Seeding Database Data

// prisma/seed.ts
import { PrismaClient } from "@prisma/client";
const prisma = new PrismaClient();

async function main() {
  await prisma.user.upsert({
    where: { email: "admin@example.com" },
    update: {},
    create: { email: "admin@example.com", role: "ADMIN" }
  });
}
main().finally(() => prisma.$disconnect());

{
  "prisma": { "seed": "tsx prisma/seed.ts" }
}

import { faker } from "@faker-js/faker";
const users = Array.from({ length: 50 }, () => ({
  email: faker.internet.email(),
  name:  faker.person.fullName()
}));
await prisma.user.createMany({ data: users });

await prisma.user.create({
  data: {
    email: "demo@x.io",
    posts: { create: [{ title: "Welcome" }, { title: "Hello" }] }
  }
});

import { parse } from "csv-parse/sync";
import { readFileSync } from "node:fs";
const rows = parse(readFileSync("data/users.csv"), { columns: true });
await prisma.user.createMany({ data: rows, skipDuplicates: true });

const userFactory = (overrides = {}) => ({
  email: faker.internet.email(),
  role: "USER",
  ...overrides
});