augment.js

(function (global, factory) {
    if (typeof define === "function" && define.amd) define(factory);
    else if (typeof module === "object") module.exports = factory();
    else global.augment = factory();
}(this, function () {
    "use strict";

    var Factory = function () {};
    var slice = Array.prototype.slice;

    var augment = function (base, body) {
        var uber = Factory.prototype = typeof base === "function" ? base.prototype : base;
        var prototype = new Factory, properties = body.apply(prototype, slice.call(arguments, 2).concat(uber));
        if (typeof properties === "object") for (var key in properties) prototype[key] = properties[key];
        if (!prototype.hasOwnProperty("constructor")) return prototype;
        var constructor = prototype.constructor;
        constructor.prototype = prototype;
        return constructor;
    };

    augment.defclass = function (prototype) {
        var constructor = prototype.constructor;
        constructor.prototype = prototype;
        return constructor;
    };

    augment.extend = function (base, body) {
        return augment(base, function (uber) {
            this.uber = uber;
            return body;
        });
    };

    return augment;
}));