Windows net.connect now reports the real failure code (
2309a18)
Bun now maps the underlying Winsock error instead of collapsing every failed connect() into ECONNREFUSED/ENOENT. That fixes incorrect error matching on Windows and unblocks tests that expect the specific socket failure, like EADDRINUSE and ECONNRESET.
Bun.serve no longer use-after-frees retained ServerWebSocket objects (7ff33c3)
A retained ServerWebSocket can now outlive a stopped server without later calls like publish() hitting freed memory. This closes an ASAN-detected lifetime bug in WebSocket server shutdown.
SQLite close(false) keeps prepared statements alive, and query() becomes LRU-cached (
5c239c7)
Database.close(false) is restored as a graceful close mode for db.prepare() statements, while close(true) remains the “finalize everything now” path. The patch also adds a documented MAX_QUERY_CACHE_SIZE and makes db.query() use an LRU cache, which changes how statement eviction and reuse behave.
HTTP now parses token-list headers correctly (2acf291)
Connection, Transfer-Encoding, Content-Encoding, and Upgrade are now treated as comma-separated token lists instead of whole-string comparisons. This fixes keep-alive pooling bugs and improves websocket/fetch header handling when multiple values appear.
tsconfig useDefineForClassFields is honored in the parser/transpiler (6ec38a7)
Bun now threads useDefineForClassFields from tsconfig through parsing and transpilation instead of defaulting class-field semantics. This fixes long-standing TypeScript compatibility bugs where field initialization behaved incorrectly under useDefineForClassFields: false.
React compiler preserves delete and typeof semantics (81a68d3)
The React compiler now carries UnaryFlags through HIR/codegen so delete obj.prop and typeof undeclaredGlobal keep their original runtime meaning. Without this, generated code could wrap expressions in a way that changed behavior.
Stream direct controllers stop throwing after close/cancel (2882c6c)
After a direct readable stream is closed or cancelled, its controller methods now no-op instead of throwing TypeError from late producer callbacks. That makes terminal-barrier behavior consistent with user expectations and avoids post-close crashes in in-flight pull() logic.
Node module._nodeModulePaths() trims stray separators (f5689a2)
Bun now strips trailing path separators before building Node module lookup paths. This fixes a CI flake where _nodeModulePaths("") could produce duplicated ...//node_modules entries.
JSSink closes release native backing correctly (506945e)
Prototype close() paths for JSSink wrappers now release the native backing instead of only detaching the JS shell. That prevents resource leaks for sinks like ArrayBufferSink and FileSink when the wrapper is later collected.
Other misc changes
- Dead-code / refactor sweeps across C++, Rust, and JS internals
- Test flake fixes and expectation updates for spawn, fetch, install, VM, and websocket suites
- CLI/bundler/parser refactors collapsing dependent bools into enums
- macOS DNS resolver overhaul to use
DNSServiceGetAddrInfo - Minor docs and type-definition updates for SQLite and internal APIs