sdk, del

51 files changed, 0 insertions, 8519 deletions

diff --git a/frontend-old/node_modules/@firebase/remote-config/README.md b/frontend-old/node_modules/@firebase/remote-config/README.md
deleted file mode 100644
index 1b21bbe..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/README.md
+++ /dev/null
@@ -1,27 +0,0 @@
-# @firebase/remote-config
-
-This is the [Remote Config](https://firebase.google.com/docs/remote-config/) component of the
-[Firebase JS SDK](https://www.npmjs.com/package/firebase).
-
-**This package is not intended for direct usage, and should only be used via the officially
-supported [firebase](https://www.npmjs.com/package/firebase) package.**
-
-## Contributing
-
-Setup:
-
-1. Run `yarn` in repo root
-
-Format:
-
-1. Run `yarn prettier` in RC package
-
-Unit test:
-
-1. Run `yarn test` in RC package
-
-End-to-end test:
-
-1. Run `yarn build` in RC package
-1. Run `yarn build` in Firebase package
-1. Open test_app/index.html in a browser
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/index.esm.js b/frontend-old/node_modules/@firebase/remote-config/dist/esm/index.esm.js
deleted file mode 100644
index efaf7cb..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/index.esm.js
+++ /dev/null
@@ -1,2120 +0,0 @@
-import { _getProvider, getApp, _registerComponent, registerVersion, SDK_VERSION } from '@firebase/app';
-import { ErrorFactory, FirebaseError, getModularInstance, deepEqual, calculateBackoffMillis, assert, isIndexedDBAvailable, validateIndexedDBOpenable } from '@firebase/util';
-import { Component } from '@firebase/component';
-import { LogLevel, Logger } from '@firebase/logger';
-import '@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 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 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 = getApp(), options = {}) {
-    app = getModularInstance(app);
-    const rcProvider = _getProvider(app, RC_COMPONENT_NAME);
-    if (rcProvider.isInitialized()) {
-        const initialOptions = rcProvider.getOptions();
-        if (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 = 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 = 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 = 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 = 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(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(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(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 = 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 = getModularInstance(remoteConfig);
-    switch (logLevel) {
-        case 'debug':
-            rc._logger.logLevel = LogLevel.DEBUG;
-            break;
-        case 'silent':
-            rc._logger.logLevel = LogLevel.SILENT;
-            break;
-        default:
-            rc._logger.logLevel = 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 = 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 = 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 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/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_ = {};
-        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) {
-        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) {
-        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 = 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() {
-    _registerComponent(new Component(RC_COMPONENT_NAME, remoteConfigFactory, "PUBLIC" /* ComponentType.PUBLIC */).setMultipleInstances(true));
-    registerVersion(name, version);
-    // BUILD_TARGET will be replaced by values like esm, cjs, etc during the compilation
-    registerVersion(name, version, 'esm2020');
-    function remoteConfigFactory(container, { options }) {
-        /* 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();
-        // 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 */);
-        }
-        const namespace = options?.templateId || 'firebase';
-        const storage = isIndexedDBAvailable()
-            ? new IndexedDbStorage(appId, app.name, namespace)
-            : new InMemoryStorage();
-        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 realtimeHandler = new RealtimeHandler(installations, storage, SDK_VERSION, namespace, projectId, apiKey, appId, logger, storageCache, cachingClient);
-        const remoteConfigInstance = new RemoteConfig(app, cachingClient, storageCache, storage, logger, 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 = 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, onConfigUpdate, setCustomSignals, setLogLevel };
-//# sourceMappingURL=index.esm.js.map
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/index.esm.js.map b/frontend-old/node_modules/@firebase/remote-config/dist/esm/index.esm.js.map
deleted file mode 100644
index b9305c6..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/index.esm.js.map
+++ /dev/null
@@ -1 +0,0 @@
-{"version":3,"file":"index.esm.js","sources":["../../src/client/remote_config_fetch_client.ts","../../src/constants.ts","../../src/errors.ts","../../src/value.ts","../../src/api.ts","../../src/client/caching_client.ts","../../src/language.ts","../../src/client/rest_client.ts","../../src/client/retrying_client.ts","../../src/remote_config.ts","../../src/storage/storage.ts","../../src/storage/storage_cache.ts","../../src/client/eventEmitter.ts","../../src/client/visibility_monitor.ts","../../src/client/realtime_handler.ts","../../src/register.ts","../../src/api2.ts","../../src/index.ts"],"sourcesContent":["/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { CustomSignals, FetchResponse, FetchType } from '../public_types';\n\n/**\n * Defines a client, as in https://en.wikipedia.org/wiki/Client%E2%80%93server_model, for the\n * Remote Config server (https://firebase.google.com/docs/reference/remote-config/rest).\n *\n * <p>Abstracts throttle, response cache and network implementation details.\n *\n * <p>Modeled after the native {@link GlobalFetch} interface, which is relatively modern and\n * convenient, but simplified for Remote Config's use case.\n *\n * Disambiguation: {@link GlobalFetch} interface and the Remote Config service define \"fetch\"\n * methods. The RestClient uses the former to make HTTP calls. This interface abstracts the latter.\n */\nexport interface RemoteConfigFetchClient {\n  /**\n   * @throws if response status is not 200 or 304.\n   */\n  fetch(request: FetchRequest): Promise<FetchResponse>;\n}\n\n/**\n * Shims a minimal AbortSignal.\n *\n * <p>AbortController's AbortSignal conveniently decouples fetch timeout logic from other aspects\n * of networking, such as retries. Firebase doesn't use AbortController enough to justify a\n * polyfill recommendation, like we do with the Fetch API, but this minimal shim can easily be\n * swapped out if/when we do.\n */\nexport class RemoteConfigAbortSignal {\n  listeners: Array<() => void> = [];\n  addEventListener(listener: () => void): void {\n    this.listeners.push(listener);\n  }\n  abort(): void {\n    this.listeners.forEach(listener => listener());\n  }\n}\n\n/**\n * Defines per-request inputs for the Remote Config fetch request.\n *\n * <p>Modeled after the native {@link Request} interface, but simplified for Remote Config's\n * use case.\n */\nexport interface FetchRequest {\n  /**\n   * Uses cached config if it is younger than this age.\n   *\n   * <p>Required because it's defined by settings, which always have a value.\n   *\n   * <p>Comparable to passing `headers = { 'Cache-Control': max-age <maxAge> }` to the native\n   * Fetch API.\n   */\n  cacheMaxAgeMillis: number;\n\n  /**\n   * An event bus for the signal to abort a request.\n   *\n   * <p>Required because all requests should be abortable.\n   *\n   * <p>Comparable to the native\n   * Fetch API's \"signal\" field on its request configuration object\n   * https://fetch.spec.whatwg.org/#dom-requestinit-signal.\n   *\n   * <p>Disambiguation: Remote Config commonly refers to API inputs as\n   * \"signals\". See the private ConfigFetchRequestBody interface for those:\n   * http://google3/firebase/remote_config/web/src/core/rest_client.ts?l=14&rcl=255515243.\n   */\n  signal: RemoteConfigAbortSignal;\n\n  /**\n   * The ETag header value from the last response.\n   *\n   * <p>Optional in case this is the first request.\n   *\n   * <p>Comparable to passing `headers = { 'If-None-Match': <eTag> }` to the native Fetch API.\n   */\n  eTag?: string;\n\n  /** The custom signals stored for the app instance.\n   *\n   * <p>Optional in case no custom signals are set for the instance.\n   */\n  customSignals?: CustomSignals;\n\n  /**\n   * The type of fetch to perform, such as a regular fetch or a real-time fetch.\n   *\n   * Optional as not all fetch requests need to be distinguished.\n   */\n  fetchType?: FetchType;\n\n  /**\n   * The number of fetch attempts made so far for this request.\n   *\n   * Optional as not all fetch requests are part of a retry series.\n   */\n  fetchAttempt?: number;\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nexport const RC_COMPONENT_NAME = 'remote-config';\nexport const RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS = 100;\nexport const RC_CUSTOM_SIGNAL_KEY_MAX_LENGTH = 250;\nexport const RC_CUSTOM_SIGNAL_VALUE_MAX_LENGTH = 500;\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { ErrorFactory, FirebaseError } from '@firebase/util';\n\nexport const enum ErrorCode {\n  ALREADY_INITIALIZED = 'already-initialized',\n  REGISTRATION_WINDOW = 'registration-window',\n  REGISTRATION_PROJECT_ID = 'registration-project-id',\n  REGISTRATION_API_KEY = 'registration-api-key',\n  REGISTRATION_APP_ID = 'registration-app-id',\n  STORAGE_OPEN = 'storage-open',\n  STORAGE_GET = 'storage-get',\n  STORAGE_SET = 'storage-set',\n  STORAGE_DELETE = 'storage-delete',\n  FETCH_NETWORK = 'fetch-client-network',\n  FETCH_TIMEOUT = 'fetch-timeout',\n  FETCH_THROTTLE = 'fetch-throttle',\n  FETCH_PARSE = 'fetch-client-parse',\n  FETCH_STATUS = 'fetch-status',\n  INDEXED_DB_UNAVAILABLE = 'indexed-db-unavailable',\n  CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS = 'custom-signal-max-allowed-signals',\n  CONFIG_UPDATE_STREAM_ERROR = 'stream-error',\n  CONFIG_UPDATE_UNAVAILABLE = 'realtime-unavailable',\n  CONFIG_UPDATE_MESSAGE_INVALID = 'update-message-invalid',\n  CONFIG_UPDATE_NOT_FETCHED = 'update-not-fetched'\n}\n\nconst ERROR_DESCRIPTION_MAP: { readonly [key in ErrorCode]: string } = {\n  [ErrorCode.ALREADY_INITIALIZED]: 'Remote Config already initialized',\n  [ErrorCode.REGISTRATION_WINDOW]:\n    'Undefined window object. This SDK only supports usage in a browser environment.',\n  [ErrorCode.REGISTRATION_PROJECT_ID]:\n    'Undefined project identifier. Check Firebase app initialization.',\n  [ErrorCode.REGISTRATION_API_KEY]:\n    'Undefined API key. Check Firebase app initialization.',\n  [ErrorCode.REGISTRATION_APP_ID]:\n    'Undefined app identifier. Check Firebase app initialization.',\n  [ErrorCode.STORAGE_OPEN]:\n    'Error thrown when opening storage. Original error: {$originalErrorMessage}.',\n  [ErrorCode.STORAGE_GET]:\n    'Error thrown when reading from storage. Original error: {$originalErrorMessage}.',\n  [ErrorCode.STORAGE_SET]:\n    'Error thrown when writing to storage. Original error: {$originalErrorMessage}.',\n  [ErrorCode.STORAGE_DELETE]:\n    'Error thrown when deleting from storage. Original error: {$originalErrorMessage}.',\n  [ErrorCode.FETCH_NETWORK]:\n    'Fetch client failed to connect to a network. Check Internet connection.' +\n    ' Original error: {$originalErrorMessage}.',\n  [ErrorCode.FETCH_TIMEOUT]:\n    'The config fetch request timed out. ' +\n    ' Configure timeout using \"fetchTimeoutMillis\" SDK setting.',\n  [ErrorCode.FETCH_THROTTLE]:\n    'The config fetch request timed out while in an exponential backoff state.' +\n    ' Configure timeout using \"fetchTimeoutMillis\" SDK setting.' +\n    ' Unix timestamp in milliseconds when fetch request throttling ends: {$throttleEndTimeMillis}.',\n  [ErrorCode.FETCH_PARSE]:\n    'Fetch client could not parse response.' +\n    ' Original error: {$originalErrorMessage}.',\n  [ErrorCode.FETCH_STATUS]:\n    'Fetch server returned an HTTP error status. HTTP status: {$httpStatus}.',\n  [ErrorCode.INDEXED_DB_UNAVAILABLE]:\n    'Indexed DB is not supported by current browser',\n  [ErrorCode.CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS]:\n    'Setting more than {$maxSignals} custom signals is not supported.',\n  [ErrorCode.CONFIG_UPDATE_STREAM_ERROR]:\n    'The stream was not able to connect to the backend: {$originalErrorMessage}.',\n  [ErrorCode.CONFIG_UPDATE_UNAVAILABLE]:\n    'The Realtime service is unavailable: {$originalErrorMessage}',\n  [ErrorCode.CONFIG_UPDATE_MESSAGE_INVALID]:\n    'The stream invalidation message was unparsable: {$originalErrorMessage}',\n  [ErrorCode.CONFIG_UPDATE_NOT_FETCHED]:\n    'Unable to fetch the latest config: {$originalErrorMessage}'\n};\n\n// Note this is effectively a type system binding a code to params. This approach overlaps with the\n// role of TS interfaces, but works well for a few reasons:\n// 1) JS is unaware of TS interfaces, eg we can't test for interface implementation in JS\n// 2) callers should have access to a human-readable summary of the error and this interpolates\n//    params into an error message;\n// 3) callers should be able to programmatically access data associated with an error, which\n//    ErrorData provides.\ninterface ErrorParams {\n  [ErrorCode.STORAGE_OPEN]: { originalErrorMessage: string | undefined };\n  [ErrorCode.STORAGE_GET]: { originalErrorMessage: string | undefined };\n  [ErrorCode.STORAGE_SET]: { originalErrorMessage: string | undefined };\n  [ErrorCode.STORAGE_DELETE]: { originalErrorMessage: string | undefined };\n  [ErrorCode.FETCH_NETWORK]: { originalErrorMessage: string };\n  [ErrorCode.FETCH_THROTTLE]: { throttleEndTimeMillis: number };\n  [ErrorCode.FETCH_PARSE]: { originalErrorMessage: string };\n  [ErrorCode.FETCH_STATUS]: { httpStatus: number };\n  [ErrorCode.CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS]: { maxSignals: number };\n  [ErrorCode.CONFIG_UPDATE_STREAM_ERROR]: { originalErrorMessage: string };\n  [ErrorCode.CONFIG_UPDATE_UNAVAILABLE]: { originalErrorMessage: string };\n  [ErrorCode.CONFIG_UPDATE_MESSAGE_INVALID]: { originalErrorMessage: string };\n  [ErrorCode.CONFIG_UPDATE_NOT_FETCHED]: { originalErrorMessage: string };\n}\n\nexport const ERROR_FACTORY = new ErrorFactory<ErrorCode, ErrorParams>(\n  'remoteconfig' /* service */,\n  'Remote Config' /* service name */,\n  ERROR_DESCRIPTION_MAP\n);\n\n// Note how this is like typeof/instanceof, but for ErrorCode.\nexport function hasErrorCode(e: Error, errorCode: ErrorCode): boolean {\n  return e instanceof FirebaseError && e.code.indexOf(errorCode) !== -1;\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { Value as ValueType, ValueSource } from '@firebase/remote-config-types';\n\nconst DEFAULT_VALUE_FOR_BOOLEAN = false;\nconst DEFAULT_VALUE_FOR_STRING = '';\nconst DEFAULT_VALUE_FOR_NUMBER = 0;\n\nconst BOOLEAN_TRUTHY_VALUES = ['1', 'true', 't', 'yes', 'y', 'on'];\n\nexport class Value implements ValueType {\n  constructor(\n    private readonly _source: ValueSource,\n    private readonly _value: string = DEFAULT_VALUE_FOR_STRING\n  ) {}\n\n  asString(): string {\n    return this._value;\n  }\n\n  asBoolean(): boolean {\n    if (this._source === 'static') {\n      return DEFAULT_VALUE_FOR_BOOLEAN;\n    }\n    return BOOLEAN_TRUTHY_VALUES.indexOf(this._value.toLowerCase()) >= 0;\n  }\n\n  asNumber(): number {\n    if (this._source === 'static') {\n      return DEFAULT_VALUE_FOR_NUMBER;\n    }\n    let num = Number(this._value);\n    if (isNaN(num)) {\n      num = DEFAULT_VALUE_FOR_NUMBER;\n    }\n    return num;\n  }\n\n  getSource(): ValueSource {\n    return this._source;\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { _getProvider, FirebaseApp, getApp } from '@firebase/app';\nimport { deepEqual, getModularInstance } from '@firebase/util';\nimport {\n  CustomSignals,\n  LogLevel as RemoteConfigLogLevel,\n  RemoteConfig,\n  Value,\n  RemoteConfigOptions,\n  ConfigUpdateObserver,\n  Unsubscribe\n} from './public_types';\nimport { RemoteConfigAbortSignal } from './client/remote_config_fetch_client';\nimport {\n  RC_COMPONENT_NAME,\n  RC_CUSTOM_SIGNAL_KEY_MAX_LENGTH,\n  RC_CUSTOM_SIGNAL_VALUE_MAX_LENGTH\n} from './constants';\nimport { ERROR_FACTORY, ErrorCode, hasErrorCode } from './errors';\nimport { RemoteConfig as RemoteConfigImpl } from './remote_config';\nimport { Value as ValueImpl } from './value';\nimport { LogLevel as FirebaseLogLevel } from '@firebase/logger';\n\n/**\n *\n * @param app - The {@link @firebase/app#FirebaseApp} instance.\n * @param options - Optional. The {@link RemoteConfigOptions} with which to instantiate the\n *     Remote Config instance.\n * @returns A {@link RemoteConfig} instance.\n *\n * @public\n */\nexport function getRemoteConfig(\n  app: FirebaseApp = getApp(),\n  options: RemoteConfigOptions = {}\n): RemoteConfig {\n  app = getModularInstance(app);\n  const rcProvider = _getProvider(app, RC_COMPONENT_NAME);\n  if (rcProvider.isInitialized()) {\n    const initialOptions = rcProvider.getOptions() as RemoteConfigOptions;\n    if (deepEqual(initialOptions, options)) {\n      return rcProvider.getImmediate();\n    }\n    throw ERROR_FACTORY.create(ErrorCode.ALREADY_INITIALIZED);\n  }\n  rcProvider.initialize({ options });\n  const rc = rcProvider.getImmediate() as RemoteConfigImpl;\n\n  if (options.initialFetchResponse) {\n    // We use these initial writes as the initialization promise since they will hydrate the same\n    // fields that `storageCache.loadFromStorage` would set.\n    rc._initializePromise = Promise.all([\n      rc._storage.setLastSuccessfulFetchResponse(options.initialFetchResponse),\n      rc._storage.setActiveConfigEtag(options.initialFetchResponse?.eTag || ''),\n      rc._storage.setActiveConfigTemplateVersion(\n        options.initialFetchResponse.templateVersion || 0\n      ),\n      rc._storageCache.setLastSuccessfulFetchTimestampMillis(Date.now()),\n      rc._storageCache.setLastFetchStatus('success'),\n      rc._storageCache.setActiveConfig(\n        options.initialFetchResponse?.config || {}\n      )\n    ]).then();\n    // The `storageCache` methods above set their in-memory fields synchronously, so it's\n    // safe to declare our initialization complete at this point.\n    rc._isInitializationComplete = true;\n  }\n\n  return rc;\n}\n\n/**\n * Makes the last fetched config available to the getters.\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @returns A `Promise` which resolves to true if the current call activated the fetched configs.\n * If the fetched configs were already activated, the `Promise` will resolve to false.\n *\n * @public\n */\nexport async function activate(remoteConfig: RemoteConfig): Promise<boolean> {\n  const rc = getModularInstance(remoteConfig) as RemoteConfigImpl;\n  const [lastSuccessfulFetchResponse, activeConfigEtag] = await Promise.all([\n    rc._storage.getLastSuccessfulFetchResponse(),\n    rc._storage.getActiveConfigEtag()\n  ]);\n  if (\n    !lastSuccessfulFetchResponse ||\n    !lastSuccessfulFetchResponse.config ||\n    !lastSuccessfulFetchResponse.eTag ||\n    !lastSuccessfulFetchResponse.templateVersion ||\n    lastSuccessfulFetchResponse.eTag === activeConfigEtag\n  ) {\n    // Either there is no successful fetched config, or is the same as current active\n    // config.\n    return false;\n  }\n  await Promise.all([\n    rc._storageCache.setActiveConfig(lastSuccessfulFetchResponse.config),\n    rc._storage.setActiveConfigEtag(lastSuccessfulFetchResponse.eTag),\n    rc._storage.setActiveConfigTemplateVersion(\n      lastSuccessfulFetchResponse.templateVersion\n    )\n  ]);\n  return true;\n}\n\n/**\n * Ensures the last activated config are available to the getters.\n * @param remoteConfig - The {@link RemoteConfig} instance.\n *\n * @returns A `Promise` that resolves when the last activated config is available to the getters.\n * @public\n */\nexport function ensureInitialized(remoteConfig: RemoteConfig): Promise<void> {\n  const rc = getModularInstance(remoteConfig) as RemoteConfigImpl;\n  if (!rc._initializePromise) {\n    rc._initializePromise = rc._storageCache.loadFromStorage().then(() => {\n      rc._isInitializationComplete = true;\n    });\n  }\n  return rc._initializePromise;\n}\n\n/**\n * Fetches and caches configuration from the Remote Config service.\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @public\n */\nexport async function fetchConfig(remoteConfig: RemoteConfig): Promise<void> {\n  const rc = getModularInstance(remoteConfig) as RemoteConfigImpl;\n  // Aborts the request after the given timeout, causing the fetch call to\n  // reject with an `AbortError`.\n  //\n  // <p>Aborting after the request completes is a no-op, so we don't need a\n  // corresponding `clearTimeout`.\n  //\n  // Locating abort logic here because:\n  // * it uses a developer setting (timeout)\n  // * it applies to all retries (like curl's max-time arg)\n  // * it is consistent with the Fetch API's signal input\n  const abortSignal = new RemoteConfigAbortSignal();\n\n  setTimeout(async () => {\n    // Note a very low delay, eg < 10ms, can elapse before listeners are initialized.\n    abortSignal.abort();\n  }, rc.settings.fetchTimeoutMillis);\n\n  const customSignals = rc._storageCache.getCustomSignals();\n  if (customSignals) {\n    rc._logger.debug(\n      `Fetching config with custom signals: ${JSON.stringify(customSignals)}`\n    );\n  }\n  // Catches *all* errors thrown by client so status can be set consistently.\n  try {\n    await rc._client.fetch({\n      cacheMaxAgeMillis: rc.settings.minimumFetchIntervalMillis,\n      signal: abortSignal,\n      customSignals\n    });\n\n    await rc._storageCache.setLastFetchStatus('success');\n  } catch (e) {\n    const lastFetchStatus = hasErrorCode(e as Error, ErrorCode.FETCH_THROTTLE)\n      ? 'throttle'\n      : 'failure';\n    await rc._storageCache.setLastFetchStatus(lastFetchStatus);\n    throw e;\n  }\n}\n\n/**\n * Gets all config.\n *\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @returns All config.\n *\n * @public\n */\nexport function getAll(remoteConfig: RemoteConfig): Record<string, Value> {\n  const rc = getModularInstance(remoteConfig) as RemoteConfigImpl;\n  return getAllKeys(\n    rc._storageCache.getActiveConfig(),\n    rc.defaultConfig\n  ).reduce((allConfigs, key) => {\n    allConfigs[key] = getValue(remoteConfig, key);\n    return allConfigs;\n  }, {} as Record<string, Value>);\n}\n\n/**\n * Gets the value for the given key as a boolean.\n *\n * Convenience method for calling <code>remoteConfig.getValue(key).asBoolean()</code>.\n *\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @param key - The name of the parameter.\n *\n * @returns The value for the given key as a boolean.\n * @public\n */\nexport function getBoolean(remoteConfig: RemoteConfig, key: string): boolean {\n  return getValue(getModularInstance(remoteConfig), key).asBoolean();\n}\n\n/**\n * Gets the value for the given key as a number.\n *\n * Convenience method for calling <code>remoteConfig.getValue(key).asNumber()</code>.\n *\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @param key - The name of the parameter.\n *\n * @returns The value for the given key as a number.\n *\n * @public\n */\nexport function getNumber(remoteConfig: RemoteConfig, key: string): number {\n  return getValue(getModularInstance(remoteConfig), key).asNumber();\n}\n\n/**\n * Gets the value for the given key as a string.\n * Convenience method for calling <code>remoteConfig.getValue(key).asString()</code>.\n *\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @param key - The name of the parameter.\n *\n * @returns The value for the given key as a string.\n *\n * @public\n */\nexport function getString(remoteConfig: RemoteConfig, key: string): string {\n  return getValue(getModularInstance(remoteConfig), key).asString();\n}\n\n/**\n * Gets the {@link Value} for the given key.\n *\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @param key - The name of the parameter.\n *\n * @returns The value for the given key.\n *\n * @public\n */\nexport function getValue(remoteConfig: RemoteConfig, key: string): Value {\n  const rc = getModularInstance(remoteConfig) as RemoteConfigImpl;\n  if (!rc._isInitializationComplete) {\n    rc._logger.debug(\n      `A value was requested for key \"${key}\" before SDK initialization completed.` +\n        ' Await on ensureInitialized if the intent was to get a previously activated value.'\n    );\n  }\n  const activeConfig = rc._storageCache.getActiveConfig();\n  if (activeConfig && activeConfig[key] !== undefined) {\n    return new ValueImpl('remote', activeConfig[key]);\n  } else if (rc.defaultConfig && rc.defaultConfig[key] !== undefined) {\n    return new ValueImpl('default', String(rc.defaultConfig[key]));\n  }\n  rc._logger.debug(\n    `Returning static value for key \"${key}\".` +\n      ' Define a default or remote value if this is unintentional.'\n  );\n  return new ValueImpl('static');\n}\n\n/**\n * Defines the log level to use.\n *\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @param logLevel - The log level to set.\n *\n * @public\n */\nexport function setLogLevel(\n  remoteConfig: RemoteConfig,\n  logLevel: RemoteConfigLogLevel\n): void {\n  const rc = getModularInstance(remoteConfig) as RemoteConfigImpl;\n  switch (logLevel) {\n    case 'debug':\n      rc._logger.logLevel = FirebaseLogLevel.DEBUG;\n      break;\n    case 'silent':\n      rc._logger.logLevel = FirebaseLogLevel.SILENT;\n      break;\n    default:\n      rc._logger.logLevel = FirebaseLogLevel.ERROR;\n  }\n}\n\n/**\n * Dedupes and returns an array of all the keys of the received objects.\n */\nfunction getAllKeys(obj1: {} = {}, obj2: {} = {}): string[] {\n  return Object.keys({ ...obj1, ...obj2 });\n}\n\n/**\n * Sets the custom signals for the app instance.\n *\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @param customSignals - Map (key, value) of the custom signals to be set for the app instance. If\n * a key already exists, the value is overwritten. Setting the value of a custom signal to null\n * unsets the signal. The signals will be persisted locally on the client.\n *\n * @public\n */\nexport async function setCustomSignals(\n  remoteConfig: RemoteConfig,\n  customSignals: CustomSignals\n): Promise<void> {\n  const rc = getModularInstance(remoteConfig) as RemoteConfigImpl;\n  if (Object.keys(customSignals).length === 0) {\n    return;\n  }\n\n  // eslint-disable-next-line guard-for-in\n  for (const key in customSignals) {\n    if (key.length > RC_CUSTOM_SIGNAL_KEY_MAX_LENGTH) {\n      rc._logger.error(\n        `Custom signal key ${key} is too long, max allowed length is ${RC_CUSTOM_SIGNAL_KEY_MAX_LENGTH}.`\n      );\n      return;\n    }\n    const value = customSignals[key];\n    if (\n      typeof value === 'string' &&\n      value.length > RC_CUSTOM_SIGNAL_VALUE_MAX_LENGTH\n    ) {\n      rc._logger.error(\n        `Value supplied for custom signal ${key} is too long, max allowed length is ${RC_CUSTOM_SIGNAL_VALUE_MAX_LENGTH}.`\n      );\n      return;\n    }\n  }\n\n  try {\n    await rc._storageCache.setCustomSignals(customSignals);\n  } catch (error) {\n    rc._logger.error(\n      `Error encountered while setting custom signals: ${error}`\n    );\n  }\n}\n\n// TODO: Add public document for the Remote Config Realtime API guide on the Web Platform.\n/**\n * Starts listening for real-time config updates from the Remote Config backend and automatically\n * fetches updates from the Remote Config backend when they are available.\n *\n * @remarks\n * If a connection to the Remote Config backend is not already open, calling this method will\n * open it. Multiple listeners can be added by calling this method again, but subsequent calls\n * re-use the same connection to the backend.\n *\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @param observer - The {@link ConfigUpdateObserver} to be notified of config updates.\n * @returns An {@link Unsubscribe} function to remove the listener.\n *\n * @public\n */\nexport function onConfigUpdate(\n  remoteConfig: RemoteConfig,\n  observer: ConfigUpdateObserver\n): Unsubscribe {\n  const rc = getModularInstance(remoteConfig) as RemoteConfigImpl;\n  rc._realtimeHandler.addObserver(observer);\n  return () => {\n    rc._realtimeHandler.removeObserver(observer);\n  };\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { StorageCache } from '../storage/storage_cache';\nimport { FetchResponse } from '../public_types';\nimport {\n  RemoteConfigFetchClient,\n  FetchRequest\n} from './remote_config_fetch_client';\nimport { Storage } from '../storage/storage';\nimport { Logger } from '@firebase/logger';\n\n/**\n * Implements the {@link RemoteConfigClient} abstraction with success response caching.\n *\n * <p>Comparable to the browser's Cache API for responses, but the Cache API requires a Service\n * Worker, which requires HTTPS, which would significantly complicate SDK installation. Also, the\n * Cache API doesn't support matching entries by time.\n */\nexport class CachingClient implements RemoteConfigFetchClient {\n  constructor(\n    private readonly client: RemoteConfigFetchClient,\n    private readonly storage: Storage,\n    private readonly storageCache: StorageCache,\n    private readonly logger: Logger\n  ) {}\n\n  /**\n   * Returns true if the age of the cached fetched configs is less than or equal to\n   * {@link Settings#minimumFetchIntervalInSeconds}.\n   *\n   * <p>This is comparable to passing `headers = { 'Cache-Control': max-age <maxAge> }` to the\n   * native Fetch API.\n   *\n   * <p>Visible for testing.\n   */\n  isCachedDataFresh(\n    cacheMaxAgeMillis: number,\n    lastSuccessfulFetchTimestampMillis: number | undefined\n  ): boolean {\n    // Cache can only be fresh if it's populated.\n    if (!lastSuccessfulFetchTimestampMillis) {\n      this.logger.debug('Config fetch cache check. Cache unpopulated.');\n      return false;\n    }\n\n    // Calculates age of cache entry.\n    const cacheAgeMillis = Date.now() - lastSuccessfulFetchTimestampMillis;\n\n    const isCachedDataFresh = cacheAgeMillis <= cacheMaxAgeMillis;\n\n    this.logger.debug(\n      'Config fetch cache check.' +\n        ` Cache age millis: ${cacheAgeMillis}.` +\n        ` Cache max age millis (minimumFetchIntervalMillis setting): ${cacheMaxAgeMillis}.` +\n        ` Is cache hit: ${isCachedDataFresh}.`\n    );\n\n    return isCachedDataFresh;\n  }\n\n  async fetch(request: FetchRequest): Promise<FetchResponse> {\n    // Reads from persisted storage to avoid cache miss if callers don't wait on initialization.\n    const [lastSuccessfulFetchTimestampMillis, lastSuccessfulFetchResponse] =\n      await Promise.all([\n        this.storage.getLastSuccessfulFetchTimestampMillis(),\n        this.storage.getLastSuccessfulFetchResponse()\n      ]);\n\n    // Exits early on cache hit.\n    if (\n      lastSuccessfulFetchResponse &&\n      this.isCachedDataFresh(\n        request.cacheMaxAgeMillis,\n        lastSuccessfulFetchTimestampMillis\n      )\n    ) {\n      return lastSuccessfulFetchResponse;\n    }\n\n    // Deviates from pure decorator by not honoring a passed ETag since we don't have a public API\n    // that allows the caller to pass an ETag.\n    request.eTag =\n      lastSuccessfulFetchResponse && lastSuccessfulFetchResponse.eTag;\n\n    // Falls back to service on cache miss.\n    const response = await this.client.fetch(request);\n\n    // Fetch throws for non-success responses, so success is guaranteed here.\n\n    const storageOperations = [\n      // Uses write-through cache for consistency with synchronous public API.\n      this.storageCache.setLastSuccessfulFetchTimestampMillis(Date.now())\n    ];\n\n    if (response.status === 200) {\n      // Caches response only if it has changed, ie non-304 responses.\n      storageOperations.push(\n        this.storage.setLastSuccessfulFetchResponse(response)\n      );\n    }\n\n    await Promise.all(storageOperations);\n\n    return response;\n  }\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * Attempts to get the most accurate browser language setting.\n *\n * <p>Adapted from getUserLanguage in packages/auth/src/utils.js for TypeScript.\n *\n * <p>Defers default language specification to server logic for consistency.\n *\n * @param navigatorLanguage Enables tests to override read-only {@link NavigatorLanguage}.\n */\nexport function getUserLanguage(\n  navigatorLanguage: NavigatorLanguage = navigator\n): string {\n  return (\n    // Most reliable, but only supported in Chrome/Firefox.\n    (navigatorLanguage.languages && navigatorLanguage.languages[0]) ||\n    // Supported in most browsers, but returns the language of the browser\n    // UI, not the language set in browser settings.\n    navigatorLanguage.language\n    // Polyfill otherwise.\n  );\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n  CustomSignals,\n  FetchResponse,\n  FirebaseRemoteConfigObject\n} from '../public_types';\nimport {\n  RemoteConfigFetchClient,\n  FetchRequest\n} from './remote_config_fetch_client';\nimport { ERROR_FACTORY, ErrorCode } from '../errors';\nimport { getUserLanguage } from '../language';\nimport { _FirebaseInstallationsInternal } from '@firebase/installations';\n\n/**\n * Defines request body parameters required to call the fetch API:\n * https://firebase.google.com/docs/reference/remote-config/rest\n *\n * <p>Not exported because this file encapsulates REST API specifics.\n *\n * <p>Not passing User Properties because Analytics' source of truth on Web is server-side.\n */\ninterface FetchRequestBody {\n  // Disables camelcase linting for request body params.\n  /* eslint-disable camelcase*/\n  sdk_version: string;\n  app_instance_id: string;\n  app_instance_id_token: string;\n  app_id: string;\n  language_code: string;\n  custom_signals?: CustomSignals;\n  /* eslint-enable camelcase */\n}\n\n/**\n * Implements the Client abstraction for the Remote Config REST API.\n */\nexport class RestClient implements RemoteConfigFetchClient {\n  constructor(\n    private readonly firebaseInstallations: _FirebaseInstallationsInternal,\n    private readonly sdkVersion: string,\n    private readonly namespace: string,\n    private readonly projectId: string,\n    private readonly apiKey: string,\n    private readonly appId: string\n  ) {}\n\n  /**\n   * Fetches from the Remote Config REST API.\n   *\n   * @throws a {@link ErrorCode.FETCH_NETWORK} error if {@link GlobalFetch#fetch} can't\n   * connect to the network.\n   * @throws a {@link ErrorCode.FETCH_PARSE} error if {@link Response#json} can't parse the\n   * fetch response.\n   * @throws a {@link ErrorCode.FETCH_STATUS} error if the service returns an HTTP error status.\n   */\n  async fetch(request: FetchRequest): Promise<FetchResponse> {\n    const [installationId, installationToken] = await Promise.all([\n      this.firebaseInstallations.getId(),\n      this.firebaseInstallations.getToken()\n    ]);\n\n    const urlBase =\n      window.FIREBASE_REMOTE_CONFIG_URL_BASE ||\n      'https://firebaseremoteconfig.googleapis.com';\n\n    const url = `${urlBase}/v1/projects/${this.projectId}/namespaces/${this.namespace}:fetch?key=${this.apiKey}`;\n\n    const headers = {\n      'Content-Type': 'application/json',\n      'Content-Encoding': 'gzip',\n      // Deviates from pure decorator by not passing max-age header since we don't currently have\n      // service behavior using that header.\n      'If-None-Match': request.eTag || '*'\n      // TODO: Add this header once CORS error is fixed internally.\n      //'X-Firebase-RC-Fetch-Type': `${fetchType}/${fetchAttempt}`\n    };\n\n    const requestBody: FetchRequestBody = {\n      /* eslint-disable camelcase */\n      sdk_version: this.sdkVersion,\n      app_instance_id: installationId,\n      app_instance_id_token: installationToken,\n      app_id: this.appId,\n      language_code: getUserLanguage(),\n      custom_signals: request.customSignals\n      /* eslint-enable camelcase */\n    };\n\n    const options = {\n      method: 'POST',\n      headers,\n      body: JSON.stringify(requestBody)\n    };\n\n    // This logic isn't REST-specific, but shimming abort logic isn't worth another decorator.\n    const fetchPromise = fetch(url, options);\n    const timeoutPromise = new Promise((_resolve, reject) => {\n      // Maps async event listener to Promise API.\n      request.signal.addEventListener(() => {\n        // Emulates https://heycam.github.io/webidl/#aborterror\n        const error = new Error('The operation was aborted.');\n        error.name = 'AbortError';\n        reject(error);\n      });\n    });\n\n    let response;\n    try {\n      await Promise.race([fetchPromise, timeoutPromise]);\n      response = await fetchPromise;\n    } catch (originalError) {\n      let errorCode = ErrorCode.FETCH_NETWORK;\n      if ((originalError as Error)?.name === 'AbortError') {\n        errorCode = ErrorCode.FETCH_TIMEOUT;\n      }\n      throw ERROR_FACTORY.create(errorCode, {\n        originalErrorMessage: (originalError as Error)?.message\n      });\n    }\n\n    let status = response.status;\n\n    // Normalizes nullable header to optional.\n    const responseEtag = response.headers.get('ETag') || undefined;\n\n    let config: FirebaseRemoteConfigObject | undefined;\n    let state: string | undefined;\n    let templateVersion: number | undefined;\n\n    // JSON parsing throws SyntaxError if the response body isn't a JSON string.\n    // Requesting application/json and checking for a 200 ensures there's JSON data.\n    if (response.status === 200) {\n      let responseBody;\n      try {\n        responseBody = await response.json();\n      } catch (originalError) {\n        throw ERROR_FACTORY.create(ErrorCode.FETCH_PARSE, {\n          originalErrorMessage: (originalError as Error)?.message\n        });\n      }\n      config = responseBody['entries'];\n      state = responseBody['state'];\n      templateVersion = responseBody['templateVersion'];\n    }\n\n    // Normalizes based on legacy state.