'use strict'; const fs = require('fs'); let devHost = 'm.yohoblk.com'; fs.readFile('.devhost', (err, buf)=> { if (!err) { devHost = JSON.parse(buf.toString()).host; } }); module.exports = () => { return (req, res, next) => { Object.assign(res.locals, { devHost: devHost }); next(); }; };