chore: Replace babel-preset-es2015 on babel-preset-env Fixed #931 (#932)

Author: anthony-redFox

.babelrc

@@ -1,5 +1,13 @@
 {
-  "presets": ["es2015", "stage-0", "flow"],
+  "presets": [
+    ["env", {
+      "targets": {
+      "node": 4
+      },
+      "include": ["transform-regenerator"]
+    }],
+    "flow"
+  ],
   "plugins": ["syntax-async-functions"],
   "ignore": [
       "**/default_theme/assets/*"

package.json

@@ -12,7 +12,7 @@
     "babel-generator": "^6.25.0",
     "babel-plugin-system-import-transformer": "3.1.0",
     "babel-plugin-transform-decorators-legacy": "^1.3.4",
-    "babel-preset-es2015": "^6.16.0",
+    "babel-preset-env": "^1.6.0",
     "babel-preset-react": "^6.16.0",
     "babel-preset-stage-0": "^6.16.0",
     "babel-traverse": "^6.16.0",
@@ -141,4 +141,4 @@
       "mime"
     ]
   }
-}
+}

src/input/dependency.js

@@ -38,7 +38,7 @@ function dependencyStream(
         sourceMap: false,
         compact: false,
         presets: [
-          require('babel-preset-es2015'),
+          require('babel-preset-env'),
           require('babel-preset-stage-0'),
           require('babel-preset-react')
         ],