import { WebTokenManipulator } from './web-token-manipulator.js';
import { JwtTokenBase } from '@bitblit/ratchet-common/jwt/jwt-token-base';
export declare class GoogleWebTokenManipulator implements WebTokenManipulator<JwtTokenBase> {
    private clientId;
    private static readonly GOOGLE_DISCOVERY_DOCUMENT;
    private cacheGoogleDiscoveryDocument;
    private jwksClient;
    constructor(clientId: string);
    extractTokenFromAuthorizationHeader(authHeader: string): Promise<JwtTokenBase>;
    parseAndValidateGoogleToken(googleToken: string, allowExpired?: boolean): Promise<JwtTokenBase>;
    private fetchSigningKey;
    private fetchJwksClient;
    private fetchGoogleDiscoveryDocument;
}