import { hooks } from '@opentiny/vue-common';
export declare const calcHeader: (collectColumn: any) => {
    leafColumns: never[];
    headerTable: never[];
    rowspanMap: WeakMap<object, any>;
    maxLevel: number;
};
export declare const useHeader: (props: any, bodyVm: any, headerRowHeight: any) => {
    headerTable: hooks.Ref<never[]>;
};