Method queueUpdate

packages/react-aria/src/collections/Document.ts:551–576

()

  }

  queueUpdate(): void {
    if (this.dirtyNodes.size === 0 || this.queuedRender) {
      return;
    }

    // Only trigger subscriptions once during an update, when the first item changes.
    // React's useSyncExternalStore will call getCollection immediately, to check whether the snapshot changed.
    // If so, React will queue a render to happen after the current commit to our fake DOM finishes.
    // We track whether getCollection is called in a subscription, and once it is called during render,
    // we reset queuedRender back to false.
    this.queuedRender = true;
    this.inSubscription = true;

    // Clone the collection to ensure that React queues a render. It will call getCollection again
    // during render, at which point all the updates will be complete and we can return
    // the new collection.
    if (!this.isSSR) {
      this.collection = this.collection.clone();
    }

    for (let fn of this.subscriptions) {
      fn();
    }

    this.inSubscription = false;
  }

  subscribe(fn: () => void) {
    this.subscriptions.add(fn);