1234 lines
49 KiB
JavaScript
1234 lines
49 KiB
JavaScript
import { _getProvider, getApp, _registerComponent, registerVersion, SDK_VERSION } from '@firebase/app';
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import { ErrorFactory, FirebaseError, getModularInstance, calculateBackoffMillis, isIndexedDBAvailable, validateIndexedDBOpenable } from '@firebase/util';
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import { Component } from '@firebase/component';
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import { LogLevel, Logger } from '@firebase/logger';
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import '@firebase/installations';
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const name = "@firebase/remote-config";
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const version = "0.4.5";
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/**
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* @license
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* Copyright 2019 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* Shims a minimal AbortSignal.
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*
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* <p>AbortController's AbortSignal conveniently decouples fetch timeout logic from other aspects
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* of networking, such as retries. Firebase doesn't use AbortController enough to justify a
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* polyfill recommendation, like we do with the Fetch API, but this minimal shim can easily be
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* swapped out if/when we do.
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*/
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class RemoteConfigAbortSignal {
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constructor() {
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this.listeners = [];
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}
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addEventListener(listener) {
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this.listeners.push(listener);
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}
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abort() {
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this.listeners.forEach(listener => listener());
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}
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}
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/**
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* @license
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* Copyright 2020 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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const RC_COMPONENT_NAME = 'remote-config';
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/**
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* @license
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* Copyright 2019 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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const ERROR_DESCRIPTION_MAP = {
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["registration-window" /* ErrorCode.REGISTRATION_WINDOW */]: 'Undefined window object. This SDK only supports usage in a browser environment.',
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["registration-project-id" /* ErrorCode.REGISTRATION_PROJECT_ID */]: 'Undefined project identifier. Check Firebase app initialization.',
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["registration-api-key" /* ErrorCode.REGISTRATION_API_KEY */]: 'Undefined API key. Check Firebase app initialization.',
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["registration-app-id" /* ErrorCode.REGISTRATION_APP_ID */]: 'Undefined app identifier. Check Firebase app initialization.',
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["storage-open" /* ErrorCode.STORAGE_OPEN */]: 'Error thrown when opening storage. Original error: {$originalErrorMessage}.',
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["storage-get" /* ErrorCode.STORAGE_GET */]: 'Error thrown when reading from storage. Original error: {$originalErrorMessage}.',
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["storage-set" /* ErrorCode.STORAGE_SET */]: 'Error thrown when writing to storage. Original error: {$originalErrorMessage}.',
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["storage-delete" /* ErrorCode.STORAGE_DELETE */]: 'Error thrown when deleting from storage. Original error: {$originalErrorMessage}.',
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["fetch-client-network" /* ErrorCode.FETCH_NETWORK */]: 'Fetch client failed to connect to a network. Check Internet connection.' +
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' Original error: {$originalErrorMessage}.',
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["fetch-timeout" /* ErrorCode.FETCH_TIMEOUT */]: 'The config fetch request timed out. ' +
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' Configure timeout using "fetchTimeoutMillis" SDK setting.',
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["fetch-throttle" /* ErrorCode.FETCH_THROTTLE */]: 'The config fetch request timed out while in an exponential backoff state.' +
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' Configure timeout using "fetchTimeoutMillis" SDK setting.' +
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' Unix timestamp in milliseconds when fetch request throttling ends: {$throttleEndTimeMillis}.',
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["fetch-client-parse" /* ErrorCode.FETCH_PARSE */]: 'Fetch client could not parse response.' +
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' Original error: {$originalErrorMessage}.',
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["fetch-status" /* ErrorCode.FETCH_STATUS */]: 'Fetch server returned an HTTP error status. HTTP status: {$httpStatus}.',
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["indexed-db-unavailable" /* ErrorCode.INDEXED_DB_UNAVAILABLE */]: 'Indexed DB is not supported by current browser'
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};
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const ERROR_FACTORY = new ErrorFactory('remoteconfig' /* service */, 'Remote Config' /* service name */, ERROR_DESCRIPTION_MAP);
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// Note how this is like typeof/instanceof, but for ErrorCode.
