Syntax errors in playground sometimes trigger `ENOENT: /static/playground.res, no such file or directory` error

When using `v12.0.0-alpha.14` on the playground, syntax errors sometimes trigger the error `ENOENT: /static/playground.res, no such file or directory`.

I haven't been able to reproduce this issue in `v12.0.0-alpha.13` or earlier versions.

![Image](https://github.com/user-attachments/assets/d155c621-91ff-4b61-ae3b-58e8c9b1ff0d)

---

By setting the `--debug-info` jsoo flag, I've narrowed it down to `protect_refs` (line 51) from `misc.ml`:  https://github.com/rescript-lang/rescript/blob/3079bdb063e002192c2ff57573f021e67be814c1/compiler/ext/misc.ml#L41-L52

Only two functions call protect_refs: `Env.without_cmis` and `Warnings.without_warnings`

	let protect_refs =
	let set_refs l = List.iter (fun (R (r, v)) -> r := v) l in
	fun refs f ->
	let backup = List.map (fun (R (r, _)) -> R (r, !r)) refs in
	set_refs refs;
	match f () with
	\| x ->
	set_refs backup;
	x
	\| exception e ->
	set_refs backup;
	raise e

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

Syntax errors in playground sometimes trigger `ENOENT: /static/playground.res, no such file or directory` error #7583

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Syntax errors in playground sometimes trigger ENOENT: /static/playground.res, no such file or directory error #7583

Description

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions

Syntax errors in playground sometimes trigger `ENOENT: /static/playground.res, no such file or directory` error #7583