find a way to record events from speculationrules #4

chrmod · 2024-10-01T14:41:57Z

this scenarior should work, but it does not, as something disables preprendering

import http from 'node:http';

// Works in Chrome only
// Be sure to start Chrome with Preference "net.network_prediction_options" set to 3
export default async function (browser) {
  let server;
  try {
    server = http.createServer(function (_, res) {
      res.write(`
        <html>
        <head>
        <script type="speculationrules">
          {
            "prerender": [
              {
                "urls": ["next.html"],
                "eagerness": "immediate"
              }
            ]
          }
        </script>
        </head>
        <body>
        <h1>0008-speculationrules</h1>
        <a href="/next.html">prerender</a>
        </body>
        </html>
      `);
      res.end();
    }).listen(8080, ()=> {});

    const puppeteerBrowser = await browser.getPuppeteer()
    await browser.call(async () => {
      const [page] = await puppeteerBrowser.pages();
      const client = await page.target().createCDPSession();
      await client.send('Page.setPrerenderingAllowed', { isAllowed: true });
    });

    await browser.navigateTo("http://localhost:8080");
    // TODO: required for Firefox - find something to wait for that will be faster
    await new Promise(r => setTimeout(r, 1000));
  } finally {
    server.closeAllConnections();
    await new Promise(r => server.close(r));
  }
}

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find a way to record events from speculationrules #4

find a way to record events from speculationrules #4

chrmod commented Oct 1, 2024

find a way to record events from speculationrules #4

find a way to record events from speculationrules #4

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chrmod commented Oct 1, 2024