Nice start

It’s a nice start, but needs some work to be really useful. I would suggest adding an options page where people can define their own classes and patterns.

Furthermore I could not use the plugin in it’s currents state because I would like to see the expected pattern before and while I’m typing, like is shown here: https://robinherbots.github.io/Inputmask/

So some extra options would be nice:
– never show pattern
– always show pattern
– only show pattern while cursor is in field

That being said, I would love to help you out on the development of this plugin if you are interested.