* add optional `start` and `end` events to `useTransitionData`
This will be used when we implement the `<Transition />` component
purely using the `useTransitionData` information. But because there is a
hierarchy between `<Transition />` and `<TransitionChild />` we need to
know when transitions start and end.
* implement `<Transition />` and `<TransitionChild />` on top of `useTransitionData()`
* update tests
Due to a timing issue bug, we updated the snapshot tests in
https://github.com/tailwindlabs/headlessui/pull/3273 incorrectly so this
commit fixes that which is why there are a lot of changes.
Most tests have `show={true}` but not `appear` which means that they
should _not_ transition which means that no data attributes should be
present.
* wait a microTask to ensure that `prepare()` has the time to render
Now that we set state instead of mutating the DOM directly we need to
wait a tiny bit and then we can trigger the transition to ensure
a smooth transition.
* cleanup `prepareTransition` now that it returns a cleanup function
* move `waitForTransition` and `prepareTransition` into `useTransitionData`
* remove existing `useTransition` hook and related utilities
* rename `useTransitionData` to `useTransition`
* update changelog
* Update packages/@headlessui-react/src/components/transition/transition.tsx
Co-authored-by: Jordan Pittman <jordan@cryptica.me>
* add missing `TransitionState.Enter`
This makes sure that the `Enter` state is applied initially when it has
to.
This also means that we can simplify the `prepareTransition` code again
because we don't need to wait for the next microTask which made sure
`TransitionState.Enter` was available.
* add transition playground page with both APIs
* update tests to reflect latest bug fix
---------
Co-authored-by: Jordan Pittman <jordan@cryptica.me>
Robin Malfait
29e7d94503