}` to the\r\n * native Fetch API.\r\n *\r\n * Visible for testing.\r\n */\r\n CachingClient.prototype.isCachedDataFresh = function (cacheMaxAgeMillis, lastSuccessfulFetchTimestampMillis) {\r\n // Cache can only be fresh if it's populated.\r\n if (!lastSuccessfulFetchTimestampMillis) {\r\n this.logger.debug('Config fetch cache check. Cache unpopulated.');\r\n return false;\r\n }\r\n // Calculates age of cache entry.\r\n var cacheAgeMillis = Date.now() - lastSuccessfulFetchTimestampMillis;\r\n var isCachedDataFresh = cacheAgeMillis <= cacheMaxAgeMillis;\r\n this.logger.debug('Config fetch cache check.' +\r\n (\" Cache age millis: \" + cacheAgeMillis + \".\") +\r\n (\" Cache max age millis (minimumFetchIntervalMillis setting): \" + cacheMaxAgeMillis + \".\") +\r\n (\" Is cache hit: \" + isCachedDataFresh + \".\"));\r\n return isCachedDataFresh;\r\n };\r\n CachingClient.prototype.fetch = function (request) {\r\n return __awaiter(this, void 0, void 0, function () {\r\n var _a, lastSuccessfulFetchTimestampMillis, lastSuccessfulFetchResponse, response, storageOperations;\r\n return __generator(this, function (_b) {\r\n switch (_b.label) {\r\n case 0: return [4 /*yield*/, Promise.all([\r\n this.storage.getLastSuccessfulFetchTimestampMillis(),\r\n this.storage.getLastSuccessfulFetchResponse()\r\n ])];\r\n case 1:\r\n _a = _b.sent(), lastSuccessfulFetchTimestampMillis = _a[0], lastSuccessfulFetchResponse = _a[1];\r\n // Exits early on cache hit.\r\n if (lastSuccessfulFetchResponse &&\r\n this.isCachedDataFresh(request.cacheMaxAgeMillis, lastSuccessfulFetchTimestampMillis)) {\r\n return [2 /*return*/, lastSuccessfulFetchResponse];\r\n }\r\n // Deviates from pure decorator by not honoring a passed ETag since we don't have a public API\r\n // that allows the caller to pass an ETag.\r\n request.eTag =\r\n lastSuccessfulFetchResponse && lastSuccessfulFetchResponse.eTag;\r\n return [4 /*yield*/, this.client.fetch(request)];\r\n case 2:\r\n response = _b.sent();\r\n storageOperations = [\r\n // Uses write-through cache for consistency with synchronous public API.\r\n this.storageCache.setLastSuccessfulFetchTimestampMillis(Date.now())\r\n ];\r\n if (response.status === 200) {\r\n // Caches response only if it has changed, ie non-304 responses.\r\n storageOperations.push(this.storage.setLastSuccessfulFetchResponse(response));\r\n }\r\n return [4 /*yield*/, Promise.all(storageOperations)];\r\n case 3:\r\n _b.sent();\r\n return [2 /*return*/, response];\r\n }\r\n });\r\n });\r\n };\r\n return CachingClient;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n * http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar _a;\r\nvar ERROR_DESCRIPTION_MAP = (_a = {},\r\n _a[\"registration-window\" /* REGISTRATION_WINDOW */] = 'Undefined window object. This SDK only supports usage in a browser environment.',\r\n _a[\"registration-project-id\" /* REGISTRATION_PROJECT_ID */] = 'Undefined project identifier. Check Firebase app initialization.',\r\n _a[\"registration-api-key\" /* REGISTRATION_API_KEY */] = 'Undefined API key. Check Firebase app initialization.',\r\n _a[\"registration-app-id\" /* REGISTRATION_APP_ID */] = 'Undefined app identifier. Check Firebase app initialization.',\r\n _a[\"storage-open\" /* STORAGE_OPEN */] = 'Error thrown when opening storage. Original error: {$originalErrorMessage}.',\r\n _a[\"storage-get\" /* STORAGE_GET */] = 'Error thrown when reading from storage. Original error: {$originalErrorMessage}.',\r\n _a[\"storage-set\" /* STORAGE_SET */] = 'Error thrown when writing to storage. Original error: {$originalErrorMessage}.',\r\n _a[\"storage-delete\" /* STORAGE_DELETE */] = 'Error thrown when deleting from storage. Original error: {$originalErrorMessage}.',\r\n _a[\"fetch-client-network\" /* FETCH_NETWORK */] = 'Fetch client failed to connect to a network. Check Internet connection.' +\r\n ' Original error: {$originalErrorMessage}.',\r\n _a[\"fetch-timeout\" /* FETCH_TIMEOUT */] = 'The config fetch request timed out. ' +\r\n ' Configure timeout using \"fetchTimeoutMillis\" SDK setting.',\r\n _a[\"fetch-throttle\" /* FETCH_THROTTLE */] = 'The config fetch request timed out while in an exponential backoff state.' +\r\n ' Configure timeout using \"fetchTimeoutMillis\" SDK setting.' +\r\n ' Unix timestamp in milliseconds when fetch request throttling ends: {$throttleEndTimeMillis}.',\r\n _a[\"fetch-client-parse\" /* FETCH_PARSE */] = 'Fetch client could not parse response.' +\r\n ' Original error: {$originalErrorMessage}.',\r\n _a[\"fetch-status\" /* FETCH_STATUS */] = 'Fetch server returned an HTTP error status. HTTP status: {$httpStatus}.',\r\n _a);\r\nvar ERROR_FACTORY = new ErrorFactory('remoteconfig' /* service */, 'Remote Config' /* service name */, ERROR_DESCRIPTION_MAP);\r\n// Note how this is like typeof/instanceof, but for ErrorCode.\r\nfunction hasErrorCode(e, errorCode) {\r\n return e instanceof FirebaseError && e.code.indexOf(errorCode) !== -1;\r\n}\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n * http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Attempts to get the most accurate browser language setting.\r\n *\r\n *
Adapted from getUserLanguage in packages/auth/src/utils.js for TypeScript.\r\n *\r\n *
Defers default language specification to server logic for consistency.\r\n *\r\n * @param navigatorLanguage Enables tests to override read-only {@link NavigatorLanguage}.\r\n */\r\nfunction getUserLanguage(navigatorLanguage) {\r\n if (navigatorLanguage === void 0) { navigatorLanguage = navigator; }\r\n return (\r\n // Most reliable, but only supported in Chrome/Firefox.\r\n (navigatorLanguage.languages && navigatorLanguage.languages[0]) ||\r\n // Supported in most browsers, but returns the language of the browser\r\n // UI, not the language set in browser settings.\r\n navigatorLanguage.language\r\n // Polyfill otherwise.\r\n );\r\n}\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n * http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Implements the Client abstraction for the Remote Config REST API.\r\n */\r\nvar RestClient = /** @class */ (function () {\r\n function RestClient(firebaseInstallations, sdkVersion, namespace, projectId, apiKey, appId) {\r\n this.firebaseInstallations = firebaseInstallations;\r\n this.sdkVersion = sdkVersion;\r\n this.namespace = namespace;\r\n this.projectId = projectId;\r\n this.apiKey = apiKey;\r\n this.appId = appId;\r\n }\r\n /**\r\n * Fetches from the Remote Config REST API.\r\n *\r\n * @throws a {@link ErrorCode.FETCH_NETWORK} error if {@link GlobalFetch#fetch} can't\r\n * connect to the network.\r\n * @throws a {@link ErrorCode.FETCH_PARSE} error if {@link Response#json} can't parse the\r\n * fetch response.\r\n * @throws a {@link ErrorCode.FETCH_STATUS} error if the service returns an HTTP error status.\r\n */\r\n RestClient.prototype.fetch = function (request) {\r\n return __awaiter(this, void 0, void 0, function () {\r\n var _a, installationId, installationToken, urlBase, url, headers, requestBody, options, fetchPromise, timeoutPromise, response, originalError_1, errorCode, status, responseEtag, config, state, responseBody, originalError_2;\r\n return __generator(this, function (_b) {\r\n switch (_b.label) {\r\n case 0: return [4 /*yield*/, Promise.all([\r\n this.firebaseInstallations.getId(),\r\n this.firebaseInstallations.getToken()\r\n ])];\r\n case 1:\r\n _a = _b.sent(), installationId = _a[0], installationToken = _a[1];\r\n urlBase = window.FIREBASE_REMOTE_CONFIG_URL_BASE ||\r\n 'https://firebaseremoteconfig.googleapis.com';\r\n url = urlBase + \"/v1/projects/\" + this.projectId + \"/namespaces/\" + this.namespace + \":fetch?key=\" + this.apiKey;\r\n headers = {\r\n 'Content-Type': 'application/json',\r\n 'Content-Encoding': 'gzip',\r\n // Deviates from pure decorator by not passing max-age header since we don't currently have\r\n // service behavior using that header.\r\n 'If-None-Match': request.eTag || '*'\r\n };\r\n requestBody = {\r\n /* eslint-disable camelcase */\r\n sdk_version: this.sdkVersion,\r\n app_instance_id: installationId,\r\n app_instance_id_token: installationToken,\r\n app_id: this.appId,\r\n language_code: getUserLanguage()\r\n /* eslint-enable camelcase */\r\n };\r\n options = {\r\n method: 'POST',\r\n headers: headers,\r\n body: JSON.stringify(requestBody)\r\n };\r\n fetchPromise = fetch(url, options);\r\n timeoutPromise = new Promise(function (_resolve, reject) {\r\n // Maps async event listener to Promise API.\r\n request.signal.addEventListener(function () {\r\n // Emulates https://heycam.github.io/webidl/#aborterror\r\n var error = new Error('The operation was aborted.');\r\n error.name = 'AbortError';\r\n reject(error);\r\n });\r\n });\r\n _b.label = 2;\r\n case 2:\r\n _b.trys.push([2, 5, , 6]);\r\n return [4 /*yield*/, Promise.race([fetchPromise, timeoutPromise])];\r\n case 3:\r\n _b.sent();\r\n return [4 /*yield*/, fetchPromise];\r\n case 4:\r\n response = _b.sent();\r\n return [3 /*break*/, 6];\r\n case 5:\r\n originalError_1 = _b.sent();\r\n errorCode = \"fetch-client-network\" /* FETCH_NETWORK */;\r\n if (originalError_1.name === 'AbortError') {\r\n errorCode = \"fetch-timeout\" /* FETCH_TIMEOUT */;\r\n }\r\n throw ERROR_FACTORY.create(errorCode, {\r\n originalErrorMessage: originalError_1.message\r\n });\r\n case 6:\r\n status = response.status;\r\n responseEtag = response.headers.get('ETag') || undefined;\r\n if (!(response.status === 200)) return [3 /*break*/, 11];\r\n responseBody = void 0;\r\n _b.label = 7;\r\n case 7:\r\n _b.trys.push([7, 9, , 10]);\r\n return [4 /*yield*/, response.json()];\r\n case 8:\r\n responseBody = _b.sent();\r\n return [3 /*break*/, 10];\r\n case 9:\r\n originalError_2 = _b.sent();\r\n throw ERROR_FACTORY.create(\"fetch-client-parse\" /* FETCH_PARSE */, {\r\n originalErrorMessage: originalError_2.message\r\n });\r\n case 10:\r\n config = responseBody['entries'];\r\n state = responseBody['state'];\r\n _b.label = 11;\r\n case 11:\r\n // Normalizes based on legacy state.\r\n if (state === 'INSTANCE_STATE_UNSPECIFIED') {\r\n status = 500;\r\n }\r\n else if (state === 'NO_CHANGE') {\r\n status = 304;\r\n }\r\n else if (state === 'NO_TEMPLATE' || state === 'EMPTY_CONFIG') {\r\n // These cases can be fixed remotely, so normalize to safe value.\r\n config = {};\r\n }\r\n // Normalize to exception-based control flow for non-success cases.\r\n // Encapsulates HTTP specifics in this class as much as possible. Status is still the best for\r\n // differentiating success states (200 from 304; the state body param is undefined in a\r\n // standard 304).\r\n if (status !== 304 && status !== 200) {\r\n throw ERROR_FACTORY.create(\"fetch-status\" /* FETCH_STATUS */, {\r\n httpStatus: status\r\n });\r\n }\r\n return [2 /*return*/, { status: status, eTag: responseEtag, config: config }];\r\n }\r\n });\r\n });\r\n };\r\n return RestClient;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n * http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Shims a minimal AbortSignal.\r\n *\r\n *
AbortController's AbortSignal conveniently decouples fetch timeout logic from other aspects\r\n * of networking, such as retries. Firebase doesn't use AbortController enough to justify a\r\n * polyfill recommendation, like we do with the Fetch API, but this minimal shim can easily be\r\n * swapped out if/when we do.\r\n */\r\nvar RemoteConfigAbortSignal = /** @class */ (function () {\r\n function RemoteConfigAbortSignal() {\r\n this.listeners = [];\r\n }\r\n RemoteConfigAbortSignal.prototype.addEventListener = function (listener) {\r\n this.listeners.push(listener);\r\n };\r\n RemoteConfigAbortSignal.prototype.abort = function () {\r\n this.listeners.forEach(function (listener) { return listener(); });\r\n };\r\n return RemoteConfigAbortSignal;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n * http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar DEFAULT_VALUE_FOR_BOOLEAN = false;\r\nvar DEFAULT_VALUE_FOR_STRING = '';\r\nvar DEFAULT_VALUE_FOR_NUMBER = 0;\r\nvar BOOLEAN_TRUTHY_VALUES = ['1', 'true', 't', 'yes', 'y', 'on'];\r\nvar Value = /** @class */ (function () {\r\n function Value(_source, _value) {\r\n if (_value === void 0) { _value = DEFAULT_VALUE_FOR_STRING; }\r\n this._source = _source;\r\n this._value = _value;\r\n }\r\n Value.prototype.asString = function () {\r\n return this._value;\r\n };\r\n Value.prototype.asBoolean = function () {\r\n if (this._source === 'static') {\r\n return DEFAULT_VALUE_FOR_BOOLEAN;\r\n }\r\n return BOOLEAN_TRUTHY_VALUES.indexOf(this._value.toLowerCase()) >= 0;\r\n };\r\n Value.prototype.asNumber = function () {\r\n if (this._source === 'static') {\r\n return DEFAULT_VALUE_FOR_NUMBER;\r\n }\r\n var num = Number(this._value);\r\n if (isNaN(num)) {\r\n num = DEFAULT_VALUE_FOR_NUMBER;\r\n }\r\n return num;\r\n };\r\n Value.prototype.getSource = function () {\r\n return this._source;\r\n };\r\n return Value;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n * http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nvar DEFAULT_FETCH_TIMEOUT_MILLIS = 60 * 1000; // One minute\r\nvar DEFAULT_CACHE_MAX_AGE_MILLIS = 12 * 60 * 60 * 1000; // Twelve hours.\r\n/**\r\n * Encapsulates business logic mapping network and storage dependencies to the public SDK API.\r\n *\r\n * See {@link https://github.com/FirebasePrivate/firebase-js-sdk/blob/master/packages/firebase/index.d.ts|interface documentation} for method descriptions.\r\n */\r\nvar RemoteConfig = /** @class */ (function () {\r\n function RemoteConfig(\r\n // Required by FirebaseServiceFactory interface.\r\n app, \r\n // JS doesn't support private yet\r\n // (https://github.com/tc39/proposal-class-fields#private-fields), so we hint using an\r\n // underscore prefix.\r\n _client, _storageCache, _storage, _logger) {\r\n this.app = app;\r\n this._client = _client;\r\n this._storageCache = _storageCache;\r\n this._storage = _storage;\r\n this._logger = _logger;\r\n // Tracks completion of initialization promise.\r\n this._isInitializationComplete = false;\r\n this.settings = {\r\n fetchTimeoutMillis: DEFAULT_FETCH_TIMEOUT_MILLIS,\r\n minimumFetchIntervalMillis: DEFAULT_CACHE_MAX_AGE_MILLIS\r\n };\r\n this.defaultConfig = {};\r\n }\r\n // Based on packages/firestore/src/util/log.ts but not static because we need per-instance levels\r\n // to differentiate 2p and 3p use-cases.\r\n RemoteConfig.prototype.setLogLevel = function (logLevel) {\r\n switch (logLevel) {\r\n case 'debug':\r\n this._logger.logLevel = LogLevel.DEBUG;\r\n break;\r\n case 'silent':\r\n this._logger.logLevel = LogLevel.SILENT;\r\n break;\r\n default:\r\n this._logger.logLevel = LogLevel.ERROR;\r\n }\r\n };\r\n Object.defineProperty(RemoteConfig.prototype, \"fetchTimeMillis\", {\r\n get: function () {\r\n return this._storageCache.getLastSuccessfulFetchTimestampMillis() || -1;\r\n },\r\n enumerable: false,\r\n configurable: true\r\n });\r\n Object.defineProperty(RemoteConfig.prototype, \"lastFetchStatus\", {\r\n get: function () {\r\n return this._storageCache.getLastFetchStatus() || 'no-fetch-yet';\r\n },\r\n enumerable: false,\r\n configurable: true\r\n });\r\n RemoteConfig.prototype.activate = function () {\r\n return __awaiter(this, void 0, void 0, function () {\r\n var _a, lastSuccessfulFetchResponse, activeConfigEtag;\r\n return __generator(this, function (_b) {\r\n switch (_b.label) {\r\n case 0: return [4 /*yield*/, Promise.all([\r\n this._storage.getLastSuccessfulFetchResponse(),\r\n this._storage.getActiveConfigEtag()\r\n ])];\r\n case 1:\r\n _a = _b.sent(), lastSuccessfulFetchResponse = _a[0], activeConfigEtag = _a[1];\r\n if (!lastSuccessfulFetchResponse ||\r\n !lastSuccessfulFetchResponse.config ||\r\n !lastSuccessfulFetchResponse.eTag ||\r\n lastSuccessfulFetchResponse.eTag === activeConfigEtag) {\r\n // Either there is no successful fetched config, or is the same as current active\r\n // config.\r\n return [2 /*return*/, false];\r\n }\r\n return [4 /*yield*/, Promise.all([\r\n this._storageCache.setActiveConfig(lastSuccessfulFetchResponse.config),\r\n this._storage.setActiveConfigEtag(lastSuccessfulFetchResponse.eTag)\r\n ])];\r\n case 2:\r\n _b.sent();\r\n return [2 /*return*/, true];\r\n }\r\n });\r\n });\r\n };\r\n RemoteConfig.prototype.ensureInitialized = function () {\r\n var _this = this;\r\n if (!this._initializePromise) {\r\n this._initializePromise = this._storageCache\r\n .loadFromStorage()\r\n .then(function () {\r\n _this._isInitializationComplete = true;\r\n });\r\n }\r\n return this._initializePromise;\r\n };\r\n /**\r\n * @throws a {@link ErrorCode.FETCH_CLIENT_TIMEOUT} if the request takes longer than\r\n * {@link Settings.fetchTimeoutInSeconds} or\r\n * {@link DEFAULT_FETCH_TIMEOUT_SECONDS}.\r\n */\r\n RemoteConfig.prototype.fetch = function () {\r\n return __awaiter(this, void 0, void 0, function () {\r\n var abortSignal, e_1, lastFetchStatus;\r\n var _this = this;\r\n return __generator(this, function (_a) {\r\n switch (_a.label) {\r\n case 0:\r\n abortSignal = new RemoteConfigAbortSignal();\r\n setTimeout(function () { return __awaiter(_this, void 0, void 0, function () {\r\n return __generator(this, function (_a) {\r\n // Note a very low delay, eg < 10ms, can elapse before listeners are initialized.\r\n abortSignal.abort();\r\n return [2 /*return*/];\r\n });\r\n }); }, this.settings.fetchTimeoutMillis);\r\n _a.label = 1;\r\n case 1:\r\n _a.trys.push([1, 4, , 6]);\r\n return [4 /*yield*/, this._client.fetch({\r\n cacheMaxAgeMillis: this.settings.minimumFetchIntervalMillis,\r\n signal: abortSignal\r\n })];\r\n case 2:\r\n _a.sent();\r\n return [4 /*yield*/, this._storageCache.setLastFetchStatus('success')];\r\n case 3:\r\n _a.sent();\r\n return [3 /*break*/, 6];\r\n case 4:\r\n e_1 = _a.sent();\r\n lastFetchStatus = hasErrorCode(e_1, \"fetch-throttle\" /* FETCH_THROTTLE */)\r\n ? 'throttle'\r\n : 'failure';\r\n return [4 /*yield*/, this._storageCache.setLastFetchStatus(lastFetchStatus)];\r\n case 5:\r\n _a.sent();\r\n throw e_1;\r\n case 6: return [2 /*return*/];\r\n }\r\n });\r\n });\r\n };\r\n RemoteConfig.prototype.fetchAndActivate = function () {\r\n return __awaiter(this, void 0, void 0, function () {\r\n return __generator(this, function (_a) {\r\n switch (_a.label) {\r\n case 0: return [4 /*yield*/, this.fetch()];\r\n case 1:\r\n _a.sent();\r\n return [2 /*return*/, this.activate()];\r\n }\r\n });\r\n });\r\n };\r\n RemoteConfig.prototype.getAll = function () {\r\n var _this = this;\r\n return getAllKeys(this._storageCache.getActiveConfig(), this.defaultConfig).reduce(function (allConfigs, key) {\r\n allConfigs[key] = _this.getValue(key);\r\n return allConfigs;\r\n }, {});\r\n };\r\n RemoteConfig.prototype.getBoolean = function (key) {\r\n return this.getValue(key).asBoolean();\r\n };\r\n RemoteConfig.prototype.getNumber = function (key) {\r\n return this.getValue(key).asNumber();\r\n };\r\n RemoteConfig.prototype.getString = function (key) {\r\n return this.getValue(key).asString();\r\n };\r\n RemoteConfig.prototype.getValue = function (key) {\r\n if (!this._isInitializationComplete) {\r\n this._logger.debug(\"A value was requested for key \\\"\" + key + \"\\\" before SDK initialization completed.\" +\r\n ' Await on ensureInitialized if the intent was to get a previously activated value.');\r\n }\r\n var activeConfig = this._storageCache.getActiveConfig();\r\n if (activeConfig && activeConfig[key] !== undefined) {\r\n return new Value('remote', activeConfig[key]);\r\n }\r\n else if (this.defaultConfig && this.defaultConfig[key] !== undefined) {\r\n return new Value('default', String(this.defaultConfig[key]));\r\n }\r\n this._logger.debug(\"Returning static value for key \\\"\" + key + \"\\\".\" +\r\n ' Define a default or remote value if this is unintentional.');\r\n return new Value('static');\r\n };\r\n return RemoteConfig;\r\n}());\r\n/**\r\n * Dedupes and returns an array of all the keys of the received objects.\r\n */\r\nfunction getAllKeys(obj1, obj2) {\r\n if (obj1 === void 0) { obj1 = {}; }\r\n if (obj2 === void 0) { obj2 = {}; }\r\n return Object.keys(__assign(__assign({}, obj1), obj2));\r\n}\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n * http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Converts an error event associated with a {@link IDBRequest} to a {@link FirebaseError}.\r\n */\r\nfunction toFirebaseError(event, errorCode) {\r\n var originalError = event.target.error || undefined;\r\n return ERROR_FACTORY.create(errorCode, {\r\n originalErrorMessage: originalError && originalError.message\r\n });\r\n}\r\n/**\r\n * A general-purpose store keyed by app + namespace + {@link\r\n * ProjectNamespaceKeyFieldValue}.\r\n *\r\n *
The Remote Config SDK can be used with multiple app installations, and each app can interact\r\n * with multiple namespaces, so this store uses app (ID + name) and namespace as common parent keys\r\n * for a set of key-value pairs. See {@link Storage#createCompositeKey}.\r\n *\r\n *
Visible for testing.\r\n */\r\nvar APP_NAMESPACE_STORE = 'app_namespace_store';\r\nvar DB_NAME = 'firebase_remote_config';\r\nvar DB_VERSION = 1;\r\n// Visible for testing.\r\nfunction openDatabase() {\r\n return new Promise(function (resolve, reject) {\r\n var request = indexedDB.open(DB_NAME, DB_VERSION);\r\n request.onerror = function (event) {\r\n reject(toFirebaseError(event, \"storage-open\" /* STORAGE_OPEN */));\r\n };\r\n request.onsuccess = function (event) {\r\n resolve(event.target.result);\r\n };\r\n request.onupgradeneeded = function (event) {\r\n var db = event.target.result;\r\n // We don't use 'break' in this switch statement, the fall-through\r\n // behavior is what we want, because if there are multiple versions between\r\n // the old version and the current version, we want ALL the migrations\r\n // that correspond to those versions to run, not only the last one.\r\n // eslint-disable-next-line default-case\r\n switch (event.oldVersion) {\r\n case 0:\r\n db.createObjectStore(APP_NAMESPACE_STORE, {\r\n keyPath: 'compositeKey'\r\n });\r\n }\r\n };\r\n });\r\n}\r\n/**\r\n * Abstracts data persistence.\r\n */\r\nvar Storage = /** @class */ (function () {\r\n /**\r\n * @param appId enables storage segmentation by app (ID + name).\r\n * @param appName enables storage segmentation by app (ID + name).\r\n * @param namespace enables storage segmentation by namespace.\r\n */\r\n function Storage(appId, appName, namespace, openDbPromise) {\r\n if (openDbPromise === void 0) { openDbPromise = openDatabase(); }\r\n this.appId = appId;\r\n this.appName = appName;\r\n this.namespace = namespace;\r\n this.openDbPromise = openDbPromise;\r\n }\r\n Storage.prototype.getLastFetchStatus = function () {\r\n return this.get('last_fetch_status');\r\n };\r\n Storage.prototype.setLastFetchStatus = function (status) {\r\n return this.set('last_fetch_status', status);\r\n };\r\n // This is comparable to a cache entry timestamp. If we need to expire other data, we could\r\n // consider adding timestamp to all storage records and an optional max age arg to getters.\r\n Storage.prototype.getLastSuccessfulFetchTimestampMillis = function () {\r\n return this.get('last_successful_fetch_timestamp_millis');\r\n };\r\n Storage.prototype.setLastSuccessfulFetchTimestampMillis = function (timestamp) {\r\n return this.set('last_successful_fetch_timestamp_millis', timestamp);\r\n };\r\n Storage.prototype.getLastSuccessfulFetchResponse = function () {\r\n return this.get('last_successful_fetch_response');\r\n };\r\n Storage.prototype.setLastSuccessfulFetchResponse = function (response) {\r\n return this.set('last_successful_fetch_response', response);\r\n };\r\n Storage.prototype.getActiveConfig = function () {\r\n return this.get('active_config');\r\n };\r\n Storage.prototype.setActiveConfig = function (config) {\r\n return this.set('active_config', config);\r\n };\r\n Storage.prototype.getActiveConfigEtag = function () {\r\n return this.get('active_config_etag');\r\n };\r\n Storage.prototype.setActiveConfigEtag = function (etag) {\r\n return this.set('active_config_etag', etag);\r\n };\r\n Storage.prototype.getThrottleMetadata = function () {\r\n return this.get('throttle_metadata');\r\n };\r\n Storage.prototype.setThrottleMetadata = function (metadata) {\r\n return this.set('throttle_metadata', metadata);\r\n };\r\n Storage.prototype.deleteThrottleMetadata = function () {\r\n return this.delete('throttle_metadata');\r\n };\r\n Storage.prototype.get = function (key) {\r\n return __awaiter(this, void 0, void 0, function () {\r\n var db;\r\n var _this = this;\r\n return __generator(this, function (_a) {\r\n switch (_a.label) {\r\n case 0: return [4 /*yield*/, this.openDbPromise];\r\n case 1:\r\n db = _a.sent();\r\n return [2 /*return*/, new Promise(function (resolve, reject) {\r\n var transaction = db.transaction([APP_NAMESPACE_STORE], 'readonly');\r\n var objectStore = transaction.objectStore(APP_NAMESPACE_STORE);\r\n var compositeKey = _this.createCompositeKey(key);\r\n try {\r\n var request = objectStore.get(compositeKey);\r\n request.onerror = function (event) {\r\n reject(toFirebaseError(event, \"storage-get\" /* STORAGE_GET */));\r\n };\r\n request.onsuccess = function (event) {\r\n var result = event.target.result;\r\n if (result) {\r\n resolve(result.value);\r\n }\r\n else {\r\n resolve(undefined);\r\n }\r\n };\r\n }\r\n catch (e) {\r\n reject(ERROR_FACTORY.create(\"storage-get\" /* STORAGE_GET */, {\r\n originalErrorMessage: e && e.message\r\n }));\r\n }\r\n })];\r\n }\r\n });\r\n });\r\n };\r\n Storage.prototype.set = function (key, value) {\r\n return __awaiter(this, void 0, void 0, function () {\r\n var db;\r\n var _this = this;\r\n return __generator(this, function (_a) {\r\n switch (_a.label) {\r\n case 0: return [4 /*yield*/, this.openDbPromise];\r\n case 1:\r\n db = _a.sent();\r\n return [2 /*return*/, new Promise(function (resolve, reject) {\r\n var transaction = db.transaction([APP_NAMESPACE_STORE], 'readwrite');\r\n var objectStore = transaction.objectStore(APP_NAMESPACE_STORE);\r\n var compositeKey = _this.createCompositeKey(key);\r\n try {\r\n var request = objectStore.put({\r\n compositeKey: compositeKey,\r\n value: value\r\n });\r\n request.onerror = function (event) {\r\n reject(toFirebaseError(event, \"storage-set\" /* STORAGE_SET */));\r\n };\r\n request.onsuccess = function () {\r\n resolve();\r\n };\r\n }\r\n catch (e) {\r\n reject(ERROR_FACTORY.create(\"storage-set\" /* STORAGE_SET */, {\r\n originalErrorMessage: e && e.message\r\n }));\r\n }\r\n })];\r\n }\r\n });\r\n });\r\n };\r\n Storage.prototype.delete = function (key) {\r\n return __awaiter(this, void 0, void 0, function () {\r\n var db;\r\n var _this = this;\r\n return __generator(this, function (_a) {\r\n switch (_a.label) {\r\n case 0: return [4 /*yield*/, this.openDbPromise];\r\n case 1:\r\n db = _a.sent();\r\n return [2 /*return*/, new Promise(function (resolve, reject) {\r\n var transaction = db.transaction([APP_NAMESPACE_STORE], 'readwrite');\r\n var objectStore = transaction.objectStore(APP_NAMESPACE_STORE);\r\n var compositeKey = _this.createCompositeKey(key);\r\n try {\r\n var request = objectStore.delete(compositeKey);\r\n request.onerror = function (event) {\r\n reject(toFirebaseError(event, \"storage-delete\" /* STORAGE_DELETE */));\r\n };\r\n request.onsuccess = function () {\r\n resolve();\r\n };\r\n }\r\n catch (e) {\r\n reject(ERROR_FACTORY.create(\"storage-delete\" /* STORAGE_DELETE */, {\r\n originalErrorMessage: e && e.message\r\n }));\r\n }\r\n })];\r\n }\r\n });\r\n });\r\n };\r\n // Facilitates composite key functionality (which is unsupported in IE).\r\n Storage.prototype.createCompositeKey = function (key) {\r\n return [this.appId, this.appName, this.namespace, key].join();\r\n };\r\n return Storage;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n * http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * A memory cache layer over storage to support the SDK's synchronous read requirements.\r\n */\r\nvar StorageCache = /** @class */ (function () {\r\n function StorageCache(storage) {\r\n this.storage = storage;\r\n }\r\n /**\r\n * Memory-only getters\r\n */\r\n StorageCache.prototype.getLastFetchStatus = function () {\r\n return this.lastFetchStatus;\r\n };\r\n StorageCache.prototype.getLastSuccessfulFetchTimestampMillis = function () {\r\n return this.lastSuccessfulFetchTimestampMillis;\r\n };\r\n StorageCache.prototype.getActiveConfig = function () {\r\n return this.activeConfig;\r\n };\r\n /**\r\n * Read-ahead getter\r\n */\r\n StorageCache.prototype.loadFromStorage = function () {\r\n return __awaiter(this, void 0, void 0, function () {\r\n var lastFetchStatusPromise, lastSuccessfulFetchTimestampMillisPromise, activeConfigPromise, lastFetchStatus, lastSuccessfulFetchTimestampMillis, activeConfig;\r\n return __generator(this, function (_a) {\r\n switch (_a.label) {\r\n case 0:\r\n lastFetchStatusPromise = this.storage.getLastFetchStatus();\r\n lastSuccessfulFetchTimestampMillisPromise = this.storage.getLastSuccessfulFetchTimestampMillis();\r\n activeConfigPromise = this.storage.getActiveConfig();\r\n return [4 /*yield*/, lastFetchStatusPromise];\r\n case 1:\r\n lastFetchStatus = _a.sent();\r\n if (lastFetchStatus) {\r\n this.lastFetchStatus = lastFetchStatus;\r\n }\r\n return [4 /*yield*/, lastSuccessfulFetchTimestampMillisPromise];\r\n case 2:\r\n lastSuccessfulFetchTimestampMillis = _a.sent();\r\n if (lastSuccessfulFetchTimestampMillis) {\r\n this.lastSuccessfulFetchTimestampMillis = lastSuccessfulFetchTimestampMillis;\r\n }\r\n return [4 /*yield*/, activeConfigPromise];\r\n case 3:\r\n activeConfig = _a.sent();\r\n if (activeConfig) {\r\n this.activeConfig = activeConfig;\r\n }\r\n return [2 /*return*/];\r\n }\r\n });\r\n });\r\n };\r\n /**\r\n * Write-through setters\r\n */\r\n StorageCache.prototype.setLastFetchStatus = function (status) {\r\n this.lastFetchStatus = status;\r\n return this.storage.setLastFetchStatus(status);\r\n };\r\n StorageCache.prototype.setLastSuccessfulFetchTimestampMillis = function (timestampMillis) {\r\n this.lastSuccessfulFetchTimestampMillis = timestampMillis;\r\n return this.storage.setLastSuccessfulFetchTimestampMillis(timestampMillis);\r\n };\r\n StorageCache.prototype.setActiveConfig = function (activeConfig) {\r\n this.activeConfig = activeConfig;\r\n return this.storage.setActiveConfig(activeConfig);\r\n };\r\n return StorageCache;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n * http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Supports waiting on a backoff by:\r\n *\r\n *
\r\n * - Promisifying setTimeout, so we can set a timeout in our Promise chain
\r\n * - Listening on a signal bus for abort events, just like the Fetch API
\r\n * - Failing in the same way the Fetch API fails, so timing out a live request and a throttled\r\n * request appear the same.
