onBeforeEnter
onBeforeEnter: (el: Element) => void
onEnter
onEnter: (el: Element, done: () => void) => void
onAfterEnter
onAfterEnter: (el: Element) => void
onEnterCancelled
onEnterCancelled: (el: Element) => void
onBeforeLeave
onBeforeLeave: (el: Element) => void
onLeave
onLeave: (el: Element, done: () => void) => void
onAfterLeave
onAfterLeave: (el: Element) => void
onLeaveCancelled
onLeaveCancelled: (el: Element) => void
onMove
onMove: (el: Element) => void
TransitionGroup-only: called when an element moves due to reorder.