Samuel
@samuel.fm
also this is nuts
React@react.dev· 1 Oct 2025
Performance Tracks are a new set of custom tracks in performance profiles that show more info about your React app. They include a Scheduler track that shows the priority of what React is working on, and a Components track to show which component is being worked on. react.dev/reference/de...
Screenshot of react performance tracks
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Samuel
activity is absolutely huge for RN though, since you have to basically keep every screen in the history mounted. now they can be deprioritised without using hacks like react-freeze
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Kuba Suder 🇵🇱🇺🇦
Is this in any way related to this thing where you guys fixed this issue where clicking on a sidebar item reset the browser nav stack, but then had to roll it back because memory was going boom?…