Shouldn't handleSubmit return () => void?

[fakkio]

Since the form tag's onSubmit attribute is of type FormEventHandler<HTMLFormElement> = (e: FormEvent<HTMLFormElement>) => void, shouldn't handleSubmit() also return that type instead of (e: ...) =>Promise<void>?

Is there a reason why the return type is like this?

Fabio.

[Moshyfawn]

handleSubmit manages various submission states, including the isSubmitting state. When the submission operation is asynchronous and represented as a promise, the isSubmitting state is set to true until the promise resolves; Same goes for the successful / erroneous states.

[fakkio]

Sure, I see, but the promise can be ran, resolved or rejected even without it being returned by the function, isn't it?
I don't understand what advantage there is in returning a promise which will then be completely ignored by the form tag and which then creates problems with eslint's stricter rules.