React Native Reanimated 4.0 comes with a support for an API similar to CSS Animations and Transitions. Currently available in Beta.

function App() {
  return (
    <Animated.View
      style={{
        transitionProperty: 'width',
        transitionDuration: 300,
      }}
    />
  );
}

Check out the Reanimated 4 documentation for more information.