fix: guard extract remap against paths outside root

Author: adityachaudhary99

graphify/extract.py

@@ -9088,7 +9088,11 @@ def extract(
     id_remap: dict[str, str] = {}
     for path in paths:
         canonical = _file_node_id(path)
-        old_ids = {_make_id(str(path)), _make_id(str(path.relative_to(root)))}
+        try:
+            rel = path.relative_to(root)
+        except ValueError:
+            continue
+        old_ids = {_make_id(str(path)), _make_id(str(rel))}
         for old_id in old_ids:
             if old_id != canonical:
                 id_remap[old_id] = canonical

tests/test_import_extension_resolution.py

@@ -11,8 +11,9 @@
 from pathlib import Path
 
 from graphify.extract import (
-    extract_js, extract_python,
-    _make_id, _file_node_id, _import_targets,
+    extract_js, extract_python, extract_svelte,
+    _make_id, _file_node_id,
+    _resolve_js_module_path,
 )