* refactor: Use log function in service worker
* Add verbose logging on push listener
* Fix TypeError: Cannot read properties of null (reading 'postMessage')
navigator.serviceWorker.controller is null on forced refreshes:
"""
This property returns null if the request is a force refresh (Shift + refresh) or if there is no active worker.
"""
-- https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerContainer/controller
This means when we unregister a service worker manually (like I do for debugging purposes) and then reload the page, there is no service worker available when this code is run.
Adding a check with a more helpful error message should improve UX.
This error might also happen in other cases where a page refresh should also help.
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Co-authored-by: ekzyis <ek@stacker.news>
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