From c82893be8abf6726b2e69b020f8248bffff88511 Mon Sep 17 00:00:00 2001
From: Christopher Chedeau <vjeux@fb.com>
Date: Tue, 31 Mar 2015 14:56:10 -0700
Subject: [PATCH] [ReactNative] Remove global MutationObserver to fix Bluebird
 feature detection

---
 .../Initialization/InitializeJavaScriptAppEngine.js           | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Libraries/JavaScriptAppEngine/Initialization/InitializeJavaScriptAppEngine.js b/Libraries/JavaScriptAppEngine/Initialization/InitializeJavaScriptAppEngine.js
index a9e06a6cf..51f6809cc 100644
--- a/Libraries/JavaScriptAppEngine/Initialization/InitializeJavaScriptAppEngine.js
+++ b/Libraries/JavaScriptAppEngine/Initialization/InitializeJavaScriptAppEngine.js
@@ -60,6 +60,10 @@ function setupDocumentShim() {
   if (GLOBAL.document) {
     GLOBAL.document.createElement = null;
   }
+
+  // There is no DOM so MutationObserver doesn't make sense. It is used
+  // as feature detection in Bluebird Promise implementation
+  GLOBAL.MutationObserver = undefined;
 }
 
 function handleErrorWithRedBox(e) {