Issues

Runtime transpiler inlines `const` literals into closures, so `Function.prototype.toString()` no longer returns the source text

#43460

· danielsimonjr opened

on Sep 19, 2026

worker_threads: parent `worker.postMessage()` never reaches the worker's global `message` listener (only `parentPort`), although `self`/`postMessage`/`addEventListener` exist in the worker

#43459

· danielsimonjr opened

on Sep 19, 2026

Bun.build: FinalizationRegistry cleanup scheduled by the worker-teardown GC never runs, and its keep-alive stays on the worker thread's event loop

#43458

· robobun opened

on Sep 19, 2026

node:http server: req.complete and request completion still differ from Node in six flows

#43455

· robobun opened

on Sep 19, 2026

node:buffer: buf.write() with a non-string value differs from Node in its message and check order

#43451

· robobun opened

on Sep 19, 2026

`Bun.Terminal` on Windows swallows mouse-tracking escape sequences (`?1000h`/`?1006h`) via ConPTY — request configurable ConPTY DLL like node-pty

#43450

· mizulu opened

on Sep 19, 2026

node:http2: a failed respondWithFD()/respondWithFile() calls respond() before it destroys the stream

#43448

· robobun opened

on Sep 19, 2026

node:http2: ServerHttp2Stream checks `:status` differently than Node (no integer conversion, respond() accepts 1xx)

#43447

· robobun opened

on Sep 19, 2026

node:buffer: an encoding that is not a string is coerced differently than in Node

#43426

· robobun opened

on Sep 19, 2026

node:http2: respond() with a header block over maxSendHeaderBlockLength sends no frame, the client request hangs

#43423

· robobun opened

on Sep 19, 2026

node:http: a pipelined Upgrade request never reaches shouldUpgradeCallback or the 'upgrade' event

#43420

· robobun opened

on Sep 19, 2026

Bun.WebView (chrome): per-view browser contexts, for isolated cookies and a per-view proxy

#43416

· emilienbidet opened

on Sep 19, 2026

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All issues

Runtime transpiler inlines `const` literals into closures, so `Function.prototype.toString()` no longer returns the source text

worker_threads: parent `worker.postMessage()` never reaches the worker's global `message` listener (only `parentPort`), although `self`/`postMessage`/`addEventListener` exist in the worker

Bun.build: FinalizationRegistry cleanup scheduled by the worker-teardown GC never runs, and its keep-alive stays on the worker thread's event loop

node:http server: req.complete and request completion still differ from Node in six flows

node:buffer: buf.write() with a non-string value differs from Node in its message and check order

`Bun.Terminal` on Windows swallows mouse-tracking escape sequences (`?1000h`/`?1006h`) via ConPTY — request configurable ConPTY DLL like node-pty

node:http2: a failed respondWithFD()/respondWithFile() calls respond() before it destroys the stream

node:http2: ServerHttp2Stream checks `:status` differently than Node (no integer conversion, respond() accepts 1xx)

node:buffer: an encoding that is not a string is coerced differently than in Node

node:http2: respond() with a header block over maxSendHeaderBlockLength sends no frame, the client request hangs

node:http: a pipelined Upgrade request never reaches shouldUpgradeCallback or the 'upgrade' event

Bun.WebView (chrome): per-view browser contexts, for isolated cookies and a per-view proxy

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