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          "title": "`bun lint --print-config` accepts rule options that `bun lint` and ESLint's `--print-config` reject",
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          "title": "`expect` diff matchers ignore `util.inspect.custom` and serialise the whole object graph on failure",
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          "title": "bun lint / bun check / bun fmt run a package.json script of the same name, but bun test / bun build always run the built-in",
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          "title": "bun:test: setImmediate callbacks starved while awaiting expect(promise).resolves/.rejects when any I/O handle is open",
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      "title": "Bundled circular imports initialize out of order, yielding undefined",
      "short_name": "Circular imports initialize out of order",
      "named": true,
      "status": "open",
      "description": "Output from `bun build` evaluates circular module initialisers in a different order than `bun run`, so a TDZ ReferenceError becomes a silent `undefined`.",
      "quote": "Only one side dereferences the other at module-evaluation time; the back-edge is used lazily.",
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      "impact_class": "broken_workflow",
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      "voters": 3,
      "first_seen": "2026-09-14 00:04:20+00",
      "last_seen": "2026-09-14 00:04:20+00",
      "platforms": [
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      ],
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      "rank": 0.92,
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        {
          "title": "`bun build` emits circular module initialisers out of order, turning a TDZ ReferenceError into a silent `undefined`",
          "url": "https://github.com/oven-sh/bun/issues/42664",
          "author": "benrfairless",
          "created_at": "2026-09-14 00:04:20+00"
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      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/5438",
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      "product": "bun",
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      "title": "node:module missing stripTypeScriptTypes export breaks bunx package",
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      "named": true,
      "status": "open",
      "description": "Running \"bunx @deepseek-ai/dsh web\" ends with \"plugin tree failed to load\" importing @deepseek-ai/dsh-code-runtime-worker-thread.",
      "quote": "SyntaxError: Export named 'stripTypeScriptTypes' not found in module 'node:module'.",
      "affected_surface": "Node.js compatibility layer",
      "error_signature": "SyntaxError: Export named 'stripTypeScriptTypes' not found in module 'node:module'.",
      "job": null,
      "impact_class": "outage",
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      "last_seen": "2026-09-27 09:34:18+00",
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      ],
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        "1.4.2"
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          "title": "stripTypeScriptTypes missing from node when installing bunx @deepseek-ai/dsh web",
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          "author": "ohbob",
          "created_at": "2026-09-27 09:34:18+00"
        },
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          "title": "SyntaxError: Export named 'stripTypeScriptTypes' not found in module 'node:module'.",
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          "created_at": "2026-08-21 14:58:57+00"
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      "status": "open",
      "description": "Bare \"undici\" imports resolve to Bun's shim missing MockAgent methods, ping(), and the dispatcher layer, at runtime and bundle time.",
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      "error_signature": "TypeError: ping is not a function. (In 'ping({})', 'ping' is undefined)",
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      "impact_class": null,
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      "voters": 0,
      "first_seen": "2026-07-27 12:05:06+00",
      "last_seen": "2026-09-08 22:33:25+00",
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        "macos",
        "windows"
      ],
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        "1.4.0+34cbb9a40",
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          "title": "Bare \"undici\" resolves to built-in shim whose MockAgent has no methods, even with the real package installed",
          "url": "https://github.com/oven-sh/bun/issues/36098",
          "author": "steipete",
          "created_at": "2026-07-27 12:05:06+00"
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        {
          "title": "undici shim lacks `ping()` export and `undici:websocket:ping`/`pong` diagnostics channels, breaking @slack/socket-mode (permanent reconnect loop)",
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          "author": "sadfun",
          "created_at": "2026-08-07 08:51:18+00"
        },
        {
          "title": "Installed `undici` package is shadowed by a built-in shim with no dispatcher layer",
          "url": "https://github.com/oven-sh/bun/issues/42084",
          "author": "RoxVell",
          "created_at": "2026-09-08 22:33:25+00"
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      "id": 21570,
      "product": "bun",
      "kind": "bug",
      "title": "Empty Bun.write to stdout/stderr truncates instead of writing nothing",
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      "status": "open",
      "description": "On Windows pipes it throws EINVAL on ftruncate; on Linux with `2>&1` it empties the shared output file.",
      "quote": "An empty write to piped stdout/stderr should write zero bytes and resolve successfully, without attempting to truncate the pipe.",
      "affected_surface": "Bun.write",
      "error_signature": "EINVAL: invalid argument, ftruncate",
      "job": null,
      "impact_class": null,
      "others": 3,
      "reports": 3,
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      "voters": 0,
      "first_seen": "2026-10-26 11:07:29+00",
      "last_seen": "2026-10-28 15:54:23+00",
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        "linux",
        "windows"
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      "versions": [
        "1.3.14",
        "1.4.4-canary.1"
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          "title": "Windows: empty Bun.write to piped stdout/stderr throws EINVAL: invalid argument, ftruncate",
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          "author": "d1dac0",
          "created_at": "2026-10-28 15:54:23+00"
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          "title": "An empty `Bun.write(Bun.stderr, '')` truncates the file shared by `2>&1`, producing an empty output file with exit 0",
          "url": "https://github.com/oven-sh/bun/issues/46977",
          "author": "liuqin164",
          "created_at": "2026-10-26 11:07:29+00"
        },
        {
          "title": "Windows: empty Bun.write to piped stdout/stderr throws EINVAL: invalid argument, ftruncate",
          "url": "https://github.com/oven-sh/bun/issues/47207",
          "author": "diegobic",
          "created_at": "2026-10-28 15:54:04+00"
        }
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      "product": "bun",
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      "title": "Bun.write never resolves when writing a fetch Response",
      "short_name": "Bun.write hangs on fetch Response",
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      "status": "open",
      "description": "Write promise never settles and file is never written; seen with new Response(stream) and when Response is GC'd mid-download.",
      "quote": "`Bun.write(path, new Response(streamFromFetch))` never completes.",
      "affected_surface": "Bun.write API",
      "error_signature": null,
      "job": null,
      "impact_class": "broken_workflow",
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      "last_seen": "2026-09-19 09:57:08+00",
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        "macos"
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        "1.4",
        "v1.4.0"
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        {
          "title": "Bun.write(path, new Response(stream)) hangs forever at 100% CPU and never creates the file",
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          "author": "jkoppel",
          "created_at": "2026-09-19 09:57:08+00"
        },
        {
          "title": "Bun.write(path, response) never resolves when the fetch Response is GC'd mid-download; fetch finalizer ignores the pending write waiter",
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          "created_at": "2026-08-24 01:12:27+00"
        },
        {
          "title": "Writing Response to disk hangs indefinitely (1.4 regression)",
          "url": "https://github.com/oven-sh/bun/issues/35854",
          "author": "iitzkube",
          "created_at": "2026-07-26 01:33:29+00"
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      "quote": "When importing `vi` from `vitest`, `vi.clearAllTimers()` throws if fake timers are inactive.",
      "affected_surface": "bun test",
      "error_signature": "Fake timers are not active. Call useFakeTimers() first.",
      "job": null,
      "impact_class": "broken_workflow",
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      "voters": 0,
      "first_seen": "2026-11-01 14:42:14+00",
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        "linux",
        "macos"
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        "5.0.3"
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      "cohesion": 0.89,
      "rank": 0.8,
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      "exemplars": [
        {
          "title": "bun test: vi.clearAllTimers() throws with real timers, unlike Vitest",
          "url": "https://github.com/oven-sh/bun/issues/47657",
          "author": "jpambrun",
