Modernizing Your React App: Compiler, useEffectEvent, Activity & Friends

Presentation byVitor Alencar

React has changed a lot in the last year: React 19, 19.1 and now 19.2 brought a stable React Compiler, new hooks like useEffectEvent, the <Activity /> API, and better SSR primitives such as Partial Pre-rendering. And more

In this talk we’ll take a demo React app that’s full of effects, memoization and “old school” patterns, and modernize it step by step

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React Berlin is a local meetup and community about all things related to the Ecosystem behind React(.js) and React Native. Based in Berlin, but open to international speakers and attendees.

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