️NestJS for Beginners Part 1: Overview and Project Setup to Running your first app by Michael M H

The team behind Clockify decided to use Nest.js for their backend services, and the results were outstanding. Nest.js allowed them to maintain a consistent, scalable, and easy-to-understand codebase, significantly enhancing their ability to deliver a high-quality application. The versatility of Nest.js means it can be successfully used in a variety of applications. Whether it’s developing complex enterprise systems, crafting efficient APIs, or building robust website builders, Nest.js software quality assurance (QA) analyst has proven to be an excellent tool for the job. In Nest.js, controllers are responsible for handling incoming HTTP requests and returning responses to the client.

Dependency Injection

Instead of hashing the entire module metadata, it now uses object references to generate opaque keys. This change is largely transparent to most users but significantly Middle/Senior Nest.js developer job boosts startup performance for applications with large dynamic modules. 🎈The files of src/ directory when starting a projectI’ll summarize based on the Overview section in the official documentation. Also, you can check the files created by nest new, including those in the src/ directory, in the following. If you’re looking to build high-quality web and server applications, Nest.js could be a good option for you.

Mastering Backend Development with Nest.js

You’ll be using this Logger to signal that the application has started on the 4000 port. Similar to Angular apps, Nest.js has a main.ts file that bootstraps your app, as you can see in Figure 1. You use the NestFactory.create() method to create a new app (~ Express.js app) that listens to incoming requests at port 3000 by default. In line with the concept of shared modules, Nest offers the @Global() decorator.

• Before we can start building with NestJS, we need to set up our project.
• It’s open-source and cross-platform, and it allows developers to use JavaScript to generate web content before the page is sent to the web browser.
• During the process, the CLI asks you a series of questions for additional information.
• NestJS uses dependency injection to manage and resolve dependencies, making the code more modular and testable.
• Nest.js is a server-side Node.js framework that’s great for building highly testable and maintainable backend applications.

Installing Nest.js

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. 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. Choosing a framework is dependent on the type of application you’re developing, as different applications require a different set of tools.

Controllers are responsible for handling requests, but they should delegate the business logic to services. Nest.js has proven its worth in the real world, with businesses of all sizes using it to power their applications. Whether you’re building a complex enterprise system, a user-friendly API, or a dynamic website builder, Nest.js has the capabilities to bring your vision to life. One of the most compelling Nest.js use cases involves Clockify, a time tracking application.

Nest.JS Dis advantages

It leverages TypeScript, a superset of JavaScript, to enable developers to write structured and statically typed code, enhancing code quality and maintainability. Nest.js is a server-side Node.js framework that’s great for building highly testable and maintainable backend applications. You can create countless types of applications with Node.js; you’re only limited by your applications’ features. NestJS is a backend framework for building server-side applications using Node.js. It is built on top of Express.js, making it highly extensible and familiar to developers who have worked with Express before. However, what sets NestJS apart is its architecture, heavily inspired by Angular, which promotes a modular and structured approach to application development.

• Express.js removed extra code and allowed ease in development and Nest.js restricted developers to use good coding practices.
• This change is largely transparent to most users but significantly boosts startup performance for applications with large dynamic modules.
• Install the necessary packages and configure TypeORM in your application module.
• This powerful Node.js framework provides an out-of-the-box application architecture, paving the way for developers to create highly testable, scalable, and easily maintainable applications.
• As we reach the end of our comprehensive exploration of Nest.js, we hope you now have a deep understanding of this powerful framework.
• Explore the essential guide to Git Stash with practical examples and expert tips.
• It is a Node.js server-side framework, which is built on the top of the typescript that allows you to efficiently build scalable and easily maintainable applications.

With the help of Node.js powered GraphQL + TypeScript, you can make more efficient and independent APIs and connect them to Refine easily. In this article, we have laid a solid foundation for Nest.js and why you and your company should consider switching to it. 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.

Hello, nest!

• It provides tools and patterns specifically for microservice architecture, such as support for various transport layers (TCP, Redis, NATS, MQTT, etc.).
• Get your team up to speed with guided workshops on a huge variety of topics.
• In the next section, we’ll explore what it is used for and different companies using the framework in production.
• Heavily inspired by Angular, Nest is a modern Node.js framework built on top of Node.js and TypeScript, and used for building efficient, reliable, and scalable apps.
• NestJS is a progressive Node.js framework that combines the power of TypeScript with the elegance of modern JavaScript, making it a fantastic choice for both beginners and experienced developers.

🛠️Let`s just make a new nest projectAll you have to do is type the following commands in order. Before we really get into what Nest.js is, though, let’s backtrack a little bit. In the subsequent section, we’ll delve into the pros and cons of Nest.js, elucidating both its strengths and weaknesses to aid in your decision-making process. Now when you run the application, you’ll see a message stating that the server is running on localhost on port 4000. The import statement loads all the variables defined in the .env file and populates the Node.js process.env collection with those variables. Listing 2 is an example of how to define a Service Provider and then inject the provider into the Controller and define both the Controller and Provider inside the module.