text: // @allowUnreachableCode: true
  //Comma operator in for loop
  for(var i = 0, j = 10; i < j; i++, j--){}
  //Comma operator in function arguments and return
  function foo(x, y) {
      return x, y;
  }
  var resultIsString = foo(1, "123");
  //TypeParameters
  function foo1() {
      var x;
      var y;
      x, y;
      var resultIsT1 = (y, x);
  }
  