import type { Color, Edge, EdgeList, Node, NodeId, NodeList } from '@linkurious/ogma';
import { LkEdgeData, LkNodeData } from '@linkurious/rest-client';
export declare const FORCE_LAYOUT_CONFIG: {
    steps: number;
    alignSiblings: boolean;
    charge: number;
    theta: number;
    duration: number;
    gravity: number;
    gpu: boolean;
};
export declare class OgmaTools {
    /**
     * Get the amount of hidden neighbors from a list of nodes
     *
     * @param nodes
     */
    static getHiddenNeighbors(nodes: NodeList<LkNodeData, LkEdgeData>): number;
    /**
     * Return the visible degree of a node without self connection (self edge)
     *
     * @param {Node} node
     * @return {number}
     */
    static getDegreeWithoutSelfConnection(node: Node<LkNodeData, LkEdgeData>): number;
    /**
     * Return true if the color tone is "bright"
     *
     * @param {string} color
     * @returns {boolean}
     */
    static isBright(color: Color): boolean;
    static isNode(item: Node<LkNodeData, LkEdgeData> | Edge<LkEdgeData, LkNodeData>): item is Node<LkNodeData, LkEdgeData>;
    static isNodeList(items: NodeList<LkNodeData, LkEdgeData> | EdgeList<LkEdgeData, LkNodeData>): items is NodeList<LkNodeData, LkEdgeData>;
    /**
     * Transform a nodelist to an array of node ids sorted by position in a chain and the length of the chain
     * A chain is: (a)-(b)-(c)-(d)
     */
    static topologicalSort(nodes: NodeList): {
        chain: NodeId[];
        numberOfChain: number;
    };
    static isStar(nodes: NodeList): false | Node<any, any>;
    /**
     * Return true if the group is collapsed
     */
    static isGroupCollapsed(node: Node): boolean;
    static setCollapsedGroupProperty(node: Node<LkNodeData>, collapsed: boolean): void;
}