Modules

node_modules/@firebase/remote-config/dist/src/client/caching_client.d.ts

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+/**
+ * @license
+ * Copyright 2019 Google Inc.
+ *
+ * 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, 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>;
+}

node_modules/@firebase/remote-config/dist/src/client/exponential_backoff.d.ts

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+/**
+ * @license
+ * Copyright 2019 Google Inc.
+ *
+ * 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 maximum milliseconds to increase to.
+ *
+ * <p>Visible for testing
+ */
+export declare const MAX_VALUE_MILLIS: number;
+/**
+ * The percentage of backoff time to randomize by.
+ * See
+ * http://go/safe-client-behavior#step-1-determine-the-appropriate-retry-interval-to-handle-spike-traffic
+ * for context.
+ *
+ * <p>Visible for testing
+ */
+export declare const RANDOM_FACTOR = 0.5;
+/**
+ * Based on the backoff method from
+ * https://github.com/google/closure-library/blob/master/closure/goog/math/exponentialbackoff.js.
+ * Extracted here so we don't need to pass metadata and a stateful ExponentialBackoff object around.
+ */
+export declare function calculateBackoffMillis(backoffCount: number): number;

node_modules/@firebase/remote-config/dist/src/client/remote_config_fetch_client.d.ts

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+/**
+ * @license
+ * Copyright 2019 Google Inc.
+ *
+ * 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.
+ */
+/**
+ * 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>;
+}
+/**
+ * Defines a self-descriptive reference for config key-value pairs.
+ */
+export interface FirebaseRemoteConfigObject {
+    [key: string]: string;
+}
+/**
+ * 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;
+}
+/**
+ * Defines a successful response (200 or 304).
+ *
+ * <p>Modeled after the native {@link Response} interface, but simplified for Remote Config's
+ * use case.
+ */
+export interface FetchResponse {
+    /**
+     * The HTTP status, which is useful for differentiating success responses with data from
+     * those without.
+     *
+     * <p>{@link RemoteConfigClient} is modeled after the native {@link GlobalFetch} 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;
+}

node_modules/@firebase/remote-config/dist/src/client/rest_client.d.ts

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+/**
+ * @license
+ * Copyright 2019 Google Inc.
+ *
+ * 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 { FirebaseInstallations } from '@firebase/installations-types';
+import { FetchResponse, RemoteConfigFetchClient, FetchRequest } from './remote_config_fetch_client';
+/**
+ * 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: FirebaseInstallations, 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>;
+}

node_modules/@firebase/remote-config/dist/src/client/retrying_client.d.ts

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+/**
+ * @license
+ * Copyright 2019 Google Inc.
+ *
+ * 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 { RemoteConfigAbortSignal, RemoteConfigFetchClient, FetchResponse, 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>;
+}

node_modules/@firebase/remote-config/dist/src/errors.d.ts

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+/**
+ * @license
+ * Copyright 2019 Google Inc.
+ *
+ * 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 {
+    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"
+}
+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;
+    };
+}
+export declare const ERROR_FACTORY: ErrorFactory<ErrorCode, ErrorParams>;
+export declare function hasErrorCode(e: Error, errorCode: ErrorCode): boolean;
+export {};

node_modules/@firebase/remote-config/dist/src/language.d.ts

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+/**
+ * @license
+ * Copyright 2019 Google Inc.
+ *
+ * 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;

node_modules/@firebase/remote-config/dist/src/remote_config.d.ts

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+/**
+ * @license
+ * Copyright 2019 Google Inc.
+ *
+ * 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-types';
+import { RemoteConfig as RemoteConfigType, FetchStatus, Settings, Value as ValueType, LogLevel as RemoteConfigLogLevel } from '@firebase/remote-config-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';
+/**
+ * Encapsulates business logic mapping network and storage dependencies to the public SDK API.
+ *
+ * See {@link https://github.com/FirebasePrivate/firebase-js-sdk/blob/master/packages/firebase/index.d.ts|interface documentation} for method descriptions.
+ */
+export declare class RemoteConfig implements RemoteConfigType {
+    readonly app: FirebaseApp;
+    private readonly _client;
+    private readonly _storageCache;
+    private readonly _storage;
+    private readonly _logger;
+    private _isInitializationComplete;
+    private _initializePromise?;
+    settings: Settings;
+    defaultConfig: {
+        [key: string]: string | number | boolean;
+    };
+    setLogLevel(logLevel: RemoteConfigLogLevel): void;
+    get fetchTimeMillis(): number;
+    get lastFetchStatus(): FetchStatus;
+    constructor(app: FirebaseApp, _client: RemoteConfigFetchClient, _storageCache: StorageCache, _storage: Storage, _logger: Logger);
+    activate(): Promise<boolean>;
+    ensureInitialized(): Promise<void>;
+    /**
+     * @throws a {@link ErrorCode.FETCH_CLIENT_TIMEOUT} if the request takes longer than
+     * {@link Settings.fetchTimeoutInSeconds} or
+     * {@link DEFAULT_FETCH_TIMEOUT_SECONDS}.
+     */
+    fetch(): Promise<void>;
+    fetchAndActivate(): Promise<boolean>;
+    getAll(): {
+        [key: string]: ValueType;
+    };
+    getBoolean(key: string): boolean;
+    getNumber(key: string): number;
+    getString(key: string): string;
+    getValue(key: string): ValueType;
+}

node_modules/@firebase/remote-config/dist/src/storage/storage.d.ts

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+/**
+ * @license
+ * Copyright 2019 Google Inc.
+ *
+ * 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 } from '@firebase/remote-config-types';
+import { FetchResponse, FirebaseRemoteConfigObject } from '../client/remote_config_fetch_client';
+/**
+ * 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;
+}
+/**
+ * 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.
+ */
+declare type ProjectNamespaceKeyFieldValue = 'active_config' | 'active_config_etag' | 'last_fetch_status' | 'last_successful_fetch_timestamp_millis' | 'last_successful_fetch_response' | 'settings' | 'throttle_metadata';
+export declare function openDatabase(): Promise<IDBDatabase>;
+/**
+ * Abstracts data persistence.
+ */
+export declare class 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>);
+    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>;
+    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 {};

node_modules/@firebase/remote-config/dist/src/storage/storage_cache.d.ts

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+/**
+ * @license
+ * Copyright 2019 Google Inc.
+ *
+ * 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 } from '@firebase/remote-config-types';
+import { FirebaseRemoteConfigObject } from '../client/remote_config_fetch_client';
+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?;
+    /**
+     * Memory-only getters
+     */
+    getLastFetchStatus(): FetchStatus | undefined;
+    getLastSuccessfulFetchTimestampMillis(): number | undefined;
+    getActiveConfig(): FirebaseRemoteConfigObject | 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>;
+}

node_modules/@firebase/remote-config/dist/src/value.d.ts

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+/**
+ * @license
+ * Copyright 2019 Google Inc.
+ *
+ * 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;
+}