type EventKey = string | number;
type EventParams = any;
type Subscription<T = EventParams, K extends EventKey = EventKey> = (params: {
    params: T;
    event: K;
}) => void;
type SubscriptionParams<T = EventParams, K extends EventKey = EventKey> = {
    params: T;
    event: K;
};
interface EventEmitterOptions {
    global?: boolean;
}
declare class EventEmitter<T = EventParams, K extends EventKey = string> {
    private subscriptions;
    private emitEffectCache;
    private readonly isGlobal;
    private static instance;
    constructor(options?: EventEmitterOptions);
    /**
     * 获取全局单例
     */
    static getInstance<T = EventParams, K extends EventKey = string>(): EventEmitter<T, K>;
    /**
     * 订阅事件
     * @param event 事件名
     * @param listener 订阅回调
     * @returns 取消订阅函数
     */
    subscribe<E extends K = K>(event: E, listener: Subscription<T, E>): () => void;
    /**
     * 发送事件通知
     * @param event 事件名
     * @param args 事件参数
     */
    emit<E extends K = K>(event: E, ...args: T extends any[] ? T : [T]): void;
    /**
     * 回放缓存事件（仅非全局实例）
     */
    emitEffect<E extends K = K>(event: E): void;
    /**
     * 移除监听
     */
    removeListener<E extends K = K>(event: E, listener?: Subscription<T, E>): void;
    /**
     * 清空所有事件
     */
    clear(): void;
}
/**
 * Vue hook: 订阅事件，自动解绑
 */
declare function useEventEmitterSubscription<T = EventParams, K extends EventKey = string, E extends K = K>(event: E, listener: Subscription<T, E>, emitter?: EventEmitter<T, K>): void;
declare const eventEmitterOverall: EventEmitter<any, string>;
export { EventEmitter, eventEmitterOverall, useEventEmitterSubscription, };
export type { EventKey, EventParams, Subscription, SubscriptionParams };