty>} propMap The\n *     map of properties to their export names.\n */\nfireauth.exportlib.exportPrototypeProperties = function(protObj, propMap) {\n  for (var obfuscatedPropName in propMap) {\n    var unobfuscatedPropName = propMap[obfuscatedPropName].name;\n    // Don't alias a property to itself.\n    // Downside is that argument validation will not be possible. For now, to\n    // get around it, ensure unobfuscated property names are different\n    // than the corresponding obfuscated property names.\n    if (unobfuscatedPropName === obfuscatedPropName) {\n      continue;\n    }\n    /**\n     * @this {!Object}\n     * @param {string} obfuscatedPropName The obfuscated property name.\n     * @return {*} The value of the property.\n     */\n    var getter = function(obfuscatedPropName) {\n      return this[obfuscatedPropName];\n    };\n    /**\n     * @this {!Object}\n     * @param {string} unobfuscatedPropName The unobfuscated property name.\n     * @param {string} obfuscatedPropName The obfuscated property name.\n     * @param {!fireauth.args.Argument} expectedArg The expected argument to the\n     *     setter of this property.\n     * @param {*} value The new value of the property.\n     */\n    var setter = function(unobfuscatedPropName, obfuscatedPropName,\n                          expectedArg, value) {\n      // Validate the argument before setting it.\n      fireauth.args.validate(\n          unobfuscatedPropName, [expectedArg], [value], true);\n      this[obfuscatedPropName] = value;\n    };\n    // Get the expected argument.\n    var expectedArg = propMap[obfuscatedPropName].arg;\n    Object.defineProperty(protObj, unobfuscatedPropName, {\n      /**\n       * @this {!Object}\n       * @return {*} The value of the property.\n       */\n      get: goog.partial(getter, obfuscatedPropName),\n      /**\n       * @this {!Object}\n       * @param {*} value The new value of the property.\n       */\n      set: goog.partial(setter, unobfuscatedPropName, obfuscatedPropName,\n                        expectedArg),\n      enumerable: true\n    });\n  }\n};\n\n\n/**\n * Export a static method as a public API.\n * @param {!Object} parentObj The parent object to patch.\n * @param {string} name The public name of the method.\n * @param {!Function} func The method.\n * @param {?Array<!fireauth.args.Argument>=} opt_expectedArgs The expected\n *     arguments to the method.\n */\nfireauth.exportlib.exportFunction = function(parentObj, name, func,\n    opt_expectedArgs) {\n  parentObj[name] = fireauth.exportlib.wrapMethodWithArgumentVerifier_(\n      name, func, opt_expectedArgs);\n};\n\n\n/**\n * Wraps a method with a function that first verifies the arguments to the\n * method and then calls the original method.\n * @param {string} methodName The name of the method, which will be displayed\n *     on the error message if the arguments are not valid.\n * @param {!Function} method The method to be wrapped.\n * @param {?Array<!fireauth.args.Argument>=} opt_expectedArgs The expected\n *     arguments.\n * @return {!Function} The wrapped method.\n * @private\n */\nfireauth.exportlib.wrapMethodWithArgumentVerifier_ = function(methodName,\n    method, opt_expectedArgs) {\n  if (!opt_expectedArgs) {\n    return method;\n  }\n  var shortName = fireauth.exportlib.extractMethodNameFromFullPath_(methodName);\n  var wrapper = function() {\n    var argumentsAsArray = Array.prototype.slice.call(arguments);\n    fireauth.args.validate(shortName,\n        /** @type {!Array<!fireauth.args.Argument>} */ (opt_expectedArgs),\n        argumentsAsArray);\n    return method.apply(this, argumentsAsArray);\n  };\n  // Reattach all static stuff to wrapper.\n  for (var key in method) {\n    wrapper[key] = method[key];\n  }\n  // Reattach all prototype stuff to wrapper.\n  for (var key in method.prototype) {\n    wrapper.prototype[key] = method.prototype[key];\n  }\n  // Return wrapper with all of method's static and prototype methods and\n  // properties.\n  return wrapper;\n};\n\n\n/**\n * From a full path to a method (e.g. \"fireauth.GoogleAuthProvider.credential\"),\n * get just the method name (\"credential\").\n * @param {string} path The full path.\n * @return {string} The method name.\n * @private\n */\nfireauth.exportlib.extractMethodNameFromFullPath_ = function(path) {\n  var parts = path.split('.');\n  return parts[parts.length - 1];\n};\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\ngoog.provide('fireauth.exports');\n\ngoog.require('fireauth.ActionCodeInfo');\ngoog.require('fireauth.ActionCodeURL');\ngoog.require('fireauth.Auth');\ngoog.require('fireauth.AuthCredential');\ngoog.require('fireauth.AuthError');\ngoog.require('fireauth.AuthErrorWithCredential');\ngoog.require('fireauth.AuthSettings');\ngoog.require('fireauth.AuthUser');\ngoog.require('fireauth.ConfirmationResult');\ngoog.require('fireauth.EmailAuthCredential');\ngoog.require('fireauth.EmailAuthProvider');\ngoog.require('fireauth.FacebookAuthProvider');\ngoog.require('fireauth.GRecaptchaMockFactory');\ngoog.require('fireauth.GithubAuthProvider');\ngoog.require('fireauth.GoogleAuthProvider');\ngoog.require('fireauth.InvalidOriginError');\ngoog.require('fireauth.MultiFactorError');\ngoog.require('fireauth.MultiFactorResolver');\ngoog.require('fireauth.MultiFactorUser');\ngoog.require('fireauth.OAuthCredential');\ngoog.require('fireauth.OAuthProvider');\ngoog.require('fireauth.PhoneAuthCredential');\ngoog.require('fireauth.PhoneAuthProvider');\ngoog.require('fireauth.PhoneMultiFactorGenerator');\ngoog.require('fireauth.RecaptchaVerifier');\ngoog.require('fireauth.SAMLAuthCredential');\ngoog.require('fireauth.SAMLAuthProvider');\ngoog.require('fireauth.TwitterAuthProvider');\ngoog.require('fireauth.args');\ngoog.require('fireauth.authStorage.Persistence');\ngoog.require('fireauth.exportlib');\ngoog.require('fireauth.grecaptcha');\ngoog.require('fireauth.idp.ProviderId');\ngoog.require('goog.Promise');\n\n/** @define {string} */\nconst AUTH_NPM_PACKAGE_VERSION = '';\n\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.Auth.prototype, {\n      applyActionCode: {\n        name: 'applyActionCode',\n        args: [fireauth.args.string('code')]\n      },\n      checkActionCode: {\n        name: 'checkActionCode',\n        args: [fireauth.args.string('code')]\n      },\n      confirmPasswordReset: {\n        name: 'confirmPasswordReset',\n        args: [\n          fireauth.args.string('code'),\n          fireauth.args.string('newPassword')\n        ]\n      },\n      createUserWithEmailAndPassword: {\n        name: 'createUserWithEmailAndPassword',\n        args: [fireauth.args.string('email'), fireauth.args.string('password')]\n      },\n      fetchSignInMethodsForEmail: {\n        name: 'fetchSignInMethodsForEmail',\n        args: [fireauth.args.string('email')]\n      },\n      getRedirectResult: {\n        name: 'getRedirectResult',\n        args: []\n      },\n      isSignInWithEmailLink: {\n        name: 'isSignInWithEmailLink',\n        args: [fireauth.args.string('emailLink')]\n      },\n      onAuthStateChanged: {\n        name: 'onAuthStateChanged',\n        args: [\n          fireauth.args.or(\n              fireauth.args.object(),\n              fireauth.args.func(),\n              'nextOrObserver'),\n          fireauth.args.func('opt_error', true),\n          fireauth.args.func('opt_completed', true)\n        ]\n      },\n      onIdTokenChanged: {\n        name: 'onIdTokenChanged',\n        args: [\n          fireauth.args.or(\n              fireauth.args.object(),\n              fireauth.args.func(),\n              'nextOrObserver'),\n          fireauth.args.func('opt_error', true),\n          fireauth.args.func('opt_completed', true)\n        ]\n      },\n      sendPasswordResetEmail: {\n        name: 'sendPasswordResetEmail',\n        args: [\n          fireauth.args.string('email'),\n          fireauth.args.or(\n              fireauth.args.object('opt_actionCodeSettings', true),\n              fireauth.args.null(null, true),\n              'opt_actionCodeSettings',\n              true)\n        ]\n      },\n      sendSignInLinkToEmail: {\n        name: 'sendSignInLinkToEmail',\n        args: [\n          fireauth.args.string('email'),\n          fireauth.args.object('actionCodeSettings')\n        ]\n      },\n      setPersistence: {\n        name: 'setPersistence',\n        args:  [fireauth.args.string('persistence')]\n      },\n      signInAndRetrieveDataWithCredential: {\n        name: 'signInAndRetrieveDataWithCredential',\n        args: [fireauth.args.authCredential()]\n      },\n      signInAnonymously: {\n        name: 'signInAnonymously',\n        args: []\n      },\n      signInWithCredential: {\n        name: 'signInWithCredential',\n        args: [fireauth.args.authCredential()]\n      },\n      signInWithCustomToken: {\n        name: 'signInWithCustomToken',\n        args: [fireauth.args.string('token')]\n      },\n      signInWithEmailAndPassword: {\n        name: 'signInWithEmailAndPassword',\n        args: [fireauth.args.string('email'), fireauth.args.string('password')]\n      },\n      signInWithEmailLink: {\n        name: 'signInWithEmailLink',\n        args: [\n          fireauth.args.string('email'), fireauth.args.string('emailLink', true)\n        ]\n      },\n      signInWithPhoneNumber: {\n        name: 'signInWithPhoneNumber',\n        args: [\n          fireauth.args.string('phoneNumber'),\n          fireauth.args.applicationVerifier()\n        ]\n      },\n      signInWithPopup: {\n        name: 'signInWithPopup',\n        args: [fireauth.args.authProvider()]\n      },\n      signInWithRedirect: {\n        name: 'signInWithRedirect',\n        args: [fireauth.args.authProvider()]\n      },\n      updateCurrentUser: {\n        name: 'updateCurrentUser',\n        args: [\n          fireauth.args.or(\n            fireauth.args.firebaseUser(),\n            fireauth.args.null(),\n            'user')\n        ]\n      },\n      signOut: {\n        name: 'signOut',\n        args: []\n      },\n      toJSON: {\n        name: 'toJSON',\n        // This shouldn't take an argument but a blank string is being passed\n        // on JSON.stringify and causing this to fail with an argument error.\n        // So allow an optional string.\n        args: [fireauth.args.string(null, true)]\n      },\n      useDeviceLanguage: {\n        name: 'useDeviceLanguage',\n        args: []\n      },\n      useEmulator: {\n        name: 'useEmulator',\n        args: [\n          fireauth.args.string('url'),\n          fireauth.args.object('options', true)\n        ]\n      },\n      verifyPasswordResetCode: {\n        name: 'verifyPasswordResetCode',\n        args: [fireauth.args.string('code')]\n      }\n    });\n\nfireauth.exportlib.exportPrototypeProperties(\n    fireauth.Auth.prototype, {\n      'lc': {\n        name: 'languageCode',\n        arg: fireauth.args.or(\n            fireauth.args.string(),\n            fireauth.args.null(),\n            'languageCode')\n      },\n      'ti': {\n        name: 'tenantId',\n        arg: fireauth.args.or(\n            fireauth.args.string(),\n            fireauth.args.null(),\n            'tenantId')\n      },\n      // emulatorConfig is omitted here as it is readonly and therefore does not\n      // need argument validation.\n    });\n\n// Exports firebase.auth.Auth.Persistence.\nfireauth.Auth['Persistence'] = fireauth.authStorage.Persistence;\nfireauth.Auth['Persistence']['LOCAL'] = fireauth.authStorage.Persistence.LOCAL;\nfireauth.Auth['Persistence']['SESSION'] =\n    fireauth.authStorage.Persistence.SESSION;\nfireauth.Auth['Persistence']['NONE'] = fireauth.authStorage.Persistence.NONE;\n\n\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.AuthUser.prototype, {\n      'delete': {\n        name: 'delete',\n        args: []\n      },\n      getIdTokenResult: {\n        name: 'getIdTokenResult',\n        args: [fireauth.args.bool('opt_forceRefresh', true)]\n      },\n      getIdToken: {\n        name: 'getIdToken',\n        args: [fireauth.args.bool('opt_forceRefresh', true)]\n      },\n      linkAndRetrieveDataWithCredential: {\n        name: 'linkAndRetrieveDataWithCredential',\n        args: [fireauth.args.authCredential()]\n      },\n      linkWithCredential: {\n        name: 'linkWithCredential',\n        args: [fireauth.args.authCredential()]\n      },\n      linkWithPhoneNumber: {\n        name: 'linkWithPhoneNumber',\n        args: [\n          fireauth.args.string('phoneNumber'),\n          fireauth.args.applicationVerifier()\n        ]\n      },\n      linkWithPopup: {\n        name: 'linkWithPopup',\n        args: [fireauth.args.authProvider()]\n      },\n      linkWithRedirect: {\n        name: 'linkWithRedirect',\n        args: [fireauth.args.authProvider()]\n      },\n      reauthenticateAndRetrieveDataWithCredential: {\n        name: 'reauthenticateAndRetrieveDataWithCredential',\n        args: [fireauth.args.authCredential()]\n      },\n      reauthenticateWithCredential: {\n        name: 'reauthenticateWithCredential',\n        args: [fireauth.args.authCredential()]\n      },\n      reauthenticateWithPhoneNumber: {\n        name: 'reauthenticateWithPhoneNumber',\n        args: [\n          fireauth.args.string('phoneNumber'),\n          fireauth.args.applicationVerifier()\n        ]\n      },\n      reauthenticateWithPopup: {\n        name: 'reauthenticateWithPopup',\n        args: [fireauth.args.authProvider()]\n      },\n      reauthenticateWithRedirect: {\n        name: 'reauthenticateWithRedirect',\n        args: [fireauth.args.authProvider()]\n      },\n      reload: {\n        name: 'reload',\n        args: []\n      },\n      sendEmailVerification: {\n        name: 'sendEmailVerification',\n        args: [\n          fireauth.args.or(\n              fireauth.args.object('opt_actionCodeSettings', true),\n              fireauth.args.null(null, true),\n              'opt_actionCodeSettings',\n              true)\n        ]\n      },\n      toJSON: {\n        name: 'toJSON',\n        // This shouldn't take an argument but a blank string is being passed\n        // on JSON.stringify and causing this to fail with an argument error.\n        // So allow an optional string.\n        args: [fireauth.args.string(null, true)]\n      },\n      unlink: {\n        name: 'unlink',\n        args: [fireauth.args.string('provider')]\n      },\n      updateEmail: {\n        name: 'updateEmail',\n        args: [fireauth.args.string('email')]\n      },\n      updatePassword: {\n        name: 'updatePassword',\n        args: [fireauth.args.string('password')]\n      },\n      updatePhoneNumber: {\n        name: 'updatePhoneNumber',\n        args: [fireauth.args.authCredential(fireauth.idp.ProviderId.PHONE)]\n      },\n      updateProfile: {\n        name: 'updateProfile',\n        args: [fireauth.args.object('profile')]\n      },\n      verifyBeforeUpdateEmail: {\n        name: 'verifyBeforeUpdateEmail',\n        args: [\n          fireauth.args.string('email'),\n          fireauth.args.or(\n              fireauth.args.object('opt_actionCodeSettings', true),\n              fireauth.args.null(null, true),\n              'opt_actionCodeSettings',\n              true)\n        ]\n      }\n    });\n\n// Ensure internal grecaptcha mock API do not get obfuscated.\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.GRecaptchaMockFactory.prototype, {\n      execute: {\n        name: 'execute'\n      },\n      render: {\n        name: 'render'\n      },\n      reset: {\n        name: 'reset'\n      },\n      getResponse: {\n        name: 'getResponse'\n      }\n    });\n\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.grecaptcha.prototype, {\n      execute: {\n        name: 'execute'\n      },\n      render: {\n        name: 'render'\n      },\n      reset: {\n        name: 'reset'\n      },\n      getResponse: {\n        name: 'getResponse'\n      }\n    });\n\nfireauth.exportlib.exportPrototypeMethods(\n    goog.Promise.prototype, {\n      thenAlways: {\n        name: 'finally'\n      },\n      thenCatch: {\n        name: 'catch'\n      },\n      then: {\n        name: 'then'\n      }\n    });\n\nfireauth.exportlib.exportPrototypeProperties(\n    fireauth.AuthSettings.prototype, {\n      'appVerificationDisabled': {\n        name: 'appVerificationDisabledForTesting',\n        arg: fireauth.args.bool('appVerificationDisabledForTesting')\n      }\n    });\n\nfireauth.exportlib.exportPrototypeMethods(\n   fireauth.ConfirmationResult.prototype, {\n      confirm: {\n        name: 'confirm',\n        args: [\n          fireauth.args.string('verificationCode')\n        ]\n      }\n    });\n\nfireauth.exportlib.exportFunction(\n    fireauth.AuthCredential, 'fromJSON',\n    fireauth.AuthCredential.fromPlainObject, [\n      fireauth.args.or(fireauth.args.string(), fireauth.args.object(), 'json')\n    ]);\n\nfireauth.exportlib.exportFunction(\n    fireauth.EmailAuthProvider, 'credential',\n    fireauth.EmailAuthProvider.credential, [\n      fireauth.args.string('email'),\n      fireauth.args.string('password')\n    ]);\n\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.EmailAuthCredential.prototype, {\n     toPlainObject: {\n        name: 'toJSON',\n        // This shouldn't take an argument but a blank string is being passed\n        // on JSON.stringify and causing this to fail with an argument error.\n        // So allow an optional string.\n        args: [fireauth.args.string(null, true)]\n      }\n    });\n\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.FacebookAuthProvider.prototype, {\n      addScope: {\n        name: 'addScope',\n        args: [fireauth.args.string('scope')]\n      },\n      setCustomParameters: {\n        name: 'setCustomParameters',\n        args: [fireauth.args.object('customOAuthParameters')]\n      }\n    });\nfireauth.exportlib.exportFunction(\n    fireauth.FacebookAuthProvider, 'credential',\n    fireauth.FacebookAuthProvider.credential, [\n      fireauth.args.or(fireauth.args.string(), fireauth.args.object(),\n          'token')\n    ]);\nfireauth.exportlib.exportFunction(\n    fireauth.EmailAuthProvider, 'credentialWithLink',\n    fireauth.EmailAuthProvider.credentialWithLink, [\n      fireauth.args.string('email'),\n      fireauth.args.string('emailLink')\n    ]);\n\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.GithubAuthProvider.prototype, {\n      addScope: {\n        name: 'addScope',\n        args: [fireauth.args.string('scope')]\n      },\n      setCustomParameters: {\n        name: 'setCustomParameters',\n        args: [fireauth.args.object('customOAuthParameters')]\n      }\n    });\nfireauth.exportlib.exportFunction(\n    fireauth.GithubAuthProvider, 'credential',\n    fireauth.GithubAuthProvider.credential, [\n      fireauth.args.or(fireauth.args.string(), fireauth.args.object(),\n          'token')\n    ]);\n\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.GoogleAuthProvider.prototype, {\n      addScope: {\n        name: 'addScope',\n        args: [fireauth.args.string('scope')]\n      },\n      setCustomParameters: {\n        name: 'setCustomParameters',\n        args: [fireauth.args.object('customOAuthParameters')]\n      }\n    });\nfireauth.exportlib.exportFunction(\n    fireauth.GoogleAuthProvider, 'credential',\n    fireauth.GoogleAuthProvider.credential, [\n      fireauth.args.or(fireauth.args.string(),\n          fireauth.args.or(fireauth.args.object(), fireauth.args.null()),\n          'idToken'),\n      fireauth.args.or(fireauth.args.string(), fireauth.args.null(),\n          'accessToken', true)\n    ]);\n\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.TwitterAuthProvider.prototype, {\n      setCustomParameters: {\n        name: 'setCustomParameters',\n        args: [fireauth.args.object('customOAuthParameters')]\n      }\n    });\nfireauth.exportlib.exportFunction(\n    fireauth.TwitterAuthProvider, 'credential',\n    fireauth.TwitterAuthProvider.credential, [\n      fireauth.args.or(fireauth.args.string(), fireauth.args.object(),\n          'token'),\n      fireauth.args.string('secret', true)\n    ]);\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.OAuthProvider.prototype, {\n      addScope: {\n        name: 'addScope',\n        args: [fireauth.args.string('scope')]\n      },\n      credential: {\n        name: 'credential',\n        args: [\n          fireauth.args.or(\n              fireauth.args.string(),\n              fireauth.args.or(fireauth.args.object(), fireauth.args.null()),\n              'optionsOrIdToken'),\n          fireauth.args.or(fireauth.args.string(), fireauth.args.null(),\n              'accessToken', true)\n        ]\n      },\n      setCustomParameters: {\n        name: 'setCustomParameters',\n        args: [fireauth.args.object('customOAuthParameters')]\n      }\n    });\n\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.OAuthCredential.prototype, {\n     toPlainObject: {\n        name: 'toJSON',\n        // This shouldn't take an argument but a blank string is being passed\n        // on JSON.stringify and causing this to fail with an argument error.\n        // So allow an optional string.\n        args: [fireauth.args.string(null, true)]\n      }\n    });\n\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.SAMLAuthCredential.prototype, {\n     toPlainObject: {\n        name: 'toJSON',\n        // This shouldn't take an argument but a blank string is being passed\n        // on JSON.stringify and causing this to fail with an argument error.\n        // So allow an optional string.\n        args: [fireauth.args.string(null, true)]\n      }\n    });\n\nfireauth.exportlib.exportFunction(\n    fireauth.PhoneAuthProvider, 'credential',\n    fireauth.PhoneAuthProvider.credential, [\n      fireauth.args.string('verificationId'),\n      fireauth.args.string('verificationCode')\n    ]);\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.PhoneAuthProvider.prototype, {\n      verifyPhoneNumber: {\n        name: 'verifyPhoneNumber',\n        args: [\n          fireauth.args.or(\n              fireauth.args.string(),\n              fireauth.args.phoneInfoOptions(),\n              'phoneInfoOptions'),\n          fireauth.args.applicationVerifier()\n        ]\n      }\n    });\n\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.PhoneAuthCredential.prototype, {\n     toPlainObject: {\n        name: 'toJSON',\n        // This shouldn't take an argument but a blank string is being passed\n        // on JSON.stringify and causing this to fail with an argument error.\n        // So allow an optional string.\n        args: [fireauth.args.string(null, true)]\n      }\n    });\n\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.AuthError.prototype, {\n      toJSON: {\n        name: 'toJSON',\n        // This shouldn't take an argument but a blank string is being passed\n        // on JSON.stringify and causing this to fail with an argument error.\n        // So allow an optional string.\n        args: [fireauth.args.string(null, true)]\n      }\n    });\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.AuthErrorWithCredential.prototype, {\n      toJSON: {\n        name: 'toJSON',\n        // This shouldn't take an argument but a blank string is being passed\n        // on JSON.stringify and causing this to fail with an argument error.\n        // So allow an optional string.\n        args: [fireauth.args.string(null, true)]\n      }\n    });\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.InvalidOriginError.prototype, {\n      toJSON: {\n        name: 'toJSON',\n        // This shouldn't take an argument but a blank string is being passed\n        // on JSON.stringify and causing this to fail with an argument error.\n        // So allow an optional string.\n        args: [fireauth.args.string(null, true)]\n      }\n    });\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.MultiFactorError.prototype, {\n      toJSON: {\n        name: 'toJSON',\n        // This shouldn't take an argument but a blank string is being passed\n        // on JSON.stringify and causing this to fail with an argument error.\n        // So allow an optional string.\n        args: [fireauth.args.string(null, true)]\n      }\n    });\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.MultiFactorResolver.prototype, {\n      resolveSignIn: {\n        name: 'resolveSignIn',\n        args: [fireauth.args.multiFactorAssertion()]\n      }\n    });\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.MultiFactorUser.prototype, {\n      getSession: {\n        name: 'getSession',\n        args: []\n      },\n      enroll: {\n        name: 'enroll',\n        args: [\n          fireauth.args.multiFactorAssertion(),\n          fireauth.args.string('displayName', true)\n        ]\n      },\n      unenroll: {\n        name: 'unenroll',\n        args: [\n          fireauth.args.or(\n              fireauth.args.multiFactorInfo(),\n              fireauth.args.string(),\n              'multiFactorInfoIdentifier')\n        ]\n      }\n    });\n\nfireauth.exportlib.exportPrototypeMethods(\n    fireauth.RecaptchaVerifier.prototype, {\n      clear: {\n        name: 'clear',\n        args: []\n      },\n      render: {\n        name: 'render',\n        args: []\n      },\n      verify: {\n        name: 'verify',\n        args: []\n      }\n    });\n\nfireauth.exportlib.exportFunction(\n    fireauth.ActionCodeURL, 'parseLink',\n    fireauth.ActionCodeURL.parseLink, [fireauth.args.string('link')]);\n\nfireauth.exportlib.exportFunction(\n    fireauth.PhoneMultiFactorGenerator, 'assertion',\n    fireauth.PhoneMultiFactorGenerator.assertion,\n    [fireauth.args.authCredential(fireauth.idp.ProviderId.PHONE)]);\n\n\n(function() {\n  if (typeof firebase === 'undefined' || !firebase.INTERNAL ||\n      !firebase.INTERNAL.registerComponent) {\n    throw new Error('Cannot find the firebase namespace; be sure to include ' +\n        'firebase-app.js before this library.');\n  } else {\n    var namespace = {\n      // Exports firebase.auth.ActionCodeInfo.Operation.\n      'ActionCodeInfo': {\n        'Operation': {\n          'EMAIL_SIGNIN': fireauth.ActionCodeInfo.Operation.EMAIL_SIGNIN,\n          'PASSWORD_RESET': fireauth.ActionCodeInfo.Operation.PASSWORD_RESET,\n          'RECOVER_EMAIL': fireauth.ActionCodeInfo.Operation.RECOVER_EMAIL,\n          'REVERT_SECOND_FACTOR_ADDITION':\n              fireauth.ActionCodeInfo.Operation.REVERT_SECOND_FACTOR_ADDITION,\n          'VERIFY_AND_CHANGE_EMAIL':\n              fireauth.ActionCodeInfo.Operation.VERIFY_AND_CHANGE_EMAIL,\n          'VERIFY_EMAIL': fireauth.ActionCodeInfo.Operation.VERIFY_EMAIL\n        }\n      },\n      'Auth': fireauth.Auth,\n      'AuthCredential': fireauth.AuthCredential,\n      'Error': fireauth.AuthError\n    };\n    fireauth.exportlib.exportFunction(namespace,\n        'EmailAuthProvider', fireauth.EmailAuthProvider, []);\n    fireauth.exportlib.exportFunction(namespace,\n        'FacebookAuthProvider', fireauth.FacebookAuthProvider, []);\n    fireauth.exportlib.exportFunction(namespace,\n        'GithubAuthProvider', fireauth.GithubAuthProvider, []);\n    fireauth.exportlib.exportFunction(namespace,\n        'GoogleAuthProvider', fireauth.GoogleAuthProvider, []);\n    fireauth.exportlib.exportFunction(namespace,\n        'TwitterAuthProvider', fireauth.TwitterAuthProvider, []);\n    fireauth.exportlib.exportFunction(namespace,\n        'OAuthProvider', fireauth.OAuthProvider, [\n          fireauth.args.string('providerId')\n        ]);\n    fireauth.exportlib.exportFunction(namespace,\n        'SAMLAuthProvider', fireauth.SAMLAuthProvider, [\n          fireauth.args.string('providerId')\n        ]);\n    fireauth.exportlib.exportFunction(namespace,\n        'PhoneAuthProvider', fireauth.PhoneAuthProvider, [\n          fireauth.args.firebaseAuth(true)\n        ]);\n    fireauth.exportlib.exportFunction(namespace,\n        'RecaptchaVerifier', fireauth.RecaptchaVerifier, [\n          fireauth.args.or(\n              fireauth.args.string(),\n              fireauth.args.element(),\n              'recaptchaContainer'),\n          fireauth.args.object('recaptchaParameters', true),\n          fireauth.args.firebaseApp(true)\n        ]);\n    fireauth.exportlib.exportFunction(namespace,\n        'ActionCodeURL', fireauth.ActionCodeURL, []);\n    fireauth.exportlib.exportFunction(namespace,\n        'PhoneMultiFactorGenerator', fireauth.PhoneMultiFactorGenerator, []);\n\n    // Create auth components to register with firebase.\n    // Provides Auth public APIs.\n    const authComponent = { \n      'name': fireauth.exportlib.AUTH_TYPE,\n      'instanceFactory': function(container) {\n        var app = container['getProvider']('app')['getImmediate']();\n        return new fireauth.Auth(app);\n      },\n      'multipleInstances': false,\n      'serviceProps': namespace,\n      'instantiationMode': 'LAZY',\n      'type':  'PUBLIC'\n    };\n  \n    // Provides Auth internal APIs.\n    const authInteropComponent = { \n      'name': 'auth-internal',\n      'instanceFactory': function(container) {\n        var auth = container['getProvider'](fireauth.exportlib.AUTH_TYPE)['getImmediate']();\n        return {\n          'getUid': goog.bind(auth.getUid, auth),\n          'getToken': goog.bind(auth.getIdTokenInternal, auth),\n          'addAuthTokenListener':\n            goog.bind(auth.addAuthTokenListenerInternal, auth),\n          'removeAuthTokenListener':\n            goog.bind(auth.removeAuthTokenListenerInternal, auth)\n        };\n      },\n      'multipleInstances': false,\n      'instantiationMode': 'LAZY',\n      'type':  'PRIVATE'\n    };\n  \n    firebase.INTERNAL.registerComponent(authComponent);\n    firebase.INTERNAL.registerComponent(authInteropComponent);\n    firebase.registerVersion('@firebase/auth', AUTH_NPM_PACKAGE_VERSION);\n\n    // Expose User as firebase.User.\n    firebase.INTERNAL.extendNamespace({\n      'User': fireauth.AuthUser\n    });\n  }\n})();","// shim for using process in browser\nvar process = module.exports = {};\n\n// cached from whatever global is present so that test runners that stub it\n// don't break things.  But we need to wrap it in a try catch in case it is\n// wrapped in strict mode code which doesn't define any globals.  It's inside a\n// function because try/catches deoptimize in certain engines.\n\nvar cachedSetTimeout;\nvar cachedClearTimeout;\n\nfunction defaultSetTimout() {\n    throw new Error('setTimeout has not been defined');\n}\nfunction defaultClearTimeout () {\n    throw new Error('clearTimeout has not been defined');\n}\n(function () {\n    try {\n        if (typeof setTimeout === 'function') {\n            cachedSetTimeout = setTimeout;\n        } else {\n            cachedSetTimeout = defaultSetTimout;\n        }\n    } catch (e) {\n        cachedSetTimeout = defaultSetTimout;\n    }\n    try {\n        if (typeof clearTimeout === 'function') {\n            cachedClearTimeout = clearTimeout;\n        } else {\n            cachedClearTimeout = defaultClearTimeout;\n        }\n    } catch (e) {\n        cachedClearTimeout = defaultClearTimeout;\n    }\n} ())\nfunction runTimeout(fun) {\n    if (cachedSetTimeout === setTimeout) {\n        //normal enviroments in sane situations\n        return setTimeout(fun, 0);\n    }\n    // if setTimeout wasn't available but was latter defined\n    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {\n        cachedSetTimeout = setTimeout;\n        return setTimeout(fun, 0);\n    }\n    try {\n        // when when somebody has screwed with setTimeout but no I.E. maddness\n        return cachedSetTimeout(fun, 0);\n    } catch(e){\n        try {\n            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally\n            return cachedSetTimeout.call(null, fun, 0);\n        } catch(e){\n            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error\n            return cachedSetTimeout.call(this, fun, 0);\n        }\n    }\n\n\n}\nfunction runClearTimeout(marker) {\n    if (cachedClearTimeout === clearTimeout) {\n        //normal enviroments in sane situations\n        return clearTimeout(marker);\n    }\n    // if clearTimeout wasn't available but was latter defined\n    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {\n        cachedClearTimeout = clearTimeout;\n        return clearTimeout(marker);\n    }\n    try {\n        // when when somebody has screwed with setTimeout but no I.E. maddness\n        return cachedClearTimeout(marker);\n    } catch (e){\n        try {\n            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally\n            return cachedClearTimeout.call(null, marker);\n        } catch (e){\n            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.\n            // Some versions of I.E. have different rules for clearTimeout vs setTimeout\n            return cachedClearTimeout.call(this, marker);\n        }\n    }\n\n\n\n}\nvar queue = [];\nvar draining = false;\nvar currentQueue;\nvar queueIndex = -1;\n\nfunction cleanUpNextTick() {\n    if (!draining || !currentQueue) {\n        return;\n    }\n    draining = false;\n    if (currentQueue.length) {\n        queue = currentQueue.concat(queue);\n    } else {\n        queueIndex = -1;\n    }\n    if (queue.length) {\n        drainQueue();\n    }\n}\n\nfunction drainQueue() {\n    if (draining) {\n        return;\n    }\n    var timeout = runTimeout(cleanUpNextTick);\n    draining = true;\n\n    var len = queue.length;\n    while(len) {\n        currentQueue = queue;\n        queue = [];\n        while (++queueIndex < len) {\n            if (currentQueue) {\n                currentQueue[queueIndex].run();\n            }\n        }\n        queueIndex = -1;\n        len = queue.length;\n    }\n    currentQueue = null;\n    draining = false;\n    runClearTimeout(timeout);\n}\n\nprocess.nextTick = function (fun) {\n    var args = new Array(arguments.length - 1);\n    if (arguments.length > 1) {\n        for (var i = 1; i < arguments.length; i++) {\n            args[i - 1] = arguments[i];\n        }\n    }\n    queue.push(new Item(fun, args));\n    if (queue.length === 1 && !draining) {\n        runTimeout(drainQueue);\n    }\n};\n\n// v8 likes predictible objects\nfunction Item(fun, array) {\n    this.fun = fun;\n    this.array = array;\n}\nItem.prototype.run = function () {\n    this.fun.apply(null, this.array);\n};\nprocess.title = 'browser';\nprocess.browser = true;\nprocess.env = {};\nprocess.argv = [];\nprocess.version = ''; // empty string to avoid regexp issues\nprocess.versions = {};\n\nfunction noop() {}\n\nprocess.on = noop;\nprocess.addListener = noop;\nprocess.once = noop;\nprocess.off = noop;\nprocess.removeListener = noop;\nprocess.removeAllListeners = noop;\nprocess.emit = noop;\nprocess.prependListener = noop;\nprocess.prependOnceListener = noop;\n\nprocess.listeners = function (name) { return [] }\n\nprocess.binding = function (name) {\n    throw new Error('process.binding is not supported');\n};\n\nprocess.cwd = function () { return '/' };\nprocess.chdir = function (dir) {\n    throw new Error('process.chdir is not supported');\n};\nprocess.umask = function() { return 0; };\n","/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * The base implementation of `_.has` without support for deep paths.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\nfunction baseHas(object, key) {\n  return object != null && hasOwnProperty.call(object, key);\n}\n\nmodule.exports = baseHas;\n","var Symbol = require('./_Symbol');\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar nativeObjectToString = objectProto.toString;\n\n/** Built-in value references. */\nvar symToStringTag = Symbol ? Symbol.toStringTag : undefined;\n\n/**\n * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the raw `toStringTag`.\n */\nfunction getRawTag(value) {\n  var isOwn = hasOwnProperty.call(value, symToStringTag),\n      tag = value[symToStringTag];\n\n  try {\n    value[symToStringTag] = undefined;\n    var unmasked = true;\n  } catch (e) {}\n\n  var result = nativeObjectToString.call(value);\n  if (unmasked) {\n    if (isOwn) {\n      value[symToStringTag] = tag;\n    } else {\n      delete value[symToStringTag];\n    }\n  }\n  return result;\n}\n\nmodule.exports = getRawTag;\n","/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar nativeObjectToString = objectProto.toString;\n\n/**\n * Converts `value` to a string using `Object.prototype.toString`.\n *\n * @private\n * @param {*} value The value to convert.\n * @returns {string} Returns the converted string.\n */\nfunction objectToString(value) {\n  return nativeObjectToString.call(value);\n}\n\nmodule.exports = objectToString;\n","var memoizeCapped = require('./_memoizeCapped');\n\n/** Used to match property names within property paths. */\nvar rePropName = /[^.[\\]]+|\\[(?:(-?\\d+(?:\\.\\d+)?)|([\"'])((?:(?!\\2)[^\\\\]|\\\\.)*?)\\2)\\]|(?=(?:\\.|\\[\\])(?:\\.|\\[\\]|$))/g;\n\n/** Used to match backslashes in property paths. */\nvar reEscapeChar = /\\\\(\\\\)?/g;\n\n/**\n * Converts `string` to a property path array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the property path array.\n */\nvar stringToPath = memoizeCapped(function(string) {\n  var result = [];\n  if (string.charCodeAt(0) === 46 /* . */) {\n    result.push('');\n  }\n  string.replace(rePropName, function(match, number, quote, subString) {\n    result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));\n  });\n  return result;\n});\n\nmodule.exports = stringToPath;\n","var memoize = require('./memoize');\n\n/** Used as the maximum memoize cache size. */\nvar MAX_MEMOIZE_SIZE = 500;\n\n/**\n * A specialized version of `_.memoize` which clears the memoized function's\n * cache when it exceeds `MAX_MEMOIZE_SIZE`.\n *\n * @private\n * @param {Function} func The function to have its output memoized.\n * @returns {Function} Returns the new memoized function.\n */\nfunction memoizeCapped(func) {\n  var result = memoize(func, function(key) {\n    if (cache.size === MAX_MEMOIZE_SIZE) {\n      cache.clear();\n    }\n    return key;\n  });\n\n  var cache = result.cache;\n  return result;\n}\n\nmodule.exports = memoizeCapped;\n","var MapCache = require('./_MapCache');\n\n/** Error message constants. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/**\n * Creates a function that memoizes the result of `func`. If `resolver` is\n * provided, it determines the cache key for storing the result based on the\n * arguments provided to the memoized function. By default, the first argument\n * provided to the memoized function is used as the map cache key. The `func`\n * is invoked with the `this` binding of the memoized function.\n *\n * **Note:** The cache is exposed as the `cache` property on the memoized\n * function. Its creation may be customized by replacing the `_.memoize.Cache`\n * constructor with one whose instances implement the\n * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)\n * method interface of `clear`, `delete`, `get`, `has`, and `set`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to have its output memoized.\n * @param {Function} [resolver] The function to resolve the cache key.\n * @returns {Function} Returns the new memoized function.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n * var other = { 'c': 3, 'd': 4 };\n *\n * var values = _.memoize(_.values);\n * values(object);\n * // => [1, 2]\n *\n * values(other);\n * // => [3, 4]\n *\n * object.a = 2;\n * values(object);\n * // => [1, 2]\n *\n * // Modify the result cache.\n * values.cache.set(object, ['a', 'b']);\n * values(object);\n * // => ['a', 'b']\n *\n * // Replace `_.memoize.Cache`.\n * _.memoize.Cache = WeakMap;\n */\nfunction memoize(func, resolver) {\n  if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  var memoized = function() {\n    var args = arguments,\n        key = resolver ? resolver.apply(this, args) : args[0],\n        cache = memoized.cache;\n\n    if (cache.has(key)) {\n      return cache.get(key);\n    }\n    var result = func.apply(this, args);\n    memoized.cache = cache.set(key, result) || cache;\n    return result;\n  };\n  memoized.cache = new (memoize.Cache || MapCache);\n  return memoized;\n}\n\n// Expose `MapCache`.\nmemoize.Cache = MapCache;\n\nmodule.exports = memoize;\n","var Hash = require('./_Hash'),\n    ListCache = require('./_ListCache'),\n    Map = require('./_Map');\n\n/**\n * Removes all key-value entries from the map.\n *\n * @private\n * @name clear\n * @memberOf MapCache\n */\nfunction mapCacheClear() {\n  this.size = 0;\n  this.__data__ = {\n    'hash': new Hash,\n    'map': new (Map || ListCache),\n    'string': new Hash\n  };\n}\n\nmodule.exports = mapCacheClear;\n","var hashClear = require('./_hashClear'),\n    hashDelete = require('./_hashDelete'),\n    hashGet = require('./_hashGet'),\n    hashHas = require('./_hashHas'),\n    hashSet = require('./_hashSet');\n\n/**\n * Creates a hash object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction Hash(entries) {\n  var index = -1,\n      length = entries == null ? 0 : entries.length;\n\n  this.clear();\n  while (++index < length) {\n    var entry = entries[index];\n    this.set(entry[0], entry[1]);\n  }\n}\n\n// Add methods to `Hash`.\nHash.prototype.clear = hashClear;\nHash.prototype['delete'] = hashDelete;\nHash.prototype.get = hashGet;\nHash.prototype.has = hashHas;\nHash.prototype.set = hashSet;\n\nmodule.exports = Hash;\n","var nativeCreate = require('./_nativeCreate');\n\n/**\n * Removes all key-value entries from the hash.\n *\n * @private\n * @name clear\n * @memberOf Hash\n */\nfunction hashClear() {\n  this.__data__ = nativeCreate ? nativeCreate(null) : {};\n  this.size = 0;\n}\n\nmodule.exports = hashClear;\n","var isFunction = require('./isFunction'),\n    isMasked = require('./_isMasked'),\n    isObject = require('./isObject'),\n    toSource = require('./_toSource');\n\n/**\n * Used to match `RegExp`\n * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).\n */\nvar reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g;\n\n/** Used to detect host constructors (Safari). */\nvar reIsHostCtor = /^\\[object .+?Constructor\\]$/;\n\n/** Used for built-in method references. */\nvar funcProto = Function.prototype,\n    objectProto = Object.prototype;\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = funcProto.toString;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/** Used to detect if a method is native. */\nvar reIsNative = RegExp('^' +\n  funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&')\n  .replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$'\n);\n\n/**\n * The base implementation of `_.isNative` without bad shim checks.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a native function,\n *  else `false`.\n */\nfunction baseIsNative(value) {\n  if (!isObject(value) || isMasked(value)) {\n    return false;\n  }\n  var pattern = isFunction(value) ? reIsNative : reIsHostCtor;\n  return pattern.test(toSource(value));\n}\n\nmodule.exports = baseIsNative;\n","var coreJsData = require('./_coreJsData');\n\n/** Used to detect methods masquerading as native. */\nvar maskSrcKey = (function() {\n  var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');\n  return uid ? ('Symbol(src)_1.' + uid) : '';\n}());\n\n/**\n * Checks if `func` has its source masked.\n *\n * @private\n * @param {Function} func The function to check.\n * @returns {boolean} Returns `true` if `func` is masked, else `false`.\n */\nfunction isMasked(func) {\n  return !!maskSrcKey && (maskSrcKey in func);\n}\n\nmodule.exports = isMasked;\n","var root = require('./_root');\n\n/** Used to detect overreaching core-js shims. */\nvar coreJsData = root['__core-js_shared__'];\n\nmodule.exports = coreJsData;\n","/**\n * Gets the value at `key` of `object`.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {string} key The key of the property to get.\n * @returns {*} Returns the property value.\n */\nfunction getValue(object, key) {\n  return object == null ? undefined : object[key];\n}\n\nmodule.exports = getValue;\n","/**\n * Removes `key` and its value from the hash.\n *\n * @private\n * @name delete\n * @memberOf Hash\n * @param {Object} hash The hash to modify.\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction hashDelete(key) {\n  var result = this.has(key) && delete this.__data__[key];\n  this.size -= result ? 1 : 0;\n  return result;\n}\n\nmodule.exports = hashDelete;\n","var nativeCreate = require('./_nativeCreate');\n\n/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Gets the hash value for `key`.\n *\n * @private\n * @name get\n * @memberOf Hash\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction hashGet(key) {\n  var data = this.__data__;\n  if (nativeCreate) {\n    var result = data[key];\n    return result === HASH_UNDEFINED ? undefined : result;\n  }\n  return hasOwnProperty.call(data, key) ? data[key] : undefined;\n}\n\nmodule.exports = hashGet;\n","var nativeCreate = require('./_nativeCreate');\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Checks if a hash value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Hash\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction hashHas(key) {\n  var data = this.__data__;\n  return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);\n}\n\nmodule.exports = hashHas;\n","var nativeCreate = require('./_nativeCreate');\n\n/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/**\n * Sets the hash `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Hash\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the hash instance.\n */\nfunction hashSet(key, value) {\n  var data = this.__data__;\n  this.size += this.has(key) ? 0 : 1;\n  data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;\n  return this;\n}\n\nmodule.exports = hashSet;\n","/**\n * Removes all key-value entries from the list cache.\n *\n * @private\n * @name clear\n * @memberOf ListCache\n */\nfunction listCacheClear() {\n  this.__data__ = [];\n  this.size = 0;\n}\n\nmodule.exports = listCacheClear;\n","var assocIndexOf = require('./_assocIndexOf');\n\n/** Used for built-in method references. */\nvar arrayProto = Array.prototype;\n\n/** Built-in value references. */\nvar splice = arrayProto.splice;\n\n/**\n * Removes `key` and its value from the list cache.\n *\n * @private\n * @name delete\n * @memberOf ListCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction listCacheDelete(key) {\n  var data = this.__data__,\n      index = assocIndexOf(data, key);\n\n  if (index < 0) {\n    return false;\n  }\n  var lastIndex = data.length - 1;\n  if (index == lastIndex) {\n    data.pop();\n  } else {\n    splice.call(data, index, 1);\n  }\n  --this.size;\n  return true;\n}\n\nmodule.exports = listCacheDelete;\n","var assocIndexOf = require('./_assocIndexOf');\n\n/**\n * Gets the list cache value for `key`.\n *\n * @private\n * @name get\n * @memberOf ListCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction listCacheGet(key) {\n  var data = this.__data__,\n      index = assocIndexOf(data, key);\n\n  return index < 0 ? undefined : data[index][1];\n}\n\nmodule.exports = listCacheGet;\n","var assocIndexOf = require('./_assocIndexOf');\n\n/**\n * Checks if a list cache value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf ListCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction listCacheHas(key) {\n  return assocIndexOf(this.__data__, key) > -1;\n}\n\nmodule.exports = listCacheHas;\n","var assocIndexOf = require('./_assocIndexOf');\n\n/**\n * Sets the list cache `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf ListCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the list cache instance.\n */\nfunction listCacheSet(key, value) {\n  var data = this.__data__,\n      index = assocIndexOf(data, key);\n\n  if (index < 0) {\n    ++this.size;\n    data.push([key, value]);\n  } else {\n    data[index][1] = value;\n  }\n  return this;\n}\n\nmodule.exports = listCacheSet;\n","var getMapData = require('./_getMapData');\n\n/**\n * Removes `key` and its value from the map.\n *\n * @private\n * @name delete\n * @memberOf MapCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction mapCacheDelete(key) {\n  var result = getMapData(this, key)['delete'](key);\n  this.size -= result ? 1 : 0;\n  return result;\n}\n\nmodule.exports = mapCacheDelete;\n","/**\n * Checks if `value` is suitable for use as unique object key.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is suitable, else `false`.\n */\nfunction isKeyable(value) {\n  var type = typeof value;\n  return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')\n    ? (value !== '__proto__')\n    : (value === null);\n}\n\nmodule.exports = isKeyable;\n","var getMapData = require('./_getMapData');\n\n/**\n * Gets the map value for `key`.\n *\n * @private\n * @name get\n * @memberOf MapCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction mapCacheGet(key) {\n  return getMapData(this, key).get(key);\n}\n\nmodule.exports = mapCacheGet;\n","var getMapData = require('./_getMapData');\n\n/**\n * Checks if a map value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf MapCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction mapCacheHas(key) {\n  return getMapData(this, key).has(key);\n}\n\nmodule.exports = mapCacheHas;\n","var getMapData = require('./_getMapData');\n\n/**\n * Sets the map `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf MapCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the map cache instance.\n */\nfunction mapCacheSet(key, value) {\n  var data = getMapData(this, key),\n      size = data.size;\n\n  data.set(key, value);\n  this.size += data.size == size ? 0 : 1;\n  return this;\n}\n\nmodule.exports = mapCacheSet;\n","var Symbol = require('./_Symbol'),\n    arrayMap = require('./_arrayMap'),\n    isArray = require('./isArray'),\n    isSymbol = require('./isSymbol');\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0;\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = Symbol ? Symbol.prototype : undefined,\n    symbolToString = symbolProto ? symbolProto.toString : undefined;\n\n/**\n * The base implementation of `_.toString` which doesn't convert nullish\n * values to empty strings.\n *\n * @private\n * @param {*} value The value to process.\n * @returns {string} Returns the string.\n */\nfunction baseToString(value) {\n  // Exit early for strings to avoid a performance hit in some environments.\n  if (typeof value == 'string') {\n    return value;\n  }\n  if (isArray(value)) {\n    // Recursively convert values (susceptible to call stack limits).\n    return arrayMap(value, baseToString) + '';\n  }\n  if (isSymbol(value)) {\n    return symbolToString ? symbolToString.call(value) : '';\n  }\n  var result = (value + '');\n  return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n}\n\nmodule.exports = baseToString;\n","/**\n * A specialized version of `_.map` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n */\nfunction arrayMap(array, iteratee) {\n  var index = -1,\n      length = array == null ? 0 : array.length,\n      result = Array(length);\n\n  while (++index < length) {\n    result[index] = iteratee(array[index], index, array);\n  }\n  return result;\n}\n\nmodule.exports = arrayMap;\n","var baseGetTag = require('./_baseGetTag'),\n    isObjectLike = require('./isObjectLike');\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]';\n\n/**\n * The base implementation of `_.isArguments`.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n */\nfunction baseIsArguments(value) {\n  return isObjectLike(value) && baseGetTag(value) == argsTag;\n}\n\nmodule.exports = baseIsArguments;\n","var getNative = require('./_getNative');\n\nvar defineProperty = (function() {\n  try {\n    var func = getNative(Object, 'defineProperty');\n    func({}, '', {});\n    return func;\n  } catch (e) {}\n}());\n\nmodule.exports = defineProperty;\n","var createBaseFor = require('./_createBaseFor');\n\n/**\n * The base implementation of `baseForOwn` which iterates over `object`\n * properties returned by `keysFunc` and invokes `iteratee` for each property.\n * Iteratee functions may exit iteration early by explicitly returning `false`.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @returns {Object} Returns `object`.\n */\nvar baseFor = createBaseFor();\n\nmodule.exports = baseFor;\n","/**\n * Creates a base function for methods like `_.forIn` and `_.forOwn`.\n *\n * @private\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new base function.\n */\nfunction createBaseFor(fromRight) {\n  return function(object, iteratee, keysFunc) {\n    var index = -1,\n        iterable = Object(object),\n        props = keysFunc(object),\n        length = props.length;\n\n    while (length--) {\n      var key = props[fromRight ? length : ++index];\n      if (iteratee(iterable[key], key, iterable) === false) {\n        break;\n      }\n    }\n    return object;\n  };\n}\n\nmodule.exports = createBaseFor;\n","var baseTimes = require('./_baseTimes'),\n    isArguments = require('./isArguments'),\n    isArray = require('./isArray'),\n    isBuffer = require('./isBuffer'),\n    isIndex = require('./_isIndex'),\n    isTypedArray = require('./isTypedArray');\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Creates an array of the enumerable property names of the array-like `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @param {boolean} inherited Specify returning inherited property names.\n * @returns {Array} Returns the array of property names.\n */\nfunction arrayLikeKeys(value, inherited) {\n  var isArr = isArray(value),\n      isArg = !isArr && isArguments(value),\n      isBuff = !isArr && !isArg && isBuffer(value),\n      isType = !isArr && !isArg && !isBuff && isTypedArray(value),\n      skipIndexes = isArr || isArg || isBuff || isType,\n      result = skipIndexes ? baseTimes(value.length, String) : [],\n      length = result.length;\n\n  for (var key in value) {\n    if ((inherited || hasOwnProperty.call(value, key)) &&\n        !(skipIndexes && (\n           // Safari 9 has enumerable `arguments.length` in strict mode.\n           key == 'length' ||\n           // Node.js 0.10 has enumerable non-index properties on buffers.\n           (isBuff && (key == 'offset' || key == 'parent')) ||\n           // PhantomJS 2 has enumerable non-index properties on typed arrays.\n           (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||\n           // Skip index properties.\n           isIndex(key, length)\n        ))) {\n      result.push(key);\n    }\n  }\n  return result;\n}\n\nmodule.exports = arrayLikeKeys;\n","/**\n * The base implementation of `_.times` without support for iteratee shorthands\n * or max array length checks.\n *\n * @private\n * @param {number} n The number of times to invoke `iteratee`.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the array of results.\n */\nfunction baseTimes(n, iteratee) {\n  var index = -1,\n      result = Array(n);\n\n  while (++index < n) {\n    result[index] = iteratee(index);\n  }\n  return result;\n}\n\nmodule.exports = baseTimes;\n","/**\n * This method returns `false`.\n *\n * @static\n * @memberOf _\n * @since 4.13.0\n * @category Util\n * @returns {boolean} Returns `false`.\n * @example\n *\n * _.times(2, _.stubFalse);\n * // => [false, false]\n */\nfunction stubFalse() {\n  return false;\n}\n\nmodule.exports = stubFalse;\n","var baseGetTag = require('./_baseGetTag'),\n    isLength = require('./isLength'),\n    isObjectLike = require('./isObjectLike');\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n    arrayTag = '[object Array]',\n    boolTag = '[object Boolean]',\n    dateTag = '[object Date]',\n    errorTag = '[object Error]',\n    funcTag = '[object Function]',\n    mapTag = '[object Map]',\n    numberTag = '[object Number]',\n    objectTag = '[object Object]',\n    regexpTag = '[object RegExp]',\n    setTag = '[object Set]',\n    stringTag = '[object String]',\n    weakMapTag = '[object WeakMap]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n    dataViewTag = '[object DataView]',\n    float32Tag = '[object Float32Array]',\n    float64Tag = '[object Float64Array]',\n    int8Tag = '[object Int8Array]',\n    int16Tag = '[object Int16Array]',\n    int32Tag = '[object Int32Array]',\n    uint8Tag = '[object Uint8Array]',\n    uint8ClampedTag = '[object Uint8ClampedArray]',\n    uint16Tag = '[object Uint16Array]',\n    uint32Tag = '[object Uint32Array]';\n\n/** Used to identify `toStringTag` values of typed arrays. */\nvar typedArrayTags = {};\ntypedArrayTags[float32Tag] = typedArrayTags[float64Tag] =\ntypedArrayTags[int8Tag] = typedArrayTags[int16Tag] =\ntypedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =\ntypedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =\ntypedArrayTags[uint32Tag] = true;\ntypedArrayTags[argsTag] = typedArrayTags[arrayTag] =\ntypedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =\ntypedArrayTags[dataViewTag] = typedArrayTags[dateTag] =\ntypedArrayTags[errorTag] = typedArrayTags[funcTag] =\ntypedArrayTags[mapTag] = typedArrayTags[numberTag] =\ntypedArrayTags[objectTag] = typedArrayTags[regexpTag] =\ntypedArrayTags[setTag] = typedArrayTags[stringTag] =\ntypedArrayTags[weakMapTag] = false;\n\n/**\n * The base implementation of `_.isTypedArray` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n */\nfunction baseIsTypedArray(value) {\n  return isObjectLike(value) &&\n    isLength(value.length) && !!typedArrayTags[baseGetTag(value)];\n}\n\nmodule.exports = baseIsTypedArray;\n","/**\n * The base implementation of `_.unary` without support for storing metadata.\n *\n * @private\n * @param {Function} func The function to cap arguments for.\n * @returns {Function} Returns the new capped function.\n */\nfunction baseUnary(func) {\n  return function(value) {\n    return func(value);\n  };\n}\n\nmodule.exports = baseUnary;\n","var freeGlobal = require('./_freeGlobal');\n\n/** Detect free variable `exports`. */\nvar freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;\n\n/** Detect free variable `module`. */\nvar freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;\n\n/** Detect the popular CommonJS extension `module.exports`. */\nvar moduleExports = freeModule && freeModule.exports === freeExports;\n\n/** Detect free variable `process` from Node.js. */\nvar freeProcess = moduleExports && freeGlobal.process;\n\n/** Used to access faster Node.js helpers. */\nvar nodeUtil = (function() {\n  try {\n    // Use `util.types` for Node.js 10+.\n    var types = freeModule && freeModule.require && freeModule.require('util').types;\n\n    if (types) {\n      return types;\n    }\n\n    // Legacy `process.binding('util')` for Node.js < 10.\n    return freeProcess && freeProcess.binding && freeProcess.binding('util');\n  } catch (e) {}\n}());\n\nmodule.exports = nodeUtil;\n","var isPrototype = require('./_isPrototype'),\n    nativeKeys = require('./_nativeKeys');\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\nfunction baseKeys(object) {\n  if (!isPrototype(object)) {\n    return nativeKeys(object);\n  }\n  var result = [];\n  for (var key in Object(object)) {\n    if (hasOwnProperty.call(object, key) && key != 'constructor') {\n      result.push(key);\n    }\n  }\n  return result;\n}\n\nmodule.exports = baseKeys;\n","/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Checks if `value` is likely a prototype object.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.\n */\nfunction isPrototype(value) {\n  var Ctor = value && value.constructor,\n      proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;\n\n  return value === proto;\n}\n\nmodule.exports = isPrototype;\n","var overArg = require('./_overArg');\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeKeys = overArg(Object.keys, Object);\n\nmodule.exports = nativeKeys;\n","/**\n * Creates a unary function that invokes `func` with its argument transformed.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {Function} transform The argument transform.\n * @returns {Function} Returns the new function.\n */\nfunction overArg(func, transform) {\n  return function(arg) {\n    return func(transform(arg));\n  };\n}\n\nmodule.exports = overArg;\n","var isFunction = require('./isFunction'),\n    isLength = require('./isLength');\n\n/**\n * Checks if `value` is array-like. A value is considered array-like if it's\n * not a function and has a `value.length` that's an integer greater than or\n * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\n * @example\n *\n * _.isArrayLike([1, 2, 3]);\n * // => true\n *\n * _.isArrayLike(document.body.children);\n * // => true\n *\n * _.isArrayLike('abc');\n * // => true\n *\n * _.isArrayLike(_.noop);\n * // => false\n */\nfunction isArrayLike(value) {\n  return value != null && isLength(value.length) && !isFunction(value);\n}\n\nmodule.exports = isArrayLike;\n","var baseIsMatch = require('./_baseIsMatch'),\n    getMatchData = require('./_getMatchData'),\n    matchesStrictComparable = require('./_matchesStrictComparable');\n\n/**\n * The base implementation of `_.matches` which doesn't clone `source`.\n *\n * @private\n * @param {Object} source The object of property values to match.\n * @returns {Function} Returns the new spec function.\n */\nfunction baseMatches(source) {\n  var matchData = getMatchData(source);\n  if (matchData.length == 1 && matchData[0][2]) {\n    return matchesStrictComparable(matchData[0][0], matchData[0][1]);\n  }\n  return function(object) {\n    return object === source || baseIsMatch(object, source, matchData);\n  };\n}\n\nmodule.exports = baseMatches;\n","var Stack = require('./_Stack'),\n    baseIsEqual = require('./_baseIsEqual');\n\n/** Used to compose bitmasks for value comparisons. */\nvar COMPARE_PARTIAL_FLAG = 1,\n    COMPARE_UNORDERED_FLAG = 2;\n\n/**\n * The base implementation of `_.isMatch` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @param {Array} matchData The property names, values, and compare flags to match.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n */\nfunction baseIsMatch(object, source, matchData, customizer) {\n  var index = matchData.length,\n      length = index,\n      noCustomizer = !customizer;\n\n  if (object == null) {\n    return !length;\n  }\n  object = Object(object);\n  while (index--) {\n    var data = matchData[index];\n    if ((noCustomizer && data[2])\n          ? data[1] !== object[data[0]]\n          : !(data[0] in object)\n        ) {\n      return false;\n    }\n  }\n  while (++index < length) {\n    data = matchData[index];\n    var key = data[0],\n        objValue = object[key],\n        srcValue = data[1];\n\n    if (noCustomizer && data[2]) {\n      if (objValue === undefined && !(key in object)) {\n        return false;\n      }\n    } else {\n      var stack = new Stack;\n      if (customizer) {\n        var result = customizer(objValue, srcValue, key, object, source, stack);\n      }\n      if (!(result === undefined\n            ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)\n            : result\n          )) {\n        return false;\n      }\n    }\n  }\n  return true;\n}\n\nmodule.exports = baseIsMatch;\n","var ListCache = require('./_ListCache');\n\n/**\n * Removes all key-value entries from the stack.\n *\n * @private\n * @name clear\n * @memberOf Stack\n */\nfunction stackClear() {\n  this.__data__ = new ListCache;\n  this.size = 0;\n}\n\nmodule.exports = stackClear;\n","/**\n * Removes `key` and its value from the stack.\n *\n * @private\n * @name delete\n * @memberOf Stack\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction stackDelete(key) {\n  var data = this.__data__,\n      result = data['delete'](key);\n\n  this.size = data.size;\n  return result;\n}\n\nmodule.exports = stackDelete;\n","/**\n * Gets the stack value for `key`.\n *\n * @private\n * @name get\n * @memberOf Stack\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction stackGet(key) {\n  return this.__data__.get(key);\n}\n\nmodule.exports = stackGet;\n","/**\n * Checks if a stack value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Stack\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction stackHas(key) {\n  return this.__data__.has(key);\n}\n\nmodule.exports = stackHas;\n","var ListCache = require('./_ListCache'),\n    Map = require('./_Map'),\n    MapCache = require('./_MapCache');\n\n/** Used as the size to enable large array optimizations. */\nvar LARGE_ARRAY_SIZE = 200;\n\n/**\n * Sets the stack `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Stack\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the stack cache instance.\n */\nfunction stackSet(key, value) {\n  var data = this.__data__;\n  if (data instanceof ListCache) {\n    var pairs = data.__data__;\n    if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {\n      pairs.push([key, value]);\n      this.size = ++data.size;\n      return this;\n    }\n    data = this.__data__ = new MapCache(pairs);\n  }\n  data.set(key, value);\n  this.size = data.size;\n  return this;\n}\n\nmodule.exports = stackSet;\n","var Stack = require('./_Stack'),\n    equalArrays = require('./_equalArrays'),\n    equalByTag = require('./_equalByTag'),\n    equalObjects = require('./_equalObjects'),\n    getTag = require('./_getTag'),\n    isArray = require('./isArray'),\n    isBuffer = require('./isBuffer'),\n    isTypedArray = require('./isTypedArray');\n\n/** Used to compose bitmasks for value comparisons. */\nvar COMPARE_PARTIAL_FLAG = 1;\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n    arrayTag = '[object Array]',\n    objectTag = '[object Object]';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * A specialized version of `baseIsEqual` for arrays and objects which performs\n * deep comparisons and tracks traversed objects enabling objects with circular\n * references to be compared.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} [stack] Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {\n  var objIsArr = isArray(object),\n      othIsArr = isArray(other),\n      objTag = objIsArr ? arrayTag : getTag(object),\n      othTag = othIsArr ? arrayTag : getTag(other);\n\n  objTag = objTag == argsTag ? objectTag : objTag;\n  othTag = othTag == argsTag ? objectTag : othTag;\n\n  var objIsObj = objTag == objectTag,\n      othIsObj = othTag == objectTag,\n      isSameTag = objTag == othTag;\n\n  if (isSameTag && isBuffer(object)) {\n    if (!isBuffer(other)) {\n      return false;\n    }\n    objIsArr = true;\n    objIsObj = false;\n  }\n  if (isSameTag && !objIsObj) {\n    stack || (stack = new Stack);\n    return (objIsArr || isTypedArray(object))\n      ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)\n      : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);\n  }\n  if (!(bitmask & COMPARE_PARTIAL_FLAG)) {\n    var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),\n        othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');\n\n    if (objIsWrapped || othIsWrapped) {\n      var objUnwrapped = objIsWrapped ? object.value() : object,\n          othUnwrapped = othIsWrapped ? other.value() : other;\n\n      stack || (stack = new Stack);\n      return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);\n    }\n  }\n  if (!isSameTag) {\n    return false;\n  }\n  stack || (stack = new Stack);\n  return equalObjects(object, other, bitmask, customizer, equalFunc, stack);\n}\n\nmodule.exports = baseIsEqualDeep;\n","var MapCache = require('./_MapCache'),\n    setCacheAdd = require('./_setCacheAdd'),\n    setCacheHas = require('./_setCacheHas');\n\n/**\n *\n * Creates an array cache object to store unique values.\n *\n * @private\n * @constructor\n * @param {Array} [values] The values to cache.\n */\nfunction SetCache(values) {\n  var index = -1,\n      length = values == null ? 0 : values.length;\n\n  this.__data__ = new MapCache;\n  while (++index < length) {\n    this.add(values[index]);\n  }\n}\n\n// Add methods to `SetCache`.\nSetCache.prototype.add = SetCache.prototype.push = setCacheAdd;\nSetCache.prototype.has = setCacheHas;\n\nmodule.exports = SetCache;\n","/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/**\n * Adds `value` to the array cache.\n *\n * @private\n * @name add\n * @memberOf SetCache\n * @alias push\n * @param {*} value The value to cache.\n * @returns {Object} Returns the cache instance.\n */\nfunction setCacheAdd(value) {\n  this.__data__.set(value, HASH_UNDEFINED);\n  return this;\n}\n\nmodule.exports = setCacheAdd;\n","/**\n * Checks if `value` is in the array cache.\n *\n * @private\n * @name has\n * @memberOf SetCache\n * @param {*} value The value to search for.\n * @returns {number} Returns `true` if `value` is found, else `false`.\n */\nfunction setCacheHas(value) {\n  return this.__data__.has(value);\n}\n\nmodule.exports = setCacheHas;\n","/**\n * A specialized version of `_.some` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n *  else `false`.\n */\nfunction arraySome(array, predicate) {\n  var index = -1,\n      length = array == null ? 0 : array.length;\n\n  while (++index < length) {\n    if (predicate(array[index], index, array)) {\n      return true;\n    }\n  }\n  return false;\n}\n\nmodule.exports = arraySome;\n","/**\n * Checks if a `cache` value for `key` exists.\n *\n * @private\n * @param {Object} cache The cache to query.\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction cacheHas(cache, key) {\n  return cache.has(key);\n}\n\nmodule.exports = cacheHas;\n","var Symbol = require('./_Symbol'),\n    Uint8Array = require('./_Uint8Array'),\n    eq = require('./eq'),\n    equalArrays = require('./_equalArrays'),\n    mapToArray = require('./_mapToArray'),\n    setToArray = require('./_setToArray');\n\n/** Used to compose bitmasks for value comparisons. */\nvar COMPARE_PARTIAL_FLAG = 1,\n    COMPARE_UNORDERED_FLAG = 2;\n\n/** `Object#toString` result references. */\nvar boolTag = '[object Boolean]',\n    dateTag = '[object Date]',\n    errorTag = '[object Error]',\n    mapTag = '[object Map]',\n    numberTag = '[object Number]',\n    regexpTag = '[object RegExp]',\n    setTag = '[object Set]',\n    stringTag = '[object String]',\n    symbolTag = '[object Symbol]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n    dataViewTag = '[object DataView]';\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = Symbol ? Symbol.prototype : undefined,\n    symbolValueOf = symbolProto ? symbolProto.valueOf : undefined;\n\n/**\n * A specialized version of `baseIsEqualDeep` for comparing objects of\n * the same `toStringTag`.\n *\n * **Note:** This function only supports comparing values with tags of\n * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {string} tag The `toStringTag` of the objects to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {\n  switch (tag) {\n    case dataViewTag:\n      if ((object.byteLength != other.byteLength) ||\n          (object.byteOffset != other.byteOffset)) {\n        return false;\n      }\n      object = object.buffer;\n      other = other.buffer;\n\n    case arrayBufferTag:\n      if ((object.byteLength != other.byteLength) ||\n          !equalFunc(new Uint8Array(object), new Uint8Array(other))) {\n        return false;\n      }\n      return true;\n\n    case boolTag:\n    case dateTag:\n    case numberTag:\n      // Coerce booleans to `1` or `0` and dates to milliseconds.\n      // Invalid dates are coerced to `NaN`.\n      return eq(+object, +other);\n\n    case errorTag:\n      return object.name == other.name && object.message == other.message;\n\n    case regexpTag:\n    case stringTag:\n      // Coerce regexes to strings and treat strings, primitives and objects,\n      // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring\n      // for more details.\n      return object == (other + '');\n\n    case mapTag:\n      var convert = mapToArray;\n\n    case setTag:\n      var isPartial = bitmask & COMPARE_PARTIAL_FLAG;\n      convert || (convert = setToArray);\n\n      if (object.size != other.size && !isPartial) {\n        return false;\n      }\n      // Assume cyclic values are equal.\n      var stacked = stack.get(object);\n      if (stacked) {\n        return stacked == other;\n      }\n      bitmask |= COMPARE_UNORDERED_FLAG;\n\n      // Recursively compare objects (susceptible to call stack limits).\n      stack.set(object, other);\n      var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);\n      stack['delete'](object);\n      return result;\n\n    case symbolTag:\n      if (symbolValueOf) {\n        return symbolValueOf.call(object) == symbolValueOf.call(other);\n      }\n  }\n  return false;\n}\n\nmodule.exports = equalByTag;\n","var root = require('./_root');\n\n/** Built-in value references. */\nvar Uint8Array = root.Uint8Array;\n\nmodule.exports = Uint8Array;\n","/**\n * Converts `map` to its key-value pairs.\n *\n * @private\n * @param {Object} map The map to convert.\n * @returns {Array} Returns the key-value pairs.\n */\nfunction mapToArray(map) {\n  var index = -1,\n      result = Array(map.size);\n\n  map.forEach(function(value, key) {\n    result[++index] = [key, value];\n  });\n  return result;\n}\n\nmodule.exports = mapToArray;\n","/**\n * Converts `set` to an array of its values.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the values.\n */\nfunction setToArray(set) {\n  var index = -1,\n      result = Array(set.size);\n\n  set.forEach(function(value) {\n    result[++index] = value;\n  });\n  return result;\n}\n\nmodule.exports = setToArray;\n","var getAllKeys = require('./_getAllKeys');\n\n/** Used to compose bitmasks for value comparisons. */\nvar COMPARE_PARTIAL_FLAG = 1;\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * A specialized version of `baseIsEqualDeep` for objects with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction equalObjects(object, other, bitmask, customizer, equalFunc, stack) {\n  var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n      objProps = getAllKeys(object),\n      objLength = objProps.length,\n      othProps = getAllKeys(other),\n      othLength = othProps.length;\n\n  if (objLength != othLength && !isPartial) {\n    return false;\n  }\n  var index = objLength;\n  while (index--) {\n    var key = objProps[index];\n    if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {\n      return false;\n    }\n  }\n  // Check that cyclic values are equal.\n  var objStacked = stack.get(object);\n  var othStacked = stack.get(other);\n  if (objStacked && othStacked) {\n    return objStacked == other && othStacked == object;\n  }\n  var result = true;\n  stack.set(object, other);\n  stack.set(other, object);\n\n  var skipCtor = isPartial;\n  while (++index < objLength) {\n    key = objProps[index];\n    var objValue = object[key],\n        othValue = other[key];\n\n    if (customizer) {\n      var compared = isPartial\n        ? customizer(othValue, objValue, key, other, object, stack)\n        : customizer(objValue, othValue, key, object, other, stack);\n    }\n    // Recursively compare objects (susceptible to call stack limits).\n    if (!(compared === undefined\n          ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))\n          : compared\n        )) {\n      result = false;\n      break;\n    }\n    skipCtor || (skipCtor = key == 'constructor');\n  }\n  if (result && !skipCtor) {\n    var objCtor = object.constructor,\n        othCtor = other.constructor;\n\n    // Non `Object` object instances with different constructors are not equal.\n    if (objCtor != othCtor &&\n        ('constructor' in object && 'constructor' in other) &&\n        !(typeof objCtor == 'function' && objCtor instanceof objCtor &&\n          typeof othCtor == 'function' && othCtor instanceof othCtor)) {\n      result = false;\n    }\n  }\n  stack['delete'](object);\n  stack['delete'](other);\n  return result;\n}\n\nmodule.exports = equalObjects;\n","var baseGetAllKeys = require('./_baseGetAllKeys'),\n    getSymbols = require('./_getSymbols'),\n    keys = require('./keys');\n\n/**\n * Creates an array of own enumerable property names and symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names and symbols.\n */\nfunction getAllKeys(object) {\n  return baseGetAllKeys(object, keys, getSymbols);\n}\n\nmodule.exports = getAllKeys;\n","var arrayPush = require('./_arrayPush'),\n    isArray = require('./isArray');\n\n/**\n * The base implementation of `getAllKeys` and `getAllKeysIn` which uses\n * `keysFunc` and `symbolsFunc` to get the enumerable property names and\n * symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @param {Function} symbolsFunc The function to get the symbols of `object`.\n * @returns {Array} Returns the array of property names and symbols.\n */\nfunction baseGetAllKeys(object, keysFunc, symbolsFunc) {\n  var result = keysFunc(object);\n  return isArray(object) ? result : arrayPush(result, symbolsFunc(object));\n}\n\nmodule.exports = baseGetAllKeys;\n","/**\n * Appends the elements of `values` to `array`.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to append.\n * @returns {Array} Returns `array`.\n */\nfunction arrayPush(array, values) {\n  var index = -1,\n      length = values.length,\n      offset = array.length;\n\n  while (++index < length) {\n    array[offset + index] = values[index];\n  }\n  return array;\n}\n\nmodule.exports = arrayPush;\n","var arrayFilter = require('./_arrayFilter'),\n    stubArray = require('./stubArray');\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Built-in value references. */\nvar propertyIsEnumerable = objectProto.propertyIsEnumerable;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeGetSymbols = Object.getOwnPropertySymbols;\n\n/**\n * Creates an array of the own enumerable symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of symbols.\n */\nvar getSymbols = !nativeGetSymbols ? stubArray : function(object) {\n  if (object == null) {\n    return [];\n  }\n  object = Object(object);\n  return arrayFilter(nativeGetSymbols(object), function(symbol) {\n    return propertyIsEnumerable.call(object, symbol);\n  });\n};\n\nmodule.exports = getSymbols;\n","/**\n * A specialized version of `_.filter` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n */\nfunction arrayFilter(array, predicate) {\n  var index = -1,\n      length = array == null ? 0 : array.length,\n      resIndex = 0,\n      result = [];\n\n  while (++index < length) {\n    var value = array[index];\n    if (predicate(value, index, array)) {\n      result[resIndex++] = value;\n    }\n  }\n  return result;\n}\n\nmodule.exports = arrayFilter;\n","/**\n * This method returns a new empty array.\n *\n * @static\n * @memberOf _\n * @since 4.13.0\n * @category Util\n * @returns {Array} Returns the new empty array.\n * @example\n *\n * var arrays = _.times(2, _.stubArray);\n *\n * console.log(arrays);\n * // => [[], []]\n *\n * console.log(arrays[0] === arrays[1]);\n * // => false\n */\nfunction stubArray() {\n  return [];\n}\n\nmodule.exports = stubArray;\n","var DataView = require('./_DataView'),\n    Map = require('./_Map'),\n    Promise = require('./_Promise'),\n    Set = require('./_Set'),\n    WeakMap = require('./_WeakMap'),\n    baseGetTag = require('./_baseGetTag'),\n    toSource = require('./_toSource');\n\n/** `Object#toString` result references. */\nvar mapTag = '[object Map]',\n    objectTag = '[object Object]',\n    promiseTag = '[object Promise]',\n    setTag = '[object Set]',\n    weakMapTag = '[object WeakMap]';\n\nvar dataViewTag = '[object DataView]';\n\n/** Used to detect maps, sets, and weakmaps. */\nvar dataViewCtorString = toSource(DataView),\n    mapCtorString = toSource(Map),\n    promiseCtorString = toSource(Promise),\n    setCtorString = toSource(Set),\n    weakMapCtorString = toSource(WeakMap);\n\n/**\n * Gets the `toStringTag` of `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\nvar getTag = baseGetTag;\n\n// Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.\nif ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||\n    (Map && getTag(new Map) != mapTag) ||\n    (Promise && getTag(Promise.resolve()) != promiseTag) ||\n    (Set && getTag(new Set) != setTag) ||\n    (WeakMap && getTag(new WeakMap) != weakMapTag)) {\n  getTag = function(value) {\n    var result = baseGetTag(value),\n        Ctor = result == objectTag ? value.constructor : undefined,\n        ctorString = Ctor ? toSource(Ctor) : '';\n\n    if (ctorString) {\n      switch (ctorString) {\n        case dataViewCtorString: return dataViewTag;\n        case mapCtorString: return mapTag;\n        case promiseCtorString: return promiseTag;\n        case setCtorString: return setTag;\n        case weakMapCtorString: return weakMapTag;\n      }\n    }\n    return result;\n  };\n}\n\nmodule.exports = getTag;\n","var getNative = require('./_getNative'),\n    root = require('./_root');\n\n/* Built-in method references that are verified to be native. */\nvar DataView = getNative(root, 'DataView');\n\nmodule.exports = DataView;\n","var getNative = require('./_getNative'),\n    root = require('./_root');\n\n/* Built-in method references that are verified to be native. */\nvar Promise = getNative(root, 'Promise');\n\nmodule.exports = Promise;\n","var getNative = require('./_getNative'),\n    root = require('./_root');\n\n/* Built-in method references that are verified to be native. */\nvar Set = getNative(root, 'Set');\n\nmodule.exports = Set;\n","var getNative = require('./_getNative'),\n    root = require('./_root');\n\n/* Built-in method references that are verified to be native. */\nvar WeakMap = getNative(root, 'WeakMap');\n\nmodule.exports = WeakMap;\n","var isStrictComparable = require('./_isStrictComparable'),\n    keys = require('./keys');\n\n/**\n * Gets the property names, values, and compare flags of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the match data of `object`.\n */\nfunction getMatchData(object) {\n  var result = keys(object),\n      length = result.length;\n\n  while (length--) {\n    var key = result[length],\n        value = object[key];\n\n    result[length] = [key, value, isStrictComparable(value)];\n  }\n  return result;\n}\n\nmodule.exports = getMatchData;\n","var baseIsEqual = require('./_baseIsEqual'),\n    get = require('./get'),\n    hasIn = require('./hasIn'),\n    isKey = require('./_isKey'),\n    isStrictComparable = require('./_isStrictComparable'),\n    matchesStrictComparable = require('./_matchesStrictComparable'),\n    toKey = require('./_toKey');\n\n/** Used to compose bitmasks for value comparisons. */\nvar COMPARE_PARTIAL_FLAG = 1,\n    COMPARE_UNORDERED_FLAG = 2;\n\n/**\n * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.\n *\n * @private\n * @param {string} path The path of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\nfunction baseMatchesProperty(path, srcValue) {\n  if (isKey(path) && isStrictComparable(srcValue)) {\n    return matchesStrictComparable(toKey(path), srcValue);\n  }\n  return function(object) {\n    var objValue = get(object, path);\n    return (objValue === undefined && objValue === srcValue)\n      ? hasIn(object, path)\n      : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);\n  };\n}\n\nmodule.exports = baseMatchesProperty;\n","var baseGet = require('./_baseGet');\n\n/**\n * Gets the value at `path` of `object`. If the resolved value is\n * `undefined`, the `defaultValue` is returned in its place.\n *\n * @static\n * @memberOf _\n * @since 3.7.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n * @returns {*} Returns the resolved value.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.get(object, 'a[0].b.c');\n * // => 3\n *\n * _.get(object, ['a', '0', 'b', 'c']);\n * // => 3\n *\n * _.get(object, 'a.b.c', 'default');\n * // => 'default'\n */\nfunction get(object, path, defaultValue) {\n  var result = object == null ? undefined : baseGet(object, path);\n  return result === undefined ? defaultValue : result;\n}\n\nmodule.exports = get;\n","var baseHasIn = require('./_baseHasIn'),\n    hasPath = require('./_hasPath');\n\n/**\n * Checks if `path` is a direct or inherited property of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n * @example\n *\n * var object = _.create({ 'a': _.create({ 'b': 2 }) });\n *\n * _.hasIn(object, 'a');\n * // => true\n *\n * _.hasIn(object, 'a.b');\n * // => true\n *\n * _.hasIn(object, ['a', 'b']);\n * // => true\n *\n * _.hasIn(object, 'b');\n * // => false\n */\nfunction hasIn(object, path) {\n  return object != null && hasPath(object, path, baseHasIn);\n}\n\nmodule.exports = hasIn;\n","/**\n * The base implementation of `_.hasIn` without support for deep paths.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\nfunction baseHasIn(object, key) {\n  return object != null && key in Object(object);\n}\n\nmodule.exports = baseHasIn;\n","/**\n * This method returns the first argument it receives.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Util\n * @param {*} value Any value.\n * @returns {*} Returns `value`.\n * @example\n *\n * var object = { 'a': 1 };\n *\n * console.log(_.identity(object) === object);\n * // => true\n */\nfunction identity(value) {\n  return value;\n}\n\nmodule.exports = identity;\n","var baseProperty = require('./_baseProperty'),\n    basePropertyDeep = require('./_basePropertyDeep'),\n    isKey = require('./_isKey'),\n    toKey = require('./_toKey');\n\n/**\n * Creates a function that returns the value at `path` of a given object.\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Util\n * @param {Array|string} path The path of the property to get.\n * @returns {Function} Returns the new accessor function.\n * @example\n *\n * var objects = [\n *   { 'a': { 'b': 2 } },\n *   { 'a': { 'b': 1 } }\n * ];\n *\n * _.map(objects, _.property('a.b'));\n * // => [2, 1]\n *\n * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');\n * // => [1, 2]\n */\nfunction property(path) {\n  return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);\n}\n\nmodule.exports = property;\n","/**\n * The base implementation of `_.property` without support for deep paths.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\nfunction baseProperty(key) {\n  return function(object) {\n    return object == null ? undefined : object[key];\n  };\n}\n\nmodule.exports = baseProperty;\n","var baseGet = require('./_baseGet');\n\n/**\n * A specialized version of `baseProperty` which supports deep paths.\n *\n * @private\n * @param {Array|string} path The path of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\nfunction basePropertyDeep(path) {\n  return function(object) {\n    return baseGet(object, path);\n  };\n}\n\nmodule.exports = basePropertyDeep;\n","/**\n * A specialized version of `_.reduce` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @param {boolean} [initAccum] Specify using the first element of `array` as\n *  the initial value.\n * @returns {*} Returns the accumulated value.\n */\nfunction arrayReduce(array, iteratee, accumulator, initAccum) {\n  var index = -1,\n      length = array == null ? 0 : array.length;\n\n  if (initAccum && length) {\n    accumulator = array[++index];\n  }\n  while (++index < length) {\n    accumulator = iteratee(accumulator, array[index], index, array);\n  }\n  return accumulator;\n}\n\nmodule.exports = arrayReduce;\n","var deburrLetter = require('./_deburrLetter'),\n    toString = require('./toString');\n\n/** Used to match Latin Unicode letters (excluding mathematical operators). */\nvar reLatin = /[\\xc0-\\xd6\\xd8-\\xf6\\xf8-\\xff\\u0100-\\u017f]/g;\n\n/** Used to compose unicode character classes. */\nvar rsComboMarksRange = '\\\\u0300-\\\\u036f',\n    reComboHalfMarksRange = '\\\\ufe20-\\\\ufe2f',\n    rsComboSymbolsRange = '\\\\u20d0-\\\\u20ff',\n    rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange;\n\n/** Used to compose unicode capture groups. */\nvar rsCombo = '[' + rsComboRange + ']';\n\n/**\n * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and\n * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).\n */\nvar reComboMark = RegExp(rsCombo, 'g');\n\n/**\n * Deburrs `string` by converting\n * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)\n * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)\n * letters to basic Latin letters and removing\n * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to deburr.\n * @returns {string} Returns the deburred string.\n * @example\n *\n * _.deburr('déjà vu');\n * // => 'deja vu'\n */\nfunction deburr(string) {\n  string = toString(string);\n  return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');\n}\n\nmodule.exports = deburr;\n","var basePropertyOf = require('./_basePropertyOf');\n\n/** Used to map Latin Unicode letters to basic Latin letters. */\nvar deburredLetters = {\n  // Latin-1 Supplement block.\n  '\\xc0': 'A',  '\\xc1': 'A', '\\xc2': 'A', '\\xc3': 'A', '\\xc4': 'A', '\\xc5': 'A',\n  '\\xe0': 'a',  '\\xe1': 'a', '\\xe2': 'a', '\\xe3': 'a', '\\xe4': 'a', '\\xe5': 'a',\n  '\\xc7': 'C',  '\\xe7': 'c',\n  '\\xd0': 'D',  '\\xf0': 'd',\n  '\\xc8': 'E',  '\\xc9': 'E', '\\xca': 'E', '\\xcb': 'E',\n  '\\xe8': 'e',  '\\xe9': 'e', '\\xea': 'e', '\\xeb': 'e',\n  '\\xcc': 'I',  '\\xcd': 'I', '\\xce': 'I', '\\xcf': 'I',\n  '\\xec': 'i',  '\\xed': 'i', '\\xee': 'i', '\\xef': 'i',\n  '\\xd1': 'N',  '\\xf1': 'n',\n  '\\xd2': 'O',  '\\xd3': 'O', '\\xd4': 'O', '\\xd5': 'O', '\\xd6': 'O', '\\xd8': 'O',\n  '\\xf2': 'o',  '\\xf3': 'o', '\\xf4': 'o', '\\xf5': 'o', '\\xf6': 'o', '\\xf8': 'o',\n  '\\xd9': 'U',  '\\xda': 'U', '\\xdb': 'U', '\\xdc': 'U',\n  '\\xf9': 'u',  '\\xfa': 'u', '\\xfb': 'u', '\\xfc': 'u',\n  '\\xdd': 'Y',  '\\xfd': 'y', '\\xff': 'y',\n  '\\xc6': 'Ae', '\\xe6': 'ae',\n  '\\xde': 'Th', '\\xfe': 'th',\n  '\\xdf': 'ss',\n  // Latin Extended-A block.\n  '\\u0100': 'A',  '\\u0102': 'A', '\\u0104': 'A',\n  '\\u0101': 'a',  '\\u0103': 'a', '\\u0105': 'a',\n  '\\u0106': 'C',  '\\u0108': 'C', '\\u010a': 'C', '\\u010c': 'C',\n  '\\u0107': 'c',  '\\u0109': 'c', '\\u010b': 'c', '\\u010d': 'c',\n  '\\u010e': 'D',  '\\u0110': 'D', '\\u010f': 'd', '\\u0111': 'd',\n  '\\u0112': 'E',  '\\u0114': 'E', '\\u0116': 'E', '\\u0118': 'E', '\\u011a': 'E',\n  '\\u0113': 'e',  '\\u0115': 'e', '\\u0117': 'e', '\\u0119': 'e', '\\u011b': 'e',\n  '\\u011c': 'G',  '\\u011e': 'G', '\\u0120': 'G', '\\u0122': 'G',\n  '\\u011d': 'g',  '\\u011f': 'g', '\\u0121': 'g', '\\u0123': 'g',\n  '\\u0124': 'H',  '\\u0126': 'H', '\\u0125': 'h', '\\u0127': 'h',\n  '\\u0128': 'I',  '\\u012a': 'I', '\\u012c': 'I', '\\u012e': 'I', '\\u0130': 'I',\n  '\\u0129': 'i',  '\\u012b': 'i', '\\u012d': 'i', '\\u012f': 'i', '\\u0131': 'i',\n  '\\u0134': 'J',  '\\u0135': 'j',\n  '\\u0136': 'K',  '\\u0137': 'k', '\\u0138': 'k',\n  '\\u0139': 'L',  '\\u013b': 'L', '\\u013d': 'L', '\\u013f': 'L', '\\u0141': 'L',\n  '\\u013a': 'l',  '\\u013c': 'l', '\\u013e': 'l', '\\u0140': 'l', '\\u0142': 'l',\n  '\\u0143': 'N',  '\\u0145': 'N', '\\u0147': 'N', '\\u014a': 'N',\n  '\\u0144': 'n',  '\\u0146': 'n', '\\u0148': 'n', '\\u014b': 'n',\n  '\\u014c': 'O',  '\\u014e': 'O', '\\u0150': 'O',\n  '\\u014d': 'o',  '\\u014f': 'o', '\\u0151': 'o',\n  '\\u0154': 'R',  '\\u0156': 'R', '\\u0158': 'R',\n  '\\u0155': 'r',  '\\u0157': 'r', '\\u0159': 'r',\n  '\\u015a': 'S',  '\\u015c': 'S', '\\u015e': 'S', '\\u0160': 'S',\n  '\\u015b': 's',  '\\u015d': 's', '\\u015f': 's', '\\u0161': 's',\n  '\\u0162': 'T',  '\\u0164': 'T', '\\u0166': 'T',\n  '\\u0163': 't',  '\\u0165': 't', '\\u0167': 't',\n  '\\u0168': 'U',  '\\u016a': 'U', '\\u016c': 'U', '\\u016e': 'U', '\\u0170': 'U', '\\u0172': 'U',\n  '\\u0169': 'u',  '\\u016b': 'u', '\\u016d': 'u', '\\u016f': 'u', '\\u0171': 'u', '\\u0173': 'u',\n  '\\u0174': 'W',  '\\u0175': 'w',\n  '\\u0176': 'Y',  '\\u0177': 'y', '\\u0178': 'Y',\n  '\\u0179': 'Z',  '\\u017b': 'Z', '\\u017d': 'Z',\n  '\\u017a': 'z',  '\\u017c': 'z', '\\u017e': 'z',\n  '\\u0132': 'IJ', '\\u0133': 'ij',\n  '\\u0152': 'Oe', '\\u0153': 'oe',\n  '\\u0149': \"'n\", '\\u017f': 's'\n};\n\n/**\n * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A\n * letters to basic Latin letters.\n *\n * @private\n * @param {string} letter The matched letter to deburr.\n * @returns {string} Returns the deburred letter.\n */\nvar deburrLetter = basePropertyOf(deburredLetters);\n\nmodule.exports = deburrLetter;\n","/**\n * The base implementation of `_.propertyOf` without support for deep paths.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Function} Returns the new accessor function.\n */\nfunction basePropertyOf(object) {\n  return function(key) {\n    return object == null ? undefined : object[key];\n  };\n}\n\nmodule.exports = basePropertyOf;\n","var asciiWords = require('./_asciiWords'),\n    hasUnicodeWord = require('./_hasUnicodeWord'),\n    toString = require('./toString'),\n    unicodeWords = require('./_unicodeWords');\n\n/**\n * Splits `string` into an array of its words.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to inspect.\n * @param {RegExp|string} [pattern] The pattern to match words.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the words of `string`.\n * @example\n *\n * _.words('fred, barney, & pebbles');\n * // => ['fred', 'barney', 'pebbles']\n *\n * _.words('fred, barney, & pebbles', /[^, ]+/g);\n * // => ['fred', 'barney', '&', 'pebbles']\n */\nfunction words(string, pattern, guard) {\n  string = toString(string);\n  pattern = guard ? undefined : pattern;\n\n  if (pattern === undefined) {\n    return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string);\n  }\n  return string.match(pattern) || [];\n}\n\nmodule.exports = words;\n","/** Used to match words composed of alphanumeric characters. */\nvar reAsciiWord = /[^\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\x7f]+/g;\n\n/**\n * Splits an ASCII `string` into an array of its words.\n *\n * @private\n * @param {string} The string to inspect.\n * @returns {Array} Returns the words of `string`.\n */\nfunction asciiWords(string) {\n  return string.match(reAsciiWord) || [];\n}\n\nmodule.exports = asciiWords;\n","/** Used to detect strings that need a more robust regexp to match words. */\nvar reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;\n\n/**\n * Checks if `string` contains a word composed of Unicode symbols.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {boolean} Returns `true` if a word is found, else `false`.\n */\nfunction hasUnicodeWord(string) {\n  return reHasUnicodeWord.test(string);\n}\n\nmodule.exports = hasUnicodeWord;\n","/** Used to compose unicode character classes. */\nvar rsAstralRange = '\\\\ud800-\\\\udfff',\n    rsComboMarksRange = '\\\\u0300-\\\\u036f',\n    reComboHalfMarksRange = '\\\\ufe20-\\\\ufe2f',\n    rsComboSymbolsRange = '\\\\u20d0-\\\\u20ff',\n    rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,\n    rsDingbatRange = '\\\\u2700-\\\\u27bf',\n    rsLowerRange = 'a-z\\\\xdf-\\\\xf6\\\\xf8-\\\\xff',\n    rsMathOpRange = '\\\\xac\\\\xb1\\\\xd7\\\\xf7',\n    rsNonCharRange = '\\\\x00-\\\\x2f\\\\x3a-\\\\x40\\\\x5b-\\\\x60\\\\x7b-\\\\xbf',\n    rsPunctuationRange = '\\\\u2000-\\\\u206f',\n    rsSpaceRange = ' \\\\t\\\\x0b\\\\f\\\\xa0\\\\ufeff\\\\n\\\\r\\\\u2028\\\\u2029\\\\u1680\\\\u180e\\\\u2000\\\\u2001\\\\u2002\\\\u2003\\\\u2004\\\\u2005\\\\u2006\\\\u2007\\\\u2008\\\\u2009\\\\u200a\\\\u202f\\\\u205f\\\\u3000',\n    rsUpperRange = 'A-Z\\\\xc0-\\\\xd6\\\\xd8-\\\\xde',\n    rsVarRange = '\\\\ufe0e\\\\ufe0f',\n    rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;\n\n/** Used to compose unicode capture groups. */\nvar rsApos = \"['\\u2019]\",\n    rsBreak = '[' + rsBreakRange + ']',\n    rsCombo = '[' + rsComboRange + ']',\n    rsDigits = '\\\\d+',\n    rsDingbat = '[' + rsDingbatRange + ']',\n    rsLower = '[' + rsLowerRange + ']',\n    rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',\n    rsFitz = '\\\\ud83c[\\\\udffb-\\\\udfff]',\n    rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',\n    rsNonAstral = '[^' + rsAstralRange + ']',\n    rsRegional = '(?:\\\\ud83c[\\\\udde6-\\\\uddff]){2}',\n    rsSurrPair = '[\\\\ud800-\\\\udbff][\\\\udc00-\\\\udfff]',\n    rsUpper = '[' + rsUpperRange + ']',\n    rsZWJ = '\\\\u200d';\n\n/** Used to compose unicode regexes. */\nvar rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',\n    rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',\n    rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',\n    rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',\n    reOptMod = rsModifier + '?',\n    rsOptVar = '[' + rsVarRange + ']?',\n    rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',\n    rsOrdLower = '\\\\d*(?:1st|2nd|3rd|(?![123])\\\\dth)(?=\\\\b|[A-Z_])',\n    rsOrdUpper = '\\\\d*(?:1ST|2ND|3RD|(?![123])\\\\dTH)(?=\\\\b|[a-z_])',\n    rsSeq = rsOptVar + reOptMod + rsOptJoin,\n    rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq;\n\n/** Used to match complex or compound words. */\nvar reUnicodeWord = RegExp([\n  rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',\n  rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',\n  rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,\n  rsUpper + '+' + rsOptContrUpper,\n  rsOrdUpper,\n  rsOrdLower,\n  rsDigits,\n  rsEmoji\n].join('|'), 'g');\n\n/**\n * Splits a Unicode `string` into an array of its words.\n *\n * @private\n * @param {string} The string to inspect.\n * @returns {Array} Returns the words of `string`.\n */\nfunction unicodeWords(string) {\n  return string.match(reUnicodeWord) || [];\n}\n\nmodule.exports = unicodeWords;\n","var toString = require('./toString'),\n    upperFirst = require('./upperFirst');\n\n/**\n * Converts the first character of `string` to upper case and the remaining\n * to lower case.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to capitalize.\n * @returns {string} Returns the capitalized string.\n * @example\n *\n * _.capitalize('FRED');\n * // => 'Fred'\n */\nfunction capitalize(string) {\n  return upperFirst(toString(string).toLowerCase());\n}\n\nmodule.exports = capitalize;\n","var createCaseFirst = require('./_createCaseFirst');\n\n/**\n * Converts the first character of `string` to upper case.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the converted string.\n * @example\n *\n * _.upperFirst('fred');\n * // => 'Fred'\n *\n * _.upperFirst('FRED');\n * // => 'FRED'\n */\nvar upperFirst = createCaseFirst('toUpperCase');\n\nmodule.exports = upperFirst;\n","var castSlice = require('./_castSlice'),\n    hasUnicode = require('./_hasUnicode'),\n    stringToArray = require('./_stringToArray'),\n    toString = require('./toString');\n\n/**\n * Creates a function like `_.lowerFirst`.\n *\n * @private\n * @param {string} methodName The name of the `String` case method to use.\n * @returns {Function} Returns the new case function.\n */\nfunction createCaseFirst(methodName) {\n  return function(string) {\n    string = toString(string);\n\n    var strSymbols = hasUnicode(string)\n      ? stringToArray(string)\n      : undefined;\n\n    var chr = strSymbols\n      ? strSymbols[0]\n      : string.charAt(0);\n\n    var trailing = strSymbols\n      ? castSlice(strSymbols, 1).join('')\n      : string.slice(1);\n\n    return chr[methodName]() + trailing;\n  };\n}\n\nmodule.exports = createCaseFirst;\n","var baseSlice = require('./_baseSlice');\n\n/**\n * Casts `array` to a slice if it's needed.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {number} start The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the cast slice.\n */\nfunction castSlice(array, start, end) {\n  var length = array.length;\n  end = end === undefined ? length : end;\n  return (!start && end >= length) ? array : baseSlice(array, start, end);\n}\n\nmodule.exports = castSlice;\n","/**\n * The base implementation of `_.slice` without an iteratee call guard.\n *\n * @private\n * @param {Array} array The array to slice.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the slice of `array`.\n */\nfunction baseSlice(array, start, end) {\n  var index = -1,\n      length = array.length;\n\n  if (start < 0) {\n    start = -start > length ? 0 : (length + start);\n  }\n  end = end > length ? length : end;\n  if (end < 0) {\n    end += length;\n  }\n  length = start > end ? 0 : ((end - start) >>> 0);\n  start >>>= 0;\n\n  var result = Array(length);\n  while (++index < length) {\n    result[index] = array[index + start];\n  }\n  return result;\n}\n\nmodule.exports = baseSlice;\n","var asciiToArray = require('./_asciiToArray'),\n    hasUnicode = require('./_hasUnicode'),\n    unicodeToArray = require('./_unicodeToArray');\n\n/**\n * Converts `string` to an array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the converted array.\n */\nfunction stringToArray(string) {\n  return hasUnicode(string)\n    ? unicodeToArray(string)\n    : asciiToArray(string);\n}\n\nmodule.exports = stringToArray;\n","/**\n * Converts an ASCII `string` to an array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the converted array.\n */\nfunction asciiToArray(string) {\n  return string.split('');\n}\n\nmodule.exports = asciiToArray;\n","/** Used to compose unicode character classes. */\nvar rsAstralRange = '\\\\ud800-\\\\udfff',\n    rsComboMarksRange = '\\\\u0300-\\\\u036f',\n    reComboHalfMarksRange = '\\\\ufe20-\\\\ufe2f',\n    rsComboSymbolsRange = '\\\\u20d0-\\\\u20ff',\n    rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,\n    rsVarRange = '\\\\ufe0e\\\\ufe0f';\n\n/** Used to compose unicode capture groups. */\nvar rsAstral = '[' + rsAstralRange + ']',\n    rsCombo = '[' + rsComboRange + ']',\n    rsFitz = '\\\\ud83c[\\\\udffb-\\\\udfff]',\n    rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',\n    rsNonAstral = '[^' + rsAstralRange + ']',\n    rsRegional = '(?:\\\\ud83c[\\\\udde6-\\\\uddff]){2}',\n    rsSurrPair = '[\\\\ud800-\\\\udbff][\\\\udc00-\\\\udfff]',\n    rsZWJ = '\\\\u200d';\n\n/** Used to compose unicode regexes. */\nvar reOptMod = rsModifier + '?',\n    rsOptVar = '[' + rsVarRange + ']?',\n    rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',\n    rsSeq = rsOptVar + reOptMod + rsOptJoin,\n    rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';\n\n/** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */\nvar reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');\n\n/**\n * Converts a Unicode `string` to an array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the converted array.\n */\nfunction unicodeToArray(string) {\n  return string.match(reUnicode) || [];\n}\n\nmodule.exports = unicodeToArray;\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\nif (process.env.NODE_ENV !== 'production') {\n  var ReactIs = require('react-is');\n\n  // By explicitly using `prop-types` you are opting into new development behavior.\n  // http://fb.me/prop-types-in-prod\n  var throwOnDirectAccess = true;\n  module.exports = require('./factoryWithTypeCheckers')(ReactIs.isElement, throwOnDirectAccess);\n} else {\n  // By explicitly using `prop-types` you are opting into new production behavior.\n  // http://fb.me/prop-types-in-prod\n  module.exports = require('./factoryWithThrowingShims')();\n}\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\nvar ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');\n\nfunction emptyFunction() {}\nfunction emptyFunctionWithReset() {}\nemptyFunctionWithReset.resetWarningCache = emptyFunction;\n\nmodule.exports = function() {\n  function shim(props, propName, componentName, location, propFullName, secret) {\n    if (secret === ReactPropTypesSecret) {\n      // It is still safe when called from React.\n      return;\n    }\n    var err = new Error(\n      'Calling PropTypes validators directly is not supported by the `prop-types` package. ' +\n      'Use PropTypes.checkPropTypes() to call them. ' +\n      'Read more at http://fb.me/use-check-prop-types'\n    );\n    err.name = 'Invariant Violation';\n    throw err;\n  };\n  shim.isRequired = shim;\n  function getShim() {\n    return shim;\n  };\n  // Important!\n  // Keep this list in sync with production version in `./factoryWithTypeCheckers.js`.\n  var ReactPropTypes = {\n    array: shim,\n    bool: shim,\n    func: shim,\n    number: shim,\n    object: shim,\n    string: shim,\n    symbol: shim,\n\n    any: shim,\n    arrayOf: getShim,\n    element: shim,\n    elementType: shim,\n    instanceOf: getShim,\n    node: shim,\n    objectOf: getShim,\n    oneOf: getShim,\n    oneOfType: getShim,\n    shape: getShim,\n    exact: getShim,\n\n    checkPropTypes: emptyFunctionWithReset,\n    resetWarningCache: emptyFunction\n  };\n\n  ReactPropTypes.PropTypes = ReactPropTypes;\n\n  return ReactPropTypes;\n};\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\nvar ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';\n\nmodule.exports = ReactPropTypesSecret;\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\nif (process.env.NODE_ENV !== 'production') {\n  var ReactIs = require('react-is');\n\n  // By explicitly using `prop-types` you are opting into new development behavior.\n  // http://fb.me/prop-types-in-prod\n  var throwOnDirectAccess = true;\n  module.exports = require('./factoryWithTypeCheckers')(ReactIs.isElement, throwOnDirectAccess);\n} else {\n  // By explicitly using `prop-types` you are opting into new production behavior.\n  // http://fb.me/prop-types-in-prod\n  module.exports = require('./factoryWithThrowingShims')();\n}\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\nvar ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');\n\nfunction emptyFunction() {}\nfunction emptyFunctionWithReset() {}\nemptyFunctionWithReset.resetWarningCache = emptyFunction;\n\nmodule.exports = function() {\n  function shim(props, propName, componentName, location, propFullName, secret) {\n    if (secret === ReactPropTypesSecret) {\n      // It is still safe when called from React.\n      return;\n    }\n    var err = new Error(\n      'Calling PropTypes validators directly is not supported by the `prop-types` package. ' +\n      'Use PropTypes.checkPropTypes() to call them. ' +\n      'Read more at http://fb.me/use-check-prop-types'\n    );\n    err.name = 'Invariant Violation';\n    throw err;\n  };\n  shim.isRequired = shim;\n  function getShim() {\n    return shim;\n  };\n  // Important!\n  // Keep this list in sync with production version in `./factoryWithTypeCheckers.js`.\n  var ReactPropTypes = {\n    array: shim,\n    bool: shim,\n    func: shim,\n    number: shim,\n    object: shim,\n    string: shim,\n    symbol: shim,\n\n    any: shim,\n    arrayOf: getShim,\n    element: shim,\n    elementType: shim,\n    instanceOf: getShim,\n    node: shim,\n    objectOf: getShim,\n    oneOf: getShim,\n    oneOfType: getShim,\n    shape: getShim,\n    exact: getShim,\n\n    checkPropTypes: emptyFunctionWithReset,\n    resetWarningCache: emptyFunction\n  };\n\n  ReactPropTypes.PropTypes = ReactPropTypes;\n\n  return ReactPropTypes;\n};\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\nvar ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';\n\nmodule.exports = ReactPropTypesSecret;\n","/** @license React v17.0.2\n * react-is.production.min.js\n *\n * Copyright (c) Facebook, Inc. and its affiliates.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n'use strict';var b=60103,c=60106,d=60107,e=60108,f=60114,g=60109,h=60110,k=60112,l=60113,m=60120,n=60115,p=60116,q=60121,r=60122,u=60117,v=60129,w=60131;\nif(\"function\"===typeof Symbol&&Symbol.for){var x=Symbol.for;b=x(\"react.element\");c=x(\"react.portal\");d=x(\"react.fragment\");e=x(\"react.strict_mode\");f=x(\"react.profiler\");g=x(\"react.provider\");h=x(\"react.context\");k=x(\"react.forward_ref\");l=x(\"react.suspense\");m=x(\"react.suspense_list\");n=x(\"react.memo\");p=x(\"react.lazy\");q=x(\"react.block\");r=x(\"react.server.block\");u=x(\"react.fundamental\");v=x(\"react.debug_trace_mode\");w=x(\"react.legacy_hidden\")}\nfunction y(a){if(\"object\"===typeof a&&null!==a){var t=a.$$typeof;switch(t){case b:switch(a=a.type,a){case d:case f:case e:case l:case m:return a;default:switch(a=a&&a.$$typeof,a){case h:case k:case p:case n:case g:return a;default:return t}}case c:return t}}}var z=g,A=b,B=k,C=d,D=p,E=n,F=c,G=f,H=e,I=l;exports.ContextConsumer=h;exports.ContextProvider=z;exports.Element=A;exports.ForwardRef=B;exports.Fragment=C;exports.Lazy=D;exports.Memo=E;exports.Portal=F;exports.Profiler=G;exports.StrictMode=H;\nexports.Suspense=I;exports.isAsyncMode=function(){return!1};exports.isConcurrentMode=function(){return!1};exports.isContextConsumer=function(a){return y(a)===h};exports.isContextProvider=function(a){return y(a)===g};exports.isElement=function(a){return\"object\"===typeof a&&null!==a&&a.$$typeof===b};exports.isForwardRef=function(a){return y(a)===k};exports.isFragment=function(a){return y(a)===d};exports.isLazy=function(a){return y(a)===p};exports.isMemo=function(a){return y(a)===n};\nexports.isPortal=function(a){return y(a)===c};exports.isProfiler=function(a){return y(a)===f};exports.isStrictMode=function(a){return y(a)===e};exports.isSuspense=function(a){return y(a)===l};exports.isValidElementType=function(a){return\"string\"===typeof a||\"function\"===typeof a||a===d||a===f||a===v||a===e||a===l||a===m||a===w||\"object\"===typeof a&&null!==a&&(a.$$typeof===p||a.$$typeof===n||a.$$typeof===g||a.$$typeof===h||a.$$typeof===k||a.$$typeof===u||a.$$typeof===q||a[0]===r)?!0:!1};\nexports.typeOf=y;\n","import React from 'react';\nimport ThemeContext from './ThemeContext';\nexport default function useTheme() {\n  var theme = React.useContext(ThemeContext);\n\n  if (process.env.NODE_ENV !== 'production') {\n    // eslint-disable-next-line react-hooks/rules-of-hooks\n    React.useDebugValue(theme);\n  }\n\n  return theme;\n}","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport withStyles from '../styles/withStyles';\nimport capitalize from '../utils/capitalize';\nexport var styles = function styles(theme) {\n  return {\n    /* Styles applied to the root element. */\n    root: {\n      margin: 0\n    },\n\n    /* Styles applied to the root element if `variant=\"body2\"`. */\n    body2: theme.typography.body2,\n\n    /* Styles applied to the root element if `variant=\"body1\"`. */\n    body1: theme.typography.body1,\n\n    /* Styles applied to the root element if `variant=\"caption\"`. */\n    caption: theme.typography.caption,\n\n    /* Styles applied to the root element if `variant=\"button\"`. */\n    button: theme.typography.button,\n\n    /* Styles applied to the root element if `variant=\"h1\"`. */\n    h1: theme.typography.h1,\n\n    /* Styles applied to the root element if `variant=\"h2\"`. */\n    h2: theme.typography.h2,\n\n    /* Styles applied to the root element if `variant=\"h3\"`. */\n    h3: theme.typography.h3,\n\n    /* Styles applied to the root element if `variant=\"h4\"`. */\n    h4: theme.typography.h4,\n\n    /* Styles applied to the root element if `variant=\"h5\"`. */\n    h5: theme.typography.h5,\n\n    /* Styles applied to the root element if `variant=\"h6\"`. */\n    h6: theme.typography.h6,\n\n    /* Styles applied to the root element if `variant=\"subtitle1\"`. */\n    subtitle1: theme.typography.subtitle1,\n\n    /* Styles applied to the root element if `variant=\"subtitle2\"`. */\n    subtitle2: theme.typography.subtitle2,\n\n    /* Styles applied to the root element if `variant=\"overline\"`. */\n    overline: theme.typography.overline,\n\n    /* Styles applied to the root element if `variant=\"srOnly\"`. Only accessible to screen readers. */\n    srOnly: {\n      position: 'absolute',\n      height: 1,\n      width: 1,\n      overflow: 'hidden'\n    },\n\n    /* Styles applied to the root element if `align=\"left\"`. */\n    alignLeft: {\n      textAlign: 'left'\n    },\n\n    /* Styles applied to the root element if `align=\"center\"`. */\n    alignCenter: {\n      textAlign: 'center'\n    },\n\n    /* Styles applied to the root element if `align=\"right\"`. */\n    alignRight: {\n      textAlign: 'right'\n    },\n\n    /* Styles applied to the root element if `align=\"justify\"`. */\n    alignJustify: {\n      textAlign: 'justify'\n    },\n\n    /* Styles applied to the root element if `nowrap={true}`. */\n    noWrap: {\n      overflow: 'hidden',\n      textOverflow: 'ellipsis',\n      whiteSpace: 'nowrap'\n    },\n\n    /* Styles applied to the root element if `gutterBottom={true}`. */\n    gutterBottom: {\n      marginBottom: '0.35em'\n    },\n\n    /* Styles applied to the root element if `paragraph={true}`. */\n    paragraph: {\n      marginBottom: 16\n    },\n\n    /* Styles applied to the root element if `color=\"inherit\"`. */\n    colorInherit: {\n      color: 'inherit'\n    },\n\n    /* Styles applied to the root element if `color=\"primary\"`. */\n    colorPrimary: {\n      color: theme.palette.primary.main\n    },\n\n    /* Styles applied to the root element if `color=\"secondary\"`. */\n    colorSecondary: {\n      color: theme.palette.secondary.main\n    },\n\n    /* Styles applied to the root element if `color=\"textPrimary\"`. */\n    colorTextPrimary: {\n      color: theme.palette.text.primary\n    },\n\n    /* Styles applied to the root element if `color=\"textSecondary\"`. */\n    colorTextSecondary: {\n      color: theme.palette.text.secondary\n    },\n\n    /* Styles applied to the root element if `color=\"error\"`. */\n    colorError: {\n      color: theme.palette.error.main\n    },\n\n    /* Styles applied to the root element if `display=\"inline\"`. */\n    displayInline: {\n      display: 'inline'\n    },\n\n    /* Styles applied to the root element if `display=\"block\"`. */\n    displayBlock: {\n      display: 'block'\n    }\n  };\n};\nvar defaultVariantMapping = {\n  h1: 'h1',\n  h2: 'h2',\n  h3: 'h3',\n  h4: 'h4',\n  h5: 'h5',\n  h6: 'h6',\n  subtitle1: 'h6',\n  subtitle2: 'h6',\n  body1: 'p',\n  body2: 'p'\n};\nvar Typography = /*#__PURE__*/React.forwardRef(function Typography(props, ref) {\n  var _props$align = props.align,\n      align = _props$align === void 0 ? 'inherit' : _props$align,\n      classes = props.classes,\n      className = props.className,\n      _props$color = props.color,\n      color = _props$color === void 0 ? 'initial' : _props$color,\n      component = props.component,\n      _props$display = props.display,\n      display = _props$display === void 0 ? 'initial' : _props$display,\n      _props$gutterBottom = props.gutterBottom,\n      gutterBottom = _props$gutterBottom === void 0 ? false : _props$gutterBottom,\n      _props$noWrap = props.noWrap,\n      noWrap = _props$noWrap === void 0 ? false : _props$noWrap,\n      _props$paragraph = props.paragraph,\n      paragraph = _props$paragraph === void 0 ? false : _props$paragraph,\n      _props$variant = props.variant,\n      variant = _props$variant === void 0 ? 'body1' : _props$variant,\n      _props$variantMapping = props.variantMapping,\n      variantMapping = _props$variantMapping === void 0 ? defaultVariantMapping : _props$variantMapping,\n      other = _objectWithoutProperties(props, [\"align\", \"classes\", \"className\", \"color\", \"component\", \"display\", \"gutterBottom\", \"noWrap\", \"paragraph\", \"variant\", \"variantMapping\"]);\n\n  var Component = component || (paragraph ? 'p' : variantMapping[variant] || defaultVariantMapping[variant]) || 'span';\n  return /*#__PURE__*/React.createElement(Component, _extends({\n    className: clsx(classes.root, className, variant !== 'inherit' && classes[variant], color !== 'initial' && classes[\"color\".concat(capitalize(color))], noWrap && classes.noWrap, gutterBottom && classes.gutterBottom, paragraph && classes.paragraph, align !== 'inherit' && classes[\"align\".concat(capitalize(align))], display !== 'initial' && classes[\"display\".concat(capitalize(display))]),\n    ref: ref\n  }, other));\n});\nprocess.env.NODE_ENV !== \"production\" ? Typography.propTypes = {\n  /**\n   * Set the text-align on the component.\n   */\n  align: PropTypes.oneOf(['inherit', 'left', 'center', 'right', 'justify']),\n\n  /**\n   * The content of the component.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object.isRequired,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The color of the component. It supports those theme colors that make sense for this component.\n   */\n  color: PropTypes.oneOf(['initial', 'inherit', 'primary', 'secondary', 'textPrimary', 'textSecondary', 'error']),\n\n  /**\n   * The component used for the root node.\n   * Either a string to use a HTML element or a component.\n   * Overrides the behavior of the `variantMapping` prop.\n   */\n  component: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .elementType,\n\n  /**\n   * Controls the display type\n   */\n  display: PropTypes.oneOf(['initial', 'block', 'inline']),\n\n  /**\n   * If `true`, the text will have a bottom margin.\n   */\n  gutterBottom: PropTypes.bool,\n\n  /**\n   * If `true`, the text will not wrap, but instead will truncate with a text overflow ellipsis.\n   *\n   * Note that text overflow can only happen with block or inline-block level elements\n   * (the element needs to have a width in order to overflow).\n   */\n  noWrap: PropTypes.bool,\n\n  /**\n   * If `true`, the text will have a bottom margin.\n   */\n  paragraph: PropTypes.bool,\n\n  /**\n   * Applies the theme typography styles.\n   */\n  variant: PropTypes.oneOf(['h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'subtitle1', 'subtitle2', 'body1', 'body2', 'caption', 'button', 'overline', 'srOnly', 'inherit']),\n\n  /**\n   * The component maps the variant prop to a range of different HTML element types.\n   * For instance, subtitle1 to `<h6>`.\n   * If you wish to change that mapping, you can provide your own.\n   * Alternatively, you can use the `component` prop.\n   */\n  variantMapping: PropTypes.object\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiTypography'\n})(Typography);","var _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nexport var isBrowser = (typeof window === \"undefined\" ? \"undefined\" : _typeof(window)) === \"object\" && (typeof document === \"undefined\" ? \"undefined\" : _typeof(document)) === 'object' && document.nodeType === 9;\n\nexport default isBrowser;\n","import _extends from '@babel/runtime/helpers/esm/extends';\nimport isInBrowser from 'is-in-browser';\nimport warning from 'tiny-warning';\nimport _createClass from '@babel/runtime/helpers/esm/createClass';\nimport _inheritsLoose from '@babel/runtime/helpers/esm/inheritsLoose';\nimport _assertThisInitialized from '@babel/runtime/helpers/esm/assertThisInitialized';\nimport _objectWithoutPropertiesLoose from '@babel/runtime/helpers/esm/objectWithoutPropertiesLoose';\n\nvar plainObjectConstrurctor = {}.constructor;\nfunction cloneStyle(style) {\n  if (style == null || typeof style !== 'object') return style;\n  if (Array.isArray(style)) return style.map(cloneStyle);\n  if (style.constructor !== plainObjectConstrurctor) return style;\n  var newStyle = {};\n\n  for (var name in style) {\n    newStyle[name] = cloneStyle(style[name]);\n  }\n\n  return newStyle;\n}\n\n/**\n * Create a rule instance.\n */\n\nfunction createRule(name, decl, options) {\n  if (name === void 0) {\n    name = 'unnamed';\n  }\n\n  var jss = options.jss;\n  var declCopy = cloneStyle(decl);\n  var rule = jss.plugins.onCreateRule(name, declCopy, options);\n  if (rule) return rule; // It is an at-rule and it has no instance.\n\n  if (name[0] === '@') {\n    process.env.NODE_ENV !== \"production\" ? warning(false, \"[JSS] Unknown rule \" + name) : void 0;\n  }\n\n  return null;\n}\n\nvar join = function join(value, by) {\n  var result = '';\n\n  for (var i = 0; i < value.length; i++) {\n    // Remove !important from the value, it will be readded later.\n    if (value[i] === '!important') break;\n    if (result) result += by;\n    result += value[i];\n  }\n\n  return result;\n};\n/**\n * Converts JSS array value to a CSS string.\n *\n * `margin: [['5px', '10px']]` > `margin: 5px 10px;`\n * `border: ['1px', '2px']` > `border: 1px, 2px;`\n * `margin: [['5px', '10px'], '!important']` > `margin: 5px 10px !important;`\n * `color: ['red', !important]` > `color: red !important;`\n */\n\n\nvar toCssValue = function toCssValue(value, ignoreImportant) {\n  if (ignoreImportant === void 0) {\n    ignoreImportant = false;\n  }\n\n  if (!Array.isArray(value)) return value;\n  var cssValue = ''; // Support space separated values via `[['5px', '10px']]`.\n\n  if (Array.isArray(value[0])) {\n    for (var i = 0; i < value.length; i++) {\n      if (value[i] === '!important') break;\n      if (cssValue) cssValue += ', ';\n      cssValue += join(value[i], ' ');\n    }\n  } else cssValue = join(value, ', '); // Add !important, because it was ignored.\n\n\n  if (!ignoreImportant && value[value.length - 1] === '!important') {\n    cssValue += ' !important';\n  }\n\n  return cssValue;\n};\n\nfunction getWhitespaceSymbols(options) {\n  if (options && options.format === false) {\n    return {\n      linebreak: '',\n      space: ''\n    };\n  }\n\n  return {\n    linebreak: '\\n',\n    space: ' '\n  };\n}\n\n/**\n * Indent a string.\n * http://jsperf.com/array-join-vs-for\n */\n\nfunction indentStr(str, indent) {\n  var result = '';\n\n  for (var index = 0; index < indent; index++) {\n    result += '  ';\n  }\n\n  return result + str;\n}\n/**\n * Converts a Rule to CSS string.\n */\n\n\nfunction toCss(selector, style, options) {\n  if (options === void 0) {\n    options = {};\n  }\n\n  var result = '';\n  if (!style) return result;\n  var _options = options,\n      _options$indent = _options.indent,\n      indent = _options$indent === void 0 ? 0 : _options$indent;\n  var fallbacks = style.fallbacks;\n\n  if (options.format === false) {\n    indent = -Infinity;\n  }\n\n  var _getWhitespaceSymbols = getWhitespaceSymbols(options),\n      linebreak = _getWhitespaceSymbols.linebreak,\n      space = _getWhitespaceSymbols.space;\n\n  if (selector) indent++; // Apply fallbacks first.\n\n  if (fallbacks) {\n    // Array syntax {fallbacks: [{prop: value}]}\n    if (Array.isArray(fallbacks)) {\n      for (var index = 0; index < fallbacks.length; index++) {\n        var fallback = fallbacks[index];\n\n        for (var prop in fallback) {\n          var value = fallback[prop];\n\n          if (value != null) {\n            if (result) result += linebreak;\n            result += indentStr(prop + \":\" + space + toCssValue(value) + \";\", indent);\n          }\n        }\n      }\n    } else {\n      // Object syntax {fallbacks: {prop: value}}\n      for (var _prop in fallbacks) {\n        var _value = fallbacks[_prop];\n\n        if (_value != null) {\n          if (result) result += linebreak;\n          result += indentStr(_prop + \":\" + space + toCssValue(_value) + \";\", indent);\n        }\n      }\n    }\n  }\n\n  for (var _prop2 in style) {\n    var _value2 = style[_prop2];\n\n    if (_value2 != null && _prop2 !== 'fallbacks') {\n      if (result) result += linebreak;\n      result += indentStr(_prop2 + \":\" + space + toCssValue(_value2) + \";\", indent);\n    }\n  } // Allow empty style in this case, because properties will be added dynamically.\n\n\n  if (!result && !options.allowEmpty) return result; // When rule is being stringified before selector was defined.\n\n  if (!selector) return result;\n  indent--;\n  if (result) result = \"\" + linebreak + result + linebreak;\n  return indentStr(\"\" + selector + space + \"{\" + result, indent) + indentStr('}', indent);\n}\n\nvar escapeRegex = /([[\\].#*$><+~=|^:(),\"'`\\s])/g;\nvar nativeEscape = typeof CSS !== 'undefined' && CSS.escape;\nvar escape = (function (str) {\n  return nativeEscape ? nativeEscape(str) : str.replace(escapeRegex, '\\\\$1');\n});\n\nvar BaseStyleRule =\n/*#__PURE__*/\nfunction () {\n  function BaseStyleRule(key, style, options) {\n    this.type = 'style';\n    this.isProcessed = false;\n    var sheet = options.sheet,\n        Renderer = options.Renderer;\n    this.key = key;\n    this.options = options;\n    this.style = style;\n    if (sheet) this.renderer = sheet.renderer;else if (Renderer) this.renderer = new Renderer();\n  }\n  /**\n   * Get or set a style property.\n   */\n\n\n  var _proto = BaseStyleRule.prototype;\n\n  _proto.prop = function prop(name, value, options) {\n    // It's a getter.\n    if (value === undefined) return this.style[name]; // Don't do anything if the value has not changed.\n\n    var force = options ? options.force : false;\n    if (!force && this.style[name] === value) return this;\n    var newValue = value;\n\n    if (!options || options.process !== false) {\n      newValue = this.options.jss.plugins.onChangeValue(value, name, this);\n    }\n\n    var isEmpty = newValue == null || newValue === false;\n    var isDefined = name in this.style; // Value is empty and wasn't defined before.\n\n    if (isEmpty && !isDefined && !force) return this; // We are going to remove this value.\n\n    var remove = isEmpty && isDefined;\n    if (remove) delete this.style[name];else this.style[name] = newValue; // Renderable is defined if StyleSheet option `link` is true.\n\n    if (this.renderable && this.renderer) {\n      if (remove) this.renderer.removeProperty(this.renderable, name);else this.renderer.setProperty(this.renderable, name, newValue);\n      return this;\n    }\n\n    var sheet = this.options.sheet;\n\n    if (sheet && sheet.attached) {\n      process.env.NODE_ENV !