import type { ChartUnit } from '../../../../../core/types/chart-unit.js';
import { TimeseriesDatapoint } from '../../../../../core/types/timeseries.js';
export type CumulativePoint = {
    datapointsCumulative: number;
    baseCumulative: number;
    seriesId: string;
};
export type MapStackedPoint = Map<string, CumulativePoint>;
/**
 * Gets the stacked key for the mapStackedPoints Map
 *
 * @param sign - current sign
 * @param datapoint - Current datapoint
 * @param unit - Current series unit
 * @returns - Stacked key to access the mapStackedPoints
 */
export declare function getStackedKeyByUnit(sign: number, datapoint: TimeseriesDatapoint, unit: ChartUnit): string;
/**
 * Gets the cumulative point value from the mapStackedPoints given the new value.
 *
 * @param mapStackedPoints - Given MapStackedPoint map
 * @param datapoint - Current datapoint
 * @param unit - Current series unit
 * @param seriesId - Current series id
 * @param value - Current modified value of the datapoint
 * @param sign - sign where value will be stacked
 * @returns - CumulativePoint
 */
export declare function getCumulativeValue(mapStackedPoints: MapStackedPoint, datapoint: TimeseriesDatapoint, unit: ChartUnit, seriesId: string, value: number | undefined, sign: number): {
    cumulativeValue: number;
    datapointsCumulative: number;
    baseCumulative: number;
    key: string;
};