export interface LRUCacheConfig {
    maxSize?: number;
}
/**
 * BASIC (not optimal) implementation of the LRU cache
 */
export declare class LRUCache<K, V> {
    private config;
    private cache;
    private keys;
    private maxSize;
    constructor(config?: LRUCacheConfig);
    set(key: K, value: V): void;
    get(key: K): V | undefined;
    delete(key: K): void;
    has(key: K): boolean;
    size(): number;
    clear(): void;
    private updateKeysOrder;
}
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