bar vs foo

bar.js

function* watchTokenExpire() {
  let action = yield take(UPDATE_TOKEN_EXPIRE);
   while (true) {
    if (action.payload.shouldRefresh) {
      yield fetchNewTokenOrLogout();
    } else {
      const expireInMs = (action.payload.expireIn * 1000) - MIN_TOKEN_LIFESPAN;
       const raceResult = yield race({
        action: take(UPDATE_TOKEN_EXPIRE),
        timeout: delay(expireInMs),
      });
       if (raceResult.timeout) {
        yield fetchNewTokenOrLogout();
      } else {
        ({ action } = raceResult);
      }
    }
  }
}

foo.js

function* watchTokenExpire() {
  const expireInMs = Number.MAX_SAFE_INTEGER;
   while (true) {
    const raceResult = yield race({
      action: take(UPDATE_TOKEN_EXPIRE),
      timeout: delay(expireInMs),
    });

    if (raceResult.action.payload.expireIn) {
      expireInMs = (raceResult.action.payload.expireIn * 1000) - MIN_TOKEN_LIFESPAN;
    }

    if (raceResult.action.payload.shouldRefresh || raceResult.timeout) {
        yield fetchNewTokenOrLogout()
    }
  }
}