Inheritance helper

inherits.js

/**
 * @param {Function} NewClass
 * @param {Function} SuperClass
 * 
 * @example
 *   function Foo() {}
 *   function Bar() { Foo.call(this); }
 *   inherits(Bar, Foo);
 */
var inherits = function (NewClass, SuperClass, attributes) {
	var prototype = SuperClass.prototype,
		childPrototype = Object.create(prototype);

	Object.keys(attributes).forEach(function (key) {
		childPrototype[key] = attributes[key];
	});

	NewClass.prototype = childPrototype;
	NewClass.prototype.constructor = NewClass;
};