express context based on async_hooks without getting lost
npm install express-ctx!npm !Travis (.org) 
express context based on async_hooks without getting lost context
``sh`
npm i express-ctx
`js
const express = require('express');
const { middleware, setValue, getValue } = require('express-ctx');
const usersRepository = require('./usersRepository'); // some your services
const app = express();
app.use(middleware); // must be set before using setValue/getValue
app.use((req, res, next) => {
usersRepository.findOne(req.session.id).then(user => {
setValue('user', user);
next();
});
});
app.use((req, res, next) => {
const user = getValue('user');
res.json(user);
});
`
As for now such libraries as express-http-context and express-cls-hooked do not bind req and res` to namespace, so there could be troubles with middlewares based on emitting events. So this lib binds.