From dc782096cbe5e30609ca0a089e50447255ca0169 Mon Sep 17 00:00:00 2001
From: Yanzhen Yu <yanzhen@smartx.com>
Date: Wed, 1 Apr 2026 12:00:00 +0800
Subject: [PATCH] close #319 handle undefined nextId Looks like some serializer
 will omit field with null value, so we do some checks in the replayer to
 avoid of dead loop.

---
 src/replay/index.ts | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/replay/index.ts b/src/replay/index.ts
index 1d45e53c..449a3189 100644
--- a/src/replay/index.ts
+++ b/src/replay/index.ts
@@ -817,7 +817,12 @@ export class Replayer {
         next = mirror.getNode(mutation.nextId) as Node;
       }
       // next not present at this moment
-      if (mutation.nextId !== null && mutation.nextId !== -1 && !next) {
+      if (
+        mutation.nextId !== null &&
+        mutation.nextId !== undefined &&
+        mutation.nextId !== -1 &&
+        !next
+      ) {
         return queue.push(mutation);
       }