import type { WebSocketServer } from 'ws';
import { ServerAdapter } from './ServerAdapter';
import { ServerController } from '../ServerController';
export declare class WebSocketServerAdapter extends ServerAdapter {
    readonly wss: WebSocketServer;
    private pingInterval;
    private pingTimer;
    constructor(wss: WebSocketServer);
    close(): Promise<void>;
    setServerController(controller: ServerController): void;
    private init;
    private listenOnConnect;
    private initHeartbeat;
    private ping;
    private heartbeat;
    private addSetHttpCookieHandler;
}
declare module 'ws' {
    interface WebSocket {
        isAlive?: boolean;
    }
}