Is there a built-in way to prevent ID duplicates using Zod?

Let's say that your data is an array of objects with "id" and "name" fields:

[
    {
        id: 1,
        name: "Joe"
    },
    {
        id: 1,
        name: "Schmoe"
    }
]

[
    {
        id: 1,
        name: "Joe"
    },
    {
        id: 1,
        name: "Schmoe"
    }
]

as you can see, the id is duplicated but it should be unique. Does Zod have a built-in method to validate against this kind of issue? I wasn't able to find any. Or am I forced to use .refine and create a new Set with all the ids in my data?

3 Replies

upio•2mo ago

https://github.com/colinhacks/zod/discussions/2316

GitHub

Validate items uniqueness in z.array · colinhacks zod · Discussio...

I was checking the docs to see if there was any way to validate if there was any duplicate items on an array, perhaps we could implement a unique() function that does just that for arrays? const sc...

Muhct•2mo ago

yup I saw that discussion but no one mentions a built-in way to prevent duplicates, just workarounds that would be last resource for me

upio•2mo ago

there are no built in ways to do that

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Is there a built-in way to prevent ID duplicates using Zod?