Remove Zeitwerk (#633)

config/sus.rb

@@ -6,5 +6,3 @@
 Bundler.require :test
 
 require_relative "../fixtures/view_helper"
-
-Zeitwerk::Loader.eager_load_all

lib/phlex.rb

@@ -1,20 +1,28 @@
 # frozen_string_literal: true
 
 require "erb"
-require "zeitwerk"
 
 module Phlex
+	autoload :Context, "phlex/context"
+	autoload :DeferredRender, "phlex/deferred_render"
+	autoload :ElementClobberingGuard, "phlex/element_clobbering_guard"
+	autoload :Elements, "phlex/elements"
+	autoload :HTML, "phlex/html"
+	autoload :Helpers, "phlex/helpers"
+	autoload :SGML, "phlex/sgml"
+	autoload :SVG, "phlex/svg"
+	autoload :Unbuffered, "phlex/unbuffered"
+	autoload :ConcurrentMap, "phlex/concurrent_map"
+
 	# Included in all Phlex exceptions allowing you to match any Phlex error.
 	# @example Rescue any Phlex error:
 	#  rescue Phlex::Error
 	module Error; end
 
 	if defined?(ERB::Escape)
 		Escape = ERB::Escape
-	elsif defined?(ERB::Util)
-		Escape = ERB::Util
 	else
-		Escape = BasicEscape
+		Escape = ERB::Util
 	end
 
 	# A specialised ArgumentError for Phlex.
@@ -27,17 +35,14 @@ class NameError < ::NameError
 		include Error
 	end
 
-	# @api private
-	Loader = Zeitwerk::Loader.for_gem(warn_on_extra_files: false).tap do |loader|
-		loader.inflector.inflect(
-			"html" => "HTML",
-				"svg" => "SVG",
-				"sgml" => "SGML"
-		)
-		loader.ignore("#{__dir__}/phlex/testing")
-		loader.setup
-	end
-
 	# @api private
 	ATTRIBUTE_CACHE = Phlex::ConcurrentMap.new
 end
+
+if Gem::Version.new(RUBY_VERSION) < Gem::Version.new("3.0")
+	class Symbol
+		def name
+			to_s
+		end
+	end
+end

lib/phlex/elements.rb

@@ -1,9 +1,5 @@
 # frozen_string_literal: true
 
-if Gem::Version.new(RUBY_VERSION) < Gem::Version.new("3.0")
-	using Phlex::Overrides::Symbol::Name
-end
-
 # Extending this module provides the {register_element} macro for registering your own custom elements. It's already extended by {HTML} and {SVG}.
 # @example
 # 	module MyCustomElements

lib/phlex/helpers.rb

@@ -1,9 +1,5 @@
 # frozen_string_literal: true
 
-if Gem::Version.new(RUBY_VERSION) < Gem::Version.new("3.0")
-	using Phlex::Overrides::Symbol::Name
-end
-
 module Phlex::Helpers
 	private
 

lib/phlex/html.rb

@@ -3,6 +3,9 @@
 module Phlex
 	# @abstract Subclass and define {#template} to create an HTML component class.
 	class HTML < SGML
+		autoload :StandardElements, "phlex/html/standard_elements"
+		autoload :VoidElements, "phlex/html/void_elements"
+
 		# A list of HTML attributes that have the potential to execute unsafe JavaScript.
 		EVENT_ATTRIBUTES = %w[onabort onafterprint onbeforeprint onbeforeunload onblur oncanplay oncanplaythrough onchange onclick oncontextmenu oncopy oncuechange oncut ondblclick ondrag ondragend ondragenter ondragleave ondragover ondragstart ondrop ondurationchange onemptied onended onerror onfocus onhashchange oninput oninvalid onkeydown onkeypress onkeyup onload onloadeddata onloadedmetadata onloadstart onmessage onmousedown onmousemove onmouseout onmouseover onmouseup onmousewheel onoffline ononline onpagehide onpageshow onpaste onpause onplay onplaying onpopstate onprogress onratechange onreset onresize onscroll onsearch onseeked onseeking onselect onstalled onstorage onsubmit onsuspend ontimeupdate ontoggle onunload onvolumechange onwaiting onwheel].to_h { [_1, true] }.freeze
 

lib/phlex/sgml.rb

@@ -1,9 +1,5 @@
 # frozen_string_literal: true
 
-if Gem::Version.new(RUBY_VERSION) < Gem::Version.new("3.0")
-	using Phlex::Overrides::Symbol::Name
-end
-
 module Phlex
 	# **Standard Generalized Markup Language** for behaviour common to {HTML} and {SVG}.
 	class SGML

lib/phlex/svg.rb

@@ -2,6 +2,8 @@
 
 module Phlex
 	class SVG < SGML
+		autoload :StandardElements, "phlex/svg/standard_elements"
+
 		include StandardElements
 
 		# This should be extended after all method definitions

phlex.gemspec

@@ -28,7 +28,5 @@ Gem::Specification.new do |spec|
 	end
 	spec.require_paths = ["lib"]
 
-	spec.add_dependency "zeitwerk", "~> 2.6"
-
 	spec.metadata["rubygems_mfa_required"] = "true"
 end