export async function retryAsync<T>(
  fn: () => Promise<T>,
  attempts = 3,
  initialDelayMs = 300,
): Promise<T> {
  let lastErr: unknown;
  for (let i = 0; i < attempts; i += 1) {
    try {
      return await fn();
    } catch (err) {
      lastErr = err;
      if (i === attempts - 1) break;
      const delay = initialDelayMs * 2 ** i;
      await new Promise((r) => setTimeout(r, delay));
    }
  }
  throw lastErr;
}