import { CommonResponseDto } from '@/infrastructure/dtos/common/common-response.dto';
import { EventEmitter2 } from '@nestjs/event-emitter';
export declare class ConfigsUsecases {
    private readonly eventEmitter;
    constructor(eventEmitter: EventEmitter2);
    saveConfig(key: string, value: string, engine?: string): Promise<CommonResponseDto>;
    getGroupConfigs(group: string): Promise<object>;
    getConfigs(): Promise<import("../../domain/config/config.interface").Config & object>;
    getKeyConfig(key: string): Promise<string | number | undefined>;
}