export interface HttpRetryOptions {
    maxAttempts?: number;
    baseDelayMs?: number;
    maxDelayMs?: number;
    maxRetryAfterMs?: number;
}
/**
 * Retry wrapper that honours `Retry-After` on rate-limit errors.
 *
 * - `KsefRateLimitError` (HTTP 429): waits `retryAfter * 1000` ms, clamped
 *   to `maxRetryAfterMs`. This is critical for `/invoices/query/metadata`
 *   (8 req/s, 16 req/min) where fixed exponential backoff would burst
 *   straight back into another 429.
 * - `KsefApiError` 5xx or undefined status (network error): exponential
 *   backoff with jitter.
 * - Anything else (4xx except 429, unknown errors): thrown immediately.
 */
export declare function withHttpRetry<T>(fn: () => Promise<T>, opts?: HttpRetryOptions): Promise<T>;
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