1 files changed, 30 insertions, 0 deletions
diff --git a/railties/lib/rails/autoloaders.rb b/railties/lib/rails/autoloaders.rb
new file mode 100644
index 0000000000..4b71f90c6b
--- /dev/null
+++ b/railties/lib/rails/autoloaders.rb
@@ -0,0 +1,30 @@
+module Rails
+  module Autoloaders # :nodoc:
+    class << self
+      include Enumerable
+
+      def main
+        if zeitwerk_enabled?
+          @main ||= Zeitwerk::Loader.new.tap { |loader| loader.tag = "rails.main" }
+        end
+      end
+
+      def once
+        if zeitwerk_enabled?
+          @once ||= Zeitwerk::Loader.new.tap { |loader| loader.tag = "rails.once" }
+        end
+      end
+
+      def each
+        if zeitwerk_enabled?
+          yield main
+          yield once
+        end
+      end
+
+      def zeitwerk_enabled?
+        Rails.configuration.autoloader == :zeitwerk
+      end
+    end
+  end
+end