JSPM

// App.js

import React from 'react';
import { View } from 'react-native';
import { AppleButton } from '@invertase/react-native-apple-authentication';

async function onAppleButtonPress() {

}

function App() {
  return (
    <View>
      <AppleButton
        buttonStyle={AppleButton.Style.WHITE}
        buttonType={AppleButton.Type.SIGN_IN}
        style={{
          width: 160,
          height: 45,
        }}
        onPress={() => onAppleButtonPress()}
      />
    </View>
  );
}

// App.js

import appleAuth, {
  AppleButton,
  AppleAuthRequestOperation,
  AppleAuthRequestScope,
  AppleAuthCredentialState,
} from '@invertase/react-native-apple-authentication';

async function onAppleButtonPress() {
  // performs login request
  const appleAuthRequestResponse = await appleAuth.performRequest({
    requestedOperation: AppleAuthRequestOperation.LOGIN,
    requestedScopes: [AppleAuthRequestScope.EMAIL, AppleAuthRequestScope.FULL_NAME],
  });

  // get current authentication state for user
  const credentialState = await appleAuth.getCredentialStateForUser(appleAuthRequestResponse.user);

  // use credentialState response to ensure the user is authenticated
  if (credentialState === AppleAuthCredentialState.AUTHORIZED) {
    // user is authenticated
  }
}

// App.js

import React, { useEffect } from 'react';
import { View } from 'react-native';
import appleAuth, { AppleButton } from '@invertase/react-native-apple-authentication';

function App() {
  useEffect(() => {
    // onCredentialRevoked returns a function that will remove the event listener. useEffect will call this function when the component unmounts
    return appleAuth.onCredentialRevoked(async () => {
      console.warn('If this function executes, User Credentials have been Revoked');
    });
  }, []); // passing in an empty array as the second argument ensures this is only ran once when component mounts initially.

  return (
    <View>
      <AppleButton onPress={() => onAppleButtonPress()} />
    </View>
  );
}

// App.js

import { View, Button } from 'react-native';
import appleAuth, {
  AppleAuthRequestOperation,
  AppleAuthCredentialState,
} from '@invertase/react-native-apple-authentication';

async function onLogout() {
  // performs logout request
  const appleAuthRequestResponse = await appleAuth.performRequest({
    requestedOperation: AppleAuthRequestOperation.LOGOUT,
  });

  // get current authentication state for user
  const credentialState = await appleAuth.getCredentialStateForUser(appleAuthRequestResponse.user);

  // use credentialState response to ensure the user credential's have been revoked
  if (credentialState === AppleAuthCredentialState.REVOKED) {
    // user is unauthenticated
  }
}

function App() {
  return (
    <View>
      <Button onPress={() => onLogout()}>log out</Button>
    </View>
  );
}