The "no compiled binaries in git" describe block had two flaky tests:
- "git tracks no files larger than 2MB" timed out at 5s regularly because
it spawned one `sh -c` per tracked file via `xargs -I{}` (~571 shells
on every run, ~11s locally).
- "git tracks no Mach-O or ELF binaries" ran `file --mime-type` over every
tracked file (~3-10s, flaky near the timeout).
Both were pre-existing — not caused by any recent change — but showed up
as red in every local `bun test` run and masked legit failures in the
same suite.
Rewrites:
- 2MB test: `fs.statSync(f).size` in a filter. Millisecond-fast.
- Mach-O test: pre-filter to mode 100755 files via `git ls-files -s`,
then batch-invoke `file --mime-type` once across all executables.
With zero executables tracked, the `file` invocation is skipped.
Test suite: 320 pass, 0 fail, 907ms (was ~12.7s with 2 fails).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Garry Tan
b6be59ab75