export declare class LruCache<T> {
    private _values;
    private max;
    constructor(max?: number);
    has(key: string): boolean;
    get(key: string): T | undefined;
    set(key: string, value: T): void;
    delete(key: string): boolean;
    clear(): void;
    size(): number;
    values(): IterableIterator<T>;
    keys(): string[];
}