So siehts ganz gut aus !

node_modules/es5-ext/test/object/first-key.js

@@ -0,0 +1,13 @@
+"use strict";
+
+module.exports = function (t, a) {
+	var x = {}, y = Object.create(null);
+	a(t(x), null, "Normal: Empty");
+	a(t(y), null, "Null extension: Empty");
+	x.foo = "raz";
+	x.bar = 343;
+	a(["foo", "bar"].indexOf(t(x)) !== -1, true, "Normal");
+	y.elo = "foo";
+	y.mar = "wew";
+	a(["elo", "mar"].indexOf(t(y)) !== -1, true, "Null extension");
+};