import { z } from 'zod';

const v1 = z.object({
    /** this works */
    userId: z.string(),
});

const v2 = z.object({
    /** this doesn't */
    itemId: z.string(),
}).extend(v1.shape);

const instance1: z.infer<typeof v1> = {
    userId: '2' // has hint on hover
}

const instance2: z.infer<typeof v2> = {
    itemId: '1',
    userId: '2'
}