python_correction.rb

module DidYouMean
  class MethodNameChecker
    prepend Module.new {
      PY2RB = {
        String => {
          lower: %i(downcase)
        },
        Object => {
          len: %i(obj.length)
        }
      }

      def corrections
        PY2RB.dig(receiver.class, method_name) || super
      end
    }
  end
end