npm and error messages

node_modules/es5-ext/iterable/validate-object.js

@@ -0,0 +1,9 @@
+"use strict";
+
+var isObject = require("../object/is-object")
+  , is       = require("./is");
+
+module.exports = function (value) {
+	if (is(value) && isObject(value)) return value;
+	throw new TypeError(value + " is not an iterable or array-like object");
+};