Alepha Postgres

A type-safe SQL query builder and ORM using Drizzle.

Installation

This package is part of the Alepha framework and can be installed via the all-in-one package:

npm install alepha

Alternatively, you can install it individually:

npm install @alepha/core @alepha/postgres

Module

Postgres client based on Drizzle ORM, Alepha type-safe friendly.

const users = $entity({
  name: "users",
  schema: t.object({
    id: pg.primaryKey(),
    name: t.string(),
    email: t.string(),
  }),
});

class Db {
  users = $repository(users);
}

const db = alepha.inject(Db);
const user = await db.users.one({ name: { eq: "John Doe" } });

This is not a full ORM, but rather a set of tools to work with Postgres databases in a type-safe way.

It provides:

• A type-safe way to define entities and repositories. (via $entity and $repository)
• Custom query builders and filters.
• Built-in special columns like createdAt, updatedAt, deletedAt, version.
• Automatic JSONB support.
• Automatic synchronization of entities with the database schema (for testing and development).
• Fallback to raw SQL via Drizzle ORM sql function.

Migrations are supported via Drizzle ORM, you need to use the drizzle-kit CLI tool to generate and run migrations.

Relations are NOT SUPPORTED yet. If you need relations, please use the drizzle-orm package directly.

API Reference

Descriptors

$entity()

Declare a new entity in the database. This descriptor alone does not create the table, it only describes it. It must be used with $repository to create the table and perform operations on it.

This is a convenience function to create a table with a json schema. For now, it creates a drizzle-orm table under the hood.

import { $entity } from "@alepha/postgres";

const User = $entity({
  name: "user",
  schema: t.object({
    id: pg.primaryKey(t.uuid()),
    name: t.string(),
    email: t.string(),
  }),
  indexes: ["email"],
});

$repository()

$sequence()

$transaction()