diff --git a/build.ts b/build.ts
index 1c34eaa..39db8fa 100644
--- a/build.ts
+++ b/build.ts
@@ -4,6 +4,7 @@ import { parseArgs } from "node:util";
 import { sys } from "typescript";
 import txtScriptHeader from "./src/assets/header_script.txt" with { type: "text" };
 import txtMetaHeader from "./src/assets/header_meta.txt" with { type: "text" };
+import { assert } from "node:console";
 
 enum BuildTarget {
     ALL = 'all',
@@ -24,6 +25,8 @@ const postProcess = (str: string): string => {
     // Add ADDITIONAL CODE block
     str = str.replace('var DEFAULT_FLAGS', '\n/* ADDITIONAL CODE */\n\nvar DEFAULT_FLAGS');
 
+    assert(str.includes('/* ADDITIONAL CODE */'));
+
     return str;
 }
 
diff --git a/bun.lockb b/bun.lockb
index c727382..0931019 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/package.json b/package.json
index a155409..d82cf54 100644
--- a/package.json
+++ b/package.json
@@ -6,8 +6,8 @@
     "build": "build.ts"
   },
   "devDependencies": {
-    "@types/bun": "^1.1.5",
-    "@types/node": "^20.14.9",
+    "@types/bun": "^1.1.6",
+    "@types/node": "^20.14.10",
     "@types/stylus": "^0.48.42",
     "stylus": "^0.63.0"
   },