如何在ExpressJS内部异步传递http请求的结果？

app.get('/api/data', (req, res, next) => {
  asyncOperation((err, result) => {
    if (err) {
      next(err);
    } else {
      req.data = result;
      next();
    }
  });
});

app.get('/api/data', (req, res) => {
  res.json(req.data);
});

app.get('/api/data', async (req, res, next) => {
  try {
    const result = await asyncOperation();
    req.data = result;
    next();
  } catch (err) {
    next(err);
  }
});

app.get('/api/data', (req, res) => {
  res.json(req.data);
});

app.get('/api/data', async (req, res, next) => {
  try {
    const result = await asyncOperation();
    req.data = result;
    next();
  } catch (err) {
    next(err);
  }
});

app.get('/api/data', (req, res) => {
  res.json(req.data);
});