import type { GridSpec } from "../../../types.js";
import type { GroupFn } from "@1771technologies/lytenyte-shared";
import type { PivotModel } from "../../use-client-data-source.js";
export declare function usePivotGroupFn<Spec extends GridSpec>(pivotMode: boolean, model: PivotModel<Spec> | undefined): GroupFn<Spec["data"]> | null;