This project is to test authentication and authorization in GraphQL-Server.
It is built with Node.js.
It's enough to downlaoad and to install npm packages nedded for running project.
But in Playground screen you can't test the functions which need authorization to run them.
For that you can download the Angular project which sends requests to this project. The relevant link is that: https://github.com/azizkale/Angular-Project-Authentication-and-Authorization-in-GraphQL
And you can find info for how to build this server with following article. https://medium.com/javascript-in-plain-english/authentication-and-authorization-with-jwt-in-a-graphql-server-d9cf6085f961