From 9b5401fcc9624be9bd60331d59169267ae2f7bac Mon Sep 17 00:00:00 2001
From: Xavier Noria <fxn@hashref.com>
Date: Tue, 9 Apr 2019 11:06:44 +0200
Subject: depend on Zeitwerk 2.1.0

---
 .../lib/active_support/dependencies/zeitwerk_integration.rb | 13 ++-----------
 activesupport/lib/active_support/descendants_tracker.rb     | 11 +++++++++--
 2 files changed, 11 insertions(+), 13 deletions(-)

(limited to 'activesupport/lib/active_support')

diff --git a/activesupport/lib/active_support/dependencies/zeitwerk_integration.rb b/activesupport/lib/active_support/dependencies/zeitwerk_integration.rb
index faf9edef27..b0f7a3f9cc 100644
--- a/activesupport/lib/active_support/dependencies/zeitwerk_integration.rb
+++ b/activesupport/lib/active_support/dependencies/zeitwerk_integration.rb
@@ -21,17 +21,8 @@ module ActiveSupport
           ActiveSupport::Inflector.safe_constantize(cpath)
         end
 
-        def autoloaded_constants
-          cpaths = []
-          Rails.autoloaders.each do |autoloader|
-            cpaths.concat(autoloader.loaded_cpaths.to_a)
-          end
-          cpaths
-        end
-
-        def autoloaded?(object)
-          cpath = object.is_a?(Module) ? object.name : object.to_s
-          Rails.autoloaders.any? { |autoloader| autoloader.loaded?(cpath) }
+        def to_unload?(cpath)
+          Rails.autoloaders.main.to_unload?(cpath)
         end
 
         def verbose=(verbose)
diff --git a/activesupport/lib/active_support/descendants_tracker.rb b/activesupport/lib/active_support/descendants_tracker.rb
index 2dca990712..fe0c6991aa 100644
--- a/activesupport/lib/active_support/descendants_tracker.rb
+++ b/activesupport/lib/active_support/descendants_tracker.rb
@@ -22,11 +22,18 @@ module ActiveSupport
 
       def clear
         if defined? ActiveSupport::Dependencies
+          # to_unload? is only defined in Zeitwerk mode.
+          to_unload = if Dependencies.respond_to?(:to_unload?)
+            ->(klass) { Dependencies.to_unload?(klass.name) }
+          else
+            ->(klass) { Dependencies.autoloaded?(klass) }
+          end
+
           @@direct_descendants.each do |klass, descendants|
-            if ActiveSupport::Dependencies.autoloaded?(klass)
+            if to_unload[klass]
               @@direct_descendants.delete(klass)
             else
-              descendants.reject! { |v| ActiveSupport::Dependencies.autoloaded?(v) }
+              descendants.reject! { |v| to_unload[v] }
             end
           end
         else
-- 
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