import { Component } from './component';
import { Props } from 'misstime';
import { ChangeCallback } from '../utils/types';
export declare type WatchOptions = {
    inited?: boolean;
    presented?: boolean;
};
export declare function watch<P extends {}, K extends keyof Props<P>>(key: K, callback: ChangeCallback<Props<P>, K>, options?: WatchOptions, instance?: Component<P> | null): void;