/// <reference types="node" />
import { Express } from 'express';
import { Server as HttpServer } from 'http';
export type Modifier = 'no-index' | 'single-page-application';
/**
 * Webdir wrapper for Express / HTTP Server
 */
export declare class Server {
    readonly dir: string;
    readonly host: string;
    readonly port: number;
    readonly modifier?: Modifier;
    /**
     * Express application
     */
    readonly app: Express;
    /**
     * Low-level HTTP server
     */
    readonly server: HttpServer;
    /**
     * Server initiation
     * @param dir path. Expected to be tested to actually be a directory
     * @param host IPv4 address, IPv6 address, domain name, or interface name
     * @param port numeric port for host
     * @param modifier special operation flags
     * @param startedCb 'listening' callback
     * @param errorCb 'error' callback
     * @param closeCb 'close' callback
     */
    constructor(dir: string, host: string, port: number, modifier?: Modifier, startedCb?: () => void, errorCb?: (err: Error) => void, closeCb?: () => void);
}