Constructor-less inheritance for ECMAScript 5

create.js

var BaseObject = {
    create: function create() {
       var instance = Object.create(this);
       instance._construct.apply(instance, arguments);
       return instance;
    },

    extend: function extend(properties, propertyDescriptors) {
        propertyDescriptors = propertyDescriptors || {};

        if(properties){
            var simpleProperties = Object.getOwnPropertyNames(properties);
            for (var i = 0, len = simpleProperties.length; i < len; i += 1) {
                var propertyName = simpleProperties[i];
                if(propertyDescriptors.hasOwnProperty(propertyName)) {
                    continue;
                }

                propertyDescriptors[propertyName] =
                    Object.getOwnPropertyDescriptor(properties, propertyName);
            }
        }

        return Object.create(this, propertyDescriptors);
    },

    _construct: function _construct() {},

    _super: function _super(definedOn, methodName, args) {
        if (typeof methodName !== "string") {
            args = methodName;
            methodName = "_construct";
        }

        return Object.getPrototypeOf(definedOn)[methodName].apply(this, args);
    }
};