export declare class Approve {
    ETH_ADDRESS: string;
    NETWORK_ID: number;
    WEB3_URL: string;
    DODO_APPROVE: string;
    constructor(_NETWORK_ID: number, _WEB3_URL?: string, _DODO_APPROVE?: string);
    /**
     * @notice 判断 token 是否需要授权
     * @param fromToken   {"address"}
     * @param addr        用户地址
     */
    ApproveJudge(fromToken: {
        address: string;
    }, addr: string, targetAddr?: string, web3Provider?: any): Promise<any>;
    /**
     * @notice ERC20 Token 交易前授权
     * @param fromToken   {"address"}
     * @param targetAddr 授权合约地址
     * @param approveAmount  hex 16进制字符串数值
     */
    ApproveHandle(fromToken: {
        address: string;
    }, targetAddr: string, approveAmount: string, web3Provider?: any): Promise<any>;
}