Method addObserver

repos/effect/packages/effect/src/internal/effect.ts:552–564

(cb: (exit: Exit.Exit<A, E>) => void)

  currentPreventYield!: boolean

  _dispatcher: Scheduler.SchedulerDispatcher | undefined = undefined
  get currentDispatcher(): Scheduler.SchedulerDispatcher {
    return this._dispatcher ??= this.currentScheduler.makeDispatcher()
  }

  getRef<X>(ref: Context.Reference<X>): X {
    return Context.get(this.context, ref)
  }
  addObserver(cb: (exit: Exit.Exit<A, E>) => void): () => void {
    if (this._exit) {
      cb(this._exit)
      return constVoid
    }
    this._observers.push(cb)
    return () => {
      const index = this._observers.indexOf(cb)