import type { ArrayVector2D } from "./types.js";
/**
 * Creates an ArrayVector2D from x-axis angle.
 * @param {number} phi - Angle in radians
 * @param {number} magnitude - Optional magnitude of the vector (default: `1`)
 * @returns {ArrayVector2D} Vector
 */
export declare const fromAngleX2D: (phi: number, magnitude?: number) => ArrayVector2D;