import { BlockHttp, UInt64 } from "@dhealth/sdk";
import { ConfigService } from "@nestjs/config";
import { NetworkService } from "../services/NetworkService";
export declare class DappHelper {
    private readonly configService;
    private readonly networkService;
    constructor(configService: ConfigService, networkService: NetworkService);
    getBlockTimestamp(blockRepository: BlockHttp, height: number): Promise<number>;
    getNetworkTimestampFromUInt64(timestamp: UInt64): number;
    getTimeRange(periodFormat: string): {
        startDate: Date;
        endDate: Date;
    };
    createDetailsTableHTML(details: Record<string, string | number | object>[]): string;
}