// Import the package
import 'package:excalibur/excalibur.dart';

// 1. Define your custom exceptions by extending the `BladeException` class
class CustomException implements BladeException {
    // The error code associated with the exception
    @override
    int get code => 1;
    
    // The message that will be displayed to the user
    @override
    String get message => 'Custom Exception Message';
    
    // Whether the error page replaces the current page or not
    @override
    bool get replace => false;
}

void main() {
    final _exceptions = [
        // 2. Register your custom exceptions
        CustomException(),
    ];
    // Initialize an instance of Excalibur
    final excalibur = Excalibur(
                        context,
                        exceptions: _exceptions,
                        unknownException: UnknownNumberException(),
                        builder: (exception) => ErrorPage(exception: exception),
                      );
    // Inject the instance of Excalibur into your app or call it directly
    excalibur.handleException(e as BladeException); // e is the exception

    // 3. Throw your custom exceptions
    throw CustomException();
    // or
    excalibur.throwException(1);
}