/// <reference types="node" />
import * as puppeteer from 'puppeteer';
import { ViewportDimensions, SerializedResponse } from '../crawler/types';
/**
 * Wraps Puppeteer's interface to Headless Chrome to expose high level rendering
 * APIs that are able to handle web components and PWAs.
 */
export declare class Renderer {
    private browser;
    constructor(browser: puppeteer.Browser);
    /** 执行内容的序列化提取 */
    serialize(requestUrl: string, isMobile: boolean): Promise<SerializedResponse>;
    /** 执行截屏 */
    screenshot(url: string, isMobile: boolean, dimensions: ViewportDimensions, options?: object): Promise<Buffer>;
}