@oddbird/css-anchor-positioning/src/index-wpt.ts

Polyfill for the proposed CSS anchor positioning spec

import { polyfill } from './polyfill.js';

// Used by the WPT test harness to delay test assertions
// and give the polyfill time to apply changes
window.CHECK_LAYOUT_DELAY = true;

// apply polyfill
if (document.readyState !== 'complete') {
  window.addEventListener('load', () => {
    polyfill(true);
  });
} else {
  polyfill(true);
}