search and service worker js not loaded from relative url

[olizilla]

The service worker script sw.js and the flexsearch.js are both loaded dynamically, and the paths are stored in places that hugo cannot re-write to be relative urls...

• sw.js uses a custom element and stores the path
  

  specs/layouts/partials/docs/inject/body.html

  Line 2 in 71f3720

  <pwa-update swpath="{{ "/sw.js" | relURL }}"></pwa-update>

• flexsearch.js is loaded dynamically by js
  https://github.com/alex-shpak/hugo-book/blob/f416a71bf8bb77e7af9ade9eea7fe3b662962290/assets/search.js#L49-L50

the relUrl filter in hugo is not sufficient to get fully relative paths across the site. Hugos global relativeUrls parameter re-writes all URLs in standard src and href attributes after the site has been built. URLs stored in JS or custom elements aren't picked up.

The simple fix for this is to upate the preview URLs to use cid-in-subdomain, which is now the preferred mechanism. The service worker is not critical to have working in preview urls, and the flexsearch will be disabled in favour of #984

[olizilla]

Issue already raised in #993

[olizilla]

nope, that issue was for an issue on the beta.spec.filecoin.io domain, this one is for previews on IPFS.