const findUser = (name, res) => {
  const escapedName = new RegExp(`${name}`, "i");
  User.find({ name: escapedName }, (err, user) => {
    if (err) res.send(err);
    res.send(user[0].name);
  });
};

app.get("/", (req, res) => res.send("home"));
app.get("/:name", (req, res) => {
  findUser(req.params.name, res);
});