Move takeScreenshot() function into a test helper file

test/integration/page.test.js

@@ -1,9 +1,7 @@
 const { Builder } = require('selenium-webdriver'),
   chrome = require('selenium-webdriver/chrome.js'),
   chromeOptions = new chrome.Options(),
-  { expect, it } = require('@jest/globals'),
-  { mkdir, writeFile } = require('node:fs/promises'),
-  path = require('path');
+  { expect, it } = require('@jest/globals');
 
 chromeOptions.addArguments('--headless', '--disable-gpu', '--no-sandbox');
 chromeOptions.enableBidi();
@@ -22,11 +20,3 @@ it('loads the page', async () => {
 afterEach(async () => {
   await driver.quit();
 });
-
-async function takeScreenshot(driver) {
-  const dir = './test/screenshots';
-  const fileName = path.relative(process.cwd(), __filename) + ' "' + expect.getState().currentTestName + `" ${new Date().toISOString()}.png`;
-  const image = await driver.takeScreenshot();
-  await mkdir(dir, { recursive: true });
-  await writeFile(`${dir}/${fileName.replaceAll('/', '-')}`, image, 'base64');
-}