Function isTNodeDescendant

packages/core/src/debug/ai/di_graph.ts:214–221

* Checks if `node` is a descendant of `ancestor` within the SAME view. * * Since we are in the same view, we can safely use `tNode.parent` to determine * if `ancestor` is an ancestor of the current `node`.

(node: TNode, ancestor: TNode)

 * if `ancestor` is an ancestor of the current `node`.
 */
function isTNodeDescendant(node: TNode, ancestor: TNode): boolean {
  let curr: TNode | null = node;
  while (curr) {
    if (curr === ancestor) return true;
    curr = curr.parent;
  }
  return false;
}

/**
 * Checks if `lView` is a descendant of `parentTNode` in `parentLView` (crossing view boundaries).