text: import DOMPurify from 'dompurify';
  
  var Markdown = require('markdown-it')({
    html: true,
    linkify: true,
    typographer: true,
    breaks: true,
  });
  
  import markdownItMermaid from "@wekanteam/markdown-it-mermaid";
  
  // Static URL Scheme Listing
  var urlschemes = [
    "aodroplink",
    "thunderlink",
    "cbthunderlink",
    "onenote",
    "file",
    "abasurl",
    "conisio",
    "mailspring"
  ];
  
  
  
  // Better would be a field in the admin backend to set this dynamically
  // instead of putting all known or wanted url schemes here hard into code
  // but i was not able to access those settings
  // var urlschemes = currentSetting.automaticLinkedUrlSchemes.split('\n');
  
  
  
  // put all url schemes into the linkify configuration to automatically make it clickable
  for(var i=0; i<urlschemes.length;i++){
    Markdown.linkify.add(urlschemes[i]+":",'http:');
  }
  
  var emoji = require('markdown-it-emoji');
  Markdown.use(emoji);
  Markdown.use(markdownItMermaid);
  
  if (Package.ui) {
    const Template = Package.templating.Template;
    const UI = Package.ui.UI;
    const HTML = Package.htmljs.HTML;
    const Blaze = Package.blaze.Blaze; // implied by `ui`
  
    UI.registerHelper('markdown', new Template('markdown', function () {
      const self = this;
      let text = '';
      if (self.templateContentBlock) {
        text = Blaze._toText(self.templateContentBlock, HTML.TEXTMODE.STRING);
      }
  
      return HTML.Raw(DOMPurify.sanitize(Markdown.render(text), {ALLOW_UNKNOWN_PROTOCOLS: true}));
    }));
  }
  