From 1fbebd3dff4aa3c59708068893041fc6ed137ba3 Mon Sep 17 00:00:00 2001
From: Ben Gotow <bengotow@gmail.com>
Date: Thu, 10 Sep 2015 10:11:24 -0700
Subject: [PATCH] fix(scroll-region): Handle edge case where React nodes are
 not available (Sentry 2763)

---
 src/components/scroll-region.cjsx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/components/scroll-region.cjsx b/src/components/scroll-region.cjsx
index 52a0731fd..85af8f453 100644
--- a/src/components/scroll-region.cjsx
+++ b/src/components/scroll-region.cjsx
@@ -50,6 +50,7 @@ class Scrollbar extends React.Component
   _recomputeDimensions: ({avoidForcingLayout}) =>
     if not avoidForcingLayout
       trackNode = React.findDOMNode(@refs.track)
+      return unless trackNode
       trackHeight = trackNode.clientHeight
       if trackHeight isnt @state.trackHeight
         @setState({trackHeight})
@@ -282,8 +283,9 @@ class ScrollRegion extends React.Component
 
   _recomputeDimensions: ({avoidForcingLayout}) =>
     return unless @refs.content
-
     contentNode = React.findDOMNode(@refs.content)
+    return unless contentNode
+
     viewportScrollTop = contentNode.scrollTop
 
     # While we're scrolling, calls to contentNode.scrollHeight / clientHeight