From 449097d0024e313fb40e40cfa466418db5330883 Mon Sep 17 00:00:00 2001
From: Glenn <ganderson@ondoher.com>
Date: Thu, 2 Mar 2017 13:56:16 -0800
Subject: [PATCH] fix(middleware): does not work with mootools

Change karma.js to check for own property during for...in loop
Because mootools adds functions to the array prototype,
the use of for..in will get more than the array elements.
---
 lib/middleware/karma.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/middleware/karma.js b/lib/middleware/karma.js
index 3392096bd..831668324 100644
--- a/lib/middleware/karma.js
+++ b/lib/middleware/karma.js
@@ -179,6 +179,10 @@ var createKarmaMiddleware = function (
             var filePath = file.path
             var fileExt = path.extname(filePath)
 
+            if (!files.included.hasOwnProperty(i)) {
+              continue
+            }
+
             if (!file.isUrl) {
               filePath = filePathToUrlPath(filePath, basePath, urlRoot, proxyPath)