added whole system from ola4doc

sys/node_modules/es5-ext/test/error/custom.js

@@ -0,0 +1,12 @@
+'use strict';
+
+module.exports = function (t, a) {
+	var T = t, err = new T('My Error', 'MY_ERROR', { errno: 123 });
+	a(err instanceof Error, true, "Instance of error");
+	a(err.constructor, Error, "Constructor");
+	a(err.name, 'Error', "Name");
+	a(String(err), 'Error: My Error', "String representation");
+	a(err.code, 'MY_ERROR', "Code");
+	a(err.errno, 123, "Errno");
+	a(typeof err.stack, 'string', "Stack trace");
+};