Add a URL to the output for ease of opening.

main.js

@@ -282,6 +282,7 @@ async function main() {
 	ports.forEach(port => {
 		app.listen(port);
 		console.log(" * Now listening on port " + port + ".");
+		console.log(" * URL: http://localhost:" + port);
 	});
 	console.log("Done! Now we wait...");
 }