@seedts/adapter-prisma

Prisma adapter for SeedTS - enables database seeding with Prisma ORM.

Installation

npm install @seedts/adapter-prisma @prisma/client
# or
pnpm add @seedts/adapter-prisma @prisma/client
# or
yarn add @seedts/adapter-prisma @prisma/client

Usage

import { PrismaClient } from '@prisma/client';
import { PrismaAdapter } from '@seedts/adapter-prisma';
import { Seed, Action, Entity, Attribute } from '@seedts/jsx-runtime';

// Create Prisma client
const prisma = new PrismaClient();

// Create adapter
const adapter = new PrismaAdapter({
  client: prisma,
  modelName: 'user', // lowercase model name from your Prisma schema
});

// Use with SeedTS
export const UsersSeed = () => (
  <Seed name="users" adapter={adapter}>
    <Action count={10}>
      <Entity>
        <Attribute
          name="email"
          type="string"
          factory={(ctx) => `user${ctx.index}@example.com`}
        />
        <Attribute name="name" type="string" factory={() => 'John Doe'} />
      </Entity>
    </Action>
  </Seed>
);

Configuration

PrismaAdapterConfig

| Option | Type | Required | Default | Description | |--------|------|----------|---------|-------------| | client | PrismaClient | Yes | - | Prisma client instance | | modelName | string | Yes | - | Model name (lowercase, e.g., 'user', 'post') | | modelDelegate | any | No | - | Custom model delegate (auto-inferred if not provided) |

Features

• ✅ Transaction support (native Prisma transactions)
• ✅ Type-safe with Prisma generated types
• ✅ Automatic relation handling
• ✅ Works with all Prisma-supported databases
• ✅ Auto-increment ID handling

Prisma Schema Example

// schema.prisma
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?
  author    User     @relation(fields: [authorId], references: [id])
  authorId  Int
  createdAt DateTime @default(now())
}

Multiple Models

const userAdapter = new PrismaAdapter({
  client: prisma,
  modelName: 'user',
});

const postAdapter = new PrismaAdapter({
  client: prisma,
  modelName: 'post',
});

Advanced: Using Prisma Transactions

The Prisma adapter includes a special transaction() method for advanced use cases:

const result = await adapter.transaction(async (txAdapter) => {
  // Use txAdapter inside the transaction
  const users = await txAdapter.insert('users', userData);
  return users;
});

TypeScript Types

import { PrismaClient, User } from '@prisma/client';
import { PrismaAdapter } from '@seedts/adapter-prisma';

const adapter = new PrismaAdapter<User>({
  client: prisma,
  modelName: 'user',
});

Cleanup

// Close Prisma connection
await adapter.close();

License

MIT