/// <reference types="node" />
/**
 * html转换为pdf
 * @param html 需转换的html内容
 * @param orientation 版式，横版、竖版
 * @param attachment 文件名称-可选参数
 * @example html2pdf(html, orientation, attachment, rootpath, width, height);
 */
export default function html2pdf(html: string, orientation: 'portrait' | 'landscape', attachment?: string, rootpath?: string, width?: string, height?: string): Promise<{
    attachment: string;
    buff: Buffer;
    content_type: string;
} | {
    buff: Buffer;
    content_type: string;
    attachment?: undefined;
}>;