Ask for review - Login process without the build-in button component LoginButton

[FrancescoBonizzi]

Hi! Due to UI requirements, I don't use the provided LoginButton but I designed a custom button and implemented the behavior. I noticed that sometimes in some Android devices the login popup For your account security, logging into Facebook from an embedded browser is disabled.

I'm just asking here a review of this custom button component, do you notice something wrong?

I'm with Expo, the config plugin section:

    "react-native-fbsdk-next",
    {
      "appID": "secret",
      "clientToken": "secret",
      "displayName": "secret",
      "scheme": "secret",
      "advertiserIDCollectionEnabled": false,
      "autoLogAppEventsEnabled": false,
      "isAutoInitEnabled": true,
      "iosUserTrackingPermission": "Something"
    }

export type FacebookSigninResult = AccessToken; // Just for my own understanding

const FacebookLoginButton = (props: LoginProviderButtonProps) => {

    const facebookSdkSignin = async () => {

        const loginResult = await LoginManager.logInWithPermissions(
            ['public_profile', 'email']);

        if (loginResult.isCancelled) {
            Alert.alert('Facebook: login canceled');
            return null;
        }

        const token = await AccessToken.getCurrentAccessToken();
        if (!token) {
            throw new Error('Facebook login: failed');
        }

        return token;
    }

    const completeRegistrationOrLoginOnOurBackend = async (signinResult: FacebookSigninResult) => {
        // Do a lot of nice things
    }

    const buttonHandler = async () => {

        try {
            const userInfo = await facebookSdkSignin();
            if (!userInfo) {
                return;
            }

            await completeRegistrationOrLoginOnOurBackend(userInfo);
        }
        catch (ex) {
            ExceptionsHandler.logError(ex);
        }

    };

    return (
        <TouchableOpacity onPress={buttonHandler}>
            <Text>Login with Faceboook</Text>
        </TouchableOpacity>
    );
};

export default FacebookLoginButton;