Incorrect type declaration

[TakhirKudusov]

Hi!
I try to use your library and found out that the return type of useFileUpload has one mistake.
It's first element of returned array - FileUpload | [FileUpload].
This hook does not return tupple [FileUpload] when multiple is true. This hook return FileUpload[] and that's a big difference, because [FileUpload] can have only one element, not two or three, etc.

I fixed this for me in such manner:

uploadFile(
      {
        multiple: true,
        accept: ['image/jpeg', 'image/jpg', 'image/png'],
      },
      (files) => {
       // the fix is below
        const result = (files as FileUpload[]).map((el) => ({
          ...el,
          id: v1(),
        }));
      },
    );

But I think you can make type system for this library better. Thanks!