\r\n *
\r\n *\r\n * Visible for testing.\r\n */\r\nfunction setAbortableTimeout(signal, throttleEndTimeMillis) {\r\n return new Promise(function (resolve, reject) {\r\n // Derives backoff from given end time, normalizing negative numbers to zero.\r\n var backoffMillis = Math.max(throttleEndTimeMillis - Date.now(), 0);\r\n var timeout = setTimeout(resolve, backoffMillis);\r\n // Adds listener, rather than sets onabort, because signal is a shared object.\r\n signal.addEventListener(function () {\r\n clearTimeout(timeout);\r\n // If the request completes before this timeout, the rejection has no effect.\r\n reject(ERROR_FACTORY.create(\"fetch-throttle\" /* FETCH_THROTTLE */, {\r\n throttleEndTimeMillis: throttleEndTimeMillis\r\n }));\r\n });\r\n });\r\n}\r\n/**\r\n * Returns true if the {@link Error} indicates a fetch request may succeed later.\r\n */\r\nfunction isRetriableError(e) {\r\n if (!(e instanceof FirebaseError) || !e.customData) {\r\n return false;\r\n }\r\n // Uses string index defined by ErrorData, which FirebaseError implements.\r\n var httpStatus = Number(e.customData['httpStatus']);\r\n return (httpStatus === 429 ||\r\n httpStatus === 500 ||\r\n httpStatus === 503 ||\r\n httpStatus === 504);\r\n}\r\n/**\r\n * Decorates a Client with retry logic.\r\n *\r\n *
Comparable to CachingClient, but uses backoff logic instead of cache max age and doesn't cache\r\n * responses (because the SDK has no use for error responses).\r\n */\r\nvar RetryingClient = /** @class */ (function () {\r\n function RetryingClient(client, storage) {\r\n this.client = client;\r\n this.storage = storage;\r\n }\r\n RetryingClient.prototype.fetch = function (request) {\r\n return __awaiter(this, void 0, void 0, function () {\r\n var throttleMetadata;\r\n return __generator(this, function (_a) {\r\n switch (_a.label) {\r\n case 0: return [4 /*yield*/, this.storage.getThrottleMetadata()];\r\n case 1:\r\n throttleMetadata = (_a.sent()) || {\r\n backoffCount: 0,\r\n throttleEndTimeMillis: Date.now()\r\n };\r\n return [2 /*return*/, this.attemptFetch(request, throttleMetadata)];\r\n }\r\n });\r\n });\r\n };\r\n /**\r\n * A recursive helper for attempting a fetch request repeatedly.\r\n *\r\n * @throws any non-retriable errors.\r\n */\r\n RetryingClient.prototype.attemptFetch = function (request, _a) {\r\n var throttleEndTimeMillis = _a.throttleEndTimeMillis, backoffCount = _a.backoffCount;\r\n return __awaiter(this, void 0, void 0, function () {\r\n var response, e_1, throttleMetadata;\r\n return __generator(this, function (_b) {\r\n switch (_b.label) {\r\n case 0: \r\n // Starts with a (potentially zero) timeout to support resumption from stored state.\r\n // Ensures the throttle end time is honored if the last attempt timed out.\r\n // Note the SDK will never make a request if the fetch timeout expires at this point.\r\n return [4 /*yield*/, setAbortableTimeout(request.signal, throttleEndTimeMillis)];\r\n case 1:\r\n // Starts with a (potentially zero) timeout to support resumption from stored state.\r\n // Ensures the throttle end time is honored if the last attempt timed out.\r\n // Note the SDK will never make a request if the fetch timeout expires at this point.\r\n _b.sent();\r\n _b.label = 2;\r\n case 2:\r\n _b.trys.push([2, 5, , 7]);\r\n return [4 /*yield*/, this.client.fetch(request)];\r\n case 3:\r\n response = _b.sent();\r\n // Note the SDK only clears throttle state if response is success or non-retriable.\r\n return [4 /*yield*/, this.storage.deleteThrottleMetadata()];\r\n case 4:\r\n // Note the SDK only clears throttle state if response is success or non-retriable.\r\n _b.sent();\r\n return [2 /*return*/, response];\r\n case 5:\r\n e_1 = _b.sent();\r\n if (!isRetriableError(e_1)) {\r\n throw e_1;\r\n }\r\n throttleMetadata = {\r\n throttleEndTimeMillis: Date.now() + calculateBackoffMillis(backoffCount),\r\n backoffCount: backoffCount + 1\r\n };\r\n // Persists state.\r\n return [4 /*yield*/, this.storage.setThrottleMetadata(throttleMetadata)];\r\n case 6:\r\n // Persists state.\r\n _b.sent();\r\n return [2 /*return*/, this.attemptFetch(request, throttleMetadata)];\r\n case 7: return [2 /*return*/];\r\n }\r\n });\r\n });\r\n };\r\n return RetryingClient;\r\n}());\n\nvar name = \"@firebase/remote-config\";\nvar version = \"0.1.43\";\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n * http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfunction registerRemoteConfig(firebaseInstance) {\r\n firebaseInstance.INTERNAL.registerComponent(new Component('remoteConfig', remoteConfigFactory, \"PUBLIC\" /* PUBLIC */).setMultipleInstances(true));\r\n firebaseInstance.registerVersion(name, version);\r\n function remoteConfigFactory(container, _a) {\r\n var namespace = _a.instanceIdentifier;\r\n /* Dependencies */\r\n // getImmediate for FirebaseApp will always succeed\r\n var app = container.getProvider('app').getImmediate();\r\n // The following call will always succeed because rc has `import '@firebase/installations'`\r\n var installations = container.getProvider('installations').getImmediate();\r\n // Guards against the SDK being used in non-browser environments.\r\n if (typeof window === 'undefined') {\r\n throw ERROR_FACTORY.create(\"registration-window\" /* REGISTRATION_WINDOW */);\r\n }\r\n // Normalizes optional inputs.\r\n var _b = app.options, projectId = _b.projectId, apiKey = _b.apiKey, appId = _b.appId;\r\n if (!projectId) {\r\n throw ERROR_FACTORY.create(\"registration-project-id\" /* REGISTRATION_PROJECT_ID */);\r\n }\r\n if (!apiKey) {\r\n throw ERROR_FACTORY.create(\"registration-api-key\" /* REGISTRATION_API_KEY */);\r\n }\r\n if (!appId) {\r\n throw ERROR_FACTORY.create(\"registration-app-id\" /* REGISTRATION_APP_ID */);\r\n }\r\n namespace = namespace || 'firebase';\r\n var storage = new Storage(appId, app.name, namespace);\r\n var storageCache = new StorageCache(storage);\r\n var logger = new Logger(name);\r\n // Sets ERROR as the default log level.\r\n // See RemoteConfig#setLogLevel for corresponding normalization to ERROR log level.\r\n logger.logLevel = LogLevel.ERROR;\r\n var restClient = new RestClient(installations, \r\n // Uses the JS SDK version, by which the RC package version can be deduced, if necessary.\r\n firebaseInstance.SDK_VERSION, namespace, projectId, apiKey, appId);\r\n var retryingClient = new RetryingClient(restClient, storage);\r\n var cachingClient = new CachingClient(retryingClient, storage, storageCache, logger);\r\n var remoteConfigInstance = new RemoteConfig(app, cachingClient, storageCache, storage, logger);\r\n // Starts warming cache.\r\n // eslint-disable-next-line @typescript-eslint/no-floating-promises\r\n remoteConfigInstance.ensureInitialized();\r\n return remoteConfigInstance;\r\n }\r\n}\r\nregisterRemoteConfig(firebase);\n\nexport { registerRemoteConfig };\n//# sourceMappingURL=index.esm.js.map\n","import firebase from '@firebase/app';\nexport { default } from '@firebase/app';\nimport '@firebase/auth';\nimport '@firebase/database';\nimport '@firebase/firestore';\nimport '@firebase/firestore/bundle';\nimport '@firebase/functions';\nimport '@firebase/messaging';\nimport '@firebase/storage';\nimport '@firebase/performance';\nimport '@firebase/analytics';\nimport '@firebase/remote-config';\nimport '@firebase/app-check';\n\nvar name$1 = \"firebase\";\nvar version$1 = \"8.10.0\";\n\n/**\r\n * @license\r\n * Copyright 2018 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n * http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfirebase.registerVersion(name$1, version$1, 'app');\r\nfirebase.SDK_VERSION = version$1;\n\nvar name = \"firebase\";\nvar version = \"8.10.0\";\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n * http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nconsole.warn(\"\\nIt looks like you're using the development build of the Firebase JS SDK.\\nWhen deploying Firebase apps to production, it is advisable to only import\\nthe individual SDK components you intend to use.\\n\\nFor the module builds, these are available in the following manner\\n(replace with the name of a component - i.e. auth, database, etc):\\n\\nCommonJS Modules:\\nconst firebase = require('firebase/app');\\nrequire('firebase/');\\n\\nES Modules:\\nimport firebase from 'firebase/app';\\nimport 'firebase/';\\n\\nTypescript:\\nimport firebase from 'firebase/app';\\nimport 'firebase/';\\n\");\r\nfirebase.registerVersion(name, version);\n//# sourceMappingURL=index.esm.js.map\n","'use strict';\nvar redefine = require('../internals/redefine');\nvar anObject = require('../internals/an-object');\nvar $toString = require('../internals/to-string');\nvar fails = require('../internals/fails');\nvar flags = require('../internals/regexp-flags');\n\nvar TO_STRING = 'toString';\nvar RegExpPrototype = RegExp.prototype;\nvar nativeToString = RegExpPrototype[TO_STRING];\n\nvar NOT_GENERIC = fails(function () { return nativeToString.call({ source: 'a', flags: 'b' }) != '/a/b'; });\n// FF44- RegExp#toString has a wrong name\nvar INCORRECT_NAME = nativeToString.name != TO_STRING;\n\n// `RegExp.prototype.toString` method\n// https://tc39.es/ecma262/#sec-regexp.prototype.tostring\nif (NOT_GENERIC || INCORRECT_NAME) {\n redefine(RegExp.prototype, TO_STRING, function toString() {\n var R = anObject(this);\n var p = $toString(R.source);\n var rf = R.flags;\n var f = $toString(rf === undefined && R instanceof RegExp && !('flags' in RegExpPrototype) ? flags.call(R) : rf);\n return '/' + p + '/' + f;\n }, { unsafe: true });\n}\n","'use strict';\nvar getBuiltIn = require('../internals/get-built-in');\nvar definePropertyModule = require('../internals/object-define-property');\nvar wellKnownSymbol = require('../internals/well-known-symbol');\nvar DESCRIPTORS = require('../internals/descriptors');\n\nvar SPECIES = wellKnownSymbol('species');\n\nmodule.exports = function (CONSTRUCTOR_NAME) {\n var Constructor = getBuiltIn(CONSTRUCTOR_NAME);\n var defineProperty = definePropertyModule.f;\n\n if (DESCRIPTORS && Constructor && !Constructor[SPECIES]) {\n defineProperty(Constructor, SPECIES, {\n configurable: true,\n get: function () { return this; }\n });\n }\n};\n","//! moment.js locale configuration\n//! locale : Lithuanian [lt]\n//! author : Mindaugas Mozūras : https://github.com/mmozuras\n\n;(function (global, factory) {\n typeof exports === 'object' && typeof module !== 'undefined'\n && typeof require === 'function' ? factory(require('../moment')) :\n typeof define === 'function' && define.amd ? define(['../moment'], factory) :\n factory(global.moment)\n}(this, (function (moment) { 'use strict';\n\n //! moment.js locale configuration\n\n var units = {\n ss: 'sekundė_sekundžių_sekundes',\n m: 'minutė_minutės_minutę',\n mm: 'minutės_minučių_minutes',\n h: 'valanda_valandos_valandą',\n hh: 'valandos_valandų_valandas',\n d: 'diena_dienos_dieną',\n dd: 'dienos_dienų_dienas',\n M: 'mėnuo_mėnesio_mėnesį',\n MM: 'mėnesiai_mėnesių_mėnesius',\n y: 'metai_metų_metus',\n yy: 'metai_metų_metus',\n };\n function translateSeconds(number, withoutSuffix, key, isFuture) {\n if (withoutSuffix) {\n return 'kelios sekundės';\n } else {\n return isFuture ? 'kelių sekundžių' : 'kelias sekundes';\n }\n }\n function translateSingular(number, withoutSuffix, key, isFuture) {\n return withoutSuffix\n ? forms(key)[0]\n : isFuture\n ? forms(key)[1]\n : forms(key)[2];\n }\n function special(number) {\n return number % 10 === 0 || (number > 10 && number < 20);\n }\n function forms(key) {\n return units[key].split('_');\n }\n function translate(number, withoutSuffix, key, isFuture) {\n var result = number + ' ';\n if (number === 1) {\n return (\n result + translateSingular(number, withoutSuffix, key[0], isFuture)\n );\n } else if (withoutSuffix) {\n return result + (special(number) ? forms(key)[1] : forms(key)[0]);\n } else {\n if (isFuture) {\n return result + forms(key)[1];\n } else {\n return result + (special(number) ? forms(key)[1] : forms(key)[2]);\n }\n }\n }\n var lt = moment.defineLocale('lt', {\n months: {\n format: 'sausio_vasario_kovo_balandžio_gegužės_birželio_liepos_rugpjūčio_rugsėjo_spalio_lapkričio_gruodžio'.split(\n '_'\n ),\n standalone: 'sausis_vasaris_kovas_balandis_gegužė_birželis_liepa_rugpjūtis_rugsėjis_spalis_lapkritis_gruodis'.split(\n '_'\n ),\n isFormat: /D[oD]?(\\[[^\\[\\]]*\\]|\\s)+MMMM?|MMMM?(\\[[^\\[\\]]*\\]|\\s)+D[oD]?/,\n },\n monthsShort: 'sau_vas_kov_bal_geg_bir_lie_rgp_rgs_spa_lap_grd'.split('_'),\n weekdays: {\n format: 'sekmadienį_pirmadienį_antradienį_trečiadienį_ketvirtadienį_penktadienį_šeštadienį'.split(\n '_'\n ),\n standalone: 'sekmadienis_pirmadienis_antradienis_trečiadienis_ketvirtadienis_penktadienis_šeštadienis'.split(\n '_'\n ),\n isFormat: /dddd HH:mm/,\n },\n weekdaysShort: 'Sek_Pir_Ant_Tre_Ket_Pen_Šeš'.split('_'),\n weekdaysMin: 'S_P_A_T_K_Pn_Š'.split('_'),\n weekdaysParseExact: true,\n longDateFormat: {\n LT: 'HH:mm',\n LTS: 'HH:mm:ss',\n L: 'YYYY-MM-DD',\n LL: 'YYYY [m.] MMMM D [d.]',\n LLL: 'YYYY [m.] MMMM D [d.], HH:mm [val.]',\n LLLL: 'YYYY [m.] MMMM D [d.], dddd, HH:mm [val.]',\n l: 'YYYY-MM-DD',\n ll: 'YYYY [m.] MMMM D [d.]',\n lll: 'YYYY [m.] MMMM D [d.], HH:mm [val.]',\n llll: 'YYYY [m.] MMMM D [d.], ddd, HH:mm [val.]',\n },\n calendar: {\n sameDay: '[Šiandien] LT',\n nextDay: '[Rytoj] LT',\n nextWeek: 'dddd LT',\n lastDay: '[Vakar] LT',\n lastWeek: '[Praėjusį] dddd LT',\n sameElse: 'L',\n },\n relativeTime: {\n future: 'po %s',\n past: 'prieš %s',\n s: translateSeconds,\n ss: translate,\n m: translateSingular,\n mm: translate,\n h: translateSingular,\n hh: translate,\n d: translateSingular,\n dd: translate,\n M: translateSingular,\n MM: translate,\n y: translateSingular,\n yy: translate,\n },\n dayOfMonthOrdinalParse: /\\d{1,2}-oji/,\n ordinal: function (number) {\n return number + '-oji';\n },\n week: {\n dow: 1, // Monday is the first day of the week.\n doy: 4, // The week that contains Jan 4th is the first week of the year.\n },\n });\n\n return lt;\n\n})));\n","/* globals __VUE_SSR_CONTEXT__ */\n\n// IMPORTANT: Do NOT use ES2015 features in this file (except for modules).\n// This module is a runtime utility for cleaner component module output and will\n// be included in the final webpack user bundle.\n\nexport default function normalizeComponent (\n scriptExports,\n render,\n staticRenderFns,\n functionalTemplate,\n injectStyles,\n scopeId,\n moduleIdentifier, /* server only */\n shadowMode /* vue-cli only */\n) {\n // Vue.extend constructor export interop\n var options = typeof scriptExports === 'function'\n ? scriptExports.options\n : scriptExports\n\n // render functions\n if (render) {\n options.render = render\n options.staticRenderFns = staticRenderFns\n options._compiled = true\n }\n\n // functional template\n if (functionalTemplate) {\n options.functional = true\n }\n\n // scopedId\n if (scopeId) {\n options._scopeId = 'data-v-' + scopeId\n }\n\n var hook\n if (moduleIdentifier) { // server build\n hook = function (context) {\n // 2.3 injection\n context =\n context || // cached call\n (this.$vnode && this.$vnode.ssrContext) || // stateful\n (this.parent && this.parent.$vnode && this.parent.$vnode.ssrContext) // functional\n // 2.2 with runInNewContext: true\n if (!context && typeof __VUE_SSR_CONTEXT__ !== 'undefined') {\n context = __VUE_SSR_CONTEXT__\n }\n // inject component styles\n if (injectStyles) {\n injectStyles.call(this, context)\n }\n // register component module identifier for async chunk inferrence\n if (context && context._registeredComponents) {\n context._registeredComponents.add(moduleIdentifier)\n }\n }\n // used by ssr in case component is cached and beforeCreate\n // never gets called\n options._ssrRegister = hook\n } else if (injectStyles) {\n hook = shadowMode\n ? function () {\n injectStyles.call(\n this,\n (options.functional ? this.parent : this).$root.$options.shadowRoot\n )\n }\n : injectStyles\n }\n\n if (hook) {\n if (options.functional) {\n // for template-only hot-reload because in that case the render fn doesn't\n // go through the normalizer\n options._injectStyles = hook\n // register for functional component in vue file\n var originalRender = options.render\n options.render = function renderWithStyleInjection (h, context) {\n hook.call(context)\n return originalRender(h, context)\n }\n } else {\n // inject component registration as beforeCreate hook\n var existing = options.beforeCreate\n options.beforeCreate = existing\n ? [].concat(existing, hook)\n : [hook]\n }\n }\n\n return {\n exports: scriptExports,\n options: options\n }\n}\n","export default function _arrayLikeToArray(arr, len) {\n if (len == null || len > arr.length) len = arr.length;\n\n for (var i = 0, arr2 = new Array(len); i < len; i++) {\n arr2[i] = arr[i];\n }\n\n return arr2;\n}","import arrayLikeToArray from \"./arrayLikeToArray.js\";\nexport default function _arrayWithoutHoles(arr) {\n if (Array.isArray(arr)) return arrayLikeToArray(arr);\n}","export default function _iterableToArray(iter) {\n if (typeof Symbol !== \"undefined\" && iter[Symbol.iterator] != null || iter[\"@@iterator\"] != null) return Array.from(iter);\n}","import arrayLikeToArray from \"./arrayLikeToArray.js\";\nexport default function _unsupportedIterableToArray(o, minLen) {\n if (!o) return;\n if (typeof o === \"string\") return arrayLikeToArray(o, minLen);\n var n = Object.prototype.toString.call(o).slice(8, -1);\n if (n === \"Object\" && o.constructor) n = o.constructor.name;\n if (n === \"Map\" || n === \"Set\") return Array.from(o);\n if (n === \"Arguments\" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return arrayLikeToArray(o, minLen);\n}","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}","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}","//! moment.js locale configuration\n//! locale : Vietnamese [vi]\n//! author : Bang Nguyen : https://github.com/bangnk\n//! author : Chien Kira : https://github.com/chienkira\n\n;(function (global, factory) {\n typeof exports === 'object' && typeof module !== 'undefined'\n && typeof require === 'function' ? factory(require('../moment')) :\n typeof define === 'function' && define.amd ? define(['../moment'], factory) :\n factory(global.moment)\n}(this, (function (moment) { 'use strict';\n\n //! moment.js locale configuration\n\n var vi = moment.defineLocale('vi', {\n months: 'tháng 1_tháng 2_tháng 3_tháng 4_tháng 5_tháng 6_tháng 7_tháng 8_tháng 9_tháng 10_tháng 11_tháng 12'.split(\n '_'\n ),\n monthsShort: 'Thg 01_Thg 02_Thg 03_Thg 04_Thg 05_Thg 06_Thg 07_Thg 08_Thg 09_Thg 10_Thg 11_Thg 12'.split(\n '_'\n ),\n monthsParseExact: true,\n weekdays: 'chủ nhật_thứ hai_thứ ba_thứ tư_thứ năm_thứ sáu_thứ bảy'.split(\n '_'\n ),\n weekdaysShort: 'CN_T2_T3_T4_T5_T6_T7'.split('_'),\n weekdaysMin: 'CN_T2_T3_T4_T5_T6_T7'.split('_'),\n weekdaysParseExact: true,\n meridiemParse: /sa|ch/i,\n isPM: function (input) {\n return /^ch$/i.test(input);\n },\n meridiem: function (hours, minutes, isLower) {\n if (hours < 12) {\n return isLower ? 'sa' : 'SA';\n } else {\n return isLower ? 'ch' : 'CH';\n }\n },\n longDateFormat: {\n LT: 'HH:mm',\n LTS: 'HH:mm:ss',\n L: 'DD/MM/YYYY',\n LL: 'D MMMM [năm] YYYY',\n LLL: 'D MMMM [năm] YYYY HH:mm',\n LLLL: 'dddd, D MMMM [năm] YYYY HH:mm',\n l: 'DD/M/YYYY',\n ll: 'D MMM YYYY',\n lll: 'D MMM YYYY HH:mm',\n llll: 'ddd, D MMM YYYY HH:mm',\n },\n calendar: {\n sameDay: '[Hôm nay lúc] LT',\n nextDay: '[Ngày mai lúc] LT',\n nextWeek: 'dddd [tuần tới lúc] LT',\n lastDay: '[Hôm qua lúc] LT',\n lastWeek: 'dddd [tuần trước lúc] LT',\n sameElse: 'L',\n },\n relativeTime: {\n future: '%s tới',\n past: '%s trước',\n s: 'vài giây',\n ss: '%d giây',\n m: 'một phút',\n mm: '%d phút',\n h: 'một giờ',\n hh: '%d giờ',\n d: 'một ngày',\n dd: '%d ngày',\n w: 'một tuần',\n ww: '%d tuần',\n M: 'một tháng',\n MM: '%d tháng',\n y: 'một năm',\n yy: '%d năm',\n },\n dayOfMonthOrdinalParse: /\\d{1,2}/,\n ordinal: function (number) {\n return number;\n },\n week: {\n dow: 1, // Monday is the first day of the week.\n doy: 4, // The week that contains Jan 4th is the first week of the year.\n },\n });\n\n return vi;\n\n})));\n","//! moment.js locale configuration\n//! locale : Montenegrin [me]\n//! author : Miodrag Nikač : https://github.com/miodragnikac\n\n;(function (global, factory) {\n typeof exports === 'object' && typeof module !== 'undefined'\n && typeof require === 'function' ? factory(require('../moment')) :\n typeof define === 'function' && define.amd ? define(['../moment'], factory) :\n factory(global.moment)\n}(this, (function (moment) { 'use strict';\n\n //! moment.js locale configuration\n\n var translator = {\n words: {\n //Different grammatical cases\n ss: ['sekund', 'sekunda', 'sekundi'],\n m: ['jedan minut', 'jednog minuta'],\n mm: ['minut', 'minuta', 'minuta'],\n h: ['jedan sat', 'jednog sata'],\n hh: ['sat', 'sata', 'sati'],\n dd: ['dan', 'dana', 'dana'],\n MM: ['mjesec', 'mjeseca', 'mjeseci'],\n yy: ['godina', 'godine', 'godina'],\n },\n correctGrammaticalCase: function (number, wordKey) {\n return number === 1\n ? wordKey[0]\n : number >= 2 && number <= 4\n ? wordKey[1]\n : wordKey[2];\n },\n translate: function (number, withoutSuffix, key) {\n var wordKey = translator.words[key];\n if (key.length === 1) {\n return withoutSuffix ? wordKey[0] : wordKey[1];\n } else {\n return (\n number +\n ' ' +\n translator.correctGrammaticalCase(number, wordKey)\n );\n }\n },\n };\n\n var me = moment.defineLocale('me', {\n months: 'januar_februar_mart_april_maj_jun_jul_avgust_septembar_oktobar_novembar_decembar'.split(\n '_'\n ),\n monthsShort: 'jan._feb._mar._apr._maj_jun_jul_avg._sep._okt._nov._dec.'.split(\n '_'\n ),\n monthsParseExact: true,\n weekdays: 'nedjelja_ponedjeljak_utorak_srijeda_četvrtak_petak_subota'.split(\n '_'\n ),\n weekdaysShort: 'ned._pon._uto._sri._čet._pet._sub.'.split('_'),\n weekdaysMin: 'ne_po_ut_sr_če_pe_su'.split('_'),\n weekdaysParseExact: true,\n longDateFormat: {\n LT: 'H:mm',\n LTS: 'H:mm:ss',\n L: 'DD.MM.YYYY',\n LL: 'D. MMMM YYYY',\n LLL: 'D. MMMM YYYY H:mm',\n LLLL: 'dddd, D. MMMM YYYY H:mm',\n },\n calendar: {\n sameDay: '[danas u] LT',\n nextDay: '[sjutra u] LT',\n\n nextWeek: function () {\n switch (this.day()) {\n case 0:\n return '[u] [nedjelju] [u] LT';\n case 3:\n return '[u] [srijedu] [u] LT';\n case 6:\n return '[u] [subotu] [u] LT';\n case 1:\n case 2:\n case 4:\n case 5:\n return '[u] dddd [u] LT';\n }\n },\n lastDay: '[juče u] LT',\n lastWeek: function () {\n var lastWeekDays = [\n '[prošle] [nedjelje] [u] LT',\n '[prošlog] [ponedjeljka] [u] LT',\n '[prošlog] [utorka] [u] LT',\n '[prošle] [srijede] [u] LT',\n '[prošlog] [četvrtka] [u] LT',\n '[prošlog] [petka] [u] LT',\n '[prošle] [subote] [u] LT',\n ];\n return lastWeekDays[this.day()];\n },\n sameElse: 'L',\n },\n relativeTime: {\n future: 'za %s',\n past: 'prije %s',\n s: 'nekoliko sekundi',\n ss: translator.translate,\n m: translator.translate,\n mm: translator.translate,\n h: translator.translate,\n hh: translator.translate,\n d: 'dan',\n dd: translator.translate,\n M: 'mjesec',\n MM: translator.translate,\n y: 'godinu',\n yy: translator.translate,\n },\n dayOfMonthOrdinalParse: /\\d{1,2}\\./,\n ordinal: '%d.',\n week: {\n dow: 1, // Monday is the first day of the week.\n doy: 7, // The week that contains Jan 7th is the first week of the year.\n },\n });\n\n return me;\n\n})));\n","var anObject = require('../internals/an-object');\n\nmodule.exports = function (iterator) {\n var returnMethod = iterator['return'];\n if (returnMethod !== undefined) {\n return anObject(returnMethod.call(iterator)).value;\n }\n};\n","/*!\n * Vue.js v2.6.14\n * (c) 2014-2021 Evan You\n * Released under the MIT License.\n */\n/* */\n\nvar emptyObject = Object.freeze({});\n\n// These helpers produce better VM code in JS engines due to their\n// explicitness and function inlining.\nfunction isUndef (v) {\n return v === undefined || v === null\n}\n\nfunction isDef (v) {\n return v !== undefined && v !== null\n}\n\nfunction isTrue (v) {\n return v === true\n}\n\nfunction isFalse (v) {\n return v === false\n}\n\n/**\n * Check if value is primitive.\n */\nfunction isPrimitive (value) {\n return (\n typeof value === 'string' ||\n typeof value === 'number' ||\n // $flow-disable-line\n typeof value === 'symbol' ||\n typeof value === 'boolean'\n )\n}\n\n/**\n * Quick object check - this is primarily used to tell\n * Objects from primitive values when we know the value\n * is a JSON-compliant type.\n */\nfunction isObject (obj) {\n return obj !== null && typeof obj === 'object'\n}\n\n/**\n * Get the raw type string of a value, e.g., [object Object].\n */\nvar _toString = Object.prototype.toString;\n\nfunction toRawType (value) {\n return _toString.call(value).slice(8, -1)\n}\n\n/**\n * Strict object type check. Only returns true\n * for plain JavaScript objects.\n */\nfunction isPlainObject (obj) {\n return _toString.call(obj) === '[object Object]'\n}\n\nfunction isRegExp (v) {\n return _toString.call(v) === '[object RegExp]'\n}\n\n/**\n * Check if val is a valid array index.\n */\nfunction isValidArrayIndex (val) {\n var n = parseFloat(String(val));\n return n >= 0 && Math.floor(n) === n && isFinite(val)\n}\n\nfunction isPromise (val) {\n return (\n isDef(val) &&\n typeof val.then === 'function' &&\n typeof val.catch === 'function'\n )\n}\n\n/**\n * Convert a value to a string that is actually rendered.\n */\nfunction toString (val) {\n return val == null\n ? ''\n : Array.isArray(val) || (isPlainObject(val) && val.toString === _toString)\n ? JSON.stringify(val, null, 2)\n : String(val)\n}\n\n/**\n * Convert an input value to a number for persistence.\n * If the conversion fails, return original string.\n */\nfunction toNumber (val) {\n var n = parseFloat(val);\n return isNaN(n) ? val : n\n}\n\n/**\n * Make a map and return a function for checking if a key\n * is in that map.\n */\nfunction makeMap (\n str,\n expectsLowerCase\n) {\n var map = Object.create(null);\n var list = str.split(',');\n for (var i = 0; i < list.length; i++) {\n map[list[i]] = true;\n }\n return expectsLowerCase\n ? function (val) { return map[val.toLowerCase()]; }\n : function (val) { return map[val]; }\n}\n\n/**\n * Check if a tag is a built-in tag.\n */\nvar isBuiltInTag = makeMap('slot,component', true);\n\n/**\n * Check if an attribute is a reserved attribute.\n */\nvar isReservedAttribute = makeMap('key,ref,slot,slot-scope,is');\n\n/**\n * Remove an item from an array.\n */\nfunction remove (arr, item) {\n if (arr.length) {\n var index = arr.indexOf(item);\n if (index > -1) {\n return arr.splice(index, 1)\n }\n }\n}\n\n/**\n * Check whether an object has the property.\n */\nvar hasOwnProperty = Object.prototype.hasOwnProperty;\nfunction hasOwn (obj, key) {\n return hasOwnProperty.call(obj, key)\n}\n\n/**\n * Create a cached version of a pure function.\n */\nfunction cached (fn) {\n var cache = Object.create(null);\n return (function cachedFn (str) {\n var hit = cache[str];\n return hit || (cache[str] = fn(str))\n })\n}\n\n/**\n * Camelize a hyphen-delimited string.\n */\nvar camelizeRE = /-(\\w)/g;\nvar camelize = cached(function (str) {\n return str.replace(camelizeRE, function (_, c) { return c ? c.toUpperCase() : ''; })\n});\n\n/**\n * Capitalize a string.\n */\nvar capitalize = cached(function (str) {\n return str.charAt(0).toUpperCase() + str.slice(1)\n});\n\n/**\n * Hyphenate a camelCase string.\n */\nvar hyphenateRE = /\\B([A-Z])/g;\nvar hyphenate = cached(function (str) {\n return str.replace(hyphenateRE, '-$1').toLowerCase()\n});\n\n/**\n * Simple bind polyfill for environments that do not support it,\n * e.g., PhantomJS 1.x. Technically, we don't need this anymore\n * since native bind is now performant enough in most browsers.\n * But removing it would mean breaking code that was able to run in\n * PhantomJS 1.x, so this must be kept for backward compatibility.