I really didn’t want to build this, but I just couldn’t find a dropdown that handled everything I needed. It started as a project requirement and slowly grew into something that now covers single and multi selection, creating new options if needed (but only if you want), virtualization (no opt out) for big lists, full keyboard support, search with highlighting, and easy styling with plain CSS (no frameworks), no themes to fight against.
I think this gets close to what most people actually need from a dropdown without making you glue together a bunch of separate pieces. Hopefully it saves someone else the time I spent chasing edge cases. Feedback is very much welcome.