Q:

TypeError: JwtStrategy is not a constructor; NodeJS

I am trying to make a MEAN Stack (Nodejs,Mongo,Angular app) and right now I am trying to make the API Authentication and Token. 
I am following this tutorial https://www.youtube.com/watch?v=6pdFXmTfkeE&t=185s  and my passport.js look like that right now:
passport.js 

const JwtStrategy = require('passport-jwt').Stategy;
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");
    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);
            }
        });
    }));
} 

I am receiving the next error : 

TypeError: JwtStrategy is not a constructor
      at module.exports (C:\Users\dan.diaconu\MakeIT\api\config\passport.js:10:18)
      at Object. ( C:\Users\dan.diaconu\MakeIT\api\app.js:28:29)
      at Module._compile (module.js:652:30)
      at Object. Module._extensions..js (module.js:663:10)
      at Module.load (module.js:565:32)
      at tryModuleLoad (module.js:505:12)
      at Function. Module._load (module.js:497:3)
      at Function. Module.runMain (module.js:693:10)
      at startup (bootstrap_node.js:188:16)
      at bootstrap_node.js:609:3

Any ideas please ?  Thank you! :) 

A:

You have typo in the require statement Stategy. 
Change 
const JwtStrategy = require('passport-jwt').Stategy;
to 
const JwtStrategy = require('passport-jwt').Strategy;

