Contact list /contacts POST request

server.js

app.post("/contacts", function(req, res) {
  var newDoc = req.body;
  newDoc.createDate = new Date();

  if (req.body.firstName === undefined || req.body.lastName === undefined) {
    handleError(null, res, "Must provide a contact name.");
  }

  if (req.body.email === undefined) {
    handleError(null, res, "Must provide an email.");
  }

  db.collection("contacts").insertOne(newDoc, function(err, doc) {
    if (err) {
      handleError(err, res, "Failed to create new contact.");
    } else {
      res.status(201).json(doc.ops[0]);
    }
  });
});