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SQLite is a lightweight, file-based database that's perfect for development, prototyping, and small applications. It requires no setup and stores data in a local file.

In this guide, you will learn how to set up a new TypeScript project from scratch, connect it to SQLite using Prisma ORM, and generate a Prisma Client for easy, type-safe access to your database.

Prerequisites

1. Create a new project

2. Install required dependencies

Install the packages needed for this quickstart:

npm
npm install prisma @types/node @types/better-sqlite3 -D
npm
npm install @prisma/client @prisma/adapter-better-sqlite3 dotenv

:::note[pnpm users with SQLite] If using pnpm 10+ with pnpx, you'll need the --allow-build=better-sqlite3 flag when running Prisma Studio due to SQLite's native dependency requirements. :::

Here's what each package does:

  • prisma - The Prisma CLI for running commands like prisma init, prisma migrate, and prisma generate
  • @prisma/client - The Prisma Client library for querying your database
  • @prisma/adapter-better-sqlite3 - The SQLite driver adapter that connects Prisma Client to your database
  • @types/better-sqlite3 - TypeScript type definitions for better-sqlite3
  • dotenv - Loads environment variables from your .env file

3. Configure ESM support

Update tsconfig.json for ESM compatibility:

json
{
  "compilerOptions": {
    "module": "ESNext",
    "moduleResolution": "node",
    "target": "ES2023",
    "strict": true,
    "esModuleInterop": true,
    "ignoreDeprecations": "6.0"
  }
}

Update package.json to enable ESM:

json
{
  "type": "module" // [!code ++]
}

4. Initialize Prisma ORM

You can now invoke the Prisma CLI by prefixing it with npx:

npm
npx prisma

Next, set up your Prisma ORM project by creating your Prisma Schema file with the following command:

npm
npx prisma init --datasource-provider sqlite --output ../generated/prisma

This command does a few things:

  • Creates a prisma/ directory with a schema.prisma file containing your database connection and schema models
  • Creates a .env file in the root directory for environment variables
  • Creates a prisma.config.ts file for Prisma configuration

The generated prisma.config.ts file looks like this:

typescript
import "dotenv/config";
import { defineConfig, env } from "prisma/config";

export default defineConfig({
  schema: "prisma/schema.prisma",
  migrations: {
    path: "prisma/migrations",
  },
  datasource: {
    url: env("DATABASE_URL"),
  },
});

The generated schema uses the ESM-first prisma-client generator with a custom output path:

prisma
generator client {
  provider = "prisma-client"
  output   = "../generated/prisma"
}

datasource db {
  provider = "sqlite"
}

A .env file should be created with the following value:

text
DATABASE_URL="file:./dev.db"

5. Define your data model

Open prisma/schema.prisma and add the following models:

prisma
generator client {
  provider = "prisma-client"
  output   = "../generated/prisma"
}

datasource db {
  provider = "sqlite"
}

model User { // [!code ++]
  id    Int     @id @default(autoincrement()) // [!code ++]
  email String  @unique // [!code ++]
  name  String? // [!code ++]
  posts Post[] // [!code ++]
} // [!code ++]

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

6. Create and apply your first migration

Create your first migration to set up the database tables:

npm
npx prisma migrate dev --name init

This command creates the database tables based on your schema.

Now run the following command to generate the Prisma Client:

npm
npx prisma generate

7. Instantiate Prisma Client

Now that you have all the dependencies installed, you can instantiate Prisma Client. You need to pass an instance of Prisma ORM's driver adapter to the PrismaClient constructor:

typescript
import "dotenv/config";
import { PrismaBetterSqlite3 } from "@prisma/adapter-better-sqlite3";
import { PrismaClient } from "../generated/prisma/client";

const connectionString = `${process.env.DATABASE_URL}`;

const adapter = new PrismaBetterSqlite3({ url: connectionString });
const prisma = new PrismaClient({ adapter });

export { prisma };

:::tip[Using SQLite with Bun] When targeting Bun, use the @prisma/adapter-libsql adapter instead of @prisma/adapter-better-sqlite3. Bun doesn’t support the native SQLite driver that better-sqlite3 relies on (see the node:sqlite reference). Instantiate Prisma Client like so:

ts
import "dotenv/config";
import { PrismaLibSql } from "@prisma/adapter-libsql";
import { PrismaClient } from "../generated/prisma/client";

const adapter = new PrismaLibSql({
  url: process.env.DATABASE_URL ?? "",
});

const prisma = new PrismaClient({ adapter });

export { prisma };

:::

8. Write your first query

Create a script.ts file to test your setup:

typescript
import { prisma } from "./lib/prisma";

async function main() {
  // Create a new user with a post
  const user = await prisma.user.create({
    data: {
      name: "Alice",
      email: "[email protected]",
      posts: {
        create: {
          title: "Hello World",
          content: "This is my first post!",
          published: true,
        },
      },
    },
    include: {
      posts: true,
    },
  });
  console.log("Created user:", user);

  // Fetch all users with their posts
  const allUsers = await prisma.user.findMany({
    include: {
      posts: true,
    },
  });
  console.log("All users:", JSON.stringify(allUsers, null, 2));
}

main()
  .then(async () => {
    await prisma.$disconnect();
  })
  .catch(async (e) => {
    console.error(e);
    await prisma.$disconnect();
    process.exit(1);
  });

Run the script:

npm
npx tsx script.ts

You should see the created user and all users printed to the console!

9. Explore your data with Prisma Studio

:::note[SQLite requirements for Prisma Studio]

  • File paths must have a file: protocol right now in the database url for SQLite
  • Node.js 22.5+: Works out of the box with the built-in node:sqlite module
    • May require NODE_OPTIONS=--experimental-sqlite environment variable
  • Node.js 20: Requires installing better-sqlite3 as a dependency
  • Deno >= 2.2: Supported via built-in SQLite module
  • Bun: Support for Prisma Studio with SQLite is coming soon and is not available yet

:::

:::tip[Using npx with better-sqlite3]

If you don't have node:sqlite available in your runtime or prefer not to install better-sqlite3 as a hard dependency (it adds ~10MB), you can use npx to temporarily install the required packages:

npm
npx -p better-sqlite3 -p prisma prisma studio --url file:./dev.db

This command:

  • Temporarily installs better-sqlite3 without adding it to your project dependencies
  • Runs Prisma Studio with the specified SQLite database file
  • Avoids the 10MB overhead of better-sqlite3 in your project

:::

Next steps

More info