Izmjenjena struktura, dodan backand

web/node_modules/es5-ext/object/valid-value.js

@@ -0,0 +1,8 @@
+"use strict";
+
+var isValue = require("./is-value");
+
+module.exports = function (value) {
+	if (!isValue(value)) throw new TypeError("Cannot use null or undefined");
+	return value;
+};