import { EventEmitter } from 'events';
import { SecureContextOptions } from 'tls';
import { INestApplication } from '@nestjs/common';
/**
 * **⚠ DISCLAIMER: For local development use only! ⚠**
 *
 * This is intended only for local development, testing, and troubleshooting.
 * It is not recommended to use this in any production context or public-facing environment.
 *
 * @fires LocalHttpsProxy#listening when when the encapsulated {@link https.Server} successfully binds to a port and begins listening for connections.
 * @fires LocalHttpsProxy#error for any error condition which occurs after initialization of the LocalHttpsProxy instance.
 */
export declare class LocalHttpsProxy extends EventEmitter implements LocalHttpsProxy {
    private readonly httpsProxyServer;
    /**
     * @param nestApp NestJS application instance.
     * @param httpsOptions Accepts {@link https.createServer}(`options`: {@link SecureContextOptions}) parameter from `node:https`. Object _must_ include `cert` and `key` properties.
     * @param errorCallback Optional: Callback function called when any error condition occurs within the LocalHttpsProxy instance.
     * @param listeningCallback Optional: Callback function called when the encapsulated {@link https.Server} successfully binds to a port and begins listening for connections.
     * @throws When initialization of {@link https.Server} fails.
     */
    constructor(nestApp: INestApplication, httpsOptions: SecureContextOptions, errorCallback?: (error: Error) => void, listeningCallback?: (port: number) => void);
    /**
     * Start LocalHttpsProxy instance.
     * @param listeningPort Optional: Port on which to listen for HTTPS connections, if not provided then an open port will be automatically assigned.
     * @example <caption>Start a local HTTPS proxy listening on `0.0.0.0:43000`, proxying requests to your Nest app's HTTP server:</caption>
     * const localHttpsProxy = new LocalHttpsProxy(app, httpsOptions);
     * localHttpsProxy.start(43000);
     */
    start(listeningPort?: number): void;
    /**
     * Stop LocalHttpsProxy and close all open connections.
     */
    close(): void;
    /**
     * Initialize private encapsulated instance of `https.Server`.
     * @param httpsOptions Options used during `https.Server` initialization.
     * @param nestApp NestJS application instance.
     * @returns New {@link https.Server} instance configured using {@link httpsOptions}.
     */
    private initHttpsServer;
    /**
     * Derive the requestListener from the HTTP server in the Nest Application instance.
     * @param nestApp NestJS application instance.
     * @returns requestListener from the HTTP server within Nest Application, or undefined if unavailable.
     */
    private getNestAppRequestListener;
    private onError;
    private onListening;
}
export declare interface LocalHttpsProxy {
    /**
     * Emitted when the encapsulated {@link https.Server} successfully binds to a port and begins listening for connections.
     */
    on(event: 'listening', listener: (port: number) => void): this;
    /**
     * Emitted for any error condition which occurs within the LocalHttpsProxy instance.
     */
    on(event: 'error', listener: (error: Error) => void): this;
}