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Next, let’s set up the database for our newly created Nest application. I’ll be using PostgreSQL, but you can use any of the databases Knex supports. To interact with our database, we’ll be using Objection.js, which is an ORM for Node.js built on top Knex. For this tutorial, we’ll be using Nest Objection, a Nest module for Objection.
You can get the complete source code for our demo from this GitHub repository.
That’s how to use the repository. If down the line in the course of the project we decide to switch data access layer to something like Prisma, we’ll just need to create a PrismaPostRepository class that implements the PostRepositoryInterface:
Next, let’s set up the database for our newly created Nest application. I’ll be using PostgreSQL, but you can use any of the databases Knex supports. To interact with our database, we’ll be using Objection.js, which is an ORM for Node.js built on top Knex. For this tutorial, we’ll be using Nest Objection, a Nest module for Objection.
Like most design patterns, the repository pattern is language agnostic. With that in mind, I’ll be showing how to implement the repository with TypeScript and Node.js. For the purpose of demonstration, I’ll be using Nest, a Node.js framework.