module Sidekiq::Rescue::DSL::ClassMethods

def validate_error_argument(error)
  error_arg_valid = if error.is_a?(Array)
                      error.all? { |e| e < StandardError }
                    else
                      error < StandardError
                    end
  return if error_arg_valid
  raise ArgumentError,
        "error must be an ancestor of StandardError or an array of ancestors of StandardError"
end