sequelize.import is not a function

I'm new to express.

I want to import files to sequelize and declared:

const model = sequelize.import(path.join(__dirname, file))

                             ^

It returned the following type error

TypeError: sequelize.import is not a function

And then, edited code to

var model = require(path.join(__dirname, file))(sequelize, Sequelize);

                                         ^

Then the error is:

TypeError: require(...) is not a function

I think it is the error in importing stuff....

Here is my whole file code:

const fs = require('fs');

const path = require('path');

const Sequelize = require('sequelize');

const config = require('../config/config');

const db = {}

var __dirname = path.resolve();


const sequelize = new Sequelize(
    config.db.database,
    config.db.user,
    config.db.password,
    config.db.options
)


fs

    .readdirSync(__dirname)

    .filter((file) =>
        file !== 'index.js'
    )

    .forEach((file) => {

        //const model = sequelize.import(path.join(__dirname, file))

        var model = require(path.join(__dirname, file))(sequelize, 
Sequelize);

        db[model.name] = model

    })


db.sequelize = sequelize
db.Sequelize = Sequelize

module.exports = db