Resolve regenerator runtime relative to react-scripts (#2175)

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

@@ -8,8 +8,6 @@
  */
 'use strict';
 
-var path = require('path');
-
 const plugins = [
   // class { handleClick = () => { } }
   require.resolve('babel-plugin-transform-class-properties'),
@@ -36,8 +34,6 @@ const plugins = [
       helpers: false,
       polyfill: false,
       regenerator: true,
-      // Resolve the Babel runtime relative to the config.
-      moduleName: path.dirname(require.resolve('babel-runtime/package')),
     },
   ],
 ];

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

@@ -22,7 +22,9 @@
     "babel-plugin-transform-regenerator": "6.24.1",
     "babel-plugin-transform-runtime": "6.23.0",
     "babel-preset-env": "1.4.0",
-    "babel-preset-react": "6.24.1",
-    "babel-runtime": "6.23.0"
+    "babel-preset-react": "6.24.1"
+  },
+  "peerDependencies": {
+    "babel-runtime": "^6.23.0"
   }
 }