Book Image

Learn TypeScript 3 by Building Web Applications

By : Sebastien Dubois, Alexis Georges
Book Image

Learn TypeScript 3 by Building Web Applications

By: Sebastien Dubois, Alexis Georges

Overview of this book

TypeScript is a superset of the JavaScript programming language, giving developers a tool to help them write faster, cleaner JavaScript. With the help of its powerful static type system and other powerful tools and techniques it allows developers to write modern JavaScript applications. This book is a practical guide to learn the TypeScript programming language. It covers from the very basics to the more advanced concepts, while explaining many design patterns, techniques, frameworks, libraries and tools along the way. You will also learn a ton about modern web frameworks like Angular, Vue.js and React, and you will build cool web applications using those. This book also covers modern front-end development tooling such as Node.js, npm, yarn, Webpack, Parcel, Jest, and many others. Throughout the book, you will also discover and make use of the most recent additions of the language introduced by TypeScript 3 such as new types enforcing explicit checks, flexible and scalable ways of project structuring, and many more breaking changes. By the end of this book, you will be ready to use TypeScript in your own projects and will also have a concrete view of the current frontend software development landscape.
Table of Contents (15 chapters)

What will you build?

We are going to build the WorldExplorer application together.

Our application will make calls to a RESTful API to retrieve information about the world population. We'll then generate interactive charts to visualize the data.

To generate/render the charts, we will use the Chart.js (https://www.chartjs.org) library.

To make the API calls to the web service, we will use the Fetch API, yet another standard API available in modern runtime environments. Also, we will discover what hides behind the async and await keywords.

Since we have learned about modules in this chapter, we will leverage them to improve the structure of our application.

Finally, to further increase the readability and navigability of the code, we will organize it based on the logical layers (for example, services, domain, views, controllers, and many others​). To do so, we'll...