From a2055f9d3e6bdf0f4943d11247d9ba8707855adc Mon Sep 17 00:00:00 2001
From: Ilya Grigorik <ilya@igvita.com>
Date: Thu, 9 Jun 2016 18:22:53 -0400
Subject: [PATCH] check typeof node in MutationObserver

---
 inject.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/inject.js b/inject.js
index 81ce855..b6f2486 100644
--- a/inject.js
+++ b/inject.js
@@ -180,7 +180,10 @@ chrome.extension.sendMessage({}, function(response) {
       }
       var observer = new MutationObserver(function(mutations) {
         mutations.forEach(function(mutation) {
-          forEach.call(mutation.addedNodes, function(node) {
+          mutation.addedNodes.forEach(node => {
+            if (typeof node === "function")
+              return;
+
             checkForVideo(node, node.parentNode || mutation.target);
           })
         });