perf(ui): optimizing virtual-scroll

DevCloudFE · Aug 9, 2022 · cce0e71 · cce0e71
1 parent 0a4c3a6
commit cce0e71
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/packages/ui/src/components/virtual-scroll/VirtualScroll.tsx b/packages/ui/src/components/virtual-scroll/VirtualScroll.tsx
@@ -183,7 +183,9 @@ function VirtualScroll<T>(props: DVirtualScrollProps<T>, ref: React.ForwardedRef
           key = dItemKey(item);
           size = getItemSize(item);
           nestedList = dItemNested?.(item)?.list;
-          childrenSize = itemsMap.get(key)!.nestedSize;
+          if (nestedList) {
+            childrenSize = itemsMap.get(key)!.nestedSize;
+          }
         }
 
         if (hasEnd) {