import type { AutomationEventType, AutomationEventPayloads, AutomationEventHandler } from './types.js';
export declare class AutomationEventBus {
    private handlers;
    on<E extends AutomationEventType>(event: E, handler: AutomationEventHandler<E>): void;
    /** Emit an event — handlers run sequentially, errors are returned (not thrown) */
    emit<E extends AutomationEventType>(event: E, payload: AutomationEventPayloads[E]): Promise<Error[]>;
    /** Check if any handlers are registered for an event */
    has(event: AutomationEventType): boolean;
    removeAll(): void;
}
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