text: import React from 'react';
  import { createDrawerNavigator } from '@react-navigation/drawer';
  
  import SimpleText from './components/SimpleText';
  import PairOdd from './components/PairOdd';
  
  export default createDrawerNavigator({
    SimpleText: {
      screen: () => {<SimpleText text="Hello World!"/>},
      navigationOptions: {
        title: 'Texto Simples'
      }
    },
    PairOdd: {
      screen: () => {<PairOdd number={10}/>},
      navigationOptions: {
        title: 'Par OU Ímpar'
      }
    }
  });