Changelog

oven-sh/bun · · 25 commits

Bun fixes installs, watchers, and build speed

Installer hangs, macOS hot reload, Windows errors, and build system changes dominate a substantial day for Bun.

robobun Jarred-Sumner dylan-conway alii coleleavitt cirospaciari

Build system shifts vendored deps into the main graph (dylan-conwaycdd540b)

Bun’s build now compiles 12 vendored C/C++ dependencies as first-class ninja edges by default instead of routing them through nested CMake. That should improve parallelism, reduce configure overhead, and let LTO optimize across the dep boundary.

Installer no longer hangs on tarball download/extract failures (aliia4876cd, robobun249d76a)

bun install now cleans up dedupe/task-queue state when tarball downloads or extraction fail, so later retries can schedule a fresh network task instead of waiting forever. This fixes both HTTP error hangs and integrity-mismatch hangs in the isolated installer path.

macOS hot reload keeps propagating after file swaps (robobun6cecf48)

Watcher eviction now re-registers kqueue entries after swapRemove, fixing stale udata that could break subsequent updates to other imported files. The hot reloader also ignores out-of-range stale events, closing the loop on the macOS-only regression.

Windows libuv error translation stops panicking (robobun892042c, dylan-conwayf0498b7)

Bun hardened two Windows error paths: unmapped libuv codes now fall back to UNKNOWN, and Error.name() now passes the correctly negated errno into the translator. Together these fixes prevent invalid enum value/overflow panics when surfacing Windows filesystem errors.

Bun.serve() drops the undocumented inspector option (robobune194566)

The internal inspector: true server option and its WebSocket plumbing were removed from the public server config and implementation. This is a cleanup with API impact: debugger attachment should go through the CLI inspector flags instead.

Other misc changes

  • Bumped mimalloc to upstream v3.3.1 with fork-safety fixes.
  • Fixed bun test --changed to respect tsconfig path aliases over externalized packages.
  • Spawn stdio[N] now returns caller-supplied fds on POSIX, with updated typings.
  • Blob/FormData/expect/resolve/readable stream bug fixes.
  • Linux release binaries now strip .eh_frame_hdr too.
  • CI tweaks: cancel abandoned BuildKite builds, raise Linux link box, add slowest-test skill.
  • Misc test deflake / build cleanup / dependency version bumps.