Book Image

Mastering TypeScript - Fourth Edition

By : Nathan Rozentals
4.7 (3)
Book Image

Mastering TypeScript - Fourth Edition

4.7 (3)
By: Nathan Rozentals

Overview of this book

TypeScript is both a language and a set of tools to generate JavaScript, designed by Anders Hejlsberg at Microsoft to help developers write enterprise-scale JavaScript. Mastering Typescript is a golden standard for budding and experienced developers. With a structured approach that will get you up and running with Typescript quickly, this book will introduce core concepts, then build on them to help you understand (and apply) the more advanced language features. You’ll learn by doing while acquiring the best programming practices along the way. This fourth edition also covers a variety of modern JavaScript and TypeScript frameworks, comparing their strengths and weaknesses. You'll explore Angular, React, Vue, RxJs, Express, NodeJS, and others. You'll get up to speed with unit and integration testing, data transformation, serverless technologies, and asynchronous programming. Next, you’ll learn how to integrate with existing JavaScript libraries, control your compiler options, and use decorators and generics. By the end of the book, you will have built a comprehensive set of web applications, having integrated them into a single cohesive website using micro front-end techniques. This book is about learning the language, understanding when to apply its features, and selecting the framework that fits your real-world project perfectly.
Table of Contents (19 chapters)
17
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18
Index

A simple TypeScript IDE

TypeScript generates JavaScript through what is called a compilation step. This means that once you have written some TypeScript code, you will need to compile, or, more correctly, transpile this code, which will generate JavaScript. In order to do this compilation step, you will need a Node environment, and the TypeScript compiler itself. In this section of the chapter, we will explore the setup of a simple TypeScript IDE.

Node is a JavaScript runtime environment. Similar to how a web browser can interpret and run JavaScript code, Node can do the same thing. It is a command-line driven environment, which means that all you need is a standard command prompt in order to run JavaScript.

Installing Node is as simple as downloading the Node installer package from the Node website (https://nodejs.org) for your operating system of choice, and running it. As it is an open source package, so you can also download the source code, and compile it from scratch...