import Event from "./Event";
import { EventHandler, IEvent } from './_types';
/**
 * An event type that can only be invoked once. Once the event
 * is invoked, and handler that is added to it will be immediately
 * executed. All subsequent invocations are ignored
 */
export default class SingleInvokeEvent<TEventArgs> extends Event<TEventArgs> implements IEvent<TEventArgs> {
    #private;
    /**
     * Create a new singly invokable event.
     */
    constructor();
    addHandler(eventHandler: EventHandler<TEventArgs>): EventHandler<TEventArgs>;
    invoke(sender: unknown, args: TEventArgs): void;
}