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what the fuck does this mean
The article was a whole lot of nothing, but TIL that React doesn't already merge/coalesce overlapping `setState` operations. Sounds like Fiber will start doing that.
React does merge setState if they are within an event handler. It goes that more aggressively in Fiber though because setState is deferred.
Google release demos and products before they advertise them. Unlike Facebook.
Fiber is in React master, you are welcome to try it any day. It's not ready yet though ;-)