TypeScript and API Development with GraphQL

Transcript

1. TypeScript and API Development with GraphQL Bucharest Adina-Teodora Marcu
2. Agenda API Development TypeScript GraphQL How We merge them
3. Introduction to API Development Challenges
4. Security Scalability Consistency and Reliability Documentation and Usability Latency and Performance Optimization Challenges to think about
5. API architectural styles shape the flow of data
6. How you choose to design an API influences how efficiently, securely, and flexibly information is exchanged across applications.
7. 1.REST 2.GraphQL 3.gRPC 4.SOAP 5.WebSockets 6.RESTful Event-Driven API Architectural styles API architectural styles define how APIs are structured, interact, and handle data. Each architectural style offers unique advantages and challenges, depending on use cases and system requirements. Here are some of the most common API architectural styles:
8. Why Choose TypeScript and GraphQL for APIs?
9. 1.Static typing 2.Classes and interfaces 3.Decorators 4.Namespaces 5.Generics TypeScript TypeScript is an open-source language that was developed by Microsoft. The language was created by Anders Hejlsberg, who also led the development of C# and helped develop Turbo Pascal and Delphi.
10. 15% Actually, a study shows that of all JavaScript bugs can be detected by TypeScript.
11. Among the top companies that use TypeScript: Google, Meta, Microsoft
12. 68% Actually, a study shows that over Of Developers use TypeScript and love it!
13. According to ZeroToMastery blog
14. 1.Schema 2.Types 3.Queries 4.Mutations 5.Resolvers 6.Subscriptions GraphQL GraphQL is a query language for APIs and a runtime for executing those queries. Developed by Facebook in 2012 and open-sourced in 2015, GraphQL allows clients to request exactly the data they need and nothing more, which reduces the volume of data transferred and enhances performance, especially on mobile devices.
15. Who uses GraphQL? AirBnb, Meta, GitHub, Netflix,PayPal
16. 1.Type Safety Across the Stack 2.Streamlined Development 3.Better Developer Experience Putting them together TypeScript and GraphQL provide a modern, powerful approach to tackling API challenges by enhancing security, scalability, performance, and maintainability. Together, they streamline the development process and create robust, high-performance APIs that are easier to scale, document, and secure.
17. How TypeScript Enhances GraphQL
18. 1.Static typing 2.Seamless Schema Definition 3.Integration (F+B) 4.Enhanced type-safe Resolvers Boosting GraphQL with TypeScript TypeScript enhances GraphQL by providing static typing, seamless schema alignment, and code generation, leading to safer and more consistent code. Tools like GraphQL Code Generator automate type creation, ensuring end-to-end type safety and reducing errors. Libraries such as TypeGraphQL allow for concise, decorator-based schema definitions. This integration improves productivity, debugging, and maintainability across both frontend and backend.
20. Tools and frameworks like GraphQL Code Generator, TypeGraphQL, Apollo Client, and Relay streamline TypeScript and GraphQL integration.
21. Using TypeGraphQL for Schema-First API Development
22. Allows developers to define GraphQL schemas using TypeScript classes and decorators.
24. Reduces schema duplication by combining TypeScript classes with GraphQL types. Simplifies complex type definitions and enables better code organization.
25. Apollo Client and Server for TypeScript
26. GraphQL and Apollo are powerful tools that revolutionize how applications interact with data.
27. Enforces type consistency in resolvers. Uses TypeScript to define types for input arguments and return values in GraphQL operations. Ensures clients receive data in the expected format Enhances development with auto-completion and type hints. Enables type checking at build time to catch issues early. Apollo Server
28. Enforces type safety for data fetched from the GraphQL server Uses TypeScript to define types for queries, mutations, and variables. Provides auto-completion and type hints for GraphQL operations in the client code. Ensures consistent data structures are received, matching the server’s schema. Catches potential issues at build time through static type checking. Apollo Client
29. Setting Up a TypeScript + GraphQL Project
30. 1.Initialize project 2.Install required dependencies 3.Configure TypeScript 4.Set Up Project Structure 5.Define GraphQL Schema From Commands to project npm init -y npm install typescript ts-node @types/node graphql apollo-server express @types/express npm install -D @types/graphql nodemon (Optional) Set Up GraphQL Code Generator npm install -D @graphql-codegen/cli @graphql-codegen/typescript @graphql-codegen/typescript-resolvers npx graphql-codegen init
31. Your folder structure should look like this
32. Conclusion
33. Combining TypeScript and GraphQL improves API consistency, type safety, and scalability.
34. http://ttendency.cs.ucl.ac.uk/projects/type_study/ https://graphql.org/ https://typegraphql.com/ https://blog.ippon.tech/introduction-to-graphql-wit h-apollo https://www.apollographql.com/docs/apollo-server/g etting-started Links
35. Q&A
36. Project Link : https://github.com/AdinaT eo/DevFest2024Adina
37. Where you can find me