A teaspoon boot loader that works with browserify rails

teaspoon.rb

# config/initializers/teaspoon.rb

module Teaspoon
  module BootHelper
    def create_browserify_bundle(suite)
      bundle = File.join(Rails.root, 'tmp/javascripts', "suites/#{suite.name}.js")
      bundle_dir = File.dirname(bundle)
      FileUtils.mkdir_p(bundle_dir) unless File.directory?(bundle_dir)

      specs = suite.spec_assets(false).map { |asset| "#{asset.gsub(/\.js.*$/, '')}" }

      File.open(bundle, 'w') do |bundle_file|
        yield bundle_file if block_given?
        specs.each { |spec| bundle_file.puts "require('../../../spec/javascripts/#{spec}');" }
      end
    end
  end

  class Engine < ::Rails::Engine
    isolate_namespace Teaspoon
    config.to_prepare do
      Teaspoon::SuiteController.helper(BootHelper) if Rails.env.development? || Rails.env.test?
    end
  end
end

teaspoon_browserify.html.erb

<!-- fixtures/teaspoon/_browserify_boot.html.erb -->

<%  create_browserify_bundle(@suite)  %>
<%= javascript_include_tag "suites/#{@suite.name}" %>
<%= javascript_include_tag @suite.helper if @suite.helper %>

<script>
  Teaspoon.onWindowLoad(Teaspoon.execute);
</script>