import { ethers } from "ethers";
import { SupportChain } from "../types";
export declare class Currency {
    private provider;
    private universalErc20ContractWithProvider;
    address: string;
    name: string | undefined;
    symbol: string | undefined;
    decimals: string | undefined;
    constructor(tokenAddress: string, chainId: SupportChain);
    initialization(): Promise<void>;
    totalSupply(): Promise<any>;
    balanceOf(accountAddress: string): Promise<any>;
    allowance(owner: string, spender: string): Promise<any>;
    approve(signer: ethers.Wallet | ethers.providers.JsonRpcSigner, spender: string, wei_amount?: string): Promise<ethers.ContractTransaction>;
}