/**
 * Wrap any limiter with a violation-count ban policy. When a caller
 * triggers `threshold` denials within `trackingWindow`, we bump them to
 * a hard ban for `banDuration` — subsequent `.check()` calls short-circuit
 * to denied without touching the base limiter.
 *
 * Sits nicely on top of a stricter-than-you-need limiter: the base
 * limiter catches ordinary abuse, `withBan` catches persistent abuse
 * cheaply (a single `store.get` per request while in the ban window,
 * no HMAC / no algorithm work).
 *
 *   const limiter = rateLimit.withBan(
 *     rateLimit.sliding({ requests: 20, window: '1m', store }),
 *     { store, threshold: 5, banDuration: '1h' },
 *   )
 *
 * State is written with the prefixes `bs:v:<key>` (violation counter,
 * TTL = trackingWindow) and `bs:b:<key>` (ban marker, TTL = banDuration).
 * You can share the base limiter's store or provide a dedicated one.
 *
 * @param {import('./index.js').Limiter} limiter
 * @param {{
 *   store: import('./index.js').RateLimitStore,
 *   threshold: number,
 *   banDuration: string | number,
 *   trackingWindow?: string | number,
 * }} options
 * @returns {import('./index.js').Limiter}
 */
export function withBan(limiter: import("./index.js").Limiter, options: {
    store: import("./index.js").RateLimitStore;
    threshold: number;
    banDuration: string | number;
    trackingWindow?: string | number;
}): import("./index.js").Limiter;