How to use GraphQL Code Generator with Apollo

GraphQL Code Generator is a powerful tool that enhances the development of GraphQL applications by automating the generation of type-safe queries, mutations, and subscriptions, particularly when using React, Apollo Client, and TypeScript. By setting up the GraphQL Code Generator in three steps—installing necessary npm packages, creating a configuration file, and adding a script to package.json—developers can ensure accurate typings and autocompletion, significantly improving development workflow and reducing errors. The blog post demonstrates how to integrate these tools in a Todo App with Hasura as the backend, utilizing the GraphQL Code Generator to automatically produce types in response to changes in the GraphQL API or files. This setup enhances type safety from the database through to the frontend, catching potential errors early in the development process, as seen in examples where TypeScript flags nonexistent properties or incorrect operations on fields. The blog also provides an overview of how to perform GraphQL queries and mutations using Apollo Client, showcasing how this integration leads to more robust applications with fewer bugs, and concludes with a GitHub repository link containing the example code.