configure express routes through decorators

index.js

function factory(app) {
  return ({url, method = 'get'}) => (target, key, descriptor) => {
    app[method](url, target[key]);
  }
}

const Path = factory(app);


class Controller {
  
  @Path({url: '/ping'})
  ping(req, res) {
    res.send('Ping!')
  }
  
}