Method cloneTree

handsontable/src/utils/dataStructures/tree.ts:162–171

* @memberof TreeNode# * @function cloneTree * * Clones a tree structure deeply. * * For example, for giving a tree structure: * .--(B1)--. * .-(C1) .-(C2)-.----. * (D1) (D2) (D3) (D4) * * Cloning a tree starting from C2 node creates a mirrored tree struc

(nodeTree: TreeNode<T> = this)

   * @returns {TreeNode}
   */
  cloneTree(nodeTree: TreeNode<T> = this): TreeNode<T> {
    // The spread of `T extends object` widens to a plain index type, so re-assert it as `T`.
    const clonedNode = new TreeNode<T>({ ...nodeTree.data } as T);

    for (let i = 0; i < nodeTree.childs.length; i++) {
      clonedNode.addChild(this.cloneTree(nodeTree.childs[i]));
    }

    return clonedNode;
  }

  /**
   * Replaces the current node with a passed tree structure.