type OAuth2ErrorType = 'invalid_request' | 'invalid_client' | 'invalid_grant' | 'invalid_token' | 'invalid_scope' | 'unauthorized_client' | 'unsupported_grant_type' | 'unsupported_response_type' | 'insufficient_scope' | 'redirect_uri_mismatch' | 'access_denied' | 'server_error' | 'temporarily_unavailable' | (string & {});
declare class OAuth2Error extends Error {
    readonly status: number;
    readonly error: OAuth2ErrorType;
    constructor(status: number, error: OAuth2ErrorType, message?: string);
}
declare class AuthenticationError extends Error {
    constructor(message: string);
}

export { AuthenticationError, OAuth2Error, type OAuth2ErrorType };