\n */\n\n/* istanbul ignore next */\nfunction polyfillBind (fn, ctx) {\n function boundFn (a) {\n var l = arguments.length;\n return l\n ? l > 1\n ? fn.apply(ctx, arguments)\n : fn.call(ctx, a)\n : fn.call(ctx)\n }\n\n boundFn._length = fn.length;\n return boundFn\n}\n\nfunction nativeBind (fn, ctx) {\n return fn.bind(ctx)\n}\n\nvar bind = Function.prototype.bind\n ? nativeBind\n : polyfillBind;\n\n/**\n * Convert an Array-like object to a real Array.\n */\nfunction toArray (list, start) {\n start = start || 0;\n var i = list.length - start;\n var ret = new Array(i);\n while (i--) {\n ret[i] = list[i + start];\n }\n return ret\n}\n\n/**\n * Mix properties into target object.\n */\nfunction extend (to, _from) {\n for (var key in _from) {\n to[key] = _from[key];\n }\n return to\n}\n\n/**\n * Merge an Array of Objects into a single Object.\n */\nfunction toObject (arr) {\n var res = {};\n for (var i = 0; i < arr.length; i++) {\n if (arr[i]) {\n extend(res, arr[i]);\n }\n }\n return res\n}\n\n/* eslint-disable no-unused-vars */\n\n/**\n * Perform no operation.\n * Stubbing args to make Flow happy without leaving useless transpiled code\n * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/).\n */\nfunction noop (a, b, c) {}\n\n/**\n * Always return false.\n */\nvar no = function (a, b, c) { return false; };\n\n/* eslint-enable no-unused-vars */\n\n/**\n * Return the same value.\n */\nvar identity = function (_) { return _; };\n\n/**\n * Check if two values are loosely equal - that is,\n * if they are plain objects, do they have the same shape?\n */\nfunction looseEqual (a, b) {\n if (a === b) { return true }\n var isObjectA = isObject(a);\n var isObjectB = isObject(b);\n if (isObjectA && isObjectB) {\n try {\n var isArrayA = Array.isArray(a);\n var isArrayB = Array.isArray(b);\n if (isArrayA && isArrayB) {\n return a.length === b.length && a.every(function (e, i) {\n return looseEqual(e, b[i])\n })\n } else if (a instanceof Date && b instanceof Date) {\n return a.getTime() === b.getTime()\n } else if (!isArrayA && !isArrayB) {\n var keysA = Object.keys(a);\n var keysB = Object.keys(b);\n return keysA.length === keysB.length && keysA.every(function (key) {\n return looseEqual(a[key], b[key])\n })\n } else {\n /* istanbul ignore next */\n return false\n }\n } catch (e) {\n /* istanbul ignore next */\n return false\n }\n } else if (!isObjectA && !isObjectB) {\n return String(a) === String(b)\n } else {\n return false\n }\n}\n\n/**\n * Return the first index at which a loosely equal value can be\n * found in the array (if value is a plain object, the array must\n * contain an object of the same shape), or -1 if it is not present.\n */\nfunction looseIndexOf (arr, val) {\n for (var i = 0; i < arr.length; i++) {\n if (looseEqual(arr[i], val)) { return i }\n }\n return -1\n}\n\n/**\n * Ensure a function is called only once.\n */\nfunction once (fn) {\n var called = false;\n return function () {\n if (!called) {\n called = true;\n fn.apply(this, arguments);\n }\n }\n}\n\nvar SSR_ATTR = 'data-server-rendered';\n\nvar ASSET_TYPES = [\n 'component',\n 'directive',\n 'filter'\n];\n\nvar LIFECYCLE_HOOKS = [\n 'beforeCreate',\n 'created',\n 'beforeMount',\n 'mounted',\n 'beforeUpdate',\n 'updated',\n 'beforeDestroy',\n 'destroyed',\n 'activated',\n 'deactivated',\n 'errorCaptured',\n 'serverPrefetch'\n];\n\n/* */\n\n\n\nvar config = ({\n /**\n * Option merge strategies (used in core/util/options)\n */\n // $flow-disable-line\n optionMergeStrategies: Object.create(null),\n\n /**\n * Whether to suppress warnings.\n */\n silent: false,\n\n /**\n * Show production mode tip message on boot?\n */\n productionTip: process.env.NODE_ENV !== 'production',\n\n /**\n * Whether to enable devtools\n */\n devtools: process.env.NODE_ENV !== 'production',\n\n /**\n * Whether to record perf\n */\n performance: false,\n\n /**\n * Error handler for watcher errors\n */\n errorHandler: null,\n\n /**\n * Warn handler for watcher warns\n */\n warnHandler: null,\n\n /**\n * Ignore certain custom elements\n */\n ignoredElements: [],\n\n /**\n * Custom user key aliases for v-on\n */\n // $flow-disable-line\n keyCodes: Object.create(null),\n\n /**\n * Check if a tag is reserved so that it cannot be registered as a\n * component. This is platform-dependent and may be overwritten.\n */\n isReservedTag: no,\n\n /**\n * Check if an attribute is reserved so that it cannot be used as a component\n * prop. This is platform-dependent and may be overwritten.\n */\n isReservedAttr: no,\n\n /**\n * Check if a tag is an unknown element.\n * Platform-dependent.\n */\n isUnknownElement: no,\n\n /**\n * Get the namespace of an element\n */\n getTagNamespace: noop,\n\n /**\n * Parse the real tag name for the specific platform.\n */\n parsePlatformTagName: identity,\n\n /**\n * Check if an attribute must be bound using property, e.g. value\n * Platform-dependent.\n */\n mustUseProp: no,\n\n /**\n * Perform updates asynchronously. Intended to be used by Vue Test Utils\n * This will significantly reduce performance if set to false.\n */\n async: true,\n\n /**\n * Exposed for legacy reasons\n */\n _lifecycleHooks: LIFECYCLE_HOOKS\n});\n\n/* */\n\n/**\n * unicode letters used for parsing html tags, component names and property paths.\n * using https://www.w3.org/TR/html53/semantics-scripting.html#potentialcustomelementname\n * skipping \\u10000-\\uEFFFF due to it freezing up PhantomJS\n */\nvar unicodeRegExp = /a-zA-Z\\u00B7\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u203F-\\u2040\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD/;\n\n/**\n * Check if a string starts with $ or _\n */\nfunction isReserved (str) {\n var c = (str + '').charCodeAt(0);\n return c === 0x24 || c === 0x5F\n}\n\n/**\n * Define a property.\n */\nfunction def (obj, key, val, enumerable) {\n Object.defineProperty(obj, key, {\n value: val,\n enumerable: !!enumerable,\n writable: true,\n configurable: true\n });\n}\n\n/**\n * Parse simple path.\n */\nvar bailRE = new RegExp((\"[^\" + (unicodeRegExp.source) + \".$_\\\\d]\"));\nfunction parsePath (path) {\n if (bailRE.test(path)) {\n return\n }\n var segments = path.split('.');\n return function (obj) {\n for (var i = 0; i < segments.length; i++) {\n if (!obj) { return }\n obj = obj[segments[i]];\n }\n return obj\n }\n}\n\n/* */\n\n// can we use __proto__?\nvar hasProto = '__proto__' in {};\n\n// Browser environment sniffing\nvar inBrowser = typeof window !== 'undefined';\nvar inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform;\nvar weexPlatform = inWeex && WXEnvironment.platform.toLowerCase();\nvar UA = inBrowser && window.navigator.userAgent.toLowerCase();\nvar isIE = UA && /msie|trident/.test(UA);\nvar isIE9 = UA && UA.indexOf('msie 9.0') > 0;\nvar isEdge = UA && UA.indexOf('edge/') > 0;\nvar isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android');\nvar isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios');\nvar isChrome = UA && /chrome\\/\\d+/.test(UA) && !isEdge;\nvar isPhantomJS = UA && /phantomjs/.test(UA);\nvar isFF = UA && UA.match(/firefox\\/(\\d+)/);\n\n// Firefox has a \"watch\" function on Object.prototype...\nvar nativeWatch = ({}).watch;\n\nvar supportsPassive = false;\nif (inBrowser) {\n try {\n var opts = {};\n Object.defineProperty(opts, 'passive', ({\n get: function get () {\n /* istanbul ignore next */\n supportsPassive = true;\n }\n })); // https://github.com/facebook/flow/issues/285\n window.addEventListener('test-passive', null, opts);\n } catch (e) {}\n}\n\n// this needs to be lazy-evaled because vue may be required before\n// vue-server-renderer can set VUE_ENV\nvar _isServer;\nvar isServerRendering = function () {\n if (_isServer === undefined) {\n /* istanbul ignore if */\n if (!inBrowser && !inWeex && typeof global !== 'undefined') {\n // detect presence of vue-server-renderer and avoid\n // Webpack shimming the process\n _isServer = global['process'] && global['process'].env.VUE_ENV === 'server';\n } else {\n _isServer = false;\n }\n }\n return _isServer\n};\n\n// detect devtools\nvar devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;\n\n/* istanbul ignore next */\nfunction isNative (Ctor) {\n return typeof Ctor === 'function' && /native code/.test(Ctor.toString())\n}\n\nvar hasSymbol =\n typeof Symbol !== 'undefined' && isNative(Symbol) &&\n typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys);\n\nvar _Set;\n/* istanbul ignore if */ // $flow-disable-line\nif (typeof Set !== 'undefined' && isNative(Set)) {\n // use native Set when available.\n _Set = Set;\n} else {\n // a non-standard Set polyfill that only works with primitive keys.\n _Set = /*@__PURE__*/(function () {\n function Set () {\n this.set = Object.create(null);\n }\n Set.prototype.has = function has (key) {\n return this.set[key] === true\n };\n Set.prototype.add = function add (key) {\n this.set[key] = true;\n };\n Set.prototype.clear = function clear () {\n this.set = Object.create(null);\n };\n\n return Set;\n }());\n}\n\n/* */\n\nvar warn = noop;\nvar tip = noop;\nvar generateComponentTrace = (noop); // work around flow check\nvar formatComponentName = (noop);\n\nif (process.env.NODE_ENV !== 'production') {\n var hasConsole = typeof console !== 'undefined';\n var classifyRE = /(?:^|[-_])(\\w)/g;\n var classify = function (str) { return str\n .replace(classifyRE, function (c) { return c.toUpperCase(); })\n .replace(/[-_]/g, ''); };\n\n warn = function (msg, vm) {\n var trace = vm ? generateComponentTrace(vm) : '';\n\n if (config.warnHandler) {\n config.warnHandler.call(null, msg, vm, trace);\n } else if (hasConsole && (!config.silent)) {\n console.error((\"[Vue warn]: \" + msg + trace));\n }\n };\n\n tip = function (msg, vm) {\n if (hasConsole && (!config.silent)) {\n console.warn(\"[Vue tip]: \" + msg + (\n vm ? generateComponentTrace(vm) : ''\n ));\n }\n };\n\n formatComponentName = function (vm, includeFile) {\n if (vm.$root === vm) {\n return ''\n }\n var options = typeof vm === 'function' && vm.cid != null\n ? vm.options\n : vm._isVue\n ? vm.$options || vm.constructor.options\n : vm;\n var name = options.name || options._componentTag;\n var file = options.__file;\n if (!name && file) {\n var match = file.match(/([^/\\\\]+)\\.vue$/);\n name = match && match[1];\n }\n\n return (\n (name ? (\"<\" + (classify(name)) + \">\") : \"\") +\n (file && includeFile !== false ? (\" at \" + file) : '')\n )\n };\n\n var repeat = function (str, n) {\n var res = '';\n while (n) {\n if (n % 2 === 1) { res += str; }\n if (n > 1) { str += str; }\n n >>= 1;\n }\n return res\n };\n\n generateComponentTrace = function (vm) {\n if (vm._isVue && vm.$parent) {\n var tree = [];\n var currentRecursiveSequence = 0;\n while (vm) {\n if (tree.length > 0) {\n var last = tree[tree.length - 1];\n if (last.constructor === vm.constructor) {\n currentRecursiveSequence++;\n vm = vm.$parent;\n continue\n } else if (currentRecursiveSequence > 0) {\n tree[tree.length - 1] = [last, currentRecursiveSequence];\n currentRecursiveSequence = 0;\n }\n }\n tree.push(vm);\n vm = vm.$parent;\n }\n return '\\n\\nfound in\\n\\n' + tree\n .map(function (vm, i) { return (\"\" + (i === 0 ? '---> ' : repeat(' ', 5 + i * 2)) + (Array.isArray(vm)\n ? ((formatComponentName(vm[0])) + \"... (\" + (vm[1]) + \" recursive calls)\")\n : formatComponentName(vm))); })\n .join('\\n')\n } else {\n return (\"\\n\\n(found in \" + (formatComponentName(vm)) + \")\")\n }\n };\n}\n\n/* */\n\nvar uid = 0;\n\n/**\n * A dep is an observable that can have multiple\n * directives subscribing to it.\n */\nvar Dep = function Dep () {\n this.id = uid++;\n this.subs = [];\n};\n\nDep.prototype.addSub = function addSub (sub) {\n this.subs.push(sub);\n};\n\nDep.prototype.removeSub = function removeSub (sub) {\n remove(this.subs, sub);\n};\n\nDep.prototype.depend = function depend () {\n if (Dep.target) {\n Dep.target.addDep(this);\n }\n};\n\nDep.prototype.notify = function notify () {\n // stabilize the subscriber list first\n var subs = this.subs.slice();\n if (process.env.NODE_ENV !== 'production' && !config.async) {\n // subs aren't sorted in scheduler if not running async\n // we need to sort them now to make sure they fire in correct\n // order\n subs.sort(function (a, b) { return a.id - b.id; });\n }\n for (var i = 0, l = subs.length; i < l; i++) {\n subs[i].update();\n }\n};\n\n// The current target watcher being evaluated.\n// This is globally unique because only one watcher\n// can be evaluated at a time.\nDep.target = null;\nvar targetStack = [];\n\nfunction pushTarget (target) {\n targetStack.push(target);\n Dep.target = target;\n}\n\nfunction popTarget () {\n targetStack.pop();\n Dep.target = targetStack[targetStack.length - 1];\n}\n\n/* */\n\nvar VNode = function VNode (\n tag,\n data,\n children,\n text,\n elm,\n context,\n componentOptions,\n asyncFactory\n) {\n this.tag = tag;\n this.data = data;\n this.children = children;\n this.text = text;\n this.elm = elm;\n this.ns = undefined;\n this.context = context;\n this.fnContext = undefined;\n this.fnOptions = undefined;\n this.fnScopeId = undefined;\n this.key = data && data.key;\n this.componentOptions = componentOptions;\n this.componentInstance = undefined;\n this.parent = undefined;\n this.raw = false;\n this.isStatic = false;\n this.isRootInsert = true;\n this.isComment = false;\n this.isCloned = false;\n this.isOnce = false;\n this.asyncFactory = asyncFactory;\n this.asyncMeta = undefined;\n this.isAsyncPlaceholder = false;\n};\n\nvar prototypeAccessors = { child: { configurable: true } };\n\n// DEPRECATED: alias for componentInstance for backwards compat.\n/* istanbul ignore next */\nprototypeAccessors.child.get = function () {\n return this.componentInstance\n};\n\nObject.defineProperties( VNode.prototype, prototypeAccessors );\n\nvar createEmptyVNode = function (text) {\n if ( text === void 0 ) text = '';\n\n var node = new VNode();\n node.text = text;\n node.isComment = true;\n return node\n};\n\nfunction createTextVNode (val) {\n return new VNode(undefined, undefined, undefined, String(val))\n}\n\n// optimized shallow clone\n// used for static nodes and slot nodes because they may be reused across\n// multiple renders, cloning them avoids errors when DOM manipulations rely\n// on their elm reference.\nfunction cloneVNode (vnode) {\n var cloned = new VNode(\n vnode.tag,\n vnode.data,\n // #7975\n // clone children array to avoid mutating original in case of cloning\n // a child.\n vnode.children && vnode.children.slice(),\n vnode.text,\n vnode.elm,\n vnode.context,\n vnode.componentOptions,\n vnode.asyncFactory\n );\n cloned.ns = vnode.ns;\n cloned.isStatic = vnode.isStatic;\n cloned.key = vnode.key;\n cloned.isComment = vnode.isComment;\n cloned.fnContext = vnode.fnContext;\n cloned.fnOptions = vnode.fnOptions;\n cloned.fnScopeId = vnode.fnScopeId;\n cloned.asyncMeta = vnode.asyncMeta;\n cloned.isCloned = true;\n return cloned\n}\n\n/*\n * not type checking this file because flow doesn't play well with\n * dynamically accessing methods on Array prototype\n */\n\nvar arrayProto = Array.prototype;\nvar arrayMethods = Object.create(arrayProto);\n\nvar methodsToPatch = [\n 'push',\n 'pop',\n 'shift',\n 'unshift',\n 'splice',\n 'sort',\n 'reverse'\n];\n\n/**\n * Intercept mutating methods and emit events\n */\nmethodsToPatch.forEach(function (method) {\n // cache original method\n var original = arrayProto[method];\n def(arrayMethods, method, function mutator () {\n var args = [], len = arguments.length;\n while ( len-- ) args[ len ] = arguments[ len ];\n\n var result = original.apply(this, args);\n var ob = this.__ob__;\n var inserted;\n switch (method) {\n case 'push':\n case 'unshift':\n inserted = args;\n break\n case 'splice':\n inserted = args.slice(2);\n break\n }\n if (inserted) { ob.observeArray(inserted); }\n // notify change\n ob.dep.notify();\n return result\n });\n});\n\n/* */\n\nvar arrayKeys = Object.getOwnPropertyNames(arrayMethods);\n\n/**\n * In some cases we may want to disable observation inside a component's\n * update computation.\n */\nvar shouldObserve = true;\n\nfunction toggleObserving (value) {\n shouldObserve = value;\n}\n\n/**\n * Observer class that is attached to each observed\n * object. Once attached, the observer converts the target\n * object's property keys into getter/setters that\n * collect dependencies and dispatch updates.\n */\nvar Observer = function Observer (value) {\n this.value = value;\n this.dep = new Dep();\n this.vmCount = 0;\n def(value, '__ob__', this);\n if (Array.isArray(value)) {\n if (hasProto) {\n protoAugment(value, arrayMethods);\n } else {\n copyAugment(value, arrayMethods, arrayKeys);\n }\n this.observeArray(value);\n } else {\n this.walk(value);\n }\n};\n\n/**\n * Walk through all properties and convert them into\n * getter/setters. This method should only be called when\n * value type is Object.\n */\nObserver.prototype.walk = function walk (obj) {\n var keys = Object.keys(obj);\n for (var i = 0; i < keys.length; i++) {\n defineReactive$$1(obj, keys[i]);\n }\n};\n\n/**\n * Observe a list of Array items.\n */\nObserver.prototype.observeArray = function observeArray (items) {\n for (var i = 0, l = items.length; i < l; i++) {\n observe(items[i]);\n }\n};\n\n// helpers\n\n/**\n * Augment a target Object or Array by intercepting\n * the prototype chain using __proto__\n */\nfunction protoAugment (target, src) {\n /* eslint-disable no-proto */\n target.__proto__ = src;\n /* eslint-enable no-proto */\n}\n\n/**\n * Augment a target Object or Array by defining\n * hidden properties.\n */\n/* istanbul ignore next */\nfunction copyAugment (target, src, keys) {\n for (var i = 0, l = keys.length; i < l; i++) {\n var key = keys[i];\n def(target, key, src[key]);\n }\n}\n\n/**\n * Attempt to create an observer instance for a value,\n * returns the new observer if successfully observed,\n * or the existing observer if the value already has one.\n */\nfunction observe (value, asRootData) {\n if (!isObject(value) || value instanceof VNode) {\n return\n }\n var ob;\n if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {\n ob = value.__ob__;\n } else if (\n shouldObserve &&\n !isServerRendering() &&\n (Array.isArray(value) || isPlainObject(value)) &&\n Object.isExtensible(value) &&\n !value._isVue\n ) {\n ob = new Observer(value);\n }\n if (asRootData && ob) {\n ob.vmCount++;\n }\n return ob\n}\n\n/**\n * Define a reactive property on an Object.\n */\nfunction defineReactive$$1 (\n obj,\n key,\n val,\n customSetter,\n shallow\n) {\n var dep = new Dep();\n\n var property = Object.getOwnPropertyDescriptor(obj, key);\n if (property && property.configurable === false) {\n return\n }\n\n // cater for pre-defined getter/setters\n var getter = property && property.get;\n var setter = property && property.set;\n if ((!getter || setter) && arguments.length === 2) {\n val = obj[key];\n }\n\n var childOb = !shallow && observe(val);\n Object.defineProperty(obj, key, {\n enumerable: true,\n configurable: true,\n get: function reactiveGetter () {\n var value = getter ? getter.call(obj) : val;\n if (Dep.target) {\n dep.depend();\n if (childOb) {\n childOb.dep.depend();\n if (Array.isArray(value)) {\n dependArray(value);\n }\n }\n }\n return value\n },\n set: function reactiveSetter (newVal) {\n var value = getter ? getter.call(obj) : val;\n /* eslint-disable no-self-compare */\n if (newVal === value || (newVal !== newVal && value !== value)) {\n return\n }\n /* eslint-enable no-self-compare */\n if (process.env.NODE_ENV !== 'production' && customSetter) {\n customSetter();\n }\n // #7981: for accessor properties without setter\n if (getter && !setter) { return }\n if (setter) {\n setter.call(obj, newVal);\n } else {\n val = newVal;\n }\n childOb = !shallow && observe(newVal);\n dep.notify();\n }\n });\n}\n\n/**\n * Set a property on an object. Adds the new property and\n * triggers change notification if the property doesn't\n * already exist.\n */\nfunction set (target, key, val) {\n if (process.env.NODE_ENV !== 'production' &&\n (isUndef(target) || isPrimitive(target))\n ) {\n warn((\"Cannot set reactive property on undefined, null, or primitive value: \" + ((target))));\n }\n if (Array.isArray(target) && isValidArrayIndex(key)) {\n target.length = Math.max(target.length, key);\n target.splice(key, 1, val);\n return val\n }\n if (key in target && !(key in Object.prototype)) {\n target[key] = val;\n return val\n }\n var ob = (target).__ob__;\n if (target._isVue || (ob && ob.vmCount)) {\n process.env.NODE_ENV !== 'production' && warn(\n 'Avoid adding reactive properties to a Vue instance or its root $data ' +\n 'at runtime - declare it upfront in the data option.'\n );\n return val\n }\n if (!ob) {\n target[key] = val;\n return val\n }\n defineReactive$$1(ob.value, key, val);\n ob.dep.notify();\n return val\n}\n\n/**\n * Delete a property and trigger change if necessary.\n */\nfunction del (target, key) {\n if (process.env.NODE_ENV !== 'production' &&\n (isUndef(target) || isPrimitive(target))\n ) {\n warn((\"Cannot delete reactive property on undefined, null, or primitive value: \" + ((target))));\n }\n if (Array.isArray(target) && isValidArrayIndex(key)) {\n target.splice(key, 1);\n return\n }\n var ob = (target).__ob__;\n if (target._isVue || (ob && ob.vmCount)) {\n process.env.NODE_ENV !== 'production' && warn(\n 'Avoid deleting properties on a Vue instance or its root $data ' +\n '- just set it to null.'\n );\n return\n }\n if (!hasOwn(target, key)) {\n return\n }\n delete target[key];\n if (!ob) {\n return\n }\n ob.dep.notify();\n}\n\n/**\n * Collect dependencies on array elements when the array is touched, since\n * we cannot intercept array element access like property getters.\n */\nfunction dependArray (value) {\n for (var e = (void 0), i = 0, l = value.length; i < l; i++) {\n e = value[i];\n e && e.__ob__ && e.__ob__.dep.depend();\n if (Array.isArray(e)) {\n dependArray(e);\n }\n }\n}\n\n/* */\n\n/**\n * Option overwriting strategies are functions that handle\n * how to merge a parent option value and a child option\n * value into the final value.\n */\nvar strats = config.optionMergeStrategies;\n\n/**\n * Options with restrictions\n */\nif (process.env.NODE_ENV !== 'production') {\n strats.el = strats.propsData = function (parent, child, vm, key) {\n if (!vm) {\n warn(\n \"option \\\"\" + key + \"\\\" can only be used during instance \" +\n 'creation with the `new` keyword.'\n );\n }\n return defaultStrat(parent, child)\n };\n}\n\n/**\n * Helper that recursively merges two data objects together.\n */\nfunction mergeData (to, from) {\n if (!from) { return to }\n var key, toVal, fromVal;\n\n var keys = hasSymbol\n ? Reflect.ownKeys(from)\n : Object.keys(from);\n\n for (var i = 0; i < keys.length; i++) {\n key = keys[i];\n // in case the object is already observed...\n if (key === '__ob__') { continue }\n toVal = to[key];\n fromVal = from[key];\n if (!hasOwn(to, key)) {\n set(to, key, fromVal);\n } else if (\n toVal !== fromVal &&\n isPlainObject(toVal) &&\n isPlainObject(fromVal)\n ) {\n mergeData(toVal, fromVal);\n }\n }\n return to\n}\n\n/**\n * Data\n */\nfunction mergeDataOrFn (\n parentVal,\n childVal,\n vm\n) {\n if (!vm) {\n // in a Vue.extend merge, both should be functions\n if (!childVal) {\n return parentVal\n }\n if (!parentVal) {\n return childVal\n }\n // when parentVal & childVal are both present,\n // we need to return a function that returns the\n // merged result of both functions... no need to\n // check if parentVal is a function here because\n // it has to be a function to pass previous merges.\n return function mergedDataFn () {\n return mergeData(\n typeof childVal === 'function' ? childVal.call(this, this) : childVal,\n typeof parentVal === 'function' ? parentVal.call(this, this) : parentVal\n )\n }\n } else {\n return function mergedInstanceDataFn () {\n // instance merge\n var instanceData = typeof childVal === 'function'\n ? childVal.call(vm, vm)\n : childVal;\n var defaultData = typeof parentVal === 'function'\n ? parentVal.call(vm, vm)\n : parentVal;\n if (instanceData) {\n return mergeData(instanceData, defaultData)\n } else {\n return defaultData\n }\n }\n }\n}\n\nstrats.data = function (\n parentVal,\n childVal,\n vm\n) {\n if (!vm) {\n if (childVal && typeof childVal !== 'function') {\n process.env.NODE_ENV !== 'production' && warn(\n 'The \"data\" option should be a function ' +\n 'that returns a per-instance value in component ' +\n 'definitions.',\n vm\n );\n\n return parentVal\n }\n return mergeDataOrFn(parentVal, childVal)\n }\n\n return mergeDataOrFn(parentVal, childVal, vm)\n};\n\n/**\n * Hooks and props are merged as arrays.\n */\nfunction mergeHook (\n parentVal,\n childVal\n) {\n var res = childVal\n ? parentVal\n ? parentVal.concat(childVal)\n : Array.isArray(childVal)\n ? childVal\n : [childVal]\n : parentVal;\n return res\n ? dedupeHooks(res)\n : res\n}\n\nfunction dedupeHooks (hooks) {\n var res = [];\n for (var i = 0; i < hooks.length; i++) {\n if (res.indexOf(hooks[i]) === -1) {\n res.push(hooks[i]);\n }\n }\n return res\n}\n\nLIFECYCLE_HOOKS.forEach(function (hook) {\n strats[hook] = mergeHook;\n});\n\n/**\n * Assets\n *\n * When a vm is present (instance creation), we need to do\n * a three-way merge between constructor options, instance\n * options and parent options.\n */\nfunction mergeAssets (\n parentVal,\n childVal,\n vm,\n key\n) {\n var res = Object.create(parentVal || null);\n if (childVal) {\n process.env.NODE_ENV !== 'production' && assertObjectType(key, childVal, vm);\n return extend(res, childVal)\n } else {\n return res\n }\n}\n\nASSET_TYPES.forEach(function (type) {\n strats[type + 's'] = mergeAssets;\n});\n\n/**\n * Watchers.\n *\n * Watchers hashes should not overwrite one\n * another, so we merge them as arrays.\n */\nstrats.watch = function (\n parentVal,\n childVal,\n vm,\n key\n) {\n // work around Firefox's Object.prototype.watch...\n if (parentVal === nativeWatch) { parentVal = undefined; }\n if (childVal === nativeWatch) { childVal = undefined; }\n /* istanbul ignore if */\n if (!childVal) { return Object.create(parentVal || null) }\n if (process.env.NODE_ENV !== 'production') {\n assertObjectType(key, childVal, vm);\n }\n if (!parentVal) { return childVal }\n var ret = {};\n extend(ret, parentVal);\n for (var key$1 in childVal) {\n var parent = ret[key$1];\n var child = childVal[key$1];\n if (parent && !Array.isArray(parent)) {\n parent = [parent];\n }\n ret[key$1] = parent\n ? parent.concat(child)\n : Array.isArray(child) ? child : [child];\n }\n return ret\n};\n\n/**\n * Other object hashes.\n */\nstrats.props =\nstrats.methods =\nstrats.inject =\nstrats.computed = function (\n parentVal,\n childVal,\n vm,\n key\n) {\n if (childVal && process.env.NODE_ENV !== 'production') {\n assertObjectType(key, childVal, vm);\n }\n if (!parentVal) { return childVal }\n var ret = Object.create(null);\n extend(ret, parentVal);\n if (childVal) { extend(ret, childVal); }\n return ret\n};\nstrats.provide = mergeDataOrFn;\n\n/**\n * Default strategy.\n */\nvar defaultStrat = function (parentVal, childVal) {\n return childVal === undefined\n ? parentVal\n : childVal\n};\n\n/**\n * Validate component names\n */\nfunction checkComponents (options) {\n for (var key in options.components) {\n validateComponentName(key);\n }\n}\n\nfunction validateComponentName (name) {\n if (!new RegExp((\"^[a-zA-Z][\\\\-\\\\.0-9_\" + (unicodeRegExp.source) + \"]*$\")).test(name)) {\n warn(\n 'Invalid component name: \"' + name + '\". Component names ' +\n 'should conform to valid custom element name in html5 specification.'\n );\n }\n if (isBuiltInTag(name) || config.isReservedTag(name)) {\n warn(\n 'Do not use built-in or reserved HTML elements as component ' +\n 'id: ' + name\n );\n }\n}\n\n/**\n * Ensure all props option syntax are normalized into the\n * Object-based format.