lib: replace String global with primordials

PR-URL: https://github.com/nodejs/node/pull/35397
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Pranshu Srivastava <rexagod@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: Ujjwal Sharma <ryzokuken@disroot.org>

1 files changed, 14 insertions, 4 deletions

diff --git a/lib/tls.js b/lib/tls.js
index 2ccbe409c96..a46031ad7da 100644
--- a/lib/tls.js
+++ b/lib/tls.js
@@ -26,6 +26,10 @@ const {
   ArrayIsArray,
   ObjectDefineProperty,
   ObjectFreeze,
+  StringFromCharCode,
+  StringPrototypeCharCodeAt,
+  StringPrototypeReplace,
+  StringPrototypeSplit,
 } = primordials;
 
 const {
@@ -137,11 +141,17 @@ function unfqdn(host) {
   return host.replace(/[.]$/, '');
 }
 
+// String#toLowerCase() is locale-sensitive so we use
+// a conservative version that only lowercases A-Z.
+function toLowerCase(c) {
+  return StringFromCharCode(32 + StringPrototypeCharCodeAt(c, 0));
+}
+
 function splitHost(host) {
-  // String#toLowerCase() is locale-sensitive so we use
-  // a conservative version that only lowercases A-Z.
-  const replacer = (c) => String.fromCharCode(32 + c.charCodeAt(0));
-  return unfqdn(host).replace(/[A-Z]/g, replacer).split('.');
+  return StringPrototypeSplit(
+    StringPrototypeReplace(unfqdn(host), /[A-Z]/g, toLowerCase),
+    '.'
+  );
 }
 
 function check(hostParts, pattern, wildcards) {