Fedaco ORM

Laravel Eloquent-style ORM for TypeScript. Decorator-based models, fluent query builder, eager-loaded relationships, transactions, schema builder.

📚 Full documentation · 🧪 Examples

Install

Install fedaco core plus one driver package per database you want to talk to:

# SQLite (good default for local dev / tests)
npm install @gradii/fedaco @gradii/fedaco-sqlite-driver

Database	Driver package
SQLite	@gradii/fedaco-sqlite-driver
MySQL / MariaDB	@gradii/fedaco-mysql-driver
PostgreSQL	@gradii/fedaco-postgres-driver
SQL Server	@gradii/fedaco-sqlserver-driver

Enable experimentalDecorators and emitDecoratorMetadata in tsconfig.json.

Quick Start

1. Set up a connection

import { DatabaseConfig } from '@gradii/fedaco';
import { sqliteDriver } from '@gradii/fedaco-sqlite-driver';

const db = new DatabaseConfig();

db.addConnection({
  driver: 'sqlite',
  factory: sqliteDriver(),
  database: ':memory:',
});

db.bootFedaco();
db.setAsGlobal();

The factory field is required — fedaco no longer ships drivers in core, so the driver package supplies its own factory.

2. Create a table

import { schema } from '@gradii/fedaco';

await schema().create('users', (table) => {
  table.increments('id');
  table.string('email').withUnique();
  table.string('name').nullable();
  table.integer('age').nullable();
  table.timestamps();
});

3. Define a model

import {
  Column,
  CreatedAtColumn,
  Model,
  PrimaryGeneratedColumn,
  Table,
  UpdatedAtColumn,
} from '@gradii/fedaco';

@Table({ tableName: 'users' })
export class User extends Model {
  _fillable = ['email', 'name', 'age'];

  @PrimaryGeneratedColumn()
  declare id: number;

  @Column()
  declare email: string;

  @Column()
  declare name: string;

  @Column()
  declare age: number;

  @CreatedAtColumn()
  declare created_at: Date;

  @UpdatedAtColumn()
  declare updated_at: Date;
}

4. CRUD

// create
const user = await User.createQuery().create({
  email: 'ada@example.com',
  name: 'Ada Lovelace',
  age: 36,
});

// read
const list = await User.createQuery().where('age', '>', 18).get();
const ada = await User.createQuery().where('email', 'ada@example.com').first();

// update
await ada.Update({ age: 37 });

// delete
await ada.Delete();

5. Transactions

import { db } from '@gradii/fedaco';

await db().transaction(async (tx) => {
  const user = await User.createQuery(tx).create({
    email: 'bob@example.com',
    name: 'Bob',
    age: 25,
  });
  // every model query inside this callback uses `tx`
});

For long-running or concurrent transactions, opt into isolated: true with a connection pool — see the Connection Pooling guide.

Features

• Decorator-based model definition (@Table, @Column, @PrimaryGeneratedColumn, @CreatedAtColumn, …)
• Fluent query builder compiled to SQL
• All eager-load patterns: HasOne, HasMany, BelongsTo, BelongsToMany, HasOneThrough, HasManyThrough, HasOneOfMany, polymorphic
• Per-relation onQuery hook for baked-in constraints, custom pivots, "one of many" disambiguation
• Soft deletes, mass-assignment guards, accessors, casts
• Multi-connection, read/write split, connection pooling, isolated transactions
• Schema builder with migration CLI
• Drivers: SQLite (sqlite3 / better-sqlite3), MySQL, MariaDB, PostgreSQL, SQL Server
• NestJS module: @gradii/nest-fedaco

TypeScript Note

When target is es2022 or higher, TypeScript emits modern class-field semantics — every declared field is initialised to undefined in the constructor, which clobbers values fedaco populates via decorators.

Workaround — mark every column declaration with declare so TypeScript skips the runtime field initialisation:

@Table({ tableName: 'users' })
class User extends Model {
  @PrimaryGeneratedColumn()
  declare id: number;   // <-- `declare`, not a plain field

  @Column()
  declare email: string;
}

Documentation

• Getting Started
• Multiple Connections
• Connection Pooling & Isolated Transactions
• Writing a Custom Driver
• Nest Integration
• Migration Guide
• Transactions
• Defining Relationships
• Predefined onQuery Hook
• Model Functions Reference

License

MIT