type EventHandler = (...args: any[]) => void;
declare class EventBus {
    private events;
    private eventHistory;
    private maxHistoryAge;
    on(event: string, handler: EventHandler, triggerHistory?: boolean): void;
    off(event: string, handler: EventHandler): void;
    emit(event: string, ...args: any[]): void;
    private saveToHistory;
    private cleanExpiredHistory;
    private checkAndTriggerHistory;
    clearHistory(event?: string): void;
}
export declare const eventBus: EventBus;
export {};