export type EventHandler<T> = (payload: T) => void;
/**
 * Minimal typed pub/sub. `Events` maps an event name to its payload type, so
 * `on`/`emit` are checked against the same shape. Replaces the old stringly-typed
 * event bus.
 */
export declare class EventBus<Events> {
    private handlers;
    on<K extends keyof Events>(type: K, handler: EventHandler<Events[K]>): () => void;
    emit<K extends keyof Events>(type: K, payload: Events[K]): void;
    clear(): void;
}