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Diffstat (limited to 'frontend-old/node_modules/@firebase/remote-config/dist/index.cjs.js')
| -rw-r--r-- | frontend-old/node_modules/@firebase/remote-config/dist/index.cjs.js | 2137 |
1 files changed, 0 insertions, 2137 deletions
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/index.cjs.js b/frontend-old/node_modules/@firebase/remote-config/dist/index.cjs.js deleted file mode 100644 index dacd9fd..0000000 --- a/frontend-old/node_modules/@firebase/remote-config/dist/index.cjs.js +++ /dev/null @@ -1,2137 +0,0 @@ -'use strict'; - -Object.defineProperty(exports, '__esModule', { value: true }); - -var app = require('@firebase/app'); -var util = require('@firebase/util'); -var component = require('@firebase/component'); -var logger = require('@firebase/logger'); -require('@firebase/installations'); - -const name = "@firebase/remote-config"; -const version = "0.7.0"; - -/** - * @license - * Copyright 2019 Google LLC - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -/** - * Shims a minimal AbortSignal. - * - * <p>AbortController's AbortSignal conveniently decouples fetch timeout logic from other aspects - * of networking, such as retries. Firebase doesn't use AbortController enough to justify a - * polyfill recommendation, like we do with the Fetch API, but this minimal shim can easily be - * swapped out if/when we do. - */ -class RemoteConfigAbortSignal { - constructor() { - this.listeners = []; - } - addEventListener(listener) { - this.listeners.push(listener); - } - abort() { - this.listeners.forEach(listener => listener()); - } -} - -/** - * @license - * Copyright 2020 Google LLC - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -const RC_COMPONENT_NAME = 'remote-config'; -const RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS = 100; -const RC_CUSTOM_SIGNAL_KEY_MAX_LENGTH = 250; -const RC_CUSTOM_SIGNAL_VALUE_MAX_LENGTH = 500; - -/** - * @license - * Copyright 2019 Google LLC - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -const ERROR_DESCRIPTION_MAP = { - ["already-initialized" /* ErrorCode.ALREADY_INITIALIZED */]: 'Remote Config already initialized', - ["registration-window" /* ErrorCode.REGISTRATION_WINDOW */]: 'Undefined window object. This SDK only supports usage in a browser environment.', - ["registration-project-id" /* ErrorCode.REGISTRATION_PROJECT_ID */]: 'Undefined project identifier. Check Firebase app initialization.', - ["registration-api-key" /* ErrorCode.REGISTRATION_API_KEY */]: 'Undefined API key. Check Firebase app initialization.', - ["registration-app-id" /* ErrorCode.REGISTRATION_APP_ID */]: 'Undefined app identifier. Check Firebase app initialization.', - ["storage-open" /* ErrorCode.STORAGE_OPEN */]: 'Error thrown when opening storage. Original error: {$originalErrorMessage}.', - ["storage-get" /* ErrorCode.STORAGE_GET */]: 'Error thrown when reading from storage. Original error: {$originalErrorMessage}.', - ["storage-set" /* ErrorCode.STORAGE_SET */]: 'Error thrown when writing to storage. Original error: {$originalErrorMessage}.', - ["storage-delete" /* ErrorCode.STORAGE_DELETE */]: 'Error thrown when deleting from storage. Original error: {$originalErrorMessage}.', - ["fetch-client-network" /* ErrorCode.FETCH_NETWORK */]: 'Fetch client failed to connect to a network. Check Internet connection.' + - ' Original error: {$originalErrorMessage}.', - ["fetch-timeout" /* ErrorCode.FETCH_TIMEOUT */]: 'The config fetch request timed out. ' + - ' Configure timeout using "fetchTimeoutMillis" SDK setting.', - ["fetch-throttle" /* ErrorCode.FETCH_THROTTLE */]: 'The config fetch request timed out while in an exponential backoff state.' + - ' Configure timeout using "fetchTimeoutMillis" SDK setting.' + - ' Unix timestamp in milliseconds when fetch request throttling ends: {$throttleEndTimeMillis}.', - ["fetch-client-parse" /* ErrorCode.FETCH_PARSE */]: 'Fetch client could not parse response.' + - ' Original error: {$originalErrorMessage}.', - ["fetch-status" /* ErrorCode.FETCH_STATUS */]: 'Fetch server returned an HTTP error status. HTTP status: {$httpStatus}.', - ["indexed-db-unavailable" /* ErrorCode.INDEXED_DB_UNAVAILABLE */]: 'Indexed DB is not supported by current browser', - ["custom-signal-max-allowed-signals" /* ErrorCode.CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS */]: 'Setting more than {$maxSignals} custom signals is not supported.', - ["stream-error" /* ErrorCode.CONFIG_UPDATE_STREAM_ERROR */]: 'The stream was not able to connect to the backend: {$originalErrorMessage}.', - ["realtime-unavailable" /* ErrorCode.CONFIG_UPDATE_UNAVAILABLE */]: 'The Realtime service is unavailable: {$originalErrorMessage}', - ["update-message-invalid" /* ErrorCode.CONFIG_UPDATE_MESSAGE_INVALID */]: 'The stream invalidation message was unparsable: {$originalErrorMessage}', - ["update-not-fetched" /* ErrorCode.CONFIG_UPDATE_NOT_FETCHED */]: 'Unable to fetch the latest config: {$originalErrorMessage}' -}; -const ERROR_FACTORY = new util.ErrorFactory('remoteconfig' /* service */, 'Remote Config' /* service name */, ERROR_DESCRIPTION_MAP); -// Note how this is like typeof/instanceof, but for ErrorCode. -function hasErrorCode(e, errorCode) { - return e instanceof util.FirebaseError && e.code.indexOf(errorCode) !== -1; -} - -/** - * @license - * Copyright 2019 Google LLC - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -const DEFAULT_VALUE_FOR_BOOLEAN = false; -const DEFAULT_VALUE_FOR_STRING = ''; -const DEFAULT_VALUE_FOR_NUMBER = 0; -const BOOLEAN_TRUTHY_VALUES = ['1', 'true', 't', 'yes', 'y', 'on']; -class Value { - constructor(_source, _value = DEFAULT_VALUE_FOR_STRING) { - this._source = _source; - this._value = _value; - } - asString() { - return this._value; - } - asBoolean() { - if (this._source === 'static') { - return DEFAULT_VALUE_FOR_BOOLEAN; - } - return BOOLEAN_TRUTHY_VALUES.indexOf(this._value.toLowerCase()) >= 0; - } - asNumber() { - if (this._source === 'static') { - return DEFAULT_VALUE_FOR_NUMBER; - } - let num = Number(this._value); - if (isNaN(num)) { - num = DEFAULT_VALUE_FOR_NUMBER; - } - return num; - } - getSource() { - return this._source; - } -} - -/** - * @license - * Copyright 2020 Google LLC - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -/** - * - * @param app - The {@link @firebase/app#FirebaseApp} instance. - * @param options - Optional. The {@link RemoteConfigOptions} with which to instantiate the - * Remote Config instance. - * @returns A {@link RemoteConfig} instance. - * - * @public - */ -function getRemoteConfig(app$1 = app.getApp(), options = {}) { - app$1 = util.getModularInstance(app$1); - const rcProvider = app._getProvider(app$1, RC_COMPONENT_NAME); - if (rcProvider.isInitialized()) { - const initialOptions = rcProvider.getOptions(); - if (util.deepEqual(initialOptions, options)) { - return rcProvider.getImmediate(); - } - throw ERROR_FACTORY.create("already-initialized" /* ErrorCode.ALREADY_INITIALIZED */); - } - rcProvider.initialize({ options }); - const rc = rcProvider.getImmediate(); - if (options.initialFetchResponse) { - // We use these initial writes as the initialization promise since they will hydrate the same - // fields that `storageCache.loadFromStorage` would set. - rc._initializePromise = Promise.all([ - rc._storage.setLastSuccessfulFetchResponse(options.initialFetchResponse), - rc._storage.setActiveConfigEtag(options.initialFetchResponse?.eTag || ''), - rc._storage.setActiveConfigTemplateVersion(options.initialFetchResponse.templateVersion || 0), - rc._storageCache.setLastSuccessfulFetchTimestampMillis(Date.now()), - rc._storageCache.setLastFetchStatus('success'), - rc._storageCache.setActiveConfig(options.initialFetchResponse?.config || {}) - ]).then(); - // The `storageCache` methods above set their in-memory fields synchronously, so it's - // safe to declare our initialization complete at this point. - rc._isInitializationComplete = true; - } - return rc; -} -/** - * Makes the last fetched config available to the getters. - * @param remoteConfig - The {@link RemoteConfig} instance. - * @returns A `Promise` which resolves to true if the current call activated the fetched configs. - * If the fetched configs were already activated, the `Promise` will resolve to false. - * - * @public - */ -async function activate(remoteConfig) { - const rc = util.getModularInstance(remoteConfig); - const [lastSuccessfulFetchResponse, activeConfigEtag] = await Promise.all([ - rc._storage.getLastSuccessfulFetchResponse(), - rc._storage.getActiveConfigEtag() - ]); - if (!lastSuccessfulFetchResponse || - !lastSuccessfulFetchResponse.config || - !lastSuccessfulFetchResponse.eTag || - !lastSuccessfulFetchResponse.templateVersion || - lastSuccessfulFetchResponse.eTag === activeConfigEtag) { - // Either there is no successful fetched config, or is the same as current active - // config. - return false; - } - await Promise.all([ - rc._storageCache.setActiveConfig(lastSuccessfulFetchResponse.config), - rc._storage.setActiveConfigEtag(lastSuccessfulFetchResponse.eTag), - rc._storage.setActiveConfigTemplateVersion(lastSuccessfulFetchResponse.templateVersion) - ]); - return true; -} -/** - * Ensures the last activated config are available to the getters. - * @param remoteConfig - The {@link RemoteConfig} instance. - * - * @returns A `Promise` that resolves when the last activated config is available to the getters. - * @public - */ -function ensureInitialized(remoteConfig) { - const rc = util.getModularInstance(remoteConfig); - if (!rc._initializePromise) { - rc._initializePromise = rc._storageCache.loadFromStorage().then(() => { - rc._isInitializationComplete = true; - }); - } - return rc._initializePromise; -} -/** - * Fetches and caches configuration from the Remote Config service. - * @param remoteConfig - The {@link RemoteConfig} instance. - * @public - */ -async function fetchConfig(remoteConfig) { - const rc = util.getModularInstance(remoteConfig); - // Aborts the request after the given timeout, causing the fetch call to - // reject with an `AbortError`. - // - // <p>Aborting after the request completes is a no-op, so we don't need a - // corresponding `clearTimeout`. - // - // Locating abort logic here because: - // * it uses a developer setting (timeout) - // * it applies to all retries (like curl's max-time arg) - // * it is consistent with the Fetch API's signal input - const abortSignal = new RemoteConfigAbortSignal(); - setTimeout(async () => { - // Note a very low delay, eg < 10ms, can elapse before listeners are initialized. - abortSignal.abort(); - }, rc.settings.fetchTimeoutMillis); - const customSignals = rc._storageCache.getCustomSignals(); - if (customSignals) { - rc._logger.debug(`Fetching config with custom signals: ${JSON.stringify(customSignals)}`); - } - // Catches *all* errors thrown by client so status can be set consistently. - try { - await rc._client.fetch({ - cacheMaxAgeMillis: rc.settings.minimumFetchIntervalMillis, - signal: abortSignal, - customSignals - }); - await rc._storageCache.setLastFetchStatus('success'); - } - catch (e) { - const lastFetchStatus = hasErrorCode(e, "fetch-throttle" /* ErrorCode.FETCH_THROTTLE */) - ? 'throttle' - : 'failure'; - await rc._storageCache.setLastFetchStatus(lastFetchStatus); - throw e; - } -} -/** - * Gets all config. - * - * @param remoteConfig - The {@link RemoteConfig} instance. - * @returns All config. - * - * @public - */ -function getAll(remoteConfig) { - const rc = util.getModularInstance(remoteConfig); - return getAllKeys(rc._storageCache.getActiveConfig(), rc.defaultConfig).reduce((allConfigs, key) => { - allConfigs[key] = getValue(remoteConfig, key); - return allConfigs; - }, {}); -} -/** - * Gets the value for the given key as a boolean. - * - * Convenience method for calling <code>remoteConfig.getValue(key).asBoolean()</code>. - * - * @param remoteConfig - The {@link RemoteConfig} instance. - * @param key - The name of the parameter. - * - * @returns The value for the given key as a boolean. - * @public - */ -function getBoolean(remoteConfig, key) { - return getValue(util.getModularInstance(remoteConfig), key).asBoolean(); -} -/** - * Gets the value for the given key as a number. - * - * Convenience method for calling <code>remoteConfig.getValue(key).asNumber()</code>. - * - * @param remoteConfig - The {@link RemoteConfig} instance. - * @param key - The name of the parameter. - * - * @returns The value for the given key as a number. - * - * @public - */ -function getNumber(remoteConfig, key) { - return getValue(util.getModularInstance(remoteConfig), key).asNumber(); -} -/** - * Gets the value for the given key as a string. - * Convenience method for calling <code>remoteConfig.getValue(key).asString()</code>. - * - * @param remoteConfig - The {@link RemoteConfig} instance. - * @param key - The name of the parameter. - * - * @returns The value for the given key as a string. - * - * @public - */ -function getString(remoteConfig, key) { - return getValue(util.getModularInstance(remoteConfig), key).asString(); -} -/** - * Gets the {@link Value} for the given key. - * - * @param remoteConfig - The {@link RemoteConfig} instance. - * @param key - The name of the parameter. - * - * @returns The value for the given key. - * - * @public - */ -function getValue(remoteConfig, key) { - const rc = util.getModularInstance(remoteConfig); - if (!rc._isInitializationComplete) { - rc._logger.debug(`A value was requested for key "${key}" before SDK initialization completed.` + - ' Await on ensureInitialized if the intent was to get a previously activated value.'); - } - const activeConfig = rc._storageCache.getActiveConfig(); - if (activeConfig && activeConfig[key] !== undefined) { - return new Value('remote', activeConfig[key]); - } - else if (rc.defaultConfig && rc.defaultConfig[key] !== undefined) { - return new Value('default', String(rc.defaultConfig[key])); - } - rc._logger.debug(`Returning static value for key "${key}".` + - ' Define a default or remote value if this is unintentional.'); - return new Value('static'); -} -/** - * Defines the log level to use. - * - * @param remoteConfig - The {@link RemoteConfig} instance. - * @param logLevel - The log level to set. - * - * @public - */ -function setLogLevel(remoteConfig, logLevel) { - const rc = util.getModularInstance(remoteConfig); - switch (logLevel) { - case 'debug': - rc._logger.logLevel = logger.LogLevel.DEBUG; - break; - case 'silent': - rc._logger.logLevel = logger.LogLevel.SILENT; - break; - default: - rc._logger.logLevel = logger.LogLevel.ERROR; - } -} -/** - * Dedupes and returns an array of all the keys of the received objects. - */ -function getAllKeys(obj1 = {}, obj2 = {}) { - return Object.keys({ ...obj1, ...obj2 }); -} -/** - * Sets the custom signals for the app instance. - * - * @param remoteConfig - The {@link RemoteConfig} instance. - * @param customSignals - Map (key, value) of the custom signals to be set for the app instance. If - * a key already exists, the value is overwritten. Setting the value of a custom signal to null - * unsets the signal. The signals will be persisted locally on the client. - * - * @public - */ -async function setCustomSignals(remoteConfig, customSignals) { - const rc = util.getModularInstance(remoteConfig); - if (Object.keys(customSignals).length === 0) { - return; - } - // eslint-disable-next-line guard-for-in - for (const key in customSignals) { - if (key.length > RC_CUSTOM_SIGNAL_KEY_MAX_LENGTH) { - rc._logger.error(`Custom signal key ${key} is too long, max allowed length is ${RC_CUSTOM_SIGNAL_KEY_MAX_LENGTH}.`); - return; - } - const value = customSignals[key]; - if (typeof value === 'string' && - value.length > RC_CUSTOM_SIGNAL_VALUE_MAX_LENGTH) { - rc._logger.error(`Value supplied for custom signal ${key} is too long, max allowed length is ${RC_CUSTOM_SIGNAL_VALUE_MAX_LENGTH}.`); - return; - } - } - try { - await rc._storageCache.setCustomSignals(customSignals); - } - catch (error) { - rc._logger.error(`Error encountered while setting custom signals: ${error}`); - } -} -// TODO: Add public document for the Remote Config Realtime API guide on the Web Platform. -/** - * Starts listening for real-time config updates from the Remote Config backend and automatically - * fetches updates from the Remote Config backend when they are available. - * - * @remarks - * If a connection to the Remote Config backend is not already open, calling this method will - * open it. Multiple listeners can be added by calling this method again, but subsequent calls - * re-use the same connection to the backend. - * - * @param remoteConfig - The {@link RemoteConfig} instance. - * @param observer - The {@link ConfigUpdateObserver} to be notified of config updates. - * @returns An {@link Unsubscribe} function to remove the listener. - * - * @public - */ -function onConfigUpdate(remoteConfig, observer) { - const rc = util.getModularInstance(remoteConfig); - rc._realtimeHandler.addObserver(observer); - return () => { - rc._realtimeHandler.removeObserver(observer); - }; -} - -/** - * @license - * Copyright 2019 Google LLC - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -/** - * Implements the {@link RemoteConfigClient} abstraction with success response caching. - * - * <p>Comparable to the browser's Cache API for responses, but the Cache API requires a Service - * Worker, which requires HTTPS, which would significantly complicate SDK installation. Also, the - * Cache API doesn't support matching entries by time. - */ -class CachingClient { - constructor(client, storage, storageCache, logger) { - this.client = client; - this.storage = storage; - this.storageCache = storageCache; - this.logger = logger; - } - /** - * Returns true if the age of the cached fetched configs is less than or equal to - * {@link Settings#minimumFetchIntervalInSeconds}. - * - * <p>This is comparable to passing `headers = { 'Cache-Control': max-age <maxAge> }` to the - * native Fetch API. - * - * <p>Visible for testing. - */ - isCachedDataFresh(cacheMaxAgeMillis, lastSuccessfulFetchTimestampMillis) { - // Cache can only be fresh if it's populated. - if (!lastSuccessfulFetchTimestampMillis) { - this.logger.debug('Config fetch cache check. Cache unpopulated.'); - return false; - } - // Calculates age of cache entry. - const cacheAgeMillis = Date.now() - lastSuccessfulFetchTimestampMillis; - const isCachedDataFresh = cacheAgeMillis <= cacheMaxAgeMillis; - this.logger.debug('Config fetch cache check.' + - ` Cache age millis: ${cacheAgeMillis}.