\n    if (state === 'INSTANCE_STATE_UNSPECIFIED') {\n      status = 500;\n    } else if (state === 'NO_CHANGE') {\n      status = 304;\n    } else if (state === 'NO_TEMPLATE' || state === 'EMPTY_CONFIG') {\n      // These cases can be fixed remotely, so normalize to safe value.\n      config = {};\n    }\n\n    // Normalize to exception-based control flow for non-success cases.\n    // Encapsulates HTTP specifics in this class as much as possible. Status is still the best for\n    // differentiating success states (200 from 304; the state body param is undefined in a\n    // standard 304).\n    if (status !== 304 && status !== 200) {\n      throw ERROR_FACTORY.create(ErrorCode.FETCH_STATUS, {\n        httpStatus: status\n      });\n    }\n\n    return { status, eTag: responseEtag, config, templateVersion };\n  }\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FetchResponse } from '../public_types';\nimport {\n  RemoteConfigAbortSignal,\n  RemoteConfigFetchClient,\n  FetchRequest\n} from './remote_config_fetch_client';\nimport { ThrottleMetadata, Storage } from '../storage/storage';\nimport { ErrorCode, ERROR_FACTORY } from '../errors';\nimport { FirebaseError, calculateBackoffMillis } from '@firebase/util';\n\n/**\n * Supports waiting on a backoff by:\n *\n * <ul>\n *   <li>Promisifying setTimeout, so we can set a timeout in our Promise chain</li>\n *   <li>Listening on a signal bus for abort events, just like the Fetch API</li>\n *   <li>Failing in the same way the Fetch API fails, so timing out a live request and a throttled\n *       request appear the same.</li>\n * </ul>\n *\n * <p>Visible for testing.\n */\nexport function setAbortableTimeout(\n  signal: RemoteConfigAbortSignal,\n  throttleEndTimeMillis: number\n): Promise<void> {\n  return new Promise((resolve, reject) => {\n    // Derives backoff from given end time, normalizing negative numbers to zero.\n    const backoffMillis = Math.max(throttleEndTimeMillis - Date.now(), 0);\n\n    const timeout = setTimeout(resolve, backoffMillis);\n\n    // Adds listener, rather than sets onabort, because signal is a shared object.\n    signal.addEventListener(() => {\n      clearTimeout(timeout);\n\n      // If the request completes before this timeout, the rejection has no effect.\n      reject(\n        ERROR_FACTORY.create(ErrorCode.FETCH_THROTTLE, {\n          throttleEndTimeMillis\n        })\n      );\n    });\n  });\n}\n\ntype RetriableError = FirebaseError & { customData: { httpStatus: string } };\n/**\n * Returns true if the {@link Error} indicates a fetch request may succeed later.\n */\nfunction isRetriableError(e: Error): e is RetriableError {\n  if (!(e instanceof FirebaseError) || !e.customData) {\n    return false;\n  }\n\n  // Uses string index defined by ErrorData, which FirebaseError implements.\n  const httpStatus = Number(e.customData['httpStatus']);\n\n  return (\n    httpStatus === 429 ||\n    httpStatus === 500 ||\n    httpStatus === 503 ||\n    httpStatus === 504\n  );\n}\n\n/**\n * Decorates a Client with retry logic.\n *\n * <p>Comparable to CachingClient, but uses backoff logic instead of cache max age and doesn't cache\n * responses (because the SDK has no use for error responses).\n */\nexport class RetryingClient implements RemoteConfigFetchClient {\n  constructor(\n    private readonly client: RemoteConfigFetchClient,\n    private readonly storage: Storage\n  ) {}\n\n  async fetch(request: FetchRequest): Promise<FetchResponse> {\n    const throttleMetadata = (await this.storage.getThrottleMetadata()) || {\n      backoffCount: 0,\n      throttleEndTimeMillis: Date.now()\n    };\n\n    return this.attemptFetch(request, throttleMetadata);\n  }\n\n  /**\n   * A recursive helper for attempting a fetch request repeatedly.\n   *\n   * @throws any non-retriable errors.\n   */\n  async attemptFetch(\n    request: FetchRequest,\n    { throttleEndTimeMillis, backoffCount }: ThrottleMetadata\n  ): Promise<FetchResponse> {\n    // Starts with a (potentially zero) timeout to support resumption from stored state.\n    // Ensures the throttle end time is honored if the last attempt timed out.\n    // Note the SDK will never make a request if the fetch timeout expires at this point.\n    await setAbortableTimeout(request.signal, throttleEndTimeMillis);\n\n    try {\n      const response = await this.client.fetch(request);\n\n      // Note the SDK only clears throttle state if response is success or non-retriable.\n      await this.storage.deleteThrottleMetadata();\n\n      return response;\n    } catch (e) {\n      if (!isRetriableError(e as Error)) {\n        throw e;\n      }\n\n      // Increments backoff state.\n      const throttleMetadata = {\n        throttleEndTimeMillis:\n          Date.now() + calculateBackoffMillis(backoffCount),\n        backoffCount: backoffCount + 1\n      };\n\n      // Persists state.\n      await this.storage.setThrottleMetadata(throttleMetadata);\n\n      return this.attemptFetch(request, throttleMetadata);\n    }\n  }\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseApp } from '@firebase/app';\nimport {\n  RemoteConfig as RemoteConfigType,\n  FetchStatus,\n  RemoteConfigSettings\n} from './public_types';\nimport { StorageCache } from './storage/storage_cache';\nimport { RemoteConfigFetchClient } from './client/remote_config_fetch_client';\nimport { Storage } from './storage/storage';\nimport { Logger } from '@firebase/logger';\nimport { RealtimeHandler } from './client/realtime_handler';\n\nconst DEFAULT_FETCH_TIMEOUT_MILLIS = 60 * 1000; // One minute\nconst DEFAULT_CACHE_MAX_AGE_MILLIS = 12 * 60 * 60 * 1000; // Twelve hours.\n\n/**\n * Encapsulates business logic mapping network and storage dependencies to the public SDK API.\n *\n * See {@link https://github.com/firebase/firebase-js-sdk/blob/main/packages/firebase/compat/index.d.ts|interface documentation} for method descriptions.\n */\nexport class RemoteConfig implements RemoteConfigType {\n  /**\n   * Tracks completion of initialization promise.\n   * @internal\n   */\n  _isInitializationComplete = false;\n\n  /**\n   * De-duplicates initialization calls.\n   * @internal\n   */\n  _initializePromise?: Promise<void>;\n\n  settings: RemoteConfigSettings = {\n    fetchTimeoutMillis: DEFAULT_FETCH_TIMEOUT_MILLIS,\n    minimumFetchIntervalMillis: DEFAULT_CACHE_MAX_AGE_MILLIS\n  };\n\n  defaultConfig: { [key: string]: string | number | boolean } = {};\n\n  get fetchTimeMillis(): number {\n    return this._storageCache.getLastSuccessfulFetchTimestampMillis() || -1;\n  }\n\n  get lastFetchStatus(): FetchStatus {\n    return this._storageCache.getLastFetchStatus() || 'no-fetch-yet';\n  }\n\n  constructor(\n    // Required by FirebaseServiceFactory interface.\n    readonly app: FirebaseApp,\n    // JS doesn't support private yet\n    // (https://github.com/tc39/proposal-class-fields#private-fields), so we hint using an\n    // underscore prefix.\n    /**\n     * @internal\n     */\n    readonly _client: RemoteConfigFetchClient,\n    /**\n     * @internal\n     */\n    readonly _storageCache: StorageCache,\n    /**\n     * @internal\n     */\n    readonly _storage: Storage,\n    /**\n     * @internal\n     */\n    readonly _logger: Logger,\n    /**\n     * @internal\n     */\n    readonly _realtimeHandler: RealtimeHandler\n  ) {}\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FetchStatus, CustomSignals } from '@firebase/remote-config-types';\nimport { FetchResponse, FirebaseRemoteConfigObject } from '../public_types';\nimport { ERROR_FACTORY, ErrorCode } from '../errors';\nimport { RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS } from '../constants';\nimport { FirebaseError } from '@firebase/util';\n\n/**\n * Converts an error event associated with a {@link IDBRequest} to a {@link FirebaseError}.\n */\nfunction toFirebaseError(event: Event, errorCode: ErrorCode): FirebaseError {\n  const originalError = (event.target as IDBRequest).error || undefined;\n  return ERROR_FACTORY.create(errorCode, {\n    originalErrorMessage: originalError && (originalError as Error)?.message\n  });\n}\n\n/**\n * A general-purpose store keyed by app + namespace + {@link\n * ProjectNamespaceKeyFieldValue}.\n *\n * <p>The Remote Config SDK can be used with multiple app installations, and each app can interact\n * with multiple namespaces, so this store uses app (ID + name) and namespace as common parent keys\n * for a set of key-value pairs. See {@link Storage#createCompositeKey}.\n *\n * <p>Visible for testing.\n */\nexport const APP_NAMESPACE_STORE = 'app_namespace_store';\n\nconst DB_NAME = 'firebase_remote_config';\nconst DB_VERSION = 1;\n\n/**\n * Encapsulates metadata concerning throttled fetch requests.\n */\nexport interface ThrottleMetadata {\n  // The number of times fetch has backed off. Used for resuming backoff after a timeout.\n  backoffCount: number;\n  // The Unix timestamp in milliseconds when callers can retry a request.\n  throttleEndTimeMillis: number;\n}\n\nexport interface RealtimeBackoffMetadata {\n  // The number of consecutive connection streams that have failed.\n  numFailedStreams: number;\n  // The Date until which the client should wait before attempting any new real-time connections.\n  backoffEndTimeMillis: Date;\n}\n\n/**\n * Provides type-safety for the \"key\" field used by {@link APP_NAMESPACE_STORE}.\n *\n * <p>This seems like a small price to avoid potentially subtle bugs caused by a typo.\n */\ntype ProjectNamespaceKeyFieldValue =\n  | 'active_config'\n  | 'active_config_etag'\n  | 'last_fetch_status'\n  | 'last_successful_fetch_timestamp_millis'\n  | 'last_successful_fetch_response'\n  | 'settings'\n  | 'throttle_metadata'\n  | 'custom_signals'\n  | 'realtime_backoff_metadata'\n  | 'last_known_template_version';\n\n// Visible for testing.\nexport function openDatabase(): Promise<IDBDatabase> {\n  return new Promise((resolve, reject) => {\n    try {\n      const request = indexedDB.open(DB_NAME, DB_VERSION);\n      request.onerror = event => {\n        reject(toFirebaseError(event, ErrorCode.STORAGE_OPEN));\n      };\n      request.onsuccess = event => {\n        resolve((event.target as IDBOpenDBRequest).result);\n      };\n      request.onupgradeneeded = event => {\n        const db = (event.target as IDBOpenDBRequest).result;\n\n        // We don't use 'break' in this switch statement, the fall-through\n        // behavior is what we want, because if there are multiple versions between\n        // the old version and the current version, we want ALL the migrations\n        // that correspond to those versions to run, not only the last one.\n        // eslint-disable-next-line default-case\n        switch (event.oldVersion) {\n          case 0:\n            db.createObjectStore(APP_NAMESPACE_STORE, {\n              keyPath: 'compositeKey'\n            });\n        }\n      };\n    } catch (error) {\n      reject(\n        ERROR_FACTORY.create(ErrorCode.STORAGE_OPEN, {\n          originalErrorMessage: (error as Error)?.message\n        })\n      );\n    }\n  });\n}\n\n/**\n * Abstracts data persistence.\n */\nexport abstract class Storage {\n  getLastFetchStatus(): Promise<FetchStatus | undefined> {\n    return this.get<FetchStatus>('last_fetch_status');\n  }\n\n  setLastFetchStatus(status: FetchStatus): Promise<void> {\n    return this.set<FetchStatus>('last_fetch_status', status);\n  }\n\n  // This is comparable to a cache entry timestamp. If we need to expire other data, we could\n  // consider adding timestamp to all storage records and an optional max age arg to getters.\n  getLastSuccessfulFetchTimestampMillis(): Promise<number | undefined> {\n    return this.get<number>('last_successful_fetch_timestamp_millis');\n  }\n\n  setLastSuccessfulFetchTimestampMillis(timestamp: number): Promise<void> {\n    return this.set<number>(\n      'last_successful_fetch_timestamp_millis',\n      timestamp\n    );\n  }\n\n  getLastSuccessfulFetchResponse(): Promise<FetchResponse | undefined> {\n    return this.get<FetchResponse>('last_successful_fetch_response');\n  }\n\n  setLastSuccessfulFetchResponse(response: FetchResponse): Promise<void> {\n    return this.set<FetchResponse>('last_successful_fetch_response', response);\n  }\n\n  getActiveConfig(): Promise<FirebaseRemoteConfigObject | undefined> {\n    return this.get<FirebaseRemoteConfigObject>('active_config');\n  }\n\n  setActiveConfig(config: FirebaseRemoteConfigObject): Promise<void> {\n    return this.set<FirebaseRemoteConfigObject>('active_config', config);\n  }\n\n  getActiveConfigEtag(): Promise<string | undefined> {\n    return this.get<string>('active_config_etag');\n  }\n\n  setActiveConfigEtag(etag: string): Promise<void> {\n    return this.set<string>('active_config_etag', etag);\n  }\n\n  getThrottleMetadata(): Promise<ThrottleMetadata | undefined> {\n    return this.get<ThrottleMetadata>('throttle_metadata');\n  }\n\n  setThrottleMetadata(metadata: ThrottleMetadata): Promise<void> {\n    return this.set<ThrottleMetadata>('throttle_metadata', metadata);\n  }\n\n  deleteThrottleMetadata(): Promise<void> {\n    return this.delete('throttle_metadata');\n  }\n\n  getCustomSignals(): Promise<CustomSignals | undefined> {\n    return this.get<CustomSignals>('custom_signals');\n  }\n\n  abstract setCustomSignals(\n    customSignals: CustomSignals\n  ): Promise<CustomSignals>;\n  abstract get<T>(key: ProjectNamespaceKeyFieldValue): Promise<T | undefined>;\n  abstract set<T>(key: ProjectNamespaceKeyFieldValue, value: T): Promise<void>;\n  abstract delete(key: ProjectNamespaceKeyFieldValue): Promise<void>;\n\n  getRealtimeBackoffMetadata(): Promise<RealtimeBackoffMetadata | undefined> {\n    return this.get<RealtimeBackoffMetadata>('realtime_backoff_metadata');\n  }\n\n  setRealtimeBackoffMetadata(\n    realtimeMetadata: RealtimeBackoffMetadata\n  ): Promise<void> {\n    return this.set<RealtimeBackoffMetadata>(\n      'realtime_backoff_metadata',\n      realtimeMetadata\n    );\n  }\n\n  getActiveConfigTemplateVersion(): Promise<number | undefined> {\n    return this.get<number>('last_known_template_version');\n  }\n\n  setActiveConfigTemplateVersion(version: number): Promise<void> {\n    return this.set<number>('last_known_template_version', version);\n  }\n}\n\nexport class IndexedDbStorage extends Storage {\n  /**\n   * @param appId enables storage segmentation by app (ID + name).\n   * @param appName enables storage segmentation by app (ID + name).\n   * @param namespace enables storage segmentation by namespace.\n   */\n  constructor(\n    private readonly appId: string,\n    private readonly appName: string,\n    private readonly namespace: string,\n    private readonly openDbPromise = openDatabase()\n  ) {\n    super();\n  }\n\n  async setCustomSignals(customSignals: CustomSignals): Promise<CustomSignals> {\n    const db = await this.openDbPromise;\n    const transaction = db.transaction([APP_NAMESPACE_STORE], 'readwrite');\n    const storedSignals = await this.getWithTransaction<CustomSignals>(\n      'custom_signals',\n      transaction\n    );\n    const updatedSignals = mergeCustomSignals(\n      customSignals,\n      storedSignals || {}\n    );\n    await this.setWithTransaction<CustomSignals>(\n      'custom_signals',\n      updatedSignals,\n      transaction\n    );\n    return updatedSignals;\n  }\n\n  /**\n   * Gets a value from the database using the provided transaction.\n   *\n   * @param key The key of the value to get.\n   * @param transaction The transaction to use for the operation.\n   * @returns The value associated with the key, or undefined if no such value exists.\n   */\n  async getWithTransaction<T>(\n    key: ProjectNamespaceKeyFieldValue,\n    transaction: IDBTransaction\n  ): Promise<T | undefined> {\n    return new Promise((resolve, reject) => {\n      const objectStore = transaction.objectStore(APP_NAMESPACE_STORE);\n      const compositeKey = this.createCompositeKey(key);\n      try {\n        const request = objectStore.get(compositeKey);\n        request.onerror = event => {\n          reject(toFirebaseError(event, ErrorCode.STORAGE_GET));\n        };\n        request.onsuccess = event => {\n          const result = (event.target as IDBRequest).result;\n          if (result) {\n            resolve(result.value);\n          } else {\n            resolve(undefined);\n          }\n        };\n      } catch (e) {\n        reject(\n          ERROR_FACTORY.create(ErrorCode.STORAGE_GET, {\n            originalErrorMessage: (e as Error)?.message\n          })\n        );\n      }\n    });\n  }\n\n  /**\n   * Sets a value in the database using the provided transaction.\n   *\n   * @param key The key of the value to set.\n   * @param value The value to set.\n   * @param transaction The transaction to use for the operation.\n   * @returns A promise that resolves when the operation is complete.\n   */\n  async setWithTransaction<T>(\n    key: ProjectNamespaceKeyFieldValue,\n    value: T,\n    transaction: IDBTransaction\n  ): Promise<void> {\n    return new Promise((resolve, reject) => {\n      const objectStore = transaction.objectStore(APP_NAMESPACE_STORE);\n      const compositeKey = this.createCompositeKey(key);\n      try {\n        const request = objectStore.put({\n          compositeKey,\n          value\n        });\n        request.onerror = (event: Event) => {\n          reject(toFirebaseError(event, ErrorCode.STORAGE_SET));\n        };\n        request.onsuccess = () => {\n          resolve();\n        };\n      } catch (e) {\n        reject(\n          ERROR_FACTORY.create(ErrorCode.STORAGE_SET, {\n            originalErrorMessage: (e as Error)?.message\n          })\n        );\n      }\n    });\n  }\n\n  async get<T>(key: ProjectNamespaceKeyFieldValue): Promise<T | undefined> {\n    const db = await this.openDbPromise;\n    const transaction = db.transaction([APP_NAMESPACE_STORE], 'readonly');\n    return this.getWithTransaction<T>(key, transaction);\n  }\n\n  async set<T>(key: ProjectNamespaceKeyFieldValue, value: T): Promise<void> {\n    const db = await this.openDbPromise;\n    const transaction = db.transaction([APP_NAMESPACE_STORE], 'readwrite');\n    return this.setWithTransaction<T>(key, value, transaction);\n  }\n\n  async delete(key: ProjectNamespaceKeyFieldValue): Promise<void> {\n    const db = await this.openDbPromise;\n    return new Promise((resolve, reject) => {\n      const transaction = db.transaction([APP_NAMESPACE_STORE], 'readwrite');\n      const objectStore = transaction.objectStore(APP_NAMESPACE_STORE);\n      const compositeKey = this.createCompositeKey(key);\n      try {\n        const request = objectStore.delete(compositeKey);\n        request.onerror = (event: Event) => {\n          reject(toFirebaseError(event, ErrorCode.STORAGE_DELETE));\n        };\n        request.onsuccess = () => {\n          resolve();\n        };\n      } catch (e) {\n        reject(\n          ERROR_FACTORY.create(ErrorCode.STORAGE_DELETE, {\n            originalErrorMessage: (e as Error)?.message\n          })\n        );\n      }\n    });\n  }\n\n  // Facilitates composite key functionality (which is unsupported in IE).\n  createCompositeKey(key: ProjectNamespaceKeyFieldValue): string {\n    return [this.appId, this.appName, this.namespace, key].join();\n  }\n}\n\nexport class InMemoryStorage extends Storage {\n  private storage: { [key: string]: unknown } = {};\n\n  async get<T>(key: ProjectNamespaceKeyFieldValue): Promise<T> {\n    return Promise.resolve(this.storage[key] as T);\n  }\n\n  async set<T>(key: ProjectNamespaceKeyFieldValue, value: T): Promise<void> {\n    this.storage[key] = value;\n    return Promise.resolve(undefined);\n  }\n\n  async delete(key: ProjectNamespaceKeyFieldValue): Promise<void> {\n    this.storage[key] = undefined;\n    return Promise.resolve();\n  }\n\n  async setCustomSignals(customSignals: CustomSignals): Promise<CustomSignals> {\n    const storedSignals = (this.storage['custom_signals'] ||\n      {}) as CustomSignals;\n    this.storage['custom_signals'] = mergeCustomSignals(\n      customSignals,\n      storedSignals\n    );\n    return Promise.resolve(this.storage['custom_signals'] as CustomSignals);\n  }\n}\n\nfunction mergeCustomSignals(\n  customSignals: CustomSignals,\n  storedSignals: CustomSignals\n): CustomSignals {\n  const combinedSignals = {\n    ...storedSignals,\n    ...customSignals\n  };\n\n  // Filter out key-value assignments with null values since they are signals being unset\n  const updatedSignals = Object.fromEntries(\n    Object.entries(combinedSignals)\n      .filter(([_, v]) => v !== null)\n      .map(([k, v]) => {\n        // Stringify numbers to store a map of string keys and values which can be sent\n        // as-is in a fetch call.\n        if (typeof v === 'number') {\n          return [k, v.toString()];\n        }\n        return [k, v];\n      })\n  );\n\n  // Throw an error if the number of custom signals to be stored exceeds the limit\n  if (\n    Object.keys(updatedSignals).length > RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS\n  ) {\n    throw ERROR_FACTORY.create(ErrorCode.CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS, {\n      maxSignals: RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS\n    });\n  }\n  return updatedSignals;\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FetchStatus, CustomSignals } from '@firebase/remote-config-types';\nimport { FirebaseRemoteConfigObject } from '../public_types';\nimport { Storage } from './storage';\n\n/**\n * A memory cache layer over storage to support the SDK's synchronous read requirements.\n */\nexport class StorageCache {\n  constructor(private readonly storage: Storage) {}\n\n  /**\n   * Memory caches.\n   */\n  private lastFetchStatus?: FetchStatus;\n  private lastSuccessfulFetchTimestampMillis?: number;\n  private activeConfig?: FirebaseRemoteConfigObject;\n  private customSignals?: CustomSignals;\n\n  /**\n   * Memory-only getters\n   */\n  getLastFetchStatus(): FetchStatus | undefined {\n    return this.lastFetchStatus;\n  }\n\n  getLastSuccessfulFetchTimestampMillis(): number | undefined {\n    return this.lastSuccessfulFetchTimestampMillis;\n  }\n\n  getActiveConfig(): FirebaseRemoteConfigObject | undefined {\n    return this.activeConfig;\n  }\n\n  getCustomSignals(): CustomSignals | undefined {\n    return this.customSignals;\n  }\n\n  /**\n   * Read-ahead getter\n   */\n  async loadFromStorage(): Promise<void> {\n    const lastFetchStatusPromise = this.storage.getLastFetchStatus();\n    const lastSuccessfulFetchTimestampMillisPromise =\n      this.storage.getLastSuccessfulFetchTimestampMillis();\n    const activeConfigPromise = this.storage.getActiveConfig();\n    const customSignalsPromise = this.storage.getCustomSignals();\n\n    // Note:\n    // 1. we consistently check for undefined to avoid clobbering defined values\n    //   in memory\n    // 2. we defer awaiting to improve readability, as opposed to destructuring\n    //   a Promise.all result, for example\n\n    const lastFetchStatus = await lastFetchStatusPromise;\n    if (lastFetchStatus) {\n      this.lastFetchStatus = lastFetchStatus;\n    }\n\n    const lastSuccessfulFetchTimestampMillis =\n      await lastSuccessfulFetchTimestampMillisPromise;\n    if (lastSuccessfulFetchTimestampMillis) {\n      this.lastSuccessfulFetchTimestampMillis =\n        lastSuccessfulFetchTimestampMillis;\n    }\n\n    const activeConfig = await activeConfigPromise;\n    if (activeConfig) {\n      this.activeConfig = activeConfig;\n    }\n\n    const customSignals = await customSignalsPromise;\n    if (customSignals) {\n      this.customSignals = customSignals;\n    }\n  }\n\n  /**\n   * Write-through setters\n   */\n  setLastFetchStatus(status: FetchStatus): Promise<void> {\n    this.lastFetchStatus = status;\n    return this.storage.setLastFetchStatus(status);\n  }\n\n  setLastSuccessfulFetchTimestampMillis(\n    timestampMillis: number\n  ): Promise<void> {\n    this.lastSuccessfulFetchTimestampMillis = timestampMillis;\n    return this.storage.setLastSuccessfulFetchTimestampMillis(timestampMillis);\n  }\n\n  setActiveConfig(activeConfig: FirebaseRemoteConfigObject): Promise<void> {\n    this.activeConfig = activeConfig;\n    return this.storage.setActiveConfig(activeConfig);\n  }\n\n  async setCustomSignals(customSignals: CustomSignals): Promise<void> {\n    this.customSignals = await this.storage.setCustomSignals(customSignals);\n  }\n}\n","/**\n * @license\n * Copyright 2025 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { assert } from '@firebase/util';\n\n// 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.\n/**\n * Base class to be used if you want to emit events. Call the constructor with\n * the set of allowed event names.\n */\nexport abstract class EventEmitter {\n  private listeners_: {\n    [eventType: string]: Array<{\n      callback(...args: unknown[]): void;\n      context: unknown;\n    }>;\n  } = {};\n\n  constructor(private allowedEvents_: string[]) {\n    assert(\n      Array.isArray(allowedEvents_) && allowedEvents_.length > 0,\n      'Requires a non-empty array'\n    );\n  }\n\n  /**\n   * To be overridden by derived classes in order to fire an initial event when\n   * somebody subscribes for data.\n   *\n   * @returns {Array.<*>} Array of parameters to trigger initial event with.\n   */\n  abstract getInitialEvent(eventType: string): unknown[];\n\n  /**\n   * To be called by derived classes to trigger events.\n   */\n  protected trigger(eventType: string, ...varArgs: unknown[]): void {\n    if (Array.isArray(this.listeners_[eventType])) {\n      // Clone the list, since callbacks could add/remove listeners.\n      const listeners = [...this.listeners_[eventType]];\n\n      for (let i = 0; i < listeners.length; i++) {\n        listeners[i].callback.apply(listeners[i].context, varArgs);\n      }\n    }\n  }\n\n  on(\n    eventType: string,\n    callback: (a: unknown) => void,\n    context: unknown\n  ): void {\n    this.validateEventType_(eventType);\n    this.listeners_[eventType] = this.listeners_[eventType] || [];\n    this.listeners_[eventType].push({ callback, context });\n\n    const eventData = this.getInitialEvent(eventType);\n    if (eventData) {\n      //@ts-ignore\n      callback.apply(context, eventData);\n    }\n  }\n\n  off(\n    eventType: string,\n    callback: (a: unknown) => void,\n    context: unknown\n  ): void {\n    this.validateEventType_(eventType);\n    const listeners = this.listeners_[eventType] || [];\n    for (let i = 0; i < listeners.length; i++) {\n      if (\n        listeners[i].callback === callback &&\n        (!context || context === listeners[i].context)\n      ) {\n        listeners.splice(i, 1);\n        return;\n      }\n    }\n  }\n\n  private validateEventType_(eventType: string): void {\n    assert(\n      this.allowedEvents_.find(et => {\n        return et === eventType;\n      }),\n      'Unknown event: ' + eventType\n    );\n  }\n}\n","/**\n * @license\n * Copyright 2025 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { assert } from '@firebase/util';\n\nimport { EventEmitter } from './eventEmitter';\n\ndeclare const document: Document;\n\n// 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.\nexport class VisibilityMonitor extends EventEmitter {\n  private visible_: boolean;\n\n  static getInstance(): VisibilityMonitor {\n    return new VisibilityMonitor();\n  }\n\n  constructor() {\n    super(['visible']);\n    let hidden: string;\n    let visibilityChange: string;\n    if (\n      typeof document !== 'undefined' &&\n      typeof document.addEventListener !== 'undefined'\n    ) {\n      if (typeof document['hidden'] !== 'undefined') {\n        // Opera 12.10 and Firefox 18 and later support\n        visibilityChange = 'visibilitychange';\n        hidden = 'hidden';\n      } // @ts-ignore\n      else if (typeof document['mozHidden'] !== 'undefined') {\n        visibilityChange = 'mozvisibilitychange';\n        hidden = 'mozHidden';\n      } // @ts-ignore\n      else if (typeof document['msHidden'] !== 'undefined') {\n        visibilityChange = 'msvisibilitychange';\n        hidden = 'msHidden';\n      } // @ts-ignore\n      else if (typeof document['webkitHidden'] !== 'undefined') {\n        visibilityChange = 'webkitvisibilitychange';\n        hidden = 'webkitHidden';\n      }\n    }\n\n    // Initially, we always assume we are visible. This ensures that in browsers\n    // without page visibility support or in cases where we are never visible\n    // (e.g. chrome extension), we act as if we are visible, i.e. don't delay\n    // reconnects\n    this.visible_ = true;\n\n    // @ts-ignore\n    if (visibilityChange) {\n      document.addEventListener(\n        visibilityChange,\n        () => {\n          // @ts-ignore\n          const visible = !document[hidden];\n          if (visible !== this.visible_) {\n            this.visible_ = visible;\n            this.trigger('visible', visible);\n          }\n        },\n        false\n      );\n    }\n  }\n\n  getInitialEvent(eventType: string): boolean[] {\n    assert(eventType === 'visible', 'Unknown event type: ' + eventType);\n    return [this.visible_];\n  }\n}\n","/**\n * @license\n * Copyright 2025 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { _FirebaseInstallationsInternal } from '@firebase/installations';\nimport { Logger } from '@firebase/logger';\nimport {\n  ConfigUpdate,\n  ConfigUpdateObserver,\n  FetchResponse,\n  FirebaseRemoteConfigObject\n} from '../public_types';\nimport { calculateBackoffMillis, FirebaseError } from '@firebase/util';\nimport { ERROR_FACTORY, ErrorCode } from '../errors';\nimport { Storage } from '../storage/storage';\nimport { VisibilityMonitor } from './visibility_monitor';\nimport { StorageCache } from '../storage/storage_cache';\nimport {\n  FetchRequest,\n  RemoteConfigAbortSignal\n} from './remote_config_fetch_client';\nimport { CachingClient } from './caching_client';\n\nconst API_KEY_HEADER = 'X-Goog-Api-Key';\nconst INSTALLATIONS_AUTH_TOKEN_HEADER = 'X-Goog-Firebase-Installations-Auth';\nconst ORIGINAL_RETRIES = 8;\nconst MAXIMUM_FETCH_ATTEMPTS = 3;\nconst NO_BACKOFF_TIME_IN_MILLIS = -1;\nconst NO_FAILED_REALTIME_STREAMS = 0;\nconst REALTIME_DISABLED_KEY = 'featureDisabled';\nconst REALTIME_RETRY_INTERVAL = 'retryIntervalSeconds';\nconst TEMPLATE_VERSION_KEY = 'latestTemplateVersionNumber';\n\nexport class RealtimeHandler {\n  constructor(\n    private readonly firebaseInstallations: _FirebaseInstallationsInternal,\n    private readonly storage: Storage,\n    private readonly sdkVersion: string,\n    private readonly namespace: string,\n    private readonly projectId: string,\n    private readonly apiKey: string,\n    private readonly appId: string,\n    private readonly logger: Logger,\n    private readonly storageCache: StorageCache,\n    private readonly cachingClient: CachingClient\n  ) {\n    void this.setRetriesRemaining();\n    void VisibilityMonitor.getInstance().on(\n      'visible',\n      this.onVisibilityChange,\n      this\n    );\n  }\n\n  private observers: Set<ConfigUpdateObserver> =\n    new Set<ConfigUpdateObserver>();\n  private isConnectionActive: boolean = false;\n  private isRealtimeDisabled: boolean = false;\n  private controller?: AbortController;\n  private reader: ReadableStreamDefaultReader<Uint8Array> | undefined;\n  private httpRetriesRemaining: number = ORIGINAL_RETRIES;\n  private isInBackground: boolean = false;\n  private readonly decoder = new TextDecoder('utf-8');\n  private isClosingConnection: boolean = false;\n\n  private async setRetriesRemaining(): Promise<void> {\n    // Retrieve number of remaining retries from last session. The minimum retry count being one.\n    const metadata = await this.storage.getRealtimeBackoffMetadata();\n    const numFailedStreams = metadata?.numFailedStreams || 0;\n    this.httpRetriesRemaining = Math.max(\n      ORIGINAL_RETRIES - numFailedStreams,\n      1\n    );\n  }\n\n  private propagateError = (e: FirebaseError): void =>\n    this.observers.forEach(o => o.error?.(e));\n\n  /**\n   * Increment the number of failed stream attempts, increase the backoff duration, set the backoff\n   * end time to \"backoff duration\" after `lastFailedStreamTime` and persist the new\n   * values to storage metadata.\n   */\n  private async updateBackoffMetadataWithLastFailedStreamConnectionTime(\n    lastFailedStreamTime: Date\n  ): Promise<void> {\n    const numFailedStreams =\n      ((await this.storage.getRealtimeBackoffMetadata())?.numFailedStreams ||\n        0) + 1;\n    const backoffMillis = calculateBackoffMillis(numFailedStreams, 60000, 2);\n    await this.storage.setRealtimeBackoffMetadata({\n      backoffEndTimeMillis: new Date(\n        lastFailedStreamTime.getTime() + backoffMillis\n      ),\n      numFailedStreams\n    });\n  }\n\n  /**\n   * Increase the backoff duration with a new end time based on Retry Interval.\n   */\n  private async updateBackoffMetadataWithRetryInterval(\n    retryIntervalSeconds: number\n  ): Promise<void> {\n    const currentTime = Date.now();\n    const backoffDurationInMillis = retryIntervalSeconds * 1000;\n    const backoffEndTime = new Date(currentTime + backoffDurationInMillis);\n    const numFailedStreams = 0;\n    await this.storage.setRealtimeBackoffMetadata({\n      backoffEndTimeMillis: backoffEndTime,\n      numFailedStreams\n    });\n    await this.retryHttpConnectionWhenBackoffEnds();\n  }\n\n  /**\n   * HTTP status code that the Realtime client should retry on.\n   */\n  private isStatusCodeRetryable = (statusCode?: number): boolean => {\n    const retryableStatusCodes = [\n      408, // Request Timeout\n      429, // Too Many Requests\n      502, // Bad Gateway\n      503, // Service Unavailable\n      504 // Gateway Timeout\n    ];\n    return !statusCode || retryableStatusCodes.includes(statusCode);\n  };\n\n  /**\n   * Closes the realtime HTTP connection.\n   * Note: This method is designed to be called only once at a time.\n   * If a call is already in progress, subsequent calls will be ignored.\n   */\n  private async closeRealtimeHttpConnection(): Promise<void> {\n    if (this.isClosingConnection) {\n      return;\n    }\n    this.isClosingConnection = true;\n\n    try {\n      if (this.reader) {\n        await this.reader.cancel();\n      }\n    } catch (e) {\n      // The network connection was lost, so cancel() failed.\n      // This is expected in a disconnected state, so we can safely ignore the error.\n      this.logger.debug('Failed to cancel the reader, connection was lost.');\n    } finally {\n      this.reader = undefined;\n    }\n\n    if (this.controller) {\n      await this.controller.abort();\n      this.controller = undefined;\n    }\n\n    this.isClosingConnection = false;\n  }\n\n  private async resetRealtimeBackoff(): Promise<void> {\n    await this.storage.setRealtimeBackoffMetadata({\n      backoffEndTimeMillis: new Date(-1),\n      numFailedStreams: 0\n    });\n  }\n\n  private resetRetryCount(): void {\n    this.httpRetriesRemaining = ORIGINAL_RETRIES;\n  }\n\n  /**\n   * Assembles the request headers and body and executes the fetch request to\n   * establish the real-time streaming connection. This is the \"worker\" method\n   * that performs the actual network communication.\n   */\n  private async establishRealtimeConnection(\n    url: URL,\n    installationId: string,\n    installationTokenResult: string,\n    signal: AbortSignal\n  ): Promise<Response> {\n    const eTagValue = await this.storage.getActiveConfigEtag();\n    const lastKnownVersionNumber =\n      await this.storage.getActiveConfigTemplateVersion();\n\n    const headers = {\n      [API_KEY_HEADER]: this.apiKey,\n      [INSTALLATIONS_AUTH_TOKEN_HEADER]: installationTokenResult,\n      'Content-Type': 'application/json',\n      'Accept': 'application/json',\n      'If-None-Match': eTagValue || '*',\n      'Content-Encoding': 'gzip'\n    };\n\n    const requestBody = {\n      project: this.projectId,\n      namespace: this.namespace,\n      lastKnownVersionNumber,\n      appId: this.appId,\n      sdkVersion: this.sdkVersion,\n      appInstanceId: installationId\n    };\n\n    const response = await fetch(url, {\n      method: 'POST',\n      headers,\n      body: JSON.stringify(requestBody),\n      signal\n    });\n    return response;\n  }\n\n  private getRealtimeUrl(): URL {\n    const urlBase =\n      window.FIREBASE_REMOTE_CONFIG_URL_BASE ||\n      'https://firebaseremoteconfigrealtime.googleapis.com';\n\n    const urlString = `${urlBase}/v1/projects/${this.projectId}/namespaces/${this.namespace}:streamFetchInvalidations?key=${this.apiKey}`;\n    return new URL(urlString);\n  }\n\n  private async createRealtimeConnection(): Promise<Response> {\n    const [installationId, installationTokenResult] = await Promise.all([\n      this.firebaseInstallations.getId(),\n      this.firebaseInstallations.getToken(false)\n    ]);\n    this.controller = new AbortController();\n    const url = this.getRealtimeUrl();\n    const realtimeConnection = await this.establishRealtimeConnection(\n      url,\n      installationId,\n      installationTokenResult,\n      this.controller.signal\n    );\n    return realtimeConnection;\n  }\n\n  /**\n   * Retries HTTP stream connection asyncly in random time intervals.\n   */\n  private async retryHttpConnectionWhenBackoffEnds(): Promise<void> {\n    let backoffMetadata = await this.storage.getRealtimeBackoffMetadata();\n    if (!backoffMetadata) {\n      backoffMetadata = {\n        backoffEndTimeMillis: new Date(NO_BACKOFF_TIME_IN_MILLIS),\n        numFailedStreams: NO_FAILED_REALTIME_STREAMS\n      };\n    }\n    const backoffEndTime = new Date(\n      backoffMetadata.backoffEndTimeMillis\n    ).getTime();\n    const currentTime = Date.now();\n    const retryMillis = Math.max(0, backoffEndTime - currentTime);\n    await this.makeRealtimeHttpConnection(retryMillis);\n  }\n\n  private setIsHttpConnectionRunning(connectionRunning: boolean): void {\n    this.isConnectionActive = connectionRunning;\n  }\n\n  /**\n   * Combines the check and set operations to prevent multiple asynchronous\n   * calls from redundantly starting an HTTP connection. This ensures that\n   * only one attempt is made at a time.