import type { ethers } from 'ethers';
import type { FilecoinNetworkType } from '../types.ts';
export declare function epochToDate(epoch: number, network: FilecoinNetworkType): Date;
export declare function dateToEpoch(date: Date, network: FilecoinNetworkType): number;
export declare function getGenesisTimestamp(network: FilecoinNetworkType): number;
export declare function timeUntilEpoch(futureEpoch: number, currentEpoch: number): {
    epochs: number;
    seconds: number;
    minutes: number;
    hours: number;
    days: number;
};
export declare function calculateLastProofDate(nextChallengeEpoch: number, maxProvingPeriod: number, network: FilecoinNetworkType): Date | null;
export declare function getCurrentEpoch(provider: ethers.Provider): Promise<bigint>;
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