From 0278f9b9390625bf181f039205b2b34d94ee3836 Mon Sep 17 00:00:00 2001
From: lijianan <574980606@qq.com>
Date: Wed, 27 Jul 2022 22:23:17 +0800
Subject: [PATCH] fix: fix count don't work (#1784)

* fix: fix count
---
 packages/hooks/src/useMutationObserver/demo/demo1.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/hooks/src/useMutationObserver/demo/demo1.tsx b/packages/hooks/src/useMutationObserver/demo/demo1.tsx
index a157084ba1..d92a09933f 100644
--- a/packages/hooks/src/useMutationObserver/demo/demo1.tsx
+++ b/packages/hooks/src/useMutationObserver/demo/demo1.tsx
@@ -15,7 +15,7 @@ const App: React.FC = () => {
 
   useMutationObserver(
     (mutationsList) => {
-      mutationsList.forEach(() => setCount(count + 1));
+      mutationsList.forEach(() => setCount((c) => c + 1));
     },
     ref,
     { attributes: true },