NodeJS EventEmitter: how to wait for all events to finish?

Got a class, it extends EventEmitter.

Got function that fires a bunch of events on that emitter. These events trigger async tasks and they all have a done() callback.

What's the proper way to wait for all tasks to finish? I just want the process to sit there and wait for events until a certain event is fired (ALL_DONE), in which case it should exit.

I mean I know this can be done in multiple ways probably, but what I'm asking is can I do it without any packages, plugins etc, using just nodeJS APIs?

I want to wait without blocking the main thread.

EDIT:

Thx for the responses! I'm not sure these apply to my case. I should have provided more details. This is what I have:

class FoobarEmitter extends EventEmitter {  protected checkEventStatus() {    // this has some logic to check if all done() callbacks have been called or not.     if(allDone) {     this.emit('ALL_DONE')    }  }  protected fireEvents() {    for() {       this.emit('SOME_EVENT', () => {})       this.checkEventStatuses();    }    }   protected registerHandlers() {       this.on('SOME_EVENT', async (done) => {         // does async stuff         // might also call this.emit('OTHER_EVENT', () => {})         done();       })       this.on('ALL_DONE', () => { process.exit() })   }    constrcutor() {       this.registerHandlers();       this.fireEvents()   }}new FoobarEmitter()

So this will not wait for all events. The ones fired from callbacks won't finish. Some of them runs, then the process just stopes and ALL_DONE is never fired.