import { V2NIMDatabaseInfo, V2NIMError } from 'ts/v2_def/v2_nim_struct_def';
import { EventEmitter } from 'eventemitter3';
export declare interface V2NIMStatisticsListener {
    /** 数据库异常 */
    databaseException: [V2NIMError];
}
export declare class V2NIMStatisticsService extends EventEmitter<V2NIMStatisticsListener> {
    instance: any;
    constructor();
    getDatabaseInfos(): Promise<V2NIMDatabaseInfo>;
}