import { default as Supercluster, ClusterFeature, PointFeature } from 'supercluster';
import { Selection } from 'd3-selection';
import { NumericAccessor } from '../../types/accessor';
import { AreaLabelDatum, TopoJSONMapPieDatum, TopoJSONMapPointStyles, TopoJSONMapPointShape, TopoJSONMapPoint, TopoJSONMapPointDatum, TopoJSONMapClusterDatum } from './types';
import { TopoJSONMapConfigInterface } from './config';

export declare function getLonLat<Datum>(d: Datum, pointLongitude: NumericAccessor<Datum>, pointLatitude: NumericAccessor<Datum>): [number, number];
export declare function arc(source?: number[], target?: number[], curvature?: number): string;
export declare function getPointPathData({ x, y }: {
    x: number;
    y: number;
}, radius: number, shape: TopoJSONMapPointShape): string;
export declare function collideAreaLabels(selection: Selection<SVGTextElement, AreaLabelDatum, SVGGElement, unknown>, duration: number): void;
export declare function collidePointBottomLabels<PointDatum>(selection: Selection<SVGTextElement, TopoJSONMapPoint<PointDatum>, SVGGElement, unknown>, duration: number): void;
export declare function getDonutData<PointDatum>(d: PointDatum, colorMap: TopoJSONMapPointStyles<PointDatum> | undefined): TopoJSONMapPieDatum[];
export declare function toGeoJSONPoint<D>(d: D, i: number, pointLatitude: NumericAccessor<D>, pointLongitude: NumericAccessor<D>): PointFeature<D>;
export declare function calculateClusterIndex<A, D, L>(data: D[], config: TopoJSONMapConfigInterface<A, D, L>, maxClusterZoomLevel?: number): Supercluster<D>;
export declare function getPointRadius<D>(geoPoint: ClusterFeature<TopoJSONMapClusterDatum<D>> | PointFeature<TopoJSONMapPointDatum<D>>, pointRadius: NumericAccessor<D>, zoomLevel: number): number;
export declare function geoJsonPointToScreenPoint<A, D, L>(geoPoint: ClusterFeature<TopoJSONMapClusterDatum<D>> | PointFeature<TopoJSONMapPointDatum<D>>, i: number, projection: (coordinates: [number, number]) => [number, number], config: TopoJSONMapConfigInterface<A, D, L>, zoomLevel: number): TopoJSONMapPoint<D>;
export declare function getClustersAndPoints<D>(clusterIndex: Supercluster<D>, bounds: [number, number, number, number], zoom: number): (ClusterFeature<TopoJSONMapClusterDatum<D>> | PointFeature<D>)[];
export declare const getNextZoomLevelOnClusterClick: (level: number, maxZoom?: number) => number;
export declare function shouldClusterExpand<D>(cluster: TopoJSONMapPoint<D>, zoomLevel: number, midLevel?: number, maxLevel?: number, maxClusterZoomLevel?: number): boolean;
export interface PackedPoint {
    dx: number;
    dy: number;
    packedRadius: number;
}
export declare function getClusterRadius<D>(expandedCluster: {
    points: PackedPoint[];
    cluster: TopoJSONMapPoint<D>;
}): number;