Relax top-level service worker requirement

[jeffposnick]

As per w3c/ServiceWorker#839 (comment), it sounds like the service worker specification will be updated to allow any byte-by-byte changes to importScripts() resources to trigger the Install flow. This opens the door towards allowing developers to pull in sw-precache's output via importScripts() instead of forcing them to use it as their top-level service worker.

It also might open the door to some of the refactoring that @gauntface has advocated for in #43 and elsewhere.

This all will depend on browsers shipping service worker implementations that adhere to the new behavior, so this issue is more of a long-term reminder than anything immediately actionable.

CC: @addyosmani @wibblymat

[gauntface]

This is very exciting :)

On Fri, 29 Jul 2016, 11:43 Jeffrey Posnick, [email protected]
wrote:

As per w3c/ServiceWorker#839 (comment)
w3c/ServiceWorker#839 (comment),
it sounds like the service worker specification will be updated to allow
any byte-by-byte changes to importScripts() resources to trigger the
Install flow. This opens the door towards allowing developers to pull in
sw-precache's output via importScripts() instead of forcing them to use
it as their top-level service worker.

It also might open the door to some of the refactoring that @gauntface
https://github.com/gauntface has advocated for in #43
#43 and elsewhere.

This all will depend on browsers shipping service worker implementations
that adhere to the new behavior, so this issue is more of a long-term
reminder than anything immediately actionable.

CC: @addyosmani https://github.com/addyosmani @wibblymat
https://github.com/wibblymat

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[addyosmani]

👍 . @jeffposnick I wasn't able to locate a Chromium bug on the related ServiceWorker thread to track when we might be able to switch to the ideas in #43. Do you know if one has been filed yet?

[jeffposnick]

I haven't seen one. I'll ask around internally to make sure it's on the Chrome engineering team's radar.

[jeffposnick]

The pre-requisite functionality is tracked in Chrome at https://bugs.chromium.org/p/chromium/issues/detail?id=648295
and in Firefox at https://bugzilla.mozilla.org/show_bug.cgi?id=1290951

[jeffposnick]

Developers who need this functionality are encouraged to migrate to https://workboxjs.org/

That has superseded any plans to rewrite sw-precache to add in this functionality.