== \"production\" ? warning(false, '[JSS] Rule is not linked. Missing sheet option \"link: true\".') : void 0;\n    }\n\n    return this;\n  };\n\n  return BaseStyleRule;\n}();\nvar StyleRule =\n/*#__PURE__*/\nfunction (_BaseStyleRule) {\n  _inheritsLoose(StyleRule, _BaseStyleRule);\n\n  function StyleRule(key, style, options) {\n    var _this;\n\n    _this = _BaseStyleRule.call(this, key, style, options) || this;\n    var selector = options.selector,\n        scoped = options.scoped,\n        sheet = options.sheet,\n        generateId = options.generateId;\n\n    if (selector) {\n      _this.selectorText = selector;\n    } else if (scoped !== false) {\n      _this.id = generateId(_assertThisInitialized(_assertThisInitialized(_this)), sheet);\n      _this.selectorText = \".\" + escape(_this.id);\n    }\n\n    return _this;\n  }\n  /**\n   * Set selector string.\n   * Attention: use this with caution. Most browsers didn't implement\n   * selectorText setter, so this may result in rerendering of entire Style Sheet.\n   */\n\n\n  var _proto2 = StyleRule.prototype;\n\n  /**\n   * Apply rule to an element inline.\n   */\n  _proto2.applyTo = function applyTo(renderable) {\n    var renderer = this.renderer;\n\n    if (renderer) {\n      var json = this.toJSON();\n\n      for (var prop in json) {\n        renderer.setProperty(renderable, prop, json[prop]);\n      }\n    }\n\n    return this;\n  }\n  /**\n   * Returns JSON representation of the rule.\n   * Fallbacks are not supported.\n   * Useful for inline styles.\n   */\n  ;\n\n  _proto2.toJSON = function toJSON() {\n    var json = {};\n\n    for (var prop in this.style) {\n      var value = this.style[prop];\n      if (typeof value !== 'object') json[prop] = value;else if (Array.isArray(value)) json[prop] = toCssValue(value);\n    }\n\n    return json;\n  }\n  /**\n   * Generates a CSS string.\n   */\n  ;\n\n  _proto2.toString = function toString(options) {\n    var sheet = this.options.sheet;\n    var link = sheet ? sheet.options.link : false;\n    var opts = link ? _extends({}, options, {\n      allowEmpty: true\n    }) : options;\n    return toCss(this.selectorText, this.style, opts);\n  };\n\n  _createClass(StyleRule, [{\n    key: \"selector\",\n    set: function set(selector) {\n      if (selector === this.selectorText) return;\n      this.selectorText = selector;\n      var renderer = this.renderer,\n          renderable = this.renderable;\n      if (!renderable || !renderer) return;\n      var hasChanged = renderer.setSelector(renderable, selector); // If selector setter is not implemented, rerender the rule.\n\n      if (!hasChanged) {\n        renderer.replaceRule(renderable, this);\n      }\n    }\n    /**\n     * Get selector string.\n     */\n    ,\n    get: function get() {\n      return this.selectorText;\n    }\n  }]);\n\n  return StyleRule;\n}(BaseStyleRule);\nvar pluginStyleRule = {\n  onCreateRule: function onCreateRule(key, style, options) {\n    if (key[0] === '@' || options.parent && options.parent.type === 'keyframes') {\n      return null;\n    }\n\n    return new StyleRule(key, style, options);\n  }\n};\n\nvar defaultToStringOptions = {\n  indent: 1,\n  children: true\n};\nvar atRegExp = /@([\\w-]+)/;\n/**\n * Conditional rule for @media, @supports\n */\n\nvar ConditionalRule =\n/*#__PURE__*/\nfunction () {\n  function ConditionalRule(key, styles, options) {\n    this.type = 'conditional';\n    this.isProcessed = false;\n    this.key = key;\n    var atMatch = key.match(atRegExp);\n    this.at = atMatch ? atMatch[1] : 'unknown'; // Key might contain a unique suffix in case the `name` passed by user was duplicate.\n\n    this.query = options.name || \"@\" + this.at;\n    this.options = options;\n    this.rules = new RuleList(_extends({}, options, {\n      parent: this\n    }));\n\n    for (var name in styles) {\n      this.rules.add(name, styles[name]);\n    }\n\n    this.rules.process();\n  }\n  /**\n   * Get a rule.\n   */\n\n\n  var _proto = ConditionalRule.prototype;\n\n  _proto.getRule = function getRule(name) {\n    return this.rules.get(name);\n  }\n  /**\n   * Get index of a rule.\n   */\n  ;\n\n  _proto.indexOf = function indexOf(rule) {\n    return this.rules.indexOf(rule);\n  }\n  /**\n   * Create and register rule, run plugins.\n   */\n  ;\n\n  _proto.addRule = function addRule(name, style, options) {\n    var rule = this.rules.add(name, style, options);\n    if (!rule) return null;\n    this.options.jss.plugins.onProcessRule(rule);\n    return rule;\n  }\n  /**\n   * Generates a CSS string.\n   */\n  ;\n\n  _proto.toString = function toString(options) {\n    if (options === void 0) {\n      options = defaultToStringOptions;\n    }\n\n    var _getWhitespaceSymbols = getWhitespaceSymbols(options),\n        linebreak = _getWhitespaceSymbols.linebreak;\n\n    if (options.indent == null) options.indent = defaultToStringOptions.indent;\n    if (options.children == null) options.children = defaultToStringOptions.children;\n\n    if (options.children === false) {\n      return this.query + \" {}\";\n    }\n\n    var children = this.rules.toString(options);\n    return children ? this.query + \" {\" + linebreak + children + linebreak + \"}\" : '';\n  };\n\n  return ConditionalRule;\n}();\nvar keyRegExp = /@media|@supports\\s+/;\nvar pluginConditionalRule = {\n  onCreateRule: function onCreateRule(key, styles, options) {\n    return keyRegExp.test(key) ? new ConditionalRule(key, styles, options) : null;\n  }\n};\n\nvar defaultToStringOptions$1 = {\n  indent: 1,\n  children: true\n};\nvar nameRegExp = /@keyframes\\s+([\\w-]+)/;\n/**\n * Rule for @keyframes\n */\n\nvar KeyframesRule =\n/*#__PURE__*/\nfunction () {\n  function KeyframesRule(key, frames, options) {\n    this.type = 'keyframes';\n    this.at = '@keyframes';\n    this.isProcessed = false;\n    var nameMatch = key.match(nameRegExp);\n\n    if (nameMatch && nameMatch[1]) {\n      this.name = nameMatch[1];\n    } else {\n      this.name = 'noname';\n      process.env.NODE_ENV !== \"production\" ? warning(false, \"[JSS] Bad keyframes name \" + key) : void 0;\n    }\n\n    this.key = this.type + \"-\" + this.name;\n    this.options = options;\n    var scoped = options.scoped,\n        sheet = options.sheet,\n        generateId = options.generateId;\n    this.id = scoped === false ? this.name : escape(generateId(this, sheet));\n    this.rules = new RuleList(_extends({}, options, {\n      parent: this\n    }));\n\n    for (var name in frames) {\n      this.rules.add(name, frames[name], _extends({}, options, {\n        parent: this\n      }));\n    }\n\n    this.rules.process();\n  }\n  /**\n   * Generates a CSS string.\n   */\n\n\n  var _proto = KeyframesRule.prototype;\n\n  _proto.toString = function toString(options) {\n    if (options === void 0) {\n      options = defaultToStringOptions$1;\n    }\n\n    var _getWhitespaceSymbols = getWhitespaceSymbols(options),\n        linebreak = _getWhitespaceSymbols.linebreak;\n\n    if (options.indent == null) options.indent = defaultToStringOptions$1.indent;\n    if (options.children == null) options.children = defaultToStringOptions$1.children;\n\n    if (options.children === false) {\n      return this.at + \" \" + this.id + \" {}\";\n    }\n\n    var children = this.rules.toString(options);\n    if (children) children = \"\" + linebreak + children + linebreak;\n    return this.at + \" \" + this.id + \" {\" + children + \"}\";\n  };\n\n  return KeyframesRule;\n}();\nvar keyRegExp$1 = /@keyframes\\s+/;\nvar refRegExp = /\\$([\\w-]+)/g;\n\nvar findReferencedKeyframe = function findReferencedKeyframe(val, keyframes) {\n  if (typeof val === 'string') {\n    return val.replace(refRegExp, function (match, name) {\n      if (name in keyframes) {\n        return keyframes[name];\n      }\n\n      process.env.NODE_ENV !== \"production\" ? warning(false, \"[JSS] Referenced keyframes rule \\\"\" + name + \"\\\" is not defined.\") : void 0;\n      return match;\n    });\n  }\n\n  return val;\n};\n/**\n * Replace the reference for a animation name.\n */\n\n\nvar replaceRef = function replaceRef(style, prop, keyframes) {\n  var value = style[prop];\n  var refKeyframe = findReferencedKeyframe(value, keyframes);\n\n  if (refKeyframe !== value) {\n    style[prop] = refKeyframe;\n  }\n};\n\nvar pluginKeyframesRule = {\n  onCreateRule: function onCreateRule(key, frames, options) {\n    return typeof key === 'string' && keyRegExp$1.test(key) ? new KeyframesRule(key, frames, options) : null;\n  },\n  // Animation name ref replacer.\n  onProcessStyle: function onProcessStyle(style, rule, sheet) {\n    if (rule.type !== 'style' || !sheet) return style;\n    if ('animation-name' in style) replaceRef(style, 'animation-name', sheet.keyframes);\n    if ('animation' in style) replaceRef(style, 'animation', sheet.keyframes);\n    return style;\n  },\n  onChangeValue: function onChangeValue(val, prop, rule) {\n    var sheet = rule.options.sheet;\n\n    if (!sheet) {\n      return val;\n    }\n\n    switch (prop) {\n      case 'animation':\n        return findReferencedKeyframe(val, sheet.keyframes);\n\n      case 'animation-name':\n        return findReferencedKeyframe(val, sheet.keyframes);\n\n      default:\n        return val;\n    }\n  }\n};\n\nvar KeyframeRule =\n/*#__PURE__*/\nfunction (_BaseStyleRule) {\n  _inheritsLoose(KeyframeRule, _BaseStyleRule);\n\n  function KeyframeRule() {\n    return _BaseStyleRule.apply(this, arguments) || this;\n  }\n\n  var _proto = KeyframeRule.prototype;\n\n  /**\n   * Generates a CSS string.\n   */\n  _proto.toString = function toString(options) {\n    var sheet = this.options.sheet;\n    var link = sheet ? sheet.options.link : false;\n    var opts = link ? _extends({}, options, {\n      allowEmpty: true\n    }) : options;\n    return toCss(this.key, this.style, opts);\n  };\n\n  return KeyframeRule;\n}(BaseStyleRule);\nvar pluginKeyframeRule = {\n  onCreateRule: function onCreateRule(key, style, options) {\n    if (options.parent && options.parent.type === 'keyframes') {\n      return new KeyframeRule(key, style, options);\n    }\n\n    return null;\n  }\n};\n\nvar FontFaceRule =\n/*#__PURE__*/\nfunction () {\n  function FontFaceRule(key, style, options) {\n    this.type = 'font-face';\n    this.at = '@font-face';\n    this.isProcessed = false;\n    this.key = key;\n    this.style = style;\n    this.options = options;\n  }\n  /**\n   * Generates a CSS string.\n   */\n\n\n  var _proto = FontFaceRule.prototype;\n\n  _proto.toString = function toString(options) {\n    var _getWhitespaceSymbols = getWhitespaceSymbols(options),\n        linebreak = _getWhitespaceSymbols.linebreak;\n\n    if (Array.isArray(this.style)) {\n      var str = '';\n\n      for (var index = 0; index < this.style.length; index++) {\n        str += toCss(this.at, this.style[index]);\n        if (this.style[index + 1]) str += linebreak;\n      }\n\n      return str;\n    }\n\n    return toCss(this.at, this.style, options);\n  };\n\n  return FontFaceRule;\n}();\nvar keyRegExp$2 = /@font-face/;\nvar pluginFontFaceRule = {\n  onCreateRule: function onCreateRule(key, style, options) {\n    return keyRegExp$2.test(key) ? new FontFaceRule(key, style, options) : null;\n  }\n};\n\nvar ViewportRule =\n/*#__PURE__*/\nfunction () {\n  function ViewportRule(key, style, options) {\n    this.type = 'viewport';\n    this.at = '@viewport';\n    this.isProcessed = false;\n    this.key = key;\n    this.style = style;\n    this.options = options;\n  }\n  /**\n   * Generates a CSS string.\n   */\n\n\n  var _proto = ViewportRule.prototype;\n\n  _proto.toString = function toString(options) {\n    return toCss(this.key, this.style, options);\n  };\n\n  return ViewportRule;\n}();\nvar pluginViewportRule = {\n  onCreateRule: function onCreateRule(key, style, options) {\n    return key === '@viewport' || key === '@-ms-viewport' ? new ViewportRule(key, style, options) : null;\n  }\n};\n\nvar SimpleRule =\n/*#__PURE__*/\nfunction () {\n  function SimpleRule(key, value, options) {\n    this.type = 'simple';\n    this.isProcessed = false;\n    this.key = key;\n    this.value = value;\n    this.options = options;\n  }\n  /**\n   * Generates a CSS string.\n   */\n  // eslint-disable-next-line no-unused-vars\n\n\n  var _proto = SimpleRule.prototype;\n\n  _proto.toString = function toString(options) {\n    if (Array.isArray(this.value)) {\n      var str = '';\n\n      for (var index = 0; index < this.value.length; index++) {\n        str += this.key + \" \" + this.value[index] + \";\";\n        if (this.value[index + 1]) str += '\\n';\n      }\n\n      return str;\n    }\n\n    return this.key + \" \" + this.value + \";\";\n  };\n\n  return SimpleRule;\n}();\nvar keysMap = {\n  '@charset': true,\n  '@import': true,\n  '@namespace': true\n};\nvar pluginSimpleRule = {\n  onCreateRule: function onCreateRule(key, value, options) {\n    return key in keysMap ? new SimpleRule(key, value, options) : null;\n  }\n};\n\nvar plugins = [pluginStyleRule, pluginConditionalRule, pluginKeyframesRule, pluginKeyframeRule, pluginFontFaceRule, pluginViewportRule, pluginSimpleRule];\n\nvar defaultUpdateOptions = {\n  process: true\n};\nvar forceUpdateOptions = {\n  force: true,\n  process: true\n  /**\n   * Contains rules objects and allows adding/removing etc.\n   * Is used for e.g. by `StyleSheet` or `ConditionalRule`.\n   */\n\n};\n\nvar RuleList =\n/*#__PURE__*/\nfunction () {\n  // Rules registry for access by .get() method.\n  // It contains the same rule registered by name and by selector.\n  // Original styles object.\n  // Used to ensure correct rules order.\n  function RuleList(options) {\n    this.map = {};\n    this.raw = {};\n    this.index = [];\n    this.counter = 0;\n    this.options = options;\n    this.classes = options.classes;\n    this.keyframes = options.keyframes;\n  }\n  /**\n   * Create and register rule.\n   *\n   * Will not render after Style Sheet was rendered the first time.\n   */\n\n\n  var _proto = RuleList.prototype;\n\n  _proto.add = function add(name, decl, ruleOptions) {\n    var _this$options = this.options,\n        parent = _this$options.parent,\n        sheet = _this$options.sheet,\n        jss = _this$options.jss,\n        Renderer = _this$options.Renderer,\n        generateId = _this$options.generateId,\n        scoped = _this$options.scoped;\n\n    var options = _extends({\n      classes: this.classes,\n      parent: parent,\n      sheet: sheet,\n      jss: jss,\n      Renderer: Renderer,\n      generateId: generateId,\n      scoped: scoped,\n      name: name,\n      keyframes: this.keyframes,\n      selector: undefined\n    }, ruleOptions); // When user uses .createStyleSheet(), duplicate names are not possible, but\n    // `sheet.addRule()` opens the door for any duplicate rule name. When this happens\n    // we need to make the key unique within this RuleList instance scope.\n\n\n    var key = name;\n\n    if (name in this.raw) {\n      key = name + \"-d\" + this.counter++;\n    } // We need to save the original decl before creating the rule\n    // because cache plugin needs to use it as a key to return a cached rule.\n\n\n    this.raw[key] = decl;\n\n    if (key in this.classes) {\n      // E.g. rules inside of @media container\n      options.selector = \".\" + escape(this.classes[key]);\n    }\n\n    var rule = createRule(key, decl, options);\n    if (!rule) return null;\n    this.register(rule);\n    var index = options.index === undefined ? this.index.length : options.index;\n    this.index.splice(index, 0, rule);\n    return rule;\n  }\n  /**\n   * Get a rule.\n   */\n  ;\n\n  _proto.get = function get(name) {\n    return this.map[name];\n  }\n  /**\n   * Delete a rule.\n   */\n  ;\n\n  _proto.remove = function remove(rule) {\n    this.unregister(rule);\n    delete this.raw[rule.key];\n    this.index.splice(this.index.indexOf(rule), 1);\n  }\n  /**\n   * Get index of a rule.\n   */\n  ;\n\n  _proto.indexOf = function indexOf(rule) {\n    return this.index.indexOf(rule);\n  }\n  /**\n   * Run `onProcessRule()` plugins on every rule.\n   */\n  ;\n\n  _proto.process = function process() {\n    var plugins = this.options.jss.plugins; // We need to clone array because if we modify the index somewhere else during a loop\n    // we end up with very hard-to-track-down side effects.\n\n    this.index.slice(0).forEach(plugins.onProcessRule, plugins);\n  }\n  /**\n   * Register a rule in `.map`, `.classes` and `.keyframes` maps.\n   */\n  ;\n\n  _proto.register = function register(rule) {\n    this.map[rule.key] = rule;\n\n    if (rule instanceof StyleRule) {\n      this.map[rule.selector] = rule;\n      if (rule.id) this.classes[rule.key] = rule.id;\n    } else if (rule instanceof KeyframesRule && this.keyframes) {\n      this.keyframes[rule.name] = rule.id;\n    }\n  }\n  /**\n   * Unregister a rule.\n   */\n  ;\n\n  _proto.unregister = function unregister(rule) {\n    delete this.map[rule.key];\n\n    if (rule instanceof StyleRule) {\n      delete this.map[rule.selector];\n      delete this.classes[rule.key];\n    } else if (rule instanceof KeyframesRule) {\n      delete this.keyframes[rule.name];\n    }\n  }\n  /**\n   * Update the function values with a new data.\n   */\n  ;\n\n  _proto.update = function update() {\n    var name;\n    var data;\n    var options;\n\n    if (typeof (arguments.length <= 0 ? undefined : arguments[0]) === 'string') {\n      name = arguments.length <= 0 ? undefined : arguments[0];\n      data = arguments.length <= 1 ? undefined : arguments[1];\n      options = arguments.length <= 2 ? undefined : arguments[2];\n    } else {\n      data = arguments.length <= 0 ? undefined : arguments[0];\n      options = arguments.length <= 1 ? undefined : arguments[1];\n      name = null;\n    }\n\n    if (name) {\n      this.updateOne(this.map[name], data, options);\n    } else {\n      for (var index = 0; index < this.index.length; index++) {\n        this.updateOne(this.index[index], data, options);\n      }\n    }\n  }\n  /**\n   * Execute plugins, update rule props.\n   */\n  ;\n\n  _proto.updateOne = function updateOne(rule, data, options) {\n    if (options === void 0) {\n      options = defaultUpdateOptions;\n    }\n\n    var _this$options2 = this.options,\n        plugins = _this$options2.jss.plugins,\n        sheet = _this$options2.sheet; // It is a rules container like for e.g. ConditionalRule.\n\n    if (rule.rules instanceof RuleList) {\n      rule.rules.update(data, options);\n      return;\n    }\n\n    var style = rule.style;\n    plugins.onUpdate(data, rule, sheet, options); // We rely on a new `style` ref in case it was mutated during onUpdate hook.\n\n    if (options.process && style && style !== rule.style) {\n      // We need to run the plugins in case new `style` relies on syntax plugins.\n      plugins.onProcessStyle(rule.style, rule, sheet); // Update and add props.\n\n      for (var prop in rule.style) {\n        var nextValue = rule.style[prop];\n        var prevValue = style[prop]; // We need to use `force: true` because `rule.style` has been updated during onUpdate hook, so `rule.prop()` will not update the CSSOM rule.\n        // We do this comparison to avoid unneeded `rule.prop()` calls, since we have the old `style` object here.\n\n        if (nextValue !== prevValue) {\n          rule.prop(prop, nextValue, forceUpdateOptions);\n        }\n      } // Remove props.\n\n\n      for (var _prop in style) {\n        var _nextValue = rule.style[_prop];\n        var _prevValue = style[_prop]; // We need to use `force: true` because `rule.style` has been updated during onUpdate hook, so `rule.prop()` will not update the CSSOM rule.\n        // We do this comparison to avoid unneeded `rule.prop()` calls, since we have the old `style` object here.\n\n        if (_nextValue == null && _nextValue !== _prevValue) {\n          rule.prop(_prop, null, forceUpdateOptions);\n        }\n      }\n    }\n  }\n  /**\n   * Convert rules to a CSS string.\n   */\n  ;\n\n  _proto.toString = function toString(options) {\n    var str = '';\n    var sheet = this.options.sheet;\n    var link = sheet ? sheet.options.link : false;\n\n    var _getWhitespaceSymbols = getWhitespaceSymbols(options),\n        linebreak = _getWhitespaceSymbols.linebreak;\n\n    for (var index = 0; index < this.index.length; index++) {\n      var rule = this.index[index];\n      var css = rule.toString(options); // No need to render an empty rule.\n\n      if (!css && !link) continue;\n      if (str) str += linebreak;\n      str += css;\n    }\n\n    return str;\n  };\n\n  return RuleList;\n}();\n\nvar StyleSheet =\n/*#__PURE__*/\nfunction () {\n  function StyleSheet(styles, options) {\n    this.attached = false;\n    this.deployed = false;\n    this.classes = {};\n    this.keyframes = {};\n    this.options = _extends({}, options, {\n      sheet: this,\n      parent: this,\n      classes: this.classes,\n      keyframes: this.keyframes\n    });\n\n    if (options.Renderer) {\n      this.renderer = new options.Renderer(this);\n    }\n\n    this.rules = new RuleList(this.options);\n\n    for (var name in styles) {\n      this.rules.add(name, styles[name]);\n    }\n\n    this.rules.process();\n  }\n  /**\n   * Attach renderable to the render tree.\n   */\n\n\n  var _proto = StyleSheet.prototype;\n\n  _proto.attach = function attach() {\n    if (this.attached) return this;\n    if (this.renderer) this.renderer.attach();\n    this.attached = true; // Order is important, because we can't use insertRule API if style element is not attached.\n\n    if (!this.deployed) this.deploy();\n    return this;\n  }\n  /**\n   * Remove renderable from render tree.\n   */\n  ;\n\n  _proto.detach = function detach() {\n    if (!this.attached) return this;\n    if (this.renderer) this.renderer.detach();\n    this.attached = false;\n    return this;\n  }\n  /**\n   * Add a rule to the current stylesheet.\n   * Will insert a rule also after the stylesheet has been rendered first time.\n   */\n  ;\n\n  _proto.addRule = function addRule(name, decl, options) {\n    var queue = this.queue; // Plugins can create rules.\n    // In order to preserve the right order, we need to queue all `.addRule` calls,\n    // which happen after the first `rules.add()` call.\n\n    if (this.attached && !queue) this.queue = [];\n    var rule = this.rules.add(name, decl, options);\n    if (!rule) return null;\n    this.options.jss.plugins.onProcessRule(rule);\n\n    if (this.attached) {\n      if (!this.deployed) return rule; // Don't insert rule directly if there is no stringified version yet.\n      // It will be inserted all together when .attach is called.\n\n      if (queue) queue.push(rule);else {\n        this.insertRule(rule);\n\n        if (this.queue) {\n          this.queue.forEach(this.insertRule, this);\n          this.queue = undefined;\n        }\n      }\n      return rule;\n    } // We can't add rules to a detached style node.\n    // We will redeploy the sheet once user will attach it.\n\n\n    this.deployed = false;\n    return rule;\n  }\n  /**\n   * Insert rule into the StyleSheet\n   */\n  ;\n\n  _proto.insertRule = function insertRule(rule) {\n    if (this.renderer) {\n      this.renderer.insertRule(rule);\n    }\n  }\n  /**\n   * Create and add rules.\n   * Will render also after Style Sheet was rendered the first time.\n   */\n  ;\n\n  _proto.addRules = function addRules(styles, options) {\n    var added = [];\n\n    for (var name in styles) {\n      var rule = this.addRule(name, styles[name], options);\n      if (rule) added.push(rule);\n    }\n\n    return added;\n  }\n  /**\n   * Get a rule by name.\n   */\n  ;\n\n  _proto.getRule = function getRule(name) {\n    return this.rules.get(name);\n  }\n  /**\n   * Delete a rule by name.\n   * Returns `true`: if rule has been deleted from the DOM.\n   */\n  ;\n\n  _proto.deleteRule = function deleteRule(name) {\n    var rule = typeof name === 'object' ? name : this.rules.get(name);\n\n    if (!rule || // Style sheet was created without link: true and attached, in this case we\n    // won't be able to remove the CSS rule from the DOM.\n    this.attached && !rule.renderable) {\n      return false;\n    }\n\n    this.rules.remove(rule);\n\n    if (this.attached && rule.renderable && this.renderer) {\n      return this.renderer.deleteRule(rule.renderable);\n    }\n\n    return true;\n  }\n  /**\n   * Get index of a rule.\n   */\n  ;\n\n  _proto.indexOf = function indexOf(rule) {\n    return this.rules.indexOf(rule);\n  }\n  /**\n   * Deploy pure CSS string to a renderable.\n   */\n  ;\n\n  _proto.deploy = function deploy() {\n    if (this.renderer) this.renderer.deploy();\n    this.deployed = true;\n    return this;\n  }\n  /**\n   * Update the function values with a new data.\n   */\n  ;\n\n  _proto.update = function update() {\n    var _this$rules;\n\n    (_this$rules = this.rules).update.apply(_this$rules, arguments);\n\n    return this;\n  }\n  /**\n   * Updates a single rule.\n   */\n  ;\n\n  _proto.updateOne = function updateOne(rule, data, options) {\n    this.rules.updateOne(rule, data, options);\n    return this;\n  }\n  /**\n   * Convert rules to a CSS string.\n   */\n  ;\n\n  _proto.toString = function toString(options) {\n    return this.rules.toString(options);\n  };\n\n  return StyleSheet;\n}();\n\nvar PluginsRegistry =\n/*#__PURE__*/\nfunction () {\n  function PluginsRegistry() {\n    this.plugins = {\n      internal: [],\n      external: []\n    };\n    this.registry = {};\n  }\n\n  var _proto = PluginsRegistry.prototype;\n\n  /**\n   * Call `onCreateRule` hooks and return an object if returned by a hook.\n   */\n  _proto.onCreateRule = function onCreateRule(name, decl, options) {\n    for (var i = 0; i < this.registry.onCreateRule.length; i++) {\n      var rule = this.registry.onCreateRule[i](name, decl, options);\n      if (rule) return rule;\n    }\n\n    return null;\n  }\n  /**\n   * Call `onProcessRule` hooks.\n   */\n  ;\n\n  _proto.onProcessRule = function onProcessRule(rule) {\n    if (rule.isProcessed) return;\n    var sheet = rule.options.sheet;\n\n    for (var i = 0; i < this.registry.onProcessRule.length; i++) {\n      this.registry.onProcessRule[i](rule, sheet);\n    }\n\n    if (rule.style) this.onProcessStyle(rule.style, rule, sheet);\n    rule.isProcessed = true;\n  }\n  /**\n   * Call `onProcessStyle` hooks.\n   */\n  ;\n\n  _proto.onProcessStyle = function onProcessStyle(style, rule, sheet) {\n    for (var i = 0; i < this.registry.onProcessStyle.length; i++) {\n      rule.style = this.registry.onProcessStyle[i](rule.style, rule, sheet);\n    }\n  }\n  /**\n   * Call `onProcessSheet` hooks.\n   */\n  ;\n\n  _proto.onProcessSheet = function onProcessSheet(sheet) {\n    for (var i = 0; i < this.registry.onProcessSheet.length; i++) {\n      this.registry.onProcessSheet[i](sheet);\n    }\n  }\n  /**\n   * Call `onUpdate` hooks.\n   */\n  ;\n\n  _proto.onUpdate = function onUpdate(data, rule, sheet, options) {\n    for (var i = 0; i < this.registry.onUpdate.length; i++) {\n      this.registry.onUpdate[i](data, rule, sheet, options);\n    }\n  }\n  /**\n   * Call `onChangeValue` hooks.\n   */\n  ;\n\n  _proto.onChangeValue = function onChangeValue(value, prop, rule) {\n    var processedValue = value;\n\n    for (var i = 0; i < this.registry.onChangeValue.length; i++) {\n      processedValue = this.registry.onChangeValue[i](processedValue, prop, rule);\n    }\n\n    return processedValue;\n  }\n  /**\n   * Register a plugin.\n   */\n  ;\n\n  _proto.use = function use(newPlugin, options) {\n    if (options === void 0) {\n      options = {\n        queue: 'external'\n      };\n    }\n\n    var plugins = this.plugins[options.queue]; // Avoids applying same plugin twice, at least based on ref.\n\n    if (plugins.indexOf(newPlugin) !== -1) {\n      return;\n    }\n\n    plugins.push(newPlugin);\n    this.registry = [].concat(this.plugins.external, this.plugins.internal).reduce(function (registry, plugin) {\n      for (var name in plugin) {\n        if (name in registry) {\n          registry[name].push(plugin[name]);\n        } else {\n          process.env.NODE_ENV !== \"production\" ? warning(false, \"[JSS] Unknown hook \\\"\" + name + \"\\\".\") : void 0;\n        }\n      }\n\n      return registry;\n    }, {\n      onCreateRule: [],\n      onProcessRule: [],\n      onProcessStyle: [],\n      onProcessSheet: [],\n      onChangeValue: [],\n      onUpdate: []\n    });\n  };\n\n  return PluginsRegistry;\n}();\n\n/**\n * Sheets registry to access all instances in one place.\n */\n\nvar SheetsRegistry =\n/*#__PURE__*/\nfunction () {\n  function SheetsRegistry() {\n    this.registry = [];\n  }\n\n  var _proto = SheetsRegistry.prototype;\n\n  /**\n   * Register a Style Sheet.\n   */\n  _proto.add = function add(sheet) {\n    var registry = this.registry;\n    var index = sheet.options.index;\n    if (registry.indexOf(sheet) !== -1) return;\n\n    if (registry.length === 0 || index >= this.index) {\n      registry.push(sheet);\n      return;\n    } // Find a position.\n\n\n    for (var i = 0; i < registry.length; i++) {\n      if (registry[i].options.index > index) {\n        registry.splice(i, 0, sheet);\n        return;\n      }\n    }\n  }\n  /**\n   * Reset the registry.\n   */\n  ;\n\n  _proto.reset = function reset() {\n    this.registry = [];\n  }\n  /**\n   * Remove a Style Sheet.\n   */\n  ;\n\n  _proto.remove = function remove(sheet) {\n    var index = this.registry.indexOf(sheet);\n    this.registry.splice(index, 1);\n  }\n  /**\n   * Convert all attached sheets to a CSS string.\n   */\n  ;\n\n  _proto.toString = function toString(_temp) {\n    var _ref = _temp === void 0 ? {} : _temp,\n        attached = _ref.attached,\n        options = _objectWithoutPropertiesLoose(_ref, [\"attached\"]);\n\n    var _getWhitespaceSymbols = getWhitespaceSymbols(options),\n        linebreak = _getWhitespaceSymbols.linebreak;\n\n    var css = '';\n\n    for (var i = 0; i < this.registry.length; i++) {\n      var sheet = this.registry[i];\n\n      if (attached != null && sheet.attached !== attached) {\n        continue;\n      }\n\n      if (css) css += linebreak;\n      css += sheet.toString(options);\n    }\n\n    return css;\n  };\n\n  _createClass(SheetsRegistry, [{\n    key: \"index\",\n\n    /**\n     * Current highest index number.\n     */\n    get: function get() {\n      return this.registry.length === 0 ? 0 : this.registry[this.registry.length - 1].options.index;\n    }\n  }]);\n\n  return SheetsRegistry;\n}();\n\n/**\n * This is a global sheets registry. Only DomRenderer will add sheets to it.\n * On the server one should use an own SheetsRegistry instance and add the\n * sheets to it, because you need to make sure to create a new registry for\n * each request in order to not leak sheets across requests.\n */\n\nvar sheets = new SheetsRegistry();\n\n/* eslint-disable */\n\n/**\n * Now that `globalThis` is available on most platforms\n * (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/globalThis#browser_compatibility)\n * we check for `globalThis` first. `globalThis` is necessary for jss\n * to run in Agoric's secure version of JavaScript (SES). Under SES,\n * `globalThis` exists, but `window`, `self`, and `Function('return\n * this')()` are all undefined for security reasons.\n *\n * https://github.com/zloirock/core-js/issues/86#issuecomment-115759028\n */\nvar globalThis$1 = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' && window.Math === Math ? window : typeof self !== 'undefined' && self.Math === Math ? self : Function('return this')();\n\nvar ns = '2f1acc6c3a606b082e5eef5e54414ffb';\nif (globalThis$1[ns] == null) globalThis$1[ns] = 0; // Bundle may contain multiple JSS versions at the same time. In order to identify\n// the current version with just one short number and use it for classes generation\n// we use a counter. Also it is more accurate, because user can manually reevaluate\n// the module.\n\nvar moduleId = globalThis$1[ns]++;\n\nvar maxRules = 1e10;\n/**\n * Returns a function which generates unique class names based on counters.\n * When new generator function is created, rule counter is reseted.\n * We need to reset the rule counter for SSR for each request.\n */\n\nvar createGenerateId = function createGenerateId(options) {\n  if (options === void 0) {\n    options = {};\n  }\n\n  var ruleCounter = 0;\n\n  var generateId = function generateId(rule, sheet) {\n    ruleCounter += 1;\n\n    if (ruleCounter > maxRules) {\n      process.env.NODE_ENV !== \"production\" ? warning(false, \"[JSS] You might have a memory leak. Rule counter is at \" + ruleCounter + \".\") : void 0;\n    }\n\n    var jssId = '';\n    var prefix = '';\n\n    if (sheet) {\n      if (sheet.options.classNamePrefix) {\n        prefix = sheet.options.classNamePrefix;\n      }\n\n      if (sheet.options.jss.id != null) {\n        jssId = String(sheet.options.jss.id);\n      }\n    }\n\n    if (options.minify) {\n      // Using \"c\" because a number can't be the first char in a class name.\n      return \"\" + (prefix || 'c') + moduleId + jssId + ruleCounter;\n    }\n\n    return prefix + rule.key + \"-\" + moduleId + (jssId ? \"-\" + jssId : '') + \"-\" + ruleCounter;\n  };\n\n  return generateId;\n};\n\n/**\n * Cache the value from the first time a function is called.\n */\n\nvar memoize = function memoize(fn) {\n  var value;\n  return function () {\n    if (!value) value = fn();\n    return value;\n  };\n};\n/**\n * Get a style property value.\n */\n\n\nvar getPropertyValue = function getPropertyValue(cssRule, prop) {\n  try {\n    // Support CSSTOM.\n    if (cssRule.attributeStyleMap) {\n      return cssRule.attributeStyleMap.get(prop);\n    }\n\n    return cssRule.style.getPropertyValue(prop);\n  } catch (err) {\n    // IE may throw if property is unknown.\n    return '';\n  }\n};\n/**\n * Set a style property.\n */\n\n\nvar setProperty = function setProperty(cssRule, prop, value) {\n  try {\n    var cssValue = value;\n\n    if (Array.isArray(value)) {\n      cssValue = toCssValue(value, true);\n\n      if (value[value.length - 1] === '!important') {\n        cssRule.style.setProperty(prop, cssValue, 'important');\n        return true;\n      }\n    } // Support CSSTOM.\n\n\n    if (cssRule.attributeStyleMap) {\n      cssRule.attributeStyleMap.set(prop, cssValue);\n    } else {\n      cssRule.style.setProperty(prop, cssValue);\n    }\n  } catch (err) {\n    // IE may throw if property is unknown.\n    return false;\n  }\n\n  return true;\n};\n/**\n * Remove a style property.\n */\n\n\nvar removeProperty = function removeProperty(cssRule, prop) {\n  try {\n    // Support CSSTOM.\n    if (cssRule.attributeStyleMap) {\n      cssRule.attributeStyleMap.delete(prop);\n    } else {\n      cssRule.style.removeProperty(prop);\n    }\n  } catch (err) {\n    process.env.NODE_ENV !== \"production\" ? warning(false, \"[JSS] DOMException \\\"\" + err.message + \"\\\" was thrown. Tried to remove property \\\"\" + prop + \"\\\".\") : void 0;\n  }\n};\n/**\n * Set the selector.\n */\n\n\nvar setSelector = function setSelector(cssRule, selectorText) {\n  cssRule.selectorText = selectorText; // Return false if setter was not successful.\n  // Currently works in chrome only.\n\n  return cssRule.selectorText === selectorText;\n};\n/**\n * Gets the `head` element upon the first call and caches it.\n * We assume it can't be null.\n */\n\n\nvar getHead = memoize(function () {\n  return document.querySelector('head');\n});\n/**\n * Find attached sheet with an index higher than the passed one.\n */\n\nfunction findHigherSheet(registry, options) {\n  for (var i = 0; i < registry.length; i++) {\n    var sheet = registry[i];\n\n    if (sheet.attached && sheet.options.index > options.index && sheet.options.insertionPoint === options.insertionPoint) {\n      return sheet;\n    }\n  }\n\n  return null;\n}\n/**\n * Find attached sheet with the highest index.\n */\n\n\nfunction findHighestSheet(registry, options) {\n  for (var i = registry.length - 1; i >= 0; i--) {\n    var sheet = registry[i];\n\n    if (sheet.attached && sheet.options.insertionPoint === options.insertionPoint) {\n      return sheet;\n    }\n  }\n\n  return null;\n}\n/**\n * Find a comment with \"jss\" inside.\n */\n\n\nfunction findCommentNode(text) {\n  var head = getHead();\n\n  for (var i = 0; i < head.childNodes.length; i++) {\n    var node = head.childNodes[i];\n\n    if (node.nodeType === 8 && node.nodeValue.trim() === text) {\n      return node;\n    }\n  }\n\n  return null;\n}\n/**\n * Find a node before which we can insert the sheet.\n */\n\n\nfunction findPrevNode(options) {\n  var registry = sheets.registry;\n\n  if (registry.length > 0) {\n    // Try to insert before the next higher sheet.\n    var sheet = findHigherSheet(registry, options);\n\n    if (sheet && sheet.renderer) {\n      return {\n        parent: sheet.renderer.element.parentNode,\n        node: sheet.renderer.element\n      };\n    } // Otherwise insert after the last attached.\n\n\n    sheet = findHighestSheet(registry, options);\n\n    if (sheet && sheet.renderer) {\n      return {\n        parent: sheet.renderer.element.parentNode,\n        node: sheet.renderer.element.nextSibling\n      };\n    }\n  } // Try to find a comment placeholder if registry is empty.\n\n\n  var insertionPoint = options.insertionPoint;\n\n  if (insertionPoint && typeof insertionPoint === 'string') {\n    var comment = findCommentNode(insertionPoint);\n\n    if (comment) {\n      return {\n        parent: comment.parentNode,\n        node: comment.nextSibling\n      };\n    } // If user specifies an insertion point and it can't be found in the document -\n    // bad specificity issues may appear.\n\n\n    process.env.NODE_ENV !== \"production\" ? warning(false, \"[JSS] Insertion point \\\"\" + insertionPoint + \"\\\" not found.\") : void 0;\n  }\n\n  return false;\n}\n/**\n * Insert style element into the DOM.\n */\n\n\nfunction insertStyle(style, options) {\n  var insertionPoint = options.insertionPoint;\n  var nextNode = findPrevNode(options);\n\n  if (nextNode !== false && nextNode.parent) {\n    nextNode.parent.insertBefore(style, nextNode.node);\n    return;\n  } // Works with iframes and any node types.\n\n\n  if (insertionPoint && typeof insertionPoint.nodeType === 'number') {\n    var insertionPointElement = insertionPoint;\n    var parentNode = insertionPointElement.parentNode;\n    if (parentNode) parentNode.insertBefore(style, insertionPointElement.nextSibling);else process.env.NODE_ENV !== \"production\" ? warning(false, '[JSS] Insertion point is not in the DOM.') : void 0;\n    return;\n  }\n\n  getHead().appendChild(style);\n}\n/**\n * Read jss nonce setting from the page if the user has set it.\n */\n\n\nvar getNonce = memoize(function () {\n  var node = document.querySelector('meta[property=\"csp-nonce\"]');\n  return node ? node.getAttribute('content') : null;\n});\n\nvar _insertRule = function insertRule(container, rule, index) {\n  try {\n    if ('insertRule' in container) {\n      container.insertRule(rule, index);\n    } // Keyframes rule.\n    else if ('appendRule' in container) {\n        container.appendRule(rule);\n      }\n  } catch (err) {\n    process.env.NODE_ENV !== \"production\" ? warning(false, \"[JSS] \" + err.message) : void 0;\n    return false;\n  }\n\n  return container.cssRules[index];\n};\n\nvar getValidRuleInsertionIndex = function getValidRuleInsertionIndex(container, index) {\n  var maxIndex = container.cssRules.length; // In case previous insertion fails, passed index might be wrong\n\n  if (index === undefined || index > maxIndex) {\n    // eslint-disable-next-line no-param-reassign\n    return maxIndex;\n  }\n\n  return index;\n};\n\nvar createStyle = function createStyle() {\n  var el = document.createElement('style'); // Without it, IE will have a broken source order specificity if we\n  // insert rules after we insert the style tag.\n  // It seems to kick-off the source order specificity algorithm.\n\n  el.textContent = '\\n';\n  return el;\n};\n\nvar DomRenderer =\n/*#__PURE__*/\nfunction () {\n  // Will be empty if link: true option is not set, because\n  // it is only for use together with insertRule API.\n  function DomRenderer(sheet) {\n    this.getPropertyValue = getPropertyValue;\n    this.setProperty = setProperty;\n    this.removeProperty = removeProperty;\n    this.setSelector = setSelector;\n    this.hasInsertedRules = false;\n    this.cssRules = [];\n    // There is no sheet when the renderer is used from a standalone StyleRule.\n    if (sheet) sheets.add(sheet);\n    this.sheet = sheet;\n\n    var _ref = this.sheet ? this.sheet.options : {},\n        media = _ref.media,\n        meta = _ref.meta,\n        element = _ref.element;\n\n    this.element = element || createStyle();\n    this.element.setAttribute('data-jss', '');\n    if (media) this.element.setAttribute('media', media);\n    if (meta) this.element.setAttribute('data-meta', meta);\n    var nonce = getNonce();\n    if (nonce) this.element.setAttribute('nonce', nonce);\n  }\n  /**\n   * Insert style element into render tree.\n   */\n\n\n  var _proto = DomRenderer.prototype;\n\n  _proto.attach = function attach() {\n    // In the case the element node is external and it is already in the DOM.\n    if (this.element.parentNode || !this.sheet) return;\n    insertStyle(this.element, this.sheet.options); // When rules are inserted using `insertRule` API, after `sheet.detach().attach()`\n    // most browsers create a new CSSStyleSheet, except of all IEs.\n\n    var deployed = Boolean(this.sheet && this.sheet.deployed);\n\n    if (this.hasInsertedRules && deployed) {\n      this.hasInsertedRules = false;\n      this.deploy();\n    }\n  }\n  /**\n   * Remove style element from render tree.\n   */\n  ;\n\n  _proto.detach = function detach() {\n    if (!this.sheet) return;\n    var parentNode = this.element.parentNode;\n    if (parentNode) parentNode.removeChild(this.element); // In the most browsers, rules inserted using insertRule() API will be lost when style element is removed.\n    // Though IE will keep them and we need a consistent behavior.\n\n    if (this.sheet.options.link) {\n      this.cssRules = [];\n      this.element.textContent = '\\n';\n    }\n  }\n  /**\n   * Inject CSS string into element.\n   */\n  ;\n\n  _proto.deploy = function deploy() {\n    var sheet = this.sheet;\n    if (!sheet) return;\n\n    if (sheet.options.link) {\n      this.insertRules(sheet.rules);\n      return;\n    }\n\n    this.element.textContent = \"\\n\" + sheet.toString() + \"\\n\";\n  }\n  /**\n   * Insert RuleList into an element.\n   */\n  ;\n\n  _proto.insertRules = function insertRules(rules, nativeParent) {\n    for (var i = 0; i < rules.index.length; i++) {\n      this.insertRule(rules.index[i], i, nativeParent);\n    }\n  }\n  /**\n   * Insert a rule into element.\n   */\n  ;\n\n  _proto.insertRule = function insertRule(rule, index, nativeParent) {\n    if (nativeParent === void 0) {\n      nativeParent = this.element.sheet;\n    }\n\n    if (rule.rules) {\n      var parent = rule;\n      var latestNativeParent = nativeParent;\n\n      if (rule.type === 'conditional' || rule.type === 'keyframes') {\n        var _insertionIndex = getValidRuleInsertionIndex(nativeParent, index); // We need to render the container without children first.\n\n\n        latestNativeParent = _insertRule(nativeParent, parent.toString({\n          children: false\n        }), _insertionIndex);\n\n        if (latestNativeParent === false) {\n          return false;\n        }\n\n        this.refCssRule(rule, _insertionIndex, latestNativeParent);\n      }\n\n      this.insertRules(parent.rules, latestNativeParent);\n      return latestNativeParent;\n    }\n\n    var ruleStr = rule.toString();\n    if (!ruleStr) return false;\n    var insertionIndex = getValidRuleInsertionIndex(nativeParent, index);\n\n    var nativeRule = _insertRule(nativeParent, ruleStr, insertionIndex);\n\n    if (nativeRule === false) {\n      return false;\n    }\n\n    this.hasInsertedRules = true;\n    this.refCssRule(rule, insertionIndex, nativeRule);\n    return nativeRule;\n  };\n\n  _proto.refCssRule = function refCssRule(rule, index, cssRule) {\n    rule.renderable = cssRule; // We only want to reference the top level rules, deleteRule API doesn't support removing nested rules\n    // like rules inside media queries or keyframes\n\n    if (rule.options.parent instanceof StyleSheet) {\n      this.cssRules[index] = cssRule;\n    }\n  }\n  /**\n   * Delete a rule.\n   */\n  ;\n\n  _proto.deleteRule = function deleteRule(cssRule) {\n    var sheet = this.element.sheet;\n    var index = this.indexOf(cssRule);\n    if (index === -1) return false;\n    sheet.deleteRule(index);\n    this.cssRules.splice(index, 1);\n    return true;\n  }\n  /**\n   * Get index of a CSS Rule.\n   */\n  ;\n\n  _proto.indexOf = function indexOf(cssRule) {\n    return this.cssRules.indexOf(cssRule);\n  }\n  /**\n   * Generate a new CSS rule and replace the existing one.\n   *\n   * Only used for some old browsers because they can't set a selector.\n   */\n  ;\n\n  _proto.replaceRule = function replaceRule(cssRule, rule) {\n    var index = this.indexOf(cssRule);\n    if (index === -1) return false;\n    this.element.sheet.deleteRule(index);\n    this.cssRules.splice(index, 1);\n    return this.insertRule(rule, index);\n  }\n  /**\n   * Get all rules elements.\n   */\n  ;\n\n  _proto.getRules = function getRules() {\n    return this.element.sheet.cssRules;\n  };\n\n  return DomRenderer;\n}();\n\nvar instanceCounter = 0;\n\nvar Jss =\n/*#__PURE__*/\nfunction () {\n  function Jss(options) {\n    this.id = instanceCounter++;\n    this.version = \"10.8.2\";\n    this.plugins = new PluginsRegistry();\n    this.options = {\n      id: {\n        minify: false\n      },\n      createGenerateId: createGenerateId,\n      Renderer: isInBrowser ? DomRenderer : null,\n      plugins: []\n    };\n    this.generateId = createGenerateId({\n      minify: false\n    });\n\n    for (var i = 0; i < plugins.length; i++) {\n      this.plugins.use(plugins[i], {\n        queue: 'internal'\n      });\n    }\n\n    this.setup(options);\n  }\n  /**\n   * Prepares various options, applies plugins.\n   * Should not be used twice on the same instance, because there is no plugins\n   * deduplication logic.\n   */\n\n\n  var _proto = Jss.prototype;\n\n  _proto.setup = function setup(options) {\n    if (options === void 0) {\n      options = {};\n    }\n\n    if (options.createGenerateId) {\n      this.options.createGenerateId = options.createGenerateId;\n    }\n\n    if (options.id) {\n      this.options.id = _extends({}, this.options.id, options.id);\n    }\n\n    if (options.createGenerateId || options.id) {\n      this.generateId = this.options.createGenerateId(this.options.id);\n    }\n\n    if (options.insertionPoint != null) this.options.insertionPoint = options.insertionPoint;\n\n    if ('Renderer' in options) {\n      this.options.Renderer = options.Renderer;\n    } // eslint-disable-next-line prefer-spread\n\n\n    if (options.plugins) this.use.apply(this, options.plugins);\n    return this;\n  }\n  /**\n   * Create a Style Sheet.\n   */\n  ;\n\n  _proto.createStyleSheet = function createStyleSheet(styles, options) {\n    if (options === void 0) {\n      options = {};\n    }\n\n    var _options = options,\n        index = _options.index;\n\n    if (typeof index !== 'number') {\n      index = sheets.index === 0 ? 0 : sheets.index + 1;\n    }\n\n    var sheet = new StyleSheet(styles, _extends({}, options, {\n      jss: this,\n      generateId: options.generateId || this.generateId,\n      insertionPoint: this.options.insertionPoint,\n      Renderer: this.options.Renderer,\n      index: index\n    }));\n    this.plugins.onProcessSheet(sheet);\n    return sheet;\n  }\n  /**\n   * Detach the Style Sheet and remove it from the registry.\n   */\n  ;\n\n  _proto.removeStyleSheet = function removeStyleSheet(sheet) {\n    sheet.detach();\n    sheets.remove(sheet);\n    return this;\n  }\n  /**\n   * Create a rule without a Style Sheet.\n   * [Deprecated] will be removed in the next major version.\n   */\n  ;\n\n  _proto.createRule = function createRule$1(name, style, options) {\n    if (style === void 0) {\n      style = {};\n    }\n\n    if (options === void 0) {\n      options = {};\n    }\n\n    // Enable rule without name for inline styles.\n    if (typeof name === 'object') {\n      return this.createRule(undefined, name, style);\n    }\n\n    var ruleOptions = _extends({}, options, {\n      name: name,\n      jss: this,\n      Renderer: this.options.Renderer\n    });\n\n    if (!ruleOptions.generateId) ruleOptions.generateId = this.generateId;\n    if (!ruleOptions.classes) ruleOptions.classes = {};\n    if (!ruleOptions.keyframes) ruleOptions.keyframes = {};\n\n    var rule = createRule(name, style, ruleOptions);\n\n    if (rule) this.plugins.onProcessRule(rule);\n    return rule;\n  }\n  /**\n   * Register plugin. Passed function will be invoked with a rule instance.\n   */\n  ;\n\n  _proto.use = function use() {\n    var _this = this;\n\n    for (var _len = arguments.length, plugins = new Array(_len), _key = 0; _key < _len; _key++) {\n      plugins[_key] = arguments[_key];\n    }\n\n    plugins.forEach(function (plugin) {\n      _this.plugins.use(plugin);\n    });\n    return this;\n  };\n\n  return Jss;\n}();\n\nvar createJss = function createJss(options) {\n  return new Jss(options);\n};\n\n/**\n * SheetsManager is like a WeakMap which is designed to count StyleSheet\n * instances and attach/detach automatically.\n * Used in react-jss.\n */\n\nvar SheetsManager =\n/*#__PURE__*/\nfunction () {\n  function SheetsManager() {\n    this.length = 0;\n    this.sheets = new WeakMap();\n  }\n\n  var _proto = SheetsManager.prototype;\n\n  _proto.get = function get(key) {\n    var entry = this.sheets.get(key);\n    return entry && entry.sheet;\n  };\n\n  _proto.add = function add(key, sheet) {\n    if (this.sheets.has(key)) return;\n    this.length++;\n    this.sheets.set(key, {\n      sheet: sheet,\n      refs: 0\n    });\n  };\n\n  _proto.manage = function manage(key) {\n    var entry = this.sheets.get(key);\n\n    if (entry) {\n      if (entry.refs === 0) {\n        entry.sheet.attach();\n      }\n\n      entry.refs++;\n      return entry.sheet;\n    }\n\n    warning(false, \"[JSS] SheetsManager: can't find sheet to manage\");\n    return undefined;\n  };\n\n  _proto.unmanage = function unmanage(key) {\n    var entry = this.sheets.get(key);\n\n    if (entry) {\n      if (entry.refs > 0) {\n        entry.refs--;\n        if (entry.refs === 0) entry.sheet.detach();\n      }\n    } else {\n      warning(false, \"SheetsManager: can't find sheet to unmanage\");\n    }\n  };\n\n  _createClass(SheetsManager, [{\n    key: \"size\",\n    get: function get() {\n      return this.length;\n    }\n  }]);\n\n  return SheetsManager;\n}();\n\n/**\n* Export a constant indicating if this browser has CSSTOM support.\n* https://developers.google.com/web/updates/2018/03/cssom\n*/\nvar hasCSSTOMSupport = typeof CSS === 'object' && CSS != null && 'number' in CSS;\n\n/**\n * Extracts a styles object with only props that contain function values.\n */\nfunction getDynamicStyles(styles) {\n  var to = null;\n\n  for (var key in styles) {\n    var value = styles[key];\n    var type = typeof value;\n\n    if (type === 'function') {\n      if (!to) to = {};\n      to[key] = value;\n    } else if (type === 'object' && value !== null && !Array.isArray(value)) {\n      var extracted = getDynamicStyles(value);\n\n      if (extracted) {\n        if (!to) to = {};\n        to[key] = extracted;\n      }\n    }\n  }\n\n  return to;\n}\n\n/**\n * A better abstraction over CSS.\n *\n * @copyright Oleg Isonen (Slobodskoi) / Isonen 2014-present\n * @website https://github.com/cssinjs/jss\n * @license MIT\n */\nvar index = createJss();\n\nexport default index;\nexport { RuleList, SheetsManager, SheetsRegistry, createJss as create, createGenerateId, createRule, getDynamicStyles, hasCSSTOMSupport, sheets, toCssValue };\n","// Used https://github.com/thinkloop/multi-key-cache as inspiration\nvar multiKeyStore = {\n  set: function set(cache, key1, key2, value) {\n    var subCache = cache.get(key1);\n\n    if (!subCache) {\n      subCache = new Map();\n      cache.set(key1, subCache);\n    }\n\n    subCache.set(key2, value);\n  },\n  get: function get(cache, key1, key2) {\n    var subCache = cache.get(key1);\n    return subCache ? subCache.get(key2) : undefined;\n  },\n  delete: function _delete(cache, key1, key2) {\n    var subCache = cache.get(key1);\n    subCache.delete(key2);\n  }\n};\nexport default multiKeyStore;","import nested from '../ThemeProvider/nested';\n/**\n * This is the list of the style rule name we use as drop in replacement for the built-in\n * pseudo classes (:checked, :disabled, :focused, etc.).\n *\n * Why do they exist in the first place?\n * These classes are used at a specificity of 2.\n * It allows them to override previously definied styles as well as\n * being untouched by simple user overrides.\n */\n\nvar pseudoClasses = ['checked', 'disabled', 'error', 'focused', 'focusVisible', 'required', 'expanded', 'selected']; // Returns a function which generates unique class names based on counters.\n// When new generator function is created, rule counter is reset.\n// We need to reset the rule counter for SSR for each request.\n//\n// It's inspired by\n// https://github.com/cssinjs/jss/blob/4e6a05dd3f7b6572fdd3ab216861d9e446c20331/src/utils/createGenerateClassName.js\n\nexport default function createGenerateClassName() {\n  var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n  var _options$disableGloba = options.disableGlobal,\n      disableGlobal = _options$disableGloba === void 0 ? false : _options$disableGloba,\n      _options$productionPr = options.productionPrefix,\n      productionPrefix = _options$productionPr === void 0 ? 'jss' : _options$productionPr,\n      _options$seed = options.seed,\n      seed = _options$seed === void 0 ? '' : _options$seed;\n  var seedPrefix = seed === '' ? '' : \"\".concat(seed, \"-\");\n  var ruleCounter = 0;\n\n  var getNextCounterId = function getNextCounterId() {\n    ruleCounter += 1;\n\n    if (process.env.NODE_ENV !== 'production') {\n      if (ruleCounter >= 1e10) {\n        console.warn(['Material-UI: You might have a memory leak.', 'The ruleCounter is not supposed to grow that much.'].join(''));\n      }\n    }\n\n    return ruleCounter;\n  };\n\n  return function (rule, styleSheet) {\n    var name = styleSheet.options.name; // Is a global static MUI style?\n\n    if (name && name.indexOf('Mui') === 0 && !styleSheet.options.link && !disableGlobal) {\n      // We can use a shorthand class name, we never use the keys to style the components.\n      if (pseudoClasses.indexOf(rule.key) !== -1) {\n        return \"Mui-\".concat(rule.key);\n      }\n\n      var prefix = \"\".concat(seedPrefix).concat(name, \"-\").concat(rule.key);\n\n      if (!styleSheet.options.theme[nested] || seed !== '') {\n        return prefix;\n      }\n\n      return \"\".concat(prefix, \"-\").concat(getNextCounterId());\n    }\n\n    if (process.env.NODE_ENV === 'production') {\n      return \"\".concat(seedPrefix).concat(productionPrefix).concat(getNextCounterId());\n    }\n\n    var suffix = \"\".concat(rule.key, \"-\").concat(getNextCounterId()); // Help with debuggability.\n\n    if (styleSheet.options.classNamePrefix) {\n      return \"\".concat(seedPrefix).concat(styleSheet.options.classNamePrefix, \"-\").concat(suffix);\n    }\n\n    return \"\".concat(seedPrefix).concat(suffix);\n  };\n}","import warning from 'tiny-warning';\nimport { createRule } from 'jss';\n\nvar now = Date.now();\nvar fnValuesNs = \"fnValues\" + now;\nvar fnRuleNs = \"fnStyle\" + ++now;\n\nvar functionPlugin = function functionPlugin() {\n  return {\n    onCreateRule: function onCreateRule(name, decl, options) {\n      if (typeof decl !== 'function') return null;\n      var rule = createRule(name, {}, options);\n      rule[fnRuleNs] = decl;\n      return rule;\n    },\n    onProcessStyle: function onProcessStyle(style, rule) {\n      // We need to extract function values from the declaration, so that we can keep core unaware of them.\n      // We need to do that only once.\n      // We don't need to extract functions on each style update, since this can happen only once.\n      // We don't support function values inside of function rules.\n      if (fnValuesNs in rule || fnRuleNs in rule) return style;\n      var fnValues = {};\n\n      for (var prop in style) {\n        var value = style[prop];\n        if (typeof value !== 'function') continue;\n        delete style[prop];\n        fnValues[prop] = value;\n      }\n\n      rule[fnValuesNs] = fnValues;\n      return style;\n    },\n    onUpdate: function onUpdate(data, rule, sheet, options) {\n      var styleRule = rule;\n      var fnRule = styleRule[fnRuleNs]; // If we have a style function, the entire rule is dynamic and style object\n      // will be returned from that function.\n\n      if (fnRule) {\n        // Empty object will remove all currently defined props\n        // in case function rule returns a falsy value.\n        styleRule.style = fnRule(data) || {};\n\n        if (process.env.NODE_ENV === 'development') {\n          for (var prop in styleRule.style) {\n            if (typeof styleRule.style[prop] === 'function') {\n              process.env.NODE_ENV !== \"production\" ? warning(false, '[JSS] Function values inside function rules are not supported.') : void 0;\n              break;\n            }\n          }\n        }\n      }\n\n      var fnValues = styleRule[fnValuesNs]; // If we have a fn values map, it is a rule with function values.\n\n      if (fnValues) {\n        for (var _prop in fnValues) {\n          styleRule.prop(_prop, fnValues[_prop](data), options);\n        }\n      }\n    }\n  };\n};\n\nexport default functionPlugin;\n","import _extends from '@babel/runtime/helpers/esm/extends';\nimport { RuleList } from 'jss';\n\nvar at = '@global';\nvar atPrefix = '@global ';\n\nvar GlobalContainerRule =\n/*#__PURE__*/\nfunction () {\n  function GlobalContainerRule(key, styles, options) {\n    this.type = 'global';\n    this.at = at;\n    this.isProcessed = false;\n    this.key = key;\n    this.options = options;\n    this.rules = new RuleList(_extends({}, options, {\n      parent: this\n    }));\n\n    for (var selector in styles) {\n      this.rules.add(selector, styles[selector]);\n    }\n\n    this.rules.process();\n  }\n  /**\n   * Get a rule.\n   */\n\n\n  var _proto = GlobalContainerRule.prototype;\n\n  _proto.getRule = function getRule(name) {\n    return this.rules.get(name);\n  }\n  /**\n   * Create and register rule, run plugins.\n   */\n  ;\n\n  _proto.addRule = function addRule(name, style, options) {\n    var rule = this.rules.add(name, style, options);\n    if (rule) this.options.jss.plugins.onProcessRule(rule);\n    return rule;\n  }\n  /**\n   * Get index of a rule.\n   */\n  ;\n\n  _proto.indexOf = function indexOf(rule) {\n    return this.rules.indexOf(rule);\n  }\n  /**\n   * Generates a CSS string.\n   */\n  ;\n\n  _proto.toString = function toString() {\n    return this.rules.toString();\n  };\n\n  return GlobalContainerRule;\n}();\n\nvar GlobalPrefixedRule =\n/*#__PURE__*/\nfunction () {\n  function GlobalPrefixedRule(key, style, options) {\n    this.type = 'global';\n    this.at = at;\n    this.isProcessed = false;\n    this.key = key;\n    this.options = options;\n    var selector = key.substr(atPrefix.length);\n    this.rule = options.jss.createRule(selector, style, _extends({}, options, {\n      parent: this\n    }));\n  }\n\n  var _proto2 = GlobalPrefixedRule.prototype;\n\n  _proto2.toString = function toString(options) {\n    return this.rule ? this.rule.toString(options) : '';\n  };\n\n  return GlobalPrefixedRule;\n}();\n\nvar separatorRegExp = /\\s*,\\s*/g;\n\nfunction addScope(selector, scope) {\n  var parts = selector.split(separatorRegExp);\n  var scoped = '';\n\n  for (var i = 0; i < parts.length; i++) {\n    scoped += scope + \" \" + parts[i].trim();\n    if (parts[i + 1]) scoped += ', ';\n  }\n\n  return scoped;\n}\n\nfunction handleNestedGlobalContainerRule(rule, sheet) {\n  var options = rule.options,\n      style = rule.style;\n  var rules = style ? style[at] : null;\n  if (!rules) return;\n\n  for (var name in rules) {\n    sheet.addRule(name, rules[name], _extends({}, options, {\n      selector: addScope(name, rule.selector)\n    }));\n  }\n\n  delete style[at];\n}\n\nfunction handlePrefixedGlobalRule(rule, sheet) {\n  var options = rule.options,\n      style = rule.style;\n\n  for (var prop in style) {\n    if (prop[0] !== '@' || prop.substr(0, at.length) !== at) continue;\n    var selector = addScope(prop.substr(at.length), rule.selector);\n    sheet.addRule(selector, style[prop], _extends({}, options, {\n      selector: selector\n    }));\n    delete style[prop];\n  }\n}\n/**\n * Convert nested rules to separate, remove them from original styles.\n */\n\n\nfunction jssGlobal() {\n  function onCreateRule(name, styles, options) {\n    if (!name) return null;\n\n    if (name === at) {\n      return new GlobalContainerRule(name, styles, options);\n    }\n\n    if (name[0] === '@' && name.substr(0, atPrefix.length) === atPrefix) {\n      return new GlobalPrefixedRule(name, styles, options);\n    }\n\n    var parent = options.parent;\n\n    if (parent) {\n      if (parent.type === 'global' || parent.options.parent && parent.options.parent.type === 'global') {\n        options.scoped = false;\n      }\n    }\n\n    if (options.scoped === false) {\n      options.selector = name;\n    }\n\n    return null;\n  }\n\n  function onProcessRule(rule, sheet) {\n    if (rule.type !== 'style' || !sheet) return;\n    handleNestedGlobalContainerRule(rule, sheet);\n    handlePrefixedGlobalRule(rule, sheet);\n  }\n\n  return {\n    onCreateRule: onCreateRule,\n    onProcessRule: onProcessRule\n  };\n}\n\nexport default jssGlobal;\n","import _extends from '@babel/runtime/helpers/esm/extends';\nimport warning from 'tiny-warning';\n\nvar separatorRegExp = /\\s*,\\s*/g;\nvar parentRegExp = /&/g;\nvar refRegExp = /\\$([\\w-]+)/g;\n/**\n * Convert nested rules to separate, remove them from original styles.\n */\n\nfunction jssNested() {\n  // Get a function to be used for $ref replacement.\n  function getReplaceRef(container, sheet) {\n    return function (match, key) {\n      var rule = container.getRule(key) || sheet && sheet.getRule(key);\n\n      if (rule) {\n        return rule.selector;\n      }\n\n      process.env.NODE_ENV !== \"production\" ? warning(false, \"[JSS] Could not find the referenced rule \\\"\" + key + \"\\\" in \\\"\" + (container.options.meta || container.toString()) + \"\\\".\") : void 0;\n      return key;\n    };\n  }\n\n  function replaceParentRefs(nestedProp, parentProp) {\n    var parentSelectors = parentProp.split(separatorRegExp);\n    var nestedSelectors = nestedProp.split(separatorRegExp);\n    var result = '';\n\n    for (var i = 0; i < parentSelectors.length; i++) {\n      var parent = parentSelectors[i];\n\n      for (var j = 0; j < nestedSelectors.length; j++) {\n        var nested = nestedSelectors[j];\n        if (result) result += ', '; // Replace all & by the parent or prefix & with the parent.\n\n        result += nested.indexOf('&') !== -1 ? nested.replace(parentRegExp, parent) : parent + \" \" + nested;\n      }\n    }\n\n    return result;\n  }\n\n  function getOptions(rule, container, prevOptions) {\n    // Options has been already created, now we only increase index.\n    if (prevOptions) return _extends({}, prevOptions, {\n      index: prevOptions.index + 1\n    });\n    var nestingLevel = rule.options.nestingLevel;\n    nestingLevel = nestingLevel === undefined ? 1 : nestingLevel + 1;\n\n    var options = _extends({}, rule.options, {\n      nestingLevel: nestingLevel,\n      index: container.indexOf(rule) + 1 // We don't need the parent name to be set options for chlid.\n\n    });\n\n    delete options.name;\n    return options;\n  }\n\n  function onProcessStyle(style, rule, sheet) {\n    if (rule.type !== 'style') return style;\n    var styleRule = rule;\n    var container = styleRule.options.parent;\n    var options;\n    var replaceRef;\n\n    for (var prop in style) {\n      var isNested = prop.indexOf('&') !== -1;\n      var isNestedConditional = prop[0] === '@';\n      if (!isNested && !isNestedConditional) continue;\n      options = getOptions(styleRule, container, options);\n\n      if (isNested) {\n        var selector = replaceParentRefs(prop, styleRule.selector); // Lazily create the ref replacer function just once for\n        // all nested rules within the sheet.\n\n        if (!replaceRef) replaceRef = getReplaceRef(container, sheet); // Replace all $refs.\n\n        selector = selector.replace(refRegExp, replaceRef);\n        container.addRule(selector, style[prop], _extends({}, options, {\n          selector: selector\n        }));\n      } else if (isNestedConditional) {\n        // Place conditional right after the parent rule to ensure right ordering.\n        container.addRule(prop, {}, options).addRule(styleRule.key, style[prop], {\n          selector: styleRule.selector\n        });\n      }\n\n      delete style[prop];\n    }\n\n    return style;\n  }\n\n  return {\n    onProcessStyle: onProcessStyle\n  };\n}\n\nexport default jssNested;\n","/* eslint-disable no-var, prefer-template */\nvar uppercasePattern = /[A-Z]/g\nvar msPattern = /^ms-/\nvar cache = {}\n\nfunction toHyphenLower(match) {\n  return '-' + match.toLowerCase()\n}\n\nfunction hyphenateStyleName(name) {\n  if (cache.hasOwnProperty(name)) {\n    return cache[name]\n  }\n\n  var hName = name.replace(uppercasePattern, toHyphenLower)\n  return (cache[name] = msPattern.test(hName) ? '-' + hName : hName)\n}\n\nexport default hyphenateStyleName\n","import hyphenate from 'hyphenate-style-name';\n\n/**\n * Convert camel cased property names to dash separated.\n */\n\nfunction convertCase(style) {\n  var converted = {};\n\n  for (var prop in style) {\n    var key = prop.indexOf('--') === 0 ? prop : hyphenate(prop);\n    converted[key] = style[prop];\n  }\n\n  if (style.fallbacks) {\n    if (Array.isArray(style.fallbacks)) converted.fallbacks = style.fallbacks.map(convertCase);else converted.fallbacks = convertCase(style.fallbacks);\n  }\n\n  return converted;\n}\n/**\n * Allow camel cased property names by converting them back to dasherized.\n */\n\n\nfunction camelCase() {\n  function onProcessStyle(style) {\n    if (Array.isArray(style)) {\n      // Handle rules like @font-face, which can have multiple styles in an array\n      for (var index = 0; index < style.length; index++) {\n        style[index] = convertCase(style[index]);\n      }\n\n      return style;\n    }\n\n    return convertCase(style);\n  }\n\n  function onChangeValue(value, prop, rule) {\n    if (prop.indexOf('--') === 0) {\n      return value;\n    }\n\n    var hyphenatedProp = hyphenate(prop); // There was no camel case in place\n\n    if (prop === hyphenatedProp) return value;\n    rule.prop(hyphenatedProp, value); // Core will ignore that property value we set the proper one above.\n\n    return null;\n  }\n\n  return {\n    onProcessStyle: onProcessStyle,\n    onChangeValue: onChangeValue\n  };\n}\n\nexport default camelCase;\n","import { hasCSSTOMSupport } from 'jss';\n\nvar px = hasCSSTOMSupport && CSS ? CSS.px : 'px';\nvar ms = hasCSSTOMSupport && CSS ? CSS.ms : 'ms';\nvar percent = hasCSSTOMSupport && CSS ? CSS.percent : '%';\n/**\n * Generated jss-plugin-default-unit CSS property units\n */\n\nvar defaultUnits = {\n  // Animation properties\n  'animation-delay': ms,\n  'animation-duration': ms,\n  // Background properties\n  'background-position': px,\n  'background-position-x': px,\n  'background-position-y': px,\n  'background-size': px,\n  // Border Properties\n  border: px,\n  'border-bottom': px,\n  'border-bottom-left-radius': px,\n  'border-bottom-right-radius': px,\n  'border-bottom-width': px,\n  'border-left': px,\n  'border-left-width': px,\n  'border-radius': px,\n  'border-right': px,\n  'border-right-width': px,\n  'border-top': px,\n  'border-top-left-radius': px,\n  'border-top-right-radius': px,\n  'border-top-width': px,\n  'border-width': px,\n  'border-block': px,\n  'border-block-end': px,\n  'border-block-end-width': px,\n  'border-block-start': px,\n  'border-block-start-width': px,\n  'border-block-width': px,\n  'border-inline': px,\n  'border-inline-end': px,\n  'border-inline-end-width': px,\n  'border-inline-start': px,\n  'border-inline-start-width': px,\n  'border-inline-width': px,\n  'border-start-start-radius': px,\n  'border-start-end-radius': px,\n  'border-end-start-radius': px,\n  'border-end-end-radius': px,\n  // Margin properties\n  margin: px,\n  'margin-bottom': px,\n  'margin-left': px,\n  'margin-right': px,\n  'margin-top': px,\n  'margin-block': px,\n  'margin-block-end': px,\n  'margin-block-start': px,\n  'margin-inline': px,\n  'margin-inline-end': px,\n  'margin-inline-start': px,\n  // Padding properties\n  padding: px,\n  'padding-bottom': px,\n  'padding-left': px,\n  'padding-right': px,\n  'padding-top': px,\n  'padding-block': px,\n  'padding-block-end': px,\n  'padding-block-start': px,\n  'padding-inline': px,\n  'padding-inline-end': px,\n  'padding-inline-start': px,\n  // Mask properties\n  'mask-position-x': px,\n  'mask-position-y': px,\n  'mask-size': px,\n  // Width and height properties\n  height: px,\n  width: px,\n  'min-height': px,\n  'max-height': px,\n  'min-width': px,\n  'max-width': px,\n  // Position properties\n  bottom: px,\n  left: px,\n  top: px,\n  right: px,\n  inset: px,\n  'inset-block': px,\n  'inset-block-end': px,\n  'inset-block-start': px,\n  'inset-inline': px,\n  'inset-inline-end': px,\n  'inset-inline-start': px,\n  // Shadow properties\n  'box-shadow': px,\n  'text-shadow': px,\n  // Column properties\n  'column-gap': px,\n  'column-rule': px,\n  'column-rule-width': px,\n  'column-width': px,\n  // Font and text properties\n  'font-size': px,\n  'font-size-delta': px,\n  'letter-spacing': px,\n  'text-decoration-thickness': px,\n  'text-indent': px,\n  'text-stroke': px,\n  'text-stroke-width': px,\n  'word-spacing': px,\n  // Motion properties\n  motion: px,\n  'motion-offset': px,\n  // Outline properties\n  outline: px,\n  'outline-offset': px,\n  'outline-width': px,\n  // Perspective properties\n  perspective: px,\n  'perspective-origin-x': percent,\n  'perspective-origin-y': percent,\n  // Transform properties\n  'transform-origin': percent,\n  'transform-origin-x': percent,\n  'transform-origin-y': percent,\n  'transform-origin-z': percent,\n  // Transition properties\n  'transition-delay': ms,\n  'transition-duration': ms,\n  // Alignment properties\n  'vertical-align': px,\n  'flex-basis': px,\n  // Some random properties\n  'shape-margin': px,\n  size: px,\n  gap: px,\n  // Grid properties\n  grid: px,\n  'grid-gap': px,\n  'row-gap': px,\n  'grid-row-gap': px,\n  'grid-column-gap': px,\n  'grid-template-rows': px,\n  'grid-template-columns': px,\n  'grid-auto-rows': px,\n  'grid-auto-columns': px,\n  // Not existing properties.\n  // Used to avoid issues with jss-plugin-expand integration.\n  'box-shadow-x': px,\n  'box-shadow-y': px,\n  'box-shadow-blur': px,\n  'box-shadow-spread': px,\n  'font-line-height': px,\n  'text-shadow-x': px,\n  'text-shadow-y': px,\n  'text-shadow-blur': px\n};\n\n/**\n * Clones the object and adds a camel cased property version.\n */\n\nfunction addCamelCasedVersion(obj) {\n  var regExp = /(-[a-z])/g;\n\n  var replace = function replace(str) {\n    return str[1].toUpperCase();\n  };\n\n  var newObj = {};\n\n  for (var key in obj) {\n    newObj[key] = obj[key];\n    newObj[key.replace(regExp, replace)] = obj[key];\n  }\n\n  return newObj;\n}\n\nvar units = addCamelCasedVersion(defaultUnits);\n/**\n * Recursive deep style passing function\n */\n\nfunction iterate(prop, value, options) {\n  if (value == null) return value;\n\n  if (Array.isArray(value)) {\n    for (var i = 0; i < value.length; i++) {\n      value[i] = iterate(prop, value[i], options);\n    }\n  } else if (typeof value === 'object') {\n    if (prop === 'fallbacks') {\n      for (var innerProp in value) {\n        value[innerProp] = iterate(innerProp, value[innerProp], options);\n      }\n    } else {\n      for (var _innerProp in value) {\n        value[_innerProp] = iterate(prop + \"-\" + _innerProp, value[_innerProp], options);\n      }\n    } // eslint-disable-next-line no-restricted-globals\n\n  } else if (typeof value === 'number' && isNaN(value) === false) {\n    var unit = options[prop] || units[prop]; // Add the unit if available, except for the special case of 0px.\n\n    if (unit && !(value === 0 && unit === px)) {\n      return typeof unit === 'function' ? unit(value).toString() : \"\" + value + unit;\n    }\n\n    return value.toString();\n  }\n\n  return value;\n}\n/**\n * Add unit to numeric values.\n */\n\n\nfunction defaultUnit(options) {\n  if (options === void 0) {\n    options = {};\n  }\n\n  var camelCasedOptions = addCamelCasedVersion(options);\n\n  function onProcessStyle(style, rule) {\n    if (rule.type !== 'style') return style;\n\n    for (var prop in style) {\n      style[prop] = iterate(prop, style[prop], camelCasedOptions);\n    }\n\n    return style;\n  }\n\n  function onChangeValue(value, prop) {\n    return iterate(prop, value, camelCasedOptions);\n  }\n\n  return {\n    onProcessStyle: onProcessStyle,\n    onChangeValue: onChangeValue\n  };\n}\n\nexport default defaultUnit;\n","import isInBrowser from 'is-in-browser';\nimport _toConsumableArray from '@babel/runtime/helpers/esm/toConsumableArray';\n\n// Export javascript style and css style vendor prefixes.\nvar js = '';\nvar css = '';\nvar vendor = '';\nvar browser = '';\nvar isTouch = isInBrowser && 'ontouchstart' in document.documentElement; // We should not do anything if required serverside.\n\nif (isInBrowser) {\n  // Order matters. We need to check Webkit the last one because\n  // other vendors use to add Webkit prefixes to some properties\n  var jsCssMap = {\n    Moz: '-moz-',\n    ms: '-ms-',\n    O: '-o-',\n    Webkit: '-webkit-'\n  };\n\n  var _document$createEleme = document.createElement('p'),\n      style = _document$createEleme.style;\n\n  var testProp = 'Transform';\n\n  for (var key in jsCssMap) {\n    if (key + testProp in style) {\n      js = key;\n      css = jsCssMap[key];\n      break;\n    }\n  } // Correctly detect the Edge browser.\n\n\n  if (js === 'Webkit' && 'msHyphens' in style) {\n    js = 'ms';\n    css = jsCssMap.ms;\n    browser = 'edge';\n  } // Correctly detect the Safari browser.\n\n\n  if (js === 'Webkit' && '-apple-trailing-word' in style) {\n    vendor = 'apple';\n  }\n}\n/**\n * Vendor prefix string for the current browser.\n *\n * @type {{js: String, css: String, vendor: String, browser: String}}\n * @api public\n */\n\n\nvar prefix = {\n  js: js,\n  css: css,\n  vendor: vendor,\n  browser: browser,\n  isTouch: isTouch\n};\n\n/**\n * Test if a keyframe at-rule should be prefixed or not\n *\n * @param {String} vendor prefix string for the current browser.\n * @return {String}\n * @api public\n */\n\nfunction supportedKeyframes(key) {\n  // Keyframes is already prefixed. e.g. key = '@-webkit-keyframes a'\n  if (key[1] === '-') return key; // No need to prefix IE/Edge. Older browsers will ignore unsupported rules.\n  // https://caniuse.com/#search=keyframes\n\n  if (prefix.js === 'ms') return key;\n  return \"@\" + prefix.css + \"keyframes\" + key.substr(10);\n}\n\n// https://caniuse.com/#search=appearance\n\nvar appearence = {\n  noPrefill: ['appearance'],\n  supportedProperty: function supportedProperty(prop) {\n    if (prop !== 'appearance') return false;\n    if (prefix.js === 'ms') return \"-webkit-\" + prop;\n    return prefix.css + prop;\n  }\n};\n\n// https://caniuse.com/#search=color-adjust\n\nvar colorAdjust = {\n  noPrefill: ['color-adjust'],\n  supportedProperty: function supportedProperty(prop) {\n    if (prop !== 'color-adjust') return false;\n    if (prefix.js === 'Webkit') return prefix.css + \"print-\" + prop;\n    return prop;\n  }\n};\n\nvar regExp = /[-\\s]+(.)?/g;\n/**\n * Replaces the letter with the capital letter\n *\n * @param {String} match\n * @param {String} c\n * @return {String}\n * @api private\n */\n\nfunction toUpper(match, c) {\n  return c ? c.toUpperCase() : '';\n}\n/**\n * Convert dash separated strings to camel-cased.\n *\n * @param {String} str\n * @return {String}\n * @api private\n */\n\n\nfunction camelize(str) {\n  return str.replace(regExp, toUpper);\n}\n\n/**\n * Convert dash separated strings to pascal cased.\n *\n * @param {String} str\n * @return {String}\n * @api private\n */\n\nfunction pascalize(str) {\n  return camelize(\"-\" + str);\n}\n\n// but we can use a longhand property instead.\n// https://caniuse.com/#search=mask\n\nvar mask = {\n  noPrefill: ['mask'],\n  supportedProperty: function supportedProperty(prop, style) {\n    if (!/^mask/.test(prop)) return false;\n\n    if (prefix.js === 'Webkit') {\n      var longhand = 'mask-image';\n\n      if (camelize(longhand) in style) {\n        return prop;\n      }\n\n      if (prefix.js + pascalize(longhand) in style) {\n        return prefix.css + prop;\n      }\n    }\n\n    return prop;\n  }\n};\n\n// https://caniuse.com/#search=text-orientation\n\nvar textOrientation = {\n  noPrefill: ['text-orientation'],\n  supportedProperty: function supportedProperty(prop) {\n    if (prop !== 'text-orientation') return false;\n\n    if (prefix.vendor === 'apple' && !prefix.isTouch) {\n      return prefix.css + prop;\n    }\n\n    return prop;\n  }\n};\n\n// https://caniuse.com/#search=transform\n\nvar transform = {\n  noPrefill: ['transform'],\n  supportedProperty: function supportedProperty(prop, style, options) {\n    if (prop !== 'transform') return false;\n\n    if (options.transform) {\n      return prop;\n    }\n\n    return prefix.css + prop;\n  }\n};\n\n// https://caniuse.com/#search=transition\n\nvar transition = {\n  noPrefill: ['transition'],\n  supportedProperty: function supportedProperty(prop, style, options) {\n    if (prop !== 'transition') return false;\n\n    if (options.transition) {\n      return prop;\n    }\n\n    return prefix.css + prop;\n  }\n};\n\n// https://caniuse.com/#search=writing-mode\n\nvar writingMode = {\n  noPrefill: ['writing-mode'],\n  supportedProperty: function supportedProperty(prop) {\n    if (prop !== 'writing-mode') return false;\n\n    if (prefix.js === 'Webkit' || prefix.js === 'ms' && prefix.browser !== 'edge') {\n      return prefix.css + prop;\n    }\n\n    return prop;\n  }\n};\n\n// https://caniuse.com/#search=user-select\n\nvar userSelect = {\n  noPrefill: ['user-select'],\n  supportedProperty: function supportedProperty(prop) {\n    if (prop !== 'user-select') return false;\n\n    if (prefix.js === 'Moz' || prefix.js === 'ms' || prefix.vendor === 'apple') {\n      return prefix.css + prop;\n    }\n\n    return prop;\n  }\n};\n\n// https://caniuse.com/#search=multicolumn\n// https://github.com/postcss/autoprefixer/issues/491\n// https://github.com/postcss/autoprefixer/issues/177\n\nvar breakPropsOld = {\n  supportedProperty: function supportedProperty(prop, style) {\n    if (!/^break-/.test(prop)) return false;\n\n    if (prefix.js === 'Webkit') {\n      var jsProp = \"WebkitColumn\" + pascalize(prop);\n      return jsProp in style ? prefix.css + \"column-\" + prop : false;\n    }\n\n    if (prefix.js === 'Moz') {\n      var _jsProp = \"page\" + pascalize(prop);\n\n      return _jsProp in style ? \"page-\" + prop : false;\n    }\n\n    return false;\n  }\n};\n\n// See https://github.com/postcss/autoprefixer/issues/324.\n\nvar inlineLogicalOld = {\n  supportedProperty: function supportedProperty(prop, style) {\n    if (!/^(border|margin|padding)-inline/.test(prop)) return false;\n    if (prefix.js === 'Moz') return prop;\n    var newProp = prop.replace('-inline', '');\n    return prefix.js + pascalize(newProp) in style ? prefix.css + newProp : false;\n  }\n};\n\n// Camelization is required because we can't test using.\n// CSS syntax for e.g. in FF.\n\nvar unprefixed = {\n  supportedProperty: function supportedProperty(prop, style) {\n    return camelize(prop) in style ? prop : false;\n  }\n};\n\nvar prefixed = {\n  supportedProperty: function supportedProperty(prop, style) {\n    var pascalized = pascalize(prop); // Return custom CSS variable without prefixing.\n\n    if (prop[0] === '-') return prop; // Return already prefixed value without prefixing.\n\n    if (prop[0] === '-' && prop[1] === '-') return prop;\n    if (prefix.js + pascalized in style) return prefix.css + prop; // Try webkit fallback.\n\n    if (prefix.js !== 'Webkit' && \"Webkit\" + pascalized in style) return \"-webkit-\" + prop;\n    return false;\n  }\n};\n\n// https://caniuse.com/#search=scroll-snap\n\nvar scrollSnap = {\n  supportedProperty: function supportedProperty(prop) {\n    if (prop.substring(0, 11) !== 'scroll-snap') return false;\n\n    if (prefix.js === 'ms') {\n      return \"\" + prefix.css + prop;\n    }\n\n    return prop;\n  }\n};\n\n// https://caniuse.com/#search=overscroll-behavior\n\nvar overscrollBehavior = {\n  supportedProperty: function supportedProperty(prop) {\n    if (prop !== 'overscroll-behavior') return false;\n\n    if (prefix.js === 'ms') {\n      return prefix.css + \"scroll-chaining\";\n    }\n\n    return prop;\n  }\n};\n\nvar propMap = {\n  'flex-grow': 'flex-positive',\n  'flex-shrink': 'flex-negative',\n  'flex-basis': 'flex-preferred-size',\n  'justify-content': 'flex-pack',\n  order: 'flex-order',\n  'align-items': 'flex-align',\n  'align-content': 'flex-line-pack' // 'align-self' is handled by 'align-self' plugin.\n\n}; // Support old flex spec from 2012.\n\nvar flex2012 = {\n  supportedProperty: function supportedProperty(prop, style) {\n    var newProp = propMap[prop];\n    if (!newProp) return false;\n    return prefix.js + pascalize(newProp) in style ? prefix.css + newProp : false;\n  }\n};\n\nvar propMap$1 = {\n  flex: 'box-flex',\n  'flex-grow': 'box-flex',\n  'flex-direction': ['box-orient', 'box-direction'],\n  order: 'box-ordinal-group',\n  'align-items': 'box-align',\n  'flex-flow': ['box-orient', 'box-direction'],\n  'justify-content': 'box-pack'\n};\nvar propKeys = Object.keys(propMap$1);\n\nvar prefixCss = function prefixCss(p) {\n  return prefix.css + p;\n}; // Support old flex spec from 2009.\n\n\nvar flex2009 = {\n  supportedProperty: function supportedProperty(prop, style, _ref) {\n    var multiple = _ref.multiple;\n\n    if (propKeys.indexOf(prop) > -1) {\n      var newProp = propMap$1[prop];\n\n      if (!Array.isArray(newProp)) {\n        return prefix.js + pascalize(newProp) in style ? prefix.css + newProp : false;\n      }\n\n      if (!multiple) return false;\n\n      for (var i = 0; i < newProp.length; i++) {\n        if (!(prefix.js + pascalize(newProp[0]) in style)) {\n          return false;\n        }\n      }\n\n      return newProp.map(prefixCss);\n    }\n\n    return false;\n  }\n};\n\n// plugins = [\n//   ...plugins,\n//    breakPropsOld,\n//    inlineLogicalOld,\n//    unprefixed,\n//    prefixed,\n//    scrollSnap,\n//    flex2012,\n//    flex2009\n// ]\n// Plugins without 'noPrefill' value, going last.\n// 'flex-*' plugins should be at the bottom.\n// 'flex2009' going after 'flex2012'.\n// 'prefixed' going after 'unprefixed'\n\nvar plugins = [appearence, colorAdjust, mask, textOrientation, transform, transition, writingMode, userSelect, breakPropsOld, inlineLogicalOld, unprefixed, prefixed, scrollSnap, overscrollBehavior, flex2012, flex2009];\nvar propertyDetectors = plugins.filter(function (p) {\n  return p.supportedProperty;\n}).map(function (p) {\n  return p.supportedProperty;\n});\nvar noPrefill = plugins.filter(function (p) {\n  return p.noPrefill;\n}).reduce(function (a, p) {\n  a.push.apply(a, _toConsumableArray(p.noPrefill));\n  return a;\n}, []);\n\nvar el;\nvar cache = {};\n\nif (isInBrowser) {\n  el = document.createElement('p'); // We test every property on vendor prefix requirement.\n  // Once tested, result is cached. It gives us up to 70% perf boost.\n  // http://jsperf.com/element-style-object-access-vs-plain-object\n  //\n  // Prefill cache with known css properties to reduce amount of\n  // properties we need to feature test at runtime.\n  // http://davidwalsh.name/vendor-prefix\n\n  var computed = window.getComputedStyle(document.documentElement, '');\n\n  for (var key$1 in computed) {\n    // eslint-disable-next-line no-restricted-globals\n    if (!isNaN(key$1)) cache[computed[key$1]] = computed[key$1];\n  } // Properties that cannot be correctly detected using the\n  // cache prefill method.\n\n\n  noPrefill.forEach(function (x) {\n    return delete cache[x];\n  });\n}\n/**\n * Test if a property is supported, returns supported property with vendor\n * prefix if required. Returns `false` if not supported.\n *\n * @param {String} prop dash separated\n * @param {Object} [options]\n * @return {String|Boolean}\n * @api public\n */\n\n\nfunction supportedProperty(prop, options) {\n  if (options === void 0) {\n    options = {};\n  }\n\n  // For server-side rendering.\n  if (!el) return prop; // Remove cache for benchmark tests or return property from the cache.\n\n  if (process.env.NODE_ENV !== 'benchmark' && cache[prop] != null) {\n    return cache[prop];\n  } // Check if 'transition' or 'transform' natively supported in browser.\n\n\n  if (prop === 'transition' || prop === 'transform') {\n    options[prop] = prop in el.style;\n  } // Find a plugin for current prefix property.\n\n\n  for (var i = 0; i < propertyDetectors.length; i++) {\n    cache[prop] = propertyDetectors[i](prop, el.style, options); // Break loop, if value found.\n\n    if (cache[prop]) break;\n  } // Reset styles for current property.\n  // Firefox can even throw an error for invalid properties, e.g., \"0\".\n\n\n  try {\n    el.style[prop] = '';\n  } catch (err) {\n    return false;\n  }\n\n  return cache[prop];\n}\n\nvar cache$1 = {};\nvar transitionProperties = {\n  transition: 1,\n  'transition-property': 1,\n  '-webkit-transition': 1,\n  '-webkit-transition-property': 1\n};\nvar transPropsRegExp = /(^\\s*[\\w-]+)|, (\\s*[\\w-]+)(?![^()]*\\))/g;\nvar el$1;\n/**\n * Returns prefixed value transition/transform if needed.\n *\n * @param {String} match\n * @param {String} p1\n * @param {String} p2\n * @return {String}\n * @api private\n */\n\nfunction prefixTransitionCallback(match, p1, p2) {\n  if (p1 === 'var') return 'var';\n  if (p1 === 'all') return 'all';\n  if (p2 === 'all') return ', all';\n  var prefixedValue = p1 ? supportedProperty(p1) : \", \" + supportedProperty(p2);\n  if (!prefixedValue) return p1 || p2;\n  return prefixedValue;\n}\n\nif (isInBrowser) el$1 = document.createElement('p');\n/**\n * Returns prefixed value if needed. Returns `false` if value is not supported.\n *\n * @param {String} property\n * @param {String} value\n * @return {String|Boolean}\n * @api public\n */\n\nfunction supportedValue(property, value) {\n  // For server-side rendering.\n  var prefixedValue = value;\n  if (!el$1 || property === 'content') return value; // It is a string or a number as a string like '1'.\n  // We want only prefixable values here.\n  // eslint-disable-next-line no-restricted-globals\n\n  if (typeof prefixedValue !== 'string' || !isNaN(parseInt(prefixedValue, 10))) {\n    return prefixedValue;\n  } // Create cache key for current value.\n\n\n  var cacheKey = property + prefixedValue; // Remove cache for benchmark tests or return value from cache.\n\n  if (process.env.NODE_ENV !== 'benchmark' && cache$1[cacheKey] != null) {\n    return cache$1[cacheKey];\n  } // IE can even throw an error in some cases, for e.g. style.content = 'bar'.\n\n\n  try {\n    // Test value as it is.\n    el$1.style[property] = prefixedValue;\n  } catch (err) {\n    // Return false if value not supported.\n    cache$1[cacheKey] = false;\n    return false;\n  } // If 'transition' or 'transition-property' property.\n\n\n  if (transitionProperties[property]) {\n    prefixedValue = prefixedValue.replace(transPropsRegExp, prefixTransitionCallback);\n  } else if (el$1.style[property] === '') {\n    // Value with a vendor prefix.\n    prefixedValue = prefix.css + prefixedValue; // Hardcode test to convert \"flex\" to \"-ms-flexbox\" for IE10.\n\n    if (prefixedValue === '-ms-flex') el$1.style[property] = '-ms-flexbox'; // Test prefixed value.\n\n    el$1.style[property] = prefixedValue; // Return false if value not supported.\n\n    if (el$1.style[property] === '') {\n      cache$1[cacheKey] = false;\n      return false;\n    }\n  } // Reset styles for current property.\n\n\n  el$1.style[property] = ''; // Write current value to cache.\n\n  cache$1[cacheKey] = prefixedValue;\n  return cache$1[cacheKey];\n}\n\nexport { prefix, supportedKeyframes, supportedProperty, supportedValue };\n","import { supportedKeyframes, supportedValue, supportedProperty } from 'css-vendor';\nimport { toCssValue } from 'jss';\n\n/**\n * Add vendor prefix to a property name when needed.\n */\n\nfunction jssVendorPrefixer() {\n  function onProcessRule(rule) {\n    if (rule.type === 'keyframes') {\n      var atRule = rule;\n      atRule.at = supportedKeyframes(atRule.at);\n    }\n  }\n\n  function prefixStyle(style) {\n    for (var prop in style) {\n      var value = style[prop];\n\n      if (prop === 'fallbacks' && Array.isArray(value)) {\n        style[prop] = value.map(prefixStyle);\n        continue;\n      }\n\n      var changeProp = false;\n      var supportedProp = supportedProperty(prop);\n      if (supportedProp && supportedProp !== prop) changeProp = true;\n      var changeValue = false;\n      var supportedValue$1 = supportedValue(supportedProp, toCssValue(value));\n      if (supportedValue$1 && supportedValue$1 !== value) changeValue = true;\n\n      if (changeProp || changeValue) {\n        if (changeProp) delete style[prop];\n        style[supportedProp || prop] = supportedValue$1 || value;\n      }\n    }\n\n    return style;\n  }\n\n  function onProcessStyle(style, rule) {\n    if (rule.type !== 'style') return style;\n    return prefixStyle(style);\n  }\n\n  function onChangeValue(value, prop) {\n    return supportedValue(prop, toCssValue(value)) || value;\n  }\n\n  return {\n    onProcessRule: onProcessRule,\n    onProcessStyle: onProcessStyle,\n    onChangeValue: onChangeValue\n  };\n}\n\nexport default jssVendorPrefixer;\n","/**\n * Sort props by length.\n */\nfunction jssPropsSort() {\n  var sort = function sort(prop0, prop1) {\n    if (prop0.length === prop1.length) {\n      return prop0 > prop1 ? 1 : -1;\n    }\n\n    return prop0.length - prop1.length;\n  };\n\n  return {\n    onProcessStyle: function onProcessStyle(style, rule) {\n      if (rule.type !== 'style') return style;\n      var newStyle = {};\n      var props = Object.keys(style).sort(sort);\n\n      for (var i = 0; i < props.length; i++) {\n        newStyle[props[i]] = style[props[i]];\n      }\n\n      return newStyle;\n    }\n  };\n}\n\nexport default jssPropsSort;\n","import functions from 'jss-plugin-rule-value-function';\nimport global from 'jss-plugin-global';\nimport nested from 'jss-plugin-nested';\nimport camelCase from 'jss-plugin-camel-case';\nimport defaultUnit from 'jss-plugin-default-unit';\nimport vendorPrefixer from 'jss-plugin-vendor-prefixer';\nimport propsSort from 'jss-plugin-props-sort'; // Subset of jss-preset-default with only the plugins the Material-UI components are using.\n\nexport default function jssPreset() {\n  return {\n    plugins: [functions(), global(), nested(), camelCase(), defaultUnit(), // Disable the vendor prefixer server-side, it does nothing.\n    // This way, we can get a performance boost.\n    // In the documentation, we are using `autoprefixer` to solve this problem.\n    typeof window === 'undefined' ? null : vendorPrefixer(), propsSort()]\n  };\n}","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport React from 'react';\nimport PropTypes from 'prop-types';\nimport { exactProp } from '@material-ui/utils';\nimport createGenerateClassName from '../createGenerateClassName';\nimport { create } from 'jss';\nimport jssPreset from '../jssPreset'; // Default JSS instance.\n\nvar jss = create(jssPreset()); // Use a singleton or the provided one by the context.\n//\n// The counter-based approach doesn't tolerate any mistake.\n// It's much safer to use the same counter everywhere.\n\nvar generateClassName = createGenerateClassName(); // Exported for test purposes\n\nexport var sheetsManager = new Map();\nvar defaultOptions = {\n  disableGeneration: false,\n  generateClassName: generateClassName,\n  jss: jss,\n  sheetsCache: null,\n  sheetsManager: sheetsManager,\n  sheetsRegistry: null\n};\nexport var StylesContext = React.createContext(defaultOptions);\n\nif (process.env.NODE_ENV !== 'production') {\n  StylesContext.displayName = 'StylesContext';\n}\n\nvar injectFirstNode;\nexport default function StylesProvider(props) {\n  var children = props.children,\n      _props$injectFirst = props.injectFirst,\n      injectFirst = _props$injectFirst === void 0 ? false : _props$injectFirst,\n      _props$disableGenerat = props.disableGeneration,\n      disableGeneration = _props$disableGenerat === void 0 ? false : _props$disableGenerat,\n      localOptions = _objectWithoutProperties(props, [\"children\", \"injectFirst\", \"disableGeneration\"]);\n\n  var outerOptions = React.useContext(StylesContext);\n\n  var context = _extends({}, outerOptions, {\n    disableGeneration: disableGeneration\n  }, localOptions);\n\n  if (process.env.NODE_ENV !== 'production') {\n    if (typeof window === 'undefined' && !context.sheetsManager) {\n      console.error('Material-UI: You need to use the ServerStyleSheets API when rendering on the server.');\n    }\n  }\n\n  if (process.env.NODE_ENV !== 'production') {\n    if (context.jss.options.insertionPoint && injectFirst) {\n      console.error('Material-UI: You cannot use a custom insertionPoint and <StylesContext injectFirst> at the same time.');\n    }\n  }\n\n  if (process.env.NODE_ENV !== 'production') {\n    if (injectFirst && localOptions.jss) {\n      console.error('Material-UI: You cannot use the jss and injectFirst props at the same time.');\n    }\n  }\n\n  if (!context.jss.options.insertionPoint && injectFirst && typeof window !== 'undefined') {\n    if (!injectFirstNode) {\n      var head = document.head;\n      injectFirstNode = document.createComment('mui-inject-first');\n      head.insertBefore(injectFirstNode, head.firstChild);\n    }\n\n    context.jss = create({\n      plugins: jssPreset().plugins,\n      insertionPoint: injectFirstNode\n    });\n  }\n\n  return /*#__PURE__*/React.createElement(StylesContext.Provider, {\n    value: context\n  }, children);\n}\nprocess.env.NODE_ENV !== \"production\" ? StylesProvider.propTypes = {\n  /**\n   * Your component tree.\n   */\n  children: PropTypes.node.isRequired,\n\n  /**\n   * You can disable the generation of the styles with this option.\n   * It can be useful when traversing the React tree outside of the HTML\n   * rendering step on the server.\n   * Let's say you are using react-apollo to extract all\n   * the queries made by the interface server-side - you can significantly speed up the traversal with this prop.\n   */\n  disableGeneration: PropTypes.bool,\n\n  /**\n   * JSS's class name generator.\n   */\n  generateClassName: PropTypes.func,\n\n  /**\n   * By default, the styles are injected last in the <head> element of the page.\n   * As a result, they gain more specificity than any other style sheet.\n   * If you want to override Material-UI's styles, set this prop.\n   */\n  injectFirst: PropTypes.bool,\n\n  /**\n   * JSS's instance.\n   */\n  jss: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  serverGenerateClassName: PropTypes.func,\n\n  /**\n   * @ignore\n   *\n   * Beta feature.\n   *\n   * Cache for the sheets.\n   */\n  sheetsCache: PropTypes.object,\n\n  /**\n   * @ignore\n   *\n   * The sheetsManager is used to deduplicate style sheet injection in the page.\n   * It's deduplicating using the (theme, styles) couple.\n   * On the server, you should provide a new instance for each request.\n   */\n  sheetsManager: PropTypes.object,\n\n  /**\n   * @ignore\n   *\n   * Collect the sheets.\n   */\n  sheetsRegistry: PropTypes.object\n} : void 0;\n\nif (process.env.NODE_ENV !== 'production') {\n  process.env.NODE_ENV !== \"production\" ? StylesProvider.propTypes = exactProp(StylesProvider.propTypes) : void 0;\n}","/* eslint-disable import/prefer-default-export */\n// Global index counter to preserve source order.\n// We create the style sheet during the creation of the component,\n// children are handled after the parents, so the order of style elements would be parent->child.\n// It is a problem though when a parent passes a className\n// which needs to override any child's styles.\n// StyleSheet of the child has a higher specificity, because of the source order.\n// So our solution is to render sheets them in the reverse order child->sheet, so\n// that parent has a higher specificity.\nvar indexCounter = -1e9;\nexport function increment() {\n  indexCounter += 1;\n\n  if (process.env.NODE_ENV !== 'production') {\n    if (indexCounter >= 0) {\n      console.warn(['Material-UI: You might have a memory leak.', 'The indexCounter is not supposed to grow that much.'].join('\\n'));\n    }\n  }\n\n  return indexCounter;\n}","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _typeof from \"@babel/runtime/helpers/esm/typeof\";\nimport { deepmerge } from '@material-ui/utils';\nimport noopTheme from './noopTheme';\nexport default function getStylesCreator(stylesOrCreator) {\n  var themingEnabled = typeof stylesOrCreator === 'function';\n\n  if (process.env.NODE_ENV !== 'production') {\n    if (_typeof(stylesOrCreator) !== 'object' && !themingEnabled) {\n      console.error(['Material-UI: The `styles` argument provided is invalid.', 'You need to provide a function generating the styles or a styles object.'].join('\\n'));\n    }\n  }\n\n  return {\n    create: function create(theme, name) {\n      var styles;\n\n      try {\n        styles = themingEnabled ? stylesOrCreator(theme) : stylesOrCreator;\n      } catch (err) {\n        if (process.env.NODE_ENV !== 'production') {\n          if (themingEnabled === true && theme === noopTheme) {\n            // TODO: prepend error message/name instead\n            console.error(['Material-UI: The `styles` argument provided is invalid.', 'You are providing a function without a theme in the context.', 'One of the parent elements needs to use a ThemeProvider.'].join('\\n'));\n          }\n        }\n\n        throw err;\n      }\n\n      if (!name || !theme.overrides || !theme.overrides[name]) {\n        return styles;\n      }\n\n      var overrides = theme.overrides[name];\n\n      var stylesWithOverrides = _extends({}, styles);\n\n      Object.keys(overrides).forEach(function (key) {\n        if (process.env.NODE_ENV !== 'production') {\n          if (!stylesWithOverrides[key]) {\n            console.warn(['Material-UI: You are trying to override a style that does not exist.', \"Fix the `\".concat(key, \"` key of `theme.overrides.\").concat(name, \"`.\")].join('\\n'));\n          }\n        }\n\n        stylesWithOverrides[key] = deepmerge(stylesWithOverrides[key], overrides[key]);\n      });\n      return stylesWithOverrides;\n    },\n    options: {}\n  };\n}","// We use the same empty object to ref count the styles that don't need a theme object.\nvar noopTheme = {};\nexport default noopTheme;","import _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport _extends from \"@babel/runtime/helpers/esm/extends\";\nimport React from 'react';\nimport { getDynamicStyles } from 'jss';\nimport mergeClasses from '../mergeClasses';\nimport multiKeyStore from './multiKeyStore';\nimport useTheme from '../useTheme';\nimport { StylesContext } from '../StylesProvider';\nimport { increment } from './indexCounter';\nimport getStylesCreator from '../getStylesCreator';\nimport noopTheme from '../getStylesCreator/noopTheme';\n\nfunction getClasses(_ref, classes, Component) {\n  var state = _ref.state,\n      stylesOptions = _ref.stylesOptions;\n\n  if (stylesOptions.disableGeneration) {\n    return classes || {};\n  }\n\n  if (!state.cacheClasses) {\n    state.cacheClasses = {\n      // Cache for the finalized classes value.\n      value: null,\n      // Cache for the last used classes prop pointer.\n      lastProp: null,\n      // Cache for the last used rendered classes pointer.\n      lastJSS: {}\n    };\n  } // Tracks if either the rendered classes or classes prop has changed,\n  // requiring the generation of a new finalized classes object.\n\n\n  var generate = false;\n\n  if (state.classes !== state.cacheClasses.lastJSS) {\n    state.cacheClasses.lastJSS = state.classes;\n    generate = true;\n  }\n\n  if (classes !== state.cacheClasses.lastProp) {\n    state.cacheClasses.lastProp = classes;\n    generate = true;\n  }\n\n  if (generate) {\n    state.cacheClasses.value = mergeClasses({\n      baseClasses: state.cacheClasses.lastJSS,\n      newClasses: classes,\n      Component: Component\n    });\n  }\n\n  return state.cacheClasses.value;\n}\n\nfunction attach(_ref2, props) {\n  var state = _ref2.state,\n      theme = _ref2.theme,\n      stylesOptions = _ref2.stylesOptions,\n      stylesCreator = _ref2.stylesCreator,\n      name = _ref2.name;\n\n  if (stylesOptions.disableGeneration) {\n    return;\n  }\n\n  var sheetManager = multiKeyStore.get(stylesOptions.sheetsManager, stylesCreator, theme);\n\n  if (!sheetManager) {\n    sheetManager = {\n      refs: 0,\n      staticSheet: null,\n      dynamicStyles: null\n    };\n    multiKeyStore.set(stylesOptions.sheetsManager, stylesCreator, theme, sheetManager);\n  }\n\n  var options = _extends({}, stylesCreator.options, stylesOptions, {\n    theme: theme,\n    flip: typeof stylesOptions.flip === 'boolean' ? stylesOptions.flip : theme.direction === 'rtl'\n  });\n\n  options.generateId = options.serverGenerateClassName || options.generateClassName;\n  var sheetsRegistry = stylesOptions.sheetsRegistry;\n\n  if (sheetManager.refs === 0) {\n    var staticSheet;\n\n    if (stylesOptions.sheetsCache) {\n      staticSheet = multiKeyStore.get(stylesOptions.sheetsCache, stylesCreator, theme);\n    }\n\n    var styles = stylesCreator.create(theme, name);\n\n    if (!staticSheet) {\n      staticSheet = stylesOptions.jss.createStyleSheet(styles, _extends({\n        link: false\n      }, options));\n      staticSheet.attach();\n\n      if (stylesOptions.sheetsCache) {\n        multiKeyStore.set(stylesOptions.sheetsCache, stylesCreator, theme, staticSheet);\n      }\n    }\n\n    if (sheetsRegistry) {\n      sheetsRegistry.add(staticSheet);\n    }\n\n    sheetManager.staticSheet = staticSheet;\n    sheetManager.dynamicStyles = getDynamicStyles(styles);\n  }\n\n  if (sheetManager.dynamicStyles) {\n    var dynamicSheet = stylesOptions.jss.createStyleSheet(sheetManager.dynamicStyles, _extends({\n      link: true\n    }, options));\n    dynamicSheet.update(props);\n    dynamicSheet.attach();\n    state.dynamicSheet = dynamicSheet;\n    state.classes = mergeClasses({\n      baseClasses: sheetManager.staticSheet.classes,\n      newClasses: dynamicSheet.classes\n    });\n\n    if (sheetsRegistry) {\n      sheetsRegistry.add(dynamicSheet);\n    }\n  } else {\n    state.classes = sheetManager.staticSheet.classes;\n  }\n\n  sheetManager.refs += 1;\n}\n\nfunction update(_ref3, props) {\n  var state = _ref3.state;\n\n  if (state.dynamicSheet) {\n    state.dynamicSheet.update(props);\n  }\n}\n\nfunction detach(_ref4) {\n  var state = _ref4.state,\n      theme = _ref4.theme,\n      stylesOptions = _ref4.stylesOptions,\n      stylesCreator = _ref4.stylesCreator;\n\n  if (stylesOptions.disableGeneration) {\n    return;\n  }\n\n  var sheetManager = multiKeyStore.get(stylesOptions.sheetsManager, stylesCreator, theme);\n  sheetManager.refs -= 1;\n  var sheetsRegistry = stylesOptions.sheetsRegistry;\n\n  if (sheetManager.refs === 0) {\n    multiKeyStore.delete(stylesOptions.sheetsManager, stylesCreator, theme);\n    stylesOptions.jss.removeStyleSheet(sheetManager.staticSheet);\n\n    if (sheetsRegistry) {\n      sheetsRegistry.remove(sheetManager.staticSheet);\n    }\n  }\n\n  if (state.dynamicSheet) {\n    stylesOptions.jss.removeStyleSheet(state.dynamicSheet);\n\n    if (sheetsRegistry) {\n      sheetsRegistry.remove(state.dynamicSheet);\n    }\n  }\n}\n\nfunction useSynchronousEffect(func, values) {\n  var key = React.useRef([]);\n  var output; // Store \"generation\" key. Just returns a new object every time\n\n  var currentKey = React.useMemo(function () {\n    return {};\n  }, values); // eslint-disable-line react-hooks/exhaustive-deps\n  // \"the first render\", or \"memo dropped the value\"\n\n  if (key.current !== currentKey) {\n    key.current = currentKey;\n    output = func();\n  }\n\n  React.useEffect(function () {\n    return function () {\n      if (output) {\n        output();\n      }\n    };\n  }, [currentKey] // eslint-disable-line react-hooks/exhaustive-deps\n  );\n}\n\nexport default function makeStyles(stylesOrCreator) {\n  var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n  var name = options.name,\n      classNamePrefixOption = options.classNamePrefix,\n      Component = options.Component,\n      _options$defaultTheme = options.defaultTheme,\n      defaultTheme = _options$defaultTheme === void 0 ? noopTheme : _options$defaultTheme,\n      stylesOptions2 = _objectWithoutProperties(options, [\"name\", \"classNamePrefix\", \"Component\", \"defaultTheme\"]);\n\n  var stylesCreator = getStylesCreator(stylesOrCreator);\n  var classNamePrefix = name || classNamePrefixOption || 'makeStyles';\n  stylesCreator.options = {\n    index: increment(),\n    name: name,\n    meta: classNamePrefix,\n    classNamePrefix: classNamePrefix\n  };\n\n  var useStyles = function useStyles() {\n    var props = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n    var theme = useTheme() || defaultTheme;\n\n    var stylesOptions = _extends({}, React.useContext(StylesContext), stylesOptions2);\n\n    var instance = React.useRef();\n    var shouldUpdate = React.useRef();\n    useSynchronousEffect(function () {\n      var current = {\n        name: name,\n        state: {},\n        stylesCreator: stylesCreator,\n        stylesOptions: stylesOptions,\n        theme: theme\n      };\n      attach(current, props);\n      shouldUpdate.current = false;\n      instance.current = current;\n      return function () {\n        detach(current);\n      };\n    }, [theme, stylesCreator]);\n    React.useEffect(function () {\n      if (shouldUpdate.current) {\n        update(instance.current, props);\n      }\n\n      shouldUpdate.current = true;\n    });\n    var classes = getClasses(instance.current, props.classes, Component);\n\n    if (process.env.NODE_ENV !== 'production') {\n      // eslint-disable-next-line react-hooks/rules-of-hooks\n      React.useDebugValue(classes);\n    }\n\n    return classes;\n  };\n\n  return useStyles;\n}","import { Children, cloneElement, isValidElement } from 'react';\n/**\n * Given `this.props.children`, return an object mapping key to child.\n *\n * @param {*} children `this.props.children`\n * @return {object} Mapping of key to child\n */\n\nexport function getChildMapping(children, mapFn) {\n  var mapper = function mapper(child) {\n    return mapFn && isValidElement(child) ? mapFn(child) : child;\n  };\n\n  var result = Object.create(null);\n  if (children) Children.map(children, function (c) {\n    return c;\n  }).forEach(function (child) {\n    // run the map function here instead so that the key is the computed one\n    result[child.key] = mapper(child);\n  });\n  return result;\n}\n/**\n * When you're adding or removing children some may be added or removed in the\n * same render pass. We want to show *both* since we want to simultaneously\n * animate elements in and out. This function takes a previous set of keys\n * and a new set of keys and merges them with its best guess of the correct\n * ordering. In the future we may expose some of the utilities in\n * ReactMultiChild to make this easy, but for now React itself does not\n * directly have this concept of the union of prevChildren and nextChildren\n * so we implement it here.\n *\n * @param {object} prev prev children as returned from\n * `ReactTransitionChildMapping.getChildMapping()`.\n * @param {object} next next children as returned from\n * `ReactTransitionChildMapping.getChildMapping()`.\n * @return {object} a key set that contains all keys in `prev` and all keys\n * in `next` in a reasonable order.\n */\n\nexport function mergeChildMappings(prev, next) {\n  prev = prev || {};\n  next = next || {};\n\n  function getValueForKey(key) {\n    return key in next ? next[key] : prev[key];\n  } // For each key of `next`, the list of keys to insert before that key in\n  // the combined list\n\n\n  var nextKeysPending = Object.create(null);\n  var pendingKeys = [];\n\n  for (var prevKey in prev) {\n    if (prevKey in next) {\n      if (pendingKeys.length) {\n        nextKeysPending[prevKey] = pendingKeys;\n        pendingKeys = [];\n      }\n    } else {\n      pendingKeys.push(prevKey);\n    }\n  }\n\n  var i;\n  var childMapping = {};\n\n  for (var nextKey in next) {\n    if (nextKeysPending[nextKey]) {\n      for (i = 0; i < nextKeysPending[nextKey].length; i++) {\n        var pendingNextKey = nextKeysPending[nextKey][i];\n        childMapping[nextKeysPending[nextKey][i]] = getValueForKey(pendingNextKey);\n      }\n    }\n\n    childMapping[nextKey] = getValueForKey(nextKey);\n  } // Finally, add the keys which didn't appear before any key in `next`\n\n\n  for (i = 0; i < pendingKeys.length; i++) {\n    childMapping[pendingKeys[i]] = getValueForKey(pendingKeys[i]);\n  }\n\n  return childMapping;\n}\n\nfunction getProp(child, prop, props) {\n  return props[prop] != null ? props[prop] : child.props[prop];\n}\n\nexport function getInitialChildMapping(props, onExited) {\n  return getChildMapping(props.children, function (child) {\n    return cloneElement(child, {\n      onExited: onExited.bind(null, child),\n      in: true,\n      appear: getProp(child, 'appear', props),\n      enter: getProp(child, 'enter', props),\n      exit: getProp(child, 'exit', props)\n    });\n  });\n}\nexport function getNextChildMapping(nextProps, prevChildMapping, onExited) {\n  var nextChildMapping = getChildMapping(nextProps.children);\n  var children = mergeChildMappings(prevChildMapping, nextChildMapping);\n  Object.keys(children).forEach(function (key) {\n    var child = children[key];\n    if (!isValidElement(child)) return;\n    var hasPrev = (key in prevChildMapping);\n    var hasNext = (key in nextChildMapping);\n    var prevChild = prevChildMapping[key];\n    var isLeaving = isValidElement(prevChild) && !prevChild.props.in; // item is new (entering)\n\n    if (hasNext && (!hasPrev || isLeaving)) {\n      // console.log('entering', key)\n      children[key] = cloneElement(child, {\n        onExited: onExited.bind(null, child),\n        in: true,\n        exit: getProp(child, 'exit', nextProps),\n        enter: getProp(child, 'enter', nextProps)\n      });\n    } else if (!hasNext && hasPrev && !isLeaving) {\n      // item is old (exiting)\n      // console.log('leaving', key)\n      children[key] = cloneElement(child, {\n        in: false\n      });\n    } else if (hasNext && hasPrev && isValidElement(prevChild)) {\n      // item hasn't changed transition states\n      // copy over the last transition props;\n      // console.log('unchanged', key)\n      children[key] = cloneElement(child, {\n        onExited: onExited.bind(null, child),\n        in: prevChild.props.in,\n        exit: getProp(child, 'exit', nextProps),\n        enter: getProp(child, 'enter', nextProps)\n      });\n    }\n  });\n  return children;\n}","import _objectWithoutPropertiesLoose from \"@babel/runtime/helpers/esm/objectWithoutPropertiesLoose\";\nimport _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _assertThisInitialized from \"@babel/runtime/helpers/esm/assertThisInitialized\";\nimport _inheritsLoose from \"@babel/runtime/helpers/esm/inheritsLoose\";\nimport PropTypes from 'prop-types';\nimport React from 'react';\nimport TransitionGroupContext from './TransitionGroupContext';\nimport { getChildMapping, getInitialChildMapping, getNextChildMapping } from './utils/ChildMapping';\n\nvar values = Object.values || function (obj) {\n  return Object.keys(obj).map(function (k) {\n    return obj[k];\n  });\n};\n\nvar defaultProps = {\n  component: 'div',\n  childFactory: function childFactory(child) {\n    return child;\n  }\n};\n/**\n * The `<TransitionGroup>` component manages a set of transition components\n * (`<Transition>` and `<CSSTransition>`) in a list. Like with the transition\n * components, `<TransitionGroup>` is a state machine for managing the mounting\n * and unmounting of components over time.\n *\n * Consider the example below. As items are removed or added to the TodoList the\n * `in` prop is toggled automatically by the `<TransitionGroup>`.\n *\n * Note that `<TransitionGroup>`  does not define any animation behavior!\n * Exactly _how_ a list item animates is up to the individual transition\n * component. This means you can mix and match animations across different list\n * items.\n */\n\nvar TransitionGroup = /*#__PURE__*/function (_React$Component) {\n  _inheritsLoose(TransitionGroup, _React$Component);\n\n  function TransitionGroup(props, context) {\n    var _this;\n\n    _this = _React$Component.call(this, props, context) || this;\n\n    var handleExited = _this.handleExited.bind(_assertThisInitialized(_this)); // Initial children should all be entering, dependent on appear\n\n\n    _this.state = {\n      contextValue: {\n        isMounting: true\n      },\n      handleExited: handleExited,\n      firstRender: true\n    };\n    return _this;\n  }\n\n  var _proto = TransitionGroup.prototype;\n\n  _proto.componentDidMount = function componentDidMount() {\n    this.mounted = true;\n    this.setState({\n      contextValue: {\n        isMounting: false\n      }\n    });\n  };\n\n  _proto.componentWillUnmount = function componentWillUnmount() {\n    this.mounted = false;\n  };\n\n  TransitionGroup.getDerivedStateFromProps = function getDerivedStateFromProps(nextProps, _ref) {\n    var prevChildMapping = _ref.children,\n        handleExited = _ref.handleExited,\n        firstRender = _ref.firstRender;\n    return {\n      children: firstRender ? getInitialChildMapping(nextProps, handleExited) : getNextChildMapping(nextProps, prevChildMapping, handleExited),\n      firstRender: false\n    };\n  } // node is `undefined` when user provided `nodeRef` prop\n  ;\n\n  _proto.handleExited = function handleExited(child, node) {\n    var currentChildMapping = getChildMapping(this.props.children);\n    if (child.key in currentChildMapping) return;\n\n    if (child.props.onExited) {\n      child.props.onExited(node);\n    }\n\n    if (this.mounted) {\n      this.setState(function (state) {\n        var children = _extends({}, state.children);\n\n        delete children[child.key];\n        return {\n          children: children\n        };\n      });\n    }\n  };\n\n  _proto.render = function render() {\n    var _this$props = this.props,\n        Component = _this$props.component,\n        childFactory = _this$props.childFactory,\n        props = _objectWithoutPropertiesLoose(_this$props, [\"component\", \"childFactory\"]);\n\n    var contextValue = this.state.contextValue;\n    var children = values(this.state.children).map(childFactory);\n    delete props.appear;\n    delete props.enter;\n    delete props.exit;\n\n    if (Component === null) {\n      return /*#__PURE__*/React.createElement(TransitionGroupContext.Provider, {\n        value: contextValue\n      }, children);\n    }\n\n    return /*#__PURE__*/React.createElement(TransitionGroupContext.Provider, {\n      value: contextValue\n    }, /*#__PURE__*/React.createElement(Component, props, children));\n  };\n\n  return TransitionGroup;\n}(React.Component);\n\nTransitionGroup.propTypes = process.env.NODE_ENV !== \"production\" ? {\n  /**\n   * `<TransitionGroup>` renders a `<div>` by default. You can change this\n   * behavior by providing a `component` prop.\n   * If you use React v16+ and would like to avoid a wrapping `<div>` element\n   * you can pass in `component={null}`. This is useful if the wrapping div\n   * borks your css styles.\n   */\n  component: PropTypes.any,\n\n  /**\n   * A set of `<Transition>` components, that are toggled `in` and out as they\n   * leave. the `<TransitionGroup>` will inject specific transition props, so\n   * remember to spread them through if you are wrapping the `<Transition>` as\n   * with our `<Fade>` example.\n   *\n   * While this component is meant for multiple `Transition` or `CSSTransition`\n   * children, sometimes you may want to have a single transition child with\n   * content that you want to be transitioned out and in when you change it\n   * (e.g. routes, images etc.) In that case you can change the `key` prop of\n   * the transition child as you change its content, this will cause\n   * `TransitionGroup` to transition the child out and back in.\n   */\n  children: PropTypes.node,\n\n  /**\n   * A convenience prop that enables or disables appear animations\n   * for all children. Note that specifying this will override any defaults set\n   * on individual children Transitions.\n   */\n  appear: PropTypes.bool,\n\n  /**\n   * A convenience prop that enables or disables enter animations\n   * for all children. Note that specifying this will override any defaults set\n   * on individual children Transitions.\n   */\n  enter: PropTypes.bool,\n\n  /**\n   * A convenience prop that enables or disables exit animations\n   * for all children. Note that specifying this will override any defaults set\n   * on individual children Transitions.\n   */\n  exit: PropTypes.bool,\n\n  /**\n   * You may need to apply reactive updates to a child as it is exiting.\n   * This is generally done by using `cloneElement` however in the case of an exiting\n   * child the element has already been removed and not accessible to the consumer.\n   *\n   * If you do need to update a child as it leaves you can provide a `childFactory`\n   * to wrap every child, even the ones that are leaving.\n   *\n   * @type Function(child: ReactElement) -> ReactElement\n   */\n  childFactory: PropTypes.func\n} : {};\nTransitionGroup.defaultProps = defaultProps;\nexport default TransitionGroup;","import * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport useEventCallback from '../utils/useEventCallback';\nvar useEnhancedEffect = typeof window === 'undefined' ? React.useEffect : React.useLayoutEffect;\n/**\n * @ignore - internal component.\n */\n\nfunction Ripple(props) {\n  var classes = props.classes,\n      _props$pulsate = props.pulsate,\n      pulsate = _props$pulsate === void 0 ? false : _props$pulsate,\n      rippleX = props.rippleX,\n      rippleY = props.rippleY,\n      rippleSize = props.rippleSize,\n      inProp = props.in,\n      _props$onExited = props.onExited,\n      onExited = _props$onExited === void 0 ? function () {} : _props$onExited,\n      timeout = props.timeout;\n\n  var _React$useState = React.useState(false),\n      leaving = _React$useState[0],\n      setLeaving = _React$useState[1];\n\n  var rippleClassName = clsx(classes.ripple, classes.rippleVisible, pulsate && classes.ripplePulsate);\n  var rippleStyles = {\n    width: rippleSize,\n    height: rippleSize,\n    top: -(rippleSize / 2) + rippleY,\n    left: -(rippleSize / 2) + rippleX\n  };\n  var childClassName = clsx(classes.child, leaving && classes.childLeaving, pulsate && classes.childPulsate);\n  var handleExited = useEventCallback(onExited); // Ripple is used for user feedback (e.g. click or press) so we want to apply styles with the highest priority\n\n  useEnhancedEffect(function () {\n    if (!inProp) {\n      // react-transition-group#onExit\n      setLeaving(true); // react-transition-group#onExited\n\n      var timeoutId = setTimeout(handleExited, timeout);\n      return function () {\n        clearTimeout(timeoutId);\n      };\n    }\n\n    return undefined;\n  }, [handleExited, inProp, timeout]);\n  return /*#__PURE__*/React.createElement(\"span\", {\n    className: rippleClassName,\n    style: rippleStyles\n  }, /*#__PURE__*/React.createElement(\"span\", {\n    className: childClassName\n  }));\n}\n\nprocess.env.NODE_ENV !== \"production\" ? Ripple.propTypes = {\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object.isRequired,\n\n  /**\n   * @ignore - injected from TransitionGroup\n   */\n  in: PropTypes.bool,\n\n  /**\n   * @ignore - injected from TransitionGroup\n   */\n  onExited: PropTypes.func,\n\n  /**\n   * If `true`, the ripple pulsates, typically indicating the keyboard focus state of an element.\n   */\n  pulsate: PropTypes.bool,\n\n  /**\n   * Diameter of the ripple.\n   */\n  rippleSize: PropTypes.number,\n\n  /**\n   * Horizontal position of the ripple center.\n   */\n  rippleX: PropTypes.number,\n\n  /**\n   * Vertical position of the ripple center.\n   */\n  rippleY: PropTypes.number,\n\n  /**\n   * exit delay\n   */\n  timeout: PropTypes.number.isRequired\n} : void 0;\nexport default Ripple;","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _toConsumableArray from \"@babel/runtime/helpers/esm/toConsumableArray\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport { TransitionGroup } from 'react-transition-group';\nimport clsx from 'clsx';\nimport withStyles from '../styles/withStyles';\nimport Ripple from './Ripple';\nvar DURATION = 550;\nexport var DELAY_RIPPLE = 80;\nexport var styles = function styles(theme) {\n  return {\n    /* Styles applied to the root element. */\n    root: {\n      overflow: 'hidden',\n      pointerEvents: 'none',\n      position: 'absolute',\n      zIndex: 0,\n      top: 0,\n      right: 0,\n      bottom: 0,\n      left: 0,\n      borderRadius: 'inherit'\n    },\n\n    /* Styles applied to the internal `Ripple` components `ripple` class. */\n    ripple: {\n      opacity: 0,\n      position: 'absolute'\n    },\n\n    /* Styles applied to the internal `Ripple` components `rippleVisible` class. */\n    rippleVisible: {\n      opacity: 0.3,\n      transform: 'scale(1)',\n      animation: \"$enter \".concat(DURATION, \"ms \").concat(theme.transitions.easing.easeInOut)\n    },\n\n    /* Styles applied to the internal `Ripple` components `ripplePulsate` class. */\n    ripplePulsate: {\n      animationDuration: \"\".concat(theme.transitions.duration.shorter, \"ms\")\n    },\n\n    /* Styles applied to the internal `Ripple` components `child` class. */\n    child: {\n      opacity: 1,\n      display: 'block',\n      width: '100%',\n      height: '100%',\n      borderRadius: '50%',\n      backgroundColor: 'currentColor'\n    },\n\n    /* Styles applied to the internal `Ripple` components `childLeaving` class. */\n    childLeaving: {\n      opacity: 0,\n      animation: \"$exit \".concat(DURATION, \"ms \").concat(theme.transitions.easing.easeInOut)\n    },\n\n    /* Styles applied to the internal `Ripple` components `childPulsate` class. */\n    childPulsate: {\n      position: 'absolute',\n      left: 0,\n      top: 0,\n      animation: \"$pulsate 2500ms \".concat(theme.transitions.easing.easeInOut, \" 200ms infinite\")\n    },\n    '@keyframes enter': {\n      '0%': {\n        transform: 'scale(0)',\n        opacity: 0.1\n      },\n      '100%': {\n        transform: 'scale(1)',\n        opacity: 0.3\n      }\n    },\n    '@keyframes exit': {\n      '0%': {\n        opacity: 1\n      },\n      '100%': {\n        opacity: 0\n      }\n    },\n    '@keyframes pulsate': {\n      '0%': {\n        transform: 'scale(1)'\n      },\n      '50%': {\n        transform: 'scale(0.92)'\n      },\n      '100%': {\n        transform: 'scale(1)'\n      }\n    }\n  };\n};\n/**\n * @ignore - internal component.\n *\n * TODO v5: Make private\n */\n\nvar TouchRipple = /*#__PURE__*/React.forwardRef(function TouchRipple(props, ref) {\n  var _props$center = props.center,\n      centerProp = _props$center === void 0 ? false : _props$center,\n      classes = props.classes,\n      className = props.className,\n      other = _objectWithoutProperties(props, [\"center\", \"classes\", \"className\"]);\n\n  var _React$useState = React.useState([]),\n      ripples = _React$useState[0],\n      setRipples = _React$useState[1];\n\n  var nextKey = React.useRef(0);\n  var rippleCallback = React.useRef(null);\n  React.useEffect(function () {\n    if (rippleCallback.current) {\n      rippleCallback.current();\n      rippleCallback.current = null;\n    }\n  }, [ripples]); // Used to filter out mouse emulated events on mobile.\n\n  var ignoringMouseDown = React.useRef(false); // We use a timer in order to only show the ripples for touch \"click\" like events.\n  // We don't want to display the ripple for touch scroll events.\n\n  var startTimer = React.useRef(null); // This is the hook called once the previous timeout is ready.