Method add

packages/core/src/utils/SafeLoopArray.ts:27–30

* Add item to the array. * @param index - The index of the array * @param item - The item which want to be added

(index: number, item: T)

   * @param item - The item which want to be added
   */
  add(index: number, item: T): void {
    this._array.splice(index, 0, item);
    this._loopArrayDirty = true;
  }

  /**
   * Remove item from the array.