import type { ActionNode, CollectNode, DecideNode, FlowNode, ReplyNode } from '../types/flow.js';
export declare function isFlowNode(value: unknown): value is FlowNode;
export declare function isReplyNode(node: FlowNode): node is ReplyNode;
export declare function isCollectNode(node: FlowNode): node is CollectNode;
export declare function isActionNode(node: FlowNode): node is ActionNode;
export declare function isDecideNode(node: FlowNode): node is DecideNode;