IsZodSchema

Since 1.2.0

Check if a type is a Zod schema.

Signature

type IsZodSchema<T> = T extends { _def: object } ? true : false

Parameters

Parameter	Description
T	The type to check

Description

Determines if a given type is a Zod schema by checking for the presence of the _def property that all Zod schemas have.

Examples

Basic Usage

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

const StringSchema = z.string()

type Check = IsZodSchema<typeof StringSchema>  // true
type CheckPlain = IsZodSchema<string>  // false

With Conditional Types

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

type GetSchemaType<T> = IsZodSchema<T> extends true
  ? T['_output']
  : T

const UserSchema = z.object({ name: z.string() })

type Result = GetSchemaType<typeof UserSchema>
// { name: string }

Related

• ZodOutput - Extract output type
• ZodInput - Extract input type