sequelize: Error in sequelize.import: defineCall is not a function

What you are doing?

I just had this line in my bin/www require('../models') this load the index.js (seen below). The it generated an error.

File structure in the models folder: models |- index.js |- user.js

index.js:

'use strict';

var fs        = require('fs');
var path      = require('path');
var Sequelize = require('sequelize');
var basename  = path.basename(module.filename);
var env       = process.env.NODE_ENV || 'development';
var config    = require('../config/config.json')[env];
var db        = {};

if (config.use_env_variable) {
  var sequelize = new Sequelize(process.env[config.use_env_variable]);
} else {
    var sequelize = new Sequelize(process.env.MYSQL_DATABASE , process.env.MYSQL_USER, process.env.MYSQL_PASSWORD, {
        host: process.env.MYSQL_HOST || 'localhost',
        dialect: 'mysql',

        pool: {
            max: 5,
            min: 0,
            idle: 10000
        }
    });
}

fs
  .readdirSync(__dirname)
  .filter(function(file) {
    return (file.indexOf('.') !== 0) && (file !== basename) && (file.slice(-3) === '.js');
  })
  .forEach(function(file) {
    var model = sequelize.import(path.join(__dirname, file));
    db[model.name] = model;
  });

Object.keys(db).forEach(function(modelName) {
  if (db[modelName].associate) {
    db[modelName].associate(db);
  }
});

db.sequelize = sequelize;
db.Sequelize = Sequelize;

module.exports = db;

user.js:

module.export = function(sequelize, DataTypes)
{
    return sequelize.define('users', {
        username: {type: DataTypes.STRING, primaryKey: true},
        password: DataTypes.STRING,
        stamm: DataTypes.STRING,
        lv: DataTypes.String,
        countSipplinge: DataTypes.INT,
        avgAge: DataTypes.INT,
        sifüName: DataTypes.STRING,
        sifüEMail: DataTypes.STRING,
        sifüAdresse: DataTypes.STRING,
        sifüTel: DataTypes.STRING,
        email: DataTypes.STRING,
        admin: DataTypes.BOOLEAN,
        sippe: DataTypes.BOOLEAN,
        inactive: DataTypes.BOOLEAN
        })
    };

What do you expect to happen?

I expected to load the File and Model user.js as seen below:

What is actually happening?

But just run into an error:

C:\Users\Jan\WebstormProjects\BdPWebanwendung\node_modules\sequelize\lib\sequelize.js:691
    this.importCache[path] = defineCall(this, DataTypes);
                             ^

TypeError: defineCall is not a function
    at Sequelize.import (C:\Users\Jan\WebstormProjects\BdPWebanwendung\node_modules\sequelize\lib\sequelize.js:691:30)
    at C:\Users\Jan\WebstormProjects\BdPWebanwendung\models\index.js:32:33
    at Array.forEach (native)
    at Object.<anonymous> (C:\Users\Jan\WebstormProjects\BdPWebanwendung\models\index.js:31:4)
    at Module._compile (module.js:409:26)
    at Object.Module._extensions..js (module.js:416:10)
    at Module.load (module.js:343:32)
    at Function.Module._load (module.js:300:12)
    at Module.require (module.js:353:17)
    at require (internal/module.js:12:17)
    at Object.<anonymous> (C:\Users\Jan\WebstormProjects\BdPWebanwendung\config\passport.js:5:14)
    at Module._compile (module.js:409:26)
    at Object.Module._extensions..js (module.js:416:10)
    at Module.load (module.js:343:32)
    at Function.Module._load (module.js:300:12)
    at Module.require (module.js:353:17)

I checked with an debugger where it actually happens. The error is generated by the following line:

if (!this.importCache[path]) {
    var defineCall = (arguments.length > 1 ? arguments[1] : require(path));
    if (typeof defineCall === 'object') {
      // Babel/ES6 module compatability
      defineCall = defineCall.default;
    }
    this.importCache[path] = defineCall(this, DataTypes);
  }

defineCall is undefined and it was set by the line defineCall = defineCall.default;. In this line is defineCall the object of require('path/to/user.js') but defineCall.default is undefined.

Dialect: mysql Database version: 5.7.12 Sequelize version: 3.27.0