import { type PieArcDatum } from 'd3-shape';
import { InternalSliceData } from '../types/internal/pie-chart.js';
/**
 * Builds a subpixel-width (fixed-pixel-thickness) wedge marking where a single aggregated
 * subpixel slice would sit if it were wide enough to render. The marker is
 * positioned proportionally within the `subpixel-slices` bucket arc and filled
 * with the hovered slice's own color.
 *
 * @returns the marker path and color, or `undefined` when the hovered id is not
 * one of the bucket's grouped slices (or the geometry is degenerate).
 */
export declare const buildSubpixelSliceMarker: (bucketArc: PieArcDatum<InternalSliceData>, hoveredId: string, innerRadius: number, outerRadius: number) => {
    path: string;
    color: string;
} | undefined;
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