` + - ` Cache max age millis (minimumFetchIntervalMillis setting): ${cacheMaxAgeMillis}.` + - ` Is cache hit: ${isCachedDataFresh}.`); - return isCachedDataFresh; - } - async fetch(request) { - // Reads from persisted storage to avoid cache miss if callers don't wait on initialization. - const [lastSuccessfulFetchTimestampMillis, lastSuccessfulFetchResponse] = await Promise.all([ - this.storage.getLastSuccessfulFetchTimestampMillis(), - this.storage.getLastSuccessfulFetchResponse() - ]); - // Exits early on cache hit. - if (lastSuccessfulFetchResponse && - this.isCachedDataFresh(request.cacheMaxAgeMillis, lastSuccessfulFetchTimestampMillis)) { - return lastSuccessfulFetchResponse; - } - // Deviates from pure decorator by not honoring a passed ETag since we don't have a public API - // that allows the caller to pass an ETag. - request.eTag = - lastSuccessfulFetchResponse && lastSuccessfulFetchResponse.eTag; - // Falls back to service on cache miss. - const response = await this.client.fetch(request); - // Fetch throws for non-success responses, so success is guaranteed here. - const storageOperations = [ - // Uses write-through cache for consistency with synchronous public API. - this.storageCache.setLastSuccessfulFetchTimestampMillis(Date.now()) - ]; - if (response.status === 200) { - // Caches response only if it has changed, ie non-304 responses. - storageOperations.push(this.storage.setLastSuccessfulFetchResponse(response)); - } - await Promise.all(storageOperations); - return response; - } -} - -/** - * @license - * Copyright 2019 Google LLC - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -/** - * Attempts to get the most accurate browser language setting. - * - * <p>Adapted from getUserLanguage in packages/auth/src/utils.js for TypeScript. - * - * <p>Defers default language specification to server logic for consistency. - * - * @param navigatorLanguage Enables tests to override read-only {@link NavigatorLanguage}. - */ -function getUserLanguage(navigatorLanguage = navigator) { - return ( - // Most reliable, but only supported in Chrome/Firefox. - (navigatorLanguage.languages && navigatorLanguage.languages[0]) || - // Supported in most browsers, but returns the language of the browser - // UI, not the language set in browser settings. - navigatorLanguage.language - // Polyfill otherwise. - ); -} - -/** - * @license - * Copyright 2019 Google LLC - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -/** - * Implements the Client abstraction for the Remote Config REST API. - */ -class RestClient { - constructor(firebaseInstallations, sdkVersion, namespace, projectId, apiKey, appId) { - this.firebaseInstallations = firebaseInstallations; - this.sdkVersion = sdkVersion; - this.namespace = namespace; - this.projectId = projectId; - this.apiKey = apiKey; - this.appId = appId; - } - /** - * Fetches from the Remote Config REST API. - * - * @throws a {@link ErrorCode.FETCH_NETWORK} error if {@link GlobalFetch#fetch} can't - * connect to the network. - * @throws a {@link ErrorCode.FETCH_PARSE} error if {@link Response#json} can't parse the - * fetch response. - * @throws a {@link ErrorCode.FETCH_STATUS} error if the service returns an HTTP error status. - */ - async fetch(request) { - const [installationId, installationToken] = await Promise.all([ - this.firebaseInstallations.getId(), - this.firebaseInstallations.getToken() - ]); - const urlBase = window.FIREBASE_REMOTE_CONFIG_URL_BASE || - 'https://firebaseremoteconfig.googleapis.com'; - const url = `${urlBase}/v1/projects/${this.projectId}/namespaces/${this.namespace}:fetch?key=${this.apiKey}`; - const headers = { - 'Content-Type': 'application/json', - 'Content-Encoding': 'gzip', - // Deviates from pure decorator by not passing max-age header since we don't currently have - // service behavior using that header. - 'If-None-Match': request.eTag || '*' - // TODO: Add this header once CORS error is fixed internally. - //'X-Firebase-RC-Fetch-Type': `${fetchType}/${fetchAttempt}` - }; - const requestBody = { - /* eslint-disable camelcase */ - sdk_version: this.sdkVersion, - app_instance_id: installationId, - app_instance_id_token: installationToken, - app_id: this.appId, - language_code: getUserLanguage(), - custom_signals: request.customSignals - /* eslint-enable camelcase */ - }; - const options = { - method: 'POST', - headers, - body: JSON.stringify(requestBody) - }; - // This logic isn't REST-specific, but shimming abort logic isn't worth another decorator. - const fetchPromise = fetch(url, options); - const timeoutPromise = new Promise((_resolve, reject) => { - // Maps async event listener to Promise API. - request.signal.addEventListener(() => { - // Emulates https://heycam.github.io/webidl/#aborterror - const error = new Error('The operation was aborted.'); - error.name = 'AbortError'; - reject(error); - }); - }); - let response; - try { - await Promise.race([fetchPromise, timeoutPromise]); - response = await fetchPromise; - } - catch (originalError) { - let errorCode = "fetch-client-network" /* ErrorCode.FETCH_NETWORK */; - if (originalError?.name === 'AbortError') { - errorCode = "fetch-timeout" /* ErrorCode.FETCH_TIMEOUT */; - } - throw ERROR_FACTORY.create(errorCode, { - originalErrorMessage: originalError?.message - }); - } - let status = response.status; - // Normalizes nullable header to optional. - const responseEtag = response.headers.get('ETag') || undefined; - let config; - let state; - let templateVersion; - // JSON parsing throws SyntaxError if the response body isn't a JSON string. - // Requesting application/json and checking for a 200 ensures there's JSON data. - if (response.status === 200) { - let responseBody; - try { - responseBody = await response.json(); - } - catch (originalError) { - throw ERROR_FACTORY.create("fetch-client-parse" /* ErrorCode.FETCH_PARSE */, { - originalErrorMessage: originalError?.message - }); - } - config = responseBody['entries']; - state = responseBody['state']; - templateVersion = responseBody['templateVersion']; - } - // Normalizes based on legacy state. - if (state === 'INSTANCE_STATE_UNSPECIFIED') { - status = 500; - } - else if (state === 'NO_CHANGE') { - status = 304; - } - else if (state === 'NO_TEMPLATE' || state === 'EMPTY_CONFIG') { - // These cases can be fixed remotely, so normalize to safe value. - config = {}; - } - // Normalize to exception-based control flow for non-success cases. - // Encapsulates HTTP specifics in this class as much as possible. Status is still the best for - // differentiating success states (200 from 304; the state body param is undefined in a - // standard 304). - if (status !== 304 && status !== 200) { - throw ERROR_FACTORY.create("fetch-status" /* ErrorCode.FETCH_STATUS */, { - httpStatus: status - }); - } - return { status, eTag: responseEtag, config, templateVersion }; - } -} - -/** - * @license - * Copyright 2019 Google LLC - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -/** - * Supports waiting on a backoff by: - * - * <ul> - * <li>Promisifying setTimeout, so we can set a timeout in our Promise chain</li> - * <li>Listening on a signal bus for abort events, just like the Fetch API</li> - * <li>Failing in the same way the Fetch API fails, so timing out a live request and a throttled - * request appear the same.