export type DeviceEventMap = Record<string, any>;
export type Unsubscribe = () => void;
/**
 * DeviceEventBus：基于 React Native DeviceEventEmitter 的轻量事件总线
 * - 仅清理本总线注册的监听器，不影响其他模块
 * - 支持 once/on/emit/off/removeAll
 */
export declare class DeviceEventBus<E extends DeviceEventMap = DeviceEventMap> {
    private subscriptions;
    on<K extends keyof E & string>(eventName: K, listener: (payload: E[K]) => void): Unsubscribe;
    once<K extends keyof E & string>(eventName: K, listener: (payload: E[K]) => void): Unsubscribe;
    emit<K extends keyof E & string>(eventName: K, payload: E[K]): void;
    /**
     * 只移除本总线注册的该事件监听器，不影响外部注册的监听器
     */
    off<K extends keyof E & string>(eventName: K): void;
    /**
     * 清理本总线注册的所有监听器
     */
    removeAll(): void;
}
export declare const deviceEventBus: DeviceEventBus<DeviceEventMap>;
export default deviceEventBus;
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