fix: require URL from 'url' module (#1809)

closes #1808

Author: fengmk2

lib/response.js

@@ -19,6 +19,7 @@ const only = require('only');
 const util = require('util');
 const encodeUrl = require('encodeurl');
 const Stream = require('stream');
+const URL = require('url').URL;
 
 /**
  * Prototype.