NestJS vs Loopback 4: what are the differences?

NestJS VS Loopback 4

Many developers are asking online whether their colleagues recommend NestJS or Loopback 4. Instead of picking one on your behalf, in this article, we’d like to provide a brief description of both along with a discussion of their major differences. This way, we believe, anyone should be able to pick between NestJS and Loopback 4 according to their needs and preferences.

What is NestJS?

NestJS is a Javascript framework that functions under the hood of Node.js. It’s a very popular platform and is used to build reliable and efficient server-side applications. The framework supports TypeScript and it enables developers to code in Javascript while combining concepts like OOP (Object-oriented programming), FRP (Functional Reactive Programming), and FP (Functional Programming).

NestJS is an open-source tool; developers can support the team behind its development, but they can use it completely for free.

What is Loopback 4?

Loopback 4 is also a Node-js and TypeScript framework, and just like NestJS is based on Express.

Some developers experience some issues (bugs) with Loopback 3, but they all seem resolved with the Loopback 4 update.

Developers are using Loopback 4 mainly to create APIs and microservice. As you may know, APIs function as a sort of intermediary between backend systems (SOAP, REST services, databases…) and the API endpoints. Loopback 4 allows API developers to work on these “bridges” quickly and efficiently. Loopback 4 is also an open-source interface that developers can install and use for free.

What is the difference between NestJS and Loopback 4?

The main difference between NestJS and Loopback 4 is in the use that developers can make of the two platforms. As we’ve already mentioned, Loopback 4 is used to create dynamic end-to-end REST APIs, and the reason why many developers have chosen it is that it allows you to do so with just a little or no coding at all. It also allows you to build on top of your existing services and data, connect to multiple data sources, write business logic in Node.js, and more.

NestJS, as we’ve also mentioned, isn’t designed to work on APIs, but on server-side applications. SO, while Loopback 4 could be classified as a Microframework back-end interface, NestJS would be grouped in the framework (full stack) category.

NestJS vs Loopback 4: which one should you use?

In this article, we’ve learned that there is no best between NestJS and Loopback 4. The choice between the two depends on what you need to do and work on. If your work is strictly focused on APIs and you need to build bridge infrastructures between services, then Loopback 4 is the interface that can let you work more efficiently.

If you are working on applications, and also if you are a student working on their first application, then NestJS would be the preferable choice.