npm and error messages

node_modules/es5-ext/test/function/#/copy.js

@@ -0,0 +1,22 @@
+"use strict";
+
+module.exports = function (t, a) {
+	var foo = "raz", bar = "dwa";
+	// eslint-disable-next-line func-names
+	var fn = function marko(a, b) {
+		return this + a + b + foo + bar;
+	};
+	var result, o = {};
+
+	fn.prototype = o;
+
+	fn.foo = "raz";
+
+	result = t.call(fn);
+
+	a(result.length, fn.length, "Length");
+	a(result.name, fn.name, "Length");
+	a(result.call("marko", "el", "fe"), "markoelferazdwa", "Body");
+	a(result.prototype, fn.prototype, "Prototype");
+	a(result.foo, fn.foo, "Custom property");
+};