Function setTNodeInsertBeforeIndex

packages/core/src/render3/i18n/i18n_util.ts:102–115

(tNode: TNode, index: number)

 * See `TNode.insertBeforeIndex`
 */
export function setTNodeInsertBeforeIndex(tNode: TNode, index: number) {
  ngDevMode && assertTNode(tNode);
  let insertBeforeIndex = tNode.insertBeforeIndex;
  if (insertBeforeIndex === null) {
    setI18nHandling(getInsertInFrontOfRNodeWithI18n, processI18nInsertBefore);
    insertBeforeIndex = tNode.insertBeforeIndex = [
      null! /* may be updated to number later */,
      index,
    ];
  } else {
    assertEqual(Array.isArray(insertBeforeIndex), true, 'Expecting array here');
    (insertBeforeIndex as number[]).push(index);
  }
}

/**
 * Create `TNode.type=TNodeType.Placeholder` node.