Performance Webpack Build.js

I'm starting with Webpack. It compiles all javascript and css files into a single file Build.js , Bundle.js , whatever ... In the end it generates a fully mined file using the Production Node command, but it nevertheless generates a relatively heavy file. For a large project (which is mine), you can reach 10mb easy. Loading 10mb at once is too bad. How does Webpack handle this? What is advantageous to use it if it brings me a minified but huge file? Does it select the scripts that will be loaded from import ?

var path = require('path')
var webpack = require('webpack')

module.exports = {
  entry: './src/main.js',
  output: {
    path: path.resolve(__dirname, './dist'),
    publicPath: '/dist/',
    filename: 'build.js'
  },
  module: {
    rules: [
      {
        test: /\.vue$/,
        loader: 'vue-loader',
        options: {
          loaders: {
            'scss': 'vue-style-loader!css-loader!sass-loader',
            'sass': 'vue-style-loader!css-loader!sass-loader?indentedSyntax'
          }
        }
      },
      {
      test: /\.css$/,  
      include: /node_modules/,  
      loaders: ['style-loader', 'css-loader'],
      },
      {
        test: /\.js$/,
        loader: 'babel-loader',
        exclude: /node_modules/
      },
      {
        test: /\.(png|jpg|gif|svg)$/,
        loader: 'file-loader',
        options: {
          name: '[name].[ext]?[hash]'
        }
      },
      {
        test: /\.s(a|c)ss$/,
        loader: 'style-loader!css-loader!sass-loader'
      },
      { test: /\.(png|woff|woff2|eot|ttf|svg)$/,
        loader: 'url-loader?limit=100000'
      }
    ]
  },
  resolve: {
    extensions: ['.json', '.min.css', '.min.js', , '.scss' , '.css', '.js' ],
    alias: {
      'vue$': 'vue/dist/vue.esm.js'
    }
  },
  devServer: {
    historyApiFallback: true,
    noInfo: true
  },
  performance: {
    hints: false
  },
  devtool: '#eval-source-map',
  plugins:[
    new webpack.ProvidePlugin({
       $: "jquery",
       jQuery: "jquery"
    })
  ]
}

if (process.env.NODE_ENV === 'production') {
  module.exports.devtool = '#source-map'
  // http://vue-loader.vuejs.org/en/workflow/production.html
  module.exports.plugins = (module.exports.plugins || []).concat([
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: '"production"'
      }
    }),
    new webpack.optimize.UglifyJsPlugin({
      sourceMap: true,
      compress: {
        warnings: false
      }
    }),
    new webpack.LoaderOptionsPlugin({
      minimize: true
    })
  ])
}

Thank you!