Remove runtime alias hack

packages/babel-preset-react-app/create.js

@@ -6,6 +6,8 @@
  */
 'use strict';
 
+const path = require('path');
+
 const validateBoolOption = (name, value, defaultValue) => {
   if (typeof value === 'undefined') {
     value = defaultValue;
@@ -26,8 +28,21 @@ module.exports = function(api, opts, env) {
   var isEnvDevelopment = env === 'development';
   var isEnvProduction = env === 'production';
   var isEnvTest = env === 'test';
+
   var isFlowEnabled = validateBoolOption('flow', opts.flow, true);
   var areHelpersEnabled = validateBoolOption('helpers', opts.helpers, true);
+  var useAbsoluteRuntime = validateBoolOption(
+    'absoluteRuntime',
+    opts.absoluteRuntime,
+    true
+  );
+
+  var absoluteRuntimePath = undefined;
+  if (useAbsoluteRuntime) {
+    absoluteRuntimePath = path.dirname(
+      require.resolve('@babel/runtime/package.json')
+    );
+  }
 
   if (!isEnvDevelopment && !isEnvProduction && !isEnvTest) {
     throw new Error(
@@ -120,6 +135,10 @@ module.exports = function(api, opts, env) {
           // We should turn this on once the lowest version of Node LTS
           // supports ES Modules.
           useESModules: isEnvDevelopment || isEnvProduction,
+          // Undocumented option that lets us encapsulate our runtime, ensuring
+          // the correct version is used
+          // https://github.com/babel/babel/blob/090c364a90fe73d36a30707fc612ce037bdbbb24/packages/babel-plugin-transform-runtime/src/index.js#L35-L42
+          absoluteRuntime: absoluteRuntimePath,
         },
       ],
       isEnvProduction && [

packages/babel-preset-react-app/dependencies.js

@@ -6,6 +6,8 @@
  */
 'use strict';
 
+const path = require('path');
+
 const validateBoolOption = (name, value, defaultValue) => {
   if (typeof value === 'undefined') {
     value = defaultValue;
@@ -33,7 +35,21 @@ module.exports = function(api, opts) {
   var isEnvDevelopment = env === 'development';
   var isEnvProduction = env === 'production';
   var isEnvTest = env === 'test';
+
   var areHelpersEnabled = validateBoolOption('helpers', opts.helpers, false);
+  var useAbsoluteRuntime = validateBoolOption(
+    'absoluteRuntime',
+    opts.absoluteRuntime,
+    true
+  );
+
+  var absoluteRuntimePath = undefined;
+  if (useAbsoluteRuntime) {
+    absoluteRuntimePath = path.dirname(
+      require.resolve('@babel/runtime/package.json')
+    );
+  }
+
   if (!isEnvDevelopment && !isEnvProduction && !isEnvTest) {
     throw new Error(
       'Using `babel-preset-react-app` requires that you specify `NODE_ENV` or ' +
@@ -95,6 +111,10 @@ module.exports = function(api, opts) {
           // We should turn this on once the lowest version of Node LTS
           // supports ES Modules.
           useESModules: isEnvDevelopment || isEnvProduction,
+          // Undocumented option that lets us encapsulate our runtime, ensuring
+          // the correct version is used
+          // https://github.com/babel/babel/blob/090c364a90fe73d36a30707fc612ce037bdbbb24/packages/babel-plugin-transform-runtime/src/index.js#L35-L42
+          absoluteRuntime: absoluteRuntimePath,
         },
       ],
       // Adds syntax support for import()

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

@@ -30,6 +30,7 @@
     "@babel/preset-env": "7.1.0",
     "@babel/preset-flow": "7.0.0",
     "@babel/preset-react": "7.0.0",
+    "@babel/runtime": "7.0.0",
     "babel-loader": "8.0.2",
     "babel-plugin-macros": "2.4.2",
     "babel-plugin-transform-dynamic-import": "2.1.0",

packages/react-error-overlay/package.json

@@ -32,7 +32,6 @@
   "devDependencies": {
     "@babel/code-frame": "7.0.0",
     "@babel/core": "7.1.0",
-    "@babel/runtime": "7.0.0",
     "anser": "1.4.7",
     "babel-core": "7.0.0-bridge.0",
     "babel-eslint": "9.0.0",

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

@@ -144,15 +144,6 @@ module.exports = {
     // for React Native Web.
     extensions: ['.web.js', '.js', '.json', '.web.jsx', '.jsx'],
     alias: {
-      // @remove-on-eject-begin
-      // Resolve Babel runtime relative to react-scripts.
-      // It usually still works on npm 3 without this but it would be
-      // unfortunate to rely on, as react-scripts could be symlinked,
-      // and thus @babel/runtime might not be resolvable from the source.
-      '@babel/runtime': path.dirname(
-        require.resolve('@babel/runtime/package.json')
-      ),
-      // @remove-on-eject-end
       // Support React Native Web
       // https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
       'react-native': 'react-native-web',

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

@@ -199,15 +199,6 @@ module.exports = {
     // for React Native Web.
     extensions: ['.web.js', '.js', '.json', '.web.jsx', '.jsx'],
     alias: {
-      // @remove-on-eject-begin
-      // Resolve Babel runtime relative to react-scripts.
-      // It usually still works on npm 3 without this but it would be
-      // unfortunate to rely on, as react-scripts could be symlinked,
-      // and thus @babel/runtime might not be resolvable from the source.
-      '@babel/runtime': path.dirname(
-        require.resolve('@babel/runtime/package.json')
-      ),
-      // @remove-on-eject-end
       // Support React Native Web
       // https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
       'react-native': 'react-native-web',

packages/react-scripts/package.json

@@ -22,7 +22,6 @@
   },
   "dependencies": {
     "@babel/core": "7.1.0",
-    "@babel/runtime": "7.0.0",
     "@svgr/webpack": "2.4.1",
     "babel-core": "7.0.0-bridge.0",
     "babel-eslint": "9.0.0",