Bun.serve now applies real TCP backpressure to slow body readers (
783d2a9)
Bun.serve no longer lets request bodies pile up in memory when handlers consume them slowly. The fix wires pause/resume behavior through the request-body pipeline so clients are throttled appropriately and oversized or buffered reads behave correctly.
Bun.spawn now throws immediately for pre-aborted signals (2d96969)
Bun.spawn({ signal }) now fails fast with an AbortError when the signal is already aborted, instead of forking a child and killing it afterward. That matches expected AbortSignal semantics and preserves signal.reason as the error cause.
ServerWebSocket APIs now send Blob bytes as binary frames (c7233fb)
Server-side websocket send/publish/ping/pong paths now recognize Blob input and transmit its raw bytes instead of stringifying it to "[object Blob]". This fixes silent data corruption and brings Bun in line with client-side websocket behavior and common ecosystem expectations.
DecompressionStream("zstd") now handles concatenated frames (7c92467)
Zstd decompression now continues across back-to-back frames instead of treating the second frame as trailing junk. This matters for real-world multi-frame zstd streams, including cat a.zst b.zst and pzstd output.
Shell yes output no longer aborts captured stdout (6fb430d)
Captured-output shell commands now dispatch the correct task type for yes, preventing an internal panic when the process reschedules work onto the event loop. This restores .text(), .quiet(), .lines(), and .json() for a common infinite-output command.
DNS timeout timers stay armed for overflowed in-flight queries (bcdf88e)
The resolver now keeps its c-ares timeout timer alive even when more than 32 queries of one type are in flight. That closes a hang where overflowed requests could become invisible to the timer and never time out.
spawn() ignores encoding like Node does (6c12afd)
child_process.spawn() now tolerates `encoding: