问Sequelize TypeError: defineCall不是函数

EN

   C:\-----\node_modules\sequelize\lib\sequelize.js:392
          this.importCache[path] = defineCall(this, DataTypes);
                                   ^

    TypeError: defineCall is not a function
        at Sequelize.import (C:\----\node_modules\sequelize\lib\sequelize.js:392:32)
 at C:\----\models\index.js:25:32

var Sequelize = require('sequelize');

var config = {
  dialect: 'sqlite',
  storage: 'library.db'
};

var connection = new Sequelize(config);
var contents = fs.readdirSync(__dirname);
var db = {};


contents = contents.filter(function(file){

  var currFileName = __filename.split('/');
  var checkOne = file.substr(file.length - 3, 3) === '.js';
  var checkTwo = file !== currFileName[currFileName.length - 1];

  return checkOne && checkTwo;
});

contents.forEach(function(file){
  var path = [__dirname, file].join('/');
  var model = connection.import(path);

  db[model.name] = model;
});

Object.keys(db).forEach(function(modelName){
  var model = db[modelName];

  if(model.associate) {
    model.associate(db);
  }
});


module.exports = {
  models: db,
  connection: connection
};