Method notify

packages/effect/src/unstable/reactivity/AtomRef.ts:133–139

(a: A)

  listeners: Listener<A> | null = null

  notify(a: A) {
    let listener = this.listeners
    while (listener !== null) {
      listener.f(a)
      listener = listener.next
    }
  }

  subscribe(f: (a: A) => void): () => void {
    const listener: Listener<A> = {