webpack.config.js

const path = require("path");
const webpack = require("webpack");
const PrettierPlugin = require("prettier-webpack-plugin");
const TerserPlugin = require("terser-webpack-plugin");
const getPackageJson = require("./scripts/getPackageJson");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const OptimizeCSSAssetsPlugin = require("optimize-css-assets-webpack-plugin");

const { version, name, license, repository, author } = getPackageJson(
  "version",
  "name",
  "license",
  "repository",
  "author"
);

const banner = `
  ${name} v${version}
  ${repository.url}

  Copyright (c) ${author.replace(
    / *\<[^)]*\> */g,
    " "
  )} and project contributors.

  This source code is licensed under the ${license} license found in the
  LICENSE file in the root directory of this source tree.
`;

module.exports = {
  mode: "production",
  devtool: "source-map",
  entry: "./src/lib/index.js",
  output: {
    filename: "index.js",
    path: path.resolve(__dirname, "build"),
    library: "bloggrs",
    libraryTarget: "umd",
    clean: true,
  },
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({ extractComments: false }),
      new OptimizeCSSAssetsPlugin({
        cssProcessorOptions: {
          map: {
            inline: false,
          },
        },
      }),
    ],
  },
  module: {
    rules: [
      {
        test: /\.m?js$/,
        exclude: /(node_modules|bower_components)/,
        use: {
          loader: "babel-loader",
        },
      },
      {
        test: /\.(sa|sc|c)ss$/,
        use: [
          MiniCssExtractPlugin.loader,
          { loader: "css-loader", options: { sourceMap: true } },
        ],
      },
    ],
  },
  plugins: [
    new PrettierPlugin(),
    new MiniCssExtractPlugin({
      filename: "css/index.css",
    }),
    new webpack.BannerPlugin(banner),
  ],
};