infra(eslint): bump to ecma 9

addyosmani · addyosmani · commit 6336333c0887 · 2018-12-06T11:41:28.000-08:00
diff --git a/.eslintrc.js b/.eslintrc.js
@@ -6,7 +6,7 @@ module.exports = {
     },
     parserOptions: {
         sourceType: 'module',
-        ecmaVersion: 8
+        ecmaVersion: 9
     },
     extends: 'google',
     rules: {
