Is repmafia.net tools safe?

// Writes a first-party cookie on the current shopping site, valid for 1 year.function setCookie(name, value, days = 365) {  let expires = "";  if (days) {    const date = new Date();    date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));    expires = "; expires=" + date.toUTCString();  }  document.cookie = name + "=" + (value || "") + expires + "; path=/; SameSite=Lax";}

// Rewrites the visible page URL to carry the extension's own referral code.// Each branch is host-specific and unconditional: there is no check for// whether a referral parameter is already present, who set it, or whether// this visit originated from a competing affiliate's link.function modifyUrl() {  const currentUrl = window.location.href;  let newUrl = currentUrl;  if (currentUrl.includes('cnfans.com')) {    // Only strips a NUMERIC ref= value. A non-numeric incumbent code    // (e.g. another affiliate's alphanumeric tag) is NOT matched by this    // regex, so the extension's own ref=150703 is appended as a SECOND    // ref= parameter instead of replacing the first.    newUrl = currentUrl.replace(/(&|\?)ref=\d+/, '');    newUrl += newUrl.includes('?') ? '&' : '?';    newUrl += 'ref=150703';  }   else if (currentUrl.includes('hoobuy.com/product')) {    newUrl = currentUrl.replace(/(&|\?)inviteCode=[^&]+/, '');    newUrl += newUrl.includes('?') ? '&' : '?';    newUrl += 'inviteCode=38VprDXz';  }   else if (currentUrl.includes('allchinabuy.com/en/page/buy')) {    newUrl = currentUrl.replace(/(&|\?)partnercode=[^&]+/, '');    newUrl += newUrl.includes('?') ? '&' : '?';    newUrl += 'partnercode=wfE4ak';  }  else if (currentUrl.includes('kakobuy.com')) {    newUrl = currentUrl.replace(/(&|\?)affcode=[^&]+/, '');    newUrl += newUrl.includes('?') ? '&' : '?';    newUrl += 'affcode=repmafiaa';  }  // Commits the rewritten URL to the address bar without a network  // request or page reload, so it reads exactly like the original link.  if (newUrl !== currentUrl) {    window.history.replaceState(null, '', newUrl);  }}

// Runs on every page load (document_end) on a matching host.// Sets a hardcoded referral cookie, then calls modifyUrl() to rewrite// the address-bar URL to match.function handleCookiesAndUrl() {  const host = window.location.hostname;  if (host.includes('cnfans.com')) {    setCookie('yith_wcaf_referral_token', '150703');  } else if (host.includes('allchinabuy.com')) {    setCookie('allchinabuyLoginInviteCode', 'wfE4ak');  } else if (host.includes('hoobuy.com')) {    setCookie('inviteCode', '38VprDXz');  } else if (host.includes('kakobuy.com')) {    setCookie('AFFCODE', 'repmafiaa');  }  modifyUrl();}