Expose the RenderedChunk typing for plugin authors to more easily consume

[Codex-]

Description

I've been working on adding some functionality via a plugin to inject generated CSS via JS per file, and have found that the viteMetadata prop on the OutputChunk type (presumably now a RenderedChunk is perfect for leveraging to do this, however it feels a bit dodgy to access it with any.

https://github.com/vitejs/vite/blob/main/packages/vite/src/node/index.ts#L144

declare module 'rollup' {
  export interface RenderedChunk {
    viteMetadata: ChunkMetadata
  }
}

Suggested solution

Is this type meant to be used? Is it stable? Is it meant to be exported already?

Alternative

No response

Additional context

No response

Validations

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• 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.

[bluwy]

Yes the viteMetadata API is public so you can use it. We could re-export RenderedChunk but that's only one of Rollup's types and we can get more request to re-export more of Rollup's types, which isn't scalable. You could do something like:

type ToFn<T> = T extends (...args: any[]) => any ? T : never
type RenderedChunk = Parameters<ToFn<Plugin['renderChunk']>>[1]

to access it for now though.

However I noticed another issue with this (which maybe is also the core issue you're mentioning) that is the viteMetadata type is still not exposed this way. I've fixed it at #11511

[Codex-]

Fantastic, thanks for raising that PR, that's exactly what I'm after :)