From 5b4e2be867ebf216e7acd0cfecda026d9dd3499d Mon Sep 17 00:00:00 2001
From: Josh Duck <josh@fb.com>
Date: Mon, 18 Aug 2014 16:47:44 -0700
Subject: [PATCH] Iterate over expectedFeatures correctly

This fails if Array.prototype is extended.
---
 src/browser/ui/React.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/browser/ui/React.js b/src/browser/ui/React.js
index 64143e32e8..f12ed7dbf5 100644
--- a/src/browser/ui/React.js
+++ b/src/browser/ui/React.js
@@ -130,7 +130,7 @@ if (__DEV__) {
       Object.freeze
     ];
 
-    for (var i in expectedFeatures) {
+    for (var i = 0; i < expectedFeatures.length; i++) {
       if (!expectedFeatures[i]) {
         console.error(
           'One or more ES5 shim/shams expected by React are not available: ' +