class Middleman::Rack::MinifyJavascript

def call(env)
  status, headers, response = @app.call(env)
  if env["PATH_INFO"].match(/\.js$/)
    compressor = ::YUI::JavaScriptCompressor.new(:munge => true)

    uncompressed_source = response.is_a?(::Rack::File) ? File.read(response.path) : response
    response = compressor.compress(uncompressed_source)
    headers["Content-Length"] = ::Rack::Utils.bytesize(response).to_s
  end
  [status, headers, response]
end

def initialize(app, options={})
  @app = app
end