import type { Arc } from 'd3-shape';
export interface PolarSectorGeometry {
    readonly startAngle: number;
    readonly endAngle: number;
    readonly innerRadius: number;
    readonly outerRadius: number;
    readonly cornerRadius: number;
}
export interface ResolvedPolarSector {
    readonly path: string;
    readonly points: readonly (readonly [number, number])[];
}
/** Resolves one D3 sector and samples its painted interaction boundary. */
export declare function resolvePolarSector(sector: PolarSectorGeometry): ResolvedPolarSector | undefined;
export declare function tracePolarArcBoundary<TDatum>(generator: Arc<any, TDatum>, datum: TDatum, index: number, data: readonly TDatum[]): readonly (readonly [number, number])[];