</li> - * </ul> - * - * <p>Visible for testing. - */ -function setAbortableTimeout(signal, throttleEndTimeMillis) { - return new Promise((resolve, reject) => { - // Derives backoff from given end time, normalizing negative numbers to zero. - const backoffMillis = Math.max(throttleEndTimeMillis - Date.now(), 0); - const timeout = setTimeout(resolve, backoffMillis); - // Adds listener, rather than sets onabort, because signal is a shared object. - signal.addEventListener(() => { - clearTimeout(timeout); - // If the request completes before this timeout, the rejection has no effect. - reject(ERROR_FACTORY.create("fetch-throttle" /* ErrorCode.FETCH_THROTTLE */, { - throttleEndTimeMillis - })); - }); - }); -} -/** - * Returns true if the {@link Error} indicates a fetch request may succeed later. - */ -function isRetriableError(e) { - if (!(e instanceof util.FirebaseError) || !e.customData) { - return false; - } - // Uses string index defined by ErrorData, which FirebaseError implements. - const httpStatus = Number(e.customData['httpStatus']); - return (httpStatus === 429 || - httpStatus === 500 || - httpStatus === 503 || - httpStatus === 504); -} -/** - * Decorates a Client with retry logic. - * - * <p>Comparable to CachingClient, but uses backoff logic instead of cache max age and doesn't cache - * responses (because the SDK has no use for error responses). - */ -class RetryingClient { - constructor(client, storage) { - this.client = client; - this.storage = storage; - } - async fetch(request) { - const throttleMetadata = (await this.storage.getThrottleMetadata()) || { - backoffCount: 0, - throttleEndTimeMillis: Date.now() - }; - return this.attemptFetch(request, throttleMetadata); - } - /** - * A recursive helper for attempting a fetch request repeatedly. - * - * @throws any non-retriable errors. - */ - async attemptFetch(request, { throttleEndTimeMillis, backoffCount }) { - // Starts with a (potentially zero) timeout to support resumption from stored state. - // Ensures the throttle end time is honored if the last attempt timed out. - // Note the SDK will never make a request if the fetch timeout expires at this point. - await setAbortableTimeout(request.signal, throttleEndTimeMillis); - try { - const response = await this.client.fetch(request); - // Note the SDK only clears throttle state if response is success or non-retriable. - await this.storage.deleteThrottleMetadata(); - return response; - } - catch (e) { - if (!isRetriableError(e)) { - throw e; - } - // Increments backoff state. - const throttleMetadata = { - throttleEndTimeMillis: Date.now() + util.calculateBackoffMillis(backoffCount), - backoffCount: backoffCount + 1 - }; - // Persists state. - await this.storage.setThrottleMetadata(throttleMetadata); - return this.attemptFetch(request, throttleMetadata); - } - } -} - -/** - * @license - * Copyright 2019 Google LLC - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -const DEFAULT_FETCH_TIMEOUT_MILLIS = 60 * 1000; // One minute -const DEFAULT_CACHE_MAX_AGE_MILLIS = 12 * 60 * 60 * 1000; // Twelve hours. -/** - * Encapsulates business logic mapping network and storage dependencies to the public SDK API. - * - * See {@link https://github.com/firebase/firebase-js-sdk/blob/main/packages/firebase/compat/index.d.ts|interface documentation} for method descriptions. - */ -class RemoteConfig { - get fetchTimeMillis() { - return this._storageCache.getLastSuccessfulFetchTimestampMillis() || -1; - } - get lastFetchStatus() { - return this._storageCache.getLastFetchStatus() || 'no-fetch-yet'; - } - constructor( - // Required by FirebaseServiceFactory interface. - app, - // JS doesn't support private yet - // (https://github.com/tc39/proposal-class-fields#private-fields), so we hint using an - // underscore prefix. - /** - * @internal - */ - _client, - /** - * @internal - */ - _storageCache, - /** - * @internal - */ - _storage, - /** - * @internal - */ - _logger, - /** - * @internal - */ - _realtimeHandler) { - this.app = app; - this._client = _client; - this._storageCache = _storageCache; - this._storage = _storage; - this._logger = _logger; - this._realtimeHandler = _realtimeHandler; - /** - * Tracks completion of initialization promise. - * @internal - */ - this._isInitializationComplete = false; - this.settings = { - fetchTimeoutMillis: DEFAULT_FETCH_TIMEOUT_MILLIS, - minimumFetchIntervalMillis: DEFAULT_CACHE_MAX_AGE_MILLIS - }; - this.defaultConfig = {}; - } -} - -/** - * @license - * Copyright 2019 Google LLC - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -/** - * Converts an error event associated with a {@link IDBRequest} to a {@link FirebaseError}. - */ -function toFirebaseError(event, errorCode) { - const originalError = event.target.error || undefined; - return ERROR_FACTORY.create(errorCode, { - originalErrorMessage: originalError && originalError?.message - }); -} -/** - * A general-purpose store keyed by app + namespace + {@link - * ProjectNamespaceKeyFieldValue}. - * - * <p>The Remote Config SDK can be used with multiple app installations, and each app can interact - * with multiple namespaces, so this store uses app (ID + name) and namespace as common parent keys - * for a set of key-value pairs. See {@link Storage#createCompositeKey}. - * - * <p>Visible for testing. - */ -const APP_NAMESPACE_STORE = 'app_namespace_store'; -const DB_NAME = 'firebase_remote_config'; -const DB_VERSION = 1; -// Visible for testing. -function openDatabase() { - return new Promise((resolve, reject) => { - try { - const request = indexedDB.open(DB_NAME, DB_VERSION); - request.onerror = event => { - reject(toFirebaseError(event, "storage-open" /* ErrorCode.STORAGE_OPEN */)); - }; - request.onsuccess = event => { - resolve(event.target.result); - }; - request.onupgradeneeded = event => { - const db = event.target.result; - // We don't use 'break' in this switch statement, the fall-through - // behavior is what we want, because if there are multiple versions between - // the old version and the current version, we want ALL the migrations - // that correspond to those versions to run, not only the last one. - // eslint-disable-next-line default-case - switch (event.oldVersion) { - case 0: - db.createObjectStore(APP_NAMESPACE_STORE, { - keyPath: 'compositeKey' - }); - } - }; - } - catch (error) { - reject(ERROR_FACTORY.create("storage-open" /* ErrorCode.STORAGE_OPEN */, { - originalErrorMessage: error?.message - })); - } - }); -} -/** - * Abstracts data persistence. - */ -class Storage { - getLastFetchStatus() { - return this.get('last_fetch_status'); - } - setLastFetchStatus(status) { - return this.set('last_fetch_status', status); - } - // This is comparable to a cache entry timestamp. If we need to expire other data, we could - // consider adding timestamp to all storage records and an optional max age arg to getters. - getLastSuccessfulFetchTimestampMillis() { - return this.get('last_successful_fetch_timestamp_millis'); - } - setLastSuccessfulFetchTimestampMillis(timestamp) { - return this.set('last_successful_fetch_timestamp_millis', timestamp); - } - getLastSuccessfulFetchResponse() { - return this.get('last_successful_fetch_response'); - } - setLastSuccessfulFetchResponse(response) { - return this.set('last_successful_fetch_response', response); - } - getActiveConfig() { - return this.get('active_config'); - } - setActiveConfig(config) { - return this.set('active_config', config); - } - getActiveConfigEtag() { - return this.get('active_config_etag'); - } - setActiveConfigEtag(etag) { - return this.set('active_config_etag', etag); - } - getThrottleMetadata() { - return this.get('throttle_metadata'); - } - setThrottleMetadata(metadata) { - return this.set('throttle_metadata', metadata); - } - deleteThrottleMetadata() { - return this.delete('throttle_metadata'); - } - getCustomSignals() { - return this.get('custom_signals'); - } - getRealtimeBackoffMetadata() { - return this.get('realtime_backoff_metadata'); - } - setRealtimeBackoffMetadata(realtimeMetadata) { - return this.set('realtime_backoff_metadata', realtimeMetadata); - } - getActiveConfigTemplateVersion() { - return this.get('last_known_template_version'); - } - setActiveConfigTemplateVersion(version) { - return this.set('last_known_template_version', version); - } -} -class IndexedDbStorage extends Storage { - /** - * @param appId enables storage segmentation by app (ID + name). - * @param appName enables storage segmentation by app (ID + name). - * @param namespace enables storage segmentation by namespace. - */ - constructor(appId, appName, namespace, openDbPromise = openDatabase()) { - super(); - this.appId = appId; - this.appName = appName; - this.namespace = namespace; - this.openDbPromise = openDbPromise; - } - async setCustomSignals(customSignals) { - const db = await this.openDbPromise; - const transaction = db.transaction([APP_NAMESPACE_STORE], 'readwrite'); - const storedSignals = await this.getWithTransaction('custom_signals', transaction); - const updatedSignals = mergeCustomSignals(customSignals, storedSignals || {}); - await this.setWithTransaction('custom_signals', updatedSignals, transaction); - return updatedSignals; - } - /** - * Gets a value from the database using the provided transaction. - * - * @param key The key of the value to get. - * @param transaction The transaction to use for the operation. - * @returns The value associated with the key, or undefined if no such value exists. - */ - async getWithTransaction(key, transaction) { - return new Promise((resolve, reject) => { - const objectStore = transaction.objectStore(APP_NAMESPACE_STORE); - const compositeKey = this.createCompositeKey(key); - try { - const request = objectStore.get(compositeKey); - request.onerror = event => { - reject(toFirebaseError(event, "storage-get" /* ErrorCode.STORAGE_GET */)); - }; - request.onsuccess = event => { - const result = event.target.result; - if (result) { - resolve(result.value); - } - else { - resolve(undefined); - } - }; - } - catch (e) { - reject(ERROR_FACTORY.create("storage-get" /* ErrorCode.STORAGE_GET */, { - originalErrorMessage: e?.message - })); - } - }); - } - /** - * Sets a value in the database using the provided transaction. - * - * @param key The key of the value to set. - * @param value The value to set. - * @param transaction The transaction to use for the operation. - * @returns A promise that resolves when the operation is complete. - */ - async setWithTransaction(key, value, transaction) { - return new Promise((resolve, reject) => { - const objectStore = transaction.objectStore(APP_NAMESPACE_STORE); - const compositeKey = this.createCompositeKey(key); - try { - const request = objectStore.put({ - compositeKey, - value - }); - request.onerror = (event) => { - reject(toFirebaseError(event, "storage-set" /* ErrorCode.STORAGE_SET */)); - }; - request.onsuccess = () => { - resolve(); - }; - } - catch (e) { - reject(ERROR_FACTORY.create("storage-set" /* ErrorCode.STORAGE_SET */, { - originalErrorMessage: e?.message - })); - } - }); - } - async get(key) { - const db = await this.openDbPromise; - const transaction = db.transaction([APP_NAMESPACE_STORE], 'readonly'); - return this.getWithTransaction(key, transaction); - } - async set(key, value) { - const db = await this.openDbPromise; - const transaction = db.transaction([APP_NAMESPACE_STORE], 'readwrite'); - return this.setWithTransaction(key, value, transaction); - } - async delete(key) { - const db = await this.openDbPromise; - return new Promise((resolve, reject) => { - const transaction = db.transaction([APP_NAMESPACE_STORE], 'readwrite'); - const objectStore = transaction.objectStore(APP_NAMESPACE_STORE); - const compositeKey = this.createCompositeKey(key); - try { - const request = objectStore.delete(compositeKey); - request.onerror = (event) => { - reject(toFirebaseError(event, "storage-delete" /* ErrorCode.STORAGE_DELETE */)); - }; - request.onsuccess = () => { - resolve(); - }; - } - catch (e) { - reject(ERROR_FACTORY.create("storage-delete" /* ErrorCode.STORAGE_DELETE */, { - originalErrorMessage: e?.message - })); - } - }); - } - // Facilitates composite key functionality (which is unsupported in IE). - createCompositeKey(key) { - return [this.appId, this.appName, this.namespace, key].join(); - } -} -class InMemoryStorage extends Storage { - constructor() { - super(...arguments); - this.storage = {}; - } - async get(key) { - return Promise.resolve(this.storage[key]); - } - async set(key, value) { - this.storage[key] = value; - return Promise.resolve(undefined); - } - async delete(key) { - this.storage[key] = undefined; - return Promise.resolve(); - } - async setCustomSignals(customSignals) { - const storedSignals = (this.storage['custom_signals'] || - {}); - this.storage['custom_signals'] = mergeCustomSignals(customSignals, storedSignals); - return Promise.resolve(this.storage['custom_signals']); - } -} -function mergeCustomSignals(customSignals, storedSignals) { - const combinedSignals = { - ...storedSignals, - ...customSignals - }; - // Filter out key-value assignments with null values since they are signals being unset - const updatedSignals = Object.fromEntries(Object.entries(combinedSignals) - .filter(([_, v]) => v !== null) - .map(([k, v]) => { - // Stringify numbers to store a map of string keys and values which can be sent - // as-is in a fetch call. - if (typeof v === 'number') { - return [k, v.toString()]; - } - return [k, v]; - })); - // Throw an error if the number of custom signals to be stored exceeds the limit - if (Object.keys(updatedSignals).length > RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS) { - throw ERROR_FACTORY.create("custom-signal-max-allowed-signals" /* ErrorCode.CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS */, { - maxSignals: RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS - }); - } - return updatedSignals; -} - -/** - * @license - * Copyright 2019 Google LLC - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -/** - * A memory cache layer over storage to support the SDK's synchronous read requirements. - */ -class StorageCache { - constructor(storage) { - this.storage = storage; - } - /** - * Memory-only getters - */ - getLastFetchStatus() { - return this.lastFetchStatus; - } - getLastSuccessfulFetchTimestampMillis() { - return this.lastSuccessfulFetchTimestampMillis; - } - getActiveConfig() { - return this.activeConfig; - } - getCustomSignals() { - return this.customSignals; - } - /** - * Read-ahead getter - */ - async loadFromStorage() { - const lastFetchStatusPromise = this.storage.getLastFetchStatus(); - const lastSuccessfulFetchTimestampMillisPromise = this.storage.getLastSuccessfulFetchTimestampMillis(); - const activeConfigPromise = this.storage.getActiveConfig(); - const customSignalsPromise = this.storage.getCustomSignals(); - // Note: - // 1. we consistently check for undefined to avoid clobbering defined values - // in memory - // 2. we defer awaiting to improve readability, as opposed to destructuring - // a Promise.all result, for example - const lastFetchStatus = await lastFetchStatusPromise; - if (lastFetchStatus) { - this.lastFetchStatus = lastFetchStatus; - } - const lastSuccessfulFetchTimestampMillis = await lastSuccessfulFetchTimestampMillisPromise; - if (lastSuccessfulFetchTimestampMillis) { - this.lastSuccessfulFetchTimestampMillis = - lastSuccessfulFetchTimestampMillis; - } - const activeConfig = await activeConfigPromise; - if (activeConfig) { - this.activeConfig = activeConfig; - } - const customSignals = await customSignalsPromise; - if (customSignals) { - this.customSignals = customSignals; - } - } - /** - * Write-through setters - */ - setLastFetchStatus(status) { - this.lastFetchStatus = status; - return this.storage.setLastFetchStatus(status); - } - setLastSuccessfulFetchTimestampMillis(timestampMillis) { - this.lastSuccessfulFetchTimestampMillis = timestampMillis; - return this.storage.setLastSuccessfulFetchTimestampMillis(timestampMillis); - } - setActiveConfig(activeConfig) { - this.activeConfig = activeConfig; - return this.storage.setActiveConfig(activeConfig); - } - async setCustomSignals(customSignals) { - this.customSignals = await this.storage.setCustomSignals(customSignals); - } -} - -/** - * @license - * Copyright 2025 Google LLC - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -// TODO: Consolidate the Visibility monitoring API code into a shared utility function in firebase/util to be used by both packages/database and packages/remote-config. -/** - * Base class to be used if you want to emit events. Call the constructor with - * the set of allowed event names. - */ -class EventEmitter { - constructor(allowedEvents_) { - this.allowedEvents_ = allowedEvents_; - this.listeners_ = {}; - util.assert(Array.isArray(allowedEvents_) && allowedEvents_.length > 0, 'Requires a non-empty array'); - } - /** - * To be called by derived classes to trigger events. - */ - trigger(eventType, ...varArgs) { - if (Array.isArray(this.listeners_[eventType])) { - // Clone the list, since callbacks could add/remove listeners. - const listeners = [...this.listeners_[eventType]]; - for (let i = 0; i < listeners.length; i++) { - listeners[i].callback.apply(listeners[i].context, varArgs); - } - } - } - on(eventType, callback, context) { - this.validateEventType_(eventType); - this.listeners_[eventType] = this.listeners_[eventType] || []; - this.listeners_[eventType].push({ callback, context }); - const eventData = this.getInitialEvent(eventType); - if (eventData) { - //@ts-ignore - callback.apply(context, eventData); - } - } - off(eventType, callback, context) { - this.validateEventType_(eventType); - const listeners = this.listeners_[eventType] || []; - for (let i = 0; i < listeners.length; i++) { - if (listeners[i].callback === callback && - (!context || context === listeners[i].context)) { - listeners.splice(i, 1); - return; - } - } - } - validateEventType_(eventType) { - util.assert(this.allowedEvents_.find(et => { - return et === eventType; - }), 'Unknown event: ' + eventType); - } -} - -/** - * @license - * Copyright 2025 Google LLC - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -// TODO: Consolidate the Visibility monitoring API code into a shared utility function in firebase/util to be used by both packages/database and packages/remote-config. -class VisibilityMonitor extends EventEmitter { - static getInstance() { - return new VisibilityMonitor(); - } - constructor() { - super(['visible']); - let hidden; - let visibilityChange; - if (typeof document !