From 4c0ced2ba186c5847119ea3371c94348e639e7d4 Mon Sep 17 00:00:00 2001
From: Yanzhen Yu <yanzhen@smartx.com>
Date: Wed, 1 Apr 2026 12:00:00 +0800
Subject: [PATCH] fix the add node condition

---
 src/replay/index.ts | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/src/replay/index.ts b/src/replay/index.ts
index 296c62ea..fd922e43 100644
--- a/src/replay/index.ts
+++ b/src/replay/index.ts
@@ -224,16 +224,19 @@ export class Replayer {
             true,
           ) as Node;
           const parent = (mirror.getNode(mutation.parentId) as Node) as Element;
+          let previous: Node | null = null;
+          let next: Node | null = null;
           if (mutation.previousId) {
-            const previous = mirror.getNode(mutation.previousId) as Node;
-            if (previous) {
-              parent.insertBefore(target, previous.nextSibling);
-            }
-          } else if (mutation.nextId) {
-            const next = mirror.getNode(mutation.nextId) as Node;
-            if (next) {
-              parent.insertBefore(target, next);
-            }
+            previous = mirror.getNode(mutation.previousId) as Node;
+          }
+          if (mutation.nextId) {
+            next = mirror.getNode(mutation.nextId) as Node;
+          }
+
+          if (previous && previous.nextSibling) {
+            parent.insertBefore(target, previous.nextSibling);
+          } else if (next) {
+            parent.insertBefore(target, next);
           } else {
             parent.appendChild(target);
           }