intermediate

packages/flutter_mozilla_components/javascript/readability/webpack.config.js

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+const path = require('path');
+const { BundleAnalyzerPlugin } = require('webpack-bundle-analyzer');
+const TerserPlugin = require('terser-webpack-plugin');
+const { CleanWebpackPlugin } = require('clean-webpack-plugin');
+
+module.exports = {
+  entry: './src/index.js',
+  output: {
+    path: path.resolve(__dirname, 'dist'),
+    filename: 'readability.min.js',
+    library: 'ReadabilityBundle',
+    libraryTarget: 'umd',
+    globalObject: 'this'
+  },
+  mode: 'production',
+  module: {
+    rules: [
+      {
+        test: /\.js$/,
+        exclude: /node_modules/,
+        use: {
+          loader: 'babel-loader',
+          options: {
+            presets: ['@babel/preset-env']
+          }
+        }
+      }
+    ]
+  },
+  optimization: {
+    minimize: true,
+    minimizer: [
+      new TerserPlugin({
+        extractComments: false
+      })
+    ],
+    usedExports: true,
+    sideEffects: true
+  },
+  plugins: [
+    new CleanWebpackPlugin(),
+    new BundleAnalyzerPlugin({
+      analyzerMode: 'static',
+      openAnalyzer: false,
+      generateStatsFile: true,
+      statsOptions: { source: false }
+    })
+  ]
+};