export type SanitizeMemoStats = {
    hits: number;
    misses: number;
    evictions: number;
    entries: number;
    cacheBytes: number;
    computeMsTotal: number;
};
/**
 * Generic byte-bounded LRU memo for a pure `(key: string) => string` function.
 * - Hit: move-to-end (true LRU recency).
 * - Miss: compute (timed), insert, then evict oldest until total bytes <= budget.
 * - Oversize (single entry > budget): compute but do not cache (no thrash).
 * - Disabled: bypass the cache; still record misses/computeMs (measurable baseline).
 * Byte size is approximated by UTF-16 length (key.length + value.length).
 */
export declare function makeByteBoundedMemo(fn: (key: string) => string, opts: {
    maxBytes: number;
    enabled: () => boolean;
}): {
    call: (key: string) => string;
    stats: () => SanitizeMemoStats;
};