Function isProviderRateLimitError

packages/kosong/src/errors.ts:256–264

(error: unknown)

}

export function isProviderRateLimitError(error: unknown): boolean {
  if (error instanceof APIProviderRateLimitError) return true;

  const statusCode = getStatusCode(error);
  if (statusCode !== undefined) return statusCode === 429;

  const lowerMessage = errorMessage(error).toLowerCase();
  return PROVIDER_RATE_LIMIT_MESSAGE_PATTERNS.some((pattern) => pattern.test(lowerMessage));
}

function getStatusCode(error: unknown): number | undefined {
  if (typeof error !== 'object' || error === null) return undefined;