          "created_at": "2026-11-01 14:42:14+00"
        },
        {
          "title": "bun test: jest.clearAllTimers() throws when fake timers are not active (Jest and Vitest treat it as a no-op)",
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          "author": "avhn",
          "created_at": "2026-11-07 19:01:28+00"
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      "url": "https://rapsheet.dev/sheets/bun/issues/23870",
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      "product": "bun",
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      "title": "Frozen lockfile install rejects lockfile Bun just generated",
      "short_name": "Frozen install rejects fresh lockfile",
      "named": true,
      "status": "open",
      "description": "After bun install or bun add writes bun.lock with no edits in between, bun install --frozen-lockfile exits with status 1.",
      "quote": "A frozen install should never report \"lockfile had changes\" immediately after a successful non-frozen install with no edits in between.",
      "affected_surface": "bun install",
      "error_signature": "error: lockfile had changes, but lockfile is frozen",
      "job": null,
      "impact_class": "broken_workflow",
      "others": 3,
      "reports": 3,
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      "voters": 0,
      "first_seen": "2026-07-31 17:28:21+00",
      "last_seen": "2026-10-07 18:28:21+00",
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          "title": "bun install --frozen-lockfile rejects a lockfile that bun install just generated",
          "url": "https://github.com/oven-sh/bun/issues/36577",
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          "created_at": "2026-07-31 17:28:21+00"
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        {
          "title": "--frozen-lockfile rejects bun's own lockfile output (1.4.0-canary)",
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          "author": "iuculano",
          "created_at": "2026-08-10 22:29:52+00"
        },
        {
          "title": "`bun add` writes a bun.lock that the next `bun install` rewrites, so `--frozen-lockfile` fails right after `bun add`",
          "url": "https://github.com/oven-sh/bun/issues/44713",
          "author": "Itz-Agasta",
          "created_at": "2026-10-07 18:28:21+00"
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      "url": "https://rapsheet.dev/sheets/bun/issues/5989",
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      "kind": "bug",
      "title": "Bun check reports TS2322 tsc accepts on deeply nested types",
      "short_name": null,
      "named": true,
      "status": "open",
      "description": "Deep comparisons are cut off at different depths than `tsc`, giving false TS2322s and a missed one.",
      "quote": "Possibly the same cause as #46998 (deep comparisons are cut off at different depths than `tsc`).",
      "affected_surface": "bun check",
      "error_signature": null,
      "job": null,
      "impact_class": "broken_workflow",
      "others": 2,
      "reports": 2,
      "reporters": 2,
      "voters": 0,
      "first_seen": "2026-10-26 16:25:10+00",
      "last_seen": "2026-10-27 08:15:19+00",
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        "1.4.4+38afee6c8"
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          "author": "tykid16",
          "created_at": "2026-10-27 08:15:19+00"
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        {
          "title": "`bun check`: deep comparisons are cut off at different depths than `tsc` (false TS2322s and a missed one)",
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          "author": "ebidel",
          "created_at": "2026-10-26 16:25:10+00"
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      "url": "https://rapsheet.dev/sheets/bun/issues/21687",
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      "product": "bun",
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      "title": "Runtime plugin onLoad never executes CommonJS contents",
      "short_name": "Plugin onLoad skips CommonJS contents",
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      "status": "open",
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      "quote": "The `onLoad` callback runs, but nothing in `contents` executes and the module is empty.",
      "affected_surface": "Runtime plugins",
      "error_signature": "TypeError: greet is not a function.",
      "job": null,
      "impact_class": "broken_workflow",
      "others": 2,
      "reports": 2,
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      "voters": 0,
      "first_seen": "2026-08-20 19:09:22+00",
      "last_seen": "2026-10-07 13:07:47+00",
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        "macos"
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          "title": "Runtime plugin onLoad: CommonJS contents are never executed (module comes back empty)",
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          "author": "prpcodes",
          "created_at": "2026-10-07 13:07:47+00"
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          "title": "`Bun.plugin()` cannot safely instrument JavaScript: `onLoad()` breaks CommonJS",
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          "created_at": "2026-08-20 19:09:22+00"
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      "id": 4800,
      "product": "bun",
      "kind": "bug",
      "title": "DNS lookup returns ENOTFOUND for split-DNS names on macOS",
      "short_name": "ENOTFOUND for split-DNS names",
      "named": true,
      "status": "open",
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      "quote": null,
      "affected_surface": "dns.lookup",
      "error_signature": null,
      "job": null,
      "impact_class": "broken_workflow",
      "others": 2,
      "reports": 2,
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      "voters": 1,
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      "last_seen": "2026-09-26 23:17:51+00",
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        "macos"
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      "versions": [
        "1.3.14",
        "1.4.2+744846f84"
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          "title": "macOS: dns.lookup/fetch ENOTFOUND for split-DNS names — DNSServiceGetAddrInfoEx ignores kDNSServiceAttrAllowFailover (follow-up to #40573)",
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          "author": "mimi1vx",
          "created_at": "2026-09-26 23:17:51+00"
        },
        {
          "title": "dns.lookup() returns ENOTFOUND for hostnames served by a macOS supplemental/scoped resolver (regression 1.3.14 → 1.4.0; fetch() unaffected)",
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          "created_at": "2026-08-26 21:32:38+00"
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      "product": "bun",
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      "short_name": "Async realpath drops drive root slash",
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      "status": "open",
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      "quote": "A Windows drive root is the one path `fs.promises.realpath` gets wrong: it comes back drive-relative (`C:`) instead of `C:\\`.",
      "affected_surface": "fs/promises API",
      "error_signature": null,
      "job": null,
      "impact_class": "broken_workflow",
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      "voters": 0,
      "first_seen": "2026-09-13 10:00:51+00",
      "last_seen": "2026-10-15 15:08:27+00",
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        "1.4.3"
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          "title": "Windows: fs/promises realpath('C:\\') returns 'C:' - async disagrees with realpathSync, and readdir of that value throws ENOENT",
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          "created_at": "2026-10-15 15:08:27+00"
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        {
          "title": "node:fs: fs.promises.realpath returns a drive-relative path for a Windows drive root",
          "url": "https://github.com/oven-sh/bun/issues/42581",
          "author": "NitroRCr",
          "created_at": "2026-09-13 10:00:51+00"
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      "id": 5831,
      "product": "bun",
      "kind": "bug",
      "title": "Explicit exports dropped alongside export * under Vite SSR",
      "short_name": "Exports dropped with export *",
      "named": true,
      "status": "open",
      "description": "A module that also does `export * from` loses its `export { … }` and `export default` under vitest or Vite's SSR transform on Bun.",
      "quote": "Under vitest on Bun the module namespace has the `export *` names and `default`, but not `z` — the re-exported namespace binding is dropped.",
      "affected_surface": "Vite SSR transform",
      "error_signature": "typeof z: undefined | 'z' in ns: false",
      "job": null,
      "impact_class": "broken_workflow",
      "others": 2,
      "reports": 2,
      "reporters": 2,
      "voters": 0,
      "first_seen": "2026-08-21 04:13:18+00",
      "last_seen": "2026-10-22 18:28:03+00",
      "platforms": [
        "macos"
      ],
      "versions": [
        "1.4.0+34cbb9a40",
        "1.4.4+38afee6c8"
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      "rank": 0.77,
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      "exemplars": [
        {
          "title": "vitest under bun drops re-exported namespace binding (`import * as z; export { z }`) — zod's `z` is undefined",
          "url": "https://github.com/oven-sh/bun/issues/46532",
          "author": "keonik",
          "created_at": "2026-10-22 18:28:03+00"
        },
        {
          "title": "Vite SSR transform drops a module's explicit exports when it also does export *",
          "url": "https://github.com/oven-sh/bun/issues/39866",
          "author": "Bougerous",
          "created_at": "2026-08-21 04:13:18+00"
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      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/5831",
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      "id": 4486,
      "product": "bun",
      "kind": "bug",
