Class inheritance sugar

main.js

// Pattern to avoid inheritance via prototype
var klass = function (Parent, props) {

    var Child, Proxy, i;

    Child = function () {

        if (Child.uber && Child.uber.hasOwnProperty("__construct")) { // Check if Child has own constructor in context of superclass
            Child.uber.__construct.apply(this, arguments);
        }
        if (Child.prototype.hasOwnProperty("__construct")) { // Check if Child has own constructor
            Child.prototype.__construct.apply(this, arguments);
        }

        Parent = Parent || Object;

        Proxy = function () {};
        Proxy.prototype = Parent.prototype; // Set Proxy
        Child.prototype = new Proxy(); // Inherit from Parent via Proxy
        Child.uber = Parent.prototype; // Allow access to Parent via superclass
        Child.prototype.constructor = Child; // Set Child constructor to point to itself

        for (i in props) {
            if (props.hasOwnProperty(i)) {
                Child.prototype[i] = props[i];
            }
        }

    };

    return Child;

};