ES5 Extend & Clone Objects

ES5 Extend & Clone Objects.js

Object.defineProperties(Object, {
    'extend': {
        'configurable': true,
        'enumerable': false,
        'value': function extend(what, wit) {
            var extObj, witKeys = Object.keys(wit);

            extObj = Object.keys(what).length ? Object.clone(what) : {};

            witKeys.forEach(function (key) {
                Object.defineProperty(extObj, key, Object.getOwnPropertyDescriptor(wit, key));
            });

            return extObj;
        },
        'writable': true
    },
    'clone': {
        'configurable': true,
        'enumerable': false,
        'value': function clone(obj) {
            return Object.extend({}, obj);
        },
        'writable': true
    }
});