abstract class Failure {
  final String message;
  final StackTrace? stackTrace;

  const Failure(this.message, [this.stackTrace]);

  @override
  String toString() => message;
}

class NetworkFailure extends Failure {
  const NetworkFailure(super.message, [super.stackTrace]);
}

class StorageFailure extends Failure {
  const StorageFailure(super.message, [super.stackTrace]);
}

class AuthFailure extends Failure {
  const AuthFailure(super.message, [super.stackTrace]);
}

class ParseFailure extends Failure {
  const ParseFailure(super.message, [super.stackTrace]);
}