text: const { parse } = require('url');
  
  const visit = import('unist-util-visit').then((m) => m.visit);
  
  const internalUrls = ['sdk.apify.com'];
  
  /**
   * @param {import('url').UrlWithStringQuery} href
   */
  function isInternal(href) {
      return internalUrls.some(
          (internalUrl) => href.host === internalUrl
              || (!href.protocol && !href.host && (href.pathname || href.hash)),
      );
  }
  
  /**
   * @type {import('unified').Plugin}
   */
  exports.externalLinkProcessor = () => {
      return async (tree) => {
          (await visit)(tree, 'element', (node) => {
              if (
                  node.tagName === 'a'
                  && node.properties
                  && typeof node.properties.href === 'string'
              ) {
                  const href = parse(node.properties.href);
  
                  if (!isInternal(href)) {
                      node.properties.target = '_blank';
                      node.properties.rel = 'noopener';
                  } else {
                      node.properties.target = null;
                      node.properties.rel = null;
                  }
              }
          });
      };
  };
  