checking email and username availability

[lusty blaze]

in my prisma schema i've marked username and email field unique, however using zod validation doesnt help in validating whether the username is already taken and when a post req is made to the api call the database just throws an error. thus how do i check whether the username is already taken or available for use
P.S. im using zod and react-hook-forms in my stack

[quasi vector]

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[lusty blaze]

will using auth libraries like nextauth.js and stuff help resolve this issue with ease