diff --git a/extensions/json/package.json b/extensions/json/package.json
index 901584e1d90..af713956bfd 100644
--- a/extensions/json/package.json
+++ b/extensions/json/package.json
@@ -26,6 +26,7 @@
           ".webmanifest",
           ".js.map",
           ".css.map",
+          ".ts.map",
           ".har",
           ".jslintrc",
           ".jsonld"