\n\n  var startTimerCommit = React.useRef(null);\n  var container = React.useRef(null);\n  React.useEffect(function () {\n    return function () {\n      clearTimeout(startTimer.current);\n    };\n  }, []);\n  var startCommit = React.useCallback(function (params) {\n    var pulsate = params.pulsate,\n        rippleX = params.rippleX,\n        rippleY = params.rippleY,\n        rippleSize = params.rippleSize,\n        cb = params.cb;\n    setRipples(function (oldRipples) {\n      return [].concat(_toConsumableArray(oldRipples), [/*#__PURE__*/React.createElement(Ripple, {\n        key: nextKey.current,\n        classes: classes,\n        timeout: DURATION,\n        pulsate: pulsate,\n        rippleX: rippleX,\n        rippleY: rippleY,\n        rippleSize: rippleSize\n      })]);\n    });\n    nextKey.current += 1;\n    rippleCallback.current = cb;\n  }, [classes]);\n  var start = React.useCallback(function () {\n    var event = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n    var cb = arguments.length > 2 ? arguments[2] : undefined;\n    var _options$pulsate = options.pulsate,\n        pulsate = _options$pulsate === void 0 ? false : _options$pulsate,\n        _options$center = options.center,\n        center = _options$center === void 0 ? centerProp || options.pulsate : _options$center,\n        _options$fakeElement = options.fakeElement,\n        fakeElement = _options$fakeElement === void 0 ? false : _options$fakeElement;\n\n    if (event.type === 'mousedown' && ignoringMouseDown.current) {\n      ignoringMouseDown.current = false;\n      return;\n    }\n\n    if (event.type === 'touchstart') {\n      ignoringMouseDown.current = true;\n    }\n\n    var element = fakeElement ? null : container.current;\n    var rect = element ? element.getBoundingClientRect() : {\n      width: 0,\n      height: 0,\n      left: 0,\n      top: 0\n    }; // Get the size of the ripple\n\n    var rippleX;\n    var rippleY;\n    var rippleSize;\n\n    if (center || event.clientX === 0 && event.clientY === 0 || !event.clientX && !event.touches) {\n      rippleX = Math.round(rect.width / 2);\n      rippleY = Math.round(rect.height / 2);\n    } else {\n      var _ref = event.touches ? event.touches[0] : event,\n          clientX = _ref.clientX,\n          clientY = _ref.clientY;\n\n      rippleX = Math.round(clientX - rect.left);\n      rippleY = Math.round(clientY - rect.top);\n    }\n\n    if (center) {\n      rippleSize = Math.sqrt((2 * Math.pow(rect.width, 2) + Math.pow(rect.height, 2)) / 3); // For some reason the animation is broken on Mobile Chrome if the size if even.\n\n      if (rippleSize % 2 === 0) {\n        rippleSize += 1;\n      }\n    } else {\n      var sizeX = Math.max(Math.abs((element ? element.clientWidth : 0) - rippleX), rippleX) * 2 + 2;\n      var sizeY = Math.max(Math.abs((element ? element.clientHeight : 0) - rippleY), rippleY) * 2 + 2;\n      rippleSize = Math.sqrt(Math.pow(sizeX, 2) + Math.pow(sizeY, 2));\n    } // Touche devices\n\n\n    if (event.touches) {\n      // check that this isn't another touchstart due to multitouch\n      // otherwise we will only clear a single timer when unmounting while two\n      // are running\n      if (startTimerCommit.current === null) {\n        // Prepare the ripple effect.\n        startTimerCommit.current = function () {\n          startCommit({\n            pulsate: pulsate,\n            rippleX: rippleX,\n            rippleY: rippleY,\n            rippleSize: rippleSize,\n            cb: cb\n          });\n        }; // Delay the execution of the ripple effect.\n\n\n        startTimer.current = setTimeout(function () {\n          if (startTimerCommit.current) {\n            startTimerCommit.current();\n            startTimerCommit.current = null;\n          }\n        }, DELAY_RIPPLE); // We have to make a tradeoff with this value.\n      }\n    } else {\n      startCommit({\n        pulsate: pulsate,\n        rippleX: rippleX,\n        rippleY: rippleY,\n        rippleSize: rippleSize,\n        cb: cb\n      });\n    }\n  }, [centerProp, startCommit]);\n  var pulsate = React.useCallback(function () {\n    start({}, {\n      pulsate: true\n    });\n  }, [start]);\n  var stop = React.useCallback(function (event, cb) {\n    clearTimeout(startTimer.current); // The touch interaction occurs too quickly.\n    // We still want to show ripple effect.\n\n    if (event.type === 'touchend' && startTimerCommit.current) {\n      event.persist();\n      startTimerCommit.current();\n      startTimerCommit.current = null;\n      startTimer.current = setTimeout(function () {\n        stop(event, cb);\n      });\n      return;\n    }\n\n    startTimerCommit.current = null;\n    setRipples(function (oldRipples) {\n      if (oldRipples.length > 0) {\n        return oldRipples.slice(1);\n      }\n\n      return oldRipples;\n    });\n    rippleCallback.current = cb;\n  }, []);\n  React.useImperativeHandle(ref, function () {\n    return {\n      pulsate: pulsate,\n      start: start,\n      stop: stop\n    };\n  }, [pulsate, start, stop]);\n  return /*#__PURE__*/React.createElement(\"span\", _extends({\n    className: clsx(classes.root, className),\n    ref: container\n  }, other), /*#__PURE__*/React.createElement(TransitionGroup, {\n    component: null,\n    exit: true\n  }, ripples));\n});\nprocess.env.NODE_ENV !== \"production\" ? TouchRipple.propTypes = {\n  /**\n   * If `true`, the ripple starts at the center of the component\n   * rather than at the point of interaction.\n   */\n  center: PropTypes.bool,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object.isRequired,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string\n} : void 0;\nexport default withStyles(styles, {\n  flip: false,\n  name: 'MuiTouchRipple'\n})( /*#__PURE__*/React.memo(TouchRipple));","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport * as ReactDOM from 'react-dom';\nimport clsx from 'clsx';\nimport { elementTypeAcceptingRef, refType } from '@material-ui/utils';\nimport useForkRef from '../utils/useForkRef';\nimport useEventCallback from '../utils/useEventCallback';\nimport deprecatedPropType from '../utils/deprecatedPropType';\nimport withStyles from '../styles/withStyles';\nimport useIsFocusVisible from '../utils/useIsFocusVisible';\nimport TouchRipple from './TouchRipple';\nexport var styles = {\n  /* Styles applied to the root element. */\n  root: {\n    display: 'inline-flex',\n    alignItems: 'center',\n    justifyContent: 'center',\n    position: 'relative',\n    WebkitTapHighlightColor: 'transparent',\n    backgroundColor: 'transparent',\n    // Reset default value\n    // We disable the focus ring for mouse, touch and keyboard users.\n    outline: 0,\n    border: 0,\n    margin: 0,\n    // Remove the margin in Safari\n    borderRadius: 0,\n    padding: 0,\n    // Remove the padding in Firefox\n    cursor: 'pointer',\n    userSelect: 'none',\n    verticalAlign: 'middle',\n    '-moz-appearance': 'none',\n    // Reset\n    '-webkit-appearance': 'none',\n    // Reset\n    textDecoration: 'none',\n    // So we take precedent over the style of a native <a /> element.\n    color: 'inherit',\n    '&::-moz-focus-inner': {\n      borderStyle: 'none' // Remove Firefox dotted outline.\n\n    },\n    '&$disabled': {\n      pointerEvents: 'none',\n      // Disable link interactions\n      cursor: 'default'\n    },\n    '@media print': {\n      colorAdjust: 'exact'\n    }\n  },\n\n  /* Pseudo-class applied to the root element if `disabled={true}`. */\n  disabled: {},\n\n  /* Pseudo-class applied to the root element if keyboard focused. */\n  focusVisible: {}\n};\n/**\n * `ButtonBase` contains as few styles as possible.\n * It aims to be a simple building block for creating a button.\n * It contains a load of style reset and some focus/ripple logic.\n */\n\nvar ButtonBase = /*#__PURE__*/React.forwardRef(function ButtonBase(props, ref) {\n  var action = props.action,\n      buttonRefProp = props.buttonRef,\n      _props$centerRipple = props.centerRipple,\n      centerRipple = _props$centerRipple === void 0 ? false : _props$centerRipple,\n      children = props.children,\n      classes = props.classes,\n      className = props.className,\n      _props$component = props.component,\n      component = _props$component === void 0 ? 'button' : _props$component,\n      _props$disabled = props.disabled,\n      disabled = _props$disabled === void 0 ? false : _props$disabled,\n      _props$disableRipple = props.disableRipple,\n      disableRipple = _props$disableRipple === void 0 ? false : _props$disableRipple,\n      _props$disableTouchRi = props.disableTouchRipple,\n      disableTouchRipple = _props$disableTouchRi === void 0 ? false : _props$disableTouchRi,\n      _props$focusRipple = props.focusRipple,\n      focusRipple = _props$focusRipple === void 0 ? false : _props$focusRipple,\n      focusVisibleClassName = props.focusVisibleClassName,\n      onBlur = props.onBlur,\n      onClick = props.onClick,\n      onFocus = props.onFocus,\n      onFocusVisible = props.onFocusVisible,\n      onKeyDown = props.onKeyDown,\n      onKeyUp = props.onKeyUp,\n      onMouseDown = props.onMouseDown,\n      onMouseLeave = props.onMouseLeave,\n      onMouseUp = props.onMouseUp,\n      onTouchEnd = props.onTouchEnd,\n      onTouchMove = props.onTouchMove,\n      onTouchStart = props.onTouchStart,\n      onDragLeave = props.onDragLeave,\n      _props$tabIndex = props.tabIndex,\n      tabIndex = _props$tabIndex === void 0 ? 0 : _props$tabIndex,\n      TouchRippleProps = props.TouchRippleProps,\n      _props$type = props.type,\n      type = _props$type === void 0 ? 'button' : _props$type,\n      other = _objectWithoutProperties(props, [\"action\", \"buttonRef\", \"centerRipple\", \"children\", \"classes\", \"className\", \"component\", \"disabled\", \"disableRipple\", \"disableTouchRipple\", \"focusRipple\", \"focusVisibleClassName\", \"onBlur\", \"onClick\", \"onFocus\", \"onFocusVisible\", \"onKeyDown\", \"onKeyUp\", \"onMouseDown\", \"onMouseLeave\", \"onMouseUp\", \"onTouchEnd\", \"onTouchMove\", \"onTouchStart\", \"onDragLeave\", \"tabIndex\", \"TouchRippleProps\", \"type\"]);\n\n  var buttonRef = React.useRef(null);\n\n  function getButtonNode() {\n    // #StrictMode ready\n    return ReactDOM.findDOMNode(buttonRef.current);\n  }\n\n  var rippleRef = React.useRef(null);\n\n  var _React$useState = React.useState(false),\n      focusVisible = _React$useState[0],\n      setFocusVisible = _React$useState[1];\n\n  if (disabled && focusVisible) {\n    setFocusVisible(false);\n  }\n\n  var _useIsFocusVisible = useIsFocusVisible(),\n      isFocusVisible = _useIsFocusVisible.isFocusVisible,\n      onBlurVisible = _useIsFocusVisible.onBlurVisible,\n      focusVisibleRef = _useIsFocusVisible.ref;\n\n  React.useImperativeHandle(action, function () {\n    return {\n      focusVisible: function focusVisible() {\n        setFocusVisible(true);\n        buttonRef.current.focus();\n      }\n    };\n  }, []);\n  React.useEffect(function () {\n    if (focusVisible && focusRipple && !disableRipple) {\n      rippleRef.current.pulsate();\n    }\n  }, [disableRipple, focusRipple, focusVisible]);\n\n  function useRippleHandler(rippleAction, eventCallback) {\n    var skipRippleAction = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : disableTouchRipple;\n    return useEventCallback(function (event) {\n      if (eventCallback) {\n        eventCallback(event);\n      }\n\n      var ignore = skipRippleAction;\n\n      if (!ignore && rippleRef.current) {\n        rippleRef.current[rippleAction](event);\n      }\n\n      return true;\n    });\n  }\n\n  var handleMouseDown = useRippleHandler('start', onMouseDown);\n  var handleDragLeave = useRippleHandler('stop', onDragLeave);\n  var handleMouseUp = useRippleHandler('stop', onMouseUp);\n  var handleMouseLeave = useRippleHandler('stop', function (event) {\n    if (focusVisible) {\n      event.preventDefault();\n    }\n\n    if (onMouseLeave) {\n      onMouseLeave(event);\n    }\n  });\n  var handleTouchStart = useRippleHandler('start', onTouchStart);\n  var handleTouchEnd = useRippleHandler('stop', onTouchEnd);\n  var handleTouchMove = useRippleHandler('stop', onTouchMove);\n  var handleBlur = useRippleHandler('stop', function (event) {\n    if (focusVisible) {\n      onBlurVisible(event);\n      setFocusVisible(false);\n    }\n\n    if (onBlur) {\n      onBlur(event);\n    }\n  }, false);\n  var handleFocus = useEventCallback(function (event) {\n    // Fix for https://github.com/facebook/react/issues/7769\n    if (!buttonRef.current) {\n      buttonRef.current = event.currentTarget;\n    }\n\n    if (isFocusVisible(event)) {\n      setFocusVisible(true);\n\n      if (onFocusVisible) {\n        onFocusVisible(event);\n      }\n    }\n\n    if (onFocus) {\n      onFocus(event);\n    }\n  });\n\n  var isNonNativeButton = function isNonNativeButton() {\n    var button = getButtonNode();\n    return component && component !== 'button' && !(button.tagName === 'A' && button.href);\n  };\n  /**\n   * IE 11 shim for https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/repeat\n   */\n\n\n  var keydownRef = React.useRef(false);\n  var handleKeyDown = useEventCallback(function (event) {\n    // Check if key is already down to avoid repeats being counted as multiple activations\n    if (focusRipple && !keydownRef.current && focusVisible && rippleRef.current && event.key === ' ') {\n      keydownRef.current = true;\n      event.persist();\n      rippleRef.current.stop(event, function () {\n        rippleRef.current.start(event);\n      });\n    }\n\n    if (event.target === event.currentTarget && isNonNativeButton() && event.key === ' ') {\n      event.preventDefault();\n    }\n\n    if (onKeyDown) {\n      onKeyDown(event);\n    } // Keyboard accessibility for non interactive elements\n\n\n    if (event.target === event.currentTarget && isNonNativeButton() && event.key === 'Enter' && !disabled) {\n      event.preventDefault();\n\n      if (onClick) {\n        onClick(event);\n      }\n    }\n  });\n  var handleKeyUp = useEventCallback(function (event) {\n    // calling preventDefault in keyUp on a <button> will not dispatch a click event if Space is pressed\n    // https://codesandbox.io/s/button-keyup-preventdefault-dn7f0\n    if (focusRipple && event.key === ' ' && rippleRef.current && focusVisible && !event.defaultPrevented) {\n      keydownRef.current = false;\n      event.persist();\n      rippleRef.current.stop(event, function () {\n        rippleRef.current.pulsate(event);\n      });\n    }\n\n    if (onKeyUp) {\n      onKeyUp(event);\n    } // Keyboard accessibility for non interactive elements\n\n\n    if (onClick && event.target === event.currentTarget && isNonNativeButton() && event.key === ' ' && !event.defaultPrevented) {\n      onClick(event);\n    }\n  });\n  var ComponentProp = component;\n\n  if (ComponentProp === 'button' && other.href) {\n    ComponentProp = 'a';\n  }\n\n  var buttonProps = {};\n\n  if (ComponentProp === 'button') {\n    buttonProps.type = type;\n    buttonProps.disabled = disabled;\n  } else {\n    if (ComponentProp !== 'a' || !other.href) {\n      buttonProps.role = 'button';\n    }\n\n    buttonProps['aria-disabled'] = disabled;\n  }\n\n  var handleUserRef = useForkRef(buttonRefProp, ref);\n  var handleOwnRef = useForkRef(focusVisibleRef, buttonRef);\n  var handleRef = useForkRef(handleUserRef, handleOwnRef);\n\n  var _React$useState2 = React.useState(false),\n      mountedState = _React$useState2[0],\n      setMountedState = _React$useState2[1];\n\n  React.useEffect(function () {\n    setMountedState(true);\n  }, []);\n  var enableTouchRipple = mountedState && !disableRipple && !disabled;\n\n  if (process.env.NODE_ENV !== 'production') {\n    // eslint-disable-next-line react-hooks/rules-of-hooks\n    React.useEffect(function () {\n      if (enableTouchRipple && !rippleRef.current) {\n        console.error(['Material-UI: The `component` prop provided to ButtonBase is invalid.', 'Please make sure the children prop is rendered in this custom component.'].join('\\n'));\n      }\n    }, [enableTouchRipple]);\n  }\n\n  return /*#__PURE__*/React.createElement(ComponentProp, _extends({\n    className: clsx(classes.root, className, focusVisible && [classes.focusVisible, focusVisibleClassName], disabled && classes.disabled),\n    onBlur: handleBlur,\n    onClick: onClick,\n    onFocus: handleFocus,\n    onKeyDown: handleKeyDown,\n    onKeyUp: handleKeyUp,\n    onMouseDown: handleMouseDown,\n    onMouseLeave: handleMouseLeave,\n    onMouseUp: handleMouseUp,\n    onDragLeave: handleDragLeave,\n    onTouchEnd: handleTouchEnd,\n    onTouchMove: handleTouchMove,\n    onTouchStart: handleTouchStart,\n    ref: handleRef,\n    tabIndex: disabled ? -1 : tabIndex\n  }, buttonProps, other), children, enableTouchRipple ?\n  /*#__PURE__*/\n\n  /* TouchRipple is only needed client-side, x2 boost on the server. */\n  React.createElement(TouchRipple, _extends({\n    ref: rippleRef,\n    center: centerRipple\n  }, TouchRippleProps)) : null);\n});\nprocess.env.NODE_ENV !== \"production\" ? ButtonBase.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * A ref for imperative actions.\n   * It currently only supports `focusVisible()` action.\n   */\n  action: refType,\n\n  /**\n   * @ignore\n   *\n   * Use that prop to pass a ref to the native button component.\n   * @deprecated Use `ref` instead.\n   */\n  buttonRef: deprecatedPropType(refType, 'Use `ref` instead.'),\n\n  /**\n   * If `true`, the ripples will be centered.\n   * They won't start at the cursor interaction position.\n   */\n  centerRipple: PropTypes.bool,\n\n  /**\n   * The content of the component.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The component used for the root node.\n   * Either a string to use a HTML element or a component.\n   */\n  component: elementTypeAcceptingRef,\n\n  /**\n   * If `true`, the base button will be disabled.\n   */\n  disabled: PropTypes.bool,\n\n  /**\n   * If `true`, the ripple effect will be disabled.\n   *\n   * ⚠️ Without a ripple there is no styling for :focus-visible by default. Be sure\n   * to highlight the element by applying separate styles with the `focusVisibleClassName`.\n   */\n  disableRipple: PropTypes.bool,\n\n  /**\n   * If `true`, the touch ripple effect will be disabled.\n   */\n  disableTouchRipple: PropTypes.bool,\n\n  /**\n   * If `true`, the base button will have a keyboard focus ripple.\n   */\n  focusRipple: PropTypes.bool,\n\n  /**\n   * This prop can help identify which element has keyboard focus.\n   * The class name will be applied when the element gains the focus through keyboard interaction.\n   * It's a polyfill for the [CSS :focus-visible selector](https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo).\n   * The rationale for using this feature [is explained here](https://github.com/WICG/focus-visible/blob/master/explainer.md).\n   * A [polyfill can be used](https://github.com/WICG/focus-visible) to apply a `focus-visible` class to other components\n   * if needed.\n   */\n  focusVisibleClassName: PropTypes.string,\n\n  /**\n   * @ignore\n   */\n  href: PropTypes.string,\n\n  /**\n   * @ignore\n   */\n  onBlur: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onClick: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onDragLeave: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onFocus: PropTypes.func,\n\n  /**\n   * Callback fired when the component is focused with a keyboard.\n   * We trigger a `onFocus` callback too.\n   */\n  onFocusVisible: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onKeyDown: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onKeyUp: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onMouseDown: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onMouseLeave: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onMouseUp: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onTouchEnd: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onTouchMove: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onTouchStart: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  tabIndex: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * Props applied to the `TouchRipple` element.\n   */\n  TouchRippleProps: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  type: PropTypes.oneOfType([PropTypes.oneOf(['button', 'reset', 'submit']), PropTypes.string])\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiButtonBase'\n})(ButtonBase);","export default {\n  disabled: false\n};","import _objectWithoutPropertiesLoose from \"@babel/runtime/helpers/esm/objectWithoutPropertiesLoose\";\nimport _inheritsLoose from \"@babel/runtime/helpers/esm/inheritsLoose\";\nimport PropTypes from 'prop-types';\nimport React from 'react';\nimport ReactDOM from 'react-dom';\nimport config from './config';\nimport { timeoutsShape } from './utils/PropTypes';\nimport TransitionGroupContext from './TransitionGroupContext';\nexport var UNMOUNTED = 'unmounted';\nexport var EXITED = 'exited';\nexport var ENTERING = 'entering';\nexport var ENTERED = 'entered';\nexport var EXITING = 'exiting';\n/**\n * The Transition component lets you describe a transition from one component\n * state to another _over time_ with a simple declarative API. Most commonly\n * it's used to animate the mounting and unmounting of a component, but can also\n * be used to describe in-place transition states as well.\n *\n * ---\n *\n * **Note**: `Transition` is a platform-agnostic base component. If you're using\n * transitions in CSS, you'll probably want to use\n * [`CSSTransition`](https://reactcommunity.org/react-transition-group/css-transition)\n * instead. It inherits all the features of `Transition`, but contains\n * additional features necessary to play nice with CSS transitions (hence the\n * name of the component).\n *\n * ---\n *\n * By default the `Transition` component does not alter the behavior of the\n * component it renders, it only tracks \"enter\" and \"exit\" states for the\n * components. It's up to you to give meaning and effect to those states. For\n * example we can add styles to a component when it enters or exits:\n *\n * ```jsx\n * import { Transition } from 'react-transition-group';\n *\n * const duration = 300;\n *\n * const defaultStyle = {\n *   transition: `opacity ${duration}ms ease-in-out`,\n *   opacity: 0,\n * }\n *\n * const transitionStyles = {\n *   entering: { opacity: 1 },\n *   entered:  { opacity: 1 },\n *   exiting:  { opacity: 0 },\n *   exited:  { opacity: 0 },\n * };\n *\n * const Fade = ({ in: inProp }) => (\n *   <Transition in={inProp} timeout={duration}>\n *     {state => (\n *       <div style={{\n *         ...defaultStyle,\n *         ...transitionStyles[state]\n *       }}>\n *         I'm a fade Transition!\n *       </div>\n *     )}\n *   </Transition>\n * );\n * ```\n *\n * There are 4 main states a Transition can be in:\n *  - `'entering'`\n *  - `'entered'`\n *  - `'exiting'`\n *  - `'exited'`\n *\n * Transition state is toggled via the `in` prop. When `true` the component\n * begins the \"Enter\" stage. During this stage, the component will shift from\n * its current transition state, to `'entering'` for the duration of the\n * transition and then to the `'entered'` stage once it's complete. Let's take\n * the following example (we'll use the\n * [useState](https://reactjs.org/docs/hooks-reference.html#usestate) hook):\n *\n * ```jsx\n * function App() {\n *   const [inProp, setInProp] = useState(false);\n *   return (\n *     <div>\n *       <Transition in={inProp} timeout={500}>\n *         {state => (\n *           // ...\n *         )}\n *       </Transition>\n *       <button onClick={() => setInProp(true)}>\n *         Click to Enter\n *       </button>\n *     </div>\n *   );\n * }\n * ```\n *\n * When the button is clicked the component will shift to the `'entering'` state\n * and stay there for 500ms (the value of `timeout`) before it finally switches\n * to `'entered'`.\n *\n * When `in` is `false` the same thing happens except the state moves from\n * `'exiting'` to `'exited'`.\n */\n\nvar Transition = /*#__PURE__*/function (_React$Component) {\n  _inheritsLoose(Transition, _React$Component);\n\n  function Transition(props, context) {\n    var _this;\n\n    _this = _React$Component.call(this, props, context) || this;\n    var parentGroup = context; // In the context of a TransitionGroup all enters are really appears\n\n    var appear = parentGroup && !parentGroup.isMounting ? props.enter : props.appear;\n    var initialStatus;\n    _this.appearStatus = null;\n\n    if (props.in) {\n      if (appear) {\n        initialStatus = EXITED;\n        _this.appearStatus = ENTERING;\n      } else {\n        initialStatus = ENTERED;\n      }\n    } else {\n      if (props.unmountOnExit || props.mountOnEnter) {\n        initialStatus = UNMOUNTED;\n      } else {\n        initialStatus = EXITED;\n      }\n    }\n\n    _this.state = {\n      status: initialStatus\n    };\n    _this.nextCallback = null;\n    return _this;\n  }\n\n  Transition.getDerivedStateFromProps = function getDerivedStateFromProps(_ref, prevState) {\n    var nextIn = _ref.in;\n\n    if (nextIn && prevState.status === UNMOUNTED) {\n      return {\n        status: EXITED\n      };\n    }\n\n    return null;\n  } // getSnapshotBeforeUpdate(prevProps) {\n  //   let nextStatus = null\n  //   if (prevProps !== this.props) {\n  //     const { status } = this.state\n  //     if (this.props.in) {\n  //       if (status !== ENTERING && status !== ENTERED) {\n  //         nextStatus = ENTERING\n  //       }\n  //     } else {\n  //       if (status === ENTERING || status === ENTERED) {\n  //         nextStatus = EXITING\n  //       }\n  //     }\n  //   }\n  //   return { nextStatus }\n  // }\n  ;\n\n  var _proto = Transition.prototype;\n\n  _proto.componentDidMount = function componentDidMount() {\n    this.updateStatus(true, this.appearStatus);\n  };\n\n  _proto.componentDidUpdate = function componentDidUpdate(prevProps) {\n    var nextStatus = null;\n\n    if (prevProps !== this.props) {\n      var status = this.state.status;\n\n      if (this.props.in) {\n        if (status !== ENTERING && status !== ENTERED) {\n          nextStatus = ENTERING;\n        }\n      } else {\n        if (status === ENTERING || status === ENTERED) {\n          nextStatus = EXITING;\n        }\n      }\n    }\n\n    this.updateStatus(false, nextStatus);\n  };\n\n  _proto.componentWillUnmount = function componentWillUnmount() {\n    this.cancelNextCallback();\n  };\n\n  _proto.getTimeouts = function getTimeouts() {\n    var timeout = this.props.timeout;\n    var exit, enter, appear;\n    exit = enter = appear = timeout;\n\n    if (timeout != null && typeof timeout !== 'number') {\n      exit = timeout.exit;\n      enter = timeout.enter; // TODO: remove fallback for next major\n\n      appear = timeout.appear !== undefined ? timeout.appear : enter;\n    }\n\n    return {\n      exit: exit,\n      enter: enter,\n      appear: appear\n    };\n  };\n\n  _proto.updateStatus = function updateStatus(mounting, nextStatus) {\n    if (mounting === void 0) {\n      mounting = false;\n    }\n\n    if (nextStatus !== null) {\n      // nextStatus will always be ENTERING or EXITING.\n      this.cancelNextCallback();\n\n      if (nextStatus === ENTERING) {\n        this.performEnter(mounting);\n      } else {\n        this.performExit();\n      }\n    } else if (this.props.unmountOnExit && this.state.status === EXITED) {\n      this.setState({\n        status: UNMOUNTED\n      });\n    }\n  };\n\n  _proto.performEnter = function performEnter(mounting) {\n    var _this2 = this;\n\n    var enter = this.props.enter;\n    var appearing = this.context ? this.context.isMounting : mounting;\n\n    var _ref2 = this.props.nodeRef ? [appearing] : [ReactDOM.findDOMNode(this), appearing],\n        maybeNode = _ref2[0],\n        maybeAppearing = _ref2[1];\n\n    var timeouts = this.getTimeouts();\n    var enterTimeout = appearing ? timeouts.appear : timeouts.enter; // no enter animation skip right to ENTERED\n    // if we are mounting and running this it means appear _must_ be set\n\n    if (!mounting && !enter || config.disabled) {\n      this.safeSetState({\n        status: ENTERED\n      }, function () {\n        _this2.props.onEntered(maybeNode);\n      });\n      return;\n    }\n\n    this.props.onEnter(maybeNode, maybeAppearing);\n    this.safeSetState({\n      status: ENTERING\n    }, function () {\n      _this2.props.onEntering(maybeNode, maybeAppearing);\n\n      _this2.onTransitionEnd(enterTimeout, function () {\n        _this2.safeSetState({\n          status: ENTERED\n        }, function () {\n          _this2.props.onEntered(maybeNode, maybeAppearing);\n        });\n      });\n    });\n  };\n\n  _proto.performExit = function performExit() {\n    var _this3 = this;\n\n    var exit = this.props.exit;\n    var timeouts = this.getTimeouts();\n    var maybeNode = this.props.nodeRef ? undefined : ReactDOM.findDOMNode(this); // no exit animation skip right to EXITED\n\n    if (!exit || config.disabled) {\n      this.safeSetState({\n        status: EXITED\n      }, function () {\n        _this3.props.onExited(maybeNode);\n      });\n      return;\n    }\n\n    this.props.onExit(maybeNode);\n    this.safeSetState({\n      status: EXITING\n    }, function () {\n      _this3.props.onExiting(maybeNode);\n\n      _this3.onTransitionEnd(timeouts.exit, function () {\n        _this3.safeSetState({\n          status: EXITED\n        }, function () {\n          _this3.props.onExited(maybeNode);\n        });\n      });\n    });\n  };\n\n  _proto.cancelNextCallback = function cancelNextCallback() {\n    if (this.nextCallback !== null) {\n      this.nextCallback.cancel();\n      this.nextCallback = null;\n    }\n  };\n\n  _proto.safeSetState = function safeSetState(nextState, callback) {\n    // This shouldn't be necessary, but there are weird race conditions with\n    // setState callbacks and unmounting in testing, so always make sure that\n    // we can cancel any pending setState callbacks after we unmount.\n    callback = this.setNextCallback(callback);\n    this.setState(nextState, callback);\n  };\n\n  _proto.setNextCallback = function setNextCallback(callback) {\n    var _this4 = this;\n\n    var active = true;\n\n    this.nextCallback = function (event) {\n      if (active) {\n        active = false;\n        _this4.nextCallback = null;\n        callback(event);\n      }\n    };\n\n    this.nextCallback.cancel = function () {\n      active = false;\n    };\n\n    return this.nextCallback;\n  };\n\n  _proto.onTransitionEnd = function onTransitionEnd(timeout, handler) {\n    this.setNextCallback(handler);\n    var node = this.props.nodeRef ? this.props.nodeRef.current : ReactDOM.findDOMNode(this);\n    var doesNotHaveTimeoutOrListener = timeout == null && !this.props.addEndListener;\n\n    if (!node || doesNotHaveTimeoutOrListener) {\n      setTimeout(this.nextCallback, 0);\n      return;\n    }\n\n    if (this.props.addEndListener) {\n      var _ref3 = this.props.nodeRef ? [this.nextCallback] : [node, this.nextCallback],\n          maybeNode = _ref3[0],\n          maybeNextCallback = _ref3[1];\n\n      this.props.addEndListener(maybeNode, maybeNextCallback);\n    }\n\n    if (timeout != null) {\n      setTimeout(this.nextCallback, timeout);\n    }\n  };\n\n  _proto.render = function render() {\n    var status = this.state.status;\n\n    if (status === UNMOUNTED) {\n      return null;\n    }\n\n    var _this$props = this.props,\n        children = _this$props.children,\n        _in = _this$props.in,\n        _mountOnEnter = _this$props.mountOnEnter,\n        _unmountOnExit = _this$props.unmountOnExit,\n        _appear = _this$props.appear,\n        _enter = _this$props.enter,\n        _exit = _this$props.exit,\n        _timeout = _this$props.timeout,\n        _addEndListener = _this$props.addEndListener,\n        _onEnter = _this$props.onEnter,\n        _onEntering = _this$props.onEntering,\n        _onEntered = _this$props.onEntered,\n        _onExit = _this$props.onExit,\n        _onExiting = _this$props.onExiting,\n        _onExited = _this$props.onExited,\n        _nodeRef = _this$props.nodeRef,\n        childProps = _objectWithoutPropertiesLoose(_this$props, [\"children\", \"in\", \"mountOnEnter\", \"unmountOnExit\", \"appear\", \"enter\", \"exit\", \"timeout\", \"addEndListener\", \"onEnter\", \"onEntering\", \"onEntered\", \"onExit\", \"onExiting\", \"onExited\", \"nodeRef\"]);\n\n    return (\n      /*#__PURE__*/\n      // allows for nested Transitions\n      React.createElement(TransitionGroupContext.Provider, {\n        value: null\n      }, typeof children === 'function' ? children(status, childProps) : React.cloneElement(React.Children.only(children), childProps))\n    );\n  };\n\n  return Transition;\n}(React.Component);\n\nTransition.contextType = TransitionGroupContext;\nTransition.propTypes = process.env.NODE_ENV !== \"production\" ? {\n  /**\n   * A React reference to DOM element that need to transition:\n   * https://stackoverflow.com/a/51127130/4671932\n   *\n   *   - When `nodeRef` prop is used, `node` is not passed to callback functions\n   *      (e.g. `onEnter`) because user already has direct access to the node.\n   *   - When changing `key` prop of `Transition` in a `TransitionGroup` a new\n   *     `nodeRef` need to be provided to `Transition` with changed `key` prop\n   *     (see\n   *     [test/CSSTransition-test.js](https://github.com/reactjs/react-transition-group/blob/13435f897b3ab71f6e19d724f145596f5910581c/test/CSSTransition-test.js#L362-L437)).\n   */\n  nodeRef: PropTypes.shape({\n    current: typeof Element === 'undefined' ? PropTypes.any : PropTypes.instanceOf(Element)\n  }),\n\n  /**\n   * A `function` child can be used instead of a React element. This function is\n   * called with the current transition status (`'entering'`, `'entered'`,\n   * `'exiting'`, `'exited'`), which can be used to apply context\n   * specific props to a component.\n   *\n   * ```jsx\n   * <Transition in={this.state.in} timeout={150}>\n   *   {state => (\n   *     <MyComponent className={`fade fade-${state}`} />\n   *   )}\n   * </Transition>\n   * ```\n   */\n  children: PropTypes.oneOfType([PropTypes.func.isRequired, PropTypes.element.isRequired]).isRequired,\n\n  /**\n   * Show the component; triggers the enter or exit states\n   */\n  in: PropTypes.bool,\n\n  /**\n   * By default the child component is mounted immediately along with\n   * the parent `Transition` component. If you want to \"lazy mount\" the component on the\n   * first `in={true}` you can set `mountOnEnter`. After the first enter transition the component will stay\n   * mounted, even on \"exited\", unless you also specify `unmountOnExit`.\n   */\n  mountOnEnter: PropTypes.bool,\n\n  /**\n   * By default the child component stays mounted after it reaches the `'exited'` state.\n   * Set `unmountOnExit` if you'd prefer to unmount the component after it finishes exiting.\n   */\n  unmountOnExit: PropTypes.bool,\n\n  /**\n   * By default the child component does not perform the enter transition when\n   * it first mounts, regardless of the value of `in`. If you want this\n   * behavior, set both `appear` and `in` to `true`.\n   *\n   * > **Note**: there are no special appear states like `appearing`/`appeared`, this prop\n   * > only adds an additional enter transition. However, in the\n   * > `<CSSTransition>` component that first enter transition does result in\n   * > additional `.appear-*` classes, that way you can choose to style it\n   * > differently.\n   */\n  appear: PropTypes.bool,\n\n  /**\n   * Enable or disable enter transitions.\n   */\n  enter: PropTypes.bool,\n\n  /**\n   * Enable or disable exit transitions.\n   */\n  exit: PropTypes.bool,\n\n  /**\n   * The duration of the transition, in milliseconds.\n   * Required unless `addEndListener` is provided.\n   *\n   * You may specify a single timeout for all transitions:\n   *\n   * ```jsx\n   * timeout={500}\n   * ```\n   *\n   * or individually:\n   *\n   * ```jsx\n   * timeout={{\n   *  appear: 500,\n   *  enter: 300,\n   *  exit: 500,\n   * }}\n   * ```\n   *\n   * - `appear` defaults to the value of `enter`\n   * - `enter` defaults to `0`\n   * - `exit` defaults to `0`\n   *\n   * @type {number | { enter?: number, exit?: number, appear?: number }}\n   */\n  timeout: function timeout(props) {\n    var pt = timeoutsShape;\n    if (!props.addEndListener) pt = pt.isRequired;\n\n    for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {\n      args[_key - 1] = arguments[_key];\n    }\n\n    return pt.apply(void 0, [props].concat(args));\n  },\n\n  /**\n   * Add a custom transition end trigger. Called with the transitioning\n   * DOM node and a `done` callback. Allows for more fine grained transition end\n   * logic. Timeouts are still used as a fallback if provided.\n   *\n   * **Note**: when `nodeRef` prop is passed, `node` is not passed.\n   *\n   * ```jsx\n   * addEndListener={(node, done) => {\n   *   // use the css transitionend event to mark the finish of a transition\n   *   node.addEventListener('transitionend', done, false);\n   * }}\n   * ```\n   */\n  addEndListener: PropTypes.func,\n\n  /**\n   * Callback fired before the \"entering\" status is applied. An extra parameter\n   * `isAppearing` is supplied to indicate if the enter stage is occurring on the initial mount\n   *\n   * **Note**: when `nodeRef` prop is passed, `node` is not passed.\n   *\n   * @type Function(node: HtmlElement, isAppearing: bool) -> void\n   */\n  onEnter: PropTypes.func,\n\n  /**\n   * Callback fired after the \"entering\" status is applied. An extra parameter\n   * `isAppearing` is supplied to indicate if the enter stage is occurring on the initial mount\n   *\n   * **Note**: when `nodeRef` prop is passed, `node` is not passed.\n   *\n   * @type Function(node: HtmlElement, isAppearing: bool)\n   */\n  onEntering: PropTypes.func,\n\n  /**\n   * Callback fired after the \"entered\" status is applied. An extra parameter\n   * `isAppearing` is supplied to indicate if the enter stage is occurring on the initial mount\n   *\n   * **Note**: when `nodeRef` prop is passed, `node` is not passed.\n   *\n   * @type Function(node: HtmlElement, isAppearing: bool) -> void\n   */\n  onEntered: PropTypes.func,\n\n  /**\n   * Callback fired before the \"exiting\" status is applied.\n   *\n   * **Note**: when `nodeRef` prop is passed, `node` is not passed.\n   *\n   * @type Function(node: HtmlElement) -> void\n   */\n  onExit: PropTypes.func,\n\n  /**\n   * Callback fired after the \"exiting\" status is applied.\n   *\n   * **Note**: when `nodeRef` prop is passed, `node` is not passed.\n   *\n   * @type Function(node: HtmlElement) -> void\n   */\n  onExiting: PropTypes.func,\n\n  /**\n   * Callback fired after the \"exited\" status is applied.\n   *\n   * **Note**: when `nodeRef` prop is passed, `node` is not passed\n   *\n   * @type Function(node: HtmlElement) -> void\n   */\n  onExited: PropTypes.func\n} : {}; // Name the function so it is clearer in the documentation\n\nfunction noop() {}\n\nTransition.defaultProps = {\n  in: false,\n  mountOnEnter: false,\n  unmountOnExit: false,\n  appear: false,\n  enter: true,\n  exit: true,\n  onEnter: noop,\n  onEntering: noop,\n  onEntered: noop,\n  onExit: noop,\n  onExiting: noop,\n  onExited: noop\n};\nTransition.UNMOUNTED = UNMOUNTED;\nTransition.EXITED = EXITED;\nTransition.ENTERING = ENTERING;\nTransition.ENTERED = ENTERED;\nTransition.EXITING = EXITING;\nexport default Transition;","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _typeof from \"@babel/runtime/helpers/esm/typeof\";\nexport function isPlainObject(item) {\n  return item && _typeof(item) === 'object' && item.constructor === Object;\n}\nexport default function deepmerge(target, source) {\n  var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {\n    clone: true\n  };\n  var output = options.clone ? _extends({}, target) : target;\n\n  if (isPlainObject(target) && isPlainObject(source)) {\n    Object.keys(source).forEach(function (key) {\n      // Avoid prototype pollution\n      if (key === '__proto__') {\n        return;\n      }\n\n      if (isPlainObject(source[key]) && key in target) {\n        output[key] = deepmerge(target[key], source[key], options);\n      } else {\n        output[key] = source[key];\n      }\n    });\n  }\n\n  return output;\n}","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport { makeStyles as makeStylesWithoutDefault } from '@material-ui/styles';\nimport defaultTheme from './defaultTheme';\n\nfunction makeStyles(stylesOrCreator) {\n  var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n  return makeStylesWithoutDefault(stylesOrCreator, _extends({\n    defaultTheme: defaultTheme\n  }, options));\n}\n\nexport default makeStyles;","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport { getDisplayName } from '@material-ui/utils';\nexport default function mergeClasses() {\n  var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n  var baseClasses = options.baseClasses,\n      newClasses = options.newClasses,\n      Component = options.Component;\n\n  if (!newClasses) {\n    return baseClasses;\n  }\n\n  var nextClasses = _extends({}, baseClasses);\n\n  if (process.env.NODE_ENV !== 'production') {\n    if (typeof newClasses === 'string') {\n      console.error([\"Material-UI: The value `\".concat(newClasses, \"` \") + \"provided to the classes prop of \".concat(getDisplayName(Component), \" is incorrect.\"), 'You might want to use the className prop instead.'].join('\\n'));\n      return baseClasses;\n    }\n  }\n\n  Object.keys(newClasses).forEach(function (key) {\n    if (process.env.NODE_ENV !== 'production') {\n      if (!baseClasses[key] && newClasses[key]) {\n        console.error([\"Material-UI: The key `\".concat(key, \"` \") + \"provided to the classes prop is not implemented in \".concat(getDisplayName(Component), \".\"), \"You can only override one of the following: \".concat(Object.keys(baseClasses).join(','), \".\")].join('\\n'));\n      }\n\n      if (newClasses[key] && typeof newClasses[key] !== 'string') {\n        console.error([\"Material-UI: The key `\".concat(key, \"` \") + \"provided to the classes prop is not valid for \".concat(getDisplayName(Component), \".\"), \"You need to provide a non empty string instead of: \".concat(newClasses[key], \".\")].join('\\n'));\n      }\n    }\n\n    if (newClasses[key]) {\n      nextClasses[key] = \"\".concat(baseClasses[key], \" \").concat(newClasses[key]);\n    }\n  });\n  return nextClasses;\n}","import _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport _extends from \"@babel/runtime/helpers/esm/extends\";\n// A grid component using the following libs as inspiration.\n//\n// For the implementation:\n// - https://getbootstrap.com/docs/4.3/layout/grid/\n// - https://github.com/kristoferjoseph/flexboxgrid/blob/master/src/css/flexboxgrid.css\n// - https://github.com/roylee0704/react-flexbox-grid\n// - https://material.angularjs.org/latest/layout/introduction\n//\n// Follow this flexbox Guide to better understand the underlying model:\n// - https://css-tricks.com/snippets/css/a-guide-to-flexbox/\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport withStyles from '../styles/withStyles';\nimport requirePropFactory from '../utils/requirePropFactory';\nimport deprecatedPropType from '../utils/deprecatedPropType';\nvar SPACINGS = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10];\nvar GRID_SIZES = ['auto', true, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12];\n\nfunction generateGrid(globalStyles, theme, breakpoint) {\n  var styles = {};\n  GRID_SIZES.forEach(function (size) {\n    var key = \"grid-\".concat(breakpoint, \"-\").concat(size);\n\n    if (size === true) {\n      // For the auto layouting\n      styles[key] = {\n        flexBasis: 0,\n        flexGrow: 1,\n        maxWidth: '100%'\n      };\n      return;\n    }\n\n    if (size === 'auto') {\n      styles[key] = {\n        flexBasis: 'auto',\n        flexGrow: 0,\n        maxWidth: 'none'\n      };\n      return;\n    } // Keep 7 significant numbers.\n\n\n    var width = \"\".concat(Math.round(size / 12 * 10e7) / 10e5, \"%\"); // Close to the bootstrap implementation:\n    // https://github.com/twbs/bootstrap/blob/8fccaa2439e97ec72a4b7dc42ccc1f649790adb0/scss/mixins/_grid.scss#L41\n\n    styles[key] = {\n      flexBasis: width,\n      flexGrow: 0,\n      maxWidth: width\n    };\n  }); // No need for a media query for the first size.\n\n  if (breakpoint === 'xs') {\n    _extends(globalStyles, styles);\n  } else {\n    globalStyles[theme.breakpoints.up(breakpoint)] = styles;\n  }\n}\n\nfunction getOffset(val) {\n  var div = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;\n  var parse = parseFloat(val);\n  return \"\".concat(parse / div).concat(String(val).replace(String(parse), '') || 'px');\n}\n\nfunction generateGutter(theme, breakpoint) {\n  var styles = {};\n  SPACINGS.forEach(function (spacing) {\n    var themeSpacing = theme.spacing(spacing);\n\n    if (themeSpacing === 0) {\n      return;\n    }\n\n    styles[\"spacing-\".concat(breakpoint, \"-\").concat(spacing)] = {\n      margin: \"-\".concat(getOffset(themeSpacing, 2)),\n      width: \"calc(100% + \".concat(getOffset(themeSpacing), \")\"),\n      '& > $item': {\n        padding: getOffset(themeSpacing, 2)\n      }\n    };\n  });\n  return styles;\n} // Default CSS values\n// flex: '0 1 auto',\n// flexDirection: 'row',\n// alignItems: 'flex-start',\n// flexWrap: 'nowrap',\n// justifyContent: 'flex-start',\n\n\nexport var styles = function styles(theme) {\n  return _extends({\n    /* Styles applied to the root element. */\n    root: {},\n\n    /* Styles applied to the root element if `container={true}`. */\n    container: {\n      boxSizing: 'border-box',\n      display: 'flex',\n      flexWrap: 'wrap',\n      width: '100%'\n    },\n\n    /* Styles applied to the root element if `item={true}`. */\n    item: {\n      boxSizing: 'border-box',\n      margin: '0' // For instance, it's useful when used with a `figure` element.\n\n    },\n\n    /* Styles applied to the root element if `zeroMinWidth={true}`. */\n    zeroMinWidth: {\n      minWidth: 0\n    },\n\n    /* Styles applied to the root element if `direction=\"column\"`. */\n    'direction-xs-column': {\n      flexDirection: 'column'\n    },\n\n    /* Styles applied to the root element if `direction=\"column-reverse\"`. */\n    'direction-xs-column-reverse': {\n      flexDirection: 'column-reverse'\n    },\n\n    /* Styles applied to the root element if `direction=\"row-reverse\"`. */\n    'direction-xs-row-reverse': {\n      flexDirection: 'row-reverse'\n    },\n\n    /* Styles applied to the root element if `wrap=\"nowrap\"`. */\n    'wrap-xs-nowrap': {\n      flexWrap: 'nowrap'\n    },\n\n    /* Styles applied to the root element if `wrap=\"reverse\"`. */\n    'wrap-xs-wrap-reverse': {\n      flexWrap: 'wrap-reverse'\n    },\n\n    /* Styles applied to the root element if `alignItems=\"center\"`. */\n    'align-items-xs-center': {\n      alignItems: 'center'\n    },\n\n    /* Styles applied to the root element if `alignItems=\"flex-start\"`. */\n    'align-items-xs-flex-start': {\n      alignItems: 'flex-start'\n    },\n\n    /* Styles applied to the root element if `alignItems=\"flex-end\"`. */\n    'align-items-xs-flex-end': {\n      alignItems: 'flex-end'\n    },\n\n    /* Styles applied to the root element if `alignItems=\"baseline\"`. */\n    'align-items-xs-baseline': {\n      alignItems: 'baseline'\n    },\n\n    /* Styles applied to the root element if `alignContent=\"center\"`. */\n    'align-content-xs-center': {\n      alignContent: 'center'\n    },\n\n    /* Styles applied to the root element if `alignContent=\"flex-start\"`. */\n    'align-content-xs-flex-start': {\n      alignContent: 'flex-start'\n    },\n\n    /* Styles applied to the root element if `alignContent=\"flex-end\"`. */\n    'align-content-xs-flex-end': {\n      alignContent: 'flex-end'\n    },\n\n    /* Styles applied to the root element if `alignContent=\"space-between\"`. */\n    'align-content-xs-space-between': {\n      alignContent: 'space-between'\n    },\n\n    /* Styles applied to the root element if `alignContent=\"space-around\"`. */\n    'align-content-xs-space-around': {\n      alignContent: 'space-around'\n    },\n\n    /* Styles applied to the root element if `justifyContent=\"center\"`. */\n    'justify-content-xs-center': {\n      justifyContent: 'center'\n    },\n\n    /* Styles applied to the root element if `justifyContent=\"flex-end\"`. */\n    'justify-content-xs-flex-end': {\n      justifyContent: 'flex-end'\n    },\n\n    /* Styles applied to the root element if `justifyContent=\"space-between\"`. */\n    'justify-content-xs-space-between': {\n      justifyContent: 'space-between'\n    },\n\n    /* Styles applied to the root element if `justifyContent=\"space-around\"`. */\n    'justify-content-xs-space-around': {\n      justifyContent: 'space-around'\n    },\n\n    /* Styles applied to the root element if `justifyContent=\"space-evenly\"`. */\n    'justify-content-xs-space-evenly': {\n      justifyContent: 'space-evenly'\n    }\n  }, generateGutter(theme, 'xs'), theme.breakpoints.keys.reduce(function (accumulator, key) {\n    // Use side effect over immutability for better performance.\n    generateGrid(accumulator, theme, key);\n    return accumulator;\n  }, {}));\n};\nvar Grid = /*#__PURE__*/React.forwardRef(function Grid(props, ref) {\n  var _props$alignContent = props.alignContent,\n      alignContent = _props$alignContent === void 0 ? 'stretch' : _props$alignContent,\n      _props$alignItems = props.alignItems,\n      alignItems = _props$alignItems === void 0 ? 'stretch' : _props$alignItems,\n      classes = props.classes,\n      classNameProp = props.className,\n      _props$component = props.component,\n      Component = _props$component === void 0 ? 'div' : _props$component,\n      _props$container = props.container,\n      container = _props$container === void 0 ? false : _props$container,\n      _props$direction = props.direction,\n      direction = _props$direction === void 0 ? 'row' : _props$direction,\n      _props$item = props.item,\n      item = _props$item === void 0 ? false : _props$item,\n      justify = props.justify,\n      _props$justifyContent = props.justifyContent,\n      justifyContent = _props$justifyContent === void 0 ? 'flex-start' : _props$justifyContent,\n      _props$lg = props.lg,\n      lg = _props$lg === void 0 ? false : _props$lg,\n      _props$md = props.md,\n      md = _props$md === void 0 ? false : _props$md,\n      _props$sm = props.sm,\n      sm = _props$sm === void 0 ? false : _props$sm,\n      _props$spacing = props.spacing,\n      spacing = _props$spacing === void 0 ? 0 : _props$spacing,\n      _props$wrap = props.wrap,\n      wrap = _props$wrap === void 0 ? 'wrap' : _props$wrap,\n      _props$xl = props.xl,\n      xl = _props$xl === void 0 ? false : _props$xl,\n      _props$xs = props.xs,\n      xs = _props$xs === void 0 ? false : _props$xs,\n      _props$zeroMinWidth = props.zeroMinWidth,\n      zeroMinWidth = _props$zeroMinWidth === void 0 ? false : _props$zeroMinWidth,\n      other = _objectWithoutProperties(props, [\"alignContent\", \"alignItems\", \"classes\", \"className\", \"component\", \"container\", \"direction\", \"item\", \"justify\", \"justifyContent\", \"lg\", \"md\", \"sm\", \"spacing\", \"wrap\", \"xl\", \"xs\", \"zeroMinWidth\"]);\n\n  var className = clsx(classes.root, classNameProp, container && [classes.container, spacing !== 0 && classes[\"spacing-xs-\".concat(String(spacing))]], item && classes.item, zeroMinWidth && classes.zeroMinWidth, direction !== 'row' && classes[\"direction-xs-\".concat(String(direction))], wrap !== 'wrap' && classes[\"wrap-xs-\".concat(String(wrap))], alignItems !== 'stretch' && classes[\"align-items-xs-\".concat(String(alignItems))], alignContent !== 'stretch' && classes[\"align-content-xs-\".concat(String(alignContent))], (justify || justifyContent) !== 'flex-start' && classes[\"justify-content-xs-\".concat(String(justify || justifyContent))], xs !== false && classes[\"grid-xs-\".concat(String(xs))], sm !== false && classes[\"grid-sm-\".concat(String(sm))], md !== false && classes[\"grid-md-\".concat(String(md))], lg !== false && classes[\"grid-lg-\".concat(String(lg))], xl !== false && classes[\"grid-xl-\".concat(String(xl))]);\n  return /*#__PURE__*/React.createElement(Component, _extends({\n    className: className,\n    ref: ref\n  }, other));\n});\nprocess.env.NODE_ENV !== \"production\" ? Grid.propTypes = {\n  /**\n   * Defines the `align-content` style property.\n   * It's applied for all screen sizes.\n   */\n  alignContent: PropTypes.oneOf(['stretch', 'center', 'flex-start', 'flex-end', 'space-between', 'space-around']),\n\n  /**\n   * Defines the `align-items` style property.\n   * It's applied for all screen sizes.\n   */\n  alignItems: PropTypes.oneOf(['flex-start', 'center', 'flex-end', 'stretch', 'baseline']),\n\n  /**\n   * The content of the component.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object.isRequired,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The component used for the root node.\n   * Either a string to use a HTML element or a component.\n   */\n  component: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .elementType,\n\n  /**\n   * If `true`, the component will have the flex *container* behavior.\n   * You should be wrapping *items* with a *container*.\n   */\n  container: PropTypes.bool,\n\n  /**\n   * Defines the `flex-direction` style property.\n   * It is applied for all screen sizes.\n   */\n  direction: PropTypes.oneOf(['row', 'row-reverse', 'column', 'column-reverse']),\n\n  /**\n   * If `true`, the component will have the flex *item* behavior.\n   * You should be wrapping *items* with a *container*.\n   */\n  item: PropTypes.bool,\n\n  /**\n   * Defines the `justify-content` style property.\n   * It is applied for all screen sizes.\n   * @deprecated Use `justifyContent` instead, the prop was renamed\n   */\n  justify: deprecatedPropType(PropTypes.oneOf(['flex-start', 'center', 'flex-end', 'space-between', 'space-around', 'space-evenly']), 'Use `justifyContent` instead, the prop was renamed.'),\n\n  /**\n   * Defines the `justify-content` style property.\n   * It is applied for all screen sizes.\n   */\n  justifyContent: PropTypes.oneOf(['flex-start', 'center', 'flex-end', 'space-between', 'space-around', 'space-evenly']),\n\n  /**\n   * Defines the number of grids the component is going to use.\n   * It's applied for the `lg` breakpoint and wider screens if not overridden.\n   */\n  lg: PropTypes.oneOf([false, 'auto', true, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]),\n\n  /**\n   * Defines the number of grids the component is going to use.\n   * It's applied for the `md` breakpoint and wider screens if not overridden.\n   */\n  md: PropTypes.oneOf([false, 'auto', true, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]),\n\n  /**\n   * Defines the number of grids the component is going to use.\n   * It's applied for the `sm` breakpoint and wider screens if not overridden.\n   */\n  sm: PropTypes.oneOf([false, 'auto', true, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]),\n\n  /**\n   * Defines the space between the type `item` component.\n   * It can only be used on a type `container` component.\n   */\n  spacing: PropTypes.oneOf(SPACINGS),\n\n  /**\n   * Defines the `flex-wrap` style property.\n   * It's applied for all screen sizes.\n   */\n  wrap: PropTypes.oneOf(['nowrap', 'wrap', 'wrap-reverse']),\n\n  /**\n   * Defines the number of grids the component is going to use.\n   * It's applied for the `xl` breakpoint and wider screens.\n   */\n  xl: PropTypes.oneOf([false, 'auto', true, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]),\n\n  /**\n   * Defines the number of grids the component is going to use.\n   * It's applied for all the screen sizes with the lowest priority.\n   */\n  xs: PropTypes.oneOf([false, 'auto', true, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]),\n\n  /**\n   * If `true`, it sets `min-width: 0` on the item.\n   * Refer to the limitations section of the documentation to better understand the use case.\n   */\n  zeroMinWidth: PropTypes.bool\n} : void 0;\nvar StyledGrid = withStyles(styles, {\n  name: 'MuiGrid'\n})(Grid);\n\nif (process.env.NODE_ENV !== 'production') {\n  var requireProp = requirePropFactory('Grid');\n  StyledGrid.propTypes = _extends({}, StyledGrid.propTypes, {\n    alignContent: requireProp('container'),\n    alignItems: requireProp('container'),\n    direction: requireProp('container'),\n    justifyContent: requireProp('container'),\n    lg: requireProp('item'),\n    md: requireProp('item'),\n    sm: requireProp('item'),\n    spacing: requireProp('container'),\n    wrap: requireProp('container'),\n    xs: requireProp('item'),\n    zeroMinWidth: requireProp('item')\n  });\n}\n\nexport default StyledGrid;","/* eslint-disable no-restricted-syntax */\nexport default function getThemeProps(params) {\n  var theme = params.theme,\n      name = params.name,\n      props = params.props;\n\n  if (!theme || !theme.props || !theme.props[name]) {\n    return props;\n  } // Resolve default props, code borrow from React source.\n  // https://github.com/facebook/react/blob/15a8f031838a553e41c0b66eb1bcf1da8448104d/packages/react/src/ReactElement.js#L221\n\n\n  var defaultProps = theme.props[name];\n  var propName;\n\n  for (propName in defaultProps) {\n    if (props[propName] === undefined) {\n      props[propName] = defaultProps[propName];\n    }\n  }\n\n  return props;\n}","import _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport _extends from \"@babel/runtime/helpers/esm/extends\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport { chainPropTypes } from '@material-ui/utils';\nimport withStyles from '../styles/withStyles';\nexport var styles = function styles(theme) {\n  var elevations = {};\n  theme.shadows.forEach(function (shadow, index) {\n    elevations[\"elevation\".concat(index)] = {\n      boxShadow: shadow\n    };\n  });\n  return _extends({\n    /* Styles applied to the root element. */\n    root: {\n      backgroundColor: theme.palette.background.paper,\n      color: theme.palette.text.primary,\n      transition: theme.transitions.create('box-shadow')\n    },\n\n    /* Styles applied to the root element if `square={false}`. */\n    rounded: {\n      borderRadius: theme.shape.borderRadius\n    },\n\n    /* Styles applied to the root element if `variant=\"outlined\"`. */\n    outlined: {\n      border: \"1px solid \".concat(theme.palette.divider)\n    }\n  }, elevations);\n};\nvar Paper = /*#__PURE__*/React.forwardRef(function Paper(props, ref) {\n  var classes = props.classes,\n      className = props.className,\n      _props$component = props.component,\n      Component = _props$component === void 0 ? 'div' : _props$component,\n      _props$square = props.square,\n      square = _props$square === void 0 ? false : _props$square,\n      _props$elevation = props.elevation,\n      elevation = _props$elevation === void 0 ? 1 : _props$elevation,\n      _props$variant = props.variant,\n      variant = _props$variant === void 0 ? 'elevation' : _props$variant,\n      other = _objectWithoutProperties(props, [\"classes\", \"className\", \"component\", \"square\", \"elevation\", \"variant\"]);\n\n  return /*#__PURE__*/React.createElement(Component, _extends({\n    className: clsx(classes.root, className, variant === 'outlined' ? classes.outlined : classes[\"elevation\".concat(elevation)], !square && classes.rounded),\n    ref: ref\n  }, other));\n});\nprocess.env.NODE_ENV !== \"production\" ? Paper.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * The content of the component.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The component used for the root node.\n   * Either a string to use a HTML element or a component.\n   */\n  component: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .elementType,\n\n  /**\n   * Shadow depth, corresponds to `dp` in the spec.\n   * It accepts values between 0 and 24 inclusive.\n   */\n  elevation: chainPropTypes(PropTypes.number, function (props) {\n    var classes = props.classes,\n        elevation = props.elevation; // in case `withStyles` fails to inject we don't need this warning\n\n    if (classes === undefined) {\n      return null;\n    }\n\n    if (elevation != null && classes[\"elevation\".concat(elevation)] === undefined) {\n      return new Error(\"Material-UI: This elevation `\".concat(elevation, \"` is not implemented.\"));\n    }\n\n    return null;\n  }),\n\n  /**\n   * If `true`, rounded corners are disabled.\n   */\n  square: PropTypes.bool,\n\n  /**\n   * The variant to use.\n   */\n  variant: PropTypes.oneOf(['elevation', 'outlined'])\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiPaper'\n})(Paper);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport withStyles from '../styles/withStyles';\nexport var styles = function styles(theme) {\n  return {\n    /* Styles applied to the root element. */\n    root: {\n      display: 'flex',\n      padding: theme.spacing(1, 2, 2)\n    }\n  };\n};\nvar AccordionDetails = /*#__PURE__*/React.forwardRef(function AccordionDetails(props, ref) {\n  var classes = props.classes,\n      className = props.className,\n      other = _objectWithoutProperties(props, [\"classes\", \"className\"]);\n\n  return /*#__PURE__*/React.createElement(\"div\", _extends({\n    className: clsx(classes.root, className),\n    ref: ref\n  }, other));\n});\nprocess.env.NODE_ENV !== \"production\" ? AccordionDetails.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * The content of the accordion details.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiAccordionDetails'\n})(AccordionDetails);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport { chainPropTypes } from '@material-ui/utils';\nimport withStyles from '../styles/withStyles';\nimport capitalize from '../utils/capitalize';\nvar SIZE = 44;\nexport var styles = function styles(theme) {\n  return {\n    /* Styles applied to the root element. */\n    root: {\n      display: 'inline-block'\n    },\n\n    /* Styles applied to the root element if `variant=\"static\"`. */\n    static: {\n      transition: theme.transitions.create('transform')\n    },\n\n    /* Styles applied to the root element if `variant=\"indeterminate\"`. */\n    indeterminate: {\n      animation: '$circular-rotate 1.4s linear infinite'\n    },\n\n    /* Styles applied to the root element if `variant=\"determinate\"`. */\n    determinate: {\n      transition: theme.transitions.create('transform')\n    },\n\n    /* Styles applied to the root element if `color=\"primary\"`. */\n    colorPrimary: {\n      color: theme.palette.primary.main\n    },\n\n    /* Styles applied to the root element if `color=\"secondary\"`. */\n    colorSecondary: {\n      color: theme.palette.secondary.main\n    },\n\n    /* Styles applied to the `svg` element. */\n    svg: {\n      display: 'block' // Keeps the progress centered\n\n    },\n\n    /* Styles applied to the `circle` svg path. */\n    circle: {\n      stroke: 'currentColor' // Use butt to follow the specification, by chance, it's already the default CSS value.\n      // strokeLinecap: 'butt',\n\n    },\n\n    /* Styles applied to the `circle` svg path if `variant=\"static\"`. */\n    circleStatic: {\n      transition: theme.transitions.create('stroke-dashoffset')\n    },\n\n    /* Styles applied to the `circle` svg path if `variant=\"indeterminate\"`. */\n    circleIndeterminate: {\n      animation: '$circular-dash 1.4s ease-in-out infinite',\n      // Some default value that looks fine waiting for the animation to kicks in.\n      strokeDasharray: '80px, 200px',\n      strokeDashoffset: '0px' // Add the unit to fix a Edge 16 and below bug.\n\n    },\n\n    /* Styles applied to the `circle` svg path if `variant=\"determinate\"`. */\n    circleDeterminate: {\n      transition: theme.transitions.create('stroke-dashoffset')\n    },\n    '@keyframes circular-rotate': {\n      '0%': {\n        // Fix IE 11 wobbly\n        transformOrigin: '50% 50%'\n      },\n      '100%': {\n        transform: 'rotate(360deg)'\n      }\n    },\n    '@keyframes circular-dash': {\n      '0%': {\n        strokeDasharray: '1px, 200px',\n        strokeDashoffset: '0px'\n      },\n      '50%': {\n        strokeDasharray: '100px, 200px',\n        strokeDashoffset: '-15px'\n      },\n      '100%': {\n        strokeDasharray: '100px, 200px',\n        strokeDashoffset: '-125px'\n      }\n    },\n\n    /* Styles applied to the `circle` svg path if `disableShrink={true}`. */\n    circleDisableShrink: {\n      animation: 'none'\n    }\n  };\n};\n/**\n * ## ARIA\n *\n * If the progress bar is describing the loading progress of a particular region of a page,\n * you should use `aria-describedby` to point to the progress bar, and set the `aria-busy`\n * attribute to `true` on that region until it has finished loading.\n */\n\nvar CircularProgress = /*#__PURE__*/React.forwardRef(function CircularProgress(props, ref) {\n  var classes = props.classes,\n      className = props.className,\n      _props$color = props.color,\n      color = _props$color === void 0 ? 'primary' : _props$color,\n      _props$disableShrink = props.disableShrink,\n      disableShrink = _props$disableShrink === void 0 ? false : _props$disableShrink,\n      _props$size = props.size,\n      size = _props$size === void 0 ? 40 : _props$size,\n      style = props.style,\n      _props$thickness = props.thickness,\n      thickness = _props$thickness === void 0 ? 3.6 : _props$thickness,\n      _props$value = props.value,\n      value = _props$value === void 0 ? 0 : _props$value,\n      _props$variant = props.variant,\n      variant = _props$variant === void 0 ? 'indeterminate' : _props$variant,\n      other = _objectWithoutProperties(props, [\"classes\", \"className\", \"color\", \"disableShrink\", \"size\", \"style\", \"thickness\", \"value\", \"variant\"]);\n\n  var circleStyle = {};\n  var rootStyle = {};\n  var rootProps = {};\n\n  if (variant === 'determinate' || variant === 'static') {\n    var circumference = 2 * Math.PI * ((SIZE - thickness) / 2);\n    circleStyle.strokeDasharray = circumference.toFixed(3);\n    rootProps['aria-valuenow'] = Math.round(value);\n    circleStyle.strokeDashoffset = \"\".concat(((100 - value) / 100 * circumference).toFixed(3), \"px\");\n    rootStyle.transform = 'rotate(-90deg)';\n  }\n\n  return /*#__PURE__*/React.createElement(\"div\", _extends({\n    className: clsx(classes.root, className, color !== 'inherit' && classes[\"color\".concat(capitalize(color))], {\n      'determinate': classes.determinate,\n      'indeterminate': classes.indeterminate,\n      'static': classes.static\n    }[variant]),\n    style: _extends({\n      width: size,\n      height: size\n    }, rootStyle, style),\n    ref: ref,\n    role: \"progressbar\"\n  }, rootProps, other), /*#__PURE__*/React.createElement(\"svg\", {\n    className: classes.svg,\n    viewBox: \"\".concat(SIZE / 2, \" \").concat(SIZE / 2, \" \").concat(SIZE, \" \").concat(SIZE)\n  }, /*#__PURE__*/React.createElement(\"circle\", {\n    className: clsx(classes.circle, disableShrink && classes.circleDisableShrink, {\n      'determinate': classes.circleDeterminate,\n      'indeterminate': classes.circleIndeterminate,\n      'static': classes.circleStatic\n    }[variant]),\n    style: circleStyle,\n    cx: SIZE,\n    cy: SIZE,\n    r: (SIZE - thickness) / 2,\n    fill: \"none\",\n    strokeWidth: thickness\n  })));\n});\nprocess.env.NODE_ENV !== \"production\" ? CircularProgress.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The color of the component. It supports those theme colors that make sense for this component.\n   */\n  color: PropTypes.oneOf(['inherit', 'primary', 'secondary']),\n\n  /**\n   * If `true`, the shrink animation is disabled.\n   * This only works if variant is `indeterminate`.\n   */\n  disableShrink: chainPropTypes(PropTypes.bool, function (props) {\n    if (props.disableShrink && props.variant && props.variant !== 'indeterminate') {\n      return new Error('Material-UI: You have provided the `disableShrink` prop ' + 'with a variant other than `indeterminate`. This will have no effect.');\n    }\n\n    return null;\n  }),\n\n  /**\n   * The size of the circle.\n   * If using a number, the pixel unit is assumed.\n   * If using a string, you need to provide the CSS unit, e.g '3rem'.\n   */\n  size: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * @ignore\n   */\n  style: PropTypes.object,\n\n  /**\n   * The thickness of the circle.\n   */\n  thickness: PropTypes.number,\n\n  /**\n   * The value of the progress indicator for the determinate variant.\n   * Value between 0 and 100.\n   */\n  value: PropTypes.number,\n\n  /**\n   * The variant to use.\n   * Use indeterminate when there is no progress value.\n   */\n  variant: chainPropTypes(PropTypes.oneOf(['determinate', 'indeterminate', 'static']), function (props) {\n    var variant = props.variant;\n\n    if (variant === 'static') {\n      throw new Error('Material-UI: `variant=\"static\"` was deprecated. Use `variant=\"determinate\"` instead.');\n    }\n\n    return null;\n  })\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiCircularProgress',\n  flip: false\n})(CircularProgress);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport withStyles from '../styles/withStyles';\nimport { exactProp } from '@material-ui/utils';\nexport var html = {\n  WebkitFontSmoothing: 'antialiased',\n  // Antialiasing.\n  MozOsxFontSmoothing: 'grayscale',\n  // Antialiasing.\n  // Change from `box-sizing: content-box` so that `width`\n  // is not affected by `padding` or `border`.\n  boxSizing: 'border-box'\n};\nexport var body = function body(theme) {\n  return _extends({\n    color: theme.palette.text.primary\n  }, theme.typography.body2, {\n    backgroundColor: theme.palette.background.default,\n    '@media print': {\n      // Save printer ink.\n      backgroundColor: theme.palette.common.white\n    }\n  });\n};\nexport var styles = function styles(theme) {\n  return {\n    '@global': {\n      html: html,\n      '*, *::before, *::after': {\n        boxSizing: 'inherit'\n      },\n      'strong, b': {\n        fontWeight: theme.typography.fontWeightBold\n      },\n      body: _extends({\n        margin: 0\n      }, body(theme), {\n        // Add support for document.body.requestFullScreen().\n        // Other elements, if background transparent, are not supported.\n        '&::backdrop': {\n          backgroundColor: theme.palette.background.default\n        }\n      })\n    }\n  };\n};\n/**\n * Kickstart an elegant, consistent, and simple baseline to build upon.\n */\n\nfunction CssBaseline(props) {\n  /* eslint-disable no-unused-vars */\n  var _props$children = props.children,\n      children = _props$children === void 0 ? null : _props$children,\n      classes = props.classes;\n  /* eslint-enable no-unused-vars */\n\n  return /*#__PURE__*/React.createElement(React.Fragment, null, children);\n}\n\nprocess.env.NODE_ENV !== \"production\" ? CssBaseline.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * You can wrap a node.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object\n} : void 0;\n\nif (process.env.NODE_ENV !== 'production') {\n  // eslint-disable-next-line\n  CssBaseline['propTypes' + ''] = exactProp(CssBaseline.propTypes);\n}\n\nexport default withStyles(styles, {\n  name: 'MuiCssBaseline'\n})(CssBaseline);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport capitalize from '../utils/capitalize';\nimport withStyles from '../styles/withStyles';\nimport { elementTypeAcceptingRef } from '@material-ui/utils';\nimport useIsFocusVisible from '../utils/useIsFocusVisible';\nimport useForkRef from '../utils/useForkRef';\nimport Typography from '../Typography';\nexport var styles = {\n  /* Styles applied to the root element. */\n  root: {},\n\n  /* Styles applied to the root element if `underline=\"none\"`. */\n  underlineNone: {\n    textDecoration: 'none'\n  },\n\n  /* Styles applied to the root element if `underline=\"hover\"`. */\n  underlineHover: {\n    textDecoration: 'none',\n    '&:hover': {\n      textDecoration: 'underline'\n    }\n  },\n\n  /* Styles applied to the root element if `underline=\"always\"`. */\n  underlineAlways: {\n    textDecoration: 'underline'\n  },\n  // Same reset as ButtonBase.root\n\n  /* Styles applied to the root element if `component=\"button\"`. */\n  button: {\n    position: 'relative',\n    WebkitTapHighlightColor: 'transparent',\n    backgroundColor: 'transparent',\n    // Reset default value\n    // We disable the focus ring for mouse, touch and keyboard users.\n    outline: 0,\n    border: 0,\n    margin: 0,\n    // Remove the margin in Safari\n    borderRadius: 0,\n    padding: 0,\n    // Remove the padding in Firefox\n    cursor: 'pointer',\n    userSelect: 'none',\n    verticalAlign: 'middle',\n    '-moz-appearance': 'none',\n    // Reset\n    '-webkit-appearance': 'none',\n    // Reset\n    '&::-moz-focus-inner': {\n      borderStyle: 'none' // Remove Firefox dotted outline.\n\n    },\n    '&$focusVisible': {\n      outline: 'auto'\n    }\n  },\n\n  /* Pseudo-class applied to the root element if the link is keyboard focused. */\n  focusVisible: {}\n};\nvar Link = /*#__PURE__*/React.forwardRef(function Link(props, ref) {\n  var classes = props.classes,\n      className = props.className,\n      _props$color = props.color,\n      color = _props$color === void 0 ? 'primary' : _props$color,\n      _props$component = props.component,\n      component = _props$component === void 0 ? 'a' : _props$component,\n      onBlur = props.onBlur,\n      onFocus = props.onFocus,\n      TypographyClasses = props.TypographyClasses,\n      _props$underline = props.underline,\n      underline = _props$underline === void 0 ? 'hover' : _props$underline,\n      _props$variant = props.variant,\n      variant = _props$variant === void 0 ? 'inherit' : _props$variant,\n      other = _objectWithoutProperties(props, [\"classes\", \"className\", \"color\", \"component\", \"onBlur\", \"onFocus\", \"TypographyClasses\", \"underline\", \"variant\"]);\n\n  var _useIsFocusVisible = useIsFocusVisible(),\n      isFocusVisible = _useIsFocusVisible.isFocusVisible,\n      onBlurVisible = _useIsFocusVisible.onBlurVisible,\n      focusVisibleRef = _useIsFocusVisible.ref;\n\n  var _React$useState = React.useState(false),\n      focusVisible = _React$useState[0],\n      setFocusVisible = _React$useState[1];\n\n  var handlerRef = useForkRef(ref, focusVisibleRef);\n\n  var handleBlur = function handleBlur(event) {\n    if (focusVisible) {\n      onBlurVisible();\n      setFocusVisible(false);\n    }\n\n    if (onBlur) {\n      onBlur(event);\n    }\n  };\n\n  var handleFocus = function handleFocus(event) {\n    if (isFocusVisible(event)) {\n      setFocusVisible(true);\n    }\n\n    if (onFocus) {\n      onFocus(event);\n    }\n  };\n\n  return /*#__PURE__*/React.createElement(Typography, _extends({\n    className: clsx(classes.root, classes[\"underline\".concat(capitalize(underline))], className, focusVisible && classes.focusVisible, component === 'button' && classes.button),\n    classes: TypographyClasses,\n    color: color,\n    component: component,\n    onBlur: handleBlur,\n    onFocus: handleFocus,\n    ref: handlerRef,\n    variant: variant\n  }, other));\n});\nprocess.env.NODE_ENV !== \"production\" ? Link.propTypes = {\n  /**\n   * The content of the link.\n   */\n  children: PropTypes.node.isRequired,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object.isRequired,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The color of the link.\n   */\n  color: PropTypes.oneOf(['initial', 'inherit', 'primary', 'secondary', 'textPrimary', 'textSecondary', 'error']),\n\n  /**\n   * The component used for the root node.\n   * Either a string to use a HTML element or a component.\n   */\n  component: elementTypeAcceptingRef,\n\n  /**\n   * @ignore\n   */\n  onBlur: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onFocus: PropTypes.func,\n\n  /**\n   * `classes` prop applied to the [`Typography`](/api/typography/) element.\n   */\n  TypographyClasses: PropTypes.object,\n\n  /**\n   * Controls when the link should have an underline.\n   */\n  underline: PropTypes.oneOf(['none', 'hover', 'always']),\n\n  /**\n   * Applies the theme typography styles.\n   */\n  variant: PropTypes.string\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiLink'\n})(Link);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _slicedToArray from \"@babel/runtime/helpers/esm/slicedToArray\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport { Transition } from 'react-transition-group';\nimport useTheme from '../styles/useTheme';\nimport { reflow, getTransitionProps } from '../transitions/utils';\nimport useForkRef from '../utils/useForkRef';\n\nfunction getScale(value) {\n  return \"scale(\".concat(value, \", \").concat(Math.pow(value, 2), \")\");\n}\n\nvar styles = {\n  entering: {\n    opacity: 1,\n    transform: getScale(1)\n  },\n  entered: {\n    opacity: 1,\n    transform: 'none'\n  }\n};\n/**\n * The Grow transition is used by the [Tooltip](/components/tooltips/) and\n * [Popover](/components/popover/) components.\n * It uses [react-transition-group](https://github.com/reactjs/react-transition-group) internally.\n */\n\nvar Grow = /*#__PURE__*/React.forwardRef(function Grow(props, ref) {\n  var children = props.children,\n      _props$disableStrictM = props.disableStrictModeCompat,\n      disableStrictModeCompat = _props$disableStrictM === void 0 ? false : _props$disableStrictM,\n      inProp = props.in,\n      onEnter = props.onEnter,\n      onEntered = props.onEntered,\n      onEntering = props.onEntering,\n      onExit = props.onExit,\n      onExited = props.onExited,\n      onExiting = props.onExiting,\n      style = props.style,\n      _props$timeout = props.timeout,\n      timeout = _props$timeout === void 0 ? 'auto' : _props$timeout,\n      _props$TransitionComp = props.TransitionComponent,\n      TransitionComponent = _props$TransitionComp === void 0 ? Transition : _props$TransitionComp,\n      other = _objectWithoutProperties(props, [\"children\", \"disableStrictModeCompat\", \"in\", \"onEnter\", \"onEntered\", \"onEntering\", \"onExit\", \"onExited\", \"onExiting\", \"style\", \"timeout\", \"TransitionComponent\"]);\n\n  var timer = React.useRef();\n  var autoTimeout = React.useRef();\n  var theme = useTheme();\n  var enableStrictModeCompat = theme.unstable_strictMode && !disableStrictModeCompat;\n  var nodeRef = React.useRef(null);\n  var foreignRef = useForkRef(children.ref, ref);\n  var handleRef = useForkRef(enableStrictModeCompat ? nodeRef : undefined, foreignRef);\n\n  var normalizedTransitionCallback = function normalizedTransitionCallback(callback) {\n    return function (nodeOrAppearing, maybeAppearing) {\n      if (callback) {\n        var _ref = enableStrictModeCompat ? [nodeRef.current, nodeOrAppearing] : [nodeOrAppearing, maybeAppearing],\n            _ref2 = _slicedToArray(_ref, 2),\n            node = _ref2[0],\n            isAppearing = _ref2[1]; // onEnterXxx and onExitXxx callbacks have a different arguments.length value.\n\n\n        if (isAppearing === undefined) {\n          callback(node);\n        } else {\n          callback(node, isAppearing);\n        }\n      }\n    };\n  };\n\n  var handleEntering = normalizedTransitionCallback(onEntering);\n  var handleEnter = normalizedTransitionCallback(function (node, isAppearing) {\n    reflow(node); // So the animation always start from the start.\n\n    var _getTransitionProps = getTransitionProps({\n      style: style,\n      timeout: timeout\n    }, {\n      mode: 'enter'\n    }),\n        transitionDuration = _getTransitionProps.duration,\n        delay = _getTransitionProps.delay;\n\n    var duration;\n\n    if (timeout === 'auto') {\n      duration = theme.transitions.getAutoHeightDuration(node.clientHeight);\n      autoTimeout.current = duration;\n    } else {\n      duration = transitionDuration;\n    }\n\n    node.style.transition = [theme.transitions.create('opacity', {\n      duration: duration,\n      delay: delay\n    }), theme.transitions.create('transform', {\n      duration: duration * 0.666,\n      delay: delay\n    })].join(',');\n\n    if (onEnter) {\n      onEnter(node, isAppearing);\n    }\n  });\n  var handleEntered = normalizedTransitionCallback(onEntered);\n  var handleExiting = normalizedTransitionCallback(onExiting);\n  var handleExit = normalizedTransitionCallback(function (node) {\n    var _getTransitionProps2 = getTransitionProps({\n      style: style,\n      timeout: timeout\n    }, {\n      mode: 'exit'\n    }),\n        transitionDuration = _getTransitionProps2.duration,\n        delay = _getTransitionProps2.delay;\n\n    var duration;\n\n    if (timeout === 'auto') {\n      duration = theme.transitions.getAutoHeightDuration(node.clientHeight);\n      autoTimeout.current = duration;\n    } else {\n      duration = transitionDuration;\n    }\n\n    node.style.transition = [theme.transitions.create('opacity', {\n      duration: duration,\n      delay: delay\n    }), theme.transitions.create('transform', {\n      duration: duration * 0.666,\n      delay: delay || duration * 0.333\n    })].join(',');\n    node.style.opacity = '0';\n    node.style.transform = getScale(0.75);\n\n    if (onExit) {\n      onExit(node);\n    }\n  });\n  var handleExited = normalizedTransitionCallback(onExited);\n\n  var addEndListener = function addEndListener(nodeOrNext, maybeNext) {\n    var next = enableStrictModeCompat ? nodeOrNext : maybeNext;\n\n    if (timeout === 'auto') {\n      timer.current = setTimeout(next, autoTimeout.current || 0);\n    }\n  };\n\n  React.useEffect(function () {\n    return function () {\n      clearTimeout(timer.current);\n    };\n  }, []);\n  return /*#__PURE__*/React.createElement(TransitionComponent, _extends({\n    appear: true,\n    in: inProp,\n    nodeRef: enableStrictModeCompat ? nodeRef : undefined,\n    onEnter: handleEnter,\n    onEntered: handleEntered,\n    onEntering: handleEntering,\n    onExit: handleExit,\n    onExited: handleExited,\n    onExiting: handleExiting,\n    addEndListener: addEndListener,\n    timeout: timeout === 'auto' ? null : timeout\n  }, other), function (state, childProps) {\n    return /*#__PURE__*/React.cloneElement(children, _extends({\n      style: _extends({\n        opacity: 0,\n        transform: getScale(0.75),\n        visibility: state === 'exited' && !inProp ? 'hidden' : undefined\n      }, styles[state], style, children.props.style),\n      ref: handleRef\n    }, childProps));\n  });\n});\nprocess.env.NODE_ENV !== \"production\" ? Grow.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * A single child content element.\n   */\n  children: PropTypes.element,\n\n  /**\n   * Enable this prop if you encounter 'Function components cannot be given refs',\n   * use `unstable_createStrictModeTheme`,\n   * and can't forward the ref in the child component.\n   */\n  disableStrictModeCompat: PropTypes.bool,\n\n  /**\n   * If `true`, show the component; triggers the enter or exit animation.\n   */\n  in: PropTypes.bool,\n\n  /**\n   * @ignore\n   */\n  onEnter: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onEntered: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onEntering: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onExit: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onExited: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onExiting: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  style: PropTypes.object,\n\n  /**\n   * The duration for the transition, in milliseconds.\n   * You may specify a single timeout for all transitions, or individually with an object.\n   *\n   * Set to 'auto' to automatically calculate transition time based on height.\n   */\n  timeout: PropTypes.oneOfType([PropTypes.oneOf(['auto']), PropTypes.number, PropTypes.shape({\n    appear: PropTypes.number,\n    enter: PropTypes.number,\n    exit: PropTypes.number\n  })])\n} : void 0;\nGrow.muiSupportAuto = true;\nexport default Grow;","import * as React from 'react';\nimport * as ReactDOM from 'react-dom';\nimport PropTypes from 'prop-types';\nimport { exactProp, HTMLElementType } from '@material-ui/utils';\nimport deprecatedPropType from '../utils/deprecatedPropType';\nimport setRef from '../utils/setRef';\nimport useForkRef from '../utils/useForkRef';\n\nfunction getContainer(container) {\n  container = typeof container === 'function' ? container() : container; // #StrictMode ready\n\n  return ReactDOM.findDOMNode(container);\n}\n\nvar useEnhancedEffect = typeof window !== 'undefined' ? React.useLayoutEffect : React.useEffect;\n/**\n * Portals provide a first-class way to render children into a DOM node\n * that exists outside the DOM hierarchy of the parent component.\n */\n\nvar Portal = /*#__PURE__*/React.forwardRef(function Portal(props, ref) {\n  var children = props.children,\n      container = props.container,\n      _props$disablePortal = props.disablePortal,\n      disablePortal = _props$disablePortal === void 0 ? false : _props$disablePortal,\n      onRendered = props.onRendered;\n\n  var _React$useState = React.useState(null),\n      mountNode = _React$useState[0],\n      setMountNode = _React$useState[1];\n\n  var handleRef = useForkRef( /*#__PURE__*/React.isValidElement(children) ? children.ref : null, ref);\n  useEnhancedEffect(function () {\n    if (!disablePortal) {\n      setMountNode(getContainer(container) || document.body);\n    }\n  }, [container, disablePortal]);\n  useEnhancedEffect(function () {\n    if (mountNode && !disablePortal) {\n      setRef(ref, mountNode);\n      return function () {\n        setRef(ref, null);\n      };\n    }\n\n    return undefined;\n  }, [ref, mountNode, disablePortal]);\n  useEnhancedEffect(function () {\n    if (onRendered && (mountNode || disablePortal)) {\n      onRendered();\n    }\n  }, [onRendered, mountNode, disablePortal]);\n\n  if (disablePortal) {\n    if ( /*#__PURE__*/React.isValidElement(children)) {\n      return /*#__PURE__*/React.cloneElement(children, {\n        ref: handleRef\n      });\n    }\n\n    return children;\n  }\n\n  return mountNode ? /*#__PURE__*/ReactDOM.createPortal(children, mountNode) : mountNode;\n});\nprocess.env.NODE_ENV !== \"production\" ? Portal.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * The children to render into the `container`.\n   */\n  children: PropTypes.node,\n\n  /**\n   * A HTML element, component instance, or function that returns either.\n   * The `container` will have the portal children appended to it.\n   *\n   * By default, it uses the body of the top-level document object,\n   * so it's simply `document.body` most of the time.\n   */\n  container: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .oneOfType([HTMLElementType, PropTypes.instanceOf(React.Component), PropTypes.func]),\n\n  /**\n   * Disable the portal behavior.\n   * The children stay within it's parent DOM hierarchy.\n   */\n  disablePortal: PropTypes.bool,\n\n  /**\n   * Callback fired once the children has been mounted into the `container`.\n   *\n   * This prop will be removed in v5, the ref can be used instead.\n   * @deprecated Use the ref instead.\n   */\n  onRendered: deprecatedPropType(PropTypes.func, 'Use the ref instead.')\n} : void 0;\n\nif (process.env.NODE_ENV !== 'production') {\n  // eslint-disable-next-line\n  Portal['propTypes' + ''] = exactProp(Portal.propTypes);\n}\n\nexport default Portal;","import _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport _extends from \"@babel/runtime/helpers/esm/extends\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport withStyles from '../styles/withStyles';\nimport { alpha } from '../styles/colorManipulator';\nimport ButtonBase from '../ButtonBase';\nimport capitalize from '../utils/capitalize';\nexport var styles = function styles(theme) {\n  return {\n    /* Styles applied to the root element. */\n    root: _extends({}, theme.typography.button, {\n      boxSizing: 'border-box',\n      minWidth: 64,\n      padding: '6px 16px',\n      borderRadius: theme.shape.borderRadius,\n      color: theme.palette.text.primary,\n      transition: theme.transitions.create(['background-color', 'box-shadow', 'border'], {\n        duration: theme.transitions.duration.short\n      }),\n      '&:hover': {\n        textDecoration: 'none',\n        backgroundColor: alpha(theme.palette.text.primary, theme.palette.action.hoverOpacity),\n        // Reset on touch devices, it doesn't add specificity\n        '@media (hover: none)': {\n          backgroundColor: 'transparent'\n        },\n        '&$disabled': {\n          backgroundColor: 'transparent'\n        }\n      },\n      '&$disabled': {\n        color: theme.palette.action.disabled\n      }\n    }),\n\n    /* Styles applied to the span element that wraps the children. */\n    label: {\n      width: '100%',\n      // Ensure the correct width for iOS Safari\n      display: 'inherit',\n      alignItems: 'inherit',\n      justifyContent: 'inherit'\n    },\n\n    /* Styles applied to the root element if `variant=\"text\"`. */\n    text: {\n      padding: '6px 8px'\n    },\n\n    /* Styles applied to the root element if `variant=\"text\"` and `color=\"primary\"`. */\n    textPrimary: {\n      color: theme.palette.primary.main,\n      '&:hover': {\n        backgroundColor: alpha(theme.palette.primary.main, theme.palette.action.hoverOpacity),\n        // Reset on touch devices, it doesn't add specificity\n        '@media (hover: none)': {\n          backgroundColor: 'transparent'\n        }\n      }\n    },\n\n    /* Styles applied to the root element if `variant=\"text\"` and `color=\"secondary\"`. */\n    textSecondary: {\n      color: theme.palette.secondary.main,\n      '&:hover': {\n        backgroundColor: alpha(theme.palette.secondary.main, theme.palette.action.hoverOpacity),\n        // Reset on touch devices, it doesn't add specificity\n        '@media (hover: none)': {\n          backgroundColor: 'transparent'\n        }\n      }\n    },\n\n    /* Styles applied to the root element if `variant=\"outlined\"`. */\n    outlined: {\n      padding: '5px 15px',\n      border: \"1px solid \".concat(theme.palette.type === 'light' ? 'rgba(0, 0, 0, 0.23)' : 'rgba(255, 255, 255, 0.23)'),\n      '&$disabled': {\n        border: \"1px solid \".concat(theme.palette.action.disabledBackground)\n      }\n    },\n\n    /* Styles applied to the root element if `variant=\"outlined\"` and `color=\"primary\"`. */\n    outlinedPrimary: {\n      color: theme.palette.primary.main,\n      border: \"1px solid \".concat(alpha(theme.palette.primary.main, 0.5)),\n      '&:hover': {\n        border: \"1px solid \".concat(theme.palette.primary.main),\n        backgroundColor: alpha(theme.palette.primary.main, theme.palette.action.hoverOpacity),\n        // Reset on touch devices, it doesn't add specificity\n        '@media (hover: none)': {\n          backgroundColor: 'transparent'\n        }\n      }\n    },\n\n    /* Styles applied to the root element if `variant=\"outlined\"` and `color=\"secondary\"`. */\n    outlinedSecondary: {\n      color: theme.palette.secondary.main,\n      border: \"1px solid \".concat(alpha(theme.palette.secondary.main, 0.5)),\n      '&:hover': {\n        border: \"1px solid \".concat(theme.palette.secondary.main),\n        backgroundColor: alpha(theme.palette.secondary.main, theme.palette.action.hoverOpacity),\n        // Reset on touch devices, it doesn't add specificity\n        '@media (hover: none)': {\n          backgroundColor: 'transparent'\n        }\n      },\n      '&$disabled': {\n        border: \"1px solid \".concat(theme.palette.action.disabled)\n      }\n    },\n\n    /* Styles applied to the root element if `variant=\"contained\"`. */\n    contained: {\n      color: theme.palette.getContrastText(theme.palette.grey[300]),\n      backgroundColor: theme.palette.grey[300],\n      boxShadow: theme.shadows[2],\n      '&:hover': {\n        backgroundColor: theme.palette.grey.A100,\n        boxShadow: theme.shadows[4],\n        // Reset on touch devices, it doesn't add specificity\n        '@media (hover: none)': {\n          boxShadow: theme.shadows[2],\n          backgroundColor: theme.palette.grey[300]\n        },\n        '&$disabled': {\n          backgroundColor: theme.palette.action.disabledBackground\n        }\n      },\n      '&$focusVisible': {\n        boxShadow: theme.shadows[6]\n      },\n      '&:active': {\n        boxShadow: theme.shadows[8]\n      },\n      '&$disabled': {\n        color: theme.palette.action.disabled,\n        boxShadow: theme.shadows[0],\n        backgroundColor: theme.palette.action.disabledBackground\n      }\n    },\n\n    /* Styles applied to the root element if `variant=\"contained\"` and `color=\"primary\"`. */\n    containedPrimary: {\n      color: theme.palette.primary.contrastText,\n      backgroundColor: theme.palette.primary.main,\n      '&:hover': {\n        backgroundColor: theme.palette.primary.dark,\n        // Reset on touch devices, it doesn't add specificity\n        '@media (hover: none)': {\n          backgroundColor: theme.palette.primary.main\n        }\n      }\n    },\n\n    /* Styles applied to the root element if `variant=\"contained\"` and `color=\"secondary\"`. */\n    containedSecondary: {\n      color: theme.palette.secondary.contrastText,\n      backgroundColor: theme.palette.secondary.main,\n      '&:hover': {\n        backgroundColor: theme.palette.secondary.dark,\n        // Reset on touch devices, it doesn't add specificity\n        '@media (hover: none)': {\n          backgroundColor: theme.palette.secondary.main\n        }\n      }\n    },\n\n    /* Styles applied to the root element if `disableElevation={true}`. */\n    disableElevation: {\n      boxShadow: 'none',\n      '&:hover': {\n        boxShadow: 'none'\n      },\n      '&$focusVisible': {\n        boxShadow: 'none'\n      },\n      '&:active': {\n        boxShadow: 'none'\n      },\n      '&$disabled': {\n        boxShadow: 'none'\n      }\n    },\n\n    /* Pseudo-class applied to the ButtonBase root element if the button is keyboard focused. */\n    focusVisible: {},\n\n    /* Pseudo-class applied to the root element if `disabled={true}`. */\n    disabled: {},\n\n    /* Styles applied to the root element if `color=\"inherit\"`. */\n    colorInherit: {\n      color: 'inherit',\n      borderColor: 'currentColor'\n    },\n\n    /* Styles applied to the root element if `size=\"small\"` and `variant=\"text\"`. */\n    textSizeSmall: {\n      padding: '4px 5px',\n      fontSize: theme.typography.pxToRem(13)\n    },\n\n    /* Styles applied to the root element if `size=\"large\"` and `variant=\"text\"`. */\n    textSizeLarge: {\n      padding: '8px 11px',\n      fontSize: theme.typography.pxToRem(15)\n    },\n\n    /* Styles applied to the root element if `size=\"small\"` and `variant=\"outlined\"`. */\n    outlinedSizeSmall: {\n      padding: '3px 9px',\n      fontSize: theme.typography.pxToRem(13)\n    },\n\n    /* Styles applied to the root element if `size=\"large\"` and `variant=\"outlined\"`. */\n    outlinedSizeLarge: {\n      padding: '7px 21px',\n      fontSize: theme.typography.pxToRem(15)\n    },\n\n    /* Styles applied to the root element if `size=\"small\"` and `variant=\"contained\"`. */\n    containedSizeSmall: {\n      padding: '4px 10px',\n      fontSize: theme.typography.pxToRem(13)\n    },\n\n    /* Styles applied to the root element if `size=\"large\"` and `variant=\"contained\"`. */\n    containedSizeLarge: {\n      padding: '8px 22px',\n      fontSize: theme.typography.pxToRem(15)\n    },\n\n    /* Styles applied to the root element if `size=\"small\"`. */\n    sizeSmall: {},\n\n    /* Styles applied to the root element if `size=\"large\"`. */\n    sizeLarge: {},\n\n    /* Styles applied to the root element if `fullWidth={true}`. */\n    fullWidth: {\n      width: '100%'\n    },\n\n    /* Styles applied to the startIcon element if supplied. */\n    startIcon: {\n      display: 'inherit',\n      marginRight: 8,\n      marginLeft: -4,\n      '&$iconSizeSmall': {\n        marginLeft: -2\n      }\n    },\n\n    /* Styles applied to the endIcon element if supplied. */\n    endIcon: {\n      display: 'inherit',\n      marginRight: -4,\n      marginLeft: 8,\n      '&$iconSizeSmall': {\n        marginRight: -2\n      }\n    },\n\n    /* Styles applied to the icon element if supplied and `size=\"small\"`. */\n    iconSizeSmall: {\n      '& > *:first-child': {\n        fontSize: 18\n      }\n    },\n\n    /* Styles applied to the icon element if supplied and `size=\"medium\"`. */\n    iconSizeMedium: {\n      '& > *:first-child': {\n        fontSize: 20\n      }\n    },\n\n    /* Styles applied to the icon element if supplied and `size=\"large\"`. */\n    iconSizeLarge: {\n      '& > *:first-child': {\n        fontSize: 22\n      }\n    }\n  };\n};\nvar Button = /*#__PURE__*/React.forwardRef(function Button(props, ref) {\n  var children = props.children,\n      classes = props.classes,\n      className = props.className,\n      _props$color = props.color,\n      color = _props$color === void 0 ? 'default' : _props$color,\n      _props$component = props.component,\n      component = _props$component === void 0 ? 'button' : _props$component,\n      _props$disabled = props.disabled,\n      disabled = _props$disabled === void 0 ? false : _props$disabled,\n      _props$disableElevati = props.disableElevation,\n      disableElevation = _props$disableElevati === void 0 ? false : _props$disableElevati,\n      _props$disableFocusRi = props.disableFocusRipple,\n      disableFocusRipple = _props$disableFocusRi === void 0 ? false : _props$disableFocusRi,\n      endIconProp = props.endIcon,\n      focusVisibleClassName = props.focusVisibleClassName,\n      _props$fullWidth = props.fullWidth,\n      fullWidth = _props$fullWidth === void 0 ? false : _props$fullWidth,\n      _props$size = props.size,\n      size = _props$size === void 0 ? 'medium' : _props$size,\n      startIconProp = props.startIcon,\n      _props$type = props.type,\n      type = _props$type === void 0 ? 'button' : _props$type,\n      _props$variant = props.variant,\n      variant = _props$variant === void 0 ? 'text' : _props$variant,\n      other = _objectWithoutProperties(props, [\"children\", \"classes\", \"className\", \"color\", \"component\", \"disabled\", \"disableElevation\", \"disableFocusRipple\", \"endIcon\", \"focusVisibleClassName\", \"fullWidth\", \"size\", \"startIcon\", \"type\", \"variant\"]);\n\n  var startIcon = startIconProp && /*#__PURE__*/React.createElement(\"span\", {\n    className: clsx(classes.startIcon, classes[\"iconSize\".concat(capitalize(size))])\n  }, startIconProp);\n  var endIcon = endIconProp && /*#__PURE__*/React.createElement(\"span\", {\n    className: clsx(classes.endIcon, classes[\"iconSize\".concat(capitalize(size))])\n  }, endIconProp);\n  return /*#__PURE__*/React.createElement(ButtonBase, _extends({\n    className: clsx(classes.root, classes[variant], className, color === 'inherit' ? classes.colorInherit : color !== 'default' && classes[\"\".concat(variant).concat(capitalize(color))], size !== 'medium' && [classes[\"\".concat(variant, \"Size\").concat(capitalize(size))], classes[\"size\".concat(capitalize(size))]], disableElevation && classes.disableElevation, disabled && classes.disabled, fullWidth && classes.fullWidth),\n    component: component,\n    disabled: disabled,\n    focusRipple: !disableFocusRipple,\n    focusVisibleClassName: clsx(classes.focusVisible, focusVisibleClassName),\n    ref: ref,\n    type: type\n  }, other), /*#__PURE__*/React.createElement(\"span\", {\n    className: classes.label\n  }, startIcon, children, endIcon));\n});\nprocess.env.NODE_ENV !== \"production\" ? Button.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * The content of the button.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The color of the component. It supports those theme colors that make sense for this component.\n   */\n  color: PropTypes.oneOf(['default', 'inherit', 'primary', 'secondary']),\n\n  /**\n   * The component used for the root node.\n   * Either a string to use a HTML element or a component.\n   */\n  component: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .elementType,\n\n  /**\n   * If `true`, the button will be disabled.\n   */\n  disabled: PropTypes.bool,\n\n  /**\n   * If `true`, no elevation is used.\n   */\n  disableElevation: PropTypes.bool,\n\n  /**\n   * If `true`, the  keyboard focus ripple will be disabled.\n   */\n  disableFocusRipple: PropTypes.bool,\n\n  /**\n   * If `true`, the ripple effect will be disabled.\n   *\n   * ⚠️ Without a ripple there is no styling for :focus-visible by default. Be sure\n   * to highlight the element by applying separate styles with the `focusVisibleClassName`.\n   */\n  disableRipple: PropTypes.bool,\n\n  /**\n   * Element placed after the children.\n   */\n  endIcon: PropTypes.node,\n\n  /**\n   * @ignore\n   */\n  focusVisibleClassName: PropTypes.string,\n\n  /**\n   * If `true`, the button will take up the full width of its container.\n   */\n  fullWidth: PropTypes.bool,\n\n  /**\n   * The URL to link to when the button is clicked.\n   * If defined, an `a` element will be used as the root node.\n   */\n  href: PropTypes.string,\n\n  /**\n   * The size of the button.\n   * `small` is equivalent to the dense button styling.\n   */\n  size: PropTypes.oneOf(['large', 'medium', 'small']),\n\n  /**\n   * Element placed before the children.\n   */\n  startIcon: PropTypes.node,\n\n  /**\n   * @ignore\n   */\n  type: PropTypes.oneOfType([PropTypes.oneOf(['button', 'reset', 'submit']), PropTypes.string]),\n\n  /**\n   * The variant to use.\n   */\n  variant: PropTypes.oneOf(['contained', 'outlined', 'text'])\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiButton'\n})(Button);","/**\r\n * ReactPlugin.ts\r\n * @copyright Microsoft 2019\r\n */\r\nimport { __extends } from \"tslib\";\r\nimport { BaseTelemetryPlugin, _InternalMessageId, LoggingSeverity, safeGetCookieMgr, arrForEach } from \"@microsoft/applicationinsights-core-js\";\r\nvar ReactPlugin = /** @class */ (function (_super) {\r\n    __extends(ReactPlugin, _super);\r\n    function ReactPlugin() {\r\n        var _this = _super !== null && _super.apply(this, arguments) || this;\r\n        _this.priority = 185;\r\n        _this.identifier = 'ReactPlugin';\r\n        return _this;\r\n    }\r\n    ReactPlugin.prototype.initialize = function (config, core, extensions, pluginChain) {\r\n        var _this = this;\r\n        _super.prototype.initialize.call(this, config, core, extensions, pluginChain);\r\n        this._extensionConfig =\r\n            config.extensionConfig && config.extensionConfig[this.identifier]\r\n                ? config.extensionConfig[this.identifier]\r\n                : { history: null };\r\n        arrForEach(extensions, function (ext) {\r\n            var identifier = ext.identifier;\r\n            if (identifier === 'ApplicationInsightsAnalytics') {\r\n                _this._analyticsPlugin = ext;\r\n            }\r\n        });\r\n        if (this._extensionConfig.history) {\r\n            this.addHistoryListener(this._extensionConfig.history);\r\n            var pageViewTelemetry = {\r\n                uri: this._extensionConfig.history.location.pathname\r\n            };\r\n            this.trackPageView(pageViewTelemetry);\r\n        }\r\n    };\r\n    /**\r\n     * Get the current cookie manager for this instance\r\n     */\r\n    ReactPlugin.prototype.getCookieMgr = function () {\r\n        return safeGetCookieMgr(this.core);\r\n    };\r\n    /**\r\n     * Get application insights instance.\r\n     */\r\n    ReactPlugin.prototype.getAppInsights = function () {\r\n        return this._analyticsPlugin;\r\n    };\r\n    /**\r\n     * Add Part A fields to the event\r\n     * @param event The event that needs to be processed\r\n     */\r\n    ReactPlugin.prototype.processTelemetry = function (event, itemCtx) {\r\n        this.processNext(event, itemCtx);\r\n    };\r\n    ReactPlugin.prototype.trackMetric = function (metric, customProperties) {\r\n        if (this._analyticsPlugin) {\r\n            this._analyticsPlugin.trackMetric(metric, customProperties);\r\n        }\r\n        else {\r\n            this.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.TelemetryInitializerFailed, \"Analytics plugin is not available, React plugin telemetry will not be sent: \");\r\n        }\r\n    };\r\n    ReactPlugin.prototype.trackPageView = function (pageView) {\r\n        if (this._analyticsPlugin) {\r\n            this._analyticsPlugin.trackPageView(pageView);\r\n        }\r\n        else {\r\n            this.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.TelemetryInitializerFailed, \"Analytics plugin is not available, React plugin telemetry will not be sent: \");\r\n        }\r\n    };\r\n    ReactPlugin.prototype.trackEvent = function (event, customProperties) {\r\n        if (this._analyticsPlugin) {\r\n            this._analyticsPlugin.trackEvent(event, customProperties);\r\n        }\r\n        else {\r\n            this.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.TelemetryInitializerFailed, \"Analytics plugin is not available, React plugin telemetry will not be sent: \");\r\n        }\r\n    };\r\n    ReactPlugin.prototype.trackException = function (exception, customProperties) {\r\n        if (this._analyticsPlugin) {\r\n            this._analyticsPlugin.trackException(exception, customProperties);\r\n        }\r\n        else {\r\n            this.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.TelemetryInitializerFailed, \"Analytics plugin is not available, React plugin telemetry will not be sent: \");\r\n        }\r\n    };\r\n    ReactPlugin.prototype.trackTrace = function (trace, customProperties) {\r\n        if (this._analyticsPlugin) {\r\n            this._analyticsPlugin.trackTrace(trace, customProperties);\r\n        }\r\n        else {\r\n            this.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.TelemetryInitializerFailed, \"Analytics plugin is not available, React plugin telemetry will not be sent: \");\r\n        }\r\n    };\r\n    ReactPlugin.prototype.addHistoryListener = function (history) {\r\n        var _this = this;\r\n        var locationListener = function (location, action) {\r\n            // Timeout to ensure any changes to the DOM made by route changes get included in pageView telemetry\r\n            setTimeout(function () {\r\n                var pageViewTelemetry = { uri: location.pathname };\r\n                _this.trackPageView(pageViewTelemetry);\r\n            }, 500);\r\n        };\r\n        history.listen(locationListener);\r\n    };\r\n    return ReactPlugin;\r\n}(BaseTelemetryPlugin));\r\nexport default ReactPlugin;\r\n//# sourceMappingURL=ReactPlugin.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { __assign, __extends } from \"tslib\";\r\nimport { CoreUtils } from '@microsoft/applicationinsights-core-js';\r\nimport * as React from 'react';\r\n/**\r\n * Higher-order component function to hook Application Insights tracking\r\n * in a React component's lifecycle.\r\n *\r\n * @param reactPlugin ReactPlugin instance\r\n * @param Component the React component to be instrumented\r\n * @param componentName (optional) component name\r\n * @param className (optional) className of the HOC div\r\n */\r\nexport default function withAITracking(reactPlugin, Component, componentName, className) {\r\n    if (componentName === undefined || componentName === null || typeof componentName !== 'string') {\r\n        componentName = Component.prototype &&\r\n            Component.prototype.constructor &&\r\n            Component.prototype.constructor.name ||\r\n            'Unknown';\r\n    }\r\n    if (className === undefined || className === null || typeof className !== 'string') {\r\n        className = '';\r\n    }\r\n    return /** @class */ (function (_super) {\r\n        __extends(class_1, _super);\r\n        function class_1() {\r\n            var _this = _super !== null && _super.apply(this, arguments) || this;\r\n            _this._mountTimestamp = 0;\r\n            _this._firstActiveTimestamp = 0;\r\n            _this._idleStartTimestamp = 0;\r\n            _this._lastActiveTimestamp = 0;\r\n            _this._totalIdleTime = 0;\r\n            _this._idleCount = 0;\r\n            _this._idleTimeout = 5000;\r\n            _this.trackActivity = function (e) {\r\n                if (_this._firstActiveTimestamp === 0) {\r\n                    _this._firstActiveTimestamp = CoreUtils.dateNow();\r\n                    _this._lastActiveTimestamp = _this._firstActiveTimestamp;\r\n                }\r\n                else {\r\n                    _this._lastActiveTimestamp = CoreUtils.dateNow();\r\n                }\r\n                if (_this._idleStartTimestamp > 0) {\r\n                    var lastIdleTime = _this._lastActiveTimestamp - _this._idleStartTimestamp;\r\n                    _this._totalIdleTime += lastIdleTime;\r\n                    _this._idleStartTimestamp = 0;\r\n                }\r\n            };\r\n            return _this;\r\n        }\r\n        class_1.prototype.componentDidMount = function () {\r\n            var _this = this;\r\n            this._mountTimestamp = CoreUtils.dateNow();\r\n            this._firstActiveTimestamp = 0;\r\n            this._totalIdleTime = 0;\r\n            this._lastActiveTimestamp = 0;\r\n            this._idleStartTimestamp = 0;\r\n            this._idleCount = 0;\r\n            this._intervalId = setInterval(function () {\r\n                if (_this._lastActiveTimestamp > 0 && _this._idleStartTimestamp === 0 && CoreUtils.dateNow() - _this._lastActiveTimestamp >= _this._idleTimeout) {\r\n                    _this._idleStartTimestamp = CoreUtils.dateNow();\r\n                    _this._idleCount++;\r\n                }\r\n            }, 100);\r\n        };\r\n        class_1.prototype.componentWillUnmount = function () {\r\n            if (this._mountTimestamp === 0) {\r\n                throw new Error('withAITracking:componentWillUnmount: mountTimestamp is not initialized.');\r\n            }\r\n            if (this._intervalId) {\r\n                clearInterval(this._intervalId);\r\n            }\r\n            if (this._firstActiveTimestamp === 0) {\r\n                return;\r\n            }\r\n            var engagementTime = this.getEngagementTimeSeconds();\r\n            var metricData = {\r\n                average: engagementTime,\r\n                name: 'React Component Engaged Time (seconds)',\r\n                sampleCount: 1\r\n            };\r\n            var additionalProperties = { 'Component Name': componentName };\r\n            reactPlugin.trackMetric(metricData, additionalProperties);\r\n        };\r\n        class_1.prototype.render = function () {\r\n            return (React.createElement(\"div\", { onKeyDown: this.trackActivity, onMouseMove: this.trackActivity, onScroll: this.trackActivity, onMouseDown: this.trackActivity, onTouchStart: this.trackActivity, onTouchMove: this.trackActivity, className: className },\r\n                React.createElement(Component, __assign({}, this.props))));\r\n        };\r\n        class_1.prototype.getEngagementTimeSeconds = function () {\r\n            return (CoreUtils.dateNow() - this._firstActiveTimestamp - this._totalIdleTime - this._idleCount * this._idleTimeout) / 1000;\r\n        };\r\n        return class_1;\r\n    }(React.Component));\r\n}\r\n//# sourceMappingURL=withAITracking.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n\"use strict\";\r\nimport { arrForEach, isFunction } from \"./HelperFuncs\";\r\nvar processTelemetry = \"processTelemetry\";\r\nvar priority = \"priority\";\r\nvar setNextPlugin = \"setNextPlugin\";\r\nvar isInitialized = \"isInitialized\";\r\n/**\r\n * Initialize the queue of plugins\r\n * @param plugins - The array of plugins to initialize and setting of the next plugin\r\n * @param config The current config for the instance\r\n * @param core THe current core instance\r\n * @param extensions The extensions\r\n */\r\nexport function initializePlugins(processContext, extensions) {\r\n    // Set the next plugin and identified the uninitialized plugins\r\n    var initPlugins = [];\r\n    var lastPlugin = null;\r\n    var proxy = processContext.getNext();\r\n    while (proxy) {\r\n        var thePlugin = proxy.getPlugin();\r\n        if (thePlugin) {\r\n            if (lastPlugin &&\r\n                isFunction(lastPlugin[setNextPlugin]) &&\r\n                isFunction(thePlugin[processTelemetry])) {\r\n                // Set this plugin as the next for the previous one\r\n                lastPlugin[setNextPlugin](thePlugin);\r\n            }\r\n            if (!isFunction(thePlugin[isInitialized]) || !thePlugin[isInitialized]()) {\r\n                initPlugins.push(thePlugin);\r\n            }\r\n            lastPlugin = thePlugin;\r\n            proxy = proxy.getNext();\r\n        }\r\n    }\r\n    // Now initiatilize the plugins\r\n    arrForEach(initPlugins, function (thePlugin) {\r\n        thePlugin.initialize(processContext.getCfg(), processContext.core(), extensions, processContext.getNext());\r\n    });\r\n}\r\nexport function sortPlugins(plugins) {\r\n    // Sort by priority\r\n    return plugins.sort(function (extA, extB) {\r\n        var result = 0;\r\n        var bHasProcess = isFunction(extB[processTelemetry]);\r\n        if (isFunction(extA[processTelemetry])) {\r\n            result = bHasProcess ? extA[priority] - extB[priority] : 1;\r\n        }\r\n        else if (bHasProcess) {\r\n            result = -1;\r\n        }\r\n        return result;\r\n    });\r\n    // sort complete\r\n}\r\n//# sourceMappingURL=TelemetryHelpers.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n\"use strict\";\r\nimport { __extends } from \"tslib\";\r\nimport dynamicProto from \"@microsoft/dynamicproto-js\";\r\nimport { BaseTelemetryPlugin } from \"./BaseTelemetryPlugin\";\r\nimport { ProcessTelemetryContext } from \"./ProcessTelemetryContext\";\r\nimport { initializePlugins } from \"./TelemetryHelpers\";\r\nimport { arrForEach, objDefineAccessors, throwError } from \"./HelperFuncs\";\r\nvar ChannelControllerPriority = 500;\r\nvar ChannelValidationMessage = \"Channel has invalid priority\";\r\nvar ChannelController = /** @class */ (function (_super) {\r\n    __extends(ChannelController, _super);\r\n    function ChannelController() {\r\n        var _this = _super.call(this) || this;\r\n        _this.identifier = \"ChannelControllerPlugin\";\r\n        _this.priority = ChannelControllerPriority; // in reserved range 100 to 200\r\n        var _channelQueue;\r\n        dynamicProto(ChannelController, _this, function (_self, _base) {\r\n            _self.setNextPlugin = function (next) {\r\n                // The Channel controller is last in pipeline\r\n            };\r\n            _self.processTelemetry = function (item, itemCtx) {\r\n                if (_channelQueue) {\r\n                    arrForEach(_channelQueue, function (queues) {\r\n                        // pass on to first item in queue\r\n                        if (queues.length > 0) {\r\n                            // Copying the item context as we could have mutiple chains that are executing asynchronously\r\n                            // and calling _getDefTelCtx as it's possible that the caller doesn't pass any context\r\n                            var chainCtx = _this._getTelCtx(itemCtx).createNew(queues);\r\n                            chainCtx.processNext(item);\r\n                        }\r\n                    });\r\n                }\r\n            };\r\n            _self.getChannelControls = function () {\r\n                return _channelQueue;\r\n            };\r\n            _self.initialize = function (config, core, extensions) {\r\n                if (_self.isInitialized()) {\r\n                    // already initialized\r\n                    return;\r\n                }\r\n                _base.initialize(config, core, extensions);\r\n                _createChannelQueues((config || {}).channels, extensions);\r\n                // Initialize the Queues\r\n                arrForEach(_channelQueue, function (queue) { return initializePlugins(new ProcessTelemetryContext(queue, config, core), extensions); });\r\n            };\r\n        });\r\n        function _checkQueuePriority(queue) {\r\n            arrForEach(queue, function (queueItem) {\r\n                if (queueItem.priority < ChannelControllerPriority) {\r\n                    throwError(ChannelValidationMessage + queueItem.identifier);\r\n                }\r\n            });\r\n        }\r\n        function _addChannelQueue(queue) {\r\n            if (queue && queue.length > 0) {\r\n                queue = queue.sort(function (a, b) {\r\n                    return a.priority - b.priority;\r\n                });\r\n                _checkQueuePriority(queue);\r\n                _channelQueue.push(queue);\r\n            }\r\n        }\r\n        function _createChannelQueues(channels, extensions) {\r\n            _channelQueue = [];\r\n            if (channels) {\r\n                // Add and sort the configuration channel queues\r\n                arrForEach(channels, function (queue) { return _addChannelQueue(queue); });\r\n            }\r\n            if (extensions) {\r\n                // Create a new channel queue for any extensions with a priority > the ChannelControllerPriority\r\n                var extensionQueue_1 = [];\r\n                arrForEach(extensions, function (plugin) {\r\n                    if (plugin.priority > ChannelControllerPriority) {\r\n                        extensionQueue_1.push(plugin);\r\n                    }\r\n                });\r\n                _addChannelQueue(extensionQueue_1);\r\n            }\r\n        }\r\n        return _this;\r\n    }\r\n    ChannelController.prototype.processTelemetry = function (item, itemCtx) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    ChannelController.prototype.getChannelControls = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return null;\r\n    };\r\n    ChannelController.prototype.initialize = function (config, core, extensions) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Static constructor, attempt to create accessors\r\n     */\r\n    // tslint:disable-next-line\r\n    ChannelController._staticInit = (function () {\r\n        var proto = ChannelController.prototype;\r\n        // Dynamically create get/set property accessors\r\n        objDefineAccessors(proto, \"ChannelControls\", proto.getChannelControls);\r\n        objDefineAccessors(proto, \"channelQueue\", proto.getChannelControls);\r\n    })();\r\n    return ChannelController;\r\n}(BaseTelemetryPlugin));\r\nexport { ChannelController };\r\n//# sourceMappingURL=ChannelController.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n\"use strict\";\r\nimport { __spreadArray } from \"tslib\";\r\nimport { objCreateFn } from \"@microsoft/applicationinsights-shims\";\r\nimport dynamicProto from \"@microsoft/dynamicproto-js\";\r\nimport { ChannelController } from \"./ChannelController\";\r\nimport { ProcessTelemetryContext } from \"./ProcessTelemetryContext\";\r\nimport { initializePlugins, sortPlugins } from \"./TelemetryHelpers\";\r\nimport { LoggingSeverity } from \"../JavaScriptSDK.Enums/LoggingEnums\";\r\nimport { getGblPerfMgr, PerfManager } from \"./PerfManager\";\r\nimport { createCookieMgr } from \"./CookieMgr\";\r\nimport { arrForEach, isNullOrUndefined, toISOString, getSetValue, setValue, throwError, isNotTruthy, isFunction } from \"./HelperFuncs\";\r\nimport { strExtensionConfig, strIKey } from \"./Constants\";\r\nimport { DiagnosticLogger } from \"./DiagnosticLogger\";\r\nvar validationError = \"Extensions must provide callback to initialize\";\r\nvar strNotificationManager = \"_notificationManager\";\r\n/**\r\n * Helper to create the default performance manager\r\n * @param core\r\n * @param notificationMgr\r\n */\r\nfunction _createPerfManager(core, notificationMgr) {\r\n    return new PerfManager(notificationMgr);\r\n}\r\nvar BaseCore = /** @class */ (function () {\r\n    function BaseCore() {\r\n        var _isInitialized = false;\r\n        var _eventQueue;\r\n        var _channelController;\r\n        var _notificationManager;\r\n        var _perfManager;\r\n        var _cookieManager;\r\n        dynamicProto(BaseCore, this, function (_self) {\r\n            _self._extensions = new Array();\r\n            _channelController = new ChannelController();\r\n            // Use a default logger so initialization errors are not dropped on the floor with full logging\r\n            _self.logger = new DiagnosticLogger({ loggingLevelConsole: LoggingSeverity.CRITICAL });\r\n            _eventQueue = [];\r\n            _self.isInitialized = function () { return _isInitialized; };\r\n            _self.initialize = function (config, extensions, logger, notificationManager) {\r\n                // Make sure core is only initialized once\r\n                if (_self.isInitialized()) {\r\n                    throwError(\"Core should not be initialized more than once\");\r\n                }\r\n                if (!config || isNullOrUndefined(config.instrumentationKey)) {\r\n                    throwError(\"Please provide instrumentation key\");\r\n                }\r\n                _notificationManager = notificationManager;\r\n                // For backward compatibility only\r\n                _self[strNotificationManager] = notificationManager;\r\n                _self.config = config || {};\r\n                if (_self.config.enablePerfMgr) {\r\n                    // Set the performance manager creation function if not defined\r\n                    setValue(_self.config, \"createPerfMgr\", _createPerfManager);\r\n                }\r\n                config.extensions = isNullOrUndefined(config.extensions) ? [] : config.extensions;\r\n                // add notification to the extensions in the config so other plugins can access it\r\n                var extConfig = getSetValue(config, strExtensionConfig);\r\n                extConfig.NotificationManager = notificationManager;\r\n                if (logger) {\r\n                    _self.logger = logger;\r\n                }\r\n                // Concat all available extensions\r\n                var allExtensions = [];\r\n                allExtensions.push.apply(allExtensions, __spreadArray(__spreadArray([], extensions, false), config.extensions, false));\r\n                allExtensions = sortPlugins(allExtensions);\r\n                var coreExtensions = [];\r\n                var channelExtensions = [];\r\n                // Check if any two extensions have the same priority, then warn to console\r\n                // And extract the local extensions from the\r\n                var extPriorities = {};\r\n                // Extension validation\r\n                arrForEach(allExtensions, function (ext) {\r\n                    if (isNullOrUndefined(ext) || isNullOrUndefined(ext.initialize)) {\r\n                        throwError(validationError);\r\n                    }\r\n                    var extPriority = ext.priority;\r\n                    var identifier = ext.identifier;\r\n                    if (ext && extPriority) {\r\n                        if (!isNullOrUndefined(extPriorities[extPriority])) {\r\n                            logger.warnToConsole(\"Two extensions have same priority #\" + extPriority + \" - \" + extPriorities[extPriority] + \", \" + identifier);\r\n                        }\r\n                        else {\r\n                            // set a value\r\n                            extPriorities[extPriority] = identifier;\r\n                        }\r\n                    }\r\n                    // Split extensions to core and channelController\r\n                    if (!extPriority || extPriority < _channelController.priority) {\r\n                        // Add to core extension that will be managed by BaseCore\r\n                        coreExtensions.push(ext);\r\n                    }\r\n                    else {\r\n                        // Add all other extensions to be managed by the channel controller\r\n                        channelExtensions.push(ext);\r\n                    }\r\n                });\r\n                // Validation complete\r\n                // Add the channelController to the complete extension collection and\r\n                // to the end of the core extensions\r\n                allExtensions.push(_channelController);\r\n                coreExtensions.push(_channelController);\r\n                // Sort the complete set of extensions by priority\r\n                allExtensions = sortPlugins(allExtensions);\r\n                _self._extensions = allExtensions;\r\n                // initialize channel controller first, this will initialize all channel plugins\r\n                initializePlugins(new ProcessTelemetryContext([_channelController], config, _self), allExtensions);\r\n                initializePlugins(new ProcessTelemetryContext(coreExtensions, config, _self), allExtensions);\r\n                // Now reset the extensions to just those being managed by Basecore\r\n                _self._extensions = coreExtensions;\r\n                if (_self.getTransmissionControls().length === 0) {\r\n                    throwError(\"No channels available\");\r\n                }\r\n                _isInitialized = true;\r\n                _self.releaseQueue();\r\n            };\r\n            _self.getTransmissionControls = function () {\r\n                return _channelController.getChannelControls();\r\n            };\r\n            _self.track = function (telemetryItem) {\r\n                // setup default iKey if not passed in\r\n                setValue(telemetryItem, strIKey, _self.config.instrumentationKey, null, isNotTruthy);\r\n                // add default timestamp if not passed in\r\n                setValue(telemetryItem, \"time\", toISOString(new Date()), null, isNotTruthy);\r\n                // Common Schema 4.0\r\n                setValue(telemetryItem, \"ver\", \"4.0\", null, isNullOrUndefined);\r\n                if (_self.isInitialized()) {\r\n                    // Process the telemetry plugin chain\r\n                    _self.getProcessTelContext().processNext(telemetryItem);\r\n                }\r\n                else {\r\n                    // Queue events until all extensions are initialized\r\n                    _eventQueue.push(telemetryItem);\r\n                }\r\n            };\r\n            _self.getProcessTelContext = function () {\r\n                var extensions = _self._extensions;\r\n                var thePlugins = extensions;\r\n                // invoke any common telemetry processors before sending through pipeline\r\n                if (!extensions || extensions.length === 0) {\r\n                    // Pass to Channel controller so data is sent to correct channel queues\r\n                    thePlugins = [_channelController];\r\n                }\r\n                return new ProcessTelemetryContext(thePlugins, _self.config, _self);\r\n            };\r\n            _self.getNotifyMgr = function () {\r\n                if (!