From 5f1cf11e2374f969b16ca4f54f292c8e47c1f844 Mon Sep 17 00:00:00 2001
From: Pete Bacon Darwin <pete@bacondarwin.com>
Date: Mon, 10 Dec 2018 14:38:57 +0000
Subject: [PATCH] chore(utils): do not mutate source arrays

---
 lib/grunt/utils.js | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/lib/grunt/utils.js b/lib/grunt/utils.js
index 06202d91b..79b28bf47 100644
--- a/lib/grunt/utils.js
+++ b/lib/grunt/utils.js
@@ -75,10 +75,8 @@ module.exports = {
   },
 
 
-  wrap: function(src, name) {
-    src.unshift('src/' + name + '.prefix');
-    src.push('src/' + name + '.suffix');
-    return src;
+  wrap(src, name) {
+    return [`src/${name}.prefix`, ...src, `src/${name}.suffix`];
   },