It's nothing more than React already knowing exactly _which_ component it's working on rendering. See my other comment here: https://news.ycombinator.com/item?

It's nothing more than React already knowing exactly _which_ component it's working on rendering. See my other comment here: https://news.ycombinator.com/item?id=18306957 https://news.ycombinator.com/item?id=18306957