Censor carbon.now.sh exported SVG

censorCarbonSvg.js

function textNodesUnder(el){
  var n, a=[], walk=document.createTreeWalker(el,NodeFilter.SHOW_TEXT,null,false);
  while(n=walk.nextNode()) a.push(n);
  return a;
}

for (let node of textNodesUnder(document.documentElement)) {
  node.nodeValue = node.nodeValue.replace(/[^\s]/g, '█');
}