Build Your First NestJS Application

Build Your First NestJS Application

Learn how to build a basic application using NestJS. NestJs is a popular Node.js framework that is built with typescript and makes use of object-oriented programming, functional programming, and functional reactive programming. NestJs boasts that it provides a framework for building scalable server-side applications.

Learn how to build a basic application using NestJS.

NestJs is a popular Node.js framework that is built with typescript and makes use of object-oriented programming, functional programming, and functional reactive programming. NestJs boasts that it provides a framework for building scalable server-side applications.

NestJs integrates nicely with Okta’s single sign-on provider. Okta makes securing a web service, such as the one you will build, quick and easy.

Create Your Okta Application with the CLI

The first thing you will need to do is sign up for an Okta developer account if you don’t already have one. This account is free forever and allows you to start building applications secured with Okta immediately. To do this you will use the Okta CLI. If you haven’t worked with the CLI yet you can check out the full documentation here.

Start by opening the terminal application of your choice. In the terminal, use the command okta register. This command will ask you for your name and email and then create an Okta developer account for you. If you already have an Okta developer account, you can use the okta login command and follow the on-screen instructions to log in to your organization. Once the CLI is set up for your organization, run the command okta apps create and give the application a meaningful name. I named mine library-api but you can name yours whatever you like. Select Single Page App as the application type. Even though you are creating an API in this tutorial, you will be using Postman as the “application” that will consume the API. This can be even more beneficial if you actually create a single-page application later. You’ll be able to use this client ID and issuer in that application.

Since you are going to use Postman to test, enter https://oauth.pstmn.io/v1/callback as your Login Redirect URL. Set the Logout Redirect URI to https://oauth.pstmn.io/. If your organization has multiple authorization servers, you can use default for this tutorial. After the CLI runs, it will return your Issuer and Client ID. Make note of these as you will need them in your application.

Create Your NestJs Application

Next, you can create your Nest.js application. If you haven’t installed the nest.js CLI yet then you should do that before beginning. Run the command npm i -g @nestjs/[email protected]. Once that completes, run nest new library-api to create a new application called library-api.

nestjs node nodejs javascript web-development

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