added rollup config

package.json

@@ -59,6 +59,11 @@
     "loose-envify": "^1.1.0",
     "object-assign": "^4.1.0",
     "platform": "^1.1.0",
+    "rollup": "^0.33.0",
+    "rollup-plugin-babel": "^2.6.1",
+    "rollup-plugin-node-resolve": "^1.7.1",
+    "rollup-plugin-replace": "^1.1.1",
+    "rollup-plugin-uglify": "^1.0.1",
     "run-sequence": "^1.1.4",
     "through2": "^2.0.0",
     "tmp": "~0.0.28",
@@ -79,7 +84,9 @@
     "lint": "grunt lint",
     "postinstall": "node node_modules/fbjs-scripts/node/check-dev-engines.js package.json",
     "test": "jest",
-    "flow": "flow"
+    "flow": "flow",
+    "rollup:dev": "rollup -c scripts/rollup/rollup.config.dev.js",
+    "rollup:prod": "rollup -c scripts/rollup/rollup.config.prod.js"
   },
   "jest": {
     "modulePathIgnorePatterns": [

scripts/rollup/rollup.config.dev.js

@@ -0,0 +1,35 @@
+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+'use strict';
+
+var babel = require('rollup-plugin-babel');
+var replace = require('rollup-plugin-replace');
+var resolve = require('rollup-plugin-node-resolve');
+
+var babelEs6ModulifyPlugin = require('../babel/transform-es6-modulify');
+
+module.exports = {
+  dest: 'build/react.rollup.dev.js',
+  entry: 'build/modules/ReactUMDEntry.js',
+  moduleName: 'React',
+  format: 'umd',
+  plugins: [
+    babel({
+      babelrc: false,
+      plugins: [babelEs6ModulifyPlugin],
+    }),
+    replace({
+      'process.env.NODE_ENV': JSON.stringify('development'),
+    }),
+    resolve({
+      main: true,
+    }),
+  ],
+  sourceMap: false,
+};

scripts/rollup/rollup.config.prod.js

@@ -0,0 +1,37 @@
+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+'use strict';
+
+var babel = require('rollup-plugin-babel');
+var replace = require('rollup-plugin-replace');
+var resolve = require('rollup-plugin-node-resolve');
+var uglify = require('rollup-plugin-uglify');
+
+var babelEs6ModulifyPlugin = require('../babel/transform-es6-modulify');
+
+module.exports = {
+  dest: 'build/react.rollup.prod.js',
+  entry: 'build/modules/ReactUMDEntry.js',
+  moduleName: 'React',
+  format: 'umd',
+  plugins: [
+    babel({
+      babelrc: false,
+      plugins: [babelEs6ModulifyPlugin],
+    }),
+    replace({
+      'process.env.NODE_ENV': JSON.stringify('production'),
+    }),
+    resolve({
+      main: true,
+    }),
+    uglify(),
+  ],
+  sourceMap: false,
+};