team Q&A
summary
Live Q&A covers concrete React 19 changes and rollout experience: guidance on useEffectEvent (advanced, linter-backed, don’t overuse), the new React compiler (Babel plugin that preserves useMemo/useCallback and has required handful of fixes across hundreds of thousands of components), and the new activity hidden mode (renders offscreen via display:none, unmounts effects, schedules work on a low‑priority queue, risk of extra memory for lots of DOM). Also governance details: Meta keeps extra votes that shrink annually; try canary builds and attach repro sandboxes.
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chapters (14)
- 0:00Welcome and introduction
- 1:53Favorite React 19 features
- 9:05React Foundation announcement
- 12:56React Compiler insights
- 17:55Activity feature deep dive
- 21:48Performance tools comparison
- 23:11Activity use cases
- 25:16Framework dependency in React
- 26:20Deleting useMemo and useCallback
- 28:28Meta’s role with React Foundation
- 30:14Opinionated store and React
- 33:45AI’s impact on React development
- 40:24How community can help React
- 43:17Gratitude and closing remarks
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