[Bug]: Error: Creating workers from remote extensions is currently not supported.

[bilogic]

Is there an existing issue for this?

• I have searched the existing issues

OS/Web Information

• Web Browser: Chrome
• Local OS: Windows 10
• Remote OS: Ubunu
• Remote Architecture: amd64
• code-server --version: 4.9.0 0502dfa with Code 1.73.1

Steps to Reproduce

1. Installed PHP Tools extension by devsense.com https://open-vsx.org/api/devsense/phptools-vscode/web/1.25.11540/file/DEVSENSE.phptools-vscode-1.25.11540@web.vsix
2. Extension is unable to run in code-server
3. Error given is Error: Creating workers from remote extensions is currently not supported.

Expected

PHP Tools extension should be able to install and run as it works in vscode.dev and github.dev

Actual

1. Extension is unable to run in code-server
2. Error given is Error: Creating workers from remote extensions is currently not supported.

Logs

No response

Screenshot/Video

Does this issue happen in VS Code or GitHub Codespaces?

• I cannot reproduce this in VS Code.
• I cannot reproduce this in GitHub Codespaces.

Are you accessing code-server over HTTPS?

• I am using HTTPS.

Notes

No response

[jsjoeio]

Interesting! I haven't seen this one before. @code-asher have you?

[bilogic]

I have been trying to fix this for about a week now. It is 100% reproducible.

I think it has something to do with this microsoft/vscode#144513

But I'm on the impression that the VSCode part of github/vscode.dev is entirely open sourced and same as code-server, so I'm surprised to know there is this difference. Would this be something that code-server can fix?

Thank you

[jsjoeio]

Hmm..if it works on github/vscode.dev then it's a bug in code-server and something we may be able to fix if we can figure out why it's happening.

[bilogic]

https://github.com/microsoft/vscode/blob/96bf637c101b8832e44a97a27a26305d8c2cf22e/src/vs/workbench/api/worker/extensionHostWorker.ts#L100-L103

@jsjoeio I located the error message in vscode, does it help?

[jsjoeio]

Definitely a step forward! Thank you! Thinking out loud for second here...

The Problem: extensions cannot create workers

What is a worker?
I assume it's referring to a web worker?

Can this be reproduced?
Yes, in code-server using this PHP extension.

Does this bug occur upstream?
No, at least not on github/vscode.dev so it's definitely possible to make work in code-server.

If someone picks this up, where should they start looking?
The error occurs here (thanks to @bilogic): https://github.com/microsoft/vscode/blob/96bf637c101b8832e44a97a27a26305d8c2cf22e/src/vs/workbench/api/worker/extensionHostWorker.ts#L100-L103

I'd also look into this: microsoft/vscode#144513 (comment)

[bilogic]

I thought it is helpful to include the actual code and comments here

https://github.com/microsoft/vscode/blob/96bf637c101b8832e44a97a27a26305d8c2cf22e/src/vs/workbench/api/worker/extensionHostWorker.ts#L100-L103

const _Worker = (<any>self).Worker;
Worker = <any>function (stringUrl: string | URL, options?: WorkerOptions) {
if (/^file:/i.test(stringUrl.toString())) {
	stringUrl = FileAccess.uriToBrowserUri(URI.parse(stringUrl.toString())).toString(true);
} else if (/^vscode-remote:/i.test(stringUrl.toString())) {
	// Supporting transformation of vscode-remote URIs requires an async call to the main thread,
	// but we cannot do this call from within the embedded Worker, and the only way out would be
	// to use templating instead of a function in the web api (`resourceUriProvider`)
	throw new Error(`Creating workers from remote extensions is currently not supported.`);
}

[code-asher]

One interesting difference is that the vscode.dev one is marked as a browser extension while on code-server it is marked as a remote extension.

For vscode.dev I used the extension panel to install but in code-server I had to install from vsix because from the extension panel it said the extension is not supported in web (which given this error appears to be true).

So one theory is that Open VSX is not serving the web version of this extension yet.

I tried installing in Codespaces from the command line (code --install-extension DEVSENSE.phptools-vscode) to force it to install the non-web version and I get a different error but it does not work there either.

I am not sure it actually works in vscode.dev either. Am I supposed to get intellisense for functions? I tried typing explode for example but nothing comes up.