export function ensureKeyframes() {
  if (!(window as any).__rough_notation_keyframe_styles) {
    const style = (window as any).__rough_notation_keyframe_styles = document.createElement('style');
    style.textContent = `
    @keyframes rough-notation-dash {
      to {
        stroke-dashoffset: 0;
      }
    }
    `;
    document.head.appendChild(style);
  }
}