import type { HoloScriptValue } from '@holoscript/core';
export type EventHandler = (data?: HoloScriptValue) => void | Promise<void>;
export declare class GlobalEventBus {
    private static instance;
    private handlers;
    private constructor();
    /**
     * Get the singleton instance
     */
    static getInstance(): GlobalEventBus;
    /**
     * Register an event listener
     * @param event The event name
     * @param handler Callback function
     * @returns Unsubscribe function
     */
    on(event: string, handler: EventHandler): () => void;
    /**
     * Remove an event listener
     */
    off(event: string, handler: EventHandler): void;
    /**
     * Emit an event to all registered listeners
     */
    emit(event: string, data?: HoloScriptValue): Promise<void>;
    /**
     * Clear all event handlers
     */
    clear(): void;
    /**
     * Get all registered events (for debugging)
     */
    getEvents(): string[];
}
/**
 * Convenience export for the singleton
 */
export declare const eventBus: GlobalEventBus;
//# sourceMappingURL=EventBus.d.ts.map