Kysely Codegen

Installation

npm install kysely
npm install --save-dev kysely-codegen

# Then add one of the following drivers:
npm install --save-dev pg
npm install --save-dev better-sqlite3

Generating type definitions

The most convenient way to get started is to create an .env file with your database connection string:

# Postgres:
DATABASE_URL=postgres://username:[email protected]/database

# SQLite:
DATABASE_URL=C:/Program Files/sqlite3/db

And then run:

kysely-codegen

For more options, run kysely-codegen --help.

Using the type definitions

import { Kysely, PostgresDialect } from 'kysely';
import { DB } from 'kysely-codegen';

const db = new Kysely<DB>({
  dialect: new PostgresDialect({
    connectionString: process.env.DATABASE_URL,
  }),
});

await db.selectFrom('user').select('email').execute();