# frozen_string_literal: true

# Helps build a list of conditional class names
module Ariadne
  # :nodoc:
  module ClassNameHelper
    def merge_class_names(*args)
      [].tap do |classes|
        args.each do |class_name|
          next if class_name.blank?

          case class_name
          when String
            classes << class_name
          else
            raise ArgumentError, "Expected String class name, got #{class_name.class}"
          end
        end
      end.join(" ")
    end
  end
end