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function hasErrorCode(e, errorCode) {
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return e instanceof FirebaseError && e.code.indexOf(errorCode) !== -1;
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}
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/**
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* @license
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* Copyright 2019 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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const DEFAULT_VALUE_FOR_BOOLEAN = false;
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const DEFAULT_VALUE_FOR_STRING = '';
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const DEFAULT_VALUE_FOR_NUMBER = 0;
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const BOOLEAN_TRUTHY_VALUES = ['1', 'true', 't', 'yes', 'y', 'on'];
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class Value {
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constructor(_source, _value = DEFAULT_VALUE_FOR_STRING) {
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this._source = _source;
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this._value = _value;
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}
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asString() {
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return this._value;
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}
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asBoolean() {
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if (this._source === 'static') {
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return DEFAULT_VALUE_FOR_BOOLEAN;
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}
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return BOOLEAN_TRUTHY_VALUES.indexOf(this._value.toLowerCase()) >= 0;
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}
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asNumber() {
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if (this._source === 'static') {
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return DEFAULT_VALUE_FOR_NUMBER;
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}
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let num = Number(this._value);
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if (isNaN(num)) {
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num = DEFAULT_VALUE_FOR_NUMBER;
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}
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return num;
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}
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getSource() {
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return this._source;
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}
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}
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/**
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* @license
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* Copyright 2020 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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*
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* @param app - The {@link @firebase/app#FirebaseApp} instance.
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* @returns A {@link RemoteConfig} instance.
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*
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* @public
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*/
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function getRemoteConfig(app = getApp()) {
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app = getModularInstance(app);
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const rcProvider = _getProvider(app, RC_COMPONENT_NAME);
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return rcProvider.getImmediate();
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}
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/**
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* Makes the last fetched config available to the getters.
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* @param remoteConfig - The {@link RemoteConfig} instance.
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* @returns A `Promise` which resolves to true if the current call activated the fetched configs.
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* If the fetched configs were already activated, the `Promise` will resolve to false.
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*
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* @public
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*/
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async function activate(remoteConfig) {
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const rc = getModularInstance(remoteConfig);
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const [lastSuccessfulFetchResponse, activeConfigEtag] = await Promise.all([
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rc._storage.getLastSuccessfulFetchResponse(),
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rc._storage.getActiveConfigEtag()
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]);
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if (!lastSuccessfulFetchResponse ||
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!lastSuccessfulFetchResponse.config ||
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!lastSuccessfulFetchResponse.eTag ||
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lastSuccessfulFetchResponse.eTag === activeConfigEtag) {
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// Either there is no successful fetched config, or is the same as current active
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// config.
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return false;
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}
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await Promise.all([
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rc._storageCache.setActiveConfig(lastSuccessfulFetchResponse.config),
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rc._storage.setActiveConfigEtag(lastSuccessfulFetchResponse.eTag)
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]);
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return true;
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}
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/**
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* Ensures the last activated config are available to the getters.
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* @param remoteConfig - The {@link RemoteConfig} instance.
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*
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* @returns A `Promise` that resolves when the last activated config is available to the getters.
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* @public
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*/
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function ensureInitialized(remoteConfig) {
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const rc = getModularInstance(remoteConfig);
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if (!rc._initializePromise) {
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rc._initializePromise = rc._storageCache.loadFromStorage().then(() => {
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rc._isInitializationComplete = true;
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});
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}
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return rc._initializePromise;
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}
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/**
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* Fetches and caches configuration from the Remote Config service.
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* @param remoteConfig - The {@link RemoteConfig} instance.
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* @public
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*/
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async function fetchConfig(remoteConfig) {
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const rc = getModularInstance(remoteConfig);
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// Aborts the request after the given timeout, causing the fetch call to
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// reject with an `AbortError`.
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//
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// <p>Aborting after the request completes is a no-op, so we don't need a
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// corresponding `clearTimeout`.
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//
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// Locating abort logic here because:
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// * it uses a developer setting (timeout)
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// * it applies to all retries (like curl's max-time arg)
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// * it is consistent with the Fetch API's signal input
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const abortSignal = new RemoteConfigAbortSignal();
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setTimeout(async () => {
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// Note a very low delay, eg < 10ms, can elapse before listeners are initialized.
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abortSignal.abort();
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}, rc.settings.fetchTimeoutMillis);
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// Catches *all* errors thrown by client so status can be set consistently.
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try {
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await rc._client.fetch({
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cacheMaxAgeMillis: rc.settings.minimumFetchIntervalMillis,
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signal: abortSignal
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});
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await rc._storageCache.setLastFetchStatus('success');
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}
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catch (e) {
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const lastFetchStatus = hasErrorCode(e, "fetch-throttle" /* ErrorCode.FETCH_THROTTLE */)
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? 'throttle'
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: 'failure';
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await rc._storageCache.setLastFetchStatus(lastFetchStatus);
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throw e;
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}
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}
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/**
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* Gets all config.
