Node.js Javascript ES6 TypeError：没有'new'就不能调用类构造函数客户端

我有一个用Javascript ES6编写的类.当我try 执行nodemon命令时，我总是看到这个错误TypeError: Class constructor Client cannot be invoked without 'new'

完整错误如下所述:

/Users/akshaysood/Blockchain/fabricSDK/dist/application/Transaction.js:45
        return (0, _possibleConstructorReturn3.default)(this, (FBClient.__proto__ || (0, _getPrototypeOf2.default)(FBClient)).call(this, props));
                                                                                                                              ^

TypeError: Class constructor Client cannot be invoked without 'new'
    at new FBClient (/Users/akshaysood/Blockchain/fabricSDK/dist/application/Transaction.js:45:127)
    at Object.<anonymous> (/Users/akshaysood/Blockchain/fabricSDK/dist/application/Transaction.js:195:14)
    at Module._compile (module.js:641:30)
    at Object.Module._extensions..js (module.js:652:10)
    at Module.load (module.js:560:32)
    at tryModuleLoad (module.js:503:12)
    at Function.Module._load (module.js:495:3)
    at Module.require (module.js:585:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/Users/akshaysood/Blockchain/fabricSDK/dist/routes/users.js:11:20)

我想做的是，我创建了一个类，然后创建了该类的一个实例.然后我试图导出这个变量.

课程 struct 定义如下:

class FBClient extends FabricClient{

    constructor(props){
        super(props);
    }

<<< FUNCTIONS >>>

}

How I am trying to export the variable ->

var client = new FBClient();
client.loadFromConfig(config);

export default client = client;

You can find the full code here > https://hastebin.com/kecacenita.js Code generated by Babel > https://hastebin.com/fabewecumo.js