/usr/share/javascript/dojox/sketch/ is in libjs-dojo-dojox 1.10.2+dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/javascript/dojox/sketch/Anchor.js
/usr/share/javascript/dojox/sketch/Annotation.js
/usr/share/javascript/dojox/sketch/DoubleArrowAnnotation.js
/usr/share/javascript/dojox/sketch/Figure.js
/usr/share/javascript/dojox/sketch/LeadAnnotation.js
/usr/share/javascript/dojox/sketch/PreexistingAnnotation.js
/usr/share/javascript/dojox/sketch/SingleArrowAnnotation.js
/usr/share/javascript/dojox/sketch/Slider.js
/usr/share/javascript/dojox/sketch/Toolbar.js
/usr/share/javascript/dojox/sketch/UnderlineAnnotation.js
/usr/share/javascript/dojox/sketch/UndoStack.js
/usr/share/javascript/dojox/sketch/_Plugin.js
/usr/share/javascript/dojox/sketch/resources/
/usr/share/javascript/dojox/sketch/resources/images/
/usr/share/javascript/dojox/sketch/resources/images/icons.gif
/usr/share/javascript/dojox/sketch/resources/sketch.css