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)

Integrating the shared logic

Without a doubt, we want to reuse as much code as possible in our new and awesome Angular application! The good news is that we can, and, as you'll see, it is really straightforward. It wouldn't be the case for just any project, but the fact is that our code is already written in TypeScript, uses modules, and is pretty well-structured.

We will now create an Angular module called shared. We will use it to store elements that can be reused across the application. In this shared module, we will store our generic domain model classes, services, and more. Obviously, this module will contain everything about Media.

Open up a Terminal and go to the application's src/app folder. Then, create the new module using the following command:

ng generate module shared

Let's start by migrating the Genre enum from MediaMan v1, as we will require...