import { LRU } from 'tiny-lru';
import type { ExpirableItem, MapInterface } from './lrutypes';
export type KeyvLruOptions = {
    max: number;
    ttl?: number;
    resetTtl?: boolean;
    serialize?: (data: any) => string;
    deserialize?: (data: string) => any;
};
/**
 * An adapter from tiny-lru to the MapInterface API.
 */
export declare class KeyvLru<T> implements MapInterface {
    cache: LRU<T>;
    private defaultTtl?;
    serialize?: (data: any) => string;
    deserialize?: (data: string) => any;
    opts?: {
        serialize?: (data: any) => string;
        deserialize?: (data: string) => any;
    };
    constructor(options?: KeyvLruOptions);
    clear(): void;
    delete(key: string): boolean;
    get(key: string): ExpirableItem<T> | undefined;
    set(key: string, value: T): 1 | 0;
}