How to solve error 'Unhandled method window/workDoneProgress/create'

[newfish-cmyk]

I tried to replace pyright with typescript-language-server in the example code, but get errors

After doing some research, I found that

To keep the protocol backwards compatible servers are only allowed to use window/workDoneProgress/create request if the client signals corresponding support using the client capability window.workDoneProgress

However, I noticed that the original python example also has "workDoneProgress": "true" in the initialization. So why doesn't the python example cause errors, while using typescript-language-server does?
Any help troubleshooting would be great!

[kaisalmen]

Hi @newfish-cmyk can you share a repo with dependencies or a fork of this repo with the changed code, something we can build/use?

[newfish-cmyk]

https://github.com/newfish-cmyk/monaco-languageclient/tree/ts

here I simply installed typescript-language-server, and changed examples/src/python/server/direct.ts

and then, you can run the examples, click 'python'

[newfish-cmyk]

So a friend told me how to fix this:

You just gotta go into the file monaco-languageclient/node_modules/vscode-jsonrpc/lib/common/connection.js and delete line 540, which is:

replyError(new messages_1.ResponseError(messages_1.ErrorCodes.MethodNotFound, `Unhandled method ${requestMessage.method}`), requestMessage.method, startTime);

After that, the example starts working!

Seems like there's some kinda conflict between the client initialization and the websocket connection, but I still don't really get how to properly fix this for good. 😖

[kaisalmen]

@newfish-cmyk I haven't had time to look into this. New version of this lib is currently in the making.

[kaisalmen]

@newfish-cmyk the server sends "method":"window/workDoneProgress/create" directly and the client can't handle it and sends the error leading the server to crash. I don't really know typescript-language-server, so I can't help you there. I tried a couple of things, but was not able to prevent it from crashing. You could look at other client implementations (if there are ones, I did not search) or try another TS language server.

[newfish-cmyk]

thank you for your help and advice, I will give it a try

[tmisirpash]

We are also hitting this in one of our projects (specifically with typescript-language-server). Do you have any recommendations on where we can look to fix this, @kaisalmen ?