Function readNavState

core/src/components/router/utils/dom.ts:66–83

(root: HTMLElement | undefined)

 * The function returns a list of RouteID corresponding to each of the outlet and the last outlet without a RouteID.
 */
export const readNavState = async (root: HTMLElement | undefined) => {
  const ids: RouteID[] = [];
  let outlet: NavOutletElement | undefined;
  let node: HTMLElement | undefined = root;

  // eslint-disable-next-line no-cond-assign
  while ((outlet = searchNavNode(node))) {
    const id = await outlet.getRouteId();
    if (id) {
      node = id.element;
      id.element = undefined;
      ids.push(id);
    } else {
      break;
    }
  }
  return { ids, outlet };
};

/** Max animation frames `scrollToFragment` polls while waiting for the target to mount. */
const FRAGMENT_POLL_FRAMES = 30;