Support loading jsr module specifiers and transpile its commonjs dependencies

Description

As a developer using Vite and jsr.io I would like to be able to load module specifiers such as npm:@iconify-icon/react@^3.0.0/dist/iconify.mjs in Vite while using node and NPM.

The part that is not working, is picking up the module specifiers and then transpiling commonjs modules.

Suggested solution

Support loading specifiers such as npm:@iconify-icon/react@^3.0.0/dist/iconify.mjs by rewriting them to iconify-icon/react/dist/iconify.mjs and also triggering the commonjs plugin on it to transpile to the contents.

Alternative

I tried creating a plugin for this. For resolveId I was able to get it to work, however the commonjs part seems to be a separate process where it is statically calculated. Is this a correct assumption?

Additional context

Related issue on jsr repo:
https://github.com/jsr-io/jsr/issues/1097

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

Start by tracing Vite's resolveId handling for npm: module specifiers and how the CommonJS plugin statically identifies dependencies. Verify the related JSR example and determine how rewritten specifiers reach CommonJS transformation. Done means the stated iconify.mjs specifier loads in Vite and its CommonJS dependencies are transpiled.