/**
 * Simple EventEmitter implementation
 */
/**
 * Event listener function type
 */
export type EventListener<T = any> = (event: T) => void | Promise<void>;
/**
 * Event listener options
 */
export interface EventListenerOptions {
    /** Whether to execute the listener only once */
    once?: boolean;
    /** Whether to execute the listener asynchronously */
    async?: boolean;
    /** Priority of the listener (higher = executed first) */
    priority?: number;
    /** Whether to stop event propagation */
    stopPropagation?: boolean;
}
/**
 * Event listener registration
 */
export interface EventListenerRegistration {
    /** Event type */
    type: string;
    /** Listener function */
    listener: EventListener;
    /** Listener options */
    options: EventListenerOptions;
    /** Registration ID */
    id: string;
    /** Whether the listener is active */
    active: boolean;
    /** Registration timestamp */
    timestamp: Date;
}
/**
 * EventEmitter class for handling events
 */
export declare class EventEmitter {
    private listeners;
    /**
     * Add an event listener
     */
    on<T = any>(type: string, listener: EventListener<T>, options?: EventListenerOptions): string;
    /**
     * Add a one-time event listener
     */
    once<T = any>(type: string, listener: EventListener<T>, options?: EventListenerOptions): string;
    /**
     * Remove an event listener
     */
    off(type: string, listenerId: string): boolean;
    /**
     * Remove all listeners for an event type
     */
    offAll(type: string): number;
    /**
     * Emit an event
     */
    emit<T = any>(event: T): Promise<void>;
    /**
     * Emit an event synchronously
     */
    emitSync<T = any>(event: T): void;
    /**
     * Clear all listeners
     */
    clear(): void;
    /**
     * Get listeners for an event type
     */
    getListeners(type: string): EventListenerRegistration[];
    /**
     * Get listener count for an event type
     */
    getListenerCount(type: string): number;
    /**
     * Get all registered event types
     */
    getEventTypes(): string[];
    private generateId;
    private cleanupInactiveListeners;
}
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