/**
 * Creates a standalone action. A standalone action must always take an existing tree node as first argument.
 *
 * @param actionName Unique action name.
 * @param fn Function.
 * @returns The function as an standalone action.
 */
export declare function standaloneAction<FN extends (target: any, ...args: any[]) => any>(actionName: string, fn: FN): FN;
/**
 * Creates a standalone flow. A standalone flow must always take an existing tree node as first argument.
 *
 * @param actionName Unique action name.
 * @param fn Function.
 * @returns The function as an standalone flow.
 */
export declare function standaloneFlow<TTarget, TArgs extends any[], TResult>(actionName: string, fn: (target: TTarget, ...args: TArgs) => Generator<any, TResult, any>): (target: TTarget, ...args: TArgs) => Promise<TResult>;