NestJS vs Express.js LogRocket Blog

Every website has a front end that the user interacts with and a back end that sends and retrieves data from the server. Developers who work on server-side frameworks build, design, and maintain the code, which makes data exchange possible. On the other hand, developers who work on front-end frameworks create feature-rich, visually appealing applications and websites. Nest.JS is a framework for building efficient and scalable server-side applications using JavaScript or TypeScript. It is built on top of the widely popular Node.js runtime and leverages its asynchronous, event-driven nature to provide a robust and reliable platform for developing web applications.

The reason our engineering team chose NestJS is because the NestJS framework checked their three key boxes, is highly customizable, has extensive documentation, and has a broad community of followers. There are 3 main components of NestJS; controllers, providers, https://wizardsdev.com/en/vacancy/middle-nestjs-developer/ and modules. Here, we’ll list different reasons to select Nest.js as your Node.js framework for upgrading or building your next project. Nest.JS is also highly configurable with ORMs like TypeORM, which developers can use to work with databases.

Incredible features of NestJS

You can import the same Shared module across multiple other modules and Nest guarantees the creation of a single instance of all the providers shared by the module. What’s important here is to configure the Shared module to export anything you want other modules to use. In this first installment, I’ll start by generating a new Nest.js app and building the REST API based on an in-memory data storage. Nest has modules and offers dependency injection right out of the box. NestJS was developed by Kamil Myśliwiec as a framework facilitating the development of scalable server-side applications.

• We only want to deploy the dockerized Nest.js app so select Containers as a Service.
• Another considerable feature of working on nest.js is that it is completely built with Typescript so which helps enhance the development of the web app by helping in code type checking.
• It also includes a robust dependency injection framework that simplifies managing application components and dependencies.
• Out-of-the-box tools and features make development, extension, and maintenance efficient.
• In this article, we’ll explore Nest.js and what you can build with it.

To get a list of all To Do items in the database, send an HTTP Request to GET /api/todo. For example, if you request the URL GET /todo, Nest routes this request to a designated Controller class, typically, the TodoController class. The Nest module system also comes with a feature called Dynamic modules. Listing 1 is an example of a Dynamic module taken from the Nest docs.

What is Nest.JS?

It can lead to disaster during maintenance and should be avoided at all costs. This disaster is caused by changes made to the codebase and new features as the project grows in the user base. If you are new to JavaScript or backend programming, the learning curve may be longer because you will need to comprehend the language principles as well as backend ideas.

This powerful CLI makes it a breeze to jump-start any server-side project and see it to completion. Nest.js is a perfect solution for your next project if you need to build a scalable, maintainable, enterprise-level application. In this article, we’ll explore Nest.js and what you can build with it.

Deploy a Nest.js Application to a Back4app Container

Additionally, we built a simple to-do RESTful to practically demonstrate the awesomeness of the framework. This schema will specify how the data will be represented in our database. Next, we’ll generate the files and import the Mongoose to communicate with the project and MongoDB. It’s time to practice all we’ve learned about Nest.js by building our first RESTful API to demonstrate the power and simplicity that comes with it.

When an HTTP request is received, the routing mechanism directs the request to the appropriate controller. The controller then handles the request and returns the appropriate response. These advantages are what trigger popular brands such as Adidas, Roche, and more to use the framework for their enterprise production applications. It provides the engineering team with standard development architecture and industry best practices. With it, developers can abstract away repeated engineering processes to focus solely on developing the business logic. Next, we’ll install and configure MongoDB to work with the project we created earlier.

What is Express.js?

In the above code snippet, the AppModule is imported as a method and @Module decorator is imported from @nestjs/ sharing common library. The @Module decorator when passed consists of three properties namely imports, controllers, and providers. In the above image, you can visualize all the files and dependencies some of which are core files.

Nest.js, on the other hand, was built to offer solutions to code structure and code organization strategy problems. It combines modern and modular approaches to software engineering principles. Nest.js is a popular and in-demand backend framework in the Node.js ecosystem. The good thing about them is that if ever your app grows with a ton of traffic, you can easily migrate your SSR app and use other programming languages such as Golang or Rust to serve the API.

Next, we’ll discuss why you and your company should choose Nest.js for your next project, and we’ll provide insight into why others already use the framework and its benefits. You can find a list of additional companies, projects, and tools built with Nest.js on GitHub. Nest.JS offers a lot of new functionality and layers in comparison to Express.JS.

This gives a great amount of freedom to use third-party modules. In Nest.js, a module allows you to group together related controllers and service providers into a single code file. Simply put, a module in Nest.js is a TypeScript file decorated by @Module().