Function getTNodeFromLView

packages/core/src/render3/di.ts:1044–1059

Gets the TNode associated with an LView inside of the declaration view.

(lView: LView)

/** Gets the TNode associated with an LView inside of the declaration view. */
function getTNodeFromLView(lView: LView): TElementNode | TElementContainerNode | null {
  const tView = lView[TVIEW];
  const tViewType = tView.type;

  // The parent pointer differs based on `TView.type`.
  if (tViewType === TViewType.Embedded) {
    ngDevMode && assertDefined(tView.declTNode, 'Embedded TNodes should have declaration parents.');
    return tView.declTNode as TElementContainerNode;
  } else if (tViewType === TViewType.Component) {
    // Components don't have `TView.declTNode` because each instance of component could be
    // inserted in different location, hence `TView.declTNode` is meaningless.
    return lView[T_HOST] as TElementNode;
  }

  return null;
}