simple-proxy.js

const express = require('express');
const request = require('request');

const {
  PROXIED_HOST: proxiedHost = 'https://tomekf.pl',
  PROXY_PORT: proxyPort = 1337,
  LOCAL_PORT: localPort = 8000,
  LOCAL_HOST: localHost = 'http://localhost',
} = process.env;

console.log(`proxy for ${proxiedHost} running on http://localhost:${proxyPort}`);

express()
  .use(function (req, res, next) {
    res.header("Access-Control-Allow-Origin", `${localHost}:${localPort}`);
    res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
    res.header("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS");
    next();
  })
  .use('/', (req, res) => {
    req.pipe(request(`${proxiedHost}${req.url}`)).pipe(res);
  })

  .listen(proxyPort);