/**
 * A Map-like object that can kick out entries after a TTL or after a max number
 * of values are saved. This is implemented separately from the MemoryStore,
 * to separate the eviction logic from the "matching usable entries" logic.
 */
export default class ExpiringEntryMap<K, V> {
    private readonly store;
    private onItemEviction?;
    private cleanupJobTimer;
    private cleanupIterator;
    /**
     * @param opts.numItemsLimit If provided, the map will evict the least
     *  recently used item when the number of items stored exceeds this limit.
     *
     * @param opts.onItemEviction callback that is called *after* an item is
     *   removed from the cache (via manual deletion, expiration, or the map
     *   exceeding the numItemsLimit).
     */
    constructor(opts?: {
        numItemsLimit?: number | undefined;
        onItemEviction?: (evictedItem: V, evictedItemKey: K) => Promise<void>;
    });
    get(key: K): V | undefined;
    set(key: K, value: V, ttl: number): this;
    has(key: K): boolean;
    delete(key: K): boolean;
    close(): void;
    [Symbol.asyncDispose](): Promise<void>;
}
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