webpack.config.js

var webpack = require('webpack'),
  path = require('path'),
  fileSystem = require('fs-extra'),
  env = require('./utils/env'),
  CopyWebpackPlugin = require('copy-webpack-plugin'),
  HtmlWebpackPlugin = require('html-webpack-plugin'),
  TerserPlugin = require('terser-webpack-plugin');
var { CleanWebpackPlugin } = require('clean-webpack-plugin');
var ReactRefreshWebpackPlugin = require('@pmmmwh/react-refresh-webpack-plugin');
var ReactRefreshTypeScript = require('react-refresh-typescript');
const NodePolyfillPlugin = require('node-polyfill-webpack-plugin');
// const LiveReloadPlugin = require('webpack-livereload-plugin');

const ASSET_PATH = process.env.ASSET_PATH || '/';

var alias = {};

// load the secrets
var secretsPath = path.join(__dirname, 'secrets.' + env.NODE_ENV + '.js');

var fileExtensions = [
  'jpg',
  'jpeg',
  'png',
  'gif',
  'eot',
  'otf',
  'svg',
  'ttf',
  'woff',
  'woff2',
];

if (fileSystem.existsSync(secretsPath)) {
  alias['secrets'] = secretsPath;
}

const isDevelopment = process.env.NODE_ENV !== 'production';
const enableAutoReload = false;

var options = {
  mode: process.env.NODE_ENV || 'development',
  entry: {
    app: path.join(__dirname, 'src', 'pages', 'App', 'index.jsx'),
    options: path.join(__dirname, 'src', 'pages', 'Options', 'index.jsx'),
    popup: path.join(__dirname, 'src', 'pages', 'Popup', 'index.tsx'),
    background: path.join(__dirname, 'src', 'pages', 'Background', 'index.ts'),
    contentScript: path.join(__dirname, 'src', 'pages', 'Content', 'index.ts'),
    injectScript: path.join(__dirname, 'src', 'pages', 'Content', 'inject.ts'),
  },
  //   chromeExtensionBoilerplate: {
  //     notHotReload: ['background', 'contentScript', 'injectScript'],
  //     enableBackgroundAutoReload: true,
  //   },
  output: {
    filename: 'ex_[name].bundle.js',
    path: path.resolve(__dirname, 'build'),
    clean: true,
    publicPath: ASSET_PATH,
  },
  module: {
    rules: [
      {
        // look for .css or .scss files
        test: /\.(css|scss)$/,
        // in the `src` directory
        use: [
          {
            loader: 'style-loader',
          },
          {
            loader: 'css-loader',
          },
          {
            loader: 'sass-loader',
            options: {
              sourceMap: true,
            },
          },
        ],
      },
      {
        test: new RegExp('.(' + fileExtensions.join('|') + ')$'),
        type: 'asset/resource',
        exclude: /node_modules/,
        // loader: 'file-loader',
        // options: {
        //   name: '[name].[ext]',
        // },
      },
      {
        test: /\.html$/,
        loader: 'html-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.(ts|tsx)$/,
        exclude: /node_modules/,
        use: [
          {
            loader: require.resolve('ts-loader'),
            options: {
              getCustomTransformers: () => ({
                before: [
                  isDevelopment && enableAutoReload && ReactRefreshTypeScript(),
                ].filter(Boolean),
              }),
              transpileOnly: isDevelopment,
            },
          },
        ],
      },
      {
        test: /\.(js|jsx)$/,
        use: [
          {
            loader: 'source-map-loader',
          },
          {
            loader: require.resolve('babel-loader'),
            options: {
              plugins: [
                isDevelopment && require.resolve('react-refresh/babel'),
              ].filter(Boolean),
            },
          },
        ],
        exclude: /node_modules/,
      },
    ],
  },
  resolve: {
    fallback: {
      buffer: require.resolve('buffer/'),
      //   path: require.resolve('path-browserify'),
      //   fs: false,
    },
    alias: alias,
    extensions: fileExtensions
      .map((extension) => '.' + extension)
      .concat(['.js', '.jsx', '.ts', '.tsx', '.css']),
  },
  plugins: [
    // new LiveReloadPlugin({}),
    new NodePolyfillPlugin(),
    new webpack.ProvidePlugin({
      Buffer: ['buffer', 'Buffer'],
    }),
    isDevelopment && enableAutoReload && new ReactRefreshWebpackPlugin(),
    new CleanWebpackPlugin({ verbose: false }),
    new webpack.ProgressPlugin(),
    // expose and write the allowed env vars on the compiled bundle
    new webpack.EnvironmentPlugin({
      NODE_ENV: process.env.NODE_ENV,
    }),
    new CopyWebpackPlugin({
      patterns: [
        {
          from: 'src/manifest.json',
          to: path.join(__dirname, 'build'),
          force: true,
          transform: function (content, path) {
            // generates the manifest file using the package.json informations
            return Buffer.from(
              JSON.stringify({
                description: process.env.npm_package_description,
                version: process.env.npm_package_version,
                ...JSON.parse(content.toString()),
              })
            );
          },
        },
      ],
    }),
    // new CopyWebpackPlugin({
    //   patterns: [
    //     {
    //       from: 'src/pages/Content/content.styles.css',
    //       to: path.join(__dirname, 'build'),
    //       force: true,
    //     },
    //   ],
    // }),
    new CopyWebpackPlugin({
      patterns: [
        {
          from: 'src/assets/img/icon-128.png',
          to: path.join(__dirname, 'build'),
          force: true,
        },
      ],
    }),
    new CopyWebpackPlugin({
      patterns: [
        {
          from: 'src/assets/img/icon-34.png',
          to: path.join(__dirname, 'build'),
          force: true,
        },
      ],
    }),
    new CopyWebpackPlugin({
      patterns: [
        {
          from: 'src/assets/img/dapp_favicon_default@2x.png',
          to: path.join(__dirname, 'build'),
          force: true,
        },
      ],
    }),
    new HtmlWebpackPlugin({
      template: path.join(__dirname, 'src', 'pages', 'App', 'index.html'),
      filename: 'app.html',
      chunks: ['app'],
      cache: false,
    }),
    new HtmlWebpackPlugin({
      template: path.join(__dirname, 'src', 'pages', 'Options', 'index.html'),
      filename: 'options.html',
      chunks: ['options'],
      cache: false,
    }),
    new HtmlWebpackPlugin({
      template: path.join(__dirname, 'src', 'pages', 'Popup', 'index.html'),
      filename: 'popup.html',
      chunks: ['popup'],
      cache: false,
    }),
  ].filter(Boolean),
  infrastructureLogging: {
    level: 'info',
  },
};

if (env.NODE_ENV === 'development') {
  options.devtool = 'cheap-module-source-map';
} else {
  options.optimization = {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        extractComments: false,
      }),
    ],
  };
}

module.exports = options;