App.js

import React, { useCallback, useEffect } from 'react';
import { StyleSheet } from 'react-native';
import { PaperProvider } from 'react-native-paper';

import { MainNavigation } from './src/navigation';
import { useFonts } from 'expo-font';
import * as SplashScreen from 'expo-splash-screen';
import { Provider } from 'react-redux';
import store from './src/store';
import { initSQLiteDB } from './src/persistence';

/* Database initialization */
(async () => {
  try {
    const response = await initSQLiteDB();
  } catch (error) {}
})();

export default function App() {
  const [fontsLoaded, fontError] = useFonts({
    'Poppins-Black': require('./assets/fonts/Poppins-Black.ttf'),
    'Poppins-SemiBold': require('./assets/fonts/Poppins-SemiBold.ttf'),
    'Poppins-ExtraBold': require('./assets/fonts/Poppins-ExtraBold.ttf'),
    'Poppins-ExtraLight': require('./assets/fonts/Poppins-ExtraLight.ttf'),
    'Poppins-Light': require('./assets/fonts/Poppins-Light.ttf'),
    'Poppins-Medium': require('./assets/fonts/Poppins-Medium.ttf'),
    'Poppins-Regular': require('./assets/fonts/Poppins-Regular.ttf'),
    'Poppins-Bold': require('./assets/fonts/Poppins-Bold.ttf'),
    'Poppins-Thin': require('./assets/fonts/Poppins-Thin.ttf'),
  });

  const onLayoutRootView = useCallback(async () => {
    if (fontsLoaded || fontError) {
      await SplashScreen.hideAsync();
    }
  }, [fontsLoaded, fontError]);

  if (!fontsLoaded || fontError) {
    return null;
  }

  if (fontsLoaded && !fontError) {
    return (
      <Provider store={store}>
        <PaperProvider>
          <MainNavigation />
        </PaperProvider>
      </Provider>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#fff',
    alignItems: 'center',
    justifyContent: 'center',
  },
});