text: import { createStackNavigator } from 'react-navigation';
  import { styles } from '~/modules/navigation';
  import { LoadingScreen } from './screens';
  export const routes = { LOADING: 'LOADING' };
  
  export default createStackNavigator(
    {
      [routes.LOADING]: {
        name: routes.LOADING,
        screen: LoadingScreen,
        navigationOptions: {
          headerStyle: styles.header,
          title: 'M2M Mobile',
          headerTitleStyle: styles.headerTitle,
        },
      },
    },
    { initialRouteName: routes.LOADING },
  );
  