declare module HTTP {
  interface HTTPRequest {
    content?: string;
    data?: any;
    query?: string;
    params?: { [id: string]: string };
    auth?: string;
    headers?: { [id: string]: string };
    timeout?: number;
    followRedirects?: boolean;
    npmRequestOptions?: Object;
  }

  interface HTTPResponse {
    statusCode?: number;
    headers?: { [id: string]: string };
    content?: string;
    data?: any;
  }

  function call(method: string, url: string, options?: HTTP.HTTPRequest, asyncCallback?: Function): HTTP.HTTPResponse;
  function del(url: string, callOptions?: HTTP.HTTPRequest, asyncCallback?: Function): HTTP.HTTPResponse;
  function get(url: string, callOptions?: HTTP.HTTPRequest, asyncCallback?: Function): HTTP.HTTPResponse;
  function post(url: string, callOptions?: HTTP.HTTPRequest, asyncCallback?: Function): HTTP.HTTPResponse;
  function put(url: string, callOptions?: HTTP.HTTPRequest, asyncCallback?: Function): HTTP.HTTPResponse;
  function call(method: string, url: string, options?: {
    content?: string;
    data?: Object;
    query?: string;
    params?: Object;
    auth?: string;
    headers?: Object;
    timeout?: number;
    followRedirects?: boolean;
    npmRequestOptions?: Object;
    beforeSend?: Function;
  }, asyncCallback?: Function): HTTP.HTTPResponse;
}