import type { AreaScaleLinear } from '../../types/guards.js';
import type { AnyXYChartScale, MapDatapoints, XYChartAxisDirection } from '../../types/xy-chart-internals.js';
import type { AreaDatapoint } from '../../types/xy-chart.js';
export declare function applyNumericalBarScaleTransformations(args: AreaScaleLinear & {
    v1: number;
}, accessorCoord: 'x' | 'y', baseline: XYChartAxisDirection, relAccessor?: ((value: number) => number) | undefined, accumulator?: number, binDomain?: number, isSeriesStacked?: boolean): AreaScaleLinear & {
    v1: number;
};
export declare function applyNumericalBarScaleTransformations(args: AreaScaleLinear, accessorCoord: 'x' | 'y', baseline: XYChartAxisDirection, relAccessor?: ((value: number) => number) | undefined, accumulator?: number, binDomain?: number, isSeriesStacked?: boolean): AreaScaleLinear;
/**
 * X accessor for the primary (category/time) axis in vertical area charts.
 * Used when x0/x1 define the categorical or time dimension.
 */
export declare const xAccessor: (scale: AnyXYChartScale, relAccessor?: (value: number) => number) => (datapoint: AreaDatapoint) => number;
/**
 * Vertical area stacking accessors (y0 = baseline, y1 = top)
 * baselineCoord is 'x' because vertical areas stack along the Y axis
 * while the X axis is the primary/categorical axis.
 */
export declare const y0Accessor: (scale: AnyXYChartScale, datapointsMetadata: MapDatapoints, relAccessor?: (value: number) => number, isSeriesStacked?: boolean) => (datapoint: AreaDatapoint) => number, y1Accessor: (scale: AnyXYChartScale, datapointsMetadata: MapDatapoints, relAccessor?: (value: number) => number, isSeriesStacked?: boolean) => (datapoint: AreaDatapoint) => number;
/**
 * Y accessor for the primary (category/time) axis in horizontal area charts.
 * Used when y0/y1 define the categorical or time dimension.
 */
export declare const yAccessor: (scale: AnyXYChartScale, relAccessor?: (value: number) => number) => (datapoint: AreaDatapoint) => number;
/**
 * Horizontal area stacking accessors (x0 = baseline, x1 = right edge)
 * baselineCoord is 'y' because horizontal areas stack along the X axis
 * while the Y axis is the primary/categorical axis.
 */
export declare const x0Accessor: (scale: AnyXYChartScale, datapointsMetadata: MapDatapoints, relAccessor?: (value: number) => number, isSeriesStacked?: boolean) => (datapoint: AreaDatapoint) => number, x1Accessor: (scale: AnyXYChartScale, datapointsMetadata: MapDatapoints, relAccessor?: (value: number) => number, isSeriesStacked?: boolean) => (datapoint: AreaDatapoint) => number;