export declare class CommonsTwoKeyMap<KA, KB, V> {
    private internalMap;
    has(a: KA, b: KB): boolean;
    get(a: KA, b: KB): V | undefined;
    set(a: KA, b: KB, v: V): CommonsTwoKeyMap<KA, KB, V>;
    delete(a: KA, b: KB): boolean;
    clear(): void;
    get size(): number;
    get keys(): [KA, KB][];
    get values(): V[];
}