/**
 * @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 { AuthProvider } from '../../model/public_types';
import { EmailAuthCredential } from '../credentials/email';
/**
 * Provider for generating {@link EmailAuthCredential}.
 *
 * @public
 */
export declare class EmailAuthProvider implements AuthProvider {
    /**
     * Always set to {@link ProviderId}.PASSWORD, even for email link.
     */
    static readonly PROVIDER_ID: 'password';
    /**
     * Always set to {@link SignInMethod}.EMAIL_PASSWORD.
     */
    static readonly EMAIL_PASSWORD_SIGN_IN_METHOD: 'password';
    /**
     * Always set to {@link SignInMethod}.EMAIL_LINK.
     */
    static readonly EMAIL_LINK_SIGN_IN_METHOD: 'emailLink';
    /**
     * Always set to {@link ProviderId}.PASSWORD, even for email link.
     */
    readonly providerId: "password";
    /**
     * Initialize an {@link AuthCredential} using an email and password.
     *
     * @example
     * ```javascript
     * const authCredential = EmailAuthProvider.credential(email, password);
     * const userCredential = await signInWithCredential(auth, authCredential);
     * ```
     *
     * @example
     * ```javascript
     * const userCredential = await signInWithEmailAndPassword(auth, email, password);
     * ```
     *
     * @param email - Email address.
     * @param password - User account password.
     * @returns The auth provider credential.
     */
    static credential(email: string, password: string): EmailAuthCredential;
    /**
     * Initialize an {@link AuthCredential} using an email and an email link after a sign in with
     * email link operation.
     *
     * @example
     * ```javascript
     * const authCredential = EmailAuthProvider.credentialWithLink(auth, email, emailLink);
     * const userCredential = await signInWithCredential(auth, authCredential);
     * ```
     *
     * @example
     * ```javascript
     * await sendSignInLinkToEmail(auth, email);
     * // Obtain emailLink from user.
     * const userCredential = await signInWithEmailLink(auth, email, emailLink);
     * ```
     *
     * @param auth - The {@link Auth} instance used to verify the link.
     * @param email - Email address.
     * @param emailLink - Sign-in email link.
     * @returns - The auth provider credential.
     */
    static credentialWithLink(email: string, emailLink: string): EmailAuthCredential;
}