Very long build times after updating to reanimated 4.x and new architecture

[Jakub-Plan-d-k]

After switching to RN0.81, new architecture, reanimated 4.x and worklets I have experienced build times 4 times longer than previously.
Before, building the whole app for release took around 14 minutes, now it takes around 55 minutes.

To figure out what was the reason behind it, I have executed ./gradlew build --scan.
As it turns out, reanimated takes the absolute longest to build, much longer than any other libraries. In the 1h 50 minutes long full build, react-native-reanimated related tasks took 49 minutes. Is this an expected behavior?

[piaskowyk]

Hey! It looks like you're building your project for 4 architectures instead of just one.

You should explicitly set your target architecture, and it should solve your problem. It should be detected automatically by Android Studio, but if it doesn't work, you can explicitly set it via gradle.properties. For example:

reactNativeArchitectures=arm64-v8a

[Jakub-Plan-d-k]

I know that, however my problem is not my daily work, but bundling for release, where I have to build for all architectures.

[Jakub-Plan-d-k]

Another thing I have noticed after updating to new arch is that the library size in apk file is 5x bigger. Including the worklets it is 3x. On the left is my apk in old arch and right is the new.

Is it all expected behavior? Why did it change so much compared to other libraries?