/**
 * @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 { UserCredential, Auth, User } from '../../model/public_types';
import { AuthInternal } from '../../model/auth';
import { AuthCredential } from '../credentials';
export declare function _signInWithCredential(auth: AuthInternal, credential: AuthCredential, bypassAuthState?: boolean): Promise<UserCredential>;
/**
 * Asynchronously signs in with the given credentials.
 *
 * @remarks
 * An {@link AuthProvider} can be used to generate the credential.
 *
 * This method is not supported by {@link Auth} instances created with a
 * {@link @firebase/app#FirebaseServerApp}.
 *
 * @param auth - The {@link Auth} instance.
 * @param credential - The auth credential.
 *
 * @public
 */
export declare function signInWithCredential(auth: Auth, credential: AuthCredential): Promise<UserCredential>;
/**
 * Links the user account with the given credentials.
 *
 * @remarks
 * An {@link AuthProvider} can be used to generate the credential.
 *
 * @param user - The user.
 * @param credential - The auth credential.
 *
 * @public
 */
export declare function linkWithCredential(user: User, credential: AuthCredential): Promise<UserCredential>;
/**
 * Re-authenticates a user using a fresh credential.
 *
 * @remarks
 * Use before operations such as {@link updatePassword} that require tokens from recent sign-in
 * attempts. This method can be used to recover from a `CREDENTIAL_TOO_OLD_LOGIN_AGAIN` error
 * or a `TOKEN_EXPIRED` error.
 *
 * This method is not supported on any {@link User} signed in by {@link Auth} instances
 * created with a {@link @firebase/app#FirebaseServerApp}.
 *
 * @param user - The user.
 * @param credential - The auth credential.
 *
 * @public
 */
export declare function reauthenticateWithCredential(user: User, credential: AuthCredential): Promise<UserCredential>;