Implementing login, signup, and authenticated routes in the backend using JWTs

Now that we’ve learned about JWTs, we’ll implement them in our backend. First, we need to create a user model in our database, after which we can create routes to sign up and log into our app. Finally, we will implement authenticated routes that are only accessible with a JWT.

Creating the user model

We’ll start the backend implementation by creating a user model, as follows:

1. Copy the ch5 folder to a new ch6 folder, as follows:

   $ cp -R ch5 ch6

2. Open the ch6 folder in VS Code.
3. Create a new backend/src/db/models/user.js file and define a new userSchema inside it:

   import mongoose, { Schema } from 'mongoose'
   const userSchema = new Schema({

4. A user should have a required unique username and a required password:

     username: { type: String, required: true, unique: true },
     password: { type: String, required: true },
   })

5. Create and export the...