/usr/share/sushi/js/ is in gnome-sushi 3.11.90-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/sushi/js/ui/
/usr/share/sushi/js/ui/application.js
/usr/share/sushi/js/ui/fallbackRenderer.js
/usr/share/sushi/js/ui/main.js
/usr/share/sushi/js/ui/mainWindow.js
/usr/share/sushi/js/ui/mimeHandler.js
/usr/share/sushi/js/ui/spinnerBox.js
/usr/share/sushi/js/ui/tweener.js
/usr/share/sushi/js/ui/utils.js
/usr/share/sushi/js/util/
/usr/share/sushi/js/util/constants.js
/usr/share/sushi/js/util/format.js
/usr/share/sushi/js/util/path.js
/usr/share/sushi/js/util/totemMimeTypes.js
/usr/share/sushi/js/viewers/
/usr/share/sushi/js/viewers/audio.js
/usr/share/sushi/js/viewers/evince.js
/usr/share/sushi/js/viewers/font.js
/usr/share/sushi/js/viewers/gst.js
/usr/share/sushi/js/viewers/html.js
/usr/share/sushi/js/viewers/image.js
/usr/share/sushi/js/viewers/text.js