From b9461b0302fdaa334a4cf214d1c476267c1aafe1 Mon Sep 17 00:00:00 2001
From: Oscar Perez <p.oscar@gmail.com>
Date: Wed, 23 Mar 2016 16:22:39 -0400
Subject: [PATCH] Fixed setting module.exports when it does not exist (e.g.
 when using this in IE10).

---
 index.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 0b1547f..b20c2d8 100644
--- a/index.js
+++ b/index.js
@@ -582,4 +582,6 @@ if (!MutationObserver) {
   MutationObserver = JsMutationObserver;
 }
 
-module.exports = MutationObserver;
+if (typeof module !== 'undefined') {
+  module.exports = MutationObserver;
+}