Step 11

To delete a user given their ID, you can use findByIdAndDelete:

User.findByIdAndDelete("5f9a1d156e848f06c458f5f4")
  .then((user) => console.log(user))
  .catch((err) => console.log(err));

Before you run the above example, you must provide another "option" parameter to the connect method:

const option = {
  useNewUrlParser: true,
  useUnifiedTopology: true,
+  useFindAndModify: false
};

Once you removed the user, try to find it using findById method; it must return null to you, indicating there is no user with the given ID.