\n   */\n  private checkAndSetHttpConnectionFlagIfNotRunning(): boolean {\n    const canMakeConnection = this.canEstablishStreamConnection();\n    if (canMakeConnection) {\n      this.setIsHttpConnectionRunning(true);\n    }\n    return canMakeConnection;\n  }\n\n  private fetchResponseIsUpToDate(\n    fetchResponse: FetchResponse,\n    lastKnownVersion: number\n  ): boolean {\n    // If there is a config, make sure its version is >= the last known version.\n    if (fetchResponse.config != null && fetchResponse.templateVersion) {\n      return fetchResponse.templateVersion >= lastKnownVersion;\n    }\n    // If there isn't a config, return true if the fetch was successful and backend had no update.\n    // Else, it returned an out of date config.\n    return this.storageCache.getLastFetchStatus() === 'success';\n  }\n\n  private parseAndValidateConfigUpdateMessage(message: string): string {\n    const left = message.indexOf('{');\n    const right = message.indexOf('}', left);\n\n    if (left < 0 || right < 0) {\n      return '';\n    }\n    return left >= right ? '' : message.substring(left, right + 1);\n  }\n\n  private isEventListenersEmpty(): boolean {\n    return this.observers.size === 0;\n  }\n\n  private getRandomInt(max: number): number {\n    return Math.floor(Math.random() * max);\n  }\n\n  private executeAllListenerCallbacks(configUpdate: ConfigUpdate): void {\n    this.observers.forEach(observer => observer.next(configUpdate));\n  }\n\n  /**\n   * Compares two configuration objects and returns a set of keys that have changed.\n   * A key is considered changed if it's new, removed, or has a different value.\n   */\n  private getChangedParams(\n    newConfig: FirebaseRemoteConfigObject,\n    oldConfig: FirebaseRemoteConfigObject\n  ): Set<string> {\n    const changedKeys = new Set<string>();\n    const newKeys = new Set(Object.keys(newConfig || {}));\n    const oldKeys = new Set(Object.keys(oldConfig || {}));\n\n    for (const key of newKeys) {\n      if (!oldKeys.has(key) || newConfig[key] !== oldConfig[key]) {\n        changedKeys.add(key);\n      }\n    }\n\n    for (const key of oldKeys) {\n      if (!newKeys.has(key)) {\n        changedKeys.add(key);\n      }\n    }\n\n    return changedKeys;\n  }\n\n  private async fetchLatestConfig(\n    remainingAttempts: number,\n    targetVersion: number\n  ): Promise<void> {\n    const remainingAttemptsAfterFetch = remainingAttempts - 1;\n    const currentAttempt = MAXIMUM_FETCH_ATTEMPTS - remainingAttemptsAfterFetch;\n    const customSignals = this.storageCache.getCustomSignals();\n    if (customSignals) {\n      this.logger.debug(\n        `Fetching config with custom signals: ${JSON.stringify(customSignals)}`\n      );\n    }\n    const abortSignal = new RemoteConfigAbortSignal();\n    try {\n      const fetchRequest: FetchRequest = {\n        cacheMaxAgeMillis: 0,\n        signal: abortSignal,\n        customSignals,\n        fetchType: 'REALTIME',\n        fetchAttempt: currentAttempt\n      };\n\n      const fetchResponse: FetchResponse = await this.cachingClient.fetch(\n        fetchRequest\n      );\n      let activatedConfigs = await this.storage.getActiveConfig();\n\n      if (!this.fetchResponseIsUpToDate(fetchResponse, targetVersion)) {\n        this.logger.debug(\n          \"Fetched template version is the same as SDK's current version.\" +\n            ' Retrying fetch.'\n        );\n        // Continue fetching until template version number is greater than current.\n        await this.autoFetch(remainingAttemptsAfterFetch, targetVersion);\n        return;\n      }\n\n      if (fetchResponse.config == null) {\n        this.logger.debug(\n          'The fetch succeeded, but the backend had no updates.'\n        );\n        return;\n      }\n\n      if (activatedConfigs == null) {\n        activatedConfigs = {};\n      }\n\n      const updatedKeys = this.getChangedParams(\n        fetchResponse.config,\n        activatedConfigs\n      );\n\n      if (updatedKeys.size === 0) {\n        this.logger.debug('Config was fetched, but no params changed.');\n        return;\n      }\n\n      const configUpdate: ConfigUpdate = {\n        getUpdatedKeys(): Set<string> {\n          return new Set(updatedKeys);\n        }\n      };\n      this.executeAllListenerCallbacks(configUpdate);\n    } catch (e: unknown) {\n      const errorMessage = e instanceof Error ? e.message : String(e);\n      const error = ERROR_FACTORY.create(ErrorCode.CONFIG_UPDATE_NOT_FETCHED, {\n        originalErrorMessage: `Failed to auto-fetch config update: ${errorMessage}`\n      });\n      this.propagateError(error);\n    }\n  }\n\n  private async autoFetch(\n    remainingAttempts: number,\n    targetVersion: number\n  ): Promise<void> {\n    if (remainingAttempts === 0) {\n      const error = ERROR_FACTORY.create(ErrorCode.CONFIG_UPDATE_NOT_FETCHED, {\n        originalErrorMessage:\n          'Unable to fetch the latest version of the template.'\n      });\n      this.propagateError(error);\n      return;\n    }\n\n    const timeTillFetchSeconds = this.getRandomInt(4);\n    const timeTillFetchInMiliseconds = timeTillFetchSeconds * 1000;\n\n    await new Promise(resolve =>\n      setTimeout(resolve, timeTillFetchInMiliseconds)\n    );\n    await this.fetchLatestConfig(remainingAttempts, targetVersion);\n  }\n\n  /**\n   * Processes a stream of real-time messages for configuration updates.\n   * This method reassembles fragmented messages, validates and parses the JSON,\n   * and automatically fetches a new config if a newer template version is available.\n   * It also handles server-specified retry intervals and propagates errors for\n   * invalid messages or when real-time updates are disabled.\n   */\n  private async handleNotifications(\n    reader: ReadableStreamDefaultReader<Uint8Array>\n  ): Promise<void> {\n    let partialConfigUpdateMessage: string;\n    let currentConfigUpdateMessage = '';\n\n    while (true) {\n      const { done, value } = await reader.read();\n      if (done) {\n        break;\n      }\n\n      partialConfigUpdateMessage = this.decoder.decode(value, { stream: true });\n      currentConfigUpdateMessage += partialConfigUpdateMessage;\n\n      if (partialConfigUpdateMessage.includes('}')) {\n        currentConfigUpdateMessage = this.parseAndValidateConfigUpdateMessage(\n          currentConfigUpdateMessage\n        );\n\n        if (currentConfigUpdateMessage.length === 0) {\n          continue;\n        }\n\n        try {\n          const jsonObject = JSON.parse(currentConfigUpdateMessage);\n\n          if (this.isEventListenersEmpty()) {\n            break;\n          }\n\n          if (\n            REALTIME_DISABLED_KEY in jsonObject &&\n            jsonObject[REALTIME_DISABLED_KEY] === true\n          ) {\n            const error = ERROR_FACTORY.create(\n              ErrorCode.CONFIG_UPDATE_UNAVAILABLE,\n              {\n                originalErrorMessage:\n                  'The server is temporarily unavailable. Try again in a few minutes.'\n              }\n            );\n            this.propagateError(error);\n            break;\n          }\n\n          if (TEMPLATE_VERSION_KEY in jsonObject) {\n            const oldTemplateVersion =\n              await this.storage.getActiveConfigTemplateVersion();\n            const targetTemplateVersion = Number(\n              jsonObject[TEMPLATE_VERSION_KEY]\n            );\n            if (\n              oldTemplateVersion &&\n              targetTemplateVersion > oldTemplateVersion\n            ) {\n              await this.autoFetch(\n                MAXIMUM_FETCH_ATTEMPTS,\n                targetTemplateVersion\n              );\n            }\n          }\n\n          // This field in the response indicates that the realtime request should retry after the\n          // specified interval to establish a long-lived connection. This interval extends the\n          // backoff duration without affecting the number of retries, so it will not enter an\n          // exponential backoff state.\n          if (REALTIME_RETRY_INTERVAL in jsonObject) {\n            const retryIntervalSeconds = Number(\n              jsonObject[REALTIME_RETRY_INTERVAL]\n            );\n            await this.updateBackoffMetadataWithRetryInterval(\n              retryIntervalSeconds\n            );\n          }\n        } catch (e: unknown) {\n          this.logger.debug('Unable to parse latest config update message.', e);\n          const errorMessage = e instanceof Error ? e.message : String(e);\n          this.propagateError(\n            ERROR_FACTORY.create(ErrorCode.CONFIG_UPDATE_MESSAGE_INVALID, {\n              originalErrorMessage: errorMessage\n            })\n          );\n        }\n        currentConfigUpdateMessage = '';\n      }\n    }\n  }\n\n  private async listenForNotifications(\n    reader: ReadableStreamDefaultReader\n  ): Promise<void> {\n    try {\n      await this.handleNotifications(reader);\n    } catch (e) {\n      // If the real-time connection is at an unexpected lifecycle state when the app is\n      // backgrounded, it's expected closing the connection will throw an exception.\n      if (!this.isInBackground) {\n        // Otherwise, the real-time server connection was closed due to a transient issue.\n        this.logger.debug(\n          'Real-time connection was closed due to an exception.'\n        );\n      }\n    }\n  }\n\n  /**\n   * Open the real-time connection, begin listening for updates, and auto-fetch when an update is\n   * received.\n   *\n   * If the connection is successful, this method will block on its thread while it reads the\n   * chunk-encoded HTTP body. When the connection closes, it attempts to reestablish the stream.\n   */\n  private async prepareAndBeginRealtimeHttpStream(): Promise<void> {\n    if (!this.checkAndSetHttpConnectionFlagIfNotRunning()) {\n      return;\n    }\n\n    let backoffMetadata = await this.storage.getRealtimeBackoffMetadata();\n    if (!backoffMetadata) {\n      backoffMetadata = {\n        backoffEndTimeMillis: new Date(NO_BACKOFF_TIME_IN_MILLIS),\n        numFailedStreams: NO_FAILED_REALTIME_STREAMS\n      };\n    }\n    const backoffEndTime = backoffMetadata.backoffEndTimeMillis.getTime();\n    if (Date.now() < backoffEndTime) {\n      await this.retryHttpConnectionWhenBackoffEnds();\n      return;\n    }\n\n    let response: Response | undefined;\n    let responseCode: number | undefined;\n    try {\n      response = await this.createRealtimeConnection();\n      responseCode = response.status;\n      if (response.ok && response.body) {\n        this.resetRetryCount();\n        await this.resetRealtimeBackoff();\n        const reader = response.body.getReader();\n        this.reader = reader;\n        // Start listening for realtime notifications.\n        await this.listenForNotifications(reader);\n      }\n    } catch (error) {\n      if (this.isInBackground) {\n        // It's possible the app was backgrounded while the connection was open, which\n        // threw an exception trying to read the response. No real error here, so treat\n        // this as a success, even if we haven't read a 200 response code yet.\n        this.resetRetryCount();\n      } else {\n        //there might have been a transient error so the client will retry the connection.\n        this.logger.debug(\n          'Exception connecting to real-time RC backend. Retrying the connection...:',\n          error\n        );\n      }\n    } finally {\n      // Close HTTP connection and associated streams.\n      await this.closeRealtimeHttpConnection();\n      this.setIsHttpConnectionRunning(false);\n\n      // Update backoff metadata if the connection failed in the foreground.\n      const connectionFailed =\n        !this.isInBackground &&\n        (responseCode === undefined ||\n          this.isStatusCodeRetryable(responseCode));\n\n      if (connectionFailed) {\n        await this.updateBackoffMetadataWithLastFailedStreamConnectionTime(\n          new Date()\n        );\n      }\n      // If responseCode is null then no connection was made to server and the SDK should still retry.\n      if (connectionFailed || response?.ok) {\n        await this.retryHttpConnectionWhenBackoffEnds();\n      } else {\n        const errorMessage = `Unable to connect to the server. HTTP status code: ${responseCode}`;\n        const firebaseError = ERROR_FACTORY.create(\n          ErrorCode.CONFIG_UPDATE_STREAM_ERROR,\n          {\n            originalErrorMessage: errorMessage\n          }\n        );\n        this.propagateError(firebaseError);\n      }\n    }\n  }\n\n  /**\n   * Checks whether connection can be made or not based on some conditions\n   * @returns booelean\n   */\n  private canEstablishStreamConnection(): boolean {\n    const hasActiveListeners = this.observers.size > 0;\n    const isNotDisabled = !this.isRealtimeDisabled;\n    const isNoConnectionActive = !this.isConnectionActive;\n    const inForeground = !this.isInBackground;\n    return (\n      hasActiveListeners &&\n      isNotDisabled &&\n      isNoConnectionActive &&\n      inForeground\n    );\n  }\n\n  private async makeRealtimeHttpConnection(delayMillis: number): Promise<void> {\n    if (!this.canEstablishStreamConnection()) {\n      return;\n    }\n    if (this.httpRetriesRemaining > 0) {\n      this.httpRetriesRemaining--;\n      await new Promise(resolve => setTimeout(resolve, delayMillis));\n      void this.prepareAndBeginRealtimeHttpStream();\n    } else if (!this.isInBackground) {\n      const error = ERROR_FACTORY.create(ErrorCode.CONFIG_UPDATE_STREAM_ERROR, {\n        originalErrorMessage:\n          'Unable to connect to the server. Check your connection and try again.'\n      });\n      this.propagateError(error);\n    }\n  }\n\n  private async beginRealtime(): Promise<void> {\n    if (this.observers.size > 0) {\n      await this.makeRealtimeHttpConnection(0);\n    }\n  }\n\n  /**\n   * Adds an observer to the realtime updates.\n   * @param observer The observer to add.\n   */\n  addObserver(observer: ConfigUpdateObserver): void {\n    this.observers.add(observer);\n    void this.beginRealtime();\n  }\n\n  /**\n   * Removes an observer from the realtime updates.\n   * @param observer The observer to remove.\n   */\n  removeObserver(observer: ConfigUpdateObserver): void {\n    if (this.observers.has(observer)) {\n      this.observers.delete(observer);\n    }\n  }\n\n  /**\n   * Handles changes to the application's visibility state, managing the real-time connection.\n   *\n   * When the application is moved to the background, this method closes the existing\n   * real-time connection to save resources. When the application returns to the\n   * foreground, it attempts to re-establish the connection.\n   */\n  private async onVisibilityChange(visible: unknown): Promise<void> {\n    this.isInBackground = !visible;\n    if (!visible) {\n      await this.closeRealtimeHttpConnection();\n    } else if (visible) {\n      await this.beginRealtime();\n    }\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nimport {\n  _registerComponent,\n  registerVersion,\n  SDK_VERSION\n} from '@firebase/app';\nimport { isIndexedDBAvailable } from '@firebase/util';\nimport {\n  Component,\n  ComponentType,\n  ComponentContainer\n} from '@firebase/component';\nimport { Logger, LogLevel as FirebaseLogLevel } from '@firebase/logger';\nimport { RemoteConfig, RemoteConfigOptions } from './public_types';\nimport { name as packageName, version } from '../package.json';\nimport { ensureInitialized } from './api';\nimport { CachingClient } from './client/caching_client';\nimport { RestClient } from './client/rest_client';\nimport { RetryingClient } from './client/retrying_client';\nimport { RC_COMPONENT_NAME } from './constants';\nimport { ErrorCode, ERROR_FACTORY } from './errors';\nimport { RemoteConfig as RemoteConfigImpl } from './remote_config';\nimport { IndexedDbStorage, InMemoryStorage } from './storage/storage';\nimport { StorageCache } from './storage/storage_cache';\nimport { RealtimeHandler } from './client/realtime_handler';\n// This needs to be in the same file that calls `getProvider()` on the component\n// or it will get tree-shaken out.\nimport '@firebase/installations';\n\nexport function registerRemoteConfig(): void {\n  _registerComponent(\n    new Component(\n      RC_COMPONENT_NAME,\n      remoteConfigFactory,\n      ComponentType.PUBLIC\n    ).setMultipleInstances(true)\n  );\n\n  registerVersion(packageName, version);\n  // BUILD_TARGET will be replaced by values like esm, cjs, etc during the compilation\n  registerVersion(packageName, version, '__BUILD_TARGET__');\n\n  function remoteConfigFactory(\n    container: ComponentContainer,\n    { options }: { options?: RemoteConfigOptions }\n  ): RemoteConfig {\n    /* Dependencies */\n    // getImmediate for FirebaseApp will always succeed\n    const app = container.getProvider('app').getImmediate();\n    // The following call will always succeed because rc has `import '@firebase/installations'`\n    const installations = container\n      .getProvider('installations-internal')\n      .getImmediate();\n\n    // Normalizes optional inputs.\n    const { projectId, apiKey, appId } = app.options;\n    if (!projectId) {\n      throw ERROR_FACTORY.create(ErrorCode.REGISTRATION_PROJECT_ID);\n    }\n    if (!apiKey) {\n      throw ERROR_FACTORY.create(ErrorCode.REGISTRATION_API_KEY);\n    }\n    if (!appId) {\n      throw ERROR_FACTORY.create(ErrorCode.REGISTRATION_APP_ID);\n    }\n    const namespace = options?.templateId || 'firebase';\n\n    const storage = isIndexedDBAvailable()\n      ? new IndexedDbStorage(appId, app.name, namespace)\n      : new InMemoryStorage();\n    const storageCache = new StorageCache(storage);\n\n    const logger = new Logger(packageName);\n\n    // Sets ERROR as the default log level.\n    // See RemoteConfig#setLogLevel for corresponding normalization to ERROR log level.\n    logger.logLevel = FirebaseLogLevel.ERROR;\n\n    const restClient = new RestClient(\n      installations,\n      // Uses the JS SDK version, by which the RC package version can be deduced, if necessary.\n      SDK_VERSION,\n      namespace,\n      projectId,\n      apiKey,\n      appId\n    );\n    const retryingClient = new RetryingClient(restClient, storage);\n    const cachingClient = new CachingClient(\n      retryingClient,\n      storage,\n      storageCache,\n      logger\n    );\n\n    const realtimeHandler = new RealtimeHandler(\n      installations,\n      storage,\n      SDK_VERSION,\n      namespace,\n      projectId,\n      apiKey,\n      appId,\n      logger,\n      storageCache,\n      cachingClient\n    );\n\n    const remoteConfigInstance = new RemoteConfigImpl(\n      app,\n      cachingClient,\n      storageCache,\n      storage,\n      logger,\n      realtimeHandler\n    );\n\n    // Starts warming cache.\n    // eslint-disable-next-line @typescript-eslint/no-floating-promises\n    ensureInitialized(remoteConfigInstance);\n\n    return remoteConfigInstance;\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { RemoteConfig } from './public_types';\nimport { activate, fetchConfig } from './api';\nimport {\n  getModularInstance,\n  isIndexedDBAvailable,\n  validateIndexedDBOpenable\n} from '@firebase/util';\n\n// This API is put in a separate file, so we can stub fetchConfig and activate in tests.\n// It's not possible to stub standalone functions from the same module.\n/**\n *\n * Performs fetch and activate operations, as a convenience.\n *\n * @param remoteConfig - The {@link RemoteConfig} instance.\n *\n * @returns A `Promise` which resolves to true if the current call activated the fetched configs.\n * If the fetched configs were already activated, the `Promise` will resolve to false.\n *\n * @public\n */\nexport async function fetchAndActivate(\n  remoteConfig: RemoteConfig\n): Promise<boolean> {\n  remoteConfig = getModularInstance(remoteConfig);\n  await fetchConfig(remoteConfig);\n  return activate(remoteConfig);\n}\n\n/**\n * This method provides two different checks:\n *\n * 1. Check if IndexedDB exists in the browser environment.\n * 2. Check if the current browser context allows IndexedDB `open()` calls.\n *\n * @returns A `Promise` which resolves to true if a {@link RemoteConfig} instance\n * can be initialized in this environment, or false if it cannot.\n * @public\n */\nexport async function isSupported(): Promise<boolean> {\n  if (!isIndexedDBAvailable()) {\n    return false;\n  }\n\n  try {\n    const isDBOpenable: boolean = await validateIndexedDBOpenable();\n    return isDBOpenable;\n  } catch (error) {\n    return false;\n  }\n}\n","/**\n * The Firebase Remote Config Web SDK.\n * This SDK does not work in a Node.js environment.\n *\n * @packageDocumentation\n */\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { registerRemoteConfig } from './register';\n\n// Facilitates debugging by enabling settings changes without rebuilding asset.\n// Note these debug options are not part of a documented, supported API and can change at any time.\n// Consolidates debug options for easier discovery.\n// Uses transient variables on window to avoid lingering state causing panic.\ndeclare global {\n  interface Window {\n    FIREBASE_REMOTE_CONFIG_URL_BASE: string;\n  }\n}\n\nexport * from './api';\nexport * from './api2';\nexport * from './public_types';\n\n/** register component and version 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\ No newline at end of file
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/package.json b/frontend-old/node_modules/@firebase/remote-config/dist/esm/package.json
deleted file mode 100644
index 7c34deb..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/package.json
+++ /dev/null
@@ -1 +0,0 @@
-{"type":"module"}
\ No newline at end of file
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/api.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/api.d.ts
deleted file mode 100644
index 0f16c48..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/api.d.ts
+++ /dev/null
@@ -1,144 +0,0 @@
-/**
- * @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.
- */
-import { FirebaseApp } from '@firebase/app';
-import { CustomSignals, LogLevel as RemoteConfigLogLevel, RemoteConfig, Value, RemoteConfigOptions, ConfigUpdateObserver, Unsubscribe } from './public_types';
-/**
- *
- * @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
- */
-export declare function getRemoteConfig(app?: FirebaseApp, options?: RemoteConfigOptions): RemoteConfig;
-/**
- * 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
- */
-export declare function activate(remoteConfig: RemoteConfig): Promise<boolean>;
-/**
- * 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
- */
-export declare function ensureInitialized(remoteConfig: RemoteConfig): Promise<void>;
-/**
- * Fetches and caches configuration from the Remote Config service.
- * @param remoteConfig - The {@link RemoteConfig} instance.
- * @public
- */
-export declare function fetchConfig(remoteConfig: RemoteConfig): Promise<void>;
-/**
- * Gets all config.
- *
- * @param remoteConfig - The {@link RemoteConfig} instance.
- * @returns All config.
- *
- * @public
- */
-export declare function getAll(remoteConfig: RemoteConfig): Record<string, Value>;
-/**
- * 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
- */
-export declare function getBoolean(remoteConfig: RemoteConfig, key: string): boolean;
-/**
- * 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
- */
-export declare function getNumber(remoteConfig: RemoteConfig, key: string): number;
-/**
- * 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
- */
-export declare function getString(remoteConfig: RemoteConfig, key: string): string;
-/**
- * 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
- */
-export declare function getValue(remoteConfig: RemoteConfig, key: string): Value;
-/**
- * Defines the log level to use.
- *
- * @param remoteConfig - The {@link RemoteConfig} instance.
- * @param logLevel - The log level to set.
- *
- * @public
- */
-export declare function setLogLevel(remoteConfig: RemoteConfig, logLevel: RemoteConfigLogLevel): void;
-/**
- * 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
- */
-export declare function setCustomSignals(remoteConfig: RemoteConfig, customSignals: CustomSignals): Promise<void>;
-/**
- * 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
- */
-export declare function onConfigUpdate(remoteConfig: RemoteConfig, observer: ConfigUpdateObserver): Unsubscribe;
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/api2.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/api2.d.ts
deleted file mode 100644
index ea6a655..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/api2.d.ts
+++ /dev/null
@@ -1,40 +0,0 @@
-/**
- * @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.
- */
-import { RemoteConfig } from './public_types';
-/**
- *
- * 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
- */
-export declare function fetchAndActivate(remoteConfig: RemoteConfig): Promise<boolean>;
-/**
- * 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
- */
-export declare function isSupported(): Promise<boolean>;
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/caching_client.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/caching_client.d.ts
deleted file mode 100644
index c05bd5f..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/caching_client.d.ts
+++ /dev/null
@@ -1,46 +0,0 @@
-/**
- * @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.
- */
-import { StorageCache } from '../storage/storage_cache';
-import { FetchResponse } from '../public_types';
-import { RemoteConfigFetchClient, FetchRequest } from './remote_config_fetch_client';
-import { Storage } from '../storage/storage';
-import { Logger } from '@firebase/logger';
-/**
- * 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.
- */
-export declare class CachingClient implements RemoteConfigFetchClient {
-    private readonly client;
-    private readonly storage;
-    private readonly storageCache;
-    private readonly logger;
-    constructor(client: RemoteConfigFetchClient, storage: Storage, storageCache: StorageCache, 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: number, lastSuccessfulFetchTimestampMillis: number | undefined): boolean;
-    fetch(request: FetchRequest): Promise<FetchResponse>;
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/eventEmitter.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/eventEmitter.d.ts
deleted file mode 100644
index 2f8b9cc..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/eventEmitter.d.ts
+++ /dev/null
@@ -1,39 +0,0 @@
-/**
- * @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.
- */
-/**
- * Base class to be used if you want to emit events. Call the constructor with
- * the set of allowed event names.
- */
-export declare abstract class EventEmitter {
-    private allowedEvents_;
-    private listeners_;
-    constructor(allowedEvents_: string[]);
-    /**
-     * To be overridden by derived classes in order to fire an initial event when
-     * somebody subscribes for data.
-     *
-     * @returns {Array.<*>} Array of parameters to trigger initial event with.
-     */
-    abstract getInitialEvent(eventType: string): unknown[];
-    /**
-     * To be called by derived classes to trigger events.
-     */
-    protected trigger(eventType: string, ...varArgs: unknown[]): void;
-    on(eventType: string, callback: (a: unknown) => void, context: unknown): void;
-    off(eventType: string, callback: (a: unknown) => void, context: unknown): void;
-    private validateEventType_;
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/realtime_handler.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/realtime_handler.d.ts
deleted file mode 100644
index 3fa7c87..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/realtime_handler.d.ts
+++ /dev/null
@@ -1,141 +0,0 @@
-/**
- * @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.
- */
-import { _FirebaseInstallationsInternal } from '@firebase/installations';
-import { Logger } from '@firebase/logger';
-import { ConfigUpdateObserver } from '../public_types';
-import { Storage } from '../storage/storage';
-import { StorageCache } from '../storage/storage_cache';
-import { CachingClient } from './caching_client';
-export declare class RealtimeHandler {
-    private readonly firebaseInstallations;
-    private readonly storage;
-    private readonly sdkVersion;
-    private readonly namespace;
-    private readonly projectId;
-    private readonly apiKey;
-    private readonly appId;
-    private readonly logger;
-    private readonly storageCache;
-    private readonly cachingClient;
-    constructor(firebaseInstallations: _FirebaseInstallationsInternal, storage: Storage, sdkVersion: string, namespace: string, projectId: string, apiKey: string, appId: string, logger: Logger, storageCache: StorageCache, cachingClient: CachingClient);
-    private observers;
-    private isConnectionActive;
-    private isRealtimeDisabled;
-    private controller?;
-    private reader;
-    private httpRetriesRemaining;
-    private isInBackground;
-    private readonly decoder;
-    private isClosingConnection;
-    private setRetriesRemaining;
-    private propagateError;
-    /**
-     * 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.
-     */
-    private updateBackoffMetadataWithLastFailedStreamConnectionTime;
-    /**
-     * Increase the backoff duration with a new end time based on Retry Interval.
-     */
-    private updateBackoffMetadataWithRetryInterval;
-    /**
-     * HTTP status code that the Realtime client should retry on.
-     */
-    private isStatusCodeRetryable;
-    /**
-     * 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.
-     */
-    private closeRealtimeHttpConnection;
-    private resetRealtimeBackoff;
-    private resetRetryCount;
-    /**
-     * 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.
-     */
-    private establishRealtimeConnection;
-    private getRealtimeUrl;
-    private createRealtimeConnection;
-    /**
-     * Retries HTTP stream connection asyncly in random time intervals.
-     */
-    private retryHttpConnectionWhenBackoffEnds;
-    private setIsHttpConnectionRunning;
-    /**
-     * 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.
-     */
-    private checkAndSetHttpConnectionFlagIfNotRunning;
-    private fetchResponseIsUpToDate;
-    private parseAndValidateConfigUpdateMessage;
-    private isEventListenersEmpty;
-    private getRandomInt;
-    private executeAllListenerCallbacks;
-    /**
-     * 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.
-     */
-    private getChangedParams;
-    private fetchLatestConfig;
-    private autoFetch;
-    /**
-     * 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.
-     */
-    private handleNotifications;
-    private listenForNotifications;
-    /**
-     * 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.
-     */
-    private prepareAndBeginRealtimeHttpStream;
-    /**
-     * Checks whether connection can be made or not based on some conditions
-     * @returns booelean
-     */
-    private canEstablishStreamConnection;
-    private makeRealtimeHttpConnection;
-    private beginRealtime;
-    /**
-     * Adds an observer to the realtime updates.
-     * @param observer The observer to add.
-     */
-    addObserver(observer: ConfigUpdateObserver): void;
-    /**
-     * Removes an observer from the realtime updates.
-     * @param observer The observer to remove.
-     */
-    removeObserver(observer: ConfigUpdateObserver): void;
-    /**
-     * 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.
-     */
-    private onVisibilityChange;
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/remote_config_fetch_client.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/remote_config_fetch_client.d.ts
deleted file mode 100644
index e72ce51..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/remote_config_fetch_client.d.ts
+++ /dev/null
@@ -1,104 +0,0 @@
-/**
- * @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.
- */
-import { CustomSignals, FetchResponse, FetchType } from '../public_types';
-/**
- * Defines a client, as in https://en.wikipedia.org/wiki/Client%E2%80%93server_model, for the
- * Remote Config server (https://firebase.google.com/docs/reference/remote-config/rest).
- *
- * <p>Abstracts throttle, response cache and network implementation details.
- *
- * <p>Modeled after the native {@link GlobalFetch} interface, which is relatively modern and
- * convenient, but simplified for Remote Config's use case.
- *
- * Disambiguation: {@link GlobalFetch} interface and the Remote Config service define "fetch"
- * methods. The RestClient uses the former to make HTTP calls. This interface abstracts the latter.
- */
-export interface RemoteConfigFetchClient {
-    /**
-     * @throws if response status is not 200 or 304.
-     */
-    fetch(request: FetchRequest): Promise<FetchResponse>;
-}
-/**
- * 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.
- */
-export declare class RemoteConfigAbortSignal {
-    listeners: Array<() => void>;
-    addEventListener(listener: () => void): void;
-    abort(): void;
-}
-/**
- * Defines per-request inputs for the Remote Config fetch request.
- *
- * <p>Modeled after the native {@link Request} interface, but simplified for Remote Config's
- * use case.
- */
-export interface FetchRequest {
-    /**
-     * Uses cached config if it is younger than this age.
-     *
-     * <p>Required because it's defined by settings, which always have a value.
-     *
-     * <p>Comparable to passing `headers = { 'Cache-Control': max-age <maxAge> }` to the native
-     * Fetch API.
-     */
-    cacheMaxAgeMillis: number;
-    /**
-     * An event bus for the signal to abort a request.
-     *
-     * <p>Required because all requests should be abortable.
-     *
-     * <p>Comparable to the native
-     * Fetch API's "signal" field on its request configuration object
-     * https://fetch.spec.whatwg.org/#dom-requestinit-signal.
-     *
-     * <p>Disambiguation: Remote Config commonly refers to API inputs as
-     * "signals". See the private ConfigFetchRequestBody interface for those:
-     * http://google3/firebase/remote_config/web/src/core/rest_client.ts?l=14&rcl=255515243.
-     */
-    signal: RemoteConfigAbortSignal;
-    /**
-     * The ETag header value from the last response.
-     *
-     * <p>Optional in case this is the first request.
-     *
-     * <p>Comparable to passing `headers = { 'If-None-Match': <eTag> }` to the native Fetch API.
-     */
-    eTag?: string;
-    /** The custom signals stored for the app instance.
-     *
-     * <p>Optional in case no custom signals are set for the instance.
-     */
-    customSignals?: CustomSignals;
-    /**
-     * The type of fetch to perform, such as a regular fetch or a real-time fetch.
-     *
-     * Optional as not all fetch requests need to be distinguished.
-     */
-    fetchType?: FetchType;
-    /**
-     * The number of fetch attempts made so far for this request.
-     *
-     * Optional as not all fetch requests are part of a retry series.
-     */
-    fetchAttempt?: number;
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/rest_client.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/rest_client.d.ts
deleted file mode 100644
index 24a3fe0..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/rest_client.d.ts
+++ /dev/null
@@ -1,41 +0,0 @@
-/**
- * @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.
- */
-import { FetchResponse } from '../public_types';
-import { RemoteConfigFetchClient, FetchRequest } from './remote_config_fetch_client';
-import { _FirebaseInstallationsInternal } from '@firebase/installations';
-/**
- * Implements the Client abstraction for the Remote Config REST API.
- */
-export declare class RestClient implements RemoteConfigFetchClient {
-    private readonly firebaseInstallations;
-    private readonly sdkVersion;
-    private readonly namespace;
-    private readonly projectId;
-    private readonly apiKey;
-    private readonly appId;
-    constructor(firebaseInstallations: _FirebaseInstallationsInternal, sdkVersion: string, namespace: string, projectId: string, apiKey: string, appId: string);
-    /**
-     * 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.
-     */
-    fetch(request: FetchRequest): Promise<FetchResponse>;
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/retrying_client.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/retrying_client.d.ts
deleted file mode 100644
index 06c7ff0..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/retrying_client.d.ts
+++ /dev/null
@@ -1,50 +0,0 @@
-/**
- * @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.
- */
-import { FetchResponse } from '../public_types';
-import { RemoteConfigAbortSignal, RemoteConfigFetchClient, FetchRequest } from './remote_config_fetch_client';
-import { ThrottleMetadata, Storage } from '../storage/storage';
-/**
- * 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.
- */
-export declare function setAbortableTimeout(signal: RemoteConfigAbortSignal, throttleEndTimeMillis: number): Promise<void>;
-/**
- * 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).
- */
-export declare class RetryingClient implements RemoteConfigFetchClient {
-    private readonly client;
-    private readonly storage;
-    constructor(client: RemoteConfigFetchClient, storage: Storage);
-    fetch(request: FetchRequest): Promise<FetchResponse>;
-    /**
-     * A recursive helper for attempting a fetch request repeatedly.
-     *
-     * @throws any non-retriable errors.
-     */
-    attemptFetch(request: FetchRequest, { throttleEndTimeMillis, backoffCount }: ThrottleMetadata): Promise<FetchResponse>;
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/visibility_monitor.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/visibility_monitor.d.ts
deleted file mode 100644
index ef40083..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/client/visibility_monitor.d.ts
+++ /dev/null
@@ -1,23 +0,0 @@
-/**
- * @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.
