x.js

x.js

// create a number type
hug('type')('number');

// set the constructor
hug('type')('number')('#set')('init', function($self, num) {
	$self('#set')('#value', isNaN(Number(num)) ? 0 : Number(num));
});

// methods...
hug('type')('number')('#set')('+', function($self, $rest) {	
	var num = $rest.reduce(function(memo, current) {			
		return memo + current('#value');
	}, $self());
	
	return $self('#type')()('#new')(num);
});

// shortcut
var number = hug('type')('number');

var one = number('#new')(1);	
var two = number('#new')(2);
var three = number('#new')(3);

var six = one('+', two, three);
var twelve = one('+', one, one, one, one, one, six);
six(); // 6
twelve(); //12