      "title": "Built-in ws module differs from npm ws",
      "short_name": "Built-in ws differs from npm ws",
      "named": true,
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      "description": "Server and client sockets differ from npm ws, e.g. server BunWebSocketMocked lacks pause(), resume() and isPaused.",
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        {
          "title": "Playwright hangs forever and Chromium exits 0: extra stdio fds double-closed in 1.3.x (same root cause as #47561)",
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          "created_at": "2026-10-17 15:06:17+00"
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          "title": "fs.realpathSync throws EOPNOTSUPP on a Unix domain socket on macOS (lstat and stat succeed; works on Linux and in Node)",
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          "title": "Bun.SQL: parameterized queries fail on int4[]/float4[] values with NULLs or more than one dimension",
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      "title": "Segfault at address 0xFFFFFFFFFFFFFFFF running Claude Code on Windows",
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          "title": "Segmentation fault at address 0xFFFFFFFFFFFFFFFF in Claude Code",
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          "title": "`formData()` ignores the multipart part's `Content-Type` header and infers `File.type` from the filename extension",
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      "quote": "Memory grows linearly with the number of files until the worker runs out of RAM.",
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      "last_seen": "2026-11-04 11:55:06+00",
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          "title": "bun test --isolate keeps every test file's global alive once the file loads a native addon with process.dlopen",
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          "author": "Kayno0o",
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      "description": "als.getStore() returns undefined inside process.on('unhandledRejection'), while Node restores the context the promise was rejected in.",
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          "title": "AsyncLocalStorage store is not available inside process.on('unhandledRejection') listeners (Node restores it)",
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          "title": "node:http2 server ends the session at the 100th malformed request, node keeps it",
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      "description": "`expect(...).resolves` waits for the promise before it returns; thenables that start work in `then()` never settle and the run hangs.",
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          "title": "bun:test: expect(promise).resolves blocks until the promise settles, and the test timeout never fires",
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          "title": "`net.Server`'s constructor callback is not a `'connection'` listener, so `server.emit('connection', socket)` never reaches it",
          "url": "https://github.com/oven-sh/bun/issues/41060",
          "author": "gkurt",
          "created_at": "2026-08-31 16:00:56+00"
        },
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          "title": "node:net: net.createServer(callback) does not register the callback as a \"connection\" listener",
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          "author": "oskstr",
          "created_at": "2026-08-29 18:57:35+00"
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      "product": "bun",
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      "title": "v8.getHeapStatistics() cost grows with heap size",
      "short_name": "Slow v8.getHeapStatistics()",
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      "status": "open",
      "description": "The call walks the whole heap and blocks the JS thread for time proportional to the number of live objects.",
      "quote": "`v8.getHeapStatistics()` should take constant time regardless of the heap size",
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      "error_signature": null,
      "job": null,
      "impact_class": "broken_workflow",
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      "voters": 0,
      "first_seen": "2026-09-10 10:48:09+00",
      "last_seen": "2026-10-21 20:53:20+00",
      "platforms": [
        "macos"
      ],
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        "1.4.2"
      ],
      "cohesion": 0.83,
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        {
          "title": "`v8.getHeapStatistics()` is O(heap) on Bun and costs ~2x a full GC",
          "url": "https://github.com/oven-sh/bun/issues/42200",
          "author": "krassx",
          "created_at": "2026-09-10 10:48:09+00"
        },
        {
          "title": "`v8.getHeapStatistics()` walks the whole heap on every call, so its cost grows with live objects",
          "url": "https://github.com/oven-sh/bun/issues/46391",
          "author": "douglasthmz",
          "created_at": "2026-10-21 20:53:20+00"
        }
      ],
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      "id": 4825,
      "product": "bun",
      "kind": "bug",
      "title": "TLS client sends Finished and certificate before rejecting server",
      "short_name": null,
      "named": true,
      "status": "open",
      "description": null,
      "quote": "But its TLS 1.3 Finished is on the wire before the identity check decides.",
      "affected_surface": "TLS client",
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      "job": null,
      "impact_class": "security",
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      "voters": 0,
      "first_seen": "2026-09-21 12:40:29+00",
      "last_seen": "2026-09-25 20:24:36+00",
      "platforms": [
        "linux",
        "macos"
      ],
      "versions": [
        "1.3",
        "1.4.3-canary.1"
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        {
          "title": "node:tls: a client that rejects the server in checkServerIdentity still sends its TLS 1.3 Finished, so the server emits 'secureConnection' where Node emits 'tlsClientError'",
          "url": "https://github.com/oven-sh/bun/issues/43807",
          "author": "robobun",
          "created_at": "2026-09-22 19:21:26+00"
        },
        {
          "title": "fetch, Bun.SQL (postgres + mysql), Bun.RedisClient and WebSocket send the mTLS client certificate to servers that fail verification",
          "url": "https://github.com/oven-sh/bun/issues/43684",
          "author": "VenkatKwest",
          "created_at": "2026-09-21 12:40:29+00"
        },
        {
          "title": "fetch: the TLS 1.3 client certificate reaches a server that `checkServerIdentity` then refuses",
          "url": "https://github.com/oven-sh/bun/issues/43998",
          "author": "robobun",
          "created_at": "2026-09-25 20:24:35+00"
        }
      ],
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      "title": "fs.watch emits only one 'rename' event where Node emits two",
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      "description": "Second rename event is dropped when an entry is removed and recreated, or when a file is renamed with mv.",
      "quote": "The node:fs watcher in `test.ts` should log two `\"rename\"` events one for `foo.bar` disappearing and another for `fuu.baz` being added.",
      "affected_surface": "node:fs watch",
      "error_signature": null,
      "job": null,
      "impact_class": "broken_workflow",
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      "reporters": 2,
      "voters": 0,
      "first_seen": "2026-08-05 11:36:50+00",
      "last_seen": "2026-09-25 22:12:24+00",
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        "linux",
        "macos"
      ],
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        "1.3.14+0d9b296af",
        "1.4.3-canary.1"
      ],
      "cohesion": 0.8,
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        "id": 56,
        "text": "Downgrade to bun 1.3.13, where both events are correctly emitted",
        "worked": 0,
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        "source": "naming"
      },
      "exemplars": [
        {
          "title": "fs.watch reports one 'rename' when an entry is removed and created again (Node reports two)",
          "url": "https://github.com/oven-sh/bun/issues/44005",
          "author": "robobun",
          "created_at": "2026-09-25 22:12:24+00"
        },
        {
          "title": "`node:fs`'s watch only fires single \"rename\" event on file rename (MacOS)",
          "url": "https://github.com/oven-sh/bun/issues/36957",
          "author": "maranomynet",
          "created_at": "2026-08-05 11:36:50+00"
        }
      ],
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      "id": 4440,
      "product": "bun",
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      "short_name": "onResolve skips bare specifiers",
      "named": true,
      "status": "open",
      "description": "Bun.plugin onResolve callback never runs for bare package or virtual specifiers, so import fails; onLoad still fires.",
      "quote": "`error: Cannot find package '@somemodule/foo'` — `onResolve` is never called.",
      "affected_surface": "Bun.plugin runtime",
      "error_signature": "error: Cannot find package '@somemodule/foo'",
      "job": null,
      "impact_class": "broken_workflow",
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      "first_seen": "2026-08-26 22:14:17+00",
      "last_seen": "2026-10-05 19:53:11+00",
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        "linux"
      ],
      "versions": [
        "1.4.0",
        "1.4.2"
      ],
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      "exemplars": [
        {
          "title": "Runtime Bun.plugin onResolve does not fire for bare package specifiers",
          "url": "https://github.com/oven-sh/bun/issues/44603",
          "author": "thdxr",
          "created_at": "2026-10-05 19:53:11+00"
        },
        {
          "title": "Runtime plugin onResolve never fires for bare or virtual specifiers (onLoad works)",
          "url": "https://github.com/oven-sh/bun/issues/40579",
          "author": "sebyx07",
