We all know that GraphQL is so great and solves many problems that we have with REST API, like overfetching and underfetching. But developing a GraphQL API in Node.js with TypeScript is sometimes a bit of pain.

The biggest problem is the types definition redundancy in our codebase, which makes it difficult to keep things in sync. To add a new field to our entity, we have to jump through all the files - modify an entity class, the schema, and regenerate the schema types. It's easy to forget to update one piece or make a mistake with a single type.

TypeGraphQL comes to address this issues, based on experience from a few years of developing GraphQL APIs in TypeScript. The main idea is to have only one source of truth by defining the schema using classes and a bit of decorators help. Additional features like dependency injection, validation or auth guards helps with common tasks that normally we would have to handle by ourselves.

Overview

🍷 GraphQL

Define your whole schema, including types, interfaces, enums, unions and subscriptions

💙 TypeScript

Create the schema, types and resolvers only with TypeScript, using classes and decorators!

🔨 Advanced features

Use features like automatic validation, authorization guards, middlewares, dependency injection and plenty more…