TypeGraphQL

Modern framework for GraphQL API in Node.js. Use only classes and decorators to define your GraphQL schema. No need to define types in SDL and no need to create interfaces for them! This way you will have only one source of truth, so say goodbye to all field type mismatches, typos, and annoying refactoring. Define your whole schema, including types, interfaces, enums, unions, and subscriptions. Create the schema, types, and resolvers only with TypeScript, using classes and decorators! Use features like automatic validation, authorization guards, dependency injection, and plenty more. Implement queries and mutations as normal class methods! Dependency injection support and decorators abstraction provide great separation of business logic from the underlying transport layer. That gives you really easy testability, so you can just provide mocks of dependencies to prevent side effects and unit test your resolvers like simple services whose methods only take some parameters.