Enable react production build

apps/debugger/webpack.config.js

 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 productionConfig = process.env.NODE_ENV === 'production' ? {
+    mode: 'production',
+    devtool: 'source-map',
+    optimization: {
+      minimize: true,
+      minimizer: [new TerserPlugin()]
+    }
+  } : {}
 
-    return {
-        ...nxWebpackConfig,
-        node: {
-            fs: 'empty',
-            tls: 'empty',
-            readline: 'empty',
-            net: 'empty',
-            module: 'empty',
-            child_process: 'empty'
-        }
+  return {
+    ...nxWebpackConfig,
+    ...productionConfig,
+    node: {
+      fs: 'empty',
+      tls: 'empty',
+      readline: 'empty',
+      net: 'empty',
+      module: 'empty',
+      child_process: 'empty'
     }
+  }
 }

apps/remix-ide/webpack.config.js

 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 productionConfig = process.env.NODE_ENV === 'production' ? {
+    mode: 'production',
+    devtool: 'source-map',
+    optimization: {
+      minimize: true,
+      minimizer: [new TerserPlugin()]
+    }
+  } : {}
 
-    return {
-        ...nxWebpackConfig,
-        node: {
-            fs: 'empty',
-            tls: 'empty',
-            readline: 'empty',
-            net: 'empty',
-            module: 'empty',
-            child_process: 'empty'
-        }
+  return {
+    ...nxWebpackConfig,
+    ...productionConfig,
+    node: {
+      fs: 'empty',
+      tls: 'empty',
+      readline: 'empty',
+      net: 'empty',
+      module: 'empty',
+      child_process: 'empty'
     }
+  }
 }

package.json

@@ -285,6 +285,7 @@
     "swarmgw": "^0.3.1",
     "tap-spec": "^5.0.0",
     "tape": "^4.13.3",
+    "terser-webpack-plugin": "^4.2.3",
     "ts-jest": "25.2.1",
     "ts-node": "^7.0.1",
     "tslint": "~6.0.0",