/**
 * @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 { User } from '../auth/user';
import { OfflineComponentProviderFactory, OnlineComponentProviderFactory } from '../core/component_provider';
import { DatabaseId } from '../core/database_info';
import { FirestoreClient } from '../core/firestore_client';
import { Firestore as LiteFirestore } from '../lite-api/database';
import { Query } from '../lite-api/reference';
import { AsyncQueue } from '../util/async_queue';
import { LoadBundleTask } from './bundle';
import { CredentialsProvider } from './credentials';
import { FirestoreSettings, PersistenceSettings } from './settings';
export { connectFirestoreEmulator, EmulatorMockTokenOptions } from '../lite-api/database';
declare module '@firebase/component' {
    interface NameServiceMapping {
        'firestore': Firestore;
    }
}
/**
 * Constant used to indicate the LRU garbage collection should be disabled.
 * Set this value as the `cacheSizeBytes` on the settings passed to the
 * {@link Firestore} instance.
 */
export declare const CACHE_SIZE_UNLIMITED = -1;
/**
 * The Cloud Firestore service interface.
 *
 * Do not call this constructor directly. Instead, use {@link (getFirestore:1)}.
 */
export declare class Firestore extends LiteFirestore {
    /**
     * Whether it's a {@link Firestore} or Firestore Lite instance.
     */
    type: 'firestore-lite' | 'firestore';
    _queue: AsyncQueue;
    readonly _persistenceKey: string;
    _firestoreClient: FirestoreClient | undefined;
    _componentsProvider?: {
        _offline: OfflineComponentProviderFactory;
        _online: OnlineComponentProviderFactory;
    };
    /** @hideconstructor */
    constructor(authCredentialsProvider: CredentialsProvider<User>, appCheckCredentialsProvider: CredentialsProvider<string>, databaseId: DatabaseId, app?: FirebaseApp);
    protected _terminate(): Promise<void>;
}
/**
 * Initializes a new instance of {@link Firestore} with the provided settings.
 * Can only be called before any other function, including
 * {@link (getFirestore:1)}. If the custom settings are empty, this function is
 * equivalent to calling {@link (getFirestore:1)}.
 *
 * @param app - The {@link @firebase/app#FirebaseApp} with which the {@link Firestore} instance will
 * be associated.
 * @param settings - A settings object to configure the {@link Firestore} instance.
 * @param databaseId - The name of the database.
 * @returns A newly initialized {@link Firestore} instance.
 */
export declare function initializeFirestore(app: FirebaseApp, settings: FirestoreSettings, databaseId?: string): Firestore;
/**
 * Returns the existing default {@link Firestore} instance that is associated with the
 * default {@link @firebase/app#FirebaseApp}. If no instance exists, initializes a new
 * instance with default settings.
 *
 * @returns The default {@link Firestore} instance of the default app.
 */
export declare function getFirestore(): Firestore;
/**
 * Returns the existing default {@link Firestore} instance that is associated with the
 * provided {@link @firebase/app#FirebaseApp}. If no instance exists, initializes a new
 * instance with default settings.
 *
 * @param app - The {@link @firebase/app#FirebaseApp} instance that the returned {@link Firestore}
 * instance is associated with.
 * @returns The default {@link Firestore} instance of the provided app.
 */
export declare function getFirestore(app: FirebaseApp): Firestore;
/**
 * Returns the existing named {@link Firestore} instance that is associated with the
 * default {@link @firebase/app#FirebaseApp}. If no instance exists, initializes a new
 * instance with default settings.
 *
 * @param databaseId - The name of the database.
 * @returns The named {@link Firestore} instance of the default app.
 * @beta
 */
export declare function getFirestore(databaseId: string): Firestore;
/**
 * Returns the existing named {@link Firestore} instance that is associated with the
 * provided {@link @firebase/app#FirebaseApp}. If no instance exists, initializes a new
 * instance with default settings.
