fixup! src: move package resolver to c++

Author: joyeecheung

src/node_modules.cc

@@ -105,6 +105,26 @@ const BindingData::PackageConfig* BindingData::GetPackageJSON(
 
   PackageConfig package_config{};
   package_config.file_path = path;
+
+#ifdef _AIX
+  // On AIX, the file read can still succeed even if it's a directory.
+  // For backporting https://github.com/nodejs/node/pull/50322 to v20.x,
+  // add the special case back and return early to notify the JS land
+  // and let it treat it as if the package.json does not exist.
+  // See https://github.com/libuv/libuv/pull/2025 and
+  // https://github.com/nodejs/node/pull/48477#issuecomment-1604586650
+  uv_fs_t req;
+  int rc = uv_fs_stat(nullptr, &req, path.data(), nullptr);
+  if (rc == 0) {
+    const uv_stat_t* const s = static_cast<const uv_stat_t*>(req.ptr);
+    bool is_dir = ((s->st_mode & S_IFMT) == S_IFDIR);
+    uv_fs_req_cleanup(&req);
+    if (is_dir) {
+      return nullptr;
+    }
+  }
+#endif
+
   // No need to exclude BOM since simdjson will skip it.
   if (ReadFileSync(&package_config.raw_json, path.data()) < 0) {
     return nullptr;