import { PieChartDefinition, ChartData, PieChartDataItem } from '../../../PredefinedConfig/RunTimeState/ChartState';
import { PieChartComponentState } from './PieChartComponentState';
import { SliceSortOption } from '../../../PredefinedConfig/Common/ChartEnums';
export declare function getBrushesEven(): string[];
export declare function getBrushesOdd(): string[];
export declare function setChartDisplayPopupState(chartDefinition: PieChartDefinition, dataSource: ChartData): PieChartComponentState;
export declare function setDefaultChartDisplayPopupState(): PieChartComponentState;
export declare function sortDataSource(sliceSortOption: SliceSortOption, oldData: PieChartDataItem[]): PieChartDataItem[];
export declare function sortByNameAscending(a: PieChartDataItem, b: PieChartDataItem): number;
export declare function sortByNameDescending(a: PieChartDataItem, b: PieChartDataItem): number;
export declare function sortByValueAscending(a: PieChartDataItem, b: PieChartDataItem): number;
export declare function sortByValueDescending(a: PieChartDataItem, b: PieChartDataItem): number;
export declare const PieChartUIHelper: {
    getBrushesEven: typeof getBrushesEven;
    getBrushesOdd: typeof getBrushesOdd;
    setChartDisplayPopupState: typeof setChartDisplayPopupState;
    setDefaultChartDisplayPopupState: typeof setDefaultChartDisplayPopupState;
    sortDataSource: typeof sortDataSource;
    sortByNameAscending: typeof sortByNameAscending;
    sortByNameDescending: typeof sortByNameDescending;
    sortByValueAscending: typeof sortByValueAscending;
    sortByValueDescending: typeof sortByValueDescending;
};
export default PieChartUIHelper;