npm install @visulima/prisma-dmmf-transformer

npm install @prisma/client @prisma/generator-helper

import { transformDMMF, getJSONSchemaProperty } from "@visulima/prisma-dmmf-transformer";

const { transformDMMF } = require("@visulima/prisma-dmmf-transformer");

// prisma/schema.prisma
datasource db {
  provider = "postgresql"
  url      = env("DATABASE_URL")
}

generator client {
  provider = "prisma-client-js"
}

model User {
  id        Int      @id @default(autoincrement())
  email     String   @unique
  name      String?
  posts     Post[]
  createdAt DateTime @default(now())
}

model Post {
  id        Int      @id @default(autoincrement())
  title     String
  content   String?
  published Boolean  @default(false)
  author    User     @relation(fields: [authorId], references: [id])
  authorId  Int
}

npx prisma generate

import { PrismaClient } from "@prisma/client";
import { transformDMMF } from "@visulima/prisma-dmmf-transformer";

const prisma = new PrismaClient();

// Access internal DMMF
const dmmf = await (prisma as any)._getDmmf();

// Transform to JSON Schema
const schema = transformDMMF(dmmf);

console.log(Object.keys(schema.definitions));
// Output: ['User', 'Post']