javascript - Use webpack to package and propose public vue. Why does the size become larger?

Question

{
  entry: {
   bundle: 'app'
   vendors: ['vue']
  }

  plugins: {
      new webpack.optimize.CommonsChunkPlugin({
        name     : 'vendors', 
        filename : 'vendors.js'
      })
  }
}

I want to mention vue to the public part
vue.js is about a little more than 200
The packaged vendors.js is more than 700k
Why is this?

Answer 1

Try this

names: ['vendors', 'manifest'] 

Answer 2

The reason is known
devtool: 'eval-source-map',

Just replace it with
devtool: 'source-map',
and it'll be fine

After checking the information, I don’t really understand the difference between the various options of devtool