\n */\nfunction normalizeProps (options, vm) {\n var props = options.props;\n if (!props) { return }\n var res = {};\n var i, val, name;\n if (Array.isArray(props)) {\n i = props.length;\n while (i--) {\n val = props[i];\n if (typeof val === 'string') {\n name = camelize(val);\n res[name] = { type: null };\n } else if (process.env.NODE_ENV !== 'production') {\n warn('props must be strings when using array syntax.');\n }\n }\n } else if (isPlainObject(props)) {\n for (var key in props) {\n val = props[key];\n name = camelize(key);\n res[name] = isPlainObject(val)\n ? val\n : { type: val };\n }\n } else if (process.env.NODE_ENV !== 'production') {\n warn(\n \"Invalid value for option \\\"props\\\": expected an Array or an Object, \" +\n \"but got \" + (toRawType(props)) + \".\",\n vm\n );\n }\n options.props = res;\n}\n\n/**\n * Normalize all injections into Object-based format\n */\nfunction normalizeInject (options, vm) {\n var inject = options.inject;\n if (!inject) { return }\n var normalized = options.inject = {};\n if (Array.isArray(inject)) {\n for (var i = 0; i < inject.length; i++) {\n normalized[inject[i]] = { from: inject[i] };\n }\n } else if (isPlainObject(inject)) {\n for (var key in inject) {\n var val = inject[key];\n normalized[key] = isPlainObject(val)\n ? extend({ from: key }, val)\n : { from: val };\n }\n } else if (process.env.NODE_ENV !== 'production') {\n warn(\n \"Invalid value for option \\\"inject\\\": expected an Array or an Object, \" +\n \"but got \" + (toRawType(inject)) + \".\",\n vm\n );\n }\n}\n\n/**\n * Normalize raw function directives into object format.\n */\nfunction normalizeDirectives (options) {\n var dirs = options.directives;\n if (dirs) {\n for (var key in dirs) {\n var def$$1 = dirs[key];\n if (typeof def$$1 === 'function') {\n dirs[key] = { bind: def$$1, update: def$$1 };\n }\n }\n }\n}\n\nfunction assertObjectType (name, value, vm) {\n if (!isPlainObject(value)) {\n warn(\n \"Invalid value for option \\\"\" + name + \"\\\": expected an Object, \" +\n \"but got \" + (toRawType(value)) + \".\",\n vm\n );\n }\n}\n\n/**\n * Merge two option objects into a new one.\n * Core utility used in both instantiation and inheritance.\n */\nfunction mergeOptions (\n parent,\n child,\n vm\n) {\n if (process.env.NODE_ENV !== 'production') {\n checkComponents(child);\n }\n\n if (typeof child === 'function') {\n child = child.options;\n }\n\n normalizeProps(child, vm);\n normalizeInject(child, vm);\n normalizeDirectives(child);\n\n // Apply extends and mixins on the child options,\n // but only if it is a raw options object that isn't\n // the result of another mergeOptions call.\n // Only merged options has the _base property.\n if (!child._base) {\n if (child.extends) {\n parent = mergeOptions(parent, child.extends, vm);\n }\n if (child.mixins) {\n for (var i = 0, l = child.mixins.length; i < l; i++) {\n parent = mergeOptions(parent, child.mixins[i], vm);\n }\n }\n }\n\n var options = {};\n var key;\n for (key in parent) {\n mergeField(key);\n }\n for (key in child) {\n if (!hasOwn(parent, key)) {\n mergeField(key);\n }\n }\n function mergeField (key) {\n var strat = strats[key] || defaultStrat;\n options[key] = strat(parent[key], child[key], vm, key);\n }\n return options\n}\n\n/**\n * Resolve an asset.\n * This function is used because child instances need access\n * to assets defined in its ancestor chain.\n */\nfunction resolveAsset (\n options,\n type,\n id,\n warnMissing\n) {\n /* istanbul ignore if */\n if (typeof id !== 'string') {\n return\n }\n var assets = options[type];\n // check local registration variations first\n if (hasOwn(assets, id)) { return assets[id] }\n var camelizedId = camelize(id);\n if (hasOwn(assets, camelizedId)) { return assets[camelizedId] }\n var PascalCaseId = capitalize(camelizedId);\n if (hasOwn(assets, PascalCaseId)) { return assets[PascalCaseId] }\n // fallback to prototype chain\n var res = assets[id] || assets[camelizedId] || assets[PascalCaseId];\n if (process.env.NODE_ENV !== 'production' && warnMissing && !res) {\n warn(\n 'Failed to resolve ' + type.slice(0, -1) + ': ' + id,\n options\n );\n }\n return res\n}\n\n/* */\n\n\n\nfunction validateProp (\n key,\n propOptions,\n propsData,\n vm\n) {\n var prop = propOptions[key];\n var absent = !hasOwn(propsData, key);\n var value = propsData[key];\n // boolean casting\n var booleanIndex = getTypeIndex(Boolean, prop.type);\n if (booleanIndex > -1) {\n if (absent && !hasOwn(prop, 'default')) {\n value = false;\n } else if (value === '' || value === hyphenate(key)) {\n // only cast empty string / same name to boolean if\n // boolean has higher priority\n var stringIndex = getTypeIndex(String, prop.type);\n if (stringIndex < 0 || booleanIndex < stringIndex) {\n value = true;\n }\n }\n }\n // check default value\n if (value === undefined) {\n value = getPropDefaultValue(vm, prop, key);\n // since the default value is a fresh copy,\n // make sure to observe it.\n var prevShouldObserve = shouldObserve;\n toggleObserving(true);\n observe(value);\n toggleObserving(prevShouldObserve);\n }\n if (\n process.env.NODE_ENV !== 'production' &&\n // skip validation for weex recycle-list child component props\n !(false)\n ) {\n assertProp(prop, key, value, vm, absent);\n }\n return value\n}\n\n/**\n * Get the default value of a prop.\n */\nfunction getPropDefaultValue (vm, prop, key) {\n // no default, return undefined\n if (!hasOwn(prop, 'default')) {\n return undefined\n }\n var def = prop.default;\n // warn against non-factory defaults for Object & Array\n if (process.env.NODE_ENV !== 'production' && isObject(def)) {\n warn(\n 'Invalid default value for prop \"' + key + '\": ' +\n 'Props with type Object/Array must use a factory function ' +\n 'to return the default value.',\n vm\n );\n }\n // the raw prop value was also undefined from previous render,\n // return previous default value to avoid unnecessary watcher trigger\n if (vm && vm.$options.propsData &&\n vm.$options.propsData[key] === undefined &&\n vm._props[key] !== undefined\n ) {\n return vm._props[key]\n }\n // call factory function for non-Function types\n // a value is Function if its prototype is function even across different execution context\n return typeof def === 'function' && getType(prop.type) !== 'Function'\n ? def.call(vm)\n : def\n}\n\n/**\n * Assert whether a prop is valid.\n */\nfunction assertProp (\n prop,\n name,\n value,\n vm,\n absent\n) {\n if (prop.required && absent) {\n warn(\n 'Missing required prop: \"' + name + '\"',\n vm\n );\n return\n }\n if (value == null && !prop.required) {\n return\n }\n var type = prop.type;\n var valid = !type || type === true;\n var expectedTypes = [];\n if (type) {\n if (!Array.isArray(type)) {\n type = [type];\n }\n for (var i = 0; i < type.length && !valid; i++) {\n var assertedType = assertType(value, type[i], vm);\n expectedTypes.push(assertedType.expectedType || '');\n valid = assertedType.valid;\n }\n }\n\n var haveExpectedTypes = expectedTypes.some(function (t) { return t; });\n if (!valid && haveExpectedTypes) {\n warn(\n getInvalidTypeMessage(name, value, expectedTypes),\n vm\n );\n return\n }\n var validator = prop.validator;\n if (validator) {\n if (!validator(value)) {\n warn(\n 'Invalid prop: custom validator check failed for prop \"' + name + '\".',\n vm\n );\n }\n }\n}\n\nvar simpleCheckRE = /^(String|Number|Boolean|Function|Symbol|BigInt)$/;\n\nfunction assertType (value, type, vm) {\n var valid;\n var expectedType = getType(type);\n if (simpleCheckRE.test(expectedType)) {\n var t = typeof value;\n valid = t === expectedType.toLowerCase();\n // for primitive wrapper objects\n if (!valid && t === 'object') {\n valid = value instanceof type;\n }\n } else if (expectedType === 'Object') {\n valid = isPlainObject(value);\n } else if (expectedType === 'Array') {\n valid = Array.isArray(value);\n } else {\n try {\n valid = value instanceof type;\n } catch (e) {\n warn('Invalid prop type: \"' + String(type) + '\" is not a constructor', vm);\n valid = false;\n }\n }\n return {\n valid: valid,\n expectedType: expectedType\n }\n}\n\nvar functionTypeCheckRE = /^\\s*function (\\w+)/;\n\n/**\n * Use function string name to check built-in types,\n * because a simple equality check will fail when running\n * across different vms / iframes.\n */\nfunction getType (fn) {\n var match = fn && fn.toString().match(functionTypeCheckRE);\n return match ? match[1] : ''\n}\n\nfunction isSameType (a, b) {\n return getType(a) === getType(b)\n}\n\nfunction getTypeIndex (type, expectedTypes) {\n if (!Array.isArray(expectedTypes)) {\n return isSameType(expectedTypes, type) ? 0 : -1\n }\n for (var i = 0, len = expectedTypes.length; i < len; i++) {\n if (isSameType(expectedTypes[i], type)) {\n return i\n }\n }\n return -1\n}\n\nfunction getInvalidTypeMessage (name, value, expectedTypes) {\n var message = \"Invalid prop: type check failed for prop \\\"\" + name + \"\\\".\" +\n \" Expected \" + (expectedTypes.map(capitalize).join(', '));\n var expectedType = expectedTypes[0];\n var receivedType = toRawType(value);\n // check if we need to specify expected value\n if (\n expectedTypes.length === 1 &&\n isExplicable(expectedType) &&\n isExplicable(typeof value) &&\n !isBoolean(expectedType, receivedType)\n ) {\n message += \" with value \" + (styleValue(value, expectedType));\n }\n message += \", got \" + receivedType + \" \";\n // check if we need to specify received value\n if (isExplicable(receivedType)) {\n message += \"with value \" + (styleValue(value, receivedType)) + \".\";\n }\n return message\n}\n\nfunction styleValue (value, type) {\n if (type === 'String') {\n return (\"\\\"\" + value + \"\\\"\")\n } else if (type === 'Number') {\n return (\"\" + (Number(value)))\n } else {\n return (\"\" + value)\n }\n}\n\nvar EXPLICABLE_TYPES = ['string', 'number', 'boolean'];\nfunction isExplicable (value) {\n return EXPLICABLE_TYPES.some(function (elem) { return value.toLowerCase() === elem; })\n}\n\nfunction isBoolean () {\n var args = [], len = arguments.length;\n while ( len-- ) args[ len ] = arguments[ len ];\n\n return args.some(function (elem) { return elem.toLowerCase() === 'boolean'; })\n}\n\n/* */\n\nfunction handleError (err, vm, info) {\n // Deactivate deps tracking while processing error handler to avoid possible infinite rendering.\n // See: https://github.com/vuejs/vuex/issues/1505\n pushTarget();\n try {\n if (vm) {\n var cur = vm;\n while ((cur = cur.$parent)) {\n var hooks = cur.$options.errorCaptured;\n if (hooks) {\n for (var i = 0; i < hooks.length; i++) {\n try {\n var capture = hooks[i].call(cur, err, vm, info) === false;\n if (capture) { return }\n } catch (e) {\n globalHandleError(e, cur, 'errorCaptured hook');\n }\n }\n }\n }\n }\n globalHandleError(err, vm, info);\n } finally {\n popTarget();\n }\n}\n\nfunction invokeWithErrorHandling (\n handler,\n context,\n args,\n vm,\n info\n) {\n var res;\n try {\n res = args ? handler.apply(context, args) : handler.call(context);\n if (res && !res._isVue && isPromise(res) && !res._handled) {\n res.catch(function (e) { return handleError(e, vm, info + \" (Promise/async)\"); });\n // issue #9511\n // avoid catch triggering multiple times when nested calls\n res._handled = true;\n }\n } catch (e) {\n handleError(e, vm, info);\n }\n return res\n}\n\nfunction globalHandleError (err, vm, info) {\n if (config.errorHandler) {\n try {\n return config.errorHandler.call(null, err, vm, info)\n } catch (e) {\n // if the user intentionally throws the original error in the handler,\n // do not log it twice\n if (e !== err) {\n logError(e, null, 'config.errorHandler');\n }\n }\n }\n logError(err, vm, info);\n}\n\nfunction logError (err, vm, info) {\n if (process.env.NODE_ENV !== 'production') {\n warn((\"Error in \" + info + \": \\\"\" + (err.toString()) + \"\\\"\"), vm);\n }\n /* istanbul ignore else */\n if ((inBrowser || inWeex) && typeof console !== 'undefined') {\n console.error(err);\n } else {\n throw err\n }\n}\n\n/* */\n\nvar isUsingMicroTask = false;\n\nvar callbacks = [];\nvar pending = false;\n\nfunction flushCallbacks () {\n pending = false;\n var copies = callbacks.slice(0);\n callbacks.length = 0;\n for (var i = 0; i < copies.length; i++) {\n copies[i]();\n }\n}\n\n// Here we have async deferring wrappers using microtasks.\n// In 2.5 we used (macro) tasks (in combination with microtasks).\n// However, it has subtle problems when state is changed right before repaint\n// (e.g. #6813, out-in transitions).\n// Also, using (macro) tasks in event handler would cause some weird behaviors\n// that cannot be circumvented (e.g. #7109, #7153, #7546, #7834, #8109).\n// So we now use microtasks everywhere, again.\n// A major drawback of this tradeoff is that there are some scenarios\n// where microtasks have too high a priority and fire in between supposedly\n// sequential events (e.g. #4521, #6690, which have workarounds)\n// or even between bubbling of the same event (#6566).\nvar timerFunc;\n\n// The nextTick behavior leverages the microtask queue, which can be accessed\n// via either native Promise.then or MutationObserver.\n// MutationObserver has wider support, however it is seriously bugged in\n// UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It\n// completely stops working after triggering a few times... so, if native\n// Promise is available, we will use it:\n/* istanbul ignore next, $flow-disable-line */\nif (typeof Promise !== 'undefined' && isNative(Promise)) {\n var p = Promise.resolve();\n timerFunc = function () {\n p.then(flushCallbacks);\n // In problematic UIWebViews, Promise.then doesn't completely break, but\n // it can get stuck in a weird state where callbacks are pushed into the\n // microtask queue but the queue isn't being flushed, until the browser\n // needs to do some other work, e.g. handle a timer. Therefore we can\n // \"force\" the microtask queue to be flushed by adding an empty timer.\n if (isIOS) { setTimeout(noop); }\n };\n isUsingMicroTask = true;\n} else if (!isIE && typeof MutationObserver !== 'undefined' && (\n isNative(MutationObserver) ||\n // PhantomJS and iOS 7.x\n MutationObserver.toString() === '[object MutationObserverConstructor]'\n)) {\n // Use MutationObserver where native Promise is not available,\n // e.g. PhantomJS, iOS7, Android 4.4\n // (#6466 MutationObserver is unreliable in IE11)\n var counter = 1;\n var observer = new MutationObserver(flushCallbacks);\n var textNode = document.createTextNode(String(counter));\n observer.observe(textNode, {\n characterData: true\n });\n timerFunc = function () {\n counter = (counter + 1) % 2;\n textNode.data = String(counter);\n };\n isUsingMicroTask = true;\n} else if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) {\n // Fallback to setImmediate.\n // Technically it leverages the (macro) task queue,\n // but it is still a better choice than setTimeout.\n timerFunc = function () {\n setImmediate(flushCallbacks);\n };\n} else {\n // Fallback to setTimeout.\n timerFunc = function () {\n setTimeout(flushCallbacks, 0);\n };\n}\n\nfunction nextTick (cb, ctx) {\n var _resolve;\n callbacks.push(function () {\n if (cb) {\n try {\n cb.call(ctx);\n } catch (e) {\n handleError(e, ctx, 'nextTick');\n }\n } else if (_resolve) {\n _resolve(ctx);\n }\n });\n if (!pending) {\n pending = true;\n timerFunc();\n }\n // $flow-disable-line\n if (!cb && typeof Promise !== 'undefined') {\n return new Promise(function (resolve) {\n _resolve = resolve;\n })\n }\n}\n\n/* */\n\n/* not type checking this file because flow doesn't play well with Proxy */\n\nvar initProxy;\n\nif (process.env.NODE_ENV !== 'production') {\n var allowedGlobals = makeMap(\n 'Infinity,undefined,NaN,isFinite,isNaN,' +\n 'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' +\n 'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,BigInt,' +\n 'require' // for Webpack/Browserify\n );\n\n var warnNonPresent = function (target, key) {\n warn(\n \"Property or method \\\"\" + key + \"\\\" is not defined on the instance but \" +\n 'referenced during render. Make sure that this property is reactive, ' +\n 'either in the data option, or for class-based components, by ' +\n 'initializing the property. ' +\n 'See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.',\n target\n );\n };\n\n var warnReservedPrefix = function (target, key) {\n warn(\n \"Property \\\"\" + key + \"\\\" must be accessed with \\\"$data.\" + key + \"\\\" because \" +\n 'properties starting with \"$\" or \"_\" are not proxied in the Vue instance to ' +\n 'prevent conflicts with Vue internals. ' +\n 'See: https://vuejs.org/v2/api/#data',\n target\n );\n };\n\n var hasProxy =\n typeof Proxy !== 'undefined' && isNative(Proxy);\n\n if (hasProxy) {\n var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta,exact');\n config.keyCodes = new Proxy(config.keyCodes, {\n set: function set (target, key, value) {\n if (isBuiltInModifier(key)) {\n warn((\"Avoid overwriting built-in modifier in config.keyCodes: .\" + key));\n return false\n } else {\n target[key] = value;\n return true\n }\n }\n });\n }\n\n var hasHandler = {\n has: function has (target, key) {\n var has = key in target;\n var isAllowed = allowedGlobals(key) ||\n (typeof key === 'string' && key.charAt(0) === '_' && !(key in target.$data));\n if (!has && !isAllowed) {\n if (key in target.$data) { warnReservedPrefix(target, key); }\n else { warnNonPresent(target, key); }\n }\n return has || !isAllowed\n }\n };\n\n var getHandler = {\n get: function get (target, key) {\n if (typeof key === 'string' && !(key in target)) {\n if (key in target.$data) { warnReservedPrefix(target, key); }\n else { warnNonPresent(target, key); }\n }\n return target[key]\n }\n };\n\n initProxy = function initProxy (vm) {\n if (hasProxy) {\n // determine which proxy handler to use\n var options = vm.$options;\n var handlers = options.render && options.render._withStripped\n ? getHandler\n : hasHandler;\n vm._renderProxy = new Proxy(vm, handlers);\n } else {\n vm._renderProxy = vm;\n }\n };\n}\n\n/* */\n\nvar seenObjects = new _Set();\n\n/**\n * Recursively traverse an object to evoke all converted\n * getters, so that every nested property inside the object\n * is collected as a \"deep\" dependency.\n */\nfunction traverse (val) {\n _traverse(val, seenObjects);\n seenObjects.clear();\n}\n\nfunction _traverse (val, seen) {\n var i, keys;\n var isA = Array.isArray(val);\n if ((!isA && !isObject(val)) || Object.isFrozen(val) || val instanceof VNode) {\n return\n }\n if (val.__ob__) {\n var depId = val.__ob__.dep.id;\n if (seen.has(depId)) {\n return\n }\n seen.add(depId);\n }\n if (isA) {\n i = val.length;\n while (i--) { _traverse(val[i], seen); }\n } else {\n keys = Object.keys(val);\n i = keys.length;\n while (i--) { _traverse(val[keys[i]], seen); }\n }\n}\n\nvar mark;\nvar measure;\n\nif (process.env.NODE_ENV !== 'production') {\n var perf = inBrowser && window.performance;\n /* istanbul ignore if */\n if (\n perf &&\n perf.mark &&\n perf.measure &&\n perf.clearMarks &&\n perf.clearMeasures\n ) {\n mark = function (tag) { return perf.mark(tag); };\n measure = function (name, startTag, endTag) {\n perf.measure(name, startTag, endTag);\n perf.clearMarks(startTag);\n perf.clearMarks(endTag);\n // perf.clearMeasures(name)\n };\n }\n}\n\n/* */\n\nvar normalizeEvent = cached(function (name) {\n var passive = name.charAt(0) === '&';\n name = passive ? name.slice(1) : name;\n var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first\n name = once$$1 ? name.slice(1) : name;\n var capture = name.charAt(0) === '!';\n name = capture ? name.slice(1) : name;\n return {\n name: name,\n once: once$$1,\n capture: capture,\n passive: passive\n }\n});\n\nfunction createFnInvoker (fns, vm) {\n function invoker () {\n var arguments$1 = arguments;\n\n var fns = invoker.fns;\n if (Array.isArray(fns)) {\n var cloned = fns.slice();\n for (var i = 0; i < cloned.length; i++) {\n invokeWithErrorHandling(cloned[i], null, arguments$1, vm, \"v-on handler\");\n }\n } else {\n // return handler return value for single handlers\n return invokeWithErrorHandling(fns, null, arguments, vm, \"v-on handler\")\n }\n }\n invoker.fns = fns;\n return invoker\n}\n\nfunction updateListeners (\n on,\n oldOn,\n add,\n remove$$1,\n createOnceHandler,\n vm\n) {\n var name, def$$1, cur, old, event;\n for (name in on) {\n def$$1 = cur = on[name];\n old = oldOn[name];\n event = normalizeEvent(name);\n if (isUndef(cur)) {\n process.env.NODE_ENV !== 'production' && warn(\n \"Invalid handler for event \\\"\" + (event.name) + \"\\\": got \" + String(cur),\n vm\n );\n } else if (isUndef(old)) {\n if (isUndef(cur.fns)) {\n cur = on[name] = createFnInvoker(cur, vm);\n }\n if (isTrue(event.once)) {\n cur = on[name] = createOnceHandler(event.name, cur, event.capture);\n }\n add(event.name, cur, event.capture, event.passive, event.params);\n } else if (cur !== old) {\n old.fns = cur;\n on[name] = old;\n }\n }\n for (name in oldOn) {\n if (isUndef(on[name])) {\n event = normalizeEvent(name);\n remove$$1(event.name, oldOn[name], event.capture);\n }\n }\n}\n\n/* */\n\nfunction mergeVNodeHook (def, hookKey, hook) {\n if (def instanceof VNode) {\n def = def.data.hook || (def.data.hook = {});\n }\n var invoker;\n var oldHook = def[hookKey];\n\n function wrappedHook () {\n hook.apply(this, arguments);\n // important: remove merged hook to ensure it's called only once\n // and prevent memory leak\n remove(invoker.fns, wrappedHook);\n }\n\n if (isUndef(oldHook)) {\n // no existing hook\n invoker = createFnInvoker([wrappedHook]);\n } else {\n /* istanbul ignore if */\n if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {\n // already a merged invoker\n invoker = oldHook;\n invoker.fns.push(wrappedHook);\n } else {\n // existing plain hook\n invoker = createFnInvoker([oldHook, wrappedHook]);\n }\n }\n\n invoker.merged = true;\n def[hookKey] = invoker;\n}\n\n/* */\n\nfunction extractPropsFromVNodeData (\n data,\n Ctor,\n tag\n) {\n // we are only extracting raw values here.\n // validation and default values are handled in the child\n // component itself.\n var propOptions = Ctor.options.props;\n if (isUndef(propOptions)) {\n return\n }\n var res = {};\n var attrs = data.attrs;\n var props = data.props;\n if (isDef(attrs) || isDef(props)) {\n for (var key in propOptions) {\n var altKey = hyphenate(key);\n if (process.env.NODE_ENV !== 'production') {\n var keyInLowerCase = key.toLowerCase();\n if (\n key !== keyInLowerCase &&\n attrs && hasOwn(attrs, keyInLowerCase)\n ) {\n tip(\n \"Prop \\\"\" + keyInLowerCase + \"\\\" is passed to component \" +\n (formatComponentName(tag || Ctor)) + \", but the declared prop name is\" +\n \" \\\"\" + key + \"\\\". \" +\n \"Note that HTML attributes are case-insensitive and camelCased \" +\n \"props need to use their kebab-case equivalents when using in-DOM \" +\n \"templates. You should probably use \\\"\" + altKey + \"\\\" instead of \\\"\" + key + \"\\\".\"\n );\n }\n }\n checkProp(res, props, key, altKey, true) ||\n checkProp(res, attrs, key, altKey, false);\n }\n }\n return res\n}\n\nfunction checkProp (\n res,\n hash,\n key,\n altKey,\n preserve\n) {\n if (isDef(hash)) {\n if (hasOwn(hash, key)) {\n res[key] = hash[key];\n if (!preserve) {\n delete hash[key];\n }\n return true\n } else if (hasOwn(hash, altKey)) {\n res[key] = hash[altKey];\n if (!preserve) {\n delete hash[altKey];\n }\n return true\n }\n }\n return false\n}\n\n/* */\n\n// The template compiler attempts to minimize the need for normalization by\n// statically analyzing the template at compile time.\n//\n// For plain HTML markup, normalization can be completely skipped because the\n// generated render function is guaranteed to return Array. There are\n// two cases where extra normalization is needed:\n\n// 1. When the children contains components - because a functional component\n// may return an Array instead of a single root. In this case, just a simple\n// normalization is needed - if any child is an Array, we flatten the whole\n// thing with Array.prototype.concat. It is guaranteed to be only 1-level deep\n// because functional components already normalize their own children.\nfunction simpleNormalizeChildren (children) {\n for (var i = 0; i < children.length; i++) {\n if (Array.isArray(children[i])) {\n return Array.prototype.concat.apply([], children)\n }\n }\n return children\n}\n\n// 2. When the children contains constructs that always generated nested Arrays,\n// e.g. , , v-for, or when the children is provided by user\n// with hand-written render functions / JSX. In such cases a full normalization\n// is needed to cater to all possible types of children values.\nfunction normalizeChildren (children) {\n return isPrimitive(children)\n ? [createTextVNode(children)]\n : Array.isArray(children)\n ? normalizeArrayChildren(children)\n : undefined\n}\n\nfunction isTextNode (node) {\n return isDef(node) && isDef(node.text) && isFalse(node.isComment)\n}\n\nfunction normalizeArrayChildren (children, nestedIndex) {\n var res = [];\n var i, c, lastIndex, last;\n for (i = 0; i < children.length; i++) {\n c = children[i];\n if (isUndef(c) || typeof c === 'boolean') { continue }\n lastIndex = res.length - 1;\n last = res[lastIndex];\n // nested\n if (Array.isArray(c)) {\n if (c.length > 0) {\n c = normalizeArrayChildren(c, ((nestedIndex || '') + \"_\" + i));\n // merge adjacent text nodes\n if (isTextNode(c[0]) && isTextNode(last)) {\n res[lastIndex] = createTextVNode(last.text + (c[0]).text);\n c.shift();\n }\n res.push.apply(res, c);\n }\n } else if (isPrimitive(c)) {\n if (isTextNode(last)) {\n // merge adjacent text nodes\n // this is necessary for SSR hydration because text nodes are\n // essentially merged when rendered to HTML strings\n res[lastIndex] = createTextVNode(last.text + c);\n } else if (c !== '') {\n // convert primitive to vnode\n res.push(createTextVNode(c));\n }\n } else {\n if (isTextNode(c) && isTextNode(last)) {\n // merge adjacent text nodes\n res[lastIndex] = createTextVNode(last.text + c.text);\n } else {\n // default key for nested array children (likely generated by v-for)\n if (isTrue(children._isVList) &&\n isDef(c.tag) &&\n isUndef(c.key) &&\n isDef(nestedIndex)) {\n c.key = \"__vlist\" + nestedIndex + \"_\" + i + \"__\";\n }\n res.push(c);\n }\n }\n }\n return res\n}\n\n/* */\n\nfunction initProvide (vm) {\n var provide = vm.$options.provide;\n if (provide) {\n vm._provided = typeof provide === 'function'\n ? provide.call(vm)\n : provide;\n }\n}\n\nfunction initInjections (vm) {\n var result = resolveInject(vm.$options.inject, vm);\n if (result) {\n toggleObserving(false);\n Object.keys(result).forEach(function (key) {\n /* istanbul ignore else */\n if (process.env.NODE_ENV !== 'production') {\n defineReactive$$1(vm, key, result[key], function () {\n warn(\n \"Avoid mutating an injected value directly since the changes will be \" +\n \"overwritten whenever the provided component re-renders. \" +\n \"injection being mutated: \\\"\" + key + \"\\\"\",\n vm\n );\n });\n } else {\n defineReactive$$1(vm, key, result[key]);\n }\n });\n toggleObserving(true);\n }\n}\n\nfunction resolveInject (inject, vm) {\n if (inject) {\n // inject is :any because flow is not smart enough to figure out cached\n var result = Object.create(null);\n var keys = hasSymbol\n ? Reflect.ownKeys(inject)\n : Object.keys(inject);\n\n for (var i = 0; i < keys.length; i++) {\n var key = keys[i];\n // #6574 in case the inject object is observed...\n if (key === '__ob__') { continue }\n var provideKey = inject[key].from;\n var source = vm;\n while (source) {\n if (source._provided && hasOwn(source._provided, provideKey)) {\n result[key] = source._provided[provideKey];\n break\n }\n source = source.