How to Make a Radio Gradient Masking API

I learned a time the the radio gradient. I got to play with that a bunch which I haven't used you know CSS is really tricky because when you make a radio gradient you can do like radio great. It's basically a multiple arity function all CSS functions Oh at least like most of them are multiple arity and I never like I've just come to not like multiple arity API function signatures. These days Especially with TypeScript maybe TypeScript has been part of the reason I've changed it.