module Middleman::PreviewServer

def new_app
  opts = @options
  server = ::Middleman::Application.server
  # Add in the meta pages application
  meta_app = Middleman::MetaPages::Application.new(server)
  server.map '/__middleman' do
    run meta_app
  end
  @app = server.inst do
    if opts[:environment]
      config[:environment] = opts[:environment].to_sym
    end
    logger(opts[:debug] ? 0 : 1, opts[:instrumenting] || false)
  end
end