import { IStateTreeNode } from "./NodeUtils";
import { IDisposer } from "../utils";
export declare type IMiddlewareEventType = "action" | "flow_spawn" | "flow_resume" | "flow_resume_error" | "flow_return" | "flow_throw";
export declare type IMiddlewareEvent = {
    type: IMiddlewareEventType;
    name: string;
    id: number;
    parentId: number;
    rootId: number;
    context: IStateTreeNode;
    tree: IStateTreeNode;
    args: any[];
};
export declare type IMiddlewareHandler = (actionCall: IMiddlewareEvent, next: (actionCall: IMiddlewareEvent) => any) => any;
export declare function getNextActionId(): number;
export declare function runWithActionContext(context: IMiddlewareEvent, fn: Function): any;
export declare function getActionContext(): IMiddlewareEvent;
export declare function createActionInvoker<T extends Function>(target: IStateTreeNode, name: string, fn: T): () => any;
export declare function addMiddleware(target: IStateTreeNode, middleware: IMiddlewareHandler): IDisposer;
export declare function decorate<T extends Function>(middleware: IMiddlewareHandler, fn: T): T;