Set up a monorepo with Lerna

packages/react-scripts/scripts/eject.js

@@ -0,0 +1,135 @@
+/**
+ * Copyright (c) 2015-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.
+ */
+
+var createJestConfig = require('./utils/createJestConfig');
+var fs = require('fs');
+var path = require('path');
+var prompt = require('./utils/prompt');
+var rimrafSync = require('rimraf').sync;
+var spawnSync = require('cross-spawn').sync;
+
+prompt(
+  'Are you sure you want to eject? This action is permanent.',
+  false
+).then(shouldEject => {
+  if (!shouldEject) {
+    console.log('Close one! Eject aborted.');
+    process.exit(1);
+  }
+
+  console.log('Ejecting...');
+  console.log();
+
+  var ownPath = path.join(__dirname, '..');
+  var appPath = path.join(ownPath, '..', '..');
+  var files = [
+    path.join('config', 'babel.dev.js'),
+    path.join('config', 'babel.prod.js'),
+    path.join('config', 'flow', 'css.js.flow'),
+    path.join('config', 'flow', 'file.js.flow'),
+    path.join('config', 'eslint.js'),
+    path.join('config', 'paths.js'),
+    path.join('config', 'env.js'),
+    path.join('config', 'polyfills.js'),
+    path.join('config', 'webpack.config.dev.js'),
+    path.join('config', 'webpack.config.prod.js'),
+    path.join('config', 'jest', 'CSSStub.js'),
+    path.join('config', 'jest', 'FileStub.js'),
+    path.join('config', 'jest', 'transform.js'),
+    path.join('scripts', 'build.js'),
+    path.join('scripts', 'start.js'),
+    path.join('scripts', 'utils', 'checkRequiredFiles.js'),
+    path.join('scripts', 'utils', 'chrome.applescript'),
+    path.join('scripts', 'utils', 'prompt.js'),
+    path.join('scripts', 'utils', 'WatchMissingNodeModulesPlugin.js')
+  ];
+
+  // Ensure that the app folder is clean and we won't override any files
+  files.forEach(function(file) {
+    if (fs.existsSync(path.join(appPath, file))) {
+      console.error(
+        '`' + file + '` already exists in your app folder. We cannot ' +
+        'continue as you would lose all the changes in that file or directory. ' +
+        'Please delete it (maybe make a copy for backup) and run this ' +
+        'command again.'
+      );
+      process.exit(1);
+    }
+  });
+
+  // Copy the files over
+  fs.mkdirSync(path.join(appPath, 'config'));
+  fs.mkdirSync(path.join(appPath, 'config', 'flow'));
+  fs.mkdirSync(path.join(appPath, 'config', 'jest'));
+  fs.mkdirSync(path.join(appPath, 'scripts'));
+  fs.mkdirSync(path.join(appPath, 'scripts', 'utils'));
+
+  files.forEach(function(file) {
+    console.log('Copying ' + file + ' to ' + appPath);
+    var content = fs
+      .readFileSync(path.join(ownPath, file), 'utf8')
+      // Remove dead code from .js files on eject
+      .replace(/\/\/ @remove-on-eject-begin([\s\S]*?)\/\/ @remove-on-eject-end/mg, '')
+      // Remove dead code from .applescript files on eject
+      .replace(/-- @remove-on-eject-begin([\s\S]*?)-- @remove-on-eject-end/mg, '')
+      .trim() + '\n';
+    fs.writeFileSync(path.join(appPath, file), content);
+  });
+  console.log();
+
+  var ownPackage = require(path.join(ownPath, 'package.json'));
+  var appPackage = require(path.join(appPath, 'package.json'));
+
+  console.log('Removing dependency: react-scripts');
+  delete appPackage.devDependencies['react-scripts'];
+
+  Object.keys(ownPackage.dependencies).forEach(function (key) {
+    // For some reason optionalDependencies end up in dependencies after install
+    if (ownPackage.optionalDependencies[key]) {
+      return;
+    }
+    console.log('Adding dependency: ' + key);
+    appPackage.devDependencies[key] = ownPackage.dependencies[key];
+  });
+
+  console.log('Updating scripts');
+  delete appPackage.scripts['eject'];
+  Object.keys(appPackage.scripts).forEach(function (key) {
+    appPackage.scripts[key] = appPackage.scripts[key]
+      .replace(/react-scripts test/g, 'jest --watch')
+      .replace(/react-scripts (\w+)/g, 'node scripts/$1.js');
+  });
+
+  // Add Jest config
+  appPackage.jest = createJestConfig(
+    filePath => path.join('<rootDir>', filePath)
+  );
+
+  // Explicitly specify ESLint config path for editor plugins
+  appPackage.eslintConfig = {
+    extends: './config/eslint.js',
+  };
+
+  console.log('Writing package.json');
+  fs.writeFileSync(
+    path.join(appPath, 'package.json'),
+    JSON.stringify(appPackage, null, 2)
+  );
+  console.log();
+
+  console.log('Running npm install...');
+  rimrafSync(ownPath);
+  spawnSync('npm', ['install'], {stdio: 'inherit'});
+  console.log('Ejected successfully!');
+  console.log();
+
+  console.log('Please consider sharing why you ejected in this survey:');
+  console.log('  http://goo.gl/forms/Bi6CZjk1EqsdelXk1');
+  console.log();
+});