text: 
  import React from 'react';
  import { createStackNavigator } from '@react-navigation/stack';
  import { NavigationContainer } from '@react-navigation/native';
  import Login from '../Screens/Login';
  import 	Signup from '../Screens/Signup';
  
  const Stack = createStackNavigator();
  
  export default function Routes(){
  
  	return(
  		   <NavigationContainer> 
            <Stack.Navigator 
              initialRouteName="firstScreen"
              screenOptions= {{ gestureEnabled: false}}
              >
              <Stack.Screen
               name="firstScreen"
               component={Login}
              />
              <Stack.Screen
              name="registerUser"
              component={Signup}
               initialParams={{ user: 'me' }}
              />
            </Stack.Navigator>
  
        </NavigationContainer> 
  
  
  		);
  
  }
  
  
  