From 7ce00de064dc042fb39b540fea7265075ef56dd5 Mon Sep 17 00:00:00 2001
From: Douglas Crockford <douglas@crockford.com>
Date: Wed, 19 Aug 2015 09:40:12 -0700
Subject: [PATCH] es6

---
 jslint.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/jslint.js b/jslint.js
index 3e938215d..67ae1577f 100644
--- a/jslint.js
+++ b/jslint.js
@@ -2814,6 +2814,9 @@ var jslint = (function JSLint() {
                         value = name;
                         break;
                     case '(':
+                        if (!option.es6 && typeof extra !== 'string') {
+                            warn('es6');
+                        }
                         value = do_function({
                             arity: 'unary',
                             from: name.from,