how to make wrapper for (nested) router?

[dimonnwc3]

i want to wrap nested router:

let router = new Router({prefix: 'users'});
router = router
  .get('/', userCtrl.getUsers)
  .post('/', userCtrl.post)
  .get('/:id', userCtrl.get)
  .patch('/:id', userCtrl.patch)
  .delete('/:id',  userCtrl.del)
  .routes();

function* wrapper(next) {
   console.log('enter');
    //my wrapper code
    try {
      console.log('run');
      yield* router.call(this, next);
    } finally {
      console.log('exit');
    }
}

let mainRouter = new Router();
mainRouter.use(wrapper);

But this does not work.

I get to debug:

  koa-router defined route HEAD,GET /users/ +41ms
  koa-router defined route POST /users/ +1ms
  koa-router defined route HEAD,GET /users/:id +0ms
  koa-router defined route PATCH /users/:id +1ms
  koa-router defined route DELETE /users/:id +0ms
  koa-router defined route  (.*) +0ms

and then when request

  koa-router GET /users +3s
  koa-router test (.*) /^(.*)(?:\/(?=$))?(?=\/|$)/i +0ms
  koa-router test (.*) /^(.*)(?:\/(?=$))?(?=\/|$)/i +0ms
  --> GET /users 404 50ms 1.31kb

I have also tried: dispatch.router = router.router;
And it's worked, but without my wrapper.

This is a simplified example, in my application, I do a lot of routers and do one wrapper for each, with different parameters inside.

[smcmurray]

I think this may be related to my comment on issue #257

[YanLobat]

Is it still an issue? @dimonnwc3