domain

Domain - Domain Layer Generator

Generate domain layer components from feature specifications. Creates the foundation that data and presentation layers build upon.

Philosophy

The domain layer is pure Dart with zero external dependencies:

• No Flutter
• No Freezed (that's for data layer DTOs)
• No JSON serialization
• Only language primitives

This ensures the domain is:

• Framework-agnostic
• Easily testable
• Stable (changes least frequently)

When to Use This Skill

• After /feature-init has created the folder structure
• When you need to fill in entities, enums, or repository interfaces
• When adding new domain concepts to an existing feature
• User asks to "create domain", "generate entities", or "create repository interface"

What This Skill Creates

lib/features/{feature}/domain/
├── entities/
│   ├── {entity}.dart           # Pure Dart class
│   └── {value_object}.dart     # Value objects (if needed)
├── enums/
│   └── {enum_name}.dart        # Enum definitions
└── repositories/
    └── {feature}_repository.dart  # Abstract interface

Workflow

Step 1: Locate the Spec

Look for:

lib/features/{feature}/.spec.md     # If feature exists
docs/features/{feature}.spec.md     # If feature is new

If no spec exists, ask user to run /plan {feature} first.

Step 2: Extract Domain Requirements

From the spec, identify:

• Entities - Section 2.1 (fields, types, required/optional)
• Enums - Section 2.2 (values and descriptions)
• Repository Interface - Section 2.3 (methods and signatures)
• Value Objects - Composite types like LatLng, Money
• Business Rules - Validation, computed properties

Step 3: Generate Code

Use reference files in reference/ directory as templates:

Component	Reference File
Simple entity	reference/entities/simple_entity.dart
Entity with computed	reference/entities/entity_with_computed.dart
Entity with equality	reference/entities/entity_with_equality.dart
Entity with copyWith	reference/entities/entity_with_copywith.dart
LatLng value object	reference/value_objects/lat_lng.dart
Money value object	reference/value_objects/money.dart
Simple enum	reference/enums/simple_enum.dart
Enum with properties	reference/enums/enum_with_properties.dart
Enum with methods	reference/enums/enum_with_methods.dart
Basic CRUD repository	reference/repositories/basic_crud_repository.dart
Paginated repository	reference/repositories/paginated_repository.dart
Offline repository	reference/repositories/offline_repository.dart