From a642e929ff9ca414a3ad365e218cb7a8a7eb7a51 Mon Sep 17 00:00:00 2001
From: fraxken <gentilhomme.thomas@gmail.com>
Date: Fri, 16 Aug 2024 19:26:15 +0200
Subject: [PATCH] fix(Deobfuscator): return if Node is null in
 extractCounterIdentifiers

---
 src/Deobfuscator.js                              |  3 +++
 ...fuscator-function-declaration-id-null.spec.js | 16 ++++++++++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 test/issues/295-deobfuscator-function-declaration-id-null.spec.js

diff --git a/src/Deobfuscator.js b/src/Deobfuscator.js
index 580d75c..f1ad6cf 100644
--- a/src/Deobfuscator.js
+++ b/src/Deobfuscator.js
@@ -63,6 +63,9 @@ export class Deobfuscator {
    * @param {*} node
    */
   #extractCounterIdentifiers(nc, node) {
+    if (node === null) {
+      return;
+    }
     const { type } = nc;
 
     switch (type) {
diff --git a/test/issues/295-deobfuscator-function-declaration-id-null.spec.js b/test/issues/295-deobfuscator-function-declaration-id-null.spec.js
new file mode 100644
index 0000000..52ab4f1
--- /dev/null
+++ b/test/issues/295-deobfuscator-function-declaration-id-null.spec.js
@@ -0,0 +1,16 @@
+// Import Node.js Dependencies
+import { test } from "node:test";
+
+// Import Internal Dependencies
+import { AstAnalyser } from "../../index.js";
+
+/**
+ * @see https://github.com/NodeSecure/js-x-ray/issues/295
+ */
+test("Deobfuscator.#extractCounterIdentifiers should not throw if FunctionDeclaration id is null", () => {
+  new AstAnalyser().analyse(`
+    export default async function (app) {
+      app.loaded = true
+    }
+  `);
+});