خطاها و روش بازیابی

{
  "error": {
    "code": "api_credits_exhausted",
    "message": "Your monthly API credits are exhausted...",
    "details": {
      "period": "2026-08",
      "used": 1000,
      "limit": 1000,
      "cost": 12,
      "api_credit_balance": 4
    }
  }
}

const response = await fetch(url, options)
const payload = await response.json().catch(() => ({}))

if (!response.ok) {
  const error = payload.error
  const code = typeof error === 'object'
    ? error.code
    : 'invalid_http_request'
  const message = typeof error === 'object'
    ? error.message
    : error

  if (response.status === 429) {
    const wait = Number(response.headers.get('Retry-After') ?? 1)
    // retry with exponential backoff
  }

  throw new Error(`KujiChat API [${code}]: ${message}`)
}