Allow webpack config to accept babel presets & plugins via env variables

Author: philiptzou

packages/react-scripts/config/webpack.config.dev.js

@@ -29,6 +29,10 @@ var publicPath = '/';
 var publicUrl = '';
 // Get enrivonment variables to inject into our app.
 var env = getClientEnvironment(publicUrl);
+var babelPresets = process.env.BABEL_PRESETS || '[]';
+babelPresets = JSON.parse(babelPresets);
+var babelPlugins = process.env.BABEL_PLUGINS || '[]';
+babelPlugins = JSON.parse(babelPlugins);
 
 // This is the development configuration.
 // It is focused on developer experience and fast rebuilds.
@@ -119,7 +123,8 @@ module.exports = {
         query: {
           // @remove-on-eject-begin
           babelrc: false,
-          presets: [require.resolve('babel-preset-react-app')],
+          presets: [require.resolve('babel-preset-react-app')].concat(babelPresets),
+          plugins: babelPlugins,
           // @remove-on-eject-end
           // This is a feature of `babel-loader` for webpack (not Babel itself).
           // It enables caching results in ./node_modules/.cache/react-scripts/

packages/react-scripts/config/webpack.config.prod.js

@@ -46,6 +46,10 @@ var publicPath = ensureSlash(homepagePathname, true);
 var publicUrl = ensureSlash(homepagePathname, false);
 // Get enrivonment variables to inject into our app.
 var env = getClientEnvironment(publicUrl);
+var babelPresets = process.env.BABEL_PRESETS || '[]';
+babelPresets = JSON.parse(babelPresets);
+var babelPlugins = process.env.BABEL_PLUGINS || '[]';
+babelPlugins = JSON.parse(babelPlugins);
 
 // Assert this just to be safe.
 // Development builds of React are slow and not intended for production.
@@ -123,7 +127,8 @@ module.exports = {
         // @remove-on-eject-begin
         query: {
           babelrc: false,
-          presets: [require.resolve('babel-preset-react-app')],
+          presets: [require.resolve('babel-preset-react-app')].concat(babelPresets),
+          plugins: babelPlugins
         },
         // @remove-on-eject-end
       },

packages/react-scripts/package.json

@@ -1,14 +1,14 @@
 {
-  "name": "react-scripts",
+  "name": "@philiptzou/react-scripts",
   "version": "0.6.1",
-  "description": "Configuration and scripts for Create React App.",
-  "repository": "facebookincubator/create-react-app",
+  "description": "Configuration and scripts for Create React App. Customized by Stanford HIVDB team.",
+  "repository": "philiptzou/create-react-app",
   "license": "BSD-3-Clause",
   "engines": {
     "node": ">=4"
   },
   "bugs": {
-    "url": "https://github.com/facebookincubator/create-react-app/issues"
+    "url": "https://github.com/philiptzou/create-react-app/issues"
   },
   "files": [
     ".babelrc",