The Benefits of TypeScript

TypeScript enables you to write JavaScript code. It includes static typing and other features that are very common in object-oriented languages. In addition, with TypeScript, you can use all of the features of ECMAScript 6, because the compiler converts them into readable code for the current browser.

One of the features of TypeScript is that users can create typed variables, like it is done in Java or C# (for example, const VARIABLE_NAME: Type = Value), Not only that, but TypeScript helps us to write clean, well-organized code. That is one of the reasons why the Angular team adopted TypeScript for the current version of the framework.

Before we begin, let's look at what the official TypeScript documentation states:

In this chapter, we will install TypeScript in our environment globally, in order to understand what happens with TypeScript files when they are converted to JavaScript. Don't worry; Angular applications already provide us with a TypeScript compiler, built into the Angular CLI.

In this chapter, we will cover the following points:

• Installing TypeScript
• The benefits of using TypeScript
• How to transpile a TypeScript file to a JavaScript file
• Writing JavaScript code with static typing
• Understanding interfaces, classes, and generics in TypeScript