diff --git a/lesson_13/maps_ts/src/list_node.ts b/lesson_13/maps_ts/src/list_node.ts
deleted file mode 100644
index ff131e64b..000000000
--- a/lesson_13/maps_ts/src/list_node.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-export class ListNode {
-  val: number;
-  next?: ListNode;
-
-  constructor(val: number = 0, next?: ListNode) {
-    this.val = val;
-    this.next = next;
-  }
-}
diff --git a/lesson_13/maps_ts/src/stack.ts b/lesson_13/maps_ts/src/stack.ts
deleted file mode 100644
index b931ec0ef..000000000
--- a/lesson_13/maps_ts/src/stack.ts
+++ /dev/null
@@ -1,25 +0,0 @@
-import { ListNode } from './list_node.js';
-
-export class Stack {
-  private top: ListNode | undefined;
-
-  constructor() {
-    this.top = undefined;
-  }
-
-  push(value: number): void {
-    throw new Error('Not implemented');
-  }
-
-  pop(): number | undefined {
-    throw new Error('Not implemented');
-  }
-
-  peek(): number | null {
-    throw new Error('Not implemented');
-  }
-
-  isEmpty(): boolean {
-    throw new Error('Not implemented');
-  }
-}