Man, i know... Those tutorials on your youtube channel,
just an example of app, just for design and so on.
But guys will get it as manual for further implementations.
And it is wrong way to teach people do things like that:

  "dependencies": {
    "express": "*",
    "mongoose": "*",
    "bcryptjs": "*",
    "cors": "*",
    "jsonwebtoken": "*",
    "body-parser": "*",
    "passport": "*",
    "passport-jwt": "*"
  },

These dependencies has updated (few of them with breaking changes) sins you've been accomplishing your app about year ago.
Be careful, be professional. Please!
Peace!

while sending data through http://localhost:3000/users/register gives this error

SyntaxError: Unexpected string in JSON at position 43
i copies same code and run still giving this error

Error: Illegal arguments: undefined, string
at _async (C:\Users\OPERATIONS\Documents\nodeauthapp\node_modules\bcryptjs\dist\bcrypt.js:214:46)
at Object.bcrypt.hash (C:\Users\OPERATIONS\Documents\nodeauthapp\node_modules\bcryptjs\dist\bcrypt.js:220:13)
at bcrypt.genSalt (C:\Users\OPERATIONS\Documents\nodeauthapp\models\user.js:37:12)

Hello,

I was following your tutorial from youtube it works fine,
You explained it very well, thank you for that.
I just have a little query why do we need to prefix 'JWT ' to token while sending a response back.
By the way with prefixing 'JWT ' it works fine but as soon as I remove 'JWT ', it didn't work, I'm wondering why this is happening? any specific logical or syntactical reason?

im having trouble with the comparePassword function,
i try to authenticate via Post and I get a error

Im using the latest npm package

module.exports.comparePassword = function(candidatePassword, hash, callback){ bcrypt.compare(candidatePassword, hash, (err, isMatch) => { if(err) throw err; callback(null, isMatch); }); }

user = new User({
name,
email,
avatar,
password
});

	// Encrypt password

	const salt = await bcrypt.getSalt(10);

	user.password = await bcrypt.hash(password, salt);

Hello brad,
I was following your tutorial from youtube, and while running authentication in postman Iam getting error that Error: Expected "payload" to be a plain object. at validate (/home/vijo/Music/MeanLearn/node_modules/jsonwebtoken/sign.js:34:11) at validatePayload (/home/vijo/Music/MeanLearn/node_modules/jsonwebtoken/sign.js:56:10) at Object.module.exports [as sign] (/home/vijo/Music/MeanLearn/node_modules/jsonwebtoken/sign.js:108:7) at User.comparePassword (/home/vijo/Music/MeanLearn/routes/users.js:41:33) at bcrypt.compare (/home/vijo/Music/MeanLearn/models/user.js:46:9) at /home/vijo/Music/MeanLearn/node_modules/bcryptjs/dist/bcrypt.js:297:21 at /home/vijo/Music/MeanLearn/node_modules/bcryptjs/dist/bcrypt.js:1353:21 at Immediate.next [as _onImmediate] (/home/vijo/Music/MeanLearn/node_modules/bcryptjs/dist/bcrypt.js:1233:21) at runCallback (timers.js:789:20) at tryOnImmediate (timers.js:751:5) at processImmediate [as _immediateCallback] (timers.js:722:5)

Please help me to resolve this

passport.js

`const JwtStrategy = require('passport-jwt').Strategy;
const ExtractJwt = require('passport-jwt').ExtractJwt;
const User = require('../models/user');
const config = require('../config/database');

module.exports = function(passport){
let opts = {};
opts.jwtFromRequest = ExtractJwt.fromAuthHeaderWithScheme("jwt");
opts.secretOrKey = config.secret;
passport.use(new JwtStrategy(opts, (jwt_payload, done) => {
User.getUserById(jwt_payload.data._id, (err, user) => {
if(err){
return done(err, false);
}

  if(user){
    return done(null, user);
  } else {
    return done(null, false);
  }
});
}));
}`