- */
-import { EventEmitter } from './eventEmitter';
-export declare class VisibilityMonitor extends EventEmitter {
-    private visible_;
-    static getInstance(): VisibilityMonitor;
-    constructor();
-    getInitialEvent(eventType: string): boolean[];
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/constants.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/constants.d.ts
deleted file mode 100644
index 1663d8f..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/constants.d.ts
+++ /dev/null
@@ -1,20 +0,0 @@
-/**
- * @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.
- */
-export declare const RC_COMPONENT_NAME = "remote-config";
-export declare const RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS = 100;
-export declare const RC_CUSTOM_SIGNAL_KEY_MAX_LENGTH = 250;
-export declare const RC_CUSTOM_SIGNAL_VALUE_MAX_LENGTH = 500;
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/errors.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/errors.d.ts
deleted file mode 100644
index 3cf0b55..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/errors.d.ts
+++ /dev/null
@@ -1,83 +0,0 @@
-/**
- * @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.
- */
-import { ErrorFactory } from '@firebase/util';
-export declare const enum ErrorCode {
-    ALREADY_INITIALIZED = "already-initialized",
-    REGISTRATION_WINDOW = "registration-window",
-    REGISTRATION_PROJECT_ID = "registration-project-id",
-    REGISTRATION_API_KEY = "registration-api-key",
-    REGISTRATION_APP_ID = "registration-app-id",
-    STORAGE_OPEN = "storage-open",
-    STORAGE_GET = "storage-get",
-    STORAGE_SET = "storage-set",
-    STORAGE_DELETE = "storage-delete",
-    FETCH_NETWORK = "fetch-client-network",
-    FETCH_TIMEOUT = "fetch-timeout",
-    FETCH_THROTTLE = "fetch-throttle",
-    FETCH_PARSE = "fetch-client-parse",
-    FETCH_STATUS = "fetch-status",
-    INDEXED_DB_UNAVAILABLE = "indexed-db-unavailable",
-    CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS = "custom-signal-max-allowed-signals",
-    CONFIG_UPDATE_STREAM_ERROR = "stream-error",
-    CONFIG_UPDATE_UNAVAILABLE = "realtime-unavailable",
-    CONFIG_UPDATE_MESSAGE_INVALID = "update-message-invalid",
-    CONFIG_UPDATE_NOT_FETCHED = "update-not-fetched"
-}
-interface ErrorParams {
-    [ErrorCode.STORAGE_OPEN]: {
-        originalErrorMessage: string | undefined;
-    };
-    [ErrorCode.STORAGE_GET]: {
-        originalErrorMessage: string | undefined;
-    };
-    [ErrorCode.STORAGE_SET]: {
-        originalErrorMessage: string | undefined;
-    };
-    [ErrorCode.STORAGE_DELETE]: {
-        originalErrorMessage: string | undefined;
-    };
-    [ErrorCode.FETCH_NETWORK]: {
-        originalErrorMessage: string;
-    };
-    [ErrorCode.FETCH_THROTTLE]: {
-        throttleEndTimeMillis: number;
-    };
-    [ErrorCode.FETCH_PARSE]: {
-        originalErrorMessage: string;
-    };
-    [ErrorCode.FETCH_STATUS]: {
-        httpStatus: number;
-    };
-    [ErrorCode.CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS]: {
-        maxSignals: number;
-    };
-    [ErrorCode.CONFIG_UPDATE_STREAM_ERROR]: {
-        originalErrorMessage: string;
-    };
-    [ErrorCode.CONFIG_UPDATE_UNAVAILABLE]: {
-        originalErrorMessage: string;
-    };
-    [ErrorCode.CONFIG_UPDATE_MESSAGE_INVALID]: {
-        originalErrorMessage: string;
-    };
-    [ErrorCode.CONFIG_UPDATE_NOT_FETCHED]: {
-        originalErrorMessage: string;
-    };
-}
-export declare const ERROR_FACTORY: ErrorFactory<ErrorCode, ErrorParams>;
-export declare function hasErrorCode(e: Error, errorCode: ErrorCode): boolean;
-export {};
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/index.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/index.d.ts
deleted file mode 100644
index fc0de52..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/index.d.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-/**
- * The Firebase Remote Config Web SDK.
- * This SDK does not work in a Node.js environment.
- *
- * @packageDocumentation
- */
-declare global {
-    interface Window {
-        FIREBASE_REMOTE_CONFIG_URL_BASE: string;
-    }
-}
-export * from './api';
-export * from './api2';
-export * from './public_types';
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/language.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/language.d.ts
deleted file mode 100644
index 2bfc669..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/language.d.ts
+++ /dev/null
@@ -1,26 +0,0 @@
-/**
- * @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.
- */
-/**
- * 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}.
- */
-export declare function getUserLanguage(navigatorLanguage?: NavigatorLanguage): string;
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/public_types.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/public_types.d.ts
deleted file mode 100644
index 5c58c66..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/public_types.d.ts
+++ /dev/null
@@ -1,255 +0,0 @@
-/**
- * @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.
- */
-import { FirebaseApp, FirebaseError } from '@firebase/app';
-/**
- * The Firebase Remote Config service interface.
- *
- * @public
- */
-export interface RemoteConfig {
-    /**
-     * The {@link @firebase/app#FirebaseApp} this `RemoteConfig` instance is associated with.
-     */
-    app: FirebaseApp;
-    /**
-     * Defines configuration for the Remote Config SDK.
-     */
-    settings: RemoteConfigSettings;
-    /**
-     * Object containing default values for configs.
-     */
-    defaultConfig: {
-        [key: string]: string | number | boolean;
-    };
-    /**
-     * The Unix timestamp in milliseconds of the last <i>successful</i> fetch, or negative one if
-     * the {@link RemoteConfig} instance either hasn't fetched or initialization
-     * is incomplete.
-     */
-    fetchTimeMillis: number;
-    /**
-     * The status of the last fetch <i>attempt</i>.
-     */
-    lastFetchStatus: FetchStatus;
-}
-/**
- * Defines a self-descriptive reference for config key-value pairs.
- *
- *  @public
- */
-export interface FirebaseRemoteConfigObject {
-    [key: string]: string;
-}
-/**
- * Defines a successful response (200 or 304).
- *
- * <p>Modeled after the native `Response` interface, but simplified for Remote Config's
- * use case.
- *
- * @public
- */
-export interface FetchResponse {
-    /**
-     * The HTTP status, which is useful for differentiating success responses with data from
-     * those without.
-     *
-     * <p>The Remote Config client is modeled after the native `Fetch` interface, so
-     * HTTP status is first-class.
-     *
-     * <p>Disambiguation: the fetch response returns a legacy "state" value that is redundant with the
-     * HTTP status code. The former is normalized into the latter.
-     */
-    status: number;
-    /**
-     * Defines the ETag response header value.
-     *
-     * <p>Only defined for 200 and 304 responses.
-     */
-    eTag?: string;
-    /**
-     * Defines the map of parameters returned as "entries" in the fetch response body.
-     *
-     * <p>Only defined for 200 responses.
-     */
-    config?: FirebaseRemoteConfigObject;
-    /**
-     * The version number of the config template fetched from the server.
-     */
-    templateVersion?: number;
-}
-/**
- * Options for Remote Config initialization.
- *
- * @public
- */
-export interface RemoteConfigOptions {
-    /**
-     * The ID of the template to use. If not provided, defaults to "firebase".
-     */
-    templateId?: string;
-    /**
-     * Hydrates the state with an initial fetch response.
-     */
-    initialFetchResponse?: FetchResponse;
-}
-/**
- * Indicates the source of a value.
- *
- * <ul>
- *   <li>"static" indicates the value was defined by a static constant.</li>
- *   <li>"default" indicates the value was defined by default config.</li>
- *   <li>"remote" indicates the value was defined by fetched config.</li>
- * </ul>
- *
- * @public
- */
-export type ValueSource = 'static' | 'default' | 'remote';
-/**
- * Wraps a value with metadata and type-safe getters.
- *
- * @public
- */
-export interface Value {
-    /**
-     * Gets the value as a boolean.
-     *
-     * The following values (case-insensitive) are interpreted as true:
-     * "1", "true", "t", "yes", "y", "on". Other values are interpreted as false.
-     */
-    asBoolean(): boolean;
-    /**
-     * Gets the value as a number. Comparable to calling <code>Number(value) || 0</code>.
-     */
-    asNumber(): number;
-    /**
-     * Gets the value as a string.
-     */
-    asString(): string;
-    /**
-     * Gets the {@link ValueSource} for the given key.
-     */
-    getSource(): ValueSource;
-}
-/**
- * Defines configuration options for the Remote Config SDK.
- *
- * @public
- */
-export interface RemoteConfigSettings {
-    /**
-     * Defines the maximum age in milliseconds of an entry in the config cache before
-     * it is considered stale. Defaults to 43200000 (Twelve hours).
-     */
-    minimumFetchIntervalMillis: number;
-    /**
-     * Defines the maximum amount of milliseconds to wait for a response when fetching
-     * configuration from the Remote Config server. Defaults to 60000 (One minute).
-     */
-    fetchTimeoutMillis: number;
-}
-/**
- * Summarizes the outcome of the last attempt to fetch config from the Firebase Remote Config server.
- *
- * <ul>
- *   <li>"no-fetch-yet" indicates the {@link RemoteConfig} instance has not yet attempted
- *       to fetch config, or that SDK initialization is incomplete.</li>
- *   <li>"success" indicates the last attempt succeeded.</li>
- *   <li>"failure" indicates the last attempt failed.</li>
- *   <li>"throttle" indicates the last attempt was rate-limited.</li>
- * </ul>
- *
- * @public
- */
-export type FetchStatus = 'no-fetch-yet' | 'success' | 'failure' | 'throttle';
-/**
- * Defines levels of Remote Config logging.
- *
- * @public
- */
-export type LogLevel = 'debug' | 'error' | 'silent';
-/**
- * Defines the type for representing custom signals and their values.
- *
- * <p>The values in CustomSignals must be one of the following types:
- *
- * <ul>
- *   <li><code>string</code>
- *   <li><code>number</code>
- *   <li><code>null</code>
- * </ul>
- *
- * @public
- */
-export interface CustomSignals {
-    [key: string]: string | number | null;
-}
-/**
- * Contains information about which keys have been updated.
- *
- * @public
- */
-export interface ConfigUpdate {
-    /**
-     * Parameter keys whose values have been updated from the currently activated values.
-     * Includes keys that are added, deleted, or whose value, value source, or metadata has changed.
-     */
-    getUpdatedKeys(): Set<string>;
-}
-/**
- * Observer interface for receiving real-time Remote Config update notifications.
- *
- * NOTE: Although an `complete` callback can be provided, it will
- * never be called because the ConfigUpdate stream is never-ending.
- *
- * @public
- */
-export interface ConfigUpdateObserver {
-    /**
-     * Called when a new ConfigUpdate is available.
-     */
-    next: (configUpdate: ConfigUpdate) => void;
-    /**
-     * Called if an error occurs during the stream.
-     */
-    error: (error: FirebaseError) => void;
-    /**
-     * Called when the stream is gracefully terminated.
-     */
-    complete: () => void;
-}
-/**
- * A function that unsubscribes from a real-time event stream.
- *
- * @public
- */
-export type Unsubscribe = () => void;
-/**
- * Indicates the type of fetch request.
- *
- * <ul>
- *   <li>"BASE" indicates a standard fetch request.</li>
- *   <li>"REALTIME" indicates a fetch request triggered by a real-time update.</li>
- * </ul>
- *
- * @public
- */
-export type FetchType = 'BASE' | 'REALTIME';
-declare module '@firebase/component' {
-    interface NameServiceMapping {
-        'remote-config': RemoteConfig;
-    }
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/register.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/register.d.ts
deleted file mode 100644
index 5aab5ab..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/register.d.ts
+++ /dev/null
@@ -1,2 +0,0 @@
-import '@firebase/installations';
-export declare function registerRemoteConfig(): void;
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/remote_config.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/remote_config.d.ts
deleted file mode 100644
index e72b28f..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/remote_config.d.ts
+++ /dev/null
@@ -1,88 +0,0 @@
-/**
- * @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.
- */
-import { FirebaseApp } from '@firebase/app';
-import { RemoteConfig as RemoteConfigType, FetchStatus, RemoteConfigSettings } from './public_types';
-import { StorageCache } from './storage/storage_cache';
-import { RemoteConfigFetchClient } from './client/remote_config_fetch_client';
-import { Storage } from './storage/storage';
-import { Logger } from '@firebase/logger';
-import { RealtimeHandler } from './client/realtime_handler';
-/**
- * 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.
- */
-export declare class RemoteConfig implements RemoteConfigType {
-    readonly app: FirebaseApp;
-    /**
-     * @internal
-     */
-    readonly _client: RemoteConfigFetchClient;
-    /**
-     * @internal
-     */
-    readonly _storageCache: StorageCache;
-    /**
-     * @internal
-     */
-    readonly _storage: Storage;
-    /**
-     * @internal
-     */
-    readonly _logger: Logger;
-    /**
-     * @internal
-     */
-    readonly _realtimeHandler: RealtimeHandler;
-    /**
-     * Tracks completion of initialization promise.
-     * @internal
-     */
-    _isInitializationComplete: boolean;
-    /**
-     * De-duplicates initialization calls.
-     * @internal
-     */
-    _initializePromise?: Promise<void>;
-    settings: RemoteConfigSettings;
-    defaultConfig: {
-        [key: string]: string | number | boolean;
-    };
-    get fetchTimeMillis(): number;
-    get lastFetchStatus(): FetchStatus;
-    constructor(app: FirebaseApp, 
-    /**
-     * @internal
-     */
-    _client: RemoteConfigFetchClient, 
-    /**
-     * @internal
-     */
-    _storageCache: StorageCache, 
-    /**
-     * @internal
-     */
-    _storage: Storage, 
-    /**
-     * @internal
-     */
-    _logger: Logger, 
-    /**
-     * @internal
-     */
-    _realtimeHandler: RealtimeHandler);
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/storage/storage.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/storage/storage.d.ts
deleted file mode 100644
index df20b57..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/storage/storage.d.ts
+++ /dev/null
@@ -1,116 +0,0 @@
-/**
- * @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.
- */
-import { FetchStatus, CustomSignals } from '@firebase/remote-config-types';
-import { FetchResponse, FirebaseRemoteConfigObject } from '../public_types';
-/**
- * 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.
- */
-export declare const APP_NAMESPACE_STORE = "app_namespace_store";
-/**
- * Encapsulates metadata concerning throttled fetch requests.
- */
-export interface ThrottleMetadata {
-    backoffCount: number;
-    throttleEndTimeMillis: number;
-}
-export interface RealtimeBackoffMetadata {
-    numFailedStreams: number;
-    backoffEndTimeMillis: Date;
-}
-/**
- * Provides type-safety for the "key" field used by {@link APP_NAMESPACE_STORE}.
- *
- * <p>This seems like a small price to avoid potentially subtle bugs caused by a typo.
- */
-type ProjectNamespaceKeyFieldValue = 'active_config' | 'active_config_etag' | 'last_fetch_status' | 'last_successful_fetch_timestamp_millis' | 'last_successful_fetch_response' | 'settings' | 'throttle_metadata' | 'custom_signals' | 'realtime_backoff_metadata' | 'last_known_template_version';
-export declare function openDatabase(): Promise<IDBDatabase>;
-/**
- * Abstracts data persistence.
- */
-export declare abstract class Storage {
-    getLastFetchStatus(): Promise<FetchStatus | undefined>;
-    setLastFetchStatus(status: FetchStatus): Promise<void>;
-    getLastSuccessfulFetchTimestampMillis(): Promise<number | undefined>;
-    setLastSuccessfulFetchTimestampMillis(timestamp: number): Promise<void>;
-    getLastSuccessfulFetchResponse(): Promise<FetchResponse | undefined>;
-    setLastSuccessfulFetchResponse(response: FetchResponse): Promise<void>;
-    getActiveConfig(): Promise<FirebaseRemoteConfigObject | undefined>;
-    setActiveConfig(config: FirebaseRemoteConfigObject): Promise<void>;
-    getActiveConfigEtag(): Promise<string | undefined>;
-    setActiveConfigEtag(etag: string): Promise<void>;
-    getThrottleMetadata(): Promise<ThrottleMetadata | undefined>;
-    setThrottleMetadata(metadata: ThrottleMetadata): Promise<void>;
-    deleteThrottleMetadata(): Promise<void>;
-    getCustomSignals(): Promise<CustomSignals | undefined>;
-    abstract setCustomSignals(customSignals: CustomSignals): Promise<CustomSignals>;
-    abstract get<T>(key: ProjectNamespaceKeyFieldValue): Promise<T | undefined>;
-    abstract set<T>(key: ProjectNamespaceKeyFieldValue, value: T): Promise<void>;
-    abstract delete(key: ProjectNamespaceKeyFieldValue): Promise<void>;
-    getRealtimeBackoffMetadata(): Promise<RealtimeBackoffMetadata | undefined>;
-    setRealtimeBackoffMetadata(realtimeMetadata: RealtimeBackoffMetadata): Promise<void>;
-    getActiveConfigTemplateVersion(): Promise<number | undefined>;
-    setActiveConfigTemplateVersion(version: number): Promise<void>;
-}
-export declare class IndexedDbStorage extends Storage {
-    private readonly appId;
-    private readonly appName;
-    private readonly namespace;
-    private readonly openDbPromise;
-    /**
-     * @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: string, appName: string, namespace: string, openDbPromise?: Promise<IDBDatabase>);
-    setCustomSignals(customSignals: CustomSignals): Promise<CustomSignals>;
-    /**
-     * 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.
-     */
-    getWithTransaction<T>(key: ProjectNamespaceKeyFieldValue, transaction: IDBTransaction): Promise<T | undefined>;
-    /**
-     * 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.
-     */
-    setWithTransaction<T>(key: ProjectNamespaceKeyFieldValue, value: T, transaction: IDBTransaction): Promise<void>;
-    get<T>(key: ProjectNamespaceKeyFieldValue): Promise<T | undefined>;
-    set<T>(key: ProjectNamespaceKeyFieldValue, value: T): Promise<void>;
-    delete(key: ProjectNamespaceKeyFieldValue): Promise<void>;
-    createCompositeKey(key: ProjectNamespaceKeyFieldValue): string;
-}
-export declare class InMemoryStorage extends Storage {
-    private storage;
-    get<T>(key: ProjectNamespaceKeyFieldValue): Promise<T>;
-    set<T>(key: ProjectNamespaceKeyFieldValue, value: T): Promise<void>;
-    delete(key: ProjectNamespaceKeyFieldValue): Promise<void>;
-    setCustomSignals(customSignals: CustomSignals): Promise<CustomSignals>;
-}
-export {};
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/storage/storage_cache.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/storage/storage_cache.d.ts
deleted file mode 100644
index e61c523..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/storage/storage_cache.d.ts
+++ /dev/null
@@ -1,51 +0,0 @@
-/**
- * @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.
- */
-import { FetchStatus, CustomSignals } from '@firebase/remote-config-types';
-import { FirebaseRemoteConfigObject } from '../public_types';
-import { Storage } from './storage';
-/**
- * A memory cache layer over storage to support the SDK's synchronous read requirements.
- */
-export declare class StorageCache {
-    private readonly storage;
-    constructor(storage: Storage);
-    /**
-     * Memory caches.
-     */
-    private lastFetchStatus?;
-    private lastSuccessfulFetchTimestampMillis?;
-    private activeConfig?;
-    private customSignals?;
-    /**
-     * Memory-only getters
-     */
-    getLastFetchStatus(): FetchStatus | undefined;
-    getLastSuccessfulFetchTimestampMillis(): number | undefined;
-    getActiveConfig(): FirebaseRemoteConfigObject | undefined;
-    getCustomSignals(): CustomSignals | undefined;
-    /**
-     * Read-ahead getter
-     */
-    loadFromStorage(): Promise<void>;
-    /**
-     * Write-through setters
-     */
-    setLastFetchStatus(status: FetchStatus): Promise<void>;
-    setLastSuccessfulFetchTimestampMillis(timestampMillis: number): Promise<void>;
-    setActiveConfig(activeConfig: FirebaseRemoteConfigObject): Promise<void>;
-    setCustomSignals(customSignals: CustomSignals): Promise<void>;
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/value.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/value.d.ts
deleted file mode 100644
index 13e29c3..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/src/value.d.ts
+++ /dev/null
@@ -1,26 +0,0 @@
-/**
- * @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.
- */
-import { Value as ValueType, ValueSource } from '@firebase/remote-config-types';
-export declare class Value implements ValueType {
-    private readonly _source;
-    private readonly _value;
-    constructor(_source: ValueSource, _value?: string);
-    asString(): string;
-    asBoolean(): boolean;
-    asNumber(): number;
-    getSource(): ValueSource;
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/esm/test/setup.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/esm/test/setup.d.ts
deleted file mode 100644
index 1c93d90..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/esm/test/setup.d.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * @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.
- */
-export {};
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
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/index.cjs.js.map b/frontend-old/node_modules/@firebase/remote-config/dist/index.cjs.js.map
deleted file mode 100644
index c0e40be..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/index.cjs.js.map
+++ /dev/null
@@ -1 +0,0 @@
-{"version":3,"file":"index.cjs.js","sources":["../src/client/remote_config_fetch_client.ts","../src/constants.ts","../src/errors.ts","../src/value.ts","../src/api.ts","../src/client/caching_client.ts","../src/language.ts","../src/client/rest_client.ts","../src/client/retrying_client.ts","../src/remote_config.ts","../src/storage/storage.ts","../src/storage/storage_cache.ts","../src/client/eventEmitter.ts","../src/client/visibility_monitor.ts","../src/client/realtime_handler.ts","../src/register.ts","../src/api2.ts","../src/index.ts"],"sourcesContent":["/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { CustomSignals, FetchResponse, FetchType } from '../public_types';\n\n/**\n * Defines a client, as in https://en.wikipedia.org/wiki/Client%E2%80%93server_model, for the\n * Remote Config server (https://firebase.google.com/docs/reference/remote-config/rest).\n *\n * <p>Abstracts throttle, response cache and network implementation details.\n *\n * <p>Modeled after the native {@link GlobalFetch} interface, which is relatively modern and\n * convenient, but simplified for Remote Config's use case.\n *\n * Disambiguation: {@link GlobalFetch} interface and the Remote Config service define \"fetch\"\n * methods. The RestClient uses the former to make HTTP calls. This interface abstracts the latter.\n */\nexport interface RemoteConfigFetchClient {\n  /**\n   * @throws if response status is not 200 or 304.\n   */\n  fetch(request: FetchRequest): Promise<FetchResponse>;\n}\n\n/**\n * Shims a minimal AbortSignal.\n *\n * <p>AbortController's AbortSignal conveniently decouples fetch timeout logic from other aspects\n * of networking, such as retries. Firebase doesn't use AbortController enough to justify a\n * polyfill recommendation, like we do with the Fetch API, but this minimal shim can easily be\n * swapped out if/when we do.\n */\nexport class RemoteConfigAbortSignal {\n  listeners: Array<() => void> = [];\n  addEventListener(listener: () => void): void {\n    this.listeners.push(listener);\n  }\n  abort(): void {\n    this.listeners.forEach(listener => listener());\n  }\n}\n\n/**\n * Defines per-request inputs for the Remote Config fetch request.\n *\n * <p>Modeled after the native {@link Request} interface, but simplified for Remote Config's\n * use case.\n */\nexport interface FetchRequest {\n  /**\n   * Uses cached config if it is younger than this age.\n   *\n   * <p>Required because it's defined by settings, which always have a value.\n   *\n   * <p>Comparable to passing `headers = { 'Cache-Control': max-age <maxAge> }` to the native\n   * Fetch API.\n   */\n  cacheMaxAgeMillis: number;\n\n  /**\n   * An event bus for the signal to abort a request.\n   *\n   * <p>Required because all requests should be abortable.\n   *\n   * <p>Comparable to the native\n   * Fetch API's \"signal\" field on its request configuration object\n   * https://fetch.spec.whatwg.org/#dom-requestinit-signal.\n   *\n   * <p>Disambiguation: Remote Config commonly refers to API inputs as\n   * \"signals\". See the private ConfigFetchRequestBody interface for those:\n   * http://google3/firebase/remote_config/web/src/core/rest_client.ts?l=14&rcl=255515243.\n   */\n  signal: RemoteConfigAbortSignal;\n\n  /**\n   * The ETag header value from the last response.\n   *\n   * <p>Optional in case this is the first request.\n   *\n   * <p>Comparable to passing `headers = { 'If-None-Match': <eTag> }` to the native Fetch API.\n   */\n  eTag?: string;\n\n  /** The custom signals stored for the app instance.\n   *\n   * <p>Optional in case no custom signals are set for the instance.\n   */\n  customSignals?: CustomSignals;\n\n  /**\n   * The type of fetch to perform, such as a regular fetch or a real-time fetch.\n   *\n   * Optional as not all fetch requests need to be distinguished.\n   */\n  fetchType?: FetchType;\n\n  /**\n   * The number of fetch attempts made so far for this request.\n   *\n   * Optional as not all fetch requests are part of a retry series.\n   */\n  fetchAttempt?: number;\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nexport const RC_COMPONENT_NAME = 'remote-config';\nexport const RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS = 100;\nexport const RC_CUSTOM_SIGNAL_KEY_MAX_LENGTH = 250;\nexport const RC_CUSTOM_SIGNAL_VALUE_MAX_LENGTH = 500;\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { ErrorFactory, FirebaseError } from '@firebase/util';\n\nexport const enum ErrorCode {\n  ALREADY_INITIALIZED = 'already-initialized',\n  REGISTRATION_WINDOW = 'registration-window',\n  REGISTRATION_PROJECT_ID = 'registration-project-id',\n  REGISTRATION_API_KEY = 'registration-api-key',\n  REGISTRATION_APP_ID = 'registration-app-id',\n  STORAGE_OPEN = 'storage-open',\n  STORAGE_GET = 'storage-get',\n  STORAGE_SET = 'storage-set',\n  STORAGE_DELETE = 'storage-delete',\n  FETCH_NETWORK = 'fetch-client-network',\n  FETCH_TIMEOUT = 'fetch-timeout',\n  FETCH_THROTTLE = 'fetch-throttle',\n  FETCH_PARSE = 'fetch-client-parse',\n  FETCH_STATUS = 'fetch-status',\n  INDEXED_DB_UNAVAILABLE = 'indexed-db-unavailable',\n  CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS = 'custom-signal-max-allowed-signals',\n  CONFIG_UPDATE_STREAM_ERROR = 'stream-error',\n  CONFIG_UPDATE_UNAVAILABLE = 'realtime-unavailable',\n  CONFIG_UPDATE_MESSAGE_INVALID = 'update-message-invalid',\n  CONFIG_UPDATE_NOT_FETCHED = 'update-not-fetched'\n}\n\nconst ERROR_DESCRIPTION_MAP: { readonly [key in ErrorCode]: string } = {\n  [ErrorCode.ALREADY_INITIALIZED]: 'Remote Config already initialized',\n  [ErrorCode.REGISTRATION_WINDOW]:\n    'Undefined window object. This SDK only supports usage in a browser environment.',\n  [ErrorCode.REGISTRATION_PROJECT_ID]:\n    'Undefined project identifier. Check Firebase app initialization.',\n  [ErrorCode.REGISTRATION_API_KEY]:\n    'Undefined API key. Check Firebase app initialization.',\n  [ErrorCode.REGISTRATION_APP_ID]:\n    'Undefined app identifier. Check Firebase app initialization.',\n  [ErrorCode.STORAGE_OPEN]:\n    'Error thrown when opening storage. Original error: {$originalErrorMessage}.',\n  [ErrorCode.STORAGE_GET]:\n    'Error thrown when reading from storage. Original error: {$originalErrorMessage}.',\n  [ErrorCode.STORAGE_SET]:\n    'Error thrown when writing to storage. Original error: {$originalErrorMessage}.',\n  [ErrorCode.STORAGE_DELETE]:\n    'Error thrown when deleting from storage. Original error: {$originalErrorMessage}.',\n  [ErrorCode.FETCH_NETWORK]:\n    'Fetch client failed to connect to a network. Check Internet connection.' +\n    ' Original error: {$originalErrorMessage}.',\n  [ErrorCode.FETCH_TIMEOUT]:\n    'The config fetch request timed out. ' +\n    ' Configure timeout using \"fetchTimeoutMillis\" SDK setting.',\n  [ErrorCode.FETCH_THROTTLE]:\n    'The config fetch request timed out while in an exponential backoff state.' +\n    ' Configure timeout using \"fetchTimeoutMillis\" SDK setting.' +\n    ' Unix timestamp in milliseconds when fetch request throttling ends: {$throttleEndTimeMillis}.',\n  [ErrorCode.FETCH_PARSE]:\n    'Fetch client could not parse response.' +\n    ' Original error: {$originalErrorMessage}.',\n  [ErrorCode.FETCH_STATUS]:\n    'Fetch server returned an HTTP error status. HTTP status: {$httpStatus}.',\n  [ErrorCode.INDEXED_DB_UNAVAILABLE]:\n    'Indexed DB is not supported by current browser',\n  [ErrorCode.CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS]:\n    'Setting more than {$maxSignals} custom signals is not supported.',\n  [ErrorCode.CONFIG_UPDATE_STREAM_ERROR]:\n    'The stream was not able to connect to the backend: {$originalErrorMessage}.',\n  [ErrorCode.CONFIG_UPDATE_UNAVAILABLE]:\n    'The Realtime service is unavailable: {$originalErrorMessage}',\n  [ErrorCode.CONFIG_UPDATE_MESSAGE_INVALID]:\n    'The stream invalidation message was unparsable: {$originalErrorMessage}',\n  [ErrorCode.CONFIG_UPDATE_NOT_FETCHED]:\n    'Unable to fetch the latest config: {$originalErrorMessage}'\n};\n\n// Note this is effectively a type system binding a code to params. This approach overlaps with the\n// role of TS interfaces, but works well for a few reasons:\n// 1) JS is unaware of TS interfaces, eg we can't test for interface implementation in JS\n// 2) callers should have access to a human-readable summary of the error and this interpolates\n//    params into an error message;\n// 3) callers should be able to programmatically access data associated with an error, which\n//    ErrorData provides.\ninterface ErrorParams {\n  [ErrorCode.STORAGE_OPEN]: { originalErrorMessage: string | undefined };\n  [ErrorCode.STORAGE_GET]: { originalErrorMessage: string | undefined };\n  [ErrorCode.STORAGE_SET]: { originalErrorMessage: string | undefined };\n  [ErrorCode.STORAGE_DELETE]: { originalErrorMessage: string | undefined };\n  [ErrorCode.FETCH_NETWORK]: { originalErrorMessage: string };\n  [ErrorCode.FETCH_THROTTLE]: { throttleEndTimeMillis: number };\n  [ErrorCode.FETCH_PARSE]: { originalErrorMessage: string };\n  [ErrorCode.FETCH_STATUS]: { httpStatus: number };\n  [ErrorCode.CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS]: { maxSignals: number };\n  [ErrorCode.CONFIG_UPDATE_STREAM_ERROR]: { originalErrorMessage: string };\n  [ErrorCode.CONFIG_UPDATE_UNAVAILABLE]: { originalErrorMessage: string };\n  [ErrorCode.CONFIG_UPDATE_MESSAGE_INVALID]: { originalErrorMessage: string };\n  [ErrorCode.CONFIG_UPDATE_NOT_FETCHED]: { originalErrorMessage: string };\n}\n\nexport const ERROR_FACTORY = new ErrorFactory<ErrorCode, ErrorParams>(\n  'remoteconfig' /* service */,\n  'Remote Config' /* service name */,\n  ERROR_DESCRIPTION_MAP\n);\n\n// Note how this is like typeof/instanceof, but for ErrorCode.\nexport function hasErrorCode(e: Error, errorCode: ErrorCode): boolean {\n  return e instanceof FirebaseError && e.code.indexOf(errorCode) !== -1;\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { Value as ValueType, ValueSource } from '@firebase/remote-config-types';\n\nconst DEFAULT_VALUE_FOR_BOOLEAN = false;\nconst DEFAULT_VALUE_FOR_STRING = '';\nconst DEFAULT_VALUE_FOR_NUMBER = 0;\n\nconst BOOLEAN_TRUTHY_VALUES = ['1', 'true', 't', 'yes', 'y', 'on'];\n\nexport class Value implements ValueType {\n  constructor(\n    private readonly _source: ValueSource,\n    private readonly _value: string = DEFAULT_VALUE_FOR_STRING\n  ) {}\n\n  asString(): string {\n    return this._value;\n  }\n\n  asBoolean(): boolean {\n    if (this._source === 'static') {\n      return DEFAULT_VALUE_FOR_BOOLEAN;\n    }\n    return BOOLEAN_TRUTHY_VALUES.indexOf(this._value.toLowerCase()) >= 0;\n  }\n\n  asNumber(): number {\n    if (this._source === 'static') {\n      return DEFAULT_VALUE_FOR_NUMBER;\n    }\n    let num = Number(this._value);\n    if (isNaN(num)) {\n      num = DEFAULT_VALUE_FOR_NUMBER;\n    }\n    return num;\n  }\n\n  getSource(): ValueSource {\n    return this._source;\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { _getProvider, FirebaseApp, getApp } from '@firebase/app';\nimport { deepEqual, getModularInstance } from '@firebase/util';\nimport {\n  CustomSignals,\n  LogLevel as RemoteConfigLogLevel,\n  RemoteConfig,\n  Value,\n  RemoteConfigOptions,\n  ConfigUpdateObserver,\n  Unsubscribe\n} from './public_types';\nimport { RemoteConfigAbortSignal } from './client/remote_config_fetch_client';\nimport {\n  RC_COMPONENT_NAME,\n  RC_CUSTOM_SIGNAL_KEY_MAX_LENGTH,\n  RC_CUSTOM_SIGNAL_VALUE_MAX_LENGTH\n} from './constants';\nimport { ERROR_FACTORY, ErrorCode, hasErrorCode } from './errors';\nimport { RemoteConfig as RemoteConfigImpl } from './remote_config';\nimport { Value as ValueImpl } from './value';\nimport { LogLevel as FirebaseLogLevel } from '@firebase/logger';\n\n/**\n *\n * @param app - The {@link @firebase/app#FirebaseApp} instance.\n * @param options - Optional. The {@link RemoteConfigOptions} with which to instantiate the\n *     Remote Config instance.\n * @returns A {@link RemoteConfig} instance.\n *\n * @public\n */\nexport function getRemoteConfig(\n  app: FirebaseApp = getApp(),\n  options: RemoteConfigOptions = {}\n): RemoteConfig {\n  app = getModularInstance(app);\n  const rcProvider = _getProvider(app, RC_COMPONENT_NAME);\n  if (rcProvider.isInitialized()) {\n    const initialOptions = rcProvider.getOptions() as RemoteConfigOptions;\n    if (deepEqual(initialOptions, options)) {\n      return rcProvider.getImmediate();\n    }\n    throw ERROR_FACTORY.create(ErrorCode.ALREADY_INITIALIZED);\n  }\n  rcProvider.initialize({ options });\n  const rc = rcProvider.getImmediate() as RemoteConfigImpl;\n\n  if (options.initialFetchResponse) {\n    // We use these initial writes as the initialization promise since they will hydrate the same\n    // fields that `storageCache.loadFromStorage` would set.\n    rc._initializePromise = Promise.all([\n      rc._storage.setLastSuccessfulFetchResponse(options.initialFetchResponse),\n      rc._storage.setActiveConfigEtag(options.initialFetchResponse?.eTag || ''),\n      rc._storage.setActiveConfigTemplateVersion(\n        options.initialFetchResponse.templateVersion || 0\n      ),\n      rc._storageCache.setLastSuccessfulFetchTimestampMillis(Date.now()),\n      rc._storageCache.setLastFetchStatus('success'),\n      rc._storageCache.setActiveConfig(\n        options.initialFetchResponse?.config || {}\n      )\n    ]).then();\n    // The `storageCache` methods above set their in-memory fields synchronously, so it's\n    // safe to declare our initialization complete at this point.\n    rc._isInitializationComplete = true;\n  }\n\n  return rc;\n}\n\n/**\n * Makes the last fetched config available to the getters.\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @returns A `Promise` which resolves to true if the current call activated the fetched configs.\n * If the fetched configs were already activated, the `Promise` will resolve to false.\n *\n * @public\n */\nexport async function activate(remoteConfig: RemoteConfig): Promise<boolean> {\n  const rc = getModularInstance(remoteConfig) as RemoteConfigImpl;\n  const [lastSuccessfulFetchResponse, activeConfigEtag] = await Promise.all([\n    rc._storage.getLastSuccessfulFetchResponse(),\n    rc._storage.getActiveConfigEtag()\n  ]);\n  if (\n    !lastSuccessfulFetchResponse ||\n    !lastSuccessfulFetchResponse.config ||\n    !lastSuccessfulFetchResponse.eTag ||\n    !lastSuccessfulFetchResponse.templateVersion ||\n    lastSuccessfulFetchResponse.eTag === activeConfigEtag\n  ) {\n    // Either there is no successful fetched config, or is the same as current active\n    // config.\n    return false;\n  }\n  await Promise.all([\n    rc._storageCache.setActiveConfig(lastSuccessfulFetchResponse.config),\n    rc._storage.setActiveConfigEtag(lastSuccessfulFetchResponse.eTag),\n    rc._storage.setActiveConfigTemplateVersion(\n      lastSuccessfulFetchResponse.templateVersion\n    )\n  ]);\n  return true;\n}\n\n/**\n * Ensures the last activated config are available to the getters.\n * @param remoteConfig - The {@link RemoteConfig} instance.\n *\n * @returns A `Promise` that resolves when the last activated config is available to the getters.\n * @public\n */\nexport function ensureInitialized(remoteConfig: RemoteConfig): Promise<void> {\n  const rc = getModularInstance(remoteConfig) as RemoteConfigImpl;\n  if (!rc._initializePromise) {\n    rc._initializePromise = rc._storageCache.loadFromStorage().then(() => {\n      rc._isInitializationComplete = true;\n    });\n  }\n  return rc._initializePromise;\n}\n\n/**\n * Fetches and caches configuration from the Remote Config service.\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @public\n */\nexport async function fetchConfig(remoteConfig: RemoteConfig): Promise<void> {\n  const rc = getModularInstance(remoteConfig) as RemoteConfigImpl;\n  // Aborts the request after the given timeout, causing the fetch call to\n  // reject with an `AbortError`.\n  //\n  // <p>Aborting after the request completes is a no-op, so we don't need a\n  // corresponding `clearTimeout`.\n  //\n  // Locating abort logic here because:\n  // * it uses a developer setting (timeout)\n  // * it applies to all retries (like curl's max-time arg)\n  // * it is consistent with the Fetch API's signal input\n  const abortSignal = new RemoteConfigAbortSignal();\n\n  setTimeout(async () => {\n    // Note a very low delay, eg < 10ms, can elapse before listeners are initialized.