/**
 * 动态加载 script
 *
 * @param {string} src - 要加载的脚本URL
 * @param {(err: Error | null, script?: HTMLScriptElement) => void} [callback] - 加载完成后的回调函数
 * @returns {void}
 * @example
 *
 * dynamicLoadScript('https://cdn.jsdelivr.net/npm/tinymce-all-in-one@4.9.3/tinymce.min.js', (err, script) => {
 *   if (err) {
 *     console.error('加载失败', err);
 *   } else {
 *     console.log('加载成功', script);
 *   }
 * });
 * // => 加载成功 <script id="https://cdn.jsdelivr.net/npm/tinymce-all-in-one@4.9.3/tinymce.min.js" src="https://cdn.jsdelivr.net/npm/tinymce-all-in-one@4.9.3/tinymce.min.js"></script>
 */
export declare function dynamicLoadScript(src: string, callback?: (err: Error | null, script?: HTMLScriptElement) => void): void;