Book Image

The TypeScript Workshop

By : Ben Grynhaus, Jordan Hudgens, Rayon Hunte, Matt Morgan, Vekoslav Stefanovski
5 (1)
Book Image

The TypeScript Workshop

5 (1)
By: Ben Grynhaus, Jordan Hudgens, Rayon Hunte, Matt Morgan, Vekoslav Stefanovski

Overview of this book

By learning TypeScript, you can start writing cleaner, more readable code that’s easier to understand and less likely to contain bugs. What’s not to like? It’s certainly an appealing prospect, but learning a new language can be challenging, and it’s not always easy to know where to begin. This book is the perfect place to start. It provides the ideal platform for JavaScript programmers to practice writing eloquent, productive TypeScript code. Unlike many theory-heavy books, The TypeScript Workshop balances clear explanations with opportunities for hands-on practice. You’ll quickly be up and running building functional websites, without having to wade through pages and pages of history and dull, dry fluff. Guided exercises clearly demonstrate how key concepts are used in the real world, and each chapter is rounded off with an activity that challenges you to apply your new knowledge in the context of a realistic scenario. Whether you’re a hobbyist eager to get cracking on your next project, or a professional developer looking to unlock your next promotion, pick up a copy and make a start! Whatever your motivation, by the end of this book, you’ll have the confidence and understanding to make it happen with TypeScript.
Table of Contents (16 chapters)
Preface

async/await in TypeScript

The maintainers of TypeScript begin work on supporting ECMAScript features when they are in stages 1 and 2 of the review process, but only formally release them when they reach stage 3.

TypeScript began offering experimental support for async functions in version 1.6, released in September 2015, and offered full support in version 1.7, released in November 2015. TypeScript programmers could work with this syntax a full year ahead of official browser and Node.js support.

Use of the async/await keywords in TypeScript does not vary much from JavaScript, but we do have an advantage in the ability to be more explicit about which functions should return promises and which should return a resolved value or throw an error.

One thing to be cognizant of when writing modern syntax in TypeScript is that most TypeScript code is transpiled to JavaScript for execution in a runtime, such as a web browser or Node.js. We need to understand the difference between transpilation...