          "created_at": "2026-08-26 22:14:17+00"
        }
      ],
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      "product": "bun",
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      "title": "Bun hangs at 100% CPU on CPUs without AVX",
      "short_name": "Hangs at 100% CPU without AVX",
      "named": true,
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      "description": "On QEMU default CPU models lacking SSSE3/SSE4/AVX, the process spins with no output and the entry file is never opened.",
      "quote": "btop shows a Bun process using 100% CPU on a single core while consuming only 10–11 MB of memory.",
      "affected_surface": "runtime startup",
      "error_signature": null,
      "job": null,
      "impact_class": "broken_workflow",
      "others": 2,
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      "voters": 0,
      "first_seen": "2026-09-04 11:03:42+00",
      "last_seen": "2026-09-21 12:07:04+00",
      "platforms": [
        "linux"
      ],
      "versions": [
        "1.4.0",
        "v1.4.2"
      ],
      "cohesion": 0.76,
      "rank": 0.6,
      "workaround": {
        "id": 57,
        "text": "Switch the VM to `-cpu host` so full SSE4.2/AVX2 flags are visible",
        "worked": 0,
        "failed": 0,
        "source": "naming"
      },
      "exemplars": [
        {
          "title": "Latest Bun (v1.4.2) can't run NestJS Apps on non-AVX CPUs",
          "url": "https://github.com/oven-sh/bun/issues/43683",
          "author": "DoKoB0512",
          "created_at": "2026-09-21 12:07:04+00"
        },
        {
          "title": "bun 1.4.0 spins at 100% CPU during early runtime init on QEMU default CPU model (SSE3-only CPUID), entry file never opened; 1.3.x shows ~5x memory bloat on same CPU",
          "url": "https://github.com/oven-sh/bun/issues/41361",
          "author": "rvk",
          "created_at": "2026-09-04 11:03:42+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/5219",
      "area": null,
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      "id": 5808,
      "product": "bun",
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      "title": "Process event listener types only accept memoryPressure in bun-types",
      "short_name": "Process event listener types only accept memoryPressure in bun-types",
      "named": true,
      "status": "open",
      "description": "tsc --noEmit rejects \"SIGINT\" and other event names for process.on, removeListener and off after bun-types 1.4.0.",
      "quote": "error TS2345: Argument of type '\"SIGINT\"' is not assignable to parameter of type '\"memoryPressure\"'.",
      "affected_surface": "bun-types",
      "error_signature": "error TS2345: Argument of type '\"SIGINT\"' is not assignable to parameter of type '\"memoryPressure\"'.",
      "job": null,
      "impact_class": "broken_workflow",
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      "reports": 2,
      "reporters": 2,
      "voters": 0,
      "first_seen": "2026-08-20 21:44:52+00",
      "last_seen": "2026-08-21 21:32:17+00",
      "platforms": [
        "linux"
      ],
      "versions": [
        "1.4.0",
        "1.4.0+34cbb9a40"
      ],
      "cohesion": 0.77,
      "rank": 0.59,
      "workaround": null,
      "exemplars": [
        {
          "title": "bun-types 1.4.0 memoryPressure overrides break process.removeListener/off with @types/node@24",
          "url": "https://github.com/oven-sh/bun/issues/40003",
          "author": "chenxin-yan",
          "created_at": "2026-08-21 21:32:17+00"
        },
        {
          "title": "New memoryPressure event type signature deletes all type signatures for other process events",
          "url": "https://github.com/oven-sh/bun/issues/39807",
          "author": "zutritt",
          "created_at": "2026-08-20 21:44:52+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/5808",
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      "id": 22114,
      "product": "bun",
      "kind": "bug",
      "title": "Startup slows with entry count in cwd and ancestor directories",
      "short_name": "Startup slows in large directories",
      "named": true,
      "status": "workaround",
      "description": "Even a no-op script like `bun -e 0` starts slower when the working directory or a parent folder holds many unrelated files.",
      "quote": "Startup time should not depend on how many unrelated files sit next to the script or in ancestor directories.",
      "affected_surface": "Startup",
      "error_signature": null,
      "job": null,
      "impact_class": "broken_workflow",
      "others": 2,
      "reports": 2,
      "reporters": 2,
      "voters": 0,
      "first_seen": "2026-10-27 19:15:20+00",
      "last_seen": "2026-11-07 17:08:11+00",
      "platforms": [
        "linux",
        "macos"
      ],
      "versions": [
        "1.4.4+38afee6c8"
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      "cohesion": 0.84,
      "rank": 0.59,
      "workaround": {
        "id": 716,
        "text": "Move the scripts' working directory to a normal project folder instead of one with many entries, such as /tmp.",
        "worked": 0,
        "failed": 0,
        "source": "naming"
      },
      "exemplars": [
        {
          "title": "Startup time scales with the number of entries in the cwd and every ancestor directory",
          "url": "https://github.com/oven-sh/bun/issues/48125",
          "author": "johnny4young",
          "created_at": "2026-11-07 17:08:11+00"
        },
        {
          "title": "Startup lists every entry of each ancestor directory, so a no-op script slows down linearly with unrelated files in parent folders",
          "url": "https://github.com/oven-sh/bun/issues/47103",
          "author": "marcospaulo",
          "created_at": "2026-10-27 19:15:20+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/22114",
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      "id": 4778,
      "product": "bun",
      "kind": "bug",
      "title": "WebView navigate() never settles on the WebKit backend",
      "short_name": "WebView navigate() never settles",
      "named": true,
      "status": "open",
      "description": "Varies by report: the reply frame is over 8 KB, or navigate() hangs forever after exactly 64 instances in one process.",
      "quote": "They stay pending past 10 s, and in a longer-lived process for as long as nothing else is sent to the view.",
      "affected_surface": "Bun.WebView",
      "error_signature": null,
      "job": null,
      "impact_class": "outage",
      "others": 2,
      "reports": 2,
      "reporters": 2,
      "voters": 0,
      "first_seen": "2026-08-30 08:39:06+00",
      "last_seen": "2026-09-27 16:11:14+00",
      "platforms": [
        "macos"
      ],
      "versions": [
        "1.4.0",
        "8.15"
      ],
      "cohesion": 0.88,
      "rank": 0.59,
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      "exemplars": [
        {
          "title": "Bun.WebView (webkit): navigate() sometimes never settles when the reply frame is over 8 KB (URL longer than ~8.15 KB)",
          "url": "https://github.com/oven-sh/bun/issues/44134",
          "author": "drakulavich",
          "created_at": "2026-09-27 16:11:14+00"
        },
        {
          "title": "Bun.WebView (webkit): every navigate() hangs forever after exactly 64 instances in one process; close() releases nothing",
          "url": "https://github.com/oven-sh/bun/issues/40951",
          "author": "archfear",
          "created_at": "2026-08-30 08:39:06+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/4778",
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      "id": 5776,
      "product": "bun",
      "kind": "bug",
      "title": "Test runner RSS grows per file under isolate and parallel modes",
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      "named": true,
      "status": "workaround",
      "description": "Memory retained across test files with `--isolate` or `--parallel`; worst with happy-dom GlobalRegistrator plus `mock.module()` in a preload.",
      "quote": "On our application suite this is 1.12 GiB (plain) versus **5.70 GiB** (`--isolate`) for the same 156 files / 2652 tests.",
      "affected_surface": "bun test",
      "error_signature": null,
      "job": null,
      "impact_class": "broken_workflow",
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      "reports": 3,
      "reporters": 3,
      "voters": 0,
      "first_seen": "2026-08-03 08:34:24+00",
      "last_seen": "2026-08-23 13:15:50+00",
      "platforms": [
        "linux",
        "macos"
      ],
      "versions": [
        "1.4.0",
        "5.7",
        "8.7"
      ],
      "cohesion": 0.84,
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      "workaround": {
        "id": 246,
        "text": "Run one `bun test` process per file, concurrently via `xargs -P 32`",
        "worked": 0,
        "failed": 0,
        "source": "naming"
      },
      "exemplars": [
        {
          "title": "bun test --isolate retains each realm's module graph: RSS climbs to ~3.5x the plain footprint (5.7 GB on a 156-file suite)",
          "url": "https://github.com/oven-sh/bun/issues/36815",
          "author": "vivere-dally",
          "created_at": "2026-08-03 08:34:24+00"
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        {
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          "url": "https://github.com/oven-sh/bun/issues/40209",
          "author": "nitsanavni",
          "created_at": "2026-08-23 13:15:50+00"
        },
        {
          "title": "bun test --parallel grows ~1 GB/s until OOM on linux-arm64 CI; one process per file is flat",
          "url": "https://github.com/oven-sh/bun/issues/40208",
          "author": "oliverjohns",
          "created_at": "2026-08-23 13:10:09+00"
        }
      ],
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      "id": 5397,
      "product": "bun",
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      "title": "CSS bundler warns on valid pseudo-elements and at-rules",
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      "status": "open",
      "description": "`bun build` on CSS flags spec-defined selectors like `::highlight()` and `::picker()` that lightningcss parses quietly; output stays correct.",
