More precise return type of handleSubmit

[JonasDoe]

Is your feature request related to a problem? Please describe.
At the moment, when I do something like

const { handleSubmit } = useForm();
const handleData = (data) => sendData().catch(console.log);
return <form onSubmit={handleSubmit(handleData)}>...</form>

@typescript-eslint/no-misused-promises complains that: "Promise-returning function provided to attribute where a void return was expected.". But since my function doesn't return a Promise, that's not actually not the case here. The assumption comes from the type UseFormHandleSubmit, which returns a function with its result being just Promise<void> anyway.

Describe the solution you'd like
It would be great if the return value of FormSubmitHandler would be able to infer from the passed SubmitHandler whether the created callback actually returns a Promise or not.

Describe alternatives you've considered
I either have to disable the eslint rule for that line, or opt for a verbose solution as

onSubmit={(event) => void form.handleSubmit(onSubmit)(event)}

[Moshyfawn]

https://github.com/orgs/react-hook-form/discussions/9325#discussioncomment-4060566

[JonasDoe]

Thanks for the fast response! This feature sounds helpful, but I'm still wondering whether that's the best way to settle the issue. If it was possible that react-hook-form infered the return type properly, this would be more precise and probably less error prone. I mean, I my case the issue is not that I don't know how to to ignore a Promise, but that there's no Promise at all.
But if that's too hard to implement, nevermind. I'm not entitled to it anyway. :)

[vnugent]

I'm facing this same issue (originally posted here).

[crispyricepc]

FWIW, @typescript-eslint/no-misused-promises has rule exceptions setup specifically for JSX void promises like this, so disabling the rule for cases where a void promise is passed as an attribute to a JSX element (like this) can "fix" the problem.

"rules": {
  // ...
  "@typescript-eslint/no-misused-promises": ["error", { "checksVoidReturn": { "attributes": false } }],
}