Commonmark.js: Problem with bare hyperlinks enclosed in angle brackets

I try to use Commonmark.js on a local HTML page. And there is a problem with bare hyperlinks enclosed in angle brackets:

    

    **bold** and italic

    - 
    - 

    

    
    
    window.onload = function() {
      var markdown = document.querySelector('#input').innerHTML;
      var reader = new commonmark.Parser();
      var writer = new commonmark.HtmlRenderer();
      var parsed = reader.parse(markdown);
      var result = writer.render(parsed);
      document.querySelector('body').innerHTML = result;
    }
    

 Why is that? How to prevent bare hyperlinks enclosed in angle brackets to be treated as tags, and at the same time to keep ability to parse HTML (that is `italic` should be rendered as *italic*)?

 I tried the Commonmark demo and it doesn’t have this problem.