Book Image

TypeScript 2.x By Example

By : Sachin Ohri
Book Image

TypeScript 2.x By Example

By: Sachin Ohri

Overview of this book

The TypeScript language, compiler, and open source development toolset brings JavaScript development up to the enterprise level. It allows you to use ES5, ES6, and ES7 JavaScript language features today, including classes, interfaces, generics, modules, and more. Its simple typing syntax enables building large, robust applications using object-oriented techniques and industry-standard design principles. This book aims at teaching you how to get up and running with TypeScript development in the most practical way possible. Taking you through two exciting projects built from scratch, you will learn the basics of TypeScript, before progressing to functions, generics, promises, and callbacks. Then, you’ll get to implement object-oriented programming as well as optimize your applications with effective memory management. You’ll also learn to test and secure your applications, before deploying them. Starting with a basic SPA built using Angular, you will progress on to building, maybe, a Chat application or a cool application. You’ll also learn how to use NativeScript to build a cool mobile application. Each of these applications with be explained in detail, allowing you to grasp the concepts fast. By the end of this book, you will have not only built two amazing projects but you will also have the skills necessary to take your development to the next level.
Table of Contents (11 chapters)

Sample Trello application 

Now is the time for us to start building a sample Trello application. In the next few sections, we will focus on getting our application up and running and, along the way, visit some TypeScript and Angular concepts. We will start with understanding the application architecture and the application feature set. Then, we will delve into creating components with Angular and TypeScript.

On a high level, we will focus on the following features of Trello in our application:

  • We will look at how to use TypeScript modules to organize our code.
  • In our application, we will have multiple components and the communication between the components will vary between using services to manage the data and direct data communication. We will look at the communication features provided by Angular.
  • While creating our models and using observables, we will look at the use...