Function appendSerializedNodePath

packages/core/src/hydration/annotate.ts:512–522

* Helper function to produce a node path (which navigation steps runtime logic * needs to take to locate a node) and stores it in the `NODES` section of the * current serialized view.

(
  ngh: SerializedView,
  tNode: TNode,
  lView: LView,
  excludedParentNodes: Set<number> | null,
)

 * current serialized view.
 */
function appendSerializedNodePath(
  ngh: SerializedView,
  tNode: TNode,
  lView: LView,
  excludedParentNodes: Set<number> | null,
) {
  const noOffsetIndex = tNode.index - HEADER_OFFSET;
  ngh[NODES] ??= {};
  // Ensure we don't calculate the path multiple times.
  ngh[NODES][noOffsetIndex] ??= calcPathForNode(tNode, lView, excludedParentNodes);
}

/**
 * Helper function to append information about a disconnected node.