The Tor Browser / file revision

 /*

  * Call the trap with the handler as the this value, the target as the first

  * argument, the original this value as the second argument, and the original

  * arguments as the third argument.

  */

 var target = function () {};

 var receiver = {};

 var handler = {

     apply: function (target1, receiver1, args) {

         assertEq(this, handler);

         assertEq(target1, target);

         assertEq(receiver1, receiver);

         assertEq(args.length, 2);

         assertEq(args[0], 2);

         assertEq(args[1], 3);

     }

 }

 new Proxy(target, handler).call(receiver, 2, 3);