// Source: https://github.com/jserz/js_piece/blob/master/DOM/ParentNode/prepend()/prepend().md
(function(arr) {
    arr.forEach(function(item) {
        if (item.hasOwnProperty('prepend')) {
            return;
        }
        Object.defineProperty(item, 'prepend', {
            configurable: true,
            enumerable: true,
            writable: true,
            value: function prepend() {
                var argArr = Array.prototype.slice.call(arguments),
                    docFrag = document.createDocumentFragment();

                argArr.forEach(function(argItem) {
                    var isNode = argItem instanceof Node;
                    docFrag.appendChild(
                        isNode
                            ? argItem
                            : document.createTextNode(String(argItem))
                    );
                });

                this.insertBefore(docFrag, this.firstChild);
            }
        });
    });
})([Element.prototype, Document.prototype, DocumentFragment.prototype]);