extend or merge with instanceof

[ricardo-valero]

Is it possible to extend or merge an existing instance?

I know you could use something like refine, mentioned in #796 (comment)

but would it be possible to reuse zod's primitives?

export const schema = z.object({
  avatar: z.instanceof(File).merge(z.object({
    size: z.number().min(5).max(30_000),
    type: z.enum(['image/jpeg', 'image/jpg', 'image/png', 'image/webp']),
  }))
})

[ricardo-valero]

Or maybe an intersection?

I guess this works

export const schema = z.object({
  avatar: z.intersection(
    z.instanceof(File),
    z.object({
      size: z.number().min(5).max(30_000),
      type: z.enum(['image/jpeg', 'image/jpg', 'image/png', 'image/webp']),
    }))
})

But any insight is appreciated