authTest.js

const jwt = require("jsonwebtoken")

const jwtTest = () => {
    try {
        // when a user is logged in, we create a token
            // signing up for the app
            // logging in to the app
        
        // create a payload of user data
        const payload = {
            name: "Weston",
            id: "2345;lkfg90aw35r2qfas",
            email: "w@b",
            isAdmin: false 
            // DO NOT PUT THE USER's PASSWORD
        }
        // we need to have a secret to sign the jwt with
        const secret = "I ate candy for breakfast"
        const token = jwt.sign(payload, secret)

        // signature = hashFunction({ payload information } + secret)
        // when verifying a request, we decode and verify in the same step
        const decode = jwt.verify("eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJuYW1lIjoiV2VzdG9uIiwiaWQiOiIyMzQ1O2xrZmc5MGF3MzVyMnFmYXMiLCJlbWFpbCI6IndAYiIsImlzQWRtaW4iOnRydWUsImlhdCI6MTY4MzA1Mjg0MX0.8wl1ArNM-WPhKf5Jg8O7stNQLNT_4gbX_m2qsibcL1I", secret)

    } catch (err) {
        // a problem with a token will land us down here in the catch
        console.log(err)
    }
}

jwtTest()