Method add

src/PriorityQueue.ts:130–142

(item: T)

  }

  public add(item: T): boolean {
    const i = this._size;
    if (i >= this._queue.length) {
      this.grow();
    }
    this._size = i + 1;
    if (i === 0) {
      this._queue[0] = item;
    } else {
      this.siftup(i, item);
    }
    return true;
  }

  public poll(): T | null {
    if (this._size === 0) {