So siehts ganz gut aus !

node_modules/es5-ext/test/date/valid-date.js

@@ -0,0 +1,14 @@
+"use strict";
+
+module.exports = function (t, a) {
+	var d = new Date();
+	a(t(d), d, "Date");
+	a.throws(function () {
+		t({});
+	}, "Object");
+	a.throws(function () {
+		t({ valueOf: function () {
+ return 20;
+} });
+	}, "Number object");
+};