From 2cfd09ecdb75823c1b40e6a060a1da0e8da366f6 Mon Sep 17 00:00:00 2001
From: Nicolas Gallagher <nicolasgallagher@gmail.com>
Date: Mon, 27 Feb 2017 14:50:29 -0800
Subject: [PATCH] [fix] server-side rendering

e1fc253 added deferred image loading but didn't guard the
'requestIdleFallback' shim for use in Node.js

Fix #376
---
 src/modules/requestIdleCallback/index.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/modules/requestIdleCallback/index.js b/src/modules/requestIdleCallback/index.js
index b43c7ad4..03f0c64b 100644
--- a/src/modules/requestIdleCallback/index.js
+++ b/src/modules/requestIdleCallback/index.js
@@ -1,3 +1,6 @@
+/* global window */
+import { canUseDOM } from 'fbjs/lib/ExecutionEnvironment';
+
 const _requestIdleCallback = function (cb) {
   return setTimeout(() => {
     const start = Date.now();
@@ -14,8 +17,10 @@ const _cancelIdleCallback = function (id) {
   clearTimeout(id);
 };
 
-const requestIdleCallback = window.requestIdleCallback || _requestIdleCallback;
-const cancelIdleCallback = window.cancelIdleCallback || _cancelIdleCallback;
+const isSupported = canUseDOM && typeof window.requestIdleCallback !== 'undefined';
+
+const requestIdleCallback = isSupported ? window.requestIdleCallback : _requestIdleCallback;
+const cancelIdleCallback = isSupported ? window.cancelIdleCallback : _cancelIdleCallback;
 
 export default requestIdleCallback;
 export { cancelIdleCallback };