seedersDecorator-based entity seeding

Annotate entities with @Seed(), create or persist fully populated entity graphs — relations, embedded types, and circular guards included. Works with TypeORM and MikroORM.

TypeORM

MikroORM

GitHub

@Seed() decorator

Mark entity properties with factory functions. Relations, embedded types, and circular references are handled automatically.

Seeder suites

Organize seeding logic into @Seeder classes with declared dependencies. The library sorts and executes them in the correct order.

NestJS integration

SeederModule runs seeders on application bootstrap with run-once tracking. Watch-mode restarts don't re-seed.

CLI

Run seeder suites or seed individual entities from the terminal without writing a seed script. (TypeORM only)