From 0a9b8a27e6192e91ccee8629d62dabad7d4a6103 Mon Sep 17 00:00:00 2001
From: BryanFRD <bryanferrando59@gmail.com>
Date: Sun, 20 Sep 2026 17:24:16 +0200
Subject: [PATCH] fix(npm): use the dev-build fallback only from a source
 checkout

---
 npm/bin/ferrflow.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/npm/bin/ferrflow.js b/npm/bin/ferrflow.js
index feaecf0c..f47d268b 100644
--- a/npm/bin/ferrflow.js
+++ b/npm/bin/ferrflow.js
@@ -34,8 +34,10 @@ function getBinaryPath() {
 
   // Fallback: local dev build
   const ext = process.platform === "win32" ? ".exe" : "";
-  const devBuild = join(__dirname, "..", "..", "target", "release", `ferrflow${ext}`);
-  if (existsSync(devBuild)) return devBuild;
+  const repoRoot = join(__dirname, "..", "..");
+  const inSourceCheckout = existsSync(join(repoRoot, "Cargo.toml"));
+  const devBuild = join(repoRoot, "target", "release", `ferrflow${ext}`);
+  if (inSourceCheckout && existsSync(devBuild)) return devBuild;
 
   console.error(
     `Unsupported platform: ${process.platform}-${process.arch}\n` +