/**
 * Simple Map with max size eviction (LRU-like: evicts oldest entry when full).
 * Optionally supports TTL-based expiry.
 */
export declare class TtlMap<K, V> {
    private map;
    private maxSize;
    private ttlMs;
    constructor(opts?: {
        maxSize?: number;
        ttlMs?: number;
    });
    get(key: K): V | undefined;
    set(key: K, value: V): void;
    has(key: K): boolean;
    delete(key: K): boolean;
    get size(): number;
    clear(): void;
}