"use strict"

Testing "use strict" environment

JavaScript

window.log=function(){log.history=log.history||[];log.history.push(arguments);if(this.console){console.log(Array.prototype.slice.call(arguments))}};

(function() {

if (true) {
  var x = 2;

  console.log(x);
  // expected output: 2
}

console.log(x);
// expected output: 2

})();