From 5d16ba8056c5163c89df3f60406a75dc1e5f4d7d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=BA=8C=E8=B4=A7=E7=88=B1=E5=90=83=E7=99=BD=E8=90=9D?=
 =?UTF-8?q?=E5=8D=9C?= <smith3816@gmail.com>
Date: Thu, 16 Jan 2025 15:19:57 +0800
Subject: [PATCH] fix: trigger only when changed (#299)

---
 src/hooks/useHeights.tsx | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/hooks/useHeights.tsx b/src/hooks/useHeights.tsx
index b4c6955..bea8a05 100644
--- a/src/hooks/useHeights.tsx
+++ b/src/hooks/useHeights.tsx
@@ -33,6 +33,8 @@ export default function useHeights<T>(
     cancelRaf();
 
     const doCollect = () => {
+      let changed = false;
+
       instanceRef.current.forEach((element, key) => {
         if (element && element.offsetParent) {
           const htmlElement = findDOMNode<HTMLElement>(element);
@@ -45,12 +47,15 @@ export default function useHeights<T>(
 
           if (heightsRef.current.get(key) !== totalHeight) {
             heightsRef.current.set(key, totalHeight);
+            changed = true;
           }
         }
       });
 
       // Always trigger update mark to tell parent that should re-calculate heights when resized
-      setUpdatedMark((c) => c + 1);
+      if (changed) {
+        setUpdatedMark((c) => c + 1);
+      }
     };
 
     if (sync) {