require.ensure通过webpack打包后出现2个文件

Question

异步加载代码如下:

index.js :

require.ensure(['../mall/order'],function(require){      var order = require('../mall/order');
  });
  
或者require.ensure([],function(require){      var order = require('../mall/order');
  });

order.js也没什么特殊的, 里面也同步引用了一些js

    var CryptoJS = require('crypto-js/core');    require('crypto-js/aes');    require('crypto-js/mode-ecb');    require('crypto-js/pad-pkcs7');    require('crypto-js/enc-utf8');    require('crypto-js/enc-base64');    var CollectionInfo = require('./collectInfo');    require('./user');    require('./address');    var Order = {        ...
    }
    module.exports = Order;

order.js打包后被拆成了2个js, 找不到原因

---

import也试过了, 也是把order.js拆成了2个js:

import('../mall/order').then(function(order){      var order = order;
  });