export function invGudermannian(y: number): number;
export default latToY;
/**
 * Translate latitude to Y in the Mercator projection
 * @param {number} lat - Latitude.
 * @param {number} zoom - Zoom level
 * @return {number} Y coordinate in the Mercator projection.
 */
declare function latToY(lat: number, zoom: number): number;