vscode extension fails with new refactoring "move to file"

[SantoJambit]

Initial checklist

• I read the support docs
• I read the contributing guide
• I agree to follow the code of conduct
• I searched issues and couldn’t find anything (or linked relevant results below)

Affected packages and versions

1.8.2

Link to runnable example

No response

Steps to reproduce

• Install the extension
• create an .mdx file and two .ts files
• try to move something from one ts file to another via the new refactoring "move to file"
• observe the error shown by vscode

Expected behavior

vscode should show the file selection popup (it does without the extension installed)

Actual behavior

An error pops up:

TypeScript Server Error (5.4.2)
Debug Failure. File /.../file.mdx has unknown extension.
Error: Debug Failure. File /.../file.mdx has unknown extension.
at extensionFromPath (/.../node_modules/typescript/lib/tsserver.js:21381:39)
at /.../node_modules/typescript/lib/tsserver.js:147260:33
at mapDefined (/.../node_modules/typescript/lib/tsserver.js:2680:22)
at Proxy.getMoveToRefactoringFileSuggestions (/.../node_modules/typescript/lib/tsserver.js:147259:19)
at IpcIOSession.getMoveToRefactoringFileSuggestions (/.../node_modules/typescript/lib/tsserver.js:187171:41)
at getMoveToRefactoringFileSuggestions (/.../node_modules/typescript/lib/tsserver.js:185370:43)
at /.../node_modules/typescript/lib/tsserver.js:187524:69
at IpcIOSession.executeWithRequestId (/.../node_modules/typescript/lib/tsserver.js:187516:14)
at IpcIOSession.executeCommand (/.../node_modules/typescript/lib/tsserver.js:187524:29)
at IpcIOSession.onMessage (/.../node_modules/typescript/lib/tsserver.js:187566:51)
at process. (/.../node_modules/typescript/lib/tsserver.js:189175:14)
at process.emit (node:events:514:28)
at emit (node:internal/child_process:937:14)
at process.processTicksAndRejections (node:internal/process/task_queues:83:21)

Runtime

Other (please specify in steps to reproduce)

Package manager

Other (please specify in steps to reproduce)

OS

Linux

Build and bundle tools

Other (please specify in steps to reproduce)

[github-actions]

Hi! This was marked as ready to be worked on! Note that while this is ready to be worked on, nothing is said about priority: it may take a while for this to be solved.

Is this something you can and want to work on?

Team: please use the area/* (to describe the scope of the change), platform/* (if this is related to a specific one), and semver/* and type/* labels to annotate this. If this is first-timers friendly, add good first issue and if this could use help, add help wanted.

[johnsoncodehk]

This is also a debug error encountered by @Princesseuh in astro language tools. It needs to be solved upstream. I will open an issue to TypeScript.

[Princesseuh]

Yep, here's the corresponding issue withastro/language-tools#812 in Astro