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ddd-aggregate

Scaffold an aggregate root with entity, value objects, repository interface, domain events, and test stubs

Stars
56,726
Source
ruvnet/claude-flow
Updated
2026-05-31
Slug
ruvnet--claude-flow--ddd-aggregate
View on GitHubRaw SKILL.md

// install — copy + paste into any project

mkdir -p .claude/skills && curl -fsSL https://raw.githubusercontent.com/ruvnet/claude-flow/HEAD/plugins/ruflo-ddd/skills/ddd-aggregate/SKILL.md -o .claude/skills/ddd-aggregate.md

Drops the SKILL.md into .claude/skills/ddd-aggregate.md. Works with Claude Code, Cursor, and any agent that loads SKILL.md files from .claude/skills/.

Scaffold a complete aggregate root inside a bounded context.

Parse $ARGUMENTS as <context-name> <aggregate-name> (both kebab-case). The context must already exist under src/.

Steps

  1. Validate: Confirm src/<context>/domain/ exists. If not, suggest running /ddd-context <context> first.

  2. Pre-task hook: npx @claude-flow/cli@latest hooks pre-task --description "DDD aggregate: <aggregate-name> in <context>"

  3. Create aggregate root entity:

    • File: src/<context>/domain/entities/<aggregate-name>.entity.ts
    • Include: unique ID field, constructor with invariant validation, domain methods that enforce business rules, equals() based on identity
    • Export a TypeScript class extending or implementing a base AggregateRoot interface

  4. Create value objects:

    • File: src/<context>/domain/value-objects/<aggregate-name>-id.value-object.ts
    • Include: immutable ID value object with factory method and validation
    • Add additional value objects as properties of the aggregate suggest them

  5. Create repository interface:

    • File: src/<context>/domain/repositories/<aggregate-name>.repository.ts
    • Include: findById, save, delete methods
    • Use the aggregate root and its ID value object as types
    • This is an interface only -- no implementation (infrastructure concern)

  6. Create domain events:

    • File: src/<context>/domain/events/<aggregate-name>-created.event.ts
    • File: src/<context>/domain/events/<aggregate-name>-updated.event.ts
    • Include: event name (past tense), timestamp, aggregate ID, payload

  7. Create unit test stubs:

    • File: src/<context>/domain/entities/<aggregate-name>.entity.test.ts
    • Include: test cases for construction invariants, domain methods, equality
    • Use describe/it with should [behavior] when [condition] names

  8. Update barrel exports: Add new files to the relevant index.ts barrel files.

  9. Store in domain model graph:

    mcp__claude-flow__agentdb_hierarchical-store --parent "context:<context>" --child "aggregate:<aggregate-name>" --relation "contains"
mcp__claude-flow__memory_store --key "ddd-aggregate-<context>-<aggregate-name>" --value "AGGREGATE_SUMMARY" --namespace tasks

  10. Post-task hook: npx @claude-flow/cli@latest hooks post-task --task-id "ddd-aggregate-<aggregate-name>" --success true --train-neural true