/**
 * @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 { Auth, Dependencies } from '../../model/public_types';
import { AuthImpl } from './auth_impl';
/**
 * Initializes an {@link Auth} instance with fine-grained control over
 * {@link Dependencies}.
 *
 * @remarks
 *
 * This function allows more control over the {@link Auth} instance than
 * {@link getAuth}. `getAuth` uses platform-specific defaults to supply
 * the {@link Dependencies}. In general, `getAuth` is the easiest way to
 * initialize Auth and works for most use cases. Use `initializeAuth` if you
 * need control over which persistence layer is used, or to minimize bundle
 * size if you're not using either `signInWithPopup` or `signInWithRedirect`.
 *
 * For example, if your app only uses anonymous accounts and you only want
 * accounts saved for the current session, initialize `Auth` with:
 *
 * ```js
 * const auth = initializeAuth(app, {
 *   persistence: browserSessionPersistence,
 *   popupRedirectResolver: undefined,
 * });
 * ```
 *
 * @public
 */
export declare function initializeAuth(app: FirebaseApp, deps?: Dependencies): Auth;
export declare function _initializeAuthInstance(auth: AuthImpl, deps?: Dependencies): void;