      "quote": "warn: Invalid selector. Unsupported pseudo-class or pseudo-element 'state'",
      "affected_surface": "CSS bundler",
      "error_signature": "warn: Invalid selector. Unsupported pseudo-class or pseudo-element 'state'",
      "job": null,
      "impact_class": "cosmetic",
      "others": 2,
      "reports": 2,
      "reporters": 2,
      "voters": 0,
      "first_seen": "2026-09-01 17:26:24+00",
      "last_seen": "2026-09-16 10:37:19+00",
      "platforms": [
        "linux",
        "macos"
      ],
      "versions": [
        "1.4.0",
        "1.4.3"
      ],
      "cohesion": 0.88,
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      "exemplars": [
        {
          "title": "css: `:state()`, `::highlight()`, `::target-text`, `@position-try` and four more constructs that lightningcss parses still warn as unsupported",
          "url": "https://github.com/oven-sh/bun/issues/42909",
          "author": "robobun",
          "created_at": "2026-09-16 10:37:19+00"
        },
        {
          "title": "css: the pseudo-element table trails lightningcss, so `::details-content`, `::picker()`, `::checkmark` and the carousel selectors warn as invalid",
          "url": "https://github.com/oven-sh/bun/issues/41120",
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          "created_at": "2026-09-01 17:26:24+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/5397",
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      "id": 5529,
      "product": "bun",
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      "title": "SIGSEGV in JSC garbage collector and Worker threads in long-running processes",
      "short_name": "SIGSEGV in JSC GC and Workers",
      "named": true,
      "status": "open",
      "description": "Crashes land in a \"Heap Helper Thread\" or \"Worker\" on macOS arm64, dereferencing small NULL-based addresses after hours of Worker churn.",
      "quote": "Both new crashes are pointer corruption: the collector and a Worker each dereference a small integer as an address.",
      "affected_surface": "Workers",
      "error_signature": "signal: SIGSEGV  KERN_INVALID_ADDRESS at 0x0000000000000005",
      "job": null,
      "impact_class": "outage",
      "others": 3,
      "reports": 3,
      "reporters": 2,
      "voters": 0,
      "first_seen": "2026-08-09 18:52:22+00",
      "last_seen": "2026-09-21 06:30:46+00",
      "platforms": [
        "macos"
      ],
      "versions": [
        "1.4.0-canary",
        "1.4.2",
        "1.4.3-canary"
      ],
      "cohesion": 0.9,
      "rank": 0.57,
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      "exemplars": [
        {
          "title": "JSC heap corruption still reproduces on 1.4.3-canary: SIGSEGV in the parallel marker and in a Worker (follow-up to #37284)",
          "url": "https://github.com/oven-sh/bun/issues/41857",
          "author": "proxysoul",
          "created_at": "2026-09-07 21:28:19+00"
        },
        {
          "title": "SIGSEGV at NULL+0xd0 / NULL+0x38 in a JSC Heap Helper / Worker thread after hours of Worker churn in a standalone executable (1.4.2, macOS arm64) - three reports, same frames",
          "url": "https://github.com/oven-sh/bun/issues/43663",
          "author": "code-yeongyu",
          "created_at": "2026-09-21 06:30:46+00"
        },
        {
          "title": "SIGSEGV inside JSC GC on 1.4.0-canary (macOS arm64): parallel marker crashes in JSCellButterfly::visitChildren; Worker crashes in JSRopeString finishSweep under Bun.gc(true)",
          "url": "https://github.com/oven-sh/bun/issues/37284",
          "author": "proxysoul",
          "created_at": "2026-08-09 18:52:22+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/5529",
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    },
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      "id": 4449,
      "product": "bun",
      "kind": "bug",
      "title": "Test workers segfault in JSFinalizationRegistry::takeDeadHoldingsValue",
      "short_name": "Test workers segfault",
      "named": true,
      "status": "open",
      "description": "Intermittent crash under bun test --parallel or --isolate on 1.4.2, with no native addons loaded in one report.",
      "quote": "error: a test worker process crashed with SIGSEGV while running dist/loader_smoke.test.mjs.",
      "affected_surface": "bun test",
      "error_signature": "error: a test worker process crashed with SIGSEGV while running dist/loader_smoke.test.mjs.",
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        "macos"
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          "title": "bun test --parallel: worker SIGSEGV in JSFinalizationRegistry::takeDeadHoldingsValue (no native addons)",
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          "created_at": "2026-10-05 06:49:55+00"
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          "title": "bun test --isolate: intermittent SIGSEGV in JSFinalizationRegistry::takeDeadHoldingsValue (0x70) on 1.4.2 Linux x64",
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      "error_signature": "error TS2339: Property 'code' does not exist on type 'Socket<\"buffer\">'.",
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        "macos"
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          "title": "Bun.udpSocket: error handler types say (socket, error), runtime calls (error)",
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      "description": "tlsClientError reports a bare ECONNRESET when the Bun client does not trust the CA or the hostname does not match.",
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          "title": "Bun's TLS client sends no alert when it rejects the server certificate",
          "url": "https://github.com/oven-sh/bun/issues/48079",
          "author": "XhstormR",
          "created_at": "2026-11-07 06:50:56+00"
        },
        {
          "title": "`tlsClientError` reports Bun-client certificate rejection as a bare `ECONNRESET`, hiding the alert",
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          "author": "XhstormR",
          "created_at": "2026-11-07 06:52:39+00"
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      "affected_surface": "bun test",
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        "macos"
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          "title": "bun test --parallel on Linux 1.4.0: a worker loses a subprocess exit notification and stops answering (Linux counterpart to #41024)",
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          "author": "bencmc",
          "created_at": "2026-09-21 15:44:40+00"
        },
        {
          "title": "bun test --parallel on macOS: promisified execFile never settles (lost subprocess exit notification) while the worker's event loop stays alive",
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          "author": "CarlosZiegler",
          "created_at": "2026-08-31 09:59:52+00"
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      "title": "Coverage under-reported when running tests with --parallel",
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      "quote": "Coverage from the workers should be merged.",
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        {
          "title": "bun test --coverage under --parallel undercounts LCOV for a plugin-loaded module shared across test files",
          "url": "https://github.com/oven-sh/bun/issues/40386",
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          "created_at": "2026-08-24 23:23:54+00"
        },
        {
          "title": "bun test --coverage --parallel does not merge line coverage across workers",
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          "title": "bun test --parallel: coverage merge under-reports vs. serial baseline, fails threshold with 0 test failures",
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          "author": "stevekinney",
          "created_at": "2026-08-27 00:06:54+00"
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      "status": "open",
      "description": "With `--react-compiler` and `--target=bun` or `--target=node`, `useState` and event handler props are deleted from output; browser target is correct.",
      "quote": "`reactCompiler: true` combined with `target: \"bun\"` or `target: \"node\"` silently deletes `useState` calls and event handler props from the output.",
      "affected_surface": "bun build",
      "error_signature": "Uncaught ReferenceError: setIsAuth is not defined",
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      "first_seen": "2026-08-06 06:01:38+00",
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        "windows"
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        "1.4.0-canary.1"
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          "title": "reactCompiler with target \"bun\" or \"node\" silently deletes useState calls and event handler props",
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          "author": "vnStrawHat",
          "created_at": "2026-08-25 09:37:18+00"
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          "title": "React Compiler:  Uncaught ReferenceError: setIsAuth is not defined",
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          "created_at": "2026-08-06 06:01:38+00"
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      "status": "open",
      "description": "Reaching the circular-structure TypeError costs seconds of CPU, far worse when an indent (space) argument is passed.",
      "quote": "Throw `TypeError: Converting circular structure to JSON` at roughly plain-input speed (Node: < 0.1 ms).",
      "affected_surface": "JSON.stringify",
      "error_signature": "TypeError: Converting circular structure to JSON",
      "job": null,
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          "title": "JSON.stringify is ~2400x/19000x slower than Node on circular input (indent path ~1.7s per call)",
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          "author": "nolotus",
          "created_at": "2026-09-24 10:13:42+00"
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          "title": "JSON.stringify on a cyclic value is ~600x slower than Node, and ~130,000x slower with an indent (2.3s)",
