import type { ActionInstance } from './ActionInstance';
import type { SpecialProperty } from './SpecialProperty';
import { SpecialPropertyMessage } from '../messages/SpecialPropertyMessage';
export declare class Event<T = any> implements SpecialProperty {
    propertyName: string;
    meta: {
        typeName: string;
    };
    action: ActionInstance;
    emit(data: T): Promise<void>;
    subscribe(cb: (data: T) => void): void;
    unsubscribe(cb: (data: T) => void): boolean;
    unsubscribeAll(): void;
    protected createMessage(data: T): SpecialPropertyMessage;
}