/usr/share/darktable/js/scriptaculous.js is in darktable 2.4.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/darktable/js/../../javascript/scriptaculous/scriptaculous.js
/usr/share/darktable/js/../../javascript/scriptaculous/scriptaculous.js