== 'undefined' && - typeof document.addEventListener !== 'undefined') { - if (typeof document['hidden'] !== 'undefined') { - // Opera 12.10 and Firefox 18 and later support - visibilityChange = 'visibilitychange'; - hidden = 'hidden'; - } // @ts-ignore - else if (typeof document['mozHidden'] !== 'undefined') { - visibilityChange = 'mozvisibilitychange'; - hidden = 'mozHidden'; - } // @ts-ignore - else if (typeof document['msHidden'] !== 'undefined') { - visibilityChange = 'msvisibilitychange'; - hidden = 'msHidden'; - } // @ts-ignore - else if (typeof document['webkitHidden'] !== 'undefined') { - visibilityChange = 'webkitvisibilitychange'; - hidden = 'webkitHidden'; - } - } - // Initially, we always assume we are visible. This ensures that in browsers - // without page visibility support or in cases where we are never visible - // (e.g. chrome extension), we act as if we are visible, i.e. don't delay - // reconnects - this.visible_ = true; - // @ts-ignore - if (visibilityChange) { - document.addEventListener(visibilityChange, () => { - // @ts-ignore - const visible = !document[hidden]; - if (visible !== this.visible_) { - this.visible_ = visible; - this.trigger('visible', visible); - } - }, false); - } - } - getInitialEvent(eventType) { - util.assert(eventType === 'visible', 'Unknown event type: ' + eventType); - return [this.visible_]; - } -} - -/** - * @license - * Copyright 2025 Google LLC - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -const API_KEY_HEADER = 'X-Goog-Api-Key'; -const INSTALLATIONS_AUTH_TOKEN_HEADER = 'X-Goog-Firebase-Installations-Auth'; -const ORIGINAL_RETRIES = 8; -const MAXIMUM_FETCH_ATTEMPTS = 3; -const NO_BACKOFF_TIME_IN_MILLIS = -1; -const NO_FAILED_REALTIME_STREAMS = 0; -const REALTIME_DISABLED_KEY = 'featureDisabled'; -const REALTIME_RETRY_INTERVAL = 'retryIntervalSeconds'; -const TEMPLATE_VERSION_KEY = 'latestTemplateVersionNumber'; -class RealtimeHandler { - constructor(firebaseInstallations, storage, sdkVersion, namespace, projectId, apiKey, appId, logger, storageCache, cachingClient) { - this.firebaseInstallations = firebaseInstallations; - this.storage = storage; - this.sdkVersion = sdkVersion; - this.namespace = namespace; - this.projectId = projectId; - this.apiKey = apiKey; - this.appId = appId; - this.logger = logger; - this.storageCache = storageCache; - this.cachingClient = cachingClient; - this.observers = new Set(); - this.isConnectionActive = false; - this.isRealtimeDisabled = false; - this.httpRetriesRemaining = ORIGINAL_RETRIES; - this.isInBackground = false; - this.decoder = new TextDecoder('utf-8'); - this.isClosingConnection = false; - this.propagateError = (e) => this.observers.forEach(o => o.error?.(e)); - /** - * HTTP status code that the Realtime client should retry on. - */ - this.isStatusCodeRetryable = (statusCode) => { - const retryableStatusCodes = [ - 408, // Request Timeout - 429, // Too Many Requests - 502, // Bad Gateway - 503, // Service Unavailable - 504 // Gateway Timeout - ]; - return !statusCode || retryableStatusCodes.includes(statusCode); - }; - void this.setRetriesRemaining(); - void VisibilityMonitor.getInstance().on('visible', this.onVisibilityChange, this); - } - async setRetriesRemaining() { - // Retrieve number of remaining retries from last session. The minimum retry count being one. - const metadata = await this.storage.getRealtimeBackoffMetadata(); - const numFailedStreams = metadata?.numFailedStreams || 0; - this.httpRetriesRemaining = Math.max(ORIGINAL_RETRIES - numFailedStreams, 1); - } - /** - * Increment the number of failed stream attempts, increase the backoff duration, set the backoff - * end time to "backoff duration" after `lastFailedStreamTime` and persist the new - * values to storage metadata. - */ - async updateBackoffMetadataWithLastFailedStreamConnectionTime(lastFailedStreamTime) { - const numFailedStreams = ((await this.storage.getRealtimeBackoffMetadata())?.numFailedStreams || - 0) + 1; - const backoffMillis = util.calculateBackoffMillis(numFailedStreams, 60000, 2); - await this.storage.setRealtimeBackoffMetadata({ - backoffEndTimeMillis: new Date(lastFailedStreamTime.getTime() + backoffMillis), - numFailedStreams - }); - } - /** - * Increase the backoff duration with a new end time based on Retry Interval. - */ - async updateBackoffMetadataWithRetryInterval(retryIntervalSeconds) { - const currentTime = Date.now(); - const backoffDurationInMillis = retryIntervalSeconds * 1000; - const backoffEndTime = new Date(currentTime + backoffDurationInMillis); - const numFailedStreams = 0; - await this.storage.setRealtimeBackoffMetadata({ - backoffEndTimeMillis: backoffEndTime, - numFailedStreams - }); - await this.retryHttpConnectionWhenBackoffEnds(); - } - /** - * Closes the realtime HTTP connection. - * Note: This method is designed to be called only once at a time. - * If a call is already in progress, subsequent calls will be ignored. - */ - async closeRealtimeHttpConnection() { - if (this.isClosingConnection) { - return; - } - this.isClosingConnection = true; - try { - if (this.reader) { - await this.reader.cancel(); - } - } - catch (e) { - // The network connection was lost, so cancel() failed. - // This is expected in a disconnected state, so we can safely ignore the error. - this.logger.debug('Failed to cancel the reader, connection was lost.'); - } - finally { - this.reader = undefined; - } - if (this.controller) { - await this.controller.abort(); - this.controller = undefined; - } - this.isClosingConnection = false; - } - async resetRealtimeBackoff() { - await this.storage.setRealtimeBackoffMetadata({ - backoffEndTimeMillis: new Date(-1), - numFailedStreams: 0 - }); - } - resetRetryCount() { - this.httpRetriesRemaining = ORIGINAL_RETRIES; - } - /** - * Assembles the request headers and body and executes the fetch request to - * establish the real-time streaming connection. This is the "worker" method - * that performs the actual network communication. - */ - async establishRealtimeConnection(url, installationId, installationTokenResult, signal) { - const eTagValue = await this.storage.getActiveConfigEtag(); - const lastKnownVersionNumber = await this.storage.getActiveConfigTemplateVersion(); - const headers = { - [API_KEY_HEADER]: this.apiKey, - [INSTALLATIONS_AUTH_TOKEN_HEADER]: installationTokenResult, - 'Content-Type': 'application/json', - 'Accept': 'application/json', - 'If-None-Match': eTagValue || '*', - 'Content-Encoding': 'gzip' - }; - const requestBody = { - project: this.projectId, - namespace: this.namespace, - lastKnownVersionNumber, - appId: this.appId, - sdkVersion: this.sdkVersion, - appInstanceId: installationId - }; - const response = await fetch(url, { - method: 'POST', - headers, - body: JSON.stringify(requestBody), - signal - }); - return response; - } - getRealtimeUrl() { - const urlBase = window.FIREBASE_REMOTE_CONFIG_URL_BASE || - 'https://firebaseremoteconfigrealtime.googleapis.com'; - const urlString = `${urlBase}/v1/projects/${this.projectId}/namespaces/${this.namespace}:streamFetchInvalidations?key=${this.apiKey}`; - return new URL(urlString); - } - async createRealtimeConnection() { - const [installationId, installationTokenResult] = await Promise.all([ - this.firebaseInstallations.getId(), - this.firebaseInstallations.getToken(false) - ]); - this.controller = new AbortController(); - const url = this.getRealtimeUrl(); - const realtimeConnection = await this.establishRealtimeConnection(url, installationId, installationTokenResult, this.controller.signal); - return realtimeConnection; - } - /** - * Retries HTTP stream connection asyncly in random time intervals. - */ - async retryHttpConnectionWhenBackoffEnds() { - let backoffMetadata = await this.storage.getRealtimeBackoffMetadata(); - if (!backoffMetadata) { - backoffMetadata = { - backoffEndTimeMillis: new Date(NO_BACKOFF_TIME_IN_MILLIS), - numFailedStreams: NO_FAILED_REALTIME_STREAMS - }; - } - const