import { immerable } from 'immer';
import { Edge } from '../../entities';
import type { LayoutDirection, TreeEdgeData } from '../../types';
import type { TreeGraph } from '../tree-graph';
import type { TreeNode } from '.';
declare type Point = [number, number];
export declare class TreeEdge extends Edge {
    [immerable]: boolean;
    layoutDirection?: LayoutDirection;
    nodes?: TreeNode[];
    constructor(graph: TreeGraph, edgeData: TreeEdgeData, nodes?: TreeNode[]);
    get sourceNode(): TreeNode;
    get targetNode(): TreeNode;
    get isHorizontal(): boolean;
    get isReverseLayoutDirection(): boolean;
    get isTargetNodeLeftSide(): boolean;
    /**
     * 获取边的路径
     *
     * @returns 边路径
     */
    getPath: () => {
        d: string;
        textPoint: {
            x: number;
            y: number;
        };
        textTransform: string;
    };
    getControlPoints(startPoint: Point, endPoint: Point): Point[];
}
export {};
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