import { EvolutionChartDataset } from './EvolutionChart';
export type TooltipCalculations = {
    currentIndex: number;
    currentTotal: number;
    previousTotal: number;
    currentSegment: number | undefined;
    previousSegment: number | undefined;
    valueToDisplay: number;
    previousValue: number;
    isIncrease: boolean;
    isPositive: boolean;
    percentageChange: number;
};
export type TooltipPositions = {
    curX: number;
    curY: number;
    prevXPos?: number;
    prevYPos?: number;
};
export type MultiTooltipData = {
    firstVal: number;
    val: number;
    showDelta: boolean;
    pctChange: number;
    isIncreaseVsFirst: boolean;
    isPositiveVsFirst: boolean;
};
export declare const calculateTooltipData: (hoveredDatasetIndex: number | null, datasets: EvolutionChartDataset[], labels: string[], label: string | number, currentData: {
    total: number;
}, positiveTrend: "increase" | "decrease", legendHovering: boolean) => TooltipCalculations | null;
export declare const calculateTooltipPositions: (coordinate: {
    x: number;
    y: number;
}, currentX?: number, barTopY?: number, prevX?: number, prevBarTopY?: number) => TooltipPositions;
export declare const formatTooltipValue: (value: number, valueFormatterFn: (value: number, precision?: number) => string, precision?: number) => string;
export declare const calculateMultiTooltipData: (datasets: EvolutionChartDataset[], hoveredIdx: number, idx: number, labels: string[], positiveTrend: "increase" | "decrease") => MultiTooltipData;