Fix inherited hook in helper

Author: javierav

CHANGELOG.md

@@ -1,3 +1,6 @@
+## Unreleased
+- Fix issue with inherited hook in helper ([#33](https://github.com/avo-hq/class_variants/pull/33))
+
 ## 1.1.0 (2025-01-20)
 - Add support for merging ([#23](https://github.com/avo-hq/class_variants/pull/23))
 - Add support for subclass inheritance in helper ([#24](https://github.com/avo-hq/class_variants/pull/24))

lib/class_variants/helper.rb

@@ -11,9 +11,12 @@ def class_variants(...)
     def self.included(base)
       base.extend(ClassMethods)
       base.singleton_class.instance_variable_set(:@_class_variants_instance, ClassVariants::Instance.new)
-      base.define_singleton_method(:inherited) do |subclass|
+
+      def base.inherited(subclass)
+        super if defined?(super)
+
         subclass.singleton_class.instance_variable_set(
-          :@_class_variants_instance, base.singleton_class.instance_variable_get(:@_class_variants_instance).dup
+          :@_class_variants_instance, singleton_class.instance_variable_get(:@_class_variants_instance).dup
         )
       end
     end