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https://github.com/DallasHoff/sqlocal

SQLocal makes it easy to run SQLite3 in the browser, backed by the origin private file system.
https://github.com/DallasHoff/sqlocal

local-first opfs sqlite sqlite-wasm typescript-library

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SQLocal makes it easy to run SQLite3 in the browser, backed by the origin private file system.

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# SQLocal



SQLocal makes it easy to run SQLite3 in the browser, backed by the origin private file system. It wraps the [WebAssembly build of SQLite3](https://sqlite.org/wasm/doc/trunk/index.md) and gives you a simple interface to interact with databases running on device.



[Documentation](https://sqlocal.dallashoffman.com) - [GitHub](https://github.com/DallasHoff/sqlocal) - [NPM](https://www.npmjs.com/package/sqlocal) - [Fund](https://www.paypal.com/biz/fund?id=U3ZNM2Q26WJY8)



## Features



- 🔎 Locally executes any query that SQLite3 supports

- 🧵 Runs the SQLite engine in a web worker so queries do not block the main thread

- 📂 Persists data to the origin private file system, which is optimized for fast file I/O

- 🔒 Each user can have their own private database instance

- 🚀 Simple API; just name your database and start running SQL queries

- 🛠️ Works with Kysely and Drizzle ORM for making type-safe queries



## Examples



```javascript

import { SQLocal } from 'sqlocal';



// Create a client with a name for the SQLite file to save in

// the origin private file system

const { sql } = new SQLocal('database.sqlite3');



// Use the "sql" tagged template to execute a SQL statement

// against the SQLite database

await sql`CREATE TABLE groceries (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT)`;



// Execute a parameterized statement just by inserting 

// parameters in the SQL string

const items = ['bread', 'milk', 'rice'];

for (let item of items) {

  await sql`INSERT INTO groceries (name) VALUES (${item})`;

}



// SELECT queries and queries with the RETURNING clause will

// return the matched records as an array of objects

const data = await sql`SELECT * FROM groceries`;

console.log(data);

```



Log:



```javascript

[

  { id: 1, name: 'bread' },

  { id: 2, name: 'milk' },

  { id: 3, name: 'rice' }

]

```



Or, you can use SQLocal as a driver for [Kysely](https://kysely.dev/) or [Drizzle ORM](https://orm.drizzle.team/) to make fully-typed queries.



### Kysely



```typescript

import { SQLocalKysely } from 'sqlocal/kysely';

import { Kysely, Generated } from 'kysely';



// Initialize SQLocalKysely and pass the dialect to Kysely

const { dialect } = new SQLocalKysely('database.sqlite3');

const db = new Kysely({ dialect });



// Define your schema 

// (passed to the Kysely generic above)

type DB = {

  groceries: {

    id: Generated;

    name: string;

  };

};



// Make type-safe queries

const data = await db

  .selectFrom('groceries')

  .select('name')

  .orderBy('name', 'asc')

  .execute();

console.log(data);

```



See the Kysely documentation for [getting started](https://kysely.dev/docs/getting-started?dialect=sqlite).



### Drizzle



```typescript

import { SQLocalDrizzle } from 'sqlocal/drizzle';

import { drizzle } from 'drizzle-orm/sqlite-proxy';

import { sqliteTable, int, text } from 'drizzle-orm/sqlite-core';



// Initialize SQLocalDrizzle and pass the driver to Drizzle

const { driver } = new SQLocalDrizzle('database.sqlite3');

const db = drizzle(driver);



// Define your schema

const groceries = sqliteTable('groceries', {

  id: int('id').primaryKey({ autoIncrement: true }),

  name: text('name').notNull(),

});



// Make type-safe queries

const data = await db

  .select({ name: groceries.name })

  .from(groceries)

  .orderBy(groceries.name)

  .all();

console.log(data);

```



See the Drizzle ORM documentation for [declaring your schema](https://orm.drizzle.team/docs/sql-schema-declaration) and [making queries](https://orm.drizzle.team/docs/crud).



## Install



Install the SQLocal package in your application using your package manager.



```sh

npm install sqlocal

# or...

yarn add sqlocal

# or...

pnpm install sqlocal

```



### Cross-Origin Isolation



In order to persist data to the origin private file system, this package relies on APIs that require cross-origin isolation, so the page you use this package on must be served with the following HTTP headers. Otherwise, the browser will block access to the origin private file system.



```http

Cross-Origin-Embedder-Policy: require-corp

Cross-Origin-Opener-Policy: same-origin

```



If your development server uses Vite, you can do this by adding the following to your Vite configuration.



```javascript

plugins: [

  {

    name: 'configure-response-headers',

    configureServer: (server) => {

      server.middlewares.use((_req, res, next) => {

        res.setHeader('Cross-Origin-Embedder-Policy', 'require-corp');

        res.setHeader('Cross-Origin-Opener-Policy', 'same-origin');

        next();

      });

    },

  },

],

```



### Vite Configuration



Vite currently has an issue that prevents it from loading web worker files correctly with the default configuration. If you use Vite, please add the below to your Vite configuration to fix this.



```javascript

optimizeDeps: {

  exclude: ['sqlocal'],

},

```