Method delta

packages/quill/src/blots/block.ts:19–24

()

  cache: { delta?: Delta | null; length?: number } = {};

  delta(): Delta {
    if (this.cache.delta == null) {
      this.cache.delta = blockDelta(this);
    }
    return this.cache.delta;
  }

  deleteAt(index: number, length: number) {
    super.deleteAt(index, length);