\n    abortSignal.abort();\n  }, rc.settings.fetchTimeoutMillis);\n\n  const customSignals = rc._storageCache.getCustomSignals();\n  if (customSignals) {\n    rc._logger.debug(\n      `Fetching config with custom signals: ${JSON.stringify(customSignals)}`\n    );\n  }\n  // Catches *all* errors thrown by client so status can be set consistently.\n  try {\n    await rc._client.fetch({\n      cacheMaxAgeMillis: rc.settings.minimumFetchIntervalMillis,\n      signal: abortSignal,\n      customSignals\n    });\n\n    await rc._storageCache.setLastFetchStatus('success');\n  } catch (e) {\n    const lastFetchStatus = hasErrorCode(e as Error, ErrorCode.FETCH_THROTTLE)\n      ? 'throttle'\n      : 'failure';\n    await rc._storageCache.setLastFetchStatus(lastFetchStatus);\n    throw e;\n  }\n}\n\n/**\n * Gets all config.\n *\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @returns All config.\n *\n * @public\n */\nexport function getAll(remoteConfig: RemoteConfig): Record<string, Value> {\n  const rc = getModularInstance(remoteConfig) as RemoteConfigImpl;\n  return getAllKeys(\n    rc._storageCache.getActiveConfig(),\n    rc.defaultConfig\n  ).reduce((allConfigs, key) => {\n    allConfigs[key] = getValue(remoteConfig, key);\n    return allConfigs;\n  }, {} as Record<string, Value>);\n}\n\n/**\n * Gets the value for the given key as a boolean.\n *\n * Convenience method for calling <code>remoteConfig.getValue(key).asBoolean()</code>.\n *\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @param key - The name of the parameter.\n *\n * @returns The value for the given key as a boolean.\n * @public\n */\nexport function getBoolean(remoteConfig: RemoteConfig, key: string): boolean {\n  return getValue(getModularInstance(remoteConfig), key).asBoolean();\n}\n\n/**\n * Gets the value for the given key as a number.\n *\n * Convenience method for calling <code>remoteConfig.getValue(key).asNumber()</code>.\n *\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @param key - The name of the parameter.\n *\n * @returns The value for the given key as a number.\n *\n * @public\n */\nexport function getNumber(remoteConfig: RemoteConfig, key: string): number {\n  return getValue(getModularInstance(remoteConfig), key).asNumber();\n}\n\n/**\n * Gets the value for the given key as a string.\n * Convenience method for calling <code>remoteConfig.getValue(key).asString()</code>.\n *\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @param key - The name of the parameter.\n *\n * @returns The value for the given key as a string.\n *\n * @public\n */\nexport function getString(remoteConfig: RemoteConfig, key: string): string {\n  return getValue(getModularInstance(remoteConfig), key).asString();\n}\n\n/**\n * Gets the {@link Value} for the given key.\n *\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @param key - The name of the parameter.\n *\n * @returns The value for the given key.\n *\n * @public\n */\nexport function getValue(remoteConfig: RemoteConfig, key: string): Value {\n  const rc = getModularInstance(remoteConfig) as RemoteConfigImpl;\n  if (!rc._isInitializationComplete) {\n    rc._logger.debug(\n      `A value was requested for key \"${key}\" before SDK initialization completed.` +\n        ' Await on ensureInitialized if the intent was to get a previously activated value.'\n    );\n  }\n  const activeConfig = rc._storageCache.getActiveConfig();\n  if (activeConfig && activeConfig[key] !== undefined) {\n    return new ValueImpl('remote', activeConfig[key]);\n  } else if (rc.defaultConfig && rc.defaultConfig[key] !== undefined) {\n    return new ValueImpl('default', String(rc.defaultConfig[key]));\n  }\n  rc._logger.debug(\n    `Returning static value for key \"${key}\".` +\n      ' Define a default or remote value if this is unintentional.'\n  );\n  return new ValueImpl('static');\n}\n\n/**\n * Defines the log level to use.\n *\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @param logLevel - The log level to set.\n *\n * @public\n */\nexport function setLogLevel(\n  remoteConfig: RemoteConfig,\n  logLevel: RemoteConfigLogLevel\n): void {\n  const rc = getModularInstance(remoteConfig) as RemoteConfigImpl;\n  switch (logLevel) {\n    case 'debug':\n      rc._logger.logLevel = FirebaseLogLevel.DEBUG;\n      break;\n    case 'silent':\n      rc._logger.logLevel = FirebaseLogLevel.SILENT;\n      break;\n    default:\n      rc._logger.logLevel = FirebaseLogLevel.ERROR;\n  }\n}\n\n/**\n * Dedupes and returns an array of all the keys of the received objects.\n */\nfunction getAllKeys(obj1: {} = {}, obj2: {} = {}): string[] {\n  return Object.keys({ ...obj1, ...obj2 });\n}\n\n/**\n * Sets the custom signals for the app instance.\n *\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @param customSignals - Map (key, value) of the custom signals to be set for the app instance. If\n * a key already exists, the value is overwritten. Setting the value of a custom signal to null\n * unsets the signal. The signals will be persisted locally on the client.\n *\n * @public\n */\nexport async function setCustomSignals(\n  remoteConfig: RemoteConfig,\n  customSignals: CustomSignals\n): Promise<void> {\n  const rc = getModularInstance(remoteConfig) as RemoteConfigImpl;\n  if (Object.keys(customSignals).length === 0) {\n    return;\n  }\n\n  // eslint-disable-next-line guard-for-in\n  for (const key in customSignals) {\n    if (key.length > RC_CUSTOM_SIGNAL_KEY_MAX_LENGTH) {\n      rc._logger.error(\n        `Custom signal key ${key} is too long, max allowed length is ${RC_CUSTOM_SIGNAL_KEY_MAX_LENGTH}.`\n      );\n      return;\n    }\n    const value = customSignals[key];\n    if (\n      typeof value === 'string' &&\n      value.length > RC_CUSTOM_SIGNAL_VALUE_MAX_LENGTH\n    ) {\n      rc._logger.error(\n        `Value supplied for custom signal ${key} is too long, max allowed length is ${RC_CUSTOM_SIGNAL_VALUE_MAX_LENGTH}.`\n      );\n      return;\n    }\n  }\n\n  try {\n    await rc._storageCache.setCustomSignals(customSignals);\n  } catch (error) {\n    rc._logger.error(\n      `Error encountered while setting custom signals: ${error}`\n    );\n  }\n}\n\n// TODO: Add public document for the Remote Config Realtime API guide on the Web Platform.\n/**\n * Starts listening for real-time config updates from the Remote Config backend and automatically\n * fetches updates from the Remote Config backend when they are available.\n *\n * @remarks\n * If a connection to the Remote Config backend is not already open, calling this method will\n * open it. Multiple listeners can be added by calling this method again, but subsequent calls\n * re-use the same connection to the backend.\n *\n * @param remoteConfig - The {@link RemoteConfig} instance.\n * @param observer - The {@link ConfigUpdateObserver} to be notified of config updates.\n * @returns An {@link Unsubscribe} function to remove the listener.\n *\n * @public\n */\nexport function onConfigUpdate(\n  remoteConfig: RemoteConfig,\n  observer: ConfigUpdateObserver\n): Unsubscribe {\n  const rc = getModularInstance(remoteConfig) as RemoteConfigImpl;\n  rc._realtimeHandler.addObserver(observer);\n  return () => {\n    rc._realtimeHandler.removeObserver(observer);\n  };\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { StorageCache } from '../storage/storage_cache';\nimport { FetchResponse } from '../public_types';\nimport {\n  RemoteConfigFetchClient,\n  FetchRequest\n} from './remote_config_fetch_client';\nimport { Storage } from '../storage/storage';\nimport { Logger } from '@firebase/logger';\n\n/**\n * Implements the {@link RemoteConfigClient} abstraction with success response caching.\n *\n * <p>Comparable to the browser's Cache API for responses, but the Cache API requires a Service\n * Worker, which requires HTTPS, which would significantly complicate SDK installation. Also, the\n * Cache API doesn't support matching entries by time.\n */\nexport class CachingClient implements RemoteConfigFetchClient {\n  constructor(\n    private readonly client: RemoteConfigFetchClient,\n    private readonly storage: Storage,\n    private readonly storageCache: StorageCache,\n    private readonly logger: Logger\n  ) {}\n\n  /**\n   * Returns true if the age of the cached fetched configs is less than or equal to\n   * {@link Settings#minimumFetchIntervalInSeconds}.\n   *\n   * <p>This is comparable to passing `headers = { 'Cache-Control': max-age <maxAge> }` to the\n   * native Fetch API.\n   *\n   * <p>Visible for testing.\n   */\n  isCachedDataFresh(\n    cacheMaxAgeMillis: number,\n    lastSuccessfulFetchTimestampMillis: number | undefined\n  ): boolean {\n    // Cache can only be fresh if it's populated.\n    if (!lastSuccessfulFetchTimestampMillis) {\n      this.logger.debug('Config fetch cache check. Cache unpopulated.');\n      return false;\n    }\n\n    // Calculates age of cache entry.\n    const cacheAgeMillis = Date.now() - lastSuccessfulFetchTimestampMillis;\n\n    const isCachedDataFresh = cacheAgeMillis <= cacheMaxAgeMillis;\n\n    this.logger.debug(\n      'Config fetch cache check.' +\n        ` Cache age millis: ${cacheAgeMillis}.` +\n        ` Cache max age millis (minimumFetchIntervalMillis setting): ${cacheMaxAgeMillis}.` +\n        ` Is cache hit: ${isCachedDataFresh}.`\n    );\n\n    return isCachedDataFresh;\n  }\n\n  async fetch(request: FetchRequest): Promise<FetchResponse> {\n    // Reads from persisted storage to avoid cache miss if callers don't wait on initialization.\n    const [lastSuccessfulFetchTimestampMillis, lastSuccessfulFetchResponse] =\n      await Promise.all([\n        this.storage.getLastSuccessfulFetchTimestampMillis(),\n        this.storage.getLastSuccessfulFetchResponse()\n      ]);\n\n    // Exits early on cache hit.\n    if (\n      lastSuccessfulFetchResponse &&\n      this.isCachedDataFresh(\n        request.cacheMaxAgeMillis,\n        lastSuccessfulFetchTimestampMillis\n      )\n    ) {\n      return lastSuccessfulFetchResponse;\n    }\n\n    // Deviates from pure decorator by not honoring a passed ETag since we don't have a public API\n    // that allows the caller to pass an ETag.\n    request.eTag =\n      lastSuccessfulFetchResponse && lastSuccessfulFetchResponse.eTag;\n\n    // Falls back to service on cache miss.\n    const response = await this.client.fetch(request);\n\n    // Fetch throws for non-success responses, so success is guaranteed here.\n\n    const storageOperations = [\n      // Uses write-through cache for consistency with synchronous public API.\n      this.storageCache.setLastSuccessfulFetchTimestampMillis(Date.now())\n    ];\n\n    if (response.status === 200) {\n      // Caches response only if it has changed, ie non-304 responses.\n      storageOperations.push(\n        this.storage.setLastSuccessfulFetchResponse(response)\n      );\n    }\n\n    await Promise.all(storageOperations);\n\n    return response;\n  }\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * Attempts to get the most accurate browser language setting.\n *\n * <p>Adapted from getUserLanguage in packages/auth/src/utils.js for TypeScript.\n *\n * <p>Defers default language specification to server logic for consistency.\n *\n * @param navigatorLanguage Enables tests to override read-only {@link NavigatorLanguage}.\n */\nexport function getUserLanguage(\n  navigatorLanguage: NavigatorLanguage = navigator\n): string {\n  return (\n    // Most reliable, but only supported in Chrome/Firefox.\n    (navigatorLanguage.languages && navigatorLanguage.languages[0]) ||\n    // Supported in most browsers, but returns the language of the browser\n    // UI, not the language set in browser settings.\n    navigatorLanguage.language\n    // Polyfill otherwise.\n  );\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n  CustomSignals,\n  FetchResponse,\n  FirebaseRemoteConfigObject\n} from '../public_types';\nimport {\n  RemoteConfigFetchClient,\n  FetchRequest\n} from './remote_config_fetch_client';\nimport { ERROR_FACTORY, ErrorCode } from '../errors';\nimport { getUserLanguage } from '../language';\nimport { _FirebaseInstallationsInternal } from '@firebase/installations';\n\n/**\n * Defines request body parameters required to call the fetch API:\n * https://firebase.google.com/docs/reference/remote-config/rest\n *\n * <p>Not exported because this file encapsulates REST API specifics.\n *\n * <p>Not passing User Properties because Analytics' source of truth on Web is server-side.\n */\ninterface FetchRequestBody {\n  // Disables camelcase linting for request body params.\n  /* eslint-disable camelcase*/\n  sdk_version: string;\n  app_instance_id: string;\n  app_instance_id_token: string;\n  app_id: string;\n  language_code: string;\n  custom_signals?: CustomSignals;\n  /* eslint-enable camelcase */\n}\n\n/**\n * Implements the Client abstraction for the Remote Config REST API.\n */\nexport class RestClient implements RemoteConfigFetchClient {\n  constructor(\n    private readonly firebaseInstallations: _FirebaseInstallationsInternal,\n    private readonly sdkVersion: string,\n    private readonly namespace: string,\n    private readonly projectId: string,\n    private readonly apiKey: string,\n    private readonly appId: string\n  ) {}\n\n  /**\n   * Fetches from the Remote Config REST API.\n   *\n   * @throws a {@link ErrorCode.FETCH_NETWORK} error if {@link GlobalFetch#fetch} can't\n   * connect to the network.\n   * @throws a {@link ErrorCode.FETCH_PARSE} error if {@link Response#json} can't parse the\n   * fetch response.\n   * @throws a {@link ErrorCode.FETCH_STATUS} error if the service returns an HTTP error status.\n   */\n  async fetch(request: FetchRequest): Promise<FetchResponse> {\n    const [installationId, installationToken] = await Promise.all([\n      this.firebaseInstallations.getId(),\n      this.firebaseInstallations.getToken()\n    ]);\n\n    const urlBase =\n      window.FIREBASE_REMOTE_CONFIG_URL_BASE ||\n      'https://firebaseremoteconfig.googleapis.com';\n\n    const url = `${urlBase}/v1/projects/${this.projectId}/namespaces/${this.namespace}:fetch?key=${this.apiKey}`;\n\n    const headers = {\n      'Content-Type': 'application/json',\n      'Content-Encoding': 'gzip',\n      // Deviates from pure decorator by not passing max-age header since we don't currently have\n      // service behavior using that header.\n      'If-None-Match': request.eTag || '*'\n      // TODO: Add this header once CORS error is fixed internally.\n      //'X-Firebase-RC-Fetch-Type': `${fetchType}/${fetchAttempt}`\n    };\n\n    const requestBody: FetchRequestBody = {\n      /* eslint-disable camelcase */\n      sdk_version: this.sdkVersion,\n      app_instance_id: installationId,\n      app_instance_id_token: installationToken,\n      app_id: this.appId,\n      language_code: getUserLanguage(),\n      custom_signals: request.customSignals\n      /* eslint-enable camelcase */\n    };\n\n    const options = {\n      method: 'POST',\n      headers,\n      body: JSON.stringify(requestBody)\n    };\n\n    // This logic isn't REST-specific, but shimming abort logic isn't worth another decorator.\n    const fetchPromise = fetch(url, options);\n    const timeoutPromise = new Promise((_resolve, reject) => {\n      // Maps async event listener to Promise API.\n      request.signal.addEventListener(() => {\n        // Emulates https://heycam.github.io/webidl/#aborterror\n        const error = new Error('The operation was aborted.');\n        error.name = 'AbortError';\n        reject(error);\n      });\n    });\n\n    let response;\n    try {\n      await Promise.race([fetchPromise, timeoutPromise]);\n      response = await fetchPromise;\n    } catch (originalError) {\n      let errorCode = ErrorCode.FETCH_NETWORK;\n      if ((originalError as Error)?.name === 'AbortError') {\n        errorCode = ErrorCode.FETCH_TIMEOUT;\n      }\n      throw ERROR_FACTORY.create(errorCode, {\n        originalErrorMessage: (originalError as Error)?.message\n      });\n    }\n\n    let status = response.status;\n\n    // Normalizes nullable header to optional.\n    const responseEtag = response.headers.get('ETag') || undefined;\n\n    let config: FirebaseRemoteConfigObject | undefined;\n    let state: string | undefined;\n    let templateVersion: number | undefined;\n\n    // JSON parsing throws SyntaxError if the response body isn't a JSON string.\n    // Requesting application/json and checking for a 200 ensures there's JSON data.\n    if (response.status === 200) {\n      let responseBody;\n      try {\n        responseBody = await response.json();\n      } catch (originalError) {\n        throw ERROR_FACTORY.create(ErrorCode.FETCH_PARSE, {\n          originalErrorMessage: (originalError as Error)?.message\n        });\n      }\n      config = responseBody['entries'];\n      state = responseBody['state'];\n      templateVersion = responseBody['templateVersion'];\n    }\n\n    // Normalizes based on legacy state.\n    if (state === 'INSTANCE_STATE_UNSPECIFIED') {\n      status = 500;\n    } else if (state === 'NO_CHANGE') {\n      status = 304;\n    } else if (state === 'NO_TEMPLATE' || state === 'EMPTY_CONFIG') {\n      // These cases can be fixed remotely, so normalize to safe value.\n      config = {};\n    }\n\n    // Normalize to exception-based control flow for non-success cases.\n    // Encapsulates HTTP specifics in this class as much as possible. Status is still the best for\n    // differentiating success states (200 from 304; the state body param is undefined in a\n    // standard 304).\n    if (status !== 304 && status !== 200) {\n      throw ERROR_FACTORY.create(ErrorCode.FETCH_STATUS, {\n        httpStatus: status\n      });\n    }\n\n    return { status, eTag: responseEtag, config, templateVersion };\n  }\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FetchResponse } from '../public_types';\nimport {\n  RemoteConfigAbortSignal,\n  RemoteConfigFetchClient,\n  FetchRequest\n} from './remote_config_fetch_client';\nimport { ThrottleMetadata, Storage } from '../storage/storage';\nimport { ErrorCode, ERROR_FACTORY } from '../errors';\nimport { FirebaseError, calculateBackoffMillis } from '@firebase/util';\n\n/**\n * Supports waiting on a backoff by:\n *\n * <ul>\n *   <li>Promisifying setTimeout, so we can set a timeout in our Promise chain</li>\n *   <li>Listening on a signal bus for abort events, just like the Fetch API</li>\n *   <li>Failing in the same way the Fetch API fails, so timing out a live request and a throttled\n *       request appear the same.</li>\n * </ul>\n *\n * <p>Visible for testing.\n */\nexport function setAbortableTimeout(\n  signal: RemoteConfigAbortSignal,\n  throttleEndTimeMillis: number\n): Promise<void> {\n  return new Promise((resolve, reject) => {\n    // Derives backoff from given end time, normalizing negative numbers to zero.\n    const backoffMillis = Math.max(throttleEndTimeMillis - Date.now(), 0);\n\n    const timeout = setTimeout(resolve, backoffMillis);\n\n    // Adds listener, rather than sets onabort, because signal is a shared object.\n    signal.addEventListener(() => {\n      clearTimeout(timeout);\n\n      // If the request completes before this timeout, the rejection has no effect.\n      reject(\n        ERROR_FACTORY.create(ErrorCode.FETCH_THROTTLE, {\n          throttleEndTimeMillis\n        })\n      );\n    });\n  });\n}\n\ntype RetriableError = FirebaseError & { customData: { httpStatus: string } };\n/**\n * Returns true if the {@link Error} indicates a fetch request may succeed later.\n */\nfunction isRetriableError(e: Error): e is RetriableError {\n  if (!(e instanceof FirebaseError) || !e.customData) {\n    return false;\n  }\n\n  // Uses string index defined by ErrorData, which FirebaseError implements.\n  const httpStatus = Number(e.customData['httpStatus']);\n\n  return (\n    httpStatus === 429 ||\n    httpStatus === 500 ||\n    httpStatus === 503 ||\n    httpStatus === 504\n  );\n}\n\n/**\n * Decorates a Client with retry logic.\n *\n * <p>Comparable to CachingClient, but uses backoff logic instead of cache max age and doesn't cache\n * responses (because the SDK has no use for error responses).\n */\nexport class RetryingClient implements RemoteConfigFetchClient {\n  constructor(\n    private readonly client: RemoteConfigFetchClient,\n    private readonly storage: Storage\n  ) {}\n\n  async fetch(request: FetchRequest): Promise<FetchResponse> {\n    const throttleMetadata = (await this.storage.getThrottleMetadata()) || {\n      backoffCount: 0,\n      throttleEndTimeMillis: Date.now()\n    };\n\n    return this.attemptFetch(request, throttleMetadata);\n  }\n\n  /**\n   * A recursive helper for attempting a fetch request repeatedly.\n   *\n   * @throws any non-retriable errors.\n   */\n  async attemptFetch(\n    request: FetchRequest,\n    { throttleEndTimeMillis, backoffCount }: ThrottleMetadata\n  ): Promise<FetchResponse> {\n    // Starts with a (potentially zero) timeout to support resumption from stored state.\n    // Ensures the throttle end time is honored if the last attempt timed out.\n    // Note the SDK will never make a request if the fetch timeout expires at this point.\n    await setAbortableTimeout(request.signal, throttleEndTimeMillis);\n\n    try {\n      const response = await this.client.fetch(request);\n\n      // Note the SDK only clears throttle state if response is success or non-retriable.\n      await this.storage.deleteThrottleMetadata();\n\n      return response;\n    } catch (e) {\n      if (!isRetriableError(e as Error)) {\n        throw e;\n      }\n\n      // Increments backoff state.\n      const throttleMetadata = {\n        throttleEndTimeMillis:\n          Date.now() + calculateBackoffMillis(backoffCount),\n        backoffCount: backoffCount + 1\n      };\n\n      // Persists state.\n      await this.storage.setThrottleMetadata(throttleMetadata);\n\n      return this.attemptFetch(request, throttleMetadata);\n    }\n  }\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseApp } from '@firebase/app';\nimport {\n  RemoteConfig as RemoteConfigType,\n  FetchStatus,\n  RemoteConfigSettings\n} from './public_types';\nimport { StorageCache } from './storage/storage_cache';\nimport { RemoteConfigFetchClient } from './client/remote_config_fetch_client';\nimport { Storage } from './storage/storage';\nimport { Logger } from '@firebase/logger';\nimport { RealtimeHandler } from './client/realtime_handler';\n\nconst DEFAULT_FETCH_TIMEOUT_MILLIS = 60 * 1000; // One minute\nconst DEFAULT_CACHE_MAX_AGE_MILLIS = 12 * 60 * 60 * 1000; // Twelve hours.\n\n/**\n * Encapsulates business logic mapping network and storage dependencies to the public SDK API.\n *\n * See {@link https://github.com/firebase/firebase-js-sdk/blob/main/packages/firebase/compat/index.d.ts|interface documentation} for method descriptions.\n */\nexport class RemoteConfig implements RemoteConfigType {\n  /**\n   * Tracks completion of initialization promise.\n   * @internal\n   */\n  _isInitializationComplete = false;\n\n  /**\n   * De-duplicates initialization calls.\n   * @internal\n   */\n  _initializePromise?: Promise<void>;\n\n  settings: RemoteConfigSettings = {\n    fetchTimeoutMillis: DEFAULT_FETCH_TIMEOUT_MILLIS,\n    minimumFetchIntervalMillis: DEFAULT_CACHE_MAX_AGE_MILLIS\n  };\n\n  defaultConfig: { [key: string]: string | number | boolean } = {};\n\n  get fetchTimeMillis(): number {\n    return this._storageCache.getLastSuccessfulFetchTimestampMillis() || -1;\n  }\n\n  get lastFetchStatus(): FetchStatus {\n    return this._storageCache.getLastFetchStatus() || 'no-fetch-yet';\n  }\n\n  constructor(\n    // Required by FirebaseServiceFactory interface.\n    readonly app: FirebaseApp,\n    // JS doesn't support private yet\n    // (https://github.com/tc39/proposal-class-fields#private-fields), so we hint using an\n    // underscore prefix.\n    /**\n     * @internal\n     */\n    readonly _client: RemoteConfigFetchClient,\n    /**\n     * @internal\n     */\n    readonly _storageCache: StorageCache,\n    /**\n     * @internal\n     */\n    readonly _storage: Storage,\n    /**\n     * @internal\n     */\n    readonly _logger: Logger,\n    /**\n     * @internal\n     */\n    readonly _realtimeHandler: RealtimeHandler\n  ) {}\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FetchStatus, CustomSignals } from '@firebase/remote-config-types';\nimport { FetchResponse, FirebaseRemoteConfigObject } from '../public_types';\nimport { ERROR_FACTORY, ErrorCode } from '../errors';\nimport { RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS } from '../constants';\nimport { FirebaseError } from '@firebase/util';\n\n/**\n * Converts an error event associated with a {@link IDBRequest} to a {@link FirebaseError}.\n */\nfunction toFirebaseError(event: Event, errorCode: ErrorCode): FirebaseError {\n  const originalError = (event.target as IDBRequest).error || undefined;\n  return ERROR_FACTORY.create(errorCode, {\n    originalErrorMessage: originalError && (originalError as Error)?.message\n  });\n}\n\n/**\n * A general-purpose store keyed by app + namespace + {@link\n * ProjectNamespaceKeyFieldValue}.\n *\n * <p>The Remote Config SDK can be used with multiple app installations, and each app can interact\n * with multiple namespaces, so this store uses app (ID + name) and namespace as common parent keys\n * for a set of key-value pairs. See {@link Storage#createCompositeKey}.\n *\n * <p>Visible for testing.\n */\nexport const APP_NAMESPACE_STORE = 'app_namespace_store';\n\nconst DB_NAME = 'firebase_remote_config';\nconst DB_VERSION = 1;\n\n/**\n * Encapsulates metadata concerning throttled fetch requests.\n */\nexport interface ThrottleMetadata {\n  // The number of times fetch has backed off. Used for resuming backoff after a timeout.\n  backoffCount: number;\n  // The Unix timestamp in milliseconds when callers can retry a request.\n  throttleEndTimeMillis: number;\n}\n\nexport interface RealtimeBackoffMetadata {\n  // The number of consecutive connection streams that have failed.\n  numFailedStreams: number;\n  // The Date until which the client should wait before attempting any new real-time connections.\n  backoffEndTimeMillis: Date;\n}\n\n/**\n * Provides type-safety for the \"key\" field used by {@link APP_NAMESPACE_STORE}.\n *\n * <p>This seems like a small price to avoid potentially subtle bugs caused by a typo.\n */\ntype ProjectNamespaceKeyFieldValue =\n  | 'active_config'\n  | 'active_config_etag'\n  | 'last_fetch_status'\n  | 'last_successful_fetch_timestamp_millis'\n  | 'last_successful_fetch_response'\n  | 'settings'\n  | 'throttle_metadata'\n  | 'custom_signals'\n  | 'realtime_backoff_metadata'\n  | 'last_known_template_version';\n\n// Visible for testing.\nexport function openDatabase(): Promise<IDBDatabase> {\n  return new Promise((resolve, reject) => {\n    try {\n      const request = indexedDB.open(DB_NAME, DB_VERSION);\n      request.onerror = event => {\n        reject(toFirebaseError(event, ErrorCode.STORAGE_OPEN));\n      };\n      request.onsuccess = event => {\n        resolve((event.target as IDBOpenDBRequest).result);\n      };\n      request.onupgradeneeded = event => {\n        const db = (event.target as IDBOpenDBRequest).result;\n\n        // We don't use 'break' in this switch statement, the fall-through\n        // behavior is what we want, because if there are multiple versions between\n        // the old version and the current version, we want ALL the migrations\n        // that correspond to those versions to run, not only the last one.\n        // eslint-disable-next-line default-case\n        switch (event.oldVersion) {\n          case 0:\n            db.createObjectStore(APP_NAMESPACE_STORE, {\n              keyPath: 'compositeKey'\n            });\n        }\n      };\n    } catch (error) {\n      reject(\n        ERROR_FACTORY.create(ErrorCode.STORAGE_OPEN, {\n          originalErrorMessage: (error as Error)?.message\n        })\n      );\n    }\n  });\n}\n\n/**\n * Abstracts data persistence.\n */\nexport abstract class Storage {\n  getLastFetchStatus(): Promise<FetchStatus | undefined> {\n    return this.get<FetchStatus>('last_fetch_status');\n  }\n\n  setLastFetchStatus(status: FetchStatus): Promise<void> {\n    return this.set<FetchStatus>('last_fetch_status', status);\n  }\n\n  // This is comparable to a cache entry timestamp. If we need to expire other data, we could\n  // consider adding timestamp to all storage records and an optional max age arg to getters.\n  getLastSuccessfulFetchTimestampMillis(): Promise<number | undefined> {\n    return this.get<number>('last_successful_fetch_timestamp_millis');\n  }\n\n  setLastSuccessfulFetchTimestampMillis(timestamp: number): Promise<void> {\n    return this.set<number>(\n      'last_successful_fetch_timestamp_millis',\n      timestamp\n    );\n  }\n\n  getLastSuccessfulFetchResponse(): Promise<FetchResponse | undefined> {\n    return this.get<FetchResponse>('last_successful_fetch_response');\n  }\n\n  setLastSuccessfulFetchResponse(response: FetchResponse): Promise<void> {\n    return this.set<FetchResponse>('last_successful_fetch_response', response);\n  }\n\n  getActiveConfig(): Promise<FirebaseRemoteConfigObject | undefined> {\n    return this.get<FirebaseRemoteConfigObject>('active_config');\n  }\n\n  setActiveConfig(config: FirebaseRemoteConfigObject): Promise<void> {\n    return this.set<FirebaseRemoteConfigObject>('active_config', config);\n  }\n\n  getActiveConfigEtag(): Promise<string | undefined> {\n    return this.get<string>('active_config_etag');\n  }\n\n  setActiveConfigEtag(etag: string): Promise<void> {\n    return this.set<string>('active_config_etag', etag);\n  }\n\n  getThrottleMetadata(): Promise<ThrottleMetadata | undefined> {\n    return this.get<ThrottleMetadata>('throttle_metadata');\n  }\n\n  setThrottleMetadata(metadata: ThrottleMetadata): Promise<void> {\n    return this.set<ThrottleMetadata>('throttle_metadata', metadata);\n  }\n\n  deleteThrottleMetadata(): Promise<void> {\n    return this.delete('throttle_metadata');\n  }\n\n  getCustomSignals(): Promise<CustomSignals | undefined> {\n    return this.get<CustomSignals>('custom_signals');\n  }\n\n  abstract setCustomSignals(\n    customSignals: CustomSignals\n  ): Promise<CustomSignals>;\n  abstract get<T>(key: ProjectNamespaceKeyFieldValue): Promise<T | undefined>;\n  abstract set<T>(key: ProjectNamespaceKeyFieldValue, value: T): Promise<void>;\n  abstract delete(key: ProjectNamespaceKeyFieldValue): Promise<void>;\n\n  getRealtimeBackoffMetadata(): Promise<RealtimeBackoffMetadata | undefined> {\n    return this.get<RealtimeBackoffMetadata>('realtime_backoff_metadata');\n  }\n\n  setRealtimeBackoffMetadata(\n    realtimeMetadata: RealtimeBackoffMetadata\n  ): Promise<void> {\n    return this.set<RealtimeBackoffMetadata>(\n      'realtime_backoff_metadata',\n      realtimeMetadata\n    );\n  }\n\n  getActiveConfigTemplateVersion(): Promise<number | undefined> {\n    return this.get<number>('last_known_template_version');\n  }\n\n  setActiveConfigTemplateVersion(version: number): Promise<void> {\n    return this.set<number>('last_known_template_version', version);\n  }\n}\n\nexport class IndexedDbStorage extends Storage {\n  /**\n   * @param appId enables storage segmentation by app (ID + name).\n   * @param appName enables storage segmentation by app (ID + name).\n   * @param namespace enables storage segmentation by namespace.\n   */\n  constructor(\n    private readonly appId: string,\n    private readonly appName: string,\n    private readonly namespace: string,\n    private readonly openDbPromise = openDatabase()\n  ) {\n    super();\n  }\n\n  async setCustomSignals(customSignals: CustomSignals): Promise<CustomSignals> {\n    const db = await this.openDbPromise;\n    const transaction = db.transaction([APP_NAMESPACE_STORE], 'readwrite');\n    const storedSignals = await this.getWithTransaction<CustomSignals>(\n      'custom_signals',\n      transaction\n    );\n    const updatedSignals = mergeCustomSignals(\n      customSignals,\n      storedSignals || {}\n    );\n    await this.setWithTransaction<CustomSignals>(\n      'custom_signals',\n      updatedSignals,\n      transaction\n    );\n    return updatedSignals;\n  }\n\n  /**\n   * Gets a value from the database using the provided transaction.\n   *\n   * @param key The key of the value to get.\n   * @param transaction The transaction to use for the operation.\n   * @returns The value associated with the key, or undefined if no such value exists.\n   */\n  async getWithTransaction<T>(\n    key: ProjectNamespaceKeyFieldValue,\n    transaction: IDBTransaction\n  ): Promise<T | undefined> {\n    return new Promise((resolve, reject) => {\n      const objectStore = transaction.objectStore(APP_NAMESPACE_STORE);\n      const compositeKey = this.createCompositeKey(key);\n      try {\n        const request = objectStore.get(compositeKey);\n        request.onerror = event => {\n          reject(toFirebaseError(event, ErrorCode.STORAGE_GET));\n        };\n        request.onsuccess = event => {\n          const result = (event.target as IDBRequest).result;\n          if (result) {\n            resolve(result.value);\n          } else {\n            resolve(undefined);\n          }\n        };\n      } catch (e) {\n        reject(\n          ERROR_FACTORY.create(ErrorCode.STORAGE_GET, {\n            originalErrorMessage: (e as Error)?.message\n          })\n        );\n      }\n    });\n  }\n\n  /**\n   * Sets a value in the database using the provided transaction.\n   *\n   * @param key The key of the value to set.\n   * @param value The value to set.\n   * @param transaction The transaction to use for the operation.\n   * @returns A promise that resolves when the operation is complete.\n   */\n  async setWithTransaction<T>(\n    key: ProjectNamespaceKeyFieldValue,\n    value: T,\n    transaction: IDBTransaction\n  ): Promise<void> {\n    return new Promise((resolve, reject) => {\n      const objectStore = transaction.objectStore(APP_NAMESPACE_STORE);\n      const compositeKey = this.createCompositeKey(key);\n      try {\n        const request = objectStore.put({\n          compositeKey,\n          value\n        });\n        request.onerror = (event: Event) => {\n          reject(toFirebaseError(event, ErrorCode.STORAGE_SET));\n        };\n        request.onsuccess = () => {\n          resolve();\n        };\n      } catch (e) {\n        reject(\n          ERROR_FACTORY.create(ErrorCode.STORAGE_SET, {\n            originalErrorMessage: (e as Error)?.message\n          })\n        );\n      }\n    });\n  }\n\n  async get<T>(key: ProjectNamespaceKeyFieldValue): Promise<T | undefined> {\n    const db = await this.openDbPromise;\n    const transaction = db.transaction([APP_NAMESPACE_STORE], 'readonly');\n    return this.getWithTransaction<T>(key, transaction);\n  }\n\n  async set<T>(key: ProjectNamespaceKeyFieldValue, value: T): Promise<void> {\n    const db = await this.openDbPromise;\n    const transaction = db.transaction([APP_NAMESPACE_STORE], 'readwrite');\n    return this.setWithTransaction<T>(key, value, transaction);\n  }\n\n  async delete(key: ProjectNamespaceKeyFieldValue): Promise<void> {\n    const db = await this.openDbPromise;\n    return new Promise((resolve, reject) => {\n      const transaction = db.transaction([APP_NAMESPACE_STORE], 'readwrite');\n      const objectStore = transaction.objectStore(APP_NAMESPACE_STORE);\n      const compositeKey = this.createCompositeKey(key);\n      try {\n        const request = objectStore.delete(compositeKey);\n        request.onerror = (event: Event) => {\n          reject(toFirebaseError(event, ErrorCode.STORAGE_DELETE));\n        };\n        request.onsuccess = () => {\n          resolve();\n        };\n      } catch (e) {\n        reject(\n          ERROR_FACTORY.create(ErrorCode.STORAGE_DELETE, {\n            originalErrorMessage: (e as Error)?.message\n          })\n        );\n      }\n    });\n  }\n\n  // Facilitates composite key functionality (which is unsupported in IE).\n  createCompositeKey(key: ProjectNamespaceKeyFieldValue): string {\n    return [this.appId, this.appName, this.namespace, key].join();\n  }\n}\n\nexport class InMemoryStorage extends Storage {\n  private storage: { [key: string]: unknown } = {};\n\n  async get<T>(key: ProjectNamespaceKeyFieldValue): Promise<T> {\n    return Promise.resolve(this.storage[key] as T);\n  }\n\n  async set<T>(key: ProjectNamespaceKeyFieldValue, value: T): Promise<void> {\n    this.storage[key] = value;\n    return Promise.resolve(undefined);\n  }\n\n  async delete(key: ProjectNamespaceKeyFieldValue): Promise<void> {\n    this.storage[key] = undefined;\n    return Promise.resolve();\n  }\n\n  async setCustomSignals(customSignals: CustomSignals): Promise<CustomSignals> {\n    const storedSignals = (this.storage['custom_signals'] ||\n      {}) as CustomSignals;\n    this.storage['custom_signals'] = mergeCustomSignals(\n      customSignals,\n      storedSignals\n    );\n    return Promise.resolve(this.storage['custom_signals'] as CustomSignals);\n  }\n}\n\nfunction mergeCustomSignals(\n  customSignals: CustomSignals,\n  storedSignals: CustomSignals\n): CustomSignals {\n  const combinedSignals = {\n    ...storedSignals,\n    ...customSignals\n  };\n\n  // Filter out key-value assignments with null values since they are signals being unset\n  const updatedSignals = Object.fromEntries(\n    Object.entries(combinedSignals)\n      .filter(([_, v]) => v !== null)\n      .map(([k, v]) => {\n        // Stringify numbers to store a map of string keys and values which can be sent\n        // as-is in a fetch call.\n        if (typeof v === 'number') {\n          return [k, v.toString()];\n        }\n        return [k, v];\n      })\n  );\n\n  // Throw an error if the number of custom signals to be stored exceeds the limit\n  if (\n    Object.keys(updatedSignals).length > RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS\n  ) {\n    throw ERROR_FACTORY.create(ErrorCode.CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS, {\n      maxSignals: RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS\n    });\n  }\n  return updatedSignals;\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FetchStatus, CustomSignals } from '@firebase/remote-config-types';\nimport { FirebaseRemoteConfigObject } from '../public_types';\nimport { Storage } from './storage';\n\n/**\n * A memory cache layer over storage to support the SDK's synchronous read requirements.\n */\nexport class StorageCache {\n  constructor(private readonly storage: Storage) {}\n\n  /**\n   * Memory caches.