GraphQL Mutation with Apollo Client in React

The previous lessons have taught you how to query data with React Apollo and the Apollo Client. In this lesson, you will learn about mutations. As in other applications before, we have implemented starring a repository with GitHub’s exposed addStar mutation.

The mutation starts out with a variable to identify the repository to be starred. We haven’t used a variable in Query component yet, but the following mutation works the same way, which can be defined in the src/Repository/RepositoryItem/index.js file.