/// <reference types="node" />
/// <reference types="node" />
import http from "http";
import { Socket } from "net";
import { Application } from "express";
export type ServerDeps = {
    port: number;
    app: Application;
    log: (msg: string) => void;
    onError: (error: unknown) => void;
    onOpen: () => void;
    onClose: () => void;
};
/**
 * hacky - only used for testing.
 */
export declare class Server {
    private deps;
    server: http.Server;
    sockets: Set<Socket>;
    protected state: "opening" | "running" | "stopping" | "stopped";
    private waitingForSocketsToClose;
    private shutdownListener?;
    /**
     *
     */
    constructor(deps: ServerDeps);
    getState: () => "opening" | "running" | "stopping" | "stopped";
    /**
     * should wait for conformation
     */
    killIfRunning: () => Promise<void>;
    /**
     *
     */
    shutdown: () => Promise<void>;
    /**
     *
     */
    private shutdownReal;
    /**
     *
     */
    private onServerClose;
    /**
     *
     */
    private onSocketClose;
    /**
     *
     */
    private onActualClose;
}