NestJS is a powerful backend framework for Node.js. Combined with TypeORM, database operations become extremely clean and type-safe.
Installation
npm install @nestjs/typeorm typeorm pg
Defining Entities
In TypeORM, an entity represents a table in the database. Thanks to decorators, schema definition is done directly on TypeScript classes.
Repository Pattern
In NestJS, you use TypeORM repositories by injecting them. This isolates the service layer from database details and makes testing easier.
Conclusion
The NestJS + TypeORM combination provides a solid foundation for large-scale backend applications.