var href = location.href;

function main() {
  document.write(`<frameset cols='*'>\n<frame id='inner' src='${href}'/></frameset>`)

  let frame = document.getElementById('inner');
  frame.onload = function () {
    let {
      contentWindow: window,
      contentDocument: document
    } = frame;
    window.setInterval(() => {
      try {
        document.querySelector('a[action-type="cancel_follow_single"]').click();
        document.querySelector('a[node-type="ok"]').click();
      } catch (err) {
        // do nothing
      }

    }, 2000)
  }
  document.close();
}

main();

setInterval(main, 1000 * 40);