/**
 * A minimal extension of Map that utilizes JSON.stringify for its keys.
 * This allows using objects as keys, provided they can be consistently stringified.
 * Note: The order of properties in an object affects its JSON string representation.
 * Ensure keys have a consistent property order or structure for reliable lookups.
 */
export declare class StringifyMap<K, V> extends Map<string, V> {
    /**
     * Creates a new StringifyMap instance.
     * @param entries An iterable of key-value pairs to initialize the map with. Keys will be stringified.
     */
    constructor(entries?: readonly (readonly [K, V])[] | null);
    /**
     * Returns the value associated with the key, or undefined if there is none.
     * The key is stringified before lookup.
     */
    get(key: K): V | undefined;
    /**
     * Sets the value for the key in the Map object. Returns the Map object.
     * The key is stringified before being stored.
     */
    set(key: K, value: V): this;
    /**
     * Returns a boolean indicating whether an element with the specified key exists or not.
     * The key is stringified before checking for existence.
     */
    has(key: K): boolean;
    /**
     * Removes the specified element from a Map object by key.
     * Returns true if an element in the Map object existed and has been removed, or false if the element does not exist.
     * The key is stringified before attempting deletion.
     */
    delete(key: K): boolean;
}
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