Files
openscreen/electron/preload.ts
T
neurot1cal f3c5b8a65d fix: harden streaming lifecycle and lift it out of the IPC god-module
Addresses the review feedback on #658 (CodeRabbit + Codex) and the
structural notes from the quality pass.

Correctness:
- Compute the recorder's streaming state at finalize time, not at
  construction. A stream that fails to open is now reported as
  not-streamed, so its buffered chunks are saved as a complete in-memory
  fallback instead of being dropped (was total data loss on open failure).
- Await every in-flight chunk write before onstop resolves, so the main
  process never closes the write stream while a final chunk is still in
  flight (was truncating the tail of a recording under load).
- Open the disk write stream by awaiting its 'open' event, so a bad path
  or permission error rejects up front instead of being acknowledged as
  success and then silently dropping bytes.
- Close the stream and remove the partial file when a streamed recording
  is discarded or fails, so cancelled/failed runs don't leak descriptors
  or orphan partial recordings.
- Surface a mid-stream write failure as a rejected recording rather than
  saving a silently truncated file.

Structure:
- Extract the streaming concern into electron/ipc/recordingStream.ts
  (RecordingStreamRegistry) and src/hooks/recorderHandle.ts, out of the
  2.8k-line handlers.ts and the screen-recorder hook.
- Key write streams by output file name, removing the implicit
  recordingId/+1 contract that spanned the IPC boundary.
- Collapse the duplicated screen/webcam finalize blocks into one helper
  and the repeated duration-validity guard into one check; patch the
  screen and webcam durations in parallel.

Adds unit tests for the registry (real temp-dir fs) and the recorder
handle state machine (open-failure fallback, in-order writes awaited
before stop, mid-stream failure). Extends the vitest include glob to
collect electron-side tests.

Verified: tsc --noEmit clean; biome clean; vitest 180/180.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-26 16:09:39 -07:00

9.7 KiB