TypeScript primer

Angular uses TypeScript extensively for app development. Hence as part of the Angular primer, we will refresh the necessary TypeScript concepts as well.

If you are new to TypeScript, TypeScript is a typed superset of JavaScript that compiles to plain JavaScript. TypeScript provides static typing, classes, and interfaces and supports almost all features of ES6 and ES7 before they land in the browser.

A TypeScript file is saved with a .ts extension.

The main advantage of adding typings to an untyped language (JavaScript) is to make IDEs understand what we are trying to do and better assist us while coding; in other words, Intellisense.

Having said that, here is what we can do with TypeScript.