A Complete Code for JWT Authentication/Role Based Authorization in GraphQL

Sharing platform independent(~almost) middleware code for JWT Authentication and Role based Authorization.

YouTube Video Tutorial

Tools: 

Middleware: Node JS, Express, GraphQL, JWT, CORS, SEQUELIZE
front-end: React, Vue JS, Angular 6.0 or Plain HTML/CSS/JS
back-end: SQL AND/OR NO-SQL database (MYSQL & MongoDB used in example)

README.STEP-1: DB Installation

README.STEP-2: Middleware Installation

README.STEP-3: Front-end Installation