import type { EventEmitter as EventEmitterType } from '@visactor/vutils'; export interface EventBusOptions { enableErrorBoundary?: boolean; enablePerformanceMonitoring?: boolean; maxListeners?: number; } export declare class VTableSheetEventBus { private eventBus; private options; private performanceMetrics; private wrappedCallbacks; constructor(options?: EventBusOptions); on(eventType: string, callback: (...args: any[]) => void): void; off(eventType: string, callback?: (...args: any[]) => void): void; emit(eventType: string, ...args: any[]): void; once(eventType: string, callback: (...args: any[]) => void): void; removeAllListeners(eventType?: string): void; listenerCount(eventType: string): number; getPerformanceMetrics(eventType?: string): Map; getEventEmitter(): EventEmitterType; private createErrorBoundary; private recordPerformanceMetric; }