Límites de tasa

async function requestWithRetry(
  url: string,
  options: RequestInit,
  attempt = 0
): Promise<Response> {
  const res = await fetch(url, options)
  if (res.status !== 429 || attempt >= 5) return res

  const reset = Number(res.headers.get("x-ratelimit-reset")) || 0
  const waitMs = reset ? Math.max(0, reset * 1000 - Date.now()) : 2 ** attempt * 250
  await new Promise((r) => setTimeout(r, waitMs + Math.random() * 250))
  return requestWithRetry(url, options, attempt + 1)
}