From 11e655873dfa58b6edcda0113cee612f7a6b2ab9 Mon Sep 17 00:00:00 2001
From: hthief <vagrant85@gmail.com>
Date: Fri, 17 Jun 2016 12:15:20 +0100
Subject: [PATCH] Path implementation changed in node v6 to assert inputs as
 strings

---
 tasks/cssmin.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tasks/cssmin.js b/tasks/cssmin.js
index e0c07c3..354352e 100644
--- a/tasks/cssmin.js
+++ b/tasks/cssmin.js
@@ -38,7 +38,7 @@ module.exports = function (grunt) {
       var compiled = '';
 
       options.target = file.dest;
-      options.relativeTo = path.dirname(availableFiles[0]);
+      options.relativeTo = path.dirname(availableFiles[0] || '');
 
       try {
         compiled = new CleanCSS(options).minify(availableFiles);