A package typed out by lazy loading through vue, in which a js typed the duplicate package into it, how can it be separated? 
this is my webpack plugins configuration
plugins: [
// http://vuejs.github.io/vue-loader/en/workflow/production.html
new webpack.DefinePlugin({
"process.env": env
}),
// UglifyJs do not support ES6+, you can also use babel-minify for better treeshaking: https://github.com/babel/minify
new webpack.optimize.UglifyJsPlugin({
compress: {
warnings: false
},
sourceMap: true
}),
// extract css into its own file
new ExtractTextPlugin({
filename: utils.assetsPath("css/[name].[contenthash].css")
}),
// Compress extracted CSS. We are using this plugin so that possible
// duplicated CSS from different components can be deduped.
new OptimizeCSSPlugin({
cssProcessorOptions: {
safe: true
}
}),
// generate dist index.html with correct asset hash for caching.
// you can customize output by editing /index.html
// see https://github.com/ampedandwired/html-webpack-plugin
new HtmlWebpackPlugin({
filename: config.build.index,
template: "index.html",
inject: true,
minify: {
removeComments: true,
collapseWhitespace: true,
removeAttributeQuotes: true
// more options:
// https://github.com/kangax/html-minifier-sharpoptions-quick-reference
},
// necessary to consistently work with multiple chunks via CommonsChunkPlugin
chunksSortMode: "dependency"
}),
// keep module.id stable when vender modules does not change
new webpack.HashedModuleIdsPlugin(),
// split vendor js into its own file
new webpack.optimize.CommonsChunkPlugin({
name: "vendor",
minChunks: function(module) {
// any required modules inside node_modules are extracted to vendor
return (
module.resource &&
/\.js$/.test(module.resource) &&
module.resource.indexOf(path.join(__dirname, "../node_modules")) === 0
)
}
}),
// extract webpack runtime and module manifest to its own file in order to
// prevent vendor hash from being updated whenever app bundle is updated
new webpack.optimize.CommonsChunkPlugin({
name: "manifest",
minChunks: Infinity
}),
// This instance extracts shared chunks from code splitted chunks and bundles them
// in a separate chunk, similar to the vendor chunk
// see: https://webpack.js.org/plugins/commons-chunk-plugin/-sharpextra-async-commons-chunk
new webpack.optimize.CommonsChunkPlugin({
name: "app",
async: "vendor-async",
children: true,
minChunks: 3
}),
// copy custom static assets
new CopyWebpackPlugin([
{
from: path.resolve(__dirname, "../static"),
to: config.build.assetsSubDirectory,
ignore: [".*"]
}
])]