[Feature Request] Support URLs as model URI (for URL imports)

[tzvc]

Context

• This issue is not a bug report. (please use a different template for reporting a bug)
• This issue is not a duplicate of an existing issue. (please use the search to find existing issues)

Description

Hi there,

I'm building a web IDE for Deno which supports URL imports:

// valid in deno
import { serve } from "https://deno.land/std@v0.24.0/http/server.ts";
// serve is fully typed here

This is not yet supported by Typescript so I have to make a custom logic into monaco.

My first thought was: When I detect a URL import in the code, fetch the URL and compile all the sources into one big .d.ts file. Then, load that file into the editor with .addExtraLib specifying the URL as the filepath.

const source = await fetch(URLImport).then((r) => r.text());
monaco.languages.typescript.javascriptDefaults.addExtraLib(source, URLImport);
monaco.editor.createModel(source, 'typescript', monaco.Uri.parse(URLImport));

I thought this would be enough for monaco to "link" the import URL with the type definition now loaded locally at that address, but it appears not.

What am I missing here? If this is not possible this way, what could I try to support URL imports in TS in monaco?

Cheers!