So siehts ganz gut aus !

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

@@ -0,0 +1,9 @@
+"use strict";
+
+module.exports = function () {
+	var from = Array.from, arr, result;
+	if (typeof from !== "function") return false;
+	arr = ["raz", "dwa"];
+	result = from(arr);
+	return Boolean(result && (result !== arr) && (result[1] === "dwa"));
+};