Rocket.Chat/client/sidebar/hooks/useQueryOptions.js

import { useMemo } from 'react';

import { useSetting } from '../../contexts/SettingsContext';
import { useUserPreference } from '../../contexts/UserContext';

export const useQueryOptions = () => {
	const sortBy = useUserPreference('sidebarSortby');
	const showRealName = useSetting('UI_Use_Real_Name');

	return useMemo(() => ({
		sort: {
			...sortBy === 'activity' && { lm: -1 },
			...sortBy !== 'activity' && {
				...showRealName && { lowerCaseFName: /descending/.test(sortBy) ? -1 : 1 },
				...!showRealName && { lowerCaseName: /descending/.test(sortBy) ? -1 : 1 },
			},
		},
	}), [sortBy, showRealName]);
};