puppeteer-har package does not record third party cookies.

[simonft]

From Surya:
Solution:

// Returns map of request ID to raw CDP request data. This will be populated as requests are made.
// See: https://itecnote.com/tecnote/missing-request-headers-in-puppeteer/
async function setupLoggingOfAllNetworkData(page) {
  const cdpSession = await page.target().createCDPSession();
  await cdpSession.send("Network.enable");
  const cdpRequestDataRaw = {};
  const addCDPRequestDataListener = (eventName) => {
    cdpSession.on(eventName, (request) => {
      cdpRequestDataRaw[request.requestId] =
        cdpRequestDataRaw[request.requestId] || {};
      Object.assign(cdpRequestDataRaw[request.requestId], {
        [eventName]: request,
      });
    });
  };
  addCDPRequestDataListener("Network.requestWillBeSent");
  addCDPRequestDataListener("Network.requestWillBeSentExtraInfo");
  addCDPRequestDataListener("Network.responseReceived");
  addCDPRequestDataListener("Network.responseReceivedExtraInfo");
  return cdpRequestDataRaw;
}

and then const cdpRequestDataRaw = await setupLoggingOfAllNetworkData(page);
and then you can merge them back into the har file from the package
the request ids match