import { IComputed, IImmutableCollection, IObservableCollection, IViewModel, IState } from '@guanghechen/viewmodel';
export * from '@guanghechen/viewmodel';
import { IObservableKey } from '@guanghechen/observable';

declare function useComputed<T>(computed$: IComputed<T>): T;

declare function useObserveKey<K, V, C extends IImmutableCollection<K, V>>(collection: IObservableCollection<K, V, C>, key: K): V | undefined;

declare function useObserveSignal<M extends IViewModel, K extends IObservableKey<M>>(viewmodel: M, keys: K[]): number;

type ISetState<T> = (patch: (prev: T) => T) => void;
type IUpdateState<T> = T | ISetState<T>;
declare function useStateValue<T>(state$: IState<T>): T;
declare function useSetState<T>(state$: IState<T>): ISetState<T>;
declare function useState<T>(state$: IState<T>): [T, ISetState<T>];
declare function useReactState<T>(state$: IState<T>): [T, IUpdateState<T>];
declare function useToggleState(state$: IState<boolean>): () => void;

declare const useSyncExternalStore: <T>(subscribe: (onStoreChange: () => void) => () => void, getSnapshot: () => T, getServerSnapshot?: () => T) => T;

type V = IViewModel & {
    name?: string | null;
};
type F<T extends V> = () => T | Promise<T>;
declare const useViewModel: <T extends V>(fn: F<T>) => T | null;

export { useComputed, useObserveKey, useObserveSignal, useReactState, useSetState, useState, useStateValue, useSyncExternalStore, useToggleState, useViewModel };
export type { ISetState, IUpdateState };