chrome-headlessHow to take page screenshot with delay using Chrome Remote Interface

const chromeLauncher = require('chrome-launcher');
const CDP = require('chrome-remote-interface');
const fs = require('fs');

chromeLauncher.launch({ port: 9222, chromeFlags: [ '--window-size=400,800', '--headless' ] }).then(function(chrome) {
  CDP(async (client) => {
    const {Page} = client;
    await Page.enable();
    await Page.navigate({url: 'https://github.com'});
    await Page.loadEventFired();
    
    await new Promise(r => setTimeout(r, 6000));
    
    const {data} = await Page.captureScreenshot();
    fs.writeFileSync('screen.png', Buffer.from(data, 'base64'));
    await client.close();
    chrome.kill();
  });
});ctrl + c
github