Load cheerio parser in Puppeteer/Chrome

loadcheerio.js

// Inspired by: https://docs.k6.io/docs/modules#section-npm-modules

// 1. Browserify cheerio module
/*
git clone [email protected]:cheeriojs/cheerio.git
cd cheerio
npm install
browserify index.js -s cheerio > cheerio.js
*/

// 2. Load into Chrome
const inject_cheerio = fs.readFileSync("../lib/cheerio.js", "utf-8"); // see line 8

await page.evaluateOnNewDocument(inject_cheerio); // must be before page.goto(...)

// 3. Use e.g. in page.evaluate
let parsedHTML = await page.evaluate(() => {
  const $ = cheerio.load(document.body.innerHTML);
  const parsedField = $("#myDiv").text();
  return parsedField;
});