export function validateSelector(selector: string): boolean {
  if (selector.trim().length === 0) {
    return false;
  }
  if (/supports/i.test(selector)) {
    return false;
  }
  if (/import/i.test(selector)) {
    return false;
  }
  if (/@(?!media\b)[a-z-]+/i.test(selector)) {
    return false;
  }
  if (/[{}]/.test(selector)) {
    return false;
  }

  return !/</.test(selector);
}