fix: remove extra semicolons

BekzodIsakov · BekzodIsakov · commit 9ba3fba329b8 · 2023-05-14T16:47:44.000+05:00
diff --git a/Data-Structures/Linked-List/SinglyLinkedList.js b/Data-Structures/Linked-List/SinglyLinkedList.js
@@ -45,7 +45,7 @@ class LinkedList {
 
   // Returns the tail
   tail () {
-    return this.tailNode?.data || null
+    return this.tailNode?.data ?? null
   }
 
   // Return if the list is empty
diff --git a/Data-Structures/Linked-List/test/SinglyLinkedList.test.js b/Data-Structures/Linked-List/test/SinglyLinkedList.test.js
@@ -166,6 +166,10 @@ describe('SinglyLinkedList', () => {
 
     list.addFirst(30)
     expect(list.tail()).toBe(20)
+
+    // check for a falsy tail data
+    list.addLast(false)
+    expect(list.tail()).toBe(false)
   })
 
   it('Check size', () => {

Original file line number	Diff line number	Diff line change
`@@ -45,7 +45,7 @@ class LinkedList {`
`45`	`45`
`46`	`46`	`// Returns the tail`
`47`	`47`	`tail () {`
`48`		`- return this.tailNode?.data \|\| null`
	`48`	`+ return this.tailNode?.data ?? null`
`49`	`49`	`}`
`50`	`50`
`51`	`51`	`// Return if the list is empty`