export declare class LruTtlCache<K, V> {
    private readonly maxSize;
    private readonly ttlMs;
    private readonly store;
    constructor(maxSize: number, ttlMs: number);
    get(key: K): V | undefined;
    set(key: K, value: V): void;
    delete(key: K): void;
    clear(): void;
    size(): number;
    keys(): IterableIterator<K>;
}
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