import { APIGatewayEvent } from 'aws-lambda';
import { CommonJwtToken } from '@bitblit/ratchet/dist/common/common-jwt-token';
import { WebTokenManipulator } from './web-token-manipulator';
export declare class GoogleWebTokenManipulator implements WebTokenManipulator {
    private clientId;
    private static readonly GOOGLE_DISCOVERY_DOCUMENT;
    private cacheGoogleDiscoveryDocument;
    private jwksClient;
    constructor(clientId: string);
    extractTokenFromStandardEvent<T>(event: APIGatewayEvent): Promise<CommonJwtToken<T>>;
    parseAndValidateGoogleToken<T>(googleToken: string, allowExpired?: boolean): Promise<CommonJwtToken<T>>;
    private fetchSigningKey;
    private fetchJwksClient;
    private fetchGoogleDiscoveryDocument;
}