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React 18 Design Patterns and Best Practices

You're reading from   React 18 Design Patterns and Best Practices Design, build, and deploy production-ready web applications with React by leveraging industry-best practices

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Product type Paperback
Published in Jul 2023
Publisher Packt
ISBN-13 9781803233109
Length 524 pages
Edition 4th Edition
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Table of Contents (20) Chapters Close

Preface 1. Taking Your First Steps with React 2. Introducing TypeScript FREE CHAPTER 3. Cleaning Up Your Code 4. Exploring Popular Composition Patterns 5. Writing Code for the Browser 6. Making Your Components Look Beautiful 7. Anti-Patterns to Be Avoided 8. React Hooks 9. React Router 10. React 18 New Features 11. Managing Data 12. Server-Side Rendering 13. Understanding GraphQL with a Real Project 14. MonoRepo Architecture 15. Improving the Performance of Your Applications 16. Testing and Debugging 17. Deploying to Production 18. Other Books You May Enjoy
19. Index

Creating our resolvers

A resolver is a function that’s responsible for generating data for a field in your GraphQL schema. It can normally generate the data in any way you want, in that it can fetch data from a database or by using a third-party API.

To create our user resolvers, you need to create a file called /backend/src/graphql/resolvers/user.ts. Let’s create a skeleton of what our resolver should look like. Here, we need to specify the functions that are defined under Query and Mutation in our GraphQL schema. So, your resolver should look like this:

export default {
  Query: {
    getUsers: () => {},
    getUser: () => {}
  },
  Mutation: {
    createUser: () => {},
    login: () => {}
  }
}

As you can see, we return an object with two main nodes called Query and Mutation, and we map the queries and the mutations we defined in our GraphQL schema (the User.ts file). Of course, we need to make some changes to receive some parameters and return...

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