Bun napi panic

[Miosp]

What version of Bun is running?

1.1.22

What platform is your computer?

Microsoft Windows NT 10.0.22631.0 x64 (also linux on fedora 40)

What steps can reproduce the bug?

Run my vite dev server with bunx --bun vite dev. After that the dev server starts and displays initial message normally but after opening the link in the browser it crashes.

Unfortunately the bug is not reproducible with bun's vite demo.

What is the expected behavior?

Dev server serves requests.

What do you see instead?

thread '' panicked at napi\src\threadsafe_function.rs:235:57:
called Result::unwrap() on an Err value: Error { status: InvalidArg, reason: "expect Function, got: Object", maybe_raw: 0x0 }
stack backtrace:
0: 0x7ffc5fd383dd - napi_register_module_v1
1: 0x7ffc5f558fad -
2: 0x7ffc5fd2dbb1 - napi_register_module_v1
3: 0x7ffc5fd3a1ca - napi_register_module_v1
4: 0x7ffc5fd39a99 - napi_register_module_v1
5: 0x7ffc5fd3a900 - napi_register_module_v1
6: 0x7ffc5fd3a3f9 - napi_register_module_v1
7: 0x7ffc5fd3a339 - napi_register_module_v1
8: 0x7ffc5fd3a322 - napi_register_module_v1
9: 0x7ffc5fd3c367 - napi_register_module_v1
10: 0x7ffc5fd3c8b3 - napi_register_module_v1
11: 0x7ffc5fcffba1 -
12: 0x7ff7688f58c8 - napi_remove_async_cleanup_hook
13: 0x7ff7688f2cfb - napi_remove_async_cleanup_hook
14: 0x7ff768497174 -
15: 0x7ff7683c75d5 -
16: 0x7ff76aa8d77b - uv_getnameinfo
17: 0x7ff76834a975 -
18: 0x7ff7684b0573 -
19: 0x7ff76834e242 -
20: 0x7ff768303aba -
21: 0x7ff768302da0 -
22: 0x7ff7680621bc -
23: 0x7ff76806117b -
24: 0x7ff76ad7e74c - node::RemoveEnvironmentCleanupHook
25: 0x7ffd3408257d - BaseThreadInitThunk
26: 0x7ffd3500af28 - RtlUserThreadStart
error: script "dev" exited with code 9

Additional information

The behavior on my linux machine is the same.

I upgraded from Bun 1.1.17, which had no issues.

[Jarred-Sumner]

Does this still occur in Bun v1.1.27?

[Miosp]

I think it v1.1.27 fixed the issue both on windows and linux. Nice!

[Miosp]

Sorry, for the confusion. It actually still happens. Just this time it is a bit delayed, so in my quick testing the issue did not occur (middle of the night).

[haxibami]

I have a similar problem with the following sample project, which uses Astro & lightningcss.

https://github.com/haxibami/bun-sample

When I remove lightningcss or just use bun run dev (instead of bun --bun run dev), the error disappears. It also doesn't happen with Bun v1.1.20 or lower.

thread '<unnamed>' panicked at napi/src/threadsafe_function.rs:235:57:
called `Result::unwrap()` on an `Err` value: Error { status: InvalidArg, reason: "expect Function, got: Object", maybe_raw: 0x0 }
stack backtrace:
   0:      0x98379637713 - <unknown>
   1:      0x98378e47ad0 - <unknown>
   2:      0x9837960b722 - <unknown>
   3:      0x983796391ee - <unknown>
   4:      0x98379638970 - <unknown>
   5:      0x98379639b37 - <unknown>
   6:      0x98379639540 - <unknown>
   7:      0x98379639496 - <unknown>
   8:      0x9837963948f - <unknown>
   9:      0x98378e29414 - <unknown>
  10:      0x98378e298c2 - <unknown>
  11:      0x983795e2dbe - <unknown>
  12:          0x3330fbc - <unknown>
  13:          0x332e94c - <unknown>
  14:          0x2f0fe3a - <unknown>
  15:          0x2e22c15 - <unknown>
  16:          0x3dd9bab - <unknown>
error: script "dev" was terminated by signal SIGABRT (Abort)
zsh: IOT instruction (core dumped)  RUST_BACKTRACE=full bun --bun run dev

[Miosp]

i use lightning css too, so that may be a good starting point

[haxibami]

#13771 (pure Vite + lightningcss) looks similar, but the error seems to be caused by adding css.lightningcss.visitor in Vite config, not just using lightningcss (css.transformer).