Example RESTful API on Express with Joi

example-express-joi.js

async function handler(req, res, next) {
  const userSchema = Joi.object().keys({
    name: Joi.string().required(),
    age: Joi.number().integer()
  });
  
  const params = req.params;
  const {error, validValues} = Joi.validate(params, userSchema);
  
  let result = null;
  if (!error)
    result = await db.User.create(validValues);
  
  return res.json(result);
}