diff --git a/babel-preset/configs/main.js b/babel-preset/configs/main.js
index 7da378c61..da3435705 100644
--- a/babel-preset/configs/main.js
+++ b/babel-preset/configs/main.js
@@ -40,8 +40,6 @@ var preset = {
     ['transform-es2015-for-of', { loose: true }],
     require('../transforms/transform-symbol-member'),
   ]),
-  retainLines: true,
-  sourceMaps: false,
 };
 
 var env = process.env.BABEL_ENV || process.env.NODE_ENV;
diff --git a/babel-preset/package.json b/babel-preset/package.json
index 7e88fee5d..7ccd20627 100644
--- a/babel-preset/package.json
+++ b/babel-preset/package.json
@@ -1,6 +1,6 @@
 {
   "name": "babel-preset-react-native",
-  "version": "1.9.2",
+  "version": "2.0.0-alpha.1",
   "description": "Babel preset for React Native applications",
   "main": "index.js",
   "repository": "https://github.com/facebook/react-native/tree/master/babel-preset",
diff --git a/jest/preprocessor.js b/jest/preprocessor.js
index b1a71d7b0..bd84bd5b8 100644
--- a/jest/preprocessor.js
+++ b/jest/preprocessor.js
@@ -39,6 +39,7 @@ module.exports = {
         inlineRequires: true,
         platform: '',
         projectRoot: '',
+        retainLines: true,
       },
       src,
     }).code;