import { State, Downstream, Upstream, SubState } from './types';
export declare function makeState<T>(initial: T, downstream: Downstream<T>, upstream: Upstream<T>): State<T>;
export declare function makeState<T, K extends keyof T>(initial: T[K] | undefined, downstream: Downstream<T[K] | undefined>, upstream: Upstream<T[K]>): SubState<T, K>;