From bf9b52fe0e29497b4b1d3e17a49d705df6a61a8b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gr=C3=A9goire=20Delattre?= <gregoire.delattre@gmail.com>
Date: Tue, 29 Nov 2016 21:37:30 +0100
Subject: [PATCH] Optimize webpack for production builds

---
 README.md         |  6 ++++++
 package.json      |  3 ++-
 webpack.config.js | 15 ++++++++++++---
 3 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index 4130bbc..4447e2d 100644
--- a/README.md
+++ b/README.md
@@ -78,3 +78,9 @@ make test
 ```
 make clean
 ```
+
+## Production build
+
+```
+yarn build
+```
diff --git a/package.json b/package.json
index ad355fd..ead9591 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,8 @@
 {
     "name": "canape",
     "scripts": {
-        "start": "./node_modules/webpack/bin/webpack.js -d --progress --colors --watch"
+        "start": "NODE_ENV=development ./node_modules/webpack/bin/webpack.js -d --progress --colors --watch",
+        "build": "NODE_ENV=production ./node_modules/webpack/bin/webpack.js -p --progress --colors"
     },
     "dependencies": {
         "babel-polyfill": "^6.16.0",
diff --git a/webpack.config.js b/webpack.config.js
index a283bf1..0b62a0f 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -4,13 +4,12 @@ var path = require("path");
 var BUILD_DIR = path.resolve(__dirname, 'build/public/');
 var SRC_DIR = path.resolve(__dirname, 'src/public/js');
 
-module.exports = {
+const config = {
   entry: path.join(SRC_DIR, 'app.js'),
   output: {
     path: BUILD_DIR,
     filename: 'js/app.js',
   },
-  devtool: 'source-map',
   module: {
     loaders: [
       {
@@ -39,10 +38,20 @@ module.exports = {
   },
   plugins: [
     new webpack.DefinePlugin({
-      'process.env.NODE_ENV': JSON.stringify('development')
+      'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV)
     })
   ],
   resolve: {
     extensions: ['', '.js', '.jsx']
   },
 };
+
+if (process.env.NODE_ENV === 'production') {
+  config.plugins.push(
+    new webpack.optimize.UglifyJsPlugin()
+  )
+} else {
+  config.devtool = "#cheap-module-source-map"
+}
+
+module.exports = config;