export declare class MemoryLruCache {
    private readonly budgetBytes;
    private readonly store;
    private currentBytes;
    constructor(budgetBytes: number);
    set(key: string, body: string): void;
    get(key: string): string | undefined;
    delete(key: string): void;
    size(): number;
    private evictIfOver;
    private evictAll;
}