app.js

import ...

class App extends Component {
  state = {
    profiles: ['foo', 'bar', 'biz']
  }
  
   render() { return (
      <AppContainer />
   )}
}

const MainNavigator = createStackNavigator({
   Home: {
      screen: Home,
      navigationOptions: {
         header: null
      }
   },
   Create: {
      screen: Create,
      navigationOptions: {
         header: null
      }
   },
   Profile: {
      screen: Profile,
      navigationOptions: {
         header: null
      }
   }
});

const AppContainer = createAppContainer(MainNavigator);
export default App;