javascript - How can I check MongoDB count so skip can be conditionally implemented?

Question

I want to be able to compare the incoming skip value from the query parameters so that it is not greater than the total count of items in the database.

This is the code that works without the check (so it fails when skip is greater than the total):

await products
    .aggregate([
      {
        $facet: {
          paginatedResults: [
            { $match: {} },
            { $sort: sortby },
            { $skip: parseInt(req.query.skip) },
            { $limit: limit },
          ],
          totalCount: [
            {
              $count: "count",
            },
          ],
        },
      },
    ])
    .then((data) => {
      res.json(data);
    })
    .catch((error) => {
      console.log(error);
    });

Answer 1

等待大神答复