React-native shadow not appearing

Is the shadow working on IOs ?
Android and IOS work ≠ in React-Native. For android, it works with elevation.

const styles = StyleSheet.create({
shadow: {
  shadowOffset: { width: 10, height: 10 },
  shadowColor: 'black',
  shadowOpacity: 1,
  elevation: 3,
  // background color must be set
  backgroundColor : "#0000" // invisible color
}

Otherwise, try to set a background color to your shadow component 🙂