Replace the hand-rolled `AbortController` + `setTimeout(() => controller.abort())`
+ `clearTimeout` in `finally` pattern with `AbortSignal.timeout(ms)` across the
main-process fetchers, updaters, and hosted-provider clients. This removes a
timer-leak footgun (a thrown/early-returned path that skips the finally leaks the
timer) and ~3-4 lines of bookkeeping per site. `AbortSignal.timeout` is Node
17.3+ (Electron main is Node 22+).
Two sites compose a caller-cancel signal with the timeout via `AbortSignal.any`
(Node 20.3+) instead of a manual abort listener:
- git/fork-sync.ts: also fixes a latent bug — the caller's `options.signal` was
spread into the git options then immediately clobbered by `signal:
controller.signal`, so caller cancellation was silently dropped. `AbortSignal.any`
restores it.
- rate-limits/claude-fetcher.ts (fetchViaOAuth external signal).
hosted-review-api-request.ts: `AbortSignal.timeout()` rejects with a
`TimeoutError`, not an `AbortError`, so the timeout-detection branch is updated
(otherwise `timedOut` would never be set).
minimax-fetcher.test.ts: its timeout test drove the abort with fake timers, which
cannot advance `AbortSignal.timeout`'s internal timer. Rewritten to fire the
timeout with an already-aborted signal so it genuinely exercises the abort path.
Deliberately NOT migrated:
- src/relay/git-handler.ts: the relay targets Node 18 (`build-relay.mjs`,
MIN_NODE_MAJOR = 18); `AbortSignal.any` needs Node 20.3+, and timeout-only would
drop the request context signal.
- ipc/feedback.ts: its timeout-driven fallback is verified with fake timers, which
can't advance `AbortSignal.timeout`; kept on the manual pattern.
Neil
Trevin ChowandJinjing