single-source-of-truth
Use Zod schemas to generate your Prisma schema
pnpm add truth@npm:single-source-of-truth zod
```sh
pnpm add truth@npm:single-source-of-truth zod
```
```ts
// src/shapes.ts
import * as t from "truth/zod/v4";
import * as z from "zod/v4";
export const User = t.model({
id: z.string()[t.id]()[t.unique](),
get posts() {
return t.relation(() => Post).array();
},
});
export type User = z.infer;
// ^? { id: string }
export const Post = t.model({
id: z.string()[t.id]()[t.unique](),
authorId: z.string(),
get author() {
return t.relation(() => User).reference("authorId", "id");
},
title: z.string(),
});
export type Post = z.infer;
// ^? { id: string, authorId: string, title: string }
const UserWithPosts = User.with("posts");
type UserWithPosts = z.infer;
// ^? { id: string, posts: Post[] }
```
```ts
// truth.config.ts
import { defineConfig } from "truth/config";
export default defineConfig(({ registry, "zod/v4": zod, prisma }) => {
await zod.import(registry, "./src/shapes.ts");
await prisma.build(registry, "./prisma/schema.prisma");
});
```
```sh
truth
```
```prisma
model User {
id String @id @unique
posts Post[]
}
model Post {
id String @id @unique
authorId String
author User @relation(fields: [authorId], references: [id])
title String
}
```
