From 8278b63f0a7d8d500f38b44693955d3d4505f9d7 Mon Sep 17 00:00:00 2001
From: Yun Feng <yun.feng@anu.edu.au>
Date: Wed, 1 Apr 2026 12:00:00 +0800
Subject: [PATCH] add special handling for undefined console content (#935)

---
 packages/rrweb/src/plugins/console/record/stringify.ts | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/packages/rrweb/src/plugins/console/record/stringify.ts b/packages/rrweb/src/plugins/console/record/stringify.ts
index e15cf9d0..bbe10908 100644
--- a/packages/rrweb/src/plugins/console/record/stringify.ts
+++ b/packages/rrweb/src/plugins/console/record/stringify.ts
@@ -117,9 +117,8 @@ export function stringify(
       }
       /* END of the FORK */
 
-      if (value === null || value === undefined) {
-        return value;
-      }
+      if (value === null) return value;
+      if (value === undefined) return 'undefined';
       if (shouldIgnore(value as object)) {
         return toString(value as object);
       }