class ActiveSupport::Dependencies::WatchStack

def watch_namespaces(namespaces)
  @watching << namespaces.map do |namespace|
    module_name = Dependencies.to_constant_name(namespace)
    original_constants = Dependencies.qualified_const_defined?(module_name) ?
      Inflector.constantize(module_name).constants(false) : []
    @stack[module_name] << original_constants
    module_name
  end
end