Function getLNodeForHydration

packages/core/src/hydration/utils.ts:231–247

(viewRef: ViewRef)

 *  - `null` in case of an embedded view
 */
export function getLNodeForHydration(viewRef: ViewRef): LView | LContainer | null {
  // Reading an internal field from `ViewRef` instance.
  let lView = (viewRef as any)._lView as LView;
  const tView = lView[TVIEW];
  // A registered ViewRef might represent an instance of an
  // embedded view, in which case we do not need to annotate it.
  if (tView.type === TViewType.Embedded) {
    return null;
  }
  // Check if it's a root view and if so, retrieve component's
  // LView from the first slot after the header.
  if (isRootView(lView)) {
    lView = lView[HEADER_OFFSET];
  }

  return lView;
}

function getTextNodeContent(node: Node): string | undefined {
  return node.textContent?.replace(/\s/gm, '');