ZodInput

Since 1.2.0

Extract the input type from a Zod schema.

Signature

type ZodInput<T> = T extends { _input: infer I } ? I : T extends { _def: { type: string } } ? T : never

Parameters

Parameter	Description
T	The Zod schema type

Description

Extracts the TypeScript type that represents the input of a Zod schema. This is useful for getting the type that will be accepted during parsing, which may differ from the output type due to transformations.

Examples

Basic Usage

import type { ZodInput } from 'uni-types'
import { z } from 'zod'

const DateSchema = z.string().transform(s => new Date(s))

type Input = ZodInput<typeof DateSchema>
// string (the input type before transformation)

With Object Schemas

import type { ZodInput } from 'uni-types'
import { z } from 'zod'

const UserSchema = z.object({
  name: z.string(),
  age: z.coerce.number()  // Accepts string input
})

type Input = ZodInput<typeof UserSchema>
// Type with age potentially accepting string input

Related

• ZodOutput - Extract output type
• ZodShape - Extract schema shape