anchor.diff:      var y = 'undefined' === typeof y ? 0 : y;
       return x + y;
   };
  +__PS_MV_REG = [];
   return foo(1, 'y', 2);
   })();")
   
  
positive.code:     (alert (aref bar 1)))
    "function foo() {
      var bar = Array.prototype.slice.call(arguments, 0);
      return alert(bar[1]);
  };")
  
  
negative.code:         (set-state self (create x (+ offset 1))))))
    "function nextPage(self) {
      var object1 = self.state;
      __PS_MV_REG = [];
      return object1.count && object1.limit * object1.offset < object1.count ? setState(self, { x : object1.offset + 1 }) : null;
  };")
  
  