chore(babel): Add babel-preset-stage-0

Author: bitIO

package-lock.json

@@ -48,6 +48,7 @@
   },
   "devDependencies": {
     "babel-cli": "^6.26.0",
+    "babel-preset-stage-0": "^6.24.1",
     "commitizen": "^2.9.6",
     "cz-conventional-changelog": "^2.1.0",
     "eslint": "^4.19.1",
@@ -60,7 +61,10 @@
   },
   "babel": {
     "plugins": [],
-    "presets": "env"
+    "presets": [
+      "env",
+      "stage-0"
+    ]
   },
   "eslintConfig": {
     "extends": "airbnb-base",