A Quick look at Nest.js

NestJS is a framework for building efficient and scalable Node.js server-side applications built with and fully supported by TypeScript. It uses robust HTTP Server frameworks like Express or Fastify. Nest provides a level of abstraction above common Node.js frameworks and exposes its APIs to the developer. This gives a great amount of freedom to use third-party modules.

NestJS is an open-source, extensible, versatile, progressive Node.js framework for creating compelling and demanding backend systems. It is currently the fastest-growing Node.js framework in TypeScript.

Building blocks of NestJS

Modules: used to organize the code and split features into logical reusable units. Grouped TypeScript files are decorated with “@Module” decorator which provides metadata that Nest makes use of to organize the application structure.

Providers: also called services, which are designed to abstract any form of complexity and logic. Providers can be created and injected into controllers or other providers.

Controllers: responsible for handling incoming requests and returning appropriate responses to the client-side of the application (for example call to the API).

Why you should choose NestJS?

  •  A quick and efficient development process. 
  • Highly scalable and easy to maintain applications. 
  • Fastest growing Node.js framework for the past 3 years. 
  • Large community and support system. 
  • Nest has positioned itself at a unique crossroad of front end and mid-tier development that many languages have struggled to find. 
  • The use of TypeScript helps ensure that Nest will remain relevant in the rapidly changing JavaScript landscape and gives developers less context switching. 
  • Great documentation. 
  • Easy unit testing. 
  • Built for large-scale enterprise applications. 
  • Nest provides an out of the box application architecture that allows developers and teams to create highly testable, scalable, loosely coupled and easily maintainable applications. 
  • With NestJS you can build Rest API’s, MVC applications, microservices, GraphQL applications, Web Sockets or CLI’s and CRON jobs. It uses the best of Node.js, TypeScript, and bullet-proof architectural patterns. The structure of the application in Nest is heavily based on Angular.
  •  The structure is very simple and allows more attention to be paid to the design of endpoints and their consumers, instead of the application structure. 
  • NestJS forces developers to use a specific architecture by introducing Angular-like modules, services, and controllers, ensuring the application is scalable, highly testable, and loosely coupled contrary to other Node.js frameworks like Express or Koa where a mistake early on in the project regarding the architecture may cost a lot in terms of time spent refactoring the codebase later.