MERN Authentication Tutorial (Net Ninja)

Net Ninja adds user authentication to a MERN app step by step. Starting from a starter project, lessons build user routes, controller and model, sign-up with hashed passwords, email and password validation, JSON Web Tokens in theory and practice, and login. On the React side learners create an auth context, login and sign-up forms, and useSignup, useLogout and useLogin hooks, then set the initial auth state, protect API routes and make authorised requests. It suits learners who have built a basic MERN app.