Problem With Animations

If animation run on JS Thread then for each frame the JS Thread will send serialized data on Bridge to the UI Thread. This will result in something similar with real life traffic jam where we have the bridge and the cars(code for each frame).

In addition of this imagine also doing a network request and a dispatch for global state, the JS Thread would be more busy resulting in even more lag.

A very good solution for running animations on UI Thread is react-native-reanimated which also give the opportunity to run any piece of JS code, not only animations.