For nested components

view_component_helper.rb

module ViewComponentHelper
  def component(name, context: nil, **args, &block)
    cache_keys = Array(args.delete(:cache))

    cache_if cache_keys.present?, cache_keys do
      return render_component_in(context, name, **args, &block) if context

      return render component_class_for(name).new(args), &block
    end
  end

  def render_component_in(context, name, **args, &block)
    component_class_for(name).new(args).render_in(context, &block)
  end

  private

  def component_class_for(path)
    file_name = "#{path}/component"
    namespace = namespace(file_name).camelize
    return (namespace + "::" + "Component").constantize unless namespace == 'components'

    component_name.constantize
  end

  def namespace(file_name)
    file_path = component_path(file_name)
    Pathname.new(File.dirname(file_path)).relative_path_from(Rails.root.join("app/components")).to_s
  end

  def component_path(file_name)
    Dir.glob(File.join(Rails.root, 'app', 'components', '**', file_name + ".rb")).first
  end
end

# Example

# <%= component "namespace1/namespace2" %>