import { ComboboxGroupByValue } from './ComboboxGroupContext';
export declare function useGroups<Item>({ items, groupBy, groupToString, groupSorter, }: {
    items: Item[];
    groupBy?: string;
    groupToString?: (key: string) => string | null;
    groupSorter?: (a: ComboboxGroupByValue, b: ComboboxGroupByValue) => number;
}): {
    groups: {
        items: Item[];
        key: ComboboxGroupByValue;
        label: string | null;
    }[];
    orderedItems: Item[];
};