Function setupHashSupport

app/utils/url-hash-polyfill.js:72–122

(router)

}

async function setupHashSupport(router) {
  let initialURL;
  let owner = getOwner(router);

  if (owner.lookup('service:prerender').isPrerendering) {
    return;
  }

  await new Promise((resolve) => {
    let interval = setInterval(() => {
      let { currentURL, currentRouteName } = router; /* Private API */

      if (currentURL && !isLoadingRoute(currentRouteName)) {
        clearInterval(interval);
        initialURL = currentURL;
        resolve(null);
      }
    }, 100);
  });

  if (isDestroyed(owner) || isDestroying(owner)) {
    return;
  }

  /**
   * This handles the initial Page Load, which is not imperceptible through
   * route{Did,Will}Change
   *
   */
  requestAnimationFrame(() => {
    eventuallyTryScrollingTo(owner, initialURL);
  });

  let routerService = owner.lookup('service:router');

  function handleHashIntent(transition) {
    let { url } = transition.intent || {};

    if (!url) {
      return;
    }

    eventuallyTryScrollingTo(owner, url);
  }

  routerService.on('routeDidChange', handleHashIntent);

  registerDestructor(router, () => {
    routerService.off('routeDidChange', handleHashIntent);
  });
}

const CACHE = new WeakMap();