import { MutableSet } from '@noshiro/ts-utils';
import type { ChildObservable, ObservableId, RootObservable, RootObservableType } from '../types';
import { ObservableBaseClass } from './observable-base-class';
export declare class RootObservableClass<A, Type extends RootObservableType> extends ObservableBaseClass<A, 'root', 0> implements RootObservable<A, Type> {
    #private;
    readonly type: Type;
    protected readonly _descendantsIdSet: MutableSet<ObservableId>;
    constructor({ type, currentValueInit, }: Readonly<{
        type: Type;
        currentValueInit: RootObservable<A, Type>['currentValue'];
    }>);
    addDescendant<B>(child: ChildObservable<B>): void;
    startUpdate(nextValue: A): void;
}