# File lib/merb-assets/assets_mixin.rb, line 361
    def include_required_js(options = {})
      return '' if @required_js.nil? || @required_js.empty?
      @required_js.map do |req_js|
        if req_js.last.is_a?(Hash)
          js_include_tag(*(req_js[0..-2] + [options.merge(req_js.last)]))
        else
          js_include_tag(*(req_js + [options]))
        end
      end.join
    end