/**
 * 将HTML实体字符转换为UTF-16字符串
 * @description 处理形如〹的HTML实体字符，将其转换为对应的UTF-16字符
 * @param {string} str - 包含HTML实体字符的输入字符串
 * @returns {string} 转换后的UTF-16字符串
 * @throws {TypeError} 当输入参数不是字符串类型时抛出
 * @example
 * entitiestoUtf16('〹');
 * // => '𠄩'
 */
declare function entitiestoUtf16(str: string): string;
export default entitiestoUtf16;