Compatibility/System Addon: Difference between revisions

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The WebCompat System add-on proposes to provide a site patching mechanism for Firefox users. A site patch is defined as an origin- or path-scoped block of JavaScript that runs in the context of a web page.
The WebCompat System add-on proposes to provide a site patching mechanism for Firefox users. A site patch is defined as an origin- or path-scoped block of JavaScript that runs in the context of a web page.


By using the go faster system add-ons infrastructure and delivery mechanism, we can add and remove top web property site patches via out of band updates (i.e., not tied to the release train cadence). The intention is to provide a means to fix urgent issues until outreach efforts are successful, or until platform bugs or regressions are shipping in release builds as fixed.
By using the system add-ons infrastructure and delivery mechanism, we can add and remove top web property site patches via out of band updates (i.e., not tied to the release train cadence). The intention is to provide a means to fix urgent issues until outreach efforts are successful, or until platform bugs or regressions are shipping in release builds as fixed.


== Use Cases ==
== Use Cases ==
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* A top site relies on a (mostly) shimmable non-standard API, e.g., window.event
* A top site relies on a (mostly) shimmable non-standard API, e.g., window.event


== Roadmap and Features ==
== Looking for source? ==


* [[Compatibility/Go_Faster_Addon/Roadmap|Roadmap]]
The primary codebase is [https://searchfox.org/mozilla-central/source/browser/extensions/webcompat located in-tree at <code>browser/extensions/webcompat/</code>]
* [[Compatibility/Go_Faster_Addon/Initial_Planning|Initial planning notes]]
* [[Compatibility/Go_Faster_Addon/AutoTest|AutoTest]]


== Looking for source? ==
== Automated Tests ==


The development of our Go Faster Addon is [https://github.com/mozilla-extensions/webcompat-addon happening on GitHub].
See https://wiki.mozilla.org/Compatibility/System_Addon/Automated_Testing


== Other important documents ==
== Other important documents ==


* [[Compatibility/Go_Faster_Addon/Override_Policies_and_Workflows|Override Policies and Workflows]] - on when and how to add overrides and code injections.
* [[Compatibility/System_Addon/Interventions|WebCompat Interventions]] - on adding site patches.
* Currently deployed interventions across all channels are listed on [https://arewehotfixingthewebyet.com/ areWeHotfixingTheWebYet.com]
* Currently deployed interventions across all channels are listed on Bugzilla with the [https://bugzilla.mozilla.org/buglist.cgi?f1=keywords&resolution=---&v1=webcompat%3Asitepatch-applied&o1=substring&query_format=advanced <code>webcompat:sitepatch-applied</code> keyword], or in the [https://searchfox.org/mozilla-central/source/browser/extensions/webcompat/data/interventions.json looking at the <code>interventions.json</code> file itself].


[[Category:Web Compatibility]]
[[Category:Web Compatibility]]
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