import { DynamicGraphNode, DynamicNodeDefinition, DynamicNodeType, GraphNode, GraphOperation, NodeData, NodeDefinition, NodeName, NodeProperties, NodeState, OperationType, SerializedNodeProperties } from '../../../types/graph';
/**
 * A definition of the `step` graph operation.
 * See the [[stepOperation]] documentation to find out more.
 */
export interface StepOperation<T> extends GraphOperation<'step', StepProperties<T>> {
}
export interface StepProperties<T> {
    acc: T;
    item: GraphNode;
    next: GraphNode | undefined;
}
/**
 * An implementation of the [[stepOperation]].
 * See the [[stepOperation]] documentation to find out more.
 */
export declare const StepOperationType: OperationType<'step', StepProperties<any>>;
/**
 * Creates a new instance of [[stepOperation]]. This operation is used to instruct Muster
 * to traverse the `call` operation for a given node.
 */
export declare function step<T>(acc: T, item: GraphNode, next?: GraphNode): StepOperation<T>;
export declare function isStepOperation<T>(value: GraphOperation): value is StepOperation<T>;
export declare type SteppableNodeType<T extends NodeName = NodeName, P extends NodeProperties = NodeProperties, S extends NodeState = NodeState, D extends NodeData = NodeData, V extends SerializedNodeProperties = P> = DynamicNodeType<T, P, S, D, V, 'step', StepOperation<any>>;
export declare type SteppableGraphNode<T extends NodeName = NodeName, P extends NodeProperties = NodeProperties, S extends NodeState = NodeState, D extends NodeData = NodeData, V extends SerializedNodeProperties = P> = DynamicGraphNode<T, P, S, D, V, 'step', StepOperation<any>, SteppableNodeType<T, P, S, D, V>>;
export declare type SteppableNodeDefinition<T extends NodeName = NodeName, P extends NodeProperties = NodeProperties, S extends NodeState = NodeState, D extends NodeData = NodeData, V extends SerializedNodeProperties = P> = DynamicNodeDefinition<T, P, S, D, V, 'step', StepOperation<any>, SteppableNodeType<T, P, S, D, V>>;
export declare function supportsStepOperation<T extends NodeName = NodeName, P extends NodeProperties = NodeProperties, S extends NodeState = NodeState, D extends NodeData = NodeData, V extends SerializedNodeProperties = P>(node: NodeDefinition): node is SteppableNodeDefinition<T, P, S, D, V>;
export declare function supportsStepOperation<T extends NodeName = NodeName, P extends NodeProperties = NodeProperties, S extends NodeState = NodeState, D extends NodeData = NodeData, V extends SerializedNodeProperties = P>(node: GraphNode): node is SteppableGraphNode<T, P, S, D, V>;
export declare function supportsStepOperation<T extends NodeName = NodeName, P extends NodeProperties = NodeProperties, S extends NodeState = NodeState, D extends NodeData = NodeData, V extends SerializedNodeProperties = P>(node: NodeDefinition | GraphNode): node is SteppableNodeDefinition<T, P, S, D, V> | SteppableGraphNode<T, P, S, D, V>;