webpack.common.js

const HtmlWebPackPlugin = require("html-webpack-plugin");
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
const path = require('path');

const devMode = process.env.NODE_ENV !== 'production';
const htmlWebpackPlugin = new HtmlWebPackPlugin({
  template: "./src/index.html",
  filename: "./index.html"
});

module.exports = {
  output:{
    path: path.join(__dirname,'/dist'),
    filename:'[name].[hash].js',
    publicPath: '/',
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader"
        }
      },
      {
        test: /\.jsx$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader"
        }
      },
      {
        test: /\.css$/,
        include: [
          path.resolve(__dirname, 'src'),
        ],
        use: [
          MiniCssExtractPlugin.loader,
          "css-loader"
        ]
      },
      {
        test: /\.s?[ac]ss$/,
        use: [
           devMode ? 'style-loader' : MiniCssExtractPlugin.loader,
           'css-loader',
           'sass-loader',
        ],
      },
      {
        test: /\.(png|svg|jpg|gif)$/,
        use: ['file-loader']
      }
    ]
  },
  plugins: [
    htmlWebpackPlugin,
    //new BundleAnalyzerPlugin(),
    new MiniCssExtractPlugin({
      filename: devMode ? '[name].css' : '[name].[hash].css',
      chunkFilename: devMode ? '[id].css' : '[id].[hash].css',
    })
  ],
  optimization: {
    minimizer: [new UglifyJsPlugin()],
  },
  devServer: {
    historyApiFallback: true,
    disableHostCheck: true,
    host: '0.0.0.0',
  }
};