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.

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.