Extract relevant information for a Chrome extension – Javascript

I am trying to build a chrome extension that aggregates information from a bunch of sites when the user visits a site A

async function fetchHTML(url) {
    const response = await fetch(proxyUrl + url);
    const html = await response.text();
    console.log(html);
    return html;
  }

  // Function to extract the element - total violations from the HTML content
  function extractTotalViolations(html) {
    const parser = new DOMParser();
    const doc = parser.parseFromString(html, "text/html");
    const totalViolations = doc.querySelector(".total-violations").textContent;
    return totalViolations;
  }
  
  // The URL of the page we want to scrape
  const url = "https://whoownswhat.justfix.org/en/address/MANHATTAN/610/EAST%2020%20STREET";
  
  // Fetch the HTML content of the page and extract the total violations
  fetchHTML(url).then(html => {
    const totalViolations = extractTotalViolations(html);
    console.log(totalViolations);
  });

When I print totalViolations, I get NULL. So I printed the HTML that was fetched & I realized that I am getting some javascript code that doesn’t look anything like the HTML code I see on the website directly. I suspect the website is using some javascript masking or maybe I am not fetching the HTML correctly

<script>
!function(e){function t(t){for(var n,l,i=t[0],f=t[1],a=t[2],p=0,s=[];p<i.length;p++)l=i[p],Object.prototype.hasOwnProperty.call(o,l)&&o[l]&&s.push(o[l][0]),o[l]=0;for(n in f)Object.prototype.hasOwnProperty.call(f,n)&&(e[n]=f[n]);for(c&&c(t);s.length;)s.shift()();return u.push.apply(u,a||[]),r()}function r(){for(var e,t=0;t<u.length;t++){for(var r=u[t],n=!0,i=1;i<r.length;i++){var f=r[i];0!==o[f]&&(n=!1)}n&&(u.splice(t--,1),e=l(l.s=r[0]))}return e}var n={},o={1:0},u=[];function l(t){if(n[t])return n[t].exports;var r=n[t]={i:t,l:!1,exports:{}};return e[t].call(r.exports,r,r.exports,l),r.l=!0,r.exports}l.m=e,l.c=n,l.d=function(e,t,r){l.o(e,t)||Object.defineProperty(e,t,{enumerable:!0,get:r})},l.r=function(e){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",
</script>

My question is how can I extract the HTMl correctly so that I can parse the DOM & get all the information from this site that I want to put on the extension. Thanks