webpack.config.js

const path = require("path");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const CssMinimizerPlugin = require("css-minimizer-webpack-plugin");
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
const ManifestPlugin = require("webpack-manifest-plugin");

module.exports = {
  entry: {
    main: "./frontend/javascript/index.js"
  },
  devtool: false,
  // Set some or all of these to true if you want more verbose logging:
  stats: {
    modules: false,
    builtAt: false,
    timings: false,
    children: false,
  },
  output: {
    path: path.resolve(__dirname, "dist", "_bridgetown", "static", "js"),
    filename: "[name].[contenthash].js",
  },
  resolve: {
    extensions: [".js", ".jsx"],
    modules: [
      path.resolve(__dirname, 'frontend', 'javascript'),
      path.resolve(__dirname, 'frontend', 'styles'),
      path.resolve('./node_modules')
    ],
    alias: {
      bridgetownComponents: path.resolve(__dirname, "src", "_components")
    }
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: "../css/[name].[contenthash].css",
    }),
    new ManifestPlugin({
      fileName: path.resolve(__dirname, ".bridgetown-webpack", "manifest.json"),
    }),
  ],
  module: {
    rules: [
      {
        test: /\.(js|jsx)/,
        use: {
          loader: "babel-loader",
          options: { presets: ["@babel/preset-env"] },
        },
      },

      {
        test: /\.(s[ac]|c)ss$/,
        use: [
          MiniCssExtractPlugin.loader,
          {
            loader: "css-loader",
            options: { url: url => !url.startsWith('/') }
          },
          "postcss-loader"
        ],
      },
    ],
  },
  optimization: {
    minimize: true,
    minimizer: [
      new CssMinimizerPlugin(),
      new UglifyJsPlugin(),
    ],
  },
};