import type { ToJSON } from '@rimbu/common';
import { type StreamSource } from '@rimbu/stream';
import type { GraphTypesContextImpl } from '@rimbu/graph/custom';
import type { GraphBase, WithGraphValues } from '../../common/index.cjs';
import { GraphEmptyBase } from '../../common/index.cjs';
export declare class GraphEmpty<N, V, Tp extends GraphTypesContextImpl, TpG extends WithGraphValues<Tp, N, V> = WithGraphValues<Tp, N, V>> extends GraphEmptyBase implements GraphBase<N, Tp> {
    readonly isDirected: boolean;
    readonly context: TpG['context'];
    _NonEmptyType: TpG['nonEmpty'];
    constructor(isDirected: boolean, context: TpG['context']);
    get linkMap(): TpG['linkMap'];
    getConnectionsFrom(): TpG['linkConnections'];
    addNode(node: N): TpG['nonEmpty'];
    addNodes(nodes: StreamSource<N>): WithGraphValues<Tp, N, V>['nonEmpty'];
    connect(node1: N, node2: N): TpG['nonEmpty'];
    connectAll(links: StreamSource<WithGraphValues<Tp, N, V>['link']>): WithGraphValues<Tp, N, V>['nonEmpty'];
    toString(): string;
    toJSON(): ToJSON<any[]>;
    toBuilder(): TpG['builder'];
}