import { Topology } from 'topojson-specification';
import { ChoroplethOptions, DrillStep, DrillStepConfig } from './types';
export declare const getGeoAreaConfig: (geoArea?: ChoroplethOptions['geoArea']) => {
    url: string;
    type: string;
    extension: string;
};
export declare const topojson2geojson: (json: Topology) => import("geojson").Feature<import("geojson").Point, import("geojson").GeoJsonProperties>;
export declare const isEqualDrillSteps: (newSteps: DrillStep[], oldSteps: DrillStep[]) => boolean;
export declare const getDrillStepDefaultConfig: (options: ChoroplethOptions) => DrillStepConfig;