export interface Cache<K, V> {
    get(key: K): V | undefined;
    set(key: K, value: V): void;
}
export interface Cache2<K1, K2, V> {
    get(from: K1, to: K2): V | undefined;
    set(from: K1, to: K2, value: V): void;
}
/**
 * A `RecursiveMap` acts as a hierarchical cache, allowing values to be retrieved from
 * either the current map or a specified parent cache if the value is not found locally.
 */
export declare class RecursiveMap<K, V> implements Cache<K, V> {
    private map;
    private parent?;
    constructor(parent?: Cache<K, V>);
    get(key: K): V | undefined;
    set(key: K, value: V): void;
}