fix: export OptionalFetcher and RequiredFetcher types

[IderAghbal]

I hit a similar issue to #4001 (ts(2742)) but on pnpm, which requires exporting the types all the way to the module that gets directly imported by the application according to microsoft/TypeScript#47663 (comment).
This fix resolves this issue.

[schiller-manuel]

also needed in solid-start-client I guess?

[IderAghbal]

Ah, indeed! Sorry for only focusing on React, as it's what I am using.
Added now.

[nx-cloud]

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---

☁️ Nx Cloud last updated this comment at 2025-06-04 15:10:28 UTC

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commit: bf9c02c