/**
 * Sweetlink Auto-Start
 *
 * Zero-config Sweetlink server that works with any Node.js app.
 * Just import this module in development to start the server automatically.
 *
 * Usage:
 * ```typescript
 * // At the top of your server entry file
 * import '@ytspar/sweetlink/auto';
 * ```
 *
 * Or with explicit configuration:
 * ```typescript
 * import { startSweetlink } from '@ytspar/sweetlink/auto';
 * startSweetlink({ appPort: 3000 });
 * ```
 *
 * Port Calculation:
 * - Reads app port from process.env.PORT (default: 3000)
 * - WebSocket port = app port + 6223 (matches devbar's calculation)
 * - Example: app on 3000 → Sweetlink on 9223
 */
export interface AutoStartOptions {
    /**
     * Your app's HTTP port. If not specified, reads from process.env.PORT
     * or defaults to 3000.
     */
    appPort?: number;
    /**
     * WebSocket server port. If not specified, calculated as appPort + 6223.
     */
    wsPort?: number;
    /**
     * Only start in development mode. Default: true
     */
    devOnly?: boolean;
}
/**
 * Start Sweetlink server with automatic port configuration.
 *
 * @example
 * // Auto-detect port from process.env.PORT
 * startSweetlink();
 *
 * @example
 * // Explicit app port
 * startSweetlink({ appPort: 3000 });
 */
export declare function startSweetlink(options?: AutoStartOptions): void;
/**
 * Stop the Sweetlink server
 */
export declare function stopSweetlink(): Promise<void>;
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