Fixes #417 and saves users from accidentally deleting important files by throwing an error when the user provides a libdir that contains files. This is only an issue when selfcontained = TRUE because otherwise the files written into libdir are not removed after saving the widget html.
Fixes #417 and saves users from accidentally deleting important files by throwing an error when the user provides a
libdirthat contains files. This is only an issue whenselfcontained = TRUEbecause otherwise the files written intolibdirare not removed after saving the widget html.