text: 'use strict'
  
  module.exports = (req, res, next) => {
    res.setHeader('Cache-Control', 'private, no-cache, no-store, must-revalidate')
    res.setHeader('Pragma', 'no-cache')
    res.setHeader('Expires', '-1')
    res.setHeader('If-Modified-Since', '0')
  
    next()
  }
  