import { ConfigService } from '@sierralabs/nest-utils';
import { JwtPayload, JwtToken } from '.';
import { TokenPayload } from 'google-auth-library/build/src/auth/loginticket';
/**
 * Provides an authentication service for creating JWT access token.
 */
export declare class AuthService<T> {
    private readonly configService;
    private logger;
    private defaultExpiration;
    private secret;
    private googleAuthClientID;
    private googleClient;
    constructor(configService: ConfigService);
    /**
     * Create a JWT access token.
     * @param userId The unique user ID of the current logged in user.
     * @param email The email address of the current logged in user.
     */
    createToken(userId: number, email: string): JwtToken<T>;
    createToken(payload: JwtPayload, expiresIn?: string): JwtToken<T>;
    verifyToken(token: string): JwtPayload;
    verifyGoogleAuthToken(token: string): Promise<TokenPayload>;
}