handler-concurrent-task-queue.js

function* handler({ uri, index, segmentsCount }) {
  // get the data
  const res = yield call(fetch, uri);
  const blob = yield res.blob();
  
  // report to the store
  yield put({ type: "CHUNK_DONE", payload: { index, blob } })
  
  // check if all the chunk are ready
  const currentChunkCount = yield select(currentChunkCountSelector)
  if (currentChunkCout === segmentsCount) {
    yield allDoneChannel.put({ type: "DONE" });
  }
};