JSFiddle - React, Tailwind, and code Playground

JavaScript

var fields = [];
var observer = new MutationObserver(function(mutations){
  for (var i=0; i < mutations.length; i++){
    for (var j=0; j < mutations[i].addedNodes.length; j++){
      checkNode(mutations[i].addedNodes[j]);
    }
  }
});

observer.observe(document.documentElement, {
  childList: true,
  subtree: true
});

var checkNode = function(addedNode) {
  if (addedNode.nodeType === 1){
    if (addedNode.matches('.task-suite')){
        fields.push(addedNode);
    }
  }
}