Correctly set ASTTransformer's issues even when an empty list is passed to it

Author: alessiostalla

CHANGELOG.md

@@ -10,6 +10,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### Fixed
 - `Position`'s printed representation
+- Empty issues list in `ASTTransformer`
 
 ## [0.9.0] – 2025-07-23
 

pylasu/transformation/transformation.py

@@ -94,7 +94,7 @@ class ASTTransformer:
     known_classes: Dict[str, Set[type]]
 
     def __init__(self, issues: List[Issue] = None, allow_generic_node: bool = True):
-        self.issues = issues or []
+        self.issues = issues if issues is not None else []
         self.allow_generic_node = allow_generic_node
         self.factories = dict()
         self.known_classes = dict()