$parent;\n }\n if (!source) {\n if ('default' in inject[key]) {\n var provideDefault = inject[key].default;\n result[key] = typeof provideDefault === 'function'\n ? provideDefault.call(vm)\n : provideDefault;\n } else if (process.env.NODE_ENV !== 'production') {\n warn((\"Injection \\\"\" + key + \"\\\" not found\"), vm);\n }\n }\n }\n return result\n }\n}\n\n/* */\n\n\n\n/**\n * Runtime helper for resolving raw children VNodes into a slot object.\n */\nfunction resolveSlots (\n children,\n context\n) {\n if (!children || !children.length) {\n return {}\n }\n var slots = {};\n for (var i = 0, l = children.length; i < l; i++) {\n var child = children[i];\n var data = child.data;\n // remove slot attribute if the node is resolved as a Vue slot node\n if (data && data.attrs && data.attrs.slot) {\n delete data.attrs.slot;\n }\n // named slots should only be respected if the vnode was rendered in the\n // same context.\n if ((child.context === context || child.fnContext === context) &&\n data && data.slot != null\n ) {\n var name = data.slot;\n var slot = (slots[name] || (slots[name] = []));\n if (child.tag === 'template') {\n slot.push.apply(slot, child.children || []);\n } else {\n slot.push(child);\n }\n } else {\n (slots.default || (slots.default = [])).push(child);\n }\n }\n // ignore slots that contains only whitespace\n for (var name$1 in slots) {\n if (slots[name$1].every(isWhitespace)) {\n delete slots[name$1];\n }\n }\n return slots\n}\n\nfunction isWhitespace (node) {\n return (node.isComment && !node.asyncFactory) || node.text === ' '\n}\n\n/* */\n\nfunction isAsyncPlaceholder (node) {\n return node.isComment && node.asyncFactory\n}\n\n/* */\n\nfunction normalizeScopedSlots (\n slots,\n normalSlots,\n prevSlots\n) {\n var res;\n var hasNormalSlots = Object.keys(normalSlots).length > 0;\n var isStable = slots ? !!slots.$stable : !hasNormalSlots;\n var key = slots && slots.$key;\n if (!slots) {\n res = {};\n } else if (slots._normalized) {\n // fast path 1: child component re-render only, parent did not change\n return slots._normalized\n } else if (\n isStable &&\n prevSlots &&\n prevSlots !== emptyObject &&\n key === prevSlots.$key &&\n !hasNormalSlots &&\n !prevSlots.$hasNormal\n ) {\n // fast path 2: stable scoped slots w/ no normal slots to proxy,\n // only need to normalize once\n return prevSlots\n } else {\n res = {};\n for (var key$1 in slots) {\n if (slots[key$1] && key$1[0] !== '$') {\n res[key$1] = normalizeScopedSlot(normalSlots, key$1, slots[key$1]);\n }\n }\n }\n // expose normal slots on scopedSlots\n for (var key$2 in normalSlots) {\n if (!(key$2 in res)) {\n res[key$2] = proxyNormalSlot(normalSlots, key$2);\n }\n }\n // avoriaz seems to mock a non-extensible $scopedSlots object\n // and when that is passed down this would cause an error\n if (slots && Object.isExtensible(slots)) {\n (slots)._normalized = res;\n }\n def(res, '$stable', isStable);\n def(res, '$key', key);\n def(res, '$hasNormal', hasNormalSlots);\n return res\n}\n\nfunction normalizeScopedSlot(normalSlots, key, fn) {\n var normalized = function () {\n var res = arguments.length ? fn.apply(null, arguments) : fn({});\n res = res && typeof res === 'object' && !Array.isArray(res)\n ? [res] // single vnode\n : normalizeChildren(res);\n var vnode = res && res[0];\n return res && (\n !vnode ||\n (res.length === 1 && vnode.isComment && !isAsyncPlaceholder(vnode)) // #9658, #10391\n ) ? undefined\n : res\n };\n // this is a slot using the new v-slot syntax without scope. although it is\n // compiled as a scoped slot, render fn users would expect it to be present\n // on this.$slots because the usage is semantically a normal slot.\n if (fn.proxy) {\n Object.defineProperty(normalSlots, key, {\n get: normalized,\n enumerable: true,\n configurable: true\n });\n }\n return normalized\n}\n\nfunction proxyNormalSlot(slots, key) {\n return function () { return slots[key]; }\n}\n\n/* */\n\n/**\n * Runtime helper for rendering v-for lists.\n */\nfunction renderList (\n val,\n render\n) {\n var ret, i, l, keys, key;\n if (Array.isArray(val) || typeof val === 'string') {\n ret = new Array(val.length);\n for (i = 0, l = val.length; i < l; i++) {\n ret[i] = render(val[i], i);\n }\n } else if (typeof val === 'number') {\n ret = new Array(val);\n for (i = 0; i < val; i++) {\n ret[i] = render(i + 1, i);\n }\n } else if (isObject(val)) {\n if (hasSymbol && val[Symbol.iterator]) {\n ret = [];\n var iterator = val[Symbol.iterator]();\n var result = iterator.next();\n while (!result.done) {\n ret.push(render(result.value, ret.length));\n result = iterator.next();\n }\n } else {\n keys = Object.keys(val);\n ret = new Array(keys.length);\n for (i = 0, l = keys.length; i < l; i++) {\n key = keys[i];\n ret[i] = render(val[key], key, i);\n }\n }\n }\n if (!isDef(ret)) {\n ret = [];\n }\n (ret)._isVList = true;\n return ret\n}\n\n/* */\n\n/**\n * Runtime helper for rendering \n */\nfunction renderSlot (\n name,\n fallbackRender,\n props,\n bindObject\n) {\n var scopedSlotFn = this.$scopedSlots[name];\n var nodes;\n if (scopedSlotFn) {\n // scoped slot\n props = props || {};\n if (bindObject) {\n if (process.env.NODE_ENV !== 'production' && !isObject(bindObject)) {\n warn('slot v-bind without argument expects an Object', this);\n }\n props = extend(extend({}, bindObject), props);\n }\n nodes =\n scopedSlotFn(props) ||\n (typeof fallbackRender === 'function' ? fallbackRender() : fallbackRender);\n } else {\n nodes =\n this.$slots[name] ||\n (typeof fallbackRender === 'function' ? fallbackRender() : fallbackRender);\n }\n\n var target = props && props.slot;\n if (target) {\n return this.$createElement('template', { slot: target }, nodes)\n } else {\n return nodes\n }\n}\n\n/* */\n\n/**\n * Runtime helper for resolving filters\n */\nfunction resolveFilter (id) {\n return resolveAsset(this.$options, 'filters', id, true) || identity\n}\n\n/* */\n\nfunction isKeyNotMatch (expect, actual) {\n if (Array.isArray(expect)) {\n return expect.indexOf(actual) === -1\n } else {\n return expect !== actual\n }\n}\n\n/**\n * Runtime helper for checking keyCodes from config.\n * exposed as Vue.prototype._k\n * passing in eventKeyName as last argument separately for backwards compat\n */\nfunction checkKeyCodes (\n eventKeyCode,\n key,\n builtInKeyCode,\n eventKeyName,\n builtInKeyName\n) {\n var mappedKeyCode = config.keyCodes[key] || builtInKeyCode;\n if (builtInKeyName && eventKeyName && !config.keyCodes[key]) {\n return isKeyNotMatch(builtInKeyName, eventKeyName)\n } else if (mappedKeyCode) {\n return isKeyNotMatch(mappedKeyCode, eventKeyCode)\n } else if (eventKeyName) {\n return hyphenate(eventKeyName) !== key\n }\n return eventKeyCode === undefined\n}\n\n/* */\n\n/**\n * Runtime helper for merging v-bind=\"object\" into a VNode's data.\n */\nfunction bindObjectProps (\n data,\n tag,\n value,\n asProp,\n isSync\n) {\n if (value) {\n if (!isObject(value)) {\n process.env.NODE_ENV !== 'production' && warn(\n 'v-bind without argument expects an Object or Array value',\n this\n );\n } else {\n if (Array.isArray(value)) {\n value = toObject(value);\n }\n var hash;\n var loop = function ( key ) {\n if (\n key === 'class' ||\n key === 'style' ||\n isReservedAttribute(key)\n ) {\n hash = data;\n } else {\n var type = data.attrs && data.attrs.type;\n hash = asProp || config.mustUseProp(tag, type, key)\n ? data.domProps || (data.domProps = {})\n : data.attrs || (data.attrs = {});\n }\n var camelizedKey = camelize(key);\n var hyphenatedKey = hyphenate(key);\n if (!(camelizedKey in hash) && !(hyphenatedKey in hash)) {\n hash[key] = value[key];\n\n if (isSync) {\n var on = data.on || (data.on = {});\n on[(\"update:\" + key)] = function ($event) {\n value[key] = $event;\n };\n }\n }\n };\n\n for (var key in value) loop( key );\n }\n }\n return data\n}\n\n/* */\n\n/**\n * Runtime helper for rendering static trees.\n */\nfunction renderStatic (\n index,\n isInFor\n) {\n var cached = this._staticTrees || (this._staticTrees = []);\n var tree = cached[index];\n // if has already-rendered static tree and not inside v-for,\n // we can reuse the same tree.\n if (tree && !isInFor) {\n return tree\n }\n // otherwise, render a fresh tree.\n tree = cached[index] = this.$options.staticRenderFns[index].call(\n this._renderProxy,\n null,\n this // for render fns generated for functional component templates\n );\n markStatic(tree, (\"__static__\" + index), false);\n return tree\n}\n\n/**\n * Runtime helper for v-once.\n * Effectively it means marking the node as static with a unique key.\n */\nfunction markOnce (\n tree,\n index,\n key\n) {\n markStatic(tree, (\"__once__\" + index + (key ? (\"_\" + key) : \"\")), true);\n return tree\n}\n\nfunction markStatic (\n tree,\n key,\n isOnce\n) {\n if (Array.isArray(tree)) {\n for (var i = 0; i < tree.length; i++) {\n if (tree[i] && typeof tree[i] !== 'string') {\n markStaticNode(tree[i], (key + \"_\" + i), isOnce);\n }\n }\n } else {\n markStaticNode(tree, key, isOnce);\n }\n}\n\nfunction markStaticNode (node, key, isOnce) {\n node.isStatic = true;\n node.key = key;\n node.isOnce = isOnce;\n}\n\n/* */\n\nfunction bindObjectListeners (data, value) {\n if (value) {\n if (!isPlainObject(value)) {\n process.env.NODE_ENV !== 'production' && warn(\n 'v-on without argument expects an Object value',\n this\n );\n } else {\n var on = data.on = data.on ? extend({}, data.on) : {};\n for (var key in value) {\n var existing = on[key];\n var ours = value[key];\n on[key] = existing ? [].concat(existing, ours) : ours;\n }\n }\n }\n return data\n}\n\n/* */\n\nfunction resolveScopedSlots (\n fns, // see flow/vnode\n res,\n // the following are added in 2.6\n hasDynamicKeys,\n contentHashKey\n) {\n res = res || { $stable: !hasDynamicKeys };\n for (var i = 0; i < fns.length; i++) {\n var slot = fns[i];\n if (Array.isArray(slot)) {\n resolveScopedSlots(slot, res, hasDynamicKeys);\n } else if (slot) {\n // marker for reverse proxying v-slot without scope on this.$slots\n if (slot.proxy) {\n slot.fn.proxy = true;\n }\n res[slot.key] = slot.fn;\n }\n }\n if (contentHashKey) {\n (res).$key = contentHashKey;\n }\n return res\n}\n\n/* */\n\nfunction bindDynamicKeys (baseObj, values) {\n for (var i = 0; i < values.length; i += 2) {\n var key = values[i];\n if (typeof key === 'string' && key) {\n baseObj[values[i]] = values[i + 1];\n } else if (process.env.NODE_ENV !== 'production' && key !== '' && key !== null) {\n // null is a special value for explicitly removing a binding\n warn(\n (\"Invalid value for dynamic directive argument (expected string or null): \" + key),\n this\n );\n }\n }\n return baseObj\n}\n\n// helper to dynamically append modifier runtime markers to event names.\n// ensure only append when value is already string, otherwise it will be cast\n// to string and cause the type check to miss.\nfunction prependModifier (value, symbol) {\n return typeof value === 'string' ? symbol + value : value\n}\n\n/* */\n\nfunction installRenderHelpers (target) {\n target._o = markOnce;\n target._n = toNumber;\n target._s = toString;\n target._l = renderList;\n target._t = renderSlot;\n target._q = looseEqual;\n target._i = looseIndexOf;\n target._m = renderStatic;\n target._f = resolveFilter;\n target._k = checkKeyCodes;\n target._b = bindObjectProps;\n target._v = createTextVNode;\n target._e = createEmptyVNode;\n target._u = resolveScopedSlots;\n target._g = bindObjectListeners;\n target._d = bindDynamicKeys;\n target._p = prependModifier;\n}\n\n/* */\n\nfunction FunctionalRenderContext (\n data,\n props,\n children,\n parent,\n Ctor\n) {\n var this$1 = this;\n\n var options = Ctor.options;\n // ensure the createElement function in functional components\n // gets a unique context - this is necessary for correct named slot check\n var contextVm;\n if (hasOwn(parent, '_uid')) {\n contextVm = Object.create(parent);\n // $flow-disable-line\n contextVm._original = parent;\n } else {\n // the context vm passed in is a functional context as well.\n // in this case we want to make sure we are able to get a hold to the\n // real context instance.\n contextVm = parent;\n // $flow-disable-line\n parent = parent._original;\n }\n var isCompiled = isTrue(options._compiled);\n var needNormalization = !isCompiled;\n\n this.data = data;\n this.props = props;\n this.children = children;\n this.parent = parent;\n this.listeners = data.on || emptyObject;\n this.injections = resolveInject(options.inject, parent);\n this.slots = function () {\n if (!this$1.$slots) {\n normalizeScopedSlots(\n data.scopedSlots,\n this$1.$slots = resolveSlots(children, parent)\n );\n }\n return this$1.$slots\n };\n\n Object.defineProperty(this, 'scopedSlots', ({\n enumerable: true,\n get: function get () {\n return normalizeScopedSlots(data.scopedSlots, this.slots())\n }\n }));\n\n // support for compiled functional template\n if (isCompiled) {\n // exposing $options for renderStatic()\n this.$options = options;\n // pre-resolve slots for renderSlot()\n this.$slots = this.slots();\n this.$scopedSlots = normalizeScopedSlots(data.scopedSlots, this.$slots);\n }\n\n if (options._scopeId) {\n this._c = function (a, b, c, d) {\n var vnode = createElement(contextVm, a, b, c, d, needNormalization);\n if (vnode && !Array.isArray(vnode)) {\n vnode.fnScopeId = options._scopeId;\n vnode.fnContext = parent;\n }\n return vnode\n };\n } else {\n this._c = function (a, b, c, d) { return createElement(contextVm, a, b, c, d, needNormalization); };\n }\n}\n\ninstallRenderHelpers(FunctionalRenderContext.prototype);\n\nfunction createFunctionalComponent (\n Ctor,\n propsData,\n data,\n contextVm,\n children\n) {\n var options = Ctor.options;\n var props = {};\n var propOptions = options.props;\n if (isDef(propOptions)) {\n for (var key in propOptions) {\n props[key] = validateProp(key, propOptions, propsData || emptyObject);\n }\n } else {\n if (isDef(data.attrs)) { mergeProps(props, data.attrs); }\n if (isDef(data.props)) { mergeProps(props, data.props); }\n }\n\n var renderContext = new FunctionalRenderContext(\n data,\n props,\n children,\n contextVm,\n Ctor\n );\n\n var vnode = options.render.call(null, renderContext._c, renderContext);\n\n if (vnode instanceof VNode) {\n return cloneAndMarkFunctionalResult(vnode, data, renderContext.parent, options, renderContext)\n } else if (Array.isArray(vnode)) {\n var vnodes = normalizeChildren(vnode) || [];\n var res = new Array(vnodes.length);\n for (var i = 0; i < vnodes.length; i++) {\n res[i] = cloneAndMarkFunctionalResult(vnodes[i], data, renderContext.parent, options, renderContext);\n }\n return res\n }\n}\n\nfunction cloneAndMarkFunctionalResult (vnode, data, contextVm, options, renderContext) {\n // #7817 clone node before setting fnContext, otherwise if the node is reused\n // (e.g. it was from a cached normal slot) the fnContext causes named slots\n // that should not be matched to match.\n var clone = cloneVNode(vnode);\n clone.fnContext = contextVm;\n clone.fnOptions = options;\n if (process.env.NODE_ENV !== 'production') {\n (clone.devtoolsMeta = clone.devtoolsMeta || {}).renderContext = renderContext;\n }\n if (data.slot) {\n (clone.data || (clone.data = {})).slot = data.slot;\n }\n return clone\n}\n\nfunction mergeProps (to, from) {\n for (var key in from) {\n to[camelize(key)] = from[key];\n }\n}\n\n/* */\n\n/* */\n\n/* */\n\n/* */\n\n// inline hooks to be invoked on component VNodes during patch\nvar componentVNodeHooks = {\n init: function init (vnode, hydrating) {\n if (\n vnode.componentInstance &&\n !vnode.componentInstance._isDestroyed &&\n vnode.data.keepAlive\n ) {\n // kept-alive components, treat as a patch\n var mountedNode = vnode; // work around flow\n componentVNodeHooks.prepatch(mountedNode, mountedNode);\n } else {\n var child = vnode.componentInstance = createComponentInstanceForVnode(\n vnode,\n activeInstance\n );\n child.$mount(hydrating ? vnode.elm : undefined, hydrating);\n }\n },\n\n prepatch: function prepatch (oldVnode, vnode) {\n var options = vnode.componentOptions;\n var child = vnode.componentInstance = oldVnode.componentInstance;\n updateChildComponent(\n child,\n options.propsData, // updated props\n options.listeners, // updated listeners\n vnode, // new parent vnode\n options.children // new children\n );\n },\n\n insert: function insert (vnode) {\n var context = vnode.context;\n var componentInstance = vnode.componentInstance;\n if (!componentInstance._isMounted) {\n componentInstance._isMounted = true;\n callHook(componentInstance, 'mounted');\n }\n if (vnode.data.keepAlive) {\n if (context._isMounted) {\n // vue-router#1212\n // During updates, a kept-alive component's child components may\n // change, so directly walking the tree here may call activated hooks\n // on incorrect children. Instead we push them into a queue which will\n // be processed after the whole patch process ended.\n queueActivatedComponent(componentInstance);\n } else {\n activateChildComponent(componentInstance, true /* direct */);\n }\n }\n },\n\n destroy: function destroy (vnode) {\n var componentInstance = vnode.componentInstance;\n if (!componentInstance._isDestroyed) {\n if (!vnode.data.keepAlive) {\n componentInstance.$destroy();\n } else {\n deactivateChildComponent(componentInstance, true /* direct */);\n }\n }\n }\n};\n\nvar hooksToMerge = Object.keys(componentVNodeHooks);\n\nfunction createComponent (\n Ctor,\n data,\n context,\n children,\n tag\n) {\n if (isUndef(Ctor)) {\n return\n }\n\n var baseCtor = context.$options._base;\n\n // plain options object: turn it into a constructor\n if (isObject(Ctor)) {\n Ctor = baseCtor.extend(Ctor);\n }\n\n // if at this stage it's not a constructor or an async component factory,\n // reject.\n if (typeof Ctor !== 'function') {\n if (process.env.NODE_ENV !== 'production') {\n warn((\"Invalid Component definition: \" + (String(Ctor))), context);\n }\n return\n }\n\n // async component\n var asyncFactory;\n if (isUndef(Ctor.cid)) {\n asyncFactory = Ctor;\n Ctor = resolveAsyncComponent(asyncFactory, baseCtor);\n if (Ctor === undefined) {\n // return a placeholder node for async component, which is rendered\n // as a comment node but preserves all the raw information for the node.\n // the information will be used for async server-rendering and hydration.\n return createAsyncPlaceholder(\n asyncFactory,\n data,\n context,\n children,\n tag\n )\n }\n }\n\n data = data || {};\n\n // resolve constructor options in case global mixins are applied after\n // component constructor creation\n resolveConstructorOptions(Ctor);\n\n // transform component v-model data into props & events\n if (isDef(data.model)) {\n transformModel(Ctor.options, data);\n }\n\n // extract props\n var propsData = extractPropsFromVNodeData(data, Ctor, tag);\n\n // functional component\n if (isTrue(Ctor.options.functional)) {\n return createFunctionalComponent(Ctor, propsData, data, context, children)\n }\n\n // extract listeners, since these needs to be treated as\n // child component listeners instead of DOM listeners\n var listeners = data.on;\n // replace with listeners with .native modifier\n // so it gets processed during parent component patch.\n data.on = data.nativeOn;\n\n if (isTrue(Ctor.options.abstract)) {\n // abstract components do not keep anything\n // other than props & listeners & slot\n\n // work around flow\n var slot = data.slot;\n data = {};\n if (slot) {\n data.slot = slot;\n }\n }\n\n // install component management hooks onto the placeholder node\n installComponentHooks(data);\n\n // return a placeholder vnode\n var name = Ctor.options.name || tag;\n var vnode = new VNode(\n (\"vue-component-\" + (Ctor.cid) + (name ? (\"-\" + name) : '')),\n data, undefined, undefined, undefined, context,\n { Ctor: Ctor, propsData: propsData, listeners: listeners, tag: tag, children: children },\n asyncFactory\n );\n\n return vnode\n}\n\nfunction createComponentInstanceForVnode (\n // we know it's MountedComponentVNode but flow doesn't\n vnode,\n // activeInstance in lifecycle state\n parent\n) {\n var options = {\n _isComponent: true,\n _parentVnode: vnode,\n parent: parent\n };\n // check inline-template render functions\n var inlineTemplate = vnode.data.inlineTemplate;\n if (isDef(inlineTemplate)) {\n options.render = inlineTemplate.render;\n options.staticRenderFns = inlineTemplate.staticRenderFns;\n }\n return new vnode.componentOptions.Ctor(options)\n}\n\nfunction installComponentHooks (data) {\n var hooks = data.hook || (data.hook = {});\n for (var i = 0; i < hooksToMerge.length; i++) {\n var key = hooksToMerge[i];\n var existing = hooks[key];\n var toMerge = componentVNodeHooks[key];\n if (existing !== toMerge && !(existing && existing._merged)) {\n hooks[key] = existing ? mergeHook$1(toMerge, existing) : toMerge;\n }\n }\n}\n\nfunction mergeHook$1 (f1, f2) {\n var merged = function (a, b) {\n // flow complains about extra args which is why we use any\n f1(a, b);\n f2(a, b);\n };\n merged._merged = true;\n return merged\n}\n\n// transform component v-model info (value and callback) into\n// prop and event handler respectively.\nfunction transformModel (options, data) {\n var prop = (options.model && options.model.prop) || 'value';\n var event = (options.model && options.model.event) || 'input'\n ;(data.attrs || (data.attrs = {}))[prop] = data.model.value;\n var on = data.on || (data.on = {});\n var existing = on[event];\n var callback = data.model.callback;\n if (isDef(existing)) {\n if (\n Array.isArray(existing)\n ? existing.indexOf(callback) === -1\n : existing !== callback\n ) {\n on[event] = [callback].concat(existing);\n }\n } else {\n on[event] = callback;\n }\n}\n\n/* */\n\nvar SIMPLE_NORMALIZE = 1;\nvar ALWAYS_NORMALIZE = 2;\n\n// wrapper function for providing a more flexible interface\n// without getting yelled at by flow\nfunction createElement (\n context,\n tag,\n data,\n children,\n normalizationType,\n alwaysNormalize\n) {\n if (Array.isArray(data) || isPrimitive(data)) {\n normalizationType = children;\n children = data;\n data = undefined;\n }\n if (isTrue(alwaysNormalize)) {\n normalizationType = ALWAYS_NORMALIZE;\n }\n return _createElement(context, tag, data, children, normalizationType)\n}\n\nfunction _createElement (\n context,\n tag,\n data,\n children,\n normalizationType\n) {\n if (isDef(data) && isDef((data).__ob__)) {\n process.env.NODE_ENV !== 'production' && warn(\n \"Avoid using observed data object as vnode data: \" + (JSON.stringify(data)) + \"\\n\" +\n 'Always create fresh vnode data objects in each render!',\n context\n );\n return createEmptyVNode()\n }\n // object syntax in v-bind\n if (isDef(data) && isDef(data.is)) {\n tag = data.is;\n }\n if (!tag) {\n // in case of component :is set to falsy value\n return createEmptyVNode()\n }\n // warn against non-primitive key\n if (process.env.NODE_ENV !== 'production' &&\n isDef(data) && isDef(data.key) && !isPrimitive(data.key)\n ) {\n {\n warn(\n 'Avoid using non-primitive value as key, ' +\n 'use string/number value instead.',\n context\n );\n }\n }\n // support single function children as default scoped slot\n if (Array.isArray(children) &&\n typeof children[0] === 'function'\n ) {\n data = data || {};\n data.scopedSlots = { default: children[0] };\n children.length = 0;\n }\n if (normalizationType === ALWAYS_NORMALIZE) {\n children = normalizeChildren(children);\n } else if (normalizationType === SIMPLE_NORMALIZE) {\n children = simpleNormalizeChildren(children);\n }\n var vnode, ns;\n if (typeof tag === 'string') {\n var Ctor;\n ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag);\n if (config.isReservedTag(tag)) {\n // platform built-in elements\n if (process.env.NODE_ENV !== 'production' && isDef(data) && isDef(data.nativeOn) && data.tag !== 'component') {\n warn(\n (\"The .native modifier for v-on is only valid on components but it was used on <\" + tag + \">.\"),\n context\n );\n }\n vnode = new VNode(\n config.parsePlatformTagName(tag), data, children,\n undefined, undefined, context\n );\n } else if ((!data || !data.pre) && isDef(Ctor = resolveAsset(context.$options, 'components', tag))) {\n // component\n vnode = createComponent(Ctor, data, context, children, tag);\n } else {\n // unknown or unlisted namespaced elements\n // check at runtime because it may get assigned a namespace when its\n // parent normalizes children\n vnode = new VNode(\n tag, data, children,\n undefined, undefined, context\n );\n }\n } else {\n // direct component options / constructor\n vnode = createComponent(tag, data, context, children);\n }\n if (Array.isArray(vnode)) {\n return vnode\n } else if (isDef(vnode)) {\n if (isDef(ns)) { applyNS(vnode, ns); }\n if (isDef(data)) { registerDeepBindings(data); }\n return vnode\n } else {\n return createEmptyVNode()\n }\n}\n\nfunction applyNS (vnode, ns, force) {\n vnode.ns = ns;\n if (vnode.tag === 'foreignObject') {\n // use default namespace inside foreignObject\n ns = undefined;\n force = true;\n }\n if (isDef(vnode.children)) {\n for (var i = 0, l = vnode.children.length; i < l; i++) {\n var child = vnode.children[i];\n if (isDef(child.tag) && (\n isUndef(child.ns) || (isTrue(force) && child.tag !== 'svg'))) {\n applyNS(child, ns, force);\n }\n }\n }\n}\n\n// ref #5318\n// necessary to ensure parent re-render when deep bindings like :style and\n// :class are used on slot nodes\nfunction registerDeepBindings (data) {\n if (isObject(data.style)) {\n traverse(data.style);\n }\n if (isObject(data.class)) {\n traverse(data.class);\n }\n}\n\n/* */\n\nfunction initRender (vm) {\n vm._vnode = null; // the root of the child tree\n vm._staticTrees = null; // v-once cached trees\n var options = vm.$options;\n var parentVnode = vm.$vnode = options._parentVnode; // the placeholder node in parent tree\n var renderContext = parentVnode && parentVnode.context;\n vm.$slots = resolveSlots(options._renderChildren, renderContext);\n vm.$scopedSlots = emptyObject;\n // bind the createElement fn to this instance\n // so that we get proper render context inside it.\n // args order: tag, data, children, normalizationType, alwaysNormalize\n // internal version is used by render functions compiled from templates\n vm._c = function (a, b, c, d) { return createElement(vm, a, b, c, d, false); };\n // normalization is always applied for the public version, used in\n // user-written render functions.\n vm.$createElement = function (a, b, c, d) { return createElement(vm, a, b, c, d, true); };\n\n // $attrs & $listeners are exposed for easier HOC creation.\n // they need to be reactive so that HOCs using them are always updated\n var parentData = parentVnode && parentVnode.data;\n\n /* istanbul ignore else */\n if (process.env.NODE_ENV !== 'production') {\n defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, function () {\n !isUpdatingChildComponent && warn(\"$attrs is readonly.\", vm);\n }, true);\n defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, function () {\n !isUpdatingChildComponent && warn(\"$listeners is readonly.\", vm);\n }, true);\n } else {\n defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, null, true);\n defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, null, true);\n }\n}\n\nvar currentRenderingInstance = null;\n\nfunction renderMixin (Vue) {\n // install runtime convenience helpers\n installRenderHelpers(Vue.prototype);\n\n Vue.prototype.$nextTick = function (fn) {\n return nextTick(fn, this)\n };\n\n Vue.prototype._render = function () {\n var vm = this;\n var ref = vm.$options;\n var render = ref.render;\n var _parentVnode = ref._parentVnode;\n\n if (_parentVnode) {\n vm.$scopedSlots = normalizeScopedSlots(\n _parentVnode.data.scopedSlots,\n vm.$slots,\n vm.