config webpack for compiler

apps/solidity-compiler/webpack.config.js

@@ -1,17 +1,31 @@
 const nxWebpack = require('@nrwl/react/plugins/webpack')
+const TerserPlugin = require('terser-webpack-plugin')
 
 module.exports = config => {
-    const nxWebpackConfig = nxWebpack(config)
+  const nxWebpackConfig = nxWebpack(config)
+  const webpackConfig = {
+    ...nxWebpackConfig,
+    node: {
+      fs: 'empty',
+      tls: 'empty',
+      readline: 'empty',
+      net: 'empty',
+      module: 'empty',
+      child_process: 'empty'
+    }
+  }
 
+  if (process.env.NODE_ENV === 'production') {
     return {
-        ...nxWebpackConfig,
-        node: {
-            fs: 'empty',
-            tls: 'empty',
-            readline: 'empty',
-            net: 'empty',
-            module: 'empty',
-            child_process: 'empty'
-        }
+      ...webpackConfig,
+      mode: 'production',
+      devtool: 'source-map',
+      optimization: {
+        minimize: true,
+        minimizer: [new TerserPlugin()]
+      }
     }
+  } else {
+    return webpackConfig
+  }
 }