🔧 util._extend is deprecated, too

lib/browser/api/net.js

@@ -115,7 +115,7 @@ class ClientRequest extends EventEmitter {
     if (typeof options === 'string') {
       options = url.parse(options)
     } else {
-      options = util._extend({}, options)
+      options = Object.assign({}, options);
     }
 
     const method = (options.method || 'GET').toUpperCase()