From 4a4670bdce9e1043348fd741ec7a262ba2413a3a Mon Sep 17 00:00:00 2001
From: tangjinzhou <415800467@qq.com>
Date: Wed, 6 Apr 2022 15:53:09 +0800
Subject: [PATCH] fix: virtual list not update height for dynamic data

---
 components/vc-virtual-list/hooks/useHeights.tsx | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/components/vc-virtual-list/hooks/useHeights.tsx b/components/vc-virtual-list/hooks/useHeights.tsx
index 634afc293..8cf6e69eb 100644
--- a/components/vc-virtual-list/hooks/useHeights.tsx
+++ b/components/vc-virtual-list/hooks/useHeights.tsx
@@ -11,10 +11,9 @@ export default function useHeights<T>(
   onItemRemove?: ((item: T) => void) | null,
 ): [(item: T, instance: HTMLElement) => void, () => void, CacheMap, Ref<Symbol>] {
   const instance = new Map<VNodeProps['key'], HTMLElement>();
-  let heights = new Map();
+  const heights = new Map();
   const updatedMark = ref(Symbol('update'));
   watch(mergedData, () => {
-    heights = new Map();
     updatedMark.value = Symbol('update');
   });
   let heightUpdateId = 0;