_notificationManager) {\r\n                    // Create Dummy notification manager\r\n                    _notificationManager = objCreateFn({\r\n                        addNotificationListener: function (listener) { },\r\n                        removeNotificationListener: function (listener) { },\r\n                        eventsSent: function (events) { },\r\n                        eventsDiscarded: function (events, reason) { },\r\n                        eventsSendRequest: function (sendReason, isAsync) { }\r\n                    });\r\n                    // For backward compatibility only\r\n                    _self[strNotificationManager] = _notificationManager;\r\n                }\r\n                return _notificationManager;\r\n            };\r\n            _self.getCookieMgr = function () {\r\n                if (!_cookieManager) {\r\n                    _cookieManager = createCookieMgr(_self.config, _self.logger);\r\n                }\r\n                return _cookieManager;\r\n            };\r\n            _self.setCookieMgr = function (cookieMgr) {\r\n                _cookieManager = cookieMgr;\r\n            };\r\n            _self.getPerfMgr = function () {\r\n                if (!_perfManager) {\r\n                    if (_self.config && _self.config.enablePerfMgr && isFunction(_self.config.createPerfMgr)) {\r\n                        _perfManager = _self.config.createPerfMgr(_self, _self.getNotifyMgr());\r\n                    }\r\n                }\r\n                return _perfManager || getGblPerfMgr();\r\n            };\r\n            _self.setPerfMgr = function (perfMgr) {\r\n                _perfManager = perfMgr;\r\n            };\r\n            _self.eventCnt = function () {\r\n                return _eventQueue.length;\r\n            };\r\n            _self.releaseQueue = function () {\r\n                if (_eventQueue.length > 0) {\r\n                    arrForEach(_eventQueue, function (event) {\r\n                        _self.getProcessTelContext().processNext(event);\r\n                    });\r\n                    _eventQueue = [];\r\n                }\r\n            };\r\n        });\r\n    }\r\n    BaseCore.prototype.initialize = function (config, extensions, logger, notificationManager) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    BaseCore.prototype.getTransmissionControls = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return null;\r\n    };\r\n    BaseCore.prototype.track = function (telemetryItem) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    BaseCore.prototype.getProcessTelContext = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return null;\r\n    };\r\n    BaseCore.prototype.getNotifyMgr = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return null;\r\n    };\r\n    /**\r\n     * Get the current cookie manager for this instance\r\n     */\r\n    BaseCore.prototype.getCookieMgr = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return null;\r\n    };\r\n    /**\r\n     * Set the current cookie manager for this instance\r\n     * @param cookieMgr - The manager, if set to null/undefined will cause the default to be created\r\n     */\r\n    BaseCore.prototype.setCookieMgr = function (cookieMgr) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    BaseCore.prototype.getPerfMgr = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return null;\r\n    };\r\n    BaseCore.prototype.setPerfMgr = function (perfMgr) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    BaseCore.prototype.eventCnt = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return 0;\r\n    };\r\n    BaseCore.prototype.releaseQueue = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    return BaseCore;\r\n}());\r\nexport { BaseCore };\r\n//# sourceMappingURL=BaseCore.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n/**\r\n * The EventsDiscardedReason enumeration contains a set of values that specify the reason for discarding an event.\r\n */\r\nexport var EventsDiscardedReason = {\r\n    /**\r\n     * Unknown.\r\n     */\r\n    Unknown: 0,\r\n    /**\r\n     * Status set to non-retryable.\r\n     */\r\n    NonRetryableStatus: 1,\r\n    /**\r\n     * The event is invalid.\r\n     */\r\n    InvalidEvent: 2,\r\n    /**\r\n     * The size of the event is too large.\r\n     */\r\n    SizeLimitExceeded: 3,\r\n    /**\r\n     * The server is not accepting events from this instrumentation key.\r\n     */\r\n    KillSwitch: 4,\r\n    /**\r\n     * The event queue is full.\r\n     */\r\n    QueueFull: 5\r\n};\r\n//# sourceMappingURL=EventsDiscardedReason.js.map","import dynamicProto from \"@microsoft/dynamicproto-js\";\r\nimport { arrForEach, arrIndexOf } from \"./HelperFuncs\";\r\n/**\r\n * Class to manage sending notifications to all the listeners.\r\n */\r\nvar NotificationManager = /** @class */ (function () {\r\n    function NotificationManager(config) {\r\n        this.listeners = [];\r\n        var perfEvtsSendAll = !!(config || {}).perfEvtsSendAll;\r\n        dynamicProto(NotificationManager, this, function (_self) {\r\n            _self.addNotificationListener = function (listener) {\r\n                _self.listeners.push(listener);\r\n            };\r\n            /**\r\n             * Removes all instances of the listener.\r\n             * @param {INotificationListener} listener - AWTNotificationListener to remove.\r\n             */\r\n            _self.removeNotificationListener = function (listener) {\r\n                var index = arrIndexOf(_self.listeners, listener);\r\n                while (index > -1) {\r\n                    _self.listeners.splice(index, 1);\r\n                    index = arrIndexOf(_self.listeners, listener);\r\n                }\r\n            };\r\n            /**\r\n             * Notification for events sent.\r\n             * @param {ITelemetryItem[]} events - The array of events that have been sent.\r\n             */\r\n            _self.eventsSent = function (events) {\r\n                arrForEach(_self.listeners, function (listener) {\r\n                    if (listener && listener.eventsSent) {\r\n                        setTimeout(function () { return listener.eventsSent(events); }, 0);\r\n                    }\r\n                });\r\n            };\r\n            /**\r\n             * Notification for events being discarded.\r\n             * @param {ITelemetryItem[]} events - The array of events that have been discarded by the SDK.\r\n             * @param {number} reason           - The reason for which the SDK discarded the events. The EventsDiscardedReason\r\n             * constant should be used to check the different values.\r\n             */\r\n            _self.eventsDiscarded = function (events, reason) {\r\n                arrForEach(_self.listeners, function (listener) {\r\n                    if (listener && listener.eventsDiscarded) {\r\n                        setTimeout(function () { return listener.eventsDiscarded(events, reason); }, 0);\r\n                    }\r\n                });\r\n            };\r\n            /**\r\n             * [Optional] A function called when the events have been requested to be sent to the sever.\r\n             * @param {number} sendReason - The reason why the event batch is being sent.\r\n             * @param {boolean} isAsync   - A flag which identifies whether the requests are being sent in an async or sync manner.\r\n             */\r\n            _self.eventsSendRequest = function (sendReason, isAsync) {\r\n                arrForEach(_self.listeners, function (listener) {\r\n                    if (listener && listener.eventsSendRequest) {\r\n                        if (isAsync) {\r\n                            setTimeout(function () { return listener.eventsSendRequest(sendReason, isAsync); }, 0);\r\n                        }\r\n                        else {\r\n                            try {\r\n                                listener.eventsSendRequest(sendReason, isAsync);\r\n                            }\r\n                            catch (e) {\r\n                                // Catch errors to ensure we don't block sending the requests\r\n                            }\r\n                        }\r\n                    }\r\n                });\r\n            };\r\n            _self.perfEvent = function (perfEvent) {\r\n                if (perfEvent) {\r\n                    // Send all events or only parent events\r\n                    if (perfEvtsSendAll || !perfEvent.isChildEvt()) {\r\n                        arrForEach(_self.listeners, function (listener) {\r\n                            if (listener && listener.perfEvent) {\r\n                                if (perfEvent.isAsync) {\r\n                                    setTimeout(function () { return listener.perfEvent(perfEvent); }, 0);\r\n                                }\r\n                                else {\r\n                                    try {\r\n                                        listener.perfEvent(perfEvent);\r\n                                    }\r\n                                    catch (e) {\r\n                                        // Catch errors to ensure we don't block sending the requests\r\n                                    }\r\n                                }\r\n                            }\r\n                        });\r\n                    }\r\n                }\r\n            };\r\n        });\r\n    }\r\n    /**\r\n     * Adds a notification listener.\r\n     * @param {INotificationListener} listener - The notification listener to be added.\r\n     */\r\n    NotificationManager.prototype.addNotificationListener = function (listener) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Removes all instances of the listener.\r\n     * @param {INotificationListener} listener - AWTNotificationListener to remove.\r\n     */\r\n    NotificationManager.prototype.removeNotificationListener = function (listener) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Notification for events sent.\r\n     * @param {ITelemetryItem[]} events - The array of events that have been sent.\r\n     */\r\n    NotificationManager.prototype.eventsSent = function (events) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Notification for events being discarded.\r\n     * @param {ITelemetryItem[]} events - The array of events that have been discarded by the SDK.\r\n     * @param {number} reason           - The reason for which the SDK discarded the events. The EventsDiscardedReason\r\n     * constant should be used to check the different values.\r\n     */\r\n    NotificationManager.prototype.eventsDiscarded = function (events, reason) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * [Optional] A function called when the events have been requested to be sent to the sever.\r\n     * @param {number} sendReason - The reason why the event batch is being sent.\r\n     * @param {boolean} isAsync   - A flag which identifies whether the requests are being sent in an async or sync manner.\r\n     */\r\n    NotificationManager.prototype.eventsSendRequest = function (sendReason, isAsync) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    return NotificationManager;\r\n}());\r\nexport { NotificationManager };\r\n//# sourceMappingURL=NotificationManager.js.map","import { __extends } from \"tslib\";\r\nimport { BaseCore } from \"./BaseCore\";\r\nimport { EventsDiscardedReason } from \"../JavaScriptSDK.Enums/EventsDiscardedReason\";\r\nimport { NotificationManager } from \"./NotificationManager\";\r\nimport { doPerf } from \"./PerfManager\";\r\nimport { _InternalLogMessage, DiagnosticLogger } from \"./DiagnosticLogger\";\r\nimport dynamicProto from \"@microsoft/dynamicproto-js\";\r\nimport { arrForEach, isNullOrUndefined, toISOString, throwError } from \"./HelperFuncs\";\r\n\"use strict\";\r\nvar AppInsightsCore = /** @class */ (function (_super) {\r\n    __extends(AppInsightsCore, _super);\r\n    function AppInsightsCore() {\r\n        var _this = _super.call(this) || this;\r\n        /**\r\n         * Internal log poller\r\n         */\r\n        var _internalLogPoller = 0;\r\n        dynamicProto(AppInsightsCore, _this, function (_self, _base) {\r\n            _self.initialize = function (config, extensions, logger, notificationManager) {\r\n                _base.initialize(config, extensions, logger || new DiagnosticLogger(config), notificationManager || new NotificationManager(config));\r\n            };\r\n            _self.track = function (telemetryItem) {\r\n                doPerf(_self.getPerfMgr(), function () { return \"AppInsightsCore:track\"; }, function () {\r\n                    if (telemetryItem === null) {\r\n                        _notifyInvalidEvent(telemetryItem);\r\n                        // throw error\r\n                        throwError(\"Invalid telemetry item\");\r\n                    }\r\n                    // do basic validation before sending it through the pipeline\r\n                    _validateTelemetryItem(telemetryItem);\r\n                    _base.track(telemetryItem);\r\n                }, function () { return ({ item: telemetryItem }); }, !(telemetryItem.sync));\r\n            };\r\n            /**\r\n             * Adds a notification listener. The SDK calls methods on the listener when an appropriate notification is raised.\r\n             * The added plugins must raise notifications. If the plugins do not implement the notifications, then no methods will be\r\n             * called.\r\n             * @param {INotificationListener} listener - An INotificationListener object.\r\n             */\r\n            _self.addNotificationListener = function (listener) {\r\n                var manager = _self.getNotifyMgr();\r\n                if (manager) {\r\n                    manager.addNotificationListener(listener);\r\n                }\r\n            };\r\n            /**\r\n             * Removes all instances of the listener.\r\n             * @param {INotificationListener} listener - INotificationListener to remove.\r\n             */\r\n            _self.removeNotificationListener = function (listener) {\r\n                var manager = _self.getNotifyMgr();\r\n                if (manager) {\r\n                    manager.removeNotificationListener(listener);\r\n                }\r\n            };\r\n            /**\r\n             * Periodically check logger.queue for log messages to be flushed\r\n             */\r\n            _self.pollInternalLogs = function (eventName) {\r\n                var interval = _self.config.diagnosticLogInterval;\r\n                if (!interval || !(interval > 0)) {\r\n                    interval = 10000;\r\n                }\r\n                if (_internalLogPoller) {\r\n                    _self.stopPollingInternalLogs();\r\n                }\r\n                _internalLogPoller = setInterval(function () {\r\n                    var queue = _self.logger ? _self.logger.queue : [];\r\n                    arrForEach(queue, function (logMessage) {\r\n                        var item = {\r\n                            name: eventName ? eventName : \"InternalMessageId: \" + logMessage.messageId,\r\n                            iKey: _self.config.instrumentationKey,\r\n                            time: toISOString(new Date()),\r\n                            baseType: _InternalLogMessage.dataType,\r\n                            baseData: { message: logMessage.message }\r\n                        };\r\n                        _self.track(item);\r\n                    });\r\n                    queue.length = 0;\r\n                }, interval);\r\n                return _internalLogPoller;\r\n            };\r\n            /**\r\n             * Stop polling log messages from logger.queue\r\n             */\r\n            _self.stopPollingInternalLogs = function () {\r\n                if (!_internalLogPoller)\r\n                    return;\r\n                clearInterval(_internalLogPoller);\r\n                _internalLogPoller = 0;\r\n            };\r\n            function _validateTelemetryItem(telemetryItem) {\r\n                if (isNullOrUndefined(telemetryItem.name)) {\r\n                    _notifyInvalidEvent(telemetryItem);\r\n                    throw Error(\"telemetry name required\");\r\n                }\r\n            }\r\n            function _notifyInvalidEvent(telemetryItem) {\r\n                var manager = _self.getNotifyMgr();\r\n                if (manager) {\r\n                    manager.eventsDiscarded([telemetryItem], EventsDiscardedReason.InvalidEvent);\r\n                }\r\n            }\r\n        });\r\n        return _this;\r\n    }\r\n    AppInsightsCore.prototype.initialize = function (config, extensions, logger, notificationManager) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    AppInsightsCore.prototype.track = function (telemetryItem) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Adds a notification listener. The SDK calls methods on the listener when an appropriate notification is raised.\r\n     * The added plugins must raise notifications. If the plugins do not implement the notifications, then no methods will be\r\n     * called.\r\n     * @param {INotificationListener} listener - An INotificationListener object.\r\n     */\r\n    AppInsightsCore.prototype.addNotificationListener = function (listener) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Removes all instances of the listener.\r\n     * @param {INotificationListener} listener - INotificationListener to remove.\r\n     */\r\n    AppInsightsCore.prototype.removeNotificationListener = function (listener) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Periodically check logger.queue for\r\n     */\r\n    AppInsightsCore.prototype.pollInternalLogs = function (eventName) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return 0;\r\n    };\r\n    /**\r\n     * Periodically check logger.queue for\r\n     */\r\n    AppInsightsCore.prototype.stopPollingInternalLogs = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    return AppInsightsCore;\r\n}(BaseCore));\r\nexport { AppInsightsCore };\r\n//# sourceMappingURL=AppInsightsCore.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the\r\nexport { Util, CorrelationIdHelper, DateTimeUtils, dateTimeUtilsNow, dateTimeUtilsDuration, UrlHelper, isInternalApplicationInsightsEndpoint } from \"./Util\";\r\nexport { parseConnectionString, ConnectionStringParser } from \"./ConnectionStringParser\";\r\nexport { RequestHeaders } from \"./RequestResponseHeaders\";\r\nexport { DisabledPropertyName, ProcessLegacy, SampleRate, HttpMethod, DEFAULT_BREEZE_ENDPOINT, strNotSpecified } from \"./Constants\";\r\nexport { Data as AIData } from \"./Interfaces/Contracts/Generated/Data\";\r\nexport { Base as AIBase } from \"./Interfaces/Contracts/Generated/Base\";\r\nexport { Envelope } from \"./Telemetry/Common/Envelope\";\r\nexport { Event } from \"./Telemetry/Event\";\r\nexport { Exception } from \"./Telemetry/Exception\";\r\nexport { Metric } from \"./Telemetry/Metric\";\r\nexport { PageView } from \"./Telemetry/PageView\";\r\nexport { PageViewData } from \"./Interfaces/Contracts/Generated/PageViewData\";\r\nexport { RemoteDependencyData } from \"./Telemetry/RemoteDependencyData\";\r\nexport { Trace } from \"./Telemetry/Trace\";\r\nexport { PageViewPerformance } from \"./Telemetry/PageViewPerformance\";\r\nexport { Data } from \"./Telemetry/Common/Data\";\r\nexport { SeverityLevel } from \"./Interfaces/Contracts/Generated/SeverityLevel\";\r\nexport { ConfigurationManager } from \"./Interfaces/IConfig\";\r\nexport { ContextTagKeys } from \"./Interfaces/Contracts/Generated/ContextTagKeys\";\r\nexport { DataSanitizer, dataSanitizeKeyAndAddUniqueness, dataSanitizeKey, dataSanitizeString, dataSanitizeUrl, dataSanitizeMessage, dataSanitizeException, dataSanitizeProperties, dataSanitizeMeasurements, dataSanitizeId, dataSanitizeInput, dsPadNumber } from \"./Telemetry/Common/DataSanitizer\";\r\nexport { TelemetryItemCreator } from \"./TelemetryItemCreator\";\r\nexport { CtxTagKeys, Extensions } from \"./Interfaces/PartAExtensions\";\r\nexport { DistributedTracingModes } from \"./Enums\";\r\nexport { stringToBoolOrDefault, msToTimeSpan, getExtensionByName, isCrossOriginError } from \"./HelperFuncs\";\r\nexport { isBeaconsSupported as isBeaconApiSupported } from \"@microsoft/applicationinsights-core-js\";\r\nexport { createDomEvent } from \"./DomHelperFuncs\";\r\nexport { utlDisableStorage, utlCanUseLocalStorage, utlGetLocalStorage, utlSetLocalStorage, utlRemoveStorage, utlCanUseSessionStorage, utlGetSessionStorageKeys, utlGetSessionStorage, utlSetSessionStorage, utlRemoveSessionStorage } from \"./StorageHelperFuncs\";\r\nexport { urlParseUrl, urlGetAbsoluteUrl, urlGetPathName, urlGetCompleteUrl, urlParseHost, urlParseFullHost } from \"./UrlHelperFuncs\";\r\nexport var PropertiesPluginIdentifier = \"AppInsightsPropertiesPlugin\";\r\nexport var BreezeChannelIdentifier = \"AppInsightsChannelPlugin\";\r\nexport var AnalyticsPluginIdentifier = \"ApplicationInsightsAnalytics\";\r\n//# sourceMappingURL=applicationinsights-common.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { LoggingSeverity, _InternalMessageId, hasJSON, getJSON, objForEachKey, isObject, strTrim } from \"@microsoft/applicationinsights-core-js\";\r\nexport function dataSanitizeKeyAndAddUniqueness(logger, key, map) {\r\n    var origLength = key.length;\r\n    var field = dataSanitizeKey(logger, key);\r\n    // validation truncated the length.  We need to add uniqueness\r\n    if (field.length !== origLength) {\r\n        var i = 0;\r\n        var uniqueField = field;\r\n        while (map[uniqueField] !== undefined) {\r\n            i++;\r\n            uniqueField = field.substring(0, 150 /* MAX_NAME_LENGTH */ - 3) + dsPadNumber(i);\r\n        }\r\n        field = uniqueField;\r\n    }\r\n    return field;\r\n}\r\nexport function dataSanitizeKey(logger, name) {\r\n    var nameTrunc;\r\n    if (name) {\r\n        // Remove any leading or trailing whitespace\r\n        name = strTrim(name.toString());\r\n        // truncate the string to 150 chars\r\n        if (name.length > 150 /* MAX_NAME_LENGTH */) {\r\n            nameTrunc = name.substring(0, 150 /* MAX_NAME_LENGTH */);\r\n            logger && logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.NameTooLong, \"name is too long.  It has been truncated to \" + 150 /* MAX_NAME_LENGTH */ + \" characters.\", { name: name }, true);\r\n        }\r\n    }\r\n    return nameTrunc || name;\r\n}\r\nexport function dataSanitizeString(logger, value, maxLength) {\r\n    if (maxLength === void 0) { maxLength = 1024 /* MAX_STRING_LENGTH */; }\r\n    var valueTrunc;\r\n    if (value) {\r\n        maxLength = maxLength ? maxLength : 1024 /* MAX_STRING_LENGTH */; // in case default parameters dont work\r\n        value = strTrim(value);\r\n        if (value.toString().length > maxLength) {\r\n            valueTrunc = value.toString().substring(0, maxLength);\r\n            logger && logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.StringValueTooLong, \"string value is too long. It has been truncated to \" + maxLength + \" characters.\", { value: value }, true);\r\n        }\r\n    }\r\n    return valueTrunc || value;\r\n}\r\nexport function dataSanitizeUrl(logger, url) {\r\n    return dataSanitizeInput(logger, url, 2048 /* MAX_URL_LENGTH */, _InternalMessageId.UrlTooLong);\r\n}\r\nexport function dataSanitizeMessage(logger, message) {\r\n    var messageTrunc;\r\n    if (message) {\r\n        if (message.length > 32768 /* MAX_MESSAGE_LENGTH */) {\r\n            messageTrunc = message.substring(0, 32768 /* MAX_MESSAGE_LENGTH */);\r\n            logger && logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.MessageTruncated, \"message is too long, it has been truncated to \" + 32768 /* MAX_MESSAGE_LENGTH */ + \" characters.\", { message: message }, true);\r\n        }\r\n    }\r\n    return messageTrunc || message;\r\n}\r\nexport function dataSanitizeException(logger, exception) {\r\n    var exceptionTrunc;\r\n    if (exception) {\r\n        // Make surte its a string\r\n        var value = \"\" + exception;\r\n        if (value.length > 32768 /* MAX_EXCEPTION_LENGTH */) {\r\n            exceptionTrunc = value.substring(0, 32768 /* MAX_EXCEPTION_LENGTH */);\r\n            logger && logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.ExceptionTruncated, \"exception is too long, it has been truncated to \" + 32768 /* MAX_EXCEPTION_LENGTH */ + \" characters.\", { exception: exception }, true);\r\n        }\r\n    }\r\n    return exceptionTrunc || exception;\r\n}\r\nexport function dataSanitizeProperties(logger, properties) {\r\n    if (properties) {\r\n        var tempProps_1 = {};\r\n        objForEachKey(properties, function (prop, value) {\r\n            if (isObject(value) && hasJSON()) {\r\n                // Stringify any part C properties\r\n                try {\r\n                    value = getJSON().stringify(value);\r\n                }\r\n                catch (e) {\r\n                    logger && logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.CannotSerializeObjectNonSerializable, \"custom property is not valid\", { exception: e }, true);\r\n                }\r\n            }\r\n            value = dataSanitizeString(logger, value, 8192 /* MAX_PROPERTY_LENGTH */);\r\n            prop = dataSanitizeKeyAndAddUniqueness(logger, prop, tempProps_1);\r\n            tempProps_1[prop] = value;\r\n        });\r\n        properties = tempProps_1;\r\n    }\r\n    return properties;\r\n}\r\nexport function dataSanitizeMeasurements(logger, measurements) {\r\n    if (measurements) {\r\n        var tempMeasurements_1 = {};\r\n        objForEachKey(measurements, function (measure, value) {\r\n            measure = dataSanitizeKeyAndAddUniqueness(logger, measure, tempMeasurements_1);\r\n            tempMeasurements_1[measure] = value;\r\n        });\r\n        measurements = tempMeasurements_1;\r\n    }\r\n    return measurements;\r\n}\r\nexport function dataSanitizeId(logger, id) {\r\n    return id ? dataSanitizeInput(logger, id, 128 /* MAX_ID_LENGTH */, _InternalMessageId.IdTooLong).toString() : id;\r\n}\r\nexport function dataSanitizeInput(logger, input, maxLength, _msgId) {\r\n    var inputTrunc;\r\n    if (input) {\r\n        input = strTrim(input);\r\n        if (input.length > maxLength) {\r\n            inputTrunc = input.substring(0, maxLength);\r\n            logger && logger.throwInternal(LoggingSeverity.WARNING, _msgId, \"input is too long, it has been truncated to \" + maxLength + \" characters.\", { data: input }, true);\r\n        }\r\n    }\r\n    return inputTrunc || input;\r\n}\r\nexport function dsPadNumber(num) {\r\n    var s = \"00\" + num;\r\n    return s.substr(s.length - 3);\r\n}\r\n/**\r\n * Provides the DataSanitizer functions within the previous namespace.\r\n */\r\nexport var DataSanitizer = {\r\n    MAX_NAME_LENGTH: 150 /* MAX_NAME_LENGTH */,\r\n    MAX_ID_LENGTH: 128 /* MAX_ID_LENGTH */,\r\n    MAX_PROPERTY_LENGTH: 8192 /* MAX_PROPERTY_LENGTH */,\r\n    MAX_STRING_LENGTH: 1024 /* MAX_STRING_LENGTH */,\r\n    MAX_URL_LENGTH: 2048 /* MAX_URL_LENGTH */,\r\n    MAX_MESSAGE_LENGTH: 32768 /* MAX_MESSAGE_LENGTH */,\r\n    MAX_EXCEPTION_LENGTH: 32768 /* MAX_EXCEPTION_LENGTH */,\r\n    sanitizeKeyAndAddUniqueness: dataSanitizeKeyAndAddUniqueness,\r\n    sanitizeKey: dataSanitizeKey,\r\n    sanitizeString: dataSanitizeString,\r\n    sanitizeUrl: dataSanitizeUrl,\r\n    sanitizeMessage: dataSanitizeMessage,\r\n    sanitizeException: dataSanitizeException,\r\n    sanitizeProperties: dataSanitizeProperties,\r\n    sanitizeMeasurements: dataSanitizeMeasurements,\r\n    sanitizeId: dataSanitizeId,\r\n    sanitizeInput: dataSanitizeInput,\r\n    padNumber: dsPadNumber,\r\n    trim: strTrim\r\n};\r\n//# sourceMappingURL=DataSanitizer.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n// THIS FILE WAS AUTOGENERATED\r\n/**\r\n * Type of the metric data measurement.\r\n */\r\nexport var DataPointType;\r\n(function (DataPointType) {\r\n    DataPointType[DataPointType[\"Measurement\"] = 0] = \"Measurement\";\r\n    DataPointType[DataPointType[\"Aggregation\"] = 1] = \"Aggregation\";\r\n})(DataPointType || (DataPointType = {}));\r\n//# sourceMappingURL=DataPointType.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { dataSanitizeString } from \"./Telemetry/Common/DataSanitizer\";\r\nimport { objForEachKey, isNullOrUndefined, toISOString } from \"@microsoft/applicationinsights-core-js\";\r\nimport { strNotSpecified, strIkey } from \"./Constants\";\r\nvar TelemetryItemCreator = /** @class */ (function () {\r\n    function TelemetryItemCreator() {\r\n    }\r\n    /**\r\n     * Create a telemetry item that the 1DS channel understands\r\n     * @param item domain specific properties; part B\r\n     * @param baseType telemetry item type. ie PageViewData\r\n     * @param envelopeName name of the envelope. ie Microsoft.ApplicationInsights.<instrumentation key>.PageView\r\n     * @param customProperties user defined custom properties; part C\r\n     * @param systemProperties system properties that are added to the context; part A\r\n     * @returns ITelemetryItem that is sent to channel\r\n     */\r\n    TelemetryItemCreator.create = function (item, baseType, envelopeName, logger, customProperties, systemProperties) {\r\n        envelopeName = dataSanitizeString(logger, envelopeName) || strNotSpecified;\r\n        if (isNullOrUndefined(item) ||\r\n            isNullOrUndefined(baseType) ||\r\n            isNullOrUndefined(envelopeName)) {\r\n            throw Error(\"Input doesn't contain all required fields\");\r\n        }\r\n        var iKey = \"\";\r\n        if (item[strIkey]) {\r\n            iKey = item[strIkey];\r\n            delete item[strIkey];\r\n        }\r\n        var telemetryItem = {\r\n            name: envelopeName,\r\n            time: toISOString(new Date()),\r\n            iKey: iKey,\r\n            ext: systemProperties ? systemProperties : {},\r\n            tags: [],\r\n            data: {},\r\n            baseType: baseType,\r\n            baseData: item // Part B\r\n        };\r\n        // Part C\r\n        if (!isNullOrUndefined(customProperties)) {\r\n            objForEachKey(customProperties, function (prop, value) {\r\n                telemetryItem.data[prop] = value;\r\n            });\r\n        }\r\n        return telemetryItem;\r\n    };\r\n    return TelemetryItemCreator;\r\n}());\r\nexport { TelemetryItemCreator };\r\n//# sourceMappingURL=TelemetryItemCreator.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n/**\r\n * Instances of Event represent structured event records that can be grouped and searched by their properties. Event data item also creates a metric of event count by name.\r\n */\r\nvar EventData = /** @class */ (function () {\r\n    function EventData() {\r\n        /**\r\n         * Schema version\r\n         */\r\n        this.ver = 2;\r\n        /**\r\n         * Collection of custom properties.\r\n         */\r\n        this.properties = {};\r\n        /**\r\n         * Collection of custom measurements.\r\n         */\r\n        this.measurements = {};\r\n    }\r\n    return EventData;\r\n}());\r\nexport { EventData };\r\n//# sourceMappingURL=EventData.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { __extends } from \"tslib\";\r\nimport { EventData } from \"../Interfaces/Contracts/Generated/EventData\";\r\nimport { dataSanitizeString, dataSanitizeProperties, dataSanitizeMeasurements } from \"./Common/DataSanitizer\";\r\nimport { strNotSpecified } from \"../Constants\";\r\nvar Event = /** @class */ (function (_super) {\r\n    __extends(Event, _super);\r\n    /**\r\n     * Constructs a new instance of the EventTelemetry object\r\n     */\r\n    function Event(logger, name, properties, measurements) {\r\n        var _this = _super.call(this) || this;\r\n        _this.aiDataContract = {\r\n            ver: 1 /* Required */,\r\n            name: 1 /* Required */,\r\n            properties: 0 /* Default */,\r\n            measurements: 0 /* Default */\r\n        };\r\n        _this.name = dataSanitizeString(logger, name) || strNotSpecified;\r\n        _this.properties = dataSanitizeProperties(logger, properties);\r\n        _this.measurements = dataSanitizeMeasurements(logger, measurements);\r\n        return _this;\r\n    }\r\n    Event.envelopeType = \"Microsoft.ApplicationInsights.{0}.Event\";\r\n    Event.dataType = \"EventData\";\r\n    return Event;\r\n}(EventData));\r\nexport { Event };\r\n//# sourceMappingURL=Event.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { __extends } from \"tslib\";\r\nimport { MessageData } from \"../Interfaces/Contracts/Generated/MessageData\";\r\nimport { dataSanitizeMessage, dataSanitizeProperties, dataSanitizeMeasurements } from \"./Common/DataSanitizer\";\r\nimport { strNotSpecified } from \"../Constants\";\r\nvar Trace = /** @class */ (function (_super) {\r\n    __extends(Trace, _super);\r\n    /**\r\n     * Constructs a new instance of the TraceTelemetry object\r\n     */\r\n    function Trace(logger, message, severityLevel, properties, measurements) {\r\n        var _this = _super.call(this) || this;\r\n        _this.aiDataContract = {\r\n            ver: 1 /* Required */,\r\n            message: 1 /* Required */,\r\n            severityLevel: 0 /* Default */,\r\n            properties: 0 /* Default */\r\n        };\r\n        message = message || strNotSpecified;\r\n        _this.message = dataSanitizeMessage(logger, message);\r\n        _this.properties = dataSanitizeProperties(logger, properties);\r\n        _this.measurements = dataSanitizeMeasurements(logger, measurements);\r\n        if (severityLevel) {\r\n            _this.severityLevel = severityLevel;\r\n        }\r\n        return _this;\r\n    }\r\n    Trace.envelopeType = \"Microsoft.ApplicationInsights.{0}.Message\";\r\n    Trace.dataType = \"MessageData\";\r\n    return Trace;\r\n}(MessageData));\r\nexport { Trace };\r\n//# sourceMappingURL=Trace.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n/**\r\n * Instances of Message represent printf-like trace statements that are text-searched. Log4Net, NLog and other text-based log file entries are translated into intances of this type. The message does not have measurements.\r\n */\r\nvar MessageData = /** @class */ (function () {\r\n    function MessageData() {\r\n        /**\r\n         * Schema version\r\n         */\r\n        this.ver = 2;\r\n        /**\r\n         * Collection of custom properties.\r\n         */\r\n        this.properties = {};\r\n        /**\r\n         * Collection of custom measurements.\r\n         */\r\n        this.measurements = {};\r\n    }\r\n    return MessageData;\r\n}());\r\nexport { MessageData };\r\n//# sourceMappingURL=MessageData.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n/**\r\n * An instance of the Metric item is a list of measurements (single data points) and/or aggregations.\r\n */\r\nvar MetricData = /** @class */ (function () {\r\n    function MetricData() {\r\n        /**\r\n         * Schema version\r\n         */\r\n        this.ver = 2;\r\n        /**\r\n         * List of metrics. Only one metric in the list is currently supported by Application Insights storage. If multiple data points were sent only the first one will be used.\r\n         */\r\n        this.metrics = [];\r\n        /**\r\n         * Collection of custom properties.\r\n         */\r\n        this.properties = {};\r\n        /**\r\n         * Collection of custom measurements.\r\n         */\r\n        this.measurements = {};\r\n    }\r\n    return MetricData;\r\n}());\r\nexport { MetricData };\r\n//# sourceMappingURL=MetricData.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { __extends } from \"tslib\";\r\nimport { DataPoint as AIDataPoint } from \"../../Interfaces/Contracts/Generated/DataPoint\";\r\nvar DataPoint = /** @class */ (function (_super) {\r\n    __extends(DataPoint, _super);\r\n    function DataPoint() {\r\n        var _this = _super !== null && _super.apply(this, arguments) || this;\r\n        /**\r\n         * The data contract for serializing this object.\r\n         */\r\n        _this.aiDataContract = {\r\n            name: 1 /* Required */,\r\n            kind: 0 /* Default */,\r\n            value: 1 /* Required */,\r\n            count: 0 /* Default */,\r\n            min: 0 /* Default */,\r\n            max: 0 /* Default */,\r\n            stdDev: 0 /* Default */\r\n        };\r\n        return _this;\r\n    }\r\n    return DataPoint;\r\n}(AIDataPoint));\r\nexport { DataPoint };\r\n//# sourceMappingURL=DataPoint.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { __extends } from \"tslib\";\r\nimport { MetricData } from \"../Interfaces/Contracts/Generated/MetricData\";\r\nimport { dataSanitizeMeasurements, dataSanitizeProperties, dataSanitizeString } from \"./Common/DataSanitizer\";\r\nimport { DataPoint } from \"./Common/DataPoint\";\r\nimport { strNotSpecified } from \"../Constants\";\r\nvar Metric = /** @class */ (function (_super) {\r\n    __extends(Metric, _super);\r\n    /**\r\n     * Constructs a new instance of the MetricTelemetry object\r\n     */\r\n    function Metric(logger, name, value, count, min, max, stdDev, properties, measurements) {\r\n        var _this = _super.call(this) || this;\r\n        _this.aiDataContract = {\r\n            ver: 1 /* Required */,\r\n            metrics: 1 /* Required */,\r\n            properties: 0 /* Default */\r\n        };\r\n        var dataPoint = new DataPoint();\r\n        dataPoint.count = count > 0 ? count : undefined;\r\n        dataPoint.max = isNaN(max) || max === null ? undefined : max;\r\n        dataPoint.min = isNaN(min) || min === null ? undefined : min;\r\n        dataPoint.name = dataSanitizeString(logger, name) || strNotSpecified;\r\n        dataPoint.value = value;\r\n        dataPoint.stdDev = isNaN(stdDev) || stdDev === null ? undefined : stdDev;\r\n        _this.metrics = [dataPoint];\r\n        _this.properties = dataSanitizeProperties(logger, properties);\r\n        _this.measurements = dataSanitizeMeasurements(logger, measurements);\r\n        return _this;\r\n    }\r\n    Metric.envelopeType = \"Microsoft.ApplicationInsights.{0}.Metric\";\r\n    Metric.dataType = \"MetricData\";\r\n    return Metric;\r\n}(MetricData));\r\nexport { Metric };\r\n//# sourceMappingURL=Metric.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { __extends } from \"tslib\";\r\n// THIS FILE WAS AUTOGENERATED\r\nimport { EventData } from \"./EventData\";\r\n/**\r\n * An instance of PageView represents a generic action on a page like a button click. It is also the base type for PageView.\r\n */\r\nvar PageViewData = /** @class */ (function (_super) {\r\n    __extends(PageViewData, _super);\r\n    function PageViewData() {\r\n        var _this = _super.call(this) || this;\r\n        /**\r\n         * Schema version\r\n         */\r\n        _this.ver = 2;\r\n        /**\r\n         * Collection of custom properties.\r\n         */\r\n        _this.properties = {};\r\n        /**\r\n         * Collection of custom measurements.\r\n         */\r\n        _this.measurements = {};\r\n        return _this;\r\n    }\r\n    return PageViewData;\r\n}(EventData));\r\nexport { PageViewData };\r\n//# sourceMappingURL=PageViewData.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { __extends } from \"tslib\";\r\nimport { PageViewData } from \"../Interfaces/Contracts/Generated/PageViewData\";\r\nimport { dataSanitizeId, dataSanitizeMeasurements, dataSanitizeProperties, dataSanitizeString, dataSanitizeUrl } from \"./Common/DataSanitizer\";\r\nimport { msToTimeSpan } from \"../HelperFuncs\";\r\nimport { strNotSpecified } from \"../Constants\";\r\nvar PageView = /** @class */ (function (_super) {\r\n    __extends(PageView, _super);\r\n    /**\r\n     * Constructs a new instance of the PageEventTelemetry object\r\n     */\r\n    function PageView(logger, name, url, durationMs, properties, measurements, id) {\r\n        var _this = _super.call(this) || this;\r\n        _this.aiDataContract = {\r\n            ver: 1 /* Required */,\r\n            name: 0 /* Default */,\r\n            url: 0 /* Default */,\r\n            duration: 0 /* Default */,\r\n            properties: 0 /* Default */,\r\n            measurements: 0 /* Default */,\r\n            id: 0 /* Default */\r\n        };\r\n        _this.id = dataSanitizeId(logger, id);\r\n        _this.url = dataSanitizeUrl(logger, url);\r\n        _this.name = dataSanitizeString(logger, name) || strNotSpecified;\r\n        if (!isNaN(durationMs)) {\r\n            _this.duration = msToTimeSpan(durationMs);\r\n        }\r\n        _this.properties = dataSanitizeProperties(logger, properties);\r\n        _this.measurements = dataSanitizeMeasurements(logger, measurements);\r\n        return _this;\r\n    }\r\n    PageView.envelopeType = \"Microsoft.ApplicationInsights.{0}.Pageview\";\r\n    PageView.dataType = \"PageviewData\";\r\n    return PageView;\r\n}(PageViewData));\r\nexport { PageView };\r\n//# sourceMappingURL=PageView.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { __extends } from \"tslib\";\r\nimport { PageViewPerfData } from \"../Interfaces/Contracts/Generated/PageViewPerfData\";\r\nimport { dataSanitizeMeasurements, dataSanitizeProperties, dataSanitizeString, dataSanitizeUrl } from \"./Common/DataSanitizer\";\r\nimport { strNotSpecified } from \"../Constants\";\r\nvar PageViewPerformance = /** @class */ (function (_super) {\r\n    __extends(PageViewPerformance, _super);\r\n    /**\r\n     * Constructs a new instance of the PageEventTelemetry object\r\n     */\r\n    function PageViewPerformance(logger, name, url, unused, properties, measurements, cs4BaseData) {\r\n        var _this = _super.call(this) || this;\r\n        _this.aiDataContract = {\r\n            ver: 1 /* Required */,\r\n            name: 0 /* Default */,\r\n            url: 0 /* Default */,\r\n            duration: 0 /* Default */,\r\n            perfTotal: 0 /* Default */,\r\n            networkConnect: 0 /* Default */,\r\n            sentRequest: 0 /* Default */,\r\n            receivedResponse: 0 /* Default */,\r\n            domProcessing: 0 /* Default */,\r\n            properties: 0 /* Default */,\r\n            measurements: 0 /* Default */\r\n        };\r\n        _this.url = dataSanitizeUrl(logger, url);\r\n        _this.name = dataSanitizeString(logger, name) || strNotSpecified;\r\n        _this.properties = dataSanitizeProperties(logger, properties);\r\n        _this.measurements = dataSanitizeMeasurements(logger, measurements);\r\n        if (cs4BaseData) {\r\n            _this.domProcessing = cs4BaseData.domProcessing;\r\n            _this.duration = cs4BaseData.duration;\r\n            _this.networkConnect = cs4BaseData.networkConnect;\r\n            _this.perfTotal = cs4BaseData.perfTotal;\r\n            _this.receivedResponse = cs4BaseData.receivedResponse;\r\n            _this.sentRequest = cs4BaseData.sentRequest;\r\n        }\r\n        return _this;\r\n    }\r\n    PageViewPerformance.envelopeType = \"Microsoft.ApplicationInsights.{0}.PageviewPerformance\";\r\n    PageViewPerformance.dataType = \"PageviewPerformanceData\";\r\n    return PageViewPerformance;\r\n}(PageViewPerfData));\r\nexport { PageViewPerformance };\r\n//# sourceMappingURL=PageViewPerformance.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { __extends } from \"tslib\";\r\n// THIS FILE WAS AUTOGENERATED\r\nimport { PageViewData } from \"./PageViewData\";\r\n/**\r\n * An instance of PageViewPerf represents: a page view with no performance data, a page view with performance data, or just the performance data of an earlier page request.\r\n */\r\nvar PageViewPerfData = /** @class */ (function (_super) {\r\n    __extends(PageViewPerfData, _super);\r\n    function PageViewPerfData() {\r\n        var _this = _super.call(this) || this;\r\n        /**\r\n         * Schema version\r\n         */\r\n        _this.ver = 2;\r\n        /**\r\n         * Collection of custom properties.\r\n         */\r\n        _this.properties = {};\r\n        /**\r\n         * Collection of custom measurements.\r\n         */\r\n        _this.measurements = {};\r\n        return _this;\r\n    }\r\n    return PageViewPerfData;\r\n}(PageViewData));\r\nexport { PageViewPerfData };\r\n//# sourceMappingURL=PageViewPerfData.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n// THIS FILE WAS AUTOGENERATED\r\n/**\r\n * Stack frame information.\r\n */\r\nvar StackFrame = /** @class */ (function () {\r\n    function StackFrame() {\r\n    }\r\n    return StackFrame;\r\n}());\r\nexport { StackFrame };\r\n//# sourceMappingURL=StackFrame.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n/**\r\n * Exception details of the exception in a chain.\r\n */\r\nvar ExceptionDetails = /** @class */ (function () {\r\n    function ExceptionDetails() {\r\n        /**\r\n         * Indicates if full exception stack is provided in the exception. The stack may be trimmed, such as in the case of a StackOverflow exception.\r\n         */\r\n        this.hasFullStack = true;\r\n        /**\r\n         * List of stack frames. Either stack or parsedStack should have a value.\r\n         */\r\n        this.parsedStack = [];\r\n    }\r\n    return ExceptionDetails;\r\n}());\r\nexport { ExceptionDetails };\r\n//# sourceMappingURL=ExceptionDetails.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { __assign, __extends } from \"tslib\";\r\nimport { StackFrame } from \"../Interfaces/Contracts/Generated/StackFrame\";\r\nimport { ExceptionData } from \"../Interfaces/Contracts/Generated/ExceptionData\";\r\nimport { ExceptionDetails } from \"../Interfaces/Contracts/Generated/ExceptionDetails\";\r\nimport { dataSanitizeException, dataSanitizeMeasurements, dataSanitizeMessage, dataSanitizeProperties, dataSanitizeString } from \"./Common/DataSanitizer\";\r\nimport { isNullOrUndefined, arrMap, isString, strTrim, isArray, isError, arrForEach, isObject, isFunction } from \"@microsoft/applicationinsights-core-js\";\r\nimport { strNotSpecified } from \"../Constants\";\r\nvar NoMethod = \"<no_method>\";\r\nvar strError = \"error\";\r\nvar strStack = \"stack\";\r\nvar strStackDetails = \"stackDetails\";\r\nvar strErrorSrc = \"errorSrc\";\r\nvar strMessage = \"message\";\r\nvar strDescription = \"description\";\r\nfunction _stringify(value, convertToString) {\r\n    var result = value;\r\n    if (result && !isString(result)) {\r\n        if (JSON && JSON.stringify) {\r\n            result = JSON.stringify(value);\r\n            if (convertToString && (!result || result === \"{}\")) {\r\n                if (isFunction(value.toString)) {\r\n                    result = value.toString();\r\n                }\r\n                else {\r\n                    result = \"\" + value;\r\n                }\r\n            }\r\n        }\r\n        else {\r\n            result = \"\" + value + \" - (Missing JSON.stringify)\";\r\n        }\r\n    }\r\n    return result || \"\";\r\n}\r\nfunction _formatMessage(theEvent, errorType) {\r\n    var evtMessage = theEvent;\r\n    if (theEvent) {\r\n        if (evtMessage && !isString(evtMessage)) {\r\n            evtMessage = theEvent[strMessage] || theEvent[strDescription] || evtMessage;\r\n        }\r\n        // Make sure the message is a string\r\n        if (evtMessage && !isString(evtMessage)) {\r\n            // tslint:disable-next-line: prefer-conditional-expression\r\n            evtMessage = _stringify(evtMessage, true);\r\n        }\r\n        if (theEvent[\"filename\"]) {\r\n            // Looks like an event object with filename\r\n            evtMessage = evtMessage + \" @\" + (theEvent[\"filename\"] || \"\") + \":\" + (theEvent[\"lineno\"] || \"?\") + \":\" + (theEvent[\"colno\"] || \"?\");\r\n        }\r\n    }\r\n    // Automatically add the error type to the message if it does already appear to be present\r\n    if (errorType && errorType !== \"String\" && errorType !== \"Object\" && errorType !== \"Error\" && (evtMessage || \"\").indexOf(errorType) === -1) {\r\n        evtMessage = errorType + \": \" + evtMessage;\r\n    }\r\n    return evtMessage || \"\";\r\n}\r\nfunction _isExceptionDetailsInternal(value) {\r\n    try {\r\n        if (isObject(value)) {\r\n            return \"hasFullStack\" in value && \"typeName\" in value;\r\n        }\r\n    }\r\n    catch (e) {\r\n        // This can happen with some native browser objects, but should not happen for the type we are checking for\r\n    }\r\n    return false;\r\n}\r\nfunction _isExceptionInternal(value) {\r\n    try {\r\n        if (isObject(value)) {\r\n            return (\"ver\" in value && \"exceptions\" in value && \"properties\" in value);\r\n        }\r\n    }\r\n    catch (e) {\r\n        // This can happen with some native browser objects, but should not happen for the type we are checking for\r\n    }\r\n    return false;\r\n}\r\nfunction _isStackDetails(details) {\r\n    return details && details.src && isString(details.src) && details.obj && isArray(details.obj);\r\n}\r\nfunction _convertStackObj(errorStack) {\r\n    var src = errorStack || \"\";\r\n    if (!isString(src)) {\r\n        if (isString(src[strStack])) {\r\n            src = src[strStack];\r\n        }\r\n        else {\r\n            src = \"\" + src;\r\n        }\r\n    }\r\n    var items = src.split(\"\\n\");\r\n    return {\r\n        src: src,\r\n        obj: items\r\n    };\r\n}\r\nfunction _getOperaStack(errorMessage) {\r\n    var stack = [];\r\n    var lines = errorMessage.split(\"\\n\");\r\n    for (var lp = 0; lp < lines.length; lp++) {\r\n        var entry = lines[lp];\r\n        if (lines[lp + 1]) {\r\n            entry += \"@\" + lines[lp + 1];\r\n            lp++;\r\n        }\r\n        stack.push(entry);\r\n    }\r\n    return {\r\n        src: errorMessage,\r\n        obj: stack\r\n    };\r\n}\r\nfunction _getStackFromErrorObj(errorObj) {\r\n    var details = null;\r\n    if (errorObj) {\r\n        try {\r\n            /* Using bracket notation is support older browsers (IE 7/8 -- dont remember the version) that throw when using dot\r\n            notation for undefined objects and we don't want to loose the error from being reported */\r\n            if (errorObj[strStack]) {\r\n                // Chrome/Firefox\r\n                details = _convertStackObj(errorObj[strStack]);\r\n            }\r\n            else if (errorObj[strError] && errorObj[strError][strStack]) {\r\n                // Edge error event provides the stack and error object\r\n                details = _convertStackObj(errorObj[strError][strStack]);\r\n            }\r\n            else if (errorObj[\"exception\"] && errorObj.exception[strStack]) {\r\n                details = _convertStackObj(errorObj.exception[strStack]);\r\n            }\r\n            else if (_isStackDetails(errorObj)) {\r\n                details = errorObj;\r\n            }\r\n            else if (_isStackDetails(errorObj[strStackDetails])) {\r\n                details = errorObj[strStackDetails];\r\n            }\r\n            else if (window[\"opera\"] && errorObj[strMessage]) {\r\n                // Opera\r\n                details = _getOperaStack(errorObj.message);\r\n            }\r\n            else if (isString(errorObj)) {\r\n                details = _convertStackObj(errorObj);\r\n            }\r\n            else {\r\n                var evtMessage = errorObj[strMessage] || errorObj[strDescription] || \"\";\r\n                if (isString(errorObj[strErrorSrc])) {\r\n                    if (evtMessage) {\r\n                        evtMessage += \"\\n\";\r\n                    }\r\n                    evtMessage += \" from \" + errorObj[strErrorSrc];\r\n                }\r\n                if (evtMessage) {\r\n                    details = _convertStackObj(evtMessage);\r\n                }\r\n            }\r\n        }\r\n        catch (e) {\r\n            // something unexpected happened so to avoid failing to report any error lets swallow the exception\r\n            // and fallback to the callee/caller method\r\n            details = _convertStackObj(e);\r\n        }\r\n    }\r\n    return details || {\r\n        src: \"\",\r\n        obj: null\r\n    };\r\n}\r\nfunction _formatStackTrace(stackDetails) {\r\n    var stack = \"\";\r\n    if (stackDetails) {\r\n        if (stackDetails.obj) {\r\n            arrForEach(stackDetails.obj, function (entry) {\r\n                stack += entry + \"\\n\";\r\n            });\r\n        }\r\n        else {\r\n            stack = stackDetails.src || \"\";\r\n        }\r\n    }\r\n    return stack;\r\n}\r\nfunction _parseStack(stack) {\r\n    var parsedStack;\r\n    var frames = stack.obj;\r\n    if (frames && frames.length > 0) {\r\n        parsedStack = [];\r\n        var level_1 = 0;\r\n        var totalSizeInBytes_1 = 0;\r\n        arrForEach(frames, function (frame) {\r\n            var theFrame = frame.toString();\r\n            if (_StackFrame.regex.test(theFrame)) {\r\n                var parsedFrame = new _StackFrame(theFrame, level_1++);\r\n                totalSizeInBytes_1 += parsedFrame.sizeInBytes;\r\n                parsedStack.push(parsedFrame);\r\n            }\r\n        });\r\n        // DP Constraint - exception parsed stack must be < 32KB\r\n        // remove frames from the middle to meet the threshold\r\n        var exceptionParsedStackThreshold = 32 * 1024;\r\n        if (totalSizeInBytes_1 > exceptionParsedStackThreshold) {\r\n            var left = 0;\r\n            var right = parsedStack.length - 1;\r\n            var size = 0;\r\n            var acceptedLeft = left;\r\n            var acceptedRight = right;\r\n            while (left < right) {\r\n                // check size\r\n                var lSize = parsedStack[left].sizeInBytes;\r\n                var rSize = parsedStack[right].sizeInBytes;\r\n                size += lSize + rSize;\r\n                if (size > exceptionParsedStackThreshold) {\r\n                    // remove extra frames from the middle\r\n                    var howMany = acceptedRight - acceptedLeft + 1;\r\n                    parsedStack.splice(acceptedLeft, howMany);\r\n                    break;\r\n                }\r\n                // update pointers\r\n                acceptedLeft = left;\r\n                acceptedRight = right;\r\n                left++;\r\n                right--;\r\n            }\r\n        }\r\n    }\r\n    return parsedStack;\r\n}\r\nfunction _getErrorType(errorType) {\r\n    // Gets the Error Type by passing the constructor (used to get the true type of native error object).\r\n    var typeName = \"\";\r\n    if (errorType) {\r\n        typeName = errorType.typeName || errorType.name || \"\";\r\n        if (!typeName) {\r\n            try {\r\n                var funcNameRegex = /function (.{1,200})\\(/;\r\n                var results = (funcNameRegex).exec((errorType).constructor.toString());\r\n                typeName = (results && results.length > 1) ? results[1] : \"\";\r\n            }\r\n            catch (e) {\r\n                // eslint-disable-next-line no-empty -- Ignoring any failures as nothing we can do\r\n            }\r\n        }\r\n    }\r\n    return typeName;\r\n}\r\n/**\r\n * Formats the provided errorObj for display and reporting, it may be a String, Object, integer or undefined depending on the browser.\r\n * @param errorObj The supplied errorObj\r\n */\r\nexport function _formatErrorCode(errorObj) {\r\n    if (errorObj) {\r\n        try {\r\n            if (!isString(errorObj)) {\r\n                var errorType = _getErrorType(errorObj);\r\n                var result = _stringify(errorObj, false);\r\n                if (!result || result === \"{}\") {\r\n                    if (errorObj[strError]) {\r\n                        // Looks like an MS Error Event\r\n                        errorObj = errorObj[strError];\r\n                        errorType = _getErrorType(errorObj);\r\n                    }\r\n                    result = _stringify(errorObj, true);\r\n                }\r\n                if (result.indexOf(errorType) !== 0 && errorType !== \"String\") {\r\n                    return errorType + \":\" + result;\r\n                }\r\n                return result;\r\n            }\r\n        }\r\n        catch (e) {\r\n            // eslint-disable-next-line no-empty -- Ignoring any failures as nothing we can do\r\n        }\r\n    }\r\n    // Fallback to just letting the object format itself into a string\r\n    return \"\" + (errorObj || \"\");\r\n}\r\nvar Exception = /** @class */ (function (_super) {\r\n    __extends(Exception, _super);\r\n    /**\r\n     * Constructs a new instance of the ExceptionTelemetry object\r\n     */\r\n    function Exception(logger, exception, properties, measurements, severityLevel, id) {\r\n        var _this = _super.call(this) || this;\r\n        _this.aiDataContract = {\r\n            ver: 1 /* Required */,\r\n            exceptions: 1 /* Required */,\r\n            severityLevel: 0 /* Default */,\r\n            properties: 0 /* Default */,\r\n            measurements: 0 /* Default */\r\n        };\r\n        if (!_isExceptionInternal(exception)) {\r\n            if (!properties) {\r\n                properties = {};\r\n            }\r\n            _this.exceptions = [new _ExceptionDetails(logger, exception, properties)];\r\n            _this.properties = dataSanitizeProperties(logger, properties);\r\n            _this.measurements = dataSanitizeMeasurements(logger, measurements);\r\n            if (severityLevel) {\r\n                _this.severityLevel = severityLevel;\r\n            }\r\n            if (id) {\r\n                _this.id = id;\r\n            }\r\n        }\r\n        else {\r\n            _this.exceptions = exception.exceptions;\r\n            _this.properties = exception.properties;\r\n            _this.measurements = exception.measurements;\r\n            if (exception.severityLevel) {\r\n                _this.severityLevel = exception.severityLevel;\r\n            }\r\n            if (exception.id) {\r\n                _this.id = exception.id;\r\n            }\r\n            if (exception.problemGroup) {\r\n                _this.problemGroup = exception.problemGroup;\r\n            }\r\n            // bool/int types, use isNullOrUndefined\r\n            _this.ver = 2; // TODO: handle the CS\"4.0\" ==> breeze 2 conversion in a better way\r\n            if (!isNullOrUndefined(exception.isManual)) {\r\n                _this.isManual = exception.isManual;\r\n            }\r\n        }\r\n        return _this;\r\n    }\r\n    Exception.CreateAutoException = function (message, url, lineNumber, columnNumber, error, evt, stack, errorSrc) {\r\n        var errorType = _getErrorType(error || evt || message);\r\n        return {\r\n            message: _formatMessage(message, errorType),\r\n            url: url,\r\n            lineNumber: lineNumber,\r\n            columnNumber: columnNumber,\r\n            error: _formatErrorCode(error || evt || message),\r\n            evt: _formatErrorCode(evt || message),\r\n            typeName: errorType,\r\n            stackDetails: _getStackFromErrorObj(stack || error || evt),\r\n            errorSrc: errorSrc\r\n        };\r\n    };\r\n    Exception.CreateFromInterface = function (logger, exception, properties, measurements) {\r\n        var exceptions = exception.exceptions\r\n            && arrMap(exception.exceptions, function (ex) { return _ExceptionDetails.CreateFromInterface(logger, ex); });\r\n        var exceptionData = new Exception(logger, __assign(__assign({}, exception), { exceptions: exceptions }), properties, measurements);\r\n        return exceptionData;\r\n    };\r\n    Exception.prototype.toInterface = function () {\r\n        var _a = this, exceptions = _a.exceptions, properties = _a.properties, measurements = _a.measurements, severityLevel = _a.severityLevel, ver = _a.ver, problemGroup = _a.problemGroup, id = _a.id, isManual = _a.isManual;\r\n        var exceptionDetailsInterface = exceptions instanceof Array\r\n            && arrMap(exceptions, function (exception) { return exception.toInterface(); })\r\n            || undefined;\r\n        return {\r\n            ver: \"4.0\",\r\n            exceptions: exceptionDetailsInterface,\r\n            severityLevel: severityLevel,\r\n            properties: properties,\r\n            measurements: measurements,\r\n            problemGroup: problemGroup,\r\n            id: id,\r\n            isManual: isManual\r\n        };\r\n    };\r\n    /**\r\n     * Creates a simple exception with 1 stack frame. Useful for manual constracting of exception.\r\n     */\r\n    Exception.CreateSimpleException = function (message, typeName, assembly, fileName, details, line) {\r\n        return {\r\n            exceptions: [\r\n                {\r\n                    hasFullStack: true,\r\n                    message: message,\r\n                    stack: details,\r\n                    typeName: typeName\r\n                }\r\n            ]\r\n        };\r\n    };\r\n    Exception.envelopeType = \"Microsoft.ApplicationInsights.{0}.Exception\";\r\n    Exception.dataType = \"ExceptionData\";\r\n    Exception.formatError = _formatErrorCode;\r\n    return Exception;\r\n}(ExceptionData));\r\nexport { Exception };\r\nvar _ExceptionDetails = /** @class */ (function (_super) {\r\n    __extends(_ExceptionDetails, _super);\r\n    function _ExceptionDetails(logger, exception, properties) {\r\n        var _this = _super.call(this) || this;\r\n        _this.aiDataContract = {\r\n            id: 0 /* Default */,\r\n            outerId: 0 /* Default */,\r\n            typeName: 1 /* Required */,\r\n            message: 1 /* Required */,\r\n            hasFullStack: 0 /* Default */,\r\n            stack: 0 /* Default */,\r\n            parsedStack: 2 /* Array */\r\n        };\r\n        if (!_isExceptionDetailsInternal(exception)) {\r\n            var error = exception;\r\n            var evt = error && error.evt;\r\n            if (!isError(error)) {\r\n                error = error[strError] || evt || error;\r\n            }\r\n            _this.typeName = dataSanitizeString(logger, _getErrorType(error)) || strNotSpecified;\r\n            _this.message = dataSanitizeMessage(logger, _formatMessage(exception || error, _this.typeName)) || strNotSpecified;\r\n            var stack = exception[strStackDetails] || _getStackFromErrorObj(exception);\r\n            _this.parsedStack = _parseStack(stack);\r\n            _this[strStack] = dataSanitizeException(logger, _formatStackTrace(stack));\r\n            _this.hasFullStack = isArray(_this.parsedStack) && _this.parsedStack.length > 0;\r\n            if (properties) {\r\n                properties.typeName = properties.typeName || _this.typeName;\r\n            }\r\n        }\r\n        else {\r\n            _this.typeName = exception.typeName;\r\n            _this.message = exception.message;\r\n            _this[strStack] = exception[strStack];\r\n            _this.parsedStack = exception.parsedStack;\r\n            _this.hasFullStack = exception.hasFullStack;\r\n        }\r\n        return _this;\r\n    }\r\n    _ExceptionDetails.prototype.toInterface = function () {\r\n        var parsedStack = this.parsedStack instanceof Array\r\n            && arrMap(this.parsedStack, function (frame) { return frame.toInterface(); });\r\n        var exceptionDetailsInterface = {\r\n            id: this.id,\r\n            outerId: this.outerId,\r\n            typeName: this.typeName,\r\n            message: this.message,\r\n            hasFullStack: this.hasFullStack,\r\n            stack: this[strStack],\r\n            parsedStack: parsedStack || undefined\r\n        };\r\n        return exceptionDetailsInterface;\r\n    };\r\n    _ExceptionDetails.CreateFromInterface = function (logger, exception) {\r\n        var parsedStack = (exception.parsedStack instanceof Array\r\n            && arrMap(exception.parsedStack, function (frame) { return _StackFrame.CreateFromInterface(frame); }))\r\n            || exception.parsedStack;\r\n        var exceptionDetails = new _ExceptionDetails(logger, __assign(__assign({}, exception), { parsedStack: parsedStack }));\r\n        return exceptionDetails;\r\n    };\r\n    return _ExceptionDetails;\r\n}(ExceptionDetails));\r\nexport { _ExceptionDetails };\r\nvar _StackFrame = /** @class */ (function (_super) {\r\n    __extends(_StackFrame, _super);\r\n    function _StackFrame(sourceFrame, level) {\r\n        var _this = _super.call(this) || this;\r\n        _this.sizeInBytes = 0;\r\n        _this.aiDataContract = {\r\n            level: 1 /* Required */,\r\n            method: 1 /* Required */,\r\n            assembly: 0 /* Default */,\r\n            fileName: 0 /* Default */,\r\n            line: 0 /* Default */\r\n        };\r\n        // Not converting this to isString() as typescript uses this logic to \"understand\" the different\r\n        // types for the 2 different code paths\r\n        if (typeof sourceFrame === \"string\") {\r\n            var frame = sourceFrame;\r\n            _this.level = level;\r\n            _this.method = NoMethod;\r\n            _this.assembly = strTrim(frame);\r\n            _this.fileName = \"\";\r\n            _this.line = 0;\r\n            var matches = frame.match(_StackFrame.regex);\r\n            if (matches && matches.length >= 5) {\r\n                _this.method = strTrim(matches[2]) || _this.method;\r\n                _this.fileName = strTrim(matches[4]);\r\n                _this.line = parseInt(matches[5]) || 0;\r\n            }\r\n        }\r\n        else {\r\n            _this.level = sourceFrame.level;\r\n            _this.method = sourceFrame.method;\r\n            _this.assembly = sourceFrame.assembly;\r\n            _this.fileName = sourceFrame.fileName;\r\n            _this.line = sourceFrame.line;\r\n            _this.sizeInBytes = 0;\r\n        }\r\n        _this.sizeInBytes += _this.method.length;\r\n        _this.sizeInBytes += _this.fileName.length;\r\n        _this.sizeInBytes += _this.assembly.length;\r\n        // todo: these might need to be removed depending on how the back-end settles on their size calculation\r\n        _this.sizeInBytes += _StackFrame.baseSize;\r\n        _this.sizeInBytes += _this.level.toString().length;\r\n        _this.sizeInBytes += _this.line.toString().length;\r\n        return _this;\r\n    }\r\n    _StackFrame.CreateFromInterface = function (frame) {\r\n        return new _StackFrame(frame, null /* level is available in frame interface */);\r\n    };\r\n    _StackFrame.prototype.toInterface = function () {\r\n        return {\r\n            level: this.level,\r\n            method: this.method,\r\n            assembly: this.assembly,\r\n            fileName: this.fileName,\r\n            line: this.line\r\n        };\r\n    };\r\n    // regex to match stack frames from ie/chrome/ff\r\n    // methodName=$2, fileName=$4, lineNo=$5, column=$6\r\n    _StackFrame.regex = /^([\\s]+at)?[\\s]{0,50}([^\\@\\()]+?)[\\s]{0,50}(\\@|\\()([^\\(\\n]+):([0-9]+):([0-9]+)(\\)?)$/;\r\n    _StackFrame.baseSize = 58; // '{\"method\":\"\",\"level\":,\"assembly\":\"\",\"fileName\":\"\",\"line\":}'.length\r\n    return _StackFrame;\r\n}(StackFrame));\r\nexport { _StackFrame };\r\n//# sourceMappingURL=Exception.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n// THIS FILE WAS AUTOGENERATED\r\n/**\r\n * Defines the level of severity for the event.\r\n */\r\nexport var SeverityLevel;\r\n(function (SeverityLevel) {\r\n    SeverityLevel[SeverityLevel[\"Verbose\"] = 0] = \"Verbose\";\r\n    SeverityLevel[SeverityLevel[\"Information\"] = 1] = \"Information\";\r\n    SeverityLevel[SeverityLevel[\"Warning\"] = 2] = \"Warning\";\r\n    SeverityLevel[SeverityLevel[\"Error\"] = 3] = \"Error\";\r\n    SeverityLevel[SeverityLevel[\"Critical\"] = 4] = \"Critical\";\r\n})(SeverityLevel || (SeverityLevel = {}));\r\n//# sourceMappingURL=SeverityLevel.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n/**\r\n * Type of storage to differentiate between local storage and session storage\r\n */\r\nexport var StorageType;\r\n(function (StorageType) {\r\n    StorageType[StorageType[\"LocalStorage\"] = 0] = \"LocalStorage\";\r\n    StorageType[StorageType[\"SessionStorage\"] = 1] = \"SessionStorage\";\r\n})(StorageType || (StorageType = {}));\r\nexport var DistributedTracingModes;\r\n(function (DistributedTracingModes) {\r\n    /**\r\n     * (Default) Send Application Insights correlation headers\r\n     */\r\n    DistributedTracingModes[DistributedTracingModes[\"AI\"] = 0] = \"AI\";\r\n    /**\r\n     * Send both W3C Trace Context headers and back-compatibility Application Insights headers\r\n     */\r\n    DistributedTracingModes[DistributedTracingModes[\"AI_AND_W3C\"] = 1] = \"AI_AND_W3C\";\r\n    /**\r\n     * Send W3C Trace Context headers\r\n     */\r\n    DistributedTracingModes[DistributedTracingModes[\"W3C\"] = 2] = \"W3C\";\r\n})(DistributedTracingModes || (DistributedTracingModes = {}));\r\n//# sourceMappingURL=Enums.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n/**\r\n * An instance of Exception represents a handled or unhandled exception that occurred during execution of the monitored application.\r\n */\r\nvar ExceptionData = /** @class */ (function () {\r\n    function ExceptionData() {\r\n        /**\r\n         * Schema version\r\n         */\r\n        this.ver = 2;\r\n        /**\r\n         * Exception chain - list of inner exceptions.\r\n         */\r\n        this.exceptions = [];\r\n        /**\r\n         * Collection of custom properties.\r\n         */\r\n        this.properties = {};\r\n        /**\r\n         * Collection of custom measurements.\r\n         */\r\n        this.measurements = {};\r\n    }\r\n    return ExceptionData;\r\n}());\r\nexport { ExceptionData };\r\n//# sourceMappingURL=ExceptionData.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { dumpObj, getExceptionName, getGlobal, getGlobalInst, isNullOrUndefined, LoggingSeverity, objForEachKey, _InternalMessageId } from \"@microsoft/applicationinsights-core-js\";\r\nimport { StorageType } from \"./Enums\";\r\nvar _canUseLocalStorage = undefined;\r\nvar _canUseSessionStorage = undefined;\r\n/**\r\n * Gets the localStorage object if available\r\n * @return {Storage} - Returns the storage object if available else returns null\r\n */\r\nfunction _getLocalStorageObject() {\r\n    if (utlCanUseLocalStorage()) {\r\n        return _getVerifiedStorageObject(StorageType.LocalStorage);\r\n    }\r\n    return null;\r\n}\r\n/**\r\n * Tests storage object (localStorage or sessionStorage) to verify that it is usable\r\n * More details here: https://mathiasbynens.be/notes/localstorage-pattern\r\n * @param storageType Type of storage\r\n * @return {Storage} Returns storage object verified that it is usable\r\n */\r\nfunction _getVerifiedStorageObject(storageType) {\r\n    try {\r\n        if (isNullOrUndefined(getGlobal())) {\r\n            return null;\r\n        }\r\n        var uid = new Date;\r\n        var storage = getGlobalInst(storageType === StorageType.LocalStorage ? \"localStorage\" : \"sessionStorage\");\r\n        storage.setItem(uid.toString(), uid.toString());\r\n        var fail = storage.getItem(uid.toString()) !== uid.toString();\r\n        storage.removeItem(uid.toString());\r\n        if (!fail) {\r\n            return storage;\r\n        }\r\n    }\r\n    catch (exception) {\r\n        // eslint-disable-next-line no-empty\r\n    }\r\n    return null;\r\n}\r\n/**\r\n * Gets the sessionStorage object if available\r\n * @return {Storage} - Returns the storage object if available else returns null\r\n */\r\nfunction _getSessionStorageObject() {\r\n    if (utlCanUseSessionStorage()) {\r\n        return _getVerifiedStorageObject(StorageType.SessionStorage);\r\n    }\r\n    return null;\r\n}\r\nexport function utlDisableStorage() {\r\n    _canUseLocalStorage = false;\r\n    _canUseSessionStorage = false;\r\n}\r\nexport function utlCanUseLocalStorage() {\r\n    if (_canUseLocalStorage === undefined) {\r\n        _canUseLocalStorage = !!_getVerifiedStorageObject(StorageType.LocalStorage);\r\n    }\r\n    return _canUseLocalStorage;\r\n}\r\nexport function utlGetLocalStorage(logger, name) {\r\n    var storage = _getLocalStorageObject();\r\n    if (storage !== null) {\r\n        try {\r\n            return storage.getItem(name);\r\n        }\r\n        catch (e) {\r\n            _canUseLocalStorage = false;\r\n            logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.BrowserCannotReadLocalStorage, \"Browser failed read of local storage. \" + getExceptionName(e), { exception: dumpObj(e) });\r\n        }\r\n    }\r\n    return null;\r\n}\r\nexport function utlSetLocalStorage(logger, name, data) {\r\n    var storage = _getLocalStorageObject();\r\n    if (storage !== null) {\r\n        try {\r\n            storage.setItem(name, data);\r\n            return true;\r\n        }\r\n        catch (e) {\r\n            _canUseLocalStorage = false;\r\n            logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.BrowserCannotWriteLocalStorage, \"Browser failed write to local storage. \" + getExceptionName(e), { exception: dumpObj(e) });\r\n        }\r\n    }\r\n    return false;\r\n}\r\nexport function utlRemoveStorage(logger, name) {\r\n    var storage = _getLocalStorageObject();\r\n    if (storage !== null) {\r\n        try {\r\n            storage.removeItem(name);\r\n            return true;\r\n        }\r\n        catch (e) {\r\n            _canUseLocalStorage = false;\r\n            logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.BrowserFailedRemovalFromLocalStorage, \"Browser failed removal of local storage item. \" + getExceptionName(e), { exception: dumpObj(e) });\r\n        }\r\n    }\r\n    return false;\r\n}\r\nexport function utlCanUseSessionStorage() {\r\n    if (_canUseSessionStorage === undefined) {\r\n        _canUseSessionStorage = !!_getVerifiedStorageObject(StorageType.SessionStorage);\r\n    }\r\n    return _canUseSessionStorage;\r\n}\r\nexport function utlGetSessionStorageKeys() {\r\n    var keys = [];\r\n    if (utlCanUseSessionStorage()) {\r\n        objForEachKey(getGlobalInst(\"sessionStorage\"), function (key) {\r\n            keys.push(key);\r\n        });\r\n    }\r\n    return keys;\r\n}\r\nexport function utlGetSessionStorage(logger, name) {\r\n    var storage = _getSessionStorageObject();\r\n    if (storage !== null) {\r\n        try {\r\n            return storage.getItem(name);\r\n        }\r\n        catch (e) {\r\n            _canUseSessionStorage = false;\r\n            logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.BrowserCannotReadSessionStorage, \"Browser failed read of session storage. \" + getExceptionName(e), { exception: dumpObj(e) });\r\n        }\r\n    }\r\n    return null;\r\n}\r\nexport function utlSetSessionStorage(logger, name, data) {\r\n    var storage = _getSessionStorageObject();\r\n    if (storage !== null) {\r\n        try {\r\n            storage.setItem(name, data);\r\n            return true;\r\n        }\r\n        catch (e) {\r\n            _canUseSessionStorage = false;\r\n            logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.BrowserCannotWriteSessionStorage, \"Browser failed write to session storage. \" + getExceptionName(e), { exception: dumpObj(e) });\r\n        }\r\n    }\r\n    return false;\r\n}\r\nexport function utlRemoveSessionStorage(logger, name) {\r\n    var storage = _getSessionStorageObject();\r\n    if (storage !== null) {\r\n        try {\r\n            storage.removeItem(name);\r\n            return true;\r\n        }\r\n        catch (e) {\r\n            _canUseSessionStorage = false;\r\n            logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.BrowserFailedRemovalFromSessionStorage, \"Browser failed removal of session storage item. \" + getExceptionName(e), { exception: dumpObj(e) });\r\n        }\r\n    }\r\n    return false;\r\n}\r\n//# sourceMappingURL=StorageHelperFuncs.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { isFunction, getDocument } from \"@microsoft/applicationinsights-core-js\";\r\nexport function createDomEvent(eventName) {\r\n    var event = null;\r\n    if (isFunction(Event)) { // Use Event constructor when available\r\n        event = new Event(eventName);\r\n    }\r\n    else { // Event has no constructor in IE\r\n        var doc = getDocument();\r\n        if (doc && doc.createEvent) {\r\n            event = doc.createEvent(\"Event\");\r\n            event.initEvent(eventName, true, true);\r\n        }\r\n    }\r\n    return event;\r\n}\r\n//# sourceMappingURL=DomHelperFuncs.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nexport var RequestHeaders = {\r\n    requestContextHeader: \"Request-Context\",\r\n    requestContextTargetKey: \"appId\",\r\n    requestContextAppIdFormat: \"appId=cid-v1:\",\r\n    requestIdHeader: \"Request-Id\",\r\n    traceParentHeader: \"traceparent\",\r\n    traceStateHeader: \"tracestate\",\r\n    sdkContextHeader: \"Sdk-Context\",\r\n    sdkContextHeaderAppIdRequest: \"appId\",\r\n    requestContextHeaderLowerCase: \"request-context\"\r\n};\r\n//# sourceMappingURL=RequestResponseHeaders.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { getDocument, isString } from \"@microsoft/applicationinsights-core-js\";\r\nvar _document = getDocument() || {};\r\nvar _htmlAnchorIdx = 0;\r\n// Use an array of temporary values as it's possible for multiple calls to parseUrl() will be called with different URLs\r\n// Using a cache size of 5 for now as it current depth usage is at least 2, so adding a minor buffer to handle future updates\r\nvar _htmlAnchorElement = [null, null, null, null, null];\r\nexport function urlParseUrl(url) {\r\n    var anchorIdx = _htmlAnchorIdx;\r\n    var anchorCache = _htmlAnchorElement;\r\n    var tempAnchor = anchorCache[anchorIdx];\r\n    if (!_document.createElement) {\r\n        // Always create the temp instance if createElement is not available\r\n        tempAnchor = { host: urlParseHost(url, true) };\r\n    }\r\n    else if (!anchorCache[anchorIdx]) {\r\n        // Create and cache the unattached anchor instance\r\n        tempAnchor = anchorCache[anchorIdx] = _document.createElement(\"a\");\r\n    }\r\n    tempAnchor.href = url;\r\n    // Move the cache index forward\r\n    anchorIdx++;\r\n    if (anchorIdx >= anchorCache.length) {\r\n        anchorIdx = 0;\r\n    }\r\n    _htmlAnchorIdx = anchorIdx;\r\n    return tempAnchor;\r\n}\r\nexport function urlGetAbsoluteUrl(url) {\r\n    var result;\r\n    var a = urlParseUrl(url);\r\n    if (a) {\r\n        result = a.href;\r\n    }\r\n    return result;\r\n}\r\nexport function urlGetPathName(url) {\r\n    var result;\r\n    var a = urlParseUrl(url);\r\n    if (a) {\r\n        result = a.pathname;\r\n    }\r\n    return result;\r\n}\r\nexport function urlGetCompleteUrl(method, absoluteUrl) {\r\n    if (method) {\r\n        return method.toUpperCase() + \" \" + absoluteUrl;\r\n    }\r\n    return absoluteUrl;\r\n}\r\n// Fallback method to grab host from url if document.createElement method is not available\r\nexport function urlParseHost(url, inclPort) {\r\n    var fullHost = urlParseFullHost(url, inclPort) || \"\";\r\n    if (fullHost) {\r\n        var match = fullHost.match(/(www[0-9]?\\.)?(.[^/:]+)(\\:[\\d]+)?/i);\r\n        if (match != null && match.length > 3 && isString(match[2]) && match[2].length > 0) {\r\n            return match[2] + (match[3] || \"\");\r\n        }\r\n    }\r\n    return fullHost;\r\n}\r\nexport function urlParseFullHost(url, inclPort) {\r\n    var result = null;\r\n    if (url) {\r\n        var match = url.match(/(\\w*):\\/\\/(.[^/:]+)(\\:[\\d]+)?/i);\r\n        if (match != null && match.length > 2 && isString(match[2]) && match[2].length > 0) {\r\n            result = match[2] || \"\";\r\n            if (inclPort && match.length > 2) {\r\n                var protocol = (match[1] || \"\").toLowerCase();\r\n                var port = match[3] || \"\";\r\n                // IE includes the standard port so pass it off if it's the same as the protocol\r\n                if (protocol === \"http\" && port === \":80\") {\r\n                    port = \"\";\r\n                }\r\n                else if (protocol === \"https\" && port === \":443\") {\r\n                    port = \"\";\r\n                }\r\n                result += port;\r\n            }\r\n        }\r\n    }\r\n    return result;\r\n}\r\n//# sourceMappingURL=UrlHelperFuncs.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { getPerformance, getExceptionName as coreGetExceptionName, dumpObj, isNullOrUndefined, strTrim, random32, isArray, isError, isDate, newId, generateW3CId, toISOString, arrForEach, getIEVersion, attachEvent, dateNow, uaDisallowsSameSiteNone, disableCookies as coreDisableCookies, canUseCookies as coreCanUseCookies, getCookie as coreGetCookie, setCookie as coreSetCookie, deleteCookie as coreDeleteCookie, isBeaconsSupported } from \"@microsoft/applicationinsights-core-js\";\r\nimport { RequestHeaders } from \"./RequestResponseHeaders\";\r\nimport { dataSanitizeString } from \"./Telemetry/Common/DataSanitizer\";\r\nimport { createDomEvent } from \"./DomHelperFuncs\";\r\nimport { stringToBoolOrDefault, msToTimeSpan, isCrossOriginError, getExtensionByName } from \"./HelperFuncs\";\r\nimport { strNotSpecified } from \"./Constants\";\r\nimport { utlCanUseLocalStorage, utlCanUseSessionStorage, utlDisableStorage, utlGetSessionStorage, utlGetSessionStorageKeys, utlGetLocalStorage, utlRemoveSessionStorage, utlRemoveStorage, utlSetSessionStorage, utlSetLocalStorage } from \"./StorageHelperFuncs\";\r\nimport { urlGetAbsoluteUrl, urlGetCompleteUrl, urlGetPathName, urlParseFullHost, urlParseHost, urlParseUrl } from \"./UrlHelperFuncs\";\r\n// listing only non-geo specific locations\r\nvar _internalEndpoints = [\r\n    \"https://dc.services.visualstudio.com/v2/track\",\r\n    \"https://breeze.aimon.applicationinsights.io/v2/track\",\r\n    \"https://dc-int.services.visualstudio.com/v2/track\"\r\n];\r\nexport function isInternalApplicationInsightsEndpoint(endpointUrl) {\r\n    return _internalEndpoints.indexOf(endpointUrl.toLowerCase()) !== -1;\r\n}\r\nexport var Util = {\r\n    NotSpecified: strNotSpecified,\r\n    createDomEvent: createDomEvent,\r\n    disableStorage: utlDisableStorage,\r\n    isInternalApplicationInsightsEndpoint: isInternalApplicationInsightsEndpoint,\r\n    canUseLocalStorage: utlCanUseLocalStorage,\r\n    getStorage: utlGetLocalStorage,\r\n    setStorage: utlSetLocalStorage,\r\n    removeStorage: utlRemoveStorage,\r\n    canUseSessionStorage: utlCanUseSessionStorage,\r\n    getSessionStorageKeys: utlGetSessionStorageKeys,\r\n    getSessionStorage: utlGetSessionStorage,\r\n    setSessionStorage: utlSetSessionStorage,\r\n    removeSessionStorage: utlRemoveSessionStorage,\r\n    disableCookies: coreDisableCookies,\r\n    canUseCookies: coreCanUseCookies,\r\n    disallowsSameSiteNone: uaDisallowsSameSiteNone,\r\n    setCookie: coreSetCookie,\r\n    stringToBoolOrDefault: stringToBoolOrDefault,\r\n    getCookie: coreGetCookie,\r\n    deleteCookie: coreDeleteCookie,\r\n    trim: strTrim,\r\n    newId: newId,\r\n    random32: function () {\r\n        return random32(true);\r\n    },\r\n    generateW3CId: generateW3CId,\r\n    isArray: isArray,\r\n    isError: isError,\r\n    isDate: isDate,\r\n    toISOStringForIE8: toISOString,\r\n    getIEVersion: getIEVersion,\r\n    msToTimeSpan: msToTimeSpan,\r\n    isCrossOriginError: isCrossOriginError,\r\n    dump: dumpObj,\r\n    getExceptionName: coreGetExceptionName,\r\n    addEventHandler: attachEvent,\r\n    IsBeaconApiSupported: isBeaconsSupported,\r\n    getExtension: getExtensionByName\r\n};\r\nexport var UrlHelper = {\r\n    parseUrl: urlParseUrl,\r\n    getAbsoluteUrl: urlGetAbsoluteUrl,\r\n    getPathName: urlGetPathName,\r\n    getCompleteUrl: urlGetCompleteUrl,\r\n    parseHost: urlParseHost,\r\n    parseFullHost: urlParseFullHost\r\n};\r\nexport var CorrelationIdHelper = {\r\n    correlationIdPrefix: \"cid-v1:\",\r\n    /**\r\n     * Checks if a request url is not on a excluded domain list and if it is safe to add correlation headers.\r\n     * Headers are always included if the current domain matches the request domain. If they do not match (CORS),\r\n     * they are regex-ed across correlationHeaderDomains and correlationHeaderExcludedDomains to determine if headers are included.\r\n     * Some environments don't give information on currentHost via window.location.host (e.g. Cordova). In these cases, the user must\r\n     * manually supply domains to include correlation headers on. Else, no headers will be included at all.\r\n     */\r\n    canIncludeCorrelationHeader: function (config, requestUrl, currentHost) {\r\n        if (!requestUrl || (config && config.disableCorrelationHeaders)) {\r\n            return false;\r\n        }\r\n        if (config && config.correlationHeaderExcludePatterns) {\r\n            for (var i = 0; i < config.correlationHeaderExcludePatterns.length; i++) {\r\n                if (config.correlationHeaderExcludePatterns[i].test(requestUrl)) {\r\n                    return false;\r\n                }\r\n            }\r\n        }\r\n        var requestHost = urlParseUrl(requestUrl).host.toLowerCase();\r\n        if (requestHost && (requestHost.indexOf(\":443\") !== -1 || requestHost.indexOf(\":80\") !== -1)) {\r\n            // [Bug #1260] IE can include the port even for http and https URLs so if present\r\n            // try and parse it to remove if it matches the default protocol port\r\n            requestHost = (urlParseFullHost(requestUrl, true) || \"\").toLowerCase();\r\n        }\r\n        if ((!config || !config.enableCorsCorrelation) && (requestHost && requestHost !== currentHost)) {\r\n            return false;\r\n        }\r\n        var includedDomains = config && config.correlationHeaderDomains;\r\n        if (includedDomains) {\r\n            var matchExists_1;\r\n            arrForEach(includedDomains, function (domain) {\r\n                var regex = new RegExp(domain.toLowerCase().replace(/\\\\/g, \"\\\\\\\\\").replace(/\\./g, \"\\\\.\").replace(/\\*/g, \".*\"));\r\n                matchExists_1 = matchExists_1 || regex.test(requestHost);\r\n            });\r\n            if (!matchExists_1) {\r\n                return false;\r\n            }\r\n        }\r\n        var excludedDomains = config && config.correlationHeaderExcludedDomains;\r\n        if (!excludedDomains || excludedDomains.length === 0) {\r\n            return true;\r\n        }\r\n        for (var i = 0; i < excludedDomains.length; i++) {\r\n            var regex = new RegExp(excludedDomains[i].toLowerCase().replace(/\\\\/g, \"\\\\\\\\\").replace(/\\./g, \"\\\\.\").replace(/\\*/g, \".*\"));\r\n            if (regex.test(requestHost)) {\r\n                return false;\r\n            }\r\n        }\r\n        // if we don't know anything about the requestHost, require the user to use included/excludedDomains.\r\n        // Previously we always returned false for a falsy requestHost\r\n        return requestHost && requestHost.length > 0;\r\n    },\r\n    /**\r\n     * Combines target appId and target role name from response header.\r\n     */\r\n    getCorrelationContext: function (responseHeader) {\r\n        if (responseHeader) {\r\n            var correlationId = CorrelationIdHelper.getCorrelationContextValue(responseHeader, RequestHeaders.requestContextTargetKey);\r\n            if (correlationId && correlationId !== CorrelationIdHelper.correlationIdPrefix) {\r\n                return correlationId;\r\n            }\r\n        }\r\n    },\r\n    /**\r\n     * Gets key from correlation response header\r\n     */\r\n    getCorrelationContextValue: function (responseHeader, key) {\r\n        if (responseHeader) {\r\n            var keyValues = responseHeader.split(\",\");\r\n            for (var i = 0; i < keyValues.length; ++i) {\r\n                var keyValue = keyValues[i].split(\"=\");\r\n                if (keyValue.length === 2 && keyValue[0] === key) {\r\n                    return keyValue[1];\r\n                }\r\n            }\r\n        }\r\n    }\r\n};\r\nexport function AjaxHelperParseDependencyPath(logger, absoluteUrl, method, commandName) {\r\n    var target, name = commandName, data = commandName;\r\n    if (absoluteUrl && absoluteUrl.length > 0) {\r\n        var parsedUrl = urlParseUrl(absoluteUrl);\r\n        target = parsedUrl.host;\r\n        if (!name) {\r\n            if (parsedUrl.pathname != null) {\r\n                var pathName = (parsedUrl.pathname.length === 0) ? \"/\" : parsedUrl.pathname;\r\n                if (pathName.charAt(0) !== \"/\") {\r\n                    pathName = \"/\" + pathName;\r\n                }\r\n                data = parsedUrl.pathname;\r\n                name = dataSanitizeString(logger, method ? method + \" \" + pathName : pathName);\r\n            }\r\n            else {\r\n                name = dataSanitizeString(logger, absoluteUrl);\r\n            }\r\n        }\r\n    }\r\n    else {\r\n        target = commandName;\r\n        name = commandName;\r\n    }\r\n    return {\r\n        target: target,\r\n        name: name,\r\n        data: data\r\n    };\r\n}\r\nexport function dateTimeUtilsNow() {\r\n    // returns the window or webworker performance object\r\n    var perf = getPerformance();\r\n    if (perf && perf.now && perf.timing) {\r\n        var now = perf.now() + perf.timing.navigationStart;\r\n        // Known issue with IE where this calculation can be negative, so if it is then ignore and fallback\r\n        if (now > 0) {\r\n            return now;\r\n        }\r\n    }\r\n    return dateNow();\r\n}\r\nexport function dateTimeUtilsDuration(start, end) {\r\n    var result = null;\r\n    if (start !== 0 && end !== 0 && !isNullOrUndefined(start) && !isNullOrUndefined(end)) {\r\n        result = end - start;\r\n    }\r\n    return result;\r\n}\r\n/**\r\n * A utility class that helps getting time related parameters\r\n */\r\nexport var DateTimeUtils = {\r\n    Now: dateTimeUtilsNow,\r\n    GetDuration: dateTimeUtilsDuration\r\n};\r\n//# sourceMappingURL=Util.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { __extends } from \"tslib\";\r\nimport { dataSanitizeMeasurements, dataSanitizeProperties, dataSanitizeString, dataSanitizeUrl } from \"./Common/DataSanitizer\";\r\nimport { AjaxHelperParseDependencyPath } from \"../Util\";\r\nimport { RemoteDependencyData as GeneratedRemoteDependencyData } from \"../Interfaces/Contracts/Generated/RemoteDependencyData\";\r\nimport { msToTimeSpan } from \"../HelperFuncs\";\r\nvar RemoteDependencyData = /** @class */ (function (_super) {\r\n    __extends(RemoteDependencyData, _super);\r\n    /**\r\n     * Constructs a new instance of the RemoteDependencyData object\r\n     */\r\n    function RemoteDependencyData(logger, id, absoluteUrl, commandName, value, success, resultCode, method, requestAPI, correlationContext, properties, measurements) {\r\n        if (requestAPI === void 0) { requestAPI = \"Ajax\"; }\r\n        var _this = _super.call(this) || this;\r\n        _this.aiDataContract = {\r\n            id: 1 /* Required */,\r\n            ver: 1 /* Required */,\r\n            name: 0 /* Default */,\r\n            resultCode: 0 /* Default */,\r\n            duration: 0 /* Default */,\r\n            success: 0 /* Default */,\r\n            data: 0 /* Default */,\r\n            target: 0 /* Default */,\r\n            type: 0 /* Default */,\r\n            properties: 0 /* Default */,\r\n            measurements: 0 /* Default */,\r\n            kind: 0 /* Default */,\r\n            value: 0 /* Default */,\r\n            count: 0 /* Default */,\r\n            min: 0 /* Default */,\r\n            max: 0 /* Default */,\r\n            stdDev: 0 /* Default */,\r\n            dependencyKind: 0 /* Default */,\r\n            dependencySource: 0 /* Default */,\r\n            commandName: 0 /* Default */,\r\n            dependencyTypeName: 0 /* Default */\r\n        };\r\n        _this.id = id;\r\n        _this.duration = msToTimeSpan(value);\r\n        _this.success = success;\r\n        _this.resultCode = resultCode + \"\";\r\n        _this.type = dataSanitizeString(logger, requestAPI);\r\n        var dependencyFields = AjaxHelperParseDependencyPath(logger, absoluteUrl, method, commandName);\r\n        _this.data = dataSanitizeUrl(logger, commandName) || dependencyFields.data; // get a value from hosturl if commandName not available\r\n        _this.target = dataSanitizeString(logger, dependencyFields.target);\r\n        if (correlationContext) {\r\n            _this.target = _this.target + \" | \" + correlationContext;\r\n        }\r\n        _this.name = dataSanitizeString(logger, dependencyFields.name);\r\n        _this.properties = dataSanitizeProperties(logger, properties);\r\n        _this.measurements = dataSanitizeMeasurements(logger, measurements);\r\n        return _this;\r\n    }\r\n    RemoteDependencyData.envelopeType = \"Microsoft.ApplicationInsights.{0}.RemoteDependency\";\r\n    RemoteDependencyData.dataType = \"RemoteDependencyData\";\r\n    return RemoteDependencyData;\r\n}(GeneratedRemoteDependencyData));\r\nexport { RemoteDependencyData };\r\n//# sourceMappingURL=RemoteDependencyData.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { dateTimeUtilsDuration } from \"@microsoft/applicationinsights-common\";\r\nimport { LoggingSeverity, _InternalMessageId, getDocument, getLocation, arrForEach, isNullOrUndefined, getExceptionName, dumpObj } from \"@microsoft/applicationinsights-core-js\";\r\nimport dynamicProto from \"@microsoft/dynamicproto-js\";\r\n/**\r\n * Class encapsulates sending page views and page view performance telemetry.\r\n */\r\nvar PageViewManager = /** @class */ (function () {\r\n    function PageViewManager(appInsights, overridePageViewDuration, core, pageViewPerformanceManager) {\r\n        dynamicProto(PageViewManager, this, function (_self) {\r\n            var intervalHandle = null;\r\n            var itemQueue = [];\r\n            var pageViewPerformanceSent = false;\r\n            var _logger;\r\n            if (core) {\r\n                _logger = core.logger;\r\n            }\r\n            function _flushChannels() {\r\n                if (core) {\r\n                    arrForEach(core.getTransmissionControls(), function (queues) {\r\n                        arrForEach(queues, function (q) { return q.flush(true); });\r\n                    });\r\n                }\r\n            }\r\n            function _addQueue(cb) {\r\n                itemQueue.push(cb);\r\n                if (!intervalHandle) {\r\n                    intervalHandle = setInterval((function () {\r\n                        var allItems = itemQueue.slice(0);\r\n                        var doFlush = false;\r\n                        itemQueue = [];\r\n                        arrForEach(allItems, function (item) {\r\n                            if (!item()) {\r\n                                // Not processed so rescheduled\r\n                                itemQueue.push(item);\r\n                            }\r\n                            else {\r\n                                doFlush = true;\r\n                            }\r\n                        });\r\n                        if (itemQueue.length === 0) {\r\n                            clearInterval(intervalHandle);\r\n                            intervalHandle = null;\r\n                        }\r\n                        if (doFlush) {\r\n                            // We process at least one item so flush the queue\r\n                            _flushChannels();\r\n                        }\r\n                    }), 100);\r\n                }\r\n            }\r\n            _self.trackPageView = function (pageView, customProperties) {\r\n                var name = pageView.name;\r\n                if (isNullOrUndefined(name) || typeof name !== \"string\") {\r\n                    var doc = getDocument();\r\n                    name = pageView.name = doc && doc.title || \"\";\r\n                }\r\n                var uri = pageView.uri;\r\n                if (isNullOrUndefined(uri) || typeof uri !== \"string\") {\r\n                    var location_1 = getLocation();\r\n                    uri = pageView.uri = location_1 && location_1.href || \"\";\r\n                }\r\n                // case 1a. if performance timing is not supported by the browser, send the page view telemetry with the duration provided by the user. If the user\r\n                // do not provide the duration, set duration to undefined\r\n                // Also this is case 4\r\n                if (!pageViewPerformanceManager.isPerformanceTimingSupported()) {\r\n                    appInsights.sendPageViewInternal(pageView, customProperties);\r\n                    _flushChannels();\r\n                    // no navigation timing (IE 8, iOS Safari 8.4, Opera Mini 8 - see http://caniuse.com/#feat=nav-timing)\r\n                    _logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.NavigationTimingNotSupported, \"trackPageView: navigation timing API used for calculation of page duration is not supported in this browser. This page view will be collected without duration and timing info.\");\r\n                    return;\r\n                }\r\n                var pageViewSent = false;\r\n                var customDuration;\r\n                // if the performance timing is supported by the browser, calculate the custom duration\r\n                var start = pageViewPerformanceManager.getPerformanceTiming().navigationStart;\r\n                if (start > 0) {\r\n                    customDuration = dateTimeUtilsDuration(start, +new Date);\r\n                    if (!pageViewPerformanceManager.shouldCollectDuration(customDuration)) {\r\n                        customDuration = undefined;\r\n                    }\r\n                }\r\n                // if the user has provided duration, send a page view telemetry with the provided duration. Otherwise, if\r\n                // overridePageViewDuration is set to true, send a page view telemetry with the custom duration calculated earlier\r\n                var duration;\r\n                if (!isNullOrUndefined(customProperties) &&\r\n                    !isNullOrUndefined(customProperties.duration)) {\r\n                    duration = customProperties.duration;\r\n                }\r\n                if (overridePageViewDuration || !isNaN(duration)) {\r\n                    if (isNaN(duration)) {\r\n                        // case 3\r\n                        if (!customProperties) {\r\n                            customProperties = {};\r\n                        }\r\n                        customProperties[\"duration\"] = customDuration;\r\n                    }\r\n                    // case 2\r\n                    appInsights.sendPageViewInternal(pageView, customProperties);\r\n                    _flushChannels();\r\n                    pageViewSent = true;\r\n                }\r\n                // now try to send the page view performance telemetry\r\n                var maxDurationLimit = 60000;\r\n                if (!customProperties) {\r\n                    customProperties = {};\r\n                }\r\n                // Queue the event for processing\r\n                _addQueue(function () {\r\n                    var processed = false;\r\n                    try {\r\n                        if (pageViewPerformanceManager.isPerformanceTimingDataReady()) {\r\n                            processed = true;\r\n                            var pageViewPerformance = {\r\n                                name: name,\r\n                                uri: uri\r\n                            };\r\n                            pageViewPerformanceManager.populatePageViewPerformanceEvent(pageViewPerformance);\r\n                            if (!pageViewPerformance.isValid && !pageViewSent) {\r\n                                // If navigation timing gives invalid numbers, then go back to \"override page view duration\" mode.\r\n                                // That's the best value we can get that makes sense.\r\n                                customProperties[\"duration\"] = customDuration;\r\n                                appInsights.sendPageViewInternal(pageView, customProperties);\r\n                            }\r\n                            else {\r\n                                if (!pageViewSent) {\r\n                                    customProperties[\"duration\"] = pageViewPerformance.durationMs;\r\n                                    appInsights.sendPageViewInternal(pageView, customProperties);\r\n                                }\r\n                                if (!pageViewPerformanceSent) {\r\n                                    appInsights.sendPageViewPerformanceInternal(pageViewPerformance, customProperties);\r\n                                    pageViewPerformanceSent = true;\r\n                                }\r\n                            }\r\n                        }\r\n                        else if (start > 0 && dateTimeUtilsDuration(start, +new Date) > maxDurationLimit) {\r\n                            // if performance timings are not ready but we exceeded the maximum duration limit, just log a page view telemetry\r\n                            // with the maximum duration limit. Otherwise, keep waiting until performance timings are ready\r\n                            processed = true;\r\n                            if (!pageViewSent) {\r\n                                customProperties[\"duration\"] = maxDurationLimit;\r\n                                appInsights.sendPageViewInternal(pageView, customProperties);\r\n                            }\r\n                        }\r\n                    }\r\n                    catch (e) {\r\n                        _logger.throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.TrackPVFailedCalc, \"trackPageView failed on page load calculation: \" + getExceptionName(e), { exception: dumpObj(e) });\r\n                    }\r\n                    return processed;\r\n                });\r\n            };\r\n        });\r\n    }\r\n    /**\r\n     * Currently supported cases:\r\n     * 1) (default case) track page view called with default parameters, overridePageViewDuration = false. Page view is sent with page view performance when navigation timing data is available.\r\n     *    a. If navigation timing is not supported then page view is sent right away with undefined duration. Page view performance is not sent.\r\n     * 2) overridePageViewDuration = true, custom duration provided. Custom duration is used, page view sends right away.\r\n     * 3) overridePageViewDuration = true, custom duration NOT provided. Page view is sent right away, duration is time spent from page load till now (or undefined if navigation timing is not supported).\r\n     * 4) overridePageViewDuration = false, custom duration is provided. Page view is sent right away with custom duration.\r\n     *\r\n     * In all cases page view performance is sent once (only for the 1st call of trackPageView), or not sent if navigation timing is not supported.\r\n     */\r\n    PageViewManager.prototype.trackPageView = function (pageView, customProperties) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    return PageViewManager;\r\n}());\r\nexport { PageViewManager };\r\n//# sourceMappingURL=PageViewManager.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { utlCanUseSessionStorage, utlGetSessionStorage, utlRemoveSessionStorage, utlSetSessionStorage } from \"@microsoft/applicationinsights-common\";\r\nimport { hasJSON, getJSON, dateNow, dumpObj, throwError } from \"@microsoft/applicationinsights-core-js\";\r\n/**\r\n * Used to track page visit durations\r\n */\r\nvar PageVisitTimeManager = /** @class */ (function () {\r\n    /**\r\n     * Creates a new instance of PageVisitTimeManager\r\n     * @param pageVisitTimeTrackingHandler Delegate that will be called to send telemetry data to AI (when trackPreviousPageVisit is called)\r\n     * @returns {}\r\n     */\r\n    function PageVisitTimeManager(logger, pageVisitTimeTrackingHandler) {\r\n        this.prevPageVisitDataKeyName = \"prevPageVisitData\";\r\n        this.pageVisitTimeTrackingHandler = pageVisitTimeTrackingHandler;\r\n        this._logger = logger;\r\n    }\r\n    /**\r\n     * Tracks the previous page visit time telemetry (if exists) and starts timing of new page visit time\r\n     * @param currentPageName Name of page to begin timing for visit duration\r\n     * @param currentPageUrl Url of page to begin timing for visit duration\r\n     */\r\n    PageVisitTimeManager.prototype.trackPreviousPageVisit = function (currentPageName, currentPageUrl) {\r\n        try {\r\n            // Restart timer for new page view\r\n            var prevPageVisitTimeData = this.restartPageVisitTimer(currentPageName, currentPageUrl);\r\n            // If there was a page already being timed, track the visit time for it now.\r\n            if (prevPageVisitTimeData) {\r\n                this.pageVisitTimeTrackingHandler(prevPageVisitTimeData.pageName, prevPageVisitTimeData.pageUrl, prevPageVisitTimeData.pageVisitTime);\r\n            }\r\n        }\r\n        catch (e) {\r\n            this._logger.warnToConsole(\"Auto track page visit time failed, metric will not be collected: \" + dumpObj(e));\r\n        }\r\n    };\r\n    /**\r\n     * Stops timing of current page (if exists) and starts timing for duration of visit to pageName\r\n     * @param pageName Name of page to begin timing visit duration\r\n     * @returns {PageVisitData} Page visit data (including duration) of pageName from last call to start or restart, if exists. Null if not.\r\n     */\r\n    PageVisitTimeManager.prototype.restartPageVisitTimer = function (pageName, pageUrl) {\r\n        try {\r\n            var prevPageVisitData = this.stopPageVisitTimer();\r\n            this.startPageVisitTimer(pageName, pageUrl);\r\n            return prevPageVisitData;\r\n        }\r\n        catch (e) {\r\n            this._logger.warnToConsole(\"Call to restart failed: \" + dumpObj(e));\r\n            return null;\r\n        }\r\n    };\r\n    /**\r\n     * Starts timing visit duration of pageName\r\n     * @param pageName\r\n     * @returns {}\r\n     */\r\n    PageVisitTimeManager.prototype.startPageVisitTimer = function (pageName, pageUrl) {\r\n        try {\r\n            if (utlCanUseSessionStorage()) {\r\n                if (utlGetSessionStorage(this._logger, this.prevPageVisitDataKeyName) != null) {\r\n                    throwError(\"Cannot call startPageVisit consecutively without first calling stopPageVisit\");\r\n                }\r\n                var currPageVisitData = new PageVisitData(pageName, pageUrl);\r\n                var currPageVisitDataStr = getJSON().stringify(currPageVisitData);\r\n                utlSetSessionStorage(this._logger, this.prevPageVisitDataKeyName, currPageVisitDataStr);\r\n            }\r\n        }\r\n        catch (e) {\r\n            // TODO: Remove this catch in next phase, since if start is called twice in a row the exception needs to be propagated out\r\n            this._logger.warnToConsole(\"Call to start failed: \" + dumpObj(e));\r\n        }\r\n    };\r\n    /**\r\n     * Stops timing of current page, if exists.\r\n     * @returns {PageVisitData} Page visit data (including duration) of pageName from call to start, if exists. Null if not.\r\n     */\r\n    PageVisitTimeManager.prototype.stopPageVisitTimer = function () {\r\n        try {\r\n            if (utlCanUseSessionStorage()) {\r\n                // Define end time of page's visit\r\n                var pageVisitEndTime = dateNow();\r\n                // Try to retrieve  page name and start time from session storage\r\n                var pageVisitDataJsonStr = utlGetSessionStorage(this._logger, this.prevPageVisitDataKeyName);\r\n                if (pageVisitDataJsonStr && hasJSON()) {\r\n                    // if previous page data exists, set end time of visit\r\n                    var prevPageVisitData = getJSON().parse(pageVisitDataJsonStr);\r\n                    prevPageVisitData.pageVisitTime = pageVisitEndTime - prevPageVisitData.pageVisitStartTime;\r\n                    // Remove data from storage since we already used it\r\n                    utlRemoveSessionStorage(this._logger, this.prevPageVisitDataKeyName);\r\n                    // Return page visit data\r\n                    return prevPageVisitData;\r\n                }\r\n                else {\r\n                    return null;\r\n                }\r\n            }\r\n            return null;\r\n        }\r\n        catch (e) {\r\n            this._logger.warnToConsole(\"Stop page visit timer failed: \" + dumpObj(e));\r\n            return null;\r\n        }\r\n    };\r\n    return PageVisitTimeManager;\r\n}());\r\nexport { PageVisitTimeManager };\r\nvar PageVisitData = /** @class */ (function () {\r\n    function PageVisitData(pageName, pageUrl) {\r\n        this.pageVisitStartTime = dateNow();\r\n        this.pageName = pageName;\r\n        this.pageUrl = pageUrl;\r\n    }\r\n    return PageVisitData;\r\n}());\r\nexport { PageVisitData };\r\n//# sourceMappingURL=PageVisitTimeManager.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { dateTimeUtilsDuration, msToTimeSpan } from \"@microsoft/applicationinsights-common\";\r\nimport { LoggingSeverity, _InternalMessageId, getNavigator, getPerformance } from \"@microsoft/applicationinsights-core-js\";\r\n/**\r\n * Class encapsulates sending page view performance telemetry.\r\n */\r\nvar PageViewPerformanceManager = /** @class */ (function () {\r\n    function PageViewPerformanceManager(core) {\r\n        this.MAX_DURATION_ALLOWED = 3600000; // 1h\r\n        if (core) {\r\n            this._logger = core.logger;\r\n        }\r\n    }\r\n    PageViewPerformanceManager.prototype.populatePageViewPerformanceEvent = function (pageViewPerformance) {\r\n        pageViewPerformance.isValid = false;\r\n        /*\r\n         * http://www.w3.org/TR/navigation-timing/#processing-model\r\n         *  |-navigationStart\r\n         *  |             |-connectEnd\r\n         *  |             ||-requestStart\r\n         *  |             ||             |-responseStart\r\n         *  |             ||             |              |-responseEnd\r\n         *  |             ||             |              |\r\n         *  |             ||             |              |         |-loadEventEnd\r\n         *  |---network---||---request---|---response---|---dom---|\r\n         *  |--------------------------total----------------------|\r\n         *\r\n         *  total = The difference between the load event of the current document is completed and the first recorded timestamp of the performance entry : https://developer.mozilla.org/en-US/docs/Web/Performance/Navigation_and_resource_timings#duration\r\n         *  network = Redirect time + App Cache + DNS lookup time + TCP connection time\r\n         *  request = Request time : https://developer.mozilla.org/en-US/docs/Web/Performance/Navigation_and_resource_timings#request_time\r\n         *  response = Response time\r\n         *  dom = Document load time : https://html.spec.whatwg.org/multipage/dom.html#document-load-timing-info\r\n         *      = Document processing time : https://developers.google.com/web/fundamentals/performance/navigation-and-resource-timing/#document_processing\r\n         *      + Loading time : https://developers.google.com/web/fundamentals/performance/navigation-and-resource-timing/#loading\r\n         */\r\n        var navigationTiming = this.getPerformanceNavigationTiming();\r\n        var timing = this.getPerformanceTiming();\r\n        var total = 0;\r\n        var network = 0;\r\n        var request = 0;\r\n        var response = 0;\r\n        var dom = 0;\r\n        if (navigationTiming || timing) {\r\n            if (navigationTiming) {\r\n                total = navigationTiming.duration;\r\n                /**\r\n                 * support both cases:\r\n                 * - startTime is always zero: https://developer.mozilla.org/en-US/docs/Web/API/PerformanceNavigationTiming\r\n                 * - for older browsers where the startTime is not zero\r\n                 */\r\n                network = navigationTiming.startTime === 0 ? navigationTiming.connectEnd : dateTimeUtilsDuration(navigationTiming.startTime, navigationTiming.connectEnd);\r\n                request = dateTimeUtilsDuration(navigationTiming.requestStart, navigationTiming.responseStart);\r\n                response = dateTimeUtilsDuration(navigationTiming.responseStart, navigationTiming.responseEnd);\r\n                dom = dateTimeUtilsDuration(navigationTiming.responseEnd, navigationTiming.loadEventEnd);\r\n            }\r\n            else {\r\n                total = dateTimeUtilsDuration(timing.navigationStart, timing.loadEventEnd);\r\n                network = dateTimeUtilsDuration(timing.navigationStart, timing.connectEnd);\r\n                request = dateTimeUtilsDuration(timing.requestStart, timing.responseStart);\r\n                response = dateTimeUtilsDuration(timing.responseStart, timing.responseEnd);\r\n                dom = dateTimeUtilsDuration(timing.responseEnd, timing.loadEventEnd);\r\n            }\r\n            if (total === 0) {\r\n                this._logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.ErrorPVCalc, \"error calculating page view performance.\", { total: total, network: network, request: request, response: response, dom: dom });\r\n            }\r\n            else if (!this.shouldCollectDuration(total, network, request, response, dom)) {\r\n                this._logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.InvalidDurationValue, \"Invalid page load duration value. Browser perf data won't be sent.\", { total: total, network: network, request: request, response: response, dom: dom });\r\n            }\r\n            else if (total < Math.floor(network) + Math.floor(request) + Math.floor(response) + Math.floor(dom)) {\r\n                // some browsers may report individual components incorrectly so that the sum of the parts will be bigger than total PLT\r\n                // in this case, don't report client performance from this page\r\n                this._logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.ClientPerformanceMathError, \"client performance math error.\", { total: total, network: network, request: request, response: response, dom: dom });\r\n            }\r\n            else {\r\n                pageViewPerformance.durationMs = total;\r\n                // // convert to timespans\r\n                pageViewPerformance.perfTotal = pageViewPerformance.duration = msToTimeSpan(total);\r\n                pageViewPerformance.networkConnect = msToTimeSpan(network);\r\n                pageViewPerformance.sentRequest = msToTimeSpan(request);\r\n                pageViewPerformance.receivedResponse = msToTimeSpan(response);\r\n                pageViewPerformance.domProcessing = msToTimeSpan(dom);\r\n                pageViewPerformance.isValid = true;\r\n            }\r\n        }\r\n    };\r\n    PageViewPerformanceManager.prototype.getPerformanceTiming = function () {\r\n        if (this.isPerformanceTimingSupported()) {\r\n            return getPerformance().timing;\r\n        }\r\n        return null;\r\n    };\r\n    PageViewPerformanceManager.prototype.getPerformanceNavigationTiming = function () {\r\n        if (this.isPerformanceNavigationTimingSupported()) {\r\n            return getPerformance().getEntriesByType(\"navigation\")[0];\r\n        }\r\n        return null;\r\n    };\r\n    /**\r\n     * Returns true is window PerformanceNavigationTiming API is supported, false otherwise.\r\n     */\r\n    PageViewPerformanceManager.prototype.isPerformanceNavigationTimingSupported = function () {\r\n        var perf = getPerformance();\r\n        return perf && perf.getEntriesByType && perf.getEntriesByType(\"navigation\").length > 0;\r\n    };\r\n    /**\r\n     * Returns true is window performance timing API is supported, false otherwise.\r\n     */\r\n    PageViewPerformanceManager.prototype.isPerformanceTimingSupported = function () {\r\n        var perf = getPerformance();\r\n        return perf && perf.timing;\r\n    };\r\n    /**\r\n     * As page loads different parts of performance timing numbers get set. When all of them are set we can report it.\r\n     * Returns true if ready, false otherwise.\r\n     */\r\n    PageViewPerformanceManager.prototype.isPerformanceTimingDataReady = function () {\r\n        var perf = getPerformance();\r\n        var timing = perf ? perf.timing : 0;\r\n        return timing\r\n            && timing.domainLookupStart > 0\r\n            && timing.navigationStart > 0\r\n            && timing.responseStart > 0\r\n            && timing.requestStart > 0\r\n            && timing.loadEventEnd > 0\r\n            && timing.responseEnd > 0\r\n            && timing.connectEnd > 0\r\n            && timing.domLoading > 0;\r\n    };\r\n    /**\r\n     * This method tells if given durations should be excluded from collection.\r\n     */\r\n    PageViewPerformanceManager.prototype.shouldCollectDuration = function () {\r\n        var durations = [];\r\n        for (var _i = 0; _i < arguments.length; _i++) {\r\n            durations[_i] = arguments[_i];\r\n        }\r\n        var _navigator = getNavigator() || {};\r\n        // a full list of Google crawlers user agent strings - https://support.google.com/webmasters/answer/1061943?hl=en\r\n        var botAgentNames = [\"googlebot\", \"adsbot-google\", \"apis-google\", \"mediapartners-google\"];\r\n        var userAgent = _navigator.userAgent;\r\n        var isGoogleBot = false;\r\n        if (userAgent) {\r\n            for (var i = 0; i < botAgentNames.length; i++) {\r\n                isGoogleBot = isGoogleBot || userAgent.toLowerCase().indexOf(botAgentNames[i]) !== -1;\r\n            }\r\n        }\r\n        if (isGoogleBot) {\r\n            // Don't report durations for GoogleBot, it is returning invalid values in performance.timing API.\r\n            return false;\r\n        }\r\n        else {\r\n            // for other page views, don't report if it's outside of a reasonable range\r\n            for (var i = 0; i < durations.length; i++) {\r\n                if (durations[i] < 0 || durations[i] >= this.MAX_DURATION_ALLOWED) {\r\n                    return false;\r\n                }\r\n            }\r\n        }\r\n        return true;\r\n    };\r\n    return PageViewPerformanceManager;\r\n}());\r\nexport { PageViewPerformanceManager };\r\n//# sourceMappingURL=PageViewPerformanceManager.js.map","/**\r\n * ApplicationInsights.ts\r\n * @copyright Microsoft 2018\r\n */\r\nimport { __assign, __extends } from \"tslib\";\r\nimport { PageViewPerformance, PageView, RemoteDependencyData, Event as EventTelemetry, TelemetryItemCreator, Metric, Exception, SeverityLevel, Trace, dateTimeUtilsDuration, PropertiesPluginIdentifier, AnalyticsPluginIdentifier, stringToBoolOrDefault, createDomEvent, strNotSpecified, isCrossOriginError, utlDisableStorage, dataSanitizeString } from \"@microsoft/applicationinsights-common\";\r\nimport { BaseTelemetryPlugin, LoggingSeverity, _InternalMessageId, getWindow, getDocument, getHistory, getLocation, doPerf, objForEachKey, isString, isFunction, isNullOrUndefined, arrForEach, generateW3CId, dumpObj, getExceptionName, safeGetCookieMgr } from \"@microsoft/applicationinsights-core-js\";\r\nimport { PageViewManager } from \"./Telemetry/PageViewManager\";\r\nimport { PageVisitTimeManager } from \"./Telemetry/PageVisitTimeManager\";\r\nimport { PageViewPerformanceManager } from \"./Telemetry/PageViewPerformanceManager\";\r\nimport dynamicProto from \"@microsoft/dynamicproto-js\";\r\n\"use strict\";\r\nvar durationProperty = \"duration\";\r\nvar strEvent = \"event\";\r\nfunction _dispatchEvent(target, evnt) {\r\n    if (target && target.dispatchEvent && evnt) {\r\n        target.dispatchEvent(evnt);\r\n    }\r\n}\r\nfunction _getReason(error) {\r\n    if (error && error.reason) {\r\n        var reason = error.reason;\r\n        if (!isString(reason) && isFunction(reason.toString)) {\r\n            return reason.toString();\r\n        }\r\n        return dumpObj(reason);\r\n    }\r\n    // Pass the original object down which will eventually get evaluated for any message or description\r\n    return error || \"\";\r\n}\r\nvar ApplicationInsights = /** @class */ (function (_super) {\r\n    __extends(ApplicationInsights, _super);\r\n    function ApplicationInsights() {\r\n        var _this = _super.call(this) || this;\r\n        _this.identifier = AnalyticsPluginIdentifier; // do not change name or priority\r\n        _this.priority = 180; // take from reserved priority range 100- 200\r\n        _this.autoRoutePVDelay = 500; // ms; Time to wait after a route change before triggering a pageview to allow DOM changes to take place\r\n        var _eventTracking;\r\n        var _pageTracking;\r\n        var _properties;\r\n        // Counts number of trackAjax invocations.\r\n        // By default we only monitor X ajax call per view to avoid too much load.\r\n        // Default value is set in config.\r\n        // This counter keeps increasing even after the limit is reached.\r\n        var _trackAjaxAttempts = 0;\r\n        // array with max length of 2 that store current url and previous url for SPA page route change trackPageview use.\r\n        var _prevUri; // Assigned in the constructor\r\n        var _currUri;\r\n        dynamicProto(ApplicationInsights, _this, function (_self, _base) {\r\n            var location = getLocation(true);\r\n            _prevUri = location && location.href || \"\";\r\n            _self.getCookieMgr = function () {\r\n                return safeGetCookieMgr(_self.core);\r\n            };\r\n            _self.processTelemetry = function (env, itemCtx) {\r\n                doPerf(_self.core, function () { return _self.identifier + \":processTelemetry\"; }, function () {\r\n                    var doNotSendItem = false;\r\n                    var telemetryInitializersCount = _self._telemetryInitializers.length;\r\n                    itemCtx = _self._getTelCtx(itemCtx);\r\n                    for (var i = 0; i < telemetryInitializersCount; ++i) {\r\n                        var telemetryInitializer = _self._telemetryInitializers[i];\r\n                        if (telemetryInitializer) {\r\n                            try {\r\n                                if (telemetryInitializer.apply(null, [env]) === false) {\r\n                                    doNotSendItem = true;\r\n                                    break;\r\n                                }\r\n                            }\r\n                            catch (e) {\r\n                                // log error but dont stop executing rest of the telemetry initializers\r\n                                // doNotSendItem = true;\r\n                                itemCtx.