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      "title": "SIGILL crash during next build in oven/bun Docker image",
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      "description": "Happens on bun run build with Next.js 16 in Linux x64 Docker; bun install on the same image works.",
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      "error_signature": "failed to solve: process \"/bin/sh -c bun run build\" did not complete successfully: exit code: 132",
      "job": null,
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      "workaround": {
        "id": 182,
        "text": "Compile Next.js with Node 24, run production with bun server.js",
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        "source": "naming"
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      "exemplars": [
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          "created_at": "2026-08-18 18:23:33+00"
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        {
          "title": "SIGILL (exit 132) on bun run build with Next.js 16 Turbopack in oven/bun Docker (Coolify)",
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        "macos"
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        "source": "naming"
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      "exemplars": [
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          "title": "Worker drops messages posted during its top-level await (regression in 1.4.0)",
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          "created_at": "2026-10-04 20:29:38+00"
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        {
          "title": "Messages posted to a Worker before its top-level await completes are silently dropped (1.4.0 regression)",
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          "created_at": "2026-08-23 02:09:19+00"
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      "error_signature": "error: GET https://npm.pkg.github.com/download/@scope/a/0.1.19/<sha> - 401",
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        "macos"
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        "1.4.0"
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        "id": 181,
        "text": "Move the registry config from .npmrc to .bunfig.toml under [install.scopes] with url and token",
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        "source": "naming"
      },
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          "title": "private package installation seems to be broken via .npmrc in bun 1.4",
          "url": "https://github.com/oven-sh/bun/issues/40549",
          "author": "imrefazekas",
          "created_at": "2026-08-26 14:19:56+00"
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        {
          "title": "bun install 1.4.0: scoped-registry credentials dropped on tarball /download/ URLs (GitHub Packages 401; 1.3.14 works)",
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          "author": "adilallo",
          "created_at": "2026-08-20 16:03:34+00"
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      "last_seen": "2026-11-02 01:26:00+00",
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        "macos"
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        "7.0.2"
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          "title": "`bun check` rejects a mapped type over `NoInfer` of a tuple, which tsc 7.0.2 accepts",
          "url": "https://github.com/oven-sh/bun/issues/47705",
          "author": "burak-bayir",
          "created_at": "2026-11-02 01:26:00+00"
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        {
          "title": "`bun check` reports a false TS2322 for a mapped type over `NoInfer<[string]>`, which tsc 7.0.2 accepts",
          "url": "https://github.com/oven-sh/bun/issues/46429",
          "author": "burak-bayir",
          "created_at": "2026-10-22 01:48:53+00"
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      "quote": "Each of those paths gets its own kqueue handle on the same real file or directory.",
      "affected_surface": "watch mode",
      "error_signature": "EBADF: bad file descriptor, posix_spawn '.../bun'",
      "job": null,
      "impact_class": "broken_workflow",
      "others": 3,
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      "first_seen": "2026-08-29 13:31:54+00",
      "last_seen": "2026-09-14 09:52:11+00",
      "platforms": [
        "macos"
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        "1.4.2"
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          "title": "`bun --watch` holds duplicate fds per symlink path with the isolated linker (follow-up to #39783)",
          "url": "https://github.com/oven-sh/bun/issues/42701",
          "author": "vpontis",
          "created_at": "2026-09-14 09:52:10+00"
        },
        {
          "title": "macOS: bun --watch retains high FDs and breaks piped posix_spawn with EBADF",
          "url": "https://github.com/oven-sh/bun/issues/40907",
          "author": "waylon256yhw",
          "created_at": "2026-08-29 13:31:54+00"
        },
        {
          "title": "`bun --watch` watches node_modules despite docs saying it doesn't (isolated linker)",
          "url": "https://github.com/oven-sh/bun/issues/42702",
          "author": "vpontis",
          "created_at": "2026-09-14 09:52:11+00"
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      "id": 4880,
      "product": "bun",
      "kind": "bug",
      "title": "expect().resolves/.rejects never settles on Worker postMessage replies",
      "short_name": "Resolves/rejects hang on Worker replies",
      "named": true,
      "status": "open",
      "description": "In bun test, the matcher hangs while the same promise awaited plainly or via try/catch settles in milliseconds; last good 1.3.13.",
      "quote": "`await expect(promise).resolves.toBe(...)` in `bun test` does not observe a promise that settles from a cross-`Worker` `postMessage` reply.",
      "affected_surface": "bun:test matchers",
      "error_signature": null,
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          "title": "Hard Bug: HUMAN NEEDS TO INTERVENE. Segfault!",
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          "title": "node:fs: the Stats, BigIntStats, Dirent and StatFs prototypes have a Symbol.toStringTag that Node does not have",
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      "status": "open",
      "description": "The same happens at the end of an `await using` block and with `sql.file()`, on SQLite, PostgreSQL and MySQL.",
      "quote": "ERR_SQLITE_CONNECTION_CLOSED",
      "affected_surface": "Bun.SQL",
      "error_signature": "ERR_SQLITE_CONNECTION_CLOSED",
      "job": null,
      "impact_class": "broken_workflow",
      "others": 2,
      "reports": 2,
      "reporters": 1,
      "voters": 0,
      "first_seen": "2026-09-24 11:33:09+00",
      "last_seen": "2026-09-26 09:49:50+00",
      "platforms": [
        "linux"
      ],
      "versions": [
        "1.4.3-canary.1"
      ],
      "cohesion": 0.89,
      "rank": 0.18,
      "workaround": null,
      "exemplars": [
        {
          "title": "Bun.SQL: the query of `sql.file()` is rejected when a graceful `close()` follows in the same tick",
          "url": "https://github.com/oven-sh/bun/issues/44038",
          "author": "robobun",
          "created_at": "2026-09-26 09:49:50+00"
        },
        {
          "title": "Bun.SQL: a query started in the same tick as a graceful `close()` / `end()` is rejected and never sent",
          "url": "https://github.com/oven-sh/bun/issues/43887",
          "author": "robobun",
          "created_at": "2026-09-24 11:33:09+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/4812",
      "area": null,
      "theme": null
    },
    {
      "id": 5534,
      "product": "bun",
      "kind": "bug",
      "title": "Pending async reads exit process early on Windows",
      "short_name": "Pending reads exit process early",
      "named": true,
      "status": "open",
      "description": "A pending Bun.stdin.text() or rejecting Bun.file() read does not keep the event loop alive after module evaluation, exiting 0.",
      "quote": "Only a read awaited after module evaluation has completed (a floating `main()`, a Commander action, a `.then()` chain) is affected.",
      "affected_surface": "file and stdin reads",
      "error_signature": null,
      "job": null,
      "impact_class": "broken_workflow",
      "others": 3,
      "reports": 3,
      "reporters": 1,
      "voters": 0,
      "first_seen": "2026-08-20 19:11:43+00",
      "last_seen": "2026-09-07 11:11:45+00",
      "platforms": [
        "windows"
      ],
      "versions": [
        "1.4.0"
      ],
      "cohesion": 0.94,
      "rank": 0.17,
      "workaround": null,
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        {
          "title": "Windows: pending Bun.stdin.text() no longer keeps the event loop alive after module evaluation (regression in 1.4.0, worked in 1.3.11–1.3.14)",
          "url": "https://github.com/oven-sh/bun/issues/41850",
          "author": "rhuanbarreto",
          "created_at": "2026-09-07 11:11:45+00"
        },
        {
          "title": "Windows: pending Bun.stdin.text() no longer keeps the event loop alive after module evaluation (regression in 1.4.0, worked in 1.3.11–1.3.14)",
          "url": "https://github.com/oven-sh/bun/issues/41849",
          "author": "rhuanbarreto",
          "created_at": "2026-09-07 10:23:53+00"
        },
        {
          "title": "Windows: a rejecting Bun.file() read does not keep the event loop alive — process exits 0 mid-await with no output (regression in 1.4.0)",
          "url": "https://github.com/oven-sh/bun/issues/39787",
          "author": "rhuanbarreto",
          "created_at": "2026-08-20 19:11:43+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/5534",
      "area": null,
      "theme": null
    },
    {
      "id": 5858,
      "product": "bun",
      "kind": "bug",
      "title": "Compiled binaries SIGKILL'd at launch on macOS 27",
      "short_name": "Compiled binaries killed at launch",
      "named": true,
      "status": "open",
      "description": "Binaries from `bun build --compile` on 1.4.0 are killed before any user code runs; 1.3.14 artifacts still run despite invalid signature.",
