import type { KernelEvent, KWPFrame } from '../types.js';
type KernelEventHandler = (event: KernelEvent) => void;
/**
 * Typed event bus for kernel events.
 *
 * The bus decouples kernel state mutations from transport-level broadcast.
 * Each transport registers a listener and serialises events into KWP event
 * frames for connected clients.
 */
export declare class KernelEventBus {
    #private;
    emit(event: KernelEvent): void;
    on(handler: KernelEventHandler): void;
    off(handler: KernelEventHandler): void;
    once(handler: KernelEventHandler): void;
    /**
     * Converts a KernelEvent into a KWP event frame for wire transmission.
     */
    static toKWPFrame(event: KernelEvent): KWPFrame;
    removeAllListeners(): void;
}
export {};
//# sourceMappingURL=event-bus.d.ts.map