/**
 * 3D point defined as [x, y, z].
 */
export type Point3D = [number, number, number];
/**
 * Adds two 3D points (vectors) component-wise.
 * @param a First point
 * @param b Second point
 * @returns The sum of the two points
 */
export declare function add(a: Point3D, b: Point3D): Point3D;
