can I add/remove promises at run time?

[powerbilayeredmap]

var queue = new SequentialTaskQueue();
queue.push(() => {
    console.log("first task");
});
setTimeout(()=>{
   queue.push(() => {
       console.log("second task");
   });
}
,500);

will task 1 always complete before task 2?

[BalassaMarton]

Yes, tasks are executed in the order they were added, and the next task is executed only if the previous one has been completed or cancelled.