How to represent a partial record in zod?

Question

I need to represent a Partial<Record<SomeEnum, boolean>> with zod.

In TypeScript, we can do this easily:

type SomeEnum = 'one' | 'two'
type MyRecord = Record<SomeNum, boolean>
type MyRecordPartial = Partial<MyRecord>

With zod, we can represent the enum and record, but not the partial record?

const SomeEnum = z.enum(['one', 'two'])
const MyRecord = z.record(SomeEnum, z.boolean());
const MyRecordPartial = MyRecord.partial() // This is not a method for Records.

What's the idoimatic way of doing this?

Answer 1

zod records are partial by default:

import { z } from 'zod'

const SomeEnum = z.enum(['one', 'two'])

const MyRecord = z.record(SomeEnum, z.boolean());

type MyRecordType = z.infer<typeof MyRecord>
// {
//    one?: boolean | undefined;
//    two?: boolean | undefined;
// }

const testA: MyRecordType = { one: true } // fine

See playground

You actually have to do extra work to make all the keys required. See a related question I asked a while back about how to do that.