/// <reference types="node" />
import { Logger } from '@cirrusct/logging';
import { WebServerStartupOptions, HttpServerInstances, HttpServerInstance, Polka } from './types';
import { ServerOptions as HttpsServerOptions } from 'https';
export declare class HttpServerInstanceManager {
    private polka;
    private startupConfig;
    private logger;
    private httpsOptions?;
    private _eventEmitter;
    private _instances;
    constructor(polka: Polka, startupConfig: WebServerStartupOptions, logger: Logger, httpsOptions?: HttpsServerOptions);
    get instances(): HttpServerInstances;
    private createServer;
    private initInstances;
    start(): void;
    private emitOnListening;
    onListening: (listener: (instance: HttpServerInstance<import("./types").HttpServer>) => void) => void;
}