April 11, 2026
1 min read
How to build a type-safe, modular backend using NestJS and TypeORM? A practical guide from setup to entity design.
NestJS is a powerful backend framework for Node.js. Combined with TypeORM, database operations become extremely clean and type-safe.
npm install @nestjs/typeorm typeorm pg
In TypeORM, an entity represents a table in the database. Thanks to decorators, schema definition is done directly on TypeScript classes.
In NestJS, you use TypeORM repositories by injecting them. This isolates the service layer from database details and makes testing easier.
The NestJS + TypeORM combination provides a solid foundation for large-scale backend applications.