Method push

src/modules/taskManager.ts:17–29

(item: T)

  private resolveWaitingPop?: (value: T) => void;

  push(item: T) {
    this.queue.push(item);
    if (this.resolveWaitingPop) {
      // Since TypeScript now expects queue.shift() to always return a T,
      // we need to assure it's not called on an empty array.
      // The logic ensures it's never empty at this point, but TypeScript doesn't know that.
      const shiftedItem = this.queue.shift();
      if (shiftedItem !== undefined) {
        this.resolveWaitingPop(shiftedItem);
      }
      this.resolveWaitingPop = undefined;
    }
  }

  count() {
    return this.queue.length;