A local HTTPS proxy. Prereq: `npm install http-proxy`; `openssl req -new -x509 -keyout key.pem -out cert.pem -days 365 -nodes`

proxy.js

var fs = require('fs'),
    http = require('http'),
    https = require('https'),
    httpProxy = require('http-proxy');

var options = {
  https: {
    key: fs.readFileSync('key.pem', 'utf8'),
    cert: fs.readFileSync('cert.pem', 'utf8')
  }
};

//
// Create a standalone HTTPS proxy server
//
httpProxy.createServer(3000, 'example.com', options).listen(8001);