If you have used Nest.js recently probably have realised that the class-validator library has a high vulnerability in it, which is not being addressed for quite a while. The ValidationPipe makes use of the powerful class-validator package and its declarative validation decorators. The ValidationPipe provides a convenient approach to enforce validation rules for all incoming client payloads, where the specific rules are declared with simple annotations in local class/DTO declarations in each module. The class-validator package works in conjunction with another package class-transformer. The lack of maintenance made the Nuxt team fork the original packages and take care of the maintenance.

This blog article is a continuation from the previous blog article about Nest.js Authorisation with Firebase Auth. If you have’t read that article you will not be able to follow along. The previous article can be found below. In this article we will be using custom route decorators in Nest. We will be creating our own @CurrentUser decorator and use it in the module controllers anytime we want to get the current logged user. Let’s have a look at how we can achieve this.

In this blog article we will be creating a Nest application where users (with different roles) can sign-up and sign-in to the application. Specific permissions can be configured for each user access to specific endpoints, based on the user role. We are going to use Firebase Auth to help us with user Authentication and Authorisation. Before we continue let’s first install the Nest CLI. That will help us create our project much quicker. To install Nest CLI globally use the following command in your terminal

In this blog article we will be creating a Nest application where users (with different roles) can sign-up and sign-in to the application. Specific permissions can be configured for each user access to specific endpoints, based on the user role. We are going to use Okta to help us with user Authentication and Authorisation. Okta is an Identity as a Service (IDaaS). This is a cloud-based authentication or identity management subscription service. Okta can be used for a number of different applications such as Adaptive multi-factor authentication, single sign-on, Universal Directory etc. Nest is a progressive Node.js framework for building efficient, reliable and scalable server-side applications with TypeScript.

Modules have become a major part of the JavaScript ecosystem. They allow us to split our JavaScript programs up into separate smaller parts, called modules, that can be imported when needed. In this article, we will have a look at how we can include local modules in our Node.js app, and then see how that differentiates from including them in Firebase Cloud Functions. Before we continue, do note that this is not an introduction to Firebase. A basic understanding of Firebase and JavaScript is required before reading on about the examples that I'm about to explain.

We all know that in JavaScript there is no event that fires when a value of a variable changes. But by defining getters and setters in the object this is now possible. First, define a new property on an object with "Object.defineProperty" method. As a first argument, we pass the object on which to define the property. If the object is defined in the global scope, "this" will refer to the window object. In the second argument, we will define the name of the property. In our case, we define a property with name "name". The third argument is the descriptor for the property being defined.

Firebase as a platform that offers a wide range of services to developers to build, improve, and grow their apps with little or almost no effort. This includes services like authentication, databases, analytics, file storage, push messaging and more. When it comes to user authentication, Firebase provides an Authentication service that allows for codes to be written in order for users to be logged into an app right from the client side, and limit user access to resources in other Firebase products. This is fairly simple to use without the need to implement any backend solution. Firebase also provides an Admin SDK that allows developers to build a custom backend if required.