docs: function setHeaders (headers, ratelimit, XHeaders = false) {
    if (XHeaders) {
      headers['X-Rate-Limit-Limit'] = ratelimit.limit
      headers['X-Rate-Limit-Remaining'] = ratelimit.remaining > 0 ? ratelimit.remaining : 0
      headers['X-Rate-Limit-Reset'] = ratelimit.reset
    }
  
    // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Retry-After
    headers['Retry-After'] = Math.ceil(ratelimit.reset / 1000)
  }