You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: route.rb
    path of file: ./repos/serviceworker-rails/lib/serviceworker
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

modu
    
      def compiled_source(pattern)
        @wildcard_name = nil
        pattern_match = pattern.match(WILDCARD_PATTERN)
        if pattern_match
          @wildcard_name = if pattern_match[1].to_s.strip.empty?
            DEFAULT_WILDCARD_NAME
          else
            pattern_match[1].to_sym
          end