/// <reference types="node" />
import http from 'http';
import { WonWebSocketServer } from '../_won_modules/won-node-framework';
import { WonServer } from '../_won_modules/won-node-framework';
export declare class ExpressServer implements WonServer {
    private _webSocketServer;
    private _wonlogExpressApp;
    private readonly host;
    private readonly port;
    private _httpServer;
    constructor(host: string, port: number);
    get httpServer(): http.Server | null;
    boot(): void;
    start(): void;
    stop(): void;
    private initialize;
    setWebSocketServer(webSocketServer: WonWebSocketServer): void;
}