added possible modification of webpack config

Author: Michal Svrček

packages/babel-preset-react-app/package.json

@@ -1,4 +1,5 @@
 {
+  "private": true,
   "name": "babel-preset-react-app",
   "version": "2.1.0",
   "description": "Babel preset used by Create React App",

packages/create-react-app/package.json

@@ -1,4 +1,5 @@
 {
+  "private": true,
   "name": "create-react-app",
   "version": "1.0.4",
   "keywords": [

packages/eslint-config-react-app/package.json

@@ -1,4 +1,5 @@
 {
+  "private": true,
   "name": "eslint-config-react-app",
   "version": "0.5.1",
   "description": "ESLint configuration used by Create React App",

packages/react-dev-utils/package.json

@@ -1,4 +1,5 @@
 {
+  "private": true,
   "name": "react-dev-utils",
   "version": "0.5.0",
   "description": "Webpack utilities used by Create React App",

packages/react-scripts/config/paths.js

@@ -86,7 +86,8 @@ module.exports = {
   ownNodeModules: resolveApp('node_modules'),
   nodePaths: nodePaths,
   publicUrl: getPublicUrl(resolveApp('package.json')),
-  servedPath: getServedPath(resolveApp('package.json'))
+  servedPath: getServedPath(resolveApp('package.json')),
+  webpackConfig: resolveApp('webpack.config.js'),
 };
 
 // @remove-on-eject-begin
@@ -109,7 +110,8 @@ module.exports = {
   ownNodeModules: resolveOwn('../node_modules'),
   nodePaths: nodePaths,
   publicUrl: getPublicUrl(resolveApp('package.json')),
-  servedPath: getServedPath(resolveApp('package.json'))
+  servedPath: getServedPath(resolveApp('package.json')),
+  webpackConfig: resolveApp('webpack.config.js'),
 };
 
 // config before publish: we're in ./packages/react-scripts/config/
@@ -127,7 +129,8 @@ if (__dirname.indexOf(path.join('packages', 'react-scripts', 'config')) !== -1)
     ownNodeModules: resolveOwn('../node_modules'),
     nodePaths: nodePaths,
     publicUrl: getPublicUrl(resolveOwn('../package.json')),
-    servedPath: getServedPath(resolveOwn('../package.json'))
+    servedPath: getServedPath(resolveOwn('../package.json')),
+    webpackConfig: resolveApp('../template/webpack.config.js'),
   };
 }
 // @remove-on-eject-end

packages/react-scripts/package.json

@@ -1,6 +1,6 @@
 {
-  "name": "react-scripts",
-  "version": "0.9.0",
+  "name": "@svrcekmichal/react-scripts",
+  "version": "0.5.0",
   "description": "Configuration and scripts for Create React App.",
   "repository": "facebookincubator/create-react-app",
   "license": "BSD-3-Clause",

packages/react-scripts/scripts/build.js

@@ -133,6 +133,12 @@ function printErrors(summary, errors) {
 // Create the production build and print the deployment instructions.
 function build(previousSizeMap) {
   console.log('Creating an optimized production build...');
+
+  if(fs.existsSync(paths.webpackConfig)) {
+    console.log(chalk.yellow('Using modified webpack config!'));
+    config = require(paths.webpackConfig)(config, false);
+  }
+
   webpack(config).run((err, stats) => {
     if (err) {
       printErrors('Failed to compile.', [err]);

packages/react-scripts/scripts/start.js

@@ -61,6 +61,12 @@ if (isSmokeTest) {
 }
 
 function setupCompiler(host, port, protocol) {
+
+  if(fs.existsSync(paths.webpackConfig)) {
+    console.log(chalk.yellow('WARNING! You are using modified webpack config!'));
+    config = require(paths.webpackConfig)(config, true);
+  }
+
   // "Compiler" is a low-level interface to Webpack.
   // It lets us listen to some events and provide our own custom messages.
   compiler = webpack(config, handleCompile);