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As follow-up to T203695: Drastically reduce the number of ResourceLoader modules that CX creates, we could invest using the new "package files" feature of the resource loader to reduce the number of modules further.
Ideally, we would only have a handful of modules:
| Subject | Repo | Branch | Lines +/- | |
|---|---|---|---|---|
| Combine single-use resource loader modules into `ext.cx.tools` | mediawiki/extensions/ContentTranslation | master | +95 -282 |
| Status | Subtype | Assigned | Task | ||
|---|---|---|---|---|---|
| Open | None | T231326 Use ResourceLoader package files to reduce number of CX modules | |||
| Resolved | santhosh | T232369 Remove CX1 codebase once there are no translations started with version 1 |
Documentation for this is a bit hard to find (T232566: $wgResourceModules documentation is incomplete), but there are examples to copy too.
Some concerns have been raised that reducing the number of modules goes against making reusable code.
I don't have the CX module dependency map right now, but I guess there aren't that many modules that are actually shared across different contexts (entrypoints, stats view, dashboard, translation view).
Also, I believe it would be possible to share some simple modules just by having their scripts included in the packageFiles of multiple modules, though I have not tested this. It does make things complicated though if they have dependencies of their own, or config and styles, which would need to be duplicated.
I wrote a code to analyze RL dependency graph and find things that can be merged, CX modules stood out a lot. Given that dropping each CX module saves 30 GB/day, I put them here and I hope you find them useful. The analysis of course can have false positives (like lazy loading, etc.) but looking at this might help you:
Thanks! A bunch of those involve CX1 which we would prefer not to touch at all until it is removed completely.
Hello, your annoying reminder is here :D, I think the 420 days you mentioned in T203695#5158942 has passed now, shall we drop them?
Change 607921 had a related patch set uploaded (by Santhosh; owner: DannyS712):
[mediawiki/extensions/ContentTranslation@master] Combine single-use resource loader modules into ext.cx.tools
Change 607921 merged by jenkins-bot:
[mediawiki/extensions/ContentTranslation@master] Combine single-use resource loader modules into ext.cx.tools
🎉 Thanks for T232369. This change has made a considerable impact, reducing the startup payload for page views by about 2% (or 1.5KB).
There is still a lot of bundling left to do compared to other extensions, but this is a huge leap forward. Thanks all!
(From Grafana: Startup manifest size.)