/**
 * A map type that accepts an arbitrary object as key.
 * {@link JSON.stringify} is used to create the actual key for the underlying map.
 * This can be helpful if value equality is desired.
 */
export declare class ObjectMap<K, V> {
    private readonly internal;
    private makeKey;
    /**
     * Sets a value for a given key.
     */
    set(key: K, v: V): void;
    /**
     * Return the value for the key.
     */
    get(key: K): V | undefined;
}