Using Puppeter with MapView

index.js

const puppeteer = require('puppeteer');

const viewport = {
  width: 1920,
  height: 1080
}

async function testPage(name, url) {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();

  await page.setViewport(viewport);
  await page.setCacheEnabled(false);
  await page.goto(url);
  
  let MapViewHandle;
  let viewInstances;

  try {
    // Get the MapView prototype
    MapViewHandle = await page.evaluateHandle(`require("esri/views/MapView").prototype`);
    // Query of all the instances of MapViews
    viewInstances = await page.queryObjects(MapViewHandle);

    await page.waitFor(
      views => views.every(view => {
        return view.ready && view.stationary && !view.updating
      }),
      {
        timeout: 120000
      },
      viewInstances
    );
  }
  catch(error) {
    console.error(`Skipping "${name}"`, error);
    await browser.close();
    return null;
  }

  await page.screenshot({path: `screenshots/${name}.png`});
  
  MapViewHandle && await MapViewHandle.dispose();
  viewInstances && await viewInstances.dispose();
  await browser.close();
}

(async () => {
  await testPage('layers-csv-projection', `https://developers.arcgis.com/javascript/latest/sample-code/layers-csv-projection/live/index.html`);
})();