getUserDate and setUserDate are deprecated #28
Description
There are a lot of warnings in the browser console because of the use of these two deprecated functions:
Use of getUserData() or setUserData() is deprecated. Use WeakMap or element.dataset instead.
It is written here https://developer.mozilla.org/de/docs/Web/API/Node/setUserData that there are two possibilities to update them:
The Node.getUserData and Node.setUserData methods are no longer available from Web content. Element.dataset or WeakMap can be used instead.
Any ideas what we might want to in scaffold with these deprecated functions?