lib/jan/validator.rb in jan-0.0.3 vs lib/jan/validator.rb in jan-0.0.4

@@ -1,8 +1,8 @@
 require "jan/parser"
 require "jan/check_digit_calculator"
 
-class Jan
+class Jan < ::String
   module Validator
     module_function
 
     def validate(code)
       validate_size(code.to_s) && validate_check_digit(code.to_s)