We have some custom survey themes for LimeSurvey. After a recent upgrade we noticed that in 6.6.0+240729, the deprecated options.js file was removed (or at least its contents were), and our custom theme settings page was broken.
What's the preferred way in newer LS versions? Should we just copy the code we used from the old options.js into our custom theme? Or can similar functionality be included from a different place? A pointer to any documentation about this change (if there is any) would already be helpful.