ranbot-ai/ddd-tactical-patterns
skills/ddd-tactical-patterns/SKILL.md
Apply DDD tactical patterns in code using entities, value objects, aggregates, repositories, and domain events with explicit invariants.
$ install --global
skillsauthnpx skillsauth add ranbot-ai/awesome-skills ddd-tactical-patternsInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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SKILL.md
- name:
- ddd-tactical-patterns
- description:
- Apply DDD tactical patterns in code using entities, value objects, aggregates, repositories, and domain events with explicit invariants.
- category:
- Document Processing
- source:
- antigravity
- tags:
- [typescript, api, ai, design, document, rag]
- url:
- https://github.com/sickn33/antigravity-awesome-skills/tree/main/skills/ddd-tactical-patterns
DDD Tactical Patterns
Use this skill when
- Translating domain rules into code structures.
- Designing aggregate boundaries and invariants.
- Refactoring an anemic model into behavior-rich domain objects.
- Defining repository contracts and domain event boundaries.
Do not use this skill when
- You are still defining strategic boundaries.
- The task is only API documentation or UI layout.
- Full DDD complexity is not justified.
Instructions
- Identify invariants first and design aggregates around them.
- Model immutable value objects for validated concepts.
- Keep domain behavior in domain objects, not controllers.
- Emit domain events for meaningful state transitions.
- Keep repositories at aggregate root boundaries.
If detailed checklists are needed, open references/tactical-checklist.md.
Example
class Order {
private status: "draft" | "submitted" = "draft";
submit(itemsCount: number): void {
if (itemsCount === 0) throw new Error("Order cannot be submitted empty");
if (this.status !== "draft") throw new Error("Order already submitted");
this.status = "submitted";
}
}
Limitations
- This skill does not define deployment architecture.
- It does not choose databases or transport protocols.
- It should be paired with testing patterns for invariant coverage.
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