TypeError: sequelize.sync is not a function

فایل‌های مدل طبق فیلم آموزشی تعریف شده است

لطفا راهنمایی بفرمایید

index.js

import { Sequelize } from 'sequelize';

import ContactModel from './contact.js';

import ContactCategoryModel from './contactcategory.js';

const sequelize = new Sequelize('postgres' , 'Postgres' , '123' ,{

host : 'localhost',

dialect : 'postgres'

});

const contact = ContactModel(sequelize);

const contactCategory = ContactCategoryModel(sequelize);

contact.hasOne(contactCategory);

contactCategory.belongsTo(contact);

export default {sequelize};

export {contact};

export {contactCategory};

فایل index.mjs

import sequelize from './models/index.js';

import { Sequelize } from 'sequelize';

import contact from './models/contact.js';

try{

await sequelize.sync({force:true});

console.log('All models were synchronized successfully.');

}catch(error){

console.log('error in sync' , error);

};