import * as jwt from 'jsonwebtoken';
import { Options } from 'jwks-rsa';
export declare class IonAuth {
    private client;
    private option;
    constructor(option?: Partial<Options>);
    verify(accessToken: string): Promise<string | jwt.JwtPayload>;
    private initJwksClient;
    private getPublicKey;
    private getKid;
}