url: replaced slice with at

PR-URL: #59181
Reviewed-By: Jordan Harband <ljharb@gmail.com>
Reviewed-By: Zeyu "Alex" Yang <himself65@outlook.com>
Reviewed-By: Daniel Lemire <daniel@lemire.me>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

Author: Connormiha

lib/url.js

@@ -22,10 +22,12 @@
 'use strict';
 
 const{
+ ArrayPrototypeJoin,
  Boolean,
  Int8Array,
  ObjectAssign,
  ObjectKeys,
+ StringPrototypeAt,
  StringPrototypeCharCodeAt,
  StringPrototypeIndexOf,
  StringPrototypeReplaceAll,
@@ -923,7 +925,7 @@ Url.prototype.resolveObject = function resolveObject(relative) {
 // If a url ENDs in . or .., then it must get a trailing slash.
 // however, if it ends in anything else non-slashy,
 // then it must NOT get a trailing slash.
-letlast=srcPath.slice(-1)[0];
+letlast=srcPath[srcPath.length-1];
 consthasTrailingSlash=(
 ((result.host||relative.host||srcPath.length>1)&&
 (last==='.'||last==='..'))||last==='');
@@ -956,7 +958,7 @@ Url.prototype.resolveObject = function resolveObject(relative) {
 srcPath.unshift('');
 }
 
-if(hasTrailingSlash&&(srcPath.join('/').slice(-1)!=='/')){
+if(hasTrailingSlash&&StringPrototypeAt(ArrayPrototypeJoin(srcPath,'/'),-1)!=='/'){
 srcPath.push('');
 }