import { Spec } from 'immutability-helper';
import { useAsyncEffect } from 'use-async-effect';
import { Component } from 'react';
export { useAsyncEffect };
export declare function useImmutableState<S>(v: S): [S, (spec: Spec<S>) => void];
export declare function useMemoizedValue(obj: any, equalityFunction?: (a: any, b: any) => boolean): any;
export declare class StatefulComponent<Props, State> extends Component<Props, State> {
    constructor(props: Props);
    updateState(spec: Spec<State>): void;
}
export declare function usePrevious<T>(value: T): T | undefined;
export declare function useAsyncMemo<T>(fn: () => Promise<T>, deps: any[]): T | null;