React Fiber Architecture: React's new core algorithm

github.com

48 pointsadamnemecek5 comments

Previous discussion: https://news.ycombinator.com/item?id=12243269

Actually re-rendering the entire app on each change only works for the most trivial apps; in a real-world app, it's prohibitively costly in terms of performance.

Is this true? Slamming HTML into a DOM is pretty fast as far as I can tell.[1]

It seems to me the advantage of DOM diff/swapping is the preservation of non-DOM state (input focus, inner scroll state, etc.)

[1] - http://intercoolerjs.org

Imagine swapping the entire HTML of Facebook.com when the user types a letter into a chat input box.

Right, of course, but that is an event that I would assume wouldn't require any sort of server communication or application redrawing (beyond what the native input widget already provides...)

And, if it does, it's not a situation I'm sure I would design a toolkit around...

Take an input that shows you the number of characters you typed or a form where the submit button is disabled until all required fields are filled in. These kinds of states might change on every keystroke and are not offered directly by a plain text input.

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