So siehts ganz gut aus !

node_modules/es5-ext/object/assign/is-implemented.js

@@ -0,0 +1,9 @@
+"use strict";
+
+module.exports = function () {
+	var assign = Object.assign, obj;
+	if (typeof assign !== "function") return false;
+	obj = { foo: "raz" };
+	assign(obj, { bar: "dwa" }, { trzy: "trzy" });
+	return (obj.foo + obj.bar + obj.trzy) === "razdwatrzy";
+};