refactor-to-pattern

Refactoring a NestJS project to clean architecture involves moving orchestration out of controllers into dedicated use cases, applying domain boundaries, and moving validation to domain factories to enforce invariants.

Migrating controller logic to use cases requires extracting orchestration from controllers and placing it in dedicated use cases, ensuring domain methods return Result<T> objects and encapsulating domain logic properly.

Fixing anemic domain models and primitive obsession involves refactoring to rich domain models by introducing value objects, domain boundaries, and enforcing invariants within domain factories and entities.

This refactoring approach targets NestJS projects specifically, applying clean architecture and DDD patterns like domain encapsulation, use-case orchestration, and domain-centric validation to fix anti-patterns.

Domain validation moves to domain factories to enforce invariants within the domain layer, replacing scattered validation logic and ensuring that domain entities remain consistent and valid upon creation.

Domain-driven design refactoring patterns may not suit simple CRUD applications or small-scale projects where the overhead of use cases, value objects, and domain boundaries outweighs maintainability benefits.