/// <reference types="node" />
import { ServerResponse } from 'http';
/**
 * Http error class.
 */
export declare class HttpError extends Error {
    /**
     * Stores the HTTP response message.
     */
    message: string;
    /**
     * Stores the HTTP response status code.
     */
    code: number;
    /**
     * HttpError class constructor.
     *
     * @param   message  The response message.
     * @param   code     The response status code.
     */
    constructor(message: string, code: number);
    /**
     * Method for responding HTTP request with standard error.
     *
     * @param   res     The server response instance.
     * @param   isJson  If the response content is JSON.
     * @returns The server response.
     */
    respond<RES extends ServerResponse = ServerResponse>(res: ServerResponse, isJson: boolean): RES;
}