express-nestjs

To structure a secure NestJS API, use controllers for routing, services for business logic, and repositories for data access. Cross-cutting concerns like request validation and authorization are handled by guards, interceptors, and pipes.

Choosing between Express.js and NestJS depends on your architecture goals and app type. NestJS provides an opinionated structure with built-in modules, while Express offers lightweight flexibility, and this skill helps auto-detect framework cues to guide the tradeoff.

Implement centralized error handling and request validation in Express.js by configuring middleware. This ensures predictable API responses and catches malformed inputs before they reach your core business logic.

Yes, the API security workflow includes setting up OpenAPI Swagger documentation. It standardizes API responses and generates documentation alongside implementing authentication, role checks, and testing strategies.

Add authentication and role checks to NestJS endpoints by implementing guards. These components evaluate request metadata and enforce authorization policies before the controller layer processes the response.