NestJS Tutorial: What It is, Framework, Architecture

NestJS has its own DI container that’s easy to use, but it also supports factory injections so that users can easily switch between both styles if needed. If you combine it with a frontend framework like React or Vue, you can quickly create effective eCommerce websites. Aside from this, if any of the following points are of great importance to you and match your use case scenario, you should find using Nest highly beneficial.

What is Nest.js

Nest.js takes this idea a step further by introducing a hierarchical component system that allows for components to be nested within other components. This creates a very natural and easy way to construct your application in a way that feels intuitive and familiar to developers from all backgrounds. It is significantly influenced by Angular and one important feature is the power of dependency injection, which allows injecting one module into another, promoting code reuse.

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Since its initial release in 2017, Nest.JS has gained significant popularity within the JavaScript and TypeScript communities owing to its excellent performance. The framework has seen substantial growth in adoption and has also managed to build a strong and active community of developers. If you want your code to be clean, then modules are a great way of code isolation. If something doesn’t come from within one specific module, it can’t really be accessed in other parts of the application.

What is Nest.js

Simply put, a module in Nest.js is a TypeScript file decorated by @Module(). This decorator provides valuable metadata to the Nest.js framework to know exactly what controllers, service providers, and other related resources will be instantiated and used later by the app code. A reasonable knowledge of Javascript is essential for developers willing to design top-notch applications using Nest.js. 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.

Nest.js Step-by-Step

If it is not installed, make use of the Node Package Manager (NPM) and follow up the approach using the commands given below. Capgemini this French multinational corporation providing consulting, technology, professional, and outsourcing services is also using NestJS for their application architecture. NestJS is easily extendible, as it can be used with other libraries; versatile thanks to its adaptive fully-fledged ecosystem and progressive, bringing JavaScript features and design patterns.

  • In Figure 3, you verify that the new To Do item is now saved in the data by issuing a Get /api/todos request.
  • Both Nest JS and Node JS have proven successful for businesses of all sizes, from small startups to large enterprises.
  • NestJS uses modern solutions and technologies, so the applications created with it are maintainable and long-lasting.
  • NestJS is quite a popular and cumulative JavaScript framework functioning under the hood of Node.js and is used to construct scalable, reliable, and efficient server-side applications.
  • 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.

NestJS is great for specific scenarios and situations but not quite at the level of some of the older, more powerful programming languages or even its modern counterparts that actively compete against it. As a development platform for multiple devs in various teams, NestJS provides standard guidelines for each member to prevent chaos and ensure high code quality. This defined, standardised architecture results in an easily maintainable codebase. Ann is a product specialist who helps engineers easily get started using feature flags. She resides in Toronto where you can find her at the AGO, or at home whipping up a delicious meal.

What is Nest.js?

As a result, providers that are neither directly a part of the current module nor directly exported from the imported modules cannot be injected. Both Nest JS and Node JS have large and active developer communities, with a wide range of resources and support available for developers. On the other hand, Nest JS has become an invaluable asset for businesses in areas such as finance and healthcare due to its highly modular architecture and emphasis on dependability through testing.

What is Nest.js

It encourages developers to try, learn and use some well-known software development paradigms and its documentation has lots of examples, recipes and code sources. Let us guide you through the list of some of the most prominent features of the platform. Nodejs is a Javascript framework that runs outside the browser, i.e to build server-side applications.

Why Choose Nest.js

Nest JS is a great choice for you to quickly create and deploy reliable back-end web applications. Its powerful abstractions and libraries make it easier to jump in with minimal setup, while also benefiting from a scalable architecture. However, it may have a steeper learning curve if you are unfamiliar with TypeScript and the modular design it uses.

Our comprehensive guide is designed to help you attain maximum proficiency with this framework. Keep reading to discover more about Nest.JS and its relative advantages and disadvantages when compared to other backend frameworks. Nest.js uses TypeScript for type checking and provides an out-of-the-box software architecture for building and deploying testable, scalable, loosely coupled, and easily maintainable applications.

Three Main Components

Here, we’ll enumerate the pros and cons of Nest.js for a better understanding of why it’s such a popular framework in the Node.js ecosystem. You can find a list of additional companies, projects, and tools built with Nest.js on GitHub. In addition, Nest.js maintains detailed documentation, and its community of developers and contributors is very active and ready to respond to issues on the fly. 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.

What is Nest.js

When it comes to developing server-side applications, Nest JS and Node JS are both popular selections. Still, the best choice for your project will depend on its specific requirements. If you need a scalable and maintainable solution for crafting enterprise-level applications, then Nest JS may be perfect for you. Conversely, if you are seeking to build high-performance applications with a focus on lightweightness, then NodeJS should be a top consideration. A computer software or other technology used to support or facilitate banking and financial services is referred to as fintech. More and more financial institutions are creating fintech applications, and Express is the framework of choice for creating highly scalable finance applications.

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