From b8f06c8aa41d7048897aefbd1f523a037b685ecb Mon Sep 17 00:00:00 2001
From: Haileyesus <something@gmail.com>
Date: Thu, 12 Feb 2026 20:55:22 +0300
Subject: [PATCH] refactor(createCachedDiffCalculator): use both newStr and
 oldStr as cache keys

---
 src/components/chat/utils/messageTransforms.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/components/chat/utils/messageTransforms.ts b/src/components/chat/utils/messageTransforms.ts
index 7093081..c2b6958 100644
--- a/src/components/chat/utils/messageTransforms.ts
+++ b/src/components/chat/utils/messageTransforms.ts
@@ -87,7 +87,7 @@ export const createCachedDiffCalculator = (): DiffCalculator => {
   const cache = new Map<string, DiffLine[]>();
 
   return (oldStr: string, newStr: string) => {
-    const key = `${oldStr.length}-${newStr.length}-${oldStr.slice(0, 50)}`;
+    const key = JSON.stringify([oldStr, newStr]);
     const cached = cache.get(key);
     if (cached) {
       return cached;