FileUtils is needed

Author: ko1

lib/debug/console.rb

@@ -163,6 +163,7 @@ def history_file
         path = File.join(File.expand_path(state_dir), 'rdbg', 'history')
       end
 
+      require 'fileutils'
       FileUtils.mkdir_p(File.dirname(path)) unless File.exist?(path)
       path
     end

lib/debug/server.rb

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 require 'socket'
+require 'fileutils'
 require_relative 'config'
 require_relative 'version'
 

test/support/test_case.rb

@@ -7,6 +7,7 @@
 require 'timeout'
 require 'json'
 require 'rbconfig'
+require 'fileutils'
 require_relative '../../lib/debug/client'
 
 require_relative 'assertions'