API Development in TypeScript: From Design to Deployment

About the Book

This book is a comprehensive practical guide to developing web APIs in TypeScript. You will journey from architecture design to deploying a complete service in production. The author shares proven approaches, real code examples, and best practices to help you build reliable, scalable, and easily maintainable APIs.

Who This Book Is For

• JavaScript/TypeScript developers looking to master backend development
• Backend developers transitioning from other languages to TypeScript
• Fullstack developers seeking to deepen their knowledge of API creation
• Team leads and architects looking for a systematic approach to API design

What You Will Learn

• TypeScript fundamentals for backend: typing, generics, decorators, modules
• Designing RESTful APIs and GraphQL APIs: principles, best practices, documentation
• Working with popular frameworks: Express, NestJS, Fastify
• Interacting with databases: PostgreSQL, MongoDB, Prisma, TypeORM
• Authentication and authorization: JWT, OAuth2, sessions, role-based models
• Request validation, error handling, middleware
• API testing: unit tests, integration tests, e2e tests
• Logging, monitoring, and application profiling
• Deployment: Docker, CI/CD, cloud platforms (AWS, Vercel, Railway)
• Microservice architecture in TypeScript

Book Features

• All code examples are up-to-date for TypeScript 5.x and modern frameworks
• Step-by-step creation of a complete API service from start to finish
• Real-world scenarios: file handling, pagination, caching, rate limiting
• Ready-to-use templates and architectural patterns for reuse
• Security and performance tips

The book is suitable for beginners with basic JavaScript knowledge as well as experienced developers looking to systematize their skills and master modern approaches to API creation. After reading, you will be able to independently design and develop production-ready APIs in TypeScript.