Exploring NestJS: A Comprehensive Guide to its Key Features

NestJS has emerged as a robust Node.js framework, leveraging the power of TypeScript to build scalable and maintainable server-side applications. With its modular architecture and extensive feature set, NestJS empowers developers to create enterprise-grade applications effortlessly. In this article, we will delve deep into NestJS and explore its key features, including controllers, providers, pipes, guards, interceptors, middleware, exception filters, and modules, to gain a comprehensive understanding of their capabilities.

Controllers

Controllers in NestJS act as the primary entry points for handling incoming HTTP requests. They are responsible for routing requests to the appropriate endpoint and executing the corresponding business logic. We will explore the role of controllers, their structure, and how they interact with the underlying services. Additionally, we’ll discuss routing, parameter binding, and request/response handling within controllers. You’ll learn how to define routes, handle different HTTP methods, and handle various types of parameters like query parameters, route parameters, and request bodies.

Providers

Providers in NestJS encapsulate the business logic of the application. They can be injected into controllers or other providers…