\n   */\n  private lastFetchStatus?: FetchStatus;\n  private lastSuccessfulFetchTimestampMillis?: number;\n  private activeConfig?: FirebaseRemoteConfigObject;\n  private customSignals?: CustomSignals;\n\n  /**\n   * Memory-only getters\n   */\n  getLastFetchStatus(): FetchStatus | undefined {\n    return this.lastFetchStatus;\n  }\n\n  getLastSuccessfulFetchTimestampMillis(): number | undefined {\n    return this.lastSuccessfulFetchTimestampMillis;\n  }\n\n  getActiveConfig(): FirebaseRemoteConfigObject | undefined {\n    return this.activeConfig;\n  }\n\n  getCustomSignals(): CustomSignals | undefined {\n    return this.customSignals;\n  }\n\n  /**\n   * Read-ahead getter\n   */\n  async loadFromStorage(): Promise<void> {\n    const lastFetchStatusPromise = this.storage.getLastFetchStatus();\n    const lastSuccessfulFetchTimestampMillisPromise =\n      this.storage.getLastSuccessfulFetchTimestampMillis();\n    const activeConfigPromise = this.storage.getActiveConfig();\n    const customSignalsPromise = this.storage.getCustomSignals();\n\n    // Note:\n    // 1. we consistently check for undefined to avoid clobbering defined values\n    //   in memory\n    // 2. we defer awaiting to improve readability, as opposed to destructuring\n    //   a Promise.all result, for example\n\n    const lastFetchStatus = await lastFetchStatusPromise;\n    if (lastFetchStatus) {\n      this.lastFetchStatus = lastFetchStatus;\n    }\n\n    const lastSuccessfulFetchTimestampMillis =\n      await lastSuccessfulFetchTimestampMillisPromise;\n    if (lastSuccessfulFetchTimestampMillis) {\n      this.lastSuccessfulFetchTimestampMillis =\n        lastSuccessfulFetchTimestampMillis;\n    }\n\n    const activeConfig = await activeConfigPromise;\n    if (activeConfig) {\n      this.activeConfig = activeConfig;\n    }\n\n    const customSignals = await customSignalsPromise;\n    if (customSignals) {\n      this.customSignals = customSignals;\n    }\n  }\n\n  /**\n   * Write-through setters\n   */\n  setLastFetchStatus(status: FetchStatus): Promise<void> {\n    this.lastFetchStatus = status;\n    return this.storage.setLastFetchStatus(status);\n  }\n\n  setLastSuccessfulFetchTimestampMillis(\n    timestampMillis: number\n  ): Promise<void> {\n    this.lastSuccessfulFetchTimestampMillis = timestampMillis;\n    return this.storage.setLastSuccessfulFetchTimestampMillis(timestampMillis);\n  }\n\n  setActiveConfig(activeConfig: FirebaseRemoteConfigObject): Promise<void> {\n    this.activeConfig = activeConfig;\n    return this.storage.setActiveConfig(activeConfig);\n  }\n\n  async setCustomSignals(customSignals: CustomSignals): Promise<void> {\n    this.customSignals = await this.storage.setCustomSignals(customSignals);\n  }\n}\n","/**\n * @license\n * Copyright 2025 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { assert } from '@firebase/util';\n\n// 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.\n/**\n * Base class to be used if you want to emit events. Call the constructor with\n * the set of allowed event names.\n */\nexport abstract class EventEmitter {\n  private listeners_: {\n    [eventType: string]: Array<{\n      callback(...args: unknown[]): void;\n      context: unknown;\n    }>;\n  } = {};\n\n  constructor(private allowedEvents_: string[]) {\n    assert(\n      Array.isArray(allowedEvents_) && allowedEvents_.length > 0,\n      'Requires a non-empty array'\n    );\n  }\n\n  /**\n   * To be overridden by derived classes in order to fire an initial event when\n   * somebody subscribes for data.\n   *\n   * @returns {Array.<*>} Array of parameters to trigger initial event with.\n   */\n  abstract getInitialEvent(eventType: string): unknown[];\n\n  /**\n   * To be called by derived classes to trigger events.\n   */\n  protected trigger(eventType: string, ...varArgs: unknown[]): void {\n    if (Array.isArray(this.listeners_[eventType])) {\n      // Clone the list, since callbacks could add/remove listeners.\n      const listeners = [...this.listeners_[eventType]];\n\n      for (let i = 0; i < listeners.length; i++) {\n        listeners[i].callback.apply(listeners[i].context, varArgs);\n      }\n    }\n  }\n\n  on(\n    eventType: string,\n    callback: (a: unknown) => void,\n    context: unknown\n  ): void {\n    this.validateEventType_(eventType);\n    this.listeners_[eventType] = this.listeners_[eventType] || [];\n    this.listeners_[eventType].push({ callback, context });\n\n    const eventData = this.getInitialEvent(eventType);\n    if (eventData) {\n      //@ts-ignore\n      callback.apply(context, eventData);\n    }\n  }\n\n  off(\n    eventType: string,\n    callback: (a: unknown) => void,\n    context: unknown\n  ): void {\n    this.validateEventType_(eventType);\n    const listeners = this.listeners_[eventType] || [];\n    for (let i = 0; i < listeners.length; i++) {\n      if (\n        listeners[i].callback === callback &&\n        (!context || context === listeners[i].context)\n      ) {\n        listeners.splice(i, 1);\n        return;\n      }\n    }\n  }\n\n  private validateEventType_(eventType: string): void {\n    assert(\n      this.allowedEvents_.find(et => {\n        return et === eventType;\n      }),\n      'Unknown event: ' + eventType\n    );\n  }\n}\n","/**\n * @license\n * Copyright 2025 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { assert } from '@firebase/util';\n\nimport { EventEmitter } from './eventEmitter';\n\ndeclare const document: Document;\n\n// 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.\nexport class VisibilityMonitor extends EventEmitter {\n  private visible_: boolean;\n\n  static getInstance(): VisibilityMonitor {\n    return new VisibilityMonitor();\n  }\n\n  constructor() {\n    super(['visible']);\n    let hidden: string;\n    let visibilityChange: string;\n    if (\n      typeof document !== 'undefined' &&\n      typeof document.addEventListener !== 'undefined'\n    ) {\n      if (typeof document['hidden'] !== 'undefined') {\n        // Opera 12.10 and Firefox 18 and later support\n        visibilityChange = 'visibilitychange';\n        hidden = 'hidden';\n      } // @ts-ignore\n      else if (typeof document['mozHidden'] !== 'undefined') {\n        visibilityChange = 'mozvisibilitychange';\n        hidden = 'mozHidden';\n      } // @ts-ignore\n      else if (typeof document['msHidden'] !== 'undefined') {\n        visibilityChange = 'msvisibilitychange';\n        hidden = 'msHidden';\n      } // @ts-ignore\n      else if (typeof document['webkitHidden'] !== 'undefined') {\n        visibilityChange = 'webkitvisibilitychange';\n        hidden = 'webkitHidden';\n      }\n    }\n\n    // Initially, we always assume we are visible. This ensures that in browsers\n    // without page visibility support or in cases where we are never visible\n    // (e.g. chrome extension), we act as if we are visible, i.e. don't delay\n    // reconnects\n    this.visible_ = true;\n\n    // @ts-ignore\n    if (visibilityChange) {\n      document.addEventListener(\n        visibilityChange,\n        () => {\n          // @ts-ignore\n          const visible = !document[hidden];\n          if (visible !== this.visible_) {\n            this.visible_ = visible;\n            this.trigger('visible', visible);\n          }\n        },\n        false\n      );\n    }\n  }\n\n  getInitialEvent(eventType: string): boolean[] {\n    assert(eventType === 'visible', 'Unknown event type: ' + eventType);\n    return [this.visible_];\n  }\n}\n","/**\n * @license\n * Copyright 2025 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { _FirebaseInstallationsInternal } from '@firebase/installations';\nimport { Logger } from '@firebase/logger';\nimport {\n  ConfigUpdate,\n  ConfigUpdateObserver,\n  FetchResponse,\n  FirebaseRemoteConfigObject\n} from '../public_types';\nimport { calculateBackoffMillis, FirebaseError } from '@firebase/util';\nimport { ERROR_FACTORY, ErrorCode } from '../errors';\nimport { Storage } from '../storage/storage';\nimport { VisibilityMonitor } from './visibility_monitor';\nimport { StorageCache } from '../storage/storage_cache';\nimport {\n  FetchRequest,\n  RemoteConfigAbortSignal\n} from './remote_config_fetch_client';\nimport { CachingClient } from './caching_client';\n\nconst API_KEY_HEADER = 'X-Goog-Api-Key';\nconst INSTALLATIONS_AUTH_TOKEN_HEADER = 'X-Goog-Firebase-Installations-Auth';\nconst ORIGINAL_RETRIES = 8;\nconst MAXIMUM_FETCH_ATTEMPTS = 3;\nconst NO_BACKOFF_TIME_IN_MILLIS = -1;\nconst NO_FAILED_REALTIME_STREAMS = 0;\nconst REALTIME_DISABLED_KEY = 'featureDisabled';\nconst REALTIME_RETRY_INTERVAL = 'retryIntervalSeconds';\nconst TEMPLATE_VERSION_KEY = 'latestTemplateVersionNumber';\n\nexport class RealtimeHandler {\n  constructor(\n    private readonly firebaseInstallations: _FirebaseInstallationsInternal,\n    private readonly storage: Storage,\n    private readonly sdkVersion: string,\n    private readonly namespace: string,\n    private readonly projectId: string,\n    private readonly apiKey: string,\n    private readonly appId: string,\n    private readonly logger: Logger,\n    private readonly storageCache: StorageCache,\n    private readonly cachingClient: CachingClient\n  ) {\n    void this.setRetriesRemaining();\n    void VisibilityMonitor.getInstance().on(\n      'visible',\n      this.onVisibilityChange,\n      this\n    );\n  }\n\n  private observers: Set<ConfigUpdateObserver> =\n    new Set<ConfigUpdateObserver>();\n  private isConnectionActive: boolean = false;\n  private isRealtimeDisabled: boolean = false;\n  private controller?: AbortController;\n  private reader: ReadableStreamDefaultReader<Uint8Array> | undefined;\n  private httpRetriesRemaining: number = ORIGINAL_RETRIES;\n  private isInBackground: boolean = false;\n  private readonly decoder = new TextDecoder('utf-8');\n  private isClosingConnection: boolean = false;\n\n  private async setRetriesRemaining(): Promise<void> {\n    // Retrieve number of remaining retries from last session. The minimum retry count being one.\n    const metadata = await this.storage.getRealtimeBackoffMetadata();\n    const numFailedStreams = metadata?.numFailedStreams || 0;\n    this.httpRetriesRemaining = Math.max(\n      ORIGINAL_RETRIES - numFailedStreams,\n      1\n    );\n  }\n\n  private propagateError = (e: FirebaseError): void =>\n    this.observers.forEach(o => o.error?.(e));\n\n  /**\n   * Increment the number of failed stream attempts, increase the backoff duration, set the backoff\n   * end time to \"backoff duration\" after `lastFailedStreamTime` and persist the new\n   * values to storage metadata.\n   */\n  private async updateBackoffMetadataWithLastFailedStreamConnectionTime(\n    lastFailedStreamTime: Date\n  ): Promise<void> {\n    const numFailedStreams =\n      ((await this.storage.getRealtimeBackoffMetadata())?.numFailedStreams ||\n        0) + 1;\n    const backoffMillis = calculateBackoffMillis(numFailedStreams, 60000, 2);\n    await this.storage.setRealtimeBackoffMetadata({\n      backoffEndTimeMillis: new Date(\n        lastFailedStreamTime.getTime() + backoffMillis\n      ),\n      numFailedStreams\n    });\n  }\n\n  /**\n   * Increase the backoff duration with a new end time based on Retry Interval.\n   */\n  private async updateBackoffMetadataWithRetryInterval(\n    retryIntervalSeconds: number\n  ): Promise<void> {\n    const currentTime = Date.now();\n    const backoffDurationInMillis = retryIntervalSeconds * 1000;\n    const backoffEndTime = new Date(currentTime + backoffDurationInMillis);\n    const numFailedStreams = 0;\n    await this.storage.setRealtimeBackoffMetadata({\n      backoffEndTimeMillis: backoffEndTime,\n      numFailedStreams\n    });\n    await this.retryHttpConnectionWhenBackoffEnds();\n  }\n\n  /**\n   * HTTP status code that the Realtime client should retry on.\n   */\n  private isStatusCodeRetryable = (statusCode?: number): boolean => {\n    const retryableStatusCodes = [\n      408, // Request Timeout\n      429, // Too Many Requests\n      502, // Bad Gateway\n      503, // Service Unavailable\n      504 // Gateway Timeout\n    ];\n    return !statusCode || retryableStatusCodes.includes(statusCode);\n  };\n\n  /**\n   * Closes the realtime HTTP connection.\n   * Note: This method is designed to be called only once at a time.\n   * If a call is already in progress, subsequent calls will be ignored.\n   */\n  private async closeRealtimeHttpConnection(): Promise<void> {\n    if (this.isClosingConnection) {\n      return;\n    }\n    this.isClosingConnection = true;\n\n    try {\n      if (this.reader) {\n        await this.reader.cancel();\n      }\n    } catch (e) {\n      // The network connection was lost, so cancel() failed.\n      // This is expected in a disconnected state, so we can safely ignore the error.\n      this.logger.debug('Failed to cancel the reader, connection was lost.');\n    } finally {\n      this.reader = undefined;\n    }\n\n    if (this.controller) {\n      await this.controller.abort();\n      this.controller = undefined;\n    }\n\n    this.isClosingConnection = false;\n  }\n\n  private async resetRealtimeBackoff(): Promise<void> {\n    await this.storage.setRealtimeBackoffMetadata({\n      backoffEndTimeMillis: new Date(-1),\n      numFailedStreams: 0\n    });\n  }\n\n  private resetRetryCount(): void {\n    this.httpRetriesRemaining = ORIGINAL_RETRIES;\n  }\n\n  /**\n   * Assembles the request headers and body and executes the fetch request to\n   * establish the real-time streaming connection. This is the \"worker\" method\n   * that performs the actual network communication.\n   */\n  private async establishRealtimeConnection(\n    url: URL,\n    installationId: string,\n    installationTokenResult: string,\n    signal: AbortSignal\n  ): Promise<Response> {\n    const eTagValue = await this.storage.getActiveConfigEtag();\n    const lastKnownVersionNumber =\n      await this.storage.getActiveConfigTemplateVersion();\n\n    const headers = {\n      [API_KEY_HEADER]: this.apiKey,\n      [INSTALLATIONS_AUTH_TOKEN_HEADER]: installationTokenResult,\n      'Content-Type': 'application/json',\n      'Accept': 'application/json',\n      'If-None-Match': eTagValue || '*',\n      'Content-Encoding': 'gzip'\n    };\n\n    const requestBody = {\n      project: this.projectId,\n      namespace: this.namespace,\n      lastKnownVersionNumber,\n      appId: this.appId,\n      sdkVersion: this.sdkVersion,\n      appInstanceId: installationId\n    };\n\n    const response = await fetch(url, {\n      method: 'POST',\n      headers,\n      body: JSON.stringify(requestBody),\n      signal\n    });\n    return response;\n  }\n\n  private getRealtimeUrl(): URL {\n    const urlBase =\n      window.FIREBASE_REMOTE_CONFIG_URL_BASE ||\n      'https://firebaseremoteconfigrealtime.googleapis.com';\n\n    const urlString = `${urlBase}/v1/projects/${this.projectId}/namespaces/${this.namespace}:streamFetchInvalidations?key=${this.apiKey}`;\n    return new URL(urlString);\n  }\n\n  private async createRealtimeConnection(): Promise<Response> {\n    const [installationId, installationTokenResult] = await Promise.all([\n      this.firebaseInstallations.getId(),\n      this.firebaseInstallations.getToken(false)\n    ]);\n    this.controller = new AbortController();\n    const url = this.getRealtimeUrl();\n    const realtimeConnection = await this.establishRealtimeConnection(\n      url,\n      installationId,\n      installationTokenResult,\n      this.controller.signal\n    );\n    return realtimeConnection;\n  }\n\n  /**\n   * Retries HTTP stream connection asyncly in random time intervals.\n   */\n  private async retryHttpConnectionWhenBackoffEnds(): Promise<void> {\n    let backoffMetadata = await this.storage.getRealtimeBackoffMetadata();\n    if (!backoffMetadata) {\n      backoffMetadata = {\n        backoffEndTimeMillis: new Date(NO_BACKOFF_TIME_IN_MILLIS),\n        numFailedStreams: NO_FAILED_REALTIME_STREAMS\n      };\n    }\n    const backoffEndTime = new Date(\n      backoffMetadata.backoffEndTimeMillis\n    ).getTime();\n    const currentTime = Date.now();\n    const retryMillis = Math.max(0, backoffEndTime - currentTime);\n    await this.makeRealtimeHttpConnection(retryMillis);\n  }\n\n  private setIsHttpConnectionRunning(connectionRunning: boolean): void {\n    this.isConnectionActive = connectionRunning;\n  }\n\n  /**\n   * Combines the check and set operations to prevent multiple asynchronous\n   * calls from redundantly starting an HTTP connection. This ensures that\n   * only one attempt is made at a time.\n   */\n  private checkAndSetHttpConnectionFlagIfNotRunning(): boolean {\n    const canMakeConnection = this.canEstablishStreamConnection();\n    if (canMakeConnection) {\n      this.setIsHttpConnectionRunning(true);\n    }\n    return canMakeConnection;\n  }\n\n  private fetchResponseIsUpToDate(\n    fetchResponse: FetchResponse,\n    lastKnownVersion: number\n  ): boolean {\n    // If there is a config, make sure its version is >= the last known version.\n    if (fetchResponse.config != null && fetchResponse.templateVersion) {\n      return fetchResponse.templateVersion >= lastKnownVersion;\n    }\n    // If there isn't a config, return true if the fetch was successful and backend had no update.\n    // Else, it returned an out of date config.\n    return this.storageCache.getLastFetchStatus() === 'success';\n  }\n\n  private parseAndValidateConfigUpdateMessage(message: string): string {\n    const left = message.indexOf('{');\n    const right = message.indexOf('}', left);\n\n    if (left < 0 || right < 0) {\n      return '';\n    }\n    return left >= right ? '' : message.substring(left, right + 1);\n  }\n\n  private isEventListenersEmpty(): boolean {\n    return this.observers.size === 0;\n  }\n\n  private getRandomInt(max: number): number {\n    return Math.floor(Math.random() * max);\n  }\n\n  private executeAllListenerCallbacks(configUpdate: ConfigUpdate): void {\n    this.observers.forEach(observer => observer.next(configUpdate));\n  }\n\n  /**\n   * Compares two configuration objects and returns a set of keys that have changed.\n   * A key is considered changed if it's new, removed, or has a different value.\n   */\n  private getChangedParams(\n    newConfig: FirebaseRemoteConfigObject,\n    oldConfig: FirebaseRemoteConfigObject\n  ): Set<string> {\n    const changedKeys = new Set<string>();\n    const newKeys = new Set(Object.keys(newConfig || {}));\n    const oldKeys = new Set(Object.keys(oldConfig || {}));\n\n    for (const key of newKeys) {\n      if (!oldKeys.has(key) || newConfig[key] !== oldConfig[key]) {\n        changedKeys.add(key);\n      }\n    }\n\n    for (const key of oldKeys) {\n      if (!newKeys.has(key)) {\n        changedKeys.add(key);\n      }\n    }\n\n    return changedKeys;\n  }\n\n  private async fetchLatestConfig(\n    remainingAttempts: number,\n    targetVersion: number\n  ): Promise<void> {\n    const remainingAttemptsAfterFetch = remainingAttempts - 1;\n    const currentAttempt = MAXIMUM_FETCH_ATTEMPTS - remainingAttemptsAfterFetch;\n    const customSignals = this.storageCache.getCustomSignals();\n    if (customSignals) {\n      this.logger.debug(\n        `Fetching config with custom signals: ${JSON.stringify(customSignals)}`\n      );\n    }\n    const abortSignal = new RemoteConfigAbortSignal();\n    try {\n      const fetchRequest: FetchRequest = {\n        cacheMaxAgeMillis: 0,\n        signal: abortSignal,\n        customSignals,\n        fetchType: 'REALTIME',\n        fetchAttempt: currentAttempt\n      };\n\n      const fetchResponse: FetchResponse = await this.cachingClient.fetch(\n        fetchRequest\n      );\n      let activatedConfigs = await this.storage.getActiveConfig();\n\n      if (!this.fetchResponseIsUpToDate(fetchResponse, targetVersion)) {\n        this.logger.debug(\n          \"Fetched template version is the same as SDK's current version.\" +\n            ' Retrying fetch.'\n        );\n        // Continue fetching until template version number is greater than current.\n        await this.autoFetch(remainingAttemptsAfterFetch, targetVersion);\n        return;\n      }\n\n      if (fetchResponse.config == null) {\n        this.logger.debug(\n          'The fetch succeeded, but the backend had no updates.'\n        );\n        return;\n      }\n\n      if (activatedConfigs == null) {\n        activatedConfigs = {};\n      }\n\n      const updatedKeys = this.getChangedParams(\n        fetchResponse.config,\n        activatedConfigs\n      );\n\n      if (updatedKeys.size === 0) {\n        this.logger.debug('Config was fetched, but no params changed.');\n        return;\n      }\n\n      const configUpdate: ConfigUpdate = {\n        getUpdatedKeys(): Set<string> {\n          return new Set(updatedKeys);\n        }\n      };\n      this.executeAllListenerCallbacks(configUpdate);\n    } catch (e: unknown) {\n      const errorMessage = e instanceof Error ? e.message : String(e);\n      const error = ERROR_FACTORY.create(ErrorCode.CONFIG_UPDATE_NOT_FETCHED, {\n        originalErrorMessage: `Failed to auto-fetch config update: ${errorMessage}`\n      });\n      this.propagateError(error);\n    }\n  }\n\n  private async autoFetch(\n    remainingAttempts: number,\n    targetVersion: number\n  ): Promise<void> {\n    if (remainingAttempts === 0) {\n      const error = ERROR_FACTORY.create(ErrorCode.CONFIG_UPDATE_NOT_FETCHED, {\n        originalErrorMessage:\n          'Unable to fetch the latest version of the template.'\n      });\n      this.propagateError(error);\n      return;\n    }\n\n    const timeTillFetchSeconds = this.getRandomInt(4);\n    const timeTillFetchInMiliseconds = timeTillFetchSeconds * 1000;\n\n    await new Promise(resolve =>\n      setTimeout(resolve, timeTillFetchInMiliseconds)\n    );\n    await this.fetchLatestConfig(remainingAttempts, targetVersion);\n  }\n\n  /**\n   * Processes a stream of real-time messages for configuration updates.\n   * This method reassembles fragmented messages, validates and parses the JSON,\n   * and automatically fetches a new config if a newer template version is available.\n   * It also handles server-specified retry intervals and propagates errors for\n   * invalid messages or when real-time updates are disabled.\n   */\n  private async handleNotifications(\n    reader: ReadableStreamDefaultReader<Uint8Array>\n  ): Promise<void> {\n    let partialConfigUpdateMessage: string;\n    let currentConfigUpdateMessage = '';\n\n    while (true) {\n      const { done, value } = await reader.read();\n      if (done) {\n        break;\n      }\n\n      partialConfigUpdateMessage = this.decoder.decode(value, { stream: true });\n      currentConfigUpdateMessage += partialConfigUpdateMessage;\n\n      if (partialConfigUpdateMessage.includes('}')) {\n        currentConfigUpdateMessage = this.parseAndValidateConfigUpdateMessage(\n          currentConfigUpdateMessage\n        );\n\n        if (currentConfigUpdateMessage.length === 0) {\n          continue;\n        }\n\n        try {\n          const jsonObject = JSON.parse(currentConfigUpdateMessage);\n\n          if (this.isEventListenersEmpty()) {\n            break;\n          }\n\n          if (\n            REALTIME_DISABLED_KEY in jsonObject &&\n            jsonObject[REALTIME_DISABLED_KEY] === true\n          ) {\n            const error = ERROR_FACTORY.create(\n              ErrorCode.CONFIG_UPDATE_UNAVAILABLE,\n              {\n                originalErrorMessage:\n                  'The server is temporarily unavailable. Try again in a few minutes.'\n              }\n            );\n            this.propagateError(error);\n            break;\n          }\n\n          if (TEMPLATE_VERSION_KEY in jsonObject) {\n            const oldTemplateVersion =\n              await this.storage.getActiveConfigTemplateVersion();\n            const targetTemplateVersion = Number(\n              jsonObject[TEMPLATE_VERSION_KEY]\n            );\n            if (\n              oldTemplateVersion &&\n              targetTemplateVersion > oldTemplateVersion\n            ) {\n              await this.autoFetch(\n                MAXIMUM_FETCH_ATTEMPTS,\n                targetTemplateVersion\n              );\n            }\n          }\n\n          // This field in the response indicates that the realtime request should retry after the\n          // specified interval to establish a long-lived connection. This interval extends the\n          // backoff duration without affecting the number of retries, so it will not enter an\n          // exponential backoff state.\n          if (REALTIME_RETRY_INTERVAL in jsonObject) {\n            const retryIntervalSeconds = Number(\n              jsonObject[REALTIME_RETRY_INTERVAL]\n            );\n            await this.updateBackoffMetadataWithRetryInterval(\n              retryIntervalSeconds\n            );\n          }\n        } catch (e: unknown) {\n          this.logger.debug('Unable to parse latest config update message.', e);\n          const errorMessage = e instanceof Error ? e.message : String(e);\n          this.propagateError(\n            ERROR_FACTORY.create(ErrorCode.CONFIG_UPDATE_MESSAGE_INVALID, {\n              originalErrorMessage: errorMessage\n            })\n          );\n        }\n        currentConfigUpdateMessage = '';\n      }\n    }\n  }\n\n  private async listenForNotifications(\n    reader: ReadableStreamDefaultReader\n  ): Promise<void> {\n    try {\n      await this.handleNotifications(reader);\n    } catch (e) {\n      // If the real-time connection is at an unexpected lifecycle state when the app is\n      // backgrounded, it's expected closing the connection will throw an exception.\n      if (!this.isInBackground) {\n        // Otherwise, the real-time server connection was closed due to a transient issue.\n        this.logger.debug(\n          'Real-time connection was closed due to an exception.'\n        );\n      }\n    }\n  }\n\n  /**\n   * Open the real-time connection, begin listening for updates, and auto-fetch when an update is\n   * received.\n   *\n   * If the connection is successful, this method will block on its thread while it reads the\n   * chunk-encoded HTTP body. When the connection closes, it attempts to reestablish the stream.\n   */\n  private async prepareAndBeginRealtimeHttpStream(): Promise<void> {\n    if (!this.checkAndSetHttpConnectionFlagIfNotRunning()) {\n      return;\n    }\n\n    let backoffMetadata = await this.storage.getRealtimeBackoffMetadata();\n    if (!backoffMetadata) {\n      backoffMetadata = {\n        backoffEndTimeMillis: new Date(NO_BACKOFF_TIME_IN_MILLIS),\n        numFailedStreams: NO_FAILED_REALTIME_STREAMS\n      };\n    }\n    const backoffEndTime = backoffMetadata.backoffEndTimeMillis.getTime();\n    if (Date.now() < backoffEndTime) {\n      await this.retryHttpConnectionWhenBackoffEnds();\n      return;\n    }\n\n    let response: Response | undefined;\n    let responseCode: number | undefined;\n    try {\n      response = await this.createRealtimeConnection();\n      responseCode = response.status;\n      if (response.ok && response.body) {\n        this.resetRetryCount();\n        await this.resetRealtimeBackoff();\n        const reader = response.body.getReader();\n        this.reader = reader;\n        // Start listening for realtime notifications.\n        await this.listenForNotifications(reader);\n      }\n    } catch (error) {\n      if (this.isInBackground) {\n        // It's possible the app was backgrounded while the connection was open, which\n        // threw an exception trying to read the response. No real error here, so treat\n        // this as a success, even if we haven't read a 200 response code yet.\n        this.resetRetryCount();\n      } else {\n        //there might have been a transient error so the client will retry the connection.\n        this.logger.debug(\n          'Exception connecting to real-time RC backend. Retrying the connection...:',\n          error\n        );\n      }\n    } finally {\n      // Close HTTP connection and associated streams.\n      await this.closeRealtimeHttpConnection();\n      this.setIsHttpConnectionRunning(false);\n\n      // Update backoff metadata if the connection failed in the foreground.\n      const connectionFailed =\n        !this.isInBackground &&\n        (responseCode === undefined ||\n          this.isStatusCodeRetryable(responseCode));\n\n      if (connectionFailed) {\n        await this.updateBackoffMetadataWithLastFailedStreamConnectionTime(\n          new Date()\n        );\n      }\n      // If responseCode is null then no connection was made to server and the SDK should still retry.\n      if (connectionFailed || response?.ok) {\n        await this.retryHttpConnectionWhenBackoffEnds();\n      } else {\n        const errorMessage = `Unable to connect to the server. HTTP status code: ${responseCode}`;\n        const firebaseError = ERROR_FACTORY.create(\n          ErrorCode.CONFIG_UPDATE_STREAM_ERROR,\n          {\n            originalErrorMessage: errorMessage\n          }\n        );\n        this.propagateError(firebaseError);\n      }\n    }\n  }\n\n  /**\n   * Checks whether connection can be made or not based on some conditions\n   * @returns booelean\n   */\n  private canEstablishStreamConnection(): boolean {\n    const hasActiveListeners = this.observers.size > 0;\n    const isNotDisabled = !this.isRealtimeDisabled;\n    const isNoConnectionActive = !this.isConnectionActive;\n    const inForeground = !this.isInBackground;\n    return (\n      hasActiveListeners &&\n      isNotDisabled &&\n      isNoConnectionActive &&\n      inForeground\n    );\n  }\n\n  private async makeRealtimeHttpConnection(delayMillis: number): Promise<void> {\n    if (!this.canEstablishStreamConnection()) {\n      return;\n    }\n    if (this.httpRetriesRemaining > 0) {\n      this.httpRetriesRemaining--;\n      await new Promise(resolve => setTimeout(resolve, delayMillis));\n      void this.prepareAndBeginRealtimeHttpStream();\n    } else if (!this.isInBackground) {\n      const error = ERROR_FACTORY.create(ErrorCode.CONFIG_UPDATE_STREAM_ERROR, {\n        originalErrorMessage:\n          'Unable to connect to the server. Check your connection and try again.'\n      });\n      this.propagateError(error);\n    }\n  }\n\n  private async beginRealtime(): Promise<void> {\n    if (this.observers.size > 0) {\n      await this.makeRealtimeHttpConnection(0);\n    }\n  }\n\n  /**\n   * Adds an observer to the realtime updates.\n   * @param observer The observer to add.\n   */\n  addObserver(observer: ConfigUpdateObserver): void {\n    this.observers.add(observer);\n    void this.beginRealtime();\n  }\n\n  /**\n   * Removes an observer from the realtime updates.\n   * @param observer The observer to remove.\n   */\n  removeObserver(observer: ConfigUpdateObserver): void {\n    if (this.observers.has(observer)) {\n      this.observers.delete(observer);\n    }\n  }\n\n  /**\n   * Handles changes to the application's visibility state, managing the real-time connection.\n   *\n   * When the application is moved to the background, this method closes the existing\n   * real-time connection to save resources. When the application returns to the\n   * foreground, it attempts to re-establish the connection.\n   */\n  private async onVisibilityChange(visible: unknown): Promise<void> {\n    this.isInBackground = !visible;\n    if (!visible) {\n      await this.closeRealtimeHttpConnection();\n    } else if (visible) {\n      await this.beginRealtime();\n    }\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nimport {\n  _registerComponent,\n  registerVersion,\n  SDK_VERSION\n} from '@firebase/app';\nimport { isIndexedDBAvailable } from '@firebase/util';\nimport {\n  Component,\n  ComponentType,\n  ComponentContainer\n} from '@firebase/component';\nimport { Logger, LogLevel as FirebaseLogLevel } from '@firebase/logger';\nimport { RemoteConfig, RemoteConfigOptions } from './public_types';\nimport { name as packageName, version } from '../package.json';\nimport { ensureInitialized } from './api';\nimport { CachingClient } from './client/caching_client';\nimport { RestClient } from './client/rest_client';\nimport { RetryingClient } from './client/retrying_client';\nimport { RC_COMPONENT_NAME } from './constants';\nimport { ErrorCode, ERROR_FACTORY } from './errors';\nimport { RemoteConfig as RemoteConfigImpl } from './remote_config';\nimport { IndexedDbStorage, InMemoryStorage } from './storage/storage';\nimport { StorageCache } from './storage/storage_cache';\nimport { RealtimeHandler } from './client/realtime_handler';\n// This needs to be in the same file that calls `getProvider()` on the component\n// or it will get tree-shaken out.\nimport '@firebase/installations';\n\nexport function registerRemoteConfig(): void {\n  _registerComponent(\n    new Component(\n      RC_COMPONENT_NAME,\n      remoteConfigFactory,\n      ComponentType.PUBLIC\n    ).setMultipleInstances(true)\n  );\n\n  registerVersion(packageName, version);\n  // BUILD_TARGET will be replaced by values like esm, cjs, etc during the compilation\n  registerVersion(packageName, version, '__BUILD_TARGET__');\n\n  function remoteConfigFactory(\n    container: ComponentContainer,\n    { options }: { options?: RemoteConfigOptions }\n  ): RemoteConfig {\n    /* Dependencies */\n    // getImmediate for FirebaseApp will always succeed\n    const app = container.getProvider('app').getImmediate();\n    // The following call will always succeed because rc has `import '@firebase/installations'`\n    const installations = container\n      .getProvider('installations-internal')\n      .getImmediate();\n\n    // Normalizes optional inputs.\n    const { projectId, apiKey, appId } = app.options;\n    if (!projectId) {\n      throw ERROR_FACTORY.create(ErrorCode.REGISTRATION_PROJECT_ID);\n    }\n    if (!apiKey) {\n      throw ERROR_FACTORY.create(ErrorCode.REGISTRATION_API_KEY);\n    }\n    if (!appId) {\n      throw ERROR_FACTORY.create(ErrorCode.REGISTRATION_APP_ID);\n    }\n    const namespace = options?.templateId || 'firebase';\n\n    const storage = isIndexedDBAvailable()\n      ? new IndexedDbStorage(appId, app.name, namespace)\n      : new InMemoryStorage();\n    const storageCache = new StorageCache(storage);\n\n    const logger = new Logger(packageName);\n\n    // Sets ERROR as the default log level.\n    // See RemoteConfig#setLogLevel for corresponding normalization to ERROR log level.\n    logger.logLevel = FirebaseLogLevel.ERROR;\n\n    const restClient = new RestClient(\n      installations,\n      // Uses the JS SDK version, by which the RC package version can be deduced, if necessary.\n      SDK_VERSION,\n      namespace,\n      projectId,\n      apiKey,\n      appId\n    );\n    const retryingClient = new RetryingClient(restClient, storage);\n    const cachingClient = new CachingClient(\n      retryingClient,\n      storage,\n      storageCache,\n      logger\n    );\n\n    const realtimeHandler = new RealtimeHandler(\n      installations,\n      storage,\n      SDK_VERSION,\n      namespace,\n      projectId,\n      apiKey,\n      appId,\n      logger,\n      storageCache,\n      cachingClient\n    );\n\n    const remoteConfigInstance = new RemoteConfigImpl(\n      app,\n      cachingClient,\n      storageCache,\n      storage,\n      logger,\n      realtimeHandler\n    );\n\n    // Starts warming cache.\n    // eslint-disable-next-line @typescript-eslint/no-floating-promises\n    ensureInitialized(remoteConfigInstance);\n\n    return remoteConfigInstance;\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { RemoteConfig } from './public_types';\nimport { activate, fetchConfig } from './api';\nimport {\n  getModularInstance,\n  isIndexedDBAvailable,\n  validateIndexedDBOpenable\n} from '@firebase/util';\n\n// This API is put in a separate file, so we can stub fetchConfig and activate in tests.\n// It's not possible to stub standalone functions from the same module.\n/**\n *\n * Performs fetch and activate operations, as a convenience.\n *\n * @param remoteConfig - The {@link RemoteConfig} instance.\n *\n * @returns A `Promise` which resolves to true if the current call activated the fetched configs.\n * If the fetched configs were already activated, the `Promise` will resolve to false.\n *\n * @public\n */\nexport async function fetchAndActivate(\n  remoteConfig: RemoteConfig\n): Promise<boolean> {\n  remoteConfig = getModularInstance(remoteConfig);\n  await fetchConfig(remoteConfig);\n  return activate(remoteConfig);\n}\n\n/**\n * This method provides two different checks:\n *\n * 1. Check if IndexedDB exists in the browser environment.\n * 2. Check if the current browser context allows IndexedDB `open()` calls.\n *\n * @returns A `Promise` which resolves to true if a {@link RemoteConfig} instance\n * can be initialized in this environment, or false if it cannot.\n * @public\n */\nexport async function isSupported(): Promise<boolean> {\n  if (!isIndexedDBAvailable()) {\n    return false;\n  }\n\n  try {\n    const isDBOpenable: boolean = await validateIndexedDBOpenable();\n    return isDBOpenable;\n  } catch (error) {\n    return false;\n  }\n}\n","/**\n * The Firebase Remote Config Web SDK.\n * This SDK does not work in a Node.js environment.\n *\n * @packageDocumentation\n */\n\n/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n *   http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { registerRemoteConfig } from './register';\n\n// Facilitates debugging by enabling settings changes without rebuilding asset.\n// Note these debug options are not part of a documented, supported API and can change at any time.\n// Consolidates debug options for easier discovery.\n// Uses transient variables on window to avoid lingering state causing panic.\ndeclare global {\n  interface Window {\n    FIREBASE_REMOTE_CONFIG_URL_BASE: string;\n  }\n}\n\nexport * from './api';\nexport * from './api2';\nexport * from './public_types';\n\n/** register component and version 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\ No newline at end of file
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/remote-config-public.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/remote-config-public.d.ts
deleted file mode 100644
index 58c2bbc..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/remote-config-public.d.ts
+++ /dev/null
@@ -1,421 +0,0 @@
-/**
- * The Firebase Remote Config Web SDK.
