NOTE: This can be resolved when the following query returns zero results:
https://codesearch.wmcloud.org/deployed/?q=mediawiki.ui%28%5C.button%7C%5C.anchor%7C%5C.checkbox%7C%5C.input%7C%5C.radio%7C%5C.icon%7C%22%22%7C%27%29&files=&excludeFiles=%28docroot%2F.*%7Ctests%2F.*%7Ctest%2F.*%29&repos= and a solution has been found for on-wiki usage.
Coming from [[ http://reading-web-staging.wmflabs.org/w/load.php?debug=true&lang=en&modules=mediawiki.hlist%7Cmediawiki.ui.button%2Ccheckbox%2Cicon%2Cinput%2Cradio%7Cmediawiki.widgets.styles%7Cmobile.messageBox.styles%7Cmobile.special.mobileoptions.styles%7Cmobile.special.styles%7Coojs-ui-core.styles%7Coojs-ui.styles.icons-alerts%2Cicons-content%2Cicons-interactions%2Cindicators%2Ctextures%7Cskins.minerva.base.reset%2Cstyles%7Cskins.minerva.content.styles%7Cskins.minerva.icons.images%7Cskins.minerva.tablet.styles&only=styles&skin=minerva | MinervaNeue default payload ]] question:
We're still loading mediawiki.ui component code per default.
We should evaluate and remove styles from rendering-critical CSS
[x] Deprecate mediawiki.ui
# mediawiki.ui ResourceLoader modules
# done
[x] Extension:WikimediaMessages
[x] MultimediaViewer (T340258)
[x] Extension:MobileFrontend
[x] core HTMLRadioField.php https://gerrit.wikimedia.org/r/919392
[x] Extension:Popups (T348069)
[x] CentralAuth - Special:GlobalRenameQueue (T347514)
[x] Extension:Flow – https://gerrit.wikimedia.org/r/#/c/429160/
## radios only
[x] Extension:ExternalGuidance https://gerrit.wikimedia.org/r/c/mediawiki/extensions/ExternalGuidance/+/979432
## inputs only
[] Extension:ConfirmEdit (T353368)
## buttons only
[x] Extension:OAuth https://gerrit.wikimedia.org/r/c/mediawiki/extensions/OAuth/+/982910
[] Extension:GuidedTour https://gerrit.wikimedia.org/r/c/mediawiki/extensions/GuidedTour/+/982911
## inputs and checkboxes
[] Extension:InputBox (T353371)
## buttons and radios and checkboxes
[X] Extension:UniversalLanguageSelector (T340255)
## buttons and icons
[] Extension:ContentTranslation (T340259)
## buttons and inputs
[] Extension:Translate [T343454]
[] Flow (buttons, inputs) T354391 https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Flow/+/987868/
## Core
[] Deprecate setting UseMediaWikiUIEverywhere to true. Most usages relate to UseMediaWikiUIEverywhere - which is no longer used in WMF production.
[] VFormHTMLForm - possibly no longer being used. Will need to investigate
[x] Provide migration path for templates (see T346469 for proposal)
[x] Notify template editors on outcome of T346469
[x] Special:Search T258196
# mediawiki.ui utilities
Provides the mixins:
* .mw-ui-flush-left
* .mw-ui-flush-right
* .mw-ui-center-block
[x] Fix remaining usages in T212095
[] Remove mixin code from MediaWiki core.