From 9937d6244260bdd96bbab6abf50a5b634503a8b7 Mon Sep 17 00:00:00 2001
From: AmiyahJo <ajones244@gmail.com>
Date: Wed, 23 Oct 2024 14:39:49 +0000
Subject: [PATCH] fix: peek() method in stack.ts if statement

---
 lesson_12/structs_ts/src/stack.ts | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/lesson_12/structs_ts/src/stack.ts b/lesson_12/structs_ts/src/stack.ts
index 1f51ea4e..33d88e96 100644
--- a/lesson_12/structs_ts/src/stack.ts
+++ b/lesson_12/structs_ts/src/stack.ts
@@ -24,14 +24,13 @@ export class Stack {
   }
 
   peek(): number | null {
-    if (this.isEmpty()) {
-      return null;
+    if (this.top === undefined) {
+      throw new Error('Stack is empty');
     } 
-    const currentTop = this.top;
-    return currentTop ? currentTop.val : null;
+    return this.top.val;
   }
 
   isEmpty(): boolean {
-    return this.top === null;
+    return this.top === undefined;
   }
 }