import type { ExprValue } from '../types.js';
/**
 * Function that converts geometry data to GeoJSON format.
 * @param expr The input expression.
 */
export declare function geojson(expr: ExprValue): import("../index.js").FunctionNode;
/**
 * Function that returns a spatial x position (using ST_X).
 * @param expr The input expression.
 */
export declare function x(expr: ExprValue): import("../index.js").FunctionNode;
/**
 * Function that returns a spatial y position (using ST_Y).
 * @param expr The input expression.
 */
export declare function y(expr: ExprValue): import("../index.js").FunctionNode;
/**
 * Function that returns the centroid point for geometry data.
 * @param expr The input expression.
 */
export declare function centroid(expr: ExprValue): import("../index.js").FunctionNode;
/**
 * Function that returns the centroid x-coordinate for geometry data.
 * @param expr The input expression.
 */
export declare function centroidX(expr: ExprValue): import("../index.js").FunctionNode;
/**
 * Function that returns yhe centroid y-coordinate for geometry data.
 * @param expr The input expression.
 */
export declare function centroidY(expr: ExprValue): import("../index.js").FunctionNode;
//# sourceMappingURL=spatial.d.ts.map