/**
 * Cache class.
 */
export declare class Cache<T> {
    /**
     * Maximum number of values in cache, defaults to `100`.
     */
    max: number;
    _cache: Record<string, T>;
    _queue: string[];
    /**
     * Get cached value.
     */
    get(key: string): T | undefined;
    /**
     * Add value to the cache.
     */
    set(key: string, value: T): void;
    /**
     * Current size of the cache.
     */
    get size(): number;
}