diff --git a/packages/babel-preset-react-app/index.js b/packages/babel-preset-react-app/index.js
index 34e9efabb72..1cc7f5c8c0e 100644
--- a/packages/babel-preset-react-app/index.js
+++ b/packages/babel-preset-react-app/index.js
@@ -10,65 +10,69 @@
 
 var path = require('path');
 
-module.exports = {
-  presets: [
-    // Latest stable ECMAScript features
-    require.resolve('babel-preset-latest'),
-    // JSX, Flow
-    require.resolve('babel-preset-react')
-  ],
-  plugins: [
-    // class { handleClick = () => { } }
-    require.resolve('babel-plugin-transform-class-properties'),
-    // { ...todo, completed: true }
-    require.resolve('babel-plugin-transform-object-rest-spread'),
-    // function* () { yield 42; yield 43; }
-    [require.resolve('babel-plugin-transform-regenerator'), {
-      // Async functions are converted to generators by babel-preset-latest
-      async: false
-    }],
-    // Polyfills the runtime needed for async/await and generators
-    [require.resolve('babel-plugin-transform-runtime'), {
-      helpers: false,
-      polyfill: false,
-      regenerator: true,
-      // Resolve the Babel runtime relative to the config.
-      moduleName: path.dirname(require.resolve('babel-runtime/package'))
-    }]
-  ]
-};
+module.exports = function(context, opts) {
+  var out = {
+    presets: [
+      // Latest stable ECMAScript features
+      [require.resolve('babel-preset-latest'), opts],
+      // JSX, Flow
+      require.resolve('babel-preset-react')
+    ],
+    plugins: [
+      // class { handleClick = () => { } }
+      require.resolve('babel-plugin-transform-class-properties'),
+      // { ...todo, completed: true }
+      require.resolve('babel-plugin-transform-object-rest-spread'),
+      // function* () { yield 42; yield 43; }
+      [require.resolve('babel-plugin-transform-regenerator'), {
+        // Async functions are converted to generators by babel-preset-latest
+        async: false
+      }],
+      // Polyfills the runtime needed for async/await and generators
+      [require.resolve('babel-plugin-transform-runtime'), {
+        helpers: false,
+        polyfill: false,
+        regenerator: true,
+        // Resolve the Babel runtime relative to the config.
+        moduleName: path.dirname(require.resolve('babel-runtime/package'))
+      }]
+    ]
+  };
 
-// This is similar to how `env` works in Babel:
-// https://babeljs.io/docs/usage/babelrc/#env-option
-// We are not using `env` because it’s ignored in versions > babel-core@6.10.4:
-// https://github.com/babel/babel/issues/4539
-// https://github.com/facebookincubator/create-react-app/issues/720
-// It’s also nice that we can enforce `NODE_ENV` being specified.
-var env = process.env.BABEL_ENV || process.env.NODE_ENV;
-if (env !== 'development' && env !== 'test' && env !== 'production') {
-  throw new Error(
-    'Using `babel-preset-react-app` requires that you specify `NODE_ENV` or '+
-    '`BABEL_ENV` environment variables. Valid values are "development", ' +
-    '"test", and "production". Instead, received: ' + JSON.stringify(env) + '.'
-  );
-}
-var plugins = module.exports.plugins;
-if (env === 'development' || env === 'test') {
-  plugins.push.apply(plugins, [
-    // Adds component stack to warning messages
-    require.resolve('babel-plugin-transform-react-jsx-source'),
-    // Adds __self attribute to JSX which React will use for some warnings
-    require.resolve('babel-plugin-transform-react-jsx-self')
-  ]);
-}
-if (env === 'production') {
-  // Optimization: hoist JSX that never changes out of render()
-  // Disabled because of issues:
-  // * https://github.com/facebookincubator/create-react-app/issues/525
-  // * https://phabricator.babeljs.io/search/query/pCNlnC2xzwzx/
-  // * https://github.com/babel/babel/issues/4516
-  // TODO: Enable again when these issues are resolved.
-  // plugins.push.apply(plugins, [
-  //   require.resolve('babel-plugin-transform-react-constant-elements')
-  // ]);
+  // This is similar to how `env` works in Babel:
+  // https://babeljs.io/docs/usage/babelrc/#env-option
+  // We are not using `env` because it’s ignored in versions > babel-core@6.10.4:
+  // https://github.com/babel/babel/issues/4539
+  // https://github.com/facebookincubator/create-react-app/issues/720
+  // It’s also nice that we can enforce `NODE_ENV` being specified.
+  var env = process.env.BABEL_ENV || process.env.NODE_ENV;
+  if (env !== 'development' && env !== 'test' && env !== 'production') {
+    throw new Error(
+      'Using `babel-preset-react-app` requires that you specify `NODE_ENV` or '+
+      '`BABEL_ENV` environment variables. Valid values are "development", ' +
+      '"test", and "production". Instead, received: ' + JSON.stringify(env) + '.'
+    );
+  }
+  var plugins = out.plugins;
+  if (env === 'development' || env === 'test') {
+    plugins.push.apply(plugins, [
+      // Adds component stack to warning messages
+      require.resolve('babel-plugin-transform-react-jsx-source'),
+      // Adds __self attribute to JSX which React will use for some warnings
+      require.resolve('babel-plugin-transform-react-jsx-self')
+    ]);
+  }
+  if (env === 'production') {
+    // Optimization: hoist JSX that never changes out of render()
+    // Disabled because of issues:
+    // * https://github.com/facebookincubator/create-react-app/issues/525
+    // * https://phabricator.babeljs.io/search/query/pCNlnC2xzwzx/
+    // * https://github.com/babel/babel/issues/4516
+    // TODO: Enable again when these issues are resolved.
+    // plugins.push.apply(plugins, [
+    //   require.resolve('babel-plugin-transform-react-constant-elements')
+    // ]);
+  }
+
+  return out;
 }