/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import type { SixthUserInfo, SixthAuthConfig } from './sixthAuth.js';
export declare class SixthAuthServer {
    private server;
    private port;
    private config;
    constructor(config: SixthAuthConfig);
    /**
     * Start the callback server and return a promise that resolves with user info
     */
    startAndWaitForAuth(): Promise<SixthUserInfo>;
    private tryStartServer;
    private handleRequest;
    private validateToken;
    private sendSuccessPage;
    private sendErrorPage;
    getCallbackUrl(): string;
    stop(): void;
}