Youtube in React: fetching channel information in WATCH_DETAILS worker saga

watch.js

export function* fetchWatchDetails(videoId, channelId) {
  let requests = [
    buildVideoDetailRequest.bind(null, videoId),
    buildRelatedVideosRequest.bind(null, videoId),
  ];

  if (channelId) {
    requests.push(buildChannelRequest.bind(null, channelId));
  }
  /* ... /*
}