import { Credential } from '../auth/credential.js';
import { VerifyOptions } from '../auth/types.js';
import { DecodedAppCheckToken } from './types.js';
export declare class AppCheckTokenVerifier {
    private readonly credential;
    private readonly signatureVerifier;
    constructor(credential: Credential);
    verifyToken(token: string, options: VerifyOptions): Promise<DecodedAppCheckToken>;
    private decodeAndVerify;
    private verifyContent;
    private verifySignature;
    private mapJwtErrorToAppCheckError;
}