* Title::isCssJsSubpage – use ::isUserConfigPage
* Title::isCssSubpage – use ::isUserCssConfigPage
* Title::isJsSubpage – use ::isUserJsConfigPage
+* The following variables and method in EditPage, deprecated in MediaWiki 1.30, were removed:
+ * $isCssJsSubpage — use ::isUserConfigPage()
+ * $isCssSubpage — use ::isUserCssConfigPage()
+ * $isJsSubpage — use ::isUserJsConfigPage()
+ * $isWrongCaseCssJsPage – use ::isWrongCaseUserConfigPage()
* The method ResourceLoaderModule::getPosition(), deprecated in 1.29, has been removed.
* The DeferredStringifier class is deprecated, use Message::listParam() instead.
* The type string for the parameter $lang of DateFormatter::getInstance is