chore: update

Author: linzhe141

packages/runtime-core/src/renderer.ts

@@ -1226,7 +1226,7 @@ function baseCreateRenderer(
       if (!initialVNode.el) {
         const placeholder = (instance.subTree = createVNode(Comment))
         processCommentNode(null, placeholder, container!, anchor)
-        initialVNode.el = placeholder.el
+        initialVNode.placeholderEl = placeholder.el
       }
     } else {
       setupRenderEffect(
@@ -1980,8 +1980,11 @@ function baseCreateRenderer(
       for (i = toBePatched - 1; i >= 0; i--) {
         const nextIndex = s2 + i
         const nextChild = c2[nextIndex] as VNode
+        const anchorVNode = c2[nextIndex + 1] as VNode
         const anchor =
-          nextIndex + 1 < l2 ? (c2[nextIndex + 1] as VNode).el : parentAnchor
+          nextIndex + 1 < l2
+            ? anchorVNode.el || anchorVNode.placeholderEl
+            : parentAnchor
         if (newIndexToOldIndexMap[i] === 0) {
           // mount new
           patch(

packages/runtime-core/src/vnode.ts

@@ -217,6 +217,11 @@ export interface VNode<
    */
   ssFallback: VNode | null
 
+  /**
+   * @internal
+   */
+  placeholderEl: HostNode | null
+
   // optimization only
   shapeFlag: number
   patchFlag: number
@@ -711,6 +716,8 @@ export function cloneVNode<T, U>(
     suspense: vnode.suspense,
     ssContent: vnode.ssContent && cloneVNode(vnode.ssContent),
     ssFallback: vnode.ssFallback && cloneVNode(vnode.ssFallback),
+    placeholderEl: vnode.placeholderEl,
+
     el: vnode.el,
     anchor: vnode.anchor,
     ctx: vnode.ctx,