windowclient-navigate-worker.js

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importScripts("/speculation-rules/prerender/resources/utils.js");

const params = new URLSearchParams(location.search);

const uid = params.get('uid');

const bc = new PrerenderChannel('navigation-channel', uid);

bc.onmessage = async e => {

  const data = JSON.parse(e.data);

  const navigationUrl = data.navigationUrl;

  const clientUrl = data.clientUrl;

  const respondTo = data.respondTo;

  const clients = await self.clients.matchAll();

  const client = clients.find(c => c.url == clientUrl);

  if (!client) {

    const bc = new PrerenderChannel(respondTo, uid);

    bc.postMessage('Client was not found');

    bc.close();

    return;

  let result;

  try {

    await client.navigate(navigationUrl);

    result = 'navigate() succeeded';

  } catch (e) {

    if (e instanceof TypeError) {

      result = 'navigate() failed with TypeError';

    } else {

      result = 'navigate() failed with unknown error';

  } finally {

    const bc = new PrerenderChannel(respondTo, uid);

    bc.postMessage(result);

    bc.close();

};