import Observer from './observer.js';
import type { ISuspense, EffectFunction, EffectOptions } from '../types.js';
import { Stack } from '../methods/debugger.js';
declare class Effect extends Observer {
    fn: EffectFunction;
    suspense?: ISuspense;
    init?: true;
    sync?: true;
    constructor(fn: EffectFunction, options?: EffectOptions);
    run(stack?: Stack): void;
    schedule(stack?: Stack): void;
    stale(status: number, stack?: Stack): void;
    update(stack?: Stack): void;
}
export default Effect;