asciidoc.rb in asciidoctor-doctest-2.0.0.beta.4

- old
+ new

@@ -1,4 +1,5 @@
+# frozen_string_literal: false
 require 'asciidoctor/doctest/io/base'
 require 'corefines'
 
 using Corefines::Enumerable::map_send
 using Corefines::Object[:blank?, :presence]