- * This SDK does not work in a Node.js environment.
- *
- * @packageDocumentation
- */
-
-import { FirebaseApp } from '@firebase/app';
-import { FirebaseError } from '@firebase/app';
-
-/**
- * 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
- */
-export declare function activate(remoteConfig: RemoteConfig): Promise<boolean>;
-
-/**
- * Contains information about which keys have been updated.
- *
- * @public
- */
-export declare interface ConfigUpdate {
-    /**
-     * Parameter keys whose values have been updated from the currently activated values.
-     * Includes keys that are added, deleted, or whose value, value source, or metadata has changed.
-     */
-    getUpdatedKeys(): Set<string>;
-}
-
-/**
- * Observer interface for receiving real-time Remote Config update notifications.
- *
- * NOTE: Although an `complete` callback can be provided, it will
- * never be called because the ConfigUpdate stream is never-ending.
- *
- * @public
- */
-export declare interface ConfigUpdateObserver {
-    /**
-     * Called when a new ConfigUpdate is available.
-     */
-    next: (configUpdate: ConfigUpdate) => void;
-    /**
-     * Called if an error occurs during the stream.
-     */
-    error: (error: FirebaseError) => void;
-    /**
-     * Called when the stream is gracefully terminated.
-     */
-    complete: () => void;
-}
-
-/**
- * Defines the type for representing custom signals and their values.
- *
- * <p>The values in CustomSignals must be one of the following types:
- *
- * <ul>
- *   <li><code>string</code>
- *   <li><code>number</code>
- *   <li><code>null</code>
- * </ul>
- *
- * @public
- */
-export declare interface CustomSignals {
-    [key: string]: string | number | null;
-}
-
-/**
- * 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
- */
-export declare function ensureInitialized(remoteConfig: RemoteConfig): Promise<void>;
-
-/**
- *
- * 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
- */
-export declare function fetchAndActivate(remoteConfig: RemoteConfig): Promise<boolean>;
-
-/**
- * Fetches and caches configuration from the Remote Config service.
- * @param remoteConfig - The {@link RemoteConfig} instance.
- * @public
- */
-export declare function fetchConfig(remoteConfig: RemoteConfig): Promise<void>;
-
-/**
- * Defines a successful response (200 or 304).
- *
- * <p>Modeled after the native `Response` interface, but simplified for Remote Config's
- * use case.
- *
- * @public
- */
-export declare interface FetchResponse {
-    /**
-     * The HTTP status, which is useful for differentiating success responses with data from
-     * those without.
-     *
-     * <p>The Remote Config client is modeled after the native `Fetch` interface, so
-     * HTTP status is first-class.
-     *
-     * <p>Disambiguation: the fetch response returns a legacy "state" value that is redundant with the
-     * HTTP status code. The former is normalized into the latter.
-     */
-    status: number;
-    /**
-     * Defines the ETag response header value.
-     *
-     * <p>Only defined for 200 and 304 responses.
-     */
-    eTag?: string;
-    /**
-     * Defines the map of parameters returned as "entries" in the fetch response body.
-     *
-     * <p>Only defined for 200 responses.
-     */
-    config?: FirebaseRemoteConfigObject;
-    /**
-     * The version number of the config template fetched from the server.
-     */
-    templateVersion?: number;
-}
-
-/**
- * Summarizes the outcome of the last attempt to fetch config from the Firebase Remote Config server.
- *
- * <ul>
- *   <li>"no-fetch-yet" indicates the {@link RemoteConfig} instance has not yet attempted
- *       to fetch config, or that SDK initialization is incomplete.</li>
- *   <li>"success" indicates the last attempt succeeded.</li>
- *   <li>"failure" indicates the last attempt failed.</li>
- *   <li>"throttle" indicates the last attempt was rate-limited.</li>
- * </ul>
- *
- * @public
- */
-export declare type FetchStatus = 'no-fetch-yet' | 'success' | 'failure' | 'throttle';
-
-/**
- * Indicates the type of fetch request.
- *
- * <ul>
- *   <li>"BASE" indicates a standard fetch request.</li>
- *   <li>"REALTIME" indicates a fetch request triggered by a real-time update.</li>
- * </ul>
- *
- * @public
- */
-export declare type FetchType = 'BASE' | 'REALTIME';
-
-/**
- * Defines a self-descriptive reference for config key-value pairs.
- *
- *  @public
- */
-export declare interface FirebaseRemoteConfigObject {
-    [key: string]: string;
-}
-
-/**
- * Gets all config.
- *
- * @param remoteConfig - The {@link RemoteConfig} instance.
- * @returns All config.
- *
- * @public
- */
-export declare function getAll(remoteConfig: RemoteConfig): Record<string, Value>;
-
-/**
- * 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
- */
-export declare function getBoolean(remoteConfig: RemoteConfig, key: string): boolean;
-
-/**
- * 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
- */
-export declare function getNumber(remoteConfig: RemoteConfig, key: string): number;
-
-/**
- *
- * @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
- */
-export declare function getRemoteConfig(app?: FirebaseApp, options?: RemoteConfigOptions): RemoteConfig;
-
-/**
- * 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
- */
-export declare function getString(remoteConfig: RemoteConfig, key: string): string;
-
-/**
- * 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
- */
-export declare function getValue(remoteConfig: RemoteConfig, key: string): Value;
-
-/**
- * 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
- */
-export declare function isSupported(): Promise<boolean>;
-
-/**
- * Defines levels of Remote Config logging.
- *
- * @public
- */
-export declare type LogLevel = 'debug' | 'error' | 'silent';
-
-/**
- * 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
- */
-export declare function onConfigUpdate(remoteConfig: RemoteConfig, observer: ConfigUpdateObserver): Unsubscribe;
-
-/**
- * The Firebase Remote Config service interface.
- *
- * @public
- */
-export declare interface RemoteConfig {
-    /**
-     * The {@link @firebase/app#FirebaseApp} this `RemoteConfig` instance is associated with.
-     */
-    app: FirebaseApp;
-    /**
-     * Defines configuration for the Remote Config SDK.
-     */
-    settings: RemoteConfigSettings;
-    /**
-     * Object containing default values for configs.
-     */
-    defaultConfig: {
-        [key: string]: string | number | boolean;
-    };
-    /**
-     * The Unix timestamp in milliseconds of the last <i>successful</i> fetch, or negative one if
-     * the {@link RemoteConfig} instance either hasn't fetched or initialization
-     * is incomplete.
-     */
-    fetchTimeMillis: number;
-    /**
-     * The status of the last fetch <i>attempt</i>.
-     */
-    lastFetchStatus: FetchStatus;
-}
-
-/**
- * Options for Remote Config initialization.
- *
- * @public
- */
-export declare interface RemoteConfigOptions {
-    /**
-     * The ID of the template to use. If not provided, defaults to "firebase".
-     */
-    templateId?: string;
-    /**
-     * Hydrates the state with an initial fetch response.
-     */
-    initialFetchResponse?: FetchResponse;
-}
-
-/**
- * Defines configuration options for the Remote Config SDK.
- *
- * @public
- */
-export declare interface RemoteConfigSettings {
-    /**
-     * Defines the maximum age in milliseconds of an entry in the config cache before
-     * it is considered stale. Defaults to 43200000 (Twelve hours).
-     */
-    minimumFetchIntervalMillis: number;
-    /**
-     * Defines the maximum amount of milliseconds to wait for a response when fetching
-     * configuration from the Remote Config server. Defaults to 60000 (One minute).
-     */
-    fetchTimeoutMillis: number;
-}
-
-/**
- * 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
- */
-export declare function setCustomSignals(remoteConfig: RemoteConfig, customSignals: CustomSignals): Promise<void>;
-
-/**
- * Defines the log level to use.
- *
- * @param remoteConfig - The {@link RemoteConfig} instance.
- * @param logLevel - The log level to set.
- *
- * @public
- */
-export declare function setLogLevel(remoteConfig: RemoteConfig, logLevel: LogLevel): void;
-
-/**
- * A function that unsubscribes from a real-time event stream.
- *
- * @public
- */
-export declare type Unsubscribe = () => void;
-
-/**
- * Wraps a value with metadata and type-safe getters.
- *
- * @public
- */
-export declare interface Value {
-    /**
-     * Gets the value as a boolean.
-     *
-     * The following values (case-insensitive) are interpreted as true:
-     * "1", "true", "t", "yes", "y", "on". Other values are interpreted as false.
-     */
-    asBoolean(): boolean;
-    /**
-     * Gets the value as a number. Comparable to calling <code>Number(value) || 0</code>.
-     */
-    asNumber(): number;
-    /**
-     * Gets the value as a string.
-     */
-    asString(): string;
-    /**
-     * Gets the {@link ValueSource} for the given key.
-     */
-    getSource(): ValueSource;
-}
-
-/**
- * Indicates the source of a value.
- *
- * <ul>
- *   <li>"static" indicates the value was defined by a static constant.</li>
- *   <li>"default" indicates the value was defined by default config.</li>
- *   <li>"remote" indicates the value was defined by fetched config.</li>
- * </ul>
- *
- * @public
- */
-export declare type ValueSource = 'static' | 'default' | 'remote';
-
-export { }
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/remote-config.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/remote-config.d.ts
deleted file mode 100644
index 58c2bbc..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/remote-config.d.ts
+++ /dev/null
@@ -1,421 +0,0 @@
-/**
- * The Firebase Remote Config Web SDK.
- * This SDK does not work in a Node.js environment.
- *
- * @packageDocumentation
- */
-
-import { FirebaseApp } from '@firebase/app';
-import { FirebaseError } from '@firebase/app';
-
-/**
- * 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
- */
-export declare function activate(remoteConfig: RemoteConfig): Promise<boolean>;
-
-/**
- * Contains information about which keys have been updated.
- *
- * @public
- */
-export declare interface ConfigUpdate {
-    /**
-     * Parameter keys whose values have been updated from the currently activated values.
-     * Includes keys that are added, deleted, or whose value, value source, or metadata has changed.
-     */
-    getUpdatedKeys(): Set<string>;
-}
-
-/**
- * Observer interface for receiving real-time Remote Config update notifications.
- *
- * NOTE: Although an `complete` callback can be provided, it will
- * never be called because the ConfigUpdate stream is never-ending.
- *
- * @public
- */
-export declare interface ConfigUpdateObserver {
-    /**
-     * Called when a new ConfigUpdate is available.
-     */
-    next: (configUpdate: ConfigUpdate) => void;
-    /**
-     * Called if an error occurs during the stream.
-     */
-    error: (error: FirebaseError) => void;
-    /**
-     * Called when the stream is gracefully terminated.
-     */
-    complete: () => void;
-}
-
-/**
- * Defines the type for representing custom signals and their values.
- *
- * <p>The values in CustomSignals must be one of the following types:
- *
- * <ul>
- *   <li><code>string</code>
- *   <li><code>number</code>
- *   <li><code>null</code>
- * </ul>
- *
- * @public
- */
-export declare interface CustomSignals {
-    [key: string]: string | number | null;
-}
-
-/**
- * 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
- */
-export declare function ensureInitialized(remoteConfig: RemoteConfig): Promise<void>;
-
-/**
- *
- * 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
- */
-export declare function fetchAndActivate(remoteConfig: RemoteConfig): Promise<boolean>;
-
-/**
- * Fetches and caches configuration from the Remote Config service.
- * @param remoteConfig - The {@link RemoteConfig} instance.
- * @public
- */
-export declare function fetchConfig(remoteConfig: RemoteConfig): Promise<void>;
-
-/**
- * Defines a successful response (200 or 304).
- *
- * <p>Modeled after the native `Response` interface, but simplified for Remote Config's
- * use case.
- *
- * @public
- */
-export declare interface FetchResponse {
-    /**
-     * The HTTP status, which is useful for differentiating success responses with data from
-     * those without.
-     *
-     * <p>The Remote Config client is modeled after the native `Fetch` interface, so
-     * HTTP status is first-class.
-     *
-     * <p>Disambiguation: the fetch response returns a legacy "state" value that is redundant with the
-     * HTTP status code. The former is normalized into the latter.
-     */
-    status: number;
-    /**
-     * Defines the ETag response header value.
-     *
-     * <p>Only defined for 200 and 304 responses.
-     */
-    eTag?: string;
-    /**
-     * Defines the map of parameters returned as "entries" in the fetch response body.
-     *
-     * <p>Only defined for 200 responses.
-     */
-    config?: FirebaseRemoteConfigObject;
-    /**
-     * The version number of the config template fetched from the server.
-     */
-    templateVersion?: number;
-}
-
-/**
- * Summarizes the outcome of the last attempt to fetch config from the Firebase Remote Config server.
- *
- * <ul>
- *   <li>"no-fetch-yet" indicates the {@link RemoteConfig} instance has not yet attempted
- *       to fetch config, or that SDK initialization is incomplete.</li>
- *   <li>"success" indicates the last attempt succeeded.</li>
- *   <li>"failure" indicates the last attempt failed.</li>
- *   <li>"throttle" indicates the last attempt was rate-limited.</li>
- * </ul>
- *
- * @public
- */
-export declare type FetchStatus = 'no-fetch-yet' | 'success' | 'failure' | 'throttle';
-
-/**
- * Indicates the type of fetch request.
- *
- * <ul>
- *   <li>"BASE" indicates a standard fetch request.</li>
- *   <li>"REALTIME" indicates a fetch request triggered by a real-time update.</li>
- * </ul>
- *
- * @public
- */
-export declare type FetchType = 'BASE' | 'REALTIME';
-
-/**
- * Defines a self-descriptive reference for config key-value pairs.
- *
- *  @public
- */
-export declare interface FirebaseRemoteConfigObject {
-    [key: string]: string;
-}
-
-/**
- * Gets all config.
- *
- * @param remoteConfig - The {@link RemoteConfig} instance.
- * @returns All config.
- *
- * @public
- */
-export declare function getAll(remoteConfig: RemoteConfig): Record<string, Value>;
-
-/**
- * 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
- */
-export declare function getBoolean(remoteConfig: RemoteConfig, key: string): boolean;
-
-/**
- * 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
- */
-export declare function getNumber(remoteConfig: RemoteConfig, key: string): number;
-
-/**
- *
- * @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
- */
-export declare function getRemoteConfig(app?: FirebaseApp, options?: RemoteConfigOptions): RemoteConfig;
-
-/**
- * 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
- */
-export declare function getString(remoteConfig: RemoteConfig, key: string): string;
-
-/**
- * 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
- */
-export declare function getValue(remoteConfig: RemoteConfig, key: string): Value;
-
-/**
- * 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
- */
-export declare function isSupported(): Promise<boolean>;
-
-/**
- * Defines levels of Remote Config logging.
- *
- * @public
- */
-export declare type LogLevel = 'debug' | 'error' | 'silent';
-
-/**
- * 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
- */
-export declare function onConfigUpdate(remoteConfig: RemoteConfig, observer: ConfigUpdateObserver): Unsubscribe;
-
-/**
- * The Firebase Remote Config service interface.
- *
- * @public
- */
-export declare interface RemoteConfig {
-    /**
-     * The {@link @firebase/app#FirebaseApp} this `RemoteConfig` instance is associated with.
-     */
-    app: FirebaseApp;
-    /**
-     * Defines configuration for the Remote Config SDK.
-     */
-    settings: RemoteConfigSettings;
-    /**
-     * Object containing default values for configs.
-     */
-    defaultConfig: {
-        [key: string]: string | number | boolean;
-    };
-    /**
-     * The Unix timestamp in milliseconds of the last <i>successful</i> fetch, or negative one if
-     * the {@link RemoteConfig} instance either hasn't fetched or initialization
-     * is incomplete.
-     */
-    fetchTimeMillis: number;
-    /**
-     * The status of the last fetch <i>attempt</i>.
-     */
-    lastFetchStatus: FetchStatus;
-}
-
-/**
- * Options for Remote Config initialization.
- *
- * @public
- */
-export declare interface RemoteConfigOptions {
-    /**
-     * The ID of the template to use. If not provided, defaults to "firebase".
-     */
-    templateId?: string;
-    /**
-     * Hydrates the state with an initial fetch response.
-     */
-    initialFetchResponse?: FetchResponse;
-}
-
-/**
- * Defines configuration options for the Remote Config SDK.
- *
- * @public
- */
-export declare interface RemoteConfigSettings {
-    /**
-     * Defines the maximum age in milliseconds of an entry in the config cache before
-     * it is considered stale. Defaults to 43200000 (Twelve hours).
-     */
-    minimumFetchIntervalMillis: number;
-    /**
-     * Defines the maximum amount of milliseconds to wait for a response when fetching
-     * configuration from the Remote Config server. Defaults to 60000 (One minute).
-     */
-    fetchTimeoutMillis: number;
-}
-
-/**
- * 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
- */
-export declare function setCustomSignals(remoteConfig: RemoteConfig, customSignals: CustomSignals): Promise<void>;
-
-/**
- * Defines the log level to use.
- *
- * @param remoteConfig - The {@link RemoteConfig} instance.
- * @param logLevel - The log level to set.
- *
- * @public
- */
-export declare function setLogLevel(remoteConfig: RemoteConfig, logLevel: LogLevel): void;
-
-/**
- * A function that unsubscribes from a real-time event stream.
- *
- * @public
- */
-export declare type Unsubscribe = () => void;
-
-/**
- * Wraps a value with metadata and type-safe getters.
- *
- * @public
- */
-export declare interface Value {
-    /**
-     * Gets the value as a boolean.
-     *
-     * The following values (case-insensitive) are interpreted as true:
-     * "1", "true", "t", "yes", "y", "on". Other values are interpreted as false.
-     */
-    asBoolean(): boolean;
-    /**
-     * Gets the value as a number. Comparable to calling <code>Number(value) || 0</code>.
-     */
-    asNumber(): number;
-    /**
-     * Gets the value as a string.
-     */
-    asString(): string;
-    /**
-     * Gets the {@link ValueSource} for the given key.
-     */
-    getSource(): ValueSource;
-}
-
-/**
- * Indicates the source of a value.
- *
- * <ul>
- *   <li>"static" indicates the value was defined by a static constant.</li>
- *   <li>"default" indicates the value was defined by default config.</li>
- *   <li>"remote" indicates the value was defined by fetched config.</li>
- * </ul>
- *
- * @public
- */
-export declare type ValueSource = 'static' | 'default' | 'remote';
-
-export { }
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/api.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/api.d.ts
deleted file mode 100644
index 0f16c48..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/api.d.ts
+++ /dev/null
@@ -1,144 +0,0 @@
-/**
- * @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.
- */
-import { FirebaseApp } from '@firebase/app';
-import { CustomSignals, LogLevel as RemoteConfigLogLevel, RemoteConfig, Value, RemoteConfigOptions, ConfigUpdateObserver, Unsubscribe } from './public_types';
-/**
- *
- * @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
- */
-export declare function getRemoteConfig(app?: FirebaseApp, options?: RemoteConfigOptions): RemoteConfig;
-/**
- * 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
- */
-export declare function activate(remoteConfig: RemoteConfig): Promise<boolean>;
-/**
- * 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
- */
-export declare function ensureInitialized(remoteConfig: RemoteConfig): Promise<void>;
-/**
- * Fetches and caches configuration from the Remote Config service.
- * @param remoteConfig - The {@link RemoteConfig} instance.
- * @public
- */
-export declare function fetchConfig(remoteConfig: RemoteConfig): Promise<void>;
-/**
- * Gets all config.
- *
- * @param remoteConfig - The {@link RemoteConfig} instance.
- * @returns All config.
- *
- * @public
- */
-export declare function getAll(remoteConfig: RemoteConfig): Record<string, Value>;
-/**
- * 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
- */
-export declare function getBoolean(remoteConfig: RemoteConfig, key: string): boolean;
-/**
- * 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
- */
-export declare function getNumber(remoteConfig: RemoteConfig, key: string): number;
-/**
- * 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
- */
-export declare function getString(remoteConfig: RemoteConfig, key: string): string;
-/**
- * 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
- */
-export declare function getValue(remoteConfig: RemoteConfig, key: string): Value;
-/**
- * Defines the log level to use.
- *
- * @param remoteConfig - The {@link RemoteConfig} instance.
- * @param logLevel - The log level to set.
- *
- * @public
- */
-export declare function setLogLevel(remoteConfig: RemoteConfig, logLevel: RemoteConfigLogLevel): void;
-/**
- * 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
- */
-export declare function setCustomSignals(remoteConfig: RemoteConfig, customSignals: CustomSignals): Promise<void>;
-/**
- * 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
- */
-export declare function onConfigUpdate(remoteConfig: RemoteConfig, observer: ConfigUpdateObserver): Unsubscribe;
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/api2.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/api2.d.ts
deleted file mode 100644
index ea6a655..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/api2.d.ts
+++ /dev/null
@@ -1,40 +0,0 @@
-/**
- * @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.
- */
-import { RemoteConfig } from './public_types';
-/**
- *
- * 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
- */
-export declare function fetchAndActivate(remoteConfig: RemoteConfig): Promise<boolean>;
-/**
- * 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
- */
-export declare function isSupported(): Promise<boolean>;
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/client/caching_client.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/client/caching_client.d.ts
deleted file mode 100644
index c05bd5f..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/client/caching_client.d.ts
+++ /dev/null
@@ -1,46 +0,0 @@
-/**
- * @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.
- */
-import { StorageCache } from '../storage/storage_cache';
-import { FetchResponse } from '../public_types';
-import { RemoteConfigFetchClient, FetchRequest } from './remote_config_fetch_client';
-import { Storage } from '../storage/storage';
-import { Logger } from '@firebase/logger';
-/**
- * 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.
- */
-export declare class CachingClient implements RemoteConfigFetchClient {
-    private readonly client;
-    private readonly storage;
-    private readonly storageCache;
-    private readonly logger;
-    constructor(client: RemoteConfigFetchClient, storage: Storage, storageCache: StorageCache, 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: number, lastSuccessfulFetchTimestampMillis: number | undefined): boolean;
-    fetch(request: FetchRequest): Promise<FetchResponse>;
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/client/eventEmitter.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/client/eventEmitter.d.ts
deleted file mode 100644
index 2f8b9cc..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/client/eventEmitter.d.ts
+++ /dev/null
@@ -1,39 +0,0 @@
-/**
- * @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.
- */
-/**
- * Base class to be used if you want to emit events. Call the constructor with
- * the set of allowed event names.
- */
-export declare abstract class EventEmitter {
-    private allowedEvents_;
-    private listeners_;
-    constructor(allowedEvents_: string[]);
-    /**
-     * To be overridden by derived classes in order to fire an initial event when
-     * somebody subscribes for data.
-     *
-     * @returns {Array.<*>} Array of parameters to trigger initial event with.
-     */
-    abstract getInitialEvent(eventType: string): unknown[];
-    /**
-     * To be called by derived classes to trigger events.
-     */
-    protected trigger(eventType: string, ...varArgs: unknown[]): void;
-    on(eventType: string, callback: (a: unknown) => void, context: unknown): void;
-    off(eventType: string, callback: (a: unknown) => void, context: unknown): void;
-    private validateEventType_;
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/client/realtime_handler.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/client/realtime_handler.d.ts
deleted file mode 100644
index 3fa7c87..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/client/realtime_handler.d.ts
+++ /dev/null
@@ -1,141 +0,0 @@
-/**
- * @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.
- */
-import { _FirebaseInstallationsInternal } from '@firebase/installations';
-import { Logger } from '@firebase/logger';
-import { ConfigUpdateObserver } from '../public_types';
-import { Storage } from '../storage/storage';
-import { StorageCache } from '../storage/storage_cache';
-import { CachingClient } from './caching_client';
-export declare class RealtimeHandler {
-    private readonly firebaseInstallations;
-    private readonly storage;
-    private readonly sdkVersion;
-    private readonly namespace;
-    private readonly projectId;
-    private readonly apiKey;
-    private readonly appId;
-    private readonly logger;
-    private readonly storageCache;
-    private readonly cachingClient;
-    constructor(firebaseInstallations: _FirebaseInstallationsInternal, storage: Storage, sdkVersion: string, namespace: string, projectId: string, apiKey: string, appId: string, logger: Logger, storageCache: StorageCache, cachingClient: CachingClient);
-    private observers;
-    private isConnectionActive;
-    private isRealtimeDisabled;
-    private controller?;
-    private reader;
-    private httpRetriesRemaining;
-    private isInBackground;
-    private readonly decoder;
-    private isClosingConnection;
-    private setRetriesRemaining;
-    private propagateError;
-    /**
-     * 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.
-     */
-    private updateBackoffMetadataWithLastFailedStreamConnectionTime;
-    /**
-     * Increase the backoff duration with a new end time based on Retry Interval.
-     */
-    private updateBackoffMetadataWithRetryInterval;
-    /**
-     * HTTP status code that the Realtime client should retry on.
-     */
-    private isStatusCodeRetryable;
-    /**
-     * 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.
-     */
-    private closeRealtimeHttpConnection;
-    private resetRealtimeBackoff;
-    private resetRetryCount;
-    /**
-     * 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.
-     */
-    private establishRealtimeConnection;
-    private getRealtimeUrl;
-    private createRealtimeConnection;
-    /**
-     * Retries HTTP stream connection asyncly in random time intervals.
-     */
-    private retryHttpConnectionWhenBackoffEnds;
-    private setIsHttpConnectionRunning;
-    /**
-     * 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.
-     */
-    private checkAndSetHttpConnectionFlagIfNotRunning;
-    private fetchResponseIsUpToDate;
-    private parseAndValidateConfigUpdateMessage;
-    private isEventListenersEmpty;
-    private getRandomInt;
-    private executeAllListenerCallbacks;
-    /**
-     * 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.
-     */
-    private getChangedParams;
-    private fetchLatestConfig;
-    private autoFetch;
-    /**
-     * 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.
-     */
-    private handleNotifications;
-    private listenForNotifications;
-    /**
-     * 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.
-     */
-    private prepareAndBeginRealtimeHttpStream;
-    /**
-     * Checks whether connection can be made or not based on some conditions
-     * @returns booelean
-     */
-    private canEstablishStreamConnection;
-    private makeRealtimeHttpConnection;
-    private beginRealtime;
-    /**
-     * Adds an observer to the realtime updates.
-     * @param observer The observer to add.
-     */
-    addObserver(observer: ConfigUpdateObserver): void;
-    /**
-     * Removes an observer from the realtime updates.
-     * @param observer The observer to remove.
-     */
-    removeObserver(observer: ConfigUpdateObserver): void;
-    /**
-     * 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.
-     */
-    private onVisibilityChange;
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/client/remote_config_fetch_client.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/client/remote_config_fetch_client.d.ts
deleted file mode 100644
index e72ce51..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/client/remote_config_fetch_client.d.ts
+++ /dev/null
@@ -1,104 +0,0 @@
-/**
- * @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.
- */
-import { CustomSignals, FetchResponse, FetchType } from '../public_types';
-/**
- * Defines a client, as in https://en.wikipedia.org/wiki/Client%E2%80%93server_model, for the
- * Remote Config server (https://firebase.google.com/docs/reference/remote-config/rest).
- *
- * <p>Abstracts throttle, response cache and network implementation details.
- *
- * <p>Modeled after the native {@link GlobalFetch} interface, which is relatively modern and
- * convenient, but simplified for Remote Config's use case.
- *
- * Disambiguation: {@link GlobalFetch} interface and the Remote Config service define "fetch"
- * methods. The RestClient uses the former to make HTTP calls. This interface abstracts the latter.
- */
-export interface RemoteConfigFetchClient {
-    /**
-     * @throws if response status is not 200 or 304.
-     */
-    fetch(request: FetchRequest): Promise<FetchResponse>;
-}
-/**
- * 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.
- */
-export declare class RemoteConfigAbortSignal {
-    listeners: Array<() => void>;
-    addEventListener(listener: () => void): void;
-    abort(): void;
-}
-/**
- * Defines per-request inputs for the Remote Config fetch request.
- *
- * <p>Modeled after the native {@link Request} interface, but simplified for Remote Config's
- * use case.
- */
-export interface FetchRequest {
-    /**
-     * Uses cached config if it is younger than this age.
-     *
-     * <p>Required because it's defined by settings, which always have a value.
-     *
-     * <p>Comparable to passing `headers = { 'Cache-Control': max-age <maxAge> }` to the native
-     * Fetch API.
-     */
-    cacheMaxAgeMillis: number;
-    /**
-     * An event bus for the signal to abort a request.
-     *
-     * <p>Required because all requests should be abortable.
-     *
-     * <p>Comparable to the native
-     * Fetch API's "signal" field on its request configuration object
-     * https://fetch.spec.whatwg.org/#dom-requestinit-signal.
-     *
-     * <p>Disambiguation: Remote Config commonly refers to API inputs as
-     * "signals". See the private ConfigFetchRequestBody interface for those:
-     * http://google3/firebase/remote_config/web/src/core/rest_client.ts?l=14&rcl=255515243.
-     */
-    signal: RemoteConfigAbortSignal;
-    /**
-     * The ETag header value from the last response.
-     *
-     * <p>Optional in case this is the first request.
-     *
-     * <p>Comparable to passing `headers = { 'If-None-Match': <eTag> }` to the native Fetch API.
-     */
-    eTag?: string;
-    /** The custom signals stored for the app instance.
-     *
-     * <p>Optional in case no custom signals are set for the instance.
-     */
-    customSignals?: CustomSignals;
-    /**
-     * The type of fetch to perform, such as a regular fetch or a real-time fetch.
-     *
-     * Optional as not all fetch requests need to be distinguished.
-     */
-    fetchType?: FetchType;
-    /**
-     * The number of fetch attempts made so far for this request.
-     *
-     * Optional as not all fetch requests are part of a retry series.
-     */
-    fetchAttempt?: number;
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/client/rest_client.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/client/rest_client.d.ts
deleted file mode 100644
index 24a3fe0..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/client/rest_client.d.ts
+++ /dev/null
@@ -1,41 +0,0 @@
-/**
- * @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.
- */
-import { FetchResponse } from '../public_types';
-import { RemoteConfigFetchClient, FetchRequest } from './remote_config_fetch_client';
-import { _FirebaseInstallationsInternal } from '@firebase/installations';
-/**
- * Implements the Client abstraction for the Remote Config REST API.
- */
-export declare class RestClient implements RemoteConfigFetchClient {
-    private readonly firebaseInstallations;
-    private readonly sdkVersion;
-    private readonly namespace;
-    private readonly projectId;
-    private readonly apiKey;
-    private readonly appId;
-    constructor(firebaseInstallations: _FirebaseInstallationsInternal, sdkVersion: string, namespace: string, projectId: string, apiKey: string, appId: string);
-    /**
-     * 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.
-     */
-    fetch(request: FetchRequest): Promise<FetchResponse>;
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/client/retrying_client.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/client/retrying_client.d.ts
deleted file mode 100644
index 06c7ff0..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/client/retrying_client.d.ts
+++ /dev/null
@@ -1,50 +0,0 @@
-/**
- * @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.
- */
-import { FetchResponse } from '../public_types';
-import { RemoteConfigAbortSignal, RemoteConfigFetchClient, FetchRequest } from './remote_config_fetch_client';
-import { ThrottleMetadata, Storage } from '../storage/storage';
-/**
- * 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.
- */
-export declare function setAbortableTimeout(signal: RemoteConfigAbortSignal, throttleEndTimeMillis: number): Promise<void>;
-/**
- * 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).
- */
-export declare class RetryingClient implements RemoteConfigFetchClient {
-    private readonly client;
-    private readonly storage;
-    constructor(client: RemoteConfigFetchClient, storage: Storage);
-    fetch(request: FetchRequest): Promise<FetchResponse>;
-    /**
-     * A recursive helper for attempting a fetch request repeatedly.
-     *
-     * @throws any non-retriable errors.
-     */
-    attemptFetch(request: FetchRequest, { throttleEndTimeMillis, backoffCount }: ThrottleMetadata): Promise<FetchResponse>;
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/client/visibility_monitor.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/client/visibility_monitor.d.ts
deleted file mode 100644
index ef40083..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/client/visibility_monitor.d.ts
+++ /dev/null
@@ -1,23 +0,0 @@
-/**
- * @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.
- */
-import { EventEmitter } from './eventEmitter';
-export declare class VisibilityMonitor extends EventEmitter {
-    private visible_;
-    static getInstance(): VisibilityMonitor;
-    constructor();
-    getInitialEvent(eventType: string): boolean[];
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/constants.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/constants.d.ts
deleted file mode 100644
index 1663d8f..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/constants.d.ts
+++ /dev/null
@@ -1,20 +0,0 @@
-/**
- * @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.
- */
-export declare const RC_COMPONENT_NAME = "remote-config";
-export declare const RC_CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS = 100;
-export declare const RC_CUSTOM_SIGNAL_KEY_MAX_LENGTH = 250;
-export declare const RC_CUSTOM_SIGNAL_VALUE_MAX_LENGTH = 500;
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/errors.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/errors.d.ts
deleted file mode 100644
index 3cf0b55..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/errors.d.ts
+++ /dev/null
@@ -1,83 +0,0 @@
-/**
- * @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.
