import type { ArrayVector3D } from "./types.js";
/**
 * Rotates a 3D vector around the x-axis.
 * @param {ArrayVector3D} xyz - Vector as `[x, y, z]`
 * @param {number} phi - Angle of rotation in radians
 * @param {ArrayVector3D} axis - Rotation axis point (default: `[0, 0, 0]`)
 * @returns {ArrayVector3D} The rotated vector
 */
export declare const rotateX3D: (xyz: ArrayVector3D, phi: number, axis?: ArrayVector3D) => ArrayVector3D;