Add LinkedList.

src/data-structures/linked-list/LinkedList.js

@@ -1,4 +1,4 @@
-import Node from './Node';
+import LinkedListNode from './LinkedListNode';
 
 export default class LinkedList {
   constructor() {
@@ -6,7 +6,7 @@ export default class LinkedList {
   }
 
   append(value) {
-    const newNode = new Node(value);
+    const newNode = new LinkedListNode(value);
 
     // If there is no head yet let's make new node a head.
     if (!this.head) {
@@ -28,8 +28,8 @@ export default class LinkedList {
   }
 
   prepend(value) {
-    const newNode = new Node(value);
+    const newNode = new LinkedListNode(value, this.head);
-    this.head = new Node(value, this.head);
+    this.head = newNode;
 
     return newNode;
   }

src/data-structures/linked-list/LinkedListNode.js

@@ -1,4 +1,4 @@
-export default class Node {
+export default class LinkedListNode {
   constructor(value, next = null) {
     this.value = value;
     this.next = next;

src/data-structures/linked-list/__test__/LinkedListNode.test.js

@@ -1,8 +1,8 @@
-import Node from '../Node';
+import LinkedListNode from '../LinkedListNode';
 
-describe('Node', () => {
+describe('LinkedListNode', () => {
   it('should create list node with value', () => {
-    const node = new Node(1);
+    const node = new LinkedListNode(1);
     expect(node.value).toBe(1);
     expect(node.next).toBeNull();
   });