Function getDirectivesAtNodeIndex

packages/core/src/render3/context_discovery.ts:319–330

(nodeIndex: number, lView: LView)

 * @param lView The target view data
 */
export function getDirectivesAtNodeIndex(nodeIndex: number, lView: LView): any[] | null {
  const tNode = lView[TVIEW].data[nodeIndex] as TNode;
  if (tNode.directiveStart === 0) return EMPTY_ARRAY;
  const results: any[] = [];
  for (let i = tNode.directiveStart; i < tNode.directiveEnd; i++) {
    const directiveInstance = lView[i];
    if (!isComponentInstance(directiveInstance)) {
      results.push(directiveInstance);
    }
  }
  return results;
}

export function getComponentAtNodeIndex(nodeIndex: number, lView: LView): {} | null {
  const tNode = lView[TVIEW].data[nodeIndex] as TNode;