Simple clock that cares about time... but doesn't really care about your business!
"Hortator" is a Latin word which, in the Old Rome, designated the slave runner who was giving rowing beats on the Roman triremes to communicate to the slave rowers the speed the captain wanted.
var Clock = require("hortator");
var clock = new Clock({period: 0.5}); // seconds
clock.on("tick", function(tickTime, delay) {
/* do your business */
});
clock.start();
// ...
clock.stop();