Repository Issue Activity (beta)

#26415 High CPU usage on Bun vs Node.js for Discord voice streaming (8x to 13x higher)

#40361 Bun.build has no way to set CSS browser targets, so oklch() is always downlevelled (minified output larger than input)

#40366 `bun prune`/`bun dedupe`: false "bun.lock does not match package.json" when a workspace package is both a dependency and a peer dependency

#40364 CSS: selector lists containing :where() or :has() are split into one rule per selector, duplicating declarations

#40365 Multiple security issue

#40127 `assert.deepEqual` regression in Bun v1.4.0

#40362 Minifier: three missing modern-syntax transforms (Math.pow → **, unused catch binding, ||=)

#40358 `node:http2` client sends DATA using a new `SETTINGS_INITIAL_WINDOW_SIZE` before acknowledging the SETTINGS frame

#40355 isolated linker: shared fallback `.bun/node_modules/<name>` link races between versions across identical installs (npm: alias installing a second copy; breaks TypeScript 6/7 coexistence)

#2246 Bun implementing a Formatter and Linter

#40301 fail on version 1.4 which was working on 1.3.14

#34398 Async-thrown Error loses its message from error.stack when GC runs before first .stack access

#40350 node:http: uncaught "write after end" from advanceResponsePipeline kills the server process (regression in 1.4.0)

#39354 bun build --compile converts SIGBUS termination to SIGILL

#40316 NODE_OPTIONS is ignored, breaking `react-router dev` on React Router 8.3+ under the Bun runtime

#11958 bun drizzle sqlite documentation wrong?

#40347 Crash: Segmentation fault during `bun test` on Windows (vmEntryToJavaScript)

#4869 FIPS Support

#39252 Bun.build({ files }) panics on CSS data URLs at 1024 bytes

#12615 using dynamic `import` causes `__require` to be emitted when bundling

#40209 bun test --isolate: happy-dom GlobalRegistrator + a single mock.module() re-pins each file's realm — ~8.7 MB/file linear RSS growth survives the #31771 fix on 1.4.0

#40341 `fs.truncateSync` missing-path ENOENT reports `syscall: "truncate"` instead of Node’s `"open"`

#40342 Pre-aborted `child_process.spawn` / `fs.promises.readFile` / `http.request` use `Error` as constructor, not `AbortError`

#40339 `fs.openAsBlob()` infers MIME from the file extension; Node leaves `blob.type === ""`

#40340 `require(esm)`: `__esModule` is not an own enumerable property (Object.keys omits it)