import type { dia } from '@joint/core';
export interface CellBase {
    readonly id?: dia.Cell.ID;
}
/**
 * CellMap is a custom Map implementation that extends the native Map class.
 * It provides additional utility methods for working with working with nodes & edges.
 * @group Utils
 */
export declare class CellMap<V extends CellBase> extends Map<dia.Cell.ID, V> {
    map<Item = V>(selector: (item: V) => Item): Item[];
    filter(predicate: (item: V) => boolean): V[];
    toJSON(): string;
}