Method comparePosition

packages/designer/src/document/node/node.ts:1018–1020

* 判断与其它节点的位置关系 * * 16 thisNode contains otherNode * 8 thisNode contained_by otherNode * 2 thisNode before or after otherNode * 0 thisNode same as otherNode

(otherNode: INode)

   *  0  thisNode same as otherNode
   */
  comparePosition(otherNode: INode): PositionNO {
    return comparePosition(this, otherNode);
  }

  unlinkSlot(slotNode: INode) {
    const i = this._slots.indexOf(slotNode);