In React v6, how to check form is dirty before leaving page/route

I want a prompt to appear at the moment of wanting to leave the page without having canceled or without having sent the changes

As of v6.0.0-beta - useBlocker and usePrompt were removed I want to know another way to do it.

This doesn't work anymore:

<Promptwhen={formik.dirty}message="You have unsaved changes. Are you sure you want to leave?"/>

Nor this:

useBlocker(() => "Hello from useBlocker -- are you sure you want to leave?",isBlocking);