mysql

const mysql = require('mysql2/promise');
const config =  {
  user: 'root',
  password: 'root',
  database: 'testdb',
  host: 'mysql',
  connectTimeout: 80000,
};
mysql.createConnection(config)
  .then((connection) => {
    console.log(`connection established to local ${config.database} database`);
    global.MYconnection = connection;
  })
  .catch((e) => {
    console.log(e);
    eventEmitter.emit('connectionFailed', 'Destination');
  });