function print (path, layer) {
    if (layer.route) {
      layer.route.stack.forEach(print.bind(null, path.concat(split(layer.route.path))))
    } else if (layer.name === 'router' && layer.handle.stack) {
      layer.handle.stack.forEach(print.bind(null, path.concat(split(layer.regexp))))
    } else if (layer.method) {
      console.log('%s /%s',
        layer.method.toUpperCase(),
        path.concat(split(layer.regexp)).filter(Boolean).join('/'))
    }
  }