Add frozen_literal_magic comment in all files

Gemfile

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 gemspec

Rakefile

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rake/testtask'
 
 task :default => :test

lib/zeitwerk/autoloads.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Zeitwerk
   # @private
   class Autoloads

lib/zeitwerk/error.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Zeitwerk
   class Error < StandardError
   end

lib/zeitwerk/explicit_namespace.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Zeitwerk
   # Centralizes the logic for the trace point used to detect the creation of
   # explicit namespaces, needed to descend into matching subdirectories right

lib/zeitwerk/loader/callbacks.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Zeitwerk::Loader::Callbacks
   include Zeitwerk::RealModName
 

lib/zeitwerk/loader/config.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "set"
 require "securerandom"
 

lib/zeitwerk/loader/helpers.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Zeitwerk::Loader::Helpers
   private
 

lib/zeitwerk/real_mod_name.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Zeitwerk::RealModName
   UNBOUND_METHOD_MODULE_NAME = Module.instance_method(:name)
   private_constant :UNBOUND_METHOD_MODULE_NAME

test/lib/test_gem_inflector.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestGemInflector < LoaderTest

test/lib/test_inflector.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestInflector < Minitest::Test

test/lib/test_real_mod_name.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestRealModName < Minitest::Test

test/lib/zeitwerk/test_all_dirs.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestAllDirs < LoaderTest

test/lib/zeitwerk/test_ancestors.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 # The following properties are not supported by the classic Rails autoloader.

test/lib/zeitwerk/test_autoloads.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestAutoloads < Minitest::Test

test/lib/zeitwerk/test_autovivification.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestAutovivification < LoaderTest

test/lib/zeitwerk/test_callbacks.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestCallbacks < LoaderTest

test/lib/zeitwerk/test_collapse.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 require "set"
 

test/lib/zeitwerk/test_conflicting_directory.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestConflictingDirectory < LoaderTest

test/lib/zeitwerk/test_eager_load.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 require "fileutils"
 

test/lib/zeitwerk/test_exceptions.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestExceptions < LoaderTest

test/lib/zeitwerk/test_explicit_namespace.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestExplicitNamespace < LoaderTest

test/lib/zeitwerk/test_for_gem.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestForGem < LoaderTest

test/lib/zeitwerk/test_ignore.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 require "set"
 

test/lib/zeitwerk/test_logging.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestLogging < LoaderTest

test/lib/zeitwerk/test_marshal.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestMarshal < LoaderTest

test/lib/zeitwerk/test_multiple.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestMultiple < LoaderTest

test/lib/zeitwerk/test_nested_root_directories.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestNestedRootDirectories < LoaderTest

test/lib/zeitwerk/test_push_dir.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 require "pathname"
 

test/lib/zeitwerk/test_reloading.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 require "fileutils"
 

test/lib/zeitwerk/test_require_interaction.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 require "pathname"
 

test/lib/zeitwerk/test_ruby_compatibility.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 require "pathname"
 

test/lib/zeitwerk/test_shadowed.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestShadowed < LoaderTest

test/lib/zeitwerk/test_sti_old_school_workaround.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 # Rails applications are expected to preload STIs. Using requires is the old

test/lib/zeitwerk/test_top_level.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestTopLevel < LoaderTest

test/lib/zeitwerk/test_unload.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestUnload < LoaderTest

test/lib/zeitwerk/test_unloadable_cpath.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 require "set"
 

test/lib/zeitwerk/test_unregister.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "test_helper"
 
 class TestUnregister < LoaderTest

test/support/delete_loaded_feature.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DeleteLoadedFeature
   def delete_loaded_feature(path)
     $LOADED_FEATURES.delete_if do |abspath|

test/support/loader_test.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class LoaderTest < Minitest::Test
   TMP_DIR = File.expand_path("../tmp", __dir__)
 

test/support/on_teardown.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module OnTeardown
   def on_teardown
     define_singleton_method(:teardown) do

test/support/remove_const.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module RemoveConst
   def remove_const(cname, from: Object)
     from.send(:remove_const, cname)

test/support/test_macro.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module TestMacro
   def test(description, &block)
     method_name = "test_#{description}".gsub(/\W/, "_")

test/test_helper.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "minitest/autorun"
 require "minitest/focus"
 

zeitwerk.gemspec

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative "lib/zeitwerk/version"
 
 Gem::Specification.new do |spec|