diff --git a/extensions/javascript/package.json b/extensions/javascript/package.json
index b0c0aed37229d..b22f781c5f984 100644
--- a/extensions/javascript/package.json
+++ b/extensions/javascript/package.json
@@ -42,7 +42,8 @@
         "extensions": [
           ".js",
           ".es6",
-          ".mjs"
+          ".mjs",
+          ".pac"
         ],
         "filenames": [
           "jakefile"