GC tick now backs off under idle timer chatter (
b7ea95a)
Bun’s idle GC cadence now scales its “has the heap really grown?” slack with the timer interval instead of using a fixed 2 MB threshold. That lets timer-heavy parked apps escape the 1 s tick and fall back to the slower cadence instead of burning CPU on pointless collections.
Event loop tasks are split into per-callback types (
36aad18)
ManagedTask is removed and each of its 19 users now has its own Taskable type. The refactor trims allocations and indirect calls from event-loop dispatch, and it also changes ownership/lifetime handling for bundle parse results and similar callbacks.
Fetch now surfaces abort reasons to native body readers (
6cbf919)
When a fetch() body is aborted, native consumers of res.body now receive the original signal.reason instead of a generic empty/late-abort outcome. The fix updates the stream plumbing for byte streams and file readers so aborted native readers fail consistently with JS readers and Node.
Locked readable-stream errors regain ERR_INVALID_STATE (30787eb)
cancel(), pipeTo() and pipeThrough() on locked streams now attach code: 'ERR_INVALID_STATE' again. This restores Node-compatible error shape after the C++ streams rewrite removed it.
TLS clients reject bad chains before sending client certs (effdc9a)
fetch, Bun.SQL, Bun.RedisClient and WebSocket clients now apply rejectUnauthorized during handshake setup instead of after the handshake completes. That prevents mTLS client certificates from being sent to servers whose chains fail verification.
Accepted TLS sockets now close correctly after a reset (d34421a)
node:net now fails a parked write when the socket is already closed, even if the native close arrived without an error. This fixes accepted sockets that could previously get stuck after a peer reset, with no 'close' event and a server that never finished shutting down.
WebSocket renegotiation uses the original verified hostname (6683f74)
TLS WebSockets now remember the hostname verified during upgrade and re-check against that value on renegotiation. That fixes IP-address WebSocket connections being dropped on TLS 1.2 renegotiation because the later check was incorrectly using SNI-derived state.
A crash in spyOn on non-function indexed props is fixed (a65a98f)
The test suite now covers a case where spyOn(obj, index) corrupts indexed properties that are not functions. The fix prevents a segmentation fault and preserves the original property value.
The build system now includes native timing instrumentation (c7e647f)
bun run build --timings now emits a timing report and HTML chart for build phases, and CI gets the same visibility. The change also simplifies symbol-order file inheritance across builds, which the new timing path depends on.
Other misc changes
- CI and mordant job churn: bumps, baseline refreshes, and workflow fixes (8 commits)
- Darwin CI script updates and Homebrew tap-trust fixes (2 commits)
- Build/target and test harness maintenance, including module-graph GC test stabilization and Rust target fixes (5 commits)
- Docs updates and small cleanup/refactor commits (5 commits)