Function findKeyForRoute

packages/@react-spectrum/s2/src/SideNav.tsx:712–719

(collection: Collection<Node<unknown>>, route: string)

// The collection key of the item whose href matches `route`, or null. getKeys() covers collapsed
// items too, and the href is stored as a data attribute so it doesn't trigger Tree's link handling.
function findKeyForRoute(collection: Collection<Node<unknown>>, route: string): Key | null {
  for (let key of collection.getKeys()) {
    if (collection.getItem(key)?.props?.href === route) {
      return key;
    }
  }
  return null;
}

// Walks up from `key` to the closest ancestor that is actually rendered (i.e. all of its ancestors
// are expanded). Returns `key` unchanged when it is already visible. A collapsed ancestor hides