/**
 * Like Map, but serializes to JSON as an object.
 *
 * Fixes the "issue" of stock Map being json-serialized as `{}`.
 *
 * @experimental
 */
export declare class Map2<K = any, V = any> extends Map<K, V> {
    /**
     * Convenience way to create Map2 from object.
     */
    static of<V>(obj: Record<any, V>): Map2<string, V>;
    /**
     * Allows to set multiple key-value pairs at once.
     */
    setMany(obj: Record<any, V>): this;
    toObject(): Record<string, V>;
    toJSON(): Record<string, V>;
    toString(): string;
}