beforeTransitionEnds?

the swipper’s event “transitionEnd” works fair, the problem is that if I want to do some changes in the visible dom just before a transtion finish, for example, I want to remove 10 radio buttons. The “removal” action is very noticiable by the user, in other words, when the transition ends, the user will see the 10 radio buttons and in a flickering second they dont see them anymore.

Is there any sort of event “beforeTransitionEnd” or “transitionEndBeforeRefresh” so I can insert my code there?

I tested all the swipper’s methods, one by one, and none of them triggers just before transition ends.

Thanks