screenshot-and-browser-logs.js

const colors = require('colors/safe');
const path = require('path');
const fs = require('fs');

function captureLogs(filename) {
  const output = path.join(BROWSER_LOGS_DIR, filename);
  console.log(colors.red.bold('📜 capturing logs to'), output);
  return browser.manage().logs().get('browser').then(browserLog => {
    fs.writeFileSync(output, JSON.stringify(browserLog));
  });
}

function writeScreenshot(data, filename) {
  const output = path.join(SCREENSHOT_DIR, filename);
  console.log(colors.red.bold('📷 screenshotting to'), output);
  const stream = fs.createWriteStream(output);
  stream.write(Buffer.from(data, 'base64'));
  stream.end();
}

function takeScreenshot(screenshotName) {
  return browser.takeScreenshot()
  .then(png => writeScreenshot(png, screenshotName));
}