From 14c8d9709a5031737564cea31782dd94c4aadb22 Mon Sep 17 00:00:00 2001
From: coderaiser <mnemonic.enemy@gmail.com>
Date: Thu, 13 Nov 2014 06:22:39 -0500
Subject: [PATCH] feature(util) check: add indexOf undefined

---
 lib/util.js | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/lib/util.js b/lib/util.js
index 2a22cb55..11b2e2df 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -71,16 +71,22 @@
              */
             var check = function check(args, names) {
                 var msg         = '',
-                    template    = '',
                     name        = '',
+                    template    = '{{ name }} coud not be empty!',
+                    
+                    indexOf     = Array.prototype.indexOf,
                     
                     lenNames    = names.length,
                     lenArgs     = args.length,
-                    lessArgs    = lenArgs < lenNames;
+                    lessArgs    = lenArgs < lenNames,
+                    emptyIndex  = indexOf.call(args),
+                    isEmpty     = ~emptyIndex;
                 
-                if (lessArgs) {
-                    template    = '{{ name }} coud not be empty!';
-                    name        = names[lenNames - 1];
+                if (lessArgs || isEmpty) {
+                    if (lessArgs)
+                        name        = names[lenNames - 1];
+                    else
+                        name        = names[emptyIndex];
                     
                     msg         = Util.render(template, {
                         name: name