"print" is not defined when connecting with the worker from pyright-browser

[ahmed-s-fatahallah]

Hello,

I am trying to implement a full browser example for python LSP but when I connect the worker returned from pyright-browser

I get an error highlighting for print() saying print is not defined

any idea why is this error happening ?

here is the part that I changed in the wrapper config

 const worker = new Worker(
        "./../../../../../node_modules/@typefox/pyright-browser/dist/pyright.worker.js"
    );
    // Send the `boot` request to the language server
    // This starts the language server and a nested worker that performs the language analysis.
    worker.postMessage({
        type: "browser/boot",
        mode: "foreground",
    });

    const wrapperConfig: WrapperConfig = {
        $type: "extended",
        htmlContainer: configParams.htmlContainer,
        logLevel: LogLevel.Debug,
        languageClientConfigs: {
            python: {
                name: "Python Language Server Example",
                connection: {
                    options: {
                        $type: "WorkerDirect",
                        worker: worker,
                    },
                },
                clientOptions: {
                    documentSelector: [configParams.languageId],
                    workspaceFolder: {
                        index: 0,
                        name: configParams.workspaceRoot,
                        uri: vscode.Uri.parse(configParams.workspaceRoot),
                    },
                },
            },
        },

here is the error

[msujew]

Hey @ahmed-s-fatahallah,

the pyright-browser package does not come with any builtins (i.e. also no print), as it does not have access to the file system. See also #561 (specially 1, 2, 3) which describes a solution for how to load builtins on startup.

Note that the pyright-browser package is effectively unmaintained and hasn't been updated in the last 2 years. I would recommend you to either build your own bundle or use a more popular fork of pyright which adds browser support.

[ahmed-s-fatahallah]

@msujew Thanks alot for your answer
I am trying to build my own browser based pyright, and integrate it with monaco editor but I am new to monaco-vscode-api thing and the documentation for integrating monaco editor with pyright especially through a web worker is scarce, so if you can recommend me any documentation/videos/blog posts to get familiar with monaco vscode apis and how to integrate them with LSPs like pyright, I would really appreciate it.

[msujew]

I don't think you will find much information beyond what is available in the respective repos. See also the examples in this repo.