fix(terminal): preserve UTF-8 replay chunks (#1181)

* fix(terminal): preserve UTF-8 replay chunks * fix(terminal): avoid replay trim prepends --------- Co-authored-by: Isaac Sanchez <isanchez-hawkins@arize.com>
2026-05-12 11:05:03 +03:00
parent 2a9c7e6bca
commit 323347f50e
2 changed files with 23 additions and 2 deletions
@@ -56,6 +56,15 @@ describe('terminal output replay buffer', () => {
    expect(bufferState.totalBytes).toBe(4);
  });

+  it('does not split multibyte characters when trimming oversized chunks', () => {
+    const bufferState = createTerminalOutputReplayBuffer();
+    const chunk = appendTerminalOutputReplayChunk(bufferState, '🙂x', 2);
+
+    expect(chunk?.data).toBe('x');
+    expect(chunk?.bytes).toBe(1);
+    expect(bufferState.totalBytes).toBe(1);
+  });
+
  it('uses the default max bytes when not provided', () => {
    const bufferState = createTerminalOutputReplayBuffer();
    const chunk = appendTerminalOutputReplayChunk(bufferState, 'ok');