diff --git a/TypeScript/app/gilded-rose.ts b/TypeScript/app/gilded-rose.ts
index 8ca32149..06fa865f 100644
--- a/TypeScript/app/gilded-rose.ts
+++ b/TypeScript/app/gilded-rose.ts
@@ -1,3 +1,4 @@
+import { assert } from "console";
 import { ItemNames, MAX_ITEM_QUALITY } from "./constants";
 
 export class Item {
@@ -20,47 +21,15 @@ export class GildedRose {
   }
 
   private updateAgedBrieItem(item: Item) {
-    if (
-      item.name != ItemNames.AGED_BRIE &&
-      item.name != ItemNames.BACKSTAGE_PASSES
-    ) {
-      if (item.quality > 0) {
-        if (item.name != ItemNames.SULFURAS) {
-          item.quality = item.quality - 1;
-        }
-      }
-    } else if (item.quality < MAX_ITEM_QUALITY) {
+    assert(item.name == ItemNames.AGED_BRIE);
+    if (item.quality < MAX_ITEM_QUALITY) {
       item.quality = item.quality + 1;
-      if (item.name == ItemNames.BACKSTAGE_PASSES) {
-        if (item.sellIn < 11) {
-          if (item.quality < MAX_ITEM_QUALITY) {
-            item.quality = item.quality + 1;
-          }
-        }
-        if (item.sellIn < 6) {
-          if (item.quality < MAX_ITEM_QUALITY) {
-            item.quality = item.quality + 1;
-          }
-        }
-      }
     }
     if (item.name != ItemNames.SULFURAS) {
       item.sellIn = item.sellIn - 1;
     }
-    if (item.sellIn < 0) {
-      if (item.name != ItemNames.AGED_BRIE) {
-        if (item.name != ItemNames.BACKSTAGE_PASSES) {
-          if (item.quality > 0) {
-            if (item.name != ItemNames.SULFURAS) {
-              item.quality = item.quality - 1;
-            }
-          }
-        } else {
-          item.quality = 0;
-        }
-      } else if (item.quality < MAX_ITEM_QUALITY) {
-        item.quality = item.quality + 1;
-      }
+    if (item.sellIn < 0 && item.quality < MAX_ITEM_QUALITY) {
+      item.quality = item.quality + 1;
     }
   }