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.TelemetryInitializerFailed, \"One of telemetry initializers failed, telemetry item will not be sent: \" + getExceptionName(e), { exception: dumpObj(e) }, true);\r\n                            }\r\n                        }\r\n                    }\r\n                    if (!doNotSendItem) {\r\n                        _self.processNext(env, itemCtx);\r\n                    }\r\n                }, function () { return ({ item: env }); }, !(env.sync));\r\n            };\r\n            _self.trackEvent = function (event, customProperties) {\r\n                try {\r\n                    var telemetryItem = TelemetryItemCreator.create(event, EventTelemetry.dataType, EventTelemetry.envelopeType, _self.diagLog(), customProperties);\r\n                    _self.core.track(telemetryItem);\r\n                }\r\n                catch (e) {\r\n                    _self.diagLog().throwInternal(LoggingSeverity.WARNING, _InternalMessageId.TrackTraceFailed, \"trackTrace failed, trace will not be collected: \" + getExceptionName(e), { exception: dumpObj(e) });\r\n                }\r\n            };\r\n            /**\r\n             * Start timing an extended event. Call `stopTrackEvent` to log the event when it ends.\r\n             * @param   name    A string that identifies this event uniquely within the document.\r\n             */\r\n            _self.startTrackEvent = function (name) {\r\n                try {\r\n                    _eventTracking.start(name);\r\n                }\r\n                catch (e) {\r\n                    _self.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.StartTrackEventFailed, \"startTrackEvent failed, event will not be collected: \" + getExceptionName(e), { exception: dumpObj(e) });\r\n                }\r\n            };\r\n            /**\r\n             * Log an extended event that you started timing with `startTrackEvent`.\r\n             * @param   name    The string you used to identify this event in `startTrackEvent`.\r\n             * @param   properties  map[string, string] - additional data used to filter events and metrics in the portal. Defaults to empty.\r\n             * @param   measurements    map[string, number] - metrics associated with this event, displayed in Metrics Explorer on the portal. Defaults to empty.\r\n             */\r\n            _self.stopTrackEvent = function (name, properties, measurements) {\r\n                try {\r\n                    _eventTracking.stop(name, undefined, properties); // Todo: Fix to pass measurements once type is updated\r\n                }\r\n                catch (e) {\r\n                    _self.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.StopTrackEventFailed, \"stopTrackEvent failed, event will not be collected: \" + getExceptionName(e), { exception: dumpObj(e) });\r\n                }\r\n            };\r\n            /**\r\n             * @description Log a diagnostic message\r\n             * @param {ITraceTelemetry} trace\r\n             * @param ICustomProperties.\r\n             * @memberof ApplicationInsights\r\n             */\r\n            _self.trackTrace = function (trace, customProperties) {\r\n                try {\r\n                    var telemetryItem = TelemetryItemCreator.create(trace, Trace.dataType, Trace.envelopeType, _self.diagLog(), customProperties);\r\n                    _self.core.track(telemetryItem);\r\n                }\r\n                catch (e) {\r\n                    _self.diagLog().throwInternal(LoggingSeverity.WARNING, _InternalMessageId.TrackTraceFailed, \"trackTrace failed, trace will not be collected: \" + getExceptionName(e), { exception: dumpObj(e) });\r\n                }\r\n            };\r\n            /**\r\n             * @description Log a numeric value that is not associated with a specific event. Typically\r\n             * used to send regular reports of performance indicators. To send single measurement, just\r\n             * use the name and average fields of {@link IMetricTelemetry}. If you take measurements\r\n             * frequently, you can reduce the telemetry bandwidth by aggregating multiple measurements\r\n             * and sending the resulting average at intervals\r\n             * @param {IMetricTelemetry} metric input object argument. Only name and average are mandatory.\r\n             * @param {{[key: string]: any}} customProperties additional data used to filter metrics in the\r\n             * portal. Defaults to empty.\r\n             * @memberof ApplicationInsights\r\n             */\r\n            _self.trackMetric = function (metric, customProperties) {\r\n                try {\r\n                    var telemetryItem = TelemetryItemCreator.create(metric, Metric.dataType, Metric.envelopeType, _self.diagLog(), customProperties);\r\n                    _self.core.track(telemetryItem);\r\n                }\r\n                catch (e) {\r\n                    _self.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.TrackMetricFailed, \"trackMetric failed, metric will not be collected: \" + getExceptionName(e), { exception: dumpObj(e) });\r\n                }\r\n            };\r\n            /**\r\n             * Logs that a page or other item was viewed.\r\n             * @param IPageViewTelemetry The string you used as the name in startTrackPage. Defaults to the document title.\r\n             * @param customProperties Additional data used to filter events and metrics. Defaults to empty.\r\n             * If a user wants to provide duration for pageLoad, it'll have to be in pageView.properties.duration\r\n             */\r\n            _self.trackPageView = function (pageView, customProperties) {\r\n                try {\r\n                    var inPv = pageView || {};\r\n                    _self._pageViewManager.trackPageView(inPv, __assign(__assign(__assign({}, inPv.properties), inPv.measurements), customProperties));\r\n                    if (_self.config.autoTrackPageVisitTime) {\r\n                        _self._pageVisitTimeManager.trackPreviousPageVisit(inPv.name, inPv.uri);\r\n                    }\r\n                }\r\n                catch (e) {\r\n                    _self.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.TrackPVFailed, \"trackPageView failed, page view will not be collected: \" + getExceptionName(e), { exception: dumpObj(e) });\r\n                }\r\n            };\r\n            /**\r\n             * Create a page view telemetry item and send it to the SDK pipeline through the core.track API\r\n             * @param pageView Page view item to be sent\r\n             * @param properties Custom properties (Part C) that a user can add to the telemetry item\r\n             * @param systemProperties System level properties (Part A) that a user can add to the telemetry item\r\n             */\r\n            _self.sendPageViewInternal = function (pageView, properties, systemProperties) {\r\n                var doc = getDocument();\r\n                if (doc) {\r\n                    pageView.refUri = pageView.refUri === undefined ? doc.referrer : pageView.refUri;\r\n                }\r\n                var telemetryItem = TelemetryItemCreator.create(pageView, PageView.dataType, PageView.envelopeType, _self.diagLog(), properties, systemProperties);\r\n                _self.core.track(telemetryItem);\r\n                // reset ajaxes counter\r\n                _trackAjaxAttempts = 0;\r\n            };\r\n            /**\r\n             * @ignore INTERNAL ONLY\r\n             * @param pageViewPerformance\r\n             * @param properties\r\n             */\r\n            _self.sendPageViewPerformanceInternal = function (pageViewPerformance, properties, systemProperties) {\r\n                var telemetryItem = TelemetryItemCreator.create(pageViewPerformance, PageViewPerformance.dataType, PageViewPerformance.envelopeType, _self.diagLog(), properties, systemProperties);\r\n                _self.core.track(telemetryItem);\r\n            };\r\n            /**\r\n             * Send browser performance metrics.\r\n             * @param pageViewPerformance\r\n             * @param customProperties\r\n             */\r\n            _self.trackPageViewPerformance = function (pageViewPerformance, customProperties) {\r\n                try {\r\n                    _self._pageViewPerformanceManager.populatePageViewPerformanceEvent(pageViewPerformance);\r\n                    _self.sendPageViewPerformanceInternal(pageViewPerformance, customProperties);\r\n                }\r\n                catch (e) {\r\n                    _self.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.TrackPVFailed, \"trackPageViewPerformance failed, page view will not be collected: \" + getExceptionName(e), { exception: dumpObj(e) });\r\n                }\r\n            };\r\n            /**\r\n             * Starts the timer for tracking a page load time. Use this instead of `trackPageView` if you want to control when the page view timer starts and stops,\r\n             * but don't want to calculate the duration yourself. This method doesn't send any telemetry. Call `stopTrackPage` to log the end of the page view\r\n             * and send the event.\r\n             * @param name A string that idenfities this item, unique within this HTML document. Defaults to the document title.\r\n             */\r\n            _self.startTrackPage = function (name) {\r\n                try {\r\n                    if (typeof name !== \"string\") {\r\n                        var doc = getDocument();\r\n                        name = doc && doc.title || \"\";\r\n                    }\r\n                    _pageTracking.start(name);\r\n                }\r\n                catch (e) {\r\n                    _self.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.StartTrackFailed, \"startTrackPage failed, page view may not be collected: \" + getExceptionName(e), { exception: dumpObj(e) });\r\n                }\r\n            };\r\n            /**\r\n             * Stops the timer that was started by calling `startTrackPage` and sends the pageview load time telemetry with the specified properties and measurements.\r\n             * The duration of the page view will be the time between calling `startTrackPage` and `stopTrackPage`.\r\n             * @param   name  The string you used as the name in startTrackPage. Defaults to the document title.\r\n             * @param   url   String - a relative or absolute URL that identifies the page or other item. Defaults to the window location.\r\n             * @param   properties  map[string, string] - additional data used to filter pages and metrics in the portal. Defaults to empty.\r\n             * @param   measurements    map[string, number] - metrics associated with this page, displayed in Metrics Explorer on the portal. Defaults to empty.\r\n             */\r\n            _self.stopTrackPage = function (name, url, properties, measurement) {\r\n                try {\r\n                    if (typeof name !== \"string\") {\r\n                        var doc = getDocument();\r\n                        name = doc && doc.title || \"\";\r\n                    }\r\n                    if (typeof url !== \"string\") {\r\n                        var loc = getLocation();\r\n                        url = loc && loc.href || \"\";\r\n                    }\r\n                    _pageTracking.stop(name, url, properties, measurement);\r\n                    if (_self.config.autoTrackPageVisitTime) {\r\n                        _self._pageVisitTimeManager.trackPreviousPageVisit(name, url);\r\n                    }\r\n                }\r\n                catch (e) {\r\n                    _self.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.StopTrackFailed, \"stopTrackPage failed, page view will not be collected: \" + getExceptionName(e), { exception: dumpObj(e) });\r\n                }\r\n            };\r\n            /**\r\n             * @ignore INTERNAL ONLY\r\n             * @param exception\r\n             * @param properties\r\n             * @param systemProperties\r\n             */\r\n            _self.sendExceptionInternal = function (exception, customProperties, systemProperties) {\r\n                var theError = exception.exception || exception.error || new Error(strNotSpecified);\r\n                var exceptionPartB = new Exception(_self.diagLog(), theError, exception.properties || customProperties, exception.measurements, exception.severityLevel, exception.id).toInterface();\r\n                var telemetryItem = TelemetryItemCreator.create(exceptionPartB, Exception.dataType, Exception.envelopeType, _self.diagLog(), customProperties, systemProperties);\r\n                _self.core.track(telemetryItem);\r\n            };\r\n            /**\r\n             * Log an exception you have caught.\r\n             *\r\n             * @param {IExceptionTelemetry} exception   Object which contains exception to be sent\r\n             * @param {{[key: string]: any}} customProperties   Additional data used to filter pages and metrics in the portal. Defaults to empty.\r\n             *\r\n             * Any property of type double will be considered a measurement, and will be treated by Application Insights as a metric.\r\n             * @memberof ApplicationInsights\r\n             */\r\n            _self.trackException = function (exception, customProperties) {\r\n                try {\r\n                    _self.sendExceptionInternal(exception, customProperties);\r\n                }\r\n                catch (e) {\r\n                    _self.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.TrackExceptionFailed, \"trackException failed, exception will not be collected: \" + getExceptionName(e), { exception: dumpObj(e) });\r\n                }\r\n            };\r\n            /**\r\n             * @description Custom error handler for Application Insights Analytics\r\n             * @param {IAutoExceptionTelemetry} exception\r\n             * @memberof ApplicationInsights\r\n             */\r\n            _self._onerror = function (exception) {\r\n                var error = exception && exception.error;\r\n                var evt = exception && exception.evt;\r\n                try {\r\n                    if (!evt) {\r\n                        var _window = getWindow();\r\n                        if (_window) {\r\n                            evt = _window[strEvent];\r\n                        }\r\n                    }\r\n                    var url = (exception && exception.url) || (getDocument() || {}).URL;\r\n                    // If no error source is provided assume the default window.onerror handler\r\n                    var errorSrc = exception.errorSrc || \"window.onerror@\" + url + \":\" + (exception.lineNumber || 0) + \":\" + (exception.columnNumber || 0);\r\n                    var properties = {\r\n                        errorSrc: errorSrc,\r\n                        url: url,\r\n                        lineNumber: exception.lineNumber || 0,\r\n                        columnNumber: exception.columnNumber || 0,\r\n                        message: exception.message\r\n                    };\r\n                    if (isCrossOriginError(exception.message, exception.url, exception.lineNumber, exception.columnNumber, exception.error)) {\r\n                        _sendCORSException(Exception.CreateAutoException(\"Script error: The browser's same-origin policy prevents us from getting the details of this exception. Consider using the 'crossorigin' attribute.\", url, exception.lineNumber || 0, exception.columnNumber || 0, error, evt, null, errorSrc), properties);\r\n                    }\r\n                    else {\r\n                        if (!exception.errorSrc) {\r\n                            exception.errorSrc = errorSrc;\r\n                        }\r\n                        _self.trackException({ exception: exception, severityLevel: SeverityLevel.Error }, properties);\r\n                    }\r\n                }\r\n                catch (e) {\r\n                    var errorString = error ? (error.name + \", \" + error.message) : \"null\";\r\n                    _self.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.ExceptionWhileLoggingError, \"_onError threw exception while logging error, error will not be collected: \"\r\n                        + getExceptionName(e), { exception: dumpObj(e), errorString: errorString });\r\n                }\r\n            };\r\n            _self.addTelemetryInitializer = function (telemetryInitializer) {\r\n                _self._telemetryInitializers.push(telemetryInitializer);\r\n            };\r\n            _self.initialize = function (config, core, extensions, pluginChain) {\r\n                if (_self.isInitialized()) {\r\n                    return;\r\n                }\r\n                if (isNullOrUndefined(core)) {\r\n                    throw Error(\"Error initializing\");\r\n                }\r\n                _base.initialize(config, core, extensions, pluginChain);\r\n                _self.setInitialized(false); // resetting the initialized state, just in case the following fails\r\n                var ctx = _self._getTelCtx();\r\n                var identifier = _self.identifier;\r\n                _self.config = ctx.getExtCfg(identifier);\r\n                // load default values if specified\r\n                var defaults = ApplicationInsights.getDefaultConfig(config);\r\n                if (defaults !== undefined) {\r\n                    objForEachKey(defaults, function (field, value) {\r\n                        // for each unspecified field, set the default value\r\n                        _self.config[field] = ctx.getConfig(identifier, field, value);\r\n                        if (_self.config[field] === undefined) {\r\n                            _self.config[field] = value;\r\n                        }\r\n                    });\r\n                }\r\n                // Todo: move this out of static state\r\n                if (_self.config.isStorageUseDisabled) {\r\n                    utlDisableStorage();\r\n                }\r\n                var configGetters = {\r\n                    instrumentationKey: function () { return config.instrumentationKey; },\r\n                    accountId: function () { return _self.config.accountId || config.accountId; },\r\n                    sessionRenewalMs: function () { return _self.config.sessionRenewalMs || config.sessionRenewalMs; },\r\n                    sessionExpirationMs: function () { return _self.config.sessionExpirationMs || config.sessionExpirationMs; },\r\n                    sampleRate: function () { return _self.config.samplingPercentage || config.samplingPercentage; },\r\n                    sdkExtension: function () { return _self.config.sdkExtension || config.sdkExtension; },\r\n                    isBrowserLinkTrackingEnabled: function () { return _self.config.isBrowserLinkTrackingEnabled || config.isBrowserLinkTrackingEnabled; },\r\n                    appId: function () { return _self.config.appId || config.appId; }\r\n                };\r\n                _self._pageViewPerformanceManager = new PageViewPerformanceManager(_self.core);\r\n                _self._pageViewManager = new PageViewManager(_this, _self.config.overridePageViewDuration, _self.core, _self._pageViewPerformanceManager);\r\n                _self._pageVisitTimeManager = new PageVisitTimeManager(_self.diagLog(), function (pageName, pageUrl, pageVisitTime) { return trackPageVisitTime(pageName, pageUrl, pageVisitTime); });\r\n                _self._telemetryInitializers = _self._telemetryInitializers || [];\r\n                _addDefaultTelemetryInitializers(configGetters);\r\n                _eventTracking = new Timing(_self.diagLog(), \"trackEvent\");\r\n                _eventTracking.action =\r\n                    function (name, url, duration, properties) {\r\n                        if (!properties) {\r\n                            properties = {};\r\n                        }\r\n                        properties[durationProperty] = duration.toString();\r\n                        _self.trackEvent({ name: name, properties: properties });\r\n                    };\r\n                // initialize page view timing\r\n                _pageTracking = new Timing(_self.diagLog(), \"trackPageView\");\r\n                _pageTracking.action = function (name, url, duration, properties, measurements) {\r\n                    // duration must be a custom property in order for the collector to extract it\r\n                    if (isNullOrUndefined(properties)) {\r\n                        properties = {};\r\n                    }\r\n                    properties[durationProperty] = duration.toString();\r\n                    var pageViewItem = {\r\n                        name: name,\r\n                        uri: url,\r\n                        properties: properties,\r\n                        measurements: measurements\r\n                    };\r\n                    _self.sendPageViewInternal(pageViewItem, properties);\r\n                };\r\n                var _window = getWindow();\r\n                var _history = getHistory();\r\n                var _location = getLocation(true);\r\n                var instance = _this;\r\n                if (_self.config.disableExceptionTracking === false &&\r\n                    !_self.config.autoExceptionInstrumented && _window) {\r\n                    // We want to enable exception auto collection and it has not been done so yet\r\n                    var onerror_1 = \"onerror\";\r\n                    var originalOnError_1 = _window[onerror_1];\r\n                    _window.onerror = function (message, url, lineNumber, columnNumber, error) {\r\n                        var evt = _window[strEvent];\r\n                        var handled = originalOnError_1 && originalOnError_1(message, url, lineNumber, columnNumber, error);\r\n                        if (handled !== true) { // handled could be typeof function\r\n                            instance._onerror(Exception.CreateAutoException(message, url, lineNumber, columnNumber, error, evt));\r\n                        }\r\n                        return handled;\r\n                    };\r\n                    _self.config.autoExceptionInstrumented = true;\r\n                }\r\n                if (_self.config.disableExceptionTracking === false &&\r\n                    _self.config.enableUnhandledPromiseRejectionTracking === true &&\r\n                    !_self.config.autoUnhandledPromiseInstrumented && _window) {\r\n                    // We want to enable exception auto collection and it has not been done so yet\r\n                    var onunhandledrejection_1 = \"onunhandledrejection\";\r\n                    var originalOnUnhandledRejection_1 = _window[onunhandledrejection_1];\r\n                    _window[onunhandledrejection_1] = function (error) {\r\n                        var evt = _window[strEvent];\r\n                        var handled = originalOnUnhandledRejection_1 && originalOnUnhandledRejection_1.call(_window, error);\r\n                        if (handled !== true) { // handled could be typeof function\r\n                            instance._onerror(Exception.CreateAutoException(_getReason(error), _location ? _location.href : \"\", 0, 0, error, evt));\r\n                        }\r\n                        return handled;\r\n                    };\r\n                    _self.config.autoUnhandledPromiseInstrumented = true;\r\n                }\r\n                /**\r\n                 * Create a custom \"locationchange\" event which is triggered each time the history object is changed\r\n                 */\r\n                if (_self.config.enableAutoRouteTracking === true\r\n                    && _history && isFunction(_history.pushState) && isFunction(_history.replaceState)\r\n                    && _window\r\n                    && typeof Event !== \"undefined\") {\r\n                    var _self_1 = _this;\r\n                    // Find the properties plugin\r\n                    arrForEach(extensions, function (extension) {\r\n                        if (extension.identifier === PropertiesPluginIdentifier) {\r\n                            _properties = extension;\r\n                        }\r\n                    });\r\n                    _history.pushState = (function (f) { return function pushState() {\r\n                        var ret = f.apply(this, arguments);\r\n                        _dispatchEvent(_window, createDomEvent(_self_1.config.namePrefix + \"pushState\"));\r\n                        _dispatchEvent(_window, createDomEvent(_self_1.config.namePrefix + \"locationchange\"));\r\n                        return ret;\r\n                    }; })(_history.pushState);\r\n                    _history.replaceState = (function (f) { return function replaceState() {\r\n                        var ret = f.apply(this, arguments);\r\n                        _dispatchEvent(_window, createDomEvent(_self_1.config.namePrefix + \"replaceState\"));\r\n                        _dispatchEvent(_window, createDomEvent(_self_1.config.namePrefix + \"locationchange\"));\r\n                        return ret;\r\n                    }; })(_history.replaceState);\r\n                    if (_window.addEventListener) {\r\n                        _window.addEventListener(_self_1.config.namePrefix + \"popstate\", function () {\r\n                            _dispatchEvent(_window, createDomEvent(_self_1.config.namePrefix + \"locationchange\"));\r\n                        });\r\n                        _window.addEventListener(_self_1.config.namePrefix + \"locationchange\", function () {\r\n                            if (_properties && _properties.context && _properties.context.telemetryTrace) {\r\n                                _properties.context.telemetryTrace.traceID = generateW3CId();\r\n                                var traceLocationName = \"_unknown_\";\r\n                                if (_location && _location.pathname) {\r\n                                    traceLocationName = _location.pathname + (_location.hash || \"\");\r\n                                }\r\n                                // This populates the ai.operation.name which has a maximum size of 1024 so we need to sanitize it\r\n                                _properties.context.telemetryTrace.name = dataSanitizeString(_self_1.diagLog(), traceLocationName);\r\n                            }\r\n                            if (_currUri) {\r\n                                _prevUri = _currUri;\r\n                                _currUri = _location && _location.href || \"\";\r\n                            }\r\n                            else {\r\n                                _currUri = _location && _location.href || \"\";\r\n                            }\r\n                            setTimeout((function (uri) {\r\n                                // todo: override start time so that it is not affected by autoRoutePVDelay\r\n                                _self_1.trackPageView({ refUri: uri, properties: { duration: 0 } }); // SPA route change loading durations are undefined, so send 0\r\n                            }).bind(_this, _prevUri), _self_1.autoRoutePVDelay);\r\n                        });\r\n                    }\r\n                }\r\n                _self.setInitialized(true);\r\n            };\r\n            /**\r\n             * Log a page visit time\r\n             * @param    pageName    Name of page\r\n             * @param    pageVisitDuration Duration of visit to the page in milleseconds\r\n             */\r\n            function trackPageVisitTime(pageName, pageUrl, pageVisitTime) {\r\n                var properties = { PageName: pageName, PageUrl: pageUrl };\r\n                _self.trackMetric({\r\n                    name: \"PageVisitTime\",\r\n                    average: pageVisitTime,\r\n                    max: pageVisitTime,\r\n                    min: pageVisitTime,\r\n                    sampleCount: 1\r\n                }, properties);\r\n            }\r\n            function _addDefaultTelemetryInitializers(configGetters) {\r\n                if (!configGetters.isBrowserLinkTrackingEnabled()) {\r\n                    var browserLinkPaths_1 = [\"/browserLinkSignalR/\", \"/__browserLink/\"];\r\n                    var dropBrowserLinkRequests = function (envelope) {\r\n                        if (envelope.baseType === RemoteDependencyData.dataType) {\r\n                            var remoteData = envelope.baseData;\r\n                            if (remoteData) {\r\n                                for (var i = 0; i < browserLinkPaths_1.length; i++) {\r\n                                    if (remoteData.target && remoteData.target.indexOf(browserLinkPaths_1[i]) >= 0) {\r\n                                        return false;\r\n                                    }\r\n                                }\r\n                            }\r\n                        }\r\n                        return true;\r\n                    };\r\n                    _addTelemetryInitializer(dropBrowserLinkRequests);\r\n                }\r\n            }\r\n            function _addTelemetryInitializer(telemetryInitializer) {\r\n                _self._telemetryInitializers.push(telemetryInitializer);\r\n            }\r\n            function _sendCORSException(exception, properties) {\r\n                var telemetryItem = TelemetryItemCreator.create(exception, Exception.dataType, Exception.envelopeType, _self.diagLog(), properties);\r\n                _self.core.track(telemetryItem);\r\n            }\r\n        });\r\n        return _this;\r\n    }\r\n    ApplicationInsights.getDefaultConfig = function (config) {\r\n        if (!config) {\r\n            config = {};\r\n        }\r\n        // set default values\r\n        config.sessionRenewalMs = 30 * 60 * 1000;\r\n        config.sessionExpirationMs = 24 * 60 * 60 * 1000;\r\n        config.disableExceptionTracking = stringToBoolOrDefault(config.disableExceptionTracking);\r\n        config.autoTrackPageVisitTime = stringToBoolOrDefault(config.autoTrackPageVisitTime);\r\n        config.overridePageViewDuration = stringToBoolOrDefault(config.overridePageViewDuration);\r\n        config.enableUnhandledPromiseRejectionTracking = stringToBoolOrDefault(config.enableUnhandledPromiseRejectionTracking);\r\n        if (isNaN(config.samplingPercentage) || config.samplingPercentage <= 0 || config.samplingPercentage >= 100) {\r\n            config.samplingPercentage = 100;\r\n        }\r\n        config.isStorageUseDisabled = stringToBoolOrDefault(config.isStorageUseDisabled);\r\n        config.isBrowserLinkTrackingEnabled = stringToBoolOrDefault(config.isBrowserLinkTrackingEnabled);\r\n        config.enableAutoRouteTracking = stringToBoolOrDefault(config.enableAutoRouteTracking);\r\n        config.namePrefix = config.namePrefix || \"\";\r\n        config.enableDebug = stringToBoolOrDefault(config.enableDebug);\r\n        config.disableFlushOnBeforeUnload = stringToBoolOrDefault(config.disableFlushOnBeforeUnload);\r\n        config.disableFlushOnUnload = stringToBoolOrDefault(config.disableFlushOnUnload, config.disableFlushOnBeforeUnload);\r\n        return config;\r\n    };\r\n    /**\r\n     * Get the current cookie manager for this instance\r\n     */\r\n    ApplicationInsights.prototype.getCookieMgr = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return null;\r\n    };\r\n    ApplicationInsights.prototype.processTelemetry = function (env, itemCtx) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    ApplicationInsights.prototype.trackEvent = function (event, customProperties) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Start timing an extended event. Call `stopTrackEvent` to log the event when it ends.\r\n     * @param   name    A string that identifies this event uniquely within the document.\r\n     */\r\n    ApplicationInsights.prototype.startTrackEvent = function (name) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Log an extended event that you started timing with `startTrackEvent`.\r\n     * @param   name    The string you used to identify this event in `startTrackEvent`.\r\n     * @param   properties  map[string, string] - additional data used to filter events and metrics in the portal. Defaults to empty.\r\n     * @param   measurements    map[string, number] - metrics associated with this event, displayed in Metrics Explorer on the portal. Defaults to empty.\r\n     */\r\n    ApplicationInsights.prototype.stopTrackEvent = function (name, properties, measurements) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * @description Log a diagnostic message\r\n     * @param {ITraceTelemetry} trace\r\n     * @param ICustomProperties.\r\n     * @memberof ApplicationInsights\r\n     */\r\n    ApplicationInsights.prototype.trackTrace = function (trace, customProperties) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * @description Log a numeric value that is not associated with a specific event. Typically\r\n     * used to send regular reports of performance indicators. To send single measurement, just\r\n     * use the name and average fields of {@link IMetricTelemetry}. If you take measurements\r\n     * frequently, you can reduce the telemetry bandwidth by aggregating multiple measurements\r\n     * and sending the resulting average at intervals\r\n     * @param {IMetricTelemetry} metric input object argument. Only name and average are mandatory.\r\n     * @param {{[key: string]: any}} customProperties additional data used to filter metrics in the\r\n     * portal. Defaults to empty.\r\n     * @memberof ApplicationInsights\r\n     */\r\n    ApplicationInsights.prototype.trackMetric = function (metric, customProperties) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Logs that a page or other item was viewed.\r\n     * @param IPageViewTelemetry The string you used as the name in startTrackPage. Defaults to the document title.\r\n     * @param customProperties Additional data used to filter events and metrics. Defaults to empty.\r\n     * If a user wants to provide duration for pageLoad, it'll have to be in pageView.properties.duration\r\n     */\r\n    ApplicationInsights.prototype.trackPageView = function (pageView, customProperties) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Create a page view telemetry item and send it to the SDK pipeline through the core.track API\r\n     * @param pageView Page view item to be sent\r\n     * @param properties Custom properties (Part C) that a user can add to the telemetry item\r\n     * @param systemProperties System level properties (Part A) that a user can add to the telemetry item\r\n     */\r\n    ApplicationInsights.prototype.sendPageViewInternal = function (pageView, properties, systemProperties) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * @ignore INTERNAL ONLY\r\n     * @param pageViewPerformance\r\n     * @param properties\r\n     */\r\n    ApplicationInsights.prototype.sendPageViewPerformanceInternal = function (pageViewPerformance, properties, systemProperties) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Send browser performance metrics.\r\n     * @param pageViewPerformance\r\n     * @param customProperties\r\n     */\r\n    ApplicationInsights.prototype.trackPageViewPerformance = function (pageViewPerformance, customProperties) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Starts the timer for tracking a page load time. Use this instead of `trackPageView` if you want to control when the page view timer starts and stops,\r\n     * but don't want to calculate the duration yourself. This method doesn't send any telemetry. Call `stopTrackPage` to log the end of the page view\r\n     * and send the event.\r\n     * @param name A string that idenfities this item, unique within this HTML document. Defaults to the document title.\r\n     */\r\n    ApplicationInsights.prototype.startTrackPage = function (name) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Stops the timer that was started by calling `startTrackPage` and sends the pageview load time telemetry with the specified properties and measurements.\r\n     * The duration of the page view will be the time between calling `startTrackPage` and `stopTrackPage`.\r\n     * @param   name  The string you used as the name in startTrackPage. Defaults to the document title.\r\n     * @param   url   String - a relative or absolute URL that identifies the page or other item. Defaults to the window location.\r\n     * @param   properties  map[string, string] - additional data used to filter pages and metrics in the portal. Defaults to empty.\r\n     * @param   measurements    map[string, number] - metrics associated with this page, displayed in Metrics Explorer on the portal. Defaults to empty.\r\n     */\r\n    ApplicationInsights.prototype.stopTrackPage = function (name, url, properties, measurement) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * @ignore INTERNAL ONLY\r\n     * @param exception\r\n     * @param properties\r\n     * @param systemProperties\r\n     */\r\n    ApplicationInsights.prototype.sendExceptionInternal = function (exception, customProperties, systemProperties) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Log an exception you have caught.\r\n     *\r\n     * @param {IExceptionTelemetry} exception   Object which contains exception to be sent\r\n     * @param {{[key: string]: any}} customProperties   Additional data used to filter pages and metrics in the portal. Defaults to empty.\r\n     *\r\n     * Any property of type double will be considered a measurement, and will be treated by Application Insights as a metric.\r\n     * @memberof ApplicationInsights\r\n     */\r\n    ApplicationInsights.prototype.trackException = function (exception, customProperties) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * @description Custom error handler for Application Insights Analytics\r\n     * @param {IAutoExceptionTelemetry} exception\r\n     * @memberof ApplicationInsights\r\n     */\r\n    ApplicationInsights.prototype._onerror = function (exception) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    ApplicationInsights.prototype.addTelemetryInitializer = function (telemetryInitializer) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    ApplicationInsights.prototype.initialize = function (config, core, extensions, pluginChain) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    ApplicationInsights.Version = \"2.7.1\"; // Not currently used anywhere\r\n    return ApplicationInsights;\r\n}(BaseTelemetryPlugin));\r\nexport { ApplicationInsights };\r\n/**\r\n * Used to record timed events and page views.\r\n */\r\nvar Timing = /** @class */ (function () {\r\n    function Timing(logger, name) {\r\n        var _self = this;\r\n        var _events = {};\r\n        _self.start = function (name) {\r\n            if (typeof _events[name] !== \"undefined\") {\r\n                logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.StartCalledMoreThanOnce, \"start was called more than once for this event without calling stop.\", { name: name, key: name }, true);\r\n            }\r\n            _events[name] = +new Date;\r\n        };\r\n        _self.stop = function (name, url, properties, measurements) {\r\n            var start = _events[name];\r\n            if (isNaN(start)) {\r\n                logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.StopCalledWithoutStart, \"stop was called without a corresponding start.\", { name: name, key: name }, true);\r\n            }\r\n            else {\r\n                var end = +new Date;\r\n                var duration = dateTimeUtilsDuration(start, end);\r\n                _self.action(name, url, duration, properties, measurements);\r\n            }\r\n            delete _events[name];\r\n            _events[name] = undefined;\r\n        };\r\n    }\r\n    return Timing;\r\n}());\r\n//# sourceMappingURL=ApplicationInsights.js.map","import { __extends } from \"tslib\";\r\nimport { utlGetSessionStorage, utlSetSessionStorage } from \"@microsoft/applicationinsights-common\";\r\nimport { LoggingSeverity, _InternalMessageId, getJSON, arrForEach, isFunction, arrIndexOf, isString, dumpObj, isArray, getExceptionName } from \"@microsoft/applicationinsights-core-js\";\r\nimport dynamicProto from \"@microsoft/dynamicproto-js\";\r\nvar BaseSendBuffer = /** @class */ (function () {\r\n    function BaseSendBuffer(logger, config) {\r\n        var _buffer = [];\r\n        var _bufferFullMessageSent = false;\r\n        this._get = function () {\r\n            return _buffer;\r\n        };\r\n        this._set = function (buffer) {\r\n            _buffer = buffer;\r\n            return _buffer;\r\n        };\r\n        dynamicProto(BaseSendBuffer, this, function (_self) {\r\n            _self.enqueue = function (payload) {\r\n                if (_self.count() >= config.eventsLimitInMem()) {\r\n                    // sent internal log only once per page view\r\n                    if (!_bufferFullMessageSent) {\r\n                        logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.InMemoryStorageBufferFull, \"Maximum in-memory buffer size reached: \" + _self.count(), true);\r\n                        _bufferFullMessageSent = true;\r\n                    }\r\n                    return;\r\n                }\r\n                _buffer.push(payload);\r\n            };\r\n            _self.count = function () {\r\n                return _buffer.length;\r\n            };\r\n            _self.size = function () {\r\n                var size = _buffer.length;\r\n                for (var lp = 0; lp < _buffer.length; lp++) {\r\n                    size += _buffer[lp].length;\r\n                }\r\n                if (!config.emitLineDelimitedJson()) {\r\n                    size += 2;\r\n                }\r\n                return size;\r\n            };\r\n            _self.clear = function () {\r\n                _buffer = [];\r\n                _bufferFullMessageSent = false;\r\n            };\r\n            _self.getItems = function () {\r\n                return _buffer.slice(0);\r\n            };\r\n            _self.batchPayloads = function (payload) {\r\n                if (payload && payload.length > 0) {\r\n                    var batch = config.emitLineDelimitedJson() ?\r\n                        payload.join(\"\\n\") :\r\n                        \"[\" + payload.join(\",\") + \"]\";\r\n                    return batch;\r\n                }\r\n                return null;\r\n            };\r\n        });\r\n    }\r\n    BaseSendBuffer.prototype.enqueue = function (payload) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    BaseSendBuffer.prototype.count = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return 0;\r\n    };\r\n    BaseSendBuffer.prototype.size = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return 0;\r\n    };\r\n    BaseSendBuffer.prototype.clear = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    BaseSendBuffer.prototype.getItems = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return null;\r\n    };\r\n    BaseSendBuffer.prototype.batchPayloads = function (payload) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return null;\r\n    };\r\n    return BaseSendBuffer;\r\n}());\r\n/*\r\n * An array based send buffer.\r\n */\r\nvar ArraySendBuffer = /** @class */ (function (_super) {\r\n    __extends(ArraySendBuffer, _super);\r\n    function ArraySendBuffer(logger, config) {\r\n        var _this = _super.call(this, logger, config) || this;\r\n        dynamicProto(ArraySendBuffer, _this, function (_self, _base) {\r\n            _self.markAsSent = function (payload) {\r\n                _base.clear();\r\n            };\r\n            _self.clearSent = function (payload) {\r\n                // not supported\r\n            };\r\n        });\r\n        return _this;\r\n    }\r\n    ArraySendBuffer.prototype.markAsSent = function (payload) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    ArraySendBuffer.prototype.clearSent = function (payload) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    return ArraySendBuffer;\r\n}(BaseSendBuffer));\r\nexport { ArraySendBuffer };\r\n/*\r\n * Session storage buffer holds a copy of all unsent items in the browser session storage.\r\n */\r\nvar SessionStorageSendBuffer = /** @class */ (function (_super) {\r\n    __extends(SessionStorageSendBuffer, _super);\r\n    function SessionStorageSendBuffer(logger, config) {\r\n        var _this = _super.call(this, logger, config) || this;\r\n        var _bufferFullMessageSent = false;\r\n        dynamicProto(SessionStorageSendBuffer, _this, function (_self, _base) {\r\n            var bufferItems = _getBuffer(SessionStorageSendBuffer.BUFFER_KEY);\r\n            var notDeliveredItems = _getBuffer(SessionStorageSendBuffer.SENT_BUFFER_KEY);\r\n            var buffer = _self._set(bufferItems.concat(notDeliveredItems));\r\n            // If the buffer has too many items, drop items from the end.\r\n            if (buffer.length > SessionStorageSendBuffer.MAX_BUFFER_SIZE) {\r\n                buffer.length = SessionStorageSendBuffer.MAX_BUFFER_SIZE;\r\n            }\r\n            _setBuffer(SessionStorageSendBuffer.SENT_BUFFER_KEY, []);\r\n            _setBuffer(SessionStorageSendBuffer.BUFFER_KEY, buffer);\r\n            _self.enqueue = function (payload) {\r\n                if (_self.count() >= SessionStorageSendBuffer.MAX_BUFFER_SIZE) {\r\n                    // sent internal log only once per page view\r\n                    if (!_bufferFullMessageSent) {\r\n                        logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.SessionStorageBufferFull, \"Maximum buffer size reached: \" + _self.count(), true);\r\n                        _bufferFullMessageSent = true;\r\n                    }\r\n                    return;\r\n                }\r\n                _base.enqueue(payload);\r\n                _setBuffer(SessionStorageSendBuffer.BUFFER_KEY, _self._get());\r\n            };\r\n            _self.clear = function () {\r\n                _base.clear();\r\n                _setBuffer(SessionStorageSendBuffer.BUFFER_KEY, _self._get());\r\n                _setBuffer(SessionStorageSendBuffer.SENT_BUFFER_KEY, []);\r\n                _bufferFullMessageSent = false;\r\n            };\r\n            _self.markAsSent = function (payload) {\r\n                _setBuffer(SessionStorageSendBuffer.BUFFER_KEY, _self._set(_removePayloadsFromBuffer(payload, _self._get())));\r\n                var sentElements = _getBuffer(SessionStorageSendBuffer.SENT_BUFFER_KEY);\r\n                if (sentElements instanceof Array && payload instanceof Array) {\r\n                    sentElements = sentElements.concat(payload);\r\n                    if (sentElements.length > SessionStorageSendBuffer.MAX_BUFFER_SIZE) {\r\n                        // We send telemetry normally. If the SENT_BUFFER is too big we don't add new elements\r\n                        // until we receive a response from the backend and the buffer has free space again (see clearSent method)\r\n                        logger.throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.SessionStorageBufferFull, \"Sent buffer reached its maximum size: \" + sentElements.length, true);\r\n                        sentElements.length = SessionStorageSendBuffer.MAX_BUFFER_SIZE;\r\n                    }\r\n                    _setBuffer(SessionStorageSendBuffer.SENT_BUFFER_KEY, sentElements);\r\n                }\r\n            };\r\n            _self.clearSent = function (payload) {\r\n                var sentElements = _getBuffer(SessionStorageSendBuffer.SENT_BUFFER_KEY);\r\n                sentElements = _removePayloadsFromBuffer(payload, sentElements);\r\n                _setBuffer(SessionStorageSendBuffer.SENT_BUFFER_KEY, sentElements);\r\n            };\r\n            function _removePayloadsFromBuffer(payloads, buffer) {\r\n                var remaining = [];\r\n                arrForEach(buffer, function (value) {\r\n                    if (!isFunction(value) && arrIndexOf(payloads, value) === -1) {\r\n                        remaining.push(value);\r\n                    }\r\n                });\r\n                return remaining;\r\n            }\r\n            function _getBuffer(key) {\r\n                var prefixedKey = key;\r\n                try {\r\n                    prefixedKey = config.namePrefix && config.namePrefix() ? config.namePrefix() + \"_\" + prefixedKey : prefixedKey;\r\n                    var bufferJson = utlGetSessionStorage(logger, prefixedKey);\r\n                    if (bufferJson) {\r\n                        var buffer_1 = getJSON().parse(bufferJson);\r\n                        if (isString(buffer_1)) {\r\n                            // When using some version prototype.js the stringify / parse cycle does not decode array's correctly\r\n                            buffer_1 = getJSON().parse(buffer_1);\r\n                        }\r\n                        if (buffer_1 && isArray(buffer_1)) {\r\n                            return buffer_1;\r\n                        }\r\n                    }\r\n                }\r\n                catch (e) {\r\n                    logger.throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.FailedToRestoreStorageBuffer, \" storage key: \" + prefixedKey + \", \" + getExceptionName(e), { exception: dumpObj(e) });\r\n                }\r\n                return [];\r\n            }\r\n            function _setBuffer(key, buffer) {\r\n                var prefixedKey = key;\r\n                try {\r\n                    prefixedKey = config.namePrefix && config.namePrefix() ? config.namePrefix() + \"_\" + prefixedKey : prefixedKey;\r\n                    var bufferJson = JSON.stringify(buffer);\r\n                    utlSetSessionStorage(logger, prefixedKey, bufferJson);\r\n                }\r\n                catch (e) {\r\n                    // if there was an error, clear the buffer\r\n                    // telemetry is stored in the _buffer array so we won't loose any items\r\n                    utlSetSessionStorage(logger, prefixedKey, JSON.stringify([]));\r\n                    logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.FailedToSetStorageBuffer, \" storage key: \" + prefixedKey + \", \" + getExceptionName(e) + \". Buffer cleared\", { exception: dumpObj(e) });\r\n                }\r\n            }\r\n        });\r\n        return _this;\r\n    }\r\n    SessionStorageSendBuffer.prototype.enqueue = function (payload) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    SessionStorageSendBuffer.prototype.clear = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    SessionStorageSendBuffer.prototype.markAsSent = function (payload) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    SessionStorageSendBuffer.prototype.clearSent = function (payload) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    SessionStorageSendBuffer.BUFFER_KEY = \"AI_buffer\";\r\n    SessionStorageSendBuffer.SENT_BUFFER_KEY = \"AI_sentBuffer\";\r\n    // Maximum number of payloads stored in the buffer. If the buffer is full, new elements will be dropped.\r\n    SessionStorageSendBuffer.MAX_BUFFER_SIZE = 2000;\r\n    return SessionStorageSendBuffer;\r\n}(BaseSendBuffer));\r\nexport { SessionStorageSendBuffer };\r\n//# sourceMappingURL=SendBuffer.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { __extends } from \"tslib\";\r\nimport { createClassFromInterface } from \"@microsoft/applicationinsights-core-js\";\r\nfunction _aiNameFunc(baseName) {\r\n    var aiName = \"ai.\" + baseName + \".\";\r\n    return function (name) {\r\n        return aiName + name;\r\n    };\r\n}\r\nvar _aiApplication = _aiNameFunc(\"application\");\r\nvar _aiDevice = _aiNameFunc(\"device\");\r\nvar _aiLocation = _aiNameFunc(\"location\");\r\nvar _aiOperation = _aiNameFunc(\"operation\");\r\nvar _aiSession = _aiNameFunc(\"session\");\r\nvar _aiUser = _aiNameFunc(\"user\");\r\nvar _aiCloud = _aiNameFunc(\"cloud\");\r\nvar _aiInternal = _aiNameFunc(\"internal\");\r\nvar ContextTagKeys = /** @class */ (function (_super) {\r\n    __extends(ContextTagKeys, _super);\r\n    function ContextTagKeys() {\r\n        return _super.call(this) || this;\r\n    }\r\n    return ContextTagKeys;\r\n}(createClassFromInterface({\r\n    applicationVersion: _aiApplication(\"ver\"),\r\n    applicationBuild: _aiApplication(\"build\"),\r\n    applicationTypeId: _aiApplication(\"typeId\"),\r\n    applicationId: _aiApplication(\"applicationId\"),\r\n    applicationLayer: _aiApplication(\"layer\"),\r\n    deviceId: _aiDevice(\"id\"),\r\n    deviceIp: _aiDevice(\"ip\"),\r\n    deviceLanguage: _aiDevice(\"language\"),\r\n    deviceLocale: _aiDevice(\"locale\"),\r\n    deviceModel: _aiDevice(\"model\"),\r\n    deviceFriendlyName: _aiDevice(\"friendlyName\"),\r\n    deviceNetwork: _aiDevice(\"network\"),\r\n    deviceNetworkName: _aiDevice(\"networkName\"),\r\n    deviceOEMName: _aiDevice(\"oemName\"),\r\n    deviceOS: _aiDevice(\"os\"),\r\n    deviceOSVersion: _aiDevice(\"osVersion\"),\r\n    deviceRoleInstance: _aiDevice(\"roleInstance\"),\r\n    deviceRoleName: _aiDevice(\"roleName\"),\r\n    deviceScreenResolution: _aiDevice(\"screenResolution\"),\r\n    deviceType: _aiDevice(\"type\"),\r\n    deviceMachineName: _aiDevice(\"machineName\"),\r\n    deviceVMName: _aiDevice(\"vmName\"),\r\n    deviceBrowser: _aiDevice(\"browser\"),\r\n    deviceBrowserVersion: _aiDevice(\"browserVersion\"),\r\n    locationIp: _aiLocation(\"ip\"),\r\n    locationCountry: _aiLocation(\"country\"),\r\n    locationProvince: _aiLocation(\"province\"),\r\n    locationCity: _aiLocation(\"city\"),\r\n    operationId: _aiOperation(\"id\"),\r\n    operationName: _aiOperation(\"name\"),\r\n    operationParentId: _aiOperation(\"parentId\"),\r\n    operationRootId: _aiOperation(\"rootId\"),\r\n    operationSyntheticSource: _aiOperation(\"syntheticSource\"),\r\n    operationCorrelationVector: _aiOperation(\"correlationVector\"),\r\n    sessionId: _aiSession(\"id\"),\r\n    sessionIsFirst: _aiSession(\"isFirst\"),\r\n    sessionIsNew: _aiSession(\"isNew\"),\r\n    userAccountAcquisitionDate: _aiUser(\"accountAcquisitionDate\"),\r\n    userAccountId: _aiUser(\"accountId\"),\r\n    userAgent: _aiUser(\"userAgent\"),\r\n    userId: _aiUser(\"id\"),\r\n    userStoreRegion: _aiUser(\"storeRegion\"),\r\n    userAuthUserId: _aiUser(\"authUserId\"),\r\n    userAnonymousUserAcquisitionDate: _aiUser(\"anonUserAcquisitionDate\"),\r\n    userAuthenticatedUserAcquisitionDate: _aiUser(\"authUserAcquisitionDate\"),\r\n    cloudName: _aiCloud(\"name\"),\r\n    cloudRole: _aiCloud(\"role\"),\r\n    cloudRoleVer: _aiCloud(\"roleVer\"),\r\n    cloudRoleInstance: _aiCloud(\"roleInstance\"),\r\n    cloudEnvironment: _aiCloud(\"environment\"),\r\n    cloudLocation: _aiCloud(\"location\"),\r\n    cloudDeploymentUnit: _aiCloud(\"deploymentUnit\"),\r\n    internalNodeName: _aiInternal(\"nodeName\"),\r\n    internalSdkVersion: _aiInternal(\"sdkVersion\"),\r\n    internalAgentVersion: _aiInternal(\"agentVersion\"),\r\n    internalSnippet: _aiInternal(\"snippet\"),\r\n    internalSdkSrc: _aiInternal(\"sdkSrc\")\r\n})));\r\nexport { ContextTagKeys };\r\n//# sourceMappingURL=ContextTagKeys.js.map","import { ContextTagKeys } from \"./Contracts/Generated/ContextTagKeys\";\r\nexport var Extensions = {\r\n    UserExt: \"user\",\r\n    DeviceExt: \"device\",\r\n    TraceExt: \"trace\",\r\n    WebExt: \"web\",\r\n    AppExt: \"app\",\r\n    OSExt: \"os\",\r\n    SessionExt: \"ses\",\r\n    SDKExt: \"sdk\"\r\n};\r\nexport var CtxTagKeys = new ContextTagKeys();\r\n//# sourceMappingURL=PartAExtensions.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { __extends } from \"tslib\";\r\nimport { Envelope as AIEnvelope } from \"../../Interfaces/Contracts/Generated/Envelope\";\r\nimport { dataSanitizeString } from \"./DataSanitizer\";\r\nimport { toISOString } from \"@microsoft/applicationinsights-core-js\";\r\nimport { strNotSpecified } from \"../../Constants\";\r\nvar Envelope = /** @class */ (function (_super) {\r\n    __extends(Envelope, _super);\r\n    /**\r\n     * Constructs a new instance of telemetry data.\r\n     */\r\n    function Envelope(logger, data, name) {\r\n        var _this = _super.call(this) || this;\r\n        _this.name = dataSanitizeString(logger, name) || strNotSpecified;\r\n        _this.data = data;\r\n        _this.time = toISOString(new Date());\r\n        _this.aiDataContract = {\r\n            time: 1 /* Required */,\r\n            iKey: 1 /* Required */,\r\n            name: 1 /* Required */,\r\n            sampleRate: function () {\r\n                return (_this.sampleRate === 100) ? 4 /* Hidden */ : 1 /* Required */;\r\n            },\r\n            tags: 1 /* Required */,\r\n            data: 1 /* Required */\r\n        };\r\n        return _this;\r\n    }\r\n    return Envelope;\r\n}(AIEnvelope));\r\nexport { Envelope };\r\n//# sourceMappingURL=Envelope.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n// THIS FILE WAS AUTOGENERATED\r\n/**\r\n * Data struct to contain only C section with custom fields.\r\n */\r\nvar Base = /** @class */ (function () {\r\n    function Base() {\r\n    }\r\n    return Base;\r\n}());\r\nexport { Base };\r\n//# sourceMappingURL=Base.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { __extends } from \"tslib\";\r\nimport { Data as AIData } from \"../../Interfaces/Contracts/Generated/Data\";\r\nvar Data = /** @class */ (function (_super) {\r\n    __extends(Data, _super);\r\n    /**\r\n     * Constructs a new instance of telemetry data.\r\n     */\r\n    function Data(baseType, data) {\r\n        var _this = _super.call(this) || this;\r\n        /**\r\n         * The data contract for serializing this object.\r\n         */\r\n        _this.aiDataContract = {\r\n            baseType: 1 /* Required */,\r\n            baseData: 1 /* Required */\r\n        };\r\n        _this.baseType = baseType;\r\n        _this.baseData = data;\r\n        return _this;\r\n    }\r\n    return Data;\r\n}(AIData));\r\nexport { Data };\r\n//# sourceMappingURL=Data.js.map","import { __assign } from \"tslib\";\r\nimport { Data, Envelope, RemoteDependencyData, Event, Exception, Metric, PageView, Trace, PageViewPerformance, CtxTagKeys, HttpMethod, SampleRate, dataSanitizeString } from \"@microsoft/applicationinsights-common\";\r\nimport { LoggingSeverity, _InternalMessageId, hasJSON, getJSON, objForEachKey, isNullOrUndefined, isNumber, isString, toISOString, setValue, isTruthy, optimizeObject } from \"@microsoft/applicationinsights-core-js\";\r\n// these two constants are used to filter out properties not needed when trying to extract custom properties and measurements from the incoming payload\r\nvar strBaseType = \"baseType\";\r\nvar strBaseData = \"baseData\";\r\nvar strProperties = \"properties\";\r\nvar strTrue = \"true\";\r\nfunction _setValueIf(target, field, value) {\r\n    return setValue(target, field, value, isTruthy);\r\n}\r\n/*\r\n * Maps Part A data from CS 4.0\r\n */\r\nfunction _extractPartAExtensions(logger, item, env) {\r\n    // todo: switch to keys from common in this method\r\n    var envTags = env.tags = env.tags || {};\r\n    var itmExt = item.ext = item.ext || {};\r\n    var itmTags = item.tags = item.tags || [];\r\n    var extUser = itmExt.user;\r\n    if (extUser) {\r\n        _setValueIf(envTags, CtxTagKeys.userAuthUserId, extUser.authId);\r\n        _setValueIf(envTags, CtxTagKeys.userId, extUser.id || extUser.localId);\r\n    }\r\n    var extApp = itmExt.app;\r\n    if (extApp) {\r\n        _setValueIf(envTags, CtxTagKeys.sessionId, extApp.sesId);\r\n    }\r\n    var extDevice = itmExt.device;\r\n    if (extDevice) {\r\n        _setValueIf(envTags, CtxTagKeys.deviceId, extDevice.id || extDevice.localId);\r\n        _setValueIf(envTags, CtxTagKeys.deviceType, extDevice.deviceClass);\r\n        _setValueIf(envTags, CtxTagKeys.deviceIp, extDevice.ip);\r\n        _setValueIf(envTags, CtxTagKeys.deviceModel, extDevice.model);\r\n        _setValueIf(envTags, CtxTagKeys.deviceType, extDevice.deviceType);\r\n    }\r\n    var web = item.ext.web;\r\n    if (web) {\r\n        _setValueIf(envTags, CtxTagKeys.deviceLanguage, web.browserLang);\r\n        _setValueIf(envTags, CtxTagKeys.deviceBrowserVersion, web.browserVer);\r\n        _setValueIf(envTags, CtxTagKeys.deviceBrowser, web.browser);\r\n        var envData = env.data = env.data || {};\r\n        var envBaseData = envData[strBaseData] = envData[strBaseData] || {};\r\n        var envProps = envBaseData[strProperties] = envBaseData[strProperties] || {};\r\n        _setValueIf(envProps, \"domain\", web.domain);\r\n        _setValueIf(envProps, \"isManual\", web.isManual ? strTrue : null);\r\n        _setValueIf(envProps, \"screenRes\", web.screenRes);\r\n        _setValueIf(envProps, \"userConsent\", web.userConsent ? strTrue : null);\r\n    }\r\n    var extOs = itmExt.os;\r\n    if (extOs) {\r\n        _setValueIf(envTags, CtxTagKeys.deviceOS, extOs.name);\r\n    }\r\n    // No support for mapping Trace.traceState to 2.0 as it is currently empty\r\n    var extTrace = itmExt.trace;\r\n    if (extTrace) {\r\n        _setValueIf(envTags, CtxTagKeys.operationParentId, extTrace.parentID);\r\n        _setValueIf(envTags, CtxTagKeys.operationName, dataSanitizeString(logger, extTrace.name));\r\n        _setValueIf(envTags, CtxTagKeys.operationId, extTrace.traceID);\r\n    }\r\n    // Sample 4.0 schema\r\n    //  {\r\n    //     \"time\" : \"2018-09-05T22:51:22.4936Z\",\r\n    //     \"name\" : \"MetricWithNamespace\",\r\n    //     \"iKey\" : \"ABC-5a4cbd20-e601-4ef5-a3c6-5d6577e4398e\",\r\n    //     \"ext\": {  \"cloud\": {\r\n    //          \"role\": \"WATSON3\",\r\n    //          \"roleInstance\": \"CO4AEAP00000260\"\r\n    //      },\r\n    //      \"device\": {}, \"correlation\": {} },\r\n    //      \"tags\": [\r\n    //        { \"amazon.region\" : \"east2\" },\r\n    //        { \"os.expid\" : \"wp:02df239\" }\r\n    //     ]\r\n    //   }\r\n    var tgs = {};\r\n    // deals with tags.push({object})\r\n    for (var i = itmTags.length - 1; i >= 0; i--) {\r\n        var tg = itmTags[i];\r\n        objForEachKey(tg, function (key, value) {\r\n            tgs[key] = value;\r\n        });\r\n        itmTags.splice(i, 1);\r\n    }\r\n    // deals with tags[key]=value (and handles hasOwnProperty)\r\n    objForEachKey(itmTags, function (tg, value) {\r\n        tgs[tg] = value;\r\n    });\r\n    var theTags = __assign(__assign({}, envTags), tgs);\r\n    if (!theTags[CtxTagKeys.internalSdkVersion]) {\r\n        // Append a version in case it is not already set\r\n        theTags[CtxTagKeys.internalSdkVersion] = \"javascript:\" + EnvelopeCreator.Version;\r\n    }\r\n    env.tags = optimizeObject(theTags);\r\n}\r\nfunction _extractPropsAndMeasurements(data, properties, measurements) {\r\n    if (!isNullOrUndefined(data)) {\r\n        objForEachKey(data, function (key, value) {\r\n            if (isNumber(value)) {\r\n                measurements[key] = value;\r\n            }\r\n            else if (isString(value)) {\r\n                properties[key] = value;\r\n            }\r\n            else if (hasJSON()) {\r\n                properties[key] = getJSON().stringify(value);\r\n            }\r\n        });\r\n    }\r\n}\r\nfunction _convertPropsUndefinedToCustomDefinedValue(properties, customUndefinedValue) {\r\n    if (!isNullOrUndefined(properties)) {\r\n        objForEachKey(properties, function (key, value) {\r\n            properties[key] = value || customUndefinedValue;\r\n        });\r\n    }\r\n}\r\n// TODO: Do we want this to take logger as arg or use this._logger as nonstatic?\r\nfunction _createEnvelope(logger, envelopeType, telemetryItem, data) {\r\n    var envelope = new Envelope(logger, data, envelopeType);\r\n    _setValueIf(envelope, \"sampleRate\", telemetryItem[SampleRate]);\r\n    if ((telemetryItem[strBaseData] || {}).startTime) {\r\n        envelope.time = toISOString(telemetryItem[strBaseData].startTime);\r\n    }\r\n    envelope.iKey = telemetryItem.iKey;\r\n    var iKeyNoDashes = telemetryItem.iKey.replace(/-/g, \"\");\r\n    envelope.name = envelope.name.replace(\"{0}\", iKeyNoDashes);\r\n    // extract all extensions from ctx\r\n    _extractPartAExtensions(logger, telemetryItem, envelope);\r\n    // loop through the envelope tags (extension of Part A) and pick out the ones that should go in outgoing envelope tags\r\n    telemetryItem.tags = telemetryItem.tags || [];\r\n    return optimizeObject(envelope);\r\n}\r\nfunction EnvelopeCreatorInit(logger, telemetryItem) {\r\n    if (isNullOrUndefined(telemetryItem[strBaseData])) {\r\n        logger.throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.TelemetryEnvelopeInvalid, \"telemetryItem.baseData cannot be null.\");\r\n    }\r\n}\r\nexport var EnvelopeCreator = {\r\n    Version: \"2.7.1\"\r\n};\r\nexport function DependencyEnvelopeCreator(logger, telemetryItem, customUndefinedValue) {\r\n    EnvelopeCreatorInit(logger, telemetryItem);\r\n    var customMeasurements = telemetryItem[strBaseData].measurements || {};\r\n    var customProperties = telemetryItem[strBaseData][strProperties] || {};\r\n    _extractPropsAndMeasurements(telemetryItem.data, customProperties, customMeasurements);\r\n    if (!isNullOrUndefined(customUndefinedValue)) {\r\n        _convertPropsUndefinedToCustomDefinedValue(customProperties, customUndefinedValue);\r\n    }\r\n    var bd = telemetryItem[strBaseData];\r\n    if (isNullOrUndefined(bd)) {\r\n        logger.warnToConsole(\"Invalid input for dependency data\");\r\n        return null;\r\n    }\r\n    var method = bd[strProperties] && bd[strProperties][HttpMethod] ? bd[strProperties][HttpMethod] : \"GET\";\r\n    var remoteDepData = new RemoteDependencyData(logger, bd.id, bd.target, bd.name, bd.duration, bd.success, bd.responseCode, method, bd.type, bd.correlationContext, customProperties, customMeasurements);\r\n    var data = new Data(RemoteDependencyData.dataType, remoteDepData);\r\n    return _createEnvelope(logger, RemoteDependencyData.envelopeType, telemetryItem, data);\r\n}\r\nexport function EventEnvelopeCreator(logger, telemetryItem, customUndefinedValue) {\r\n    EnvelopeCreatorInit(logger, telemetryItem);\r\n    var customProperties = {};\r\n    var customMeasurements = {};\r\n    if (telemetryItem[strBaseType] !== Event.dataType) {\r\n        customProperties[\"baseTypeSource\"] = telemetryItem[strBaseType]; // save the passed in base type as a property\r\n    }\r\n    if (telemetryItem[strBaseType] === Event.dataType) { // take collection\r\n        customProperties = telemetryItem[strBaseData][strProperties] || {};\r\n        customMeasurements = telemetryItem[strBaseData].measurements || {};\r\n    }\r\n    else { // if its not a known type, convert to custom event\r\n        if (telemetryItem[strBaseData]) {\r\n            _extractPropsAndMeasurements(telemetryItem[strBaseData], customProperties, customMeasurements);\r\n        }\r\n    }\r\n    // Extract root level properties from part C telemetryItem.data\r\n    _extractPropsAndMeasurements(telemetryItem.data, customProperties, customMeasurements);\r\n    if (!isNullOrUndefined(customUndefinedValue)) {\r\n        _convertPropsUndefinedToCustomDefinedValue(customProperties, customUndefinedValue);\r\n    }\r\n    var eventName = telemetryItem[strBaseData].name;\r\n    var eventData = new Event(logger, eventName, customProperties, customMeasurements);\r\n    var data = new Data(Event.dataType, eventData);\r\n    return _createEnvelope(logger, Event.envelopeType, telemetryItem, data);\r\n}\r\nexport function ExceptionEnvelopeCreator(logger, telemetryItem, customUndefinedValue) {\r\n    EnvelopeCreatorInit(logger, telemetryItem);\r\n    // Extract root level properties from part C telemetryItem.data\r\n    var customMeasurements = telemetryItem[strBaseData].measurements || {};\r\n    var customProperties = telemetryItem[strBaseData][strProperties] || {};\r\n    _extractPropsAndMeasurements(telemetryItem.data, customProperties, customMeasurements);\r\n    if (!isNullOrUndefined(customUndefinedValue)) {\r\n        _convertPropsUndefinedToCustomDefinedValue(customProperties, customUndefinedValue);\r\n    }\r\n    var bd = telemetryItem[strBaseData];\r\n    var exData = Exception.CreateFromInterface(logger, bd, customProperties, customMeasurements);\r\n    var data = new Data(Exception.dataType, exData);\r\n    return _createEnvelope(logger, Exception.envelopeType, telemetryItem, data);\r\n}\r\nexport function MetricEnvelopeCreator(logger, telemetryItem, customUndefinedValue) {\r\n    EnvelopeCreatorInit(logger, telemetryItem);\r\n    var baseData = telemetryItem[strBaseData];\r\n    var props = baseData[strProperties] || {};\r\n    var measurements = baseData.measurements || {};\r\n    _extractPropsAndMeasurements(telemetryItem.data, props, measurements);\r\n    if (!isNullOrUndefined(customUndefinedValue)) {\r\n        _convertPropsUndefinedToCustomDefinedValue(props, customUndefinedValue);\r\n    }\r\n    var baseMetricData = new Metric(logger, baseData.name, baseData.average, baseData.sampleCount, baseData.min, baseData.max, props, measurements);\r\n    var data = new Data(Metric.dataType, baseMetricData);\r\n    return _createEnvelope(logger, Metric.envelopeType, telemetryItem, data);\r\n}\r\nexport function PageViewEnvelopeCreator(logger, telemetryItem, customUndefinedValue) {\r\n    EnvelopeCreatorInit(logger, telemetryItem);\r\n    // Since duration is not part of the domain properties in Common Schema, extract it from part C\r\n    var strDuration = \"duration\";\r\n    var duration;\r\n    var baseData = telemetryItem[strBaseData];\r\n    if (!isNullOrUndefined(baseData) &&\r\n        !isNullOrUndefined(baseData[strProperties]) &&\r\n        !isNullOrUndefined(baseData[strProperties][strDuration])) { // from part B properties\r\n        duration = baseData[strProperties][strDuration];\r\n        delete baseData[strProperties][strDuration];\r\n    }\r\n    else if (!isNullOrUndefined(telemetryItem.data) &&\r\n        !isNullOrUndefined(telemetryItem.data[strDuration])) { // from custom properties\r\n        duration = telemetryItem.data[strDuration];\r\n        delete telemetryItem.data[strDuration];\r\n    }\r\n    var bd = telemetryItem[strBaseData];\r\n    // special case: pageview.id is grabbed from current operation id. Analytics plugin is decoupled from properties plugin, so this is done here instead. This can be made a default telemetry intializer instead if needed to be decoupled from channel\r\n    var currentContextId;\r\n    if (((telemetryItem.ext || {}).trace || {}).traceID) {\r\n        currentContextId = telemetryItem.ext.trace.traceID;\r\n    }\r\n    var id = bd.id || currentContextId;\r\n    var name = bd.name;\r\n    var url = bd.uri;\r\n    var properties = bd[strProperties] || {};\r\n    var measurements = bd.measurements || {};\r\n    // refUri is a field that Breeze still does not recognize as part of Part B. For now, put it in Part C until it supports it as a domain property\r\n    if (!isNullOrUndefined(bd.refUri)) {\r\n        properties[\"refUri\"] = bd.refUri;\r\n    }\r\n    // pageType is a field that Breeze still does not recognize as part of Part B. For now, put it in Part C until it supports it as a domain property\r\n    if (!isNullOrUndefined(bd.pageType)) {\r\n        properties[\"pageType\"] = bd.pageType;\r\n    }\r\n    // isLoggedIn is a field that Breeze still does not recognize as part of Part B. For now, put it in Part C until it supports it as a domain property\r\n    if (!isNullOrUndefined(bd.isLoggedIn)) {\r\n        properties[\"isLoggedIn\"] = bd.isLoggedIn.toString();\r\n    }\r\n    // pageTags is a field that Breeze still does not recognize as part of Part B. For now, put it in Part C until it supports it as a domain property\r\n    if (!isNullOrUndefined(bd[strProperties])) {\r\n        var pageTags = bd[strProperties];\r\n        objForEachKey(pageTags, function (key, value) {\r\n            properties[key] = value;\r\n        });\r\n    }\r\n    _extractPropsAndMeasurements(telemetryItem.data, properties, measurements);\r\n    if (!isNullOrUndefined(customUndefinedValue)) {\r\n        _convertPropsUndefinedToCustomDefinedValue(properties, customUndefinedValue);\r\n    }\r\n    var pageViewData = new PageView(logger, name, url, duration, properties, measurements, id);\r\n    var data = new Data(PageView.dataType, pageViewData);\r\n    return _createEnvelope(logger, PageView.envelopeType, telemetryItem, data);\r\n}\r\nexport function PageViewPerformanceEnvelopeCreator(logger, telemetryItem, customUndefinedValue) {\r\n    EnvelopeCreatorInit(logger, telemetryItem);\r\n    var bd = telemetryItem[strBaseData];\r\n    var name = bd.name;\r\n    var url = bd.uri || bd.url;\r\n    var properties = bd[strProperties] || {};\r\n    var measurements = bd.measurements || {};\r\n    _extractPropsAndMeasurements(telemetryItem.data, properties, measurements);\r\n    if (!isNullOrUndefined(customUndefinedValue)) {\r\n        _convertPropsUndefinedToCustomDefinedValue(properties, customUndefinedValue);\r\n    }\r\n    var baseData = new PageViewPerformance(logger, name, url, undefined, properties, measurements, bd);\r\n    var data = new Data(PageViewPerformance.dataType, baseData);\r\n    return _createEnvelope(logger, PageViewPerformance.envelopeType, telemetryItem, data);\r\n}\r\nexport function TraceEnvelopeCreator(logger, telemetryItem, customUndefinedValue) {\r\n    EnvelopeCreatorInit(logger, telemetryItem);\r\n    var message = telemetryItem[strBaseData].message;\r\n    var severityLevel = telemetryItem[strBaseData].severityLevel;\r\n    var props = telemetryItem[strBaseData][strProperties] || {};\r\n    var measurements = telemetryItem[strBaseData].measurements || {};\r\n    _extractPropsAndMeasurements(telemetryItem.data, props, measurements);\r\n    if (!isNullOrUndefined(customUndefinedValue)) {\r\n        _convertPropsUndefinedToCustomDefinedValue(props, customUndefinedValue);\r\n    }\r\n    var baseData = new Trace(logger, message, severityLevel, props, measurements);\r\n    var data = new Data(Trace.dataType, baseData);\r\n    return _createEnvelope(logger, Trace.envelopeType, telemetryItem, data);\r\n}\r\n//# sourceMappingURL=EnvelopeCreator.js.map","import { LoggingSeverity, _InternalMessageId, getJSON, objForEachKey, isFunction, isObject, isArray } from \"@microsoft/applicationinsights-core-js\";\r\nimport dynamicProto from \"@microsoft/dynamicproto-js\";\r\nvar Serializer = /** @class */ (function () {\r\n    function Serializer(logger) {\r\n        dynamicProto(Serializer, this, function (_self) {\r\n            /**\r\n             * Serializes the current object to a JSON string.\r\n             */\r\n            _self.serialize = function (input) {\r\n                var output = _serializeObject(input, \"root\");\r\n                try {\r\n                    return getJSON().stringify(output);\r\n                }\r\n                catch (e) {\r\n                    // if serialization fails return an empty string\r\n                    logger.throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.CannotSerializeObject, (e && isFunction(e.toString)) ? e.toString() : \"Error serializing object\", null, true);\r\n                }\r\n            };\r\n            function _serializeObject(source, name) {\r\n                var circularReferenceCheck = \"__aiCircularRefCheck\";\r\n                var output = {};\r\n                if (!source) {\r\n                    logger.throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.CannotSerializeObject, \"cannot serialize object because it is null or undefined\", { name: name }, true);\r\n                    return output;\r\n                }\r\n                if (source[circularReferenceCheck]) {\r\n                    logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.CircularReferenceDetected, \"Circular reference detected while serializing object\", { name: name }, true);\r\n                    return output;\r\n                }\r\n                if (!source.aiDataContract) {\r\n                    // special case for measurements/properties/tags\r\n                    if (name === \"measurements\") {\r\n                        output = _serializeStringMap(source, \"number\", name);\r\n                    }\r\n                    else if (name === \"properties\") {\r\n                        output = _serializeStringMap(source, \"string\", name);\r\n                    }\r\n                    else if (name === \"tags\") {\r\n                        output = _serializeStringMap(source, \"string\", name);\r\n                    }\r\n                    else if (isArray(source)) {\r\n                        output = _serializeArray(source, name);\r\n                    }\r\n                    else {\r\n                        logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.CannotSerializeObjectNonSerializable, \"Attempting to serialize an object which does not implement ISerializable\", { name: name }, true);\r\n                        try {\r\n                            // verify that the object can be stringified\r\n                            getJSON().stringify(source);\r\n                            output = source;\r\n                        }\r\n                        catch (e) {\r\n                            // if serialization fails return an empty string\r\n                            logger.throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.CannotSerializeObject, (e && isFunction(e.toString)) ? e.toString() : \"Error serializing object\", null, true);\r\n                        }\r\n                    }\r\n                    return output;\r\n                }\r\n                source[circularReferenceCheck] = true;\r\n                objForEachKey(source.aiDataContract, function (field, contract) {\r\n                    var isRequired = (isFunction(contract)) ? (contract() & 1 /* Required */) : (contract & 1 /* Required */);\r\n                    var isHidden = (isFunction(contract)) ? (contract() & 4 /* Hidden */) : (contract & 4 /* Hidden */);\r\n                    var isArray = contract & 2 /* Array */;\r\n                    var isPresent = source[field] !== undefined;\r\n                    var isObj = isObject(source[field]) && source[field] !== null;\r\n                    if (isRequired && !isPresent && !isArray) {\r\n                        logger.throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.MissingRequiredFieldSpecification, \"Missing required field specification. The field is required but not present on source\", { field: field, name: name });\r\n                        // If not in debug mode, continue and hope the error is permissible\r\n                    }\r\n                    else if (!isHidden) { // Don't serialize hidden fields\r\n                        var value = void 0;\r\n                        if (isObj) {\r\n                            if (isArray) {\r\n                                // special case; recurse on each object in the source array\r\n                                value = _serializeArray(source[field], field);\r\n                            }\r\n                            else {\r\n                                // recurse on the source object in this field\r\n                                value = _serializeObject(source[field], field);\r\n                            }\r\n                        }\r\n                        else {\r\n                            // assign the source field to the output even if undefined or required\r\n                            value = source[field];\r\n                        }\r\n                        // only emit this field if the value is defined\r\n                        if (value !== undefined) {\r\n                            output[field] = value;\r\n                        }\r\n                    }\r\n                });\r\n                delete source[circularReferenceCheck];\r\n                return output;\r\n            }\r\n            function _serializeArray(sources, name) {\r\n                var output;\r\n                if (!!sources) {\r\n                    if (!isArray(sources)) {\r\n                        logger.throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.ItemNotInArray, \"This field was specified as an array in the contract but the item is not an array.\\r\\n\", { name: name }, true);\r\n                    }\r\n                    else {\r\n                        output = [];\r\n                        for (var i = 0; i < sources.length; i++) {\r\n                            var source = sources[i];\r\n                            var item = _serializeObject(source, name + \"[\" + i + \"]\");\r\n                            output.push(item);\r\n                        }\r\n                    }\r\n                }\r\n                return output;\r\n            }\r\n            function _serializeStringMap(map, expectedType, name) {\r\n                var output;\r\n                if (map) {\r\n                    output = {};\r\n                    objForEachKey(map, function (field, value) {\r\n                        if (expectedType === \"string\") {\r\n                            if (value === undefined) {\r\n                                output[field] = \"undefined\";\r\n                            }\r\n                            else if (value === null) {\r\n                                output[field] = \"null\";\r\n                            }\r\n                            else if (!value.toString) {\r\n                                output[field] = \"invalid field: toString() is not defined.\";\r\n                            }\r\n                            else {\r\n                                output[field] = value.toString();\r\n                            }\r\n                        }\r\n                        else if (expectedType === \"number\") {\r\n                            if (value === undefined) {\r\n                                output[field] = \"undefined\";\r\n                            }\r\n                            else if (value === null) {\r\n                                output[field] = \"null\";\r\n                            }\r\n                            else {\r\n                                var num = parseFloat(value);\r\n                                if (isNaN(num)) {\r\n                                    output[field] = \"NaN\";\r\n                                }\r\n                                else {\r\n                                    output[field] = num;\r\n                                }\r\n                            }\r\n                        }\r\n                        else {\r\n                            output[field] = \"invalid field: \" + name + \" is of unknown type.\";\r\n                            logger.throwInternal(LoggingSeverity.CRITICAL, output[field], null, true);\r\n                        }\r\n                    });\r\n                }\r\n                return output;\r\n            }\r\n        });\r\n    }\r\n    /**\r\n     * Serializes the current object to a JSON string.\r\n     */\r\n    Serializer.prototype.serialize = function (input) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return null;\r\n    };\r\n    return Serializer;\r\n}());\r\nexport { Serializer };\r\n//# sourceMappingURL=Serializer.js.map","var _a;\r\nimport { __assign, __extends } from \"tslib\";\r\nimport { SessionStorageSendBuffer, ArraySendBuffer } from \"./SendBuffer\";\r\nimport { DependencyEnvelopeCreator, EventEnvelopeCreator, ExceptionEnvelopeCreator, MetricEnvelopeCreator, PageViewEnvelopeCreator, PageViewPerformanceEnvelopeCreator, TraceEnvelopeCreator } from \"./EnvelopeCreator\";\r\nimport { Serializer } from \"./Serializer\"; // todo move to channel\r\nimport { DisabledPropertyName, RequestHeaders, PageView, Event, Trace, Exception, Metric, PageViewPerformance, RemoteDependencyData, ProcessLegacy, BreezeChannelIdentifier, SampleRate, isInternalApplicationInsightsEndpoint, utlCanUseSessionStorage } from \"@microsoft/applicationinsights-common\";\r\nimport { _InternalMessageId, LoggingSeverity, getWindow, getNavigator, getJSON, BaseTelemetryPlugin, objForEachKey, isNullOrUndefined, arrForEach, dateNow, dumpObj, getExceptionName, getIEVersion, throwError, objKeys, isBeaconsSupported, isFetchSupported, useXDomainRequest, isXhrSupported, isArray } from \"@microsoft/applicationinsights-core-js\";\r\nimport { Offline } from \"./Offline\";\r\nimport { Sample } from \"./TelemetryProcessors/Sample\";\r\nimport dynamicProto from \"@microsoft/dynamicproto-js\";\r\nvar FetchSyncRequestSizeLimitBytes = 65000; // approx 64kb (the current Edge, Firefox and Chrome max limit)\r\nfunction _getResponseText(xhr) {\r\n    try {\r\n        return xhr.responseText;\r\n    }\r\n    catch (e) {\r\n        // Best effort, as XHR may throw while XDR wont so just ignore\r\n    }\r\n    return null;\r\n}\r\nfunction _getDefaultAppInsightsChannelConfig() {\r\n    // set default values\r\n    return {\r\n        endpointUrl: function () { return \"https://dc.services.visualstudio.com/v2/track\"; },\r\n        emitLineDelimitedJson: function () { return false; },\r\n        maxBatchInterval: function () { return 15000; },\r\n        maxBatchSizeInBytes: function () { return 102400; },\r\n        disableTelemetry: function () { return false; },\r\n        enableSessionStorageBuffer: function () { return true; },\r\n        isRetryDisabled: function () { return false; },\r\n        isBeaconApiDisabled: function () { return true; },\r\n        disableXhr: function () { return false; },\r\n        onunloadDisableFetch: function () { return false; },\r\n        onunloadDisableBeacon: function () { return false; },\r\n        instrumentationKey: function () { return undefined; },\r\n        namePrefix: function () { return undefined; },\r\n        samplingPercentage: function () { return 100; },\r\n        customHeaders: function () { return undefined; },\r\n        convertUndefined: function () { return undefined; },\r\n        eventsLimitInMem: function () { return 10000; }\r\n    };\r\n}\r\nvar EnvelopeTypeCreator = (_a = {},\r\n    _a[Event.dataType] = EventEnvelopeCreator,\r\n    _a[Trace.dataType] = TraceEnvelopeCreator,\r\n    _a[PageView.dataType] = PageViewEnvelopeCreator,\r\n    _a[PageViewPerformance.dataType] = PageViewPerformanceEnvelopeCreator,\r\n    _a[Exception.dataType] = ExceptionEnvelopeCreator,\r\n    _a[Metric.dataType] = MetricEnvelopeCreator,\r\n    _a[RemoteDependencyData.dataType] = DependencyEnvelopeCreator,\r\n    _a);\r\nvar Sender = /** @class */ (function (_super) {\r\n    __extends(Sender, _super);\r\n    function Sender() {\r\n        var _this = _super.call(this) || this;\r\n        _this.priority = 1001;\r\n        _this.identifier = BreezeChannelIdentifier;\r\n        /**\r\n         * How many times in a row a retryable error condition has occurred.\r\n         */\r\n        var _consecutiveErrors;\r\n        /**\r\n         * The time to retry at in milliseconds from 1970/01/01 (this makes the timer calculation easy).\r\n         */\r\n        var _retryAt;\r\n        /**\r\n         * The time of the last send operation.\r\n         */\r\n        var _lastSend;\r\n        /**\r\n         * Flag indicating that the sending should be paused\r\n         */\r\n        var _paused = false;\r\n        /**\r\n         * Handle to the timer for delayed sending of batches of data.\r\n         */\r\n        var _timeoutHandle;\r\n        var _serializer;\r\n        var _stamp_specific_redirects;\r\n        var _headers = {};\r\n        // Keep track of the outstanding sync fetch payload total (as sync fetch has limits)\r\n        var _syncFetchPayload = 0;\r\n        /**\r\n         * The sender to use if the payload size is too large\r\n         */\r\n        var _fallbackSender;\r\n        /**\r\n         * The identified sender to use for the synchronous unload stage\r\n         */\r\n        var _syncUnloadSender;\r\n        _this._senderConfig = _getDefaultAppInsightsChannelConfig();\r\n        dynamicProto(Sender, _this, function (_self, _base) {\r\n            function _notImplemented() {\r\n                throwError(\"Method not implemented.\");\r\n            }\r\n            _self.pause = function () {\r\n                _clearScheduledTimer();\r\n                _paused = true;\r\n            };\r\n            _self.resume = function () {\r\n                if (_paused) {\r\n                    _paused = false;\r\n                    _retryAt = null;\r\n                    // flush if we have exceeded the max-size already\r\n                    if (_self._buffer.size() > _self._senderConfig.maxBatchSizeInBytes()) {\r\n                        _self.triggerSend(true, null, 10 /* MaxBatchSize */);\r\n                    }\r\n                    _setupTimer();\r\n                }\r\n            };\r\n            _self.flush = function () {\r\n                if (!_paused) {\r\n                    // Clear the normal schedule timer as we are going to try and flush ASAP\r\n                    _clearScheduledTimer();\r\n                    try {\r\n                        _self.triggerSend(true, null, 1 /* ManualFlush */);\r\n                    }\r\n                    catch (e) {\r\n                        _self.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.FlushFailed, \"flush failed, telemetry will not be collected: \" + getExceptionName(e), { exception: dumpObj(e) });\r\n                    }\r\n                }\r\n            };\r\n            _self.onunloadFlush = function () {\r\n                if (!_paused) {\r\n                    if ((_self._senderConfig.onunloadDisableBeacon() === false || _self._senderConfig.isBeaconApiDisabled() === false) && isBeaconsSupported()) {\r\n                        try {\r\n                            _self.triggerSend(true, _doUnloadSend, 2 /* Unload */);\r\n                        }\r\n                        catch (e) {\r\n                            _self.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.FailedToSendQueuedTelemetry, \"failed to flush with beacon sender on page unload, telemetry will not be collected: \" + getExceptionName(e), { exception: dumpObj(e) });\r\n                        }\r\n                    }\r\n                    else {\r\n                        _self.flush();\r\n                    }\r\n                }\r\n            };\r\n            _self.teardown = _notImplemented;\r\n            _self.addHeader = function (name, value) {\r\n                _headers[name] = value;\r\n            };\r\n            _self.initialize = function (config, core, extensions, pluginChain) {\r\n                _base.initialize(config, core, extensions, pluginChain);\r\n                var ctx = _self._getTelCtx();\r\n                var identifier = _self.identifier;\r\n                _serializer = new Serializer(core.logger);\r\n                _consecutiveErrors = 0;\r\n                _retryAt = null;\r\n                _lastSend = 0;\r\n                _self._sender = null;\r\n                _stamp_specific_redirects = 0;\r\n                var diagLog = _self.diagLog();\r\n                var defaultConfig = _getDefaultAppInsightsChannelConfig();\r\n                objForEachKey(defaultConfig, function (field, value) {\r\n                    _self._senderConfig[field] = function () { return ctx.getConfig(identifier, field, value()); };\r\n                });\r\n                _self._buffer = (_self._senderConfig.enableSessionStorageBuffer() && utlCanUseSessionStorage())\r\n                    ? new SessionStorageSendBuffer(diagLog, _self._senderConfig) : new ArraySendBuffer(diagLog, _self._senderConfig);\r\n                _self._sample = new Sample(_self._senderConfig.samplingPercentage(), diagLog);\r\n                if (!_validateInstrumentationKey(config)) {\r\n                    diagLog.throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.InvalidInstrumentationKey, \"Invalid Instrumentation key \" + config.instrumentationKey);\r\n                }\r\n                if (!isInternalApplicationInsightsEndpoint(_self._senderConfig.endpointUrl()) && _self._senderConfig.customHeaders() && _self._senderConfig.customHeaders().length > 0) {\r\n                    arrForEach(_self._senderConfig.customHeaders(), function (customHeader) {\r\n                        _this.addHeader(customHeader.header, customHeader.value);\r\n                    });\r\n                }\r\n                var senderConfig = _self._senderConfig;\r\n                var sendPostFunc = null;\r\n                if (!senderConfig.disableXhr() && useXDomainRequest()) {\r\n                    sendPostFunc = _xdrSender; // IE 8 and 9\r\n                }\r\n                else if (!senderConfig.disableXhr() && isXhrSupported()) {\r\n                    sendPostFunc = _xhrSender;\r\n                }\r\n                if (!sendPostFunc && isFetchSupported()) {\r\n                    sendPostFunc = _fetchSender;\r\n                }\r\n                // always fallback to XHR\r\n                _fallbackSender = sendPostFunc || _xhrSender;\r\n                if (!senderConfig.isBeaconApiDisabled() && isBeaconsSupported()) {\r\n                    // Config is set to always used beacon sending\r\n                    sendPostFunc = _beaconSender;\r\n                }\r\n                _self._sender = sendPostFunc || _xhrSender;\r\n                if (!senderConfig.onunloadDisableFetch() && isFetchSupported(true)) {\r\n                    // Try and use the fetch with keepalive\r\n                    _syncUnloadSender = _fetchKeepAliveSender;\r\n                }\r\n                else if (isBeaconsSupported()) {\r\n                    // Try and use sendBeacon\r\n                    _syncUnloadSender = _beaconSender;\r\n                }\r\n                else if (!senderConfig.disableXhr() && useXDomainRequest()) {\r\n                    _syncUnloadSender = _xdrSender; // IE 8 and 9\r\n                }\r\n                else if (!senderConfig.disableXhr() && isXhrSupported()) {\r\n                    _syncUnloadSender = _xhrSender;\r\n                }\r\n                else {\r\n                    _syncUnloadSender = _fallbackSender;\r\n                }\r\n            };\r\n            _self.processTelemetry = function (telemetryItem, itemCtx) {\r\n                itemCtx = _self._getTelCtx(itemCtx);\r\n                try {\r\n                    // if master off switch is set, don't send any data\r\n                    if (_self._senderConfig.disableTelemetry()) {\r\n                        // Do not send/save data\r\n                        return;\r\n                    }\r\n                    // validate input\r\n                    if (!telemetryItem) {\r\n                        itemCtx.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.CannotSendEmptyTelemetry, \"Cannot send empty telemetry\");\r\n                        return;\r\n                    }\r\n                    // validate event\r\n                    if (telemetryItem.baseData && !telemetryItem.baseType) {\r\n                        itemCtx.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.InvalidEvent, \"Cannot send telemetry without baseData and baseType\");\r\n                        return;\r\n                    }\r\n                    if (!telemetryItem.baseType) {\r\n                        // Default\r\n                        telemetryItem.baseType = \"EventData\";\r\n                    }\r\n                    // ensure a sender was constructed\r\n                    if (!_self._sender) {\r\n                        itemCtx.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.SenderNotInitialized, \"Sender was not initialized\");\r\n                        return;\r\n                    }\r\n                    // check if this item should be sampled in, else add sampleRate tag\r\n                    if (!_isSampledIn(telemetryItem)) {\r\n                        // Item is sampled out, do not send it\r\n                        itemCtx.diagLog().throwInternal(LoggingSeverity.WARNING, _InternalMessageId.TelemetrySampledAndNotSent, \"Telemetry item was sampled out and not sent\", { SampleRate: _self._sample.sampleRate });\r\n                        return;\r\n                    }\r\n                    else {\r\n                        telemetryItem[SampleRate] = _self._sample.sampleRate;\r\n                    }\r\n                    var convertUndefined = _self._senderConfig.convertUndefined() || undefined;\r\n                    // construct an envelope that Application Insights endpoint can understand\r\n                    // if ikey of telemetry is provided and not empty, envelope will use this iKey instead of senderConfig iKey\r\n                    var defaultEnvelopeIkey = telemetryItem.iKey || _self._senderConfig.instrumentationKey();\r\n                    var aiEnvelope_1 = Sender.constructEnvelope(telemetryItem, defaultEnvelopeIkey, itemCtx.diagLog(), convertUndefined);\r\n                    if (!aiEnvelope_1) {\r\n                        itemCtx.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.CreateEnvelopeError, \"Unable to create an AppInsights envelope\");\r\n                        return;\r\n                    }\r\n                    var doNotSendItem_1 = false;\r\n                    // this is for running in legacy mode, where customer may already have a custom initializer present\r\n                    if (telemetryItem.tags && telemetryItem.tags[ProcessLegacy]) {\r\n                        arrForEach(telemetryItem.tags[ProcessLegacy], function (callBack) {\r\n                            try {\r\n                                if (callBack && callBack(aiEnvelope_1) === false) {\r\n                                    doNotSendItem_1 = true;\r\n                                    itemCtx.diagLog().warnToConsole(\"Telemetry processor check returns false\");\r\n                                }\r\n                            }\r\n                            catch (e) {\r\n                                // log error but dont stop executing rest of the telemetry initializers\r\n                                // doNotSendItem = true;\r\n                                itemCtx.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.TelemetryInitializerFailed, \"One of telemetry initializers failed, telemetry item will not be sent: \" + getExceptionName(e), { exception: dumpObj(e) }, true);\r\n                            }\r\n                        });\r\n                        delete telemetryItem.tags[ProcessLegacy];\r\n                    }\r\n                    if (doNotSendItem_1) {\r\n                        return; // do not send, no need to execute next plugin\r\n                    }\r\n                    // check if the incoming payload is too large, truncate if necessary\r\n                    var payload = _serializer.serialize(aiEnvelope_1);\r\n                    // flush if we would exceed the max-size limit by adding this item\r\n                    var buffer = _self._buffer;\r\n                    var bufferSize = buffer.size();\r\n                    if ((bufferSize + payload.length) > _self._senderConfig.maxBatchSizeInBytes()) {\r\n                        _self.triggerSend(true, null, 10 /* MaxBatchSize */);\r\n                    }\r\n                    // enqueue the payload\r\n                    buffer.enqueue(payload);\r\n                    // ensure an invocation timeout is set\r\n                    _setupTimer();\r\n                }\r\n                catch (e) {\r\n                    itemCtx.diagLog().throwInternal(LoggingSeverity.WARNING, _InternalMessageId.FailedAddingTelemetryToBuffer, \"Failed adding telemetry to the sender's buffer, some telemetry will be lost: \" + getExceptionName(e), { exception: dumpObj(e) });\r\n                }\r\n                // hand off the telemetry item to the next plugin\r\n                _self.processNext(telemetryItem, itemCtx);\r\n            };\r\n            /**\r\n             * xhr state changes\r\n             */\r\n            _self._xhrReadyStateChange = function (xhr, payload, countOfItemsInPayload) {\r\n                if (xhr.readyState === 4) {\r\n                    _checkResponsStatus(xhr.status, payload, xhr.responseURL, countOfItemsInPayload, _formatErrorMessageXhr(xhr), _getResponseText(xhr) || xhr.response);\r\n                }\r\n            };\r\n            /**\r\n             * Immediately send buffered data\r\n             * @param async {boolean} - Indicates if the events should be sent asynchronously\r\n             * @param forcedSender {SenderFunction} - Indicates the forcedSender, undefined if not passed\r\n             */\r\n            _self.triggerSend = function (async, forcedSender, sendReason) {\r\n                if (async === void 0) { async = true; }\r\n                if (!_paused) {\r\n                    try {\r\n                        var buffer = _self._buffer;\r\n                        // Send data only if disableTelemetry is false\r\n                        if (!_self._senderConfig.disableTelemetry()) {\r\n                            if (buffer.count() > 0) {\r\n                                var payload = buffer.getItems();\r\n                                _notifySendRequest(sendReason || 0 /* Undefined */, async);\r\n                                // invoke send\r\n                                if (forcedSender) {\r\n                                    forcedSender.call(_this, payload, async);\r\n                                }\r\n                                else {\r\n                                    _self._sender(payload, async);\r\n                                }\r\n                            }\r\n                            // update lastSend time to enable throttling\r\n                            _lastSend = +new Date;\r\n                        }\r\n                        else {\r\n                            buffer.clear();\r\n                        }\r\n                        _clearScheduledTimer();\r\n                    }\r\n                    catch (e) {\r\n                        /* Ignore this error for IE under v10 */\r\n                        var ieVer = getIEVersion();\r\n                        if (!ieVer || ieVer > 9) {\r\n                            _self.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.TransmissionFailed, \"Telemetry transmission failed, some telemetry will be lost: \" + getExceptionName(e), { exception: dumpObj(e) });\r\n                        }\r\n                    }\r\n                }\r\n            };\r\n            /**\r\n             * error handler\r\n             */\r\n            _self._onError = function (payload, message, event) {\r\n                _self.diagLog().throwInternal(LoggingSeverity.WARNING, _InternalMessageId.OnError, \"Failed to send telemetry.\", { message: message });\r\n                _self._buffer.clearSent(payload);\r\n            };\r\n            /**\r\n             * partial success handler\r\n             */\r\n            _self._onPartialSuccess = function (payload, results) {\r\n                var failed = [];\r\n                var retry = [];\r\n                // Iterate through the reversed array of errors so that splicing doesn't have invalid indexes after the first item.\r\n                var errors = results.errors.reverse();\r\n                for (var _i = 0, errors_1 = errors; _i < errors_1.length; _i++) {\r\n                    var error = errors_1[_i];\r\n                    var extracted = payload.splice(error.index, 1)[0];\r\n                    if (_isRetriable(error.statusCode)) {\r\n                        retry.push(extracted);\r\n                    }\r\n                    else {\r\n                        // All other errors, including: 402 (Monthly quota exceeded) and 439 (Too many requests and refresh cache).\r\n                        failed.push(extracted);\r\n                    }\r\n                }\r\n                if (payload.length > 0) {\r\n                    _self._onSuccess(payload, results.itemsAccepted);\r\n                }\r\n                if (failed.length > 0) {\r\n                    _self._onError(failed, _formatErrorMessageXhr(null, [\"partial success\", results.itemsAccepted, \"of\", results.itemsReceived].join(\" \")));\r\n                }\r\n                if (retry.length > 0) {\r\n                    _resendPayload(retry);\r\n                    _self.diagLog().throwInternal(LoggingSeverity.WARNING, _InternalMessageId.TransmissionFailed, \"Partial success. \" +\r\n                        \"Delivered: \" + payload.length + \", Failed: \" + failed.length +\r\n                        \". Will retry to send \" + retry.length + \" our of \" + results.itemsReceived + \" items\");\r\n                }\r\n            };\r\n            /**\r\n             * success handler\r\n             */\r\n            _self._onSuccess = function (payload, countOfItemsInPayload) {\r\n                _self._buffer.clearSent(payload);\r\n            };\r\n            /**\r\n             * xdr state changes\r\n             */\r\n            _self._xdrOnLoad = function (xdr, payload) {\r\n                var responseText = _getResponseText(xdr);\r\n                if (xdr && (responseText + \"\" === \"200\" || responseText === \"\")) {\r\n                    _consecutiveErrors = 0;\r\n                    _self._onSuccess(payload, 0);\r\n                }\r\n                else {\r\n                    var results = _parseResponse(responseText);\r\n                    if (results && results.itemsReceived && results.itemsReceived > results.itemsAccepted\r\n                        && !_self._senderConfig.isRetryDisabled()) {\r\n                        _self._onPartialSuccess(payload, results);\r\n                    }\r\n                    else {\r\n                        _self._onError(payload, _formatErrorMessageXdr(xdr));\r\n                    }\r\n                }\r\n            };\r\n            function _isSampledIn(envelope) {\r\n                return _self._sample.isSampledIn(envelope);\r\n            }\r\n            function _checkResponsStatus(status, payload, responseUrl, countOfItemsInPayload, errorMessage, res) {\r\n                var response = null;\r\n                if (!_self._appId) {\r\n                    response = _parseResponse(res);\r\n                    if (response && response.appId) {\r\n                        _self._appId = response.appId;\r\n                    }\r\n                }\r\n                if ((status < 200 || status >= 300) && status !== 0) {\r\n                    // Update End Point url if permanent redirect or moved permanently\r\n                    // Updates the end point url before retry\r\n                    if (status === 301 || status === 307 || status === 308) {\r\n                        if (!_checkAndUpdateEndPointUrl(responseUrl)) {\r\n                            _self._onError(payload, errorMessage);\r\n                            return;\r\n                        }\r\n                    }\r\n                    if (!_self._senderConfig.isRetryDisabled() && _isRetriable(status)) {\r\n                        _resendPayload(payload);\r\n                        _self.diagLog().throwInternal(LoggingSeverity.WARNING, _InternalMessageId.TransmissionFailed, \". \" +\r\n                            \"Response code \" + status + \". Will retry to send \" + payload.length + \" items.\");\r\n                    }\r\n                    else {\r\n                        _self._onError(payload, errorMessage);\r\n                    }\r\n                }\r\n                else if (Offline.isOffline()) { // offline\r\n                    // Note: Don't check for status == 0, since adblock gives this code\r\n                    if (!_self._senderConfig.isRetryDisabled()) {\r\n                        var offlineBackOffMultiplier = 10; // arbritrary number\r\n                        _resendPayload(payload, offlineBackOffMultiplier);\r\n                        _self.diagLog().throwInternal(LoggingSeverity.WARNING, _InternalMessageId.TransmissionFailed, \". Offline - Response Code: \" + status + \". Offline status: \" + Offline.isOffline() + \". Will retry to send \" + payload.length + \" items.\");\r\n                    }\r\n                }\r\n                else {\r\n                    // check if the xhr's responseURL or fetch's response.url is same as endpoint url\r\n                    // TODO after 10 redirects force send telemetry with 'redirect=false' as query parameter.\r\n                    _checkAndUpdateEndPointUrl(responseUrl);\r\n                    if (status === 206) {\r\n                        if (!response) {\r\n                            response = _parseResponse(res);\r\n                        }\r\n                        if (response && !_self._senderConfig.isRetryDisabled()) {\r\n                            _self._onPartialSuccess(payload, response);\r\n                        }\r\n                        else {\r\n                            _self._onError(payload, errorMessage);\r\n                        }\r\n                    }\r\n                    else {\r\n                        _consecutiveErrors = 0;\r\n                        _self._onSuccess(payload, countOfItemsInPayload);\r\n                    }\r\n                }\r\n            }\r\n            function _checkAndUpdateEndPointUrl(responseUrl) {\r\n                // Maximum stamp specific redirects allowed(uncomment this when breeze is ready with not allowing redirects feature)\r\n                if (_stamp_specific_redirects >= 10) {\r\n                    //  _self._senderConfig.endpointUrl = () => Sender._getDefaultAppInsightsChannelConfig().endpointUrl()+\"/?redirect=false\";\r\n                    //  _stamp_specific_redirects = 0;\r\n                    return false;\r\n                }\r\n                if (!isNullOrUndefined(responseUrl) && responseUrl !== \"\") {\r\n                    if (responseUrl !== _self._senderConfig.endpointUrl()) {\r\n                        _self._senderConfig.endpointUrl = function () { return responseUrl; };\r\n                        ++_stamp_specific_redirects;\r\n                        return true;\r\n                    }\r\n                }\r\n                return false;\r\n            }\r\n            function _doUnloadSend(payload, isAsync) {\r\n                if (_syncUnloadSender) {\r\n                    // We are unloading so always call the sender with sync set to false\r\n                    _syncUnloadSender(payload, false);\r\n                }\r\n                else {\r\n                    // Fallback to the previous beacon Sender (which causes a CORB warning on chrome now)\r\n                    _beaconSender(payload, isAsync);\r\n                }\r\n            }\r\n            function _doBeaconSend(payload) {\r\n                var nav = getNavigator();\r\n                var buffer = _self._buffer;\r\n                var url = _self._senderConfig.endpointUrl();\r\n                var batch = _self._buffer.batchPayloads(payload);\r\n                // Chrome only allows CORS-safelisted values for the sendBeacon data argument\r\n                // see: https://bugs.chromium.org/p/chromium/issues/detail?id=720283\r\n                var plainTextBatch = new Blob([batch], { type: \"text/plain;charset=UTF-8\" });\r\n                // The sendBeacon method returns true if the user agent is able to successfully queue the data for transfer. Otherwise it returns false.\r\n                var queued = nav.sendBeacon(url, plainTextBatch);\r\n                if (queued) {\r\n                    buffer.markAsSent(payload);\r\n                    // no response from beaconSender, clear buffer\r\n                    _self._onSuccess(payload, payload.length);\r\n                }\r\n                return queued;\r\n            }\r\n            /**\r\n             * Send Beacon API request\r\n             * @param payload {string} - The data payload to be sent.\r\n             * @param isAsync {boolean} - not used\r\n             * Note: Beacon API does not support custom headers and we are not able to get\r\n             * appId from the backend for the correct correlation.\r\n             */\r\n            function _beaconSender(payload, isAsync) {\r\n                if (isArray(payload) && payload.length > 0) {\r\n                    // The sendBeacon method returns true if the user agent is able to successfully queue the data for transfer. Otherwise it returns false.\r\n                    if (!_doBeaconSend(payload)) {\r\n                        // Failed to send entire payload so try and split data and try to send as much events as possible\r\n                        var droppedPayload = [];\r\n                        for (var lp = 0; lp < payload.length; lp++) {\r\n                            var thePayload = payload[lp];\r\n                            if (!_doBeaconSend([thePayload])) {\r\n                                // Can't send anymore, so split the batch and drop the rest\r\n                                droppedPayload.push(thePayload);\r\n                            }\r\n                        }\r\n                        if (droppedPayload.length > 0) {\r\n                            _fallbackSender(droppedPayload, true);\r\n                            _self.diagLog().throwInternal(LoggingSeverity.WARNING, _InternalMessageId.TransmissionFailed, \". \" + \"Failed to send telemetry with Beacon API, retried with normal sender.\");\r\n                        }\r\n                    }\r\n                }\r\n            }\r\n            /**\r\n             * Send XMLHttpRequest\r\n             * @param payload {string} - The data payload to be sent.\r\n             * @param isAsync {boolean} - Indicates if the request should be sent asynchronously\r\n             */\r\n            function _xhrSender(payload, isAsync) {\r\n                var xhr = new XMLHttpRequest();\r\n                var endPointUrl = _self._senderConfig.endpointUrl();\r\n                try {\r\n                    xhr[DisabledPropertyName] = true;\r\n                }\r\n                catch (e) {\r\n                    // If the environment has locked down the XMLHttpRequest (preventExtensions and/or freeze), this would\r\n                    // cause the request to fail and we no telemetry would be sent\r\n                }\r\n                xhr.open(\"POST\", endPointUrl, isAsync);\r\n                xhr.setRequestHeader(\"Content-type\", \"application/json\");\r\n                // append Sdk-Context request header only in case of breeze endpoint\r\n                if (isInternalApplicationInsightsEndpoint(endPointUrl)) {\r\n                    xhr.setRequestHeader(RequestHeaders.sdkContextHeader, RequestHeaders.sdkContextHeaderAppIdRequest);\r\n                }\r\n                arrForEach(objKeys(_headers), function (headerName) {\r\n                    xhr.setRequestHeader(headerName, _headers[headerName]);\r\n                });\r\n                xhr.onreadystatechange = function () { return _self._xhrReadyStateChange(xhr, payload, payload.length); };\r\n                xhr.onerror = function (event) { return _self._onError(payload, _formatErrorMessageXhr(xhr), event); };\r\n                // compose an array of payloads\r\n                var batch = _self._buffer.batchPayloads(payload);\r\n                xhr.send(batch);\r\n                _self._buffer.markAsSent(payload);\r\n            }\r\n            function _fetchKeepAliveSender(payload, isAsync) {\r\n                if (isArray(payload)) {\r\n                    var payloadSize = payload.length;\r\n                    for (var lp = 0; lp < payload.length; lp++) {\r\n                        payloadSize += payload[lp].length;\r\n                    }\r\n                    if ((_syncFetchPayload + payloadSize) <= FetchSyncRequestSizeLimitBytes) {\r\n                        _doFetchSender(payload, false);\r\n                    }\r\n                    else if (isBeaconsSupported()) {\r\n                        // Fallback to beacon sender as we at least get told which events can't be scheduled\r\n                        _beaconSender(payload, isAsync);\r\n                    }\r\n                    else {\r\n                        // Payload is going to be too big so just try and send via XHR\r\n                        _fallbackSender && _fallbackSender(payload, true);\r\n                        _self.diagLog().throwInternal(LoggingSeverity.WARNING, _InternalMessageId.TransmissionFailed, \". \" + \"Failed to send telemetry with Beacon API, retried with xhrSender.\");\r\n                    }\r\n                }\r\n            }\r\n            /**\r\n             * Send fetch API request\r\n             * @param payload {string} - The data payload to be sent.\r\n             * @param isAsync {boolean} - not used\r\n             */\r\n            function _fetchSender(payload, isAsync) {\r\n                _doFetchSender(payload, true);\r\n            }\r\n            /**\r\n             * Send fetch API request\r\n             * @param payload {string} - The data payload to be sent.\r\n             * @param isAsync {boolean} - not used\r\n             */\r\n            function _doFetchSender(payload, isAsync) {\r\n                var _a;\r\n                var endPointUrl = _self._senderConfig.endpointUrl();\r\n                var batch = _self._buffer.batchPayloads(payload);\r\n                var plainTextBatch = new Blob([batch], { type: \"application/json\" });\r\n                var requestHeaders = new Headers();\r\n                var batchLength = batch.length;\r\n                // append Sdk-Context request header only in case of breeze endpoint\r\n                if (isInternalApplicationInsightsEndpoint(endPointUrl)) {\r\n                    requestHeaders.append(RequestHeaders.sdkContextHeader, RequestHeaders.sdkContextHeaderAppIdRequest);\r\n                }\r\n                arrForEach(objKeys(_headers), function (headerName) {\r\n                    requestHeaders.append(headerName, _headers[headerName]);\r\n                });\r\n                var init = (_a = {\r\n                        method: \"POST\",\r\n                        headers: requestHeaders,\r\n                        body: plainTextBatch\r\n                    },\r\n                    _a[DisabledPropertyName] = true // Mark so we don't attempt to track this request\r\n                ,\r\n                    _a);\r\n                if (!isAsync) {\r\n                    init.keepalive = true;\r\n                    _syncFetchPayload += batchLength;\r\n                }\r\n                var request = new Request(endPointUrl, init);\r\n                try {\r\n                    // Also try and tag the request (just in case the value in init is not copied over)\r\n                    request[DisabledPropertyName] = true;\r\n                }\r\n                catch (e) {\r\n                    // If the environment has locked down the XMLHttpRequest (preventExtensions and/or freeze), this would\r\n                    // cause the request to fail and we no telemetry would be sent\r\n                }\r\n                fetch(request).then(function (response) {\r\n                    if (!isAsync) {\r\n                        _syncFetchPayload -= batchLength;\r\n                        batchLength = 0;\r\n                    }\r\n                    /**\r\n                     * The Promise returned from fetch() won’t reject on HTTP error status even if the response is an HTTP 404 or 500.\r\n                     * Instead, it will resolve normally (with ok status set to false), and it will only reject on network failure\r\n                     * or if anything prevented the request from completing.\r\n                     */\r\n                    if (!response.ok) {\r\n                        _self._onError(payload, response.statusText);\r\n                    }\r\n                    else {\r\n                        response.text().then(function (text) {\r\n                            _checkResponsStatus(response.status, payload, response.url, payload.length, response.statusText, text);\r\n                        });\r\n                    }\r\n                })[\"catch\"](function (error) {\r\n                    if (!isAsync) {\r\n                        _syncFetchPayload -= batchLength;\r\n                        batchLength = 0;\r\n                    }\r\n                    _self._onError(payload, error.message);\r\n                });\r\n                _self._buffer.markAsSent(payload);\r\n            }\r\n            /**\r\n             * Parses the response from the backend.\r\n             * @param response - XMLHttpRequest or XDomainRequest response\r\n             */\r\n            function _parseResponse(response) {\r\n                try {\r\n                    if (response && response !== \"\") {\r\n                        var result = getJSON().parse(response);\r\n                        if (result && result.itemsReceived && result.itemsReceived >= result.itemsAccepted &&\r\n                            result.itemsReceived - result.itemsAccepted === result.errors.length) {\r\n                            return result;\r\n                        }\r\n                    }\r\n                }\r\n                catch (e) {\r\n                    _self.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.InvalidBackendResponse, \"Cannot parse the response. \" + getExceptionName(e), {\r\n                        response: response\r\n                    });\r\n                }\r\n                return null;\r\n            }\r\n            /**\r\n             * Resend payload. Adds payload back to the send buffer and setup a send timer (with exponential backoff).\r\n             * @param payload\r\n             */\r\n            function _resendPayload(payload, linearFactor) {\r\n                if (linearFactor === void 0) { linearFactor = 1; }\r\n                if (!payload || payload.length === 0) {\r\n                    return;\r\n                }\r\n                var buffer = _self._buffer;\r\n                buffer.clearSent(payload);\r\n                _consecutiveErrors++;\r\n                for (var _i = 0, payload_1 = payload; _i < payload_1.length; _i++) {\r\n                    var item = payload_1[_i];\r\n                    buffer.enqueue(item);\r\n                }\r\n                // setup timer\r\n                _setRetryTime(linearFactor);\r\n                _setupTimer();\r\n            }\r\n            /**\r\n             * Calculates the time to wait before retrying in case of an error based on\r\n             * http://en.wikipedia.org/wiki/Exponential_backoff\r\n             */\r\n            function _setRetryTime(linearFactor) {\r\n                var SlotDelayInSeconds = 10;\r\n                var delayInSeconds;\r\n                if (_consecutiveErrors <= 1) {\r\n                    delayInSeconds = SlotDelayInSeconds;\r\n                }\r\n                else {\r\n                    var backOffSlot = (Math.pow(2, _consecutiveErrors) - 1) / 2;\r\n                    // tslint:disable-next-line:insecure-random\r\n                    var backOffDelay = Math.floor(Math.random() * backOffSlot * SlotDelayInSeconds) + 1;\r\n                    backOffDelay = linearFactor * backOffDelay;\r\n                    delayInSeconds = Math.max(Math.min(backOffDelay, 3600), SlotDelayInSeconds);\r\n                }\r\n                // TODO: Log the backoff time like the C# version does.\r\n                var retryAfterTimeSpan = dateNow() + (delayInSeconds * 1000);\r\n                // TODO: Log the retry at time like the C# version does.\r\n                _retryAt = retryAfterTimeSpan;\r\n            }\r\n            /**\r\n             * Sets up the timer which triggers actually sending the data.\r\n             */\r\n            function _setupTimer() {\r\n                if (!_timeoutHandle && !_paused) {\r\n                    var retryInterval = _retryAt ? Math.max(0, _retryAt - dateNow()) : 0;\r\n                    var timerValue = Math.max(_self._senderConfig.maxBatchInterval(), retryInterval);\r\n                    _timeoutHandle = setTimeout(function () {\r\n                        _timeoutHandle = null;\r\n                        _self.triggerSend(true, null, 1 /* NormalSchedule */);\r\n                    }, timerValue);\r\n                }\r\n            }\r\n            function _clearScheduledTimer() {\r\n                clearTimeout(_timeoutHandle);\r\n                _timeoutHandle = null;\r\n                _retryAt = null;\r\n            }\r\n            /**\r\n             * Checks if the SDK should resend the payload after receiving this status code from the backend.