/**
 * Calculates the ground resolution (meters per pixel) for a given latitude and zoom level.
 *
 * Ground resolution is the distance on the ground that is represented by one pixel on the map.
 * It varies depending on the latitude due to the curvature of the Earth and the map projection.
 *
 * @param latitude - The latitude in degrees (between -90 and 90).
 * @param zoomLevel - The zoom level (typically between 0 and 21 for web maps).
 * @returns The ground resolution in meters per pixel.
 */
export declare const getGroundResolution: (latitude: number, zoomLevel: number) => number;