'use strict';

const puppeteer = require('puppeteer');

(async () => {
       const browser = await puppeteer.launch();

       try {
           const page = await browser.newPage();
           await page.goto('https://example.com');

           const selector = 'body > div:first-child';
           await page.waitForSelector(selector);
           const element = await page.$(selector);

           await element.screenshot({
               path: 'example.com.png',
           });
       } catch (e) {
           console.log(e)
       } finally {
           await browser.close();
       }
})();