// [4] CREATE Server
// app = function => receives req & res
const server = http.createServer(app);
server.on("error", errorHandler);
server.on("listening", () => {
const address = server.address();
const bind = typeof address === "string" ? "pipe " + address : "port " + port;
console.log("Listening on " + bind);
});
// [=>] LISTEN Server on chosen port
server.listen(port);