webpack.config.js

const webpack = require('webpack');
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require("extract-text-webpack-plugin");
const CopyWebpackPlugin = require('copy-webpack-plugin');

// Separate all the vendor libs into a different js file
const VENDOR_LIBS = [
  'socket.io-client'
];

module.exports = {
  mode: 'development',
  entry: {
    bundle: './src/index.js',
    vendor: VENDOR_LIBS
  },
  output: {
    path: path.join(__dirname, 'dist'),
    filename: '[name].[chunkhash].js',
    publicPath: '/'
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        use: 'babel-loader',
        exclude: /node_modules/
      },
      {
        test: /\.css$/,
        use: ExtractTextPlugin.extract({
          fallback: "style-loader",
          use: "css-loader"
        })
      }
    ]
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV)
    }),
    new HtmlWebpackPlugin({
      template: 'src/index.html'
    }),
    new ExtractTextPlugin("styles.css"),
    new CopyWebpackPlugin([
      { from: 'static' }
    ])
  ]
};