use cross-env for webpack

Author: Michael Kidder

package.json

@@ -18,8 +18,8 @@
     "test:examples": "babel-node examples/testAll.js",
     "check": "npm run lint && npm run test",
     "build:lib": "babel src --out-dir lib",
-    "build:umd": "webpack src/index.js dist/redux.js --config webpack.config.development.js",
-    "build:umd:min": "webpack src/index.js dist/redux.min.js --config webpack.config.production.js",
+    "build:umd": "cross-env NODE_ENV=development webpack src/index.js dist/redux.js",
+    "build:umd:min": "cross-env NODE_ENV=production webpack src/index.js dist/redux.min.js",
     "build:examples": "babel-node examples/buildAll.js",
     "build": "npm run build:lib && npm run build:umd && npm run build:umd:min",
     "preversion": "npm run clean && npm run check",
@@ -66,6 +66,7 @@
     "babel-core": "^5.6.18",
     "babel-eslint": "^4.1.0",
     "babel-loader": "^5.1.4",
+    "cross-env": "^1.0.7",
     "eslint": "^1.10.3",
     "eslint-config-rackt": "^1.1.1",
     "eslint-plugin-react": "^3.16.1",

webpack.config.base.js

@@ -0,0 +1,37 @@
+'use strict';
+var webpack = require('webpack');
+
+var nodeEnv = process.env.NODE_ENV;
+var config = {
+  module: {
+    loaders: [
+      { test: /\.js$/, loaders: ['babel-loader'], exclude: /node_modules/ }
+    ]
+  },
+  output: {
+    library: 'Redux',
+    libraryTarget: 'umd'
+  },
+  resolve: {
+    extensions: ['', '.js']
+  },
+  plugins : [
+    new webpack.optimize.OccurenceOrderPlugin(),
+    new webpack.DefinePlugin({
+      'process.env.NODE_ENV': JSON.stringify(nodeEnv)
+    })    
+  ]
+};
+
+if (nodeEnv == 'production') {
+  config.plugins.push(
+    new webpack.optimize.UglifyJsPlugin({
+      compressor: {
+        screw_ie8: true,
+        warnings: false
+      }
+    })
+  )
+}
+
+module.exports = config;