Replace preset-es2015 by preset-env

Author: xD3VHAX

.babelrc

@@ -1,6 +1,11 @@
 {
   "presets": [
-    "es2015",
+    [
+      "env", {
+      "targets": {
+        "node": "current"
+      }
+    }],
     "react"
   ],
   "plugins": [