import { Web3Signer } from '../signer/Web3Signer';
import { BigNumber } from 'ethers';
import { GasParams } from '../types/types';
export declare function erc20Decimals(web3Signer: Web3Signer, tokenAddress: string): Promise<any>;
export declare function approveERC20(web3Signer: Web3Signer, tokenAddress: string, value: BigNumber, gasParams?: GasParams): Promise<void>;
export declare function setApproveForAll(web3Signer: Web3Signer, tokenAddress: string, gasParams?: GasParams): Promise<void>;