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*
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* @param remoteConfig - The {@link RemoteConfig} instance.
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* @returns All config.
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*
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* @public
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*/
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function getAll(remoteConfig) {
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const rc = getModularInstance(remoteConfig);
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return getAllKeys(rc._storageCache.getActiveConfig(), rc.defaultConfig).reduce((allConfigs, key) => {
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allConfigs[key] = getValue(remoteConfig, key);
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return allConfigs;
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}, {});
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}
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/**
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* Gets the value for the given key as a boolean.
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*
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* Convenience method for calling <code>remoteConfig.getValue(key).asBoolean()</code>.
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*
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* @param remoteConfig - The {@link RemoteConfig} instance.
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* @param key - The name of the parameter.
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*
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* @returns The value for the given key as a boolean.
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* @public
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*/
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function getBoolean(remoteConfig, key) {
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return getValue(getModularInstance(remoteConfig), key).asBoolean();
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}
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/**
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* Gets the value for the given key as a number.
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*
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* Convenience method for calling <code>remoteConfig.getValue(key).asNumber()</code>.
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*
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* @param remoteConfig - The {@link RemoteConfig} instance.
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* @param key - The name of the parameter.
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*
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* @returns The value for the given key as a number.
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*
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* @public
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*/
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function getNumber(remoteConfig, key) {
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return getValue(getModularInstance(remoteConfig), key).asNumber();
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}
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/**
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* Gets the value for the given key as a string.
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* Convenience method for calling <code>remoteConfig.getValue(key).asString()</code>.
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*
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* @param remoteConfig - The {@link RemoteConfig} instance.
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* @param key - The name of the parameter.
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*
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* @returns The value for the given key as a string.
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*
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* @public
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*/
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function getString(remoteConfig, key) {
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return getValue(getModularInstance(remoteConfig), key).asString();
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}
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/**
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* Gets the {@link Value} for the given key.
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*
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* @param remoteConfig - The {@link RemoteConfig} instance.
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* @param key - The name of the parameter.
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*
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* @returns The value for the given key.
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*
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* @public
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*/
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function getValue(remoteConfig, key) {
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const rc = getModularInstance(remoteConfig);
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if (!rc._isInitializationComplete) {
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rc._logger.debug(`A value was requested for key "${key}" before SDK initialization completed.` +
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' Await on ensureInitialized if the intent was to get a previously activated value.');
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}
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const activeConfig = rc._storageCache.getActiveConfig();
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if (activeConfig && activeConfig[key] !== undefined) {
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return new Value('remote', activeConfig[key]);
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}
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else if (rc.defaultConfig && rc.defaultConfig[key] !== undefined) {
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return new Value('default', String(rc.defaultConfig[key]));
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}
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rc._logger.debug(`Returning static value for key "${key}".` +
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' Define a default or remote value if this is unintentional.');
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return new Value('static');
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}
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/**
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* Defines the log level to use.
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*
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* @param remoteConfig - The {@link RemoteConfig} instance.
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* @param logLevel - The log level to set.
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*
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* @public
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*/
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function setLogLevel(remoteConfig, logLevel) {
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const rc = getModularInstance(remoteConfig);
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switch (logLevel) {
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case 'debug':
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rc._logger.logLevel = LogLevel.DEBUG;
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break;
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case 'silent':
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rc._logger.logLevel = LogLevel.SILENT;
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break;
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default:
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rc._logger.logLevel = LogLevel.ERROR;
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}
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}
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/**
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* Dedupes and returns an array of all the keys of the received objects.
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*/
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function getAllKeys(obj1 = {}, obj2 = {}) {
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return Object.keys(Object.assign(Object.assign({}, obj1), obj2));
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}
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/**
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* @license
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* Copyright 2019 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* Implements the {@link RemoteConfigClient} abstraction with success response caching.
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*
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* <p>Comparable to the browser's Cache API for responses, but the Cache API requires a Service
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* Worker, which requires HTTPS, which would significantly complicate SDK installation. Also, the
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* Cache API doesn't support matching entries by time.
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*/
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class CachingClient {
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constructor(client, storage, storageCache, logger) {
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this.client = client;
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this.storage = storage;
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this.storageCache = storageCache;
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this.logger = logger;
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}
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/**
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* Returns true if the age of the cached fetched configs is less than or equal to
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* {@link Settings#minimumFetchIntervalInSeconds}.
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*
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* <p>This is comparable to passing `headers = { 'Cache-Control': max-age <maxAge> }` to the
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* native Fetch API.
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*
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* <p>Visible for testing.