backoffEndTime = new Date(backoffMetadata.backoffEndTimeMillis).getTime(); - const currentTime = Date.now(); - const retryMillis = Math.max(0, backoffEndTime - currentTime); - await this.makeRealtimeHttpConnection(retryMillis); - } - setIsHttpConnectionRunning(connectionRunning) { - this.isConnectionActive = connectionRunning; - } - /** - * Combines the check and set operations to prevent multiple asynchronous - * calls from redundantly starting an HTTP connection. This ensures that - * only one attempt is made at a time. - */ - checkAndSetHttpConnectionFlagIfNotRunning() { - const canMakeConnection = this.canEstablishStreamConnection(); - if (canMakeConnection) { - this.setIsHttpConnectionRunning(true); - } - return canMakeConnection; - } - fetchResponseIsUpToDate(fetchResponse, lastKnownVersion) { - // If there is a config, make sure its version is >= the last known version. - if (fetchResponse.config != null && fetchResponse.templateVersion) { - return fetchResponse.templateVersion >= lastKnownVersion; - } - // If there isn't a config, return true if the fetch was successful and backend had no update. - // Else, it returned an out of date config. - return this.storageCache.getLastFetchStatus() === 'success'; - } - parseAndValidateConfigUpdateMessage(message) { - const left = message.indexOf('{'); - const right = message.indexOf('}', left); - if (left < 0 || right < 0) { - return ''; - } - return left >= right ? '' : message.substring(left, right + 1); - } - isEventListenersEmpty() { - return this.observers.size === 0; - } - getRandomInt(max) { - return Math.floor(Math.random() * max); - } - executeAllListenerCallbacks(configUpdate) { - this.observers.forEach(observer => observer.next(configUpdate)); - } - /** - * Compares two configuration objects and returns a set of keys that have changed. - * A key is considered changed if it's new, removed, or has a different value. - */ - getChangedParams(newConfig, oldConfig) { - const changedKeys = new Set(); - const newKeys = new Set(Object.keys(newConfig || {})); - const oldKeys = new Set(Object.keys(oldConfig || {})); - for (const key of newKeys) { - if (!oldKeys.has(key) || newConfig[key] !== oldConfig[key]) { - changedKeys.add(key); - } - } - for (const key of oldKeys) { - if (!newKeys.has(key)) { - changedKeys.add(key); - } - } - return changedKeys; - } - async fetchLatestConfig(remainingAttempts, targetVersion) { - const remainingAttemptsAfterFetch = remainingAttempts - 1; - const currentAttempt = MAXIMUM_FETCH_ATTEMPTS - remainingAttemptsAfterFetch; - const customSignals = this.storageCache.getCustomSignals(); - if (customSignals) { - this.logger.debug(`Fetching config with custom signals: ${JSON.stringify(customSignals)}`); - } - const abortSignal = new RemoteConfigAbortSignal(); - try { - const fetchRequest = { - cacheMaxAgeMillis: 0, - signal: abortSignal, - customSignals, - fetchType: 'REALTIME', - fetchAttempt: currentAttempt - }; - const fetchResponse = await this.cachingClient.fetch(fetchRequest); - let activatedConfigs = await this.storage.getActiveConfig(); - if (!this.fetchResponseIsUpToDate(fetchResponse, targetVersion)) { - this.logger.debug("Fetched template version is the same as SDK's current version." + - ' Retrying fetch.'); - // Continue fetching until template version number is greater than current. - await this.autoFetch(remainingAttemptsAfterFetch, targetVersion); - return; - } - if (fetchResponse.config == null) { - this.logger.debug('The fetch succeeded, but the backend had no updates.'); - return; - } - if (activatedConfigs == null) { - activatedConfigs = {}; - } - const updatedKeys = this.getChangedParams(fetchResponse.config, activatedConfigs); - if (updatedKeys.size === 0) { - this.logger.debug('Config was fetched, but no params changed.'); - return; - } - const configUpdate = { - getUpdatedKeys() { - return new Set(updatedKeys); - } - }; - this.executeAllListenerCallbacks(configUpdate); - } - catch (e) { - const errorMessage = e instanceof Error ? e.message : String(e); - const error = ERROR_FACTORY.create("update-not-fetched" /* ErrorCode.CONFIG_UPDATE_NOT_FETCHED */, { - originalErrorMessage: `Failed to auto-fetch config update: ${errorMessage}` - }); - this.propagateError(error); - } - } - async autoFetch(remainingAttempts, targetVersion) { - if (remainingAttempts === 0) { - const error = ERROR_FACTORY.create("update-not-fetched" /* ErrorCode.CONFIG_UPDATE_NOT_FETCHED */, { - originalErrorMessage: 'Unable to fetch the latest version of the template.' - }); - this.propagateError(error); - return; - } - const timeTillFetchSeconds = this.getRandomInt(4); - const timeTillFetchInMiliseconds = timeTillFetchSeconds * 1000; - await new Promise(resolve => setTimeout(resolve, timeTillFetchInMiliseconds)); - await this.fetchLatestConfig(remainingAttempts, targetVersion); - } - /** - * Processes a stream of real-time messages for configuration updates. - * This method reassembles fragmented messages, validates and parses the JSON, - * and automatically fetches a new config if a newer template version is available. - * It also handles server-specified retry intervals and propagates errors for - * invalid messages or when real-time updates are disabled. - */ - async handleNotifications(reader) { - let partialConfigUpdateMessage; - let currentConfigUpdateMessage = ''; - while (true) { - const { done, value } = await reader.read(); - if (done) { - break; - } - partialConfigUpdateMessage = this.decoder.decode(value, { stream: true }); - currentConfigUpdateMessage += partialConfigUpdateMessage; - if (partialConfigUpdateMessage.includes('}')) { - currentConfigUpdateMessage = this.parseAndValidateConfigUpdateMessage(currentConfigUpdateMessage); - if (currentConfigUpdateMessage.length === 0) { - continue; - } - try { - const jsonObject = JSON.parse(currentConfigUpdateMessage); - if (this.isEventListenersEmpty()) { - break; - } - if (REALTIME_DISABLED_KEY in jsonObject && - jsonObject[REALTIME_DISABLED_KEY] === true) { - const error = ERROR_FACTORY.create("realtime-unavailable" /* ErrorCode.CONFIG_UPDATE_UNAVAILABLE */, { - originalErrorMessage: 'The server is temporarily unavailable. Try again in a few minutes.' - }); - this.propagateError(error); - break; - } - if (TEMPLATE_VERSION_KEY in jsonObject) { - const oldTemplateVersion = await this.storage.getActiveConfigTemplateVersion(); - const targetTemplateVersion = Number(jsonObject[TEMPLATE_VERSION_KEY]); - if (oldTemplateVersion && - targetTemplateVersion > oldTemplateVersion) { - await this.autoFetch(MAXIMUM_FETCH_ATTEMPTS, targetTemplateVersion); - } - } - // This field in the response indicates that the realtime request should retry after the - // specified interval to establish a long-lived connection. This interval extends the - // backoff duration without affecting the number of retries, so it will not enter an - // exponential backoff state. - if (REALTIME_RETRY_INTERVAL in jsonObject) { - const retryIntervalSeconds = Number(jsonObject[REALTIME_RETRY_INTERVAL]); - await this.updateBackoffMetadataWithRetryInterval(retryIntervalSeconds); - } - } - catch (e) { - this.logger.debug('Unable to parse latest config update message.', e); - const errorMessage = e instanceof Error ? e.message : String(e); - this.propagateError(ERROR_FACTORY.create("update-message-invalid" /* ErrorCode.CONFIG_UPDATE_MESSAGE_INVALID */, { - originalErrorMessage: errorMessage - })); - } - currentConfigUpdateMessage = ''; - } - } - } - async listenForNotifications(reader) { - try { - await this.handleNotifications(reader); - } - catch (e) { - // If the real-time connection is at an unexpected lifecycle state when the app is - // backgrounded, it's expected closing the connection will throw an exception. - if (!this.isInBackground) { - // Otherwise, the real-time server connection was closed due to a transient issue. - this.logger.debug('Real-time connection was closed due to an exception.'); - } - } - } - /** - * Open the real-time connection, begin listening for updates, and auto-fetch when an update is - * received. - * - * If the connection is successful, this method will block on its thread while it reads the - * chunk-encoded HTTP body. When the connection closes, it attempts to reestablish the stream. - */ - async prepareAndBeginRealtimeHttpStream() { - if (!this.checkAndSetHttpConnectionFlagIfNotRunning()) { - return; - } - let backoffMetadata = await this.storage.getRealtimeBackoffMetadata(); - if (!backoffMetadata) { - backoffMetadata = { - backoffEndTimeMillis: new Date(NO_BACKOFF_TIME_IN_MILLIS), - numFailedStreams: NO_FAILED_REALTIME_STREAMS - }; - } - const backoffEndTime = backoffMetadata.backoffEndTimeMillis.getTime(); - if (Date.now() < backoffEndTime) { - await