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
TypeScript Tools and Framework Options


Jasmine is a behavior-driven JavaScript testing framework that has been around longer than some of the oldest JavaScript frameworks themselves. Backbone was originally released in October 2010, but Jasmine was actually released one month earlier, in September 2010. Jasmine was originally a port of the popular Java testing framework named jUnit, and was called jsUnit. The age of this framework shows that it has stood the test of time, and has been constantly updated with new features to allow even the most modern frameworks to use it.

Jasmine has a very simple syntax, and is designed so that it can be read and understood easily. It can also be extended easily, and is the recommended framework for Aurelia as well as Angular unit and integration testing. Installation of Jasmine using npm is as follows:

npm install jasmine --save 

The relevant declaration files for Jasmine...