$scopedSlots\n );\n }\n\n // set parent vnode. this allows render functions to have access\n // to the data on the placeholder node.\n vm.$vnode = _parentVnode;\n // render self\n var vnode;\n try {\n // There's no need to maintain a stack because all render fns are called\n // separately from one another. Nested component's render fns are called\n // when parent component is patched.\n currentRenderingInstance = vm;\n vnode = render.call(vm._renderProxy, vm.$createElement);\n } catch (e) {\n handleError(e, vm, \"render\");\n // return error render result,\n // or previous vnode to prevent render error causing blank component\n /* istanbul ignore else */\n if (process.env.NODE_ENV !== 'production' && vm.$options.renderError) {\n try {\n vnode = vm.$options.renderError.call(vm._renderProxy, vm.$createElement, e);\n } catch (e) {\n handleError(e, vm, \"renderError\");\n vnode = vm._vnode;\n }\n } else {\n vnode = vm._vnode;\n }\n } finally {\n currentRenderingInstance = null;\n }\n // if the returned array contains only a single node, allow it\n if (Array.isArray(vnode) && vnode.length === 1) {\n vnode = vnode[0];\n }\n // return empty vnode in case the render function errored out\n if (!(vnode instanceof VNode)) {\n if (process.env.NODE_ENV !== 'production' && Array.isArray(vnode)) {\n warn(\n 'Multiple root nodes returned from render function. Render function ' +\n 'should return a single root node.',\n vm\n );\n }\n vnode = createEmptyVNode();\n }\n // set parent\n vnode.parent = _parentVnode;\n return vnode\n };\n}\n\n/* */\n\nfunction ensureCtor (comp, base) {\n if (\n comp.__esModule ||\n (hasSymbol && comp[Symbol.toStringTag] === 'Module')\n ) {\n comp = comp.default;\n }\n return isObject(comp)\n ? base.extend(comp)\n : comp\n}\n\nfunction createAsyncPlaceholder (\n factory,\n data,\n context,\n children,\n tag\n) {\n var node = createEmptyVNode();\n node.asyncFactory = factory;\n node.asyncMeta = { data: data, context: context, children: children, tag: tag };\n return node\n}\n\nfunction resolveAsyncComponent (\n factory,\n baseCtor\n) {\n if (isTrue(factory.error) && isDef(factory.errorComp)) {\n return factory.errorComp\n }\n\n if (isDef(factory.resolved)) {\n return factory.resolved\n }\n\n var owner = currentRenderingInstance;\n if (owner && isDef(factory.owners) && factory.owners.indexOf(owner) === -1) {\n // already pending\n factory.owners.push(owner);\n }\n\n if (isTrue(factory.loading) && isDef(factory.loadingComp)) {\n return factory.loadingComp\n }\n\n if (owner && !isDef(factory.owners)) {\n var owners = factory.owners = [owner];\n var sync = true;\n var timerLoading = null;\n var timerTimeout = null\n\n ;(owner).$on('hook:destroyed', function () { return remove(owners, owner); });\n\n var forceRender = function (renderCompleted) {\n for (var i = 0, l = owners.length; i < l; i++) {\n (owners[i]).$forceUpdate();\n }\n\n if (renderCompleted) {\n owners.length = 0;\n if (timerLoading !== null) {\n clearTimeout(timerLoading);\n timerLoading = null;\n }\n if (timerTimeout !== null) {\n clearTimeout(timerTimeout);\n timerTimeout = null;\n }\n }\n };\n\n var resolve = once(function (res) {\n // cache resolved\n factory.resolved = ensureCtor(res, baseCtor);\n // invoke callbacks only if this is not a synchronous resolve\n // (async resolves are shimmed as synchronous during SSR)\n if (!sync) {\n forceRender(true);\n } else {\n owners.length = 0;\n }\n });\n\n var reject = once(function (reason) {\n process.env.NODE_ENV !== 'production' && warn(\n \"Failed to resolve async component: \" + (String(factory)) +\n (reason ? (\"\\nReason: \" + reason) : '')\n );\n if (isDef(factory.errorComp)) {\n factory.error = true;\n forceRender(true);\n }\n });\n\n var res = factory(resolve, reject);\n\n if (isObject(res)) {\n if (isPromise(res)) {\n // () => Promise\n if (isUndef(factory.resolved)) {\n res.then(resolve, reject);\n }\n } else if (isPromise(res.component)) {\n res.component.then(resolve, reject);\n\n if (isDef(res.error)) {\n factory.errorComp = ensureCtor(res.error, baseCtor);\n }\n\n if (isDef(res.loading)) {\n factory.loadingComp = ensureCtor(res.loading, baseCtor);\n if (res.delay === 0) {\n factory.loading = true;\n } else {\n timerLoading = setTimeout(function () {\n timerLoading = null;\n if (isUndef(factory.resolved) && isUndef(factory.error)) {\n factory.loading = true;\n forceRender(false);\n }\n }, res.delay || 200);\n }\n }\n\n if (isDef(res.timeout)) {\n timerTimeout = setTimeout(function () {\n timerTimeout = null;\n if (isUndef(factory.resolved)) {\n reject(\n process.env.NODE_ENV !== 'production'\n ? (\"timeout (\" + (res.timeout) + \"ms)\")\n : null\n );\n }\n }, res.timeout);\n }\n }\n }\n\n sync = false;\n // return in case resolved synchronously\n return factory.loading\n ? factory.loadingComp\n : factory.resolved\n }\n}\n\n/* */\n\nfunction getFirstComponentChild (children) {\n if (Array.isArray(children)) {\n for (var i = 0; i < children.length; i++) {\n var c = children[i];\n if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {\n return c\n }\n }\n }\n}\n\n/* */\n\n/* */\n\nfunction initEvents (vm) {\n vm._events = Object.create(null);\n vm._hasHookEvent = false;\n // init parent attached events\n var listeners = vm.$options._parentListeners;\n if (listeners) {\n updateComponentListeners(vm, listeners);\n }\n}\n\nvar target;\n\nfunction add (event, fn) {\n target.$on(event, fn);\n}\n\nfunction remove$1 (event, fn) {\n target.$off(event, fn);\n}\n\nfunction createOnceHandler (event, fn) {\n var _target = target;\n return function onceHandler () {\n var res = fn.apply(null, arguments);\n if (res !== null) {\n _target.$off(event, onceHandler);\n }\n }\n}\n\nfunction updateComponentListeners (\n vm,\n listeners,\n oldListeners\n) {\n target = vm;\n updateListeners(listeners, oldListeners || {}, add, remove$1, createOnceHandler, vm);\n target = undefined;\n}\n\nfunction eventsMixin (Vue) {\n var hookRE = /^hook:/;\n Vue.prototype.$on = function (event, fn) {\n var vm = this;\n if (Array.isArray(event)) {\n for (var i = 0, l = event.length; i < l; i++) {\n vm.$on(event[i], fn);\n }\n } else {\n (vm._events[event] || (vm._events[event] = [])).push(fn);\n // optimize hook:event cost by using a boolean flag marked at registration\n // instead of a hash lookup\n if (hookRE.test(event)) {\n vm._hasHookEvent = true;\n }\n }\n return vm\n };\n\n Vue.prototype.$once = function (event, fn) {\n var vm = this;\n function on () {\n vm.$off(event, on);\n fn.apply(vm, arguments);\n }\n on.fn = fn;\n vm.$on(event, on);\n return vm\n };\n\n Vue.prototype.$off = function (event, fn) {\n var vm = this;\n // all\n if (!arguments.length) {\n vm._events = Object.create(null);\n return vm\n }\n // array of events\n if (Array.isArray(event)) {\n for (var i$1 = 0, l = event.length; i$1 < l; i$1++) {\n vm.$off(event[i$1], fn);\n }\n return vm\n }\n // specific event\n var cbs = vm._events[event];\n if (!cbs) {\n return vm\n }\n if (!fn) {\n vm._events[event] = null;\n return vm\n }\n // specific handler\n var cb;\n var i = cbs.length;\n while (i--) {\n cb = cbs[i];\n if (cb === fn || cb.fn === fn) {\n cbs.splice(i, 1);\n break\n }\n }\n return vm\n };\n\n Vue.prototype.$emit = function (event) {\n var vm = this;\n if (process.env.NODE_ENV !== 'production') {\n var lowerCaseEvent = event.toLowerCase();\n if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) {\n tip(\n \"Event \\\"\" + lowerCaseEvent + \"\\\" is emitted in component \" +\n (formatComponentName(vm)) + \" but the handler is registered for \\\"\" + event + \"\\\". \" +\n \"Note that HTML attributes are case-insensitive and you cannot use \" +\n \"v-on to listen to camelCase events when using in-DOM templates. \" +\n \"You should probably use \\\"\" + (hyphenate(event)) + \"\\\" instead of \\\"\" + event + \"\\\".\"\n );\n }\n }\n var cbs = vm._events[event];\n if (cbs) {\n cbs = cbs.length > 1 ? toArray(cbs) : cbs;\n var args = toArray(arguments, 1);\n var info = \"event handler for \\\"\" + event + \"\\\"\";\n for (var i = 0, l = cbs.length; i < l; i++) {\n invokeWithErrorHandling(cbs[i], vm, args, vm, info);\n }\n }\n return vm\n };\n}\n\n/* */\n\nvar activeInstance = null;\nvar isUpdatingChildComponent = false;\n\nfunction setActiveInstance(vm) {\n var prevActiveInstance = activeInstance;\n activeInstance = vm;\n return function () {\n activeInstance = prevActiveInstance;\n }\n}\n\nfunction initLifecycle (vm) {\n var options = vm.$options;\n\n // locate first non-abstract parent\n var parent = options.parent;\n if (parent && !options.abstract) {\n while (parent.$options.abstract && parent.$parent) {\n parent = parent.$parent;\n }\n parent.$children.push(vm);\n }\n\n vm.$parent = parent;\n vm.$root = parent ? parent.$root : vm;\n\n vm.$children = [];\n vm.$refs = {};\n\n vm._watcher = null;\n vm._inactive = null;\n vm._directInactive = false;\n vm._isMounted = false;\n vm._isDestroyed = false;\n vm._isBeingDestroyed = false;\n}\n\nfunction lifecycleMixin (Vue) {\n Vue.prototype._update = function (vnode, hydrating) {\n var vm = this;\n var prevEl = vm.$el;\n var prevVnode = vm._vnode;\n var restoreActiveInstance = setActiveInstance(vm);\n vm._vnode = vnode;\n // Vue.prototype.__patch__ is injected in entry points\n // based on the rendering backend used.\n if (!prevVnode) {\n // initial render\n vm.$el = vm.__patch__(vm.$el, vnode, hydrating, false /* removeOnly */);\n } else {\n // updates\n vm.$el = vm.__patch__(prevVnode, vnode);\n }\n restoreActiveInstance();\n // update __vue__ reference\n if (prevEl) {\n prevEl.__vue__ = null;\n }\n if (vm.$el) {\n vm.$el.__vue__ = vm;\n }\n // if parent is an HOC, update its $el as well\n if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) {\n vm.$parent.$el = vm.$el;\n }\n // updated hook is called by the scheduler to ensure that children are\n // updated in a parent's updated hook.\n };\n\n Vue.prototype.$forceUpdate = function () {\n var vm = this;\n if (vm._watcher) {\n vm._watcher.update();\n }\n };\n\n Vue.prototype.$destroy = function () {\n var vm = this;\n if (vm._isBeingDestroyed) {\n return\n }\n callHook(vm, 'beforeDestroy');\n vm._isBeingDestroyed = true;\n // remove self from parent\n var parent = vm.$parent;\n if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) {\n remove(parent.$children, vm);\n }\n // teardown watchers\n if (vm._watcher) {\n vm._watcher.teardown();\n }\n var i = vm._watchers.length;\n while (i--) {\n vm._watchers[i].teardown();\n }\n // remove reference from data ob\n // frozen object may not have observer.\n if (vm._data.__ob__) {\n vm._data.__ob__.vmCount--;\n }\n // call the last hook...\n vm._isDestroyed = true;\n // invoke destroy hooks on current rendered tree\n vm.__patch__(vm._vnode, null);\n // fire destroyed hook\n callHook(vm, 'destroyed');\n // turn off all instance listeners.\n vm.$off();\n // remove __vue__ reference\n if (vm.$el) {\n vm.$el.__vue__ = null;\n }\n // release circular reference (#6759)\n if (vm.$vnode) {\n vm.$vnode.parent = null;\n }\n };\n}\n\nfunction mountComponent (\n vm,\n el,\n hydrating\n) {\n vm.$el = el;\n if (!vm.$options.render) {\n vm.$options.render = createEmptyVNode;\n if (process.env.NODE_ENV !== 'production') {\n /* istanbul ignore if */\n if ((vm.$options.template && vm.$options.template.charAt(0) !== '#') ||\n vm.$options.el || el) {\n warn(\n 'You are using the runtime-only build of Vue where the template ' +\n 'compiler is not available. Either pre-compile the templates into ' +\n 'render functions, or use the compiler-included build.',\n vm\n );\n } else {\n warn(\n 'Failed to mount component: template or render function not defined.',\n vm\n );\n }\n }\n }\n callHook(vm, 'beforeMount');\n\n var updateComponent;\n /* istanbul ignore if */\n if (process.env.NODE_ENV !== 'production' && config.performance && mark) {\n updateComponent = function () {\n var name = vm._name;\n var id = vm._uid;\n var startTag = \"vue-perf-start:\" + id;\n var endTag = \"vue-perf-end:\" + id;\n\n mark(startTag);\n var vnode = vm._render();\n mark(endTag);\n measure((\"vue \" + name + \" render\"), startTag, endTag);\n\n mark(startTag);\n vm._update(vnode, hydrating);\n mark(endTag);\n measure((\"vue \" + name + \" patch\"), startTag, endTag);\n };\n } else {\n updateComponent = function () {\n vm._update(vm._render(), hydrating);\n };\n }\n\n // we set this to vm._watcher inside the watcher's constructor\n // since the watcher's initial patch may call $forceUpdate (e.g. inside child\n // component's mounted hook), which relies on vm._watcher being already defined\n new Watcher(vm, updateComponent, noop, {\n before: function before () {\n if (vm._isMounted && !vm._isDestroyed) {\n callHook(vm, 'beforeUpdate');\n }\n }\n }, true /* isRenderWatcher */);\n hydrating = false;\n\n // manually mounted instance, call mounted on self\n // mounted is called for render-created child components in its inserted hook\n if (vm.$vnode == null) {\n vm._isMounted = true;\n callHook(vm, 'mounted');\n }\n return vm\n}\n\nfunction updateChildComponent (\n vm,\n propsData,\n listeners,\n parentVnode,\n renderChildren\n) {\n if (process.env.NODE_ENV !== 'production') {\n isUpdatingChildComponent = true;\n }\n\n // determine whether component has slot children\n // we need to do this before overwriting $options._renderChildren.\n\n // check if there are dynamic scopedSlots (hand-written or compiled but with\n // dynamic slot names). Static scoped slots compiled from template has the\n // \"$stable\" marker.\n var newScopedSlots = parentVnode.data.scopedSlots;\n var oldScopedSlots = vm.$scopedSlots;\n var hasDynamicScopedSlot = !!(\n (newScopedSlots && !newScopedSlots.$stable) ||\n (oldScopedSlots !== emptyObject && !oldScopedSlots.$stable) ||\n (newScopedSlots && vm.$scopedSlots.$key !== newScopedSlots.$key) ||\n (!newScopedSlots && vm.$scopedSlots.$key)\n );\n\n // Any static slot children from the parent may have changed during parent's\n // update. Dynamic scoped slots may also have changed. In such cases, a forced\n // update is necessary to ensure correctness.\n var needsForceUpdate = !!(\n renderChildren || // has new static slots\n vm.$options._renderChildren || // has old static slots\n hasDynamicScopedSlot\n );\n\n vm.$options._parentVnode = parentVnode;\n vm.$vnode = parentVnode; // update vm's placeholder node without re-render\n\n if (vm._vnode) { // update child tree's parent\n vm._vnode.parent = parentVnode;\n }\n vm.$options._renderChildren = renderChildren;\n\n // update $attrs and $listeners hash\n // these are also reactive so they may trigger child update if the child\n // used them during render\n vm.$attrs = parentVnode.data.attrs || emptyObject;\n vm.$listeners = listeners || emptyObject;\n\n // update props\n if (propsData && vm.$options.props) {\n toggleObserving(false);\n var props = vm._props;\n var propKeys = vm.$options._propKeys || [];\n for (var i = 0; i < propKeys.length; i++) {\n var key = propKeys[i];\n var propOptions = vm.$options.props; // wtf flow?\n props[key] = validateProp(key, propOptions, propsData, vm);\n }\n toggleObserving(true);\n // keep a copy of raw propsData\n vm.$options.propsData = propsData;\n }\n\n // update listeners\n listeners = listeners || emptyObject;\n var oldListeners = vm.$options._parentListeners;\n vm.$options._parentListeners = listeners;\n updateComponentListeners(vm, listeners, oldListeners);\n\n // resolve slots + force update if has children\n if (needsForceUpdate) {\n vm.$slots = resolveSlots(renderChildren, parentVnode.context);\n vm.$forceUpdate();\n }\n\n if (process.env.NODE_ENV !== 'production') {\n isUpdatingChildComponent = false;\n }\n}\n\nfunction isInInactiveTree (vm) {\n while (vm && (vm = vm.$parent)) {\n if (vm._inactive) { return true }\n }\n return false\n}\n\nfunction activateChildComponent (vm, direct) {\n if (direct) {\n vm._directInactive = false;\n if (isInInactiveTree(vm)) {\n return\n }\n } else if (vm._directInactive) {\n return\n }\n if (vm._inactive || vm._inactive === null) {\n vm._inactive = false;\n for (var i = 0; i < vm.$children.length; i++) {\n activateChildComponent(vm.$children[i]);\n }\n callHook(vm, 'activated');\n }\n}\n\nfunction deactivateChildComponent (vm, direct) {\n if (direct) {\n vm._directInactive = true;\n if (isInInactiveTree(vm)) {\n return\n }\n }\n if (!vm._inactive) {\n vm._inactive = true;\n for (var i = 0; i < vm.$children.length; i++) {\n deactivateChildComponent(vm.$children[i]);\n }\n callHook(vm, 'deactivated');\n }\n}\n\nfunction callHook (vm, hook) {\n // #7573 disable dep collection when invoking lifecycle hooks\n pushTarget();\n var handlers = vm.$options[hook];\n var info = hook + \" hook\";\n if (handlers) {\n for (var i = 0, j = handlers.length; i < j; i++) {\n invokeWithErrorHandling(handlers[i], vm, null, vm, info);\n }\n }\n if (vm._hasHookEvent) {\n vm.$emit('hook:' + hook);\n }\n popTarget();\n}\n\n/* */\n\nvar MAX_UPDATE_COUNT = 100;\n\nvar queue = [];\nvar activatedChildren = [];\nvar has = {};\nvar circular = {};\nvar waiting = false;\nvar flushing = false;\nvar index = 0;\n\n/**\n * Reset the scheduler's state.\n */\nfunction resetSchedulerState () {\n index = queue.length = activatedChildren.length = 0;\n has = {};\n if (process.env.NODE_ENV !== 'production') {\n circular = {};\n }\n waiting = flushing = false;\n}\n\n// Async edge case #6566 requires saving the timestamp when event listeners are\n// attached. However, calling performance.now() has a perf overhead especially\n// if the page has thousands of event listeners. Instead, we take a timestamp\n// every time the scheduler flushes and use that for all event listeners\n// attached during that flush.\nvar currentFlushTimestamp = 0;\n\n// Async edge case fix requires storing an event listener's attach timestamp.\nvar getNow = Date.now;\n\n// Determine what event timestamp the browser is using. Annoyingly, the\n// timestamp can either be hi-res (relative to page load) or low-res\n// (relative to UNIX epoch), so in order to compare time we have to use the\n// same timestamp type when saving the flush timestamp.\n// All IE versions use low-res event timestamps, and have problematic clock\n// implementations (#9632)\nif (inBrowser && !isIE) {\n var performance = window.performance;\n if (\n performance &&\n typeof performance.now === 'function' &&\n getNow() > document.createEvent('Event').timeStamp\n ) {\n // if the event timestamp, although evaluated AFTER the Date.now(), is\n // smaller than it, it means the event is using a hi-res timestamp,\n // and we need to use the hi-res version for event listener timestamps as\n // well.\n getNow = function () { return performance.now(); };\n }\n}\n\n/**\n * Flush both queues and run the watchers.\n */\nfunction flushSchedulerQueue () {\n currentFlushTimestamp = getNow();\n flushing = true;\n var watcher, id;\n\n // Sort queue before flush.\n // This ensures that:\n // 1. Components are updated from parent to child. (because parent is always\n // created before the child)\n // 2. A component's user watchers are run before its render watcher (because\n // user watchers are created before the render watcher)\n // 3. If a component is destroyed during a parent component's watcher run,\n // its watchers can be skipped.\n queue.sort(function (a, b) { return a.id - b.id; });\n\n // do not cache length because more watchers might be pushed\n // as we run existing watchers\n for (index = 0; index < queue.length; index++) {\n watcher = queue[index];\n if (watcher.before) {\n watcher.before();\n }\n id = watcher.id;\n has[id] = null;\n watcher.run();\n // in dev build, check and stop circular updates.\n if (process.env.NODE_ENV !== 'production' && has[id] != null) {\n circular[id] = (circular[id] || 0) + 1;\n if (circular[id] > MAX_UPDATE_COUNT) {\n warn(\n 'You may have an infinite update loop ' + (\n watcher.user\n ? (\"in watcher with expression \\\"\" + (watcher.expression) + \"\\\"\")\n : \"in a component render function.\"\n ),\n watcher.vm\n );\n break\n }\n }\n }\n\n // keep copies of post queues before resetting state\n var activatedQueue = activatedChildren.slice();\n var updatedQueue = queue.slice();\n\n resetSchedulerState();\n\n // call component updated and activated hooks\n callActivatedHooks(activatedQueue);\n callUpdatedHooks(updatedQueue);\n\n // devtool hook\n /* istanbul ignore if */\n if (devtools && config.devtools) {\n devtools.emit('flush');\n }\n}\n\nfunction callUpdatedHooks (queue) {\n var i = queue.length;\n while (i--) {\n var watcher = queue[i];\n var vm = watcher.vm;\n if (vm._watcher === watcher && vm._isMounted && !vm._isDestroyed) {\n callHook(vm, 'updated');\n }\n }\n}\n\n/**\n * Queue a kept-alive component that was activated during patch.\n * The queue will be processed after the entire tree has been patched.\n */\nfunction queueActivatedComponent (vm) {\n // setting _inactive to false here so that a render function can\n // rely on checking whether it's in an inactive tree (e.g. router-view)\n vm._inactive = false;\n activatedChildren.push(vm);\n}\n\nfunction callActivatedHooks (queue) {\n for (var i = 0; i < queue.length; i++) {\n queue[i]._inactive = true;\n activateChildComponent(queue[i], true /* true */);\n }\n}\n\n/**\n * Push a watcher into the watcher queue.\n * Jobs with duplicate IDs will be skipped unless it's\n * pushed when the queue is being flushed.\n */\nfunction queueWatcher (watcher) {\n var id = watcher.id;\n if (has[id] == null) {\n has[id] = true;\n if (!flushing) {\n queue.push(watcher);\n } else {\n // if already flushing, splice the watcher based on its id\n // if already past its id, it will be run next immediately.\n var i = queue.length - 1;\n while (i > index && queue[i].id > watcher.id) {\n i--;\n }\n queue.splice(i + 1, 0, watcher);\n }\n // queue the flush\n if (!waiting) {\n waiting = true;\n\n if (process.env.NODE_ENV !== 'production' && !config.async) {\n flushSchedulerQueue();\n return\n }\n nextTick(flushSchedulerQueue);\n }\n }\n}\n\n/* */\n\n\n\nvar uid$2 = 0;\n\n/**\n * A watcher parses an expression, collects dependencies,\n * and fires callback when the expression value changes.\n * This is used for both the $watch() api and directives.\n */\nvar Watcher = function Watcher (\n vm,\n expOrFn,\n cb,\n options,\n isRenderWatcher\n) {\n this.vm = vm;\n if (isRenderWatcher) {\n vm._watcher = this;\n }\n vm._watchers.push(this);\n // options\n if (options) {\n this.deep = !!options.deep;\n this.user = !!options.user;\n this.lazy = !!options.lazy;\n this.sync = !!options.sync;\n this.before = options.before;\n } else {\n this.deep = this.user = this.lazy = this.sync = false;\n }\n this.cb = cb;\n this.id = ++uid$2; // uid for batching\n this.active = true;\n this.dirty = this.lazy; // for lazy watchers\n this.deps = [];\n this.newDeps = [];\n this.depIds = new _Set();\n this.newDepIds = new _Set();\n this.expression = process.env.NODE_ENV !== 'production'\n ? expOrFn.toString()\n : '';\n // parse expression for getter\n if (typeof expOrFn === 'function') {\n this.getter = expOrFn;\n } else {\n this.getter = parsePath(expOrFn);\n if (!this.getter) {\n this.getter = noop;\n process.env.NODE_ENV !== 'production' && warn(\n \"Failed watching path: \\\"\" + expOrFn + \"\\\" \" +\n 'Watcher only accepts simple dot-delimited paths. ' +\n 'For full control, use a function instead.',\n vm\n );\n }\n }\n this.value = this.lazy\n ? undefined\n : this.get();\n};\n\n/**\n * Evaluate the getter, and re-collect dependencies.\n */\nWatcher.prototype.get = function get () {\n pushTarget(this);\n var value;\n var vm = this.vm;\n try {\n value = this.getter.call(vm, vm);\n } catch (e) {\n if (this.user) {\n handleError(e, vm, (\"getter for watcher \\\"\" + (this.expression) + \"\\\"\"));\n } else {\n throw e\n }\n } finally {\n // \"touch\" every property so they are all tracked as\n // dependencies for deep watching\n if (this.deep) {\n traverse(value);\n }\n popTarget();\n this.cleanupDeps();\n }\n return value\n};\n\n/**\n * Add a dependency to this directive.\n */\nWatcher.prototype.addDep = function addDep (dep) {\n var id = dep.id;\n if (!this.newDepIds.has(id)) {\n this.newDepIds.add(id);\n this.newDeps.push(dep);\n if (!this.depIds.has(id)) {\n dep.addSub(this);\n }\n }\n};\n\n/**\n * Clean up for dependency collection.\n */\nWatcher.prototype.cleanupDeps = function cleanupDeps () {\n var i = this.deps.length;\n while (i--) {\n var dep = this.deps[i];\n if (!this.newDepIds.has(dep.id)) {\n dep.removeSub(this);\n }\n }\n var tmp = this.depIds;\n this.depIds = this.newDepIds;\n this.newDepIds = tmp;\n this.newDepIds.clear();\n tmp = this.deps;\n this.deps = this.newDeps;\n this.newDeps = tmp;\n this.newDeps.length = 0;\n};\n\n/**\n * Subscriber interface.\n * Will be called when a dependency changes.\n */\nWatcher.prototype.update = function update () {\n /* istanbul ignore else */\n if (this.lazy) {\n this.dirty = true;\n } else if (this.sync) {\n this.run();\n } else {\n queueWatcher(this);\n }\n};\n\n/**\n * Scheduler job interface.\n * Will be called by the scheduler.\n */\nWatcher.prototype.run = function run () {\n if (this.active) {\n var value = this.get();\n if (\n value !== this.value ||\n // Deep watchers and watchers on Object/Arrays should fire even\n // when the value is the same, because the value may\n // have mutated.\n isObject(value) ||\n this.deep\n ) {\n // set new value\n var oldValue = this.value;\n this.value = value;\n if (this.user) {\n var info = \"callback for watcher \\\"\" + (this.expression) + \"\\\"\";\n invokeWithErrorHandling(this.cb, this.vm, [value, oldValue], this.vm, info);\n } else {\n this.cb.call(this.vm, value, oldValue);\n }\n }\n }\n};\n\n/**\n * Evaluate the value of the watcher.\n * This only gets called for lazy watchers.\n */\nWatcher.prototype.evaluate = function evaluate () {\n this.value = this.get();\n this.dirty = false;\n};\n\n/**\n * Depend on all deps collected by this watcher.\n */\nWatcher.prototype.depend = function depend () {\n var i = this.deps.length;\n while (i--) {\n this.deps[i].depend();\n }\n};\n\n/**\n * Remove self from all dependencies' subscriber list.\n */\nWatcher.prototype.teardown = function teardown () {\n if (this.active) {\n // remove self from vm's watcher list\n // this is a somewhat expensive operation so we skip it\n // if the vm is being destroyed.\n if (!this.vm._isBeingDestroyed) {\n remove(this.vm._watchers, this);\n }\n var i = this.deps.length;\n while (i--) {\n this.deps[i].removeSub(this);\n }\n this.active = false;\n }\n};\n\n/* */\n\nvar sharedPropertyDefinition = {\n enumerable: true,\n configurable: true,\n get: noop,\n set: noop\n};\n\nfunction proxy (target, sourceKey, key) {\n sharedPropertyDefinition.get = function proxyGetter () {\n return this[sourceKey][key]\n };\n sharedPropertyDefinition.set = function proxySetter (val) {\n this[sourceKey][key] = val;\n };\n Object.defineProperty(target, key, sharedPropertyDefinition);\n}\n\nfunction initState (vm) {\n vm._watchers = [];\n var opts = vm.$options;\n if (opts.props) { initProps(vm, opts.props); }\n if (opts.methods) { initMethods(vm, opts.methods); }\n if (opts.data) {\n initData(vm);\n } else {\n observe(vm._data = {}, true /* asRootData */);\n }\n if (opts.computed) { initComputed(vm, opts.computed); }\n if (opts.watch && opts.watch !== nativeWatch) {\n initWatch(vm, opts.watch);\n }\n}\n\nfunction initProps (vm, propsOptions) {\n var propsData = vm.$options.propsData || {};\n var props = vm._props = {};\n // cache prop keys so that future props updates can iterate using Array\n // instead of dynamic object key enumeration.\n var keys = vm.$options._propKeys = [];\n var isRoot = !vm.