Examples for using these:

  // fetch survey so we can save CFDN labels (rather than value)
  let thisSurvey = await fetch(`https://app.surveystack.io/api/surveys/62d02e2242548e0001266049`)
  .then(data => data.json())
  ;
  let resources = Object.flattenAll(thisSurvey.resources);
  let revision = Object.flattenAll(thisSurvey.revisions[thisSurvey.revisions.length - 1]);
  // only keep .value and .label to minimize search effort
  Object.keys(revision).forEach((key) => {
    if (!/(\.source\.([0-9]+)\.(label|value))+/g.test(key)) delete revision[key];
  })
  console.log('resources');
  console.log(resources);
  console.log('revision');
  console.log(revision);

Updated (/un)flatten(/all) so they are not Object.<> but are direct functions. Better because we shouldn't mess with Object and it also works better in the utils.unstable class.