import React, {Component} from 'react'    
import Registrar from './pantallas/Registrar'; //register screen
import Principal from './pantallas/Principal'; // main screen after login    
import { NavigationContainer } from '@react-navigation/native';
import { createNativeStackNavigator } from "@react-navigation/native-stack";

export default function App()  {
  
  const Stack = createNativeStackNavigator(); 
  
  return(
    
  <NavigationContainer >
      
      <Stack.Group
        initialRouteName="Registrar"
        screenOptions={{ headerShown : false }}>            
        <Stack.Screen name="Registrar" component={Registrar} />            
        <Stack.Screen name="Principal" component={Principal} />          
      </Stack.Group>
    
    </NavigationContainer>
  )   
};