Use babel-eslint in the whole project

.eslintrc.js

         // files.
         '__filename': false
     },
+    'parser': 'babel-eslint',
     'parserOptions': {
         'ecmaFeatures': {
             'experimentalObjectRestSpread': true

react/.eslintrc.js

 module.exports = {
     'extends': '../.eslintrc.js',
-    'parser': 'babel-eslint',
     'parserOptions': {
         'ecmaFeatures': {
             'jsx': true