Massive/index.js

import 'react-native-gesture-handler';
import 'react-native-sqlite-storage';
import React from 'react';
import {AppRegistry} from 'react-native';
import App from './App';
import {name as appName} from './app.json';
import {Provider as PaperProvider, DarkTheme} from 'react-native-paper';
import Ionicon from 'react-native-vector-icons/Ionicons';

export default function Main() {
  return (
    <PaperProvider
      theme={DarkTheme}
      settings={{icon: props => <Ionicon {...props} />}}>
      <App />
    </PaperProvider>
  );
}

AppRegistry.registerComponent(appName, () => Main);