how to scroll to bottom of a list at init

[xu33]

I'm using useVirtualizer, dynamic mode
Like a chat message list, i want to start at the bottom of the scroller
I currently do this, but the result is not at the bottom, i guess i shoud do this when the measument is end, but there isn't a event
useEffect(() => { rowVirtualizer.scrollToIndex(data.length - 1) }, [])