import BigNumber from "bignumber.js";
import { Contract } from "@ethersproject/contracts";
import EthereumConfig from "./ethereum";
import type { TokenConfig, Tx } from "../../common/types";
export interface ERC20TokenConfig extends TokenConfig {
    contractAddress: string;
}
export default class ERC20Config extends EthereumConfig {
    private contractInstance;
    private contractAddress;
    constructor(config: ERC20TokenConfig);
    getContract(): Promise<Contract>;
    getTx(txId: string): Promise<Tx>;
    getFee(amount: BigNumber.Value, to?: string): Promise<BigNumber>;
    createTx(amount: BigNumber.Value, to: string, _fee?: string): Promise<{
        txId: string | undefined;
        tx: any;
    }>;
    getGas(): Promise<[BigNumber, number]>;
}