==== simple
var x={a:1,b:2}
==
var x = { a: 1, b: 2 }
==== functions
var x={a:1,calc:function(){return 1;}}
==
var x = {
		a: 1,
		calc: function () {
			return 1;
		}
	}
==== getter
var x={a:1,get x(){return 1;}}
==
var x = {
		a: 1,
		get x () {
			return 1;
		}
	}
==== setter
var x={a:1,set x(value){return 1;}}
==
var x = {
		a: 1,
		set x (value) {
			return 1;
		}
	}
====
