From 6ff0e394a911991930b2c477f7a70691798e1a59 Mon Sep 17 00:00:00 2001
From: Andreas Lind <andreas.lind@peakon.com>
Date: Wed, 1 Aug 2018 15:46:47 +0200
Subject: [PATCH] Use String#slice instead of #substr

https://github.com/ljharb/qs/pull/268#discussion_r206742835
---
 lib/utils.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/utils.js b/lib/utils.js
index f513cca9..7390c9ef 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -132,7 +132,7 @@ var encode = function encode(str, defaultEncoder, charset) {
 
     if (charset === 'iso-8859-1') {
         return escape(string).replace(/%u[0-9a-f]{4}/gi, function ($0) {
-            return '%26%23' + parseInt($0.substr(2), 16) + '%3B';
+            return '%26%23' + parseInt($0.slice(2), 16) + '%3B';
         });
     }