typescript recursive interface test

gistfile1.as

interface LinkedListNode { 
	data:any; 
	next: LinkedListNode;
}

class MyNode {
	data: string;
	next: MyNode;
	constructor(data: string, next:MyNode) {
		this.data = data;
		this.next = next;
	}
}

function getnext(node: LinkedListNode) {
	return node.next;
}
var x:MyNode = new MyNode("lol", null);
console.log(getnext(x));