import { V2NIMBroadcastNotification, V2NIMCustomNotification, V2NIMSendCustomNotificationParams } from '../v2_def/v2_nim_struct_def';
import { EventEmitter } from 'eventemitter3';
export declare interface V2NIMNotificationListener {
    /** 收到自定义通知 */
    receiveCustomNotifications: [Array<V2NIMCustomNotification>];
    /** 收到广播通知 */
    receiveBroadcastNotifications: [Array<V2NIMBroadcastNotification>];
}
/** @brief 通知服务 */
export declare class V2NIMNotificationService extends EventEmitter<V2NIMNotificationListener> {
    instance: any;
    constructor();
    /**
     * @brief 发送自定义通知
     * @param conversationId 会话 ID
     * @param content 通知内容
     * @param params 发送通知相关配置参数
     * @returns void
     * @example
     * ```javascript
     * await v2.notificationService.sendCustomNotification(conversationId, content, params)
     * ```
     */
    sendCustomNotification(conversationId: string, content: string, params: V2NIMSendCustomNotificationParams): Promise<void>;
}