 *
 * @param app - The {@link @firebase/app#FirebaseApp} instance that the returned {@link Firestore}
 * instance is associated with.
 * @param databaseId - The name of the database.
 * @returns The named {@link Firestore} instance of the provided app.
 * @beta
 */
export declare function getFirestore(app: FirebaseApp, databaseId: string): Firestore;
/**
 * @internal
 */
export declare function ensureFirestoreConfigured(firestore: Firestore): FirestoreClient;
export declare function configureFirestore(firestore: Firestore): void;
/**
 * Attempts to enable persistent storage, if possible.
 *
 * On failure, `enableIndexedDbPersistence()` will reject the promise or
 * throw an exception. There are several reasons why this can fail, which can be
 * identified by the `code` on the error.
 *
 *   * failed-precondition: The app is already open in another browser tab.
 *   * unimplemented: The browser is incompatible with the offline persistence
 *     implementation.
 *
 * Note that even after a failure, the {@link Firestore} instance will remain
 * usable, however offline persistence will be disabled.
 *
 * Note: `enableIndexedDbPersistence()` must be called before any other functions
 * (other than {@link initializeFirestore}, {@link (getFirestore:1)} or
 * {@link clearIndexedDbPersistence}.
 *
 * Persistence cannot be used in a Node.js environment.
 *
 * @param firestore - The {@link Firestore} instance to enable persistence for.
 * @param persistenceSettings - Optional settings object to configure
 * persistence.
 * @returns A `Promise` that represents successfully enabling persistent storage.
 * @deprecated This function will be removed in a future major release. Instead, set
 * `FirestoreSettings.localCache` to an instance of `PersistentLocalCache` to
 * turn on IndexedDb cache. Calling this function when `FirestoreSettings.localCache`
 * is already specified will throw an exception.
 */
export declare function enableIndexedDbPersistence(firestore: Firestore, persistenceSettings?: PersistenceSettings): Promise<void>;
/**
 * Attempts to enable multi-tab persistent storage, if possible. If enabled
 * across all tabs, all operations share access to local persistence, including
 * shared execution of queries and latency-compensated local document updates
 * across all connected instances.
 *
 * On failure, `enableMultiTabIndexedDbPersistence()` will reject the promise or
 * throw an exception. There are several reasons why this can fail, which can be
 * identified by the `code` on the error.
 *
 *   * failed-precondition: The app is already open in another browser tab and
 *     multi-tab is not enabled.
 *   * unimplemented: The browser is incompatible with the offline persistence
 *     implementation.
 *
 * Note that even after a failure, the {@link Firestore} instance will remain
 * usable, however offline persistence will be disabled.
 *
 * @param firestore - The {@link Firestore} instance to enable persistence for.
 * @returns A `Promise` that represents successfully enabling persistent
 * storage.
 * @deprecated This function will be removed in a future major release. Instead, set
 * `FirestoreSettings.localCache` to an instance of `PersistentLocalCache` to
 * turn on indexeddb cache. Calling this function when `FirestoreSettings.localCache`
 * is already specified will throw an exception.
 */
export declare function enableMultiTabIndexedDbPersistence(firestore: Firestore): Promise<void>;
/**
 * Clears the persistent storage. This includes pending writes and cached
 * documents.
 *
 * Must be called while the {@link Firestore} instance is not started (after the app is
 * terminated or when the app is first initialized). On startup, this function
 * must be called before other functions (other than {@link
 * initializeFirestore} or {@link (getFirestore:1)})). If the {@link Firestore}
 * instance is still running, the promise will be rejected with the error code
 * of `failed-precondition`.
 *
 * Note: `clearIndexedDbPersistence()` is primarily intended to help write
 * reliable tests that use Cloud Firestore. It uses an efficient mechanism for
 * dropping existing data but does not attempt to securely overwrite or
 * otherwise make cached data unrecoverable. For applications that are sensitive
 * to the disclosure of cached data in between user sessions, we strongly
 * recommend not enabling persistence at all.
