code: function makeAbsoluteUrls(html, siteUrl, itemUrl, options = {assetsOnly: false}) {
      html = html || '';
      const htmlContent = cheerio.load(html, {decodeEntities: false});
      const staticImageUrlPrefixRegex = new RegExp(STATIC_IMAGE_URL_PREFIX);
  
      // convert relative resource urls to absolute
      ['href', 'src'].forEach(function forEach(attributeName) {
          htmlContent('[' + attributeName + ']').each(function each(ix, el) {
              el = htmlContent(el);
  
              let attributeValue = el.attr(attributeName);
  
              // if URL is absolute move on to the next element
              try {
                  const parsed = url.parse(attributeValue);
  
                  if (parsed.protocol) {
                      return;
                  }
  
                  // Do not convert protocol relative URLs
                  if (attributeValue.lastIndexOf('//', 0) === 0) {
                      return;
                  }
              } catch (e) {
                  return;
              }
  
              // CASE: don't convert internal links
              if (attributeValue[0] === '#') {
                  return;
              }
  
              if (options.assetsOnly && !attributeValue.match(staticImageUrlPrefixRegex)) {
                  return;
              }
  
              // compose an absolute URL
              // if the relative URL begins with a '/' use the blog URL (including sub-directory)
              // as the base URL, otherwise use the post's URL.
              const baseUrl = attributeValue[0] === '/' ? siteUrl : itemUrl;
              attributeValue = urlJoin(baseUrl, attributeValue);
              el.attr(attributeName, attributeValue);
          });
      });
  
      return htmlContent;
  }
docs: Make absolute URLs
  @param {string} html
  @param {string} siteUrl (blog URL)
  @param {string} itemUrl (URL of current context)
  @returns {object} htmlContent
  @description Takes html, blog url and item url and converts relative url into
  absolute urls. Returns an object. The html string can be accessed by calling `html()` on
  the variable that takes the result of this function