Book Image

Hands-On TypeScript for C# and .NET Core Developers

By : Francesco Abbruzzese
5 (1)
Book Image

Hands-On TypeScript for C# and .NET Core Developers

5 (1)
By: Francesco Abbruzzese

Overview of this book

Writing clean, object-oriented code in JavaScript gets trickier and complex as the size of the project grows. This is where Typescript comes into the picture; it lets you write pure object-oriented code with ease, giving it the upper hand over JavaScript. This book introduces you to basic TypeScript concepts by gradually modifying standard JavaScript code, which makes learning TypeScript easy for C# ASP.NET developers. As you progress through the chapters, you'll cover object programming concepts, such as classes, interfaces, and generics, and understand how they are related to, and similar in, both ES6 and C#. You will also learn how to use bundlers like WebPack to package your code and other resources. The book explains all concepts using practical examples of ASP.NET Core projects, and reusable TypeScript libraries. Finally, you'll explore the features that TypeScript inherits from either ES6 or C#, or both of them, such as Symbols, Iterables, Promises, and Decorators. By the end of the book, you'll be able to apply all TypeScript concepts to understand the Angular framework better, and you'll have become comfortable with the way in which modules, components, and services are defined and used in Angular. You'll also have gained a good understanding of all the features included in the Angular/ASP.NET Core Visual Studio project template.
Table of Contents (16 chapters)

Bundling with WebPack

Bundlers link all modules that compose a JavaScript application or library into one or more bigger chunks of JavaScript code. Their outputted code chunks can then be added as they are to HTML pages and/or automatically loaded at a later time by the bundler runtime. In both cases, neither ES6-compliant browsers nor JavaScript module loaders are needed anymore since all loading operations are performed by the bundler runtime inserted in the code chunks. Bundlers are able to process both ES6 modules and modules based on JavaScript libraries such as AMD, CommonJS, and SystemJS. Starting from the roots module, they recursively track all dependencies until they reach the leaf modules with no dependencies. Once a module's tree has been built for each root module, each tree is transformed into a unique, independent JavaScript file called a bundle, that may be...