Database Config of NodeJS Backend wih Express and MySQL using DotEnv

db.config.js

'use strict';

const mysql = require('mysql');

//- NEW
require('dotenv').config();

const { DB_HOST, DB_USER, DB_PASS, DB_DATABASE } = process.env;
//-

//- UPDATED
const dbConnection = mysql.createConnection({
  host     : DB_HOST,
  user     : DB_USER,
  password : DB_PASSWORD,
  database : DB_DATABASE
});
//-

dbConnection.connect((err) => {
  if (err) throw err;

  console.log('Database Connected!');
});

module.exports = dbConnection;