passport module for the express 4.x local auth sample app.

passport.js

/**
*Module dependencies
*/
var
  passport = require('passport'),
  config = require('./config'),
  User = require('../models/users'),
  utilities = require('../models/utilities');
/**
*Module variables
*/
var
  host = config.host,
  errHandler = utilities.errHandler,
  LocalStrategy = require('passport-local').Strategy;
/**
*Configuration and Settings
*/
passport.serializeUser(function(user, done) {
  done(null, user.id);
});

passport.deserializeUser(function(id, done) {
  User.findById(id, function(err, user) {
    if(err) {
      console.error('There was an error accessing the records of' +
      ' user with id: ' + id);
      return console.log(err.message);
    }
    return done(null, user);
  })
});
/**
*Strategies
*/
//---------------------------Local Strategy-------------------------------------
passport.use('local-signup', new LocalStrategy({
      usernameField : 'email',
      passwordField : 'password',
      passReqToCallback : true
  },
  function(req, email, password, done) {
    process.nextTick(function() {
      User.findOne({email: email}, function(err, user) {
        if(err) {
          return errHandler(err);
          }
        if(user) {
          console.log('user already exists');
          return done(null, false, {errMsg: 'email already exists'});
        }
        else {
            var newUser = new User();
            newUser.username = req.body.username;
            newUser.email = email;
            newUser.password = newUser.generateHash(password);
            newUser.save(function(err) {
              if(err) {
                console.log(err);
                if(err.message == 'User validation failed') {
                  console.log(err.message);
                  return done(null, false, {errMsg: 'Please fill all fields'});
                }
                return errHandler(err);
                }
              console.log('New user successfully created...',newUser.username);
              console.log('email',email);
              console.log(newUser);
              return done(null, newUser);
            });
          }
      });
    });
}));
//---------------------------local login----------------------------------------
passport.use('local-login', new LocalStrategy({
        usernameField : 'email',
        passwordField : 'password',
        passReqToCallback : true
    },
    function(req, email, password, done) {
        User.findOne({email: email}, function(err, user) {
            if(err) {
              return errHandler(err);
              }
            if(!user) {
              return done(null, false, {errMsg: 'User does not exist, please' +
              ' <a class="errMsg" href="/signup">signup</a>'});
              }
            if(!user.validPassword(password)) {
              return done(null, false, {errMsg: 'Invalid password try again'});
              }
            return done(null, user);
        });

}));
/**
*Export Module
*/
module.exports = passport;