A helper function that lets you declare multiple methods for the same endpoint in express.js without repeating things

route_methods.js

const routeMethods = (router, url) => {
  const unwrap = () => router
  const makeRoute = method => handler => {
    router[method](url, handler);
    return routeMethods(router, url)
  }
  const methods = ['get', 'post', 'put', 'options', 'delete', 'patch', /* as many methods as you need here */]
  return methods.reduce((all, method) => ({
    ...all,
    [method]: makeRoute(method)
  }), { unwrap })
}

export const dabRouter = routeMethods(new Router(), "/dab/:id")
  .get((req, res) => res.json({ yeet: 1 }))
  .put((req, res) => res.send(`${req.params.id}, you put 1 dab`))
  .post(() => {})
  .unwrap()
// you have to call `unwrap` at the end if you want to return the modified router object