import { CanvasEvents } from "./Events";
export declare class EventBus {
    private busTopics;
    private subscribers;
    publish<T extends keyof CanvasEvents>(topic: T, args: CanvasEvents[T]): void;
    subscribe<T extends keyof CanvasEvents>(topic: T, callback: (args: CanvasEvents[T]) => void): void;
    unsubscribe<T extends keyof CanvasEvents>(topic: T): void;
}