let Server = require('./api/server');
let server = new Server();

server.start()
	.then(() => {
		console.log(new Date().toISOString(), "Server started!");
	});
let Server = require('./api/server');
let server = new Server();
let logger = require('./api/logger');

server.start()
	.then(() => {
		logger.log("Server started!");
	});
Use logger