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NestJS is a progressive Node.js framework that combines object-oriented, functional, and reactive programming paradigms to build scalable server-side applications. Built on top of Express or Fastify, it provides a structured architecture using modules, controllers, and providers with built-in dependency injection. The framework offers TypeScript-first development, decorators for routing and validation, middleware support, guards for authorization, exception filters for error handling, and interceptors for response transformation. It includes comprehensive database integration options with TypeORM, Mongoose, and Prisma, along with built-in testing capabilities and CLI tools for code generation.

The NestJS Handbook – Learn to Use Nest with Code Examples

NestJS is a server-side JavaScript framework built on top of Node.js and Express.js for building scalable and modular web applications. It provides features such as dependency injection, middleware support, and GraphQL integration for building APIs and microservices. Readers can learn how NestJS facilitates the development of enterprise-grade applications with features such as modular architecture, TypeScript support, and built-in testing utilities, enabling developers to build robust and maintainable applications.

Best of NestJS — June 2025