proxy.js

const http = require('http')
const httpProxy = require('http-proxy')

const PORT = 3005
const TARGET = 'http://example.com:80'
const USER = ''
const PASSWORD = ''

const options = {
  auth: `${USER}:${PASSWORD}`,
  target: TARGET
}

const proxy = httpProxy.createProxyServer(options)

const proxyServer = http.createServer(function (req, res) {
  proxy.web(req, res)
})

proxyServer.listen(PORT, () => console.log(`Server up at http://localhost:${PORT}`))