What's manifest.js handle in aid of?

[ytudt]

In vue-cli webpack.prod.conf.js there are some code like this

 new webpack.optimize.CommonsChunkPlugin({
      name: 'manifest',
      chunks: ['vendor']
    })

and generate a manifest.js file what js should i put in this file?
中国人用汉语回答更好。。。。

[LinusBorg]

https://webpack.js.org/guides/code-splitting-libraries/#manifest-file

[yyyuuu777]

manifest 文件定义了 vendor.js 内部模块的管理， 尽可能使vendor.js 保持不变(vendor js通常比较大变动不利于缓存) , 需要在vendor.js 引入前，引入到html中