```jsx expoSnack
import React from 'react';
import { Button } from 'react-native';
import { Authenticator, useAuthenticator } from '@aws-amplify/ui-react-native';
import { Amplify } from 'aws-amplify';
import awsconfig from './aws-exports';
Amplify.configure(awsconfig);
function SignOutButton() {
const { signOut } = useAuthenticator();
return ;
}
function App() {
return (
);
}
export default App;
```