mongoose required triggers error code example

Example 1: express unique validator for the owner

schmea.post('save', function(error, doc, next) {
  if (error.name === 'MongoError' && error.code === 11000) {
    next(new Error('email must be unique'));
  } else {
    next(error);
  }
});

Example 2: how to avoid model , isNew , error from mongoose query

const documents = await DocumentModel.find().select({name:1}).lean()
// Use .lean() method before ending the queryy --> Happy coding