tree.js

function searchAndInsert(node, trigger, name) {
  var results = [];
  if (node == {})
    return false;
  for (child in node) {
    for (t of trigger) {
      console.log('child', child, 'trigger', t);
      if (child == t && !child[name]) {
        //console.log('node', node, 'child(trigger)', node[child],'name', child[name])
        node[child][name] = {};
        return true;
      } else
        results.push(searchAndInsert(node[child], t, name));
    }
  }
  return results.some(el=>el);
}
//var a = {
//  b: {
//    c: {},
//    d: {}
//  },
//  e: {
//    f: {}
//  }
//}
//searchAndInsert(a,['c','f'],'fu');


function master(root, trigger, name) {
  var asigned = searchAndInsert(root, trigger, name);
  if (!asigned)
    root[trigger][name] = {};
}

var tree = [].concat(tagManagerSettings.events, tagManagerSettings.data).map(el=>{
  console.log(el.trigger);
  var t = el.trigger;
  el.trigger = typeof t == 'object' ? t.map(el=>el.replace(/^dataFilled./, '')) : t;
  return el;
}
).reduce((acum,curr)=>{
  searchAndInsert(acum, curr.trigger, curr.name);
  return acum;
}
, {
  preloader: {},
  ready: {},
  formStep: {}
});

console.log(JSON.stringify(tree, null, 2));