Book Image

Mastering TypeScript 3 - Third Edition

By : Nathan Rozentals
Book Image

Mastering TypeScript 3 - Third Edition

By: Nathan Rozentals

Overview of this book

TypeScript is both a language and a set of tools to generate JavaScript. It was designed by Anders Hejlsberg at Microsoft to help developers write enterprise-scale JavaScript. Starting with an introduction to the TypeScript language, before moving on to basic concepts, each section builds on previous knowledge in an incremental and easy-to-understand way. Advanced and powerful language features are all covered, including asynchronous programming techniques, decorators, and generics. This book explores many modern JavaScript and TypeScript frameworks side by side in order for the reader to learn their respective strengths and weaknesses. It will also thoroughly explore unit and integration testing for each framework. Best-of-breed applications utilize well-known design patterns in order to be scalable, maintainable, and testable. This book explores some of these object-oriented techniques and patterns, and shows real-world implementations. By the end of the book, you will have built a comprehensive, end-to-end web application to show how TypeScript language features, design patterns, and industry best practices can be brought together in a real-world scenario.
Table of Contents (16 chapters)
Free Chapter
1
TypeScript Tools and Framework Options

Authentication

Almost every website we visit nowadays requires a registration and login process. Even though browsing through a site may not require a login, as soon as we start to interact with the site, and add items to a shopping cart, for example, we need to create some sort of profile and perform a login. Corporate-based websites generally ask for a login before we can even start to interact with the site, as permissions for what you can do on the website vary depending on what your role is.

Luckily, we are able to log in to a wide range of websites using an external authentication process, such as Facebook or Google. This means that we are able to reuse a Google or Facebook login, and do not need to remember a separate username and password combination for every site.

In this section of the chapter, we will update our application to show how authentication works within Angular...