From 0b2773977e1b49b2fae998c6ce41e8a5f5f105b3 Mon Sep 17 00:00:00 2001
From: AntonFof <fanton81@gmail.com>
Date: Sat, 29 Mar 2025 15:49:27 +0200
Subject: [PATCH 1/2] mySolution

---
 src/arrayMethodJoin.js | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/src/arrayMethodJoin.js b/src/arrayMethodJoin.js
index 3a62201c..35557402 100644
--- a/src/arrayMethodJoin.js
+++ b/src/arrayMethodJoin.js
@@ -4,8 +4,20 @@
  * Implement method join
  */
 function applyCustomJoin() {
-  [].__proto__.join2 = function(separator) {
-    // write code here
+  [].__proto__.join2 = function(separator = ',') {
+    let string = '';
+
+    for (let i = 0; i < this.length; i++) {
+      if (this[i] !== null && this[i] !== undefined) {
+        string += this[i];
+      }
+
+      if (i !== this.length - 1) {
+        string += separator;
+      }
+    }
+
+    return string;
   };
 }
 

From 538b370bbbd1e33ce846bdcd65b95f5a5f12a34f Mon Sep 17 00:00:00 2001
From: AntonFof <fanton81@gmail.com>
Date: Sat, 29 Mar 2025 16:12:46 +0200
Subject: [PATCH 2/2] mySolution

---
 src/arrayMethodJoin.js | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/src/arrayMethodJoin.js b/src/arrayMethodJoin.js
index 35557402..ba32a6ad 100644
--- a/src/arrayMethodJoin.js
+++ b/src/arrayMethodJoin.js
@@ -4,20 +4,25 @@
  * Implement method join
  */
 function applyCustomJoin() {
-  [].__proto__.join2 = function(separator = ',') {
-    let string = '';
+  [].__proto__.join2 = function(separator) {
+    let result = '';
+
+    if (separator === undefined) {
+      // eslint-disable-next-line no-param-reassign
+      separator = ',';
+    }
 
     for (let i = 0; i < this.length; i++) {
       if (this[i] !== null && this[i] !== undefined) {
-        string += this[i];
+        result += this[i];
       }
 
       if (i !== this.length - 1) {
-        string += separator;
+        result += separator;
       }
     }
 
-    return string;
+    return result;
   };
 }