react-native-material-ui/src/utils/index.js

React Native Material Design Components

import {
  View,
  BackHandler,
  ViewPropTypes as RNViewPropTypes,
  BackAndroid as DeprecatedBackAndroid,
} from 'react-native';

const ViewPropTypes = RNViewPropTypes || View.propTypes; // eslint-disable-line
const BackAndroid = BackHandler || DeprecatedBackAndroid;

export { ViewPropTypes, BackAndroid };