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Я новичок в node, express и node, и я создаю функцию аутентификации с помощью passport.js. В своих маршрутах я использую функцию промежуточного программного обеспечения под названием «Проверка подлинности», чтобы проверить, не аутентифицирован ли пользователь, но я получаю эту ошибку: «Ошибка типа: req.IsAuthenticated не является функцией»

В чем здесь может быть проблема?

Мои маршруты:

 const express = require('express') const router = express.Router() const bcrypt = require('bcrypt') const passport = require('passport') const flash = require('express-flash') const session = require('express-session') const methodOverride = require('method-override')  const User = require('../models/user.model') const initializePassport = require('../passport-config') initializePassport(passport)  const app = express()  app.use(flash()) app.use(session({  secret: process.env.SESSION_SECRET,  resave: false,  saveUninitialized: false })) app.use(passport.initialize()) app.use(passport.session()) app.use(methodOverride('_method'))  /* Middleware function to check if user is authenticated */ function checkNotAuthenticated(req, res, next) {  if (req.isAuthenticated()) {  return res.redirect('/')  }  next() }  /* ------- Routes ------- */ /* Create new user */ router.post('/register', checkNotAuthenticated, async (req, res) =gt; {   /* Check if the email isn't already taken */  const emailIsTaken = await User.findOne({email: req.body.email})  if (emailIsTaken) return res.status(500).send('Email already used')   try {  const hashedPassword = await bcrypt.hash(req.body.password, 10)   const user = new User({  name: req.body.name,  password: hashedPassword,  email: req.body.email,  title: req.body.title,  about: req.body.about  })   user.save()   res.send('Success - User created')   } catch (err) {  res.status(500).send(err)  }  })  /* Login user */ router.post('/login', checkNotAuthenticated, passport.authenticate('local', {  successRedirect: '/',  failureRedirect: '/login',  failureFlash: true }))  /* Logout */ router.delete('/logout', (req, res) =gt; {  req.logOut()  res.redirect('/login') })  module.exports = router  

passport-config.js:

 const User = require('./models/user.model') const LocalStrategy = require('passport-local').Strategy const bcrypt = require('bcrypt')  function initializePassport(passport) {   const authenticateUser = async done =gt; {   /* Check if there's a user account created with that email */  const userFound = await User.findOne({email: req.body.email})  if (!userFound) return done(null, false, {message: 'Cannot find user with that email'})    /* Validate password */  try {  const checkPassword = await bcrypt.compare(req.body.password, userFound.password)   if (checkPassword) {  return done(null, userFound)  } else {  return done(null, false, {message: 'Incorrect password'})  }    } catch (err) {  return done(err)    }  }   passport.use(new LocalStrategy( { usernameField: 'email' }, authenticateUser) )   passport.serializeUser(done =gt; { done(null, userFound.id) })  passport.deserializeUser(done =gt; { done(null, userFound) }) }  module.exports = initializePassport  

Полная ошибка:

 TypeError: req.isAuthenticated is not a function  at checkNotAuthenticated (/home/German/Desktop/ger/code/projects/helpr/helpr-back/routes/users.route.js:27:11)  at Layer.handle [as handle_request] (/home/German/Desktop/ger/code/projects/helpr/helpr-back/node_modules/express/lib/router/layer.js:95:5)  at next (/home/German/Desktop/ger/code/projects/helpr/helpr-back/node_modules/express/lib/router/route.js:137:13)  at Route.dispatch (/home/German/Desktop/ger/code/projects/helpr/helpr-back/node_modules/express/lib/router/route.js:112:3)  at Layer.handle [as handle_request] (/home/German/Desktop/ger/code/projects/helpr/helpr-back/node_modules/express/lib/router/layer.js:95:5)  at /home/German/Desktop/ger/code/projects/helpr/helpr-back/node_modules/express/lib/router/index.js:281:22  at Function.process_params (/home/German/Desktop/ger/code/projects/helpr/helpr-back/node_modules/express/lib/router/index.js:335:12)  at next (/home/German/Desktop/ger/code/projects/helpr/helpr-back/node_modules/express/lib/router/index.js:275:10)  at Function.handle (/home/German/Desktop/ger/code/projects/helpr/helpr-back/node_modules/express/lib/router/index.js:174:3)  at router (/home/German/Desktop/ger/code/projects/helpr/helpr-back/node_modules/express/lib/router/index.js:47:12)  

 function checkNotAuthenticated(req, res, next) {  if (req.isAuthenticated()) {  return res.redirect('/')  }  next() }  

поместите эту функцию промежуточного программного обеспечения в нижней части вашего сценария непосредственно перед

 module.exports = router;