      "quote": "A trivial `bun build --compile` binary should launch and print `hello-from-compiled`, the same way it does with Bun 1.3.14.",
      "affected_surface": "bun build --compile",
      "error_signature": "hello-140: invalid signature (code or signature have been modified)",
      "job": null,
      "impact_class": null,
      "others": 2,
      "reports": 2,
      "reporters": 1,
      "voters": 0,
      "first_seen": "2026-08-20 15:07:23+00",
      "last_seen": "2026-08-20 15:26:53+00",
      "platforms": [
        "macos"
      ],
      "versions": [
        "1.4.0"
      ],
      "cohesion": 1,
      "rank": 0.16,
      "workaround": null,
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        {
          "title": "Bun 1.4.0 `bun build --compile` binaries are SIGKILL'd on macOS 27; 1.3.14 artifacts still run",
          "url": "https://github.com/oven-sh/bun/issues/39764",
          "author": "baranwang",
          "created_at": "2026-08-20 15:26:53+00"
        },
        {
          "title": "Bun 1.4.0 `bun build --compile` binaries are SIGKILL'd on macOS 27; 1.3.14 artifacts still run",
          "url": "https://github.com/oven-sh/bun/issues/39758",
          "author": "baranwang",
          "created_at": "2026-08-20 15:07:23+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/5858",
      "area": null,
      "theme": null
    },
    {
      "id": 5934,
      "product": "bun",
      "kind": "bug",
      "title": "bun:sqlite on macOS uses Apple's system SQLite",
      "short_name": "bun:sqlite uses macOS system SQLite",
      "named": true,
      "status": "open",
      "description": "On macOS, bun:sqlite dlopens /usr/lib/libsqlite3.dylib, so sqlite_version() differs from Linux/Windows and loadExtension fails.",
      "quote": null,
      "affected_surface": "bun:sqlite",
      "error_signature": null,
      "job": null,
      "impact_class": "broken_workflow",
      "others": 2,
      "reports": 2,
      "reporters": 1,
      "voters": 0,
      "first_seen": "2026-08-14 19:09:11+00",
      "last_seen": "2026-08-15 00:42:13+00",
      "platforms": [
        "macos"
      ],
      "versions": [
        "1.3.14"
      ],
      "cohesion": 1,
      "rank": 0.15,
      "workaround": null,
      "exemplars": [
        {
          "title": "bun:sqlite: statically link Bun's bundled SQLite on macOS too (instead of Apple's system libsqlite3.dylib)",
          "url": "https://github.com/oven-sh/bun/issues/38772",
          "author": "maharshi365",
          "created_at": "2026-08-15 00:42:13+00"
        },
        {
          "title": "bun:sqlite: statically link Bun's bundled SQLite on macOS too (instead of Apple's system libsqlite3.dylib)",
          "url": "https://github.com/oven-sh/bun/issues/38647",
          "author": "maharshi365",
          "created_at": "2026-08-14 19:09:11+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/5934",
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      "theme": null
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    {
      "id": 12195,
      "product": "bun",
      "kind": "request",
      "title": "Native Svelte support in bun lint and bun check",
      "short_name": "Native Svelte lint and check",
      "named": true,
      "status": "open",
      "description": "`.svelte` files are handed to the installed ESLint, and `bun check` only reads `.ts`/`.js` files, so components need `svelte-check`.",
      "quote": "`bun check`**: only reads `.ts`/`.js` files, so components still need `svelte-check`.",
      "affected_surface": "bun lint, bun check",
      "error_signature": null,
      "job": "When I lint and type check a SvelteKit app with Bun, I want `.svelte` files parsed and checked natively as `bun fmt` does, so I can get the speedup without keeping ESLint and `svelte-check` installed.",
      "impact_class": null,
      "others": 1,
      "reports": 1,
      "reporters": 12,
      "voters": 11,
      "first_seen": "2026-10-13 14:47:52+00",
      "last_seen": "2026-10-13 14:47:52+00",
      "platforms": [],
      "versions": [],
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      "rank": 4.68,
      "workaround": null,
      "exemplars": [
        {
          "title": "`bun lint`, `bun check`: native Svelte support, as `bun fmt` has",
          "url": "https://github.com/oven-sh/bun/issues/45163",
          "author": "jose-manuel-silva",
          "created_at": "2026-10-13 14:47:52+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/12195",
      "area": null,
      "theme": null
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    {
      "id": 21032,
      "product": "bun",
      "kind": "request",
      "title": "Run format and lint fix on save in VS Code",
      "short_name": "Format and lint on save",
      "named": true,
      "status": "open",
      "description": "Reporter wants `bun fmt` and `bun lint --fix` executed on save; the alternative considered is the Biome extension.",
      "quote": "execute `bun fmt` and `bun lint --fix` on save in vscode",
      "affected_surface": "VS Code extension",
      "error_signature": null,
      "job": "When I save a file in VS Code, I want `bun fmt` and `bun lint --fix` to run automatically, so I can keep code formatted and linted without relying on the Biome extension.",
      "impact_class": null,
      "others": 1,
      "reports": 1,
      "reporters": 11,
      "voters": 10,
      "first_seen": "2026-10-24 16:57:28+00",
      "last_seen": "2026-10-24 16:57:28+00",
      "platforms": [],
      "versions": [],
      "cohesion": null,
      "rank": 4.46,
      "workaround": null,
      "exemplars": [
        {
          "title": "feat: fmt/lint on save in vscode",
          "url": "https://github.com/oven-sh/bun/issues/46767",
          "author": "ianzone",
          "created_at": "2026-10-24 16:57:28+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/21032",
      "area": null,
      "theme": null
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    {
      "id": 24853,
      "product": "bun",
      "kind": "request",
      "title": "Security advisory for compromised eMudhra CA in older versions",
      "short_name": null,
      "named": true,
      "status": "open",
      "description": "Every version prior to 1.4.4 is susceptible to traffic interception/MITM; `--use-system-ca` unions rather than intersects CA certs.",
      "quote": "In the interest of helping people upgrade as quickly as possible, I think it would be helpful for Bun to publish a security advisory.",
      "affected_surface": "bundled CA certificates",
      "error_signature": null,
      "job": "When I run a Bun version affected by the compromised eMudhra intermediate CA certificates, I want a published security advisory with high or critical severity, so I can know to upgrade as quickly as possible.",
      "impact_class": null,
      "others": 1,
      "reports": 1,
      "reporters": 10,
      "voters": 9,
      "first_seen": "2026-10-22 15:17:34+00",
      "last_seen": "2026-10-22 15:17:34+00",
      "platforms": [],
      "versions": [
        "1.4.3"
      ],
      "cohesion": null,
      "rank": 3.97,
      "workaround": null,
      "exemplars": [
        {
          "title": "Please create a security advisory for Bun <=1.4.3",
          "url": "https://github.com/oven-sh/bun/issues/46526",
          "author": "woodruffw",
          "created_at": "2026-10-22 15:17:34+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/24853",
      "area": null,
      "theme": null
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    {
      "id": 24271,
      "product": "bun",
      "kind": "request",
      "title": "Use Bun's TypeScript checker for VS Code diagnostics",
      "short_name": "Bun checker in VS Code",
      "named": true,
      "status": "open",
      "description": "VS Code runs its own copy of TypeScript, so users must keep it aligned with the `bun check` checker.",
      "quote": "`bun check` gives Bun a built-in TypeScript checker, but VS Code still has to use a separate TypeScript SDK for diagnostics and IntelliSense.",
      "affected_surface": "VS Code",
      "error_signature": null,
      "job": "When I edit TypeScript in VS Code on a Bun project, I want to select the same checker behind `bun check` through `js/ts.tsdk.path`, so I can avoid maintaining two TypeScript toolchains and keeping their versions aligned.",
      "impact_class": null,
      "others": 1,
      "reports": 1,
      "reporters": 5,
      "voters": 4,
      "first_seen": "2026-11-02 21:55:22+00",
      "last_seen": "2026-11-02 21:55:22+00",
      "platforms": [],
      "versions": [],
      "cohesion": null,
      "rank": 3.88,
      "workaround": null,
      "exemplars": [
        {
          "title": "Support VS Code js/ts.tsdk.path with Bun TypeScript checker (bun check)",
          "url": "https://github.com/oven-sh/bun/issues/47791",
          "author": "rubenferreira97",
          "created_at": "2026-11-02 21:55:22+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/24271",
      "area": null,
      "theme": null
    },
    {
      "id": 7427,
      "product": "bun",
      "kind": "request",
      "title": "Reuse type-check work across separate bun check runs",
      "short_name": "Persistent bun check cache",
      "named": true,
      "status": "open",
      "description": "Opt-in persistent cache so unchanged project-reference dependencies are not checked again by independent processes in a monorepo task graph.",
      "quote": "`bun check` currently checks the whole project on every invocation and does not write `.tsbuildinfo`, even with `incremental` enabled.",
      "affected_surface": "bun check",
      "error_signature": null,
      "job": "When I run bun check --build per workspace in a monorepo task graph, I want an opt-in persistent cache of prior type-check work, so I can avoid shared sources being checked repeatedly and speed up local checks after small edits.",
      "impact_class": null,
      "others": 1,
      "reports": 1,
      "reporters": 8,
      "voters": 7,
      "first_seen": "2026-10-08 12:49:48+00",
      "last_seen": "2026-10-08 12:49:48+00",
      "platforms": [],
      "versions": [
        "1.4.3-canary.1"
      ],
      "cohesion": null,
      "rank": 2.76,
