TypeORM

NestJS + TypeORM patterns: integration glue (TypeOrmModule, @InjectRepository), error handling, and gotchas specific to running TypeORM under Nest’s DI container.

Available

• Handle database errors (unique, FK, check)

Pending

• TypeOrmModule.forRoot setup with config checks
• @InjectRepository and custom repositories
• Transactions: dataSource.transaction() vs @Transactional decorators
• Relations and eager/lazy loading
• Query builder patterns
• Migrations workflow