$parent;\n // root instance props should be converted\n if (!isRoot) {\n toggleObserving(false);\n }\n var loop = function ( key ) {\n keys.push(key);\n var value = validateProp(key, propsOptions, propsData, vm);\n /* istanbul ignore else */\n if (process.env.NODE_ENV !== 'production') {\n var hyphenatedKey = hyphenate(key);\n if (isReservedAttribute(hyphenatedKey) ||\n config.isReservedAttr(hyphenatedKey)) {\n warn(\n (\"\\\"\" + hyphenatedKey + \"\\\" is a reserved attribute and cannot be used as component prop.\"),\n vm\n );\n }\n defineReactive$$1(props, key, value, function () {\n if (!isRoot && !isUpdatingChildComponent) {\n warn(\n \"Avoid mutating a prop directly since the value will be \" +\n \"overwritten whenever the parent component re-renders. \" +\n \"Instead, use a data or computed property based on the prop's \" +\n \"value. Prop being mutated: \\\"\" + key + \"\\\"\",\n vm\n );\n }\n });\n } else {\n defineReactive$$1(props, key, value);\n }\n // static props are already proxied on the component's prototype\n // during Vue.extend(). We only need to proxy props defined at\n // instantiation here.\n if (!(key in vm)) {\n proxy(vm, \"_props\", key);\n }\n };\n\n for (var key in propsOptions) loop( key );\n toggleObserving(true);\n}\n\nfunction initData (vm) {\n var data = vm.$options.data;\n data = vm._data = typeof data === 'function'\n ? getData(data, vm)\n : data || {};\n if (!isPlainObject(data)) {\n data = {};\n process.env.NODE_ENV !== 'production' && warn(\n 'data functions should return an object:\\n' +\n 'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function',\n vm\n );\n }\n // proxy data on instance\n var keys = Object.keys(data);\n var props = vm.$options.props;\n var methods = vm.$options.methods;\n var i = keys.length;\n while (i--) {\n var key = keys[i];\n if (process.env.NODE_ENV !== 'production') {\n if (methods && hasOwn(methods, key)) {\n warn(\n (\"Method \\\"\" + key + \"\\\" has already been defined as a data property.\"),\n vm\n );\n }\n }\n if (props && hasOwn(props, key)) {\n process.env.NODE_ENV !== 'production' && warn(\n \"The data property \\\"\" + key + \"\\\" is already declared as a prop. \" +\n \"Use prop default value instead.\",\n vm\n );\n } else if (!isReserved(key)) {\n proxy(vm, \"_data\", key);\n }\n }\n // observe data\n observe(data, true /* asRootData */);\n}\n\nfunction getData (data, vm) {\n // #7573 disable dep collection when invoking data getters\n pushTarget();\n try {\n return data.call(vm, vm)\n } catch (e) {\n handleError(e, vm, \"data()\");\n return {}\n } finally {\n popTarget();\n }\n}\n\nvar computedWatcherOptions = { lazy: true };\n\nfunction initComputed (vm, computed) {\n // $flow-disable-line\n var watchers = vm._computedWatchers = Object.create(null);\n // computed properties are just getters during SSR\n var isSSR = isServerRendering();\n\n for (var key in computed) {\n var userDef = computed[key];\n var getter = typeof userDef === 'function' ? userDef : userDef.get;\n if (process.env.NODE_ENV !== 'production' && getter == null) {\n warn(\n (\"Getter is missing for computed property \\\"\" + key + \"\\\".\"),\n vm\n );\n }\n\n if (!isSSR) {\n // create internal watcher for the computed property.\n watchers[key] = new Watcher(\n vm,\n getter || noop,\n noop,\n computedWatcherOptions\n );\n }\n\n // component-defined computed properties are already defined on the\n // component prototype. We only need to define computed properties defined\n // at instantiation here.\n if (!(key in vm)) {\n defineComputed(vm, key, userDef);\n } else if (process.env.NODE_ENV !== 'production') {\n if (key in vm.$data) {\n warn((\"The computed property \\\"\" + key + \"\\\" is already defined in data.\"), vm);\n } else if (vm.$options.props && key in vm.$options.props) {\n warn((\"The computed property \\\"\" + key + \"\\\" is already defined as a prop.\"), vm);\n } else if (vm.$options.methods && key in vm.$options.methods) {\n warn((\"The computed property \\\"\" + key + \"\\\" is already defined as a method.\"), vm);\n }\n }\n }\n}\n\nfunction defineComputed (\n target,\n key,\n userDef\n) {\n var shouldCache = !isServerRendering();\n if (typeof userDef === 'function') {\n sharedPropertyDefinition.get = shouldCache\n ? createComputedGetter(key)\n : createGetterInvoker(userDef);\n sharedPropertyDefinition.set = noop;\n } else {\n sharedPropertyDefinition.get = userDef.get\n ? shouldCache && userDef.cache !== false\n ? createComputedGetter(key)\n : createGetterInvoker(userDef.get)\n : noop;\n sharedPropertyDefinition.set = userDef.set || noop;\n }\n if (process.env.NODE_ENV !== 'production' &&\n sharedPropertyDefinition.set === noop) {\n sharedPropertyDefinition.set = function () {\n warn(\n (\"Computed property \\\"\" + key + \"\\\" was assigned to but it has no setter.\"),\n this\n );\n };\n }\n Object.defineProperty(target, key, sharedPropertyDefinition);\n}\n\nfunction createComputedGetter (key) {\n return function computedGetter () {\n var watcher = this._computedWatchers && this._computedWatchers[key];\n if (watcher) {\n if (watcher.dirty) {\n watcher.evaluate();\n }\n if (Dep.target) {\n watcher.depend();\n }\n return watcher.value\n }\n }\n}\n\nfunction createGetterInvoker(fn) {\n return function computedGetter () {\n return fn.call(this, this)\n }\n}\n\nfunction initMethods (vm, methods) {\n var props = vm.$options.props;\n for (var key in methods) {\n if (process.env.NODE_ENV !== 'production') {\n if (typeof methods[key] !== 'function') {\n warn(\n \"Method \\\"\" + key + \"\\\" has type \\\"\" + (typeof methods[key]) + \"\\\" in the component definition. \" +\n \"Did you reference the function correctly?\",\n vm\n );\n }\n if (props && hasOwn(props, key)) {\n warn(\n (\"Method \\\"\" + key + \"\\\" has already been defined as a prop.\"),\n vm\n );\n }\n if ((key in vm) && isReserved(key)) {\n warn(\n \"Method \\\"\" + key + \"\\\" conflicts with an existing Vue instance method. \" +\n \"Avoid defining component methods that start with _ or $.\"\n );\n }\n }\n vm[key] = typeof methods[key] !== 'function' ? noop : bind(methods[key], vm);\n }\n}\n\nfunction initWatch (vm, watch) {\n for (var key in watch) {\n var handler = watch[key];\n if (Array.isArray(handler)) {\n for (var i = 0; i < handler.length; i++) {\n createWatcher(vm, key, handler[i]);\n }\n } else {\n createWatcher(vm, key, handler);\n }\n }\n}\n\nfunction createWatcher (\n vm,\n expOrFn,\n handler,\n options\n) {\n if (isPlainObject(handler)) {\n options = handler;\n handler = handler.handler;\n }\n if (typeof handler === 'string') {\n handler = vm[handler];\n }\n return vm.$watch(expOrFn, handler, options)\n}\n\nfunction stateMixin (Vue) {\n // flow somehow has problems with directly declared definition object\n // when using Object.defineProperty, so we have to procedurally build up\n // the object here.\n var dataDef = {};\n dataDef.get = function () { return this._data };\n var propsDef = {};\n propsDef.get = function () { return this._props };\n if (process.env.NODE_ENV !== 'production') {\n dataDef.set = function () {\n warn(\n 'Avoid replacing instance root $data. ' +\n 'Use nested data properties instead.',\n this\n );\n };\n propsDef.set = function () {\n warn(\"$props is readonly.\", this);\n };\n }\n Object.defineProperty(Vue.prototype, '$data', dataDef);\n Object.defineProperty(Vue.prototype, '$props', propsDef);\n\n Vue.prototype.$set = set;\n Vue.prototype.$delete = del;\n\n Vue.prototype.$watch = function (\n expOrFn,\n cb,\n options\n ) {\n var vm = this;\n if (isPlainObject(cb)) {\n return createWatcher(vm, expOrFn, cb, options)\n }\n options = options || {};\n options.user = true;\n var watcher = new Watcher(vm, expOrFn, cb, options);\n if (options.immediate) {\n var info = \"callback for immediate watcher \\\"\" + (watcher.expression) + \"\\\"\";\n pushTarget();\n invokeWithErrorHandling(cb, vm, [watcher.value], vm, info);\n popTarget();\n }\n return function unwatchFn () {\n watcher.teardown();\n }\n };\n}\n\n/* */\n\nvar uid$3 = 0;\n\nfunction initMixin (Vue) {\n Vue.prototype._init = function (options) {\n var vm = this;\n // a uid\n vm._uid = uid$3++;\n\n var startTag, endTag;\n /* istanbul ignore if */\n if (process.env.NODE_ENV !== 'production' && config.performance && mark) {\n startTag = \"vue-perf-start:\" + (vm._uid);\n endTag = \"vue-perf-end:\" + (vm._uid);\n mark(startTag);\n }\n\n // a flag to avoid this being observed\n vm._isVue = true;\n // merge options\n if (options && options._isComponent) {\n // optimize internal component instantiation\n // since dynamic options merging is pretty slow, and none of the\n // internal component options needs special treatment.\n initInternalComponent(vm, options);\n } else {\n vm.$options = mergeOptions(\n resolveConstructorOptions(vm.constructor),\n options || {},\n vm\n );\n }\n /* istanbul ignore else */\n if (process.env.NODE_ENV !== 'production') {\n initProxy(vm);\n } else {\n vm._renderProxy = vm;\n }\n // expose real self\n vm._self = vm;\n initLifecycle(vm);\n initEvents(vm);\n initRender(vm);\n callHook(vm, 'beforeCreate');\n initInjections(vm); // resolve injections before data/props\n initState(vm);\n initProvide(vm); // resolve provide after data/props\n callHook(vm, 'created');\n\n /* istanbul ignore if */\n if (process.env.NODE_ENV !== 'production' && config.performance && mark) {\n vm._name = formatComponentName(vm, false);\n mark(endTag);\n measure((\"vue \" + (vm._name) + \" init\"), startTag, endTag);\n }\n\n if (vm.$options.el) {\n vm.$mount(vm.$options.el);\n }\n };\n}\n\nfunction initInternalComponent (vm, options) {\n var opts = vm.$options = Object.create(vm.constructor.options);\n // doing this because it's faster than dynamic enumeration.\n var parentVnode = options._parentVnode;\n opts.parent = options.parent;\n opts._parentVnode = parentVnode;\n\n var vnodeComponentOptions = parentVnode.componentOptions;\n opts.propsData = vnodeComponentOptions.propsData;\n opts._parentListeners = vnodeComponentOptions.listeners;\n opts._renderChildren = vnodeComponentOptions.children;\n opts._componentTag = vnodeComponentOptions.tag;\n\n if (options.render) {\n opts.render = options.render;\n opts.staticRenderFns = options.staticRenderFns;\n }\n}\n\nfunction resolveConstructorOptions (Ctor) {\n var options = Ctor.options;\n if (Ctor.super) {\n var superOptions = resolveConstructorOptions(Ctor.super);\n var cachedSuperOptions = Ctor.superOptions;\n if (superOptions !== cachedSuperOptions) {\n // super option changed,\n // need to resolve new options.\n Ctor.superOptions = superOptions;\n // check if there are any late-modified/attached options (#4976)\n var modifiedOptions = resolveModifiedOptions(Ctor);\n // update base extend options\n if (modifiedOptions) {\n extend(Ctor.extendOptions, modifiedOptions);\n }\n options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions);\n if (options.name) {\n options.components[options.name] = Ctor;\n }\n }\n }\n return options\n}\n\nfunction resolveModifiedOptions (Ctor) {\n var modified;\n var latest = Ctor.options;\n var sealed = Ctor.sealedOptions;\n for (var key in latest) {\n if (latest[key] !== sealed[key]) {\n if (!modified) { modified = {}; }\n modified[key] = latest[key];\n }\n }\n return modified\n}\n\nfunction Vue (options) {\n if (process.env.NODE_ENV !== 'production' &&\n !(this instanceof Vue)\n ) {\n warn('Vue is a constructor and should be called with the `new` keyword');\n }\n this._init(options);\n}\n\ninitMixin(Vue);\nstateMixin(Vue);\neventsMixin(Vue);\nlifecycleMixin(Vue);\nrenderMixin(Vue);\n\n/* */\n\nfunction initUse (Vue) {\n Vue.use = function (plugin) {\n var installedPlugins = (this._installedPlugins || (this._installedPlugins = []));\n if (installedPlugins.indexOf(plugin) > -1) {\n return this\n }\n\n // additional parameters\n var args = toArray(arguments, 1);\n args.unshift(this);\n if (typeof plugin.install === 'function') {\n plugin.install.apply(plugin, args);\n } else if (typeof plugin === 'function') {\n plugin.apply(null, args);\n }\n installedPlugins.push(plugin);\n return this\n };\n}\n\n/* */\n\nfunction initMixin$1 (Vue) {\n Vue.mixin = function (mixin) {\n this.options = mergeOptions(this.options, mixin);\n return this\n };\n}\n\n/* */\n\nfunction initExtend (Vue) {\n /**\n * Each instance constructor, including Vue, has a unique\n * cid. This enables us to create wrapped \"child\n * constructors\" for prototypal inheritance and cache them.\n */\n Vue.cid = 0;\n var cid = 1;\n\n /**\n * Class inheritance\n */\n Vue.extend = function (extendOptions) {\n extendOptions = extendOptions || {};\n var Super = this;\n var SuperId = Super.cid;\n var cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {});\n if (cachedCtors[SuperId]) {\n return cachedCtors[SuperId]\n }\n\n var name = extendOptions.name || Super.options.name;\n if (process.env.NODE_ENV !== 'production' && name) {\n validateComponentName(name);\n }\n\n var Sub = function VueComponent (options) {\n this._init(options);\n };\n Sub.prototype = Object.create(Super.prototype);\n Sub.prototype.constructor = Sub;\n Sub.cid = cid++;\n Sub.options = mergeOptions(\n Super.options,\n extendOptions\n );\n Sub['super'] = Super;\n\n // For props and computed properties, we define the proxy getters on\n // the Vue instances at extension time, on the extended prototype. This\n // avoids Object.defineProperty calls for each instance created.\n if (Sub.options.props) {\n initProps$1(Sub);\n }\n if (Sub.options.computed) {\n initComputed$1(Sub);\n }\n\n // allow further extension/mixin/plugin usage\n Sub.extend = Super.extend;\n Sub.mixin = Super.mixin;\n Sub.use = Super.use;\n\n // create asset registers, so extended classes\n // can have their private assets too.\n ASSET_TYPES.forEach(function (type) {\n Sub[type] = Super[type];\n });\n // enable recursive self-lookup\n if (name) {\n Sub.options.components[name] = Sub;\n }\n\n // keep a reference to the super options at extension time.\n // later at instantiation we can check if Super's options have\n // been updated.\n Sub.superOptions = Super.options;\n Sub.extendOptions = extendOptions;\n Sub.sealedOptions = extend({}, Sub.options);\n\n // cache constructor\n cachedCtors[SuperId] = Sub;\n return Sub\n };\n}\n\nfunction initProps$1 (Comp) {\n var props = Comp.options.props;\n for (var key in props) {\n proxy(Comp.prototype, \"_props\", key);\n }\n}\n\nfunction initComputed$1 (Comp) {\n var computed = Comp.options.computed;\n for (var key in computed) {\n defineComputed(Comp.prototype, key, computed[key]);\n }\n}\n\n/* */\n\nfunction initAssetRegisters (Vue) {\n /**\n * Create asset registration methods.\n */\n ASSET_TYPES.forEach(function (type) {\n Vue[type] = function (\n id,\n definition\n ) {\n if (!definition) {\n return this.options[type + 's'][id]\n } else {\n /* istanbul ignore if */\n if (process.env.NODE_ENV !== 'production' && type === 'component') {\n validateComponentName(id);\n }\n if (type === 'component' && isPlainObject(definition)) {\n definition.name = definition.name || id;\n definition = this.options._base.extend(definition);\n }\n if (type === 'directive' && typeof definition === 'function') {\n definition = { bind: definition, update: definition };\n }\n this.options[type + 's'][id] = definition;\n return definition\n }\n };\n });\n}\n\n/* */\n\n\n\n\n\nfunction getComponentName (opts) {\n return opts && (opts.Ctor.options.name || opts.tag)\n}\n\nfunction matches (pattern, name) {\n if (Array.isArray(pattern)) {\n return pattern.indexOf(name) > -1\n } else if (typeof pattern === 'string') {\n return pattern.split(',').indexOf(name) > -1\n } else if (isRegExp(pattern)) {\n return pattern.test(name)\n }\n /* istanbul ignore next */\n return false\n}\n\nfunction pruneCache (keepAliveInstance, filter) {\n var cache = keepAliveInstance.cache;\n var keys = keepAliveInstance.keys;\n var _vnode = keepAliveInstance._vnode;\n for (var key in cache) {\n var entry = cache[key];\n if (entry) {\n var name = entry.name;\n if (name && !filter(name)) {\n pruneCacheEntry(cache, key, keys, _vnode);\n }\n }\n }\n}\n\nfunction pruneCacheEntry (\n cache,\n key,\n keys,\n current\n) {\n var entry = cache[key];\n if (entry && (!current || entry.tag !== current.tag)) {\n entry.componentInstance.$destroy();\n }\n cache[key] = null;\n remove(keys, key);\n}\n\nvar patternTypes = [String, RegExp, Array];\n\nvar KeepAlive = {\n name: 'keep-alive',\n abstract: true,\n\n props: {\n include: patternTypes,\n exclude: patternTypes,\n max: [String, Number]\n },\n\n methods: {\n cacheVNode: function cacheVNode() {\n var ref = this;\n var cache = ref.cache;\n var keys = ref.keys;\n var vnodeToCache = ref.vnodeToCache;\n var keyToCache = ref.keyToCache;\n if (vnodeToCache) {\n var tag = vnodeToCache.tag;\n var componentInstance = vnodeToCache.componentInstance;\n var componentOptions = vnodeToCache.componentOptions;\n cache[keyToCache] = {\n name: getComponentName(componentOptions),\n tag: tag,\n componentInstance: componentInstance,\n };\n keys.push(keyToCache);\n // prune oldest entry\n if (this.max && keys.length > parseInt(this.max)) {\n pruneCacheEntry(cache, keys[0], keys, this._vnode);\n }\n this.vnodeToCache = null;\n }\n }\n },\n\n created: function created () {\n this.cache = Object.create(null);\n this.keys = [];\n },\n\n destroyed: function destroyed () {\n for (var key in this.cache) {\n pruneCacheEntry(this.cache, key, this.keys);\n }\n },\n\n mounted: function mounted () {\n var this$1 = this;\n\n this.cacheVNode();\n this.$watch('include', function (val) {\n pruneCache(this$1, function (name) { return matches(val, name); });\n });\n this.$watch('exclude', function (val) {\n pruneCache(this$1, function (name) { return !matches(val, name); });\n });\n },\n\n updated: function updated () {\n this.cacheVNode();\n },\n\n render: function render () {\n var slot = this.$slots.default;\n var vnode = getFirstComponentChild(slot);\n var componentOptions = vnode && vnode.componentOptions;\n if (componentOptions) {\n // check pattern\n var name = getComponentName(componentOptions);\n var ref = this;\n var include = ref.include;\n var exclude = ref.exclude;\n if (\n // not included\n (include && (!name || !matches(include, name))) ||\n // excluded\n (exclude && name && matches(exclude, name))\n ) {\n return vnode\n }\n\n var ref$1 = this;\n var cache = ref$1.cache;\n var keys = ref$1.keys;\n var key = vnode.key == null\n // same constructor may get registered as different local components\n // so cid alone is not enough (#3269)\n ? componentOptions.Ctor.cid + (componentOptions.tag ? (\"::\" + (componentOptions.tag)) : '')\n : vnode.key;\n if (cache[key]) {\n vnode.componentInstance = cache[key].componentInstance;\n // make current key freshest\n remove(keys, key);\n keys.push(key);\n } else {\n // delay setting the cache until update\n this.vnodeToCache = vnode;\n this.keyToCache = key;\n }\n\n vnode.data.keepAlive = true;\n }\n return vnode || (slot && slot[0])\n }\n};\n\nvar builtInComponents = {\n KeepAlive: KeepAlive\n};\n\n/* */\n\nfunction initGlobalAPI (Vue) {\n // config\n var configDef = {};\n configDef.get = function () { return config; };\n if (process.env.NODE_ENV !== 'production') {\n configDef.set = function () {\n warn(\n 'Do not replace the Vue.config object, set individual fields instead.'\n );\n };\n }\n Object.defineProperty(Vue, 'config', configDef);\n\n // exposed util methods.\n // NOTE: these are not considered part of the public API - avoid relying on\n // them unless you are aware of the risk.\n Vue.util = {\n warn: warn,\n extend: extend,\n mergeOptions: mergeOptions,\n defineReactive: defineReactive$$1\n };\n\n Vue.set = set;\n Vue.delete = del;\n Vue.nextTick = nextTick;\n\n // 2.6 explicit observable API\n Vue.observable = function (obj) {\n observe(obj);\n return obj\n };\n\n Vue.options = Object.create(null);\n ASSET_TYPES.forEach(function (type) {\n Vue.options[type + 's'] = Object.create(null);\n });\n\n // this is used to identify the \"base\" constructor to extend all plain-object\n // components with in Weex's multi-instance scenarios.\n Vue.options._base = Vue;\n\n extend(Vue.options.components, builtInComponents);\n\n initUse(Vue);\n initMixin$1(Vue);\n initExtend(Vue);\n initAssetRegisters(Vue);\n}\n\ninitGlobalAPI(Vue);\n\nObject.defineProperty(Vue.prototype, '$isServer', {\n get: isServerRendering\n});\n\nObject.defineProperty(Vue.prototype, '$ssrContext', {\n get: function get () {\n /* istanbul ignore next */\n return this.$vnode && this.$vnode.ssrContext\n }\n});\n\n// expose FunctionalRenderContext for ssr runtime helper installation\nObject.defineProperty(Vue, 'FunctionalRenderContext', {\n value: FunctionalRenderContext\n});\n\nVue.version = '2.6.14';\n\n/* */\n\n// these are reserved for web because they are directly compiled away\n// during template compilation\nvar isReservedAttr = makeMap('style,class');\n\n// attributes that should be using props for binding\nvar acceptValue = makeMap('input,textarea,option,select,progress');\nvar mustUseProp = function (tag, type, attr) {\n return (\n (attr === 'value' && acceptValue(tag)) && type !== 'button' ||\n (attr === 'selected' && tag === 'option') ||\n (attr === 'checked' && tag === 'input') ||\n (attr === 'muted' && tag === 'video')\n )\n};\n\nvar isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');\n\nvar isValidContentEditableValue = makeMap('events,caret,typing,plaintext-only');\n\nvar convertEnumeratedValue = function (key, value) {\n return isFalsyAttrValue(value) || value === 'false'\n ? 'false'\n // allow arbitrary string value for contenteditable\n : key === 'contenteditable' && isValidContentEditableValue(value)\n ? value\n : 'true'\n};\n\nvar isBooleanAttr = makeMap(\n 'allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' +\n 'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' +\n 'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' +\n 'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' +\n 'required,reversed,scoped,seamless,selected,sortable,' +\n 'truespeed,typemustmatch,visible'\n);\n\nvar xlinkNS = 'http://www.w3.org/1999/xlink';\n\nvar isXlink = function (name) {\n return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink'\n};\n\nvar getXlinkProp = function (name) {\n return isXlink(name) ? name.slice(6, name.length) : ''\n};\n\nvar isFalsyAttrValue = function (val) {\n return val == null || val === false\n};\n\n/* */\n\nfunction genClassForVnode (vnode) {\n var data = vnode.data;\n var parentNode = vnode;\n var childNode = vnode;\n while (isDef(childNode.componentInstance)) {\n childNode = childNode.componentInstance._vnode;\n if (childNode && childNode.data) {\n data = mergeClassData(childNode.data, data);\n }\n }\n while (isDef(parentNode = parentNode.parent)) {\n if (parentNode && parentNode.data) {\n data = mergeClassData(data, parentNode.data);\n }\n }\n return renderClass(data.staticClass, data.class)\n}\n\nfunction mergeClassData (child, parent) {\n return {\n staticClass: concat(child.staticClass, parent.staticClass),\n class: isDef(child.class)\n ? [child.class, parent.class]\n : parent.class\n }\n}\n\nfunction renderClass (\n staticClass,\n dynamicClass\n) {\n if (isDef(staticClass) || isDef(dynamicClass)) {\n return concat(staticClass, stringifyClass(dynamicClass))\n }\n /* istanbul ignore next */\n return ''\n}\n\nfunction concat (a, b) {\n return a ? b ? (a + ' ' + b) : a : (b || '')\n}\n\nfunction stringifyClass (value) {\n if (Array.isArray(value)) {\n return stringifyArray(value)\n }\n if (isObject(value)) {\n return stringifyObject(value)\n }\n if (typeof value === 'string') {\n return value\n }\n /* istanbul ignore next */\n return ''\n}\n\nfunction stringifyArray (value) {\n var res = '';\n var stringified;\n for (var i = 0, l = value.length; i < l; i++) {\n if (isDef(stringified = stringifyClass(value[i])) && stringified !== '') {\n if (res) { res += ' '; }\n res += stringified;\n }\n }\n return res\n}\n\nfunction stringifyObject (value) {\n var res = '';\n for (var key in value) {\n if (value[key]) {\n if (res) { res += ' '; }\n res += key;\n }\n }\n return res\n}\n\n/* */\n\nvar namespaceMap = {\n svg: 'http://www.w3.org/2000/svg',\n math: 'http://www.w3.org/1998/Math/MathML'\n};\n\nvar isHTMLTag = makeMap(\n 'html,body,base,head,link,meta,style,title,' +\n 'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' +\n 'div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul,' +\n 'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' +\n 's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' +\n 'embed,object,param,source,canvas,script,noscript,del,ins,' +\n 'caption,col,colgroup,table,thead,tbody,td,th,tr,' +\n 'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' +\n 'output,progress,select,textarea,' +\n 'details,dialog,menu,menuitem,summary,' +\n 'content,element,shadow,template,blockquote,iframe,tfoot'\n);\n\n// this map is intentionally selective, only covering SVG elements that may\n// contain child elements.\nvar isSVG = makeMap(\n 'svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face,' +\n 'foreignobject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' +\n 'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view',\n true\n);\n\nvar isReservedTag = function (tag) {\n return isHTMLTag(tag) || isSVG(tag)\n};\n\nfunction getTagNamespace (tag) {\n if (isSVG(tag)) {\n return 'svg'\n }\n // basic support for MathML\n // note it doesn't support other MathML elements being component roots\n if (tag === 'math') {\n return 'math'\n }\n}\n\nvar unknownElementCache = Object.create(null);\nfunction isUnknownElement (tag) {\n /* istanbul ignore if */\n if (!inBrowser) {\n return true\n }\n if (isReservedTag(tag)) {\n return false\n }\n tag = tag.toLowerCase();\n /* istanbul ignore if */\n if (unknownElementCache[tag] != null) {\n return unknownElementCache[tag]\n }\n var el = document.createElement(tag);\n if (tag.indexOf('-') > -1) {\n // http://stackoverflow.com/a/28210364/1070244\n return (unknownElementCache[tag] = (\n el.constructor === window.HTMLUnknownElement ||\n el.constructor === window.HTMLElement\n ))\n } else {\n return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString()))\n }\n}\n\nvar isTextInputType = makeMap('text,number,password,search,email,tel,url');\n\n/* */\n\n/**\n * Query an element selector if it's not an element already.\n */\nfunction query (el) {\n if (typeof el === 'string') {\n var selected = document.querySelector(el);\n if (!selected) {\n process.env.NODE_ENV !== 'production' && warn(\n 'Cannot find element: ' + el\n );\n return document.createElement('div')\n }\n return selected\n } else {\n return el\n }\n}\n\n/* */\n\nfunction createElement$1 (tagName, vnode) {\n var elm = document.createElement(tagName);\n if (tagName !== 'select') {\n return elm\n }\n // false or null will remove the attribute but undefined will not\n if (vnode.data && vnode.data.attrs && vnode.data.attrs.multiple !== undefined) {\n elm.setAttribute('multiple', 'multiple');\n }\n return elm\n}\n\nfunction createElementNS (namespace, tagName) {\n return document.createElementNS(namespaceMap[namespace], tagName)\n}\n\nfunction createTextNode (text) {\n return document.createTextNode(text)\n}\n\nfunction createComment (text) {\n return document.createComment(text)\n}\n\nfunction insertBefore (parentNode, newNode, referenceNode) {\n parentNode.insertBefore(newNode, referenceNode);\n}\n\nfunction removeChild (node, child) {\n node.removeChild(child);\n}\n\nfunction appendChild (node, child) {\n node.appendChild(child);\n}\n\nfunction parentNode (node) {\n return node.parentNode\n}\n\nfunction nextSibling (node) {\n return node.nextSibling\n}\n\nfunction tagName (node) {\n return node.tagName\n}\n\nfunction setTextContent (node, text) {\n node.textContent = text;\n}\n\nfunction setStyleScope (node, scopeId) {\n node.setAttribute(scopeId, '');\n}\n\nvar nodeOps = /*#__PURE__*/Object.freeze({\n createElement: createElement$1,\n createElementNS: createElementNS,\n createTextNode: createTextNode,\n createComment: createComment,\n insertBefore: insertBefore,\n removeChild: removeChild,\n appendChild: appendChild,\n parentNode: parentNode,\n nextSibling: nextSibling,\n tagName: tagName,\n setTextContent: setTextContent,\n setStyleScope: setStyleScope\n});\n\n/* */\n\nvar ref = {\n create: function create (_, vnode) {\n registerRef(vnode);\n },\n update: function update (oldVnode, vnode) {\n if (oldVnode.data.ref !