text: import { StackNavigator } from 'react-navigation';
  import LaunchScreen from '../Containers/LaunchScreen';
  import Login from '../Containers/Login';
  import EmailLogin from '../Containers/EmailLogin';
  import DashboardComponent from '../Containers/Dashboard';
  import Signup from '../Containers/Signup';
  import styles from './Styles/NavigationStyles';
  
  // Manifest of possible screens
  const PrimaryNav = StackNavigator({
    LaunchScreen: { screen: LaunchScreen },
    MainLoginScreen: { screen: Login },
    EmailLoginScreen: { screen: EmailLogin },
    DashboardScreen: { screen: DashboardComponent },
    SignupScreen: { screen: Signup }
  }, {
    // Default config for all screens
    headerMode: 'none',
    initialRouteName: 'DashboardScreen',
    navigationOptions: {
      headerStyle: styles.header
    }
  })
  
  export default PrimaryNav
  