So siehts ganz gut aus !

node_modules/es5-ext/array/of/is-implemented.js

@@ -0,0 +1,8 @@
+"use strict";
+
+module.exports = function () {
+	var of = Array.of, result;
+	if (typeof of !== "function") return false;
+	result = of("foo", "bar");
+	return Boolean(result && (result[1] === "bar"));
+};