Service workers not enabled/supported in current app

[ikreymer]

Similar to kiwix/kiwix-desktop#487, the embedded WKWebView does not appear to support service workers.
They would be needed for the new replay system.

It's not entirely clear if WKWebView supports them fully, see:
https://developer.apple.com/forums/thread/126923 it may require a different approach or using Safari directly,
or maybe this has changed.

(I tried the existing app on MacOS, ran into issues when trying to build locally per instructions. Can open separate issue for that)

[kelson42]

@automactic This is a critical problem as we plan to put in production ZIM files using service workers in Q4 of this year. Would you be able to give us quickly a feedback on this?

[kelson42]

@automactic @ikreymer Should we consider this is the same bug/ticket for iOS and macOS or should we open a separate ticket?

[rgaudin]

@kelson42 we can keep a single ticket until this gets implemented as both iOS and macOS uses WKWebView (although implemented at different locations).

Service workers (whatever the scheme – both app uses kiwix://) won't work on current iOS 13 nor Autumn expected iOS14 as per this SO answer

tldr: the feature has been implemented but it requires a permission (entitlement) which can not be requested on the store backend.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be now be reviewed manually. Thank you for your contributions.

[kelson42]

Basically a duplicate of #341