NOTE: See announcement at <https://lists.wikimedia.org/pipermail/wikitech-l/2013-October/072776.html>
NOTE: See announcement at https://lists.wikimedia.org/pipermail/wikitech-ambassadors/2017-April/001574.html
WARNING:
Users using old [[https://www.mediawiki.org/wiki/Manual:Interface/JavaScript|user or local scripts and gadgets]] have JavaScript broken since 2017-04-27. Some [[https://en.wikipedia.org/w/index.php?title=Wikipedia:Village_pump_(technical)&oldid=777814155#Guide:_How_to_find_which_scripts_are_actually_broken|advice on what to disable]] is available. See also **[[https://www.mediawiki.org/wiki/ResourceLoader/Migration_guide_(users) | mw:RL/MGU ]]** and **[[ https://www.mediawiki.org/wiki/ResourceLoader/Legacy_JavaScript#wikibits.js | mw:RL/JD ]]**.
(WARNING) **REMINDER:** If a Gadget or Common.js script uses **mw.util**, **mw.notify**, or any other module that wikibits happened to be loading previously, these must be declared as a dependency in [[MediaWiki:Gadgets-definition]] (adding `|dependency=mediawiki.util`, [[https://it.wikipedia.org/w/index.php?title=MediaWiki%3AGadgets-definition&type=revision&diff=87469768&oldid=86874708|example]]) or ensures through `mw.loader.using()`. See [[https://ja.wikipedia.org/w/index.php?title=MediaWiki:Common.js&diff=63936276&oldid=62869164|example edit]].
```
* @deprecated since 1.17 Use jquery.client instead
* @deprecated since 1.17 Use jQuery instead
* @deprecated since 1.17 Use jquery.checkboxShiftClick instead
* @deprecated since 1.17 Use mw.toolbar instead
* @deprecated since 1.18 Use jquery.spinner instead
* @deprecated since 1.18 Use mw.html instead
* @deprecated since 1.17 Use mediawiki.notify instead
* @deprecated since 1.17 Use mediawiki.util or jquery.accessKeyLabel instead
* @deprecated since 1.17 Use mw.loader instead. Warnings added in 1.25.
* @deprecated since 1.17 Use mw.loader instead. Warnings added in 1.25.
```
I'm guessing most of them will be onwiki usages, which are more of a PITA to cleanup
⇨ **[mw-js-deprecate usage (logged-in users only, sampled 1:100)](https://grafana.wikimedia.org/dashboard/db/mw-js-deprecate?refresh=1m&orgId=1&from=now-2y&to=now)**
{F7495864 height=300}