Migration

Coming from Zod

Map jobs, not methods. Do not reproduce z.object in another spelling.

Zod

import { z } from 'zod'

const User = z.object({
  name: z.string().min(1),
  email: z.string().email().optional(),
})

litetype

import { string } from 'litetype'

const User = {
  name: string.min(1),
  'email?': string.email(),
}

Job	Zod	litetype
Object	`z.object({…})`	`{…}`
Optional key	`.optional()`	`'key?'`
Undefined value	`.optional()`	`.undefinable()`
Extend / pick / omit	Library methods	Spread / property / rest
Infer	`z.infer`	`Infer`
Validate	Schema methods	`parse`, `safeParse`, `check`
Reject extras	`.strict()`	`strict(shape)`
Drop extras	Default	`strip(shape)`
Coerce	`z.coerce.number()`	`coerce.number()`
Cross-field check	`.refine()`	`refine(shape, pred, message)`

Wrap only at the boundary

TypeScript

import { standard, string } from 'litetype'

export const User = { name: string.min(1), 'email?': string.email() }
export const UserInput = standard(User)

t.procedure.input(UserInput)

Do not port every feature. Use transforms for trim and brand, inspect issue.code instead of installing an error-map language, and skip Map, Set and Promise schemas unless your boundary genuinely receives them.