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kysely-postgres-js offers a Kysely dialect for PostgreSQL that supports the Postgres.js client library (version >= 3.4) and Bun's (version >= 1.2) SQL native binding.

This dialect should not be confused with Kysely's core PostgreSQL dialect, which supports the significantly more adopted pg client library and Neon's WebSockets Pool instead. Both of these dialects are maintained by members of the Kysely core team and are production ready.

Installation

Node.js

npm install kysely-postgres-js postgres kysely

pnpm add kysely-postgres-js postgres kysely

yarn add kysely-postgres-js postgres kysely

Other runtimes

deno add npm:kysely-postgres-js npm:postgres npm:kysely

bun add kysely-postgres-js kysely

Usage

Node.js

import { type GeneratedAlways, Kysely } from 'kysely'
import { PostgresJSDialect } from 'kysely-postgres-js'
import postgres from 'postgres'

interface Database {
  person: {
    id: GeneratedAlways<number>
    first_name: string | null
    last_name: string | null
    age: number
  }
}

const db = new Kysely<Database>({
  dialect: new PostgresJSDialect({
    postgres: postgres({
      database: 'test',
      host: 'localhost',
      max: 10,
      port: 5434,
      user: 'admin',
    }),
  }),
})

const people = await db.selectFrom("person").selectAll().execute();

Bun

import { SQL } from 'bun'
import { type GeneratedAlways, Kysely } from 'kysely'
import { PostgresJSDialect } from 'kysely-postgres-js'

interface Database {
  person: {
    id: GeneratedAlways<number>
    first_name: string | null
    last_name: string | null
    age: number
  }
}

const db = new Kysely<Database>({
  dialect: new PostgresJSDialect({
    postgres: new SQL({
      database: 'test',
      host: 'localhost',
      max: 10,
      port: 5434,
      user: 'admin',
    }),
  }),
})

const people = await db.selectFrom("person").selectAll().execute();