\r\n             * @param statusCode\r\n             */\r\n            function _isRetriable(statusCode) {\r\n                return statusCode === 408 // Timeout\r\n                    || statusCode === 429 // Too many requests.\r\n                    || statusCode === 500 // Internal server error.\r\n                    || statusCode === 503; // Service unavailable.\r\n            }\r\n            function _formatErrorMessageXhr(xhr, message) {\r\n                if (xhr) {\r\n                    return \"XMLHttpRequest,Status:\" + xhr.status + \",Response:\" + _getResponseText(xhr) || xhr.response || \"\";\r\n                }\r\n                return message;\r\n            }\r\n            /**\r\n             * Send XDomainRequest\r\n             * @param payload {string} - The data payload to be sent.\r\n             * @param isAsync {boolean} - Indicates if the request should be sent asynchronously\r\n             *\r\n             * Note: XDomainRequest does not support sync requests. This 'isAsync' parameter is added\r\n             * to maintain consistency with the xhrSender's contract\r\n             * Note: XDomainRequest does not support custom headers and we are not able to get\r\n             * appId from the backend for the correct correlation.\r\n             */\r\n            function _xdrSender(payload, isAsync) {\r\n                var buffer = _self._buffer;\r\n                var _window = getWindow();\r\n                var xdr = new XDomainRequest();\r\n                xdr.onload = function () { return _self._xdrOnLoad(xdr, payload); };\r\n                xdr.onerror = function (event) { return _self._onError(payload, _formatErrorMessageXdr(xdr), event); };\r\n                // XDomainRequest requires the same protocol as the hosting page.\r\n                // If the protocol doesn't match, we can't send the telemetry :(.\r\n                var hostingProtocol = _window && _window.location && _window.location.protocol || \"\";\r\n                if (_self._senderConfig.endpointUrl().lastIndexOf(hostingProtocol, 0) !== 0) {\r\n                    _self.diagLog().throwInternal(LoggingSeverity.WARNING, _InternalMessageId.TransmissionFailed, \". \" +\r\n                        \"Cannot send XDomain request. The endpoint URL protocol doesn't match the hosting page protocol.\");\r\n                    buffer.clear();\r\n                    return;\r\n                }\r\n                var endpointUrl = _self._senderConfig.endpointUrl().replace(/^(https?:)/, \"\");\r\n                xdr.open(\"POST\", endpointUrl);\r\n                // compose an array of payloads\r\n                var batch = buffer.batchPayloads(payload);\r\n                xdr.send(batch);\r\n                buffer.markAsSent(payload);\r\n            }\r\n            function _formatErrorMessageXdr(xdr, message) {\r\n                if (xdr) {\r\n                    return \"XDomainRequest,Response:\" + _getResponseText(xdr) || \"\";\r\n                }\r\n                return message;\r\n            }\r\n            // Using function lookups for backward compatibility as the getNotifyMgr() did not exist until after v2.5.6\r\n            function _getNotifyMgr() {\r\n                var func = \"getNotifyMgr\";\r\n                if (_self.core[func]) {\r\n                    return _self.core[func]();\r\n                }\r\n                // using _self.core['_notificationManager'] for backward compatibility\r\n                return _self.core[\"_notificationManager\"];\r\n            }\r\n            function _notifySendRequest(sendRequest, isAsync) {\r\n                var manager = _getNotifyMgr();\r\n                if (manager && manager.eventsSendRequest) {\r\n                    try {\r\n                        manager.eventsSendRequest(sendRequest, isAsync);\r\n                    }\r\n                    catch (e) {\r\n                        _self.diagLog().throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.NotificationException, \"send request notification failed: \" + getExceptionName(e), { exception: dumpObj(e) });\r\n                    }\r\n                }\r\n            }\r\n            /**\r\n             * Validate UUID Format\r\n             * Specs taken from https://tools.ietf.org/html/rfc4122 and breeze repo\r\n             */\r\n            function _validateInstrumentationKey(config) {\r\n                var disableIKeyValidationFlag = isNullOrUndefined(config.disableInstrumentationKeyValidation) ? false : config.disableInstrumentationKeyValidation;\r\n                if (disableIKeyValidationFlag) {\r\n                    return true;\r\n                }\r\n                var UUID_Regex = \"^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$\";\r\n                var regexp = new RegExp(UUID_Regex);\r\n                return regexp.test(config.instrumentationKey);\r\n            }\r\n        });\r\n        return _this;\r\n    }\r\n    Sender.constructEnvelope = function (orig, iKey, logger, convertUndefined) {\r\n        var envelope;\r\n        if (iKey !== orig.iKey && !isNullOrUndefined(iKey)) {\r\n            envelope = __assign(__assign({}, orig), { iKey: iKey });\r\n        }\r\n        else {\r\n            envelope = orig;\r\n        }\r\n        var creator = EnvelopeTypeCreator[envelope.baseType] || EventEnvelopeCreator;\r\n        return creator(logger, envelope, convertUndefined);\r\n    };\r\n    /**\r\n     * Pause the sending (transmission) of events, this will cause all events to be batched only until the maximum limits are\r\n     * hit at which point new events are dropped. Will also cause events to NOT be sent during page unload, so if Session storage\r\n     * is disabled events will be lost.\r\n     * SessionStorage Limit is 2000 events, In-Memory (Array) Storage is 10,000 events (can be configured via the eventsLimitInMem).\r\n     */\r\n    Sender.prototype.pause = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Resume the sending (transmission) of events, this will restart the timer and any batched events will be sent using the normal\r\n     * send interval.\r\n     */\r\n    Sender.prototype.resume = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Flush the batched events immediately (not synchronously).\r\n     * Will not flush if the Sender has been paused.\r\n     */\r\n    Sender.prototype.flush = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Flush the batched events synchronously (if possible -- based on configuration).\r\n     * Will not flush if the Send has been paused.\r\n     */\r\n    Sender.prototype.onunloadFlush = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    Sender.prototype.teardown = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    Sender.prototype.initialize = function (config, core, extensions, pluginChain) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    Sender.prototype.processTelemetry = function (telemetryItem, itemCtx) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * xhr state changes\r\n     */\r\n    Sender.prototype._xhrReadyStateChange = function (xhr, payload, countOfItemsInPayload) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Immediately send buffered data\r\n     * @param async {boolean} - Indicates if the events should be sent asynchronously\r\n     * @param forcedSender {SenderFunction} - Indicates the forcedSender, undefined if not passed\r\n     */\r\n    Sender.prototype.triggerSend = function (async, forcedSender, sendReason) {\r\n        if (async === void 0) { async = true; }\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * error handler\r\n     */\r\n    Sender.prototype._onError = function (payload, message, event) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * partial success handler\r\n     */\r\n    Sender.prototype._onPartialSuccess = function (payload, results) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * success handler\r\n     */\r\n    Sender.prototype._onSuccess = function (payload, countOfItemsInPayload) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * xdr state changes\r\n     */\r\n    Sender.prototype._xdrOnLoad = function (xdr, payload) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Add header to request\r\n     * @param name   - Header name.\r\n     * @param value  - Header value.\r\n     */\r\n    Sender.prototype.addHeader = function (name, value) {\r\n        // @DynamicProtoStub - DO NOT add any code as this will be removed during packaging\r\n    };\r\n    return Sender;\r\n}(BaseTelemetryPlugin));\r\nexport { Sender };\r\n//# sourceMappingURL=Sender.js.map","import { getWindow, getDocument, getNavigator, isUndefined, isNullOrUndefined, attachEvent } from \"@microsoft/applicationinsights-core-js\";\r\nimport dynamicProto from \"@microsoft/dynamicproto-js\";\r\n/**\r\n * @description Monitors browser for offline events\r\n * @export default - Offline: Static instance of OfflineListener\r\n * @class OfflineListener\r\n */\r\nvar OfflineListener = /** @class */ (function () {\r\n    function OfflineListener() {\r\n        var _window = getWindow();\r\n        var _document = getDocument();\r\n        var isListening = false;\r\n        var _onlineStatus = true;\r\n        dynamicProto(OfflineListener, this, function (_self) {\r\n            try {\r\n                if (_window) {\r\n                    if (attachEvent(_window, \"online\", _setOnline)) {\r\n                        attachEvent(_window, \"offline\", _setOffline);\r\n                        isListening = true;\r\n                    }\r\n                }\r\n                if (_document) {\r\n                    // Also attach to the document.body or document\r\n                    var target = _document.body || _document;\r\n                    if (!isUndefined(target.ononline)) {\r\n                        target.ononline = _setOnline;\r\n                        target.onoffline = _setOffline;\r\n                        isListening = true;\r\n                    }\r\n                }\r\n                if (isListening) {\r\n                    // We are listening to events so lets set the current status rather than assuming we are online #1538\r\n                    var _navigator = getNavigator(); // Gets the window.navigator or workerNavigator depending on the global\r\n                    if (_navigator && !isNullOrUndefined(_navigator.onLine)) { // navigator.onLine is undefined in react-native\r\n                        _onlineStatus = _navigator.onLine;\r\n                    }\r\n                }\r\n            }\r\n            catch (e) {\r\n                // this makes react-native less angry\r\n                isListening = false;\r\n            }\r\n            _self.isListening = isListening;\r\n            _self.isOnline = function () {\r\n                var result = true;\r\n                var _navigator = getNavigator();\r\n                if (isListening) {\r\n                    result = _onlineStatus;\r\n                }\r\n                else if (_navigator && !isNullOrUndefined(_navigator.onLine)) { // navigator.onLine is undefined in react-native\r\n                    result = _navigator.onLine;\r\n                }\r\n                return result;\r\n            };\r\n            _self.isOffline = function () {\r\n                return !_self.isOnline();\r\n            };\r\n            function _setOnline() {\r\n                _onlineStatus = true;\r\n            }\r\n            function _setOffline() {\r\n                _onlineStatus = false;\r\n            }\r\n        });\r\n    }\r\n    OfflineListener.prototype.isOnline = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return false;\r\n    };\r\n    OfflineListener.prototype.isOffline = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return false;\r\n    };\r\n    OfflineListener.Offline = new OfflineListener;\r\n    return OfflineListener;\r\n}());\r\nexport { OfflineListener };\r\nexport var Offline = OfflineListener.Offline;\r\n//# sourceMappingURL=Offline.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\n// (Magic number) DJB algorithm can't work on shorter strings (results in poor distribution\r\nvar MIN_INPUT_LENGTH = 8;\r\nvar HashCodeScoreGenerator = /** @class */ (function () {\r\n    function HashCodeScoreGenerator() {\r\n    }\r\n    HashCodeScoreGenerator.prototype.getHashCodeScore = function (key) {\r\n        var score = this.getHashCode(key) / HashCodeScoreGenerator.INT_MAX_VALUE;\r\n        return score * 100;\r\n    };\r\n    HashCodeScoreGenerator.prototype.getHashCode = function (input) {\r\n        if (input === \"\") {\r\n            return 0;\r\n        }\r\n        while (input.length < MIN_INPUT_LENGTH) {\r\n            input = input.concat(input);\r\n        }\r\n        // 5381 is a magic number: http://stackoverflow.com/questions/10696223/reason-for-5381-number-in-djb-hash-function\r\n        var hash = 5381;\r\n        for (var i = 0; i < input.length; ++i) {\r\n            hash = ((hash << 5) + hash) + input.charCodeAt(i);\r\n            // 'hash' is of number type which means 53 bit integer (http://www.ecma-international.org/ecma-262/6.0/#sec-ecmascript-language-types-number-type)\r\n            // 'hash & hash' will keep it 32 bit integer - just to make it clearer what the result is.\r\n            hash = hash & hash;\r\n        }\r\n        return Math.abs(hash);\r\n    };\r\n    // We're using 32 bit math, hence max value is (2^31 - 1)\r\n    HashCodeScoreGenerator.INT_MAX_VALUE = 2147483647;\r\n    return HashCodeScoreGenerator;\r\n}());\r\nexport { HashCodeScoreGenerator };\r\n//# sourceMappingURL=HashCodeScoreGenerator.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { HashCodeScoreGenerator } from \"./HashCodeScoreGenerator\";\r\nimport { ContextTagKeys } from \"@microsoft/applicationinsights-common\";\r\nvar SamplingScoreGenerator = /** @class */ (function () {\r\n    function SamplingScoreGenerator() {\r\n        var _self = this;\r\n        var hashCodeGenerator = new HashCodeScoreGenerator();\r\n        var keys = new ContextTagKeys();\r\n        _self.getSamplingScore = function (item) {\r\n            var score = 0;\r\n            if (item.tags && item.tags[keys.userId]) { // search in tags first, then ext\r\n                score = hashCodeGenerator.getHashCodeScore(item.tags[keys.userId]);\r\n            }\r\n            else if (item.ext && item.ext.user && item.ext.user.id) {\r\n                score = hashCodeGenerator.getHashCodeScore(item.ext.user.id);\r\n            }\r\n            else if (item.tags && item.tags[keys.operationId]) { // search in tags first, then ext\r\n                score = hashCodeGenerator.getHashCodeScore(item.tags[keys.operationId]);\r\n            }\r\n            else if (item.ext && item.ext.telemetryTrace && item.ext.telemetryTrace.traceID) {\r\n                score = hashCodeGenerator.getHashCodeScore(item.ext.telemetryTrace.traceID);\r\n            }\r\n            else {\r\n                // tslint:disable-next-line:insecure-random\r\n                score = (Math.random() * 100);\r\n            }\r\n            return score;\r\n        };\r\n    }\r\n    return SamplingScoreGenerator;\r\n}());\r\nexport { SamplingScoreGenerator };\r\n//# sourceMappingURL=SamplingScoreGenerator.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { SamplingScoreGenerator } from \"./SamplingScoreGenerators/SamplingScoreGenerator\";\r\nimport { Metric } from \"@microsoft/applicationinsights-common\";\r\nimport { _InternalMessageId, LoggingSeverity, safeGetLogger } from \"@microsoft/applicationinsights-core-js\";\r\nvar Sample = /** @class */ (function () {\r\n    function Sample(sampleRate, logger) {\r\n        // We're using 32 bit math, hence max value is (2^31 - 1)\r\n        this.INT_MAX_VALUE = 2147483647;\r\n        var _logger = logger || safeGetLogger(null);\r\n        if (sampleRate > 100 || sampleRate < 0) {\r\n            _logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.SampleRateOutOfRange, \"Sampling rate is out of range (0..100). Sampling will be disabled, you may be sending too much data which may affect your AI service level.\", { samplingRate: sampleRate }, true);\r\n            sampleRate = 100;\r\n        }\r\n        this.sampleRate = sampleRate;\r\n        this.samplingScoreGenerator = new SamplingScoreGenerator();\r\n    }\r\n    /**\r\n     * Determines if an envelope is sampled in (i.e. will be sent) or not (i.e. will be dropped).\r\n     */\r\n    Sample.prototype.isSampledIn = function (envelope) {\r\n        var samplingPercentage = this.sampleRate; // 0 - 100\r\n        var isSampledIn = false;\r\n        if (samplingPercentage === null || samplingPercentage === undefined || samplingPercentage >= 100) {\r\n            return true;\r\n        }\r\n        else if (envelope.baseType === Metric.dataType) {\r\n            // exclude MetricData telemetry from sampling\r\n            return true;\r\n        }\r\n        isSampledIn = this.samplingScoreGenerator.getSamplingScore(envelope) < samplingPercentage;\r\n        return isSampledIn;\r\n    };\r\n    return Sample;\r\n}());\r\nexport { Sample };\r\n//# sourceMappingURL=Sample.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport dynamicProto from \"@microsoft/dynamicproto-js\";\r\nimport { utlCanUseLocalStorage, utlGetLocalStorage, utlSetLocalStorage } from \"@microsoft/applicationinsights-common\";\r\nimport { _InternalMessageId, LoggingSeverity, safeGetCookieMgr, isFunction, newId, dumpObj, getExceptionName, dateNow, safeGetLogger } from \"@microsoft/applicationinsights-core-js\";\r\nvar cookieNameConst = \"ai_session\";\r\nvar Session = /** @class */ (function () {\r\n    function Session() {\r\n    }\r\n    return Session;\r\n}());\r\nexport { Session };\r\nvar _SessionManager = /** @class */ (function () {\r\n    function _SessionManager(config, core) {\r\n        var self = this;\r\n        var _storageNamePrefix;\r\n        var _cookieUpdatedTimestamp;\r\n        var _logger = safeGetLogger(core);\r\n        var _cookieManager = safeGetCookieMgr(core);\r\n        dynamicProto(_SessionManager, self, function (_self) {\r\n            if (!config) {\r\n                config = {};\r\n            }\r\n            if (!isFunction(config.sessionExpirationMs)) {\r\n                config.sessionExpirationMs = function () { return _SessionManager.acquisitionSpan; };\r\n            }\r\n            if (!isFunction(config.sessionRenewalMs)) {\r\n                config.sessionRenewalMs = function () { return _SessionManager.renewalSpan; };\r\n            }\r\n            _self.config = config;\r\n            // sessionCookiePostfix takes the preference if it is configured, otherwise takes namePrefix if configured.\r\n            var sessionCookiePostfix = (_self.config.sessionCookiePostfix && _self.config.sessionCookiePostfix()) ?\r\n                _self.config.sessionCookiePostfix() :\r\n                ((_self.config.namePrefix && _self.config.namePrefix()) ? _self.config.namePrefix() : \"\");\r\n            _storageNamePrefix = function () { return cookieNameConst + sessionCookiePostfix; };\r\n            _self.automaticSession = new Session();\r\n            _self.update = function () {\r\n                // Always using Date getTime() as there is a bug in older IE instances that causes the performance timings to have the hi-bit set eg 0x800000000 causing\r\n                // the number to be incorrect.\r\n                var nowMs = dateNow();\r\n                var isExpired = false;\r\n                var session = _self.automaticSession;\r\n                if (!session.id) {\r\n                    isExpired = !_initializeAutomaticSession(session, nowMs);\r\n                }\r\n                var sessionExpirationMs = _self.config.sessionExpirationMs();\r\n                if (!isExpired && sessionExpirationMs > 0) {\r\n                    var sessionRenewalMs = _self.config.sessionRenewalMs();\r\n                    var timeSinceAcqMs = nowMs - session.acquisitionDate;\r\n                    var timeSinceRenewalMs = nowMs - session.renewalDate;\r\n                    isExpired = timeSinceAcqMs < 0 || timeSinceRenewalMs < 0; // expired if the acquisition or last renewal are in the future\r\n                    isExpired = isExpired || timeSinceAcqMs > sessionExpirationMs; // expired if the time since acquisition is more than session Expiration\r\n                    isExpired = isExpired || timeSinceRenewalMs > sessionRenewalMs; // expired if the time since last renewal is more than renewal period\r\n                }\r\n                // renew if acquisitionSpan or renewalSpan has elapsed\r\n                if (isExpired) {\r\n                    // update automaticSession so session state has correct id\r\n                    _renew(nowMs);\r\n                }\r\n                else {\r\n                    // do not update the cookie more often than cookieUpdateInterval\r\n                    if (!_cookieUpdatedTimestamp || nowMs - _cookieUpdatedTimestamp > _SessionManager.cookieUpdateInterval) {\r\n                        _setCookie(session, nowMs);\r\n                    }\r\n                }\r\n            };\r\n            /**\r\n             *  Record the current state of the automatic session and store it in our cookie string format\r\n             *  into the browser's local storage. This is used to restore the session data when the cookie\r\n             *  expires.\r\n             */\r\n            _self.backup = function () {\r\n                var session = _self.automaticSession;\r\n                _setStorage(session.id, session.acquisitionDate, session.renewalDate);\r\n            };\r\n            /**\r\n             * Use config.namePrefix + ai_session cookie data or local storage data (when the cookie is unavailable) to\r\n             * initialize the automatic session.\r\n             * @returns true if values set otherwise false\r\n             */\r\n            function _initializeAutomaticSession(session, now) {\r\n                var isValid = false;\r\n                var cookieValue = _cookieManager.get(_storageNamePrefix());\r\n                if (cookieValue && isFunction(cookieValue.split)) {\r\n                    isValid = _initializeAutomaticSessionWithData(session, cookieValue);\r\n                }\r\n                else {\r\n                    // There's no cookie, but we might have session data in local storage\r\n                    // This can happen if the session expired or the user actively deleted the cookie\r\n                    // We only want to recover data if the cookie is missing from expiry. We should respect the user's wishes if the cookie was deleted actively.\r\n                    // The User class handles this for us and deletes our local storage object if the persistent user cookie was removed.\r\n                    var storageValue = utlGetLocalStorage(_logger, _storageNamePrefix());\r\n                    if (storageValue) {\r\n                        isValid = _initializeAutomaticSessionWithData(session, storageValue);\r\n                    }\r\n                }\r\n                return isValid || !!session.id;\r\n            }\r\n            /**\r\n             * Extract id, acquisitionDate, and renewalDate from an ai_session payload string and\r\n             * use this data to initialize automaticSession.\r\n             *\r\n             * @param {string} sessionData - The string stored in an ai_session cookie or local storage backup\r\n             * @returns true if values set otherwise false\r\n             */\r\n            function _initializeAutomaticSessionWithData(session, sessionData) {\r\n                var isValid = false;\r\n                var sessionReset = \", session will be reset\";\r\n                var tokens = sessionData.split(\"|\");\r\n                if (tokens.length >= 2) {\r\n                    try {\r\n                        var acqMs = +tokens[1] || 0;\r\n                        var renewalMs = +tokens[2] || 0;\r\n                        if (isNaN(acqMs) || acqMs <= 0) {\r\n                            _logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.SessionRenewalDateIsZero, \"AI session acquisition date is 0\" + sessionReset);\r\n                        }\r\n                        else if (isNaN(renewalMs) || renewalMs <= 0) {\r\n                            _logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.SessionRenewalDateIsZero, \"AI session renewal date is 0\" + sessionReset);\r\n                        }\r\n                        else if (tokens[0]) {\r\n                            // Everything looks valid so set the values\r\n                            session.id = tokens[0];\r\n                            session.acquisitionDate = acqMs;\r\n                            session.renewalDate = renewalMs;\r\n                            isValid = true;\r\n                        }\r\n                    }\r\n                    catch (e) {\r\n                        _logger.throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.ErrorParsingAISessionCookie, \"Error parsing ai_session value [\" + (sessionData || \"\") + \"]\" + sessionReset + \" - \" + getExceptionName(e), { exception: dumpObj(e) });\r\n                    }\r\n                }\r\n                return isValid;\r\n            }\r\n            function _renew(nowMs) {\r\n                var theConfig = (_self.config || {});\r\n                var getNewId = (theConfig.getNewId ? theConfig.getNewId() : null) || newId;\r\n                _self.automaticSession.id = getNewId(theConfig.idLength ? theConfig.idLength() : 22);\r\n                _self.automaticSession.acquisitionDate = nowMs;\r\n                _setCookie(_self.automaticSession, nowMs);\r\n                // If this browser does not support local storage, fire an internal log to keep track of it at this point\r\n                if (!utlCanUseLocalStorage()) {\r\n                    _logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.BrowserDoesNotSupportLocalStorage, \"Browser does not support local storage. Session durations will be inaccurate.\");\r\n                }\r\n            }\r\n            function _setCookie(session, nowMs) {\r\n                var acq = session.acquisitionDate;\r\n                session.renewalDate = nowMs;\r\n                var config = _self.config;\r\n                var renewalPeriodMs = config.sessionRenewalMs();\r\n                // Set cookie to expire after the session expiry time passes or the session renewal deadline, whichever is sooner\r\n                // Expiring the cookie will cause the session to expire even if the user isn't on the page\r\n                var acqTimeLeftMs = (acq + config.sessionExpirationMs()) - nowMs;\r\n                var cookie = [session.id, acq, nowMs];\r\n                var maxAgeSec = 0;\r\n                if (acqTimeLeftMs < renewalPeriodMs) {\r\n                    maxAgeSec = acqTimeLeftMs / 1000;\r\n                }\r\n                else {\r\n                    maxAgeSec = renewalPeriodMs / 1000;\r\n                }\r\n                var cookieDomain = config.cookieDomain ? config.cookieDomain() : null;\r\n                // if sessionExpirationMs is set to 0, it means the expiry is set to 0 for this session cookie\r\n                // A cookie with 0 expiry in the session cookie will never expire for that browser session.  If the browser is closed the cookie expires.\r\n                // Depending on the browser, another instance does not inherit this cookie, however, another tab will\r\n                _cookieManager.set(_storageNamePrefix(), cookie.join(\"|\"), config.sessionExpirationMs() > 0 ? maxAgeSec : null, cookieDomain);\r\n                _cookieUpdatedTimestamp = nowMs;\r\n            }\r\n            function _setStorage(guid, acq, renewal) {\r\n                // Keep data in local storage to retain the last session id, allowing us to cleanly end the session when it expires\r\n                // Browsers that don't support local storage won't be able to end sessions cleanly from the client\r\n                // The server will notice this and end the sessions itself, with loss of accurate session duration\r\n                utlSetLocalStorage(_logger, _storageNamePrefix(), [guid, acq, renewal].join(\"|\"));\r\n            }\r\n        });\r\n    }\r\n    _SessionManager.prototype.update = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     *  Record the current state of the automatic session and store it in our cookie string format\r\n     *  into the browser's local storage. This is used to restore the session data when the cookie\r\n     *  expires.\r\n     */\r\n    _SessionManager.prototype.backup = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    _SessionManager.acquisitionSpan = 86400000; // 24 hours in ms\r\n    _SessionManager.renewalSpan = 1800000; // 30 minutes in ms\r\n    _SessionManager.cookieUpdateInterval = 60000; // 1 minute in ms\r\n    return _SessionManager;\r\n}());\r\nexport { _SessionManager };\r\n//# sourceMappingURL=Session.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nvar Application = /** @class */ (function () {\r\n    function Application() {\r\n    }\r\n    return Application;\r\n}());\r\nexport { Application };\r\n//# sourceMappingURL=Application.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nvar Device = /** @class */ (function () {\r\n    /**\r\n     * Constructs a new instance of the Device class\r\n     */\r\n    function Device() {\r\n        // don't attempt to fingerprint browsers\r\n        this.id = \"browser\";\r\n        // Device type is a dimension in our data platform\r\n        // Setting it to 'Browser' allows to separate client and server dependencies/exceptions\r\n        this.deviceClass = \"Browser\";\r\n    }\r\n    return Device;\r\n}());\r\nexport { Device };\r\n//# sourceMappingURL=Device.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nvar Version = \"2.7.1\";\r\nvar Internal = /** @class */ (function () {\r\n    /**\r\n     * Constructs a new instance of the internal telemetry data class.\r\n     */\r\n    function Internal(config) {\r\n        this.sdkVersion = (config.sdkExtension && config.sdkExtension() ? config.sdkExtension() + \"_\" : \"\") + \"javascript:\" + Version;\r\n    }\r\n    return Internal;\r\n}());\r\nexport { Internal };\r\n//# sourceMappingURL=Internal.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport dynamicProto from \"@microsoft/dynamicproto-js\";\r\nimport { utlRemoveStorage } from \"@microsoft/applicationinsights-common\";\r\nimport { _InternalMessageId, LoggingSeverity, safeGetCookieMgr, safeGetLogger, newId, toISOString } from \"@microsoft/applicationinsights-core-js\";\r\nfunction _validateUserInput(id) {\r\n    // Validate:\r\n    // 1. Id is a non-empty string.\r\n    // 2. It does not contain special characters for cookies.\r\n    if (typeof id !== \"string\" ||\r\n        !id ||\r\n        id.match(/,|;|=| |\\|/)) {\r\n        return false;\r\n    }\r\n    return true;\r\n}\r\nvar User = /** @class */ (function () {\r\n    function User(config, core) {\r\n        /**\r\n         * A flag indicating whether this represents a new user\r\n         */\r\n        this.isNewUser = false;\r\n        /**\r\n         * A flag indicating whether the user cookie has been set\r\n         */\r\n        this.isUserCookieSet = false;\r\n        var _logger = safeGetLogger(core);\r\n        var _cookieManager = safeGetCookieMgr(core);\r\n        var _storageNamePrefix;\r\n        dynamicProto(User, this, function (_self) {\r\n            _self.config = config;\r\n            var userCookiePostfix = (_self.config.userCookiePostfix && _self.config.userCookiePostfix()) ? _self.config.userCookiePostfix() : \"\";\r\n            _storageNamePrefix = function () { return User.userCookieName + userCookiePostfix; };\r\n            // get userId or create new one if none exists\r\n            var cookie = _cookieManager.get(_storageNamePrefix());\r\n            if (cookie) {\r\n                _self.isNewUser = false;\r\n                var params = cookie.split(User.cookieSeparator);\r\n                if (params.length > 0) {\r\n                    _self.id = params[0];\r\n                    // we already have a cookie\r\n                    _self.isUserCookieSet = !!_self.id;\r\n                }\r\n            }\r\n            function _generateNewId() {\r\n                var theConfig = (config || {});\r\n                var getNewId = (theConfig.getNewId ? theConfig.getNewId() : null) || newId;\r\n                var id = getNewId(theConfig.idLength ? config.idLength() : 22);\r\n                return id;\r\n            }\r\n            function _generateNewCookie(userId) {\r\n                var acqStr = toISOString(new Date());\r\n                _self.accountAcquisitionDate = acqStr;\r\n                _self.isNewUser = true;\r\n                var newCookie = [userId, acqStr];\r\n                return newCookie;\r\n            }\r\n            function _setUserCookie(cookie) {\r\n                // without expiration, cookies expire at the end of the session\r\n                // set it to 365 days from now\r\n                // 365 * 24 * 60 * 60 = 31536000\r\n                var oneYear = 31536000;\r\n                _self.isUserCookieSet = _cookieManager.set(_storageNamePrefix(), cookie, oneYear);\r\n            }\r\n            if (!_self.id) {\r\n                _self.id = _generateNewId();\r\n                var newCookie = _generateNewCookie(_self.id);\r\n                _setUserCookie(newCookie.join(User.cookieSeparator));\r\n                // If we have an config.namePrefix() + ai_session in local storage this means the user actively removed our cookies.\r\n                // We should respect their wishes and clear ourselves from local storage\r\n                var name_1 = config.namePrefix && config.namePrefix() ? config.namePrefix() + \"ai_session\" : \"ai_session\";\r\n                utlRemoveStorage(_logger, name_1);\r\n            }\r\n            // We still take the account id from the ctor param for backward compatibility.\r\n            // But if the the customer set the accountId through the newer setAuthenticatedUserContext API, we will override it.\r\n            _self.accountId = config.accountId ? config.accountId() : undefined;\r\n            // Get the auth user id and account id from the cookie if exists\r\n            // Cookie is in the pattern: <authenticatedId>|<accountId>\r\n            var authCookie = _cookieManager.get(User.authUserCookieName);\r\n            if (authCookie) {\r\n                authCookie = decodeURI(authCookie);\r\n                var authCookieString = authCookie.split(User.cookieSeparator);\r\n                if (authCookieString[0]) {\r\n                    _self.authenticatedId = authCookieString[0];\r\n                }\r\n                if (authCookieString.length > 1 && authCookieString[1]) {\r\n                    _self.accountId = authCookieString[1];\r\n                }\r\n            }\r\n            _self.setAuthenticatedUserContext = function (authenticatedUserId, accountId, storeInCookie) {\r\n                if (storeInCookie === void 0) { storeInCookie = false; }\r\n                // Validate inputs to ensure no cookie control characters.\r\n                var isInvalidInput = !_validateUserInput(authenticatedUserId) || (accountId && !_validateUserInput(accountId));\r\n                if (isInvalidInput) {\r\n                    _logger.throwInternal(LoggingSeverity.WARNING, _InternalMessageId.SetAuthContextFailedAccountName, \"Setting auth user context failed. \" +\r\n                        \"User auth/account id should be of type string, and not contain commas, semi-colons, equal signs, spaces, or vertical-bars.\", true);\r\n                    return;\r\n                }\r\n                // Create cookie string.\r\n                _self.authenticatedId = authenticatedUserId;\r\n                var authCookie = _self.authenticatedId;\r\n                if (accountId) {\r\n                    _self.accountId = accountId;\r\n                    authCookie = [_self.authenticatedId, _self.accountId].join(User.cookieSeparator);\r\n                }\r\n                if (storeInCookie) {\r\n                    // Set the cookie. No expiration date because this is a session cookie (expires when browser closed).\r\n                    // Encoding the cookie to handle unexpected unicode characters.\r\n                    _cookieManager.set(User.authUserCookieName, encodeURI(authCookie));\r\n                }\r\n            };\r\n            /**\r\n             * Clears the authenticated user id and the account id from the user context.\r\n             * @returns {}\r\n             */\r\n            _self.clearAuthenticatedUserContext = function () {\r\n                _self.authenticatedId = null;\r\n                _self.accountId = null;\r\n                _cookieManager.del(User.authUserCookieName);\r\n            };\r\n            _self.update = function (userId) {\r\n                // Optimizations to avoid setting and processing the cookie when not needed\r\n                if (_self.id !== userId || !_self.isUserCookieSet) {\r\n                    var user_id = userId ? userId : _generateNewId();\r\n                    var user_cookie = _generateNewCookie(user_id);\r\n                    _setUserCookie(user_cookie.join(User.cookieSeparator));\r\n                }\r\n            };\r\n        });\r\n    }\r\n    /**\r\n     * Sets the authenticated user id and the account id in this session.\r\n     *\r\n     * @param authenticatedUserId {string} - The authenticated user id. A unique and persistent string that represents each authenticated user in the service.\r\n     * @param accountId {string} - An optional string to represent the account associated with the authenticated user.\r\n     */\r\n    User.prototype.setAuthenticatedUserContext = function (authenticatedUserId, accountId, storeInCookie) {\r\n        if (storeInCookie === void 0) { storeInCookie = false; }\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Clears the authenticated user id and the account id from the user context.\r\n     * @returns {}\r\n     */\r\n    User.prototype.clearAuthenticatedUserContext = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Update or create the user cookie if cookies where previously disabled or the new userId does not match the existing value.\r\n     * If you pass nothing a new random user id will be created.\r\n     * @param userId - Specific either the current (via appInsights.context.user.id) or new id that you want to set\r\n     */\r\n    User.prototype.update = function (userId) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    User.cookieSeparator = \"|\";\r\n    User.userCookieName = \"ai_user\";\r\n    User.authUserCookieName = \"ai_authUser\";\r\n    return User;\r\n}());\r\nexport { User };\r\n//# sourceMappingURL=User.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nvar Location = /** @class */ (function () {\r\n    function Location() {\r\n    }\r\n    return Location;\r\n}());\r\nexport { Location };\r\n//# sourceMappingURL=Location.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { dataSanitizeString } from \"@microsoft/applicationinsights-common\";\r\nimport { generateW3CId, getLocation } from \"@microsoft/applicationinsights-core-js\";\r\nvar TelemetryTrace = /** @class */ (function () {\r\n    function TelemetryTrace(id, parentId, name, logger) {\r\n        var _self = this;\r\n        _self.traceID = id || generateW3CId();\r\n        _self.parentID = parentId;\r\n        _self.name = name;\r\n        var location = getLocation();\r\n        if (!name && location && location.pathname) {\r\n            _self.name = location.pathname;\r\n        }\r\n        _self.name = dataSanitizeString(logger, _self.name);\r\n    }\r\n    return TelemetryTrace;\r\n}());\r\nexport { TelemetryTrace };\r\n//# sourceMappingURL=TelemetryTrace.js.map","/**\r\n * TelemetryContext.ts\r\n * @copyright Microsoft 2018\r\n */\r\nimport dynamicProto from \"@microsoft/dynamicproto-js\";\r\nimport { isString, objKeys, hasWindow, _InternalLogMessage, setValue, getSetValue } from \"@microsoft/applicationinsights-core-js\";\r\nimport { Session, _SessionManager } from \"./Context/Session\";\r\nimport { Extensions, CtxTagKeys, PageView } from \"@microsoft/applicationinsights-common\";\r\nimport { Application } from \"./Context/Application\";\r\nimport { Device } from \"./Context/Device\";\r\nimport { Internal } from \"./Context/Internal\";\r\nimport { User } from \"./Context/User\";\r\nimport { Location } from \"./Context/Location\";\r\nimport { TelemetryTrace } from \"./Context/TelemetryTrace\";\r\nvar strExt = \"ext\";\r\nvar strTags = \"tags\";\r\nfunction _removeEmpty(target, name) {\r\n    if (target && target[name] && objKeys(target[name]).length === 0) {\r\n        delete target[name];\r\n    }\r\n}\r\nvar TelemetryContext = /** @class */ (function () {\r\n    function TelemetryContext(core, defaultConfig) {\r\n        var _this = this;\r\n        var logger = core.logger;\r\n        this.appId = function () { return null; };\r\n        this.getSessionId = function () { return null; };\r\n        dynamicProto(TelemetryContext, this, function (_self) {\r\n            _self.application = new Application();\r\n            _self.internal = new Internal(defaultConfig);\r\n            if (hasWindow()) {\r\n                _self.sessionManager = new _SessionManager(defaultConfig, core);\r\n                _self.device = new Device();\r\n                _self.location = new Location();\r\n                _self.user = new User(defaultConfig, core);\r\n                _self.telemetryTrace = new TelemetryTrace(undefined, undefined, undefined, logger);\r\n                _self.session = new Session();\r\n            }\r\n            _self.getSessionId = function () {\r\n                var session = _self.session;\r\n                var sesId = null;\r\n                // If customer set session info, apply their context; otherwise apply context automatically generated\r\n                if (session && isString(session.id)) {\r\n                    sesId = session.id;\r\n                }\r\n                else {\r\n                    // Gets the automatic session if it exists or an empty object\r\n                    var autoSession = (_self.sessionManager || {}).automaticSession;\r\n                    sesId = autoSession && isString(autoSession.id) ? autoSession.id : null;\r\n                }\r\n                return sesId;\r\n            };\r\n            _self.applySessionContext = function (evt, itemCtx) {\r\n                setValue(getSetValue(evt.ext, Extensions.AppExt), \"sesId\", _self.getSessionId(), isString);\r\n            };\r\n            _self.applyOperatingSystemContxt = function (evt, itemCtx) {\r\n                setValue(evt.ext, Extensions.OSExt, _self.os);\r\n            };\r\n            _self.applyApplicationContext = function (evt, itemCtx) {\r\n                var application = _self.application;\r\n                if (application) {\r\n                    // evt.ext.app\r\n                    var tags = getSetValue(evt, strTags);\r\n                    setValue(tags, CtxTagKeys.applicationVersion, application.ver, isString);\r\n                    setValue(tags, CtxTagKeys.applicationBuild, application.build, isString);\r\n                }\r\n            };\r\n            _self.applyDeviceContext = function (evt, itemCtx) {\r\n                var device = _self.device;\r\n                if (device) {\r\n                    // evt.ext.device\r\n                    var extDevice = getSetValue(getSetValue(evt, strExt), Extensions.DeviceExt);\r\n                    setValue(extDevice, \"localId\", device.id, isString);\r\n                    setValue(extDevice, \"ip\", device.ip, isString);\r\n                    setValue(extDevice, \"model\", device.model, isString);\r\n                    setValue(extDevice, \"deviceClass\", device.deviceClass, isString);\r\n                }\r\n            };\r\n            _self.applyInternalContext = function (evt, itemCtx) {\r\n                var internal = _self.internal;\r\n                if (internal) {\r\n                    var tags = getSetValue(evt, strTags);\r\n                    setValue(tags, CtxTagKeys.internalAgentVersion, internal.agentVersion, isString); // not mapped in CS 4.0\r\n                    setValue(tags, CtxTagKeys.internalSdkVersion, internal.sdkVersion, isString);\r\n                    if (evt.baseType === _InternalLogMessage.dataType || evt.baseType === PageView.dataType) {\r\n                        setValue(tags, CtxTagKeys.internalSnippet, internal.snippetVer, isString);\r\n                        setValue(tags, CtxTagKeys.internalSdkSrc, internal.sdkSrc, isString);\r\n                    }\r\n                }\r\n            };\r\n            _self.applyLocationContext = function (evt, itemCtx) {\r\n                var location = _this.location;\r\n                if (location) {\r\n                    setValue(getSetValue(evt, strTags, []), CtxTagKeys.locationIp, location.ip, isString);\r\n                }\r\n            };\r\n            _self.applyOperationContext = function (evt, itemCtx) {\r\n                var telemetryTrace = _self.telemetryTrace;\r\n                if (telemetryTrace) {\r\n                    var extTrace = getSetValue(getSetValue(evt, strExt), Extensions.TraceExt, { traceID: undefined, parentID: undefined });\r\n                    setValue(extTrace, \"traceID\", telemetryTrace.traceID, isString);\r\n                    setValue(extTrace, \"name\", telemetryTrace.name, isString);\r\n                    setValue(extTrace, \"parentID\", telemetryTrace.parentID, isString);\r\n                }\r\n            };\r\n            _self.applyWebContext = function (evt, itemCtx) {\r\n                var web = _this.web;\r\n                if (web) {\r\n                    setValue(getSetValue(evt, strExt), Extensions.WebExt, web);\r\n                }\r\n            };\r\n            _self.applyUserContext = function (evt, itemCtx) {\r\n                var user = _self.user;\r\n                if (user) {\r\n                    var tags = getSetValue(evt, strTags, []);\r\n                    // stays in tags\r\n                    setValue(tags, CtxTagKeys.userAccountId, user.accountId, isString);\r\n                    // CS 4.0\r\n                    var extUser = getSetValue(getSetValue(evt, strExt), Extensions.UserExt);\r\n                    setValue(extUser, \"id\", user.id, isString);\r\n                    setValue(extUser, \"authId\", user.authenticatedId, isString);\r\n                }\r\n            };\r\n            _self.cleanUp = function (evt, itemCtx) {\r\n                var ext = evt.ext;\r\n                if (ext) {\r\n                    _removeEmpty(ext, Extensions.DeviceExt);\r\n                    _removeEmpty(ext, Extensions.UserExt);\r\n                    _removeEmpty(ext, Extensions.WebExt);\r\n                    _removeEmpty(ext, Extensions.OSExt);\r\n                    _removeEmpty(ext, Extensions.AppExt);\r\n                    _removeEmpty(ext, Extensions.TraceExt);\r\n                }\r\n            };\r\n        });\r\n    }\r\n    TelemetryContext.prototype.applySessionContext = function (evt, itemCtx) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    TelemetryContext.prototype.applyOperatingSystemContxt = function (event, itemCtx) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    TelemetryContext.prototype.applyApplicationContext = function (event, itemCtx) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    TelemetryContext.prototype.applyDeviceContext = function (event, itemCtx) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    TelemetryContext.prototype.applyInternalContext = function (event, itemCtx) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    TelemetryContext.prototype.applyLocationContext = function (event, itemCtx) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    TelemetryContext.prototype.applyOperationContext = function (event, itemCtx) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    TelemetryContext.prototype.applyWebContext = function (event, itemCtx) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    TelemetryContext.prototype.applyUserContext = function (event, itemCtx) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    TelemetryContext.prototype.cleanUp = function (event, itemCtx) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    return TelemetryContext;\r\n}());\r\nexport { TelemetryContext };\r\n//# sourceMappingURL=TelemetryContext.js.map","/**\r\n * PropertiesPlugin.ts\r\n * @copyright Microsoft 2018\r\n */\r\nimport { __extends } from \"tslib\";\r\nimport dynamicProto from \"@microsoft/dynamicproto-js\";\r\nimport { BaseTelemetryPlugin, isNullOrUndefined, _InternalLogMessage, LoggingSeverity, _InternalMessageId, getNavigator, objForEachKey, getSetValue } from \"@microsoft/applicationinsights-core-js\";\r\nimport { TelemetryContext } from \"./TelemetryContext\";\r\nimport { PageView, BreezeChannelIdentifier, PropertiesPluginIdentifier, getExtensionByName } from \"@microsoft/applicationinsights-common\";\r\nvar PropertiesPlugin = /** @class */ (function (_super) {\r\n    __extends(PropertiesPlugin, _super);\r\n    function PropertiesPlugin() {\r\n        var _this = _super.call(this) || this;\r\n        _this.priority = 110;\r\n        _this.identifier = PropertiesPluginIdentifier;\r\n        var _breezeChannel; // optional. If exists, grab appId from it\r\n        var _extensionConfig;\r\n        dynamicProto(PropertiesPlugin, _this, function (_self, _base) {\r\n            _self.initialize = function (config, core, extensions, pluginChain) {\r\n                _base.initialize(config, core, extensions, pluginChain);\r\n                var ctx = _self._getTelCtx();\r\n                var identifier = _self.identifier;\r\n                var defaultConfig = PropertiesPlugin.getDefaultConfig();\r\n                _extensionConfig = _extensionConfig || {};\r\n                objForEachKey(defaultConfig, function (field, value) {\r\n                    _extensionConfig[field] = function () { return ctx.getConfig(identifier, field, value()); };\r\n                });\r\n                _self.context = new TelemetryContext(core, _extensionConfig);\r\n                _breezeChannel = getExtensionByName(extensions, BreezeChannelIdentifier);\r\n                _self.context.appId = function () { return _breezeChannel ? _breezeChannel[\"_appId\"] : null; };\r\n                // Test hook to allow accessing the internal values -- explicitly not defined as an available property on the class\r\n                _self[\"_extConfig\"] = _extensionConfig;\r\n            };\r\n            /**\r\n             * Add Part A fields to the event\r\n             * @param event The event that needs to be processed\r\n             */\r\n            _self.processTelemetry = function (event, itemCtx) {\r\n                if (isNullOrUndefined(event)) {\r\n                    // TODO(barustum): throw an internal event once we have support for internal logging\r\n                }\r\n                else {\r\n                    itemCtx = _self._getTelCtx(itemCtx);\r\n                    // If the envelope is PageView, reset the internal message count so that we can send internal telemetry for the new page.\r\n                    if (event.name === PageView.envelopeType) {\r\n                        itemCtx.diagLog().resetInternalMessageCount();\r\n                    }\r\n                    var theContext = (_self.context || {});\r\n                    if (theContext.session) {\r\n                        // If customer did not provide custom session id update the session manager\r\n                        if (typeof _self.context.session.id !== \"string\" && theContext.sessionManager) {\r\n                            theContext.sessionManager.update();\r\n                        }\r\n                    }\r\n                    var userCtx = theContext.user;\r\n                    if (userCtx && !userCtx.isUserCookieSet) {\r\n                        userCtx.update(theContext.user.id);\r\n                    }\r\n                    _processTelemetryInternal(event, itemCtx);\r\n                    if (userCtx && userCtx.isNewUser) {\r\n                        userCtx.isNewUser = false;\r\n                        var message = new _InternalLogMessage(_InternalMessageId.SendBrowserInfoOnUserInit, ((getNavigator() || {}).userAgent || \"\"));\r\n                        itemCtx.diagLog().logInternalMessage(LoggingSeverity.CRITICAL, message);\r\n                    }\r\n                    _self.processNext(event, itemCtx);\r\n                }\r\n            };\r\n            function _processTelemetryInternal(evt, itemCtx) {\r\n                // Set Part A fields\r\n                getSetValue(evt, \"tags\", []);\r\n                getSetValue(evt, \"ext\", {});\r\n                var ctx = _self.context;\r\n                ctx.applySessionContext(evt, itemCtx);\r\n                ctx.applyApplicationContext(evt, itemCtx);\r\n                ctx.applyDeviceContext(evt, itemCtx);\r\n                ctx.applyOperationContext(evt, itemCtx);\r\n                ctx.applyUserContext(evt, itemCtx);\r\n                ctx.applyOperatingSystemContxt(evt, itemCtx);\r\n                ctx.applyWebContext(evt, itemCtx);\r\n                ctx.applyLocationContext(evt, itemCtx); // legacy tags\r\n                ctx.applyInternalContext(evt, itemCtx); // legacy tags\r\n                ctx.cleanUp(evt, itemCtx);\r\n            }\r\n        });\r\n        return _this;\r\n    }\r\n    PropertiesPlugin.getDefaultConfig = function () {\r\n        var defaultConfig = {\r\n            instrumentationKey: function () { return undefined; },\r\n            accountId: function () { return null; },\r\n            sessionRenewalMs: function () { return 30 * 60 * 1000; },\r\n            samplingPercentage: function () { return 100; },\r\n            sessionExpirationMs: function () { return 24 * 60 * 60 * 1000; },\r\n            cookieDomain: function () { return null; },\r\n            sdkExtension: function () { return null; },\r\n            isBrowserLinkTrackingEnabled: function () { return false; },\r\n            appId: function () { return null; },\r\n            getSessionId: function () { return null; },\r\n            namePrefix: function () { return undefined; },\r\n            sessionCookiePostfix: function () { return undefined; },\r\n            userCookiePostfix: function () { return undefined; },\r\n            idLength: function () { return 22; },\r\n            getNewId: function () { return null; }\r\n        };\r\n        return defaultConfig;\r\n    };\r\n    PropertiesPlugin.prototype.initialize = function (config, core, extensions, pluginChain) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Add Part A fields to the event\r\n     * @param event The event that needs to be processed\r\n     */\r\n    PropertiesPlugin.prototype.processTelemetry = function (event, itemCtx) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    return PropertiesPlugin;\r\n}(BaseTelemetryPlugin));\r\nexport default PropertiesPlugin;\r\n//# sourceMappingURL=PropertiesPlugin.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { strShimFunction, strShimPrototype } from \"@microsoft/applicationinsights-shims\";\r\nimport { hasOwnProperty } from \"./HelperFuncs\";\r\nvar aiInstrumentHooks = \"_aiHooks\";\r\nvar cbNames = [\r\n    \"req\", \"rsp\", \"hkErr\", \"fnErr\"\r\n];\r\n/**\r\n * Constant string defined to support minimization\r\n * @ignore\r\n */\r\nvar str__Proto = \"__proto__\";\r\n/**\r\n * Constant string defined to support minimization\r\n * @ignore\r\n */\r\nvar strConstructor = \"constructor\";\r\n/** @ignore */\r\nfunction _arrLoop(arr, fn) {\r\n    if (arr) {\r\n        for (var lp = 0; lp < arr.length; lp++) {\r\n            if (fn(arr[lp], lp)) {\r\n                break;\r\n            }\r\n        }\r\n    }\r\n}\r\n/** @ignore */\r\nfunction _doCallbacks(hooks, callDetails, cbArgs, hookCtx, type) {\r\n    if (type >= 0 /* Request */ && type <= 2 /* HookError */) {\r\n        _arrLoop(hooks, function (hook, idx) {\r\n            var cbks = hook.cbks;\r\n            var cb = cbks[cbNames[type]];\r\n            if (cb) {\r\n                // Set the specific hook context implementation using a lazy creation pattern\r\n                callDetails.ctx = function () {\r\n                    var ctx = hookCtx[idx] = (hookCtx[idx] || {});\r\n                    return ctx;\r\n                };\r\n                try {\r\n                    cb.apply(callDetails.inst, cbArgs);\r\n                }\r\n                catch (err) {\r\n                    var orgEx = callDetails.err;\r\n                    try {\r\n                        // Report Hook error via the callback\r\n                        var hookErrorCb = cbks[cbNames[2 /* HookError */]];\r\n                        if (hookErrorCb) {\r\n                            callDetails.err = err;\r\n                            hookErrorCb.apply(callDetails.inst, cbArgs);\r\n                        }\r\n                    }\r\n                    catch (e) {\r\n                        // Not much we can do here -- swallowing the exception to avoid crashing the hosting app\r\n                    }\r\n                    finally {\r\n                        // restore the original exception (if any)\r\n                        callDetails.err = orgEx;\r\n                    }\r\n                }\r\n            }\r\n        });\r\n    }\r\n}\r\n/** @ignore */\r\nfunction _createFunctionHook(aiHook) {\r\n    // Define a temporary method that queues-up a the real method call\r\n    return function () {\r\n        var funcThis = this;\r\n        // Capture the original arguments passed to the method\r\n        var orgArgs = arguments;\r\n        var hooks = aiHook.h;\r\n        var funcArgs = {\r\n            name: aiHook.n,\r\n            inst: funcThis,\r\n            ctx: null,\r\n            set: _replaceArg\r\n        };\r\n        var hookCtx = [];\r\n        var cbArgs = _createArgs([funcArgs], orgArgs);\r\n        function _createArgs(target, theArgs) {\r\n            _arrLoop(theArgs, function (arg) {\r\n                target.push(arg);\r\n            });\r\n            return target;\r\n        }\r\n        function _replaceArg(idx, value) {\r\n            orgArgs = _createArgs([], orgArgs);\r\n            orgArgs[idx] = value;\r\n            cbArgs = _createArgs([funcArgs], orgArgs);\r\n        }\r\n        // Call the pre-request hooks\r\n        _doCallbacks(hooks, funcArgs, cbArgs, hookCtx, 0 /* Request */);\r\n        // Call the original function was called\r\n        var theFunc = aiHook.f;\r\n        try {\r\n            funcArgs.rslt = theFunc.apply(funcThis, orgArgs);\r\n        }\r\n        catch (err) {\r\n            // Report the request callback\r\n            funcArgs.err = err;\r\n            _doCallbacks(hooks, funcArgs, cbArgs, hookCtx, 3 /* FunctionError */);\r\n            // rethrow the original exception so anyone listening for it can catch the exception\r\n            throw err;\r\n        }\r\n        // Call the post-request hooks\r\n        _doCallbacks(hooks, funcArgs, cbArgs, hookCtx, 1 /* Response */);\r\n        return funcArgs.rslt;\r\n    };\r\n}\r\n/**\r\n * Pre-lookup to check if we are running on a modern browser (i.e. not IE8)\r\n * @ignore\r\n */\r\nvar _objGetPrototypeOf = Object[\"getPrototypeOf\"];\r\n/**\r\n * Helper used to get the prototype of the target object as getPrototypeOf is not available in an ES3 environment.\r\n * @ignore\r\n */\r\nfunction _getObjProto(target) {\r\n    if (target) {\r\n        // This method doesn't existing in older browsers (e.g. IE8)\r\n        if (_objGetPrototypeOf) {\r\n            return _objGetPrototypeOf(target);\r\n        }\r\n        // target[Constructor] May break if the constructor has been changed or removed\r\n        var newProto = target[str__Proto] || target[strShimPrototype] || target[strConstructor];\r\n        if (newProto) {\r\n            return newProto;\r\n        }\r\n    }\r\n    return null;\r\n}\r\n/** @ignore */\r\nfunction _getOwner(target, name, checkPrototype) {\r\n    var owner = null;\r\n    if (target) {\r\n        if (hasOwnProperty(target, name)) {\r\n            owner = target;\r\n        }\r\n        else if (checkPrototype) {\r\n            owner = _getOwner(_getObjProto(target), name, false);\r\n        }\r\n    }\r\n    return owner;\r\n}\r\n/**\r\n * Intercept the named prototype functions for the target class / object\r\n * @param target - The target object\r\n * @param funcName - The function name\r\n * @param callbacks - The callbacks to configure and call whenever the function is called\r\n */\r\nexport function InstrumentProto(target, funcName, callbacks) {\r\n    if (target) {\r\n        return InstrumentFunc(target[strShimPrototype], funcName, callbacks, false);\r\n    }\r\n    return null;\r\n}\r\n/**\r\n * Intercept the named prototype functions for the target class / object\r\n * @param target - The target object\r\n * @param funcNames - The function names to intercept and call\r\n * @param callbacks - The callbacks to configure and call whenever the function is called\r\n */\r\nexport function InstrumentProtos(target, funcNames, callbacks) {\r\n    if (target) {\r\n        return InstrumentFuncs(target[strShimPrototype], funcNames, callbacks, false);\r\n    }\r\n    return null;\r\n}\r\n/**\r\n * Intercept the named prototype functions for the target class / object\r\n * @param target - The target object\r\n * @param funcName - The function name\r\n * @param callbacks - The callbacks to configure and call whenever the function is called\r\n * @param checkPrototype - If the function doesn't exist on the target should it attempt to hook the prototype function\r\n */\r\nexport function InstrumentFunc(target, funcName, callbacks, checkPrototype) {\r\n    if (checkPrototype === void 0) { checkPrototype = true; }\r\n    if (target && funcName && callbacks) {\r\n        var owner = _getOwner(target, funcName, checkPrototype);\r\n        if (owner) {\r\n            var fn = owner[funcName];\r\n            if (typeof fn === strShimFunction) {\r\n                var aiHook_1 = fn[aiInstrumentHooks];\r\n                if (!aiHook_1) {\r\n                    // Only hook the function once\r\n                    aiHook_1 = {\r\n                        i: 0,\r\n                        n: funcName,\r\n                        f: fn,\r\n                        h: []\r\n                    };\r\n                    // Override (hook) the original function\r\n                    var newFunc = _createFunctionHook(aiHook_1);\r\n                    newFunc[aiInstrumentHooks] = aiHook_1; // Tag and store the function hooks\r\n                    owner[funcName] = newFunc;\r\n                }\r\n                var theHook = {\r\n                    // tslint:disable:object-literal-shorthand\r\n                    id: aiHook_1.i,\r\n                    cbks: callbacks,\r\n                    rm: function () {\r\n                        // DO NOT Use () => { shorthand for the function as the this gets replaced\r\n                        // with the outer this and not the this for theHook instance.\r\n                        var id = this.id;\r\n                        _arrLoop(aiHook_1.h, function (hook, idx) {\r\n                            if (hook.id === id) {\r\n                                aiHook_1.h.splice(idx, 1);\r\n                                return 1;\r\n                            }\r\n                        });\r\n                    }\r\n                    // tslint:enable:object-literal-shorthand\r\n                };\r\n                aiHook_1.i++;\r\n                aiHook_1.h.push(theHook);\r\n                return theHook;\r\n            }\r\n        }\r\n    }\r\n    return null;\r\n}\r\n/**\r\n * Intercept the named functions for the target class / object\r\n * @param target - The target object\r\n * @param funcNames - The function names to intercept and call\r\n * @param callbacks - The callbacks to configure and call whenever the function is called\r\n * @param checkPrototype - If the function doesn't exist on the target should it attempt to hook the prototype function\r\n */\r\nexport function InstrumentFuncs(target, funcNames, callbacks, checkPrototype) {\r\n    if (checkPrototype === void 0) { checkPrototype = true; }\r\n    var hooks = null;\r\n    _arrLoop(funcNames, function (funcName) {\r\n        var hook = InstrumentFunc(target, funcName, callbacks, checkPrototype);\r\n        if (hook) {\r\n            if (!hooks) {\r\n                hooks = [];\r\n            }\r\n            hooks.push(hook);\r\n        }\r\n    });\r\n    return hooks;\r\n}\r\n//# sourceMappingURL=InstrumentHooks.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { dataSanitizeUrl, dateTimeUtilsDuration, urlGetAbsoluteUrl, urlGetCompleteUrl, msToTimeSpan } from \"@microsoft/applicationinsights-common\";\r\nimport { objKeys, arrForEach, isNumber, isString, normalizeJsName, objForEachKey } from \"@microsoft/applicationinsights-core-js\";\r\nimport dynamicProto from \"@microsoft/dynamicproto-js\";\r\nvar strProperties = \"properties\";\r\n/** @ignore */\r\nfunction _calcPerfDuration(resourceEntry, start, end) {\r\n    var result = 0;\r\n    var from = resourceEntry[start];\r\n    var to = resourceEntry[end];\r\n    if (from && to) {\r\n        result = dateTimeUtilsDuration(from, to);\r\n    }\r\n    return result;\r\n}\r\n/** @ignore */\r\nfunction _setPerfDuration(props, name, resourceEntry, start, end) {\r\n    var result = 0;\r\n    var value = _calcPerfDuration(resourceEntry, start, end);\r\n    if (value) {\r\n        result = _setPerfValue(props, name, msToTimeSpan(value));\r\n    }\r\n    return result;\r\n}\r\n/** @ignore */\r\nfunction _setPerfValue(props, name, value) {\r\n    var strPerf = \"ajaxPerf\";\r\n    var result = 0;\r\n    if (props && name && value) {\r\n        var perfData = props[strPerf] = (props[strPerf] || {});\r\n        perfData[name] = value;\r\n        result = 1;\r\n    }\r\n    return result;\r\n}\r\n/** @ignore */\r\nfunction _populatePerfData(ajaxData, dependency) {\r\n    /*\r\n    * https://developer.mozilla.org/en-US/docs/Web/API/Resource_Timing_API/Using_the_Resource_Timing_API\r\n    *  | -startTime\r\n    *  | -redirectStart\r\n    *  |            | -redirectEnd\r\n    *  |            | | -fetchStart\r\n    *  |            | |   | -domainLookupStart\r\n    *  |            | |   |                |- domainLookupEnd\r\n    *  |            | |   |                | | -connectStart\r\n    *  |            | |   |                | |  | -secureConnectionStart\r\n    *  |            | |   |                | |  |        | -connectEnd\r\n    *  |            | |   |                | |  |        | | -requestStart\r\n    *  |            | |   |                | |  |        | |           | | -responseStart\r\n    *  |            | |   |                | |  |        | |           | |            | | -responseEnd\r\n    *  +------------+-+---+----------------+-+--+--------+-+-----------+-+------------+-+\r\n    *  |--redirect--| |---|--domainLookup--| |--connect--| |--request--| |--response--| |\r\n    *  |-------------------networkConnect----------------|\r\n    *  |                                                   |---------sentRequest--------|\r\n    *  |------------------------------------perfTotal-----------------------------------|\r\n    */\r\n    var resourceEntry = ajaxData.perfTiming;\r\n    var props = dependency[strProperties] || {};\r\n    var propsSet = 0;\r\n    var strName = \"name\";\r\n    var strStart = \"Start\";\r\n    var strEnd = \"End\";\r\n    var strDomainLookup = \"domainLookup\";\r\n    var strConnect = \"connect\";\r\n    var strRedirect = \"redirect\";\r\n    var strRequest = \"request\";\r\n    var strResponse = \"response\";\r\n    var strDuration = \"duration\";\r\n    var strStartTime = \"startTime\";\r\n    var strDomainLookupStart = strDomainLookup + strStart;\r\n    var strDomainLookupEnd = strDomainLookup + strEnd;\r\n    var strConnectStart = strConnect + strStart;\r\n    var strConnectEnd = strConnect + strEnd;\r\n    var strRequestStart = strRequest + strStart;\r\n    var strRequestEnd = strRequest + strEnd;\r\n    var strResponseStart = strResponse + strStart;\r\n    var strResponseEnd = strResponse + strEnd;\r\n    var strRedirectStart = strRedirect + strStart;\r\n    var strRedirectEnd = strRedirect = strEnd;\r\n    var strTransferSize = \"transferSize\";\r\n    var strEncodedBodySize = \"encodedBodySize\";\r\n    var strDecodedBodySize = \"decodedBodySize\";\r\n    var strServerTiming = \"serverTiming\";\r\n    if (resourceEntry) {\r\n        // redirect\r\n        propsSet |= _setPerfDuration(props, strRedirect, resourceEntry, strRedirectStart, strRedirectEnd);\r\n        // domainLookup\r\n        propsSet |= _setPerfDuration(props, strDomainLookup, resourceEntry, strDomainLookupStart, strDomainLookupEnd);\r\n        // connect\r\n        propsSet |= _setPerfDuration(props, strConnect, resourceEntry, strConnectStart, strConnectEnd);\r\n        // request\r\n        propsSet |= _setPerfDuration(props, strRequest, resourceEntry, strRequestStart, strRequestEnd);\r\n        // response\r\n        propsSet |= _setPerfDuration(props, strResponse, resourceEntry, strResponseStart, strResponseEnd);\r\n        // Network connection time\r\n        propsSet |= _setPerfDuration(props, \"networkConnect\", resourceEntry, strStartTime, strConnectEnd);\r\n        // Sent Request\r\n        propsSet |= _setPerfDuration(props, \"sentRequest\", resourceEntry, strRequestStart, strResponseEnd);\r\n        // PerfTotal / Duration\r\n        var duration = resourceEntry[strDuration];\r\n        if (!duration) {\r\n            duration = _calcPerfDuration(resourceEntry, strStartTime, strResponseEnd) || 0;\r\n        }\r\n        propsSet |= _setPerfValue(props, strDuration, duration);\r\n        propsSet |= _setPerfValue(props, \"perfTotal\", duration);\r\n        var serverTiming = resourceEntry[strServerTiming];\r\n        if (serverTiming) {\r\n            var server_1 = {};\r\n            arrForEach(serverTiming, function (value, idx) {\r\n                var name = normalizeJsName(value[strName] || \"\" + idx);\r\n                var newValue = server_1[name] || {};\r\n                objForEachKey(value, function (key, val) {\r\n                    if (key !== strName && isString(val) || isNumber(val)) {\r\n                        if (newValue[key]) {\r\n                            val = newValue[key] + \";\" + val;\r\n                        }\r\n                        if (val || !isString(val)) {\r\n                            // Only set the value if it has a value and it's not an empty string\r\n                            newValue[key] = val;\r\n                        }\r\n                    }\r\n                });\r\n                server_1[name] = newValue;\r\n            });\r\n            propsSet |= _setPerfValue(props, strServerTiming, server_1);\r\n        }\r\n        propsSet |= _setPerfValue(props, strTransferSize, resourceEntry[strTransferSize]);\r\n        propsSet |= _setPerfValue(props, strEncodedBodySize, resourceEntry[strEncodedBodySize]);\r\n        propsSet |= _setPerfValue(props, strDecodedBodySize, resourceEntry[strDecodedBodySize]);\r\n    }\r\n    else {\r\n        if (ajaxData.perfMark) {\r\n            propsSet |= _setPerfValue(props, \"missing\", ajaxData.perfAttempts);\r\n        }\r\n    }\r\n    if (propsSet) {\r\n        dependency[strProperties] = props;\r\n    }\r\n}\r\nvar XHRMonitoringState = /** @class */ (function () {\r\n    function XHRMonitoringState() {\r\n        var self = this;\r\n        self.openDone = false;\r\n        self.setRequestHeaderDone = false;\r\n        self.sendDone = false;\r\n        self.abortDone = false;\r\n        // <summary>True, if onreadyStateChangeCallback function attached to xhr, otherwise false</summary>\r\n        self.stateChangeAttached = false;\r\n    }\r\n    return XHRMonitoringState;\r\n}());\r\nexport { XHRMonitoringState };\r\nvar ajaxRecord = /** @class */ (function () {\r\n    function ajaxRecord(traceID, spanID, logger) {\r\n        var self = this;\r\n        var _logger = logger;\r\n        var strResponseText = \"responseText\";\r\n        // Assigning the initial/default values within the constructor to avoid typescript from creating a bunch of\r\n        // this.XXXX = null\r\n        self.perfMark = null;\r\n        self.completed = false;\r\n        self.requestHeadersSize = null;\r\n        self.requestHeaders = null;\r\n        self.responseReceivingDuration = null;\r\n        self.callbackDuration = null;\r\n        self.ajaxTotalDuration = null;\r\n        self.aborted = 0;\r\n        self.pageUrl = null;\r\n        self.requestUrl = null;\r\n        self.requestSize = 0;\r\n        self.method = null;\r\n        self.status = null;\r\n        self.requestSentTime = null;\r\n        self.responseStartedTime = null;\r\n        self.responseFinishedTime = null;\r\n        self.callbackFinishedTime = null;\r\n        self.endTime = null;\r\n        self.xhrMonitoringState = new XHRMonitoringState();\r\n        self.clientFailure = 0;\r\n        self.traceID = traceID;\r\n        self.spanID = spanID;\r\n        dynamicProto(ajaxRecord, self, function (self) {\r\n            self.getAbsoluteUrl = function () {\r\n                return self.requestUrl ? urlGetAbsoluteUrl(self.requestUrl) : null;\r\n            };\r\n            self.getPathName = function () {\r\n                return self.requestUrl ? dataSanitizeUrl(_logger, urlGetCompleteUrl(self.method, self.requestUrl)) : null;\r\n            };\r\n            self.CreateTrackItem = function (ajaxType, enableRequestHeaderTracking, getResponse) {\r\n                var _a;\r\n                // round to 3 decimal points\r\n                self.ajaxTotalDuration = Math.round(dateTimeUtilsDuration(self.requestSentTime, self.responseFinishedTime) * 1000) / 1000;\r\n                if (self.ajaxTotalDuration < 0) {\r\n                    return null;\r\n                }\r\n                var dependency = (_a = {\r\n                        id: \"|\" + self.traceID + \".\" + self.spanID,\r\n                        target: self.getAbsoluteUrl(),\r\n                        name: self.getPathName(),\r\n                        type: ajaxType,\r\n                        startTime: null,\r\n                        duration: self.ajaxTotalDuration,\r\n                        success: (+(self.status)) >= 200 && (+(self.status)) < 400,\r\n                        responseCode: (+(self.status)),\r\n                        method: self.method\r\n                    },\r\n                    _a[strProperties] = { HttpMethod: self.method },\r\n                    _a);\r\n                if (self.requestSentTime) {\r\n                    // Set the correct dependency start time\r\n                    dependency.startTime = new Date();\r\n                    dependency.startTime.setTime(self.requestSentTime);\r\n                }\r\n                // Add Ajax perf details if available\r\n                _populatePerfData(self, dependency);\r\n                if (enableRequestHeaderTracking) {\r\n                    if (objKeys(self.requestHeaders).length > 0) {\r\n                        dependency[strProperties] = dependency[strProperties] || {};\r\n                        dependency[strProperties].requestHeaders = self.requestHeaders;\r\n                    }\r\n                }\r\n                if (getResponse) {\r\n                    var response = getResponse();\r\n                    if (response) {\r\n                        // enrich dependency target with correlation context from the server\r\n                        var correlationContext = response.correlationContext;\r\n                        if (correlationContext) {\r\n                            dependency.correlationContext = /* dependency.target + \" | \" + */ correlationContext;\r\n                        }\r\n                        if (response.headerMap) {\r\n                            if (objKeys(response.headerMap).length > 0) {\r\n                                dependency[strProperties] = dependency[strProperties] || {};\r\n                                dependency[strProperties].responseHeaders = response.headerMap;\r\n                            }\r\n                        }\r\n                        if (self.errorStatusText && self.status >= 400) {\r\n                            var responseType = response.type;\r\n                            dependency[strProperties] = dependency[strProperties] || {};\r\n                            if (responseType === \"\" || responseType === \"text\") {\r\n                                dependency[strProperties][strResponseText] = response[strResponseText] ? response.statusText + \" - \" + response[strResponseText] : response.statusText;\r\n                            }\r\n                            if (responseType === \"json\") {\r\n                                dependency[strProperties][strResponseText] = response.response ? response.statusText + \" - \" + JSON.stringify(response.response) : response.statusText;\r\n                            }\r\n                        }\r\n                    }\r\n                }\r\n                return dependency;\r\n            };\r\n        });\r\n    }\r\n    ajaxRecord.prototype.getAbsoluteUrl = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return null;\r\n    };\r\n    ajaxRecord.prototype.getPathName = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return null;\r\n    };\r\n    ajaxRecord.prototype.CreateTrackItem = function (ajaxType, enableRequestHeaderTracking, getResponse) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n        return null;\r\n    };\r\n    return ajaxRecord;\r\n}());\r\nexport { ajaxRecord };\r\n//# sourceMappingURL=ajaxRecord.js.map","import { generateW3CId } from \"@microsoft/applicationinsights-core-js\";\r\nvar Traceparent = /** @class */ (function () {\r\n    function Traceparent(traceId, spanId) {\r\n        var self = this;\r\n        self.traceFlag = Traceparent.DEFAULT_TRACE_FLAG;\r\n        self.version = Traceparent.DEFAULT_VERSION;\r\n        if (traceId && Traceparent.isValidTraceId(traceId)) {\r\n            self.traceId = traceId;\r\n        }\r\n        else {\r\n            self.traceId = generateW3CId();\r\n        }\r\n        if (spanId && Traceparent.isValidSpanId(spanId)) {\r\n            self.spanId = spanId;\r\n        }\r\n        else {\r\n            self.spanId = generateW3CId().substr(0, 16);\r\n        }\r\n    }\r\n    Traceparent.isValidTraceId = function (id) {\r\n        return id.match(/^[0-9a-f]{32}$/) && id !== \"00000000000000000000000000000000\";\r\n    };\r\n    Traceparent.isValidSpanId = function (id) {\r\n        return id.match(/^[0-9a-f]{16}$/) && id !== \"0000000000000000\";\r\n    };\r\n    Traceparent.prototype.toString = function () {\r\n        var self = this;\r\n        return self.version + \"-\" + self.traceId + \"-\" + self.spanId + \"-\" + self.traceFlag;\r\n    };\r\n    Traceparent.DEFAULT_TRACE_FLAG = \"01\";\r\n    Traceparent.DEFAULT_VERSION = \"00\";\r\n    return Traceparent;\r\n}());\r\nexport { Traceparent };\r\n//# sourceMappingURL=TraceParent.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { __assign, __extends } from \"tslib\";\r\nimport { RequestHeaders, CorrelationIdHelper, TelemetryItemCreator, RemoteDependencyData, dateTimeUtilsNow, DisabledPropertyName, PropertiesPluginIdentifier, DistributedTracingModes, isInternalApplicationInsightsEndpoint } from \"@microsoft/applicationinsights-common\";\r\nimport { isNullOrUndefined, arrForEach, isString, strTrim, isFunction, LoggingSeverity, _InternalMessageId, BaseTelemetryPlugin, getLocation, getGlobal, strPrototype, InstrumentFunc, InstrumentProto, getPerformance, objForEachKey, generateW3CId, getIEVersion, dumpObj, isXhrSupported, attachEvent } from \"@microsoft/applicationinsights-core-js\";\r\nimport { ajaxRecord } from \"./ajaxRecord\";\r\nimport { Traceparent } from \"./TraceParent\";\r\nimport dynamicProto from \"@microsoft/dynamicproto-js\";\r\nvar AJAX_MONITOR_PREFIX = \"ai.ajxmn.\";\r\nvar strDiagLog = \"diagLog\";\r\nvar strAjaxData = \"ajaxData\";\r\nvar strThrowInternal = \"throwInternal\";\r\nvar strFetch = \"fetch\";\r\n// Using a global value so that to handle same iKey with multiple app insights instances (mostly for testing)\r\nvar _markCount = 0;\r\n/** @Ignore */\r\nfunction _supportsFetch() {\r\n    var _global = getGlobal();\r\n    if (!_global ||\r\n        isNullOrUndefined(_global.Request) ||\r\n        isNullOrUndefined(_global.Request[strPrototype]) ||\r\n        isNullOrUndefined(_global[strFetch])) {\r\n        return null;\r\n    }\r\n    return _global[strFetch];\r\n}\r\n/**\r\n * Determines whether ajax monitoring can be enabled on this document\r\n * @returns True if Ajax monitoring is supported on this page, otherwise false\r\n * @ignore\r\n */\r\nfunction _supportsAjaxMonitoring(ajaxMonitorInstance) {\r\n    var result = false;\r\n    if (isXhrSupported()) {\r\n        var proto = XMLHttpRequest[strPrototype];\r\n        result = !isNullOrUndefined(proto) &&\r\n            !isNullOrUndefined(proto.open) && // eslint-disable-line security/detect-non-literal-fs-filename -- false positive\r\n            !isNullOrUndefined(proto.send) &&\r\n            !isNullOrUndefined(proto.abort);\r\n    }\r\n    var ieVer = getIEVersion();\r\n    if (ieVer && ieVer < 9) {\r\n        result = false;\r\n    }\r\n    if (result) {\r\n        // Disable if the XmlHttpRequest can't be extended or hooked\r\n        try {\r\n            var xhr = new XMLHttpRequest();\r\n            xhr[strAjaxData] = {};\r\n            // Check that we can update the prototype\r\n            var theOpen = XMLHttpRequest[strPrototype].open;\r\n            XMLHttpRequest[strPrototype].open = theOpen;\r\n        }\r\n        catch (e) {\r\n            // We can't decorate the xhr object so disable monitoring\r\n            result = false;\r\n            _throwInternalCritical(ajaxMonitorInstance, _InternalMessageId.FailedMonitorAjaxOpen, \"Failed to enable XMLHttpRequest monitoring, extension is not supported\", {\r\n                exception: dumpObj(e)\r\n            });\r\n        }\r\n    }\r\n    return result;\r\n}\r\n/** @Ignore */\r\nfunction _getFailedAjaxDiagnosticsMessage(xhr) {\r\n    var result = \"\";\r\n    try {\r\n        if (!isNullOrUndefined(xhr) &&\r\n            !isNullOrUndefined(xhr[strAjaxData]) &&\r\n            !isNullOrUndefined(xhr[strAjaxData].requestUrl)) {\r\n            result += \"(url: '\" + xhr[strAjaxData].requestUrl + \"')\";\r\n        }\r\n    }\r\n    catch (e) {\r\n        // eslint-disable-next-line no-empty\r\n    }\r\n    return result;\r\n}\r\n/** @ignore */\r\nfunction _throwInternalCritical(ajaxMonitorInstance, msgId, message, properties, isUserAct) {\r\n    ajaxMonitorInstance[strDiagLog]()[strThrowInternal](LoggingSeverity.CRITICAL, msgId, message, properties, isUserAct);\r\n}\r\n/** @ignore */\r\nfunction _throwInternalWarning(ajaxMonitorInstance, msgId, message, properties, isUserAct) {\r\n    ajaxMonitorInstance[strDiagLog]()[strThrowInternal](LoggingSeverity.WARNING, msgId, message, properties, isUserAct);\r\n}\r\n/** @Ignore */\r\nfunction _createErrorCallbackFunc(ajaxMonitorInstance, internalMessage, message) {\r\n    // tslint:disable-next-line\r\n    return function (args) {\r\n        _throwInternalCritical(ajaxMonitorInstance, internalMessage, message, {\r\n            ajaxDiagnosticsMessage: _getFailedAjaxDiagnosticsMessage(args.inst),\r\n            exception: dumpObj(args.err)\r\n        });\r\n    };\r\n}\r\nfunction _indexOf(value, match) {\r\n    if (value && match) {\r\n        return value.indexOf(match);\r\n    }\r\n    return -1;\r\n}\r\nvar AjaxMonitor = /** @class */ (function (_super) {\r\n    __extends(AjaxMonitor, _super);\r\n    function AjaxMonitor() {\r\n        var _this = _super.call(this) || this;\r\n        _this.identifier = AjaxMonitor.identifier;\r\n        _this.priority = 120;\r\n        var strTrackDependencyDataInternal = \"trackDependencyDataInternal\"; // Using string to help with minification\r\n        var location = getLocation();\r\n        var _fetchInitialized = false; // fetch monitoring initialized\r\n        var _xhrInitialized = false; // XHR monitoring initialized\r\n        var _currentWindowHost = location && location.host && location.host.toLowerCase();\r\n        var _config = AjaxMonitor.getEmptyConfig();\r\n        var _enableRequestHeaderTracking = false;\r\n        var _enableAjaxErrorStatusText = false;\r\n        var _trackAjaxAttempts = 0;\r\n        var _context;\r\n        var _isUsingW3CHeaders;\r\n        var _isUsingAIHeaders;\r\n        var _markPrefix;\r\n        var _enableAjaxPerfTracking = false;\r\n        var _maxAjaxCallsPerView = 0;\r\n        var _enableResponseHeaderTracking = false;\r\n        var _hooks = [];\r\n        var _disabledUrls = {};\r\n        var _excludeRequestFromAutoTrackingPatterns;\r\n        var _addRequestContext;\r\n        dynamicProto(AjaxMonitor, _this, function (_self, base) {\r\n            _self.initialize = function (config, core, extensions, pluginChain) {\r\n                if (!_self.isInitialized()) {\r\n                    base.initialize(config, core, extensions, pluginChain);\r\n                    var ctx_1 = _self._getTelCtx();\r\n                    var defaultConfig = AjaxMonitor.getDefaultConfig();\r\n                    objForEachKey(defaultConfig, function (field, value) {\r\n                        _config[field] = ctx_1.getConfig(AjaxMonitor.identifier, field, value);\r\n                    });\r\n                    var distributedTracingMode = _config.distributedTracingMode;\r\n                    _enableRequestHeaderTracking = _config.enableRequestHeaderTracking;\r\n                    _enableAjaxErrorStatusText = _config.enableAjaxErrorStatusText;\r\n                    _enableAjaxPerfTracking = _config.enableAjaxPerfTracking;\r\n                    _maxAjaxCallsPerView = _config.maxAjaxCallsPerView;\r\n                    _enableResponseHeaderTracking = _config.enableResponseHeaderTracking;\r\n                    _excludeRequestFromAutoTrackingPatterns = _config.excludeRequestFromAutoTrackingPatterns;\r\n                    _addRequestContext = _config.addRequestContext;\r\n                    _isUsingAIHeaders = distributedTracingMode === DistributedTracingModes.AI || distributedTracingMode === DistributedTracingModes.AI_AND_W3C;\r\n                    _isUsingW3CHeaders = distributedTracingMode === DistributedTracingModes.AI_AND_W3C || distributedTracingMode === DistributedTracingModes.W3C;\r\n                    if (_enableAjaxPerfTracking) {\r\n                        var iKey = config.instrumentationKey || \"unkwn\";\r\n                        if (iKey.length > 5) {\r\n                            _markPrefix = AJAX_MONITOR_PREFIX + iKey.substring(iKey.length - 5) + \".\";\r\n                        }\r\n                        else {\r\n                            _markPrefix = AJAX_MONITOR_PREFIX + iKey + \".\";\r\n                        }\r\n                    }\r\n                    if (_config.disableAjaxTracking === false) {\r\n                        _instrumentXhr();\r\n                    }\r\n                    _instrumentFetch();\r\n                    if (extensions.length > 0 && extensions) {\r\n                        var propExt = void 0, extIx = 0;\r\n                        while (!propExt && extIx < extensions.length) {\r\n                            if (extensions[extIx] && extensions[extIx].identifier === PropertiesPluginIdentifier) {\r\n                                propExt = extensions[extIx];\r\n                            }\r\n                            extIx++;\r\n                        }\r\n                        if (propExt) {\r\n                            _context = propExt.context; // we could move IPropertiesPlugin to common as well\r\n                        }\r\n                    }\r\n                }\r\n            };\r\n            _self.teardown = function () {\r\n                // Remove all instrumentation hooks\r\n                arrForEach(_hooks, function (fn) {\r\n                    fn.rm();\r\n                });\r\n                _hooks = [];\r\n                _fetchInitialized = false;\r\n                _xhrInitialized = false;\r\n                _self.setInitialized(false);\r\n            };\r\n            _self.trackDependencyData = function (dependency, properties) {\r\n                _self[strTrackDependencyDataInternal](dependency, properties);\r\n            };\r\n            _self.includeCorrelationHeaders = function (ajaxData, input, init, xhr) {\r\n                // Test Hook to allow the overriding of the location host\r\n                var currentWindowHost = _self[\"_currentWindowHost\"] || _currentWindowHost;\r\n                if (input) { // Fetch\r\n                    if (CorrelationIdHelper.canIncludeCorrelationHeader(_config, ajaxData.getAbsoluteUrl(), currentWindowHost)) {\r\n                        if (!init) {\r\n                            init = {};\r\n                        }\r\n                        // init headers override original request headers\r\n                        // so, if they exist use only them, otherwise use request's because they should have been applied in the first place\r\n                        // not using original request headers will result in them being lost\r\n                        init.headers = new Headers(init.headers || (input instanceof Request ? (input.headers || {}) : {}));\r\n                        if (_isUsingAIHeaders) {\r\n                            var id = \"|\" + ajaxData.traceID + \".\" + ajaxData.spanID;\r\n                            init.headers.set(RequestHeaders.requestIdHeader, id);\r\n                            if (_enableRequestHeaderTracking) {\r\n                                ajaxData.requestHeaders[RequestHeaders.requestIdHeader] = id;\r\n                            }\r\n                        }\r\n                        var appId = _config.appId || (_context && _context.appId());\r\n                        if (appId) {\r\n                            init.headers.set(RequestHeaders.requestContextHeader, RequestHeaders.requestContextAppIdFormat + appId);\r\n                            if (_enableRequestHeaderTracking) {\r\n                                ajaxData.requestHeaders[RequestHeaders.requestContextHeader] = RequestHeaders.requestContextAppIdFormat + appId;\r\n                            }\r\n                        }\r\n                        if (_isUsingW3CHeaders) {\r\n                            var traceparent = new Traceparent(ajaxData.traceID, ajaxData.spanID);\r\n                            init.headers.set(RequestHeaders.traceParentHeader, traceparent.toString());\r\n                            if (_enableRequestHeaderTracking) {\r\n                                ajaxData.requestHeaders[RequestHeaders.traceParentHeader] = traceparent.toString();\r\n                            }\r\n                        }\r\n                    }\r\n                    return init;\r\n                }\r\n                else if (xhr) { // XHR\r\n                    if (CorrelationIdHelper.canIncludeCorrelationHeader(_config, ajaxData.getAbsoluteUrl(), currentWindowHost)) {\r\n                        if (_isUsingAIHeaders) {\r\n                            var id = \"|\" + ajaxData.traceID + \".\" + ajaxData.spanID;\r\n                            xhr.setRequestHeader(RequestHeaders.requestIdHeader, id);\r\n                            if (_enableRequestHeaderTracking) {\r\n                                ajaxData.requestHeaders[RequestHeaders.requestIdHeader] = id;\r\n                            }\r\n                        }\r\n                        var appId = _config.appId || (_context && _context.appId());\r\n                        if (appId) {\r\n                            xhr.setRequestHeader(RequestHeaders.requestContextHeader, RequestHeaders.requestContextAppIdFormat + appId);\r\n                            if (_enableRequestHeaderTracking) {\r\n                                ajaxData.requestHeaders[RequestHeaders.requestContextHeader] = RequestHeaders.requestContextAppIdFormat + appId;\r\n                            }\r\n                        }\r\n                        if (_isUsingW3CHeaders) {\r\n                            var traceparent = new Traceparent(ajaxData.traceID, ajaxData.spanID);\r\n                            xhr.setRequestHeader(RequestHeaders.traceParentHeader, traceparent.toString());\r\n                            if (_enableRequestHeaderTracking) {\r\n                                ajaxData.requestHeaders[RequestHeaders.traceParentHeader] = traceparent.toString();\r\n                            }\r\n                        }\r\n                    }\r\n                    return xhr;\r\n                }\r\n                return undefined;\r\n            };\r\n            _self[strTrackDependencyDataInternal] = function (dependency, properties, systemProperties) {\r\n                if (_maxAjaxCallsPerView === -1 || _trackAjaxAttempts < _maxAjaxCallsPerView) {\r\n                    // Hack since expected format in w3c mode is |abc.def.\r\n                    // Non-w3c format is |abc.def\r\n                    // @todo Remove if better solution is available, e.g. handle in portal\r\n                    if ((_config.distributedTracingMode === DistributedTracingModes.W3C\r\n                        || _config.distributedTracingMode === DistributedTracingModes.AI_AND_W3C)\r\n                        && typeof dependency.id === \"string\" && dependency.id[dependency.id.length - 1] !== \".\") {\r\n                        dependency.id += \".\";\r\n                    }\r\n                    if (isNullOrUndefined(dependency.startTime)) {\r\n                        dependency.startTime = new Date();\r\n                    }\r\n                    var item = TelemetryItemCreator.create(dependency, RemoteDependencyData.dataType, RemoteDependencyData.envelopeType, _self[strDiagLog](), properties, systemProperties);\r\n                    _self.core.track(item);\r\n                }\r\n                else if (_trackAjaxAttempts === _maxAjaxCallsPerView) {\r\n                    _throwInternalCritical(_self, _InternalMessageId.MaxAjaxPerPVExceeded, \"Maximum ajax per page view limit reached, ajax monitoring is paused until the next trackPageView(). In order to increase the limit set the maxAjaxCallsPerView configuration parameter.\", true);\r\n                }\r\n                ++_trackAjaxAttempts;\r\n            };\r\n            // discard the header if it's defined as ignoreHeaders in ICorrelationConfig\r\n            function _canIncludeHeaders(header) {\r\n                var rlt = true;\r\n                if (header || _config.ignoreHeaders) {\r\n                    arrForEach(_config.ignoreHeaders, (function (key) {\r\n                        if (key.toLowerCase() === header.toLowerCase()) {\r\n                            rlt = false;\r\n                            return -1;\r\n                        }\r\n                    }));\r\n                }\r\n                return rlt;\r\n            }\r\n            // Fetch Stuff\r\n            function _instrumentFetch() {\r\n                var fetch = _supportsFetch();\r\n                if (!fetch) {\r\n                    return;\r\n                }\r\n                var global = getGlobal();\r\n                var isPolyfill = fetch.polyfill;\r\n                if (_config.disableFetchTracking === false) {\r\n                    _hooks.push(InstrumentFunc(global, strFetch, {\r\n                        // Add request hook\r\n                        req: function (callDetails, input, init) {\r\n                            var fetchData;\r\n                            if (_fetchInitialized &&\r\n                                !_isDisabledRequest(null, input, init) &&\r\n                                // If we have a polyfil and XHR instrumented then let XHR report otherwise we get duplicates\r\n                                !(isPolyfill && _xhrInitialized)) {\r\n                                var ctx = callDetails.ctx();\r\n                                fetchData = _createFetchRecord(input, init);\r\n                                var newInit = _self.includeCorrelationHeaders(fetchData, input, init);\r\n                                if (newInit !== init) {\r\n                                    callDetails.set(1, newInit);\r\n                                }\r\n                                ctx.data = fetchData;\r\n                            }\r\n                        },\r\n                        rsp: function (callDetails, input) {\r\n                            var fetchData = callDetails.ctx().data;\r\n                            if (fetchData) {\r\n                                // Replace the result with the new promise from this code\r\n                                callDetails.rslt = callDetails.rslt.then(function (response) {\r\n                                    _reportFetchMetrics(callDetails, (response || {}).status, input, response, fetchData, function () {\r\n                                        var ajaxResponse = {\r\n                                            statusText: response.statusText,\r\n                                            headerMap: null,\r\n                                            correlationContext: _getFetchCorrelationContext(response)\r\n                                        };\r\n                                        if (_enableResponseHeaderTracking) {\r\n                                            var responseHeaderMap_1 = {};\r\n                                            response.headers.forEach(function (value, name) {\r\n                                                if (_canIncludeHeaders(name)) {\r\n                                                    responseHeaderMap_1[name] = value;\r\n                                                }\r\n                                            });\r\n                                            ajaxResponse.headerMap = responseHeaderMap_1;\r\n                                        }\r\n                                        return ajaxResponse;\r\n                                    });\r\n                                    return response;\r\n                                })[\"catch\"](function (reason) {\r\n                                    _reportFetchMetrics(callDetails, 0, input, null, fetchData, null, { error: reason.message });\r\n                                    throw reason;\r\n                                });\r\n                            }\r\n                        },\r\n                        // Create an error callback to report any hook errors\r\n                        hkErr: _createErrorCallbackFunc(_self, _InternalMessageId.FailedMonitorAjaxOpen, \"Failed to monitor Window.fetch, monitoring data for this fetch call may be incorrect.\")\r\n                    }));\r\n                    _fetchInitialized = true;\r\n                }\r\n                else if (isPolyfill) {\r\n                    // If fetch is a polyfill we need to capture the request to ensure that we correctly track\r\n                    // disabled request URLS (i.e. internal urls) to ensure we don't end up in a constant loop\r\n                    // of reporting ourselves, for example React Native uses a polyfill for fetch\r\n                    // Note: Polyfill implementations that don't support the \"poyyfill\" tag are not supported\r\n                    // the workaround is to add a polyfill property to your fetch implementation before initializing\r\n                    // App Insights\r\n                    _hooks.push(InstrumentFunc(global, strFetch, {\r\n                        req: function (callDetails, input, init) {\r\n                            // Just call so that we record any disabled URL\r\n                            _isDisabledRequest(null, input, init);\r\n                        }\r\n                    }));\r\n                }\r\n                if (isPolyfill) {\r\n                    // retag the instrumented fetch with the same polyfill settings this is mostly for testing\r\n                    // But also supports multiple App Insights usages\r\n                    global[strFetch].polyfill = isPolyfill;\r\n                }\r\n            }\r\n            function _hookProto(target, funcName, callbacks) {\r\n                _hooks.push(InstrumentProto(target, funcName, callbacks));\r\n            }\r\n            function _instrumentXhr() {\r\n                if (_supportsAjaxMonitoring(_self) && !_xhrInitialized) {\r\n                    // Instrument open\r\n                    _hookProto(XMLHttpRequest, \"open\", {\r\n                        req: function (args, method, url, async) {\r\n                            var xhr = args.inst;\r\n                            var ajaxData = xhr[strAjaxData];\r\n                            if (!_isDisabledRequest(xhr, url) && _isMonitoredXhrInstance(xhr, true)) {\r\n                                if (!ajaxData || !ajaxData.xhrMonitoringState.openDone) {\r\n                                    // Only create a single ajaxData (even when multiple AI instances are running)\r\n                                    _openHandler(xhr, method, url, async);\r\n                                }\r\n                                // always attach to the on ready state change (required for handling multiple instances)\r\n                                _attachToOnReadyStateChange(xhr);\r\n                            }\r\n                        },\r\n                        hkErr: _createErrorCallbackFunc(_self, _InternalMessageId.FailedMonitorAjaxOpen, \"Failed to monitor XMLHttpRequest.open, monitoring data for this ajax call may be incorrect.\")\r\n                    });\r\n                    // Instrument send\r\n                    _hookProto(XMLHttpRequest, \"send\", {\r\n                        req: function (args, context) {\r\n                            var xhr = args.inst;\r\n                            var ajaxData = xhr[strAjaxData];\r\n                            if (_isMonitoredXhrInstance(xhr) && !ajaxData.xhrMonitoringState.sendDone) {\r\n                                _createMarkId(\"xhr\", ajaxData);\r\n                                ajaxData.requestSentTime = dateTimeUtilsNow();\r\n                                _self.includeCorrelationHeaders(ajaxData, undefined, undefined, xhr);\r\n                                ajaxData.xhrMonitoringState.sendDone = true;\r\n                            }\r\n                        },\r\n                        hkErr: _createErrorCallbackFunc(_self, _InternalMessageId.FailedMonitorAjaxSend, \"Failed to monitor XMLHttpRequest, monitoring data for this ajax call may be incorrect.\")\r\n                    });\r\n                    // Instrument abort\r\n                    _hookProto(XMLHttpRequest, \"abort\", {\r\n                        req: function (args) {\r\n                            var xhr = args.inst;\r\n                            var ajaxData = xhr[strAjaxData];\r\n                            if (_isMonitoredXhrInstance(xhr) && !ajaxData.xhrMonitoringState.abortDone) {\r\n                                ajaxData.aborted = 1;\r\n                                ajaxData.xhrMonitoringState.abortDone = true;\r\n                            }\r\n                        },\r\n                        hkErr: _createErrorCallbackFunc(_self, _InternalMessageId.FailedMonitorAjaxAbort, \"Failed to monitor XMLHttpRequest.abort, monitoring data for this ajax call may be incorrect.\")\r\n                    });\r\n                    // Instrument setRequestHeader\r\n                    if (_enableRequestHeaderTracking) {\r\n                        _hookProto(XMLHttpRequest, \"setRequestHeader\", {\r\n                            req: function (args, header, value) {\r\n                                var xhr = args.inst;\r\n                                if (_isMonitoredXhrInstance(xhr) && _canIncludeHeaders(header)) {\r\n                                    xhr[strAjaxData].requestHeaders[header] = value;\r\n                                }\r\n                            },\r\n                            hkErr: _createErrorCallbackFunc(_self, _InternalMessageId.FailedMonitorAjaxSetRequestHeader, \"Failed to monitor XMLHttpRequest.setRequestHeader, monitoring data for this ajax call may be incorrect.\")\r\n                        });\r\n                    }\r\n                    _xhrInitialized = true;\r\n                }\r\n            }\r\n            function _isDisabledRequest(xhr, request, init) {\r\n                var isDisabled = false;\r\n                var theUrl = ((!isString(request) ? (request || {}).url || \"\" : request) || \"\").toLowerCase();\r\n                // check excludeRequestFromAutoTrackingPatterns before stripping off any query string\r\n                arrForEach(_excludeRequestFromAutoTrackingPatterns, function (regex) {\r\n                    var theRegex = regex;\r\n                    if (isString(regex)) {\r\n                        theRegex = new RegExp(regex);\r\n                    }\r\n                    if (!isDisabled) {\r\n                        isDisabled = theRegex.test(theUrl);\r\n                    }\r\n                });\r\n                // if request url matches with exclude regex pattern, return true and no need to check for headers\r\n                if (isDisabled) {\r\n                    return isDisabled;\r\n                }\r\n                var idx = _indexOf(theUrl, \"?\");\r\n                var idx2 = _indexOf(theUrl, \"#\");\r\n                if (idx === -1 || (idx2 !== -1 && idx2 < idx)) {\r\n                    idx = idx2;\r\n                }\r\n                if (idx !== -1) {\r\n                    // Strip off any Query string\r\n                    theUrl = theUrl.substring(0, idx);\r\n                }\r\n                // check that this instance is not not used by ajax call performed inside client side monitoring to send data to collector\r\n                if (!isNullOrUndefined(xhr)) {\r\n                    // Look on the XMLHttpRequest of the URL string value\r\n                    isDisabled = xhr[DisabledPropertyName] === true || theUrl[DisabledPropertyName] === true;\r\n                }\r\n                else if (!isNullOrUndefined(request)) { // fetch\r\n                    // Look for DisabledPropertyName in either Request or RequestInit\r\n                    isDisabled = (typeof request === \"object\" ? request[DisabledPropertyName] === true : false) ||\r\n                        (init ? init[DisabledPropertyName] === true : false);\r\n                }\r\n                // Also add extra check just in case the XHR or fetch objects where not decorated with the DisableProperty due to sealing or freezing\r\n                if (!isDisabled && theUrl && isInternalApplicationInsightsEndpoint(theUrl)) {\r\n                    isDisabled = true;\r\n                }\r\n                if (isDisabled) {\r\n                    // Add the disabled url if not present\r\n                    if (!_disabledUrls[theUrl]) {\r\n                        _disabledUrls[theUrl] = 1;\r\n                    }\r\n                }\r\n                else {\r\n                    // Check to see if the url is listed as disabled\r\n                    if (_disabledUrls[theUrl]) {\r\n                        isDisabled = true;\r\n                    }\r\n                }\r\n                return isDisabled;\r\n            }\r\n            /// <summary>Verifies that particalar instance of XMLHttpRequest needs to be monitored</summary>\r\n            /// <param name=\"excludeAjaxDataValidation\">Optional parameter. True if ajaxData must be excluded from verification</param>\r\n            /// <returns type=\"bool\">True if instance needs to be monitored, otherwise false</returns>\r\n            function _isMonitoredXhrInstance(xhr, excludeAjaxDataValidation) {\r\n                var ajaxValidation = true;\r\n                var initialized = _xhrInitialized;\r\n                if (!isNullOrUndefined(xhr)) {\r\n                    ajaxValidation = excludeAjaxDataValidation === true || !isNullOrUndefined(xhr[strAjaxData]);\r\n                }\r\n                // checking to see that all interested functions on xhr were instrumented\r\n                return initialized\r\n                    // checking on ajaxData to see that it was not removed in user code\r\n                    && ajaxValidation;\r\n            }\r\n            function _openHandler(xhr, method, url, async) {\r\n                var traceID = (_context && _context.telemetryTrace && _context.telemetryTrace.traceID) || generateW3CId();\r\n                var spanID = generateW3CId().substr(0, 16);\r\n                var ajaxData = new ajaxRecord(traceID, spanID, _self[strDiagLog]());\r\n                ajaxData.method = method;\r\n                ajaxData.requestUrl = url;\r\n                ajaxData.xhrMonitoringState.openDone = true;\r\n                ajaxData.requestHeaders = {};\r\n                ajaxData.async = async;\r\n                ajaxData.errorStatusText = _enableAjaxErrorStatusText;\r\n                xhr[strAjaxData] = ajaxData;\r\n            }\r\n            function _attachToOnReadyStateChange(xhr) {\r\n                xhr[strAjaxData].xhrMonitoringState.stateChangeAttached = attachEvent(xhr, \"readystatechange\", function () {\r\n                    try {\r\n                        if (xhr && xhr.readyState === 4 && _isMonitoredXhrInstance(xhr)) {\r\n                            _onAjaxComplete(xhr);\r\n                        }\r\n                    }\r\n                    catch (e) {\r\n                        var exceptionText = dumpObj(e);\r\n                        // ignore messages with c00c023f, as this a known IE9 XHR abort issue\r\n                        if (!exceptionText || _indexOf(exceptionText.toLowerCase(), \"c00c023f\") === -1) {\r\n                            _throwInternalCritical(_self, _InternalMessageId.FailedMonitorAjaxRSC, \"Failed to monitor XMLHttpRequest 'readystatechange' event handler, monitoring data for this ajax call may be incorrect.\", {\r\n                                ajaxDiagnosticsMessage: _getFailedAjaxDiagnosticsMessage(xhr),\r\n                                exception: exceptionText\r\n                            });\r\n                        }\r\n                    }\r\n                });\r\n            }\r\n            function _getResponseText(xhr) {\r\n                try {\r\n                    var responseType = xhr.responseType;\r\n                    if (responseType === \"\" || responseType === \"text\") {\r\n                        // As per the specification responseText is only valid if the type is an empty string or \"text\"\r\n                        return xhr.responseText;\r\n                    }\r\n                }\r\n                catch (e) {\r\n                    // This shouldn't happen because of the above check -- but just in case, so just ignore\r\n                }\r\n                return null;\r\n            }\r\n            function _onAjaxComplete(xhr) {\r\n                var ajaxData = xhr[strAjaxData];\r\n                ajaxData.responseFinishedTime = dateTimeUtilsNow();\r\n                ajaxData.status = xhr.status;\r\n                function _reportXhrError(e, failedProps) {\r\n                    var errorProps = failedProps || {};\r\n                    errorProps[\"ajaxDiagnosticsMessage\"] = _getFailedAjaxDiagnosticsMessage(xhr);\r\n                    if (e) {\r\n                        errorProps[\"exception\"] = dumpObj(e);\r\n                    }\r\n                    _throwInternalWarning(_self, _InternalMessageId.FailedMonitorAjaxDur, \"Failed to calculate the duration of the ajax call, monitoring data for this ajax call won't be sent.\", errorProps);\r\n                }\r\n                _findPerfResourceEntry(\"xmlhttprequest\", ajaxData, function () {\r\n                    try {\r\n                        var dependency = ajaxData.CreateTrackItem(\"Ajax\", _enableRequestHeaderTracking, function () {\r\n                            var ajaxResponse = {\r\n                                statusText: xhr.statusText,\r\n                                headerMap: null,\r\n                                correlationContext: _getAjaxCorrelationContext(xhr),\r\n                                type: xhr.responseType,\r\n                                responseText: _getResponseText(xhr),\r\n                                response: xhr.response\r\n                            };\r\n                            if (_enableResponseHeaderTracking) {\r\n                                var headers = xhr.getAllResponseHeaders();\r\n                                if (headers) {\r\n                                    // xhr.getAllResponseHeaders() method returns all the response headers, separated by CRLF, as a string or null\r\n                                    // the regex converts the header string into an array of individual headers\r\n                                    var arr = strTrim(headers).split(/[\\r\\n]+/);\r\n                                    var responseHeaderMap_2 = {};\r\n                                    arrForEach(arr, function (line) {\r\n                                        var parts = line.split(\": \");\r\n                                        var header = parts.shift();\r\n                                        var value = parts.join(\": \");\r\n                                        if (_canIncludeHeaders(header)) {\r\n                                            responseHeaderMap_2[header] = value;\r\n                                        }\r\n                                    });\r\n                                    ajaxResponse.headerMap = responseHeaderMap_2;\r\n                                }\r\n                            }\r\n                            return ajaxResponse;\r\n                        });\r\n                        var properties = void 0;\r\n                        try {\r\n                            if (!!_addRequestContext) {\r\n                                properties = _addRequestContext({ status: xhr.status, xhr: xhr });\r\n                            }\r\n                        }\r\n                        catch (e) {\r\n                            _throwInternalWarning(_self, _InternalMessageId.FailedAddingCustomDefinedRequestContext, \"Failed to add custom defined request context as configured call back may missing a null check.\");\r\n                        }\r\n                        if (dependency) {\r\n                            if (properties !== undefined) {\r\n                                dependency.properties = __assign(__assign({}, dependency.properties), properties);\r\n                            }\r\n                            _self[strTrackDependencyDataInternal](dependency);\r\n                        }\r\n                        else {\r\n                            _reportXhrError(null, {\r\n                                requestSentTime: ajaxData.requestSentTime,\r\n                                responseFinishedTime: ajaxData.responseFinishedTime\r\n                            });\r\n                        }\r\n                    }\r\n                    finally {\r\n                        // cleanup telemetry data\r\n                        try {\r\n                            xhr[strAjaxData] = null;\r\n                        }\r\n                        catch (e) {\r\n                            // May throw in environments that prevent extension or freeze xhr\r\n                        }\r\n                    }\r\n                }, function (e) {\r\n                    _reportXhrError(e, null);\r\n                });\r\n            }\r\n            function _getAjaxCorrelationContext(xhr) {\r\n                try {\r\n                    var responseHeadersString = xhr.getAllResponseHeaders();\r\n                    if (responseHeadersString !== null) {\r\n                        var index = _indexOf(responseHeadersString.toLowerCase(), RequestHeaders.requestContextHeaderLowerCase);\r\n                        if (index !== -1) {\r\n                            var responseHeader = xhr.getResponseHeader(RequestHeaders.requestContextHeader);\r\n                            return CorrelationIdHelper.getCorrelationContext(responseHeader);\r\n                        }\r\n                    }\r\n                }\r\n                catch (e) {\r\n                    _throwInternalWarning(_self, _InternalMessageId.FailedMonitorAjaxGetCorrelationHeader, \"Failed to get Request-Context correlation header as it may be not included in the response or not accessible.\", {\r\n                        ajaxDiagnosticsMessage: _getFailedAjaxDiagnosticsMessage(xhr),\r\n                        exception: dumpObj(e)\r\n                    });\r\n                }\r\n            }\r\n            function _createMarkId(type, ajaxData) {\r\n                if (ajaxData.requestUrl && _markPrefix && _enableAjaxPerfTracking) {\r\n                    var performance_1 = getPerformance();\r\n                    if (performance_1 && isFunction(performance_1.mark)) {\r\n                        _markCount++;\r\n                        var markId = _markPrefix + type + \"#\" + _markCount;\r\n                        performance_1.mark(markId);\r\n                        var entries = performance_1.getEntriesByName(markId);\r\n                        if (entries && entries.length === 1) {\r\n                            ajaxData.perfMark = entries[0];\r\n                        }\r\n                    }\r\n                }\r\n            }\r\n            function _findPerfResourceEntry(initiatorType, ajaxData, trackCallback, reportError) {\r\n                var perfMark = ajaxData.perfMark;\r\n                var performance = getPerformance();\r\n                var maxAttempts = _config.maxAjaxPerfLookupAttempts;\r\n                var retryDelay = _config.ajaxPerfLookupDelay;\r\n                var requestUrl = ajaxData.requestUrl;\r\n                var attempt = 0;\r\n                (function locateResourceTiming() {\r\n                    try {\r\n                        if (performance && perfMark) {\r\n                            attempt++;\r\n                            var perfTiming = null;\r\n                            var entries = performance.getEntries();\r\n                            for (var lp = entries.length - 1; lp >= 0; lp--) {\r\n                                var entry = entries[lp];\r\n                                if (entry) {\r\n                                    if (entry.entryType === \"resource\") {\r\n                                        if (entry.initiatorType === initiatorType &&\r\n                                            (_indexOf(entry.name, requestUrl) !== -1 || _indexOf(requestUrl, entry.name) !== -1)) {\r\n                                            perfTiming = entry;\r\n                                        }\r\n                                    }\r\n                                    else if (entry.entryType === \"mark\" && entry.name === perfMark.name) {\r\n                                        // We hit the start event\r\n                                        ajaxData.perfTiming = perfTiming;\r\n                                        break;\r\n                                    }\r\n                                    if (entry.startTime < perfMark.startTime - 1000) {\r\n                                        // Fallback to try and reduce the time spent looking for the perf entry\r\n                                        break;\r\n                                    }\r\n                                }\r\n                            }\r\n                        }\r\n                        if (!perfMark || // - we don't have a perfMark or\r\n                            ajaxData.perfTiming || // - we have not found the perf entry or\r\n                            attempt >= maxAttempts || // - we have tried too many attempts or\r\n                            ajaxData.async === false) { // - this is a sync request\r\n                            if (perfMark && isFunction(performance.clearMarks)) {\r\n                                // Remove the mark so we don't fill up the performance resources too much\r\n                                performance.clearMarks(perfMark.name);\r\n                            }\r\n                            ajaxData.perfAttempts = attempt;\r\n                            // just continue and report the track event\r\n                            trackCallback();\r\n                        }\r\n                        else {\r\n                            // We need to wait for the browser to populate the window.performance entry\r\n                            // This needs to be at least 1ms as waiting <= 1 (on firefox) is not enough time for fetch or xhr,\r\n                            // this is a scheduling issue for the browser implementation\r\n                            setTimeout(locateResourceTiming, retryDelay);\r\n                        }\r\n                    }\r\n                    catch (e) {\r\n                        reportError(e);\r\n                    }\r\n                })();\r\n            }\r\n            function _createFetchRecord(input, init) {\r\n                var traceID = (_context && _context.telemetryTrace && _context.telemetryTrace.traceID) || generateW3CId();\r\n                var spanID = generateW3CId().substr(0, 16);\r\n                var ajaxData = new ajaxRecord(traceID, spanID, _self[strDiagLog]());\r\n                ajaxData.requestSentTime = dateTimeUtilsNow();\r\n                ajaxData.errorStatusText = _enableAjaxErrorStatusText;\r\n                if (input instanceof Request) {\r\n                    ajaxData.requestUrl = input ? input.url : \"\";\r\n                }\r\n                else {\r\n                    ajaxData.requestUrl = input;\r\n                }\r\n                var method = \"GET\";\r\n                if (init && init.method) {\r\n                    method = init.method;\r\n                }\r\n                else if (input && input instanceof Request) {\r\n                    method = input.method;\r\n                }\r\n                ajaxData.method = method;\r\n                var requestHeaders = {};\r\n                if (_enableRequestHeaderTracking) {\r\n                    var headers = new Headers((init ? init.headers : 0) || (input instanceof Request ? (input.headers || {}) : {}));\r\n                    headers.forEach(function (value, key) {\r\n                        if (_canIncludeHeaders(key)) {\r\n                            requestHeaders[key] = value;\r\n                        }\r\n                    });\r\n                }\r\n                ajaxData.requestHeaders = requestHeaders;\r\n                _createMarkId(\"fetch\", ajaxData);\r\n                return ajaxData;\r\n            }\r\n            function _getFailedFetchDiagnosticsMessage(input) {\r\n                var result = \"\";\r\n                try {\r\n                    if (!isNullOrUndefined(input)) {\r\n                        if (typeof (input) === \"string\") {\r\n                            result += \"(url: '\" + input + \"')\";\r\n                        }\r\n                        else {\r\n                            result += \"(url: '\" + input.url + \"')\";\r\n                        }\r\n                    }\r\n                }\r\n                catch (e) {\r\n                    _throwInternalCritical(_self, _InternalMessageId.FailedMonitorAjaxOpen, \"Failed to grab failed fetch diagnostics message\", { exception: dumpObj(e) });\r\n                }\r\n                return result;\r\n            }\r\n            function _reportFetchMetrics(callDetails, status, input, response, ajaxData, getResponse, properties) {\r\n                if (!ajaxData) {\r\n                    return;\r\n                }\r\n                function _reportFetchError(msgId, e, failedProps) {\r\n                    var errorProps = failedProps || {};\r\n                    errorProps[\"fetchDiagnosticsMessage\"] = _getFailedFetchDiagnosticsMessage(input);\r\n                    if (e) {\r\n                        errorProps[\"exception\"] = dumpObj(e);\r\n                    }\r\n                    _throwInternalWarning(_self, msgId, \"Failed to calculate the duration of the fetch call, monitoring data for this fetch call won't be sent.