Request for code that validates URL and email inputs for @sanity-typed/zod package.

Can anyone point me to the exact code that validates things things like

"type": "url" | "email"

or for validations like

Rule.email()

(namely, the regex that's used)? I'm working on https://www.npmjs.com/package/@sanity-typed/zod and it would be cool to have it perform the exact same validations.

This is the good stuff. Thank you!