AgentSkillsCN

create-entity

按照领域驱动设计的模式创建新的领域实体或聚合根。在对具备身份标识与生命周期的业务实体进行建模时，可选用此方法。

SKILL.md
--- frontmatter
name: create-entity
description: Create a new domain entity or aggregate root following DDD patterns. Use when modeling business entities with identity and lifecycle.
argument-hint: [module-name] [entity-name] [is-aggregate:yes|no]
disable-model-invocation: true

Create a new domain entity "$1" in the $0 module.

Create file: src/modules/$0/domain/$1.ts

Is this an aggregate root? $2 (default: yes)

Requirements:

If aggregate root (default):

  • •Extend AggregateRoot<Props> from '@shared/ddd/AggregateRoot'
  • •Include domain event publishing capability
  • •Control transaction boundaries

If regular entity:

  • •Extend Entity<Props> from '@shared/ddd/Entity'

Common requirements for both:

  • •Use private constructor with static create() factory method
  • •Include props interface for entity properties
  • •Use UniqueEntityID for identity
  • •Implement business logic methods (not just getters/setters)
  • •Use Guard pattern for validation in the create() method
  • •Return Result<EntityName> from create() method
  • •Pure business logic - NO framework dependencies

Follow DDD principles:

  • •Encapsulate business rules
  • •Protect invariants
  • •Use domain language
  • •Keep logic in the domain layer

Reference the Order aggregate as an example.