So siehts ganz gut aus !

node_modules/es5-ext/test/object/ensure-integer.js

@@ -0,0 +1,42 @@
+"use strict";
+
+module.exports = function (t, a) {
+	a.throws(
+		function () {
+			t(undefined);
+		},
+		TypeError,
+		"Undefined"
+	);
+	a.throws(
+		function () {
+			t(null);
+		},
+		TypeError,
+		"Null"
+	);
+	a(t(2), 2, "Number");
+	a(t(-2), -2, "Negative");
+	a.throws(
+		function () {
+			t(2.34);
+		},
+		TypeError,
+		"Float"
+	);
+	a(t("23"), 23, "Numeric string");
+	a.throws(
+		function () {
+			t(NaN);
+		},
+		TypeError,
+		"NaN"
+	);
+	a.throws(
+		function () {
+			t(Infinity);
+		},
+		TypeError,
+		"Infinity"
+	);
+};