GraphQL Modules tutorial: How to modularize GraphQL schema

GraphQL Modules is a framework designed to enhance the maintainability, scalability, and testability of GraphQL applications by dividing them into smaller, reusable, and feature-based modules. By implementing the separation of concerns design pattern, developers can organize their code into modules that independently handle specific features, making it easier to manage complex applications as they grow. Each module comprises schema definitions and resolver functions, and they can be merged to form a complete application schema. GraphQL Modules also supports dependency injection, allowing for the separation of business logic from resolvers and the use of service classes, enhancing the modularity and reusability of code. Additionally, the framework facilitates context sharing across all resolvers and supports various scopes for dependency lifecycle management. These capabilities make GraphQL Modules an attractive choice for developers seeking to create scalable and maintainable GraphQL applications.