1 files changed, 3 insertions, 2 deletions
diff --git a/sphinx/util/jsdump.py b/sphinx/util/jsdump.py
index 6776691cf..2226475f6 100644
--- a/sphinx/util/jsdump.py
+++ b/sphinx/util/jsdump.py
@@ -9,15 +9,16 @@
     :copyright: Copyright 2007-2018 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
+from __future__ import absolute_import
 
 import re
+from typing import TYPE_CHECKING
 
 from six import iteritems, integer_types, string_types
 
 from sphinx.util.pycompat import u
 
-if False:
-    # For type annotation
+if TYPE_CHECKING:
     from typing import Any, Dict, IO, List, Match, Union  # NOQA
 
 _str_re = re.compile(r'"(\\\\|\\"|[^"])*"')