Interface KVComponent<K, VALUE>

interface KVComponent<K extends any[], VALUE> {
    get size(): number;
    clear?(): void;
    delete(...keys: K): boolean;
    get(...keys: K): VALUE | undefined;
    getOrCreate(...keysAndCreator: [...K[], VALUE]): VALUE;
    getOrDefault(...keysAndDefault: [...K[], VALUE]): VALUE;
    has(...keys: K): boolean;
    isEmpty(): boolean;
    kvEntries(): IterableIterator<[K, VALUE]>;
    kvKeys(): IterableIterator<K>;
    kvValues(): IterableIterator<VALUE>;
    set(...keysAndValue: [...K[], VALUE]): void;
    toString(): string;
}