Babel

file.js

import {Router} from 'express';
import {wrap} from '../../utils';

const router = Router();

async function getAllChampagnes(req, res) {
  const champagnes = await req.db.models.Champagne
    .find()
    .exec();

  res.send(champagnes);
}

router.get('/champagnes', wrap(getAllChampagnes));

export default router;

usage

babel file.js --stage 1

// PS. I have 20 similar handlers and they do not fail.

wrap.js

export function wrap(fn) {
  return (...args) => fn(...args).catch(args[2]);
}