export declare class DODOExternal {
    ZERO_ADDRESS: string;
    ETH_ADDRESS: string;
    WEB3_URL: string;
    WETH_TOKEN: {
        symbol: string;
        address: string;
        decimals: number;
        name: string;
        source: string;
    };
    DODO_PROXY: string;
    DODO_APPROVE: string;
    DODO_SWAP_CALC_HELPER: string;
    constructor(_WEB3_URL?: string);
    /**
     * @notice 查询路由，仅支持主网
     * @param fromToken
     * @param toToken
     * @param fromAmount  (需计算考虑Decimals)
     * @param slippage  (0-50)(可不填)
     * @param assetTo   (用户地址)(可不填)
     * @param deadline  (交易超时时间，默认20分钟)(可不填)
     */
    GetRoute(fromToken: {
        address: string;
        decimals: number;
        symbol: string;
        source: string;
        name: string;
    }, toToken: {
        address: string;
        decimals: number;
        symbol: string;
        source: string;
        name: string;
    }, fromAmount: string, slippage?: number, assetTo?: string, deadline?: number): Promise<any>;
    /**
     * @notice 构造路由请求至合约
     * @param fromToken
     * @param toToken
     * @param fromAmount   (需计算考虑Decimals)
     * @param slippage     (0-50)
     * @param assetTo      (用户地址)
     * @param source       (询价来源)
     * @param deadline     (交易超时时间，默认20分钟)(可不填)
     */
    MakeRoute(fromToken: {
        address: string;
        decimals: number;
        symbol: string;
        source: string;
        name?: string;
    }, toToken: {
        address: string;
        decimals: number;
        symbol: string;
        name: string;
        source: string;
    }, fromAmount: string, slippage: number, assetTo: string, source: string, deadline?: number): Promise<{
        to: string;
        data: string;
        resCostGas: number;
    }>;
    /**
     * @notice 判断Swap的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   {"symbol","name","decimals","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>;
}
export declare const DODO_V1_TOKENLIST: string[];