Hacky loader that waits until initial Redux store changes settle down

index.js

const unsubscribeLoader = store.subscribe(() => {
  if (selectors.loaderDelayExpired(store.getState())) {
    // State settled down long enough for timer to expire - stop listening.
    unsubscribeLoader();
  } else {
    // Reset the timer again.
    startLoaderDelay();
  }
});

// Utility to (re)start up a timer to dismiss the loading indicator
let loaderTimer = null;
function startLoaderDelay() {
  if (loaderTimer) {
    clearTimeout(loaderTimer);
  }
  loaderTimer = setTimeout(
    () => store.dispatch(actions.ui.setLoaderDelayExpired(true)),
    LOADER_DELAY_PERIOD
  );
}