Broaden your interfaces by implementing multiple interfaces with Zod

Utilizing typescript, I am able to incorporate multiple interfaces

interface Name {
 name: string
}

interface Age {
 age: number
}

interface People extends Name, Age {
 height: number
}

Is there a similar way to achieve this with Zod?

What I attempted

const nameZ = z.object({ name: z.string() })
const ageZ = z.object({ age: z.number() })

const peopleZ = z.object({ hieght: z.number }).merge(nameZ).merge(ageZ)

However, the code appears messy and is difficult to comprehend. Are there any alternative solutions?

Thank you

Answer №1

If you're looking to streamline your code, there are a few options available. One approach is to utilize the .extend method as the final step in your chain of methods. This eliminates the need for typing out z.object() repeatedly. Another possibility is to rearrange the sequence of merges. In cases where you have numerous schemas to merge, creating a function might be beneficial, although this could result in losing some TypeScript type information unless you come up with a workaround.

import { z } from "zod";

const nameZ = z.object({ name: z.string() })
const ageZ = z.object({ age: z.number() })

const peopleZ  = z.object({ height: z.number() }).merge(nameZ).merge(ageZ)
const peopleZ2 = nameZ.merge(ageZ).extend({ height: z.number() })
const peopleZ3 = nameZ.merge(ageZ).merge(z.object({ height: z.number() }))

https://tsplay.dev/abc123

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