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Nest js is node js framework, which uses already battle ready and production tested frameworks like Express or fastify.

It uses progressive JavaScript, is built with and fully supports TypeScript (yet still enables developers to code in pure JavaScript) and combines elements of OOP (Object Oriented Programming), FP (Functional Programming), and FRP (Functional Reactive Programming).

Why ? One more....

While plenty of superb libraries, helpers, and tools exist for Node (and server-side JavaScript), none of them effectively solve the main problem of - Architecture.

Nest provides an out-of-the-box application architecture which allows developers and teams to create highly testable, scalable, loosely coupled, and easily maintainable applications. The architecture is heavily inspired by Angular.

$ npm i - g @nestjs/cli
$ nest new project - name
$ npm run start // To get started :dev for watch mode.

Framework means folders and