Show HN: Disabling View Source in Firefox and Edge

  <script>
    document.currentScript.remove();
    setTimeout(function() {
      // no rights reserved (BSD0) by Jeremy Banks <_@jeremy.ca>

      const html = document.documentElement.outerHTML;

      document.open('text/plain');
      document.write('view source disabled');
      document.close();

      document.documentElement.innerHTML = html;
    });
  </script>

But if I then manually edit that in the location bar to "view-source:https://no-source.github.io/" I can view the source as expected.