Add transform-es2015-function-name to the react-native babel preset. Fixes #6716

Summary:Stateless function components (at least those using arrow functions) are not assigned names when this transform is omitted.

Rebased against master and kept the original author from #6717

cc martinbigio bestander
Closes https://github.com/facebook/react-native/pull/6794

Differential Revision: D3133791

Pulled By: mkonicek

fb-gh-sync-id: bb7790ad17d1520da5ab95580548d29d0c0f397d
fbshipit-source-id: bb7790ad17d1520da5ab95580548d29d0c0f397d

babel-preset/configs/main.js

@@ -18,6 +18,7 @@ module.exports = {
     'syntax-class-properties',
     'syntax-trailing-function-commas',
     'transform-class-properties',
+    'transform-es2015-function-name',
     'transform-es2015-arrow-functions',
     'transform-es2015-block-scoping',
     'transform-es2015-classes',

babel-preset/package.json

@@ -22,6 +22,7 @@
     "babel-plugin-syntax-jsx": "^6.5.0",
     "babel-plugin-syntax-trailing-function-commas": "^6.5.0",
     "babel-plugin-transform-class-properties": "^6.5.0",
+    "babel-plugin-transform-es2015-function-name": "^6.5.0",
     "babel-plugin-transform-es2015-arrow-functions": "^6.5.0",
     "babel-plugin-transform-es2015-block-scoping": "^6.5.0",
     "babel-plugin-transform-es2015-classes": "^6.5.0",

babel-preset/plugins.js

@@ -14,6 +14,7 @@ module.exports = {
   'babel-plugin-syntax-class-properties': require('babel-plugin-syntax-class-properties'),
   'babel-plugin-syntax-trailing-function-commas': require('babel-plugin-syntax-trailing-function-commas'),
   'babel-plugin-transform-class-properties': require('babel-plugin-transform-class-properties'),
+  'babel-plugin-transform-es2015-function-name': require('babel-plugin-transform-es2015-function-name'),
   'babel-plugin-transform-es2015-arrow-functions': require('babel-plugin-transform-es2015-arrow-functions'),
   'babel-plugin-transform-es2015-block-scoping': require('babel-plugin-transform-es2015-block-scoping'),
   'babel-plugin-transform-es2015-classes': require('babel-plugin-transform-es2015-classes'),