backend-dev-guidelines

Use layered architecture with routes, controllers, services, and repositories. This Skill provides standardized patterns for Node.js/Express/TypeScript microservices, including BaseController templates, dependency injection setup, and folder structure that separates concerns across API endpoints, business logic, and data access layers.

Implement centralized error handling with Sentry integration and validate requests using Zod. This Skill covers async error handling patterns, unified validation schemas, and error tracking configuration that work across all endpoints and middleware in your microservice.

Apply dependency injection to decouple repositories from services, and structure data access through a repository layer. This Skill standardizes how Prisma queries, service business logic, and controller request handling connect, reducing coupling and improving testability.

Yes. This Skill includes Prisma data access patterns integrated into the repository layer within the layered architecture, supporting real-world microservice scenarios with consistent query and error handling across all database operations.

Configure DI containers to inject repositories, services, and external dependencies into controllers and middleware. This Skill provides dependency injection patterns that enable testing, reduce tight coupling, and standardize how components are wired across your Node.js/Express backend.

Use dependency injection and layered separation to isolate services and repositories for unit testing. This Skill covers async testing patterns and architectural practices that make controllers, services, and data layers independently testable within Node.js/Express/TypeScript projects.