So siehts ganz gut aus !

node_modules/es5-ext/array/_sub-array-dummy-safe.js

@@ -0,0 +1,25 @@
+"use strict";
+
+var setPrototypeOf = require("../object/set-prototype-of")
+  , isExtensible   = require("./_is-extensible");
+
+module.exports = (function () {
+	var SubArray;
+
+	if (isExtensible) return require("./_sub-array-dummy");
+
+	if (!setPrototypeOf) return null;
+	SubArray = function () {
+		var arr = Array.apply(this, arguments);
+		setPrototypeOf(arr, SubArray.prototype);
+		return arr;
+	};
+	setPrototypeOf(SubArray, Array);
+	SubArray.prototype = Object.create(Array.prototype, {
+		constructor: { value: SubArray,
+enumerable: false,
+writable: true,
+			configurable: true }
+	});
+	return SubArray;
+}());