Module type Params.ErrorSource

Conventional module type to define the errors inside a project. This is how Sugar understands the error handling layer of a project.

Like:

  module MyError = struct
    type error = Not_found | Invalid_arg of string
  end

This module might be used to create blocking or asynchronous error handling layers, using the Sugar functors, like:

  module MyResult = Sugar.Result.Make (MyError)

  module MyResult2 = Sugar.Promise.Make (Lwt) (MyError)
  module MyResult2 = MyResult.For (Lwt)