import type { IObserver, EqualsFunction, UpdateFunction, ObservableOptions } from '../types.js';
import { Stack } from '../methods/debugger.js';
declare class Observable<T = unknown> {
    parent?: IObserver;
    value: T;
    equals?: EqualsFunction<T>;
    observers: Set<IObserver>;
    stack?: Stack;
    options?: ObservableOptions<T>;
    constructor(value: T, options?: ObservableOptions<T>, parent?: IObserver);
    get(): T;
    set(value: T): T;
    stale(status: number, stack?: Stack): void;
    update(fn: UpdateFunction<T>, stack?: Stack): T;
}
export default Observable;