This is the most important update to Reanimated since worklets. Really proud of the team 🐎 - ThreadSky

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kzzzf.bsky.social • 34 days ago

This is the most important update to Reanimated since worklets. Really proud of the team 🐎

Announcing React Native Reanimated 4 🐴

Long-awaited CSS Animations and Transitions support is here! ✨

Available now in Beta.

Read more 👇

Comments

shirakaba.bsky.social•33 days ago

Very nice. Do you think we’ll ever see CSS Transitions in core? Would it make sense to upstream this, or do you think Meta might work on an in-house solution?

Did you have to make any compromises to implement this in userland?

kzzzf.bsky.social•33 days ago

Those are all great questions. We have a good contact with people at meta and been discussing this as well. There are definitely different tradeoffs so difficult to say at this point if this will land upstream in the near future.

kzzzf.bsky.social•33 days ago

As for the compromises, there isn't anything significant that comes to mind. The biggest challenge was to figure out how to handle prop updates that aren't triggered by react re-renders, but we actually come up with the right technique in Reanimated 3 already when integrating with Fabric.

kzzzf.bsky.social•33 days ago

It required small changes to Fabric but thanks to the help from Meta we got that sorted a long time ago. Other than that Fabric is really well designed and we would have to make a ton of compromises if it wasn't in place and we had to work with the old architecture (that's why Rea4 is Fabric only)

wa2goose.bsky.social•34 days ago

Amazing 👏👏👏👏

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