src/db/sequelize.js

import { Sequelize } from 'sequelize'
import sqlite3 from 'sqlite3'

const sequelize = new Sequelize('database', null, null, {
  dialect: 'sqlite',
  storage: './database.db',
  define: {
    timestamps: false,
    freezeTableName: true
    // operatorsAliases: false
  },
  dialectModule: sqlite3
  // logging: console.log
})

sequelize.authenticate().then(function () {
  console.log('Connection has been established successfully.')
}).catch(function (err) {
  console.log('Unable to connect to the database:', err)
})

export default sequelize