- */
-import { ErrorFactory } from '@firebase/util';
-export declare const enum ErrorCode {
-    ALREADY_INITIALIZED = "already-initialized",
-    REGISTRATION_WINDOW = "registration-window",
-    REGISTRATION_PROJECT_ID = "registration-project-id",
-    REGISTRATION_API_KEY = "registration-api-key",
-    REGISTRATION_APP_ID = "registration-app-id",
-    STORAGE_OPEN = "storage-open",
-    STORAGE_GET = "storage-get",
-    STORAGE_SET = "storage-set",
-    STORAGE_DELETE = "storage-delete",
-    FETCH_NETWORK = "fetch-client-network",
-    FETCH_TIMEOUT = "fetch-timeout",
-    FETCH_THROTTLE = "fetch-throttle",
-    FETCH_PARSE = "fetch-client-parse",
-    FETCH_STATUS = "fetch-status",
-    INDEXED_DB_UNAVAILABLE = "indexed-db-unavailable",
-    CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS = "custom-signal-max-allowed-signals",
-    CONFIG_UPDATE_STREAM_ERROR = "stream-error",
-    CONFIG_UPDATE_UNAVAILABLE = "realtime-unavailable",
-    CONFIG_UPDATE_MESSAGE_INVALID = "update-message-invalid",
-    CONFIG_UPDATE_NOT_FETCHED = "update-not-fetched"
-}
-interface ErrorParams {
-    [ErrorCode.STORAGE_OPEN]: {
-        originalErrorMessage: string | undefined;
-    };
-    [ErrorCode.STORAGE_GET]: {
-        originalErrorMessage: string | undefined;
-    };
-    [ErrorCode.STORAGE_SET]: {
-        originalErrorMessage: string | undefined;
-    };
-    [ErrorCode.STORAGE_DELETE]: {
-        originalErrorMessage: string | undefined;
-    };
-    [ErrorCode.FETCH_NETWORK]: {
-        originalErrorMessage: string;
-    };
-    [ErrorCode.FETCH_THROTTLE]: {
-        throttleEndTimeMillis: number;
-    };
-    [ErrorCode.FETCH_PARSE]: {
-        originalErrorMessage: string;
-    };
-    [ErrorCode.FETCH_STATUS]: {
-        httpStatus: number;
-    };
-    [ErrorCode.CUSTOM_SIGNAL_MAX_ALLOWED_SIGNALS]: {
-        maxSignals: number;
-    };
-    [ErrorCode.CONFIG_UPDATE_STREAM_ERROR]: {
-        originalErrorMessage: string;
-    };
-    [ErrorCode.CONFIG_UPDATE_UNAVAILABLE]: {
-        originalErrorMessage: string;
-    };
-    [ErrorCode.CONFIG_UPDATE_MESSAGE_INVALID]: {
-        originalErrorMessage: string;
-    };
-    [ErrorCode.CONFIG_UPDATE_NOT_FETCHED]: {
-        originalErrorMessage: string;
-    };
-}
-export declare const ERROR_FACTORY: ErrorFactory<ErrorCode, ErrorParams>;
-export declare function hasErrorCode(e: Error, errorCode: ErrorCode): boolean;
-export {};
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/global_index.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/global_index.d.ts
deleted file mode 100644
index 524adb1..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/global_index.d.ts
+++ /dev/null
@@ -1,655 +0,0 @@
-/**
- * @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.
- */
-interface VersionService {
-    library: string;
-    version: string;
-}
-interface PlatformLoggerService {
-    getPlatformInfoString(): string;
-}
-interface HeartbeatService {
-    /**
-     * Called to report a heartbeat. The function will generate
-     * a HeartbeatsByUserAgent object, update heartbeatsCache, and persist it
-     * to IndexedDB.
-     * Note that we only store one heartbeat per day. So if a heartbeat for today is
-     * already logged, subsequent calls to this function in the same day will be ignored.
-     */
-    triggerHeartbeat(): Promise<void>;
-    /**
-     * Returns a base64 encoded string which can be attached to the heartbeat-specific header directly.
-     * It also clears all heartbeats from memory as well as in IndexedDB.
-     */
-    getHeartbeatsHeader(): Promise<string>;
-}
-
-/**
- * @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.
- */
-
-/**
- * A {@link @firebase/app#FirebaseApp} holds the initialization information for a collection of
- * services.
- *
- * Do not call this constructor directly. Instead, use
- * {@link (initializeApp:1) | initializeApp()} to create an app.
- *
- * @public
- */
-interface FirebaseApp {
-    /**
-     * The (read-only) name for this app.
-     *
-     * The default app's name is `"[DEFAULT]"`.
-     *
-     * @example
-     * ```javascript
-     * // The default app's name is "[DEFAULT]"
-     * const app = initializeApp(defaultAppConfig);
-     * console.log(app.name);  // "[DEFAULT]"
-     * ```
-     *
-     * @example
-     * ```javascript
-     * // A named app's name is what you provide to initializeApp()
-     * const otherApp = initializeApp(otherAppConfig, "other");
-     * console.log(otherApp.name);  // "other"
-     * ```
-     */
-    readonly name: string;
-    /**
-     * The (read-only) configuration options for this app. These are the original
-     * parameters given in {@link (initializeApp:1) | initializeApp()}.
-     *
-     * @example
-     * ```javascript
-     * const app = initializeApp(config);
-     * console.log(app.options.databaseURL === config.databaseURL);  // true
-     * ```
-     */
-    readonly options: FirebaseOptions;
-    /**
-     * The settable config flag for GDPR opt-in/opt-out
-     */
-    automaticDataCollectionEnabled: boolean;
-}
-/**
- * @public
- *
- * Firebase configuration object. Contains a set of parameters required by
- * services in order to successfully communicate with Firebase server APIs
- * and to associate client data with your Firebase project and
- * Firebase application. Typically this object is populated by the Firebase
- * console at project setup. See also:
- * {@link https://firebase.google.com/docs/web/setup#config-object | Learn about the Firebase config object}.
- */
-interface FirebaseOptions {
-    /**
-     * An encrypted string used when calling certain APIs that don't need to
-     * access private user data
-     * (example value: `AIzaSyDOCAbC123dEf456GhI789jKl012-MnO`).
-     */
-    apiKey?: string;
-    /**
-     * Auth domain for the project ID.
-     */
-    authDomain?: string;
-    /**
-     * Default Realtime Database URL.
-     */
-    databaseURL?: string;
-    /**
-     * The unique identifier for the project across all of Firebase and
-     * Google Cloud.
-     */
-    projectId?: string;
-    /**
-     * The default Cloud Storage bucket name.
-     */
-    storageBucket?: string;
-    /**
-     * Unique numerical value used to identify each sender that can send
-     * Firebase Cloud Messaging messages to client apps.
-     */
-    messagingSenderId?: string;
-    /**
-     * Unique identifier for the app.
-     */
-    appId?: string;
-    /**
-     * An ID automatically created when you enable Analytics in your
-     * Firebase project and register a web app. In versions 7.20.0
-     * and higher, this parameter is optional.
-     */
-    measurementId?: string;
-}
-declare module '@firebase/component' {
-    interface NameServiceMapping {
-        'app': FirebaseApp;
-        'app-version': VersionService;
-        'heartbeat': HeartbeatService;
-        'platform-logger': PlatformLoggerService;
-    }
-}
-
-/**
- * An object that can be injected into the environment as __FIREBASE_DEFAULTS__,
- * either as a property of globalThis, a shell environment variable, or a
- * cookie.
- *
- * This object can be used to automatically configure and initialize
- * a Firebase app as well as any emulators.
- *
- * @public
- */
-interface FirebaseDefaults {
-    config?: Record<string, string>;
-    emulatorHosts?: Record<string, string>;
-    _authTokenSyncURL?: string;
-    _authIdTokenMaxAge?: number;
-    /**
-     * Override Firebase's runtime environment detection and
-     * force the SDK to act as if it were in the specified environment.
-     */
-    forceEnvironment?: 'browser' | 'node';
-    [key: string]: unknown;
-}
-declare global {
-    var __FIREBASE_DEFAULTS__: FirebaseDefaults | undefined;
-}
-
-declare class FirebaseError extends Error {
-    /** The error code for this error. */
-    readonly code: string;
-    /** Custom data for this error. */
-    customData?: Record<string, unknown> | undefined;
-    /** The custom name for all FirebaseErrors. */
-    readonly name: string;
-    constructor(
-    /** The error code for this error. */
-    code: string, message: string, 
-    /** Custom data for this error. */
-    customData?: Record<string, unknown> | undefined);
-}
-
-/**
- * @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.
- */
-
-/**
- * The Firebase Remote Config service interface.
- *
- * @public
- */
-interface RemoteConfig {
-    /**
-     * The {@link @firebase/app#FirebaseApp} this `RemoteConfig` instance is associated with.
-     */
-    app: FirebaseApp;
-    /**
-     * Defines configuration for the Remote Config SDK.
-     */
-    settings: RemoteConfigSettings;
-    /**
-     * Object containing default values for configs.
-     */
-    defaultConfig: {
-        [key: string]: string | number | boolean;
-    };
-    /**
-     * The Unix timestamp in milliseconds of the last <i>successful</i> fetch, or negative one if
-     * the {@link RemoteConfig} instance either hasn't fetched or initialization
-     * is incomplete.
-     */
-    fetchTimeMillis: number;
-    /**
-     * The status of the last fetch <i>attempt</i>.
-     */
-    lastFetchStatus: FetchStatus;
-}
-/**
- * Defines a self-descriptive reference for config key-value pairs.
- *
- *  @public
- */
-interface FirebaseRemoteConfigObject {
-    [key: string]: string;
-}
-/**
- * Defines a successful response (200 or 304).
- *
- * <p>Modeled after the native `Response` interface, but simplified for Remote Config's
- * use case.
- *
- * @public
- */
-interface FetchResponse {
-    /**
-     * The HTTP status, which is useful for differentiating success responses with data from
-     * those without.
-     *
-     * <p>The Remote Config client is modeled after the native `Fetch` interface, so
-     * HTTP status is first-class.
-     *
-     * <p>Disambiguation: the fetch response returns a legacy "state" value that is redundant with the
-     * HTTP status code. The former is normalized into the latter.
-     */
-    status: number;
-    /**
-     * Defines the ETag response header value.
-     *
-     * <p>Only defined for 200 and 304 responses.
-     */
-    eTag?: string;
-    /**
-     * Defines the map of parameters returned as "entries" in the fetch response body.
-     *
-     * <p>Only defined for 200 responses.
-     */
-    config?: FirebaseRemoteConfigObject;
-    /**
-     * The version number of the config template fetched from the server.
-     */
-    templateVersion?: number;
-}
-/**
- * Options for Remote Config initialization.
- *
- * @public
- */
-interface RemoteConfigOptions {
-    /**
-     * The ID of the template to use. If not provided, defaults to "firebase".
-     */
-    templateId?: string;
-    /**
-     * Hydrates the state with an initial fetch response.
-     */
-    initialFetchResponse?: FetchResponse;
-}
-/**
- * Indicates the source of a value.
- *
- * <ul>
- *   <li>"static" indicates the value was defined by a static constant.</li>
- *   <li>"default" indicates the value was defined by default config.</li>
- *   <li>"remote" indicates the value was defined by fetched config.</li>
- * </ul>
- *
- * @public
- */
-type ValueSource = 'static' | 'default' | 'remote';
-/**
- * Wraps a value with metadata and type-safe getters.
- *
- * @public
- */
-interface Value {
-    /**
-     * Gets the value as a boolean.
-     *
-     * The following values (case-insensitive) are interpreted as true:
-     * "1", "true", "t", "yes", "y", "on". Other values are interpreted as false.
-     */
-    asBoolean(): boolean;
-    /**
-     * Gets the value as a number. Comparable to calling <code>Number(value) || 0</code>.
-     */
-    asNumber(): number;
-    /**
-     * Gets the value as a string.
-     */
-    asString(): string;
-    /**
-     * Gets the {@link ValueSource} for the given key.
-     */
-    getSource(): ValueSource;
-}
-/**
- * Defines configuration options for the Remote Config SDK.
- *
- * @public
- */
-interface RemoteConfigSettings {
-    /**
-     * Defines the maximum age in milliseconds of an entry in the config cache before
-     * it is considered stale. Defaults to 43200000 (Twelve hours).
-     */
-    minimumFetchIntervalMillis: number;
-    /**
-     * Defines the maximum amount of milliseconds to wait for a response when fetching
-     * configuration from the Remote Config server. Defaults to 60000 (One minute).
-     */
-    fetchTimeoutMillis: number;
-}
-/**
- * Summarizes the outcome of the last attempt to fetch config from the Firebase Remote Config server.
- *
- * <ul>
- *   <li>"no-fetch-yet" indicates the {@link RemoteConfig} instance has not yet attempted
- *       to fetch config, or that SDK initialization is incomplete.</li>
- *   <li>"success" indicates the last attempt succeeded.</li>
- *   <li>"failure" indicates the last attempt failed.</li>
- *   <li>"throttle" indicates the last attempt was rate-limited.</li>
- * </ul>
- *
- * @public
- */
-type FetchStatus = 'no-fetch-yet' | 'success' | 'failure' | 'throttle';
-/**
- * Defines levels of Remote Config logging.
- *
- * @public
- */
-type LogLevel = 'debug' | 'error' | 'silent';
-/**
- * Defines the type for representing custom signals and their values.
- *
- * <p>The values in CustomSignals must be one of the following types:
- *
- * <ul>
- *   <li><code>string</code>
- *   <li><code>number</code>
- *   <li><code>null</code>
- * </ul>
- *
- * @public
- */
-interface CustomSignals {
-    [key: string]: string | number | null;
-}
-/**
- * Contains information about which keys have been updated.
- *
- * @public
- */
-interface ConfigUpdate {
-    /**
-     * Parameter keys whose values have been updated from the currently activated values.
-     * Includes keys that are added, deleted, or whose value, value source, or metadata has changed.
-     */
-    getUpdatedKeys(): Set<string>;
-}
-/**
- * Observer interface for receiving real-time Remote Config update notifications.
- *
- * NOTE: Although an `complete` callback can be provided, it will
- * never be called because the ConfigUpdate stream is never-ending.
- *
- * @public
- */
-interface ConfigUpdateObserver {
-    /**
-     * Called when a new ConfigUpdate is available.
-     */
-    next: (configUpdate: ConfigUpdate) => void;
-    /**
-     * Called if an error occurs during the stream.
-     */
-    error: (error: FirebaseError) => void;
-    /**
-     * Called when the stream is gracefully terminated.
-     */
-    complete: () => void;
-}
-/**
- * A function that unsubscribes from a real-time event stream.
- *
- * @public
- */
-type Unsubscribe = () => void;
-/**
- * Indicates the type of fetch request.
- *
- * <ul>
- *   <li>"BASE" indicates a standard fetch request.</li>
- *   <li>"REALTIME" indicates a fetch request triggered by a real-time update.</li>
- * </ul>
- *
- * @public
- */
-type FetchType = 'BASE' | 'REALTIME';
-declare module '@firebase/component' {
-    interface NameServiceMapping {
-        'remote-config': RemoteConfig;
-    }
-}
-
-/**
- * @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
- */
-declare function getRemoteConfig(app?: FirebaseApp, options?: RemoteConfigOptions): RemoteConfig;
-/**
- * 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
- */
-declare function activate(remoteConfig: RemoteConfig): Promise<boolean>;
-/**
- * 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
- */
-declare function ensureInitialized(remoteConfig: RemoteConfig): Promise<void>;
-/**
- * Fetches and caches configuration from the Remote Config service.
- * @param remoteConfig - The {@link RemoteConfig} instance.
- * @public
- */
-declare function fetchConfig(remoteConfig: RemoteConfig): Promise<void>;
-/**
- * Gets all config.
- *
- * @param remoteConfig - The {@link RemoteConfig} instance.
- * @returns All config.
- *
- * @public
- */
-declare function getAll(remoteConfig: RemoteConfig): Record<string, Value>;
-/**
- * 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
- */
-declare function getBoolean(remoteConfig: RemoteConfig, key: string): boolean;
-/**
- * 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
- */
-declare function getNumber(remoteConfig: RemoteConfig, key: string): number;
-/**
- * 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
- */
-declare function getString(remoteConfig: RemoteConfig, key: string): string;
-/**
- * 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
- */
-declare function getValue(remoteConfig: RemoteConfig, key: string): Value;
-/**
- * Defines the log level to use.
- *
- * @param remoteConfig - The {@link RemoteConfig} instance.
- * @param logLevel - The log level to set.
- *
- * @public
- */
-declare function setLogLevel(remoteConfig: RemoteConfig, logLevel: LogLevel): void;
-/**
- * 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
- */
-declare function setCustomSignals(remoteConfig: RemoteConfig, customSignals: CustomSignals): Promise<void>;
-/**
- * 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
- */
-declare function onConfigUpdate(remoteConfig: RemoteConfig, observer: ConfigUpdateObserver): Unsubscribe;
-
-/**
- * @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.
- */
-
-/**
- *
- * 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
- */
-declare function fetchAndActivate(remoteConfig: RemoteConfig): Promise<boolean>;
-/**
- * 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
- */
-declare function isSupported(): Promise<boolean>;
-
-/**
- * The Firebase Remote Config Web SDK.
- * This SDK does not work in a Node.js environment.
- *
- * @packageDocumentation
- */
-declare global {
-    interface Window {
-        FIREBASE_REMOTE_CONFIG_URL_BASE: string;
-    }
-}
-
-export { ConfigUpdate, ConfigUpdateObserver, CustomSignals, FetchResponse, FetchStatus, FetchType, FirebaseRemoteConfigObject, LogLevel, RemoteConfig, RemoteConfigOptions, RemoteConfigSettings, Unsubscribe, Value, ValueSource, activate, ensureInitialized, fetchAndActivate, fetchConfig, getAll, getBoolean, getNumber, getRemoteConfig, getString, getValue, isSupported, onConfigUpdate, setCustomSignals, setLogLevel };
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/index.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/index.d.ts
deleted file mode 100644
index fc0de52..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/index.d.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-/**
- * The Firebase Remote Config Web SDK.
- * This SDK does not work in a Node.js environment.
- *
- * @packageDocumentation
- */
-declare global {
-    interface Window {
-        FIREBASE_REMOTE_CONFIG_URL_BASE: string;
-    }
-}
-export * from './api';
-export * from './api2';
-export * from './public_types';
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/language.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/language.d.ts
deleted file mode 100644
index 2bfc669..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/language.d.ts
+++ /dev/null
@@ -1,26 +0,0 @@
-/**
- * @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.
- */
-/**
- * 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}.
- */
-export declare function getUserLanguage(navigatorLanguage?: NavigatorLanguage): string;
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/public_types.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/public_types.d.ts
deleted file mode 100644
index 5c58c66..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/public_types.d.ts
+++ /dev/null
@@ -1,255 +0,0 @@
-/**
- * @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.
- */
-import { FirebaseApp, FirebaseError } from '@firebase/app';
-/**
- * The Firebase Remote Config service interface.
- *
- * @public
- */
-export interface RemoteConfig {
-    /**
-     * The {@link @firebase/app#FirebaseApp} this `RemoteConfig` instance is associated with.
-     */
-    app: FirebaseApp;
-    /**
-     * Defines configuration for the Remote Config SDK.
-     */
-    settings: RemoteConfigSettings;
-    /**
-     * Object containing default values for configs.
-     */
-    defaultConfig: {
-        [key: string]: string | number | boolean;
-    };
-    /**
-     * The Unix timestamp in milliseconds of the last <i>successful</i> fetch, or negative one if
-     * the {@link RemoteConfig} instance either hasn't fetched or initialization
-     * is incomplete.
-     */
-    fetchTimeMillis: number;
-    /**
-     * The status of the last fetch <i>attempt</i>.
-     */
-    lastFetchStatus: FetchStatus;
-}
-/**
- * Defines a self-descriptive reference for config key-value pairs.
- *
- *  @public
- */
-export interface FirebaseRemoteConfigObject {
-    [key: string]: string;
-}
-/**
- * Defines a successful response (200 or 304).
- *
- * <p>Modeled after the native `Response` interface, but simplified for Remote Config's
- * use case.
- *
- * @public
- */
-export interface FetchResponse {
-    /**
-     * The HTTP status, which is useful for differentiating success responses with data from
-     * those without.
-     *
-     * <p>The Remote Config client is modeled after the native `Fetch` interface, so
-     * HTTP status is first-class.
-     *
-     * <p>Disambiguation: the fetch response returns a legacy "state" value that is redundant with the
-     * HTTP status code. The former is normalized into the latter.
-     */
-    status: number;
-    /**
-     * Defines the ETag response header value.
-     *
-     * <p>Only defined for 200 and 304 responses.
-     */
-    eTag?: string;
-    /**
-     * Defines the map of parameters returned as "entries" in the fetch response body.
-     *
-     * <p>Only defined for 200 responses.
-     */
-    config?: FirebaseRemoteConfigObject;
-    /**
-     * The version number of the config template fetched from the server.
-     */
-    templateVersion?: number;
-}
-/**
- * Options for Remote Config initialization.
- *
- * @public
- */
-export interface RemoteConfigOptions {
-    /**
-     * The ID of the template to use. If not provided, defaults to "firebase".
-     */
-    templateId?: string;
-    /**
-     * Hydrates the state with an initial fetch response.
-     */
-    initialFetchResponse?: FetchResponse;
-}
-/**
- * Indicates the source of a value.
- *
- * <ul>
- *   <li>"static" indicates the value was defined by a static constant.</li>
- *   <li>"default" indicates the value was defined by default config.</li>
- *   <li>"remote" indicates the value was defined by fetched config.</li>
- * </ul>
- *
- * @public
- */
-export type ValueSource = 'static' | 'default' | 'remote';
-/**
- * Wraps a value with metadata and type-safe getters.
- *
- * @public
- */
-export interface Value {
-    /**
-     * Gets the value as a boolean.
-     *
-     * The following values (case-insensitive) are interpreted as true:
-     * "1", "true", "t", "yes", "y", "on". Other values are interpreted as false.
-     */
-    asBoolean(): boolean;
-    /**
-     * Gets the value as a number. Comparable to calling <code>Number(value) || 0</code>.
-     */
-    asNumber(): number;
-    /**
-     * Gets the value as a string.
-     */
-    asString(): string;
-    /**
-     * Gets the {@link ValueSource} for the given key.
-     */
-    getSource(): ValueSource;
-}
-/**
- * Defines configuration options for the Remote Config SDK.
- *
- * @public
- */
-export interface RemoteConfigSettings {
-    /**
-     * Defines the maximum age in milliseconds of an entry in the config cache before
-     * it is considered stale. Defaults to 43200000 (Twelve hours).
-     */
-    minimumFetchIntervalMillis: number;
-    /**
-     * Defines the maximum amount of milliseconds to wait for a response when fetching
-     * configuration from the Remote Config server. Defaults to 60000 (One minute).
-     */
-    fetchTimeoutMillis: number;
-}
-/**
- * Summarizes the outcome of the last attempt to fetch config from the Firebase Remote Config server.
- *
- * <ul>
- *   <li>"no-fetch-yet" indicates the {@link RemoteConfig} instance has not yet attempted
- *       to fetch config, or that SDK initialization is incomplete.</li>
- *   <li>"success" indicates the last attempt succeeded.</li>
- *   <li>"failure" indicates the last attempt failed.</li>
- *   <li>"throttle" indicates the last attempt was rate-limited.</li>
- * </ul>
- *
- * @public
- */
-export type FetchStatus = 'no-fetch-yet' | 'success' | 'failure' | 'throttle';
-/**
- * Defines levels of Remote Config logging.
- *
- * @public
- */
-export type LogLevel = 'debug' | 'error' | 'silent';
-/**
- * Defines the type for representing custom signals and their values.
- *
- * <p>The values in CustomSignals must be one of the following types:
- *
- * <ul>
- *   <li><code>string</code>
- *   <li><code>number</code>
- *   <li><code>null</code>
- * </ul>
- *
- * @public
- */
-export interface CustomSignals {
-    [key: string]: string | number | null;
-}
-/**
- * Contains information about which keys have been updated.
- *
- * @public
- */
-export interface ConfigUpdate {
-    /**
-     * Parameter keys whose values have been updated from the currently activated values.
-     * Includes keys that are added, deleted, or whose value, value source, or metadata has changed.
-     */
-    getUpdatedKeys(): Set<string>;
-}
-/**
- * Observer interface for receiving real-time Remote Config update notifications.
- *
- * NOTE: Although an `complete` callback can be provided, it will
- * never be called because the ConfigUpdate stream is never-ending.
- *
- * @public
- */
-export interface ConfigUpdateObserver {
-    /**
-     * Called when a new ConfigUpdate is available.
-     */
-    next: (configUpdate: ConfigUpdate) => void;
-    /**
-     * Called if an error occurs during the stream.
-     */
-    error: (error: FirebaseError) => void;
-    /**
-     * Called when the stream is gracefully terminated.
-     */
-    complete: () => void;
-}
-/**
- * A function that unsubscribes from a real-time event stream.
- *
- * @public
- */
-export type Unsubscribe = () => void;
-/**
- * Indicates the type of fetch request.
- *
- * <ul>
- *   <li>"BASE" indicates a standard fetch request.</li>
- *   <li>"REALTIME" indicates a fetch request triggered by a real-time update.</li>
- * </ul>
- *
- * @public
- */
-export type FetchType = 'BASE' | 'REALTIME';
-declare module '@firebase/component' {
-    interface NameServiceMapping {
-        'remote-config': RemoteConfig;
-    }
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/register.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/register.d.ts
deleted file mode 100644
index 5aab5ab..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/register.d.ts
+++ /dev/null
@@ -1,2 +0,0 @@
-import '@firebase/installations';
-export declare function registerRemoteConfig(): void;
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/remote_config.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/remote_config.d.ts
deleted file mode 100644
index e72b28f..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/remote_config.d.ts
+++ /dev/null
@@ -1,88 +0,0 @@
-/**
- * @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.
- */
-import { FirebaseApp } from '@firebase/app';
-import { RemoteConfig as RemoteConfigType, FetchStatus, RemoteConfigSettings } from './public_types';
-import { StorageCache } from './storage/storage_cache';
-import { RemoteConfigFetchClient } from './client/remote_config_fetch_client';
-import { Storage } from './storage/storage';
-import { Logger } from '@firebase/logger';
-import { RealtimeHandler } from './client/realtime_handler';
-/**
- * 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.
- */
-export declare class RemoteConfig implements RemoteConfigType {
-    readonly app: FirebaseApp;
-    /**
-     * @internal
-     */
-    readonly _client: RemoteConfigFetchClient;
-    /**
-     * @internal
-     */
-    readonly _storageCache: StorageCache;
-    /**
-     * @internal
-     */
-    readonly _storage: Storage;
-    /**
-     * @internal
-     */
-    readonly _logger: Logger;
-    /**
-     * @internal
-     */
-    readonly _realtimeHandler: RealtimeHandler;
-    /**
-     * Tracks completion of initialization promise.
-     * @internal
-     */
-    _isInitializationComplete: boolean;
-    /**
-     * De-duplicates initialization calls.
-     * @internal
-     */
-    _initializePromise?: Promise<void>;
-    settings: RemoteConfigSettings;
-    defaultConfig: {
-        [key: string]: string | number | boolean;
-    };
-    get fetchTimeMillis(): number;
-    get lastFetchStatus(): FetchStatus;
-    constructor(app: FirebaseApp, 
-    /**
-     * @internal
-     */
-    _client: RemoteConfigFetchClient, 
-    /**
-     * @internal
-     */
-    _storageCache: StorageCache, 
-    /**
-     * @internal
-     */
-    _storage: Storage, 
-    /**
-     * @internal
-     */
-    _logger: Logger, 
-    /**
-     * @internal
-     */
-    _realtimeHandler: RealtimeHandler);
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/storage/storage.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/storage/storage.d.ts
deleted file mode 100644
index df20b57..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/storage/storage.d.ts
+++ /dev/null
@@ -1,116 +0,0 @@
-/**
- * @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.
- */
-import { FetchStatus, CustomSignals } from '@firebase/remote-config-types';
-import { FetchResponse, FirebaseRemoteConfigObject } from '../public_types';
-/**
- * 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.
- */
-export declare const APP_NAMESPACE_STORE = "app_namespace_store";
-/**
- * Encapsulates metadata concerning throttled fetch requests.
- */
-export interface ThrottleMetadata {
-    backoffCount: number;
-    throttleEndTimeMillis: number;
-}
-export interface RealtimeBackoffMetadata {
-    numFailedStreams: number;
-    backoffEndTimeMillis: Date;
-}
-/**
- * Provides type-safety for the "key" field used by {@link APP_NAMESPACE_STORE}.
- *
- * <p>This seems like a small price to avoid potentially subtle bugs caused by a typo.
- */
-type ProjectNamespaceKeyFieldValue = 'active_config' | 'active_config_etag' | 'last_fetch_status' | 'last_successful_fetch_timestamp_millis' | 'last_successful_fetch_response' | 'settings' | 'throttle_metadata' | 'custom_signals' | 'realtime_backoff_metadata' | 'last_known_template_version';
-export declare function openDatabase(): Promise<IDBDatabase>;
-/**
- * Abstracts data persistence.
- */
-export declare abstract class Storage {
-    getLastFetchStatus(): Promise<FetchStatus | undefined>;
-    setLastFetchStatus(status: FetchStatus): Promise<void>;
-    getLastSuccessfulFetchTimestampMillis(): Promise<number | undefined>;
-    setLastSuccessfulFetchTimestampMillis(timestamp: number): Promise<void>;
-    getLastSuccessfulFetchResponse(): Promise<FetchResponse | undefined>;
-    setLastSuccessfulFetchResponse(response: FetchResponse): Promise<void>;
-    getActiveConfig(): Promise<FirebaseRemoteConfigObject | undefined>;
-    setActiveConfig(config: FirebaseRemoteConfigObject): Promise<void>;
-    getActiveConfigEtag(): Promise<string | undefined>;
-    setActiveConfigEtag(etag: string): Promise<void>;
-    getThrottleMetadata(): Promise<ThrottleMetadata | undefined>;
-    setThrottleMetadata(metadata: ThrottleMetadata): Promise<void>;
-    deleteThrottleMetadata(): Promise<void>;
-    getCustomSignals(): Promise<CustomSignals | undefined>;
-    abstract setCustomSignals(customSignals: CustomSignals): Promise<CustomSignals>;
-    abstract get<T>(key: ProjectNamespaceKeyFieldValue): Promise<T | undefined>;
-    abstract set<T>(key: ProjectNamespaceKeyFieldValue, value: T): Promise<void>;
-    abstract delete(key: ProjectNamespaceKeyFieldValue): Promise<void>;
-    getRealtimeBackoffMetadata(): Promise<RealtimeBackoffMetadata | undefined>;
-    setRealtimeBackoffMetadata(realtimeMetadata: RealtimeBackoffMetadata): Promise<void>;
-    getActiveConfigTemplateVersion(): Promise<number | undefined>;
-    setActiveConfigTemplateVersion(version: number): Promise<void>;
-}
-export declare class IndexedDbStorage extends Storage {
-    private readonly appId;
-    private readonly appName;
-    private readonly namespace;
-    private readonly openDbPromise;
-    /**
-     * @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: string, appName: string, namespace: string, openDbPromise?: Promise<IDBDatabase>);
-    setCustomSignals(customSignals: CustomSignals): Promise<CustomSignals>;
-    /**
-     * 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.
-     */
-    getWithTransaction<T>(key: ProjectNamespaceKeyFieldValue, transaction: IDBTransaction): Promise<T | undefined>;
-    /**
-     * 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.
-     */
-    setWithTransaction<T>(key: ProjectNamespaceKeyFieldValue, value: T, transaction: IDBTransaction): Promise<void>;
-    get<T>(key: ProjectNamespaceKeyFieldValue): Promise<T | undefined>;
-    set<T>(key: ProjectNamespaceKeyFieldValue, value: T): Promise<void>;
-    delete(key: ProjectNamespaceKeyFieldValue): Promise<void>;
-    createCompositeKey(key: ProjectNamespaceKeyFieldValue): string;
-}
-export declare class InMemoryStorage extends Storage {
-    private storage;
-    get<T>(key: ProjectNamespaceKeyFieldValue): Promise<T>;
-    set<T>(key: ProjectNamespaceKeyFieldValue, value: T): Promise<void>;
-    delete(key: ProjectNamespaceKeyFieldValue): Promise<void>;
-    setCustomSignals(customSignals: CustomSignals): Promise<CustomSignals>;
-}
-export {};
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/storage/storage_cache.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/storage/storage_cache.d.ts
deleted file mode 100644
index e61c523..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/storage/storage_cache.d.ts
+++ /dev/null
@@ -1,51 +0,0 @@
-/**
- * @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.
- */
-import { FetchStatus, CustomSignals } from '@firebase/remote-config-types';
-import { FirebaseRemoteConfigObject } from '../public_types';
-import { Storage } from './storage';
-/**
- * A memory cache layer over storage to support the SDK's synchronous read requirements.
- */
-export declare class StorageCache {
-    private readonly storage;
-    constructor(storage: Storage);
-    /**
-     * Memory caches.
-     */
-    private lastFetchStatus?;
-    private lastSuccessfulFetchTimestampMillis?;
-    private activeConfig?;
-    private customSignals?;
-    /**
-     * Memory-only getters
-     */
-    getLastFetchStatus(): FetchStatus | undefined;
-    getLastSuccessfulFetchTimestampMillis(): number | undefined;
-    getActiveConfig(): FirebaseRemoteConfigObject | undefined;
-    getCustomSignals(): CustomSignals | undefined;
-    /**
-     * Read-ahead getter
-     */
-    loadFromStorage(): Promise<void>;
-    /**
-     * Write-through setters
-     */
-    setLastFetchStatus(status: FetchStatus): Promise<void>;
-    setLastSuccessfulFetchTimestampMillis(timestampMillis: number): Promise<void>;
-    setActiveConfig(activeConfig: FirebaseRemoteConfigObject): Promise<void>;
-    setCustomSignals(customSignals: CustomSignals): Promise<void>;
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/tsdoc-metadata.json b/frontend-old/node_modules/@firebase/remote-config/dist/src/tsdoc-metadata.json
deleted file mode 100644
index 6af1f6a..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/tsdoc-metadata.json
+++ /dev/null
@@ -1,11 +0,0 @@
-// This file is read by tools that parse documentation comments conforming to the TSDoc standard.
-// It should be published with your NPM package.  It should not be tracked by Git.
-{
-  "tsdocVersion": "0.12",
-  "toolPackages": [
-    {
-      "packageName": "@microsoft/api-extractor",
-      "packageVersion": "0.1.2"
-    }
-  ]
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/src/value.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/src/value.d.ts
deleted file mode 100644
index 13e29c3..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/src/value.d.ts
+++ /dev/null
@@ -1,26 +0,0 @@
-/**
- * @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.
- */
-import { Value as ValueType, ValueSource } from '@firebase/remote-config-types';
-export declare class Value implements ValueType {
-    private readonly _source;
-    private readonly _value;
-    constructor(_source: ValueSource, _value?: string);
-    asString(): string;
-    asBoolean(): boolean;
-    asNumber(): number;
-    getSource(): ValueSource;
-}
diff --git a/frontend-old/node_modules/@firebase/remote-config/dist/test/setup.d.ts b/frontend-old/node_modules/@firebase/remote-config/dist/test/setup.d.ts
deleted file mode 100644
index 1c93d90..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/dist/test/setup.d.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * @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.
- */
-export {};
diff --git a/frontend-old/node_modules/@firebase/remote-config/package.json b/frontend-old/node_modules/@firebase/remote-config/package.json
deleted file mode 100644
index 46e7bda..0000000
--- a/frontend-old/node_modules/@firebase/remote-config/package.json
+++ /dev/null
@@ -1,72 +0,0 @@
-{
-  "name": "@firebase/remote-config",
-  "version": "0.7.0",
-  "description": "The Remote Config package of the Firebase JS SDK",
-  "author": "Firebase <firebase-support@google.com> (https://firebase.google.com/)",
-  "main": "dist/index.cjs.js",
-  "browser": "dist/esm/index.esm.js",
-  "module": "dist/esm/index.esm.js",
-  "exports": {
-    ".": {
-      "types": "./dist/remote-config-public.d.ts",
-      "require": "./dist/index.cjs.js",
-      "default": "./dist/esm/index.esm.js"
-    },
-    "./package.json": "./package.json"
-  },
-  "files": [
-    "dist"
-  ],
-  "scripts": {
-    "lint": "eslint -c .eslintrc.js '**/*.ts' --ignore-path '../../.gitignore'",
-    "lint:fix": "eslint --fix -c .eslintrc.js '**/*.ts' --ignore-path '../../.gitignore'",
-    "build": "rollup -c && yarn api-report",
-    "build:deps": "lerna run --scope @firebase/remote-config --include-dependencies build",
-    "build:release": "yarn build && yarn typings:public",
-    "dev": "rollup -c -w",
-    "test": "run-p --npm-path npm lint test:browser",
-    "test:ci": "node ../../scripts/run_tests_in_ci.js -s test:browser",
-    "test:browser": "karma start",
-    "test:debug": "karma start --browsers=Chrome --auto-watch",
-    "trusted-type-check": "tsec -p tsconfig.json --noEmit",
-    "prettier": "prettier --write '{src,test}/**/*.{js,ts}'",
-    "api-report": "api-extractor run --local --verbose",
-    "doc": "api-documenter markdown --input temp --output docs",
-    "build:doc": "yarn build && yarn doc",
-    "typings:public": "node ../../scripts/build/use_typings.js ./dist/remote-config-public.d.ts",
-    "typings:internal": "node ../../scripts/build/use_typings.js ./dist/src/index.d.ts"
-  },
-  "peerDependencies": {
-    "@firebase/app": "0.x"
-  },
-  "dependencies": {
-    "@firebase/installations": "0.6.19",
-    "@firebase/logger": "0.5.0",
-    "@firebase/util": "1.13.0",
-    "@firebase/component": "0.7.0",
-    "tslib": "^2.1.0"
-  },
-  "license": "Apache-2.0",
-  "devDependencies": {
-    "@firebase/app": "0.14.3",
-    "rollup": "2.79.2",
-    "rollup-plugin-dts": "5.3.1",
-    "rollup-plugin-typescript2": "0.36.0",
-    "typescript": "5.5.4"
-  },
-  "repository": {
-    "directory": "packages/remote-config",
-    "type": "git",
-    "url": "git+https://github.com/firebase/firebase-js-sdk.git"
-  },
-  "bugs": {
-    "url": "https://github.com/firebase/firebase-js-sdk/issues"
-  },
-  "typings": "./dist/remote-config-public.d.ts",
-  "nyc": {
-    "extension": [
-      ".ts"
-    ],
-    "reportDir": "./coverage/node"
-  }
-}