LSP working outside of the workspace

[worksofliam]

I am starting to build a new LSP, but my first goal is to get it to work outside of the workspace.

Another extension registers a file system provider but register them into a workspace, but instead has a view to open files from it.

I can't seem to get the sample LSP (provided by Microsoft) to work on plain text files opened outside the workspace.

For example:

1. start debugging the extension and lsp
2. make sure no workspace is open
3. create a brand new plaintext document
4. expect LSP to work

I have tried playing with the capabilities props to see if I can get it started, but I've had no luck.

Any ideas?

[worksofliam]

From what I understand, an LSP should be able to work outside the workspace.

If I open a plain ts/js file without a workspace open, I still get the usual content assist and so on.

[worksofliam]

Looks like it does work outside the workspace, but files have to be saved locally if I am using TextDocuments.

const documents: TextDocuments<TextDocument> = new TextDocuments(TextDocument);

// Make the text document manager listen on the connection
// for open, change and close text document events
documents.listen(connection);

They actually documented here, but didn't read the guide... I just cloned!

https://code.visualstudio.com/api/language-extensions/language-server-extension-guide#incremental-text-document-synchronization