 *
 * @param firestore - The {@link Firestore} instance to clear persistence for.
 * @returns A `Promise` that is resolved when the persistent storage is
 * cleared. Otherwise, the promise is rejected with an error.
 */
export declare function clearIndexedDbPersistence(firestore: Firestore): Promise<void>;
/**
 * Waits until all currently pending writes for the active user have been
 * acknowledged by the backend.
 *
 * The returned promise resolves immediately if there are no outstanding writes.
 * Otherwise, the promise waits for all previously issued writes (including
 * those written in a previous app session), but it does not wait for writes
 * that were added after the function is called. If you want to wait for
 * additional writes, call `waitForPendingWrites()` again.
 *
 * Any outstanding `waitForPendingWrites()` promises are rejected during user
 * changes.
 *
 * @returns A `Promise` which resolves when all currently pending writes have been
 * acknowledged by the backend.
 */
export declare function waitForPendingWrites(firestore: Firestore): Promise<void>;
/**
 * Re-enables use of the network for this {@link Firestore} instance after a prior
 * call to {@link disableNetwork}.
 *
 * @returns A `Promise` that is resolved once the network has been enabled.
 */
export declare function enableNetwork(firestore: Firestore): Promise<void>;
/**
 * Disables network usage for this instance. It can be re-enabled via {@link
 * enableNetwork}. While the network is disabled, any snapshot listeners,
 * `getDoc()` or `getDocs()` calls will return results from cache, and any write
 * operations will be queued until the network is restored.
 *
 * @returns A `Promise` that is resolved once the network has been disabled.
 */
export declare function disableNetwork(firestore: Firestore): Promise<void>;
/**
 * Terminates the provided {@link Firestore} instance.
 *
 * After calling `terminate()` only the `clearIndexedDbPersistence()` function
 * may be used. Any other function will throw a `FirestoreError`.
 *
 * To restart after termination, create a new instance of FirebaseFirestore with
 * {@link (getFirestore:1)}.
 *
 * Termination does not cancel any pending writes, and any promises that are
 * awaiting a response from the server will not be resolved. If you have
 * persistence enabled, the next time you start this instance, it will resume
 * sending these writes to the server.
 *
 * Note: Under normal circumstances, calling `terminate()` is not required. This
 * function is useful only when you want to force this instance to release all
 * of its resources or in combination with `clearIndexedDbPersistence()` to
 * ensure that all local state is destroyed between test runs.
 *
 * @returns A `Promise` that is resolved when the instance has been successfully
 * terminated.
 */
export declare function terminate(firestore: Firestore): Promise<void>;
/**
 * Loads a Firestore bundle into the local cache.
 *
 * @param firestore - The {@link Firestore} instance to load bundles for.
 * @param bundleData - An object representing the bundle to be loaded. Valid
 * objects are `ArrayBuffer`, `ReadableStream<Uint8Array>` or `string`.
 *
 * @returns A `LoadBundleTask` object, which notifies callers with progress
 * updates, and completion or error events. It can be used as a
 * `Promise<LoadBundleTaskProgress>`.
 */
export declare function loadBundle(firestore: Firestore, bundleData: ReadableStream<Uint8Array> | ArrayBuffer | string): LoadBundleTask;
/**
 * Reads a Firestore {@link Query} from local cache, identified by the given
 * name.
 *
 * The named queries are packaged  into bundles on the server side (along
 * with resulting documents), and loaded to local cache using `loadBundle`. Once
 * in local cache, use this method to extract a {@link Query} by name.
 *
 * @param firestore - The {@link Firestore} instance to read the query from.
 * @param name - The name of the query.
 * @returns A `Promise` that is resolved with the Query or `null`.
 */
export declare function namedQuery(firestore: Firestore, name: string): Promise<Query | null>;
