import type { ArrayVector3D } from "./types.js";
/**
 * Checks if a 3D vector has NaN components.
 * @param {ArrayVector3D} xyz - Vector as `[x, y, z]`
 * @returns {boolean} `true` if the vector has `NaN` components, `false` otherwise.
 */
export declare const isNaN3D: (xyz: ArrayVector3D) => boolean;