Fix ESLint 5 deprecation warning

feross · feross · commit 6a89a51a2a09 · 2018-05-04T22:40:57.000-07:00
diff --git a/eslintrc.json b/eslintrc.json
@@ -1,8 +1,7 @@
 {
   "parserOptions": {
-    "ecmaVersion": 8,
+    "ecmaVersion": 9,
     "ecmaFeatures": {
-      "experimentalObjectRestSpread": true,
       "jsx": true
     },
     "sourceType": "module"
