/usr/share/javascript/ is in libjs-mootools 1.4.2~debian1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/javascript/mootools/
/usr/share/javascript/mootools/mootools-core-jm.js
/usr/share/javascript/mootools/mootools-core-nc.js
/usr/share/javascript/mootools/mootools-core-server-jm.js
/usr/share/javascript/mootools/mootools-core-server-nc.js
/usr/share/javascript/mootools/mootools-core-server-yc.js
/usr/share/javascript/mootools/mootools-core-server.min.js
/usr/share/javascript/mootools/mootools-core-yc.js
/usr/share/javascript/mootools/mootools-core.min.js
/usr/share/javascript/mootools/mootools-more-jm.js
/usr/share/javascript/mootools/mootools-more-nc.js
/usr/share/javascript/mootools/mootools-more-yc.js
/usr/share/javascript/mootools/mootools-more.js
/usr/share/javascript/mootools/mootools-more.min.js
/usr/share/javascript/mootools/mootools-server.js
/usr/share/javascript/mootools/mootools.js