[Flutter] How to pass Exception in sync riverpod provider?

I have a provider which throws an exception which I want to handle where I read the provider:

@Riverpod(dependencies: [firebaseAuth])
User currentUser(CurrentUserRef ref) {
final user = ref.watch(firebaseAuthProvider).currentUser;
if (user == null) {
throw UserNotSignedInException();
}
return user;
}


and I want to catch it here:

try {
ref.read(currentUserProvider);
resolver.next();
} on UserNotSignedInException {
logger('User is not logged in, pushing intro route');
router.push(const IntroRoute());
}


But the Exception is thrown inside the provider and never reaches the catch block. Does somebody know how to pass the exception so I can handle it in the try catch? I know when using AsyncValue that I get an AsyncError to handle but I don't want an async provider.

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