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

Node and Express

JavaScript has traditionally been used within web browsers in order to enhance or improve the usability or style of web pages. With the growth of the web, each browser competed to provide the best and fastest JavaScript engine they could. One of these JavaScript engines was the V8 engine, which was initially built for Google Chrome, and was released as open source in 2008. Using this engine, Ryan Dahl wrote a JavaScript engine that could be used as a web server, and run on the command line, named Node.js, or simply Node. A year after Node was released, the first versions of the Express framework for Node were released, which provided a set of features to simplify building server-side applications using JavaScript.

Node, using the single-threaded execution of JavaScript code, is able to handle thousands of concurrent web server requests from servers that are relatively small and cheap. Using the callback mechanisms of JavaScript, this also means that programmers...