\", errorProps);\r\n                }\r\n                ajaxData.responseFinishedTime = dateTimeUtilsNow();\r\n                ajaxData.status = status;\r\n                _findPerfResourceEntry(\"fetch\", ajaxData, function () {\r\n                    var dependency = ajaxData.CreateTrackItem(\"Fetch\", _enableRequestHeaderTracking, getResponse);\r\n                    var properties;\r\n                    try {\r\n                        if (!!_addRequestContext) {\r\n                            properties = _addRequestContext({ status: status, request: input, response: response });\r\n                        }\r\n                    }\r\n                    catch (e) {\r\n                        _throwInternalWarning(_self, _InternalMessageId.FailedAddingCustomDefinedRequestContext, \"Failed to add custom defined request context as configured call back may missing a null check.\");\r\n                    }\r\n                    if (dependency) {\r\n                        if (properties !== undefined) {\r\n                            dependency.properties = __assign(__assign({}, dependency.properties), properties);\r\n                        }\r\n                        _self[strTrackDependencyDataInternal](dependency);\r\n                    }\r\n                    else {\r\n                        _reportFetchError(_InternalMessageId.FailedMonitorAjaxDur, null, {\r\n                            requestSentTime: ajaxData.requestSentTime,\r\n                            responseFinishedTime: ajaxData.responseFinishedTime\r\n                        });\r\n                    }\r\n                }, function (e) {\r\n                    _reportFetchError(_InternalMessageId.FailedMonitorAjaxGetCorrelationHeader, e, null);\r\n                });\r\n            }\r\n            function _getFetchCorrelationContext(response) {\r\n                if (response && response.headers) {\r\n                    try {\r\n                        var responseHeader = response.headers.get(RequestHeaders.requestContextHeader);\r\n                        return CorrelationIdHelper.getCorrelationContext(responseHeader);\r\n                    }\r\n                    catch (e) {\r\n                        _throwInternalWarning(_self, _InternalMessageId.FailedMonitorAjaxGetCorrelationHeader, \"Failed to get Request-Context correlation header as it may be not included in the response or not accessible.\", {\r\n                            fetchDiagnosticsMessage: _getFailedFetchDiagnosticsMessage(response),\r\n                            exception: dumpObj(e)\r\n                        });\r\n                    }\r\n                }\r\n            }\r\n        });\r\n        return _this;\r\n    }\r\n    AjaxMonitor.getDefaultConfig = function () {\r\n        var config = {\r\n            maxAjaxCallsPerView: 500,\r\n            disableAjaxTracking: false,\r\n            disableFetchTracking: true,\r\n            excludeRequestFromAutoTrackingPatterns: undefined,\r\n            disableCorrelationHeaders: false,\r\n            distributedTracingMode: DistributedTracingModes.AI_AND_W3C,\r\n            correlationHeaderExcludedDomains: [\r\n                \"*.blob.core.windows.net\",\r\n                \"*.blob.core.chinacloudapi.cn\",\r\n                \"*.blob.core.cloudapi.de\",\r\n                \"*.blob.core.usgovcloudapi.net\"\r\n            ],\r\n            correlationHeaderDomains: undefined,\r\n            correlationHeaderExcludePatterns: undefined,\r\n            appId: undefined,\r\n            enableCorsCorrelation: false,\r\n            enableRequestHeaderTracking: false,\r\n            enableResponseHeaderTracking: false,\r\n            enableAjaxErrorStatusText: false,\r\n            enableAjaxPerfTracking: false,\r\n            maxAjaxPerfLookupAttempts: 3,\r\n            ajaxPerfLookupDelay: 25,\r\n            ignoreHeaders: [\r\n                \"Authorization\",\r\n                \"X-API-Key\",\r\n                \"WWW-Authenticate\"\r\n            ],\r\n            addRequestContext: undefined\r\n        };\r\n        return config;\r\n    };\r\n    AjaxMonitor.getEmptyConfig = function () {\r\n        var emptyConfig = this.getDefaultConfig();\r\n        objForEachKey(emptyConfig, function (value) {\r\n            emptyConfig[value] = undefined;\r\n        });\r\n        return emptyConfig;\r\n    };\r\n    AjaxMonitor.prototype.initialize = function (config, core, extensions, pluginChain) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    AjaxMonitor.prototype.teardown = function () {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    AjaxMonitor.prototype.processTelemetry = function (item, itemCtx) {\r\n        this.processNext(item, itemCtx);\r\n    };\r\n    /**\r\n     * Logs dependency call\r\n     * @param dependencyData dependency data object\r\n     */\r\n    AjaxMonitor.prototype.trackDependencyData = function (dependency, properties) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    AjaxMonitor.prototype.includeCorrelationHeaders = function (ajaxData, input, init, xhr) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    /**\r\n     * Protected function to allow sub classes the chance to add additional properties to the dependency event\r\n     * before it's sent. This function calls track, so sub-classes must call this function after they have\r\n     * populated their properties.\r\n     * @param dependencyData dependency data object\r\n     */\r\n    AjaxMonitor.prototype.trackDependencyDataInternal = function (dependency, properties, systemProperties) {\r\n        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging\r\n    };\r\n    AjaxMonitor.identifier = \"AjaxDependencyPlugin\";\r\n    return AjaxMonitor;\r\n}(BaseTelemetryPlugin));\r\nexport { AjaxMonitor };\r\n//# sourceMappingURL=ajax.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { DEFAULT_BREEZE_ENDPOINT } from \"./Constants\";\r\nimport { arrReduce, objKeys } from \"@microsoft/applicationinsights-core-js\";\r\nvar _FIELDS_SEPARATOR = \";\";\r\nvar _FIELD_KEY_VALUE_SEPARATOR = \"=\";\r\nexport function parseConnectionString(connectionString) {\r\n    if (!connectionString) {\r\n        return {};\r\n    }\r\n    var kvPairs = connectionString.split(_FIELDS_SEPARATOR);\r\n    var result = arrReduce(kvPairs, function (fields, kv) {\r\n        var kvParts = kv.split(_FIELD_KEY_VALUE_SEPARATOR);\r\n        if (kvParts.length === 2) { // only save fields with valid formats\r\n            var key = kvParts[0].toLowerCase();\r\n            var value = kvParts[1];\r\n            fields[key] = value;\r\n        }\r\n        return fields;\r\n    }, {});\r\n    if (objKeys(result).length > 0) {\r\n        // this is a valid connection string, so parse the results\r\n        if (result.endpointsuffix) {\r\n            // use endpoint suffix where overrides are not provided\r\n            var locationPrefix = result.location ? result.location + \".\" : \"\";\r\n            result.ingestionendpoint = result.ingestionendpoint || (\"https://\" + locationPrefix + \"dc.\" + result.endpointsuffix);\r\n        }\r\n        // apply the default endpoints\r\n        result.ingestionendpoint = result.ingestionendpoint || DEFAULT_BREEZE_ENDPOINT;\r\n    }\r\n    return result;\r\n}\r\nexport var ConnectionStringParser = {\r\n    parse: parseConnectionString\r\n};\r\n//# sourceMappingURL=ConnectionStringParser.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { isNullOrUndefined } from \"@microsoft/applicationinsights-core-js\";\r\nvar ConfigurationManager = /** @class */ (function () {\r\n    function ConfigurationManager() {\r\n    }\r\n    ConfigurationManager.getConfig = function (config, field, identifier, defaultValue) {\r\n        if (defaultValue === void 0) { defaultValue = false; }\r\n        var configValue;\r\n        if (identifier && config.extensionConfig && config.extensionConfig[identifier] && !isNullOrUndefined(config.extensionConfig[identifier][field])) {\r\n            configValue = config.extensionConfig[identifier][field];\r\n        }\r\n        else {\r\n            configValue = config[field];\r\n        }\r\n        return !isNullOrUndefined(configValue) ? configValue : defaultValue;\r\n    };\r\n    return ConfigurationManager;\r\n}());\r\nexport { ConfigurationManager };\r\n//# sourceMappingURL=IConfig.js.map","// Copyright (c) Microsoft Corporation. All rights reserved.\r\n// Licensed under the MIT License.\r\nimport { AppInsightsCore, LoggingSeverity, _InternalMessageId, hasWindow, hasDocument, isReactNative, doPerf, objForEachKey, proxyAssign, arrForEach, isString, isFunction, isNullOrUndefined, isArray, throwError, addPageUnloadEventListener, addPageHideEventListener } from \"@microsoft/applicationinsights-core-js\";\r\nimport { ApplicationInsights } from \"@microsoft/applicationinsights-analytics-js\";\r\nimport { Sender } from \"@microsoft/applicationinsights-channel-js\";\r\nimport { PropertiesPlugin } from \"@microsoft/applicationinsights-properties-js\";\r\nimport { AjaxPlugin as DependenciesPlugin } from \"@microsoft/applicationinsights-dependencies-js\";\r\nimport { Util, CorrelationIdHelper, UrlHelper, DateTimeUtils, ConnectionStringParser, RequestHeaders, DisabledPropertyName, ProcessLegacy, SampleRate, HttpMethod, DEFAULT_BREEZE_ENDPOINT, AIData, AIBase, Envelope, Event, Exception, Metric, PageView, PageViewData, RemoteDependencyData, Trace, PageViewPerformance, Data, SeverityLevel, ConfigurationManager, ContextTagKeys, DataSanitizer, TelemetryItemCreator, CtxTagKeys, Extensions, DistributedTracingModes, PropertiesPluginIdentifier, BreezeChannelIdentifier, AnalyticsPluginIdentifier, parseConnectionString } from \"@microsoft/applicationinsights-common\";\r\n\"use strict\";\r\nvar _internalSdkSrc;\r\n// This is an exclude list of properties that should not be updated during initialization\r\n// They include a combination of private and internal property names\r\nvar _ignoreUpdateSnippetProperties = [\r\n    \"snippet\", \"dependencies\", \"properties\", \"_snippetVersion\", \"appInsightsNew\", \"getSKUDefaults\"\r\n];\r\n// Re-exposing the Common classes as Telemetry, the list was taken by reviewing the generated code for the build while using\r\n// the previous configuration :-\r\n// import * as Common from \"@microsoft/applicationinsights-common\"\r\n// export const Telemetry = Common;\r\nvar fieldType = {\r\n    Default: 0 /* Default */,\r\n    Required: 1 /* Required */,\r\n    Array: 2 /* Array */,\r\n    Hidden: 4 /* Hidden */\r\n};\r\n/**\r\n * Telemetry type classes, e.g. PageView, Exception, etc\r\n */\r\nexport var Telemetry = {\r\n    __proto__: null,\r\n    PropertiesPluginIdentifier: PropertiesPluginIdentifier,\r\n    BreezeChannelIdentifier: BreezeChannelIdentifier,\r\n    AnalyticsPluginIdentifier: AnalyticsPluginIdentifier,\r\n    Util: Util,\r\n    CorrelationIdHelper: CorrelationIdHelper,\r\n    UrlHelper: UrlHelper,\r\n    DateTimeUtils: DateTimeUtils,\r\n    ConnectionStringParser: ConnectionStringParser,\r\n    FieldType: fieldType,\r\n    RequestHeaders: RequestHeaders,\r\n    DisabledPropertyName: DisabledPropertyName,\r\n    ProcessLegacy: ProcessLegacy,\r\n    SampleRate: SampleRate,\r\n    HttpMethod: HttpMethod,\r\n    DEFAULT_BREEZE_ENDPOINT: DEFAULT_BREEZE_ENDPOINT,\r\n    AIData: AIData,\r\n    AIBase: AIBase,\r\n    Envelope: Envelope,\r\n    Event: Event,\r\n    Exception: Exception,\r\n    Metric: Metric,\r\n    PageView: PageView,\r\n    PageViewData: PageViewData,\r\n    RemoteDependencyData: RemoteDependencyData,\r\n    Trace: Trace,\r\n    PageViewPerformance: PageViewPerformance,\r\n    Data: Data,\r\n    SeverityLevel: SeverityLevel,\r\n    ConfigurationManager: ConfigurationManager,\r\n    ContextTagKeys: ContextTagKeys,\r\n    DataSanitizer: DataSanitizer,\r\n    TelemetryItemCreator: TelemetryItemCreator,\r\n    CtxTagKeys: CtxTagKeys,\r\n    Extensions: Extensions,\r\n    DistributedTracingModes: DistributedTracingModes\r\n};\r\n/**\r\n * Application Insights API\r\n * @class Initialization\r\n * @implements {IApplicationInsights}\r\n */\r\nvar Initialization = /** @class */ (function () {\r\n    function Initialization(snippet) {\r\n        var _self = this;\r\n        // initialize the queue and config in case they are undefined\r\n        _self._snippetVersion = \"\" + (snippet.sv || snippet.version || \"\");\r\n        snippet.queue = snippet.queue || [];\r\n        snippet.version = snippet.version || 2.0; // Default to new version\r\n        var config = snippet.config || {};\r\n        if (config.connectionString) {\r\n            var cs = parseConnectionString(config.connectionString);\r\n            var ingest = cs.ingestionendpoint;\r\n            config.endpointUrl = ingest ? ingest + \"/v2/track\" : config.endpointUrl; // only add /v2/track when from connectionstring\r\n            config.instrumentationKey = cs.instrumentationkey || config.instrumentationKey;\r\n        }\r\n        _self.appInsights = new ApplicationInsights();\r\n        _self.properties = new PropertiesPlugin();\r\n        _self.dependencies = new DependenciesPlugin();\r\n        _self.core = new AppInsightsCore();\r\n        _self._sender = new Sender();\r\n        _self.snippet = snippet;\r\n        _self.config = config;\r\n        _self.getSKUDefaults();\r\n    }\r\n    // Analytics Plugin\r\n    /**\r\n     * Get the current cookie manager for this instance\r\n     */\r\n    Initialization.prototype.getCookieMgr = function () {\r\n        return this.appInsights.getCookieMgr();\r\n    };\r\n    /**\r\n     * Log a user action or other occurrence.\r\n     * @param {IEventTelemetry} event\r\n     * @param {ICustomProperties} [customProperties]\r\n     * @memberof Initialization\r\n     */\r\n    Initialization.prototype.trackEvent = function (event, customProperties) {\r\n        this.appInsights.trackEvent(event, customProperties);\r\n    };\r\n    /**\r\n     * Logs that a page, or similar container was displayed to the user.\r\n     * @param {IPageViewTelemetry} pageView\r\n     * @memberof Initialization\r\n     */\r\n    Initialization.prototype.trackPageView = function (pageView) {\r\n        var inPv = pageView || {};\r\n        this.appInsights.trackPageView(inPv);\r\n    };\r\n    /**\r\n     * Log a bag of performance information via the customProperties field.\r\n     * @param {IPageViewPerformanceTelemetry} pageViewPerformance\r\n     * @memberof Initialization\r\n     */\r\n    Initialization.prototype.trackPageViewPerformance = function (pageViewPerformance) {\r\n        var inPvp = pageViewPerformance || {};\r\n        this.appInsights.trackPageViewPerformance(inPvp);\r\n    };\r\n    /**\r\n     * Log an exception that you have caught.\r\n     * @param {IExceptionTelemetry} exception\r\n     * @param {{[key: string]: any}} customProperties   Additional data used to filter pages and metrics in the portal. Defaults to empty.\r\n     * @memberof Initialization\r\n     */\r\n    Initialization.prototype.trackException = function (exception, customProperties) {\r\n        if (exception && !exception.exception && exception.error) {\r\n            exception.exception = exception.error;\r\n        }\r\n        this.appInsights.trackException(exception, customProperties);\r\n    };\r\n    /**\r\n     * Manually send uncaught exception telemetry. This method is automatically triggered\r\n     * on a window.onerror event.\r\n     * @param {IAutoExceptionTelemetry} exception\r\n     * @memberof Initialization\r\n     */\r\n    Initialization.prototype._onerror = function (exception) {\r\n        this.appInsights._onerror(exception);\r\n    };\r\n    /**\r\n     * Log a diagnostic scenario such entering or leaving a function.\r\n     * @param {ITraceTelemetry} trace\r\n     * @param {ICustomProperties} [customProperties]\r\n     * @memberof Initialization\r\n     */\r\n    Initialization.prototype.trackTrace = function (trace, customProperties) {\r\n        this.appInsights.trackTrace(trace, customProperties);\r\n    };\r\n    /**\r\n     * Log a numeric value that is not associated with a specific event. Typically used\r\n     * to send regular reports of performance indicators.\r\n     *\r\n     * To send a single measurement, just use the `name` and `average` fields\r\n     * of {@link IMetricTelemetry}.\r\n     *\r\n     * If you take measurements frequently, you can reduce the telemetry bandwidth by\r\n     * aggregating multiple measurements and sending the resulting average and modifying\r\n     * the `sampleCount` field of {@link IMetricTelemetry}.\r\n     * @param {IMetricTelemetry} metric input object argument. Only `name` and `average` are mandatory.\r\n     * @param {ICustomProperties} [customProperties]\r\n     * @memberof Initialization\r\n     */\r\n    Initialization.prototype.trackMetric = function (metric, customProperties) {\r\n        this.appInsights.trackMetric(metric, customProperties);\r\n    };\r\n    /**\r\n     * Starts the timer for tracking a page load time. Use this instead of `trackPageView` if you want to control when the page view timer starts and stops,\r\n     * but don't want to calculate the duration yourself. This method doesn't send any telemetry. Call `stopTrackPage` to log the end of the page view\r\n     * and send the event.\r\n     * @param name A string that idenfities this item, unique within this HTML document. Defaults to the document title.\r\n     */\r\n    Initialization.prototype.startTrackPage = function (name) {\r\n        this.appInsights.startTrackPage(name);\r\n    };\r\n    /**\r\n     * Stops the timer that was started by calling `startTrackPage` and sends the pageview load time telemetry with the specified properties and measurements.\r\n     * The duration of the page view will be the time between calling `startTrackPage` and `stopTrackPage`.\r\n     * @param   name  The string you used as the name in startTrackPage. Defaults to the document title.\r\n     * @param   url   String - a relative or absolute URL that identifies the page or other item. Defaults to the window location.\r\n     * @param   properties  map[string, string] - additional data used to filter pages and metrics in the portal. Defaults to empty.\r\n     * @param   measurements    map[string, number] - metrics associated with this page, displayed in Metrics Explorer on the portal. Defaults to empty.\r\n     */\r\n    Initialization.prototype.stopTrackPage = function (name, url, customProperties, measurements) {\r\n        this.appInsights.stopTrackPage(name, url, customProperties, measurements);\r\n    };\r\n    Initialization.prototype.startTrackEvent = function (name) {\r\n        this.appInsights.startTrackEvent(name);\r\n    };\r\n    /**\r\n     * Log an extended event that you started timing with `startTrackEvent`.\r\n     * @param   name    The string you used to identify this event in `startTrackEvent`.\r\n     * @param   properties  map[string, string] - additional data used to filter events and metrics in the portal. Defaults to empty.\r\n     * @param   measurements    map[string, number] - metrics associated with this event, displayed in Metrics Explorer on the portal. Defaults to empty.\r\n     */\r\n    Initialization.prototype.stopTrackEvent = function (name, properties, measurements) {\r\n        this.appInsights.stopTrackEvent(name, properties, measurements); // Todo: Fix to pass measurements once type is updated\r\n    };\r\n    Initialization.prototype.addTelemetryInitializer = function (telemetryInitializer) {\r\n        return this.appInsights.addTelemetryInitializer(telemetryInitializer);\r\n    };\r\n    // Properties Plugin\r\n    /**\r\n     * Set the authenticated user id and the account id. Used for identifying a specific signed-in user. Parameters must not contain whitespace or ,;=|\r\n     *\r\n     * The method will only set the `authenticatedUserId` and `accountId` in the current page view. To set them for the whole session, you should set `storeInCookie = true`\r\n     * @param {string} authenticatedUserId\r\n     * @param {string} [accountId]\r\n     * @param {boolean} [storeInCookie=false]\r\n     * @memberof Initialization\r\n     */\r\n    Initialization.prototype.setAuthenticatedUserContext = function (authenticatedUserId, accountId, storeInCookie) {\r\n        if (storeInCookie === void 0) { storeInCookie = false; }\r\n        this.properties.context.user.setAuthenticatedUserContext(authenticatedUserId, accountId, storeInCookie);\r\n    };\r\n    /**\r\n     * Clears the authenticated user id and account id. The associated cookie is cleared, if present.\r\n     * @memberof Initialization\r\n     */\r\n    Initialization.prototype.clearAuthenticatedUserContext = function () {\r\n        this.properties.context.user.clearAuthenticatedUserContext();\r\n    };\r\n    // Dependencies Plugin\r\n    /**\r\n     * Log a dependency call (e.g. ajax)\r\n     * @param {IDependencyTelemetry} dependency\r\n     * @memberof Initialization\r\n     */\r\n    Initialization.prototype.trackDependencyData = function (dependency) {\r\n        this.dependencies.trackDependencyData(dependency);\r\n    };\r\n    // Misc\r\n    /**\r\n     * Manually trigger an immediate send of all telemetry still in the buffer.\r\n     * @param {boolean} [async=true]\r\n     * @memberof Initialization\r\n     */\r\n    Initialization.prototype.flush = function (async) {\r\n        var _this = this;\r\n        if (async === void 0) { async = true; }\r\n        doPerf(this.core, function () { return \"AISKU.flush\"; }, function () {\r\n            arrForEach(_this.core.getTransmissionControls(), function (channels) {\r\n                arrForEach(channels, function (channel) {\r\n                    channel.flush(async);\r\n                });\r\n            });\r\n        }, null, async);\r\n    };\r\n    /**\r\n     * Manually trigger an immediate send of all telemetry still in the buffer using beacon Sender.\r\n     * Fall back to xhr sender if beacon is not supported.\r\n     * @param {boolean} [async=true]\r\n     * @memberof Initialization\r\n     */\r\n    Initialization.prototype.onunloadFlush = function (async) {\r\n        if (async === void 0) { async = true; }\r\n        arrForEach(this.core.getTransmissionControls(), function (channels) {\r\n            arrForEach(channels, function (channel) {\r\n                if (channel.onunloadFlush) {\r\n                    channel.onunloadFlush();\r\n                }\r\n                else {\r\n                    channel.flush(async);\r\n                }\r\n            });\r\n        });\r\n    };\r\n    /**\r\n     * Initialize this instance of ApplicationInsights\r\n     * @returns {IApplicationInsights}\r\n     * @memberof Initialization\r\n     */\r\n    Initialization.prototype.loadAppInsights = function (legacyMode, logger, notificationManager) {\r\n        var _this = this;\r\n        if (legacyMode === void 0) { legacyMode = false; }\r\n        var _self = this;\r\n        function _updateSnippetProperties(snippet) {\r\n            if (snippet) {\r\n                var snippetVer = \"\";\r\n                if (!isNullOrUndefined(_self._snippetVersion)) {\r\n                    snippetVer += _self._snippetVersion;\r\n                }\r\n                if (legacyMode) {\r\n                    snippetVer += \".lg\";\r\n                }\r\n                if (_self.context && _self.context.internal) {\r\n                    _self.context.internal.snippetVer = snippetVer || \"-\";\r\n                }\r\n                // apply updated properties to the global instance (snippet)\r\n                objForEachKey(_self, function (field, value) {\r\n                    if (isString(field) &&\r\n                        !isFunction(value) &&\r\n                        field && field[0] !== \"_\" && // Don't copy \"internal\" values\r\n                        _ignoreUpdateSnippetProperties.indexOf(field) === -1) {\r\n                        snippet[field] = value;\r\n                    }\r\n                });\r\n            }\r\n        }\r\n        // dont allow additional channels/other extensions for legacy mode; legacy mode is only to allow users to switch with no code changes!\r\n        if (legacyMode && _self.config.extensions && _self.config.extensions.length > 0) {\r\n            throwError(\"Extensions not allowed in legacy mode\");\r\n        }\r\n        doPerf(_self.core, function () { return \"AISKU.loadAppInsights\"; }, function () {\r\n            var extensions = [];\r\n            extensions.push(_self._sender);\r\n            extensions.push(_self.properties);\r\n            extensions.push(_self.dependencies);\r\n            extensions.push(_self.appInsights);\r\n            // initialize core\r\n            _self.core.initialize(_self.config, extensions, logger, notificationManager);\r\n            _self.context = _self.properties.context;\r\n            if (_internalSdkSrc && _self.context) {\r\n                _self.context.internal.sdkSrc = _internalSdkSrc;\r\n            }\r\n            _updateSnippetProperties(_self.snippet);\r\n            // Empty queue of all api calls logged prior to sdk download\r\n            _self.emptyQueue();\r\n            _self.pollInternalLogs();\r\n            _self.addHousekeepingBeforeUnload(_this);\r\n        });\r\n        return _self;\r\n    };\r\n    /**\r\n     * Overwrite the lazy loaded fields of global window snippet to contain the\r\n     * actual initialized API methods\r\n     * @param {Snippet} snippet\r\n     * @memberof Initialization\r\n     */\r\n    Initialization.prototype.updateSnippetDefinitions = function (snippet) {\r\n        // apply full appInsights to the global instance\r\n        // Note: This must be called before loadAppInsights is called\r\n        proxyAssign(snippet, this, function (name) {\r\n            // Not excluding names prefixed with \"_\" as we need to proxy some functions like _onError\r\n            return name && _ignoreUpdateSnippetProperties.indexOf(name) === -1;\r\n        });\r\n    };\r\n    /**\r\n     * Call any functions that were queued before the main script was loaded\r\n     * @memberof Initialization\r\n     */\r\n    Initialization.prototype.emptyQueue = function () {\r\n        var _self = this;\r\n        // call functions that were queued before the main script was loaded\r\n        try {\r\n            if (isArray(_self.snippet.queue)) {\r\n                // note: do not check length in the for-loop conditional in case something goes wrong and the stub methods are not overridden.\r\n                var length_1 = _self.snippet.queue.length;\r\n                for (var i = 0; i < length_1; i++) {\r\n                    var call = _self.snippet.queue[i];\r\n                    call();\r\n                }\r\n                _self.snippet.queue = undefined;\r\n                delete _self.snippet.queue;\r\n            }\r\n        }\r\n        catch (exception) {\r\n            var properties = {};\r\n            if (exception && isFunction(exception.toString)) {\r\n                properties.exception = exception.toString();\r\n            }\r\n            // need from core\r\n            // Microsoft.ApplicationInsights._InternalLogging.throwInternal(\r\n            //     LoggingSeverity.WARNING,\r\n            //     _InternalMessageId.FailedToSendQueuedTelemetry,\r\n            //     \"Failed to send queued telemetry\",\r\n            //     properties);\r\n        }\r\n    };\r\n    Initialization.prototype.pollInternalLogs = function () {\r\n        this.core.pollInternalLogs();\r\n    };\r\n    Initialization.prototype.stopPollingInternalLogs = function () {\r\n        this.core.stopPollingInternalLogs();\r\n    };\r\n    Initialization.prototype.addHousekeepingBeforeUnload = function (appInsightsInstance) {\r\n        // Add callback to push events when the user navigates away\r\n        if (hasWindow() || hasDocument()) {\r\n            var performHousekeeping = function () {\r\n                // Adds the ability to flush all data before the page unloads.\r\n                // Note: This approach tries to push a sync request with all the pending events onbeforeunload.\r\n                // Firefox does not respect this.Other browsers DO push out the call with < 100% hit rate.\r\n                // Telemetry here will help us analyze how effective this approach is.\r\n                // Another approach would be to make this call sync with a acceptable timeout to reduce the\r\n                // impact on user experience.\r\n                // appInsightsInstance.context._sender.triggerSend();\r\n                appInsightsInstance.onunloadFlush(false);\r\n                // Back up the current session to local storage\r\n                // This lets us close expired sessions after the cookies themselves expire\r\n                arrForEach(appInsightsInstance.appInsights.core[\"_extensions\"], function (ext) {\r\n                    if (ext.identifier === PropertiesPluginIdentifier) {\r\n                        if (ext && ext.context && ext.context._sessionManager) {\r\n                            ext.context._sessionManager.backup();\r\n                        }\r\n                        return -1;\r\n                    }\r\n                });\r\n            };\r\n            var added = false;\r\n            var excludePageUnloadEvents = appInsightsInstance.appInsights.config.disablePageUnloadEvents;\r\n            if (!appInsightsInstance.appInsights.config.disableFlushOnBeforeUnload) {\r\n                // Hook the unload event for the document, window and body to ensure that the client events are flushed to the server\r\n                // As just hooking the window does not always fire (on chrome) for page navigation's.\r\n                added = addPageUnloadEventListener(performHousekeeping, excludePageUnloadEvents);\r\n                // We also need to hook the pagehide and visibilitychange events as not all versions of Safari support load/unload events.\r\n                added = addPageHideEventListener(performHousekeeping, excludePageUnloadEvents) || added;\r\n                // A reactNative app may not have a window and therefore the beforeunload/pagehide events -- so don't\r\n                // log the failure in this case\r\n                if (!added && !isReactNative()) {\r\n                    appInsightsInstance.appInsights.core.logger.throwInternal(LoggingSeverity.CRITICAL, _InternalMessageId.FailedToAddHandlerForOnBeforeUnload, \"Could not add handler for beforeunload and pagehide\");\r\n                }\r\n            }\r\n            if (!added && !appInsightsInstance.appInsights.config.disableFlushOnUnload) {\r\n                // If we didn't add the normal set then attempt to add the pagehide and visibilitychange only\r\n                addPageHideEventListener(performHousekeeping, excludePageUnloadEvents);\r\n            }\r\n        }\r\n    };\r\n    Initialization.prototype.getSender = function () {\r\n        return this._sender;\r\n    };\r\n    Initialization.prototype.getSKUDefaults = function () {\r\n        var _self = this;\r\n        _self.config.diagnosticLogInterval =\r\n            _self.config.diagnosticLogInterval && _self.config.diagnosticLogInterval > 0 ? _self.config.diagnosticLogInterval : 10000;\r\n    };\r\n    return Initialization;\r\n}());\r\nexport { Initialization };\r\n// tslint:disable-next-line\r\n(function () {\r\n    var sdkSrc = null;\r\n    var isModule = false;\r\n    var cdns = [\r\n        \"://js.monitor.azure.com/\",\r\n        \"://az416426.vo.msecnd.net/\"\r\n    ];\r\n    try {\r\n        // Try and determine whether the sdk is being loaded from the CDN\r\n        // currentScript is only valid during initial processing\r\n        var scrpt = (document || {}).currentScript;\r\n        if (scrpt) {\r\n            sdkSrc = scrpt.src;\r\n            // } else {\r\n            //     // We need to update to at least typescript 2.9 for this to work :-(\r\n            //     // Leaving as a stub for now so after we upgrade this breadcrumb is available\r\n            //     let meta = import.meta;\r\n            //     sdkSrc = (meta || {}).url;\r\n            //     isModule = true;\r\n        }\r\n    }\r\n    catch (e) {\r\n        // eslint-disable-next-line no-empty\r\n    }\r\n    if (sdkSrc) {\r\n        try {\r\n            var url = sdkSrc.toLowerCase();\r\n            if (url) {\r\n                var src = \"\";\r\n                for (var idx = 0; idx < cdns.length; idx++) {\r\n                    if (url.indexOf(cdns[idx]) !== -1) {\r\n                        src = \"cdn\" + (idx + 1);\r\n                        if (url.indexOf(\"/scripts/\") === -1) {\r\n                            if (url.indexOf(\"/next/\") !== -1) {\r\n                                src += \"-next\";\r\n                            }\r\n                            else if (url.indexOf(\"/beta/\") !== -1) {\r\n                                src += \"-beta\";\r\n                            }\r\n                        }\r\n                        _internalSdkSrc = src + (isModule ? \".mod\" : \"\");\r\n                        break;\r\n                    }\r\n                }\r\n            }\r\n        }\r\n        catch (e) {\r\n            // eslint-disable-next-line no-empty\r\n        }\r\n    }\r\n})();\r\n//# sourceMappingURL=Initialization.js.map","export default function formControlState(_ref) {\n  var props = _ref.props,\n      states = _ref.states,\n      muiFormControl = _ref.muiFormControl;\n  return states.reduce(function (acc, state) {\n    acc[state] = props[state];\n\n    if (muiFormControl) {\n      if (typeof props[state] === 'undefined') {\n        acc[state] = muiFormControl[state];\n      }\n    }\n\n    return acc;\n  }, {});\n}","import * as React from 'react';\n/**\n * @ignore - internal component.\n */\n\nvar FormControlContext = React.createContext();\n\nif (process.env.NODE_ENV !== 'production') {\n  FormControlContext.displayName = 'FormControlContext';\n}\n\nexport function useFormControl() {\n  return React.useContext(FormControlContext);\n}\nexport default FormControlContext;","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport debounce from '../utils/debounce';\nimport useForkRef from '../utils/useForkRef';\nimport deprecatedPropType from '../utils/deprecatedPropType';\n\nfunction getStyleValue(computedStyle, property) {\n  return parseInt(computedStyle[property], 10) || 0;\n}\n\nvar useEnhancedEffect = typeof window !== 'undefined' ? React.useLayoutEffect : React.useEffect;\nvar styles = {\n  /* Styles applied to the shadow textarea element. */\n  shadow: {\n    // Visibility needed to hide the extra text area on iPads\n    visibility: 'hidden',\n    // Remove from the content flow\n    position: 'absolute',\n    // Ignore the scrollbar width\n    overflow: 'hidden',\n    height: 0,\n    top: 0,\n    left: 0,\n    // Create a new layer, increase the isolation of the computed values\n    transform: 'translateZ(0)'\n  }\n};\nvar TextareaAutosize = /*#__PURE__*/React.forwardRef(function TextareaAutosize(props, ref) {\n  var onChange = props.onChange,\n      rows = props.rows,\n      rowsMax = props.rowsMax,\n      rowsMinProp = props.rowsMin,\n      maxRowsProp = props.maxRows,\n      _props$minRows = props.minRows,\n      minRowsProp = _props$minRows === void 0 ? 1 : _props$minRows,\n      style = props.style,\n      value = props.value,\n      other = _objectWithoutProperties(props, [\"onChange\", \"rows\", \"rowsMax\", \"rowsMin\", \"maxRows\", \"minRows\", \"style\", \"value\"]);\n\n  var maxRows = maxRowsProp || rowsMax;\n  var minRows = rows || rowsMinProp || minRowsProp;\n\n  var _React$useRef = React.useRef(value != null),\n      isControlled = _React$useRef.current;\n\n  var inputRef = React.useRef(null);\n  var handleRef = useForkRef(ref, inputRef);\n  var shadowRef = React.useRef(null);\n  var renders = React.useRef(0);\n\n  var _React$useState = React.useState({}),\n      state = _React$useState[0],\n      setState = _React$useState[1];\n\n  var syncHeight = React.useCallback(function () {\n    var input = inputRef.current;\n    var computedStyle = window.getComputedStyle(input);\n    var inputShallow = shadowRef.current;\n    inputShallow.style.width = computedStyle.width;\n    inputShallow.value = input.value || props.placeholder || 'x';\n\n    if (inputShallow.value.slice(-1) === '\\n') {\n      // Certain fonts which overflow the line height will cause the textarea\n      // to report a different scrollHeight depending on whether the last line\n      // is empty. Make it non-empty to avoid this issue.\n      inputShallow.value += ' ';\n    }\n\n    var boxSizing = computedStyle['box-sizing'];\n    var padding = getStyleValue(computedStyle, 'padding-bottom') + getStyleValue(computedStyle, 'padding-top');\n    var border = getStyleValue(computedStyle, 'border-bottom-width') + getStyleValue(computedStyle, 'border-top-width'); // The height of the inner content\n\n    var innerHeight = inputShallow.scrollHeight - padding; // Measure height of a textarea with a single row\n\n    inputShallow.value = 'x';\n    var singleRowHeight = inputShallow.scrollHeight - padding; // The height of the outer content\n\n    var outerHeight = innerHeight;\n\n    if (minRows) {\n      outerHeight = Math.max(Number(minRows) * singleRowHeight, outerHeight);\n    }\n\n    if (maxRows) {\n      outerHeight = Math.min(Number(maxRows) * singleRowHeight, outerHeight);\n    }\n\n    outerHeight = Math.max(outerHeight, singleRowHeight); // Take the box sizing into account for applying this value as a style.\n\n    var outerHeightStyle = outerHeight + (boxSizing === 'border-box' ? padding + border : 0);\n    var overflow = Math.abs(outerHeight - innerHeight) <= 1;\n    setState(function (prevState) {\n      // Need a large enough difference to update the height.\n      // This prevents infinite rendering loop.\n      if (renders.current < 20 && (outerHeightStyle > 0 && Math.abs((prevState.outerHeightStyle || 0) - outerHeightStyle) > 1 || prevState.overflow !== overflow)) {\n        renders.current += 1;\n        return {\n          overflow: overflow,\n          outerHeightStyle: outerHeightStyle\n        };\n      }\n\n      if (process.env.NODE_ENV !== 'production') {\n        if (renders.current === 20) {\n          console.error(['Material-UI: Too many re-renders. The layout is unstable.', 'TextareaAutosize limits the number of renders to prevent an infinite loop.'].join('\\n'));\n        }\n      }\n\n      return prevState;\n    });\n  }, [maxRows, minRows, props.placeholder]);\n  React.useEffect(function () {\n    var handleResize = debounce(function () {\n      renders.current = 0;\n      syncHeight();\n    });\n    window.addEventListener('resize', handleResize);\n    return function () {\n      handleResize.clear();\n      window.removeEventListener('resize', handleResize);\n    };\n  }, [syncHeight]);\n  useEnhancedEffect(function () {\n    syncHeight();\n  });\n  React.useEffect(function () {\n    renders.current = 0;\n  }, [value]);\n\n  var handleChange = function handleChange(event) {\n    renders.current = 0;\n\n    if (!isControlled) {\n      syncHeight();\n    }\n\n    if (onChange) {\n      onChange(event);\n    }\n  };\n\n  return /*#__PURE__*/React.createElement(React.Fragment, null, /*#__PURE__*/React.createElement(\"textarea\", _extends({\n    value: value,\n    onChange: handleChange,\n    ref: handleRef // Apply the rows prop to get a \"correct\" first SSR paint\n    ,\n    rows: minRows,\n    style: _extends({\n      height: state.outerHeightStyle,\n      // Need a large enough difference to allow scrolling.\n      // This prevents infinite rendering loop.\n      overflow: state.overflow ? 'hidden' : null\n    }, style)\n  }, other)), /*#__PURE__*/React.createElement(\"textarea\", {\n    \"aria-hidden\": true,\n    className: props.className,\n    readOnly: true,\n    ref: shadowRef,\n    tabIndex: -1,\n    style: _extends({}, styles.shadow, style)\n  }));\n});\nprocess.env.NODE_ENV !== \"production\" ? TextareaAutosize.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * Maximum number of rows to display.\n   */\n  maxRows: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * Minimum number of rows to display.\n   */\n  minRows: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * @ignore\n   */\n  onChange: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  placeholder: PropTypes.string,\n\n  /**\n   * Minimum number of rows to display.\n   * @deprecated Use `minRows` instead.\n   */\n  rows: deprecatedPropType(PropTypes.oneOfType([PropTypes.number, PropTypes.string]), 'Use `minRows` instead.'),\n\n  /**\n   * Maximum number of rows to display.\n   * @deprecated Use `maxRows` instead.\n   */\n  rowsMax: deprecatedPropType(PropTypes.oneOfType([PropTypes.number, PropTypes.string]), 'Use `maxRows` instead.'),\n\n  /**\n   * Minimum number of rows to display.\n   * @deprecated Use `minRows` instead.\n   */\n  rowsMin: deprecatedPropType(PropTypes.oneOfType([PropTypes.number, PropTypes.string]), 'Use `minRows` instead.'),\n\n  /**\n   * @ignore\n   */\n  style: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  value: PropTypes.oneOfType([PropTypes.arrayOf(PropTypes.string), PropTypes.number, PropTypes.string])\n} : void 0;\nexport default TextareaAutosize;","// Supports determination of isControlled().\n// Controlled input accepts its current value as a prop.\n//\n// @see https://facebook.github.io/react/docs/forms.html#controlled-components\n// @param value\n// @returns {boolean} true if string (including '') or number (including zero)\nexport function hasValue(value) {\n  return value != null && !(Array.isArray(value) && value.length === 0);\n} // Determine if field is empty or filled.\n// Response determines if label is presented above field or as placeholder.\n//\n// @param obj\n// @param SSR\n// @returns {boolean} False when not present or empty string.\n//                    True when any number or string with length.\n\nexport function isFilled(obj) {\n  var SSR = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n  return obj && (hasValue(obj.value) && obj.value !== '' || SSR && hasValue(obj.defaultValue) && obj.defaultValue !== '');\n} // Determine if an Input is adorned on start.\n// It's corresponding to the left with LTR.\n//\n// @param obj\n// @returns {boolean} False when no adornments.\n//                    True when adorned at the start.\n\nexport function isAdornedStart(obj) {\n  return obj.startAdornment;\n}","import _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport _extends from \"@babel/runtime/helpers/esm/extends\";\nimport { formatMuiErrorMessage as _formatMuiErrorMessage } from \"@material-ui/utils\";\n\n/* eslint-disable jsx-a11y/click-events-have-key-events, jsx-a11y/no-static-element-interactions */\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport { refType } from '@material-ui/utils';\nimport formControlState from '../FormControl/formControlState';\nimport FormControlContext, { useFormControl } from '../FormControl/FormControlContext';\nimport withStyles from '../styles/withStyles';\nimport capitalize from '../utils/capitalize';\nimport useForkRef from '../utils/useForkRef';\nimport TextareaAutosize from '../TextareaAutosize';\nimport { isFilled } from './utils';\nexport var styles = function styles(theme) {\n  var light = theme.palette.type === 'light';\n  var placeholder = {\n    color: 'currentColor',\n    opacity: light ? 0.42 : 0.5,\n    transition: theme.transitions.create('opacity', {\n      duration: theme.transitions.duration.shorter\n    })\n  };\n  var placeholderHidden = {\n    opacity: '0 !important'\n  };\n  var placeholderVisible = {\n    opacity: light ? 0.42 : 0.5\n  };\n  return {\n    '@global': {\n      '@keyframes mui-auto-fill': {},\n      '@keyframes mui-auto-fill-cancel': {}\n    },\n\n    /* Styles applied to the root element. */\n    root: _extends({}, theme.typography.body1, {\n      color: theme.palette.text.primary,\n      lineHeight: '1.1876em',\n      // Reset (19px), match the native input line-height\n      boxSizing: 'border-box',\n      // Prevent padding issue with fullWidth.\n      position: 'relative',\n      cursor: 'text',\n      display: 'inline-flex',\n      alignItems: 'center',\n      '&$disabled': {\n        color: theme.palette.text.disabled,\n        cursor: 'default'\n      }\n    }),\n\n    /* Styles applied to the root element if the component is a descendant of `FormControl`. */\n    formControl: {},\n\n    /* Styles applied to the root element if the component is focused. */\n    focused: {},\n\n    /* Styles applied to the root element if `disabled={true}`. */\n    disabled: {},\n\n    /* Styles applied to the root element if `startAdornment` is provided. */\n    adornedStart: {},\n\n    /* Styles applied to the root element if `endAdornment` is provided. */\n    adornedEnd: {},\n\n    /* Pseudo-class applied to the root element if `error={true}`. */\n    error: {},\n\n    /* Styles applied to the `input` element if `margin=\"dense\"`. */\n    marginDense: {},\n\n    /* Styles applied to the root element if `multiline={true}`. */\n    multiline: {\n      padding: \"\".concat(8 - 2, \"px 0 \").concat(8 - 1, \"px\"),\n      '&$marginDense': {\n        paddingTop: 4 - 1\n      }\n    },\n\n    /* Styles applied to the root element if the color is secondary. */\n    colorSecondary: {},\n\n    /* Styles applied to the root element if `fullWidth={true}`. */\n    fullWidth: {\n      width: '100%'\n    },\n\n    /* Styles applied to the `input` element. */\n    input: {\n      font: 'inherit',\n      letterSpacing: 'inherit',\n      color: 'currentColor',\n      padding: \"\".concat(8 - 2, \"px 0 \").concat(8 - 1, \"px\"),\n      border: 0,\n      boxSizing: 'content-box',\n      background: 'none',\n      height: '1.1876em',\n      // Reset (19px), match the native input line-height\n      margin: 0,\n      // Reset for Safari\n      WebkitTapHighlightColor: 'transparent',\n      display: 'block',\n      // Make the flex item shrink with Firefox\n      minWidth: 0,\n      width: '100%',\n      // Fix IE 11 width issue\n      animationName: 'mui-auto-fill-cancel',\n      animationDuration: '10ms',\n      '&::-webkit-input-placeholder': placeholder,\n      '&::-moz-placeholder': placeholder,\n      // Firefox 19+\n      '&:-ms-input-placeholder': placeholder,\n      // IE 11\n      '&::-ms-input-placeholder': placeholder,\n      // Edge\n      '&:focus': {\n        outline: 0\n      },\n      // Reset Firefox invalid required input style\n      '&:invalid': {\n        boxShadow: 'none'\n      },\n      '&::-webkit-search-decoration': {\n        // Remove the padding when type=search.\n        '-webkit-appearance': 'none'\n      },\n      // Show and hide the placeholder logic\n      'label[data-shrink=false] + $formControl &': {\n        '&::-webkit-input-placeholder': placeholderHidden,\n        '&::-moz-placeholder': placeholderHidden,\n        // Firefox 19+\n        '&:-ms-input-placeholder': placeholderHidden,\n        // IE 11\n        '&::-ms-input-placeholder': placeholderHidden,\n        // Edge\n        '&:focus::-webkit-input-placeholder': placeholderVisible,\n        '&:focus::-moz-placeholder': placeholderVisible,\n        // Firefox 19+\n        '&:focus:-ms-input-placeholder': placeholderVisible,\n        // IE 11\n        '&:focus::-ms-input-placeholder': placeholderVisible // Edge\n\n      },\n      '&$disabled': {\n        opacity: 1 // Reset iOS opacity\n\n      },\n      '&:-webkit-autofill': {\n        animationDuration: '5000s',\n        animationName: 'mui-auto-fill'\n      }\n    },\n\n    /* Styles applied to the `input` element if `margin=\"dense\"`. */\n    inputMarginDense: {\n      paddingTop: 4 - 1\n    },\n\n    /* Styles applied to the `input` element if `multiline={true}`. */\n    inputMultiline: {\n      height: 'auto',\n      resize: 'none',\n      padding: 0\n    },\n\n    /* Styles applied to the `input` element if `type=\"search\"`. */\n    inputTypeSearch: {\n      // Improve type search style.\n      '-moz-appearance': 'textfield',\n      '-webkit-appearance': 'textfield'\n    },\n\n    /* Styles applied to the `input` element if `startAdornment` is provided. */\n    inputAdornedStart: {},\n\n    /* Styles applied to the `input` element if `endAdornment` is provided. */\n    inputAdornedEnd: {},\n\n    /* Styles applied to the `input` element if `hiddenLabel={true}`. */\n    inputHiddenLabel: {}\n  };\n};\nvar useEnhancedEffect = typeof window === 'undefined' ? React.useEffect : React.useLayoutEffect;\n/**\n * `InputBase` contains as few styles as possible.\n * It aims to be a simple building block for creating an input.\n * It contains a load of style reset and some state logic.\n */\n\nvar InputBase = /*#__PURE__*/React.forwardRef(function InputBase(props, ref) {\n  var ariaDescribedby = props['aria-describedby'],\n      autoComplete = props.autoComplete,\n      autoFocus = props.autoFocus,\n      classes = props.classes,\n      className = props.className,\n      color = props.color,\n      defaultValue = props.defaultValue,\n      disabled = props.disabled,\n      endAdornment = props.endAdornment,\n      error = props.error,\n      _props$fullWidth = props.fullWidth,\n      fullWidth = _props$fullWidth === void 0 ? false : _props$fullWidth,\n      id = props.id,\n      _props$inputComponent = props.inputComponent,\n      inputComponent = _props$inputComponent === void 0 ? 'input' : _props$inputComponent,\n      _props$inputProps = props.inputProps,\n      inputPropsProp = _props$inputProps === void 0 ? {} : _props$inputProps,\n      inputRefProp = props.inputRef,\n      margin = props.margin,\n      _props$multiline = props.multiline,\n      multiline = _props$multiline === void 0 ? false : _props$multiline,\n      name = props.name,\n      onBlur = props.onBlur,\n      onChange = props.onChange,\n      onClick = props.onClick,\n      onFocus = props.onFocus,\n      onKeyDown = props.onKeyDown,\n      onKeyUp = props.onKeyUp,\n      placeholder = props.placeholder,\n      readOnly = props.readOnly,\n      renderSuffix = props.renderSuffix,\n      rows = props.rows,\n      rowsMax = props.rowsMax,\n      rowsMin = props.rowsMin,\n      maxRows = props.maxRows,\n      minRows = props.minRows,\n      startAdornment = props.startAdornment,\n      _props$type = props.type,\n      type = _props$type === void 0 ? 'text' : _props$type,\n      valueProp = props.value,\n      other = _objectWithoutProperties(props, [\"aria-describedby\", \"autoComplete\", \"autoFocus\", \"classes\", \"className\", \"color\", \"defaultValue\", \"disabled\", \"endAdornment\", \"error\", \"fullWidth\", \"id\", \"inputComponent\", \"inputProps\", \"inputRef\", \"margin\", \"multiline\", \"name\", \"onBlur\", \"onChange\", \"onClick\", \"onFocus\", \"onKeyDown\", \"onKeyUp\", \"placeholder\", \"readOnly\", \"renderSuffix\", \"rows\", \"rowsMax\", \"rowsMin\", \"maxRows\", \"minRows\", \"startAdornment\", \"type\", \"value\"]);\n\n  var value = inputPropsProp.value != null ? inputPropsProp.value : valueProp;\n\n  var _React$useRef = React.useRef(value != null),\n      isControlled = _React$useRef.current;\n\n  var inputRef = React.useRef();\n  var handleInputRefWarning = React.useCallback(function (instance) {\n    if (process.env.NODE_ENV !== 'production') {\n      if (instance && instance.nodeName !== 'INPUT' && !instance.focus) {\n        console.error(['Material-UI: You have provided a `inputComponent` to the input component', 'that does not correctly handle the `inputRef` prop.', 'Make sure the `inputRef` prop is called with a HTMLInputElement.'].join('\\n'));\n      }\n    }\n  }, []);\n  var handleInputPropsRefProp = useForkRef(inputPropsProp.ref, handleInputRefWarning);\n  var handleInputRefProp = useForkRef(inputRefProp, handleInputPropsRefProp);\n  var handleInputRef = useForkRef(inputRef, handleInputRefProp);\n\n  var _React$useState = React.useState(false),\n      focused = _React$useState[0],\n      setFocused = _React$useState[1];\n\n  var muiFormControl = useFormControl();\n\n  if (process.env.NODE_ENV !== 'production') {\n    // eslint-disable-next-line react-hooks/rules-of-hooks\n    React.useEffect(function () {\n      if (muiFormControl) {\n        return muiFormControl.registerEffect();\n      }\n\n      return undefined;\n    }, [muiFormControl]);\n  }\n\n  var fcs = formControlState({\n    props: props,\n    muiFormControl: muiFormControl,\n    states: ['color', 'disabled', 'error', 'hiddenLabel', 'margin', 'required', 'filled']\n  });\n  fcs.focused = muiFormControl ? muiFormControl.focused : focused; // The blur won't fire when the disabled state is set on a focused input.\n  // We need to book keep the focused state manually.\n\n  React.useEffect(function () {\n    if (!muiFormControl && disabled && focused) {\n      setFocused(false);\n\n      if (onBlur) {\n        onBlur();\n      }\n    }\n  }, [muiFormControl, disabled, focused, onBlur]);\n  var onFilled = muiFormControl && muiFormControl.onFilled;\n  var onEmpty = muiFormControl && muiFormControl.onEmpty;\n  var checkDirty = React.useCallback(function (obj) {\n    if (isFilled(obj)) {\n      if (onFilled) {\n        onFilled();\n      }\n    } else if (onEmpty) {\n      onEmpty();\n    }\n  }, [onFilled, onEmpty]);\n  useEnhancedEffect(function () {\n    if (isControlled) {\n      checkDirty({\n        value: value\n      });\n    }\n  }, [value, checkDirty, isControlled]);\n\n  var handleFocus = function handleFocus(event) {\n    // Fix a bug with IE 11 where the focus/blur events are triggered\n    // while the input is disabled.\n    if (fcs.disabled) {\n      event.stopPropagation();\n      return;\n    }\n\n    if (onFocus) {\n      onFocus(event);\n    }\n\n    if (inputPropsProp.onFocus) {\n      inputPropsProp.onFocus(event);\n    }\n\n    if (muiFormControl && muiFormControl.onFocus) {\n      muiFormControl.onFocus(event);\n    } else {\n      setFocused(true);\n    }\n  };\n\n  var handleBlur = function handleBlur(event) {\n    if (onBlur) {\n      onBlur(event);\n    }\n\n    if (inputPropsProp.onBlur) {\n      inputPropsProp.onBlur(event);\n    }\n\n    if (muiFormControl && muiFormControl.onBlur) {\n      muiFormControl.onBlur(event);\n    } else {\n      setFocused(false);\n    }\n  };\n\n  var handleChange = function handleChange(event) {\n    if (!isControlled) {\n      var element = event.target || inputRef.current;\n\n      if (element == null) {\n        throw new Error(process.env.NODE_ENV !== \"production\" ? \"Material-UI: Expected valid input target. Did you use a custom `inputComponent` and forget to forward refs? See https://material-ui.com/r/input-component-ref-interface for more info.\" : _formatMuiErrorMessage(1));\n      }\n\n      checkDirty({\n        value: element.value\n      });\n    }\n\n    for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {\n      args[_key - 1] = arguments[_key];\n    }\n\n    if (inputPropsProp.onChange) {\n      inputPropsProp.onChange.apply(inputPropsProp, [event].concat(args));\n    } // Perform in the willUpdate\n\n\n    if (onChange) {\n      onChange.apply(void 0, [event].concat(args));\n    }\n  }; // Check the input state on mount, in case it was filled by the user\n  // or auto filled by the browser before the hydration (for SSR).\n\n\n  React.useEffect(function () {\n    checkDirty(inputRef.current);\n  }, []); // eslint-disable-line react-hooks/exhaustive-deps\n\n  var handleClick = function handleClick(event) {\n    if (inputRef.current && event.currentTarget === event.target) {\n      inputRef.current.focus();\n    }\n\n    if (onClick) {\n      onClick(event);\n    }\n  };\n\n  var InputComponent = inputComponent;\n\n  var inputProps = _extends({}, inputPropsProp, {\n    ref: handleInputRef\n  });\n\n  if (typeof InputComponent !== 'string') {\n    inputProps = _extends({\n      // Rename ref to inputRef as we don't know the\n      // provided `inputComponent` structure.\n      inputRef: handleInputRef,\n      type: type\n    }, inputProps, {\n      ref: null\n    });\n  } else if (multiline) {\n    if (rows && !maxRows && !minRows && !rowsMax && !rowsMin) {\n      InputComponent = 'textarea';\n    } else {\n      inputProps = _extends({\n        minRows: rows || minRows,\n        rowsMax: rowsMax,\n        maxRows: maxRows\n      }, inputProps);\n      InputComponent = TextareaAutosize;\n    }\n  } else {\n    inputProps = _extends({\n      type: type\n    }, inputProps);\n  }\n\n  var handleAutoFill = function handleAutoFill(event) {\n    // Provide a fake value as Chrome might not let you access it for security reasons.\n    checkDirty(event.animationName === 'mui-auto-fill-cancel' ? inputRef.current : {\n      value: 'x'\n    });\n  };\n\n  React.useEffect(function () {\n    if (muiFormControl) {\n      muiFormControl.setAdornedStart(Boolean(startAdornment));\n    }\n  }, [muiFormControl, startAdornment]);\n  return /*#__PURE__*/React.createElement(\"div\", _extends({\n    className: clsx(classes.root, classes[\"color\".concat(capitalize(fcs.color || 'primary'))], className, fcs.disabled && classes.disabled, fcs.error && classes.error, fullWidth && classes.fullWidth, fcs.focused && classes.focused, muiFormControl && classes.formControl, multiline && classes.multiline, startAdornment && classes.adornedStart, endAdornment && classes.adornedEnd, fcs.margin === 'dense' && classes.marginDense),\n    onClick: handleClick,\n    ref: ref\n  }, other), startAdornment, /*#__PURE__*/React.createElement(FormControlContext.Provider, {\n    value: null\n  }, /*#__PURE__*/React.createElement(InputComponent, _extends({\n    \"aria-invalid\": fcs.error,\n    \"aria-describedby\": ariaDescribedby,\n    autoComplete: autoComplete,\n    autoFocus: autoFocus,\n    defaultValue: defaultValue,\n    disabled: fcs.disabled,\n    id: id,\n    onAnimationStart: handleAutoFill,\n    name: name,\n    placeholder: placeholder,\n    readOnly: readOnly,\n    required: fcs.required,\n    rows: rows,\n    value: value,\n    onKeyDown: onKeyDown,\n    onKeyUp: onKeyUp\n  }, inputProps, {\n    className: clsx(classes.input, inputPropsProp.className, fcs.disabled && classes.disabled, multiline && classes.inputMultiline, fcs.hiddenLabel && classes.inputHiddenLabel, startAdornment && classes.inputAdornedStart, endAdornment && classes.inputAdornedEnd, type === 'search' && classes.inputTypeSearch, fcs.margin === 'dense' && classes.inputMarginDense),\n    onBlur: handleBlur,\n    onChange: handleChange,\n    onFocus: handleFocus\n  }))), endAdornment, renderSuffix ? renderSuffix(_extends({}, fcs, {\n    startAdornment: startAdornment\n  })) : null);\n});\nprocess.env.NODE_ENV !== \"production\" ? InputBase.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * @ignore\n   */\n  'aria-describedby': PropTypes.string,\n\n  /**\n   * This prop helps users to fill forms faster, especially on mobile devices.\n   * The name can be confusing, as it's more like an autofill.\n   * You can learn more about it [following the specification](https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#autofill).\n   */\n  autoComplete: PropTypes.string,\n\n  /**\n   * If `true`, the `input` element will be focused during the first mount.\n   */\n  autoFocus: PropTypes.bool,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The color of the component. It supports those theme colors that make sense for this component.\n   */\n  color: PropTypes.oneOf(['primary', 'secondary']),\n\n  /**\n   * The default `input` element value. Use when the component is not controlled.\n   */\n  defaultValue: PropTypes.any,\n\n  /**\n   * If `true`, the `input` element will be disabled.\n   */\n  disabled: PropTypes.bool,\n\n  /**\n   * End `InputAdornment` for this component.\n   */\n  endAdornment: PropTypes.node,\n\n  /**\n   * If `true`, the input will indicate an error. This is normally obtained via context from\n   * FormControl.\n   */\n  error: PropTypes.bool,\n\n  /**\n   * If `true`, the input will take up the full width of its container.\n   */\n  fullWidth: PropTypes.bool,\n\n  /**\n   * The id of the `input` element.\n   */\n  id: PropTypes.string,\n\n  /**\n   * The component used for the `input` element.\n   * Either a string to use a HTML element or a component.\n   */\n  inputComponent: PropTypes.elementType,\n\n  /**\n   * [Attributes](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#Attributes) applied to the `input` element.\n   */\n  inputProps: PropTypes.object,\n\n  /**\n   * Pass a ref to the `input` element.\n   */\n  inputRef: refType,\n\n  /**\n   * If `dense`, will adjust vertical spacing. This is normally obtained via context from\n   * FormControl.\n   */\n  margin: PropTypes.oneOf(['dense', 'none']),\n\n  /**\n   * Maximum number of rows to display when multiline option is set to true.\n   */\n  maxRows: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * Minimum number of rows to display when multiline option is set to true.\n   */\n  minRows: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * If `true`, a textarea element will be rendered.\n   */\n  multiline: PropTypes.bool,\n\n  /**\n   * Name attribute of the `input` element.\n   */\n  name: PropTypes.string,\n\n  /**\n   * Callback fired when the input is blurred.\n   *\n   * Notice that the first argument (event) might be undefined.\n   */\n  onBlur: PropTypes.func,\n\n  /**\n   * Callback fired when the value is changed.\n   *\n   * @param {object} event The event source of the callback.\n   * You can pull out the new value by accessing `event.target.value` (string).\n   */\n  onChange: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onClick: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onFocus: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onKeyDown: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onKeyUp: PropTypes.func,\n\n  /**\n   * The short hint displayed in the input before the user enters a value.\n   */\n  placeholder: PropTypes.string,\n\n  /**\n   * It prevents the user from changing the value of the field\n   * (not from interacting with the field).\n   */\n  readOnly: PropTypes.bool,\n\n  /**\n   * @ignore\n   */\n  renderSuffix: PropTypes.func,\n\n  /**\n   * If `true`, the `input` element will be required.\n   */\n  required: PropTypes.bool,\n\n  /**\n   * Number of rows to display when multiline option is set to true.\n   */\n  rows: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * Maximum number of rows to display.\n   * @deprecated Use `maxRows` instead.\n   */\n  rowsMax: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * Minimum number of rows to display.\n   * @deprecated Use `minRows` instead.\n   */\n  rowsMin: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * Start `InputAdornment` for this component.\n   */\n  startAdornment: PropTypes.node,\n\n  /**\n   * Type of the `input` element. It should be [a valid HTML5 input type](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#Form_%3Cinput%3E_types).\n   */\n  type: PropTypes.string,\n\n  /**\n   * The value of the `input` element, required for a controlled component.\n   */\n  value: PropTypes.any\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiInputBase'\n})(InputBase);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport { refType } from '@material-ui/utils';\nimport InputBase from '../InputBase';\nimport withStyles from '../styles/withStyles';\nexport var styles = function styles(theme) {\n  var light = theme.palette.type === 'light';\n  var bottomLineColor = light ? 'rgba(0, 0, 0, 0.42)' : 'rgba(255, 255, 255, 0.7)';\n  return {\n    /* Styles applied to the root element. */\n    root: {\n      position: 'relative'\n    },\n\n    /* Styles applied to the root element if the component is a descendant of `FormControl`. */\n    formControl: {\n      'label + &': {\n        marginTop: 16\n      }\n    },\n\n    /* Styles applied to the root element if the component is focused. */\n    focused: {},\n\n    /* Styles applied to the root element if `disabled={true}`. */\n    disabled: {},\n\n    /* Styles applied to the root element if color secondary. */\n    colorSecondary: {\n      '&$underline:after': {\n        borderBottomColor: theme.palette.secondary.main\n      }\n    },\n\n    /* Styles applied to the root element if `disableUnderline={false}`. */\n    underline: {\n      '&:after': {\n        borderBottom: \"2px solid \".concat(theme.palette.primary.main),\n        left: 0,\n        bottom: 0,\n        // Doing the other way around crash on IE 11 \"''\" https://github.com/cssinjs/jss/issues/242\n        content: '\"\"',\n        position: 'absolute',\n        right: 0,\n        transform: 'scaleX(0)',\n        transition: theme.transitions.create('transform', {\n          duration: theme.transitions.duration.shorter,\n          easing: theme.transitions.easing.easeOut\n        }),\n        pointerEvents: 'none' // Transparent to the hover style.\n\n      },\n      '&$focused:after': {\n        transform: 'scaleX(1)'\n      },\n      '&$error:after': {\n        borderBottomColor: theme.palette.error.main,\n        transform: 'scaleX(1)' // error is always underlined in red\n\n      },\n      '&:before': {\n        borderBottom: \"1px solid \".concat(bottomLineColor),\n        left: 0,\n        bottom: 0,\n        // Doing the other way around crash on IE 11 \"''\" https://github.com/cssinjs/jss/issues/242\n        content: '\"\\\\00a0\"',\n        position: 'absolute',\n        right: 0,\n        transition: theme.transitions.create('border-bottom-color', {\n          duration: theme.transitions.duration.shorter\n        }),\n        pointerEvents: 'none' // Transparent to the hover style.\n\n      },\n      '&:hover:not($disabled):before': {\n        borderBottom: \"2px solid \".concat(theme.palette.text.primary),\n        // Reset on touch devices, it doesn't add specificity\n        '@media (hover: none)': {\n          borderBottom: \"1px solid \".concat(bottomLineColor)\n        }\n      },\n      '&$disabled:before': {\n        borderBottomStyle: 'dotted'\n      }\n    },\n\n    /* Pseudo-class applied to the root element if `error={true}`. */\n    error: {},\n\n    /* Styles applied to the `input` element if `margin=\"dense\"`. */\n    marginDense: {},\n\n    /* Styles applied to the root element if `multiline={true}`. */\n    multiline: {},\n\n    /* Styles applied to the root element if `fullWidth={true}`. */\n    fullWidth: {},\n\n    /* Styles applied to the `input` element. */\n    input: {},\n\n    /* Styles applied to the `input` element if `margin=\"dense\"`. */\n    inputMarginDense: {},\n\n    /* Styles applied to the `input` element if `multiline={true}`. */\n    inputMultiline: {},\n\n    /* Styles applied to the `input` element if `type=\"search\"`. */\n    inputTypeSearch: {}\n  };\n};\nvar Input = /*#__PURE__*/React.forwardRef(function Input(props, ref) {\n  var disableUnderline = props.disableUnderline,\n      classes = props.classes,\n      _props$fullWidth = props.fullWidth,\n      fullWidth = _props$fullWidth === void 0 ? false : _props$fullWidth,\n      _props$inputComponent = props.inputComponent,\n      inputComponent = _props$inputComponent === void 0 ? 'input' : _props$inputComponent,\n      _props$multiline = props.multiline,\n      multiline = _props$multiline === void 0 ? false : _props$multiline,\n      _props$type = props.type,\n      type = _props$type === void 0 ? 'text' : _props$type,\n      other = _objectWithoutProperties(props, [\"disableUnderline\", \"classes\", \"fullWidth\", \"inputComponent\", \"multiline\", \"type\"]);\n\n  return /*#__PURE__*/React.createElement(InputBase, _extends({\n    classes: _extends({}, classes, {\n      root: clsx(classes.root, !disableUnderline && classes.underline),\n      underline: null\n    }),\n    fullWidth: fullWidth,\n    inputComponent: inputComponent,\n    multiline: multiline,\n    ref: ref,\n    type: type\n  }, other));\n});\nprocess.env.NODE_ENV !== \"production\" ? Input.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * This prop helps users to fill forms faster, especially on mobile devices.\n   * The name can be confusing, as it's more like an autofill.\n   * You can learn more about it [following the specification](https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#autofill).\n   */\n  autoComplete: PropTypes.string,\n\n  /**\n   * If `true`, the `input` element will be focused during the first mount.\n   */\n  autoFocus: PropTypes.bool,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * The color of the component. It supports those theme colors that make sense for this component.\n   */\n  color: PropTypes.oneOf(['primary', 'secondary']),\n\n  /**\n   * The default `input` element value. Use when the component is not controlled.\n   */\n  defaultValue: PropTypes.any,\n\n  /**\n   * If `true`, the `input` element will be disabled.\n   */\n  disabled: PropTypes.bool,\n\n  /**\n   * If `true`, the input will not have an underline.\n   */\n  disableUnderline: PropTypes.bool,\n\n  /**\n   * End `InputAdornment` for this component.\n   */\n  endAdornment: PropTypes.node,\n\n  /**\n   * If `true`, the input will indicate an error. This is normally obtained via context from\n   * FormControl.\n   */\n  error: PropTypes.bool,\n\n  /**\n   * If `true`, the input will take up the full width of its container.\n   */\n  fullWidth: PropTypes.bool,\n\n  /**\n   * The id of the `input` element.\n   */\n  id: PropTypes.string,\n\n  /**\n   * The component used for the `input` element.\n   * Either a string to use a HTML element or a component.\n   */\n  inputComponent: PropTypes.elementType,\n\n  /**\n   * [Attributes](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#Attributes) applied to the `input` element.\n   */\n  inputProps: PropTypes.object,\n\n  /**\n   * Pass a ref to the `input` element.\n   */\n  inputRef: refType,\n\n  /**\n   * If `dense`, will adjust vertical spacing. This is normally obtained via context from\n   * FormControl.\n   */\n  margin: PropTypes.oneOf(['dense', 'none']),\n\n  /**\n   * Maximum number of rows to display when multiline option is set to true.\n   */\n  maxRows: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * If `true`, a textarea element will be rendered.\n   */\n  multiline: PropTypes.bool,\n\n  /**\n   * Name attribute of the `input` element.\n   */\n  name: PropTypes.string,\n\n  /**\n   * Callback fired when the value is changed.\n   *\n   * @param {object} event The event source of the callback.\n   * You can pull out the new value by accessing `event.target.value` (string).\n   */\n  onChange: PropTypes.func,\n\n  /**\n   * The short hint displayed in the input before the user enters a value.\n   */\n  placeholder: PropTypes.string,\n\n  /**\n   * It prevents the user from changing the value of the field\n   * (not from interacting with the field).\n   */\n  readOnly: PropTypes.bool,\n\n  /**\n   * If `true`, the `input` element will be required.\n   */\n  required: PropTypes.bool,\n\n  /**\n   * Number of rows to display when multiline option is set to true.\n   */\n  rows: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * Start `InputAdornment` for this component.\n   */\n  startAdornment: PropTypes.node,\n\n  /**\n   * Type of the `input` element. It should be [a valid HTML5 input type](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#Form_%3Cinput%3E_types).\n   */\n  type: PropTypes.string,\n\n  /**\n   * The value of the `input` element, required for a controlled component.\n   */\n  value: PropTypes.any\n} : void 0;\nInput.muiName = 'Input';\nexport default withStyles(styles, {\n  name: 'MuiInput'\n})(Input);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport { refType } from '@material-ui/utils';\nimport InputBase from '../InputBase';\nimport withStyles from '../styles/withStyles';\nexport var styles = function styles(theme) {\n  var light = theme.palette.type === 'light';\n  var bottomLineColor = light ? 'rgba(0, 0, 0, 0.42)' : 'rgba(255, 255, 255, 0.7)';\n  var backgroundColor = light ? 'rgba(0, 0, 0, 0.09)' : 'rgba(255, 255, 255, 0.09)';\n  return {\n    /* Styles applied to the root element. */\n    root: {\n      position: 'relative',\n      backgroundColor: backgroundColor,\n      borderTopLeftRadius: theme.shape.borderRadius,\n      borderTopRightRadius: theme.shape.borderRadius,\n      transition: theme.transitions.create('background-color', {\n        duration: theme.transitions.duration.shorter,\n        easing: theme.transitions.easing.easeOut\n      }),\n      '&:hover': {\n        backgroundColor: light ? 'rgba(0, 0, 0, 0.13)' : 'rgba(255, 255, 255, 0.13)',\n        // Reset on touch devices, it doesn't add specificity\n        '@media (hover: none)': {\n          backgroundColor: backgroundColor\n        }\n      },\n      '&$focused': {\n        backgroundColor: light ? 'rgba(0, 0, 0, 0.09)' : 'rgba(255, 255, 255, 0.09)'\n      },\n      '&$disabled': {\n        backgroundColor: light ? 'rgba(0, 0, 0, 0.12)' : 'rgba(255, 255, 255, 0.12)'\n      }\n    },\n\n    /* Styles applied to the root element if color secondary. */\n    colorSecondary: {\n      '&$underline:after': {\n        borderBottomColor: theme.palette.secondary.main\n      }\n    },\n\n    /* Styles applied to the root element if `disableUnderline={false}`. */\n    underline: {\n      '&:after': {\n        borderBottom: \"2px solid \".concat(theme.palette.primary.main),\n        left: 0,\n        bottom: 0,\n        // Doing the other way around crash on IE 11 \"''\" https://github.com/cssinjs/jss/issues/242\n        content: '\"\"',\n        position: 'absolute',\n        right: 0,\n        transform: 'scaleX(0)',\n        transition: theme.transitions.create('transform', {\n          duration: theme.transitions.duration.shorter,\n          easing: theme.transitions.easing.easeOut\n        }),\n        pointerEvents: 'none' // Transparent to the hover style.\n\n      },\n      '&$focused:after': {\n        transform: 'scaleX(1)'\n      },\n      '&$error:after': {\n        borderBottomColor: theme.palette.error.main,\n        transform: 'scaleX(1)' // error is always underlined in red\n\n      },\n      '&:before': {\n        borderBottom: \"1px solid \".concat(bottomLineColor),\n        left: 0,\n        bottom: 0,\n        // Doing the other way around crash on IE 11 \"''\" https://github.com/cssinjs/jss/issues/242\n        content: '\"\\\\00a0\"',\n        position: 'absolute',\n        right: 0,\n        transition: theme.transitions.create('border-bottom-color', {\n          duration: theme.transitions.duration.shorter\n        }),\n        pointerEvents: 'none' // Transparent to the hover style.\n\n      },\n      '&:hover:before': {\n        borderBottom: \"1px solid \".concat(theme.palette.text.primary)\n      },\n      '&$disabled:before': {\n        borderBottomStyle: 'dotted'\n      }\n    },\n\n    /* Pseudo-class applied to the root element if the component is focused. */\n    focused: {},\n\n    /* Pseudo-class applied to the root element if `disabled={true}`. */\n    disabled: {},\n\n    /* Styles applied to the root element if `startAdornment` is provided. */\n    adornedStart: {\n      paddingLeft: 12\n    },\n\n    /* Styles applied to the root element if `endAdornment` is provided. */\n    adornedEnd: {\n      paddingRight: 12\n    },\n\n    /* Pseudo-class applied to the root element if `error={true}`. */\n    error: {},\n\n    /* Styles applied to the `input` element if `margin=\"dense\"`. */\n    marginDense: {},\n\n    /* Styles applied to the root element if `multiline={true}`. */\n    multiline: {\n      padding: '27px 12px 10px',\n      '&$marginDense': {\n        paddingTop: 23,\n        paddingBottom: 6\n      }\n    },\n\n    /* Styles applied to the `input` element. */\n    input: {\n      padding: '27px 12px 10px',\n      '&:-webkit-autofill': {\n        WebkitBoxShadow: theme.palette.type === 'light' ? null : '0 0 0 100px #266798 inset',\n        WebkitTextFillColor: theme.palette.type === 'light' ? null : '#fff',\n        caretColor: theme.palette.type === 'light' ? null : '#fff',\n        borderTopLeftRadius: 'inherit',\n        borderTopRightRadius: 'inherit'\n      }\n    },\n\n    /* Styles applied to the `input` element if `margin=\"dense\"`. */\n    inputMarginDense: {\n      paddingTop: 23,\n      paddingBottom: 6\n    },\n\n    /* Styles applied to the `input` if in `<FormControl hiddenLabel />`. */\n    inputHiddenLabel: {\n      paddingTop: 18,\n      paddingBottom: 19,\n      '&$inputMarginDense': {\n        paddingTop: 10,\n        paddingBottom: 11\n      }\n    },\n\n    /* Styles applied to the `input` element if `multiline={true}`. */\n    inputMultiline: {\n      padding: 0\n    },\n\n    /* Styles applied to the `input` element if `startAdornment` is provided. */\n    inputAdornedStart: {\n      paddingLeft: 0\n    },\n\n    /* Styles applied to the `input` element if `endAdornment` is provided. */\n    inputAdornedEnd: {\n      paddingRight: 0\n    }\n  };\n};\nvar FilledInput = /*#__PURE__*/React.forwardRef(function FilledInput(props, ref) {\n  var disableUnderline = props.disableUnderline,\n      classes = props.classes,\n      _props$fullWidth = props.fullWidth,\n      fullWidth = _props$fullWidth === void 0 ? false : _props$fullWidth,\n      _props$inputComponent = props.inputComponent,\n      inputComponent = _props$inputComponent === void 0 ? 'input' : _props$inputComponent,\n      _props$multiline = props.multiline,\n      multiline = _props$multiline === void 0 ? false : _props$multiline,\n      _props$type = props.type,\n      type = _props$type === void 0 ? 'text' : _props$type,\n      other = _objectWithoutProperties(props, [\"disableUnderline\", \"classes\", \"fullWidth\", \"inputComponent\", \"multiline\", \"type\"]);\n\n  return /*#__PURE__*/React.createElement(InputBase, _extends({\n    classes: _extends({}, classes, {\n      root: clsx(classes.root, !disableUnderline && classes.underline),\n      underline: null\n    }),\n    fullWidth: fullWidth,\n    inputComponent: inputComponent,\n    multiline: multiline,\n    ref: ref,\n    type: type\n  }, other));\n});\nprocess.env.NODE_ENV !== \"production\" ? FilledInput.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * This prop helps users to fill forms faster, especially on mobile devices.\n   * The name can be confusing, as it's more like an autofill.\n   * You can learn more about it [following the specification](https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#autofill).\n   */\n  autoComplete: PropTypes.string,\n\n  /**\n   * If `true`, the `input` element will be focused during the first mount.\n   */\n  autoFocus: PropTypes.bool,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * The color of the component. It supports those theme colors that make sense for this component.\n   */\n  color: PropTypes.oneOf(['primary', 'secondary']),\n\n  /**\n   * The default `input` element value. Use when the component is not controlled.\n   */\n  defaultValue: PropTypes.any,\n\n  /**\n   * If `true`, the `input` element will be disabled.\n   */\n  disabled: PropTypes.bool,\n\n  /**\n   * If `true`, the input will not have an underline.\n   */\n  disableUnderline: PropTypes.bool,\n\n  /**\n   * End `InputAdornment` for this component.\n   */\n  endAdornment: PropTypes.node,\n\n  /**\n   * If `true`, the input will indicate an error. This is normally obtained via context from\n   * FormControl.\n   */\n  error: PropTypes.bool,\n\n  /**\n   * If `true`, the input will take up the full width of its container.\n   */\n  fullWidth: PropTypes.bool,\n\n  /**\n   * The id of the `input` element.\n   */\n  id: PropTypes.string,\n\n  /**\n   * The component used for the `input` element.\n   * Either a string to use a HTML element or a component.\n   */\n  inputComponent: PropTypes.elementType,\n\n  /**\n   * [Attributes](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#Attributes) applied to the `input` element.\n   */\n  inputProps: PropTypes.object,\n\n  /**\n   * Pass a ref to the `input` element.\n   */\n  inputRef: refType,\n\n  /**\n   * If `dense`, will adjust vertical spacing. This is normally obtained via context from\n   * FormControl.\n   */\n  margin: PropTypes.oneOf(['dense', 'none']),\n\n  /**\n   * Maximum number of rows to display when multiline option is set to true.\n   */\n  maxRows: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * If `true`, a textarea element will be rendered.\n   */\n  multiline: PropTypes.bool,\n\n  /**\n   * Name attribute of the `input` element.\n   */\n  name: PropTypes.string,\n\n  /**\n   * Callback fired when the value is changed.\n   *\n   * @param {object} event The event source of the callback.\n   * You can pull out the new value by accessing `event.target.value` (string).\n   */\n  onChange: PropTypes.func,\n\n  /**\n   * The short hint displayed in the input before the user enters a value.\n   */\n  placeholder: PropTypes.string,\n\n  /**\n   * It prevents the user from changing the value of the field\n   * (not from interacting with the field).\n   */\n  readOnly: PropTypes.bool,\n\n  /**\n   * If `true`, the `input` element will be required.\n   */\n  required: PropTypes.bool,\n\n  /**\n   * Number of rows to display when multiline option is set to true.\n   */\n  rows: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * Start `InputAdornment` for this component.\n   */\n  startAdornment: PropTypes.node,\n\n  /**\n   * Type of the `input` element. It should be [a valid HTML5 input type](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#Form_%3Cinput%3E_types).\n   */\n  type: PropTypes.string,\n\n  /**\n   * The value of the `input` element, required for a controlled component.\n   */\n  value: PropTypes.any\n} : void 0;\nFilledInput.muiName = 'Input';\nexport default withStyles(styles, {\n  name: 'MuiFilledInput'\n})(FilledInput);","import _defineProperty from \"@babel/runtime/helpers/esm/defineProperty\";\nimport _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport withStyles from '../styles/withStyles';\nimport useTheme from '../styles/useTheme';\nimport capitalize from '../utils/capitalize';\nexport var styles = function styles(theme) {\n  return {\n    /* Styles applied to the root element. */\n    root: {\n      position: 'absolute',\n      bottom: 0,\n      right: 0,\n      top: -5,\n      left: 0,\n      margin: 0,\n      padding: '0 8px',\n      pointerEvents: 'none',\n      borderRadius: 'inherit',\n      borderStyle: 'solid',\n      borderWidth: 1,\n      overflow: 'hidden'\n    },\n\n    /* Styles applied to the legend element when `labelWidth` is provided. */\n    legend: {\n      textAlign: 'left',\n      padding: 0,\n      lineHeight: '11px',\n      // sync with `height` in `legend` styles\n      transition: theme.transitions.create('width', {\n        duration: 150,\n        easing: theme.transitions.easing.easeOut\n      })\n    },\n\n    /* Styles applied to the legend element. */\n    legendLabelled: {\n      display: 'block',\n      width: 'auto',\n      textAlign: 'left',\n      padding: 0,\n      height: 11,\n      // sync with `lineHeight` in `legend` styles\n      fontSize: '0.75em',\n      visibility: 'hidden',\n      maxWidth: 0.01,\n      transition: theme.transitions.create('max-width', {\n        duration: 50,\n        easing: theme.transitions.easing.easeOut\n      }),\n      '& > span': {\n        paddingLeft: 5,\n        paddingRight: 5,\n        display: 'inline-block'\n      }\n    },\n\n    /* Styles applied to the legend element is notched. */\n    legendNotched: {\n      maxWidth: 1000,\n      transition: theme.transitions.create('max-width', {\n        duration: 100,\n        easing: theme.transitions.easing.easeOut,\n        delay: 50\n      })\n    }\n  };\n};\n/**\n * @ignore - internal component.\n */\n\nvar NotchedOutline = /*#__PURE__*/React.forwardRef(function NotchedOutline(props, ref) {\n  var children = props.children,\n      classes = props.classes,\n      className = props.className,\n      label = props.label,\n      labelWidthProp = props.labelWidth,\n      notched = props.notched,\n      style = props.style,\n      other = _objectWithoutProperties(props, [\"children\", \"classes\", \"className\", \"label\", \"labelWidth\", \"notched\", \"style\"]);\n\n  var theme = useTheme();\n  var align = theme.direction === 'rtl' ? 'right' : 'left';\n\n  if (label !== undefined) {\n    return /*#__PURE__*/React.createElement(\"fieldset\", _extends({\n      \"aria-hidden\": true,\n      className: clsx(classes.root, className),\n      ref: ref,\n      style: style\n    }, other), /*#__PURE__*/React.createElement(\"legend\", {\n      className: clsx(classes.legendLabelled, notched && classes.legendNotched)\n    }, label ? /*#__PURE__*/React.createElement(\"span\", null, label) : /*#__PURE__*/React.createElement(\"span\", {\n      dangerouslySetInnerHTML: {\n        __html: '&#8203;'\n      }\n    })));\n  }\n\n  var labelWidth = labelWidthProp > 0 ? labelWidthProp * 0.75 + 8 : 0.01;\n  return /*#__PURE__*/React.createElement(\"fieldset\", _extends({\n    \"aria-hidden\": true,\n    style: _extends(_defineProperty({}, \"padding\".concat(capitalize(align)), 8), style),\n    className: clsx(classes.root, className),\n    ref: ref\n  }, other), /*#__PURE__*/React.createElement(\"legend\", {\n    className: classes.legend,\n    style: {\n      // IE 11: fieldset with legend does not render\n      // a border radius. This maintains consistency\n      // by always having a legend rendered\n      width: notched ? labelWidth : 0.01\n    }\n  }, /*#__PURE__*/React.createElement(\"span\", {\n    dangerouslySetInnerHTML: {\n      __html: '&#8203;'\n    }\n  })));\n});\nprocess.env.NODE_ENV !== \"production\" ? NotchedOutline.propTypes = {\n  /**\n   * The content of the component.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The label.\n   */\n  label: PropTypes.node,\n\n  /**\n   * The width of the label.\n   */\n  labelWidth: PropTypes.number.isRequired,\n\n  /**\n   * If `true`, the outline is notched to accommodate the label.\n   */\n  notched: PropTypes.bool.isRequired,\n\n  /**\n   * @ignore\n   */\n  style: PropTypes.object\n} : void 0;\nexport default withStyles(styles, {\n  name: 'PrivateNotchedOutline'\n})(NotchedOutline);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport { refType } from '@material-ui/utils';\nimport InputBase from '../InputBase';\nimport NotchedOutline from './NotchedOutline';\nimport withStyles from '../styles/withStyles';\nexport var styles = function styles(theme) {\n  var borderColor = theme.palette.type === 'light' ? 'rgba(0, 0, 0, 0.23)' : 'rgba(255, 255, 255, 0.23)';\n  return {\n    /* Styles applied to the root element. */\n    root: {\n      position: 'relative',\n      borderRadius: theme.shape.borderRadius,\n      '&:hover $notchedOutline': {\n        borderColor: theme.palette.text.primary\n      },\n      // Reset on touch devices, it doesn't add specificity\n      '@media (hover: none)': {\n        '&:hover $notchedOutline': {\n          borderColor: borderColor\n        }\n      },\n      '&$focused $notchedOutline': {\n        borderColor: theme.palette.primary.main,\n        borderWidth: 2\n      },\n      '&$error $notchedOutline': {\n        borderColor: theme.palette.error.main\n      },\n      '&$disabled $notchedOutline': {\n        borderColor: theme.palette.action.disabled\n      }\n    },\n\n    /* Styles applied to the root element if the color is secondary. */\n    colorSecondary: {\n      '&$focused $notchedOutline': {\n        borderColor: theme.palette.secondary.main\n      }\n    },\n\n    /* Styles applied to the root element if the component is focused. */\n    focused: {},\n\n    /* Styles applied to the root element if `disabled={true}`. */\n    disabled: {},\n\n    /* Styles applied to the root element if `startAdornment` is provided. */\n    adornedStart: {\n      paddingLeft: 14\n    },\n\n    /* Styles applied to the root element if `endAdornment` is provided. */\n    adornedEnd: {\n      paddingRight: 14\n    },\n\n    /* Pseudo-class applied to the root element if `error={true}`. */\n    error: {},\n\n    /* Styles applied to the `input` element if `margin=\"dense\"`. */\n    marginDense: {},\n\n    /* Styles applied to the root element if `multiline={true}`. */\n    multiline: {\n      padding: '18.5px 14px',\n      '&$marginDense': {\n        paddingTop: 10.5,\n        paddingBottom: 10.5\n      }\n    },\n\n    /* Styles applied to the `NotchedOutline` element. */\n    notchedOutline: {\n      borderColor: borderColor\n    },\n\n    /* Styles applied to the `input` element. */\n    input: {\n      padding: '18.5px 14px',\n      '&:-webkit-autofill': {\n        WebkitBoxShadow: theme.palette.type === 'light' ? null : '0 0 0 100px #266798 inset',\n        WebkitTextFillColor: theme.palette.type === 'light' ? null : '#fff',\n        caretColor: theme.palette.type === 'light' ? null : '#fff',\n        borderRadius: 'inherit'\n      }\n    },\n\n    /* Styles applied to the `input` element if `margin=\"dense\"`. */\n    inputMarginDense: {\n      paddingTop: 10.5,\n      paddingBottom: 10.5\n    },\n\n    /* Styles applied to the `input` element if `multiline={true}`. */\n    inputMultiline: {\n      padding: 0\n    },\n\n    /* Styles applied to the `input` element if `startAdornment` is provided. */\n    inputAdornedStart: {\n      paddingLeft: 0\n    },\n\n    /* Styles applied to the `input` element if `endAdornment` is provided. */\n    inputAdornedEnd: {\n      paddingRight: 0\n    }\n  };\n};\nvar OutlinedInput = /*#__PURE__*/React.forwardRef(function OutlinedInput(props, ref) {\n  var classes = props.classes,\n      _props$fullWidth = props.fullWidth,\n      fullWidth = _props$fullWidth === void 0 ? false : _props$fullWidth,\n      _props$inputComponent = props.inputComponent,\n      inputComponent = _props$inputComponent === void 0 ? 'input' : _props$inputComponent,\n      label = props.label,\n      _props$labelWidth = props.labelWidth,\n      labelWidth = _props$labelWidth === void 0 ? 0 : _props$labelWidth,\n      _props$multiline = props.multiline,\n      multiline = _props$multiline === void 0 ? false : _props$multiline,\n      notched = props.notched,\n      _props$type = props.type,\n      type = _props$type === void 0 ? 'text' : _props$type,\n      other = _objectWithoutProperties(props, [\"classes\", \"fullWidth\", \"inputComponent\", \"label\", \"labelWidth\", \"multiline\", \"notched\", \"type\"]);\n\n  return /*#__PURE__*/React.createElement(InputBase, _extends({\n    renderSuffix: function renderSuffix(state) {\n      return /*#__PURE__*/React.createElement(NotchedOutline, {\n        className: classes.notchedOutline,\n        label: label,\n        labelWidth: labelWidth,\n        notched: typeof notched !== 'undefined' ? notched : Boolean(state.startAdornment || state.filled || state.focused)\n      });\n    },\n    classes: _extends({}, classes, {\n      root: clsx(classes.root, classes.underline),\n      notchedOutline: null\n    }),\n    fullWidth: fullWidth,\n    inputComponent: inputComponent,\n    multiline: multiline,\n    ref: ref,\n    type: type\n  }, other));\n});\nprocess.env.NODE_ENV !== \"production\" ? OutlinedInput.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * This prop helps users to fill forms faster, especially on mobile devices.\n   * The name can be confusing, as it's more like an autofill.\n   * You can learn more about it [following the specification](https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#autofill).\n   */\n  autoComplete: PropTypes.string,\n\n  /**\n   * If `true`, the `input` element will be focused during the first mount.\n   */\n  autoFocus: PropTypes.bool,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * The color of the component. It supports those theme colors that make sense for this component.\n   */\n  color: PropTypes.oneOf(['primary', 'secondary']),\n\n  /**\n   * The default `input` element value. Use when the component is not controlled.\n   */\n  defaultValue: PropTypes.any,\n\n  /**\n   * If `true`, the `input` element will be disabled.\n   */\n  disabled: PropTypes.bool,\n\n  /**\n   * End `InputAdornment` for this component.\n   */\n  endAdornment: PropTypes.node,\n\n  /**\n   * If `true`, the input will indicate an error. This is normally obtained via context from\n   * FormControl.\n   */\n  error: PropTypes.bool,\n\n  /**\n   * If `true`, the input will take up the full width of its container.\n   */\n  fullWidth: PropTypes.bool,\n\n  /**\n   * The id of the `input` element.\n   */\n  id: PropTypes.string,\n\n  /**\n   * The component used for the `input` element.\n   * Either a string to use a HTML element or a component.\n   */\n  inputComponent: PropTypes.elementType,\n\n  /**\n   * [Attributes](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#Attributes) applied to the `input` element.\n   */\n  inputProps: PropTypes.object,\n\n  /**\n   * Pass a ref to the `input` element.\n   */\n  inputRef: refType,\n\n  /**\n   * The label of the input. It is only used for layout. The actual labelling\n   * is handled by `InputLabel`. If specified `labelWidth` is ignored.\n   */\n  label: PropTypes.node,\n\n  /**\n   * The width of the label. Is ignored if `label` is provided. Prefer `label`\n   * if the input label appears with a strike through.\n   */\n  labelWidth: PropTypes.number,\n\n  /**\n   * If `dense`, will adjust vertical spacing. This is normally obtained via context from\n   * FormControl.\n   */\n  margin: PropTypes.oneOf(['dense', 'none']),\n\n  /**\n   * Maximum number of rows to display when multiline option is set to true.\n   */\n  maxRows: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * If `true`, a textarea element will be rendered.\n   */\n  multiline: PropTypes.bool,\n\n  /**\n   * Name attribute of the `input` element.\n   */\n  name: PropTypes.string,\n\n  /**\n   * If `true`, the outline is notched to accommodate the label.\n   */\n  notched: PropTypes.bool,\n\n  /**\n   * Callback fired when the value is changed.\n   *\n   * @param {object} event The event source of the callback.\n   * You can pull out the new value by accessing `event.target.value` (string).\n   */\n  onChange: PropTypes.func,\n\n  /**\n   * The short hint displayed in the input before the user enters a value.\n   */\n  placeholder: PropTypes.string,\n\n  /**\n   * It prevents the user from changing the value of the field\n   * (not from interacting with the field).\n   */\n  readOnly: PropTypes.bool,\n\n  /**\n   * If `true`, the `input` element will be required.\n   */\n  required: PropTypes.bool,\n\n  /**\n   * Number of rows to display when multiline option is set to true.\n   */\n  rows: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * Start `InputAdornment` for this component.\n   */\n  startAdornment: PropTypes.node,\n\n  /**\n   * Type of the `input` element. It should be [a valid HTML5 input type](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#Form_%3Cinput%3E_types).\n   */\n  type: PropTypes.string,\n\n  /**\n   * The value of the `input` element, required for a controlled component.\n   */\n  value: PropTypes.any\n} : void 0;\nOutlinedInput.muiName = 'Input';\nexport default withStyles(styles, {\n  name: 'MuiOutlinedInput'\n})(OutlinedInput);","import * as React from 'react';\nimport FormControlContext from './FormControlContext';\nexport default function useFormControl() {\n  return React.useContext(FormControlContext);\n}","import _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport _extends from \"@babel/runtime/helpers/esm/extends\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport formControlState from '../FormControl/formControlState';\nimport useFormControl from '../FormControl/useFormControl';\nimport capitalize from '../utils/capitalize';\nimport withStyles from '../styles/withStyles';\nexport var styles = function styles(theme) {\n  return {\n    /* Styles applied to the root element. */\n    root: _extends({\n      color: theme.palette.text.secondary\n    }, theme.typography.body1, {\n      lineHeight: 1,\n      padding: 0,\n      '&$focused': {\n        color: theme.palette.primary.main\n      },\n      '&$disabled': {\n        color: theme.palette.text.disabled\n      },\n      '&$error': {\n        color: theme.palette.error.main\n      }\n    }),\n\n    /* Styles applied to the root element if the color is secondary. */\n    colorSecondary: {\n      '&$focused': {\n        color: theme.palette.secondary.main\n      }\n    },\n\n    /* Pseudo-class applied to the root element if `focused={true}`. */\n    focused: {},\n\n    /* Pseudo-class applied to the root element if `disabled={true}`. */\n    disabled: {},\n\n    /* Pseudo-class applied to the root element if `error={true}`. */\n    error: {},\n\n    /* Pseudo-class applied to the root element if `filled={true}`. */\n    filled: {},\n\n    /* Pseudo-class applied to the root element if `required={true}`. */\n    required: {},\n\n    /* Styles applied to the asterisk element. */\n    asterisk: {\n      '&$error': {\n        color: theme.palette.error.main\n      }\n    }\n  };\n};\nvar FormLabel = /*#__PURE__*/React.forwardRef(function FormLabel(props, ref) {\n  var children = props.children,\n      classes = props.classes,\n      className = props.className,\n      color = props.color,\n      _props$component = props.component,\n      Component = _props$component === void 0 ? 'label' : _props$component,\n      disabled = props.disabled,\n      error = props.error,\n      filled = props.filled,\n      focused = props.focused,\n      required = props.required,\n      other = _objectWithoutProperties(props, [\"children\", \"classes\", \"className\", \"color\", \"component\", \"disabled\", \"error\", \"filled\", \"focused\", \"required\"]);\n\n  var muiFormControl = useFormControl();\n  var fcs = formControlState({\n    props: props,\n    muiFormControl: muiFormControl,\n    states: ['color', 'required', 'focused', 'disabled', 'error', 'filled']\n  });\n  return /*#__PURE__*/React.createElement(Component, _extends({\n    className: clsx(classes.root, classes[\"color\".concat(capitalize(fcs.color || 'primary'))], className, fcs.disabled && classes.disabled, fcs.error && classes.error, fcs.filled && classes.filled, fcs.focused && classes.focused, fcs.required && classes.required),\n    ref: ref\n  }, other), children, fcs.required && /*#__PURE__*/React.createElement(\"span\", {\n    \"aria-hidden\": true,\n    className: clsx(classes.asterisk, fcs.error && classes.error)\n  }, \"\\u2009\", '*'));\n});\nprocess.env.NODE_ENV !== \"production\" ? FormLabel.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * The content of the component.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The color of the component. It supports those theme colors that make sense for this component.\n   */\n  color: PropTypes.oneOf(['primary', 'secondary']),\n\n  /**\n   * The component used for the root node.\n   * Either a string to use a HTML element or a component.\n   */\n  component: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .elementType,\n\n  /**\n   * If `true`, the label should be displayed in a disabled state.\n   */\n  disabled: PropTypes.bool,\n\n  /**\n   * If `true`, the label should be displayed in an error state.\n   */\n  error: PropTypes.bool,\n\n  /**\n   * If `true`, the label should use filled classes key.\n   */\n  filled: PropTypes.bool,\n\n  /**\n   * If `true`, the input of this label is focused (used by `FormGroup` components).\n   */\n  focused: PropTypes.bool,\n\n  /**\n   * If `true`, the label will indicate that the input is required.\n   */\n  required: PropTypes.bool\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiFormLabel'\n})(FormLabel);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport formControlState from '../FormControl/formControlState';\nimport useFormControl from '../FormControl/useFormControl';\nimport withStyles from '../styles/withStyles';\nimport FormLabel from '../FormLabel';\nexport var styles = function styles(theme) {\n  return {\n    /* Styles applied to the root element. */\n    root: {\n      display: 'block',\n      transformOrigin: 'top left'\n    },\n\n    /* Pseudo-class applied to the root element if `focused={true}`. */\n    focused: {},\n\n    /* Pseudo-class applied to the root element if `disabled={true}`. */\n    disabled: {},\n\n    /* Pseudo-class applied to the root element if `error={true}`. */\n    error: {},\n\n    /* Pseudo-class applied to the root element if `required={true}`. */\n    required: {},\n\n    /* Pseudo-class applied to the asterisk element. */\n    asterisk: {},\n\n    /* Styles applied to the root element if the component is a descendant of `FormControl`. */\n    formControl: {\n      position: 'absolute',\n      left: 0,\n      top: 0,\n      // slight alteration to spec spacing to match visual spec result\n      transform: 'translate(0, 24px) scale(1)'\n    },\n\n    /* Styles applied to the root element if `margin=\"dense\"`. */\n    marginDense: {\n      // Compensation for the `Input.inputDense` style.\n      transform: 'translate(0, 21px) scale(1)'\n    },\n\n    /* Styles applied to the `input` element if `shrink={true}`. */\n    shrink: {\n      transform: 'translate(0, 1.5px) scale(0.75)',\n      transformOrigin: 'top left'\n    },\n\n    /* Styles applied to the `input` element if `disableAnimation={false}`. */\n    animated: {\n      transition: theme.transitions.create(['color', 'transform'], {\n        duration: theme.transitions.duration.shorter,\n        easing: theme.transitions.easing.easeOut\n      })\n    },\n\n    /* Styles applied to the root element if `variant=\"filled\"`. */\n    filled: {\n      // Chrome's autofill feature gives the input field a yellow background.\n      // Since the input field is behind the label in the HTML tree,\n      // the input field is drawn last and hides the label with an opaque background color.\n      // zIndex: 1 will raise the label above opaque background-colors of input.\n      zIndex: 1,\n      pointerEvents: 'none',\n      transform: 'translate(12px, 20px) scale(1)',\n      '&$marginDense': {\n        transform: 'translate(12px, 17px) scale(1)'\n      },\n      '&$shrink': {\n        transform: 'translate(12px, 10px) scale(0.75)',\n        '&$marginDense': {\n          transform: 'translate(12px, 7px) scale(0.75)'\n        }\n      }\n    },\n\n    /* Styles applied to the root element if `variant=\"outlined\"`. */\n    outlined: {\n      // see comment above on filled.zIndex\n      zIndex: 1,\n      pointerEvents: 'none',\n      transform: 'translate(14px, 20px) scale(1)',\n      '&$marginDense': {\n        transform: 'translate(14px, 12px) scale(1)'\n      },\n      '&$shrink': {\n        transform: 'translate(14px, -6px) scale(0.75)'\n      }\n    }\n  };\n};\nvar InputLabel = /*#__PURE__*/React.forwardRef(function InputLabel(props, ref) {\n  var classes = props.classes,\n      className = props.className,\n      _props$disableAnimati = props.disableAnimation,\n      disableAnimation = _props$disableAnimati === void 0 ? false : _props$disableAnimati,\n      margin = props.margin,\n      shrinkProp = props.shrink,\n      variant = props.variant,\n      other = _objectWithoutProperties(props, [\"classes\", \"className\", \"disableAnimation\", \"margin\", \"shrink\", \"variant\"]);\n\n  var muiFormControl = useFormControl();\n  var shrink = shrinkProp;\n\n  if (typeof shrink === 'undefined' && muiFormControl) {\n    shrink = muiFormControl.filled || muiFormControl.focused || muiFormControl.adornedStart;\n  }\n\n  var fcs = formControlState({\n    props: props,\n    muiFormControl: muiFormControl,\n    states: ['margin', 'variant']\n  });\n  return /*#__PURE__*/React.createElement(FormLabel, _extends({\n    \"data-shrink\": shrink,\n    className: clsx(classes.root, className, muiFormControl && classes.formControl, !disableAnimation && classes.animated, shrink && classes.shrink, fcs.margin === 'dense' && classes.marginDense, {\n      'filled': classes.filled,\n      'outlined': classes.outlined\n    }[fcs.variant]),\n    classes: {\n      focused: classes.focused,\n      disabled: classes.disabled,\n      error: classes.error,\n      required: classes.required,\n      asterisk: classes.asterisk\n    },\n    ref: ref\n  }, other));\n});\nprocess.env.NODE_ENV !== \"production\" ? InputLabel.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * The contents of the `InputLabel`.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The color of the component. It supports those theme colors that make sense for this component.\n   */\n  color: PropTypes.oneOf(['primary', 'secondary']),\n\n  /**\n   * If `true`, the transition animation is disabled.\n   */\n  disableAnimation: PropTypes.bool,\n\n  /**\n   * If `true`, apply disabled class.\n   */\n  disabled: PropTypes.bool,\n\n  /**\n   * If `true`, the label will be displayed in an error state.\n   */\n  error: PropTypes.bool,\n\n  /**\n   * If `true`, the input of this label is focused.\n   */\n  focused: PropTypes.bool,\n\n  /**\n   * If `dense`, will adjust vertical spacing. This is normally obtained via context from\n   * FormControl.\n   */\n  margin: PropTypes.oneOf(['dense']),\n\n  /**\n   * if `true`, the label will indicate that the input is required.\n   */\n  required: PropTypes.bool,\n\n  /**\n   * If `true`, the label is shrunk.\n   */\n  shrink: PropTypes.bool,\n\n  /**\n   * The variant to use.\n   */\n  variant: PropTypes.oneOf(['filled', 'outlined', 'standard'])\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiInputLabel'\n})(InputLabel);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport { isFilled, isAdornedStart } from '../InputBase/utils';\nimport withStyles from '../styles/withStyles';\nimport capitalize from '../utils/capitalize';\nimport isMuiElement from '../utils/isMuiElement';\nimport FormControlContext from './FormControlContext';\nexport var styles = {\n  /* Styles applied to the root element. */\n  root: {\n    display: 'inline-flex',\n    flexDirection: 'column',\n    position: 'relative',\n    // Reset fieldset default style.\n    minWidth: 0,\n    padding: 0,\n    margin: 0,\n    border: 0,\n    verticalAlign: 'top' // Fix alignment issue on Safari.\n\n  },\n\n  /* Styles applied to the root element if `margin=\"normal\"`. */\n  marginNormal: {\n    marginTop: 16,\n    marginBottom: 8\n  },\n\n  /* Styles applied to the root element if `margin=\"dense\"`. */\n  marginDense: {\n    marginTop: 8,\n    marginBottom: 4\n  },\n\n  /* Styles applied to the root element if `fullWidth={true}`. */\n  fullWidth: {\n    width: '100%'\n  }\n};\n/**\n * Provides context such as filled/focused/error/required for form inputs.\n * Relying on the context provides high flexibility and ensures that the state always stays\n * consistent across the children of the `FormControl`.\n * This context is used by the following components:\n *\n *  - FormLabel\n *  - FormHelperText\n *  - Input\n *  - InputLabel\n *\n * You can find one composition example below and more going to [the demos](/components/text-fields/#components).\n *\n * ```jsx\n * <FormControl>\n *   <InputLabel htmlFor=\"my-input\">Email address</InputLabel>\n *   <Input id=\"my-input\" aria-describedby=\"my-helper-text\" />\n *   <FormHelperText id=\"my-helper-text\">We'll never share your email.</FormHelperText>\n * </FormControl>\n * ```\n *\n * ⚠️Only one input can be used within a FormControl.\n */\n\nvar FormControl = /*#__PURE__*/React.forwardRef(function FormControl(props, ref) {\n  var children = props.children,\n      classes = props.classes,\n      className = props.className,\n      _props$color = props.color,\n      color = _props$color === void 0 ? 'primary' : _props$color,\n      _props$component = props.component,\n      Component = _props$component === void 0 ? 'div' : _props$component,\n      _props$disabled = props.disabled,\n      disabled = _props$disabled === void 0 ? false : _props$disabled,\n      _props$error = props.error,\n      error = _props$error === void 0 ? false : _props$error,\n      _props$fullWidth = props.fullWidth,\n      fullWidth = _props$fullWidth === void 0 ? false : _props$fullWidth,\n      visuallyFocused = props.focused,\n      _props$hiddenLabel = props.hiddenLabel,\n      hiddenLabel = _props$hiddenLabel === void 0 ? false : _props$hiddenLabel,\n      _props$margin = props.margin,\n      margin = _props$margin === void 0 ? 'none' : _props$margin,\n      _props$required = props.required,\n      required = _props$required === void 0 ? false : _props$required,\n      size = props.size,\n      _props$variant = props.variant,\n      variant = _props$variant === void 0 ? 'standard' : _props$variant,\n      other = _objectWithoutProperties(props, [\"children\", \"classes\", \"className\", \"color\", \"component\", \"disabled\", \"error\", \"fullWidth\", \"focused\", \"hiddenLabel\", \"margin\", \"required\", \"size\", \"variant\"]);\n\n  var _React$useState = React.useState(function () {\n    // We need to iterate through the children and find the Input in order\n    // to fully support server-side rendering.\n    var initialAdornedStart = false;\n\n    if (children) {\n      React.Children.forEach(children, function (child) {\n        if (!isMuiElement(child, ['Input', 'Select'])) {\n          return;\n        }\n\n        var input = isMuiElement(child, ['Select']) ? child.props.input : child;\n\n        if (input && isAdornedStart(input.props)) {\n          initialAdornedStart = true;\n        }\n      });\n    }\n\n    return initialAdornedStart;\n  }),\n      adornedStart = _React$useState[0],\n      setAdornedStart = _React$useState[1];\n\n  var _React$useState2 = React.useState(function () {\n    // We need to iterate through the children and find the Input in order\n    // to fully support server-side rendering.\n    var initialFilled = false;\n\n    if (children) {\n      React.Children.forEach(children, function (child) {\n        if (!isMuiElement(child, ['Input', 'Select'])) {\n          return;\n        }\n\n        if (isFilled(child.props, true)) {\n          initialFilled = true;\n        }\n      });\n    }\n\n    return initialFilled;\n  }),\n      filled = _React$useState2[0],\n      setFilled = _React$useState2[1];\n\n  var _React$useState3 = React.useState(false),\n      _focused = _React$useState3[0],\n      setFocused = _React$useState3[1];\n\n  var focused = visuallyFocused !== undefined ? visuallyFocused : _focused;\n\n  if (disabled && focused) {\n    setFocused(false);\n  }\n\n  var registerEffect;\n\n  if (process.env.NODE_ENV !== 'production') {\n    // eslint-disable-next-line react-hooks/rules-of-hooks\n    var registeredInput = React.useRef(false);\n\n    registerEffect = function registerEffect() {\n      if (registeredInput.current) {\n        console.error(['Material-UI: There are multiple InputBase components inside a FormControl.', 'This is not supported. It might cause infinite rendering loops.', 'Only use one InputBase.'].join('\\n'));\n      }\n\n      registeredInput.current = true;\n      return function () {\n        registeredInput.current = false;\n      };\n    };\n  }\n\n  var onFilled = React.useCallback(function () {\n    setFilled(true);\n  }, []);\n  var onEmpty = React.useCallback(function () {\n    setFilled(false);\n  }, []);\n  var childContext = {\n    adornedStart: adornedStart,\n    setAdornedStart: setAdornedStart,\n    color: color,\n    disabled: disabled,\n    error: error,\n    filled: filled,\n    focused: focused,\n    fullWidth: fullWidth,\n    hiddenLabel: hiddenLabel,\n    margin: (size === 'small' ? 'dense' : undefined) || margin,\n    onBlur: function onBlur() {\n      setFocused(false);\n    },\n    onEmpty: onEmpty,\n    onFilled: onFilled,\n    onFocus: function onFocus() {\n      setFocused(true);\n    },\n    registerEffect: registerEffect,\n    required: required,\n    variant: variant\n  };\n  return /*#__PURE__*/React.createElement(FormControlContext.Provider, {\n    value: childContext\n  }, /*#__PURE__*/React.createElement(Component, _extends({\n    className: clsx(classes.root, className, margin !== 'none' && classes[\"margin\".concat(capitalize(margin))], fullWidth && classes.fullWidth),\n    ref: ref\n  }, other), children));\n});\nprocess.env.NODE_ENV !== \"production\" ? FormControl.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * The contents of the form control.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The color of the component. It supports those theme colors that make sense for this component.\n   */\n  color: PropTypes.oneOf(['primary', 'secondary']),\n\n  /**\n   * The component used for the root node.\n   * Either a string to use a HTML element or a component.\n   */\n  component: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .elementType,\n\n  /**\n   * If `true`, the label, input and helper text should be displayed in a disabled state.\n   */\n  disabled: PropTypes.bool,\n\n  /**\n   * If `true`, the label should be displayed in an error state.\n   */\n  error: PropTypes.bool,\n\n  /**\n   * If `true`, the component will be displayed in focused state.\n   */\n  focused: PropTypes.bool,\n\n  /**\n   * If `true`, the component will take up the full width of its container.\n   */\n  fullWidth: PropTypes.bool,\n\n  /**\n   * If `true`, the label will be hidden.\n   * This is used to increase density for a `FilledInput`.\n   * Be sure to add `aria-label` to the `input` element.\n   */\n  hiddenLabel: PropTypes.bool,\n\n  /**\n   * If `dense` or `normal`, will adjust vertical spacing of this and contained components.\n   */\n  margin: PropTypes.oneOf(['dense', 'none', 'normal']),\n\n  /**\n   * If `true`, the label will indicate that the input is required.\n   */\n  required: PropTypes.bool,\n\n  /**\n   * The size of the text field.\n   */\n  size: PropTypes.oneOf(['medium', 'small']),\n\n  /**\n   * The variant to use.\n   */\n  variant: PropTypes.oneOf(['filled', 'outlined', 'standard'])\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiFormControl'\n})(FormControl);","import _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport _extends from \"@babel/runtime/helpers/esm/extends\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport formControlState from '../FormControl/formControlState';\nimport useFormControl from '../FormControl/useFormControl';\nimport withStyles from '../styles/withStyles';\nexport var styles = function styles(theme) {\n  return {\n    /* Styles applied to the root element. */\n    root: _extends({\n      color: theme.palette.text.secondary\n    }, theme.typography.caption, {\n      textAlign: 'left',\n      marginTop: 3,\n      margin: 0,\n      '&$disabled': {\n        color: theme.palette.text.disabled\n      },\n      '&$error': {\n        color: theme.palette.error.main\n      }\n    }),\n\n    /* Pseudo-class applied to the root element if `error={true}`. */\n    error: {},\n\n    /* Pseudo-class applied to the root element if `disabled={true}`. */\n    disabled: {},\n\n    /* Styles applied to the root element if `margin=\"dense\"`. */\n    marginDense: {\n      marginTop: 4\n    },\n\n    /* Styles applied to the root element if `variant=\"filled\"` or `variant=\"outlined\"`. */\n    contained: {\n      marginLeft: 14,\n      marginRight: 14\n    },\n\n    /* Pseudo-class applied to the root element if `focused={true}`. */\n    focused: {},\n\n    /* Pseudo-class applied to the root element if `filled={true}`. */\n    filled: {},\n\n    /* Pseudo-class applied to the root element if `required={true}`. */\n    required: {}\n  };\n};\nvar FormHelperText = /*#__PURE__*/React.forwardRef(function FormHelperText(props, ref) {\n  var children = props.children,\n      classes = props.classes,\n      className = props.className,\n      _props$component = props.component,\n      Component = _props$component === void 0 ? 'p' : _props$component,\n      disabled = props.disabled,\n      error = props.error,\n      filled = props.filled,\n      focused = props.focused,\n      margin = props.margin,\n      required = props.required,\n      variant = props.variant,\n      other = _objectWithoutProperties(props, [\"children\", \"classes\", \"className\", \"component\", \"disabled\", \"error\", \"filled\", \"focused\", \"margin\", \"required\", \"variant\"]);\n\n  var muiFormControl = useFormControl();\n  var fcs = formControlState({\n    props: props,\n    muiFormControl: muiFormControl,\n    states: ['variant', 'margin', 'disabled', 'error', 'filled', 'focused', 'required']\n  });\n  return /*#__PURE__*/React.createElement(Component, _extends({\n    className: clsx(classes.root, (fcs.variant === 'filled' || fcs.variant === 'outlined') && classes.contained, className, fcs.disabled && classes.disabled, fcs.error && classes.error, fcs.filled && classes.filled, fcs.focused && classes.focused, fcs.required && classes.required, fcs.margin === 'dense' && classes.marginDense),\n    ref: ref\n  }, other), children === ' ' ?\n  /*#__PURE__*/\n  // eslint-disable-next-line react/no-danger\n  React.createElement(\"span\", {\n    dangerouslySetInnerHTML: {\n      __html: '&#8203;'\n    }\n  }) : children);\n});\nprocess.env.NODE_ENV !== \"production\" ? FormHelperText.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * The content of the component.\n   *\n   * If `' '` is provided, the component reserves one line height for displaying a future message.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The component used for the root node.\n   * Either a string to use a HTML element or a component.\n   */\n  component: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .elementType,\n\n  /**\n   * If `true`, the helper text should be displayed in a disabled state.\n   */\n  disabled: PropTypes.bool,\n\n  /**\n   * If `true`, helper text should be displayed in an error state.\n   */\n  error: PropTypes.bool,\n\n  /**\n   * If `true`, the helper text should use filled classes key.\n   */\n  filled: PropTypes.bool,\n\n  /**\n   * If `true`, the helper text should use focused classes key.\n   */\n  focused: PropTypes.bool,\n\n  /**\n   * If `dense`, will adjust vertical spacing. This is normally obtained via context from\n   * FormControl.\n   */\n  margin: PropTypes.oneOf(['dense']),\n\n  /**\n   * If `true`, the helper text should use required classes key.\n   */\n  required: PropTypes.bool,\n\n  /**\n   * The variant to use.\n   */\n  variant: PropTypes.oneOf(['filled', 'outlined', 'standard'])\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiFormHelperText'\n})(FormHelperText);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _slicedToArray from \"@babel/runtime/helpers/esm/slicedToArray\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport _typeof from \"@babel/runtime/helpers/esm/typeof\";\nimport { formatMuiErrorMessage as _formatMuiErrorMessage } from \"@material-ui/utils\";\nimport * as React from 'react';\nimport { isFragment } from 'react-is';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport ownerDocument from '../utils/ownerDocument';\nimport capitalize from '../utils/capitalize';\nimport { refType } from '@material-ui/utils';\nimport Menu from '../Menu/Menu';\nimport { isFilled } from '../InputBase/utils';\nimport useForkRef from '../utils/useForkRef';\nimport useControlled from '../utils/useControlled';\n\nfunction areEqualValues(a, b) {\n  if (_typeof(b) === 'object' && b !== null) {\n    return a === b;\n  }\n\n  return String(a) === String(b);\n}\n\nfunction isEmpty(display) {\n  return display == null || typeof display === 'string' && !display.trim();\n}\n/**\n * @ignore - internal component.\n */\n\n\nvar SelectInput = /*#__PURE__*/React.forwardRef(function SelectInput(props, ref) {\n  var ariaLabel = props['aria-label'],\n      autoFocus = props.autoFocus,\n      autoWidth = props.autoWidth,\n      children = props.children,\n      classes = props.classes,\n      className = props.className,\n      defaultValue = props.defaultValue,\n      disabled = props.disabled,\n      displayEmpty = props.displayEmpty,\n      IconComponent = props.IconComponent,\n      inputRefProp = props.inputRef,\n      labelId = props.labelId,\n      _props$MenuProps = props.MenuProps,\n      MenuProps = _props$MenuProps === void 0 ? {} : _props$MenuProps,\n      multiple = props.multiple,\n      name = props.name,\n      onBlur = props.onBlur,\n      onChange = props.onChange,\n      onClose = props.onClose,\n      onFocus = props.onFocus,\n      onOpen = props.onOpen,\n      openProp = props.open,\n      readOnly = props.readOnly,\n      renderValue = props.renderValue,\n      _props$SelectDisplayP = props.SelectDisplayProps,\n      SelectDisplayProps = _props$SelectDisplayP === void 0 ? {} : _props$SelectDisplayP,\n      tabIndexProp = props.tabIndex,\n      type = props.type,\n      valueProp = props.value,\n      _props$variant = props.variant,\n      variant = _props$variant === void 0 ? 'standard' : _props$variant,\n      other = _objectWithoutProperties(props, [\"aria-label\", \"autoFocus\", \"autoWidth\", \"children\", \"classes\", \"className\", \"defaultValue\", \"disabled\", \"displayEmpty\", \"IconComponent\", \"inputRef\", \"labelId\", \"MenuProps\", \"multiple\", \"name\", \"onBlur\", \"onChange\", \"onClose\", \"onFocus\", \"onOpen\", \"open\", \"readOnly\", \"renderValue\", \"SelectDisplayProps\", \"tabIndex\", \"type\", \"value\", \"variant\"]);\n\n  var _useControlled = useControlled({\n    controlled: valueProp,\n    default: defaultValue,\n    name: 'Select'\n  }),\n      _useControlled2 = _slicedToArray(_useControlled, 2),\n      value = _useControlled2[0],\n      setValue = _useControlled2[1];\n\n  var inputRef = React.useRef(null);\n\n  var _React$useState = React.useState(null),\n      displayNode = _React$useState[0],\n      setDisplayNode = _React$useState[1];\n\n  var _React$useRef = React.useRef(openProp != null),\n      isOpenControlled = _React$useRef.current;\n\n  var _React$useState2 = React.useState(),\n      menuMinWidthState = _React$useState2[0],\n      setMenuMinWidthState = _React$useState2[1];\n\n  var _React$useState3 = React.useState(false),\n      openState = _React$useState3[0],\n      setOpenState = _React$useState3[1];\n\n  var handleRef = useForkRef(ref, inputRefProp);\n  React.useImperativeHandle(handleRef, function () {\n    return {\n      focus: function focus() {\n        displayNode.focus();\n      },\n      node: inputRef.current,\n      value: value\n    };\n  }, [displayNode, value]);\n  React.useEffect(function () {\n    if (autoFocus && displayNode) {\n      displayNode.focus();\n    }\n  }, [autoFocus, displayNode]);\n  React.useEffect(function () {\n    if (displayNode) {\n      var label = ownerDocument(displayNode).getElementById(labelId);\n\n      if (label) {\n        var handler = function handler() {\n          if (getSelection().isCollapsed) {\n            displayNode.focus();\n          }\n        };\n\n        label.addEventListener('click', handler);\n        return function () {\n          label.removeEventListener('click', handler);\n        };\n      }\n    }\n\n    return undefined;\n  }, [labelId, displayNode]);\n\n  var update = function update(open, event) {\n    if (open) {\n      if (onOpen) {\n        onOpen(event);\n      }\n    } else if (onClose) {\n      onClose(event);\n    }\n\n    if (!isOpenControlled) {\n      setMenuMinWidthState(autoWidth ? null : displayNode.clientWidth);\n      setOpenState(open);\n    }\n  };\n\n  var handleMouseDown = function handleMouseDown(event) {\n    // Ignore everything but left-click\n    if (event.button !== 0) {\n      return;\n    } // Hijack the default focus behavior.\n\n\n    event.preventDefault();\n    displayNode.focus();\n    update(true, event);\n  };\n\n  var handleClose = function handleClose(event) {\n    update(false, event);\n  };\n\n  var childrenArray = React.Children.toArray(children); // Support autofill.\n\n  var handleChange = function handleChange(event) {\n    var index = childrenArray.map(function (child) {\n      return child.props.value;\n    }).indexOf(event.target.value);\n\n    if (index === -1) {\n      return;\n    }\n\n    var child = childrenArray[index];\n    setValue(child.props.value);\n\n    if (onChange) {\n      onChange(event, child);\n    }\n  };\n\n  var handleItemClick = function handleItemClick(child) {\n    return function (event) {\n      if (!multiple) {\n        update(false, event);\n      }\n\n      var newValue;\n\n      if (multiple) {\n        newValue = Array.isArray(value) ? value.slice() : [];\n        var itemIndex = value.indexOf(child.props.value);\n\n        if (itemIndex === -1) {\n          newValue.push(child.props.value);\n        } else {\n          newValue.splice(itemIndex, 1);\n        }\n      } else {\n        newValue = child.props.value;\n      }\n\n      if (child.props.onClick) {\n        child.props.onClick(event);\n      }\n\n      if (value === newValue) {\n        return;\n      }\n\n      setValue(newValue);\n\n      if (onChange) {\n        event.persist(); // Preact support, target is read only property on a native event.