twitter.widget.fix.js

const modifier = async () => {
  const sleep = msec => new Promise(resolve => {
    if (document.readyState === 'complete') {
      setTimeout(resolve, msec);
    } else {
      document.addEventListener('readystatechange', () => {
        if (document.readyState === 'complete') {
          setTimeout(resolve, msec);
        }
      }, { capture: false, passive: true });
    }
  });
  await sleep(100);
  document.querySelectorAll('iframe[id^="twitter-widget-"]').forEach(elem => {
    elem.addEventListener('load', () => {
      elem.style.removeProperty('height');
    }, { once: true, passive: true });
    elem.style.removeProperty('height');
  });
};

if (document.readyState === 'loading') {
  document.addEventListener('DOMContentLoaded', () => {
    modifier();
  }, { passive: true });
} else {
  console.log(`already dispatched DOMContentLoaded`);
  modifier();
}