Method getRootBlock

packages/blockly/core/block.ts:660–669

* Return the top-most block in this block's tree. * This will return itself if this block is at the top level. * * @returns The root block.

()

   * @returns The root block.
   */
  getRootBlock(): this {
    let rootBlock: this;
    /* eslint-disable-next-line @typescript-eslint/no-this-alias */
    let block: this | null = this;
    do {
      rootBlock = block;
      block = rootBlock.parentBlock_;
    } while (block);
    return rootBlock;
  }

  /**
   * Walk up from the given block up through the stack of blocks to find