step-one_NativeVisionApp.tsx

import React, {FC} from 'react';
import {Button, NativeModules, SafeAreaView} from 'react-native';
const {VisionModule} = NativeModules;

const App: FC = () => {
  return (
    <SafeAreaView>
      <Button title="Say Hello" onPress={() => VisionModule?.sayHello()} />
    </SafeAreaView>
  );
};

export default App;