import { SpatialGeometry } from './utils';
import { Feature } from 'geojson';
/**
 * Get a cartogram of the given geometries and values. The cartogram is a set of buffers around the given geometries.
 * The radius of the buffers is proportional to the values.
 *
 * ## Example
 * ```ts
 * const geoms = [
 *   { type: 'Point', coordinates: [0, 0] },
 *   { type: 'Point', coordinates: [1, 1] },
 * ];
 *
 * const values = [1, 2];
 *
 * const cartogram = await getCartogram(geoms, values);
 *
 * console.log(cartogram);
 * ```
 * @param geoms The geometries to get the cartogram of
 * @param values The values to use for the cartogram
 * @param iterations The number of iterations to run the cartogram algorithm
 * @param numberOfPointsPerCircle The number of points per circle. This is used to control the granularity of the buffers.
 * @returns The cartogram as a GeoJSON FeatureCollection
 */
export declare function getCartogram(geoms: SpatialGeometry, values: number[], iterations?: number, numberOfPointsPerCircle?: number): Promise<Feature[]>;