Offline page not working

[sebastianbenz]

The offline page is currently not working for amp.dev. Here is our serviceworker:

importScripts('https://cdn.ampproject.org/sw/amp-sw.js');
AMP_SW.init({
  assetCachingOptions: [{
    regexp: /\.(png|jpg|woff2|woff|css|js)/,
    cachingStrategy: 'CACHE_FIRST',
  }],
  offlinePageOptions: {
    url: '/offline.html',
    assets: [],
  },
});

Steps to reproduce:

1. visit amp.dev
2. open DevTools and check if sw is installed and /offline.html is cached
3. Trigger offline mode in DevTools
4. Reload the page => works
5. click a link to an uncached page
   => no offline page is shown

[DerekNonGeneric]

Once implemented, I feel ampproject/amp.dev#589 will have been addressed as a revision of the SW's implementation will have been made. You all have made a lot of progress towards satisfying Lighthouse's PWA criteria since I filed that issue two years ago. Good work! 👍

[seomaz]

@kristoferbaxter Any update on this ?