Connecting to MySQL on Node.js not initialized

I can't connect to the MySQL-database. I've googled some solutions, but none seems to work, or perhaps I haven't understood them. This is the setup:

let express = require("express");
let mysql      = require("mysql");
let http = require("http");

let app  = express();
http.createServer(app).listen(8000, function() {
    console.log("Listening on http://localhost:" + port)
});

var connection = mysql.createConnection({
    host: "127.0.0.1",
    user: "root",
    password: process.env.DB_PASSWORD,
    database: "users",
    port: 8000
});

connection.connect();

connection.query("SELECT * FROM user", function(err, rows, fields)
{
    if (err) {
        console.error("error connecting: " + err.stack);
        return;
    }

    console.log(rows[0]);
});

connection.end();

Tried to setup the connection with "socketPath" and with another port, but they both returned error:

Error: connect ECONNREFUSED 127.0.0.1:3306
at Object.exports._errnoException (util.js:1034:11)
at exports._exceptionWithHostPort (util.js:1057:20)
at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1099:14)
--------------------
at Protocol._enqueue (/vagrant/node_modules/mysql/lib/protocol/Protocol.js:141:48)
at Protocol.handshake (/vagrant/node_modules/mysql/lib/protocol/Protocol.js:52:41)
at Connection.connect (/vagrant/node_modules/mysql/lib/Connection.js:130:18)
at Object.<anonymous> (/vagrant/app.js:12:12)
at Module._compile (module.js:571:32)
at Object.Module._extensions..js (module.js:580:10)
at Module.load (module.js:488:32)
at tryModuleLoad (module.js:447:12)
at Function.Module._load (module.js:439:3)
at Module.runMain (module.js:605:10)

When the connection and listen listens on same port, it doesn't return any errors, but the connection doesn't seem to initialize.

console.log(connection.connect()); // -> undefined

I'm very new to using MySQL to node so I'm probably doing this all wrong, but can't figure out what the problem is

As it turns out, I was a bit stupid. I was running the application on a Vagrant-server(virtual server), and I was trying to connect to my local-server. As soon as I tried to connect to the vagrant-server, everything worked properly. I also didn't have mysql-server properly installed to my vagrant machine.