perf: limit the cache number of resize observer with the length of items

wellyshen · May 30, 2021 · eaf35c9 · eaf35c9
1 parent 958b751
commit eaf35c9
Show file tree

Hide file tree

Showing 2 changed files with 6 additions and 1 deletion.
diff --git a/.changeset/twelve-roses-notice.md b/.changeset/twelve-roses-notice.md
@@ -0,0 +1,5 @@
+---
+"react-cool-virtual": patch
+---
+
+perf: limit the cache number of resize observers with the length of items
diff --git a/src/useVirtual.ts b/src/useVirtual.ts
@@ -302,7 +302,7 @@ export default <
     isScrollToItemRef.current = false;
     userScrollRef.current = true;
 
-    const len = rosRef.current.size - msDataRef.current.length;
+    const len = rosRef.current.size - items.length;
     const iter = rosRef.current[Symbol.iterator]();
     for (let i = 0; i < len; i += 1)
       rosRef.current.delete(iter.next().value[0]);