Safely traverse through object

safeObj.js

function safeObj(obj) {
	return (function obj() {
		var args = Array.prototype.slice.call(arguments, 0);
		return (function __get(obj, args) {
			var key = args.shift();
			if(key !== undefined) return __get.call(this, obj[key] || { }, args);
			return obj;
		}).call(this, this, args);
	}).bind(obj || {});
}