pref: remove unnecessary regexp for trust proxy

History.md

@@ -4,6 +4,7 @@ unreleased
   * deps: accepts@~1.3.8
     - deps: mime-types@~2.1.34
     - deps: negotiator@0.6.3
+  * pref: remove unnecessary regexp for trust proxy
 
 4.17.2 / 2021-12-16
 ===================

lib/utils.js

@@ -228,7 +228,8 @@ exports.compileTrust = function(val) {
 
   if (typeof val === 'string') {
     // Support comma-separated values
-    val = val.split(/ *, */);
+    val = val.split(',')
+      .map(function (v) { return v.trim() })
   }
 
   return proxyaddr.compile(val || []);