const Sequelize = require('sequelize');
const sequelize = new Sequelize('database', 'root', 'passwd', {
  host: 'localhost',
  dialect: 'mysql',

    // http://docs.sequelizejs.com/manual/tutorial/querying.html#operators
  operatorsAliases: false
});
sequelize
  .authenticate()
  .then(() => {
    console.log('Connection has been established successfully.');
  })
  .catch(err => {
    console.error('Unable to connect to the database:', err);
  });