No indication of registration of a worker on Waterfox 56.2.0 or Firefox 60.0.1 about service-worker-detector HOT 6 CLOSED

Twitter currently might just register a service worker for its mobile site, not the desktop site, which probably is the reason why you're not seeing the icon pop up.

If you try with a simple PWA like @PaulKinlan's Airhorner, you can see it works fine on Firefox as well as Waterfox:

This is working as intended, closing the issue.

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is the extension designed to surface the icon only whilst a registered Service Worker is also active?

@grahamperrin Correct, the extension only triggers when navigator.serviceWorker.controller is no longer null, i.e., as soon as the service worker becomes active (documentation).

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Interestingly, in Waterfox I got this for a domain where pages do not load when expected:

(The non-appearance of page content is neither an issue with this extension nor, AFAICT, an issue with Waterfox.)

Two frames from a subsequent screen recording:

… so maybe the issue, at least for Waterfox, is that an expected preference is both:

(Does that make sense?)

Postscript

I imagined, wrongly, that the checkboxes would (a) be persistent; and (b) determine when the construction worker icon should surface.

Eventually I realised that the checkboxes are non-persistent, to temporarily highlight relevant strings in the pop-up.

OT from Service Worker Detector, https://github.com/MrAlex94/Waterfox/issues/581 is 'Corrupted Content Error' or 'Cannot load app' …

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@tomayac thanks for the speedy feedback, and example 👍

Here, Service Worker Detector 2.3.14 added to a clean profile with Firefox 60.0.1 (64-bit) on FreeBSD-CURRENT:

Please, am I missing something?

I'll test on a Mac …

Postscript

After a while, but (unless I'm losing my mind) not after a reload of the page, the construction worker did appear.

I'll aim to make the issue, the non-appearance, more reproducible.

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Twitter

Twitter currently might just register a service worker for its mobile site, not the desktop site, which probably is the reason why you're not seeing the icon pop up.

Here, with the same fairly clean profile (visibly dirtied only by the astonishing fragility of favicons) there is registration for Twitter:

– and the construction worker icon does not surface, from the menu, to the address bar. I'm reasonably certain of the non-surface because I can:

1. un-register the service worker
2. bring the https://twitter.com/ tab to the front
3. click the Page actions menu icon
4. observe the 'No active Service Worker found.' state
5. continue observing that state whilst repeatedly using Control-R to reload the page.

Please: is the extension designed to surface the icon only whilst a registered Service Worker is also active?

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OK, thanks!

Sorry for the over-focus on the Service Worker with scope https://twitter.com/. I can't guess when it will be activated …

… the Service Worker with scope https://mobile.twitter.com/ does activate, here, with a simple logged in visit to https://mobile.twitter.com/home – I have the construction worker icon in the address bar of Waterfox.

I'll ignore the non- (or delayed) activation of the worker at https://airhorner.com/ – couldn't make the oddity reproducible, in Firefox. It works in Waterfox.

I sped through all thirty-something Service Worker registrations in my main Waterfox profile.

The majority do lead to visibility of a construction worker icon. For the handful that do not, I might raise a separate issue (enhancement request), nothing too complicated …

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