var mysql = require('mysql');

var connection = mysql.createConnection({
          host     : 'localhost',
          user     : 'root',
          password : 'root',
          database : 'dbname',
          port: '8889'
        });

connection.connect(function(err) {
          if (err) {
            console.log("Error connecting to DB: " + err);
            throw err;
          }
        });

TypeError: Cannot read property 'on' of undefined
        at Protocol._enqueue (/Applications/MAMP/htdocs/Angular2/myproject/node_modules/mysql/lib/protocol/Protocol.js:152:5)
...

Error connecting to DB: Error: Connection lost: The server closed the connection.