== vnode.data.ref) {\n registerRef(oldVnode, true);\n registerRef(vnode);\n }\n },\n destroy: function destroy (vnode) {\n registerRef(vnode, true);\n }\n};\n\nfunction registerRef (vnode, isRemoval) {\n var key = vnode.data.ref;\n if (!isDef(key)) { return }\n\n var vm = vnode.context;\n var ref = vnode.componentInstance || vnode.elm;\n var refs = vm.$refs;\n if (isRemoval) {\n if (Array.isArray(refs[key])) {\n remove(refs[key], ref);\n } else if (refs[key] === ref) {\n refs[key] = undefined;\n }\n } else {\n if (vnode.data.refInFor) {\n if (!Array.isArray(refs[key])) {\n refs[key] = [ref];\n } else if (refs[key].indexOf(ref) < 0) {\n // $flow-disable-line\n refs[key].push(ref);\n }\n } else {\n refs[key] = ref;\n }\n }\n}\n\n/**\n * Virtual DOM patching algorithm based on Snabbdom by\n * Simon Friis Vindum (@paldepind)\n * Licensed under the MIT License\n * https://github.com/paldepind/snabbdom/blob/master/LICENSE\n *\n * modified by Evan You (@yyx990803)\n *\n * Not type-checking this because this file is perf-critical and the cost\n * of making flow understand it is not worth it.\n */\n\nvar emptyNode = new VNode('', {}, []);\n\nvar hooks = ['create', 'activate', 'update', 'remove', 'destroy'];\n\nfunction sameVnode (a, b) {\n return (\n a.key === b.key &&\n a.asyncFactory === b.asyncFactory && (\n (\n a.tag === b.tag &&\n a.isComment === b.isComment &&\n isDef(a.data) === isDef(b.data) &&\n sameInputType(a, b)\n ) || (\n isTrue(a.isAsyncPlaceholder) &&\n isUndef(b.asyncFactory.error)\n )\n )\n )\n}\n\nfunction sameInputType (a, b) {\n if (a.tag !== 'input') { return true }\n var i;\n var typeA = isDef(i = a.data) && isDef(i = i.attrs) && i.type;\n var typeB = isDef(i = b.data) && isDef(i = i.attrs) && i.type;\n return typeA === typeB || isTextInputType(typeA) && isTextInputType(typeB)\n}\n\nfunction createKeyToOldIdx (children, beginIdx, endIdx) {\n var i, key;\n var map = {};\n for (i = beginIdx; i <= endIdx; ++i) {\n key = children[i].key;\n if (isDef(key)) { map[key] = i; }\n }\n return map\n}\n\nfunction createPatchFunction (backend) {\n var i, j;\n var cbs = {};\n\n var modules = backend.modules;\n var nodeOps = backend.nodeOps;\n\n for (i = 0; i < hooks.length; ++i) {\n cbs[hooks[i]] = [];\n for (j = 0; j < modules.length; ++j) {\n if (isDef(modules[j][hooks[i]])) {\n cbs[hooks[i]].push(modules[j][hooks[i]]);\n }\n }\n }\n\n function emptyNodeAt (elm) {\n return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm)\n }\n\n function createRmCb (childElm, listeners) {\n function remove$$1 () {\n if (--remove$$1.listeners === 0) {\n removeNode(childElm);\n }\n }\n remove$$1.listeners = listeners;\n return remove$$1\n }\n\n function removeNode (el) {\n var parent = nodeOps.parentNode(el);\n // element may have already been removed due to v-html / v-text\n if (isDef(parent)) {\n nodeOps.removeChild(parent, el);\n }\n }\n\n function isUnknownElement$$1 (vnode, inVPre) {\n return (\n !inVPre &&\n !vnode.ns &&\n !(\n config.ignoredElements.length &&\n config.ignoredElements.some(function (ignore) {\n return isRegExp(ignore)\n ? ignore.test(vnode.tag)\n : ignore === vnode.tag\n })\n ) &&\n config.isUnknownElement(vnode.tag)\n )\n }\n\n var creatingElmInVPre = 0;\n\n function createElm (\n vnode,\n insertedVnodeQueue,\n parentElm,\n refElm,\n nested,\n ownerArray,\n index\n ) {\n if (isDef(vnode.elm) && isDef(ownerArray)) {\n // This vnode was used in a previous render!\n // now it's used as a new node, overwriting its elm would cause\n // potential patch errors down the road when it's used as an insertion\n // reference node. Instead, we clone the node on-demand before creating\n // associated DOM element for it.\n vnode = ownerArray[index] = cloneVNode(vnode);\n }\n\n vnode.isRootInsert = !nested; // for transition enter check\n if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {\n return\n }\n\n var data = vnode.data;\n var children = vnode.children;\n var tag = vnode.tag;\n if (isDef(tag)) {\n if (process.env.NODE_ENV !== 'production') {\n if (data && data.pre) {\n creatingElmInVPre++;\n }\n if (isUnknownElement$$1(vnode, creatingElmInVPre)) {\n warn(\n 'Unknown custom element: <' + tag + '> - did you ' +\n 'register the component correctly? For recursive components, ' +\n 'make sure to provide the \"name\" option.',\n vnode.context\n );\n }\n }\n\n vnode.elm = vnode.ns\n ? nodeOps.createElementNS(vnode.ns, tag)\n : nodeOps.createElement(tag, vnode);\n setScope(vnode);\n\n /* istanbul ignore if */\n {\n createChildren(vnode, children, insertedVnodeQueue);\n if (isDef(data)) {\n invokeCreateHooks(vnode, insertedVnodeQueue);\n }\n insert(parentElm, vnode.elm, refElm);\n }\n\n if (process.env.NODE_ENV !== 'production' && data && data.pre) {\n creatingElmInVPre--;\n }\n } else if (isTrue(vnode.isComment)) {\n vnode.elm = nodeOps.createComment(vnode.text);\n insert(parentElm, vnode.elm, refElm);\n } else {\n vnode.elm = nodeOps.createTextNode(vnode.text);\n insert(parentElm, vnode.elm, refElm);\n }\n }\n\n function createComponent (vnode, insertedVnodeQueue, parentElm, refElm) {\n var i = vnode.data;\n if (isDef(i)) {\n var isReactivated = isDef(vnode.componentInstance) && i.keepAlive;\n if (isDef(i = i.hook) && isDef(i = i.init)) {\n i(vnode, false /* hydrating */);\n }\n // after calling the init hook, if the vnode is a child component\n // it should've created a child instance and mounted it. the child\n // component also has set the placeholder vnode's elm.\n // in that case we can just return the element and be done.\n if (isDef(vnode.componentInstance)) {\n initComponent(vnode, insertedVnodeQueue);\n insert(parentElm, vnode.elm, refElm);\n if (isTrue(isReactivated)) {\n reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm);\n }\n return true\n }\n }\n }\n\n function initComponent (vnode, insertedVnodeQueue) {\n if (isDef(vnode.data.pendingInsert)) {\n insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert);\n vnode.data.pendingInsert = null;\n }\n vnode.elm = vnode.componentInstance.$el;\n if (isPatchable(vnode)) {\n invokeCreateHooks(vnode, insertedVnodeQueue);\n setScope(vnode);\n } else {\n // empty component root.\n // skip all element-related modules except for ref (#3455)\n registerRef(vnode);\n // make sure to invoke the insert hook\n insertedVnodeQueue.push(vnode);\n }\n }\n\n function reactivateComponent (vnode, insertedVnodeQueue, parentElm, refElm) {\n var i;\n // hack for #4339: a reactivated component with inner transition\n // does not trigger because the inner node's created hooks are not called\n // again. It's not ideal to involve module-specific logic in here but\n // there doesn't seem to be a better way to do it.\n var innerNode = vnode;\n while (innerNode.componentInstance) {\n innerNode = innerNode.componentInstance._vnode;\n if (isDef(i = innerNode.data) && isDef(i = i.transition)) {\n for (i = 0; i < cbs.activate.length; ++i) {\n cbs.activate[i](emptyNode, innerNode);\n }\n insertedVnodeQueue.push(innerNode);\n break\n }\n }\n // unlike a newly created component,\n // a reactivated keep-alive component doesn't insert itself\n insert(parentElm, vnode.elm, refElm);\n }\n\n function insert (parent, elm, ref$$1) {\n if (isDef(parent)) {\n if (isDef(ref$$1)) {\n if (nodeOps.parentNode(ref$$1) === parent) {\n nodeOps.insertBefore(parent, elm, ref$$1);\n }\n } else {\n nodeOps.appendChild(parent, elm);\n }\n }\n }\n\n function createChildren (vnode, children, insertedVnodeQueue) {\n if (Array.isArray(children)) {\n if (process.env.NODE_ENV !== 'production') {\n checkDuplicateKeys(children);\n }\n for (var i = 0; i < children.length; ++i) {\n createElm(children[i], insertedVnodeQueue, vnode.elm, null, true, children, i);\n }\n } else if (isPrimitive(vnode.text)) {\n nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(String(vnode.text)));\n }\n }\n\n function isPatchable (vnode) {\n while (vnode.componentInstance) {\n vnode = vnode.componentInstance._vnode;\n }\n return isDef(vnode.tag)\n }\n\n function invokeCreateHooks (vnode, insertedVnodeQueue) {\n for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {\n cbs.create[i$1](emptyNode, vnode);\n }\n i = vnode.data.hook; // Reuse variable\n if (isDef(i)) {\n if (isDef(i.create)) { i.create(emptyNode, vnode); }\n if (isDef(i.insert)) { insertedVnodeQueue.push(vnode); }\n }\n }\n\n // set scope id attribute for scoped CSS.\n // this is implemented as a special case to avoid the overhead\n // of going through the normal attribute patching process.\n function setScope (vnode) {\n var i;\n if (isDef(i = vnode.fnScopeId)) {\n nodeOps.setStyleScope(vnode.elm, i);\n } else {\n var ancestor = vnode;\n while (ancestor) {\n if (isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) {\n nodeOps.setStyleScope(vnode.elm, i);\n }\n ancestor = ancestor.parent;\n }\n }\n // for slot content they should also get the scopeId from the host instance.\n if (isDef(i = activeInstance) &&\n i !== vnode.context &&\n i !== vnode.fnContext &&\n isDef(i = i.$options._scopeId)\n ) {\n nodeOps.setStyleScope(vnode.elm, i);\n }\n }\n\n function addVnodes (parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {\n for (; startIdx <= endIdx; ++startIdx) {\n createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm, false, vnodes, startIdx);\n }\n }\n\n function invokeDestroyHook (vnode) {\n var i, j;\n var data = vnode.data;\n if (isDef(data)) {\n if (isDef(i = data.hook) && isDef(i = i.destroy)) { i(vnode); }\n for (i = 0; i < cbs.destroy.length; ++i) { cbs.destroy[i](vnode); }\n }\n if (isDef(i = vnode.children)) {\n for (j = 0; j < vnode.children.length; ++j) {\n invokeDestroyHook(vnode.children[j]);\n }\n }\n }\n\n function removeVnodes (vnodes, startIdx, endIdx) {\n for (; startIdx <= endIdx; ++startIdx) {\n var ch = vnodes[startIdx];\n if (isDef(ch)) {\n if (isDef(ch.tag)) {\n removeAndInvokeRemoveHook(ch);\n invokeDestroyHook(ch);\n } else { // Text node\n removeNode(ch.elm);\n }\n }\n }\n }\n\n function removeAndInvokeRemoveHook (vnode, rm) {\n if (isDef(rm) || isDef(vnode.data)) {\n var i;\n var listeners = cbs.remove.length + 1;\n if (isDef(rm)) {\n // we have a recursively passed down rm callback\n // increase the listeners count\n rm.listeners += listeners;\n } else {\n // directly removing\n rm = createRmCb(vnode.elm, listeners);\n }\n // recursively invoke hooks on child component root node\n if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {\n removeAndInvokeRemoveHook(i, rm);\n }\n for (i = 0; i < cbs.remove.length; ++i) {\n cbs.remove[i](vnode, rm);\n }\n if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {\n i(vnode, rm);\n } else {\n rm();\n }\n } else {\n removeNode(vnode.elm);\n }\n }\n\n function updateChildren (parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {\n var oldStartIdx = 0;\n var newStartIdx = 0;\n var oldEndIdx = oldCh.length - 1;\n var oldStartVnode = oldCh[0];\n var oldEndVnode = oldCh[oldEndIdx];\n var newEndIdx = newCh.length - 1;\n var newStartVnode = newCh[0];\n var newEndVnode = newCh[newEndIdx];\n var oldKeyToIdx, idxInOld, vnodeToMove, refElm;\n\n // removeOnly is a special flag used only by \n // to ensure removed elements stay in correct relative positions\n // during leaving transitions\n var canMove = !removeOnly;\n\n if (process.env.NODE_ENV !== 'production') {\n checkDuplicateKeys(newCh);\n }\n\n while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {\n if (isUndef(oldStartVnode)) {\n oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left\n } else if (isUndef(oldEndVnode)) {\n oldEndVnode = oldCh[--oldEndIdx];\n } else if (sameVnode(oldStartVnode, newStartVnode)) {\n patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);\n oldStartVnode = oldCh[++oldStartIdx];\n newStartVnode = newCh[++newStartIdx];\n } else if (sameVnode(oldEndVnode, newEndVnode)) {\n patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);\n oldEndVnode = oldCh[--oldEndIdx];\n newEndVnode = newCh[--newEndIdx];\n } else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right\n patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);\n canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));\n oldStartVnode = oldCh[++oldStartIdx];\n newEndVnode = newCh[--newEndIdx];\n } else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left\n patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);\n canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);\n oldEndVnode = oldCh[--oldEndIdx];\n newStartVnode = newCh[++newStartIdx];\n } else {\n if (isUndef(oldKeyToIdx)) { oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx); }\n idxInOld = isDef(newStartVnode.key)\n ? oldKeyToIdx[newStartVnode.key]\n : findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx);\n if (isUndef(idxInOld)) { // New element\n createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);\n } else {\n vnodeToMove = oldCh[idxInOld];\n if (sameVnode(vnodeToMove, newStartVnode)) {\n patchVnode(vnodeToMove, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);\n oldCh[idxInOld] = undefined;\n canMove && nodeOps.insertBefore(parentElm, vnodeToMove.elm, oldStartVnode.elm);\n } else {\n // same key but different element. treat as new element\n createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);\n }\n }\n newStartVnode = newCh[++newStartIdx];\n }\n }\n if (oldStartIdx > oldEndIdx) {\n refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;\n addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);\n } else if (newStartIdx > newEndIdx) {\n removeVnodes(oldCh, oldStartIdx, oldEndIdx);\n }\n }\n\n function checkDuplicateKeys (children) {\n var seenKeys = {};\n for (var i = 0; i < children.length; i++) {\n var vnode = children[i];\n var key = vnode.key;\n if (isDef(key)) {\n if (seenKeys[key]) {\n warn(\n (\"Duplicate keys detected: '\" + key + \"'. This may cause an update error.\"),\n vnode.context\n );\n } else {\n seenKeys[key] = true;\n }\n }\n }\n }\n\n function findIdxInOld (node, oldCh, start, end) {\n for (var i = start; i < end; i++) {\n var c = oldCh[i];\n if (isDef(c) && sameVnode(node, c)) { return i }\n }\n }\n\n function patchVnode (\n oldVnode,\n vnode,\n insertedVnodeQueue,\n ownerArray,\n index,\n removeOnly\n ) {\n if (oldVnode === vnode) {\n return\n }\n\n if (isDef(vnode.elm) && isDef(ownerArray)) {\n // clone reused vnode\n vnode = ownerArray[index] = cloneVNode(vnode);\n }\n\n var elm = vnode.elm = oldVnode.elm;\n\n if (isTrue(oldVnode.isAsyncPlaceholder)) {\n if (isDef(vnode.asyncFactory.resolved)) {\n hydrate(oldVnode.elm, vnode, insertedVnodeQueue);\n } else {\n vnode.isAsyncPlaceholder = true;\n }\n return\n }\n\n // reuse element for static trees.\n // note we only do this if the vnode is cloned -\n // if the new node is not cloned it means the render functions have been\n // reset by the hot-reload-api and we need to do a proper re-render.\n if (isTrue(vnode.isStatic) &&\n isTrue(oldVnode.isStatic) &&\n vnode.key === oldVnode.key &&\n (isTrue(vnode.isCloned) || isTrue(vnode.isOnce))\n ) {\n vnode.componentInstance = oldVnode.componentInstance;\n return\n }\n\n var i;\n var data = vnode.data;\n if (isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) {\n i(oldVnode, vnode);\n }\n\n var oldCh = oldVnode.children;\n var ch = vnode.children;\n if (isDef(data) && isPatchable(vnode)) {\n for (i = 0; i < cbs.update.length; ++i) { cbs.update[i](oldVnode, vnode); }\n if (isDef(i = data.hook) && isDef(i = i.update)) { i(oldVnode, vnode); }\n }\n if (isUndef(vnode.text)) {\n if (isDef(oldCh) && isDef(ch)) {\n if (oldCh !== ch) { updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly); }\n } else if (isDef(ch)) {\n if (process.env.NODE_ENV !== 'production') {\n checkDuplicateKeys(ch);\n }\n if (isDef(oldVnode.text)) { nodeOps.setTextContent(elm, ''); }\n addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);\n } else if (isDef(oldCh)) {\n removeVnodes(oldCh, 0, oldCh.length - 1);\n } else if (isDef(oldVnode.text)) {\n nodeOps.setTextContent(elm, '');\n }\n } else if (oldVnode.text !== vnode.text) {\n nodeOps.setTextContent(elm, vnode.text);\n }\n if (isDef(data)) {\n if (isDef(i = data.hook) && isDef(i = i.postpatch)) { i(oldVnode, vnode); }\n }\n }\n\n function invokeInsertHook (vnode, queue, initial) {\n // delay insert hooks for component root nodes, invoke them after the\n // element is really inserted\n if (isTrue(initial) && isDef(vnode.parent)) {\n vnode.parent.data.pendingInsert = queue;\n } else {\n for (var i = 0; i < queue.length; ++i) {\n queue[i].data.hook.insert(queue[i]);\n }\n }\n }\n\n var hydrationBailed = false;\n // list of modules that can skip create hook during hydration because they\n // are already rendered on the client or has no need for initialization\n // Note: style is excluded because it relies on initial clone for future\n // deep updates (#7063).\n var isRenderedModule = makeMap('attrs,class,staticClass,staticStyle,key');\n\n // Note: this is a browser-only function so we can assume elms are DOM nodes.\n function hydrate (elm, vnode, insertedVnodeQueue, inVPre) {\n var i;\n var tag = vnode.tag;\n var data = vnode.data;\n var children = vnode.children;\n inVPre = inVPre || (data && data.pre);\n vnode.elm = elm;\n\n if (isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) {\n vnode.isAsyncPlaceholder = true;\n return true\n }\n // assert node match\n if (process.env.NODE_ENV !== 'production') {\n if (!assertNodeMatch(elm, vnode, inVPre)) {\n return false\n }\n }\n if (isDef(data)) {\n if (isDef(i = data.hook) && isDef(i = i.init)) { i(vnode, true /* hydrating */); }\n if (isDef(i = vnode.componentInstance)) {\n // child component. it should have hydrated its own tree.\n initComponent(vnode, insertedVnodeQueue);\n return true\n }\n }\n if (isDef(tag)) {\n if (isDef(children)) {\n // empty element, allow client to pick up and populate children\n if (!elm.hasChildNodes()) {\n createChildren(vnode, children, insertedVnodeQueue);\n } else {\n // v-html and domProps: innerHTML\n if (isDef(i = data) && isDef(i = i.domProps) && isDef(i = i.innerHTML)) {\n if (i !== elm.innerHTML) {\n /* istanbul ignore if */\n if (process.env.NODE_ENV !== 'production' &&\n typeof console !== 'undefined' &&\n !hydrationBailed\n ) {\n hydrationBailed = true;\n console.warn('Parent: ', elm);\n console.warn('server innerHTML: ', i);\n console.warn('client innerHTML: ', elm.innerHTML);\n }\n return false\n }\n } else {\n // iterate and compare children lists\n var childrenMatch = true;\n var childNode = elm.firstChild;\n for (var i$1 = 0; i$1 < children.length; i$1++) {\n if (!childNode || !hydrate(childNode, children[i$1], insertedVnodeQueue, inVPre)) {\n childrenMatch = false;\n break\n }\n childNode = childNode.nextSibling;\n }\n // if childNode is not null, it means the actual childNodes list is\n // longer than the virtual children list.\n if (!childrenMatch || childNode) {\n /* istanbul ignore if */\n if (process.env.NODE_ENV !== 'production' &&\n typeof console !== 'undefined' &&\n !hydrationBailed\n ) {\n hydrationBailed = true;\n console.warn('Parent: ', elm);\n console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);\n }\n return false\n }\n }\n }\n }\n if (isDef(data)) {\n var fullInvoke = false;\n for (var key in data) {\n if (!isRenderedModule(key)) {\n fullInvoke = true;\n invokeCreateHooks(vnode, insertedVnodeQueue);\n break\n }\n }\n if (!fullInvoke && data['class']) {\n // ensure collecting deps for deep class bindings for future updates\n traverse(data['class']);\n }\n }\n } else if (elm.data !== vnode.text) {\n elm.data = vnode.text;\n }\n return true\n }\n\n function assertNodeMatch (node, vnode, inVPre) {\n if (isDef(vnode.tag)) {\n return vnode.tag.indexOf('vue-component') === 0 || (\n !isUnknownElement$$1(vnode, inVPre) &&\n vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase())\n )\n } else {\n return node.nodeType === (vnode.isComment ? 8 : 3)\n }\n }\n\n return function patch (oldVnode, vnode, hydrating, removeOnly) {\n if (isUndef(vnode)) {\n if (isDef(oldVnode)) { invokeDestroyHook(oldVnode); }\n return\n }\n\n var isInitialPatch = false;\n var insertedVnodeQueue = [];\n\n if (isUndef(oldVnode)) {\n // empty mount (likely as component), create new root element\n isInitialPatch = true;\n createElm(vnode, insertedVnodeQueue);\n } else {\n var isRealElement = isDef(oldVnode.nodeType);\n if (!isRealElement && sameVnode(oldVnode, vnode)) {\n // patch existing root node\n patchVnode(oldVnode, vnode, insertedVnodeQueue, null, null, removeOnly);\n } else {\n if (isRealElement) {\n // mounting to a real element\n // check if this is server-rendered content and if we can perform\n // a successful hydration.\n if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {\n oldVnode.removeAttribute(SSR_ATTR);\n hydrating = true;\n }\n if (isTrue(hydrating)) {\n if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {\n invokeInsertHook(vnode, insertedVnodeQueue, true);\n return oldVnode\n } else if (process.env.NODE_ENV !== 'production') {\n warn(\n 'The client-side rendered virtual DOM tree is not matching ' +\n 'server-rendered content. This is likely caused by incorrect ' +\n 'HTML markup, for example nesting block-level elements inside ' +\n ', or missing
. Bailing hydration and performing ' +\n 'full client-side render.'\n );\n }\n }\n // either not server-rendered, or hydration failed.\n // create an empty node and replace it\n oldVnode = emptyNodeAt(oldVnode);\n }\n\n // replacing existing element\n var oldElm = oldVnode.elm;\n var parentElm = nodeOps.parentNode(oldElm);\n\n // create new node\n createElm(\n vnode,\n insertedVnodeQueue,\n // extremely rare edge case: do not insert if old element is in a\n // leaving transition. Only happens when combining transition +\n // keep-alive + HOCs. (#4590)\n oldElm._leaveCb ? null : parentElm,\n nodeOps.nextSibling(oldElm)\n );\n\n // update parent placeholder node element, recursively\n if (isDef(vnode.parent)) {\n var ancestor = vnode.parent;\n var patchable = isPatchable(vnode);\n while (ancestor) {\n for (var i = 0; i < cbs.destroy.length; ++i) {\n cbs.destroy[i](ancestor);\n }\n ancestor.elm = vnode.elm;\n if (patchable) {\n for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {\n cbs.create[i$1](emptyNode, ancestor);\n }\n // #6513\n // invoke insert hooks that may have been merged by create hooks.\n // e.g. for directives that uses the \"inserted\" hook.\n var insert = ancestor.data.hook.insert;\n if (insert.merged) {\n // start at index 1 to avoid re-invoking component mounted hook\n for (var i$2 = 1; i$2 < insert.fns.length; i$2++) {\n insert.fns[i$2]();\n }\n }\n } else {\n registerRef(ancestor);\n }\n ancestor = ancestor.parent;\n }\n }\n\n // destroy old node\n if (isDef(parentElm)) {\n removeVnodes([oldVnode], 0, 0);\n } else if (isDef(oldVnode.tag)) {\n invokeDestroyHook(oldVnode);\n }\n }\n }\n\n invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);\n return vnode.elm\n }\n}\n\n/* */\n\nvar directives = {\n create: updateDirectives,\n update: updateDirectives,\n destroy: function unbindDirectives (vnode) {\n updateDirectives(vnode, emptyNode);\n }\n};\n\nfunction updateDirectives (oldVnode, vnode) {\n if (oldVnode.data.directives || vnode.data.directives) {\n _update(oldVnode, vnode);\n }\n}\n\nfunction _update (oldVnode, vnode) {\n var isCreate = oldVnode === emptyNode;\n var isDestroy = vnode === emptyNode;\n var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context);\n var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context);\n\n var dirsWithInsert = [];\n var dirsWithPostpatch = [];\n\n var key, oldDir, dir;\n for (key in newDirs) {\n oldDir = oldDirs[key];\n dir = newDirs[key];\n if (!oldDir) {\n // new directive, bind\n callHook$1(dir, 'bind', vnode, oldVnode);\n if (dir.def && dir.def.inserted) {\n dirsWithInsert.push(dir);\n }\n } else {\n // existing directive, update\n dir.oldValue = oldDir.value;\n dir.oldArg = oldDir.arg;\n callHook$1(dir, 'update', vnode, oldVnode);\n if (dir.def && dir.def.componentUpdated) {\n dirsWithPostpatch.push(dir);\n }\n }\n }\n\n if (dirsWithInsert.length) {\n var callInsert = function () {\n for (var i = 0; i < dirsWithInsert.length; i++) {\n callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode);\n }\n };\n if (isCreate) {\n mergeVNodeHook(vnode, 'insert', callInsert);\n } else {\n callInsert();\n }\n }\n\n if (dirsWithPostpatch.length) {\n mergeVNodeHook(vnode, 'postpatch', function () {\n for (var i = 0; i < dirsWithPostpatch.length; i++) {\n callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);\n }\n });\n }\n\n if (!isCreate) {\n for (key in oldDirs) {\n if (!newDirs[key]) {\n // no longer present, unbind\n callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy);\n }\n }\n }\n}\n\nvar emptyModifiers = Object.create(null);\n\nfunction normalizeDirectives$1 (\n dirs,\n vm\n) {\n var res = Object.create(null);\n if (!dirs) {\n // $flow-disable-line\n return res\n }\n var i, dir;\n for (i = 0; i < dirs.length; i++) {\n dir = dirs[i];\n if (!dir.modifiers) {\n // $flow-disable-line\n dir.modifiers = emptyModifiers;\n }\n res[getRawDirName(dir)] = dir;\n dir.def = resolveAsset(vm.$options, 'directives', dir.name, true);\n }\n // $flow-disable-line\n return res\n}\n\nfunction getRawDirName (dir) {\n return dir.rawName || ((dir.name) + \".\" + (Object.keys(dir.modifiers || {}).join('.')))\n}\n\nfunction callHook$1 (dir, hook, vnode, oldVnode, isDestroy) {\n var fn = dir.def && dir.def[hook];\n if (fn) {\n try {\n fn(vnode.elm, dir, vnode, oldVnode, isDestroy);\n } catch (e) {\n handleError(e, vnode.context, (\"directive \" + (dir.name) + \" \" + hook + \" hook\"));\n }\n }\n}\n\nvar baseModules = [\n ref,\n directives\n];\n\n/* */\n\nfunction updateAttrs (oldVnode, vnode) {\n var opts = vnode.componentOptions;\n if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {\n return\n }\n if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {\n return\n }\n var key, cur, old;\n var elm = vnode.elm;\n var oldAttrs = oldVnode.data.attrs || {};\n var attrs = vnode.data.attrs || {};\n // clone observed objects, as the user probably wants to mutate it\n if (isDef(attrs.__ob__)) {\n attrs = vnode.data.attrs = extend({}, attrs);\n }\n\n for (key in attrs) {\n cur = attrs[key];\n old = oldAttrs[key];\n if (old !== cur) {\n setAttr(elm, key, cur, vnode.data.pre);\n }\n }\n // #4391: in IE9, setting type can reset value for input[type=radio]\n // #6666: IE/Edge forces progress value down to 1 before setting a max\n /* istanbul ignore if */\n if ((isIE || isEdge) && attrs.value !== oldAttrs.value) {\n setAttr(elm, 'value', attrs.value);\n }\n for (key in oldAttrs) {\n if (isUndef(attrs[key])) {\n if (isXlink(key)) {\n elm.removeAttributeNS(xlinkNS, getXlinkProp(key));\n } else if (!isEnumeratedAttr(key)) {\n elm.removeAttribute(key);\n }\n }\n }\n}\n\nfunction setAttr (el, key, value, isInPre) {\n if (isInPre || el.tagName.indexOf('-') > -1) {\n baseSetAttr(el, key, value);\n } else if (isBooleanAttr(key)) {\n // set attribute for blank value\n // e.g. \n if (isFalsyAttrValue(value)) {\n el.removeAttribute(key);\n } else {\n // technically allowfullscreen is a boolean attribute for