this.retryHttpConnectionWhenBackoffEnds(); - return; - } - let response; - let responseCode; - try { - response = await this.createRealtimeConnection(); - responseCode = response.status; - if (response.ok && response.body) { - this.resetRetryCount(); - await this.resetRealtimeBackoff(); - const reader = response.body.getReader(); - this.reader = reader; - // Start listening for realtime notifications. - await this.listenForNotifications(reader); - } - } - catch (error) { - if (this.isInBackground) { - // It's possible the app was backgrounded while the connection was open, which - // threw an exception trying to read the response. No real error here, so treat - // this as a success, even if we haven't read a 200 response code yet. - this.resetRetryCount(); - } - else { - //there might have been a transient error so the client will retry the connection. - this.logger.debug('Exception connecting to real-time RC backend. Retrying the connection...:', error); - } - } - finally { - // Close HTTP connection and associated streams. - await this.closeRealtimeHttpConnection(); - this.setIsHttpConnectionRunning(false); - // Update backoff metadata if the connection failed in the foreground. - const connectionFailed = !this.isInBackground && - (responseCode === undefined || - this.isStatusCodeRetryable(responseCode)); - if (connectionFailed) { - await this.updateBackoffMetadataWithLastFailedStreamConnectionTime(new Date()); - } - // If responseCode is null then no connection was made to server and the SDK should still retry. - if (connectionFailed || response?.ok) { - await this.retryHttpConnectionWhenBackoffEnds(); - } - else { - const errorMessage = `Unable to connect to the server. HTTP status code: ${responseCode}`; - const firebaseError = ERROR_FACTORY.create("stream-error" /* ErrorCode.CONFIG_UPDATE_STREAM_ERROR */, { - originalErrorMessage: errorMessage - }); - this.propagateError(firebaseError); - } - } - } - /** - * Checks whether connection can be made or not based on some conditions - * @returns booelean - */ - canEstablishStreamConnection() { - const hasActiveListeners = this.observers.size > 0; - const isNotDisabled = !this.isRealtimeDisabled; - const isNoConnectionActive = !this.isConnectionActive; - const inForeground = !this.isInBackground; - return (hasActiveListeners && - isNotDisabled && - isNoConnectionActive && - inForeground); - } - async makeRealtimeHttpConnection(delayMillis) { - if (!this.canEstablishStreamConnection()) { - return; - } - if (this.httpRetriesRemaining > 0) { - this.httpRetriesRemaining--; - await new Promise(resolve => setTimeout(resolve, delayMillis)); - void this.prepareAndBeginRealtimeHttpStream(); - } - else if (!this.isInBackground) { - const error = ERROR_FACTORY.create("stream-error" /* ErrorCode.CONFIG_UPDATE_STREAM_ERROR */, { - originalErrorMessage: 'Unable to connect to the server. Check your connection and try again.' - }); - this.propagateError(error); - } - } - async beginRealtime() { - if (this.observers.size > 0) { - await this.makeRealtimeHttpConnection(0); - } - } - /** - * Adds an observer to the realtime updates. - * @param observer The observer to add. - */ - addObserver(observer) { - this.observers.add(observer); - void this.beginRealtime(); - } - /** - * Removes an observer from the realtime updates. - * @param observer The observer to remove. - */ - removeObserver(observer) { - if (this.observers.has(observer)) { - this.observers.delete(observer); - } - } - /** - * Handles changes to the application's visibility state, managing the real-time connection. - * - * When the application is moved to the background, this method closes the existing - * real-time connection to save resources. When the application returns to the - * foreground, it attempts to re-establish the connection. - */ - async onVisibilityChange(visible) { - this.isInBackground = !visible; - if (!visible) { - await this.closeRealtimeHttpConnection(); - } - else if (visible) { - await this.beginRealtime(); - } - } -} - -/** - * @license - * Copyright 2020 Google LLC - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -function registerRemoteConfig() { - app._registerComponent(new component.Component(RC_COMPONENT_NAME, remoteConfigFactory, "PUBLIC" /* ComponentType.PUBLIC */).setMultipleInstances(true)); - app.registerVersion(name, version); - // BUILD_TARGET will be replaced by values like esm, cjs, etc during the compilation - app.registerVersion(name, version, 'cjs2020'); - function remoteConfigFactory(container, { options }) { - /* Dependencies */ - // getImmediate for FirebaseApp will always succeed - const app$1 = container.getProvider('app').getImmediate(); - // The following call will always succeed because rc has `import '@firebase/installations'` - const installations = container - .getProvider('installations-internal') - .getImmediate(); - // Normalizes optional inputs. - const { projectId, apiKey, appId } = app$1.options; - if (!projectId) { - throw ERROR_FACTORY.create("registration-project-id" /* ErrorCode.REGISTRATION_PROJECT_ID */); - } - if (!apiKey) { - throw ERROR_FACTORY.create("registration-api-key" /* ErrorCode.REGISTRATION_API_KEY */); - } - if (!appId) { - throw ERROR_FACTORY.create("registration-app-id" /* ErrorCode.REGISTRATION_APP_ID */); - } - const namespace = options?.templateId || 'firebase'; - const storage = util.isIndexedDBAvailable() - ? new IndexedDbStorage(appId, app$1.name, namespace) - : new InMemoryStorage(); - const storageCache = new StorageCache(storage); - const logger$1 = new logger.Logger(name); - // Sets ERROR as the default log level. - // See RemoteConfig#setLogLevel for corresponding normalization to ERROR log level. - logger$1.logLevel = logger.LogLevel.ERROR; - const restClient = new RestClient(installations, - // Uses the JS SDK version, by which the RC package version can be deduced, if necessary. - app.SDK_VERSION, namespace, projectId, apiKey, appId); - const retryingClient = new RetryingClient(restClient, storage); - const cachingClient = new CachingClient(retryingClient, storage, storageCache, logger$1); - const realtimeHandler = new RealtimeHandler(installations, storage, app.SDK_VERSION, namespace, projectId, apiKey, appId, logger$1, storageCache, cachingClient); - const remoteConfigInstance = new RemoteConfig(app$1, cachingClient, storageCache, storage, logger$1, realtimeHandler); - // Starts warming cache. - // eslint-disable-next-line @typescript-eslint/no-floating-promises - ensureInitialized(remoteConfigInstance); - return remoteConfigInstance; - } -} - -/** - * @license - * Copyright 2020 Google LLC - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -// This API is put in a separate file, so we can stub fetchConfig and activate in tests. -// It's not possible to stub standalone functions from the same module. -/** - * - * Performs fetch and activate operations, as a convenience. - * - * @param remoteConfig - The {@link RemoteConfig} instance. - * - * @returns A `Promise` which resolves to true if the current call activated the fetched configs. - * If the fetched configs were already activated, the `Promise` will resolve to false. - * - * @public - */ -async function fetchAndActivate(remoteConfig) { - remoteConfig = util.getModularInstance(remoteConfig); - await fetchConfig(remoteConfig); - return activate(remoteConfig); -} -/** - * This method provides two different checks: - * - * 1. Check if IndexedDB exists in the browser environment. - * 2. Check if the current browser context allows IndexedDB `open()` calls. - * - * @returns A `Promise` which resolves to true if a {@link RemoteConfig} instance - * can be initialized in this environment, or false if it cannot. - * @public - */ -async function isSupported() { - if (!util.isIndexedDBAvailable()) { - return false; - } - try { - const isDBOpenable = await util.validateIndexedDBOpenable(); - return isDBOpenable; - } - catch (error) { - return false; - } -} - -/** - * The Firebase Remote Config Web SDK. - * This SDK does not work in a Node.js environment. - * - * @packageDocumentation - */ -/** register component and version */ -registerRemoteConfig(); - -exports.activate = activate; -exports.ensureInitialized = ensureInitialized; -exports.fetchAndActivate = fetchAndActivate; -exports.fetchConfig = fetchConfig; -exports.getAll = getAll; -exports.getBoolean = getBoolean; -exports.getNumber = getNumber; -exports.getRemoteConfig = getRemoteConfig; -exports.getString = getString; -exports.getValue = getValue; -exports.isSupported = isSupported; -exports.onConfigUpdate = onConfigUpdate; -exports.setCustomSignals = setCustomSignals; -exports.setLogLevel = setLogLevel; -//# sourceMappingURL=index.cjs.js.map |