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 * Shims a minimal AbortSignal (copied from Remote Config).\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 AnalyticsAbortSignal = /** @class */ (function () {\r\n function AnalyticsAbortSignal() {\r\n this.listeners = [];\r\n }\r\n AnalyticsAbortSignal.prototype.addEventListener = function (listener) {\r\n this.listeners.push(listener);\r\n };\r\n AnalyticsAbortSignal.prototype.abort = function () {\r\n this.listeners.forEach(function (listener) { return listener(); });\r\n };\r\n return AnalyticsAbortSignal;\r\n}());\n\n/**\r\n * @license\r\n * Copyright 2020 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 validateIndexedDB() {\r\n return __awaiter(this, void 0, void 0, function () {\r\n var e_1;\r\n return __generator(this, function (_a) {\r\n switch (_a.label) {\r\n case 0:\r\n if (!!isIndexedDBAvailable()) return [3 /*break*/, 1];\r\n logger.warn(ERROR_FACTORY.create(\"indexeddb-unavailable\" /* INDEXEDDB_UNAVAILABLE */, {\r\n errorInfo: 'IndexedDB is not available in this environment.'\r\n }).message);\r\n return [2 /*return*/, false];\r\n case 1:\r\n _a.trys.push([1, 3, , 4]);\r\n return [4 /*yield*/, validateIndexedDBOpenable()];\r\n case 2:\r\n _a.sent();\r\n return [3 /*break*/, 4];\r\n case 3:\r\n e_1 = _a.sent();\r\n logger.warn(ERROR_FACTORY.create(\"indexeddb-unavailable\" /* INDEXEDDB_UNAVAILABLE */, {\r\n errorInfo: e_1\r\n }).message);\r\n return [2 /*return*/, false];\r\n case 4: return [2 /*return*/, true];\r\n }\r\n });\r\n });\r\n}\r\n/**\r\n * Initialize the analytics instance in gtag.js by calling config command with fid.\r\n *\r\n * NOTE: We combine analytics initialization and setting fid together because we want fid to be\r\n * part of the `page_view` event that's sent during the initialization\r\n * @param app Firebase app\r\n * @param gtagCore The gtag function that's not wrapped.\r\n * @param dynamicConfigPromisesList Array of all dynamic config promises.\r\n * @param measurementIdToAppId Maps measurementID to appID.\r\n * @param installations FirebaseInstallations instance.\r\n *\r\n * @returns Measurement ID.\r\n */\r\nfunction initializeIds(app, dynamicConfigPromisesList, measurementIdToAppId, installations, gtagCore, dataLayerName) {\r\n return __awaiter(this, void 0, void 0, function () {\r\n var dynamicConfigPromise, fidPromise, _a, dynamicConfig, fid, configProperties;\r\n var _b;\r\n return __generator(this, function (_c) {\r\n switch (_c.label) {\r\n case 0:\r\n dynamicConfigPromise = fetchDynamicConfigWithRetry(app);\r\n // Once fetched, map measurementIds to appId, for ease of lookup in wrapped gtag function.\r\n dynamicConfigPromise\r\n .then(function (config) {\r\n measurementIdToAppId[config.measurementId] = config.appId;\r\n if (app.options.measurementId &&\r\n config.measurementId !== app.options.measurementId) {\r\n logger.warn(\"The measurement ID in the local Firebase config (\" + app.options.measurementId + \")\" +\r\n (\" does not match the measurement ID fetched from the server (\" + config.measurementId + \").\") +\r\n \" To ensure analytics events are always sent to the correct Analytics property,\" +\r\n \" update the\" +\r\n \" measurement ID field in the local config or remove it from the local config.\");\r\n }\r\n })\r\n .catch(function (e) { return logger.error(e); });\r\n // Add to list to track state of all dynamic config promises.\r\n dynamicConfigPromisesList.push(dynamicConfigPromise);\r\n fidPromise = validateIndexedDB().then(function (envIsValid) {\r\n if (envIsValid) {\r\n return installations.getId();\r\n }\r\n else {\r\n return undefined;\r\n }\r\n });\r\n return [4 /*yield*/, Promise.all([\r\n dynamicConfigPromise,\r\n fidPromise\r\n ])];\r\n case 1:\r\n _a = _c.sent(), dynamicConfig = _a[0], fid = _a[1];\r\n // Detect if user has already put the gtag \r\n *\r\n * \r\n * , or missing