Method forEach

src/core/data-structures/priority-queue.js:75–80

* @param {function(T):*} callback

(callback)

   * @param {function(T):*} callback
   */
  forEach(callback) {
    let index = this.length;
    while (index--) {
      callback(this.queue_[index].item);
    }
  }

  /**
   * Dequeues the max priority item.