x = (true, '', 3);

var x1 = +1;
var x2 = -1;
var x3 = ~1;
var x4 = ! x1;
var x5 = typeof 1;
var x6 = delete x1;

var y1 = 1 + 3;
var y2 = 1  3;
var y3 = 1 / 3;
var y4 = 1 * 3;
var y5 = 1 % 3;
var y6 = y1 in Object;
var y7 = y1 instanceof Number;


@@ -134,16 +134,17 @@
  y2 = 1 
+-
  3;%0Avar 

Fix a typo