sprockets-builder-processor.rb

require 'opal'

Opal::BuilderProcessors.class_eval do
  class SprocketsProcessor < self::JsProcessor
    def self.match?(*)
      true
    end
    
    def source
      compiled.to_s + mark_as_required(@filename)
    end
    
    def requires
      compiled.send(:required_assets).map(&:logical_path)
    end
    
    
    private
    
    def compiled
      @compiled ||= Rails.application.assets[@filename]
    end
  end
end