\n\n        Object.defineProperty(event, 'target', {\n          writable: true,\n          value: {\n            value: newValue,\n            name: name\n          }\n        });\n        onChange(event, child);\n      }\n    };\n  };\n\n  var handleKeyDown = function handleKeyDown(event) {\n    if (!readOnly) {\n      var validKeys = [' ', 'ArrowUp', 'ArrowDown', // The native select doesn't respond to enter on MacOS, but it's recommended by\n      // https://www.w3.org/TR/wai-aria-practices/examples/listbox/listbox-collapsible.html\n      'Enter'];\n\n      if (validKeys.indexOf(event.key) !== -1) {\n        event.preventDefault();\n        update(true, event);\n      }\n    }\n  };\n\n  var open = displayNode !== null && (isOpenControlled ? openProp : openState);\n\n  var handleBlur = function handleBlur(event) {\n    // if open event.stopImmediatePropagation\n    if (!open && onBlur) {\n      event.persist(); // Preact support, target is read only property on a native event.\n\n      Object.defineProperty(event, 'target', {\n        writable: true,\n        value: {\n          value: value,\n          name: name\n        }\n      });\n      onBlur(event);\n    }\n  };\n\n  delete other['aria-invalid'];\n  var display;\n  var displaySingle;\n  var displayMultiple = [];\n  var computeDisplay = false;\n  var foundMatch = false; // No need to display any value if the field is empty.\n\n  if (isFilled({\n    value: value\n  }) || displayEmpty) {\n    if (renderValue) {\n      display = renderValue(value);\n    } else {\n      computeDisplay = true;\n    }\n  }\n\n  var items = childrenArray.map(function (child) {\n    if (! /*#__PURE__*/React.isValidElement(child)) {\n      return null;\n    }\n\n    if (process.env.NODE_ENV !== 'production') {\n      if (isFragment(child)) {\n        console.error([\"Material-UI: The Select component doesn't accept a Fragment as a child.\", 'Consider providing an array instead.'].join('\\n'));\n      }\n    }\n\n    var selected;\n\n    if (multiple) {\n      if (!Array.isArray(value)) {\n        throw new Error(process.env.NODE_ENV !== \"production\" ? \"Material-UI: The `value` prop must be an array when using the `Select` component with `multiple`.\" : _formatMuiErrorMessage(2));\n      }\n\n      selected = value.some(function (v) {\n        return areEqualValues(v, child.props.value);\n      });\n\n      if (selected && computeDisplay) {\n        displayMultiple.push(child.props.children);\n      }\n    } else {\n      selected = areEqualValues(value, child.props.value);\n\n      if (selected && computeDisplay) {\n        displaySingle = child.props.children;\n      }\n    }\n\n    if (selected) {\n      foundMatch = true;\n    }\n\n    return /*#__PURE__*/React.cloneElement(child, {\n      'aria-selected': selected ? 'true' : undefined,\n      onClick: handleItemClick(child),\n      onKeyUp: function onKeyUp(event) {\n        if (event.key === ' ') {\n          // otherwise our MenuItems dispatches a click event\n          // it's not behavior of the native <option> and causes\n          // the select to close immediately since we open on space keydown\n          event.preventDefault();\n        }\n\n        if (child.props.onKeyUp) {\n          child.props.onKeyUp(event);\n        }\n      },\n      role: 'option',\n      selected: selected,\n      value: undefined,\n      // The value is most likely not a valid HTML attribute.\n      'data-value': child.props.value // Instead, we provide it as a data attribute.\n\n    });\n  });\n\n  if (process.env.NODE_ENV !== 'production') {\n    // eslint-disable-next-line react-hooks/rules-of-hooks\n    React.useEffect(function () {\n      if (!foundMatch && !multiple && value !== '') {\n        var values = childrenArray.map(function (child) {\n          return child.props.value;\n        });\n        console.warn([\"Material-UI: You have provided an out-of-range value `\".concat(value, \"` for the select \").concat(name ? \"(name=\\\"\".concat(name, \"\\\") \") : '', \"component.\"), \"Consider providing a value that matches one of the available options or ''.\", \"The available values are \".concat(values.filter(function (x) {\n          return x != null;\n        }).map(function (x) {\n          return \"`\".concat(x, \"`\");\n        }).join(', ') || '\"\"', \".\")].join('\\n'));\n      }\n    }, [foundMatch, childrenArray, multiple, name, value]);\n  }\n\n  if (computeDisplay) {\n    display = multiple ? displayMultiple.join(', ') : displaySingle;\n  } // Avoid performing a layout computation in the render method.\n\n\n  var menuMinWidth = menuMinWidthState;\n\n  if (!autoWidth && isOpenControlled && displayNode) {\n    menuMinWidth = displayNode.clientWidth;\n  }\n\n  var tabIndex;\n\n  if (typeof tabIndexProp !== 'undefined') {\n    tabIndex = tabIndexProp;\n  } else {\n    tabIndex = disabled ? null : 0;\n  }\n\n  var buttonId = SelectDisplayProps.id || (name ? \"mui-component-select-\".concat(name) : undefined);\n  return /*#__PURE__*/React.createElement(React.Fragment, null, /*#__PURE__*/React.createElement(\"div\", _extends({\n    className: clsx(classes.root, // TODO v5: merge root and select\n    classes.select, classes.selectMenu, classes[variant], className, disabled && classes.disabled),\n    ref: setDisplayNode,\n    tabIndex: tabIndex,\n    role: \"button\",\n    \"aria-disabled\": disabled ? 'true' : undefined,\n    \"aria-expanded\": open ? 'true' : undefined,\n    \"aria-haspopup\": \"listbox\",\n    \"aria-label\": ariaLabel,\n    \"aria-labelledby\": [labelId, buttonId].filter(Boolean).join(' ') || undefined,\n    onKeyDown: handleKeyDown,\n    onMouseDown: disabled || readOnly ? null : handleMouseDown,\n    onBlur: handleBlur,\n    onFocus: onFocus\n  }, SelectDisplayProps, {\n    // The id is required for proper a11y\n    id: buttonId\n  }), isEmpty(display) ?\n  /*#__PURE__*/\n  // eslint-disable-next-line react/no-danger\n  React.createElement(\"span\", {\n    dangerouslySetInnerHTML: {\n      __html: '&#8203;'\n    }\n  }) : display), /*#__PURE__*/React.createElement(\"input\", _extends({\n    value: Array.isArray(value) ? value.join(',') : value,\n    name: name,\n    ref: inputRef,\n    \"aria-hidden\": true,\n    onChange: handleChange,\n    tabIndex: -1,\n    className: classes.nativeInput,\n    autoFocus: autoFocus\n  }, other)), /*#__PURE__*/React.createElement(IconComponent, {\n    className: clsx(classes.icon, classes[\"icon\".concat(capitalize(variant))], open && classes.iconOpen, disabled && classes.disabled)\n  }), /*#__PURE__*/React.createElement(Menu, _extends({\n    id: \"menu-\".concat(name || ''),\n    anchorEl: displayNode,\n    open: open,\n    onClose: handleClose\n  }, MenuProps, {\n    MenuListProps: _extends({\n      'aria-labelledby': labelId,\n      role: 'listbox',\n      disableListWrap: true\n    }, MenuProps.MenuListProps),\n    PaperProps: _extends({}, MenuProps.PaperProps, {\n      style: _extends({\n        minWidth: menuMinWidth\n      }, MenuProps.PaperProps != null ? MenuProps.PaperProps.style : null)\n    })\n  }), items));\n});\nprocess.env.NODE_ENV !== \"production\" ? SelectInput.propTypes = {\n  /**\n   * @ignore\n   */\n  'aria-label': PropTypes.string,\n\n  /**\n   * @ignore\n   */\n  autoFocus: PropTypes.bool,\n\n  /**\n   * If `true`, the width of the popover will automatically be set according to the items inside the\n   * menu, otherwise it will be at least the width of the select input.\n   */\n  autoWidth: PropTypes.bool,\n\n  /**\n   * The option elements to populate the select with.\n   * Can be some `<MenuItem>` elements.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object.isRequired,\n\n  /**\n   * The CSS class name of the select element.\n   */\n  className: PropTypes.string,\n\n  /**\n   * The default element value. Use when the component is not controlled.\n   */\n  defaultValue: PropTypes.any,\n\n  /**\n   * If `true`, the select will be disabled.\n   */\n  disabled: PropTypes.bool,\n\n  /**\n   * If `true`, the selected item is displayed even if its value is empty.\n   */\n  displayEmpty: PropTypes.bool,\n\n  /**\n   * The icon that displays the arrow.\n   */\n  IconComponent: PropTypes.elementType.isRequired,\n\n  /**\n   * Imperative handle implementing `{ value: T, node: HTMLElement, focus(): void }`\n   * Equivalent to `ref`\n   */\n  inputRef: refType,\n\n  /**\n   * The ID of an element that acts as an additional label. The Select will\n   * be labelled by the additional label and the selected value.\n   */\n  labelId: PropTypes.string,\n\n  /**\n   * Props applied to the [`Menu`](/api/menu/) element.\n   */\n  MenuProps: PropTypes.object,\n\n  /**\n   * If `true`, `value` must be an array and the menu will support multiple selections.\n   */\n  multiple: PropTypes.bool,\n\n  /**\n   * Name attribute of the `select` or hidden `input` element.\n   */\n  name: PropTypes.string,\n\n  /**\n   * @ignore\n   */\n  onBlur: PropTypes.func,\n\n  /**\n   * Callback function fired when a menu item is selected.\n   *\n   * @param {object} event The event source of the callback.\n   * You can pull out the new value by accessing `event.target.value` (any).\n   * @param {object} [child] The react element that was selected.\n   */\n  onChange: PropTypes.func,\n\n  /**\n   * Callback fired when the component requests to be closed.\n   * Use in controlled mode (see open).\n   *\n   * @param {object} event The event source of the callback.\n   */\n  onClose: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onFocus: PropTypes.func,\n\n  /**\n   * Callback fired when the component requests to be opened.\n   * Use in controlled mode (see open).\n   *\n   * @param {object} event The event source of the callback.\n   */\n  onOpen: PropTypes.func,\n\n  /**\n   * Control `select` open state.\n   */\n  open: PropTypes.bool,\n\n  /**\n   * @ignore\n   */\n  readOnly: PropTypes.bool,\n\n  /**\n   * Render the selected value.\n   *\n   * @param {any} value The `value` provided to the component.\n   * @returns {ReactNode}\n   */\n  renderValue: PropTypes.func,\n\n  /**\n   * Props applied to the clickable div element.\n   */\n  SelectDisplayProps: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  tabIndex: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * @ignore\n   */\n  type: PropTypes.any,\n\n  /**\n   * The input value.\n   */\n  value: PropTypes.any,\n\n  /**\n   * The variant to use.\n   */\n  variant: PropTypes.oneOf(['standard', 'outlined', 'filled'])\n} : void 0;\nexport default SelectInput;","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport { chainPropTypes } from '@material-ui/utils';\nimport withStyles from '../styles/withStyles';\nimport capitalize from '../utils/capitalize';\nexport var styles = function styles(theme) {\n  return {\n    /* Styles applied to the root element. */\n    root: {\n      userSelect: 'none',\n      width: '1em',\n      height: '1em',\n      display: 'inline-block',\n      fill: 'currentColor',\n      flexShrink: 0,\n      fontSize: theme.typography.pxToRem(24),\n      transition: theme.transitions.create('fill', {\n        duration: theme.transitions.duration.shorter\n      })\n    },\n\n    /* Styles applied to the root element if `color=\"primary\"`. */\n    colorPrimary: {\n      color: theme.palette.primary.main\n    },\n\n    /* Styles applied to the root element if `color=\"secondary\"`. */\n    colorSecondary: {\n      color: theme.palette.secondary.main\n    },\n\n    /* Styles applied to the root element if `color=\"action\"`. */\n    colorAction: {\n      color: theme.palette.action.active\n    },\n\n    /* Styles applied to the root element if `color=\"error\"`. */\n    colorError: {\n      color: theme.palette.error.main\n    },\n\n    /* Styles applied to the root element if `color=\"disabled\"`. */\n    colorDisabled: {\n      color: theme.palette.action.disabled\n    },\n\n    /* Styles applied to the root element if `fontSize=\"inherit\"`. */\n    fontSizeInherit: {\n      fontSize: 'inherit'\n    },\n\n    /* Styles applied to the root element if `fontSize=\"small\"`. */\n    fontSizeSmall: {\n      fontSize: theme.typography.pxToRem(20)\n    },\n\n    /* Styles applied to the root element if `fontSize=\"large\"`. */\n    fontSizeLarge: {\n      fontSize: theme.typography.pxToRem(35)\n    }\n  };\n};\nvar SvgIcon = /*#__PURE__*/React.forwardRef(function SvgIcon(props, ref) {\n  var children = props.children,\n      classes = props.classes,\n      className = props.className,\n      _props$color = props.color,\n      color = _props$color === void 0 ? 'inherit' : _props$color,\n      _props$component = props.component,\n      Component = _props$component === void 0 ? 'svg' : _props$component,\n      _props$fontSize = props.fontSize,\n      fontSize = _props$fontSize === void 0 ? 'medium' : _props$fontSize,\n      htmlColor = props.htmlColor,\n      titleAccess = props.titleAccess,\n      _props$viewBox = props.viewBox,\n      viewBox = _props$viewBox === void 0 ? '0 0 24 24' : _props$viewBox,\n      other = _objectWithoutProperties(props, [\"children\", \"classes\", \"className\", \"color\", \"component\", \"fontSize\", \"htmlColor\", \"titleAccess\", \"viewBox\"]);\n\n  return /*#__PURE__*/React.createElement(Component, _extends({\n    className: clsx(classes.root, className, color !== 'inherit' && classes[\"color\".concat(capitalize(color))], fontSize !== 'default' && fontSize !== 'medium' && classes[\"fontSize\".concat(capitalize(fontSize))]),\n    focusable: \"false\",\n    viewBox: viewBox,\n    color: htmlColor,\n    \"aria-hidden\": titleAccess ? undefined : true,\n    role: titleAccess ? 'img' : undefined,\n    ref: ref\n  }, other), children, titleAccess ? /*#__PURE__*/React.createElement(\"title\", null, titleAccess) : null);\n});\nprocess.env.NODE_ENV !== \"production\" ? SvgIcon.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * Node passed into the SVG element.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The color of the component. It supports those theme colors that make sense for this component.\n   * You can use the `htmlColor` prop to apply a color attribute to the SVG element.\n   */\n  color: PropTypes.oneOf(['action', 'disabled', 'error', 'inherit', 'primary', 'secondary']),\n\n  /**\n   * The component used for the root node.\n   * Either a string to use a HTML element or a component.\n   */\n  component: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .elementType,\n\n  /**\n   * The fontSize applied to the icon. Defaults to 24px, but can be configure to inherit font size.\n   */\n  fontSize: chainPropTypes(PropTypes.oneOf(['default', 'inherit', 'large', 'medium', 'small']), function (props) {\n    var fontSize = props.fontSize;\n\n    if (fontSize === 'default') {\n      throw new Error('Material-UI: `fontSize=\"default\"` is deprecated. Use `fontSize=\"medium\"` instead.');\n    }\n\n    return null;\n  }),\n\n  /**\n   * Applies a color attribute to the SVG element.\n   */\n  htmlColor: PropTypes.string,\n\n  /**\n   * The shape-rendering attribute. The behavior of the different options is described on the\n   * [MDN Web Docs](https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/shape-rendering).\n   * If you are having issues with blurry icons you should investigate this property.\n   */\n  shapeRendering: PropTypes.string,\n\n  /**\n   * Provides a human-readable title for the element that contains it.\n   * https://www.w3.org/TR/SVG-access/#Equivalent\n   */\n  titleAccess: PropTypes.string,\n\n  /**\n   * Allows you to redefine what the coordinates without units mean inside an SVG element.\n   * For example, if the SVG element is 500 (width) by 200 (height),\n   * and you pass viewBox=\"0 0 50 20\",\n   * this means that the coordinates inside the SVG will go from the top left corner (0,0)\n   * to bottom right (50,20) and each unit will be worth 10px.\n   */\n  viewBox: PropTypes.string\n} : void 0;\nSvgIcon.muiName = 'SvgIcon';\nexport default withStyles(styles, {\n  name: 'MuiSvgIcon'\n})(SvgIcon);","import * as React from 'react';\nimport createSvgIcon from '../../utils/createSvgIcon';\n/**\n * @ignore - internal component.\n */\n\nexport default createSvgIcon( /*#__PURE__*/React.createElement(\"path\", {\n  d: \"M7 10l5 5 5-5z\"\n}), 'ArrowDropDown');","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport React from 'react';\nimport SvgIcon from '../SvgIcon';\n/**\n * Private module reserved for @material-ui/x packages.\n */\n\nexport default function createSvgIcon(path, displayName) {\n  var Component = function Component(props, ref) {\n    return /*#__PURE__*/React.createElement(SvgIcon, _extends({\n      ref: ref\n    }, props), path);\n  };\n\n  if (process.env.NODE_ENV !== 'production') {\n    // Need to set `displayName` on the inner component for React.memo.\n    // React prior to 16.14 ignores `displayName` on the wrapper.\n    Component.displayName = \"\".concat(displayName, \"Icon\");\n  }\n\n  Component.muiName = SvgIcon.muiName;\n  return /*#__PURE__*/React.memo( /*#__PURE__*/React.forwardRef(Component));\n}","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport { refType } from '@material-ui/utils';\nimport capitalize from '../utils/capitalize';\n/**\n * @ignore - internal component.\n */\n\nvar NativeSelectInput = /*#__PURE__*/React.forwardRef(function NativeSelectInput(props, ref) {\n  var classes = props.classes,\n      className = props.className,\n      disabled = props.disabled,\n      IconComponent = props.IconComponent,\n      inputRef = props.inputRef,\n      _props$variant = props.variant,\n      variant = _props$variant === void 0 ? 'standard' : _props$variant,\n      other = _objectWithoutProperties(props, [\"classes\", \"className\", \"disabled\", \"IconComponent\", \"inputRef\", \"variant\"]);\n\n  return /*#__PURE__*/React.createElement(React.Fragment, null, /*#__PURE__*/React.createElement(\"select\", _extends({\n    className: clsx(classes.root, // TODO v5: merge root and select\n    classes.select, classes[variant], className, disabled && classes.disabled),\n    disabled: disabled,\n    ref: inputRef || ref\n  }, other)), props.multiple ? null : /*#__PURE__*/React.createElement(IconComponent, {\n    className: clsx(classes.icon, classes[\"icon\".concat(capitalize(variant))], disabled && classes.disabled)\n  }));\n});\nprocess.env.NODE_ENV !== \"production\" ? NativeSelectInput.propTypes = {\n  /**\n   * The option elements to populate the select with.\n   * Can be some `<option>` elements.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object.isRequired,\n\n  /**\n   * The CSS class name of the select element.\n   */\n  className: PropTypes.string,\n\n  /**\n   * If `true`, the select will be disabled.\n   */\n  disabled: PropTypes.bool,\n\n  /**\n   * The icon that displays the arrow.\n   */\n  IconComponent: PropTypes.elementType.isRequired,\n\n  /**\n   * Use that prop to pass a ref to the native select element.\n   * @deprecated\n   */\n  inputRef: refType,\n\n  /**\n   * @ignore\n   */\n  multiple: PropTypes.bool,\n\n  /**\n   * Name attribute of the `select` or hidden `input` element.\n   */\n  name: PropTypes.string,\n\n  /**\n   * Callback function fired when a menu item is selected.\n   *\n   * @param {object} event The event source of the callback.\n   * You can pull out the new value by accessing `event.target.value` (string).\n   */\n  onChange: PropTypes.func,\n\n  /**\n   * The input value.\n   */\n  value: PropTypes.any,\n\n  /**\n   * The variant to use.\n   */\n  variant: PropTypes.oneOf(['standard', 'outlined', 'filled'])\n} : void 0;\nexport default NativeSelectInput;","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport NativeSelectInput from './NativeSelectInput';\nimport withStyles from '../styles/withStyles';\nimport formControlState from '../FormControl/formControlState';\nimport useFormControl from '../FormControl/useFormControl';\nimport ArrowDropDownIcon from '../internal/svg-icons/ArrowDropDown';\nimport Input from '../Input';\nexport var styles = function styles(theme) {\n  return {\n    /* Styles applied to the select component `root` class. */\n    root: {},\n\n    /* Styles applied to the select component `select` class. */\n    select: {\n      '-moz-appearance': 'none',\n      // Reset\n      '-webkit-appearance': 'none',\n      // Reset\n      // When interacting quickly, the text can end up selected.\n      // Native select can't be selected either.\n      userSelect: 'none',\n      borderRadius: 0,\n      // Reset\n      minWidth: 16,\n      // So it doesn't collapse.\n      cursor: 'pointer',\n      '&:focus': {\n        // Show that it's not an text input\n        backgroundColor: theme.palette.type === 'light' ? 'rgba(0, 0, 0, 0.05)' : 'rgba(255, 255, 255, 0.05)',\n        borderRadius: 0 // Reset Chrome style\n\n      },\n      // Remove IE 11 arrow\n      '&::-ms-expand': {\n        display: 'none'\n      },\n      '&$disabled': {\n        cursor: 'default'\n      },\n      '&[multiple]': {\n        height: 'auto'\n      },\n      '&:not([multiple]) option, &:not([multiple]) optgroup': {\n        backgroundColor: theme.palette.background.paper\n      },\n      '&&': {\n        paddingRight: 24\n      }\n    },\n\n    /* Styles applied to the select component if `variant=\"filled\"`. */\n    filled: {\n      '&&': {\n        paddingRight: 32\n      }\n    },\n\n    /* Styles applied to the select component if `variant=\"outlined\"`. */\n    outlined: {\n      borderRadius: theme.shape.borderRadius,\n      '&&': {\n        paddingRight: 32\n      }\n    },\n\n    /* Styles applied to the select component `selectMenu` class. */\n    selectMenu: {\n      height: 'auto',\n      // Resets for multpile select with chips\n      minHeight: '1.1876em',\n      // Required for select\\text-field height consistency\n      textOverflow: 'ellipsis',\n      whiteSpace: 'nowrap',\n      overflow: 'hidden'\n    },\n\n    /* Pseudo-class applied to the select component `disabled` class. */\n    disabled: {},\n\n    /* Styles applied to the icon component. */\n    icon: {\n      // We use a position absolute over a flexbox in order to forward the pointer events\n      // to the input and to support wrapping tags..\n      position: 'absolute',\n      right: 0,\n      top: 'calc(50% - 12px)',\n      // Center vertically\n      pointerEvents: 'none',\n      // Don't block pointer events on the select under the icon.\n      color: theme.palette.action.active,\n      '&$disabled': {\n        color: theme.palette.action.disabled\n      }\n    },\n\n    /* Styles applied to the icon component if the popup is open. */\n    iconOpen: {\n      transform: 'rotate(180deg)'\n    },\n\n    /* Styles applied to the icon component if `variant=\"filled\"`. */\n    iconFilled: {\n      right: 7\n    },\n\n    /* Styles applied to the icon component if `variant=\"outlined\"`. */\n    iconOutlined: {\n      right: 7\n    },\n\n    /* Styles applied to the underlying native input component. */\n    nativeInput: {\n      bottom: 0,\n      left: 0,\n      position: 'absolute',\n      opacity: 0,\n      pointerEvents: 'none',\n      width: '100%'\n    }\n  };\n};\nvar defaultInput = /*#__PURE__*/React.createElement(Input, null);\n/**\n * An alternative to `<Select native />` with a much smaller bundle size footprint.\n */\n\nvar NativeSelect = /*#__PURE__*/React.forwardRef(function NativeSelect(props, ref) {\n  var children = props.children,\n      classes = props.classes,\n      _props$IconComponent = props.IconComponent,\n      IconComponent = _props$IconComponent === void 0 ? ArrowDropDownIcon : _props$IconComponent,\n      _props$input = props.input,\n      input = _props$input === void 0 ? defaultInput : _props$input,\n      inputProps = props.inputProps,\n      variant = props.variant,\n      other = _objectWithoutProperties(props, [\"children\", \"classes\", \"IconComponent\", \"input\", \"inputProps\", \"variant\"]);\n\n  var muiFormControl = useFormControl();\n  var fcs = formControlState({\n    props: props,\n    muiFormControl: muiFormControl,\n    states: ['variant']\n  });\n  return /*#__PURE__*/React.cloneElement(input, _extends({\n    // Most of the logic is implemented in `NativeSelectInput`.\n    // The `Select` component is a simple API wrapper to expose something better to play with.\n    inputComponent: NativeSelectInput,\n    inputProps: _extends({\n      children: children,\n      classes: classes,\n      IconComponent: IconComponent,\n      variant: fcs.variant,\n      type: undefined\n    }, inputProps, input ? input.props.inputProps : {}),\n    ref: ref\n  }, other));\n});\nprocess.env.NODE_ENV !== \"production\" ? NativeSelect.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * The option elements to populate the select with.\n   * Can be some `<option>` elements.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * The icon that displays the arrow.\n   */\n  IconComponent: PropTypes.elementType,\n\n  /**\n   * An `Input` element; does not have to be a material-ui specific `Input`.\n   */\n  input: PropTypes.element,\n\n  /**\n   * Attributes applied to the `select` element.\n   */\n  inputProps: PropTypes.object,\n\n  /**\n   * Callback function fired when a menu item is selected.\n   *\n   * @param {object} event The event source of the callback.\n   * You can pull out the new value by accessing `event.target.value` (string).\n   */\n  onChange: PropTypes.func,\n\n  /**\n   * The input value. The DOM API casts this to a string.\n   */\n  value: PropTypes.any,\n\n  /**\n   * The variant to use.\n   */\n  variant: PropTypes.oneOf(['filled', 'outlined', 'standard'])\n} : void 0;\nNativeSelect.muiName = 'Select';\nexport default withStyles(styles, {\n  name: 'MuiNativeSelect'\n})(NativeSelect);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport { mergeClasses } from '@material-ui/styles';\nimport SelectInput from './SelectInput';\nimport formControlState from '../FormControl/formControlState';\nimport useFormControl from '../FormControl/useFormControl';\nimport withStyles from '../styles/withStyles';\nimport ArrowDropDownIcon from '../internal/svg-icons/ArrowDropDown';\nimport Input from '../Input';\nimport { styles as nativeSelectStyles } from '../NativeSelect/NativeSelect';\nimport NativeSelectInput from '../NativeSelect/NativeSelectInput';\nimport FilledInput from '../FilledInput';\nimport OutlinedInput from '../OutlinedInput';\nexport var styles = nativeSelectStyles;\n\nvar _ref = /*#__PURE__*/React.createElement(Input, null);\n\nvar _ref2 = /*#__PURE__*/React.createElement(FilledInput, null);\n\nvar Select = /*#__PURE__*/React.forwardRef(function Select(props, ref) {\n  var _props$autoWidth = props.autoWidth,\n      autoWidth = _props$autoWidth === void 0 ? false : _props$autoWidth,\n      children = props.children,\n      classes = props.classes,\n      _props$displayEmpty = props.displayEmpty,\n      displayEmpty = _props$displayEmpty === void 0 ? false : _props$displayEmpty,\n      _props$IconComponent = props.IconComponent,\n      IconComponent = _props$IconComponent === void 0 ? ArrowDropDownIcon : _props$IconComponent,\n      id = props.id,\n      input = props.input,\n      inputProps = props.inputProps,\n      label = props.label,\n      labelId = props.labelId,\n      _props$labelWidth = props.labelWidth,\n      labelWidth = _props$labelWidth === void 0 ? 0 : _props$labelWidth,\n      MenuProps = props.MenuProps,\n      _props$multiple = props.multiple,\n      multiple = _props$multiple === void 0 ? false : _props$multiple,\n      _props$native = props.native,\n      native = _props$native === void 0 ? false : _props$native,\n      onClose = props.onClose,\n      onOpen = props.onOpen,\n      open = props.open,\n      renderValue = props.renderValue,\n      SelectDisplayProps = props.SelectDisplayProps,\n      _props$variant = props.variant,\n      variantProps = _props$variant === void 0 ? 'standard' : _props$variant,\n      other = _objectWithoutProperties(props, [\"autoWidth\", \"children\", \"classes\", \"displayEmpty\", \"IconComponent\", \"id\", \"input\", \"inputProps\", \"label\", \"labelId\", \"labelWidth\", \"MenuProps\", \"multiple\", \"native\", \"onClose\", \"onOpen\", \"open\", \"renderValue\", \"SelectDisplayProps\", \"variant\"]);\n\n  var inputComponent = native ? NativeSelectInput : SelectInput;\n  var muiFormControl = useFormControl();\n  var fcs = formControlState({\n    props: props,\n    muiFormControl: muiFormControl,\n    states: ['variant']\n  });\n  var variant = fcs.variant || variantProps;\n  var InputComponent = input || {\n    standard: _ref,\n    outlined: /*#__PURE__*/React.createElement(OutlinedInput, {\n      label: label,\n      labelWidth: labelWidth\n    }),\n    filled: _ref2\n  }[variant];\n  return /*#__PURE__*/React.cloneElement(InputComponent, _extends({\n    // Most of the logic is implemented in `SelectInput`.\n    // The `Select` component is a simple API wrapper to expose something better to play with.\n    inputComponent: inputComponent,\n    inputProps: _extends({\n      children: children,\n      IconComponent: IconComponent,\n      variant: variant,\n      type: undefined,\n      // We render a select. We can ignore the type provided by the `Input`.\n      multiple: multiple\n    }, native ? {\n      id: id\n    } : {\n      autoWidth: autoWidth,\n      displayEmpty: displayEmpty,\n      labelId: labelId,\n      MenuProps: MenuProps,\n      onClose: onClose,\n      onOpen: onOpen,\n      open: open,\n      renderValue: renderValue,\n      SelectDisplayProps: _extends({\n        id: id\n      }, SelectDisplayProps)\n    }, inputProps, {\n      classes: inputProps ? mergeClasses({\n        baseClasses: classes,\n        newClasses: inputProps.classes,\n        Component: Select\n      }) : classes\n    }, input ? input.props.inputProps : {}),\n    ref: ref\n  }, other));\n});\nprocess.env.NODE_ENV !== \"production\" ? Select.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * If `true`, the width of the popover will automatically be set according to the items inside the\n   * menu, otherwise it will be at least the width of the select input.\n   */\n  autoWidth: PropTypes.bool,\n\n  /**\n   * The option elements to populate the select with.\n   * Can be some `MenuItem` when `native` is false and `option` when `native` is true.\n   *\n   * ⚠️The `MenuItem` elements **must** be direct descendants when `native` is false.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * The default element value. Use when the component is not controlled.\n   */\n  defaultValue: PropTypes.any,\n\n  /**\n   * If `true`, a value is displayed even if no items are selected.\n   *\n   * In order to display a meaningful value, a function should be passed to the `renderValue` prop which returns the value to be displayed when no items are selected.\n   * You can only use it when the `native` prop is `false` (default).\n   */\n  displayEmpty: PropTypes.bool,\n\n  /**\n   * The icon that displays the arrow.\n   */\n  IconComponent: PropTypes.elementType,\n\n  /**\n   * The `id` of the wrapper element or the `select` element when `native`.\n   */\n  id: PropTypes.string,\n\n  /**\n   * An `Input` element; does not have to be a material-ui specific `Input`.\n   */\n  input: PropTypes.element,\n\n  /**\n   * [Attributes](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#Attributes) applied to the `input` element.\n   * When `native` is `true`, the attributes are applied on the `select` element.\n   */\n  inputProps: PropTypes.object,\n\n  /**\n   * See [OutlinedInput#label](/api/outlined-input/#props)\n   */\n  label: PropTypes.node,\n\n  /**\n   * The ID of an element that acts as an additional label. The Select will\n   * be labelled by the additional label and the selected value.\n   */\n  labelId: PropTypes.string,\n\n  /**\n   * See [OutlinedInput#label](/api/outlined-input/#props)\n   */\n  labelWidth: PropTypes.number,\n\n  /**\n   * Props applied to the [`Menu`](/api/menu/) element.\n   */\n  MenuProps: PropTypes.object,\n\n  /**\n   * If `true`, `value` must be an array and the menu will support multiple selections.\n   */\n  multiple: PropTypes.bool,\n\n  /**\n   * If `true`, the component will be using a native `select` element.\n   */\n  native: PropTypes.bool,\n\n  /**\n   * Callback function fired when a menu item is selected.\n   *\n   * @param {object} event The event source of the callback.\n   * You can pull out the new value by accessing `event.target.value` (any).\n   * @param {object} [child] The react element that was selected when `native` is `false` (default).\n   */\n  onChange: PropTypes.func,\n\n  /**\n   * Callback fired when the component requests to be closed.\n   * Use in controlled mode (see open).\n   *\n   * @param {object} event The event source of the callback.\n   */\n  onClose: PropTypes.func,\n\n  /**\n   * Callback fired when the component requests to be opened.\n   * Use in controlled mode (see open).\n   *\n   * @param {object} event The event source of the callback.\n   */\n  onOpen: PropTypes.func,\n\n  /**\n   * Control `select` open state.\n   * You can only use it when the `native` prop is `false` (default).\n   */\n  open: PropTypes.bool,\n\n  /**\n   * Render the selected value.\n   * You can only use it when the `native` prop is `false` (default).\n   *\n   * @param {any} value The `value` provided to the component.\n   * @returns {ReactNode}\n   */\n  renderValue: PropTypes.func,\n\n  /**\n   * Props applied to the clickable div element.\n   */\n  SelectDisplayProps: PropTypes.object,\n\n  /**\n   * The input value. Providing an empty string will select no options.\n   * This prop is required when the `native` prop is `false` (default).\n   * Set to an empty string `''` if you don't want any of the available options to be selected.\n   *\n   * If the value is an object it must have reference equality with the option in order to be selected.\n   * If the value is not an object, the string representation must match with the string representation of the option in order to be selected.\n   */\n  value: PropTypes.any,\n\n  /**\n   * The variant to use.\n   */\n  variant: PropTypes.oneOf(['filled', 'outlined', 'standard'])\n} : void 0;\nSelect.muiName = 'Select';\nexport default withStyles(styles, {\n  name: 'MuiSelect'\n})(Select);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport { refType } from '@material-ui/utils';\nimport Input from '../Input';\nimport FilledInput from '../FilledInput';\nimport OutlinedInput from '../OutlinedInput';\nimport InputLabel from '../InputLabel';\nimport FormControl from '../FormControl';\nimport FormHelperText from '../FormHelperText';\nimport Select from '../Select';\nimport withStyles from '../styles/withStyles';\nvar variantComponent = {\n  standard: Input,\n  filled: FilledInput,\n  outlined: OutlinedInput\n};\nexport var styles = {\n  /* Styles applied to the root element. */\n  root: {}\n};\n/**\n * The `TextField` is a convenience wrapper for the most common cases (80%).\n * It cannot be all things to all people, otherwise the API would grow out of control.\n *\n * ## Advanced Configuration\n *\n * It's important to understand that the text field is a simple abstraction\n * on top of the following components:\n *\n * - [FormControl](/api/form-control/)\n * - [InputLabel](/api/input-label/)\n * - [FilledInput](/api/filled-input/)\n * - [OutlinedInput](/api/outlined-input/)\n * - [Input](/api/input/)\n * - [FormHelperText](/api/form-helper-text/)\n *\n * If you wish to alter the props applied to the `input` element, you can do so as follows:\n *\n * ```jsx\n * const inputProps = {\n *   step: 300,\n * };\n *\n * return <TextField id=\"time\" type=\"time\" inputProps={inputProps} />;\n * ```\n *\n * For advanced cases, please look at the source of TextField by clicking on the\n * \"Edit this page\" button above. Consider either:\n *\n * - using the upper case props for passing values directly to the components\n * - using the underlying components directly as shown in the demos\n */\n\nvar TextField = /*#__PURE__*/React.forwardRef(function TextField(props, ref) {\n  var autoComplete = props.autoComplete,\n      _props$autoFocus = props.autoFocus,\n      autoFocus = _props$autoFocus === void 0 ? false : _props$autoFocus,\n      children = props.children,\n      classes = props.classes,\n      className = props.className,\n      _props$color = props.color,\n      color = _props$color === void 0 ? 'primary' : _props$color,\n      defaultValue = props.defaultValue,\n      _props$disabled = props.disabled,\n      disabled = _props$disabled === void 0 ? false : _props$disabled,\n      _props$error = props.error,\n      error = _props$error === void 0 ? false : _props$error,\n      FormHelperTextProps = props.FormHelperTextProps,\n      _props$fullWidth = props.fullWidth,\n      fullWidth = _props$fullWidth === void 0 ? false : _props$fullWidth,\n      helperText = props.helperText,\n      hiddenLabel = props.hiddenLabel,\n      id = props.id,\n      InputLabelProps = props.InputLabelProps,\n      inputProps = props.inputProps,\n      InputProps = props.InputProps,\n      inputRef = props.inputRef,\n      label = props.label,\n      _props$multiline = props.multiline,\n      multiline = _props$multiline === void 0 ? false : _props$multiline,\n      name = props.name,\n      onBlur = props.onBlur,\n      onChange = props.onChange,\n      onFocus = props.onFocus,\n      placeholder = props.placeholder,\n      _props$required = props.required,\n      required = _props$required === void 0 ? false : _props$required,\n      rows = props.rows,\n      rowsMax = props.rowsMax,\n      maxRows = props.maxRows,\n      minRows = props.minRows,\n      _props$select = props.select,\n      select = _props$select === void 0 ? false : _props$select,\n      SelectProps = props.SelectProps,\n      type = props.type,\n      value = props.value,\n      _props$variant = props.variant,\n      variant = _props$variant === void 0 ? 'standard' : _props$variant,\n      other = _objectWithoutProperties(props, [\"autoComplete\", \"autoFocus\", \"children\", \"classes\", \"className\", \"color\", \"defaultValue\", \"disabled\", \"error\", \"FormHelperTextProps\", \"fullWidth\", \"helperText\", \"hiddenLabel\", \"id\", \"InputLabelProps\", \"inputProps\", \"InputProps\", \"inputRef\", \"label\", \"multiline\", \"name\", \"onBlur\", \"onChange\", \"onFocus\", \"placeholder\", \"required\", \"rows\", \"rowsMax\", \"maxRows\", \"minRows\", \"select\", \"SelectProps\", \"type\", \"value\", \"variant\"]);\n\n  if (process.env.NODE_ENV !== 'production') {\n    if (select && !children) {\n      console.error('Material-UI: `children` must be passed when using the `TextField` component with `select`.');\n    }\n  }\n\n  var InputMore = {};\n\n  if (variant === 'outlined') {\n    if (InputLabelProps && typeof InputLabelProps.shrink !== 'undefined') {\n      InputMore.notched = InputLabelProps.shrink;\n    }\n\n    if (label) {\n      var _InputLabelProps$requ;\n\n      var displayRequired = (_InputLabelProps$requ = InputLabelProps === null || InputLabelProps === void 0 ? void 0 : InputLabelProps.required) !== null && _InputLabelProps$requ !== void 0 ? _InputLabelProps$requ : required;\n      InputMore.label = /*#__PURE__*/React.createElement(React.Fragment, null, label, displayRequired && \"\\xA0*\");\n    }\n  }\n\n  if (select) {\n    // unset defaults from textbox inputs\n    if (!SelectProps || !SelectProps.native) {\n      InputMore.id = undefined;\n    }\n\n    InputMore['aria-describedby'] = undefined;\n  }\n\n  var helperTextId = helperText && id ? \"\".concat(id, \"-helper-text\") : undefined;\n  var inputLabelId = label && id ? \"\".concat(id, \"-label\") : undefined;\n  var InputComponent = variantComponent[variant];\n  var InputElement = /*#__PURE__*/React.createElement(InputComponent, _extends({\n    \"aria-describedby\": helperTextId,\n    autoComplete: autoComplete,\n    autoFocus: autoFocus,\n    defaultValue: defaultValue,\n    fullWidth: fullWidth,\n    multiline: multiline,\n    name: name,\n    rows: rows,\n    rowsMax: rowsMax,\n    maxRows: maxRows,\n    minRows: minRows,\n    type: type,\n    value: value,\n    id: id,\n    inputRef: inputRef,\n    onBlur: onBlur,\n    onChange: onChange,\n    onFocus: onFocus,\n    placeholder: placeholder,\n    inputProps: inputProps\n  }, InputMore, InputProps));\n  return /*#__PURE__*/React.createElement(FormControl, _extends({\n    className: clsx(classes.root, className),\n    disabled: disabled,\n    error: error,\n    fullWidth: fullWidth,\n    hiddenLabel: hiddenLabel,\n    ref: ref,\n    required: required,\n    color: color,\n    variant: variant\n  }, other), label && /*#__PURE__*/React.createElement(InputLabel, _extends({\n    htmlFor: id,\n    id: inputLabelId\n  }, InputLabelProps), label), select ? /*#__PURE__*/React.createElement(Select, _extends({\n    \"aria-describedby\": helperTextId,\n    id: id,\n    labelId: inputLabelId,\n    value: value,\n    input: InputElement\n  }, SelectProps), children) : InputElement, helperText && /*#__PURE__*/React.createElement(FormHelperText, _extends({\n    id: helperTextId\n  }, FormHelperTextProps), helperText));\n});\nprocess.env.NODE_ENV !== \"production\" ? TextField.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * This prop helps users to fill forms faster, especially on mobile devices.\n   * The name can be confusing, as it's more like an autofill.\n   * You can learn more about it [following the specification](https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#autofill).\n   */\n  autoComplete: PropTypes.string,\n\n  /**\n   * If `true`, the `input` element will be focused during the first mount.\n   */\n  autoFocus: PropTypes.bool,\n\n  /**\n   * @ignore\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The color of the component. It supports those theme colors that make sense for this component.\n   */\n  color: PropTypes.oneOf(['primary', 'secondary']),\n\n  /**\n   * The default value of the `input` element.\n   */\n  defaultValue: PropTypes.any,\n\n  /**\n   * If `true`, the `input` element will be disabled.\n   */\n  disabled: PropTypes.bool,\n\n  /**\n   * If `true`, the label will be displayed in an error state.\n   */\n  error: PropTypes.bool,\n\n  /**\n   * Props applied to the [`FormHelperText`](/api/form-helper-text/) element.\n   */\n  FormHelperTextProps: PropTypes.object,\n\n  /**\n   * If `true`, the input will take up the full width of its container.\n   */\n  fullWidth: PropTypes.bool,\n\n  /**\n   * The helper text content.\n   */\n  helperText: PropTypes.node,\n\n  /**\n   * @ignore\n   */\n  hiddenLabel: PropTypes.bool,\n\n  /**\n   * The id of the `input` element.\n   * Use this prop to make `label` and `helperText` accessible for screen readers.\n   */\n  id: PropTypes.string,\n\n  /**\n   * Props applied to the [`InputLabel`](/api/input-label/) element.\n   */\n  InputLabelProps: PropTypes.object,\n\n  /**\n   * [Attributes](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#Attributes) applied to the `input` element.\n   */\n  inputProps: PropTypes.object,\n\n  /**\n   * Props applied to the Input element.\n   * It will be a [`FilledInput`](/api/filled-input/),\n   * [`OutlinedInput`](/api/outlined-input/) or [`Input`](/api/input/)\n   * component depending on the `variant` prop value.\n   */\n  InputProps: PropTypes.object,\n\n  /**\n   * Pass a ref to the `input` element.\n   */\n  inputRef: refType,\n\n  /**\n   * The label content.\n   */\n  label: PropTypes.node,\n\n  /**\n   * If `dense` or `normal`, will adjust vertical spacing of this and contained components.\n   */\n  margin: PropTypes.oneOf(['dense', 'none', 'normal']),\n\n  /**\n   * Maximum number of rows to display when multiline option is set to true.\n   */\n  maxRows: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * Minimum number of rows to display.\n   */\n  minRows: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * If `true`, a textarea element will be rendered instead of an input.\n   */\n  multiline: PropTypes.bool,\n\n  /**\n   * Name attribute of the `input` element.\n   */\n  name: PropTypes.string,\n\n  /**\n   * @ignore\n   */\n  onBlur: PropTypes.func,\n\n  /**\n   * Callback fired when the value is changed.\n   *\n   * @param {object} event The event source of the callback.\n   * You can pull out the new value by accessing `event.target.value` (string).\n   */\n  onChange: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onFocus: PropTypes.func,\n\n  /**\n   * The short hint displayed in the input before the user enters a value.\n   */\n  placeholder: PropTypes.string,\n\n  /**\n   * If `true`, the label is displayed as required and the `input` element` will be required.\n   */\n  required: PropTypes.bool,\n\n  /**\n   * Number of rows to display when multiline option is set to true.\n   * @deprecated Use `minRows` instead.\n   */\n  rows: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * Maximum number of rows to display.\n   * @deprecated Use `maxRows` instead.\n   */\n  rowsMax: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * Render a [`Select`](/api/select/) element while passing the Input element to `Select` as `input` parameter.\n   * If this option is set you must pass the options of the select as children.\n   */\n  select: PropTypes.bool,\n\n  /**\n   * Props applied to the [`Select`](/api/select/) element.\n   */\n  SelectProps: PropTypes.object,\n\n  /**\n   * The size of the text field.\n   */\n  size: PropTypes.oneOf(['medium', 'small']),\n\n  /**\n   * Type of the `input` element. It should be [a valid HTML5 input type](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#Form_%3Cinput%3E_types).\n   */\n  type: PropTypes.string,\n\n  /**\n   * The value of the `input` element, required for a controlled component.\n   */\n  value: PropTypes.any,\n\n  /**\n   * The variant to use.\n   */\n  variant: PropTypes.oneOf(['filled', 'outlined', 'standard'])\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiTextField'\n})(TextField);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _slicedToArray from \"@babel/runtime/helpers/esm/slicedToArray\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport clsx from 'clsx';\nimport PropTypes from 'prop-types';\nimport { chainPropTypes } from '@material-ui/utils';\nimport { Transition } from 'react-transition-group';\nimport withStyles from '../styles/withStyles';\nimport { duration } from '../styles/transitions';\nimport deprecatedPropType from '../utils/deprecatedPropType';\nimport { getTransitionProps } from '../transitions/utils';\nimport useTheme from '../styles/useTheme';\nimport { useForkRef } from '../utils';\nexport var styles = function styles(theme) {\n  return {\n    /* Styles applied to the root element. */\n    root: {\n      height: 0,\n      overflow: 'hidden',\n      transition: theme.transitions.create('height')\n    },\n\n    /* Styles applied to the root element when the transition has entered. */\n    entered: {\n      height: 'auto',\n      overflow: 'visible'\n    },\n\n    /* Styles applied to the root element when the transition has exited and `collapsedSize` != 0px. */\n    hidden: {\n      visibility: 'hidden'\n    },\n\n    /* Styles applied to the outer wrapper element. */\n    wrapper: {\n      // Hack to get children with a negative margin to not falsify the height computation.\n      display: 'flex'\n    },\n\n    /* Styles applied to the inner wrapper element. */\n    wrapperInner: {\n      width: '100%'\n    }\n  };\n};\n/**\n * The Collapse transition is used by the\n * [Vertical Stepper](/components/steppers/#vertical-stepper) StepContent component.\n * It uses [react-transition-group](https://github.com/reactjs/react-transition-group) internally.\n */\n\nvar Collapse = /*#__PURE__*/React.forwardRef(function Collapse(props, ref) {\n  var children = props.children,\n      classes = props.classes,\n      className = props.className,\n      collapsedHeight = props.collapsedHeight,\n      _props$collapsedSize = props.collapsedSize,\n      collapsedSizeProp = _props$collapsedSize === void 0 ? '0px' : _props$collapsedSize,\n      _props$component = props.component,\n      Component = _props$component === void 0 ? 'div' : _props$component,\n      _props$disableStrictM = props.disableStrictModeCompat,\n      disableStrictModeCompat = _props$disableStrictM === void 0 ? false : _props$disableStrictM,\n      inProp = props.in,\n      onEnter = props.onEnter,\n      onEntered = props.onEntered,\n      onEntering = props.onEntering,\n      onExit = props.onExit,\n      onExited = props.onExited,\n      onExiting = props.onExiting,\n      style = props.style,\n      _props$timeout = props.timeout,\n      timeout = _props$timeout === void 0 ? duration.standard : _props$timeout,\n      _props$TransitionComp = props.TransitionComponent,\n      TransitionComponent = _props$TransitionComp === void 0 ? Transition : _props$TransitionComp,\n      other = _objectWithoutProperties(props, [\"children\", \"classes\", \"className\", \"collapsedHeight\", \"collapsedSize\", \"component\", \"disableStrictModeCompat\", \"in\", \"onEnter\", \"onEntered\", \"onEntering\", \"onExit\", \"onExited\", \"onExiting\", \"style\", \"timeout\", \"TransitionComponent\"]);\n\n  var theme = useTheme();\n  var timer = React.useRef();\n  var wrapperRef = React.useRef(null);\n  var autoTransitionDuration = React.useRef();\n  var collapsedSize = typeof (collapsedHeight || collapsedSizeProp) === 'number' ? \"\".concat(collapsedHeight || collapsedSizeProp, \"px\") : collapsedHeight || collapsedSizeProp;\n  React.useEffect(function () {\n    return function () {\n      clearTimeout(timer.current);\n    };\n  }, []);\n  var enableStrictModeCompat = theme.unstable_strictMode && !disableStrictModeCompat;\n  var nodeRef = React.useRef(null);\n  var handleRef = useForkRef(ref, enableStrictModeCompat ? nodeRef : undefined);\n\n  var normalizedTransitionCallback = function normalizedTransitionCallback(callback) {\n    return function (nodeOrAppearing, maybeAppearing) {\n      if (callback) {\n        var _ref = enableStrictModeCompat ? [nodeRef.current, nodeOrAppearing] : [nodeOrAppearing, maybeAppearing],\n            _ref2 = _slicedToArray(_ref, 2),\n            node = _ref2[0],\n            isAppearing = _ref2[1]; // onEnterXxx and onExitXxx callbacks have a different arguments.length value.\n\n\n        if (isAppearing === undefined) {\n          callback(node);\n        } else {\n          callback(node, isAppearing);\n        }\n      }\n    };\n  };\n\n  var handleEnter = normalizedTransitionCallback(function (node, isAppearing) {\n    node.style.height = collapsedSize;\n\n    if (onEnter) {\n      onEnter(node, isAppearing);\n    }\n  });\n  var handleEntering = normalizedTransitionCallback(function (node, isAppearing) {\n    var wrapperHeight = wrapperRef.current ? wrapperRef.current.clientHeight : 0;\n\n    var _getTransitionProps = getTransitionProps({\n      style: style,\n      timeout: timeout\n    }, {\n      mode: 'enter'\n    }),\n        transitionDuration = _getTransitionProps.duration;\n\n    if (timeout === 'auto') {\n      var duration2 = theme.transitions.getAutoHeightDuration(wrapperHeight);\n      node.style.transitionDuration = \"\".concat(duration2, \"ms\");\n      autoTransitionDuration.current = duration2;\n    } else {\n      node.style.transitionDuration = typeof transitionDuration === 'string' ? transitionDuration : \"\".concat(transitionDuration, \"ms\");\n    }\n\n    node.style.height = \"\".concat(wrapperHeight, \"px\");\n\n    if (onEntering) {\n      onEntering(node, isAppearing);\n    }\n  });\n  var handleEntered = normalizedTransitionCallback(function (node, isAppearing) {\n    node.style.height = 'auto';\n\n    if (onEntered) {\n      onEntered(node, isAppearing);\n    }\n  });\n  var handleExit = normalizedTransitionCallback(function (node) {\n    var wrapperHeight = wrapperRef.current ? wrapperRef.current.clientHeight : 0;\n    node.style.height = \"\".concat(wrapperHeight, \"px\");\n\n    if (onExit) {\n      onExit(node);\n    }\n  });\n  var handleExited = normalizedTransitionCallback(onExited);\n  var handleExiting = normalizedTransitionCallback(function (node) {\n    var wrapperHeight = wrapperRef.current ? wrapperRef.current.clientHeight : 0;\n\n    var _getTransitionProps2 = getTransitionProps({\n      style: style,\n      timeout: timeout\n    }, {\n      mode: 'exit'\n    }),\n        transitionDuration = _getTransitionProps2.duration;\n\n    if (timeout === 'auto') {\n      var duration2 = theme.transitions.getAutoHeightDuration(wrapperHeight);\n      node.style.transitionDuration = \"\".concat(duration2, \"ms\");\n      autoTransitionDuration.current = duration2;\n    } else {\n      node.style.transitionDuration = typeof transitionDuration === 'string' ? transitionDuration : \"\".concat(transitionDuration, \"ms\");\n    }\n\n    node.style.height = collapsedSize;\n\n    if (onExiting) {\n      onExiting(node);\n    }\n  });\n\n  var addEndListener = function addEndListener(nodeOrNext, maybeNext) {\n    var next = enableStrictModeCompat ? nodeOrNext : maybeNext;\n\n    if (timeout === 'auto') {\n      timer.current = setTimeout(next, autoTransitionDuration.current || 0);\n    }\n  };\n\n  return /*#__PURE__*/React.createElement(TransitionComponent, _extends({\n    in: inProp,\n    onEnter: handleEnter,\n    onEntered: handleEntered,\n    onEntering: handleEntering,\n    onExit: handleExit,\n    onExited: handleExited,\n    onExiting: handleExiting,\n    addEndListener: addEndListener,\n    nodeRef: enableStrictModeCompat ? nodeRef : undefined,\n    timeout: timeout === 'auto' ? null : timeout\n  }, other), function (state, childProps) {\n    return /*#__PURE__*/React.createElement(Component, _extends({\n      className: clsx(classes.root, classes.container, className, {\n        'entered': classes.entered,\n        'exited': !inProp && collapsedSize === '0px' && classes.hidden\n      }[state]),\n      style: _extends({\n        minHeight: collapsedSize\n      }, style),\n      ref: handleRef\n    }, childProps), /*#__PURE__*/React.createElement(\"div\", {\n      className: classes.wrapper,\n      ref: wrapperRef\n    }, /*#__PURE__*/React.createElement(\"div\", {\n      className: classes.wrapperInner\n    }, children)));\n  });\n});\nprocess.env.NODE_ENV !== \"production\" ? Collapse.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * The content node to be collapsed.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: chainPropTypes(PropTypes.object, function (props) {\n    if (props.classes && props.classes.container) {\n      throw new Error(['Material-UI: the classes.container key is deprecated.', 'Use `classes.root` instead', 'The name of the pseudo-class was changed for consistency.'].join('\\n'));\n    }\n\n    return null;\n  }),\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The height of the container when collapsed.\n   * @deprecated The prop was renamed to support the addition of horizontal orientation, use `collapsedSize` instead.\n   */\n  collapsedHeight: deprecatedPropType(PropTypes.oneOfType([PropTypes.number, PropTypes.string]), 'The prop was renamed to support the vertical orientation, use `collapsedSize` instead'),\n\n  /**\n   * The height of the container when collapsed.\n   */\n  collapsedSize: PropTypes.oneOfType([PropTypes.number, PropTypes.string]),\n\n  /**\n   * The component used for the root node.\n   * Either a string to use a HTML element or a component.\n   */\n  component: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .elementType,\n\n  /**\n   * Enable this prop if you encounter 'Function components cannot be given refs',\n   * use `unstable_createStrictModeTheme`,\n   * and can't forward the ref in the passed `Component`.\n   */\n  disableStrictModeCompat: PropTypes.bool,\n\n  /**\n   * If `true`, the component will transition in.\n   */\n  in: PropTypes.bool,\n\n  /**\n   * @ignore\n   */\n  onEnter: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onEntered: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onEntering: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onExit: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onExited: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  onExiting: PropTypes.func,\n\n  /**\n   * @ignore\n   */\n  style: PropTypes.object,\n\n  /**\n   * The duration for the transition, in milliseconds.\n   * You may specify a single timeout for all transitions, or individually with an object.\n   *\n   * Set to 'auto' to automatically calculate transition time based on height.\n   */\n  timeout: PropTypes.oneOfType([PropTypes.oneOf(['auto']), PropTypes.number, PropTypes.shape({\n    appear: PropTypes.number,\n    enter: PropTypes.number,\n    exit: PropTypes.number\n  })])\n} : void 0;\nCollapse.muiSupportAuto = true;\nexport default withStyles(styles, {\n  name: 'MuiCollapse'\n})(Collapse);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _toArray from \"@babel/runtime/helpers/esm/toArray\";\nimport _slicedToArray from \"@babel/runtime/helpers/esm/slicedToArray\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport { isFragment } from 'react-is';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport { chainPropTypes } from '@material-ui/utils';\nimport Collapse from '../Collapse';\nimport Paper from '../Paper';\nimport withStyles from '../styles/withStyles';\nimport AccordionContext from './AccordionContext';\nimport useControlled from '../utils/useControlled';\nexport var styles = function styles(theme) {\n  var transition = {\n    duration: theme.transitions.duration.shortest\n  };\n  return {\n    /* Styles applied to the root element. */\n    root: {\n      position: 'relative',\n      transition: theme.transitions.create(['margin'], transition),\n      '&:before': {\n        position: 'absolute',\n        left: 0,\n        top: -1,\n        right: 0,\n        height: 1,\n        content: '\"\"',\n        opacity: 1,\n        backgroundColor: theme.palette.divider,\n        transition: theme.transitions.create(['opacity', 'background-color'], transition)\n      },\n      '&:first-child': {\n        '&:before': {\n          display: 'none'\n        }\n      },\n      '&$expanded': {\n        margin: '16px 0',\n        '&:first-child': {\n          marginTop: 0\n        },\n        '&:last-child': {\n          marginBottom: 0\n        },\n        '&:before': {\n          opacity: 0\n        }\n      },\n      '&$expanded + &': {\n        '&:before': {\n          display: 'none'\n        }\n      },\n      '&$disabled': {\n        backgroundColor: theme.palette.action.disabledBackground\n      }\n    },\n\n    /* Styles applied to the root element if `square={false}`. */\n    rounded: {\n      borderRadius: 0,\n      '&:first-child': {\n        borderTopLeftRadius: theme.shape.borderRadius,\n        borderTopRightRadius: theme.shape.borderRadius\n      },\n      '&:last-child': {\n        borderBottomLeftRadius: theme.shape.borderRadius,\n        borderBottomRightRadius: theme.shape.borderRadius,\n        // Fix a rendering issue on Edge\n        '@supports (-ms-ime-align: auto)': {\n          borderBottomLeftRadius: 0,\n          borderBottomRightRadius: 0\n        }\n      }\n    },\n\n    /* Styles applied to the root element if `expanded={true}`. */\n    expanded: {},\n\n    /* Styles applied to the root element if `disabled={true}`. */\n    disabled: {}\n  };\n};\nvar Accordion = /*#__PURE__*/React.forwardRef(function Accordion(props, ref) {\n  var childrenProp = props.children,\n      classes = props.classes,\n      className = props.className,\n      _props$defaultExpande = props.defaultExpanded,\n      defaultExpanded = _props$defaultExpande === void 0 ? false : _props$defaultExpande,\n      _props$disabled = props.disabled,\n      disabled = _props$disabled === void 0 ? false : _props$disabled,\n      expandedProp = props.expanded,\n      onChange = props.onChange,\n      _props$square = props.square,\n      square = _props$square === void 0 ? false : _props$square,\n      _props$TransitionComp = props.TransitionComponent,\n      TransitionComponent = _props$TransitionComp === void 0 ? Collapse : _props$TransitionComp,\n      TransitionProps = props.TransitionProps,\n      other = _objectWithoutProperties(props, [\"children\", \"classes\", \"className\", \"defaultExpanded\", \"disabled\", \"expanded\", \"onChange\", \"square\", \"TransitionComponent\", \"TransitionProps\"]);\n\n  var _useControlled = useControlled({\n    controlled: expandedProp,\n    default: defaultExpanded,\n    name: 'Accordion',\n    state: 'expanded'\n  }),\n      _useControlled2 = _slicedToArray(_useControlled, 2),\n      expanded = _useControlled2[0],\n      setExpandedState = _useControlled2[1];\n\n  var handleChange = React.useCallback(function (event) {\n    setExpandedState(!expanded);\n\n    if (onChange) {\n      onChange(event, !expanded);\n    }\n  }, [expanded, onChange, setExpandedState]);\n\n  var _React$Children$toArr = React.Children.toArray(childrenProp),\n      _React$Children$toArr2 = _toArray(_React$Children$toArr),\n      summary = _React$Children$toArr2[0],\n      children = _React$Children$toArr2.slice(1);\n\n  var contextValue = React.useMemo(function () {\n    return {\n      expanded: expanded,\n      disabled: disabled,\n      toggle: handleChange\n    };\n  }, [expanded, disabled, handleChange]);\n  return /*#__PURE__*/React.createElement(Paper, _extends({\n    className: clsx(classes.root, className, expanded && classes.expanded, disabled && classes.disabled, !square && classes.rounded),\n    ref: ref,\n    square: square\n  }, other), /*#__PURE__*/React.createElement(AccordionContext.Provider, {\n    value: contextValue\n  }, summary), /*#__PURE__*/React.createElement(TransitionComponent, _extends({\n    in: expanded,\n    timeout: \"auto\"\n  }, TransitionProps), /*#__PURE__*/React.createElement(\"div\", {\n    \"aria-labelledby\": summary.props.id,\n    id: summary.props['aria-controls'],\n    role: \"region\"\n  }, children)));\n});\nprocess.env.NODE_ENV !== \"production\" ? Accordion.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * The content of the accordion.\n   */\n  children: chainPropTypes(PropTypes.node.isRequired, function (props) {\n    var summary = React.Children.toArray(props.children)[0];\n\n    if (isFragment(summary)) {\n      return new Error(\"Material-UI: The Accordion doesn't accept a Fragment as a child. \" + 'Consider providing an array instead.');\n    }\n\n    if (! /*#__PURE__*/React.isValidElement(summary)) {\n      return new Error('Material-UI: Expected the first child of Accordion to be a valid element.');\n    }\n\n    return null;\n  }),\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * If `true`, expands the accordion by default.\n   */\n  defaultExpanded: PropTypes.bool,\n\n  /**\n   * If `true`, the accordion will be displayed in a disabled state.\n   */\n  disabled: PropTypes.bool,\n\n  /**\n   * If `true`, expands the accordion, otherwise collapse it.\n   * Setting this prop enables control over the accordion.\n   */\n  expanded: PropTypes.bool,\n\n  /**\n   * Callback fired when the expand/collapse state is changed.\n   *\n   * @param {object} event The event source of the callback.\n   * @param {boolean} expanded The `expanded` state of the accordion.\n   */\n  onChange: PropTypes.func,\n\n  /**\n   * If `true`, rounded corners are disabled.\n   */\n  square: PropTypes.bool,\n\n  /**\n   * The component used for the collapse effect.\n   * [Follow this guide](/components/transitions/#transitioncomponent-prop) to learn more about the requirements for this component.\n   */\n  TransitionComponent: PropTypes.elementType,\n\n  /**\n   * Props applied to the [`Transition`](http://reactcommunity.org/react-transition-group/transition#Transition-props) element.\n   */\n  TransitionProps: PropTypes.object\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiAccordion'\n})(Accordion);","import arrayWithHoles from \"./arrayWithHoles.js\";\nimport iterableToArray from \"./iterableToArray.js\";\nimport unsupportedIterableToArray from \"./unsupportedIterableToArray.js\";\nimport nonIterableRest from \"./nonIterableRest.js\";\nexport default function _toArray(arr) {\n  return arrayWithHoles(arr) || iterableToArray(arr) || unsupportedIterableToArray(arr) || nonIterableRest();\n}","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport PopperJs from 'popper.js';\nimport { chainPropTypes, refType, HTMLElementType } from '@material-ui/utils';\nimport { useTheme } from '@material-ui/styles';\nimport Portal from '../Portal';\nimport createChainedFunction from '../utils/createChainedFunction';\nimport setRef from '../utils/setRef';\nimport useForkRef from '../utils/useForkRef';\n\nfunction flipPlacement(placement, theme) {\n  var direction = theme && theme.direction || 'ltr';\n\n  if (direction === 'ltr') {\n    return placement;\n  }\n\n  switch (placement) {\n    case 'bottom-end':\n      return 'bottom-start';\n\n    case 'bottom-start':\n      return 'bottom-end';\n\n    case 'top-end':\n      return 'top-start';\n\n    case 'top-start':\n      return 'top-end';\n\n    default:\n      return placement;\n  }\n}\n\nfunction getAnchorEl(anchorEl) {\n  return typeof anchorEl === 'function' ? anchorEl() : anchorEl;\n}\n\nvar useEnhancedEffect = typeof window !== 'undefined' ? React.useLayoutEffect : React.useEffect;\nvar defaultPopperOptions = {};\n/**\n * Poppers rely on the 3rd party library [Popper.js](https://popper.js.org/docs/v1/) for positioning.\n */\n\nvar Popper = /*#__PURE__*/React.forwardRef(function Popper(props, ref) {\n  var anchorEl = props.anchorEl,\n      children = props.children,\n      container = props.container,\n      _props$disablePortal = props.disablePortal,\n      disablePortal = _props$disablePortal === void 0 ? false : _props$disablePortal,\n      _props$keepMounted = props.keepMounted,\n      keepMounted = _props$keepMounted === void 0 ? false : _props$keepMounted,\n      modifiers = props.modifiers,\n      open = props.open,\n      _props$placement = props.placement,\n      initialPlacement = _props$placement === void 0 ? 'bottom' : _props$placement,\n      _props$popperOptions = props.popperOptions,\n      popperOptions = _props$popperOptions === void 0 ? defaultPopperOptions : _props$popperOptions,\n      popperRefProp = props.popperRef,\n      style = props.style,\n      _props$transition = props.transition,\n      transition = _props$transition === void 0 ? false : _props$transition,\n      other = _objectWithoutProperties(props, [\"anchorEl\", \"children\", \"container\", \"disablePortal\", \"keepMounted\", \"modifiers\", \"open\", \"placement\", \"popperOptions\", \"popperRef\", \"style\", \"transition\"]);\n\n  var tooltipRef = React.useRef(null);\n  var ownRef = useForkRef(tooltipRef, ref);\n  var popperRef = React.useRef(null);\n  var handlePopperRef = useForkRef(popperRef, popperRefProp);\n  var handlePopperRefRef = React.useRef(handlePopperRef);\n  useEnhancedEffect(function () {\n    handlePopperRefRef.current = handlePopperRef;\n  }, [handlePopperRef]);\n  React.useImperativeHandle(popperRefProp, function () {\n    return popperRef.current;\n  }, []);\n\n  var _React$useState = React.useState(true),\n      exited = _React$useState[0],\n      setExited = _React$useState[1];\n\n  var theme = useTheme();\n  var rtlPlacement = flipPlacement(initialPlacement, theme);\n  /**\n   * placement initialized from prop but can change during lifetime if modifiers.flip.\n   * modifiers.flip is essentially a flip for controlled/uncontrolled behavior\n   */\n\n  var _React$useState2 = React.useState(rtlPlacement),\n      placement = _React$useState2[0],\n      setPlacement = _React$useState2[1];\n\n  React.useEffect(function () {\n    if (popperRef.current) {\n      popperRef.current.update();\n    }\n  });\n  var handleOpen = React.useCallback(function () {\n    if (!tooltipRef.current || !anchorEl || !open) {\n      return;\n    }\n\n    if (popperRef.current) {\n      popperRef.current.destroy();\n      handlePopperRefRef.current(null);\n    }\n\n    var handlePopperUpdate = function handlePopperUpdate(data) {\n      setPlacement(data.placement);\n    };\n\n    var resolvedAnchorEl = getAnchorEl(anchorEl);\n\n    if (process.env.NODE_ENV !== 'production') {\n      if (resolvedAnchorEl && resolvedAnchorEl.nodeType === 1) {\n        var box = resolvedAnchorEl.getBoundingClientRect();\n\n        if (process.env.NODE_ENV !== 'test' && box.top === 0 && box.left === 0 && box.right === 0 && box.bottom === 0) {\n          console.warn(['Material-UI: The `anchorEl` prop provided to the component is invalid.', 'The anchor element should be part of the document layout.', \"Make sure the element is present in the document or that it's not display none.\"].join('\\n'));\n        }\n      }\n    }\n\n    var popper = new PopperJs(getAnchorEl(anchorEl), tooltipRef.current, _extends({\n      placement: rtlPlacement\n    }, popperOptions, {\n      modifiers: _extends({}, disablePortal ? {} : {\n        // It's using scrollParent by default, we can use the viewport when using a portal.\n        preventOverflow: {\n          boundariesElement: 'window'\n        }\n      }, modifiers, popperOptions.modifiers),\n      // We could have been using a custom modifier like react-popper is doing.\n      // But it seems this is the best public API for this use case.\n      onCreate: createChainedFunction(handlePopperUpdate, popperOptions.onCreate),\n      onUpdate: createChainedFunction(handlePopperUpdate, popperOptions.onUpdate)\n    }));\n    handlePopperRefRef.current(popper);\n  }, [anchorEl, disablePortal, modifiers, open, rtlPlacement, popperOptions]);\n  var handleRef = React.useCallback(function (node) {\n    setRef(ownRef, node);\n    handleOpen();\n  }, [ownRef, handleOpen]);\n\n  var handleEnter = function handleEnter() {\n    setExited(false);\n  };\n\n  var handleClose = function handleClose() {\n    if (!popperRef.current) {\n      return;\n    }\n\n    popperRef.current.destroy();\n    handlePopperRefRef.current(null);\n  };\n\n  var handleExited = function handleExited() {\n    setExited(true);\n    handleClose();\n  };\n\n  React.useEffect(function () {\n    return function () {\n      handleClose();\n    };\n  }, []);\n  React.useEffect(function () {\n    if (!open && !transition) {\n      // Otherwise handleExited will call this.\n      handleClose();\n    }\n  }, [open, transition]);\n\n  if (!keepMounted && !open && (!transition || exited)) {\n    return null;\n  }\n\n  var childProps = {\n    placement: placement\n  };\n\n  if (transition) {\n    childProps.TransitionProps = {\n      in: open,\n      onEnter: handleEnter,\n      onExited: handleExited\n    };\n  }\n\n  return /*#__PURE__*/React.createElement(Portal, {\n    disablePortal: disablePortal,\n    container: container\n  }, /*#__PURE__*/React.createElement(\"div\", _extends({\n    ref: handleRef,\n    role: \"tooltip\"\n  }, other, {\n    style: _extends({\n      // Prevents scroll issue, waiting for Popper.js to add this style once initiated.\n      position: 'fixed',\n      // Fix Popper.js display issue\n      top: 0,\n      left: 0,\n      display: !open && keepMounted && !transition ? 'none' : null\n    }, style)\n  }), typeof children === 'function' ? children(childProps) : children));\n});\nprocess.env.NODE_ENV !== \"production\" ? Popper.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * A HTML element, [referenceObject](https://popper.js.org/docs/v1/#referenceObject),\n   * or a function that returns either.\n   * It's used to set the position of the popper.\n   * The return value will passed as the reference object of the Popper instance.\n   */\n  anchorEl: chainPropTypes(PropTypes.oneOfType([HTMLElementType, PropTypes.object, PropTypes.func]), function (props) {\n    if (props.open) {\n      var resolvedAnchorEl = getAnchorEl(props.anchorEl);\n\n      if (resolvedAnchorEl && resolvedAnchorEl.nodeType === 1) {\n        var box = resolvedAnchorEl.getBoundingClientRect();\n\n        if (process.env.NODE_ENV !== 'test' && box.top === 0 && box.left === 0 && box.right === 0 && box.bottom === 0) {\n          return new Error(['Material-UI: The `anchorEl` prop provided to the component is invalid.', 'The anchor element should be part of the document layout.', \"Make sure the element is present in the document or that it's not display none.\"].join('\\n'));\n        }\n      } else if (!resolvedAnchorEl || typeof resolvedAnchorEl.clientWidth !== 'number' || typeof resolvedAnchorEl.clientHeight !== 'number' || typeof resolvedAnchorEl.getBoundingClientRect !== 'function') {\n        return new Error(['Material-UI: The `anchorEl` prop provided to the component is invalid.', 'It should be an HTML element instance or a referenceObject ', '(https://popper.js.org/docs/v1/#referenceObject).'].join('\\n'));\n      }\n    }\n\n    return null;\n  }),\n\n  /**\n   * Popper render function or node.\n   */\n  children: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .oneOfType([PropTypes.node, PropTypes.func]).isRequired,\n\n  /**\n   * A HTML element, component instance, or function that returns either.\n   * The `container` will have the portal children appended to it.\n   *\n   * By default, it uses the body of the top-level document object,\n   * so it's simply `document.body` most of the time.\n   */\n  container: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .oneOfType([HTMLElementType, PropTypes.instanceOf(React.Component), PropTypes.func]),\n\n  /**\n   * Disable the portal behavior.\n   * The children stay within it's parent DOM hierarchy.\n   */\n  disablePortal: PropTypes.bool,\n\n  /**\n   * Always keep the children in the DOM.\n   * This prop can be useful in SEO situation or\n   * when you want to maximize the responsiveness of the Popper.\n   */\n  keepMounted: PropTypes.bool,\n\n  /**\n   * Popper.js is based on a \"plugin-like\" architecture,\n   * most of its features are fully encapsulated \"modifiers\".\n   *\n   * A modifier is a function that is called each time Popper.js needs to\n   * compute the position of the popper.\n   * For this reason, modifiers should be very performant to avoid bottlenecks.\n   * To learn how to create a modifier, [read the modifiers documentation](https://popper.js.org/docs/v1/#modifiers).\n   */\n  modifiers: PropTypes.object,\n\n  /**\n   * If `true`, the popper is visible.\n   */\n  open: PropTypes.bool.isRequired,\n\n  /**\n   * Popper placement.\n   */\n  placement: PropTypes.oneOf(['bottom-end', 'bottom-start', 'bottom', 'left-end', 'left-start', 'left', 'right-end', 'right-start', 'right', 'top-end', 'top-start', 'top']),\n\n  /**\n   * Options provided to the [`popper.js`](https://popper.js.org/docs/v1/) instance.\n   */\n  popperOptions: PropTypes.object,\n\n  /**\n   * A ref that points to the used popper instance.\n   */\n  popperRef: refType,\n\n  /**\n   * @ignore\n   */\n  style: PropTypes.object,\n\n  /**\n   * Help supporting a react-transition-group/Transition component.\n   */\n  transition: PropTypes.bool\n} : void 0;\nexport default Popper;","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _slicedToArray from \"@babel/runtime/helpers/esm/slicedToArray\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport _defineProperty from \"@babel/runtime/helpers/esm/defineProperty\";\nimport * as React from 'react';\nimport * as ReactDOM from 'react-dom';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport { deepmerge, elementAcceptingRef } from '@material-ui/utils';\nimport { alpha } from '../styles/colorManipulator';\nimport withStyles from '../styles/withStyles';\nimport capitalize from '../utils/capitalize';\nimport Grow from '../Grow';\nimport Popper from '../Popper';\nimport useForkRef from '../utils/useForkRef';\nimport useId from '../utils/unstable_useId';\nimport setRef from '../utils/setRef';\nimport useIsFocusVisible from '../utils/useIsFocusVisible';\nimport useControlled from '../utils/useControlled';\nimport useTheme from '../styles/useTheme';\n\nfunction round(value) {\n  return Math.round(value * 1e5) / 1e5;\n}\n\nfunction arrowGenerator() {\n  return {\n    '&[x-placement*=\"bottom\"] $arrow': {\n      top: 0,\n      left: 0,\n      marginTop: '-0.71em',\n      marginLeft: 4,\n      marginRight: 4,\n      '&::before': {\n        transformOrigin: '0 100%'\n      }\n    },\n    '&[x-placement*=\"top\"] $arrow': {\n      bottom: 0,\n      left: 0,\n      marginBottom: '-0.71em',\n      marginLeft: 4,\n      marginRight: 4,\n      '&::before': {\n        transformOrigin: '100% 0'\n      }\n    },\n    '&[x-placement*=\"right\"] $arrow': {\n      left: 0,\n      marginLeft: '-0.71em',\n      height: '1em',\n      width: '0.71em',\n      marginTop: 4,\n      marginBottom: 4,\n      '&::before': {\n        transformOrigin: '100% 100%'\n      }\n    },\n    '&[x-placement*=\"left\"] $arrow': {\n      right: 0,\n      marginRight: '-0.71em',\n      height: '1em',\n      width: '0.71em',\n      marginTop: 4,\n      marginBottom: 4,\n      '&::before': {\n        transformOrigin: '0 0'\n      }\n    }\n  };\n}\n\nexport var styles = function styles(theme) {\n  return {\n    /* Styles applied to the Popper component. */\n    popper: {\n      zIndex: theme.zIndex.tooltip,\n      pointerEvents: 'none' // disable jss-rtl plugin\n\n    },\n\n    /* Styles applied to the Popper component if `interactive={true}`. */\n    popperInteractive: {\n      pointerEvents: 'auto'\n    },\n\n    /* Styles applied to the Popper component if `arrow={true}`. */\n    popperArrow: arrowGenerator(),\n\n    /* Styles applied to the tooltip (label wrapper) element. */\n    tooltip: {\n      backgroundColor: alpha(theme.palette.grey[700], 0.9),\n      borderRadius: theme.shape.borderRadius,\n      color: theme.palette.common.white,\n      fontFamily: theme.typography.fontFamily,\n      padding: '4px 8px',\n      fontSize: theme.typography.pxToRem(10),\n      lineHeight: \"\".concat(round(14 / 10), \"em\"),\n      maxWidth: 300,\n      wordWrap: 'break-word',\n      fontWeight: theme.typography.fontWeightMedium\n    },\n\n    /* Styles applied to the tooltip (label wrapper) element if `arrow={true}`. */\n    tooltipArrow: {\n      position: 'relative',\n      margin: '0'\n    },\n\n    /* Styles applied to the arrow element. */\n    arrow: {\n      overflow: 'hidden',\n      position: 'absolute',\n      width: '1em',\n      height: '0.71em'\n      /* = width / sqrt(2) = (length of the hypotenuse) */\n      ,\n      boxSizing: 'border-box',\n      color: alpha(theme.palette.grey[700], 0.9),\n      '&::before': {\n        content: '\"\"',\n        margin: 'auto',\n        display: 'block',\n        width: '100%',\n        height: '100%',\n        backgroundColor: 'currentColor',\n        transform: 'rotate(45deg)'\n      }\n    },\n\n    /* Styles applied to the tooltip (label wrapper) element if the tooltip is opened by touch. */\n    touch: {\n      padding: '8px 16px',\n      fontSize: theme.typography.pxToRem(14),\n      lineHeight: \"\".concat(round(16 / 14), \"em\"),\n      fontWeight: theme.typography.fontWeightRegular\n    },\n\n    /* Styles applied to the tooltip (label wrapper) element if `placement` contains \"left\". */\n    tooltipPlacementLeft: _defineProperty({\n      transformOrigin: 'right center',\n      margin: '0 24px '\n    }, theme.breakpoints.up('sm'), {\n      margin: '0 14px'\n    }),\n\n    /* Styles applied to the tooltip (label wrapper) element if `placement` contains \"right\". */\n    tooltipPlacementRight: _defineProperty({\n      transformOrigin: 'left center',\n      margin: '0 24px'\n    }, theme.breakpoints.up('sm'), {\n      margin: '0 14px'\n    }),\n\n    /* Styles applied to the tooltip (label wrapper) element if `placement` contains \"top\". */\n    tooltipPlacementTop: _defineProperty({\n      transformOrigin: 'center bottom',\n      margin: '24px 0'\n    }, theme.breakpoints.up('sm'), {\n      margin: '14px 0'\n    }),\n\n    /* Styles applied to the tooltip (label wrapper) element if `placement` contains \"bottom\". */\n    tooltipPlacementBottom: _defineProperty({\n      transformOrigin: 'center top',\n      margin: '24px 0'\n    }, theme.breakpoints.up('sm'), {\n      margin: '14px 0'\n    })\n  };\n};\nvar hystersisOpen = false;\nvar hystersisTimer = null;\nexport function testReset() {\n  hystersisOpen = false;\n  clearTimeout(hystersisTimer);\n}\nvar Tooltip = /*#__PURE__*/React.forwardRef(function Tooltip(props, ref) {\n  var _props$arrow = props.arrow,\n      arrow = _props$arrow === void 0 ? false : _props$arrow,\n      children = props.children,\n      classes = props.classes,\n      _props$disableFocusLi = props.disableFocusListener,\n      disableFocusListener = _props$disableFocusLi === void 0 ? false : _props$disableFocusLi,\n      _props$disableHoverLi = props.disableHoverListener,\n      disableHoverListener = _props$disableHoverLi === void 0 ? false : _props$disableHoverLi,\n      _props$disableTouchLi = props.disableTouchListener,\n      disableTouchListener = _props$disableTouchLi === void 0 ? false : _props$disableTouchLi,\n      _props$enterDelay = props.enterDelay,\n      enterDelay = _props$enterDelay === void 0 ? 100 : _props$enterDelay,\n      _props$enterNextDelay = props.enterNextDelay,\n      enterNextDelay = _props$enterNextDelay === void 0 ? 0 : _props$enterNextDelay,\n      _props$enterTouchDela = props.enterTouchDelay,\n      enterTouchDelay = _props$enterTouchDela === void 0 ? 700 : _props$enterTouchDela,\n      idProp = props.id,\n      _props$interactive = props.interactive,\n      interactive = _props$interactive === void 0 ? false : _props$interactive,\n      _props$leaveDelay = props.leaveDelay,\n      leaveDelay = _props$leaveDelay === void 0 ? 0 : _props$leaveDelay,\n      _props$leaveTouchDela = props.leaveTouchDelay,\n      leaveTouchDelay = _props$leaveTouchDela === void 0 ? 1500 : _props$leaveTouchDela,\n      onClose = props.onClose,\n      onOpen = props.onOpen,\n      openProp = props.open,\n      _props$placement = props.placement,\n      placement = _props$placement === void 0 ? 'bottom' : _props$placement,\n      _props$PopperComponen = props.PopperComponent,\n      PopperComponent = _props$PopperComponen === void 0 ? Popper : _props$PopperComponen,\n      PopperProps = props.PopperProps,\n      title = props.title,\n      _props$TransitionComp = props.TransitionComponent,\n      TransitionComponent = _props$TransitionComp === void 0 ? Grow : _props$TransitionComp,\n      TransitionProps = props.TransitionProps,\n      other = _objectWithoutProperties(props, [\"arrow\", \"children\", \"classes\", \"disableFocusListener\", \"disableHoverListener\", \"disableTouchListener\", \"enterDelay\", \"enterNextDelay\", \"enterTouchDelay\", \"id\", \"interactive\", \"leaveDelay\", \"leaveTouchDelay\", \"onClose\", \"onOpen\", \"open\", \"placement\", \"PopperComponent\", \"PopperProps\", \"title\", \"TransitionComponent\", \"TransitionProps\"]);\n\n  var theme = useTheme();\n\n  var _React$useState = React.useState(),\n      childNode = _React$useState[0],\n      setChildNode = _React$useState[1];\n\n  var _React$useState2 = React.useState(null),\n      arrowRef = _React$useState2[0],\n      setArrowRef = _React$useState2[1];\n\n  var ignoreNonTouchEvents = React.useRef(false);\n  var closeTimer = React.useRef();\n  var enterTimer = React.useRef();\n  var leaveTimer = React.useRef();\n  var touchTimer = React.useRef();\n\n  var _useControlled = useControlled({\n    controlled: openProp,\n    default: false,\n    name: 'Tooltip',\n    state: 'open'\n  }),\n      _useControlled2 = _slicedToArray(_useControlled, 2),\n      openState = _useControlled2[0],\n      setOpenState = _useControlled2[1];\n\n  var open = openState;\n\n  if (process.env.NODE_ENV !== 'production') {\n    // eslint-disable-next-line react-hooks/rules-of-hooks\n    var _React$useRef = React.useRef(openProp !== undefined),\n        isControlled = _React$useRef.current; // eslint-disable-next-line react-hooks/rules-of-hooks\n\n\n    React.useEffect(function () {\n      if (childNode && childNode.disabled && !isControlled && title !== '' && childNode.tagName.toLowerCase() === 'button') {\n        console.error(['Material-UI: You are providing a disabled `button` child to the Tooltip component.', 'A disabled element does not fire events.', \"Tooltip needs to listen to the child element's events to display the title.\", '', 'Add a simple wrapper element, such as a `span`.'].join('\\n'));\n      }\n    }, [title, childNode, isControlled]);\n  }\n\n  var id = useId(idProp);\n  React.useEffect(function () {\n    return function () {\n      clearTimeout(closeTimer.current);\n      clearTimeout(enterTimer.current);\n      clearTimeout(leaveTimer.current);\n      clearTimeout(touchTimer.current);\n    };\n  }, []);\n\n  var handleOpen = function handleOpen(event) {\n    clearTimeout(hystersisTimer);\n    hystersisOpen = true; // The mouseover event will trigger for every nested element in the tooltip.\n    // We can skip rerendering when the tooltip is already open.\n    // We are using the mouseover event instead of the mouseenter event to fix a hide/show issue.\n\n    setOpenState(true);\n\n    if (onOpen) {\n      onOpen(event);\n    }\n  };\n\n  var handleEnter = function handleEnter() {\n    var forward = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : true;\n    return function (event) {\n      var childrenProps = children.props;\n\n      if (event.type === 'mouseover' && childrenProps.onMouseOver && forward) {\n        childrenProps.onMouseOver(event);\n      }\n\n      if (ignoreNonTouchEvents.current && event.type !== 'touchstart') {\n        return;\n      } // Remove the title ahead of time.\n      // We don't want to wait for the next render commit.\n      // We would risk displaying two tooltips at the same time (native + this one).\n\n\n      if (childNode) {\n        childNode.removeAttribute('title');\n      }\n\n      clearTimeout(enterTimer.current);\n      clearTimeout(leaveTimer.current);\n\n      if (enterDelay || hystersisOpen && enterNextDelay) {\n        event.persist();\n        enterTimer.current = setTimeout(function () {\n          handleOpen(event);\n        }, hystersisOpen ? enterNextDelay : enterDelay);\n      } else {\n        handleOpen(event);\n      }\n    };\n  };\n\n  var _useIsFocusVisible = useIsFocusVisible(),\n      isFocusVisible = _useIsFocusVisible.isFocusVisible,\n      onBlurVisible = _useIsFocusVisible.onBlurVisible,\n      focusVisibleRef = _useIsFocusVisible.ref;\n\n  var _React$useState3 = React.useState(false),\n      childIsFocusVisible = _React$useState3[0],\n      setChildIsFocusVisible = _React$useState3[1];\n\n  var handleBlur = function handleBlur() {\n    if (childIsFocusVisible) {\n      setChildIsFocusVisible(false);\n      onBlurVisible();\n    }\n  };\n\n  var handleFocus = function handleFocus() {\n    var forward = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : true;\n    return function (event) {\n      // Workaround for https://github.com/facebook/react/issues/7769\n      // The autoFocus of React might trigger the event before the componentDidMount.\n      // We need to account for this eventuality.\n      if (!childNode) {\n        setChildNode(event.currentTarget);\n      }\n\n      if (isFocusVisible(event)) {\n        setChildIsFocusVisible(true);\n        handleEnter()(event);\n      }\n\n      var childrenProps = children.props;\n\n      if (childrenProps.onFocus && forward) {\n        childrenProps.onFocus(event);\n      }\n    };\n  };\n\n  var handleClose = function handleClose(event) {\n    clearTimeout(hystersisTimer);\n    hystersisTimer = setTimeout(function () {\n      hystersisOpen = false;\n    }, 800 + leaveDelay);\n    setOpenState(false);\n\n    if (onClose) {\n      onClose(event);\n    }\n\n    clearTimeout(closeTimer.current);\n    closeTimer.current = setTimeout(function () {\n      ignoreNonTouchEvents.current = false;\n    }, theme.transitions.duration.shortest);\n  };\n\n  var handleLeave = function handleLeave() {\n    var forward = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : true;\n    return function (event) {\n      var childrenProps = children.props;\n\n      if (event.type === 'blur') {\n        if (childrenProps.onBlur && forward) {\n          childrenProps.onBlur(event);\n        }\n\n        handleBlur();\n      }\n\n      if (event.type === 'mouseleave' && childrenProps.onMouseLeave && event.currentTarget === childNode) {\n        childrenProps.onMouseLeave(event);\n      }\n\n      clearTimeout(enterTimer.current);\n      clearTimeout(leaveTimer.current);\n      event.persist();\n      leaveTimer.current = setTimeout(function () {\n        handleClose(event);\n      }, leaveDelay);\n    };\n  };\n\n  var detectTouchStart = function detectTouchStart(event) {\n    ignoreNonTouchEvents.current = true;\n    var childrenProps = children.props;\n\n    if (childrenProps.onTouchStart) {\n      childrenProps.onTouchStart(event);\n    }\n  };\n\n  var handleTouchStart = function handleTouchStart(event) {\n    detectTouchStart(event);\n    clearTimeout(leaveTimer.current);\n    clearTimeout(closeTimer.current);\n    clearTimeout(touchTimer.current);\n    event.persist();\n    touchTimer.current = setTimeout(function () {\n      handleEnter()(event);\n    }, enterTouchDelay);\n  };\n\n  var handleTouchEnd = function handleTouchEnd(event) {\n    if (children.props.onTouchEnd) {\n      children.props.onTouchEnd(event);\n    }\n\n    clearTimeout(touchTimer.current);\n    clearTimeout(leaveTimer.current);\n    event.persist();\n    leaveTimer.current = setTimeout(function () {\n      handleClose(event);\n    }, leaveTouchDelay);\n  };\n\n  var handleUseRef = useForkRef(setChildNode, ref);\n  var handleFocusRef = useForkRef(focusVisibleRef, handleUseRef); // can be removed once we drop support for non ref forwarding class components\n\n  var handleOwnRef = React.useCallback(function (instance) {\n    // #StrictMode ready\n    setRef(handleFocusRef, ReactDOM.findDOMNode(instance));\n  }, [handleFocusRef]);\n  var handleRef = useForkRef(children.ref, handleOwnRef); // There is no point in displaying an empty tooltip.\n\n  if (title === '') {\n    open = false;\n  } // For accessibility and SEO concerns, we render the title to the DOM node when\n  // the tooltip is hidden. However, we have made a tradeoff when\n  // `disableHoverListener` is set. This title logic is disabled.\n  // It's allowing us to keep the implementation size minimal.\n  // We are open to change the tradeoff.\n\n\n  var shouldShowNativeTitle = !open && !disableHoverListener;\n\n  var childrenProps = _extends({\n    'aria-describedby': open ? id : null,\n    title: shouldShowNativeTitle && typeof title === 'string' ? title : null\n  }, other, children.props, {\n    className: clsx(other.className, children.props.className),\n    onTouchStart: detectTouchStart,\n    ref: handleRef\n  });\n\n  var interactiveWrapperListeners = {};\n\n  if (!disableTouchListener) {\n    childrenProps.onTouchStart = handleTouchStart;\n    childrenProps.onTouchEnd = handleTouchEnd;\n  }\n\n  if (!disableHoverListener) {\n    childrenProps.onMouseOver = handleEnter();\n    childrenProps.onMouseLeave = handleLeave();\n\n    if (interactive) {\n      interactiveWrapperListeners.onMouseOver = handleEnter(false);\n      interactiveWrapperListeners.onMouseLeave = handleLeave(false);\n    }\n  }\n\n  if (!disableFocusListener) {\n    childrenProps.onFocus = handleFocus();\n    childrenProps.onBlur = handleLeave();\n\n    if (interactive) {\n      interactiveWrapperListeners.onFocus = handleFocus(false);\n      interactiveWrapperListeners.onBlur = handleLeave(false);\n    }\n  }\n\n  if (process.env.NODE_ENV !== 'production') {\n    if (children.props.title) {\n      console.error(['Material-UI: You have provided a `title` prop to the child of <Tooltip />.', \"Remove this title prop `\".concat(children.props.title, \"` or the Tooltip component.\")].join('\\n'));\n    }\n  }\n\n  var mergedPopperProps = React.useMemo(function () {\n    return deepmerge({\n      popperOptions: {\n        modifiers: {\n          arrow: {\n            enabled: Boolean(arrowRef),\n            element: arrowRef\n          }\n        }\n      }\n    }, PopperProps);\n  }, [arrowRef, PopperProps]);\n  return /*#__PURE__*/React.createElement(React.Fragment, null, /*#__PURE__*/React.cloneElement(children, childrenProps), /*#__PURE__*/React.createElement(PopperComponent, _extends({\n    className: clsx(classes.popper, interactive && classes.popperInteractive, arrow && classes.popperArrow),\n    placement: placement,\n    anchorEl: childNode,\n    open: childNode ? open : false,\n    id: childrenProps['aria-describedby'],\n    transition: true\n  }, interactiveWrapperListeners, mergedPopperProps), function (_ref) {\n    var placementInner = _ref.placement,\n        TransitionPropsInner = _ref.TransitionProps;\n    return /*#__PURE__*/React.createElement(TransitionComponent, _extends({\n      timeout: theme.transitions.duration.shorter\n    }, TransitionPropsInner, TransitionProps), /*#__PURE__*/React.createElement(\"div\", {\n      className: clsx(classes.tooltip, classes[\"tooltipPlacement\".concat(capitalize(placementInner.split('-')[0]))], ignoreNonTouchEvents.current && classes.touch, arrow && classes.tooltipArrow)\n    }, title, arrow ? /*#__PURE__*/React.createElement(\"span\", {\n      className: classes.arrow,\n      ref: setArrowRef\n    }) : null));\n  }));\n});\nprocess.env.NODE_ENV !== \"production\" ? Tooltip.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * If `true`, adds an arrow to the tooltip.\n   */\n  arrow: PropTypes.bool,\n\n  /**\n   * Tooltip reference element.\n   */\n  children: elementAcceptingRef.isRequired,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * Do not respond to focus events.\n   */\n  disableFocusListener: PropTypes.bool,\n\n  /**\n   * Do not respond to hover events.\n   */\n  disableHoverListener: PropTypes.bool,\n\n  /**\n   * Do not respond to long press touch events.\n   */\n  disableTouchListener: PropTypes.bool,\n\n  /**\n   * The number of milliseconds to wait before showing the tooltip.\n   * This prop won't impact the enter touch delay (`enterTouchDelay`).\n   */\n  enterDelay: PropTypes.number,\n\n  /**\n   * The number of milliseconds to wait before showing the tooltip when one was already recently opened.\n   */\n  enterNextDelay: PropTypes.number,\n\n  /**\n   * The number of milliseconds a user must touch the element before showing the tooltip.\n   */\n  enterTouchDelay: PropTypes.number,\n\n  /**\n   * This prop is used to help implement the accessibility logic.\n   * If you don't provide this prop. It falls back to a randomly generated id.\n   */\n  id: PropTypes.string,\n\n  /**\n   * Makes a tooltip interactive, i.e. will not close when the user\n   * hovers over the tooltip before the `leaveDelay` is expired.\n   */\n  interactive: PropTypes.bool,\n\n  /**\n   * The number of milliseconds to wait before hiding the tooltip.\n   * This prop won't impact the leave touch delay (`leaveTouchDelay`).\n   */\n  leaveDelay: PropTypes.number,\n\n  /**\n   * The number of milliseconds after the user stops touching an element before hiding the tooltip.\n   */\n  leaveTouchDelay: PropTypes.number,\n\n  /**\n   * Callback fired when the component requests to be closed.\n   *\n   * @param {object} event The event source of the callback.\n   */\n  onClose: PropTypes.func,\n\n  /**\n   * Callback fired when the component requests to be open.\n   *\n   * @param {object} event The event source of the callback.\n   */\n  onOpen: PropTypes.func,\n\n  /**\n   * If `true`, the tooltip is shown.\n   */\n  open: PropTypes.bool,\n\n  /**\n   * Tooltip placement.\n   */\n  placement: PropTypes.oneOf(['bottom-end', 'bottom-start', 'bottom', 'left-end', 'left-start', 'left', 'right-end', 'right-start', 'right', 'top-end', 'top-start', 'top']),\n\n  /**\n   * The component used for the popper.\n   */\n  PopperComponent: PropTypes.elementType,\n\n  /**\n   * Props applied to the [`Popper`](/api/popper/) element.\n   */\n  PopperProps: PropTypes.object,\n\n  /**\n   * Tooltip title. Zero-length titles string are never displayed.\n   */\n  title: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .node.isRequired,\n\n  /**\n   * The component used for the transition.\n   * [Follow this guide](/components/transitions/#transitioncomponent-prop) to learn more about the requirements for this component.\n   */\n  TransitionComponent: PropTypes.elementType,\n\n  /**\n   * Props applied to the [`Transition`](http://reactcommunity.org/react-transition-group/transition#Transition-props) element.\n   */\n  TransitionProps: PropTypes.object\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiTooltip',\n  flip: false\n})(Tooltip);","import * as React from 'react';\n/**\n * Private module reserved for @material-ui/x packages.\n */\n\nexport default function useId(idOverride) {\n  var _React$useState = React.useState(idOverride),\n      defaultId = _React$useState[0],\n      setDefaultId = _React$useState[1];\n\n  var id = idOverride || defaultId;\n  React.useEffect(function () {\n    if (defaultId == null) {\n      // Fallback to this default id when possible.\n      // Use the random value for client-side rendering only.\n      // We can't use it server-side.\n      setDefaultId(\"mui-\".concat(Math.round(Math.random() * 1e5)));\n    }\n  }, [defaultId]);\n  return id;\n}","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport { chainPropTypes } from '@material-ui/utils';\nimport withStyles from '../styles/withStyles';\nimport { alpha } from '../styles/colorManipulator';\nimport ButtonBase from '../ButtonBase';\nimport capitalize from '../utils/capitalize';\nexport var styles = function styles(theme) {\n  return {\n    /* Styles applied to the root element. */\n    root: {\n      textAlign: 'center',\n      flex: '0 0 auto',\n      fontSize: theme.typography.pxToRem(24),\n      padding: 12,\n      borderRadius: '50%',\n      overflow: 'visible',\n      // Explicitly set the default value to solve a bug on IE 11.\n      color: theme.palette.action.active,\n      transition: theme.transitions.create('background-color', {\n        duration: theme.transitions.duration.shortest\n      }),\n      '&:hover': {\n        backgroundColor: alpha(theme.palette.action.active, theme.palette.action.hoverOpacity),\n        // Reset on touch devices, it doesn't add specificity\n        '@media (hover: none)': {\n          backgroundColor: 'transparent'\n        }\n      },\n      '&$disabled': {\n        backgroundColor: 'transparent',\n        color: theme.palette.action.disabled\n      }\n    },\n\n    /* Styles applied to the root element if `edge=\"start\"`. */\n    edgeStart: {\n      marginLeft: -12,\n      '$sizeSmall&': {\n        marginLeft: -3\n      }\n    },\n\n    /* Styles applied to the root element if `edge=\"end\"`. */\n    edgeEnd: {\n      marginRight: -12,\n      '$sizeSmall&': {\n        marginRight: -3\n      }\n    },\n\n    /* Styles applied to the root element if `color=\"inherit\"`. */\n    colorInherit: {\n      color: 'inherit'\n    },\n\n    /* Styles applied to the root element if `color=\"primary\"`. */\n    colorPrimary: {\n      color: theme.palette.primary.main,\n      '&:hover': {\n        backgroundColor: alpha(theme.palette.primary.main, theme.palette.action.hoverOpacity),\n        // Reset on touch devices, it doesn't add specificity\n        '@media (hover: none)': {\n          backgroundColor: 'transparent'\n        }\n      }\n    },\n\n    /* Styles applied to the root element if `color=\"secondary\"`. */\n    colorSecondary: {\n      color: theme.palette.secondary.main,\n      '&:hover': {\n        backgroundColor: alpha(theme.palette.secondary.main, theme.palette.action.hoverOpacity),\n        // Reset on touch devices, it doesn't add specificity\n        '@media (hover: none)': {\n          backgroundColor: 'transparent'\n        }\n      }\n    },\n\n    /* Pseudo-class applied to the root element if `disabled={true}`. */\n    disabled: {},\n\n    /* Styles applied to the root element if `size=\"small\"`. */\n    sizeSmall: {\n      padding: 3,\n      fontSize: theme.typography.pxToRem(18)\n    },\n\n    /* Styles applied to the children container element. */\n    label: {\n      width: '100%',\n      display: 'flex',\n      alignItems: 'inherit',\n      justifyContent: 'inherit'\n    }\n  };\n};\n/**\n * Refer to the [Icons](/components/icons/) section of the documentation\n * regarding the available icon options.\n */\n\nvar IconButton = /*#__PURE__*/React.forwardRef(function IconButton(props, ref) {\n  var _props$edge = props.edge,\n      edge = _props$edge === void 0 ? false : _props$edge,\n      children = props.children,\n      classes = props.classes,\n      className = props.className,\n      _props$color = props.color,\n      color = _props$color === void 0 ? 'default' : _props$color,\n      _props$disabled = props.disabled,\n      disabled = _props$disabled === void 0 ? false : _props$disabled,\n      _props$disableFocusRi = props.disableFocusRipple,\n      disableFocusRipple = _props$disableFocusRi === void 0 ? false : _props$disableFocusRi,\n      _props$size = props.size,\n      size = _props$size === void 0 ? 'medium' : _props$size,\n      other = _objectWithoutProperties(props, [\"edge\", \"children\", \"classes\", \"className\", \"color\", \"disabled\", \"disableFocusRipple\", \"size\"]);\n\n  return /*#__PURE__*/React.createElement(ButtonBase, _extends({\n    className: clsx(classes.root, className, color !== 'default' && classes[\"color\".concat(capitalize(color))], disabled && classes.disabled, size === \"small\" && classes[\"size\".concat(capitalize(size))], {\n      'start': classes.edgeStart,\n      'end': classes.edgeEnd\n    }[edge]),\n    centerRipple: true,\n    focusRipple: !disableFocusRipple,\n    disabled: disabled,\n    ref: ref\n  }, other), /*#__PURE__*/React.createElement(\"span\", {\n    className: classes.label\n  }, children));\n});\nprocess.env.NODE_ENV !== \"production\" ? IconButton.propTypes = {\n  /**\n   * The icon element.\n   */\n  children: chainPropTypes(PropTypes.node, function (props) {\n    var found = React.Children.toArray(props.children).some(function (child) {\n      return /*#__PURE__*/React.isValidElement(child) && child.props.onClick;\n    });\n\n    if (found) {\n      return new Error(['Material-UI: You are providing an onClick event listener ' + 'to a child of a button element.', 'Firefox will never trigger the event.', 'You should move the onClick listener to the parent button element.', 'https://github.com/mui-org/material-ui/issues/13957'].join('\\n'));\n    }\n\n    return null;\n  }),\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object.isRequired,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The color of the component. It supports those theme colors that make sense for this component.\n   */\n  color: PropTypes.oneOf(['default', 'inherit', 'primary', 'secondary']),\n\n  /**\n   * If `true`, the button will be disabled.\n   */\n  disabled: PropTypes.bool,\n\n  /**\n   * If `true`, the  keyboard focus ripple will be disabled.\n   */\n  disableFocusRipple: PropTypes.bool,\n\n  /**\n   * If `true`, the ripple effect will be disabled.\n   */\n  disableRipple: PropTypes.bool,\n\n  /**\n   * If given, uses a negative margin to counteract the padding on one\n   * side (this is often helpful for aligning the left or right\n   * side of the icon with content above or below, without ruining the border\n   * size and shape).\n   */\n  edge: PropTypes.oneOf(['start', 'end', false]),\n\n  /**\n   * The size of the button.\n   * `small` is equivalent to the dense button styling.\n   */\n  size: PropTypes.oneOf(['small', 'medium'])\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiIconButton'\n})(IconButton);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\n\n/* eslint-disable jsx-a11y/aria-role */\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport { chainPropTypes } from '@material-ui/utils';\nimport ButtonBase from '../ButtonBase';\nimport IconButton from '../IconButton';\nimport withStyles from '../styles/withStyles';\nimport AccordionContext from '../Accordion/AccordionContext';\nexport var styles = function styles(theme) {\n  var transition = {\n    duration: theme.transitions.duration.shortest\n  };\n  return {\n    /* Styles applied to the root element. */\n    root: {\n      display: 'flex',\n      minHeight: 8 * 6,\n      transition: theme.transitions.create(['min-height', 'background-color'], transition),\n      padding: theme.spacing(0, 2),\n      '&:hover:not($disabled)': {\n        cursor: 'pointer'\n      },\n      '&$expanded': {\n        minHeight: 64\n      },\n      '&$focused, &$focusVisible': {\n        backgroundColor: theme.palette.action.focus\n      },\n      '&$disabled': {\n        opacity: theme.palette.action.disabledOpacity\n      }\n    },\n\n    /* Pseudo-class applied to the root element, children wrapper element and `IconButton` component if `expanded={true}`. */\n    expanded: {},\n\n    /* Pseudo-class applied to the ButtonBase root element if the button is keyboard focused. */\n    focused: {},\n\n    /* Pseudo-class applied to the ButtonBase root element if the button is keyboard focused. */\n    focusVisible: {},\n\n    /* Pseudo-class applied to the root element if `disabled={true}`. */\n    disabled: {},\n\n    /* Styles applied to the children wrapper element. */\n    content: {\n      display: 'flex',\n      flexGrow: 1,\n      transition: theme.transitions.create(['margin'], transition),\n      margin: '12px 0',\n      '&$expanded': {\n        margin: '20px 0'\n      }\n    },\n\n    /* Styles applied to the `IconButton` component when `expandIcon` is supplied. */\n    expandIcon: {\n      transform: 'rotate(0deg)',\n      transition: theme.transitions.create('transform', transition),\n      '&:hover': {\n        // Disable the hover effect for the IconButton,\n        // because a hover effect should apply to the entire Expand button and\n        // not only to the IconButton.\n        backgroundColor: 'transparent'\n      },\n      '&$expanded': {\n        transform: 'rotate(180deg)'\n      }\n    }\n  };\n};\nvar AccordionSummary = /*#__PURE__*/React.forwardRef(function AccordionSummary(props, ref) {\n  var children = props.children,\n      classes = props.classes,\n      className = props.className,\n      expandIcon = props.expandIcon,\n      focusVisibleClassName = props.focusVisibleClassName,\n      _props$IconButtonProp = props.IconButtonProps,\n      IconButtonProps = _props$IconButtonProp === void 0 ? {} : _props$IconButtonProp,\n      onClick = props.onClick,\n      other = _objectWithoutProperties(props, [\"children\", \"classes\", \"className\", \"expandIcon\", \"focusVisibleClassName\", \"IconButtonProps\", \"onClick\"]);\n\n  var _React$useContext = React.useContext(AccordionContext),\n      _React$useContext$dis = _React$useContext.disabled,\n      disabled = _React$useContext$dis === void 0 ? false : _React$useContext$dis,\n      expanded = _React$useContext.expanded,\n      toggle = _React$useContext.toggle;\n\n  var handleChange = function handleChange(event) {\n    if (toggle) {\n      toggle(event);\n    }\n\n    if (onClick) {\n      onClick(event);\n    }\n  };\n\n  return /*#__PURE__*/React.createElement(ButtonBase, _extends({\n    focusRipple: false,\n    disableRipple: true,\n    disabled: disabled,\n    component: \"div\",\n    \"aria-expanded\": expanded,\n    className: clsx(classes.root, className, disabled && classes.disabled, expanded && classes.expanded),\n    focusVisibleClassName: clsx(classes.focusVisible, classes.focused, focusVisibleClassName),\n    onClick: handleChange,\n    ref: ref\n  }, other), /*#__PURE__*/React.createElement(\"div\", {\n    className: clsx(classes.content, expanded && classes.expanded)\n  }, children), expandIcon && /*#__PURE__*/React.createElement(IconButton, _extends({\n    className: clsx(classes.expandIcon, expanded && classes.expanded),\n    edge: \"end\",\n    component: \"div\",\n    tabIndex: null,\n    role: null,\n    \"aria-hidden\": true\n  }, IconButtonProps), expandIcon));\n});\nprocess.env.NODE_ENV !== \"production\" ? AccordionSummary.propTypes = {\n  // ----------------------------- Warning --------------------------------\n  // | These PropTypes are generated from the TypeScript type definitions |\n  // |     To update them edit the d.ts file and run \"yarn proptypes\"     |\n  // ----------------------------------------------------------------------\n\n  /**\n   * The content of the accordion summary.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: chainPropTypes(PropTypes.object, function (props) {\n    // Guard against when generation of classes is disabled in the stylesheets (`disableGeneration`).\n    // For `disableGeneration` we don't have an accurate warning but `disableGeneration` is an advanced use case anyway.\n    if (props.classes.focused !== undefined && props.classes.focused.indexOf(' ') !== -1) {\n      return new Error(['Material-UI: The `classes.focused` key is deprecated.', 'Use `classes.focusVisible` instead.', 'The name of the pseudo-class was changed for consistency.'].join('\\n'));\n    }\n\n    return null;\n  }),\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The icon to display as the expand indicator.\n   */\n  expandIcon: PropTypes.node,\n\n  /**\n   * This prop can help identify which element has keyboard focus.\n   * The class name will be applied when the element gains the focus through keyboard interaction.\n   * It's a polyfill for the [CSS :focus-visible selector](https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo).\n   * The rationale for using this feature [is explained here](https://github.com/WICG/focus-visible/blob/master/explainer.md).\n   * A [polyfill can be used](https://github.com/WICG/focus-visible) to apply a `focus-visible` class to other components\n   * if needed.\n   */\n  focusVisibleClassName: PropTypes.string,\n\n  /**\n   * Props applied to the `IconButton` element wrapping the expand icon.\n   */\n  IconButtonProps: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  onClick: PropTypes.func\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiAccordionSummary'\n})(AccordionSummary);","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport { chainPropTypes } from '@material-ui/utils';\nimport withStyles from '../styles/withStyles';\nimport ButtonBase from '../ButtonBase';\nimport isMuiElement from '../utils/isMuiElement';\nimport useForkRef from '../utils/useForkRef';\nimport ListContext from '../List/ListContext';\nimport * as ReactDOM from 'react-dom';\nexport var styles = function styles(theme) {\n  return {\n    /* Styles applied to the (normally root) `component` element. May be wrapped by a `container`. */\n    root: {\n      display: 'flex',\n      justifyContent: 'flex-start',\n      alignItems: 'center',\n      position: 'relative',\n      textDecoration: 'none',\n      width: '100%',\n      boxSizing: 'border-box',\n      textAlign: 'left',\n      paddingTop: 8,\n      paddingBottom: 8,\n      '&$focusVisible': {\n        backgroundColor: theme.palette.action.selected\n      },\n      '&$selected, &$selected:hover': {\n        backgroundColor: theme.palette.action.selected\n      },\n      '&$disabled': {\n        opacity: 0.5\n      }\n    },\n\n    /* Styles applied to the `container` element if `children` includes `ListItemSecondaryAction`. */\n    container: {\n      position: 'relative'\n    },\n\n    /* Pseudo-class applied to the `component`'s `focusVisibleClassName` prop if `button={true}`. */\n    focusVisible: {},\n\n    /* Styles applied to the `component` element if dense. */\n    dense: {\n      paddingTop: 4,\n      paddingBottom: 4\n    },\n\n    /* Styles applied to the `component` element if `alignItems=\"flex-start\"`. */\n    alignItemsFlexStart: {\n      alignItems: 'flex-start'\n    },\n\n    /* Pseudo-class applied to the inner `component` element if `disabled={true}`. */\n    disabled: {},\n\n    /* Styles applied to the inner `component` element if `divider={true}`. */\n    divider: {\n      borderBottom: \"1px solid \".concat(theme.palette.divider),\n      backgroundClip: 'padding-box'\n    },\n\n    /* Styles applied to the inner `component` element if `disableGutters={false}`. */\n    gutters: {\n      paddingLeft: 16,\n      paddingRight: 16\n    },\n\n    /* Styles applied to the inner `component` element if `button={true}`. */\n    button: {\n      transition: theme.transitions.create('background-color', {\n        duration: theme.transitions.duration.shortest\n      }),\n      '&:hover': {\n        textDecoration: 'none',\n        backgroundColor: theme.palette.action.hover,\n        // Reset on touch devices, it doesn't add specificity\n        '@media (hover: none)': {\n          backgroundColor: 'transparent'\n        }\n      }\n    },\n\n    /* Styles applied to the `component` element if `children` includes `ListItemSecondaryAction`. */\n    secondaryAction: {\n      // Add some space to avoid collision as `ListItemSecondaryAction`\n      // is absolutely positioned.\n      paddingRight: 48\n    },\n\n    /* Pseudo-class applied to the root element if `selected={true}`. */\n    selected: {}\n  };\n};\nvar useEnhancedEffect = typeof window === 'undefined' ? React.useEffect : React.useLayoutEffect;\n/**\n * Uses an additional container component if `ListItemSecondaryAction` is the last child.\n */\n\nvar ListItem = /*#__PURE__*/React.forwardRef(function ListItem(props, ref) {\n  var _props$alignItems = props.alignItems,\n      alignItems = _props$alignItems === void 0 ? 'center' : _props$alignItems,\n      _props$autoFocus = props.autoFocus,\n      autoFocus = _props$autoFocus === void 0 ? false : _props$autoFocus,\n      _props$button = props.button,\n      button = _props$button === void 0 ? false : _props$button,\n      childrenProp = props.children,\n      classes = props.classes,\n      className = props.className,\n      componentProp = props.component,\n      _props$ContainerCompo = props.ContainerComponent,\n      ContainerComponent = _props$ContainerCompo === void 0 ? 'li' : _props$ContainerCompo,\n      _props$ContainerProps = props.ContainerProps;\n  _props$ContainerProps = _props$ContainerProps === void 0 ? {} : _props$ContainerProps;\n\n  var ContainerClassName = _props$ContainerProps.className,\n      ContainerProps = _objectWithoutProperties(_props$ContainerProps, [\"className\"]),\n      _props$dense = props.dense,\n      dense = _props$dense === void 0 ? false : _props$dense,\n      _props$disabled = props.disabled,\n      disabled = _props$disabled === void 0 ? false : _props$disabled,\n      _props$disableGutters = props.disableGutters,\n      disableGutters = _props$disableGutters === void 0 ? false : _props$disableGutters,\n      _props$divider = props.divider,\n      divider = _props$divider === void 0 ? false : _props$divider,\n      focusVisibleClassName = props.focusVisibleClassName,\n      _props$selected = props.selected,\n      selected = _props$selected === void 0 ? false : _props$selected,\n      other = _objectWithoutProperties(props, [\"alignItems\", \"autoFocus\", \"button\", \"children\", \"classes\", \"className\", \"component\", \"ContainerComponent\", \"ContainerProps\", \"dense\", \"disabled\", \"disableGutters\", \"divider\", \"focusVisibleClassName\", \"selected\"]);\n\n  var context = React.useContext(ListContext);\n  var childContext = {\n    dense: dense || context.dense || false,\n    alignItems: alignItems\n  };\n  var listItemRef = React.useRef(null);\n  useEnhancedEffect(function () {\n    if (autoFocus) {\n      if (listItemRef.current) {\n        listItemRef.current.focus();\n      } else if (process.env.NODE_ENV !== 'production') {\n        console.error('Material-UI: Unable to set focus to a ListItem whose component has not been rendered.');\n      }\n    }\n  }, [autoFocus]);\n  var children = React.Children.toArray(childrenProp);\n  var hasSecondaryAction = children.length && isMuiElement(children[children.length - 1], ['ListItemSecondaryAction']);\n  var handleOwnRef = React.useCallback(function (instance) {\n    // #StrictMode ready\n    listItemRef.current = ReactDOM.findDOMNode(instance);\n  }, []);\n  var handleRef = useForkRef(handleOwnRef, ref);\n\n  var componentProps = _extends({\n    className: clsx(classes.root, className, childContext.dense && classes.dense, !disableGutters && classes.gutters, divider && classes.divider, disabled && classes.disabled, button && classes.button, alignItems !== \"center\" && classes.alignItemsFlexStart, hasSecondaryAction && classes.secondaryAction, selected && classes.selected),\n    disabled: disabled\n  }, other);\n\n  var Component = componentProp || 'li';\n\n  if (button) {\n    componentProps.component = componentProp || 'div';\n    componentProps.focusVisibleClassName = clsx(classes.focusVisible, focusVisibleClassName);\n    Component = ButtonBase;\n  }\n\n  if (hasSecondaryAction) {\n    // Use div by default.\n    Component = !componentProps.component && !componentProp ? 'div' : Component; // Avoid nesting of li > li.\n\n    if (ContainerComponent === 'li') {\n      if (Component === 'li') {\n        Component = 'div';\n      } else if (componentProps.component === 'li') {\n        componentProps.component = 'div';\n      }\n    }\n\n    return /*#__PURE__*/React.createElement(ListContext.Provider, {\n      value: childContext\n    }, /*#__PURE__*/React.createElement(ContainerComponent, _extends({\n      className: clsx(classes.container, ContainerClassName),\n      ref: handleRef\n    }, ContainerProps), /*#__PURE__*/React.createElement(Component, componentProps, children), children.pop()));\n  }\n\n  return /*#__PURE__*/React.createElement(ListContext.Provider, {\n    value: childContext\n  }, /*#__PURE__*/React.createElement(Component, _extends({\n    ref: handleRef\n  }, componentProps), children));\n});\nprocess.env.NODE_ENV !== \"production\" ? ListItem.propTypes = {\n  /**\n   * Defines the `align-items` style property.\n   */\n  alignItems: PropTypes.oneOf(['flex-start', 'center']),\n\n  /**\n   * If `true`, the list item will be focused during the first mount.\n   * Focus will also be triggered if the value changes from false to true.\n   */\n  autoFocus: PropTypes.bool,\n\n  /**\n   * If `true`, the list item will be a button (using `ButtonBase`). Props intended\n   * for `ButtonBase` can then be applied to `ListItem`.\n   */\n  button: PropTypes.bool,\n\n  /**\n   * The content of the component. If a `ListItemSecondaryAction` is used it must\n   * be the last child.\n   */\n  children: chainPropTypes(PropTypes.node, function (props) {\n    var children = React.Children.toArray(props.children); // React.Children.toArray(props.children).findLastIndex(isListItemSecondaryAction)\n\n    var secondaryActionIndex = -1;\n\n    for (var i = children.length - 1; i >= 0; i -= 1) {\n      var child = children[i];\n\n      if (isMuiElement(child, ['ListItemSecondaryAction'])) {\n        secondaryActionIndex = i;\n        break;\n      }\n    } //  is ListItemSecondaryAction the last child of ListItem\n\n\n    if (secondaryActionIndex !== -1 && secondaryActionIndex !== children.length - 1) {\n      return new Error('Material-UI: You used an element after ListItemSecondaryAction. ' + 'For ListItem to detect that it has a secondary action ' + 'you must pass it as the last child to ListItem.');\n    }\n\n    return null;\n  }),\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object.isRequired,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The component used for the root node.\n   * Either a string to use a HTML element or a component.\n   * By default, it's a `li` when `button` is `false` and a `div` when `button` is `true`.\n   */\n  component: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .elementType,\n\n  /**\n   * The container component used when a `ListItemSecondaryAction` is the last child.\n   */\n  ContainerComponent: PropTypes.elementType,\n\n  /**\n   * Props applied to the container component if used.\n   */\n  ContainerProps: PropTypes.object,\n\n  /**\n   * If `true`, compact vertical padding designed for keyboard and mouse input will be used.\n   */\n  dense: PropTypes.bool,\n\n  /**\n   * If `true`, the list item will be disabled.\n   */\n  disabled: PropTypes.bool,\n\n  /**\n   * If `true`, the left and right padding is removed.\n   */\n  disableGutters: PropTypes.bool,\n\n  /**\n   * If `true`, a 1px light border is added to the bottom of the list item.\n   */\n  divider: PropTypes.bool,\n\n  /**\n   * @ignore\n   */\n  focusVisibleClassName: PropTypes.string,\n\n  /**\n   * Use to apply selected styling.\n   */\n  selected: PropTypes.bool\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiListItem'\n})(ListItem);","import _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport _defineProperty from \"@babel/runtime/helpers/esm/defineProperty\";\nimport _extends from \"@babel/runtime/helpers/esm/extends\";\nimport * as React from 'react';\nimport PropTypes from 'prop-types';\nimport clsx from 'clsx';\nimport withStyles from '../styles/withStyles';\nimport ListItem from '../ListItem';\nexport var styles = function styles(theme) {\n  return {\n    /* Styles applied to the root element. */\n    root: _extends({}, theme.typography.body1, _defineProperty({\n      minHeight: 48,\n      paddingTop: 6,\n      paddingBottom: 6,\n      boxSizing: 'border-box',\n      width: 'auto',\n      overflow: 'hidden',\n      whiteSpace: 'nowrap'\n    }, theme.breakpoints.up('sm'), {\n      minHeight: 'auto'\n    })),\n    // TODO v5: remove\n\n    /* Styles applied to the root element if `disableGutters={false}`. */\n    gutters: {},\n\n    /* Styles applied to the root element if `selected={true}`. */\n    selected: {},\n\n    /* Styles applied to the root element if dense. */\n    dense: _extends({}, theme.typography.body2, {\n      minHeight: 'auto'\n    })\n  };\n};\nvar MenuItem = /*#__PURE__*/React.forwardRef(function MenuItem(props, ref) {\n  var classes = props.classes,\n      className = props.className,\n      _props$component = props.component,\n      component = _props$component === void 0 ? 'li' : _props$component,\n      _props$disableGutters = props.disableGutters,\n      disableGutters = _props$disableGutters === void 0 ? false : _props$disableGutters,\n      ListItemClasses = props.ListItemClasses,\n      _props$role = props.role,\n      role = _props$role === void 0 ? 'menuitem' : _props$role,\n      selected = props.selected,\n      tabIndexProp = props.tabIndex,\n      other = _objectWithoutProperties(props, [\"classes\", \"className\", \"component\", \"disableGutters\", \"ListItemClasses\", \"role\", \"selected\", \"tabIndex\"]);\n\n  var tabIndex;\n\n  if (!props.disabled) {\n    tabIndex = tabIndexProp !== undefined ? tabIndexProp : -1;\n  }\n\n  return /*#__PURE__*/React.createElement(ListItem, _extends({\n    button: true,\n    role: role,\n    tabIndex: tabIndex,\n    component: component,\n    selected: selected,\n    disableGutters: disableGutters,\n    classes: _extends({\n      dense: classes.dense\n    }, ListItemClasses),\n    className: clsx(classes.root, className, selected && classes.selected, !disableGutters && classes.gutters),\n    ref: ref\n  }, other));\n});\nprocess.env.NODE_ENV !== \"production\" ? MenuItem.propTypes = {\n  /**\n   * Menu item contents.\n   */\n  children: PropTypes.node,\n\n  /**\n   * Override or extend the styles applied to the component.\n   * See [CSS API](#css) below for more details.\n   */\n  classes: PropTypes.object.isRequired,\n\n  /**\n   * @ignore\n   */\n  className: PropTypes.string,\n\n  /**\n   * The component used for the root node.\n   * Either a string to use a HTML element or a component.\n   */\n  component: PropTypes\n  /* @typescript-to-proptypes-ignore */\n  .elementType,\n\n  /**\n   * If `true`, compact vertical padding designed for keyboard and mouse input will be used.\n   */\n  dense: PropTypes.bool,\n\n  /**\n   * @ignore\n   */\n  disabled: PropTypes.bool,\n\n  /**\n   * If `true`, the left and right padding is removed.\n   */\n  disableGutters: PropTypes.bool,\n\n  /**\n   * `classes` prop applied to the [`ListItem`](/api/list-item/) element.\n   */\n  ListItemClasses: PropTypes.object,\n\n  /**\n   * @ignore\n   */\n  role: PropTypes.string,\n\n  /**\n   * @ignore\n   */\n  selected: PropTypes.bool,\n\n  /**\n   * @ignore\n   */\n  tabIndex: PropTypes.number\n} : void 0;\nexport default withStyles(styles, {\n  name: 'MuiMenuItem'\n})(MenuItem);"],"sourceRoot":""}