import { Action } from '../task';
import type { Join, Fork } from '../dag';
import * as DAG from '../dag';
/**
 * An action node defines an executable step of a plan
 */
export interface PlanAction<TState> extends DAG.Value {
    /**
     * Unique id for the node. This is calculated from the
     * action metadata and the current runtime state expected
     * by the planner. This is used for loop detection in the plan.
     */
    readonly id: string;
    /**
     * The action to execute
     */
    readonly action: Action<TState>;
}
export type PlanNode<TState> = PlanAction<TState> | Fork | Join;
declare function isPlanAction<TState>(n: DAG.Node): n is PlanAction<TState>;
export declare const PlanAction: {
    /**
     * Create a new Plan action node from a given action and a state
     */
    from<TState>(s: TState, a: Action<TState>): PlanAction<TState>;
    is: typeof isPlanAction;
};
export {};