      "workaround": null,
      "exemplars": [
        {
          "title": "bun check: optional persistent incremental type-check caching",
          "url": "https://github.com/oven-sh/bun/issues/44776",
          "author": "jakeleventhal",
          "created_at": "2026-10-08 12:49:48+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/7427",
      "area": null,
      "theme": null
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    {
      "id": 5627,
      "product": "bun",
      "kind": "request",
      "title": "Allow trusted Host names on the HMR dev server",
      "short_name": "Allow extra dev server hosts",
      "named": true,
      "status": "open",
      "description": "Host protections are hard coded, so tunnels, LAN names, lvh.me or reverse proxies get \"403 Blocked\" unless HMR is off.",
      "quote": "lvh.me is a well known alias for localhost but it's not allowed",
      "affected_surface": "Bun.serve dev server",
      "error_signature": "403 Blocked: Host header does not match the dev server",
      "job": "When I reach my HMR dev server through a tunnel, LAN name, reverse proxy or a domain like lvh.me, I want to set a list of hosts I trust or disable rebinding protection, so I can keep HMR on while testing with those names.",
      "impact_class": null,
      "others": 2,
      "reports": 2,
      "reporters": 5,
      "voters": 3,
      "first_seen": "2026-08-30 06:53:31+00",
      "last_seen": "2026-10-29 05:50:39+00",
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      "versions": [
        "1.4.4"
      ],
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      "rank": 2.63,
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        {
          "title": "Bun.serve development: allow extra Host names for HMR (allowedHosts)",
          "url": "https://github.com/oven-sh/bun/issues/47325",
          "author": "productdevbook",
          "created_at": "2026-10-29 05:50:39+00"
        },
        {
          "title": "Dev server doesn't allow using lvh.me",
          "url": "https://github.com/oven-sh/bun/issues/40946",
          "author": "SampsonCrowley",
          "created_at": "2026-08-30 06:53:31+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/5627",
      "area": null,
      "theme": null
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      "id": 20698,
      "product": "bun",
      "kind": "request",
      "title": "Keep the author's line breaks when formatting code",
      "short_name": "Keep author's line breaks",
      "named": true,
      "status": "open",
      "description": "bun fmt joins any construct that fits within printWidth onto one line, except object literals, unlike dprint or gofmt.",
      "quote": "Teams on that style can't switch to `bun fmt`: the first run joins every intentional break and they can't get that layout back.",
      "affected_surface": "bun fmt",
      "error_signature": null,
      "job": "When I format code with bun fmt, I want it to keep the multi-line layout I chose and still wrap lines over the width, so I can switch from dprint without losing intentional line breaks.",
      "impact_class": null,
      "others": 1,
      "reports": 1,
      "reporters": 4,
      "voters": 3,
      "first_seen": "2026-10-23 16:35:25+00",
      "last_seen": "2026-10-23 16:35:25+00",
      "platforms": [],
      "versions": [
        "1.4.4"
      ],
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      "rank": 1.88,
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        {
          "title": "`bun fmt`: an option to keep the author's line breaks (dprint `maintain` / gofmt style)",
          "url": "https://github.com/oven-sh/bun/issues/46603",
          "author": "xseman",
          "created_at": "2026-10-23 16:35:25+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/20698",
      "area": null,
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    },
    {
      "id": 22624,
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      "title": "Lint shell scripts with a built-in command",
      "short_name": "Lint shell scripts",
      "named": true,
      "status": "open",
      "description": "Proposed as a command like lint/fmt/check or as shell script support to the linter, covering regular sh files.",
      "quote": null,
      "affected_surface": "linter",
      "error_signature": null,
      "job": "When I lint the shell scripts in my repo, I want shell script support in Bun's linter, so I can replace shellcheck fully.",
      "impact_class": null,
      "others": 2,
      "reports": 2,
      "reporters": 2,
      "voters": 0,
      "first_seen": "2026-10-28 23:53:51+00",
      "last_seen": "2026-11-04 14:29:33+00",
      "platforms": [],
      "versions": [],
      "cohesion": 0.76,
      "rank": 0.95,
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      "exemplars": [
        {
          "title": "Add shellcheck command",
          "url": "https://github.com/oven-sh/bun/issues/47927",
          "author": "Gobd",
          "created_at": "2026-11-04 14:29:33+00"
        },
        {
          "title": ".sh (shell) in linter",
          "url": "https://github.com/oven-sh/bun/issues/47270",
          "author": "7heMech",
          "created_at": "2026-10-28 23:53:51+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/22624",
      "area": null,
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      "id": 5735,
      "product": "bun",
      "kind": "request",
      "title": "Configure or disable CSS lowering for modern browser targets",
      "short_name": "Configure or disable CSS lowering",
      "named": true,
      "status": "open",
      "description": "Bun.build and the CSS bundler lower syntax like oklch() using fixed built-in browser targets with no way to opt out.",
      "quote": "`Bun.build` downlevels modern CSS colors into three-tier fallbacks and offers no way to say \"my users have modern browsers, skip it\".",
      "affected_surface": "CSS bundler",
      "error_signature": null,
      "job": "When I bundle CSS for projects that target a newer browser baseline, I want to set CSS browser targets or disable syntax lowering, so I can ship modern CSS syntax unchanged without minified output growing larger than the input.",
      "impact_class": null,
      "others": 2,
      "reports": 2,
      "reporters": 2,
      "voters": 0,
      "first_seen": "2026-08-22 22:31:33+00",
      "last_seen": "2026-08-24 16:48:52+00",
      "platforms": [
        "macos"
      ],
      "versions": [
        "92.73"
      ],
      "cohesion": 0.8,
      "rank": 0.61,
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      "exemplars": [
        {
          "title": "Bun.build has no way to set CSS browser targets, so oklch() is always downlevelled (minified output larger than input)",
          "url": "https://github.com/oven-sh/bun/issues/40361",
          "author": "oddharsh",
          "created_at": "2026-08-24 16:48:52+00"
        },
        {
          "title": "Allow configuring or disabling CSS syntax lowering",
          "url": "https://github.com/oven-sh/bun/issues/40133",
          "author": "lekoala",
          "created_at": "2026-08-22 22:31:33+00"
        }
      ],
      "url": "https://rapsheet.dev/sheets/bun/issues/5735",
      "area": null,
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    },
    {
      "id": 4426,
      "product": "bun",
      "kind": "request",
      "title": "Apply test settings to files selected by glob pattern",
      "short_name": "Test settings by glob pattern",
      "named": true,
      "status": "open",
      "description": null,
      "quote": "There is no key to *include* test files by pattern.",
      "affected_surface": "bun test config",
      "error_signature": null,
      "job": "When I run DOM component tests and server tests in one monorepo, I want isolate, include patterns and preload set per file glob in bunfig.toml, so I can run them without repeating flags in every package script.",
      "impact_class": null,
      "others": 2,
      "reports": 2,
      "reporters": 1,
      "voters": 0,
      "first_seen": "2026-10-06 18:40:29+00",
      "last_seen": "2026-10-06 18:40:37+00",
      "platforms": [
        "macos"
      ],
      "versions": [
        "1.4.2"
      ],
      "cohesion": 0.79,
      "rank": 0.39,
      "workaround": null,
      "exemplars": [
        {
          "title": "bunfig.toml: add `test.isolate` and a test file `include` pattern",
          "url": "https://github.com/oven-sh/bun/issues/44643",
          "author": "jakeleventhal",
          "created_at": "2026-10-06 18:40:37+00"
        },
        {
          "title": "bun test: per-file test environment (preload and isolate selected by glob), so DOM and server tests can share one run",
          "url": "https://github.com/oven-sh/bun/issues/44642",
          "author": "jakeleventhal",
          "created_at": "2026-10-06 18:40:29+00"
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          "author": "bompus",
          "created_at": "2026-09-27 03:28:01+00"
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      "last_seen": "2026-08-15 20:29:17+00",
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          "created_at": "2026-08-15 20:29:17+00"
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          "created_at": "2026-09-16 00:11:04+00"
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      "last_seen": "2026-08-23 01:57:39+00",
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          "author": "maharshi365",
          "created_at": "2026-08-23 01:57:39+00"
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          "title": "Implement Promise.allKeyed and Promise.allSettledKeyed (TC39 await dictionary proposal)",
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      "description": "Long and multiline strings are emitted as single-line quoted strings; reporters want block scalars or a lineWidth option.",
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      "affected_surface": "Bun.YAML.stringify",
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          "title": "Feature request: support `lineWidth` option in YAML.stringify() to wrap long scalar values",
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          "title": ".",
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