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*/
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isCachedDataFresh(cacheMaxAgeMillis, lastSuccessfulFetchTimestampMillis) {
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// Cache can only be fresh if it's populated.
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if (!lastSuccessfulFetchTimestampMillis) {
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this.logger.debug('Config fetch cache check. Cache unpopulated.');
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return false;
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}
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// Calculates age of cache entry.
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const cacheAgeMillis = Date.now() - lastSuccessfulFetchTimestampMillis;
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const isCachedDataFresh = cacheAgeMillis <= cacheMaxAgeMillis;
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this.logger.debug('Config fetch cache check.' +
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` Cache age millis: ${cacheAgeMillis}.` +
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` Cache max age millis (minimumFetchIntervalMillis setting): ${cacheMaxAgeMillis}.` +
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` Is cache hit: ${isCachedDataFresh}.`);
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return isCachedDataFresh;
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}
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async fetch(request) {
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// Reads from persisted storage to avoid cache miss if callers don't wait on initialization.
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const [lastSuccessfulFetchTimestampMillis, lastSuccessfulFetchResponse] = await Promise.all([
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this.storage.getLastSuccessfulFetchTimestampMillis(),
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this.storage.getLastSuccessfulFetchResponse()
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]);
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// Exits early on cache hit.
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if (lastSuccessfulFetchResponse &&
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this.isCachedDataFresh(request.cacheMaxAgeMillis, lastSuccessfulFetchTimestampMillis)) {
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return lastSuccessfulFetchResponse;
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}
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// Deviates from pure decorator by not honoring a passed ETag since we don't have a public API
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// that allows the caller to pass an ETag.
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request.eTag =
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lastSuccessfulFetchResponse && lastSuccessfulFetchResponse.eTag;
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// Falls back to service on cache miss.
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const response = await this.client.fetch(request);
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// Fetch throws for non-success responses, so success is guaranteed here.
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const storageOperations = [
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// Uses write-through cache for consistency with synchronous public API.
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this.storageCache.setLastSuccessfulFetchTimestampMillis(Date.now())
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];
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if (response.status === 200) {
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// Caches response only if it has changed, ie non-304 responses.
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storageOperations.push(this.storage.setLastSuccessfulFetchResponse(response));
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}
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await Promise.all(storageOperations);
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return response;
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}
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}
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/**
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* @license
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* Copyright 2019 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
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|
*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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|
* 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.
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|
*/
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/**
|
|
* 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 || '*'
|
|
};
|
|
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()
|
|
/* 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 === null || originalError === void 0 ? void 0 : originalError.name) === 'AbortError') {
|
|
errorCode = "fetch-timeout" /* ErrorCode.FETCH_TIMEOUT */;
|
|
}
|
|
throw ERROR_FACTORY.create(errorCode, {
|
|
originalErrorMessage: originalError === null || originalError === void 0 ? void 0 : originalError.message
|
|
});
|
|
}
|
|
let status = response.status;
|
|
// Normalizes nullable header to optional.
|
|
const responseEtag = response.headers.get('ETag') || undefined;
|
|
let config;
|
|
let state;
|
|
// 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 === null || originalError === void 0 ? void 0 : originalError.message
|
|
});
|
|
}
|
|
config = responseBody['entries'];
|
|
state = responseBody['state'];
|
|
}
|
|
// 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 };
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @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 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() + 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/FirebasePrivate/firebase-js-sdk/blob/master/packages/firebase/index.d.ts|interface documentation} for method descriptions.
|
|
*/
|
|
class RemoteConfig {
|
|
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) {
|
|
this.app = app;
|
|
this._client = _client;
|
|
this._storageCache = _storageCache;
|
|
this._storage = _storage;
|
|
this._logger = _logger;
|
|
/**
|
|
* Tracks completion of initialization promise.
|
|
* @internal
|
|
*/
|
|
this._isInitializationComplete = false;
|
|
this.settings = {
|
|
fetchTimeoutMillis: DEFAULT_FETCH_TIMEOUT_MILLIS,
|
|
minimumFetchIntervalMillis: DEFAULT_CACHE_MAX_AGE_MILLIS
|
|
};
|
|
this.defaultConfig = {};
|
|
}
|
|
get fetchTimeMillis() {
|
|
return this._storageCache.getLastSuccessfulFetchTimestampMillis() || -1;
|
|
}
|
|
get lastFetchStatus() {
|
|
return this._storageCache.getLastFetchStatus() || 'no-fetch-yet';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @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 === null || originalError === void 0 ? void 0 : 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 === null || error === void 0 ? void 0 : error.message
|
|
}));
|
|
}
|
|
});
|
|
}
|
|
/**
|
|
* Abstracts data persistence.
