FreeBSD and Android cross-target support expands publish images (
2ee9cad)
Bun’s release/build pipeline now supports x86_64 and aarch64 FreeBSD targets alongside Android, wiring in the needed sysroot, platform, and CI/build-script changes. This is a major infra update that unlocks new release artifacts and cross-compilation paths.
WebSocket clients now respect perMessageDeflate: false (
e2017e7)
The WebSocket upgrade path now suppresses Sec-WebSocket-Extensions when callers opt out of compression, matching Node and ws. This fixes a real compatibility gap for apps that rely on disabling permessage-deflate.
Bun.spawn fixes a stdin pipe leak on child exit (e356ed6)
If a spawned child exits before .stdin is ever read, Bun now closes the stdin pipe fd instead of leaving it dangling. That prevents resource leaks in cases where subprocess stdin is never consumed.
TTY restore no longer clobbers downstream raw mode (f97aa65)
Bun now skips exit-time tcsetattr restoration unless it actually modified termios itself, avoiding trampling a pipeline consumer’s terminal state. This fixes a nasty interactive bug where tools like less or fzf could appear frozen after Bun exited.
HTTP client response timeouts stop keeping the event loop alive (4c88df8)
IncomingMessage.setTimeout() on the client side now uses an unref’d timer and shares a module-scope handler instead of closing over request locals. That aligns Bun with Node behavior and fixes unnecessary hangs after responses complete.
Hot reload avoids stale sourcemaps during rejected-module races (
d644b47)
Bun now defers reloads not only while promises are pending, but also while a rejection exists that hasn’t been reported yet. This prevents hot-reload races from remapping errors against the wrong sourcemap or dropping the error entirely.
SQLite is bumped to 3.53.0 (d578f57)
Bun updates its bundled SQLite amalgamation to 3.53.0. This brings in upstream SQLite changes and fixes, though the repo-side impact is mostly dependency maintenance.
Spawn now downgrades JS refs after async pipe drains (9239913)
When stdout/stderr finishes draining after process exit, Bun now re-evaluates pending activity so subprocess wrappers can become collectible. This fixes a leak where subprocess objects and buffered output could stay strongly referenced forever.
Safer double-to-int conversions in buffer and histogram code (86e6ab6)
Several argument-parsing paths now use truncateDoubleTo* helpers instead of raw casts, avoiding undefined behavior on NaN, infinities, and out-of-range values. The arm64 codegen stays efficient while the conversions become well-defined.
Other misc changes
- Deflaked hot/inspect/terminal/spawn tests and other Windows/CI regressions.
- Fixed a module alias bug for
bun:mainand covered module-namespace edge cases. - Improved Buildkite flaky-test surfacing and a Windows PCH build rule.
- Updated the bundled sqlite amalgamation docs/comments and minor internal build wiring.