timeout-scheduler

var Scheduler = require('timeout-scheduler');

var scheduler = new Scheduler();

scheduler.on('timeout', function(key, data) {
    // will trigger after around 2 and 3 seconds
});

scheduler.schedule('key1', 2000);
scheduler.schedule('key2', 3000, {foo: 'bar'}); // attach data to the scheduled timeout
scheduler.schedule('key3', 4000);

scheduler.cancel('key3');

schedule.has('key1'); // true

schedule.has('key3'); // false