import { Component } from 'react';
export declare function getDefault<T>(targetValue: T, defaultValue: T): T;
export declare function createStateOperator<State, K extends keyof State>(comp: Component<unknown, Partial<State>>): [
    (propName: K | K[]) => State[K] | Array<State[K]>,
    (state: Partial<State>) => void
];
export type TypeGetState = ReturnType<typeof createStateOperator>[0];
export type TypeSetState = ReturnType<typeof createStateOperator>[1];