jsrunner-bundler/webpack.config.js

NPM Bundler (sources & types) for the JavaScript Runner

const path = require('path');
const fs = require('fs');
const webpack = require('webpack');
const NodePolyfillPlugin = require('node-polyfill-webpack-plugin');
const TerserPlugin = require('terser-webpack-plugin');

const entryFiles = ['./src/polyfills.js', './src/index.js'].filter(f => fs.existsSync(f));

module.exports = {
  mode: 'production',
  target: 'web',

  entry: entryFiles,

  output: {
    path: path.resolve(__dirname, './dist'),
    filename: 'jsrunner.js',
    library: {
      type: 'module',
      // name: 'JsRunner', // eliminar esta línea
    },
    environment: {
      module: true,
    },
  },


  experiments: {
    outputModule: true,
  },

  resolve: {
    mainFields: ['browser', 'module', 'main'],
    extensions: ['.js', '.json'],
    alias: {
      'node:tty': 'tty-browserify', // para compatibilidad con node: imports
    },
    fallback: {
      fs: false,
      net: false,
      tls: false,
      child_process: false,

      tty: require.resolve('tty-browserify'),
      path: require.resolve('path-browserify'),
      stream: require.resolve('stream-browserify'),
      crypto: require.resolve('crypto-browserify'),
      os: require.resolve('os-browserify/browser'),
      assert: require.resolve('assert/'),
      url: require.resolve('url/'),
      querystring: require.resolve('querystring-es3'),
      buffer: require.resolve('buffer/'),
      http: require.resolve('stream-http'),
      https: require.resolve('https-browserify'),
      zlib: require.resolve('browserify-zlib'),
    },
  },

  plugins: [
    // Reemplaza `node:fs` → `fs`, etc.
    new webpack.NormalModuleReplacementPlugin(/^node:(.+)$/, resource => {
      resource.request = resource.request.replace(/^node:/, '');
    }),

    new NodePolyfillPlugin(),

    new webpack.ProvidePlugin({
      process: 'process/browser',
      Buffer: ['buffer', 'Buffer'],
    }),

    new webpack.optimize.LimitChunkCountPlugin({
      maxChunks: 1,
    }),
  ],

  module: {
    rules: [
      {
        test: /\.m?js$/,
        resolve: { fullySpecified: false },
        // Puedes quitar babel si no usas import() dinámico
        // Si lo dejas, asegúrate de tener babel-loader instalado
        /*
        use: {
          loader: 'babel-loader',
          options: { plugins: ['dynamic-import-node'] },
        },
        */
      },
    ],
  },

  optimization: {
    splitChunks: false,
    runtimeChunk: false,
    concatenateModules: false,
    usedExports: true,
    sideEffects: false,
    minimize: true,
    minimizer: [
      new TerserPlugin({
        terserOptions: {
          format: { comments: false },
          compress: { drop_console: true },
        },
        extractComments: false,
      }),
    ],
  },

  stats: {
    all: false,
    errors: true,
    warnings: true,
    timings: true,
    assets: true,
    builtAt: true,
    colors: true,
  },
};