Function styleLoaded

testing/iframe.js:311–320

()

  // For this reason we poll until the style becomes available.
  // Sync case.
  const styleLoaded = () => {
    const sheets = doc.styleSheets;
    for (let i = 0; i < sheets.length; i++) {
      const sheet = sheets[i];
      if (sheet.ownerNode == style) {
        return true;
      }
    }
    return false;
  };

  if (styleLoaded()) {
    cb();