text: const fs = require('fs');
  const os = require('os');
  const path = require('path');
  const mkdirp = require('mkdirp');
  const puppeteer = require('puppeteer');
  
  const DIR = path.join(os.tmpdir(), 'jest_puppeteer_global_setup');
  
  module.exports = async function () {
  	const browser = await puppeteer.launch();
  	// store the browser instance so we can teardown it later
  	// this global is only available in the teardown but not in TestEnvironments
  	global.__BROWSER_GLOBAL__ = browser;
  
  	// use the file system to expose the wsEndpoint for TestEnvironments
  	mkdirp.sync(DIR);
  	fs.writeFileSync(path.join(DIR, 'wsEndpoint'), browser.wsEndpoint());
  };
  