From f0c22583713038caa89ea7f796c737ac0d4616b5 Mon Sep 17 00:00:00 2001
From: Yanzhen Yu <yanzhen@smartx.com>
Date: Wed, 1 Apr 2026 12:00:00 +0800
Subject: [PATCH] check events cursor before comparing timestamp

---
 src/replay/machine.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/replay/machine.ts b/src/replay/machine.ts
index 2dbab190..9a9d38fa 100644
--- a/src/replay/machine.ts
+++ b/src/replay/machine.ts
@@ -243,7 +243,7 @@ export function createPlayerService(
             addDelay(event, baselineTime);
 
             let end = events.length - 1;
-            if (events[end].timestamp <= event.timestamp) {
+            if (!events[end] || events[end].timestamp <= event.timestamp) {
               // fast track
               events.push(event);
             } else {