import { Subscriber, Subscription } from "./_core";
import { Dispatcher, MCSNode } from "./_dispatcher";
import * as Sym from "./_symbols";
import { Transaction } from "./_tx";
import { HKT, Observable } from "./Observable";
export declare class Property<A> extends Observable<A> implements HKT<Property<A>> {
    [Sym.HKT]: Property<A>;
    protected __isProperty: true;
    constructor(d: PropertyDispatcher<A>);
}
export declare function isProperty<T>(x: any): x is Property<T>;
export declare class PropertyDispatcher<T> extends Dispatcher<T> {
    protected has: boolean;
    protected val: T;
    protected ended: boolean;
    subscribe(subscriber: Subscriber<T>, order: number): Subscription;
    activate(subscriber: Subscriber<T>, initialNeeded: boolean): void;
    dispose(node: MCSNode<T>): void;
    next(tx: Transaction, val: T): void;
    end(tx: Transaction): void;
    replayState(subscriber: Subscriber<T>): void;
}