import urlCacheInstance from 'url-data-cache';
  const urlDataCache = urlCacheInstance('my-app');

  // or

  const urlDataCache = require('url-data-cache')('my-app');

  // then


  // get from cache (also delete expired)
  const cachedData = urlDataCache.get(url);
  if(cachedData) return resolve(cachedData);

  // put to cache
  urlDataCache.put(url, htmlData, '1 hour');