feat(worker): support worker format, plugins and rollupOptions (#6191)

[poyoho]

Description

fix: #6191

Additional context

shallow copy of the plugin config

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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• Read the Contributing Guidelines.
• Read the Pull Request Guidelines and follow the Commit Convention.
• Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
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[poyoho]

Duplicate of #6243

[poyoho]

@egasimus @patak-dev new PR here!👋

[patak-dev]

Thanks @poyoho!

[egasimus]

@patak-dev Sorry if offtopic, but does this mean a new release soon? Can't seem to get Vite from Git working with my setup and I'm really eager to try this out.

[patak-dev]

@egasimus this will be part of vite 2.8. We plan to release vite@2.8.0-beta.0 during the next week if everything goes right

[eyun-tv]

seems not work ? I use coffeescript and vite v2.8.0-beta.3
I added worker and rollup-plugin-coffee2 in config

I forked the vite and write a demo error code in there :
main...eyun-tv:main

[patak-dev]

Hey @eyun-tv! Thanks for testing this feat! Would you create an issue with that demo as a minimal reproduction so we can better track this bug? (if you can, you can upload it in https://vite.new)

[eyun-tv]

see this
https://stackblitz.com/edit/vite-lite?devtoolsheight=33&file=main.coffee

[patak-dev]

Thanks for the reproduction @eyun-tv, please create a new bug report with it so we can properly track it.

[poyoho]

hi @eyun-tv

I think maybe the error in coffee plugin

coffee = (config = {}) => {
    return {
      name: 'coffee',
      transform: function(src, id) {
        var code, map;
        if (/\.coffee$/.test(id)) {
          ({
            js: code,
            sourceMap: map
          } = CoffeeScript.compile(src, config));
          return {code, map};
        }
      }
    };
  };

vite will resolve the request id to worker.coffee?worker, so the plugins no work 🤔