[Babel] Improve the production build

Author: oliviertassinari

package.json

@@ -46,6 +46,9 @@
     "babel-jest": "^9.0.3",
     "babel-loader": "^6.2.4",
     "babel-plugin-react-transform": "^2.0.2",
+    "babel-plugin-transform-react-constant-elements": "^6.5.0",
+    "babel-plugin-transform-react-inline-elements": "^6.6.5",
+    "babel-plugin-transform-react-remove-prop-types": "^0.2.4",
     "babel-plugin-transform-runtime": "^6.6.0",
     "babel-preset-es2015": "^6.6.0",
     "babel-preset-node5": "^11.0.1",

tools/webpack.config.js

@@ -34,6 +34,19 @@ const GLOBALS = {
 // client-side (client.js) and server-side (server.js) bundles
 // -----------------------------------------------------------------------------
 
+let babelLoaderPlugins = [
+  'transform-runtime',
+];
+
+if (!DEBUG) {
+  babelLoaderPlugins = [
+    ...babelLoaderPlugins,
+    'transform-react-remove-prop-types',
+    'transform-react-constant-elements',
+    'transform-react-inline-elements',
+  ];
+}
+
 const config = {
   context: path.resolve(__dirname, '../src'),
 
@@ -63,9 +76,7 @@ const config = {
             'es2015',
             'stage-0',
           ],
-          plugins: [
-            'transform-runtime',
-          ],
+          plugins: babelLoaderPlugins,
         },
       },
       {