Function checkScroll

src/MessageList/MessageList.tsx:21–32

()

  const prevProps = useRef(props)

  const checkScroll = () => {
    var e = referance
    if (!e || !e.current) return

    if (toBottomHeight === '100%' || (toBottomHeight && scrollBottom < toBottomHeight)) {
      e.current.scrollTop = e.current.scrollHeight // scroll to bottom
    } else {
      if (lockable === true) {
        e.current.scrollTop = e.current.scrollHeight - e.current.offsetHeight - scrollBottom
      }
    }
  }

  useEffect(() => {
    if (!referance) return