1 files changed, 5 insertions, 4 deletions
diff --git a/sqlglot/diff.py b/sqlglot/diff.py
index a5373b0..7d5ec21 100644
--- a/sqlglot/diff.py
+++ b/sqlglot/diff.py
@@ -14,10 +14,6 @@ from sqlglot import Dialect
 from sqlglot import expressions as exp
 from sqlglot.helper import ensure_collection
 
-if t.TYPE_CHECKING:
-    T = t.TypeVar("T")
-    Edit = t.Union[Insert, Remove, Move, Update, Keep]
-
 
 @dataclass(frozen=True)
 class Insert:
@@ -56,6 +52,11 @@ class Keep:
     target: exp.Expression
 
 
+if t.TYPE_CHECKING:
+    T = t.TypeVar("T")
+    Edit = t.Union[Insert, Remove, Move, Update, Keep]
+
+
 def diff(source: exp.Expression, target: exp.Expression) -> t.List[Edit]:
     """
     Returns the list of changes between the source and the target expressions.