From efc9dc343cac7c2d301b9ba858a51e7ec522be30 Mon Sep 17 00:00:00 2001
From: 132yse <1533540012@qq.com>
Date: Tue, 31 Dec 2019 18:30:22 +0800
Subject: [PATCH] rollup requestAnimationFrame

---
 src/scheduler.js | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/src/scheduler.js b/src/scheduler.js
index d928f466..48f345dc 100644
--- a/src/scheduler.js
+++ b/src/scheduler.js
@@ -55,16 +55,9 @@ function flushWork() {
 
 export const planWork = (() => {
   if (typeof MessageChannel !== 'undefined') {
-    const channel = new MessageChannel()
-    return cb => {
-      if (cb) {
-        channel.port2.onmessage = cb
-        channel.port1.postMessage(null)
-      } else {
-        channel.port1.onmessage = flushWork
-        channel.port2.postMessage(null)
-      }
-    }
+    const { port1, port2 } = new MessageChannel()
+    port1.onmessage = flushWork
+    return cb => (cb ? requestAnimationFrame(cb) : port2.postMessage(null))
   }
   return cb => setTimeout(cb || flushWork)
 })()