import { ethers } from 'ethers';
import { IHinkal } from '../../../data-structures/Hinkal/IHinkal';
import { ERC20Token } from '../../../types/token.types';
export declare const approveTokenToHinkal: (hinkal: IHinkal, chainId: number, contractToApprove: ethers.Contract, amount: bigint, token: ERC20Token) => Promise<Uint8Array | undefined>;
