import type { IEvent } from './IEvent';
import type { IEventHandler } from './IEventHandler';
/**
 * A base implementation of an event. To avoid misuse, declare a private event of this type and expose it as an {@linkcode IEvent}.
 * @template TSubject Optional, the type of object that raises the event.
 * @template TEventArgs Optional, the type of the event context containing additional information about the event.
 */
export declare class EventDispatcher<TSubject, TEventArgs = void> implements IEvent<TSubject, TEventArgs> {
    private _eventHandlers;
    /** Initializes a new instance of the {@linkcode EventDispatcher} class. */
    constructor();
    /**
     * Subscribes the given eventHandler to the event.
     * @param eventHandler An event handler that gets notified when the event is raised.
     */
    subscribe<TEventHandler extends IEventHandler<TSubject, TEventArgs>>(eventHandler: TEventHandler): void;
    /**
     * Unsubscribes the given eventHandler to the event. The exact same object that was used to subscribe to the event must be passed as well.
     * @param eventHandler The event handler that was previously subscribed to the event.
     */
    unsubscribe<TEventHandler extends IEventHandler<TSubject, TEventArgs>>(eventHandler: TEventHandler): void;
    /**
     * Dispatches a notification to all subscribers.
     * @param subject The object raising the event, generally the object which is exposing it.
     * @param args A set of arguments that provide context for the event.
     */
    dispatch(subject: TSubject, args: TEventArgs): void;
}