Use in Express middleware

[FeelHippo]

Hi there,

first off, thank you for this package, it's come in handy several times and always does a great job.
Documentation, however, could be expanded, and I have a question regarding its use in an ExpressJs middleware.

I would like to use "blocked" to investigate the cause of some timeouts we are experiencing in a controller.

I was wondering if I could do something like:

• create a middleware like:

import { Request, Response, NextFunction } from 'express';
import * as blocked from 'blocked-at';

export default (_req: Request, _res: Response, next: NextFunction): void => {
  blocked(
    (time: any, stack: any) => {
      console.log(`Blocked for ${time}ms, operation started here:`, { stack });
    },
    { threshold: 1000 },
  );
  next();
};

• and append this to our route handler

import { Router } from 'express';
import * as RestController from '.';
import ApiKeyAuth from '../../authorization/api-key-auth';
import blocked from '../../middleware/blocked';

router.post('/users', ApiKeyAuth, blocked, RestController.createUser);

I am testing this out with jMeter right now, and I have contrasting feelings on the effectiveness, what are your thoughts on this?