pull out stealth into util

epic-games.js

@@ -1,6 +1,8 @@
 //@ts-check
 const { chromium } = require('playwright'); // stealth plugin needs no outdated playwright-extra
 const path = require('path');
+const { stealth } = require('./util.js');
+
 const debug = process.env.PWDEBUG == '1'; // runs non-headless and opens https://playwright.dev/docs/inspector
 
 const URL_LOGIN = 'https://www.epicgames.com/login';
@@ -25,39 +27,10 @@ const TIMEOUT = 20 * 1000; // 20s, default is 30s
   // Without stealth plugin, the website shows an hcaptcha on login with username/password and in the last step of claiming a game. It may have other heuristics like unsuccessful logins as well. After <6h (TBD) it resets to no captcha again. Getting a new IP also resets.
   // stealth with playwright: https://github.com/berstend/puppeteer-extra/issues/454#issuecomment-917437212
   // https://github.com/berstend/puppeteer-extra/tree/master/packages/puppeteer-extra-plugin-stealth/evasions
-  const enabledEvasions = [
-    'chrome.app',
-    'chrome.csi',
-    'chrome.loadTimes',
-    'chrome.runtime',
-    // 'defaultArgs',
-    'iframe.contentWindow',
-    'media.codecs',
-    'navigator.hardwareConcurrency',
-    'navigator.languages',
-    'navigator.permissions',
-    'navigator.plugins',
-    // 'navigator.vendor',
-    'navigator.webdriver',
-    'sourceurl',
-    // 'user-agent-override', // doesn't work since playwright has no page.browser()
-    'webgl.vendor',
-    'window.outerdimensions'
-  ];
-  const evasions = enabledEvasions.map(e => require(`puppeteer-extra-plugin-stealth/evasions/${e}`));
-  const stealth = {
-    callbacks: [],
-    async evaluateOnNewDocument(...args) {
-      this.callbacks.push({ cb: args[0], a: args[1] })
-    }
-  }
-  evasions.forEach(e => e().onPageCreated(stealth));
-  for (let evasion of stealth.callbacks) {
-    await context.addInitScript(evasion.cb, evasion.a);
-  }
-  // end stealth setup
+  await stealth(context);
 
   if (!debug) context.setDefaultTimeout(TIMEOUT);
+
   const page = context.pages().length ? context.pages()[0] : await context.newPage(); // should always exist
   console.log('userAgent:', await page.evaluate(() => navigator.userAgent));