feat(types): support custom VitePreloadErrorEvent

[btea]

Description

close #17508

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[MathiasWP]

Would it also be relevant to cast the actual error being thrown in https://github.com/vitejs/vite/blob/main/packages/vite/src/node/plugins/importAnalysisBuild.ts#L148

Doing something like this in the importAnalysisBuild.ts file:

const e: VitePreloadErrorEvent = new Event('vite:preloadError', { cancelable: true })
e.payload = err
window.dispatchEvent(e)
if (!e.defaultPrevented) {
    throw err
}

I think that will also make it possible to remove the // @ts-expect-error comment

[btea]

As @MathiasWP said, do you think we need to customize a VitePreloadErrorEvent type to remove ts comments? @bluwy

[bluwy]

As @MathiasWP said, do you think we need to customize a VitePreloadErrorEvent type to remove ts comments? @bluwy

If it's possible to cast then that would be great, but I don't know if there's complications doing that when the types come from client.d.ts. I don't mind if not either.

[btea]

The type is not complicated, it is simpler to just declare one.

[curtdept]

Feedback for whoever, in typescript this makes is more complicated to spyOn as there is now a colliding overload.