import { BaseObservableValue } from "./index";
import { EventEmitter } from "../../utils/EventEmitter";
export declare class EventObservableValue<T, V extends EventEmitter<T>> extends BaseObservableValue<V> {
    private readonly value;
    private readonly eventName;
    private eventSubscription;
    constructor(value: V, eventName: keyof T);
    onSubscribeFirst(): void;
    onUnsubscribeLast(): void;
    get(): V;
}