From b54cdf8168fc224e9907796e4229ae8ed34e6885 Mon Sep 17 00:00:00 2001
From: xiguatoutou <71915952+TelenSo@users.noreply.github.com>
Date: Tue, 24 Mar 2026 01:14:15 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20prevent=20split=20on=20undefined?=
 =?UTF-8?q?=EF=BC=88#491=EF=BC=89=20(#563)?=
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---
 src/components/chat/tools/components/ToolDiffViewer.tsx | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/components/chat/tools/components/ToolDiffViewer.tsx b/src/components/chat/tools/components/ToolDiffViewer.tsx
index 8f43a395..3572807a 100644
--- a/src/components/chat/tools/components/ToolDiffViewer.tsx
+++ b/src/components/chat/tools/components/ToolDiffViewer.tsx
@@ -33,7 +33,12 @@ export const ToolDiffViewer: React.FC<ToolDiffViewerProps> = ({
     : 'bg-gray-100 dark:bg-gray-800 text-gray-500 dark:text-gray-400';
 
   const diffLines = useMemo(
-    () => createDiff(oldContent, newContent),
+    () => {
+      if (oldContent === undefined || newContent === undefined) {
+        return [];
+      }
+      return createDiff(oldContent, newContent)
+    },
     [createDiff, oldContent, newContent]
   );