import { EthWrapperOptions, EthWrapperWrapOptions } from '../types/index';
/**
 * Utility class used to wrap and unwrap ETH on any network that used ETH as a native currency and has an ERC20 WETH
 * contract
 */
export default class EthWrapper {
    private wallet;
    private wethContractAddress;
    private provider;
    private signer;
    /**
     * Creates an EthWrapper instance
     *
     * @param {EthWrapperOptions} options
     * @param {String} options.rpcEndpointUrl The url of the JSON RPC of the network
     * @param {String} options.wethContractAddress The address of the WETH contract for this network
     * @param {EthWrapperOptionsWallet} options.wallet
     * @param {String} options.wallet.address The address of the wallet used to wrap/unwrap
     * @param {String} options.wallet.privateKey The private key of the wallet used to wrap/unwrap
     */
    constructor({ rpcEndpointUrl, wethContractAddress, wallet }: EthWrapperOptions);
    /**
     * Wraps native ETH to ERC20 WETH
     *
     * @param {EthWrapperWrapOptions} options
     * @param {Number} options.amount The amount of ETH to wrap (in ETH readable format)
     * @returns {Promise<string>} Hash of the wrap transaction
     */
    wrap({ amount }: EthWrapperWrapOptions): Promise<string>;
    /**
     * Unwraps ERC20 WETH to native ETH
     *
     * @param {EthWrapperWrapOptions} options
     * @param {Number} options.amount The amount of WETH to unwrap (in WETH units - readable format)
     * @returns {Promise<string>} Hash of the unwrap transaction
     */
    unwrap({ amount }: EthWrapperWrapOptions): Promise<string>;
}