import { utils } from 'ethers';
export declare const ETHER_NATIVE_TOKEN: {
    address: string;
    symbol: string;
    name: string;
};
export declare const EMPTY_DATA: string;
export declare const ONE_SIGNATURE_GAS_COST: utils.BigNumber;
export declare const CURRENT_WALLET_VERSION = "beta2";
export declare const CURRENT_NETWORK_VERSION = "constantinople";
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