Function finishLeave

packages/runtime-dom/src/components/Transition.ts:196–205

(
    el: Element & { _isLeaving?: boolean },
    done?: () => void,
  )

  }

  const finishLeave = (
    el: Element & { _isLeaving?: boolean },
    done?: () => void,
  ) => {
    el._isLeaving = false
    removeTransitionClass(el, leaveFromClass)
    removeTransitionClass(el, leaveToClass)
    removeTransitionClass(el, leaveActiveClass)
    done && done()
  }

  const makeEnterHook = (isAppear: boolean) => {
    return (el: Element, done: () => void) => {