I’ve updated my Angular app to 18 version. I’m behind a corporate proxy, with my proxy file looking like this:

let proxyConfig = {
  '/test/**': {
    target: 'https://myUrl/test',
    secure: true,
    changeOrigin: true,
    logLevel: 'debug',
    pathRewrite: { '^/test': '' },
  }

function setupForCorporateProxy(proxyConfig) {
  const proxyServer = process.env.http_proxy || process.env.HTTP_PROXY;
  if (proxyServer) {
    const agent = new HttpsProxyAgent(proxyServer);
    Object.keys(proxyConfig).forEach(function (key) {
      proxyConfig[key].agent = agent;
    });
  }
  return proxyConfig;
}

module.exports = setupForCorporateProxy(proxyConfig);

After the update, every request is failing on localhost. Still, for the GET request I found a solution by adding two ** instead of one * in the proxy configuration. Anyway, any POST/PUT/DELETE request is breaking the app with this error:

    at onSocketNT (node:_http_client:902:5)
    at process.processTicksAndRejections (node:internal/process/task_queues:83:21) {
  code: 'ERR_HTTP_HEADERS_SENT'
Node.js v20.15.0

What could be the issue? Seems very strange, because the update was fine, but it broke the proxy config.