Express + passport-jwt

[AntonSE]

не получается до конца прикрутить passport-jwt к express

const express = require('express');
const bodyParser = require('body-parser');
const passport = require('passport');
 
const app = express();
 
const PORT = process.env.PORT || 5000;
 
 
app.use(bodyParser.urlencoded({extended:true}));
app.use(bodyParser.json());
app.use(passport.initialize());
app.use(passport.session());
 
require('./middleware/passport')(passport);
 
const routes = require('./settings/routes');
routes(app);
 
app.listen(PORT, () => {
    console.log(`App listen on port ${PORT}`);
})

Выдаёт ошибку на require('./middleware/passport')(passport);

TypeError: require(...) is not a function

вроде всё по документации делал

во на всякий случай содержимое /middleware/passport.js

const JwtStrategy = require('passport-jwt').Strategy;
const ExtractJwt = require('passport-jwt').ExtractJwt;
 
const db = require('./../settings/db');
const config = require('./../config');
 
 
const options = {
    jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
    secretOrKey: config.JWT
}
 
module.experts = passport => {
    passport.use(
        new JwtStrategy(options, (payload, done) => {
            try {
                db.query("SELECT `user_id`, `email` FROM `users` WHERE `user_id` = '" + payload.userId + "'", (error, rows, fields) => {
                    if (error) {
                        console.log(error);
                    } else {
                        if (user) {
                            done(null, user);
                        } else {
                            done(null, false);
                        }
 
                    }
                });
            } catch(e) {
                console.log(e)
            }
        })
    );
}

В чём прблемма понять не могу