From 30b057fa9cfe7c7567884f6df8e77e97bdcaf141 Mon Sep 17 00:00:00 2001
From: Dylan Vann <dylan.vann@gmail.com>
Date: Wed, 18 Oct 2017 16:31:42 -0700
Subject: [PATCH] Add babel-plugin-transform-exponentiation-operator to
 babel-preset-react-native

Summary:
Adds the dependency to the Babel preset's package.json and enables the plugin only when `**` exists in a source file.

This is https://github.com/facebook/react-native/pull/12339 with merge conflicts resolved and putting the plugin behind a cheaper heuristic.
Closes https://github.com/facebook/react-native/pull/16191

Differential Revision: D6023857

Pulled By: hramos

fbshipit-source-id: 16f4a5f14780c27d2ef95fa7e8d8b611fa992aa0
---
 babel-preset/configs/main.js | 3 +++
 babel-preset/package.json    | 3 ++-
 package.json                 | 1 +
 3 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/babel-preset/configs/main.js b/babel-preset/configs/main.js
index c089b633a..7ba9288c8 100644
--- a/babel-preset/configs/main.js
+++ b/babel-preset/configs/main.js
@@ -57,6 +57,9 @@ const getPreset = (src, options) => {
   if (isNull || src.indexOf('`') !== -1) {
     plugins.push('transform-es2015-template-literals');
   }
+  if (isNull || src.indexOf('**') !== -1) {
+    plugins.push('transform-exponentiation-operator');
+  }
   if (isNull || src.indexOf('Object.assign') !== -1) {
     plugins.push('transform-object-assign');
   }
diff --git a/babel-preset/package.json b/babel-preset/package.json
index 9d4f3495c..77e1090ed 100644
--- a/babel-preset/package.json
+++ b/babel-preset/package.json
@@ -37,12 +37,13 @@
     "babel-plugin-transform-es2015-shorthand-properties": "^6.5.0",
     "babel-plugin-transform-es2015-spread": "^6.5.0",
     "babel-plugin-transform-es2015-template-literals": "^6.5.0",
+    "babel-plugin-transform-exponentiation-operator": "^6.5.0",
     "babel-plugin-transform-flow-strip-types": "^6.5.0",
     "babel-plugin-transform-object-assign": "^6.5.0",
     "babel-plugin-transform-object-rest-spread": "^6.5.0",
     "babel-plugin-transform-react-display-name": "^6.5.0",
-    "babel-plugin-transform-react-jsx-source": "^6.5.0",
     "babel-plugin-transform-react-jsx": "^6.5.0",
+    "babel-plugin-transform-react-jsx-source": "^6.5.0",
     "babel-plugin-transform-regenerator": "^6.5.0",
     "babel-template": "^6.24.1",
     "react-transform-hmr": "^1.0.4"
diff --git a/package.json b/package.json
index ac07ac105..8f4bd7cbb 100644
--- a/package.json
+++ b/package.json
@@ -142,6 +142,7 @@
     "babel-plugin-syntax-trailing-function-commas": "^6.20.0",
     "babel-plugin-transform-async-to-generator": "6.16.0",
     "babel-plugin-transform-class-properties": "^6.18.0",
+    "babel-plugin-transform-exponentiation-operator": "^6.5.0",
     "babel-plugin-transform-flow-strip-types": "^6.21.0",
     "babel-plugin-transform-object-rest-spread": "^6.20.2",
     "babel-register": "^6.24.1",