Youtube in React: video details for watch component

watch.js

function* fetchVideoDetails(responses) {
  const searchListResponse = responses.find(response => response.result.kind === SEARCH_LIST_RESPONSE);
  const relatedVideoIds =  searchListResponse.result.items.map(relatedVideo => relatedVideo.id.videoId);

  const requests = relatedVideoIds.map(relatedVideoId => {
    return buildVideoDetailRequest.bind(null, relatedVideoId);
  });

  try {
    const responses = yield all(requests.map(fn => call(fn)));
    yield put(watchActions.videoDetails.success(responses));
  } catch (error) {
    yield put(watchActions.videoDetails.failure(error));
  }
}