Mastering TypeScript
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Mastering TypeScript

Mastering TypeScript


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About the Book

Master the TypeScript language – form mental models of the type system, read and understand errors, and migrate from JavaScript to TypeScript competently. Purchase of the print or Kindle book includes a free eBook in PDF format. Key Features Explore TypeScript’s key elements and advanced language features Dive deep into type inference, type design, and building custom types Form mental models to help you write TypeScript more fluently Book DescriptionIf you’re a developer who wants to learn how to work with TypeScript instead of fighting it, this is the book for you – no JavaScript knowledge required. Mastering TypeScript will get you up and running with TypeScript quickly, introduce core concepts, and dive deep into the workings of the type system. You’ll learn how to control your compiler options, work with types from third-party sources, and use advanced features such as decorators and generics. This fifth edition has been reconceived with new chapters on JavaScript to TypeScript migration, type narrowing, reading and understanding TypeScript errors, and more. It also includes a set of brand-new sample projects that put TypeScript in practical and relatable perspective.What you will learn Learn about core TypeScript language features Use the type system to write better applications with fewer errors Read and understand common and confusing TypeScript errors Work with types you don't own, from browser APIs, Node APIs, and JavaScript APIs Configure the TypeScript compiler using best practices See TypeScript in the context of functional and object-oriented programming Explore advanced types and the art of type manipulation Migrate code from JavaScript to TypeScript without relying on the any type Who this book is forThis book is a guide for any developer who wants to learn TypeScript. No prior knowledge of JavaScript is required, but some prior programming experience is assumed. If you are already an experienced TypeScript or JavaScript developer, this book will take your skills to the next level.

Table of Contents:
Table of Contents

  1. Introduction to TypeScript
  2. Up and Running Quickly
  3. Exploring the Type System
  4. Type Annotations and Assertions
  5. Type Inference
  6. Arrays and Objects
  7. Type Design
  8. Type Narrowing
  9. TypeScript Configuration
  10. Types from Third-Party Sources
  11. Reading and Understanding TypeScript Errors
  12. Functional Programming
  13. Object-Oriented Programming
  14. Advanced Types and Type Manipulation
  15. Decorators
  16. Migrating from JavaScript to TypeScript


About the Author :
Maina Wycliffe is a software engineer with over 8 years' professional experience writing production applications, starting in PHP, JavaScript, and Golang. He picked up TypeScript over 5 years ago after Angular adopted it as the language for the framework, and realized how important it was going to be for the JavaScript ecosystem. He has spent a good chunk of the last 5 years teaching TypeScript to developers and advocating for its use and best practices. Maina has been involved in migrating various codebases from JavaScript to TypeScript. He has a deep understanding of how to do this safely, with minimal disruption to feature delivery. Nathan Rozentals has been writing commercial software for over 30 years, in C, C++, Java and C#. He picked up TypeScript within a week after its initial release in October 2012 and realized how much it could help when writing JavaScript. He was one of the first people to start blogging about TypeScript, discussing early frameworks such as Backbone, Marionette, ExtJS and AngularJs. He knew he'd hit the mark when Microsoft staff started to reference his blog posts in their CodePlex discussion forums. Nathan's TypeScript solutions now control User Interfaces in IoT devices, run as stand-alone applications for Point-of-Sale solutions, provide complex application configuration web sites, and are used for mission-critical server APIs.


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Product Details
  • ISBN-13: 9781836647720
  • Publisher: Packt Publishing Limited
  • Publisher Imprint: Packt Publishing Limited
  • ISBN-10: 1836647727
  • Publisher Date: 15 May 2026


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