Client ID (cid) dynamic override for Cloudflare ZARAZ GA3 & GA4 tools

inlineZARAZ.js

<script src="/jeeg.js"></script>
<script src="/cdn-cgi/zaraz/i.js" referrerpolicy="origin"></script>

// Include these lines in every webpage you want to collect pageview hits
// in its HTML, immediately before the </head> tag closes.

jeeg.js

    const storage = localStorage;

    if (!Math.imul) Math.imul = function(opA, opB) {
       opB |= 0;
       var result = (opA & 0x003fffff) * opB;
       if (opA & 0xffc00000) result += (opA & 0xffc00000) * opB|0;
       return result|0;
    };

    const cyrb53 = function(str, seed = 0) {
       let h1 = 0xdeadbeef ^ seed,
           h2 = 0x41c6ce57 ^ seed;
       for (let i = 0, ch; i < str.length; i++) {
           ch = str.charCodeAt(i);
           h1 = Math.imul(h1 ^ ch, 2654435761);
           h2 = Math.imul(h2 ^ ch, 1597334677);
       }
       h1 = Math.imul(h1 ^ h1 >>> 16, 2246822507) ^ Math.imul(h2 ^ h2 >>> 13, 3266489909);
       h2 = Math.imul(h2 ^ h2 >>> 16, 2246822507) ^ Math.imul(h1 ^ h1 >>> 13, 3266489909);
       return 4294967296 * (2097151 & h2) + (h1 >>> 0);
    };

    const generateId = () => {
		let creationTime   = new Date().getTime();
		let expiryTime     = creationTime + (30 * 24 * 3600 * 1000); // Change 30 to any number of days you want the CID to be valid.
		let CIDSource = window.location.host + ";" + navigator.userAgent + ";" + navigator.language + ";" + creationTime;

		if (window.localStorage) {
		    CIDhashed = localStorage.getItem('CID_HASHED');
		    CIDexpiry = localStorage.getItem('CID_EXPIRY');
		    if ((CIDhashed === null || CIDexpiry === null)
		       || (CIDhashed !== null && CIDexpiry !== null && CIDexpiry >= expiryTime)) {
		        localStorage.setItem('CID_HASHED', cyrb53(CIDSource).toString(16));
		        localStorage.setItem('CID_EXPIRY', expiryTime);
			}
			return storage.CID_HASHED;
		} else {
			return undefined;
		}
	};

    const getId = () => {
        if (!storage.CID_HASHED) {
            storage.CID_HASHED = generateId();
        }
        return storage.CID_HASHED;
    };

    const getExpiry = () => {
        if (!storage.CID_EXPIRY) {
            storage.CID_HASHED = generateId();
        }
        return storage.CID_EXPIRY;
    };

function getCookie(cname) {
  let name = cname + "=";
  let decodedCookie = decodeURIComponent(document.cookie);
  let ca = decodedCookie.split(';');
  for(let i = 0; i <ca.length; i++) {
    let c = ca[i];
    while (c.charAt(0) == ' ') {
      c = c.substring(1);
    }
    if (c.indexOf(name) == 0) {
      console.log(c.substring(name.length, c.length));
	  return c.substring(name.length, c.length);
    }
  }
}

function setCookie(cname, cvalue, cexpiry) {
  const d = new Date();
  d.setTime(cexpiry);
  let expires = "expires="+ d.toUTCString();
  document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/" + ";domain=.YOURDOMAIN"; // replace YOURDOMAIN your domain
}

function sleep(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}

async function GACookie() {
    for (let i = 0; i < 5; i++) {
        console.log(`Waiting ${i} seconds...`);
        console.log(getCookie('_ga'));
        setCookie('_ga', getId(), getExpiry()); // comment this line if NOT using GA3
        console.log(getCookie('_ga4'));
        setCookie('_ga4', getId(), getExpiry()); // comment this line if NOT using GA4
        await sleep(i * 1000);
    }
    console.log('Done');
}

GACookie();