Error Handling

{
  "type": "https://api.sumvin.com/errors/wal-404-001",
  "title": "Wallet Not Found",
  "status": 404,
  "detail": "No wallet found with ID 12345",
  "instance": "/v0/wallets/12345",
  "error_code": "WAL-404-001",
  "trace_id": "abc-123-def"
}

async function apiCall(url: string, options: RequestInit, maxRetries = 3) {
  for (let attempt = 0; attempt <= maxRetries; attempt++) {
    const response = await fetch(url, options);

    if (response.ok || response.status === 208) return response;

    if (response.status === 429) {
      const retryAfter = parseInt(response.headers.get("Retry-After") ?? "30");
      await new Promise((r) => setTimeout(r, retryAfter * 1000));
      continue;
    }

    if (response.status >= 500 && attempt < maxRetries) {
      await new Promise((r) => setTimeout(r, Math.pow(2, attempt) * 1000));
      continue;
    }

    const error = await response.json();
    throw new ApiError(error.error_code, error.detail, error.trace_id);
  }
}