App.js

import React from 'react';
import { NavigationContainer } from '@react-navigation/native';
import { createStackNavigator } from '@react-navigation/stack';
import Start from './components/Start';
import Chat from './components/Chat';

const Stack = createStackNavigator();

const App = () => {
  return (
    <NavigationContainer>
      <Stack.Navigator initialRouteName='Start'>
        <Stack.Screen name='Chat App' component={Start} />
        <Stack.Screen
          name='Chat'
          component={Chat}
          options={({ route }) => ({ title: route.params.name })}
        />
      </Stack.Navigator>
    </NavigationContainer>
  );
};

export default App;