npm and error messages

node_modules/es5-ext/test/array/#/last.js

@@ -0,0 +1,15 @@
+"use strict";
+
+exports.__generic = function (t, a) {
+	a(t.call(this), this[this.length - 1]);
+};
+
+exports[""] = function (t, a) {
+	var x;
+	a(t.call([]), undefined, "Empty");
+	a(t.call(new Array(234), undefined, "Sparse empty"));
+	x = new Array(2342);
+	x[434] = {};
+	x[450] = {};
+	a(t.call(x), x[450], "Sparse");
+};