Where Reanimated Goes Next

Reanimated aims to pair a CSS-style API, familiar to web developers, with Worklets for running arbitrary JavaScript on the UI runtime. The team is also developing deeper native integration, including using iOS Core Animation and its Render Server to run animation work on a separate thread.

Błoniarz says migrating ecosystem libraries to React Native’s new architecture has been a major pain point, though that work is nearly complete. Callstack is working with Meta on a shared compatibility layer so Reanimated can be tested against changes in React Native core and become more stable.

Błoniarz describes Reanimated as a step up when projects need animation beyond React Native’s built-in Animated library. Shared element transitions are challenging because React keeps views within their rendered parent, while a transition moves an element between destinations. Unlike web View Transitions, which use snapshots, Reanimated aims to move the native view instance or create a copy that preserves state, which matters for keeping video playback continuous.

Błoniarz says he has used Claude and Cursor, and likes fast models for synchronous prototyping and quick iteration. He also uses them to diagnose linker and build configuration errors. Multiple agents can help with independent tasks, but animation work often requires manual checks, making parallel agent workflows harder to manage.