import type { IEventEmitter, EventHandler, LisaEvent, LisaEventType } from '../../domain';
/**
 * Simple event emitter implementation for Lisa events.
 */
export declare class EventEmitter implements IEventEmitter {
    private handlers;
    /**
     * Emit an event to all registered handlers.
     */
    emit(event: LisaEvent): Promise<void>;
    /**
     * Register a handler for a specific event type.
     */
    on<T extends LisaEventType>(type: T, handler: EventHandler<Extract<LisaEvent, {
        type: T;
    }>>): void;
    /**
     * Remove a handler for a specific event type.
     */
    off<T extends LisaEventType>(type: T, handler: EventHandler<Extract<LisaEvent, {
        type: T;
    }>>): void;
}
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