From 58c3e6740989168cd2bf9847bda68a43aa1a6897 Mon Sep 17 00:00:00 2001
From: imxyy_soope_ <imxyy1soope1@gmail.com>
Date: Thu, 22 Jan 2026 16:46:11 +0800
Subject: [PATCH] fix: force the attrset before checking its type in
 Nix.hasAttr

---
 nix-js/runtime-ts/src/helpers.ts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/nix-js/runtime-ts/src/helpers.ts b/nix-js/runtime-ts/src/helpers.ts
index c48e31e..3c5689c 100644
--- a/nix-js/runtime-ts/src/helpers.ts
+++ b/nix-js/runtime-ts/src/helpers.ts
@@ -265,10 +265,11 @@ function selectWithDefault_impl(obj: NixValue, attrpath: NixValue[], default_val
 }
 
 export const hasAttr = (obj: NixValue, attrpath: NixValue[]): NixBool => {
-  if (!isAttrs(obj)) {
+  const forced = force(obj);
+  if (!isAttrs(forced)) {
     return false;
   }
-  let attrs = obj;
+  let attrs = forced;
 
   for (const attr of attrpath.slice(0, -1)) {
     const cur = force(attrs[forceString(attr)]);