import { GraphNode, NodeDefinition, StatelessGraphNode, StatelessNodeDefinition } from '../../types/graph';
import { OperationComposerProperties } from '../../utils/create-operation-composer';
import { InitOperation } from './operations/init';
import { ResultOperation } from './operations/result';
import { StepOperation } from './operations/step';
export declare type TransformOperation = InitOperation | StepOperation<any> | ResultOperation<any>;
export interface CombinedReducerNode extends StatelessGraphNode<'combinedReducer', CombinedReducerNodeProperties> {
}
export interface CombinedReducerNodeDefinition extends StatelessNodeDefinition<'combinedReducer', CombinedReducerNodeProperties> {
}
export interface CombinedReducerNodeProperties extends OperationComposerProperties {
}
export declare function combinedReducer(current: NodeDefinition | GraphNode, next: NodeDefinition | GraphNode): CombinedReducerNodeDefinition;