Get sys_category UIDs for current page

fluid.html

<f:cObject typoscriptObjectPath="lib.newsList" data="{f:cObject(typoscriptObjectPath:'lib.categoryUid', data:'{page}')}"/>

lib.ts

lib.categoryUid = CONTENT
lib.categoryUid {
	table = sys_category
	select {
		pidInList = [PID WHERE SYS_CATEGORIES ARE STORED]
		selectFields = sys_category.uid as catUid
		join = sys_category_record_mm ON sys_category_record_mm.uid_local = sys_category.uid
		where = sys_category_record_mm.tablenames = 'pages' AND sys_category_record_mm.uid_foreign = {field: uid}
		where.insertData = 1
		#orderBy = sys_category_record_mm.sorting_foreign
		languageField = sys_category.sys_language_uid
	}
	renderObj = TEXT
	renderObj {
		field = catUid
		wrap = |,
	}
}

lib.newsList = USER
lib.newsList {
    userFunc = TYPO3\CMS\Extbase\Core\Bootstrap->run
    pluginName = Pi1
    extensionName = News
    controller = News
    action = List
    settings =< plugin.tx_news.settings
    persistence =< plugin.tx_news.persistence
    view =< plugin.tx_news.view
    switchableControllerActions.News.1 = list
    settings {
        useStdWrap = categories
        categories.stdWrap.cObject = TEXT
        categories.stdWrap.cObject.current = 1
        categoryConjunction = or
        includeSubCategories = 1
    }
}