webpack.config.js

const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const CleanWebpackPlugin = require("clean-webpack-plugin");
const NameAllModulesPlugin = require('name-all-modules-plugin');
const webpack = require("webpack");

module.exports = {
  entry: ["babel-polyfill", "./src/index.js"],
  devtool: "inline-source-map",
  devServer: {
    hot: true,
    contentBase: path.join(__dirname, "dist"),
    watchContentBase: true
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /(node_modules|bower_components)/,
        use: {
          loader: "babel-loader",
          options: {
            presets: ["@babel/preset-env"],
            plugins: ["@babel/plugin-proposal-throw-expressions"]
          }
        }
      },
      {
        test: /\.css$/,
        use: ["style-loader", "css-loader"]
      },
      {
        test: /\.html$/,
        use: "file-loader"
      }
    ]
  },
  plugins: [
    new CleanWebpackPlugin(["dist"]),
    new HtmlWebpackPlugin({
      title: "MapD Backend Vega Rendering with MapboxGL",
    }),
    new NameAllModulesPlugin(),
    new webpack.NamedModulesPlugin(),
    new webpack.HotModuleReplacementPlugin(),
    new webpack.ProvidePlugin({
      mapboxgl: "mapbox-gl/dist/mapbox-gl"
    })
  ],
  optimization: {
    splitChunks: {
      cacheGroups: {
        commons: {
          test: /[\\/]node_modules[\\/]/,
          name: "vendor",
          chunks: "all"
        }
      }
    }
  },
  output: {
    filename: "[name].[hash].bundle.js",
    path: path.resolve(__dirname, "dist")
  }
};