Remove last node of the linked list in typescript

Ts program for Remove last node of the linked list. Here more solutions.

/*
    TypeScript program for
    Delete the last node of singly linked list
*/
// Linked list node
class LinkNode
{
	public data: number;
	public next: LinkNode;
	constructor(data: number)
	{
		this.data = data;
		this.next = null;
	}
}
class SingleLL
{
	public head: LinkNode;
	public tail: LinkNode;
	constructor()
	{
		this.head = null;
		this.tail = null;
	}
	// Add new node at the end of linked list
	public addNode(value: number)
	{
		// Create a new node
		var node = new LinkNode(value);
		if (this.head == null)
		{
			this.head = node;
		}
		else
		{
			this.tail.next = node;
		}
		this.tail = node;
	}
	// Display linked list element
	public display()
	{
		if (this.head == null)
		{
			console.log("Empty Linked List");
			return;
		}
		var temp = this.head;
		// iterating linked list elements
		while (temp != null)
		{
			console.log(temp.data + " → ");
			// Visit to next node
			temp = temp.next;
		}
		console.log("NULL");
	}
	// Delete last node of singly linked list
	public deleteLastNode()
	{
		if (this.head == null)
		{
			console.log("Empty Linked List");
			return;
		}
		else
		{
			var temp = this.head;
			var find: LinkNode = null;
			// Find second last node
			while (temp.next != null)
			{
				find = temp;
				temp = temp.next;
			}
			if (find == null)
			{
				// Delete head node of linked list
				this.head = null;
				this.tail = null;
			}
			else
			{
				// Set new last node
				this.tail = find;
				find.next = null;
			}
		}
	}
	public static main()
	{
		var sll = new SingleLL();
		// Linked list
		// 1 → 2 → 3 → 4 → 5 → 6 → NULL
		sll.addNode(1);
		sll.addNode(2);
		sll.addNode(3);
		sll.addNode(4);
		sll.addNode(5);
		sll.addNode(6);
		console.log("Before Delete ");
		sll.display();
		sll.deleteLastNode();
		console.log("After Delete ");
		sll.display();
	}
}
SingleLL.main();
/*
 file : code.ts
 tsc --target es6 code.ts
 node code.js
 */

Output

Before Delete
1 →
2 →
3 →
4 →
5 →
6 →
NULL
After Delete
1 →
2 →
3 →
4 →
5 →
NULL