import { StoreInterface } from './StoreInterface';
import { CreateStoreClassOptions } from './StoreClass';
import { StoreInstance } from './StoreInstance';
import { StoreState } from './State';
import { AnyMessage } from './Messages';
export declare type Reducer<TState, TMessage> = (state: TState, message: TMessage) => TState;
export declare type StoreReducer<T extends StoreInterface> = Reducer<StoreState<T>, AnyMessage<T>>;
export declare function createReducer<T extends StoreInterface>(options: CreateStoreClassOptions<T>, storeInstance: StoreInstance<T>): StoreReducer<T>;