Use constants for TYPE_CHECKING

Author: bombsimon

ariadne_codegen/contrib/no_global_imports.py

@@ -15,6 +15,9 @@
 
 from ariadne_codegen import Plugin
 
+TYPE_CHECKING_MODULE: str = "typing"
+TYPE_CHECKING_FLAG: str = "TYPE_CHECKING"
+
 
 class NoGlobalImportsPlugin(Plugin):
     """Only import types when you call an endpoint needing it"""
@@ -313,7 +316,7 @@ def _update_imports(self, module: ast.Module) -> ast.Name | None:
             type_checking_imports[module_name].names.append(ast.alias(cls))
 
         import_if_type_checking = ast.If(
-            test=ast.Name(id="TYPE_CHECKING"),
+            test=ast.Name(id=TYPE_CHECKING_FLAG),
             body=list(type_checking_imports.values()),
             orelse=[],
         )
@@ -324,8 +327,8 @@ def _update_imports(self, module: ast.Module) -> ast.Name | None:
         module.body.insert(
             len(non_empty_imports),
             ast.ImportFrom(
-                module="typing",
-                names=[ast.Name("TYPE_CHECKING")],
+                module=TYPE_CHECKING_MODULE,
+                names=[ast.Name(TYPE_CHECKING_FLAG)],
             ),
         )