Method validateIndex

src/components/modules/blockManager.ts:990–992

* Validates that the given index is not lower than 0 or higher than the amount of blocks * * @param {number} index - index of blocks array to validate * @returns {boolean}

(index: number)

   * @returns {boolean}
   */
  private validateIndex(index: number): boolean {
    return !(index < 0 || index >= this._blocks.length);
  }

  /**
   * Block mutation callback