add hw2

node_modules/antlr4/webpack.config.cjs

@@ -0,0 +1,32 @@
+const path = require('path');
+const ESLintPlugin = require('eslint-webpack-plugin');
+
+module.exports = {
+    mode: "production",
+    entry: './src/antlr4/index.js',
+    output: {
+        filename: 'antlr4.js',
+        path: path.resolve(__dirname, 'dist'),
+        // the name of the exported antlr4
+        library: "antlr4",
+        libraryTarget: 'window'
+    },
+    externals: {
+        module: "empty",
+        net: "empty",
+        fs: "empty"
+    },
+    target: "web",
+    module: {
+        rules: [{
+            test: /\.js$/,
+            exclude: /node_modules/,
+            use: [ 'babel-loader' ]
+        }]
+    },
+    performance: {
+        maxAssetSize: 512000,
+        maxEntrypointSize: 512000
+    },
+    plugins: [ new ESLintPlugin() ]
+};