|
|
*/
|
|
class 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()) {
|
|
this.appId = appId;
|
|
this.appName = appName;
|
|
this.namespace = namespace;
|
|
this.openDbPromise = openDbPromise;
|
|
}
|
|
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');
|
|
}
|
|
async get(key) {
|
|
const db = await this.openDbPromise;
|
|
return new Promise((resolve, reject) => {
|
|
const transaction = db.transaction([APP_NAMESPACE_STORE], 'readonly');
|
|
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 === null || e === void 0 ? void 0 : e.message
|
|
}));
|
|
}
|
|
});
|
|
}
|
|
async set(key, value) {
|
|
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.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 === null || e === void 0 ? void 0 : e.message
|
|
}));
|
|
}
|
|
});
|
|
}
|
|
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 === null || e === void 0 ? void 0 : e.message
|
|
}));
|
|
}
|
|
});
|
|
}
|
|
// Facilitates composite key functionality (which is unsupported in IE).
|
|
createCompositeKey(key) {
|
|
return [this.appId, this.appName, this.namespace, key].join();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @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;
|
|
}
|
|
/**
|
|
* Read-ahead getter
|
|
*/
|
|
async loadFromStorage() {
|
|
const lastFetchStatusPromise = this.storage.getLastFetchStatus();
|
|
const lastSuccessfulFetchTimestampMillisPromise = this.storage.getLastSuccessfulFetchTimestampMillis();
|
|
const activeConfigPromise = this.storage.getActiveConfig();
|
|
// 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;
|
|
}
|
|
}
|
|
/**
|
|
* 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);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @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() {
|
|
_registerComponent(new Component(RC_COMPONENT_NAME, remoteConfigFactory, "PUBLIC" /* ComponentType.PUBLIC */).setMultipleInstances(true));
|
|
registerVersion(name, version);
|
|
// BUILD_TARGET will be replaced by values like esm5, esm2017, cjs5, etc during the compilation
|
|
registerVersion(name, version, 'esm2017');
|
|
function remoteConfigFactory(container, { instanceIdentifier: namespace }) {
|
|
/* Dependencies */
|
|
// getImmediate for FirebaseApp will always succeed
|
|
const app = container.getProvider('app').getImmediate();
|
|
// The following call will always succeed because rc has `import '@firebase/installations'`
|
|
const installations = container
|
|
.getProvider('installations-internal')
|
|
.getImmediate();
|
|
// Guards against the SDK being used in non-browser environments.
|
|
if (typeof window === 'undefined') {
|
|
throw ERROR_FACTORY.create("registration-window" /* ErrorCode.REGISTRATION_WINDOW */);
|
|
}
|
|
// Guards against the SDK being used when indexedDB is not available.
|
|
if (!isIndexedDBAvailable()) {
|
|
throw ERROR_FACTORY.create("indexed-db-unavailable" /* ErrorCode.INDEXED_DB_UNAVAILABLE */);
|
|
}
|
|
// Normalizes optional inputs.
|
|
const { projectId, apiKey, appId } = app.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 */);
|
|
}
|
|
namespace = namespace || 'firebase';
|
|
const storage = new Storage(appId, app.name, namespace);
|
|
const storageCache = new StorageCache(storage);
|
|
const logger = new Logger(name);
|
|
// Sets ERROR as the default log level.
|
|
// See RemoteConfig#setLogLevel for corresponding normalization to ERROR log level.
|
|
logger.logLevel = LogLevel.ERROR;
|
|
const restClient = new RestClient(installations,
|
|
// Uses the JS SDK version, by which the RC package version can be deduced, if necessary.
|
|
SDK_VERSION, namespace, projectId, apiKey, appId);
|
|
const retryingClient = new RetryingClient(restClient, storage);
|
|
const cachingClient = new CachingClient(retryingClient, storage, storageCache, logger);
|
|
const remoteConfigInstance = new RemoteConfig(app, cachingClient, storageCache, storage, logger);
|
|
// 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 = 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 (!isIndexedDBAvailable()) {
|
|
return false;
|
|
}
|
|
try {
|
|
const isDBOpenable = await 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();
|
|
|
|
export { activate, ensureInitialized, fetchAndActivate, fetchConfig, getAll, getBoolean, getNumber, getRemoteConfig, getString, getValue, isSupported, setLogLevel };
|
|
//# sourceMappingURL=index.esm2017.js.map
|