From 4ebb3fffe9856d672a6254378f83da37e28ab13a Mon Sep 17 00:00:00 2001
From: Daniel Imms <2193314+Tyriar@users.noreply.github.com>
Date: Sat, 2 May 2026 06:21:42 -0700
Subject: [PATCH] Ignore cache keys in serialize addon

Bit hacky, but this is due to the way we're serializing the line in the test
---
 addons/addon-serialize/test/SerializeAddon.test.ts | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/addons/addon-serialize/test/SerializeAddon.test.ts b/addons/addon-serialize/test/SerializeAddon.test.ts
index ee5355fa6..fb42d807d 100644
--- a/addons/addon-serialize/test/SerializeAddon.test.ts
+++ b/addons/addon-serialize/test/SerializeAddon.test.ts
@@ -49,7 +49,14 @@ test.describe('SerializeAddon', () => {
         for (let i = 0; i < buffer.length; i++) {
           // Do this intentionally to get content of underlining source
           const bufferLine = buffer.getLine(i)._line;
-          lines.push(JSON.stringify(bufferLine));
+          lines.push(JSON.stringify(bufferLine, (key, value) => {
+            // BufferLine caches are internal/transient and can legitimately differ
+            // across equivalent terminal states.
+            if (key === '_stringCache' || key === '_stringCacheEntryRef') {
+              return undefined;
+            }
+            return value;
+          }));
         }
         return {
           x: buffer.cursorX,