User with Refined types

userWithRefinedTypes.scala

object User {
  sealed abstract case class User private (id: Id, name: Name)
  object User {
    def build(id: Int, name: String): Either[AppError, User] =
      for {
        refinedId   <- toRefinedId(id)
        refinedName <- toRefinedName(name)
      } yield new User(refinedId, refinedName) {}
  }
  // previous GIST with refined type stuff
}