webpack.prod.js

const path = require("path");
const common = require("./webpack.common");
const { merge }= require("webpack-merge");
const { CleanWebpackPlugin }= require("clean-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const OptimizeCssAssetsPlugin = require("optimize-css-assets-webpack-plugin");
const TerserPlugin = require("terser-webpack-plugin");
const BundleTracker = require('webpack-bundle-tracker');

module.exports = merge(common, {
  mode: "production",
  output: {
    filename: "[name].[contenthash].js",
    path: path.resolve(__dirname, "./assets/staticfiles/bundles/"),
    publicPath: "/static/bundles/",
  },
  optimization: {
    minimizer: [
      new OptimizeCssAssetsPlugin(),
      new TerserPlugin()
    ]
  },
  plugins: [
    new MiniCssExtractPlugin({ filename: "[name].[contenthash].css" }),
    new CleanWebpackPlugin(),
    new BundleTracker({path: __dirname, filename: './assets/staticfiles/bundles/stats.json'})
  ],
  module: {
    rules: [
      {
        test: /\.scss$/,
        use: [
          MiniCssExtractPlugin.loader, //3. Extract css into files
          "css-loader", //2. Turns css into commonjs
          "sass-loader" //1. Turns sass into css
        ]
      }
    ]
  }
});